Tube expander door plate structure

Abstract

The application discloses a tube expander door plate structure, which comprises a rack, a front door plate, a rear door plate, a front door seat and a front lock plate, and is characterized in that the tube expander door plate structure further comprises a front door frame, a front connecting plate and a rear connecting plate, the front door seat and the front lock plate are arranged at the corresponding end portions of the front connecting plate, lifting guide mechanisms are arranged between the front door frame and the front door seat, between the front door frame and the front lock plate, between the rear connecting plate and the rack, the front door plate and the front connecting plate are connected through a spacing adjusting mechanism, the rear door plate and the rear connecting plate are connected through the spacing adjusting mechanism, the spacing between the front door plate and the front connecting plate and the spacing between the rear door plate and the rear connecting plate can be adjusted, the front connecting plate is rotationally connected with the front door seat, the front connecting plate is locked with the front lock plate through a locking assembly, and the front connecting plate and the rear connecting plate are connected through a cable.

Description

Technical Field

[0001] This invention relates to a tube expander, and more particularly to a door panel structure for a tube expander. Background Technology

[0002] The heat exchanger of an air conditioner is mainly composed of heat transfer tubes and fins. The heat transfer tubes and fins need to be tightly fitted together to ensure good heat conduction. Therefore, after the air conditioner heat transfer tubes and fins are assembled, they need to be expanded by a tube expander to ensure that the heat transfer tubes and fins are tightly fitted together.

[0003] During tube expansion, the heat exchanger is supported at the bottom by a base and clamped at the top by an expansion head mechanism. To prevent shrinkage, both sides of the heat exchanger need to be clamped and fixed by the expansion machine's door panels, which include a front door panel and a corresponding rear door panel. Previously, one end of the front door panel was connected to one end of the rear door panel by a hinge structure, and the hinged end of the rear door panel was fixed to the frame with screws; the other end of the front door panel was locked to the other end of the rear door panel by a locking structure. When a heat exchanger needs to be expanded, the locking structure is first opened, and then the front door panel can be opened by rotating the hinge structure, allowing the heat exchanger to be placed between the front and rear door panels. Then, the front door panel is reset and locked in place by the locking structure, thus clamping the heat exchanger.

[0004] The door panels in the above structure can only clamp heat exchangers of one thickness, and the door panels cannot move up or down. However, heat exchangers come in various lengths. When the heat exchanger is long, multiple door panels are needed to clamp it. When the heat exchanger is short, the extra door panels need to be removed from the frame. Otherwise, when the expansion head mechanism descends to clamp the door panel and expand the tube, it will interfere with and collide with the door panel. However, the door panels are heavy and difficult to remove, which makes the labor intensity high for workers and poses a risk of being hit by the door panels. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a door panel structure for a tube expander.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] The expansion tube machine door panel structure includes a frame, a front door panel, a rear door panel, a front door seat, and a front locking plate. Its distinguishing feature is that it further includes a front door frame, a front connecting plate, and a rear connecting plate. The front door seat and the front locking plate are disposed at corresponding ends of the front connecting plate. Lifting and guiding mechanisms are provided between the front door frame and the front door seat, between the front door frame and the front locking plate, and between the rear connecting plate and the frame. Furthermore, the front door panel and the front connecting plate, as well as the rear door panel and the rear connecting plate, are connected by a spacing adjustment mechanism, thereby allowing adjustment of the spacing between the front door panel and the front connecting plate, and between the rear door panel and the rear connecting plate. The distance is such that the front connecting plate is rotatably connected to the front door seat, the front connecting plate is locked to the front locking plate by a locking assembly, and the front connecting plates and the rear connecting plates are connected by cables. The lifting guide mechanism includes a guide rail fixed on the front door frame, and the front locking plate and the front locking plate are each provided with a slider that cooperates with the corresponding guide rail. The distance adjustment mechanism includes an adjustment shaft fixed to the front door panel, a latch assembly and a support hole provided on the front connecting plate, and the adjustment shaft can extend and retract within the support hole and can be locked by the latch assembly.

[0008] The spacing adjustment mechanism also includes a sliding shaft fixed to the front door panel and a shaft hole provided on the front connecting plate that cooperates with the sliding shaft.

[0009] The locking assembly includes a locking seat and a locking plate hinged to the locking seat. The adjusting shaft is provided with several slots, and the locking plate can be locked into the slots to lock the adjusting shaft.

[0010] The front locking plate is provided with a latch groove. The locking assembly includes a lock box, a sliding hole disposed in the lock box, and a handle hole communicating with the sliding hole. The sliding hole is provided with a locking plate that can engage with the latch groove, and the handle passes through the handle hole and is fixed to the locking plate. The sliding hole is provided with a spring that can make the locking plate pop out.

[0011] The lock box includes a bottom box and a front shell. The bottom box has a sliding groove, and the sliding hole is formed by the sliding groove and the front shell.

