A thermostatic welding device

Abstract

This invention discloses a hot press welding device, including a frame, a welding station and a welding head mounted on the frame, the welding head positioned directly above the welding station, and comprising a welding plate and a welding block for abutting contact. The welding plate is disposed between the welding station and the welding block, and is connected to a cooling structure via several flexible heat-conducting wires. The device also includes a first control structure for controlling the up-and-down movement of the welding plate and a second control structure for controlling the up-and-down movement of the welding block. The purpose of this invention is to solve the technical problems existing in the prior art and provide a hot press welding device that can prevent deformation of the welding position during the cooling process, thus avoiding affecting the welding effect. It can also prevent impurities from adhering to the welding position of the workpiece. More importantly, during the cooling process, the welding plate will not affect the clamping effect on the welding position due to vibration.

Description

Technical Field

[0001] This invention relates to the field of thermocompression welding technology, and more specifically to a thermocompression welding device. Background Technology

[0002] With the rapid development of manufacturing, users have increasingly higher demands for welding of various components. For example, welding processes are required in the production of communication and electronic products. Commonly used welding methods can be divided into three categories: fusion welding, thermocompression welding, and brazing.

[0003] Hot press welding is mainly completed by hot press welding equipment. Existing hot press welding equipment does not have the function of auxiliary cooling of the workpiece welding position after welding. If air cooling and water cooling are used, impurities are easily adhered to the workpiece welding position. If natural cooling is used, the cooling rate is slow, and the welding position is prone to internal stress expansion due to the loss of pressure, which affects the welding effect. Summary of the Invention

[0004] 1. The technical problem that the invention aims to solve.

[0005] The purpose of this invention is to solve the technical problems existing in the prior art and to provide a hot press welding device that can prevent the workpiece from deforming at the welding position during the cooling process, thus avoiding the welding effect. It can also prevent impurities from adhering to the welding position of the workpiece. More importantly, during the cooling process, the pressure welding sheet will not affect the pressing effect on the welding position due to vibration.

[0006] 2. Technical solution.

[0007] To solve the above problems, the technical solution provided by the present invention is as follows:

[0008] A hot press welding device includes a frame, on which a welding station and a welding head are provided. The welding head is located directly above the welding station. The welding head includes a welding plate and a welding block that abut against each other. The welding plate is located between the welding station and the welding block. The welding plate is connected to a cooling structure through a plurality of flexible heat-conducting wires. The device also includes a first control structure for controlling the up-and-down movement of the welding plate and a second control structure for controlling the up-and-down movement of the welding block.

[0009] Optionally, the first control structure includes a first electric telescopic rod that is connected to the welding plate and the frame at both ends respectively. The welding plate is provided with a movable hole that cooperates with the first electric telescopic rod, and the diameter of the movable hole is larger than the diameter of the first electric telescopic rod.

[0010] Optionally, the second control structure includes a second electrically operated telescopic rod whose two ends are respectively connected to the welding block and the frame.

[0011] Optionally, the cooling structure includes a cooling water tank disposed on the frame, and one end of the flexible heat-conducting wire extends into the cooling water tank and is connected to a cooling head.

[0012] Optionally, the cooling head is provided with several through-type cooling channels.

[0013] Optionally, the flexible heat-conducting wire includes a first connecting segment and a second connecting segment, which are connected by a magnetic attraction structure. The magnetic attraction structure includes a first magnetic attraction part sleeved on the end of the first connecting segment and a second magnetic attraction part sleeved on the end of the second connecting segment.

[0014] Optionally, a sleeve is provided at the connection position of the first connecting segment and the second connecting segment, and the first magnetic attraction part and the second magnetic attraction part are both provided inside the sleeve, and anti-detachment parts are provided at both ends of the sleeve.

[0015] Optionally, the first magnetic attraction part or the second magnetic attraction part is an electromagnet, a spring is provided between the first magnetic attraction part and the second magnetic attraction part, and a receiving groove is provided on the first magnetic attraction part or the second magnetic attraction part for accommodating the spring. The elastic force generated by the spring drives the first magnetic attraction part and the second magnetic attraction part to separate.

[0016] Optionally, the second connecting segment is connected to the pressure welding sheet, and a collar is connected to the second connecting segment. The collar is connected to the frame via a connecting rod, and the portion of the second connecting segment located between the collar and the second magnetic suction part is always in a bent state.

[0017] 3. Beneficial effects.

