Device for automatically adjusting embroidery thread tightness of embroidery machine and embroidery machine

Abstract

The utility model discloses a device for automatically adjusting the tightness of embroidery threads of an embroidery machine, and aims to provide a device which can automatically adjust the pressing force of the embroidery threads as required and effectively improve the tightness adjustment accuracy and consistency of the embroidery threads so as to improve the embroidery quality and reduce the labor cost. The automatic control line pressure equipment of the embroidery machine and the embroidery machine are suitable for the use requirements of the current multi-station embroidery machine. The wire pressing device comprises a wire pressing frame and a wire pressing device arranged on the wire pressing frame, the wire pressing device comprises an elastic element, a wire pressing face and a wire pressing piece, and the wire pressing piece abuts against the wire pressing face under the action of the elastic element; a pressing part; and the pressure driving mechanism is automatically controlled to drive the wire pressing frame to move, so that the wire pressing device moves towards the top pressing part and is matched with the top pressing part to compress the elastic element, and the pressing force between the wire pressing sheet of the wire pressing device and the wire pressing surface is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery machines, in particular to a device for automatically adjusting the tightness of embroidery threads of an embroidery machine and the embroidery machine. Background Art

[0002] With the development of embroidery machines, the number of heads has continued to increase. Currently, multi-station embroidery machines feature dozens or even hundreds of heads, arranged in a row. Each head includes a needle bar holder, which holds a row of needles. The thread threading the needles in an embroidery machine must maintain the appropriate tension—neither too tight nor too loose. If the thread is too tight, it will pull the fabric loose during the embroidery process, even creating holes and affecting the quality of the embroidery. If the thread is too loose, the embroidery pattern will become loose, seriously reducing the quality of the embroidery.

[0003] In order to solve the above problems, the current embroidery machine uses a thread presser on the needle bar frame. Each embroidery needle corresponds to a thread presser. The thread presser includes a thread presser knob. The embroidery thread corresponding to the embroidery needle first passes through the corresponding thread presser and then passes through the corresponding embroidery needle. The current thread presser is adjusted by the operator manually rotating the thread presser knob to adjust the pressing force of the thread presser on the embroidery thread, thereby adjusting the tightness of the embroidery thread. The current embroidery machine uses a manual thread presser to manually adjust the tightness of the embroidery thread. Although it can solve the problem of embroidery thread tightness to a certain extent, it has the following shortcomings:

[0004] The tightness of the embroidery thread depends on manual adjustment by the operator, but manual adjustment has the problems of low adjustment efficiency, poor consistency of the embroidery thread tightness adjustment, and the inability to guarantee the quality of the embroidery product; there is also the problem of high labor costs.

[0005] On the other hand, the use of a thread crimper to manually adjust the tightness of the embroidery thread is suitable for use in traditional embroidery machines with fewer heads (3-6 heads). Traditional embroidery machines have fewer heads and fewer thread crimpers, and operators can manually adjust the tightness of the embroidery thread to adapt to the production rhythm. However, with the development of embroidery machines, there are dozens or even hundreds of heads in multi-station embroidery machines, and hundreds or even thousands of embroidery needles (the number of thread crimpers is the same as that of embroidery needles). In this case, manually adjusting the tightness of the embroidery thread is simply unable to adapt to the production rhythm. Therefore, the current method of manually adjusting the tightness of the embroidery thread with a thread crimper is becoming increasingly unable to meet the usage needs of current multi-station embroidery machines. Utility Model Content

[0006] The purpose of the utility model is to provide an embroidery machine automatic control thread pressure device and an embroidery machine that can automatically adjust the pressing force of the embroidery thread according to needs, effectively improve the accuracy and consistency of the tightness adjustment of each embroidery thread, thereby improving the quality of embroidery products, reducing labor costs, and adapting to the use requirements of current multi-station embroidery machines.

[0007] The technical solution of the utility model is:

[0008] A device for automatically adjusting the tightness of embroidery thread of an embroidery machine, comprising:

[0009] The wire pressing device includes a wire pressing frame and a wire pressing device arranged on the wire pressing frame. The wire pressing device includes an elastic element, a wire pressing surface and a wire pressing piece. The wire pressing piece is pressed against the wire pressing surface under the action of the elastic element.

[0010] Top pressure part;

[0011] The automatic thread pressure drive mechanism drives the thread presser, causing the thread presser to move toward the pressing portion and, in conjunction with the pressing portion, compress the elastic element to adjust the pressure between the thread presser's thread pressing plate and the thread pressing surface. This allows operators to accurately control the thread presser's travel using the automatic thread pressure drive mechanism, thereby precisely controlling the compression of the elastic element and, consequently, the pressure between the thread pressing plate and the thread pressing surface. This effectively improves the accuracy and consistency of thread tension adjustment across the embroidery machine, thereby enhancing the quality of embroidery products. Furthermore, since manual thread tension adjustment is eliminated, the system is well suited to the needs and production schedules of current multi-station embroidery machines and reduces labor costs.

[0012] Preferably, the invention further comprises a mounting bracket, a wire pressing frame of the wire pressing device is slidably arranged on the mounting bracket, an automatic control wire pressure driving mechanism is arranged on the mounting bracket, the pressing portion corresponds to the wire pressing device one by one, and the pressing portion is fixedly arranged;

[0013] The same wire crimping device has multiple wire crimpers, and each wire crimper is distributed side by side on the wire crimping frame;

[0014] The mounting bracket moves synchronously with the needle bar frame of the embroidery machine so that the pressing portion corresponds to each thread presser of the thread pressing device in sequence;

[0015] The automatic control thread pressure drive mechanism drives the thread pressing frame to move, causing the thread presser to move toward the pressing portion and cooperate with the pressing portion to compress the elastic element of the corresponding thread presser to adjust the pressing force between the corresponding thread pressing piece and the thread pressing surface. The specific operation of the embroidery thread tension device of this solution is as follows. The following describes the working process of an embroidery needle of an embroidery machine as an example.

[0016] When the needle bar frame translates, placing the embroidery needle in the working position, the mounting bracket and the needle bar frame move synchronously, causing the thread presser corresponding to the embroidery needle to move to the top pressing portion. Next, the automatic control thread pressure drive mechanism drives the thread presser frame to move toward the top pressing portion and, in conjunction with the top pressing portion, compress the elastic element corresponding to the thread presser. The automatic control thread pressure drive mechanism automatically drives and accurately controls the movement of the thread presser frame, thereby accurately controlling the compression of the elastic element and thereby precisely adjusting the pressing force between the thread presser and the thread pressing surface. This effectively improves the accuracy and consistency of thread tension adjustment on the embroidery machine, thereby enhancing the quality of the embroidery product. Furthermore, since manual thread tension adjustment is unnecessary, the system is well suited to the needs and production schedule of current multi-station embroidery machines and reduces labor costs.

[0017] On the other hand, the needle bar frame of the existing embroidery machine is generally provided with a row of embroidery needles. The embroidery machine drives the needle bar frame to move horizontally through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to embroidery threads of different colors); and the mounting bracket of the present scheme moves synchronously with the needle bar frame of the embroidery machine, so that the top pressing part corresponds to each thread presser of the thread pressing device in turn. Based on this, each thread presser of each thread pressing device only needs one automatic control thread pressure driving mechanism, and there is no need for each thread presser to correspond to an automatic control thread pressure driving mechanism, which can effectively reduce the number of automatic control thread pressure driving mechanisms, thereby reducing the production cost.

[0018] As an advantage, it also includes:

[0019] A first track parallel to the moving direction of the needle bar frame, the mounting bracket moves horizontally along the first track;

[0020] The first translation drive device drives the mounting bracket to move synchronously with the needle bar frame along the first track. In this way, the positions of the first track and the mounting bracket can be arranged according to actual needs, and then the first translation drive device drives the mounting bracket to move synchronously with the needle bar frame.

[0021] Preferably, there are multiple wire pressing devices, the mounting brackets correspond to the wire pressing devices one by one, and the wire pressing frames of the wire pressing devices are slidably arranged on the corresponding mounting brackets;

[0022] Each mounting bracket shares a first translation drive device, which drives each mounting bracket to move synchronously. This eliminates the need for a corresponding first translation drive device for each mounting bracket, effectively reducing the number of first translation drives and further reducing manufacturing costs.

[0023] Alternatively, the mounting brackets correspond to the first translation drive devices one by one, and the first translation drive devices drive the corresponding mounting brackets to move, thereby facilitating the independent layout and application of each mounting bracket and the first translation drive device.

