Automatic starting device for quick die change of sewing machine

Abstract

The utility model belongs to the technical field of sewing machines, and particularly relates to a quick die change automatic starting device of a sewing machine, which comprises a base plate, a mounting hole and a limit fixture block, the surface of the base plate is provided with the mounting hole, the side surface of the base plate is connected with the limit fixture block, the side surface of the base plate is embedded with a microswitch, and the surface of the base plate is connected with a base. A push rod is installed on the upper surface of the base, the telescopic end of the push rod is connected with a cross rod, the end of the cross rod is rotationally connected with a clamping hook, and the surface of the clamping hook is rotationally connected with a connecting rod which is rotationally connected to the surface of the base. According to the device, the position of the metal plate is fixed through threaded connection of the threaded column and the nut, the clamping groove and the limiting clamping block can be clamped conveniently through limiting of the limiting baffle on the mold, and therefore the machining efficiency of the device can be improved; and meanwhile, after the clamping hook rotates, the bottom of the clamping hook can fall on the surface of the metal plate, so that scratches can be prevented from being left on the table top in the moving process of the clamping hook after the clamping hook rotates and falls on the table top.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines, and particularly relates to a quick die-changing automatic starting device for a sewing machine. Background Art

[0002] The quick die-changing automatic starting device for a sewing machine is a device aimed at improving the production efficiency of the sewing machine and simplifying the operation process. The quick die-changing automatic starting device usually integrates mechanical, electrical and automatic control technologies to achieve the quick replacement of dies and the automatic starting of sewing operations. When the die needs to be replaced, the operator only needs to perform simple operations (such as pressing a button or pulling a handle), and the device will automatically complete a series of actions such as unlocking, replacing, locking the die and starting the sewing machine.

[0003] When the quick die-changing automatic starting device for a sewing machine is in use, first, the card slot of the die is stuck on the surface of the limit block. At this time, the die can squeeze the microswitch. When the microswitch is squeezed, a circuit is formed and the push rod is controlled to extend. When the push rod extends, it can drive the cross bar to move horizontally. When the cross bar moves horizontally, it can exert a force on the hook. When the hook receives the force, it can rotate under the restriction of the connecting rod. After the hook rotates, it can be stuck in the positioning hole of the die. Then, the moving bracket of the sewing machine can drive the die to move by driving the quick die-changing automatic starting device, so as to facilitate the sewing machine to sew the raw materials in the die sandwich;

[0004] When this device is in use, it is necessary to control the card slot of the die to be aligned with the limit block. Otherwise, the die cannot squeeze the microswitch to form a circuit, thus controlling the limitation of the die. However, it is time-consuming to align the card slot of the die with the limit block, which will reduce the processing efficiency of the sewing machine. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a quick die-changing automatic starting device for a sewing machine, aiming to solve the problem in the prior art that when the existing quick die-changing automatic starting device is in use, it is necessary to control the card slot of the die to be aligned with the limit block. Otherwise, the die cannot squeeze the microswitch to form a circuit, thus controlling the limitation of the die. However, it is time-consuming to align the card slot of the die with the limit block, which will reduce the processing efficiency of the sewing machine.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A quick die change automatic start device for a sewing machine, comprising a substrate, mounting holes, and a limit clamping block. Mounting holes are provided on the surface of the substrate, a limit clamping block is connected to the side surface of the substrate, a microswitch is fitted and installed on the side surface of the substrate, a base is connected to the surface of the substrate, a push rod is installed on the upper surface of the base, a cross bar is connected to the telescopic end of the push rod, a hook is rotatably connected to the end of the cross bar, a connecting rod is rotatably connected to the surface of the hook, and the connecting rod is rotatably connected to the surface of the base;

[0007] Through holes are provided on the surface of the substrate, a metal plate is provided at the bottom side of the substrate, a threaded column is connected to the surface of the metal plate near the through hole, a nut is sleeved on the surface of the threaded column, and a limit baffle is connected to the surface of the metal plate.

[0008] To achieve the installation of the metal plate, as a preferred embodiment of the quick die change automatic start device for a sewing machine of the present utility model, the position of the threaded column corresponds to that of the through hole, the threaded column is slidably connected to the through hole, and the threaded column is threadedly connected to the nut.

[0009] As a preferred embodiment of the quick die change automatic start device for a sewing machine of the present utility model, the substrate comprises a first substrate and a second substrate, a hinge is installed between the first substrate and the second substrate, a vertical plate is connected to the surface of the first substrate, a screw rod passes through the inside of the vertical plate, a limit block is connected to the surface of the screw rod, a connecting block is connected to the surface of the second substrate, a first threaded hole is provided on the surface of the connecting block, and a second threaded hole is provided on the surface of the second substrate.

