Sewing machine

Abstract

The utility model belongs to the technical field of cloth processing, and particularly relates to a sewing machine which comprises a platen, a sewing machine head and a clamp assembly, the sewing machine head and the clamp assembly are both arranged on the platen, and the clamp assembly is located below the sewing machine head. The clamp assembly comprises a moving module, a feeding plate arranged on the moving module and a positioning clamping plate arranged in the feeding plate, and a containing groove is formed in the positioning clamping plate. A supporting plate is fixed to one side of the table plate, the moving module drives the feeding plate and the positioning clamping plate to move on the supporting plate according to a preset track, the sewing machine head comprises a needle head, and the needle head is arranged above the supporting plate in an up-down moving mode. The sewing material is automatically positioned through the positioning clamping plate, manual pressing and positioning are not needed, the positioning accuracy is improved, the proportion of defective products is reduced, and meanwhile the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cloth processing, in particular to a sewing machine. Background Art

[0002] A sewing machine uses one or more sewing threads to create one or more stitches on a material, interweaving or stitching one or more layers of material. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products such as leather, plastic, and paper. The stitches produced are neat, beautiful, smooth, and firm, while also being fast and easy to use. A sewing machine generally consists of a machine head, a base, and a transmission assembly. During the sewing process, the material must be positioned so that it can sew along a predetermined trajectory. Currently, conventional sewing machines rely primarily on manual positioning, which is inaccurate and prone to errors, resulting in a high rate of defective products. Furthermore, to avoid production delays, a large number of workers are often required to work around the clock, increasing production costs and reducing efficiency. Conventional sewing machines also pose safety risks, making it easy to injure hands during the sewing process. Utility Model Content

[0003] In order to solve the problems in the above-mentioned background technology, the utility model provides a sewing machine, which realizes precise positioning of the cloth through a feed plate and a positioning clamp, thereby greatly reducing the proportion of defective products.

[0004] The utility model adopts the following technical solutions:

[0005] A sewing machine comprises a table, a sewing machine head and a clamp assembly, wherein:

[0006] The sewing machine head and the clamp assembly are both arranged on the table, and the clamp assembly is located below the sewing machine head;

[0007] The fixture assembly includes a moving module, a feeding plate arranged on the moving module, and a positioning clamping plate arranged on the feeding plate, wherein a placement slot is provided on the positioning clamping plate;

[0008] A support plate is fixed on one side of the table. The moving module drives the feeding plate and the positioning clamp to move along a predetermined track on the support plate. The sewing machine head includes a needle, which is movably arranged above the support plate.

[0009] Furthermore, the movable module includes a first movable module arranged along the first direction and a second movable module arranged along the second direction;

[0010] The first direction and the second direction are arranged perpendicularly, and the second movable module is arranged on the first movable module, and the feeding plate and the positioning clamping plate are arranged on the second movable module;

[0011] The first moving module drives the second moving module to move back and forth along the first direction, and the second moving module drives the feeding plate and the positioning clamping plate to move back and forth along the second direction; or

[0012] The first moving module drives the second moving module to move back and forth along the second direction, and the second moving module drives the feeding plate and the positioning clamping plate to move back and forth along the first direction.

[0013] Furthermore, the first movable module drives the second movable module to reciprocate along the first direction, and the second movable module drives the feeding plate and the positioning clamping plate to reciprocate along the second direction;

[0014] The first movable module includes two first slide rails arranged parallel to the first direction and at least two first sliding blocks matched with the two first slide rails. A mounting plate is fixed on the at least two first sliding blocks, and the second movable module is arranged on the mounting plate.

[0015] Furthermore, the second movable module includes two second slide rails fixed on the mounting plate and parallel to the second direction, and a slide plate slidably connected to the two second slide rails, wherein a connecting arm is fixed on the slide plate;

[0016] The connecting arm includes a sliding column extending in a first direction and a sliding sleeve mounted on the sliding column. A telescopic rod is fixed on the outer side of the sliding sleeve. The telescopic rod drives the feeding plate and the positioning clamping plate to move back and forth in a second direction.

[0017] Furthermore, the feeding plate is detachably connected to the mounting plate by bolts.

[0018] Furthermore, a lifting and pressing arm is fixed on the mounting plate, and the end of the lifting and pressing arm away from the connecting arm is slidably connected to a pressure foot plate, which is located directly above the feeding plate and is a hollow annular structure.