[0018] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0019] During welding, this thermoforming welding equipment uses the welding table and welding head to press the workpiece together. At the end of welding, the welding block rises and detaches from the welding plate under the control of the second control structure. At this point, the workpiece is held in place by the welding plate. The flexible heat-conducting wire connects the welding plate and the cooling structure to cool the welding plate, thereby cooling the welding position on the workpiece. Because the workpiece is always pressed by the welding plate, the pressing state at the welding position remains consistent before and after welding, preventing deformation of the welding position during cooling that could affect the welding effect. This is achieved through heat transfer via the flexible heat-conducting wire. This method avoids problems such as cracking at the welding position caused by rapid cooling. While increasing the cooling speed of the workpiece, it avoids contact between the cooling medium and the welding position, and prevents impurities from adhering to the welding position of the workpiece. Furthermore, since the pressure welding block detaches from the pressure welding sheet during the cooling process, and the pressure welding sheet is relatively thin, the cooling speed can be further improved. More importantly, during the cooling process, the pressure welding sheet will not affect the clamping effect on the welding position due to vibration. If water cooling or air cooling is used for the pressure welding sheet, the pressure welding sheet will vibrate, thereby affecting the clamping effect on the welding position, resulting in uncontrollable cooling and forming effect of the welding position. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a thermocompression welding device according to an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional schematic diagram of a thermobaric welding device according to an embodiment of the present invention;

[0022] Figure 3 for Figure 2 A partial schematic diagram of point A in the middle;

[0023] 1. Frame; 2. Welding station; 3. Welding head; 4. Welding sheet; 5. Welding block; 6. Flexible heat-conducting wire; 7. First electric telescopic rod; 8. Movable hole; 9. Second electric telescopic rod; 10. Cooling water tank; 11. Cooling head; 12. First connecting section; 13. Second connecting section; 14. First magnetic suction part; 15. Second magnetic suction part; 16. Sleeve; 17. Anti-detachment part; 18. Spring; 19. Receiving groove; 20. Collar; 21. Connecting rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of this invention.

[0025] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in the prior art and will not be elaborated upon here. When a component is perpendicular or approximately perpendicular to another component, it means that the ideal state is perpendicularity, but due to manufacturing and assembly effects, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] In this invention, the terms "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0028] Combined with appendix Figure 1-3 This embodiment of a hot press welding device includes a frame 1, which includes a base, a column, and a top plate. The top plate is connected to the top of the base via the column. The frame 1 is provided with a welding station 2 and a welding head 3. The welding station 2 is mounted on the base of the frame 1, and the welding head 3 is located directly above the welding station 2. The welding head 3 includes a welding plate 4 and a welding block 5 that abut against each other. The welding plate 4 is located between the welding station 2 and the welding block 5. The welding plate 4 is connected to a cooling structure via several flexible heat-conducting wires 6, which are soft copper wires. The device also includes a first control structure for controlling the up-and-down movement of the welding plate 4 and a second control structure for controlling the up-and-down movement of the welding block 5.

[0029] During welding, the welding station 2 and the welding head work together to press the workpiece. At the end of welding, the welding block 5 rises and detaches from the welding plate 4 under the control of the second control structure 5. At this time, the workpiece is pressed down by the welding plate 4. The flexible heat-conducting wire 6 thermally connects the welding plate 4 and the cooling structure to cool the welding plate 4, thereby cooling the welding position of the workpiece. Because the workpiece is always pressed down by the welding plate 4, the pressing state of the welding position is consistent before and after welding, preventing deformation of the welding position during cooling that could affect the welding effect. The flexible heat-conducting wire 6 facilitates heat transfer... This method avoids problems such as cracking at the welding position caused by rapid cooling. While increasing the cooling speed of the workpiece, it avoids contact between the cooling medium and the welding position, and prevents impurities from adhering to the welding position of the workpiece. Furthermore, since the pressure welding block 5 detaches from the pressure welding sheet 4 during the cooling process, and the pressure welding sheet 4 is relatively thin, the cooling speed can be further improved. More importantly, during the cooling process, the pressure welding sheet 4 will not affect the clamping effect on the welding position due to vibration. If the pressure welding sheet 4 is cooled by water or air, the pressure welding sheet 4 will vibrate, thereby affecting the clamping effect on the welding position, resulting in uncontrollable cooling and forming effect of the welding position.

