Cutter head structure of multi-needle machine

Abstract

The utility model provides a cutter head structure of a multi-needle machine, and belongs to the technical field of multi-needle machine equipment. Which comprises a fixed seat with a cutter feeding groove, a fixed cutter module is fixedly mounted on the fixed seat, and is characterized in that a movable cutter seat capable of being driven by a driving part to be close to or far away from the cutter feeding groove is slidably arranged on the fixed seat, a movable cutter frame is connected to the movable cutter seat through a fastener, a movable cutter is detachably mounted on the movable cutter frame, and the fixed cutter module is fixedly mounted on the fixed seat. The movable cutter is arranged in the sliding direction of the movable cutter holder and partially extends into the cutter feeding groove. According to the cutter head, the moving cutter holder connected to the driving part is prevented from being detached, the moving cutter holder is detached to integrally detach and replace the moving cutter, maintenance personnel can more easily maintain and repair the cutter head, the driving part does not need to be adjusted, stroke setting of the driving part is not affected, operation steps in the maintenance process are reduced, and the maintenance efficiency is improved. And the convenience of assembly, disassembly, repair and maintenance of the cutterhead is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi-needle machine equipment and relates to a cutter disc structure of a multi-needle machine. Background Art

[0002] The multi-needle sewing machine is an industrial-grade sewing machine used for sewing. It can sew multiple threads at the same time to improve production efficiency. It is used to produce large quantities of clothing, shoes, bags and other products. Multi-needle machines are equipped with a cutter disc structure for thread cutting. Among them, the movable knife and the fixed knife are two important components in the cutter disc structure of the multi-needle machine. They work together to complete the thread cutting operation. When the thread cutting mechanism is triggered, the movable knife group starts to move. The movable knife on the movable knife holder contacts the fixed knife on the base plate to form a cutting area. The thread ends are cut off in the cutting area by the sharp edge of the blade. Once the cutting is completed, the movable knife group returns to its initial position to prepare for the next thread cutting operation.

[0003] For example, the Chinese patent application number 201821424351.5 discloses an automatic thread trimming mechanism for a multi-needle machine, including a seat plate, a moving knife group, a fixed knife group and a cylinder, wherein a sliding groove is formed on the moving knife group, a moving knife group is arranged in the sliding groove, the moving knife group includes a moving knife, a moving knife holder and a dust removal spring, the moving knife is fixed on the moving knife holder, and the moving knife group is connected to a cylinder capable of driving the moving knife holder to reciprocate. In the above scheme, the moving knife group is directly connected to the cylinder, so that when replacing or repairing the moving knife group, the moving knife group needs to be disconnected from the cylinder, which is easy to affect the stroke of the cylinder, so that the stroke of the moving knife group changes when trimming the thread, and the stroke of the cylinder needs to be readjusted later, which increases the complexity of maintenance. Secondly, when this scheme avoids dismantling the moving knife holder, when the moving knife model needs to be changed, these moving knives need to be dismantled and replaced one by one, which is not convenient for disassembly. Therefore, the above scheme is relatively inconvenient for loading and unloading, repairing and maintaining the thread trimming structure as a whole. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems in the existing technology and propose a knife disc structure for a multi-needle machine. The technical problem to be solved by the utility model is: how to improve the convenience of loading and unloading, repairing and maintaining the knife disc.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A knife disc structure for a multi-needle machine comprises a fixed seat with a knife feed groove, on which a fixed knife module is fixedly mounted, and is characterized in that a movable knife seat which can be driven by a driving member to approach or move away from the knife feed groove is slidably arranged on the fixed seat, a movable knife holder is connected to the movable knife seat via a fastener, a movable knife holder is detachably mounted on the movable knife holder, and the movable knife is arranged along the sliding direction of the movable knife seat and partially extends into the knife feed groove.

