Sewing machine trouser loop pressing and loosening device and sewing machine thereof

Abstract

The invention relates to trouser loop sewing machine equipment, and discloses a trouser loop pressing and loosening device of a sewing machine and the sewing machine thereof.The trouser loop pressing and loosening device of the sewing machine comprises a pressing and loosening installation frame (10), a left pressing supporting frame (11), a right pressing supporting frame (12) and a trouser loop loosening fixing frame (13), and the left pressing supporting frame (11) is installed on the pressing and loosening installation frame (10) in a sliding mode; the right material pressing support frame (12) and the trouser loop loosening fixing frame (13) are installed on the left material pressing support frame (11) and can transversely move on the left material pressing support frame (11), first driving sources (14) are installed on the left material pressing support frame (11) and the right material pressing support frame (12), material pressing seats (15) are installed at the ends of telescopic rods of the first driving sources (14), and the lower ends of the material pressing seats (15) are connected with pressing plates (16) through connecting shafts. The pressing plate is adopted for material pressing, traditional spring material pressing is omitted, and therefore the stability of material pressing is ensured, the pressing plate is easy to install and debug, and the market prospect is good.

Description

Technical Field

[0001] The invention relates to trouser loop sewing machine equipment, in particular to a trouser loop pressing and relaxing device and a sewing machine thereof. Background Art

[0002] At present, the automatic trouser loop machines on the market basically go through the processes of pulling, pressing, loosening, cutting, rolling, feeding and sewing when they are in operation. The trouser loops need to be pressed and relaxed before folding, so that the trouser loops can be easily cut to ensure the stability of the cutting length, and after folding, the trouser loops form a certain margin space, which is convenient for the belt to easily pass through the trouser loops. However, the existing automatic trouser loop machines have obvious defects, that is, they are basically pressed by springs and pressing bases, and the pressing stability will deteriorate as the machine is used for a longer time. For example, the arching device of an automatic trouser loop machine and an automatic trouser loop machine with application number 202022812540.3. Manual adjustment is inconvenient to adjust. With the changes in the requirements for the length of the trouser loops and the changes in the amount of relaxation of the customer, the pressing and relaxing stability will vary, resulting in uneven results after folding. Summary of the invention

[0003] Aiming at the shortcomings of the prior art, the present invention provides a trouser loop pressing and relaxing device for a sewing machine and a sewing machine thereof.

[0004] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0005] A trouser loop pressing and relaxing device for a sewing machine comprises a pressing and relaxing mounting frame, a left pressing and supporting frame, a right pressing and supporting frame and a trouser loop relaxing and fixing frame, wherein the left pressing and supporting frame is slidably mounted on the pressing and relaxing mounting frame, the right pressing and supporting frame and the trouser loop relaxing and fixing frame are both mounted on the left pressing and supporting frame and can both move laterally thereon, a first driving source is mounted on the left pressing and supporting frames and a pressing seat is mounted on the end of the telescopic rod of the first driving source, and a pressing plate is connected to the lower end of the pressing seat through a connecting shaft. The pressing plate of the present invention adopts a pressing plate, cancels the traditional spring pressing, and increases the pressing area, thereby ensuring the stability of the pressing, and the pressing plate is relatively simple to install and debug, and has a good market prospect.

[0006] Preferably, the pressing plate is provided with a first notch and a second notch, and a front positioning fork and a rear positioning fork are fixed on the pressing seat, the front positioning fork extends out of the lower end surface of the pressing plate through the first notch, and the rear positioning fork extends out of the lower end surface of the pressing plate through the second notch. The first notch and the second notch are provided to avoid interference between the pressing plate and the front positioning fork and the rear positioning fork, and the front positioning fork and the rear positioning fork are used to press and position the trouser loops, so that the trouser loops can be easily cut and the cutting length is stable.

[0007] Preferably, a positioning rod is fixed on the pressing seat, and the positioning rod, the front positioning fork and the rear positioning fork form a triangular positioning. When the trouser loop is turned over and folded, the positioning rod limits the trouser loop material at the turned end in one direction, thereby improving the accuracy of sewing the trouser loop.

[0008] Preferably, the right pressing material support frame is installed in front of the left pressing material support frame through an axial screw, and the trouser loop relaxation fixing frame is installed behind the left pressing material support frame through an axial screw.

