阅读说明：本技术 一种可快速提升的挤压装置、提升方法及应用 (Extrusion device capable of being quickly lifted, lifting method and application ) 是由 徐文韬 韩秀洁 于蓓 李锡文 常广义 王雪杨 贾媛媛 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种可快速提升的挤压装置、提升方法及应用,所述挤压装置包括：第一升降机构、第二升降机构、压盘和用于支撑以上部件的支撑机构；其中,第二升降机构与压盘连接,用于驱动压盘上升或下降；第一升降机构与第二升降机构连接,用于驱动第二升降机构和压盘同时上升或下降。本发明通过支撑机构、由第一升降机构和第二升降机构构成的两级升降机构、定位机构的配合实现压盘的慢速挤压和快速提升,解决了混合锅挤压浇注机构中的压盘上升下降速度不能调节的问题,节省了无效工作时间,优化了生产节拍,提高了生产效率。(The invention discloses an extrusion device capable of being quickly lifted, a lifting method and application, wherein the extrusion device comprises: the device comprises a first lifting mechanism, a second lifting mechanism, a pressure plate and a supporting mechanism for supporting the above components; the second lifting mechanism is connected with the pressure plate and used for driving the pressure plate to ascend or descend; the first lifting mechanism is connected with the second lifting mechanism and used for driving the second lifting mechanism and the pressing plate to ascend or descend simultaneously. According to the invention, the slow extrusion and the fast lifting of the pressure plate are realized through the matching of the supporting mechanism, the two-stage lifting mechanism consisting of the first lifting mechanism and the second lifting mechanism and the positioning mechanism, the problem that the ascending and descending speed of the pressure plate in the extrusion casting mechanism of the mixing pot cannot be adjusted is solved, the invalid working time is saved, the production beat is optimized, and the production efficiency is improved.)

1. A fast liftable press device, comprising: the device comprises a first lifting mechanism, a second lifting mechanism, a pressure plate (31) and a supporting mechanism for supporting the above components;

the second lifting mechanism is connected with the pressure plate (31) and is used for driving the pressure plate (31) to ascend or descend; the first lifting mechanism is connected with the second lifting mechanism and used for driving the second lifting mechanism and the pressure plate (31) to ascend or descend simultaneously.

2. A press device according to claim 1, wherein the support means comprises a base (21), at least two uprights (22) attached to the base (21), a rectangular frame (25) connected to the tops of the uprights (22);

wherein a track (33) is arranged on the upright post (22) along the length direction of the upright post (22), and the second lifting mechanism moves along the track (33); the first lifting mechanism is erected on the rectangular frame (25).

3. The press according to claim 2, wherein the second elevating mechanism comprises a bearing plate (24), at least one second driver (36) fixed on the bearing plate (24), a press screw (32) connected with the second driver (36), a positioning pin (42) vertically connected to the bottom of the bearing plate (24), a guide post (35) penetrating the bearing plate (24) and having one end fixedly connected with the press plate (31);

set up on the lateral wall of loading board (24) with slider matched with recess on track (33), the one end and pressure disk (31) fixed connection of extrusion lead screw (32), second driver (36) on the loading board (24) are passed to the other end, through second driver (36) rotate extrusion lead screw (32) and make it make and be close to or keep away from the removal of loading board (24) to drive pressure disk (31) and rise or descend.

4. A press device as claimed in claim 3, characterised in that it further comprises a locating means fixed to the upright (22) and comprising a further locating pin (41), the side wall of the carrier plate (24) being provided with a corresponding pin hole, the carrier plate (24) being fixed in a predetermined position by engagement between the locating pin and the pin hole.

5. Extrusion apparatus as in claim 4, wherein the positioning means further comprises a pin holder (44), a pusher (43), a pin connection plate (45);

the positioning pin shaft (41) penetrates through the pin shaft fixing seat (44) to be connected with the pin shaft connecting plate (45), one end of the pusher (43) is connected with the pin shaft fixing seat (44), and the other end of the pusher is connected with the pin shaft connecting plate (45); the pusher (43) drives the pin shaft connecting plate (45) to move, so that the positioning pin shaft (41) is driven to extend out or retract into the pin shaft fixing seat (44); preferably, the pusher (43) is a pneumatic cylinder.

6. Extrusion apparatus according to claim 3, wherein the first lifting mechanism comprises a first actuator (38) and a lifting screw (37) mounted on the rectangular frame (25);

the bearing plate (24) is fixedly connected with the rectangular frame connecting portion (20), one end of the lifting lead screw (37) penetrates through a threaded hole in the bearing plate (24) and then is connected with the rectangular frame connecting portion (20), the other end of the lifting lead screw is connected with the first driver (38), and the lifting lead screw (37) is driven to rotate through the first driver (38), so that the bearing plate (24) moves along the length direction of the lifting lead screw (37).