[0024] Preferably, the device further comprises a fixed mounting bracket, and a wire pressing frame of the wire pressing device is slidably arranged on the mounting bracket;

[0025] The same wire crimping device has multiple wire crimpers, and each wire crimper is distributed side by side on the wire crimping frame;

[0026] The pressing part corresponds to the thread pressing device one by one, and the pressing part moves synchronously with the needle bar frame of the embroidery machine so that the pressing part corresponds to each thread presser of the thread pressing device in turn;

[0027] The automatic control thread pressure drive mechanism drives the thread pressing frame to move, causing the thread presser to move toward the pressing portion and cooperate with the pressing portion to compress the elastic element of the corresponding thread presser to adjust the pressing force between the corresponding thread pressing piece and the thread pressing surface. The specific operation of the embroidery thread tension device of this solution is as follows. The following describes the working process of an embroidery needle of an embroidery machine as an example.

[0028] When the needle bar frame translates, placing the embroidery needle in the working position, the pressing portion moves synchronously with the needle bar frame, translating the pressing portion to the thread presser corresponding to the embroidery needle. Next, the automatic thread pressure drive mechanism drives the thread presser frame to move, causing the thread presser to move toward the pressing portion and cooperate with the pressing portion to compress the elastic element of the corresponding thread presser. The automatic thread pressure drive mechanism automatically drives and accurately controls the movement of the thread presser frame, thereby accurately controlling the compression of the elastic element and thus precisely adjusting the pressing force between the thread presser and the thread pressing surface. This effectively improves the accuracy and consistency of thread tension adjustment on the embroidery machine, thereby improving the quality of the embroidery product. Furthermore, since manual thread tension adjustment is no longer necessary, the system is well suited to the needs and production schedule of current multi-station embroidery machines and reduces labor costs.

[0029] On the other hand, a row of embroidery needles are generally arranged on the needle bar frame of the existing embroidery machines. The embroidery machine drives the needle bar frame to move horizontally through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to embroidery threads of different colors); and the top pressing part of the present scheme moves synchronously with the needle bar frame of the embroidery machine, so that the top pressing part corresponds to each thread presser of the thread pressing device in turn. Based on this, each thread presser of each thread pressing device only needs one automatic control thread pressure driving mechanism, and there is no need for each thread presser to correspond to an automatic control thread pressure driving mechanism, which can effectively reduce the number of automatic control thread pressure driving mechanisms, thereby reducing the production cost.

[0030] As an advantage, it also includes:

[0031] A second track is parallel to the moving direction of the needle bar frame, and the pressing part moves horizontally along the second track;

[0032] The second translation drive device drives the pressing part to move synchronously with the needle bar frame along the second track. In this way, the positions of the second track and the pressing part can be arranged according to actual needs, and then the second translation drive device drives the pressing part to move synchronously with the needle bar frame.

[0033] Preferably, there are multiple wire pressing devices, the mounting brackets correspond to the wire pressing devices one by one, and the wire pressing frames of the wire pressing devices are slidably arranged on the corresponding mounting brackets;

[0034] Each pressing portion shares a second translation drive device, which drives each pressing portion to move synchronously. In this way, there is no need for each pressing portion to correspond to a second translation drive device, which can effectively reduce the number of second translation drives, thereby further reducing the manufacturing cost.

[0035] Alternatively, the pressing parts correspond to the second translation driving devices one by one, and the second translation driving devices drive the corresponding pressing parts to move. In this way, the independent layout application of each pressing part and the second translation driving device is convenient.

[0036] Preferably, the automatic control line pressure driving mechanism includes:

[0037] A sliding seat is slidably arranged, and the wire pressing frame is arranged on the sliding seat;

[0038] The power component drives the sliding seat to slide.

[0039] Preferably, the automatic control line pressure drive mechanism further comprises a transmission mechanism, and the transmission mechanism corresponds to the sliding seat one by one;

[0040] The transmission mechanism corresponds to the power component one by one, and the power component drives the corresponding sliding seat to move through the transmission mechanism; this facilitates the independent layout and application of each wire pressing device and power component;

[0041] Alternatively, multiple transmission mechanisms share a power component, which drives each sliding seat to move synchronously through the transmission mechanism. In this way, there is no need for each wire pressing device to correspond to a power component, which can effectively reduce the number of power components and further reduce production costs.

[0042] Preferably, the transmission mechanism includes:

[0043] The swing rod is driven by a power component to rotate;

[0044] A connecting rod has one end hingedly connected to the rocker arm and the other end hingedly connected to the sliding seat.

[0045] Preferably, the transmission mechanism includes:

[0046] The power component drives the screw rod to rotate, the sliding direction of the screw rod is parallel to that of the sliding seat, and the screw rod and the sliding seat are connected by bolts.

[0047] Preferably, the transmission mechanism includes a synchronous belt transmission mechanism, the power component drives the synchronous belt transmission mechanism to transmit, the transmission direction of the synchronous belt transmission mechanism is parallel to the sliding direction of the sliding seat, and the synchronous belt of the synchronous belt transmission mechanism is connected to the sliding seat through a connecting member.

[0048] Preferably, the transmission mechanism includes a gear and a rack, the gear and the rack are meshed, the power component drives the gear to rotate, the sliding direction of the rack is parallel to the sliding direction of the sliding seat, and the rack is fixedly connected to the sliding seat.

[0049] Preferably, the transmission mechanism includes a shift fork, the power component drives the shift fork to rotate, the shift fork is provided with a waist-shaped hole, the sliding seat is provided with a pin rod that cooperates with the waist-shaped hole, and the pin rod is inserted into the waist-shaped hole.

[0050] Preferably, the wire crimping device further comprises a wire crimping seat and a guide rod, the guide rod being fixed on the wire crimping frame, and the wire crimping piece sliding along the guide rod;

[0051] The crimping seat is fixed on the crimping frame, and the side of the crimping seat facing the crimping sheet constitutes the crimping surface;

[0052] Alternatively, the thread pressing seat can slide along the guide rod, and the thread pressing piece and the thread pressing seat slide along the guide rod under the action of the elastic element, so that the thread pressing seat is pressed against the thread pressing frame, and the side of the thread pressing seat facing the thread pressing piece constitutes the thread pressing surface. In this way, the embroidery thread is pressed tightly by the thread pressing piece and the thread pressing seat. The thread pressing seat can be manufactured separately, which is convenient for improving the smoothness of the thread pressing surface that contacts the embroidery thread.

[0053] Preferably, a limit block is provided at the end of the guide rod, and a sliding component is also provided on the guide rod. The limit block, sliding component and wire pressing piece are distributed in sequence along the axial direction of the guide rod, and the elastic element is located between the sliding component and the wire pressing piece.

[0054] Preferably, the wire crimping device further comprises a guide rod fixed to the wire crimping frame, the wire crimping sheet slides along the guide rod, and the side of the wire crimping frame facing the wire crimping sheet constitutes the wire crimping surface. In this way, the wire crimping seat can be omitted, reducing production costs.

[0055] Preferably, a detection sensor is further included, which detects the pressing force between the wire pressing piece and the wire pressing surface of each wire pressing device in the wire pressing device. The detection sensor corresponds to the wire pressing device one by one, and the detection sensor is arranged between the wire pressing seat and the wire pressing frame of the corresponding wire pressing device, or the detection sensor is arranged between the wire pressing piece and the elastic element of the corresponding wire pressing device.

[0056] Preferably, a detection sensor is further included, which detects the pressing force between the thread pressing piece and the thread pressing surface of each thread pressing device in the thread pressing device. In this way, in the process of automatically controlling the thread pressure driving mechanism to adjust the pressing force between the thread pressing piece and the thread pressing surface, the pressing force between the thread pressing piece and the thread pressing surface can be detected in real time by the detection sensor. When the detection sensor detects that the pressing force between the thread pressing piece and the thread pressing surface reaches a set value, the automatic control line pressure driving mechanism stops driving the thread pressing frame, thereby accurately adjusting the pressing force between the thread pressing piece and the thread pressing surface to ensure the consistency of the tightness of each embroidery thread; effectively avoiding the problem of affecting the adjustment accuracy and consistency of the tightness of the embroidery thread due to the processing precision problem of the elastic element.

[0057] Preferably, the device further comprises a support, the pressing portion is mounted on the support, and the detection sensor is disposed between the support and the pressing portion. In this way, each wire crimping device only requires one detection sensor to detect the pressing force between the wire crimping sheet and the wire crimping surface of each wire crimping device in the wire crimping device, effectively reducing the number of detection sensors and lowering costs.

[0058] An embroidery machine comprises a device for automatically adjusting the tightness of embroidery threads of the embroidery machine.

