Clamp for brazing of plate heat exchanger
By designing clamps for vertical plates, upper plates, lower plates, compression sliding mechanisms and cam pressing mechanisms, the problems of low production efficiency and unstable quality during the brazing process of traditional plate heat exchangers are solved, rapid clamping and flexible production are achieved, and product quality and production efficiency are improved.
Patent Information
- Application Number
- CN202422290838.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-19
AI Technical Summary
During the brazing process of traditional plate heat exchangers, the production efficiency is low, the product quality after welding is unstable, the tooling is not flexible, and the clamping method is easy to damage the threads, so the heat exchanger cannot be clamped through the fixed tightening torque.
The clamp design is adopted including a vertical plate, an upper pressure plate, a lower pressure plate, a compression sliding mechanism, a cam compression mechanism and a compression adjustment mechanism. The cam compression mechanism drives the down pressure plate to approach the up pressure plate, achieving quick clamping and positioning, and the compression adjustment mechanism is used for flexible adjustment.
It realizes rapid clamping, improves production efficiency, ensures the stability of product quality after welding, and improves the flexibility of tooling, and is suitable for the production of multiple products on the same platform.
Smart Images
Figure CN223083964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fixture for brazing a plate heat exchanger, belonging to the technical field of fixtures. Background Art
[0002] At present, in the production (including applying brazing filler metal, brazing, etc.) of plate heat exchangers such as plate oil coolers and plate power battery coolers, corresponding fixture products need to be applied.
[0003] In the traditional technology, the method of clamping the heat exchanger with a bolt structure is adopted. When clamping, a wrench is used to tighten the bolt, and a vernier caliper is needed to measure and confirm whether the dimensions of the four corners of the heat exchanger are in place. After brazing, the bolt is disassembled with a wrench. The production efficiency is low, and with the bolt structure at the four corners, the heat exchanger cannot be clamped with a fixed tightening torque, mainly relying on the experience of workers. After tightening, the height differences of the four corners are inconsistent, and the dimensions after welding cannot be guaranteed. In addition, frequent loading and unloading easily damage the threads, and bolts need to be replaced frequently.
[0004] In addition, the method of using a cylinder + clip is adopted. Special assembly clips are developed, and clip slots are added on both sides of the upper and lower pressing heads. First, the heat exchanger is pressed by the cylinder, and then the special assembly clip is used to clamp it. After brazing, the assembly clip is directly disassembled. This scheme requires the development of special assembly clips, and the flexibility of the tooling is not high; during brazing, due to the thermal expansion and contraction of metal parts, the assembly clip may not be easily disassembled.
[0005] In summary, it is necessary to develop a fixture for brazing a plate heat exchanger. Summary of the Utility Model
[0006] Therefore, the utility model provides a fixture for brazing a plate heat exchanger, which solves the problems of low production efficiency, unstable product quality after welding, and low flexibility of tooling existing in the traditional technology.
[0007] In order to achieve the above purpose, the utility model provides the following technical solution: A fixture for brazing a plate heat exchanger includes a vertical plate, an upper pressing plate, a lower pressing plate, a pressing sliding mechanism, a cam pressing mechanism, and a pressing adjustment mechanism;
[0008] One side of the upper part of the vertical plate is connected with the upper pressing plate, the lower pressing plate is located below the upper pressing plate, and the lower pressing plate is connected with the middle part of the vertical plate through the pressing sliding mechanism; an accommodating space is formed between the upper pressing plate and the lower pressing plate;
[0009] The cam pressing mechanism is located below the lower pressing plate, the cam pressing mechanism is connected above the pressing adjustment mechanism, and the pressing adjustment mechanism is connected to the lower part of the vertical plate;
[0010] The cam pressing mechanism drives the lower pressing plate to approach the upper pressing plate through the pressing sliding mechanism to press the brazing object in the accommodating space.
