Self-adaptive pressure welding device

Abstract

The invention provides a self-adaptive pressure welding device, and relates to the field of welding equipment. The pressure welding device is used for performing pressure welding on a plate-shaped workpiece to be welded on a bottom plate in the shell; an opening is formed in the upper part of the shell; the pressure welding device comprises a fixing frame provided with a connecting part; the connecting part is used for being connected with the upper part of the shell, and a pressure welding space is formed between the connecting part and the shell; the pressing plate is movably arranged in the fixed frame and is connected with one end of the pressing rod penetrating through the fixed frame; the movable pressing head is slidably arranged at the end, away from the pressing rod, of the fixing frame in a penetrating mode and comprises a plurality of densely-arranged sliding parts; the multiple sliding pieces are connected in a sliding mode and can move in a reciprocating mode in the pressure direction. And the deformation body is arranged between the pressing plate and the movable pressing head, is used for transmitting pressure to the movable pressing head, and can deform under the counter-acting force of any sliding piece. The shape of the pressing head can be adjusted in a self-adaptive mode according to different workpieces to be welded so that the pressing head can be attached to different stress faces, and the device is suitable for the different workpieces to be welded.

Description

Technical Field

[0001] The present invention relates to the field of welding equipment, in particular to an adaptive pressure welding device. Background Art

[0002] In fields that rely on pressure welding technology, such as automotive manufacturing, electronic component packaging, and aerospace, traditional pressure welding devices usually use specific pressure heads to press weld and seal the workpieces to be welded. The key pain points are: Given the irregularities of the workpiece's pressure-bearing surface, such as electrical components with protruding elements at varying positions and heights, a fixed pressure head struggles to effectively adapt to the workpiece, leading to poor welds. Frequently changing pressure heads to accommodate varying workpieces is cumbersome and time-consuming, severely limiting production efficiency. Summary of the Invention

[0003] The object of the present invention is to provide an adaptive pressure welding device, which can adaptively adjust the shape of the pressure head according to different workpieces to be welded to fit different stress surfaces and is suitable for different workpieces to be welded.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: An adaptive pressure welding device is used for pressure welding a plate-shaped workpiece to be welded to a bottom plate inside a shell; the upper portion of the shell is provided with an opening; the pressure welding device comprises: The fixing frame is provided with a connecting portion; the connecting portion is used to connect with the upper portion of the shell, and after the connection, a pressure welding space is formed between the fixing frame and the shell; A pressure plate, movably disposed in the fixed frame and connected to one end of a pressure rod passing through the fixed frame; The movable pressure head is slidably arranged on the end of the fixed frame away from the pressure rod, and includes a plurality of densely arranged sliding parts; the plurality of sliding parts are slidably connected to each other and can move back and forth along the pressure direction; The deformable body is arranged between the pressure plate and the movable pressure head, is used to transmit pressure to the movable pressure head, and can be deformed under the reaction force of any of the sliding members.

[0005] Furthermore, in the present invention, the sliding member is a plate-shaped structure, and a plurality of the sliding members are arranged in a close-fitting manner.

[0006] Furthermore, in the present invention, grooves are respectively provided on both sides of the sliding members along the arrangement direction; the grooves of adjacent sliding members are arranged opposite to each other and enclose a cavity, and an elastic structure is provided in the cavity.

[0007] Furthermore, in the present invention, the elastic structure includes a plurality of second springs arranged along the pressure direction, and first balls are provided between adjacent second springs; the first balls are in rolling contact with the inner wall of the cavity.

[0008] Furthermore, in the present invention, the outer side of the movable pressing head is rollingly connected to the inner wall of the fixed frame via a second ball.

[0009] Furthermore, in the present invention, an outer wall of the compression rod is provided with an external thread and is threadedly connected to the fixing frame.

[0010] Furthermore, in the present invention, a first spring is sleeved on the outside of the pressure rod, and two ends of the first spring are respectively connected to the pressure plate and the inside of the fixing frame.

