High-precision laser welding machine clamp pressing device

Abstract

The application discloses a high-precision laser welding machine clamp pressing device, which comprises a gantry clamp body, a lower pressing plate, an upper pressing mechanism and at least a first telescopic driving part, the lower pressing plate is fixed on the gantry clamp body, and first front and rear clamp openings are arranged on the front and rear sides of the lower pressing plate respectively; the upper pressing mechanism is located above the lower pressing plate, and the upper pressing mechanism comprises at least two guide columns, a connecting seat and an upper pressing plate, each guide column is arranged in parallel and slidably on the gantry clamp body, and the connecting seat is fixed to the bottom of each guide column. The application has the beneficial effects that the second front and rear clamp openings are balanced in stress, the upper pressing plate can slightly rotate relative to the connecting seat, the second front clamp opening can effectively press the strip steel, the strip steel in the area from the second rear clamp opening to the second front clamp opening is in a completely pressed state, the coincidence degree of the shearing section of the strip steel is effectively improved, and the welding strength is improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a high-precision laser welding machine clamping device. Background Technology

[0002] Currently, strip laser welding machines (such as the strip head and tail clamping device disclosed in application number 201621066487.4) are used to weld strips during the operation of strip online units in steel enterprises. The clamping device is an important component of the laser welding machine and is used to clamp the strip.

[0003] Existing laser welding machine clamping devices, such as Figures 1-7 As shown, the gantry clamp includes a gantry clamp body 1, a lower pressure plate 2, an upper pressure plate 3, and at least two telescopic drive components 4. The lower pressure plate 2 is fixed to the lower part of the gantry clamp body 1. The front and rear sides of the lower pressure plate 2 are respectively provided with a first front jaw 21 and a first rear jaw 22. The distance from the center of the gantry clamp body 1 to the first front jaw 21 is greater than the distance from the center of the gantry clamp body 1 to the first rear jaw 22. The upper pressure plate 3 is disposed above the lower pressure plate 2 and slidably connected to the gantry clamp body 1. The front and rear sides of the upper pressure plate 3 are respectively provided with a second front jaw 31 corresponding to the first front jaw 21 and a second rear jaw 32 corresponding to the first rear jaw 22. Each of the telescopic drive components 4 is fixed to the upper beam of the gantry clamp body 1. The output end of each of the telescopic drive components 4 is fixedly connected to the upper pressure plate 3 and is used to drive the upper pressure plate 3 to move up and down.

[0004] In the aforementioned clamping device, because the distance between the rear jaw and the pressure center is less than the distance between the front jaw and the pressure center, the front and rear jaws of the clamping device are subjected to uneven force. The pressure of the rear jaw is greater than that of the front jaw, and the front jaw is the one that actually clamps the strip steel. As a result, the front jaw cannot effectively clamp the strip steel. At the same time, the strip steel in the area between the rear jaw and the front jaw is in a free state, and the bending state of the strip steel cannot be corrected. When the strip head and tail are joined, their cross-sections cannot be completely matched, which seriously affects the welding strength. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a high-precision laser welding machine clamping device. This invention solves the problem in the prior art where the distance between the rear jaw and the pressure center is less than the distance between the front jaw and the pressure center, resulting in uneven force on the front and rear jaws of the clamping device. The pressure of the rear jaw is greater than that of the front jaw, and the front jaw is the only part that actually clamps the strip steel. This prevents the front jaw from effectively clamping the strip steel, and at the same time, the strip steel in the area between the rear and front jaws is in a free state, and the bending state of the strip steel cannot be corrected. When the strip head and tail are joined, their cross-sections cannot be completely matched, which seriously affects the welding strength.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a high-precision laser welding machine clamping device, comprising:

[0007] Gantry clamp body;

[0008] A lower pressure plate is fixed to the gantry clamp body, and a first front jaw and a first rear jaw are respectively provided on the front and rear sides of the lower pressure plate;

[0009] An upper pressing mechanism is located above the lower pressing plate. The upper pressing mechanism includes at least two guide posts, a connecting seat, and an upper pressing plate. Each of the guide posts is slidably arranged side by side on the gantry clamp body. The connecting seat is fixed to the bottom of each of the guide posts. The upper pressing plate is located below the connecting seat. The rear side of the upper pressing plate is hinged to the rear side of the connecting seat. The front and rear sides of the upper pressing plate are respectively provided with a second front jaw corresponding to the first front jaw and a second rear jaw corresponding to the first rear jaw.

