A multi-pass precision copper tube drawing forming machine

Abstract

The utility model relates to copper pipe drawing technical field discloses a copper pipe multistage precision drawing forming machine, including transmission equipment, top fixed mounting is used for to copper pipe drawing's drawing forming machine, and one end fixed mounting of transmission equipment is used for to copper pipe end clamping's clamping equipment, lubricating part sets up at the top of transmission equipment, lubricating part includes fixed pipe, fixedly installs at the top of transmission equipment, and the inner chamber of fixed pipe is detachably installed with smearing pipe, in the utility model, through lubricating part can continue to the even smearing lubricant of moving copper pipe outer wall, guarantees that lubricant forms continuous, even film on the surface of copper pipe, and it is difficult to appear local excess or deficiency to reduce the friction between copper pipe outer wall and drawing forming machine inner wall, avoids the scratch of copper pipe surface or wall thickness uneven, improves the quality of copper pipe.

Description

Technical Field

[0001] This utility model relates to the field of copper tube drawing technology, and in particular to a multi-pass precision drawing forming machine for copper tubes. Background Technology

[0002] The multi-pass precision drawing forming machine for copper tubes is a professional equipment used to produce high-precision copper tubes with high surface quality. It gradually reduces and fixes the diameter through a multi-pass drawing process to finally achieve the target size and performance requirements.

[0003] The multi-pass precision drawing forming machine for copper tubes mainly consists of a wire feeding device, a straightening device, and a multi-pass drawing die. The wire feeding device first feeds straight or coiled copper tubes to the straightening device, which then feeds them into the multi-pass drawing die. A clamping device then clamps one end of the copper tube passing through the die. After clamping one end, the clamping device moves in a straight line. The bent copper tube is completely straightened after passing through the multi-pass drawing die, and then sheared by a shearing device, thus completing the straightening process. However, during the straightening process, the outer wall of the copper tube and the inner wall of the multi-pass drawing device are under high pressure. Intense friction occurs, necessitating the application of lubricant to the outer wall of the copper tube entering the multi-pass drawing device. This creates a protective film between the outer wall of the copper tube and the inner wall of the drawing device, reducing direct contact and preventing adhesive wear (such as copper shavings adhering to the mold). In existing technologies, to reduce the cost of copper tube drawing, lubricant is typically applied manually to the outer wall of the copper tube before it enters the multi-pass drawing device using a brush or spray bottle. However, manual application makes it difficult to ensure that the lubricant forms a continuous and uniform film on the surface of the copper tube, easily resulting in localized over- or under-lubrication. Consequently, poorly lubricated areas increase friction, leading to scratches on the copper tube surface or uneven wall thickness, thus reducing the quality of the copper tube. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a multi-pass precision drawing forming machine for copper tubes, aiming to improve the problems in the existing technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a multi-pass precision drawing forming machine for copper tubes, comprising:

[0006] The transmission equipment has a drawing forming machine for drawing copper tubes fixedly installed on the top, and a clamping device for clamping the end of the copper tubes fixedly installed at one end of the transmission equipment.

[0007] Lubricating components are installed on top of the transmission equipment;

[0008] Lubricating components include:

[0009] The fixed tube is fixedly installed on the top of the transmission equipment, and the coating tube is detachably installed in the inner cavity of the fixed tube.

[0010] As a further description of the above technical solution:

[0011] The lubrication system also includes annular tubes and a micro water pump. Multiple annular tubes are fixedly installed in the inner cavity of the fixed tube. Multiple oil leakage holes are opened in annular distribution on the inner wall of the multiple annular tubes. An oil storage tank is fixedly installed on one side of the transmission equipment, and a micro water pump is fixedly installed at the top edge of the transmission equipment. An oil inlet pipe communicating with the inner cavity of the oil storage tank is fixedly installed at the liquid inlet end of the micro water pump, and an oil outlet pipe communicating with the inner cavity of the multiple annular tubes is fixedly installed at the liquid outlet end of the micro water pump.

