A valve plate limiter bending device

Abstract

This invention discloses a valve plate limiter bending device, comprising a main body, characterized in that: one end surface of the main body is an arc-shaped structure, and a feeding mechanism is provided on the main body to slide towards the arc-shaped structure; side plates are fixed on both sides of the main body; an eccentric roller is provided between the side plates above the arc-shaped structure; the shortest distance between the eccentric roller and the arc-shaped structure is consistent with the thickness of the valve plate limiter; this invention feeds the blank of the valve plate limiter into the arc-shaped structure through the feeding mechanism, and uses the rotation of the eccentric roller to press down on the valve plate limiter, causing the bending area of ​​the valve plate limiter to bend downward and fit against the arc-shaped structure. By gradually pressing down, the valve plate limiter is bent, reducing the rebound of the valve plate limiter, improving the quality of the valve plate limiter, and thus improving the production qualification rate. Multiple valve plate limiters can be pressed down simultaneously, improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of limiter production equipment technology, and in particular to a valve plate limiter bending device. Background Technology

[0002] Valve plate limiters, also known as valve plate lift limiters, are installed on the valve body along with the valve plate. They are used to limit the opening of the intake and exhaust valve plates. During production, the limiting part of the valve plate needs to be bent to form an arc-shaped structure with a certain curvature. Currently, the bending method for limiters is stamping bending. Specifically, the blank of the limiter is placed on the lower die, and the hydraulic structure drives the upper die to move, completing the stamping bending of the limiter. In actual production, after the bending is pressed down, the bent part will have a certain rebound, causing the bending curvature to deviate from the designed bending curvature. This affects the quality of the limiter and leads to a low production qualification rate. Moreover, the current equipment can only stamp and bend one at a time, and its production efficiency is also relatively low. Summary of the Invention

[0003] The main objective of this invention is to provide a valve plate limiter bending device, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a valve plate limiter bending device, comprising a main body, one end surface of the main body being an arc-shaped structure, and a feeding mechanism that slides toward the arc-shaped structure is provided on the main body, side plates are fixed on both sides of the main body, and an eccentric roller is provided between the side plates above the arc-shaped structure, the shortest distance between the eccentric roller and the arc-shaped structure being consistent with the thickness of the valve plate limiter.

[0005] Preferably, a limiting rod is provided on the side of the arc-shaped structure above the main body. The two ends of the limiting rod are fixedly connected to the side plate. The distance between the limiting rod and the upper surface of the main body is consistent with the thickness of the valve plate limiter.

[0006] Preferably, the top surface of the main body is provided with a groove, a slide rail is provided in the groove, the feeding mechanism is slidably connected to the slide rail, a mounting frame is fixed in the groove, a pneumatic rod is installed on the mounting frame, and the output end of the pneumatic rod is connected to the feeding mechanism.

[0007] Preferably, the feeding mechanism includes a strip-shaped placement seat, which has a plurality of placement slots, and a limit post is provided in the placement slot, the limit post being inserted into the mounting hole of the valve plate limiter.

[0008] Preferably, a support bar is provided on one side of the strip-shaped placement seat, and the support bar is connected to the strip-shaped placement seat by an elastic element. The top surface of the support bar, the bottom surface of the limiting groove, and the top surface of the main body are on the same plane.

[0009] Preferably, at least two elastic elements are provided and arranged symmetrically. Each elastic element includes a spring and a telescopic rod, and the two ends of the telescopic rod are respectively fixedly connected to the side of the support bar and the strip-shaped placement seat.

[0010] Preferably, it also includes a marker block and a detection element. The marker block is fixed to the feeding mechanism, and the detection element determines the moving position of the feeding mechanism by detecting the position of the marker block.

[0011] Preferably, there are three eccentric rollers, and their diameters gradually increase along the arc-shaped structure. The eccentric positions of the two end faces of the eccentric rollers are connected to the side plates through shafts, and each shaft is fixedly connected to a transmission wheel. The transmission wheels are connected to each other through a conveyor belt, and an adjusting wheel is provided between two adjacent transmission wheels. A motor is driven to one of the shafts.

[0012] Preferably, the axes of the connecting shafts at both ends of the same eccentric roller are on a straight line, and the axes of the three shafts on the same side are on the same plane.

[0013] Preferably, the position of the eccentric roller closest to the feeding mechanism at the farthest distance from the arc-shaped structure is not lower than the top surface of the limit valve plate.

[0014] Compared with traditional technologies, the beneficial effects of this invention are as follows: This invention uses a feeding mechanism to feed the blank of the valve plate limiter into the arc-shaped structure. By using the rotation of the eccentric roller, the valve plate limiter is pressed down, causing the bending area of ​​the valve plate limiter to bend downward and fit against the arc-shaped structure. By gradually pressing down, the valve plate limiter is bent, reducing the rebound of the valve plate limiter, improving the quality of the valve plate limiter, and thus improving the production qualification rate. Multiple valve plate limiters can be pressed down at the same time, improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the feeding mechanism of the present invention;

[0018] Figure 4 This is a schematic diagram of the valve plate limiter of the present invention during advancement;

[0019] Figure 5 This is a schematic diagram of the valve plate limiter of the present invention bending under pressure;

[0020] Figure 6 This is a schematic diagram of the valve plate limiter structure of the present invention.

