Sofa assembly line

Abstract

The invention relates to the field of furniture production and manufacturing, in particular to a sofa assembly line. Comprising an assembled vehicle body, a cushion station for placing a cushion on the assembled vehicle body, an armrest station for connecting and assembling an armrest and the cushion on the assembled vehicle body, a backrest station for connecting and assembling a backrest and the cushion on the assembled vehicle body, a detection station for testing a sofa finished product, and an annular vehicle rail for circulating movement of the assembled vehicle body, the cushion station, the armrest station, the backrest station and the detection station are evenly distributed around the center line of the vehicle rail, so that the whole assembly line is annularly arranged around the center line of the vehicle rail, and the occupied space of the assembly line is reduced.

Description

Technical Field

[0001] The present application relates to the field of furniture manufacturing, and in particular to a sofa assembly line. Background Art

[0002] Single sofas take up little space, are highly functional, and are suitable for use in many occasions. A general single sofa is mainly composed of a seat cushion, a backrest, and an armrest. A support leg is generally provided at the bottom of the armrest. For example, a wooden sofa with improved comfort is disclosed in Publication No. CN109393812A.

[0003] Existing sofas are generally assembled in batches on an assembly line. Multiple assembly stations are arranged in sequence, and semi-finished sofas are transported between the assembly stations by a trolley so that the semi-finished products become finished sofas after passing through each station in sequence. For example, a single-piece assembly line for a fixed sofa is disclosed in Publication No. CN109515872A.

[0004] With respect to the above-mentioned related technologies, each trolley needs to be recycled back to the corresponding initial position after completing the transportation, so that the assembly line occupies a larger area. Summary of the invention

[0005] In order to reduce the space occupied by the assembly line, the present application provides a sofa assembly line.

[0006] The present application provides a sofa assembly line which adopts the following technical solution.

[0007] A sofa assembly line comprises an assembly body, a cushion station for placing a seat cushion on the assembly body, an armrest station for connecting and assembling an armrest and a seat cushion on the assembly body, a backrest station for connecting and assembling a backrest and a seat cushion on the assembly body, an inspection station for testing finished sofa products, and a circular track for cyclic movement of the assembly body, wherein the cushion station, the armrest station, the backrest station and the inspection station are evenly arranged around the center line of the track.

[0008] By adopting the above technical solution, the assembly line is not easy to be set to a long length, which saves space. It is also unnecessary to move a long distance to return to the initial position after completing the installation process of a sofa on the assembly body, which is also helpful for improving the assembly efficiency.

[0009] Optionally, the assembled vehicle body includes a cushion platform for placing a cushion, a universal wheel rotatably connected to the cushion platform to move the cushion platform, a guide rod fixedly connected to the cushion platform, and a guide wheel rotatably connected to the guide rod and capable of moving only in the vehicle track, wherein the universal wheel can roll across the upper surface of the vehicle track.

[0010] By adopting the above technical solution, the assembled vehicle body is not easy to move away from the setting direction of the vehicle rails, and during the assembly process of the semi-finished sofa, the cushion platform can also rotate in the horizontal plane to facilitate efficient assembly work.

[0011] Optionally, the cushion platform is provided with armrest inner panels on opposite sides, the armrest inner panels are detachably connected with a telescopic rod, one end of the telescopic rod passing through the connected armrest inner panels is detachably connected with an armrest outer panel, the armrest outer panel is fixedly connected with a leg board, the armrest inner panel and the armrest outer panel are for placing the sofa armrests, and the leg board is for placing the sofa supporting legs.

[0012] By adopting the above technical solution, the sofa armrest is placed between the armrest inner plate and the armrest outer plate, and the supporting legs at the bottom of the sofa armrest can be placed on the leg rest plate, so that when the sofa armrest is assembled corresponding to the seat cushion, the unfinished sofa armrest can be supported to facilitate the assembly work.

[0013] Optionally, the telescopic rod includes a sleeve detachably connected to the inner plate of the armrest, a wide armrest rod plugged into and slidably connected to the sleeve and detachably connected to the outer plate of the armrest, an inner-tube lead screw rotatably connected to the sleeve and threadedly connected to the wide armrest rod, and a synchronization mechanism that drives the inner-tube lead screw to rotate.

[0014] By adopting the above technical solution, the distance between the inner plate of the armrest and the outer plate of the armrest can be adjusted to adapt to sofa armrests of different widths.

