A sewing machine

Abstract

This utility model relates to the field of sewing equipment technology, specifically a fabric feeding machine. The utility model includes a feeding device comprising a main body, a head, a mounting platform, and a tail. A mounting seat is mounted on the mounting platform and pivotally connected to the main body. A rotational swing gap exists between the mounting seat and the upper surface of the mounting platform, allowing the mounting seat to rotate and swing left and right relative to the mounting platform. When the mounting seat is subjected to unbalanced forces on its left and right sides, it can achieve relative rotational swing, thereby automatically adjusting the force balance and ensuring smooth fabric feeding. This invention is suitable for various fabrics and has a wide range of applications.

Description

Technical Field

[0001] This utility model relates to the field of sewing equipment technology, and specifically to a sewing machine. Background Technology

[0002] To pull the sewn fabric apart along the seam, a fabric spreading machine is needed. Existing fabric spreading machines consist of a base with rollers mounted on it, each with a belt. Above the base is a pressure roller, also with a belt. The pressure roller's belt is driven by a motor. When the pressure roller descends, it presses against the rollers, and the fabric is fed between the upper and lower belts. During processing, if the fabric has varying thicknesses, asynchronous feeding from left to right can occur, leading to processing quality issues.

[0003] Therefore, based on the aforementioned shortcomings of existing sewing machines, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a sewing machine that addresses the shortcomings of existing technologies, such as the possibility of asynchronous feeding.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] A sewing machine includes a feeding device, which includes a main body with a head, a mounting platform, and a tail. A mounting seat is mounted on the mounting platform and is pivotally connected to the main body. There is a rotational swing gap between the mounting seat and the upper surface of the mounting platform, and the mounting seat can rotate and swing left and right relative to the mounting platform.

[0007] Furthermore, the mounting base has pivot portions at its front and rear ends, each pivot portion having an outwardly extending pivot. Bearings are mounted on the head and tail ends, and the pivots are fitted inside the bearings. The mounting base can rotate and swing relative to each other via the two pivots.

[0008] Furthermore, the two pivotal parts have a connecting part, which increases the strength.

[0009] Furthermore, the mounting base has side plates on both sides, and the side plates are provided with snap-fit ​​grooves and fixing holes, which can be used to install the front wheel and the rear wheel.

[0010] Furthermore, the left side plate has a snap-fit ​​groove for fixing a front wheel and a fixing hole for fixing a rear wheel. A belt is fitted between the front wheel and the rear wheel, and the belt is used to drive the fabric to feed.

[0011] Furthermore, a front wheel is mounted on the right-side side panel, with a steel wire at the upper end of the front wheel, the front end of which protrudes above the head. Fabric with bent inner edges can be threaded through the steel wire.

[0012] Furthermore, the right-side side plate has a snap-fit ​​groove for fixing a front wheel and a fixing hole for fixing a rear wheel, with a belt fitted between the front and rear wheels. The belt on the right side drives the fabric feeding.

[0013] Furthermore, the head is provided with a mounting groove, and an auxiliary wheel is installed in the mounting groove. This allows for rapid feeding of ordinary fabrics.

[0014] Furthermore, a pressure roller and a pressure roller belt are provided above the belt; a pressure roller and a pressure roller belt are provided above the right front wheel, with the pressure roller belt located above the steel wire; a pressure roller and a pressure roller belt are also provided above the steel wire above the head; each pressure roller belt is equipped with its own motor. The three motors drive the three pressure roller belts respectively, thereby driving the fabric feeding.

[0015] Furthermore, pressure rollers and pressure roller belts are respectively installed above the left and right side belts, and pressure rollers and pressure roller belts are installed above the auxiliary rollers. Each pressure roller belt is equipped with its own motor. The three motors drive the three pressure roller belts respectively, thereby driving the fabric feeding.

[0016] The beneficial effects of this utility model are: when the left and right forces of the mounting base are unbalanced, it can achieve relative rotation and swing, thereby automatically adjusting the force balance, thus making the fabric feeding stable. It is suitable for a variety of different fabrics and has a wide range of applications. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the feeding device of this utility model in one embodiment.

