CN210260195U

CN210260195U - Online defoaming drawer type sliding feeding device

Info

Publication number: CN210260195U
Application number: CN201920440415.9U
Authority: CN
Inventors: 高军鹏
Original assignee: Shenzhen Etmade Automatic Equipment Co Ltd
Current assignee: Shenzhen Etmade Automatic Equipment Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-04-07
Anticipated expiration: 2029-04-03

Abstract

The utility model discloses an online defoaming drawer type sliding feeding device, which comprises a fixed plate, a sliding plate, a defoaming driving part and a defoaming supporting and sealing part, wherein the fixed plate is horizontally fixed in a defoaming space of a defoaming box; the sliding plate is arranged above the fixed plate; the defoaming driving part is arranged on the fixed plate so as to drive the sliding plate to slide linearly; the defoaming supports seal assembly and sets up on the fixed plate, and defoaming supports seal assembly and passes through rotary motion in order to adjust the support height for the gliding board upwards jacking supports the gliding board when removing to the defoaming incasement. The utility model discloses utilize the straight line to slide and send into or send out the defoaming case with multi-disc glass piece, make the sand grip upwards support and jack-up slide plate through the rotation of axis of rotation, make the upwards unsettled locking of slide plate, and make the sealing washer of slide plate and the tight contact of sealing ring subsides of deaeration space roof, form airtight deaeration environment.

Description

Online defoaming drawer type sliding feeding device

Technical Field

The utility model relates to an automated manufacturing field indicates an online deaeration drawer type material feeding unit that slides very much.

Background

Electronic product production processes such as smart mobile phone, intelligent bracelet make the pad pasting that relates to and screen one important process is the pad pasting of glass piece and subsequent sequence is supplementary, and the bubble of glass piece is eliminated after the pad pasting, and its effect lies in utilizing external force to extrude the remaining bubble between glass piece after will laminating and the laminating of membrane material to promote laminating screen quality. The traditional screen bubble elimination process comprises a plurality of modes such as physical extrusion or vacuum deaeration, wherein the physical extrusion is to press a film material through an external force to extrude bubbles between the film material and a screen, and the vacuum deaeration is to form a vacuum environment outside a glass sheet to ensure that the air pressure inside the bubbles is greater than the external air pressure and the air inside the bubbles is directly led out to achieve the purpose of eliminating the bubbles; the two defoaming processes have advantages and disadvantages respectively, and have certain market share in China. At present, the existing defoaming process has the following technical bottlenecks to break through: in the defoaming process, the problems of the stopping, supporting and defoaming closed space of the glass sheet bearing component (such as a sliding plate) are solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, a through slide plate as glass piece bearing member is provided, utilize the straight line to slide and send into or send out the defoaming case with multi-disc glass piece, the rotatory sand grip that makes progress support and jack-up slide plate of axis of rotation through defoaming support seal part, make the unsettled locking that makes progress of slide plate, and make the sealing washer of slide plate and the tight contact of sealing ring subsides of deaeration space roof, form the online deaeration drawer type material feeding unit that slides of airtight deaeration environment.

The utility model adopts the following technical scheme: an online defoaming drawer type sliding feeding device is used for intensively feeding glass sheets to be defoamed into a defoaming box and pushing the defoamed glass sheets out of the defoaming box to assist blanking, and comprises a fixed plate, a sliding plate, a defoaming driving part and a defoaming supporting and sealing part, wherein the fixed plate is horizontally fixed in a defoaming space of the defoaming box; the sliding plate is arranged above the fixed plate and can freely slide above the fixed plate; the defoaming driving part is arranged on the fixed plate, and the output end of the defoaming driving part is connected with the sliding plate so as to drive the sliding plate to slide linearly; the defoaming supporting sealing component is arranged on the fixing plate and is used for adjusting the supporting height through rotating motion, so that the sliding plate is upwards jacked to support the sliding plate when moving into the defoaming box, the sliding plate is made to rise and is tightly attached to the sealing ring of the top wall of the defoaming space in the defoaming box, a closed space is formed, hot air in the closed space is led into the defoaming box to generate air pressure, and bubbles between the glass sheets and the diaphragm are extruded out.

Preferably, the left side and the right side of the fixing plate are respectively provided with a first slide rail and a first branch bar, and the first slide rail is slidably provided with a slide block; the first slide rail and the first supporting strip respectively extend forwards to form a fixed plate.

