CN115321462A

CN115321462A - Chair net-laying process

Info

Publication number: CN115321462A
Application number: CN202211026885.3A
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: 2022-11-11
Anticipated expiration: 2042-08-25
Also published as: CN115321462B

Abstract

The invention discloses a chair net covering process, which comprises the following steps: s1, primarily connecting a supporting mesh cloth with a frame main body; connecting the supporting mesh cloth with a first side frame of the frame main body; the other end of the supporting mesh cloth forms a connecting end ready to be connected with the second side frame; s2, installing the frame main body in a device for assisting in supporting mesh connection; positioning the frame main body between the positioning pressure plate and the supporting platform up and down; s3, clamping the supporting mesh cloth at the connecting end by the clamping and pressing mesh stretching assembly; driving the lower positioning pressing block to ascend to be in press fit with the upper positioning pressing block so as to firmly clamp the support screen cloth up and down; s4, driving a sliding support seat for bearing the upper positioning pressing block and the lower positioning pressing block to move horizontally to horizontally stretch and support the mesh cloth; s5, turning the connecting ends of the supporting mesh cloth upwards and connecting the connecting ends to the second side frame; s6, the lower positioning pressing block descends and resets, and the upper positioning pressing block is detached from the sliding support seat; and S7, taking the frame main body out of the frame positioning assembly.

Description

Chair net-laying process

Technical Field

The invention relates to the field of seats, in particular to a chair net covering process.

Background

Comfort of the chair and standardized installation of modules are more and more favored by customers, and the office network chair gradually becomes the mainstream of the office chair. At present, the mainstream office mesh chair in the market can adopt mesh cloth to match with a seat frame to serve as the seat of the chair. The screen cloth is tightly wrapped on the seat frame and is fixed on the seat frame through a pressing strip, a gun nail, a fastening piece or a fastening piece; however, in the prior art, the assembly process of tightening and fixing the screen cloth on the seat frame is generally completed manually; an operator connects the mesh to one side of the seat frame by a gun nail in advance; and then tensioning the mesh cloth, and connecting the mesh cloth with the other side of the seat frame while tensioning the mesh cloth. In the operation process, when the mesh cloth is connected with one frame of the frame body in advance, the mesh cloth can be easily connected with the frame body because the mesh cloth is basically in a loose state; but in the subsequent operation, when the mesh needs to be further connected with the frame opposite to the other side of the frame body; at this time, the operator is required to take a large amount of force to tighten the mesh cloth and then connect the end of the mesh cloth to the frame. In the process, an operator needs to pull the mesh cloth by one hand all the time, and the other hand connects the mesh cloth with the frame body by using a tool (such as a gun nail); the operator must connect the remaining mesh cloth all at once, otherwise if the mesh cloth only partly connects with the frame just loosen the mesh cloth, the connecting part intensity is not enough, causes the mesh cloth that has already been connected with the rifle nail to break under the elasticity effect of its self tensioning very easily. 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; because the artificial stretching force that the screen cloth received is inhomogeneous for there is the difference in the tensioning degree everywhere of screen cloth after connecting, influences the net effect of stretching. Therefore, the mode of connecting the seat frame with the screen cloth by pure manual operation undoubtedly has the operation difficulties of operation labor and high difficulty coefficient; the assembly efficiency is very 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 reticular cloth is installed on the chair frame body, the reticular 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 reticular cloth are vertically compressed to fix the relative positions of the two, then the reticular cloth is wrapped and tightly fixed on the chair frame body by manpower, then the clamping mechanism and the chair frame body are turned out, the chair frame body is detached, and then the reticular cloth at the position of the clamping mechanism clamping frame body is fixed by 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 obviously the most laborious ring in the actual processing process; after the operator performs several operations, the operator can strain the mesh cloth by continuously spending strength, so that hands are very sour, the physical strength is greatly consumed, and the subsequent assembly efficiency is reduced; the device still does not maximize the release of manual force.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a chair door-screen process; when a net is laid on the frame main body, the supporting net cloth is connected with the first side frame of the frame main body in advance; then the frame main body is arranged on the frame body positioning component, and the connecting end of the supporting mesh cloth is arranged between the lower positioning pressing block and the upper positioning pressing block in a penetrating way; the lower positioning pressing block and the upper positioning pressing block are pressed up and down to clamp the supporting mesh cloth firmly, and then the sliding support seat slides to stretch the supporting mesh cloth, so that the connecting end of the supporting mesh cloth can be easily folded upwards to be connected with the second side frame; the supporting mesh cloth is firmly clamped and stretched by the clamping and pressing mesh stretching assembly, so that the stretching force applied to each part of the supporting mesh cloth is uniform, and the stretched mesh is smooth; and operating personnel will support the screen cloth and be connected light laborsaving with the frame main part, raise the efficiency.