[0010] To achieve the angle adjustment of the second substrate, as a preferred embodiment of the quick die change automatic start device for a sewing machine of the present utility model, the second substrate forms a rotating structure with the first substrate through the hinge.

[0011] To achieve the position fixation of the first substrate and the second substrate, as a preferred embodiment of the quick die change automatic start device for a sewing machine of the present utility model, the screw rod is slidably connected to the vertical plate, the screw rod is threadedly connected to the first threaded hole, and the screw rod is threadedly connected to the second threaded hole.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] In the present utility model, the position of the metal plate is fixed by the threaded connection between the threaded column and the nut. The limit of the mold by the limit baffle can facilitate the clamping of the card slot and the limit clamping block, thereby improving the processing efficiency of the device; at the same time, after the hook rotates, its bottom can fall on the surface of the metal plate, which can avoid scratches on the table surface during the movement of the hook after it rotates and falls on the table surface.

[0014] In this utility model, the threaded connection between the screw rod and the first threaded hole can fix the position when the first substrate and the second substrate are in the same plane. When the screw rod rotates to the outside of the first threaded hole, the second substrate is pulled. After the second substrate rotates 90°, the threaded connection between the screw rod and the second threaded hole can fix the position when the first substrate and the second substrate are in a vertical state. Thus, the shape of the substrate can be adjusted according to the installation position, improving the practicability of the device in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 is an exploded view of the metal plate connection structure of the present utility model;

[0018] Figure 3 is a bottom view of the die-changing device of the present utility model;

[0019] Figure 4 is a schematic diagram of the structure after the second substrate of the present utility model rotates;

[0020] Figure 5 is a cross-sectional view of the structure after the second substrate of the present utility model rotates;

[0021] Figure 6 is a schematic diagram of the substrate structure of the present utility model.

[0022] In the figure: 1, substrate; 101, first substrate; 102, second substrate; 2, mounting hole; 3, limit block; 4, microswitch; 5, base; 6, push rod; 7, cross bar; 8, hook; 9, connecting rod; 10, through hole; 11, metal plate; 12, threaded post; 13, limit baffle; 14, nut; 15, hinge; 16, vertical plate; 17, screw rod; 18, limit block; 19, connecting block; 20, first threaded hole; 21, second threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-6 , the present utility model provides the following technical solutions: A quick die-changing automatic start device for a sewing machine, including a base plate 1, a mounting hole 2 and a limit block 3. A mounting hole 2 is provided on the surface of the base plate 1, a limit block 3 is connected to the side surface of the base plate 1, a microswitch 4 is fitted and installed on the side surface of the base plate 1, a base 5 is connected to the surface of the base plate 1, a push rod 6 is installed on the upper surface of the base 5, a cross bar 7 is connected to the telescopic end of the push rod 6, a hook 8 is rotatably connected to the end of the cross bar 7, a connecting rod 9 is rotatably connected to the surface of the hook 8, and the connecting rod 9 is rotatably connected to the surface of the base 5;

[0025] A through hole 10 is provided on the surface of the base plate 1, a metal plate 11 is provided on the bottom side of the base plate 1, a threaded column 12 is connected to the surface of the metal plate 11 near the through hole 10, a nut 14 is sleeved on the surface of the threaded column 12, and a limit baffle 13 is connected to the surface of the metal plate 11.

[0026] Preferably: The position of the threaded column 12 corresponds to that of the through hole 10, and the threaded column 12 is slidably connected to the through hole 10.

[0027] Preferably: The threaded column 12 is threadedly connected to the nut 14.

[0028] During specific use, after the threaded column 12 passes through the inside of the through hole 10 from the bottom, the position of the metal plate 11 is fixed by the threaded connection between the threaded column 12 and the nut 14.

[0029] Preferably: The base plate 1 includes a first base plate 101 and a second base plate 102. A hinge 15 is installed between the first base plate 101 and the second base plate 102. A vertical plate 16 is connected to the surface of the first base plate 101. A screw rod 17 passes through the inside of the vertical plate 16. A limit block 18 is connected to the surface of the screw rod 17. A connection block 19 is connected to the surface of the second base plate 102. A first threaded hole 20 is provided on the surface of the connection block 19. A second threaded hole 21 is provided on the surface of the second base plate 102.

[0030] Preferably: The second base plate 102 and the first base plate 101 form a rotating structure through the hinge 15.

[0031] During specific use, when the screw rod 17 moves to the outside position of the first threaded hole 20, the second base plate 102 can be pulled to rotate upward along the central axis of the hinge 15.

[0032] Preferably: The screw rod 17 is slidably connected to the vertical plate 16, the screw rod 17 is threadedly connected to the first threaded hole 20, and the screw rod 17 is threadedly connected to the second threaded hole 21.

