Wedge block integrated hydraulic quick clamping device of bending machine

Abstract

The utility model discloses a bending machine wedge block integrated hydraulic quick clamping device, which relates to the field of clamping, mounting and dismounting of bending machine upper dies and comprises a sliding plate, two hydraulic oil cylinders are mounted on the lower portion of the front end of the sliding plate in a bilateral symmetry manner, and a pressing plate is fixedly connected to the lower portion of the front end of the sliding plate between the two hydraulic oil cylinders through bolts. The pressing plate in the locked state is used for fixing the whole-length middle body, a clamping mechanism is installed on the whole-length middle body, the two ends of the clamping mechanism are fixedly connected with the output ends of the two hydraulic oil cylinders respectively, and the clamping mechanism is used for rapidly assembling or disassembling the upper die. By arranging the clamping mechanism, a plurality of upper dies can be synchronously clamped or not clamped, the upper die mounting or replacing efficiency is high, the clamping force is large, and safety, stability and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the field of clamping, installation and disassembly of an upper die of a bending machine, in particular to a wedge-block integrated hydraulic quick clamping device for a bending machine. Background Art

[0002] The quick clamp of the bending machine is a clamping device for installing the upper die. It is an essential device for every bending machine. Currently, the quick clamp is mainly divided into two types: manual quick clamp and hydraulic quick clamp.

[0003] Manual quick clamping mainly uses a lever or eccentric mechanism to manually clamp the upper die. When clamping the upper die, it is necessary to manually open them one by one. After installing the upper die, they need to be clamped one by one, which is laborious and time-consuming. The efficiency is low when replacing the upper die. Hydraulic quick clamping mainly uses a hydraulic bladder to expand the ejector rod to clamp the upper die, or to clamp the upper die through the piston rod on the quick clamp. It has high processing and manufacturing costs, and the bladder is easily damaged during long-term use, causing malfunctions. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic quick clamping device with an integrated wedge block for a bending machine in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic quick clamping device with an integrated wedge block of a bending machine, comprising a slide plate, two hydraulic cylinders are symmetrically installed on the left and right sides of the front lower part of the slide plate, the front lower part of the slide plate is located between the two hydraulic cylinders and is fixedly connected to a pressure plate by bolts, the pressure plate in a locked state is used to fix the entire length intermediate body, a clamping mechanism is installed on the entire length intermediate body, the two ends of the clamping mechanism are respectively fixedly connected to the output ends of the two hydraulic cylinders, and the clamping mechanism is used to quickly clamp, install or disassemble the upper mold.

[0006] As a further solution of the present invention: an adjusting wedge is provided at the bottom end of the slide, and the adjusting wedge is fixedly connected to the full-length intermediate body by bolts; a supporting body is provided below the adjusting wedge, and the top of the supporting body abuts against the bottom end of the adjusting wedge; a front pressure plate is provided at the front end of the full-length intermediate body, and the supporting body and the front pressure plate are connected by a guide mechanism, and the guide mechanism allows the front pressure plate to slide back and forth.

[0007] As a further solution of the present invention: the guide mechanism includes a No. 1 through-hole opened in the interior of the full-length intermediate body, a No. 2 through-hole located in the interior of the front pressure plate, and a screw hole opened on the support body, the No. 1 through-hole, the No. 2 through-hole and the screw hole are aligned in the front-to-back direction, the diameter of the No. 1 through-hole is larger than the diameter of the No. 2 through-hole, the guide rod bolt passes through the No. 1 through-hole and the No. 2 through-hole and is threadedly connected to the screw hole, a return spring is installed in the No. 1 through-hole, and the two ends of the return spring are respectively in contact with the support body and the front pressure plate;

[0008] An elastic mechanism for pressing the long wedge block is provided between the two adjacent front pressure plates, and the elastic mechanism includes a connecting pressure plate located between the two front pressure plates, the connecting pressure plate is fixedly connected to the entire intermediate body by bolts, and a mounting hole is provided at a position where the connecting pressure plate is aligned with the long wedge block, the inner wall of the mounting hole is threadedly connected to a hollow connecting sleeve, the outer wall of the connecting sleeve is threadedly connected to a No. 2 hexagonal nut, the connecting sleeve is movably connected to a positioning bead at one end close to the long wedge block, and a connecting spring is abutted between one end of the inner wall of the connecting sleeve and the positioning bead.

