CN111203952B

CN111203952B - Manufacturing method of rotary single chair

Info

Publication number: CN111203952B
Application number: CN201911371133.9A
Authority: CN
Inventors: 陈方剑; 冯柱麟; 熊明贵; 范利华; 周秋炳; 陈嘉琦; 张迪; 赵亚辉; 张国根
Original assignee: Xilinmen Hotel Furniture Co ltd
Current assignee: Xilinmen Hotel Furniture Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-08-17
Anticipated expiration: 2039-12-26
Also published as: CN111203952A

Abstract

The invention discloses a manufacturing method of a rotary single chair, which comprises the following steps: manufacturing an inward bending die: taking two templates with arc-shaped notch grooves on the periphery, gluing and overlapping two sides of veneers, covering the two templates on the upper and lower sides of the stacked veneers respectively, taking the two templates and the veneers together on a jig saw for cutting, cutting the veneers into notches which are the same as the arc-shaped notch grooves, putting the stacked veneers into a press for hot pressing, forming an inner bending die blank body by the stacked veneers after the hot pressing, pressing and centering the inner bending die blank body on the upper surface of the inner bending die blank body in a fit manner, and cutting the inner bending die blank body and the sleeve die together on the jig saw to obtain an inner bending die; secondly, drilling an embedded nut groove at the bottom of the inner bending die, and embedding an embedded nut in the embedded nut groove; and thirdly, performing soft packing treatment on the front and the back of the inner bending die and connecting a connecting plate at the position of the embedded nut. The inner bending die is simple in forming, high in structural strength, capable of saving raw materials, capable of ensuring size precision and fine in working of the whole single chair.

Description

Manufacturing method of rotary single chair

Technical Field

The invention relates to the technical field of wooden furniture, in particular to a manufacturing method of a rotary single chair.

Background

The existing rotating single chair is formed by splicing the inner bending die part by solid wood during machining, as shown in figure 1, the center of the inner bending die is provided with a spherical structure, a frame needs to be spliced out firstly, and then a piece of solid wood is filled.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a manufacturing method of a rotary single chair, the inner bending die is simple to form, the structural strength is high, raw materials are saved, the dimensional precision is guaranteed, and the whole single chair is exquisite in workmanship.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of manufacturing a swivel chair comprising the steps of:

manufacturing an inward bending die: taking two templates with arc-shaped notch grooves on the periphery, coating glue on two sides of the templates with thickness of 2-3mm and overlapping, covering the two templates on the upper and lower surfaces of the stacked veneers respectively, cutting the two templates and the veneers on a jig saw, cutting the veneers into notches with the same thickness as the arc-shaped notch grooves, putting the stacked veneers into a press for hot pressing at the pressure of 6-8t and the temperature of 150-, the edge of the inner bending die is polished into an arc shape by an angle grinder;

secondly, drilling an embedded nut groove at the bottom of the inner bending die, and embedding an embedded nut in the embedded nut groove;

thirdly, soft packing is carried out on the front and back surfaces of the inner bending die, an upper connecting plate is connected at the position where the embedded nut is located, the lower portion of the connecting plate is connected with a single chair supporting column, and the lower end of the single chair supporting column is connected with a single chair base.

Firstly, covering an original inner bending die to be processed with a soft material to obtain a flattened profile of the inner bending die, wherein the area of a template is larger than that of the flattened inner bending die, the flattened inner bending die can be completely projected on the template, and the template is square solid wood.

The method comprises the following steps that firstly, the thickness of the laminated veneers is 18-20mm, the veneers on the uppermost layer and the lowermost layer are regular and complete square veneers according to the size of a final product, the square veneers are matched with the square outline of a square solid wood template, the multilayer veneers in the middle can be irregular and incomplete veneers, the irregular veneers are laid along the rectangular edges of the templates and are aligned with and fully paved on the rectangular edges of the templates, an unskebed area can be reserved inside the veneers in the middle layer, the upper template and the lower template are aligned, and the internal veneers are uniformly placed.

The method comprises the following steps that a press in the step I is provided with a die, the die comprises an upper die and a lower die, steam is communicated into the upper die and the lower die, the upper die and the lower die are connected with two steam pipes, the two steam pipes are designed to be in one-inlet-one-outlet mode, the lower surface of the upper die and the upper surface of the lower die are respectively matched with the upper surface and the lower surface of the stacked veneers, 4 supporting parts are formed at the top of the lower die, the lower surface of the stacked veneers is supported by the 4 supporting parts after the stacked veneers are placed into the press, impurities are removed by blowing and sweeping the upper surface of the lower die through compressed gas, and the upper die and the lower die are close to each other and abut against the stacked veneers.

