A chair and a method for installing fabric on the chair frame

Abstract

The present invention discloses a fabric installation method for a chair and a chair frame thereof, wherein the fabric installation device for the chair frame comprises a frame and a workbench arranged on the frame; two stretching assemblies and two pressing assemblies are arranged on the workbench; the two stretching assemblies are respectively located at the left half and the right half of the workbench, and the two pressing assemblies are respectively located at the left half and the right half of the workbench; the stretching assembly is located in front of the pressing assembly; the stretching assembly comprises a bracket, a stretching member and a first cylinder for driving the stretching member to move, the bracket is fixedly mounted on the workbench, the first cylinder is fixedly mounted on the upper half of the bracket, the pressing assembly comprises a pressing member and a second cylinder for driving the pressing member to move, and the second cylinder is fixedly mounted on the workbench; through the technical solution, only one operator is required to complete the pressing of the chair frame, the tightening of the fabric and the installation of the fabric, thereby greatly improving the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of chairs, and in particular to a method for installing fabric of a chair and a chair frame thereof. Background Art

[0002] During the production process of chairs, the cut fabrics need to be nailed to the backrest or seat cushion of the chair with nail guns. Most furniture manufacturers now still use manual nailing, which is not only inefficient but also prone to errors in the position of nails, affecting the overall image of the chair. In addition, when wrapping the chair, the position of the fabric is not accurately controlled and is easily twisted and nailed by workers. If the deviation is large, rework is required, especially for leather fabrics, which results in high cost losses.

[0003] Therefore, a Chinese patent document with publication number CN208755439U discloses a chair back cover auxiliary device, comprising a base, a chair back bracket is arranged above the base, and a number of evenly distributed fixing clips are arranged on both sides of the chair back bracket, the fixing clip comprises a handle, a rotating shaft, a clip, and a limiting ring, the rotating shaft passes through the connection between the handle and the clip, the rotating shaft is connected to the chair back bracket through the fixing clip bracket, a washer is provided at the connection between the handle and the rotating shaft, the washer is sleeved on the rotating shaft, the limiting ring washer and the limiting ring are coaxially arranged, the limiting ring is in the shape of a circular ring, one side of the circular ring is a plane, and the other side is a curved surface with one end high and the other end low, the curved surfaces are smoothly connected, the clip is in the shape of an arc with a central angle of 90°, and a rubber block is provided on the inner circle of the clip. The utility model can accurately fix the position of the chair back and the chair back wrapping fabric, which is convenient for workers to nail with a nail gun, thereby improving product quality and work efficiency.

[0004] However, technicians in this field have found that the above device also has the following disadvantages during use:

[0005] 1) The chair frame generally has a certain elasticity. At the same time, in order to ensure the tightness of the fabric, when the fabric is fixed by nailing with a nail gun, the chair frame needs to be subjected to a large external force to make the chair frame in a compressed and tightened state. The above device does not take this into account, that is, the fabric cannot be tightened, so that during the use of the chair, the fabric is very likely to wrinkle and the elasticity of the fabric is reduced;

[0006] 2) Since the size of the above device is fixed, it can only assist the nail gun nailing operation of the fabric for the same chair frame;

[0007] 3) The crossbeam near the headrest fixing portion in the above device will seriously hinder the nailing operation of the nail gun on this part of the chair frame;

[0008] 4) When nailing the fabric of the chair frame by the above device, the part of the chair frame farthest from people exceeds the length of people's arms, making it impossible for people to stand in one place to complete all the nailing operations on the fabric;

[0009] 5) The above device can only clamp and fix the fabric, but cannot fix the chair frame. Therefore, when nailing the fabric with a nail gun, the movement of the chair frame still causes problems such as inaccurate fabric position control. Summary of the invention

[0010] In order to solve the above problems, the purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for installing fabric on a chair and its chair frame. Through this method, only one operator is needed to complete the pressing of the chair frame, the tightening of the fabric and the installation of the fabric, thereby greatly improving work efficiency.