[0030] As an optional embodiment of the present invention, the flexible heat-conducting wire 6 and the cooling structure are simultaneously arranged on multiple sides of the pressure welding sheet 4.

[0031] As an optional embodiment of the present invention, the first control structure includes a first electric telescopic rod 7 connected at both ends to the welding plate 4 and the frame 1 respectively. The first electric telescopic rod 7 is vertically connected to the top plate of the frame 1, and the lower end of the first electric telescopic rod 7 is connected to the welding plate 4. The welding block 5 is provided with a movable hole 8 that cooperates with the first electric telescopic rod 7. The diameter of the movable hole 8 is larger than the diameter of the first electric telescopic rod 7, which can realize the relative movement of the welding block 5 and the welding plate 4, and can also prevent the welding block 5 from rubbing against the first electric telescopic rod 7 during movement, causing the welding plate 4 to vibrate and affect the welding effect.

[0032] As an optional embodiment of the present invention, the second control structure includes a second electric telescopic rod 9 connected at both ends to the pressure welding block 5 and the frame 1 respectively. The second electric telescopic rod 9 is vertically connected to the top plate of the frame 1. The lower end of the first electric telescopic rod 7 is connected to the pressure welding block 5. Since a large external force is required in the initial stage of hot pressure welding, the joint force of the first electric telescopic rod 7 and the second electric telescopic rod 9 can effectively ensure the pressing effect on the workpiece.

[0033] As an optional embodiment of the present invention, one of the second electric telescopic rods 9 is symmetrically arranged on each side of the pressure welding block 5.

[0034] As an optional embodiment of the present invention, the cooling structure includes a cooling water tank 10 disposed on the frame 1. The cooling water tank 10 is filled with cold water and is replaceable. One end of the flexible heat-conducting wire 6 extends into the cooling water tank 10 and is connected to a cooling head 11. The cooling head 11 is immersed in the cold water in the cooling water tank 10. The cold water cools the pressure welding sheet 4 through the cooling head 11 and the flexible heat-conducting wire 6. When the temperature of the cold water is higher than a preset value, new cold water can be added. This method is low in cost and convenient to use.

[0035] As an optional embodiment of the present invention, the cooling water tank 10 is connected to the top plate of the frame 1 to avoid obstructing the workpiece from passing between the pressure welding station 2 and the pressure welding head 3, which can accommodate the processing of large-sized workpieces.

[0036] As an optional solution of the present invention, in order to increase the contact area of ​​the cooling head 11 in cold water and thus improve the heat exchange effect, the cooling head 11 is provided with a plurality of through cooling channels. The cooling head 11 is specifically an aluminum block, which has good thermal conductivity and is not easy to rust in water.

[0037] As an optional embodiment of the present invention, the flexible heat-conducting wire 6 includes a first connecting segment 12 and a second connecting segment 13. The first connecting segment 12 and the second connecting segment 13 are disconnected from each other and connected by a magnetic attraction structure. The magnetic attraction structure includes a first magnetic attraction part 14 sleeved on the end of the first connecting segment 12 and a second magnetic attraction part 15 sleeved on the end of the second connecting segment 13. Both the first magnetic attraction part 14 and the second magnetic attraction part 15 are annular structures. When the first magnetic attraction part 14 and the second magnetic attraction part 15 are magnetically attracted together, the ends of the first connecting segment 12 and the second connecting segment 13 are thermally abutted together. Thus, during the hot press welding process, the first connecting segment 12 and the second connecting segment 13 can be disconnected to prevent a large amount of heat from the welding plate 4 from entering the cooling structure and affecting the hot press welding effect. During the cooling stage, the first connecting segment 12 and the second connecting segment 13 can be reconnected through the first magnetic attraction part 14 and the second magnetic attraction part 15.

[0038] As an optional embodiment of the present invention, thermally conductive silicone grease is provided at the ends of both the first connecting segment 12 and the second connecting segment 1 to improve the heat exchange effect of the first connecting segment 12 and the second connecting segment 1.

