A paper-free micro-movement membrane seat

Abstract

The present invention relates to the technical field of PE film seats, and in particular to a paperless micro-motion film seat, comprising a safety plate, a top cover is arranged on the upper side of the safety plate, a guide mold frame is fixedly installed between the safety plate and the top cover, film-drawing rollers and film-guiding rollers are staggered between the safety plate and the top cover, a synchronous gear is fixedly installed on the lower side of the film-drawing roller, a chain is movably sleeved on the side of the synchronous gear, an expansion component is arranged on the upper side of the safety plate, a stabilizing component is arranged on the side of the expansion component, and a film roll is arranged on the side of the expansion component and the stabilizing component. The present invention drives the shaft sleeve to move upward and squeeze with the linkage rod, pushes the expansion sleeve to expand and fix the film roll through the linkage rod, and rotates the third top seat in the opposite direction to make the expansion sleeve contract and relax the film roll, thereby realizing the paperless use and operation of the film roll to protect the environment, and can also make the film roll more stably fixed and not easy to fall off, and can quickly install and disassemble the film roll.

Description

Technical Field

[0001] The invention relates to the technical field of PE film seats, in particular to a paper-tube-free micro-motion film seat. Background Art

[0002] In the existing terminal packaging industry, large goods are basically packaged with PE film; it is used to improve the speed and quality of packaging and can also prevent dust, moisture and damage to the goods.

[0003] However, on the market now, the PE film rolls used in the fully automatic pallet wrapping machines are basically supported by paper tubes to enable them to unwind and complete the wrapping operation. It has been observed that there are still the following problems when using them:

[0004] 1. The existing PE film roll contains paper tubes, which cause great environmental pollution, have low actual value, and cause cost waste;

[0005] 2. The existing method is to connect the paper tube to the side of the shaft and lock the film roll with a nut. The film roll cannot be controlled freely during use, and the installation is slow and the efficiency is low.

[0006] 3. When the existing film roll is sleeved on the shaft, one side of the film roll will fit on the provided chassis support. During the unwinding process of the film roll, the major diameter of the film roll becomes smaller and smaller, and the film roll fits on the side of the chassis and generates friction with it, making the film roll out of the film seat not smooth. In addition, the film roll deformed by friction will be wrapped around the side of the material, causing a bubble layer to appear, affecting the packaging effect of the goods, and failing to ensure the dust-proof, moisture-proof and damage-proof advantages of the film roll packaging. Summary of the invention

[0007] In order to overcome the problems that 1. the existing PE film roll contains a paper tube inside, which causes great environmental pollution, has low actual value and causes cost waste; 2. the existing paper tube is sleeved on the side of the shaft, and the film roll is locked by a nut, so the film roll cannot be freely controlled during use, and the installation is slow and inefficient; 3. when the existing film roll is sleeved on the shaft, one side of the film roll will fit on the provided chassis support. During the unwinding process of the film roll, the major diameter of the film roll becomes smaller and smaller, and the film roll fits on the side of the chassis and generates friction with it, so that the film roll of the film seat is not smooth, and the film roll deformed by friction will be wrapped around the side of the material, causing a bubble layer to appear, affecting the packaging effect of the goods, and failing to ensure the dustproof, moisture-proof and damage-proof advantages of the film roll packaging. The present invention provides a paper-free micro-motion film seat.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a safety plate, a top cover is arranged on the upper side of the safety plate, a guide mold frame is fixedly installed between the safety plate and the top cover, film drawing rollers and film guide rollers are staggered between the safety plate and the top cover, a synchronous gear is fixedly installed on the lower side of the film drawing roller, a chain is movably sleeved on the side of the synchronous gear, an expansion component is arranged on the upper side of the safety plate, a stabilizing component is arranged on the side of the expansion component, and film rolls are arranged on the sides of the expansion component and the stabilizing component;

