Bending machine with damping function

Abstract

The invention relates to the technical field of intelligent manufacturing, and discloses a bending machine with a damping function, which comprises a base, two connecting arms are fixedly connected to the left side and the right side of the top end of the base, a hydraulic cylinder is fixedly connected to the top ends of the two connecting arms, and a telescopic cylinder is fixedly connected to the bottom wall of the hydraulic cylinder. A hydraulic rod is slidably connected to the bottom wall of the telescopic cylinder, a punching head is fixedly connected to the bottom wall of the hydraulic cylinder, a damping groove is formed in the top wall of the base, and a damping spring is fixedly connected to the inner bottom wall of the damping groove. The hydraulic rod moves downwards in the telescopic cylinder through the hydraulic driving mechanism so as to drive the punching head to move to punch a workpiece, meanwhile, damping in the punching process is achieved through downward movement of a damping spring, metal bending is conducted stably, the damping effect is good, and the practicability is high. And meanwhile, vibration of the die is achieved through contact and collision between the knocking block and the limiting plate, the internal stress of metal is removed in time through vibration, and the stamping precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent manufacturing, and in particular to a bending machine with a shock absorbing function. Background Art

[0002] A bending machine is a large-scale mechanical equipment that performs stamping plasticity on metal workpieces. Its working principle is to achieve the plasticity of the workpiece through the pressure between the stamping parts and the mold, and finally to achieve the bending of the metal plate to meet the needs of product production.

[0003] The existing bending machines have the following technical defects when in use: First, during the stamping and bending process, due to the certain degree of shaking generated when the stamping parts squeeze the metal plate, the workpiece is prone to deviation during the plastic process, resulting in large errors in the processed products; second, due to the existence of internal stress in the metal during the pressure deformation process, if the plastic metal surface is not de-stressed in time, the metal will have a certain restoring force after the stamping is completed, causing the metal to deform, resulting in poor bending effect of the product. Summary of the invention

[0004] In view of the shortcomings of the existing bending machines mentioned in the background technology during use, the present invention provides a bending machine with a shock absorbing function, which has the advantages of good shock absorbing effect and effective stress removal, and solves the technical problems mentioned in the above background technology.

[0005] The present invention provides the following technical scheme: a bending machine with a shock absorbing function, comprising a base, two connecting arms are fixedly connected to the left and right sides of the top of the base, the tops of the two connecting arms are fixedly connected to a hydraulic cylinder, the bottom wall of the hydraulic cylinder is fixedly connected to a telescopic cylinder, the bottom wall of the telescopic cylinder is slidably connected to a hydraulic rod, the bottom wall of the hydraulic cylinder is fixedly connected to a punching head, the top wall of the base is provided with a shock absorbing groove, the inner bottom wall of the shock absorbing groove is fixedly connected to a shock absorbing spring, the other end of the shock absorbing spring is fixedly connected to a mold, the side wall of the mold is fixedly connected to a knocking block, a positioning plate is provided laterally on the top of the shock absorbing groove, a positioning mechanism is provided inside the positioning plate, a limiting groove is provided on the side wall of the shock absorbing groove, a knocking mechanism is provided inside the limiting groove, a telescopic rod is provided inside the shock absorbing spring and slidably connected to the top wall of the shock absorbing groove, and a reflux mechanism is provided on the bottom wall of the telescopic rod and extending to the inside of the base.

[0006] Preferably, the positioning mechanism includes a slide rail opened on the inner wall of the positioning plate, a first electromagnet is fixedly connected to the right side of the inner wall of the slide rail, a first spring is fixedly connected to the left side wall of the first electromagnet, the other end of the first spring is fixedly connected to a connecting rod, the connecting rod is slidably connected to the inside of the slide rail, and a limiting block is fixedly connected to the side wall of the connecting rod and the side close to the punching head.

[0007] Preferably, the knocking mechanism includes a second electromagnet fixedly connected to the inner bottom wall of the limiting groove. The upper end of the second electromagnet is fixedly connected to a second spring. The other end of the second spring is fixedly connected to a limiting plate. The bottom side of the limiting plate is rotatably connected to a rotating column. The left and right side walls of the rotating column are fixedly connected to the side walls of the limiting groove.

[0008] Preferably, the reflux mechanism includes a reflux chamber fixedly connected inside the base. The left and right side walls of the reflux chamber are provided with reflux pipes penetrating through. The other ends of the reflux pipes pass through the inside of the connecting arm and extend into the inside of the hydraulic cylinder. A piston is fixedly connected to the inner top of the hydraulic cylinder. A solenoid valve is provided at the top end of the reflux pipe and inside the hydraulic cylinder.

