A pre-drilling die for a seat back frame

Abstract

This utility model discloses a pre-punching mold for a seat back frame, relating to the field of molds. It includes an upper mold base, a lower mold base, and a seat back frame. The seat back frame has two first punches on its top and two second punches on its side walls. The upper mold base has a mounting base on its top, and a first upper mold and a second upper mold are fixedly mounted on the bottom of the mounting base. The lower mold base has a first lower mold and a second lower mold fixedly mounted on its top. Each of the first and second upper and lower molds has a corresponding limiting groove on one side. Two sets of punches, each set consisting of two punches, are fixedly connected to the bottom of the upper mold base. This utility model allows for punching of the top and side walls of the seat back frame by placing the seat back frame flat in the first lower mold and vertically in the limiting grooves of the second lower mold, respectively. The upper mold base moves downwards to drive the punches, simplifying operation and improving punching efficiency.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a pre-hole punching mold for a seat back frame. Background Technology

[0002] In the seat production process, punching holes in the seat back frame is a critical step. The quality and positional accuracy of the pre-holes directly affect subsequent assembly processes. Currently, the molds used for punching pre-holes in the seat back frame have some shortcomings. Traditional molds can often only punch holes in a single part of the seat back frame. When it is necessary to punch holes in different parts such as the top and side walls, different molds need to be changed, which is cumbersome and not only increases the labor intensity of workers but also reduces production efficiency.

[0003] Therefore, it is necessary to invent a pre-hole punching mold for seat back frames to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a pre-hole punching mold for a seat back frame to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-punching mold for a seat back frame, comprising an upper mold base, a lower mold base, and a seat back frame. The seat back frame has two first punch holes on its top and two second punch holes on its sidewalls. The upper mold base has a mounting base on its top, and a first upper mold and a second upper mold are fixedly mounted on the bottom of the mounting base. The lower mold base has a first lower mold and a second lower mold fixedly mounted on its top. Each of the first upper mold, the first lower mold, the second upper mold, and the second lower mold has a limiting groove corresponding to the seat back frame on one side opposite to each other. The bottom of the upper mold base is fixedly connected to two sets of punches, each set consisting of two punches. The bottom of both the first upper mold and the second upper mold has through holes corresponding to the punches. The top of the limiting groove has a downward-facing hole corresponding to the punch.

[0006] Preferably, a support plate is fixedly connected to the bottom of the lower mold base, and two first support seats are fixedly connected to the top of the support plate. Each of the two first support seats has a first slot corresponding to the seat back frame.

[0007] Preferably, the lower mold base has a slot on its front side, and a fixing plate is fixedly connected inside the slot. A second support base is fixedly connected to the front side of the fixing plate, and a second slot corresponding to the seat back frame is provided inside the second support base.

[0008] Preferably, a support rod is rotatably provided in both the first and second card slots.

[0009] Preferably, the top of the lower mold base is fixedly connected to two symmetrically distributed limiting cylinders, and a limiting rod is slidably arranged inside the limiting cylinder. The bottom of the upper mold base and the mounting base are both provided with through holes corresponding to the limiting rods, and the upper mold base and the mounting base are both fixedly connected to the limiting rods.

[0010] Preferably, the first lower mold is located between the two limiting cylinders, and the second lower mold is located in front of the first lower mold.

[0011] The technical effects and advantages of this utility model are as follows: By setting a first upper mold, a first lower mold, a second upper mold, and a second lower mold, and opening limiting grooves on the corresponding molds to match the seat back frame, when it is necessary to punch a hole in the top of the seat back frame, the seat back frame is laid flat and locked in the limiting groove of the first lower mold. The upper mold base moves downward, and the punch passes through the through hole of the first upper mold and the downward hole at the top of the limiting groove to complete the first punching process. When it is necessary to punch a hole in the side wall of the seat back frame, the seat back frame is laid vertically and locked in the limiting groove of the second lower mold. The upper mold base moves downward, and the punch passes through the through hole of the second upper mold and the downward hole at the top of the corresponding limiting groove to complete the second punching process. There is no need to change the mold, the operation is simple and convenient, and the punching efficiency is greatly improved. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the lower mold base of this utility model;

[0014] Figure 3 This is a schematic diagram of the upper mold base of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the seat back frame of this utility model.

[0016] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Seat back frame; 4. First punch; 5. Second punch; 6. Mounting base; 7. First upper mold; 8. Second upper mold; 9. First lower mold; 10. Second lower mold; 11. Limiting groove; 12. Punch; 13. Downward hole; 14. Support plate; 15. First support seat; 16. First slot; 17. Fixing plate; 18. Second support seat; 19. Second slot; 20. Support rod; 21. Limiting cylinder; 22. Limiting rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figure 1-4 The illustrated seat back frame punching mold includes an upper mold base 1, a lower mold base 2, and a seat back frame 3. The seat back frame 3 has two first punch holes 4 on its top and two second punch holes 5 on its side walls. The upper mold base 1 has a mounting base 6 on its top, and a first upper mold 7 and a second upper mold 8 are fixedly mounted on the bottom of the mounting base 6. The lower mold base 2 has a first lower mold 9 and a second lower mold 10 fixedly mounted on its top. Each of the first upper mold 7, the first lower mold 9, the second upper mold 8, and the second lower mold 10 has a limiting groove 11 corresponding to the seat back frame 3 on its opposite side. Two sets of punches 12 are fixedly connected to the bottom of the upper mold base 1. The set includes two punches 12. The bottom of the first upper mold 7 and the second upper mold 8 are provided with through holes corresponding to the punches 12. The top of the limiting groove 11 is provided with a downward hole 13 corresponding to the punches 12. By placing the seat back frame 3 flat and making it fit into the limiting groove 11 at the top of the first lower mold 9, the upper mold base 1 moves downward, and the punches 12 can be used to make holes in the top of the seat back frame 3, thereby forming the first punch 4. By placing the seat back frame 3 vertically and making it fit into the limiting groove 11 at the top of the second lower mold 10, the upper mold base 1 moves downward, and the punches 12 can be used to make holes in the side wall of the seat back frame 3, thereby forming the second punch 5.

