1. The mold is characterized in that the switching device is arranged on the mold cavity, a steering runner is arranged in the switching device, and a melt can flow into the mold cavity from the mold cavity inlet in the horizontal direction and enter the mold cavity from the mold cavity inlet in the vertical direction through the steering runner.

2. The ultra-high molecular weight polyethylene transfer vertical injection test mold according to claim 1, wherein the transfer device comprises a transfer body, a horizontal sprue bush and a vertical sprue block, wherein an inclined melt flow channel is arranged in the transfer body, a horizontal melt flow channel is arranged in the horizontal sprue bush, a vertical melt flow channel is arranged in the vertical sprue block, and the inclined melt flow channel connects the horizontal melt flow channel and the vertical melt flow channel to form a steering flow channel.

3. The ultrahigh molecular weight polyethylene transfer vertical injection test mold of claim 2, wherein the cross section of the oblique melt channel is circular, the major diameter of the elliptical hole at the horizontal inlet end of the oblique melt channel is equal to the diameter of the circular hole at the outlet end of the horizontal melt channel, and the minor diameter of the elliptical hole at the vertical outlet end of the oblique melt channel is equal to the diameter of the circular hole at the inlet end of the vertical melt channel.

4. The ultrahigh molecular weight polyethylene transfer vertical injection test mold of claim 2, wherein the mold cavity comprises a mold cavity body and a vertical side plate vertically extending from one side of the mold cavity body, and the vertical side plate and the mold cavity body form an integrated "L" shaped structure.

5. The ultra-high molecular weight polyethylene transfer vertical injection testing mold of claim 4, wherein the transfer body comprises a transfer body and a horizontal flange and a vertical flange extending from the transfer body.

6. The ultra high molecular weight polyethylene transfer vertical injection test mold of claim 5, wherein the vertical flange rests on and is bolted to the vertical side plate and the horizontal flange rests on and is bolted to the mold cavity body.

7. The ultra-high molecular weight polyethylene transfer vertical injection test mold according to claim 6, wherein the vertical side plates are provided with through holes, and the through holes are provided with horizontal sprue bushes.

8. The ultra-high molecular weight polyethylene transfer vertical injection test mold according to claim 7, wherein a cavity is arranged on the transfer body corresponding to the mold cavity inlet, and a vertical gate block is arranged in the cavity.

9. The ultrahigh molecular weight polyethylene transfer vertical injection molding apparatus of any one of claims 1 to 8, wherein the other end of the cavity opposite to the cavity entrance in the vertical direction is provided with an ejector.

10. The ultra high molecular weight polyethylene transfer vertical injection test mold of claim 9, wherein the mold cavity, the transfer means and the ejection means are vertically installed in a reversed orientation.

Background

When injection molding experimental research is carried out on a horizontal injection molding machine, the direction of filling the mold with the polymer melt is consistent with the horizontal injection direction, namely, the mold filling flow of the melt is horizontal mold filling flow. When a horizontal injection molding machine is used for injection molding of ultrahigh molecular weight polyethylene, a molten material is broken into powder particles due to severe melt fracture, in order to fully research the flow behavior of the particles in a mold cavity, the influence of a vertical injection direction on the mold filling flow behavior of the particles is needed to be researched under the action of the gravity of the particles (the mold filling flow direction of the particles is the same as the gravity direction when the particles are injected vertically downwards, and the mold filling flow direction of the particles is opposite to the gravity direction when the particles are injected vertically upwards), namely, an injection mold which is arranged on the horizontal injection molding machine and can change the flow direction of the melt to realize the vertical upwards injection into the mold cavity and the vertical downwards injection into the mold cavity is needed to be adopted. The mold structure used by the existing horizontal injection molding machine can only realize horizontal injection into the mold cavity.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an ultrahigh molecular weight polyethylene transfer vertical injection experiment mold which can be mounted on a horizontal injection molding machine to realize a vertical direction injection molding experiment of materials such as ultrahigh molecular weight polyethylene and the like.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the mold is characterized in that the switching device is arranged on the mold cavity, a steering runner is arranged in the switching device, and a melt can flow into the mold cavity from the mold cavity inlet in the horizontal direction and enter the mold cavity from the mold cavity inlet in the vertical direction through the steering runner.

The switching device comprises a switching body, a horizontal sprue bush and a vertical sprue block, wherein an oblique melt runner is arranged in the switching body, a horizontal melt runner is arranged in the horizontal sprue bush, a vertical melt runner is arranged in the vertical sprue block, and the oblique melt runner communicates the horizontal melt runner with the vertical melt runner to form a steering runner.

The cross section of slant fuse-element runner is circular, the oval hole major diameter of the horizontal entry end of slant fuse-element runner equals with the exit end round hole diameter of horizontal fuse-element runner, the oval hole minor diameter of the vertical exit end of slant fuse-element runner equals with the entry end round hole diameter of vertical fuse-element runner.

