TWM601251U - Bottom thread swing rod linkage mechanism of loom - Google Patents

Abstract

This creation is the bottom thread swing lever linkage mechanism of the loom, which includes a pivot shaft and a pivot assembly. The pivot shaft is rotatably arranged on the supporting structure and used for fixing the bottom line swing rod. The pivoting assembly includes a rocker arm, an abutting wheel, and a cam. The rocker arm is pivoted on the supporting structure and connected to the pivot shaft and can pull the pivot shaft. The abutting wheel is rotatably arranged on the rocker arm. The cam is fixed with the drive shaft and rotates with the drive shaft; the outer ring surface of the cam abuts against the outer ring surface of the abutting wheel, and the two outer ring surfaces are parallel at the abutting positions. As the cam rotates with the drive shaft, the rotating pivot shaft is pulled by the abutment wheel and the rocker arm in time. Since the abutment wheel and the cam are in rolling contact, and the outer ring surface of the cam and the outer ring surface of the abutment wheel are kept parallel to each other at the abutting position during operation, friction loss can be greatly reduced.

Description

Bottom thread swing rod linkage mechanism of loom

This creative department relates to a bottom thread swing rod linkage mechanism of a loom.

In the prior art looms, in order to allow the weft hooks, knitting needles, and bobbin thread swing rods to have enough working space to cooperate with each other, the swing direction of the bobbin thread swing rods is designed to be inclined to the weft hook (approximately horizontally) And the direction of movement of the knitting needles (approximately longitudinal), thereby avoiding mutual collision and interference.

6 and 7, in order to achieve the above purpose, the prior art loom includes a first shaft 91, a weft hook 92, a second shaft 93, a pusher 94, a fixing seat 95, and a pivot shaft 96. An abutment component, and a bottom line swing bar 98. The first shaft 91 is connected to a driving device (not shown in the figure), and the weft hook 92 is fixed on the first shaft 91, whereby the driving device can drive the weft hook 92 to move back and forth through the first shaft 91. The second shaft 93 is connected to the first shaft 91 by a belt, and thereby is driven to rotate by the first shaft 91. The pushing member 94 is fixed on the outer ring surface of the second shaft 93 and moves as the second shaft 93 rotates; and the pushing member 94 has a pushing curved surface 941. The fixing seat 95 is fixedly arranged on the supporting structure of the loom. The pivot shaft 96 is rotatably provided on the fixed seat 95. The abutment component includes a abutment seat 971, a abutment block 972, and a spring 973. The abutting seat 971 is fixed on the outer ring surface of the pivot shaft 96 and can move relative to the fixed seat 95. The abutting block 972 is disposed on the abutting seat 971 and abuts the pushing curved surface 941 of the pushing member 94. The spring 973 is disposed between the fixing seat 95 and the abutting seat 971, so that the abutting block 972 can be kept abutting against the pushing curved surface 941 during operation by pushing the abutting seat 971. The bottom line swing lever 98 is fixed to an end of the pivot shaft 96 protruding from the fixed seat 95 and can move as the pivot shaft 96 rotates.

With the above structure, when the second shaft 93 rotates with the first shaft 91, the pushing member 94 will move accordingly, and the pushing curved surface 941 will gradually push the abutting block 972. Since the abutting block 972 is arranged on the abutting seat 971, and the abutting seat 971 is fixed on the outer ring surface of the pivot shaft 96, when the pushing curved surface 94 pushes the abutting block 972, it is equivalent to the pivoting The rotating shaft 96 generates a moment; at that time, the spring 973 is pushed and compressed, and finally the moment causes the pivot shaft 96 to rotate relative to the fixed seat 95; on the contrary, when the pushing member 94 moves in the opposite direction with the second shaft 93, the abutting block The 972 is pushed by the spring 973 and gradually resets with the pushing curved surface 941, so that the bottom line swing lever 98 swings back and forth along a required path. Moreover, since the first shaft 91 and the second shaft 93 are both engaged with the belt, they will rotate back and forth synchronously, so that the bobbin thread swing lever 98 can swing back and forth in accordance with the operation of the weft hook 92 to perform weaving.

