Punching guide positioning device for punching machine

Abstract

The present invention belongs to the technical field of punching machines, and particularly relates to a punching and cutting guiding and positioning device, which is arranged at a workbench, and a first conveyor belt is arranged in the middle of the workbench. The guiding and positioning device comprises an adjusting component, a guiding and clamping component and a punching and cutting positioning component. The workbench is provided with a first through hole, and the adjusting component moves in the first through hole; the workbench is provided with a second through hole, and the guiding and clamping component moves in the second through hole; the punching and cutting positioning component comprises a first positioning pressure plate and a second positioning pressure plate, and a rotating plate is rotatably arranged at the bottom of the first positioning pressure plate and the second positioning pressure plate, and a driving cylinder is hingedly arranged at the bottom of the workbench, and the movable end of the driving cylinder is rotatably connected to the rotating plate. By this, the present invention has the functions of integrating the conveying and punching and positioning into one, guiding the metal workpiece to avoid its deviation during movement, and positioning the metal workpiece to ensure the accuracy of its punching and cutting position.

Description

Technical Field

[0001] The invention belongs to the technical field of punching machines, and in particular relates to a punching guide positioning device for a punching machine. Background Art

[0002] At present, metal workpiece processing is an important process in the mechanical processing industry. The existing processing procedures include grinding, polishing, punching and other links. Among them, punching is a relatively important part. Punching refers to the process of punching the workpiece into the required shape. Therefore, punching is a widely used processing method. In fact, the use of the punch to press down will generate force on the workpiece to process the surface of the workpiece.

[0003] Before the punching process, the metal workpiece needs to be transferred to the punching position of the punch. The workpiece may shift during the transfer process, so the workpiece needs to be guided to avoid its shift; the metal workpiece needs to be positioned and fixed during the punching process to prevent it from tilting to ensure the accuracy of the punching position; at the same time, the prior art adjusts and guides the metal workpiece before punching and the final punching positioning is performed by different equipment respectively, and the adjustment, guiding and punching are not integrated into one, which increases the labor intensity of the staff.

[0004] By searching the prior art, the following related patents were found:

[0005] Chinese invention patent, publication number CN102975230A, a punching guide positioning jig and method, including a first limit block: the first limit block is fixed on the working surface of the punching machine and is close to the side edge of the punching material; through the action of the first limit block, the position of the punching material that continuously passes through the working surface of the punching machine is limited so that it passes through the working surface at a predetermined position, avoiding the deviation of the punching material, and providing guidance and positioning for the punching material. However, the metal workpiece to be punched is often inconsistent in size and shape, and the first limit block needs to be adjusted continuously according to the size of the metal workpiece entering the device; the jig in the prior art also includes a bracket fixed on the working surface of the punching machine, and the first limit block is connected to the bracket and fixed to the working surface of the punching machine through the bracket. The bracket is provided with a fixing rod, which is located above the punching material and leaves a gap between the fixing rod and the working surface for the punching material to pass through. In addition to limiting the width direction of the punching material, the fixing rod is also limited above the punching material so that it can only be attached to the working surface in the vertical direction. During the conveying process of the metal workpiece, the fixing rod can only limit the metal workpiece when it passes below it. However, when the metal workpiece is conveyed to the point where it is misaligned with the fixing rod, the fixing rod can no longer limit the metal workpiece in the vertical and horizontal directions during the conveying process. Summary of the invention

[0006] The present invention provides a punching guide and positioning device, which can guide a metal workpiece to avoid deviation during its movement; and can position the metal workpiece to ensure the accuracy of its punching position.

[0007] The technical solution of the present invention is implemented as follows: a punching guide positioning device for a punch press is arranged at a workbench, a punching station is arranged at one end of the workbench, a punch is arranged above the punching station, and a first conveyor belt is fixedly arranged in the middle of the workbench along its length direction;

[0008] The guide positioning device comprises an adjustment component, a guide pressing component and a punching positioning component. The front and rear sides of the workbench are respectively provided with first through holes perpendicular to the conveying direction of the first conveyor belt, and the adjustment component moves forward and backward in the first through holes.