[0011] Furthermore, in the present invention, the deformable body includes a balloon, which is arranged in the space between the pressure plate and the movable pressure head, and the interior of the balloon is filled with a fluid medium.

[0012] Furthermore, in the present invention, the balloon is made of a high-temperature resistant elastic material.

[0013] Furthermore, in the present invention, the deformable body includes a plurality of granular bodies, and the plurality of granular bodies are filled in the space between the pressing plate and the movable pressing head.

[0014] The present invention has at least the following advantages or beneficial effects: The present invention provides a fixed frame, a pressure plate, a movable pressure head and a deformable body. The fixed frame is used to connect with the shell to form a pressure welding space, and at the same time provides a supporting force for the pressure plate, the movable pressure head and the deformable body; the pressure plate is movably arranged in the fixed frame and is connected with one end of the pressure rod passing through the fixed frame, and the pressure rod is driven to drive the pressure plate to move up and down in the fixed frame, applying a certain pressure to the deformable body and the movable pressure head; the movable pressure head is slidably arranged at the lower end of the fixed frame so that one end is located in the pressure welding space and the other end can directly contact the workpiece to be welded to apply pressure to the workpiece to be welded; by providing the movable pressure head with a plurality of sliding members arranged in parallel, a plurality of The sliding parts are slidably connected to each other and can move back and forth along the pressure direction, that is, the movable pressure head is composed of a plurality of sliding parts that can be displaced and moved up and down; and by setting a deformation body between the movable pressure head and the pressure plate, when the pressure plate moves downward, the pressure can be transmitted to the movable pressure head through the deformation body, thereby transmitting the pressure to the workpiece to be welded. At the same time, due to the irregular surface of the workpiece to be welded, its protruding device can push the sliding part at the corresponding position upward, and the corresponding sliding part moves up to squeeze the deformation body, so that the corresponding position of the deformation body is squeezed and deformed, so that the movable pressure head can adaptively change to a contact surface of corresponding shape according to the irregular force surface. The present application can adaptively adjust the shape of the pressure head according to different workpieces to be welded to fit different force surfaces, is suitable for different workpieces to be welded, and has a simple structure and is easy to manufacture, can save the cost of replacing the pressure head, and improve welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic structural diagram of the adaptive pressure welding device provided in Application Example 1; Figure 2 A schematic diagram of the initial state of pressure welding of the adaptive pressure welding device provided in Example 1 of the application; Figure 3 A schematic diagram of the adaptive pressure welding device provided in Example 1 of the application during pressure welding; Figure 4 A schematic structural diagram of the adaptive pressure welding device provided in Application Example 2; Figure 5 A schematic diagram of the initial state of pressure welding of the adaptive pressure welding device provided in Example 2 of the application; Figure 6 This is a schematic diagram of the adaptive pressure welding device provided in Example 2 of the application during pressure welding.

[0017] Figure markings: 1-shell, 11-pressure welding space, 2-workpiece to be welded, 3-fixed frame, 31-connecting part, 4-pressure plate, 5-pressure rod, 51-first spring, 6-movable pressure head, 61-sliding part, 611-groove, 62-second spring, 63-first ball, 64-second ball, 7-deformation body, 8-solder paste. DETAILED DESCRIPTION Example 1