[0015] Optionally, the synchronization mechanism includes a screw gear coaxially fixedly connected to the screw in the cylinder, a gear inside the platform rotatably connected to the cushion platform and capable of meshing with the screw gear, an outer plate synchronization wheel coaxially fixedly connected to the inner gear of the platform, an outer plate drive wheel rotatably connected to the cushion platform, an outer plate synchronization belt transmission-connected to the outer plate drive wheel and the outer plate synchronization wheel, and an armrest width adjustment member that drives the outer plate drive wheel to rotate.

[0016] By adopting the above technical solution, the two armrests of a general single sofa are of equal specifications, so the distance between the armrest outer plate and the armrest inner plate on both sides of the cushion platform is adjusted synchronously to improve the adjustment efficiency.

[0017] Optionally, the two armrest inner plates are fixedly connected to a group of inner plate rods inserted into the cushion platform, the cushion platform is rotatably connected to several two-way screws with opposite thread directions on both sides, both ends of the two-way screws are threadedly connected to two opposite inner plate rods in the two groups, each two-way screw is coaxially fixed with an inner plate synchronous wheel at the center, the cushion platform is rotatably connected to the inner plate driving wheel, the inner plate synchronous wheel and the inner plate driving wheel are transmission-connected by an inner plate synchronous belt, and the cushion platform is provided with a cushion width adjustment part that enables the inner plate driving wheel to rotate.

[0018] By adopting the technical solution, the sofa cushions of different widths can be better adapted.

[0019] Optionally, the cushion platform includes a base connected to the inner plate of the armrest, a height adjustment block slidably connected to the base and for placing the cushion, a height adjustment screw rotatably connected to the base and threadedly connected to the height adjustment block, and a height adjustment member provided on the base and capable of driving the height adjustment screw to rotate.

[0020] By adopting the above technical solution, the lengths of the supporting legs of different sofas are also different, and the height of the height-adjusting block is changed to adapt to the assembly work of supporting legs of different lengths of different sofas.

[0021] Optionally, the height adjusting member is rotatably connected to the base, the height adjusting member is coaxially fixedly connected to a worm, and the worm is meshed with a worm wheel coaxially fixedly connected to the height adjusting screw.

[0022] By adopting the above technical solution, the cushion platform is not prone to change in height even when it is subjected to a certain gravity from the finished or semi-finished sofa.

[0023] Optionally, the vehicle track is provided with trackside cylinders at positions corresponding to the seat cushion station, armrest station and backrest station, and the trackside cylinder power rod is connected to a stop block that can move toward the guide rod to make the guide rod difficult to rotate.

[0024] By adopting the above technical solution, after the state of the assembled vehicle body in the horizontal plane is determined during the assembly process, the stop block can be forced to move toward the guide rod to limit the random rotation of the assembled vehicle body during the assembly process, so as to facilitate the assembly work.

[0025] Optionally, the braking block is fixedly connected with a block rack, and the guide rod is fixedly connected with a rod gear that can mesh with the block rack.

[0026] By adopting the above technical solution, it is further made difficult for the assembled vehicle body to be rotated arbitrarily after the position is determined.

[0027] In summary, the present application includes at least the following beneficial effects.

[0028] The assembly line is not easy to be set to a long length, which saves space. It also does not need to move a long distance to return to the initial position after completing the installation process of a sofa after assembling the body, which is also helpful for improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a plan view of the present application; Figure 2 It is a schematic diagram of the structure of the assembled vehicle body; Figure 3It is a structural schematic diagram showing a partial cross-section of the cushion platform and a lead screw in a cylinder shown in a dotted line; Figure 4 It is a structural schematic diagram of a partial section of the cushion platform from another perspective.

