CN108396471B

CN108396471B - Thread hooking device

Info

Publication number: CN108396471B
Application number: CN201810140589.3A
Authority: CN
Inventors: 王海江; 田桂郁
Original assignee: Zhejiang Xinsheng Technology Co Ltd
Current assignee: Zhejiang Xinsheng Technology Co Ltd
Priority date: 2018-02-11
Filing date: 2018-02-11
Publication date: 2020-09-01
Anticipated expiration: 2038-02-11
Also published as: CN108396471A

Abstract

The invention discloses a thread hooking device, belongs to the field of embroidery machine accessories, and solves the problem of reduction of the connection transmission reliability of a thread hooking pull rod and a thread hooking shifting fork due to accumulation of dust in the prior art. The invention is mainly used for improving the stability and reliability of the thread hooking device and prolonging the service life of the thread hooking device.

Description

Thread hooking device

Technical Field

The invention relates to an embroidery machine accessory, in particular to a thread hooking device.

Background

The embroidery machine uses various silk threads to carry out embroidery, and as the silk threads are in contact abrasion with the embroidery machine in the conveying process, more dust can be naturally generated. In the existing thread hooking device, a thread hooking pull rod drives a thread hooking shifting fork to rotate through a universal bearing, the two pushing and blocking sliding blocks are matched with springs to drive the thread hooking shifting fork to rotate, and a swinging connecting rod drives the thread hooking shifting fork to rotate. The problem of dust accumulation is not considered in the connection mode of the thread hooking pull rod and the thread hooking shifting fork, and after the embroidery machine is used for a long time, dust can be easily accumulated at the joint of the thread hooking pull rod and the thread hooking shifting fork, so that the linkage resistance of the thread hooking pull rod and the thread hooking shifting fork can be increased, the normal work of the thread hooking pull rod and the thread hooking shifting fork is influenced, thread hooking can not be achieved, the embroidery quality is influenced, the clamping condition can possibly occur in serious cases, and the machine is damaged.

Disclosure of Invention

The invention aims to provide a thread hooking device, which improves the stability and reliability of thread hooking of the thread hooking device and prolongs the service life of the thread hooking device.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a collude line ware, including colluding the line driver, collude the line pull rod, collude line shift fork and collude the sword, collude the line driver and drive and collude line pull rod linear reciprocating motion, be equipped with the slider on colluding the line pull rod, the slider is equipped with the axial spout of perpendicular to colluding the line pull rod, slider is along with colluding line pull rod linear reciprocating motion, be equipped with the ball on colluding the line shift fork, the ball rolls in the spout and makes colluding line shift fork reciprocating swing, collude line shift fork and drive and collude sword linear reciprocating motion and realize colluding the line, two relative lateral walls on the slider are run through at the both ends of spout, the interval of ventilating has.

Furthermore, the ball partially or totally stretches into the sliding groove to be matched.

Furthermore, the thread hooking device comprises a thread hooking base plate, and a pull rod guide seat for guiding the thread hooking pull rod to do linear reciprocating motion is arranged on the thread hooking base plate.

Furthermore, the pull rod guide seat comprises a base connected with the line hooking bottom plate and a limiting part connected with the base, a first groove is formed in the base, a notch of the first groove faces away from the line hooking bottom plate, a second groove is formed in the limiting part, a notch of the second groove faces the line hooking bottom plate, the limiting part is fixed to the side face of the base, and the first groove and the second groove are staggered in the axial direction of the line hooking pull rod and act on the line hooking pull rod to achieve guiding.

Furthermore, the limiting part is provided with a fastening groove, the notch of the fastening groove faces the line hooking bottom plate, the side face of the base is provided with a threaded hole, and a fastening bolt penetrates through the fastening groove to be connected with the threaded hole to fix the limiting part.

Furthermore, the limiting piece is of a plate-shaped structure, and the limiting piece is perpendicular to the axial direction of the line hooking pull rod and is fixed with the base.