7. A press device according to claim 3, characterised in that the second drive (36) is a servomotor and that the second drives (36) are two and are arranged symmetrically on the carrier plate (24).

8. Extrusion apparatus according to claim 6, wherein the first drive (38) is a three-phase asynchronous motor.

9. A method of rapidly lifting a press device as claimed in any one of claims 1 to 8, wherein the first drive of the first lifting mechanism is driven at a speed greater than the second drive of the second lifting mechanism.

10. Use of an extrusion device according to any of claims 1-8 for extrusion casting of solid rocket propellants.

Technical Field

The invention belongs to the technical field of mechanical extrusion, and particularly relates to an extrusion device capable of being quickly lifted, a lifting method and application.

Background

The preparation of solid rocket propellant needs to pass through multiple processes, extrusion casting is the key process among them, and the medicine thick liquid need transport the mixing pot to extrusion casting workshop after accomplishing the mixture, pushes down through the pressure disk in the extrusion device, extrudees the medicine thick liquid to the pouring jar in from the mixing pot, and after the extrusion is accomplished, the pressure disk rises, and the mixing pot is transported to next workshop, and extrusion casting device waits that the next mixing pot transports the medicine thick liquid and gets into.

The lifting process of the pressure plate in the existing extrusion device mainly adopts a motor to drive an extrusion mechanism to lift, and the lifting process is one-stage lifting, but the descending speed of the pressure plate is required to be slow and stable because the slurry is a high-viscosity material, and the ascending speed of the pressure plate is not particularly required. The existing extrusion device has the advantages of synchronous rising speed and falling speed, single speed adjustment, serious increase of ineffective time of single production due to long rising time, reduction of production efficiency and influence on production rhythm.

Therefore, according to the lift characteristics of mixing pot extrusion device, based on the process requirement of nimble regulation rising and falling speed, it is the difficult problem that awaits solution in the relevant industrial application to design a can promote extrusion device fast, and is long when adjusting production in a flexible way, improves production efficiency, optimizes the production beat and has the significance.

Disclosure of Invention

Aiming at the defects or improvement requirements of the prior art, the invention provides an extrusion device capable of being quickly lifted, a lifting method and application, and aims to realize slow extrusion and quick lifting of a pressure plate through the matching of a supporting mechanism, a two-stage lifting mechanism consisting of a first lifting mechanism and a second lifting mechanism and a positioning mechanism, solve the problem that the ascending and descending speed of the pressure plate in a mixing pot extrusion pouring mechanism cannot be adjusted, save invalid working time, optimize production takt and improve production efficiency.

To achieve the above object, according to one aspect of the present invention, there is provided a fast-liftable press apparatus including: the device comprises a first lifting mechanism, a second lifting mechanism, a pressure plate and a supporting mechanism for supporting the above components; the second lifting mechanism is connected with the pressure plate and used for driving the pressure plate to ascend or descend; the first lifting mechanism is connected with the second lifting mechanism and used for driving the second lifting mechanism and the pressing plate to ascend or descend simultaneously.

Preferably, the supporting mechanism comprises a base, at least two upright posts fixedly connected to the base, and a rectangular frame connected with the tops of the upright posts; a rail is arranged on the upright column along the length direction of the upright column, and the second lifting mechanism moves along the rail; the first lifting mechanism is erected on the rectangular frame.

Preferably, the second lifting mechanism comprises a bearing plate, at least one second driver fixed on the bearing plate, an extrusion screw connected with the second driver, a positioning pin shaft vertically connected to the bottom of the bearing plate, and a guide post penetrating through the bearing plate and having one end fixedly connected with the pressure plate;

the lateral wall of the bearing plate is provided with a groove matched with the sliding block on the track, one end of the extrusion screw rod is fixedly connected with the pressure plate, the other end of the extrusion screw rod penetrates through a second driver on the bearing plate, and the extrusion screw rod is rotated by the second driver to move close to or away from the bearing plate, so that the pressure plate is driven to ascend or descend.

Preferably, the extrusion device further comprises a positioning mechanism, the positioning mechanism is fixed on the stand column, the positioning mechanism comprises another positioning pin shaft, the side wall of the bearing plate is provided with a corresponding pin hole, and the bearing plate is fixed at a preset position through the matching between the positioning pin shaft and the pin hole.

Preferably, the positioning mechanism further comprises a pin shaft fixing seat, a pusher and a pin shaft connecting plate;

the positioning pin shaft penetrates through the pin shaft fixing seat to be connected with the pin shaft connecting plate, one end of the pusher is connected with the pin shaft fixing seat, and the other end of the pusher is connected with the pin shaft connecting plate; the pusher drives the pin shaft connecting plate to move, so that the positioning pin shaft is driven to extend out of or retract into the pin shaft fixing seat; preferably, the pusher is a pneumatic cylinder.

