CN115385292A

CN115385292A - Screen cloth assembling process of seat frame body

Info

Publication number: CN115385292A
Application number: CN202211015755.XA
Authority: CN
Inventors: 金明华
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-11-25
Anticipated expiration: 2042-08-24
Also published as: CN115385292B

Abstract

The invention discloses a mesh assembly process of a seat frame body, which comprises the following steps: firstly, connecting a mesh part to a seat frame in advance; connecting the mesh cloth with the upper edge, the lower edge and the first side edge of one side of the seat frame; the second side edge of the other side of the seat frame body is not connected with the mesh temporarily; secondly, laterally installing the whole seat frame body in a tool clamp for assisting in closing a net, and enabling a second side edge of the seat frame body to be horizontally upward; the positioning clamping and pressing component positioned at the upper part of the tool clamp is used for horizontally and firmly clamping the screen cloth at the upper end; thirdly, the bottom end of the seat frame body is vertically positioned in a positioning supporting plate and a sinking plate of the positioning sinking assembly; the bottom end of the seat frame body is embedded in a supporting platform on the positioning supporting plate; fourthly, the positioning sinking assembly sinks to drive the seat frame body to sink relative to the mesh cloth at the upper end of the seat frame body; connecting the mesh cloth on the second side edge to complete the assembly of the mesh cloth; and step six, taking the seat frame out of the tool fixture.

Description

Screen cloth assembling process of seat frame body

Technical Field

The invention relates to the field of seats, in particular to a mesh assembling process of a seat frame body.

Background

At present, people have more and more use requirements on chairs, and various types of chairs are derived according to the requirements; such as leisure chairs, office chairs, dining chairs and the like; in addition to the function of sitting, the existing chairs also need to have unique appearance, ergonomic design, use of air-permeable materials, and comfort of leaning and lying. The net chair is one of the net chairs, and in order to improve air permeability and heat dissipation, save materials and reduce cost, a lot of chairs are formed by combining net cloth and a seat frame, and the chairs are collectively called as the net chair.

The net chair in the prior art mainly comprises a frame body and net cloth, wherein the net cloth is tightly wrapped on the frame body and is fixed on the frame body through a pressing strip, a fastening piece or a fastening piece; however, the assembly process of tightening and fixing the mesh cloth on the frame body is generally completed manually, and an operator needs to clamp, press and embed the edge of the mesh cloth inwards along the outer periphery of the frame body and fix the mesh cloth in 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. Specifically, the method comprises the following steps: the common seat frame body is provided with an upper end part, a lower end part, a left side part and a right side part which need to be connected with mesh cloth; in the connection process, the operation of the net is easy and labor-saving at the initial stage, and the net is basically in a loose state and can be easily connected with the seat frame body. However, with subsequent operations, when most of the mesh cloth is connected with the frame body, only the part on one side of the frame body needs to be connected with the mesh cloth; at the moment, the seat frame body is basically covered by the mesh cloth; the rest parts to be connected need operators to firstly take great effort to tighten the mesh cloth, and then the stretched parts are finally connected to the frame body; however, in one process, the operator must attach all of the remaining web at once, or if the operator only inserts a portion of the web and then releases the web, the attached web can easily fall out of the frame again under the force of its own tension. Therefore, an operator needs to pull the mesh cloth by one hand all the time, and the mesh cloth is connected with the frame body by the other hand through a tool; undoubtedly, the difficulty of high operation force and difficulty coefficient exists.

In addition, the quality of the chairs is difficult to control due to the limitation of the operation experience and the operation level of workers, the tightness degree of the net cloth wrapped by the frame body, the accurate wrapping and the like; in addition, if an operator holds the mesh cloth by hands to stretch the mesh cloth, the mesh cloth is stressed unevenly, and the mesh cloth is likely to be torn due to concentrated local stress; even if the operator successfully operates for several times, the hand is very sour due to the fact that the mesh cloth is tensioned with continuous effort, and the success rate of subsequent operation is reduced; the assembly efficiency is reduced.

Aiming at the problems, a mesh assembly process is continuously provided, and automatic or semi-automatic mesh connection can be realized; can solve the problem of net stretching and release the physical strength of the human body.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a mesh assembly process of a seat frame body; when a net is arranged on the seat frame body, the net cloth is connected with the seat frame body in advance, and only the second side edge is required to be connected with the net cloth; then, clamping the mesh cloth on the seat frame body close to the second side edge by using a tool clamp, wherein the tool clamp can drive the seat frame body to sink relative to the mesh cloth; the mesh cloth is correspondingly tensioned, and the upper end of the mesh cloth upwards exceeds the second side edge; the mesh cloth can be easily connected with the second side edge to complete the assembly of the mesh cloth; the mesh on the seat frame is clamped and stretched by the tool clamp, an operator does not need to manually stretch the mesh, and the problem that the most labor-consuming screen-closing operation is performed in the prior art is solved; therefore, labor of operators is greatly released, and the net closing efficiency of the seat frame is improved.