Preferably, the sliding plate is horizontally arranged above the fixed plate, the bottom of the left side of the sliding plate is fixedly connected with the sliding block, at least two rollers are arranged at the bottom of the right side of the sliding plate at intervals along the projection direction of the first supporting strip, and the sliding plate linearly slides back and forth between the fixed plate and the front side of the fixed plate through the rollers and the sliding block.

Preferably, a material groove which is sunken downwards is arranged on the sliding plate, at least two material suction parts are arranged in the material groove, and the glass sheet to be defoamed is placed at the material suction parts and is adsorbed and fixed downwards; the periphery of above-mentioned silo is equipped with the seal groove, and the embedded sealing washer that establishes of seal groove, the upper portion of sealing washer extend to the seal groove top, and when the slide block removed to the deaeration space in, the seal groove corresponded the setting from top to bottom with the sealing ring of deaeration space roof.

Preferably, the defoaming driving part comprises a motor, a screw rod and a screw rod sleeve, wherein the motor is arranged at the lower part of the rear side of the fixing plate, the output end of the motor is arranged towards the rear side, and a first driving wheel is arranged at the output end of the motor; the screw rod is arranged on the fixed plate along the front-back direction, and two ends of the screw rod are rotatably connected to the fixed plate through bearing seats; a second driving wheel is arranged at the rear end part of the screw rod, a driving belt is sleeved between the second driving wheel and the first driving wheel, and the motor drives the screw rod to rotate through the driving belt; the screw rod sleeve is sleeved on the screw rod, the screw rod sleeve is fixedly connected with the bottom of the sliding plate, and the sliding plate is driven to slide linearly through the screw rod sleeve when the screw rod rotates.

Preferably, the debubbling support sealing member includes a support cylinder, a push rod, a swing rod, a connecting rod and a rotating shaft, wherein the support cylinder is disposed at the rear side of the fixing plate, and the output end is disposed along the left-right direction; the push rod is connected to the output end of the supporting cylinder; the swing rod is arranged along the front-back direction and is connected with the push rod; the rotating shafts comprise at least two rotating shafts, the rotating shafts are arranged on the fixing plate in parallel at intervals, and the front end and the rear end of each rotating shaft are rotatably connected with the fixing plate through bearing seats; the two ends of the connecting rod are respectively and rotatably connected with the oscillating bar and the rear end of the rotating shaft; the supporting cylinder drives the swing rod to swing back and forth through the push rod, and the swing rod drives the rotating shaft to rotate back and forth through the connecting rod.

Preferably, the rotating shaft is provided with a convex strip, the strip is arranged on the outer wall of the rotating shaft along the front-back direction and extends outwards along the radial direction of the rotating shaft, and the outer wall of the convex strip is provided with a supporting plane; when the sliding plate slides to the defoaming space, the rotating shaft rotates to enable the raised line to abut against the bottom of the sliding plate and lift the sliding plate upwards so as to support the sliding plate, and the sealing ring on the sliding plate is in contact with the sealing ring on the top wall of the defoaming space to form a closed defoaming environment.

The beneficial effects of the utility model reside in that:

