Conveying guide for a knitted fabric

Abstract

A knitting machine fabric conveying guide device for guiding a fabric to be processed to move, comprising a machine table, which is sequentially provided with a knitting mechanism, a tension control mechanism and a guide mechanism from top to bottom. The guide mechanism is provided with at least one guide group. The fabric can be pulled through the knitting mechanism and passively guided out of the guide group. The tension control mechanism has a shaft and at least one tension control group. Both ends of the shaft are fixedly arranged on the machine table. The tension control group comprises two guide wheels and a damping control unit. The two guide wheels are pivotally arranged on the shaft. The damping control unit elastically provides resistance to the rotation of the two guide wheels. When the fabric is hung on the two guide wheels for conveying, the fabric can generate appropriate tension when being passively rolled by the knitting mechanism. The invention provides the required damping design of the fabric during conveying, increases the tension of the fabric, effectively positions the fabric, and facilitates subsequent hook knitting processing.

Description

Technical Field

[0001] This invention applies to the technical field of knitting machines, and more particularly to a conveying and guiding device for knitted fabrics. Background Technology

[0002] Generally, warp knitting machines lack tension guidance designs in their fabric conveying devices. Because the fabrics are typically soft, they cannot be effectively positioned after the first knitting pass. This results in warp knitting machines only being able to complete the knitting process in one pass, making it difficult to perform secondary processing on semi-finished fabrics. However, due to constantly evolving fabric requirements, secondary processing may be necessary to meet those needs. For example, to increase the safety of the pull cords on venetian blinds, some countries have amended their laws to require the pull cords to be concealed within the ladder strap to prevent them from being exposed and potentially causing injury to young children around their necks.

[0003] Because existing warp knitting machines cannot accommodate the new ladder belt design and provide secondary processing to allow for the concealed pull ropes on both sides of the existing ladder belt, the existing warp knitting machines are unusable and may need to be redesigned, resulting in the existing machines being idle and wasted.

[0004] This section is only an example of how the ladder design of crocheted blinds requires secondary processing. In other embodiments, secondary processing may also be required for other fabrics to increase the versatility of the woven fabric. Summary of the Invention

[0005] The inventors of this invention have made improvements to the conventional knitting machine fabric conveying device, which still has the disadvantage of being unable to effectively position semi-finished products for secondary processing in actual use.

[0006] The main objective of this invention is to provide a conveying and guiding device for knitted fabrics, which can increase the tension of the fabric by providing the damping design required during the conveying process, thereby achieving effective positioning and facilitating subsequent crocheting operations.

[0007] To achieve the aforementioned objective, the present invention provides a conveying and guiding device for knitted fabric, used to guide the movement of a fabric to be processed. The device includes a knitting machine body, a guiding mechanism, and a tension control mechanism. The knitting machine body has a machine base with a knitting mechanism. The guiding mechanism is located below the knitting mechanism and includes at least one guiding assembly. The fabric can be pulled by the knitting mechanism and passively guided out by the guiding assembly. The tension control mechanism is located between the guiding mechanism and the knitting mechanism, and includes a shaft and at least one tension control assembly. Both ends of the shaft are fixed to the machine base. The tension control assembly includes a bushing, two guide wheels, a damping control unit, a first limiting member, and a second limiting member. The components are respectively sleeved on the shaft, and the first limiting component and the second limiting component are respectively located at both ends of the bushing. The damping control unit is located between the second limiting component and the bushing. The guide wheels are respectively fixed at both ends of the bushing. The first limiting component is sleeved on the shaft and abuts against one end face of the bushing to unidirectionally limit the movement of the bushing towards the first limiting component. The damping control unit abuts against the other end of the bushing to elastically provide resistance to the rotation of the bushing. When the two sides of the fabric are respectively hung on the two guide wheels for conveying, the fabric is passively rolled by the knitting mechanism to generate appropriate tension.

[0008] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabrics includes a side frame formed on both sides of the machine base, each side frame having a side wing protruding from it, and each side wing being locked with a fixing rod in a vertical direction.

