A method for wrapping the bottom leg of a sofa

Abstract

The present invention discloses a method for wrapping the edge of a sofa foot, wherein the sofa foot includes an annular first tube member. When using flannel to wrap the annular first tube member, the flannel first passes through a roller and is then inserted between two roller brushes. The roller pushes the flannel to stick to the outer wall of the first tube member, completing the initial positioning of the flannel wrapping. Then, the two roller brushes push the flannel with their tough bristles to cause deformation, so that the flannel moves from the outside of the first tube member to the inside of the first tube member, and then gradually wraps the first tube member. Moreover, such a method is not limited to the structure of the first tube member. The tough bristles on the roller brushes can be adaptively deformed according to the structure of the first tube member, so that the flannel is tightly attached to the outer wall of the first tube member. The present invention more reasonably limits the order of flannel wrapping, so that the flannel can be wrapped on the first tube member more regularly.

Description

Technical Field

[0001] The invention relates to the field of packaging and transportation, and in particular to a method for wrapping the edges of sofa legs. Background Art

[0002] In order to protect the sofa feet, which often collide with other objects during transportation and use, the sofa feet are usually covered with velvet to protect the surface. The velvet covering of the sofa feet is usually done manually, but the efficiency of manual hemming is low, and the velvet wrapped on the sofa feet always has large wrinkles, and the positions of the folds on each sofa foot are not uniform. Moreover, even if the same person wraps the velvet on the same batch of sofa feet, the consistency of the finished products cannot be guaranteed. Summary of the Invention

[0003] In order to solve the problems in the prior art, the purpose of the present invention is to provide a method for wrapping the edges of sofa legs, in which the velvet cloth can wrap the sofa legs more regularly, the wrinkles on the velvet cloth wrapped on the sofa legs are more uniform or even disappear, and the wrapping efficiency is higher, and the consistency of each finished product is better.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a method for wrapping the edges of sofa feet, wherein the sofa feet include an annular first pipe member, including a workbench, a foot fixing seat, a roller, and two roller brushes, wherein the foot fixing seat, the roller, and the two roller brushes are all capable of rotating on the workbench, wherein the axes of the foot fixing seat and the roller are arranged in a front-to-back direction, the axis of the roller is arranged in a vertical direction, the surface of the foot fixing seat for mounting the sofa feet is arranged forward, the roller and the two roller brushes are both located below the foot fixing seat, the roller is located on the left side of the roller brush, the two roller brushes are arranged front-to-back relative to each other, and the roller and the two roller brushes are all mounted on the workbench in a liftable manner; the specific steps of wrapping the edges of the sofa feet are as follows:

[0005] Step 1) Fix the sofa foot to the foot fixing base; wherein the axis of the first tube is coaxial with the rotation axis of the foot fixing base, and the roller and the two roller brushes are located below the first tube;

[0006] Step 2) Pull the flannel so that one end of the flannel passes between the roller and the first tube, and then passes between the roller brush and the first tube; wherein the side of the flannel coated with glue faces the first tube, and the side of the flannel not coated with glue faces the roller and the two roller brushes;

[0007] In step 3, the roller and the two roller brushes move upward; the two roller brushes move upward, so that the first tube is inserted between the two roller brushes, and the flexible bristles on the roller brushes push the velvet cloth, so that the velvet cloth between the roller brushes and the first tube fits the first tube and covers the tube wall of the first tube; when the roller moves upward, the roller pushes the velvet cloth between the roller and the first tube, so that the velvet cloth sticks to the tube wall of the first tube;

[0008] In step 4, the foot fixing seat rotates and drives the sofa foot to rotate counterclockwise, so that the flannel passes through the roller and two roller brushes in sequence, and then gradually wraps the first tube of the sofa foot. In the process of flannel wrapping, the roller first fits the flannel and the tube to basically position the flannel and the first tube, and then passes the positioned flannel through the two roller brushes, which wrap the positioned flannel around the first tube.

[0009] Step 5): When the flannel completely wraps the first tube, the foot fixing seat stops rotating and the sofa foot is removed from the foot fixing seat.

[0010] Preferably, the roller brush is located below the right side portion of the first tube; in the step 3), after the first tube is inserted between the two roller brushes, one end of the flannel is attached to the right side portion of the first tube; in the step 4), when the first tube rotates counterclockwise, the first tube moves from the lower left to the upper right and is gradually inserted between the two roller brushes, and the bristles of the roller brush push the flannel, so that the flannel gradually wraps the first tube from the outside of the first tube to the inside of the first tube.

[0011] Preferably, a positioning groove is provided on the outer peripheral surface of the roller that abuts against the flannel. In steps 3) and 4), after the roller moves upward, the first tube is inserted into the positioning groove of the roller, and the inner wall of the positioning groove pushes the flannel to deform the flannel, giving the flannel a tendency to cover the first tube, so that the roller brush can more easily wrap the first tube with the flannel.

[0012] Preferably, the positioning groove is arc-shaped.

[0013] Preferably, the radial cross-section of the positioning groove is larger than the radial cross-section of the first pipe.

[0014] Preferably, the rotation axis of the roller is located directly below the rotation axis of the base fixing seat.

[0015] Preferably, some of the bristles of the two roller brushes overlap; in the above steps 3) and 4), the bristles of the two roller brushes located on the inner side of the first tube overlap, and the bristles of the two roller brushes located on the outer side of the first tube overlap, so that the two roller brushes completely cover the first tube.

[0016] Preferably, the length of the flannel is greater than the outer circumference of the first tube.

[0017] Preferably, the first pipe is a round pipe.

[0018] Preferably, a second tube member is arranged in a crisscross pattern inside the first tube member, and a plurality of quick clips are provided on the foot fixing seat; in the step 1), the plurality of quick clips on the foot fixing seat press the second tube member to fix the sofa foot on the foot fixing seat; in the step 5), the sofa foot is quickly removed from the foot fixing seat by the quick clips.