Three convex points which are arranged in a straight line are arranged in the center of the upper surface of the lower die, one convex point in the middle is positioned in the middle of the other two convex points, concave points corresponding to the convex points are formed on the lower surface of the inner bending die blank after hot pressing is finished, and the three concave points are connected and a central line which is vertical to the middle of the connecting line is drawn.

The support is including being four support stands of square arranging, connects through the support diaphragm of horizontal distribution between two adjacent support stands, and the lower surface of incurve die idiosome supports through the top of four support stands.

The upper surface of the cover die is provided with a cover die supporting rod, the cover die is provided with a centering groove, and the centering of the inner bending die blank body and the cover die is realized by aligning a central line vertical to a connecting line of the three concave points and the center of the centering groove.

And (3) arranging a pipeline groove at the periphery of the back surface of the inner bending die, and performing soft package treatment on the front and back surfaces of the inner bending die in the step (III): the method comprises the steps of filling first sponge and first silk floss on the front sides of a backrest and armrests of a single chair in sequence, then wrapping first wrapping skins on the backrest and the armrests on the front sides of the single chair and nailing and fixing the first wrapping skins to pipe chase positions extending to the back sides of the single chair, then wrapping third wrapping skins on the surface of the single chair and nailing and fixing the third wrapping skins to pipe chase positions, and finally installing pipes in the pipe chase.

The front surface of the single chair is provided with a cushion, the cushion comprises a seat plate, a second sponge, a second silk floss and a second wrapping skin, the upper surface of the seat plate is sequentially filled with the second sponge and the second silk floss, and the upper surface of the seat plate is provided with the second wrapping skin wrapping the second sponge and the second silk floss.

The invention has the beneficial effects that: steam is introduced into the upper die and the lower die, and pressure is maintained for hot pressing, so that the inner bending die is simple to form, and meanwhile, the structural strength is high; because the interior of the inward bending die adopts the incomplete veneer with irregular shape, the raw material is greatly saved, and the appearance is still more beautiful; the upper die is matched with the lower die, the lower die is provided with salient points for centering, and the dimensional accuracy of the inner bending die manufactured each time is guaranteed; and after the subsequent front and back surfaces are subjected to soft package treatment, the whole single chair is exquisite in workmanship.

Drawings

FIG. 1 is a perspective view of a prior art internal bending die after splicing;

FIG. 2 is a front view of the template of the present invention;

FIG. 3 is a schematic view of the mating of the upper and lower molds of the present invention;

FIG. 4 is a top view of the lower mold of the present invention;

FIG. 5 is a schematic view of the assembly of the support, the inner bend die blank and the cover die of the present invention;

FIG. 6 is a perspective view of an inside bending die of the present invention;

FIG. 7 is a side view of the swivel chair of the present invention;

FIG. 8 is an enlarged view taken at A in FIG. 7;

FIG. 9 is a front view of the swivel chair of the present invention.

In the figure: the die plate comprises a die plate 1, an arc-shaped notch groove 11, a die 2, an upper die 21, a lower die 22, a supporting part 221, a convex point 222, an inward-bending die blank body 3, a support 4, a support upright post 41, a support transverse plate 42, a cover die 5, a cover die support rod 51, a centering groove 52, an inward-bending die 6, a pipeline groove 61, an embedded nut groove 62, an embedded nut 63, a connecting plate 7, a connecting screw 71, a gasket 72, a single-chair support column 73, a single-chair base 74, a first sponge 8, a first silk floss 81, a seat plate 82, a second sponge 83, a second silk floss 84, a first coating leather 85, a second coating leather 86, a third coating leather 87 and a pipeline 9.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description below:

as shown in fig. 2 to 9, a method for manufacturing a swivel single chair includes the steps of:

manufacturing an inward bending die 6: two templates 1 with arc-shaped notch grooves 11 on the periphery are taken, the templates 1 are made of square solid wood, the thickness of the templates 1 is large, the structural strength is also large, the templates can be used repeatedly for a long time without being damaged, and the templates are safe and reliable when being used as a profile on a subsequent jig saw for cutting.

The original inner bending die 6 to be processed is coated by soft materials to obtain the profile of the flattened inner bending die 6, the area of the template 1 is larger than that of the flattened inner bending die 6, and the flattened inner bending die 6 can be completely projected on the template 1. The periphery of the template 1 at least exceeds the outer edge 5cm of the flattened inner bending die 6, so that the edge of the inner bending die 6 manufactured according to the outline of the template 1 has redundant parts, and the follow-up trimming of the inner bending die 6 is ensured.

