Safe reset device for curved needle frame of multi-needle machine and sewing equipment

Abstract

The utility model relates to a safe reset device of a curved needle frame of a multi-needle machine and sewing equipment, and the safe reset device of the curved needle frame of the multi-needle machine comprises a sewing table assembly installed on a machine shell of the multi-needle machine, and the sewing table assembly comprises a fixed sewing table and a front sewing table movably matched with the fixed sewing table; the curved needle frame is used for installing a curved needle and located in the machine shell, and the curved needle frame is provided with a first position in a working state and a second position which is turned outwards after the front sewing table is opened; the protection part is in linkage with the curved needle frame, and when the curved needle frame is located at the second position, the protection part interferes with resetting of the front sewing table. According to the technical scheme, through linkage of the protection part and the curved needle frame and mutual interference of the protection part and the front sewing table, it is ensured that before the curved needle frame is reset, the sewing equipment cannot be normally restored to the sewing state, so that production safety is guaranteed, and production efficiency is improved; and meanwhile, the device has the advantages of low operator training cost and easiness in popularization.

Description

Technical Field

[0001] The present application relates to the technical field of sewing equipment, and in particular to a safety reset device for a looper frame of a multi-needle machine and sewing equipment. Background Art

[0002] Sewing machines primarily use threads to join multiple layers of fabric together. With the continuous advancement of technology, a wide variety of sewing machine styles are now available on the market. Different sewing machine styles are suitable for sewing different fabrics, such as multi-needle flatbed sewing machines, which are used to sew multiple parallel seams, and multi-needle cylinder-type sewing machines.

[0003] When a multi-needle sewing machine requires threading or maintenance after use, the loopers must be adjusted to the maintenance position along with the looper holder. After maintenance or threading is complete, the looper holder must be manually reset before sewing can resume. However, in actual production, operators often forget to reset the looper holder and continue sewing. This can disrupt machine operation, causing damage and impacting production efficiency. Utility Model Content

[0004] The present application provides a safety reset device for a multi-needle machine looper frame, which prevents the sewing equipment from entering the sewing state when the looper frame is in the maintenance state, thereby ensuring production safety and improving production efficiency.

[0005] The present application provides a safety reset device for a looper frame of a multi-needle machine, comprising:

[0006] A sewing table assembly is installed on the housing of the multi-needle machine, and the sewing table assembly includes a fixed sewing table and a front sewing table movably matched with the fixed sewing table;

[0007] A looper frame, for mounting loopers and located in the housing, wherein the looper frame has a first position in a working state and a second position turned outward after the front sewing platform is opened;

[0008] The protective member is linked with the bending needle frame. When the bending needle frame is in the second position, the protective member interferes with the reset of the front sewing platform.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0010] In one embodiment, when the curved needle holder is in the second position, at least a portion of the protective member is higher than the front seam platform to prevent the front seam platform from resetting.

[0011] In one embodiment, the protective member is fixed to the bending needle frame or is transmission-connected to the bending needle frame.

[0012] In one embodiment, the protective member detects the current position of the looper frame and outputs an interference signal when the looper frame is in the second position to prompt or limit the front sewing platform to reset.

[0013] In one embodiment, the protective member is rod-shaped, one end of the protective member is swingably mounted on the looper frame, and the other end is a working end that interferes with the front sewing platform.

[0014] In one embodiment, the safety reset device further includes a guide seat, the protective member slides through the guide seat, and the guide seat is rotatably engaged with the housing to limit the movement path of the protective member.

[0015] In one embodiment, the housing is equipped with a support member, and the guide seat is rotatably sleeved on the support member.

[0016] In one embodiment, the guide seat includes:

[0017] an annular portion, sleeved on the support member;

[0018] The biasing portion protrudes radially outward relative to the annular portion, and is provided with a guide hole for the protective member to slide through.

[0019] In one embodiment, the support member is cylindrical and has an installation channel inside. The housing is further equipped with a needle feeding shaft, and one end of the needle feeding shaft is inserted into the installation channel.

[0020] The present application also provides a sewing device comprising the safety reset device described in the above technical solution.

