CN111842684B

CN111842684B - Workpiece fixing mechanism for hydraulic punching machine

Info

Publication number: CN111842684B
Application number: CN202010692864.XA
Authority: CN
Inventors: 陈习
Original assignee: Zhejiang Bailuyuan Technology Co ltd
Current assignee: Zhejiang Bailuyuan Technology Co.,Ltd.
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2022-01-07
Anticipated expiration: 2040-07-17
Also published as: CN111842684A

Abstract

The invention belongs to the technical field of hydraulic punches, and particularly relates to a workpiece fixing mechanism for a hydraulic punch, which comprises a hydraulic punch body, wherein a placing block is arranged on the hydraulic punch body, a first groove is formed in the top of the placing block, a second groove is formed in the inner wall of the bottom of the first groove, a lower die is fixedly arranged on the inner wall of the bottom of the second groove, four telescopic mechanisms which are arranged in a rectangular shape are fixedly arranged on the inner wall of the bottom of the first groove, the tops of the six telescopic mechanisms are fixedly provided with a same push plate, a through hole is formed in the push plate, two rectangular holes are formed in the placing block, and a third groove is formed in the bottom of the placing block. The invention not only has the advantage of good effect of stabilizing the workpiece, reduces the deformation of the workpiece when being stamped, but also can take out the stamped workpiece very conveniently after the stamping operation is finished, thereby greatly improving the production efficiency.

Description

Workpiece fixing mechanism for hydraulic punching machine

Technical Field

The invention relates to the technical field of hydraulic punching machines, in particular to a workpiece fixing mechanism for a hydraulic punching machine.

Background

Currently, in the field of machining, hydraulic presses are necessary equipment for performing workpiece machining. The hydraulic punching machine is mainly used for punching a workpiece to be punched into a required shape under the action of a high-pressure hydraulic punch or pressing a punched part into the workpiece to be punched under the action of the high-pressure hydraulic punch, a semi-automatic punching machine tool is frequently used for processing the workpiece, the semi-automatic hydraulic punching machine comprises a base, a plurality of hydraulic cylinders fixedly connected to the base and an execution pressing plate fixedly connected with the upper ends of the hydraulic cylinders, and a punching head used for punching and forming the workpiece is arranged on the execution pressing plate.

When the workpiece with the bent shape is punched by the existing hydraulic punch, the punching head can drive the workpiece to deviate, so that the bent part of the workpiece deforms, the shape of the workpiece is difficult to meet the actual working requirement, and the workpiece punched by the existing punching machine tool after the punching operation is finished is not convenient to take out.

Therefore, we propose a workpiece fixing mechanism for a hydraulic press to solve the above problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a workpiece fixing mechanism for a hydraulic press.

In order to achieve the purpose, the invention adopts the following technical scheme: a workpiece fixing mechanism for a hydraulic punch comprises a hydraulic punch body, wherein a placing block is arranged on the hydraulic punch body, a first groove is formed in the top of the placing block, a second groove is formed in the inner wall of the bottom of the first groove, a lower die is fixedly mounted on the inner wall of the bottom of the second groove, four telescopic mechanisms which are arranged in a rectangular mode are fixedly mounted on the inner wall of the bottom of the first groove, the tops of the four telescopic mechanisms are fixedly provided with a same push plate, a through hole is formed in the push plate, two rectangular holes are formed in the placing block, a third groove is formed in the bottom of the placing block, the two rectangular holes are communicated with the third groove, a moving mechanism is arranged in each rectangular hole and comprises a vertical rod, the two vertical rods are respectively in sliding connection with the inner walls of the corresponding rectangular holes, the top ends of the two vertical rods respectively penetrate through the corresponding rectangular holes and are fixedly provided with a clamping mechanism, the clamping mechanism comprises a cross rod, the bottom of the cross rod is fixedly connected with the top end of a vertical rod, a pressing rod is slidably mounted on the cross rod, and a clamping block is fixedly mounted at the bottom end of the pressing rod.