The die cavity body comprises a die cavity body and a vertical side plate vertically extending out of one side of the die cavity body, and the vertical side plate and the die cavity body form an integrated L-shaped structure.

The adapter body comprises an adapter body, and a horizontal flange and a vertical flange which extend out of the adapter body.

The vertical flange is abutted against the vertical side plate and is in bolted connection with the vertical side plate, and the horizontal flange is abutted against the die cavity body and is in bolted connection with the die cavity body.

The vertical side plate is provided with a through hole, and a horizontal sprue bush is arranged in the through hole.

A cavity is arranged at the position, corresponding to the inlet of the die cavity, of the adapter body, and a vertical gate block is arranged in the cavity.

And the other end of the die cavity, which is opposite to the die cavity inlet in the vertical direction, is provided with an ejection device.

The die cavity, the switching device and the ejection device can be reversely mounted in the vertical direction.

The invention has the technical effects that:

the injection mold can convert horizontal injection mold filling flow into required vertical injection mold filling flow on a horizontal injection molding machine, can realize vertical downward injection mold filling or vertical upward injection mold filling by changing the installation direction, and is favorable for researching the influence of gravity on the mold filling flow of polymer materials, particularly ultra-high molecular weight polyethylene melts; the major diameter of the oval hole at the horizontal inlet end of the oblique melt flow channel is equal to the diameter of the round hole at the outlet end of the horizontal sprue bush, and the minor diameter of the oval hole at the vertical outlet end of the oblique melt flow channel is equal to the diameter of the round hole at the inlet end of the vertical sprue block, so that the whole melt flow channel can be ensured to be smooth, the melt can flow in a steering manner, and the flow channel aggregate can be conveniently taken out; after the injection is finished, the sample can be separated by manually pressing the ejector rod, and the ejector rod can automatically recover the original position under the action of the spring; in addition, simple and easy manual die opening and die closing can be realized through the dismounting of the fastening bolts, so that a complex mechanical structure is omitted, and the manufacturing cost of the experimental die is reduced.

Drawings

The invention will be further described with reference to the accompanying drawings, which are only schematic illustrations and illustrations of the invention, and do not limit the scope of the invention.

FIG. 1 is a schematic structural diagram of an experimental mold according to the present invention;

FIG. 2 is a general schematic view of a melt runner connection;

FIG. 3 is a schematic view of a junction of a horizontal melt channel and an angled melt channel;

FIG. 4 is a schematic view of a junction of an angled melt channel and a vertical melt channel;

fig. 5 is a schematic view of a reverse mold installation structure.

Wherein:

1-a mold cavity; 2-a positioning ring; 3, horizontal sprue bush; 31-horizontal melt channel; 4, a switching body; 41-oblique melt flow channel; 5, a vertical gate block; 51-vertical melt channel; 6-horizontal fastening bolt; 7-vertical fastening bolts; 8-gate block fastening bolt; 9-a mandril; 91-a ejector pin cap; 92-a spring; 10-heating the hole; 11-retaining ring fastening bolt.

Detailed Description

The following detailed description is given with reference to specific examples, but the scope of the present invention is not limited by the specific embodiments.

The utility model provides a vertical injection test mould of ultrahigh molecular weight polyethylene switching, includes mould cavity 1 and switching device, and mould cavity 1 has the die cavity, and the axis of die cavity is vertical direction, and the die cavity has the die cavity entry in vertical direction, and the switching device sets up on the mould cavity, is provided with among the switching device and turns to the runner, can realize through turning to the runner that the fuse-element flows in with the horizontal direction and follow vertical direction and get into the die cavity from the die cavity entry.

Specifically, as shown in fig. 1, the adapter device comprises an adapter body 4, a horizontal sprue bush 3 and a vertical sprue block 5, wherein an oblique melt flow channel 41 penetrating through a horizontal inlet end and a vertical outlet end of the adapter body 4 is arranged in the adapter body 4, a penetrating horizontal melt flow channel 31 is arranged in the center of the horizontal sprue bush 3, and a penetrating vertical melt flow channel 51 is arranged in the center of the vertical sprue block 5. As shown in fig. 2, horizontal melt channel 31, diagonal melt channel 41 and vertical melt channel 51 are in turn connected to form a turn channel. During injection, melt flows in from the inlet end of the horizontal sprue bush 3, flows out from the outlet end of the vertical sprue block 5, and enters the die cavity of the die cavity 1 along the vertical direction.

The cross section of the oblique melt flow channel 41 is circular, and end surface holes of a horizontal inlet end and a vertical outlet end of the oblique melt flow channel 41 are both elliptical naturally; as shown in FIG. 3, the major diameter of the horizontal inlet end elliptical orifice of the diagonal melt channel 41 is equal to the diameter of the outlet end circular orifice of the horizontal melt channel 31, and as shown in FIG. 4, the minor diameter of the vertical outlet end elliptical orifice of the diagonal melt channel 41 is equal to the diameter of the inlet end circular orifice of the vertical melt channel 51. After disassembling the mould, the runner condensate in the diagonal melt runner 41 can be manually withdrawn from the horizontal inlet end of the adaptor body 4.