[0059] The beneficial effects of the utility model are:

[0060] First, it can automatically adjust the pressing force of the embroidery thread as needed, effectively improving the accuracy and consistency of adjusting the tightness of each embroidery thread, thereby improving the quality of the embroidery product.

[0061] Secondly, it can automatically adjust the pressing force of the embroidery thread according to needs, so there is no need to manually adjust the tightness of the embroidery thread. It can well adapt to the use needs of current multi-station embroidery machines, adapt to the production rhythm of current multi-station embroidery machines, and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 The utility model is a structural schematic diagram of a mounting bracket of an embroidery thread tension automatic adjusting device of an embroidery machine and a needle bar frame of the embroidery machine moving synchronously.

[0063] Figure 2 The utility model is a partial top view of a mounting bracket of an embroidery thread tension automatic adjusting device of an embroidery machine and a needle bar frame of the embroidery machine moving synchronously.

[0064] Figure 3 The utility model is a partial three-dimensional structural diagram of a mounting bracket of an embroidery thread tension adjustment device of an embroidery machine and a needle bar frame of the embroidery machine moving synchronously.

[0065] Figure 4The utility model is a structural schematic diagram of a device for automatically adjusting the tightness of embroidery threads of an embroidery machine, in which a pressing part and a needle bar frame of the embroidery machine move synchronously.

[0066] Figure 5 The utility model is a partial top view of a device for automatically adjusting the tightness of embroidery threads of an embroidery machine, in which a pressing portion and a needle bar frame of the embroidery machine move synchronously.

[0067] Figure 6 The utility model is a partial three-dimensional structural schematic diagram of a device for automatically adjusting the tightness of embroidery threads of an embroidery machine, in which a pressing part and a needle bar frame of the embroidery machine move synchronously.

[0068] In the picture:

[0069] Mounting bracket 1, guide rail 1.1;

[0070] Automatic control line pressure drive mechanism 2, power component 2.1, sliding seat 2.2, transmission mechanism 2.3, rocker 2.31, connecting rod 2.32, screw 2.33;

[0071] Wire crimping device 3, wire crimping frame 3.1, wire crimping device 3.2, wire crimping piece 3.21, wire crimping surface 3.22, elastic element 3.23, sliding component 3.24, limit block 3.25, guide rod 3.26, wire crimping seat 3.27;

[0072] Top pressing part 4;

[0073] Embroidery thread 5;

[0074] Support 6;

[0075] A first translation drive device 7;

[0076] Detection sensor 8;

[0077] First track 9;

[0078] Translation bracket 10;

[0079] Mounting seat 11;

[0080] Second track 12;

[0081] The second translation drive device 13 . DETAILED DESCRIPTION

[0082] Specific embodiment 1, as Figure 1 、 Figure 4 As shown, a device for automatically adjusting the tightness of embroidery thread of an embroidery machine includes a thread pressing device 3, a pressing portion 4 and an automatic thread pressure control driving mechanism 2.

[0083] The wire crimping device 3 includes a wire crimping frame 3.1 and a wire crimper 3.2. The wire crimper 3.2 is mounted on the wire crimping frame 3.1. The wire crimper 3.2 includes an elastic element 3.23, a wire crimping surface 3.22, and a wire crimping sheet 3.21. The wire crimping sheet 3.21 is pressed against the wire crimping surface 3.22 by the action of the elastic element 3.23. The elastic element 3.23 is a spring, an elastic sheet, or an elastic rubber member. In this embodiment, the elastic element 3.23 is a spring.

[0084] The automatic thread pressure drive mechanism 2 drives the thread crimping frame 3.1, causing the thread crimper 3.2 to move toward the pressing portion 4. This compresses the elastic element 3.23, adjusting the pressure between the thread crimping plate 3.21 and the thread pressing surface 3.22 of the thread crimper 3.2. The greater the compression of the elastic element 3.23, the greater the pressure between the thread crimping plate 3.21 and the thread pressing surface 3.22. The embroidery thread 5 of the embroidery machine passes between the thread crimping plate 3.21 and the thread pressing surface 3.22, where it is compressed.

[0085] The specific use of the device for automatically adjusting the tightness of embroidery thread of an embroidery machine in this embodiment is as follows:

[0086] By automatically controlling the thread pressure drive mechanism 2 to drive and accurately control the travel of the thread presser 3.2, the compression of the elastic element 3.23 is precisely controlled, thereby accurately adjusting the pressing force between the thread presser 3.21 and the thread pressing surface 3.22. This effectively improves the accuracy and consistency of thread tension adjustment on the embroidery machine, thereby improving the quality of embroidery products. Furthermore, the system eliminates the need for manual thread tension adjustment, effectively adapting to the needs and production schedule of current multi-station embroidery machines while reducing labor costs.

[0087] Specific embodiment 2: The rest of the structure of this embodiment refers to specific embodiment 1, except that:

[0088] like Figure 1 、 Figure 2 、 Figure 3 As shown, a device for automatically adjusting the tightness of embroidery thread of an embroidery machine also includes a mounting bracket 1. The embroidery machine includes a frame and a plurality of machine heads. Each machine head includes a needle bar frame that can be translated.

[0089] The wire crimping frame 3.1 of the wire crimping device 3 is slidably mounted on the mounting bracket 1, and the sliding direction of the wire crimping frame 3.1 is perpendicular to the movement direction of the needle bar frame. An automatic control line pressure drive mechanism 2 is mounted on the mounting bracket 1 and is used to drive the wire crimping frame 3.1 to move. The same wire crimping device 3 includes multiple wire crimpers 3.2. Each wire crimper 3.2 is arranged side by side on the wire crimping frame 3.1. In this embodiment, each wire crimper 3.2 is arranged in sequence along the movement direction of the needle bar frame.

[0090] The pressing portion 4 corresponds to the wire pressing device 3 one by one, and the pressing portion 4 is fixedly arranged. The pressing portion 4 is fixed directly or indirectly on the frame. In this embodiment, the pressing portion 4 is indirectly mounted on the frame through the mounting seat 11.

[0091] The mounting bracket 1 moves synchronously with the needle bar frame of the embroidery machine so that the pressing portion 4 sequentially corresponds to each thread presser 3.2 of the thread presser device 3. The automatic control thread pressure drive mechanism 2 drives the thread presser frame 3.1 to move, causing the thread presser 3.2 to move toward the pressing portion 4 and cooperate with the pressing portion 4 to compress the elastic element 3.23 of the corresponding thread presser 3.2, thereby adjusting the pressing force between the thread pressing piece 3.21 and the thread pressing surface 3.22 of the corresponding thread presser 3.2.

[0092] There are one or more thread pressing devices 3. Each thread pressing device 3 corresponds to a machine head. Each thread pressing device 3 corresponds to a pressing portion 4. In this embodiment, the thread pressing devices 3 correspond one to one with the machine heads of the embroidery machine. Of course, it should be noted that in actual application, the thread pressing devices 3 of this embodiment can also be applied to a portion of the machine heads of the embroidery machine.

[0093] In this embodiment, the thread pressers 3.2 in the same thread presser device 3 correspond one-to-one with the embroidery needles on the needle bar holders of the corresponding machine heads. The embroidery thread of the embroidery machine is located between the thread presser 3.21 and the thread presser surface 3.22 of the corresponding thread presser 3.2. Specifically, the embroidery thread of the embroidery machine first passes between the thread presser 3.21 and the thread presser surface 3.22 of the corresponding thread presser 3.2, and then passes through the corresponding embroidery needle.

[0094] The specific operation of the embroidery thread tension device of this embodiment is as follows (among the embroidery needles on the same needle bar rack of the embroidery machine, when one embroidery needle is working, the other embroidery needles are not working). The following describes the operation process of a certain embroidery needle in the head of the embroidery machine as an example.

[0095] When the needle bar frame moves horizontally to place the embroidery needle in the working position, the mounting bracket 1 moves synchronously with the needle bar frame to move the thread presser 3.2 corresponding to the embroidery needle to the top pressing portion 4;

[0096] Next, the automatic control thread pressure drive mechanism 2 drives the thread presser 3.1 to move, causing the thread presser 3.2 to move toward the pressing portion 4 and cooperate with the pressing portion 4 to compress the elastic element 3.23 of the thread presser 3.2. The automatic control thread pressure drive mechanism 2 automatically drives and accurately controls the movement of the thread presser 3.1, thereby accurately controlling the compression of the elastic element 3.23, thereby precisely adjusting the pressing force between the thread presser 3.21 and the thread pressing surface 3.22. This effectively improves the accuracy and consistency of thread tension adjustment on the embroidery machine, thereby improving the quality of the embroidery product. Furthermore, it eliminates the need for manual thread tension adjustment, making it well suited to the needs and production schedules of current multi-station embroidery machines and reducing labor costs.