[0010] At least one first telescopic drive member, the output end of each first telescopic drive member is hinged to the upper pressure plate and used to drive the upper pressure plate to move up and down, and the distance from the central axis of each first telescopic drive member to the second front jaw and the second rear jaw are equal.

[0011] Furthermore, the gantry clamp body is a U-shaped welded steel structure, and the lower pressure plate is fixed to the lower part of the gantry clamp body by welding.

[0012] Furthermore, the distance from the center of the gantry clamp body to the first front jaw is greater than the distance from the center of the gantry clamp body to the first rear jaw.

[0013] Furthermore, at least two through slots are arranged side by side on the upper beam of the gantry clamp body, and each of the guide posts slides through the corresponding through slot and can move up and down along the through slot.

[0014] Furthermore, the upper pressing mechanism also includes a connecting plate and a mounting box. The connecting plate and the mounting box are both fixed on the upper pressing plate. The connecting plate is located on the rear side of the upper pressing plate and directly below the connecting seat. The rear side of the connecting plate is hinged to the rear side of the connecting seat. The mounting box is located on the front side of the upper pressing plate and has a cavity inside.

[0015] Furthermore, at least two first lugs are fixedly installed side by side on the rear side of the connecting seat, and at least two second lugs are fixedly installed side by side on the rear side of the connecting plate. Each second lug corresponds to a corresponding first lug and is hinged by a first pivot pin.

[0016] Furthermore, the high-precision laser welding machine clamping device also includes at least two limiting mechanisms. Each limiting mechanism includes a first pull rod seat, a second pull rod seat, and a pull rod. Each first pull rod seat is fixed side by side to the front side of the connecting seat, and each second pull rod seat is fixed side by side to the front side of the connecting plate. One end of the pull rod has an oblong hole corresponding to each of the first pull rod seats, and the oblong hole is hinged to the first pull rod seat via a second shaft pin. The other end of the pull rod has a circular hole corresponding to each of the second pull rod seats, and the circular hole is hinged to the second pull rod seat via a third shaft pin.

[0017] Furthermore, at least two bearing seats are fixedly installed on the top of the mounting box, and each of the first telescopic drive components is hinged side by side to the front side of the gantry clamp body. The output end of each of the first telescopic drive components is hinged to the corresponding bearing seat through a fourth shaft pin.

[0018] Furthermore, the high-precision laser welding machine clamping device also includes an internal centering mechanism, which is disposed within the cavity.

[0019] Furthermore, the high-precision laser welding machine clamping device also includes at least two second telescopic drive components, each of which is fixed to the front side of the gantry clamp body, and the output end of each of the second telescopic drive components is used to abut against the top of the mounting box.

[0020] Compared with the prior art, the beneficial effects of the present invention include: the strip steel is placed on the lower pressure plate, such that the head or tail of the strip steel is located at the first front jaw, and each of the first telescopic drive members is operated so that each of the first telescopic drive members synchronously drives the upper pressure plate to move downward. The downward movement of the upper pressure plate will drive the connecting seat to move downward until the upper pressure plate contacts the strip steel. At this time, each of the first telescopic drive members continues to synchronously drive the lower pressure plate to move downward and apply pressure to the upper pressure plate, so that the second front jaw and the second rear jaw are subjected to equal force. When the upper pressure plate contacts the strip steel, due to processing and assembly errors, the second front jaw and the second rear jaw are balanced. Since the contact surfaces of the jaws and the strip cannot be completely pressed together, the upper pressure plate has a self-rotating adjustment function. Under the drive of each of the first telescopic drive components, the upper pressure plate can rotate slightly relative to the connecting seat, so that the second front jaw, which actually plays a pressing role on the strip, can effectively press the strip. At the same time, the second front jaw and the second rear jaw can completely press the strip. The strip in the area from the second rear jaw to the second front jaw is in a completely pressed state, and the bending state of the strip can be corrected. When splicing the strip head and tail, the fit of the shear section of the strip is effectively improved, thereby improving the welding strength. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an existing laser welding machine clamping device;

[0022] Figure 2 yes Figure 1 A front view of the existing laser welding machine clamping device;

[0023] Figure 3 yes Figure 1 Left view of the existing laser welding machine clamping device;

[0024] Figure 4 This is a schematic diagram of the structure of the inlet and outlet clamping devices of an existing laser welding machine, which clamp the head and tail of the belt respectively.

