CN209902030U - Punching device of forming machine - Google Patents

Abstract

The utility model discloses a punching device for a forming machine. The technical scheme of the device includes a frame, a punching device is slidingly connected on the frame along the length direction of the frame, and a punching device is arranged on the frame for driving the punching. The driving mechanism sliding along the length direction of the frame, the punching device includes a workpiece frame that is slidably connected to the frame along the length direction of the frame, and the workpiece frame is provided with a first limit mechanism for limiting the horizontal displacement of the workpiece. A second limiting mechanism for limiting the vertical displacement of the workpiece is arranged on the upper part, which can ensure that the punching quality is stable and meets the requirements.

Description

A punching device for a forming machine

technical field

The utility model relates to the field of punching devices, in particular to a punching device of a forming machine.

Background technique

Cold bending refers to the plastic processing technology that continuously bends metal sheets and strips such as coils and strips in a transverse direction through multi-pass forming rolls arranged in sequence to make specific end profiles. A forming machine is a special machine used for cold forming. In the production process of the forming machine, the cold bending forming process is usually implemented in conjunction with the punching process to reduce the processing time of the workpiece, process the forming at one time, and improve the production efficiency.

In the utility model patent document with the publication number of CN206455046U, a combined adjustable punching device of an automatic forming machine is introduced, which includes a first punching die for punching, and the bottom of the first punching die passes through the base and the automatic forming The frame of the machine is connected, and the base can move laterally and longitudinally along the base. The lateral movement includes an adjustment nut arranged on the base, and the adjustment nut is provided with an adjustment screw, and the longitudinal movement includes a fixed block arranged on the frame. There are two types of fixing blocks, which are respectively arranged on the front and rear sides of the longitudinal direction of the base. There are adjustment screws longitudinally on the fixing block. The tail of the adjustment screw is located on one side of the base. extends to the base.

In the above structure, there is no device for positioning and fixing the workpiece in the first punching die used for punching. When the punching process is performed on the workpiece, the workpiece will inevitably deform and vibrate due to the force. If there is no positioning and fixing device, the position of the workpiece during the punching process is unstable, which can easily cause punching deviation and seriously affect the production quality.

Utility model content

In view of the deficiencies of the prior art, the purpose of the present invention is to provide a punching device for a forming machine, which can punch a plurality of holes at the same time and the punching position can be adjusted.

The above technical purpose of the present invention is achieved through the following technical solutions: a punching device for a forming machine, comprising a frame, on which a punching device is slidably connected along the length direction of the frame, and the machine The frame is provided with a drive mechanism for driving the punching device to slide along the length direction of the frame. The punching device includes a workpiece frame that is slidably connected to the frame along the length direction of the frame. A first limiting mechanism for limiting the horizontal displacement of the workpiece, and a second limiting mechanism for limiting the vertical displacement of the workpiece is provided on the workpiece holder.

By adopting the above technical solution, the user adjusts the position of the punching device on the machine tool through the driving mechanism, and then places the workpiece on the workpiece frame, and limits the horizontal and vertical directions of the workpiece through the first limit mechanism and the second limit mechanism. Due to the fixed action of the first limit mechanism and the second limit mechanism during the punching process, the workpiece will not have displacement and unnecessary deformation, which effectively ensures the processing of the punching hole. Effect.

Preferably, the first limiting mechanism includes a plurality of positioning bolts arranged on the workpiece frame in the vertical direction, the positioning bolts are threadedly connected with positioning heads, and the positioning bolts are symmetrically arranged along the width direction of the frame with a distance equal to Workpiece width.

By adopting the above technical solution, the diameter of the positioning head is larger than the diameter of the positioning bolt, and the positioning bolt is arranged on the moving path of the workpiece, the horizontal displacement of the workpiece is limited by the positioning head abutting on both sides of the workpiece, and the user rotates the positioning head The height of the positioning head can be adjusted, which is convenient to adjust according to the thickness of the workpiece.