[0009] The front and rear sides of the middle part of the workbench are provided with second through holes parallel to the conveying direction of the first conveyor belt, and the guide clamping assembly moves left and right in the second through hole. When the guide clamping assembly moves synchronously with the first conveyor belt toward the punch, the guide clamping assembly clamps the top surface and side surface of the metal workpiece;

[0010] The punching positioning assembly includes a first positioning platen and a second positioning platen rotatably arranged on the front and rear sides of the workbench, a rotating plate is rotatably arranged between the bottom of the first positioning platen and the second positioning platen, a driving cylinder is hingedly arranged at the bottom of the workbench, and the movable end of the driving cylinder is rotatably connected to the rotating plate. When the punch is punching, the first positioning platen and the second positioning platen press the top surface of the metal workpiece.

[0011] As a preferred embodiment, a first motor is fixedly installed in the workbench, a double-headed screw is fixedly installed at the movable end of the first motor, each thread section of the double-headed screw is threadedly connected to the first base, an adjustment assembly is arranged on the first base, the adjustment assembly includes a second motor, the second motor is fixedly connected to the first base, an eccentric shaft is fixedly installed on the rotating shaft of the second motor, a straightening block is fixedly installed at the end of the eccentric shaft away from the second motor, the eccentric shaft is movably arranged in the first through hole, and the straightening block is located on the side of the first conveyor belt.

[0012] As a preferred embodiment, a groove is opened on the side of the straightening block opposite to the first conveyor belt, a roller is arranged in the groove, the upper and lower ends of the roller are respectively rotatably matched with the upper and lower side walls of the groove, and the roller is located above the first conveyor belt.

[0013] As a preferred embodiment, a third motor is fixedly arranged in the workbench, a driving screw is fixedly arranged on the rotating shaft of the third motor, the surface of the driving screw is threadedly connected to the second base, a driving box is slidably arranged at the bottom of the workbench, and the guide clamping assembly includes a driving cylinder fixedly arranged on the second base, a driving block is fixedly arranged on the movable end of the driving cylinder, the upper part of the driving block is movably arranged in the driving box, and connecting blocks are fixedly arranged on the front and rear sides of the top of the driving block, respectively, and the front and rear connecting blocks are both located in the driving box, and a caliper is hingedly arranged on the end of each connecting block away from the driving block, and a second through hole is arranged on the top of the caliper.

[0014] As a preferred embodiment, movable holes corresponding to the caliper are respectively opened on the front and rear sides of the top of the driving box, and the caliper is arranged to pass through the movable hole. A cylindrical first limit rod and a second limit rod are fixedly arranged in the movable hole. The first limit rod is arranged close to the center of the driving box, and the second limit rod is arranged away from the center of the driving box. An inclined surface is arranged on the side of the caliper close to the middle of the driving box, and the inclined surface is abutted against the first limit rod. A depression is arranged on the side of the caliper away from the driving box, and the second limit rod is movably arranged in the depression.

[0015] As a preferred embodiment, a clamping block is vertically and fixedly arranged on the top of the caliper, and the clamping block is movably arranged above the first conveyor belt.

[0016] As a preferred embodiment, a mounting seat is hingedly provided at the bottom of the driving cylinder, and the mounting seat is fixedly arranged in the workbench. A buckle is rotatably provided on one side of one corner of the rotating plate, and the buckle is fixedly connected to the movable end of the driving cylinder. A vertical plate is fixedly provided in the workbench, and a rotating shaft is vertically and fixedly provided in the middle of the rotating plate, and the end of the rotating shaft facing away from the rotating plate is rotatably connected to the vertical plate.

[0017] As a preferred embodiment, the first connecting rod and the second connecting rod are rotatably arranged at the other two corners of the rotating plate, and two first connecting rods and the second connecting rods are arranged at intervals on the left and right. Two first positioning pressure plates are arranged at intervals on the left and right. The top end of the first connecting rod is rotatably connected to the first positioning pressure plate, and the two first positioning pressure plates are respectively located on the left and right sides of the punching station. Two second positioning pressure plates are arranged at intervals on the left and right. The top end of the second connecting rod is rotatably connected to the second positioning pressure plate, and the two second positioning pressure plates are respectively located on the left and right sides of the punching station.