[0009] The expansion assembly includes a fixed shaft, a rotatable sleeve is arranged on the side of the fixed shaft, a base and a first top seat are arranged on the upper side of the sleeve, an expansion sleeve is arranged between the base and the first top seat, an expansion shaft is arranged on the side of the expansion sleeve, and a triggerable third top seat is arranged on the upper side of the expansion shaft;

[0010] The stabilizing assembly includes a stabilizing base plate, a supportable linkage plate is arranged on the upper side of the stabilizing base plate, a guideable movable plate is arranged on the lower side of the linkage plate, a rotatable matching plate is arranged on the side of the movable plate, a matching groove is arranged on the side of the matching plate, and a constraint block is arranged on the upper side of the matching groove.

[0011] Furthermore, the expansion assembly includes a fixed shaft fixedly mounted on the upper side of the safety plate, a first bearing is fixedly sleeved on the upper side of the fixed shaft, a rotating sleeve is fixedly sleeved on the side of the first bearing, and a plastic sheet is fixedly mounted on the upper side of the fixed shaft.

[0012] Furthermore, the expansion assembly also includes a base arranged on the upper side of the rotating sleeve, an expansion sleeve is arranged on the upper side of the base, and the first top seat is arranged on the side of the expansion sleeve away from the base.

[0013] Furthermore, the expansion assembly also includes an expansion sleeve arranged on the side of the expansion sleeve, the expansion sleeve shaft is arranged inside the expansion sleeve, a linkage rod is fixedly installed on the side of the expansion sleeve, a shaft sleeve is fixedly sleeved on the side of the expansion sleeve shaft, a second bearing is fixedly sleeved on the side of the expansion sleeve shaft, a compression spring is movably sleeved on the side of the expansion sleeve shaft, a second top seat is threadedly sleeved on the side of the expansion sleeve shaft, and a third top seat is arranged on the upper side of the second top seat.

[0014] Furthermore, the stabilizing assembly includes a stabilizing base plate fixedly sleeved on the side of the rotating sleeve, a ball bearing is arranged on the lower side of the stabilizing base plate, and a linkage plate is arranged on the upper side of the stabilizing base plate.

[0015] Furthermore, the stabilizing assembly also includes an active cavity arranged on the upper side of the stabilizing bottom plate, the active plate is movably installed inside the active cavity, and support plates are fixedly installed on the sides of the linkage plate and the stabilizing bottom plate.

[0016] Furthermore, the stabilizing assembly also includes a slot opened on the side of the stabilizing bottom plate, the matching plate is movably installed inside the slot, the matching slot is opened on the upper side of the matching plate, a constraint slot is opened on the bottom wall of the movable cavity, and the constraint block is movably installed inside the constraint slot.

[0017] Furthermore, the stabilizing assembly also includes a gear ring plate fixedly sleeved on the side of the matching plate, the side of the gear ring plate is meshed with a linkage gear, and a motor is fixedly installed on the lower side of the linkage gear.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] 1. The present invention sets an expansion component. The rotation of the third top seat drives the expansion barrel shaft to engage with the thread of the second top seat, so that the expansion barrel shaft drives the shaft sleeve to move upward and squeeze with the linkage rod. The linkage rod pushes the expansion sleeve to expand and fix the film roll. The reverse rotation of the third top seat makes the expansion sleeve contract and relax the film roll. The paperless operation inside the film roll protects the environment, and the film roll can be fixed more stably and not easy to fall off. The film roll can also be quickly installed and disassembled.

[0020] 2. The present invention provides a rotating sleeve and a first bearing so that the upper part of the rotating sleeve can be disassembled and operated therefrom. When the machine is not in use, it can be disassembled and stored to reduce the chance of being exposed to external wear and tear. The first bearing supports the rotating sleeve to rotate so that the upper expansion sleeve can fix the film roll. When unwinding, the rotating sleeve can rotate accordingly so that the film roll rotates together with the film-drawing roller, which makes it easier to control the film roll and ensures the stability of the film roll unwinding.