[0025] Figure 5 yes Figure 4 Enlarged view of point A in the image;

[0026] Figure 6 This is a simplified diagram of the forces acting on the front and rear jaws in an existing laser welding machine clamping device;

[0027] Figure 7 This is a schematic diagram simulating the structure of strip steel with upper and lower misalignment at the head and tail when the strip is in a free state in the area from the rear jaw to the front jaw.

[0028] Figure 8 This is a three-dimensional structural diagram of a high-precision laser welding machine clamping device provided by the present invention;

[0029] Figure 9 yes Figure 8 A front view of a high-precision laser welding machine clamping device;

[0030] Figure 10 yes Figure 8 A left view of a high-precision laser welding machine clamping device;

[0031] Figure 11 yes Figure 8 A three-dimensional structural diagram of the clamping device for medium- and high-precision laser welding machines, omitting the gantry clamp body and the internal centering mechanism;

[0032] Figure 12 yes Figure 11 A three-dimensional structural diagram of the high-precision laser welding machine clamping device, omitting the gantry clamp body and the internal centering mechanism, from another perspective;

[0033] Figure 13 yes Figure 11 Enlarged view of the middle limit mechanism;

[0034] Figure 14 yes Figure 13 A three-dimensional structural diagram of the tie rod;

[0035] Figure 15 This is a simplified force diagram of the front and rear jaws in a high-precision laser welding machine clamping device provided by the present invention;

[0036] Figure 16 This is a schematic diagram of the structure of the inlet and outlet clamping device of a high-precision laser welding machine provided by the present invention, which clamps the head and tail of the belt respectively;

[0037] Figure 17 This is a schematic diagram simulating the structure of strip steel with misalignment at the head and tail when the strip steel is compressed in the area from the rear jaw to the front jaw.

[0038] In the diagram: 1-Gantry clamp body, 2-Lower pressure plate, 21-First front jaw, 22-First rear jaw, 3-Upper pressure plate, 31-Second front jaw, 32-Second rear jaw, 4-Telescopic drive component, 100-Gantry clamp body, 110-Through groove, 120-Guide sleeve, 200-Lower pressure plate, 210-First front jaw, 220-First rear jaw, 300-Upper pressing mechanism, 310-Guide post, 320-Connecting seat, 321-First lug, 3 30-Upper pressure plate, 331-Second front jaw, 332-Second rear jaw, 340-Connecting plate, 341-Second lug, 350-Mounting box, 351-Cavity, 352-Shaft seat, 400-First telescopic drive component, 500-Limiting mechanism, 510-First pull rod seat, 520-Second pull rod seat, 530-Pull rod, 531-Oval hole, 532-Round hole, 600-Internal centering mechanism, 700-Second telescopic drive component. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] This invention provides a high-precision laser welding machine clamping device, the structure of which is as follows: Figures 8-10 As shown, the device includes a gantry clamp body 100, a lower pressure plate 200, an upper pressure mechanism 300, and at least one first telescopic drive member 400. The lower pressure plate 200 is fixed to the gantry clamp body 100, and a first front jaw 210 and a first rear jaw 220 are respectively provided on the front and rear sides of the lower pressure plate 200. The upper pressure mechanism 300 is located above the lower pressure plate 200, and includes at least two guide posts 310, a connecting seat 320, and an upper pressure plate 330. Each guide post 310 is slidably arranged side by side on the gantry clamp body 100, and the connecting seat 320 is fixed to the bottom of each guide post 310. The upper pressure plate 330 is disposed below the connecting seat 320. The rear side of the upper pressure plate 330 is hinged to the rear side of the connecting seat 320. The front and rear sides of the upper pressure plate 330 are respectively provided with a second front jaw 331 corresponding to the first front jaw 210 and a second rear jaw 332 corresponding to the first rear jaw 220. The output end of each of the first telescopic drive members 400 is hinged to the upper pressure plate 330 and is used to drive the upper pressure plate 330 to move up and down. The distance from the central axis of each of the first telescopic drive members 400 to the second front jaw 331 and the second rear jaw 332 is equal.

