A copper tube diameter reducing tensioning device

Abstract

This utility model discloses a copper tube diameter-changing stretching device, including a device body. A lead screw is rotatably connected to the inner wall of the device body. The left end of the lead screw passes through the device body and is connected to the output shaft of a first motor. A movable bracket is installed through the lead screw. A guide rod is fixedly connected to the inner wall of the device body. The guide rod is located on the front and rear sides of the lead screw and passes through the movable bracket. A diameter-changing stretching fixture is fixedly installed at the upper end of the movable bracket. A material support frame is installed on the right side of the device body. Under the action of a second motor, the diameter-changing stretching die frame is rotated through a transmission shaft to adjust the die hole position so that the die hole with the required diameter is adjusted to the top. Under the action of a first electric telescopic rod, a second support plate frame is pushed to adjust the height of the support frame appropriately. This is used to support and hold the stretched copper tube after changing the diameter size. Under the action of the second electric telescopic rod, a third support plate frame is pushed to adjust the height appropriately. A roller is used to support and hold the copper tube before stretching.

Description

Technical Field

[0001] This utility model relates to the field of copper tube processing technology, specifically a copper tube diameter changing and stretching device. Background Technology

[0002] A copper tube reducing and drawing device is a device that can process copper tubes of different diameters by reducing their diameter during the drawing process. In some stages of the drawing process, the ends of the copper tube are pre-narrowed to facilitate the passage of the copper tube through the reducing die hole of the reducing die. After the copper tube passes through the die hole, it is clamped by a reducing clamp and pulled by a corresponding drive structure. This results in the copper tube being drawn and compressed through the reducing die hole. The drawing process can be described as either "air drawing" (where a mandrel is not placed inside the tube blank during drawing) or "drawing with a mandrel inside the tube blank, where the mandrel is pulled out of the die hole along with the tube during drawing." This results in more uniform metal deformation than air drawing, and higher accuracy in inner diameter and surface quality.

[0003] Most existing copper tube reducing and stretching devices are only suitable for processing copper tubes of a single size. When it is necessary to process copper tubes of different sizes, it is necessary to either purchase multiple stretching devices with different reducing dies, or replace the reducing dies of the same stretching device. Changing dies is slow and troublesome. Moreover, after changing the die, the size of the die hole of the reducing die changes, and the size of the stretched copper tube also changes. The support after stretching also needs to be adjusted accordingly. Furthermore, the height of the support before stretching also needs to be adjusted due to the different copper tube sizes, which is quite troublesome. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or existing copper tube diameter reducing and stretching devices, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a copper tube diameter changing and stretching device. When it is necessary to change the diameter size, the screw is turned so that the screw disengages from the corresponding fixing hole. Under the action of the second motor, the diameter changing and stretching mold frame is rotated through the transmission shaft, thereby adjusting the position of the mold hole so that the mold hole with the required diameter is adjusted to the top. The screw thread in the corresponding fixing hole enhances the fixation and stability of the diameter changing and stretching mold frame. Under the action of the first electric telescopic rod, the second support plate is pushed to adjust the height of the support frame appropriately. This is used to support and hold the stretched copper tube after changing the diameter size. Under the action of the second electric telescopic rod, the third support plate is pushed to adjust the appropriate height. The roller is used to support and hold the copper tube before stretching.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A copper tube diameter-changing stretching device includes a device body, a lead screw rotatably connected to the inner wall of the device body, the left end of the lead screw passing through the device body and connected to the output shaft of a first motor, a movable bracket passing through the lead screw, a guide rod fixedly connected to the inner wall of the device body, the guide rod being disposed on the front and rear sides of the lead screw, the guide rod passing through the movable bracket, a diameter-changing stretching clamp fixedly disposed at the upper end of the movable bracket, and a material support frame disposed on the right side of the device body; The device body includes a drive shaft that is rotatably connected through the right side of the device body. The left end of the drive shaft is connected to the output shaft of the second motor. A variable diameter stretching mold frame is fixedly connected to the right end of the drive shaft. The variable diameter stretching mold frame has mold holes and fixing holes arranged in a ring array. The fixing holes are located inside the mold holes near the center point of the variable diameter stretching mold frame.

[0008] As a preferred embodiment of the copper tube diameter reducing and stretching device of this utility model, the device body further includes a first support plate frame fixedly arranged on the front and rear sides of the device body, a first electric telescopic rod is installed on the upper end of the first support plate frame, and a second support plate frame is fixedly connected to the upper telescopic end of the first electric telescopic rod.