[0019] The beneficial effects created by the present invention are as follows: when using the flannel to wrap the annular first tube fitting, it first passes through the roller and then is inserted between the two roller brushes. The roller pushes the flannel to stick to the outer wall of the first tube fitting, completing the initial positioning of the flannel wrapping. Then the two roller brushes push the flannel with their tough bristles to deform the flannel, so that the flannel moves from the outside of the first tube fitting to the inside of the first tube fitting, and then gradually wraps the first tube fitting. Moreover, such a method is not limited to the structure of the first tube fitting. The tough bristles on the roller brush can be adaptively deformed according to the structure of the first tube fitting, so that the flannel is tightly attached to the outer wall of the first tube fitting. In this solution, the order of flannel wrapping is limited, so that the flannel can be wrapped on the first tube fitting more regularly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the sofa foot hemming machine Figure 1 ;

[0021] Figure 2 Schematic diagram of the structure of the sofa foot hemming machine Figure 2 ;

[0022] Figure 3 Schematic diagram of the feeding device Figure 1 ;

[0023] Figure 4 Schematic diagram of the feeding device Figure 2 ;

[0024] Figure 5 Schematic diagram of the cutting device Figure 1 ;

[0025] Figure 6 Schematic diagram of the cutting device Figure 2 ;

[0026] Figure 7 It is a structural diagram of the jacking device;

[0027] Figure 8 Schematic diagram of the fixing device Figure 1 ;

[0028] Figure 9 Schematic diagram of the structure of the fixing device Figure 2 ;

[0029] Figure 10 Schematic diagram of the fixing device Figure 3 ;

[0030] Figure 11 Schematic diagram of the structure of the traction device.

[0031] Reference numerals: 2, workbench; 3, feeding device; 31, clamping plate; 32, mounting plate; 321, fourth bracket; 33, packing roller; 34, locking plate; 35, first finishing roller; 36, second finishing roller; 37, third finishing roller; 38, fourth finishing roller; 39, fifth finishing roller; 4, cutting device; 41, first bracket; 42, 43, 431, second cylinder; 432, first connecting plate; 433, first connecting column; 435, second slide; 44, cutting knife; 441, first positioning plate; 442, second slide rail; 443, third slide; 444, third air cylinder; 45, first feed rail; 451, support column; 452, first position limiter; 46, press plate; 461, first air cylinder; 462, second positioning plate; 463, first guide rod; 5, glue spraying device; 50, glue barrel; 51, glue gun; 52, ninth mounting base; 53, liquid collecting box; 54, baffle; 6, lifting device; 61, second feed rail; 610, second position limiter; 611, fifth air cylinder; 612, fourth positioning plate; 613, second connecting column; 614, second guide rod; 62, roller; 621, positioning groove; 622 , seventh mounting seat; 623, third guide rod; 624, eighth mounting seat; 63, roller brush; 631, sixth cylinder; 632, fifth positioning plate; 64, support plate; 7, fixing device; 71, second bracket; 72, main shaft; 73, bottom foot fixing seat; 731, second limiting plate; 732, sixth mounting seat; 74, limiting clamping claw; 741, fifth mounting seat; 75, second motor; 751, reducer; 752, small gear; 753, mounting bracket; 754, large gear; 76, first trigger assembly; 77, first stroke detection assembly; 771, first Three mounting seats; 78. Pneumatic rotary joint; 79. Fourth mounting seat; 8. Traction device; 81. Second bracket; 811. Fourth slider; 82. Third slide rail; 83. First motor; 84. Transmission belt; 841. First mounting seat; 842. Second mounting seat; 843. First pulley; 844. Second pulley; 85. Fourth cylinder; 86. Third positioning plate; 87. Traction clamp; 88. Second trigger assembly; 89. Second stroke detection assembly; 91. Flannel; 92. Sofa foot; 921. First pipe fitting; 922. Second pipe fitting; 93. Controller. Implementation Method

[0032] The following describes embodiments of the present invention in detail, 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 are not to be construed as limiting the present invention.

[0033] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, a feature specified 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 explicitly specified.

[0035] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] The orientation described in the following embodiment 1 is Figure 1The position of the glue barrel 50 is the left, the position of the third bracket 71 is the back, and the position of the workbench bracket 1 is the bottom. Example

[0038] like Figure 1-11 The illustrated method for wrapping the base of a sofa comprises a workbench 2, a base fixing seat 73, a roller 62, and two roller brushes 63. The base fixing seat 73, the roller 62, and the two roller brushes 63 are all capable of rotating on the workbench 2. The axes of the base fixing seat 73 and the roller 62 are arranged in a front-to-back direction, and the axis of the roller 62 is arranged in a vertical direction. The mounting surface of the base fixing seat 73 for mounting the sofa base 92 is arranged forward. The roller 62 and the two roller brushes 63 are all located below the base fixing seat 73. The roller 62 is located on the left side of the roller brush 63. The two roller brushes 63 are arranged front-to-back relative to each other. The roller 62 and the two roller brushes 63 are all mounted on the workbench 2 in a liftable manner. The sofa base 92 comprises an annular first pipe member 921.