[0009] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabrics includes a first guiding group, which has a first guide rod and at least two first guiding members. The first guiding members are arranged in pairs. The two ends of the first guide rod are respectively fixed to two fixed rods. The two first guiding members are respectively locked to the first guide rod, and the distance between the two first guiding members can be adjusted. Each of the two first guiding members has a collar and an adjusting bolt. The two collars are sleeved on the first guide rod, and the two adjusting bolts are respectively locked on the two collars and abutted and fixed to the first guide rod. At least one elastic member is sleeved between the two adjusting bolts so that the fabric portion is located between the two first guiding members and sequentially abuts against the first guide rod and the elastic member for guidance.

[0010] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabrics, wherein the elastic element of the first guiding group is a rubber ring.

[0011] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabric includes a second guiding group located between the first guiding group and the knitting mechanism. The second guiding group has a second guide rod and at least two second guiding members. The two ends of the second guide rod are respectively fixed to the two fixed rods. The plurality of second guiding members are arranged in pairs. The two second guiding members are respectively locked to the second guide rod, and the distance between the two second guiding members can be adjusted. The two second guiding members are located between the fabric, and each of the two second guiding members is a set of loops. After the fabric is guided out by the first guiding group, it is guided out of the second guiding group by abutting against the surface of the two loops.

[0012] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabric includes a third guiding group, which has a third guide rod, a fixing plate, and at least two springs. The springs are arranged in pairs. The two ends of the third guide rod are respectively fixed to the two fixing rods. The third guiding group is located between the second guiding group and the knitting mechanism. The fixing plate is fixed above the second guide rod. The springs are arranged along the moving direction of the fabric, and one end of the springs is fixed to the fixing plate. The springs elastically abut against the third guide rod. After the fabric is led out by the second guiding group, it is guided out by the two springs of the third guiding group elastically clamping between the third guide rod.

[0013] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabric includes a third guiding group, which includes a third guide rod, a fixing plate, and at least two springs. The springs are arranged in pairs. The two ends of the third guide rod and the fixing plate are respectively fixed to the two fixing rods. The springs are arranged along the moving direction of the fabric, and one end of the springs is fixed to the fixing plate. The springs elastically abut against the third guide rod, and the fabric is elastically clamped by the two springs of the third guiding group and guided out between the two springs and the third guide rod.

[0014] In one embodiment of the present invention, in the above-mentioned conveying and guiding device for knitted fabric, the surfaces of the two guide wheels of the tension control mechanism can be provided with a plurality of protrusions according to the shape of the fabric, and a recess is formed between adjacent plurality of protrusions.

[0015] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabrics, wherein the two guide wheels of the tension control mechanism have opposite surfaces each having a side circumferential surface, and the height of these side circumferential surfaces is the same as the height of the bottom surface of these recesses in opposite positions.

[0016] In one embodiment of the present invention, the above-mentioned conveying and guiding device for knitted fabrics includes a damping control unit having two abutting members and an elastic body. The two abutting members are respectively disposed close to the second limiting member and the bushing. An elastic body is provided between the two abutting members, and the elastic force of the elastic body between the two abutting members can be adjusted synchronously according to the position of the second limiting member being fixed to the shaft.

[0017] The advantages of this invention are:

[0018] The present invention provides a conveying and guiding device for knitted fabrics, which can increase the tension of the fabric by providing the damping design required during the conveying process, thereby achieving effective positioning and facilitating subsequent crocheting operations. Attached Figure Description

[0019] Figure 1 This is a three-dimensional appearance diagram of the present invention.

[0020] Figure 2 This is a partially enlarged three-dimensional schematic diagram of the guiding mechanism of the present invention.

[0021] Figure 3 This is a side view schematic diagram of the guiding mechanism of the present invention.

[0022] Figure 4 This is a partially enlarged three-dimensional schematic diagram of the tension control mechanism of the present invention.

[0023] Figure 5 This is a partial three-dimensional exploded view of the tension control mechanism of the present invention.

[0024] Figure 6 This is a partial cross-sectional schematic diagram of the tension control mechanism of the present invention. Detailed Implementation

[0025] like Figures 1 to 3 As shown, the fabric conveying and guiding device of the present invention is used to guide the movement of a fabric 10 to be processed. It includes a knitting machine body 20, a guiding mechanism 30 and a tension control mechanism 40.

[0026] The knitting machine body 20 has a machine base 21, with a side frame 210 formed on both sides of the machine base 21, and a knitting mechanism 22 provided on the machine base 21. Each of the two side frames 210 has a side wing 211 protruding from it, and each of the two side wing 211 is locked with a fixing rod 212 in a vertical direction.

