CN218478534U

CN218478534U - Device for assisting chair to connect mesh cloth

Info

Publication number: CN218478534U
Application number: CN202222285482.2U
Authority: CN
Inventors: 金明华; 徐进
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-02-14
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a device for connecting mesh cloth with an auxiliary chair, which comprises a frame, wherein the frame is provided with an upper substrate and a lower substrate; a frame body positioning assembly is arranged on the upper substrate, and a clamping and pressing stretching net assembly is arranged on the lower substrate; the frame body positioning component comprises a supporting platform for supporting the frame body and a positioning pressure plate capable of being adjusted in a lifting mode; the positioning pressure plate is configured to be capable of vertically positioning the frame body on the supporting platform; the clamping and pressing stretching net component comprises a sliding support seat capable of sliding horizontally, a fixed pressing block arranged on the sliding support seat and a movable pressing block which is positioned between the sliding support seat and the fixed pressing block and can be adjusted in a lifting mode; the length direction of the fixed pressing block and the length direction of the movable pressing block are vertical to the sliding direction of the sliding support seat; the movable pressing block is in a pressing state of pressing up and down with the fixed pressing block so as to horizontally and firmly clamp the screen cloth to be connected with the frame body; the sliding support base moves transversely along the horizontal direction and drives the fixed pressing block and the movable pressing block to move so as to stretch the screen cloth.

Description

Device for assisting chair to connect mesh cloth

Technical Field

The utility model relates to a thing to sit on field, in particular to supplementary chair connects device of screen cloth.

Background

As furniture frequently used in daily life, chairs have various external structures. At present, in order to improve air permeability and heat dissipation and save materials and reduce cost, a plurality of chairs all adopt mesh to cooperate back of the chair frame or seat support seat frame as the back of the chair or the seat support of seat, and these types of seats are collectively called as mesh chairs. The mesh cloth is tightly wrapped on the frame body of the chair and is fixed on the frame body through a pressing strip, a gun nail, a fastening piece or a fastening piece; in addition, in the prior art, the assembly process of tightening and fixing the mesh on the frame body is generally completed manually, and an operator needs to press and embed the edge of the mesh into the frame body along the outer periphery of the frame body; and the mesh cloth needs to be continuously tensioned on one side, so that the mesh cloth can be finally connected on the seat in a tensioned state.

In the process, the initial operation of the net is usually easy and labor-saving, namely, when the net is connected with one frame of the frame body, the net can be easily connected with the frame body because the net is basically in a loose state; however, with subsequent operations, when the mesh needs to be further connected with the frame opposite to the other side of the frame body; at this point, the operator is required to apply a large amount of force to tension the mesh and then attach the elongated portion to the frame. However, in this process, the operator needs to hold the mesh with one hand and use a tool (e.g., a gun nail) to attach the mesh to the frame with the other hand; and the operator must once only connect the remaining screen cloth, otherwise if the screen cloth just loosens with the frame body is connected to only part of screen cloth, joint strength is not enough, leads to the screen cloth that has already been connected with the rifle nail very easily to break under the elasticity effect of its self tensioning. In addition, the quality of the chair is difficult to control, such as the tightness degree and accurate wrapping of the frame body wrapping mesh cloth due to the limitation of operation experience and operation level of workers; undoubtedly, the operation difficulty of operation force and high difficulty coefficient exists; the assembly efficiency is greatly affected.