[0019] Figure 3 for Figure 2 Assembly diagram.

[0020] Figure 4 This is a schematic diagram of the second embodiment of the feeding device of this utility model.

[0021] Figure 5 for Figure 4 A schematic diagram of the rear view structure.

[0022] Figure 6 for Figure 4 A top-view structural diagram.

[0023] Figure 7 for Figure 4 Assembly diagram.

[0024] Figure 8 for Figure 4 A schematic diagram of the application structure.

[0025] Labels and explanations:

[0026] 1. Head, 2. Mounting platform, 3. Tail, 4. Mounting seat, 5. Pivot, 6. Gap, 7. Connecting part, 8. Pivot, 9. Side plate, 10. Snap-fit ​​groove, 11. Fixing hole, 12. Front wheel, 13. Rear wheel, 14. Belt, 15. Steel wire, 16. Mounting groove, 17. Auxiliary wheel, 18. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] See Figure 1 —— Figure 3 The present invention relates to a sewing machine, and its feeding device embodiment one includes: a main body, the main body having a head 1, a mounting platform 2, and a tail 3, a mounting seat 4 mounted on the mounting platform 2, a gap 6 between the mounting seat 4 and the upper end face of the mounting platform 2, and the mounting seat 4 being able to swing left and right relative to the mounting platform 2.

[0029] The mounting base 4 of this utility model is pivotally connected to the main body. Specifically, the front and rear ends of the mounting base 4 have pivot parts 5 respectively, and there is a connecting part 7 between the two pivot parts 5. The pivot part 5 has an outwardly extending pivot 8. Bearings 9 are installed on the head 1 and the tail 3. The pivot 8 is sleeved in the bearing 9, so that the mounting base 4 can achieve the effect of left and right rotation and swing along the pivot 8.

[0030] The mounting base 4 of this utility model has side plates 10 on both sides. The side plates 10 have snap-fit ​​grooves 11 and fixing holes 12. The snap-fit ​​grooves 11 are used to fix the front wheel 3, and the fixing holes 12 are used to fix the rear wheel 14. Figure 2 As shown, the left side plate 10 is equipped with a front wheel 13 and a rear wheel 14, and a belt 15 is fitted between the front wheel 13 and the rear wheel 14. The right side plate 10 is equipped with a front wheel 13, and a steel wire 16 is provided on the upper end of the front wheel 13. The front end of the steel wire 16 protrudes above the head 1.

[0031] like Figure 1 As shown, a pressure roller and a pressure roller belt are provided above the left belt 15, and the pressure roller belt is equipped with a motor; a pressure roller and a pressure roller belt are provided above the right front wheel 13, and the pressure roller belt is equipped with a motor; at the same time, a pressure roller and a pressure roller belt are also provided above the steel wire 16 above the head 1, and the pressure roller belt is equipped with a motor; all three motors are controlled separately by the control board, which will not be described in detail here.

[0032] This embodiment is suitable for fabrics with narrow edges, such as fabrics whose edges are folded inward and then sewn. It is difficult to feed the narrow edge formed by the inward fold using existing belts. In this case, the inward folded part can be threaded onto the steel wire 16 to achieve the positioning of the narrow edge. The fabric outside the narrow edge can be fed normally through the front wheel 13, rear wheel 14, and belt 15 on the left side of the mounting base 4.

[0033] This utility model sewing machine is equipped with multiple motors. If the force on the left and right sides of the mounting base 4 is unbalanced during feeding, the mounting base 4 will automatically swing left and right along the pivot 8 to adjust, thereby achieving force balance and ensuring stable feeding.

[0034] See Figure 4 — Figure 8 The second embodiment of the feeding device of the sewing machine of this utility model includes: a main body, the main body having a head 1, a mounting platform 2, and a tail 3, a mounting seat 4 mounted on the mounting platform 2, a gap 6 between the mounting seat 4 and the upper end face of the mounting platform 2, and the mounting seat 4 being able to swing left and right relative to the mounting platform 2.

