Adjustable sewing machine needle plate

Abstract

The utility model relates to the technical field of sewing machines, and specifically to an adjustable sewing machine needle plate, comprising a sewing machine body, one end of the sewing machine body being rotatably connected to an adjustment mechanism, the adjustment mechanism comprising a connecting column, the connecting column being rotatably connected to one end of the sewing machine body and penetrating into the interior of the sewing machine body, the top and bottom ends of the sewing machine body being fixedly mounted with a displacement mechanism, the displacement mechanism comprising a needle plate body, the needle plate body being slidably connected to the bottom end of the sewing machine body, the top end of the sewing machine body being slidably connected to a needle machine assembly and being located directly above the needle plate body, and one end of the needle plate body and the needle machine assembly being fixedly mounted with a connecting rack. The utility model can drive the needle plate and the needle machine inside the sewing machine body to synchronously perform adjustment operations through the mutual cooperation between the internal parts of the adjustment mechanism and the internal parts of the displacement mechanism, thereby reducing the positional deviation of the machine needle and the needle hole.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to an adjustable sewing machine needle plate. Background Art

[0002] A sewing machine is a machine used to sew clothes. Its principle is to pass the needle through the sewing material, cross the upper thread and the lower thread to form a knot, and drive the sewing material to form one or more stitches on the sewing material to sew the sewing material. The sewing machine is equipped with a needle plate with a needle hole, so that the needle can pass through the needle hole to bring the upper thread under the sewing machine table, and form a knot with the lower thread through the rotary hook or curved needle.

[0003] After searching, a utility model invention patent with the publication number CN107675374 B specifically discloses a needle plate adjustment structure of a sewing machine, which belongs to the technical field of sewing machines. It solves the problem that it is difficult to adjust the position of the needle plate and ensure the reliability of the fixation of the needle plate and the bottom plate in the existing sewing machine. The needle plate adjustment structure of the sewing machine includes a needle plate mounting sleeve, and there is a clearance between the outer side of the needle plate and the inner wall of the mounting hole. The needle plate mounting sleeve has a connecting part and a pull rod part. The needle plate is fixed to the connecting part by a fastener. The mounting seat has an adjustment hole. The pull rod part can pass through the corresponding adjustment hole and there is an adjustment gap between the pull rod part and the hole wall of the adjustment hole. The pull rod part is provided with a locking part that can fix the needle plate mounting sleeve to the mounting seat. The needle plate adjustment structure of the sewing machine is achieved by installing the needle plate mounting sleeve on the mounting seat in an adjustable position, and fixing it to the mounting seat through a locking part. The needle plate is fixed to the mounting seat through the locking part mounting sleeve, so that the positioning of the needle plate is more reliable on the basis of realizing the adjustable position of the needle plate.

[0004] In the above patent, the needle plate is adjustably mounted on the mounting base only by the connecting part and the pull rod part. However, when adjusting the existing sewing machines, most of them only adjust the needle plate, and cannot drive the needle plate and the needle machine to adjust their positions at the same time, resulting in the position of the needle and the needle hole being offset, affecting the sewing action, and in severe cases, may cause the dangerous phenomenon of needle and thread breakage.

[0005] Therefore, it is necessary that we propose an adjustable sewing machine needle plate to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an adjustable sewing machine needle plate, which can drive the needle plate and needle machine inside the sewing machine body to perform adjustment operations synchronously through the cooperation between the internal parts of the adjustment mechanism and the internal parts of the displacement mechanism, thereby reducing the position deviation of the machine needle and the needle hole, so as to solve the problem in the prior art that the needle plate and the needle machine cannot be driven to adjust their positions at the same time, resulting in the position deviation of the machine needle and the needle hole, affecting the sewing action, and in severe cases may cause the dangerous phenomenon of broken needles and broken threads.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable sewing machine needle plate, comprising a sewing machine body, one end of the sewing machine body is rotatably connected with an adjustment mechanism and penetrates into the interior of the sewing machine body, and the top and bottom ends of the sewing machine body are fixedly installed with displacement mechanisms and penetrate into the interior of the sewing machine body;

[0008] The adjusting mechanism comprises a connecting column, the connecting column is rotatably connected to one end of the sewing machine body and penetrates into the interior of the sewing machine body, a telescopic column is installed at one end of the connecting column away from the sewing machine body and penetrates into the interior of the connecting column, a telescopic spring is connected and fixed to one end of the telescopic column and is located inside the connecting column, a slider is connected and fixed to the top end of the telescopic column and is slidably connected to the interior of the connecting column, a connecting shaft is rotatably connected to the top end of the connecting shaft, a limiting block is connected and fixed to the top end of the connecting shaft and penetrates the connecting column to the interior of the sewing machine body, a torsion spring is sleeved and fixed to the outer wall of the connecting shaft, a connecting gear is sleeved and fixed to the outer wall of the connecting column and is located inside the sewing machine body;