Furthermore, the base comprises a fixing plate and a connecting plate, the fixing plate is tightly attached to the wire hooking bottom plate and fixed, and the connecting plate is bent relative to the fixing plate and is perpendicular to the axial direction of the wire hooking pull rod.

Furthermore, one end part of the wire hooking pull rod is matched with the pull rod guide seat.

Furthermore, the thread hooking bottom plate is provided with an auxiliary positioning hole for assisting in installing the thread hooking bottom plate.

Furthermore, the outer diameter of the ball is smaller than the width of the sliding groove, at least two balls are arranged, at least one of the balls rolls along one groove wall of the sliding groove, and at least one of the balls rolls along the other groove wall of the sliding groove.

After the technical scheme is adopted, the invention has the following advantages: firstly, the linking of the thread hooking pull rod and the thread hooking shifting fork is realized by utilizing the structure that the sliding chute is matched with the ball, because the thread hooking pull rod does linear reciprocating motion, the acting force of the sliding block on the ball only exists in the reciprocating motion direction of the thread hooking pull rod, the reaction force of the ball on the sliding block is also positioned on the reciprocating motion of the thread hooking pull rod, the ball transmits the acting force to the thread hooking shifting fork, one part of the component force enables the thread hooking shifting fork to rotate, the other part of the component force enables the ball to rotate to offset, the ball rolls in the sliding chute and bears the acting force in the rolling direction of the ball very little because of the friction force between the ball and the sliding block, the reaction force generated by the rotation of the thread hooking shifting fork is transmitted to the ball, the ball can utilize the self-rolling to offset the other part of the reaction force, and the thread hooking pull rod can hardly, the wire hooking driving device can completely realize good reciprocating motion, the wire hooking pull rod and the wire hooking shifting fork cannot be clamped due to interference of acting force, the stability and the reliability of wire hooking transmission are ensured, the efficiency of the wire hooking driver can be improved, the wire hooking driver with lower output power can be correspondingly selected, and the cost is reduced; secondly, the part of ball and spout contact can not pile up the dust because of the motion of ball, nevertheless appear the dust and pile up between tip and the spout in order to prevent the ball, the design runs through two relative lateral walls on the slider with the both ends of spout, the tip that stretches into the spout on the ball has the interval of ventilating between the spout, the ball rolls in the spout and can produce the air current, this air current can take the dust directly to pass the interval of ventilating, and can not pile up in the spout, ensure to collude the line pull rod and collude the line shift fork and can effectively work for a long time, not only life obtains the extension, and the maintenance cost of machine also obtains reducing, be favorable to reducing enterprise manufacturing cost. Because the spout is perpendicular to collude the reciprocating motion direction setting of line pull rod, and generally collude the line pull rod and be horizontal motion, collude the sword and be vertical motion, consequently can regard as the spout to be vertical setting, be located the direction of gravity promptly, consequently can be more favorable to the dust to pass. The vertical, horizontal and vertical are approximate expressions, are not absolute values, and are within an error allowable range.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 3 is a schematic view of a wire hooking driver and a wire hooking pull rod in a transmission connection according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 5 is a schematic view of a position-limiting element according to an embodiment of the invention;

fig. 6 is a schematic structural diagram (iv) according to the first embodiment of the present invention;

FIG. 7 is a schematic structural diagram according to a second embodiment of the present invention;

fig. 8 is a schematic view illustrating the cooperation between the sliding groove and the ball in the second embodiment of the present invention.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1 and 2, the invention provides a thread hooking device, which comprises a thread hooking driver, a thread hooking pull rod 1, a thread hooking shift fork 2 and a thread hooking knife 3, wherein the thread hooking driver drives the thread hooking pull rod 1 to reciprocate linearly, a slide block 11 is arranged on the thread hooking pull rod 1, the slide block 11 is provided with a slide groove 111 vertical to the axial direction of the thread hooking pull rod 1, the slide block 11 reciprocates linearly along with the thread hooking pull rod 1, a ball 21 is arranged on the thread hooking shift fork 2, the ball 21 rolls in the slide groove 111 to enable the thread hooking shift fork 2 to swing in a reciprocating manner, the thread hooking shift fork 2 drives the thread hooking knife 3 to reciprocate linearly to hook threads, two ends of the slide groove 111 penetrate through two opposite side walls on the slide block 11, and a ventilation interval 112 is arranged between an end part of the ball 21.