[0097] When the embroidery needle stops working, the automatic control thread pressure driving mechanism 22 drives the thread pressing frame 3.1 to move back and reset, the pressing part 4 is separated from the elastic element 3.23, the compression of the elastic element 3.23 is released, and the elastic element 3.23 returns to its initial state.

[0098] On the other hand, the needle bar frame of the existing embroidery machine is generally provided with a row of embroidery needles. The embroidery machine drives the needle bar frame to move horizontally through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to embroidery threads of different colors); and the mounting bracket 1 of the present scheme moves synchronously with the needle bar frame of the embroidery machine, so that the top pressing part 4 corresponds to each thread presser 3.2 of the thread pressing device 3 in turn. Based on this, each thread presser 3.2 of each thread pressing device 3 only needs one automatic control line pressure drive mechanism 2, and there is no need for each thread presser 3.2 to correspond to an automatic control line pressure drive mechanism 2, which can effectively reduce the number of automatic control line pressure drive mechanisms 2, thereby reducing the production cost.

[0099] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 As shown, a guide rail 1.1 is provided on the mounting bracket 1. The guide rail 1.1 is perpendicular to the moving direction of the needle bar frame. The mounting bracket 1 corresponds to the wire pressing device 3. The wire pressing frame 3.1 of the wire pressing device 3 is slidably arranged on the corresponding mounting bracket 1.

[0100] The automatic control line pressure drive mechanism 2 includes a power component 2.1, a transmission mechanism 2.3 and a sliding seat 2.2 that is slidably arranged. The sliding seat 2.2 corresponds one-to-one to the wire pressing device 3. The sliding seat 2.2 is slidably arranged on the guide rail 1.1 on the corresponding mounting bracket 1. The wire pressing frame 3.1 of the wire pressing device 3 is fixedly arranged on the corresponding sliding seat. The transmission mechanism 2.3 corresponds one-to-one to the sliding seat 2.2. The power component 2.1 drives the sliding seat to slide. In this embodiment, the power component 2.1 drives the sliding seat 2.2 to move through the transmission mechanism 2.3. The power component 2.1 is arranged on the mounting bracket 1. The power component 2.1 is a driving motor or a rotary pump. In this embodiment, the power component 2.1 is a driving motor.

[0101] Further, such as Figure 2 、 Figure 3 As shown, a device for automatically adjusting thread tension for an embroidery machine includes a first track 9 and a first translation drive device 7. In this embodiment, the first track 9 is disposed on the machine frame. The first track 9 is parallel to the movement direction of the needle bar frame. The mounting bracket 1 translates along the first track 9.

[0102] The first translation drive device 7 drives the mounting bracket 1 to move synchronously with the needle bar frame along the first track 9. Specifically,

[0103] In one implementation of this embodiment, each mounting bracket 1 shares a first translation drive device 7, and the first translation drive device 7 drives each mounting bracket 1 to move synchronously. The first translation drive device 7 is arranged on the frame of the embroidery machine. Specifically, a translation bracket 10 that translates along the first track 9 is provided on the first track 9, and each mounting bracket 1 is fixedly mounted on the translation bracket 10. The first translation drive device 7 drives the translation bracket to translate along the first track 9, thereby driving each mounting bracket 1 to move synchronously with the needle bar frame. In this way, there is no need for each mounting bracket 1 to correspond to a first translation drive device 7, which can effectively reduce the number of first translation drive devices 7, thereby further reducing the manufacturing cost.

[0104] In the second embodiment of this embodiment, the mounting brackets 1 correspond one to one with the first translation drive device 7. The first translation drive device 7 drives the corresponding mounting bracket 1. The first translation drive device 7 is mounted on the frame of the embroidery machine. This facilitates the independent layout and application of each mounting bracket 1 and the first translation drive device 7.

[0105] The first translation drive device 7 adopts the following method:

[0106] The first translation drive device 7 is an electric cylinder, electric push rod, or linear module. In this embodiment, the first translation drive device 7 includes a translation motor, a translation slider, and a screw-nut drive mechanism mounted on a frame. The translation slider is slidably mounted on the frame, and its sliding direction is parallel to the first rail 9. The nut of the screw-nut drive mechanism is connected to the translation slider. The translation slider is connected to the mounting bracket 1 via a connector.

[0107] When each mounting bracket 1 shares a first translation driving device 7 , the translation slider is connected to the translation bracket via a connecting member; or the translation slider is connected to one of the mounting brackets 1 via a connecting member.

[0108] When the mounting brackets 1 correspond one to one with the first translation drive devices 7 , the translation sliders are connected to the corresponding mounting brackets 1 via connectors.

[0109] The translation motor drives the screw of the screw nut driving mechanism to rotate, driving the translation slider to move back and forth, thereby driving the mounting bracket 1 to move synchronously with the needle bar frame. Of course, it should be noted that the first translation drive device 7 can also be other first translation drive devices 7 on the market.

[0110] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 1, except that:

[0111] like Figure 4 、 Figure 5 、 Figure 6As shown, a device for automatically adjusting the thread tension of an embroidery machine also includes a fixed mounting bracket 1. The embroidery machine includes a frame and a plurality of machine heads. Each machine head includes a translationally movable needle bar frame. In this embodiment, the mounting bracket 1 is fixedly mounted on the frame.

[0112] The wire crimping frame 3.1 of the wire crimping device 3 is slidably mounted on the mounting bracket 1, and the sliding direction of the wire crimping frame 3.1 is perpendicular to the movement direction of the needle bar frame. The automatic control line pressure drive mechanism 2 is mounted on the mounting bracket 1 or the frame and is used to drive the wire crimping frame 3.1 to move. The same wire crimping device 3 may include multiple wire crimpers 3.2. Each wire crimper 3.2 is arranged side by side on the wire crimping frame 3.1. In this embodiment, each wire crimper 3.2 is arranged in sequence along the movement direction of the needle bar frame.

[0113] The pressing portion 4 corresponds to each thread presser 3. It moves synchronously with the needle bar frame of the embroidery machine, aligning it with each thread presser 3.2 of the thread presser 3. The automatic thread pressure drive mechanism 2 drives the thread presser frame 3.1, causing the thread presser 3.2 to move toward the pressing portion 4. The pressing portion 4 then compresses the elastic element 3.23 of the corresponding thread presser 3.2, adjusting the pressing force between the corresponding thread presser 3.21 and the thread pressing surface 3.22.

[0114] There are one or more thread pressing devices 3. Each thread pressing device 3 corresponds to a machine head. In this embodiment, the thread pressing devices 3 correspond one to one with the machine heads of the embroidery machine. Of course, it should be noted that in actual application, the thread pressing device 3 of this embodiment can also be applied to a portion of the machine heads of the embroidery machine.

[0115] In this embodiment, the thread pressers 3.2 in the same thread presser device 3 correspond one-to-one with the embroidery needles on the needle bar holders of the corresponding machine heads. The embroidery thread of the embroidery machine is located between the thread presser 3.21 and the thread presser surface 3.22 of the corresponding thread presser 3.2. Specifically, the embroidery thread of the embroidery machine first passes between the thread presser 3.21 and the thread presser surface 3.22 of the corresponding thread presser 3.2, and then passes through the corresponding embroidery needle.

[0116] The specific operation of the embroidery thread tension device of this embodiment is as follows (among the embroidery needles on the same needle bar rack of the embroidery machine, when one embroidery needle is working, the other embroidery needles are not working). The following describes the operation process of a certain embroidery needle in the head of the embroidery machine as an example.

[0117] When the needle bar frame moves horizontally to place the embroidery needle in the working position, the pressing part 4 moves synchronously with the needle bar frame to move the pressing part 4 horizontally to the thread presser 3.2 corresponding to the embroidery needle;

[0118] Next, the automatic control thread pressure drive mechanism 2 drives the thread presser 3.1 to move, causing the thread presser 3.2 to move toward the pressing portion 4 and cooperate with the pressing portion 4 to compress the elastic element 3.23 of the thread presser 3.2. The automatic control thread pressure drive mechanism 2 automatically drives and accurately controls the movement of the thread presser 3.1, thereby accurately controlling the compression of the elastic element 3.23, thereby precisely adjusting the pressing force between the thread presser 3.21 and the thread pressing surface 3.22. This effectively improves the accuracy and consistency of thread tension adjustment on the embroidery machine, thereby improving the quality of the embroidery product. Furthermore, it eliminates the need for manual thread tension adjustment, making it well suited to the needs and production schedules of current multi-station embroidery machines and reducing labor costs.