[0019] Furthermore, the presser foot moves up and down on the lifting and pressing arm through a guide assembly, and the guide assembly is driven by a cylinder.

[0020] Furthermore, the guide assembly includes a presser foot slider fixedly connected to the presser foot plate and a presser foot wrench that pushes the presser foot slider up and down. The end of the presser foot wrench away from the presser foot plate is hingedly connected to the telescopic rod of the cylinder. The presser foot wrench is also hingedly connected to the lifting and pressing arm through a rotating shaft, and the rotating shaft is located below the telescopic rod of the cylinder.

[0021] Furthermore, a thread rack and an operation panel are provided on the table, and the operation panel is communicatively connected with the mobile module and the sewing machine head.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The sewing machine of the present invention includes a clamp assembly, which includes a moving module, a feed plate arranged on the moving module, and a positioning clamp plate arranged in the feed plate. A placement groove is provided on the positioning clamp plate, and the sewing material is automatically positioned by the positioning clamp plate without manual pressing and positioning, thereby improving the positioning accuracy, reducing the proportion of defective products, and improving production efficiency.

[0024] (2) The sewing machine of the present invention is provided with a first movable module and a second movable module, which drive the feed plate and the positioning clamp to move to any position. During the sewing process, the needle drops, and the first movable module and the second movable module work simultaneously to make the needle drop within the range of the positioning clamp, thereby avoiding damage to the human body caused by the needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is the overall structure diagram of the sewing machine of the utility model;

[0027] Figure 2 This is the structural diagram of the mobile module of the sewing machine of the utility model (1);

[0028] Figure 3 This is the structural diagram of the mobile module of the sewing machine of the utility model (II);

[0029] Among them: 1-table, 2-sewing machine head, 21-thread plate, 3-clamp assembly, 31-first movable module, 311-first slide rail, 312-first slider, 313-mounting plate, 32-second movable module, 321-second slide rail, 322-slide plate, 323-slide column, 324-slide sleeve, 325-telescopic rod, 33-feeding plate, 34-positioning splint, 35-lifting and pressing arm, 36-presser foot plate, 37-guide assembly, 371-presser foot slider, 372-presser foot wrench, 373-rotating shaft, 38-cylinder, 4-support plate, 5-thread rack, 6-operation panel, 7-foot pedal. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The following is combined with Figure 1 To the attached Figure 3 And specific embodiments discuss the present invention in detail.

[0032] like Figure 1-3 As shown, the utility model provides a sewing machine, including a table 1, a sewing machine head 2 and a clamp assembly 3, wherein: the sewing machine head 2 and the clamp assembly 3 are both arranged on the table 1, and the clamp assembly 3 is located below the sewing machine head 2, for positioning the sewing material; the clamp assembly 3 includes a movable module, a feed plate 33 arranged on the movable module and a positioning clamp 34 arranged on the feed plate 33, and a placement groove is provided on the positioning clamp 34; a support plate 4 is fixed to one side of the table 1, and the movable module drives the feed plate 33 and the positioning clamp 34 to move along a predetermined trajectory on the support plate 4, and the sewing machine head 2 includes a needle, which is arranged above the support plate 4 so as to be movable up and down. The present invention provides a placement slot on the positioning clamp 34 to limit the sewing space of the sewing machine head 2. The movable module drives the feed plate 33 and the positioning clamp 34 to move, so that the needle of the sewing machine head 2 can only move within the placement slot, thereby achieving automatic positioning of the sewing material, eliminating the need for manual pressing and positioning, improving positioning accuracy, and reducing the proportion of defective products. It should be noted that the positioning clamp 34 in this application can be replaced according to the size of the material to be sewn to achieve sewing of materials of different sizes.

[0033] Specifically, in one embodiment, the movable module includes a first movable module 31 arranged along the first direction and a second movable module 32 arranged along the second direction; the first direction and the second direction are arranged perpendicularly, and the second movable module 32 is arranged on the first movable module 31, and the feeding plate 33 and the positioning clamping plate 34 are arranged on the second movable module 32; the first movable module 31 drives the second movable module 32 to move back and forth along the first direction, and the second movable module 32 drives the feeding plate 33 and the positioning clamping plate 34 to move back and forth along the second direction; or the first movable module 31 drives the second movable module 32 to move back and forth along the second direction, and the second movable module 32 drives the feeding plate 33 and the positioning clamping plate 34 to move back and forth along the first direction.

