Bedding printing apparatus

Abstract

The utility model belongs to the field of textile processing, specifically provide a bedding printing processing device, including base, the upper surface of base is equipped with two side frames, the front end fixed mounting of side frame has the guide, is installed printing mechanism on the guide, the base is provided with cloth width correction mechanism in the rear sequence direction of printing mechanism, cloth width correction mechanism includes left correction roll and right correction roll, and the interval is left between two correction roll inner ends, and the inner pressure sensor is equipped in the lower bottom surface close to the inner end, and the outer pressure sensor is provided in the lower bottom surface middle part, each is equipped with hydraulic cylinder above two correction rolls, and the piston rod front end of hydraulic cylinder is respectively connected with left correction roll and right correction roll upper part hinge, pressure sensor and hydraulic cylinder are connected with control module electricity. Adjust the angle of correction roll through the hydraulic cylinder, can carry out the different degree of expansion or narrow to the two sides of the fabric, or to the position correction of fabric deviation, thereby avoided the problem such as fabric deviation, wrinkle.

Description

Technical Field

[0001] This utility model belongs to the field of textile processing, and in particular relates to a bedding printing processing device. Background Technology

[0002] Bedding printing refers to the process of printing patterns onto bedding fabrics using dyes. Currently, bedding printing typically uses a belt-type digital direct-to-garment printer, which continuously feeds the fabric through rollers, allowing it to pass through the printhead, which then prints the preset pattern onto the fabric.

[0003] Circular roller conveyors are prone to fabric misalignment (fabric deviating from the center line) and wrinkles, leading to pattern misalignment, blurring, or ghosting. In severe cases, this can even cause fabric breakage and machine downtime. Existing technologies typically use curved rollers to flatten flat materials. By adjusting the bending angle of the curved roller, the contact position between the fabric and the roller is changed, achieving lateral stretching of the fabric, smoothing out wrinkles, and also allowing for lateral expansion or narrowing of the fabric.

[0004] Using curved rollers to spread flat fabric has the following problems: Since curved rollers must be symmetrical, they cannot effectively correct fabric deviation caused by different tensions on the left and right sides of the fabric feed; for elastic fabrics, if there are different stretching degrees on the left and right sides, it is necessary to expand or narrow the width of the fabric laterally to different degrees, which cannot be achieved by symmetrical curved rollers. Utility Model Content

[0005] To solve the above problems and achieve separate correction, expansion, or narrowing of the fabric on both sides, this utility model provides a bedding printing processing device, including a base. Two side frames are mounted on the upper surface of the base. A guide rail is fixedly mounted at the front end of each side frame, and a printing mechanism is mounted on the guide rail. A fabric width correction mechanism is provided on the base following the printing mechanism. The fabric width correction mechanism includes a left correction roller and a right correction roller, with a gap between their inner ends. The outer ends of the left and right correction rollers are connected to the middle of the side frames via a hinge shaft. An internal pressure sensor is installed near the inner end of the lower bottom surface of the positive roller and the right correction roller, and an external pressure sensor is installed in the middle of the lower bottom surface of the left correction roller and the right correction roller. A hydraulic cylinder is installed above the left correction roller and the right correction roller, and the cylinder bodies of the two hydraulic cylinders are respectively mounted on the upper inner side of the two side frames through hinges. A hinge seat is installed on the upper middle part of the left correction roller and the right correction roller, and the front end of the piston rod of the two hydraulic cylinders is respectively connected to the upper middle hinge of the left correction roller and the right correction roller. The internal pressure sensor, the external pressure sensor and the hydraulic cylinder are all electrically connected to the control module.

[0006] Preferably, a front conveyor roller and a rear conveyor roller are respectively arranged at the front and rear positions of the fabric width correction mechanism, and the highest point of the front conveyor roller and the rear conveyor roller is not lower than the highest point of the left correction roller and the right correction roller when they are in the horizontal position.

[0007] Preferably, two deviation monitoring devices are provided above the front conveyor roller in the subsequent direction. The two deviation monitoring devices are fixedly connected to the side frames on both sides by support rods. The deviation monitoring devices are electrically connected to the control module.

[0008] Preferably, the bias monitoring device is an industrial camera.

[0009] Preferably, a limit plate is provided on the side frame above the hydraulic cylinder body.

