Evaporator winding device

Abstract

The utility model discloses an evaporator winding device which comprises a pipe winding shaft and a pipe pulling assembly, the pipe pulling assembly is provided with a pipe pulling wheel used for making contact with the outer wall of a pre-winding part of a pipe, and the pipe pulling wheel is located on the front side of the axis of the pipe winding shaft; the pipe winding device further comprises a pipe blocking assembly, the pipe blocking assembly is provided with a cantilever, one end of the cantilever is fixedly connected with the pipe winding shaft, the pipe blocking assembly is provided with a positioning screw used for making axial contact with the end face of the head end of a pipe, the positioning screw is installed at the other corresponding end of the cantilever in a screwed connection mode, and the pipe blocking assembly is provided with a pipe blocking tile plate used for blocking the head end of the pipe. And the pipe blocking roofing slate is fixedly connected with the cantilever. According to the evaporator winding device, the length of the straight pipe section at the head end of the evaporator is adjustable, so that the spiral evaporator can be flexibly produced.

Description

Technical Field

[0001] This utility model relates to the field of evaporators in refrigeration systems, and specifically to an evaporator winding device. Background Technology

[0002] Currently, evaporators mainly consist of a tube body, which is used to transport refrigerant. The tube body can be a meandering, flat plate structure or a spiral structure. Existing equipment for winding spiral evaporators can be exemplified by "A coil winding machine" in Chinese Utility Model Patent Publication No. CN217996321U. This winding machine has a fixing device on the drum for fixing one end of the coil. The operator bends the straight tube and inserts one end into the insertion hole to complete the fixing. The coil is wound into shape under the action of the tightening block and the spiral groove. However, some evaporators require a straight tube section at the beginning for connecting to the pipeline, and the length of the straight tube section at the beginning needs to vary according to customer requirements. Existing winding machines lack means to control the length of the straight tube section at the beginning of the spiral structure, so it is necessary to improve them. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an evaporator winding device that makes the length of the straight pipe section at the beginning of the evaporator adjustable.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The evaporator winding device disclosed in this utility model includes a winding shaft and a tube-pushing assembly. The tube-pushing assembly is provided with a tube-pushing wheel for contacting the outer wall of the pre-wound portion of the tube, and the tube-pushing wheel is located in front of the axis of the winding shaft. It also includes a tube-blocking assembly, which is provided with a cantilever. One end of the cantilever is fixedly connected to the winding shaft. The tube-blocking assembly is provided with a positioning screw for axially contacting the end face of the first end of the tube. The positioning screw is screwed onto the other end of the cantilever. The tube-blocking assembly is provided with a tube-blocking plate for blocking the first end of the tube. The tube-blocking plate is fixedly connected to the cantilever.

[0006] Preferably, the cantilever is welded to the tube shaft.

[0007] Preferably, a spiral groove is formed on the tube shaft, and the tube-pulling assembly is provided with a pressure roller for clamping the tube in the spiral groove. The pressure roller is positioned corresponding to the spiral groove and is located behind the tube-pulling roller.

[0008] Preferably, the tube-pulling assembly includes a follower frame, a lifting frame, and a screw. The follower frame is linearly slidably arranged in a direction parallel to the tube axis. The lifting frame is slidably connected to the follower frame. The screw is rotatably connected to the follower frame. The lower part of the screw is screwed to the lifting frame. The tube-pulling wheel and the pressure wheel are rotatably connected to the lower part of the lifting frame.

[0009] Preferably, a handwheel is mounted on the upper end of the screw.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting a pipe baffle assembly with a cantilever, one end of the cantilever is fixedly connected to a pipe shaft, the pipe baffle assembly is provided with a positioning screw for axially contacting the end face of the first end of the pipe, the positioning screw is screwed and installed on the other end of the corresponding cantilever, and the pipe baffle assembly is provided with a pipe baffle plate for blocking the first end of the pipe, the pipe baffle plate is fixedly connected to the cantilever, so that the length of the straight pipe section at the first end of the evaporator is adjustable. Attached Figure Description

[0011] Figure 1 This is a front view structural diagram of the evaporator winding device of this utility model.

[0012] Figure 2 This is a top view of the combination of the winding shaft and the baffle assembly of this utility model.

[0013] Figure 3 This is a right-side view of the combination of the winding shaft and the baffle assembly of this utility model.

[0014] Figure 4 This is a simplified 3D diagram of an evaporator.