[0009] Preferably, a trouser loop relaxing and fixing frame is provided with a trouser loop relaxing chute seat, and a longitudinally arranged chute is provided on the trouser loop relaxing chute seat, and a first slider is installed in the chute, and a first connecting rod and a second connecting rod are hinged on the first slider at the same time, and the other end of the first connecting rod is hinged on the left material pressing support frame, and the other end of the second connecting rod is hinged on the right material pressing support frame. The existing trouser loop relaxing and fixing frames are all fixed, so that the lever thereon is fixed, but with the change of the requirements for the length of the trouser loops and the change of the relaxation amount of the customers, the stability of the pressing and relaxing will be different, resulting in uneven effects after rolling and folding. The present invention links the left material pressing support frame, the right material pressing support frame and the trouser loop relaxing and fixing frame through the first connecting rod and the second connecting rod, and the right material pressing support frame drives the trouser loop relaxing and fixing frame to follow and move in proportion through the first connecting rod and the second connecting rod, so as to ensure that the lever on the trouser loop relaxing and fixing frame is always between the left material pressing support frame and the right material pressing support frame.

[0010] Preferably, a waist-shaped hole is provided on the trouser loop loosening and fixing frame, a second driving source is installed on the pressing material loosening and fixing frame, a connecting block is installed on the end of the telescopic rod of the second driving source, the connecting block is connected to the left pressing material supporting frame through a pin shaft, and the end of the pin shaft extends into the waist-shaped hole. Since the left pressing material supporting frame and the trouser loop loosening and fixing frame can form relative movement, the two can be moved together to improve the stability of the movement. In order to avoid the interference between the pin shaft position and the trouser loop loosening and fixing frame, a waist-shaped hole is provided on the trouser loop loosening and fixing frame.

[0011] As a preferred embodiment, the machine further comprises a slide rail fixed on the sewing machine frame, a second slider is mounted on the slide rail, and the second slider is fixedly connected to the right material pressing support frame through a connecting seat. When the left material pressing support frame, the right material pressing support frame and the trouser loop loosening and fixing frame move up and down together, the cooperation between the second slider and the slide rail can improve the stability of the up and down movement of the first three.

[0012] Preferably, a lever is installed on the trouser loop loosening and fixing frame, the top end of the lever is bent to form a bent portion, a third driving source is installed on the trouser loop loosening and fixing frame, and the end of the telescopic rod of the third driving source is fixedly connected to the bent portion. The connection between the third driving source and the lever is simpler and more convenient, reducing intermediate connecting parts, improving assembly efficiency and later maintenance costs.

[0013] Preferably, the lower end of the shifting rod is bent to form a shifting portion, a waste blocking rod is fixed on the shifting rod, and the front end of the waste blocking rod is bent vertically downward to form a blocking portion, and the blocking portion is perpendicular to the shifting portion.

[0014] A sewing machine comprises a trouser loop pressing and relaxing device for the sewing machine.

[0015] The present invention has significant technical effects due to the adoption of the above technical solution:

[0016] The present invention adopts a pressing plate for pressing materials, and eliminates the traditional spring pressing material. The pressing plate increases the pressing area, thereby ensuring the stability of the pressing material. The pressing plate is relatively simple to install and debug, and has a good market prospect.

[0017] The lever can move with the trousers to ensure that the trouser loops are rolled and folded neatly, thereby improving the stability of the trouser loops when they are relaxed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of the front end surface of the trouser loop pressing and relaxing device of a sewing machine.

[0019] Figure 2 The utility model is a structural schematic diagram of the rear end face of the trouser loop pressing and relaxing device of a sewing machine.

[0020] Figure 3 It is a left material pressing support frame, a right material pressing support frame and a material pressing seat and upper parts thereof.

[0021] Figure 4 It is a schematic diagram of the structure of two pressure plates.

[0022] The parts indicated by the numbers in the above drawings are as follows:

[0023] 10—pressing and relaxing mounting frame, 11—left pressing and supporting frame, 12—right pressing and supporting frame, 13—trouser loop relaxing and fixing frame, 14—first driving source, 15—pressing seat, 16—pressing plate, 17—front positioning fork, 18—rear positioning fork, 19—positioning rod, 20—trouser loop relaxing and sliding slot seat, 21—first slider, 22—first connecting rod, 23—second connecting rod, 24—second driving source, 25—connecting block, 26—pin shaft, 27—slide rail, 28—second slider, 29—connecting seat, 30—shifting rod, 31—third driving source, 32—waste blocking rod, 33—track, 34—linear slider, 35—limiting piece

[0024] 111—Left support rod

[0025] 121—Right support rod

[0026] 131—Waist-shaped hole

[0027] 161 - first gap, 162 - second gap

[0028] 201—Chute

[0029] 301-bending part, 302-shifting part

[0030] 321—Block DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 The present invention is further described in detail with examples.

