Novel in-mold synchronous flaring and double-point punching copper plug forming device

Abstract

The utility model discloses a novel in-mold synchronous flaring and double-point punching copper plug forming device which comprises a press machine, an output rod at the bottom of the press machine is connected with an upper mold, a lower mold is arranged below the upper mold, the upper mold is used for broaching a copper plug, and the lower mold is used for double punching of the copper plug. Step-by-step operation is combined into synchronous one-time operation through in-mold forming and a top inclined structure; flaring and double-point punching are completed through one-time action, in-mold forming is achieved, product precision is guaranteed, and the problem of precision loss caused by machining is solved; the working procedures are combined, the operation steps are reduced, the machining efficiency is improved, the process is optimized, the overall performance is improved, and the product quality is improved; the novel device is simpler and more convenient in structure and operability, and product precision loss caused by machining is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning parts technology, specifically a novel in-mold synchronous flaring and double-point copper plug forming device. Background Technology

[0002] Currently, in the air conditioner manufacturing process, a stainless steel-to-copper substitution project is underway. The steel-to-copper conversion requires copper plugs as transition interfaces for brazing with other copper-aluminum tubes. These transition copper plugs typically involve flaring and furnace welding to the steel component, followed by double-dimpled positioning and brazing with the external connecting pipe. The method used is a "step-by-step flaring and single-point dimple-making process." This method requires first flaring the copper plug with a reamer, and then dimple-making on both sides. The dimple-making process impacts the outside of the copper plug, causing deformation of the circular copper plug resulting from the flaring. This leads to poor copper plug machining accuracy, out-of-roundness of the product after dimple-making, and difficulties in assembling and welding with stainless steel components. Utility Model Content

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a novel in-mold synchronous flaring and double-point copper plug forming device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel in-mold synchronous bulging and double-point punching copper plug forming device includes a press, an upper mold connected to the output rod at the bottom of the press, and a lower mold below the upper mold. The upper mold is used for bulging the copper plug, and the lower mold is used for punching the copper plug.

[0006] Preferably, the press is mounted on the upper mounting plate, the output rod of the press passes through the upper mounting plate, and its lower end is connected to the upper mold, and the lower mold is mounted on the top of the lower mounting plate.

[0007] Preferably, the lower mounting plate has a worktable at the top, the lower mold is located at the center of the top of the worktable, the lower mold includes a mold body, sliders are provided on both sides of the mold body, and pressure blocks are provided on both sides of the bottom of the lower mounting plate.

[0008] Preferably, the bottom of the slider is slidably connected to the top of the worktable, the pressure block is located directly above its corresponding slider, and the opposing surfaces of the pressure block and the slider are both inclined. Under the pressure of the pressure block, the slider slides towards the mold body.

[0009] Preferably, a mold hole is provided at the center of the top of the mold body, and the enlarging head at the lower end of the upper mold is located directly above the mold hole. A punching rod is provided on the side of the slider near the mold body. The punching rod is a dotting head on the side near the mold body. The dotting head passes through the mold body and extends into the mold hole. A spring is sleeved on the outside of the punching rod. The spring is located between the mold body and the slider.

[0010] Preferably, the bottom of the workbench is provided with a ejector plate, the ejector plate is slidably connected to the workbench, and an ejector rod is provided at the center of the ejector plate. The ejector rod passes through the top surface of the workbench and the center of the lower end of the mold body, and the upper end of the ejector rod extends into the mold hole.

[0011] Preferably, pull rods are provided on both sides of the lower mold. The upper end of the pull rod is fixed to the bottom of the upper mounting plate, and the lower end of the pull rod passes through the ejector plate and the lower mounting plate. A through hole is provided at the connection between the lower mounting plate and the pull rod. A nut is screwed onto the lower end of the pull rod, and the outer diameter of the nut is smaller than the inner diameter of the through hole.

[0012] Preferably, the pull rod is provided with a positioning rod on the outside, the lower end of the positioning rod is fixed to the top of the lower mounting plate, and the positioning rod slides through the upper mounting plate.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] In this invention, in-mold forming and a tilting structure combine step-by-step operations into a single, synchronous operation; flaring and double-point marking are completed in a single action, achieving in-mold forming to ensure product precision and solving the problem of precision loss caused by processing; the process is combined, reducing the number of steps, improving processing efficiency, optimizing the process, improving overall performance, and enhancing product quality; the new device is simpler in structure and operation, reducing product precision loss caused by processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a novel in-mold synchronous flaring and double-point copper plug forming device according to this utility model.

