CN219006914U

CN219006914U - Mechanical press

Info

Publication number: CN219006914U
Application number: CN202223549253.3U
Authority: CN
Inventors: 林雄星; 韩玉桥
Original assignee: Guangxi Guanzai Automation Equipment Co ltd
Current assignee: Guangxi Guanzai Automation Equipment Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-12
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a mechanical press, which comprises a pressing part and a pressure supplying part; the pressing part comprises a gear motor, a small synchronous wheel, a large synchronous wheel, a synchronous belt, a screw rod, a sliding block, a pushing and pressing frame and a force transmission part, wherein the small synchronous wheel is connected with the gear motor, the synchronous belt is sleeved on the large synchronous wheel and the small synchronous wheel, the driving end of the screw rod is connected with the large synchronous wheel, the screw rod extends towards the direction far away from the gear motor, the sliding block is sleeved on the screw rod, and one end of the pushing and pressing frame is connected with the sliding block; the pushing frame can push the force transmission part in the direction away from the large synchronous wheel so as to push the force transmission part; the pressure supply part comprises a relay plate and a pressure transmission column, the relay plate is contacted with the force transmission part, the thrust force can act on the relay plate through the force transmission part, the pressure supply station is arranged on one side of the back of the relay plate, which is stressed by the thrust force, and the pressure transmission column is arranged on the relay plate and corresponds to the pressure supply station. The utility model can apply a sufficient and stable pressure to the mold.

Description

Mechanical press

Technical Field

The utility model relates to the technical field of injection molding and pressure supply, in particular to a mechanical press.

Background

The press (including punching machine and hydraulic press) is a universal press with exquisite structure. The press has the characteristics of wide application, high production efficiency and the like, and can be widely applied to cutting, punching, blanking, bending, riveting, forming and other processes. In the prior art, a pneumatic press is mostly adopted to complete the supercharging operation. The pneumatic press is a press processing equipment which uses air as working medium to make blank material undergo the processes of forming processing, and can be extensively used in the processes of punching shear, bending, stretching and extrusion, etc. so as to directly produce finished product or semi-finished product.

In the operation process of the injection molding equipment, the method mainly comprises the following steps: the die is formed by combining two mutually-attached die plates, the two die plates are firstly quickly close to a preset distance during operation, and then the two die plates are slowly attached, so that the two die plates can be prevented from being damaged due to high-speed collision; after the two mold plates are attached, the pneumatic press raises the pressure to a preset pressure, then one of the mold plates is ensured to be fixed, the preset pressure is applied to the other mold plate, so that the two mold plates are attached as much as possible, and then injection molding operation is carried out; after the injection molding operation is completed, the two mold plates are separated, and before the two mold plates are separated, the pressure output part needs to be quickly removed to facilitate the quick separation of the two mold plates.

When the pneumatic press should be used in the above working process, there are the following problems:

1. the pneumatically driven press has a significant disadvantage in that the working pressure of the press is low due to the easy leakage of gas, and cannot meet the requirement of a large output force. Therefore, how to keep the output pressure large and stable when applying pressure to the die plate is a problem to be solved.

2. For the quick separation of the two die plates by quickly withdrawing the pressure output part, the pressure release speed of the air pressure press is uniform when the air pressure press releases pressure, and the air pressure press still contacts the die plates after the air pressure press does not generate pressure on the die plates, so that the two die plates can be separated after the pressure output part of the air pressure press is only waited to completely contact the die plates, and the waiting time of the process is longer, so that the operation progress is prolonged. Therefore, how to quickly separate the pressure output member from the die plate is another problem to be solved.

Disclosure of Invention

The present utility model is directed to solving one of the above-mentioned problems, and provides a mechanical press capable of applying a sufficiently large and stable pressure to a die plate.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a mechanical press comprises a pressing part and a pressing part;

the pressing piece comprises a gear motor, a small synchronous wheel, a large synchronous wheel, a synchronous belt, a screw rod, a sliding block, a pushing frame and a force transmission part, wherein the small synchronous wheel is connected with the gear motor, the large synchronous wheel and the small synchronous wheel are arranged on the same side, the synchronous belt is sleeved on the large synchronous wheel and the small synchronous wheel, the driving end of the screw rod is connected with the large synchronous wheel, the screw rod extends in a direction far away from the gear motor, the sliding block is sleeved on the screw rod, and one end of the pushing frame is connected with the sliding block;

the pushing frame can push the force transmission part in a direction away from the large synchronous wheel so as to push the force transmission part, and the force transmission part can ascend relative to the pushing frame under the action of the pushing force; the pushing frame can pull the force transmission part towards the direction of the large synchronous wheel so that the force transmission part can descend relative to the pushing frame;

the pressure supply part comprises a relay plate and a pressure transmission column, the relay plate is in contact with the force transmission part, the thrust force can act on the relay plate through the force transmission part, a pressure supply station is arranged on one side, deviating from the thrust force, of the relay plate, and the pressure transmission column is arranged on the relay plate and corresponds to the pressure supply station.

Further, the pressure transmission column is connected with a driving part, and the driving part can drive the pressure transmission column to move into the pressure supply station or move out of the pressure supply station.