[0018] As a preferred embodiment, a first hinge seat corresponding to the first positioning pressure plate is fixedly provided on the front side of the workbench, and the middle part of the first positioning pressure plate is hinged to the first hinge seat. A second hinge seat corresponding to the second positioning pressure plate is fixedly provided on the rear side of the workbench, and the middle part of the second positioning pressure plate is hinged to the second hinge seat.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are:

[0020] The metal workpiece to be punched is conveyed by the first conveyor belt. When the metal workpiece reaches the adjusting component, the adjusting component moves in the first through hole toward the first conveyor belt. When the adjusting component moves in the first through hole to a position in contact with the side of the metal workpiece and contacts with the side of the metal workpiece, the position of the metal workpiece is pushed to move by the movement of the adjusting component, thereby adjusting the position of the metal workpiece. The adjusted metal workpiece is conveyed to the guide and clamping component along the first conveyor belt, and is clamped on the first conveyor belt by the guide and clamping component to avoid the metal workpiece adjusted by the adjustment component from being offset. At the same time, the guide and clamping component moves synchronously with the first conveyor belt to transport the metal workpiece to the punching station. The punching positioning component rotates at the punching station to clamp the metal workpiece to avoid the metal workpiece from shaking and offsetting when the punch punches the metal workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 for Figure 1 The schematic diagram of the structure without the caliper;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure in which the first conveyor belt, the second conveyor belt and the upper horizontal plate of the workbench are removed;

[0025] Figure 4 The right side structural diagram of the adjustment component is shown;

[0026] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0027] Figure 6 It is a schematic diagram of the front structure of the guide clamping assembly;

[0028] Figure 7 It is a left side cross-sectional view of the guide clamping assembly;

[0029] Figure 8 It is a schematic diagram of the structure of the punching and positioning assembly;

[0030] Fig. 9 for Figure 8The structural diagram without the punching station;

[0031] Fig.10 This is a schematic diagram of the front side structure of the punching and positioning component.

[0032] In the figure, 1-punching station; 2-punch; 3-first conveyor belt; 4-first through hole; 5-second through hole; 6-first positioning platen; 7-second positioning platen; 8-rotating plate; 9-driving cylinder; 10-first motor; 11-double-headed screw; 12-first base; 13-second motor; 14-eccentric shaft; 15-straightening block; 16-groove; 17-roller; 18-third motor; 19-driving screw; 20-second base; 21 -driving box; 22-driving cylinder; 23-driving block; 24-connecting block; 25-caliper; 26-movable hole; 27-first limiting rod; 28-second limiting rod; 29-inclined surface; 30-depression; 31-pressing block; 32-mounting seat; 33-buckle; 34-vertical plate; 35-rotating shaft; 36-first connecting rod; 37-second connecting rod; 38-first articulated seat; 39-second articulated seat; 40-working table; 41-second conveyor belt. DETAILED DESCRIPTION

[0033] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 10 As shown, a punching guide positioning device for a punching machine is arranged at a workbench 40, a punching station 1 is arranged at one end of the workbench 40, a punch 2 is arranged above the punching station 1, a first conveyor belt 3 and a second conveyor belt 41 are fixedly arranged along the length direction of the middle of the workbench 40, and the first conveyor belt 3 and the second conveyor belt 41 are respectively located on the left and right sides of the punching station 1;

[0035] The guide positioning device includes an adjustment component, a guide pressing component and a punching positioning component. The front and rear sides of the workbench 40 are respectively provided with first through holes 4 perpendicular to the conveying direction of the first conveyor belt 3. The adjustment component moves forward and backward in the first through holes 4.

[0036] The workbench 40 is a folded structure formed by two front and rear vertical plates and two upper and lower horizontal plates. The first through hole 4 and the second through hole 5 are arranged on the upper horizontal plate. The vertical plate will not interfere with the adjustment component and the guide clamping component.

[0037] The front and rear sides of the middle of the workbench 40 are provided with second through holes 5 parallel to the conveying direction of the first conveyor belt 3. The guide and clamping assembly moves left and right in the second through hole 5. When the guide and clamping assembly moves synchronously with the first conveyor belt 3 toward the punch direction, the guide and clamping assembly clamps the top and side surfaces of the metal workpiece.

[0038] The punching positioning assembly includes a first positioning plate 6 and a second positioning plate 7 rotatably arranged on the front and rear sides of the workbench 40, a rotating plate 8 is rotatably arranged between the bottom of the first positioning plate 6 and the second positioning plate 7, and a driving cylinder 9 is hingedly arranged at the bottom of the workbench 40. The movable end of the driving cylinder 9 is rotatably connected to the rotating plate 8. When the punch 2 is punching, the first positioning plate 6 and the second positioning plate 7 press the top surface of the metal workpiece.