[0039] As an optional embodiment of the present invention, a sleeve 16 is fitted at the connection position of the first connecting segment 12 and the second connecting segment 13. The sleeve 16 is connected to the frame 1 or the cooling water tank 10. The first magnetic attraction part 1 and the second magnetic attraction part 15 are both disposed inside the sleeve 16. Both ends of the sleeve 16 are provided with anti-detachment parts 17. The first connecting segment 12 and the second connecting segment 13 can pass through the anti-detachment parts 17. The first magnetic attraction part 1 or the second magnetic attraction part 15 is an electromagnet. A spring 18 is provided between the first magnetic attraction part 1 and the second magnetic attraction part 15. The first magnetic attraction part 1 or the second magnetic attraction part 15 is provided with a receiving groove 19 for accommodating the spring 18. When the electromagnet is energized and generates magnetic attraction, the first magnetic attraction part 1 and the second magnetic attraction part 15 magnetically attract each other. In conjunction with the magnetic force, the spring 18 is compressed and enters the receiving groove 19, thereby ensuring the connection effect at the ends of the first connecting segment 12 and the second connecting segment 13. At this time, the first connecting segment 12 and the second connecting segment 13 contact and exchange heat, resulting in high heat exchange efficiency. When the electromagnet is de-energized, the first magnetic attraction part 1 or the second magnetic attraction part 15 separates under the elastic force of the spring 18, thereby releasing the connection state of the first connecting segment 12 and the second connecting segment 13. At this time, the first connecting segment 12 and the second connecting segment 13 exchange heat through the air inside the sleeve 16, resulting in very low heat exchange efficiency. Through the above structural design, the connection state of the first connecting segment 12 and the second connecting segment 13 can be switched very efficiently, and automated control can be achieved.

[0040] As an optional embodiment of the present invention, the second connecting segment 13 is connected to the pressure welding sheet 4, and a collar 20 is connected to the second connecting segment 13. The collar 20 is connected to the frame 1 through a connecting rod 21, which is a metal rod. The portion of the second connecting segment 13 located between the collar 20 and the second magnetic attraction part 15 is always in a bent state. Because this position is in a bent state, it can buffer the vibration generated at the moment the first magnetic attraction part 1 or the second magnetic attraction part 1 is combined, and minimize the vibration at this position from being transmitted to the pressure welding sheet 4 through the second connecting segment 13, thus affecting the welding position. If this position is in a straight state, it is very easy to transmit the vibration to the other end when vibration occurs at one end.

[0041] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hot press welding device, characterized in that: The device includes a frame on which a welding station and a welding head are mounted. The welding head is positioned directly above the welding station and includes a welding plate and a welding block that abut against each other. The welding plate is positioned between the welding station and the welding block and is connected to a cooling structure via several flexible heat-conducting wires. The device also includes a first control structure for controlling the up-and-down movement of the welding plate and a second control structure for controlling the up-and-down movement of the welding block. The first control structure includes a first electric telescopic rod that is connected to the welding plate and the frame at both ends respectively. The welding plate is provided with a movable hole that cooperates with the first electric telescopic rod. The diameter of the movable hole is larger than the diameter of the first electric telescopic rod. The second control structure includes a second electric telescopic rod whose two ends are respectively connected to the welding block and the frame; The flexible heat-conducting wire includes a first connecting segment and a second connecting segment, which are connected by a magnetic attraction structure. The magnetic attraction structure includes a first magnetic attraction part sleeved on the end of the first connecting segment and a second magnetic attraction part sleeved on the end of the second connecting segment.

2. The hot press welding equipment according to claim 1, characterized in that: The cooling structure includes a cooling water tank mounted on the frame, and one end of the flexible heat-conducting wire extends into the cooling water tank and is connected to a cooling head.

3. The hot press welding equipment according to claim 2, characterized in that: The cooling head is provided with several through-type cooling channels.

4. The hot press welding equipment according to claim 1, characterized in that: A sleeve is fitted at the connection position of the first connecting segment and the second connecting segment. The first magnetic attraction part and the second magnetic attraction part are both located inside the sleeve. Both ends of the sleeve are provided with anti-detachment parts.

5. The hot press welding equipment according to claim 4, characterized in that: The first magnetic attraction part or the second magnetic attraction part is an electromagnet, and a spring is provided between the first magnetic attraction part and the second magnetic attraction part. The first magnetic attraction part or the second magnetic attraction part is provided with a receiving groove for accommodating the spring. The elastic force generated by the spring drives the first magnetic attraction part and the second magnetic attraction part to separate.

6. The hot press welding equipment according to claim 5, characterized in that: The second connecting section is connected to the pressure welding sheet, and a collar is connected to the second connecting section. The collar is connected to the frame through a connecting rod. The part of the second connecting section located between the collar and the second magnetic suction part is always in a bent state.

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