[0039] The specific steps for 92 edging the sofa legs are as follows:

[0040] Step 1) Fix the sofa foot 92 to the foot fixing base 73; wherein the axis of the first tube 921 is coaxial with the rotation axis of the foot fixing base 73, and the roller 62 and the two roller brushes 63 are located below the first tube 921;

[0041] Step 2) Pull the flannel so that one end of the flannel passes between the roller and the first tube, and then passes between the roller brush and the first tube; wherein the side of the flannel coated with glue faces the first tube, and the side of the flannel not coated with glue faces the roller and the two roller brushes;

[0042] In step 3, the roller 62 and the two roller brushes 63 move upward; the two roller brushes 63 move upward, so that the first tube 921 is inserted between the two roller brushes 63, and the flexible bristles on the roller brushes 63 push the velvet 91, so that the velvet 91 between the roller brushes 63 and the first tube 921 fits with the first tube 921, and the velvet 91 covers the tube wall of the first tube 921; when the roller 62 moves upward, the roller 62 pushes the velvet 91 between the roller 62 and the first tube 921, so that the velvet 91 sticks to the tube wall of the first tube 921;

[0043] Step 4), the foot fixing seat 73 rotates and drives the sofa foot 92 to rotate counterclockwise, so that the flannel 91 passes through the roller 62 and the two roller brushes 63 in sequence, and then the flannel 91 gradually wraps the first tube 921 of the sofa foot 92; wherein, during the process of the flannel 91 wrapping, the roller 62 first fits the flannel 91 with the tube, so that the flannel 91 and the first tube 921 are basically positioned, and then the positioned flannel 91 passes through the two roller brushes 63, and the roller brushes 63 wrap the positioned flannel 91 on the first tube 921;

[0044] In step 5, when the flannel 91 completely wraps the first tube 921 , the foot fixing seat 73 stops rotating and the sofa foot 92 is removed from the foot fixing seat 73 .

[0045] With such a configuration, in the above method, when the flannel 91 wraps around the first tube 921, it first passes through the roller 62, and the roller 62 pushes the flannel 91 to stick to the outer wall of the first tube 921. At this time, the initial positioning of the flannel 91 is completed, and then the two roller brushes 63 push the flannel 91 with their tough bristles to deform, so that the flannel 91 moves from the outside of the first tube 921 to the inside of the first tube 921, and then gradually wraps the first tube 921. Moreover, such a method is not limited to the structure of the first tube 921. The tough bristles on the roller brush 63 can be adaptively deformed according to the structure of the first tube 921, so that the flannel 91 is close to the outer wall of the first tube 921. In this scheme, the present invention more reasonably limits the order of flannel wrapping, so that the flannel can be wrapped on the first tube more regularly.

[0046] A hemming machine using the above-mentioned hemming method, the hemming machine includes the workbench 2, a controller 93, a glue spraying device 5, a cutting device 4, a traction device 8, a fixing device 7 and a lifting device 6; the glue spraying device 5 includes a glue gun 51 for spraying glue to the velvet 91, and the glue gun 51 is installed on the workbench 2; the cutting device 4 includes a cutting knife 44 for cutting the velvet 91 to a fixed length; the fixing device 7 includes a foot fixing seat 73 for mounting a sofa foot 92, and the foot fixing seat 73 is rotatably mounted on the workbench 2; the traction device 8 includes a traction clamp 87 for pulling the velvet 91, and the traction clamp 87 is slidably mounted on the workbench 2; the lifting device 6 includes the roller 62 and the two roller brushes 63, and the roller 62 and the two roller brushes 63 are It can rotate on the workbench 2, and the roller 62 and the two roller brushes 63 are installed on the workbench 2 in a liftable manner; wherein the cutting knife 44, the glue gun 51 and the base fixing seat 73 are arranged in sequence from left to right, the roller 62 and the two roller brushes 63 are all located below the base fixing seat 73, the roller 62 is located on the left side of the roller brush 63, and the two roller brushes 63 are arranged front and back, and the traction clamp 87 can slide left and right below the cutting knife 44, the glue gun 51 and the base fixing seat 73, and the traction clamp 87 can pull the velvet 91 so that the velvet 91 passes over the roller 62 and the two roller brushes 63. After the roller 62 and the two roller brushes 63 move up, the roller 62 can abut against the edge of the sofa base 92, and the sofa base 92 can be inserted between the two roller brushes 63; The workbench 2 is also equipped with a first stroke detection component 77 and multiple second stroke detection components 89. The base fixing seat 73 is equipped with multiple first trigger components 76 for triggering the first stroke detection component 77, and the first trigger component is arranged around the rotation axis of the base fixing seat 73; multiple second stroke detection components 89 are arranged on the sliding path of the traction clamp 87, and the traction clamp 87 is equipped with a second trigger component 88 for triggering the second stroke detection component 89; the first stroke detection component 77 and the multiple second stroke detection components 89 are electrically connected to the controller 93.

[0047] In the above step 1), the size of the sofa foot 92 is input on the controller 93, and the sofa foot 92 is fixed on the foot fixing seat 73; in the above step 2), the traction clamp 87 clamps the end of the velvet 91 located on the left side of the cutting knife 44, and the traction clamp 87 slides to the right to pull the velvet 91 to move. After passing through the cutting knife 44, the velvet 91 passes under the glue gun 51, and the glue sprayed by the glue gun 51 covers the upper surface of the velvet 91; in the above step 3), when the traction clamp 87 pulls the velvet 91 to move above the roller brush 63, the traction clamp 87 stops moving and releases the velvet 91, and then the roller 62 and the roller brush 63 move upward. , the roller 62 moves up to push the velvet 91 so that it sticks to the edge of the sofa foot 92, and the two roller brushes 63 move up to insert the sofa foot 92 between the two roller brushes 63. The bristles of the two roller brushes 63 that are close to the sofa foot 92 are deformed, and the bristles push the velvet 91 under their own toughness, so that the velvet 91 wraps the edge of the sofa foot 92; wherein, if the required length of the velvet 91 for hemming is less than the total stroke of the traction clamping jaw 87 sliding from left to right, then when the actual sliding distance of the traction clamping jaw 87 matches the length of the velvet 91, the traction clamping jaw 87 stops moving, and the cutting knife 44 cuts the velvet 91, and then The traction clamp 87 continues to move; wherein, the actual movement distance of the traction clamp 87 is determined by the number of the second stroke detection components 89 triggered by the second trigger component 88; in the above step 4), the foot fixing seat 73 rotates and drives the sofa foot 92 to rotate. When the foot fixing seat 73 rotates, the first trigger component is disengaged from the first stroke detection component 77. Since the end of the flannel 91 is already stuck to the sofa foot 92, the sofa foot 92 rotates so that the flannel 91 can be pulled to move. When the flannel 91 moves, it is first stuck to the edge of the sofa foot 92 by the roller 62, and then the bristles of the roller brush 63 will stick to the end of the flannel 91. The velvet 91 on the edge of 92 is in contact with the sofa foot 92 and wraps the edge of the sofa foot 92; wherein, if the required length of the velvet 91 for edging is greater than the total sliding stroke of the traction clamp 87 from left to right, the velvet 91 is cut during the rotation of the foot fixing seat 73; wherein, the length of the velvet 91 for edging is calculated based on the total sliding stroke of the traction clamp 87 from left to right and the rotation angle of the foot fixing seat 73; in the above step 5), when the foot fixing seat 73 rotates one circle, the edge of the sofa foot 92 has been edged, the foot fixing seat 73 stops rotating, and the sofa foot 92 is removed from the foot fixing seat 73.