[0007] In the initial state, the movable knife seat on the fixed seat is in a position away from the feed slot. When the cutting operation is required, the driving member drives the movable knife seat to push toward the feed slot. The movable knife seat slides along the fixed seat, driving the movable knife holder and the movable knife detachably connected to the movable knife holder to follow the movement so that the movable knife goes deep into the feed slot. The movable knife cooperates with the fixed knife module on the fixed seat to form a cutting area and the thread is accurately cut off by the sharp edge of the blade. After the cutting is completed, the driving member returns the movable knife seat to the initial position and prepares for the next cutting operation. By adding a movable knife holder, the movable knife is installed on the movable knife holder instead of the movable knife seat, which can avoid the removal of the movable knife seat connected to the driving member. By removing the movable knife holder, the movable knife is disassembled and replaced as a whole. The maintenance personnel can more easily perform maintenance and repair of the cutter disc, without adjusting the driving member, and will not affect the stroke setting of the driving member, reducing the operation steps in the maintenance process, improving the maintenance efficiency, and replacing the movable knife as a whole, making loading and unloading easier, saving time and labor costs. Improve the convenience of loading and unloading, repair and maintenance of the cutter disc.

[0008] In the above-mentioned knife disc structure of a multi-needle machine, the movable knife seat has a long strip-shaped fixed portion, which is arranged horizontally perpendicular to the moving direction of the movable knife seat, and a clearance groove is provided on the side of the fixed portion close to the feed groove. The movable knife holder is long and is arranged at the bottom of the fixed portion along the length direction of the fixed portion. There are several movable knives and they are arranged at intervals along the length direction of the movable knife holder. One end of several movable knives is a blade and is located in the feed groove, and the other end of several movable knives is located in the clearance groove and is fixed on the top of the movable knife holder by screws. The setting of the clearance groove not only makes room for the movable knife to make the structure more compact, but also facilitates the replacement of individual damaged movable knives.

[0009] In the above-mentioned knife disc structure of a multi-needle machine, a dust removal spring is provided between the movable knife holder and the movable knife. The provision of the dust removal spring can effectively remove impurities remaining on the movable knife and keep the movable knife clean.

[0010] In the above-mentioned knife disc structure of a multi-needle machine, both ends of the bottom of the fixed part are integrally formed with a long strip-shaped sliding part arranged along the sliding direction of the movable knife seat, and the bottom of the fixed seat has two slide grooves, which are arranged along the length direction of the sliding part and are located on both sides of the feed groove, and the two sliding parts are respectively slidably arranged in the two slide grooves. The cooperation of the slide groove and the sliding part provides good sliding performance, so that the movable knife seat can accurately slide along the length direction of the slide groove during operation, making the movement of the movable knife seat more controllable and stable, which helps to achieve high-precision cutting operations, while maintaining the compactness of the knife disc structure, and having higher work efficiency and reliability.

[0011] In the above-mentioned cutter disc structure of a multi-needle machine, the driving member is a cylinder and there are two of them. The two cylinders are fixed to the bottom of the fixed seat along the length direction of the sliding part. The ends of the piston rods of the two cylinders are fixed with guide blocks, and the two guide blocks are respectively plugged and fixed to the bottom of the two sliding parts. The cylinder as a driving member has low cost, easy control of stroke, high reliability, and the setting of the guide block improves the convenience of connecting the driving member and the sliding part, and the structure is simple and reliable.

[0012] In the above-mentioned cutter disc structure of a multi-needle machine, a long strip-shaped spring frame is fixed to the top of the fixing seat by screws, and the spring frame is located at the notch of the cutter feed slot and is parallel to the fixing part. The setting of the spring frame limits the position of the moving knife to prevent the moving knife from tilting and affecting the thread cutting effect.