[0027] The guide mechanism 30 is located below the knitting mechanism 22 of the machine base 21, and at least one guide group is fixedly provided between the two side frames 210. The fabric 10 can be pulled by the knitting mechanism 22 and passively pulled out by the guide group. As shown in the figure, three guide groups are fixed between the two fixed rods 212, which are a first guide group 31, a second guide group 32 and a third guide group 33 from bottom to top.

[0028] The first guide assembly 31 includes a first guide rod 310, at least two first guide members 311, and at least one elastic member 312. The multiple first guide members are arranged in pairs. The two ends of the first guide rod 310 are respectively fixed to two fixed rods 212. The two first guide members 311 are respectively locked to the first guide rod 310, and the distance between the two first guide members 311 can be adjusted. Each of the two first guide members 311 has a collar 3110 and an adjusting bolt 3111. The two collars 3110 are sleeved on the first guide rod 310. A guide rod 310 is provided, and two adjusting bolts 3111 are respectively locked to the two collars 3110 and abutted against the first guide rod 310. An elastic member 312 is sleeved between the two adjusting bolts 3111. The elastic member 312 is, for example, a rubber ring, so that the fabric 10 is partially located between the two first guide members 311 and is guided out by abutting against the first guide rod 310 and the elastic member 312 in sequence. The elastic member 312 can provide appropriate elasticity and friction, thereby increasing the tension effect of the fabric 10 during conveying.

[0029] The second guide group 32 is located between the first guide group 31 and the knitting mechanism 22. The second guide group 32 has a second guide rod 320 and at least two second guide members 321. The two ends of the second guide rod 320 are respectively fixed to the two fixed rods 212. The first guide members 311 are in pairs. The two second guide members 321 are respectively locked to the second guide rod 320. The distance between the two second guide members 321 can be adjusted. The two second guide members 321 are located between the fabric 10. The two second guide members 321 are each a set of rings. After the fabric 10 is guided out by the first guide group 31, it abuts against the surface of the two sets of rings 3110 and is guided out of the second guide group 32.

[0030] The third guide group 33 has a third guide rod 330, a fixing piece 331, and at least two spring pieces 332. The multiple spring pieces 332 are arranged in pairs. The two ends of the third guide rod 330 are respectively fixed to the two fixing rods 212. The third guide group 33 is located between the second guide group 32 and the knitting mechanism 22. The fixing piece 331 is fixed above the second guide rod 320. The multiple spring pieces 332 are arranged along the moving direction of the fabric 10, and one end of each spring piece 332 is fixed to the fixing piece 331. The multiple spring pieces 332 elastically abut against the third guide rod 330. After the fabric 10 is led out by the second guide group 32, it is guided out by the two spring pieces 332 of the third guide group 33 elastically clamping between the third guide rod 330.

[0031] Please see Figures 4 to 6The tension control mechanism 40 is located between the guide mechanism 30 and the knitting mechanism 22. The tension control mechanism 40 has a shaft 41 and at least one tension control assembly 42. Both ends of the shaft 41 are fixed to the machine base 21, as shown in the figure. The two ends of the shaft 41 are fixed to two side flaps 211. The tension control assembly 42 is fixed to the shaft 41 and includes a bushing 420, two guide wheels 421, a damping control unit 422, a first limiting member 423, and a second limiting member 424. The bushing 420, the first limiting member 423, and the second limiting member 424 are respectively sleeved on the shaft 41. The first limiting member 423 and the second limiting member 424 are respectively located at both ends of the bushing 420, and the damping control unit 422 is located between the second limiting member 424 and the bushing 420. At least one bearing 425 is provided between the shaft 41 and the bushing 420, as shown in the figure. The bearing 425 is provided at both ends of the bushing 420, and the guide wheel 421 is fixed at both ends of the bushing 420. The bushing 420 and the two guide wheels 421 are respectively engaged and fixed with a key 426. The surfaces of the two guide wheels 421 can be provided with a plurality of protrusions 4210 according to the shape of the fabric 10, and the protrusions 4210 are separated from each other. A recess 4211 is formed in each of the two guide wheels 421. A side circumferential surface 4212 is formed on the opposite surfaces of the two guide wheels 421. The height of these side circumferential surfaces 4212 is the same as the height of the bottom surface of the recesses 4211 in the opposite positions. The first limiting member 423 is sleeved on the shaft 41 and abuts against one end face of the bushing 420 to unidirectionally limit the movement of the bushing 420 towards the first limiting member 423. The damping control unit 422 has two abutting members 4220, respectively disposed close to the second limiting member 424 and the bushing 420. An elastic body 4221, as shown in the figure, is provided between the two abutting members 4220. The second limiting member 4221 is a spring. The positioning member 424 is fixed to the shaft 41, and can synchronously adjust the elastic force of the elastic body 4221 between the two abutment members 4220 according to the position of the second limiting member 424 fixed to the shaft 41, thereby generating a damping effect to press against one end of the bushing 420 adjacent to the damping control unit 422, so that when the bushing 420 drives the two guide wheels 421 to rotate, a damping effect is generated, so that when the fabric 10 is pulled and moved by the knitting mechanism 22, it is damped by the tension control mechanism 40, providing the fabric 10 with a moderate tension effect, which is convenient for positioning, so that the knitting mechanism 22 can smoothly perform secondary processing on the fabric 10.

