1. A steering variable-speed switching mechanism comprises a steering main body (1) and a rotary power mechanism (2) for driving the steering main body (1), and is characterized in that a plurality of moving devices (3) are arranged on the steering main body (1), each moving device (3) is also provided with a steering switching device (4), and the moving devices (3) are used for changing the radial positions of the steering switching devices (4) on the steering main body (1); the moving device (3) and the steering switching device (4) are respectively driven by individually controllable braking force devices.

2. The steering gear change transfer mechanism according to claim 1, wherein the moving means (3) is a linear drive.

3. The steering gear shifting adapter mechanism according to claim 2, further comprising a guide mechanism (5), wherein the linear driving device and the guide mechanism (5) are mounted on the steering main body (1), and the linear driving device drives the steering adapter mechanism (4) to move along the guide direction of the guide mechanism (5).

4. The steering, speed-changing and switching mechanism as claimed in claim 3, wherein the linear driving device adopts a motor to drive a ball screw pair, the guiding mechanism (5) is a slide rail, the steering and switching device (4) is mounted on the ball screw pair, and a moving block of the ball screw pair is connected with a sliding block of the slide rail.

5. The steering gear shifting adapter mechanism according to claim 2 or 3, characterized in that the linear driving device is a pneumatic cylinder or an electric cylinder, and the steering adapter mechanism (4) is connected with the pneumatic cylinder or the electric cylinder.

6. The steering gear shifting adapter mechanism as claimed in claim 1, characterized in that the steering adapter mechanism (4) comprises a suction mechanism (6) and a rotary drive device, the rotary drive device is connected with the suction mechanism (6) and drives the suction mechanism (6) to steer.

7. The steering gear shifting adapter mechanism according to claim 6, wherein the adsorption mechanism (6) comprises a vacuum generating mechanism (61) and a negative pressure assembly (62), the negative pressure assembly (62) is communicated with the vacuum generating mechanism (61); the rotary driving device is connected with the negative pressure assembly (62) and drives the negative pressure assembly (62) to rotate.

8. The steering, speed-changing and switching mechanism as claimed in claim 6 or 7, wherein the rotary driving device is a rotary cylinder, a rotary table, a rotary electric cylinder or a motor.

9. The steering, gear shifting adapter mechanism according to claim 7, wherein the rotary drive device is a hollow shaft motor, one end of the hollow shaft motor is connected to the negative pressure assembly (62), and the other end of the hollow shaft motor is communicated with the vacuum generating mechanism (61).

10. The steering, gear shifting and switching mechanism according to claim 7, further comprising a plurality of through holes arranged on the steering main body (1) for leading to the negative pressure assembly (62); the steering main body (1) is arranged on the frame (7) through a support shaft; the space between the steering main body (1) and the rack (7) is provided with a section of fixed air duct (8) positioned on the through hole, the steering main body (1) is rotatably arranged relative to the fixed air duct (8), the fixed air duct (8) is sealed in a contact manner with the steering main body (1), and the fixed air duct (8) is connected with a vacuum generation mechanism (61).

Background

In the field of production equipment for sheet products such as sanitary products, medical products and the like, an adsorption device adsorbs core sheet materials, the core sheet materials are conveyed by rotating a steering wheel, and the core sheet materials are conveyed while turning at a turning angle, generally need to be turned by 90 degrees and then are attached to other materials.

The rotation directions from the previous material receiving station to the next material feeding station are different, the transmission speeds are different, the switching device is used as an intermediate transition mechanism, and the rotating speed of a steering wheel needs to be changed while the adsorption device rotates to adapt to the transmission speeds of the front station and the rear station.

The structure in the past installs big cam on the steering wheel back shaft, rotates through big cam and adjusts the steering wheel rotational speed, and the centre is installed little cam additional and is changed every adsorption equipment's steering to realize going up and down. The size of the cam is matched with the size specification of the adsorption device; because the core sheet specification changes, corresponding cam mechanism all needs to be changed, and the operation is very complicated, and manufacturing cost is higher.

