CN218638427U

CN218638427U - Workpiece ejection mechanism for stamping die

Info

Publication number: CN218638427U
Application number: CN202223149503.4U
Authority: CN
Inventors: 段炳龙
Original assignee: Jingzhou Taisheng Ronghe General Machinery Co ltd
Current assignee: Jingzhou Taisheng Ronghe General Machinery Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-17
Anticipated expiration: 2032-11-25

Abstract

The utility model provides a work piece ejection mechanism for stamping die, the stamping die includes upper die and lower mould, and upper die and lower mould are fixed mounting respectively on the upper base and the lower base of punching machine, ejection mechanism corresponds the lower mould setting, ejection mechanism includes linkage unit and a plurality of knock-out lever, the lower mould top has set gradually a plurality of upwards opening strip channels in parallel, the side of lower mould is run through at channel both ends, the knock-out lever corresponds channel extending direction level setting inside it, and the knock-out lever both ends stretch out the channel outside respectively and thus extend to the both sides of lower base; the linkage unit is connected with one end of the ejector rod in a rotating mode, the other end of the linkage unit is movably connected with the upper base, and when the upper die and the lower die are separated, the linkage unit drives the ejector rod to rotate to an inclined state. The utility model provides a need other process that exists among the prior art just can make the work piece of accomplishing die-cut leave the position between mould and the lower mould and cause the problem of inefficiency, improved efficiency and safety.

Description

Workpiece ejection mechanism for stamping die

Technical Field

The utility model relates to a press die technical field especially relates to a work piece ejection mechanism for press die.

Background

A press die is a press working apparatus that applies pressure to a material using a die mounted on a press to cause separation or plastic deformation thereof, thereby obtaining a desired part. The punching die comprises an upper die and a lower die, and the upper die and the lower die are respectively and correspondingly fixed on an upper base and a lower base of the press machine from top to bottom during use.

Some stamping dies include an ejection device, so that in order to prevent a workpiece from being clamped in a processing station after punching is completed, a part needs to be ejected up through reverse pushing of the ejection device, and then a worker takes away the workpiece after punching is completed and processes the next workpiece. In the prior art, most of ejection mechanisms used in a stamping die are driven by springs, and the movement direction of the ejection mechanism corresponds to the stamping direction. When the workpiece is lifted upwards by a conventional ejection mechanism after being processed, the workpiece still stays at the position in front of the upper die and the lower die, and an operator or a machine is required to hold the workpiece to take out. Arranging the operator to grab the workpiece is inefficient, increases the work content and intensity of the operator, and risks of safety accidents for the worker after long-time work, so that the operator needs to be reduced or eliminated to complete the step. In addition, the common mechanical gripper is complex to use and needs specialized personnel to debug, and workers are also needed to readjust after different types of products are replaced in daily production, so that the skill requirements on the workers are increased; in addition, the purchase cost of the mechanical gripper is high. Therefore, a new ejection mechanism is needed that can move the workpiece out of between the upper and lower dies.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a work piece ejection mechanism for press die, it has solved the need that exists among the prior art other process could make the work piece of accomplishing die-cut leave the position between mould and the lower mould, causes the problem of inefficiency.

According to an embodiment of the utility model, a work piece ejection mechanism for stamping die, the stamping die includes upper die and lower mould, and upper die and lower mould are fixed mounting respectively on the upper base and the lower base of punching machine, ejection mechanism corresponds the lower mould setting, ejection mechanism includes linkage unit and a plurality of knock-out lever, the lower mould top has set gradually a plurality of strip channels that open to the top in parallel, the channel both ends run through the side of lower mould, the knock-out lever corresponds channel extending direction level setting inside it, and the knock-out lever both ends stretch out the channel outside respectively and thus extend to the both sides of lower base; the linkage unit is rotatably connected with one end of the ejector rod, the other end of the linkage unit is movably connected with the upper base, and when the upper die and the lower die are separated, the linkage unit drives the ejector rod to rotate to an inclined state.