[0011] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0012] A method for installing fabric on a chair frame, characterized in that the fabric installation device for the chair frame is used to complete the installation of the fabric on the chair frame, the fabric installation device for the chair frame comprises a frame and a workbench arranged on the frame; two stretching assemblies and two pressing assemblies are arranged on the workbench; the two stretching assemblies are respectively located on the left half and the right half of the workbench, and the two pressing assemblies are respectively located on the left half and the right half of the workbench; the stretching assembly is located in front of the pressing assembly;

[0013] The stretching assembly includes a bracket, a stretching member, and a first cylinder for driving the stretching member to move, the bracket is fixedly mounted on a workbench, the first cylinder is fixedly mounted on the upper half of the bracket, the pressing assembly includes a pressing member and a second cylinder for driving the pressing member to move, the second cylinder is fixedly mounted on the workbench;

[0014] The specific steps are as follows:

[0015] Step 1: Install the wire rope on the fabric and make a circle along the edge of the fabric;

[0016] Step 2: Place the chair frame on the workbench between the two clamping components, and then preliminarily fix the fabric on the chair frame so that both ends of the steel wire rope in the fabric are located at the front side of the chair frame;

[0017] Step 3: The two second cylinders drive the two pressing members to move toward each other to press the left and right sides of the chair frame and force the chair frame to be pre-deformed;

[0018] Step 4: The two first cylinders are used to drive the two stretching members to move toward each other, and then the two ends of the crossed steel wire rope are respectively installed on the two stretching members, and then the two first cylinders drive the two stretching members to return along the original path to stretch the steel wire rope so that the steel wire rope and the fabric are tightly attached to the periphery of the chair frame and are in a taut state;

[0019] Step 5: Use a nail gun to fix the fabric on the chair frame;

[0020] Step 6: Remove both ends of the wire rope from the tension piece, and then fix both ends of the wire rope to the chair frame;

[0021] Step 7: The two second cylinders drive the two clamping parts back along the original path, and then take the chair frame out of the workbench.

[0022] Preferably, both ends of the steel wire rope are provided with a blocking part, the blocking part is a cylinder or a sphere, the diameter of the blocking part is larger than the diameter of the steel wire rope, the stretching member is provided with a first stretching part and a second stretching part, a gap is provided between the first stretching part and the second stretching part, the width of the gap is larger than the diameter of the steel wire rope and smaller than the diameter of the blocking part, after the steel wire rope passes through the gap and the blocking part abuts against the first stretching part and the second stretching part, the two first cylinders drive the two stretching members to return along the original path to pull the steel wire rope.

[0023] Preferably, the steps for installing the wire rope on the fabric are as follows:

[0024] First, fix the cloth tape on the front side of the fabric by sewing the tape with sewing machine thread and make a circle along the edge of the fabric. At this time, the sewing thread of the sewing machine forms the first sewing loop on the cloth tape.

[0025] The steel wire rope is then placed on the fabric tape and located outside the first sewing coil, and then the fabric tape is turned outward with the first sewing coil as the boundary, and then the steel wire rope is installed in the fabric tape by sewing with a sewing machine, at this time, the sewing of the sewing machine forms a second sewing coil on the fabric tape; the second sewing coil is located outside the steel wire rope;

[0026] The width of the cloth tape is 20mm-30mm, the distance between the first sewing coil and the edge of the fabric is 5mm-10mm, and the distance between the second sewing coil and the first sewing coil is 1mm-4mm.

[0027] Preferably, before step one, the edge of the fabric is turned over to the reverse side of the fabric, and then the hemming is completed by sewing along the third sewing coil by a sewing machine, and the distance between the third sewing coil and the edge of the fabric after hemming is 5mm-10mm.

[0028] Preferably, the specific operation process of step two is: spread the fabric flat on the workbench with the front side of the fabric facing down, then place the chair frame in the middle of the fabric, and then use a nail gun to fix the fabric on the chair frame at at least four different positions, and the at least four different positions are respectively located around the chair frame.

[0029] Preferably, the chair frame is a chair seat frame or a chair back frame; the chair frame includes two first plastic strips and second plastic strips that are integrally formed, the first plastic strip includes at least one arc-shaped curved portion, the arc-shaped curved portion is located in the middle position of the first plastic strip, and when the chair frame is placed on a workbench, the two ends of the two first plastic strips are respectively facing the front and rear directions, the two ends of the two second plastic strips are respectively facing the left and right directions, the protruding parts of the two second arc-shaped curved portions are downward and in contact with the workbench, thereby making the two second plastic strips suspended in the air.

