Positioning equipment for punching salient points on copper pipe

Abstract

The utility model relates to positioning equipment for punching salient points on a copper pipe, which belongs to the field of copper pipe processing and comprises a fixing plate, a dotting needle fixing support is fixed on the upper surface of the fixing plate, an air cylinder is fixed on the left side of the dotting needle fixing support, and a limiting seat is arranged on the inner bottom wall of the dotting needle fixing support. A threaded rod is fixed to the outer side of an output shaft of the air cylinder, the outer surface of the threaded rod is in threaded connection with an adjusting nut, and a pull head is arranged on the outer side of the threaded rod. According to the positioning equipment for punching the salient points on the copper pipe, the air cylinder drives the pull head with an angle to backwards pull the elastic pieces on the two sides, the elastic pieces are provided with the two salient points, the two salient points are formed on the inner arm of the copper pipe from inside to outside through opening of the pull head, the two salient points can be formed at the same time, and then the air cylinder moves forwards and the elastic pieces are automatically closed; the adjusting nut and the limiting block can adjust the backward stroke of the air cylinder to adjust the size of the protruding point, the elastic piece is thin and good in toughness, and due to the fact that the two sides simultaneously exert outward force, stress is uniform, and needle breaking is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of copper tube processing, in particular to a positioning device for copper tube convex point punching. Background Art

[0002] Since copper tubes have the advantages of good thermal conductivity, easy processing and long service life, refrigerators, air conditioners and other electrical equipment often use copper tubes as heat dissipation and medium delivery pipelines for refrigeration systems. Depending on the specific application, copper tubes need to be subjected to various mechanical processing, such as bending, punching, dotting, cutting, welding, etc. Among them, the dotting process is to process convex points on the surface of the copper tube, so that the copper tube can play a positioning role when installed with other components.

[0003] For example, a double-dot-punching device suitable for copper tubes of air conditioners is disclosed in Chinese patent announcement number (CN208912925U). The copper tube is transported in an orderly manner toward the clamping seat under the guidance of the feeding vibration plate and the conveying path. The copper tube is positioned and clamped by the clamping action of the fixed clamping seat and the dynamic clamping seat. The two dot-punching mechanisms dot two points on the inner wall of the copper tube to form convex points on the outer wall of the copper tube. The utility model uses mechanical equipment to transport the copper tube in an orderly manner, reduces labor and improves work efficiency; and can dot the two points required by the copper tube so that the copper tube can be used for other production steps such as welding, which plays a positioning role during installation and greatly improves production efficiency.

[0004] However, the above patent still has the problem of low efficiency in dotting and positioning for convex dots on copper tubes. For example, in the above patent, the copper tube is positioned and clamped by the clamping action of the fixed clamp seat and the dynamic clamp seat, and two dotting mechanisms dot two points on the inner wall of the copper tube. However, the above method can only be used for copper tubes with larger diameters. It is difficult to convex dots on tubes below Ф7 now because the tube diameter is too small and the inner hole is too small, so the dotting needle is easily broken, and only one point can be punched each time, which is very inefficient. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a positioning device for punching bumps on copper tubes, which has the advantages of high efficiency in punching and positioning processing, and solves the problem in the prior art that the copper tube is positioned and clamped by the clamping action of a fixed clamp seat and a dynamic clamp seat, and two punching mechanisms punch two points on the inner wall of the copper tube. However, the above method can only be used for copper tubes with larger diameters. It is difficult to punch bumps on tubes with diameters below 7 at present, because the tube diameter is too small, the inner hole is too small, the punching needle is easily broken, and only one point can be punched at a time, which is very inefficient.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning device for punching bumps on copper tubes, comprising a fixing plate, a punching needle fixing bracket is fixed to the upper surface of the fixing plate, a cylinder is fixed to the left side of the punching needle fixing bracket, a limit seat is provided on the inner bottom wall of the punching needle fixing bracket, a threaded rod is fixed to the outer side of the cylinder output shaft, an adjusting nut is threadedly connected to the outer surface of the threaded rod, a pull head is provided on the outer side of the threaded rod, and spring needles are fixed to the front and rear sides of the pull head.

[0007] Furthermore, a limiting groove for the threaded rod to slide is formed on the upper surface of the limiting seat, and the diameter of the adjusting nut is larger than the inner diameter of the limiting groove.

