Steel needle monitoring device for needle plate of setting machine

Abstract

The utility model relates to the technical field of textile printing and dyeing equipment, in particular to a setting machine needle plate steel needle monitoring device. The setting machine needle plate steel needle monitoring device comprises an image shooting mechanism, a control mechanism, a housing and a heat dissipation assembly, and the image shooting mechanism is installed on a setting machine and used for shooting an image of the steel needle side of a needle plate; the control mechanism is in signal connection with the image shooting mechanism and is used for judging whether the needle plate lacks needles and / or is broken according to the image; the housing covers the outside of the image shooting mechanism and is provided with a light transmitting part through which a light path of the image shooting mechanism passes; the heat dissipation assembly is arranged on the housing. According to the utility model, whether the needle plate lacks needles and / or is broken needles can be rapidly and timely detected, and long-term stable work can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of textile printing and dyeing equipment, in particular to a monitoring device for steel needles on a needle plate of a setting machine. Background Art

[0002] The stenter is a dyeing and finishing equipment, mainly used in the stentering and stenting process of fabrics. The stenter uses heat to change the structure and performance of the fabric to obtain the expected wearing effect. The stenter needle plate includes a plate body and a steel needle. The steel needle is fixedly installed on the plate body, and the plate body is fixedly installed on the needle plate conveyor chain of the stenter. The plate body and the steel needle are generally made of steel. In the process of stentering and stenting, the two edges of the fabric need to be inserted into the steel needle to achieve the widthwise stretching and traction of the fabric. In actual working conditions, the steel needle will be worn out after long-term use. The steel needle will become uneven, the fabric expansion tension is adjusted too large, the temperature of the machine is too high and the steel needle becomes brittle, the machine is not adjusted in place, and the plate body and steel needle are not cleaned thoroughly. These problems will cause the steel needle to break.

[0003] At present, the monitoring of the needle plate condition mainly relies on human eye detection, which is delayed and labor-intensive, resulting in long machine downtime and low efficiency of the entire production. There are also methods of collecting needle plate images through image capture mechanisms such as cameras, but due to the limitations of the working environment, the image capture mechanism is prone to adhesion of loose debris such as waste cloth scraps, fluff, and thread ends, which affects the camera's work and heat dissipation, and frequent wiping of the lens will affect the lens's service life and image clarity. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a needle plate steel needle monitoring device for a setting machine, which can quickly and timely detect whether the needle plate is short of needles and / or broken needles, and can ensure long-term stable operation.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a device for monitoring the steel needles of a needle plate of a setting machine, comprising:

[0006] An image shooting mechanism, installed on the setting machine, is used to shoot an image of the steel needle side of the needle plate;

[0007] A control mechanism, connected to the image capturing mechanism by signal, for determining whether the needle plate is missing a needle and / or has a broken needle according to the image;

[0008] A cover shell, covering the image capturing mechanism, and having a light-transmitting portion for allowing the light path of the image capturing mechanism to pass through;

[0009] The heat dissipation component is arranged on the cover shell.

[0010] Furthermore, the heat dissipation assembly includes a heat dissipation fan, which is arranged at a position of the housing opposite to the light-transmitting portion.

[0011] In order to enable the image capturing mechanism to be moved by the fabric stretching mechanism, thereby ensuring that the position of the needle plate in the field of view of the image acquisition mechanism remains unchanged, the image capturing mechanism is installed on the fabric stretching mechanism of the setting machine.

[0012] Furthermore, the control mechanism is also used to determine whether there are loose particles and debris accumulated on the needle plate based on the image.

[0013] In order to more conveniently install the image capturing mechanism on the molding machine, the molding machine needle plate steel needle monitoring device also includes a mounting bracket, and the image capturing mechanism is installed on the molding machine through the mounting bracket.

[0014] In order to further facilitate the adjustment of the tilt angle of the image capturing mechanism, the mounting bracket includes:

[0015] A first bracket part, mounted on the setting machine;

[0016] A second bracket part, rotatably mounted on the first bracket part, and the image capturing mechanism is mounted thereon;

[0017] The locking assembly is arranged between the first bracket part and the second bracket part to lock the position of the second bracket part after the second bracket part is rotated into place.

[0018] A specific structure of a locking assembly is further provided, the locking assembly comprising a locking bolt, one of the first bracket part and the second bracket part is provided with an arc groove with the rotation center point of the second bracket part as the center of the circle, and the other is provided with a mounting hole facing the arc groove, the locking bolt passes through the arc groove and is threadedly connected to the mounting hole or passes through the arc groove and the mounting hole at the same time and is screwed with a nut.