[0009] Preferably, the limiting block is provided as a wedge-shaped block. The wedge-shaped side wall of the limiting block is parallel to the side wall of the shock-absorbing groove. The wedge-shaped bottom wall of the limiting block is parallel to the top wall of the positioning plate.

[0010] Preferably, the number of the limiting plates is arranged in a staggered manner along adjacent limiting grooves, and the difference in the number of limiting plates inside adjacent limiting grooves is, and the limiting plates are arranged at equal intervals along the inside of the limiting grooves.

[0011] Preferably, a magnet of the same level as the second electromagnet is provided inside the limiting plate. The length value of the limiting plate is greater than the distance value between the rotating column and the shock-absorbing groove.

[0012] Preferably, the connecting rod is made of a magnetic material, and the magnetism of the first electromagnet is different from that of the connecting rod.

[0013] The present invention has the following beneficial effects: 1. The present invention realizes the downward movement of the hydraulic rod along the telescopic cylinder through the hydraulic driving mechanism, and then drives the punching head to move to realize the punching of the workpiece. At the same time, the downward movement of the shock-absorbing spring realizes the shock absorption during the punching process, enabling the metal bending to proceed stably, reducing the shaking during the bending process, improving the punching accuracy, and having a good shock absorption effect.

[0014] 2. After the punching head is driven by the hydraulic driving mechanism to complete the punching and move upward, the second electromagnet is energized, which drives the limiting plate to rotate along the rotating column, causing the second spring to elongate and the limiting plate to extend to the side wall of the shock-absorbing groove. At the same time, the vibration of the mold is realized through the contact collision between the knocking block and the limiting plate. The internal stress of the metal is removed in time through the vibration, improving the punching accuracy.

[0015] 3. The present invention limits and clamps the workpiece to be processed through the positioning plates on both sides, reducing the shaking during the stamping process, improving the clamping accuracy. At the same time, through the operation of the first electromagnet, under the action of the magnetic suction force, the first spring is pulled, and then the limiting block is driven to move inside the slide rail to realize the automatic feeding of the metal to be processed, significantly improving the processing efficiency.

[0016] 4. The present invention realizes the hydraulic oil in the return chamber during the stamping process to flow back to the inside of the hydraulic cylinder through the return pipe by opening the solenoid valve inside the hydraulic cylinder and through the coordinated setting between the telescopic rod and the shock-absorbing spring, realizing the recycling of the hydraulic oil and the automatic reset of the stamping mechanism, with a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the positioning mechanism of the present invention; Figure 3 is of the present invention Figure 2 the enlarged schematic diagram of the structure at A in; Figure 4 is a sectional three-dimensional structural schematic diagram of the present invention; Figure 5 is a structural schematic diagram of the return mechanism of the present invention; Figure 6 is a three-dimensional structural schematic diagram of the knocking mechanism of the present invention; Figure 7 is of the present invention Figure 6 the enlarged schematic diagram of the structure at B in.

[0018] In the figure: 1. Base; 2. Connecting arm; 3. Hydraulic cylinder; 31. Solenoid valve; 32. Piston; 4. Telescopic cylinder; 41. Hydraulic rod; 5. Stamping head; 6. Mold; 61. Knocking block; 7. Positioning plate; 71. Slide rail; 72. First spring; 73. Connecting rod; 74. Limiting block; 75. First electromagnet; 8. Shock-absorbing groove; 9. Shock-absorbing spring; 10. Limiting groove; 101. Rotating column; 102. Limiting plate; 103. Second spring; 104. Second electromagnet; 11. Telescopic rod; 12. Return pipe; 13. Return chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0020] Please refer toFigures 1-7 , a bending machine with a shock-absorbing function, includes a base. On the left and right sides of the top of the base 1, two connecting arms 2 are fixedly connected. At the top of the two connecting arms 2, a hydraulic cylinder 3 is fixedly connected. At the bottom wall of the hydraulic cylinder 3, a telescopic cylinder 4 is fixedly connected. A hydraulic rod 41 is slidably connected to the bottom wall of the telescopic cylinder 4. At the bottom wall of the hydraulic cylinder 41, a stamping head 5 is fixedly connected. A shock-absorbing groove 8 is opened on the top wall of the base 1. A shock-absorbing spring 9 is fixedly connected to the inner bottom wall of the shock-absorbing groove 8. The other end of the shock-absorbing spring 9 is fixedly connected to a mold 6. A knocking block 61 is fixedly connected to the side wall of the mold 6. A positioning plate 7 is arranged horizontally at the top of the shock-absorbing groove 8. A positioning mechanism is arranged inside the positioning plate 7. A limiting groove 10 is opened on the side wall of the shock-absorbing groove 8. A knocking mechanism is arranged inside the limiting groove 10. Inside the shock-absorbing spring 9 and slidably connected to the top wall of the shock-absorbing groove 8, there is a telescopic rod 11. At the bottom wall of the telescopic rod 11 and extending into the inside of the base 1, there is a reflux mechanism. When the hydraulic mechanism is turned on to make the stamping mechanism stamp and bend the component plastically, at the beginning, the piston 32 inside the hydraulic cylinder 3 moves downward. Through hydraulic transmission, the hydraulic rod 41 inside the telescopic cylinder 4 moves downward, thereby driving the stamping head 5 to move synchronously so that the stamping head 5 cooperates with the mold 6 to achieve the effect of extruding and plasticizing the workpiece. During the stamping process, since the shock-absorbing spring 9 fixedly connected to the bottom wall of the mold 6 is subjected to the pressure from the top and will move downward, the shock-absorbing spring 9 is compressed, driving the telescopic rod 11 to move downward towards the lower part of the reflux chamber 13. Through the hydraulic driving mechanism, the hydraulic rod 41 moves downward along the telescopic cylinder 4, thereby driving the stamping head 5 to move to achieve the stamping of the workpiece. At the same time, through the downward movement of the shock-absorbing spring 9, the shock absorption during the stamping process is realized, enabling the metal bending to proceed stably, reducing the shaking during the bending process, improving the stamping accuracy, and having a good shock-absorbing effect.