[0018] Please refer to Figure 1-Figure 3 , which is a schematic structural diagram of an adaptive pressure welding device according to an embodiment of the present invention; The present embodiment provides an adaptive pressure welding device for pressure welding a plate-shaped workpiece 2 to be welded on a bottom plate inside a housing 1. The upper portion of the housing 1 is provided with an opening for mounting and fixing the pressure welding device and for pressure welding the workpiece 2 to be welded. The above-mentioned adaptive pressure welding device includes a fixed frame 3, a pressure plate 4, a movable pressure head 6 and a deformable body 7. The fixed frame 3 is used to support and fix the pressure plate 4, the movable pressure head 6 and the deformable body 7, and is provided with a connecting portion 31 connected to the upper portion of the housing 1. After the connection, a pressure welding space 11 is formed between the housing 1 and the housing 1 for the movable pressure head 6 to move downward and apply pressure. The pressure plate 4 is movably arranged in the fixed frame 3 and is connected to one end of the pressure rod 5 passing through the fixed frame 3. By driving the pressure rod 5, the pressure plate 4 can be driven to move up and down in the fixed frame 3 to apply pressure to the movable pressure head 6 and the deformable body 7 below. The movable pressure head 6 is slidably arranged at the end of the fixed frame 3 away from the pressure rod 5, that is, located in the pressure welding space 11 and close to the workpiece 2 to be welded, and can directly contact the workpiece 2 to be welded and apply pressure to it. The movable pressure head 6 includes a plurality of densely arranged sliding members 61, and the plurality of sliding members 61 are slidably connected to each other and can move back and forth along the pressure direction, that is, the movable pressure head 6 is composed of a plurality of sliding members 61 that can be moved up and down; and a deformation body 7 is provided between the pressure plate 4 and the movable pressure head 6. When the pressure plate 4 is driven to move downward, the pressure plate 4 can transmit the force to the movable pressure head 6 through the deformation body 7. When the movable pressure head 6 moves downward and contacts the irregular force-bearing surface of the workpiece 2 to be welded, its protruding electrical components can squeeze the sliding member 61 at the corresponding position and push it upward. The sliding member 61 moves upward to squeeze the deformation body 7, so that the corresponding position of the deformation body 7 is deformed to offset the corresponding reaction force.

[0019] It can be understood that although the number, position and height of the protruding electrical components on the workpiece 2 to be welded are different, the multiple sliding parts 61 can adaptively fit each electrical component after being displaced up and down by the reaction force, and transfer the pressure to the irregular force-bearing surface of the workpiece 2 to be welded, so that each electrical component and the gaps between the electrical components can be subjected to pressure to balance the pressure distribution, thereby protecting the electrical components from damage. There is no need to customize special pressure welding heads for different workpieces 2 to be welded, nor is there a need to frequently replace the pressure heads, which can save costs and improve efficiency.

[0020] As an example, Figure 1 The fixed frame 3 is a semi-enclosed structure, containing space for accommodating the pressure plate 4, the deformable body 7, and the movable pressure head 6. The pressure rod 5 is disposed on its top, and its bottom is open. A pressure welding space 11 is formed between the fixed frame 3 and the housing 1, allowing the movable pressure head 6 to move. A connecting portion 31 is provided on the edge of the fixed frame 3, through which the fixed frame 3 is removably connected to the upper portion of the housing 1. In this embodiment, the connecting portion 31 utilizes a bolt hole, and the upper end surface of the side plate of the housing 1 is provided with a threaded hole, and the fixed frame 3 and the housing 1 are connected by screws.

[0021] In this embodiment, if Figure 2-Figure 3 The workpiece 2 to be welded is welded to the bottom of the shell 1. Before welding, a layer of solder paste 8 is laid on the bottom of the shell 1, and then the workpiece 2 to be welded is placed on the solder paste 8. During pressure welding, the solder paste 8 melts at high temperature, and under the action of pressure, the workpiece 2 to be welded can be tightly welded in the shell 1.

[0022] As an example, the outer wall of the pressure rod 5 is provided with external threads and is threadedly connected to the fixed frame 3. A handle is provided at the outer end of the pressure rod 5. By rotating the handle, the pressure rod 5 is driven downward, thereby driving the pressure plate 4 downward within the fixed frame 3. It can be understood that the outer side of the pressure plate 4 is in sliding contact with the inner wall of the fixed frame 3. Specifically, a slider, ball bearing, or other structure can be provided to guide it and improve its stability during upward and downward movement.