[0011] As a preferred solution for the fixture used in brazing plate heat exchangers, the upper pressing plate is fixed with a pressing working head through counterbore screws, and the pressing working head is located at the upper part of the accommodating space.
[0012] As a preferred solution for the fixture used in brazing plate heat exchangers, a positioning pin or a profiling structure is connected to the upper end of the lower pressing plate at the lower part of the accommodating space.
[0013] As a preferred solution for the fixture used in brazing plate heat exchangers, the vertical plate is formed with a sliding adjustment hole, and one end of the lower pressing plate extends out of the sliding adjustment hole to the outside of the vertical plate;
[0014] The lower pressing plate forms a first shaft mounting seat inside the sliding adjustment hole, and a second shaft mounting seat is formed at the part of the lower pressing plate extending out of the vertical plate.
[0015] As a preferred solution for the fixture used in brazing plate heat exchangers, the pressing sliding mechanism includes a first rotating shaft, a first sliding wheel, a second rotating shaft and a second sliding wheel;
[0016] The first rotating shaft is connected to the first shaft mounting seat, and the first sliding wheel is connected to the first rotating shaft; the second rotating shaft is connected to the second shaft mounting seat, and the second sliding wheel is connected to the second rotating shaft;
[0017] The first sliding wheel and the second sliding wheel are distributed on both sides of the vertical plate.
[0018] As a preferred solution for the fixture used in brazing plate heat exchangers, the cam pressing mechanism includes a first cam mounting seat, a second cam mounting seat, a first turntable, a second turntable, a cam body, a cam rotating shaft, a first handle and a second handle;
[0019] Both the first cam mounting seat and the second cam mounting seat are fixed at the upper end of the pressing adjustment mechanism;
[0020] The first turntable is placed in a first groove on the first cam mounting seat, and the second turntable is placed in a second groove on the second cam mounting seat;
[0021] The cam body is connected to the cam rotating shaft, one end of the cam rotating shaft is connected to the first turntable, and the other end of the cam rotating shaft is connected to the second turntable;
[0022] The first handle is connected to the outside of the first turntable, and the second handle is connected to the outside of the second turntable.
[0023] As a preferred solution for the fixture used in brazing plate heat exchangers, the pressing and adjusting mechanism includes a pressing and adjusting plate. A pressing and adjusting hole is formed on the side of the pressing and adjusting plate, and the pressing and adjusting hole is connected to the lower part of the vertical plate through a fixing bolt.
[0024] As a preferred solution for the fixture used in brazing plate heat exchangers, a lifting support leg is connected to the lower end of the pressing and adjusting plate.
[0025] The utility model has the following advantages: It includes a vertical plate, an upper pressing plate, a lower pressing plate, a pressing sliding mechanism, a cam pressing mechanism and a pressing and adjusting mechanism. One side of the upper part of the vertical plate is connected with the upper pressing plate, the lower pressing plate is located below the upper pressing plate, and the lower pressing plate is connected to the middle part of the vertical plate through the pressing sliding mechanism. A receiving space is formed between the upper pressing plate and the lower pressing plate. The cam pressing mechanism is located below the lower pressing plate, the cam pressing mechanism is connected above the pressing and adjusting mechanism, and the pressing and adjusting mechanism is connected to the lower part of the vertical plate. The cam pressing mechanism drives the lower pressing plate to approach the upper pressing plate through the pressing sliding mechanism to press the brazing object in the receiving space. The utility model has high flexibility and can be applied to the production of multiple products on the same platform. At the same time, it realizes rapid clamping, greatly improving the operation efficiency. The quality stability of the processed products is strong. Description of the Drawings
[0026] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.
[0027] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.
[0028] Figure 1 It is a schematic three-dimensional structure diagram of the first perspective of the fixture for brazing plate heat exchangers provided in the embodiment of the present utility model;
[0029] Figure 2 It is a schematic three-dimensional structure diagram of the second perspective of the fixture for brazing plate heat exchangers provided in the embodiment of the present utility model;
[0030] Figure 3 It is a schematic three-dimensional structure diagram of the third perspective of the fixture for brazing plate heat exchangers provided in the embodiment of the present utility model;
[0031] Figure 4 This is a front view structural schematic diagram of the fixture for brazing plate heat exchangers provided in the embodiments of the present utility model.
