CN220679092U

CN220679092U - Double-acting press

Info

Publication number: CN220679092U
Application number: CN202322369918.0U
Authority: CN
Inventors: 董铭; 胡斌; 张武军; 童柯淼; 张波; 马少波; 马越峰
Original assignee: Zhejiang Weirong Precision Forging Equipment Co ltd
Current assignee: Zhejiang Weirong Precision Forging Equipment Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-29
Anticipated expiration: 2033-09-01

Abstract

The utility model relates to a double-acting press which comprises a frame, a lower die and a driving structure, a transmission structure, an inner slide block, an outer slide block, an upper die, a die adjusting structure and a discharging structure, wherein the lower die and the driving structure are arranged on the frame, the transmission structure is connected with the driving structure, the inner slide block and the outer slide block are respectively connected with the transmission structure, the upper die is connected with the outer slide block, the die adjusting structure is used for adjusting the distance between the upper die and the lower die, and the discharging structure is used for separating a product from the lower die. The transmission structure comprises a multi-eccentric crankshaft, a first connecting rod, a second connecting rod and a toggle connecting rod group, wherein the multi-eccentric crankshaft comprises a first eccentric part and a second eccentric part, and the first connecting rod is connected with the first eccentric part and the second eccentric part respectively. The toggle type connecting rod group comprises a first pin shaft connected with a second toggle rod, the first connecting rod is connected with the second toggle rod through a second connecting pin, and the first toggle rod is connected with the outer sliding block through a fourth connecting pin. The utility model simplifies the stamping forming process of the workpiece with complex shape, improves the stamping efficiency, controls the precision of the product parts and is convenient to take out.

Description

Double-acting press

Technical Field

The utility model belongs to the technical field of presses, and particularly relates to a double-acting press.

Background

The stamping press, also called a punching machine, is widely used in the industries of aerospace, machinery, electronic information, traffic, daily electrical appliances and the like, and can convert the circular motion of a driving structure into the linear motion of a sliding block, and apply pressure to a material to deform the material so as to achieve the required shape and precision.

The stamping process is a process for producing product parts with certain shapes, sizes and performances by applying pressure to the plate material by using a die on a press machine to deform or separate the plate material in the die. The stamping processing can be used for processing parts with thin walls, good rigidity and high surface quality, raw materials can be saved, and the production is relatively efficient.

In the stamping process of product parts, different processes are generally designed according to different processing requirements, and one process is completed at one station. For product parts such as automobile ball cages, automobile hubs, Y-shaped tee joints, cross shafts and the like with complex shapes, a plurality of processes are generally designed when the product parts are subjected to stamping processing in the prior art, the position of a die is changed after each process is finished, or a plurality of single-action presses are adopted to respectively carry out different process processing, so that the processing of the product parts with complex shapes is finished together. The two processing modes are complex in operation, low in efficiency and long in processing time. In addition, the discharging mode of the current press and the control of the precision of the product parts need further improvement.

Therefore, it is desirable to provide a press machine that can more quickly complete the stamping process, discharge more quickly, and control the precision of the product parts more accurately.

Disclosure of Invention

First, the technical problem to be solved

The utility model provides a double-acting press, which aims to solve the problems that in the prior art, a single-acting press is complicated in operation and low in efficiency for processing product parts with complex shapes, and the discharging mode of the existing press and the control of the precision of the product parts are still insufficient.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

the double-acting press comprises a frame, a lower die and a driving structure which are arranged on the frame, a transmission structure connected with the driving structure, an inner slide block and an outer slide block which are respectively connected with the transmission structure, an upper die connected with the outer slide block, a die adjusting structure for adjusting the distance between the upper die and the lower die, and a discharging structure for separating a product from the lower die, wherein the outer slide block is positioned at the outer side of the inner slide block;

the transmission structure comprises a multi-eccentric crankshaft, a first connecting rod, a second connecting rod and a toggle type connecting rod group; the multi-eccentric crankshaft comprises a first eccentric part and a second eccentric part, wherein the first eccentric part is symmetrically arranged at two sides of the second eccentric part in pairs, and the first connecting rod and the second connecting rod are respectively connected with the first eccentric part and the second eccentric part; the toggle type connecting rod group comprises a first toggle rod and a second toggle rod which are connected through a connecting pin III, the first connecting rod is connected with the second toggle rod through a connecting pin II, the first toggle rod is connected with the outer sliding block through a connecting pin IV, and the inner sliding block is hinged with the second connecting rod.

