Automatic necking equipment for U-shaped copper pipe

Abstract

The utility model discloses automatic necking equipment for a U-shaped copper pipe, and relates to the technical field of U-shaped copper pipe machining. The U-shaped copper pipe necking device comprises a workbench, the top of the workbench is provided with a fixing assembly used for fixing a U-shaped copper pipe, and the rear end of the workbench is further provided with a necking assembly used for necking the U-shaped copper pipe. The fixing assembly comprises a first two-way lead screw rotationally connected into a sliding groove in the top of the workbench. According to the U-shaped copper pipe necking device, the first two-way lead screw drives the mounting plates to move in the opposite direction or the back direction in the transverse direction, the two ends of a U-shaped copper pipe are fixed through the fixing plates on the mounting plates, the problem that U-shaped copper pipes of different sizes cannot be fixed and necked in the prior art is solved, meanwhile, the rotating disc is driven by the rotating shaft to rotate, and the U-shaped copper pipe necking device is convenient to use. And therefore, the necking blocks with different inner diameters are driven by the rotating disc to be in contact with the U-shaped copper pipe, and the problem that different-diameter necking treatment on the U-shaped copper pipe is inconvenient in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of U-shaped copper tube processing, in particular to an automatic shrinking device for a U-shaped copper tube. Background Art

[0002] As the name implies, the U-shaped copper tube is a copper tube in a U shape. It is a common copper tube, generally used to connect two parallel copper tubes. In the use of the U-shaped copper tube, in order to facilitate the connection between the U-shaped copper tube and other pipes, shrinking equipment is usually used to shrink the ends of the U-shaped copper tube, thereby reducing the diameter of the two ends, thereby facilitating the connection between the U-shaped copper tube and other pipes.

[0003] The document with the existing authorization announcement number CN217798528U discloses an automatic expansion and contraction device for copper tubes, including a device body, working grooves are symmetrically opened on the left and right sides of the top of the device body, a first servo motor is symmetrically fixedly connected to the left and right sides of the front of the device body, a slide groove is symmetrically opened in the middle of the bottom of the inner cavity of the two working grooves, the inner cavities of the two slide grooves are symmetrically rotatably connected with threaded rods, the bottom of the inner cavities of the two working grooves are symmetrically provided with mounting blocks, the middle of the back of the two mounting blocks is symmetrically fixedly connected with a second servo motor, and the middle of the back of the two mounting blocks is symmetrically opened with an empty groove;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. The automatic expansion and contraction device for copper tubes mentioned above places the copper tubes through mounting blocks and drives the copper tubes to move. However, when in use, since the spacing between the mounting blocks is fixed, it can only fix U-shaped copper tubes of the same size, and it is not convenient to contract U-shaped copper tubes of different sizes. The scope of application is small and the practicality is poor.

[0006] 2. The automatic expansion and contraction device for copper tubes mentioned above has a shrinking block threadedly connected to the back of the inner cavity of the left working groove, and a first supporting column is arranged in the middle of the inner cavity of the shrinking block; the back of the inner cavity of the right working groove is threadedly connected to the expanding block, and a second supporting column is arranged in the middle of the inner cavity of the expanding block. The shrinking block and the expanding block are used to expand and contract the tube, but when in use, the size of the shrinking block is fixed, resulting in that only the same size of shrinkage can be performed on the U-shaped copper tube, and the functionality is poor.

[0007] To this end, we provide a U-shaped copper tube automatic shrinking equipment to solve the above problems. Utility Model Content

[0008] The utility model aims to provide an automatic shrinking device for a U-shaped copper tube, which drives a mounting plate to move toward or away from each other in the lateral direction through a first bidirectional screw rod, and fixes the two ends of the U-shaped copper tube through a fixing plate on the mounting plate, thereby solving the problem that it is inconvenient to fix and shrink U-shaped copper tubes of different sizes. At the same time, a rotating disk is driven to rotate by a rotating shaft, so that shrinking blocks of different inner diameters are driven to contact the U-shaped copper tube through the rotating disk, thereby solving the problem that it is inconvenient to shrink U-shaped copper tubes of different diameters.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a U-shaped copper tube automatic shrinking device, comprising a workbench, a fixing component for fixing the U-shaped copper tube is arranged on the top of the workbench, and a shrinking component for shrinking the U-shaped copper tube is also arranged at the rear end of the workbench;

