Push rod mechanism capable of resetting through self-weight of swing block
By using the push rod mechanism of the swing block self-repositioning, and utilizing gravity flipping and resetting, the problem of fatigue failure of torsion springs is solved, the processing accuracy and continuity of the shearing machine are improved, maintenance costs are reduced, and production efficiency is increased.
Patent Information
- Application Number
- CN202522498395.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-11-25
AI Technical Summary
In existing sheet metal transition flipping mechanisms, torsion springs, as reset elements, are prone to fatigue failure, leading to the failure of the swing block's springback reset function. This affects the processing accuracy and continuity of the shearing machine and results in high maintenance costs.
The push rod mechanism with self-resetting swing block utilizes gravity to lift the blocking part on the swing block. The plate flips over by contacting the blocking part through the notch of the sheet metal transition shaft and then resets under gravity. This avoids the use of torsion springs and ensures stable operation of the mechanism.
It improves the accuracy and continuity of sheet metal conveying, reduces maintenance costs, enhances the production efficiency and product quality of the shearing machine, and avoids equipment failures caused by spring breakage.
Smart Images
Figure CN223819739U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metal processing equipment especially utilizes a push rod mechanism of swing block self-resetting. BACKGROUND
[0002] In the tinplate processing field, the plate shearing machine is the core equipment for realizing the fixed-length shearing of the tinplate, and the tinplate transition turning plate mechanism as a key matching component of the plate shearing machine has the main function of receiving the plate to be processed, guiding the plate to be processed to be accurately fed during the shearing of the tinplate, and assisting the unloading after the shearing is completed, thereby directly affecting the shearing accuracy and production continuity of the equipment. The existing tinplate transition turning plate mechanism is usually composed of a tinplate transition rotating shaft, a swing block, a mounting seat and a reset component, wherein the reset reliability of the swing block is a core element for ensuring the stable operation of the mechanism.
[0003] In the current industry, the reset function of the swing block is generally realized by a torsion spring. The specific structure is that the torsion spring is coaxially installed on the rotating shaft of the swing block or embedded in the middle position of the swing block, and the two ends of the torsion spring are connected with the swing block and the fixed mounting seat respectively. The swing block always maintains the initial working state of standing upright by the elastic potential energy generated by the pre-torsion of the spring. During the operation of the mechanism, when the tinplate is conveyed to the transition turning plate area, the swing block is pushed by the tinplate in the horizontal direction, so that the swing block rotates around the transition rotating shaft and compresses the torsion spring. After the tinplate passes or the shearing action is completed, the torsion spring releases the stored elastic potential energy, drives the swing block to rotate in the opposite direction and resets to the upright state to welcome the next tinplate conveying cycle.
[0004] However, the structure using the torsion spring as the reset element has significant reliability defects. As a typical elastic element, the service life of the torsion spring is restricted by multiple factors such as material fatigue, environmental erosion and working condition load. In the continuous operation of the plate shearing machine, the torsion spring needs to repeatedly bear torsional deformation, which is prone to elastic fatigue failure, which is manifested as micro-cracks appearing on the spring wire and gradually expanding, and finally leading to fracture. At the same time, the metal debris, cooling liquid and humid air that may exist in the tinplate processing environment can accelerate the corrosion and wear of the surface of the spring, further shortening the service life of the spring.
[0005] Once the torsion spring is broken, the rebound reset function of the swing block will be immediately lost, causing the swing block to fail to return to the upright state. At this time, the subsequent delivery of the iron sheet cannot be accurately guided by the swing block, and problems such as deviation and jamming are prone to occur, which will cause the equipment to stop. In order to resume production, the operator needs to disassemble the protective parts of the transition flap mechanism after stopping, remove the broken spring and replace it with a new one. This process not only consumes additional labor costs, but also causes production interruption and reduces overall processing efficiency. In addition, even if high-quality spring materials or optimized assembly processes are used, the inherent problem of spring fatigue failure cannot be fundamentally avoided, and only the replacement cycle can be extended, but the hidden danger of equipment failure caused by spring failure cannot be completely solved. Content of the utility model
[0006] The technical problem to be solved by the utility model is to provide a push rod mechanism with swing block self-resetting, which does not need to use a torsion spring, can avoid the rebound failure problem caused by spring breakage, reduce maintenance cost and improve production efficiency.
