A welding head adjustment seat and welding device

Abstract

This application provides an adjusting seat for a welding head and a welding device, belonging to the technical field of welding devices. The adjusting seat includes a central seat and two movable seats. A linear adjustment structure is provided between the central seat and the two movable seats. The linear adjustment structure includes an adjusting screw, a slider, a sliding groove, a locking block, and a locking bolt. The slider is located on the central seat, and the sliding groove is located on the corresponding movable seat. The slider has an adjusting hole adapted to the adjusting screw, and sliding grooves are provided at both ends of the adjusting hole. The adjusting screw has two push blocks, which are respectively connected to the two ends of the corresponding movable seat. The two push blocks slide and cooperate with the corresponding sliding grooves. The locking bolt is threaded to the movable seat, and its tail is connected to the locking block. The welding head adjusting seat of this utility model can not only achieve high-precision two-dimensional position adjustment, effectively solving the problems of insufficient adjustment accuracy and inconvenient operation in the prior art, but also avoids the disadvantages of complex translation module structure and high cost.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to an adjustment seat for a welding head and a welding device. Background Technology

[0002] Welding technology is an indispensable part of modern industrial production, especially in the field of precision manufacturing, where the requirements for welding quality and efficiency are constantly increasing. As the core component of welding equipment, the precise adjustment of the welding head directly affects the welding accuracy and the quality of the final product. However, existing welding head adjustment devices generally have some limitations.

[0003] Currently, in traditional welding equipment, the adjusting seat of the welding head typically consists of a central seat and two movable seats. These two movable seats slide along the X and Y axes, respectively, on the upper and lower end faces of the central seat. After adjustment, the movable seats and the central seat are usually locked together using pressure screws. While this design allows for basic two-dimensional position adjustment, in practice, its adjustment accuracy often falls short of the requirements for high-precision welding. Furthermore, this adjustment method is relatively inconvenient, requiring repeated manual trials and adjustments, which is time-consuming and labor-intensive.

[0004] Another common type of adjustment unit uses a translation module. Translation modules typically offer relatively high adjustment accuracy, but they are complex in structure and have a high manufacturing cost.

[0005] In summary, existing welding head adjustment devices struggle to achieve a balance between adjustment accuracy, ease of operation, and cost-effectiveness. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide an adjustment seat for a welding head and a welding device.

[0007] The technical solution adopted by this utility model is as follows: In the first aspect, this application provides an adjustment seat for a welding head, including a middle seat and two movable seats. A linear adjustment structure is respectively provided between the middle seat and the two movable seats. One of the two linear adjustment structures is arranged along the X-axis direction and the other is arranged along the Y-axis direction. The linear adjustment structure includes an adjustment screw, a slider part, a sliding groove part, a locking block and a locking bolt. The slider part is arranged on the middle seat, and the sliding groove part is arranged on the corresponding movable seat. The slider part is provided with an adjustment hole adapted to the adjustment screw, and a sliding groove is provided at both ends of the adjustment hole. The adjustment screw is provided with two push blocks, which are respectively connected to the two ends of the corresponding movable seat. The two push blocks slide and cooperate with the corresponding sliding groove. By rotating the adjustment screw, the position of the corresponding movable seat relative to the middle seat is adjusted in the corresponding direction. The locking bolt is threaded to the movable seat, and its tail is connected to the locking block to drive the locking block to press against the slider part, thereby locking and fixing the movable seat and the middle seat.

[0008] In some embodiments, the locking bolt is arranged perpendicular to the moving direction of the movable seat, the movable seat is provided with a mounting groove communicating with the sliding groove, the locking block is slidably disposed in the mounting groove toward the corresponding slider, and includes a plane for abutting against the slider, the locking block is provided with a T-shaped through groove vertically, and the end of the locking bolt is provided with a T-shaped post adapted to the T-shaped through groove.

[0009] In some embodiments, the locking blocks and locking bolts are two sets, and are spaced apart on the same side of the movable seat.

[0010] In some embodiments, the adjusting screw is screwed into the adjusting hole, and the two push blocks are fixed to the adjusting screw at intervals via bearings and move synchronously with it.

[0011] In some embodiments, the adjusting screw is rotatably mounted in the adjusting hole via a bearing, and the two push blocks are helically engaged with the adjusting screw.