Preferably, telescopic machanism includes the telescopic link, the top of telescopic link and the bottom fixed connection of push pedal, the bottom of telescopic link and the bottom inner wall fixed connection of first recess, fixed mounting has first spring on the bottom inner wall of first recess, the top of first spring and the bottom fixed connection of push pedal, and first spring sliding sleeve establishes on the telescopic link.

Preferably, all seted up on the one side inner wall that two rectangular holes kept away from each other and rotated the hole, two rotate downthehole all to rotate and install the screw rod, two screw rods respectively with the montant threaded connection who corresponds, the one end fixed mounting that two screw rods are close to each other has same pivot, fixed mounting has first conical gear in the pivot, fixed mounting has the motor on the top inner wall of third recess, fixed mounting has second conical gear on the output shaft of motor, second conical gear and first conical gear mesh mutually.

Preferably, clamping mechanism includes the internal thread sleeve, the fixed orifices has been seted up on the horizontal pole, the inner wall fixed connection of internal thread sleeve and fixed orifices, internal thread sleeve internal thread cover is equipped with the external screw thread sleeve, the external screw thread sleeve runs through the internal thread sleeve, the depression bar run through the external screw thread sleeve and with the telescopic inner wall sliding connection of external screw thread, the top fixed mounting of depression bar has the baffle, the bottom fixed mounting of baffle has the second spring, the telescopic top fixed connection of second spring and external screw thread, and second spring sliding sleeve establishes on the depression bar.

Preferably, the same limiting rod is fixedly mounted on the inner walls of the two sides of the rectangular hole, the cylinder is fixedly mounted on the vertical rod, the circular tube penetrates through the vertical rod, and the limiting rod is connected with the inner wall of the cylinder in a sliding mode.

Preferably, a bearing is arranged in the rotating hole, an outer ring of the bearing is fixedly connected with the inner wall of the rotating hole, and an inner ring of the bearing is fixedly sleeved on the screw rod.

Preferably, telescopic machanism includes the bellows, the top of bellows and the bottom fixed connection of push pedal, the bottom of bellows and the bottom inner wall fixed connection of first recess, the bellows slip the cover and establish on first spring.

Preferably, the vertical rod is provided with a threaded hole, and the screw rod is in threaded connection with the inner wall of the threaded hole.

Preferably, the external thread sleeve is fixedly provided with a hexagon bolt, and the hexagon bolt is positioned above the cross rod.

Preferably, the gear ratio of the first bevel gear and the second bevel gear is 1: 5.

Compared with the prior art, the invention has the beneficial effects that: an external power supply and a reversing switch are connected to one side of a hydraulic punch body, wherein a motor, the external power supply and the reversing switch are sequentially connected through a lead and form a loop, when a workpiece is punched, the workpiece is firstly placed on a push plate, then the clockwise rotation of the motor is controlled through the reversing switch, the motor rotates and drives a second bevel gear to rotate, the second bevel gear drives a first bevel gear to rotate, the first bevel gear drives a rotating shaft to rotate, the rotating shaft rotates and drives two screw rods to rotate, the two vertical rods are close to each other under the limit of the two limit rods along with the rotation of the two screw rods, when the two vertical rods drive the two clamping mechanisms to be positioned above the workpiece, a baffle plate drives a clamping block to tightly abut against the workpiece through the pressure rod under the elastic action of a second spring, and then an external thread sleeve is rotated clockwise through a hexagon bolt, the outer thread sleeve drives the baffle and the pressure rod to enable the clamping block to tightly abut against the surface of a workpiece through the second spring along with continuous rotation of the outer thread sleeve, so that abnormal movement of the workpiece is prevented when the workpiece is punched, an upper die arranged on the hydraulic punch body is close to a lower die when the workpiece is punched, the workpiece is driven to be continuously close to the lower die along with the upper die, so that the four telescopic mechanisms are continuously contracted by the push plate, when the push plate and the lower die are aligned, the workpiece completes punching work under the matching of the upper die and the lower die, when the punching work is completed, the upper die is driven to be far away from the lower die, under the action of the four telescopic mechanisms, the push plate is driven to be far away from the lower die in north-south direction, so that the push plate can drive the punched workpiece in the lower die to be separated from the lower die, and the punched workpiece can be conveniently taken out from the lower die, when the telescopic mechanism works, the first spring can be contracted or extended, so that the telescopic rod can also be synchronously contracted or extended along with the first spring.

