Pre-shrinking machine

Abstract

The utility model is suitable for the field of textile processing, and discloses a pre-shrinking machine which comprises a rack, a first visual inspection camera, a second visual inspection camera, a feeding frame arranged at the feeding end of the rack, a steam wetting unit located on the rack, a rubber blanket shrinking unit and a wool blanket drying unit which are located below the rack, a discharging roller rotationally arranged on the rack and the like. According to the utility model, the first visual inspection camera used for shooting the surface of the fabric before preshrinking and finishing is arranged between the feeding frame and the steam conditioning unit, and meanwhile, the second visual inspection camera used for shooting the surface of the fabric after preshrinking and finishing is arranged above the discharging roller; therefore, the pictures shot by the two visual detection cameras can be analyzed through visual analysis software, manual work is further replaced to automatically obtain the warp and weft density of the fabric under the same area in the two pictures, and the warp shrinkage rate and the weft shrinkage rate of the fabric are obtained by comparing the warp density change and the weft density change of the fabric before and after preshrinking treatment.

Description

Technical Field

[0001] The utility model relates to the field of textile processing, in particular to a preshrinking machine. Background Art

[0002] During the processes of dyeing, printing and post - finishing of fabrics, the fabrics will inevitably be stretched by machines, so there is tension on the fabrics. However, the fabrics are prone to relieve the tension when encountering water, so the fabrics shrink severely after washing. To solve the above problems, a preshrinking machine is usually used to make the fabrics shrink in size under wet and hot conditions, so that the original potential shrinkage of the fabrics is pre - retracted before the finished products, in order to meet the shrinkage rate standard specified for textiles, and to prevent the fabrics and other textiles from shrinking when worn and washed after being processed into clothes.

[0003] The shrinkage rate is the percentage of the length of the fabric before and after being processed by the preshrinking machine. The traditional detection method is that the production personnel make marks with a ruler at the fabric feeding place during the driving process. After finishing, measure the value at the marked place at the fabric discharging place with a ruler, and then divide the difference between the two by the measured value at the feeding time to obtain the shrinkage rate of the fabric. Due to the subjective factors such as manual pulling and measurement of the fabric during the measurement process, the shrinkage rate obtained by the above - mentioned measurement method has a large error.

[0004] Some manufacturers also use a laser speed and length measuring device (such as the patent No. CN105953733B) to obtain the initial length and the final length of the fabric after shrinkage setting, so as to calculate the shrinkage rate of the fabric. However, the laser length measurement can only obtain the warp - wise shrinkage rate of the fabric, and the shrinkage rate in the weft direction (i.e., the width direction of the fabric) of the fabric cannot be automatically obtained by the instrument, and the shrinkage rate in the weft direction of the fabric is an important index for the fabric to be delivered to customers.

[0005] It can be seen that the existing technology still needs to be improved. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a preshrinking machine, aiming to solve the problem that the shrinkage rate in the weft direction of the fabric cannot be automatically detected by using a laser speed and length measuring device.

[0007] To achieve the above - mentioned purpose, the solution provided by the utility model is:

[0008] A preshrinking machine includes a frame, a feeding frame arranged at the feeding end of the frame, a steam humidifying unit arranged on the frame and downstream of the feeding unit, a rubber blanket fabric shrinking unit arranged below the frame and downstream of the steam humidifying unit, a woolen blanket drying unit downstream of the rubber blanket fabric shrinking unit, and a plurality of discharging rollers rotatably arranged on the frame. It further includes:

[0009] The first vision detection camera, which is fixedly arranged above the rack, and the first vision detection camera is located between the feeding rack and the steam humidifying unit.

[0010] The second vision detection camera, which is fixedly arranged above the discharging roller.

[0011] The central processing unit, which is electrically connected to the first vision detection camera and the second vision detection camera.

[0012] Wherein, both the first vision detection camera and the second vision detection camera are used to take photos of the fabric surface and feed the taken photos back to the central processing unit.