[0019] In order to further fine-tune the height and horizontal position of the image capturing mechanism, the first bracket portion includes:

[0020] A lower connecting part, the lower end of which is provided with a plurality of vertical strip grooves extending in the vertical direction, and mounting bolts pass through the vertical strip grooves to mount the lower connecting part on the setting machine;

[0021] The upper connecting part, one of its lower end and the upper end of the lower connecting part is provided with a plurality of horizontal strip grooves, and the other is provided with a plurality of through holes, and the mounting bolts pass through the horizontal strip grooves and the through holes at the same time to connect the upper connecting part and the lower connecting part as a whole, and the second bracket part is rotatably installed on the upper connecting part.

[0022] Furthermore, the image capturing mechanism includes an industrial camera.

[0023] Furthermore, the industrial camera is a SWIR smart camera.

[0024] After adopting the above technical solution, the utility model can timely, conveniently and quickly monitor whether the needle plate has missing needles and / or broken needles through the cooperation of the image capture mechanism and the control mechanism. Considering the environment in which the image capture mechanism is located, a cover is provided to effectively prevent the image capture mechanism body and the lens from accumulating cloth scraps, fluff, thread ends and other loose debris and oil stains, and prevent the lens from being contaminated and blocked, thereby reducing the frequency of lens cleaning, extending the service life, and preventing debris from entering the interior of the image capture mechanism and affecting the operation of the image capture mechanism. A heat dissipation component is then configured on the cover to effectively prevent the image capture mechanism from being overheated due to being in a closed environment surrounded by the cover, thereby ensuring that the image capture mechanism and even the entire shaping machine needle plate steel needle monitoring device can work stably and for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a setting machine with the setting machine needle plate steel needle monitoring device of the utility model;

[0026] Figure 2 for Figure 1 A magnified view of part A;

[0027] Figure 3 for Figure 1 A partial enlarged view of the AA section view;

[0028] Figure 4 It is a structural schematic diagram of the parts of the image shooting mechanism setting machine needle plate steel needle monitoring device of the utility model except the control mechanism;

[0029] Figure 5 for Figure 4 A cross-sectional view of

[0030] Figure 6 It is a structural schematic diagram of the image capturing mechanism of the utility model installed on the mounting bracket;

[0031] In the figure, 1, image capturing mechanism; 2, shaping machine; 21, fabric stretching mechanism; 3, needle plate; 4, control mechanism; 5, cover; 6, heat dissipation assembly; 7, mounting bracket; 71, first bracket part; 711, lower connecting part; 7111, vertical strip groove; 712, upper connecting part; 7121, horizontal strip groove; 72, second bracket part; 721, arc groove. DETAILED DESCRIPTION

[0032] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0033] Embodiment 1

[0034] like Figure 1-Figure 6 As shown, a device for monitoring steel needles on a needle plate of a setting machine comprises:

[0035] An image capturing mechanism 1 is used to capture an image of the steel needle side of a needle plate 3 of a setting machine 2;

[0036] The control mechanism 4 is connected to the image capturing mechanism 1 by signal, and is used to judge whether the needle plate 3 is missing a needle and / or a needle is broken according to the image;

[0037] A cover 5, covering the image capturing mechanism 1, having a light-transmitting portion for allowing the light path of the image capturing mechanism 1 to pass through;

[0038] The heat dissipation component 6 is disposed on the housing 5 .

[0039] Specifically, this embodiment can monitor whether the needle plate 3 is missing and / or broken in a timely, convenient and fast manner through the cooperation of the image capture mechanism 1 and the control mechanism 4. Considering the environment in which the image capture mechanism 1 is located, the cover 5 is provided to effectively prevent the image capture mechanism 1 from accumulating cloth scraps, fluff, thread ends and other loose debris and oil stains on the body and lens of the image capture mechanism 1, prevent the lens from being polluted and blocked, reduce the frequency of lens cleaning, extend the service life, and prevent debris from entering the interior of the image capture mechanism 1 and affecting the operation of the image capture mechanism 1. The heat dissipation component 6 is then arranged on the cover 5, which can effectively prevent the image capture mechanism 1 from being in a closed environment surrounded by the cover 5, resulting in excessive temperature, thereby ensuring that the image capture mechanism 1 and even the entire shaping machine needle plate steel needle monitoring device can work stably for a long time.