[0032] Example 1

[0033] A trouser loop pressing and relaxing device for a sewing machine comprises a pressing and relaxing mounting frame 10, a left pressing and supporting frame 11, a right pressing and supporting frame 12 and a trouser loop relaxing fixing frame 13. The left pressing and supporting frame 11 is slidably mounted on the pressing and relaxing mounting frame 10. A track 33 is screwed on the pressing and relaxing mounting frame 10. A linear slider 34 is slidably mounted on the track 33. The left pressing and supporting frame 11 is fixed on the linear slider 34. The left pressing and supporting frame 11 can move longitudinally along the extension direction of the track 33. The right material pressing support frame 12 and the trouser loop relaxing fixing frame 13 are both installed on the left material pressing support frame 11 and can move laterally thereon. The left material pressing support frame 11 and the right material pressing support frame 12 are both installed with a first driving source 14. In this embodiment, the first driving source 14 is a cylinder. A material pressing seat 15 is installed at the end of the telescopic rod of the first driving source 14. The lower end of the material pressing seat 15 is connected to a pressing plate 16 through a connecting shaft. The pressing plate 16 increases the area of ​​the material pressing and will not deviate due to excessive frequency of material pressing. The pressing plate 16 replaces the traditional spring and improves the stability of the material pressing.

[0034] The pressing plate 16 is provided with a first notch 161 and a second notch 162, and a front positioning fork 17 and a rear positioning fork 18 are fixed to the material pressing seat 15. The front positioning fork 17 extends out of the lower end surface of the pressing plate 16 through the first notch 161, and the rear positioning fork 18 extends out of the lower end surface of the pressing plate 16 through the second notch 162. The first notch 161 and the second notch 162 prevent the front positioning fork 17 and the rear positioning fork 18 from interfering with the pressing plate 16.

[0035] A positioning rod 19 is fixed on the material pressing seat 15, and the positioning rod 19, the front positioning fork 17 and the rear positioning fork 18 form a triangular positioning. When the trouser loop is turned over and folded, the positioning rod 19 limits the trouser loop material at the turned end in one direction, thereby improving the accuracy of the trouser loop sewing.

[0036] The right material pressing support frame 12 is installed in front of the left material pressing support frame 11 through an axial screw, and the trouser loop loosening fixing frame 13 is installed behind the left material pressing support frame 11 through an axial screw.

[0037] A trouser loop relaxing slide seat 20 is installed on the trouser loop relaxing slide seat 13, and a longitudinally arranged slide slot 201 is provided on the trouser loop relaxing slide seat 20, and the slide slot 201 is a rectangular through hole. A first slider 21 is installed in the slide slot 201, and a first connecting rod 22 and a second connecting rod 23 are hinged on the first slider 21 at the same time. The first slider 21, the first connecting rod 22 and the second connecting rod 23 are connected together through an axis, and a limiting plate 35 is installed at the rear end of the axis. The limiting plate 35 limits the first slider 21 on the slide seat 20, and the other end of the first connecting rod 22 is hinged on the left material pressing support frame 11, and the other end of the second connecting rod 23 is hinged on the right material pressing support frame 12. The right material pressing support frame 12 can drive the trouser loop relaxing and fixing frame 13 to be linked through the first connecting rod 22 and the second connecting rod 23.

[0038] A waist-shaped hole 131 is provided on the trouser loop relaxing and fixing frame 13, and a second driving source 24 is installed on the pressing and relaxing mounting frame 10. The second driving source 24 is also a cylinder. A connecting block 25 is installed at the end of the telescopic rod of the second driving source 24. The connecting block 25 is connected to the left pressing support frame 11 through a pin shaft 26. The end of the pin shaft 26 extends into the waist-shaped hole 131. The waist-shaped hole 131 prevents the pin shaft 26 from interfering with the trouser loop relaxing and fixing frame 13, and the trouser loop relaxing and fixing frame 13 can fit more closely on the left pressing support frame 11.

[0039] The sewing machine trouser loop pressing and relaxing device also includes a slide rail 27 fixed on the sewing machine frame, on which a second slider 28 is installed. The second slider 28 is fixedly connected to the right pressing support frame 12 through a connecting seat 29, so that the right pressing support frame 12 has better stability when moving longitudinally.

[0040] A lever 30 is installed on the trouser loop loosening and fixing frame 13, and the top end of the lever 30 is bent to form a bending portion 301. A third driving source 31 is installed on the trouser loop loosening and fixing frame 13, and the third driving source 31 is also a cylinder. The end of the telescopic rod of the third driving source 31 is fixedly connected to the bending portion 301.

