Combined embedded bobbin case of vertical shuttle race

Abstract

A combined embedded bobbin case of a vertical shuttle race, said case comprising a bobbin case body (2) which is outwardly hollow, a bobbin flat spring (3) having a check function for an outer thread head of a bottom line, a bobbin case spring piece (4), and a bobbin (5) having a function of clamping an inner thread head of the bottom line; the bobbin case body (2) is embedded in a shuttle race (1) and an opening direction is in the same direction as the shuttle race (1) toward an outer end surface.

Description

A combined embedded bobbin case for a vertical shuttle bed Technical Field

[0001] The invention relates to the technical field of sewing, in particular to a combined embedded bobbin case of a vertical shuttle bed. Background Art

[0002] Existing vertical shuttle-bed sewing machines on the market are limited by the balance between shuttle bed size, sewing speed, and sewing quality. This results in a small bobbin thread capacity, requiring frequent machine stops to remove the bobbin case and replace the bobbin during sewing operations. Furthermore, the bobbin is enclosed within the bobbin case, making it difficult to effectively monitor the bobbin thread capacity. To address these issues, a vertical shuttle bed with a built-in bobbin case is needed. Summary of the Invention

[0003] The object of the present invention is to provide a combined embedded bobbin case for a vertical shuttle bed to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A vertical shuttle bed combined embedded bobbin case comprises an outwardly hollow bobbin case, a bobbin skin with a check valve for the outer end of the lower thread, a bobbin case spring, and a bobbin with a function for clamping the inner end of the lower thread. The bobbin case is embedded in the shuttle bed of the embedded combined bobbin case, and its opening is oriented in the same direction as the shuttle bed toward the outer end face.

[0006] As a preferred solution of the present invention, the outwardly hollow bobbin case shell is composed of an inner ring and a peripheral wall extending outward from the periphery of the inner ring, and the peripheral wall of the outwardly hollow bobbin case shell is provided with a thread inlet for the outer thread end of the bottom thread, a thread guide groove and a thread outlet hole for the outer thread end of the bottom thread, wherein the outer thread end of the bottom thread enters from the thread inlet of the bottom thread end and moves to the thread outlet hole along the guide of the thread guide groove, and a threaded hole is provided on the peripheral wall of the outwardly hollow bobbin case shell, and a hole position that is adapted to the position and size of the threaded hole is provided on the side wall of the shuttle skin, the shuttle skin outer thread end anti-return spring piece is placed in the card slot, and the hole position on the shuttle skin is aligned with the threaded hole of the bobbin case shell, and the two are connected and fixed using a threaded fastener.

[0007] As a preferred solution of the present invention, the lower thread end thread inlet is located at the lower left side of the bobbin case peripheral wall and the opening direction is from the outer end face to the inner end face. The wire guide groove starts from the lower thread end thread inlet, extends clockwise along the radial direction of the bobbin case peripheral wall at a certain angle toward the axial direction of the bobbin case peripheral wall inward to the lower thread end thread outlet hole and is located at the end where the wire guide groove screw rises.

[0008] As a preferred solution of the present invention, a narrow groove is provided at a transition position between the peripheral wall of the bobbin case and the inner ring of the bobbin case, wherein the bobbin case spring is installed in the narrow groove.

[0009] As a preferred solution of the present invention, a clamping groove is provided on the peripheral wall of the bobbin case and located at the thread inlet of the lower thread outer end, wherein the anti-return spring piece of the lower thread outer end of the bobbin skin is located in the clamping groove.

[0010] As a preferred embodiment of the present invention, the bobbin comprises a retaining ring and an inner shaft, wherein the inner shaft is provided with a bobbin thread end latch and a shuttle bed latch. After the bobbin case, shuttle skin, bobbin case spring, and bobbin are assembled and inserted into the shuttle bed, the shuttle bed latch on the bobbin applies a tight clamping force to the recessed end of the shuttle bed inner shaft, thereby clamping the shuttle bed inner shaft. The bobbin thread end latch on the bobbin applies a clamping force to the inner thread end of the bobbin-free thread core in the case, thereby securing the inner thread end of the bobbin.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In the present invention, the bobbin case is embedded in the shuttle bed of the embedded combined bobbin case, and the opening direction is in the same direction as the shuttle bed to the outer end surface, and the design of the interaction between the various components makes it possible to directly monitor the use status and remaining amount of the thread core from the opening surface during sewing, and according to sewing needs, the bobbin can be directly replaced from the end opening without removing the bobbin case, or only the bobbin-free thread core needs to be filled, and sewing can be resumed by buckling the inner and outer thread ends in the corresponding positions, making the device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a schematic diagram of the isometric structure of the present invention;