[0032] In the figure, 1 is a vertical plate; 2 is an upper pressing plate; 3 is a lower pressing plate; 4 is a pressing sliding mechanism; 5 is a cam pressing mechanism; 6 is a pressing adjustment mechanism; 7 is a receiving space; 8 is a pressing working head; 9 is a sliding adjustment hole; 10 is a first shaft mounting seat; 11 is a second shaft mounting seat; 12 is a first rotating shaft; 13 is a first sliding wheel; 14 is a second rotating shaft; 15 is a second sliding wheel; 16 is a first cam mounting seat; 17 is a second cam mounting seat; 18 is a first turntable; 19 is a second turntable; 20 is a cam body; 21 is a cam rotating shaft; 22 is a first handle; 23 is a second handle; 24 is a pressing adjustment plate; 25 is a fixing bolt; 26 is a lifting support leg; 27 is a pressing adjustment hole. Detailed implementation manners
[0033] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0034] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiments of the present utility model provide a fixture for brazing plate heat exchangers, including a vertical plate 1, an upper pressing plate 2, a lower pressing plate 3, a pressing sliding mechanism 4, a cam pressing mechanism 5 and a pressing adjustment mechanism 6;
[0035] Among them, one side of the upper part of the vertical plate 1 is connected with the upper pressing plate 2, the lower pressing plate 3 is located below the upper pressing plate 2, and the lower pressing plate 3 is connected to the middle part of the vertical plate 1 through the pressing sliding mechanism 4; a receiving space 7 is formed between the upper pressing plate 2 and the lower pressing plate 3;
[0036] Among them, the cam pressing mechanism 5 is located below the lower pressing plate 3, the cam pressing mechanism 5 is connected above the pressing adjustment mechanism 6, and the pressing adjustment mechanism 6 is connected to the lower part of the vertical plate 1;
[0037] Among them, the cam pressing mechanism 5 drives the lower pressing plate 3 to approach the upper pressing plate 2 through the pressing sliding mechanism 4 to press the brazing object in the receiving space 7.
[0038] In this embodiment, the upper pressing plate 2 is fixed with a pressing working head 8 by a countersunk screw, and the pressing working head 8 is located at the upper part of the accommodating space 7; a positioning pin or a profiling structure is connected to the upper end of the lower pressing plate 3 at the lower part of the accommodating space 7.
[0039] Specifically, the pressing working head 8 is fixed to the upper pressing plate 2 by a countersunk screw. When the product changes, is upgraded, is switched, etc., only the pressing working head 8 needs to be replaced to achieve flexible production. Among them, a positioning pin or a profiling structure is installed on the lower pressing plate 3, and the plate heat exchanger in the accommodating space 7 is quickly and accurately positioned through the positioning pin or the profiling structure.
[0040] In this embodiment, the vertical plate 1 is formed with a sliding adjustment hole 9, and one end of the lower pressing plate 3 extends out of the sliding adjustment hole 9 to the outside of the vertical plate 1; a first shaft mounting seat 10 is formed on the inner side of the lower pressing plate 3 in the sliding adjustment hole 9, and a second shaft mounting seat 11 is formed on the part of the lower pressing plate 3 extending out of the vertical plate 1 to the outside; the pressing sliding mechanism 4 includes a first rotating shaft 12, a first sliding wheel 13, a second rotating shaft 14 and a second sliding wheel 15; the first rotating shaft 12 is connected to the first shaft mounting seat 10, and the first sliding wheel 13 is connected to the first rotating shaft 12; the second rotating shaft 14 is connected to the second shaft mounting seat 11, and the second sliding wheel 15 is connected to the second rotating shaft 14; the first sliding wheel 13 and the second sliding wheel 15 are distributed on both sides of the vertical plate 1.
