Cutting device for sand publishing processing

Abstract

The present application belongs to the technical field of sofa production equipment, and particularly relates to a cutting device for sofa production. The present application provides a cutting device for sofa production, which can be used to fix a circular knife with holes on a two-purpose threaded shaft unit through the setting of a circular knife with holes, a shaft hole, a roller hole, a belt shaft roller unit, a hollow roller unit and a two-purpose threaded shaft unit on a U-shaped frame body, so as to provide a variable cutting ratio, and can align the circular knife with holes, and separate two bundles of cut cloth, thereby ensuring the use of the cut sofa cloth to be more convenient.

Description

Technical Field

[0001] This invention belongs to the technical field of sofa manufacturing equipment, and particularly relates to a cutting device for sofa fabric processing. Background Technology

[0002] Common sofa fabrics are generally made of materials such as pure cotton, linen, silk, velvet, blended fabrics, leather, and technical fabrics. However, when these fabrics are used on sofa frames, they usually need to be cut to the appropriate width. This cutting process requires the use of fabric cutting equipment.

[0003] Existing fabric cutting equipment mainly consists of a frame and a cutting blade. For fabrics that are too wide, the unwinding roller is on one side of the cutting blade, and the take-up roller is on the other side. Finally, by turning on the cutting blade and the take-up roller, the most basic fabric width cutting effect can be achieved.

[0004] In addition, additional structures, such as combing structures, lint removal structures, and edge-pressing structures, can be set between the cutting blade position and the unwinding roller position to further optimize the fabric cutting effect.

[0005] For example, Chinese utility model patent with patent publication number CN217149677U and publication date of August 9, 2022 discloses a sofa fabric cutting device, including a housing, a rotary motor fixedly mounted on the housing, a horizontal rotary shaft connected to the output end of the rotary motor, a wheel-type cutting blade fixedly mounted on the rotary shaft, a fabric roll perpendicular to the cutting blade wheel surface on the housing, and a pressing mechanism between the rotary shaft and the fabric roll. The pressing mechanism includes a pressing column parallel to the fabric roll and a support rod, and a locking component on the support rod that locks the pressing column after sliding.

[0006] The sofa fabric cutting device in this utility model patent has the following structure, principle and advantages: The rotary motor starts and drives the rotary shaft to rotate. At this time, the cutting blade fixedly sleeved on the rotary shaft rotates with the rotary shaft and is in working state. The operator pulls the fabric to be cut on the fabric roll. During the pulling process, the fabric passes under the pressure column. The fabric is continuously pulled and passes through the cutting blade. The cutting blade can cut the fabric. After that, the cut fabric is wound on the take-up roll.

[0007] However, in actual use, this cutting device still has at least two shortcomings, which are also the technical problems that this invention aims to solve:

[0008] First, two bundles of fabric of suitable width obtained from cutting can only be wound together on a single take-up shaft. Therefore, the subsequent use of these two bundles of fabric is very troublesome. Generally, the two bundles of fabric can only be unwound and used at the same time, which is very inefficient.

[0009] Secondly, the position of its cutting blade is difficult to move and adjust laterally, so it can generally only obtain one cutting ratio, such as a 3:7 ratio on the width. It is not suitable when the width of the fabric to be cut needs to be 4:6.

[0010] Therefore, in summary, there is an urgent need for a flexible cutting machine that allows the two bundles of fabric to be cut separately and has an adjustable width cutting ratio, for the production of various sofas with fabric. Summary of the Invention

[0011] This invention provides a cutting device for sofa fabric processing. By configuring a circular perforated knife, frame shaft holes, roller holes, a shaft roller unit, a hollow roller unit, and a dual-purpose threaded shaft unit on a U-shaped frame, the following features are achieved: 1. The circular perforated knife can slide and then be fixed on the dual-purpose threaded shaft unit, ultimately providing a variable cutting ratio; 2. The shaft roller unit and the hollow roller unit can both align with the circular perforated knife and separate two bundles of cut fabric, ensuring a more convenient use of the sofa fabric after cutting.