[0030] Description of the accompanying drawings: 1. Assemble the vehicle body; 2. Cushion station; 21. Height adjustment screw; 22. Height adjustment member; 23. Worm; 24. Worm wheel; 25. Track side cylinder; 26. Stop block; 27. Block rack; 28. Rod gear; 3. Handrail station; 31. Handrail width adjustment member; 32. Inner plate rod; 33. Bidirectional screw; 34. Inner plate synchronous wheel; 35. Inner plate driving wheel; 36. Inner plate synchronous belt; 37. Cushion width adjustment member; 38. Base; 39. Adjustment High block; 4. Backrest station; 41. Sleeve; 42. Armrest wide rod; 43. Screw in the cylinder; 44. Synchronous mechanism; 45. Screw gear; 46. Gear in the platform; 47. Outer plate synchronous wheel; 48. Outer plate driving wheel; 49. Outer plate synchronous belt; 5. Inspection station; 51. Track; 52. Cushion platform; 53. Universal wheel; 54. Guide rod; 55. Guide wheel; 56. Armrest inner plate; 57. Telescopic rod; 58. Armrest outer plate; 59. Leg board. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment discloses a sofa assembly line, referring to Figure 1 , including a track 51 pre-buried in the ground, the track 51 can be annular or elliptical and the surface is flush with the ground, a cushion station 2, an armrest station 3, a backrest station 4 and a testing station 5 are evenly arranged around the vertical center line of the outer circle of the track 51, and there are at least four assembly bodies 1 on the ground, the assembly body 1 is used to place the relevant parts and components for sofa assembly, the assembly body 1 moves along the direction of the track 51 and passes through the cushion station 2, the armrest station 3, the backrest station 4 and the testing station 5 in sequence, and moves in a continuous cycle, so that the cushion station 2 places the sofa cushion on the assembly body 1, and then the armrest station 3 assembles the two sofa armrests corresponding to the cushion, and then the backrest station 4 assembles the sofa back corresponding to the cushion to finally obtain the finished sofa, the testing station 5 performs quality inspection on the finished sofa, and then the finished sofa is sent away by a conveyor belt.

[0033] Reference Figure 2The assembled vehicle body 1 includes a cushion platform 52, which includes a base 38 and a height adjustment block 39. The base 38 is rotatably connected to universal wheels 53 at four corners on the ground. A vertical guide rod 54 is fixedly connected to the bottom surface of the base 38. A guide wheel 55 is coaxially rotatably connected to the bottom end of the guide rod 54. The width of the upper opening of the vehicle track 51 is smaller than the diameter of the guide wheel 55, so that the guide wheel 55 is located in the vehicle track 51 and is difficult to disengage.

[0034] Reference Figure 2 and Figure 3 There is a vertical armrest inner panel 56 at each of the two vertical sides where the length direction of the base 38 is located. The length direction of the armrest inner panel 56 is consistent with the length direction of the base 38. The two armrest inner panels 56 are both installed with telescopic rods 57. The two telescopic rods 57 are connected to armrest outer panels 58 at the ends away from each other. The armrest outer panels 58 are located on the opposite sides of the two armrest inner panels 56. Each sofa armrest is placed between a nearby armrest outer panel 58 and an armrest inner panel 56, and the bottoms of the two armrest outer panels 58 that are close to the vertical sides are fixedly connected with horizontal leg plates 59, and the leg plates 59 are used to place the supporting legs at the bottom of the sofa armrests.

[0035] Reference Figure 3 , each armrest inner plate 56 is fixedly connected to two inner plate rods 32 on the vertical side facing the base 38, the two inner plate rods 32 are plugged and slidably connected to the base 38 along the width direction of the base 38, and the base 38 is rotatably connected to two bidirectional lead screws 33 with opposite thread directions on both sides of the center point, and each bidirectional lead screw 33 is connected to the two inner plate rods 32 at both ends in a one-to-one correspondence. The two bidirectional lead screws 33 are coaxially fixedly connected to the inner plate synchronous wheel 34 at the middle of the length direction, and the base 38 is rotatably connected to the inner plate driving wheel 35 with a height higher than the inner plate synchronous wheel 34, and the inner plate synchronous belt 36 is connected between the two inner plate synchronous wheels 34 and the inner plate driving wheel 35. The outer surface of the base 38 is rotatably connected to the cushion width adjustment piece 37 coaxially fixedly connected to the inner plate driving wheel, and the assembler can use an inner hexagonal wrench to rotate the cushion width adjustment piece 37 so that when the width of the sofa cushion changes, the spacing between the two armrest inner plates 56 can be adjusted.

[0036] Reference Figure 3The telescopic rod 57 includes a sleeve 41 detachably connected to the armrest inner plate 56, the length direction of the sleeve 41 is consistent with the width direction of the base 38, two sleeves 41 are arranged on the vertical sides close to the two armrest inner plates 56, each sleeve 41 is sleeved along its own length direction and slidably connected with an armrest wide rod 42, the armrest wide rod 42 is penetrated by the armrest inner plate 56 and detachably connected to the bottom of the armrest outer plate 58, the leg plate 59 is located above the armrest wide rod 42, and each sleeve 41 is rotatably connected with an inner tube lead screw 43 which is plugged in and threadedly connected to the armrest wide rod 42, the axis of the inner tube lead screw 43 is inconsistent with the center line of the corresponding armrest wide rod 42, so that when the inner tube lead screw 43 rotates, the armrest wide rod 42 can move effectively.