However, the above structure has the following disadvantages:

First, since the second shaft 93 rotates back and forth synchronously with the first shaft 91, the pushing member 94 fixed on the second shaft 93 will also move back and forth synchronously with the first shaft 91; plus the abutment block 972 Being pushed by the spring 973, it continuously abuts against the pushing surface 941. Therefore, during the back and forth movement of the pushing member 94, the pushing surface 941 and the abutting block 972 will continue to rub back and forth, causing serious wear. .

Secondly, since the pushing block 972 actually moves in an arc with the pivot axis 96 as the axis, the pushing block 972 and the pushing curved surface 941 cannot maintain complete positive abutment during operation, but are pushing During the pushing process of the abutting curved surface 941, the pushing block 972 will gradually incline to the pushing curved surface 941, which will cause more serious friction loss.

Third, because the bobbin thread swing bar 98 must cooperate with the movement of the weft hook 92 to swing the webbing, and the swing timing and distance of the bobbin thread swing bar 98 completely depend on the timing and degree of the push member 94 pushing against the abutting block 972, so the push member The pushing surface 941 of 94 must be designed to match the movement of the weft hook 92, so the pushing surface 941 must be an irregular curved surface shape. In addition, the push-off surface 941 must have sufficient accuracy, so the calculation and simulation during design and the tolerance control during manufacturing must be quite strict. As a result, higher design and manufacturing costs must be consumed.

Fourth, in order to reduce the aforementioned frictional noise, some manufacturers use plastic to make the abutment block 972. However, in this way, the friction loss of the abutting block 972 itself will be more severe, which will cause the swing timing and amplitude of the bottom line swing bar 98 to be more quickly misaligned.

Fifth, the prior art mechanism is bulky and has many parts, so the mechanism is complicated and not easy to disassemble and maintain.

In view of the aforementioned shortcomings and deficiencies of the prior art, the present invention provides a bottom thread swing lever linkage mechanism of a loom, which can greatly reduce friction loss, so it is more durable and cost-saving. Moreover, its simple design, small size, easy disassembly, assembly and maintenance can further reduce the cost of design, manufacture, and maintenance.

In order to achieve the above-mentioned creative purpose, the technical means used in this creation is to design a bottom thread swing rod linkage mechanism of a loom, which is used to install on a support structure of a loom and is used to fix a bottom thread swing rod; The ribbon loom includes a drive shaft. The bottom line swing rod linkage mechanism of the loom includes: A base for installing on the supporting structure; A pivot shaft, which rotatably penetrates the seat body and includes a first end and a second end opposite to each other; the first end is used for fixing the bottom line swing rod; A pivot assembly, which includes A pulling member fixed on the second end of the pivot shaft; A connecting rod connected to the pulling element, and the connection point between the connecting rod and the pulling element is not located on the axial extension line of the pivot shaft; A rocker arm, one end of which is used for pivoting on the support structure, and the other end is connected to the connecting rod; An abutment wheel, which is rotatably arranged on the rocker arm; A cam for fixedly sleeved on the drive shaft and rotates with the drive shaft; the outer ring surface of the cam abuts against the outer ring surface of the abutment wheel, and the outer ring surface of the cam is The outer ring surfaces of the abutment wheel are parallel to each other at the abutment; An elastic element connected to the pivot assembly and tends to make the abutting wheel abut the cam.