Further, the force transmission part comprises a bottom plate, a lower inclined top block, a lifting limiting frame and an upper sliding block, wherein the bottom plate is arranged at one end of the pushing frame, which is away from the large synchronous wheel, and extends towards the direction away from the pushing frame; the lifting limiting frame is arranged on the bottom plate, the upper sliding block is movably arranged in the lifting limiting frame, the upper sliding block is positioned on one side of the lower inclined jacking block, which is away from the bottom plate, the bottom surface of the upper sliding block is in contact with the balls, and the lifting limiting frame can limit the upper sliding block to ascend or descend relative to the pushing frame; the relay plate is contacted with one side of the upper sliding block, which is away from the lower inclined jacking block, and the thrust force acts on the lower inclined jacking block and then can act on the relay plate through the upper sliding block.

Further, the lower inclined top block comprises an inclined sliding block, a lower stop block and two lower limiting blocks, wherein the inclined sliding block is slidingly arranged on the bottom plate, one end of the inclined sliding block is in contact with the pushing frame, the lower stop block is arranged in the middle of the top surface of the inclined sliding block and extends along the length direction of the top surface of the inclined sliding block, the vertical distance between the top surface of the lower stop block and the top surface of the inclined sliding block and the bottom plate is gradually reduced along the direction away from the pushing frame, and the balls are movably embedded on the top surface of the lower stop block; the two lower limiting blocks are arranged at one end, away from the pushing frame, of the top surface of the inclined sliding block and are fixed at two opposite sides of the lower stop block.

Further, the lifting limiting frame comprises a vertical plate and two cushion blocks, one end of the vertical plate is arranged at one end of the bottom plate, which is away from the pushing frame, and the vertical plate extends towards the direction of the relay plate, and the two cushion blocks are arranged at one end of the vertical plate, which is away from the bottom plate, and are arranged at intervals along the width direction of the vertical plate; one end of the upper sliding block, which faces the vertical plate, is provided with a cam bearing follower, and a roller of the cam bearing follower is positioned between the two cushion blocks and is in contact with the two cushion blocks.

Further, an arc-shaped groove is formed in the middle of one surface of the relay plate, which faces the upper sliding block; the lower inclined jacking block further comprises a supporting cambered surface column and a supporting block, the supporting cambered surface column is arranged in the middle of one side, away from the lower inclined jacking block, of the upper sliding block, the supporting cambered surface column comprises a cambered surface, and the cambered surface is limited in the cambered groove; the support block is arranged on the upper sliding block and is positioned on two opposite sides of the support cambered surface column, and one side, deviating from the upper sliding block, of the support block is contacted with the relay plate.

Further, the pushing frame is provided with a pull-back groove along the length direction of the wire rod; the product casting die further comprises a screw rod sleeve and a pull-back spring, one end of the screw rod sleeve is located in the pull-back groove, the other end of the screw rod sleeve movably penetrates through one end of the pushing frame, which is away from the large synchronous wheel, and then is connected with the force transmission part, and the pull-back spring is located in the pull-back groove and is sleeved on the screw rod sleeve.

Further, the output power of the gear motor is 4.4kw, and the radius ratio of the small synchronizing wheel to the large synchronizing wheel is 1.00:2.33-2.50.

Further, a pressure sensor is arranged at the end part of one end of the pushing frame, which is contacted with the force transmission part, and the pressure sensor is contacted with the force transmission part; the pressure supply station is provided with an in-place sensor, an out-of-place sensor is arranged outside the pressure supply station, and the in-place sensor and the out-of-place sensor are both used for sensing the position of the pressure transmission column.

Further, the bottom plate is a steel plate after quenching processing.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. compare and directly drive the lead screw through gear motor and rotate, through setting up of little synchronizing wheel, big synchronizing wheel and hold-in range, can slowly increase bulldoze the thrust of frame to the power portion, and this thrust is greater than the direct force that produces through gear motor drive lead screw rotation, and can carry out the control of size to bulldozing the power that the frame output. The rising distance of the force transmission part can be predicted, and the rising distance of the force transmission part can be adjusted to a preset distance in the design process, so that the force transmission part slowly rises in the process of gradually increasing the pressure, and the effect of slowly attaching the two die plates is finally realized. And the pressure of the die plate can be kept stable through the control of the gear motor.

2. After the injection molding operation is finished, the pressure transmission column gradually weakens the pressure to the mold plates in the descending process of the force transmission part relative to the pushing frame, the pressure can acquire data in the pressure sensor, when the pressure is a pressure value which does not affect the separation of the mold plates, the push-pull cylinder moves the corresponding pressure transmission column out of the pressure supply station, so that the separated space can be vacated for the two mold plates, and the two mold plates can be conveniently and rapidly separated. It can be seen that the movable arrangement of the pressure transfer posts can rapidly separate the pressure transfer posts from the die plate.

Drawings

Fig. 1 is a schematic structural view of a mechanical press.

Fig. 2 is a schematic view of the internal structure of the pressure producing member.

