Short thread end cutting device of sewing machine

Abstract

The utility model relates to the technical field of sewing machines, and discloses a sewing machine short thread end cutting device which comprises a base, a lower protective shell is fixedly installed on the top of the base, an upper protective shell is movably connected to the top of the lower protective shell, and a support is fixedly installed on the surface of the lower protective shell. The device has the following advantages and effects that when a worker needs to maintain the thread end cutting device in the lower protective shell, the worker pushes the pushing rod to convey the limiting device out of the fixing rod, the adjusting rod withdraws the clamping device and conveys the clamping device out of the clamping groove, and the worker can maintain the thread end cutting device. The upper protective shell is taken down to maintain the internal thread end cutting device, so that a worker can easily maintain the protective device outside the thread end cutting device, and when the maintenance is completed, the worker conveys the upper protective shell to the top of the lower protective shell and stops pushing a pushing rod, and then the thread end cutting device is maintained. The limiting device is conveyed into the fixing rod through the spring reset device.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a short thread end cutting device for sewing machines. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together.

[0003] According to Chinese patent number CN217536347U, a short thread head cutting device for a column-type sewing machine is provided, comprising a base, a sewing device is fixedly connected to the top of the base, a column is fixedly connected to the top of the base, a groove is provided on the top of the column, a top plate is fixedly connected inside the groove, a needle hole is provided on the top of the top plate, a T-shaped groove is provided inside the top plate, the T-shaped groove cuts the needle hole on the top of the top plate horizontally, and a cutter is movably sleeved in the T-shaped groove inside the top plate. The utility model is a short thread head cutting device for a column-type sewing machine. When sewing, the sewing machine needle will enter the needle hole on the top of the top plate. By rotating the knob assembly, the cutter is driven to advance into the inside of the top plate and overlap with the needle hole on the top of the top plate, so that the cutter cuts off the short thread head at the sewing machine needle, so that the processing method for the short thread head after sewing is simpler, and the working efficiency can be effectively improved when the short thread head is processed, thereby avoiding the situation that the short thread head is entangled with the sewing thread on the cloth.

[0004] The above patent has a good effect of effectively improving work efficiency when handling short thread ends, thereby avoiding the situation where the short thread ends are entangled with the sewing thread on the fabric. However, when repairing the thread end cutting device, the staff cannot more easily remove and install the protective device on its surface, which causes the staff to spend a long time at work and reduces the work efficiency of the staff. Utility Model Content

[0005] The utility model aims to provide a short thread end cutting device for a sewing machine, which has the effect of making it easier to disassemble and install the protective device.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a short thread head cutting device for a sewing machine, comprising a base, a lower protective shell is fixedly installed on the top of the base, an upper protective shell is movably connected to the top of the lower protective shell, a bracket is fixedly installed on the surface of the lower protective shell, a mounting tube is fixedly installed on the top of the bracket, a fixing plate is fixedly connected to the surface of the upper protective shell, a fixing rod is fixedly installed on the bottom of the fixing plate, a spring reset device is fixedly installed inside the bracket, a connecting plate is fixedly installed on one side of the spring reset device, a push rod is fixedly installed on the front side of the connecting plate, and a limiting device is fixedly installed on one side of the connecting plate.

[0007] By adopting the above technical solution, the lower protective shell can be better fixed and supported by the base, so that it can work more stably. The upper protective shell can be better fixed and supported by the lower protective shell, so that the upper protective shell can be more stable when working, and the upper protective shell can be prevented from falling during work. The mounting tube can be better fixed by the bracket, so that it will not shake easily during work, and the mounting tube can be more stable when working.

[0008] The utility model is further configured as follows: a push groove is opened on one side of the bracket, and the number of the push grooves is four.

[0009] By adopting the above technical solution, the pushing groove opened on one side of the bracket can make it easier for the staff to push the pushing rod.

[0010] The utility model is further configured as follows: a limiting groove is provided inside the fixing rod, and a connecting frame is fixedly mounted on the surface of the pushing rod.

[0011] By adopting the above technical solution, the limiting groove provided inside the fixing rod can make it easier for the limiting device to limit and fix the fixing rod.

[0012] The utility model is further configured as follows: a support plate is fixedly installed inside the installation tube, and the number of the support plates is eight.

[0013] By adopting the above technical solution, the support plate can be better fixed by the installation tube, so that the support plate can be more stable during operation.

[0014] The utility model is further configured as follows: an adjusting rod is fixedly mounted on one side of the support plate, and a clamping device is fixedly mounted on one end of the adjusting rod.

[0015] By adopting the above technical solution, the adjusting rod can be better fixed by the support plate, so that the adjusting rod can be more stable when working.

[0016] The utility model is further configured as follows: a clamping groove is provided on the surface of the fixing rod, and a fixing device body is fixedly installed on the top of the base.

[0017] By adopting the above technical solution, the clamping groove opened on the surface of the fixing rod can allow the clamping device to better clamp and fix the fixing rod.

[0018] The utility model is further configured as follows: a sewing device is fixedly mounted on the surface of the fixing device body, and a hole is opened on the top of the upper protective shell.