[0039] The metal workpiece to be punched is conveyed by the first conveyor belt 3. When the metal workpiece arrives at the adjusting component, the adjusting component moves in the first through hole 4 toward the center of the first conveyor belt 3. When the adjusting component moves in the first through hole 4 to a position in contact with the side of the metal workpiece and contacts with the side of the metal workpiece, the movement of the adjusting component pushes the metal workpiece to move, thereby adjusting the position of the metal workpiece. The straightened metal workpiece is conveyed to the guide and clamping component along the first conveyor belt 3, and is clamped on the first conveyor belt 3 by the guide and clamping component to avoid the metal workpiece being offset after adjustment by the adjusting component. At the same time, the guide and clamping component moves synchronously with the first conveyor belt 3 to transport the metal workpiece to the punching station 1. The punching positioning component rotates at the punching station 1 to clamp the metal workpiece to avoid shaking and offsetting of the metal workpiece when the punch 2 punches the metal workpiece. This process integrates the adjustment, conveying and positioning of the metal workpiece, thereby improving the working efficiency during punching of the metal workpiece.

[0040] A first motor 10 is fixedly arranged in the workbench 40, a double-headed screw 11 is fixedly arranged at the movable end of the first motor 10, each thread section of the double-headed screw 11 is threadedly connected to a first base 12, an adjustment component is arranged on the first base 12, the adjustment component includes a second motor 13, the second motor 13 is fixedly connected to the first base 12, an eccentric shaft 14 is fixedly arranged on the rotating shaft of the second motor 13, a straightening block 15 is fixedly arranged at one end of the eccentric shaft 14 away from the second motor 13, the eccentric shaft 14 is movably arranged in the first through hole 4, that is, it moves back and forth in the first through hole 4, and the straightening block 15 is located at the first motor 13. On the side of the conveyor belt 3, the second motor 13 rotates to drive the double-headed screw 11 to rotate. Since each thread section of the double-headed screw 11 is threadedly connected with a first base 12, the number of first bases 12 is two, and two adjustment components are also provided and fixed on the first bases 12 respectively. When the first motor 10 rotates to drive the double-headed screw 11 to rotate, the two first bases 12 on the double-headed screw 11 move relative to each other or move away from each other. When the metal workpiece reaches the adjustment component, the two first bases 12 move relative to each other, driving the adjustment components fixed on each first base 12 to move relative to each other. At this time, the eccentric shaft 14 Move toward the center of the first conveyor belt 3 in the first through hole 4. When the straightening block 15 reaches the metal workpiece as the eccentric shaft 14 moves, the second motor 13 rotates to drive the eccentric shaft 14 to rotate. The rotation of the eccentric shaft 14 drives the straightening blocks 15 to move to the positions against the side surfaces of the metal workpiece on both sides of the first conveyor belt 3. When the two straightening blocks 15 are against the side surfaces of the metal workpiece, the position of the metal workpiece is changed to the position where the surfaces of the two straightening blocks 15 are fitted. The position of the metal workpiece is adjusted by the side surfaces of the metal workpiece being against the side surfaces of the two straightening blocks 15. Therefore, the position of the two straightening blocks 15 is changed. The adjustment process of the metal workpiece is realized. In this process, the position of the metal workpiece is adjusted by the second motor 13 driving the eccentric shaft 14 to move. The eccentric shaft 14 drives the two straightening blocks 15 to move and contact the front and rear sides of the metal workpiece, and pushes the metal workpiece to be completely located between the two straightening blocks 15. After the position adjustment of the metal workpiece is completed, the two first bases 12 move away from each other, driving the adjustment components fixed on each first base 12 to move away from each other. At this time, the eccentric shaft 14 moves in the first through hole 4 in a direction away from the center of the first conveyor belt 3, and the metal workpiece reaches the guide clamping assembly and is clamped by the guide clamping assembly.

[0041] The adjustment process of the adjustment component includes two steps: the first step is that after the two first bases 12 on the double-headed screw 11 move relative to each other, the adjustment components of different widths can be adjusted to adapt to metal workpieces of different widths, increasing the versatility of the adjustment component; the second step is that the eccentric shaft 14 rotates so that the side of the metal workpiece abuts against the side of the two straightening blocks 15, so that the straightening blocks 15 fine-tune the position of the metal workpiece. Taking a square metal workpiece as an example, after only the first step of adjustment, the two diagonal corners of the metal workpiece may be pressed, and in most cases, the square metal workpiece needs to be adjusted to a position where its side is parallel to the side of the first conveyor belt 3. Therefore, through the contact between the straightening block 15 and the metal workpiece, the straightening block 15 moves under the drive of the eccentric shaft 14 to push the metal workpiece to a position parallel to the first conveyor belt 3, thereby achieving fine-tuning of the metal workpiece.