[0048] With such an arrangement, the above structure and method can be used to wrap the edges of sofa feet 92 of different specifications, and due to the arrangement of the roller 62 and the brush, the positioning reference of the flannel 91 and the edge of the roller 62 is consistent, and the roller 62 wrapped around the sofa foot 92 is more neat and beautiful, avoiding rework, and because the bristles on the roller 62 brush have toughness, when the bristles on the roller brush 63 are pressed against the flannel 91, a accommodating space matching the edge of the sofa foot 92 is formed between the two roller brushes 63, and the shape and size of the accommodating space can be adaptively changed according to the structure of the edge of the sofa foot 92, and the flannel 91 is attached to the edge of the sofa foot 92, so that the present invention is not limited to the specifications of the sofa foot 92, nor is it limited to the structure of the edge contour of the sofa foot 92, and not only has a wide range of applications, but also the above structure can complete the fixed-length cutting and gluing of the flannel 91, further improving the efficiency of the hemming.

[0049] In this embodiment, Figure 1 、 Figure 5 and Figure 6 The cutting device 4 shown above includes a first bracket 41, which is vertically arranged and fixed on the workbench 2. Two first slide rails 42 are fixed to the right side of the first bracket 41. The first slide rails 42 are vertically arranged and arranged front to back. The cutting device 4 also controls two first sliders, which are respectively mounted on the two first slide rails 42. The two first sliders are fixedly connected by a first positioning plate 441. The cutting knife 44 is rotatably mounted on the first positioning plate 441. A first cylinder 461 is installed on the first bracket 41. A second positioning plate 462 is fixed to the telescopic end of the first cylinder 461. The second positioning plate 462 is fixed to the telescopic end of the first cylinder 461. The positioning plate 462 is fixedly connected to the first positioning plate 441, so that the first cylinder 461 can drive the first positioning plate 441 and the cutting knife 44 installed on the first positioning plate 441 to move up and down through the second positioning plate 462; the cutting device 4 also includes a base plate 43, on which two second sliders 435 are fixedly mounted, and the two second sliders 435 are respectively mounted on the two first slide rails 42. The base plate 43 is located directly below the cutting knife 44, and a second cylinder 431 is installed on the workbench 2. The telescopic end of the second cylinder 431 is fixedly connected to the base plate 43, and the second cylinder 431 can drive the base plate 43 to move closer to or away from the cutting knife 44.

[0050] Such arrangement makes the gap between the cutting knife 44 and the base plate 43 adjustable. When the cutting knife 44 cuts the velvet 91, the first cylinder 461 and the second cylinder 431 drive the cutting knife 44 and the base plate 43 to move away from each other, so that the traction clamp 87 can pass between the cutting knife 44 and the base plate 43, and then clamp the velvet 91 located on the left side of the cutting knife 44. This can greatly reduce the difficulty of feeding the velvet 91 and improve the efficiency of edging the sofa foot 92.

[0051] In this embodiment, the length of the flannel 91 required for the hemming is greater than the outer circumference of the first tube 921. This allows one end of the flannel 91 to secure the other end, preventing the end of the flannel 91 initially adhered to the first tube 921 from being loosely adhered. This also increases the error tolerance and prevents the flannel 91 from being automatically cut too short.

[0052] In this embodiment, Figure 5 As shown, a second slide rail 442 is installed on the first positioning plate 441, and the second slide rail 442 extends in the front-to-back direction. A third slider 443 is installed on the second slide rail 442, and the cutting knife 44 is rotatably installed on the third slider 443. A third cylinder 444 is installed on the first bracket 41, and the telescopic end of the third cylinder 444 is connected to the third slider 443, so that the third cylinder 444 can drive the third slider 443 to drive the cutting knife 44 to slide back and forth to cut the velvet 91; in this embodiment, the cutting knife 44 is the sofa foot 92, and the process of the cutting device 4 cutting the velvet 91 is as follows: the bottom plate 43 and the cutting knife 44 approach each other, the cutting knife 44 and the bottom plate 43 clamp the velvet 91, and then the third cylinder 444 drives the third slider 443 to drive the cutting to move forward, and the cutting knife 44 moves forward and rotates to cut the velvet 91.

[0053] Such an arrangement enables the cutting device 4 to cut flannel 91 of various widths and thicknesses, thereby increasing the applicability of the device.

[0054] In this embodiment, Figure 1 and Figure 2 As shown, a first avoidance hole is opened on the workbench 2, the lower part of the first bracket 41 is inserted into the first avoidance hole, a first connecting plate 432 is fixedly installed on the cylinder body of the second cylinder 431, two first connecting columns 433 are fixedly installed on the first connecting plate 432, the second cylinder 431 is located between the two first connecting columns 433, and the two ends of the first connecting column 433 are fixedly connected to the top of the first connecting plate 432 and the bottom of the workbench 2 respectively. The telescopic end of the second cylinder 431 extends upward and passes through the first avoidance hole and is fixedly connected to the bottom plate 43.

[0055] Such an arrangement hides some components and fully utilizes the space above and below the workbench 2, so that various devices can be better installed and positioned.