The chinese utility model patent of cn202021422180.x discloses "an auxiliary device for mounting mesh cloth on a chair frame" includes a table top for placing mesh cloth and a clamping mechanism for clamping and fixing the chair frame, the table top is located below the clamping mechanism, and the table top and/or the clamping mechanism are lifted up and down to realize the mutual approaching or separation of the table top and the clamping mechanism; when the netted cloth is installed on the chair frame body, the netted cloth is laid on the table top, the chair frame body is installed and fixed on the clamping mechanism, then the clamping mechanism and the table top are mutually closed and the chair frame body and the netted cloth are vertically compressed to fix the relative positions of the chair frame body and the netted cloth, then the netted cloth is wrapped and tightened by manpower and fixed on the chair frame body, then the clamping mechanism and the chair frame body are turned out, the chair frame body is detached, and then the netted cloth at the position of the clamping mechanism clamping frame body is fixed by the manpower. The machine of the scheme combines manual operation, and improves the production quality and the production efficiency of the chair framework for wrapping the reticular cloth. Although the device can assist the mesh cloth to be connected with the chair frame body, the mesh cloth and the frame body can be conveniently positioned; in actual operation, the reticular cloth is still required to be wrapped and tightly fixed on the chair frame manually; the operation of manually and forcibly tensioning the mesh cloth is often the most laborious ring in the actual processing process; after the operation personnel carry out several times of operations, because the screen cloth is taut to the continuous strength of spending, lead to the hand very sour, consume very much physical power, reduce follow-up assembly efficiency.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a device for assisting a chair to connect mesh cloth; when the net is laid on the frame body, the net cloth is connected with a frame on one side of the frame body in advance; then the part of the mesh cloth which needs to be connected with the frame on the other side of the frame body is arranged between the movable pressing block and the fixed pressing block in a penetrating way; the movable pressing block and the fixed pressing block are pressed up and down to clamp the mesh cloth firmly, and then the sliding support seat slides to stretch the mesh cloth, so that the mesh cloth can be further connected with the frame of the frame body easily; the mesh cloth is firmly clamped and stretched through the clamping and pressing mesh stretching component, and an operator does not need to manually operate the mesh cloth; the net holding operation is very convenient and labor-saving, and the efficiency is improved.

The technical scheme of the utility model is realized like this:

a device for assisting a chair to connect mesh cloth comprises a frame, wherein the frame is provided with an upper substrate and a lower substrate which are horizontally arranged at an upper interval and a lower interval; one of the upper substrate and the lower substrate is provided with a frame body positioning component, and the other of the upper substrate and the lower substrate is provided with a clamping and pressing stretching component; the frame body positioning component comprises a supporting platform for supporting the frame body and a positioning pressure plate capable of being adjusted in a lifting mode; the positioning pressure plate is configured to be capable of vertically positioning the frame body on the supporting platform; the clamping and stretching net component comprises a sliding support seat capable of sliding horizontally, a fixed pressing block arranged on the sliding support seat and a movable pressing block which is positioned between the sliding support seat and the fixed pressing block and can be adjusted in a lifting mode; the length direction of the fixed pressing block and the length direction of the movable pressing block are vertical to the sliding direction of the sliding support seat; the movable pressing block is in a pressing state of pressing up and down with the fixed pressing block so as to horizontally and firmly clamp the screen cloth to be connected with the frame body; the sliding support base moves transversely along the horizontal direction and drives the fixed pressing block and the movable pressing block to move so as to stretch the screen cloth.

Preferably, the frame positioning assembly is arranged on the lower end face of the upper substrate; the clamping and pressing stretching net component is arranged on the upper end face of the lower substrate; and the clamping and pressing stretching net component and the frame body positioning component are horizontally staggered. After the frame body is positioned on the supporting platform, the clamping and pressing net stretching assembly is close to a frame at one side of the frame body, which is required to be connected with the net cloth; thereby facilitating the clamping and stretching of the mesh.

Preferably, the frame positioning assembly further comprises a base mounted on the bottom surface of the upper substrate, and the base is of an internal hollow structure; the supporting platform is connected to the bottom end of the base; and a first lifting component for driving the positioning pressure plate to lift is also arranged in the base.

Preferably, the supporting platform is of a U-shaped frame structure with a forward opening; the supporting platform comprises a supporting plate positioned at the bottom end in a horizontal mode and an installation plate of which the upper end is connected with the base; a containing groove which enables the frame body to be horizontally embedded is formed between the supporting plate and the mounting plate; the positioning pressure plate is positioned in the containing groove and is positioned at the center of the supporting plate. Then the frame body is placed on the supporting plate, and the positioning pressure plate can tightly press the frame body.