[0013] In the above-mentioned knife disc structure of a multi-needle machine, the fixed knife module includes a fixed knife frame and a fixed knife, the fixed knife frame is in a long strip shape and is fixed to the bottom of the fixed seat by screws, and there are a plurality of fixed knives, and the plurality of fixed knives are fixed to the bottom of the fixed knife frame at intervals by screws, and the plurality of fixed knives correspond to the plurality of movable knives one by one. The fixed knife is fixed to the bottom of the fixed knife frame so that when the fixed knife is disassembled, the movable knife does not need to be disassembled, which improves the convenience of disassembling the fixed knife. The one-to-one corresponding fixed knife and movable knife can avoid the deviation of the cutting position or the uneven cutting quality to ensure the accuracy and precision of the cutting.

[0014] In the above-mentioned cutter disc structure of a multi-needle machine, the fixed cutter holder has an upwardly protruding positioning edge on the side away from the cutter feed slot, and the positioning edge abuts against the side wall of the fixed seat. The setting of the positioning edge can more conveniently position and install the fixed cutter holder, and can also facilitate the initial position positioning of the movable cutter holder to facilitate the initial setting of the driving member and prevent the movable cutter holder from sliding out of the slide slot to affect the thread cutting effect of the cutter disc.

[0015] Compared with the prior art, the advantages of the utility model are: by adding a moving knife holder, the moving knife is installed on the moving knife holder instead of the moving knife seat, so that the moving knife seat connected to the driving member can be avoided from being dismantled, and the moving knife can be disassembled and replaced as a whole by removing the moving knife holder, so that maintenance personnel can more easily maintain and repair the cutter disc, and there is no need to adjust the driving member, which will not affect the stroke setting of the driving member, and the operation steps in the maintenance process are reduced, and the maintenance efficiency is improved. The moving knife can be replaced as a whole, making loading and unloading easier, saving time and labor costs. The convenience of loading and unloading, repair and maintenance of the cutter disc is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 yes Figure 1 Another perspective structural diagram of .

[0018] Figure 3 It is a partial structural exploded view of the utility model.

[0019] Figure 4 yes Figure 2 Medium AA cross-section view.

[0020] Figure 5 yes Figure 2 Cross-sectional view from the middle BB perspective.

[0021] In the figure, 1, fixed seat; 11, feed groove; 12, slide groove; 2, fixed knife module; 21, fixed knife holder; 211, positioning edge; 22, fixed knife; 3, moving knife holder; 4, moving knife seat; 411, fixed part; 411a, give way groove; 412, sliding part; 42, moving knife; 421, blade part; 43, dust removal spring; 5, driving part; 6, guide block; 7, spring holder; 8, fastener. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to the following embodiments.

[0023] like Figure 1-5 As shown, a knife disc structure of a multi-needle machine includes a fixed seat 1 with a knife feed groove 11, a fixed knife module 2 is fixedly installed on the fixed seat 1, a movable knife seat 41 that can be driven by a driving member 5 to approach or move away from the knife feed groove 11 is slidably arranged on the fixed seat 1, and the movable knife seat 41 has a long strip-shaped fixed portion 411 and a long strip-shaped sliding portion 412, the fixed portion 411 is horizontally arranged perpendicular to the moving direction of the movable knife seat 41, and is arranged along the sliding direction of the movable knife seat 41 and is integrally formed at both ends of the bottom of the fixed portion 411, and the bottom of the fixed seat 1 has two sliding grooves 12 The two slide grooves 12 are arranged along the length direction of the sliding part 412 and are located on both sides of the feed groove 11. The two sliding parts 412 are respectively slidably arranged in the two slide grooves 12. The driving member 5 is a cylinder and there are two of them. The two cylinders are fixed to the bottom of the fixed seat 1 along the length direction of the sliding part 412. The ends of the piston rods of the two cylinders are fixed with guide blocks 6. The two guide blocks 6 are respectively plugged and fixed at the bottom of the two sliding parts 412. The stroke is easy to control and the reliability is high. The setting of the guide block 6 improves the convenience of connecting the driving member 5 and the sliding part 412, and the structure is simple and reliable.

