A welding tool for bending machine frame

Abstract

The invention discloses a welding tool for a bending machine frame, which belongs to the field of frame welding. The tool comprises a plurality of fixing devices and positioning devices, which can accurately pre-position and fix the components after adjusting the relative position relationship of the components of the frame, thereby improving the welding accuracy of the frame and making welding more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of frame welding, and more specifically, relates to a frame welding tool for a bending machine. Background Art

[0002] The bending machine is an important equipment for bending and forming workpieces in the sheet metal industry. Its function is to press steel plates into parts of various shapes according to process requirements. The bending machine mainly includes a frame, a workbench and a slide block. The left and right cylinders are fixed on the columns on both sides of the frame. The slide block is connected to the piston of the cylinder and moves up and down along the guide rail fixed on the column. The lower die is fixed on the workbench, and the upper die is installed at the lower end of the slide block. The hydraulic system provides power and the electrical system gives instructions. Under the action of the cylinder, the slide block drives the upper die downward and closes the lower die to achieve the bending of the sheet metal.

[0003] The frame of the bending machine mainly includes a base, wall panels installed on both sides of the base, and an upper crossbeam installed between the two wall panels. These frame components are generally connected by welding. Among them, there are generally two crossbeams, one large and one small, which are installed at the front and rear ends of the wall panel respectively, and the large crossbeam is generally installed in the middle of the wall panel in the height direction, and the small crossbeam is installed on the upper part of the wall panel. As the installation body of the bending machine, the welding accuracy and stability between the various components of the frame play a very important role in the working accuracy of the various devices of the entire bending machine. If there is a problem with the welding accuracy of the bending machine frame, the bending accuracy of the plate by the working devices such as the slider and workbench will inevitably be affected.

[0004] For example, the patent document with Chinese patent application number: CN201310172813.4 and publication date: March 5, 2014 discloses a bending machine, including a frame, wall panels are arranged on the left and right sides of the frame, a workbench is horizontally arranged between the wall panels on both sides in the middle of the frame, and the bottom of the bending machine is provided with front and rear bottom beams between the left and right wall panels, an X-axis mechanism is arranged on the bottom beam, an R-axis lifting mechanism is arranged on the X-axis mechanism, a cross beam is arranged on the R-axis lifting mechanism, and a finger blocking mechanism is arranged on the cross beam; a signal transmitting device is arranged on the rear side of the left wall panel of the bending machine frame, and a signal receiving device is arranged on the rear side of the right wall panel of the bending machine frame corresponding to the signal transmitting device, and the signal receiving device is connected to the bending machine control system through a signal.

[0005] For example, the Chinese patent application number is CN201710863754.3, and the patent document with the publication date of December 25, 2017 discloses a bending machine, which relates to the field of mechanical equipment processing technology. It solves the problem that when the processing surface is replaced, the lower mold is very easy to fall off the processing platform, causing personal injury to workers. The key points of its technical solution are that the mold handle extends outward on both sides of the frame to form a first mounting block, and the lower mold extends outward on both sides of the frame to form a second mounting block. An annular hook is hung between the first mounting block and the second mounting block on each side, and the length of the annular hook is greater than the distance between the first mounting block and the second mounting block when the lower mold and the upper mold are in conflict; at least one side of the second mounting block is connected to a driving device for driving the lower mold to rotate with the second mounting block as the center.

[0006] The frames of the above two bending machines are welded by welding the base and the wall panel, and welding the crossbeam between the two wall panels. However, due to the large volume and weight of each component of the bending machine frame, it is difficult to accurately fix the position of each component by using existing means, and it is difficult to ensure the welding accuracy of the frame. In addition, it is difficult to maintain the relative position between the various components of the frame during welding, which makes welding time-consuming and laborious. Summary of the invention

[0007] 1. Problems to be solved

[0008] In view of the problem that the welding accuracy of various components of the existing bending machine frame is difficult to ensure and welding is time-consuming and labor-intensive, the present invention provides a bending machine frame welding tool, which can accurately pre-position and fix the various components after adjusting the relative position relationship of the various components of the frame, thereby improving the welding accuracy of the frame and making welding more convenient.

[0009] 2. Technical solution

[0010] To solve the above problems, the present invention adopts the following technical solutions.

[0011] A welding tool for a bending machine frame, comprising a first fixing device, a second fixing device and a third fixing device; the first fixing device, the second fixing device and the third fixing device each have two, which are respectively arranged on both sides of the frame;

[0012] The first fixing device comprises a connecting bracket, a rotating shaft, a hook and a first tightening mechanism; the connecting bracket is fixedly connected to the base and the wall panel respectively, the rotating shaft is rotatably arranged at the upper end of the connecting bracket, one end of the hook is fixedly connected to the rotating shaft, and the other end is installed with the first tightening mechanism;

[0013] The second fixing device comprises a front cross beam connecting plate, a wall panel connecting plate and a second tightening mechanism; one end of the front cross beam connecting plate is fixedly connected to the front cross beam, and the other end extends from the top of the wall panel and is installed with the second tightening mechanism; the wall panel connecting plate is fixedly installed on the upper part of the wall panel, and is fixedly connected to the front cross beam connecting plate;

[0014] The third fixing device comprises a connecting column, and the connecting column is fixedly connected to the base and the rear cross beam respectively.

[0015] As a further improvement of the technical solution, the third fixing device also includes a rear cross beam fixing mechanism, which includes a support plate and a connecting plate; the support plate is arranged on the upper end surface of the connecting column, and is provided with a support block and a waist-shaped hole, the support block is used to support the rear cross beam, and the upper end surface of the connecting column is provided with a screw passing through the waist-shaped hole; the upper part of the connecting plate is fixedly connected to the side of the rear cross beam, and the lower part of the connecting plate is fixedly connected to the side of the support plate.