Preferably, the base comprises an upper connecting plate, a lower connecting plate and side plates, wherein the upper connecting plate and the lower connecting plate are parallel up and down, and the side plates are respectively positioned at the left side and the right side; the upper connecting plate is fixedly connected with the upper substrate, and the lower connecting plate is fixedly connected with the mounting plate; the first lifting assembly comprises a first lifting electric cylinder which is longitudinally arranged, the upper end of the first lifting electric cylinder is fixedly connected with the upper connecting plate, the first lifting electric cylinder is provided with a vertical downward first telescopic push rod, the first telescopic push rod sequentially slides to penetrate through the lower connecting plate and the mounting plate and penetrates out of the accommodating groove, and the lower end of the first telescopic push rod is connected with the positioning pressure plate. And then the positioning pressure plate can be stably driven to move up and down in the accommodating groove through the first lifting electric cylinder.

Preferably, the sliding support seat is arranged along the front-back direction and is in sliding fit with the lower substrate; the lower base plate is provided with a slide rail arranged along the left-right direction, and the bottom of the slide support seat is correspondingly provided with a slide seat in sliding fit with the slide rail.

Preferably, a hollow avoiding guide groove is arranged at the center of the lower base plate, which is positioned on the sliding support seat, and the avoiding guide groove is arranged along the left and right directions; the bottom end of the sliding support seat is provided with a guide seat which protrudes downwards in the avoiding guide groove; and the bottom end of the lower substrate is provided with a push-pull electric cylinder which is arranged along the left-right direction and acts on the guide seat in a push-pull manner. Then, the sliding support seat can be stably driven to slide left and right through the push-pull electric cylinder.

Preferably, the front end and the rear end of the sliding support seat are provided with support rods which extend upwards in a mirror image manner; the fixed pressing block is arranged along the front and back directions, and the front end and the back end of the fixed pressing block are respectively connected to the supporting rod; and the fixed pressing block is detachably connected with the supporting rod. After the screen cloth is connected with the framework, the fixed pressing block is located between the framework and the screen cloth, and the fixed pressing block needs to be detached to take away the framework.

Preferably, the movable pressing block is arranged along the front-back direction and is positioned right below the fixed pressing block; the bottom end of the movable pressing block is provided with a slide bar which extends downwards and is slidably arranged in the slide supporting seat in a penetrating way. So that the movable pressing block can stably slide up and down relative to the sliding support seat.

Preferably, the bottom end of the sliding support seat is also provided with a second lifting electric cylinder for driving the movable pressing block to lift; the second lifting electric cylinder is provided with a second telescopic push rod, and the second telescopic push rod upwards penetrates through the sliding support seat and is connected to the movable pressing block. The second lifting electric cylinder can drive the movable pressing block to move up and down; so that the movable pressing block and the fixed pressing block can be pressed together up and down.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

when the device for connecting the mesh to the auxiliary chair of the utility model is used for carrying out the mesh holding operation on the frame body, firstly, an operator connects the mesh with the frame on one side of the frame body in advance; then the frame body is arranged and positioned in the saddle; and the frame body, which is connected with the screen cloth b, is far away from the clamping and pressing screen stretching assembly, and the frame on the side opposite to the frame, which needs to be further connected with the screen cloth, is close to the clamping and pressing screen stretching assembly. Penetrating the mesh cloth between the movable pressing block and the fixed pressing block; then the movable pressing block is driven to rise to be tightly pressed with the fixed pressing block so as to firmly clamp the mesh cloth. Then the sliding support seat is controlled to slide towards the direction far away from the frame body, so that the screen cloth can be stretched along the left and right directions, and the screen cloth is tightened; and the mesh cloth is stretched and close to the side to be connected of the frame body; the end parts of the mesh cloth can be bent upwards and connected to the frame of the frame body easily by an operator; in the process, an operator does not need to stretch the mesh cloth, and the connection operation is very labor-saving and quick.