[0011] The fixing assembly includes a first bidirectional screw rod rotatably connected to a slide groove at the top of the workbench, both ends of the first bidirectional screw rod extend to the outside of the slide groove and are fixedly connected to a first hand wheel, both sides of the outer wall of the first bidirectional screw rod are threadedly sleeved with a first slider, the top of the first slider is fixedly connected to a mounting plate, the upper surface of the mounting plate is movably connected to a second slider, and the top of the second slider is fixedly connected to a fixing plate for fixing a U-shaped copper tube;

[0012] The shrinking assembly includes a fifth slider which is movably connected to both sides of the rear end of the workbench, an L-shaped frame is fixedly connected to the rear end surface of the fifth slider, a reducer is fixedly connected to the rear end surface of the vertical support arm of the L-shaped frame, a second drive motor is fixedly connected to one side of the reducer, an output shaft of the second drive motor is fixedly connected to the input end of the reducer, a rotating shaft is fixedly connected to the output end of the reducer, a front end of the rotating shaft is rotatably connected to the inner front end of the L-shaped frame, a rotating disk is sleeved on the outer wall of the rotating shaft, a plurality of shrinking blocks with different inner diameters are fixedly connected in a circular array on the front end surface of the rotating disk, and support columns are arranged inside the shrinking blocks.

[0013] The utility model is further configured as follows: both sides of the upper surface of the mounting plate are vertically fixedly connected with convex strips, the tops of the convex strips are movably connected to the inside of the grooves located on both sides of the bottom of the second slider, the front end of the upper surface of the mounting plate is fixedly connected to the first drive motor through the motor frame, the rear end of the upper surface of the mounting plate is fixedly connected to the first mounting seat, the output shaft of the first drive motor is fixedly connected to a one-way screw rod, the rear end of the one-way screw rod is rotatably connected to the first mounting seat, and the second slider is threadedly sleeved on the outer wall of the one-way screw rod.

[0014] The utility model is further configured as follows: second mounting seats are fixedly connected to both sides of the upper surface of the fixed plate, a first threaded rod is threadedly passed through the second mounting seat, one end of the first threaded rod is fixedly connected to a first screw cap, the other end of the first threaded rod is fixedly connected to a movable plate, and an outer wall of a side of the movable plate away from the first threaded rod is movably connected to a clamping block through a second mounting frame.

[0015] The utility model is further configured as follows: a first rubber pad is bonded in a groove at a central position of an upper surface of the fixing plate, and a second rubber pad is bonded on the arc-shaped surfaces of the clamping blocks.

[0016] The utility model is further configured as follows: the second mounting frame is fixedly connected to the center position of the outer wall of one side of the movable plate away from the first threaded rod, the second mounting frame is rotatably connected to the inside of the second threaded rod, the top end of the second threaded rod extends to the upper outside of the second mounting frame and is fixedly connected to the second screw cap, a fourth slider is threadedly sleeved on the outer wall of the second threaded rod, and the fourth slider is located on the outer wall of one side outside the second mounting frame and is fixedly connected to the center position of the outer wall of one side of the clamping block.

[0017] The utility model is further configured as follows: the front and rear ends of the outer wall of the movable plate on one side away from the first threaded rod are fixedly connected to the first mounting frame, the interior of the first mounting frame is fixedly connected to a sliding rod, a third sliding block is movably sleeved on the outer wall of the sliding rod, and the third sliding block is located on an outer wall of one side outside the first mounting frame and is respectively fixedly connected to the front and rear ends of the outer wall of one side of the clamping block.

[0018] The utility model is further configured as follows: a third mounting seat is fixedly connected to both sides of the rear end surface of the workbench, a second bidirectional screw rod is rotatably connected between the third mounting seats, both ends of the second bidirectional screw rod rotate through the third mounting seat and are fixedly connected to a second hand wheel, and a fifth slider is respectively threadedly sleeved on both sides of the outer wall of the second bidirectional screw rod.

[0019] The utility model is further configured as follows: the rear ends of the support columns are fixedly connected to the fixing rods, the rear ends of the fixing rods penetrate the rotating disk and are threadedly sleeved with fixing nuts, and the rear ends of the support columns and the fixing nuts are respectively attached to the front and rear end surfaces of the rotating disk.