[0016] As a further improvement of the technical solution, the first tightening mechanism includes a first tightening block and a first tightening screw; the first tightening block is fixedly installed at the end of the hook, and a screw hole is provided therein, and the first tightening screw passes through the screw hole and is threadedly connected to the first tightening block.

[0017] As a further improvement of the technical solution, the second tightening mechanism includes a second tightening block and a second tightening screw; the second tightening block is fixedly installed at the end of the front cross beam connecting plate, and a screw hole is provided therein, and the second tightening screw passes through the screw hole and is threadedly connected to the second tightening block.

[0018] As a further improvement of the technical solution, the second fixing device also includes a front crossbeam height adjustment plate; the front crossbeam height adjustment plate is fixedly connected to the front crossbeam, and a plurality of height adjustment screw holes are opened on it along the height direction; a through hole is provided on the front crossbeam connecting plate, which is fixedly connected to the front crossbeam height adjustment plate by bolts inserted into the through hole and the height adjustment screw hole.

[0019] As a further improvement of the technical solution, it also includes a fourth fixing device installed between the base and the wall panel; the fourth fixing device includes a clamping mechanism, and the clamping mechanism includes a clamping block, a clamping screw, a wheel disc and a pressure plate; the clamping block is fixedly installed on the upper end surface of the base, and a screw hole is provided therein along the width direction of the base; the clamping screw passes through the screw hole and is threadedly connected to the clamping block, and the wheel disc and the pressure plate are respectively fixedly installed at both ends of the clamping screw; the end of the clamping screw on which the wheel disc is installed passes through the wheel disc.

[0020] As a further improvement of the technical solution, the fourth fixing device also includes a positioning mechanism, which includes a positioning block and a positioning plate; the positioning block is installed on the upper end surface of the base; the positioning plate has two pieces, and the upper and lower parts thereof are provided with through holes along the width direction of the base; the sides of the base and the positioning block are respectively provided with screw holes along the width direction of the base; the upper part of the positioning plate is fixedly connected to the positioning block by bolts inserted into the upper through holes of the positioning plate and the screw holes of the positioning block, and the lower part of the positioning plate is fixedly connected to the base by bolts inserted into the lower through holes of the positioning plate and the screw holes of the base; the clamping block is fixedly connected to the positioning block.

[0021] As a further improvement of the technical solution, it also includes a wall panel positioning plate; the wall panel positioning plate is fixedly installed on the upper end surface of the base, and two rows of card blocks are symmetrically arranged along the center line of the wide side of the base, and a card slot for accommodating the wall panel is formed between the two rows of card blocks.

[0022] As a further improvement of the technical solution, it also includes a fifth fixing device and a sixth fixing device;

[0023] The fifth fixing device comprises a slider, a slider push rod and a slider push rod mounting seat; the slider push rod mounting seat is fixedly mounted on one end of the base, and a screw hole is opened on the slider push rod mounting seat along the length direction of the base; the slider push rod is a screw rod that passes through the screw hole of the slider push rod mounting seat and is threadedly connected to the slider push rod mounting seat, and is used to tighten the slider; sliding grooves are provided on both sides of the slider, and screws fixedly connected to the base are provided in the sliding grooves;

[0024] The sixth fixing device includes a pressure block, a pressure block push rod and a pressure block push rod mounting seat; the pressure block push rod mounting seat is fixedly installed at the other end of the base, and a screw hole is opened on it along the length direction of the base; the pressure block push rod is a screw that passes through the screw hole of the pressure block push rod mounting seat and is threadedly connected to the pressure block push rod mounting seat, and is used to tighten the pressure block; the pressure block is used to support the side surface of the wall panel and the end surface of the wall panel positioning plate.

[0025] As a further improvement of the technical solution, it also includes a wall panel limiting device; the wall panel limiting device includes a limiting screw and a limiting screw mounting seat; the limiting screw mounting seat is fixedly installed on the side of the base, and a screw hole is opened on its upper edge along the width direction of the base; the limiting screw passes through the screw hole of the limiting screw mounting seat and is threadedly connected to the limiting screw mounting seat, and its front end supports the side of the wall panel positioning plate; the wall panel limiting device has two, which are symmetrically installed on both sides of the long side of the wall panel positioning plate.

[0026] 3. Beneficial effects

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention provides a welding fixture for a bending machine frame. After adjusting the position of the wall panel on the base, the wall panel and the base can be fixed together by a first fixing device. The front cross beam located at the upper part of the front end of the wall panel can be fixed to the wall panel by a second fixing device. The heavy rear cross beam located at the middle part of the rear end of the wall panel can be fixed by a third fixing device. Thus, before welding the frame of the bending machine, the various components of the bending machine frame can be pre-fixed, making the welding of the various components of the frame convenient and quick. In particular, the first fixing device and the second fixing device are respectively provided with a tightening mechanism for tightening the wall panel, which can prevent the wall panel and the front cross beam from shaking when welding the frame, thereby affecting the welding accuracy. The two tightening mechanisms cooperate with each other to further enhance the tightening effect of the wall panel.

