A length measuring device for cutting textile fabrics

Abstract

The present invention is applicable to the field of measurement technology and provides a length measuring device for cutting textile fabrics, including a winding member and a reversing guide member, the free end of the wound fabric on the winding member passes around the reversing guide member, and the device also includes: a measuring component, the measuring component is used to measure the linear displacement of the fabric between the winding member and the reversing guide member; a fastening and releasing component is arranged in a cavity opened on the winding member, and is used to fasten the end of the cloth to the winding member and to release the end of the cloth, the fastening and releasing component includes a base body arranged on the winding member and two bite members symmetrically arranged relative to the base body, each bite member is slidably mounted on the base body, and a through slot is opened on the base body, and the end of the fabric is arranged between the two bite members after passing through the through slot. The beneficial effects of the content of the present invention are: it can accurately measure the length of the remaining amount of the wound fabric, can effectively avoid waste, and has strong practicality.

Description

Technical Field

[0001] The invention belongs to the field of measurement technology, and in particular relates to a length measuring device for cutting textile fabrics. Background Art

[0002] Knitted fabrics are divided into two categories according to the weaving method: weft knitted fabrics and warp knitted fabrics. Weft knitted fabrics are often made of low-elastic polyester yarn or special-shaped polyester yarn, nylon yarn, cotton yarn, wool yarn, etc., and are woven on various weft knitting machines using plain needle structure, variable plain needle structure, rib plain needle structure, double rib plain needle structure, jacquard structure, terry structure, etc.

[0003] After the textile fabric is woven, it needs to be cut in order to facilitate the processing of the textile fabric. Existing cutting methods include mechanical cutting, laser cutting, etc. However, these cutting methods all have one feature, that is, after the fabric wound on the take-up roller is released, the free end of the fabric is stretched and then aligned for cutting. However, these methods have at least the following disadvantages in implementation: 1. The end of the fabric needs to be fixed on the take-up roller, and this part often cannot be used; 2. The cutting length or the fabric margin is measured manually, the degree of automation is low, and the error caused by human intervention is large. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a length measuring device for cutting textile fabrics, aiming to solve the problems existing in the prior art identified in the background art.

[0005] The embodiment of the present invention is implemented as follows: a length measuring device for cutting textile fabrics, comprising a winding member and a reversing guide member, wherein the free end of the wound fabric on the winding member passes around the reversing guide member, and the device further comprises:

[0006] A measuring component, the measuring component is used to measure the linear displacement of the fabric between the winding member and the reversing guide member;

[0007] A fastening and releasing assembly is provided in a cavity formed on the winding member, and is used to fasten the end of the cloth to the winding member and to release the end of the cloth. The fastening and releasing assembly includes a base provided on the winding member and two engaging members arranged symmetrically relative to the base, each engaging member being slidably mounted on the base, and a through slot formed on the base, through which the end of the cloth passes and is arranged between the two engaging members;

[0008] Positioning guide assembly;

[0009] A driving assembly, used for utilizing the restraining force of the fabric wound on the winding member to keep the two engaging members engaged with the ends of the fabric;

[0010] When the fabric is released from the winding member, the displacement guide assembly cooperates with the fastening and releasing assembly so that the measured portion between the free end and the end of the fabric always remains perpendicular to the measuring assembly.

[0011] Preferably, the displacement guide assembly includes:

[0012] a telescopic guide member, arranged between the reversing guide member and the winding member;

[0013] The telescopic rod is used to drive the telescopic guide to move linearly. The telescopic guide is rotatably mounted on the protruding end of the telescopic rod and its bottom is kept tangent to the fabric.

[0014] Preferably, the measuring component comprises:

[0015] A displacement identification sensor is installed at the extended end of the telescopic rod, with the measuring end of the displacement identification sensor perpendicular to the fabric;

[0016] The central control box, the displacement identification sensor is electrically connected to the central control box.

[0017] Preferably, the engaging members all include movable engaging seats, the movable engaging seats are arranged relatively to each other, and the opposite surfaces of the movable engaging seats are provided with engaging teeth that cooperate with each other.

