CN211637109U

CN211637109U - Precision roller coating device

Info

Publication number: CN211637109U
Application number: CN201922453220.0U
Authority: CN
Inventors: 冯纪; 李秀芳
Original assignee: Shenzhen Zhongbo United New Materials Co ltd
Current assignee: Shenzhen Zhongbo United New Materials Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-09
Anticipated expiration: 2029-12-30

Abstract

A precise roller coating device comprises a base, sliding blocks, rubber rollers, a coating mechanism, a first motor, a lifting part and an elastic part, wherein the base is provided with a conveyor belt, the base is symmetrically provided with mounting plates at two sides of the conveyor belt, the two mounting plates are respectively provided with a through groove, the sliding blocks are correspondingly arranged in the through grooves, the rubber rollers and the coating mechanism are horizontally arranged above the conveyor belt, two ends of each rubber roller are respectively and rotatably connected with the sliding blocks at two sides, the coating mechanism is fixedly connected with the sliding blocks, the rubber rollers and the coating mechanism move along with the sliding blocks, the coating mechanism is adjacent to the rubber rollers, the rubber rollers and the conveyor belt mutually form a feeding channel, the first motor is arranged at the bottom and is in driving connection with the rubber rollers to rotate the rubber rollers, the rubber rollers can conveniently coat plates on the feeding channel, the lifting part is arranged on the mounting plates, the second motor is arranged, the elastic piece is arranged between the lifting block and the sliding block.

Description

Precision roller coating device

Technical Field

The utility model relates to a panel processing technology field specifically is an accurate roller coating device.

Background

Roller coating is a common plate reprocessing method, and a coating is uniformly coated on the surface of a plate through the rotation of a rubber roller, so that the surface smoothness and partial performance of the plate are enhanced to a certain degree, but the rubber roller has certain hardness, and a certain thickness deviation exists in partial plates, so that when the thickness deviation of the roll-coated plate is large, the rubber roller is easily damaged, and therefore, a rubber roller supporting device is necessary to be designed, so that the rubber roller has enough pressure for completing roll coating, and the rubber roller supporting device can be ensured not to be damaged due to the thickness deviation of the plate.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a device is scribbled to accurate roller, the device can guarantee that the rubber roll can not lead to the damage because of the thickness deviation of panel itself when guaranteeing that the rubber roll has enough pressure of accomplishing the roller and scribbling.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a precise roller coating device comprises a base, sliders, a rubber roller, a coating mechanism, a first motor, a lifting part and an elastic part, wherein a conveyor belt is arranged on the base, mounting plates are symmetrically arranged on two sides of the conveyor belt on the base, through grooves are formed in the two mounting plates respectively, the sliders are correspondingly arranged in the through grooves and can slide up and down along the length direction of the through grooves, the rubber roller and the coating mechanism are horizontally arranged above the conveyor belt, two ends of the rubber roller are respectively and rotatably connected with the sliders on the two sides, two ends of the coating mechanism are respectively and fixedly connected with the sliders on the two sides, so that the rubber roller and the coating mechanism can move up and down along with the sliders, the coating mechanism is arranged adjacent to the rubber roller, the rubber roller and the conveyor belt are mutually matched to form a feeding channel, the first motor is arranged on the base and is in driving connection with the rubber, the lifting part is arranged on the mounting plate and comprises a lifting block, a first screw and a second motor, the lifting block can be arranged in a through groove in a sliding mode and can slide along with a sliding block in the same direction, the first screw is vertically and rotatably arranged on the mounting plate, a thread end of the first screw penetrates through the through groove and the sliding block in sequence, the first screw is finally in threaded connection with the lifting block, the sliding block can slide along the first screw, the first screw and the lifting block are arranged in one-to-one correspondence with the through groove, the second motor is arranged on the base and drives the two first screws to rotate synchronously through the screw rods, the horizontal height of the two lifting blocks is adjusted synchronously, the elastic part is arranged between the lifting block and the sliding block, when the rubber rollers are jacked up by uneven thickness of the plates, the pressure between the plates and the rubber rollers can be reduced, and meanwhile, the horizontal height of the feeding channel can be changed.

Preferably, the interior vertical slide bar that is equipped with of logical groove, logical groove bottom corresponds the slide bar and is equipped with and accomodates the groove, slide bar one end and mounting panel fixed connection, and the other end is arranged in and is accomodate the groove 141, and the slide bar is equipped with two at least to evenly distributed is in logical groove, slider and elevator all with slide bar sliding connection.