[0012] The beneficial effects of this invention are: the height of the front and rear door panels can be adjusted according to the length of the heat exchanger, and the spacing between the front door panel and the front connecting plate, and between the rear door panel and the rear connecting plate can be adjusted through the spacing adjustment mechanism, thereby also realizing the adjustment of the distance between the front and rear door panels and the heat exchanger. Therefore, it can adapt to the thickness of heat exchangers of different specifications. Moreover, the front connecting plate and the rear connecting plate are connected by cables and can be guided by the lifting guide mechanism to descend or rise together, thereby adapting to the height of heat exchangers of different specifications. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a structural view of the entire machine when the front door panel and front connecting plate are locked.

[0015] Figure 2 This is a structural view of the entire machine when the front door panel and front connecting plate are opened;

[0016] Figure 3 This is a structural view of the front door panel and front connecting plate when locked.

[0017] Figure 4 This is a structural view of the front locking plate;

[0018] Figure 5 This is a structural view of the front door panel and the front connecting panel. Detailed Implementation

[0019] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0020] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0021] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0022] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0023] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0024] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0025] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0026] Reference Figure 1 , Figure 2 This invention discloses a door panel structure for a tube expander, including a frame 1, a front door panel 2, a rear door panel (not shown in the figure), a front door seat 3, and a front locking plate 4. It also includes a front door frame 5, a front connecting plate 6, and a rear connecting plate 7. The front door seat 3 and the front locking plate 4 are welded to the corresponding ends of the front connecting plate 6. Lifting guide mechanisms are provided between the front door frame 5 and the front door seat 3, between the front door frame 5 and the front locking plate 4, and between the rear connecting plate 7 and the frame 1. The front door panel 2 and the front connecting plate 6, as well as the rear door panel and the rear connecting plate 7, are connected by a spacing adjustment mechanism, thereby allowing adjustment of the spacing between the front door panel 2 and the front connecting plate 6, and between the rear door panel and the rear connecting plate 7. The front connecting plate 6 and the front door seat 3 are rotatably connected by a round shaft 23. The front door seat 3 has a round shaft hole that mates with the round shaft 23. The above-mentioned rotatable connection is a conventional structural design, so it will not be described in detail. The front connecting plate 6 is locked to the front locking plate 4 by a locking assembly.

[0027] As shown in the figure, a lifting guide mechanism is installed on the inner side of the two door pillars of the front door frame 5, as follows: The lifting guide mechanism includes a guide rail 8 fixed on the door pillar. The front lock plate 4 and the front lock plate 5 are each provided with a slider 9 that cooperates with the corresponding guide rail 8. In this way, the front connecting plate 6 can slide along the guide rail 8 using the slider 9. Of course, the rear connecting plate 7 is directly fixed to the slider 9. The guide rail 8 and the slider 9 are conventional technical components that are purchased from outside, so the specific structure is not described in detail. The front connecting plate (section 6) and the rear connecting plate (section 7) are connected by cables (not shown in the figure) and can be lowered or raised together by a lifting guide mechanism. Lifting requires a power mechanism. In this application, the topmost front and rear connecting plates are connected to the pipe clamping mechanism via cables, allowing all front and rear connecting plates to rise and fall with the movement of the pipe clamping mechanism. The pipe clamping mechanism also needs to rise and fall according to the height of the heat exchanger to clamp the pipes. The pipe clamping mechanism is a structure from older tube expanders. Because this application uses a cable connection, the front and rear connecting plates... The lifting mechanism can easily utilize the pipe clamping mechanism, eliminating the need for an additional power mechanism to lift the front and rear connecting plates. Generally, steel wire ropes or chains are preferred for the cables. The cable end blocks are fixed to the moving base plate of the pipe clamping mechanism with screws. For smoother cable movement, guide tension wheels can be added for adjustment. All front connecting plates 6 are typically connected by two cables, with the plates fixed at equal intervals. Therefore, during lifting, all front connecting plates 6 move as a whole. Furthermore, due to the cable connection, the lowest front connecting plate 6 overlaps after reaching the bottom, and the same applies to the rear connecting plate 7. When the front and rear connecting plates 6 and 7 descend below the base, the spacing adjustment mechanism can reduce the distance between the front door panel 2 and the front connecting plate 6, and between the rear door panel and the rear connecting plate 7, thus misaligning the front and rear door panels with the base and preventing collisions.