[0008] Furthermore, a processing hole is opened on the right side of the dot-marking needle fixing bracket, and the pull head and two spring needles are slidably connected to the inner wall of the processing hole.

[0009] Furthermore, the cross-sectional shape of the front end of the slider is a triangle.

[0010] Furthermore, dotted convex points are fixed on the opposite sides of the two spring pins.

[0011] Furthermore, a fixing slot is provided on the upper surface of the threaded rod, and the pull head is inserted between the front and rear inner walls of the fixing slot.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. The positioning device for making bumps on copper tubes, the cylinder drives an angled pull head to pull back the spring pieces on both sides with two bumps on the spring pieces, which are opened by the pull head to form two bumps from the inside to the outside on the inner arm of the copper tube. The two bumps can be formed at the same time, and then the spring piece closes automatically when the cylinder moves forward. The adjusting nut and the limit block can adjust the backward stroke of the cylinder to adjust the size of the bumps. The spring piece is very thin and has good toughness. Since both sides exert force outward at the same time, the force is even and the needle is not easy to break.

[0014] 2. The positioning device for punching bumps on the copper tube drives the pull head to open the spring needles on both sides through the cylinder, so that two bumps can be formed at the same time, which is more efficient than the method of punching only one point at a time in the prior art. Since the bumps on the spring needles are squeezed outward from the copper tube, this may make the bumps more uniform and firm. The spring needles are thin and have good toughness. Both sides exert force outward at the same time and the force is uniform, which reduces the risk of the needle breaking during the bumping process. Especially when operating on copper tubes with a diameter of less than Ф7, the backward stroke of the cylinder can be adjusted by adjusting the nut and the limit block, so as to adjust the size of the bumps, increase the adaptability and flexibility of the equipment, make the equipment more durable during long-term use, reduce the frequency of maintenance and replacement of parts, and the equipment can adjust the size of the bumps, which provides flexibility for the production of copper tubes of different specifications and meets the needs of different customers. The equipment can adapt to copper tubes of different diameters, provides flexibility in the production process, and enables the production line to quickly adapt to the production needs of different products. By accurately controlling the formation process of the bumps, the quality of the final product can be improved and the generation of defective products can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a top view of the structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the pull head and the spring pin of the utility model.

[0018] In the figure: 1 fixing plate, 2 dot-marking needle fixing bracket, 3 cylinder, 4 limit seat, 5 adjusting nut, 6 pull head, 7 spring needle, 8 threaded rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3In this embodiment, a positioning device for punching bumps on a copper tube comprises a fixing plate 1, a punching needle fixing bracket 2 is fixed on the upper surface of the fixing plate 1, a cylinder 3 is fixed on the left side of the punching needle fixing bracket 2, a limit seat 4 is provided on the inner bottom wall of the punching needle fixing bracket 2, a threaded rod 8 is fixed on the outer side of the output shaft of the cylinder 3, the copper tube is sleeved on the two spring needles 7 and the outer side of the pull head 6, the cylinder 3 drives an angled pull head 6 to pull back the spring needles 7 on both sides, an adjusting nut 5 is threadedly connected to the outer surface of the threaded rod 8, a pull head 6 is provided on the outer side of the threaded rod 8, and spring needles 7 are fixed on the front and rear sides of the pull head 6, the output shaft of the cylinder 3 extends forward, and the two spring needles can close to the side of the pull head 6 by themselves.

[0021] In this embodiment, a limiting groove is provided on the upper surface of the limiting seat 4 for the threaded rod 8 to slide, and the diameter of the adjusting nut 5 is larger than the inner diameter of the limiting groove. The adjusting nut 5 and the limiting block 4 can adjust the backward stroke of the cylinder 3 to adjust the size of the protrusion.

[0022] In this embodiment, a processing hole is opened on the right side of the dot-marking needle fixing bracket 2, and the pull head 6 and the two spring needles 7 are slidably connected to the inner wall of the processing hole. The cross-sectional shape of the front end of the pull head 6 is triangular. By adjusting the nut and the limit block, the backward stroke of the cylinder can be adjusted, thereby adjusting the size of the protrusion, increasing the adaptability and flexibility of the equipment, making the equipment more durable during long-term use, and reducing the frequency of maintenance and replacement of parts.