Preferably, the elastic part is a spring, and the spring is sleeved on the sliding rod; in a normal state, the spring deforms and stores energy to provide supporting force for the rubber roller; when the rubber roller is jacked up due to uneven thickness of the plate, the spring is reset to release energy to provide assistance for the plate, and the pressure between the plate and the rubber roller is reduced.

Preferably, the slide bar comprises a first bar and a second bar, the head end of the first bar is fixedly connected with the mounting plate, the tail end of the first bar is in threaded connection with the head end of the second bar, the tail end of the second bar is slidably arranged in the accommodating groove, and the second bar can be separated from the first bar by rotating and slide into the accommodating groove.

Preferably, the precise roller coating device further comprises a driving gear, a transmission gear, a driven gear, a rotating block and a tension spring, wherein the driving gear is fixedly connected with the output end of the first motor, the rotating block is arranged in parallel with the mounting plate, the first end of the rotating block is rotatably connected with the mounting plate, the transmission gear is rotatably arranged at the second end of the rotating block, one end of the tension spring is connected with the mounting plate, the other end of the tension spring is connected with the second end of the rotating block, the driven gear is coaxially arranged at one end of the rubber roller, and the driving gear, the transmission gear and the driven gear are located on the same plane and are connected through chain transmission, so that the first motor can synchronously drive the.

Preferably, this accurate roller coating device still includes jack-up mechanism, jack-up mechanism includes ejector pin, second screw rod and third motor, it is equipped with the sliding tray to lead to the groove bottom, and the vertical setting of second screw rod is in the sliding tray, and ejector pin slidable ground sets up in the sliding tray, is equipped with the screw hole with second screw rod threaded connection in the ejector pin, and the ejector pin runs through sliding tray and elevator in proper order, offsets with the slider, ejector pin, second screw rod and third motor all set up with the sliding tray one-to-one, the third motor sets up on the base to rotate through two second screw rods of lead screw synchronous drive, with two ejector pins of ordering about in step rise with the slider jack-up, make the slider keep away from the spring, the change of the spring of being convenient for.

(III) advantageous effects

The utility model has the advantages that: through set up the spring bottom the slider for the rubber roll possesses the ability of going up to slide when receiving panel extrusion, the spring can provide certain helping hand for panel, avoid the rubber roll because the extrusion of panel and damage, simultaneously in the elevator accessible lifting of spring bottom, make the height-adjustable of feed inlet, in order to adapt to the panel processing of different thickness, pressure when first motor is not the support mounting can reduce panel lifting rubber roll on the slider, the slide bar can be dismantled and the setting person of push rod changes and maintains the spring.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a first schematic view of the present invention;

FIG. 2 shows an enlarged view at A in FIG. 1;

fig. 3 is a first cross-sectional view of the present invention;

FIG. 4 shows an enlarged view at B in FIG. 3;

fig. 5 is a second cross-sectional view of the present invention;

FIG. 6 shows an enlarged view at C in FIG. 5;

FIG. 7 is a schematic view of the transmission relationship between the components of the present invention;

FIG. 8 is a second schematic view of the present invention;