[0042] A groove 16 is provided on the side of the straightening block 15 opposite to the first conveyor belt 3, and a roller 17 is arranged in the groove 16. The upper and lower ends of the roller 17 are rotatably cooperated with the upper and lower side walls of the groove 16 respectively. The roller 17 is located above the first conveyor belt 3. When the straightening block 15 contacts the side surface of the metal workpiece to adjust it, the first conveyor belt 3 continues to move, so the metal workpiece moves accordingly, and is assisted in its transmission by the roller 17, so as to avoid the metal workpiece being stuck between the two straightening blocks 15 when the straightening block 15 straightens the metal workpiece.

[0043] A third motor 18 is fixedly arranged in the workbench 40, a driving screw 19 is fixedly arranged on the rotating shaft of the third motor 18, a second base 20 is threadedly connected to the surface of the driving screw 19, a driving box 21 is slidably arranged at the bottom of the workbench 40, a slider is fixedly arranged on the top of the driving box 21 (i.e., the opposite surface of the driving box 21 and the bottom of the workbench 40), a guide rail is fixedly arranged on the bottom surface of the workbench 40 (i.e., the opposite surface of the workbench 40 and the driving box 21), the slider is slidably arranged on the guide rail, and the sliding cooperation between the slider and the guide rail realizes the guiding and pressing assembly on the workbench 4 0, the guide clamping assembly includes a driving cylinder 22 fixedly arranged on the second base 20, a driving block 23 is fixedly arranged on the movable end of the driving cylinder 22, the upper part of the driving block 23 is movably arranged in the driving box 21, and connecting blocks 24 are fixedly arranged on the front and rear sides of the top of the driving block 23, respectively, and the front and rear connecting blocks 24 are both located in the driving box 21, and a caliper 25 is respectively hingedly arranged at one end of each connecting block 24 away from the driving block 23, and the top of the caliper 25 is arranged to pass through the second through hole 5, and the caliper 25 moves left and right in the second through hole 5.

[0044] Active holes 26 corresponding to the caliper 25 are respectively provided on the front and rear sides of the top of the drive box 21, and the caliper 25 is arranged through the active hole 26. A cylindrical first limiting rod 27 and a second limiting rod 28 are fixedly arranged in the active hole 26. The first limiting rod 27 is arranged close to the center of the drive box 21, and the second limiting rod 28 is arranged away from the center of the drive box 21. A slope 29 is arranged on the side of the caliper 25 close to the middle of the drive box 21, and the slope 29 is abutted against the first limiting rod 27. A recess 30 is arranged on the side of the caliper 25 away from the drive box 21, and the second limiting rod 28 is movably arranged in the recess 30. During the rotation of the caliper 25, the second limiting rod 28 rotates in the recess 30 on the side of the caliper 25. The arrangement of the second limiting rod 28 and the first limiting rod 27 can prevent the caliper 25 from being damaged when it rotates to the extreme position. At the same time, the rotation process of the caliper 25 is assisted by the rotation of the second limiting rod 28 in the recess 30.

[0045] The third motor 18 rotates to drive the driving screw 19 to rotate, and the driving screw 19 rotates to drive the second base 20 to move left and right in the workbench 40. The second base 20 moves left and right to drive the driving cylinder 22 and the components connected to the driving cylinder 22 to move left and right. The active end of the driving cylinder 22 drives the driving block 23 and the connecting block 24 installed on the driving block 23 to move up and down in the driving box 21. When the metal workpiece adjusted by the adjustment assembly reaches the guide clamping assembly, the active end of the driving cylinder 22 contracts, driving the driving block 23 and the front and rear connecting blocks 24. It moves downward in the drive box 21. At this time, the first limit rod 27 and the second limit rod 28 move upward at the fitting point with the caliper 25. The front and rear calipers 25 move downward in the front and rear second through holes 5. During the downward movement of the caliper 25, it contacts the upper surface of the metal workpiece and presses it onto the first conveyor belt 3. When the first conveyor belt 3 moves to the right to convey the metal workpiece, the second base 20 moves to the right synchronously under the driving action of the driving screw 19, driving the caliper 25 to move to the right in the second through hole 5, thereby realizing the pressing process during the transmission of the metal workpiece.