The invention not only has the advantage of good effect of stabilizing the workpiece, reduces the deformation of the workpiece when being stamped, but also can take out the stamped workpiece very conveniently after the stamping operation is finished, thereby greatly improving the production efficiency.

Drawings

Fig. 1 is a schematic perspective view of a workpiece fixing mechanism for a hydraulic press according to the present invention;

FIG. 2 is a schematic sectional front view of a placement block in a workpiece fixing mechanism for a hydraulic press according to the present invention;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of portion B of FIG. 2;

fig. 5 is an enlarged schematic view of a portion C in fig. 2.

In the figure: 1. a hydraulic punch body; 2. placing the blocks; 3. a first groove; 4. a second groove; 5. a lower die; 6. a telescoping mechanism; 601. a telescopic rod; 602. a first spring; 7. pushing the plate; 8. a through hole; 9. a rectangular hole; 10. a third groove; 11. a moving mechanism; 1101. a vertical rod; 1102. rotating the hole; 1103. a screw; 1104. a rotating shaft; 1105. a first bevel gear; 1106. a motor; 1107. a second bevel gear; 12. a clamping mechanism; 1201. a cross bar; 1202. an internally threaded sleeve; 1203. an externally threaded sleeve; 1204. a pressure lever; 1205. a clamping block; 1206. a baffle plate; 1207. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-5, the embodiment provides a workpiece fixing mechanism for a hydraulic press, which includes a hydraulic press body 1, a placing block 2 is disposed on the hydraulic press body 1, a first groove 3 is disposed on a top of the placing block 2, a second groove 4 is disposed on a bottom inner wall of the first groove 3, a lower mold 5 is fixedly mounted on a bottom inner wall of the second groove 4, four telescopic mechanisms 6 arranged in a rectangular manner are fixedly mounted on a bottom inner wall of the first groove 3, a same push plate 7 is fixedly mounted on tops of the four telescopic mechanisms 6, a through hole 8 is disposed on the push plate 7, two rectangular holes 9 are disposed on the placing block 2, a third groove 10 is disposed on a bottom of the placing block 2, the two rectangular holes 9 are both communicated with the third groove 10, moving mechanisms 11 are disposed in the two rectangular holes 9, the moving mechanisms 11 include vertical rods 1101, the two vertical rods 1101 are respectively slidably connected with inner walls of the corresponding rectangular holes 9, the top ends of the two vertical rods 1101 respectively penetrate through the corresponding rectangular holes 9 and are fixedly provided with clamping mechanisms 12, each clamping mechanism 12 comprises a cross rod 1201, the bottom of each cross rod 1201 is fixedly connected with the top end of each vertical rod 1101, a pressing rod 1204 is slidably arranged on each cross rod 1201, and a clamping block 1205 is fixedly arranged at the bottom end of each pressing rod 1204;

