Stamping die for copper pipe

Abstract

The utility model discloses a stamping die for a copper pipe, and relates to the technical field of machining. The device comprises a ventilation pressing plate, a limiting supporting frame and a discharging supporting frame, a supporting plate is clamped to one side in the discharging supporting frame in a sliding mode, an air cylinder is clamped to one side of the discharging supporting frame, the limiting supporting frame is clamped and fixed to the top of the discharging supporting frame, a plurality of lower limiting molds are clamped to the top of the limiting supporting frame in a penetrating mode, and the ventilation pressing plate is suspended on the top of the limiting supporting frame. An air pump is arranged at one end of the ventilation pressing plate, and a plurality of upper stamping dies are arranged at the bottom of the ventilation pressing plate and are suspended in the centers of the tops of the lower limiting dies correspondingly. Through the arrangement of the ventilation pressing plate, the limiting supporting frame and the discharging supporting frame, the problems that a copper pipe is difficult to demould quickly after being formed, the processing expenditure is increased due to the fact that lubricating oil or high-pressure water is used for washing the female die, and the temperature of the inner side of the die is difficult to transfer to the outer side for cooling quickly are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a stamping die for a copper tube. Background Art

[0002] Copper tubes are pressed and drawn seamless tubes. They are light in weight, good in thermal conductivity, high in low-temperature strength, strong, corrosion-resistant, easy to bend, easy to twist, not easy to crack, not easy to break, etc. Therefore, they are widely used in conveying pressurized liquids, as pressure measuring tubes for instruments, residential water pipes, heating and refrigeration pipes, etc. In the production and processing of copper tubes, the blanks placed in the stamping die are often stamped by a press to improve the processing efficiency of the copper tubes. The stamping die is a special process equipment that processes materials into parts in the cold stamping process, but it still has the following disadvantages in actual use:

[0003] The utility model with publication number CN216461198U discloses an ultra-thin stamping die for a copper tube of a circuit breaker switch, wherein the upper die comprises an upper die plate and a plurality of convex dies arranged on the upper die plate, the lower die comprises a lower die plate and a plurality of concave dies arranged on the lower die plate, the convex dies correspond to the concave dies one by one, the concave die comprises a concave die seat connected to the lower die plate and a die bottom slider for limiting the bottom shape of the copper tube, the die seat is provided with a die cavity groove for limiting the circumferential shape of the copper tube, the die bottom slider is coaxial along the axial direction of the convex die Slidingly connected to the inner wall of the die cavity groove; a lower adjustment plate is provided at the bottom of the die bottom slider, and the lower adjustment plate is provided with a lower adjustment portion for adjusting the distance between the lower adjustment plate and the die seat. After the copper tube is stamped and formed in the stamping die, when the punch is separated from the inner side of the die, the copper tube is often retained on the inner side of the die. Since the copper tube has a certain length and fits the inner wall of the die, it is difficult to demould quickly. Although the copper tube can be demoulded quickly by using lubricating oil or flushing the die with high-pressure water, it will greatly increase the cost of copper tube processing.

[0004] After the blank is stamped into shape using a stamping die, the stress generated by the stamping will cause the temperature of the stamping die to continue to rise. However, if the stamping die is subjected to stamping operations at high temperatures for a long time, the die may be deformed and the quality of the finished product may be affected. When the stamping die is cooled by air using a heat dissipation device, the outside of the stamping die is often cooled. However, in order to ensure the strength of the structure, the stamping die is usually thicker, and the temperature of the blank processing position on the inside of the die is difficult to quickly transfer to the outside of the die, resulting in a low cooling efficiency. Utility Model Content

[0005] The utility model aims to provide a stamping die for a copper tube, which solves the problem that when the stamping die is stamping a blank, the shape of the copper tube makes it difficult to quickly demold after forming, and the use of lubricating oil or flushing the die with high-pressure water will lead to increased processing expenses. When the die is cooled by a heat dissipation device, the temperature on the inside is difficult to be quickly transferred to the outside for cooling due to the thickness of the die when the die is cooled.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a stamping die for a copper tube, comprising a ventilated pressure plate, a limit support frame and a discharging support frame, wherein a support plate is slidably clamped in one side of the discharging support frame, a cylinder is clamped in one side of the discharging support frame, a fixed limit support frame is clamped in the top of the discharging support frame, a plurality of lower limit dies are clamped through the top of the limit support frame, a ventilated pressure plate is suspended from the top of the limit support frame, an air pump is arranged at one end of the ventilated pressure plate, a plurality of upper stamping dies are arranged at the bottom of the ventilated pressure plate, and a plurality of upper stamping dies are respectively suspended at the center of the top of a plurality of lower limit dies;