Disclosure of Invention

According to the problems in the prior art, the invention provides a steering and speed-changing switching mechanism, which aims to solve the problems of complexity, low applicability and complex replacement operation of the conventional steering and speed-changing switching mechanism.

In order to achieve the purpose, the technical scheme of the invention is as follows: a steering variable-speed switching mechanism comprises a steering main body and a rotary power mechanism for driving the steering main body, wherein a plurality of moving devices are arranged on the steering main body, each moving device is also provided with a steering switching device, and the moving devices are used for changing the radial position of the steering switching devices on the steering main body; the moving device and the steering switching device are respectively driven by an individually controllable braking force device.

Preferably, the moving device adopts a linear driving device.

The steering switching device is characterized by further comprising a guide mechanism, the linear driving device and the guide mechanism are mounted on the steering main body, and the linear driving device drives the steering switching device to move along the guide direction of the guide mechanism.

Preferably, the linear driving device adopts a motor to drive a ball screw pair, the guide mechanism is a slide rail, the steering switching device is installed on the ball screw pair, and a moving block of the ball screw pair is connected with a slide block of the slide rail.

Preferably, the linear driving device adopts an air cylinder or an electric cylinder, and the steering switching device is connected with the air cylinder or the electric cylinder.

Preferably, the steering switching device comprises an adsorption mechanism and a rotary driving device, and the rotary driving device is connected with the adsorption mechanism and drives the adsorption mechanism to steer.

Preferably, the adsorption mechanism comprises a vacuum generation mechanism and a negative pressure assembly, and the negative pressure assembly is communicated with the vacuum generation mechanism; the rotary driving device is connected with the negative pressure assembly and drives the negative pressure assembly to turn.

Preferably, the rotary driving device adopts a rotary air cylinder, a rotary worktable, a rotary electric cylinder or a motor.

Preferably, the rotary driving device is a hollow shaft motor, one end of the hollow shaft motor is connected with the negative pressure assembly, and the other end of the hollow shaft motor is communicated with the vacuum generating mechanism.

Preferably, the hollow shaft motor is connected with the vacuum generating mechanism through an air suction pipe.

Furthermore, the steering device also comprises a plurality of through holes which are arranged on the steering main body and are used for leading to the negative pressure component; the steering main body is arranged on the frame through a support shaft; the space between the steering main body and the rack is provided with a section of fixed air duct positioned on the through hole, the steering main body is rotatably arranged relative to the fixed air duct, the fixed air duct is sealed in a contact manner with the steering main body, and the fixed air duct is connected with a vacuum generation mechanism. The invention has the beneficial effects that:

(1) the steering switching device and the moving device for changing the position of the steering switching device are driven by the previous cam, the steering switching device and the moving device for changing the position of the steering switching device are improved to be driven by respective motors or cylinders, the respective moving speed and the rotating angle can be adjusted only by modifying the parameters of the motors or the cylinders and independently controlling, and the steering switching device can adapt to the switching of products with different specifications and sizes and core materials. The structure is simpler, and the switching is more flexible.

(2) The steering switching device and the moving device for changing the position of the steering switching device are driven by respective power mechanisms, and the motor of the moving device drives the ball screw pair to do lifting motion along the guide rail, so that the negative pressure assembly does lifting motion along the radial direction of the steering wheel. The hollow shaft motor is connected with the negative pressure assembly and can drive the negative pressure assembly to rotate.

(3) In the process that the negative pressure assembly rotates around the supporting shaft, the size of the rotating radius of the negative pressure assembly is changed on the premise that the angular speed of the steering wheel is constant, namely the linear speed is changed, the steering switching device changes the conveying speed while steering, and the conveying speed of material receiving and feeding is well coordinated.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a schematic view of the installation of the rotary driving mechanism and the linear driving mechanism of the present invention.