[0037] Reference Figure 3 A synchronization mechanism 44 is provided in the base 38 for driving the lead screw 43 in the cylinder to rotate. The synchronization mechanism 44 includes four lead screw gears 45 which are rotatably connected to each sleeve 41 at one end away from the armrest wide rod 42. Each lead screw gear 45 is coaxially fixedly connected to the corresponding lead screw 43 in the cylinder. Two internal gears 46 are rotatably connected to the bottom of the base 38. The lower part of the internal gears 46 is exposed on the bottom surface of the base 38. Each internal gear 46 is meshed with two lead screw gears 45. The two internal gears 46 meshed with the same lead screw gear 45 have the same axis. The two inner gears 46 of the platform are coaxially fixedly connected with outer plate synchronous wheels 47 at the centers of their respective length directions; an outer plate driving wheel 48 which is higher than the outer plate synchronous wheel 47 is rotatably connected inside the base 38; an outer plate synchronous belt 49 is transmission-connected between one outer plate driving wheel 48 and two outer plate synchronous wheels 47; an armrest width adjusting piece 31 which is coaxially fixedly connected to the outer plate driving wheel 48 is rotatably connected to the outer surface of the base 38; the assembler can use a hexagonal wrench to rotate the armrest width adjusting piece 31 to change the spacing between an armrest inner plate 56 and the corresponding armrest outer plate 58 to adapt to sofa armrests of different widths.

[0038] Reference Figure 4 The height-adjusting block 39 is plugged in and slidably connected to the base 38 along the vertical direction. A height-adjusting screw 21 is rotatably connected inside the base 38 and is vertically and threadedly connected to the height-adjusting block 39. A worm gear 24 is coaxially fixedly connected to the bottom end of the height-adjusting screw 21. The worm gear 24 is meshed with a worm 23 which is horizontally and rotatably connected to the inside of the base 38. The worm 23 is coaxially fixedly connected to a height-adjusting piece 22 which is rotatably connected to the outer surface of the base 38. The assembler can use an inner hexagonal wrench to rotate the height-adjusting piece 22 to change the height of the height-adjusting block 39 to adapt to the supporting legs of the sofa armrests of different lengths.

[0039] Reference Figure 2The ground around the track 51 is detachably connected with the trackside cylinder 25 at the positions corresponding to the cushion station 2, the armrest station 3 and the backrest station 4. A cavity is formed in the ground and a protective box is placed in it for the trackside cylinder 25 to be placed in. The power rod of the trackside cylinder 25 is penetrated through the track 51. The power rod of the trackside cylinder 25 is detachably connected with a stop block 26 penetrated through the track 51. The stop block 26 is fixedly connected with a block rack 27 on the vertical surface of the guide rod 54. The guide rod 54 is coaxially fixedly connected with a rod gear 28. When the power rod of the trackside cylinder 25 is extended, the block rack 27 can engage with the rod gear 28, so that the guide rod 54 can no longer rotate, so as to limit the arbitrary rotation of the base 38 after the position adjustment in the horizontal plane is completed.

[0040] The implementation principle of a sofa assembly line in an embodiment of the present application is as follows: the assembly body 1 is first moved to the cushion station 2, the assembler places the cushion on the height adjustment block 39, and then the base 38 is moved to the armrest station 3, the assembler puts the armrest between the corresponding armrest outer panel 58 and the armrest inner panel 56 and connects it to the cushion, and then the base 38 is moved to the backrest station 4, the assembler assembles the backrest and the cushion, and the base 38 is then moved to the inspection station 5, the finished sofa is inspected and can be sent to the storage place through the conveyor belt.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sofa assembly line, characterized by: The invention comprises an assembly body (1), a seat cushion station (2) for placing a seat cushion on the assembly body (1), an armrest station (3) for connecting and assembling an armrest and a seat cushion on the assembly body (1), a backrest station (4) for connecting and assembling a backrest and a seat cushion on the assembly body (1), an inspection station (5) for testing a finished sofa, and a circular track (51) for the assembly body (1) to cyclically move. The seat cushion station (2), the armrest station (3), the backrest station (4) and the inspection station (5) are evenly arranged around the center line of the track (51).