[0029] (2) The welding fixture of the bending machine frame of the present invention can adjust the position of the support plate on the upper end surface of the connecting column through the waist-shaped hole on the support plate, so as to adapt to rear beams of different sizes and different installation positions. The adjustability during installation is strong, which improves the convenience of installation for pre-fixing the rear beam;

[0030] (3) In the welding fixture for a bending machine frame of the present invention, a front crossbeam connecting plate is fixedly connected to the front crossbeam through a front crossbeam height adjustment plate, and the installation height of the front crossbeam on the wall panel can be adjusted by installing the front crossbeam connecting plate on height adjustment screw holes at different heights of the front crossbeam height adjustment plate, thereby facilitating the installation and adjustment of the front crossbeam;

[0031] (4) The present invention provides a welding fixture for a bending machine frame. The fourth fixing device can press the wall panel from the width direction of the base after the wall panel is pre-positioned on the base, limit the displacement of the wall panel in the width direction of the base, and prevent the wall panel from shaking and affecting the welding accuracy between the wall panel and the base. The fourth fixing device is provided with a positioning mechanism. By respectively setting screw holes extending in the width direction of the base on the sides of the positioning block and the base, and then connecting the upper and lower parts of the connecting plate to the two screw holes by bolts, the direction of the positioning block on the base can be adjusted so that the side of the positioning block with the screw holes is kept parallel to the side of the base. Then, the clamping mechanism is fitted and fixed to the positioning block, so that the telescopic direction of the screw in the clamping mechanism is perpendicular to the side of the base, thereby clamping and fixing the wall panel.

[0032] (5) The welding fixture for a bending machine frame of the present invention is also provided with a wall panel positioning plate with a clamping block on the base, and a clamping groove is formed between the clamping blocks. The wall panel can be placed in the clamping groove to realize the pre-positioning of the wall panel installation, and the positioning is convenient and quick;

[0033] (6) The present invention provides a welding fixture for a bending machine frame. After the wall panel is pre-positioned, the fifth fixing device and the sixth fixing device can tighten the wall panel from both sides in the length direction of the base to limit the displacement of the wall panel in the length direction of the base, so that the positioning of the wall panel is accurate, the fixing device is easy to disassemble and assemble, and the sixth fixing device can also limit the displacement of the wall panel positioning plate in the length direction of the base, avoiding the need to use another device to limit the wall panel positioning plate in the length direction of the base, saving installation space and cost;

[0034] (7) The welding fixture for a bending machine frame of the present invention can also lock the wall panel positioning plate in the width direction of the base through the wall panel limiting devices symmetrically installed on both sides of the wall panel positioning plate, thereby preventing the wall panel positioning plate from being displaced in the width direction of the base and affecting the welding accuracy of the wall panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is the overall working diagram of welding tooling;

[0036] Figure 2 is an axonometric view of a first fixture;

[0037] Figure 3 is a side view of a first fixing device;

[0038] Figure 4 is an axonometric view of a second fixture;

[0039] Figure 5 is a side view of a second fixing device;

[0040] Figure 6 is an axonometric view of the third fixture;

[0041] Figure 7 It is a schematic diagram of the structure of each device on the upper end surface of the base;

[0042] Figure 8 is a partial enlarged view of the fourth fixing device and the fifth fixing device;

[0043] Fig. 9 is a partial enlarged view of the sixth fixing device, the wall panel positioning plate and the wall panel limiting device;

[0044] In the figure:

[0045] 1. first fixing device; 11. connecting bracket; 12. rotating shaft; 13. hook; 14. first tightening mechanism; 141. first tightening block; 142. first tightening screw; 15. bracket positioning block;

[0046] 2. Second fixing device; 21. Front crossbeam connecting plate; 22. Wall panel connecting plate; 221. Positioning groove; 23. Second jacking mechanism; 231. Second jacking block; 232. Second jacking screw; 24. Front crossbeam height adjustment plate; 241. Height adjustment screw hole;

[0047] 3. Third fixing device; 31. Connecting column; 311. Base connecting column; 312. Rear crossbeam supporting column; 32. Rear crossbeam fixing mechanism; 321. Support plate; 322. Connecting plate; 323. Support block; 324. Waist-shaped hole; 325. Long strip hole;

[0048] 4. Frame; 41. Base; 42. Wall panel; 43. Front beam; 44. Rear beam;

[0049] 5. Fourth fixing device; 51. Positioning mechanism; 511. Positioning block; 512. Positioning plate; 52. Pressing mechanism; 521. Pressing block; 522. Pressing screw; 523. Wheel; 524. Pressing plate;

[0050] 6. Fifth fixing device; 61. Sliding block; 611. Sliding slot; 612. Sliding slot screw; 62. Sliding block top rod; 63. Sliding block top rod mounting seat; 64. Intermediate sliding block;

[0051] 7. Sixth fixing device; 71. Press block; 72. Press block push rod; 73. Press block push rod mounting seat; 74. Push column;

[0052] 8. Wall panel positioning plate; 81. Card block; 82. Limiting plate;

[0053] 9. Wall panel limit device; 91. Limit screw; 92. Limit screw mounting seat. DETAILED DESCRIPTION

[0054] The present invention is further described below in conjunction with specific embodiments and drawings.

[0055] Example 1

[0056] like Figure 1 As shown, a bending machine frame welding tool is used to pre-position and fix various components of the bending machine frame, so as to facilitate welding thereof and improve the welding accuracy of the bending machine frame. Among them, the bending machine frame 4 mainly includes a pair of symmetrically arranged bases 41, a pair of wall panels 42 respectively installed on the pair of bases 41, a front crossbeam 43 installed between the pair of wall panels 42 and located at the upper part of the front end of the wall panels 42, and a rear crossbeam 44 installed between the pair of wall panels 42 and located at the middle height of the rear end of the wall panels 42. Due to the large difference in the installation position of the front crossbeam 43 and the rear crossbeam 44, especially the difference in their own weight, the two cannot be fixed by the same device under normal circumstances.

