CN200985424Y

CN200985424Y - Tension release device for embroidery machine

Info

Publication number: CN200985424Y
Application number: CN 200620129438
Authority: CN
Inventors: 叶本毛; 蔡利龙
Original assignee: Shenzhou Technology Hongkong Co ltd
Current assignee: Shenzhou Technology Hongkong Co ltd
Priority date: 2006-07-11
Filing date: 2006-07-11
Publication date: 2007-12-05
Anticipated expiration: 2016-07-11

Abstract

The utility model provides an easing tension device for embroidery machines, wherein, the easing tension device for embroidery machines comprises a beveling device which is arranged on the embroidery machine to support the embroidery thread away from the embroidery needle, with the butt connection of the beveling device with the embroidery thread, so as to increase the angle between the embroidery needle and the embroidery thread before crossing the embroidery needle. Thereby the utility model uses the simple purely mechanical structure to change the contact angle between the embroidery thread and the eye of the embroidery needle. Since the angle which is close to the cloth adjusts the tension of the lower line and eases the production of the high tension point, provides the obvious advantage of reducing thread break.

Description

The tension force of the embroidery machine device of releiving

Technical field

The utility model relates to a kind of embroidery line tension of being located on bull formula computerized emboridering machine device of releiving.Embroider the contact angle of line in embroidering pinprick in particular to a kind of the change, thereby the friction of embroidering line and embroidering pin is reduced, can reduce the mechanical device simple in structure that produces high-tension point.

Background technology

As shown in Figure 1, multi-head computerized embroidery technique can be sketched to the embroidery line that is arranged in the line tube (thread spool) 1 on the embroidery machine, guide on the embroidery head 12, cooperate thread take-up tension lever 13 and embroider pumping of pin 14, pierce in the cloth with embroidering line embroidering pin 14, the bottom line of supplying with rotating shuttle 16 twines mutually and generates chain knot.The formation of embroidery style is to drive embroidery frame 15 by the syncmotor of being located at x and y direction, and cooperates and embroider pin and move up and down and generate a series of chain knot, thereby forms the style that is generated by computer.

As everyone knows, getting well with bad of embroidery quality depends on whether the tension force of chain knot is suitable.Tension force is too little can to form loose style, and tension force is too high, makes chain knot too solid and embroider line and fracture in the embroidery process easily again.

The tension system of embroidery machine can be sketched and be, as shown in Figures 2 and 3, to guide to pretension unit 2 from the yarn of line tube (thread spool) 1, carry out pretension, enter tie unit (tensioner) 3 so that yarn is strained from this pretension unit (pre-tensioner) 2 then, guide to shank case (needle bar case) 5 by carbine (spring hook) 4, and predetermined yarn is directed at embroidery pin (needle) 9 by the thread take-up tension lever (take-up lever) 6 that is arranged on shank case 5.Wherein, yarn from thread take-up tension lever 6 is threaded into the embroidery pinprick from low level cable guiding device (lower thread guide) 7 as top line (upper thread) 21, and utilizes presser feet (presser foot) 10 to form chain knot (lock-sfitches on fabric) 30 on fabric 40 with the bottom line from bottom line rotating shuttle (under thread bobbin) 8.Thereby in the embroidery process, embroidery machine is because the influence of various factors can cause embroidering the line tension raising, and embroidering line under the situation that tension force can not get releiving can fracture.After embroidering the line broken string, the essential time-out of embroidery machine comes threading, and then starts to mend and embroider the part that has just broken, thereby loses a large amount of production times, reduced production efficiency.

Thereby, in order to reduce the generation of broken string, having proposed a kind ofly to go to change the mode of embroidering the pin path with software program, attempt reduces the friction of pin and line, embroiders line and concerns with friction between the embroidery pin but really do not solve.And the design of embroidery pattern has millions upon millions of kinds, and the personnel of design style do not have such skill yet, goes to judge earlier to avoid the path of breaking.The scheme of doing improvement from the bottom line rotating shuttle is also arranged in addition, bottom line is to beat chain knot with upper thread on cloth, and cloth is soft, when bottom line produces very high tension force, cloth can be out of shape and the high-tension that is produced of having releived slightly, but and unresolved embroidery line with embroider pin under high-tension, embroidering the friction that the pinprick place produces, thereby can't avoid embroidering fractureing of line.

What break is owing to embroider the limit that the line tension of line has surmounted its toughness, particularly more frequently takes place when embroidering at a high speed.Owing to be subjected to influence of various factors, the Tension Control of embroidering line is very difficult.Comprise embroider that line thickness inequality, fabric thickness are inconsistent, these factors of the vibrations of embroidering line or the like all can influence and embroider fractureing of line.Embroider the tension force of line in embroidery if can reduce, outage will reduce accordingly.Owing to relate to the principle of dynamics and the characteristic of embroidering line, in the embroidery industry, temporarily there is not efficient and simple method, be used to reduce outage.

