KR200273167Y1 - A horizontal guarding apparatus for a needle moving body of embroidery head - Google Patents

Abstract

The present invention not only maintains precision and hardness but also improves assembly and improves productivity and reduces manufacturing costs by using a standard polishing rod and roller at the corresponding portions of the guide rail guided in contact with each other. The needle movable body horizontal guide device of the embroidery head.

Needle moving body horizontal guide device of the embroidery head according to the present invention can not only improve the productivity of the embroidery machine and reduce the manufacturing cost, but also has the advantage of easy repair and replacement in case of breakage or wear of components.

Description

Needle mover horizontal guide of embroidery head {A HORIZONTAL GUARDING APPARATUS FOR A NEEDLE MOVING BODY OF EMBROIDERY HEAD}

The present invention relates to a device for guiding the accurate transfer of the needle movable body horizontally transported to switch the drive from the embroidery head to the corresponding needle according to the embroidery color thread, more specifically, the corresponding portion of the guide rail guided in contact with each other This invention relates to a needle moving body horizontal guide device of embroidery head which can maintain the precision and hardness even if the required processing process is lowered by using the standard polishing rod and roller, and can improve the assembly performance and reduce the production cost. .

In general, embroidery machines such as computer embroidery machines, multi-head computer embroidery machines, and computer quilting machines for finished products are largely embroidered by the embroidery machine controller according to the sewing machine which handles sewing and the data input into a predetermined memory instead of a hand. It consists of the frame part that controls the movement of the frame by controlling the X-axis pulse motor and Y-axis pulse motor. In other words, the embroidery machine in the present invention is a concept including both a computer embroidery machine, a multihead computer embroidery machine, a computer quilting machine, and the like for a finished product.

The upper part of the sewing machine is located in the upper part of the frame and has an embroidery head composed of needles hanging colorful embroidery threads. The embroidery head is moved horizontally by the needle movable body is coupled to the head body. Several needle shafts are fixed to the needle movable body to be able to elevate vertically, and the head body is equipped with a needle driving member which is powered up and down by the main shaft so that the needle body can be elevated up and down. This needle driving piece is held up or down by the rotation of the cam by being coupled to the cam fixed to the guide piece and fixed to the head body. Of course, the cam is coupled to the main shaft of the embroidery machine and rotated by the rotation of the main shaft to drive the needle driving piece coupled thereto, resulting in raising or lowering the needle to embroider the fabric placed on the frame. To this end, the needle shaft has a hook portion formed on the needle driving piece corresponding to the engaging projection. The hook portion of the needle drive piece is raised or lowered by the hook projection of the needle shaft. At this time, the needle movable body is horizontally moved on the head body so that the needle protrusion hangs on the hook portion of the needle driving piece to move the needle on the head body to embroider the needle.

In this way, the needle movable body is moved horizontally on the head body to switch the needle shaft. At this time, the contact portion is provided with a guide device for guiding the horizontal transfer. This guide device is usually constructed by fixing a pair of guide rails having excellent processing precision and hardness to the corresponding portions of the head body and the needle movable body, respectively. An example of this is disclosed in FIGS. 1 to 3.

1 is an exploded perspective view showing a configuration of a conventional needle movable body horizontal guide device, FIG. 2 is an assembled perspective view of FIG. 1, and FIG. 3 is a side cross-sectional view of FIG.

As shown in the drawing, the conventional needle movable body horizontal guide device fixes the first guide rail 20 to the head body 10 and supports bearings to the needle movable body 30 corresponding to the lower surface of the first guide rail 20. The second guide rails 50 may be fixed to a portion corresponding to the top surface of the first guide rail 20 in a state in which the 40 guides are fixed to the bottom surface of the first guide rail 20. Both upper and lower sides of the contact to guide the horizontal transfer of the needle movable body 30 in the head body (10). Since the support bearings 40 located below the needle movable body 30 use standard products, they do not require processing and are easy to assemble, but the second guide rails slidingly contact the upper surface and the upper surface of the first guide rail 20. The reference numeral 50 guides the movement in the state where the load of the needle movable body 30 is loaded, so that high processing precision and hardness are required. In particular, as described above, the upper surface of the first guide rail 20 and the lower surface of the second guide rail 50 in contact therewith are in contact with the load of the needle movable body 30 in order to reduce the friction thereof. The movable piece 60 is interposed. To this end, the V grooves 22 and 52 are machined in corresponding surface portions of the first guide rail 20 and the second guide rail 50, respectively. The upper and lower first and second V grooves 22 and 52 are combined to form a substantially rectangular groove, and roller movable pieces 60 in which rollers 64 and 66 are rotatably fixed to a square bar 62 therein. ) Is inserted to reduce friction and wear during the movement of the second guide rail 50 in the first guide rail 20 and to induce smooth movement. When the second guide rail 50 moves in the first guide rail 20, the roller movable pieces 60 contact all surfaces of the first and second V grooves 22 and 52, so that the rollers 64 and 66 are Paired in a direction orthogonal to the square bar 62 and arranged in pairs before and after to reduce the transfer friction.

