Thin material pulling mechanism

Abstract

The utility model discloses a thin material pulling mechanism in the field of feeders, which comprises a slotting tool arranged on an upper die and a material pulling assembly arranged on a lower die, the material pulling assembly comprises a mounting seat, a sliding block is arranged in the mounting seat, the sliding block is connected with the mounting seat through a first elastic piece, a transmission part is arranged on the outer side of the mounting seat, and the transmission part is connected with the sliding block through a second elastic piece. The transmission part is connected with the sliding block through a rotating shaft so that the transmission part can rotate around the rotating shaft. And a feeding needle assembly is arranged on the sliding block, when the upper die and the lower die are closed, the slotting tool moves downwards and makes contact with the transmission part so that the transmission part can rotate, and the sliding block moves in the direction away from the lower die so that the feeding needle assembly can pull the material belt. The feeding device solves the problems that thin materials with the thickness smaller than 0.05 mm are prone to arching, blocking and the like in the feeding process and cannot be conveyed to a working area of a punching machine, enables material belts to be conveyed smoothly, and prevents the phenomena of arching, blocking and the like of the material belts in the feeding process.

Description

Technical Field

[0001] The utility model relates to the technical field of feeders, in particular to a thin material pulling mechanism. Background Art

[0002] Stamping production mainly uses dies to process plates by cutting holes, forming, stretching, extruding, etc., so as to produce various parts and components. These parts and components are widely used in many fields such as automobiles, home appliances, consumer electronics, aerospace, etc. When factories purchase punching machines, they are generally equipped with standard feeders. The feeders are usually installed at the front of the punching machine and feed the materials backwards so that the materials are transported to the working area of ​​the mold.

[0003] As consumer electronic products are becoming increasingly thinner, the materials used are getting thinner. For thin materials below 0.05mm in thickness, due to the thinness of the material and poor rigidity, deformation is easy to occur during the feeding process. The material belt is prone to arching, jamming, etc., resulting in the inability to convey the material belt to the working area of ​​the mold, thereby directly interrupting the production process, causing production stagnation and reduced efficiency.

[0004] The above defects need to be solved urgently. Utility Model Content

[0005] In order to solve the problem that thin materials with a thickness of less than 0.05 mm are very likely to be arched, stuck, etc. during the feeding process and cannot be transported to the working area of ​​the punch press, the utility model provides a thin material pulling mechanism.

[0006] The technical solution of the utility model is as follows:

[0007] A thin material pulling mechanism, comprising a plunger arranged on an upper die and a pulling assembly arranged on a lower die, the pulling assembly comprising a mounting seat, a sliding block arranged inside the mounting seat, the sliding block being connected to the mounting seat via a first elastic member, a transmission component being arranged outside the mounting seat, the transmission component being connected to the sliding block via a rotating shaft, so that the transmission component rotates around the rotating shaft;

[0008] A feed needle assembly is provided on the sliding block. When the upper mold and the lower mold are closed, the insert knife moves downward and contacts the transmission component to rotate the transmission component, and the sliding block moves away from the lower mold so that the feed needle assembly pulls the material strip.

[0009] According to the above-mentioned solution of the utility model, the transmission component includes a retaining ring and a washer, and the retaining ring and the washer are both sleeved on the rotating shaft, and the retaining ring is located on the outside of the washer.

[0010] According to the utility model of the above solution, a guiding inclined surface is arranged on a side of the inserting knife close to the transmission component.

[0011] According to the above scheme of the utility model, the feed needle assembly includes a feed head and a feed head mounting block, the feed head mounting block is arranged below the feed head, the feed head is connected to the feed head mounting block through a second elastic member, and the feed head is plugged into the hole of the material belt.

[0012] According to the utility model of the above scheme, a first stop-retreat surface is provided at the end of the feeding head, and the first stop-retreat surface is inclined so that the height of the side of the feeding head close to the lower mold is smaller than the height of the side of the feeding head away from the lower mold.

[0013] According to the above-mentioned solution of the utility model, the feed needle assembly is divided into two groups, and the two groups of feed needle assemblies are symmetrically arranged on both sides of the material belt.

[0014] According to the above scheme of the utility model, a back-stop needle assembly is also provided in the mounting seat, and the back-stop needle assembly is arranged on the side of the feeding needle assembly close to the lower mold, and the back-stop needle assembly includes a back-stop head, and the back-stop head is connected to the mounting seat through a third elastic member, and the back-stop head is plugged into the hole of the material strip.