[0056] In this embodiment, Figure 6As shown, the cutting device 4 also includes a first feeding guide rail 45 and a pressing plate 46. The first feeding guide rail 45 extends in the left and right directions. The first feeding guide rail 45 is located on the left side of the base plate 43 and the cutting knife 44. The first feeding guide rail 45 is fixed on the first bracket 41. There are two first limiting parts 452 protruding on the first feeding guide rail 45. The two first limiting parts 452 are arranged front and back. The first feeding guide rail 45 is used to carry the velvet 91, and the velvet 91 is located between the two first limiting parts 452; the pressing plate 46 is installed on the second positioning plate 462, and the length of the pressing plate 46 in the front and back direction is not greater than the spacing between the two first limiting parts 452. When the velvet 91 is cut to a fixed length, the pressing plate 46 is inserted from top to bottom between the two first limiting parts 452, and the pressing plate 46 and the first feeding guide rail 45 clamp the velvet 91.

[0057] Such an arrangement can ensure that the flannel 91 does not deviate during the cutting process, thereby ensuring the stability of the cutting process.

[0058] Further preferably, two first guide rods 463 are fixed to the top of the press plate 46. The two first guide rods 463 are arranged in a front-to-rear manner. The two first guide rods 463 extend upward and penetrate the second positioning plate 462. The first guide rods 463 are slidably connected to the second positioning plate 462. The tops of the two first guide rods 463 are fixedly connected by a first limit plate. A first return spring is sleeved on the first guide rod 463, and the two ends of the first return spring respectively abut against the press plate 46 and the second positioning plate 462. This arrangement can improve the adaptability of the press plate 46 and allow the strokes of the press plate 46 and the cutting knife 44 to be different, thereby improving the fault tolerance and stability of the device.

[0059] Further preferably, the bottom surface of the first feeding guide rail 45 and the top surface of the workbench 2 are fixedly connected by a plurality of support columns 451 .

[0060] In this embodiment, Figure 11 As shown, the traction device 8 includes a third slide rail 82, which extends in the left and right directions and is fixed on the workbench 2. The third slide rail 82 is located on the rear side of the first bracket 41. A fourth slider 811 is installed on the third slide rail 82, and the second bracket 81 is installed on the fourth slider 811. A fourth cylinder 85 is installed on the second bracket 81. A third positioning plate 86 is installed on the telescopic end of the fourth cylinder 85. The traction clamp 87 is installed on the third positioning plate 86. The fourth cylinder 85 can drive the traction clamp 87 to slide in the up and down directions to adjust the height of the traction clamp 87.

[0061] In order to drive the traction clamping claw 87 to move left and right, in this embodiment, as shown in FIG. Figure 11As shown, the traction device 8 also includes a first motor 83, a first mounting seat 841 and a second mounting seat 842. The first mounting seat 841 and the second mounting seat 842 are arranged on the left and right. The first mounting seat 841 and the second mounting seat 842 are both fixed on the workbench 2. The first mounting seat 841 and the second mounting seat 842 are located on the rear side of the third slide rail 82. The first motor 83 is installed on the first mounting seat 841. A first pulley 843 is installed on the output end of the first motor 83. A second pulley 844 is rotatably installed on the second mounting seat 842. The first pulley 843 and the second pulley 844 are connected by a transmission belt 84. The second bracket 81 is fixedly connected to the transmission belt 84.

[0062] In this embodiment, the second stroke detection assembly 89 is disposed on the rear side of the third slide rail 82 , and the second trigger assembly 88 is mounted on the second bracket 81 .

[0063] In this embodiment, Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 and Figure 10 As shown, the fixing device 7 includes a third bracket 71, which is fixed on the workbench 2. The third bracket 71 is located on the rear side of the transmission belt 84, and the rear end of the base fixing seat 73 is installed with a main shaft 72, which extends in the front and rear directions and is rotatably installed on the third bracket 71; the fixing device 7 also includes a second motor 75 and a reducer 751, the second motor 75 is installed on the reducer 751, the second motor 75 is connected to the reducer 751 through a transmission connection, and the reducer 751 is installed on the third bracket 71 through a mounting bracket 753, and a large gear 754 is installed on the main shaft 72, and the large gear 754 is engaged with the small gear 752 of the reducer 751 for transmission; the first trigger assembly is installed on the main shaft 72, a third mounting seat 771 is installed on the third bracket 71, and the first stroke detection assembly 77 is installed on the third mounting seat 771. Further preferably, a fourth mounting seat 79 is mounted on the third bracket 71 , and a pneumatic rotary joint 78 is mounted on the fourth mounting seat 79 . The pneumatic rotary joint 78 is connected to the rear end of the main shaft 72 .

[0064] With such an arrangement, the cooperation between the motor and the reducer 751 can more accurately control the rotation angle of the base fixing seat 73, and the pneumatic rotary joint 78 can effectively control the start and stop of the base fixing seat 73, making the movement of the base fixing seat 73 more stable and the movement of the fixing device 7 more reliable.

[0065] Further preferably, in this embodiment, if Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 and Figure 10As shown, a plurality of second tubes 922 are disposed within the first tube 921, and the plurality of second tubes 922 are staggeredly arranged inside the first tube 921. The first tube 921 is a round tube, and the second tube 922 is a square tube. A fifth mounting seat 741 is fixedly mounted to the front end of the foot fixing seat 73, and a limit clamp 74 is mounted on the fifth mounting seat 741. In step 1), after the sofa foot 92 is secured to the foot mounting bracket 73, the first tube 921 is inserted between the two fingers of the limiting clamp 74. In step 3), after the first tube 921 is inserted between the two roller brushes 63, allowing the velvet 91 to wrap around the edge of the sofa foot 92, the two fingers of the limiting clamp 74 move toward each other to clamp the velvet 91 outside the roller brushes 63. In step 4), the limiting clamp 74 rotates with the foot mounting bracket 73 and maintains a constant clamping state. In step 5), after the sofa foot 92 is completely hemmed, the limiting clamp 74 releases. In other embodiments, the first tube 921 and the second tube 922 may also be tubes of other shapes.