[0032] For ease of explanation, the following description uses a single piece of the fabric to be processed as an example. Figures 1 to 3When the fabric 10 is pulled by the knitting mechanism 22 during the take-up and crochet operation, it is guided by the first guide group 31 of the guide mechanism 30, so that part of the fabric 10 is located between the two first guide members 311, and is sequentially abutted against the first guide rod 310 and the elastic member 312 and guided out. Friction is generated between the fabric 10 and the elastic body 4221 to increase the tension of the fabric 10 when it moves. Then, it is guided by the second guide group 32 of the guide mechanism 30, and guided by the two second guide members 321 of the second guide group 32 to the third guide group 33. The fabric 10 is guided out by the elastic clamping of the two springs 332 of the third guide group 33 against the third guide rod 330. The elastic pressing of the two springs 332 can also generate appropriate pressure to increase the tension of the fabric 10.

[0033] like Figure 1 , Figure 4 and Figure 6 As shown, when the fabric 10 is guided by the guide mechanism 30 to the tension control mechanism 40, both sides of the fabric 10 are respectively hung on the two guide wheels 421, and the fabric 10 is as follows. Figure 4 Taking the ladder strap of a venetian blind as an example, the fabric 10 has a main rope 11 on each side, and a plurality of secondary ropes 12 and a plurality of ears 13 are equally spaced between the two main ropes 11. The two main ropes 11 are respectively abutted against the side circumferential surfaces 4212 of the two guide wheels 421, and the plurality of secondary ropes 12 are respectively engaged in the plurality of recesses 4211 of the two guide wheels 421. When the fabric 10 is pulled by the knitting mechanism 22 during the winding and knitting operation, the two guide wheels 421 will be passively rotated, and the shaft will be activated. The sleeve 420 rotates synchronously, but because one end of the sleeve 420 is elastically abutted by the tension control group 42, a damping effect is generated, thereby providing tension effect for the fabric 10 during the conveying process. In conjunction with the guide mechanism 30 and tension control mechanism 40 of this embodiment, the fabric 10, being a soft material, can maintain tension during the conveying process, achieving a positioning effect. This facilitates the smoothness and accuracy of the subsequent crocheting of the fabric 10 in the knitting mechanism 22, and increases the yield of the fabric during secondary processing.

[0034] The present invention has been described through the above embodiments and variations. All embodiments and variations of the present invention are merely illustrative. Based on the essential spirit and scope of the present invention, various variations of the conveying and guiding device for knitted fabrics including the above features are covered by the present invention.