[0012] In some embodiments, one end of the adjusting screw extends out of the middle seat and is provided with a rotating disk. The outer peripheral wall of the rotating disk is provided with resistance grooves, and its end is provided with an operating hole. The movable seat is provided with a positioning groove adapted to the push block, and the push block is fixed to the positioning groove by bolts.

[0013] Secondly, this application provides a welding device, including a frame, an upper welding head and a lower welding head, and also including an adjustment seat for the welding head and a drive mechanism. The drive mechanism is used to drive the upper welding head to move up and down and to precisely control the downward pressure of the upper welding head. It includes a servo motor, a lifting transmission assembly and a pressure sensor. The servo motor is connected to the pressure sensor and the upper welding head through the lifting transmission assembly.

[0014] In some embodiments, the lifting transmission assembly includes a coupling, a lead screw, a bearing housing, a nut sleeve, a kit, a rod, a slide rail, a first base and a second base. The output shaft of the servo motor is connected to the lead screw via the coupling. The upper end of the lead screw is rotatably mounted on the frame via the bearing housing, and its lower end is rotatably mounted on the first base. The nut sleeve is mounted on the first base and screw-fitted with the lead screw. The second base has an opening for the kit to pass through. The upper end of the kit is connected to the first base, and its lower end face has a slide rail along its axial direction. The upper end of the rod is slidably mounted on the slide rail, and its lower end forms a cam connected to a pressure sensor. A compression spring is mounted on its outer sleeve, and the compression spring abuts against the lower end of the kit and the cam. The slide rail is mounted on the frame along the Z-axis. Both the first base and the second base are connected by a slider and the slide rail.

[0015] In some embodiments, the upper welding head includes a fixed seat, a fixed block, a sleeve, a flow channel tube, and a welding head. The adjusting seat is disposed between the second seat body and the fixed seat. The fixed seat and the fixed block are connected by bolts and form a clamping hole. The sleeve is fixed in the clamping hole. The fixed seat is provided with an inlet connector and an outlet connector. It is provided with a first flow channel communicating with the inlet connector and a second flow channel communicating with the outlet connector. The welding head is provided with a cooling flow channel. The upper end of the flow channel tube is connected to the first flow channel, and its lower end extends into the cooling flow channel and connects the first flow channel and the cooling flow channel. The cooling flow channel and the inner channel of the sleeve are connected to the second flow channel. The inner diameter of the inner channel of the sleeve is larger than the outer diameter of the flow channel tube.

[0016] In some embodiments, the inner channel of the sleeve includes a first channel and a second channel, the inner wall of the second channel is an inner oblique cone surface, the upper end of the welding head is provided with an outer oblique cone surface adapted to the inner oblique cone surface, and the lower end of the flow channel is provided with an oblique cut surface, the oblique cut surface being inclined upward on the side near the outlet connector.

[0017] The beneficial effects of this utility model are as follows: The welding head adjustment seat of this utility model can not only achieve high-precision two-dimensional position adjustment, effectively solving the problems of insufficient adjustment accuracy and inconvenient operation in the prior art, but also avoids the disadvantages of complex structure and high cost of translation module. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0019] Figure 1This is a schematic diagram of an adjustment seat for a welding head according to the present invention; Figure 2 This is an exploded view of an adjustment seat for a welding head according to this utility model; Figure 3 This is a cross-sectional view of an adjustment seat for a welding head according to the present invention. Figure 1 ; Figure 4 This is a cross-sectional view of an adjustment seat for a welding head according to the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the welding device in this utility model; Figure 6 This is a partial schematic diagram of the welding device in this utility model; Figure 7 This is a partial cross-sectional view of the welding device in this utility model. Figure 1 ; Figure 8 This is a partial cross-sectional view of the welding device in this utility model. Figure 2 ; Figure 9 This is an exploded view of the upper welding head in this utility model; Figure 10 This is a schematic diagram of the upper welding head in this utility model; Figure 11 This is a cross-sectional view of the upper welding head in this utility model. Detailed Implementation

[0020] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] It should be noted that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0023] It should be noted that the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0024] It should be noted that the terms "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of this application.

