Pressing assembly and laser welding machine

Abstract

The utility model belongs to the technical field of laser welding, and particularly relates to a laser welding machine, a pressing assembly comprises a pressing plate, a first driving part and a second driving part, the plate face of the pressing plate faces the Z direction, the pressing plate is in driving connection with the first driving part and the second driving part, the first driving part is used for driving the pressing plate to move in the Z direction, and the second driving part is used for driving the pressing plate to move in the Z direction. And the second driving piece is used for driving the pressing plate to move in the X direction, and the pressing plate forms the welding area within the movement range in the X direction. The pressing plate does not need to be replaced for workpieces with different sizes, and when the workpieces are large, the pressing plate can move in the X direction to sequentially press different positions of the workpieces. Therefore, the pressing plate can adapt to welding of workpieces of different sizes, and the situation that materials are pressed unevenly is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of laser welding technology, specifically relating to a clamping component and a laser welding machine. Background Technology

[0002] Galvanometer laser welding is a high-precision, high-efficiency welding technology that combines the precise control of a galvanometer with the high energy density of a laser beam. It is widely used in welding various metallic and non-metallic materials. The working principle of galvanometer laser welding mainly utilizes the reflection and refraction of a vibrating mirror to focus the laser beam onto a single point, achieving the welding purpose. The vibrating mirror system consists of two parts: a vibrating mirror and a scanning mirror. The vibrating mirror generates vibration through the physical deformation of piezoelectric ceramic material, thereby adjusting the reflection angle of the laser beam; while the scanning mirror controls the scanning direction and range of the beam via a motor, ensuring that the laser beam accurately illuminates the welding point.

[0003] The role of the pressure plate in laser welding:

[0004] 1. Clamping and securing the workpiece. One of the main functions of the clamping plate is to clamp and secure the workpiece to be welded. Laser welding requires the workpiece to maintain a stable position and shape during the welding process to avoid welding defects caused by movement or deformation. The clamping plate ensures that the workpiece remains fixed during the welding process by providing a stable clamping force, thereby achieving precise welding.

[0005] 2. Preventing workpiece deformation. During welding, especially when welding thin plates or easily deformable materials, the workpiece may deform due to localized heating and cooling. The function of the pressure plate is to limit the deformation of the workpiece by applying uniform pressure, ensuring that the workpiece remains flat and dimensionally accurate after welding.

[0006] 3. Improved Welding Quality. By clamping and securing the workpiece, the pressure plate helps reduce vibration and movement during the welding process, thereby improving the accuracy and quality of the weld. Stable welding conditions contribute to the formation of uniform, defect-free welds, increasing the strength and durability of the welded joint.

[0007] 4. Improve production efficiency. The use of a clamping plate simplifies pre-welding preparation and reduces the time required for workpiece positioning and fixing. Simultaneously, because the clamping plate provides stable clamping force, it can accelerate welding speed and improve production efficiency.

[0008] 5. Protecting the workpiece surface. The pressure plate also serves to protect the workpiece surface. During welding, if the workpiece is placed directly on an uneven or rough surface, it may be scratched or contaminated. By using a pressure plate, the workpiece can be isolated from the uneven surface, protecting it from damage.

[0009] However, in the existing technology: when clamping workpieces of different sizes, the clamping plate needs to be replaced; secondly, when the workpiece is large, if the workpiece surface is uneven, a large clamping plate pressing on a large workpiece can easily cause uneven pressing. Utility Model Content

[0010] To address the shortcomings of existing technologies, this utility model provides a clamping assembly, which includes a pressure plate, a first driving member, and a second driving member. The surface of the pressure plate is oriented in the Z direction. The pressure plate is driven to move along the Z direction, thereby pressing the workpiece conveyed to the welding zone. The second driving member is used to drive the pressure plate to move along the X direction, and the pressure plate forms a welding zone within its range of motion in the X direction.

[0011] On the other hand, a laser welding machine is provided, comprising a base, a conveying mechanism, a laser component, and a clamping component. The conveying mechanism, laser component, and clamping component are mounted on the base, and their heights increase sequentially in the Z direction. The conveying mechanism is used to transport the workpiece to be welded along the X direction to the clamping component. The clamping component includes a pressure plate, a first driving member, and a second driving member. The pressure plate is drivenly connected to the first driving member and the second driving member, respectively. The second driving member is used to drive the pressure plate to move along the X direction, and the first driving member is used to drive the pressure plate to move along the Z direction to clamp the workpiece. The laser component is used to weld the workpiece under the pressure plate.