[0013] Preferably, the rack includes:

[0014] Two crossbeams, which are arranged in parallel.

[0015] At least two groups of support columns, with two support columns in each group, respectively used to support the two crossbeams.

[0016] Preferably, the pre-shrinking machine further includes a first mounting bracket and a second mounting bracket; the first mounting bracket and the second mounting bracket are respectively used to mount the first vision detection camera and the second vision detection camera, and both the first mounting bracket and the second mounting bracket include:

[0017] Two support frames, which are arranged oppositely and are respectively arranged on the upper parts of the two crossbeams.

[0018] The first mounting rod, the two ends of which are respectively connected to the inner sides of the two support frames, and the first mounting rod is perpendicular to the crossbeam in the horizontal direction.

[0019] Wherein, the first mounting rod is used to mount the first vision detection camera or the second vision detection camera.

[0020] Preferably, both the first mounting bracket and the second mounting bracket further include:

[0021] The second mounting rod, which is parallel to the first mounting rod, and the two ends of the second mounting rod are respectively connected to the inner sides of the two support frames.

[0022] The LED light box, which is arranged on the second mounting rod.

[0023] Wherein, the light emitted by the LED light box irradiates onto the fabric.

[0024] Preferably, the first mounting bracket further includes:

[0025] Two traction rollers, the length directions of the two traction rollers are both consistent with the length direction of the first mounting rod, and the heights of the two traction rollers are the same;

[0026] The traction rollers are located below the first mounting rod of the first mounting frame, and both ends of the traction rollers are rotatably connected to the support frame.

[0027] Preferably, a plurality of mounting holes are equidistantly spaced at the top of the first mounting rod; L-shaped mounting plates are detachably connected to the backs of the first vision detection camera and the second vision detection camera; an assembly hole matching the mounting hole is provided on the horizontal part of the mounting plate.

[0028] Preferably, the steam humidifying unit includes at least two rollers; the rollers are rotatably arranged between two cross beams, and the axial direction of the rollers is perpendicular to the cross beams; a chamber for accommodating steam is provided inside the rollers, and a plurality of steam outlet holes communicating with the chamber are provided on the barrel walls of the rollers.

[0029] Preferably, an inner cylinder is arranged inside the roller; the axial direction of the inner cylinder is consistent with the axial direction of the roller, and the outer wall of the inner cylinder and the inner wall of the roller are connected by a plurality of reinforcing plates, and exhaust holes are provided on the barrel wall of the inner cylinder.

[0030] Preferably, one end of the inner cylinder extends out of the roller and is connected with a rotary joint; the rotary joint is connected with a steam delivery pipeline.

[0031] Beneficial effects:

[0032] The utility model provides a pre-shrinking machine. By arranging a first vision detection camera for taking pictures of the surface of the fabric before pre-shrinking finishing between the feeding rack and the steam humidifying unit, and simultaneously arranging a second vision detection camera for taking pictures of the surface of the fabric after pre-shrinking finishing above the discharging roller, the pictures taken by the two vision detection cameras can be analyzed by vision analysis software, and further, the warp and weft densities of the fabric in the same area of the two pictures can be automatically obtained instead of by manual labor, and by comparing the changes in the warp density and the weft density of the fabric before and after pre-shrinking treatment, the warp shrinkage rate and the weft shrinkage rate of the fabric can be obtained.

[0033] In addition, the vision detection camera adopted by the utility model can also detect defects on the surface of the fabric, so as to be able to guide production and enable production personnel to more pertinently adjust the production process and process parameters of the fabric. Description of the drawings

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0035] Figure 1 It is a schematic structural diagram of the pre-shrinking machine provided by the present invention.