The technical scheme of the invention is realized as follows:

a chair net covering process comprises the following steps:

s1, primarily connecting a supporting mesh cloth with a frame main body; the frame main body is of a rectangular structure, and the supporting screen cloth is connected with a first side frame on one side of the frame main body; the other end of the supporting mesh cloth forms a connecting end which is prepared to be connected with a second side frame opposite to the first side frame;

s2, installing the frame main body in a device for assisting in supporting mesh connection; horizontally mounting the frame main body on a frame positioning assembly above the device, and vertically positioning the frame main body between a positioning pressure plate and a supporting platform of the frame positioning assembly; and the second side frame is close to the clamping and pressing stretching net component positioned on one side below the frame body positioning component;

s3, clamping the supporting mesh cloth at the connecting end by the clamping and pressing mesh stretching assembly; the connecting end of the supporting mesh cloth is arranged between an upper positioning pressing block and a lower positioning pressing block of the clamping and pressing stretching net component in a penetrating mode; then the lower positioning pressing block is driven to ascend to be in tight fit with the upper positioning pressing block so as to clamp the support screen cloth up and down firmly;

s4, driving a sliding support seat for bearing the upper positioning pressing block and the lower positioning pressing block to move horizontally to horizontally stretch and support the mesh cloth; the sliding support seat moves towards the direction far away from the first side frame; the connecting end of the supporting mesh cloth displaces relative to the second side frame and passes over the second side frame;

s5, turning the connecting ends of the supporting mesh cloth upwards and connecting the connecting ends to the second side frame;

s6, the lower positioning pressing block descends and resets, and the upper positioning pressing block is detached from the sliding support seat; the upper positioning pressing block is detachably connected with the sliding supporting seat;

s7, taking the frame main body out of the frame positioning assembly; the positioning platen is urged longitudinally away from the frame body to enable the frame body to be removed from the pallet.

Preferably, in step S3, the connecting end of the supporting mesh cloth is located at the inner side below the second side frame; in step S4, the connecting end of the supporting mesh is located at the outer side below the second side frame. Then, the connecting end of the support screen cloth and the second side frame are relatively displaced by stretching the support screen cloth, so that the connecting end can be easily upturned to be connected with the second side frame.

Preferably, in step S4, the portion of the support mesh cloth between the first side frame and the nip stretching net assembly is tensioned; the upper positioning pressing block is positioned on the inner side below the second side frame; the sliding support seat drives the upper positioning pressing block and the lower positioning pressing block to move towards the end part close to the second side frame. So that the clamping and pressing stretching net component can not interfere with the second side frame; and the upper positioning pressing block is close to the second side frame, so that the tensioned part of the supporting mesh cloth basically covers the frame main body.

Preferably, in step S2, the pallet is a U-shaped frame structure with an opening facing forward; the supporting platform comprises a supporting plate positioned at the horizontal bottom end and an installation plate at the upper end; a containing groove which enables the frame main body to be horizontally embedded is formed between the supporting plate and the mounting plate; the positioning pressure plate is arranged in the accommodating groove in a lifting manner, and is positioned at the center of the supporting plate; the frame main body is horizontally placed in the accommodating groove, and the positioning pressure plate is pressed down on the frame main body to vertically position the frame main body. So that the frame main body is convenient to install and position.

Preferably, the frame body is a seat frame having a horizontal seat support portion for connection with a chassis; the frame main body is horizontally arranged in the accommodating groove to enable the supporting part of the supporting seat to be supported by the supporting plate; the positioning platen is then urged against the upper end of the seat support. Thereby enabling to stably fix the frame main body.

Preferably, the frame positioning assembly further comprises a base, wherein the base is of an internal hollow structure; the supporting platform is connected to the bottom end of the base; still be equipped with the first lifting unit who is used for drive location pressure disk to go up and down in the base, first lifting unit is including the first lift electric jar of vertical setting, and the upper end and the base of this first lift electric jar are fixed to be continuous, and first lift electric jar has vertical flexible push rod down, and this first flexible push rod slides and wears to establish in the storage tank, and the lower extreme and the location pressure disk of first flexible push rod are connected. 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, in steps S2 and S3, the apparatus includes a frame, and an upper substrate and a lower substrate disposed on the frame and spaced apart from each other at an upper and a lower level; the frame body positioning assembly is arranged at the bottom end of the upper substrate, and the clamping, pressing and stretching assembly is arranged at the upper end of the lower substrate; and the clamping and pressing stretching net component and the frame main body positioning component are horizontally staggered.