[0041] The strip steel is placed on the lower pressure plate 200, such that the head or tail of the strip steel is located at the first front jaw 210. The first telescopic drive members 400 are then operated to synchronously drive the upper pressure plate 330 downwards. This downward movement of the upper pressure plate 330 causes the connecting seat 320 to move downwards until the upper pressure plate 330 contacts the strip steel. At this point, the first telescopic drive members 400 continue to synchronously drive the lower pressure plate 200 downwards and apply pressure to the upper pressure plate 330, ensuring that the second front jaw 331 and the second rear jaw 332 are subjected to balanced forces. When the upper pressure plate 330 contacts the strip steel, due to machining and assembly errors, the second front jaw 331... Since the contact surface between the second rear jaw 332 and the strip cannot be completely pressed together, the upper pressure plate 330 has a self-rotating adjustment function. That is, under the drive of each of the first telescopic drive members 400, the upper pressure plate 330 can rotate slightly relative to the connecting seat 320, so that the second front jaw 331, which actually plays a pressing role on the strip, can effectively press the strip. At the same time, the second front jaw 331 and the second rear jaw 332 can completely press the strip. The strip in the area from the second rear jaw 332 to the second front jaw 331 is in a completely pressed state, and the bending state of the strip can be corrected. When the strip head and tail are spliced, the fit of the strip shear section is effectively improved, thereby improving the welding strength.

[0042] As a preferred embodiment, please refer to Figure 8 The gantry clamp body 100 is a U-shaped welded steel structure, which facilitates the opening of a through slot 110 on the upper beam of the gantry clamp body 100. The lower pressure plate 200 is fixed to the lower part of the gantry clamp body 100 by welding, and the lower pressure plate 200 is used to place the strip steel.

[0043] As a preferred embodiment, please refer to Figure 10 The distance from the center of the gantry clamp body 100 to the first front jaw 210 is greater than the distance from the center of the gantry clamp body 100 to the first rear jaw 220. Due to space limitations, auxiliary clamping devices, lifting roller devices, and other equipment components need to be installed on the outer side of the gantry clamp body 100 (i.e., the side where the first rear jaw 220 is located). The lower pressure plate 200 and the upper pressure plate 330 cannot be extended to the side of the first rear jaw 220 and the second rear jaw 332 to achieve the distance from the center of the gantry clamp body 100 to the first front jaw 210 being equal to the distance from the center of the gantry clamp body 100 to the first rear jaw 220.

[0044] As a preferred embodiment, please refer to Figure 8 and Figure 9At least two through slots 110 are arranged side by side on the upper beam of the gantry clamp body 100, and guide sleeves 120 are fixedly installed at each through slot 110. Each guide post 310 slides through the corresponding guide sleeve 120 and can move up and down along the guide sleeve 120, so that the connecting seat 320 can only slide up and down with the guide post 310 and has no tendency to move in other directions. At the same time, during the process of the first telescopic drive member 400 synchronously driving the upper pressure plate 330 to move up and down, the upper pressure plate 330 can be connected to each guide post 310 through the connecting seat 320, making the up and down movement of the upper pressure plate 330 more stable.

[0045] As a preferred embodiment, please refer to Figures 10-12 The upper pressing mechanism 300 further includes a connecting plate 340 and a mounting box 350. The connecting plate 340 and the mounting box 350 are both fixed to the upper pressing plate 330 by welding. The connecting plate 340 is disposed on the rear side of the upper pressing plate 330 and located directly below the connecting seat 320. The rear side of the connecting plate 340 is hinged to the rear side of the connecting seat 320, so as to facilitate the setting of the limiting mechanism 500 on the front side of the connecting plate 340 and the front side of the connecting seat 320. The mounting box 350 is disposed on the front side of the upper pressing plate 330. The mounting box 350 has a cavity 351 inside, so as to facilitate the installation of the internal centering mechanism 600 in the cavity 351.

