A refrigeration capillary tube welding structure capable of controlling welding insertion depth

Abstract

The utility model relates to refrigeration system technical field especially relates to a kind of refrigeration capillary tube welding structure of adjustable control welding insertion depth, including frame, welding clamping assembly and elevating pipe expanding assembly;Welding clamping assembly includes lower screw rod driving mechanism, lower movable carrier plate and clamping mechanism, lower movable carrier plate has two and is driven by lower screw rod driving mechanism to move towards displacement, and the upper end of lower movable carrier plate is symmetrically equipped with clamping mechanism;Elevating pipe expanding assembly includes elevating push rod, upper screw rod driving mechanism, upper movable carrier plate, reamer and turnover mechanism, and the movable end of elevating push rod is equipped with upper screw rod driving mechanism, and upper movable carrier plate is driven by upper screw rod driving mechanism to displace, and reamer is movably supported in the lower part of upper movable carrier plate, and turnover mechanism is installed in the middle part.The utility model can control welding insertion depth, and can carry out pipe expanding pretreatment to the capillary tube of butt joint before welding, improve welding quality.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration system technology, and in particular to a refrigeration capillary welding structure with adjustable welding insertion depth. Background Technology

[0002] In cold storage refrigeration systems, the precise control of the insertion depth of the capillary tube's welded structure is crucial, directly affecting the refrigerant's flow characteristics and system efficiency. By appropriately controlling the insertion depth, the sealing and strength of the connection between the capillary tube and the piping can be ensured, preventing leaks or abnormal flow resistance caused by excessively deep or shallow welds. An appropriate insertion depth helps create a stable transition zone, reducing refrigerant turbulence and pressure loss at the connection point, thereby maintaining the designed flow rate and pressure drop parameters. Furthermore, depth control prevents deformation or blockage of the capillary tube end during welding, ensuring the accuracy of its throttling function. Consistent insertion depth during welding also facilitates automated production, improving process reliability. Ultimately, this control method optimizes the matching between the capillary tube and the system, extends component life, and provides a fundamental guarantee for the stable operation of the refrigeration system.

[0003] The existing refrigeration capillary welding structure has two shortcomings: firstly, it cannot adjust the welding insertion depth according to requirements; secondly, it cannot perform pre-expansion treatment on the opposing capillary tubes before welding. Therefore, it is necessary to optimize and improve the existing refrigeration capillary welding structure. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide a cooling capillary welding structure with adjustable welding insertion depth.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: A refrigeration capillary welding structure with adjustable welding insertion depth includes a frame, a welding clamping assembly installed at the lower part of the frame, and a lifting tube expansion assembly installed at the upper part of the frame. The welding clamping assembly includes a lower screw drive mechanism, a lower movable carrier plate, and a clamping mechanism. There are two lower movable carrier plates, which are driven by the lower screw drive mechanism to move in opposite directions. The upper end of the lower movable carrier plates is symmetrically equipped with clamping mechanisms for clamping capillary tubes. The lifting tube expanding assembly includes a lifting push rod, an upper lead screw drive mechanism, an upper movable carrier plate, a reamer, and a flipping mechanism. The upper lead screw drive mechanism is installed at the movable end of the lifting push rod. The upper movable carrier plate is driven to move by the upper lead screw drive mechanism. The reamer is movably supported at the lower part of the upper movable carrier plate. A flipping mechanism for driving the reamer to rotate around its own axis is installed in the middle of the upper movable carrier plate.

[0006] Furthermore, in the above-mentioned refrigeration capillary welding structure, the lower lead screw drive mechanism includes a lower lead screw motor, a lower lead screw, a lead screw segment, and a lower guide rod. The output end of the lower lead screw motor is connected to the lower lead screw. The lower lead screw has two lead screw segments with opposite rotation directions. The lower lead screw is provided with movable support by the frame. A lower guide rod is fixed between the two side plates of the frame. A lower movable carrier plate is sleeved on the outer side of the lead screw segment and the lower guide rod.

[0007] Furthermore, in the above-mentioned refrigeration capillary welding structure, the lower movable carrier plate has a first lead screw hole that mates with the lead screw section and a first guide hole that mates with the lower guide rod at its lower part, and the upper part of the lower movable carrier plate has a movable cavity, the bottom surface of which has a sliding groove.

[0008] Furthermore, in the above-mentioned refrigeration capillary welding structure, the clamping mechanism includes a fastening screw and a clamping component. The walls on both sides of the movable cavity are provided with fastening screw holes that cooperate with the fastening screw. The clamping component is composed of a slider, a vertical plate, an arc plate, an anti-detachment groove, and a flexible pressure pad. The slider slides and is restricted to sliding in the groove. An arc plate is connected to the upper side of the slider via the vertical plate. An anti-detachment groove that cooperates with the inner end of the fastening screw is provided on the outer side of the arc plate. A flexible pressure pad is provided on the inner side of the arc plate.