the telescoping mechanism 6 comprises a telescoping rod 601, the top end of the telescoping rod 601 is fixedly connected with the bottom of the push plate 7, the bottom end of the telescoping rod 601 is fixedly connected with the inner wall of the bottom of the first groove 3, a first spring 602 is fixedly installed on the inner wall of the bottom of the first groove 3, the top end of the first spring 602 is fixedly connected with the bottom of the push plate 7, the first spring 602 is slidably sleeved on the telescoping rod 601, the inner walls of the two sides of the two rectangular holes 9, which are far away from each other, are respectively provided with a rotating hole 1102, the two rotating holes 1102 are respectively rotatably provided with a screw 1103, the two screws 1103 are respectively in threaded connection with corresponding vertical rods 1101, one end of the two screws 1103, which are close to each other, is fixedly provided with a same rotating shaft 1104, the rotating shaft 1104 is fixedly provided with a first bevel gear 1105, the inner wall of the top of the third groove 10 is fixedly provided with a motor 1106, the output shaft of the motor 1106 is fixedly provided with a second bevel gear 1107, the second bevel gear 1107 is meshed with the first bevel gear 1105, the clamping mechanism 12 comprises an internal thread sleeve 1202, a fixing hole is formed in the cross rod 1201, the internal thread sleeve 1202 is fixedly connected with the inner wall of the fixing hole, an external thread sleeve 1203 is sleeved on the internal thread sleeve 1202, the external thread sleeve 1203 penetrates through the internal thread sleeve 1202, a pressing rod 1204 penetrates through the external thread sleeve 1203 and is in sliding connection with the inner wall of the external thread sleeve 1203, a baffle 1206 is fixedly installed at the top end of the pressing rod 1204, a second spring 1207 is fixedly installed at the bottom of the baffle 1206, the second spring 1207 is fixedly connected with the top of the external thread sleeve 1203, the second spring 1207 is in sliding connection with the pressing rod 1204, the same limiting rod is fixedly installed on the inner walls on two sides of the rectangular hole 9, a cylinder is fixedly installed on the vertical rod 1101, a circular tube penetrates through the vertical rod 1101, the inner walls of the limiting rod and the cylinder are in sliding connection, a bearing is arranged in the rotating hole 1102, the outer ring of the bearing is fixedly connected with the inner wall of the rotating hole 1102, and the inner ring of the bearing is fixedly sleeved on the screw 1103, the telescoping mechanism 6 comprises a corrugated pipe, the top end of the corrugated pipe is fixedly connected with the bottom of the push plate 7, the bottom end of the corrugated pipe is fixedly connected with the inner wall of the bottom of the first groove 3, the corrugated pipe is slidably sleeved on the first spring 602, a threaded hole is formed in the vertical rod 1101, the screw 1103 is in threaded connection with the inner wall of the threaded hole, a hexagonal bolt is fixedly mounted on the external thread sleeve 1203, the hexagonal bolt is positioned above the transverse rod 1201, the gear ratio of the first conical gear 1105 to the second conical gear 1107 is 1: 5, one side of the hydraulic punch body 1 is connected with an external power supply and a reversing switch, wherein the motor 1106, the external power supply and the reversing switch are sequentially connected through wires to form a loop, when a workpiece is punched, the workpiece is firstly placed on the push plate 7, then the clockwise rotation of the motor 1106 is controlled through the reversing switch, the motor 1106 rotates and drives the second conical gear 1107 to rotate, the second bevel gear 1107 drives the first bevel gear 1105 to rotate, the first bevel gear 1105 drives the rotating shaft 1104 to rotate, the rotating shaft 1104 rotates and drives the two screws 1103 to rotate, the two vertical rods 1101 will approach each other under the limit of the two limit rods along with the rotation of the two screws 1103, when the two vertical rods 1101 drive the two clamping mechanisms 12 to be located above the workpiece, the baffle 1206 drives the clamp block 1205 to tightly abut against the workpiece through the pressing rod 1204 under the elastic force of the second spring 1207, then the external thread sleeve 1203 is rotated clockwise through the hexagon bolt, along with the continuous rotation of the external thread sleeve 1203, the external thread sleeve 1203 drives the baffle 1206 and the pressing rod 1204 through the second spring 1207 to make the clamp block 1205 tightly abut against the surface of the workpiece, thereby preventing the workpiece from abnormal movement during punching, when the workpiece is punched, the upper die arranged on the hydraulic punch body 1 approaches the lower die 5, the invention has the advantages of good effect of stabilizing the workpiece, and reducing the deformation of the workpiece when being stamped, along with the fact that the upper die drives the workpiece to continuously approach the lower die, so that the push plate 7 continuously contracts the four telescopic mechanisms 6, when the push plate 7 is flush with the lower die 5, the workpiece is stamped under the cooperation of the upper die and the lower die 5, when the stamping is finished, the upper die is driven to be far away from the lower die 5, under the action of the four telescopic mechanisms 6, the push plate 7 is driven to be far away from the lower die 5 in the north-south direction, so that the push plate 7 can drive the stamping workpiece in the lower die 5 to be separated from the lower die 5, thereby being convenient for taking out the stamping workpiece from the lower die 5, when the telescopic mechanisms 6 work, the first spring 602 can contract or extend, and the telescopic rod 601 can synchronously contract or extend along with the first spring 602, and can be very convenient take out the punching press work piece after punching press work is accomplished, by a wide margin improvement production efficiency.