[0041] Example 2

[0042] The features of the embodiment 2 are basically the same as those of the embodiment 1, except that the lower end of the lever 30 is bent to form a lever portion 302, the lever portion 302 is arranged between the left support rod 111 of the left material pressing support frame 11 and the right support rod 121 of the right material pressing support frame 12, a waste material blocking rod 32 is fixed to the lever 30, the front end of the waste material blocking rod 32 is vertically bent downward to form a blocking portion 321, and the blocking portion 321 is perpendicular to the lever portion 302. The waste is blocked by the waste material blocking rod 32 and falls into the waste material box.

[0043] Example 3

[0044] A sewing machine, comprising a trouser loop pressing and relaxing device of embodiment 1 or 2.

Claims

1. A trouser loop pressing and relaxing device for a sewing machine, comprising a pressing and relaxing mounting frame (10), a left pressing support frame (11), a right pressing support frame (12) and a trouser loop relaxing fixing frame (13), wherein the left pressing support frame (11) is slidably mounted on the pressing and relaxing mounting frame (10), the right pressing support frame (12) and the trouser loop relaxing fixing frame (13) are both mounted on the left pressing support frame (11) and can move laterally thereon, characterized in that: A first driving source (14) is installed on both the left material pressing support frame (11) and the right material pressing support frame (12); a material pressing seat (15) is installed at the end of the telescopic rod of the first driving source (14); and a pressing plate (16) is connected to the lower end of the material pressing seat (15) via a connecting shaft.

2. A trouser loop pressing and relaxing device for a sewing machine according to claim 1, characterized in that: The pressing plate (16) is provided with a first notch (161) and a second notch (162); a front positioning fork (17) and a rear positioning fork (18) are fixed to the material pressing seat (15); the front positioning fork (17) extends out of the lower end surface of the pressing plate (16) through the first notch (161); and the rear positioning fork (18) extends out of the lower end surface of the pressing plate (16) through the second notch (162).

3. A trouser loop pressing and relaxing device for a sewing machine according to claim 2, characterized in that: A positioning rod (19) is fixed on the material pressing seat (15), and the positioning rod (19), the front positioning fork (17) and the rear positioning fork (18) form a triangular positioning.

4. A trouser loop pressing and relaxing device for a sewing machine according to claim 1, characterized in that: The right material pressing support frame (12) is installed in front of the left material pressing support frame (11) through an axial screw, and the trouser loop loosening fixing frame (13) is installed at the rear of the left material pressing support frame (11) through an axial screw.

5. A trouser loop pressing and relaxing device for a sewing machine according to claim 1, characterized in that: A trouser loop relaxing slide groove seat (20) is installed on the trouser loop relaxing fixing frame (13), and a longitudinally arranged slide groove (201) is provided on the trouser loop relaxing slide groove seat (20), and a first sliding block (21) is installed in the slide groove (201), and a first connecting rod (22) and a second connecting rod (23) are hingedly connected to the first sliding block (21), and the other end of the first connecting rod (22) is hingedly connected to the left material pressing support frame (11), and the other end of the second connecting rod (23) is hingedly connected to the right material pressing support frame (12).

6. A trouser loop pressing and relaxing device for a sewing machine according to claim 1, characterized in that: A waist-shaped hole (131) is provided on the trouser loop loosening fixing frame (13), a second driving source (24) is installed on the pressing material loosening mounting frame (10), a connecting block (25) is installed at the end of the telescopic rod of the second driving source (24), the connecting block (25) is connected to the left pressing material supporting frame (11) through a pin shaft (26), and the end of the pin shaft (26) extends into the waist-shaped hole (131).

7. A trouser loop pressing and relaxing device for a sewing machine according to claim 1, characterized in that: It also comprises a slide rail (27) fixed on the sewing machine frame, a second slide block (28) is mounted on the slide rail (27), and the second slide block (28) is fixedly connected to the right material pressing support frame (12) through a connecting seat (29).

8. The trouser loop pressing and relaxing device for a sewing machine according to claim 1, characterized in that: A lever (30) is mounted on the trouser loop loosening and fixing frame (13), the top end of the lever (30) is bent to form a bent portion (301), a third driving source (31) is mounted on the trouser loop loosening and fixing frame (13), and the end of the telescopic rod of the third driving source (31) is fixedly connected to the bent portion (301).

9. A trouser loop pressing and relaxing device for a sewing machine according to claim 8, characterized in that: The lower end of the shifting rod (30) is bent to form a shifting portion (302), a waste material blocking rod (32) is fixed on the shifting rod (30), the front end of the waste material blocking rod (32) is bent vertically downward to form a blocking portion (321), and the blocking portion (321) is perpendicular to the shifting portion (302).

10. A sewing machine, characterized in that: The invention comprises a trouser loop pressing and relaxing device for a sewing machine as described in any one of claims 1 to 9.

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