[0025] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0027] like Figures 1 to 11 As shown, this application provides an adjustment seat for a welding head, mainly used for precise position adjustment of the welding head in the horizontal X-axis and Y-axis directions. The adjustment seat includes a central seat 1 and two movable seats 2. A linear adjustment structure is provided between the central seat 1 and the two movable seats 2. The two linear adjustment structures are independent of each other; one is arranged along the X-axis and is responsible for the movement of the welding head along the X-axis; the other is arranged along the Y-axis and is responsible for the movement of the welding head along the Y-axis. This separate design ensures that the adjustments in the X-axis and Y-axis directions do not interfere with each other, improving the independence and accuracy of the adjustment.

[0028] Specifically, the adjustment structure includes an adjusting screw 3, a slider 4, a sliding groove 5, a locking block 8, and a locking bolt 9. The slider 4 is located on the central seat 1, and the sliding groove 5 is located on the corresponding movable seat 2. The slider 4 has an adjusting hole 40 adapted to the adjusting screw 3, and sliding grooves 6 are provided at both ends of the adjusting hole 40. The adjusting screw 3 has two push blocks 7, which are respectively connected to both ends of the corresponding movable seat 2. The two push blocks 7 slide and cooperate with the corresponding sliding grooves 6. In actual operation, by rotating the adjusting screw 3, the position of the corresponding movable seat 2 relative to the central seat 1 can be adjusted in the X-axis or Y-axis direction. For example, when it is necessary to adjust the position of the welding head along the X-axis direction, the operator only needs to rotate the adjusting screw 3 in the X-axis direction. The rotation of the adjusting screw 3 will be converted into the linear motion of the movable seat 2 through the cooperation of the push blocks 7 and the sliding grooves 6, thereby achieving precise displacement of the welding head.

[0029] The locking bolt 9 is threaded to the movable seat 2, and its tail is connected to the locking block 8. When the locking bolt 9 is tightened, it drives the locking block 8 to press against the slider part 4, thereby generating sufficient friction to firmly lock the movable seat 2 on the middle seat 1 and prevent any accidental displacement during the welding process.

[0030] In a preferred embodiment, the slider part 4 and the groove part 5 are adapted to be T-shaped protrusions and T-shaped grooves.

[0031] It is understood that the adjusting screw 3 and the adjusting hole can have various mating structures. For example, the adjusting screw 3 and the adjusting hole 40 can be screwed together, and the two push blocks 7 can be fixed to the adjusting screw 3 at intervals by bearings and move synchronously with it. When the adjusting screw 3 is rotated, the adjusting screw 3 will move linearly along the axial direction of the adjusting hole 40, and the two push blocks 7 will move axially synchronously with the adjusting screw 3. At the same time, due to the bearings, they do not rotate with the adjusting screw 3, and finally drive the moving seat 2 to move linearly under the constraint of the sliding groove 6. Among them, the axial direction of the bearings on the adjusting screw 3 is limited, so that the push blocks 7 move with the adjusting screw 3.

[0032] For example, the adjusting screw 3 is rotatably mounted in the adjusting hole 40 via a bearing. The bearing restricts the axial movement of the adjusting screw 3, retaining only rotational freedom. The two push blocks 7 are screwed to the adjusting screw 3. When the adjusting screw 3 is rotated, it only rotates on its own axis. The push blocks 7, due to the screwed engagement, tend to move axially and are restricted from rotation by the sliding groove 6. Ultimately, they move linearly along the sliding groove 6 and drive the moving seat 2.

[0033] In some embodiments, the locking bolt 9 is arranged perpendicular to the moving direction of the movable seat 2. This perpendicularity means that the axial direction of the locking bolt 9 is perpendicular to the moving direction of the movable seat 2 in the X-axis or Y-axis direction. This arrangement ensures that when the locking bolt 9 is tightened, the thrust generated is perpendicular to the sliding surface of the slider 4, thereby more effectively pushing the locking block 8 towards the slider 4 and achieving stable clamping. The movable seat 2 is provided with a mounting groove 10 communicating with the sliding groove 5, which provides a receiving space and sliding guide for the locking block 8. The locking block 8 is slidably disposed in the mounting groove 10 towards the corresponding slider 4, and includes a flat surface 11 for contacting the slider 4. The flat surface 11 is the surface of the locking block 8 that contacts the slider 4; its planar design helps to increase the contact area and improve the uniformity and stability of clamping. In particular, compared to directly pressing the slider part 4 with the top screw, it can greatly reduce the damage to the slider part 4 and avoid the sliding seat 2 from getting stuck.