[0046] As a preferred embodiment, please refer to Figures 10-12 At least two first lugs 321 are fixedly installed side by side on the rear side of the connecting seat 320, and at least two second lugs 341 are fixedly installed side by side on the rear side of the connecting plate 340. Each second lug 341 corresponds to a corresponding first lug 321 and is hinged by a first pivot pin, so that the bottom surface of the connecting seat 320 and the upper surface of the connecting plate 340 form a contact surface. Under the pressure of each of the first telescopic drive members 400, the connecting plate 340 can rotate around the first pivot pin, so that the second front jaw 331 can effectively clamp the strip steel.

[0047] As a preferred embodiment, please refer to Figures 12-14The high-precision laser welding machine clamping device further includes at least two limiting mechanisms 500. Each limiting mechanism 500 includes a first pull rod seat 510, a second pull rod seat 520, and a pull rod 530. Each first pull rod seat 510 is fixed side-by-side to the front side of the connecting seat 320, and each second pull rod seat 520 is fixed side-by-side to the front side of the connecting plate 340. One end of the pull rod 530 has an oblong hole 531 corresponding to the first pull rod seat 510, and the oblong hole 531 is hinged to the first pull rod seat 510 via a second shaft pin. The other end of the pull rod 530 has a circular hole 532 corresponding to the second pull rod seat 520. The second pull rod seat 520 is hinged to the third shaft pin. When the connecting plate 340 rotates slightly around the first shaft pin, the distance between the front side of the connecting plate 340 and the front side of the connecting seat 320 will increase. That is, the contact surface of the connecting seat 320 and the connecting plate 340 will form a certain angle. The purpose of the pull rod 530 connecting the connecting seat 320 and the connecting plate 340 is to prevent the angle formed by the contact surface of the connecting plate 340 and the connecting seat 320 from increasing infinitely when the first telescopic drive member 400 drives the mounting box 350 to move down when the guide post 310 and the guide sleeve 120 are locked together, thus avoiding interference with the mechanical structure.

[0048] As a preferred embodiment, please refer to Figure 11 At least two bearing seats 352 are fixedly installed on the top of the mounting box 350. Each of the first telescopic drive members 400 is hinged side by side to the front side of the gantry clamp body 100. The output end of each of the first telescopic drive members 400 is hinged to the corresponding bearing seat 352 through a fourth shaft pin. When the connecting plate 340 rotates slightly around the first shaft pin, it will drive the upper pressure plate 330 and the mounting box 350 to rotate slightly, hinge the output end of each of the first telescopic drive members 400 to each of the bearing seats 352 fixed on the mounting box 350, so that when the mounting box 350 rotates slightly, each of the bearing seats 352 can rotate slightly around the corresponding fourth shaft pin.

[0049] As a preferred embodiment, please refer to Figure 8 and Figure 12The high-precision laser welding machine clamping device also includes an internal centering mechanism 600, which is located within the cavity 351. The main function of the internal centering mechanism 600 is to align the slack strip head or tail to the center of the high-precision laser welding machine clamping device. The internal centering mechanism 600 includes an internal centering cylinder, which is a long-stroke cylinder. To avoid interference between the internal centering cylinder and the gantry clamp body 100, the internal centering mechanism 600 is installed on the side of the gantry clamp body 100 closer to the center of the welding machine (i.e., the front side of the gantry clamp body 100). The reason why the internal centering mechanism 600 is not located on the rear side of the gantry clamp body 100 is that the closer the internal centering mechanism 600 is to the strip head or tail, the higher its centering accuracy. Therefore, the internal centering mechanism 600 must be located on the side of the gantry clamp body 100 closer to the center of the welding machine.

