Embroidery thread monitoring device of embroidery machine

Abstract

The invention relates to the technical field of embroidery machines, and provides an embroidery thread monitoring device of an embroidery machine, the embroidery thread monitoring device comprises a box body and a mounting frame matched with the box body, the box body is provided with a plurality of groups of threading holes for embroidery threads to pass through, one side, facing the mounting frame, of the box body is open, and a parallel light source and a shading plate are arranged in the box body; light-transmitting grooves in one-to-one correspondence with the wiring hole groups are formed in the shading plate; concave lenses in one-to-one correspondence with the light-transmitting grooves and sensing assemblies in one-to-one correspondence with the concave lenses are arranged in the mounting frame in parallel; the sensing assembly comprises two first strip-shaped pieces and two second strip-shaped pieces, and a plurality of light sensing heads are arranged on the two first strip-shaped pieces and the two second strip-shaped pieces; the embroidery thread is monitored through the light response principle, the structure is simple, the software and hardware requirements are low, the embroidery thread monitoring cost of the embroidery machine is effectively reduced, and the embroidery production benefits of enterprises are improved.

Description

Technical Field

[0001] This invention relates to the field of embroidery machine technology, specifically to an embroidery machine thread monitoring device. Background Technology

[0002] As an important piece of equipment in the modern textile industry, the level of automation and intelligence of embroidery machines plays a crucial role in improving embroidery efficiency and quality. In the automated embroidery production process, the quality of embroidery thread directly affects the overall quality of the embroidery. Due to various factors such as raw material quality, manufacturing process, storage environment, and transportation conditions, some sections of the embroidery thread may experience problems such as knotting, loosening and thickening of fibers, or being too thin and about to break. In order to avoid affecting the final quality and effect of the embroidery, monitoring the quality of embroidery thread has become an indispensable part of embroidery machines.

[0003] Currently, most embroidery thread quality monitoring methods use visual monitoring. This involves capturing images of the embroidery thread with a camera, then processing the images and using recognition algorithms to determine the quality. Visual monitoring has high requirements for both hardware and software. To accurately capture images of the embroidery thread, high-resolution cameras and powerful image processing capabilities are often required. Furthermore, the maintenance of visual monitoring is quite complex. These factors contribute to the persistently high cost of embroidery thread monitoring, which affects the production efficiency of enterprises.

[0004] Therefore, the present invention proposes an embroidery thread monitoring device for embroidery machines to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an embroidery thread monitoring device for embroidery machines to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An embroidery thread monitoring device for an embroidery machine includes a housing and a mounting frame adapted to the housing. The housing has several sets of thread holes for the embroidery thread to pass through. The housing is open on one side facing the mounting frame, and a parallel light source and a light shield are provided inside the housing. The light shield has light-transmitting slots that correspond one-to-one with the thread hole groups. Concave lenses and sensing components that correspond one-to-one with the light-transmitting slots are arranged in parallel inside the mounting frame. The corresponding light-transmitting slots, concave lenses, and sensing components are arranged in a three-point line, and the concave lenses are located between the light-transmitting slots and the sensing components. The sensing component includes two first strips and two second strips. Multiple photosensitive heads are arranged on each of the two first strips and the two second strips. When the embroidery thread detection meets the usage requirements, all photosensitive heads on the two first strips are in a continuous light response state, while all photosensitive heads on the two second strips are in a continuous no-light response state.

[0007] In one alternative: the mounting frame is provided with a detachable inner frame, and a plurality of the concave lenses are arranged in parallel on the inner frame.

[0008] In one alternative: the mounting frame can move closer to / away from the housing to make closed contact with and separate from the housing; the housing is provided with a plurality of limiting posts inserted into the mounting frame; a rotatable bidirectional threaded rod is provided through the housing; the bidirectional threaded rod has a path consistent with the direction of the light-transmitting groove and does not intersect with the vertical projection between any light-transmitting groove; both segments of the bidirectional threaded rod with opposite thread directions are fitted with threaded internal thread sleeves; and a support rod is hinged between the two internal thread sleeves and the mounting frame.

[0009] In one alternative: the spacing between the two first strips and the spacing between the two second strips in the sensing component can be adjusted at a constant midpoint to suit the detection requirements of different fineness embroidery threads.