[0021] The technical solution disclosed in this application ensures that the sewing equipment cannot return to the normal sewing state before the looper is reset by linking the protective element with the looper frame and interfering with the protective element with the front seam table, thereby ensuring production safety and improving production efficiency. The front seam table is a component that needs to be operated during the normal looper frame maintenance process. Therefore, the protective element arrangement in this application also has the advantages of low operator training costs and easy promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a structural diagram of a sewing device in one embodiment of the present application (the sewing machine on the housing is omitted);

[0024] Figure 2 This is a schematic structural diagram of a safety reset device for a looper frame of a multi-needle machine in one embodiment of the present application;

[0025] Figure 3 for Figure 2 Schematic diagram of the safety reset device of the multi-needle machine looper frame from a front view;

[0026] Figure 4 for Figure 3 AA cross-sectional structural diagram shown in FIG;

[0027] Figure 5 A schematic diagram of the structure of the safety reset device for the looper frame of a multi-needle machine from another perspective (the housing is omitted);

[0028] Figure 6 It is a schematic diagram of the protective part cooperating with the guide seat in different states.

[0029] The reference numerals of the components are as follows:

[0030] 100, housing;

[0031] 200, sewing platform assembly; 210, fixed sewing platform; 211, limit buckle; 220, front sewing platform; 221, sewing surface; 222, protective surface; 230, pivot;

[0032] 300, looper frame; 310, looper; 320, drive shaft; 330, pull rod;

[0033] 400, protective part; 410, linkage end; 420, working end;

[0034] 500, guide seat; 510, support member; 520, annular portion; 530, offset portion;

[0035] 600, needle feeding shaft; 610, needle feeding. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0037] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, when a first feature is “above” or “below” a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level (or in a state of use, or from a certain perspective of the drawing) than the second feature. When a first feature is “below”, “below” or “below” a second feature, it can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level (or in a state of use, or from a certain perspective of the drawing) than the second feature.

[0040] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0041] Reference Attachment Figure 1 To the attached Figure 4 As shown, the present application provides a safety reset device for a looper frame of a multi-needle machine, comprising a sewing table assembly 200, a looper frame 300 and a protective member 400.

[0042] The sewing platform assembly 200 is installed on the housing 100 of the multi-needle machine, and the sewing platform assembly 200 includes a fixed sewing platform 210 and a front sewing platform 220 that is movably matched with the fixed sewing platform 210. The front sewing platform 220 has a sewing position close to the fixed sewing platform 210 and a maintenance position of the open looper frame 300.

[0043] The looper frame 300 is used to install the looper 310 and is located in the housing 100. The looper frame 300 has a first position in the working state and a second position turned outward after the front sewing platform 220 is opened.

[0044] The protective member 400 is linked to the looper frame 300. When the looper frame 300 is in the second position, the protective member 400 interferes with the reset of the front sewing platform 220, that is, prevents the front sewing platform 220 from entering the sewing position.

[0045] The technical solution disclosed in this application ensures that the sewing equipment cannot return to the normal sewing state before the looper frame 300 is reset, through the linkage between the protective member 400 and the looper frame 300 and the interference between the protective member 400 and the front sewing platform 220, thereby ensuring production safety and improving production efficiency. The front sewing platform 220 is a component that needs to be operated during the normal maintenance process of the looper frame 300. Therefore, the provision of the protective member 400 in this application also has the advantages of low operator training costs and easy promotion.

[0046] For the specific configuration of the front seam platform 220, see the attached Figure 1 and attached Figure 2 As shown, the front seam platform 220 is rotatably engaged with the fixed seam platform 210 via a pivot 230. A limiting buckle 211 is provided on the side edge of the fixed seam platform 210 near the front seam platform 220, and a positioning piece (not shown) for engaging with the limiting buckle 211 is provided on the front seam platform 220. The positioning piece and the limiting buckle 211 cooperate with each other to limit the relative position of the front seam platform 220 and the fixed seam platform 210. The positioning piece is located at the end of the front seam platform 220 away from the pivot 230, and the pivot 230 and the positioning piece are respectively located on both sides of the looper frame 300. The front seam platform 220 includes a sewing surface 221 flush with the fixed seam platform 210 and a protective surface 222 perpendicular to the sewing surface 221. In one embodiment, the front seam platform 220 and the fixed seam platform 210 cooperate with each other and enclose and wrap the looper frame 300 to prevent the looper frame 300 and nearby components from being exposed to the outside world during the sewing process.