[0119] When the embroidery needle stops working, the automatic control thread pressure driving mechanism 22 drives the thread pressing frame 3.1 to move back and reset, the pressing part 4 is separated from the elastic element 3.23, the compression of the elastic element 3.23 is released, and the elastic element 3.23 returns to its initial state.

[0120] On the other hand, the needle bar frame of the existing embroidery machine is generally provided with a row of embroidery needles. The embroidery machine drives the needle bar frame to move horizontally through the embroidery machine color changing system to realize the operation of different embroidery needles on the needle bar frame (different embroidery needles correspond to embroidery threads of different colors); and the top pressing part 4 of this scheme moves synchronously with the needle bar frame of the embroidery machine, so that the top pressing part 4 corresponds to each thread presser 3.2 of the thread pressing device 3 in turn. Based on this, each thread presser 3.2 of each thread pressing device 3 only needs one automatic control line pressure drive mechanism 2, and there is no need for each thread presser 3.2 to correspond to an automatic control line pressure drive mechanism 2, which can effectively reduce the number of automatic control line pressure drive mechanisms 2, thereby reducing the production cost.

[0121] Specifically, such as Figure 4 、 Figure 5 、 Figure 6 As shown, a guide rail 1.1 is provided on the mounting bracket 1. The guide rail 1.1 is perpendicular to the moving direction of the needle bar frame. The mounting bracket 1 corresponds to the wire pressing device 3. The wire pressing frame 3.1 of the wire pressing device 3 is slidably arranged on the corresponding mounting bracket 1.

[0122] The automatic control line pressure drive mechanism 2 includes a power component 2.1, a transmission mechanism 2.3 and a sliding seat 2.2 that is slidably arranged. The sliding seat 2.2 corresponds one-to-one to the wire pressing device 3. The sliding seat 2.2 is slidably arranged on the guide rail 1.1 on the corresponding mounting bracket 1. The wire pressing frame 3.1 of the wire pressing device 3 is fixedly arranged on the corresponding sliding seat. The transmission mechanism corresponds one-to-one to the sliding seat. The power component drives the sliding seat to slide. In this embodiment, the power component 2.1 drives the sliding seat 2.2 to move through the transmission mechanism 2.3. The power component 2.1 is arranged on the mounting bracket 1 or the frame. The power component 2.1 is a drive motor or a rotary pump. In this embodiment, the power component 2.1 is a drive motor.

[0123] Further, such as Figure 5 、 Figure 6 As shown, a device for automatically adjusting thread tension for an embroidery machine includes a second track 12 and a second translation drive 13. In this embodiment, the second track 12 is mounted on the machine frame. The second track 12 is parallel to the movement direction of the needle bar frame. The pressing portion 4 translates along the second track 12.

[0124] The second translation drive device 13 drives the pressing portion 4 to move synchronously with the needle bar frame along the second track 12. Specifically,

[0125] In one implementation of this embodiment, each pressing part 4 shares a second translation drive device 13, and the second translation drive device 13 drives each pressing part 4 to move synchronously. The second translation drive device 13 is arranged on the frame of the embroidery machine. Specifically, a plurality of supports 6 are slidingly arranged on the second track 12, and the supports 6 correspond one to one with the pressing parts 4. The pressing parts 4 are arranged on the corresponding supports 6, so that the pressing parts 4 slide along the second track 12. The supports 6 are connected as a whole through a connecting piece to realize the synchronous movement of each pressing part 4 driven by the same second translation drive device 13. In this way, there is no need for each pressing part 4 to correspond to a second translation drive device 13, which can effectively reduce the number of second translation drive devices 13, thereby further reducing the production cost.

[0126] In the second embodiment of this embodiment, the pressing parts 4 correspond one-to-one with the second translation drive device 13. The second translation drive device 13 drives the corresponding pressing part 4 to move. The second translation drive device 13 is mounted on the frame of the embroidery machine. Specifically, a plurality of supports 6 are slidably mounted on the second track 12, each support 6 corresponding one-to-one with the pressing parts 4. The pressing parts 4 are mounted on the corresponding supports 6, thereby sliding along the second track 12. This facilitates the independent layout and application of each pressing part 4 and the second translation drive device 13.

[0127] The second translation drive device 13 adopts the following method:

[0128] The second translation drive device 13 is an electric cylinder, electric push rod, or linear module. In this embodiment, the second translation drive device 13 includes a translation motor, a translation slider, and a screw-nut drive mechanism mounted on the frame. The translation slider is slidably mounted on the frame, and its sliding direction is parallel to the second track 12. The translation slider is connected to the support 6 via a connector. The screw-nut drive mechanism's nut is connected to the translation slider.

[0129] When the pressing parts 4 share a second translation driving device 13 , the translation slider is connected to one of the supports 6 via a connecting piece.

[0130] When the pressing portion 4 corresponds to the second translation driving device 13 one by one, the translation slider is connected to the corresponding support 6 through a connecting piece.

[0131] The translation motor drives the screw of the screw nut driving mechanism to rotate, driving the translation slider to move back and forth, thereby driving the support 6 and the top pressing part 4 to move synchronously with the needle bar frame. Of course, it should be noted that the second translation drive device 13 can also be other second translation drive devices 13 on the market.

[0132] Specific embodiment 4: The rest of the structure of this embodiment refers to any one of the specific embodiments 1 to 3, except that:

[0133] like Figure 1 、 Figure 4 As shown, the wire crimping device 3.2 also includes a guide rod 3.26. The guide rod 3.26 is fixed to the wire crimping frame 3.1. Specifically, the guide rod 3.26 is fixed to the wire crimping frame 3.1 by bolts, welding, or riveting. The wire crimping plate 3.21 slides along the guide rod 3.26. The wire crimping plate 3.21 has a guide hole in the middle, through which the guide rod 3.26 passes.

[0134] A limit block 3.25 is provided at the end of the guide rod 3.26. A sliding component 3.24 is also provided on the guide rod 3.26. In the present embodiment, the sliding component 3.24 is a sliding plate, which slides along the guide rod 3.26. The guide rod 3.26 passes through a guide hole in the middle of the sliding plate. The limit block 3.25, the sliding component 3.24 and the wire pressing plate 3.21 are distributed in sequence along the axial direction of the guide rod 3.26. The elastic element 3.23 is located between the sliding component 3.24 and the wire pressing plate 3.21. The sliding component 3.24 rests on the limit block 3.25 under the action of the elastic element 3.23. In the present embodiment, the elastic element 3.23 is a spring, which is sleeved on the guide rod 3.26, and the two ends of the spring rest between the sliding component 3.24 and the wire pressing plate 3.21.

[0135] The guide rail 1.1 is parallel to the axial direction of the guide rod 3.26 (that is, the direction in which the wire pressing frame 3.1 slides along the guide rail is parallel to the axial direction of the guide rod 3.26). The pressing portion 4, the sliding component 3.24 and the wire pressing piece 3.21 are distributed in sequence along the axial direction of the guide rod 3.26. The pressing portion 4 compresses the elastic element 3.23 by pushing the sliding component 3.24. The pressing portion 4 and the sliding component 3.24 are connected by abutment, and the pressing portion 4 can be separated from the sliding component 3.24. Specifically, the pressing portion 4 is provided with a pressure rod through hole, and when the pressing portion 4 abuts against the sliding component 3.24, the guide rod 3.26 and the limit block 3.25 can extend into the pressure rod through hole. For example, the pressing portion 4 is a sleeve, and the inner hole of the sleeve constitutes the pressure rod through hole. Of course, it needs to be said that the purpose is that the pressing portion 4 can also be a pushing member, such as a pressure rod or a pushing block (the pushing member is not provided with a pressure rod through hole).

[0136] In this embodiment, the pressing surface 3.22 is implemented in the following manner. Specifically,

[0137] In one implementation of this embodiment, Figure 1 、 Figure 4 As shown, the thread crimping device 3.2 also includes a thread crimping seat 3.27. The thread crimping seat 3.27 is fixed on the thread crimping frame 3.1. For example, the thread crimping seat 3.27 is fixed on the thread crimping frame 3.1 at the root of the guide rod 3.26. The elastic element 3.23, the thread crimping piece 3.21 and the thread crimping seat 3.27 are distributed in sequence along the axial direction of the guide rod 3.26. The side of the thread crimping seat 3.27 facing the thread crimping piece 3.21 constitutes the thread crimping surface 3.22. In this way, the thread crimping piece 3.21 cooperates with the thread crimping seat 3.27 to press the embroidery thread. The thread crimping seat 3.27 can be made separately, which is convenient for improving the smoothness of the thread crimping surface 3.22 that contacts the embroidery thread. The structure of the thread crimping seat 3.27 and the thread crimping piece 3.21 can be the same or different. In this embodiment, the thread crimping seat 3.27 and the thread crimping piece 3.21 are symmetrically distributed.