In this embodiment, an external power source and a reversing switch are connected to one side of the hydraulic punch body 1, wherein the motor 1106, the external power source and the reversing switch are sequentially connected through a conducting wire to form a loop, when a workpiece is punched, the workpiece is placed on the push plate 7, then the reversing switch controls the motor 1106 to rotate clockwise, the motor 1106 rotates and drives the second bevel gear 1107 to rotate, the second bevel gear 1107 drives the first bevel gear 1105 to rotate, the first bevel gear 1105 drives the rotating shaft 1104 to rotate, the rotating shaft 1104 rotates and drives the two screws 1103 to rotate, the two vertical rods 1101 will approach each other under the limit of the two limit rods along with the rotation of the two screws 1103, when the two vertical rods 1101 drive the two clamping mechanisms 12 to be located above the workpiece, the baffle 1206 drives the clamp blocks 1205 to tightly abut against the workpiece through the pressure rods 1204 under the action of the elastic force of the second spring 1207, afterwards, the external thread sleeve 1203 is rotated clockwise through the hexagon bolt, and along with the continuous rotation of the external thread sleeve 1203, the external thread sleeve 1203 drives the baffle 1206 and the pressing rod 1204 through the second spring 1207 to enable the clamping block 1205 to tightly abut against the surface of the workpiece, so that the abnormal movement of the workpiece is prevented when the workpiece is punched.

In this embodiment, when punching a workpiece, the upper die on the hydraulic punch body 1 is close to the lower die 5, and the workpiece is driven to be continuously close to the lower die by the upper die, so that the four retractable mechanisms 6 are continuously retracted by the push plate 7, when the push plate 7 is flush with the lower die 5, the workpiece is punched by the cooperation of the upper die and the lower die 5, when the punching is completed, the upper die is driven to be away from the lower die 5, and under the action of the four retractable mechanisms 6, the push plate 7 is driven to be away from the lower die 5 in the north-south direction, so that the push plate 7 can drive the punched workpiece in the lower die 5 to be separated from the lower die 5, thereby taking out the punched workpiece from the lower die 5, when the retractable mechanisms 6 work, the first spring 602 is retracted or extended, and the retractable rod 601 can also be retracted or extended synchronously with the first spring 602, the invention not only has the advantage of good effect of stabilizing the workpiece, reduces the deformation of the workpiece when being stamped, but also can take out the stamped workpiece very conveniently after the stamping operation is finished, thereby greatly improving the production efficiency.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A workpiece fixing mechanism for a hydraulic punch comprises a hydraulic punch body (1) and is characterized in that a placing block (2) is arranged on the hydraulic punch body (1), a first groove (3) is formed in the top of the placing block (2), a second groove (4) is formed in the inner wall of the bottom of the first groove (3), a lower die (5) is fixedly mounted on the inner wall of the bottom of the second groove (4), four telescopic mechanisms (6) which are arranged in a rectangular mode are fixedly mounted on the inner wall of the bottom of the first groove (3), the tops of the four telescopic mechanisms (6) are fixedly mounted with a same push plate (7), a through hole (8) is formed in the push plate (7), two rectangular holes (9) are formed in the placing block (2), a third groove (10) is formed in the bottom of the placing block (2), and the two rectangular holes (9) are communicated with the third groove (10), all be equipped with moving mechanism (11) in two rectangular hole (9), moving mechanism (11) include montant (1101), two montants (1101) respectively with the inner wall sliding connection of the rectangular hole (9) that corresponds, and the top of two montants (1101) runs through corresponding rectangular hole (9) respectively and fixed mounting has clamping mechanism (12), clamping mechanism (12) include horizontal pole (1201), the bottom of horizontal pole (1201) and the top fixed connection of montant (1101), slidable mounting has depression bar (1204) on horizontal pole (1201), the bottom fixed mounting of depression bar (1204) has clamp splice (1205).