Fig. 3 is a schematic structural view of the downward sloping roof block.

Fig. 4 is a schematic cross-sectional view of a force transmitting portion and a pressure supplying member.

Fig. 5 is a schematic diagram of connection between the lifting limiting frame and the pressure supplying member.

In the drawings, a 10-speed reducing motor, a 11-small synchronous wheel, a 12-large synchronous wheel, a 13-synchronous belt, a 14-screw rod, a 15-sliding block, a 16-pushing frame, a 161-pulling groove, a 17-screw sleeve, a 18-pulling spring, a 2-force transmitting part, a 21-bottom plate, a 211-wire guide rail, a 212-roller, a 22-lower inclined top block, a 221-inclined sliding block, a 222-lower stop block, a 223-lower stop block, a 224-ball, a 225-lower cam bearing follower, a 23-lifting limit frame, a 231-vertical plate, a 232-cushion block, a 24-upper sliding block, a 25-cam bearing follower, a 26-supporting arc column, 261-arc surface, a 27-supporting block, a 3-pressing part, a 31-relay plate, a 311-pressing station, a 312-arc groove, a 32-pressing column, a 33-guiding plate, a 34-synchronous plate, a 35-sensing block, a 36-mounting table, a 37-pushing and pulling cylinder, a 4-sensor, a 5-moving-out sensor, a 6-mounting frame, a 60-front end plate, a 61-side plate, a 61-62-side plate, and a rear end plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 5, a preferred embodiment of the present utility model provides a mechanical press for applying pressure to a mold plate of an injection molding apparatus. Comprising a mounting frame 6, a pressure producing part and a pressure supplying part 3.

The pressing part comprises a gear motor 10, a small synchronizing wheel 11, a large synchronizing wheel 12, a synchronizing belt 13, a screw rod 14, a sliding block 15, a pushing frame 16 and a force transmission part 2. The gear motor 10 is installed in the one end of mounting bracket 6, and little synchronizing wheel 11 is connected with gear motor 10, and big synchronizing wheel 12 and little synchronizing wheel 11 homonymy set up and big synchronizing wheel 12 are fixed in on the mounting frame 6, and hold-in range 13 cup joints on big synchronizing wheel 12 and little synchronizing wheel 11. The lead screw 14 is fixed in the mounting frame 6, the drive end of the lead screw 14 is connected with the large synchronizing wheel 12, the lead screw 14 extends in a direction far away from the gear motor 10, the sliding block 15 is sleeved on the lead screw 14, and one end of the pushing frame 16 is connected with the sliding block 15.

The force transmission part 2 is arranged at one end of the pushing frame 16 away from the sliding block 15 and is contacted with the pushing frame 16, and specifically, a pressure sensor is arranged at the end of one end of the pushing frame 16 contacted with the force transmission part 2, and the pressure sensor is contacted with the force transmission part 2. The pushing frame 16 can push the force transmission part 2 in a direction away from the large synchronizing wheel 12 so as to push the force transmission part 2, the force transmission part 2 can be lifted relative to the pushing frame 16 by the pushing force, and the pressure sensor is used for sensing the magnitude of the pushing force and obtaining pressure data. The force transmission part 2 can also be lowered relative to the pressing frame 16.

The pushing frame 16 can pull the force transmission part 2 towards the direction of the large synchronizing wheel 12, so that the force transmission part 2 can descend relative to the pushing frame 16, specifically, the pushing frame 16 is provided with two pull-back grooves 161 along the length direction of the screw rod 14, and the number of the pull-back grooves 161 is two, and the two pull-back grooves 161 are distributed on two opposite sides of the pushing frame 16; the pressure producing piece further comprises two groups of pull-back pieces, one group of pull-back pieces is arranged in one pull-back groove 161, each pull-back piece comprises a screw rod sleeve 17 and a pull-back spring 18, one end of each screw rod sleeve 17 is arranged in the corresponding pull-back groove 161, the other end of each screw rod sleeve 17 movably penetrates through one end of the pushing frame 16, which is far away from the large synchronous wheel 12, and then is connected with the force transmission part 2, the outer diameter of one end of each screw rod sleeve 17 is larger than the outer diameter of the other end of each screw rod sleeve 17, and each pull-back spring 18 is arranged in each pull-back groove 161 and sleeved on each screw rod sleeve 17.

The pressure supply part 3 comprises a relay plate 31 and a pressure transmission column 32, the relay plate 31 is in contact with the force transmission part 2, the thrust force can act on the relay plate 31 through the force transmission part 2, a pressure supply station 311 is arranged on one side of the relay plate 31, which is away from the thrust force, and the pressure transmission column 32 is arranged on the relay plate 31 and can correspond to the pressure supply station 311.