Preferably, in the steps S2 and S3, the slide bearing is arranged along the front-back direction, and the slide bearing can slide left and right along the lower substrate; the upper positioning pressing block is arranged at the upper end of the sliding support seat along the front-back direction, the lower positioning pressing block is arranged between the sliding support seat and the upper positioning pressing block along the front-back direction, and the lower positioning pressing block can be adjusted in a lifting mode relative to the sliding support seat.

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

Preferably, a second lifting electric cylinder for driving the lower positioning pressing block to lift is arranged at the bottom end of the sliding support seat; 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 lower positioning pressing block. The second lifting electric cylinder can drive the lower positioning pressing block to move up and down; so that the lower positioning pressing block and the fixed pressing block can be pressed together up and down.

Preferably, the lower substrate 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 middle position 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. And 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 upper end of each supporting rod is provided with a socket through which the upper positioning pressing block can horizontally pass, and two ends of the upper positioning pressing block are respectively inserted into the sockets so that the upper positioning pressing block and the supporting rods are longitudinally fixed. Then the upper positioning pressing block can be conveniently installed or detached with the sliding support seat.

Preferably, the upper positioning pressing block and the lower positioning pressing block are both of metal structures. Structural strength is high, can effectively press from both sides firmly and support the screen cloth.

Preferably, the support mesh is connected with the first side frame and the second side frame by gun nails. So that the connection is very quick and convenient.

The design starting point, the idea and the beneficial effects of the invention adopting the technical scheme are as follows:

in the chair net-closing process, when a frame main body is subjected to net-closing operation, firstly, an operator connects a support net cloth with a first side frame of the frame main body in advance; then the frame main body is arranged and positioned in the frame positioning component; and make the second side frame of frame main part be close to press and strain the net subassembly, support the link of screen cloth promptly and be close to press and strain the net subassembly. And then, the connecting end of the support screen cloth is penetrated between the lower positioning pressing block and the upper positioning pressing block, and then the lower positioning pressing block is driven to ascend and is pressed tightly with the upper positioning pressing block so as to clamp the support screen cloth firmly up and down. Then the sliding support seat is controlled to slide towards the direction far away from the first side frame, so that the support mesh cloth can be stretched along the left-right direction, and the support mesh cloth is tightened; and the connecting end of the supporting mesh cloth passes over the outer side of the second side frame; so that an operator can easily bend the support mesh cloth upwards and connect the support mesh cloth to the second side frame; in the operation process of connecting and supporting the frame main body with the supporting mesh cloth, an operator does not need to stretch the supporting mesh cloth with force, and the connecting operation is very easy and labor-saving; the assembly efficiency can be improved, and the productivity is improved.

Secondly, the clamping and stretching net assembly is adopted to stably clamp and stretch the supporting net cloth, so that the stretching force applied to each part of the supporting net cloth is uniform, and the supporting net cloth is tensioned and leveled; the net stretching effect is better.

Drawings

FIG. 1 is a schematic perspective view of a seat frame according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the present invention illustrating the initial attachment of a support web to a seat frame;

FIG. 3 is a perspective view of the seat frame mounted to the frame positioning assembly in an embodiment of the present invention;

FIG. 4 is a schematic perspective view of an embodiment of the present invention in which a lower positioning pressing block and an upper positioning pressing block clamp a supporting mesh cloth

FIG. 5 is a side view of the lower and upper positioning press blocks clamping a support web in accordance with an embodiment of the present invention;

FIG. 6 is a schematic perspective view of an embodiment of the present invention in which the sliding support base slides to stretch the support mesh;

FIG. 7 is a side view of an embodiment of the present invention with a sliding support shoe sliding to stretch the support web;

FIG. 8 is a schematic perspective view of an embodiment of the present invention illustrating the attachment end of the support web to the second side frame;

FIG. 9 is a schematic perspective view of the device according to an embodiment of the present invention;

FIG. 10 is a schematic perspective view of another angle of the device according to the present invention

FIG. 11 is a front view of the device of the present invention in an example embodiment;

FIG. 12 is a perspective view of a frame positioning assembly according to an embodiment of the present invention;

FIG. 13 is a schematic perspective view of a main frame of a positioning frame of the frame positioning assembly according to an embodiment of the present invention;

FIG. 14 is a schematic perspective view of the combination of the nip-press stretching assembly and the lower base plate in the embodiment of the present invention;

FIG. 15 is a schematic perspective view of a nip-press screen assembly according to an embodiment of the present invention;

FIG. 16 is a schematic perspective view of the detachable connection between the upper positioning pressing block and the supporting rod according to the embodiment of the present invention.