[0034] Furthermore, a T-shaped through groove 12 is vertically provided on the locking block 8, and a T-shaped post 13 adapted to the T-shaped through groove 12 is provided at the end of the locking bolt 9. This combination of the T-shaped through groove 12 and the T-shaped post 13 ensures that when the locking bolt 9 rotates, the T-shaped post 13 can stably drive the locking block 8 to slide linearly within the mounting groove 10 without causing the locking block 8 to rotate. This allows the plane 11 of the locking block 8 to smoothly and evenly abut against the slider portion 4.

[0035] In a preferred embodiment, the locking blocks 8 and locking bolts 9 are arranged in two sets, spaced apart on the same side of the movable seat 2, to facilitate operation and achieve a uniform distribution of locking force. This spaced arrangement effectively avoids the locking force from concentrating at one point, thereby reducing local stress and ensuring that the locking blocks 8 can more evenly press against the slider part 4.

[0036] In some embodiments, one end of the adjusting screw 3 extends out of the central seat 1 and is provided with a rotating disk 14. The outer peripheral wall of the rotating disk 14 is provided with resistance grooves 15, and its end is provided with an operating hole 16. The rotating disk 14 can be a circular disk-shaped structure, and its diameter can be adjusted according to actual needs to facilitate rotation adjustment by the operator. The resistance grooves 15 are provided on the outer peripheral wall of the rotating disk 14 to increase the friction force when the operator rotates the rotating disk 14, thereby making it easier to rotate the adjusting screw 3. The resistance grooves 15 can be knurled, mesh-like, or other similar textured structures. The operating hole 16 is provided at the end of the rotating disk 14, allowing the operator to easily insert tools into the operating hole 16, thereby making it easier to rotate the rotating disk 14.

[0037] In some embodiments, the movable base 2 is provided with a positioning groove 17 adapted to the push block 7. The push block 7 is fixed to the positioning groove 17 by bolts, which can ensure the connection strength and stability between the push block 7 and the movable base 2, thereby ensuring the accuracy and reliability of adjustment.

[0038] This application also provides a welding device, including a frame 18, an upper welding head 19 and a lower welding head 20, and also including the aforementioned welding head adjustment seat and a drive mechanism. The drive mechanism is used to drive the upper welding head 19 to move up and down and to precisely control the downward pressure of the upper welding head 19. The drive mechanism includes a servo motor 21, a lifting transmission assembly and a pressure sensor 22. The servo motor 21 is connected to the pressure sensor 22 and the upper welding head 19 through the lifting transmission assembly.

[0039] Specifically, the servo motor 21 provides precise power output, transmitting power to the upper welding head 19 via a lifting transmission assembly to enable its vertical movement. The pressure sensor 22 monitors the downward pressure of the upper welding head 19 in real time and feeds the pressure signal back to the servo motor 21, forming a closed-loop control system. Based on the feedback signal from the pressure sensor 22, the servo motor 21 precisely adjusts its output torque, thereby achieving precise control over the downward pressure of the upper welding head 19. This ensures stable welding pressure during the welding process, avoids welding defects caused by pressure fluctuations, and improves welding quality and stability.