The technical principle of the utility model is that: after the punching work is finished by folding the press, the upper die base moves upwards for a certain distance, the limiting block is contacted with the connecting sleeve, one end of the ejector rod is pulled to move upwards, the ejector rod is abutted to a workpiece on the lower die when moving upwards, the ejector rod slides towards one side of the lower die after being jacked upwards, the ejector rod leaves the middle position of the upper die and the lower die, and the next workpiece can be placed after the ejector rod is reset, so that the step of taking out the workpiece by using manpower or machines is avoided, and the work efficiency is improved.

Preferably, the linkage unit comprises a driven rod and a plurality of pull rods, the driven rod is vertically and fixedly connected with one end of the ejection rod, and the bottom ends of the pull rods are respectively and rotatably connected with the driven rod; the bottom of one side edge of the upper base corresponding to the pull rod is respectively and rotatably provided with a connecting sleeve, the connecting sleeve is provided with a through inner hole, the pull rod penetrates through the inner hole and is in clearance fit with the inner hole, and the connecting sleeve, the ejector rod and the rotating surface of the pull rod are parallel; the pull rod is provided with a limiting block at a position higher than the connecting sleeve.

Preferably, the ejection mechanism further comprises a main shaft, a plurality of first telescopic rods and a plurality of second telescopic rods, wherein the main shaft is vertically and fixedly connected with one end, far away from the driven rod, of the ejection rod; the first telescopic rod and the second telescopic rod are both vertically and fixedly arranged, the first telescopic rod is uniformly arranged right below the main shaft, and the top of the first telescopic rod is rotatably connected with the main shaft; the second telescopic link sets up in the below of the one end that the first telescopic link was kept away from to the knock-out lever, the top and the knock-out lever movable contact of second telescopic link.

Preferably, a connecting rod is arranged on the outer side wall of the connecting sleeve, one end of the connecting rod is fixedly connected with the bottom of the side edge of the upper base, and the other section of the connecting rod is rotatably connected with the connecting sleeve.

Preferably, the ejection rod further comprises a spring, the spring is sleeved on one side, far away from the ejection rod, of the pull rod relative to the limiting block, and one end of the spring is fixedly connected with the pull rod while the other end is fixedly connected with the limiting block; the limiting block is connected with the pull rod in a sliding mode.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. first telescopic link and second telescopic link drive ejector pin level rebound when upwards stretching out simultaneously, avoid because of the condition that the molding problem of lower mould blocked appears, make the work piece rebound slide to one side after a distance, avoided the ejector pin probably to the extrusion of work piece, cause the damage of work piece or ejector pin.

2. When the upper die base moves upwards and the connecting sleeve is contacted with the limiting block, the spring plays a role in buffering left and right, the damage of the pull rod caused by rigid contact is avoided, and the service life of the ejection mechanism is prolonged.

3. When the ejector rod enables the workpiece to move upwards, the workpiece also moves towards the outer sides of the upper die and the lower die synchronously, so that the working steps of taking out are reduced, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a schematic view of the ejector rod of the present invention.

In the drawings, wherein: 1. a lower base; 2. an upper base; 3. a lower die; 4. an upper die; 5. a first telescopic rod; 6. a second telescopic rod; 7. ejecting the rod; 8. a main shaft; 9. a driven lever; 10. a pull rod; 11. a spring; 12. a limiting block; 13. connecting sleeves; 14. a connecting rod.

Detailed Description

As shown in fig. 1 and 2, the embodiment of the utility model provides a work piece ejection mechanism for stamping die, the stamping die includes last mould 4 and lower mould 3, goes up mould 4 and lower mould 3 respectively fixed mounting on the upper base 2 of punching machine and lower base 1, ejection mechanism corresponds the setting of lower mould 3. The press in this example is a vertical hydraulic press. The ejection mechanism comprises a linkage unit and a plurality of ejection rods 7, three strip-shaped channels with upward openings are sequentially arranged on the top of the lower die 3 in parallel, two ends of each channel penetrate through the side face of the lower die 3, the ejection rods 7 are horizontally arranged in the channels corresponding to the extending directions of the channels, two ends of each ejection rod 7 respectively extend out of two sides of the channel and extend to the two sides of the lower base 1, and the vertical sections of the channels are matched with the vertical sections of the ejection rods 7. If the local area on the parting surface of the upper die 4 and the lower die 3 is of a special-shaped structure or a curved surface, the plate is required to be punched and molded in the radial blanking process, the ejection mechanism is not overlapped with the blanking position or keeps a certain distance of interval under the condition that ejection can be realized, the complex processing of the ejection rod 7 is avoided so as to match the parting surface, and the complex influence of the structure is increased so as to stabilize the production. If the processed workpiece is of a rectangular plate structure, the ejector rods 7 are arranged on two sides and in the middle of the opposite workpiece, and if the workpiece is too long, the risk of deformation during ejection exists, and the number of the ejector rods 7 can be properly increased. The linkage unit is rotatably connected with one end of the ejector rod 7, the other end of the linkage unit is movably connected with the upper base 2, when the upper die 4 and the lower die 3 are separated, the linkage unit drives the ejector rod 7 to rotate to an inclined state, and in the process, a workpiece is ejected by the ejector rod 7 and slides to one side of the press machine along the inclined plane of the ejector rod 7. The press will be provided with a discharge hole at the corresponding side, and a transfer box is provided at the position corresponding to the discharge hole, so that the work piece falls into the transfer box.