The gear motor 10 is started to drive the small synchronous wheel 11 to rotate along the first circumference, the small synchronous wheel 11 drives the large synchronous wheel 12 to rotate through the synchronous belt 13, the large synchronous wheel 12 drives the screw rod 14 to rotate, the screw rod 14 drives the sliding block 15 to move towards the direction far away from the large synchronous wheel 12 and pushes the force transmission part 2 through the pushing frame 16 so as to push the force transmission part 2, and the pushing force is fed back on the pressure sensor to obtain pressure data. During pushing of the force transmitting portion 2 by the pushing frame 16, the force transmitting portion 2 rises relative to the pushing frame 16 by the pushing force. In the process of ascending the force transmission part 2, the pressure transmission column 32 ascends relative to the pushing frame 16, at this time, the pressure transmission column 32 pushes the two mold plates to be attached, when the preset distance between the two mold plates is reduced to 0, the thrust is continuously output, at this time, the mold plates can be supplied with pressure, when the pressure data of the thrust reaches the preset pressure, the gear motor 10 stops driving, at this time, the pushing frame 16 pushes the force of the force transmission part 2, namely, the pressure of the pressure transmission column 32 to the mold plates can be kept stable, and the injection molding operation can be performed.

In the above-described process, the thrust of the pressing frame 16 to the force transmitting portion 2 can be gradually increased by the arrangement of the small synchronizing wheel 11, the large synchronizing wheel 12, and the timing belt 13, compared with the case where the screw 14 is directly driven to rotate by the gear motor 10, and the thrust is larger than the force generated by the screw 14 directly driven to rotate by the gear motor 10, and the force output by the pressing frame 16 can be controlled. Because the force transfer part 2 can rise and the rising distance thereof can be predicted, the rising distance of the force transfer part 2 can be adjusted to a preset distance in the design process, so that the force transfer part 2 slowly rises in the process of gradually increasing the pressure, and the effect of slowly attaching two die plates is finally realized. And the pressure of the die plate can be kept stable by the control of the gear motor 10.

In addition, from the foregoing pressure supplying process, the pressure supplying process of the pressure producing part can simultaneously complete the step of slowly attaching two mold plates and gradually reaching the preset pressure, and compared with the prior art, the pressure supplying process of the pressure producing part can save the time of waiting for the pneumatic press to rise to the preset pressure, thereby accelerating the pressure supplying speed.

In the process that the pushing frame 16 pushes the force transmission part 2, one end of the screw sleeve 17 compresses the pull-back spring 18, the pull-back spring 18 deforms to generate elastic force, when the gear motor 10 drives the small synchronous wheel 11 to rotate along the second circumferential direction, the second circumferential direction is opposite to the first circumferential direction, the screw rod 14 drives the sliding block 15 to move towards the large synchronous wheel 12, the elastic force of the pull-back spring 18 pulls the force transmission part 2 towards the large synchronous wheel 12 to be in contact with a pressure sensor on the pushing frame 16, and the force transmission part 2 descends relative to the pushing frame 16.

In the present embodiment, the mounting frame 6 includes a front end plate 60, two side plates 61, a top plate 62, and a rear end plate 63. The two side plates 61 are disposed opposite to each other, and the front end plate 60 is connected to one end of the two side plates 61. The gear motor 10 is mounted at one end of the front end plate 60, and the large synchronizing wheel 12 is fixed at the other end of the front end plate 60 and is located at a side of the front end plate 60 away from the side plate 61 with the gear motor 10. The screw 14 is fixed between the two side plates 61, and the driving end of the screw 14 extends from the front end plate 60 to the large synchronizing wheel 12 and is connected with the large synchronizing wheel 12. Opposite sides of the top plate 62 are connected to one side of the two side plates 61 facing the gear motor 10, and one end of the top plate 62 is connected to the front end plate 60. One end of the rear end plate 63 is connected to the other end of the top plate 62, and the other end of the rear end plate 63 extends into the push frame 16 and is located between the two pullback grooves 161. The end of the lead screw 14 facing away from the drive end is connected to a rear end plate 63. Through the structural arrangement of the mounting frame 6, the space arrangement of the gear motor 10, the small synchronous wheel 11, the large synchronous wheel 12, the synchronous belt 13, the screw rod 14, the sliding block 15 and the pushing frame 16 is more compact, and the mounting space is saved.

In this embodiment, the mechanical press needs to be applied to provide a pressure of 384.9n.m for an injection molding apparatus, and the small synchronous wheel 11 is driven by the gear motor 10 with output power of 4.4kw, which is selected from the group consisting of An Chuan for cost and performance. The radius ratio of the small synchronizing wheel 11 to the large synchronizing wheel 12 is 1.00:2.33-2.50, preferably the ratio of the radius of the small synchronizing wheel 11 to the large synchronizing wheel 12 is 1.00:2.33. table 1 shows the range of the output pressure of the pressure transmitting column 32 under different radius ratios of the small synchronizing wheel 11 and the large synchronizing wheel 12 driven by the gear motor 10.

TABLE 1

As can be seen from table 1, when the radius ratio of the small synchronizing wheel 11 to the large synchronizing wheel 12 is 1.00: at 2.33, the pressure output by the pressure transfer column 32 can already reach 384.9n.m, although when the radius ratio is less than 1.00: the pressure output by the post-pressure transmission column 32 is also gradually increased after 2.33, but a plurality of experiments show that based on the integral structure of the gear motor 10 with the output power of 4.4kw and the mechanical press, when the radius ratio is smaller than 1.00: after 2.50, if the preset output pressure is reached, the energy consumed by the gear motor 10 will be greatly increased, and therefore, the radius ratio is selected to be in the range of 1.00:2.33-2.50, the cost is less and the working efficiency is higher.