[0010] The beneficial effects of this utility model are: by adjusting the angle of the left and right correction rollers with two hydraulic cylinders, it is possible to adjust them separately according to the degree of offset and tension difference of the left and right sides of the fabric, to expand or narrow the fabric to different degrees, or to correct the position of the fabric deviation, thereby avoiding problems such as fabric deviation and wrinkles. Attached Figure Description

[0011] Figure 1 This is a perspective view of the bedding printing processing device of this utility model; Figure 2 This is a three-dimensional enlarged view of the bedding printing processing device of this utility model; Figure 3 This is a rear view of the bedding printing processing device of this utility model; Figure 4 This is a partial enlarged cross-sectional view of the rear view of the bedding printing processing device of this utility model; Figure 5 This is a schematic diagram illustrating the principle of two correction rollers tilting downwards to push the fabric. Figure 6 This is a schematic diagram illustrating the principle of two correction rollers tilting upwards to push the fabric. Figure 7 This is a schematic diagram illustrating the principle of the front and rear conveyor rollers supporting the fabric. Among them, 1 is the base, 2 is the side frame, 3 is the guide rail, 4 is the printing mechanism, 5 is the left correction roller, 6 is the right correction roller, 7 is the internal pressure sensor, 8 is the external pressure sensor, 9 is the hydraulic cylinder, 10 is the front conveyor roller, 11 is the rear conveyor roller, 12 is the bias monitoring device, and 13 is the limit plate. Detailed Implementation

[0012] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. In this document, "preceding direction" and "subsequent direction" refer to the running direction of the bedding fabric, where subsequent direction refers to the direction in which the fabric runs, and preceding direction refers to the direction in which the fabric runs.

[0013] like Figure 1-4As shown, the bedding printing processing device disclosed in this utility model includes a base 1, with two parallel side frames 2 installed on both sides above the base 1. A guide rail 3 is horizontally mounted at the front end of the side frames 2, and the guide rail 3 can be an existing linear motor guide rail. A printing mechanism 4 is provided on the guide rail 3, and the printing mechanism 4 can move left and right on the guide rail 3 to print on the fabric below it.

[0014] A fabric width correction mechanism is installed on the base 1 in the subsequent direction of the printing mechanism 4. This mechanism includes a left correction roller 5 and a right correction roller 6. The outer ends of the left and right correction rollers 5 and 6 are respectively connected to the inner sidewall of the middle section of the side frame 2 via longitudinally rotating hinges. A gap is left between the inner ends of the left and right correction rollers 5 and 6. The outer ends refer to the ends of the correction rollers pointing towards the sides of the printing processing device, i.e., the hinge connection ends; the inner ends refer to the ends of the correction rollers pointing towards the middle of the printing processing device, i.e., the freely movable ends. The left and right correction rollers 5 and 6 are made of polished metal rollers, which cause almost no wear to the fabric and do not accumulate static electricity.

[0015] A hydraulic cylinder 9 is located above each of the left and right correction rollers 5 and 6. The cylinder bodies of the hydraulic cylinders 9 are mounted on the upper inner surfaces of the two side frames 2 via longitudinally rotating hinges. Hinges are fixedly welded to the upper middle surfaces of the left and right correction rollers 5 and 6. The piston rods of the two hydraulic cylinders 9 are connected to the upper middle hinges of the left and right correction rollers 5 and 6, respectively.

[0016] An internal pressure sensor 7 is installed on the lower side of both the left correction roller 5 and the right correction roller 6 near their inner ends, and an external pressure sensor 8 is installed on the lower surface of the middle part of both the left correction roller 5 and the right correction roller 6. The two hydraulic cylinders 9, the internal pressure sensor 7, and the external pressure sensor 8 are all electrically connected to the control module.

[0017] When the taut fabric passes through the fabric width correction mechanism, the angles of the left correction roller 5 and the right correction roller 6 can be adjusted by two hydraulic cylinders 9. For example... Figure 5 As shown, when the correction roller tilts downwards (its free-moving end is lower than the hinge connection end), the lower side of the correction roller applies an outward pushing force to the fabric, causing the fabric width to expand outwards. At this time, the position of the inner pressure sensor 7 presses against the fabric. The inner pressure sensor 7 can monitor the pressure value in real time to prevent excessive pressure from damaging the fabric. Figure 6As shown, when the correction roller tilts upwards (its free-moving end is higher than the hinged end), the lower side of the correction roller applies an inward thrust to the fabric, causing the fabric width to contract inwards. At this time, the external pressure sensor 8 presses against the fabric, monitoring the pressure in real time. Furthermore, unlike the symmetrical structure of the arc-shaped roller, the two hydraulic cylinders 9 of this invention independently control the left correction roller 5 or the right correction roller 6. The tilt angles of the two correction rollers can be different, thus allowing for separate adjustments based on the degree of offset and tension difference between the left and right sides of the fabric. For example, if the fabric deviates to the left during operation, the hydraulic cylinder 9 drives the right correction roller 6 to tilt downwards while the left correction roller 5 tilts upwards, causing both sides of the fabric to be pushed downwards and to the right, thus achieving centering.