[0012] The technical solution adopted by the present invention to solve the above problems is: a cutting device for sofa fabric processing, the structure of which includes a U-shaped frame, a circular perforated knife, and a frame shaft hole, and also includes a roller hole provided on the U-shaped frame, a shaft roller unit and a hollow roller unit respectively inserted into and screwed to the two roller holes and used to respectively wind up two bundles of cut fabric, and a dual-purpose threaded shaft unit used to fit the circular perforated knife when cutting the fabric and to install the hollow roller unit when unwinding the cut fabric.

[0013] A further preferred technical solution is that the shafted roller unit includes a roller body for inserting into the roller body hole, a longitudinal slot disposed at one end of the roller body and for inserting into the hollow roller unit, a threaded shaft disposed in the longitudinal slot, and a fixed shaft disposed at the other end of the roller body.

[0014] A further preferred technical solution is that the hollow roller unit includes a hollow roller that is set on the roller body hole during fabric cutting and is used to insert and install the dual-purpose threaded shaft unit when the fabric is unwound after cutting, and an internal threaded tube set at one end of the hollow roller and used to connect the threaded shaft.

[0015] A further preferred technical solution is that the hollow roller unit further includes a lengthwise fastening groove disposed at the end of the internal threaded tube and used to clamp the dual-purpose threaded shaft unit, and a power input groove disposed at the end of the hollow roller and used to engage the dual-purpose threaded shaft unit.

[0016] A further preferred technical solution is that the dual-purpose threaded shaft unit includes a threaded shaft that is inserted into the shaft hole of the frame or the hollow roller, and a nut disposed on the threaded shaft and used to clamp the circular perforated knife or connect the hollow roller unit.

[0017] A further preferred technical solution is that: the threaded shaft is a threaded groove shaft; the internally threaded tube is a threaded groove tube; and the threaded shaft is a raised threaded shaft.

[0018] A further preferred technical solution is that, when the fabric is unwound after cutting, the threaded shaft is inserted into the hollow roller and the internal threaded tube.

[0019] A further preferred technical solution is that the power input slot is in the shape of a regular hexagon.

[0020] A further preferred technical solution is that the nut includes a regular hexagonal nut.

[0021] A further preferred technical solution is that the end face of the nut is provided with a tightening slot. Attached Figure Description

[0022] Figure 1 This is a top-down view of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram showing the position of a circular perforated knife in this invention.

[0024] Figure 3 This is a schematic diagram showing the position of the cut fabric in this invention.

[0025] Figure 4 This is a schematic diagram of the installation method of the shafted roller unit and the hollow roller unit in this invention.

[0026] Figure 5 This is a schematic diagram of the structure of the roller unit with shaft in this invention.

[0027] Figure 6 This is a schematic diagram of the hollow roller unit in this invention.

[0028] Figure 7 This is a schematic diagram of the dual-purpose threaded shaft unit in this invention.

[0029] Figure 8 This is a schematic diagram of the installation method of the circular perforated knife in this invention.

[0030] Figure 9 This is a schematic diagram showing the position and shape of the roller body hole and the frame shaft hole in this invention.

[0031] Figure 10 This is a schematic diagram of the nut shape in the length-direction fastening groove of the present invention.

[0032] Figure 11 This is a schematic diagram of the second shape of the nut in the length-direction fastening groove of the present invention.