Gluing two sides of a veneer with the thickness of 2-3mm, overlapping the veneers together, wherein the thickness of the laminated veneer is 18-20mm, and covering two templates 1 on the upper and lower sides of the stacked veneer respectively according to the size of a final product, wherein the veneer on the uppermost layer and the veneer on the lowermost layer can be glued on one side, and the exposed side (the side contacted with the template 1) can not be glued.

The top layer and the bottom layer of the wood veneer are regular and complete square wood veneers, so that the front surface and the back surface of the manufactured inner bending die 6 are attractive without splicing marks, and the square wood veneers are matched with the square outline of the square solid wood die plate 1 (the square wood veneers can be flawed at the position where a gap matched with the arc-shaped gap groove 11 needs to be cut, and the gaps need to be cut subsequently).

The multilayer veneer located in the middle can adopt irregular-shaped incomplete veneers, the irregular-shaped veneers are laid along the rectangular edge of the template 1 when laid, and are aligned with and fully laid on the rectangular edge of the template 1, and the design can ensure that no vacant part exists at the edge of the finally-formed inward-bending die 6.

The wood veneer in the middle layer can be left with an area which is not paved, the upper template 1 and the lower template 1 are aligned, and the wood veneer in the middle layer is placed uniformly. The formed inner bending die 6 may have a few voids in the inside thereof, but the use thereof is not affected, and the voids are not observed in the outside. The irregular shape incomplete wood skin is utilized, so that raw materials and waste are greatly saved.

Two templates 1 and veneers are taken to be cut together on the jig saw, the veneers are cut into gaps which are the same as the arc-shaped gap grooves 11, stress concentration can be reduced at the positions of the gaps during subsequent hot pressing through the arrangement of the gaps, the veneers on two sides of the gaps are provided with deformed spaces after being extruded, and the veneers on two sides of the gaps cannot be inserted into each other.

And then putting the stacked veneers into a press for hot pressing, controlling the pressure to be 6-8t and the temperature to be 150-160 ℃, and carrying out hot pressing for 25-30 minutes, wherein the press is provided with a die 2, the die 2 comprises an upper die 21 and a lower die 22, the upper die 21 and the lower die 22 are respectively provided with a closed cavity, steam is introduced into the upper die 21 and the lower die 22, the upper die 21 and the lower die 22 are respectively connected with two steam pipes, the two steam pipes are in one-out design and are respectively communicated with the closed cavity, so that the working surfaces of the upper die 21 and the lower die 22 can generate the temperature of 150-160 ℃, and the upper die 21 and the lower die 22 are both made of iron materials. And (5) hot pressing to ensure that the glue is tightly bonded together after being melted.

The lower surface of the upper die 21 and the upper surface of the lower die 22 are respectively matched with the upper surface and the lower surface of the stacked veneers, 4 supporting parts 221 are formed at the top of the lower die 22, the lower surface of the stacked veneers is supported by the 4 supporting parts 221 after the stacked veneers are placed into the press, a space into which an air gun can extend is formed between the lower surface of the veneers and the upper surface of the lower die 22 at the moment, compressed air is utilized to sweep and remove impurities from the upper surface of the lower die 22 at the moment, so that the falling impurities of the stacked veneers or the impurities left on the upper surface of the lower die 22 can be removed, and the situation that the lower surface of the inner bending die 6 is left with the impurities to fall after subsequent hot pressing is avoided.

The upper and

lower molds

21 and 22 are then brought close to each other and pressed against the stacked veneers. The upper mold 21 may be moved down and the lower mold 22 may be stationary; alternatively, the upper mold 21 may be stationary and the lower mold 22 may be moved upward.

Three convex points 222 which are arranged in a straight line are arranged in the center of the upper surface of the lower die 22, one convex point 222 in the middle is positioned at the middle of the other two convex points 222, concave points corresponding to the convex points 222 are formed on the lower surface of the inner bending die blank body 3 after the hot pressing is finished, and the three concave points are connected and a central line which is perpendicular to the middle of the connecting line is drawn. The center line is convenient for subsequent centering and the embedded nut 63 is installed, so that the gravity center of the single chair cannot deviate.

The wood skin stacked after hot pressing forms an inner bending die blank body 3, the size of the inner bending die blank body 3 is larger than that of the inner bending die 6, and the outer edge of the inner bending die blank body 3 is provided with a wood skin part which is extruded and deformed.