As described above, preferably, the lower die includes a fixed plate fixedly disposed on the frame and a moving plate located above the fixed plate.

The double-acting press as described above, preferably, the die adjustment structure comprises a wedge plate and an adjustment member;

the upper end face and the lower end face of the wedge-shaped plate are respectively contacted with the fixed plate and the movable plate, the upper end face of the wedge-shaped plate is an inclined plane, the lower end face of the movable plate is an inclined plane, and the wedge-shaped plate is matched with the movable plate through the inclined plane;

the adjusting piece is connected with the wedge plate, and the adjusting piece is used for driving the wedge plate to horizontally move so as to adjust the distance between the moving plate and the upper die.

As described above, preferably, the fixing plate is further provided with a baffle, the baffle is attached to the moving plate, and the moving direction of the wedge plate is used as front and rear directions, and the baffle and the adjusting piece are respectively located at the front and rear ends of the wedge plate;

the wedge-shaped plate penetrates through the baffle.

The double-acting press as described above, preferably, the adjusting member comprises an adjusting motor and a screw rod connected by a transmission member, the screw rod being connected with the wedge plate.

The double-acting press as described above, preferably, the discharging structure includes a discharging rod penetrating through the lower die, an eccentric shaft contacting with the discharging rod, and a driving member connected with the eccentric shaft;

the eccentric shaft comprises an eccentric shaft body which is positioned below the discharging rod and is in contact with the discharging rod, and a first rotating shaft and a second rotating shaft which are respectively arranged at two ends of the eccentric shaft body, wherein the axis of the first rotating shaft is coincident with that of the second rotating shaft, and the axis of the eccentric shaft body is parallel to that of the first rotating shaft;

the driving piece is connected with the first rotating shaft or the second rotating shaft.

The double acting press as described above, preferably, the drive structure comprises a main motor, a small pulley, a large pulley, a belt, a drive shaft, a meshing gear, a flywheel, a clutch, and a brake;

the small belt pulley is connected with an output shaft of the main motor, and the large belt pulley is connected with the small belt pulley through the belt; the large belt pulley and the meshing gear are respectively sleeved on the transmission shaft, the flywheel is meshed with the meshing gear, the flywheel and the clutch are arranged at one end of the multi-eccentric crankshaft, and the brake is arranged at the other end of the multi-eccentric crankshaft.

As described above, preferably, the top of the frame is further provided with an air tank connected to the clutch and the brake, and the air tank is provided with an air inlet connected to an air source, a clutch connection port connected to the clutch, a brake connection port connected to the brake, and a safety valve.

The double-acting press as described above, preferably, the toggle linkage further includes a third toggle link connected to the second toggle link, and the third toggle link is connected to the second toggle link through a second connecting pin; the other end of the third toggle rod is further provided with an adjusting slide block, and the adjusting slide block is connected with the third toggle rod through a first connecting pin.

(III) beneficial effects

The beneficial effects of the utility model are as follows:

the utility model sets up outer slide block and inner slide block on a press at the same time, the driving structure connects with first and second connecting rod through the multi-eccentric crankshaft, the outer slide block connects with toggle type connecting rod group connected with first connecting rod, the inner slide block connects with second connecting rod, through the above-mentioned structure, the utility model can drive the outer slide block to move downward through first connecting rod and toggle type connecting rod group in the course of rotating the multi-eccentric crankshaft first, carry on the one-time stamping forming to the base material, punch out the shape of the product, form the rough blank, then lock up the upper die and lower die through first connecting rod and toggle type connecting rod group, keep pressure, then drive the inner slide block to descend through second connecting rod, carry on the secondary stamping forming to the rough blank. Therefore, the utility model simplifies the stamping forming process of the workpiece with complex shape and improves the stamping efficiency.

