Sealing strip notch punching die

Abstract

The utility model belongs to the technical field of sealing strip notch punching, and particularly relates to a sealing strip notch punching die which comprises a base, a lower die is installed on the base, a pressing plate is rotatably installed on the inner wall of a plate groove through a rotating shaft, two rubber pads are installed on the side wall of the pressing plate, a containing groove is formed in the side wall of the plate groove, and the lower die is installed on the base. A first spring is installed on the inner wall of the containing groove, the other end of the first spring is fixedly connected with a pressing plate, and a second spring is installed between the side wall of the limiting block and the inner wall of the assembling groove. The limiting block limits the pressing plate, the pressing plate and the two rubber pads press and fix the two ends of the cutting position of the sealing strip, accurate positioning of the sealing strip is achieved, displacement of the sealing strip in the punching process is avoided, the stability of the sealing strip is improved, and the punching accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing strip notch punching, in particular to a sealing strip notch punching die. Background Art

[0002] Sealing strips are important automotive components, mainly used in doors, bodies, sunroofs, trunks, etc. They have sealing functions such as sound insulation, dustproof, windproof, and waterproof. In the production process of sealing strips, a punching die is required to cut a flat notch at the end of the sealing strip.

[0003] A Chinese patent with the authorization announcement number CN 114789483 B discloses a device for punching automobile sealing strips, comprising: a drive unit; a first clamping mechanism; a tool having a stepped hole therein, the tool being fixedly mounted on the drive end of the drive unit and sealing the stepped hole, the drive unit driving the tool to move toward or away from the sealing strip so as to move the tool between a feed position and a retracted position; a material ejector rod having a piston at one end and a free end at the other end, the piston being sealingly and slidingly connected within the stepped hole; and a pneumatic joint fixedly mounted on the drive end of the drive unit or the tool, the pneumatic joint being connected to the stepped hole and being used to connect to an external air source to drive the material ejector rod so that the free end pushes the waste sealing strip at the feed position. The present invention provides a device for punching automobile sealing strips, wherein a pneumatically driven material ejector rod is added to the tool. The material ejector rod is used to push waste sealing strips adhering to the tool, eliminating the need for manual removal of the waste, thereby improving production efficiency.

[0004] In the process of punching notches in sealing strips, the existing punching die cannot accurately position the sealing strips. The sealing strips have a certain degree of softness, and the sealing strips are prone to deformation and displacement during the punching process, resulting in poor stability of the sealing strips and affecting the accuracy of punching. Therefore, a sealing strip notch punching die is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a sealing strip notch punching die.

[0006] The utility model solves the technical problem adopted by the technology of a sealing strip notch punching mold, comprising a base, a lower mold is installed on the base, two groups of mounting grooves are symmetrically opened on the lower mold, a mounting plate is assembled in the mounting groove, a knife groove is opened on the mounting plate, a plate groove is symmetrically opened on the mounting plate, a pressure plate is rotatably installed on the inner wall of the plate groove through a rotating shaft, two rubber pads are installed on the side wall of the pressure plate, a placement groove is opened on the side wall of the plate groove, a first spring is installed on the inner wall of the placement groove, the other end of the first spring is fixedly connected to the pressure plate, an assembly groove is opened inside the mounting plate, a limiting block is placed in the assembly groove, a second spring is installed between the side wall of the limiting block and the inner wall of the assembly groove, the assembly A guide rod is rotatably installed on the inner wall of the groove, and a connecting rope is installed on the side wall of the limit block. The other end of the connecting rope is connected to a lifting plate, and the lifting plate is assembled in the assembly groove. A lifting block is installed on the top side of the lifting plate. Two groups of mounting plates are provided on the lower mold, and a mold cavity is opened in the mounting plate. The two groups of mounting plates are symmetrically arranged. By placing the sealing strip in the mold cavity of the mounting plate, the position where the sealing strip needs to be cut is aligned with the knife groove, and then the pressure plate is pressed downward. The limiting block limits the pressure plate, and the pressure plate and two rubber pads press and fix the two ends of the cutting position of the sealing strip, thereby realizing precise positioning of the sealing strip and avoiding displacement of the sealing strip during the punching process, which is beneficial to improving the stability of the sealing strip and the accuracy of punching.