On placing support 4 with interior bending die idiosome 3, support 4 is including being four support stands 41 of square arranging, connects through horizontal distribution's support diaphragm 42 between two adjacent support stands 41, and the lower surface of interior bending die idiosome 3 supports through the top of four support stands 41. The support 4 is used for supporting the inner bending die blank 3 and ensuring reliable positioning when the subsequent cover die 5 is installed.

The upper surface of the inner bending die blank body 3 is pressed into the sleeve die 5 in a fitting manner and is centered, the upper surface of the sleeve die 5 is provided with two sleeve die supporting rods 51, and the arrangement of the sleeve die supporting rods 51 is convenient for a person to hold and operate.

The cover die 5 is provided with a centering groove 52, and the centering of the inner bending die blank body 3 and the cover die 5 is realized by aligning a central line vertical to a connecting line of the three concave points with the center of the centering groove 52.

Then cutting the inner bending die blank body 3 and the sleeve die 5 together on a jig saw, cutting along the outer edge of the sleeve die 5, cutting off the part of the inner bending die blank body 3, which exceeds the outer edge of the sleeve die 5, to obtain an inner bending die 6, and polishing the edge of the inner bending die 6 into an arc shape by an angle grinder; this results in the completed inner bend die 6.

Secondly, drilling an embedded nut groove 62 at the bottom of the inner bending die 6, and embedding an embedded nut 63 into the embedded nut groove 62; the position of the embedded nut groove 62 is calculated according to a central line perpendicular to the middle of the connecting line of the three concave points, so that the gravity center of the single chair is ensured not to deviate.

Thirdly, soft packing is carried out on the front side and the back side of the inner bending die 6, the connection plate 7 is connected to the position where the embedded nut 63 is located, the connection plate 7 is fixed through four connection screws 71, the connection screws 71 are screwed into the embedded nut 63, and meanwhile the connection screws 71 are sleeved with gaskets 72 attached to the lower surface of the connection plate 7.

The lower part of the connecting plate 7 is connected with a single chair supporting column 73, and the lower end of the single chair supporting column 73 is connected with a single chair base 74. The single seat strut 73 is rotatable about the central axis of the single seat base 74 (which is prior art for single seat rotation and will not be described in detail).

And (3) arranging a pipeline groove 61 at the periphery of the back surface of the inner bending die 6, and performing soft packing treatment on the front surface and the back surface of the inner bending die 6 in the step (III): the first sponge 8 and the first silk floss 81 are filled in sequence at the front side of the backrest and the armrest (the first sponge 8 and the first silk floss 81 can be not filled at the position where the subsequent cushion is installed, because the subsequent position can be blocked by the cushion), then the first coating skin 85 is coated at the position of the backrest and the armrest at the front side of the single chair and nailed and fixed at the position of the pipeline groove 61 extending to the back side of the single chair, then the third coating skin 87 is coated at the surface of the backrest and the armrest and nailed and fixed at the position of the pipeline groove 61, and finally the pipeline 9 is installed in the pipeline groove 61. One end of the junction of the first coating skin 85 and the third coating skin 87 is nailed in the pipeline groove 61 through an air gun, and the pipeline 9 is arranged on the rear part for decoration, so that the whole body is more beautiful.

The front surface of the single chair is provided with a cushion, the cushion comprises a seat plate 82, a second sponge 83, a second silk floss 84 and a second wrapping leather 86, the seat plate 82 is a solid wood plate, the second sponge 83 and the second silk floss 84 are sequentially filled on the upper surface of the seat plate 82, and the second wrapping leather 86 wrapping the second sponge 83 and the second silk floss 84 is arranged on the upper surface of the seat plate 82. The second wrapping skin 86 partially wraps the lower surface of the seat plate 82, so that the whole outer edge of the seat plate 82 can be wrapped, the whole body is attractive, and the seat plate 82 can be detachably mounted on the front surface of the single chair.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A manufacturing method of a rotary single chair is characterized by comprising the following steps:

manufacturing an inward bending die (6): taking two templates (1) with arc-shaped notch grooves (11) on the periphery, coating glue on two sides of a veneer with the thickness of 2-3mm and overlapping, covering the two templates (1) on the upper and lower surfaces of the stacked veneer respectively, cutting the two templates (1) and the veneer on a jig saw together, cutting the veneer into notches which are the same as the arc-shaped notch grooves (11), putting the stacked veneer into a press for hot pressing, controlling the pressure to be 6-8t, controlling the temperature to be 150-, cutting along the outer edge of the sleeve die (5), cutting off the part of the inner bending die blank body (3) exceeding the outer edge of the sleeve die (5) to obtain an inner bending die (6), and polishing the edge of the inner bending die (6) into an arc shape by an angle grinder;

