Long-stroke waste core-pulling mechanism for tubular parts

Abstract

A tubular part long-stroke waste core-pulling mechanism is used for machining tubular parts and comprises an upper die (10) and a lower die (20), and the upper die (10) comprises an upper die base (11) and a plurality of punches (12) arranged in the middle of the lower surface of the upper die base (11); the lower die (20) comprises a lower die base (21) and a positioning jig (22) arranged in the middle of the upper surface of the lower die base (21), and the positioning jig (22) is matched with all the punches (12). The two sides of the positioning jig (22) are each provided with a female die rod (23) capable of doing horizontal linear reciprocating motion. Due to the adoption of the structural design, the upper die is provided with the punch, the lower die is provided with the positioning jig and the concave die rods which are arranged on the two sides of the positioning jig and can do horizontal linear reciprocating motion, waste on the pipe wall of the pipe part can be conveniently removed, the production efficiency is greatly improved, and the production cost is reduced. And the higher and higher requirements of modern industry and production on the core-pulling mold are met.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a long-stroke scrap core-pulling mechanism for tubular parts. Background Technology

[0002] In the mold industry, molds are various dies and tools used in injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, and other methods to obtain desired products. In short, a mold is a tool used to create shaped objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the shaping of objects by changing the physical state of the material being molded. It is often referred to as the "mother of industry." Molds are precision tools with complex shapes, bearing the expansion force of the blank. They have high requirements for structural strength, rigidity, surface hardness, surface roughness, and machining accuracy. The level of development in mold production is one of the important indicators of the level of mechanical manufacturing.

[0003] In existing core-pulling dies, after punching holes in the tube wall of tubular parts, the waste material on the tube wall is often difficult to remove, resulting in reduced production efficiency and failing to meet the increasingly higher requirements of modern industry and production for core-pulling dies.

[0004] Therefore, existing technologies need to be improved and enhanced. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a long-stroke waste core-pulling mechanism for tubular parts that is easy to clean and has high production efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A long-stroke waste core-pulling mechanism for processing tubular parts, comprising an upper die and a lower die, for machining tubular parts.

[0008] The upper die includes an upper die base and a plurality of punches disposed in the middle of the lower surface of the upper die base;

[0009] The lower die includes a lower die base and a positioning fixture disposed in the middle of the upper surface of the lower die base. The positioning fixture cooperates with each punch. A die rod capable of horizontal linear reciprocating motion is provided on both sides of the positioning fixture.

[0010] As a further embodiment of this utility model, each of the die rods is provided with a punching waste ejector pin, which is the same number as half of the number of punches and cooperates with the die rod.

[0011] As a further embodiment of this utility model, each of the punches is mounted on a punch holder, and the punch holder is mounted on the upper die holder.

[0012] As a further embodiment of this utility model, it also includes a servo motor, on the output shaft of which a drive wheel is mounted, and the drive wheel meshes with a straight toothed rack on the lower edge of the die rod.

[0013] As a further embodiment of this utility model, the servo motor is mounted on a motor mounting base, and the motor mounting base is mounted on the lower mold base.

[0014] As a further embodiment of this utility model, a notch is provided on the lower edge of the die rod away from the positioning fixture, and the straight toothed rack is inlaid in the notch.

[0015] As a further embodiment of this utility model, each of the punching waste ejector pins is mounted on a waste ejector pin seat, the waste ejector pin seat is mounted on the lower die seat, and the waste ejector pin seat is provided with a horizontal through hole for the die rod to pass through.

[0016] As a further embodiment of this utility model, the die rod is provided with radial through holes that correspond to and cooperate with each of the punches and each of the punching waste tops.

[0017] As a further embodiment of this utility model, the length of the portion of the punching waste ejector pin that mates with the radial through hole is greater than the length of the portion of the punch that mates with the radial through hole.

[0018] As a further embodiment of this invention, the centerline of the die rod and the centerline of the tubular part are on the same straight line.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] Due to the above structural design, namely, the upper die is equipped with a punch, the lower die is equipped with a positioning fixture and the positioning fixture has horizontal linear reciprocating die rods on both sides, it is not only convenient to remove waste material from the tube wall of tubular parts, but also greatly improves production efficiency and meets the increasingly high requirements of modern industry and production for core-pulling molds. Attached Figure Description

[0021] Appendix Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0022] The labels in the diagram are as follows:

[0023] 10 - Upper mold, 20 - Lower mold;

[0024] 11-Upper mold base, 12-Punch, 13-Punch base;

[0025] 21-Lower die holder, 22-Positioning fixture, 23-Die rod, 24-Punching scrap ejector pin, 25-Servo motor, 26-Motor mounting base, 27-Scrap ejector pin holder;

[0026] 251 - Drive wheel;

[0027] 231-Notch, 232-Straight rack, 233-Radial through hole;

[0028] 271 - Horizontal through hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] The features and performance of this utility model will be further described in detail below with reference to the embodiments. Example

[0033] like Figure 1 As shown, this application discloses a long-stroke waste core-pulling mechanism for processing tubular parts, including an upper mold 10 and a lower mold 20.

[0034] The upper die 10 includes an upper die base 11 and four punches 12 disposed in the middle of the lower surface of the upper die base 11. The number of punches is usually an even number. Each punch 12 is mounted on a punch holder 13, and the punch holder 13 is mounted on the upper die base 11.