The technical scheme of the invention is realized as follows:

a mesh assembly process of a seat frame body comprises the following steps:

firstly, connecting a mesh part to a seat frame in advance; connecting the mesh cloth with the upper edge, the lower edge and the first side edge of one side of the seat frame; the second side edge of the other side of the seat frame body is not connected with the mesh temporarily;

step two, laterally installing the whole seat frame body in a tool clamp for assisting in net laying, and enabling a second side edge of the seat frame body to be horizontally upward; the bottom end of the seat frame body is supported by a positioning sinking component positioned at the lower part of the tool clamp; the positioning clamping and pressing assembly positioned at the upper part of the tool clamp is used for horizontally and firmly clamping the screen cloth close to the second side edge; the main positioning clamp plate, the first positioning clamp plate and the second positioning clamp plate of the positioning and clamping assembly clamp the mesh cloth to enable the side section contour of the mesh cloth to be matched with the side section contour of the seat frame body;

thirdly, the bottom end of the seat frame body is vertically positioned in a positioning supporting plate and a sinking plate of the positioning sinking assembly; the bottom end of the seat frame body is embedded in a supporting platform on the positioning supporting plate; the first lower pressing plate on the sinking plate above the supporting platform moves towards the seat frame body so as to vertically position the back side frame at the bottom of the seat frame body between the supporting platform and the first lower pressing plate; the second lower pressing plate on the sinking plate moves towards the seat frame body so as to vertically position the seat side frame at the bottom of the seat frame body between the supporting platform and the second lower pressing plate;

fourthly, the positioning sinking assembly sinks to drive the seat frame body to sink integrally, so that the second side edge of the seat frame body positioned at the upper end moves downwards relative to the mesh cloth at the upper end; the upper end of the mesh cloth can exceed the second side edge upwards;

connecting the mesh cloth positioned at the upper end to the second side edge of the seat frame body to complete the assembly of the mesh cloth;

taking out the seat frame from the tool fixture; the positioning clamping and pressing assembly loosens the screen cloth; the positioning sinking assembly is lifted and reset, and the first lower pressing plate and the second lower pressing plate respectively move and reset; the seat frame can be separated from the tool clamp.

Preferably, in the second and third steps, the tooling fixture comprises an upper base plate positioned right above the positioning sinking assembly, and a first avoidance groove which is hollowed and used for avoiding the lateral passing of the seat frame body is arranged on the upper base plate; the bottom end of the sinking plate is attached to the upper end of the supporting platform, and a second avoidance groove which is hollowed and exposes the supporting platform is formed in the sinking plate; the first avoidance groove, the second avoidance groove and the support platform are overlapped up and down; the seat frame body keeps the lateral side to sequentially pass through the first avoidance groove and the second avoidance groove from top to bottom and is embedded into the supporting platform. Therefore, the seat frame body can be conveniently installed in the tool fixture.

Preferably, the positioning and clamping assembly is arranged at the upper end of the upper base plate, and the main positioning clamping plate, the first positioning clamping plate and the second positioning clamping plate are enclosed at the first avoidance groove; the outer peripheral edge contour of the main positioning clamping plate at the first avoidance groove is matched with the side section contour of the seat frame body; the main positioning clamping plate is positioned on the outer periphery of the first avoidance groove and comprises a seat part blank pressing edge, a back blank pressing edge and an arc-shaped blank pressing edge formed between the seat part blank pressing edge and the back blank pressing edge. Design like this makes the outer peripheral edges of main positioning splint can just laminate mutually with the longitudinal section profile of screen cloth on the seat frame to tight screen cloth is pressed from both sides that can be stable, and makes tight tensile force of clamp everywhere even.

Preferably, the first positioning clamp plate is right opposite to one side of the back pressing edge of the main positioning clamp plate, the outer periphery of the first avoidance groove of the first positioning clamp plate is provided with a first pressing edge, and the contour of the first pressing edge is matched with the contour of the back pressing edge and the contour of the partial arc-shaped pressing edge. Make first location splint can with main location splint to closing the screen cloth level tight in order to be located the back with the seat frame body tightly.

Preferably, the second positioning clamp plate is right opposite to one side of the edge pressing of the seat part of the main positioning clamp plate, the second edge pressing is arranged on the outer periphery of the first avoidance groove of the second positioning clamp plate, and the outline of the second edge pressing is matched with the outline of the edge pressing of the seat part and the outline of the part of the arc-shaped edge pressing. Make the second location splint can with the main location splint involution press from both sides tightly in order to be located the screen cloth level clamp of seat portion with the seat framework tightly.

Preferably, the main positioning clamping plate, the first positioning clamping plate and the second positioning clamping plate are positioned at the same horizontal height; the main positioning clamp plate is detachably connected with the upper base plate; the first positioning clamp plate and the second positioning clamp plate are configured to be capable of horizontally sliding relative to the upper base plate. The first positioning clamp plate and the second positioning clamp plate can be far away from the main positioning clamp plate, so that the seat frame body can pass through the first avoidance groove; the first positioning clamp plate and the second positioning clamp plate are folded with the main positioning clamp plate to clamp the screen cloth, and the operation is convenient.

Preferably, the first positioning clamp plate is provided with a first push-pull assembly capable of driving the first positioning clamp plate to horizontally move, and the first push-pull assembly comprises a first push-pull electric cylinder arranged on the first positioning clamp plate; and the second positioning clamping plate is provided with a second push-pull assembly capable of driving the second positioning clamping plate to move horizontally, and the second push-pull assembly comprises a second push-pull electric cylinder arranged on the second positioning clamping plate. The first positioning clamping plate and the second positioning clamping plate can be stably driven to move by the first push-pull electric cylinder and the second push-pull electric cylinder, so that the device runs stably.

Preferably, the main positioning clamping plate, the first positioning clamping plate and the second positioning clamping plate are all made of metal plates. The clamping effect is good, and the structure is stable after clamping; when the seat frame body sinks, the mesh cloth can be stably tensioned.

