Boss structure for flat seaming machine

Abstract

The utility model relates to a boss structure for a flat seaming machine, which belongs to the technical field of flat seaming machines, and comprises a rack, the rack comprises an upper frame body and a lower seat body which are connected with each other, a needle chuck is arranged at the left end part of the upper frame body, at least one machine needle is clamped at the lower end part of the needle chuck, a boss is arranged at the left end part of the lower seat body, and at least one machine needle is clamped at the lower end part of the boss. The boss is located below the machine needle, the upper end face of the boss is provided with a needle plate, and the needle plate is provided with a movable groove allowing the feed dog to move front and back and a working hole allowing the machine needle to penetrate through up and down. A lengthened feed dog frame connected with the main shaft, a lengthened curved needle frame connected with the curved needle shaft and a lengthened needle protection frame connected with the needle protection shaft are arranged in the lower seat body, and the lengthened feed dog frame, the lengthened curved needle frame and the lengthened needle protection frame are all located in the boss and used in cooperation with the needle plate and the machine needle. The utility model aims to provide the boss structure for the flat seaming machine, which is reasonable and simple in structure and is convenient for an operator to move cloth or clothes.

Description

Technical Field

[0001] The utility model belongs to the technical field of interlock sewing machines, in particular to a boss structure used for interlock sewing machines. Background Art

[0002] The interlock sewing machine is also called a special sewing machine. It sews chain stitches, which are mostly used for collar rolling, hemming, ruffles, interlock seams, splicing seams and trims. The interlock sewing machine on the market has a small operating space between the upper frame and the lower seat. When sewing hard products such as shoes, car mats and bags, it is not easy to operate because these products are relatively hard. It is troublesome for operators to use and they cannot exert their strength. Utility Model Content

[0003] The utility model aims to provide a boss structure for a flat sewing machine which has a reasonable and simple structure and is convenient for operators to move cloth or clothes.

[0004] The purpose of the utility model is achieved in this way:

[0005] A boss structure for a flat sewing machine comprises a frame, the frame comprises an upper frame body and a lower seat body connected to each other, the left end portion of the upper frame body is provided with a needle clamp, the lower end portion of the needle clamp clamps at least one machine needle, the left end portion of the lower seat body is provided with a boss, the boss is located below the machine needle, and the upper end surface of the boss is provided with a needle plate, the needle plate is provided with a movable groove for the feed dog to move back and forth and a working hole for the machine needle to pass through up and down, and the lower seat body is respectively provided with an extended feed dog frame connected to the main shaft, an extended curved needle frame connected to the curved needle shaft, and an extended needle guard frame connected to the needle guard shaft, the extended feed dog frame, the extended curved needle frame and the extended needle guard frame are all located in the boss, and are used in conjunction with the needle plate and the machine needle.

[0006] In the above-mentioned boss structure for the interlock sewing machine, the lower seat body is provided with a through slot for the movement of the extended feed tooth frame, the extended bending needle frame and the extended needle guard frame, and the boss is located above the through slot.

[0007] In the above-mentioned boss structure for the interlock sewing machine, the lower end surface of the boss is provided with a plurality of connection holes 1, and the lower seat body is provided with connection holes 2 used in conjunction with the connection holes 1.

[0008] In the above-mentioned boss structure for the interlock sewing machine, a stopper is arranged on the boss, and the stopper is located on the right side of the extended feed tooth frame.

[0009] In the above-mentioned boss structure for the interlock sewing machine, a stopper is arranged on the side wall of the through groove, and the stopper is located on the right side of the extended feed tooth frame.

[0010] In the above-mentioned boss structure for the interlock sewing machine, a push plate is slidably arranged on the upper end surface of the boss, the push plate is arranged close to the needle plate, and a slide groove for the push plate to move back and forth is arranged on the boss.

[0011] In the above-mentioned boss structure for the interlock sewing machine, the boss and the front side of the lower seat body have openings, and the lower end of the lower seat body is rotatably provided with a baffle for covering the boss and the front side opening of the lower seat body.

[0012] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0013] The utility model increases the length of the needle guard frame, the needle bending frame and the cloth feed tooth frame by adding a boss on the lower seat body. The lengthened needle guard frame, the needle bending frame and the cloth feed tooth frame can be used in conjunction with the machine needle and the boss. With the presence of the boss, the operating space between the upper frame and the lower seat body of the interlock sewing machine can be increased to a certain extent, which makes it convenient for the operator to move cloth or clothing or to make the stitches turn during sewing, and the operator can exert more strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a simplified structural diagram of the first embodiment of the present utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the first embodiment of the utility model.

[0016] Figure 3 It is a simplified structural diagram of the lower seat body and the protrusion in the first embodiment of the utility model.

[0017] Figure 4 It is a schematic diagram of the internal structure of the second embodiment of the present utility model.