The mesh cloth is not required to be stretched by an operator, the mesh cloth can be stably and firmly clamped and stretched by the clamping and stretching assembly, the stretching force is uniform, the net holding operation is very easy, and the problem that the net holding operation in the prior art is the most laborious one-ring is solved; therefore, labor force of operators is greatly released, and the working efficiency of net closing to the frame body is improved.

Drawings

Fig. 1 is a schematic perspective view of the device according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of another angle of the device in the embodiment of the present invention;

fig. 3 is a front view of the device in an embodiment of the invention;

fig. 4 is a schematic perspective view of the frame positioning assembly according to the embodiment of the present invention;

fig. 5 is a schematic perspective view of a positioning frame of the frame positioning assembly according to the embodiment of the present invention;

FIG. 6 is a schematic view of a three-dimensional structure of the clamping and stretching assembly and the lower substrate of the present invention;

FIG. 7 is a schematic perspective view of a clamping and pressing stretching assembly according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of an embodiment of the present invention showing a mesh placed in a clamping and pressing stretching assembly;

FIG. 9 is a schematic perspective view of the embodiment of the present invention showing the movable pressing block and the fixed pressing block clamping the mesh cloth;

fig. 10 is a schematic perspective view illustrating the sliding support seat sliding to stretch the mesh cloth according to the embodiment of the present invention;

fig. 11 is a schematic perspective view illustrating the connection between the mesh and the frame body according to the embodiment of the present invention;

fig. 12 is a schematic perspective view of the embodiment of the present invention illustrating a three-dimensional structure of a fixed pressing block and a sliding support.

The figures are numbered: a frame body a; b, screen cloth; a seat support plate a1; a frame 1; an upper substrate 2; a lower substrate 3; a frame positioning assembly 4; a clamping and pressing stretching net component 5; a saddle 6; a pallet 601; a mounting plate 602; a base 7; an upper connection plate 701; a lower connecting plate 702; a side panel 703; a positioning platen 8; a containing groove 9; a first lifting electric cylinder 10; a first telescopic push rod 10a; a slide support 11; a fixed pressing block 12; a movable press block 13; a slide rail 14; a slide 15; an escape guide groove 16; a guide seat 17; a push-pull electric cylinder 18; a strut 19; a socket 191; a slide bar 20; a second lifting electric cylinder 21; a second telescopic push rod 21a.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-12, the present invention provides a device for assisting a chair to connect a mesh, which comprises a frame 1, wherein the frame 1 is provided with an upper base plate 2 and a lower base plate 3 which are spaced from each other at an upper end and a lower end and are horizontal; a frame body positioning component 4 is arranged on the upper base plate 3, and a clamping and pressing net stretching component 5 is arranged on the lower base plate 3.

As shown in fig. 1 to 5, the frame positioning assembly 4 includes a base 7 mounted on the lower end surface of the upper substrate 2, a pallet 6 for supporting the frame a, and a positioning platen 8 capable of vertically positioning the frame a on the pallet 6; specifically, the method comprises the following steps: the base 7 is of an internal hollow structure, and the base 7 includes an upper connecting plate 701 and a lower connecting plate 702 which are parallel to each other up and down, and side plates 703 which are respectively located on the left side and the right side. The upper connecting plate 701 is fixedly connected with the lower end of the upper substrate 2, and the lower connecting plate 702 is fixedly connected with the supporting platform 6; the pallet 6 is a U-shaped frame structure with a forward opening, and the pallet 6 is provided with a pallet 601 with a horizontal bottom end and a mounting plate 602 above the pallet 601 for connecting with the lower connecting plate 702; an accommodating groove 9 for allowing the frame body a to be horizontally fitted is formed between the support plate 601 and the mounting plate 602. The positioning pressure plate 8 is positioned in the accommodating groove 9, and the positioning pressure plate 8 is positioned at the center of the supporting plate 601; still be equipped with the first lifting unit who is used for driving location pressure disk 8 to go up and down in base 7, this first lifting unit includes the first lift electric jar 10 of vertical setting, the upper end and the upper junction plate 701 of this first lift electric jar 10 are fixed to be continuous, first lift electric jar 10 has vertical first flexible push rod 10a down, this first flexible push rod 10a slides in proper order and wears to establish in lower junction plate 702 and mounting panel 602 and wear out in storage tank 9, the lower extreme and the location pressure disk 8 of first flexible push rod 10a are connected. And then the first lifting electric cylinder 10 can stably drive the positioning pressure plate 8 to move up and down in the accommodating groove 9.