Preferably, the support is provided at an upper end of the positioning pallet and protrudes upward, and the support is provided with a caulking groove into which the whole side end of the seat frame can be fitted. The lower end of the seat frame body is embedded into the embedded groove of the supporting table, the mesh cloth can be in press fit with the back side frame and the seat side frame of the lower end of the seat frame body, and then when the seat frame body sinks, the mesh cloth cannot be separated from the first side edge.

Preferably, in the third step, the outer peripheral edge contour of the first lower platen matches the contour of the back frame of the seat frame; a first pressing block protruding downwards is arranged at the end part of the first lower pressing plate along the outline of the outer periphery of the first lower pressing plate, and the first lower pressing plate moves towards the direction of the seat frame body so that the first pressing block is pressed on the upper end of the back side frame of the seat frame body; the outer peripheral edge contour of the second lower pressing plate is matched with the contour of a seat side frame of the seat frame body; a second pressing block protruding downwards is arranged at the end part of the second lower pressing plate along the outline of the outer periphery of the second lower pressing plate; the second lower pressing plate moves towards the seat frame body to enable the second pressing block to be pressed on the upper end of the seat side frame of the seat frame body. The seat frame body is clamped between the caulking groove and the first pressing block and the second pressing block, and the seat frame body is kept in a stable positioning state.

Preferably, the support table, the first pressing block and the second pressing block are all made of plastic materials. The bottom end of the seat frame body is positioned between the caulking groove of the supporting platform and the first pressing block and the second pressing block; because the seat frame body is usually made of plastic materials, and then the supporting platform, the first pressing block and the second pressing block are made of plastic materials, the seat frame body is prevented from being damaged when the seat frame body is positioned and pressed up and down.

Preferably, the first lower pressing plate is located right below the first positioning clamping plate, and the second lower pressing plate is located right below the second positioning clamping plate. When the seat frame moves downwards, the mesh cloth only receives stretching force in the longitudinal direction, and the stretching effect is better; and the clamping and stretching force applied to all positions of the mesh cloth is uniform and not easy to damage.

Preferably, the first lower pressing plate and the second lower pressing plate are both arranged at the upper end of the sinking plate in a sliding manner; and a first lower driving electric cylinder capable of driving the first lower pressing plate to horizontally slide and a second lower driving electric cylinder capable of driving the second lower pressing plate to horizontally slide are arranged on the sinking plate. The first lower pressing plate and the second lower pressing plate can be stably controlled to slide, and the operation is stable.

Preferably, the tooling clamp further comprises a supporting base positioned at the bottom, and the positioning sinking assembly and the upper base plate are sequentially arranged above the supporting base; a first lifting assembly is arranged between the upper base plate and the sinking plate; a second lifting assembly is arranged between the supporting base and the positioning supporting plate; in the fourth step and the sixth step, the first lifting assembly is configured to drive the sinking plate to sink and rise; the second lifting assembly is configured to enable the positioning support plate to descend along with the sinking plate and to drive the positioning support plate to ascend again for resetting.

Preferably, the first lifting assembly comprises hydraulic oil cylinders arranged on two sides of the upper base plate in a mirror image manner; the upper end of the hydraulic oil cylinder is fixedly connected with the upper base plate, and a piston rod of the hydraulic oil cylinder is vertically downwards connected with the sinking plate; the hydraulic cylinder is configured to drive the sinking plate to sink and rise. The hydraulic oil cylinder is adopted, so that the sinking plate can be stably driven to move up and down relative to the upper base plate; and the load is high.

Preferably, the second lifting assembly comprises a cylinder arranged on the supporting base; the air rod at the upper end of each air cylinder is connected to the bottom of the positioning supporting plate; the cylinder is configured to enable the positioning supporting plate to descend along with the sinking plate and to drive the positioning supporting plate to ascend and reset again. When the sinking plate sinks, the first lower pressing plate and the second lower pressing plate are pressed downwards together to act on the seat frame body, and a downward acting force is applied to the positioning supporting plate; so that the air rod contracts correspondingly; and when the sinking plate rises, the air rod can reset to drive the positioning supporting plate to rise again for resetting.

Preferably, longitudinal support guide rods are respectively arranged on the periphery of the support base, penetrate through the sinking plate and are connected to the upper base plate, and the support guide rods are configured to support the upper base plate; and the sinking plate is in sliding fit with the supporting guide rod. So that the sinking plate can stably move up and down relative to the upper base plate.

Preferably, the support base is further provided with a slide rod which is upwards sequentially arranged on the positioning support plate and the sinking plate in a penetrating mode, and the positioning support plate can stably and longitudinally slide along the slide rod. So that the positioning supporting plate can stably slide up and down.

Preferably, the seat frame has a sinking distance of between 2 and 15 cm.

Further, the sinking distance of the seat frame body is between 5 and 10 cm.

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

1. according to the mesh assembly process of the seat frame, when the mesh closing operation is performed on the seat frame; an operator connects the mesh cloth with the upper edge, the lower edge and the first side edge of the seat frame in advance, so that only the second side edge is required to be connected with the mesh cloth; the screen cloth still need not to be taut with the screen cloth with seat framework complete connection this moment for this step operation is comparatively light. Then the seat frame body is arranged in the working clamp, and the second side edge is horizontally upward; the seat frame body is clamped firmly by the tool fixture, the mesh close to the second side edge is clamped firmly, and the positioning sinking assembly can drive the seat frame body to sink integrally relative to the upper end of the mesh; the mesh cloth is correspondingly tensioned, and the upper end of the mesh cloth is upwards beyond the second side edge; then, an operator can easily connect the upper end of the mesh cloth with the second side edge to complete the assembly of the mesh cloth; the mesh on the seat frame body is clamped and stretched through the tool clamp, so that an operator does not need to manually stretch the mesh, and the problem that the most labor-consuming net holding operation is performed in the prior art is solved; thereby greatly releasing the physical strength of operators and effectively improving the net closing efficiency of the seat frame body.