[0009] Furthermore, in the above-mentioned refrigeration capillary welding structure, the upper screw drive mechanism includes a channel plate, a vertical guide rod, an upper screw motor, an upper screw, and an upper guide rod. A vertical guide rod that penetrates the frame is fixed to the outer side of the web of the channel plate. An upper screw motor is installed on the outer side of the channel plate. The output end of the upper screw motor is connected to the upper screw. An upper guide rod is fixed between the two side plates of the channel plate. An upper movable carrier plate is sleeved on the outer side of the upper screw and the upper guide rod.

[0010] Furthermore, in the above-mentioned refrigeration capillary welding structure, the upper part of the upper movable carrier plate is provided with a second lead screw hole that cooperates with the upper lead screw and a second guide hole that cooperates with the upper guide rod. The lower part of the upper movable carrier plate is fixed with a limiting tube outside the hole expander. The outer end of the limiting tube is provided with several inwardly inclined lobes along the circumferential direction.

[0011] Furthermore, in the above-mentioned refrigeration capillary welding structure, the flipping mechanism includes a flipping motor and an anti-slip belt transmission component, and the output shaft of the flipping motor is connected to the central convex shaft of the expander via the anti-slip belt transmission component.

[0012] Furthermore, the above-mentioned refrigeration capillary welding structure also includes a controller, which is connected to the welding clamping assembly and the lifting tube expansion assembly respectively.

[0013] The beneficial effects of this utility model are: 1. Adjustable welding insertion depth: The welding insertion depth of the capillary tube can be precisely adjusted according to actual needs to ensure good refrigerant flow characteristics, improve system efficiency, ensure sealing and strength, avoid leakage or abnormal flow resistance, form a stable transition zone, reduce turbulence and pressure loss, maintain design flow and pressure drop parameters, prevent deformation or blockage of the capillary tube end, ensure the accuracy of throttling function, optimize the matching between the capillary tube and the system, extend component life, and provide a basic guarantee for the stable operation of the refrigeration system.

[0014] 2. Capillary pretreatment before welding: Before welding, the capillary tubes to be joined can be expanded to improve the welding quality.

[0015] 3. Facilitates automated production: Consistent insertion depth facilitates automated production and improves process reliability.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the welding clamping assembly in this utility model; Figure 3 This is a schematic diagram of the clamping mechanism in this utility model; Figure 4 This is a schematic diagram of the clamping component in this utility model; Figure 5 This is a schematic diagram of the lifting tube expansion assembly in this utility model; Figure 6 This is a schematic diagram of the flipping mechanism in this utility model; In the attached diagram, the components represented by each number are as follows: 1-Frame; 2-Welding clamping assembly, 201-Lower lead screw motor, 202-Lower lead screw, 203-Lead screw section, 204-Lower guide rod, 205-Lower movable carrier plate, 206-Fasting screw, 207-Clamping component, 207a-Slider, 207b-Vertical plate, 207c-Arc plate, 207d-Anti-detachment groove, 207e-Flexible pressure pad, 208-Moving cavity, 209-Slide groove; 3-Lifting pipe expansion assembly, 301-Lifting push rod, 302-Slotted plate, 303-Vertical guide rod, 304-Upper screw motor, 305-Upper screw, 306-Upper guide rod, 307-Upper movable carrier plate, 308-Expander, 309-Limiting tube, 310-Tilting motor, 311-Anti-slip belt transmission component; 4-Capillary fittings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-6 As shown, this embodiment provides a refrigeration capillary welding structure with adjustable welding insertion depth, including a frame 1, a welding clamping assembly 2 installed at the lower part of the frame 1, and a lifting tube expansion assembly 3 installed at the upper part of the frame 1.

[0021] In this embodiment, the welding clamping assembly 2 includes a lower screw drive mechanism, a lower movable carrier plate 205, and a clamping mechanism. There are two lower movable carrier plates 205, which are driven by the lower screw drive mechanism to move in opposite directions. The upper end of the lower movable carrier plate 205 is symmetrically equipped with a clamping mechanism for clamping the capillary tube 4.

[0022] In this embodiment, the lower lead screw drive mechanism includes a lower lead screw motor 201, a lower lead screw 202, a lead screw segment 203, and a lower guide rod 204. The output end of the lower lead screw motor 201 is connected to the lower lead screw 202. The lower lead screw 202 has two lead screw segments 203 with opposite rotation directions. The lower lead screw 202 is provided with movable support by the frame 1. The lower guide rod 204 is fixed between the two side plates of the frame 1. A lower movable carrier plate 205 is sleeved on the outer side of the lead screw segment 203 and the lower guide rod 204.