the utility model discloses defect and not enough autonomic research and development to prior art existence have designed one kind and have born the weight of the part through the slide plate as the glass piece, utilize the straight line to slide and send into multi-disc glass piece or see off the defoaming case, the rotatory sand grip that makes progress support and jack-up slide plate of axis of rotation through the defoaming support seal part, make the upwards unsettled locking of slide plate, and make the sealing washer of slide plate and the tight contact of sealing ring subsides of deaeration space roof, form the online deaeration drawer type material feeding unit that slides of airtight deaeration environment. The utility model discloses a fixed plate and slide plate, wherein, the fixed plate is fixed to be set up in the deaeration space, and slide plate slidable ground sets up in the fixed plate top to freely slide in the fixed plate top, so that make a round trip to slide around deaeration space and the space that slides between. Furthermore, the utility model is provided with a defoaming driving component and a defoaming sealing support component on the fixing plate, the defoaming driving component drives the screw rod to rotate through the motor, and the sliding plate is pushed to slide back and forth in the defoaming space and the sliding space; meanwhile, the utility model discloses a deaeration support seal assembly sets up between fixed plate and slide block, and four axis of rotation of deaeration support seal assembly set up on the fixed plate parallelly at intervals, and the axis of rotation sets up towards the fore-and-aft direction, and both ends are connected with the fixed plate rotationally through the bearing, and the rear end of each axis of rotation is connected with a pendulum rod through the connecting rod, and the pendulum rod sets up along the left and right direction, and the connecting rod both ends are connected with axis of rotation and pendulum rod rotationally respectively; the supporting cylinder of the deaeration supporting sealing component is arranged at the rear side of the fixed plate, the left end part of the supporting cylinder is rotatably connected with the fixed plate, the output end of the supporting cylinder is arranged towards the right side, the output end of the supporting cylinder is connected with a push rod, the outer end of the push rod is rotatably connected with a swing rod, and when the supporting cylinder drives the push rod to linearly move along the left-right direction, the push rod drives four rotating shafts to rotate back and forth through the swing rod and four connecting rods; the utility model discloses be equipped with one on the lateral wall of axis of rotation along the outside bellied sand grip of axis of rotation radial direction, the radial radius of sand grip is greater than the radial radius of axis of rotation lateral wall, consequently at the rotatory in-process of axis of rotation, the sand grip is along with the axis of rotation is rotatory when sliding plate below, the sand grip upwards supports the bottom of sliding plate, so that provide the ascending holding power of sliding plate, the sand grip is rotatory when just being the sliding plate position simultaneously, with the sliding plate ascending difference between jacking sand grip radial radius and the axis of rotation radial radius, make the sliding plate ascending lifting in vertical direction. The utility model is provided with a material groove which is sunken downwards, and 12 material suction parts are arranged in the material groove, and can simultaneously store and adsorb and fix 12 glass sheets to be defoamed; a sealing groove is formed in the periphery of the trough, and a rubber sealing ring can be embedded in the sealing groove; when the sliding plate is filled with glass sheets in the sliding space of the frame body, the sliding plate slides backwards to the defoaming space of the box body, the rotating shaft rotates to enable the convex strips to support and jack the sliding plate, so that the rubber sealing rings in the sliding plate sealing rings and the sealing rings arranged on the top wall of the defoaming space are tightly attached and sealed with each other, a closed space is formed outside the glass sheets in the material groove, hot air introduced into the closed space by the air inlet pipe heats the defoaming temperature to 50 ℃, and when the air pressure in the closed space is continuously increased to 0.5 MPa along with continuous introduction of the hot air, the air in the air bubbles is extruded out from between the film material and the glass sheets under the conditions of heating and air pressure extrusion.

Drawings

Fig. 1 is one of the schematic three-dimensional structures of the sliding feeding assembly of the present invention.

Fig. 2 is a schematic diagram showing a second three-dimensional structure of the sliding feeding assembly of the present invention.

Fig. 3 is a schematic perspective view of the defoaming sealing support member according to the present invention.

Fig. 4 is a second schematic perspective view of the defoaming sealing support device of the present invention.

Fig. 5 is an enlarged schematic view of the structure at the point I in fig. 3.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 to 5, the technical solution adopted by the present invention is as follows: an online defoaming drawer type sliding feeding device is used for intensively feeding glass sheets to be defoamed into a defoaming box and pushing the defoamed glass sheets out of the defoaming box to assist blanking, and comprises a fixed plate 41, a sliding plate 42, a defoaming driving part and a defoaming supporting and sealing part, wherein the fixed plate 41 is horizontally fixed in a defoaming space of the defoaming box; the sliding plate 42 is arranged above the fixed plate 41 and can slide freely above the fixed plate 41; the defoaming driving component is arranged on the fixed plate, and the output end of the defoaming driving component is connected with the sliding plate 42 so as to drive the sliding plate 42 to linearly slide; the defoaming supporting sealing component is arranged on the fixed plate 41, and the defoaming supporting sealing component adjusts the supporting height through rotating motion, so that the sliding plate 42 is upwards jacked and supported when moving into the defoaming box, and the sliding plate 42 is lifted to be tightly attached to a sealing ring on the top wall of a defoaming space in the defoaming box, so that a closed space is formed, hot air introduced into the closed space by the defoaming box generates air pressure, and bubbles between glass sheets and membranes are extruded out.

The left side and the right side of the fixed plate 41 are respectively provided with a first slide rail 43 and a first branch bar, and the first slide rail 43 is slidably provided with a slide block; the first slide rail 43 and the first supporting bar extend forward to form the fixing plate 41.