[0015] According to the utility model of the above scheme, a second stop surface is provided at the end of the stop head, and the second stop surface is inclined so that the height of the side of the stop head close to the lower mold is smaller than the height of the side of the stop head away from the lower mold.

[0016] According to the above-mentioned solution of the utility model, a sliding groove is arranged on the mounting seat, at least a part of the rotating shaft is arranged in the sliding groove, and the groove width of the sliding groove is greater than the diameter of the rotating shaft.

[0017] According to the utility model of the above scheme, a mounting groove is provided on the side of the sliding block away from the transmission component, at least a part of the first elastic member is provided in the mounting groove, one end of the first elastic member is connected to the sliding block, and the other end of the first elastic member is connected to the mounting seat.

[0018] The utility model according to the above scheme has the following beneficial effects:

[0019] In the above-mentioned thin material pulling mechanism, when the upper mold and the lower mold are closed, the insert knife moves downward and contacts with the transmission component, so that the transmission component rotates, and the mounting seat moves in the direction away from the lower mold, so that the feed needle assembly pulls the material belt. That is, the utility model converts the vertical movement of the insert knife into the horizontal movement of the sliding block. Through the guiding effect of the sliding block, the feed needle assembly can be accurately and stably pushed forward, so as to convey the material belt to the working area of ​​the upper mold and the lower mold, so that the material belt is conveyed smoothly, and the material belt is prevented from arching, jamming, etc. during the feeding process, so as to avoid the problem of product instability and affecting product size caused by feeding only by the feeder, thereby improving product quality and production efficiency.

[0020] In addition, when the plunger is pressed down and contacts the transmission component, the transmission component rotates, which can reduce the friction between the plunger and the transmission component, thereby extending the service life of the utility model. In addition, the sliding block is connected to the mounting seat through the first elastic member, so that when the plunger rises, the first elastic member can reset the sliding block, which is convenient for pulling the material strip when the upper mold and the lower mold are closed next time, further improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model when the mold is closed;

[0022] Figure 2 It is a cross-sectional view of the utility model when the mold is closed;

[0023] Figure 3 for Figure 2 A magnified view of part A;

[0024] Figure 4 This is one of the structural schematic diagrams of the utility model when the mold is opened;

[0025] Figure 5 for Figure 4 A magnified view of part B;

[0026] Figure 6 This is the second structural schematic diagram of the utility model when the mold is opened;

[0027] Figure 7 This is one of the cross-sectional views of the utility model when the mold is opened;

[0028] Figure 8 for Figure 7 Enlarged view of part C;

[0029] Fig. 9 This is the second cross-sectional view of the utility model when the mold is opened;

[0030] Fig.10 This is a disassembled diagram of the utility model when the mold is opened.

[0031] In the figure, 1, upper mold; 2, lower mold; 3, insert knife; 31, guide slope; 4, pulling assembly; 41, mounting seat; 411, sliding groove; 42, sliding block; 43, first elastic member; 44, feed needle assembly; 441, feed head; 4411, first anti-retraction surface; 442, feed head mounting block; 443, second elastic member; 45, anti-retraction needle assembly; 451, anti-retraction head; 4511, second anti-retraction surface; 452, third elastic member; 5, transmission component; 51, retaining ring; 52, gasket; 6, rotating shaft; 7, material belt. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] like Figure 1 As shown, the utility model provides a thin material pulling mechanism, including a plunger 3 arranged on an upper mold 1, a pulling assembly 4 arranged on a lower mold 2, a feeder arranged in front of the lower mold 2 (on the left), and a thin material pulling mechanism arranged behind the lower mold 2 (on the right). When the upper mold 1 and the lower mold 2 are closed, the plunger 3 pushes the pulling assembly 4 to move in a direction away from the lower mold 2 to pull the material strip 7 to the working area of ​​the upper mold 1 and the lower mold 2.

[0034] like Figures 2 to 5 As shown, in this embodiment, the material pulling assembly 4 includes a mounting seat 41, a sliding block 42 is arranged inside the mounting seat 41, and the sliding block 42 is connected to the mounting seat 41 through a first elastic member 43, so that when the inserting knife 3 rises, the first elastic member 43 can reset the sliding block 42, so as to facilitate the pulling of the material strip 7 when the upper mold 1 and the lower mold 2 are closed next time, thereby improving production efficiency. In addition, a transmission component 5 is arranged on the outer side of the mounting seat 41, and the transmission component 5 is connected to the sliding block 42 through a rotating shaft 6, so that the transmission component 5 rotates around the rotating shaft 6. When the inserting knife 3 is pressed down and contacts the transmission component 5, the transmission component 5 rotates, which can not only complete the transmission of force, but also reduce the friction between the inserting knife 3 and the transmission component 5, thereby reducing wear and extending the service life of the entire mechanism.