[0066] With such a configuration, the limiting clamp 74 can ensure that the velvet 91 and the first tube 921 are in close contact with each other, which can effectively prevent the velvet 91 and the first tube 921 from sliding relative to each other during the rotation of the sofa foot 92 due to the velvet 91 not being in close contact with the first tube 921, thereby avoiding the mismatch between the length of the velvet 91 cut by the cutting device 4 and the sofa foot 92, and ensuring the stability of the fit.

[0067] More preferably, Figure 8As shown, the fixing device also includes a second limiting plate 731 and a plurality of quick clips, and the plurality of quick clips are all installed at the front end of the base fixing seat 73. The front end of the base fixing seat 73 is provided with a plurality of first threaded holes, and the second limiting plate 731 can be installed in and connected to the threaded holes different from the front end of the base fixing seat 73 through fasteners, so that the installation position of the second limiting plate 731 can match the sofa base 92 of different structures; in this embodiment, the front end of the sofa base 92 is also provided with a plurality of second threaded holes, and the quick clip is installed on the sixth mounting seat 732, and the sixth mounting seat 732 can be connected to the second threaded holes at different positions through fasteners, so that the installation position of the quick clip can match the sofa base 92 of different structures; wherein, the structure of the quick clip can refer to patent documents such as publication numbers CN204843937U, CN216759539U and CN212420482U. In the above step 1), the installation position of the second limiting plate 731 is adjusted according to the position of the second pipe 922 of the sofa foot 92. When installing the sofa foot 92 on the foot fixing base 73, the second pipe 922 is now mounted on the second limiting plate 731, and the axis of the first pipe 921 is coaxial with the rotation axis of the foot fixing base 73. Then, the handle of the quick rack is pressed down, so that the pressure head of the quick clamp presses the second pipe 922, so that the second pipe 922 is fitted with the foot fixing base 73, and the sofa foot 92 is fixed to the foot fixing base 73.

[0068] With this arrangement, the clamping and releasing of the sofa foot 92 can be completed quickly, and the installation position of the second limiting plate 731 and the quick clamp can be adjusted according to the specific structure of the sofa foot 92, so that the fixing device 7 can match sofa feet 92 of different structures.

[0069] In this embodiment, Figure 1 、 Figure 2 and Figure 7 As shown, the lifting device 6 also includes a second feeding guide rail 61 for carrying the flannel 91, and two second limiting portions 610 are protruded on the second feeding guide rail 61, and the two second limiting portions 610 are arranged front and back. The second feeding guide rail 61 is located between the glue gun 51 and the roller 62, and the second feeding guide rail 61 extends in the left and right directions, and the second feeding guide rail 61 is installed above the workbench 2 in a liftable manner; in the above step 2), the traction clamp 87 pulls the flannel 91 to pass over the second feeding guide rail 61, the roller 62 and the roller brush 63 in sequence, wherein the flannel 91 passes between the two second limiting portions 610 of the second feeding guide rail 61.

[0070] With such a configuration, the second feeding guide rail 61 can limit the position of the velvet 91 in the front-to-back direction, and the flat cloth entering between the roller 62 and the first tube 921 can be kept in a straight state, thereby better limiting the position of the roller 62 pushing the velvet 91, limiting the fitting position of the velvet 91 and the first tube 921, preventing the fitting position of the velvet 91 and the first tube 921 from shifting, and making the edging effect of the sofa foot 92 more regular and beautiful.

[0071] Further preferably, the heights of the second feeding guide 61, roller 62, and roller brush 63 are sequentially increased. Thus, in step 3), after the base fixing seat 73 rotates, the velvet 91 on the second feeding guide 61, roller 62, and roller brush 63 is tilted and tightened, so that the velvet 91 fits more regularly.

[0072] Further preferably, the rotation axis of the roller 62 is located directly below the rotation axis of the base fixing seat 73, and the roller brush 63 is located to the right of the roller 62. In step 1), the roller brush 63 is located below the right portion of the first tube 921. Thus, in step 3), the right portion of the first tube 921 is inserted between the two roller brushes 63. In step 4), the base fixing seat 73 rotates and drives the first tube 921 to rotate counterclockwise, causing the first tube 921 to move from the lower left to the upper right and gradually insert between the two roller brushes 63. The bristles of the brush push against the velvet 91, causing the velvet 91 to wrap from the outside of the first tube 921 to the inside of the first tube 921. This arrangement, through position adjustment, causes the velvet 91 to tend to wrap from the outside of the first tube 921 to the inside of the first tube 921, further improving the hemming effect.

[0073] Further preferably, a positioning groove 621 is recessed on the outer circumferential surface of the roller 62. In step 3), the first tube 921 is inserted into the positioning groove 621, and the inner wall of the positioning groove 621 pushes the velvet 91 to fit the first tube 921. The inner wall of the positioning groove 621 pushes the velvet 91, causing the portion not in contact with the first tube 921 to deform, thereby giving the velvet 91 a tendency to wrap around the first tube 921. With this arrangement, before the velvet 91 is wrapped around the first tube 921 by the two roller brushes 63, the roller 62 completes the fit and positioning of the velvet 91 and pre-deforms the velvet 91, allowing the roller brushes 63 to further wrap around the velvet 91 based on its deformation tendency. This further reduces the difficulty of the velvet 91 wrapping around the first tube 921 and improves the stability of the hemming of the sofa foot 92.

[0074] Furthermore, the positioning groove 621 is an arc-shaped groove, and the inner diameter of the cross-section of the positioning groove 621 is larger than the cross-sectional diameter of the first tube 921. This configuration allows the positioning groove 621 to match a wider range of sofa feet 92 in various sizes and shapes. In other embodiments, the positioning groove 621 can also have other shapes.