Claims

1. A conveying and guiding device for knitted fabrics, characterized in that, Used to guide the movement of a fabric to be processed, including: A knitting machine body, the knitting machine body having a machine base, the machine base being equipped with a knitting mechanism; A guiding mechanism is provided below the knitting mechanism of the machine, and the guiding mechanism has at least one guiding group. The fabric can be pulled by the knitting mechanism and passively guided out by the guiding group; and A tension control mechanism is provided, located between the guiding mechanism and the knitting mechanism. The tension control mechanism has a shaft and at least one tension control assembly. Both ends of the shaft are fixed to the machine base. The tension control assembly includes a bushing, two guide wheels, a damping control unit, a first limiting member, and a second limiting member. The bushing, the first limiting member, and the second limiting member are respectively sleeved on the shaft, with the first and second limiting members located at opposite ends of the bushing. The damping control unit is located between the second limiting member and the bushing. The two ends of the bushing... The guide wheels are fixedly mounted, and the first limiting member is fixed to the shaft and abuts against one end face of the shaft sleeve. The surfaces of the two guide wheels of the tension control mechanism can be provided with a plurality of protrusions according to the shape of the fabric, and a recess is formed between adjacent plurality of protrusions to unidirectionally limit the movement of the shaft sleeve toward the first limiting member. The damping control unit abuts against the other end of the shaft sleeve to elastically provide resistance to the rotation of the shaft sleeve. When the two sides of the fabric are respectively hung on the protrusions of the two guide wheels for conveying, the fabric is passively rolled by the knitting mechanism to generate appropriate tension.

2. The conveying and guiding device for knitted fabrics as described in claim 1, characterized in that, The machine has a frame on each side, and each frame has a wing protruding from it. Each wing is secured with a fixing rod in a vertical direction.

3. The conveying and guiding device for knitted fabrics as described in claim 2, characterized in that, The guiding mechanism has a first guiding group, which has a first guide rod, at least two first guiding members, and at least one elastic member. The first guiding members are arranged in pairs. The two ends of the first guide rod are respectively fixed to two fixed rods. The two first guiding members are respectively locked to the first guide rod, and the distance between the two first guiding members can be adjusted. Each of the two first guiding members has a sleeve and an adjusting bolt. The two sleeves are sleeved on the first guide rod, and the two adjusting bolts are respectively locked on the two sleeves and abutted and fixed to the first guide rod. The elastic member is sleeved between the two adjusting bolts so that the fabric part is located between the two first guiding members and is sequentially abutted against the first guide rod and the elastic member and guided out.

4. The conveying and guiding device for knitted fabrics as described in claim 3, characterized in that, The elastic element of the first guide group is a rubber ring.

5. The conveying and guiding device for knitted fabrics as described in claim 3, characterized in that, The guiding mechanism has a second guiding group located between the first guiding group and the knitting mechanism. The second guiding group has a second guide rod and at least two second guiding members. The two ends of the second guide rod are respectively fixed to the two fixed rods. The second guiding members are in pairs, and the two second guiding members are respectively locked to the second guide rod. The distance between the two second guiding members can be adjusted. The two second guiding members are located between the fabric. Each of the two second guiding members is a loop. After the fabric is guided out by the first guiding group, it is guided out of the second guiding group by abutting against the surface of the two loops.

6. The conveying and guiding device for knitted fabrics as described in claim 5, characterized in that, The guiding mechanism has a third guiding group, which includes a third guide rod, a fixing plate, and at least two springs. The springs are arranged in pairs. The two ends of the third guide rod are respectively fixed to the two fixing rods. The third guiding group is located between the second guiding group and the knitting mechanism. The fixing plate is fixed above the second guide rod. The springs are arranged along the movement direction of the fabric, and one end of each spring is fixed to the fixing plate. The springs elastically abut against the third guide rod. After the fabric is led out by the second guiding group, it is guided out by the elastic clamping of the two springs of the third guiding group between the third guide rods.

7. The conveying and guiding device for knitted fabrics as described in claim 2, characterized in that, The guiding mechanism has a third guiding group, which has a third guide rod, a fixing plate and at least two springs. The springs are arranged in pairs. The two ends of the third guide rod and the fixing plate are respectively fixed to the two fixing rods. The springs are arranged along the moving direction of the fabric, and one end of the springs is fixed to the fixing plate. The springs elastically abut against the third guide rod, and the fabric is elastically clamped by the two springs of the third guiding group and guided out between the two springs and the third guide rod.

8. The conveying and guiding device for knitted fabrics as described in claim 1, characterized in that, The tension control mechanism has two guide wheels with opposite surfaces each having a side circumferential surface. The height of these side circumferential surfaces is the same as the height of the bottom surface of these recesses in opposite positions.

9. The conveying and guiding device for knitted fabrics as described in claim 1, characterized in that, The damping control unit has two abutting members and an elastic body. The two abutting members are respectively disposed close to the second limiting member and the bushing. The elastic body is disposed between the two abutting members. The elastic force of the elastic body between the two abutting members can be adjusted synchronously according to the position of the second limiting member fixed to the shaft.

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