[0023] To further improve the stability of the pressure plate 4 during movement, a first spring 51 is provided between the pressure plate 4 and the fixed frame 3 and is sleeved onto the outside of the pressure rod 5. The provision of the first spring 51 does not affect the up and down movement of the pressure plate 4, and can also eliminate machining errors in the threaded connection between the pressure rod 5 and the fixed frame 3, thereby preventing thread clearance from causing the pressure rod 5 to wobble, thereby causing the pressure plate 4 to wobble, and thus resulting in unstable pressure on the workpiece 2 to be welded.

[0024] As an example, the above-mentioned sliding member 61 has a plate-like structure, and multiple sliding members 61 are arranged in a close fit to prevent the deformed body 7 above the sliding member 61 from falling from the gap between the multiple sliding members 61, and the lower ends of the multiple sliding members 61 are flat, forming surface contact with the force-bearing surface to avoid damage to electrical components.

[0025] As an example, the sliding members 61 are each provided with grooves 611 on either side of the arrangement direction; the grooves 611 of adjacent sliding members 61 are arranged opposite each other to form a cavity, within which an elastic structure is disposed. By providing an elastic structure between two sliding members 61, any sliding member 61 can be moved upward under pressure and, when the pressure is removed, return to its original position, remaining flush with the remaining sliding members 61, allowing it to be used for a different workpiece 2 to be welded.

[0026] In this embodiment, the elastic structure comprises multiple second springs 62 arranged along the pressure direction. First balls 63 are positioned between adjacent second springs 62. These first balls 63 roll against the inner wall of the cavity. By positioning the balls between adjacent sliding members 61, rolling friction is generated between them, reducing the resistance of sliding friction and, consequently, the impact of pressure.

[0027] As an example, the outer side of the movable ram 6 is in rolling connection with the inner wall of the fixed frame 3 via second balls 64. Specifically, the second balls 64 are in rolling connection with the inner wall of the fixed frame 3 near the end and in the center of the sliding member 61, respectively, where grooves 611 are formed. The provision of balls achieves a rolling connection between the movable ram 6 and the fixed frame 3, increasing its stability during vertical movement while reducing sliding friction.

[0028] As an example, the deformable body 7 comprises a balloon, which is disposed in the space between the pressure plate 4 and the movable pressure head 6 and is filled with a fluid medium. The balloon and the fluid medium form an elastically deformable deformable body 7. When squeezed by the sliding member 61, the body 7 deforms to offset the force of the sliding member 61. Simultaneously, the force of the pressure plate 4 is transmitted to the sliding member 61, thereby continuously applying pressure to the workpiece 2 to be welded.

[0029] The above-mentioned fluid medium can be gas and / or liquid. Preferably, a liquid with high temperature resistance and low heat transfer coefficient can be used, such as silicone oil, which can withstand 250°C for a long time and has good oxidation resistance; perfluoropolyether oil, with a thermal conductivity of 0.06-0.09 W / m·K, can withstand 250°C-300°C for a long time, and has strong inertness.

[0030] Similarly, it is understood that the balloon should be made of a high-temperature resistant elastic material to prevent damage at welding temperatures that could lead to fluid leakage. For example, fluororubber can be used, with a long-term operating temperature of 200°C to 230°C; perfluoroether rubber can be used, with a long-term operating temperature of 280°C to 300°C; and phenyl silicone rubber can also be used, with a long-term operating temperature of 200°C to 230°C. These materials all have excellent elastic properties. Example 2

[0031] Please refer to Figure 4-Figure 6 , which is a schematic structural diagram of the adaptive pressure welding device in this embodiment; the pressure welding device provided in this embodiment is substantially the same as the pressure welding device in Example 1, except that: The deformable body 7 of this embodiment comprises a plurality of particles that fill the space between the pressure plate 4 and the movable pressure head 6. When squeezed by the sliding member 61, particle flow occurs between the particles, allowing them to flow relative to each other, thereby adapting to the squeeze deformation of the sliding member 61. Particle flow refers to the motion relationship between particles, including the static state between particles that are bonded to each other and their shear failure under external forces. It is widely used to simulate the physical and mechanical properties of discrete media.