[0012] Preferably, the output end of the first driving member is provided with a telescopic rod, the upper end of which is driven to connect to the pressure plate; the clamping assembly further includes a connecting member, the first driving member is disposed on the connecting member, and the second driving member is driven to connect with the connecting member.

[0013] Preferably, the second driving component includes a drive motor, a screw, and a nut. The output end of the drive motor is driven and connected to the screw. The nut is sleeved on the outside of the screw and cooperates with it. When the screw rotates, it drives the nut to move in the X direction. The nut is driven and connected to the pressure plate to drive the pressure plate to move in the X direction.

[0014] Preferably, the pressure plate is installed at the upper end of the output end of the first driving member, and the clamping assembly further includes a connecting member, the first driving member is disposed at the upper end of the connecting member, and the nut is fixedly connected to the lower end of the driving member.

[0015] Preferably, the clamping assembly further includes a guide rail, which is mounted on the base and located outside the nut. The lower surface of the connector away from the nut is slidably connected to the guide rail, and the guide rail causes the nut and connector to move in the X direction.

[0016] Preferably, the pressing assembly further includes a longitudinal limiting member and a horizontal limiting member. The longitudinal limiting member is located below the pressure plate and is used to limit the downward movement of the pressure plate. The horizontal limiting member is disposed at the front and rear ends of the pressure plate and is used to limit the forward and backward movement of the pressure plate.

[0017] Preferably, the laser assembly includes a laser head, which is a galvanometer-type laser head. The laser head is driven by an X-axis slide rail, a Y-axis slide rail, and a Z-axis slide rail. The X-axis slide rail, Y-axis slide rail, and Z-axis slide rail can drive the laser head to move along the X, Y, and Z directions, respectively. A platform is provided on the conveying mechanism. When the conveying mechanism drives the platform to move along the X direction, the height of the platform, the pressure plate, and the laser head in the Z direction increases sequentially.

[0018] Preferably, the laser welding machine further includes a protective shell and a sealing door. The protective shell is mounted on the frame, and the laser assembly is located inside the protective shell. The sealing door opens or closes relative to the protective shell, allowing the protective shell to switch between an open state and a sealed state. The sealing door and the platform are arranged front and rear on the conveying mechanism. Driven by the conveying mechanism, the sealing door and the platform move together in the X direction. When the protective shell is in the open state, the platform can freely enter and exit the protective shell. The conveying mechanism drives the platform to enter and exit the protective shell. When the platform mechanism is outside the protective shell, it is used to place the workpiece. When the laser assembly welds the workpiece on the platform, the protective shell is in a sealed state.

[0019] Preferably, the protective shell is further provided with a shell opening, which is located in the X direction. The shell opening cooperates with the sealing door, and the conveying mechanism can freely enter and exit the protective shell through the shell opening. The sealing door opens or closes relative to the shell opening, allowing the protective shell to switch between an open state and a sealed state. Attached Figure Description

[0020] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.

[0021] Figure 1 A schematic diagram of the structure of the laser welding machine provided in the embodiment;

[0022] Figure 2 This is a schematic diagram of the longitudinal section of a laser welding machine;

[0023] Figure 3 This is a cross-sectional view of a laser welding machine.

[0024] Figure 4 A schematic diagram of the clamping assembly provided in the embodiment;

[0025] Figure 5 for Figure 4 A schematic diagram of the structure after the central clamping component moves forward;

[0026] Figure 6 for Figure 5 A structural schematic diagram of the central clamping assembly from another perspective.

[0027] Reference numerals in the attached drawings: base 100, protective shell 101, sealing door 102, shell opening 103, conveying mechanism 104, laser assembly 105, laser head 106, platform 107, clamping assembly 108, pressure plate 109, first driving component 110, telescopic rod 111, second driving component 112, drive motor 113, screw 114, nut 115, longitudinal limiting component 116, horizontal limiting component 117, guide rail 118, welding area 119, X-axis rail 120, Y-axis rail 121, Z-axis rail 122, connecting component 130. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings.

[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0030] 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. The terminology used in this specification 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.

