A claw component

Abstract

The present invention relates to the technical field of textiles, and provides a gripper assembly, comprising: a gripper (101) for gripping a fabric; a rigid shaft (106), the first end of the rigid shaft (106) being inserted into the gripper (101) and fixed; and an actuating assembly, the actuating assembly driving the rigid shaft (106) to move outwards or inwards or rotate, so that the gripper (101) opens or closes. The gripper assembly of the present invention has a simple structure and delicate functions, and can move stockings to a proper position without damage.

Description

Technical Field

[0001] The present invention relates to the technical field of textiles, and particularly to a claw assembly. Background Art

[0002] In the textile industry, especially in the hosiery industry, when knitting stockings in a knitting machine, since the machine parts are not suitable to be made very long, when transferring the stockings in the knitting machine, the stockings are likely to get stuck, and it is necessary to push the stockings to a proper position. There is no device in the prior art that is simple in structure, does not damage the stockings, and is convenient and fast. Summary of the Invention

[0003] In view of the problems in the background art, the present invention provides a claw assembly, including: a claw for gripping a fabric; a hard shaft, the first end of which is inserted into the claw and fixed; an actuating assembly, which drives the hard shaft to move outward or inward or rotate, so as to open or close the claw.

[0004] The actuating assembly is two rotatable fork-shaped members, which are provided with jacks. The second end of each hard shaft is inserted into the jack of the corresponding fork-shaped member and fixed, and by rotating the fork-shaped members, the claw is opened or closed.

[0005] Optionally, the claw assembly further includes: a tension spring, which is fixed on the fork-shaped member.

[0006] Optionally, the fork-shaped member includes: a middle main body portion, a first extension portion and a second extension portion. The first extension portion and the second extension portion are located at both ends of the middle main body portion, and the jack is located on the middle main body portion.

[0007] Optionally, the tension spring is fixed on the second extension portion.

[0008] Optionally, a bent foot is installed on the claw. A through hole is provided on the bent foot for accommodating the first end of the hard shaft. The bent foot is fixed on the side, upper side or lower side of the claw, and a protrusion is provided on the inner side of the claw.

[0009] Optionally, the middle main body portion is cylindrical, the first extension portion is cylindrical, and the second extension portion is conical.

[0010] Optionally, the first end of the hard shaft has a flattened surface, and the hard shaft and the claw are fixed by the acting force of a fixing screw on the flattened surface.

[0011] Optionally, the claw assembly further includes: a connecting block, which has a groove for accommodating the first extension portion of the fork-shaped member and restricting the rotation range of the first extension portion.

[0012] Optionally, an adjusting device for adjusting the rotation range of the first extension portion is provided on the groove.

[0013] The beneficial effects of the present invention are as follows: The gripper assembly of the present invention has a simple structure and delicate functions, and can move the stockings to the appropriate position without damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To better understand the present invention, the present invention will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. These drawings only depict typical embodiments of the present invention and should not be considered as limiting the scope of protection of the present invention.

[0015] Figure 1 An exploded view of the gripper assembly according to an embodiment of the present invention.

[0016] Figure 2 An exploded view of the gripper assembly according to another embodiment of the present invention.

[0017] Figure 3 A perspective view of the assembled gripper assembly according to an embodiment of the present invention.

[0018] Figure 4 An exploded view of the gripper assembly according to yet another embodiment of the present invention.

[0019] Figure 5 An exploded view of the gripper assembly according to another embodiment of the present invention.

[0020] REFERENCE NUMERALS

[0021] Gripper 101, Bent foot 102, Bent foot fixing screw 103, Hard shaft fixing screw 104, Hard shaft 106, Fork 107, Third fixing screw 108, Short spring pin 109, Tension spring 110, Intermediate main body 111, First extension 112, Second extension 113, Long spring pin 114; Connecting block 202, Fork adjusting screw 208, Fork adjusting screw fixing nut 209. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The embodiments of the present invention will be described below with reference to the accompanying drawings, where the same components are denoted by the same reference numerals. Without conflict, the following embodiments and the technical features in the embodiments can be combined with each other.

[0023] First Embodiment

[0024] Figure 1 An exploded view of the gripper assembly of the present invention is shown. The gripper assembly includes a gripper 101, a bent foot 102, a hard shaft 106, a fork 107, and a tension spring 110.

[0025] Through the cooperation of the bent-foot fixing screw 103, the bent foot 102 is connected to the clamping claw 101. The bent foot 102 can be connected to the side, upper side, lower side, etc. of the clamping claw 101, and the two can also be manufactured as an integral structure. The bent foot 102 is shown in the figure as a whistle shape or an L-like shape, and can also be made into other shapes according to needs, which also conforms to the design concept of the present invention.