[0030] Preferably, an inclined surface is provided on the first plastic strip, and the pressing member includes a second vertical portion and an inclined portion, and the angle between the inclined portion and the second vertical portion ranges from 90° to 145°. When the two second cylinders drive the two pressing members to move toward each other, the inclined portion and the inclined surface abut against each other, thereby pressing the chair frame onto the workbench and causing the chair frame to be pre-deformed.

[0031] Preferably, the two ends of the wire rope are fixed by nailing with a nail gun;

[0032] Alternatively, the chair frame is provided with two first slots, and the two ends of the steel wire rope are embedded in the two first slots to fix the two ends of the steel wire rope.

[0033] Preferably, the fabric is mesh, cloth or genuine leather.

[0034] A chair comprises a chair frame manufactured by adopting the fabric installation method of the chair frame as described above.

[0035] The beneficial effects of the present invention are:

[0036] 1) When the chair frame is in a pre-deformed state, the steel wire rope and the fabric are tightened and fixed on the chair frame. In this way, after the pressing assembly is released, the rebound of the chair frame itself can keep the fabric tight;

[0037] 2) By pulling the steel wire rope to indirectly tighten the fabric on the chair frame, the fabric can be evenly stressed during the tightening process, avoiding damage to the fabric caused by direct stretching of the fabric. At the same time, the steel wire rope is pulled by the stretching component instead of by the operator, and the pulling is better and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the fabric installation device of the present invention;

[0039] Figure 2 is a schematic diagram of a workbench of the present invention;

[0040] Figure 3It is a schematic diagram of the structure of the stretching assembly of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the clamping assembly of the present invention;

[0042] Figure 5 It is a schematic structural diagram of the quick clamp of the present invention.

[0043] Description of reference numerals:

[0044] 1. Frame; 9. Workbench; 2. First stopper; 3. Second stopper; 4. First cylinder; 5. Stretching member; 51. First stretching portion; 52. Second stretching portion; 53. Gap; 6. Third stopper; 7. Second cylinder; 8. Pressing member; 80. Inclined portion; 90. Mounting groove. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the present invention, Figure 1 For reference, the end of the workbench closer to the staff is the "front" end, the end of the workbench away from the staff is the "back" end, the end of the workbench closer to the staff's left hand is the "left" end, and the end of the workbench closer to the staff's right hand is the "right" end, and "up" and "down" are up and down in the normal sense.

[0051] Embodiment 1:

[0052] A fabric installation device for a chair frame, comprising a frame 1 and a workbench 9 arranged on the frame 1; the workbench 9 is provided with two stretching assemblies and two pressing assemblies; the two stretching assemblies are respectively located at the left half and the right half of the workbench 9, and the two pressing assemblies are respectively located at the left half and the right half of the workbench 9; the stretching assembly is located in front of the pressing assembly;

[0053] The pressing assembly includes a pressing member 8 and a second cylinder 7, wherein the second cylinder 7 is fixedly mounted on a workbench 9; the second cylinder 7 drives the two pressing members 8 to move toward each other to press the left and right sides of the chair frame and force the chair frame to be pre-deformed;

[0054] The stretching assembly includes a bracket, a stretching member 5 and a first cylinder 4 for driving the stretching member 5 to move. The bracket is fixedly installed on a workbench 9, and the first cylinder 4 is fixedly installed on the upper half of the bracket. The two first cylinders 4 drive the two stretching members 5 to pull the steel wire rope so that the steel wire rope and the fabric are both tightly attached to the chair frame and are in a taut state. In this way, a steel wire rope is installed on the fabric, and the steel wire rope is stretched by the stretching assembly so that the fabric is tightly attached to the chair frame and is in a taut state. Compared with the previous method of tightening the fabric and attaching it to the chair frame by multiple workers and then fixing the fabric with nails using a nail gun, the work efficiency is greatly improved and manpower and material resources are saved. At the same time, the installation position of the fabric is also more accurate.

[0055] It is worth noting that, since the steel wire rope and the fabric are tightened and fixedly mounted on the chair frame when the chair frame is in a pre-deformed state, after the pressing assembly is released, the rebound of the chair frame itself can keep the fabric tight;

[0056] In addition, by pulling the steel wire rope to indirectly tighten the fabric on the chair frame, the fabric can be evenly stressed during the tightening process, avoiding damage to the fabric caused by directly stretching the tightened fabric. At the same time, pulling the steel wire rope by the stretching component replaces the operator pulling the steel wire rope, and the pulling situation is better and more stable.