2. The outer peripheral edge contour of the main positioning clamp plate at the first avoidance groove is matched with the side section contour of the seat frame body, so that the main positioning clamp plate, the first positioning clamp plate and the second positioning clamp plate can stably and horizontally clamp the mesh cloth; and the stretching force that the screen cloth received everywhere is even, can not damage the screen cloth.

3, the bottom end of the seat frame body is embedded into the embedding groove of the supporting table, so that the mesh cloth is in press fit with the back side frame and the seat side frame at the bottom end of the seat frame body, and the mesh cloth cannot be separated from the first side edge when the seat frame body sinks; the bottom end of the seat frame body is positioned and clamped between the caulking groove and the first pressing block and the second pressing block, so that the seat frame body is kept in a stable positioning state; so that the seat frame body can stably move and can not swing and deviate in the sinking process.

4, arranging a cylinder between the supporting base and the positioning supporting plate; when the sinking plate sinks, the first lower pressing plate and the second lower pressing plate are pressed downwards together to act on the seat frame body, downward acting force is applied to the positioning support plate, and therefore the air rod correspondingly shrinks, and the positioning support plate can correspondingly sink. When the sinking plate rises, the air rod can reset to drive the positioning supporting plate to rise again for resetting; the structure is simple and reliable.

Drawings

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

FIG. 2 is a schematic perspective view of a mesh pre-assembled with a seat frame according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a seat frame ready to be placed in a tooling fixture in an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a seat frame installed in a tooling fixture according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a seat frame sinking in the embodiment of the present invention;

FIG. 6 is a schematic perspective view of an embodiment of the present invention for attaching a mesh to a second side edge of a seat frame

FIG. 7 is a schematic perspective view of a tooling fixture according to an embodiment of the present invention;

FIG. 8 is a top view of a tooling fixture in an embodiment of the present invention;

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

FIG. 10 is a side view of a tooling fixture in an embodiment of the present invention;

FIG. 11 is a schematic perspective view of the seat frame being inserted into the recessed slot according to an embodiment of the present invention;

FIG. 12 is a schematic perspective view of the seat frame compressed by the first and second pressing blocks according to the embodiment of the present invention;

FIG. 13 is a schematic perspective view of a sinking plate according to an embodiment of the present invention;

fig. 14 is a schematic perspective view of a positioning pallet according to an embodiment of the present invention.

The figures are numbered: a seat frame a; an upper edge a1; a lower edge a2; a first side edge a3; a second side edge a4; a back frame a01; a seat side frame a02; b, screen cloth; a tooling clamp A; an upper substrate 1; positioning the sinking assembly 2; a support base 3; a first avoidance slot 4; a main positioning splint 5; a mounting base 501; a seat blank pressing edge 5a; back side pressing 5b; an arc-shaped edge pressing 5c; a first positioning splint 6; a second blank holder 6a; a first push-pull electric cylinder 6b; a second positioning splint 7; a second pressing edge 7a; a second electric push rod 7b; a first slide rail 8; a first fixed seat 9; a second slide rail 10; a second fixed seat 11; a sinking plate 12; a positioning pallet 13; a pallet 14; a caulking groove 15; a first avoidance slot 16; a support guide 17; a hydraulic ram 18; a first lower platen 19; a second lower platen 20; a first lower driving electric cylinder 21; a second lower driving electric cylinder 22; a first pressing block 23; a second compact 24; a slide bar 25; a cylinder 26; and an air rod 26a.

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 otherwise than as 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. 1-14, the present invention provides a mesh fabric assembly process for a seat frame; the process is used for connecting the seat frame body a with the mesh cloth b; so that the assembly process of the screen cloth b is easy and labor-saving. Specifically, the method comprises the following steps: the assembly process comprises the following steps:

step one, as shown in fig. 1-2, a mesh b part is connected to a seat frame body a in advance; the seat frame body a is provided with an upper edge a1 positioned at the upper end of the seat back, a lower edge a2 positioned at the front end of the seat, and a first side edge a3 and a second side edge a4 which are respectively positioned at the left side and the right side; and caulking grooves (the conventional method in the prior art) for facilitating the embedding and connection of the mesh cloth b are arranged on the upper edge a1, the lower edge a2, the first side edge a3 and the second side edge a 4. An operator manually connects the mesh cloth b with the upper edge a1, the lower edge a2 and the first side edge a3 of the seat frame body a in advance, so that the mesh cloth b is not connected with the rest of the second side edge a2 of the seat frame body a; in the connection process, the mesh cloth b is not completely connected with the seat frame body a at the moment, and the mesh cloth b is not in a tightened state; and then the operation is easier and labor-saving, and the operator can easily complete the step.

And step two, the seat frame body a is arranged in a tool clamp for assisting net closing in a lateral state, and the second side edge a4 of the seat frame body a is horizontally upward.