[0021] The positioning mechanism includes a slide rail 71 opened on the inner side wall of the positioning plate 7. On the right side of the inner wall of the slide rail 71, a first electromagnet 75 is fixedly connected. On the left side wall of the first electromagnet 75, a first spring 72 is fixedly connected. The other end of the first spring 72 is fixedly connected to a connecting rod 73. The connecting rod 73 is slidably connected inside the slide rail 71. On the side wall of the connecting rod 73 and on the side close to the stamping head 5, a limiting block 74 is fixedly connected. After the downward stamping is completed, at this time, the first electromagnet 75 is controlled. Under the adsorption of the magnetic force, the first spring 72 is compressed, and the limiting block 74 moves towards the inside of the slide rail 71. The to-be-processed original parts are clamped and limited by the two positioning plates 7, reducing the shaking during the stamping process, improving the clamping accuracy. At the same time, through the operation of the first electromagnet 75, under the action of the magnetic attraction force, the first spring 72 is pulled, thereby driving the limiting block 74 to move along the inside of the slide rail 71 to realize the automatic feeding of the to-be-processed metal, significantly improving the processing efficiency.

[0022] The knocking mechanism includes a second electromagnet 104 fixedly connected to the inner bottom wall of the limiting groove 10. The upper end of the second electromagnet 104 is fixedly connected to a second spring 103. The other end of the second spring 103 is fixedly connected to a limiting plate 102. The bottom side of the limiting plate 102 is rotatably connected to a rotating column 101. The left and right side walls of the rotating column 101 are fixedly connected to the side walls of the limiting groove 10. When the solenoid valve 31 and the second electromagnet 104 are turned on, the originally compressed shock-absorbing spring 9 returns to its initial state to drive the telescopic rod 11 to move upward. At this time, the second electromagnet 104 drives the movement of the same-level magnet arranged inside the limiting plate 102, causing the limiting plate 102 to rotate along the rotating column 101, and the second spring 103 elongates, causing the limiting plate 102 to rotate and extend out of the shock-absorbing groove 8. When the knocking block 61 on the side wall of the mold 6 moves upward and contacts the limiting plate 102, after the stamping head 5 is driven by the hydraulic driving mechanism to complete stamping and move upward, the second electromagnet 104 is energized, thereby driving the limiting plate 102 to rotate along the rotating column 101, causing the second spring 103 to elongate to make the limiting plate 102 extend to the side wall of the shock-absorbing groove 8. At the same time, the vibration of the mold 6 is realized through the contact and collision between the knocking block 61 and the limiting plate 102, and the internal stress of the metal is removed in time through the vibration, improving the stamping accuracy.