[0010] In one alternative embodiment: the mounting frame has slots on both sides, and the ends of the two first strips and two second strips in each sensing component can be slidably engaged in the slots. The housing is provided with a rotatable first adjusting rod and a second adjusting rod. The first adjusting rod is threaded through the second strip in each sensing component, and the threads on the two segments of the first adjusting rod that mate with the same set of second strips are opposite in direction. Each first strip in each sensing component has a first through hole for the first adjusting rod to pass through. The second adjusting rod is threaded through the first strip in each sensing component, and the threads on the two segments of the second adjusting rod that mate with the same set of first strips are opposite in direction. Each second strip in each sensing component has a second through hole for the second adjusting rod to pass through.

[0011] In one alternative embodiment, the mounting frame is provided with two driving components for respectively driving the first adjusting rod and the second adjusting rod to rotate.

[0012] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows: The embroidery thread is monitored using the principle of photoresponse. The fineness of the thread directly affects the angle of the dark area. When the thread becomes thinner, it blocks less light, resulting in a smaller angle of the dark area. When either of the two photosensitive heads on the second strip detects light, the thread quality is determined to be abnormal. Conversely, when the thread becomes thicker, it blocks more light, resulting in a larger angle of the dark area. When the angle of the dark area becomes so large that either of the two photosensitive heads on the first strip loses its photoresponse, the thread quality is determined to be abnormal. The structure is simple, and the hardware and software requirements are low, effectively reducing the cost of embroidery thread monitoring in embroidery machines and improving the efficiency of embroidery production for enterprises.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is a three-dimensional schematic diagram of the concave lens in this invention.

[0017] Figure 3 This is a front view of the box, the light shield, and the parallel light source in this invention.

[0018] Figure 4 This is a schematic diagram showing the arrangement between the box and the light shield in this invention.

[0019] Figure 5 This is a schematic diagram showing the arrangement between the mounting frame and multiple sets of sensing components in this invention.

[0020] Figure 6 This is a front view of the inner frame and multiple concave lenses in this invention.

[0021] Figure 7 This is a schematic diagram illustrating the working principle of the present invention.

[0022] Figure 8 This is a front view of the mounting frame, multiple sets of sensing components, the first adjusting rod, and the second adjusting rod of the present invention.

[0023] Figure 9 for Figure 8 Enlarged view of point A in the middle.

[0024] Figure label annotations: 1-box body, 2-light shield, 3-limiting post, 4-mounting frame, 5-sensing component, 501-first strip, 502-light sensor head, 503-second strip, 504-first through hole, 505-second through hole, 6-inner frame, 7-concave lens, 8-support rod, 9-bidirectional threaded rod, 10-internal threaded sleeve, 11-parallel light source, 12-light transmission groove, 13-first adjusting rod, 14-second adjusting rod, 15-drive component, 16-wiring hole. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Please see Figures 1 to 7 An embroidery thread monitoring device for an embroidery machine includes a housing 1 and a mounting frame 4 adapted to the housing 1. The housing 1 is provided with a plurality of thread holes 16 for the embroidery thread to pass through. The housing 1 is open on one side facing the mounting frame 4. The housing 1 is provided with a parallel light source 11 and a light shield 2. The light shield 2 is provided with light-transmitting grooves 12 that correspond one-to-one with the thread holes 16. The mounting frame 4 is provided with concave lenses 7 that correspond one-to-one with the light-transmitting grooves 12 and sensing components 5 that correspond one-to-one with the concave lenses 7. The corresponding light-transmitting grooves 12, concave lenses 7 and sensing components 5 are arranged in a three-point line, and the concave lenses 7 are located between the light-transmitting grooves 12 and the sensing components 5. The sensing component 5 includes two first strips 501 and two second strips 503. Multiple photosensitive heads 502 are arranged on both the two first strips 501 and the two second strips 503. When the embroidery thread detection meets the usage requirements, all photosensitive heads 502 on the two first strips 501 are in a continuous light response state, while all photosensitive heads 502 on the two second strips 503 are in a continuous no-light response state.