[0024] The movable knife seat 41 is connected to the movable knife holder 3 through a fastener 8, and the movable knife 42 is detachably mounted on the movable knife holder 3. The movable knife 42 is arranged along the sliding direction of the movable knife seat 41 and partially extends into the feed groove 11. A clearance groove 411a is provided on the side of the fixed portion 411 close to the feed groove 11. The movable knife holder 3 is in the shape of a long strip and is arranged at the bottom of the fixed portion 411 along the length direction of the fixed portion 411. The movable knives 42 have a plurality of movable knives and are arranged at intervals along the length direction of the movable knife holder 3. One end of the plurality of movable knives 42 is a blade portion 421 and is located in the feed groove 11, and the other end of the plurality of movable knives 42 is located in the clearance groove 411. a and is positioned on the top of the movable knife holder 3 by screws. One side of the blade 421 in this embodiment is used for cutting the surface line, and the other side is used for cutting the bottom line. The middle part of the blade 421 has an anti-pinching hole to avoid the line clamping. A dust removal spring 43 is provided between the movable knife holder 3 and the movable knife 42 to effectively remove the impurities remaining on the movable knife 42 and keep the movable knife 42 clean. A long strip of spring frame 7 is fixed on the top of the fixed seat 1 by screws. The spring frame 7 is located at the notch of the knife feed slot 11 and is parallel to the fixed portion 41 to limit the position of the movable knife 42 to prevent the movable knife 42 from tilting and affecting the line cutting effect.

[0025] The fixed knife module 2 includes a fixed knife frame 21 and a fixed knife 22. The fixed knife frame 21 is in a long strip shape and is fixed to the bottom of the fixed seat 1 by screws. There are several fixed knives 22, and the several fixed knives 22 are fixed to the bottom of the fixed knife frame 21 by screws at intervals, so that when the fixed knife 22 is disassembled, there is no need to disassemble the movable knife 42, thereby improving the convenience of disassembling the fixed knife 22. The several fixed knives 22 correspond to the several movable knives 42 one by one. The side of the fixed knife frame 21 away from the knife feed groove 11 has an upwardly protruding positioning edge 211, and the positioning edge 211 abuts against the side wall of the fixed seat 1. The setting of the positioning edge 211 can, on the one hand, more conveniently position and install the fixed knife frame 21, and on the other hand, it can facilitate the positioning of the initial position of the movable knife seat 41 to facilitate the initial setting of the driving member 5 and to prevent the movable knife seat 41 from sliding out of the slide groove 12 to affect the thread cutting effect of the knife disc.

[0026] Before starting work, first install the moving knife seat 41 on the fixed seat 1, then select the appropriate model of the moving knife 42 and fix the moving knife holder 3 on the moving knife seat 41, and finally install the fixed knife module 2. The moving knife 42 can be installed in advance according to the model and the moving knife holder 3. When in use, directly install the moving knife holder 3 of the corresponding model of the moving knife 42. In the initial state, the moving knife seat 41 on the fixed seat 1 is in a position away from the feed groove 11. When the cutting operation is required, the cylinder drives the moving knife seat 41 to push toward the feed groove 11. The moving knife seat 41 slides along the fixed seat 1, driving the moving knife holder 3 and the moving knife 42 detachably connected to the moving knife holder 3 to follow and move so that the moving knife 42 penetrates into the feed groove. The moving knife 42 cooperates with the fixed knife module 2 on the fixed seat 1 to form a cutting area and the thread head is accurately cut off through the sharp edge of the blade. After the cutting is completed, the cylinder returns the moving knife seat 41 to the initial position, ready for the next cutting operation. When the movable knife 42 is dismantled as a whole for replacement, the fixed knife module 2 is first dismantled, and then the movable knife holder 3 is dismantled.