The figures are numbered: a frame body a; a first side frame a1; a second side frame a2; a seat support portion a3; supporting the screen cloth b; a connection end b1; 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; an upper positioning pressing block 12; a lower positioning pressing 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 that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. 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 than one 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 embodiment of the invention is as follows:

as shown in fig. 1 to 16, the present invention provides a chair covering process, which includes the steps of:

s1, as shown in figures 1 and 2, an operator firstly connects a supporting mesh b with a frame main body a preliminarily; the method specifically comprises the following steps: the frame main body a is of a rectangular structure, and the supporting mesh cloth b is connected with a first side frame a1 on one side of the frame main body a through a gun nail; then the other end of the supporting mesh cloth b forms a connecting end b1; as shown in fig. 2, the connecting end b1 is prepared to be connected to a second side frame b2 opposite to the first side frame a1; in this step, operating personnel only need with support screen cloth b with first side frame a1 be connected can, connect the swift laborsaving of operation, then this step of completion that can be lighter.

S2, installing the frame main body a in a device connected with the auxiliary support screen cloth b; the supporting mesh cloth b is connected and supported by the auxiliary device.

Specifically, the method comprises the following steps: as shown in fig. 3 and 9-13, the device comprises a frame 1, wherein an upper substrate 2 and a lower substrate 3 which are horizontally arranged at an upper interval and a lower interval are arranged on the frame 1; the upper substrate 3 is provided with a frame body positioning assembly 4, and the lower substrate 3 is provided with a clamping and pressing stretching net assembly 5. The frame positioning assembly 4 comprises a base 7 arranged on the lower end surface of the upper substrate 2, a supporting platform 6 for supporting the frame body a and a positioning pressure plate 8 capable of vertically positioning the frame body a on the supporting platform 6; specifically, the method comprises the following steps: the base 7 is of an internal hollow structure, and the base 7 comprises an upper connecting plate 701, a lower connecting plate 702 and side plates 703 which are respectively positioned at the left side and the right side, wherein the upper connecting plate 701 and the lower connecting plate 702 are parallel. The upper connecting plate 701 is fixedly connected with the lower end of the upper base plate 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; a receiving groove 9 for allowing the frame body a to be horizontally inserted 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 connected to each other, 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. 1, 2, 12 and 13, the frame body a is embodied as a seat frame, and the seat frame is provided with a horizontal seat supporting part a3 for being installed with a chassis; then, in the step S2, the frame body a is horizontally placed in the accommodating groove 9, so that the supporting plate 601 can just support the seat supporting part a3; then the positioning pressure plate 8 is driven to press the upper end of the seat supporting part a3; thereby enabling the frame body a to be stably fixed on the pallet 6; the location is convenient and fast. The clamping and stretching net component 5 is positioned at one side below the supporting platform 6, and the second side frame a2 of the frame main body a is close to the clamping and stretching net component 5.

S3, clamping the supporting mesh cloth at the connecting end by the clamping and pressing mesh stretching assembly;

as shown in fig. 4 and 9-16, the clamping and stretching net assembly 5 comprises a sliding support seat 11 capable of sliding horizontally, an upper positioning pressing block 12 arranged at the upper end of the sliding support seat 11, and a lower positioning pressing block 13 capable of being adjusted up and down and located between the sliding support seat 11 and the upper positioning pressing block 12; specifically, the method comprises the following steps: the sliding support 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 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. 10 and 14, an avoidance guide groove 16 is provided at the center of the slide support base 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; the bottom end of the lower substrate 2 is provided with a push-pull electric cylinder 18 capable of driving the guide seat 17, 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 upper positioning pressing block 12 is arranged along the front-rear direction, and the front end and the rear end of the upper positioning pressing block 12 are connected to the upper ends of the supporting rods 19 respectively; the upper positioning pressing block 12 is detachably connected with the support rod 19; as shown in fig. 16, an insertion hole 191 through which the upper positioning pressing block 12 can horizontally pass is formed in the upper end of each support rod 19, and both ends of the upper positioning pressing block 12 are respectively inserted into the insertion holes 191, so that the upper positioning pressing block 12 and the support rods 19 are longitudinally fixed; the upper positioning pressing block 12 can also be directly and transversely drawn out to be disassembled. The lower positioning pressing block 13 is arranged right below the upper positioning pressing block 12 along the front-back direction, and the lower positioning 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 lower positioning 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 lower positioning pressing block 13 can slide up and down relative to the slide support seat 11; a second lifting electric cylinder 21 for driving the lower positioning 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 lower positioning pressing block 13; then the second lifting electric cylinder 21 can drive the lower positioning pressing block 13 to move up and down; the lower positioning pressing block 13 and the upper positioning pressing block 12 are in a pressing state of being pressed together up and down; and both are metal construction, and structural strength is high, can effectively press from both sides firmly and support screen cloth b.