[0021] 3. The present invention arranges a stabilizing component so that the support plate elastically supports the linkage plate, so that the linkage plate elastically supports the side of the film roll and has a certain degree of avoidance when unwinding. The synchronously arranged movable plate slides inside the movable cavity to constrain and guide the linkage plate, ensuring that the linkage plate will not deviate when moving, and reducing the friction with the linkage plate when the film roll is unwinding.

[0022] 4. The present invention sets a matching plate, a matching groove and a constraint groove, and the motor drives the linkage gear to mesh with the gear ring plate to drive the matching plate to rotate and slide inside the slot. The matching plate gradually rotates a certain angle, so that the constraint groove slides into the matching groove. At this time, the movable plate at the corresponding position slides into the movable cavity, and the linkage plate moves downward with the movable plate under the elastic pulling force of the support plate, so that the linkage plate does not contact the side surface of the film roll, and the other non-unrolled side surfaces are supported by the linkage plate. Similarly, the linkage plates are triggered one by one to move downward. On the contrary, after the film roll is used, the motor drives the matching plate to rotate in the opposite direction, so that the constraint groove is guided and squeezed on the side surface of the matching groove in the matching groove to complete the gradual resetting of the linkage plate. As a result, when the film roll is unrolled, there is no friction deformation on the side surface, and the support effect on the film roll can be maintained according to the change of the major diameter of the film roll, thereby ensuring smooth unwinding of the film and the effect of winding the goods.

[0023] 5. The present invention adopts modular design and only needs to use components produced by specialized suppliers. It can be quickly installed and assembled on site and can be put into use after simple debugging, thereby improving production efficiency and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the local structure of the guide mold frame of the present invention;

[0026] Figure 3 It is a schematic diagram of other partial structures of the present invention;

[0027] Figure 4 It is a schematic diagram of the partial explosion structure of the expansion assembly of the present invention;

[0028] Figure 5 It is a partial structural schematic diagram of the rotating sleeve of the present invention;

[0029] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at point A;

[0030] Figure 7 It is a schematic diagram of the partial explosion structure of the stabilizing assembly of the present invention;

[0031] Figure 8 It is a partial structural schematic diagram of the matching plate of the present invention;

[0032] Fig. 9 It is a schematic diagram of the local structure of the stable base plate of the present invention.

[0033] Among them: 1. Safety plate; 2. Top cover; 21. Guide mold frame; 22. Film drawing roller; 23. Film guide roller; 24. Synchronous gear; 25. Chain; 3. Expansion assembly; 31. Fixed shaft; 311. Plastic sheet; 32. First bearing; 33. Rotating sleeve; 34. Base; 35. Expansion sleeve; 36. First top seat; 37. Expansion sleeve; 371. Expansion shaft; 372. Linkage rod; 373. Bushing; 38. Second top Seat; 381, third top seat; 382, ​​second bearing; 383, compression spring; 4, stabilizing assembly; 41, stabilizing bottom plate; 411, ball bearing; 42, linkage plate; 43, movable cavity; 44, movable plate; 45, support plate; 46, slot; 461, matching plate; 462, matching slot; 47, constraint slot; 471, constraint block; 48, gear ring plate; 481, linkage gear; 49, motor; 5, film roll. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0035] Embodiment: Figure 1 to Figure 2 As shown, a paperless micro-motion film seat comprises a safety plate 1, which is a rectangular plate with a hollow interior, a top cover 2 is arranged on the upper side of the safety plate 1, and the top cover 2 is a rectangular cover with a hollow side, a guide die frame 21 is fixedly installed between the safety plate 1 and the top cover 2, and film-drawing rollers 22 and film-guiding rollers 23 are equidistantly arranged between the safety plate 1 and the top cover 2 at positions corresponding to the guide die frame 21, and both ends of the film-drawing rollers 22 and the film-guiding rollers 23 penetrate the safety plate 1 and the top cover 2 for rotational installation, and the film-drawing rollers 22 and the film-guiding rollers 23 are equidistantly arranged at positions corresponding to the guide die frame 21. The film guide roller 23 is a circular roller, a synchronous gear 24 is fixedly installed on the lower side of the film drawing roller 22, a chain 25 is movably sleeved on the side of the synchronous gear 24, and the chain 25 can drive the synchronous gear 24 so that the film drawing roller 22 drives the film roll 5 to be transported on its side, an expansion component 3 is arranged on the upper side of the safety plate 1 corresponding to the film drawing roller 22 and the film guide roller 23, a stabilizing component 4 is arranged on the side of the expansion component 3, and a film roll 5 is arranged on the side of the expansion component 3 and the stabilizing component 4;

