Sewing machine with automatic stitch length adjusting function

Abstract

The utility model discloses a sewing machine with an automatic stitch length adjusting function, which relates to the technical field of thin cotton quilts and comprises a table board, a sewing main body structure is arranged at the upper end of the table board, a needle adjusting cam is arranged on the surface of the sewing main body structure, a connecting rod is sleeved on the surface of the sewing main body structure, and the needle adjusting cam is arranged on the connecting rod. A user controls the motor to operate through the second control button, the motor drives the adjusting screw rod to rotate, the adjusting screw sleeve moves upwards or downwards along the adjusting screw rod under the action of threads, and the needle adjusting structure is arranged at one end of the connecting rod. The adjusting screw sleeve drives the sliding sleeve to move along the surface of the guide rod through the sliding block, the sliding sleeve drives the sliding rail to move up and down, the sliding rail moves through the sliding block, the sliding block drives the connecting rod to move up and down, the rotating angle of the frame shaft can be adjusted conveniently, the cloth feeding distance of the cloth feeding teeth is adjusted, and the purpose of adjusting the needle pitch is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewing machine technical field, especially a kind of sewing machine with automatic needle spacing function. BACKGROUND

[0002] Sewing machine is a kind of machine that forms one or more stitches on the sewing material with one or more sewing threads, interweaves or sews one or more layers of sewing material together, and can sew cotton, hemp, silk, wool, synthetic fiber and other fabrics, and leather, plastic and paper products, and the formed stitches are neat, beautiful, flat and firm, and the sewing speed is fast and easy to use. It is widely used in clothing, home furnishing, automotive interior, aerospace and other fields;

[0003] The existing sewing machine is inconvenient to adjust during use, and can only be adjusted at multiple gears, so the fine effect is poor, and it is inconvenient to use. Moreover, the needle spacing wrench is easy to deviate due to the operation of the structure during use, affecting the use effect.

[0004] Therefore, the existing sewing machine with automatic needle spacing function cannot meet the needs in actual use, so there is an urgent need for improved technology on the market to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of sewing machine with automatic needle spacing function to solve the problems raised in the background art.

[0006] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0007] The utility model is a kind of sewing machine with automatic needle spacing function, including table board, the upper end of table board is provided with sewing main body structure, the surface of sewing main body structure is provided with needle adjusting cam, the surface of sewing main body structure is provided with connecting rod, one end of connecting rod is connected with frame shaft and moves in table board, the surface of frame shaft is movably installed with cloth feeding frame, one side of cloth feeding frame is provided with cloth feeding tooth, one end of connecting rod is provided with needle adjusting structure.

[0008] Preferably, the side of the cloth feeding frame is fixedly installed with an electric lifting frame, the upper end of the electric lifting frame is fixedly connected with the lower end of the cloth feeding tooth, the side of the table board is provided with a first control button, and the first control button is electrically connected with the electric lifting frame.

[0009] Preferably, the needle adjusting structure includes a mounting groove, the mounting groove is opened on the surface of the table board, the connecting rod is movably inserted into the mounting groove, the side of the upper end of the table board is fixedly installed with a control box, and the control box is located on one side of the connecting rod.

[0010] Preferably, one side of the control box is movably provided with a sliding rail, an inner portion of the sliding rail is movably provided with a sliding block, one side of the sliding block is fixedly provided with a rotating block, and the rotating block is rotationally connected with a surface of the connecting rod.

[0011] Preferably, an inner portion of the control box is fixedly provided with a guide rod, an outer side of the guide rod is slidably provided with a sliding sleeve, and the sliding sleeve is connected with the sliding rail.

[0012] Preferably, an inner portion of the control box is rotationally provided with an adjusting screw rod, a surface of the adjusting screw rod is movably sleeved with an adjusting sleeve, the adjusting screw rod and the adjusting sleeve are located in the guide rod, the adjusting sleeve is connected with the sliding sleeve, an upper end of the control box is provided with a motor in transmission connection with the adjusting screw rod, both sides of the guide rod are provided with sliding grooves, the sliding grooves are penetrated through with sliding blocks, and both ends of the sliding blocks are fixedly connected with the sliding sleeve and the adjusting sleeve.

[0013] Preferably, a lower end of the adjusting sleeve is fixedly provided with a lifting rod, the lifting rod is movably inserted into a lower end of the table plate and is provided with a connecting plate, one side of the control box is provided with a scale box, one side of the scale box is movably inserted with a marking block, an inner portion of the scale box is movably provided with a scale block, the scale block is connected with the marking block, a lower end of the scale box is movably inserted with a scale rod connected with the connecting plate, and an upper end of the scale rod is connected with the scale block.