[0023] In this embodiment, the lower movable carrier plate 205 has a first lead screw hole that cooperates with the lead screw section 203 and a first guide hole that cooperates with the lower guide rod 204. The upper part of the lower movable carrier plate 205 has a movable cavity 208, and the bottom surface of the movable cavity 208 has a sliding groove 209.

[0024] In this embodiment, the clamping mechanism includes a fastening screw 206 and a clamping member 207. The walls on both sides of the movable cavity 208 are provided with fastening screw holes that mate with the fastening screw 206. The clamping member 207 consists of a slider 207a, a vertical plate 207b, an arc-shaped plate 207c, an anti-detachment groove 207d, and a flexible pressure pad 207e. The slider 207a is slidably confined within a groove 209. The upper side of the slider 207a is connected to the arc-shaped plate 207c via the vertical plate 207b. The outer side of the arc-shaped plate 207c is provided with an anti-detachment groove that mates with the inner end of the fastening screw 206. The inner side of the arc-shaped plate 207c is provided with a flexible pressure pad 207e.

[0025] In this embodiment, the lifting tube expanding assembly 3 includes a lifting push rod 301, an upper lead screw drive mechanism, an upper movable carrier plate 307, a reamer 308, and a flipping mechanism. The upper lead screw drive mechanism is installed at the movable end of the lifting push rod 301. The upper movable carrier plate 307 is driven to move by the upper lead screw drive mechanism. The reamer 308 is movably supported at the lower part of the upper movable carrier plate 307. A flipping mechanism for driving the reamer 308 to rotate around its own axis is installed at the middle part of the upper movable carrier plate 307.

[0026] In this embodiment, the upper lead screw drive mechanism includes a channel plate 302, a vertical guide rod 303, an upper lead screw motor 304, an upper lead screw 305, and an upper guide rod 306. A vertical guide rod 303 penetrating the frame 1 is fixed to the outer side of the web of the channel plate 302. The upper lead screw motor 304 is installed on the outer side of the channel plate 302. The output end of the upper lead screw motor 304 is connected to the upper lead screw 305. The upper guide rod 306 is fixed between the two side plates of the channel plate 302. An upper movable carrier plate 307 is sleeved on the outer side of the upper lead screw 305 and the upper guide rod 306.

[0027] In this embodiment, the upper movable carrier plate 307 has a second lead screw hole that cooperates with the upper lead screw 305 and a second guide hole that cooperates with the upper guide rod 306. The lower part of the upper movable carrier plate 307 is located outside the hole expander 308 and a limiting tube 309 is fixed. The outer end of the limiting tube 309 is provided with a number of inwardly inclined segments along the circumferential direction. The segments can restore their original shape after deformation during material removal.

[0028] In this embodiment, the flipping mechanism includes a flipping motor 310 and an anti-slip belt drive 311. The output shaft of the flipping motor 310 is connected to the central convex shaft of the hole expander 308 via the anti-slip belt drive 311.

[0029] In this embodiment, a controller is also included, which is connected to the welding clamping assembly 2 and the lifting tube expansion assembly 3 respectively.

[0030] The working principle of this embodiment is as follows: Clamping the capillary tube: The capillary tube 4 to be welded is placed on the clamping mechanism of the welding clamping assembly 2. The lower lead screw motor 201 is started, driving the lower lead screw 202 to rotate. Since the lower lead screw 202 has two lead screw sections 203 with opposite directions of rotation, the two lower movable carrier plates 205 move towards each other along the lead screw sections 203 under the guidance of the lower guide rod 204 until the two clamping mechanisms approach and clamp the capillary tube 4. The specific clamping process is as follows: the fastening screw 206 is rotated, and the inner end of the fastening screw 206 cooperates with the anti-detachment groove on the outer side of the arc plate 207c, pushing the arc plate 207c to move inward. The flexible pressure pad 207e on the inner side of the arc plate 207c presses the capillary tube 4 to achieve reliable clamping. At the same time, the slider 207a slides in the slide groove 209 to play a guiding role.

[0031] Pre-expansion treatment: The controller controls the lifting push rod 301 to lower the upper lead screw drive mechanism to a suitable position. The upper lead screw motor 304 starts, driving the upper lead screw 305 to rotate. Under the guidance of the upper guide rod 306, the upper movable carrier plate 307 moves along the upper lead screw 305, driving the expander 308 to move towards the capillary end that needs expansion. The tilting motor 310 starts, driving the expander 308 to rotate around its own axis through the anti-slip belt transmission component 311, performing expansion treatment on the capillary end. The limiting tube 309 and its inwardly inclined segmented plates at its outer end play a limiting and auxiliary role in expansion. The segmented plates can automatically return to their original shape after deformation during unloading.