[0035] The mounting base 4 of this utility model is pivotally connected to the main body. Specifically, the front and rear ends of the mounting base 4 have pivot parts 5 respectively, and there is a connecting part 7 between the two pivot parts 5. The pivot part 5 has an outwardly extending pivot 8. Bearings 9 are installed on the head 1 and the tail 3. The pivot 8 is sleeved in the bearing 9, so that the mounting base 4 can achieve the effect of left and right rotation and swing along the pivot 8.

[0036] Unlike Embodiment 1, Embodiment 2 has a mounting groove 17 at its head 1, and an auxiliary wheel 18 is installed in the mounting groove 17 to assist in fabric feeding, suitable for feeding large fabrics. Figure 8 As shown, a pressure roller and a pressure roller belt are provided above the left belt 15, and the pressure roller belt is equipped with a motor; a pressure roller and a pressure roller belt are provided above the right belt 15, and the pressure roller belt is equipped with a motor; at the same time, a pressure roller and a pressure roller belt are provided above the auxiliary wheel 18, and the pressure roller belt is also equipped with a motor; all three motors are controlled separately by the control board, which will not be described in detail here.

[0037] like Figure 7 As shown, the left side plate 10 of the mounting base 4 of this utility model is equipped with a front wheel 13 and a rear wheel 14, and a belt 15 is sleeved between the front wheel 13 and the rear wheel 14. The right side plate 10 is equipped with a front wheel 13 and a rear wheel 14, and a belt 15 is sleeved between the front wheel 13 and the rear wheel 14.

[0038] When the pressure on the left and right belts 15 is unbalanced, the mounting base 4 will automatically swing left and right along the pivot 8 to adjust, thereby achieving force balance and ensuring smooth feeding. If there is a difference in the thickness of the fabric, the pressure on the left and right will be unbalanced when the fabric is fed. By swinging the mounting base 4, the thicker side of the fabric rotates downward and the thinner side rotates upward, thereby automatically adjusting the force balance.

[0039] Of course, the above-described embodiments are merely preferred examples of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sewing machine, characterized in that: The device includes a feeding device, which has a main body, a head, a mounting platform, and a tail. A mounting seat is mounted on the mounting platform and is pivotally connected to the main body. There is a swivel gap between the mounting seat and the upper surface of the mounting platform, allowing the mounting seat to swivel left and right relative to the mounting platform.

2. The sewing machine according to claim 1, characterized in that: The mounting base has a pivot portion at the front and rear ends, and the pivot portion has an outwardly extending pivot. Bearings are installed on the head and tail, and the pivot is sleeved in the bearing.

3. A sewing machine according to claim 2, characterized in that: The two pivotal parts are connected by a connecting part.

4. A sewing machine according to claim 2, characterized in that: The mounting base has side plates on both sides, and the side plates are provided with snap-fit ​​grooves and fixing holes.

5. A sewing machine according to claim 4, characterized in that: The left-side side plate has a snap-fit ​​groove for fixing the front wheel and a fixing hole for fixing the rear wheel, with a belt fitted between the front wheel and the rear wheel.

6. A sewing machine according to claim 5, characterized in that: The right-side side plate is equipped with a front wheel, and the upper end of the front wheel is equipped with a steel wire, the front end of which protrudes above the head.

7. A sewing machine according to claim 5, characterized in that: The right-side side plate has a snap-fit ​​groove for fixing the front wheel and a fixing hole for fixing the rear wheel, with a belt fitted between the front wheel and the rear wheel.

8. A sewing machine according to claim 7, characterized in that: The head has a mounting groove, and an auxiliary wheel is installed in the mounting groove.

9. A sewing machine according to claim 6, characterized in that: The belt is equipped with a pressure roller and a pressure roller belt above it; the right front wheel is equipped with a pressure roller and a pressure roller belt above it, with the pressure roller belt located above the steel wire; the steel wire above the head is also equipped with a pressure roller and a pressure roller belt above it; each pressure roller belt is equipped with its own motor.

10. A sewing machine according to claim 8, characterized in that: The left and right belts are equipped with pressure rollers and pressure roller belts above them, and the auxiliary rollers are equipped with pressure rollers and pressure roller belts above them. Each pressure roller belt is equipped with a separate motor.

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