Specifically, the method comprises the following steps: as shown in fig. 3, 4, and 7-14, an auxiliary closing net is then performed by a tool fixture a; from top to bottom, the tooling fixture A sequentially comprises an upper base plate 1, a positioning sinking component 2 and a supporting base 3 which are spaced up and down; after the seat frame body a is installed in the working fixture, the bottom end of the seat frame body a is supported by the positioning sinking component 2. The upper substrate 1 is provided with a hollow L-shaped first avoiding groove 4 for avoiding the seat frame body a and a positioning clamping and pressing assembly. The first avoiding groove 4 is located at the center of the upper substrate 1, and as shown in fig. 8 and 9, the first avoiding groove 4 is configured to allow the seat frame a to laterally pass through the upper substrate 1; the positioning clamping and pressing assembly comprises a horizontal main positioning clamping plate 5, a first positioning clamping plate 6 and a second positioning clamping plate 7 which surround the first avoidance groove 4; and the positioning and clamping assembly is configured to: after the seat frame body a is installed in the tool clamp A, the positioning clamping and pressing assembly can clamp the mesh cloth b on the seat frame body a firmly along the horizontal direction; specifically, the method comprises the following steps: the upper substrate 1 is of a rectangular structure, a mounting base 501 is arranged in the middle of the long edge of one side of the upper substrate 1, and the main positioning clamp plate 5 is detachably mounted on the mounting base 501; the outer peripheral edge contour of the main positioning splint 5 at the first avoidance groove 4 is matched with the side section contour of the seat frame a; the main positioning clamping plate 5 is positioned in the first avoiding groove 4, the outer periphery comprises a seat part blank pressing edge 5a, a back part blank pressing edge 5b and an arc-shaped blank pressing edge 5c formed between the seat part blank pressing edge 5a and the back part blank pressing edge 5b, and the seat part blank pressing edge 5a and the back part blank pressing edge 5b tend to be vertical; as shown in fig. 4, the outer peripheral edge of the main clamp 5 is designed to fit the longitudinal cross-sectional profile of the mesh fabric b of the seat frame a. Further, the following steps are carried out: first location splint 6 just to main location splint 5 back blank pressing 5b one side, first location splint 6 is located the first peripheral edges of dodging groove 4 department and has first blank pressing 6a, the profile and the back blank pressing 5b of this first blank pressing 6a and the profile phase-match of part arc blank pressing 5 c. Correspondingly, the second positioning clamp 7 is opposite to the seat blank pressing edge 5a side of the main positioning clamp 5, the second blank pressing edge 7a is arranged on the outer peripheral edge of the first avoidance groove 4 of the second positioning clamp 7, and the outline of the second blank pressing edge 7a is matched with the outline of the seat blank pressing edge 5a and the outline of the partial arc-shaped blank pressing edge 5 c. The three can be relatively attached together; and the main positioning clamp plate 5, the first positioning clamp plate 6 and the second positioning clamp plate 7 are all of metal plate-shaped structures, so that the structure strength is high, and the pressing effect is good.

In addition, the first positioning clamp plate 6 and the second positioning clamp plate 7 are respectively in sliding fit with the upper base plate 1; specifically, the method comprises the following steps: a first slide rail 8 is arranged below the first positioning clamp plate 6 of the upper base plate 1, and the first positioning clamp plate 6 is arranged on the first slide rail 8 in a sliding manner; be equipped with first push-and-pull subassembly on first locating splint 6, this first push-and-pull subassembly is including installing first push-and-pull electric jar 6b on first locating splint 6 and setting up the first fixing base 9 on upper substrate 1, and the push rod on the first push-and-pull electric jar 6b is connected on first fixing base 9, and then first push-and-pull electric jar 6b can drive first locating splint 6 and slide along first slide rail 8. Similarly, a second slide rail 10 connected with the second positioning splint 7 in a sliding manner is arranged below the second positioning splint 7 on the upper substrate 1, a second push-pull assembly is arranged on the second positioning splint 7, the second push-pull assembly comprises a second push-pull electric cylinder 7b arranged on the second positioning splint 7 and a second fixed seat 11 arranged on the upper substrate 1, and a push rod on the second push-pull electric cylinder 7b is connected to the second fixed seat 11; and then the second push-pull electric cylinder 7b can drive the second positioning clamp plate 7 to slide along the second slide rail 10. The main positioning splint 5, the first positioning splint 6 and the second positioning splint 7 are positioned at the same horizontal height; then the first positioning clamp plate 6 and the second positioning clamp plate 7 are initially far away from the main positioning clamp plate 5, so that the seat frame body a can laterally pass through the first avoidance groove 4; after the seat frame body a is placed; the first positioning clamp plate 6 and the second positioning clamp plate 7 can respectively move towards the main positioning clamp plate 5, so that the first pressing edge 6a and the second pressing edge 7a are respectively pressed against the main positioning clamp plate 5, and the mesh cloth b on the seat frame body 1 can be firmly clamped and fixed; and the side section contour of the mesh cloth b is matched with the side section contour of the seat frame body. Further, the main positioning clamp 5 is detachably connected to the mounting base 501, and in order to allow the seat frame a to better pass through the first escape groove 4, it is also conceivable to first detach the main positioning clamp 5, and then attach the main positioning clamp 5 after the seat frame 1 is placed.

In the second step, the seat frame body a is installed in the tool fixture A, so that the bottom end of the seat frame body a is supported by the positioning sinking component 2; the positioning and clamping assembly 2 on the upper substrate 1 clamps the mesh cloth b below the second side edge a4 horizontally.