[0023] The reflux mechanism includes a reflux chamber 13 fixedly connected inside the base 1. The left and right side walls of the reflux chamber 13 are provided with reflux pipes 12 running through. The other end of the reflux pipe 12 passes through the inside of the connecting arm 2 and extends into the inside of the hydraulic cylinder 3. A piston 32 is fixedly connected to the inner top of the hydraulic cylinder 3. A solenoid valve 31 is provided at the top end of the reflux pipe 12 and inside the hydraulic cylinder 3. When the hydraulic mechanism is turned on to control the stamping mechanism to reset, during the reset process, as the telescopic rod 11 moves upward, the hydraulic oil inside the reflux chamber 13 flows back to the inside of the hydraulic rod 41 through the reflux pipe 12 and the solenoid valve 31, realizing the recycling of the hydraulic oil, ensuring the reset of the hydraulic oil volume inside the hydraulic cylinder 3, and facilitating the next stamping.

[0024] The limiting block 74 is set as a wedge-shaped block. The wedge-shaped side wall of the limiting block 74 is parallel to the side wall of the shock-absorbing groove 8, and the wedge-shaped bottom wall of the limiting block 74 is parallel to the top wall of the positioning plate 7. When the stamped metal plate rises, the top of the metal plate is clamped and limited by the bottom wall opening of the limiting block 74, and then the metal plate is translated and corrected for the secondary stamping position through the side wall opening of the limiting block 74.

[0025] The number of the limiting plates 102 is arranged to be mutually staggered along adjacent limiting grooves 10, and the difference in the number of the limiting plates 102 inside adjacent limiting grooves 10 is 1. The limiting plates 102 are arranged at equal intervals along the inside of the limiting grooves 10. The mutually staggered arrangement of the limiting plates 102 increases the amplitude during the contact between the knocking block 61 and the limiting plate 102, strengthens the vibration effect, and makes the stress elimination more thorough.

[0026] Inside the limiting plate 102, there is a magnet of the same level as the second electromagnet 104. The length value of the limiting plate 102 is greater than the spacing value between the rotating column 101 and the shock-absorbing groove 8. Ensure that when the limiting plate 102 rotates, it can rotate to the outside of the shock-absorbing groove 8, so as to realize the contact vibration knocking between the side wall of the limiting plate 102 and the knocking block 61.

[0027] The connecting rod 73 is made of magnetic material, and the magnetic properties of the first electromagnet 75 and the connecting rod 73 are different. Ensure that the magnetism generated by the first electromagnet 75 adsorbs the connecting rod 73 to position and correct the metal plate.

[0028] The usage method (working principle) of the present invention is as follows: Before stamping, first place the element to be processed between the positioning plates 7 on both sides to realize the clamping and positioning of the workpiece. Then, turn on the hydraulic mechanism so that the stamping mechanism stamps and bends the element plastically. At the beginning, the piston 32 inside the hydraulic cylinder 3 moves downward. Through hydraulic transmission, the hydraulic rod 41 inside the telescopic cylinder 4 moves downward, and then drives the stamping head 5 to move synchronously, so that the stamping head 5 cooperates with the mold 6 to achieve the effect of extruding the workpiece plastically. During the stamping process, since the shock-absorbing spring 9 fixedly connected to the bottom wall of the mold 6 is subjected to the pressure at the top and will move downward, the shock-absorbing spring 9 is compressed, driving the telescopic rod 11 to move downward towards the lower part of the return chamber 13. Through the shock absorption of the shock-absorbing spring 9, the vibration during the stamping process is effectively eliminated, improving the bending accuracy.

[0029] Next, turn on the hydraulic mechanism to control the stamping mechanism to reset. When resetting, turn on the solenoid valve 31 and the second electromagnet 104. The originally compressed shock-absorbing spring 9 returns to its initial state and drives the telescopic rod 11 to move upward. At this time, the second electromagnet 104 drives the magnet of the same level inside the limiting plate 102 to move, so that the limiting plate 102 rotates along the rotating column 101, and the second spring 103 elongates, so that the limiting plate 102 rotates and extends out of the shock-absorbing groove 8, and contacts and collides with the knocking block 61 on the side wall of the mold 6 as it moves upward, realizing the vibration effect. Through vibration, the internal stress of the metal is eliminated. At the same time, as the telescopic rod 11 moves upward, the hydraulic oil inside the return chamber 13 flows back to the hydraulic rod 3 through the return pipe 12 and the solenoid valve 31, realizing the recycling of the hydraulic oil, ensuring the reset of the hydraulic oil volume inside the hydraulic cylinder 3, and facilitating the next stamping.

[0030] When the downward stamping is completed, control the first electromagnet 75 at this time. Under the adsorption of the magnetic force, the first spring 72 is compressed, and the limiting block 74 moves towards the inside of the slide rail 71. Through the limiting effect of the side wall of the limiting block 74, the positioning and adjustment of the stamping area of the metal plate are realized, facilitating secondary stamping and improving the stamping efficiency.