From a series of broken string image analysing computers that high-speed motion picture camera, photograph as can be known, most of broken string occurs in to be embroidered between line and the embroidery pinprick, by setting up Analysis of Mathematical, calculating and experimental verification, can be sure of to embroider line and the contact angle of embroidering pinprick, be one of crucial broken string factor.Generally be used for the device of adjustment of tonicity, all design in last drawing lines, it is distant that distance is embroidered pinprick, and in the embroidery process, the tension force of following drawing lines can change with various factors and cause and can't regulate.

Patent documentation 1 U.S. Pat 2004129191

Patent documentation 2 U.S. Pat 2004/0154505 A1

Patent documentation 3 U.S. Pat 4949657

Patent documentation 4 U.S. Pat 4706589

Patent documentation 5 U.S. Pat 4320712

The utility model content

The purpose of this utility model is to provide a kind of increasing to embroider the contact angle of line in embroidering pinprick, thereby the friction of embroidering line in the embroidery and embroidering pinprick is reduced, releive and embroider the high-tension of crossing that line occurs in the embroidery process, device thereby the tension force of embroidery machine that can reduce the generation of broken string is releived.

The tension force of the present utility model device of releiving, it is characterized in that having the expansion angle apparatus, this expansion angle apparatus is arranged on the embroidery machine, to embroider alignment and prop away from embroidering the pin direction, by this expansions angle apparatus with embroider the line butt and increase and embroider line and pass before the embroidery pin and angle between the embroidery pin.

Best, above-mentioned expansion angle apparatus is to constitute the drawing lines excessively that is combined into one with shank case or shell.

Best, the longitudinal moving device of above-mentioned expansion angle apparatus on shank, being provided with, also can sliding up and down.

Best, above-mentioned expansion angle apparatus for from the shank case or near overhead positions to embroidering alignment away from embroidering the laterally horizontal mobile liftout attachment of slip of current needlework location that the pin direction props predetermined angular.

Best, above-mentioned expansion angle apparatus is spring leaf or tension force/compression spring or horizontal mobile liftout attachment or above-mentioned any combination more than two.

Device moves with shank if employing the utility model, tension force are releived, and changes with simple pure mechanical mechanism and embroiders line and the contact angle of embroidering pinprick.Because this angle occurs in very near the position of cloth sheet, in order to regulate down the tension force of drawing lines, has slowed down the generation of high-tension point, thereby brought the break effect of generation of tangible minimizing.Because the utility model has slowed down the high-tension point of embroidering line and being produced, the generation that has reduced broken string in the embroidery way, thereby can enhance productivity.

Advantage of the present utility model reduces with the friction that the embroidery pin produces under high-tension, in embroidery pinprick place embroidering line, and can transform at an easy rate and be applied on the embroidery machine for can simply the very corn of a subject being improved

Description of drawings

Fig. 1 is the structure chart of expression bull formula computerized emboridering machine.

Fig. 2 is the figure of the tension system of expression computerized emboridering machine line.

Fig. 3 is near the partial enlarged drawing of the structure of embroidery pin of expression tension system shown in Figure 2.

Fig. 4 is the figure of the embroidery line of expression in the prior art in the path of embroidering the pinprick place.

Fig. 5 is a partial enlarged drawing of embroidering line and pinprick contact portion in the presentation graphs 4.

Fig. 6 be expression utilize embroidery machine when embroidery of prior art embroider line pass embroider before the pin with the embroidery pin between the figure of angulation.

Fig. 7 be expression utilize the tension force have an embodiment of the present utility model to releive to embroider when the embroidery machine of device is embroidered line to pass to embroider before the pin with the embroidery pin between the figure of angulation.

Fig. 8 is the tension force of the expression the utility model embodiment device of releiving.

Fig. 9 is the releive local enlarged side view of device of expression tension force embodiment illustrated in fig. 8.

Figure 10 is the tension force of expression the utility model another embodiment device of releiving.

Figure 11 is the releive local enlarged side view of device of expression tension force embodiment illustrated in fig. 10.

Figure 12 is the tension force of expression the utility model another embodiment device of releiving.

Figure 13 is the releive local enlarged side view of device of expression tension force embodiment illustrated in fig. 12.

The specific embodiment

The utility model goes to do the broken string case study from embroidering the motion of line the embroidery process.Describe the utility model below with reference to the accompanying drawings in detail.

Fig. 4 and Fig. 5 are the embroidery line dynamic models of having simplified, and from analyzing as can be known, the contact angle of embroidering line is related to the generation of high-tension greatly.Experimental result proves, increases and embroiders line and the contact angle of embroidering pin, can slow down the generation of high-tension, thereby make embroidery more smooth.