[0138] In the second implementation of this embodiment, Figure 1 、 Figure 4As shown, the thread crimper 3.2 also includes a thread crimping seat 3.27. The thread crimping seat 3.27 can slide along the guide rod 3.26. A guide hole is provided in the middle of the thread crimping seat 3.27, and the guide rod 3.26 passes through the guide hole on the thread crimping seat 3.27. The elastic element 3.23, the thread crimping piece 3.21 and the thread crimping seat 3.27 are distributed in sequence along the axial direction of the guide rod 3.26. Under the action of the elastic element 3.23, the thread crimping piece 3.21 and the thread crimping seat 3.27 slide along the guide rod 3.26, and the thread crimping seat 3.27 is pressed against the thread crimping frame 3.1. The side of the thread crimping seat 3.27 facing the thread crimping piece 3.21 constitutes the thread crimping surface 3.22. In this way, the thread crimping piece 3.21 and the thread crimping seat 3.27 cooperate to compress the embroidery thread. The thread crimping seat 3.27 can be manufactured separately, which facilitates improving the smoothness of the thread crimping surface 3.22 that contacts the embroidery thread. The structures of the wire pressing seat 3.27 and the wire pressing piece 3.21 can be the same or different. In this embodiment, the wire pressing seat 3.27 and the wire pressing piece 3.21 are symmetrically distributed.

[0139] In the third embodiment of the present invention, the side surface of the crimping frame 3.1 facing the crimping sheet 3.21 constitutes the crimping surface 3.22 (not shown in the figure). In this way, the crimping seat 3.27 can be omitted, reducing the manufacturing cost.

[0140] Specific embodiment 5: The rest of the structure of this embodiment refers to any one of the specific embodiments 1 to 4, except that:

[0141] The power component 2.1 and the transmission mechanism 2.3 are implemented in the following manner. Specifically,

[0142] In one implementation of this embodiment, Figure 3 、 Figure 5 As shown, the transmission mechanism 2.3 corresponds to the power component 2.1. The power component 2.1 drives the corresponding sliding seat 2.2 to move through the transmission mechanism 2.3. In this way, the independent layout application of each wire pressing device 3 and the power component 2.1 is convenient.

[0143] In another embodiment of this embodiment, multiple transmission mechanisms 2.3 share a single power component 2.1 (not shown). In this embodiment, each transmission mechanism 2.3 shares a single power component 2.1. This power component 2.1 drives the sliding seats 2.2 to move synchronously via the transmission mechanism 2.3. This allows each wire pressing device 3 to share a single power component 2.1, eliminating the need for a dedicated power component 2.1 for each wire pressing device 3. This effectively reduces the number of power components 2.1, further lowering manufacturing costs.

[0144] In this embodiment, the transmission mechanism is implemented in the following manner. Specifically,

[0145] In one implementation of this embodiment, Figure 1As shown, the transmission mechanism 2.3 includes a rocker arm 2.31 and a connecting rod 2.32. The power component 2.1 drives the rocker arm 2.31 to rotate. Specifically, the output shaft of the drive motor is fixedly connected to the rocker arm 2.31, and the drive motor drives the rocker arm 2.31 to rotate. The connecting rod 2.32 is hingedly connected to the rocker arm 2.31 at one end, and hingedly connected to the sliding seat 2.2 at the other end. The drive motor rotates the rocker arm 2.31, which in turn drives the sliding seat 2.2 via the connecting rod 2.32, thereby controlling the back-and-forth movement of the pressing portion 4. The drive motor controls the rotation angle of the rocker arm 2.31 to control the travel of the pressing portion 4.

[0146] In this embodiment, when multiple transmission mechanisms 2.3 share a single power unit 2.1, the rocker arms 2.31 of each transmission mechanism 2.3 share a single drive shaft. The drive shaft is perpendicular to the sliding direction of the sliding seat. The rocker arms 2.31 of each transmission mechanism 2.3 are fixedly connected to the drive shaft and extend radially along the drive shaft. The drive motor constituting the power unit 2.1 rotates the drive shaft, thereby driving the rocker arms 2.31 of each transmission mechanism 2.3 to rotate. The rocker arms 2.31 of each transmission mechanism 2.3, via corresponding connecting rods 2.32, drive the sliding seats 2.2 to move synchronously.

[0147] In the second implementation of this embodiment, Figure 4 As shown, the transmission mechanism 2.3 includes a screw 2.33. The power component 2.1 drives the screw 2.33 to rotate, i.e., the drive motor drives the screw 2.33 to rotate. The screw 2.33 slides parallel to the sliding seat 2.2. The screw 2.33 and the sliding seat 2.2 are connected by threads. The drive motor drives the screw 2.33 to rotate, thereby controlling the back-and-forth movement of the pressing portion 4.

[0148] In this embodiment, when multiple transmission mechanisms 2.3 share a common power component 2.1, the screws 2.33 of any two adjacent transmission mechanisms 2.3 are connected by a synchronous belt. The drive motor constituting the power component 2.1 drives the screw 2.33 of any transmission mechanism 2.3 to rotate, thereby driving the screws 2.33 of all transmission mechanisms 2.3 to rotate, and further driving the sliding seats 2.2 to move synchronously.

[0149] Alternatively, a bevel gear mechanism is provided on the screw 2.33 of each transmission mechanism 2.3. The bevel gear mechanism includes a driven gear provided on the screw 2.33 and a driving gear meshing with the driven gear. The driving gears of each bevel gear mechanism share a common drive shaft, and the driving gears of each bevel gear mechanism are fixedly connected to the drive shaft. The drive motor constituting the power component 2.1 drives the drive shaft to rotate, thereby driving the screw 2.33 of each transmission mechanism 2.3 to rotate through each bevel gear mechanism, thereby driving each sliding seat 2.2 to move synchronously.

[0150] In the third embodiment of this embodiment, the transmission mechanism 2.3 comprises a synchronous belt drive mechanism. The transmission direction of the synchronous belt drive mechanism is parallel to the sliding direction of the sliding seat 2.2. The synchronous belt of the synchronous belt drive mechanism is connected to the sliding seat 2.2 via a connector. The power component 2.1 drives the synchronous belt drive mechanism, i.e., the drive motor drives the synchronous belt drive, thereby controlling the back-and-forth movement of the pressing portion 4.

[0151] In this embodiment, when multiple transmission mechanisms 2.3 share a power component 2.1, the driving pulleys of each synchronous belt transmission mechanism share a driving shaft, the driving shaft is perpendicular to the sliding direction of the sliding seat, and each driving pulley is fixedly connected to the driving shaft; the driving motor constituting the power component 2.1 drives the driving shaft to rotate, thereby driving the synchronous belt transmission mechanism of each transmission mechanism 2.3 to transmit, and then drives each sliding seat 2.2 to move synchronously.

[0152] In the fourth embodiment of this embodiment, the transmission mechanism 2.3 includes a gear and a rack. The gear meshes with the rack. The rack slides parallel to the sliding direction of the sliding seat 2.2, and the rack is fixedly connected to the sliding seat 2.2. The power component 2.1 drives the gear to rotate, that is, the drive motor drives the gear to rotate, which drives the rack and sliding seat 2.2 to move, thereby controlling the back-and-forth movement of the pressing portion 4.

[0153] In this embodiment, when multiple transmission mechanisms 2.3 share a power component 2.1, the gears of each transmission mechanism 2.3 share a drive shaft, the drive shaft is perpendicular to the sliding direction of the sliding seat, and the gears of each transmission mechanism 2.3 are fixedly connected to the drive shaft; the drive motor constituting the power component 2.1 drives the drive shaft to rotate, thereby driving the gears of each transmission mechanism 2.3 to rotate, and the gears of each transmission mechanism 2.3 drive the sliding seats 2.2 to move synchronously through the corresponding racks.