Firstly, the linking of the hook pull rod 1 and the hook fork 2 is realized by the matching structure of the sliding chute 111 and the ball 21, because the hook pull rod 1 makes a straight reciprocating motion, the acting force of the slide block 11 on the ball 21 only exists in the reciprocating motion direction of the hook pull rod 1, the reacting force of the ball 21 on the slide block 11 is also on the reciprocating motion of the hook pull rod 1, the ball 21 transmits the acting force to the hook fork 2, one part of the acting force makes the hook fork 2 rotate, the other part of the acting force makes the ball 21 self-rotate to offset, the ball 21 rolls in the sliding chute 111, and the acting force of the slide block 11 in the rolling direction of the ball 21 is very small because of the friction force between the two parts, therefore, the reacting force generated by the rotation of the hook fork 2 is transmitted to the ball 21, and the ball 21 can use self-roll to offset the other part of the reacting force, therefore, the line hooking pull rod 1 can hardly bear the acting force which causes the line hooking pull rod to swing, good reciprocating motion can be completely realized, the line hooking pull rod 1 and the line hooking shifting fork 2 cannot be clamped due to the interference of the acting force, the stability and the reliability of line hooking transmission are ensured, the efficiency of a line hooking driver can be improved, a line hooking driver with lower output power can be correspondingly selected, and the cost is reduced; secondly, the part of the ball 21 contacting the sliding groove 111 can not accumulate dust due to the movement of the ball 21, but in order to prevent the dust accumulation between the end of the ball 21 and the sliding groove 111, the two ends of the sliding groove 111 penetrate through the two opposite side walls of the sliding block 11, a ventilation gap 112 is arranged between the end of the ball 21 extending into the sliding groove 111 and the sliding groove 111, the ball 21 rolls in the sliding groove 111 to generate an air flow, the air flow can directly penetrate through the ventilation gap 112 with the dust, and can not accumulate in the sliding groove 111, so that the long-term effective work of the line hooking pull rod 1 and the line hooking shift fork 2 is ensured, the service life is prolonged, the maintenance cost of the machine is also reduced, and the production cost of enterprises is favorably reduced. Because the spout 111 is perpendicular to the reciprocating direction of the line hooking pull rod 1, and the line hooking pull rod 1 generally moves horizontally, and the hook knife 3 moves vertically, the spout 111 can be considered to be vertically arranged, namely, in the gravity direction, thereby being more beneficial to the dust to pass through. The vertical, horizontal and vertical are approximate expressions, are not absolute values, and are within an error allowable range.

The line hooking driver can adopt a motor, as seen in combination with fig. 3, an output shaft of the motor is connected with a line hooking roller 4, a roller 41 is eccentrically arranged on the line hooking roller 4, a line hooking swing rod 5 is arranged on the rack 9, one end of the line hooking swing rod 5 is provided with a guide groove 51, the middle of the line hooking swing rod 5 is rotatably connected to the rack 9, the other end of the line hooking swing rod 5 is connected with a line hooking pull rod 1 through a universal joint 52, the roller 41 stretches into the guide groove 51 for cooperation, the roller 41 drives the line hooking swing rod 5 to swing when following the rotation of the line hooking roller 4, and the line hooking swing rod 5 swings to drive the line hooking pull rod 1. In addition to this, the hook pull rod 1 can also adopt other conventional modes capable of realizing linear reciprocating motion.