The advantage of this creation lies in that the connecting rod is fixed to the second end of the pivot shaft by the pulling element, and the connection between the connecting rod and the pulling element is not located on the axial extension line of the pivot shaft, so when the connecting rod pulls the pulling element, it can drive Pivot axis. In addition, through the cooperation of the rocker arm, the abutment wheel, and the cam, the cam can pull the connecting rod through the abutment wheel and the rocker arm in time as the drive shaft rotates, thereby driving the rotation pivot shaft. Among them, due to the rolling contact between the abutting wheel and the cam, the friction loss between the two is extremely small; and, in operation, the outer ring surface of the cam and the outer ring surface of the abutting wheel maintain parallel to each other at the abutting position Therefore, compared with the gradual inclined sliding contact in the prior art, the friction loss can be further greatly reduced, so it is more durable and saves costs. In addition, the creative design is simple, small in size, easy to disassemble and repair, which can further reduce the cost of design, manufacture and maintenance.

Furthermore, in the bottom thread swing lever linkage mechanism of the loom, the elastic element is a torsion spring; the elastic element is connected to the pivot shaft and provides a torque to the pivot shaft, thereby the elastic element The pivoting assembly is connected with the pivoting shaft so that the abutting wheel abuts against the cam.

Furthermore, the bottom thread swinging rod linkage mechanism of the loom, wherein the bottom thread swinging rod linkage mechanism of the ribbon loom further includes A first direction of rotation; A second rotation direction, which is opposite to the first rotation direction; An adjusting piece is sleeved on the pivot shaft and can rotate relative to the pivot shaft; one end of the elastic element is fixed to the adjusting piece, and the other end is fixed to the pivot shaft; when the adjusting piece follows the first When a rotation direction rotates relative to the pivot axis, the torque increases; when the adjustment member rotates relative to the pivot axis along the second rotation direction, the torque decreases; the adjustment member includes A plurality of clamping parts, which are arranged in a ring shape and are located in the radial direction of the pivot shaft; A fixing component, which is fixed on the base; the fixing component abuts against one of the fixing parts of the adjustment piece, and stops the adjustment piece in the second rotation direction.

Furthermore, in the bottom thread swing lever linkage mechanism of the loom, each of the fixing portions of the adjusting member is formed on the outer ring surface of the adjusting member.

Further, in the bottom thread swinging rod linkage mechanism of the loom, wherein, the fixing component includes A clamping seat, which is fixed on the seat body and includes an abutting wall; A fastener, which is pivoted on the fastener seat; when the adjustment component rotates relative to the pivot axis along the first rotation direction, the fasteners of the adjustment component sequentially make the fastener relative to the The clamping seat pivots; when the adjustment member rotates relative to the pivot axis along the second rotation direction, one of the fixing portions of the adjustment member abuts against the fastener and the fastener abuts against the card The abutting wall of the fixing seat thereby stops the adjusting member in the second rotation direction.

Furthermore, the bottom thread swing lever linkage mechanism of the loom, wherein: The clamping seat of the clamping assembly further includes A first side, which faces the adjustment piece; A second side, which faces away from the adjustment piece; A through hole, which penetrates the first surface and the second surface; the abutting wall of the fixing seat is formed on the inner wall surface of the through hole; Two pivotal grooves connected to the perforation and located on opposite sides of the perforation; each of the pivotal grooves forms an opening on the second surface; The card firmware of the card fixing component further includes An abutting portion capable of abutting against the abutting wall of the clamping seat and capable of abutting against one of the clamping portions of the adjusting member; Two pivoting parts, which are formed at both ends of the abutting part, and are respectively rotatably arranged in the two pivoting grooves of the fixing seat; each pivoting part can be formed in the corresponding pivoting groove The opening formed on the second surface enters or leaves the corresponding pivot groove; The card assembly further includes A locking cover can be detachably arranged on the second surface of the locking seat and closes the opening formed by each pivoting groove on the second surface.

Furthermore, the bottom thread swing lever linkage mechanism of the loom, wherein the adjusting member further includes A plurality of slots are arranged in a ring shape and located in the radial direction of the pivot shaft; each slot is formed with an opening on the outer ring surface of the adjusting member.

Furthermore, in the bottom thread swing link linkage mechanism of the loom, each slot extends along the radial direction of the pivot shaft.

In the following, in conjunction with the drawings and preferred embodiments of this creation, the technical means adopted by this creation to achieve the predetermined creation purpose are further explained.