[0031] Please refer to Figures 1 to 6This utility model provides a laser welding machine, which includes a base 100, a conveying mechanism 104, a laser component 105, and a clamping component 108. The conveying mechanism 104, the laser component 105, and the clamping component 108 are mounted on the base 100. The heights of the conveying mechanism 104, the laser component 105, and the clamping component 108 increase sequentially in the Z direction. The conveying mechanism 104 is used to convey the workpiece to be welded to the clamping component 108 in the X direction. The clamping component 108 includes a pressure plate 109, a first driving member 110, and a second driving member 112. The pressure plate 109 is driven to connect with the first driving member 110 and the second driving member 112. The second driving member 112 is used to drive the pressure plate 109 to move in the X direction, and the first driving member 110 is used to drive the pressure plate 109 to move in the Z direction to clamp the workpiece. The laser component 105 is used to weld the workpiece under the pressure plate 109.

[0032] The workpiece under the welding pressure plate 109 can refer to the entire area of ​​the workpiece to be welded or a portion of the area to be welded. When the workpiece is large, the pressure plate 109 can move in the X direction to sequentially press down different positions on the workpiece. Thus, the pressure plate 109 can accommodate welding workpieces of different sizes and reduce unevenness in the pressure material.

[0033] In another aspect, this utility model provides a pressing assembly 108. The output end of the first driving member 110 of the pressing assembly 108 is provided with a telescopic rod 111, and the upper end of the telescopic rod 111 is driven to connect to the pressure plate 109. The pressing assembly 108 also includes a connector 130. The first driving member 110 is disposed on the connector 130, and the second driving member 112 is driven to connect with the connector 130.

[0034] The X, Y, and Z directions, as shown in the attached diagram, refer to the forward / backward, left / right, and up / down directions, respectively. The first driving component 110 can be a cylinder. The first driving component 110 drives the pressure plate 109 to move up and down via a telescopic rod 111; the second driving component 112 drives the first driving component 110, the telescopic rod 111, and the pressure plate 109 to move forward and backward together via a connecting member 130.

[0035] In a preferred embodiment, the second driving component 112 includes a driving motor 113, a screw 114, and a nut 115. The output end of the driving motor 113 is driven to the screw 114. The nut 115 is sleeved on the outside of the screw 114 and cooperates with it. When the screw 114 rotates, it drives the nut 115 to move in the X direction. The nut 115 is driven to the pressure plate 109 and is used to drive the pressure plate 109 to move in the X direction.

[0036] Please refer to Figures 1 to 6The pressure plate 109 extends along the Y direction, and a welding area 119 is formed within the range of movement of the pressure plate 109 in the X direction. A first driving member 110 is provided at both ends of the pressure plate 109. The first driving member 110 supports and drives the pressure plate 109 to move up and down in the Z direction to clamp the workpiece. A drive motor 113, a screw 114, and a nut 115 are located on the right side of the welding area 119. When the drive motor 113 rotates forward or reverse, it drives the screw 114 to rotate. When the screw 114 rotates, it drives the nut 115 to move in the X direction. The nut 115 is connected to a connecting member 130, and the first driving member 110 and the pressure plate 109 move in the X direction through the connecting member 130. Guide rails 118 are also provided on the left and right sides of the welding area 119. The guide rails 118 are slidably connected to the lower surfaces of the first driving member 110 and the pressure plate 109 respectively and cooperate with the two to play a guiding and limiting role.

[0037] In a preferred embodiment, the pressure plate 109 is installed on the upper end of the output end of the first drive member 110, and the clamping assembly 108 further includes a connector 130. The first drive member 110 is disposed on the upper end of the connector 130, and the nut 115 is fixedly connected to the lower end driven by the connector 130.

[0038] Nut 115 drives connector 130, first drive member 110 and pressure plate 109 to move together in the X direction.

[0039] In a preferred embodiment, the clamping assembly 108 further includes a guide rail 118, which is mounted on the base 100 and located outside the nut 115. The lower surface of the connector 130 at the end away from the nut 115 is slidably connected to the guide rail 118, and the guide rail 118 causes the nut 115 and the connector 130 to move in the X direction.

[0040] The guide rail 118 serves as a guide and limiter. When the screw 114 rotates, the nut 115 is limited by the connector 130 and the guide rail 118, preventing the nut 115 from rotating and allowing the connector 130 to move along the X direction. "Outside the nut 115" refers to the side furthest from the center of the welding area 119.