[0057] The fabric can be mesh, cloth, genuine leather, etc.

[0058] It is worth mentioning that in order to ensure that the fabric does not slip during the clamping process of the chair frame, the fabric should be initially fixed with a nail gun. Generally speaking, in order not to affect the final tension of the fabric, the fabric is usually initially fixed with only 2-5 nails using a nail gun.

[0059] In this embodiment, both ends of the steel wire rope are provided with a blocking part, and the blocking part is a cylinder or a sphere, and the diameter of the blocking part is larger than the diameter of the steel wire rope. The tensioning member 5 is provided with a first tensioning portion 51 and a second tensioning portion 52, and a gap 53 is provided between the first tensioning portion 51 and the second tensioning portion 52, and the width of the gap 53 is larger than the diameter of the steel wire rope and smaller than the diameter of the blocking part. After the steel wire rope passes through the gap 53 and the blocking part abuts against the first tensioning portion 51 and the second tensioning portion 52, the two first cylinders 4 drive the two tensioning members 5 to pull the steel wire rope.

[0060] In this embodiment, a first limit member 2, a second limit member 3 and a third limit member 6 are further provided. The first limit member 2 and the second limit member 3 are respectively located at the front half and the rear half of the workbench 9. The third limit member 6 is fixedly installed on the top of the second limit member 3 and protrudes forward from the second limit member 3. The first limit member 2, the second limit member 3 and the third limit member 6 cooperate together to preliminarily position the chair frame; in this way, when the chair frame is placed on the workbench 9, the first limit member 2 is used to determine the position of the front end of the chair frame, the second limit member 3 is used to determine the position of the rear end of the chair frame, and the third limit member 6 is used to determine the height of the rear end of the chair frame, thereby ensuring that the position of the chair frame will not have a relatively large deviation.

[0061] Further preferably, the clamping member 8 includes a second vertical portion and an inclined portion 80, the angle between the inclined portion 80 and the second vertical portion is mainly determined by the shape of the chair frame, generally speaking, the angle ranges from 90° to 145°, the second vertical portion is fixedly connected to the second cylinder 7, when the two second cylinders 7 drive the two clamping members 8 to move toward each other, the inclined portion 80 abuts against the inclined surface so that the chair frame is pressed against the workbench 9, and the chair frame is pre-deformed; further preferably, the inclined portion 80 is provided with rounded corners, so as to avoid relatively large friction between the inclined portion 80 and the fabric when the second cylinder 7 pushes the clamping member 8 to move toward the chair frame.

[0062] In other embodiments, the pressing member 8 may also be pressed against the outer side of the wire rope by a quick clamping method.

[0063] In this embodiment, two parallel mounting grooves 90 are provided on the workbench 9, and the second limiting member 3 is fixedly installed on the two mounting grooves 90 by fasteners; in this way, the second limiting member 3 is fixed at different positions of the mounting groove 90 so that the distance between the second limiting member 3 and the first limiting member 2 changes, that is, the present device can be applicable to chair frames of different models and specifications.

[0064] In this embodiment, a turntable is also provided, which is rotatably mounted on the frame 1, and the workbench 9 is the upper surface of the turntable; further preferably, a bearing is also provided, which is located between the turntable and the frame 1, and is used to make the turntable rotate more smoothly; in this way, the staff does not need to walk back and forth when nailing the mesh with a nail gun.

[0065] A method for installing fabric on a chair frame, using the above-mentioned fabric installation device for a chair frame to complete the installation of the fabric on the chair frame;

[0066] The specific steps are as follows:

[0067] Step 1: Install the wire rope on the fabric and make a circle along the edge of the fabric;

[0068] Step 2: Preliminarily fix the fabric on the chair frame, and make the two ends of the steel wire rope in the fabric be located at the front side of the chair frame;

[0069] Step 3: Place the chair frame on the workbench 9 and between the two pressing assemblies, and then use the two second cylinders 7 to drive the two pressing members 8 to move toward each other to press the left and right sides of the chair frame and force the chair frame to be pre-deformed;

[0070] Step 4: The two first cylinders 4 drive the two stretching members 5 to move toward each other, and then the two ends of the crossed steel wire rope are respectively installed on the two stretching members 5, and then the two first cylinders 4 drive the two stretching members 5 to return along the original path to stretch the steel wire rope so that the steel wire rope and the fabric are tightly attached to the periphery of the chair frame and are in a taut state;

[0071] Step 5: Use a nail gun to fix the fabric on the chair frame;

[0072] Step 6: Remove the two ends of the steel wire rope from the tensioning member 5, and then fix the two ends of the steel wire rope to the chair frame;

[0073] Step 7: The two second cylinders 7 drive the two pressing members 8 to return along the original path, and then take the chair frame out of the workbench 9.