[0009] As a preferred embodiment of the copper tube diameter changing and stretching device of this utility model, the device body further includes a third motor installed on the upper end of the second support plate frame, the output shaft of the third motor is connected to the rotating shaft, and the upper end of the rotating shaft is fixedly connected to the support frame.

[0010] In a preferred embodiment of the copper tube diameter reducing and stretching device of this utility model, the material support frame includes an opening groove opened inside the material support frame near the left side, and a screw is threaded through the left side of the opening groove.

[0011] In a preferred embodiment of the copper tube diameter changing and stretching device of this utility model, the material support frame further includes a second electric telescopic rod that is installed at equal intervals on the upper end of the material support frame, and the upper end of the second electric telescopic rod that is installed at equal intervals is fixedly connected to the lower end of the same third support plate frame.

[0012] As a preferred embodiment of the copper tube diameter changing and stretching device of this utility model, the material support frame further includes a fourth support frame that is fixedly arranged at equal intervals on the upper end of the third support frame near the front and rear sides, and a roller is rotatably connected between the two fourth support frames in each group.

[0013] As a preferred embodiment of the copper tube diameter changing stretching device of this utility model, the material support frame further includes springs fixedly connected to the inner sides of the two fourth support plates at the front and rear of each group, and an annular limiting plate fixedly connected to the inner end of the springs, the annular limiting plate being disposed through the outer side of the support roller.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: When it is necessary to change the diameter, the screw is turned so that it disengages from the corresponding fixing hole. Under the action of the second motor, the diameter-changing stretching mold frame is rotated through the transmission shaft, thereby adjusting the position of the mold hole so that the mold hole with the required diameter is adjusted to the top. The screw thread in the corresponding fixing hole enhances the stability of the diameter-changing stretching mold frame. Under the action of the first electric telescopic rod, the second support plate is pushed to adjust the height of the support frame appropriately. This is used to support and hold the stretched copper tube after changing the diameter. Under the action of the second electric telescopic rod, the third support plate is pushed to adjust the appropriate height. The roller is used to support and hold the copper tube before stretching. At the same time, the copper tube is stably limited before stretching under the action of the annular limiting plate and spring, preventing the copper tube from deviating during the stretching process and affecting the stretching effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the device body of this utility model; Figure 3 This is a schematic diagram of the third motor, rotating shaft, and support frame structure of this utility model; Figure 4 This is a schematic diagram of the mobile support structure of this utility model; Figure 5 This is a schematic diagram of the material support frame structure of this utility model.

[0016] In the diagram: 1. Device body; 101. Drive shaft; 102. Second motor; 103. Variable diameter stretching mold frame; 104. Mold hole; 105. Fixing hole; 106. First support plate frame; 107. First electric telescopic rod; 108. Second support plate frame; 109. Third motor; 110. Rotating shaft; 111. Support rod frame; 2. Lead screw; 3. First motor; 4. Guide rod; 5. Moving bracket; 6. Variable diameter stretching fixture; 7. Material support frame; 701. Opening slot; 702. Screw; 703. Second electric telescopic rod; 704. Third support plate frame; 705. Fourth support plate frame; 706. Idler roller; 707. Annular limiting plate frame; 708. Spring. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] This utility model provides a copper tube diameter changing and stretching device. When it is necessary to change the diameter size, the screw is turned so that it disengages from the corresponding fixing hole. Under the action of the second motor, the diameter changing stretching mold frame is rotated through the transmission shaft, thereby adjusting the position of the mold hole so that the mold hole with the required diameter is adjusted to the top. The screw thread in the corresponding fixing hole enhances the stability of the diameter changing stretching mold frame. Under the action of the first electric telescopic rod, the second support plate is pushed to adjust the height of the support frame appropriately. This is used to support and hold the stretched copper tube after changing the diameter size. Under the action of the second electric telescopic rod, the third support plate is pushed to adjust the height appropriately. The roller is used to support and hold the copper tube before stretching.