[0021] In the diagram: 1. Main body; 2. Arc-shaped structure; 3. Feeding mechanism; 31. Strip-shaped placement seat; 32. Placement groove; 33. Limiting post; 34. Support bar; 35. Spring; 36. Telescopic rod; 4. Side plate; 5. Eccentric roller; 6. Limiting pressure rod; 7. Groove; 8. Slide rail; 9. Mounting frame; 10. Pneumatic rod; 11. Marking block; 12. Detection element; 13. Shaft; 14. Transmission wheel; 15. Conveyor belt; 16. Adjusting wheel; 17. Motor; 18. Valve plate limiter. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figure 1-6 As shown, this embodiment provides a valve plate limiter bending device, including a main body 1, one end surface of the main body 1 is an arc-shaped structure 2, and a feeding mechanism 3 is provided on the main body 1 to slide toward the arc-shaped structure 2. Side plates 4 are fixed on both sides of the main body 1, and an eccentric roller 5 is provided between the side plates 4 above the arc-shaped structure 2. The shortest distance between the eccentric roller 5 and the arc-shaped structure 2 is consistent with the thickness of the valve plate limiter 18. The valve plate limiter 18 is placed on the feeding mechanism 3 and fed into the area below the eccentric roller 5. When the eccentric roller 5 rotates, it presses down on one end of the valve plate limiter 18, thereby bending the valve plate limiter 18.

[0024] A limiting pressure rod 6 is provided on the side of the arc structure 2 above the main body 1. The two ends of the limiting pressure rod 6 are fixedly connected to the side plate 4. The distance between the limiting rod and the upper surface of the main body 1 is consistent with the thickness of the valve plate limiter 18. The limiting pressure rod 6 is used to limit and press the parts of the valve plate limiter 18 that do not need to be bent. When the eccentric roller 5 presses down to bend the valve plate limiter 18, it ensures that the valve plate limiter 18 is limited in the vertical direction at the rear end.

[0025] The top surface of the main body 1 is provided with a groove 7, and a slide rail 8 is provided inside the groove 7. The feeding mechanism 3 is slidably connected to the slide rail 8. A mounting frame 9 is fixed inside the groove 7, and a pneumatic rod 10 is installed on the mounting frame 9. The output end of the pneumatic rod 10 is connected to the feeding mechanism 3. The feeding mechanism 3 is moved by the pneumatic rod 10. Of course, the pneumatic rod 10 can also be replaced with other drive-type telescopic structures, such as hydraulic rods.

[0026] like Figure 3As shown, the feeding mechanism 3 includes a strip-shaped placement seat 31 with several placement slots 32. Each placement slot 32 contains a limiting post 33, which is inserted into the mounting hole of the valve plate limiter 18. The placement slots 32 and the valve plate limiter 18 with the mounting hole have the same external dimensions. After the valve plate limiter 18 is placed into the placement slot 32, it limits the valve plate limiter 18. A support bar 34 is provided on one side of the strip-shaped placement seat 31. The support bar 34 is connected to the strip-shaped placement seat 31 by an elastic element. The top surface of the support bar 34, the bottom surface of the limiting slot, and the top surface of the main body 1 are on the same plane. The support bar 34 supports the front end of the valve plate limiter 18, preventing the front end of the valve plate limiter 18 from tilting downwards during movement. Furthermore, no fixed structure is provided in the placement slots 32, allowing the robot arm to directly pick up and place the valve plate limiter 18. Two elastic elements are symmetrically arranged to ensure that the distance between the support bar 34 and the strip-shaped placement seat 31 remains consistent during movement. Specifically, the elastic elements include a spring 35 and a telescopic rod 36, with both ends of the telescopic rod 36 fixedly connected to the sides of the support bar 34 and the strip-shaped placement seat 31, respectively. When the feeding mechanism 3 moves to the right, the support bar 34 abuts against the right side of the trough 7. As it continues to move, the elastic elements are compressed, causing the strip-shaped placement seat 31 to drive the valve plate limiter 18 to continue moving forward. At the same time, the eccentric roller 5 rotates, pressing down the valve plate limiter 18.

[0027] like Figure 1-2 As shown, in order to facilitate the positioning of the feeding mechanism 3, a marker block 11 is installed on the feeding mechanism 3. In this example, there are two marker blocks 11. A detection element 12 is also provided on the side of the limiting pressure rod 6. The detection element 12 is a proximity sensor. Each detection element 12 corresponds to a marker block 11. The detection element 12 determines the position of the feeding mechanism 3 by detecting the position of the marker block 11, and then determines the bending length of the valve plate limiter 18. At the same time, the setting of the marker block 11 also makes it easier for the robot to accurately place the valve plate limiter 18 onto the strip placement seat 31.