[0019] By adopting the above technical solution, the sewing device can be better fixed by the fixing device body, making it more stable.

[0020] The utility model is further configured as follows: a limiting rod is fixedly installed on the bottom of the upper protective shell, and the number of the limiting rods is several.

[0021] By adopting the above technical solution, the limit rod can be better fixed by the upper protective shell, so that the limit rod can work more stably during operation.

[0022] The utility model is further configured as follows: grooves are provided inside the lower protective shell, and the number of the grooves is several.

[0023] By adopting the above technical solution, the limiting rod at the bottom of the upper protective shell can be easily transferred into the lower protective shell through the groove opened inside the lower protective shell.

[0024] The utility model is further configured as follows: a thread end cutting device is fixedly installed inside the lower protective shell.

[0025] By adopting the above technical solution, the thread end cutting device can be better fixed by the lower protective shell, making it more stable.

[0026] The beneficial effects of the utility model are:

[0027] 1. The utility model, through the arrangement among the base, the lower protective shell, the upper protective shell, the bracket, the mounting tube, the fixing plate, the fixing rod, the spring reset device, the connecting plate, the pushing rod and the limiting device, when the staff needs to repair the thread end cutting device inside the lower protective shell, the staff pushes the pushing rod to transmit the limiting device out of the fixing rod, the adjusting rod retracts the clamping device and transmits it out of the clamping groove, and the upper protective shell is removed to repair the internal thread end cutting device, which allows the staff to easily carry out the protective device outside the thread end cutting device. When the repair is completed, the staff transmits the upper protective shell to the top of the lower protective shell, stops pushing the pushing rod, and transmits the limiting device into the fixing rod through the spring reset device, which can better fix the upper protective shell to the top of the lower protective shell, allowing the staff to easily disassemble and install.

[0028] 2. The utility model, through the arrangement of the pushing groove, the limiting groove, the connecting frame, the supporting plate, the adjusting rod, the clamping device, the clamping groove, the fixing device body, the sewing device, the hole, the limiting rod, the groove and the thread cutting device, when the upper protective shell is transferred to the top of the lower protective shell, it is transferred into the groove through the limiting rod, the upper protective shell and the lower protective shell are aligned, the adjusting rod transfers the clamping device into the clamping groove, and fixes the fixing rod, so that the upper protective shell can be easily installed, and the staff can easily disassemble and repair the thread cutting device when repairing it, which makes it easier for the staff to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0030] Figure 1 It is a schematic diagram of the structure of the utility model;

[0031] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0032] Figure 3 This is a schematic diagram of the internal structure of the bracket and the mounting tube of the utility model;

[0033] Figure 4 It is a schematic diagram of the internal structure of the lower protective shell and the upper protective shell of the utility model.

[0034] In the figure, 1, base; 2, lower protective shell; 3, upper protective shell; 4, bracket; 5, mounting tube; 6, fixing plate; 7, fixing rod; 8, spring return device; 9, connecting plate; 10, pushing rod; 11, limiting device; 12, pushing groove; 13, limiting groove; 14, connecting frame; 15, supporting plate; 16, adjusting rod; 17, clamping device; 18, clamping groove; 19, fixing device body; 20, sewing device; 21, hole; 22, limiting rod; 23, groove; 24, thread cutting device. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Reference Figure 1-4A short thread cutting device for a sewing machine comprises a base 1, a lower protective shell 2 is fixedly installed on the top of the base 1, an upper protective shell 3 is movably connected to the top of the lower protective shell 2, a bracket 4 is fixedly installed on the surface of the lower protective shell 2, a mounting tube 5 is fixedly installed on the top of the bracket 4, a fixing plate 6 is fixedly connected to the surface of the upper protective shell 3, a fixing rod 7 is fixedly installed on the bottom of the fixing plate 6, a spring reset device 8 is fixedly installed inside the bracket 4, a connecting plate 9 is fixedly installed on one side of the spring reset device 8, a pushing rod 10 is fixedly installed on the front of the connecting plate 9, and a limiting device 11 is fixedly installed on one side of the connecting plate 9. The base 1 can better support the lower protective shell 2 so that it can work more stably, and the lower protective shell 2 can be better supported. The upper protective shell 3 is fixedly supported so that the upper protective shell 3 can be more stable during operation and prevent the upper protective shell 3 from falling during operation. The mounting tube can be better fixed through the bracket 4 so that it will not easily shake during operation and the mounting tube 5 can be more stable during operation. A push groove 12 is provided on one side of the bracket 4. The number of the push grooves 12 is four. The push groove 12 provided on one side of the bracket 4 can make it easier for the staff to push the push rod 10. A limiting groove 13 is provided inside the fixing rod 7. A connecting frame 14 is fixedly installed on the surface of the pushing rod 10. The limiting groove 13 provided inside the fixing rod 7 can make it easier for the limiting device 11 to limit and fix the fixing rod 7. 5 is fixedly installed with a support plate 15, and the number of support plates 15 is eight. The support plate 15 can be better fixed by installing the tube 5, so that the support plate 15 can be more stable during work. An adjusting rod 16 is fixedly installed on one side of the support plate 15, and a clamping device 17 is fixedly installed on one end of the adjusting rod 16. The adjusting rod 16 can be better fixed by the support plate 15, so that the adjusting rod 16 can be more stable during work. A clamping groove 18 is provided on the surface of the fixing rod 7. A fixing device body 19 is fixedly installed on the top of the base 1. The clamping groove 18 provided on the surface of the fixing rod 7 allows the clamping device 17 to better clamp and fix the fixing rod 7. A sewing device 20 is fixedly installed on the surface of the fixing device body 19. The upper protective shell 3 A hole 21 is provided on the top, and the sewing device 20 can be better fixed through the fixing device body 19 to make it more stable. A limit rod 22 is fixedly installed on the bottom of the upper protective shell 3, and the number of the limit rods 22 is several. The limit rod 22 can be better fixed through the upper protective shell 3, so that the limit rod 22 can work more stably during operation. A groove 23 is provided inside the lower protective shell 2, and the number of the grooves 23 is several. Through the groove 23 provided inside the lower protective shell 2, the limit rod 22 at the bottom 2 of the upper protective shell can be easily transferred into the lower protective shell 2. A thread end cutting device 24 is fixedly installed inside the lower protective shell 2, and the thread end cutting device 24 can be better fixed through the lower protective shell 2 to make it more stable.