[0046] A clamping block 31 is vertically and fixedly arranged on the top of the caliper 25. The clamping block 31 is movably arranged above the first conveyor belt 3. The clamping block 31 realizes the process of clamping or loosening the metal workpiece as the caliper 25 rises and falls. When the metal workpiece is clamped and conveyed to the punching station, the caliper 25 loosens the metal workpiece and moves downward in the second through hole 5. By rotating the driving screw 19, the second base 20 moves to the left, driving the caliper 25 to move to the left in the second through hole 5 to the adjustment component, and clamps another metal workpiece again. During the transmission of the metal workpiece, the caliper 25 presses the side of the metal workpiece, and the pressing block 31 fixed on the caliper 25 abuts against the top surface of the metal workpiece, pressing the metal workpiece on the first conveyor belt 3 in the vertical direction. Since the guide pressing assembly moves toward the punching station 1 synchronously with the first conveyor belt, the guide pressing assembly will always press the metal workpiece on the surface of the first conveyor belt 3. As the metal workpiece moves toward the punching station 1, the metal workpiece is clamped and limited in both the horizontal and vertical directions to prevent it from being offset.

[0047] A mounting seat 32 is hingedly provided at the bottom of the driving cylinder 9, and the mounting seat 32 is fixedly arranged in the workbench 40. The front side surface of the rotating plate 8 is triangular in shape, and the vertical section of the rotating plate 8 is also triangular in shape. A buckle 33 is rotatably provided on one side of one corner of the rotating plate 8, and the buckle 33 is fixedly connected to the movable end of the driving cylinder 9. A vertical plate 34 is fixedly provided in the workbench 40, and a rotating shaft 35 is vertically and fixedly provided in the middle of the rotating plate 8, and the end of the rotating shaft 35 facing away from the rotating plate 8 is rotatably connected to the vertical plate 34. The other two corners of the rotating plate 8 are rotatably provided with a first connecting rod 36 and a second connecting rod 37, two of which are arranged at intervals on the left and right, two of which are arranged at intervals on the left and right, the top of the first connecting rod 36 is rotatably connected to the first positioning platen 6, the two first positioning platens 6 are respectively located on the left and right sides of the punching station 1, two of which are arranged at intervals on the left and right sides of the second positioning platen 7, the top of the second connecting rod 37 is rotatably connected to the second positioning platen 7, the two second positioning platens 7 are respectively located on the left and right sides of the punching station 1. A first hinge seat 38 corresponding to the first positioning platen 6 is fixedly provided on the front side of the workbench 40, the middle part of the first positioning platen 6 is hinged to the first hinge seat 38, and a second hinge seat 39 corresponding to the second positioning platen 7 is fixedly provided on the rear side of the workbench 40, the middle part of the second positioning platen 7 is hinged to the second hinge seat 39.

[0048] When the metal workpiece is transferred to the punching station 1, the telescopic end of the driving cylinder 9 extends out to drive the rotating plate 8 to rotate at the vertical plate 34. During this process, one end of the driving cylinder 9 rotates at the mounting seat 32, and the other end drives the buckle 33 to rotate at the rotating plate 8. During the rotation of the rotating plate 8, the first connecting rod 36 and the second connecting rod 37 at the other two corners of the rotating plate 8 rotate, and synchronously drive the first positioning pressure plate 6 and the second positioning pressure plate 7 to rotate. During this process, the middle part of the first positioning pressure plate 6 and the middle part of the second positioning pressure plate 7 rotate at the first hinge seat 38 and the second hinge seat 39, and the first positioning pressure plate 6 and the second positioning pressure plate 7 rotate on the front and rear sides of the workbench 40 to vertically press the workpiece entering the punching station 1 to prevent the metal workpiece from shaking when the punch 2 is punching. When the punch 2 is separated from the metal workpiece after punching, the metal workpiece and the punch 2 may be relatively stationary. At this time, the first positioning plate 6 and the second positioning plate 7 limit the metal workpiece in the vertical direction to prevent the metal workpiece from moving with the punch. The first positioning plate 6 rotates at the first hinge seat 38 and the second positioning plate 7 rotates at the second hinge seat 39. This step not only achieves the vertical compression of the metal workpiece, but also the horizontal compression of the metal workpiece.

