CN2848898Y - Cloth pulling device of industrial sewing machine - Google Patents

Abstract

The utility model relates to a cloth pulling device for an industrial sewing machine, particularly a cloth pulling device for a sewing machine for sewing shirts, work clothes, sports wear and jeans. The utility model is composed of an upper cloth pulling component and a lower cloth pulling component positioned on the lower part, wherein the upper cloth pulling component comprises an eccentric wheel arranged on a power shaft of a sewing machine, a connecting rod device linked with the eccentric wheel, a rocking rod driven by the connecting rod device, and an upper cloth pulling wheel; a closed bearing is arranged in the eccentric wheel and is connected with the power shaft; a closed unidirectional bearing which drives the upper cloth pulling wheel to rotate in the unidirectional direction because of the rocking of the rocking rod is arranged in the upper cloth pulling wheel; a closed unidirectional bearing which can control a lower cloth pulling wheel to only rotate in the unidirectional direction is also arranged in the lower cloth pulling wheel. The utility model has the advantage that ball bearings and outer column type unidirectional gears can be simply changed into components without needing oil lubrication, closed bearings which can not slide and closed unidirectional bearings; accordingly, the part assembly quantity can be decreased and the cost can be reduced.

Description

The cloth puller of industrial sewing machines

Technical field

The cloth puller of the utility model industrial sewing machines relates to cloth puller on a kind of Sewing machines, and finger is used for the cloth puller of the Sewing machines of sewing shirt, Work Clothes, sportswear, jeans especially.

Background technology

The cloth puller of known industrial sewing machines is shown in the cloth puller exploded view that Fig. 1 is known a kind of industrial sewing machines, mainly be installed in the rear of Sewing machines a, by a unidirectional power device 10 stoppers one rotating shaft 101 one-directional rotation, and drive belt pulleys 103 and make granny rag wheel 104 rotate synchronously to compress pin a1 direction through connecting a universal joint 102, so, behind sewing, promptly be subjected to the pressing of granny rag wheel 104, push away and draw and can steadily send when cloth to the rear of Sewing machines a.Though this known cloth puller has had the function of drawing cloth, but still must utilize the power resources of this unidirectional power device 10 as granny rag, and because of the cost of this unidirectional power device 10 higher, need import, so cause whole machine on the high side, and increased the weight and the accommodation space of machine, it only depends on the push-and-pull guiding of granny rag wheel 104 again, still dislikes not enough on effect slightly.

Secondly, as Fig. 2 is that the cloth puller exploded view of known another kind of industrial sewing machines and Fig. 3 are for shown in the combination side-looking structure chart of Fig. 2, this cloth puller is installed in the rear of the compress pin a1 of Sewing machines a, be positioned at the below by granny rag assembly 20 and on and must descend granny rag assembly 30 to be constituted, last granny rag assembly 20 comprises an eccentric wheel 201, a linkage 202, granny rag takes turns 205 on connecting rod 203, a rocking bar 204 and always; Wherein, eccentric wheel 201 is interior in conjunction with a ball bearing 206, and borrows the ball bearing 206 and the line shaft a2 of Sewing machines a inside to articulate, and rotates and synchronization action with line shaft a; During enforcement, borrow line shaft a2 to rotate to drive simultaneously eccentric wheel 201 upwards transmission make connected linkage 202 actions, then drive directly swinging of articulating with it to extension bar 203, the rocking bar 204 of interlock and its pivot joint simultaneously, this rocking bar 204 again on the stopper granny rag take turns 205 and rotate to compress pin a1 direction; Wherein, last granny rag assembly 30 has a following granny rag wheel 301 that pressed by granny rag wheel 205, also is equiped with the ratchet 302 of outer pillar in this time granny rag wheel 301.

The cloth puller that Fig. 2 implemented is synchronous start when borrowing the Sewing machines running, do not borrow the high power set of a cost in addition though there is palpus shown in Figure 1, but because of its assembly a lot of, so can't reduce more on the cost, assemble also very numerous and diverse, be to utilize ball bearing 206 to pivot in addition between the eccentric wheel 201 of this embodiment and the line shaft a2, but when this ball bearing 202 is implemented again, must carry out oil lubrication often just can use smoothly, so trouble in operation, again because, this on granny rag wheel 205 and down granny rag wheel 301 are ratchets 207 of the outer pillar of utilization, 302, and each screw, the installing of parts such as ball wherein, assembly is a lot of, again the ratchet 207 of the outer pillar of this kind, 302 have sliding phenomenon in the use, therefore, the structure disappearance of this cloth puller is a lot, haves much room for improvement.

Summary of the invention

The purpose of this utility model is to provide a kind of cloth puller of industrial sewing machines, with the ratchet of ball bearing and outer pillar be replaced as assembly simply, need not oil lubrication and the enclosed type bearing that can not slide, enclosed type unilateral bearing, thereby can reduce part assembling number, reduce cost, and cloth puller is more oversimplified and high-qualityization.

The utility model is implemented by following technical scheme: a kind of cloth puller of industrial sewing machines, be located at the compress pin of Sewing machines after, this cloth puller is made of the following granny rag assembly that granny rag assembly and on is positioned at the below, wherein:

Last granny rag assembly comprise one be installed in eccentric wheel on the Sewing machines line shaft, one and the linkage, of eccentric wheel interlock taken turns by granny rag, has an enclosed type bearing in this eccentric wheel to be connected with line shaft, can shake the enclosed type unilateral bearing of granny rag wheel one-directional rotation on the stopper because of rocking bar and be equiped with one in upward granny rag is taken turns, and this time granny rag assembly tool one must be subjected to the top to go up the following granny rag that the granny rag wheel presses to take turns, can control the only enclosed type unilateral bearing of one-directional rotation of drop-down cloth wheel but also have in the following granny rag wheel.