[0040] In some embodiments, the lifting transmission assembly includes a coupling 23, a lead screw 24, a bearing seat 25, a nut sleeve 26, a kit 27, a rod 28, a slide rail 29, a first base 30, and a second base 31. The output shaft of the servo motor 21 is connected to the lead screw 24 via the coupling 23. The upper end of the lead screw 24 is rotatably mounted on the frame 18 via the bearing seat 25, and its lower end is rotatably mounted on the first base 30. The nut sleeve 26 is mounted on the first base 30 and screw-fits the lead screw 24. The second base... The first and second seats 31 are provided with an opening 32 for the kit 27 to pass through. The upper end of the kit 27 is connected to the first seat 30, and a slide rail 33 is provided on its lower end face along its axial direction. The upper end of the rod 28 is slidably disposed in the slide rail 33, and a cam 34 is formed at its lower end and connected to the pressure sensor 22. A compression spring 35 is disposed on its outer sleeve, and the compression spring 35 abuts against the lower end of the kit 27 and the cam 34. The slide rail 29 is disposed on the frame 18 along the Z-axis. The first seat 30 and the second seat 31 are both connected to the slide rail 29 by a slider 36. Specifically, the servo motor 21 drives the transmission screw 24 to rotate through the coupling 23. The rotation of the transmission screw 24 causes the nut sleeve 26 to move up and down along the Z-axis. The nut sleeve 26 is fixedly connected to the first seat 30, causing the first seat 30 to move up and down along the slide rail 29, and simultaneously causing the second seat 31 to move synchronously. This configuration enables precise control and stable output of the downward pressure on the upper welding head 19, reduces damage to the pressure sensor 22, and extends its service life.

[0041] The cooperation between the slide rail 29 and the slider 36 ensures the smoothness of the lifting process, avoids shaking and deviation, and improves the welding quality.

[0042] In some embodiments, the upper welding head 19 includes a fixed base 190, a fixed block 191, a sleeve 192, a flow channel 193, and a welding head 194. An adjusting seat is disposed between the second base body 31 and the fixed base 190. The fixed base 190 and the fixed block 191 are connected by bolts and form a clamping hole 195. The sleeve 192 is fixed to the clamping hole 195. The fixed base 190 is provided with an inlet connector 196 and an outlet connector 197, and contains a first flow channel 198 communicating with the inlet connector 196 and a flow channel 197 communicating with the outlet connector 197. The second flow channel 199 includes a cooling flow channel 1940 on the welding head 194, which directly cools the welding head 194, improving cooling efficiency. The upper end of the flow channel pipe 193 is connected to the first flow channel 198, and its lower end extends into the cooling flow channel 1940, connecting the first flow channel 198 and the cooling flow channel 1940. The cooling flow channel 1940 and the inner channel of the sleeve 192 are connected to the second flow channel 199. The inner diameter of the inner channel of the sleeve 192 is larger than the outer diameter of the flow channel pipe 193, ensuring that the coolant can flow smoothly out of the cooling flow channel 1940. This configuration effectively reduces the temperature of the welding head 194, improving welding quality and efficiency. Furthermore, the structural design of this application is simple and reasonable, easy to manufacture and maintain. Furthermore, the inner channel of the sleeve 192 includes a first channel 1921 and a second channel 1922. The inner wall of the second channel 1922 is an inner oblique conical surface 1923. The upper end of the welding head 194 is provided with an outer oblique conical surface 1941 that is adapted to the inner oblique conical surface 1923. The inner oblique conical surface 1923 refers to the inner wall of the second channel 1922 having a conical structure, and the diameter of the conical structure gradually decreases from top to bottom. The outer oblique conical surface 1941 refers to the conical structure at the upper end of the welding head 194, which is adapted to the inner oblique conical surface 1923 to ensure good positioning and contact between the welding head 194 and the sleeve 192. Through the cooperation of the inner oblique conical surface 1923 and the outer oblique conical surface 1941, a tight connection between the welding head 194 and the sleeve 192 can be ensured to prevent coolant leakage.

[0043] Furthermore, the lower end of the flow channel 193 is provided with a beveled surface 1931. The beveled surface 1931 is inclined upward on the side near the outlet connector 197. The design of the beveled surface 1931 can guide the flow of coolant.

[0044] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0045] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0046] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. An adjustment seat for a welding head, characterized in that, The device includes a central base and two movable bases. A linear adjustment structure is provided between the central base and the two movable bases. One of the two linear adjustment structures is positioned along the X-axis, and the other along the Y-axis. Each linear adjustment structure includes an adjusting screw, a slider, a sliding groove, a locking block, and a locking bolt. The slider is located on the central base, and the sliding groove is located on the corresponding movable base. The slider has an adjusting hole adapted to the adjusting screw, and sliding grooves are formed at both ends of the adjusting hole. The adjusting screw has two push blocks, each connected to one end of the corresponding movable base. The two push blocks slide in conjunction with the corresponding sliding grooves. By rotating the adjusting screw, the corresponding movable base is adjusted relative to the central base in the corresponding direction. The locking bolt is threaded onto the movable base, and its tail is connected to the locking block to drive the locking block to press against the slider, thus locking and fixing the movable base to the central base.