Then, in the step S3, initially, the lower positioning pressing block 13 and the upper positioning pressing block 12 are vertically spaced; as shown in fig. 3 and 4, the connecting end b1 of the supporting mesh b is inserted between the upper positioning pressing block 13 and the lower positioning pressing block 12, and the operator slightly straightens the supporting mesh b; and then the lower positioning pressing block 13 is driven to ascend to be in press fit with the upper positioning pressing block 12 so as to clamp the support screen cloth b up and down firmly. As shown in fig. 5, at this time, the connecting end b1 of the supporting mesh b is located at the inner side of the second side frame a2, and it is difficult to connect the supporting mesh b with the second side frame a 2.

S4, driving the sliding support seat 11 to move horizontally to stretch and support the mesh cloth b horizontally; controlling the push-pull electric cylinder 18 to drive the sliding support seat 11 to move towards the direction far away from the first side frame a1; because the upper positioning pressing block 12 and the lower positioning pressing block 13 press the supporting mesh cloth b up and down, the connecting end b1 of the supporting mesh cloth b will displace relative to the second side frame a2 and go beyond the second side frame a2; so that the connecting end b1 of the supporting mesh cloth b is positioned at the outer side below the second side frame a2; in this step, the slide support 11 drives the upper positioning pressing block 12 and the lower positioning pressing block 13 to move close to the second side frame a2, so that the interference with the second side frame a2 is avoided. As shown in fig. 6 and 7, the part of the supporting mesh b between the first side frame a1 and the clamping and pressing mesh stretching assembly 5 is tensioned, and the stretching force applied to each part of the supporting mesh b is uniform, so that the supporting mesh b is uniform in stretching degree and good in mesh stretching effect; and the connecting end b1 of the supporting mesh cloth b can be easily turned upwards to be connected with the second side frame a 2. In addition, in the process, the upper positioning pressing block 12 is always positioned on the inner side below the second side frame a2; the sliding support 11 drives the upper positioning pressing block 12 and the lower positioning pressing block 13 to move towards the end part close to the second side frame a 2. So that the clamping and stretching net component 5 does not interfere with the second side frame a2; and the pressing block 12 is positioned close to the second side frame a2 so that the part of the support mesh b which is tensioned substantially covers the frame body a.

S5, turning the connecting end b1 of the supporting mesh cloth b upwards and connecting the connecting end b with the second side frame a2 by using a gun nail; as shown in fig. 6 and 7, an operator can easily bend the end of the supporting mesh b upwards and connect the end to the second side frame a2 of the frame body a; in the process, an operator does not need to stretch the supporting mesh cloth, so that the connection operation is very labor-saving and quick.

S6, the lower positioning pressing block 13 descends and resets, and the upper positioning pressing block 12 is detached from the sliding support seat 11; then the frame main body a needs to be taken down from the device, so that the lower positioning pressing block 13 descends and resets to loosen the supporting mesh cloth b; because the upper positioning pressing block 12 is detachably connected with the supporting rod 19, the upper positioning pressing block 12 is directly detached from the supporting rod 19.

S7, taking the frame main body a out of the frame positioning component 4; finally, the positioning pressure plate 8 is driven to ascend to be far away from the frame body a, so that the frame body a can be taken out of the saddle 5; so that the supporting mesh b is completely assembled with the first side frame a1 and the second side frame a2 of the seat frame body a.