in the figure: the automatic coating machine comprises a base 1, a conveyor belt 11, a mounting plate 12, a through groove 13, a sliding rod 14, a storage groove 141, a sliding groove 15, a first rod 16, a second rod 17, a sliding block 2, a rubber roller 3, a coating mechanism 4, a first motor 5, a lifting part 6, a lifting block 61, a first screw rod 62, a second motor 63, an elastic part 7, a driving gear 8, a transmission gear 81, a driven gear 82, a rotating block 83, a tension spring 84, a jacking mechanism 9, a push rod 90, a second screw rod 91 and a third motor 92.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-8, the utility model discloses a precise roller coating device, which comprises a base 1, a slide block 2, a rubber roller 3, a coating mechanism 4, a first motor 5, a lifting part 6 and an elastic part 7, wherein the base 1 is provided with a conveyor belt 11, the base 1 is symmetrically provided with mounting plates 12 at two sides of the conveyor belt 11, the two mounting plates 12 are respectively provided with a through groove 13, the slide block 2 is correspondingly arranged in the through groove 13 and can slide up and down along the length direction of the through groove 13, the rubber roller 3 and the coating mechanism 4 are horizontally arranged above the conveyor belt 11, two ends of the rubber roller 3 are respectively connected with the slide blocks 2 at two sides in a rotating way, two ends of the coating mechanism 4 are respectively fixedly connected with the slide blocks 2 at two sides, so that the rubber roller 3 and the coating mechanism 4 can move up and down along with the slide blocks 2, the coating mechanism 4 is arranged adjacent to the rubber roller 3, the rubber roller 3, and is connected with the rubber roller 3 in a driving way so as to drive the rubber roller 3 to rotate, so that the rubber roller 3 can conveniently paint the plate on the feeding channel, the lifting part 6 is arranged on the mounting plate 12, the lifting part 6 comprises a lifting block 61, a first screw 62 and a second motor 63, the lifting block 61 is slidably arranged in the through groove 13 and slides along the slide block 2, the first screw 62 is vertically and rotatably arranged on the mounting plate 12, the thread end of the first screw 62 sequentially penetrates through the through groove 13 and the slide block 2 and is finally in threaded connection with the lifting block 61, the slide block 2 can slide along the first screw 62, the first screw 62 and the lifting block 61 are respectively arranged corresponding to the through groove 13, the second motor 63 is arranged on the base 1 and drives the two first screws 62 to synchronously rotate through a screw rod so as to synchronously adjust the horizontal heights of the two lifting blocks 61, the elastic piece 7 is arranged between the lifting block 7 and the slide block 2, when the rubber roller is jacked by different thicknesses of the plate, the elastic part 7 can reduce the pressure between the plate and the rubber roller 3, and simultaneously, the horizontal height of the feeding channel can be changed by lifting the lifting block 61.

Specifically, during the use, place panel in conveyer belt 11 on, conveyer belt 11 is carried panel toward feedstock channel, and meanwhile, starts first motor 5 and drives rubber roll 3 and rotate, and loading attachment 4 scribbles coating on rubber roll 3, and when panel passed through feedstock channel, the coating on rubber roll 3 will evenly scribble on panel.

To sum up, the sliders 2 are symmetrically arranged at the two ends of the rubber roller 3, so that the two ends of the rubber roller 3 are stressed in a balanced manner, the rubber roller 3 is ensured to rotate horizontally, when a plate with uneven thickness passes through the feeding channel, the plate can jack the rubber roller 3 and drive the sliders 2 to move upwards, and the rubber roller 3 is prevented from being damaged due to overlarge pressure between the plate and the rubber roller 3; in an initial state, the slide block 2 extrudes and deforms the elastic part 7, and when the plate passes through the feeding channel and drives the slide block 2 to move upwards, the elastic part 7 provides certain assistance for the slide block 2 to move upwards, so that the pressure between the plate and the rubber roller 3 is further reduced; on the other hand, through rotating first screw 62, can order about elevator 61 to go up and down, and then drive slider 2 rebound to change feedstock channel's height, adapt to the panel of different thickness.

Therefore, the device can ensure that the rubber roller has enough pressure for finishing roll coating and can not be damaged due to the thickness deviation of the plate.

Further, a sliding rod 14 is vertically arranged in the through groove 13, a containing groove 141 is formed in the bottom of the through groove 13 corresponding to the sliding rod 14, one end of the sliding rod 14 is fixedly connected with the mounting plate 12, the other end of the sliding rod is arranged in the containing groove 141, the sliding rods 14 are at least provided with two sliding rods and are uniformly distributed in the through groove 13, so that the sliding block 2 and the lifting block 61 are stressed uniformly, the sliding block 2 and the lifting block 61 can be ensured to lift stably along the length direction of the sliding rod 14, and the sliding block 2 and the lifting block 61 are both in sliding connection with the sliding rod 14.

Furthermore, the elastic part 7 is a spring which is sleeved on the sliding rod 14; under a normal state, the slide block 2 applies pressure to the spring, and the spring deforms and stores energy to provide supporting force for the rubber roller 3; when the rubber roller 3 is jacked up due to uneven thickness of the plate, the spring is reset to release energy to provide assistance for the plate, and the pressure between the plate and the rubber roller 3 is reduced.

In conclusion, when the rubber roller 3 is jacked up by the plate due to the uneven thickness of the plate, the sliding block 2 rises along with the rubber roller 3, and the spring resets to release energy and provide assistance for the sliding block 2 to move upwards, so that the phenomenon that the pressure between the rubber roller 3 and the plate is too large is avoided.

Further, the sliding rod 14 includes a first rod 16 and a second rod 17, a head end of the first rod 16 is fixedly connected to the mounting plate 12, a tail end of the first rod 16 is connected to a head end of the second rod 17 through a screw, a tail end of the second rod 17 is slidably disposed in the receiving groove 141, and the second rod 17 can be disengaged from the first rod 16 by rotating and slide into the receiving groove 141.