[0036] Figure 2 It is a schematic structure of the first mounting bracket Figure 1 。

[0037] Figure 3 is Figure 2 an enlarged view of part A in

[0038] Figure 4 is Figure 2 an enlarged view of part B in

[0039] Figure 5 It is a schematic structure of the first mounting bracket Figure 2 。

[0040] Figure 6 It is a schematic structural diagram of the second mounting bracket.

[0041] Figure 7 It is a schematic diagram of the structure of the roller.

[0042] Figure 8 It is a schematic diagram of the internal structure of the roller.

[0043] Explanation of the reference numerals in the drawings:

[0044] 1 - Frame; 101 - Cross beam; 102 - Support column;

[0045] 2 - Feeding frame;

[0046] 3 - Steam humidifying unit; 31 - Roller; 311 - Steam outlet hole; 32 - Inner cylinder; 321 - Exhaust hole; 33 - Reinforcing plate; 34 - Rotary joint;

[0047] 4 - Rubber blanket cloth shrinking unit; 5 - Felt drying unit; 6 - Discharge roller; 7 - First vision inspection camera; 8 - Second vision inspection camera;

[0048] 9a - First mounting bracket; 9b - Second mounting bracket; 91 - Support frame; 92 - First mounting rod; 921 - Mounting hole; 93 - Second mounting rod; 94 - Traction roller;

[0049] 10 - LED light box; 11 - Mounting plate. Detailed implementation manners

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0052] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0053] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0054] Please refer to Figures 1 to 6 , the present invention provides a preshrinking machine, including a frame 1, a feeding frame 2 provided at the feeding end of the frame 1, a steam humidifying unit 3 provided on the frame 1 and downstream of the feeding unit, a rubber blanket cloth shrinking unit 4 provided below the frame 1 and downstream of the steam humidifying unit 3, a felt drying unit 5 downstream of the rubber blanket cloth shrinking unit 4, and a plurality of discharging rollers 6 rotatably provided on the frame 1.

[0055] Specifically, a plurality of rollers with the functions of pulling and tensioning the fabric are arranged on the feeding rack 2, and a motor for driving the rollers to rotate is also arranged. The feeding rack 2 plays the role of feeding, enabling the fabric to be fed into the pre-shrinking machine for pre-shrinking treatment. The steam humidifying unit 3 can provide steam during operation, enabling the fabric to be wetted, which helps to eliminate the potential shrinkage of the fabric. The rubber blanket fabric shrinking unit 4 and the woolen blanket drying unit 5 are prior arts (such as disclosed in the publication number CN203904666U), and are respectively used for performing the pre-shrinking process and the finishing process on the fabric. The discharging roller 6 can be driven by a motor, and is used for pulling the fabric that has completed the finishing process, so that the fabric is pulled to the discharging end of the frame 1 and finally discharged for collection.

[0056] Furthermore, the pre-shrinking machine further includes a first vision detection camera 7, a second vision detection camera 8, and a central processing unit. Among them, the first vision detection camera 7 is fixedly arranged above the frame 1, and the first vision detection camera 7 is located between the feeding rack 2 and the steam humidifying unit 3, so as to take photos of the surface of the fabric that has not been pre-shrunk and finished. The second vision detection camera 8 is fixedly arranged above the discharging roller 6 and is used for taking photos of the surface of the fabric that has been pre-shrunk and finished. The central processing unit is electrically connected to the first vision detection camera 7 and the second vision detection camera 8. The central processing unit is integrated with vision analysis software, which can receive the fabric surface photos taken by the first vision detection camera 7 and the second vision detection camera 8, and analyze and process the fabric surface photos, so as to obtain the shrinkage rate of the fabric after pre-shrinking and finishing.

[0057] In practical applications, the fabric areas that can be photographed by the first vision detection camera 7 and the second vision detection camera 8 are the same, that is, the lengths and widths of the fabric shown in the photos should be the same. Since the warp density and weft density (i.e., the warp and weft density) of the fabric will change after pre-shrinking and finishing, the photos of the fabric can be taken by the first vision detection camera 7 and the second detection camera first, and then the warp and weft densities of the fabric under the same area in the two photos can be obtained through analysis by the vision analysis software. By comparing the changes in the warp density and weft density of the fabric before and after pre-shrinking treatment, not only the warp shrinkage rate of the fabric can be obtained, but also the weft shrinkage rate of the fabric can be obtained.