In addition, the distance between the upper die and the lower die is adjusted through the adjusting component, so that the precision of the press machine on the product part is controlled more accurately, the punched product part is separated from the lower die through the discharging structure, and the product is taken out conveniently.

Drawings

FIG. 1 is a front view of a double-action press of the present utility model;

FIG. 2 is a left side view of a double-action press of the present utility model;

FIG. 3 is a top view of a double-action press;

FIG. 4 is a partial top view of a double-action press;

FIG. 5 is a cross-sectional view of FIG. 1;

FIG. 6 is a partial schematic view of FIG. 5;

FIG. 7 is a partial cross-sectional view of a double-action press;

FIG. 8 is a partial schematic view of FIG. 2;

FIG. 9 is a diagram of the trajectory of each node;

FIG. 10 is a left side view (partial) of FIG. 2;

fig. 11 is a partial schematic view of fig. 3.

[ reference numerals description ]

1: a frame; 2: an upper die; 3: a lower die; 4: an outer slider; 5: an inner slide; 6: multiple eccentric crankshafts; 7: a first connecting rod; 8: a second connecting rod; 9: a first connecting pin; 10: a second connecting pin; 11: a third connecting pin; 12: a connecting pin IV; 13: a first toggle rod; 14: a second toggle rod; 15: a toggle rod III; 16: an adjusting slide block; 17: a main motor; 18: a small pulley; 19: a large pulley; 20: a belt; 21: a transmission shaft; 22: a meshing gear; 23: a flywheel; 24: a clutch; 25: a brake; 26: a driving member; 27: an eccentric shaft; 28: a discharging rod; 29: a fixing plate; 30: a moving plate; 31: wedge plate; 32: an inclined plane; 33: adjusting a motor; 34: a screw rod; 35: a baffle; 36: an air barrel; 361: an air inlet; 362: a clutch connection port; 363: a brake connection port; 364: a safety valve; 37: the space between the inner slide block and the outer slide block; 38: a fixing bolt; 39: a first link cover; 40: a second link cover; 41: a fifth connecting pin; 42: a support rod; 43: a rear copper rail; 44: a side copper rail; 45: a front rail plate; 46: side rail plate bottom plate.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.

Example 1

As shown in fig. 1 to 11, the present embodiment provides a double-acting press, which comprises a frame 1, a lower die 3 and a driving structure arranged on the frame 1, a transmission structure connected with the driving structure, an inner slide 5 and an outer slide 4 respectively connected with the transmission structure, an upper die 2 connected with the outer slide 4, a die adjusting structure for adjusting the distance between the upper die 2 and the lower die 3, and a discharging structure for separating the product from the lower die 3, wherein the outer slide 4 is positioned outside the inner slide 5. The transmission structure comprises a multi-eccentric crankshaft 6, a first connecting rod 7, a second connecting rod 8 and a toggle connecting rod group. The multi-eccentric crankshaft 6 includes a first eccentric portion including 2 second eccentric portions. Fig. 5 is a cross-sectional view of fig. 1 taken along a vertical plane in the horizontal direction, with the direction in which the multi-eccentric crankshaft 6 is located being the horizontal direction. As shown in fig. 5 and 6, the 2 first eccentric portions are symmetrically disposed at two sides of the second eccentric portion, the first connecting rod 7 and the second connecting rod 8 are respectively connected with the first eccentric portion and the second eccentric portion, and the relative angle between the first eccentric portion and the second eccentric portion can be set according to actual needs. The toggle type connecting rod group specifically comprises a first toggle rod 13 and a second toggle rod 14 which are connected through a connecting pin three 11, the first connecting rod 7 is connected with the second toggle rod 14 through a connecting pin two 10, the first toggle rod 13 is connected with the outer sliding block 4 through a connecting pin four 12, the inner sliding block 5 is hinged with the second connecting rod 8, and specifically the hinging can be realized through a connecting pin five 41 and the second connecting rod 8.