[0012] As a further description of the above technical solution:

[0013] A collection box for collecting sludge is fixedly installed on the top of the transmission equipment. A fixed pipe is located directly above the collection box, and connecting plates that connect to the top edge of the collection box are fixedly installed on both sides of the fixed pipe. A filter screen for filtering sludge is detachably installed in the inner cavity of the collection box.

[0014] As a further description of the above technical solution:

[0015] One end of the applicator tube is fixedly fitted with a retaining ring. The outer diameter of the retaining ring is larger than the inner diameter of the fixed tube. The outer wall of the retaining ring is provided with multiple mounting holes arranged in a ring. Screws can be detachably installed in the inner cavity of the multiple mounting holes. One end of the fixed tube is provided with multiple threaded holes arranged in a ring to match the screws.

[0016] As a further description of the above technical solution:

[0017] The other end of the applicator tube is fixedly fitted with a positioning ring, and the inner wall of the fixed tube is fixedly installed with an installation ring. One end of the installation ring is fixedly installed with multiple plug-in pins in a ring shape, and one end of the positioning ring is provided with multiple plug-in holes that are compatible with the plug-in pins in a ring shape.

[0018] As a further description of the above technical solution:

[0019] A refueling pipe that communicates with the inner cavity of the oil tank is fixedly installed at the top edge of the tank, and a sealing cap is installed at the top of the refueling pipe by means of thread.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, lubricant is continuously and evenly applied to the outer wall of the moving copper tube through a lubricating component, ensuring that the lubricant forms a continuous and uniform film on the surface of the copper tube. This prevents local over- or under-lubricant application, thereby reducing the friction between the outer wall of the copper tube and the inner wall of the drawing forming machine, avoiding scratches on the surface of the copper tube or uneven wall thickness, and improving the quality of the copper tube. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is an assembly drawing of the oil storage tank and fixing pipe of this utility model;

[0024] Figure 3 This is an assembly drawing of the fixing tube and the coating tube of this utility model;

[0025] Figure 4 This utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0026] Legend:

[0027] 1. Transmission equipment; 2. Collection box; 3. Miniature water pump; 4. Oil storage tank; 5. Fixed pipe; 6. Ring pipe; 7. Positioning ring; 8. Application pipe; 9. Fixed ring; 10. Insertion post; 11. Mounting ring; 12. Filter screen; 13. Sealing cap; 14. Oil filling pipe. Detailed Implementation

[0028] 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.

[0029] Reference Figure 1-4 One embodiment of this utility model is a multi-pass precision drawing forming machine for copper tubes, comprising:

[0030] The conveying device 1 has a drawing forming machine for drawing copper tubes fixedly installed on its top. The conveying device 1 includes a base and multiple conveying rollers. The multiple conveying rollers are rotatably installed on the top of the base. Before one end of the copper tube is inserted into the drawing forming machine, the outer wall of the copper tube is in contact with the outer wall of the conveying rollers, thereby supporting the copper tube through the multiple conveying rollers. When the copper tube moves along the axial direction, the multiple conveying rollers rotate along their own axial direction under the action of friction, which can reduce the friction when the copper tube moves along its own axial direction (this is the prior art and will not be described in detail here).

[0031] One end of the transmission device 1 is fixedly equipped with a clamping device for clamping the end of the copper tube. The clamping device includes a clamping head and a guide rail. After one end of the copper tube passes through the drawing forming machine, the clamping head moves closer to the drawing forming machine along the guide rail until the clamping head clamps one end of the copper tube. Then, the clamping head moves away from the transmission device 1 along the guide rail. Under the action of the drawing forming machine, the bent copper tube can be straightened (this is the prior art and will not be described in detail here).