[0058] Of course, during the driving process, production personnel can also make marks with a ruler at the fabric feeding place, then take photos of the fabric surface with the help of two vision detection cameras, and automatically obtain the warp shrinkage rate and weft shrinkage rate of the fabric by means of the vision analysis software automatically measuring the distance between the marked points.

[0059] As Figure 1 shown, in a preferred embodiment of the present utility model, the frame 1 includes a cross beam 101 and at least two groups of support columns 102.

[0060] Among them, two crossbeams 101 are arranged in parallel, and a space for the fabric to pass through is formed between the two crossbeams 101. And two support columns 102 are arranged in each group, respectively used to support the two crossbeams 101.

[0061] Such as Figures 2 to 4 and Figure 6 As shown, in a preferred embodiment of the present invention, the pre-shrinking machine further includes a first mounting frame 9a and a second mounting frame 9b. The first mounting frame 9a and the second mounting frame 9b are respectively used to mount the first vision detection camera 7 and the second vision detection camera 8, and both the first mounting frame 9a and the second mounting frame 9b include two support frames 91 and a first mounting rod 92.

[0062] Among them, the two support frames 91 are arranged oppositely and are respectively arranged on the upper parts of the two crossbeams 101; and the first mounting rod 92 is used to mount the first vision detection camera 7 or the second vision detection camera 8, and the two ends of the first mounting rod 92 are respectively connected to the inner sides of the two support frames 91, and the first mounting rod 92 is perpendicular to the crossbeam 101 in the horizontal direction. When the pre-shrinking machine works, the fabric passes under the first mounting rod 92.

[0063] Furthermore, the first vision detection camera 7 and the second vision detection camera 8 are detachably arranged on the first mounting rod 92, and both vision detection cameras should be located above the fabric to be photographed.

[0064] Such as Figure 2 、 Figure 4 and Figure 6 As shown, in a preferred embodiment of the present invention, the first mounting frame 9a and the second mounting frame 9b both further include a second mounting rod 93 and an LED light box 10.

[0065] Among them, the second mounting rod is parallel to the first mounting rod 92, and the two ends of the second mounting rod 93 are respectively connected to the inner sides of the two support frames 91; and the LED light box 10 is detachably arranged on the second mounting rod 93. When the LED light box 10 works, the light emitted by it irradiates the fabric surface, so that the field of view below the two vision detection cameras can be clearer, and then the clarity of the fabric photos taken by the vision detection cameras is high. Correspondingly, the shrinkage rate results obtained by detection are also more accurate.

[0066] It should be noted that the present invention does not specifically limit the installation position of the LED light box 10 on the second mounting rod 93, but in any case, the light-emitting surface of the LED light box 10 should face the fabric, so as to ensure that there is light that can be reflected into the two vision detection cameras.

[0067] Specifically, the LED light box 10 may include a box body provided with a light outlet, an LED light strip disposed inside the box body, and a light guide plate disposed at the light outlet. The light guide plate may be an acrylic light guide plate, a polycarbonate light guide plate, etc., which can evenly distribute and diffuse the light source, thereby improving the brightness and light emission uniformity of the LED light box 10.

[0068] As Figure 2 and Figure 5 shown, in a preferred embodiment of the present invention, the first mounting bracket 9a further includes two traction rollers 94.

[0069] The length directions of the two traction rollers 94 are both consistent with the length direction of the first mounting rod 92, and the heights of the two traction rollers 94 are the same. Further, the traction rollers 94 are located below the first mounting rod 92 of the first mounting bracket 9a, and both ends of the traction rollers 94 are rotatably connected to the support frame 91.