[0074] Preferably, both ends of the steel wire rope are provided with a blocking part, the blocking part is a cylinder or a sphere, the diameter of the blocking part is larger than the diameter of the steel wire rope, the stretching member 5 is provided with a first stretching part 51 and a second stretching part 52, a gap 53 is provided between the first stretching part 51 and the second stretching part 52, the width of the gap 53 is larger than the diameter of the steel wire rope and smaller than the diameter of the blocking part, after the steel wire rope passes through the gap 53 and the blocking part abuts against the first stretching part 51 and the second stretching part 52, the two first cylinders 4 drive the two stretching members 5 to return along the original path to pull the steel wire rope.

[0075] Preferably, the steps for installing the wire rope on the fabric are as follows:

[0076] First, fix the cloth tape on the front side of the fabric by sewing the tape with sewing machine thread and make a circle along the edge of the fabric. At this time, the sewing thread of the sewing machine forms the first sewing loop on the cloth tape.

[0077] The steel wire rope is then placed on the fabric tape and located outside the first sewing coil, and then the fabric tape is turned outward with the first sewing coil as the boundary, and then the steel wire rope is installed in the fabric tape by sewing with a sewing machine, at this time, the sewing of the sewing machine forms a second sewing coil on the fabric tape; the second sewing coil is located outside the steel wire rope;

[0078] The width of the cloth tape is 20mm-30mm, the distance between the first sewing coil and the edge of the fabric is 5mm-10mm, and the distance between the second sewing coil and the first sewing coil is 1mm-4mm.

[0079] Preferably, before step one, the edge of the fabric is turned over to the reverse side of the fabric, and then the hemming is completed by sewing along the third sewing coil by a sewing machine, and the distance between the third sewing coil and the edge of the fabric after hemming is 5mm-10mm.

[0080] Preferably, the specific operation process of step two is: spread the fabric flat on the workbench 9 with the front side of the fabric facing down, then place the chair frame in the middle of the fabric, and then fix the fabric on the chair frame at at least four different positions using a nail gun, and the at least four different positions are respectively located around the chair frame.

[0081] Preferably, the chair frame is a chair seat frame or a chair back frame; the chair frame includes two first plastic strips and a second plastic strip that are integrally formed, the first plastic strip includes at least one arc-shaped curved portion, the arc-shaped curved portion is located in the middle position of the first plastic strip, and when the chair frame is placed on the workbench 9, the two ends of the two first plastic strips are respectively facing the front and rear directions, the two ends of the two second plastic strips are respectively facing the left and right directions, the protruding parts of the two second arc-shaped curved portions are downward and in contact with the workbench 9, thereby making the two second plastic strips suspended in the air.

[0082] Preferably, an inclined surface is provided on the first plastic strip, and the pressing member 8 includes a second vertical portion and an inclined portion 80, and the angle between the inclined portion 80 and the second vertical portion ranges from 90° to 145°. When the two second cylinders 7 drive the two pressing members 8 to move toward each other, the inclined portion 80 abuts against the inclined surface, thereby pressing the chair frame onto the workbench 9 and causing the chair frame to be pre-deformed.

[0083] Preferably, a first limit member 2, a second limit member 3 and a third limit member 6 are further provided. The first limit member 2 and the second limit member 3 are respectively located at the front half and the rear half of the workbench 9. The third limit member 6 is fixedly installed on the top of the second limit member 3 and protrudes forward from the second limit member 3. The first limit member 2, the second limit member 3 and the third limit member 6 cooperate together to preliminarily position the chair frame.

[0084] Preferably, the fabric is mesh, cloth or genuine leather.