secondly, drilling an embedded nut groove (62) at the bottom of the inner bending die (6), and embedding an embedded nut (63) into the embedded nut groove (62);

thirdly, performing soft packing treatment on the front and back surfaces of the inner bending die (6), connecting an upper connecting plate (7) at the position where the embedded nut (63) is located, connecting the lower part of the connecting plate (7) with a single chair supporting column (73), and connecting the lower end of the single chair supporting column (73) with a single chair base (74);

the press in the step I is provided with a die (2), the die (2) comprises an upper die (21) and a lower die (22), the center of the upper surface of the lower die (22) is provided with three convex points (222) which are arranged in a straight line, one convex point (222) in the middle is positioned in the middle of the other two convex points (222), after the hot pressing is finished, the lower surface of a die blank body (3) is bent inwards to form concave points corresponding to the convex points (222), and the three concave points are connected and a central line vertical to the middle of the connection line is drawn; the upper surface of the cover die (5) is provided with a cover die supporting rod (51), the cover die (5) is provided with a centering groove (52), and the centering of the inner bending die blank body (3) and the cover die (5) is realized by aligning a central line vertical to a connecting line of the three concave points and the center of the centering groove (52).

2. The method for manufacturing the rotating single chair as claimed in claim 1, wherein in the step (i), the original inward-bending die (6) to be processed is coated with a soft material to obtain the flattened contour of the inward-bending die (6), the area of the template (1) is larger than the flattened area of the inward-bending die (6), the flattened inward-bending die (6) can be completely projected on the template (1), and the template (1) is made of square solid wood.

3. The method for manufacturing the swivel single chair as claimed in claim 2, wherein in the step (i), the thickness of the veneers after being stacked is 18-20mm, the veneers at the top and bottom layers are regular and complete square veneers according to the size of the final product, the square veneers are matched with the square outline of the square solid wood template (1), the multilayer veneers in the middle can be irregular and incomplete veneers, the irregular veneers are laid along the rectangular edges of the template (1) and are aligned and fully laid with the rectangular edges of the template (1), the inner part of the veneers at the middle layer can be provided with an unskebed area, the upper template (1) and the lower template (1) are aligned, and the inner veneers are uniformly laid.

4. The method for manufacturing a swivel chair according to claim 1, wherein the upper mold (21) and the lower mold (22) are filled with steam, the upper mold (21) and the lower mold (22) are connected with two steam pipes, the two steam pipes are designed to be in-and-out, the lower surface of the upper mold (21) and the upper surface of the lower mold (22) are respectively matched with the upper surface and the lower surface of the stacked veneers, 4 supporting portions (221) are formed at the top of the lower mold (22), the lower surface of the stacked veneers is supported by the 4 supporting portions (221) after the stacked veneers are placed into the press, the upper surface of the lower mold (22) is purged by using compressed gas to remove impurities, and then the upper mold (21) and the lower mold (22) are close to each other and press the stacked veneers.

5. The method for manufacturing the swivel single chair as claimed in claim 1, wherein the support (4) comprises four support posts (41) arranged in a square shape, two adjacent support posts (41) are connected by a support cross plate (42) distributed horizontally, and the lower surface of the inner bending die blank (3) is supported by the top ends of the four support posts (41).

6. The method for manufacturing the swivel chair according to claim 1, wherein the periphery of the back surface of the inner bending die (6) is provided with a pipeline groove (61), and the soft packing treatment is performed on the front and back surfaces of the inner bending die (6) in the step (iii): first sponge (8) and first silk floss (81) are filled in sequence on the front faces of the backrest and the armrests of the single chair, then a first coating leather (85) is coated on the backrest and the armrests on the front faces of the single chair and nailed and fixed at the pipe line groove (61) extending to the back face of the single chair, then a third coating leather (87) is coated on the back face of the single chair and nailed and fixed at the pipe line groove (61), and finally a pipe line (9) is installed in the pipe line groove (61).

7. The method for manufacturing a swivel chair according to claim 6, wherein the front of the chair is provided with a cushion, the cushion comprises a seat plate (82), a second sponge (83), a second silk floss (84) and a second wrapping skin (86), the second sponge (83) and the second silk floss (84) are sequentially filled on the upper surface of the seat plate (82), and the second wrapping skin (86) wrapping the second sponge (83) and the second silk floss (84) is arranged on the upper surface of the seat plate (82).