[0070] After the fabric is fed into the pre-shrinking machine through the feeding rack 2, the fabric is drawn to the traction rollers 94, and the lower surface of the fabric comes into contact with the two traction rollers 94 having the same height at the same time, so that the fabric remains in a horizontally unfolded state when passing below the first vision detection camera 7. The fabric photo taken by the first vision detection camera 7 can accurately reflect the actual situation of the fabric surface. Correspondingly, the detected shrinkage rate result is also more accurate.

[0071] As Figure 1 shown, when the fabric after pre-shrinking finishing is drawn onto the discharge roller 6, the fabric can remain in a horizontally unfolded state. Therefore, when the second vision detection camera 8 is installed in Figure 1 the area shown, there is no need to provide traction rollers 94 on the second mounting bracket 9b.

[0072] As Figures 2 to 4 shown, in a preferred embodiment of the present invention, a plurality of mounting holes 921 are equidistantly spaced apart at the top of the first mounting rod 92; L-shaped mounting plates 11 can be detachably connected to the backs of the first vision detection camera 7 and the second vision detection camera 8; an assembly hole matching the mounting holes 921 is provided on the horizontal portion of the mounting plate 11. Thus, both vision detection cameras can be mounted on the first mounting rod 92 by means of fasteners such as screws and bolts.

[0073] Since a plurality of mounting holes 921 are distributed at the top of the first mounting rod 92, the positions of the two vision detection cameras on the first mounting rod 92 can both be adjusted. Preferably, the first vision detection camera 7 and the second vision detection camera 8 have the same model specifications, and both vision detection cameras are located above the central area of the fabric, thereby being able to obtain the shrinkage rate of the fabric more accurately.

[0074] As Figure 1, Figure 7 and Figure 8 As shown in Figure 7 and Figure 8 , in a preferred embodiment of the present utility model, the steam humidifying unit 3 includes at least two rollers 31 to ensure that both sides of the fabric can be wetted. The rollers 31 are rotatably arranged between two cross beams 101 (driven by a motor), and the axial direction of the rollers 31 is perpendicular to the cross beams 101. Further, the interior of the rollers 31 has a chamber for accommodating steam, and this chamber can be connected to a steam generator through a steam pipeline, so that the steam generated by the steam generator can be supplied to the interior of the rollers 31; and a plurality of steam outlet holes 311 ( Figure 7 not shown) communicating with the chamber are provided on the cylinder wall of the rollers 31, ensuring that the steam can be ejected onto the surface of the fabric.

[0075] As Figure 7 and Figure 8 shown, in a preferred embodiment of the present utility model, an inner cylinder 32 is provided inside the rollers 31; the axial direction of the inner cylinder 32 is the same as that of the rollers 31, and the outer wall of the inner cylinder 32 and the inner wall of the rollers 31 are connected by a plurality of reinforcing plates 33, and exhaust holes 321 are provided on the cylinder wall of the inner cylinder 32.

[0076] When the steam humidifying unit 3 works, the steam generated by the steam generator first enters the inner cylinder 32, and then enters the chamber through the exhaust holes 321; when connecting the reinforcing plates 33 between the outer wall of the inner cylinder 32 and the inner wall of the rollers 31, the structural strength of the rollers 31 can be improved. Correspondingly, the thickness of the cylinder wall of the rollers 31 can be made thinner, making the rollers 31 convenient for handling and installation.

[0077] As Figure 7 shown, in a preferred embodiment of the present utility model, one end of the inner cylinder 32 extends out of the rollers 31 and is connected with a rotary joint 34; the rotary joint 34 is connected with a steam delivery pipeline. In this embodiment, the part of the inner cylinder 32 located outside the rollers 31 is rotatably connected to a bearing seat arranged on the upper part of the cross beam 101 of the frame 1, and the rotary joint 34 is fixed, so that the steam delivery pipeline can be communicated with the rotating inner cylinder 32 through the rotary joint 34, ensuring that the steam can be delivered into the working rollers 31.