[0057] The tooling mainly includes a first fixing device 1, a second fixing device 2 and a third fixing device 3. The first fixing device 1 is used to fix the wall panel 42 to the base 41, and the second fixing device 2 is used to fix the light front cross beam 43 to the upper part of the front end of the wall panel 42. It should be noted that the first fixing device 1, the second fixing device 2 and the third fixing device 3 each have a pair, which are respectively used for the installation of a pair of wall panels 42 and the base 41, the front cross beam 43 and the rear cross beam 44. The specific mechanism and working principle of each device at the single-side wall panel 42 are described in detail below.

[0058] like Figure 2 and Figure 3 As shown, the first fixing device 1 includes a connecting bracket 11, a rotating shaft 12, a hook 13 and a first tightening mechanism 14. The connecting bracket 11 is a rectangular bracket as a whole, and a rectangular notch is provided on the lower side thereof to fit with the base 41, so that the lower part of the connecting bracket 11 can fit with the side and upper end surface of the base 41, and the upper part of the connecting bracket 11 fits with the side of the wall panel 42. The connecting bracket 11 is fixedly connected to the base 41 and the wall panel 42 respectively. In this embodiment, after the connecting bracket 11 fits with the two, it is fixed to the base 41 and the wall panel 42 by bolts, so as to realize the fixed connection between the base 41 and the wall panel 42. The rotating shaft 12 is rotatably arranged on the upper part of the connecting bracket 11. Specifically, a groove is provided on the top of the connecting bracket 11, and the two ends of the rotating shaft 12 are respectively hingedly connected to the two sides of the groove, so that the rotating shaft 12 can rotate along its own central axis. The hook 13 is a "concave" structure, one end of which is sleeved on the rotating shaft 12 and fixedly connected to the rotating shaft 12, rotating with the rotation of the rotating shaft 12, and the other end is installed with a first tightening mechanism 14 and can extend from the top of the connecting bracket 11 and the wall panel 42 to the other side of the wall panel 42.

[0059] The first tightening mechanism 14 mainly includes a first tightening block 141 and a first tightening screw 142. The first tightening block 141 is fixedly mounted at the end of the hook 13, and is provided with a screw hole penetrating the front and rear end surfaces thereof, and the first tightening screw 142 passes through the screw hole and is threadedly connected to the first tightening block 141. When one end of the hook 13 equipped with the first tightening mechanism 14 is rotated to the other side of the wall panel 42, by rotating the first tightening screw 142, the first tightening screw 142 can be extended out of the screw hole and support the wall panel 42, so as to further fix the wall panel 42, and prevent the wall panel 42 from shaking when welding the wall panel 42 to the base 41, thereby affecting the welding accuracy. In addition, a bracket positioning block 15 is further provided in the lower groove of the connecting bracket 11 of the present embodiment, and a positioning groove matching the bracket positioning block 15 is provided on the base 41, and the connecting bracket 11 can be pre-positioned by inserting the bracket positioning block 15 into the positioning groove, so as to facilitate the installation of the connecting bracket 11. Normally, the first fixing device 1 is symmetrically installed on the outside of the two wall panels 42, but the first fixing device 1 can also be installed on the inside of the wall panel 42 without affecting the installation of the corresponding device inside the bending machine.

[0060] like Figure 4 and Figure 5 As shown, the second fixing device 2 includes a front cross beam connecting plate 21, a wall panel connecting plate 22, a second jacking mechanism 23 and a front cross beam height adjustment plate 24. Among them, the wall panel connecting plate 22 is fixedly installed on the upper part of the wall panel 42 by bolts. In order to facilitate the installation of the wall panel connecting plate 22, a positioning groove 221 is provided on the wall panel connecting plate 22 in this embodiment, and a clamping block matching the positioning groove 221 is provided at a position corresponding to the upper end surface of the wall panel 42. During installation, the clamping block is first inserted into the positioning groove 221 to realize the pre-positioning of the wall panel connecting plate 22, and then fixedly installed by bolts. The front cross beam connecting plate 21 is a "concave" structure, and the groove of its concave structure is fixedly connected to the wall panel connecting plate 22, and its two ends are respectively located on both sides of the wall panel 43. The second jacking mechanism 23 is installed at one end of the front cross beam connecting plate 21 extending out of the outside of the wall panel 42, and the other end of the front cross beam connecting plate 21 is fixedly connected to one end of the front cross beam 43. Specifically, the second tightening mechanism 23 includes a second tightening block 231 and a second tightening screw 232. The second tightening block 231 is fixedly mounted at the end of the front crossbeam connecting plate 21, and a screw hole is provided therein, and the second tightening screw 232 passes through the screw hole and is threadedly connected to the second tightening block 231. By rotating the second tightening screw 232, the second tightening screw 232 can be extended out of the screw hole and hold the wall panel 42, thereby further fixing the wall panel 42, and the second tightening screw 232 can cooperate with the first tightening mechanism 14 to fix the wall panel 42 in a relative direction, thereby improving the fixing stability and the welding accuracy when welding the front crossbeam 43.

[0061] The front crossbeam height adjustment plate 24 is fixedly connected to the front crossbeam 43, and its upper end exceeds the front crossbeam 43 by a certain height. Specifically, the front crossbeam height adjustment plate 24 in this embodiment is an L-shaped plate structure, one inner side of which is fixedly connected to the lower end of the front crossbeam 43, and the other inner side is in contact with the side of the front crossbeam 43 and exceeds the front crossbeam 43 by a certain height. The portion of the front crossbeam height adjustment plate 24 that exceeds the height of the front crossbeam 43 is provided with a plurality of height adjustment screw holes 241 along the height direction, and correspondingly, the front crossbeam connecting plate 21 is provided with a through hole at the inner end of the wall panel 42, and the front crossbeam connecting plate 21 is fixedly connected to the front crossbeam height adjustment plate 24 by bolts inserted into the through hole and the height adjustment screw hole 241. By installing the front crossbeam connecting plate 21 on the height adjustment screw holes 241 of different heights of the front crossbeam height adjustment plate 24, the installation height of the front crossbeam 43 on the wall panel 42 can be adjusted, which is convenient for the installation and adjustment of the front crossbeam 43.