[0036] The film roll 5 can be quickly expanded and relaxed by the provided stabilizing component 4;

[0037] like Figures 3 to 5As shown, the expansion assembly 3 includes a fixed shaft 31 fixedly mounted on the upper side of the safety plate 1, the fixed shaft 31 is a circular shaft with a "T"-shaped cross section, a first bearing 32 is symmetrically fixedly sleeved on the upper side of the fixed shaft 31, a rotating sleeve 33 is fixedly sleeved on the side of the first bearing 32, the rotating sleeve 33 is a convex-shaped circular ring sleeve with a hollow center, a plastic sheet 311 is fixedly mounted on the upper side of the fixed shaft 31 and the plastic sheet 311 is movably sleeved on the side position of the rotating sleeve 33, and isolation protection is provided between the rotating sleeve 33 and the fixed shaft 31, a base 34 is provided on the upper side of the rotating sleeve 33 and the base 34 is fixedly mounted on its side by screws, the base 34 is a convex-shaped circular ring seat, an expansion sleeve 35 is provided on the upper side of the base 34 and the expansion sleeve 35 is fixed by screws The expansion sleeve 35 is fixedly installed at the side of the expansion sleeve 35. The expansion sleeve 35 is a hollow cylinder with a triangular rhombus cross-section. A first top seat 36 is provided on the side of the expansion sleeve 35 away from the base 34, and the first top seat 36 is fixedly installed at the side of the expansion sleeve 35 by screws. The first top seat 36 is a convex-shaped annular seat; specifically, the expansion sleeve 35 can be fixed by the first top seat 36 and the base 34. When the film roll 5 is installed on the side of the expansion sleeve 35, the chain 25 is driven to engage the synchronous gear 24 so that the film drawing roller 22 can rotate to guide the film roll 5, and the synchronous film guide roller 23 rotates accordingly to guide it. When the film roll 5 is pulled and unwound, the rotating sleeve 33 is driven by the first bearing 32 provided accordingly to make it rotate synchronously on the side of the fixed shaft 31;

[0038] The side of the expansion sleeve 35 is equidistantly provided with expansion sleeves 37 in a circular array, and the expansion sleeves 37 are arc-shaped plates with side splines. An expansion sleeve shaft 371 is provided inside the expansion sleeve 35, and one end of the expansion sleeve shaft 371 extends to the inside of the base 34, and the other end extends out through the inside of the first top seat 36. Linkage rods 372 are equidistantly fixedly installed on the side of the expansion sleeve 37, and the linkage rod 372 penetrates the expansion sleeve 35 and extends to the side position of the expansion sleeve shaft 371. The linkage rod 372 is a trapezoidal rod, and a shaft sleeve 373 is fixedly sleeved on the side of the expansion shaft 371 corresponding to the position of the linkage rod 372, and the shaft sleeve 373 fits the side position of the linkage rod 372. The shaft sleeve 373 is a truncated cone-shaped circular ring block, and a second bearing 382 is fixedly sleeved on the side extending from the expansion shaft 371, and the second bearing 382 is fixedly installed in the first top seat 36, and a movable shaft sleeve 373 is fixedly sleeved on the side of the expansion shaft 371 corresponding to the position of the second bearing 382. The movable sleeve is connected with a compression spring 383 and the compression spring 383 is fitted on the side of the shaft sleeve 373, which provides a certain elastic damping support for the shaft sleeve 373. The second top seat 38 is threadedly sleeved on the side of the first top seat 36 extending from the expansion shaft 371, and the second top seat 38 is fixedly installed at the side position of the first top seat 36. The second top seat 38 is a circular ring seat. A third top seat 381 is provided on the upper side of the second top seat 38 and the third top seat 381 is fixedly sleeved on the side position of the expansion shaft 371. The third top seat 381 is a circular ring seat; specifically, the expansion shaft 371 is driven to threadably engage with the second top seat 38 by the third top seat 38 through rotation, so that the expansion shaft 371 drives the shaft sleeve 373 to move upward and squeeze with the linkage rod 372, and the linkage rod 372 pushes the expansion sleeve 37 to expand and fix the film roll 5. The reverse rotation of the third top seat 381 similarly causes the expansion sleeve 37 to contract and relax the film roll 5.