[0018] Preferably, the fastening and releasing assembly further comprises magnetic parts respectively arranged on opposite surfaces of the movable engaging seat, and the magnetic parts are engaged with each other.

[0019] Preferably, the drive assembly comprises:

[0020] A folding member, comprising a rod body, the rod body being rotatably mounted in the cavity via a reset shaft, and a first driving chute and a second driving chute being respectively provided at both ends of the rod body;

[0021] An interference rod is slidably connected to the cavity and has an outer end in contact with the fabric, and an inner end is fixed with a first driving pin that is in sliding engagement with the first driving slot;

[0022] The insert rod is slidably connected to the cavity and one end of the insert rod is plugged into a slot provided on the movable engaging seat, and the other end of the insert rod is fixed with a second driving pin which is slidably matched with the second driving slot.

[0023] Preferably, it also includes an infrared sensor arranged at the position of the winding member, which is electrically connected to the central control box and is used to identify the fabric wound on the winding member. When the number of turns of the fabric wound on the winding member is less than one turn, the telescopic rod controls the movement of the telescopic guide member so that the tangent line of the bottom of the telescopic guide member passes through the axis of the winding member and the bottom of the telescopic guide member is in contact with the surface of the fabric.

[0024] The embodiment of the present invention provides a length measuring device for cutting textile fabrics, which has the following beneficial effects:

[0025] 1) By cooperating with the displacement guide component and the fastening and releasing component, the measured part between the free end and the end of the fabric is always kept perpendicular to the measuring component, thus maintaining the accurate measurement of the linear displacement of the fabric by the measuring component;

[0026] 2) The end of the fabric that cannot be measured and utilized in traditional cutting can also be measured. The fabric measurement including the fabric end allowance can be completed accurately, and the cutting amount can be maximized to avoid waste and improve efficiency.

[0027] 3) By setting up the fastening and releasing components and cooperating with the driving components, the binding force of the fabric wrapped around the winding member is used to make the two engaging members keep the ends of the fabric engaged, abandoning the defects of the traditional technology of fixing the ends of the fabric by gluing or winding, and realizing the fixing and releasing of the fabric during automatic winding and rewinding, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a main structural diagram provided for an embodiment of the present invention.

[0029] Figure 2 The embodiment of the present invention provides Figure 1 A partial enlarged view of point A in the middle.

[0030] Figure 3 A structural diagram of another implementation state provided by an embodiment of the present invention.

[0031] Figure 4 A structural diagram of a cutting device provided in an embodiment of the present invention.

[0032] Figure 5 A schematic diagram of the three-dimensional structure of a folding member provided in an embodiment of the present invention.

[0033] Figure 6 A schematic diagram of the three-dimensional structure of the fastening and releasing assembly provided in an embodiment of the present invention.

[0034] In the accompanying drawings: 1-winding member; 2-telescopic guide member; 3-telescopic rod; 4-displacement identification sensor; 5-central control box; 6-reversing guide member; 7-seat body; 71-through slot; 72-identification through hole; 8-movable engaging seat; 81-engaging tooth; 82-slot; 9-interference rod; 10-folding member; 101-rod body; 1011-first driving slide groove; 1012-second driving slide groove; 11-insertion rod; 12-magnetic member; 13-coil spring; 14-infrared sensor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0037] like Figures 1-6 FIG. 1 is a structural diagram of a length measuring device for cutting textile fabrics provided by an embodiment of the present invention, comprising a winding member 1 and a reversing guide 6. The free end of the wound fabric on the winding member 1 passes around the reversing guide 6. Specifically, the reversing guide 6 is two guide rollers arranged opposite to each other. The device further comprises:

[0038] A measuring component, which is used to measure the linear displacement of the fabric between the winding member 1 and the reversing guide member 6;

[0039] The fastening and releasing assembly is disposed in a cavity formed on the winding member 1 and is used to fasten the end of the cloth to the winding member 1 and to release the end of the cloth. The fastening and releasing assembly includes a base 7 disposed on the winding member 1 and two engaging members symmetrically arranged relative to the base 7. Each engaging member is slidably mounted on the base 7. The base 7 is provided with a through slot 71. The end of the fabric passes through the through slot 71 and is disposed between the two engaging members.