[0078] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural transformations made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A preshrinking machine, comprising a frame, a feeding frame arranged at a feeding end of the frame, a steam moistening unit arranged on the frame and located downstream of the feeding unit, a rubber blanket shrinking unit arranged below the frame and located downstream of the steam moistening unit, a felt drying unit located downstream of the rubber blanket shrinking unit, and a plurality of discharging rollers rotatably arranged on the frame, characterized in that: Also includes: A first visual inspection camera, wherein the first visual inspection camera is fixedly arranged above the frame, and the first visual inspection camera is located between the feed rack and the steam humidification unit, A second visual inspection camera, wherein the second visual inspection camera is fixedly arranged above the discharge roller, A central processing unit, the central processing unit is electrically connected to the first visual inspection camera and the second visual inspection camera; The first visual inspection camera and the second visual inspection camera are both used to take pictures of the fabric surface, and both feed the taken pictures back to the central processing unit.

2. The preshrinking machine according to claim 1, characterized in that: The frame comprises: A crossbeam, wherein two crossbeams are arranged in parallel. At least two groups of support columns are provided, and each group of support columns is provided with two columns, which are used to support two cross beams respectively.

3. The preshrinking machine according to claim 2, characterized in that: It also includes a first mounting frame and a second mounting frame; the first mounting frame and the second mounting frame are used to mount a first visual inspection camera and a second visual inspection camera, respectively, and the first mounting frame and the second mounting frame each include: Two support frames, the two support frames are arranged opposite to each other and are respectively arranged on the upper parts of the two cross beams, A first mounting rod, wherein both ends of the first mounting rod are respectively connected to the inner sides of the two support frames, and the first mounting rod is perpendicular to the crossbeam in the horizontal direction; The first mounting rod is used to mount the first visual inspection camera or the second visual inspection camera.

4. The preshrinking machine according to claim 3, characterized in that: The first mounting frame and the second mounting frame each further include: A second mounting rod, the second mounting rod is parallel to the first mounting rod, and both ends of the second mounting rod are respectively connected to the inner sides of the two support frames, An LED light box, wherein the LED light box is arranged on the second mounting rod; In it, the light from the LED light box shines onto the fabric.

5. The preshrinking machine according to claim 3, characterized in that: The first mounting frame further comprises: Two traction rollers, the length directions of the two traction rollers are consistent with the length direction of the first mounting rod, and the heights of the two traction rollers are the same; The traction roller is located below the first mounting rod of the first mounting frame, and both ends of the traction roller are rotatably connected to the supporting frame.

6. The preshrinking machine according to claim 3, characterized in that: The top of the first mounting rod is provided with a plurality of mounting holes at equal intervals; the backs of the first visual inspection camera and the second visual inspection camera are both detachably connected with an L-shaped mounting plate; the horizontal portion of the mounting plate is provided with assembly holes that match the mounting holes.

7. The preshrinking machine according to claim 2, characterized in that: The steam humidifying unit comprises at least two rollers; the rollers are rotatably arranged between two beams, and the axial direction of the rollers is perpendicular to the beams; the interior of the rollers is provided with a chamber for accommodating steam, and the wall of the rollers is provided with a plurality of steam outlets connected with the chambers.

8. The preshrinking machine according to claim 7, characterized in that: An inner cylinder is arranged inside the roller; the axial direction of the inner cylinder is consistent with the axial direction of the roller, and the outer wall of the inner cylinder and the inner wall of the roller are connected by a plurality of reinforcing plates, and exhaust holes are arranged on the cylinder wall of the inner cylinder.

9. The preshrinking machine according to claim 8, characterized in that: One end of the inner cylinder extends outward from the roller and is connected to a rotary joint; the rotary joint is connected to a steam delivery pipeline.

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