[0014] FIG2 is a schematic diagram of the explosion structure of FIG1 of the present invention;

[0015] FIG3 is a side view of the structure of FIG1 of the present invention;

[0016] FIG4 is a schematic diagram of the structure of the bobbin case of the present invention;

[0017] FIG5 is a schematic diagram of the peripheral wall structure of the bobbin case of the present invention;

[0018] FIG6 is a schematic diagram of the structure of the spool of the present invention.

[0019] In the figure: 1. shuttle bed; 2. bobbin case; 3. shuttle skin; 4. bobbin case spring; 5. bobbin; 6. bobbin; 201. thread inlet for the outer thread end of the lower thread; 202. thread guide groove; 203. thread outlet hole for the outer thread end of the lower thread; 204. threaded hole; 205. slot; 206. slot; 301. hole position; 302. anti-return spring for the outer thread end of the lower thread; 501. buckle for the inner thread end of the lower thread; 502. shuttle bed buckle. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] In the embodiment, please refer to Figures 1-6. The present invention provides a technical solution:

[0025] A combined embedded bobbin case of a vertical shuttle bed comprises an outwardly hollow bobbin case body 2, a bobbin skin 3 with a check function for the outer end of a lower thread, a bobbin case shrapnel 4, and a bobbin 5 with a function of clamping the inner end of a lower thread.

[0026] In this embodiment, referring to FIG3 , the bobbin case 2 is embedded in the shuttle bed 1 of the embedded combined bobbin case, and the opening direction is in the same direction as the shuttle bed 1 toward the outer end face. Different from the traditional external buckle bobbin case, the embedded bobbin case abandons the internal closed structure of the traditional external buckle bobbin case and designs a new open bobbin case structure. During sewing, the thread core usage status and the remaining amount can be directly monitored from the opening surface, and according to sewing needs, the bobbin can be replaced or the bobbin-free thread core 6 can be loaded directly from the end face opening without removing the bobbin case.

[0027] In this embodiment, referring to Figure 1, the outwardly hollow bobbin case 2 is composed of an inner ring and a peripheral wall extending outward from the periphery of the inner ring. The peripheral wall of the outwardly hollow bobbin case 2 is provided with a thread inlet 201 for the outer thread end of the bottom thread, a thread guide groove 202 and a thread outlet hole 203 for the outer thread end of the bottom thread. The outer thread end of the bottom thread enters from the thread inlet 201 and moves to the thread outlet hole 203 along the guide groove 202. A threaded hole 204 is provided on the peripheral wall of the outwardly hollow bobbin case 2, and a hole 301 with a design that is compatible with the position and size of the threaded hole 204 is provided on the side wall of the shuttle skin 3. The outer thread end return spring piece 302 of the shuttle skin 3 is placed in the card slot 205, and the hole 301 on the shuttle skin 3 is aligned with the threaded hole 204 of the bobbin case 2, and the two are connected and fixed using threaded fasteners.

[0028] In this embodiment, referring to Figures 2 and 3, the lower thread end thread inlet 201 is located at the lower left side of the peripheral wall of the bobbin case 2 and the opening direction is from the outer end face to the inner end face. The thread guide groove 202 starts from the lower thread end thread inlet 201, extends clockwise along the radial direction of the peripheral wall of the bobbin case 2 at a certain angle toward the axial direction of the peripheral wall of the bobbin case 2 to the lower thread end thread outlet hole 203 and is located at the end where the screw of the thread guide groove 202 is raised, thereby completing the installation of the lower thread.

[0029] In this embodiment, referring to Figures 1, 2 and 4, a narrow groove 206 is provided at the transition position between the peripheral wall of the bobbin case 2 and the inner ring of the bobbin case 2, wherein the bobbin case shrapnel 4 is installed at the narrow groove 206, thereby providing necessary damping for the rotation of the bobbin 5 during the pay-off process, thereby avoiding excessive pay-off due to sewing vibration and pay-off inertia.