[0014] Preferably, one side of the table plate is provided with a second control button, and the second control button is electrically connected with the motor.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the user controls the motor operation through the second control button, the motor drives the adjusting screw rod to rotate, the adjusting sleeve moves upwards or downwards under the action of the screw thread along the adjusting screw rod, the adjusting sleeve moves along the surface of the guide rod through the sliding block, the sliding sleeve drives the sliding rail to move up and down, the sliding rail moves through the sliding block, and the sliding block drives the connecting rod to move up and down, so that the rotating angle of the frame shaft can be adjusted, the cloth feeding distance of the cloth feeding tooth can be adjusted, and the purpose of adjusting the needle distance is achieved.

[0017] 2. In the utility model, the user presses the first control button, the second control button controls the electric lifting frame to drive the cloth feeding tooth to move up and down, the cloth feeding distance can be controlled, and the needle distance can be controlled. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 The half-section structure schematic diagram of the device needle adjusting structure of the utility model;

[0020] Figure 3 The utility model Figure 2 The enlarged structure schematic diagram of A place in the middle;

[0021] Figure 4 The internal structure schematic diagram of the device of the utility model.

[0022] The sign of the drawing is explained: 100, table board; 101, first control button; 102, second control button; 200, sewing main body structure; 210, needle adjusting cam; 220, frame shaft; 300, connecting rod; 310, sliding block; 311, sliding rail; 400, adjusting and controlling box; 410, adjusting screw rod; 411, adjusting screw sleeve; 412, guide rod; 413, sliding sleeve; 414, lifting rod; 415, connecting plate; 420, scale box; 421, scale rod; 422, scale block; 423, mark block; 500, cloth feeding frame; 510, electric lifting frame; 511, cloth feeding tooth. DETAILED DESCRIPTION

[0023] The technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiment.

[0024] As Figures 1 to 3As shown, the embodiment provides a sewing machine with automatic needle spacing adjustment function, which comprises a table plate 100, the upper end of the table plate 100 is provided with a sewing main body structure 200, the surface of the sewing main body structure 200 is provided with a needle adjusting cam 210, the surface of the sewing main body structure 200 is sleeved with a connecting rod 300, one end of the connecting rod 300 penetrates through the table plate 100 and is movably connected with a frame shaft 220, the surface of the frame shaft 220 is movably installed with a cloth feeding frame 500, one end of the connecting rod 300 is provided with a needle adjusting structure, the needle adjusting structure comprises a mounting groove, the mounting groove is opened in the surface of the table plate 100, the connecting rod 300 movably penetrates in the inside of the mounting groove, one side of the upper end of the table plate 100 is fixedly installed with a control box 400, the control box 400 is located at one side of the connecting rod 300, one side of the control box 400 is movably installed with a sliding rail 311, the inside of the sliding rail 311 is movably installed with a sliding block 310, one side of the sliding block 310 is fixedly installed with a rotating block, the rotating block is rotatably connected with the surface of the connecting rod 300, the inside of the control box 400 is fixedly installed with a guide rod 412, the outside of the guide rod 412 is slidably installed with a sliding sleeve 413, the sliding sleeve 413 is connected with the sliding rail 311, the inside of the control box 400 is rotatably installed with an adjusting screw rod 410, the surface of the adjusting screw rod 410 is movably sleeved with an adjusting sleeve 411, the adjusting screw rod 410 and the adjusting sleeve 411 are located in the inside of the guide rod 412, the adjusting sleeve 411 is connected with the sliding sleeve 413, the upper end of the control box 400 is installed with a motor which is in driving connection with the adjusting screw rod 410, the both sides of the guide rod 412 are opened with a sliding groove, the sliding groove is penetrated with a sliding block, the both ends of the sliding block are fixedly connected with the sliding sleeve 413 and the adjusting sleeve 411 respectively, one side of the table plate 100 is provided with a second control button 102, the second control button 102 is electrically connected with the motor;

[0025] In the embodiment, the user controls the motor to run through the second control button 102, the motor drives the adjusting screw rod 410 to rotate, the adjusting sleeve 411 moves up or down along the adjusting screw rod 410 under the action of the thread, the adjusting sleeve 411 drives the sliding sleeve 413 to move along the surface of the guide rod 412 through the sliding block, the sliding sleeve 413 drives the sliding rail 311 to move up and down, the sliding rail 311 moves through the sliding block 310, the sliding block 310 drives the connecting rod 300 to move up and down, so as to adjust the rotation angle of the frame shaft 220, thereby adjusting the cloth feeding distance of the cloth feeding tooth 511, so as to achieve the purpose of adjusting the needle spacing.

[0026] As Figures 1 to 4As shown, this embodiment provides a sewing machine with an automatic stitch length adjustment function. A feed tooth 511 is provided on one side of the feed frame 500, and an electric lifting frame 510 is fixedly installed on one side of the feed frame 500. The upper end of the electric lifting frame 510 is fixedly connected to the lower end of the feed tooth 511. A first control button 101 is provided on one side of the table 100, and the first control button 101 is electrically connected to the electric lifting frame 510.