Fig. 5 has shown that the contact angle α of existing embroidery machine is too little, has produced high-tension, has increased outage.Wherein, 50 be respectively the top line plane.In order to improve outage, contact angle α must increase.In actual measurement, contact angle α is difficult to tolerance.But embroider the angle β between line (top line) and the embroidery pin, be easy to measure, and with above-mentioned contact angle α associated.Therefore, can utilize additional dingus to realize increasing the purpose of angle β, make the embroidery line that bigger contact angle be arranged before lunging the cloth sheet, not influence simultaneously and embroider moving up and down of pin and presser feet.

Fig. 6 represents be in the common embroidery machine expansion angle apparatus of the present utility model is not installed, embroider line pass embroider before the pin with the embroidery pin between angulation.Fig. 7 is an example of the present utility model.Illustrative is to use as expansion angle apparatus of the present utility model to be used to regulate the spring leaf 22 that increases angle β, it can be installed in linkage on the shank 20 and from shank 20 with shank 20 or presser feet 10 and give prominence to the direction of top line 21, comprise passing channel 23, top line 21 can pass before the embroidery pin and the angle β between the embroidery pin thereby increase the embroidery line by above-mentioned passing channel 23 to propping certain angle away from the direction of embroidery pin.

In addition, expansion angle apparatus of the present utility model can also following mode be provided with.

As Fig. 8 and shown in Figure 9, can be arranged to the drawing lines 24 excessively that is combined into one with shank case or shell.This is crossed drawing lines 24 and bloats to the direction of top line 21, with top line 21 to propping certain angle away from the direction of embroidering pin, thereby increase above-mentioned angle β.Dotted line 60 expressions embroidery thread path in the past among the figure.

In addition, as shown in Figure 10 and Figure 11, the chute 26 of fore-and-aft tilt can also be set on shank case or shell, one end of longitudinal moving device 25 moves in this chute, the other end and top line 21 butts, with top line 21 to propping certain angle away from the direction of embroidering pin, thereby and can slide up and down and change increasing angles.

And, as Figure 12 and shown in Figure 13, can also be provided with on the shank horizontal slip the shank case or near overhead positions to embroidering alignment away from embroidering the horizontal mobile liftout attachment that the pin direction is propped the current needlework location of predetermined angular, plunger mechanism 27 etc. for example, the arrow among Figure 12 is represented plunger movement.With top line 21 to propping certain angle away from the direction of embroidering pin, thereby increase above-mentioned angle β, and utilize plunger movement to change to increase embroider line pass embroider pin before and embroider angle between the pin, make this angle become suitable angle.Wherein, 70 expressions of the solid line among Figure 13 embroidery thread path of the present invention.

Wherein, suitable angle is by the decision of the characteristic of different equipment and materials, as the embroidery lineal travel of friction, thickness and thread take-up tension lever etc.But final, in existing embroidery machine system, change is not limited only on the contact angle of above-mentioned line and pin, and the improvement of its description should relate to mechanical structure to the improvement of above-mentioned contact angle and/or the machine of a new generation, all should be included in the scope of the present utility model.

Increase of the present utility model embroider line pass embroider pin before and the expansion angle apparatus of embroidering the angle between the pin can be arranged on the embroidery machine or be built in wherein.

The effect of utility model

The utility model can be applicable on the multiple-head type computerized emboridering machine, adjusts and embroiders line and embroider connecing of pin The feeler degree reduces friction, thereby reduces broken string, reduces downtime, gives birth to thereby promote Produce efficient, have the market development potential quality.

Claims

1, a kind of tension force of embroidery machine device of releiving, it is characterized in that having the expansion angle apparatus, this expansion angle apparatus is arranged on the embroidery machine, to embroider alignment and prop away from embroidering the pin direction, by this expansions angle apparatus with embroider the line butt and increase and embroider line and pass before the embroidery pin and angle between the embroidery pin.

2, the tension force as claimed in claim 1 device of releiving is characterized in that, above-mentioned expansion angle apparatus is to constitute with shank case or shell are combined into one to cross drawing lines.

3, the tension force as claimed in claim 1 device of releiving is characterized in that, above-mentioned expansion angle apparatus on shank, be provided with, and the longitudinal moving device that can slide up and down.

4, the tension force as claimed in claim 1 device of releiving is characterized in that, above-mentioned expansion angle apparatus for from the shank case or near overhead positions to embroidering alignment away from embroidering the laterally horizontal mobile liftout attachment of slip of current needlework location that the pin direction props predetermined angular.

5, the tension force as claimed in claim 1 device of releiving is characterized in that above-mentioned expansion angle apparatus is spring leaf or tension force/compression spring or horizontal mobile liftout attachment or above-mentioned any combination more than two.