[0008] After the die is stamped and formed, the support plate is driven to move by the cylinder, so that the processed copper tube can be discharged through the discharge support frame under the action of airflow. The operation is simple and convenient, and no lubricating oil or high-pressure water flushing is required, which reduces the processing cost. The staff can take lower limit dies and upper stamping dies of different sizes according to the needs of copper tube processing, so that the mold can process copper tubes of different sizes at the same time, thereby improving the flexibility of mold use. Air can be filled into the ventilation pressure plate through an air pump, and air can be filled between the lower limit die and the upper stamping die through a sealing pad, so that the air pressure squeezes the processed copper tube and discharges the copper tube, and the lower limit die and the upper stamping die can be cooled down by the flowing cold air, and the cooling is fast and efficient.

[0009] Furthermore, a buffer pad is clamped and fixed on the top of the ventilation pressure plate, a telescopic limit tube is clamped around the bottom of the ventilation pressure plate, a shock absorbing spring is clamped around the bottom of the ventilation pressure plate, and the shock absorbing spring is located on the outer peripheral surface of the telescopic limit tube;

[0010] The press applies pressure to the ventilated platen, which can be buffered by the buffer pad and shock-absorbing spring, thereby reducing the damage to the limit support frame and the ventilated platen and extending the service life of the stamping die.

[0011] Furthermore, a plurality of sealing pads are clamped and fixed at the bottom of the ventilation pressure plate, and ventilation holes are provided through the bottom of the plurality of sealing pads, a threaded rod is clamped and fixed at the bottom of each sealing pad, and a plurality of upper stamping dies are screwed and fixed to the bottom of the plurality of threaded rods;

[0012] After the copper tube is stamped, the sealing gasket can fit on the upper side of the lower limit mold, so that when the air pump inflates between the lower limit mold and the upper stamping mold, the air will not leak through the lower limit mold and the upper side of the upper stamping mold, thereby ensuring the demoulding efficiency of the copper tube.

[0013] Furthermore, a ventilation hose is inserted through one end of the air pump and connected thereto, and the other end of the ventilation hose is inserted through one end of the ventilation pressure plate and connected thereto, and the plurality of ventilation holes are connected through the ventilation pressure plate and the ventilation hose, and the air pump is connected to one end of the discharge support frame;

[0014] After the copper tube is stamped, the air pump can fill air into the space between the lower limit die and the upper stamping die through the ventilation pressure plate and the air holes. The copper tube is squeezed by air pressure, which can make the copper tube quickly demoulded and discharged through the discharge support frame. There is no need to use lubricating oil or flush with high-pressure water, which reduces the processing cost. The downward airflow can take away the heat generated during the stamping process and quickly cool down the lower limit die and the upper stamping die.

[0015] Furthermore, the top of the limit support frame is provided with limit slots around, the top of the limit support frame is provided with a plurality of slots, a plurality of lower limit molds are inserted and connected in the plurality of slots, the telescopic limit tube is slidably connected to the top of the limit slot, and the damping spring is connected to the top of the limit support frame;

[0016] The staff can take lower limit dies and upper stamping dies of different sizes according to the needs of copper tube processing, so that the mold can process copper tubes of different sizes at the same time, improving the flexibility of mold use.

[0017] Furthermore, a movable slide groove is provided at one end of the top of the discharging support frame, a shock-absorbing base is clamped and fixed around the bottom of the discharging support frame, the support plate is slidably clamped on the inner side of the movable slide groove, a telescopic rod is slidably clamped at one end of the cylinder, the other end of the telescopic rod is clamped on one end of the support plate, the telescopic rod is inserted through one end of the discharging support frame, a plurality of first discharging holes are penetrated through the top of the support plate, a plurality of second discharging holes are penetrated through the bottom of the discharging support frame, the plurality of first discharging holes are respectively attached to the bottom of the plurality of clamping grooves, and the plurality of second discharging holes are respectively suspended from the bottom of the plurality of clamping grooves;

[0018] During the copper tube stamping process, the cylinder drives the support plate to move so that the first discharge hole is separated from the top of the second discharge hole, so that the support plate supports the blank to ensure the stability of the stamping process. After the stamping is completed, the cylinder drives the support plate to move so that the first discharge hole is attached to the top of the second discharge hole, so that the copper tube can be discharged through the first discharge hole and the second discharge hole.