[0035] The lower die 20 includes a lower die base 21 and a positioning fixture 22 disposed in the middle of the upper surface of the lower die base 21. The positioning fixture 22 cooperates with each of the punches 12. A die rod 23 capable of horizontal linear reciprocating motion is provided on both sides of the positioning fixture 22. The axis of the die rod 23 is on the same straight line as the axis of the tubular part.

[0036] In operation, the tubular part is placed on the positioning fixture 22. Two die rods 23 move towards each other, with portions of the two die rods penetrating the tubular part. The upper die 10 descends, and the punch 12 punches a hole in the tubular part. Waste material from the tubular part's wall remains within the die rods 23. After the upper die 10 ascends, the two die rods 23 move away from each other and are removed from the tubular part. After removal, the waste material falls out of the die rods 23. Therefore, this application not only facilitates the removal of waste material from the tubular part's wall but also significantly improves production efficiency, meeting the increasingly stringent requirements of modern industry and production for core-pulling molds.

[0037] In a preferred embodiment, each die rod 23 is provided with two punching waste ejector pins 24, which are the same number as half of the four punches 12 and cooperate with the die rod 23. When there is too much waste in the die rod 23 and it is difficult to fall off, the punching waste ejector pins 24 move downward to push the waste in the die rod out and make it fall off.

[0038] Specifically, it also includes a servo motor 25, on the output shaft of which a drive wheel 251 is mounted. The drive wheel 251 meshes with a straight rack 232 on the lower edge of the die rod 23. Since the drive wheel 251 meshes with the straight rack 232, the servo motor 25 can drive the die rod 23 to perform linear reciprocating motion, thereby causing the die rod 23 to enter or exit the tubular part.

[0039] Specifically, the servo motor 25 is mounted on the motor mounting base 26, and the motor mounting base 26 is mounted on the lower mold base 21.

[0040] Specifically, the die rod 23 has a notch 231 at its lower edge away from the positioning fixture 22, and the straight toothed rack 232 is inlaid in the notch 231.

[0041] Specifically, each of the punching scrap ejector pins 24 is mounted on a scrap ejector pin seat 27, which is mounted on the lower die seat 21. The scrap ejector pin seat 27 is provided with a horizontal through hole 271 for the die rod 23 to pass through.

[0042] Specifically, the die rod 23 is provided with radial through holes 233 that correspond to each of the punches 12 and each of the punching waste ejector pins 24. The length of the part of the punching waste ejector pin 24 that mates with the radial through hole 233 is greater than the length of the part of the punch 12 that mates with the radial through hole 233. Therefore, the punching waste ejector pin 24 can remove the waste that cannot fall out of the radial through hole 233 of the die rod 23.

[0043] In summary, this utility model, through the above-described structural design, overcomes the shortcomings of the prior art and features a reasonable structure, convenient cleaning, and high production efficiency.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A long-stroke waste core-pulling mechanism for tubular parts, used for processing tubular parts, comprising an upper mold (10) and a lower mold (20), characterized in that: The upper die (10) includes an upper die base (11) and a plurality of punches (12) disposed in the middle of the lower surface of the upper die base (11). The lower die (20) includes a lower die base (21) and a positioning fixture (22) disposed in the middle of the upper surface of the lower die base (21). The positioning fixture (22) cooperates with each of the punches (12). A die rod (23) capable of horizontal linear reciprocating motion is provided on both sides of the positioning fixture (22).

2. The long-stroke waste core-pulling mechanism for tubular parts according to claim 1, characterized in that: Each of the die rods (23) is provided with a punching waste ejector pin (24) above it, which is the same number as half of the number of punches (12) and cooperates with the die rod (23).

3. The long-stroke waste core-pulling mechanism for tubular parts according to claim 2, characterized in that: Each of the punches (12) is mounted on a punch holder (13), which is mounted on the upper die holder (11).

4. The long-stroke waste core-pulling mechanism for tubular parts according to claim 3, characterized in that: It also includes a servo motor (25), on the output shaft of which a drive wheel (251) is mounted, and the drive wheel (251) meshes with a straight rack (232) on the lower edge of the die rod (23).

5. The long-stroke waste core-pulling mechanism for tubular parts according to claim 4, characterized in that: The servo motor (25) is mounted on the motor mounting base (26), and the motor mounting base (26) is mounted on the lower mold base (21).

6. The long-stroke waste core-pulling mechanism for tubular parts according to claim 5, characterized in that: The die rod (23) has a notch (231) at its lower edge away from the positioning fixture (22), and the straight toothed rack (232) is inlaid in the notch (231).

7. The long-stroke waste core-pulling mechanism for tubular parts according to claim 6, characterized in that: Each of the punching scrap ejector pins (24) is mounted on a scrap ejector pin seat (27), which is mounted on the lower die seat (21). The scrap ejector pin seat (27) is provided with a horizontal through hole (271) for the die rod (23) to pass through.

8. The long-stroke waste core-pulling mechanism for tubular parts according to claim 7, characterized in that: The die rod (23) is provided with radial through holes (233) that correspond to each of the punches (12) and each of the punching waste ejector pins (24).

9. The long-stroke waste core-pulling mechanism for tubular parts according to claim 8, characterized in that: The length of the part of the punching waste ejector pin (24) that mates with the radial through hole (233) is greater than the length of the part of the punch (12) that mates with the radial through hole (233).

10. The long-stroke waste core-pulling mechanism for tubular parts according to claim 9, characterized in that: The centerline of the die rod (23) is on the same straight line as the centerline of the tubular part.

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