Please refer to Figure 1 and Figure 3, the bottom thread swing rod linkage mechanism of the loom of the present creation is used to set up a bottom thread swing rod A on a support structure (not shown in the figure) of a loom. The loom includes a drive shaft B. Wherein, the supporting structure may be a machine table or a skeleton of the belt loom. The bottom thread swing lever linkage mechanism of the loom includes a base 10, a pivot shaft 20, a pivot assembly 30, and an elastic element 40.

Please further refer to FIG. 3 and FIG. 4, the base body 10 is used to be installed on the supporting structure, and in this embodiment, the base body 10 includes a base portion 11 and two supporting portions 12. The two supporting portions 12 are formed on opposite sides of the base portion 11 and extend toward the same extension of the base portion 11; in other words, the base body 10 has a concave-shaped structure in this embodiment.

The pivot shaft 20 rotatably penetrates the base 10, specifically, rotatably penetrates the two supporting parts 12, and the pivot shaft 20 includes a first end 21 and a second end 22 opposite to each other. The first end 21 is used to fix the bottom line swing rod A.

Please further refer to Figure 2, Figure 3, and Figure 4. The pivot assembly 30 includes a pulling member 31, a connecting rod 32, a rocker arm 33, an abutting wheel 34, and a cam 35. The pulling member 31 is fixed to the second end 22 of the pivot shaft 20. The connecting rod 32 is connected to the pulling element 31, and the connection point between the connecting rod 32 and the pulling element 31 is not located on the axial extension line of the pivot shaft 20, so that when the pulling element 31 is pulled by the connecting feeling, the pivot shaft 20 can be driven to rotate. One end of the rocker arm 33 is used to pivot on the supporting structure, and the other end is connected to the connecting rod 32. The abutment wheel 34 is rotatably provided on the rocker arm 33. The cam 35 is used to be fixedly sleeved on the drive shaft B and rotate with the drive shaft B; and the outer ring surface of the cam 35 abuts against the outer ring surface of the abutment wheel 34, and the outer ring surface of the cam 35 and the abutment The outer ring surfaces of the supporting wheels 34 are parallel to each other at the abutting position. In other words, the cam 35 and the abutment wheel 34 are in contact and rolling connection with their respective outer ring surfaces, and during the relative rolling of the two, the outer ring surface of the cam 35 and the outer ring surface of the abutment wheel 34 are maintained at the abutting position Parallel to each other.

The elastic element 40 is connected to the pivot assembly 30 and tends to make the abutment wheel 34 abut the cam 35. Specifically, in the present embodiment, the elastic element 40 is a torsion spring. The elastic element 40 is connected to the pivot shaft 20 and provides a torque to the pivot shaft 20. The torque is provided by the pivot shaft 20, the pulling member 31, and the connecting rod 32. , And the rocker arm 33 to maintain the abutment wheel 34 against the cam 35. However, in other embodiments, the elastic element 40 is not limited to a torsion spring and connected to the pivot shaft 20. For example, it may also be a compression spring with one end abutting against the supporting structure and the other end against the rocker arm 33, thereby The abutment wheel 34 can also maintain abutment against the cam 35.

In addition, please further refer to FIG. 3, FIG. 4, and FIG. 5. In this embodiment, the bottom thread swing lever linkage mechanism of the loom further includes a first rotation direction D1, a second rotation direction D2, an adjustment member 50, and One card assembly 60.

The first rotation direction D1 is opposite to the second rotation direction D2.