[0032] Adjusting the insertion depth and welding: According to the welding requirements, the position of the upper movable carrier plate 307 is precisely adjusted through the upper lead screw drive mechanism, thereby adjusting the position of the expander 308. This controls the relative position of the expanded capillary tube and another capillary tube, achieving precise control of the welding insertion depth. After adjusting the insertion depth, the welding operation is performed to complete the welding of the refrigeration capillary tube. Throughout the process, the controller is connected to the welding clamping assembly 2 and the lifting expander assembly 3 respectively, achieving precise control of each component.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A refrigeration capillary welding structure with adjustable welding insertion depth, characterized in that, Includes a frame, the lower part of which is equipped with a welding clamping assembly, and the upper part of which is equipped with a lifting pipe expansion assembly; The welding clamping assembly includes a lower screw drive mechanism, a lower movable carrier plate, and a clamping mechanism. There are two lower movable carrier plates, which are driven by the lower screw drive mechanism to move in opposite directions. The upper end of the lower movable carrier plates is symmetrically equipped with clamping mechanisms for clamping capillary tubes. The lifting tube expanding assembly includes a lifting push rod, an upper lead screw drive mechanism, an upper movable carrier plate, a reamer, and a flipping mechanism. The upper lead screw drive mechanism is installed at the movable end of the lifting push rod. The upper movable carrier plate is driven to move by the upper lead screw drive mechanism. The reamer is movably supported at the lower part of the upper movable carrier plate. A flipping mechanism for driving the reamer to rotate around its own axis is installed in the middle of the upper movable carrier plate.

2. The adjustable welding insertion depth refrigeration capillary welding structure according to claim 1, characterized in that, The lower lead screw drive mechanism includes a lower lead screw motor, a lower lead screw, lead screw segments, and a lower guide rod. The output end of the lower lead screw motor is connected to the lower lead screw. The lower lead screw has two lead screw segments with opposite rotation directions. The lower lead screw is provided with movable support by the frame. The lower guide rod is fixed between the two side plates of the frame. The lower movable carrier plate is sleeved on the outer side of the lead screw segments and the lower guide rod.

3. The adjustable welding insertion depth refrigeration capillary welding structure according to claim 2, characterized in that, The lower movable carrier plate has a first lead screw hole that mates with the lead screw section and a first guide hole that mates with the lower guide rod at its lower part. The upper part of the lower movable carrier plate has a movable cavity, and the bottom surface of the movable cavity has a sliding groove.

4. The adjustable welding insertion depth refrigeration capillary welding structure according to claim 3, characterized in that, The clamping mechanism includes a fastening screw and a clamping component. The walls on both sides of the movable cavity are provided with fastening screw holes that cooperate with the fastening screw. The clamping component consists of a slider, a vertical plate, an arc plate, an anti-disengagement groove, and a flexible pressure pad. The slider slides and is restricted to sliding in the groove. The upper side of the slider is connected to the arc plate via the vertical plate. The outer side of the arc plate is provided with an anti-disengagement groove that cooperates with the inner end of the fastening screw. The inner side of the arc plate is provided with a flexible pressure pad.

5. The adjustable welding insertion depth refrigeration capillary welding structure according to claim 4, characterized in that, The upper lead screw drive mechanism includes a channel plate, a vertical guide rod, an upper lead screw motor, an upper lead screw, and an upper guide rod. A vertical guide rod that penetrates the frame is fixed to the outer side of the web of the channel plate. An upper lead screw motor is installed on the outer side of the channel plate. The output end of the upper lead screw motor is connected to the upper lead screw. An upper guide rod is fixed between the two side plates of the channel plate. An upper movable carrier plate is sleeved on the outer side of the upper lead screw and the upper guide rod.

6. The adjustable welding insertion depth refrigeration capillary welding structure according to claim 5, characterized in that, The upper movable carrier plate has a second lead screw hole that mates with the upper lead screw and a second guide hole that mates with the upper guide rod. The lower part of the upper movable carrier plate is fixed with a limiting tube on the outside of the hole expander. The outer end of the limiting tube is provided with several inwardly inclined lobes along the circumferential direction.

7. A refrigeration capillary welding structure with adjustable welding insertion depth according to claim 6, characterized in that, The flipping mechanism includes a flipping motor and an anti-slip belt drive component. The output shaft of the flipping motor is connected to the central convex shaft of the hole expander via the anti-slip belt drive component.

8. The adjustable welding insertion depth refrigeration capillary welding structure according to claim 7, characterized in that, It also includes a controller, which is connected to the welding clamping assembly and the lifting tube expansion assembly respectively.

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