[0085] In this embodiment, in the process of finally fixing the fabric on the chair frame by nailing with a nail gun, the nail gun moves one circle along the edge of the fabric and simultaneously performs nailing to fix the fabric on the chair frame, and the interval between two adjacent nailing positions of the nail gun does not exceed 10 mm; further preferably, the nail gun moves one circle along the edge of the fabric and simultaneously performs nailing to fix the cloth belt on the upper end surface of the chair frame.

[0086] It is worth mentioning that after the fabric is finally fixed on the chair frame by nailing with a nail gun, the part of the steel wire rope located in the cloth belt is also fixed accordingly. Therefore, it is only necessary to fix the two ends of the steel wire rope in step six. In this embodiment, the two ends of the steel wire rope are fixed by nailing with a nail gun. In other embodiments, two first slots are provided on the chair frame, and the two ends of the steel wire rope are buried in the two first slots.

[0087] A chair comprises a chair frame manufactured by adopting the fabric installation method of the chair frame as described above.

[0088] Embodiment 2:

[0089] The difference between this embodiment and the first embodiment is that in the first embodiment, the steel wire rope only serves to tighten the fabric, and the fabric is finally fixed to the chair frame by a large number of nails, while in the present embodiment, the steel wire rope not only serves to tighten the fabric, but also finally fixes the fabric to the chair frame by the steel wire rope.

[0090] In this embodiment, a method for installing fabric on a chair frame is implemented by using the fabric installation device for a chair frame as described above, and the specific steps are as follows:

[0091] The specific steps are as follows:

[0092] Step 1: Install the wire rope on the fabric and make a circle along the edge of the fabric;

[0093] Step 2: Place the chair frame on the workbench 9 and between the two pressing components, and then preliminarily fix the fabric on the chair frame so that both ends of the steel wire rope in the fabric are located at the front side of the chair frame;

[0094] Step 3: The two second cylinders 7 drive the two pressing members 8 to move toward each other to press the left and right sides of the chair frame and force the chair frame to be pre-deformed;

[0095] Step 4: The two first cylinders 4 drive the two stretching members 5 to move toward each other, and then the two ends of the crossed steel wire rope are respectively installed on the two stretching members 5, and then the two first cylinders 4 drive the two stretching members 5 to return along the original path to stretch the steel wire rope so that the steel wire rope and the fabric are tightly attached to the periphery of the chair frame and are in a taut state;

[0096] Step 5: Remove the two ends of the steel wire rope from the stretching member 5, and then fix the two ends of the steel wire rope to the chair frame, so that the fabric is fixedly installed on the chair frame;

[0097] Step 6: The two second cylinders 7 drive the two pressing members 8 to return along the original path, and then take the chair frame out of the workbench 9.

[0098] In this embodiment, both ends of the steel wire rope are provided with a blocking part, and the blocking part is a cylinder or a sphere, and the diameter of the blocking part is larger than the diameter of the steel wire rope. The tensioning member 5 is provided with a first tensioning portion 51 and a second tensioning portion 52, and a gap 53 is provided between the first tensioning portion 51 and the second tensioning portion 52, and the width of the gap 53 is larger than the diameter of the steel wire rope and smaller than the diameter of the blocking part. After the steel wire rope passes through the gap 53 and the blocking part abuts against the first tensioning portion 51 and the second tensioning portion 52, the two first cylinders 4 drive the two tensioning members 5 to return along the original path to pull the steel wire rope.

[0099] In this embodiment, the chair frame is provided with a step surface, and the step surface is provided with two second slots.

[0100] Among them, initially fixing the fabric to the chair frame means: placing the steel wire rope part of the fabric on the step surface to prevent the fabric from falling;

[0101] Fixing the two ends of the steel wire rope on the chair frame means: embedding the blocking parts at the two ends of the steel wire rope into the two second slots respectively, and the blocking parts are tightly matched with the second slots to fix the two ends of the steel wire rope.

[0102] Alternatively, the chair frame is provided with a closed loop groove, the depth of which is at least twice the diameter of the wire rope, and the closed loop groove is provided with two third slots.

[0103] Among them, initially fixing the fabric on the chair frame means: burying the steel wire rope part in the fabric into the closed loop groove to prevent the fabric from falling;

[0104] Fixing the two ends of the steel wire rope on the chair frame means: embedding the blocking parts at the two ends of the steel wire rope into the two third slots respectively, and the blocking parts are tightly matched with the third slots to fix the two ends of the steel wire rope.