[0033] The meanings of the markings in the diagram are as follows:

[0034] a) Cut fabric, b) Fabric direction of movement, c) Fabric to be cut;

[0035] 11. U-shaped frame; 12. Circular knife with hole; 13. Frame shaft hole;

[0036] Roller body hole 1, shaft roller unit 2, hollow roller unit 3, dual-purpose threaded shaft unit 4;

[0037] Roller body 201, length-grooved 202, threaded shaft body 203, fixed shaft 204, hollow roller 301, internally threaded tube 302, length-fastening groove 303, power input groove 304, threaded shaft body 401, nut 402, tightening slot 403. Detailed Implementation

[0038] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0039] As attached Figure 1-11 As shown, a cutting device for sofa fabric processing includes a U-shaped frame 11, a circular perforated knife 12, and a frame shaft hole 13. It also includes roller holes 1 on the U-shaped frame 11, a shaft roller unit 2 and a hollow roller unit 3 respectively inserted into and screwed onto the two roller holes 1, and used to respectively wind up two bundles of cut fabric a, and a dual-purpose threaded shaft unit 4 used to fit the circular perforated knife 12 when cutting the fabric and to install the hollow roller unit 3 when unwinding the cut fabric a.

[0040] In this embodiment, the cutting device comprises: 2-3 pairs of frame shaft holes 13, 1 pair of roller body holes 1, a shaft roller unit 2 and a hollow roller unit 3 that are screwed together and whose screw gaps are always aligned with the circular perforated blade 12, and 2-4 dual-purpose threaded shaft units 4.

[0041] It should be noted that:

[0042] First, both the frame shaft hole 13 and the roller hole 1 are openings that can be opened from the top, ensuring that the shaft roller unit 2, the hollow roller unit 3 and the dual-purpose threaded shaft unit 4 can be easily disassembled and assembled.

[0043] Second, one pair of the frame shaft holes 13 is used to install the circular perforated knife 12, and all the remaining frame shaft holes 13 are used to install auxiliary structures such as depilatory and combing structures. The diameter of the roller hole 1 is larger than that of all the frame shaft holes 13, and its position is also the outermost, located at the downstream end of the fabric forward direction b.

[0044] Third, both the shaft ends of the roller unit 2 and the dual-purpose threaded shaft unit 4 have cutting surfaces to ensure that rotational power can be input and that the shaft will not slide left or right.

[0045] Then, the joint gap between the shaft roller unit 2 and the hollow roller unit 3, as well as the circular perforated knife 12, are always aligned, and the cutting ratio can be selected arbitrarily to ensure that, for example, two bundles of fabric a cut into three-seven or four-six proportions can be wound onto the shaft roller unit 2 and the hollow roller unit 3 respectively.

[0046] Finally, when unwinding the cut fabric a, the shaft roller unit 2 can be used directly for unwinding, and the dual-purpose threaded shaft unit 4 can also be inserted and fixed into the hollow roller unit 3 for normal unwinding. However, at this time, the cut fabric a is not centered on either roller, so care should be taken during unwinding to avoid damaging or contaminating the fabric.

[0047] The roller unit 2 includes a roller body 201 for inserting into the roller body hole 1, a length groove 202 disposed at one end of the roller body 201 and for inserting into the hollow roller unit 3, a threaded shaft 203 disposed in the length groove 202, and a fixed shaft 204 disposed at the other end of the roller body 201.

[0048] In this embodiment, when the cutting equipment is in normal use, the roller bodies of the shaft roller unit 2 and the hollow roller unit 3 are respectively inserted into the roller body hole 1, and the power input and left and right displacement are prevented by the end cutting plane on the fixed shaft 204.

[0049] The above-mentioned method of use is not common. By installing a roller shaft at the roller body hole 1, the roller body surfaces of the shafted roller unit 2 and the hollow roller unit 3 are prevented from being significantly worn.

[0050] In addition, the threaded shaft 203 and the fixed shaft 204 are aligned. When the fabric is cut, the threaded shaft 203 is screwed into the hollow roller unit 3 and the fixed shaft 204 are idle. However, when the fabric a is unwound after cutting, the threaded shaft 203 and the fixed shaft 204 are normally erected and used.

[0051] Therefore, the length of the threaded shaft 203 is greater than the depth of the length-oriented slot 202.

[0052] The hollow roller unit 3 includes a hollow roller 301 that is set on the roller body hole 1 when the fabric is cut and is used to insert and install the dual-purpose threaded shaft unit 4 when the fabric a is unwound after cutting, and an internal threaded tube 302 that is set at one end of the hollow roller 301 and is used to connect the threaded shaft 203.