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

[0021] 1. The utility model sets a fixing component, rotates one of the first hand wheels, and the first hand wheel drives the first bidirectional screw rod to rotate. Under the action of the threaded connection between the first bidirectional screw rod and the first slider, the first slider drives the mounting plate to move toward or away from each other in the lateral direction. When the spacing between the mounting plates reaches a preset value range, the first hand wheel is stopped, and the U-shaped copper tube is fixed to the fixing plate, which is convenient for fixing U-shaped copper tubes of different sizes, thereby facilitating the shrinking of U-shaped copper tubes of different sizes, thereby increasing its scope of application and improving its practicability.

[0022] 2. The utility model sets a shrinking component and starts the second drive motor. The output shaft of the second drive motor drives the rotating shaft to rotate through the reducer, so that the rotating shaft drives the rotating disk to rotate, and then the rotating disk drives the shrinking block of the specified inner diameter to be located behind the U-shaped copper tube, which facilitates the shrinking of different diameters of the U-shaped copper tube and enhances its functionality.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 It is a structural schematic diagram of the fixing component of the utility model.

[0027] Figure 3 It is a schematic diagram of the installation of the first bidirectional screw rod, the mounting plate and the second sliding block of the utility model.

[0028] Figure 4 It is a structural schematic diagram of the fixing plate of the utility model.

[0029] Figure 5 This is a structural disassembly diagram of the movable plate, the second installation frame and the clamping block of the utility model.

[0030] Figure 6 It is a structural schematic diagram of the necking component of the utility model.

[0031] Figure 7 This is a structural disassembly diagram of the fifth sliding block and the L-shaped frame of the utility model.

[0032] Figure 8 This is a structural disassembly diagram of the rotating disk of the utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1- workbench, 2- fixed assembly, 201- first bidirectional screw, 201a- first hand wheel, 201b- first slider, 202- mounting plate, 202a- convex strip, 203- second slider, 203a- motor frame, 203b- first drive motor, 203c- first mounting seat, 203d- unidirectional screw, 204- fixed plate, 204a- second mounting seat, 204b- first rubber pad, 205- moving plate, 205a- first threaded rod, 205b- first screw cap, 205c- first mounting frame, 205d- slide rod, 206- The second mounting frame, 206a-the second threaded rod, 206b-the second screw cap, 207-the clamping block, 207a-the third slider, 207b-the fourth slider, 207c-the second rubber pad, 3-the shrinking assembly, 301-the fifth slider, 301a-the third mounting seat, 301b-the second bidirectional screw rod, 301c-the second hand wheel, 302-the L-shaped frame, 303-the rotating shaft, 303a-the reducer, 303b-the second driving motor, 304-the rotating disk, 305-the shrinking block, 306-the support column, 306a-the fixing rod, 306b-the fastening nut. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Example 1

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, it is the first embodiment of the utility model, which provides an automatic shrinking device for U-shaped copper tubes, including a workbench 1, and a fixing component 2 for fixing the U-shaped copper tube is arranged on the top of the workbench 1. The fixing component 2 includes a first bidirectional screw rod 201, a mounting plate 202, a second slider 203 and a fixing plate 204. The first bidirectional screw rod 201 drives the mounting plate 202 to move toward or away from each other in the lateral direction, and the fixing plate 204 on the mounting plate 202 is used to fix the two ends of the U-shaped copper tube, thereby solving the existing problem that it is inconvenient to fix and shrink U-shaped copper tubes of different sizes.

[0038] Specifically, the first bidirectional screw rod 201 is rotatably connected in the slide groove on the top of the workbench 1 in the transverse direction, and the two ends of the first bidirectional screw rod 201 extend to the outside of the slide groove and are fixedly connected to the first hand wheel 201a. The outer wall of the first bidirectional screw rod 201 is threaded with a first slider 201b on both sides, and the top of the first slider 201b is fixedly connected to a mounting plate 202. The upper surface of the mounting plate 202 is movably connected to a second slider 203. The top of the second slider 203 is fixedly connected to a fixing plate 204 for fixing the U-shaped copper tube. The first bidirectional screw rod 201 and the first slider 201b are set to drive the mounting plate 202 to move. The setting of the first hand wheel 201a is convenient for rotating the first bidirectional screw rod 201. The setting of the mounting plate 202 is used to move the second slider 203 and other structures. The setting of the second slider 203 is used to drive the U-shaped copper tube to move toward the shrinking structure. The setting of the fixing plate 204 is used to fix the two ends of the U-shaped copper tube on the second slider 203.