When the needle movable body 30 is transferred from the head body 10, the first and second V grooves 22 and 52 of the first guide rail 20 and the second guide rail 50 and rollers inserted therein are The east side 60 serves as the most important guiding role, and the first and second V grooves 22 and 52 in contact with the rollers 64 and 66 of the roller movable piece 60 have high precision and hardness for accurate horizontal feed. Is required. As such, the guide rails 20 and 50 have disadvantages of difficulty in manufacturing and high manufacturing cost since the V grooves 22 and 52 require high precision processing. In addition, it is difficult to form the insertion grooves and to install the fixed shafts so that the plurality of rollers 64 and 66 can be arranged in the small roller movable piece 60, so that the drive device of the conventional needle movable body is difficult to manufacture. Rather, there was a problem in that the structure was complicated and costly production costs.

Accordingly, an object of the present invention is to solve the above-mentioned drawbacks, and by using a standard polishing rod and a roller in the corresponding portion of the guide rail guided in contact with each other, it is possible to maintain precision and hardness even while lowering the required processing process. In addition to improving the assemblability is to provide a needle movable body horizontal guide device of the embroidery head to improve the productivity and reduce the production cost.

DETAILED DESCRIPTION A detailed description of embodiments of the present invention will be made with reference to the accompanying drawings, in which like numbers designate corresponding parts in the drawings.

1 is an exploded perspective view showing the configuration of a conventional needle movable body horizontal guide device,

Figure 2 is an assembled perspective view of Figure 1,

3 is a side cross-sectional view of the side of FIG.

Figure 4 is an exploded perspective view showing the configuration of the needle movable body horizontal guide device of the embroidery head according to the present invention,

5 is an assembled perspective view of FIG. 4,

FIG. 6 is a side cross-sectional view of FIG. 5 viewed from the side;

Figure 7 is an exploded perspective view showing in detail only the guide rail portion in the present invention.

** Explanation of symbols for main parts of drawings **

10: head body 30: needle movable body

100: guide rail 102: mounting groove

110: abrasive rod 120: main member

122: recessed part 124: fastening hole

130: screw 140: side plate

142: through hole 144: curved locking jaw

200: guide roller 202: annular groove

300: guide bearing 310: eccentric shaft

312: Wrench Ball

Needle moving body horizontal guide device of the embroidery head according to the present invention for achieving the above object in the embroidery head to transfer the needle movable body horizontally from the head body to replace the embroidery needle, is fixed to the head body, the horizontal direction on the top A guide rail having a polishing rod; A guide roller seated on the polishing rod of the guide rail and horizontally moved while contacting and fixed to the needle movable body; And a guide bearing which is horizontally moved while contacting and rotating on the bottom of the guide rail and fixed below the needle movable body spaced apart from the guide roller by a predetermined distance.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to a preferred embodiment of the present invention.

Figure 4 is an exploded perspective view showing the configuration of the needle movable body horizontal guide device of the embroidery head according to the present invention, Figure 5 is an assembled perspective view of Figure 4, Figure 6 is a side cross-sectional view showing the side of FIG.

The needle movable body horizontal guide device is provided with a guide rail 100 fixed to the head body 10 horizontally as shown. The guide rail 100 has a mounting groove 102 is formed on the top, the polishing rod 110 is mounted there. Polishing rod 110 is a rod-shaped having a circular cross section, generally standardized commercially available. Therefore, not only can easily purchase and use the polishing rod 110 having a high precision and hardness, it is possible to purchase a large amount at a low cost. About half or more of the polishing rod 110 enters the mounting groove 102, and the rest of the polishing rod 110 protrudes toward the upper surface of the guide rail 100. Therefore, the guide rail 100, as shown in the figure is to form a guide surface of the upper surface is curved. Guide rollers 200 fixed to the needle movable body 30 are brought into contact with the polishing rod 110. At least one guide roller 200 is disposed on the needle movable body 30 in a horizontal direction, and preferably, a pair of the guide rollers 200 is spaced apart at a predetermined interval in the horizontal direction as shown. The guide rollers 200 are circumscribed to correspond to the curved surface of the polishing rod 110 in contact therewith, and the center of the guide rollers 200 is curved to form an annular groove 202.