Preferably, the first lifting mechanism comprises a first driver and a lifting screw rod which are erected on the rectangular frame;

the bearing plate is fixedly connected with the rectangular frame connecting portion, one end of the lifting screw penetrates through a threaded hole in the bearing plate and then is connected with the rectangular frame connecting portion, the other end of the lifting screw is connected with the first driver, and the lifting screw is driven by the first driver to rotate, so that the bearing plate moves along the length direction of the lifting screw.

Preferably, the second driver is a servo motor, and the number of the second drivers is two, and the two second drivers are symmetrically arranged on the bearing plate.

Preferably, the first drive is a three-phase asynchronous motor.

According to another aspect of the present invention, there is provided a fast lifting method of a press apparatus, in which a driving speed of a first driver of a first lifting mechanism is greater than a driving speed of a second driver of a second lifting mechanism.

According to a further aspect of the invention, there is provided the use of an extrusion apparatus for extrusion casting of solid rocket propellants.

In general, at least the following advantages can be obtained by the above technical solution contemplated by the present invention compared to the prior art.

(1) The extrusion device utilizes the second lifting mechanism to drive the pressure plate to descend so as to extrude high-viscosity medicine slurry from the bottom of the mixing pot, and utilizes the first lifting mechanism to drive the second lifting mechanism and the pressure plate to simultaneously ascend so as to lift the pressure plate. The invention adopts two lifting mechanisms, so that the pressure plate can ascend and descend at different speeds, namely the extrusion plate can descend at a slow speed and ascend at a fast speed. The lifting speed separation of the pressure plate is realized by utilizing the two lifting mechanisms, the lifting speed of the extrusion speed complete device of the pressure plate is independently controlled, the defects of long invalid working time and single control mode of the existing equipment are overcome, and the production efficiency and the automation level of the equipment are improved.

(2) The device capable of quickly lifting provided by the invention can realize the positioning of the bearing plate by utilizing the positioning mechanism, simultaneously bear the reaction force of extrusion in the extrusion process, and the positioning mechanism is convenient to overhaul and replace because the positioning mechanism is installed and fixed on the upright post, so that the field working condition is more stable and firm.

Drawings

Fig. 1 is a schematic view of an overall structure of a device capable of rapidly lifting and pressing according to an embodiment of the present invention;

FIG. 2 is a schematic view of an internal positioning mechanism of a side support platform of the fast-lifting extrusion apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a portion of a slowly lowered and positioned extrusion device capable of being lifted quickly according to an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of a fast-lifting and squeezing device according to an embodiment of the present invention after the device is lifted to a desired position;

fig. 5 is a schematic diagram of a back structure of a carrier plate capable of rapidly lifting a pressing device according to an embodiment of the present invention.

The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:

20-rectangular frame connecting part, 21-base, 22-upright post, 23-side supporting table, 24-bearing plate, 25-rectangular frame, 31-pressure plate, 32-extrusion screw, 33-track, 34-linear bearing, 35-guide post, 36-second driver, 37-lifting screw, 38-first driver, 41-positioning pin shaft of positioning mechanism, 42-positioning pin shaft at the bottom of bearing plate, 43-pusher, 44-pin shaft fixing seat and 45-pin shaft connecting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

An embodiment of the present invention provides a fast-lifting pressing apparatus, referring to fig. 1 to 4, including: a first lifting mechanism, a second lifting mechanism, a pressure plate 31 and a supporting mechanism for supporting the above components; the second lifting mechanism is connected with the pressure plate 31 and used for driving the pressure plate 31 to ascend or descend; the first lifting mechanism is connected with the second lifting mechanism and used for driving the second lifting mechanism and the pressure plate 31 to ascend or descend simultaneously.

The supporting mechanism comprises a base 21, at least two upright posts 22 fixedly connected on the base 21 and a rectangular frame 25 connected with the tops of the upright posts 22; a rail 33 is arranged on the upright post 22 along the length direction of the upright post 22, and the second lifting mechanism moves along the rail 33; the first lifting mechanism is erected on the rectangular frame 25.

The second lifting mechanism comprises a bearing plate 24, at least one second driver 36 fixed on the bearing plate 24, an extrusion screw 32 connected with the second driver 36, a positioning pin 42 vertically connected to the bottom of the bearing plate 24, and a guide column 35 penetrating through the bearing plate 24 and having one end fixedly connected with the pressure plate 31; the side wall of the bearing plate 24 is provided with a groove matched with the sliding block on the rail 33, one end of the extrusion screw 32 is fixedly connected with the pressure plate 31, the other end of the extrusion screw passes through the second driver 36 on the bearing plate 24, and the extrusion screw 32 is rotated by the second driver 36 to move close to or far away from the bearing plate 24, so that the pressure plate 31 is driven to ascend or descend.