In the present embodiment, the force transmitting portion 2 includes a bottom plate 21, a lower diagonal top piece 22, a lifting/lowering stopper 23, and an upper slider 24. The bottom plate 21 is arranged at one end of the pushing frame 16 away from the large synchronizing wheel 12 and extends in a direction away from the pushing frame 16, two opposite side edges of the bottom plate 21 are connected with the two side plates 61, the bottom plate 21 is a quenched steel plate, the bottom plate can be ensured not to deform due to stress after being pressed on a die plate, and the force output to the lower inclined top block 22 is ensured to be uniform and stable.

The lower oblique top block 22 is slidably disposed on the bottom plate 21 and contacts with the pushing frame 16, the vertical distance from the top surface of the lower oblique top block 22 to the bottom plate 21 gradually decreases along the direction away from the pushing frame 16, and the top surface of the lower oblique top block 22 is movably embedded with balls 224, specifically: the lower inclined top block 22 comprises an inclined sliding block 221, a lower stop block 222 and two lower limiting blocks 223. The inclined sliding block 221 is slidably disposed on the bottom plate 21, and in detail, the bottom plate 21 is provided with two conductor rails 211 along the width direction, and a limiting guide groove is formed between the two conductor rails 211; the conductor rail 211 extends along the length direction of the bottom plate 21, a guide groove is formed in the conductor rail 211 along the length direction, and a plurality of rollers 212 are arranged in the guide groove in a linear array manner; two lower cam bearing followers 225 are arranged in the middle of the bottom of the inclined sliding block 221, rollers of the two lower cam bearing followers 225 are movably limited in the limiting guide grooves and are contacted with the two lead rails 211, the bottom surface of the inclined sliding block 221 is contacted with the rollers 212, and one end of the inclined sliding block 221 is contacted with a pressure sensor on the pushing frame 16; the arrangement of the lower cam bearing follower 225 can ensure that the displacement of the inclined slide block 221 moves along the limit guide groove in a straight line all the time, and the arrangement of the roller 212 can reduce the friction between the inclined slide block 221 and the bottom plate 21 during the movement.

The lower stop block 222 is arranged in the middle of the top surface of the inclined slide block 221, the lower stop block 222 extends along the length direction of the top surface of the inclined slide block 221, the vertical distance between the top surface of the lower stop block 222 and the bottom plate 21 is gradually reduced along the direction away from the pushing frame 16, the top surface of the lower stop block 222 is movably embedded with the balls 224, in detail, the number of the balls 224 is a plurality of and the balls 224 are arranged in the middle of the lower stop block 222 at intervals in a straight line extending along the length direction of the lower stop block 222, and only the top surface of the balls 224 is exposed out of the lower stop block 222; the two lower limiting blocks 223 are arranged at one end of the top surface of the inclined sliding block 221, which is away from the pushing frame 16, and are fixed at two opposite sides of the lower limiting block 222, and the two lower limiting blocks 223 can further limit the lower limiting block 222 to the middle of the top surface of the inclined sliding block 221.

The lifting limiting frame 23 is arranged on the bottom plate 21, specifically, the lifting limiting frame 23 comprises a vertical plate 231 and two cushion blocks 232, one end of the vertical plate 231 is arranged at one end of the bottom plate 21, which is away from the pushing frame 16, and the vertical plate 231 extends towards the relay plate 31, and the two cushion blocks 232 are arranged at one end of the vertical plate 231, which is away from the bottom plate 21, and are arranged at intervals along the width direction of the vertical plate 231, so that a guide rail is formed.

The upper slider 24 is movably disposed in the lifting limiting frame 23, and the upper slider 24 is disposed at one side of the lower inclined top block 22 away from the bottom plate 21, the bottom surface of the upper slider 24 is in contact with the balls 224, so that the contact between the upper slider 24 and the lower stopper 222 is only on a straight line formed by connecting the balls 224, the thrust of the lower stopper 222 to the upper slider 24 is only collected on the contact surface between the balls 224 and the upper slider 24, the friction between the lower stopper 222 and the upper slider 24 is reduced, the thrust is concentrated on a straight line and acts on the upper slider 24, and the thrust is more concentrated and effectively acts.

The lifting limiting frame 23 can limit the upper slider 24 to ascend or descend relative to the pushing frame 16, specifically, one end of the upper slider 24 facing the vertical plate 231 is provided with a cam bearing follower 25, and a roller of the cam bearing follower 25 is located between two cushion blocks 232 and contacts with the two cushion blocks 232. When the pushing frame 16 pushes the force transmitting portion 2, the pushing frame 16 pushes the inclined slider 221 in a direction away from the large synchronizing wheel 12 along the length direction of the bottom plate 21, the inclined slider 221 pushes the upper slider 24 through the balls 224, the upper slider 24 transmits the pushing force to the cam bearing follower 25, and the cam bearing follower 25 rises in a direction away from the bottom plate 21 along the guide rail between the two pads 232, so that the upper slider 24 rises relative to the pushing frame 16. When the screw rod 14 drives the slide block 15 to move towards the large synchronizing wheel 12, the inclined slide block 221 is pulled towards the large synchronizing wheel 12 by the elastic force of the pull-back spring 18, and the upper slide block 24 descends relative to the pushing frame 16 under the guidance of the cam bearing follower 25.