[0007] In order to solve the above technical problems, the technical scheme adopted is as follows:
[0008] A push rod mechanism with swing block self-resetting, comprising an iron sheet transition shaft and a swing block, characterized in that: it further comprises a pull rod and a translation seat, the translation seat is installed on the pull rod; the left part of the swing block is hinged to the translation seat, the left end of the swing block is provided with an upward extending blocking part, the right side surface of the blocking part is an inclined surface inclined to the right from top to bottom; the end of the iron sheet transition shaft is provided with a gap towards the right side, and the lower part of the iron sheet transition shaft corresponds to the top end position of the blocking part.
[0009] Usually, a plurality of push rod mechanisms are provided on the same shearing machine, wherein the pull rod in each push rod mechanism can adopt the same pull rod; the iron sheet transition shafts in each push rod mechanism are arranged in sequence along the iron sheet conveying direction, and the two ends of the iron sheet transition shaft are rotatably installed on the rack through return springs.
[0010] When the aforementioned push rod mechanism is in use, the swing block is in a state where the blocking part is raised under the action of gravity. During operation, the pull rod drives the translation seat to move from right to left. During the translation process, the top of the blocking part will first contact the notch of the sheet metal transition shaft. As the translation seat continues to move, the sheet metal transition shaft will rotate under the action of the blocking part at its lower end, causing the sheet metal set on the sheet metal transition shaft to flip over until the blocking part successfully passes through the notch of the sheet metal transition shaft. At this time, the sheet metal transition shaft will reset under the action of the return spring. Then, the pull rod drives the translation seat to move from left to right again, and the sheet metal transition shaft will contact the inclined surface of the blocking part. At this time, the blocking part will swing to the lower left around the hinge point under the pressure of the sheet metal transition shaft, so that the sheet metal transition shaft can pass over the blocking part smoothly without swinging. After the sheet metal transition shaft passes the blocking part, the swing block can reset under the action of gravity, and the cycle continues. This pusher mechanism utilizes gravity to keep the blocking part on the swing block in an upward position, and a notch corresponding to the blocking part is opened at the end of the sheet metal transition shaft. This allows the swing block to hold the sheet metal transition shaft in place and rotate it as it moves from right to left with the translation seat, thus flipping the sheet metal and guiding it precisely into the subsequent processing stage. When the swing block moves from left to right with the translation seat, it can also cause the sheet metal transition shaft to press down the blocking part. During this process, the sheet metal transition shaft will not rotate, and the swing block can also rely on self-realignment to return the pusher mechanism to its initial state, preparing for the conveying of the next section of sheet metal. This ensures the conveying accuracy and continuity of the sheet metal in the transition flipping stage, avoids problems such as sheet metal skewing and jamming, and improves the processing efficiency and product quality of the shearing machine.
[0011] In a preferred embodiment, the end face of the notch is a first vertical face. Using a first vertical face for the end face of the notch ensures that when the blocking part contacts the end face of the notch, the sheet metal transition shaft can be smoothly lifted and rotated by the blocking part.
[0012] In a further preferred embodiment, the left side of the blocking part is a second vertical surface corresponding to the first vertical surface. Using a second vertical surface on the left side of the blocking part further prevents slippage of the sheet metal transition shaft when the blocking part contacts the end face of the notch.
[0013] In a preferred embodiment, the inclined surface is an arc-shaped surface that matches the shape of the sheet metal transition shaft. The arc-shaped surface makes it easier for the sheet metal transition shaft to press down the blocking part and smoothly pass over it upon contact.