[0015] Labeling: 1. Pipe shaft; 11. Spiral groove; 2. Pipe-pulling assembly; 21. Follower frame; 22. Lifting frame; 23. Screw; 24. Handwheel; 221. Pipe-pulling wheel; 222. Pressure wheel; 3. Pipe-blocking assembly; 31. Cantilever; 32. Pipe-blocking plate; 33. Positioning screw; 99. Pipe; 991. First end; 990. First end straight pipe section; 992. Pre-winding section. Detailed Implementation

[0016] The present invention will now be further described with reference to the accompanying drawings.

[0017] The evaporator winding device of this utility model, such as Figures 1 to 3 As shown, the device includes a winding shaft 1 and a tube-pushing assembly 2. The tube-pushing assembly 2 is equipped with a tube-pushing wheel 221 for contacting the outer wall of the pre-wound portion 992 of the tube 99. The tube 99 is an aluminum tube. The tube-pushing wheel 221 is located in front of the axis of the winding shaft 1. The rotation axis of the winding shaft 1 extends in the left-right direction. The evaporator winding device also includes a winding motor, which drives the winding shaft 1 to rotate. Figures 1 to 3As shown, the evaporator winding device of this utility model also includes a tube-blocking assembly 3. The tube-blocking assembly 3 is provided with a cantilever 31. One end of the cantilever 31 is fixedly connected to the winding shaft 1. The tube-blocking assembly 3 is provided with a positioning screw 33 for axially contacting the end face of the first end 991 of the tube 99. In other words, the axis of the positioning screw 33 is approximately along the direction of the axis of the first end 991 of the tube 99. The positioning screw 33 is screwed onto the other end of the cantilever 31. The tube-blocking assembly 3 is provided with a tube-blocking plate 32 for blocking the first end 991 of the tube 99. The tube-blocking plate 32 is arc-shaped. The concave side of the tube-blocking plate 32 is used to contact the first end 991 of the tube 99. The tube-blocking plate 32 is fixedly connected to the cantilever 31. The cantilever 31 is set so that the positioning screw 33 is suspended outside the winding shaft 1.

[0018] The working principle of the evaporator winding device of this utility model is briefly explained below: Figure 1 and Figure 3 As shown, the tube 99, in its straight state, is placed on the spiral shaft 1. At this time, the positioning screw 33 is located on the rear side of the spiral shaft 1, and the tube 99 is inserted into the spiral groove 11 on the spiral shaft 1. Then, the tube 99 is extended backward to the end of the positioning screw 33, and the tube 99 is positioned. Figure 3 As shown, the aforementioned tube-winding motor drives the tube-winding shaft 1 to rotate. The tube-stopping plate 32 pushes the beginning end 991 of the tube 99 to rotate with the tube-winding shaft 1. That is to say, the beginning end 991 of the tube 99 is stationary relative to the tube-winding shaft 1. Since the tube-pushing wheel 221 is located in front of the axis of the tube-winding shaft 1, the tube-pushing wheel 221 abuts against the pre-winding part 992 (the pre-winding part 992 is the part of the tube 99 that is about to be bent). Thus, the tube-pushing wheel 221 relatively pushes the tube 99 to bend due to the rotation of the tube-winding shaft 1. During this process, relatively speaking, during the bending of the tube 99, the tube-stopping plate 32 prevents the tube 99 from swinging upward (in Figure 3 (From a visual perspective) As the tube 99 rotates around the tube axis 1, it is guided to move in a rightward spiral motion by the spiral groove 11, causing the tube 99 to wrap around the spiral groove 11 and form a spiral structure. Afterward, it stops rotating around the tube axis 1. By manually rotating the tube 99, the spiral tube 99 is axially disengaged from the tube axis 1. Due to the structure of the cantilever 31 combined with the tube-blocking plate 32, a section of the tube at the beginning 991 is not spirally bent, thus forming... Figure 4 The shown is the first straight pipe section 990. From... Figure 3As can be seen, because the positioning screw 33 positions the first end 991 of the tube 99 relative to the winding shaft 1, the length of the first straight tube section 990 (or approximately straight tube) of the spiral tube 99 produced by the evaporator winding device is stabilized. When it is necessary to adjust the length of the first straight tube section 990, the positioning screw 33 is rotated so that the end of the positioning screw 33 moves closer to or further away from the winding shaft 1. When the end face of the first end 991 of the tube 99 in the straight tube state is close to the end of the positioning screw 33, the length of the first straight tube section 990 is changed accordingly, so that the spiral evaporator can be produced flexibly.

[0019] Furthermore, the cantilever 31 is welded to the pipe shaft 1, which facilitates a stable relative fixation between the cantilever 31 and the pipe shaft 1. Specifically, as shown... Figure 2 As shown, the welding part of the cantilever 31 and the winding shaft 1 is located on the left side of the spiral groove 11, and the right end of the winding shaft 1 is suspended.