[0032] The fixed tube 5 is fixedly installed on the top of the transmission device 1. The coating tube 8 is detachably installed in the inner cavity of the fixed tube 5. After the coating tube 8 is installed in the inner cavity of the fixed tube 5, the central axis of the coating tube 8 and the fixed tube 5 coincides with each other. However, the central axis of the fixed tube 5 coincides with the central axis of the drawing forming machine. Before one end of the copper tube is inserted into the inside of the drawing forming machine, it is first inserted into the inner cavity of the coating tube 8. At the same time, the outer wall of the copper tube and the inner wall of the coating tube 8 are tightly attached. When the end of the copper tube is clamped by the clamping head and moves along the guide rail, the lubricating oil attached inside the coating tube 8 can be evenly coated on the outer wall of the copper tube.

[0033] The coating tube 8 is made of sponge. When the copper tube is inserted into the inner cavity of the coating tube 8 and moves along its own axis, the coating tube 8 wraps around the outer wall of the copper tube. At the same time, the inner wall of the coating tube 8 squeezes the outer wall of the copper tube. When the copper tube moves along its own axis, it can not only evenly apply lubricating oil to the outer wall of the copper tube, but also remove dust and copper shavings attached to the outer wall of the copper tube, thus preventing the copper shavings on the outer wall of the copper tube from adhering to the inner wall of the drawing forming machine and causing the outer wall of the copper tube to be scratched or worn.

[0034] Based on the applicant's understanding of the prior art, when the copper tube moves continuously along its own axis in the inner cavity of the coating tube 8, the continuous friction between the inner wall of the coating tube 8 and the outer wall of the copper tube can easily cause wear on the inner wall of the coating tube 8. Excessive wear on the inner wall of the coating tube 8 will cause the inner wall to be gradually thinned, resulting in a certain gap between the inner wall of the coating tube 8 and the outer wall of the tube, which makes it impossible for the lubricating oil attached inside the coating tube 8 to be evenly coated on the outer wall of the copper tube.

[0035] To solve the above technical problems, a fixing ring 9 is fixedly sleeved at one end of the application tube 8. The outer diameter of the fixing ring 9 is larger than the inner diameter of the fixing tube 5, and the outer wall of the fixing ring 9 has multiple mounting holes arranged in a ring. Screws can be detachably installed in the inner cavity of the multiple mounting holes. One end of the fixing tube 5 has multiple threaded holes arranged in a ring to match the screws. When the inner wall of the application tube 8 is excessively worn, causing a certain gap to form between the inner wall of the application tube 8 and the outer wall of the copper tube, the multiple screws are rotated with a tool until they are removed from the multiple threaded holes. Then, the application tube 8 is pulled out completely from the fixing tube. Pull out the inner cavity of tube 5, and then insert the new coating tube 8 into the inner cavity of the fixed tube 5 from one end of the fixed tube 5 until the central axis of the multiple mounting holes and the central axis of the open end of the multiple threaded holes coincide. Then, insert the small end of the multiple screws into the inner cavity of the multiple threaded holes from the multiple mounting holes. Next, use a tool to turn the screws again until the large end of the screws presses against one end of the fixing ring 9 to fix the coating tube 8. Finally, the coating tube 8 is replaced. The coating tube 8 can then be used to wrap the outer wall of the copper tube so that the lubricating oil attached inside the coating tube 8 can be evenly coated on the outer wall of the copper tube.

[0036] A positioning ring 7 is fixedly sleeved at the other end of the coating tube 8. An installation ring 11 is fixedly installed on the inner wall of the fixing tube 5. Multiple insertion posts 10 are fixedly installed in a ring at one end of the installation ring 11. Multiple insertion holes that are compatible with the insertion posts 10 are opened in a ring at one end of the positioning ring 7. When the coating tube 8 is fixed in the inner cavity of the fixing tube 5 by screws, the end of the installation ring 11 away from the fixing ring 9 and the end of the positioning ring 7 are attached. At the same time, multiple insertion posts 10 are inserted into the inner cavity of multiple insertion holes. The multiple insertion posts 10 and multiple insertion holes can support the end of the coating tube 8 away from the fixing ring 9 through mutual cooperation, preventing the end of the coating tube 8 away from the fixing ring 9 from collapsing when the copper tube moves in the inner cavity of the coating tube 8, which would affect the coating tube 8's application of lubricating oil to the outer wall of the copper tube.