[0039] The stabilizing component 4 can provide support to the side of the film roll 5, so that the film roll 5 is stable when unwinding, and will not cause interference to the film roll 5 when unwinding;

[0040] like Figures 5 to 9As shown, the stabilizing assembly 4 includes a stabilizing bottom plate 41 fixedly sleeved on the side of the rotating sleeve 33 and arranged on the upper side of the plastic sheet 311. The stabilizing bottom plate 41 is a circular ring plate with a "Z"-shaped cross section. Balls 411 are arranged equidistantly in a circular array on the lower side of the stabilizing bottom plate 41. The ball 411 is a spherical block. A linkage plate 42 is arranged equidistantly and proportionally on the upper side of the stabilizing bottom plate 41. The linkage plate 42 is a circular ring plate. An active cavity 43 is arranged equidistantly and proportionally at a position corresponding to the linkage plate 42 on the upper side of the stabilizing bottom plate 41. The active cavity 43 is a circular ring groove with a convex cross section. A movable plate 44 is movably installed inside the movable cavity 43 and the movable plate 44 is fixed Installed at the lower side of the linkage plate 42, the movable plate 44 is set to be smaller in proportion, and the movable plate 44 is a circular ring plate with a "T"-shaped cross section. Support plates 45 are symmetrically fixedly installed on the sides of the linkage plate 42 and the stable bottom plate 41. The support plates 45 are set to be smaller in proportion, and the support plates 45 are cylindrical plates made of spring steel with a continuous "W"-shaped cross section; specifically, the linkage plate 42 is elastically supported by the support plates 45, so that the linkage plate 42 elastically supports the side of the film roll 5, and has a certain avoidance when unwinding. The synchronously arranged movable plate 44 slides inside the movable cavity 43 to constrain and guide the linkage plate 42, ensuring that the linkage plate 42 will not deviate when moving;