[0027] The embroidery thread transmission path traverses the housing 1. A set of thread holes 16 corresponds to one embroidery thread. Parallel light is generated by the parallel light source 11 and emitted through the light-transmitting groove 12, illuminating the embroidery thread. Part of the light is blocked by the embroidery thread, while the unblocked light is refracted by the concave lens 7. When the embroidery thread meets the usage requirements (normal fineness and no knots), the light passing through the concave lens 7 will create a dark area due to the light-blocking effect of the embroidery thread, causing all the photosensitive heads 502 on the two second strip components 503 to be in a continuous dark response state. The unblocked light, after being refracted by the concave lens 7, will be sensed by the photosensitive heads 502 on the two first strip components 501 and will be in a continuous light response state (e.g., Figure 7As shown, the fineness of the embroidery thread directly affects the angle of the dark area. When the thread becomes thinner, the amount of light blocked decreases, resulting in a smaller angle of the dark area. When either of the two second strip components 503's photosensitive heads 502 senses light (photoresponse), the embroidery thread quality is determined to be abnormal. Conversely, when the thread becomes thinner (knotting, loosening, or thickening of fibers), the amount of light blocked increases, resulting in a larger angle of the dark area. When the angle of the dark area becomes so large that either of the two first strip components 501's photosensitive heads 502 loses its photoresponse, the embroidery thread quality is determined to be abnormal. When the embroidery thread quality is determined to be abnormal, the embroidery machine stops and an alarm sounds. The embroidery thread is monitored through the photoresponse principle. The structure is simple, and the hardware and software requirements are low, effectively reducing the cost of embroidery thread monitoring and improving the efficiency of embroidery production for enterprises.

[0028] It should be noted that the purpose of setting the concave lens 7 is to amplify the optical path, thereby providing sufficient space to set the corresponding sensing component 5. In addition, the light sensing technology is existing technology, so it will not be described in detail here.

[0029] Please see Figure 1 and Figure 6 In one embodiment of the present invention, the mounting frame 4 is provided with a detachable inner frame 6, and a plurality of concave lenses 7 are arranged in parallel on the inner frame 6. The inner frame 6 may be detachably set in the mounting frame 4 by means of bolts, buckles or other means. This embodiment is not limited here. The detachable setting of the inner frame 6 facilitates the cleaning and maintenance of the concave lenses 7.

[0030] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the mounting frame 4 can move closer to / away from the box 1 to close contact with and separate from the box 1. A plurality of limiting posts 3 inserted into the mounting frame 4 are arranged on the box 1. A rotatable bidirectional threaded rod 9 is provided through the box 1. The path of the bidirectional threaded rod 9 is consistent with the direction of the light-transmitting groove 12 and does not intersect with the vertical projection between any of the light-transmitting grooves 12. Both segments of the bidirectional threaded rod 9 with opposite thread directions are fitted with threaded internal thread sleeves 10. Support rods 8 are hinged between the two internal thread sleeves 10 and the mounting frame 4.

[0031] In this embodiment, the mounting frame 4 moves closer to / away from the box 1 by rotating the bidirectional threaded rod 9 to achieve closed contact and separation with the box 1. When preparing for monitoring, the mounting frame 4 is in a separated state from the box 1, which facilitates the operation of the embroidery thread through the wiring hole 16. During monitoring, the mounting frame 4 is in a closed contact state with the box 1 to avoid foreign objects accidentally entering between the box 1 and the mounting frame 4 and blocking the light, which could lead to misjudgment of the monitoring.

[0032] Please see Figure 5, Figure 8 and Figure 9 In one embodiment of the present invention, the distance between the two first strips 501 and the distance between the two second strips 503 in the sensing component 5 can be adjusted at a constant midpoint to suit the detection requirements of different fine embroidery threads. The mounting frame 4 has slots on both sides. The ends of the two first strips 501 and the two second strips 503 in each sensing component 5 can be slidably locked in the slots. The housing 1 is provided with a rotatable first adjusting rod 13 and a second adjusting rod 14. The first adjusting rod 13 is threaded through the second strip 503 in each sensing component 5, and the threads on the two segments of the first adjusting rod 13 that cooperate with the second strip 503 in the same group are opposite in direction. Each first strip 501 in each sensing component 5 is provided with a first through hole 504 for the first adjusting rod 13 to pass through. The second adjusting rod 14 is threaded through the first strip 501 in each sensing component 5, and the threads on the two segments of the second adjusting rod 14 that cooperate with the first strip 501 in the same group are opposite in direction. Each second strip 503 in each sensing component 5 is provided with a second through hole 505 for the second adjusting rod 14 to pass through. The mounting frame 4 is provided with two driving components 15 for driving the first adjusting rod 13 and the second adjusting rod 14 to rotate respectively (the driving components 15 are rotating devices such as geared motors and servo motors in the prior art, which will not be described in detail here).