Specifically, when the spring needs to be replaced periodically, the slider 2 is lifted upwards, the first rod 16 and the second rod 17 are unscrewed relatively, and the second rod 17 is placed in the accommodating groove 141, so that the spring can be taken out; similarly, after the new spring is sleeved on the first rod 16, the second rod is taken out from the accommodating groove 141 and screwed with the first rod 16.

Further, in the embodiment of the utility model, still include drive gear 8, drive gear 81, driven gear 82, turning block 83 and tension spring 84, drive gear 8 and first motor 5 output end fixed connection, turning block 83 and mounting panel 12 parallel arrangement, and the first end of turning block 83 rotates with mounting panel 12 and is connected, drive gear 81 rotationally sets up at the second end of turning block 83, tension spring 84 one end is connected with mounting panel 12, the other end is connected with the second end of turning block 83, driven gear 82 sets up the one end at rubber roll 3 coaxially, drive gear 8, drive gear 81 and driven gear 82 all are located the coplanar, and connect through chain drive, so that each gear of first motor 5 synchro-driven rotates.

To sum up, the first motor 5 is not directly installed on the sliding block 2, so that the pressure of the sheet material when the rubber roller 3 is lifted can be reduced, when the sheet material jacks up the rubber roller 3, the driven gear 82 rises along with the lifting of the rubber roller 3, the driven gear 82 pulls the transmission gear 83, the rotating block 83 rotates around the first end, so that the transmission gear 81 moves along with the lifting of the driven gear 82, at the moment, the tension spring 84 deforms to store energy and applies tension to the second end of the rotating block 83, so that the chain is kept tensioned, and the transmission stability between the gears is ensured; similarly, when the rubber roller 3 moves downwards, the transmission gear 81 moves along with the descending of the driven gear 82, so that the rotating block 83 rotates around the first end to the initial position, and the tension spring 84 is restored to the initial state. In particular, the tension spring 84 is always kept in tension with the turning block 83.

Further, in order to prolong the service life of elastic component 7, the utility model discloses an in the embodiment, still include jack-up mechanism 9, jack-up mechanism 9 includes ejector pin 90, second screw 91 and third motor 92, it is equipped with sliding tray 15 to lead to groove 13 bottom, the vertical setting of second screw 91 is in sliding tray 15, ejector pin 90 slidable ground sets up in sliding tray 15, be equipped with the screw hole with second screw 91 threaded connection in ejector pin 90, ejector pin 90 runs through sliding tray 15 and elevator 61 in proper order, offset with slider 2, ejector pin 90, second screw 91 and third motor 92 all set up with sliding tray 15 one-to-one, third motor 92 sets up on base 1, and rotate through two second screw 91 of lead screw synchronous drive, in order to about two ejector pins 90 to rise with slider 2 jack-up in step, make slider 2 keep away from the spring, the change of the spring of being convenient for.

Specifically, when the user does not need to use the device or use the device, the third motor 92 synchronously drives the two ejector rods 90 to ascend to jack up the sliding block 2, so that the sliding block 2 is far away from the spring; on the other hand, when the elastic part 7 needs to be replaced, namely the spring needs to be replaced, the design of the jacking mechanism 9 can replace a human hand to jack up and fix the sliding block 2, so that the spring can be replaced by a worker conveniently.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A precise roller coating device is characterized by comprising a base (1), a slide block (2), a rubber roller (3), a coating mechanism (4), a first motor (5), a lifting part (6) and an elastic part (7);

the conveyor belt (11) is arranged on the base (1), the mounting plates (12) are symmetrically arranged on the two sides of the conveyor belt (11) of the base (1), and the two mounting plates (12) are respectively provided with a through groove (13);

the sliding blocks (2) are correspondingly arranged in the through grooves (13) and can slide up and down along the length direction of the through grooves (13);

the rubber roller (3) and the coating mechanism (4) are horizontally arranged above the conveyor belt (11), two ends of the rubber roller (3) are respectively rotatably connected with the sliding blocks (2) on two sides, two ends of the coating mechanism (4) are respectively fixedly connected with the sliding blocks (2) on two sides, so that the rubber roller (3) and the coating mechanism (4) can move up and down along with the sliding blocks (2), the coating mechanism (4) is arranged adjacent to the rubber roller (3), and the rubber roller (3) and the conveyor belt (11) are matched with each other to form a feeding channel;