[0027] The utility model adds a movable knife holder 3 so that the movable knife 42 is installed on the movable knife holder 3 instead of the movable knife seat 41, so that the movable knife seat 41 connected to the driving member 5 can be avoided from being dismantled. The movable knife 42 can be dismantled and replaced as a whole by dismantling the movable knife holder 3. The maintenance personnel can more easily maintain and repair the cutter disc without adjusting the driving member 5, which will not affect the stroke setting of the driving member 5, reduce the operation steps in the maintenance process, improve the maintenance efficiency, replace the movable knife 42 as a whole, make loading and unloading easier, save time and labor costs, and improve the convenience of loading and unloading, repairing and maintaining the cutter disc.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A knife disc structure of a multi-needle machine, comprising a fixed seat (1) having a knife feed groove (11), a fixed knife module (2) being fixedly mounted on the fixed seat (1), characterized in that: A movable knife seat (41) is slidably arranged on the fixed seat (1) and can be driven by a driving member (5) to approach or move away from the knife feed groove (11); the movable knife seat (41) is connected to a movable knife holder (3) via a fastener (8); a movable knife (42) is detachably mounted on the movable knife holder (3); the movable knife (42) is arranged along the sliding direction of the movable knife seat (41) and partially extends into the knife feed groove (11).

2. The cutter disc structure of a multi-needle machine according to claim 1, characterized in that: The movable knife seat (41) has a long strip-shaped fixed portion (411), the fixed portion (411) is arranged horizontally perpendicular to the moving direction of the movable knife seat (41), a clearance groove (411a) is provided on one side of the fixed portion (411) close to the feed groove (11), the movable knife holder (3) is long strip-shaped and is arranged at the bottom of the fixed portion (411) along the length direction of the fixed portion (411), the movable knives (42) are provided and are arranged at intervals along the length direction of the movable knife holder (3), one end of the movable knives (42) is a blade portion (421) and is located in the feed groove (11), and the other end of the movable knives (42) is located in the clearance groove (411a) and is positioned at the top of the movable knife holder (3) by screws.

3. The cutter disc structure of a multi-needle machine according to claim 2, characterized in that: A dust removal spring (43) is provided between the movable knife holder (3) and the movable knife (42).

4. A cutter disc structure of a multi-needle machine according to claim 2 or 3, characterized in that: Both ends of the bottom of the fixed portion (411) are integrally formed with a long strip-shaped sliding portion (412) arranged along the sliding direction of the movable knife seat (41), and the bottom of the fixed seat (1) has two sliding grooves (12), the two sliding grooves (12) are arranged along the length direction of the sliding portion (412) and are located on both sides of the feed groove (11), and the two sliding portions (412) are respectively slidably arranged in the two sliding grooves (12).

5. The cutter disc structure of a multi-needle machine according to claim 4, characterized in that: The driving member (5) is a cylinder and there are two of them. The two cylinders are fixed to the bottom of the fixing seat (1) along the length direction of the sliding part (412). The ends of the piston rods of the two cylinders are fixed with guide blocks (6). The two guide blocks (6) are respectively plugged and fixed to the bottoms of the two sliding parts (412).

6. The cutter disc structure of a multi-needle machine according to claim 4, characterized in that: A strip-shaped spring clip frame (7) is fixed to the top of the fixing seat (1) by means of screws; the spring clip frame (7) is located at the notch of the tool feed slot (11) and is parallel to the fixing portion (411).

7. The cutter disc structure of a multi-needle machine according to claim 5, characterized in that: The fixed knife module (2) comprises a fixed knife frame (21) and a fixed knife (22); the fixed knife frame (21) is in the shape of a long strip and is fixed to the bottom of the fixed seat (1) by screws; there are a plurality of fixed knives (22); the plurality of fixed knives (22) are fixed to the bottom of the fixed knife frame (21) at intervals by screws, and the plurality of fixed knives (22) correspond one to one to the plurality of movable knives (42).

8. The cutter disc structure of a multi-needle machine according to claim 7, characterized in that: The fixed blade holder (21) has a positioning edge (211) protruding upward on one side away from the blade feed groove (11), and the positioning edge (211) abuts against the side wall of the fixing seat (1).

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