2. A sofa assembly line according to claim 1, characterized in that: The assembled vehicle body (1) comprises a seat cushion platform (52) for placing a seat cushion, a universal wheel (53) rotatably connected to the seat cushion platform (52) so as to move the seat cushion platform (52), a guide rod (54) fixedly connected to the seat cushion platform (52), and a guide wheel (55) rotatably connected to the guide rod (54) and capable of moving only in the vehicle track (51), wherein the universal wheel (53) can roll over the upper surface of the vehicle track (51).

3. A sofa assembly line according to claim 2, characterized in that: The cushion platform (52) is provided with armrest inner plates (56) on opposite sides. The armrest inner plates (56) are detachably connected to telescopic rods (57). One end of the telescopic rod (57) passing through the connected armrest inner plates (56) is detachably connected to an armrest outer plate (58). The armrest outer plates (58) are fixedly connected to a legrest plate (59). The armrest inner plates (56) and the armrest outer plates (58) are for placing sofa armrests, and the legrest plates (59) are for placing sofa support legs.

4. A sofa assembly line according to claim 3, characterized in that: The telescopic rod (57) comprises a sleeve (41) detachably connected to the armrest inner plate (56), an armrest wide rod (42) plugged and slidably connected to the sleeve (41) and detachably connected to the armrest outer plate (58), an inner tube lead screw (43) rotatably connected to the sleeve (41) and threadedly connected to the armrest wide rod (42), and a synchronizing mechanism (44) for driving the inner tube lead screw (43) to rotate.

5. A sofa assembly line according to claim 4, characterized in that: The synchronization mechanism (44) comprises a screw gear (45) coaxially fixedly connected to the screw (43) in the cylinder, a gear (46) inside the platform rotatably connected to the cushion platform (52) and capable of meshing with the screw gear (45), an outer plate synchronization wheel (47) coaxially fixedly connected to the gear (46) inside the platform, an outer plate driving wheel (48) rotatably connected to the cushion platform (52), an outer plate synchronization belt (49) transmission-connected to the outer plate driving wheel (48) and the outer plate synchronization wheel (47), and an armrest width adjustment member (31) for driving the outer plate driving wheel (48) to rotate.

6. The sofa assembly line according to claim 3, characterized in that: The two armrest inner plates (56) are fixedly connected to a group of inner plate rods (32) inserted into the cushion platform (52); the cushion platform (52) is rotatably connected to a plurality of bidirectional lead screws (33) with opposite thread directions on both sides; both ends of the bidirectional lead screws (33) are threadedly connected to two inner plate rods (32) facing each other in the two groups in a one-to-one manner; each bidirectional lead screw (33) is coaxially fixedly connected to an inner plate synchronous wheel (34) at the center; the cushion platform (52) is rotatably connected to an inner plate driving wheel (35); the inner plate synchronous wheel (34) and the inner plate driving wheel (35) are transmission-connected to an inner plate synchronous belt (36); and the cushion platform (52) is provided with a cushion width adjustment member (37) for rotating the inner plate driving wheel (35).

7. The sofa assembly line according to claim 3, characterized in that: The seat cushion platform (52) comprises a base (38) connected to an armrest inner plate (56), a height adjustment block (39) slidably connected to the base (38) and on which the seat cushion is placed, a height adjustment screw (21) rotatably connected to the base (38) and threadedly connected to the height adjustment block (39), and a height adjustment member (22) disposed on the base (38) and capable of driving the height adjustment screw (21) to rotate.

8. The sofa assembly line according to claim 7, characterized in that: The height adjustment member (22) is rotatably connected to the base (38), the height adjustment member (22) is coaxially fixedly connected to a worm (23), and the worm (23) is meshed with a worm wheel (24) coaxially fixedly connected to the height adjustment lead screw (21).

9. The sofa assembly line according to claim 2, characterized in that: The vehicle track (51) is provided with a trackside cylinder (25) at positions corresponding to the seat cushion station (2), the armrest station (3) and the backrest station (4), and a power rod of the trackside cylinder (25) is connected to a stop block (26) that can move toward the guide rod (54) to make the guide rod (54) difficult to rotate.

10. The sofa assembly line according to claim 9, characterized in that: The braking block (26) is fixedly connected to a block rack (27), and the guide rod (54) is fixedly connected to a rod gear (28) capable of meshing with the block rack (27).

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