Preferably, the second limiting mechanism includes a pressing rod that is threadedly connected to the workpiece frame in a vertical direction, and a pressing block is rotatably connected to the bottom end of the pressing rod in a direction perpendicular to the pressing rod. The number of blocks is two and arranged symmetrically along the length of the rack.

By adopting the above technical solution, the user rotates the pressing rod according to the thickness of the workpiece and adjusts the height of the pressing block to ensure that the upward rotation of the workpiece can be hindered by the pressing block during the punching process, thereby ensuring that the hole wall punched on the workpiece is vertical , the location is accurate.

Preferably, the drive mechanism includes a sliding seat fixed on the bottom of the workpiece frame, a synchronizing shaft is rotatably connected to the sliding seat along the width direction of the frame, and the frame is provided with a screw rod along the length direction of the frame, so The number of the screw rods is two, which are respectively meshed with the two ends of the synchronizing shaft through bevel gears.

By adopting the above technical solution, the user drives the synchronous shaft to rotate, the bevel gear meshes to drive the screw to rotate, and the screw connection and the rotary connection make the screw drive the sliding seat to slide along the length of the frame. The sliding driving force of the seat is evenly distributed, which effectively ensures the stability of the sliding movement and is convenient to drive.

Preferably, one end of the synchronous shaft is fixed with a servo motor for driving the rotation of the synchronous shaft, a displacement sensor is arranged on the sliding seat, a controller is arranged on the sliding seat, the displacement sensor, the controller and the Servo motor is electrically connected.

By adopting the above technical solution, the displacement sensor monitors the position of the workpiece rack on the frame in real time. Once the position of the workpiece rack deviates from the requirements of the processing position, the displacement sensor sends an electrical signal to the controller, starts the servo motor, drives the synchronous shaft to rotate, and adjusts the After the position, the displacement sensor sends an electrical signal to the controller again to stop the servo motor. As long as the servo motor does not rotate, the position of the workpiece frame is fixed under the self-locking property of the threaded connection, so as to realize the automatic adjustment of the position of the punching device and real-time feedback. Flexible processing.

Preferably, the punching device includes a punch that is slidably arranged on the workpiece frame along the vertical direction, the workpiece frame is provided with a template corresponding to the punch, and the bottom of the template is provided with a frosted sponge corresponding to the punch. The bottom of the template is rotatably connected with a buckle for fixing the frosted sponge, and a hydraulic cylinder for driving the punch to slide toward the template is fixed on the workpiece frame.

By adopting the above technical solution, when the punch is displaced toward the template and impacts the workpiece under the drive of the hydraulic cylinder, the frosted sponge will abut against the cutting edge of the punch, and the cutting edge of the punch will be automatically ground during the displacement process of the punch, and The frosted sponge can be soaked in lubricating oil and then fixed on the bottom of the template through the buckle, and the punch is lubricated while grinding, which effectively improves the punching quality.

Preferably, the workpiece rack is provided with a chute along the width direction of the frame, the positioning bolt is slidably connected to the sliding groove, and an insert for clamping the positioning bolt is arranged in the sliding groove. An adjustment bolt abutting against the positioning bolt is screwed along the direction of the chute.

By adopting the above technical solution, the user selects a suitable insert according to the width of the workpiece and places it in the chute, and then rotates the adjusting bolt to make the adjusting bolt abut the positioning bolt, and the positioning bolt is fixed by pressing force and friction, which is convenient for The workpiece adjusts the spacing of the positioning bolts, which is convenient to use.

Preferably, a rubber pad is fixed on the bottom surface of the pressing block.

By adopting the above technical solution, the flexibility of the rubber pad can avoid mutual abrasion between the pressing block and the workpiece, and effectively ensure that the roughness of the outer surface of the workpiece is not reduced.

To sum up, the utility model has the following beneficial effects:

1. Multiple holes can be punched at the same time, and the punching position can be adjusted;

2. Automatically adjust the punching position.

Description of drawings

Figure 1 is an overall view of this specific embodiment.