[0009] The displacement mechanism includes a needle plate body, which is slidably connected to the bottom end of the sewing machine body, and the top of the sewing machine body is slidably connected to the needle machine assembly and is located directly above the needle plate body. A connecting rack is fixedly installed on one end of the needle plate body and the needle machine assembly and is slidably connected to the inside of the sewing machine body. A transmission shaft is rotatably connected to the inside of the sewing machine body and is located at one end of the connecting rack. Support racks are slidably connected to both sides of the connecting column and are located inside the sewing machine body. A support shaft is installed on one side of the top of the support rack and is rotatably connected to the inside of the sewing machine body. The outer wall of the support shaft is sleeved with a transmission gear, and the outer walls of the support shaft and the transmission shaft are sleeved with a transmission belt.

[0010] Preferably, the connecting column is rotatably connected to the sewing machine body via a bearing, the two ends of the torsion spring are respectively connected and fixed to a limit block and a slider, and a sliding groove matching the telescopic column and the slider is provided inside the connecting column.

[0011] Preferably, a plurality of limit grooves matching the limit blocks are provided inside the sewing machine body, tooth grooves are provided at the top and bottom ends of the support rack, and are respectively meshed with the connecting gear and the transmission gear, and a support groove matching the support rack is provided inside the sewing machine body.

[0012] Preferably, a sliding groove matching the needle plate body and the needle machine assembly is provided inside the sewing machine body, a tooth block is sleeved on the outer wall of the transmission shaft and meshes with the connecting rack, and a transmission groove matching the transmission belt is provided inside the sewing machine body.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. By pushing the telescopic column, the telescopic column squeezes the telescopic spring to shrink and move, and the movement of the telescopic column drives the slider to move, and the movement of the slider drives the limit block to move through the connecting shaft, so that the limit block squeezes the torsion spring to shrink, and the torsion spring shrinks and drives the connecting shaft to rotate, and the rotation of the connecting shaft drives the limit block to move out of the sewing machine body, and the slider moves through the connecting shaft to drive the limit block from the inside of the sewing machine body to the inside of the release connecting column, and the limit fixation between the limit block and the sewing machine body is released, so that the position fixation of the connecting column can be released, which is convenient for adjusting the internal parts of the sewing machine body;

[0015] 2. By releasing the position fixation of the connecting column and rotating the connecting column, the connecting column drives the connecting gear to rotate, and the connecting gear rotates to drive the supporting rack to move through the tooth block, so that the supporting rack drives the transmission gear to rotate through the tooth groove at the top, and the transmission gear rotates to drive the supporting shaft to rotate, so that the supporting shaft drives the transmission shaft to rotate through the transmission belt, and the transmission shaft rotates to drive the connecting rack to move, and the movement of the connecting rack drives the needle plate body and the needle machine assembly to move, so that the needle plate body and the needle machine assembly can be adjusted in position inside the sewing machine body, which can drive the needle plate body and the needle machine assembly to adjust their positions synchronously, thereby reducing the position offset of the needle and the needle hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the side structure section of the sewing machine body of the utility model;

[0019] Figure 3 It is a schematic cross-sectional structure diagram of the sewing machine body of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting column of the utility model;

[0021] Figure 5 For the utility model Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 6 For the utility model Figure 4Enlarged structural diagram at B in the middle.

[0023] Description of reference numerals:

[0024] 1. Sewing machine body; 2. Adjustment mechanism; 201. Connecting column; 202. Telescopic column; 203. Telescopic spring; 204. Sliding block; 205. Connecting shaft; 206. Limit block; 207. Torsion spring; 208. Connecting gear; 3. Displacement mechanism; 301. Needle plate body; 302. Needle machine assembly; 303. Connecting rack; 304. Transmission shaft; 305. Transmission belt; 306. Support shaft; 307. Transmission gear; 308. Support rack. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-6 An adjustable sewing machine needle plate shown in the figure comprises a sewing machine body 1, one end of the sewing machine body 1 is rotatably connected with an adjustment mechanism 2 and penetrates into the interior of the sewing machine body 1, and a displacement mechanism 3 is fixedly installed at the top and bottom ends of the sewing machine body 1 and penetrates into the interior of the sewing machine body 1;