[0019] The bottom of the lower mold base 2 is fixedly connected to a support plate 14, and the top of the support plate 14 is fixedly connected to two first support seats 15. The top of each of the two first support seats 15 is provided with a first slot 16 corresponding to the seat back frame 3. The first support seats 15 can provide auxiliary support for the flat seat back frame 3 and improve its stability.

[0020] The lower mold base 2 has a slot on its front side, and a fixing plate 17 is fixedly connected inside the slot. A second support base 18 is fixedly connected to the front side of the fixing plate 17. A second slot 19 corresponding to the seat back frame 3 is opened inside the second support base 18. The second support base 18 can provide auxiliary support for the vertically placed seat back frame 3.

[0021] A support rod 20 is rotatably provided in both the first slot 16 and the second slot 19. The support rod 20 in the first slot 16 and the second slot 19 can reduce the friction between the seat back frame 3 and the support seat, making it easier to place and remove the seat back frame 3.

[0022] The top of the lower die base 2 is fixedly connected to two symmetrically distributed limiting cylinders 21. A limiting rod 22 is slidably arranged inside the limiting cylinder 21. The bottom of the upper die base 1 and the mounting base 6 are both provided with through holes corresponding to the limiting rod 22. The upper die base 1 and the mounting base 6 are both fixedly connected to the limiting rod 22. The setting of the limiting cylinder 21 and the limiting rod 22 can ensure the stability of the upper die base 1 during the downward process and improve the punching accuracy.

[0023] The first lower mold 9 is located between the two limiting cylinders 21, and the second lower mold 10 is located in front of the first lower mold 9.

[0024] The working principle of this utility model is as follows: When it is necessary to punch a hole in the top of the seat back frame 3, the seat back frame 3 is laid flat and locked in the limiting groove 11 at the top of the first lower mold 9. At the same time, the bottom of the seat back frame 3 is also locked in the first slot 16 of the first support seat 15. The drive device is started to drive the upper mold seat 1 to move downward. The upper mold seat 1 drives the punch 12 to move downward. The punch 12 passes through the through hole of the first upper mold 7 and the downward hole 13 at the top of the limiting groove 11 of the first lower mold 9 to punch a hole in the top of the seat back frame 3, forming a first punch 4. When it is necessary to punch a hole in the side wall of the seat back frame 3, the seat back frame 3 is laid vertically and locked in the limiting groove 11 at the top of the second lower mold 10. At the same time, one side of the seat back frame 3 is locked in the second slot 19 of the second support seat 18. The drive device is started to drive the upper mold seat 1 to move downward. The punch 12 passes through the through hole of the second upper mold 8 and the downward hole 13 at the top of the limiting groove 11 of the second lower mold 10 to punch a hole in the side wall of the seat back frame 3, forming a second punch 5.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seat back frame pre-punching die, comprising an upper die seat, a lower die seat and a seat back frame, the seat back frame is provided with two first punching holes at the top, and the sidewall of the seat back frame is provided with two second punching holes, characterized in that: The top of the upper mold base is provided with a mounting base, and the bottom of the mounting base is fixedly installed with a first upper mold and a second upper mold. The top of the lower mold base is fixedly installed with a first lower mold and a second lower mold. The first upper mold, the first lower mold, the second upper mold, and the second lower mold are all provided with limiting grooves corresponding to the seat back frame on opposite sides. The bottom of the upper mold base is fixedly connected with two sets of punches, and each set of punches consists of two punches. The bottom of the first upper mold and the second upper mold are provided with through holes corresponding to the punches. The top of the limiting groove is provided with a downward hole corresponding to the punches.

2. A pre-punch die for a seat back frame according to claim 1, wherein: The bottom of the lower mold base is fixedly connected to a support plate, and the top of the support plate is fixedly connected to two first support seats. The top of each of the two first support seats is provided with a first slot corresponding to the seat back frame.

3. A pre-punch die for a seat back frame according to claim 2, wherein: The lower mold base has a slot on its front side, and a fixing plate is fixedly connected inside the slot. A second support base is fixedly connected to the front side of the fixing plate, and a second slot corresponding to the seat back frame is provided inside the second support base.

4. A pre-drilling die for a seat back frame according to claim 3, characterized in that: Both the first and second card slots are rotatably equipped with support rods.

5. A pre-drilling die for a seat back frame according to claim 4, characterized in that: The top of the lower mold base is fixedly connected to two symmetrically distributed limiting cylinders. A limiting rod is slidably arranged inside the limiting cylinder. The bottom of the upper mold base and the mounting base are both provided with through holes corresponding to the limiting rods. The upper mold base and the mounting base are both fixedly connected to the limiting rods.

6. A pre-drilling die for a seat back frame according to claim 5, characterized in that: The first lower mold is located between two limiting cylinders, and the second lower mold is located in front of the first lower mold.

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