[0041] The side of the stable bottom plate 41 is provided with a slot 46, and the slot 46 is arranged at the lower side of the active cavity 43. The slot 46 is a circular groove, and a matching plate 461 is movably installed inside the slot 46. The matching plate 461 is a circular plate, and matching slots 462 penetrating therethrough are provided in an array-like manner on the upper side of the matching plate 461 at equal intervals and in proportion to each other. The matching slot 462 is an arc-shaped slot with an inclined surface on one side, and the bottom wall of the active cavity 43 is provided with equidistant slots penetrating from the stable bottom plate 41 to the slot 46. 6, the constraint groove 47 is a rectangular groove, a constraint block 471 is movably installed inside the constraint groove 47, and the constraint block 471 is fixedly installed at the side of the movable plate 44, the constraint block 471 is fitted on the upper side of the matching plate 461, the constraint block 471 is a ladder-shaped block, and a gear ring plate 48 is fixedly sleeved on the side of the matching plate 461, and the gear ring plate 48 is a circular ring plate with teeth on the outside, and a linkage gear 481 is meshed on the side of the gear ring plate 48, and the linkage gear 481 is meshed on the side of the linkage gear A motor 49 is fixedly installed on the lower side of 481 and the motor 49 is fixed to the side position of the stable bottom plate 41 through a rectangular frame; specifically, when the chain 25 drives the unwinding, according to the unwinding speed, the motor 49 drives the linkage gear 481 to mesh with the ring gear plate 48, so that the matching plate 461 rotates and slides inside the slot 46, and the matching plate 461 gradually rotates a certain angle, so that the constraint block 471 slides into the matching groove 462. At this time, the movable plate 44 at the corresponding position slides into the movable cavity 43, and under the elastic tension of the support plate 45, the linkage plate 42 moves downward with the movable plate 44, so that the linkage plate 42 does not contact the side of the film roll 5, and the other non-unwinding sides are supported by the linkage plate 42. Similarly, the linkage plate 42 is triggered one by one to move downward. On the contrary, after the film roll 5 is used up, the motor 49 drives the matching plate 461 to rotate in the opposite direction, so that the constraint block 471 slides in the matching groove 462 and is squeezed to move upward to complete the gradual resetting of the linkage plate 42.

[0042] Working principle:

[0043] Before use: According to the modular setting, the components on the side of the top cover 2 are installed to complete the assembly, and then the modular expansion assembly 3 is installed on the lower side of the guide mold frame 21;

[0044] When in use: before unwinding, put the film roll 5 on the side of the expansion component 3, rotate the third top seat 381 to the right to make the expansion shaft 371 move upward, the shaft sleeve 373 squeezes the linkage rod 372 to make the expansion sleeve 37 expand and fix the film roll 5, and manually control the motor 49 to drive the matching plate 461 to rotate counterclockwise so that the constraint block 471 slides out from the inside of the matching groove 462 to the side of the matching groove 462, and according to the large diameter of the film roll 5, the corresponding position linkage plate 42 is triggered to move upward until it is level with the stable bottom plate 41, which supports the film roll 5, leads the head of the film roll 5 from the film roll 5, and passes the film to the side of the film drawing roller 22 and the film guide roller 23 according to the arrow on the bottom plate, and hangs the film on the goods;

[0045] During the unwinding operation, the goods rotate, and the chain 25 starts working at the same time. With the operation of the film-drawing roller 22, the goods begin to be wound, and the film roll 5 fixed by the upper part of the first bearing 32 rotates synchronously through the first bearing 32, so that the film roll 5 can be controlled more freely, and the synchronous stable bottom plate 41 rotates with the rotating sleeve 33 so that the support for the film roll 5 rotates in unison. As the unwinding motor 49 drives the matching groove 462 to rotate clockwise, the side linkage plate 42 of the film roll 5 is pulled downward by the movable plate 44. At this time, the side of the unwinding film roll 5 does not contact the linkage plate 42 and will not be deformed by friction. The remaining linkage plates 42 that have not been triggered still support the film roll 5.