[0028] like Figure 4-5As shown, three eccentric rollers 5 are provided, and their diameter gradually increases along the arc structure 2. The eccentric positions of the two end faces of the eccentric rollers 5 are connected to the side plates 4 through shafts 13, and each shaft 13 is fixedly connected to a transmission wheel 14. The transmission wheels 14 are connected to each other through a conveyor belt 15, and an adjusting wheel 16 is provided between two adjacent transmission wheels 14. A motor 17 is driven to one of the shafts 13, and the motor 17 drives one eccentric roller 5 to rotate, and the remaining eccentric rollers 5 are driven to rotate by the transmission belt. The valve plate is limited under the first eccentric tube on the left. After the positioner 18, the two eccentric rollers 5 press down on the valve plate limiter 18 in sequence, thereby completing the downward bending of the valve plate limiter 18. The axes of the shafts 13 connecting the two ends of the same eccentric roller 5 are on a straight line, and the axes of the three shafts 13 on the same side are on the same plane, which makes it easy for the conveyor belt 15 to drive the shafts 13 to rotate. Furthermore, the position of the eccentric roller 5 closest to the feeding mechanism 3 and the farthest distance between the arc structure 2 is not lower than the top surface of the limiter valve plate, which makes it easy for the valve plate limiter 18 to be pushed under the eccentric roller 5 and complete the downward bending when the eccentric roller 5 rotates.

[0029] Its working principle is as follows: the blank of the valve plate limiter 18 is fed into the arc structure 2 by the feeding mechanism 3. The eccentric roller 5 rotates and presses down on the valve plate limiter 18, so that the bending area of ​​the valve plate limiter 18 bends downward and fits the arc structure 2. The valve plate limiter 18 is bent by gradually pressing down, which reduces the rebound of the valve plate limiter 18, improves the quality of the valve plate limiter 18, and thus improves the production qualification rate. Multiple valve plate limiters 18 can be pressed down at the same time, which improves the production efficiency.

[0030] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A valve plate limiter bending device, comprising a main body, characterized in that: One end surface of the main body is an arc-shaped structure, and a feeding mechanism that slides towards the arc-shaped structure is provided on the main body. Side plates are fixed on both sides of the main body, and an eccentric roller is provided between the side plates above the arc-shaped structure. The shortest distance between the eccentric roller and the arc-shaped structure is the same as the thickness of the valve plate limiter. A limit bar is provided on the side of the arc-shaped structure above the main body. The two ends of the limit bar are fixedly connected to the side plates. The distance between the limit bar and the upper surface of the main body is the same as the thickness of the valve plate limiter. Three eccentric rollers are provided, and their diameter gradually increases along the arc-shaped structure. The eccentric positions of the two end faces of the eccentric rollers are connected to the side plates through shafts. The main body has a series of shafts, each with a fixed drive wheel. The drive wheels are connected by a conveyor belt, and an adjusting wheel is provided between two adjacent drive wheels. A motor is connected to one of the shafts. The top surface of the main body has a groove, and a slide rail is provided in the groove. The feeding mechanism is slidably connected to the slide rail. A mounting frame is fixed in the groove, and a pneumatic rod is mounted on the mounting frame. The output end of the pneumatic rod is connected to the feeding mechanism. The feeding mechanism includes a strip-shaped placement seat with several placement slots. A limit post is provided in each placement slot, and the limit post is inserted into the mounting hole of the valve plate limiter.

2. The valve plate limiter bending device according to claim 1, characterized in that: A support bar is provided on one side of the strip-shaped placement seat. The support bar is connected to the strip-shaped placement seat by an elastic element. The top surface of the support bar, the bottom surface of the limiting groove, and the top surface of the main body are on the same plane.

3. The valve plate limiter bending device according to claim 2, characterized in that: The elastic element is provided in at least two symmetrically arranged, and the elastic element includes a spring and a telescopic rod. The two ends of the telescopic rod are respectively fixedly connected to the side of the support bar and the strip-shaped placement seat.

4. The valve plate limiter bending device according to claim 1, characterized in that: It also includes a marker block and a detection element. The marker block is fixed to the feeding mechanism, and the detection element determines the moving position of the feeding mechanism by detecting the position of the marker block.

5. The valve plate limiter bending device according to claim 1, characterized in that: The axes of the connecting shafts at both ends of the same eccentric roller are on a straight line, and the axes of the three shafts on the same side are on the same plane.

6. The valve plate limiter bending device according to claim 5, characterized in that: The position of the eccentric roller closest to the feeding mechanism and the farthest distance between the arc structure is not lower than the top surface of the limit valve plate.

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