And step three, vertically positioning the bottom end of the seat frame body a in the positioning sinking assembly 2. Specifically, the method comprises the following steps: as shown in fig. 7-14: the positioning sinking assembly 2 is positioned right below the upper base plate 1, and the positioning sinking assembly 2 comprises a sinking plate 12 and a positioning supporting plate 13 which are arranged vertically and adjacently; wherein the sinking plate 5 is positioned above the positioning supporting plate 6; as shown in fig. 14, a saddle 14 protruding upward is provided at the middle position of the positioning pallet 6, a caulking groove 15 matching the contour of the side end of the seat frame a is provided on the saddle 14, and when the seat frame a is mounted in the tool fixture a as shown in fig. 4, the side portion of the seat frame a at the bottom end can be just inserted into the caulking groove 15, so that the bottom end of the seat frame a is tightly combined with the saddle 14. The bottom surface of the sinking plate 12 is attached to the upper end surface of the supporting platform 14, and a second avoidance groove 16 for avoiding the seat frame a to pass through is also arranged at the center of the sinking plate 12, and the second avoidance groove 16 just exposes the supporting platform 14; the first avoidance groove 4, the second avoidance groove 16 and the saddle 14 are overlapped up and down, and then the seat frame body a can sequentially penetrate through the upper base plate 1 and the sinking plate 12 from top to bottom during installation, so that the bottom of the seat frame body a is embedded into the caulking groove 15.

As shown in fig. 11-13, a first lower pressing plate 19 and a second lower pressing plate 20 capable of sliding horizontally are arranged on the upper end surface of the sinking plate 12; the first lower pressing plate 19 is positioned right below the first positioning clamping plate 6, and the second lower pressing plate 20 is positioned right below the second positioning clamping plate 7; the first lower pressing plate 19 is arranged on the sinking plate 12 in a sliding manner, and a first lower driving electric cylinder 21 capable of driving the first lower pressing plate 19 to slide is arranged on the sinking plate 12; correspondingly, the second lower pressing plate 20 is also slidably disposed on the sinking plate 12, and the sinking plate 12 is provided with a second lower driving electric cylinder 22 capable of driving the second lower pressing plate 20 to slide. Furthermore, the outer peripheral contour of the first lower pressing plate 19 is matched with the contour of the first pressing edge 6a, and a first pressing block 23 which protrudes downwards is arranged at the end part of the first lower pressing plate 19 along the outer peripheral contour of the first lower pressing plate 19; the outer peripheral contour of the second lower pressing plate 20 matches the contour of the second pressing edge 7a, and a second pressing block 24 protruding downward is provided at the end of the second lower pressing plate 20 along the outer peripheral contour of the second lower pressing plate 20. As shown in fig. 11, when the seat frame a is initially installed, the first lower pressing plate 19 and the second lower pressing plate 20 are both away from the second avoiding groove 16, so that the seat frame a can pass through the second avoiding groove 16 and be inserted into the lower insertion groove 15. The seat frame body a is provided with a back side frame a01 and a seat side frame a02 on any side; after the second step, that is, in the third step, the first lower pressing plate 19 is moved toward the seat frame a, so that the first pressing plate 23 is pressed against the upper end of the back-side frame a01 of the seat frame a on the first side edge 1a side; the second lower pressure block 20 is also moved toward the seat frame a so that the second pressure block 24 is also pressed against the upper end of the seat side frame a02 at the bottom end of the seat frame a; thus, the bottom end of the seat frame a is positioned on the pallet 14 up and down at this time, and the seat frame a is in a stable posture and does not shake. And the bottom end of the seat frame body a is embedded into the embedding groove 15 of the support table 14, so that the mesh cloth b is in press fit with the back side frame a01 and the seat side frame a02 at the lower end of the seat frame body a, and the mesh cloth b cannot be separated from the first side edge a3. Moreover, the supporting platform 14, the first pressing block 23 and the second pressing block 24 are all made of plastic materials; since the bottom end of the seat frame a is positioned between the saddle 14 and the first pressing block 23 and the second pressing block 24; because the seat frame body a is also made of plastic, the supporting platform 14, the first pressing block 23 and the second pressing block 24 are made of plastic, the seat frame body a can be prevented from being damaged when the seat frame body a is positioned and pressed up and down, and the design is more comprehensive.

Fourthly, after the mesh cloth b at the upper end of the seat frame body a is clamped and the bottom end of the seat frame body a is positioned on the supporting table 14 through the first pressing block 23 and the second pressing block 24; and then the positioning sinking assembly 2 sinks to drive the seat frame body a to sink integrally, so that the second side edge a4 of the seat frame body a at the upper end moves downwards relative to the mesh cloth b at the upper end of the positioning clamping and pressing assembly.

Specifically, the method comprises the following steps: longitudinal support guide rods 17 are respectively arranged on the periphery of the support base 3, the support guide rods 17 penetrate through the sinking plate 12 and are connected to the upper substrate 1, and the support guide rods 17 can stably support the upper substrate 1; the sinking plate 12 is in sliding fit with the support guide rod 17, a first lifting assembly is arranged between the sinking plate 12 and the upper base plate 1 and comprises hydraulic oil cylinders 18 arranged at two sides in a mirror image mode, the upper ends of the hydraulic oil cylinders 18 are arranged at the bottom end of the upper base plate 1, piston rods 18a of the hydraulic oil cylinders 18 face downwards vertically, the piston rods 18a are connected to the sinking plate 12, and then the sinking plate 12 can be stably driven to ascend or descend under the driving action of the hydraulic oil cylinders 18; the hydraulic oil cylinder 18 is adopted, so that the sinking plate 12 can be stably driven to move up and down relative to the upper base plate 1; and the load is high, so that the clamp structure is stable. A slide rod 25 is further arranged on the supporting base 3 and sequentially penetrates through the positioning supporting plate 13 and the sinking plate 12 upwards, and the positioning supporting plate 13 can stably and longitudinally slide along the slide rod 25; the supporting base 3 is also provided with an air cylinder 26 for supporting the positioning supporting plate 13, and an air rod 26a at the upper end of the air rod 26 is connected to the bottom of the positioning supporting plate 13; so that the location plate 13 can be lowered or raised by the air rod 26.