[0062] like Figure 6 As shown, the third fixing device 3 includes a connecting column 31 and a rear cross beam fixing mechanism 32. The connecting column 31 is fixedly connected to the base 41 and the rear cross beam 44, respectively, for fixing the rear cross beam 44. Specifically, the connecting column 31 is composed of a base connecting column 311 and a rear cross beam support column 312, one side of the base connecting column 311 is fixedly connected to the side of the base 41 by bolts, and the other side is fixedly connected to the side of the rear cross beam support column 312, and the rear cross beam support column 312 is installed with the rear cross beam fixing mechanism 32 for fixing the rear cross beam 44.

[0063] The rear cross beam fixing mechanism 32 includes a support plate 321 and a connecting plate 322. The support plate 321 is arranged on the upper end surface of the connecting column 31, and is provided with a support block 323 and a waist-shaped hole 324. The support block 323 is used to support the rear cross beam 44. The upper end surface of the connecting column 31, that is, the upper end surface of the rear cross beam support column 312 is provided with a screw rod passing through the waist-shaped hole 324. The support plate 321 can adjust its position on the upper end surface of the rear cross beam support column 312 through the waist-shaped hole 324, and then lock it by screwing a nut into the screw rod, so as to facilitate the installation and fixing of the rear cross beam 44. The upper part of the connecting plate 322 is fixedly connected to the side of the rear cross beam 44, and the lower part thereof is fixedly connected to the side of the support plate 321, and the connection method is bolted. In addition, the through hole opened at the bottom of the connecting plate 322 is a long hole 325, and the side of the supporting plate 321 is a screw hole. The height of the connecting plate 322 can be adjusted by adjusting the position of the bolt inserted into the screw hole in the long hole 325, so as to adapt to the rear cross beam 44 of different sizes and installation positions.

[0064] The above three fixing devices can realize the pre-fixed installation of various components of the frame 4, so as to facilitate the welding of the frame 4 and improve the welding convenience and welding accuracy. Among them, since the wall panel 42 is connected to the base 41, the front beam 43 and the rear beam 44 respectively, the pre-installation accuracy and stability of the wall panel 42 become very important, which directly affects the welding accuracy of the entire frame 4. In view of this problem, Figure 7 As shown, the tooling improves the installation stability of the wall panel 42 by providing a fourth fixing device 5, a fifth fixing device 6 and a sixth fixing device 7, and improves the pre-positioning accuracy of the wall panel 42 by using a wall panel positioning plate 8 and a wall panel limiting device 9.

[0065] like Figure 8 As shown, the fourth fixing device 5 includes a positioning mechanism 51 and a clamping mechanism 52. Among them, the positioning mechanism 51 includes a positioning block 511 and a positioning plate 512. The positioning block 511 is installed on the upper end surface of the base 41. The positioning plate 512 has two pieces, and the upper and lower parts thereof are provided with through holes along the width direction of the base 41, and the sides of the base 41 and the positioning block 511 are respectively provided with screw holes along the width direction of the base 41. By inserting the bolts into the upper through holes of the positioning plate 512 and the screw holes of the positioning block 511, the upper part of the positioning plate 512 is fixedly connected to the positioning block 511. And by inserting the bolts into the lower through holes of the positioning plate 512 and the screw holes of the base 41, the lower part of the positioning plate 512 is fixedly connected to the base 41. Therefore, the positioning block 511 is fixedly connected to the base 41 through the positioning plate 512. And because the through holes and screw holes of the three are designed along the width direction of the base 41, the direction of the positioning block 511 on the base 41 can be adjusted so that the side of the positioning block 511 with the screw hole remains parallel to the side of the base 41. When the clamping mechanism 52 is installed on the side of the positioning block 511, the direction of the clamping mechanism 52 on the base 41 can be adjusted through the positioning mechanism 51.

[0066] The clamping mechanism 52 includes a clamping block 521, a clamping screw 522, a wheel disc 523 and a pressure plate 524. The clamping block 521 is installed adjacent to the positioning block 511 on the upper end surface of the base 41, and the adjacent sides of the two are fixedly connected by bolts. In order to facilitate the adjustment of the direction of the clamping block 521 on the base 41, the adjacent sides of the clamping block 521 and the positioning block 511 are all flat structures. Screw holes are provided in the clamping block 521 along the width direction of the base 41. The clamping screw 522 passes through the screw hole and is threadedly connected to the clamping block 521. The wheel disc 523 and the pressure plate 524 are fixedly installed at both ends thereof, and the wheel disc 523 and the pressure plate 524 are respectively located on the outer side and the inner side of the wall panel 42, and one end of the clamping screw 522 on which the wheel disc 523 is installed passes through the wheel disc 523. During installation, the lower end of the wall panel 42 is provided with a through hole just for the compression screw 522 and the positioning block 511 to pass through, and the diameter of the through hole is smaller than the width of the compression block 521 and the pressure plate 524. Therefore, by rotating the wheel 523, the compression screw 522 can be driven to rotate, thereby controlling the compression screw 522 to extend and retract in the compression block 521, so that the pressure plate 524 presses the wall panel from the inner side of the wall panel. When the compression degree reaches the target, the compression bolt 522 at one end of the wheel 523 is locked by a nut to improve the installation stability of the wall panel 42.

[0067] There are two fourth fixing devices 5 on the single base 41 , which are respectively arranged at the front and rear parts of the base 41 .