[0031] During the synchronous downward movement of the hydraulic rod 41 and the telescopic rod 11, since the stamping process requires the metal plate clamped between the stamping head 5 and the die 6 to be in close contact to ensure stable pressure transmission, the ratio of the bottom wall cross-sectional area of the hydraulic rod 41 to that of the telescopic rod 11 is fixed to achieve a downward differential speed, ensuring that when the telescopic rod 11 at the bottom side runs to the bottom of the return chamber 13, the pressure is stably transmitted.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending machine with a shock absorbing function, comprising a base (1), characterized in that: Two connecting arms (2) are fixedly connected to the left and right sides of the top of the base (1); the tops of the two connecting arms (2) are fixedly connected to a hydraulic cylinder (3); the bottom wall of the hydraulic cylinder (3) is fixedly connected to a telescopic cylinder (4); the bottom wall of the telescopic cylinder (4) is slidably connected to a hydraulic rod (41); the bottom wall of the hydraulic cylinder (41) is fixedly connected to a punching head (5); a shock absorbing groove (8) is provided on the top wall of the base (1); a shock absorbing spring (9) is fixedly connected to the inner bottom wall of the shock absorbing groove (8); the other end of the shock absorbing spring (9) is fixedly connected to the bottom wall of the shock absorbing groove (8); A mold (6) is fixedly connected to the mold (6), a knocking block (61) is fixedly connected to the side wall of the mold (6), a positioning plate (7) is provided on the top of the shock absorbing groove (8) in the transverse direction, a positioning mechanism is provided inside the positioning plate (7), a limiting groove (10) is provided on the side wall of the shock absorbing groove (8), a knocking mechanism is provided inside the limiting groove (10), a telescopic rod (11) is provided inside the shock absorbing spring (9) and slidably connected to the top wall of the shock absorbing groove (8), and a reflux mechanism is provided on the bottom wall of the telescopic rod (11) and extends to the inside of the base (1).

2. A bending machine with a shock absorbing function according to claim 1, characterized in that: The positioning mechanism comprises a slide rail (71) provided on the inner wall of the positioning plate (7); a first electromagnet (75) is fixedly connected to the right side of the inner wall of the slide rail (71); a first spring (72) is fixedly connected to the left side wall of the first electromagnet (75); a connecting rod (73) is fixedly connected to the other end of the first spring (72); the connecting rod (73) is slidably connected to the inside of the slide rail (71); a limiting block (74) is fixedly connected to the side wall of the connecting rod (73) close to the punch head (5).

3. The bending machine with shock absorbing function according to claim 1, characterized in that: The knocking mechanism comprises a second electromagnet (104) fixedly connected to the bottom wall of the limiting groove (10), the upper end of the second electromagnet (104) is fixedly connected to a second spring (103), the other end of the second spring (103) is fixedly connected to a limiting plate (102), the bottom side of the limiting plate (102) is rotatably connected to a rotating column (101), and the left and right side walls of the rotating column (101) are fixedly connected to the side walls of the limiting groove (10).

4. The bending machine with shock absorbing function according to claim 1, characterized in that: The reflux mechanism comprises a reflux chamber (13) fixedly connected to the inside of the base (1), a reflux pipe (12) penetrating the left and right side walls of the reflux chamber (13), the other end of the reflux pipe (12) passing through the inside of the connecting arm (2) and extending to the inside of the hydraulic cylinder (3), a piston (32) fixedly connected to the inner top of the hydraulic cylinder (3), and a solenoid valve (31) provided at the top of the reflux pipe (12) and located inside the hydraulic cylinder (3).

5. The bending machine with shock absorbing function according to claim 2, characterized in that: The limit block (74) is configured as a wedge-shaped block, the wedge-shaped side wall of the limit block (74) is parallel to the side wall of the shock-absorbing groove (8), and the wedge-shaped bottom wall of the limit block (74) is parallel to the top wall of the positioning plate (7).

6. The bending machine with shock absorbing function according to claim 3, characterized in that: The number of the limit plates (102) is staggered along adjacent limit slots (10), and the difference in the number of limit plates (102) inside adjacent limit slots (10) is 1. The limit plates (102) are arranged at equal intervals inside the limit slots (10).

7. The bending machine with shock absorbing function according to claim 3 is characterized in that: A magnet of the same level as the second electromagnet (104) is provided inside the limit plate (102), and the length of the limit plate (102) is greater than the distance between the rotating column (101) and the shock absorbing groove (8).

8. The bending machine with shock absorbing function according to claim 3, characterized in that: The connecting rod (73) is made of a magnetic material, and the first electromagnet (75) and the connecting rod (73) have different magnetic properties.

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