[0035] like Figures 6 to 9As shown, in this embodiment, a mounting groove is provided on the side of the sliding block 42 away from the transmission component 5, at least a part of the first elastic member 43 is provided in the mounting groove, and one end of the first elastic member 43 is connected to the sliding block 42, and the other end of the first elastic member 43 is connected to the mounting seat 41. When the inserting knife 3 moves downward to push the transmission component 5, thereby driving the rotating shaft 6 and the sliding block 42 to move to the right, the first elastic member 43 is compressed, thereby generating a deformation, and then pulling the material belt 7; when the inserting knife 3 moves upward, the inserting knife 3 does not contact the transmission component 5, and the first elastic member 43 restores the deformation, thereby pushing the sliding block 42 to move to the left. In addition, the first elastic member 43 can be designed as a spring. Of course, in actual design, the structure of the first elastic member 43 can be designed according to actual needs.

[0036] like Figures 2 to 9 As shown, in this embodiment, a feeding needle assembly 44 is provided on the sliding block 42. When the upper mold 1 and the lower mold 2 are closed, the inserting knife 3 moves downward and contacts the transmission component 5, so that the transmission component 5 rotates, and the sliding block 42 moves in a direction away from the lower mold 2, so that the feeding needle assembly 44 pulls the material belt 7. The utility model converts the vertical movement of the inserting knife 3 into the horizontal movement of the sliding block 42. Through the guiding effect of the sliding block 42, the feeding needle assembly 44 can be accurately and stably pushed forward, so as to convey the material belt 7 to the working area of ​​the upper mold 1 and the lower mold 2, so that the material belt 7 is conveyed smoothly, and the material belt 7 is prevented from being arched or stuck during the feeding process, so as to avoid the problem of unstable products and affecting product size caused by feeding only by the feeder, thereby improving product quality and production efficiency.

[0037] like Figure 6 , Fig.10 As shown, in this embodiment, a guide slope 31 is provided on the side of the insert knife 3 close to the transmission component 5, so that when the upper mold 1 and the lower mold 2 are closed, the insert knife 3 can quickly contact the transmission component 5. The guide slope 31 serves as a transition surface, which can guide the insert knife 3 to slide smoothly into the engagement position of the transmission component 5 along a predetermined trajectory, ensuring the accuracy and stability of the contact, thereby effectively improving the overall work efficiency. At the same time, the guide slope 31 disperses the originally concentrated collision force and converts it into a smooth sliding friction force through its gradually changing inclination angle, which can reduce the collision between the insert knife 3 and the transmission component 5, prevent the insert knife 3 and the transmission component 5 from being damaged, extend the service life of the insert knife 3 and the transmission component 5, and reduce the maintenance cost. In addition, the width of the insert knife 3 is one step, so that each time the mold is closed, the material pulling component 4 pulls the material belt 7 to move one step. In addition, two inserting knives 3 can be designed, and the two inserting knives 3 are symmetrically arranged on both sides of the mounting seat 41. Two transmission components 5 are correspondingly arranged on the mounting seat 41. The two transmission components 5 are connected by a rotating shaft 6, which can enhance the stability of the pulling component 4 on the material belt 7.

[0038] like Figure 4 , Figure 5 , Fig.10 As shown, in this embodiment, the transmission component 5 includes a snap ring 51 and a washer 52, and the snap ring 51 and the washer 52 are both sleeved on the rotating shaft 6, and the snap ring 51 is located on the outside of the washer 52, which is convenient for subsequent replacement and maintenance, and the setting of the washer 52 can further reduce the friction between the inserting knife 3 and the transmission component 5. In addition, a limiting groove is provided on the rotating shaft 6, and the snap ring 51 is set in the limiting groove to limit the washer 52 on the rotating shaft 6. When the upper mold 1 and the lower mold 2 are closed, the inserting knife 3 moves downward, and the inserting knife 3 moves away from the lower mold 2 by pushing the washer 52, thereby driving the rotating shaft 6, the sliding block 42 and the feeding needle assembly 44 to move away from the lower mold 2, and then pulling the material belt 7 by a step distance.