As such, the upper surface of the guide rail 100 is guided while the polishing rod 110 and the guide roller 200 fixed thereto are contacted. At this time, the needle movable body 30 is also brought into contact with the bottom of the guide rail 100. In order to secure stability, the guide rollers 300 are mounted below the guide rollers 200 and spaced apart a predetermined distance from each other. The guide bearing 300 is composed of a pair of left and right, in close contact with the bottom surface of the guide rail 100 to rotate the needle movable body 30 in the head body 10 stably horizontally. When the guide bearing 300 is pivoted while the guide rail 100 is mounted, the shaft of the guide bearing 300 is in close contact with the bottom surface of the guide rail 100 while being guided toward the guide roller 200. ) By pressing the upper and lower surfaces of the guide rail 100 in close contact with the guide roller 200 and the guide bearing 300, respectively, to secure the running stability of the guide rail 100. Eccentric adjustment of the guide bearing 300 as described above is easily solved by inserting the wrench into the wrench hole 312 provided on the eccentric shaft 310 end side and then rotating.

The horizontal guide device is mounted on the upper and lower surfaces of the guide rails 100 fixed to the head body 10 as described above, respectively, the upper and lower guide rollers 200 and guide bearings 300 mounted thereon. To maintain a smooth movement by rotation of the rollers and bearings. At this time, the guide rollers 200 and the guide bearings 300 in contact with the guide rail 100 are not only standard products that can be purchased in large quantities, but also the guide rail 100 is a standard rod having excellent precision and hardness on one side thereof. By mounting 110 to be in contact with each other, precise guidance is possible without precision machining. That is, in the present invention, by mounting and using a standardized precision product, the same effect as that of precision machining is achieved. Such a structure of the guide rail portion and its processing method will be described in detail below with reference to FIG. 7.

Figure 7 is an exploded perspective view showing in detail only the guide rail portion in the present invention. With reference to this drawing will be described in detail for the manufacturing and assembly of the guide rail.

The guide rail, which previously required high precision machining, can be easily manufactured by applying the present invention. Referring to this, the guide rail 100 is a main member 120 provided with an abrasive rod 110 in contact with the above-described guide rollers, and a recessed portion 122 on which the abrasive rod 110 is seated on an upper side. And, the side plate 140 is fixed to one side of the main member 120 to grip and fix the polishing rod 110 seated on the recessed portion 122. In order to couple the side plate 140 and the main member 120, one side of the main member 120 is provided with fastening holes 124 to which the screw 130 is fastened, and the side plate 140 corresponding to the side plate 140 has a screw. Through-holes 142 through which the 130 enters are drilled. Therefore, the guide rail 100 has the through-hole 142 in a state in which the side plate 140 is in close contact with the side surface of the main member 120 after seating the polishing rod 110 on the recess 122 of the main member 120. Into the screw 130 into the coupling is coupled by fastening to the fastening hole 124 of the main member 120. When combined in this way, the N-shaped indentation of the main member 120 is a c-shaped mounting groove 102 for mounting the polishing rod 110 by the side plate 140. At this time, the wing of the main member 120 and the upper end of the side plate 140, which surrounds both sides of the polishing rod 110 is slightly higher than the center of the polishing rod 110, tightening the screw 130, the side plate 140 ) Is brought into close contact with the polishing rod 110, the polishing rod 110 is fixed in the mounting groove 102 by the gripping force. Further, the upper surface of the side plate 140 facing the polishing rod 110 is formed with a curved engaging jaw 144 corresponding to the corresponding curved surface of the polishing rod 110 toward the polishing rod 110 to the main member 120 and When engaged, the polishing rod 110 located in the mounting groove 102 acts to prevent it from being separated from the mounting groove 102.