[0030] In this embodiment, referring to Figures 1, 2 and 5, a clamping groove 205 is provided on the peripheral wall of the bobbin case 2 and at the bottom thread outer end thread inlet 201, wherein the bottom thread outer end anti-return spring piece 302 of the shuttle skin 3 is located in the clamping groove 205. When the bottom thread outer end enters the thread guide groove 202 from the bottom thread outer end thread inlet 201, it is constrained by the bottom thread outer end anti-return spring piece 302 on the shuttle skin 3 and cannot fall out of the bobbin case 2. Under the traction of the hook thread of the shuttle bed 1, the bottom thread outer end enters the thread outlet along the thread guide groove 202, causing the bottom thread outer end to exit from the bottom thread outer end thread outlet hole 203. Under the action of the elastic force of the shuttle skin 3, the thread exits from the thread outlet along the peripheral wall of the bobbin case 2. The shuttle skin 3 provides adjustable thread outlet damping for the bottom thread to achieve good sewing quality.

[0031] In this embodiment, referring to Figures 1, 2, 3, and 6, the bobbin 5 comprises a retaining ring and an inner shaft, wherein the inner shaft is provided with a bobbin thread inner end latch 501 and a shuttle bed latch 502. After the bobbin case 2, shuttle skin 3, bobbin case spring 4, and bobbin 5 are assembled in sequence and inserted into the shuttle bed 1, the shuttle bed latch 502 on the bobbin 5 exerts a tightening force against the recessed end of the inner shaft of the shuttle bed 1, thereby clamping the shuttle bed inner shaft and preventing the assembled embedded bobbin case from detaching from the shuttle bed 1. The bobbin thread inner end latch 501 on the bobbin 5 exerts a clamping force against the inner thread end of the bobbin-less thread core in the case 2, thereby preventing the incoming bobbin-less thread core from unraveling.

[0032] The working process of the present invention is as follows: when using a combined embedded bobbin case of a vertical shuttle bed, first, the outwardly hollow bobbin case 2 is composed of an inner ring and a peripheral wall extending outward from the periphery of the inner ring, and a bobbin case 2 is provided with a thread inlet 201 for the outer thread end of the lower thread, a thread guide groove 202 and a thread outlet hole 203 for the outer thread end of the lower thread, wherein the outer thread end of the lower thread enters from the thread inlet 201 and moves to the thread outlet hole 203 along the guide groove 202, a threaded hole 204 is provided on the peripheral wall of the outwardly hollow bobbin case 2, and a hole 301 that matches the position and size of the threaded hole 204 is provided on the side wall of the bobbin skin 3, and the outer thread end return spring piece 302 of the bobbin skin 3 is placed in the clamping groove 205, and the hole 301 on the bobbin skin 3 is aligned with the threaded hole 204 of the bobbin case 2, and the two are connected and fixed by a threaded fastener;

[0033] Afterwards, under the condition that the lower thread end outer thread inlet 201 is located at the lower left side of the peripheral wall of the bobbin case 2 and the opening direction is from the outer end face to the inner end face, the thread guide groove 202 starts from the lower thread end outer thread inlet 201, extends clockwise along the peripheral wall of the bobbin case 2 at a certain angle in the radial direction toward the axial direction of the peripheral wall of the bobbin case 2 to the lower thread end outer thread outlet hole 203 and is located at the end of the screw of the thread guide groove 202;

[0034] At the same time, a narrow groove 206 is provided at the transition position between the peripheral wall of the bobbin case 2 and the inner ring of the bobbin case 2, wherein the bobbin case spring piece 4 is installed at the narrow groove 206, thereby providing necessary damping for the rotation of the bobbin 5 during the thread-releasing process, thereby avoiding sewing vibration and thread-releasing inertia causing excessive thread-releasing;

[0035] Afterwards, a clamping groove 205 is provided on the peripheral wall of the bobbin case 2 and located at the bottom thread outer end thread inlet 201, wherein the bottom thread outer end non-return spring piece 302 of the shuttle skin 3 is located in the clamping groove 205. When the bottom thread outer end enters the thread guide groove 202 from the bottom thread outer end thread inlet 201, it is constrained by the bottom thread outer end non-return spring piece 302 on the shuttle skin 3 and cannot fall out of the bobbin case 2. Under the traction of the shuttle bed 1, the bottom thread outer end enters the thread outlet along the thread guide groove 202, causing the bottom thread outer end to exit from the bottom thread outer end thread outlet hole 203. Under the action of the elastic force of the shuttle skin 3, the thread exits from the thread outlet along the peripheral wall of the bobbin case 2. The shuttle skin 3 provides adjustable thread outlet damping for the bottom thread to achieve good sewing quality.