[0016] Figure 2 This is a cross-sectional view of a novel in-mold synchronous flaring and double-point copper plug forming device according to this utility model.

[0017] Figure 3 This is an enlarged view of the structure at point A in a novel in-mold synchronous flaring and double-point copper plug forming device of this utility model.

[0018] Reference numerals in the attached drawings: 1. Press; 2. Upper die; 3. Lower die; 31. Slider; 32. Pressure block; 33. Die body; 34. Punching rod; 35. Spring; 36. Die hole; 4. Upper mounting plate; 41. Tie rod; 5. Lower mounting plate; 51. Positioning rod; 52. Worktable; 53. Unloading plate; 54. Unloading rod; 55. Through hole. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below.

[0020] The "range" disclosed in this utility model is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values ​​are listed as 1 and 2, and the maximum range values ​​are listed as 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.

[0021] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0022] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0023] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0024] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0025] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.

[0026] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.

[0027] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.

[0028] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.

[0029] The following embodiments further illustrate the specific implementation of the novel in-mold synchronous flaring and double-point copper plug forming device of this utility model. The novel in-mold synchronous flaring and double-point copper plug forming device of this utility model is not limited to the description in the following embodiments.

[0030] Example 1:

[0031] A novel in-mold synchronous flaring and double-point copper plug forming device, such as... Figure 1-3 As shown, it includes a press 1, an upper mold 2 connected to the output rod at the bottom of the press 1, and a lower mold 3 below the upper mold 2. The upper mold 2 is used for enlarging the copper plug, and the lower mold 3 is used for double drilling the copper plug.

[0032] In one possible implementation, the press 1 is mounted on the upper mounting plate 4, the output rod of the press 1 passes through the upper mounting plate 4, and its lower end is connected to the upper mold 2. The lower mold 3 is mounted on the top of the lower mounting plate 5.

[0033] In one possible implementation, the lower mounting plate 5 has a worktable 52 at the top, the lower mold 3 is located at the center of the top of the worktable 52, the lower mold 3 includes a mold body 33, both sides of the mold body 33 are provided with sliders 31, and both sides of the bottom of the lower mounting plate 5 are provided with pressure blocks 32.

[0034] In one possible implementation, the bottom of the slider 31 is slidably connected to the top of the worktable 52, and the pressure block 32 is located directly above its corresponding slider 31. The opposing surfaces of the pressure block 32 and the slider 31 are both inclined. Under the pressure of the pressure block 32, the slider 31 slides towards the mold body 33.

[0035] In one possible implementation, a mold hole 36 is provided at the center of the top of the mold body 33, and the enlarging head of the lower end of the upper mold 2 is located directly above the mold hole 36. A punching rod 34 is provided on the side of the slider 31 near the mold body 33. The punching rod 34 is a punching head on the side near the mold body 33. The punching head passes through the mold body 33 and extends into the mold hole 36. A spring 35 is sleeved on the outside of the punching rod 34. The spring 35 is located between the mold body 33 and the slider 31.

[0036] In one possible implementation, the bottom of the workbench 52 is provided with a ejector plate 53, which is slidably connected to the workbench 52. An ejector rod 54 is provided at the center of the ejector plate 53. The ejector rod 54 passes through the top surface of the workbench 52 and the center of the lower end of the mold body 33, and the upper end of the ejector rod 54 extends into the mold hole 36.

[0037] In one possible implementation, pull rods 4 are provided on both sides of the lower mold 3. The upper end of the pull rod 4 is fixed to the bottom of the upper mounting plate 4, and the lower end of the pull rod 4 passes through the ejector plate 53 and the lower mounting plate 5. A through hole 55 is provided at the connection between the lower mounting plate 5 and the pull rod 4. A nut is screwed onto the lower end of the pull rod 4, and the outer diameter of the nut is smaller than the inner diameter of the through hole 55.

[0038] In one possible implementation, a positioning rod 51 is provided on the outside of the pull rod 4. The lower end of the positioning rod 51 is fixed to the top of the lower mounting plate 5, and the positioning rod 51 slides through the upper mounting plate 4.