The sliding plate 42 is horizontally arranged above the fixed plate 41, the bottom of the left side of the sliding plate 42 is fixedly connected with the sliding block, at least two rollers 44 are arranged at the bottom of the right side of the sliding plate 42 at intervals along the projection direction of the first supporting bar, and the sliding plate 42 linearly slides back and forth between the fixed plate 41 and the front side of the fixed plate 41 through the rollers 44 and the sliding block.

A material groove which is sunken downwards is arranged on the sliding plate 42, at least two material suction parts 413 are arranged in the material groove, and the glass sheet to be defoamed is placed at the material suction parts 413 and is adsorbed and fixed downwards; the periphery of the trough is provided with a sealing groove 415, a sealing ring is embedded in the sealing groove 415, the upper part of the sealing ring extends to the upper part of the sealing groove 415, and when the sliding plate 42 moves into the defoaming space, the sealing groove 415 and the sealing ring on the top wall of the defoaming space are arranged in an up-and-down corresponding mode.

The defoaming driving unit includes a motor 46, a screw 47 and a screw sleeve, wherein the motor 46 is disposed at the lower part of the rear side of the fixing plate 41, the output end of the motor 46 is disposed toward the rear side, and the output end of the motor 46 is provided with a first driving wheel; the screw rod 47 is arranged on the fixed plate 41 along the front-back direction, and two ends of the screw rod 47 are rotatably connected to the fixed plate 41 through bearing seats; a second transmission wheel is arranged at the rear end part of the screw rod 47, a transmission belt is sleeved between the second transmission wheel and the first transmission wheel, and the motor 46 drives the screw rod 47 to rotate through the transmission belt; the screw rod sleeve is sleeved on the screw rod 47 and fixedly connected with the bottom of the sliding plate, and the screw rod 47 is driven by the screw rod sleeve to slide linearly when rotating.

The defoaming supporting and sealing member includes a supporting cylinder 48, a push rod 49, a swing rod 410, a connecting rod 411 and a rotating shaft 412, wherein the supporting cylinder 48 is disposed at the rear side of the fixing plate 41, and the output end is disposed along the left-right direction; the push rod 49 is connected to the output end of the support cylinder 48; the swing link 410 is arranged along the front-rear direction and connected with the push rod 49; the rotating shafts 412 include at least two rotating shafts 412, the rotating shafts 412 are arranged on the fixed plate 41 in parallel at intervals, and the front and rear ends of the rotating shafts 412 are rotatably connected with the fixed plate 41 through bearing seats; the connecting rods 411 include at least two connecting rods, and two ends of the connecting rods 411 are respectively and rotatably connected to the rear ends of the swing rod 410 and the rotating shaft 412; the supporting cylinder 48 drives the swing rod 410 to swing back and forth through the push rod 49, and the swing rod 410 drives the rotating shaft 412 to rotate back and forth through the connecting rod 411.

A convex strip 416 is arranged on the rotating shaft 412, the convex strip 416 is arranged on the outer wall of the rotating shaft 412 along the front-back direction and extends outwards along the radial direction of the rotating shaft 412, and a supporting plane is arranged on the outer wall of the convex strip 416; when the sliding plate 42 slides into the defoaming space, the rotating shaft 412 rotates to make the protruding strip 416 prop against the bottom of the sliding plate 42 and lift the sliding plate 42 upwards, so as to support the sliding plate 42 and make the sealing ring on the sliding plate 42 contact with the sealing ring on the top wall of the defoaming space, thereby forming a closed defoaming environment.