In the embodiment, an outer sliding block and an inner sliding block are simultaneously arranged on a press, the power of a driving structure is transmitted to a first connecting rod and a second connecting rod through a plurality of eccentric crankshafts, the outer sliding block is connected with the first connecting rod and a toggle type connecting rod group, and the inner sliding block is connected with the second connecting rod. Through the structure, in the process of rotating the multi-eccentric crankshaft for one circle, the first connecting rod and the toggle type connecting rod group drive the outer sliding block to move downwards, the base material is subjected to one-time stamping forming, the shape of a product is stamped out, a rough blank is formed, then the upper die and the lower die are locked through the first connecting rod and the toggle type connecting rod group, and pressure maintaining is carried out. In the pressure maintaining process, the second connecting rod drives the inner slide block to descend, secondary stamping forming is carried out on the rough blank, after the stamping forming of the inner slide block is finished, the second connecting rod drives the inner slide block to ascend, and then the first connecting rod and the toggle type connecting rod group drive the outer slide block and the upper die to ascend, so that stamping of a product part is completed, and the multi-eccentric crankshaft rotates for one circle. Therefore, the double-acting press of the embodiment can simplify the stamping forming process of the workpiece with the complex shape and improve the stamping efficiency. In addition, this embodiment can also adjust the distance between upper die and the lower die through adjusting component for the precision of press to the product part is controlled more accurately, separates the product part that will accomplish the punching press and lower die through ejection of compact structure, and the product part after the completion punching press is convenient for take out from the mould.

The outer and inner slides of the present embodiment reciprocate along rails shown in fig. 11, such as a rear copper rail 43, a side copper rail 44, a front rail plate 45, a side rail plate bottom plate 46, and the like, which are provided on the frame. In addition, the spacing 37 between the inner and outer slides and the first link cover 39 at the top of the first link and the second link cover 40 at the top of the second link can also be seen in fig. 8.

In this embodiment, the lower mold 3 includes a fixed plate 29 and a moving plate 30, the fixed plate 29 is fixedly disposed on the frame 1, and the moving plate 30 is located above the fixed plate 29. The bottom of the fixed plate 29 is also provided with a supporting rod 42 for supporting, and the other end of the supporting rod 42 is arranged on the stand 1. Four corners of the frame 1 are respectively penetrated and fixed from top to bottom through fixing bolts 38.

In the press forming process of product parts, the quality of the product needs to be controlled. Generally, the thickness of a product part needs to be checked, and the thickness is larger or smaller, which belongs to the disqualification of stamping. In order to facilitate control of the quality of the workpiece, the embodiment provides a die adjusting structure. Preferably, as shown in fig. 2 and 10, the die adjusting structure includes a wedge plate 31 and an adjusting member. The upper end face and the lower end face of the wedge plate 31 are respectively contacted and attached with the fixed plate 29 and the movable plate 30, the upper end face of the wedge plate 31 is an inclined face 32, the lower end face of the movable plate 30 is an inclined face 32, and the wedge plate 31 is matched with the movable plate 30 through the inclined face 32. The adjusting piece is connected with the wedge plate 31, and the adjusting piece is used for driving the wedge plate 31 to move horizontally, namely along the direction perpendicular to the multi-eccentric crankshaft, so that the two inclined planes of the wedge plate and the moving plate slide relatively, the height of the moving plate is changed, and the distance between the moving plate 30 and the upper die 2 is adjusted. In order to keep the height of the moving plate to be changed during the horizontal movement of the wedge plate instead of moving with the wedge plate, a baffle 35 is also provided on the fixed plate 29. The baffle 35 is attached to the moving plate 30, and the plane of the baffle is perpendicular to the moving direction of the wedge plate. The baffle 35 and the adjusting member are respectively positioned at the front end and the rear end of the wedge plate 31 by taking the movement direction of the wedge plate 31 as the front and the rear. During the horizontal movement of the wedge plate, the wedge plate 31 may be threaded through the baffle 35.