The die cavity 1 comprises a die cavity body and a vertical side plate vertically extending out of one side of the die cavity body, and the vertical side plate and the die cavity body form an integrated L-shaped structure. The adapter 4 comprises an adapter body and a horizontal flange and a vertical flange extending from the adapter body. The adapter body 4 is arranged on the die cavity 1, a vertical flange of the adapter body 4 is abutted against a vertical side plate of the die cavity 1 and is connected with the vertical side plate through a horizontal fastening bolt 6, and a horizontal flange of the adapter body 4 is abutted against a die cavity body and is connected with the die cavity body through a vertical fastening bolt 7.

The vertical side plate is provided with a through hole, a horizontal sprue bush 3 is embedded into the through hole, the outer side of the horizontal sprue bush 3 is fixed through a positioning ring 2, the positioning ring 2 is connected with the right end face of the vertical side plate of the die cavity body 1 through a positioning ring fastening bolt 11, and the horizontal sprue bush 3 is tightly pressed on the right end face of the vertical side plate of the die cavity body 1. And pressing the mould block by using the mould, and pressing and fixedly installing the mould on a fixed mould plate of the injection molding machine through a vertical side plate of the mould cavity 1.

A cavity is arranged at the position, corresponding to the inlet of the die cavity, of the adapter body, and a vertical gate block 5 is arranged in the cavity. The end surface of the inlet end of the vertical gate block 5 is tightly combined with the end surface of the outlet end of the adapter 4 through a gate block fastening bolt 8; the end face of the outlet end of the vertical gate block 5 is tightly combined with the end face of the inlet end of the die cavity body 4 through the compressing action of the horizontal flange of the adapter body 4 and the vertical fastening bolt 7.

The other end of the die cavity opposite to the inlet of the die cavity in the vertical direction is provided with an ejection device which consists of an ejector rod 9, an ejector rod cap 91 and a spring 92. The spring 92 is provided between the ejector pin cap 91 and the end face of the die cavity 1. In the initial state, the ejection end of the ejector rod 9 is tightly attached to the end face of the mold cavity 1 by the spring tension, after the injection is completed and the mold is disassembled, the ejector rod cap 91 can be manually pressed to eject the sample, and after the hand is released, the ejector rod 9 is restored to the original position under the spring tension.

Further, the mold can be installed in the forward direction as shown in fig. 1 to realize downward injection and mold filling flow, or the mold cavity 1, the adaptor 4, the vertical sprue block 5 and the ejection device can be installed in the reverse direction with the axis of the horizontal sprue bush as the axis (as shown in fig. 5) to realize upward injection and mold filling flow.

Preferably, the mold cavity 1 and the adaptor 4 are uniformly provided with heating holes 10, and the heating holes 10 can be provided with heating rods so as to uniformly heat the mold cavity 1 and the adaptor 4.

Example 1

The mold is assembled according to fig. 1, the axis of the mold cavity is vertical, and the ejector rod is arranged below, namely in the forward direction. And fixing the mold on a fixed mold plate of the horizontal injection molding machine by using a mold pressing block. The nozzle head of the injection molding machine is contacted with and tightly props against the inlet of the horizontal sprue bush, and the ultrahigh molecular weight polyethylene melt passes through the horizontal sprue bush, the adapter and the vertical sprue block under the injection pressure of 95.6MPa and the injection speed of 60mm/s and is converted from horizontal injection to vertical injection downwards into the mold cavity. After injection is finished, when the mold is opened, the horizontal fastening screws and the vertical fastening screws are removed, the adapter body and the mold cavity body are separated in the horizontal direction, the horizontal melt runner congeals are extracted from the horizontal sprue bush, then the adapter body and the vertical sprue block are separated from the mold cavity body in the vertical direction, the horizontal melt runner congeals are clamped by the vice, the adapter body and the congeals in the vertical sprue block are integrally extracted, then the ejector rod cap is manually pressed to eject a sample, and the ejector rod automatically restores the original position after the ejector rod is loosened. When the mold is closed, the mold installation is resumed as shown in fig. 1, and the next vertical downward injection molding experiment can be performed.

Example 2

Similar to the principle of the embodiment 1, the mold cavity axis is arranged along the vertical direction, but the ejector rod is arranged above, namely, the reverse installation is realized (as shown in figure 5), and the ultrahigh molecular weight polyethylene melt can be converted from the horizontal direction injection to the vertical upward injection into the mold cavity. The method for disassembling and taking out the runner condensate is the same as that of the embodiment 1.

The foregoing embodiments illustrate and describe the principles and general features of the present invention and its advantages. It will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are given by way of illustration of the principles of the invention and are not to be taken as limiting the scope of the invention in any way, and that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.