[0041] Specifically, when the lower pressing plate 3 is driven by the cam pressing mechanism 5 to approach the upper pressing plate 2, the pressing sliding mechanism 4 can move relative to the sliding adjustment hole 9. During the movement of the pressing sliding mechanism 4, the first sliding wheel 13 rolls relative to the side wall of the vertical plate 1 through the first rotating shaft 12. At the same time, the second sliding wheel 15 rolls relative to the side wall of the vertical plate 1 through the second rotating shaft 14. That is, it is realized that the lower pressing plate 3 drives the first sliding wheel 13 and the second sliding wheel 15 to roll relative to the vertical plate 1 through the first shaft mounting seat 10 and the second shaft mounting seat 11, and it can ensure that the lower pressing plate 3 slides smoothly up and down along the track of the sliding adjustment hole 9 and cannot move in the left-right, front-back directions.
[0042] In this embodiment, the cam pressing mechanism 5 includes a first cam mounting seat 16, a second cam mounting seat 17, a first turntable 18, a second turntable 19, a cam body 20, a cam rotating shaft 21, a first handle 22 and a second handle 23; the first cam mounting seat 16 and the second cam mounting seat 17 are both fixed to the upper end of the pressing adjustment mechanism 6; the first turntable 18 is placed in the first groove on the first cam mounting seat 16, and the second turntable 19 is placed in the second groove on the second cam mounting seat 17; the cam body 20 is connected to the cam rotating shaft 21, one end of the cam rotating shaft 21 is connected to the first turntable 18, and the other end of the cam rotating shaft 21 is connected to the second turntable 19; the first handle 22 is connected to the outside of the first turntable 18, and the second handle 23 is connected to the outside of the second turntable 19.
[0043] Specifically, by rotating the first handle 22 or the second handle 23, the first turntable 18 or the second turntable 19 drives the cam body 20 to rotate relative to the cam shaft 21, so that the cam body 20 contacts the bottom of the lower pressure plate 3. The upper and lower surfaces of the cam body 20 each have a small plane, the two planes are parallel, and the normal lines are the same straight line. When the cam body 20 rolls to the top dead center, it only bears vertical pressure, so that when it is at the top dead center, there is no sufficient external force, and the cam body 20 no longer rolls, thereby working together with the clamping sliding mechanism 4 to push the lower pressure plate 3 to move upward, thereby achieving the clamping of the plate heat exchanger in the accommodating space 7.
[0044] In this embodiment, the clamping adjustment mechanism 6 includes a clamping adjustment plate 24, a clamping adjustment hole 27 is formed on the side of the clamping adjustment plate 24, and the clamping adjustment hole 27 is connected to the lower part of the vertical plate 1 through a fixing bolt 25; the lower end of the clamping adjustment plate 24 is connected to a lifting support leg 26.
[0045] Specifically, the cam clamping mechanism 5 is fixed on the clamping adjustment mechanism 6, and the clamping adjustment plate 24 of the clamping adjustment mechanism 6 is adjusted up and down by the fixing bolt 25, driving the cam clamping mechanism 5 to adjust up and down to achieve flexible adjustment. When producing products on the same platform, adjustment can be made through the clamping adjustment mechanism 6.
[0046] The use process of this utility model is as follows:
[0047] When in use, first switch the clamping work head 8; adjust the up and down position of the cam clamping mechanism 5 through the clamping adjustment mechanism 6, and the up and down position of the cam clamping mechanism 5 changes to adjust the gap between the upper pressing plate 2 and the lower pressing plate 3; then assemble and position the plate heat exchanger in the accommodating space 7; turn the first handle 22 or the second handle 23 of the cam clamping mechanism 5, and work together with the clamping sliding mechanism 4 to push the lower pressing plate 3 to move vertically upward to a specified distance; the lower pressing plate 3 works together with the upper pressing plate 2 and the clamping work head 8 to achieve the positioning and clamping of the plate heat exchanger. After brazing, turn the clamping work head 8, the lower pressing plate 3 moves vertically downward under the action of gravity, the workpiece is distanced from the clamping work head 8 on the upper pressing plate 2, and the brazed plate heat exchanger is removed.