[0007] Preferably, a support rod is installed on the base, a fixed plate is installed on the top side of the support rod, a hydraulic cylinder is installed on the fixed plate, a hydraulic rod is installed on the hydraulic cylinder, a guide plate is installed on the bottom side of the hydraulic rod, a guide hole is opened on the guide plate, and the guide plate is slidably sleeved on the outer periphery of the support rod, and an upper mold is installed on the bottom side of the guide plate, and two groups of punching knives are symmetrically installed on the bottom side of the upper mold. By placing the two groups of sealing strips in the mold cavities of the two groups of mounting plates respectively, the positions of the sealing strips to be cut are aligned with the knife grooves, and after the pressure plate presses and fixes the sealing strips, the hydraulic rod drives the upper mold to move vertically downward, and the upper mold drives the two groups of punching knives to move vertically downward, and the two groups of punching knives perform notches on the two groups of sealing strips at the same time, which is beneficial to improving the punching efficiency of the sealing strips.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model places the sealing strip in the mold cavity of the mounting plate, aligns the position where the sealing strip needs to be cut with the knife groove, and then presses the pressing plate downward. The limit block limits the pressing plate, and the pressing plate and two rubber pads press and fix the two ends of the cutting position of the sealing strip, thereby achieving precise positioning of the sealing strip and avoiding displacement of the sealing strip during the punching process, which is beneficial to improving the stability of the sealing strip and the accuracy of punching.

[0010] 2. The utility model places two groups of sealing strips in the mold cavities of two groups of mounting plates respectively, aligns the position of the sealing strip to be cut with the knife groove, and after the pressing plate presses and fixes the sealing strip, the hydraulic rod drives the upper mold to move vertically downward, and the upper mold drives the two groups of punching knives to move vertically downward. The two groups of punching knives perform notches on the two groups of sealing strips at the same time, which is beneficial to improving the punching efficiency of the sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of a first-person perspective three-dimensional structure;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting plate;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressure plate;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure at the limit block;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper mold.

[0017] In the figure: 1. Base; 2. Lower mold; 3. Mounting groove; 4. Mounting plate; 5. Mold cavity; 6. Knife groove; 7. Plate groove; 8. Pressing plate; 9. Rubber pad; 10. Placement groove; 11. First spring; 13. Assembly groove; 14. Limit block; 15. Second spring; 16. Guide rod; 17. Connecting rope; 18. Lifting plate; 19. Lifting block; 20. Support rod; 21. Fixed plate; 22. Hydraulic cylinder; 23. Hydraulic rod; 24. Guide plate; 25. Upper mold; 26. Punching knife. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-4As shown, a sealing strip notch punching die includes a base 1, a lower die 2 is mounted on the base 1, two sets of mounting grooves 3 are symmetrically opened on the lower die 2, a mounting plate 4 is assembled in the mounting groove 3, a knife groove 6 is opened on the mounting plate 4, a plate groove 7 is symmetrically opened on the mounting plate 4, a pressure plate 8 is mounted on the inner wall of the plate groove 7 through a rotating shaft, two rubber pads 9 are installed on the side wall of the pressure plate 8, a placement groove 10 is opened on the side wall of the plate groove 7, a first spring 11 is installed on the inner wall of the placement groove 10, the other end of the first spring 11 is fixedly connected to the pressure plate 8, and a The assembly groove 13 has a limit block 14 placed in it. A second spring 15 is installed between the side wall of the limit block 14 and the inner wall of the assembly groove 13. A guide rod 16 is rotatably installed on the inner wall of the assembly groove 13. A connecting rope 17 is installed on the side wall of the limit block 14. The other end of the connecting rope 17 is connected to a lifting plate 18. The lifting plate 18 is assembled in the assembly groove 13. A lifting block 19 is installed on the top side of the lifting plate 18. During operation, the existing punching die cannot accurately position the sealing strip during the process of punching the notch of the sealing strip, so the sealing strip has a certain degree of softness. During the punching process, the sealing strip is prone to deformation and displacement, resulting in poor stability of the sealing strip and affecting the accuracy of punching. By placing the sealing strip in the mold cavity 5 of the mounting plate 4, aligning the position of the sealing strip to be cut with the knife groove 6, and then pressing the pressure plate 8 downward, the pressure plate 8 first contacts the limit block 14 during the downward movement, and the pressure plate 8 pushes the limit block 14 to move horizontally along the inclined surface of the limit block 14. The limit block 14 moves into the assembly groove 13 and presses the second spring 15. Then the pressure plate 8 moves to the bottom of the limit block 14. At this time, the second spring 15 Under the action of the second spring 15, the limit block 14 is pushed outward horizontally, and the inclined end of the limit block 14 extends out of the assembly slot 13. At this time, the limit block 14 is located above the pressure plate 8, limiting the pressure plate 8. At this time, the pressure plate 8 is located above the sealing strip, and the two rubber pads 9 on the bottom side of the pressure plate 8 press the sealing strip. The two rubber pads 9 are symmetrically arranged on both sides of the knife groove 6. In the process of punching the sealing strip, the pressure plate 8 and the two rubber pads 9 press and fix the two ends of the cutting part of the sealing strip, thereby achieving precise positioning of the sealing strip and stable placement of the sealing strip.