Preferably, the linkage unit comprises a driven rod 9 and a plurality of pull rods 10, the driven rod 9 is vertically and fixedly connected with one end of the ejection rod 7, and the bottom ends of the pull rods 10 are respectively and rotatably connected with the driven rod 9. The upper base 2 is respectively and rotatably provided with a connecting sleeve 13 corresponding to the bottom of one side edge of the pull rod 10, the connecting sleeve 13 is provided with a through inner hole, the pull rod 10 penetrates through the inner hole and is in clearance fit with the inner hole, and the rotating surfaces of the connecting sleeve 13, the ejector rod 7 and the pull rod 10 are parallel; the pull rod 10 is fixedly provided with a limiting block 12 at a position higher than the connecting sleeve 13. When the upper base 2 and the lower base 1 are separated, the connecting sleeve 13 slides along the pull rod 10 to one end far away from the ejector rod 7, when the upper base 2 slides to a certain height, the connecting sleeve will contact with the limiting block 12, and when the connecting sleeve 13 cannot slide along the pull rod 10, the pull rod 10 will be pulled upwards. Because the bottom of the pull rod 10 is connected with the ejector rod 7, the bottom of the pull rod 10 can incline towards one side of the ejector rod 7, and the connecting sleeve 13 is rotatably connected with the upper base 2, so that the situation that the pull rod 10 is bent or broken when rotating is avoided. The connecting sleeve 13 is spaced from the ejector rod 7 in a horizontal state, the connecting end point of the ejector rod 7 and the pull rod 10 corresponds to the position of the connecting sleeve 13, and the pull rod 10 is kept in a vertical state by the upper base 2 and the lower base 1 when the two bases are assembled, so that the connecting sleeve 13 and the pull rod 10 can slide conveniently.

Preferably, the ejection mechanism further comprises a main shaft 8, a plurality of first telescopic rods 5 and a plurality of second telescopic rods 6, wherein the main shaft 8 is vertically and fixedly connected with one end, far away from a driven rod 9, of the ejection rod 7; the first telescopic rod 5 and the second telescopic rod 6 are both vertically and fixedly arranged, the first telescopic rod 5 is uniformly arranged under the main shaft 8, and the top of the first telescopic rod 5 is rotatably connected with the main shaft 8; the second telescopic rod 6 is arranged below one end, far away from the first telescopic rod 5, of the ejection rod 7, and the top of the second telescopic rod 6 is in movable contact with the ejection rod 7. When the local abnormal-shaped surface of the processed workpiece appears, the workpiece can be separated from the lower die 3 only by moving the vertical abnormal-shaped surface, so that the first telescopic rod 5 and the second telescopic rod 6 synchronously extend upwards after the die opening before the connecting sleeve 13 and the limiting block 12 are not contacted, and the ejector rod 7 horizontally moves upwards, so that the workpiece and the analysis surface of the lower die 3 vertically move for a certain distance, and then the ejector rod 7 moves to an inclined state to eject the workpiece.

Preferably, a connecting rod 14 is arranged on the outer side wall of the connecting sleeve 13, one end of the connecting rod 14 is fixedly connected with the bottom of the side edge of the upper base 2, and the other section of the connecting rod 14 is rotatably connected with the connecting sleeve 13. The connecting rod 14 functions as an extension connection.