[0020] Furthermore, such as Figure 2 As shown, a spiral groove 11 is formed on the tube shaft 1, such as Figure 3 As shown, the tube-pulling assembly 2 is equipped with a pressure roller 222 for clamping the tube 99 within the spiral groove 11. The pressure roller 222 (in operation) corresponds to the spiral groove 11 and is located behind the tube-pulling roller 221. In other words, the pressure roller 222 contacts the rear end of the pre-wound portion 992. During the winding process, one side of the tube 99 rests against the bottom of the spiral groove 11, and the corresponding other side of the tube 99 rests against the pressure roller 222, preventing the tube 99 from slipping out of the spiral groove 11. This allows the tube 99 to be more effectively guided by the spiral groove 11 and stably bent into a coil shape. Figure 4 The spiral structure shown.

[0021] Furthermore, such as Figure 1As shown, the tube-winding assembly 2 includes a following frame 21, a lifting frame 22, and a screw 23. The following frame 21 is linearly slidable in a direction parallel to the winding shaft 1. For example, the evaporator winding device includes a frame. The following frame 21 is connected to the frame via a corresponding linear guide pair or linear bearing. The lifting frame 22 is slidably connected to the following frame 21. The lifting frame 22 can be connected to the following frame 21 via a corresponding linear guide pair. The screw 23 is rotatably connected to the following frame 21 via a bearing. The lower part of the screw 23 is screwed to the upper part of the lifting frame 22. The tube-winding wheel 221 and the pressure wheel 222 are rotatably connected to the lower part of the lifting frame 22. Thus, rotating the screw 23 can move the tube-winding wheel 221 and the pressure wheel 222 up and down. When an evaporator is wound, the tube-winding wheel 221 and the pressure wheel 222 can be easily moved upward by rotating the screw 23, so that the pressure wheel 222 leaves the evaporator, and the evaporator can be easily removed from the winding shaft 1. The follower frame 21 can be moved left and right manually, or an independent follower motor can be set up to drive the follower frame 21 to move left and right via a ball screw pair. When winding the evaporator, the tube 99 is first placed on the winding shaft 1, and then the tube-pushing wheel 221 and the pressure wheel 222 are moved down into the working position by rotating the screw 23, that is, the pressure wheel 222 is pressed against the tube 99. When the winding shaft 1 rotates, the follower frame 21 moves to the right following the pre-wound part 992 of the tube 99, that is, the pressure wheel 222 is kept pressing on the part of the tube 99 that is entering the spiral groove 11.

[0022] Furthermore, such as Figure 2 As shown, a handwheel 24 is installed at the upper end of the screw 23, so the worker can rotate the screw 23 by turning the handwheel 24, which is convenient for the worker to operate.

Claims

1. An evaporator winding device, comprising a winding shaft (1) and a tube-pushing assembly (2), wherein the tube-pushing assembly (2) is provided with a tube-pushing wheel (221) for contacting the outer wall of a pre-wound portion (992) of a tube (99), the tube-pushing wheel (221) being located in front of the axis of the winding shaft (1), characterized in that: It also includes a pipe baffle assembly (3), which has a cantilever (31). One end of the cantilever (31) is fixedly connected to the pipe shaft (1). The pipe baffle assembly (3) has a positioning screw (33) for axially contacting the end face of the first end (991) of the pipe (99). The positioning screw (33) is screwed onto the other end of the cantilever (31). The pipe baffle assembly (3) has a pipe baffle plate (32) for blocking the first end (991) of the pipe (99). The pipe baffle plate (32) is fixedly connected to the cantilever (31).

2. The evaporator winding device according to claim 1, characterized in that: The cantilever (31) is welded to the tube shaft (1).

3. The evaporator winding device according to claim 1, characterized in that: A spiral groove (11) is formed on the tube shaft (1), and the tube-pulling assembly (2) is provided with a pressure roller (222) for clamping the tube (99) in the spiral groove (11). The pressure roller (222) is positioned corresponding to the spiral groove (11) and is located behind the tube-pulling roller (221).

4. The evaporator winding device according to claim 3, characterized in that: The tube-pulling assembly (2) includes a follower frame (21), a lifting frame (22), and a screw (23). The follower frame (21) is linearly slidably arranged in a direction parallel to the tube axis (1). The lifting frame (22) is slidably connected to the follower frame (21) up and down. The screw (23) is rotatably connected to the follower frame (21). The lower part of the screw (23) is screwed to the lifting frame (22). The tube-pulling wheel (221) and the pressure wheel (222) are rotatably connected to the lower part of the lifting frame (22).

5. The evaporator winding device according to claim 4, characterized in that: A handwheel (24) is installed at the upper end of the screw (23).

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