The relay plate 31 contacts with one side of the upper slider 24 away from the lower diagonal jack 22, and after thrust force acts on the lower diagonal jack 22, the relay plate 31 can act on the upper slider 24. Specifically, an arc groove 312 is arranged in the middle of one surface of the relay board 31 facing the upper slider 24, and the arc groove 312 extends along the width direction of the relay board 31; the lower inclined jacking block 22 further comprises a supporting arc-surface column 26 and a supporting block 27, the supporting arc-surface column 26 is arranged in the middle of one side, facing away from the lower inclined jacking block 22, of the upper sliding block 24, the supporting arc-surface column 26 comprises an arc surface 261, and the arc surface 261 is limited in the arc groove 312. The supporting blocks 27 are arranged on the upper sliding block 24 and are positioned on two opposite sides of the supporting cambered surface column 26, and one side of the supporting blocks 27, which is away from the upper sliding block 24, is contacted with the relay board 31. The force applied by the upper slider 24 can be concentrated on the supporting arc-shaped columns 26 and the two supporting blocks 27 and then acts on the relay plate 31, so that the force applied by the relay plate 31 can be concentrated.

In this embodiment, the pressure transfer column 32 is connected to a driving part, and the driving part can drive the pressure transfer column 32 to move into the pressure supply station 311 or move out of the pressure supply station 311. Specifically, the number of the pressure transfer columns 32 is four, the four pressure transfer columns 32 are divided into two groups, each group comprises two pressure transfer columns 32, the two groups of pressure transfer columns 32 are distributed at two opposite ends of the relay plate 31, one group of pressure transfer columns 32 is connected with a driving part, and the pressure supply station 311 is positioned between the two groups of pressure transfer columns 32; the driving part comprises a guide plate 33, a synchronous plate 34, a sensing block 35, an installation table 36 and a push-pull cylinder 37, wherein the guide plate 33 is arranged on the relay plate 31 and extends along the length direction of the relay plate 31; the push-pull air cylinder 37 adopts Aden air cylinder ACP 32.50, the push-pull air cylinder 37 is arranged at one end of the guide plate 33, which is far away from the other driving part, the synchronous plate 34 is sheathed on the guide plate 33 in a sliding way and is vertical to the guide plate 33, the synchronous plate 34 is connected with the working end of the push-pull air cylinder 37, and two pressure transfer columns 32 corresponding to one group of pressure transfer columns 32 are arranged at the opposite ends of the synchronous plate 34. A sensing block 35 is mounted to the end of the synchronizing plate 34. The number of the installation tables 36 is two, and the two installation tables 36 are arranged on two opposite sides of the relay board 31 and extend along the length direction of the relay board 31. The two opposite ends of the mounting table 36 are respectively provided with a positioning sensor 4 and a moving-out sensor 5, in detail, the middle part of the mounting table 36 is connected to the relay board 31, each end of the mounting table 36 extends from the compression station 311 to the push-pull cylinder 37, the positioning sensor 4 is arranged on one side of the mounting table 36 corresponding to the compression station 311, the moving-out sensor 5 is arranged on one side of the mounting table 36 corresponding to the push-pull cylinder 37, and the positioning sensor 4 and the moving-out sensor 5 sense the positions of a group of corresponding pressure transmitting columns 32 through the displacement of the sensing block 35.

When the push-pull cylinder 37 drives the synchronous plate 34 to move along the length direction of the guide plate 33 towards the direction of the other driving part, a corresponding group of pressure transmission columns 32 can move into the pressure supply station 311, at the moment, the sensing block 35 is displaced to the position sensor 4, and the position sensor 4 obtains a position signal, so that the pressure transmission columns 32 can be ensured to be used for pressure supply. When the push-pull air cylinder 37 drives the synchronous plate 34 to move along the length direction of the guide plate 33 in a direction away from the other driving part, the corresponding group of pressure transmission columns 32 can be moved out of the pressure supply station 311, and at the moment, the sensing block 35 is moved to the position of the movement out sensor 5, and the movement out sensor 5 obtains a movement out signal. After the injection molding operation is finished, in the process that the force transfer part 2 descends relative to the pushing frame 16, the pressure of the pressure transfer column 32 on the mold plates is gradually weakened, data can be obtained in the pressure sensor, when the pressure is a pressure value which does not affect the separation of the mold plates, the push-pull cylinder 37 moves the corresponding pressure transfer column 32 out of the pressure supply station 311, so that a separated space can be vacated for the two mold plates, and the two mold plates can be separated quickly conveniently. It can be seen that the movable arrangement of the pressure transfer posts 32 enables the pressure transfer posts 32 to be quickly separated from the die plate.