[0027] In this embodiment, the user presses the first control button 101, and the second control button 102 controls the electric lifting frame 510 to drive the feeding teeth 511 to move up and down, so as to adjust the feeding distance and thus the stitch length.

[0028] like Figures 1 to 3 As shown, this embodiment provides a sewing machine with an automatic stitch length adjustment function. The lower end of the adjusting screw sleeve 411 is fixedly installed with a lifting rod 414. The lower end of the lifting rod 414 is movably inserted through the lower end of the table 100 and is installed with a connecting plate 415. A scale box 420 is provided on one side of the control box 400. A marker block 423 is movably inserted through one side of the scale box 420. A scale block 422 is movably installed inside the scale box 420. The scale block 422 is connected to the marker block 423. A scale rod 421 connected to the connecting plate 415 is movably inserted through the lower end of the scale box 420. The upper end of the scale rod 421 is connected to the scale block 422.

[0029] In this embodiment, when the adjusting sleeve 411 moves to adjust the stitch pitch, the adjusting sleeve 411 drives the lifting rod 414 to move. The lifting rod 414 drives the scale rod 421 to move up and down through the connecting plate 415. The scale rod 421 drives the marking block 423 to move through the scale block 422, which can display the scale and show the stitch pitch.

[0030] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A sewing machine with automatic stitch length adjustment function, comprising a table (100), wherein a sewing main body structure (200) is provided at the upper end of the table (100), characterized in that: The sewing main structure (200) is provided with a needle adjusting cam (210) on its surface. A connecting rod (300) is sleeved on the surface of the sewing main structure (200). One end of the connecting rod (300) passes through the table (100) and is movably connected to a frame shaft (220). A feed frame (500) is movably mounted on the surface of the frame shaft (220). A feed tooth (511) is provided on one side of the feed frame (500). A needle adjusting structure is provided at one end of the connecting rod (300).

2. A sewing machine with automatic stitch length adjustment function according to claim 1, characterized in that: An electric lifting frame (510) is fixedly installed on one side of the fabric feeding frame (500). The upper end of the electric lifting frame (510) is fixedly connected to the lower end of the fabric feeding teeth (511). A first control button (101) is provided on one side of the table (100). The first control button (101) is electrically connected to the electric lifting frame (510).

3. A sewing machine with automatic stitch length adjustment function according to claim 1, characterized in that: The adjusting structure includes a mounting groove, which is formed on the surface of the table (100). The connecting rod (300) is movably inserted inside the mounting groove. A control box (400) is fixedly installed on one side of the upper end of the table (100). The control box (400) is located on one side of the connecting rod (300).

4. A sewing machine with automatic stitch length adjustment function according to claim 3, characterized in that: A sliding rail (311) is movably mounted on one side of the control box (400), a sliding block (310) is movably mounted inside the sliding rail (311), and a rotating block is fixedly mounted on one side of the sliding block (310). The rotating block is rotatably connected to the surface of the connecting rod (300).

5. A sewing machine with automatic stitch length adjustment function according to claim 4, characterized in that: The control box (400) has a guide rod (412) fixedly installed inside, and a sliding sleeve (413) is slidably installed on the outside of the guide rod (412). The sliding sleeve (413) is connected to the sliding rail (311).

6. A sewing machine with automatic stitch length adjustment function according to claim 5, characterized in that: An adjusting screw (410) is rotatably mounted inside the control box (400). An adjusting sleeve (411) is movably fitted on the surface of the adjusting screw (410). The adjusting screw (410) and the adjusting sleeve (411) are located inside the guide rod (412). The adjusting sleeve (411) is connected to the sliding sleeve (413). A motor that is drivenly connected to the adjusting screw (410) is installed at the upper end of the control box (400). Slide grooves are opened on both sides of the guide rod (412). A slider passes through the inside of the slide groove. The two ends of the slider are fixedly connected to the sliding sleeve (413) and the adjusting sleeve (411) respectively.

7. A sewing machine with automatic stitch length adjustment function according to claim 6, characterized in that: The lower end of the adjusting screw sleeve (411) is fixedly installed with a lifting rod (414). The lower end of the lifting rod (414) is movably inserted through the lower end of the table (100) and is installed with a connecting plate (415). A scale box (420) is provided on one side of the control box (400). A marker block (423) is movably inserted through one side of the scale box (420). A scale block (422) is movably installed inside the scale box (420). The scale block (422) is connected to the marker block (423). A scale rod (421) connected to the connecting plate (415) is movably inserted through the lower end of the scale box (420). The upper end of the scale rod (421) is connected to the scale block (422).

8. A sewing machine with automatic stitch length adjustment function according to claim 7, characterized in that: A second control button (102) is provided on one side of the table (100), and the second control button (102) is electrically connected to the motor.

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