[0040] Positioning guide assembly;

[0041] A driving assembly, used to utilize the restraining force of the fabric wound on the winding member 1 to keep the two engaging members engaged with the ends of the fabric;

[0042] When the fabric is released from the winding member 1, the displacement guide assembly cooperates with the fastening and releasing assembly so that the measured portion between the free end and the end of the fabric always remains perpendicular to the measuring assembly.

[0043] Specifically, the measuring assembly measures the linear displacement of the fabric between the winding member 1 and the telescopic guide member 2. For a complete piece of fabric, while maintaining tension, the length of the free end of the fabric used (e.g., cut) will be equal to the length released from the winding member 1. Therefore, when the fabric is released from the winding member 1, the displacement guide assembly cooperates with the fastening and releasing assembly to ensure that the measured portion between the free end and the end of the fabric remains perpendicular to the measuring assembly, thereby maintaining accurate measurement of the linear displacement of the fabric by the measuring assembly. Furthermore, the measurement of fabric ends that cannot be measured or utilized during traditional cutting can be performed, allowing accurate measurement of the fabric, including the remaining fabric end, to maximize cutting volume, avoid waste, and improve efficiency. Furthermore, the fastening and releasing assembly, in conjunction with the drive assembly, utilizes the binding force of the fabric wrapped around the winding member 1 to maintain the two engaging members engaged with the fabric end. This eliminates the drawbacks of traditional techniques that rely on gluing or thread winding to secure the fabric end, achieving both fabric securement and release during automatic winding and rewinding.

[0044] like Figure 1 、 Figure 3 and Figure 4 As shown, as a preferred embodiment of the present invention, the displacement guide assembly includes:

[0045] The telescopic guide member 2 is provided between the reversing guide member 6 and the winding member 1;

[0046] The telescopic rod 3 is used to drive the telescopic guide 2 to move linearly. The telescopic rod 3 can be fixedly mounted on the frame. The telescopic guide 2 is rotatably mounted on the protruding end of the telescopic rod 3 and its bottom is kept tangent to the fabric.

[0047] In actual application of this embodiment, the telescopic rod 3 includes but is not limited to an electric telescopic rod and a hydraulic telescopic rod. Here, the hydraulic telescopic rod is preferably used because of its smooth telescopic movement.

[0048] like Figure 1-Figure 5 As shown, as another preferred embodiment of the present invention, the measuring component includes:

[0049] The displacement identification sensor 4 is installed at the extended end of the telescopic rod 3, and the measuring end of the displacement identification sensor 4 is perpendicular to the fabric;

[0050] The central control box 5 , the displacement recognition sensor 4 is electrically connected to the central control box 5 .

[0051] In actual application of this embodiment, the displacement identification sensor 4 is preferably a laser displacement sensor. The setting of the laser sensor ensures that not only the displacement of the moving fabric can be measured and its length can be obtained, but also the thickness of the fabric can be measured. Specifically, in actual operation, the displacement identification sensor 4 acts on the width surface of the fabric, and of course it can also act on the thickness surface of the fabric.

[0052] like Figure 1 、 Figure 2 and Figure 6 As shown, as another preferred embodiment of the present invention, the engaging members all include movable engaging seats 8, which are arranged relatively to each other, and the opposite surfaces of the movable engaging seats 8 are provided with engaging teeth 81 that cooperate with each other.

[0053] Specifically, the engaging teeth 81 can be triangular, arc-shaped, sawtooth-shaped, etc. When the engaging teeth 81 between the two movable engaging seats 8 remain engaged, the fabric can be fastened. In order to avoid damage to the fabric, the engaging teeth 81 are preferably arc-shaped.

[0054] like Figure 2 As shown, as another preferred embodiment of the present invention, the seat body 7 is connected to the cavity by a coil spring 13, and the seat body 7 is provided with a through slot 71 for the end of the cloth to pass through. The seat body 7 is also provided with an identification hole 72, and the identification hole 72 is connected to the through slot 71. The identification hole 72 is used to cooperate with the displacement identification sensor 4 to measure the displacement of the end of the fabric.