[0033] In this embodiment, since the thickness of the embroidery thread required for different batches of embroidery varies (some embroidery requires thicker thread, while others require thinner thread), the first adjusting rod 13 and the second adjusting rod 14 are driven to rotate by two driving components 15 according to the thickness of the embroidery thread used by the embroidery machine, thereby adjusting the distance between the two first strips 501 and the distance between the two second strips 503 in all sensing components 5, so as to meet the detection requirements of different fineness of embroidery thread (the distance setting of the two first strips 501 and the distance setting of the two second strips 503 represent the two extreme values ​​of the fineness of the embroidery thread to be monitored. When the embroidery thread to be monitored is thicker, the distance setting of the two first strips 501 and the distance setting of the two second strips 503 are increased accordingly, and vice versa).

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An embroidery thread monitoring device for an embroidery machine, characterized in that, The device includes a housing (1) and a mounting frame (4) adapted to the housing (1). The housing (1) is provided with several sets of thread holes (16) for embroidery thread to pass through. The housing (1) is open on one side facing the mounting frame (4). The housing (1) is provided with a parallel light source (11) and a light shield (2). The light shield (2) is provided with light-transmitting grooves (12) that correspond one-to-one with the thread holes (16). The mounting frame (4) is provided with concave lenses (7) that correspond one-to-one with the light-transmitting grooves (12) and sensing components (5) that correspond one-to-one with the concave lenses (7). The corresponding light-transmitting grooves (12), concave lenses (7) and sensing components (5) are arranged in a three-point line, and the concave lenses (7) are located between the light-transmitting grooves (12) and the sensing components (5). The sensing component (5) includes two first strips (501) and two second strips (503). Multiple photosensitive heads (502) are arranged on both the two first strips (501) and the two second strips (503). When the embroidery thread detection meets the usage requirements, all photosensitive heads (502) on the two first strips (501) are in a continuous light response state, while all photosensitive heads (502) on the two second strips (503) are in a continuous no-light response state.

2. The embroidery thread monitoring device for an embroidery machine according to claim 1, characterized in that, The mounting frame (4) has a detachable inner frame (6) inside, and multiple concave lenses (7) are arranged in parallel on the inner frame (6).

3. The embroidery thread monitoring device for an embroidery machine according to claim 1, characterized in that, The mounting frame (4) can move closer to / away from the box (1) to close contact with and separate from the box (1). Several limiting posts (3) inserted into the mounting frame (4) are arranged on the box (1). A rotatable bidirectional threaded rod (9) is provided through the box (1). The bidirectional threaded rod (9) has a path that is consistent with the direction of the light-transmitting groove (12) and does not intersect with the vertical projection between any light-transmitting groove (12). The two rod segments with opposite thread directions of the bidirectional threaded rod (9) are fitted with threaded internal thread sleeves (10). Support rods (8) are hinged between the two internal thread sleeves (10) and the mounting frame (4).

4. The embroidery thread monitoring device for an embroidery machine according to claim 1, characterized in that, The spacing between the two first strips (501) and the spacing between the two second strips (503) in the sensing component (5) can be adjusted at a constant midpoint to meet the detection requirements of different fine embroidery threads.

5. The embroidery thread monitoring device for an embroidery machine according to claim 4, characterized in that, The mounting frame (4) has slots on both sides. The ends of the two first strips (501) and the two second strips (503) in each sensing component (5) can be slidably locked in the slots. The housing (1) is provided with a rotatable first adjusting rod (13) and a second adjusting rod (14). The first adjusting rod (13) is threaded through the second strip (503) in each sensing component (5), and the threads on the two rod segments of the first adjusting rod (13) that mate with the same set of second strips (503) are in opposite directions. Each of the sensing components (5) has a first strip (501) for the first adjusting rod (13) to pass through a first through hole (504). The second adjusting rod (14) is threaded through the first strip (501) in each sensing component (5). The threads on the two rod segments of the second adjusting rod (14) that cooperate with the first strip (501) in the same group are opposite in direction. Each of the sensing components (5) has a second strip (503) for the second adjusting rod (14) to pass through a second through hole (505).

6. The embroidery thread monitoring device for an embroidery machine according to claim 5, characterized in that, The mounting frame (4) is provided with two driving components (15) for driving the first adjusting rod (13) and the second adjusting rod (14) to rotate respectively.

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