The ball 21 adopts the cylinder structure, is connected with the line fork 2 of colluding through the round pin axle, and for the contact frictional force of ball 21 and slider 11 is littleer, can select ball 21 part to stretch into spout 111 and cooperate, and the part is stretched into and is established on the basis of stabilizing the transmission. In this embodiment, one ball 21 is provided, and the sliding groove 111 and the ball 21 may be in clearance fit for smooth rolling of the ball 21. Of course, for more stable transmission, the balls 21 may be fully inserted into the sliding grooves 111 for engagement. Can prevent through stroke control that ball 21 breaks away from spout 111, consequently spout 111 need not set up limit structure, can form the structure that runs through, does not block, makes things convenient for the dust to pass through, avoids piling up.

The thread hooking device comprises a thread hooking bottom plate 6, and a pull rod guide seat for guiding the thread hooking pull rod 1 to do linear reciprocating motion is arranged on the thread hooking bottom plate 6. The pull rod guide seat can further ensure the straightness and stability of the reciprocating motion of the wire hooking pull rod 1. With reference to fig. 4, 5 and 6, in this embodiment, the pull rod guide seat includes a base 7 connected to the wire hooking base plate 6 and a limiting member 72 connected to the base 7, a first groove 701 is disposed on the base 7, a notch of the first groove 701 faces away from the wire hooking base plate 6, a second groove 721 is disposed on the limiting member 72, a notch of the second groove 721 faces the wire hooking base plate 6, the limiting member 72 is fixed on a side surface of the base 7, and the first groove 701 and the second groove 721 are staggered in an axial direction of the wire hooking pull rod 1 and act on the wire hooking pull rod 1 to achieve guiding. The limiting piece 72 can be separated from the base 7, so that the first groove 701 forms an open structure, the hooking pull rod 1 can be conveniently installed and detached, the limiting piece 72 and the base 7 are fixedly connected to form a closed structure to limit the hooking pull rod 1 in the radial direction, the limiting piece 72 is fixed to the side face of the base 7, the limiting piece 72 and the universal joint 52 form three-point limiting on the hooking pull rod 1, and the hooking pull rod 1 is further ensured to reciprocate axially.

The limiting member 72 is provided with a fastening slot 722, a notch of the fastening slot 722 faces the hook bottom plate 6, a side surface of the base 7 is provided with a threaded hole, and the fastening bolt 73 passes through the fastening slot 722 to be connected with the threaded hole to fix the limiting member 72. The fastening slot 722 adopts an open slot structure, which facilitates the disassembly and assembly of the limiting member 72, facilitates the adjustment of the position of the limiting member 72 relative to the base 7, and prevents the closed structure formed by the first groove 701 and the second groove 721 from forming an interference fit with the hook wire pull rod 1.

In the present embodiment, the position-limiting member 72 is a plate-shaped structure, and the position-limiting member 72 is fixed to the base 7 perpendicular to the axial direction of the wire-hooking rod 1. Therefore, the contact area between the second groove 721 and the hook pull rod 1 is small, so that the reciprocating motion of the hook pull rod 1 is not hindered, and the friction between the limiting member 72 and the hook pull rod 1 is reduced.

Because one end of the wire hooking pull rod 1 is movably connected with the wire hooking swing rod 5, the other end of the wire hooking pull rod 1 is matched with the pull rod guide seat, so that sliding friction is reduced by only performing finish machining on the end of the wire hooking pull rod 1, the whole wire hooking pull rod 1 is not required to be subjected to finish machining, and the machining cost can be reduced. The thread hooking pull rod 1 can be prevented from being separated from the pull rod guide seat through stroke control, and the structure is simplified.

Referring to fig. 6, the thread hooking base plate 6 is provided with an auxiliary positioning hole 61 for assisting in installing the thread hooking base plate 6. Two to three auxiliary positioning holes 61 can be arranged, in the step of mounting components before assembling the machine, the auxiliary positioning holes 61 are used for pre-positioning and mounting the thread hooking bottom plate 6, the position of the hook cutter 3 can be determined in advance, and the uniformity of the height of the hook cutter 3 is ensured; in the model that the head distance is little, chassis bottom space is not enough, fix a position in advance and collude the difficult degree that line ware can greatly reduced later stage machine assembly, improve the flexibility of assembly.