[0040] The heat dissipation component 6 can be arranged at a position of the housing 5 opposite to the light-transmitting portion. Of course, it can also be arranged at other positions of the housing 5. The heat dissipation component 6 can be a heat dissipation fan, a liquid cooling plate, etc. The light-transmitting portion can be a plate that can allow light to pass through, such as a glass plate, an acrylic plate, a transparent plastic plate, etc.; it can also be a hollow area without any shielding, and the hollow area is connected to the needle plate cover of the shaping machine 2 that covers the outside of the needle plate 3.

[0041] Preferably, the heat dissipation component 6 is a heat dissipation fan, which is arranged at a position of the cover 5 opposite to the light-transmitting portion. The heat dissipation fan can be configured to blow cold air into the cover 5, or it can be configured to blow out the hot air in the cover 5. The specific configuration depends on the actual situation of the production line. When the heat dissipation fan is configured to blow cold air into the cover 5, a dustproof layer is also provided on the air inlet side of the heat dissipation fan to filter the cold air entering the cover 5. The temperature at the needle plate 3 is relatively high, and there are relatively more loose impurities. For the entire cover 5, its light-transmitting portion is relatively close to the needle plate 3. The heat dissipation fan is arranged at a position away from the light-transmitting portion, that is, away from the needle plate 3. On the one hand, it can ensure that the air blown into the cover 5 is cold air, and on the other hand, it can minimize the content of loose impurities in the airflow. When the cooling fan is configured to blow out the hot air in the cover 5, the cooling fan is arranged at a position of the cover 5 opposite to the light-transmitting portion, that is, at a position opposite to the light-transmitting portion. This can effectively prevent the cooling fan from blowing loose debris such as cloth scraps, fluff, and thread ends onto the needle plate 3, thereby reducing the speed at which loose debris accumulates on the needle plate 3 to a certain extent.

[0042] More preferably, the heat dissipation component 6 is a heat dissipation fan, which is arranged at a position of the cover shell 5 opposite to the light-transmitting portion. The heat dissipation fan is configured to blow cold air toward the cover shell 5. The light-transmitting portion is a hollow area, which is connected to the needle plate cover of the shaping machine 2 that is covered outside the needle plate 3.

[0043] Considering that the needle plate 3 is prone to accumulation of material stains, forming material stain balls, and a large amount of loose debris such as waste cloth scraps, fluff, and thread ends; if the damage to the needle plate 3 and the accumulation of loose debris are not monitored and handled in time, it will cause poor needle application of the fabric, easy needle and cloth falling off, resulting in inconsistent fabric width, directly affecting the shaping effect, causing huge losses to fabric processing, and reducing fabric quality. In addition, if the loose debris is not monitored and cleaned in time, it will also affect the needle shortage and / or broken needle monitoring to a certain extent. Therefore, in this embodiment, the control mechanism 4 is also used to determine whether the needle plate 3 has loose debris accumulation based on the image. The control mechanism 4 identifies the loose debris based on the image, issues an alarm in time, and facilitates quick cleaning, so that the fabric can be quickly applied, preventing the fabric from detaching from the needle plate 3, avoiding the fabric from being stained with oil, lint and other stains, and extending the service life of the needle plate 3.

[0044] The image capturing mechanism 1 is preferably installed on the fabric stretching mechanism 21 of the setting machine 2. The two rows of chains of the setting machine 2 can be controlled by the fabric stretching mechanism 21 to move left and right, thereby adjusting the width of the fabric. Therefore, the image capturing mechanism 1 is installed on the fabric stretching mechanism 21 of the setting machine 2 and moves with it, that is, the image capturing mechanism 1 is driven by the fabric stretching mechanism 21 to move, thereby ensuring that the position of the needle plate 3 in the field of view of the image capturing mechanism 1 remains unchanged, so that the image of the steel needle side of the needle plate 3 can always be cleanly captured.

[0045] The image capturing mechanism 1 may be an industrial camera, which is assisted by a camera light source during operation to ensure that a clear image can be captured. The specific type of the industrial camera may be a SWIR smart camera, or a visible light smart detection camera, preferably a SWIR smart camera.