The embodiment also provides a pressure supplying and removing method for the injection molding equipment, which is used for carrying out the operations of film combination, pressure application in the injection molding process and pressure removing after the injection molding is completed on two mold blocks at a preset distance, wherein the two mold blocks at the preset distance comprise a fixed mold plate and a movable mold plate, and the fixed mold plate and the movable mold plate are oppositely arranged. The method specifically comprises the following steps:

providing means for: the mechanical press further comprises a control system, wherein the pressure sensor, the in-place sensor 4 and the out-of-place sensor 5 are all connected with the control system, the control system is used for receiving data of the pressure sensor, the in-place sensor 4 and the out-of-place sensor 5 and injection molding operation progress data of injection molding equipment and controlling operation of the gear motor 10 and the push-pull cylinder 37, and concretely comprises a PLC controller and a control panel, and the PLC controller is respectively connected with the pressure sensor, the in-place sensor 4, the out-of-place sensor 5, the gear motor 10 and the push-pull cylinder 37. The PLC controller receives a control instruction from the control panel to control the gear motor 10 and the push-pull cylinder 37.

A mechanical press is placed under the pre-injection movable mold plate and the press station 311 is brought into contact with the movable mold plate.

Film combination at a low speed: the push-pull cylinder 37 is started to enable the two groups of pressure transmitting columns 32 to move into the pressure supplying station 311, and the positioning sensor 4 senses the positioning signal and feeds the positioning signal back to the control system. The gear motor 10 is started to move the slide block 15 along the screw rod 14 in a direction away from the large synchronizing wheel 12, and at this time, the force transmission part 2 is lifted up toward the movable mold plate relative to the pushing frame 16. The pressure sensor senses the pressure at any time to obtain pressure data, and feeds the pressure data back to the control system in real time. Specific: the upper slide block 24 is lifted towards the direction of the movable die plate under the pushing action of the lower inclined top block 22, the upper slide block 24 pushes the pressure transmission column 32 to lift in the lifting process, the movable die plate is slowly pushed towards the direction of the fixed die plate in the lifting process of the pressure transmission column 32, so that the two die plates are slowly attached, and in the process, the pressure data is always the first pressure value.

Pressure input: after the two mold plates are attached, the pressure data gradually rises from a first pressure value, and when the pressure data reaches a preset pressure, the control system controls the gear motor 10 to pause, and the injection molding equipment starts injection molding operation;

evacuation of the pressure transmitting column 32: when the injection molding operation is finished, the gear motor 10 is started again, the sliding block 15 moves along the screw rod 14 towards the large synchronizing wheel 12, when the pressure data is the first pressure value again, the control system controls the push-pull air cylinder 37 to drive the pressure transmission column 32 to move out of the pressure supply station 311, and when the moving-out sensor 5 senses a moving-out signal and feeds the moving-out signal back to the control system, the control system controls the push-pull air cylinder 37 to pause; at this time, the two mold plates can be rapidly separated.

The foregoing description is directed to the preferred embodiments of the present utility model, but the embodiments are not intended to limit the scope of the utility model, and all equivalent changes or modifications made under the technical spirit of the present utility model should be construed to fall within the scope of the present utility model.

Claims

1. A mechanical press, characterized in that: comprises a pressure producing piece and a pressure supplying piece (3);

the pressing piece comprises a gear motor (10), a small synchronous wheel (11), a large synchronous wheel (12), a synchronous belt (13), a screw rod (14), a sliding block (15), a pushing frame (16) and a force transmission part (2), wherein the small synchronous wheel (11) is connected with the gear motor (10), the large synchronous wheel (12) and the small synchronous wheel (11) are arranged on the same side, the synchronous belt (13) is sleeved on the large synchronous wheel (12) and the small synchronous wheel (11), the driving end of the screw rod (14) is connected with the large synchronous wheel (12) and the screw rod (14) extends towards the direction far away from the gear motor (10), the sliding block (15) is sleeved on the screw rod (14), and one end of the pushing frame (16) is connected with the sliding block (15).

The force transmission part (2) is arranged at one end of the pushing frame (16) away from the sliding block (15) and is in contact with the pushing frame (16), the pushing frame (16) can push the force transmission part (2) in a direction away from the large synchronous wheel (12) so as to push the force transmission part (2), and the force transmission part (2) can ascend relative to the pushing frame (16) under the action of the pushing force; the pushing frame (16) can pull the force transmission part (2) towards the direction of the large synchronous wheel (12) so that the force transmission part (2) can descend relative to the pushing frame (16);

the pressure supply piece (3) comprises a relay plate (31) and a pressure transmission column (32), the relay plate (31) is in contact with the force transmission part (2), the thrust force can act on the relay plate (31) through the force transmission part (2), a pressure supply station (311) is arranged on one side, deviating from the thrust force, of the relay plate (31), and the pressure transmission column (32) is arranged on the relay plate (31) and corresponds to the pressure supply station (311).

2. A mechanical press according to claim 1, wherein: the pressure transmission column (32) is connected with a driving part, and the driving part can drive the pressure transmission column (32) to move into the pressure supply station (311) or move out of the pressure supply station (311).