The adjusting member 50 is sleeved on the pivot shaft 20 and can rotate relative to the pivot shaft 20. One end of the elastic element 40 is fixed to the adjusting member 50 and the other end is fixed to the pivot shaft 20. When the adjustment member 50 rotates relative to the pivot shaft 20 along the first rotation direction D1, the torque of the elastic element 40 increases; when the adjustment member 50 rotates relative to the pivot shaft 20 along the second rotation direction D2, the torque of the elastic element 40 cut back. The adjusting member 50 includes a plurality of clamping parts 51 and a plurality of slots 52. The securing portions 51 are arranged in a ring shape and are located in the radial direction of the pivot shaft 20, and specifically, each securing portion 51 is formed on the outer ring surface of the adjusting member 50 in this embodiment, but in other embodiments The middle may also be formed on one side surface of the adjustment member 50. The slots 52 are arranged in a ring shape and are located in the radial direction of the pivot shaft 20, and each slot 52 has an opening formed on the outer ring surface of the adjusting member 50. In this embodiment, the slot 52 penetrates the fixing portion 51 and forms an opening on the fixing portion 51. In this embodiment, the slots 52 extend along the radial direction of the pivot shaft 20.

The fixing assembly 60 is fixed on the base 10 and abuts against one of the fixing portions 51 of the adjusting member 50 and stops the adjusting member 50 in the second rotation direction D2. The fixing component 60 includes a fixing seat 61, a fixing member 62, and a fixing cover 63.

The fixing seat 61 is fixed to the seat body 10 and includes an abutting wall 611, a first surface 612, a second surface 613, a through hole 614, and two pivotal grooves 615. The abutting wall 611 is formed on the inner wall surface of the through hole 614. The first surface 612 faces the adjustment member 50. The second surface 613 faces away from the adjusting member 50. The through hole 614 penetrates the first surface 612 and the second surface 613. The two pivotal grooves 615 are connected to the through hole 614 and are located on opposite sides of the through hole 614, and each pivotal groove 615 forms an opening on the second surface 613.

The clamping member 62 is pivoted on the clamping base 61. When the adjusting member 50 rotates relative to the pivot shaft 20 along the first rotation direction D1, the clamping parts 51 of the adjusting member 50 sequentially dial the clamping member 62 to pivot the clamping member 62 relative to the clamping seat 61; When the adjusting member 50 rotates relative to the pivot shaft 20 along the second rotation direction D2, the clamping member 62 abuts against one of the fixing portions 51 of the adjusting member 50 and the abutting wall 611 of the fixing seat 61, and rotates in the second The upper stop adjustment member 50 in the direction D2. The clamping member 62 includes an abutting portion 621 and two pivoting portions 622. The abutting portion 621 can abut against the abutting wall 611 of the clamping seat 61 and can abut one of the clamping portions 51 of the adjusting member 50. The two pivoting portions 622 are formed at two ends of the abutting portion 621 and are respectively rotatably provided in the two pivoting grooves 615 of the fixing seat 61. Each pivotal portion 622 can enter or escape from the corresponding pivotal groove 615 through the opening formed on the second surface 613 by the corresponding pivotal groove 615.

The locking cover 63 is detachably provided on the second surface 613 of the locking seat 61 and closes the openings formed on the second surface 613 of the pivot grooves 615.

When in use, the operator can insert any rod into one of the slots 52, and rotate the adjustment member 50 toward the first rotation direction D1, thereby increasing the torque provided by the elastic element 40, so that the abutting wheel 34 can be It abuts against the cam 35 more tightly, so that the bottom line swing lever A can swing more accurately.

In addition, during the adjustment process, when the operator rotates the adjustment member 50 toward the first rotation direction D1, since the fastener 62 is not restricted, the fastener portions 51 of the adjustment member 50 can sequentially dial the fastener 62 makes the clamping member 62 pivot relative to the clamping base 61; in other words, since the clamping member 62 is not restricted in the direction along the first rotation direction D1 and can rotate relative to the clamping base 61, the clamping member 62 will It is toggled without stopping the adjustment member 50 from rotating toward the first rotation direction D1.