[0033] During specific use, the position can be fixed when the first substrate 101 and the second substrate 102 are in the same plane through the threaded connection between the screw 17 and the first threaded hole 20; the position can be fixed when the first substrate 101 and the second substrate 102 are in a vertical state through the threaded connection between the screw 17 and the second threaded hole 21.

[0034] Working principle: When using the quick die change automatic start device of this sewing machine, first, the metal plate 11 drives the threaded post 12 to pass through the inside of the through hole 10 from the bottom. Then, the nut 14 moves to the top of the threaded post 12 and rotates. In this way, the position of the metal plate 11 can be fixed through the threaded connection between the threaded post 12 and the nut 14. Then, drive the die to slide on the surface of the metal plate 11. The limit of the die by the limit baffle 13 can facilitate the clamping of the card slot and the limit block 3. At this time, the die squeezes the microswitch 4. When the microswitch 4 is squeezed, a circuit is formed and it controls the extension of the push rod 6. When the push rod 6 extends, it can drive the cross bar 7 to move horizontally. The horizontal movement of the cross bar 7 can exert a force on the hook 8. The hook 8 can rotate under the restriction of the connecting rod 9 when it is subjected to the force. After the hook 8 rotates, it can be stuck in the positioning hole of the die. At this time, the bottom of the hook 8 can fall on the surface of the metal plate 11 after rotation. In this way, it can be avoided that after the hook 8 rotates and falls on the table surface, scratches will be left on the table surface during the movement of the hook 8. Then, the moving bracket of the sewing machine can drive the die to move by driving the quick die change automatic start device, so that it is convenient for the sewing machine to sew the raw materials in the die sandwich.

[0035] The position of the first substrate 101 and the second substrate 102 can be fixed through the threaded connection between the screw 17 and the first threaded hole 20, so that the first substrate 101 and the second substrate 102 can be in the same plane. When the screw 17 rotates inside the first threaded hole 20, it can move in the direction away from the connecting block 19. When the screw 17 moves to the outside position of the first threaded hole 20, at this time, the second substrate 102 can be pulled. The second substrate 102 can rotate upward along the central axis of the hinge 15 under the pulling force. After the second substrate 102 rotates 90°, the screw 17 moves to the entrance of the second threaded hole 21 and rotates in the reverse direction. The reverse rotation of the screw 17 can rotate into the second threaded hole 21, so that the position can be fixed when the first substrate 101 and the second substrate 102 are in a vertical state, and thus the shape of the substrate 1 can be adjusted according to the installation position.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A quick die - changing automatic start - up device for a sewing machine, comprising a base plate (1), mounting holes (2) and limit clamping blocks (3), characterized in that: The surface of the substrate (1) is provided with mounting holes (2). A limiting block (3) is connected to the side surface of the substrate (1). A microswitch (4) is fitted and installed on the side surface of the substrate (1). A base (5) is connected to the surface of the substrate (1). A push rod (6) is installed on the upper surface of the base (5). The telescopic end of the push rod (6) is connected to a cross bar (7). The end of the cross bar (7) is rotatably connected to a hook (8). A connecting rod (9) is rotatably connected to the surface of the hook (8). The connecting rod (9) is rotatably connected to the surface of the base (s). A through hole (10) is provided on the surface of the substrate (1). A metal plate (11) is arranged at the bottom side of the substrate (1). A threaded column (12) is connected to the surface of the metal plate (11) near the through hole (10). A nut (14) is sleeved on the surface of the threaded column (12). A limiting baffle (13) is connected to the surface of the metal plate (11).

2. The automatic start-up device for rapid die change of a sewing machine according to claim 1, characterized in that: The position of the threaded column (12) corresponds to that of the through hole (10). The threaded column (12) is slidably connected with the through hole (10).

3. The automatic start-up device for rapid die change of a sewing machine according to claim 2, characterized in that: The threaded column (12) is threadedly connected with the nut (14).

4. The automatic starting device for rapid die change of a sewing machine according to claim 1, characterized in that: The substrate (1) includes a first substrate (101) and a second substrate (102). A hinge (15) is installed between the first substrate (101) and the second substrate (102). A vertical plate (16) is connected to the surface of the first substrate (101). A screw rod (17) penetrates through the vertical plate (16). A limiting block (18) is connected to the surface of the screw rod (17). A connecting block (19) is connected to the surface of the second substrate (102). A first threaded hole (20) is provided on the surface of the connecting block (19). A second threaded hole (21) is provided on the surface of the second substrate (102).

5. The automatic start-up device for rapid die change of a sewing machine according to claim 4, characterized in that: The second substrate (102) and the first substrate (101) form a rotating structure through the hinge (15).

6. The automatic start-up device for quick die change of a sewing machine according to claim 5, characterized in that: The screw rod (17) is slidably connected with the vertical plate (16). The screw rod (17) is threadedly connected with the first threaded hole (20). The screw rod (17) is threadedly connected with the second threaded hole (21).

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