[0021] Figures 1-5 The diagram shown is an overall structural schematic of one embodiment of the copper tube diameter changing and stretching device of this utility model. Please refer to [link / reference]. Figures 1-5This embodiment of a copper tube diameter changing stretching device includes a device body 1. A lead screw 2 is rotatably connected to the inner wall of the device body 1. The left end of the lead screw 2 passes through the device body 1 and is connected to the output shaft of a first motor 3. A movable bracket 5 is provided through the lead screw 2. A guide rod 4 is fixedly connected to the inner wall of the device body 1. The guide rod 4 is located on the front and rear sides of the lead screw 2 and passes through the movable bracket 5. A diameter changing stretching clamp 6 is fixedly provided at the upper end of the movable bracket 5. A material support frame 7 is provided on the right side of the device body 1. During stretching, the moving bracket 5 moves on the lead screw 2 under the action of the first motor 3 and the lead screw 2, and the copper tube is pulled by the variable diameter stretching fixture 6. The copper tube is reduced in diameter by the variable diameter stretching mold 103. The variable diameter stretching fixture 6 is a prior art structure and is not a novel part of this patent.

[0022] The device body 1 includes a drive shaft 101 that is rotatably connected through the right side of the device body 1. The left end of the drive shaft 101 is connected to the output shaft of the second motor 102. The right end of the drive shaft 101 is fixedly connected to a variable diameter stretching mold frame 103. The variable diameter stretching mold frame 103 has mold holes 104 and fixing holes 105 arranged in a ring array on it. The fixing holes 105 are located inside the mold holes 104 and close to the center point of the variable diameter stretching mold frame 103.

[0023] The die holes 104, arranged in a ring array, have different diameters. Under the action of the second motor 102 and the drive shaft 101, the variable diameter stretching die frame 103 is rotated, so that the die hole 104 with the required diameter is located at the top. Depending on the situation, an angle sensor is set to detect the rotation angle when the drive shaft 101 drives the variable diameter stretching die frame 103 to rotate for adjustment. The angle sensor is not shown in this patent. It is suitable for adjusting the copper tube according to different diameter requirements. The die holes 104 are arranged in a ring array, that is, the center point of each die hole 104 with different diameters is on the same circular line. That is, the center point of the adjusted die hole 104 still corresponds to the clamping center point of the variable diameter stretching fixture 6. The die holes 104 and the fixing holes 105 are set one-to-one.

[0024] The device body 1 also includes a first support frame 106 fixedly installed on the front and rear sides of the device body 1. A first electric telescopic rod 107 is installed on the upper end of the first support frame 106. A second support frame 108 is fixedly connected to the upper telescopic end of the first electric telescopic rod 107. The device body 1 also includes a third motor 109 installed on the upper end of the second support frame 108. The output shaft of the third motor 109 is connected to a rotating shaft 110. A support frame 111 is fixedly connected to the upper end of the rotating shaft 110.

[0025] After adjusting the die hole 104, the second support plate frame 108 is pushed by the first electric telescopic rod 107 to appropriately adjust the height of the support frame 111, and the copper tube after the diameter change and stretching is supported by the support frame 111.

[0026] The material support frame 7 includes an opening slot 701 opened inside the material support frame 7 near the left side, and a screw 702 is threaded through the left side of the opening slot 701. The material support frame 7 also includes a second electric telescopic rod 703 that is installed at equal intervals on the upper end of the material support frame 7. The upper end of the second electric telescopic rod 703 that is installed at equal intervals is fixedly connected to the lower end of the same third support frame 704.

[0027] Tightening the screw 702 connects it to the corresponding fixing hole 105, which strengthens the stability of the adjusted variable diameter stretching mold frame 103. Under the action of the second electric telescopic rod 703, the third support plate frame 704 is pushed to adjust to an appropriate height. The support roller 706 is used to support the copper tube before stretching. That is, when the copper tube is supported by the support roller 706 before stretching, the center point of the copper tube and the center point of the mold hole 104 are on the same straight line.

[0028] The material support frame 7 also includes a fourth support frame 705 that is fixedly arranged at equal intervals on the upper end of the third support frame 704 near the front and rear sides. A roller 706 is rotatably connected between the two fourth support frames 705 in each group. The material support frame 7 also includes a spring 708 fixedly connected to the inner side of the two fourth support frames 705 in each group. An annular limiting plate 707 is fixedly connected to the inner end of the spring 708. The annular limiting plate 707 is arranged through the outer side of the roller 706.

[0029] During the variable diameter stretching process, the copper tube is stably limited by the annular limiting plate 707 and the spring 708 before stretching, preventing the copper tube from deviating during the stretching process and affecting the stretching effect.