[0049] Taking a plate-shaped metal workpiece as an example, the working principle of the device is as follows: when the metal workpiece enters the first conveyor belt 3, as the first conveyor belt 3 moves, the metal workpiece reaches the straightening block 15, the first motor 10 drives the first base 12 to move, so that the two straightening blocks 15 fixedly mounted on the two eccentric shafts 14 move relatively to the metal workpiece in the first through hole 4, the second motor 13 drives the eccentric shaft 14 to rotate, and the eccentric shaft 14 drives the side of the straightening block 15 to contact the side of the metal workpiece, and the straightening process of the metal workpiece is realized through the synchronous action of the two straightening blocks 15. The side of the metal workpiece is flush with the side of the first conveyor belt 3. As the first conveyor belt 3 continues to move, the rotation of the roller 17 on the side of the straightening block 15 assists in conveying the metal workpiece. This process can not only realize the straightening adjustment of the metal workpiece but also convey it to the guide clamping assembly. When the metal workpiece reaches the position of the guide clamping assembly, the third motor 18 drives the screw 19 to rotate, and the second base 20 moves in the workbench 40 as the screw rotates, and the movable end of the driving cylinder 22 drives the driving block 23 and the connecting block 24 fixed on the driving block 23 in the driving box 21. The connection block 24 moves up and down, and the front and rear calipers 25 are driven to rotate at the ends of the connection block 24 during the up and down movement. The clamping block 31 on the top of the caliper 25 presses or relaxes the metal workpiece as the caliper 25 rotates. When the top of the caliper 25 rotates until the clamping block 31 contacts the surface of the metal workpiece, it is pressed against the first conveyor belt 3. While the first conveyor belt 3 moves, the second base 20 moves to the right synchronously with the first conveyor belt 3 on the screw rod, thereby realizing the process of clamping and conveying the metal workpiece, and conveying it to the punching positioning assembly. When the metal workpiece reaches the punching When cutting station 1, the telescopic end of the driving cylinder 9 extends out to drive the rotating plate 8 to rotate at the vertical plate 34, and the first connecting rod 36 and the second connecting rod 37 at the other two corners of the rotating plate 8 rotate, synchronously driving the first positioning pressure plate 6 and the second positioning pressure plate 7 to rotate. During this process, the middle part of the first mounting plate and the middle part of the second mounting plate rotate at the first hinge seat 38 and the second hinge seat 39, and the first mounting plate and the second mounting plate rotate at the front and rear sides of the workbench 40 to clamp the workpiece entering the punching station 1 to prevent the metal workpiece from shaking when the punch 2 is punching.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching guide positioning device for a punching machine, arranged at a workbench (40), wherein a punching station (1) is arranged at one end of the workbench (40), and a punch (2) is arranged above the punching station (1), characterized in that: A first conveyor belt (3) is fixedly arranged in the middle of the workbench (40) along its length direction; The guide positioning device comprises an adjustment component, a guide pressing component and a punching positioning component. The front and rear sides of the workbench (40) are respectively provided with first through holes (4) perpendicular to the conveying direction of the first conveyor belt (3). The adjustment component moves forward and backward in the first through holes (4); A second through hole (5) parallel to the conveying direction of the first conveyor belt (3) is provided on the front and rear sides of the middle of the workbench (40); the guide clamping assembly moves left and right in the second through hole (5); when the guide clamping assembly moves synchronously with the first conveyor belt (3) toward the punch, the guide clamping assembly clamps the top surface and side surfaces of the metal workpiece; The punching and positioning assembly comprises a first positioning plate (6) and a second positioning plate (7) which are rotatably arranged on the front and rear sides of the workbench (40); a rotating plate (8) is rotatably arranged between the bottoms of the first positioning plate (6) and the second positioning plate (7); a driving cylinder (9) is hingedly arranged at the bottom of the workbench (40); a movable end of the driving cylinder (9) is rotatably connected to the rotating plate (8); when the punch (2) is punching and cutting, the first positioning plate (6) and the second positioning plate (7) press the top surface of the metal workpiece; A first motor (10) is fixedly arranged in the workbench (40), a double-headed screw (11) is fixedly arranged at the movable end of the first motor (10), each thread section of the double-headed screw (11) is threadedly connected to a first base (12), the adjustment component is arranged on the first base (12), the adjustment component comprises a second motor (13), the second motor (13) is fixedly connected to the first base (12), an eccentric shaft (14) is fixedly arranged on the rotating shaft of the second motor (13), a straightening block (15) is fixedly arranged at one end of the eccentric shaft (14) away from the second motor (13), the eccentric shaft (14) is movably arranged in the first through hole (4), and the straightening block (15) is located on the side of the first conveyor belt (3); A groove (16) is provided on a side of the straightening block (15) opposite to the first conveyor belt (3), a roller (17) is arranged in the groove (16), and the upper and lower ends of the roller (17) are respectively rotatably matched with the upper and lower side walls of the groove (16), and the roller (17) is located above the first conveyor belt (3); A third motor (18) is fixedly arranged in the workbench (40), a driving screw (19) is fixedly arranged on the rotating shaft (35) of the third motor (18), the surface of the driving screw (19) is threadedly connected to the second base (20), a driving box (21) is slidably arranged at the bottom of the workbench (40), the guiding and clamping assembly comprises a driving cylinder (22) fixedly arranged on the second base (20), a driving block (23) is fixedly arranged at the movable end of the driving cylinder (22), the upper part of the driving block (23) is movably arranged in the driving box (21), and connecting blocks (24) are fixedly arranged on the front and rear sides of the top of the driving block (23), respectively, and the front and rear two connecting blocks (24) are both located in the driving box (21), and a caliper (25) is hingedly arranged at one end of each connecting block (24) away from the driving block (23), and the top of the caliper (25) is arranged to pass through the second through hole (5); The front and rear sides of the top of the driving box (21) are respectively provided with movable holes (26) corresponding to the caliper (25), the caliper (25) is arranged to pass through the movable hole (26), and a cylindrical first limiting rod (27) and a second limiting rod (28) are fixedly arranged in the movable hole (26), the first limiting rod (27) is arranged close to the center of the driving box (21), and the second limiting rod (28) is arranged away from the center of the driving box (21), and a slope (29) is arranged on one side of the caliper (25) close to the middle of the driving box (21), and the slope (29) abuts against the first limiting rod (27), and a recess (30) is arranged on the side of the caliper (25) away from the driving box (21), and the second limiting rod (28) is movably arranged in the recess (30); A pressing block (31) is vertically and fixedly arranged on the top of the caliper (25), and the pressing block (31) is movably arranged above the first conveyor belt (3); When the first conveyor belt (3) moves rightward to convey the metal workpiece, the second base (20) moves rightward synchronously under the driving action of the driving screw (19), driving the caliper (25) to move rightward in the second through hole (5).