[0037] Multiple annular tubes 6 are fixedly installed inside the cavity of the fixed tube 5. Multiple oil leakage holes are arranged in a ring on the inner wall of the multiple annular tubes 6. An oil storage tank 4 is fixedly installed on one side of the transmission device 1, and a micro water pump 3 is fixedly installed at the top edge of the transmission device 1. An oil inlet pipe communicating with the inner cavity of the oil storage tank 4 is fixedly installed at the inlet end of the micro water pump 3, and an oil outlet pipe communicating with the inner cavity of the multiple annular tubes 6 is fixedly installed at the outlet end of the micro water pump 3. Before applying lubricating oil to the outer wall of the copper tube using the applicator tube 8, the micro water pump 3 is started. (Its model is JSGBD-07W and can be purchased directly on the market). At this time, the lubricant in the inner cavity of the oil reservoir 4 enters the micro water pump 3 through the oil inlet pipe, and then enters the oil outlet pipe through the micro water pump 3. Then, it enters the inner cavity of multiple annular pipes 6 through the oil outlet pipe. The lubricating oil in the inner cavity of multiple annular pipes 6 is sprayed onto the outside of the coating tube 8 through multiple oil leakage holes. The coating tube 8 quickly absorbs the lubricating oil until the coating tube 8 is completely wetted by the lubricating oil. Then, the lubricating oil can be evenly applied to the outer wall of the copper tube through the coating tube 8.

[0038] The multiple annular tubes 6 and the multiple oil leakage holes on the outer wall allow the coating tube 8 to be quickly and evenly wetted, thus increasing the wetting rate.

[0039] The micro water pump 3 is equipped with a timer switch (model QJDS-100, which can be purchased directly on the market). The timer switch can turn the micro water pump 3 on and off at a time, so that the lubricant inside the oil tank 4 can be sprayed onto the outside of the coating tube 8 at a time and in a measured amount. This can meet the lubricant application needs of the coating tube 8 to the outer wall of the copper tube, and also avoid the waste of lubricant caused by applying too much lubricant to the outer wall of the copper tube.

[0040] A collection box 2 for collecting sludge oil is fixedly installed on the top of the transmission device 1. A fixed pipe 5 is located directly above the collection box 2, and connecting plates connected to the top edge of the collection box 2 are fixedly installed on both sides of the fixed pipe 5. When the copper pipe moves in the inner cavity of the coating pipe 8 and continuously squeezes the coating pipe 8, the coating pipe 8 will deform. At this time, the lubricant absorbed by the coating pipe 8 will be squeezed out due to the deformation. The squeezed lubricant flows out through the two open ends of the fixed pipe 5 into the inner cavity of the collection box 2, which can realize the collection of the squeezed lubricant and avoid the lubricant from being wasted or dripping onto the top of the transmission device 1 and causing pollution.

[0041] The inner cavity of the collection box 2 is detachably equipped with a filter screen 12 for filtering sludge oil. The squeezed-out lubricant usually contains copper shavings or impurities. When the lubricant falls into the collection box 2 and passes through the filter screen 12, the copper shavings or impurities mixed with the lubricant are trapped by the filter screen 12, which can separate the impurities or copper shavings from the lubricant, so that the lubricant collected in the collection box 2 can be reused, reducing the cost of copper tube production.

[0042] The filter screen 12 is connected to the inner wall of the collection box 2 by bolts, so as to facilitate the disassembly and assembly of the filter screen 12, thereby facilitating the cleaning of impurities or copper shavings accumulated on the outside of the filter screen 12.

[0043] A refueling pipe 14, which communicates with the inner cavity of the oil tank 4, is fixedly installed at the top edge of the oil tank 4. Lubricant can be added to the inside of the oil tank 4 in a timely manner through the refueling pipe 14, thereby continuously providing lubricant to the coating pipe 8.