[0053] In this embodiment, when the device is used for normal cutting, the internally threaded tube 302 and the threaded shaft 203 are fully screwed together until the end face of the hollow roller 301 and the end face of the roller body 201 fully abut against each other. After the end face gap is adjusted, the circular perforated knife 12 is aligned. The ratio of the position of the gap and the knife on the width of the fabric is the cutting ratio.

[0054] Finally, one bundle of cut fabric a, which is "edge-wound", can be obtained on the hollow roller 301 and the roller body 201 respectively. When unwinding the fabric, just pay attention.

[0055] The hollow roller unit 3 further includes a lengthwise fastening groove 303 disposed at the end of the internal threaded tube 302 and used to clamp the dual-purpose threaded shaft unit 4, and a power input groove 304 disposed at the end of the hollow roller 301 and used to engage the dual-purpose threaded shaft unit 4.

[0056] In this embodiment, when the cut fabric a is unwound, the dual-purpose threaded shaft unit 4 must be inserted into the hollow roller 301 and fixed circumferentially, so that both ends of the dual-purpose threaded shaft unit 4 are mounted on the fabric unwinding machine.

[0057] At this time, the power input groove 304 is circumferentially engaged with the dual-purpose threaded shaft unit 4 as a power input, while the length-direction fastening groove 303 is used to prevent the above-mentioned engagement structure from failing due to lateral relative displacement.

[0058] Therefore, when the dual-purpose threaded shaft unit 4 is installed on the hollow roller unit 3, it is first inserted, then engaged at the power input groove 304, and finally tightened at the length-direction fastening groove 303.

[0059] The dual-purpose threaded shaft unit 4 includes a threaded shaft 401 that is inserted into the frame shaft hole 13 or the hollow roller 301, and a nut 402 disposed on the threaded shaft 401 and used to clamp the circular perforated knife 12 or connect the hollow roller unit 3.

[0060] In this embodiment, there are at least two nuts 402 on a single threaded shaft 401. When the circular perforated cutter 12 is installed, the nuts 402 are located on both sides of the cutter body and clamp the cutter face, ensuring that the motor connected to the threaded shaft 401 can smoothly drive the circular perforated cutter 12.

[0061] In addition, when installing auxiliary structures such as hair removal devices, the dual-purpose threaded shaft unit 4 also clamps the auxiliary structures from the left and right.

[0062] When the threaded shaft 401 is inserted into the hollow roller 301, it is ensured that there is at least one nut on both the length-to-fastening groove 303 and the power input groove 304, and the nut at the power input groove 304 cannot be round, otherwise power cannot be transmitted.

[0063] The threaded shaft 401 is a threaded groove shaft; the internally threaded tube 302 is a threaded groove tube; and the threaded shaft 203 is a raised threaded shaft.

[0064] In the existing technology, screw-in structures can be divided into the following two types according to the different threading methods:

[0065] First, a protruding thread mates with a protruding thread;

[0066] Second, the protruding thread fits into the threaded groove.

[0067] In this embodiment, the threaded shaft 401 uses a threaded groove instead of a raised thread because it needs to fit the circular perforated cutter 12 and avoid thread stripping.

[0068] Secondly, in order to fit more tightly and stably into the hollow roller 301, the hollow diameter of the latter corresponds to the diameter of the former. Therefore, the internal threaded tube 302 cannot have protruding threads, but can only have threaded grooves.

[0069] Next, as the screwed object of the threaded shaft 401, the threaded shaft 203 can only be a raised thread shaft, and the nut 402 is also a raised thread. Therefore, all the above thread structure selections are a complete and mutually complementary set of solutions.

[0070] When the cut fabric a is unwound, the threaded shaft 401 is inserted into the hollow roller 301 and the internal threaded tube 302.

[0071] In this embodiment, the inner ring faces of the hollow roller 301 and the internally threaded tube 302 are aligned and have the same diameter. The channels of both are formed in one step during production, and there are no visible boundary lines.