[0014] In a preferred embodiment, the swing block includes a blocking part, a connecting part, and a weighting part. The blocking part and the weighting part are connected to the left and right ends of the connecting part, respectively. The blocking part extends upward from the left end of the connecting part, and the weighting part extends downward to the right from the right end of the connecting part. The hinge point between the swing block and the translation seat is located at the lower end of the blocking part, and the sum of the weights of the connecting part and the weighting part is greater than that of the blocking part. In this way, the swing block can push the sheet metal transition shaft to rotate during its movement from left to right; and during its movement from right to left, after the sheet metal transition shaft smoothly passes the swing block, the swing block can return to the upward-curved state of the blocking part under the influence of gravity.
[0015] In a preferred embodiment, the translation seat is provided with a swing block mounting groove, and the swing block is located in the swing block mounting groove and hinged to the groove wall.
[0016] The beneficial effects of this utility model are as follows: this push rod mechanism does not require the use of torsion springs, which can avoid the problem of spring rebound failure caused by spring breakage, reduce maintenance costs, and also ensure the conveying accuracy and continuity of sheet metal in the transition flipping stage, thereby improving production efficiency. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of multiple push rod mechanisms combined in an embodiment of this utility model;
[0018] Figure 2 This is a side view of the push rod mechanism in an embodiment of this utility model;
[0019] Figure 3 This is a diagram illustrating the motion process of the pull rod driving the translation seat to translate from right to left in an embodiment of this utility model.
[0020] Figure 4 This is a diagram illustrating the motion process of the pull rod driving the translation seat to move from left to right in an embodiment of this utility model. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0022] like Figures 1-2 The push rod mechanism shown includes a sheet metal transition shaft 1, a swing block 2, a pull rod 3, and a translation seat 4. The translation seat 4 is mounted on the pull rod 3. The left part of the swing block 2 is hinged to the translation seat 4. The left end of the swing block 2 is provided with an upwardly extending blocking part 201. The right side of the blocking part 201 is an inclined surface 2011 that slopes from top to bottom and to the right. The end of the sheet metal transition shaft 1 has a notch 101 facing to the right, and the lower part of the sheet metal transition shaft 1 corresponds to the top end of the blocking part 201.
[0023] The same shearing machine is equipped with multiple push rod mechanisms, and the pull rod 3 in each push rod mechanism can be the same pull rod 3; the sheet metal transition shaft 1 in each push rod mechanism is arranged sequentially at intervals along the sheet metal conveying direction, and the two ends of the sheet metal transition shaft 1 are rotatably mounted on the frame through return springs.
[0024] When the above-mentioned push rod mechanism is in use, the swing block 2 is in a state where the blocking part 201 is raised under the action of gravity; such as Figure 3 As shown, during operation, the pull rod 3 drives the translation seat 4 to move from right to left. During the translation process, the top of the blocking part 201 will first contact the notch 101 of the sheet metal transition shaft 1. As the translation seat 4 continues to move, the sheet metal transition shaft 1 will rotate under the pressure of the blocking part 201 at its lower end, causing the sheet metal set on the sheet metal transition shaft 1 to flip over until the blocking part 201 passes smoothly through the notch 101 of the sheet metal transition shaft 1. At this time, the sheet metal transition shaft 1 returns to its original position under the action of the return spring. Then, as... Figure 4 As shown, the lever 3 drives the translation seat 4 to move from left to right again, and the sheet metal transition shaft 1 will contact the inclined surface 2011 of the blocking part 201. At this time, the blocking part 201 will swing to the lower left around the hinge point under the pressure of the sheet metal transition shaft 1, so that the sheet metal transition shaft 1 can pass the blocking part 201 smoothly without swinging. After the sheet metal transition shaft 1 passes the blocking part 201, the swing block 2 can reset under the action of gravity, and the cycle continues. This pusher mechanism utilizes gravity to keep the blocking part 201 on the swing block 2 in an upward-curved state, and a notch 101 corresponding to the blocking part 201 is opened at the end of the sheet metal transition shaft 1. This allows the swing block 2 to hold the sheet metal transition shaft 1 in place and rotate it as it moves from right to left with the translation seat 4, thus flipping the sheet metal and guiding it precisely into the subsequent processing stage. When the swing block 2 moves from left to right with the translation seat 4, it can also press down the blocking part 201 on the sheet metal transition shaft 1. During this process, the sheet metal transition shaft 1 will not rotate, and the swing block 2 can also rely on self-realignment to return the pusher mechanism to its initial state, preparing for the conveying of the next section of sheet metal. This ensures the conveying accuracy and continuity of the sheet metal in the transition flipping stage, avoids problems such as sheet metal skewing and jamming, and improves the processing efficiency and product quality of the shearing machine.