[0032] In this embodiment, the particles are made of steel balls, which are resistant to high temperatures and wear, can remain stable at the welding temperature, and have a smooth surface with a low coefficient of friction, reducing movement resistance. Furthermore, they are virtually incompressible under high pressure, have excellent volume stability, and are not susceptible to permanent deformation.

[0033] The working principle of the adaptive pressure welding device provided in the embodiment of the present application is as follows: A layer of solder paste 8 is laid on the bottom of the housing 1, and the workpiece 2 to be welded is placed on the solder paste 8. Then, the fixing frame 3 is locked to the top of the housing 1. By turning the handle, the pressure rod 5 moves downward, which drives the pressure plate 4 downward, pushing the deformable body 7 and the movable pressure head 6 downward, so that the movable pressure head 6 fully contacts the load-bearing surface of the workpiece 2 to be welded and applies sufficient pressure. This pressure state can be maintained for a certain period of time to ensure that the workpiece 2 to be welded is stably welded in the housing 1. After the pressure welding is completed, the pressure rod 5 is rotated in the opposite direction to release the force, and the fixing frame 3 can be removed from the housing 1.

[0034] The beneficial effects of the adaptive pressure welding device provided by this embodiment are as follows: The present application solves the problems of poor adaptability of traditional pressure welding devices, the need for frequent replacement of pressure heads, and cumbersome operations through the cooperation between the deformable body 7 and the displaceable sliding part 61, and has the advantages of high adaptability, low cost, and high efficiency.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An adaptive pressure welding device for pressure welding a plate-shaped workpiece to be welded to a bottom plate inside a housing; the upper portion of the housing is provided with an opening; characterized in that, The pressure welding device comprises: The fixing frame is provided with a connecting portion; the connecting portion is used to connect with the upper portion of the shell, and after the connection, a pressure welding space is formed between the fixing frame and the shell; A pressure plate, movably disposed in the fixed frame and connected to one end of a pressure rod passing through the fixed frame; The movable pressure head is slidably arranged on the end of the fixed frame away from the pressure rod, and includes a plurality of densely arranged sliding parts; the plurality of sliding parts are slidably connected to each other and can move back and forth along the pressure direction; The deformable body is arranged between the pressure plate and the movable pressure head, is used to transmit pressure to the movable pressure head, and can be deformed under the reaction force of any of the sliding members.

2. The adaptive pressure welding device according to claim 1, characterized in that The sliding member is in a plate-like structure, and a plurality of the sliding members are arranged in a close-fitting manner.

3. The adaptive pressure welding device according to claim 2, characterized in that: The sliding members are respectively provided with grooves on both sides along the arrangement direction; the grooves of adjacent sliding members are arranged opposite to each other and enclose a cavity, and an elastic structure is provided in the cavity.

4. The adaptive pressure welding device according to claim 3, characterized in that: The elastic structure includes a plurality of second springs arranged along the pressure direction, and first balls are arranged between adjacent second springs; the first balls are in rolling contact with the inner wall of the cavity.

5. The adaptive pressure welding device according to claim 4, characterized in that: The outer side of the movable pressing head is rollingly connected to the inner wall of the fixed frame through a second ball.

6. The adaptive pressure welding device according to claim 1, characterized in that: The outer wall of the pressure rod is provided with an external thread and is threadedly connected to the fixing frame.

7. The adaptive pressure welding device according to claim 6, characterized in that: A first spring is sleeved on the outside of the pressure rod, and two ends of the first spring are respectively connected to the pressure plate and the inside of the fixing frame.

8. The adaptive pressure welding device according to any one of claims 1 to 7, characterized in that: The deformable body includes a balloon, which is arranged in the space between the pressure plate and the movable pressure head, and the interior of the balloon is filled with a fluid medium.

9. The adaptive pressure welding device according to any one of claims 1 to 7, characterized in that: The deformable body includes a plurality of granular bodies, and the plurality of granular bodies are filled in the space between the pressing plate and the movable pressing head.

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