The positioning pin 42 vertically connected to the bottom of the bearing plate 24 can move up and down along with the bearing plate 24, and is inserted into a corresponding pin hole of the material container below the pressure plate 31 to perform secondary positioning and fixing. The guide post 35 penetrates through the linear bearing 34 to be connected with the pressure plate, the guide post 35 achieves a guiding effect in the extrusion process, and meanwhile, the support of the integral structure of the second lifting mechanism is also enhanced. It should be noted that, referring to fig. 5, the bottom surface of the bearing plate 24 is a frame-type rib plate structure, which has good supporting strength and high bearing capacity.

The extrusion device further comprises a positioning mechanism, the positioning mechanism is fixed on the stand column 22, the positioning mechanism comprises another positioning pin 41, the side wall of the bearing plate 24 is provided with a corresponding pin hole, and the bearing plate 24 is fixed at a preset position through the matching between the positioning pin and the pin hole.

The positioning mechanism further comprises a pin shaft fixing seat 44, a pusher 43 and a pin shaft connecting plate 45; the positioning pin shaft 41 penetrates through the pin shaft fixing seat 44 to be connected with the pin shaft connecting plate 45, one end of the pusher 43 is connected with the pin shaft fixing seat 44, and the other end of the pusher is connected with the pin shaft connecting plate 45; the pusher 43 drives the pin connecting plate 45 to move, so as to drive the positioning pin 41 to extend out of or retract into the pin fixing seat 44; preferably, the pusher 43 is a pneumatic cylinder.

In this embodiment, stand 22 is 4, and two are a set of symmetry setting, and track 33 sets up the collateral branch brace platform from the length direction downwardly extending of the top of stand along the stand of stand two between the stand with one side, and positioning mechanism can set up in this collateral branch brace platform, conveniently overhauls the change.

The first lifting mechanism comprises a first driver 38 and a lifting screw 37 which are erected on the rectangular frame 25; the bearing plate 24 is fixedly connected with the rectangular frame connecting portion 20, one end of the lifting screw 37 penetrates through a threaded hole in the bearing plate 24 and then is connected with the rectangular frame connecting portion 20, the other end of the lifting screw is connected with the first driver 38, and the lifting screw 37 is driven to rotate through the first driver 38, so that the bearing plate 24 moves along the length direction of the lifting screw 37.

The second drivers 36 are servo motors, and the number of the second drivers 36 is two, and the two second drivers are symmetrically arranged on the bearing plate 24. The first drive 38 is a three-phase asynchronous motor.

As an example, the diameter x lead of the extrusion screw in the present invention is: tr40x20 mm. The single lead screw can actually bear 540KN of load. The diameter x lead of the lifting lead screw is as follows: tr50x8 mm. The single lead screw can actually bear 60KN of load. The reduction ratio of the worm gear in the second driver is 1: 40, rotating a rotating lead screw by the worm to form a diameter of 0.5 mm; when the input rotation speed of the motor is 1400rpm, the speed of the extrusion screw is 0.237 mm/s. It will be understood by those skilled in the art that the parameters of the lead screw and the parameters of the motor may be adaptively adjusted according to actual conditions.

The working mode of the extrusion device capable of being quickly lifted provided in the embodiment is specifically as follows: first, the first driver 38 is controlled to drive the lifting screw 37 to lower the bearing plate 24 to a predetermined position, and the positioning pin 42 at the bottom of the bearing plate is inserted into the material container. Then, the control pusher 43 controls the positioning pin 41 of the positioning mechanism to extend into the positioning pin hole on the side surface of the carrier plate 24, so as to fix the position of the second driver 36. On the basis, the second driver 36 is started to drive the extrusion screw 32 to extend, and the extending length of the extrusion screw 32 is controlled, so that the pressure plate 31 is pressed down to a preset position, and slow pressing is completed. After the high-viscosity material is extruded from the container after the pressing is finished, the second driver 36 is kept stable and still, the pusher 43 is controlled to drive the positioning pin shaft to retract, then the first driver 38 is controlled to drive the lifting screw 37, the bearing plate 24 is driven to quickly rise to the preset position, and meanwhile the positioning pin shaft 42 at the bottom of the bearing plate is pulled out of the material container, so that the quick rising of the pressure plate 31 is realized. In the process of transferring the high-viscosity material container, the second driver 36 can be controlled to drive the extrusion screw 32 to retract, and the next extrusion process is waited for.

Another embodiment of the present invention provides a method for rapidly lifting an extrusion apparatus, in which a driving speed of a first driver of a first lifting mechanism is greater than a driving speed of a second driver of a second lifting mechanism.

In yet another embodiment, the invention provides the use of an extrusion apparatus for extrusion casting of a solid rocket propellant.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.