[0039] By adopting the above technical solution:

[0040] The molding process employs in-mold one-piece molding, powered by a press. When the press is in the initial position, the tube to be molded is placed in, and the upper die moves downward to press and tighten the copper plug into the molding die. The upper die moves downward through the side-sloping cutting block, converting the linear motion into the oblique motion. The double-pointing tip moves linearly along a fixed trajectory. When the press continues to move downward to the bottom dead center, the flaring punch and the double-pointing tip action are completed simultaneously. When the press returns to the initial position, the pulling mechanism removes the molded tube from the mold cavity.

[0041] Working principle: such as Figure 1-3 As shown, the press 1 provides power. When the press 1 is in the initial position, the tube to be formed is placed in. The upper mold 2 moves downward to press and tighten the copper plug into the mold hole 36. The pressure block 32 moves downward. Under the pressure of the pressure block 32, the slider 31 slides towards the mold body 33, converting the linear motion into the oblique motion. The double dotting head moves in a straight line along a fixed trajectory. When the press 1 continues to move downward to the bottom dead center, the expanding head and the dotting head complete the double dotting action at the same time. When the press 1 returns to the initial position, the pulling mechanism removes the formed tube from the mold cavity.

[0042] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A novel in-mold simultaneous flaring and double-pointed copper plug forming device, characterized by: The utility model provides a copper plug double -hole expansion device, including press (1), the output rod of press (1) bottom is connected with upper die (2), lower die (3) is equipped below upper die (2), upper die (2) is used for the reaming of copper plug, lower die (3) is used for the double -hole of copper plug.

2. A novel in-mold synchronous flaring and double-pointed copper plug forming device according to claim 1, characterized in that: The press (1) is provided on the upper mounting plate (4), the output rod of the press (1) passes through the upper mounting plate (4), the lower end is connected with the upper die (2), and the lower die (3) is arranged on the top of the lower mounting plate (5).

3. A novel in-mold synchronous flaring and double-pointed copper plug forming device according to claim 2, characterized in that: The lower mounting plate (5) is provided with a workbench (52) on the top, the lower die (3) is arranged at the center of the top of the workbench (52), the lower die (3) comprises a die body (33), the die body (33) is arranged on the slider (31) on both sides, and the lower mounting plate (5) is provided with a pressing block (32) on both sides of the bottom.

4. A novel in-mold synchronous flaring and double-pointed copper plug forming device according to claim 3, characterized in that: The bottom of the slider (31) is slidably connected with the top of the workbench (52), the pressing block (32) is arranged directly above the corresponding slider (31), and the opposite surfaces of the pressing block (32) and the slider (31) are both provided with inclined surfaces, and under the extrusion of the pressing block (32), the slider (31) slides towards the die body (33).

5. A novel in-mold synchronous flaring and double-pointed copper plug forming device as claimed in claim 4, characterized in that: The die body (33) is provided with a die hole (36) at the center of the top, the reaming head of the lower end of the upper die (2) is arranged directly above the die hole (36), one side of the slider (31) close to the die body (33) is provided with a punching rod (34), one side of the punching rod (34) close to the die body (33) is a dotting head, the dotting head passes through the die body (33) and extends into the die hole (36), and the punching rod (34) is provided with a spring (35) outside.

6. A novel in-mold synchronous flaring and double-pointed copper plug forming device as claimed in claim 5, characterized in that: The workbench (52) is provided with a material returning plate (53) on the bottom, the material returning plate (53) is slidably connected with the workbench (52), the material returning plate (53) is provided with a material returning rod (54) at the center, the material returning rod (54) passes through the top surface of the workbench (52) and the lower end center of the die body (33), and the material returning rod (54) extends into the die hole (36) at the upper end.

7. A novel in-mold synchronous flaring and double-pointed copper plug forming device as claimed in claim 6, characterized in that: The lower die (3) is provided with a pull rod (41) on both sides, the upper end of the pull rod (41) is fixed to the bottom of the upper mounting plate (4), the lower end of the pull rod (41) passes through the material returning plate (53) and the lower mounting plate (5), the lower mounting plate (5) is provided with a through hole (55) at the connection position with the pull rod (41), the lower end of the pull rod (41) is rotatably connected with a nut, and the outer diameter of the nut is smaller than the inner diameter of the through hole (55).

8. A novel in-mold synchronous flaring and double-pointed copper plug forming device according to claim 7, characterized in that: The pull rod (41) is provided with a positioning rod (51) outside, the lower end of the positioning rod (51) is fixed to the top of the lower mounting plate (5), and the positioning rod (51) slides through the upper mounting plate (4).

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