[0050] As a preferred embodiment, please refer to Figure 8 The high-precision laser welding machine clamping device further includes at least two second telescopic drive components 700. Each second telescopic drive component 700 is fixed to the front side of the gantry clamp body 100. The distance from the central axis of each second telescopic drive component 700 to the second front jaw 331 and the second rear jaw 332 is equal. The output end of each second telescopic drive component 700 is used to abut against the top of the mounting box 350 to apply pressure to the mounting box 350 and achieve the purpose of clamping the strip steel. Each second telescopic drive component 700 is only responsible for increasing the pressure when the mounting box 350 is in the lower position. This design reduces the number of first telescopic drive components 400 connected to the mounting box 350, avoiding the problem of too many first telescopic drive components 400 causing the output ends of the first telescopic drive components 400 to be out of sync, which would cause the upper pressure plate 330 to tilt when it is pressed down.

[0051] To better understand this invention, the following is combined with... Figures 8-17 The working principle of the technical solution of the present invention will be described in detail below:

[0052] The strip steel is placed on the lower pressure plate 200, such that the head or tail of the strip steel is located at the first front jaw 210. Each of the first telescopic drive members 400 is operated, causing them to synchronously drive the mounting box 350 downwards. The mounting box 350 drives the upper pressure plate 330 downwards, which in turn drives the connecting plate 340 downwards. The connecting plate 340 then drives the connecting seat 320 downwards until the upper pressure plate 330... When the first telescopic drive component 400 contacts the strip, it continues to synchronously drive the mounting box 350 downward and apply pressure to the upper pressure plate 330 through the mounting box 350, so that the second front jaw 331 and the second rear jaw 332 are subjected to balanced forces. When the upper pressure plate 330 contacts the strip, due to processing and assembly errors, the contact surfaces of the second front jaw 331, the second rear jaw 332 and the strip cannot be completely pressed together. At this time, the connecting plate 340 has a self-rotating adjustment. The function is that the connecting plate 340, driven by the mounting box 350 and each of the first telescopic drive members 400, can rotate slightly around the first shaft pin relative to the connecting seat 320. At this time, the contact surfaces of the connecting seat 320 and the connecting plate 340 will form a certain angle, that is, there is a certain gap between the two surfaces. When the connecting plate 340 moves upward through the mounting box 350 and driven by each of the first telescopic drive members 400, this gap will be automatically eliminated. The slight rotation of the connecting plate 340 relative to the connecting seat 320 around the first shaft pin allows the second front jaw 331, which truly plays a role in pressing the strip steel, to effectively press the strip steel. At the same time, the second front jaw 331 and the second rear jaw 332 can completely press the strip steel. The strip steel in the area from the second rear jaw 332 to the second front jaw 331 is in a completely pressed state, and the bending state of the strip steel can be corrected. When the strip head and tail are joined, the fit of the shear section of the strip steel is effectively improved, thereby improving the welding strength.

[0053] The high-precision laser welding machine clamping device provided by this invention has the following beneficial effects:

[0054] (1) Each of the first telescopic drive members 400 and each of the second telescopic drive members 700 are fixed to the front side of the gantry clamp body 100, so that the pressure applied by each of the first telescopic drive members 400 and each of the second telescopic drive members 700 to the upper pressure plate 330 moves towards the second front jaw 331, and the pressure center is equal to the distance between the second front jaw 331 and the second rear jaw 332, so that the clamping force of the hydraulic cylinder is evenly distributed on the second front jaw 331 and the second rear jaw 332, and the strip steel is pressed more tightly by the second front jaw 331;

[0055] (2) Each of the second telescopic drive components 700 is only responsible for increasing the pressure when the mounting box 350 is in the lower position. This design reduces the number of the first telescopic drive components 400 connected to the mounting box 350, and avoids setting too many first telescopic drive components 400, which can easily cause the output ends of the first telescopic drive components 400 to be out of sync, thereby causing the upper pressure plate 330 to tilt when it is pressed down.