2. The adjusting seat for a welding head according to claim 1, characterized in that, The locking bolt is arranged perpendicular to the moving direction of the movable seat. The movable seat is provided with a mounting groove that communicates with the sliding groove. The locking block is slidably disposed in the mounting groove toward the corresponding sliding block. It includes a plane for abutting against the sliding block. A T-shaped through groove is provided vertically through the locking block. The end of the locking bolt is provided with a T-shaped post that matches the T-shaped through groove.

3. The adjusting seat for a welding head according to claim 2, characterized in that, The locking blocks and locking bolts are in two sets, and are spaced apart on the same side of the movable seat.

4. The adjusting seat for a welding head according to claim 1, characterized in that, The adjusting screw is screwed into the adjusting hole, and the two push blocks are fixed to the adjusting screw at intervals by bearings and move synchronously with it.

5. The adjusting seat for a welding head according to claim 1, characterized in that, The adjusting screw is rotatably mounted in the adjusting hole via a bearing, and the two push blocks are helically engaged with the adjusting screw.

6. The adjusting seat for a welding head according to claim 1, characterized in that, One end of the adjusting screw extends out of the middle seat and is provided with a rotating disk. The outer peripheral wall of the rotating disk is provided with resistance grooves, and its end is provided with an operating hole. The movable seat is provided with a positioning groove that matches the push block, and the push block is fixed to the positioning groove by bolts.

7. A welding apparatus, comprising a frame, an upper welding head, and a lower welding head, characterized in that, It also includes an adjustment seat and a drive mechanism for the welding head as described in any one of claims 1 to 6, wherein the drive mechanism is used to drive the upper welding head to move up and down and to precisely control the downward pressure of the upper welding head, and includes a servo motor, a lifting transmission assembly and a pressure sensor, wherein the servo motor is connected to the pressure sensor and the upper welding head through the lifting transmission assembly.

8. The welding apparatus according to claim 7, characterized in that, The lifting transmission assembly includes a coupling, a lead screw, a bearing housing, a nut sleeve, a kit, a rod, a slide rail, a first base, and a second base. The output shaft of the servo motor is connected to the lead screw via the coupling. The upper end of the lead screw is rotatably mounted on the frame via the bearing housing, and its lower end is rotatably mounted on the first base. The nut sleeve is mounted on the first base and screw-fits the lead screw. The second base has an opening for the kit to pass through. The upper end of the kit is connected to the first base, and its lower end face has a slide rail along its axial direction. The upper end of the rod is slidably mounted on the slide rail, and its lower end forms a cam that connects to a pressure sensor. A compression spring is mounted on its outer sleeve, and the compression spring abuts against the lower end of the kit and the cam. The slide rail is mounted on the frame along the Z-axis. Both the first base and the second base are connected by a slider and the slide rail.

9. The welding apparatus according to claim 8, characterized in that, The upper welding head includes a fixed seat, a fixed block, a sleeve, a flow channel tube, and a welding head. The adjusting seat is disposed between the second seat body and the fixed seat. The fixed seat and the fixed block are connected by bolts and form a clamping hole. The sleeve is fixed in the clamping hole. The fixed seat is provided with an inlet connector and an outlet connector. It is provided with a first flow channel communicating with the inlet connector and a second flow channel communicating with the outlet connector. The welding head is provided with a cooling flow channel. The upper end of the flow channel tube is connected to the first flow channel, and its lower end extends into the cooling flow channel and connects the first flow channel and the cooling flow channel. The cooling flow channel and the inner channel of the sleeve are connected to the second flow channel. The inner diameter of the inner channel of the sleeve is larger than the outer diameter of the flow channel tube.

10. The welding apparatus according to claim 9, characterized in that, The inner channel of the sleeve includes a first channel and a second channel. The inner wall of the second channel is an inner oblique cone surface. The upper end of the welding head is provided with an outer oblique cone surface that matches the inner oblique cone surface. The lower end of the flow channel is provided with an oblique cut surface. The oblique cut surface is inclined upward on the side near the outlet joint.

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