[0027] The adjusting mechanism 2 includes a connecting column 201, which is rotatably connected to one end of the sewing machine body 1 and penetrates into the interior of the sewing machine body 1. A telescopic column 202 is installed at one end of the connecting column 201 away from the sewing machine body 1 and penetrates into the interior of the connecting column 201. A telescopic spring 203 is connected and fixed to one end of the telescopic column 202 and is located inside the connecting column 201. A slider 204 is connected and fixed to the top of the telescopic column 202 and is slidably connected to the interior of the connecting column 201. A connecting shaft 205 is rotatably connected to the top of the connecting shaft 205. A limiting block 206 is connected and fixed to the top of the connecting shaft 205 and penetrates the connecting column 201 to the interior of the sewing machine body 1. A torsion spring 207 is sleeved and fixed to the outer wall of the connecting shaft 205. A connecting gear 208 is sleeved and fixed to the outer wall of the connecting column 201 and is located inside the sewing machine body 1. The connecting column 201 can be released from position fixation by the mutual cooperation between the internal parts of the adjusting mechanism 2.

[0028] The displacement mechanism 3 includes a needle plate body 301, which is slidably connected to the bottom end of the sewing machine body 1, and a needle machine assembly 302 is slidably connected to the top of the sewing machine body 1 and is located directly above the needle plate body 301. A connecting rack 303 is fixedly installed at one end of the needle plate body 301 and the needle machine assembly 302, and is slidably connected to the inside of the sewing machine body 1. A transmission shaft 304 is rotatably connected to the inside of the sewing machine body 1 and is located at one end of the connecting rack 303. Support racks 308 are slidably connected to both sides of the connecting column 201 and are located inside the sewing machine body 1. A support shaft 306 is installed on one side of the top of the support rack 308 and is rotatably connected to the inside of the sewing machine body 1. A transmission gear 307 is sleeved on the outer wall of the support shaft 306, and a transmission belt 305 is sleeved on the outer walls of the support shaft 306 and the transmission shaft 304. Through the mutual cooperation between the internal parts of the displacement mechanism 3, the positions of the needle plate body 301 and the needle machine assembly 302 can be adjusted synchronously.

[0029] By the mutual cooperation between the internal parts of the adjustment mechanism 2 and the internal parts of the displacement mechanism 3, the needle plate and the needle machine inside the sewing machine body 1 can be driven to perform adjustment operations synchronously, thereby reducing the position deviation of the needle and the needle hole.

[0030] Refer to the instruction manual Figure 1-6 The connecting column 201 is rotatably connected to the sewing machine body 1 through a bearing, and the two ends of the torsion spring 207 are respectively connected and fixed to the limit block 206 and the slider 204. A sliding groove matching the telescopic column 202 and the slider 204 is opened inside the connecting column 201. The two ends of the torsion spring 207 are respectively connected and fixed to the limit block 206 and the slider 204, so that after the limit block 206 is squeezed, the limit block 206 squeezes the torsion spring 207 to shrink and move.

[0031] Refer to the instruction manual Figure 1-6 A plurality of limit grooves matching the limit block 206 are provided inside the sewing machine body 1, and tooth grooves are provided at the top and bottom ends of the support rack 308, which are respectively meshed with the connecting gear 208 and the transmission gear 307. A support groove matching the support rack 308 is provided inside the sewing machine body 1, and tooth grooves are provided at the top and bottom ends of the support rack 308, so that the connecting gear 208 can rotate to drive the support rack 308 to move, thereby driving the transmission gear 307 to rotate.

[0032] Refer to the instruction manual Figure 1-6A sliding groove matching the needle plate body 301 and the needle machine assembly 302 is provided inside the sewing machine body 1, a tooth block is sleeved on the outer wall of the transmission shaft 304, and is meshed with the connecting rack 303, and a transmission groove matching the transmission belt 305 is provided inside the sewing machine body 1. The sliding groove provided inside the sewing machine body 1 facilitates the movement of the needle plate body 301 and the needle machine assembly 302 inside the sewing machine body 1.

[0033] How this utility works:

[0034] Refer to the instruction manual Figure 1-6 , by pushing the telescopic column 202, the telescopic column 202 squeezes the telescopic spring 203 to shrink and move, the movement of the telescopic column 202 drives the slider 204 to move, the slider 204 moves through the connecting shaft 205 to drive the limit block 206 to move, the limit block 206 squeezes the torsion spring 207 to shrink, the torsion spring 207 shrinks and drives the connecting shaft 205 to rotate, the connecting shaft 205 rotates and drives the limit block 206 to move out of the sewing machine body 1, the slider 204 moves through the connecting shaft 205 to drive the limit block 206 to move from the inside of the sewing machine body 1 to the inside of the releasing connecting column 201, the limiting fixation between the limit block 206 and the sewing machine body 1 can be released, the position fixation of the connecting column 201 can be released, and the internal parts of the sewing machine body 1 can be adjusted.