[0030] Combination Figures 1-5The copper tube diameter changing and stretching device of this embodiment is used as follows: When it is necessary to change the diameter size, screw 702 is turned so that screw 702 is disengaged from the corresponding fixing hole 105. Under the action of the second motor 102 and the transmission shaft 101, the diameter changing and stretching die frame 103 is rotated so that the die hole 104 of the required diameter size is located at the top. Then, the screw 702 is threaded into the corresponding fixing hole 105 to enhance the stability of the diameter changing and stretching die frame 103. Under the action of the first electric telescopic rod 107, the second support plate frame 108 is pushed to adjust the height of the support rod frame 111 appropriately. After changing the diameter size, the support rod frame 111 supports the copper tube after diameter changing and stretching. Under the action of the second electric telescopic rod 703, the third support plate frame 704 is pushed to adjust the appropriate height. The roller 706 is used to support and hold the copper tube before stretching. That is, the copper tube before stretching is supported by the roller 706. When supported by roller 706, the center point of the copper tube and the center point of the die hole 104 are on the same straight line. At the same time, under the action of the annular limiting plate 707 and the spring 708, the copper tube is stably limited before stretching to prevent the copper tube from deviating during the stretching process and affecting the stretching effect. The copper tube is clamped by the variable diameter stretching fixture 6. Under the action of the first motor 3 and the lead screw 2, the moving bracket 5 moves on the lead screw 2 to stretch the copper tube by changing its diameter. By setting a sensor or industrial camera, the position change of the variable diameter stretching fixture 6 is detected. After the variable diameter stretching fixture 6 moves to an appropriate position, the third motor 109 and the rotating shaft 110 drive the support frame 111 to rotate 90 degrees. The support frame 111 supports and holds the copper tube after the variable diameter stretching. A central processing unit is set for operation control. The central processing unit is a prior art structure and the central processing unit model is S7-1500.

[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A copper tube reducing stretching device comprising a device body (1), characterized in that: The inner wall of the device body (1) is rotatably connected to a lead screw (2). The left end of the lead screw (2) passes through the device body (1) and is connected to the output shaft of the first motor (3). A movable bracket (5) is installed through the lead screw (2). A guide rod (4) is fixedly connected to the inner wall of the device body (1). The guide rod (4) is located on the front and rear sides of the lead screw (2). The guide rod (4) passes through the movable bracket (5). A variable diameter stretching clamp (6) is fixedly installed at the upper end of the movable bracket (5). A material support frame (7) is installed on the right side of the device body (1). The device body (1) includes a drive shaft (101) that is rotatably connected through the right side of the device body (1). The left end of the drive shaft (101) is connected to the output shaft of the second motor (102). The right end of the drive shaft (101) is fixedly connected to a variable diameter stretching mold frame (103). The variable diameter stretching mold frame (103) has mold holes (104) and fixing holes (105) arranged in a ring array. The fixing holes (105) are located inside the mold holes (104) and close to the center point of the variable diameter stretching mold frame (103).

2. The copper tube diameter reducing and stretching device according to claim 1, characterized in that: The device body (1) also includes a first support frame (106) fixedly installed on the front and rear sides of the device body (1). A first electric telescopic rod (107) is installed on the upper end of the first support frame (106), and a second support frame (108) is fixedly connected to the upper telescopic end of the first electric telescopic rod (107).

3. The copper tube diameter reducing and stretching device according to claim 2, characterized in that: The device body (1) also includes a third motor (109) installed on the upper end of the second support plate (108). The output shaft of the third motor (109) is connected to the rotating shaft (110), and the upper end of the rotating shaft (110) is fixedly connected to the support frame (111).

4. The copper tube diameter reducing and stretching device according to claim 1, characterized in that: The material support frame (7) includes an opening slot (701) opened inside the material support frame (7) near the left side, and a screw (702) is threaded through the inner left side of the opening slot (701).

5. The copper tube diameter reducing and stretching device according to claim 1, characterized in that: The material support frame (7) also includes a second electric telescopic rod (703) that is installed at equal intervals on the upper end of the material support frame (7), and the upper end of the second electric telescopic rod (703) that is installed at equal intervals is fixedly connected to the lower end of the same third support frame (704).

6. The copper tube diameter reducing and stretching device according to claim 5, characterized in that: The material support frame (7) also includes a fourth support frame (705) that is fixedly arranged at equal intervals on the upper end of the third support frame (704) near the front and rear sides, and a roller (706) is rotatably connected between the two fourth support frames (705) in each group.

7. The copper tube diameter reducing and stretching device according to claim 6, characterized in that: The material support frame (7) also includes two fourth support plates (705) in front and behind each group, with springs (708) fixedly connected to the inner sides of each spring (708), and an annular limiting plate (707) fixedly connected to the inner end of each spring (708). The annular limiting plate (707) is disposed through the outer side of the roller (706).

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