[0105] Alternatively, the chair frame is provided with a spiral open ring groove, and the open ring groove is provided with two fourth slots,

[0106] Among them, initially fixing the fabric on the chair frame means: burying the steel wire rope part in the fabric into the open loop groove to prevent the fabric from falling;

[0107] Fixing the two ends of the steel wire rope on the chair frame means: embedding the blocking parts at the two ends of the steel wire rope into the two fourth slots respectively, and the blocking parts are tightly matched with the fourth slots to fix the two ends of the steel wire rope.

[0108] In this embodiment, the steps of installing the steel wire rope on the fabric are as follows:

[0109] First, fix the cloth tape on the front side of the fabric by sewing the tape with the sewing machine thread and make a circle along the edge of the fabric. At this time, the sewing machine thread forms a fourth sewing loop on the cloth tape.

[0110] The steel wire rope is then placed on the cloth tape and located outside the fourth sewing coil, and then the cloth tape is turned outward with the fourth sewing coil as the boundary, and then the steel wire rope is installed in the cloth tape by sewing with a sewing machine, at this time, the sewing of the sewing machine forms a fifth sewing coil on the cloth tape; the fifth sewing coil is located outside the steel wire rope;

[0111] Among them, the width of the cloth tape is 5mm-15mm, the distance between the fourth sewing coil and the edge of the fabric is 3mm-7mm, and the distance between the fifth sewing coil and the fourth sewing coil is 2mm-4mm.

[0112] Embodiment 3

[0113] The difference between this embodiment and the second embodiment is that only one stretching component is used in this embodiment, and the specific process is as follows:

[0114] First, install the blocking part at one end of the wire rope in one of the slots on the chair frame, then pull the blocking part at the other end of the wire rope through the stretching assembly to tighten the wire rope and the fabric, and then bury the blocking part at the other end of the wire rope into another slot on the chair frame to fix the wire rope and the fabric.

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0116] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for installing fabric on a chair frame, characterized in that: The fabric installation device for a chair frame is used to complete the installation of the fabric of the chair frame, the fabric installation device for the chair frame comprises a frame (1) and a workbench (9) arranged on the frame (1); the workbench (9) is provided with two stretching assemblies and two pressing assemblies; the two stretching assemblies are respectively located at the left half and the right half of the workbench (9); the two pressing assemblies are respectively located at the left half and the right half of the workbench (9); the stretching assembly is located in front of the pressing assembly; The stretching assembly comprises a bracket, a stretching member (5) and a first cylinder (4) for driving the stretching member (5) to move, the bracket is fixedly mounted on a workbench (9), the first cylinder (4) is fixedly mounted on the upper half of the bracket, the pressing assembly comprises a pressing member (8) and a second cylinder (7) for driving the pressing member (8) to move, the second cylinder (7) is fixedly mounted on the workbench (9); A first limiting member (2), a second limiting member (3) and a third limiting member (6) are also provided. The first limiting member (2) and the second limiting member (3) are respectively located at the front half and the rear half of the workbench (9). The third limiting member (6) is fixedly mounted on the top of the second limiting member (3) and protrudes forward from the second limiting member (3). The first limiting member (2), the second limiting member (3) and the third limiting member (6) cooperate with each other to preliminarily position the chair frame. When the chair frame is placed on the workbench (9), the first limiting member (2) is used to determine the position of the front end of the chair frame, the second limiting member (3) is used to determine the position of the rear end of the chair frame, and the third limiting member (6) is used to determine the height of the rear end of the chair frame. The chair frame comprises two first plastic strips and a second plastic strip formed in one piece, the first plastic strip comprising at least one arc-shaped curved portion, the arc-shaped curved portion being located in the middle of the first plastic strip, and when the chair frame is placed on a workbench (9), the two ends of the two first plastic strips are respectively oriented in the front-rear direction, the two ends of the two second plastic strips are respectively oriented in the left-right direction, and the protruding portions of the arc-shaped curved portions of the two first plastic strips are downward and in contact with the workbench (9), thereby causing the two second plastic strips to be suspended in the air; The first plastic strip is provided with an inclined surface, the pressing member (8) comprises a second vertical portion and an inclined portion (80), the angle between the inclined portion (80) and the second vertical portion ranges from 90° to 145°, the second vertical portion is fixedly connected to the second cylinder (7), and when the two second cylinders (7) drive the two pressing members (8) to move towards each other, the inclined portion (80) abuts against the inclined surface, thereby pressing the chair frame onto the workbench (9), and causing the chair frame to be pre-deformed; The specific steps are as follows: Step 1: Install the wire rope on the fabric and make a circle along the edge of the fabric; Step 2: Lay the fabric flat on the workbench (9) with the front side of the fabric facing downward, then place the chair frame in the middle of the fabric, with the chair frame located between the two pressing components, and then preliminarily fix the fabric on the chair frame so that the two ends of the steel wire rope in the fabric are located at the front side of the chair frame; Step 3: Using two second cylinders (7) to drive two pressing members (8) to move toward each other to press the left and right sides of the chair frame and force the chair frame to generate pre-deformation; Step 4: The two first air cylinders (4) drive the two stretching members (5) to move toward each other, and then the two ends of the crossed steel wire rope are respectively installed on the two stretching members (5), and then the two first air cylinders (4) drive the two stretching members (5) to return along the original path to stretch the steel wire rope so that the steel wire rope and the fabric are tightly attached to the periphery of the chair frame and are in a taut state; Step 5: Use a nail gun to fix the fabric on the chair frame; Step 6: Remove the two ends of the steel wire rope from the tensioning member (5), and then fix the two ends of the steel wire rope to the chair frame; Step 7: The two second cylinders (7) drive the two pressing members (8) to return along the original path, and then take the chair frame out of the workbench (9); The two ends of the steel wire rope are fixed to the chair frame by nailing with a nail gun, or the chair frame is provided with two first slots, and the two ends of the steel wire rope are embedded in the two first slots to fix the two ends of the steel wire rope.