[0068] like Fig. 9 As shown, the wall panel positioning plate 8 is fixedly mounted on the upper end surface of the base 41, and two rows of card blocks 81 are symmetrically arranged along the midline of the wide side of the base 41, and a card slot for accommodating the wall panel 42 is formed between the two rows of card blocks 81. When installing the wall panel 42, the wall panel 42 can be pre-positioned by simply inserting the wall panel 42 into the card slot, which is convenient and quick. In addition, two limiting plates 82 are symmetrically arranged along the midline of the wide side of the base 41 on the upper end surface of the base 41, and a notch matching the width of the wall panel positioning plate 8 is formed between the two limiting plates 82. Therefore, the wall panel positioning plate 8 can be pre-positioned before being fixedly mounted on the base 41, further improving the pre-positioning accuracy of the wall panel 42.

[0069] The wall panel limiting device 9 includes a limiting screw 91 and a limiting screw mounting seat 92. The limiting screw mounting seat 92 is fixedly mounted on the side of the base 41, and a screw hole is provided on the upper edge thereof along the width direction of the base 41. The limiting screw 91 passes through the screw hole of the limiting screw mounting seat 92 and is threadedly connected to the limiting screw mounting seat 92, and its front end supports the side of the wall panel positioning plate 8. The wall panel limiting device 9 has two, which are symmetrically mounted on both sides of the long side of the wall panel positioning plate 8. When working, the wall panel positioning plate 8 can be clamped by rotating the limiting screws 91 on both sides of the wall panel positioning plate 8, so as to achieve locking of the wall panel positioning plate 8 in the width direction of the base 41, and prevent the wall panel positioning plate 8 from being displaced in the width direction of the base 41 and affecting the welding accuracy of the wall panel 42. In addition, the present embodiment is also provided with a handle at the end of the limiting screw 91 to facilitate the rotation of the limiting screw 91.

[0070] However, since the slot formed by the block 81 on the wall panel positioning plate 8 is a slot extending along the length direction of the base 41, it cannot limit the movement of the wall panel 42 in the length direction of the base 41, resulting in the wall panel 42 being displaced in the length direction of the base 41 after being positioned, affecting the subsequent installation of other devices. Therefore, the tooling of the present invention is provided with a fifth fixing device 6 and a sixth fixing device 7, which are used to support the wall panel 42 from both sides of the length direction of the wall panel 43 to improve the installation accuracy of the wall panel 42.

[0071] like Figure 8 As shown, the fifth fixing device 6 includes a slider 61, a slider push rod 62 and a slider push rod mounting seat 63. The slider push rod mounting seat 63 is fixedly mounted on one end of the base 41, and a screw hole is provided on the slider push rod mounting seat 63 along the length direction of the base 41. The slider push rod 62 is a screw rod that passes through the screw hole of the slider push rod mounting seat 63 and is threadedly connected to the slider push rod mounting seat 63, and is used to tighten the slider 61. The slider 61 is a step block structure with a wider lower part, and a slide groove 611 is provided on both sides of the lower part. At the same time, a slide groove screw 612 is fixedly connected to the position corresponding to the slide groove 611 on the base 41, and the slide groove screw 612 passes through the slide groove 611. After the slider 61 is moved to make the slider 61 press against the wallboard 42, the slider push rod 62 can be rotated to make the slider push rod 62 press against the slider 61, so that the slider 61 presses against the wallboard 42, and then the slide groove screw 612 and the slider push rod 62 are locked by nuts to further fix the slider 61. In addition, the present embodiment further provides an intermediate slider 64 between the slider top rod 62 and the slider 61. The intermediate slider 64 can directly contact the slider top rod 62 instead of the slider 61, thereby reducing the degree of damage to the slider 61. By replacing the intermediate sliders 64 of different sizes, it can adapt well to wall panels 42 of different sizes, thereby improving the adjustability of the fifth fixing device 6.

[0072] like Fig. 9As shown, the sixth fixing device 7 includes a pressure block 71, a pressure block push rod 72 and a pressure block push rod mounting seat 73. Among them, the pressure block push rod mounting seat 73 is fixedly mounted on the other end of the base 41, and a screw hole is opened thereon along the length direction of the base 41. The pressure block push rod 72 is a screw that passes through the screw hole of the pressure block push rod mounting seat 73 and is threadedly connected to the pressure block push rod mounting seat 73, and is used to tighten the pressure block 71. The pressure block 71 is used to support the side surface of the wall panel 42 and the end surface of the wall panel positioning plate 8. In this embodiment, a sliding block is provided at the lower part of the pressure block 71, and a sliding groove extending along the length direction of the base 41 is provided at a position corresponding to the pressure block 71 on the base 41. A top column 74 for tightening the wall panel 42 and the wall panel positioning plate 8 is provided on the side of the pressure block 71 opposite to the wall panel 42 and the wall panel positioning plate 8. After the wall panel 42 is pre-positioned on the wall panel positioning plate 8, the movement of the pressure block 71 can be controlled by rotating the pressure block top rod 72 to tighten the wall panel 42 and the wall panel positioning plate 8, while the other side of the wall panel positioning plate 8 is directly restricted by the wall panel 42. Therefore, the pressure block 71 can also limit the displacement of the wall panel positioning plate 8 in the length direction of the base 41.

[0073] After the wall panel 42 is pre-positioned, the fifth fixing device 6 and the sixth fixing device 7 can tighten the wall panel 42 from both sides in the length direction of the base 41, thereby limiting the displacement of the wall panel 42 in the length direction of the base 41, so that the positioning of the wall panel 42 is accurate. The sixth fixing device 7 can also limit the displacement of the wall panel positioning plate 8 in the length direction of the base 41, avoiding the need for another device to limit the wall panel positioning plate 8 in the length direction of the base 41, saving installation space and cost.