[0039] Furthermore, both sides of the upper surface of the mounting plate 202 are vertically fixedly connected with convex strips 202a, and the tops of the convex strips 202a are movably connected to the grooves located on both sides of the bottom of the second sliding block 203;

[0040] The front end of the upper surface of the mounting plate 202 is fixedly connected to the first drive motor 203b through the motor frame 203a, the rear end of the upper surface of the mounting plate 202 is fixedly connected to the first mounting seat 203c, the output shaft of the first drive motor 203b is fixedly connected to the one-way screw rod 203d, the rear end of the one-way screw rod 203d is rotatably connected to the first mounting seat 203c, and the second slider 203 is threadedly sleeved on the outer wall of the one-way screw rod 203d;

[0041] The second mounting seats 204a are fixedly connected to both sides of the upper surface of the fixed plate 204, the first threaded rods 205a are threadedly penetrated on the second mounting seats 204a, one end of the first threaded rods 205a is fixedly connected to the first screw caps 205b, the other end of the first threaded rods 205a is fixedly connected to the movable plate 205, and the outer wall of the movable plate 205 away from the first threaded rods 205a is movably connected to the clamping block 207 through the second mounting frame 206;

[0042] A first rubber pad 204b is bonded in the groove at the center of the upper surface of the fixing plate 204, and a second rubber pad 207c is bonded on the arc surface of the clamping block 207;

[0043] The second installation frame 206 is fixedly connected to the center position of the outer wall of the side of the moving plate 205 away from the first threaded rod 205a. The second installation frame 206 is rotatably connected to the second threaded rod 206a. The top of the second threaded rod 206a extends to the upper outside of the second installation frame 206 and is fixedly connected to the second screw cap 206b. The outer wall of the second threaded rod 206a is threadedly sleeved with a fourth slider 207b. The fourth slider 207b is located on the outer wall of one side of the second installation frame 206 and is fixedly connected to the center position of the outer wall of one side of the clamping block 207.

[0044] The front and rear ends of the outer wall of the movable plate 205 on the side away from the first threaded rod 205a are fixedly connected to the first mounting frame 205c, the interior of the first mounting frame 205c is fixedly connected to the sliding rod 205d, the outer wall of the sliding rod 205d is movably sleeved with a third sliding block 207a, and the third sliding block 207a is located on the outer wall of the side outside the first mounting frame 205c and is fixedly connected to the front and rear ends of the outer wall of one side of the clamping block 207.

[0045] The operation process of this embodiment is as follows: one of the first hand wheels 201a is rotated, and the first hand wheel 201a drives the first bidirectional screw rod 201 to rotate, and under the action of the threaded connection between the first bidirectional screw rod 201 and the first slider 201b, the first slider 201b drives the mounting plate 202 to move toward or away from each other in the lateral direction, and when the distance between the mounting plates 202 reaches a preset value range, the first hand wheel 201a is stopped, and the two ends of the U-shaped copper tube are placed in the grooves on the fixing plate 204, and then the first screw cap 205b and the second screw cap 206b are rotated, and the first screw cap 205b and the second screw cap 206b are rotated. The cap 206b drives the first threaded rod 205a and the second threaded rod 206a to rotate respectively, so that the first threaded rod 205a and the second threaded rod 206a drive the clamping block 207 to move, and then the two ends of the U-shaped copper tube are clamped on the second slider 203 through the clamping block 207, and finally the first drive motor 203b is started, and the output shaft of the first drive motor 203b drives the one-way screw rod 203d to rotate, and the one-way screw rod 203d drives the U-shaped copper tube to move in the direction of the shrinking structure through the second slider 203, and then cooperates with the heating structure and the shrinking structure to realize the shrinking treatment of the two ends of the U-shaped copper tube.