[0009] As a further solution of the present invention: the clamping mechanism includes a long wedge fixedly connected between the output ends of the two hydraulic cylinders, a sliding groove for the long wedge to slide left and right is provided on the whole-length intermediate body, the front end of the long wedge passes through the outside of the sliding groove, and the outer side of the long wedge is formed with an extrusion inclined surface, the front end of the front pressure plate is provided with a circular hole that passes through to the rear end of the front pressure plate, the inner wall of the circular hole is threadedly connected with a spherical tightening screw, and the end of the spherical tightening screw close to the extrusion inclined surface is a hemispherical structure, and the front end of the front pressure plate is provided with a No. 1 hexagonal nut threadedly connected to the spherical tightening screw, and the threaded portion of the connection between the spherical tightening screw and the front pressure plate is in opposite direction to the threaded portion of the connection between the spherical tightening screw and the No. 1 hexagonal nut;

[0010] A top spherical column is fixedly connected to the inner wall of the circular hole, and a hemispherical groove is formed at the contact position between the top spherical column and the hemispherical structure of one end of the spherical tightening screw, and a pressure inclined surface that matches the extrusion inclined surface is formed at the contact position between the top spherical column and the extrusion inclined surface.

[0011] As a further solution of the present invention: a groove is provided at the front end of the upper die, and a positioning block connected to the groove is installed at the lower end of the front pressure plate.

[0012] As a further solution of the present invention: the output ends of the two hydraulic cylinders are fixedly installed with connecting heads, and the docking position between one end of the long wedge block and the connecting head is provided with a plug hole, and a connecting pin is inserted into the plug hole.

[0013] As a further solution of the present invention: the hydraulic cylinder can be replaced by an electric cylinder, a screw drive, or a pneumatic cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By setting up a clamping mechanism, multiple upper molds can be clamped or unclamped simultaneously, and the installation or replacement of upper molds is efficient, with large clamping force, safety, stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation of the guide mechanism of the present utility model;

[0018] Figure 3 This is a schematic diagram of the docking of the positioning block and the positioning of the utility model;

[0019] Figure 4 This is a schematic diagram of the installation of the long wedge block of the present invention.

[0020] In the figure: 1. Slide plate; 2. Hydraulic cylinder; 3. Clamping mechanism; 4. Upper die; 5. Pressing plate; 6. Lengthening intermediate body; 7. Adjusting wedge; 8. Support body; 9. Long wedge; 10. Top ball column; 11. No. 1 hexagonal nut; 12. Spherical tightening screw; 13. Front pressure plate; 14. Guide rod bolt; 15. Return spring; 16. Positioning block; 17. Groove; 18. Extrusion slope; 19. Connecting head; 20. Connecting pin; 21. Connecting pressure plate; 22. Positioning bead; 23. No. 2 hexagonal nut; 24. Connecting sleeve; 25. Connecting spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 4In the embodiment of the utility model, it includes a skateboard 1, and two hydraulic cylinders 2 are symmetrically installed on the left and right sides of the front end lower part of the skateboard 1. The front end lower part of the skateboard 1 is located between the two hydraulic cylinders 2 and is fixedly connected with a pressure plate 5 by bolts. The locking pressure plate 5 is used to fix the whole-length intermediate body 6. A clamping mechanism 3 is installed on the whole-length intermediate body 6. The two ends of the clamping mechanism 3 are respectively fixedly connected to the output ends of the two hydraulic cylinders 2. The clamping mechanism 3 is used to quickly clamp, install or disassemble the upper mold 4.