[0039] like Figure 3 , Figure 5 , Figure 8 , Fig.10 As shown, in this embodiment, a sliding groove 411 is provided on the mounting seat 41, at least a part of the rotating shaft 6 is provided in the sliding groove 411, one end of the rotating shaft 6 is connected to the snap ring 51 and the washer 52, and one end of the rotating shaft 6 is connected to the sliding block 42, so that the sliding block 42 and the transmission component 5 move synchronously, thereby realizing the synchronous transmission of force and the precise execution of the action. In addition, the groove width of the sliding groove 411 is greater than the diameter of the rotating shaft 6, and the sliding groove 411 can provide a moving space for the rotating shaft 6, so that the pulling component 4 pulls the material belt 7 to move a step distance.

[0040] like Figure 3 , Figure 5 , Figure 8 , Fig.10 As shown, in this embodiment, the feed needle assembly 44 includes a feed head 441 and a feed head 441 mounting block. The feed head 441 mounting block is arranged below the feed head 441. The feed head 441 is connected to the feed head 441 mounting block through a second elastic member 443. The feed head 441 is plugged into the hole of the material belt 7. When the upper mold 1 and the lower mold 2 are in the process of closing the mold, the inserting knife 3 moves downward, and the transmission member 5 pushes the rotating shaft 6 and the slider to move to the side away from the lower mold 2, so that the feed head 441 drives the material belt 7 to move a step distance. In addition, the feed head 441 is connected to the feed head 441 mounting block through a second elastic member 443. The second elastic member 443 makes the feed head 441 pull the material belt 7 more stably, so that the feed head 441 is always plugged into the hole of the material belt 7, thereby improving the stability of the assembly. In addition, the second elastic member 443 may be designed as a spring. Of course, in actual design, the structure of the second elastic member 443 may be designed according to actual needs.

[0041] like Figure 3 , Figure 5 , Figure 8 , Fig.10 As shown, in this embodiment, the end of the feed head 441 is provided with a first stop face 4411, and the first stop face 4411 is tilted so that the height of the side of the feed head 441 close to the lower mold 2 is less than the height of the side of the feed head 441 away from the lower mold 2, that is, the first stop face 4411 is tilted from right to left, so that the tilt direction of the first stop face 4411 forms a certain angle with the running direction of the material belt 7, so that the material belt 7 can only move in one direction. When the sliding block 42 moves to the left to reset under the push of the first elastic member 43, the feed head 441 is plugged into another hole of the material belt 7 to prepare for the next mold closing.

[0042] like Figure 3 , Figure 5 , Figure 8 , Fig.10 As shown, in this embodiment, the feed needle assembly 44 can be designed as two groups, and the two groups of feed needle assemblies 44 are symmetrically arranged on both sides of the material belt 7, and the two feed heads 441 are connected to the feed head 441 mounting block through the corresponding second elastic member 443, so as to further improve the stability of the movement of the material belt 7. Of course, in actual design, the number of feed heads 441 can be designed according to actual needs.

[0043] like Figure 3 , Figure 5 , Figure 8 , Fig.10 As shown, in this embodiment, a back-stopping needle assembly 45 is also provided in the mounting seat 41. The back-stopping needle assembly 45 is provided on the side of the feed needle assembly 44 close to the lower mold 2. The back-stopping needle assembly 45 includes a back-stopping head 451. The back-stopping head 451 is connected to the mounting seat 41 through a third elastic member 452, and the back-stopping head 451 is plugged into the hole of the material belt 7. The third elastic member 452 makes the back-stopping of the material belt 7 by the back-stopping head 451 more stable, so that the feed head 441 is always plugged into the hole of the material belt 7, thereby improving the stability of the assembly. In addition, the third elastic member 452 can be designed as a spring. Of course, in actual design, the structure of the third elastic member 452 can be designed according to actual needs.

[0044] In this embodiment, a second stop surface 4511 is provided at the end of the stop head 451, and the second stop surface 4511 is tilted so that the height of the side of the stop head 451 close to the lower mold 2 is less than the height of the side of the stop head 451 away from the lower mold 2, that is, the second stop surface 4511 is tilted from right to left, so that the tilt direction of the second stop surface 4511 forms a certain angle with the running direction of the material belt 7, so that the material belt 7 can only move in one direction. When the sliding block 42 moves to the left to reset under the push of the first elastic member 43, the second stop surface 4511 can prevent the material belt 7 from following and retreating, which can ensure that the material belt 7 remains stationary during this process, and prevents affecting the production of the material belt 7 in the working area of ​​the upper mold 1 and the lower mold 2.