[0046] Compared with ordinary cameras that are only sensitive to visible light, SWIR smart cameras have stronger penetrating power. Therefore, SWIR smart cameras have the ability to penetrate the obstruction of loose debris such as material stains, accumulated large amounts of waste cloth scraps, fluff, thread ends and other debris, lock the steel needles on the plate, image the steel needles normally, and accurately monitor the loss of steel needles. In addition, since loose debris has specific emissivity and absorption characteristics in the short-wave infrared band, during the image analysis process, the control mechanism 4 also uses these characteristics to better identify these loose debris according to the image, give an alarm in time, and clean quickly, so as to facilitate the insertion of the two edges of the fabric into the steel needles hanging on the needle plate, prevent the fabric from detaching from the needle plate, avoid the fabric from being stained with oil, lint and other stains, and extend the service life of the needle plate 3. Moreover, in the process of the needle plate 3 pulling and shaping the fabric, since the steel needles of the shaping machine needle plate 3 need to continuously penetrate into the fabric, the friction between the fabric and the steel needles will generate a lot of heat, and the needle plate 3 will overheat. Therefore, the overheated needle plate 3 will not only damage the fabric, but also easily cause the embrittlement of the steel needles. It is necessary to monitor the temperature and alarm in time. The SWIR smart camera can also use short-wave infrared temperature measurement to image and measure the temperature of the needle plate 3 on the shaping machine chain, which can greatly eliminate the influence of the tailing effect and obtain a clear, accurate and real-time temperature distribution image. It can monitor hot spots or thermal obstacles in time, which is helpful to find potential problems early, avoid the embrittlement of the steel needles caused by the high temperature of the needle plate 3, reduce the operating cost of the equipment, prevent the overheated needle plate 3 from damaging the fabric, improve the wearing performance of the fabric, and help to find potential problems early, so that the operator can take timely measures to maintain the stability and safety of the production process, which is also very important for the heat shaping production process of the shaping machine.

[0047] The control mechanism 4 can be an industrial computer or a control device inside an industrial camera. In practical applications, it can be selected according to actual needs. The control mechanism 4 receives the image captured by the image capturing mechanism 1. In addition to detecting missing and / or broken needles and loose debris, it can also monitor the looseness of the screws of the needle plate 3, the skewness of the needle plate 3, and whether the total number of needle plates 3 carried by the chains on both sides is missing, etc., to avoid uneven needles on the fabric, the moon-shaped needles falling off when the fabric is formed, and improve the quality of the fabric.

[0048] Two image capturing mechanisms 1 are provided, and each image capturing mechanism 1 is used to capture the image of one of the left and right needle plates 3. The image capturing mechanism 1 can be operated synchronously with the setting machine to continuously capture images at preset time intervals.

[0049] Embodiment 2

[0050] Based on the first embodiment, Figure 2-Figure 6 As shown, the setting machine needle plate steel needle monitoring device also includes a mounting bracket 7, and the image shooting mechanism 1 is mounted on the setting machine 2 through the mounting bracket 7. The cover 5 can be mounted on the mounting bracket 7, and can also be directly mounted on the setting machine 1.

[0051] Specifically, by providing the mounting bracket 7 , the image capturing mechanism 1 can be conveniently mounted on the setting machine 2 .

[0052] The mounting bracket 7 may be a conventional structure or a structure capable of adjusting the tilt angle of the image capturing mechanism 1 , and the latter is preferred. Figure 2-Figure 6 The structure shown in the figure is capable of adjusting the tilt angle of the image capturing mechanism 1, specifically comprising:

[0053] The first bracket part 71 is mounted on the setting machine 2;

[0054] The second bracket part 72 is rotatably mounted on the first bracket part 71, and the image capturing mechanism 1 is mounted thereon;

[0055] The locking assembly is disposed between the first bracket portion 71 and the second bracket portion 72 to lock the position of the second bracket portion 72 after the second bracket portion 72 rotates to a desired position.

[0056] The second bracket portion 72 is formed by bending a metal plate and has two parts perpendicular to each other. One part is rotatably connected to the first bracket portion 71 through a pin shaft, and the image capturing mechanism 1 is installed on the other part.

[0057] Among them, the structure of the locking assembly can be various, for example, the locking assembly includes a locking bolt, one of the first bracket part 71 and the second bracket part 72 is provided with an arc groove 721 with the rotation center point of the second bracket part 72 as the center of the circle, and the other is provided with a mounting hole facing the arc groove 721, and the locking bolt passes through the arc groove 721 and is threadedly connected with the mounting hole, or passes through the arc groove 721 and the mounting hole at the same time and is screwed with a nut. In this way, the tilt angle of the image shooting mechanism 1 can be adjusted steplessly, and adjusted to a suitable angle as needed, so as to capture a clear image.