[0074] In summary, the welding fixture for the frame of a bending machine of the present embodiment can accurately pre-position the components and maintain the relative positions of the components after adjusting the relative position relationship of the components of the frame, thereby improving the welding accuracy of the frame and making welding more convenient. In particular, except for the wall panel positioning plate 8, each device and each component of the frame 4 are detachably fixedly connected by bolts, so that each device can be disassembled and used multiple times after the welding of the frame 4 is completed, and the use cost is low.

[0075] Example 2

[0076] A bending machine frame welding method, using a bending machine frame welding tool of embodiment 1 to weld various components of the bending machine frame, comprises the following steps:

[0077] 1. After the two bases 41 are placed in parallel, the wall panel 42 is pre-positioned and fixed on the base 41. The specific process of pre-positioning and fixing the wall panel 42 on the base 41 is as follows: First, the wall panel positioning plate 8 and the fourth fixing device 5 are fixedly installed on the base 41, then the wall panel 42 is inserted into the slot on the wall panel positioning plate 8, and at the same time, the pressing screw 522 and the positioning block 511 on the fourth fixing device 5 pass through the wall panel 42. Then, the fifth fixing device 6 and the sixth fixing device 7 are respectively installed at both ends of the base 41, and the slider top rod 62 and the pressure block top rod 72 are respectively rotated to control the slider 61 and the pressure block 71 to hold the wall panel 42 from both ends of the base 41, and the slider 61, the slider top rod 62 and the pressure block top rod 72 are locked. Finally, the compression screw 522 of the fourth fixing device 5 is rotated to make the pressure plate 524 press the wall panel 42 from the inner side of the wall panel 42, and then the end of the compression screw 522 passing through the wheel disc 523 is locked by a nut.

[0078] 2. Fit the connecting bracket 11 with the surface of the base 41 and the wall panel 42, rotate the hook 13 to make the first tightening mechanism 14 move to the inner side of the wall panel 42, control the first tightening mechanism 14 to press the wall panel 42 from the inner side of the wall panel 42, and then fix the connecting bracket 11 with the base 41 and the wall panel 42 by bolts along the contact point between the connecting bracket 11, the base 41 and the wall panel 42.

[0079] 3. The wall panel connecting plate 22 is fixedly installed on the front end of the upper end surface of the wall panel 42 by bolts, and then the front cross beam connecting plate 21 is fixedly connected with the wall panel connecting plate 22 by bolts. One end of the front cross beam connecting plate 21 having the second tightening mechanism 23 is located on the outside of the wall panel 42, and the other end is located on the inside of the wall panel 42 and is fixedly connected with one end of the front cross beam 43 through the front cross beam height adjustment plate 24. Specifically, according to the actual required installation height of the front cross beam 43, the through hole on the front cross beam connecting plate 21 is fixedly connected with the height adjustment screw hole 241 on the front cross beam height adjustment plate 24. The second tightening mechanism 23 is controlled to tighten the wall panel 42, and the two ends of the front cross beam 43 are respectively fitted with the wall panels 42 on both sides.

[0080] Fourth, the side surface of the connecting column 31 is fixedly connected to the inner side surface of the rear end of the base 41 by bolts, and then the rear cross beam 44 is fixedly installed on the rear cross beam fixing mechanism 32 on the upper end surface of the connecting column 31 by bolts, and the two ends of the rear cross beam 44 are respectively fitted with the wall panels 42 on both sides.

[0081] 5. Weld the contacting parts of the base 41 , the wall panel 42 , the front cross beam 43 and the rear cross beam 44 .

[0082] Through the above operation, when welding the components of the frame 4, the positions of the components can be positioned and fixed in advance, thereby improving the convenience and accuracy of welding. In particular, except for the wall panel positioning plate 8, each device and each component of the frame 4 are detachably fixedly connected by bolts, so that after the welding of the frame 4 is completed, each device can be disassembled and used multiple times, and the use cost is low.

[0083] The examples described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. A welding tool for a bending machine frame, characterized in that: It comprises a first fixing device (1), a second fixing device (2) and a third fixing device (3); each of the first fixing device (1), the second fixing device (2) and the third fixing device (3) has two, which are respectively arranged on two sides of the frame (4); The first fixing device (1) comprises a connecting bracket (11), a rotating shaft (12), a hook (13) and a first tightening mechanism (14); the connecting bracket (11) is fixedly connected to the base (41) and the wall panel (42) respectively, the rotating shaft (12) is rotatably arranged at the upper end of the connecting bracket (11), one end of the hook (13) is fixedly connected to the rotating shaft (12), and the other end is installed with the first tightening mechanism (14); The second fixing device (2) comprises a front crossbeam connecting plate (21), a wall panel connecting plate (22) and a second tightening mechanism (23); one end of the front crossbeam connecting plate (21) is fixedly connected to the front crossbeam (43), and the other end extends from the top of the wall panel (42) and is installed with the second tightening mechanism (23); the wall panel connecting plate (22) is fixedly installed on the upper part of the wall panel (42) and is fixedly connected to the front crossbeam connecting plate (21); The third fixing device (3) comprises a connecting column (31), the connecting column (31) comprising a base connecting column (311) and a rear cross beam support column (312), one side of the base connecting column (311) being fixedly connected to a side of the base (41) by means of bolts, and the other side of the base connecting column (311) being fixedly connected to a side of the rear cross beam support column (312), and the rear cross beam support column (312) being mounted with a rear cross beam fixing mechanism (32) for fixing the rear cross beam (44); The rear cross beam fixing mechanism (32) comprises a support plate (321) and a connecting plate (322); the support plate (321) is arranged on the upper end surface of the connecting column (31), and is provided with a support block (323) and a waist-shaped hole (324); the support block (323) is used to support the rear cross beam (44); the upper end surface of the connecting column (31) is provided with a screw rod passing through the waist-shaped hole (324); the upper part of the connecting plate (322) is fixedly connected to the side surface of the rear cross beam (44), and the lower part of the connecting plate (322) is fixedly connected to the side surface of the support plate (321).