[0019] The utility model has the following beneficial effects:

[0020] The utility model solves the problem that after the copper tube is stamped and formed in the stamping die, when the punch is separated from the inner side of the die, the copper tube often stays on the inner side of the die. Since the copper tube has a certain length and fits the inner wall of the die, it is difficult to demould quickly. Although the use of lubricating oil or flushing the die with high-pressure water can demould the copper tube quickly, it will greatly increase the expense of copper tube processing. After the copper tube is stamped and formed between the upper stamping die and the lower limit die, the air pump fills air into the space between the lower limit die and the upper stamping die through the ventilated pressure plate, so that the air pressure squeezes the processed copper tube, so that the copper tube is quickly demoulded through the lower limit die and the bottom of the upper stamping die, and there is no need to use lubricating oil or flush with high-pressure water, thereby reducing the processing cost.

[0021] The utility model solves the problem that after the blank is stamped and formed by the stamping die, the stress generated by the stamping will cause the temperature of the stamping die to continue to rise, but the stamping die is kept at high temperature for a long time for stamping operation, which may cause deformation of the die and affect the quality of the finished product. When the stamping die is cooled by air using a heat dissipation device, the outside of the stamping die is often cooled. However, in order to ensure the strength of the structure, the stamping die is usually thicker, and the temperature of the blank processing position on the inside of the die is difficult to be quickly transferred to the outside of the die, resulting in low cooling efficiency. After the copper tube is pumped into the air between the lower limit die and the upper stamping die by an air pump for extrusion demoulding, the continuous airflow can cool the inner wall of the lower limit die and the outer peripheral surface of the upper stamping die, and the cooling is fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural effect diagram of the utility model;

[0023] Figure 2 This is a structural diagram of the ventilation pressure plate of the utility model;

[0024] Figure 3 It is a bottom view of the ventilation pressing plate and the upper punching die of the utility model;

[0025] Figure 4 It is a structural diagram of the limit support frame and the lower limit mold of the utility model;

[0026] Figure 5 This is a structural diagram of the discharging support frame of the utility model.

[0027] Reference numerals:

[0028] 1. Ventilation plate; 101. Upper stamping die; 102. Air pump; 103. Buffer pad; 104. Ventilation hose; 105. Telescopic limit tube; 106. Shock-absorbing spring; 107. Sealing pad; 108. Threaded rod; 109. Ventilation hole; 2. Limit support frame; 201. Lower limit die; 202. Slot; 203. Limit slide; 3. Discharge support frame; 301. Shock-absorbing base; 302. Cylinder; 303. Moving slide; 304. Telescopic rod; 305. Support plate; 306. First discharge hole; 307. Second discharge hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-5 As shown, the utility model is a stamping die for a copper tube, comprising a ventilated pressure plate 1, a limit support frame 2 and a discharging support frame 3, a support plate 305 is slidably clamped on one side of the discharging support frame 3, a cylinder 302 is clamped on one side of the discharging support frame 3, a fixed limit support frame 2 is clamped on the top of the discharging support frame 3, a plurality of lower limit dies 201 are clamped through the top of the limit support frame 2, a ventilated pressure plate 1 is suspended from the top of the limit support frame 2, an air pump 102 is arranged at one end of the ventilated pressure plate 1, a plurality of upper stamping dies 101 are arranged at the bottom of the ventilated pressure plate 1, and the plurality of upper stamping dies 101 are respectively suspended at the center of the top of the plurality of lower limit dies 201;

[0031] The staff takes the lower limit mold 201 and the upper stamping mold 101 of different sizes according to the needs of copper tube processing, clamps the lower limit mold 201 to the inner side of the limit support frame 2, and screws the upper stamping mold 101 to the bottom of the ventilation platen 1. When processing the copper tube, the blank is placed in the inner side of the lower limit mold 201, and the press is controlled to drive the ventilation platen 1 to move downward quickly, so that the upper stamping mold 101 and the lower limit mold 201 punch the blank into the copper tube, and the cylinder 302 drives the support plate 305 to move so that the first discharge hole 306 fits the bottom of the second discharge hole 307. The air pump 102 fills air into the ventilation platen 1 and pumps it into the space between the lower limit mold 201 and the upper stamping mold 101 through the vent 109. The copper tube is discharged through the bottom of the discharge support frame 3 by air pressure, and at the same time, the air flow cools the inner wall of the lower limit mold 201 and the outer peripheral surface of the upper stamping mold 101.