[0047] The mutual interference between the protective element 400 and the front seam platform 220 can be realized based on electrical control. For example, in one embodiment, the protective element 400 detects the current position of the bending needle frame 300, and outputs an interference signal when the bending needle frame 300 is in the second position to prompt or limit the front seam platform 220 to reset. In this embodiment, the protective element 400 can be a sensor for detecting the current position of the bending needle frame 300, and controlling other actuators to achieve interference with the front seam platform 220. The specific control process can be implemented in combination with existing technologies. Or refer to the attached Figure 2 To the attached Figure 6 As shown, the protective member 400 directly interacts with the front seam platform 220 in terms of mechanical structure. The protective member 400 is fixed to the looper frame 300 or is in driving connection with the looper frame 300. Figure 3 In the embodiment, when the looper frame 300 is in the first position under the working state, the protective member 400 avoids the front sewing platform 220 to realize the switching of the front sewing platform 220 between different positions. Correspondingly, when the looper frame 300 is in the second position, at least a portion of the protective member 400 is higher than the front sewing platform 220 to prevent the front sewing platform 220 from resetting. Figure 6 The portion where the protective member 400 interacts with the front seam platform 220 is away from the pivot 230 to provide a greater interference moment and improve stability.

[0048] For the specific structure of the protective member 400, refer to the attached Figure 5 and attached Figure 6 In the illustrated embodiment, the protective member 400 is rod-shaped. One end of the protective member 400 is a linkage end 410 that is swingably mounted to the looper frame 300, and the other end is a working end 420 that interferes with the front sewing platform 220. In this embodiment, the looper frame 300 is provided with a drive shaft 320 that moves with the looper frame, and the linkage end 410 is hingedly connected to the drive shaft 320. In other embodiments, the looper frame 300 can also be linked to the protective member 400 via a multi-stage transmission mechanism. When the looper frame 300 moves relative to the housing 100, the drive shaft 320 drives the linkage end 410 to move, thereby achieving linkage with the protective member 400.

[0049] In order to improve the accuracy of the action of the protective member 400, refer to the attached Figure 5 and attached Figure 6 In the illustrated embodiment, the safety reset device further includes a guide seat 500, through which the protective member 400 slides. The guide seat 500 rotatably engages with the housing 100 to limit the movement path of the protective member 400. The guide seat 500 is provided with a guide hole that matches the outer shape of the protective member 400. Furthermore, the working ends 420 are evenly spaced along the extension direction and have a smaller radial dimension than the linkage ends 410. Specifically, the radial dimension of the linkage ends 410 is larger than the radial dimension of the guide holes. The guide holes extend toward the front seam platform 220.

[0050] Regarding the details of the guide base 500, the housing 100 is mounted with a support member 510, and the guide base 500 is rotatably sleeved on the support member 510. Further, the guide base 500 includes:

[0051] The annular portion 520 is sleeved on the support member 510;

[0052] The biasing portion 530 protrudes radially outward relative to the annular portion 520 , and defines a guide hole for the protective member 400 to slide through.

[0053] The guide seat 500 can be adaptively rotated relative to its own mounting components (such as the support member 510) to release the movement range of the protective member 400. The support member 510 can be provided separately or shared with other components to improve the integration of components. Figure 5 and attached Figure 6 In the embodiment shown, the support member 510 is cylindrical and has an internal mounting channel. The housing 100 is also mounted with a needle feeding shaft 600, and one end of the needle feeding shaft 600 is inserted into the mounting channel. A needle feeding shaft 600 is mounted with a needle feeding shaft 610. At least one end of the needle feeding shaft 600 is an assembly end that fits into the housing 100, and the support member 510 is positioned adjacent to the assembly end. Figure 4 In the illustrated embodiment, the support member 510 and the housing 100 clamp the guide base 500 to improve the installation strength of the guide base 500 , thereby improving the working stability of the protective member 400 .

[0054] The looper frame 300 can be driven by a push-pull mechanism. The looper frame 300 can be switched to different positions by moving the pull rod 330. The movement of the looper frame 300 is synchronized with the linkage end 410 of the guard 400 via the drive shaft 320, thereby driving the working end 420 of the guard 400 to move relative to the guide seat 500.