[0046] After use: After the goods are wrapped, the third top seat 381 is rotated counterclockwise, and under the elastic support of the compression spring 383, the expansion shaft 371 moves downward so that the shaft sleeve 373 does not squeeze the linkage rod 372, and the expansion sleeve 37 releases the expansion fixation of the film roll 5, and the film roll 5 can be directly removed to maintain the machine. The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A paperless micro-motion film seat, comprising a safety plate (1), a top cover (2) is arranged on the upper side of the safety plate (1), a guide mold frame (21) is fixedly installed between the safety plate (1) and the top cover (2), film-drawing rollers (22) and film-guiding rollers (23) are alternately arranged between the safety plate (1) and the top cover (2), a synchronous gear (24) is fixedly installed on the lower side of the film-drawing roller (22), a chain (25) is movably sleeved on the side of the synchronous gear (24), an expansion component (3) is arranged on the upper side of the safety plate (1), a stabilizing component (4) is arranged on the side of the expansion component (3), and film rolls (5) are arranged on the sides of the expansion component (3) and the stabilizing component (4); Features: The expansion assembly (3) comprises a fixed shaft (31), a rotatable rotating sleeve (33) is arranged on the side of the fixed shaft (31), a base (34) and a first top seat (36) are arranged on the upper side of the rotating sleeve (33), an expansion sleeve (37) is arranged between the base (34) and the first top seat (36), an expansion sleeve (37) is arranged on the side of the expansion sleeve (37), and a triggerable third top seat (381) is arranged on the upper side of the expansion sleeve (371); The stabilizing assembly (4) comprises a stabilizing base plate (41), a supportable linkage plate (42) is arranged on the upper side of the stabilizing base plate (41), a movable cavity (43) is arranged on the upper side of the stabilizing base plate (41), a guideable movable plate (44) is arranged on the lower side of the linkage plate (42), and the movable plate (44) is movably mounted inside the movable cavity (43), a support plate (45) is fixedly mounted on the side of the linkage plate (42) and the stabilizing base plate (41), and a slot (46) is opened on the side of the stabilizing base plate (41). ), a rotatable matching plate (461) is provided on the side of the movable plate (44), and the matching plate (461) is movably mounted inside the slot (46), a matching groove (462) is provided on the side of the matching plate (461), and the matching groove (462) is opened on the upper side of the matching plate (461), a restraining groove (47) is opened on the bottom wall of the movable cavity (43), a restraining block (471) is provided on the upper side of the matching groove (462), and the restraining block (471) is movably mounted inside the restraining groove (47).

2. The paperless micro-movement membrane seat according to claim 1, characterized in that: The expansion assembly (3) comprises a fixed shaft (31) fixedly mounted on the upper side of the safety plate (1), a first bearing (32) fixedly sleeved on the upper side of the fixed shaft (31), a rotating sleeve (33) fixedly sleeved on the side of the first bearing (32), and a plastic sheet (311) fixedly mounted on the upper side of the fixed shaft (31).

3. The paperless micro-movement membrane seat according to claim 2, characterized in that: The expansion assembly (3) further comprises a base (34) arranged on the upper side of the rotating sleeve (33), an expansion sleeve (35) is arranged on the upper side of the base (34), and a first top seat (36) is arranged on the side of the expansion sleeve (35) away from the base (34).

4. The paperless micro-movement membrane seat according to claim 3, characterized in that: The expansion assembly (3) further comprises an expansion sleeve (37) arranged on the side of the expansion sleeve (35); the expansion sleeve shaft (371) is arranged inside the expansion sleeve (35); a linkage rod (372) is fixedly mounted on the side of the expansion sleeve (37); a shaft sleeve (373) is fixedly sleeved on the side of the expansion sleeve shaft (371); a second bearing (382) is fixedly sleeved on the side of the expansion sleeve shaft (371); a compression spring (383) is movably sleeved on the side of the expansion sleeve shaft (371); a second top seat (38) is threadedly sleeved on the side of the expansion sleeve shaft (371); and a third top seat (381) is arranged on the upper side of the second top seat (38).

5. The paperless micro-movement membrane seat according to claim 4, characterized in that: The stabilizing assembly (4) comprises a stabilizing base plate (41) fixedly sleeved on the side of the rotating sleeve (33), a ball bearing (411) is arranged on the lower side of the stabilizing base plate (41), and a linkage plate (42) is arranged on the upper side of the stabilizing base plate (41).

6. The paperless micro-movement membrane seat according to claim 5, characterized in that: The stabilizing assembly (4) further comprises a gear ring plate (48) fixedly sleeved on the side of the matching plate (461), a linkage gear (481) meshing on the side of the gear ring plate (48), and a motor (49) fixedly mounted on the lower side of the linkage gear (481).

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