[0035] Refer to the instruction manual Figure 1-6 By releasing the position fixation of the connecting column 201 and rotating the connecting column 201, the connecting column 201 rotates and drives the connecting gear 208 to rotate. The connecting gear 208 rotates and drives the supporting rack 308 to move through the tooth block, so that the supporting rack 308 drives the transmission gear 307 to rotate through the tooth groove at the top. The transmission gear 307 rotates and drives the support shaft 306 to rotate. The support shaft 306 drives the transmission shaft 304 to rotate through the transmission belt 305. The transmission shaft 304 rotates and drives the connecting rack 303 to move. The connecting rack 303 moves and drives the needle plate body 301 and the needle machine assembly 302 to move. The needle plate body 301 and the needle machine assembly 302 are adjusted in position inside the sewing machine body 1, which can drive the needle plate body 301 and the needle machine assembly 302 to adjust their positions synchronously, thereby reducing the position offset of the needle and the needle hole.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An adjustable sewing machine needle plate, comprising a sewing machine body (1), characterized in that: One end of the sewing machine body (1) is rotatably connected to an adjusting mechanism (2) which penetrates into the interior of the sewing machine body (1); the top and bottom ends of the sewing machine body (1) are fixedly mounted with displacement mechanisms (3) which penetrate into the interior of the sewing machine body (1); The adjusting mechanism (2) comprises a connecting column (201), wherein the connecting column (201) is rotatably connected to one end of the sewing machine body (1) and penetrates into the interior of the sewing machine body (1); a telescopic column (202) is installed at one end of the connecting column (201) away from the sewing machine body (1) and penetrates into the interior of the connecting column (201); a telescopic spring (203) is connected and fixed to one end of the telescopic column (202) and is located inside the connecting column (201); and a top end of the telescopic column (202) is connected and fixed to a telescopic spring (203) A slider (204) is provided, and is slidably connected to the inside of the connecting column (201); the top end of the connecting column (201) is rotatably connected to a connecting shaft (205); the top end of the connecting shaft (205) is connected to a fixed limit block (206) and passes through the connecting column (201) to the inside of the sewing machine body (1); a torsion spring (207) is sleeved and fixed on the outer wall of the connecting shaft (205); a connecting gear (208) is sleeved and fixed on the outer wall of the connecting column (201) and is located inside the sewing machine body (1); The displacement mechanism (3) comprises a needle plate body (301), the needle plate body (301) is slidably connected to the bottom end of the sewing machine body (1), the top end of the sewing machine body (1) is slidably connected to a needle machine assembly (302) and is located directly above the needle plate body (301), one end of the needle plate body (301) and the needle machine assembly (302) is fixedly mounted with a connecting rack (303) and is slidably connected to the inside of the sewing machine body (1), and the inside of the sewing machine body (1) is rotatably connected to a transmission The connecting column (201) is provided with a supporting rack (308) which is slidably connected to one end of the connecting rack (303); the two sides of the connecting column (201) are provided with supporting racks (308) which are located inside the sewing machine body (1); a supporting shaft (306) is installed on one side of the top of the supporting rack (308) and is rotatably connected to the inside of the sewing machine body (1); a transmission gear (307) is sleeved on the outer wall of the supporting shaft (306); and a transmission belt (305) is sleeved on the outer walls of the supporting shaft (306) and the transmission shaft (304).

2. The adjustable sewing machine needle plate according to claim 1, characterized in that: The connecting column (201) is rotatably connected to the sewing machine body (1) via a bearing, the two ends of the torsion spring (207) are respectively connected and fixed to the limit block (206) and the slider (204), and a sliding groove matching the telescopic column (202) and the slider (204) is provided inside the connecting column (201).

3. The adjustable sewing machine needle plate according to claim 1, characterized in that: A plurality of limit grooves matching the limit blocks (206) are provided inside the sewing machine body (1); tooth grooves are provided at the top and bottom of the support rack (308) and are respectively meshed with the connecting gear (208) and the transmission gear (307); and a support groove matching the support rack (308) is provided inside the sewing machine body (1).

4. The adjustable sewing machine needle plate according to claim 1, characterized in that: The interior of the sewing machine body (1) is provided with a sliding groove matching the needle plate body (301) and the needle machine assembly (302); the outer wall of the transmission shaft (304) is sleeved with a tooth block and meshes with the connecting rack (303); the interior of the sewing machine body (1) is provided with a transmission groove matching the transmission belt (305).

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