As shown in fig. 5 and 8-11, the frame body a is specifically a seat frame, and the seat frame is provided with a horizontal seat supporting plate a1 for being installed with a chassis; when the frame body a is connected with the mesh cloth b, an operator connects the mesh cloth b with the frame on one side of the frame body a in advance; then, the frame body a is horizontally placed in the accommodating groove 9, so that the supporting plate 601 can just support the base supporting plate a1; then the positioning pressure plate 8 is driven to be pressed on the upper end of the seat supporting plate a1; thereby enabling the frame body a to be stably fixed on the saddle 6; the positioning is convenient and fast.

As shown in fig. 1-7, the clamping and stretching net assembly 5 comprises a sliding support seat 11 capable of sliding horizontally, a fixed pressing block 12 arranged at the upper end of the sliding support seat 11, and a movable pressing block 13 capable of being adjusted in a lifting manner and located between the sliding support seat 11 and the fixed pressing block 12; specifically, the method comprises the following steps: the sliding support seat 11 is arranged along the front-back direction, the front side and the back side of the lower substrate 3 are respectively provided with a sliding rail 14 arranged along the left-right direction, and the bottom of the sliding support seat 11 is correspondingly provided with a sliding seat 15 connected to the sliding rail 14 in a sliding manner; so that the slide bearing 11 can slide left and right along the lower substrate 3. As shown in fig. 3 and 6, an avoidance guide groove 16 is provided at the center of the slide support seat 11 of the lower substrate 2 in the left-right direction; the bottom end of the sliding support seat 11 is provided with a guide seat 17 which extends downwards into the avoidance guide groove 16; a push-pull electric cylinder 18 capable of driving the guide seat 17 is arranged at the bottom end of the lower substrate 2, the push-pull electric cylinder 18 is installed at the bottom end of the lower substrate 2 along the left-right direction, and a push rod of the push-pull electric cylinder 18 is connected to the guide seat 17; then, the slide bearing 11 can be stably driven to slide left and right along the lower substrate 2 by pushing and pulling the electric cylinder 18.

Supporting rods 19 which extend upwards are arranged at the front end and the rear end of the sliding supporting seat 11 in a mirror image mode, the fixed pressing block 12 is arranged along the front-rear direction, and the front end and the rear end of the fixed pressing block 12 are connected to the upper ends of the supporting rods 19 respectively; the fixed pressing block 12 is detachably connected with the support rod 19; as shown in fig. 12, an insertion hole 191 through which the fixed pressing block 12 can horizontally pass is formed at the upper end of each support rod 19, and both ends of the fixed pressing block 12 are respectively inserted into the insertion holes 191, so that the fixed pressing block 12 and the support rods 19 are longitudinally fixed; the fixed pressing block 12 can also be directly and transversely drawn out to be disassembled. The movable pressing block 13 is arranged right below the fixed pressing block 12 along the front-back direction, and the movable pressing block 13 is in sliding fit with the sliding support seat 11; the front end and the rear end of the bottom of the movable pressing block 13 are respectively provided with a slide rod 20 which extends downwards and is slidably arranged in the slide support seat 11 in a penetrating way, so that the movable pressing block 13 can slide up and down relative to the slide support seat 11; a second lifting electric cylinder 21 for driving the movable pressing block 13 to lift is arranged at the bottom end of the sliding support seat 11; the second lifting electric cylinder 21 is installed at the bottom end of the sliding support base 11 and can be just accommodated in the avoiding guide groove 16. The second lifting electric cylinder 21 is provided with a second telescopic push rod 21a extending upwards, and the second telescopic push rod 21a is connected with the bottom end of the movable pressing block 13; then the second lifting electric cylinder 21 can drive the movable pressing block 13 to move up and down; and the movable pressing block 13 and the fixed pressing block 12 have a pressing state of pressing together up and down.