[0026] A through hole is provided on the bent foot 102 for inserting the hard shaft 106. The hard shaft 106 can also be integrally made with the bent foot 102. In Figure 1 the illustrated embodiment, the first end of the hard shaft 106, that is, the end connected to the bent foot 102, is manufactured to have two planes, that is, this end is not cylindrical. The bent foot 102 and the hard shaft 106 are connected together by the hard shaft fixing screw 104 (4 fixing screws 104 are shown in the figure, and different numbers of fixing screws can also be used according to needs). Specifically, the hard shaft fixing screw 104 is tightened on the plane, and the hard shaft 106 is clamped with the bent foot 102 through friction, so that the hard shaft 106 is non-rotatable relative to the bent foot 102.

[0027] The hard shaft 106 is non-rotatable within the through hole of the bent foot 102. When the hard shaft 106 moves outward in parallel, it can pull the bent foot 102 to move outward, so that the clamping claw 101 opens. When the hard shaft 106 moves inward in parallel, it drives the bent foot 102 to move inward, so that the clamping claw 101 closes.

[0028] One end of the hard shaft 106 is connected to the bent foot 102, and the other end is connected to the fork 107. The fork 107 has a middle body portion 111, a first extension portion 112, and a second extension portion 113. The middle body portion 111 is manufactured as a cylinder, and can also be other shapes. The middle body portion 111 has a through hole for inserting the second end (the end opposite to the first end) of the hard shaft 106, and the spring pin fixing screw 108 is used to screw into the hole on the middle body portion 111 to abut against the second end of the hard shaft 106. The fork 107 is non-rotatable relative to the hard shaft 106. Optionally, the second end of the hard shaft 106 can be flattened like the first end to increase the friction with the spring pin fixing screw 108.

[0029] The first extension portion 112 and the second extension portion 113 of the fork 107 are respectively located on both sides of the middle body portion 111, where the second extension portion 113 is located on the inner side and the first extension portion 112 is located on the outer side. The second extension portion 113 is in a sharp cone shape and can also be made into other shapes according to needs.

[0030] The working mode of this clamping claw assembly is as follows.

[0031] When the fork 107 rotates outward (such as Figure 1In the direction of arrow A in [Figure], the first extension 112 descends, the second extension 113 ascends, driving the hard shaft 106 to rotate outward. The hard shaft 106 drives the bent foot 102 to rotate outward, and the bent foot 102 drives the gripper to ascend, that is, to move inward, so that the gripper 101 closes. The degree of rotation of the fork 107 determines the closing force of the gripper 101.

[0032] When the fork 107 rotates inward (such as Figure 1 in the direction of arrow B in [Figure]), the first extension 112 ascends, the second extension 113 descends, driving the hard shaft 106 to rotate inward. The hard shaft 106 drives the bent foot 102 to rotate inward, and the bent foot 102 drives the gripper downward, so that the gripper 101 opens. The degree of rotation of the fork 107 determines the opening degree of the gripper 101.

[0033] In one embodiment, the fork 107 can be rotated in the following manner: striking the first extension 112 of the fork 107. When striking the first extension 112 from top to bottom, the fork 107 rotates outward and the gripper 101 closes. When striking the first extension 112 from bottom to top, the fork 107 rotates inward and the gripper 101 opens.

[0034] In a preferred embodiment, the gripper assembly of the present invention further includes a tension spring 110. A through hole is provided on the first extension 112. The tension spring 110 is sleeved on the short spring pin 109, and the short spring pin 109 is inserted into the hole on the first extension 112, so that the end of the tension spring 110 is fixed on the first extension 112. The function of the tension spring 110 is to control the closing and opening forces of the gripper 101. If the tensile strength of the tension spring 110 is large, the closing and opening forces of the gripper 101 are large; if the tensile strength of the tension spring 110 is small, the closing and opening forces of the gripper 101 are small. The tension spring 110 is beneficial to maintaining the state of the gripper 101.

[0035] Second Embodiment

[0036] In the embodiment as shown in Figure 2 , the gripper assembly of the present invention further includes a connecting block 202. The hard shaft 106 can pass through the connecting block 202. The hard shaft 106 can also not pass through the connecting block 202, and in this case, the connecting block 202 can be fixed on an external device.

[0037] In one embodiment, the connection modes of the connecting block 202, the gripper 101, and the fork 107 are as shown in Figure 3As shown, the stocking 401 is sleeved on the stocking turning tube 402, and the holding claws 101 need to continuously move the stocking 401 downward. The holding claws 101 are located on both sides of the stocking turning tube 402. The rigid shaft passes through the stroke slider 201 and is connected to the fork 107. A tension spring 110 is connected between the two forks 107. The stroke slider 201 can move up and down along the stroke track 203, thereby driving the holding claws 101 and the connecting block 202 to move up and down. Four impact adjustment screws 216 are provided at the upper and lower ends of the stroke track for impacting the first extension 112 of the fork 107 to achieve the closing and opening of the holding claws. When the upper impact adjustment screw is impacted, the holding claws 101 close, the stroke slider 201 moves downward, driving the holding claws 101 to move downward, thereby moving the stocking 401 downward. When the lower impact adjustment screw is impacted, the holding claws 101 open.