[0055] The maintenance process of the bent needle is as follows:

[0056] Operate the positioning piece and / or the limiting buckle 211 to release the mutual locking between the front sewing platform 220 and the fixed sewing platform 210, and drive the front sewing platform 220 to move relative to the fixed sewing platform 210 to open the looper frame 300;

[0057] Pull out the pull rod 330, and the looper frame 300 pops out. As the looper frame 300 pops out, the protective member 400 is ejected. After the ejection, the top height of the working end 420 of the protective member 400 exceeds the height of the front seam platform 220, that is, it is located on the closing path of the front seam platform 220.

[0058] When threading or maintenance is completed, if the looper frame 300 is not reset, closing the front seam platform 220 will be blocked by the working end 420 of the protective member 400, and the front seam platform 220 cannot be completely closed; at this time, it is necessary to reset the looper frame 300 to drive the protective member 400 to retract to avoid the front seam platform 220, thereby achieving safe reset.

[0059] The safety reset device for the bending needle frame of a multi-needle machine in this application solves the risk of damaging the bending needles when the front sewing table 220 is opened for threading or maintenance, and the machine is directly operated by forgetting to reset the bending needle frame 300. It has the advantages of simple structure, low training cost, good economy, safety and stability.

[0060] In conjunction with the above, the present application further provides a sewing device, including the safety reset device for the multi-needle machine looper frame in the above technical solution. The safety reset device for the multi-needle machine looper frame is described above, and the other parts of the sewing device can be implemented in combination with existing technologies and will not be described in detail here.

[0061] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no contradiction exists between these combinations of technical features, they should be considered to be within the scope of this specification. When technical features in different embodiments are embodied in the same drawing, it can be deemed that the drawing also discloses examples of combinations of the various embodiments involved.

[0062] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. The safety reset device of the multi-needle machine looper frame is characterized by: include: A sewing table assembly is installed on the housing of the multi-needle machine, and the sewing table assembly includes a fixed sewing table and a front sewing table movably matched with the fixed sewing table; A looper frame, for mounting loopers and located in the housing, wherein the looper frame has a first position in a working state and a second position turned outward after the front sewing platform is opened; The protective member is linked with the bending needle frame. When the bending needle frame is in the second position, the protective member interferes with the reset of the front sewing platform.

2. The safety reset device for the looper frame of a multi-needle machine according to claim 1, characterized in that: When the curved needle holder is in the second position, at least a portion of the protective member is higher than the front seam platform to prevent the front seam platform from resetting.

3. The safety reset device for the looper frame of a multi-needle machine according to claim 1, characterized in that: The protective element is fixed to the looper frame or is transmission-connected to the looper frame.

4. The safety reset device for the looper frame of a multi-needle machine according to claim 1, characterized in that: The protective member detects the current position of the looper frame and outputs an interference signal when the looper frame is in the second position to prompt or limit the front sewing platform to reset.

5. The safety reset device for the looper frame of a multi-needle machine according to claim 1, characterized in that: The protective member is in the shape of a rod, one end of which is swingably mounted on the curved needle frame, and the other end of which is a working end interfering with the front sewing platform.

6. The safety reset device for the looper frame of a multi-needle machine according to claim 1, characterized in that: The safety reset device further includes a guide seat, the protective member slides through the guide seat, and the guide seat is rotatably matched with the housing to limit the movement path of the protective member.

7. The safety reset device for the looper frame of a multi-needle machine according to claim 6, characterized in that: The housing is provided with a support member, and the guide seat is rotatably sleeved on the support member.

8. The safety reset device for the looper frame of a multi-needle machine according to claim 7, characterized in that: The guide seat comprises: an annular portion, sleeved on the support member; The biasing portion protrudes radially outward relative to the annular portion, and is provided with a guide hole for the protective member to slide through.

9. The safety reset device for the looper frame of a multi-needle machine according to claim 7, characterized in that: The support member is cylindrical and has an installation channel inside. The housing is also equipped with a needle feeding shaft, and one end of the needle feeding shaft is passed through the installation channel.

10. Sewing equipment, characterized in that The invention comprises the safety reset device according to any one of claims 1 to 9.

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