[0048] In summary, the utility model includes a vertical plate 1, an upper pressing plate 2, a lower pressing plate 3, a pressing sliding mechanism 4, a cam pressing mechanism 5 and a pressing adjustment mechanism 6; an upper pressing plate 2 is connected to one side of the upper part of the vertical plate 1, the lower pressing plate 3 is located below the upper pressing plate 2, and the lower pressing plate 3 is connected to the middle part of the vertical plate 1 through the pressing sliding mechanism 4; a receiving space 7 is formed between the upper pressing plate 2 and the lower pressing plate 3; the cam pressing mechanism 5 is located below the lower pressing plate 3, the cam pressing mechanism 5 is connected above the pressing adjustment mechanism 6, and the pressing adjustment mechanism 6 is connected to the lower part of the vertical plate 1; the cam pressing mechanism 5 drives the lower pressing plate 3 to approach the upper pressing plate 2 through the pressing sliding mechanism 4 to press the brazing object in the receiving space 7. The pressing working head 8 is fixed to the upper pressing plate 2 by a countersunk screw. When the product changes, upgrades, switches, etc., only the pressing working head 8 needs to be replaced to achieve flexible production. Among them, a positioning pin or a profiling structure is installed on the lower pressing plate 3, and the plate heat exchanger in the receiving space 7 is quickly and accurately positioned through the positioning pin or the profiling structure. When the cam pressing mechanism 5 drives the lower pressing plate 3 to approach the upper pressing plate 2, the pressing sliding mechanism 4 can move relative to the sliding adjustment hole 9. During the movement of the pressing sliding mechanism 4, the first sliding wheel 13 rolls relative to the side wall of the vertical plate 1 through the first rotating shaft 12. At the same time, the second sliding wheel 15 rolls relative to the side wall of the vertical plate 1 through the second rotating shaft 14. That is, the lower pressing plate 3 is driven by the first shaft mounting seat 10 and the second shaft mounting seat 11 to drive the first sliding wheel 13 and the second sliding wheel 15 to roll relative to the vertical plate 1, and it can ensure that the lower pressing plate 3 slides smoothly up and down along the track of the sliding adjustment hole 9 and cannot move in the left-right, front-back directions. By rotating the first handle 22 or the second handle 23, the first turntable 18 or the second turntable 19 drives the cam body 20 to rotate relative to the cam rotating shaft 21, so that the cam body 20 contacts the bottom of the lower pressing plate 3. There is a small plane on each of the upper and lower surfaces of the cam body 20, the two planes are parallel, and the normal line is the same straight line. When the cam body 20 rolls to the upper dead center, it only bears the vertical pressure. So that when at the upper dead center and without sufficient external force, the cam body 20 no longer rolls, and thus, together with the pressing sliding mechanism 4, it pushes the lower pressing plate 3 to move upward to realize the pressing of the plate heat exchanger in the receiving space 7. After brazing, rotate the pressing working head 8, and the lower pressing plate 3 moves vertically downward under the action of gravity, and the workpiece is separated from the pressing working head 8 on the upper pressing plate 2, and the brazed plate heat exchanger is taken off. The utility model has high flexibility and can be applied to the production of multiple products on the same platform; at the same time, it realizes quick clamping, greatly improving the operation efficiency; and the quality stability of the processed products is strong.
[0049] In the foregoing, the present utility model has been described in a relatively specific and detailed manner through general descriptions and specific embodiments. It should be understood that based on the technical concept of the present utility model, several conventional adjustments or further innovations can also be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present utility model, the technical solutions obtained through these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present utility model.