[0023] In this embodiment, the two spring needles 7 are fixed with dot-punching convex points on the opposite sides. The two convex points on the spring leaf are opened by the pull head 6 on the inner wall of the copper tube from the inside to the outside to form two convex points. The two convex points can be formed at the same time. A fixed slot is provided on the upper surface of the threaded rod 8. The cylinder drives the pull head to open the spring needles on both sides, so that two convex points can be formed at the same time. This is more efficient than the method of only punching one dot at a time in the prior art. Since the convex points on the spring needle are squeezed outward in the copper tube to form, this may make the convex points more uniform and firm. The spring needle is thin and has good toughness. The pull head 6 is inserted between the front and rear inner walls of the fixed slot. The spring needle 7 is very thin and has good toughness. Since both sides are simultaneously exerted outward with force, the force is even and the needle is not easy to break.

[0024] It should be noted that the technology used by the equipment, which uses a cylinder to drive the pull head to open the spring needle, is an innovation of the traditional convex dot punching process and can provide new technical solutions for related industries. Since the equipment design reduces the risk of needle breakage, it also means that safety during operation is improved, reducing the possibility of operator injury. Further reducing material waste and improving efficiency will help reduce waste in the production process, thereby having a smaller impact on the environment. Since the equipment is designed with durability in mind, it may be easier to maintain and repair, reducing downtime.

[0025] The equipment can adjust the size of the bumps, which provides flexibility for the production of copper tubes of different specifications and meets the needs of different customers. The equipment can adapt to copper tubes of different diameters, providing flexibility in the production process, so that the production line can quickly adapt to the production needs of different products. By precisely controlling the formation process of the bumps, the quality of the final product can be improved and the production of defective products can be reduced.

[0026] The working principle of the above embodiment is:

[0027] The copper tube is put on the outside of the two spring needles 7 and the pull head 6, and the cylinder 3 drives an angled pull head 6 to pull the spring needles 7 on both sides. The spring piece has two protrusions that are opened through the pull head 6 to form two protrusions on the inner wall of the copper tube from the inside to the outside. The two protrusions can be formed at the same time, and then the output shaft of the cylinder 3 extends forward, and the two spring needles can close to the side of the pull head 6 by themselves. The adjusting nut 5 and the limit block 4 can adjust the backward stroke of the cylinder 3 to adjust the size of the protrusion. The spring needle 7 is very thin and has good toughness. Since both sides are simultaneously exerted outward with uniform force, the needle is not easy to break.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A positioning device for copper tube bumping, comprising a fixing plate (1), characterized in that: A dot-punch needle fixing bracket (2) is fixed on the upper surface of the fixing plate (1), a cylinder (3) is fixed on the left side of the dot-punch needle fixing bracket (2), a limit seat (4) is provided on the inner bottom wall of the dot-punch needle fixing bracket (2), a threaded rod (8) is fixed on the outer side of the output shaft of the cylinder (3), an adjusting nut (5) is threadedly connected to the outer surface of the threaded rod (8), a pull head (6) is provided on the outer side of the threaded rod (8), and spring needles (7) are fixed on both the front and rear sides of the pull head (6).

2. A copper tube convex point positioning device according to claim 1, characterized in that: The upper surface of the limiting seat (4) is provided with a limiting groove for the threaded rod (8) to slide, and the diameter of the adjusting nut (5) is larger than the inner diameter of the limiting groove.

3. A copper tube convex point positioning device according to claim 1, characterized in that: A processing hole is provided on the right side of the dot-marking needle fixing bracket (2), and a pull head (6) and two spring needles (7) are slidably connected to the inner wall of the processing hole.

4. A copper tube convex point positioning device according to claim 1, characterized in that: The cross-sectional shape of the front end of the slider (6) is triangular.

5. A copper tube convex point positioning device according to claim 1, characterized in that: The two shrapnel needles (7) are both fixed with dotted convex points on the opposite sides.

6. A copper tube convex point positioning device according to claim 1, characterized in that: The upper surface of the threaded rod (8) is provided with a fixed slot, and the pull head (6) is inserted between the front and rear inner walls of the fixed slot.

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