2. A punch cutting guide positioning device according to claim 1, characterized in that: A mounting seat (32) is hingedly provided at the bottom of the driving oil cylinder (9), and the mounting seat (32) is fixedly arranged in the workbench (40). A buckle (33) is rotatably provided on one side of one corner of the rotating plate (8), and the buckle (33) is fixedly connected to the movable end of the driving oil cylinder (9). A vertical plate (34) is fixedly provided in the workbench (40). A rotating shaft (35) is vertically and fixedly provided in the middle of the rotating plate (8), and one end of the rotating shaft (35) facing away from the rotating plate (8) is rotatably connected to the vertical plate (34).

3. A punch cutting guide positioning device according to claim 2, characterized in that: A first connecting rod (36) and a second connecting rod (37) are rotatably arranged at the other two corners of the rotating plate (8), two of the first connecting rod (36) and the second connecting rod (37) are arranged at intervals on the left and right, two of the first positioning pressing plates (6) are arranged at intervals on the left and right, the top end of the first connecting rod (36) is rotatably connected to the first positioning pressing plate (6), and the two first positioning pressing plates (6) are respectively located on the left and right sides of the punching station (1), two of the second positioning pressing plates (7) are arranged at intervals on the left and right, the top end of the second connecting rod (37) is rotatably connected to the second positioning pressing plate (7), and the two second positioning pressing plates (7) are respectively located on the left and right sides of the punching station (1).

4. A punch cutting guide positioning device according to claim 3, characterized in that: A first hinge seat (38) corresponding to the first positioning platen (6) is fixedly provided on the front side of the workbench (40), and the middle part of the first positioning platen (6) is hinged to the first hinge seat (38). A second hinge seat (39) corresponding to the second positioning platen (7) is fixedly provided on the rear side of the workbench (40), and the middle part of the second positioning platen (7) is hinged to the second hinge seat (39).

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