[0020] After the punching is completed, quickly release the hand after pressing the pressure plate 8 downward. During this process, the pressure plate 8 presses the lifting block 19 downward, and the lifting block 19 moves vertically downward. The lifting block 19 pushes the lifting plate 18 to move vertically downward, and the lifting plate 18 pulls the connecting rope 17 to move downward. The other end of the connecting rope 17 pulls the limit block 14 to move horizontally back into the assembly groove 13. Under the action of the first spring 11, the first spring 11 pulls the lifting plate 18 to flip nearly 90°, thereby unlocking the pressure plate 8. Under the action of the second spring 15, the second spring 15 pushes the limit block 14 back to move horizontally outward, so that the limit block 14 returns to its original position. This structure presses the sealing strip through the pressure plate 8, thereby avoiding the displacement of the sealing strip during the punching process, which is beneficial to improving the stability of the sealing strip and the accuracy of punching.

[0021] See also Figure 5 As shown, the lower mold 2 is provided with two groups of mounting plates 4, a mold cavity 5 is opened in the mounting plate 4, the two groups of mounting plates 4 are symmetrically arranged, a support rod 20 is installed on the base 1, a fixing plate 21 is installed on the top side of the support rod 20, a hydraulic cylinder 22 is installed on the fixing plate 21, a hydraulic rod 23 is installed on the hydraulic cylinder 22, a guide plate 24 is installed on the bottom side of the hydraulic rod 23, a guide hole is opened on the guide plate 24, the guide plate 24 is slidably sleeved on the periphery of the support rod 20, an upper mold 25 is installed on the bottom side of the guide plate 24, and two groups of punching knives 26 are symmetrically installed on the bottom side of the upper mold 25; when working, the existing punching mold punches the sealing strip During the cutting process, a single mold cavity 5 structure is usually set up, and only one group of sealing strips can be punched, resulting in low punching efficiency. By placing the two groups of sealing strips in the mold cavities 5 of the two groups of mounting plates 4 respectively, the sealing strips are aligned with the knife groove 6 at the cutting position, and the pressing plate 8 presses and fixes the sealing strips, the hydraulic cylinder 22 is operated, and the hydraulic rod 23 drives the guide plate 24 to move vertically downward. The guide plate 24 drives the upper mold 25 to move vertically downward. The upper mold 25 drives the two groups of punching knives 26 to move vertically downward. The two groups of punching knives 26 perform notches on the two groups of sealing strips at the same time, which is beneficial to improving the punching efficiency of the sealing strips.