Therefore, the auxiliary frame main body a is connected with the supporting mesh b by the auxiliary device in the net pressing process, so that the supporting mesh b does not need to be stretched by an operator, the clamping and stretching assembly 5 can stably clamp and stretch the supporting mesh b, the stretching force is uniform, the net pressing operation is very easy, and the problem that the net pressing operation is most laborious 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. A chair net laying process is characterized in that: the method comprises the following steps:

s5, turning over the connecting end of the supporting mesh cloth upwards and connecting the connecting end to the second side frame;

s6, the lower positioning pressing block descends and resets, and the upper positioning pressing block is detached from the sliding support seat; the upper positioning pressing block is detachably connected with the sliding support seat;

2. The chair covering process according to claim 1, characterized in that: in the step S3, the connecting end of the supporting mesh cloth is positioned on the inner side below the second side frame; in step S4, the connecting end of the supporting mesh is located at the outer side below the second side frame.

3. The chair covering process according to claim 1, characterized in that: in the step S4, the part of the supporting mesh cloth, which is positioned between the first side frame and the clamping and pressing mesh stretching assembly, is tensioned; the upper positioning pressing block is positioned on the inner side below the second side frame; the sliding support seat drives the upper positioning pressing block and the lower positioning pressing block to move towards the end part close to the second side frame.

4. The chair covering process according to claim 1, characterized in that: in step S2, the supporting platform is in a U-shaped frame structure with a forward opening; the supporting platform comprises a supporting plate positioned at the bottom end in a horizontal manner and a mounting plate at the upper end; a containing groove which enables the frame main body to be horizontally embedded is formed between the supporting plate and the mounting plate; the positioning pressure plate is arranged in the accommodating groove in a lifting manner, and is positioned at the center of the supporting plate; the frame main body is horizontally placed in the accommodating groove, and the positioning pressure plate is pressed down on the frame main body to vertically position the frame main body.

5. The chair covering process of claim 4, wherein: the frame body is a seat frame which is provided with a horizontal seat supporting part used for being connected with the chassis; the frame main body is horizontally arranged in the accommodating groove to enable the supporting part of the supporting seat to be supported by the supporting plate; the positioning platen is then urged against the upper end of the seat support.

6. The chair covering process of claim 4, wherein: the frame positioning assembly also comprises a base, and the base is of an internal hollow structure; the supporting platform is connected to the bottom end of the base; still be equipped with the first lifting unit who is used for drive location pressure disk to go up and down in the base, first lifting unit is including the first lift electric jar of vertical setting, and the upper end and the base of this first lift electric jar are fixed to be continuous, and first lift electric jar has vertical flexible push rod down, and this first flexible push rod slides and wears to establish in the storage tank, and the lower extreme and the location pressure disk of first flexible push rod are connected.

7. The chair covering process according to claim 1, characterized in that: in the steps S2 and S3, the device comprises a frame, and an upper substrate and a lower substrate which are arranged on the frame, are spaced from each other at an upper position and a lower position and are horizontal; the frame body positioning assembly is arranged at the bottom end of the upper substrate, and the clamping, pressing and stretching assembly is arranged at the upper end of the lower substrate; and the clamping and pressing stretching net component and the frame main body positioning component are horizontally staggered.

8. The chair covering process of claim 7, wherein: in the steps S2 and S3, the sliding support seat is arranged along the front-back direction and can slide left and right along the lower substrate; the upper positioning pressing block is arranged at the upper end of the sliding support seat along the front-back direction, the lower positioning pressing block is arranged between the sliding support seat and the upper positioning pressing block along the front-back direction, and the lower positioning pressing block can be adjusted in a lifting mode relative to the sliding support seat.

9. The chair covering process of claim 8, wherein: the lower positioning pressing block is positioned right below the fixed pressing block; the bottom end of the lower positioning pressing block is provided with a slide bar which extends downwards and is slidably arranged in the slide support seat in a penetrating way.

10. The chair door screen process according to claim 8 or 9, characterized in that: the bottom end of the sliding support seat is provided with a second lifting electric cylinder for driving the lower positioning 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 lower positioning pressing block.

11. The chair covering process of claim 8, wherein: 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.

12. The chair door screen process according to claim 8 or 11, characterized in that: a hollow avoiding guide groove is arranged at the middle position 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.

13. The chair covering process of claim 8, wherein: 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 upper end of each supporting rod is provided with a socket through which the upper positioning pressing block can horizontally pass, and two ends of the upper positioning pressing block are respectively inserted into the sockets so that the upper positioning pressing block and the supporting rods are longitudinally fixed.

14. The chair covering process according to claim 1, characterized in that: the upper positioning pressing block and the lower positioning pressing block are both of metal structures.

15. The chair covering process according to claim 1, characterized in that: the support screen cloth adopts the rifle nail to be connected with first side frame and second side frame.