2. The workpiece fixing mechanism for the hydraulic press as recited in claim 1, wherein the telescopic mechanism (6) comprises a telescopic rod (601), the top end of the telescopic rod (601) is fixedly connected with the bottom of the push plate (7), the bottom end of the telescopic rod (601) is fixedly connected with the inner wall of the bottom of the first groove (3), a first spring (602) is fixedly mounted on the inner wall of the bottom of the first groove (3), the top end of the first spring (602) is fixedly connected with the bottom of the push plate (7), and the first spring (602) is slidably sleeved on the telescopic rod (601).

3. The workpiece fixing mechanism for the hydraulic press as recited in claim 1, wherein the inner wall of one side of each of the two rectangular holes (9) away from each other is provided with a rotation hole (1102), the two rotation holes (1102) are internally provided with a screw (1103) in a rotating manner, the two screws (1103) are respectively in threaded connection with the corresponding vertical rods (1101), one end of each of the two screws (1103) close to each other is fixedly provided with a rotating shaft (1104), the rotating shaft (1104) is fixedly provided with a first bevel gear (1105), the inner wall of the top of the third groove (10) is fixedly provided with a motor (1106), an output shaft of the motor (1106) is fixedly provided with a second bevel gear (1107), and the second bevel gear (1107) is meshed with the first bevel gear (1105).

4. The workpiece fixing mechanism for a hydraulic press according to claim 1, the clamping mechanism (12) comprises an internal thread sleeve (1202), the cross rod (1201) is provided with a fixing hole, the internal thread sleeve (1202) is fixedly connected with the inner wall of the fixing hole, an external thread sleeve (1203) is sleeved on the internal thread of the internal thread sleeve (1202), the external thread sleeve (1203) penetrates through the internal thread sleeve (1202), the pressure lever (1204) penetrates through the external thread sleeve (1203) and is connected with the inner wall of the external thread sleeve (1203) in a sliding mode, a baffle plate (1206) is fixedly arranged at the top end of the pressure lever (1204), a second spring (1207) is fixedly arranged at the bottom of the baffle plate (1206), the second spring (1207) is fixedly connected with the top of the external thread sleeve (1203), and the second spring (1207) is sleeved on the pressure lever (1204) in a sliding mode.

5. The workpiece fixing mechanism for the hydraulic press as recited in claim 1, wherein the same limiting rod is fixedly installed on the inner walls of two sides of the rectangular hole (9), a cylinder is fixedly installed on the vertical rod (1101), the cylinder penetrates through the vertical rod (1101), and the limiting rod is slidably connected with the inner wall of the cylinder.

6. The workpiece fixing mechanism for the hydraulic press as recited in claim 3, wherein a bearing is disposed in the rotation hole (1102), an outer ring of the bearing is fixedly connected with an inner wall of the rotation hole (1102), and an inner ring of the bearing is fixedly sleeved on the screw (1103).

7. The workpiece fixing mechanism for the hydraulic press as recited in claim 2, wherein the telescopic mechanism (6) comprises a bellows, the top end of the bellows is fixedly connected with the bottom of the push plate (7), the bottom end of the bellows is fixedly connected with the inner wall of the bottom of the first groove (3), and the bellows is slidably sleeved on the first spring (602).

8. The workpiece fixing mechanism for the hydraulic press as recited in claim 3, wherein the vertical rod (1101) is provided with a threaded hole, and the screw (1103) is in threaded connection with an inner wall of the threaded hole.

9. The workpiece fixing mechanism for the hydraulic press as recited in claim 4, wherein a hexagon bolt is fixedly installed on the externally threaded sleeve (1203), and the hexagon bolt is positioned above the cross bar (1201).

10. A workpiece fixing mechanism for a hydraulic press as set forth in claim 3, characterized in that said first bevel gear (1105) and said second bevel gear (1107) have a gear ratio of 1: 5.