Further, the utility model discloses a through slide plate as glass piece carrier, utilize the straight line to slide and send into or send out the defoaming case with multi-disc glass piece, the rotatory sand grip that makes of axis of rotation through defoaming support seal part upwards supports and jack-up slide plate, makes the unsettled locking that makes progress of slide plate, and makes the sealing washer of slide plate and the tight contact of sealing ring subsides of deaeration space roof, forms the online deaeration drawer type material feeding unit that slides of airtight deaeration environment. The utility model discloses a fixed plate and slide plate, wherein, the fixed plate is fixed to be set up in the deaeration space, and slide plate slidable ground sets up in the fixed plate top to freely slide in the fixed plate top, so that make a round trip to slide around deaeration space and the space that slides between. Furthermore, the utility model is provided with a defoaming driving component and a defoaming sealing support component on the fixing plate, the defoaming driving component drives the screw rod to rotate through the motor, and the sliding plate is pushed to slide back and forth in the defoaming space and the sliding space; meanwhile, the utility model discloses a deaeration support seal assembly sets up between fixed plate and slide block, and four axis of rotation of deaeration support seal assembly set up on the fixed plate parallelly at intervals, and the axis of rotation sets up towards the fore-and-aft direction, and both ends are connected with the fixed plate rotationally through the bearing, and the rear end of each axis of rotation is connected with a pendulum rod through the connecting rod, and the pendulum rod sets up along the left and right direction, and the connecting rod both ends are connected with axis of rotation and pendulum rod rotationally respectively; the supporting cylinder of the deaeration supporting sealing component is arranged at the rear side of the fixed plate, the left end part of the supporting cylinder is rotatably connected with the fixed plate, the output end of the supporting cylinder is arranged towards the right side, the output end of the supporting cylinder is connected with a push rod, the outer end of the push rod is rotatably connected with a swing rod, and when the supporting cylinder drives the push rod to linearly move along the left-right direction, the push rod drives four rotating shafts to rotate back and forth through the swing rod and four connecting rods; the utility model discloses be equipped with one on the lateral wall of axis of rotation along the outside bellied sand grip of axis of rotation radial direction, the radial radius of sand grip is greater than the radial radius of axis of rotation lateral wall, consequently at the rotatory in-process of axis of rotation, the sand grip is along with the axis of rotation is rotatory when sliding plate below, the sand grip upwards supports the bottom of sliding plate, so that provide the ascending holding power of sliding plate, the sand grip is rotatory when just being the sliding plate position simultaneously, with the sliding plate ascending difference between jacking sand grip radial radius and the axis of rotation radial radius, make the sliding plate ascending lifting in vertical direction. The utility model is provided with a material groove which is sunken downwards, and 12 material suction parts are arranged in the material groove, and can simultaneously store and adsorb and fix 12 glass sheets to be defoamed; a sealing groove is formed in the periphery of the trough, and a rubber sealing ring can be embedded in the sealing groove; when the sliding plate is filled with glass sheets in the sliding space of the frame body, the sliding plate slides backwards to the defoaming space of the box body, the rotating shaft rotates to enable the convex strips to support and jack the sliding plate, so that the rubber sealing rings in the sliding plate sealing rings and the sealing rings arranged on the top wall of the defoaming space are tightly attached and sealed with each other, a closed space is formed outside the glass sheets in the material groove, hot air introduced into the closed space by the air inlet pipe heats the defoaming temperature to 50 ℃, and when the air pressure in the closed space is continuously increased to 0.5 MPa along with continuous introduction of the hot air, the air in the air bubbles is extruded out from between the film material and the glass sheets under the conditions of heating and air pressure extrusion.

The embodiments of the present invention are only for describing the specific implementation thereof, and are not limited to the scope of protection thereof. The present invention is not limited to the above embodiments, but can be modified in various ways without departing from the scope of the present invention.

Claims

1. The utility model provides an online deaeration drawer type material feeding unit that slides for in will waiting to eliminate the glass piece of bubble and concentrate and send into the deaeration incasement, and push out the glass piece after the deaeration is accomplished from the deaeration incasement, with supplementary unloading, its characterized in that: the defoaming device comprises a fixed plate (41), a sliding plate (42), a defoaming driving component and a defoaming supporting and sealing component, wherein the fixed plate (41) is horizontally fixed in a defoaming space of a defoaming box; the sliding plate (42) is arranged above the fixed plate (41) and can freely slide above the fixed plate (41); the defoaming driving component is arranged on the fixed plate, and the output end of the defoaming driving component is connected with the sliding plate (42) so as to drive the sliding plate (42) to linearly slide; the defoaming supporting sealing component is arranged on the fixed plate (41) and adjusts the supporting height through rotary motion, so that the sliding plate (42) is upwards jacked and supported when moving into the defoaming box, the sliding plate (42) is lifted and attached to a sealing ring on the top wall of a defoaming space in the defoaming box, a closed space is formed, hot air introduced into the closed space by the defoaming box generates air pressure, and bubbles between the glass sheets and the membrane are extruded out.