the first motor (5) is arranged on the base (1) and is in driving connection with the rubber roller (3) so as to drive the rubber roller (3) to rotate, and the rubber roller (3) is convenient to paint the plate on the feeding channel;

the lifting part (6) is arranged on the mounting plate (12), the lifting part (6) comprises a lifting block (61), a first screw rod (62) and a second motor (63), the lifting block (61) is slidably arranged in the through groove (13) and slides in the same direction as the sliding block (2), the first screw rod (62) is vertically and rotatably arranged on the mounting plate (12), the thread end of the first screw rod penetrates through the through groove (13) and the sliding block (2) in sequence and is finally in threaded connection with the lifting block (61), the sliding block (2) can slide along the first screw rod (62), the first screw rod (62) and the lifting block (61) are both arranged corresponding to the through groove (13), the second motor (63) is arranged on the base (1) and drives the two first screw rods (62) to synchronously rotate through the screw rods so as to synchronously adjust the horizontal heights of the two lifting blocks (61);

the elastic piece (7) is arranged between the lifting block (61) and the sliding block (2), when the rubber roller is jacked up by uneven thickness of the plate, the elastic piece (7) can reduce pressure between the plate and the rubber roller (3), and meanwhile, the horizontal height of the feeding channel can be changed by lifting the lifting block (61).

2. The precise roller coating device is characterized in that the through groove (13) is vertically provided with the sliding rod (14), the bottom of the through groove (13) is provided with a receiving groove (141) corresponding to the sliding rod (14), one end of the sliding rod (14) is fixedly connected with the mounting plate (12), the other end of the sliding rod (14) is arranged in the receiving groove (141), and at least two sliding rods (14) are uniformly distributed in the through groove (13);

the sliding block (2) and the lifting block (61) are both connected with the sliding rod (14) in a sliding manner.

3. The precision roll coating device according to claim 2, wherein the elastic member (7) is a spring, and the spring is sleeved on the sliding rod (14); in a normal state, the spring deformation energy storage provides a supporting force for the rubber roller (3); when the rubber roller (3) is jacked up due to uneven thickness of the plate, the spring resets and releases energy to provide assistance for the plate, and the pressure between the plate and the rubber roller (3) is reduced.

4. The precise roller coating device according to claim 3, wherein the sliding rod (14) comprises a first rod (16) and a second rod (17), the head end of the first rod (16) is fixedly connected with the mounting plate (12), the tail end of the first rod (16) is in threaded connection with the head end of the second rod (17), the tail end of the second rod (17) is slidably arranged in the accommodating groove (141), and the second rod (17) can be separated from the first rod (16) and slide into the accommodating groove (141) by rotating.

5. The precision roll coating device according to claim 1, further comprising a driving gear (8), a transmission gear (81), a driven gear (82), a rotating block (83) and a tension spring (84);

the driving gear (8) is fixedly connected with the output end of the first motor (5), the rotating block (83) is arranged in parallel with the mounting plate (12), the first end of the rotating block (83) is rotatably connected with the mounting plate (12), the transmission gear (81) is rotatably arranged at the second end of the rotating block (83), one end of the tension spring (84) is connected with the mounting plate (12), the other end of the tension spring is connected with the second end of the rotating block (83), and the driven gear (82) is coaxially arranged at one end of the rubber roller (3);

the driving gear (8), the transmission gear (81) and the driven gear (82) are located on the same plane and are in transmission connection through chains, so that the first motor (5) can synchronously drive the gears to rotate.

6. The precision roll coating device according to claim 1, further comprising a jacking mechanism (9), wherein the jacking mechanism (9) comprises a push rod (90), a second screw (91) and a third motor (92);

the bottom of the through groove (13) is provided with a sliding groove (15), the second screw rod (91) is vertically arranged in the sliding groove (15), the ejector rod (90) is slidably arranged in the sliding groove (15), a threaded hole in threaded connection with the second screw rod (91) is formed in the ejector rod (90), and the ejector rod (90) sequentially penetrates through the sliding groove (15) and the lifting block (61) and abuts against the sliding block (2);

the ejector rods (90), the second screw rods (91) and the third motors (92) are arranged in one-to-one correspondence with the sliding grooves (15);

the third motor (92) is arranged on the base (1) and synchronously drives the two second screw rods (91) to rotate through the screw rod, so that the two ejector rods (90) are synchronously driven to ascend to jack up the sliding block (2), the sliding block (2) is far away from the spring, and the spring is convenient to replace.