Conversely, after the torque provided by the elastic element 40 is sufficient, the operator will stop applying force in the first rotation direction D1. At this time, the torque of the elastic element 40 will tend to rotate the adjusting member 50 in the second rotation direction D2; however, When the adjusting member 50 rotates along the second rotation direction D2, the clamping member 62 abuts against one of the fixing portions 51 of the adjusting member 50 and the abutting wall 611 of the fixing seat 61, and moves in the second rotation direction D2 Stop adjustment piece 50. In other words, in the direction following the second rotation direction D2, the fastener 62 is restricted by the abutting wall 611 and cannot rotate relative to the securing seat 61, so the abutting portion 621 of the adjusting member 50 cannot move the fastener 62 , And relatively will be fixed by the fastener 62 abutting against it, so that the adjusting member 50 cannot continue to rotate along the second rotation direction D2. In this way, the adjusted torque can be maintained.

The pull member 31 is fixed to the second end 22 of the pivot shaft 20, and the connection between the connecting rod 32 and the pull member 31 is not located on the axial extension line of the pivot shaft 20, so when the connecting rod 32 pulls the pull member 31 Can drive the pivot shaft 20 to rotate. In addition, by the cooperation of the rocker arm 33, the abutment wheel 34, and the cam 35, the cam 35 can pull the connecting rod 32 through the abutment wheel 34 and the rocker arm 33 in a timely manner as the drive shaft B rotates, thereby driving the rotation pivot Revolving shaft 20. Among them, due to the rolling contact between the abutment wheel 34 and the cam 35, the friction loss between the two is extremely small; and, in operation, the outer ring surface of the cam 35 and the outer ring surface of the abutment wheel 34 are in abutment The positions are kept parallel to each other, so compared to the gradual inclined sliding contact in the prior art, the friction loss can be further greatly reduced, so it is more durable and saves costs. In addition, the creative design is simple, small in size, easy to disassemble and repair, which can further reduce the cost of design, manufacture and maintenance.

The above is only the preferred embodiment of this creation, and does not impose any formal restriction on this creation. Although this creation has been disclosed as above in preferred embodiments, it is not intended to limit this creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not deviate from this creative technical solution is based on this Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of the technical solution for creation.

A: bottom line swing bar B: Drive shaft D1: The first direction of rotation D2: Second rotation direction 10: Seat 11: Base 12: Bearing Department 20: pivot axis 21: first end 22: second end 30: pivot assembly 31: Influence 32: connecting rod 33: Rocker 34: Leaning Wheel 35: cam 40: elastic element 50: adjustment piece 51: Cage part 52: Slot 60: Snap component 61: Clip seat 611: Against the Wall 612: The first side 613: second side 614: piercing 615: Pivot Slot 62: card firmware 621: abutment 622: Pivot 63: Snap cover 91: first axis 92: Weft hook 93: second axis 94: Push the piece 941: Push to Surface 95: fixed seat 96: pivot axis 971: leaning seat 972: block 973: Spring 98: bottom line swing bar

Figure 1 is the three-dimensional appearance of this creation. Figure 2 is a side view of the rocker arm, abutment wheel, and cam of this creation. Figure 3 is an exploded view of the components of this creation. Figure 4 is an exploded view of another component of this creation. Figure 5 is a cross-sectional view of the adjustment piece and the clamping component of this creation. Fig. 6 is a three-dimensional appearance view of a bottom thread swing link linkage mechanism in the prior art. Figure 7 is an enlarged view of the prior art.

A: bottom line swing bar

B: Drive shaft

10: Seat

20: pivot axis

30: pivot assembly

31: Influence

32: connecting rod

33: Rocker

34: Leaning Wheel

35: cam

60: Snap component

Claims (8)