FIG. 2 is a schematic view of the structure of the workpiece holder of the specific embodiment.

FIG. 3 is a schematic structural diagram of the sliding seat of the specific embodiment.

In the figure: 1. Frame; 2. Workpiece frame; 21. Punch; 22. Template; 23. Scrub sponge; 24. Buckle; 25. Hydraulic cylinder; 26. Chute; 3. Positioning bolt; 31. Positioning head; 32, insert; 33, adjusting bolt; 4, pressing rod; 41, pressing block; 42, rubber pad; 5, sliding seat; 51, synchronous shaft; 52, screw rod; 53, servo motor; 54, Displacement sensor; 55. Controller.

Detailed ways

The present utility model will be described in further detail below in conjunction with accompanying drawings 1-3.

Referring to Fig. 1 or 2, a punching device of a forming machine includes a frame 1 which is rectangular in plan view, and a punching device is arranged on the frame 1. The punching device includes a workpiece frame 2, a first limit mechanism is provided on the workpiece frame 2 for the user to limit the horizontal displacement of the workpiece, and a second limit mechanism is provided on the workpiece frame 2 for the user to limit the vertical displacement of the workpiece. The punching device is slidably connected to the frame 1 along the length direction of the frame 1, and a driving mechanism is provided on the frame 1 for the user to drive the punching device to slide. The punching device includes a punch 21 slidably arranged on the workpiece frame 2 along the vertical direction, a template 22 is fixed on the bottom of the workpiece frame 2 corresponding to the punch 21 , and a hydraulic cylinder 25 connected with the punch 21 is fixed on the workpiece frame 2 . The bottom of the template 22 is provided with a circular frosted sponge 23 corresponding to the punch 21, and the bottom of the template 22 is rotatably connected with an L-shaped buckle 24 in the vertical direction. Array settings.

The user soaks the abrasive sponge 23 in lubricating oil and places it on the bottom of the template 22 , rotates the buckle 24 to make the buckle 24 abut against the abrasive sponge 23 , and fixes the abrasive sponge 23 on the bottom of the template 22 . After the position of the punching device on the frame 1 is adjusted by the driving mechanism, the workpiece is placed on the workpiece frame 2. During the punching process, the first limit mechanism and the second limit mechanism are used to limit the workpiece because the punching process is affected by The pressure is displaced or turned over, which affects the processing accuracy and processing effect. And when the punch 21 moves up and down through the template 22 in the vertical direction under the driving of the hydraulic cylinder 25, it will automatically grind and lubricate the cutting edge due to the abutment and friction with the frosted sponge 23, effectively preventing the punch 21 and the workpiece. Generate burrs and improve production quality.

Referring to FIG. 2 , the first limiting mechanism includes positioning pins 3 arranged on the workpiece frame 2 along the vertical direction. The number of positioning pins 3 is four and two are in a group, and the two sets of positioning pins 3 are along the width of the frame 1 . The directions are symmetrically arranged, the positioning pins 3 in the same group are symmetrically arranged along the length direction of the frame 1, and the spacing between the two sets of positioning pins 3 is equal to the width of the workpiece. The positioning bolt 3 is screwed with a positioning head 31 . In order to adapt to workpieces of different widths, the workpiece rack 2 is provided with a chute 26 along the width direction of the rack 1. The chute 26 is arranged corresponding to the positioning bolt 3, and the positioning bolt 3 is slidably connected with the sliding groove 26. An adjusting bolt 33 abutting against the positioning bolt 3 is screwed into the sliding groove 26 along the direction of the sliding groove 26 on the insert block 32 abutting against the positioning bolt 3 .

The user selects the appropriate insert 32 according to the width of the workpiece, and then rotates the adjusting bolt 33 to make the insert 32 and the adjusting bolt 33 abut with the positioning bolt 3 from two directions, respectively, and the positioning bolt 3 is fixed by friction and pressing force. In the chute 26, when the width of the workpiece is changed, the spacing between the positioning pins 3 can be freely changed as required, thereby expanding the use range of the punching device and facilitating use.