Then as shown in fig. 8-11, the operation process of connecting the mesh cloth by using the device of the utility model is as follows: firstly, an operator connects a mesh cloth b with a frame on one side of a frame body a in advance; then the frame body a is arranged and positioned in the saddle 6; and the frame body a is far away from the clamping and pressing stretching net assembly 5, and the opposite side frame which needs to be further connected with the mesh cloth b is close to the clamping and pressing stretching net assembly 5. Initially, the movable pressing block 13 and the fixed pressing block 12 are vertically spaced, and as shown in fig. 8, the mesh cloth b is arranged between the movable pressing block 13 and the fixed pressing block 12 in a penetrating manner; and the operator slightly straightens the mesh b. Then, as shown in fig. 9, the movable pressing block 13 is driven to rise to press against the fixed pressing block 12, so that the mesh cloth b is clamped between the movable pressing block 13 and the fixed pressing block 12. Then, as shown in fig. 10, the sliding support seat 11 is controlled to slide in a direction away from the frame body a, so that the mesh cloth b can be stretched in the left-right direction, and the mesh cloth b is tightened; and the mesh cloth b is stretched and close to the side to be connected of the frame body a; then, as shown in fig. 11, since the side end of the mesh b is closer to the frame of the frame a, the operator can easily bend the end of the mesh b upwards and connect the mesh b to the frame of the frame a; in the process, an operator does not need to stretch the mesh cloth, and the connection operation is very labor-saving and quick. After the screen cloth b is connected with the frame body a; then the movable pressing block 13 is descended and reset, and then the sliding support seat 11 is glidingly reset; obtaining a frame body a tightly connected with the screen cloth b; then, the fixed pressing block 12 is further pulled away from the supporting rod 19, so that the positioning pressing plate 8 is reset upwards, and the frame body a can be taken down from the supporting platform 6. Therefore, the device of the utility model is used for assisting the frame body a to connect the mesh cloth b, so that the mesh cloth b is not required to be stretched by an operator, the clamping and stretching assembly 5 can stably clamp and stretch the mesh cloth b, the stretching force is uniform, the net holding operation is very easy, and the most laborious ring of the net holding operation in the prior art is solved; therefore, labor of operators is greatly released, and the net closing efficiency of the frame body a is improved.

Claims

1. The utility model provides a supplementary chair connects device of screen cloth which characterized in that: the device comprises a frame, wherein the frame is provided with an upper substrate and a lower substrate which are horizontally arranged at an upper interval and a lower interval; one of the upper substrate and the lower substrate is provided with a frame body positioning component, and the other of the upper substrate and the lower substrate is provided with a clamping and pressing stretching component; the frame body positioning component comprises a supporting platform for supporting the frame body and a positioning pressure plate capable of being adjusted in a lifting mode; the positioning pressure plate is configured to be capable of vertically positioning the frame body on the support platform; the clamping and stretching net component comprises a sliding support seat capable of sliding horizontally, a fixed pressing block arranged on the sliding support seat and a movable pressing block which is positioned between the sliding support seat and the fixed pressing block and can be adjusted in a lifting mode; the length direction of the fixed pressing block and the length direction of the movable pressing block are vertical to the sliding direction of the sliding support seat; the movable pressing block is in a pressing state of pressing up and down with the fixed pressing block so as to horizontally and firmly clamp the screen cloth to be connected with the frame body; the sliding support base moves transversely along the horizontal direction and drives the fixed pressing block and the movable pressing block to move so as to stretch the screen cloth.