Advantage of the present utility model is: because ball bearing and outer pillar ratchet are replaced into enclosed type bearing, enclosed type unilateral bearing, like this, just need not lubricate, needn't assemble voluntarily, can not slide simultaneously; In addition, change the upwards kind of drive of last granny rag assembly into horizontal transmission, not only reduce directly member, and transmission is more certain and quick to extension bar.

Description of drawings

Fig. 1 is the cloth puller exploded view of known a kind of industrial sewing machines.

Fig. 2 is the cloth puller exploded view of known another kind of industrial sewing machines.

Fig. 3 is the combination side-looking structure chart of Fig. 2.

Fig. 4 is STRUCTURE DECOMPOSITION figure of the present utility model.

Fig. 5 is a combination side-looking structure chart of the present utility model.

Fig. 6 is the stereogram of enclosed type unilateral bearing of the present utility model.

Fig. 7 is the structure cutaway view of enclosed type unilateral bearing of the present utility model.

Fig. 8 is side-looking motion reference figure of the present utility model.

The drawing reference numeral explanation:

The cloth puller of known industrial sewing machines:

A-Sewing machines a1-compress pin

A2-line shaft 10-unidirectional power device

101-rotating shaft 102-universal joint

103-belt pulley 104-granny rag wheel

The last granny rag assembly of 20-201-eccentric wheel

202-linkage 203-is directly to extension bar

204-rocking bar 205-goes up the granny rag wheel

206-ball bearing 207-ratchet

Granny rag wheel under the granny rag assembly 301-under the 30-

The 302-ratchet

The utility model:

A-Sewing machines a1-compress pin

A2-line shaft b-cloth puller

The last granny rag assembly of 1-11-eccentric wheel

12-linkage 13-rocking bar

The last granny rag wheel of 14-15-enclosed type bearing

Granny rag assembly under the 16-enclosed type unilateral bearing 2-

Granny rag wheel 22-enclosed type unilateral bearing under the 21-

The specific embodiment

Now in conjunction with the specific embodiment and description of drawings the utility model is further described: as Fig. 4 is that STRUCTURE DECOMPOSITION figure of the present utility model and Fig. 5 are shown in the combination side-looking structure chart of the present utility model, a kind of cloth puller of industrial sewing machines, mainly be that the compress pin a1 rear that is installed in Sewing machines a is equipped with cloth puller b, this cloth puller b is made of the following granny rag assembly 2 that granny rag assembly 1 and on is positioned at the below, wherein, last granny rag assembly 1 comprises that one is installed in the eccentric wheel 11 on the Sewing machines a line shaft a2, one with the linkage 12 of eccentric wheel 11 interlocks, one is subjected to granny rag wheel 14 on the rocking bar 13 and that linkage 12 drives, wherein, has an enclosed type bearing 15 in the eccentric wheel 11 to be connected with line shaft a2, be equiped with enclosed type unilateral bearing 16 and go up in the granny rag wheel 14, it can take turns 14 one-directional rotation because of rocking bar 13 shakes on the stopper granny rag; Following granny rag assembly 2 tools one must be subjected to the top to go up the following granny rag wheel 21 that granny rag wheel 14 presses, and also have enclosed type unilateral bearing 22 in the following granny rag wheel 21, but it can control only one-directional rotation of drop-down cloth wheel 21.As Fig. 6 be the stereogram of enclosed type unilateral bearing of the present utility model and Fig. 7 for shown in the structure cutaway view of enclosed type unilateral bearing of the present utility model, the enclosed type unilateral bearing that uses in the utility model is interior pillar unilateral bearing.

Fig. 8 is side-looking motion reference figure of the present utility model.As shown in Figure 8, the line shaft a2 running of Sewing machines a is rotated, thereby drive eccentric wheel 11 reciprocally swingings, horizontal in regular turn kinematic link device 12 of while, drawing rocking bar 13 swings simultaneously impel goes up the stopper that granny rag wheel 14 is subjected to enclosed type unilateral bearing 16, last granny rag is taken turns 14 one-directional rotation, and rotate to compress pin a1 direction, drive it and oppositely rotate and be subjected to pressing when down the following granny rag wheel 21 of granny rag assembly 2 is also sent because of cloth to compress pin a1 direction, but and guarantee down only one-directional rotation of granny rag wheel 21 by the stopper of its enclosed type unilateral bearing 22; Cloth puller b also can cooperate intermittently constantly the drawing cloth to send synchronously when so, cloth was constantly sent.

The utility model with ball bearing and outer pillar ratchet be replaced into enclosed type bearing 15, enclosed type unilateral bearing 16,22 is implemented, and like this, just need not lubricate, and needn't assemble voluntarily, the while can not slide, that can guarantee to move stablizes.

Claims (1)

1, a kind of cloth puller of industrial sewing machines, be located at the compress pin of Sewing machines after, this cloth puller is made of the following granny rag assembly that granny rag assembly and on is positioned at the below, it is characterized in that:

Last granny rag assembly comprise one be installed in eccentric wheel on the Sewing machines line shaft, one and the linkage, of eccentric wheel interlock taken turns by granny rag, has an enclosed type bearing in this eccentric wheel to be connected with line shaft, can shake the enclosed type unilateral bearing of granny rag wheel one-directional rotation on the stopper because of rocking bar and be equiped with one in upward granny rag is taken turns, and this time granny rag assembly tool one must be subjected to the top to go up the following granny rag that the granny rag wheel presses to take turns, can control the only enclosed type unilateral bearing of one-directional rotation of drop-down cloth wheel but also have in the following granny rag wheel.

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