[0058] Embodiment 3

[0059] Based on the second embodiment, Figure 3 , 4 As shown in , 5 and 6, the first bracket portion 71 includes:

[0060] The lower connecting part 711 has a plurality of vertical strip grooves 7111 extending in the vertical direction at its lower end, and mounting bolts pass through the vertical strip grooves 7111 to mount the lower connecting part 711 on the setting machine 2;

[0061] The upper connecting part 712, one of its lower end and the upper end of the lower connecting part 711 is provided with a plurality of horizontal strip grooves 7121, and the other is provided with a plurality of through holes, and the mounting bolts pass through the horizontal strip grooves 7121 and the through holes at the same time to connect the upper connecting part 712 and the lower connecting part 711 as a whole, and the second bracket part 72 is rotatably installed on the upper connecting part 712.

[0062] With such arrangement, the height and the horizontal position of the image capturing mechanism 1 can be fine-tuned, thereby increasing the flexibility of use.

[0063] The upper connecting portion 712 and the lower connecting portion 711 may also be formed by bending metal plates respectively.

[0064] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A device for monitoring steel needles of a needle plate of a setting machine, characterized in that: include: An image capturing mechanism (1) is used to capture an image of the steel needle side of a needle plate (3) of a setting machine (2); A control mechanism (4) is connected to the image capturing mechanism (1) by signals and is used to determine whether the needle plate (3) is missing a needle and / or has a broken needle based on the image; A cover (5) covers the image capturing mechanism (1) and has a light-transmitting portion for allowing the light path of the image capturing mechanism (1) to pass through; A heat dissipation component (6) is arranged on the housing (5).

2. The device for monitoring the steel needle of the needle plate of the setting machine according to claim 1, characterized in that: The heat dissipation assembly (6) comprises a heat dissipation fan, which is arranged at a position of the housing (5) opposite to the light-transmitting portion.

3. The device for monitoring the steel needle of the needle plate of the setting machine according to claim 1, characterized in that: The image capturing mechanism (1) is installed on the fabric stretching mechanism (21) of the setting machine (2).

4. The device for monitoring the steel needle of the needle plate of a setting machine according to claim 1, characterized in that: The control mechanism (4) is also used to determine whether there are accumulations of loose substances on the needle plate (3) based on the image.

5. The device for monitoring the steel needles of the needle plate of the setting machine according to claim 1, characterized in that: It also comprises a mounting bracket (7), and the image capturing mechanism (1) is mounted on the setting machine (2) via the mounting bracket (7).

6. The device for monitoring the steel needles of the needle plate of the setting machine according to claim 5, characterized in that: The mounting bracket (7) comprises: A first bracket part (71) is mounted on the setting machine (2); A second bracket part (72) is rotatably mounted on the first bracket part (71), and the image capturing mechanism (1) is mounted thereon; A locking assembly is arranged between the first bracket portion (71) and the second bracket portion (72) to lock the position of the second bracket portion (72) after the second bracket portion (72) is rotated into position.

7. The device for monitoring the steel needles of the needle plate of the setting machine according to claim 6, characterized in that: The locking assembly comprises a locking bolt, one of the first bracket part (71) and the second bracket part (72) is provided with an arcuate groove (721) with the rotation center point of the second bracket part (72) as the center of the circle, and the other is provided with a mounting hole facing the arcuate groove (721), and the locking bolt passes through the arcuate groove (721) and is threadedly connected with the mounting hole, or passes through the arcuate groove (721) and the mounting hole at the same time and is screwed with a nut.

8. The device for monitoring the steel needles of the needle plate of a setting machine according to claim 6, characterized in that: The first bracket portion (71) comprises: A lower connecting portion (711), the lower end of which is provided with a plurality of vertical strip grooves (7111) extending in the vertical direction, and mounting bolts pass through the vertical strip grooves (7111) to mount the lower connecting portion (711) on the setting machine (2); The upper connecting part (712) has a plurality of horizontal strip grooves (7121) at its lower end and an upper end of the lower connecting part (711), and the other one has a plurality of through holes. The mounting bolts pass through the horizontal strip grooves (7121) and the through holes at the same time to connect the upper connecting part (712) and the lower connecting part (711) as a whole. The second bracket part (72) is rotatably mounted on the upper connecting part (712).

9. The device for monitoring the steel needles of the needle plate of a setting machine according to claim 1, characterized in that: The image capturing mechanism (1) comprises an industrial camera.

10. The device for monitoring the steel needles of the needle plate of the setting machine according to claim 9, characterized in that: The industrial camera is a SWIR smart camera.

Images