[0072] The power input slot 304 is hexagonal in shape.

[0073] In this embodiment, the power input slot 304 cannot be circular; its shape can also be square or elliptical.

[0074] The nut 402 includes a regular hexagonal nut.

[0075] In this embodiment, at least one of the two or two groups of nuts 402 is not a round nut, and the most common non-round nut is a regular hexagonal nut.

[0076] The end face of the nut 402 is provided with a tightening slot 403.

[0077] In this embodiment, the aforementioned regular hexagonal nut is first screwed appropriately into the threaded shaft 401, then aligned and engaged with the power input groove 304, and then another / group of the nuts 402 clamps the inner end face of the length-oriented fastening groove 303.

[0078] Therefore, the nut in the fastening groove 303 needs to be fully tightened, and there are two main tightening methods:

[0079] First, the head size of the nut is smaller than the length of the fastening groove 303, and there is room for wrench operation between them, for example, attached. Figure 11 ;

[0080] Secondly, although the operating space is insufficient, the end face of the nut 402 is provided with a tightening slot 403. Inserting and rotating the tightening slot 403 will also tighten the nut. For example, see attached... Figure 10 .

[0081] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of the present invention. These are non-inventive modifications and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A cutting device for sofa fabric processing, comprising a U-shaped frame (11), a circular perforated blade (12), and a frame shaft hole (13), characterized in that: It also includes roller holes (1) provided on the U-shaped frame (11), roller units (2) and hollow roller units (3) respectively installed on the two roller holes (1) and screwed together for winding up two bundles of cut fabric (a), and a dual-purpose threaded shaft unit (4) used to fit the circular perforated knife (12) when cutting the fabric and to install the hollow roller unit (3) when unwinding the cut fabric (a). The roller unit (2) includes a roller body (201) for inserting into the roller body hole (1), a longitudinal slot (202) located at one end of the roller body (201) and for inserting into the hollow roller unit (3), a threaded shaft (203) located in the longitudinal slot (202), and a fixed shaft (204) located at the other end of the roller body (201). The hollow roller unit (3) includes a hollow roller (301) that is set on the roller hole (1) when the fabric is cut and is used to insert and install the dual-purpose threaded shaft unit (4) when the fabric (a) is unwound after cutting, and an internal threaded tube (302) that is set at one end of the hollow roller (301) and is used to connect the threaded shaft (203). The hollow roller unit (3) further includes a lengthwise fastening groove (303) disposed at the end of the internal threaded tube (302) and used to clamp the dual-purpose threaded shaft unit (4), and a power input groove (304) disposed at the end of the hollow roller (301) and used to engage the dual-purpose threaded shaft unit (4). The dual-purpose threaded shaft unit (4) includes a threaded shaft (401) that is inserted into the frame shaft hole (13) or the hollow roller (301), and a nut (402) disposed on the threaded shaft (401) and used to clamp the circular perforated knife (12) or connect the hollow roller unit (3). The power input slot (304) is hexagonal in shape. The nut (402) includes a regular hexagonal nut. When the dual-purpose threaded shaft unit (4) is installed with the hollow roller unit (3), the regular hexagonal nut is first screwed into the threaded shaft body (401), then aligned and engaged with the power input groove (304), and then another / group of the nuts (402) clamps the inner end face of the length-direction fastening groove (303).

2. The cutting equipment for sofa fabric processing according to claim 1, characterized in that: The threaded shaft (401) is a threaded groove shaft; the internally threaded tube (302) is a threaded groove tube; and the threaded shaft (203) is a raised threaded shaft.

3. The cutting equipment for sofa fabric processing according to claim 1, characterized in that: When the cut fabric (a) is unwound, the threaded shaft (401) is inserted into the hollow roller (301) and the internal threaded tube (302).

4. The cutting equipment for sofa fabric processing according to claim 1, characterized in that: The end face of the nut (402) is provided with a tightening slot (403).

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