[0034] It should be noted that the first direction in this embodiment is the Y-axis direction in the accompanying drawings, and the second direction is the X-axis direction in the accompanying drawings, but they are not limited to this. As long as the first direction and the second direction can realize the movement of the feeding plate 33 and the positioning clamp 34 to any position, they fall within the scope of protection of this application.

[0035] Specifically, in this embodiment, the first movable module 31 drives the second movable module 32 to reciprocate along the first direction, and the second movable module 32 drives the feed plate 33 and the positioning clamping plate 34 to reciprocate along the second direction. That is, the feed plate 33 and the positioning clamping plate 34 can move along the X-axis direction or the Y-axis direction, thereby adjusting the position of the positioning clamping plate 34 so that the needle head is inserted into the placement groove of the positioning clamping plate 34; the first movable module 31 includes two first slide rails 311 arranged parallel to the first direction (i.e., the Y-axis direction) and at least two first sliders 312 matching the two first slide rails 311. A mounting plate 313 is fixed to the at least two first sliders 312, and the second movable module 32 is arranged on the mounting plate 313. The mounting plate 313 is fixedly mounted on the belt of the belt drive mechanism, and the belt drives the mounting plate 313 to move along the Y-axis direction, thereby driving the second movable module 32 to move along the Y-axis direction.

[0036] Specifically, in this embodiment, the second movable module 32 includes two second slide rails 321 fixed on the mounting plate 313 and parallel to the second direction (i.e., the X-axis direction), and a slide plate 322 slidably connected to the two second slide rails 321, and a connecting arm is fixed on the slide plate 322; the connecting arm includes a slide column 323 extending along the first direction and a sliding sleeve 324 mounted on the slide column 323, and a telescopic rod 325 is fixed on the outer side of the sliding sleeve 324, and the telescopic rod 325 is telescopic to drive the feeding plate 33 and the positioning clamping plate 34 to move back and forth along the second direction.

[0037] In this embodiment, the position of the telescopic rod 325 remains unchanged. When the feed plate 33 and the positioning clamp 34 move along the Y-axis direction, the sliding column 323 also moves along the Y-axis direction. In order to achieve the unchanged position of the telescopic rod 325, the position of the sliding sleeve 324 cooperating with the sliding column 323 also remains unchanged, that is, during the movement along the Y-axis, the sliding column 323 slides relative to the sliding sleeve 324.

[0038] Specifically, the feed plate 33 is detachably connected to the mounting plate 313 by bolts. When sewing patterns of different sizes, the feed plate 33 and the positioning clamping plate 34 can be replaced to adapt to the diverse sewing requirements.

[0039] Specifically, in this embodiment, a lifting and pressing arm 35 is further fixed to the mounting plate 313. The end of the lifting and pressing arm 35, which is remote from the connecting arm, is slidably connected to a presser foot 36. The presser foot 36 is located directly above the feed plate 33 and has a hollow, annular structure. It is used to secure the sewing material to prevent it from twisting during sewing, which could affect the sewing effect. The presser foot 36 moves up and down on the lifting and pressing arm 35 via a guide assembly 37, which is driven by a cylinder 38. The guide assembly 37 includes a presser foot slider 371 fixedly connected to the presser foot plate 36 and a presser foot wrench 372 that pushes the presser foot slider 371 up and down. The end of the presser foot wrench 372 away from the presser foot plate 36 is hingedly connected to the telescopic rod of the cylinder 38. The presser foot wrench 372 is also hingedly connected to the lifting arm 35 through a rotating shaft 373. The rotating shaft 373 is located below the telescopic rod of the cylinder 38; when working, the cylinder 38 applies pressure to push the telescopic rod forward, and the telescopic rod pushes the presser foot wrench 372 to rotate around the rotating shaft 373. The presser foot wrench 372 rotates to push the presser foot slider 371 up and down, thereby pushing the presser foot plate 36 to move up and down.

[0040] Specifically, a thread rack 5 and an operating panel 6 are also provided on the table 1, and a thread passing piece 21 is provided on the sewing machine head 2. The sewing thread passes through the thread rack 5 and the thread passing piece 21 in turn and is passed onto the needle. The operating panel 6 is communicated with the mobile module and the sewing machine head 2. A foot pedal 7 is also provided under the table 1, and the needle movement is controlled by the foot pedal 7.