2. The welding tool for a bending machine frame according to claim 1, characterized in that: The first tightening mechanism (14) comprises a first tightening block (141) and a first tightening screw (142); the first tightening block (141) is fixedly mounted on the end of the hook (13) and has a screw hole therein, and the first tightening screw (142) passes through the screw hole and is threadedly connected to the first tightening block (141).

3. The welding tool for a bending machine frame according to claim 1, characterized in that: The second tightening mechanism (23) comprises a second tightening block (231) and a second tightening screw (232); the second tightening block (231) is fixedly mounted on the end of the front cross beam connecting plate (21) and has a screw hole therein, and the second tightening screw (232) passes through the screw hole and is threadedly connected to the second tightening block (231).

4. The welding tool for a bending machine frame according to claim 3 is characterized in that: The second fixing device (2) further comprises a front crossbeam height adjustment plate (24); the front crossbeam height adjustment plate (24) is fixedly connected to the front crossbeam (43), and is provided with a plurality of height adjustment screw holes (241) along the height direction; the front crossbeam connecting plate (21) is provided with a through hole, and is fixedly connected to the front crossbeam height adjustment plate (24) by means of bolts inserted into the through hole and the height adjustment screw hole (241).

5. A bending machine frame welding tool according to any one of claims 1 to 4, characterized in that: The fourth fixing device (5) is installed between the base (41) and the wall panel (42); the fourth fixing device (5) includes a clamping mechanism (52), and the clamping mechanism (52) includes a clamping block (521), a clamping screw (522), a wheel disc (523) and a pressing plate (524); the clamping block (521) is fixedly installed on the upper end surface of the base (41), and a screw hole is provided in the clamping block along the width direction of the base (41); the clamping screw (522) passes through the screw hole and is threadedly connected to the clamping block (521), and the wheel disc (523) and the pressing plate (524) are fixedly installed at both ends of the clamping screw (522); one end of the clamping screw (522) on which the wheel disc (523) is installed passes through the wheel disc (523).

6. The welding tool for a bending machine frame according to claim 5, characterized in that: The fourth fixing device (5) further comprises a positioning mechanism (51), the positioning mechanism (51) comprising a positioning block (511) and a positioning plate (512); the positioning block (511) is mounted on the upper end surface of the base (41); the positioning plate (512) comprises two pieces, the upper and lower parts of which are provided with through holes along the width direction of the base (41); the sides of the base (41) and the positioning block (511) are provided with screw holes along the width direction of the base (41); the upper part of the positioning plate (512) is fixedly connected to the positioning block (511) by means of bolts inserted into the upper through holes of the positioning plate (512) and the screw holes of the positioning block (511), and the lower part of the positioning plate (512) is fixedly connected to the base (41) by means of bolts inserted into the lower through holes of the positioning plate (512) and the screw holes of the base (41); the pressing block (521) is fixedly connected to the positioning block (511).

7. A bending machine frame welding tool according to any one of claims 1 to 4, characterized in that: It also comprises a wall panel positioning plate (8); the wall panel positioning plate (8) is fixedly mounted on the upper end surface of the base (41), and two rows of clamping blocks (81) are symmetrically arranged on the wall panel positioning plate along the midline of the wide side of the base (41), and a clamping groove for accommodating the wall panel (42) is formed between the two rows of clamping blocks (81).

8. The welding tool for a bending machine frame according to claim 7, characterized in that: Also includes a fifth fixing device (6) and a sixth fixing device (7); The fifth fixing device (6) comprises a slider (61), a slider push rod (62) and a slider push rod mounting seat (63); the slider push rod mounting seat (63) is fixedly mounted on one end of the base (41), and a screw hole is provided on the slider push rod mounting seat along the length direction of the base (41); the slider push rod (62) is a screw rod that passes through the screw hole of the slider push rod mounting seat (63) and is threadedly connected to the slider push rod mounting seat (63), and is used to tighten the slider (61); two sides of the slider (61) are provided with slide grooves (611), and the slide grooves (611) are provided with slide groove screw rods (612) that are fixedly connected to the base (41); The sixth fixing device (7) comprises a pressure block (71), a pressure block push rod (72) and a pressure block push rod mounting seat (73); the pressure block push rod mounting seat (73) is fixedly mounted on the other end of the base (41), and a screw hole is provided on the pressure block push rod mounting seat along the length direction of the base (41); the pressure block push rod (72) is a screw rod that passes through the screw hole of the pressure block push rod mounting seat (73) and is threadedly connected to the pressure block push rod mounting seat (73), and is used to tighten the pressure block (71); the pressure block (71) is used to support the side surface of the wall panel (42) and the end surface of the wall panel positioning plate (8).

9. The welding tool for a bending machine frame according to claim 8, characterized in that: It also includes a wall panel limiting device (9); the wall panel limiting device (9) includes a limiting screw (91) and a limiting screw mounting seat (92); the limiting screw mounting seat (92) is fixedly mounted on the side of the base (41), and a screw hole is opened on the upper edge thereof along the width direction of the base (41); the limiting screw (91) passes through the screw hole of the limiting screw mounting seat (92) and is threadedly connected to the limiting screw mounting seat (92), and the front end of the limiting screw (91) abuts against the side of the wall panel positioning plate (8); the wall panel limiting device (9) has two, which are symmetrically mounted on both sides of the long side of the wall panel positioning plate (8).

Images