[0023] In this embodiment: First, when installing and disassembling the upper mold 4, by starting the two hydraulic cylinders 2, one hydraulic cylinder 2 extends and the other hydraulic cylinder 2 shortens, pushing the clamping mechanism 3 to cancel the clamping of the upper mold 4. Conversely, the running directions of the two hydraulic cylinders 2 are opposite (that is, the previously shortened one extends, and the previously extended one shortens), so that the clamping of the upper mold 4 can be achieved. This design method can achieve the synchronous clamping or canceling of multiple upper molds 4 at the same time.

[0024] Please refer to Figure 2 An adjusting wedge 7 is provided at the bottom end of the skateboard 1, and the adjusting wedge 7 is fixedly connected to the whole-length intermediate body 6 by bolts. A supporting body 8 is provided below the adjusting wedge 7, and the top of the supporting body 8 abuts against the bottom end of the adjusting wedge 7. A front pressure plate 13 is provided at the front end of the whole-length intermediate body 6. The supporting body 8 and the front pressure plate 13 are connected by a guide mechanism, and the guide mechanism allows the front pressure plate 13 to slide back and forth.

[0025] In this embodiment, the position of the wedge block 7 is adjusted to install the support body 8 at different heights. When the wedge block 7 is adjusted, the bolt is passed through the entire length of the intermediate body 6 and connected to the support body 8 and fixed. The setting of the support body 8 can limit the position of the front pressure plate 13 through the guide mechanism.

[0026] When the installation height of the adjustment wedge block 7 changes, the installation height of the guide mechanism and the front pressure plate 13 changes accordingly, which can adjust the height of the front pressure plate 13 and adjust the height of the pressure plate 5 accordingly to meet the adaptation of the height adjustment, and finally realize the up and down adjustment of the height of the upper mold 4.

[0027] Please refer to Figure 2 The guide mechanism includes a No. 1 through-hole opened inside the full-length intermediate body 6, a No. 2 through-hole located inside the front pressure plate 13, and a screw hole opened on the support body 8. The No. 1 through-hole, the No. 2 through-hole and the screw hole are aligned in the front-to-back direction. The diameter of the No. 1 through-hole is larger than that of the No. 2 through-hole. The guide rod bolt 14 passes through the No. 1 through-hole, the No. 2 through-hole and is threadedly connected to the screw hole. A return spring 15 is installed inside the No. 1 through-hole, and the two ends of the return spring 15 are respectively in contact with the support body 8 and the front pressure plate 13;

[0028] An elastic mechanism for pressing the long wedge 9 is provided between the two adjacent front pressure plates 13. The elastic mechanism includes a connecting pressure plate 21 located between the two front pressure plates 13. The connecting pressure plate 21 is fixedly connected to the entire length intermediate body 6 by bolts, and a mounting hole is provided at a position aligned with the connecting pressure plate 21 and the long wedge 9. The inner wall of the mounting hole is threadedly connected to a hollow connecting sleeve 24, and the outer wall of the connecting sleeve 24 is threadedly connected to a No. 2 hexagonal nut 23. The connecting sleeve 24 is movably connected to one end of the long wedge 9 with a positioning bead 22, and a connecting spring 25 is abutted between one end of the inner wall of the connecting sleeve 24 and the positioning bead 22.

[0029] In this embodiment, when the two hydraulic cylinders 2 are in motion, the clamping mechanism 3 is also in motion, and the clamping mechanism 3 drives the front pressure plate 13 to move forward or backward. When the front pressure plate 13 moves, the second through hole in the front pressure plate 13 slides on the outer wall of the guide bolt 14, and squeezes the return spring 15, or the return spring 15 is reset to push the front pressure plate 13 back to its original position.