[0025] The end face of the notch 101 is the first vertical face 1011. The use of the first vertical face 1011 on the end face of the notch 101 ensures that when the blocking part 201 contacts the end face of the notch 101, the sheet metal transition shaft 1 can be smoothly lifted and rotated by the blocking part 201.
[0026] The left side of the blocking part 201 is a second vertical surface 2012 corresponding to the first vertical surface 1011. The use of the second vertical surface 2012 on the left side of the blocking part 201 can further prevent the iron sheet transition shaft 1 from slipping when the blocking part 201 contacts the end face of the notch 101.
[0027] The inclined surface 2011 is an arc-shaped surface that matches the shape of the sheet metal transition shaft 1. The arc-shaped surface makes it easier for the sheet metal transition shaft 1 to press down the blocking part 201 and pass smoothly when in contact.
[0028] The swing block 2 includes a blocking part 201, a connecting part 202, and a weighting part 203. The blocking part 201 and the weighting part 203 are connected to the left and right ends of the connecting part 202, respectively. The blocking part 201 extends upward from the left end of the connecting part 202, and the weighting part 203 extends downward to the right from the right end of the connecting part 202. The hinge point between the swing block 2 and the translation seat 4 is located at the lower end of the blocking part 201, and the sum of the weights of the connecting part 202 and the weighting part 203 is greater than that of the blocking part 201. In this way, the swing block 2 can push the sheet metal transition shaft 1 to rotate during the movement from left to right. After the sheet metal transition shaft 1 successfully passes the swing block 2 during the movement from right to left, the swing block 2 can also return to the upward-curved state of the blocking part 201 under the action of gravity.
[0029] The translation seat 4 is provided with a swing block mounting groove 401, and the swing block 2 is located in the swing block mounting groove 401 and is hinged to the groove wall of the swing block mounting groove 401.
Claims
1. A push rod mechanism utilizing a self-repeating oscillating block, comprising a sheet metal transition shaft and an oscillating block, characterized in that: It also includes a pull rod and a translation seat, with the translation seat mounted on the pull rod; the left part of the swing block is hinged to the translation seat, and the left end of the swing block is provided with an upwardly extending blocking part, the right side of the blocking part being an inclined surface that slopes from top to bottom to the right; the end of the sheet metal transition shaft has a notch facing to the right, and the lower part of the sheet metal transition shaft corresponds to the top position of the blocking part.
2. The push rod mechanism utilizing the self-repeating positioning of a swing block as described in claim 1, characterized in that: The end face of the notch is the first vertical face.
3. The push rod mechanism utilizing the self-repeating positioning of a swing block as described in claim 2, characterized in that: The left side of the blocking part is a second vertical surface corresponding to the first vertical surface.
4. The push rod mechanism utilizing the self-repeating positioning of a swing block as described in claim 1, characterized in that: The inclined surface is an arc-shaped surface that matches the shape of the sheet metal transition shaft.
5. A push rod mechanism utilizing a self-repeating oscillating block as described in claim 1, characterized in that: The swing block includes a blocking part, a connecting part, and a weighting part. The blocking part and the weighting part are connected to the left and right ends of the connecting part, respectively. The blocking part extends upward from the left end of the connecting part, and the weighting part extends downward to the right from the right end of the connecting part. The hinge point between the swing block and the translation seat is located at the lower end of the blocking part, and the sum of the weights of the connecting part and the weighting part is greater than that of the blocking part.
6. The push rod mechanism utilizing the self-repeating positioning of a swing block as described in claim 1, characterized in that: The translation seat is provided with a swing block mounting groove, and the swing block is located in the swing block mounting groove and is hinged to the groove wall.