Then in the fourth step, the hydraulic oil cylinder 18 drives the sinking plate 12 to sink for a certain distance; correspondingly, the first pressing block 23 and the second pressing block 24 can press down and act on the seat frame a, so that the positioning support plate 13 is stressed and acts on the air rod 26a downwards to contract, the positioning support plate 13 descends synchronously, and the seat frame a descends along with the positioning support plate 13; since the upper end of the mesh cloth b is clamped firmly, the second side edge a4 of the upper end of the seat frame a moves downwards relative to the mesh cloth b of the upper end, so that the upper end of the mesh cloth b exceeds the second side edge a4 upwards as shown in fig. 5; at the moment, the mesh cloth b is correspondingly tensioned; specifically, the method comprises the following steps: in the process, the sinking distance of the seat frame body a is between 2 and 15cm, in particular 5cm.

Step five, then, an operator connects the mesh cloth b positioned at the upper end to the second side edge a4 of the seat frame body a; so that the mesh cloth b is completely connected with the seat frame body a. In the step, the mesh cloth b is stretched upwards relative to the seat frame body a, so that the mesh cloth b can be easily connected with the second side edge a4 of the seat frame body a, and the connection of an operator is very convenient and labor-saving; the mesh b does not need to be stretched by an operator as in the prior art.

Step six, finally, the first positioning clamp plate 6 and the second positioning clamp plate 7 move and reset to loosen the mesh cloth b, and the mesh cloth b can be naturally tightened on the seat frame body a; the hydraulic oil cylinder 18 drives the sinking plate 12 to ascend again, and the positioning supporting plate 13 also moves upwards again to reset under the action of the air cylinder 26; the first lower pressing plate 19 and the second lower pressing plate 20 move and reset, so that the first pressing block 23 and the second pressing block 24 leave the seat frame body a; then, the operator only needs to take out the seat frame body a from the clamp, and the mesh cloth b is connected to the seat frame body a in a tightening manner.

Therefore, the auxiliary seat frame body a is connected with the screen cloth b by the tool clamp A, so that an operator does not need to stretch the screen cloth b, the tool clamp A can stably clamp and stretch the screen cloth b, the stretching force is uniform, the screen-touching operation is very easy, and the problem that the most laborious screen-touching operation is needed in the prior art is solved; therefore, labor of operators is greatly released, and the net closing efficiency of the seat frame body a is improved.

Claims

1. The utility model provides a screen cloth assembly process of seat frame body which characterized in that: the method comprises the following steps:

secondly, laterally installing the whole seat frame body in a tool clamp for assisting in closing a net, and enabling a second side edge of the seat frame body to be horizontally upward; the bottom end of the seat frame body is supported by a positioning sinking component positioned at the lower part of the tool clamp; the positioning clamping and pressing assembly positioned at the upper part of the tool clamp is used for horizontally and firmly clamping the screen cloth close to the second side edge; the main positioning clamp plate, the first positioning clamp plate and the second positioning clamp plate of the positioning and clamping assembly clamp the mesh cloth to enable the side section contour of the mesh cloth to be matched with the side section contour of the seat frame body;

fourthly, the positioning sinking assembly sinks to drive the seat frame body to sink integrally, so that the second side edge of the upper end of the seat frame body moves downwards relative to the mesh cloth at the upper end; the upper end of the mesh cloth can exceed the second side edge upwards;

step six, taking the seat frame out of the tool fixture; the positioning clamping and pressing assembly loosens the screen cloth; the positioning sinking assembly is lifted and reset, and the first lower pressing plate and the second lower pressing plate respectively move and reset; the seat frame can be separated from the tool clamp.

2. The seat frame mesh assembly process according to claim 1, wherein: in the second and third steps, the tooling fixture comprises an upper base plate which is positioned right above the positioning sinking assembly, and a first hollow avoiding groove which is used for avoiding the lateral passing of the seat frame body is arranged on the upper base plate; the bottom end of the sinking plate is attached to the upper end of the supporting platform, and a second avoidance groove which is hollowed and exposes the supporting platform is formed in the sinking plate; the first avoidance groove, the second avoidance groove and the support platform are overlapped up and down; the seat frame body keeps the lateral direction to sequentially pass through the first avoidance groove and the second avoidance groove from top to bottom and is embedded in the supporting platform.

3. The seat frame mesh assembly process according to claim 2, wherein: the positioning clamping and pressing assembly is arranged at the upper end of the upper base plate, and the main positioning clamping plate, the first positioning clamping plate and the second positioning clamping plate are enclosed at the first avoidance groove; the outer peripheral edge contour of the main positioning clamping plate at the first avoidance groove is matched with the side section contour of the seat frame body; the main positioning clamping plate is positioned on the outer periphery of the first avoidance groove and comprises a seat part blank pressing edge, a back blank pressing edge and an arc-shaped blank pressing edge formed between the seat part blank pressing edge and the back blank pressing edge.