[0046] Example 2

[0047] See also Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, it is the second embodiment of the utility model, which is based on the previous embodiment, but is different from the previous embodiment in that: the rear end of the workbench 1 is also provided with a shrinking component 3 for shrinking the U-shaped copper tube, and the shrinking component 3 includes a fifth slider 301, an L-shaped frame 302, a rotating shaft 303, a rotating disk 304, a shrinking block 305 and a support column 306. The rotating disk 304 is driven to rotate by the rotating shaft 303, so that the shrinking blocks 305 with different inner diameters are driven by the rotating disk 304 to contact the U-shaped copper tube, thereby solving the existing problem of inconvenience in shrinking different diameters of the U-shaped copper tube.

[0048] Specifically, two fifth sliders 301 are provided and are movably connected to both sides of the rear end of the workbench 1, and an L-shaped frame 302 is fixedly connected to the rear end surface of the fifth slider 301. A reducer 303a is fixedly connected to the rear end surface of the vertical support arm of the L-shaped frame 302, and a second driving motor 303b is fixedly connected to one side of the reducer 303a. The output shaft of the second driving motor 303b is fixedly connected to the input end of the reducer 303a, and the output end of the reducer 303a is fixedly connected to the rotating shaft 303. The front end of the rotating shaft 303 is rotatably connected to the inner front end of the L-shaped frame 302, and a rotating disk 304 is sleeved on the outer wall of the rotating shaft 303. A plurality of shrinking blocks 305 with different inner diameters are fixedly connected in a circular array on the front end surface of the rotating disk 304, and support columns 306 are provided inside the shrinking blocks 305.

[0049] Further, both sides of the rear end surface of the workbench 1 are fixedly connected with third mounting seats 301a, a second bidirectional screw rod 301b is rotatably connected between the third mounting seats 301a, both ends of the second bidirectional screw rod 301b are rotatably passed through the third mounting seats 301a and are fixedly connected with a second hand wheel 301c, and the fifth slider 301 is respectively threadedly sleeved on both sides of the outer wall of the second bidirectional screw rod 301b;

[0050] The rear ends of the support columns 306 are fixedly connected to the fixing rods 306a, the rear ends of the fixing rods 306a penetrate the rotating disk 304 and are threadedly sleeved with fastening nuts 306b, and the rear ends of the support columns 306 and the fastening nuts 306b are respectively attached to the front and rear end surfaces of the rotating disk 304.

[0051] The rest of the structure is the same as that of Example 1.

[0052] The operation process of this embodiment is: start the second drive motor 303b, the output shaft of the second drive motor 303b drives the rotating shaft 303 to rotate through the reducer 303a, so that the rotating shaft 303 drives the rotating disk 304 to rotate, and then the rotating disk 304 drives the shrinking block 305 of the specified inner diameter to be located behind the U-shaped copper tube, which facilitates the shrinking of different diameters of the U-shaped copper tube.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that those skilled in the art can well understand and use the utility model.

Claims

1. An automatic shrinking device for U-shaped copper tubes, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a fixing component (2) for fixing the U-shaped copper tube, and the rear end of the workbench (1) is also provided with a shrinking component (3) for shrinking the U-shaped copper tube; The fixing assembly (2) comprises a first bidirectional screw rod (201) rotatably connected to a top slide groove of the workbench (1), and both ends of the first bidirectional screw rod (201) extend to the outside of the slide groove and are fixedly connected to a first hand wheel (201a), both sides of the outer wall of the first bidirectional screw rod (201) are threadedly sleeved with a first slider (201b), and the top of the first slider (201b) is fixedly connected to a mounting plate (202), the upper surface of the mounting plate (202) is movably connected to a second slider (203), and the top of the second slider (203) is fixedly connected to a fixing plate (204) for fixing a U-shaped copper tube; The shrinking assembly (3) comprises a fifth slider (301) movably connected to both sides of the rear end of the workbench (1), and the rear end surface of the fifth slider (301) is fixedly connected to an L-shaped frame (302), a reducer (303a) is fixedly connected to the rear end surface of the vertical support arm of the L-shaped frame (302), and a second drive motor (303b) is fixedly connected to one side of the reducer (303a), an output shaft of the second drive motor (303b) is fixedly connected to the input end of the reducer (303a), and a rotating shaft (303) is fixedly connected to the output end of the reducer (303a), the front end of the rotating shaft (303) is rotatably connected to the inner front end of the L-shaped frame (302), and a rotating disk (304) is sleeved on the outer wall of the rotating shaft (303), and a plurality of shrinking blocks (305) with different inner diameters are fixedly connected in a circular array on the front end surface of the rotating disk (304), and support columns (306) are arranged inside the shrinking blocks (305).