[0030] The elastic mechanism is used to tighten the long wedge 9 to prevent the long wedge 9 from not fitting into the slide groove on the entire intermediate body 6. When the long wedge 9 moves, the positioning bead 22 cooperates with the connecting spring 23 to move, so that the long wedge 9 can always be tightened.

[0031] Please refer to Figure 2 、 Figure 3 and Figure 4 The clamping mechanism 3 includes a long wedge 9 fixedly connected between the output ends of the two hydraulic cylinders 2. A slide groove is provided on the entire intermediate body 6 for the long wedge 9 to slide left and right. The front end of the long wedge 9 extends through the outside of the slide groove. An extrusion slope 18 is formed on the outer side of the long wedge 9. The front end of the front pressure plate 13 is provided with a circular hole that extends to the rear end of the front pressure plate 13. The inner wall of the circular hole is threadedly connected with a spherical tightening screw 12. The end of the spherical tightening screw 12 close to the extrusion slope 18 is a hemispherical structure. The front end of the front pressure plate 13 is provided with a No. 1 hexagonal nut 11 threadedly connected to the spherical tightening screw 12; the inner wall of the circular hole is fixedly connected with a top ball column 10, and a hemispherical groove is formed at the contact position between the top ball column 10 and the hemispherical structure at one end of the spherical tightening screw 12. A pressure inclined surface that coincides with the extrusion inclined surface 18 is formed at the contact position between the top ball column 10 and the extrusion inclined surface 18.

[0032] In this embodiment: when the two hydraulic cylinders 2 act synchronously, the long wedge block 9 slides, and the extrusion inclined surface 18 acts synchronously. The moving extrusion inclined surface 18 contacts and squeezes the pressure inclined surface. At this time, the top surface ball column 10 moves back and forth under the extrusion, and the top surface ball column 10 pushes the front pressure plate 13 to move back and forth by pushing the spherical tightening screw 12.

[0033] Please refer to Figure 2 and Figure 3 A groove 17 is formed at the front end of the upper die 4 , and a positioning block 16 connected to the groove 17 is installed at the lower end of the front pressure plate 13 .

[0034] In this embodiment, the design of the groove 17 and the positioning block 16 can achieve that when the clamping mechanism 3 is released when the front pressure plate 13 moves forward, the positioning block 16 hooks the upper mold groove 1, so that the upper mold 4 will not fall directly downward.

[0035] Please refer to Figure 4 The output ends of the two hydraulic cylinders 2 are fixedly installed with connectors 19, and the docking position of one end of the long wedge block 9 and the connector 19 is provided with a plug hole, and a connecting pin 20 is inserted into the plug hole.

[0036] In this embodiment: the long wedge 9 can be fixed to the output ends of the two hydraulic cylinders 2 through the connecting head 19 and the connecting pin 20;

[0037] It should be noted that the hydraulic cylinder 2 as a power source is not the only solution. An electric cylinder, a screw drive, a cylinder or other linear motion method can be used to pull the long wedge block 9 to move left and right, and using the extrusion slope 18 on the long wedge block to push the front pressure plate 13 is an alternative solution.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic quick clamping device for a bending machine with an integrated wedge block, comprising a slide plate (1), characterized in that: Two hydraulic cylinders (2) are symmetrically installed at the lower front end of the slide plate (1). The lower front end of the slide plate (1) is located between the two hydraulic cylinders (2) and is fixedly connected to a pressure plate (5) by bolts. The pressure plate (5) in a locked state is used to fix the entire intermediate body (6). A clamping mechanism (3) is installed on the entire intermediate body (6). The two ends of the clamping mechanism (3) are respectively fixedly connected to the output ends of the two hydraulic cylinders (2). The clamping mechanism (3) is used to quickly clamp, install or disassemble the upper mold (4).