[0041] In a preferred embodiment, the pressing assembly 108 further includes a longitudinal limiting member 116 and a horizontal limiting member 117. The longitudinal limiting member 116 is located below the pressure plate 109 and is used to limit the downward movement of the pressure plate 109. The horizontal limiting member 117 is disposed at both ends of the pressure plate 109 and is used to limit the forward and backward movement of the pressure plate 109.

[0042] The longitudinal limiting member 116 can be an existing limit switch or photoelectric sensor switch, etc. The horizontal limiting member 117 is preferably a limiting block set at the front and rear ends of the guide slide rail 118 to limit the movement distance of the nut 115 in the X direction, so as to limit the movement distance of the pressure plate 109.

[0043] In a preferred embodiment, the laser assembly 105 includes a laser head 106, which is a galvanometer-type laser head 106. The laser head 106 is driven by an X-axis slide rail 120, a Y-axis slide rail 121, and a Z-axis slide rail 122. The X-axis slide rail 120, the Y-axis slide rail 121, and the Z-axis slide rail 122 can respectively drive the laser head 106 to move along the X, Y, and Z directions. A platform 107 is provided on the conveying mechanism 104. When the conveying mechanism 104 drives the platform 107 to move along the X direction, the platform 107, the pressure plate 109, and the laser head 106 are raised sequentially in the Z direction.

[0044] The pressure plate 109 is positioned above the stage 107, and the laser head 106 is positioned above the pressure plate 109. The stage 107 can hold the workpiece. The X-axis slide rail 120, Y-axis slide rail 121, and Z-axis slide rail 122 are existing technologies. The laser head 106 can move along the X, Y, and Z directions, and in conjunction with the pressure plate 109, it can move along the X and Z directions, making workpiece welding processing more flexible, adaptable to a wider variety of workpieces, and eliminating the need to change the pressure plate 109 when processing different types of workpieces. The conveying mechanism 104 can use an existing telescopic cylinder, with the output lever of the telescopic cylinder connected to the stage 107 to drive the stage 107 to move along the X direction; alternatively, the conveying mechanism 104 can use an existing electric slide rail with linear telescopic motion to drive the stage 107 to move along the X direction.

[0045] In a preferred embodiment, the laser welding machine further includes a protective shell 101 and a sealing door 102. The protective shell 101 is mounted on the frame, and the laser assembly 105 is located inside the protective shell 101. The sealing door 102 opens or closes relative to the protective shell 101, allowing the protective shell 101 to switch between an open state and a sealed state. The sealing door 102 and the platform 107 are arranged front and rear on the conveying mechanism 104. Driven by the conveying mechanism 104, the sealing door 102 and the platform 107 move together in the X direction. When the protective shell 101 is in the open state, the platform 107 can freely enter and exit the protective shell 101. The conveying mechanism 104 drives the platform 107 to enter and exit the protective shell 101. When the platform 107 is located outside the protective shell 101, it is used to place the workpiece. When the laser assembly 105 welds the workpiece on the platform 107, the protective shell 101 is in a sealed state.

[0046] In a preferred embodiment, the sealing door 102 and the platform 107 are both driven and connected to the same drive mechanism, maintaining a linked state. Driven by the conveying mechanism 104, the platform 107 moves from outside the protective shell 101 into the protective shell 101, causing the sealing door 102 to close the protective shell 101, thus sealing it. Alternatively, driven by the drive mechanism, the protective shell 101 opens, and the platform 107 moves from inside the protective shell 101 to outside. This arrangement facilitates material loading, maintains the original sealing structure of the protective shell 101, ensures operator safety, and eliminates the need for additional protective light curtains. The linked state between the sealing door 102 and the platform 107 correlates the open and sealed states of the protective shell 101 with the conveying state of the platform 107, optimizing the welding machine's processes and improving welding efficiency.

[0047] In a preferred embodiment, the protective shell 101 is further provided with a shell opening 103, which is located in the X direction. The shell opening 103 cooperates with the sealing door 102, and the conveying mechanism 104 can freely enter and exit the protective shell 101 through the shell opening 103. The sealing door 102 opens or closes relative to the shell opening 103, so that the protective shell 101 can switch between an open state and a sealed state.

[0048] In use, the workpiece to be welded is placed on the platform 107. The conveying mechanism 104 moves the platform 107 and the sealing door 102 into the protective shell 101. The sealing door 102 closes the shell opening 103. The platform 107 moves to the welding area 119, and welding can begin. The pressure plate 109, driven by the first driving member 110, can press the workpiece. The laser head 106 can perform welding operations on the corresponding part of the workpiece under the pressure plate 109. The pressure plate 109, driven by the second driving member 112, can move along the X direction to press the workpiece at different positions. This invention eliminates the need to change the pressure plate for workpieces of different sizes, enabling a small pressure plate 109 to press and weld large workpieces, reducing unevenness in the pressing material, and saving time.