[0032] Among them Figure 1-3As shown, a buffer pad 103 is clamped and fixed on the top of the ventilation pressure plate 1, a telescopic limit tube 105 is clamped around the bottom of the ventilation pressure plate 1, and a shock-absorbing spring 106 is clamped around the bottom of the ventilation pressure plate 1. The shock-absorbing spring 106 is located on the outer circumferential surface of the telescopic limit tube 105. A plurality of sealing pads 107 are clamped and fixed on the bottom of the ventilation pressure plate 1. A vent hole 109 is penetrated through the bottom of the plurality of sealing pads 107. A threaded rod 108 is clamped and fixed on the bottom of each sealing pad 107. A plurality of upper stamping dies 101 are screwed and fixed to the bottom of the plurality of threaded rods 108. A ventilation hose 104 is penetrated and clamped on one end of the air pump 102. The other end of the ventilation hose 104 is penetrated and clamped on one end of the ventilation pressure plate 1. A plurality of ventilation holes 109 are penetrated and connected through the ventilation pressure plate 1 and the ventilation hose 104. The air pump 102 is clamped on one end of the discharging support frame 3.

[0033] The staff takes the upper stamping die 101 of corresponding size according to the needs of copper tube processing, and screws the upper stamping die 101 to the outer circumference of the threaded rod 108. The press applies pressure to the top of the buffer pad 103 to make the ventilation platen 1 move downward along the telescopic limit tube 105 to stamp the copper tube. After processing and forming, the air pump 102 fills air into the space between the lower limit die 201 and the upper stamping die 101 through the ventilation hose 104, the ventilation platen 1 and the vent 109, and squeezes the copper tube by air pressure to demold the copper tube. After demolding is completed, the press releases the squeezing of the ventilation platen 1, and the ventilation platen 1 is reset under the elastic force of the shock-absorbing spring 106.

[0034] Among them Figure 1 , 4 As shown in , 5, the top of the limit support frame 2 is provided with a limit slot 203, and the top of the limit support frame 2 is provided with a plurality of slots 202, and a plurality of lower limit molds 201 are inserted and connected in the plurality of slots 202, and the telescopic limit tube 105 is slidably connected to the top of the limit slot 203, and the damping spring 106 is connected to the top of the limit support frame 2;

[0035] A movable slide groove 303 is provided at one end of the top of the discharging support frame 3, and a shock-absorbing base 301 is clamped and fixed around the bottom of the discharging support frame 3. The support plate 305 is slidably clamped on the inner side of the movable slide groove 303. A telescopic rod 304 is slidably clamped at one end of the cylinder 302, and the other end of the telescopic rod 304 is clamped on one end of the support plate 305. The telescopic rod 304 penetrates and is inserted into one end of the discharging support frame 3. A plurality of first discharging holes 306 are penetrated and provided on the top of the support plate 305, and a plurality of second discharging holes 307 are penetrated and provided on the bottom of the discharging support frame 3. The plurality of first discharging holes 306 are respectively attached to the bottom of the plurality of card slots 202, and the plurality of second discharging holes 307 are respectively suspended from the bottom of the plurality of card slots 202.

[0036] The staff takes the lower limit mold 201 of the corresponding size according to the needs of copper tube processing, and clamps the lower limit mold 201 to the inner side of the clamping slot 202. After the copper tube is stamped and formed, the cylinder 302 drives the telescopic rod 304 to extend and retract, and further drives the support plate 305 to move along the movable slide slot 303, so that the first discharge hole 306 is attached to the top of the second discharge hole 307, and the copper tube is discharged through the first discharge hole 306 and the second discharge hole 307 under the action of air pressure.