2. The method for installing fabric on a chair frame according to claim 1, characterized in that: Both ends of the steel wire rope are provided with a blocking part, the blocking part is a cylinder or a sphere, the diameter of the blocking part is larger than the diameter of the steel wire rope, the stretching member (5) is provided with a first stretching member (51) and a second stretching member (52), a gap (53) is provided between the first stretching member (51) and the second stretching member (52), the width of the gap (53) is larger than the diameter of the steel wire rope and smaller than the diameter of the blocking part, after the steel wire rope passes through the gap (53) and the blocking part abuts against the first stretching member (51) and the second stretching member (52), the two first cylinders (4) drive the two stretching members (5) to return along the original path to pull the steel wire rope.

3. The method for installing fabric on a chair frame according to claim 1, characterized in that: The steps to install the wire rope on the fabric are as follows: First, fix the cloth tape on the front side of the fabric by sewing the tape with sewing machine thread and make a circle along the edge of the fabric. At this time, the sewing thread of the sewing machine forms the first sewing loop on the cloth tape. The steel wire rope is then placed on the fabric tape and located outside the first sewing coil, and then the fabric tape is turned outward with the first sewing coil as the boundary, and then the steel wire rope is installed in the fabric tape by sewing with a sewing machine, at this time, the sewing of the sewing machine forms a second sewing coil on the fabric tape; the second sewing coil is located outside the steel wire rope; The width of the cloth tape is 20mm-30mm, the distance between the first sewing coil and the edge of the fabric is 5mm-10mm, and the distance between the second sewing coil and the first sewing coil is 1mm-4mm.

4. The method for installing fabric on a chair frame according to claim 1, characterized in that: Before step one, the edge of the fabric is turned over to the reverse side of the fabric, and then the curling is completed by sewing along the third sewing coil by a sewing machine, and the distance between the third sewing coil and the edge of the fabric after curling is 5 mm-10 mm.

5. The method for installing fabric on a chair frame according to claim 1, characterized in that: In step 2, the fabric is fixed to the chair frame at at least four different positions by a nail gun, and the at least four different positions are respectively located around the chair frame.

6. The method for installing fabric on a chair frame according to claim 1, characterized in that: The chair frame is a chair seat frame or a chair back frame.

7. The method for installing fabric on a chair frame according to claim 1, characterized in that: The fabric is mesh, cloth or genuine leather.

8. A chair, comprising a chair frame manufactured using the fabric installation method for a chair frame according to any one of claims 1 to 7.

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