2. The hydraulic quick clamping device for a bending machine with an integrated wedge block according to claim 1, characterized in that: An adjusting wedge (7) is provided at the bottom end of the slide plate (1), and the adjusting wedge (7) is fixedly connected to the full-length intermediate body (6) by bolts. A supporting body (8) is provided below the adjusting wedge (7), and the top end of the supporting body (8) abuts against the bottom end of the adjusting wedge (7). A front pressure plate (13) is provided at the front end of the full-length intermediate body (6), and the supporting body (8) and the front pressure plate (13) are connected by a guide mechanism, and the guide mechanism allows the front pressure plate (13) to slide forward and backward.

3. The hydraulic quick clamping device for a bending machine with an integrated wedge block according to claim 2, characterized in that: The guide mechanism includes a No. 1 through hole opened inside the entire intermediate body (6), a No. 2 through hole located inside the front pressure plate (13), and a screw hole opened on the support body (8). The No. 1 through hole, the No. 2 through hole and the screw hole are aligned in the front-to-back direction. The diameter of the No. 1 through hole is larger than the diameter of the No. 2 through hole. The guide rod bolt (14) passes through the No. 1 through hole and the No. 2 through hole and is threadedly connected to the screw hole. A reset spring (15) is installed inside the No. 1 through hole. The two ends of the reset spring (15) are respectively in contact with the support body (8) and the front pressure plate (13). An elastic mechanism for pressing the long wedge (9) is provided between the two adjacent front pressure plates (13), and the elastic mechanism includes a connecting pressure plate (21) located between the two front pressure plates (13), the connecting pressure plate (21) is fixedly connected to the entire intermediate body (6) by bolts, and a mounting hole is provided at a position aligned with the connecting pressure plate (21) and the long wedge (9), the inner wall of the mounting hole is threadedly connected to a hollow connecting sleeve (24), the outer wall of the connecting sleeve (24) is threadedly connected to a No. 2 hexagonal nut (23), the connecting sleeve (24) is movably connected to a positioning bead (22) at one end close to the long wedge (9), and a connecting spring (25) is abutted between one end of the inner wall of the connecting sleeve (24) and the positioning bead (22).

4. The hydraulic quick clamping device for a bending machine with an integrated wedge block according to claim 3 is characterized in that: The clamping mechanism (3) includes a long wedge (9) fixedly connected between the output ends of the two hydraulic cylinders (2), a sliding groove for the long wedge (9) to slide left and right is provided on the whole-length intermediate body (6), the front end of the long wedge (9) extends to the outside of the sliding groove, and the outer side of the long wedge (9) is formed with an extrusion slope (18), the front end of the front pressure plate (13) is provided with a circular hole extending to the rear end of the front pressure plate (13), the inner wall of the circular hole is threadedly connected with a spherical tightening screw (12), the end of the spherical tightening screw (12) close to the extrusion slope (18) is in a hemispherical structure, and the front end of the front pressure plate (13) is provided with a No. 1 hexagonal nut (11) threadedly connected to the spherical tightening screw (12); A top spherical column (10) is fixedly connected to the inner wall of the circular hole, a hemispherical groove is formed at the contact position between the top spherical column (10) and the hemispherical structure of one end of the spherical tightening screw (12), and a pressure inclined surface that matches the extrusion inclined surface (18) is formed at the contact position between the top spherical column (10) and the extrusion inclined surface (18).

5. The hydraulic quick clamping device for a bending machine with an integrated wedge block according to claim 4, characterized in that: A groove (17) is provided at the front end of the upper die (4), and a positioning block (16) is installed at the lower end of the front pressure plate (13) and is connected to the groove (17).

6. The hydraulic quick clamping device for a bending machine with an integrated wedge block according to claim 4, characterized in that: The output ends of the two hydraulic cylinders (2) are both fixedly mounted with connectors (19), and a plug hole is provided at the docking position between one end of the long wedge block (9) and the connector (19), and a connecting pin (20) is inserted into the plug hole.

7. The hydraulic quick clamping device for a bending machine with an integrated wedge block according to claim 1, characterized in that: The hydraulic cylinder (2) can be replaced by an electric cylinder, a screw drive, or an air cylinder.

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