[0037] The specific working principle of the utility model is as follows: the staff takes the lower limit mold 201 and the upper stamping mold 101 of corresponding sizes according to the needs of copper tube processing, screws and fixes the upper stamping mold 101 to the outer peripheral surface of the threaded rod 108, and clamps the lower limit mold 201 to the inner side of the clamping groove 202. When processing the copper tube, the blank is placed in the inner side of the lower limit mold 201, and the press is controlled to drive the ventilated pressing plate 1 to move downward quickly to stamp the copper tube. After the copper tube is stamped and formed, the cylinder 302 drives the telescopic rod 304 to extend and retract, and further drives the support plate 305 to move along the moving slide groove 30 3 moves, so that the first discharge hole 306 is attached to the top of the second discharge hole 307, and the air pump 102 fills air into the space between the lower limit mold 201 and the upper stamping mold 101 through the ventilation hose 104, the ventilation platen 1 and the ventilation hole 109, and the copper tube is squeezed by air pressure to be demoulded. At the same time, the air flow cools the inner wall of the lower limit mold 201 and the outer peripheral surface of the upper stamping mold 101, and the press releases the extrusion of the ventilation platen 1. The ventilation platen 1 is reset under the elastic force of the shock-absorbing spring 106, and the cylinder 302 drives the support plate 305 to reset, and the next batch of blanks are stamped.

[0038] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A copper tube stamping die, comprising a ventilated pressing plate (1), a limiting support frame (2) and a discharge support frame (3), characterized in that: A support plate (305) is slidably clamped on one side of the discharge support frame (3), a cylinder (302) is clamped on one side of the discharge support frame (3), the top of the discharge support frame (3) is clamped on a fixed limit support frame (2), a plurality of lower limit molds (201) are clamped through the top of the limit support frame (2), a ventilation pressure plate (1) is suspended from the top of the limit support frame (2), an air pump (102) is provided at one end of the ventilation pressure plate (1), and a plurality of upper stamping molds (101) are provided at the bottom of the ventilation pressure plate (1), and the plurality of upper stamping molds (101) are respectively suspended at the center of the top of the plurality of lower limit molds (201).

2. A copper tube stamping die according to claim 1, characterized in that: A buffer pad (103) is clamped and fixed on the top of the ventilation pressure plate (1), a telescopic limit tube (105) is clamped around the bottom of the ventilation pressure plate (1), and a shock absorbing spring (106) is clamped around the bottom of the ventilation pressure plate (1), and the shock absorbing spring (106) is located on the outer peripheral surface of the telescopic limit tube (105).

3. The copper tube stamping die according to claim 1, characterized in that: A plurality of sealing pads (107) are clamped and fixed to the bottom of the ventilation pressure plate (1), and ventilation holes (109) are provided through the bottom of the plurality of sealing pads (107). A threaded rod (108) is clamped and fixed to the bottom of each sealing pad (107), and the plurality of upper stamping dies (101) are screwed and fixed to the bottom of the plurality of threaded rods (108).

4. A copper tube stamping die according to claim 3, characterized in that: One end of the air pump (102) is penetrated and clamped with a ventilation hose (104), and the other end of the ventilation hose (104) is penetrated and clamped with one end of the ventilation pressure plate (1). The plurality of ventilation holes (109) are connected through the ventilation pressure plate (1) and the ventilation hose (104), and the air pump (102) is clamped with one end of the discharge support frame (3).

5. The copper tube stamping die according to claim 2, characterized in that: The top of the limit support frame (2) is provided with limit slots (203) around the periphery, the top of the limit support frame (2) is provided with a plurality of slots (202), a plurality of lower limit molds (201) are inserted through and clamped in the plurality of slots (202), the telescopic limit tube (105) is slidably clamped in the top of the limit slot (203), and the damping spring (106) is clamped in the top of the limit support frame (2).

6. A copper tube stamping die according to claim 5, characterized in that: A movable slide groove (303) is provided at one end of the top of the discharging support frame (3), and a shock-absorbing base (301) is fixedly connected around the bottom of the discharging support frame (3). The support plate (305) is slidably connected to the inner side of the movable slide groove (303). A telescopic rod (304) is slidably connected to one end of the cylinder (302), and the other end of the telescopic rod (304) is connected to one end of the support plate (305). The telescopic rod (304) is inserted through one end of the discharging support frame (3). A plurality of first discharging holes (306) are provided through the top of the support plate (305), and a plurality of second discharging holes (307) are provided through the bottom of the discharging support frame (3). The plurality of first discharging holes (306) are respectively attached to the bottom of the plurality of slots (202), and the plurality of second discharging holes (307) are respectively suspended from the bottom of the plurality of slots (202).

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