[0045] When the utility model is in use, the feeder conveys the material strip 7 to between the upper mold 1 and the lower mold 2, and makes the feed needle assembly 44 and the anti-retraction needle assembly 45 plug into the hole position of the material strip 7, then the upper mold 1 and the lower mold 2 are closed, the inserting knife 3 moves downward, and the inserting knife 3 pushes the rotating shaft 6, the sliding block 42, and the feed needle assembly 44 to move away from the lower mold 2 through the transmission component 5, so that the feed needle assembly 44 pulls the material strip 7 by a step distance; after the material strip 7 located in the working area of ​​the upper mold 1 and the lower mold 2 is processed, the upper mold 1 and the lower mold 2 are opened, the inserting knife 3 moves upward, and the sliding block 42 moves to the left to reset under the push of the first elastic member 43, and the feed needle assembly 44 is plugged into another hole position of the material strip 7, and at the same time, the anti-retraction needle assembly 45 is plugged into the hole position of the material strip 7 to prevent the material strip 7 from following and retreating. There is a feeder in front of the mold (on the left side) to feed the material, and a pulling mechanism behind the mold (on the right side) to pull the material strip 7, which can ensure the stability of the material strip 7 and provide support for it. It can prevent the material strip 7 from arching or getting stuck during the feeding process due to the material strip 7 being too thin or having poor rigidity, so that the material strip 7 can be produced smoothly and the production efficiency can be improved.

[0046] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0047] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A thin material pulling mechanism, characterized in that: The invention comprises a plunger arranged on the upper die and a material drawing assembly arranged on the lower die, wherein the material drawing assembly comprises a mounting seat, a sliding block is arranged inside the mounting seat, the sliding block is connected to the mounting seat through a first elastic member, a transmission component is arranged outside the mounting seat, and the transmission component is connected to the sliding block through a rotating shaft so that the transmission component rotates around the rotating shaft; A feed needle assembly is provided on the sliding block. When the upper mold and the lower mold are closed, the insert knife moves downward and contacts the transmission component to rotate the transmission component, and the sliding block moves away from the lower mold so that the feed needle assembly pulls the material strip.

2. The thin material pulling mechanism according to claim 1, characterized in that: The transmission component comprises a snap ring and a washer, both of which are sleeved on the rotating shaft, and the snap ring is located on the outside of the washer.

3. The thin material pulling mechanism according to claim 1, characterized in that: A guiding inclined surface is arranged on one side of the inserting knife close to the transmission component.

4. The thin material pulling mechanism according to claim 1, characterized in that: The feed needle assembly includes a feed head and a feed head mounting block. The feed head mounting block is arranged below the feed head. The feed head is connected to the feed head mounting block via a second elastic member. The feed head is plugged into a hole of the material belt.

5. The thin material pulling mechanism according to claim 4, characterized in that: A first stop surface is arranged at the end of the feeding head, and the first stop surface is arranged obliquely so that the height of the side of the feeding head close to the lower mold is smaller than the height of the side of the feeding head away from the lower mold.

6. The thin material pulling mechanism according to claim 4, characterized in that: The feed needle assemblies are divided into two groups, and the two groups of feed needle assemblies are symmetrically arranged on both sides of the material belt.

7. The thin material pulling mechanism according to claim 1, characterized in that: A back-stop needle assembly is also provided in the mounting seat. The back-stop needle assembly is arranged on a side of the feeding needle assembly close to the lower mold. The back-stop needle assembly includes a back-stop head. The back-stop head is connected to the mounting seat through a third elastic member, and the back-stop head is plugged into the hole of the material strip.

8. The thin material pulling mechanism according to claim 7, characterized in that: A second stop surface is disposed at the end of the stop head, and the second stop surface is inclined so that a height of the stop head close to the lower die is smaller than a height of the stop head away from the lower die.

9. The thin material pulling mechanism according to claim 1, characterized in that: The mounting seat is provided with a sliding groove, at least a part of the rotating shaft is arranged in the sliding groove, and the groove width of the sliding groove is greater than the diameter of the rotating shaft.

10. The thin material pulling mechanism according to claim 1, characterized in that: A mounting groove is provided on one side of the sliding block away from the transmission component, at least a portion of the first elastic member is provided in the mounting groove, one end of the first elastic member is connected to the sliding block, and the other end of the first elastic member is connected to the mounting seat.

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