Referring to FIG. 2 , the second limiting mechanism includes a pressing rod 4 that is threadedly connected to the workpiece frame 2 in the vertical direction. The pressing block 41 corresponds to two pressing rods 4 and the two pressing rods 4 are symmetrically arranged on the pressing block 41 . The number of the pressing blocks 41 is two and is symmetrically arranged along the length direction of the frame 1 , and a rubber pad 42 is fixed on the bottom surface of the pressing blocks 41 . The user only needs to rotate the pressing rod 4 to drive the pressing block 41 to slide up and down in the vertical direction, thereby changing the height of the pressing block 41 on the workpiece frame 2, which is convenient to match the thickness of the workpiece, and can be used for workpieces of different thicknesses. The vertical displacement and rotation are well limited. The rubber pad 42 avoids the direct contact between the pressing block 41 and the workpiece, prevents the outer surface of the workpiece from being worn due to abutting the pressing block 41 with the workpiece when limiting the workpiece, and effectively ensures the processing quality of the workpiece.

Referring to FIG. 3 , the driving mechanism includes a sliding seat 5 fixed on the bottom of the workpiece frame 2 , a synchronizing shaft 51 rotatably connected to the sliding seat 5 , and the synchronizing shaft 51 is arranged along the width direction of the frame 1 . The rack 1 is screwed with screws 52 along the length direction of the rack 1 . The number of the screws 52 is two and is symmetrically arranged on the two long sides of the rack 1 along the width direction of the rack 1 . The end of the screw 52 close to the synchronous shaft 51 is meshed with the end of the synchronous shaft 51 close to the screw 52 through a bevel gear. The user only needs to drive the synchronizing shaft 51 to rotate, and drive the screw rod 52 to rotate through the meshing of the bevel gear. Since the screw rod 52 is threadedly connected with the frame 1, the screw rod 52 will slide along the length of the frame 1 and drive the sliding seat 5 along the frame. 1 Lengthwise movement. Therefore, the position change of the sliding seat 5 on the rack 1 along the length direction of the rack 1 can be conveniently controlled.

Referring to FIG. 3 , in order to avoid the cumbersome adjustment of the punching device by manpower, a servo motor 53 is fixed at one end of the synchronizing shaft 51 for the user to drive the synchronizing shaft 51 to rotate. A displacement sensor 54 is fixed on the sliding base 5 , and a controller 55 is also fixed on the sliding base 5 for the user to control the working time and forward and reverse rotation of the servo motor 53 . The displacement sensor 54, the servo motor 53 and the controller 55 are electrically connected and can transmit electrical signals to each other. As long as the servo motor 53 does not rotate, the screw 52 will not rotate, and the position of the punching device is automatically fixed due to the self-locking property of the screw connection. The user determines the position of the workpiece holder 2 through the displacement sensor 54. Once the position of the workpiece holder 2 measured by the displacement sensor 54 changes, a signal will be sent to the controller 55 to turn on the servo motor 53 to drive the synchronizing shaft 51 to rotate. The screw 52 is rotated, and the position of the workpiece holder 2 is changed. When the designated position is reached, the displacement sensor 54 sends a signal to the workpiece holder 2 again to turn off the servo motor 53 and fix the position of the workpiece holder 2 . Thus, the processing flexibility and automation of the molding machine are realized.