[0018] Since the fabric conveying relies on external guide rollers of the bedding printing processing device (usually drive guide rollers are located at the front and rear of the printing machine), and because the external guide rollers are far from the fabric width correction mechanism, insufficient downward pressure may occur when the fabric passes through the fabric width correction mechanism. To further improve the adjustment effect of the correction rollers on the fabric, a front conveyor roller 10 and a rear conveyor roller 11 are respectively installed in front of and behind the left correction roller 5 and the right correction roller 6. Both the front conveyor roller 10 and the rear conveyor roller 11 are mounted between the two side frames 2 and connected to the bearings on the side frames 2 via rotating shafts. The highest point of the front conveyor roller 10 and the rear conveyor roller 11 is not lower than the highest point of the two correction rollers when they are in a horizontal state, and the highest point of the rear conveyor roller is higher than the lower end face of the printing mechanism. The "highest point" refers to the point on the upper horizontal cross-section of each roller.

[0019] like Figure 7 As shown, after the fabric is fed, it will sequentially pass along a V-shaped path, passing above the front conveyor roller 10, below the fabric width correction mechanism, and above the rear conveyor roller 11, before passing below the printing mechanism 4 and being output. The front conveyor roller 10 and the rear conveyor roller 11 provide upward support to the fabric. Compared to the external guide rollers, the front conveyor roller 10 and the rear conveyor roller 11 are closer to the fabric width correction mechanism, thereby allowing the two correction rollers to apply greater thrust to the fabric and achieve a better downward correction effect.

[0020] To further monitor the fabric offset in real time, two offset monitoring devices 12 are installed above the front conveyor roller 10 in the subsequent direction. Each offset monitoring device 12 is fixedly mounted on a support rod, and the ends of the two support rods are fixedly connected to the inner sides of the two side frames 2, respectively. The offset monitoring devices 12 are electrically connected to the control module.

[0021] The bias monitoring device 12 can be an existing product such as an industrial camera, an infrared edge sensor, or an ultrasonic edge sensor. The bias monitoring device 12 monitors downwards to see if there is any deviation in the position of the fabric edge, and drives the left correction roller 5 or the right correction roller 6 to adjust the tilt state according to the edge deviation, thereby adjusting the position of the fabric edge.

[0022] The control module can be a common industrial PLC. The functions involved in this utility model, such as hydraulic cylinder control and bias monitoring signal collection, can be implemented by those skilled in the art through simple PLC programming.

[0023] like Figure 1-2 As shown, a limiting plate 13 is installed on the side frame 2 above the cylinder body of the hydraulic cylinder 9. The limiting plate 13 is a roof-shaped metal cover structure. When the hydraulic cylinder 9 is driven to rotate, the cylinder body of the hydraulic cylinder 9 will also rotate. Therefore, the limiting plate 13 can prevent the hydraulic cylinder 9 from exceeding the rotation angle limit and causing a malfunction. At the same time, the limiting plate 13 can also provide a dustproof function to protect the hinge between the hydraulic cylinder 9 and the side frame 2.

[0024] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model.

Claims

1. A bedding printing processing device, comprising a base, two side frames mounted on the upper surface of the base, guide rails fixedly mounted on the front ends of the side frames, and a printing mechanism mounted on the guide rails, characterized in that: A fabric width correction mechanism is installed on the base in the subsequent direction of the printing mechanism. The fabric width correction mechanism includes a left correction roller and a right correction roller, with a gap between the inner ends of the left and right correction rollers. The outer ends of the left and right correction rollers are connected to the middle of the side frame via hinge shafts. An inner pressure sensor is installed near the inner end of the lower bottom surface of the left and right correction rollers, and an outer pressure sensor is installed in the middle of the lower bottom surface of the left and right correction rollers. A hydraulic cylinder is installed above the left and right correction rollers, and the cylinder bodies of the two hydraulic cylinders are respectively mounted on the upper inner side of the two side frames via hinges. A hinge seat is installed on the upper middle surface of the left and right correction rollers, and the front ends of the piston rods of the two hydraulic cylinders are respectively connected to the upper middle hinge of the left and right correction rollers. The inner pressure sensor, the outer pressure sensor, and the hydraulic cylinders are all electrically connected to the control module.

2. The bedding printing processing apparatus according to claim 1, characterized in that: The fabric width correction mechanism is equipped with a front conveyor roller and a rear conveyor roller at the front and rear positions, respectively. The highest point of the front conveyor roller and the rear conveyor roller is not lower than the highest point of the left correction roller and the right correction roller when they are in the horizontal position.

3. The bedding printing processing apparatus according to claim 2, characterized in that: Two deviation monitoring devices are installed above the front conveyor roller in the following direction. The two deviation monitoring devices are fixedly connected to the side frames on both sides by support rods. The deviation monitoring devices are electrically connected to the control module.

4. The bedding printing processing apparatus according to claim 3, characterized in that: The aforementioned bias monitoring device is an industrial camera.

5. The bedding printing processing apparatus according to claim 1, 2, 3, or 4, characterized in that: A limit plate is installed on the side frame above the hydraulic cylinder body.

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