Claims
1. A fixture for brazing a plate heat exchanger, characterized in that, It includes a vertical plate (1), an upper pressing plate (2), a lower pressing plate (3), a pressing sliding mechanism (4), a cam pressing mechanism (5) and a pressing adjustment mechanism (6); One side of the upper part of the vertical plate (1) is connected with the upper pressing plate (2), the lower pressing plate (3) is located below the upper pressing plate (2), and the lower pressing plate (3) is connected to the middle part of the vertical plate (1) through the pressing sliding mechanism (4); an accommodating space (7) is formed between the upper pressing plate (2) and the lower pressing plate (3); The cam pressing mechanism (5) is located below the lower pressing plate (3), the cam pressing mechanism (5) is connected above the pressing adjustment mechanism (6), and the pressing adjustment mechanism (6) is connected to the lower part of the vertical plate (1); The cam pressing mechanism (5) drives the lower pressing plate (3) to approach the upper pressing plate (2) through the pressing sliding mechanism (4) to press the brazing object in the accommodating space (7).
2. The fixture for brazing a plate heat exchanger according to claim 1, wherein, The upper pressing plate (2) is fixed with a pressing working head (8) through a counterbore screw, and the pressing working head (8) is located in the upper part of the accommodating space (7).
3. A fixture for brazing a plate heat exchanger according to claim 2, characterized in that, A positioning pin or a profiling structure is connected to the upper end of the lower part of the accommodating space (7) on the lower pressing plate (3).
4. A fixture for brazing a plate heat exchanger according to claim 1, characterized in that, The vertical plate (1) is formed with a sliding adjustment hole (9), and one end of the lower pressing plate (3) extends out of the sliding adjustment hole (9) to the outside of the vertical plate (1); The lower pressing plate (3) forms a first shaft mounting seat (10) inside the sliding adjustment hole (9), and a second shaft mounting seat (11) is formed on the part of the lower pressing plate (3) extending out of the vertical plate (1).
5. The fixture for brazing of a plate heat exchanger according to claim 4, characterized in that, The pressing sliding mechanism (4) includes a first rotating shaft (12), a first sliding wheel (13), a second rotating shaft (14) and a second sliding wheel (15); The first rotating shaft (12) is connected to the first shaft mounting seat (10), and the first sliding wheel (13) is connected to the first rotating shaft (12); the second rotating shaft (14) is connected to the second shaft mounting seat (11), and the second sliding wheel (15) is connected to the second rotating shaft (14); The first sliding wheel (13) and the second sliding wheel (15) are distributed on both sides of the vertical plate (1).
6. A fixture for brazing a plate heat exchanger according to claim 1, characterized in that, The cam pressing mechanism (5) includes a first cam mounting seat (16), a second cam mounting seat (17), a first turntable (18), a second turntable (19), a cam body (20), a cam rotating shaft (21), a first handle (22) and a second handle (23); Both the first cam mounting seat (16) and the second cam mounting seat (17) are fixed to the upper end of the pressing adjustment mechanism (6); The first turntable (18) is placed in a first groove on the first cam mounting seat (16), and the second turntable (19) is placed in a second groove on the second cam mounting seat (17); The cam body (20) is connected to the cam rotating shaft (21), one end of the cam rotating shaft (21) is connected to the first turntable (18), and the other end of the cam rotating shaft (21) is connected to the second turntable (19); The first handle (22) is connected to the outer side of the first turntable (18), and the second handle (23) is connected to the outer side of the second turntable (19).
7. A fixture for brazing a plate heat exchanger according to claim 1, characterized in that, The pressing and adjusting mechanism (6) includes a pressing and adjusting plate (24). A pressing and adjusting hole (27) is formed in the side portion of the pressing and adjusting plate (24), and the pressing and adjusting hole (27) is connected to the lower portion of the vertical plate (1) through a fixing bolt (25).
8. A fixture for brazing a plate heat exchanger according to claim 7, characterized in that, A lifting support leg (26) is connected to the lower end of the pressing and adjusting plate (24).