[0028] like Figures 3 to 5As shown, the square shape of the front door frame 5 is an additional feature. The increased distance between the heat exchanger 13 and the front door frame 5 provides adjustment space. The spacing adjustment mechanism includes an adjustment shaft 14 fixed to the front door panel 2, a locking assembly on the front connecting plate 6, and a support hole. The adjustment shaft 14 can extend and retract within the support hole and can be locked by the locking assembly. The adjustment shaft 14 slides in conjunction with the support hole, and the locking assembly is installed on the side of the front connecting plate 6 away from the front door panel 2. One end of the adjustment shaft 14 passing through the support hole can be... The locking assembly is secured, specifically by a locking structure comprising a locking seat 15 and a locking plate 16 hinged to the locking seat 15. The adjusting shaft 14 has several slots 17, and the locking plate 16 can engage with these slots to lock the adjusting shaft 14. Therefore, when the adjusting shaft 14 is in the locked position at one end through the support hole, the worker rotates the locking plate 16 to engage one side with the slot 17, allowing the adjusting shaft 14 to extend and retract and be locked. Of course, the above adjustment cannot be arbitrary. The required distance can be adjusted according to the position and number of slots 17 on the adjusting shaft 14. The principle of the spacing adjustment mechanism between the rear door panel and the rear connecting plate 7 is the same as that of the front door panel 2, and therefore will not be described in detail.

[0029] As a further structure, the spacing adjustment mechanism also includes a sliding shaft 18 fixed to the front door panel 2 and a shaft hole on the front connecting plate 6 that mates with the sliding shaft 18. The sliding shaft 18 supports and guides the front door panel 2 to slide more smoothly. Moreover, there can be a large gap between the adjustment shaft 14 and the support hole, and the two do not need to contact each other. This avoids the slot 17 from sometimes getting stuck with the edge of the support hole. Furthermore, the sliding shaft 18 and the shaft hole in this application are connected by a linear bearing, which makes the sliding smoother. And because the slot 17 is provided on the adjustment shaft 14, it is not convenient to assemble the linear bearing.

[0030] As shown in the figure, the front lock plate 4 is provided with a latch groove 19. The latch groove 19 of this application is formed by two square plates and the front lock plate 4. The locking assembly includes a lock box 20, a sliding hole provided in the lock box 20, and a handle hole communicating with the sliding hole. The sliding hole is provided with a lock plate 21 that can engage with the latch groove 19, and the handle 22 passes through the handle hole and is fixed to the lock plate 21. The sliding hole is provided with a spring that can make the lock plate 21 pop out. When the front connecting plate 6 drives the front door panel 2 to close, the guide slope at the end of the lock plate 21 is pressed against the groove wall of the latch groove 19, causing the lock plate 21 to retract into the sliding hole. When the door is closed, the lock plate 21 is pushed out by the spring, thereby locking in the latch groove 19 and locking the front door panel 2 and the front connecting plate 6. For ease of manufacturing and assembly, the lock box 20 includes a bottom box and a front shell. The bottom box is provided with a sliding groove, and the sliding hole is composed of the sliding groove and the front shell. The bottom box and the front shell are locked together by screws.

[0031] The above provides a detailed description of a tube expander door panel structure provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A door panel structure for a tube expander, comprising a frame, a front door panel, a rear door panel, a front door seat, and a front locking plate, characterized in that: It also includes a front door frame, a front connecting plate, and a rear connecting plate. The front door seat and the front locking plate are disposed at corresponding ends of the front connecting plate. Lifting guide mechanisms are provided between the front door frame and the front door seat, between the front door frame and the front locking plate, and between the rear connecting plate and the frame. The front door panel and the front connecting plate, as well as the rear door panel and the rear connecting plate, are connected by a spacing adjustment mechanism, thereby allowing adjustment of the spacing between the front door panel and the front connecting plate, and between the rear door panel and the rear connecting plate. The front connecting plate is rotatably connected to the front door seat. The front connecting plate is locked to the front locking plate by a locking assembly. The front connecting plates and the rear connecting plates are connected by cables. The lifting guide mechanism includes... The guide rail is fixed to the front door frame. The front door seat and the front lock plate are provided with sliders that cooperate with the corresponding guide rails. The spacing adjustment mechanism includes an adjustment shaft fixed to the front door panel, a latch assembly and a support hole set on the front connecting plate. The adjustment shaft can move telescopically within the support hole and can be locked by the latch assembly. The front lock plate is provided with a latch groove. The locking assembly includes a lock box, a sliding hole set in the lock box and a handle hole that passes through the sliding hole. A lock plate that can engage with the latch groove is provided in the sliding hole, and the handle passes through the handle hole and is fixed to the lock plate. A spring that can make the lock plate pop out is provided in the sliding hole.

2. The expansion machine door panel structure according to claim 1, characterized in that: The spacing adjustment mechanism also includes a sliding shaft fixed to the front door panel and a shaft hole provided on the front connecting plate that cooperates with the sliding shaft.

3. The expansion machine door panel structure according to claim 1, characterized in that: The locking assembly includes a locking seat and a locking plate hinged to the locking seat. The adjusting shaft is provided with several slots, and the locking plate can be locked into the slots to lock the adjusting shaft.

4. The expansion machine door panel structure according to claim 1, characterized in that: The lock box includes a bottom box and a front shell. The bottom box has a sliding groove, and the sliding hole is formed by the sliding groove and the front shell.

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