[0154] In the fifth implementation of this embodiment, the transmission mechanism 2.3 includes a shift fork. A waist-shaped hole is provided on the shift fork. A pin rod that cooperates with the waist-shaped hole is provided on the sliding seat 2.2, and the pin rod is inserted into the waist-shaped hole. The power component 2.1 drives the shift fork to rotate. Specifically, the drive motor drives the shift fork to rotate, and the shift fork is fixedly connected to the output shaft of the drive motor. The length of the waist-shaped hole extends radially along the output shaft of the drive motor, and the pin rod is parallel to the output shaft. The drive motor drives the shift fork to rotate back and forth, and the shift fork drives the sliding seat 2.2 to slide through the pin rod, thereby controlling the back and forth movement of the top pressure part 4. The drive motor controls the movement stroke of the top pressure part 4 by controlling the rotation angle of the shift fork.

[0155] In this embodiment, when multiple transmission mechanisms 2.3 share a power component 2.1, the shift forks of each transmission mechanism 2.3 share a drive shaft, the drive shaft is perpendicular to the sliding direction of the sliding seat, and the shift forks of each transmission mechanism 2.3 are fixedly connected to the drive shaft; the drive motor constituting the power component 2.1 drives the drive shaft to rotate, thereby driving the shift forks of each transmission mechanism 2.3 to rotate, and then driving the sliding seats 2.2 to move synchronously.

[0156] In a sixth implementation of this embodiment, the transmission mechanism 2.3 includes a cam, and the power component 2.1 drives the cam to rotate. Specifically, the driving motor drives the cam to rotate, and the cam pushes the sliding seat 2.2 to move, thereby controlling the pressing part 4 to move back and forth.

[0157] In this embodiment, when multiple transmission mechanisms 2.3 share a power component 2.1, the cams of each transmission mechanism 2.3 share a drive shaft, the drive shaft is perpendicular to the sliding direction of the sliding seat, and the cams of each transmission mechanism 2.3 are fixedly connected to the drive shaft; the drive motor constituting the power component 2.1 drives the drive shaft to rotate, thereby driving the cams of each transmission mechanism 2.3 to rotate, and then driving the sliding seats 2.2 to move synchronously.

[0158] Specific embodiment 6: The rest of the structure of this embodiment refers to any one of the specific embodiments 1 to 4, except that:

[0159] In this embodiment, the automatic control line pressure drive mechanism 22 includes a power component 2.1 and a sliding seat 2.2 (omitting the transmission mechanism). Power component 2.1 directly drives the sliding seat 2.2. In this embodiment, the power component is an electric cylinder, electric push rod, or linear module (not shown).

[0160] Specific embodiment 7: The rest of the structure of this embodiment refers to any one of the specific embodiments 1 to 6, except that:

[0161] like Figure 1 、 Figure 3 、 Figure 4 As shown, an automatic thread pressure control device for an embroidery machine further includes a detection sensor 8. The detection sensor 8 is used to detect the pressing force between the thread pressing piece 3.21 and the thread pressing surface 3.22 of each thread pressing device 3.2 in the thread pressing device 3 (i.e., to detect the pressing force exerted on the embroidery thread between the thread pressing piece 3.21 and the thread pressing surface 3.22). The detection sensor 8 can be an existing sensor, such as a force sensor.

[0162] The specific use of the automatic control thread pressure device of an embroidery machine of this embodiment is as follows:

[0163] During the process of automatically controlling the thread pressure driving mechanism 2 to adjust the clamping force between the thread pressing piece 3.21 and the thread pressing surface 3.22, the clamping force between the thread pressing piece 3.21 and the thread pressing surface 3.22 is detected in real time by the detection sensor 8. When the detection sensor 8 detects that the clamping force between the thread pressing piece 3.21 and the thread pressing surface 3.22 reaches the set value, the automatic control thread pressure driving mechanism 2 stops driving the thread pressing frame 3.1, thereby accurately adjusting the clamping force between the thread pressing piece 3.21 and the thread pressing surface 3.22 to ensure the consistency of the tightness of each embroidery thread; effectively avoiding the problem of the processing precision of the elastic element 3.23 affecting the adjustment accuracy and consistency of the embroidery thread tightness.

[0164] In addition, by detecting the pressing force between the thread pressing piece 3.21 and the thread pressing surface 3.22 in real time through the detection sensor 8, the pressing force between the thread pressing piece 3.21 and the thread pressing surface 3.22 can be accurately adjusted, and the problem of affecting the adjustment accuracy and consistency of the embroidery thread tightness due to the processing accuracy of the elastic element 3.23 can be effectively avoided.

[0165] The detection sensor 8 is used to detect the pressing force between the wire pressing piece 3.21 and the wire pressing surface 3.22 of each wire pressing device 3.2 in the wire pressing device 3. The specific installation method of the detection sensor 8 is as follows:

[0166] In one implementation of this embodiment, Figure 1 、 Figure 4 As shown, the detection sensor 8 is disposed between the support 6 and the pressing portion 4. Thus, when the pressing portion 4 rests against the sliding member 3.24 and compresses the elastic element 3.23, the detection sensor 8 can detect the pressing force between the wire pressing piece 3.21 and the wire pressing surface 3.22 in real time. By disposing the detection sensor 8 between the support 6 and the pressing portion 4, each wire pressing device 3 only requires one detection sensor 8 to detect the pressing force between the wire pressing piece 3.21 and the wire pressing surface 3.22 of each wire pressing device 3.2, effectively reducing the number of detection sensors 8 and lowering costs.

[0167] In a second embodiment of this embodiment, a detection sensor 8 corresponds one-to-one with the pressing portion 4, and the detection sensor 8 is disposed on the pressing portion 4 at one end (not shown) facing the wire presser 3.2. Thus, when the pressing portion 4 presses against the sliding member 3.24 to compress the elastic element 3.23, the detection sensor 8 can detect the pressing force between the wire pressing piece 3.21 and the wire pressing surface 3.22 in real time. Thus, each wire pressing device 3 only requires one detection sensor 8 to detect the pressing force between the wire pressing piece 3.21 and the wire pressing surface 3.22 of each wire presser 3.2 in the wire pressing device 3, effectively reducing the number of detection sensors 8 and lowering costs.

[0168] In the third embodiment of the present embodiment, the detection sensor 8 corresponds to the wire pressing device 3.2 one by one. The detection sensor 8 is arranged between the wire pressing seat 3.27 of the corresponding wire pressing device 3.2 and the wire pressing frame 3.1. For example, the detection sensor 8 is fixed on the wire pressing frame 3.1, and the wire pressing seat 3.27 is fixed on the detection sensor 8, so that the wire pressing seat 3.27 is fixed to the wire pressing frame 3.1 through the detection sensor 8; or the detection sensor 8 is fixed on the wire pressing frame 3.1, and the wire pressing seat 3.27 slides along the guide rod 3.26 under the action of the elastic element 3.23, and the wire pressing seat 3.27 is against the detection sensor 8; or the detection sensor 8 is fixed on the side of the wire pressing seat 3.27 facing away from the wire pressing piece 3.21, and the wire pressing seat 3.27 slides along the guide rod 3.26 under the action of the elastic element 3.23, and the detection sensor 8 is against the wire pressing frame 3.1. In this embodiment, when the pressing portion 4 presses against the sliding member 3.24 to compress the elastic element 3.23, the detection sensor 8 can detect the pressing force between the pressing piece 3.21 and the pressing surface 3.22 in real time.

[0169] In a fourth embodiment of this embodiment, the detection sensor 8 corresponds one-to-one with the thread presser 3.2. The detection sensor 8 is disposed between the thread presser 3.21 and the elastic element 3.23 of the corresponding thread presser 3.2, or the detection sensor 8 is disposed on the sliding member 3.24 of the corresponding thread presser 3.2 at one end facing the pressing portion 4, or the detection sensor 8 is disposed between the sliding member 3.24 and the elastic element 3.23 of the thread presser 3.2 (not shown). In this embodiment, when the pressing portion 4 presses against the sliding member 3.24 to compress the elastic element 3.23, the detection sensor 8 can detect the pressing force between the thread presser 3.21 and the thread pressing surface 3.22 in real time.

[0170] Specific embodiment 8, an embroidery machine, including an automatic thread tension adjustment device of the embroidery machine. The specific structure of the automatic thread tension adjustment device of the embroidery machine can be referred to any one of specific embodiments 1 to 7.

[0171] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation of the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A device for automatically adjusting the tightness of embroidery thread of an embroidery machine, characterized in that: include: A wire pressing device (3) comprising a wire pressing frame (3.1) and a wire pressing device (3.2) arranged on the wire pressing frame (3.1), wherein the wire pressing device (3.2) comprises an elastic element, a wire pressing surface and a wire pressing piece, and the wire pressing piece rests on the wire pressing surface under the action of the elastic element; Top pressing portion (4); The automatic control line pressure driving mechanism (2) drives the line pressing frame (3.1) to move, so that the line pressing device (3.2) moves toward the pressing portion (4) and cooperates with the pressing portion (4) to compress the elastic element to adjust the pressing force between the line pressing piece of the line pressing device (3.2) and the line pressing surface.

2. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 1, characterized in that: It also includes a mounting bracket (1), a wire pressing frame (3.1) of a wire pressing device (3) is slidably arranged on the mounting bracket (1), an automatic control wire pressure driving mechanism (2) is arranged on the mounting bracket (1), the pressing portion (4) corresponds to the wire pressing device (3) one by one, and the pressing portion (4) is fixedly arranged; The same wire pressing device (3) has multiple wire pressing devices (3.2), and the wire pressing devices (3.2) are distributed side by side on the wire pressing frame (3.1); The mounting bracket (1) moves synchronously with the needle bar frame of the embroidery machine so that the pressing portion (4) corresponds to each thread presser (3.2) of the thread pressing device (3) in sequence; The automatic control line pressure driving mechanism (2) drives the wire pressing frame (3.1) to move, so that the wire pressing device (3.2) moves toward the pressing portion (4) and cooperates with the pressing portion (4) to compress the elastic element of the corresponding wire pressing device (3.2) to adjust the pressing force between the corresponding wire pressing piece and the wire pressing surface.

3. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 2, characterized in that include: A first track (9) parallel to the moving direction of the needle bar frame, and the mounting bracket (1) moves horizontally along the first track (9); The first translation drive device (7) drives the mounting bracket (1) to move synchronously with the needle bar frame along the first track (9).

4. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 3, characterized in that: There are multiple wire pressing devices (3), the mounting brackets (1) correspond to the wire pressing devices (3) one by one, and the wire pressing frames (3.1) of the wire pressing devices (3) are slidably arranged on the corresponding mounting brackets (1); Each mounting bracket (1) shares a first translation drive device (7), and the first translation drive device (7) drives each mounting bracket (1) to move synchronously; Alternatively, the mounting brackets (1) correspond to the first translation drive devices (7) on a one-to-one basis, and the first translation drive devices (7) drive the corresponding mounting brackets (1) to move.

5. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 1, characterized in that: It also includes a fixed mounting bracket (1), and a wire pressing frame (3.1) of the wire pressing device (3) is slidably arranged on the mounting bracket (1); The same wire pressing device (3) has multiple wire pressing devices (3.2), and the wire pressing devices (3.2) are distributed side by side on the wire pressing frame (3.1); The pressing portion (4) corresponds to the thread pressing device (3) one by one, and the pressing portion (4) moves synchronously with the needle bar frame of the embroidery machine so that the pressing portion (4) corresponds to each thread presser (3.2) of the thread pressing device (3) in sequence; The automatic control line pressure driving mechanism (2) drives the wire pressing frame (3.1) to move, so that the wire pressing device (3.2) moves toward the pressing portion (4) and cooperates with the pressing portion (4) to compress the elastic element of the corresponding wire pressing device (3.2) to adjust the pressing force between the corresponding wire pressing piece and the wire pressing surface.

6. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 5, characterized in that include: A second track (12) is parallel to the moving direction of the needle bar frame, and the pressing portion (4) moves horizontally along the second track (12); The second translation drive device (13) drives the pressing portion (4) to move synchronously with the needle bar frame along the second track (12).

7. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 6, characterized in that: There are multiple wire pressing devices (3), the mounting brackets (1) correspond to the wire pressing devices (3) one by one, and the wire pressing frames (3.1) of the wire pressing devices (3) are slidably arranged on the corresponding mounting brackets (1); Each pressing part (4) shares a second translation drive device (13), and the second translation drive device (13) drives each pressing part (4) to move synchronously; or the pressing part (4) corresponds to the second translation drive device (13) one by one, and the second translation drive device (13) drives the corresponding pressing part (4) to move.

8. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to any one of claims 1 to 7, characterized in that: The automatic control line pressure driving mechanism (2) comprises: A sliding seat (2.2) is slidably arranged, and the wire pressing frame (3.1) is arranged on the sliding seat (2.2); The power component (2.1) drives the sliding seat (2.2) to slide.

9. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 8, characterized in that: The automatic control line pressure drive mechanism (2) further includes a transmission mechanism (2.3), and the transmission mechanism (2.3) corresponds one-to-one to the sliding seat (2.2); The transmission mechanism (2.3) corresponds to the power component (2.1) on a one-to-one basis, and the power component (2.1) drives the corresponding sliding seat (2.2) to move via the transmission mechanism (2.3); Alternatively, a plurality of transmission mechanisms (2.3) share a power component (2.1), and the power component (2.1) drives the sliding seats (2.2) to move synchronously via the transmission mechanism (2.3).

10. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 9, characterized in that: The transmission mechanism (2.3) includes: The power component (2.1) drives the pendulum to rotate; A connecting rod, one end of which is hingedly connected to the rocker arm, and the other end of which is hingedly connected to the sliding seat (2.2).

11. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 9, characterized in that: The transmission mechanism (2.3) includes: The power component (2.1) drives the screw to rotate, the sliding directions of the screw and the sliding seat (2.2) are parallel, and the screw and the sliding seat (2.2) are connected by bolts.

12. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 9, characterized in that: The transmission mechanism (2.3) includes a synchronous belt transmission mechanism (2.3), a power component (2.1) drives the synchronous belt transmission mechanism (2.3) to transmit, a transmission direction of the synchronous belt transmission mechanism (2.3) is parallel to a sliding direction of the sliding seat (2.2), and a synchronous belt of the synchronous belt transmission mechanism (2.3) is connected to the sliding seat (2.2) via a connecting piece.

13. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 9, characterized in that: The transmission mechanism (2.3) includes a gear and a rack. The gear and the rack are meshed. The power component (2.1) drives the gear to rotate. The sliding direction of the rack is parallel to the sliding direction of the sliding seat (2.2). The rack and the sliding seat (2.2) are fixedly connected.

14. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 9, wherein: The transmission mechanism (2.3) includes a shift fork. The power component (2.1) drives the shift fork to rotate. The shift fork is provided with a waist-shaped hole. The sliding seat (2.2) is provided with a pin rod that matches the waist-shaped hole. The pin rod is inserted into the waist-shaped hole.

15. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to any one of claims 1 to 7, characterized in that: The wire crimping device (3.2) further comprises a wire crimping seat and a guide rod fixed on the wire crimping frame (3.1), and the wire crimping piece slides along the guide rod; The crimping seat is fixed on the crimping frame (3.1), and the side of the crimping seat facing the crimping sheet constitutes the crimping surface; Alternatively, the wire pressing seat can slide along the guide rod, and the wire pressing sheet and the wire pressing seat slide along the guide rod under the action of the elastic element, and the wire pressing seat is pressed against the wire pressing frame (3.1), and the side of the wire pressing seat facing the wire pressing sheet constitutes the wire pressing surface.

16. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 15, characterized in that: A limit block is provided at the end of the guide rod, and a sliding component is also provided on the guide rod. The limit block, the sliding component and the wire pressing piece are distributed in sequence along the axial direction of the guide rod, and the elastic element is located between the sliding component and the wire pressing piece.

17. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to any one of claims 1 to 7, characterized in that: The wire crimping device (3.2) further comprises a guide rod, which is fixed on the wire crimping frame (3.1), and a wire crimping sheet slides along the guide rod, and the side of the wire crimping frame (3.1) facing the wire crimping sheet forms the wire crimping surface.

18. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 15, characterized in that: The device further comprises a detection sensor, which detects the pressing force between the wire pressing piece and the wire pressing surface of each wire pressing device (3.2) in the wire pressing device (3). The detection sensor corresponds to the wire pressing device (3.2) one by one, and is arranged between the wire pressing seat and the wire pressing frame (3.1) of the corresponding wire pressing device (3.2), or between the wire pressing piece and the elastic element of the corresponding wire pressing device (3.2).

19. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to any one of claims 1 to 7, characterized in that: It also includes a detection sensor, which detects the pressing force between the wire pressing piece and the wire pressing surface of each wire pressing device (3.2) in the wire pressing device (3).

20. The device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to claim 19, wherein: It also includes a support (6), the pressing portion (4) is mounted on the support (6), and the detection sensor is arranged between the support (6) and the pressing portion (4).

21. An embroidery machine, characterized in that: The invention comprises the device for automatically adjusting the tightness of embroidery thread of an embroidery machine according to any one of claims 1 to 20.

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