3. A mechanical press according to claim 1 or 2, characterized in that: the force transmission part (2) comprises a bottom plate (21), a lower inclined top block (22), a lifting limiting frame (23) and an upper sliding block (24), wherein the bottom plate (21) is arranged at one end of the pushing frame (16) deviating from the large synchronous wheel (12) and extends towards the direction far away from the pushing frame (16), the lower inclined top block (22) is slidingly arranged on the bottom plate (21) and is contacted with the pushing frame (16), the vertical distance from the top surface of the lower inclined top block (22) to the bottom plate (21) is gradually reduced along the direction far away from the pushing frame (16), and balls (224) are movably embedded on the top surface of the lower inclined top block (22); the lifting limiting frame (23) is arranged on the bottom plate (21), the upper sliding block (24) is movably arranged in the lifting limiting frame (23), the upper sliding block (24) is positioned on one side of the lower inclined top block (22) which is away from the bottom plate (21), the bottom surface of the upper sliding block (24) is in contact with the balls (224), and the lifting limiting frame (23) can limit the upper sliding block (24) to ascend or descend relative to the pushing frame (16); the relay plate (31) is contacted with one side of the upper sliding block (24) deviating from the lower inclined jacking block (22), and after the thrust force acts on the lower inclined jacking block (22), the thrust force can act on the relay plate (31) through the upper sliding block (24).

4. A mechanical press according to claim 3, wherein: the lower inclined top block (22) comprises an inclined sliding block (221), a lower stop block (222) and two lower limiting blocks (223), wherein the inclined sliding block (221) is slidably arranged on the bottom plate (21) and one end of the inclined sliding block (221) is in contact with the pushing frame (16), the lower stop block (222) is arranged in the middle of the top surface of the inclined sliding block (221) and extends along the length direction of the top surface of the inclined sliding block (221), the vertical distance between the top surface of the lower stop block (222) and the top surface of the inclined sliding block (221) and the bottom plate (21) is gradually reduced along the direction away from the pushing frame (16), and the balls (224) are movably embedded on the top surface of the lower stop block (222); the two lower limiting blocks (223) are arranged at one end of the top surface of the inclined sliding block (221) which is away from the pushing frame (16) and are fixed at two opposite sides of the lower stop block (222).

5. A mechanical press according to claim 3, wherein: the lifting limiting frame (23) comprises a vertical plate (231) and two cushion blocks (232), one end of the vertical plate (231) is arranged at one end of the bottom plate (21) deviating from the pushing frame (16), the vertical plate (231) extends towards the relay plate (31), and the two cushion blocks (232) are arranged at one end of the vertical plate (231) deviating from the bottom plate (21) and are arranged at intervals along the width direction of the vertical plate (231); one end of the upper sliding block (24) facing the vertical plate (231) is provided with a cam bearing follower (25), and a roller of the cam bearing follower (25) is positioned between the two cushion blocks (232) and is contacted with the two cushion blocks (232).

6. A mechanical press according to claim 3, wherein: an arc-shaped groove (312) is arranged in the middle of one surface of the relay board (31) facing the upper sliding block (24); the lower inclined jacking block (22) further comprises a supporting arc-surface column (26) and a supporting block (27), the supporting arc-surface column (26) is arranged in the middle of one side, away from the lower inclined jacking block (22), of the upper sliding block (24), the supporting arc-surface column (26) comprises an arc surface (261), and the arc surface (261) is limited in the arc-shaped groove (312); the support blocks (27) are arranged on the upper sliding block (24) and are positioned on two opposite sides of the support cambered surface column (26), and one side, deviating from the upper sliding block (24), of each support block (27) is in contact with the relay plate (31).

7. A mechanical press according to claim 1, wherein: the pushing frame (16) is provided with a pull-back groove (161) along the length direction of the screw rod (14); the pressing piece further comprises a screw rod sleeve (17) and a pull-back spring (18), one end of the screw rod sleeve (17) is located in the pull-back groove (161), the other end of the screw rod sleeve (17) movably penetrates through one end of the pushing frame (16) deviating from the large synchronous wheel (12) and then is connected with the force transmission part (2), and the pull-back spring (18) is located in the pull-back groove (161) and is sleeved on the screw rod sleeve (17).

8. A mechanical press according to claim 1, wherein: the output power of the gear motor (10) is 4.4kw, and the radius ratio of the small synchronous wheel (11) to the large synchronous wheel (12) is 1.00:2.33-2.50.

9. A mechanical press according to claim 2 or 8, characterized in that: a pressure sensor is arranged at the end part of one end of the pushing frame (16) contacted with the force transmission part (2), and the pressure sensor is contacted with the force transmission part (2); the pressure supply station (311) is provided with a positioning sensor (4), a moving-out sensor (5) is arranged outside the pressure supply station (311), and the positioning sensor (4) and the moving-out sensor (5) are both used for sensing the position of the pressure transmission column (32).

10. A mechanical press according to claim 3, wherein: the bottom plate (21) is a steel plate after quenching.