Preferably, the adjusting member includes an adjusting motor 33 and a screw 34 connected through a transmission member, and the screw 34 is connected with the wedge plate 31. The transmission piece can be of a belt, a gear and other structures, and the screw rod is driven by forward rotation and reverse rotation of the adjusting motor, so that the wedge-shaped plate is pushed to advance or retreat, and the distance between the moving plate and the upper die is adjusted. When the thickness of the product part is detected to be not in accordance with the preset requirement, the screw rod can be driven by the adjusting motor to push the wedge-shaped plate to horizontally move, the distance between the moving plate and the upper die is adjusted, and the quality of the product part obtained by the next stamping forming is ensured to be qualified.

As shown in fig. 1 and 5, the discharging structure includes a discharging rod 28 penetrating through the lower die 3, an eccentric shaft 27 contacting the discharging rod 28, and a driving member 26 connected to the eccentric shaft 27. The eccentric shaft 27 comprises an eccentric shaft body which is positioned below the discharging rod 28 and is in contact with the discharging rod 28, and a first rotating shaft and a second rotating shaft which are respectively arranged at two ends of the eccentric shaft body, wherein the axial lead of the first rotating shaft is coincident with that of the second rotating shaft, and the axial lead of the eccentric shaft body is parallel to but not coincident with that of the first rotating shaft. The driving member 26 is connected to the first shaft or the second shaft.

The driving piece 26 is used for driving the eccentric shaft 27 to rotate, and in the rotating process of the eccentric shaft, the eccentric shaft body is equivalent to a cam, so that the discharging rod can move upwards relative to the lower die, and the product part which is formed by stamping and formed on the lower die can be taken out. The whole eccentric shaft may be supported by the above-mentioned support bar 42, and specifically, both ends of the eccentric shaft may be mounted on the support bar 42 by a bearing or the like. The general rotating shaft can only rotate, the eccentric shaft is adopted in the embodiment, the eccentric shaft is provided with two parallel and non-coincident axes, besides the eccentric shaft can rotate, revolution can be transmitted to the discharging rod through the contact of the eccentric shaft body and the discharging rod, and therefore in the process that the driving piece drives the eccentric shaft to rotate, the eccentric shaft body can drive the discharging rod to move up and down relative to the lower die, and the discharging function is realized.

Preferably, the driving member 26 in this embodiment may be an oil cylinder or a motor.

As shown in fig. 3 to 4, the driving structure includes a main motor 17, a small pulley 18, a large pulley 19, a belt 20, a transmission shaft 21, a meshing gear 22, a flywheel 23, a clutch 24, and a brake 25. The small pulley 18 is connected to the output shaft of the main motor 17, and the large pulley 19 is connected to the small pulley 18 via a belt 20. The large pulley 19 and the meshing gear 22 are respectively sleeved on the transmission shaft 21, the flywheel 23 is meshed with the meshing gear 22, the flywheel 23 and the clutch 24 are arranged at one end of the multi-eccentric crankshaft 6, and the brake 25 is arranged at the other end of the multi-eccentric crankshaft 6. With the above structure, power is transmitted from the main motor to the multi-eccentric crankshaft and then to the outer slide and the inner slide.

Further, an air tub 36 connected to the clutch 24 and the brake 25, respectively, is provided on the top of the frame 1 as an air source for the clutch and the brake. The air tub 36 is provided with an air inlet 361 connected to an external air source, a clutch connection port 362 connected to the clutch 24, a brake connection port 363 connected to the brake 25, and a relief valve 364.

Preferably, the toggle linkage further comprises a toggle lever III 15 connected to the toggle lever II 14. The third toggle rod 15 is connected with the second toggle rod 14 through the second connecting pin 10. The other end of the third toggle rod 15 is also provided with an adjusting slide block 16, and the adjusting slide block 16 is connected with the third toggle rod 15 through a first connecting pin 9. In this embodiment, the first toggle link and the second toggle link have both rotating and moving plane actions, the third toggle link swings around the first connecting pin, and the adjusting slider adjusts the punching height.

In order to protect each rod body structure, an upper bearing bush and a lower bearing bush are respectively arranged on each connecting rod in the embodiment.

The above embodiments are only for explaining the present utility model and do not limit the scope of protection of the present utility model, and those skilled in the art make various variations or modifications within the scope of the claims, which fall within the essential content of the present utility model.