Preferably, the ejection device further comprises a spring 11, the spring 11 is sleeved on the pull rod 10, the spring 11 is positioned on one side, away from the ejection rod 7, of the limiting block 12, one end of the spring 11 is fixedly connected with the pull rod 10, and the other end of the spring 11 is fixedly connected with the limiting block 12; the limiting block 12 is connected with the pull rod 10 in a sliding mode, a through hole is formed in the limiting block 12, and the pull rod 10 penetrates through the through hole and is in clearance fit with the through hole. After the connecting sleeve 13 contacts with the limiting block 12, the limiting block 12 moves towards one end far away from the ejector rod 7, so that the spring 11 contracts, and the process plays a role in buffering, thereby avoiding the damage caused by rigid contact of the connecting sleeve 13 and the limiting block 12.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a work piece ejection mechanism for press die, the press die includes mould (4) and lower mould (3), goes up mould (4) and lower mould (3) respectively fixed mounting on upper base (2) and lower base (1) of punching machine, ejection mechanism corresponds lower mould (3) setting, its characterized in that: the ejection mechanism comprises a linkage unit and a plurality of ejection rods (7), a plurality of strip-shaped channels with upward openings are sequentially arranged on the top of the lower die (3) in parallel, two ends of each channel penetrate through the side surface of the lower die (3), the ejection rods (7) are horizontally arranged in the ejection mechanism corresponding to the extending direction of the channels, and two ends of each ejection rod (7) respectively extend out of the channel to extend to two sides of the lower base (1); the linkage unit is rotatably connected with one end of the ejector rod (7), the other end of the linkage unit is movably connected with the upper base (2), and when the upper die (4) and the lower die (3) are separated, the linkage unit drives the ejector rod (7) to rotate to an inclined state.

2. A workpiece ejection mechanism for a press die as claimed in claim 1, wherein: the linkage unit comprises a driven rod (9) and a plurality of pull rods (10), the driven rod (9) is vertically and fixedly connected with one end of the ejection rod (7), and the bottom ends of the pull rods (10) are respectively rotatably connected with the driven rod (9); the upper base (2) is respectively and rotatably provided with a connecting sleeve (13) corresponding to the bottom of one side edge of the pull rod (10), the connecting sleeve (13) is provided with a through inner hole, the pull rod (10) penetrates through the inner hole and is in clearance fit with the inner hole, and the rotating surfaces of the connecting sleeve (13), the ejector rod (7) and the pull rod (10) are parallel; the pull rod (10) is provided with a limiting block (12) at a position higher than the connecting sleeve (13).

3. A workpiece ejection mechanism for a press die as claimed in claim 1, wherein: the ejection mechanism is characterized by further comprising a main shaft (8), a plurality of first telescopic rods (5) and a plurality of second telescopic rods (6), wherein the main shaft (8) is vertically and fixedly connected with one end, far away from the driven rod (9), of the ejection rod (7); the first telescopic rod (5) and the second telescopic rod (6) are both vertically and fixedly arranged, the first telescopic rods (5) are uniformly arranged under the main shaft (8), and the top of the first telescopic rod (5) is rotatably connected with the main shaft (8); the second telescopic rod (6) is arranged below one end, far away from the first telescopic rod (5), of the ejection rod (7), and the top of the second telescopic rod (6) is movably contacted with the ejection rod (7).

4. A workpiece ejection mechanism for a press die as claimed in claim 2, wherein: the outer side wall of the connecting sleeve (13) is provided with a connecting rod (14), one end of the connecting rod (14) is fixedly connected with the bottom of the side edge of the upper base (2), and the other section of the connecting rod (14) is rotatably connected with the connecting sleeve (13).

5. A workpiece ejection mechanism for a press die as claimed in claim 3, wherein: the ejection rod (7) is sleeved with the spring (11), one side, far away from the ejection rod (7), of the pull rod (10) relative to the limiting block (12) is sleeved with the spring (11), one end of the spring (11) is fixedly connected with the pull rod (10), and the other end of the spring is fixedly connected with the limiting block (12); the limiting block (12) is connected with the pull rod (10) in a sliding mode.