The specific implementation process: the user places the frosted sponge 23 soaked in lubricating oil on the bottom surface of the template 22 and rotates the buckle 24 to fix it, and then changes the position of the punching device through the driving mechanism, and places the workpiece on the workpiece frame 2, so that the workpiece is located in the Between the positioning bolts 3 and below the positioning head 31, the pressing rod 4 is rotated according to the thickness of the workpiece, so that the gap between the pressing block 41 and the workpiece is extremely small, so as to ensure that the positioning bolt 3 limits the horizontal displacement of the workpiece, and the pressing block 41 Restrict the vertical displacement and rotation of the workpiece, and then drive the punch 21 to move toward the workpiece and the template 22 through the hydraulic cylinder 25. During the punching process of the punch 21, it abuts with the frosted sponge 23, and is restored after being lubricated and ground by the frosted sponge 23. The initial position ensures the sharpness of the cutting edge of the punch 21, the accurate punching position, the fewer punching burrs, and the high processing quality of the workpiece.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides a punching device of make-up machine, includes frame (1), its characterized in that: the punching device is characterized in that the punching device is connected to the frame (1) in a sliding manner along the length direction of the frame (1), a driving mechanism used for driving the punching device to slide along the length direction of the frame (1) is arranged on the frame (1), the punching device comprises a workpiece frame (2) connected to the frame (1) in a sliding manner along the length direction of the frame (1), a first limiting mechanism used for limiting the horizontal displacement of a workpiece is arranged on the workpiece frame (2), and a second limiting mechanism used for limiting the vertical displacement of the workpiece is arranged on the workpiece frame (2).

2. The punching apparatus of a molding machine according to claim 1, characterized in that: first stop gear includes along a plurality of pilot bolts (3) of vertical direction setting on work rest (2), threaded connection has locating head (31) on pilot bolt (3), pilot bolt (3) set up and the interval equals the work piece width along frame (1) width direction symmetry.

3. The punching apparatus of a molding machine according to claim 2, characterized in that: the second limiting mechanism comprises a pressing rod (4) which is in threaded connection with the workpiece frame (2) along the vertical direction, pressing blocks (41) are connected to the bottom end of the pressing rod (4) in a rotating mode along the direction perpendicular to the pressing rod (4), and the number of the pressing blocks (41) is two and the pressing blocks are symmetrically arranged along the length direction of the rack (1).

4. The punching apparatus of a molding machine according to claim 3, characterized in that: the driving mechanism comprises a sliding seat (5) fixed at the bottom of the workpiece frame (2), the sliding seat (5) is rotatably connected with a synchronizing shaft (51) along the width direction of the frame (1), the frame (1) is provided with screw rods (52) along the length direction of the frame (1), the screw rods (52) are two and are respectively meshed with the two ends of the synchronizing shaft (51) through bevel gears, the screw rods (52) are in threaded connection with the frame (1), and the screw rods (52) are rotatably connected with the sliding seat (5).

5. The punching apparatus of a molding machine according to claim 4, characterized in that: one end of synchronizing shaft (51) is fixed with and is used for driving synchronizing shaft (51) pivoted servo motor (53), be equipped with displacement sensor (54) on seat (5) that slides, be equipped with controller (55) on seat (5) that slides, displacement sensor (54), controller (55) and servo motor (53) electricity are connected.

6. The punching apparatus of a molding machine according to claim 5, characterized in that: punching device includes drift (21) of setting on work rest (2) that slides along vertical direction, work rest (2) are gone up and are equipped with template (22) corresponding drift (21), template (22) bottom corresponds drift (21) and is provided with dull polish sponge (23), template (22) bottom swivelling joint has buckle (24) that are used for fixed dull polish sponge (23), be fixed with on work rest (2) and be used for driving drift (21) towards pneumatic cylinder (25) that template (22) slided.

7. The punching apparatus of a molding machine according to claim 2 or 6, characterized in that: the workpiece holder (2) is provided with a sliding groove (26) along the width direction of the rack (1), the positioning bolt (3) is connected with the sliding groove (26) in a sliding manner, an embedded block (32) used for clamping the positioning bolt (3) is arranged in the sliding groove (26), and an adjusting bolt (33) abutted against the positioning bolt (3) is connected in the sliding groove (26) along the direction of the sliding groove (26) in a threaded manner.

8. The punching apparatus of a molding machine according to claim 3, characterized in that: and a rubber pad (42) is fixed on the bottom surface of the pressing block (41).

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