[0022] Working principle: in the process of punching the notch of the sealing strip by the existing punching die, the sealing strip cannot be accurately positioned, and the sealing strip has a certain degree of softness. During the punching process, the sealing strip is easily deformed and displaced, resulting in poor stability of the sealing strip, which affects the accuracy of punching. By placing the sealing strip in the mold cavity 5 of the mounting plate 4, aligning the cutting position of the sealing strip to be cut with the knife groove 6, and then pressing the pressure plate 8 downward, the pressure plate 8 first contacts the limit block 14 during the downward movement, and the pressure plate 8 pushes the limit block 14 to move horizontally along the inclined surface of the limit block 14. The limit block 14 moves into the assembly groove 13 and presses the second spring 15. Then the pressure plate 8 moves to the limit block 1 4, at this time, under the action of the second spring 15, the second spring 15 pushes the limit block 14 to move horizontally outward, and the inclined end of the limit block 14 extends out of the assembly slot 13. At this time, the limit block 14 is located above the pressure plate 8, limiting the pressure plate 8. At this time, the pressure plate 8 is located above the sealing strip, and the two rubber pads 9 on the bottom side of the pressure plate 8 press the sealing strip. The two rubber pads 9 are symmetrically arranged on both sides of the knife groove 6. In the process of punching the sealing strip, the pressure plate 8 and the two rubber pads 9 press and fix the two ends of the cutting part of the sealing strip, thereby achieving precise positioning of the sealing strip and stable placement of the sealing strip. After punching is completed, quickly release the pressure plate 8 after pressing it downward. In this process, the pressure The plate 8 presses the lifting block 19 downward, and the lifting block 19 moves vertically downward. The lifting block 19 pushes the lifting plate 18 to move vertically downward. The lifting plate 18 pulls the connecting rope 17 to move downward, and the other end of the connecting rope 17 pulls the limit block 14 to move horizontally back into the assembly groove 13. Under the action of the first spring 11, the first spring 11 pulls the lifting plate 18 to flip nearly 90°, thereby unlocking the pressure plate 8. Under the action of the second spring 15, the second spring 15 pushes the limit block 14 back to move horizontally outward, so that the limit block 14 returns to its original position. This structure presses the sealing strip through the pressure plate 8, avoids the displacement of the sealing strip during the punching process, is beneficial to improve the stability of the sealing strip, and is beneficial to Improve the accuracy of punching; in the process of punching the sealing strips, the existing punching mold usually sets a single mold cavity 5 structure, and can only punch one group of sealing strips, resulting in low punching efficiency. By placing the two groups of sealing strips in the mold cavity 5 of the two groups of mounting plates 4 respectively, aligning the cutting position of the sealing strip with the knife groove 6, and pressing the sealing strip with the pressing plate 8, the hydraulic cylinder 22 is operated, and the hydraulic rod 23 drives the guide plate 24 to move vertically downward, and the guide plate 24 drives the upper mold 25 to move vertically downward, and the upper mold 25 drives the two groups of punching knives 26 to move vertically downward. The two groups of punching knives 26 perform notches on the two groups of sealing strips at the same time, which is beneficial to improve the punching efficiency of the sealing strips.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A sealing strip notch punching die, characterized by: The invention comprises a base (1), a lower mold (2) is installed on the base (1), two groups of mounting grooves (3) are symmetrically provided on the lower mold (2), a mounting plate (4) is installed in the mounting groove (3), a knife groove (6) is provided on the mounting plate (4), a plate groove (7) is symmetrically provided on the mounting plate (4), a pressing plate (8) is rotatably installed on the inner wall of the plate groove (7) via a rotating shaft, two rubber pads (9) are installed on the side wall of the pressing plate (8), and a placement groove (10) is provided on the side wall of the plate groove (7). A first spring (11) is installed on the inner wall of the placement groove (10), and the other end of the first spring (11) is fixedly connected to the pressure plate (8). An assembly groove (13) is provided inside the mounting plate (4), and a limit block (14) is placed in the assembly groove (13). A second spring (15) is installed between the side wall of the limit block (14) and the inner wall of the assembly groove (13). A guide rod (16) is rotatably installed on the inner wall of the assembly groove (13), and a connecting rope (17) is installed on the side wall of the limit block (14).

2. The sealing strip notch punching die according to claim 1, characterized in that: The other end of the connecting rope (17) is connected to a lifting plate (18), the lifting plate (18) is assembled in the assembly groove (13), and a lifting block (19) is installed on the top side of the lifting plate (18).

3. The sealing strip notch punching die according to claim 1, characterized in that: Two groups of mounting plates (4) are provided on the lower mold (2), a mold cavity (5) is opened in the mounting plates (4), and the two groups of mounting plates (4) are symmetrically arranged.

4. The sealing strip notch punching die according to claim 1, characterized in that: A support rod (20) is installed on the base (1), a fixing plate (21) is installed on the top side of the support rod (20), and a hydraulic cylinder (22) is installed on the fixing plate (21).

5. The sealing strip notch punching die according to claim 4, characterized in that: A hydraulic rod (23) is installed on the hydraulic cylinder (22), a guide plate (24) is installed on the bottom side of the hydraulic rod (23), a guide hole is opened on the guide plate (24), and the guide plate (24) is slidably sleeved on the periphery of the support rod (20).

6. The sealing strip notch punching die according to claim 5, characterized in that: An upper mold (25) is installed on the bottom side of the guide plate (24), and two groups of punching knives (26) are symmetrically installed on the bottom side of the upper mold (25).

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