Claims

1. The double-acting press is characterized by comprising a frame, a lower die and a driving structure which are arranged on the frame, a transmission structure connected with the driving structure, an inner slide block and an outer slide block which are respectively connected with the transmission structure, an upper die connected with the outer slide block, a die adjusting structure for adjusting the distance between the upper die and the lower die, and a discharging structure for separating a product from the lower die, wherein the outer slide block is positioned outside the inner slide block;

2. Double acting press according to claim 1, characterized in that the lower die (3) comprises a fixed plate (29) and a moving plate (30), the fixed plate (29) being fixedly arranged on the frame (1), the moving plate (30) being located above the fixed plate (29).

3. A double-action press according to claim 2, wherein the die adjustment structure comprises a wedge plate (31) and an adjustment member;

the upper end face and the lower end face of the wedge-shaped plate (31) are respectively contacted with the fixed plate (29) and the movable plate (30), the upper end face of the wedge-shaped plate (31) is an inclined surface (32), the lower end face of the movable plate (30) is an inclined surface (32), and the wedge-shaped plate (31) is matched with the movable plate (30) through the inclined surface (32);

the adjusting piece is connected with the wedge plate (31), and the adjusting piece is used for driving the wedge plate (31) to horizontally move so as to adjust the distance between the moving plate (30) and the upper die (2).

4. A double-acting press as claimed in claim 3 wherein a baffle (35) is further provided on the fixed plate (29), the baffle (35) is attached to the moving plate (30), the moving direction of the wedge plate (31) is taken as the front and back direction, and the baffle (35) and the adjusting member are respectively located at the front and back ends of the wedge plate (31);

the wedge plate (31) is arranged on the baffle plate (35) in a penetrating way.

5. A double-action press according to claim 3, characterized in that the adjusting member comprises an adjusting motor (33) and a screw (34) connected by a transmission member, the screw (34) being connected with the wedge plate (31).

6. Double-acting press according to claim 1, characterized in that the outfeed structure comprises an outfeed rod (28) penetrating the lower die (3), an eccentric shaft (27) in contact with the outfeed rod (28), and a driving element (26) connected to the eccentric shaft (27);

the eccentric shaft (27) comprises an eccentric shaft body which is positioned below the discharging rod (28) and is in contact with the discharging rod (28), and a first rotating shaft and a second rotating shaft which are respectively arranged at two ends of the eccentric shaft body, wherein the axis of the first rotating shaft is coincident with that of the second rotating shaft, and the axis of the eccentric shaft body is parallel to that of the first rotating shaft;

the driving piece (26) is connected with the first rotating shaft or the second rotating shaft.

7. A double acting press according to claim 1, characterized in that the drive structure comprises a main motor (17), a small pulley (18), a large pulley (19), a belt (20), a drive shaft (21), a meshing gear (22), a flywheel (23), a clutch (24) and a brake (25);

the small belt pulley (18) is connected with an output shaft of the main motor (17), and the large belt pulley (19) is connected with the small belt pulley (18) through the belt (20); the large belt pulley (19) and the meshing gear (22) are respectively sleeved on the transmission shaft (21), the flywheel (23) is meshed with the meshing gear (22), the flywheel (23) and the clutch (24) are arranged at one end of the multi-eccentric crankshaft (6), and the brake (25) is arranged at the other end of the multi-eccentric crankshaft (6).

8. Double acting press according to claim 7, characterized in that the top of the frame (1) is further provided with an air tub (36) connected to the clutch (24) and the brake (25), respectively, the air tub (36) is provided with an air inlet (361) connected to an air source, a clutch connection port (362) connected to the clutch (24), a brake connection port (363) connected to the brake (25), and a safety valve (364).

9. Double-action press according to claim 1, characterized in that the toggle linkage further comprises a toggle lever three (15) connected to the toggle lever two (14), the toggle lever three (15) being connected to the toggle lever two (14) by means of a connecting pin two (10); the other end of the third toggle rod (15) is further provided with an adjusting slide block (16), and the adjusting slide block (16) is connected with the third toggle rod (15) through a first connecting pin (9).