[0038] Referring again to Figure 2 , the back surface of the connecting block 202 ( Figure 2 in the direction facing the fork 107 in

[0039] ) has a groove, and the second extension 113 of the fork 107 moves within the groove, and the movement range is blocked by the upper and lower edges of the groove. The first extension 112 and the intermediate main body 111 of the fork 107 are located outside the groove, facilitating the connection of the rigid shaft 106 to the intermediate main body 111.

[0039] More preferably, two fork adjustment screws 208 (or other devices) are provided on the upper and lower edges of the groove of the connecting block 202, and are respectively fixed on the upper and lower edges of the groove of the connecting block 202 with fixing nuts 209. By rotating the four fork adjustment screws 208, the rotation range of the second extension 113 of the fork 107 can be adjusted, thereby adjusting the closing and opening force of the holding claws 101.

[0040] If the dimension of the fork adjustment screw 208 rotated in is relatively large, the rotation range of the fork 107 is relatively small, and the closing and opening force of the holding claws 101 is small. If the dimension of the fork adjustment screw 208 rotated in is relatively small, the rotation range of the fork 107 is relatively large, and the closing and opening force of the holding claws 101 is large.

[0041] Third Embodiment

[0042] As Figure 4 shown, in another preferred embodiment of the present invention, two tension springs 110 can be provided. One ends of the two tension springs on the middle side are fixed together by a long spring pin 114, and the long spring pin 114 can be fixed on an external device (used in cooperation with the fork assembly).

[0043] In addition to the tension spring 110, other elastic devices are also included within the protection scope of the present invention.

[0044] Preferably, the gripper 101 is arc-shaped, and the inner surface of the gripper has granular protrusions to increase the friction of the gripper 101 for gripping the sock, but it will not damage the sock thread when pulling downward.

[0045] Preferably, the gripper 101 is made of plastic, which is light and low-cost.

[0046] Figure 5 Another embodiment is shown, which is different from the third embodiment in that a connecting block 202 is added. The function and structure of the connecting block 202 are the same as those of the second embodiment, and will not be described in detail here.

[0047] In another embodiment, the fork 107 can be replaced by a wrench. The two wrenches respectively grip the second end of the rigid shaft 106, and by turning the wrench, the wrench rotates the second end of the rigid shaft 106. When the wrench rotates the rigid shaft 106 outward, the gripper 101 opens. When the wrench rotates the rigid shaft 106 inward, the gripper 101 closes. The wrench can be controlled by a cylinder.

[0048] In another embodiment, the fork 107 can be replaced by a push-pull device. The push-pull device pushes the rigid shaft 106 outward (for example, translation), and the gripper 101 opens. The push-pull device pushes the rigid shaft 106 inward (for example, translation), and the gripper 101 closes. The push-pull device can be pushed by a cylinder.

[0049] The above-described embodiments are only relatively preferred specific embodiments of the present invention. Ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A gripper assembly, characterized in that, include: Two semi-circular gripping claws (101) for gripping fabric; Two hard shafts (106), a first end of each hard shaft (106) is inserted into a claw (101) and fixed; Two shift forks (107), each shift fork (107) comprising: a middle main body (111), a first extension part (112) and a second extension part (113), wherein the first extension part (112) and the second extension part (113) are located at two ends of the middle main body (111), and the middle main body (111) has a plug hole; the second end of each hard shaft (106) is inserted into the plug hole of the corresponding shift fork (107) and fixed, and the shift fork (107) is rotated to open or close the claw (101); A connecting block (202), the connecting block (202) having a groove, used to accommodate the first extension portion (112) of the shift fork (107) and limit the rotation range of the first extension portion (112); A bent foot (102) is mounted on the claw (101), and a through hole is provided on the bent foot (102) for accommodating the first end of the hard shaft (106), and the bent foot (102) is fixed to the side, upper side or lower side of the claw (101); When the shift fork (107) rotates outward, the first extension portion (112) descends and the second extension portion (113) rises, driving the hard shaft (106) to rotate outward, the hard shaft (106) drives the bent leg (102) to rotate outward, and the bent leg (102) drives the claw to rise, i.e., move inward, so that the claw (101) is closed, or, When the first extension portion (112) of the impact fork (107) impacts the first extension portion (112) from top to bottom, the fork (107) rotates outwards and the claws (101) close; when the first extension portion (112) is impacted from bottom to top, the fork (107) rotates inwards and the claws (101) open.

2. The gripper assembly according to claim 1, characterized in that, Also includes: A tension spring (110) is fixed on the two shift forks (107).

3. The gripper assembly according to claim 2, characterized in that, The tension spring (110) is fixed on the second extension portion (113).

4. The gripper assembly according to claim 1, characterized in that, The inner side of the claw (101) is provided with a protrusion.

5. The gripper assembly according to claim 1, characterized in that, The middle main body portion (111) is cylindrical, the first extension portion (112) is cylindrical, and the second extension portion (113) is conical.

6. The gripper assembly according to claim 1, characterized in that, The first end of the hard shaft (106) has a flattened surface, and the hard shaft (106) and the claw (101) are fixed by the action of a fixing screw and the flattened surface.

7. The gripper assembly according to claim 6, characterized in that, The groove is provided with an adjusting device for adjusting the rotation range of the first extension portion (112).

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