2. The automatic shrinking device for U-shaped copper tubes according to claim 1 is characterized in that: Both sides of the upper surface of the mounting plate (202) are vertically fixedly connected with convex strips (202a), and the tops of the convex strips (202a) are movably connected to the inside of grooves located on both sides of the bottom of the second sliding block (203), the front end of the upper surface of the mounting plate (202) is fixedly connected to the first driving motor (203b) through the motor frame (203a), and the rear end of the upper surface of the mounting plate (202) is fixedly connected to the first mounting seat (203c), the output shaft of the first driving motor (203b) is fixedly connected to the one-way screw rod (203d), and the rear end of the one-way screw rod (203d) is rotatably connected to the first mounting seat (203c), and the second sliding block (203) is threadedly sleeved on the outer wall of the one-way screw rod (203d).

3. The automatic shrinking device for U-shaped copper tubes according to claim 1, characterized in that: The upper surface of the fixed plate (204) is fixedly connected to a second mounting seat (204a) on both sides, and the second mounting seat (204a) is threaded with a first threaded rod (205a), one end of the first threaded rod (205a) is fixedly connected to a first screw cap (205b), and the other end of the first threaded rod (205a) is fixedly connected to a movable plate (205), and the outer wall of the movable plate (205) on a side away from the first threaded rod (205a) is movably connected to a clamping block (207) via a second mounting frame (206).

4. The automatic shrinking device for U-shaped copper tubes according to claim 3 is characterized in that: A first rubber pad (204b) is bonded into a groove at the center of the upper surface of the fixing plate (204), and a second rubber pad (207c) is bonded to the arc surface of each clamping block (207).

5. The automatic shrinking device for U-shaped copper tubes according to claim 3 is characterized in that: The second mounting frame (206) is fixedly connected to the center position of the outer wall of the movable plate (205) away from the first threaded rod (205a), and the second mounting frame (206) is rotatably connected to the inside of the second mounting frame (206), the top end of the second threaded rod (206a) extends to the upper outside of the second mounting frame (206) and is fixedly connected to the second screw cap (206b), and a fourth slider (207b) is threadedly sleeved on the outer wall of the second threaded rod (206a), and the fourth slider (207b) is located on the outer wall of the second mounting frame (206) and is fixedly connected to the center position of the outer wall of one side of the clamping block (207).

6. The automatic shrinking device for U-shaped copper tubes according to claim 5, characterized in that: The front and rear ends of the outer wall of the movable plate (205) on the side away from the first threaded rod (205a) are fixedly connected to the first installation frame (205c), and the interior of the first installation frame (205c) is fixedly connected to the sliding rod (205d), and the outer wall of the sliding rod (205d) is movably sleeved with a third sliding block (207a), and the outer wall of the third sliding block (207a) on the side outside the first installation frame (205c) is respectively fixedly connected to the front and rear ends of the outer wall of one side of the clamping block (207).

7. The automatic shrinking device for U-shaped copper tubes according to claim 1, characterized in that: Both sides of the rear end surface of the workbench (1) are fixedly connected to third mounting seats (301a), and a second bidirectional screw rod (301b) is rotatably connected between the third mounting seats (301a), both ends of the second bidirectional screw rod (301b) are rotatably passed through the third mounting seat (301a) and are fixedly connected to a second hand wheel (301c), and a fifth slider (301) is respectively threadedly sleeved on both sides of the outer wall of the second bidirectional screw rod (301b).

8. The automatic shrinking device for U-shaped copper tubes according to claim 1, characterized in that: The rear ends of the support columns (306) are fixedly connected to fixing rods (306a), and the rear ends of the fixing rods (306a) pass through the rotating disk (304) and are threadedly sleeved with fixing nuts (306b), and the rear ends of the support columns (306) and the fixing nuts (306b) are respectively fitted onto the front and rear end surfaces of the rotating disk (304).

Images