The guide rail 100 of the present invention is obtained by processing the indentation portion 122 on which the polishing rod 110 is seated in a substantially N-shape from the main member of the square rod. That is, by cutting the upper one side of the main member 120 of the rectangular bar shape so that the upper one side is lost by the letter c. At this time, the machining does not require high precision. The reason is that the machined part is not in contact with the guide roller described above, but the abrasive rod 110 having high precision and hardness is in contact with the guide roller. This is because only a space that can be formed.

Now, with reference to the above drawings will be described in detail the operation and effect of the present invention.

As described above, the guide rail 100 is produced by cutting the one side of the upper portion of the main member 120 in the shape of N-shaped, while holding the side plate 140 with the polishing rod 110 mounted thereon screw 130 Fasten to a predetermined portion of the polishing rod 110 on its upper side. The guide rail 100 manufactured as described above is fixed to the head body 10, and the guide movable body 200 mounted on the needle movable body 30 corresponding thereto is mounted on the upper portion of the guide rail 100, that is, the polishing rod 110. Fix them in pairs from side to side. In addition, the guide bearings 300 contacting the bottom surface of the guide rail 100 are also mounted on the needle movable body 30 in pairs. As described above, the guide bearings 300 are eccentrically adjusted so that the upper and lower surfaces of the guide rails 100 are in close contact with the guide rollers 200 and the guide bearings 300, respectively, thereby securing driving stability. Then, the guide rollers 200 are moved while contacting the upper surface of the guide rail 100, and at the same time the lower surface of the guide rail 100 is moved while the guide bearings 300 are in contact rotation. As such, the guide rollers 200 and the guide bearings 300 move along the guide rails 100 in contact rotation, and as a result, the needle movable body 30 to which they are fixed is flexible in the horizontal direction in the head body 10. Will move.

Of course, as described above, the horizontal guide device is easy to manufacture because the abrasive rod 110, the guide rollers 200, and the guide bearings 300 all use standardized products, and in particular, the abrasive rod on the guide rail 100. Since the recess 122 for mounting the 110 does not require high processing precision, it can be easily processed and manufactured by assembly.

The embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only by this embodiment, the present invention Various changes and modifications are possible within the scope without departing from the spirit of the invention, as well as other equivalent embodiments.

As described above, the needle movable body horizontal guide device of the embroidery head according to the present invention can reduce the required processing process by using a standard polishing rod and a roller on the corresponding portion of the guide rail, which is easy to manufacture and simple in structure. This has the effect of being improved. Accordingly, there is an advantage that can improve the productivity of the embroidery machine and reduce the production cost. In addition, the horizontal guide device has the advantage that it is easy to repair and replace in the event of damage or wear of the component.

Claims (6)

In the embroidery head to transfer the needle movable body horizontally from the head body to replace the embroidery needle, A guide rail fixed to the head body and having an abrasive rod in a horizontal direction thereon; A guide roller seated on the polishing rod of the guide rail and horizontally moved while contacting and fixed to the needle movable body; And Horizontal moving device of the needle moving body of the embroidery head comprising a guide bearing fixed to the lower side of the needle movable body spaced apart from the guide roller by a horizontal horizontal movement in contact with the bottom of the guide rail. According to claim 1, wherein the guide rail is attached to the head body and the upper portion is broken by a predetermined portion to form a concave portion of the concave shape of the N-shaped recess in which the polishing rod is seated, and the polishing rod is attached to the opening side of the concave portion of the main member Needle moving body horizontal guide device of the embroidery head comprising a side plate and a screw for coupling the side plate and the main member. The needle movable body horizontal guide device of claim 2, wherein the recess is formed by a general cutting process that does not require high precision. 3. The polishing rod of claim 2, wherein at least about half of the polishing rod enters the recess, and the rest of the polishing rod protrudes from the upper surface of the guide rail, and the contacting roller is mounted on the protruding curved surface. Needle moving body horizontal guide device of the embroidery head, characterized in that the main surface of the guide roller is circumferentially encircled. According to claim 2, wherein the upper end of the side surface is formed with a curved jaw corresponding to the corresponding curved surface of the polishing rod toward the polishing rod is engaged with the main member to prevent the polishing rod located in the mounting groove from being separated from the mounting groove Needle moving body horizontal guide device of the embroidery head, characterized in that. The needle movable body horizontal guide device of claim 1, wherein the guide roller and the guide bearing are provided in the horizontal direction on the needle movable body in a pair of left and right, respectively.