[0075] Further preferably, the bristles of the two roller brushes 63 partially overlap. In the above steps 3) and 4), the bristles of the two roller brushes 63 located inside the first tube 921 overlap, and the bristles of the two roller brushes 63 located outside the first tube 921 overlap, so that the two roller brushes 63 completely wrap the first tube 921, further improving the edging effect.

[0076] In order to drive the lifting and lowering of the second feeding guide rail 61, the roller 62, and the roller brush 63, in this embodiment, a fifth cylinder 611 is installed on the workbench 2. The telescopic end of the fifth cylinder 611 is connected to the bottom of the second feeding guide rail 61. A seventh mounting seat 622 is installed at the right end of the second feeding guide rail 61. The roller 62 and the roller brush 63 are both mounted on the seventh mounting seat 622. Furthermore, the workbench 2 is provided with a second avoidance hole. The cylinder body of the fifth cylinder 611 is mounted on a fourth positioning plate 612. The fourth positioning plate 612 is located below the workbench 2. Two second connecting columns 613 are fixedly mounted on the fourth positioning plate 612. The tops of the two second connecting columns 613 are connected to the bottom of the workbench 2. The two second connecting columns 613 are arranged front and back. The fifth cylinder 611 is located between the two second connecting columns 613. The telescopic end of the fifth cylinder 611 extends upward through the second avoidance groove and is connected to the bottom of the second feeding guide rail 61.

[0077] Further preferably, two vertically arranged second guide rods 614 are installed on the telescopic second feeding guide rail 61, the two second guide rods 614 are arranged on the left and right, the fifth cylinder 611 is located between the two second guide rods 614, and two guide sleeves 615 are fixedly installed on the workbench 2, and the two second guide rods 614 are respectively inserted into the guide sleeves and slidably connected.

[0078] Further preferably, the roller 62 is rotatably mounted on the eighth mounting seat 624. Two third guide rods 623 are fixedly mounted on the bottom of the eighth mounting seat 624. The two third guide rods 623 are arranged in a front-to-rear manner and extend downwardly through the seventh mounting seat 622. The third guide rods 623 and the seventh mounting seat 622 are slidably engaged with each other. A second return spring is sleeved on the third guide rod 623. The two ends of the second return spring respectively abut against the seventh mounting seat 622 and the eighth mounting seat 624. The bottoms of the two third guide rods 623 are fixedly connected by a third limit plate. In this arrangement, the roller 62 can move up and down relative to the second feeding guide rail 61 and can adapt to the contour of the first tube 921, ensuring that the flannel 91 can be attached to the first tube 921, avoiding excessive pressure between the roller 62 and the first tube 921, improving the fault tolerance of the device, and ensuring the device performance of the attachment.

[0079] Further preferably, a sixth cylinder 631 is mounted on the right end of the seventh mounting base 622, a fifth positioning plate 632 is disposed above the sixth cylinder 631, the telescopic end of the sixth cylinder 631 being connected to the bottom of the fifth positioning plate 632, and both roller brushes 63 are mounted on the fifth positioning plate 632. This arrangement allows the height of the roller brushes 63 to be adjusted relative to the second feed rail 61, allowing the unit to better match the sofa foot 92.

[0080] In this embodiment, a plurality of supporting plates 64 are fixedly mounted on the left end of the second feeding guide rail 61 . The plurality of supporting plates 64 are clearance-matched and are arranged front to back.

[0081] In this embodiment, Figure 1 As shown, the glue spraying device 5 also includes a glue barrel 50, a liquid collecting box 53, and a baffle 54. The glue gun 51 is fixed to the second bracket 81 via the ninth mounting seat 52. The baffle 54 is fixed to the ninth mounting seat 52 and is concave in shape. The baffle 54 surrounds the glue gun 51, and the glue gun 51 is located inside the baffle 54. The liquid collecting box 53 is fixed to the workbench 2 and is located below the glue gun 51. In steps 2), 3), and 4), the flannel 91 passes between the liquid collecting box 53 and the baffle 54. This arrangement can prevent glue splashing and affecting the operation of other components of the hemming machine.

[0082] Preferably, the left end of the liquid collecting box 53 is provided with an opening communicating with the interior thereof, and a support plate 64 fixed to the left end of the second feeding guide rail 61 is inserted into the liquid collecting box 53 through the opening; when the velvet 91 is cut, the left end of the velvet 91 is received by the support plate 64. This arrangement prevents the left end of the velvet 91 from swinging downward directly into the glue in the liquid collecting box 53 after being cut, thereby preventing the velvet 91 from being over-coated with glue.

[0083] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the hemming machine also includes a feeding device 3, the feeding device 3 includes a fourth bracket 321, a packing roller 33 is rotatably installed on the fourth bracket, the flannel 91 is wound around the packing roller 33 to form a flannel roll, two clamping plates 31 are installed on the packing roller 33, the flannel 91 roll is located between the two clamping plates 31, a locking plate 34 is sleeved on the packing roller 33, a locking pin 30 is threadedly connected to the locking plate 34, one end of the locking pin 30 extends from the locking plate 34, and the other end of the locking pin 30 can pass through the locking plate 34 and tighten with the packing roller 33.

[0084] Furthermore, the feeding device 3 also includes a mounting plate 32, and the fourth bracket 321 is fixedly connected to the mounting plate 32. The mounting plate 32 is fixed on the workbench 2. The front end of the mounting plate 32 is rotatably installed with multiple sorting rollers, and the multiple sorting rollers are staggered. The velvet 91 passes through the sorting rollers one by one and is sent to the first feeding guide rail 45.