[0037] In the utility model, when the staff needs to repair the thread end cutting device 24 inside the lower protective shell 2, the staff pushes the push rod 10 to transmit the limit device 11 out of the fixing rod 7, the adjusting rod 16 retracts the clamping device 17 and transmits it out of the clamping groove 18, and removes the upper protective shell 3 to repair the thread end cutting device 24 inside. In this way, the staff can easily carry out the protective device outside the thread end cutting device 24. When the maintenance is completed, the staff transmits the upper protective shell 3 to the top of the lower protective shell 2, stops pushing the push rod 10, and resets the limit device 11 through the spring reset device 8. The upper protective shell 3 is transmitted to the top of the lower protective shell 2 through the limit rod 22, and the upper protective shell and the lower protective shell are aligned. The adjusting rod 6 transmits the clamping device 17 into the clamping groove 18 to fix the fixing rod 7, so that the upper protective shell 3 can be easily installed, and the staff can easily disassemble and repair the thread head cutting device 24 when repairing it, which makes it easier for the staff to work.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A short thread cutting device for a sewing machine, comprising a base (1), characterized in that: A lower protective shell (2) is fixedly mounted on the top of the base (1), an upper protective shell (3) is movably connected to the top of the lower protective shell (2), a bracket (4) is fixedly mounted on the surface of the lower protective shell (2), a mounting tube (5) is fixedly mounted on the top of the bracket (4), a fixing plate (6) is fixedly connected to the surface of the upper protective shell (3), a fixing rod (7) is fixedly mounted on the bottom of the fixing plate (6), a spring reset device (8) is fixedly mounted inside the bracket (4), a connecting plate (9) is fixedly mounted on one side of the spring reset device (8), a push rod (10) is fixedly mounted on the front of the connecting plate (9), and a limiting device (11) is fixedly mounted on one side of the connecting plate (9).

2. A sewing machine short thread cutting device according to claim 1, characterized in that: One side of the bracket (4) is provided with a push groove (12), and the number of the push grooves (12) is four.

3. A short thread cutting device for a sewing machine according to claim 2, characterized in that: A limiting groove (13) is provided inside the fixing rod (7), and a connecting frame (14) is fixedly mounted on the surface of the pushing rod (10).

4. A short thread cutting device for a sewing machine according to claim 1, characterized in that: A support plate (15) is fixedly installed inside the installation cylinder (5), and the number of the support plates (15) is eight.

5. A short thread cutting device for a sewing machine according to claim 4, characterized in that: An adjusting rod (16) is fixedly mounted on one side of the support plate (15), and a clamping device (17) is fixedly mounted on one end of the adjusting rod (16).

6. A short thread cutting device for a sewing machine according to claim 1, characterized in that: A clamping groove (18) is provided on the surface of the fixing rod (7), and a fixing device body (19) is fixedly mounted on the top of the base (1).

7. A short thread cutting device for a sewing machine according to claim 6, characterized in that: A sewing device (20) is fixedly mounted on the surface of the fixing device body (19), and a hole (21) is opened on the top of the upper protective shell (3).

8. A short thread cutting device for a sewing machine according to claim 1, characterized in that: A limiting rod (22) is fixedly mounted on the bottom of the upper protective shell (3), and the number of the limiting rods (22) is several.

9. A short thread cutting device for a sewing machine according to claim 1, characterized in that: The lower protective shell (2) is provided with grooves (23) inside, and the number of the grooves (23) is several.

10. The short thread cutting device for a sewing machine according to claim 1, characterized in that: A thread end cutting device (24) is fixedly installed inside the lower protective shell (2).

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