[0049] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A clamping assembly, characterized in that, The clamping assembly includes a pressure plate, a first driving member, and a second driving member. The surface of the pressure plate is oriented in the Z direction. The pressure plate is driven to connect with the first driving member and the second driving member. The first driving member is used to drive the pressure plate to move in the Z direction, so that the pressure plate presses the workpiece conveyed to the welding area. The second driving member is used to drive the pressure plate to move in the X direction. The pressure plate forms a welding area within its range of motion in the X direction.

2. A laser welding machine, characterized in that, The laser welding machine includes a base, a conveying mechanism, a laser component, and a clamping component as described in claim 1. The conveying mechanism, the laser component, and the clamping component are disposed on the base. The heights of the conveying mechanism, the laser component, and the clamping component increase sequentially in the Z direction. The conveying mechanism is used to transport the workpiece to be welded to the welding area along the X direction. The laser component is used to weld the workpiece under the pressure plate.

3. The laser welding machine as described in claim 2, characterized in that, The output end of the first driving member is provided with a telescopic rod, the upper end of which is driven to connect to the pressure plate; the clamping assembly also includes a connecting member, the first driving member is disposed on the connecting member, and the second driving member is driven to connect with the connecting member.

4. The laser welding machine as described in claim 2, characterized in that, The second driving component includes a drive motor, a screw, and a nut. The output end of the drive motor is driven and connected to the screw. The nut is sleeved on the outside of the screw and cooperates with it. When the screw rotates, it drives the nut to move in the X direction. The nut is driven and connected to the pressure plate to drive the pressure plate to move in the X direction.

5. The laser welding machine as described in claim 4, characterized in that, The pressure plate is installed on the upper end of the output end of the first driving member. The clamping assembly also includes a connector. The first driving member is disposed on the upper end of the connector. The nut is fixedly connected to the lower end of the connector.

6. The laser welding machine as described in claim 5, characterized in that, The clamping assembly also includes a guide rail, which is mounted on the base and located outside the nut. The lower surface of the connector away from the nut is slidably connected to the guide rail, and the guide rail causes the nut and connector to move in the X direction.

7. The laser welding machine as described in claim 2, characterized in that, The clamping assembly further includes a longitudinal limiting member and a horizontal limiting member. The longitudinal limiting member is located below the pressure plate and is used to limit the downward movement of the pressure plate. The horizontal limiting member is located at the front and rear ends of the pressure plate and is used to limit the forward and backward movement of the pressure plate.

8. The laser welding machine as described in claim 2, characterized in that, The laser assembly includes a laser head, which is a galvanometer-type laser head. The laser head is driven by an X-axis slide rail, a Y-axis slide rail, and a Z-axis slide rail. The X-axis slide rail, Y-axis slide rail, and Z-axis slide rail can drive the laser head to move along the X-direction, Y-direction, and Z-direction, respectively. A platform is provided on the conveying mechanism. The platform is driven by the conveying mechanism to move along the X-direction. The height of the platform, the pressure plate, and the laser head in the Z-direction increases sequentially.

9. The laser welding machine as described in claim 2, characterized in that, The laser welding machine also includes a protective shell and a sealing door. The protective shell is mounted on the frame, and the laser assembly is located inside the protective shell. The sealing door opens or closes relative to the protective shell, allowing the protective shell to switch between an open and sealed state. The conveying mechanism has a sealing door and a platform positioned at the front and back. Driven by the conveying mechanism, the sealing door and the platform move together in the X direction. When the protective shell is in the open state, the platform can freely enter and exit the protective shell. The conveying mechanism drives the platform to enter and exit the protective shell. When the platform is outside the protective shell, it is used to place the workpiece. When the laser assembly welds the workpiece on the platform, the protective shell is in a sealed state.

10. The laser welding machine as described in claim 9, characterized in that, The protective shell is also provided with a shell opening, which is located in the X direction. The shell opening cooperates with the sealing door, and the conveying mechanism can freely enter and exit the protective shell through the shell opening. The sealing door opens or closes relative to the shell opening, so that the protective shell can switch between an open state and a sealed state.

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