[0085] In this embodiment, the plurality of finishing rollers include a first finishing roller 35, a second finishing roller 36, a third finishing roller 37, a fourth finishing roller 38, and a fifth finishing roller 39. The first finishing roller 35 is located at the top, the second finishing roller 36 is located to the lower left of the first finishing roller 35, the third finishing roller 37 is located to the lower right of the first finishing roller 35, the third finishing roller 37 is located to the upper right of the second finishing roller 36, the fourth finishing roller 38 is located to the lower right of the third finishing roller 37, the fourth finishing roller 38 is located to the lower right of the second finishing roller 36, the fifth finishing roller 39 is located to the upper right of the fourth finishing roller 38, and the fifth finishing roller 39 is located to the lower right of the third finishing roller 37. The right end of the fleece 91 is flattened by the first finishing roller 35, the second finishing roller 36, the third finishing roller 37, the fourth finishing roller 38, and the fifth finishing roller 39 before being fed onto the first feeding guide 45. This arrangement ensures that the fleece 91 remains flat before being attached to the sofa leg 92, preventing wrinkles from affecting the hemming effect.

[0086] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0087] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on 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.

Claims

1. A method for wrapping the base of a sofa, wherein the base of the sofa (92) comprises a first annular tube (921), characterized in that: The invention relates to an edge wrapping machine, comprising a workbench (2), a foot fixing seat (73), a roller (62) and two roller brushes (63), wherein the foot fixing seat (73), the roller (62) and the two roller brushes (63) are all capable of rotating on the workbench (2), wherein the axes of the foot fixing seat (73) and the roller (62) are arranged in a front-to-back direction, the axis of the roller (62) is arranged in a vertical direction, the surface of the foot fixing seat (73) for mounting the sofa foot (92) is arranged facing forward, the roller (62) and the two roller brushes (63) are all located below the foot fixing seat (73), the roller (62) is located on the left side of the roller brush (63), the two roller brushes (63) are arranged relative to each other in a front-to-back direction, and the roller (62) and the two roller brushes (63) are all mounted on the workbench (2) in a liftable manner; The specific steps for edging the sofa legs (92) are as follows: Step 1) Fixing the sofa foot (92) on the foot fixing seat (73); wherein the axis of the first tube (921) is coaxial with the rotation axis of the foot fixing seat (73), and the roller (62) and the two roller brushes (63) are located below the first tube (921); Step 2), pull the flannel (91) so that one end of the flannel (91) passes between the roller (62) and the first tube (921), and then passes between the roller brush (63) and the first tube (921); wherein the side of the flannel (91) coated with glue faces the first tube (921), and the side of the flannel (91) not coated with glue faces the roller (62) and the two roller brushes (63); In step 3, the roller (62) moves upward to push the flannel (91) between the roller (62) and the first tube (921), so that the flannel (91) is attached to the first tube (921); the two roller brushes (63) move upward, and the first tube (921) is inserted between the two roller brushes (63), and the tough bristles on the roller brushes (63) push the flannel (91), so that the flannel (91) wraps the first tube (921) from the outside to the inside; Step 4), the foot fixing seat (73) drives the sofa foot (92) to rotate counterclockwise, and the sofa foot (92) pulls the flannel (91) to move, so that the flannel (91) first sticks to the first tube (921) through the roller (62), and then the tough bristles on the roller brush (63) push the flannel (91) stuck on the first tube (921), so that the flannel (91) wraps the first tube (921) from the outside to the inside; Step 5), after the first pipe (921) is finished with the edge wrapping, the foot fixing seat (73) stops rotating, and then the sofa foot (92) is removed from the foot fixing seat (73).

2. A sofa foot edging method according to claim 1, characterized in that: The roller brush (63) is located below the right side of the first tube (921); in the step 3), after the first tube (921) is inserted between the two roller brushes (63), one end of the flannel (91) is attached to the right side of the first tube (921); in the step 4), when the first tube (921) rotates counterclockwise, the first tube (921) moves from the lower left to the upper right and gradually inserts between the two roller brushes (63), and the bristles of the roller brush (63) push the flannel (91), so that the flannel (91) gradually wraps the first tube (921) from the outside of the first tube (921) to the inside of the first tube (921).

3. The method for wrapping the bottom edge of a sofa according to claim 1, characterized in that: A positioning groove (621) is provided on the outer peripheral surface of the roller (62) that contacts the flannel (91). In the steps 3) and 4), after the roller (62) moves upward, the first tube (921) is inserted into the positioning groove (621) of the roller (62). The inner wall of the positioning groove (621) pushes the flannel (91) to deform the flannel (91), giving the flannel (91) a tendency to cover the first tube (921), so that the roller brush (63) can more easily cover the first tube (921) with the flannel (91).

4. The method for wrapping the bottom edge of a sofa according to claim 3, characterized in that: The positioning groove (621) is arc-shaped.

5. The method for wrapping the bottom edge of a sofa according to claim 3, characterized in that: The radial cross-section of the positioning groove (621) is larger than the radial cross-section of the first tube (921).

6. The method for wrapping the bottom edge of a sofa according to claim 1, characterized in that: The rotation axis of the roller (62) is located directly below the rotation axis of the base fixing seat (73).

7. The method for edging a sofa leg according to claim 1, characterized in that: Part of the bristles of the two roller brushes (63) overlap; in the above steps 3) and 4), the bristles of the two roller brushes (63) located inside the first tube (921) overlap, and the bristles of the two roller brushes (63) located outside the first tube (921) overlap, so that the two roller brushes (63) completely cover the first tube (921).

8. The method for edging a sofa leg according to claim 1, characterized in that: The length of the flannel (91) is greater than the outer circumference of the first tube (921).

9. The method for wrapping the bottom edge of a sofa according to claim 1, characterized in that: The first pipe member (921) is a round pipe.

10. The method for wrapping the bottom edge of a sofa according to claim 1, characterized in that: A second pipe member (922) is arranged in a crisscross pattern within the first pipe member (921), and a plurality of quick clamps are provided on the foot fixing seat (73); in the step 1), the plurality of quick clamps on the foot fixing seat (73) press the second pipe member (922), so that the sofa foot (92) is fixed to the foot fixing seat (73); in the step 5), the sofa foot (92) is quickly removed from the foot fixing seat (73) by the quick clamps.

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