In this embodiment, the hooking knife 3 is slidably connected to the hooking bottom plate 6, and the movement track of the hooking knife is limited by the linear track, and the track may be a groove or a rib. In addition, according to the actual thread hooking requirement, the thread hooking knife 3 can also be movably connected to the thread hooking bottom plate 6 in a rotating or integral oblique moving mode and the like.

Example two:

as shown in fig. 7, the outer diameter of the ball 21 is smaller than the width of the sliding groove 111, two balls 21 can be arranged, one of the balls rolls against one groove wall 1111 of the sliding groove 111, and the other ball rolls against the other groove wall 1112 of the sliding groove 111, because the two balls 21 respectively move synchronously with the sliding block 11 in two directions, the reciprocating motion of the hook pull rod 1 can be ensured to drive the hook shift fork 2 to swing in time, the hook knife 3 can be extended and retracted in time and rapidly, and the hook efficiency is ensured. In order to reduce the occupied space and avoid the excessive width of the sliding slot 111, the two balls 21 are distributed in the sliding slot 111 in a staggered manner, as shown in fig. 8. It will be appreciated that the number of balls 21 may be increased as desired.

Other contents not described in this embodiment may refer to embodiment one.

Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.

Claims

1. The utility model provides a collude line ware, includes colludes line driver, colludes line pull rod, colludes line shift fork and colludes the sword, colludes the line driver and drives colludes line pull rod linear reciprocating motion, a serial communication port, be equipped with the slider on colluding the line pull rod, the slider is equipped with the axial spout of perpendicular to colluding the line pull rod, slider is along with colluding line pull rod linear reciprocating motion, is equipped with the ball on colluding the line shift fork, the ball rolls in the spout and makes colluding line shift fork reciprocating swing, colludes line shift fork and drives colluding sword linear reciprocating motion and realize colluding the line, the both ends of spout run through two relative lateral walls on the slider, it has the interval of ventilating to stretch into between the.

2. The thread hooking device of claim 1, wherein the ball partially or completely extends into the sliding slot for engagement.

3. The thread hooking device of claim 1, wherein the thread hooking device comprises a thread hooking base plate, and a pull rod guide seat for guiding the thread hooking pull rod to reciprocate linearly is arranged on the thread hooking base plate.

4. The thread hooking device of claim 3, wherein the pull rod guide seat comprises a base connected to the thread hooking base plate and a limiting member connected to the base, the base is provided with a first groove, a notch of the first groove faces away from the thread hooking base plate, the limiting member is provided with a second groove, a notch of the second groove faces the thread hooking base plate, the limiting member is fixed to a side surface of the base, and the first groove and the second groove are staggered in an axial direction of the thread hooking pull rod to act on the thread hooking pull rod to achieve guiding.

5. The thread hooking device of claim 4, wherein the limiting member is provided with a fastening slot, a notch of the fastening slot faces the thread hooking base plate, a threaded hole is formed in a side surface of the base, and a fastening bolt passes through the fastening slot and is connected with the threaded hole to fix the limiting member.

6. The thread hooking device of claim 4, wherein the limiting member is a plate-shaped structure, and the limiting member is fixed to the base perpendicular to the axial direction of the thread hooking pull rod.

7. The thread hooking device of claim 4, wherein the base comprises a fixing plate and a connecting plate, the fixing plate is fixed to the thread hooking bottom plate, and the connecting plate is bent relative to the fixing plate and perpendicular to the axial direction of the thread hooking pull rod.

8. The thread hooking device of claim 3, wherein one end of the thread hooking pull rod is engaged with the pull rod guide seat.

9. The thread hooking device of claim 3, wherein the thread hooking base plate is provided with an auxiliary positioning hole for assisting in installing the thread hooking base plate.

10. The thread hooking device of claim 1, wherein the outer diameter of the ball is smaller than the width of the sliding groove, and the ball is provided with at least two balls, at least one of which rolls against one groove wall of the sliding groove, and at least one of which rolls against the other groove wall of the sliding groove.