2. The on-line defoaming drawer type sliding feeding device as claimed in claim 1, wherein: the left side and the right side of the fixed plate (41) are respectively provided with a first slide rail (43) and a first branch bar, and the first slide rail (43) is slidably provided with a slide block; the first slide rail (43) and the first supporting bar respectively extend forwards to form a fixed plate (41).

3. The on-line defoaming drawer type sliding feeding device as claimed in claim 2, wherein: the sliding plate (42) is horizontally arranged above the fixed plate (41), the bottom of the left side of the sliding plate (42) is fixedly connected with the sliding block, at least two rollers (44) are arranged at the bottom of the right side of the sliding plate (42) at intervals along the projection direction of the first supporting strip, and the sliding plate (42) linearly slides back and forth between the fixed plate (41) and the front side of the fixed plate (41) through the rollers (44) and the sliding block.

4. The on-line defoaming drawer type sliding feeding device as claimed in claim 3, wherein: a material groove which is sunken downwards is arranged on the sliding plate (42), at least two material suction parts (413) are arranged in the material groove, and the glass sheet to be defoamed is placed at the material suction parts (413) and is adsorbed and fixed downwards; the periphery of above-mentioned silo is equipped with seal groove (415), and seal ring is established to embedded the sealing washer of establishing of seal groove (415), and the upper portion of seal ring extends to seal groove (415) top, and when slide block (42) moved to the deaeration space in, seal groove (415) and the sealing ring of deaeration space roof correspond the setting from top to bottom.

5. The on-line defoaming drawer type sliding feeding device as claimed in claim 4, wherein: the defoaming driving component comprises a motor (46), a screw rod (47) and a screw rod sleeve, wherein the motor (46) is arranged at the lower part of the rear side of the fixing plate (41), the output end of the motor (46) is arranged towards the rear side, and the output end of the motor (46) is provided with a first transmission wheel; the screw rod (47) is arranged on the fixed plate (41) along the front-back direction, and two ends of the screw rod (47) are rotatably connected to the fixed plate (41) through bearing seats; a second transmission wheel is arranged at the rear end part of the screw rod (47), a transmission belt is sleeved between the second transmission wheel and the first transmission wheel, and the motor (46) drives the screw rod (47) to rotate through the transmission belt; the screw rod sleeve is sleeved on the screw rod (47), the screw rod sleeve is fixedly connected with the bottom of the sliding plate, and the screw rod (47) drives the sliding plate to slide linearly through the screw rod sleeve when rotating.

6. The on-line defoaming drawer type sliding feeding device as claimed in claim 5, wherein: the defoaming supporting and sealing component comprises a supporting cylinder (48), a push rod (49), a swing rod (410), a connecting rod (411) and a rotating shaft (412), wherein the supporting cylinder (48) is arranged at the rear side of the fixing plate (41), and the output end of the supporting cylinder is arranged along the left-right direction; the push rod (49) is connected to the output end of the supporting cylinder (48); the swing rod (410) is arranged along the front-back direction and is connected with the push rod (49); the rotating shafts (412) comprise at least two rotating shafts, the rotating shafts (412) are arranged on the fixed plate (41) in parallel at intervals, and the front end and the rear end of each rotating shaft (412) are rotatably connected with the fixed plate (41) through a bearing seat; the connecting rods (411) comprise at least two connecting rods, and two ends of each connecting rod (411) are respectively and rotatably connected to the rear ends of the swing rod (410) and the rotating shaft (412); the supporting cylinder (48) drives the swing rod (410) to swing back and forth through the push rod (49), and the swing rod (410) drives the rotating shaft (412) to rotate back and forth through the connecting rod (411).

7. The on-line defoaming drawer type sliding feeding device as claimed in claim 6, wherein: the rotating shaft (412) is provided with a convex strip (416), the convex strip (416) is arranged on the outer wall of the rotating shaft (412) along the front-back direction and extends outwards along the radial direction of the rotating shaft (412), and the outer wall of the convex strip (416) is provided with a supporting plane; when the sliding plate (42) slides into the defoaming space, the rotating shaft (412) rotates to enable the convex strips (416) to abut against the bottom of the sliding plate (42) and lift the sliding plate (42) upwards so as to support the sliding plate (42) and enable the sealing ring on the sliding plate (42) to be in contact with the sealing ring on the top wall of the defoaming space, and a closed defoaming environment is formed.