[0041] The working principle of the present invention is as follows: First, the material to be processed is placed in the position of the positioning clamp 34 on the feed plate 33. Then, the drawings and parameters are input into the equipment on the operation panel 6. The sewing machine is started. The feed plate 33 moves to the bottom of the needle on the support plate 4 through the first movable module 31 and the second movable module 32. Then, the cylinder 38 pushes the guide assembly 37 to drive the presser foot 36 to move downward to fix the surrounding sewing material. After processing begins, after stepping on the foot pedal 7, the needle descends and drives the sewing thread from the thread rack 5 through the thread piece 21 to begin sewing. The second movable module 32 pushes the feed plate 33 and the positioning clamp 34 to move left and right on the support plate 4 to sew horizontal lines. The first movable module 31 pushes the feed plate 33 and the positioning clamp 34 to move back and forth on the support plate 4 to sew vertical lines. After sewing is completed, the foot pedal 7 is released. If it is necessary to change the pattern, the pattern to be changed can be selected on the operation panel 6 after the previous pattern is completed. After that, the feed plate 33 moves back to the bottom of the needle to start the next round of sewing.

[0042] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A sewing machine, characterized in that: It includes a table, a sewing machine head and a clamp assembly, wherein: The sewing machine head and the clamp assembly are both arranged on the table, and the clamp assembly is located below the sewing machine head; The clamp assembly includes a moving module, a feeding plate arranged on the moving module, and a positioning clamping plate arranged on the feeding plate, wherein a placement groove is provided on the positioning clamping plate; A support plate is fixed on one side of the table, and the movable module drives the feed plate and the positioning clamp to move along a predetermined track on the support plate. The sewing machine head includes a needle, and the needle is arranged above the support plate so as to be movable up and down.

2. The sewing machine according to claim 1, characterized in that The movable module includes a first movable module arranged along a first direction and a second movable module arranged along a second direction; The first direction and the second direction are arranged perpendicularly, and the second movable module is arranged on the first movable module, and the feeding plate and the positioning clamping plate are arranged on the second movable module; The first moving module drives the second moving module to move back and forth along the first direction, and the second moving module drives the feeding plate and the positioning clamping plate to move back and forth along the second direction; or The first moving module drives the second moving module to move back and forth along the second direction, and the second moving module drives the feeding plate and the positioning clamping plate to move back and forth along the first direction.

3. The sewing machine according to claim 1, wherein The first movable module drives the second movable module to reciprocate along the first direction, and the second movable module drives the feeding plate and the positioning clamping plate to reciprocate along the second direction; The first movable module includes two first slide rails arranged parallel to the first direction and at least two first sliders matched with the two first slide rails. A mounting plate is fixed on at least two of the first sliders, and the second movable module is arranged on the mounting plate.

4. The sewing machine according to claim 3, characterized in that The second movable module includes two second slide rails fixed to the mounting plate and parallel to the second direction, and a slide plate slidably connected to the two second slide rails, wherein a connecting arm is fixed to the slide plate; The connecting arm includes a sliding column extending along a first direction and a sliding sleeve mounted on the sliding column. A telescopic rod is fixed to the outer side of the sliding sleeve. The telescopic rod is extended to drive the feeding plate and the positioning clamping plate to reciprocate along the second direction.

5. The sewing machine according to claim 3, characterized in that The feeding plate is detachably connected to the mounting plate by bolts.

6. The sewing machine according to claim 4, characterized in that A lifting and pressing arm is also fixed on the mounting plate. The end of the lifting and pressing arm away from the connecting arm is slidably connected to a presser foot plate. The presser foot plate is located directly above the feeding plate and is a hollow annular structure.

7. The sewing machine according to claim 6, characterized in that The presser foot moves up and down on the lifting and pressing arm through a guide assembly, and the guide assembly is driven by a cylinder.

8. The sewing machine according to claim 7, characterized in that The guide assembly includes a presser foot slider fixedly connected to the presser foot plate and a presser foot wrench that pushes the presser foot slider up and down. The end of the presser foot wrench away from the presser foot plate is hingedly connected to the telescopic rod of the cylinder. The presser foot wrench is also hingedly connected to the lifting and pressing arm through a rotating shaft, and the rotating shaft is located below the telescopic rod of the cylinder.

9. The sewing machine according to claim 1, wherein The table is also provided with a thread rack and an operating panel, and the operating panel is communicatively connected with the moving module and the sewing machine head.

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