[0036] After that, the bobbin 5 is composed of a retaining ring and an inner shaft, wherein the inner shaft is designed with a bottom thread inner end buckle 501 and a shuttle bed buckle 502. After the bobbin case 2, shuttle skin 3, bobbin case spring piece 4, and bobbin 5 are assembled in sequence and the whole is embedded in the shuttle bed 1, the shuttle bed buckle 502 on the bobbin 5 will provide a tight clamping force to the recess at the end of the inner shaft of the shuttle bed 1 after being embedded in the shuttle bed 1, so that the assembled embedded bobbin case cannot be separated from the shuttle bed 1 by itself. The bottom thread inner end buckle 501 on the bobbin 5 provides a clamping constraint force to clamp the inner thread end of the bobbin-free thread core in the case 2, so that the replaced bobbin-free thread core will not fall apart.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A combined embedded bobbin case for a vertical shuttle bed, comprising a bobbin case body (2) which is hollow outward, a bobbin skin (3) with a check function for the outer end of the lower thread, a bobbin case shrapnel (4), and a bobbin (5) with a function of clamping the inner end of the lower thread; The bobbin case (2) is embedded in the shuttle bed (1), and the opening direction is in the same direction as the shuttle bed (1) toward the outer end surface.

2. The combined embedded bobbin case of a vertical shuttle loom according to claim 1, characterized in that: The outwardly hollow bobbin case (2) is composed of an inner ring and a peripheral wall extending outward from the periphery of the inner ring. The peripheral wall of the outwardly hollow bobbin case (2) is provided with a thread inlet (201) for the outer thread end of the bottom thread, a thread guide groove (202) and a thread outlet hole (203) for the outer thread end of the bottom thread, wherein the outer thread end of the bottom thread enters from the thread inlet (201) and moves to the thread outlet hole (203) along the guide groove (202). A threaded hole (204) is provided on the peripheral wall of the outwardly hollow bobbin case (2), and a hole position (301) adapted to the position and size of the threaded hole (204) is provided on the side wall of the bobbin skin (3). The method for detachably assembling the shuttle skin (3) and the shuttle shell (2) is as follows: The outer thread end return spring (302) of the bottom line of the shuttle skin (3) is placed in the card slot (205), and the hole position (301) on the shuttle skin (3) is aligned with the threaded hole (204) of the bobbin case (2), and the two are connected and fixed using a threaded fastener.

3. The combined embedded bobbin case of a vertical shuttle loom according to claim 1, characterized in that: The bottom thread outer end thread inlet (201) is located at the lower left side of the peripheral wall of the bobbin case (2) and the opening direction is from the outer end face to the inner end face. The thread guide groove (202) starts from the bottom thread outer end thread inlet (201) and extends clockwise at a certain angle along the radial direction of the peripheral wall of the bobbin case (2) toward the axial direction of the peripheral wall of the bobbin case (2) to the bottom thread outer end thread outlet hole (203) and is located at the end of the screw rise of the thread guide groove (202).

4. The combined embedded bobbin case of a vertical shuttle loom according to claim 1, characterized in that: A narrow slot (206) is provided at a transition position between the peripheral wall of the bobbin case (2) and the inner ring of the bobbin case (2), wherein the bobbin case shrapnel (4) is mounted at the narrow slot (206).

5. The combined embedded bobbin case of a vertical shuttle loom according to claim 1, characterized in that: A clamping groove (205) is provided on the peripheral wall of the bobbin case (2) and located at the bottom thread outer end thread inlet (201), wherein the bottom thread outer end anti-return spring piece (302) of the bobbin skin (3) is located in the clamping groove (205).

6. The combined embedded bobbin case of a vertical shuttle loom according to claim 1, characterized in that: The bobbin (5) is composed of a retaining ring and an inner shaft, wherein the inner shaft is designed with a bottom thread inner end buckle (501) and a shuttle bed buckle (502). After the bobbin case (2), the shuttle skin (3), the bobbin case shrapnel (4), and the bobbin (5) are assembled in sequence and the whole is embedded in the shuttle bed (1), the shuttle bed buckle (502) on the bobbin (5) provides a tight clamping force to the concave end of the inner shaft of the shuttle bed (1) after being embedded in the shuttle bed (1). The bottom thread inner end buckle (501) on the bobbin (5) provides a clamping and restraining force to the inner thread end of the bobbin thread core of the housing (2) to clamp the bottom thread inner end.

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