[0056] (3) Due to processing and assembly errors, the contact surfaces of the second front jaw 331, the second rear jaw 332, and the strip cannot be completely pressed together. At this time, the connecting plate 340 has a self-rotation adjustment function. That is, the connecting plate 340 can rotate slightly around the first shaft pin relative to the connecting seat 320 under the drive of each of the first telescopic drive components 400 through the mounting box 350. This allows the second front jaw 331, which actually presses the strip, to effectively press the strip. At the same time, the second front jaw 331 and the second rear jaw 332 can completely press the strip. The strip in the area from the second rear jaw 332 to the second front jaw 331 is in a completely pressed state. The bending state of the strip can be corrected. When the strip head and tail are spliced, the fit of the strip shear section is effectively improved, thereby improving the welding strength.

[0057] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A high-precision laser welding machine clamp pressing device, characterized in that, The utility model relates to a kind of double-sided hydraulic press, including: Gantry clamp body; Lower pressing plate, the lower pressing plate is fixed on the gantry clamp body, the front and rear sides of the lower pressing plate are provided with first front jaw and first rear jaw respectively; Upper pressing mechanism, the upper pressing mechanism is located above the lower pressing plate, the upper pressing mechanism includes at least two guide columns, connecting seat and upper pressing plate, each guide column is side by side slidingly arranged on the gantry clamp body, the connecting seat is fixed on the bottom of each guide column, the upper pressing plate is arranged below the connecting seat, the rear side of the upper pressing plate is hinged with the rear side of the connecting seat, the front and rear sides of the upper pressing plate are provided with second front jaw and second rear jaw corresponding to the first front jaw and the first rear jaw respectively; At least one first telescopic driving part, the output end of each first telescopic driving part is hinged with the upper pressing plate for driving the upper pressing plate to move up and down, and the distance from the central axis of each first telescopic driving part to the second front jaw and the second rear jaw is equal; The upper pressing mechanism further includes connecting plate and mounting box, the connecting plate and the mounting box are both fixed on the upper pressing plate, the connecting plate is arranged on the rear side of the upper pressing plate and located directly below the connecting seat, the rear side of the connecting plate is hinged with the rear side of the connecting seat, the mounting box is arranged on the front side of the upper pressing plate, and the mounting box has a cavity therein; The rear side of the connecting seat is fixedly installed with at least two first lugs side by side, the rear side of the connecting plate is fixedly installed with at least two second lugs side by side, each second lug corresponds to the corresponding first lug one by one and is hinged through a first shaft pin; At least two limiting mechanisms, each limiting mechanism includes a first pull rod seat, a second pull rod seat and a pull rod, each first pull rod seat is fixed on the front side of the connecting seat side by side, each second pull rod seat is fixed on the front side of the connecting plate side by side, one end of the pull rod is provided with a waist-shaped hole corresponding to the first pull rod seat, the waist-shaped hole is hinged with the first pull rod seat through a second shaft pin, and the other end of the pull rod is provided with a circular hole corresponding to the second pull rod seat, and the circular hole is hinged with the second pull rod seat through a third shaft pin.

2. The high-precision laser welding machine clamp pressing device according to claim 1, characterized in that, The gantry clamp body is a "mouth" type steel structure welded part, and the lower pressing plate is fixed on the lower part of the gantry clamp body by welding.

3. The high-precision laser welding machine clamp pressing device according to claim 2, characterized in that, The distance from the center of the gantry clamp body to the first front jaw is greater than the distance from the center of the gantry clamp body to the first rear jaw.

4. The high-precision laser welding machine clamp pressing device according to claim 3, characterized in that, At least two through grooves are provided side by side on the upper beam of the gantry clamp body, each guide column slides through the corresponding through groove and can move up and down along the through groove.

5. The high-precision laser welding machine clamp pressing device according to claim 1, characterized in that, The top of the mounting box is fixedly installed with at least two shaft seats, each first telescopic driving part is hinged to the front side of the gantry clamp body side by side, and the output end of each first telescopic driving part is hinged with the corresponding shaft seat through a fourth shaft pin.

6. The high-precision laser welding machine clamp pressing device according to claim 5, characterized in that, It also includes an in-machine centering mechanism arranged in the cavity.

7. The high-precision laser beam welding machine clamp pressing device according to claim 6, characterized in that, The second telescopic driving members are arranged on the front side of the gantry body, and the output ends of the second telescopic driving members are arranged to abut against the top of the mounting box.

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