A bottom thread swing rod linkage mechanism of a ribbon loom, which is used to install a bottom thread swing rod on a support structure of a loom, and is used to fix a bottom thread swing rod; the loom includes a drive shaft; the bottom thread swing rod of the loom is linked Institution contains A base for installing on the supporting structure; A pivot shaft, which rotatably penetrates the seat body and includes a first end and a second end opposite to each other; the first end is used for fixing the bottom line swing rod; A pivot assembly, which includes A pulling member fixed on the second end of the pivot shaft; A connecting rod connected to the pulling element, and the connection point between the connecting rod and the pulling element is not located on the axial extension line of the pivot shaft; A rocker arm, one end of which is used for pivoting on the support structure, and the other end is connected to the connecting rod; An abutment wheel, which is rotatably arranged on the rocker arm; A cam for fixedly sleeved on the drive shaft and rotates with the drive shaft; the outer ring surface of the cam abuts against the outer ring surface of the abutment wheel, and the outer ring surface of the cam is The outer ring surfaces of the abutment wheel are parallel to each other at the abutment; An elastic element connected to the pivot assembly and tends to make the abutting wheel abut the cam. The bottom thread swing lever linkage mechanism of a loom according to claim 1, wherein the elastic element is a torsion spring; the elastic element is connected to the pivot shaft and provides a torque to the pivot shaft, thereby the elastic element The pivoting assembly is connected with the pivoting shaft so that the abutting wheel abuts against the cam. The bobbin thread swing lever linkage mechanism of the loom according to claim 2, wherein the bobbin thread swing lever linkage mechanism of the loom further comprises A first direction of rotation; A second rotation direction, which is opposite to the first rotation direction; An adjusting piece is sleeved on the pivot shaft and can rotate relative to the pivot shaft; one end of the elastic element is fixed to the adjusting piece, and the other end is fixed to the pivot shaft; when the adjusting piece follows the first When a rotation direction rotates relative to the pivot axis, the torque increases; when the adjustment member rotates relative to the pivot axis along the second rotation direction, the torque decreases; the adjustment member includes A plurality of clamping parts, which are arranged in a ring shape and are located in the radial direction of the pivot shaft; A fixing component, which is fixed on the base; the fixing component abuts against one of the fixing parts of the adjustment piece, and stops the adjustment piece in the second rotation direction. The bobbin thread swing lever linkage mechanism of the loom according to claim 3, wherein each of the fixing portions of the adjusting member is formed on the outer ring surface of the adjusting member. The bottom thread swinging rod linkage mechanism of a loom according to claim 3, wherein the fixing component includes A clamping seat, which is fixed on the seat body and includes an abutting wall; A fastener, which is pivoted on the fastener seat; when the adjustment component rotates relative to the pivot axis along the first rotation direction, the fasteners of the adjustment component sequentially make the fastener relative to the The clamping seat pivots; when the adjustment member rotates relative to the pivot axis along the second rotation direction, one of the fixing portions of the adjustment member abuts against the fastener and the fastener abuts against the card The abutting wall of the fixing seat thereby stops the adjusting member in the second rotation direction. The bottom thread swing lever linkage mechanism of a loom as described in claim 5, wherein: The clamping seat of the clamping assembly further includes A first side, which faces the adjustment piece; A second side, which faces away from the adjustment piece; A through hole, which penetrates the first surface and the second surface; the abutting wall of the fixing seat is formed on the inner wall surface of the through hole; Two pivotal grooves connected to the perforation and located on opposite sides of the perforation; each of the pivotal grooves forms an opening on the second surface; The card firmware of the card fixing component further includes An abutting portion capable of abutting against the abutting wall of the clamping seat and capable of abutting against one of the clamping portions of the adjusting member; Two pivoting parts, which are formed at both ends of the abutting part, and are respectively rotatably arranged in the two pivoting grooves of the fixing seat; each pivoting part can be formed in the corresponding pivoting groove The opening formed on the second surface enters or leaves the corresponding pivot groove; The card assembly further includes A locking cover can be detachably arranged on the second surface of the locking seat and closes the opening formed by each pivoting groove on the second surface. The bottom thread swing lever linkage mechanism of the loom according to claim 3, wherein the adjustment member further includes A plurality of slots are arranged in a ring shape and located in the radial direction of the pivot shaft; each slot is formed with an opening on the outer ring surface of the adjusting member. The bobbin thread swing lever linkage mechanism of the loom according to claim 7, wherein each of the slots extends along the radial direction of the pivot shaft.

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