[0018] 1-frame; 2-push plate; 3-baffle; 11-upper frame; 12-lower seat; 13-extended feed tooth frame; 14-extended curved needle frame; 15-extended needle guard frame; 111-needle chuck; 112-needle; 121-boss; 122-needle plate; 123-working hole; 126-block. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to specific embodiments of the invention:

[0020] Embodiment 1, as Figure 1-Figure 3As shown: A boss structure for a flat sewing machine, comprising a frame 1, the frame 1 comprising an upper frame body 11 and a lower seat body 12 connected to each other, a needle clamp 111 is arranged at the left end of the upper frame body 11, and at least one machine needle 112 is clamped at the lower end of the needle clamp 111, a boss 121 is arranged at the left end of the lower seat body 12, the boss 121 is located below the machine needle 112, and a needle plate 122 is arranged on the upper end surface of the boss 121, and a movable groove for the feed dog to move forward and backward and a working hole 123 for the machine needle 112 to move up and down are arranged on the needle plate 122, and an extended feed dog frame 13 connected to the main shaft and a working hole 123 are respectively arranged in the lower seat body 12. The extended bending needle frame 14 connected to the bending needle shaft and the extended needle guard frame 15 connected to the needle guard shaft, the extended feed tooth frame 13, the extended bending needle frame 14 and the extended needle guard frame 15 are all located in the boss 121, and are used in conjunction with the needle plate 122 and the machine needle 112. Specifically, there are two extended feed tooth frames, both of which are arranged under the boss, and the two extended feed tooth frames are provided with feed teeth, which are used in conjunction with the movable groove; at the same time, the utility model increases the operating space between the upper frame and the lower seat of the interlock sewing machine by adding a boss to the lower seat, which makes it convenient for the operator to move cloth or clothes or to facilitate the turning of stitches during sewing, and the operator can use more strength.

[0021] In the above-mentioned boss structure for the interlock sewing machine, the lower seat body 12 is provided with a through groove for the movement of the extended feed tooth frame 13, the extended bending needle frame 14 and the extended needle guard frame 15, and the boss 121 is located above the through groove. Specifically, this is to facilitate the operation of the extended feed tooth frame 13, the extended bending needle frame 14 and the extended needle guard frame 15 and avoid interference with the lower seat body and the boss.

[0022] In the above-mentioned boss structure for the interlock sewing machine, the lower end surface of the boss 121 is provided with a plurality of connecting holes 1, and the lower seat body 12 is provided with connecting holes 2 used in conjunction with the connecting holes 1. Specifically, there are four connecting holes 1 and four connecting holes 2. When the two are connected, the bolts pass through the connecting holes 2 and 1 in sequence from upward to connect the boss and the lower seat body together.

[0023] In the above-mentioned boss structure for the interlock sewing machine, a stopper 126 is provided on the boss 121, and the stopper 126 is located on the right side of the extended feed tooth frame 13, specifically, in order to ensure the position of the extended feed tooth frame.

[0024] In the above-mentioned boss structure for the interlock sewing machine, a push plate 2 is slidably provided on the upper end surface of the boss 121, the push plate 2 is arranged close to the needle plate 122, and a slide groove for the push plate 2 to move back and forth is arranged on the boss 121, the boss 121 and the front side of the lower seat body 12 have an opening, and the lower end of the lower seat body 12 is rotatably provided with a baffle 3 for covering the opening of the front side of the boss 121 and the lower seat body 12. Specifically, this is to facilitate later disassembly and maintenance. The baffle is two interconnected baffles, baffle one covers the opening of the lower seat body, and baffle two covers the boss opening.

[0025] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that Figure 4 As shown: a stopper 126 is provided on the side wall of the through groove, and the stopper 126 is located on the right side of the extended cloth feeding tooth frame 13. Specifically, this is to ensure the position of the extended cloth feeding tooth frame.

[0026] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A boss structure for a flat sewing machine, comprising a frame (1), the frame (1) comprising an upper frame body (11) and a lower seat body (12) connected to each other, a needle clamp (111) being arranged at the left end of the upper frame body (11), and at least one machine needle (112) being clamped at the lower end of the needle clamp (111), characterized in that: The left end of the lower seat body (12) is provided with a boss (121), the boss (121) is located below the machine needle (112), and the upper end surface of the boss (121) is provided with a needle plate (122), the needle plate (122) is provided with a movable groove for the feed tooth to move forward and backward and a working hole (123) for the machine needle (112) to pass through up and down, and the lower seat body (12) is respectively provided with an extended feed tooth frame (13) connected to the main shaft, an extended curved needle frame (14) connected to the curved needle shaft, and an extended needle guard frame (15) connected to the needle guard shaft, and the extended feed tooth frame (13), the extended curved needle frame (14) and the extended needle guard frame (15) are all located in the boss (121) and are used in conjunction with the needle plate (122) and the machine needle (112).

2. The boss structure for a flat seam sewing machine according to claim 1, characterized in that: The lower seat body (12) is provided with a through slot for the movement of the extended cloth feeding tooth frame (13), the extended curved needle frame (14) and the extended needle guard frame (15), and the boss (121) is located above the through slot.

3. The boss structure for a flat seam sewing machine according to claim 1 or 2, characterized in that: The lower end surface of the boss (121) is provided with a plurality of first connection holes, and the lower seat body (12) is provided with second connection holes used in conjunction with the first connection holes.

4. The boss structure for a flat seam sewing machine according to claim 3, characterized in that: The boss (121) is provided with a stopper (126), and the stopper (126) is located on the right side of the extended cloth feeding tooth frame (13).

5. The boss structure for a flat seam sewing machine according to claim 2, characterized in that: A stopper (126) is provided on the side wall of the through slot, and the stopper (126) is located on the right side of the extended cloth feeding tooth frame (13).

6. The boss structure for a flat seam sewing machine according to claim 1, 2, 4 or 5, characterized in that: A push plate (2) is slidably arranged on the upper end surface of the boss (121); the push plate (2) is arranged close to the needle plate (122); and a sliding groove for the push plate (2) to move back and forth is arranged on the boss (121).

7. The boss structure for a flat seam sewing machine according to claim 6, characterized in that: The boss (121) and the front side of the lower seat body (12) have openings, and a baffle (3) for covering the boss (121) and the front side opening of the lower seat body (12) is rotatably provided at the lower end of the lower seat body (12).

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