Detailed Description

Example 1

As shown in fig. 1, 2 and 3, a steering speed-changing switching mechanism comprises a frame 7, a steering main body 1, a rotary power mechanism 2 for driving the steering main body 1, a moving device 3 and a steering switching device 4; the steering switching device 4 comprises a negative pressure component 62 connected with the vacuum generating mechanism 61 and adopts a hollow shaft motor;

the steering main body 1 is a steering wheel and is arranged on the frame 7, and the rotating power mechanism 2 is a main motor and is arranged on the frame 7 and is in driving connection with the steering wheel.

A plurality of stations for mounting the moving device 3 are arranged on the steering wheel, and the moving device 3 and the guide mechanism 5 are fixed on the steering wheel; the moving device 3 adopts a motor to drive a ball screw pair;

the hollow shaft motor is arranged on the ball screw pair, a moving block of the ball screw pair is connected with a sliding block of the sliding rail, and the motor drives a screw shaft penetrating through the ball screw pair to rotate;

one end of a hollow shaft motor is connected with the vacuum generating mechanism 61 through an air suction hose, the hollow shaft motor is hermetically connected with the bottom shaft of the negative pressure component 62, and the bottom shaft of the negative pressure component 62 is a hollow shaft; the negative pressure component 62 is composed of a hollow negative pressure adsorption box body and a negative pressure cover at the end part; the negative pressure cover is a specification replacement part, and holes with different sizes and shapes are formed in the surface according to different products and specifications.

The steering switching device 4 and the moving device 3 which are driven by independent control can be flexibly and independently controlled, and the application range is wide. When the steering device is used, the main motor drives the steering wheel to rotate integrally, and the combination of the steering switching devices 4 and the moving device 3 which are uniformly distributed on the steering wheel rotates under the driving of the steering wheel.

The motor drives the ball screw pair to move up and down along the guide rail, and drives the hollow shaft motor to move up and down, so that the negative pressure component 62 can move up and down in the radial direction of the steering wheel, and the revolution radius size of the negative pressure component 62 can be changed. On the premise that the angular speed of the steering wheel is constant, the conveying speed of the negative pressure assembly 62 can be adjusted by changing the size of the rotating radius of the negative pressure assembly 62, namely changing the linear speed.

In the invention, the steering switching device 4 and the moving device 3 are respectively driven by respective motors, and only parameters required by each group of motors are needed to be adjusted after the specifications of products are switched, so that the production requirements of different products are met, and the whole equipment structure is not required to be replaced.

Compared with the traditional mode that the adsorption mechanism and the product are driven to turn through a linked transmission mechanism and the rotation radius of the adsorption mechanism and the product is driven to rotate in the main rotation process; the device has compact structure, reduces intermediate links and avoids complicated replacement; the operation is more convenient.

In conclusion, the rotary driving mechanism adopts a hollow shaft motor, so that the rotation in the revolution process is realized, the product is directly adsorbed through the negative pressure channel, and the suction force of the negative pressure component 62 is more balanced; the negative pressure component 62 and the hollow shaft motor move up and down along with the sliding block to change the position of a product or a material; the core body steering gear solves the problem that speed change is realized at the same time of steering.

The hollow shaft motor is connected with the negative pressure assembly 62, can drive the negative pressure assembly 62 to rotate, turns the negative pressure assembly 62 to 90 degrees, also can turn to corresponding angle according to actual conditions, and can rotate forward and backward to satisfy the sequential conveying of products in a forward and backward direction.

In addition, an arc-shaped fixed air duct 8 is arranged in the space between the steering wheel and the frame 7, and the vacuum generating mechanism 61 is connected with the fixed air duct 8; fixed wind channel 8 and 7 fixed connection of frame, and fixed wind channel 8 is sealed with the steering wheel contact, and the steering wheel rotates for fixed wind channel 8 to be set up, fixed wind channel 8 is located the left downside of steering wheel, and the steering wheel is equipped with a plurality of through-holes that lead to fixed wind channel 8, and the through-hole is used for connecting the hollow shaft motor through the hose intercommunication that induced drafts.

When the steering wheel rotates, when the air suction hose passes through or leaves the fixed air duct 8, the adsorption and separation of the core body materials are completed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.