4. The seat frame mesh assembly process according to claim 3, wherein: the first positioning clamping plate is right opposite to one side of the back blank pressing of the main positioning clamping plate, the first positioning clamping plate is positioned at the first outer peripheral edge of the avoidance groove and provided with a first blank pressing, and the outline of the first blank pressing is matched with the outline of the back blank pressing and the outline of the partial arc blank pressing.

5. The seat frame mesh assembling process according to claim 3, wherein: the second positioning clamping plate is right opposite to one side of the seat part blank pressing of the main positioning clamping plate, the second blank pressing is arranged on the outer peripheral edge of the first avoidance groove of the second positioning clamping plate, and the outline of the second blank pressing is matched with the outline of the seat part blank pressing and the outline of the partial arc-shaped blank pressing.

6. The seat frame mesh assembling process according to claim 2, wherein: the main positioning clamping plate, the first positioning clamping plate and the second positioning clamping plate are positioned at the same horizontal height; the main positioning clamping plate is detachably connected with the upper base plate; the first positioning clamp plate and the second positioning clamp plate are configured to be capable of horizontally sliding relative to the upper base plate.

7. The seat frame mesh assembly process according to claim 6, wherein: the first positioning clamping plate is provided with a first push-pull assembly capable of driving the first positioning clamping plate to horizontally move, and the first push-pull assembly comprises a first push-pull electric cylinder arranged on the first positioning clamping plate; and the second push-pull assembly comprises a second push-pull electric cylinder arranged on the second positioning clamping plate.

8. The seat frame mesh assembling process according to claim 1, wherein: the main positioning clamping plate, the first positioning clamping plate and the second positioning clamping plate are all metal plates.

9. The seat frame mesh assembling process according to claim 2, wherein: the support table is arranged at the upper end of the positioning support plate and protrudes upwards, and an embedded groove capable of enabling the side end of the seat frame body to be integrally embedded is formed in the support table.

10. The seat frame mesh assembly process according to claim 1, wherein: in the third step, the outer peripheral edge contour of the first lower pressing plate is matched with the contour of a back side frame of the seat frame body; a first pressing block protruding downwards is arranged at the end part of the first lower pressing plate along the outer peripheral edge contour of the first lower pressing plate, and the first lower pressing plate moves towards the seat frame body to enable the first pressing block to be pressed on the upper end of the back side frame of the seat frame body; the outer peripheral edge contour of the second lower pressing plate is matched with the contour of a seat side frame of the seat frame body; a second pressing block protruding downwards is arranged at the end part of the second lower pressing plate along the outline of the outer periphery of the second lower pressing plate; the second lower pressing plate moves towards the seat frame body to enable the second pressing block to be pressed on the upper end of the seat side frame of the seat frame body.

11. The seat frame mesh assembly process of claim 10, wherein: the support platform, the first pressing block and the second pressing block are all made of plastic materials.

12. The seat frame mesh assembly process according to claim 10, wherein: the first lower pressing plate is located under the first positioning clamping plate, and the second lower pressing plate is located under the second positioning clamping plate.

13. The seat frame mesh assembly process of claim 10, wherein: the first lower pressing plate and the second lower pressing plate are arranged at the upper end of the sinking plate in a sliding manner; and a first lower driving electric cylinder capable of driving the first lower pressing plate to horizontally slide and a second lower driving electric cylinder capable of driving the second lower pressing plate to horizontally slide are arranged on the sinking plate.

14. The seat frame mesh assembling process according to claim 2, wherein: the fixture clamp also comprises a support base positioned at the bottom, and the positioning sinking assembly and the upper substrate are sequentially arranged above the support base; a first lifting assembly is arranged between the upper base plate and the sinking plate; a second lifting assembly is arranged between the supporting base and the positioning supporting plate; in the fourth step and the sixth step, the first lifting assembly is configured to drive the sinking plate to sink and rise; the second lifting assembly is configured to enable the positioning supporting plate to descend along with the sinking plate and to drive the positioning supporting plate to ascend and reset again.

15. The seat frame mesh assembly process of claim 14, wherein: the first lifting assembly comprises hydraulic oil cylinders which are arranged on two sides of the upper base plate in a mirror image manner; the upper end of the hydraulic oil cylinder is fixedly connected with the upper base plate, and a piston rod of the hydraulic oil cylinder is vertically downwards connected with the sinking plate; the hydraulic cylinder is configured to drive the sinking plate to sink and rise.

16. The seat frame mesh assembly process of claim 14, wherein: the second lifting assembly comprises a cylinder arranged on the supporting base; the air rod at the upper end of each air cylinder is connected to the bottom of the positioning supporting plate; the cylinder is configured to enable the positioning supporting plate to descend along with the sinking plate and to drive the positioning supporting plate to ascend again for resetting.

17. The seat frame mesh assembly process of claim 14, wherein: longitudinal support guide rods are respectively arranged on the periphery of the support base, penetrate through the sinking plate and are connected to the upper base plate, and the support guide rods are configured to support the upper base plate; and the sinking plate is in sliding fit with the supporting guide rod.

18. The seat frame mesh assembly process of claim 14, wherein: the support base on still be equipped with upwards wear to establish the slide bar on location layer board and the board that sinks in proper order, the location layer board can be followed the stable vertical slip of this slide bar.

19. The seat frame mesh assembly process according to claim 1, wherein: the sinking distance of the seat frame body is between 2 and 15 cm.

20. The seat frame mesh assembly process of claim 19, wherein: the sinking distance of the seat frame body is between 5 and 10 cm.