2. The device for connecting mesh cloth to auxiliary chairs according to claim 1, wherein: the frame body positioning assembly is arranged on the lower end face of the upper substrate; the clamping and pressing stretching net component is arranged on the upper end face of the lower substrate; and the clamping and pressing stretching net component and the frame body positioning component are horizontally staggered.

3. Device for connecting a mesh to an auxiliary chair according to claim 2, characterized in that: the frame positioning assembly also comprises a base arranged on the bottom surface of the upper substrate, and the base is of an internal hollow structure; the supporting platform is connected to the bottom end of the base; and a first lifting component for driving the positioning pressure plate to lift is also arranged in the base.

4. Device for connecting a mesh to an auxiliary chair according to claim 3, characterized in that: the supporting platform is of a U-shaped frame structure with a forward opening; the supporting platform comprises a supporting plate positioned at the bottom end in a horizontal mode and an installation plate of which the upper end is connected with the base; a containing groove which enables the frame body to be horizontally embedded is formed between the supporting plate and the mounting plate; the positioning pressure plate is positioned in the containing groove and is positioned at the center of the supporting plate.

5. Device for connecting a mesh to an auxiliary chair according to claim 4, characterized in that: the base comprises an upper connecting plate and a lower connecting plate which are parallel up and down, and side plates which are respectively positioned at the left side and the right side; the upper connecting plate is fixedly connected with the upper substrate, and the lower connecting plate is fixedly connected with the mounting plate; the first lifting assembly comprises a first lifting electric cylinder which is longitudinally arranged, the upper end of the first lifting electric cylinder is fixedly connected with the upper connecting plate, the first lifting electric cylinder is provided with a vertical downward first telescopic push rod, the first telescopic push rod sequentially slides to penetrate through the lower connecting plate and the mounting plate and penetrates out of the accommodating groove, and the lower end of the first telescopic push rod is connected with the positioning pressure plate.

6. Device for connecting a mesh to an auxiliary chair according to claim 2, characterized in that: the sliding support seat is arranged along the front-back direction and is in sliding fit with the lower substrate; the lower base plate is provided with a slide rail arranged along the left-right direction, and the bottom of the slide support seat is correspondingly provided with a slide seat in sliding fit with the slide rail.

7. Device for connecting a mesh to an auxiliary chair according to claim 6, characterized in that: a hollow avoiding guide groove is arranged at the center of the lower substrate, which is positioned on the sliding support seat, and the avoiding guide groove is arranged along the left and right directions; the bottom end of the sliding support seat is provided with a guide seat which protrudes downwards in the avoiding guide groove; and the bottom end of the lower substrate is provided with a push-pull electric cylinder which is arranged along the left-right direction and acts on the guide seat in a push-pull manner.

8. Device for connecting a mesh to an auxiliary chair according to claim 6, characterized in that: the front end and the rear end of the sliding support seat are provided with support rods which extend upwards in a mirror image manner; the fixed pressing block is arranged along the front-back direction, and the front end and the back end of the fixed pressing block are respectively connected to the supporting rod; and the fixed pressing block is detachably connected with the supporting rod.

9. The device for connecting mesh cloth to auxiliary chairs according to claim 8, wherein: the movable pressing block is arranged along the front-back direction and is positioned right below the fixed pressing block; the bottom end of the movable pressing block is provided with a slide bar which extends downwards and is slidably arranged in the slide supporting seat in a penetrating way.

10. The device for connecting mesh cloth to auxiliary chairs according to claim 9, wherein: the bottom end of the sliding support seat is also provided with a second lifting electric cylinder for driving the movable pressing block to lift; the second lifting electric cylinder is provided with a second telescopic push rod, and the second telescopic push rod upwards penetrates through the sliding support seat and is connected to the movable pressing block.