[0044] A sealing cap 13 is installed on the top of the refueling pipe 14 via a threaded connection. The inner wall of the sealing cap 13 has an internal thread that matches the external thread, and the outer wall of the refueling pipe 14 has an external thread. After adding lubricating oil to the oil reservoir 4 through the refueling pipe 14, the sealing cap 13 is installed at the open end of the refueling pipe 14 through the engagement of the internal and external threads. This seals the open end of the refueling pipe 14, preventing dust or impurities in the air from entering the oil reservoir 4 through the refueling pipe 14 and contaminating the lubricant.

[0045] The fixed tube 5, the annular tube 6, the micro water pump 3, the coating tube 8, and the oil storage tank 4 constitute the lubrication component. The lubrication component continuously and evenly applies lubricant to the outer wall of the moving copper tube, ensuring that the lubricant forms a continuous and uniform film on the surface of the copper tube. It is not easy for the lubricant to be excessive or insufficient in some areas, thereby reducing the friction between the outer wall of the copper tube and the inner wall of the drawing forming machine, avoiding scratches on the surface of the copper tube or uneven wall thickness, and improving the quality of the copper tube.

[0046] 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 multi-pass precision drawing forming machine for copper tubes, characterized in that: include The top of the transmission device (1) is fixedly equipped with a drawing forming machine for drawing copper tubes, and one end of the transmission device (1) is fixedly equipped with a clamping device for clamping the end of the copper tube. A lubricating component is provided on top of the transmission device (1); The lubricating component includes: A fixed tube (5) is fixedly installed on the top of the transmission device (1), and an applicator tube (8) is detachably installed in the inner cavity of the fixed tube (5).

2. The multi-pass precision drawing forming machine for copper tubes according to claim 1, characterized in that: The lubricating component also includes an annular tube (6) and a micro water pump (3). Multiple annular tubes (6) are fixedly installed in the inner cavity of the fixed tube (5). Multiple oil leakage holes are provided in annular distribution on the inner wall of the multiple annular tubes (6). An oil storage tank (4) is fixedly installed on one side of the transmission device (1), and a micro water pump (3) is fixedly installed at the top edge of the transmission device (1). An oil inlet pipe communicating with the inner cavity of the oil storage tank (4) is fixedly installed at the liquid inlet end of the micro water pump (3), and an oil outlet pipe communicating with the inner cavity of the multiple annular tubes (6) is fixedly installed at the liquid outlet end of the micro water pump (3).

3. The multi-pass precision drawing forming machine for copper tubes according to claim 2, characterized in that: The top of the transmission device (1) is fixedly installed with a collection box (2) for collecting sludge and oil. The fixed pipe (5) is located directly above the collection box (2), and the two sides of the fixed pipe (5) are fixedly installed with connecting plates connected to the top edge of the collection box (2). The inner cavity of the collection box (2) is detachably installed with a filter screen (12) for filtering sludge and oil.

4. The multi-pass precision drawing forming machine for copper tubes according to claim 1, characterized in that: One end of the coating tube (8) is fixedly sleeved with a fixing ring (9). The outer diameter of the fixing ring (9) is larger than the inner diameter of the fixing tube (5). The outer wall of the fixing ring (9) is provided with multiple mounting holes in a ring. Screws can be detachably installed in the inner cavity of the multiple mounting holes. One end of the fixing tube (5) is provided with multiple threaded holes that are compatible with the screws in a ring.

5. A multi-pass precision drawing forming machine for copper tubes according to claim 4, characterized in that: The other end of the coating tube (8) is fixedly fitted with a positioning ring (7), and the inner wall of the fixing tube (5) is fixedly installed with an installation ring (11). One end of the installation ring (11) is fixedly installed with multiple plug-in posts (10) arranged in a ring. One end of the positioning ring (7) is provided with multiple plug-in holes that are compatible with the plug-in posts (10).

6. A multi-pass precision drawing forming machine for copper tubes according to claim 2, characterized in that: The oil tank (4) is fixedly installed with a refueling pipe (14) that communicates with its own inner cavity at the top edge. A sealing cap (13) is installed on the top of the refueling pipe (14) by thread engagement.

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