[0055] When this embodiment is used in actual applications, the detailed winding process of the fabric will be introduced in detail in the next embodiment. It can be understood that the setting of the coil spring 13 can save usage space to a certain extent and make it easier for the seat body 7 to return to the cavity after being pulled out.

[0056] like Figure 2 As shown, the fastening and releasing component can also be a combination of a contact switch and a mechanical clamp, which uses the restraint of the fabric to trigger the contact switch to open, and then uses the double screw and nut to complete the clamping of the fabric end. This embodiment provides a linkage structure that does not require the use of external force. The fastening and releasing component also includes magnetic suction parts 12 respectively arranged on the opposite sides of the movable engaging seat 8, and the magnetic suction parts 12 are attracted to each other.

[0057] In one aspect of this embodiment, the drive assembly includes:

[0058] The folding member 10 includes a rod 101, which is rotatably mounted in the cavity via a reset shaft. A first drive slot 1011 and a second drive slot 1012 are respectively provided at both ends of the rod 101. The reset shaft includes, but is not limited to, an elastic hinge or a torsion spring.

[0059] The interference rod 9 is slidably connected to the cavity and has its outer end in contact with the fabric, and its inner end is fixed with a first driving pin that is slidably engaged with the first driving slot 1011;

[0060] The insertion rod 11 is slidably connected to the cavity and one end of the insertion rod is plugged into the slot 82 provided on the movable engagement seat 8, and the other end of the insertion rod is fixed with a second driving pin that is slidably engaged with the second driving slot 1012.

[0061] In actual application of this embodiment, when the fabric is wound on the winding member 1, the seat body 7 is pulled out from the cavity, and the end of the fabric is first inserted through the through slot 71 and inserted between the two bite members. Due to the damping sliding connection between the bite member and the seat body 7, and the presence of the magnetic member 12, the seat body 7 is inserted into the cavity as a whole. At this time, the bite member can maintain a certain bite force on the end of the fabric, and then the fabric is wound from a certain direction. At this time, the fabric will make the interference rod 9 exposed on the surface of the winding member 1 during the process of fitting with the surface of the winding member 1, so that the interference rod 9 slides inward, thereby driving the part where the rod body 101 is connected to the insertion rod 11 to rotate toward the seat body 7. The movement causes the insertion rod 11 to slide toward the seat body 7, and the inner end of the insertion rod 11 forms an insert fit with the movable bite seat 8 to limit the movement of the movable bite seat 8. When the fabric is wound to the other side, the insertion rod 11 on the other side forms a restriction on the movable bite seat 8. As the fabric is subsequently wound, the interference restriction on the interference rod 9 will always be maintained. Therefore, the binding force of the fabric wrapped around the winding member 1 is used to make the two bite members keep the bite on the end of the cloth. This structure can form a fastening of the fabric end without the action of external force. The design is novel and is not only suitable for cutting fabrics, but also suitable for fastening the ends of all wound members and winding members.

[0062] When the fabric is released, in the cutting stage or other states, the free end of the fabric is subjected to the pulling force, and the fabric on the winding member 1 is released to the point where the excess is insufficient, and the fabric loses its resistance to the resistance rod 9. At this time, under the action of the reset shaft, the insertion rod 11 and the resistance rod 9 are reset, and the insertion rod 11 loses its resistance to the movable bite seat 8. However, at this time, due to the damping sliding installation of the movable bite seat 8 and the existence of the magnetic suction member 12, the fastening and releasing assembly still maintains a certain fastening effect on the end of the fabric. Only when the winding member 1 is in Figure 3In the state shown, the free end of the fabric will begin or have caused the end of part of the fabric to begin to slide out from the fastening and releasing assembly. At this time, the seat body 7 as a whole is pulled partially out by the fabric, and the fabric is also moving outward during the outward sliding of the seat body 7. At this time, the displacement identification sensor 4 can just measure the end of the moving fabric through the identification hole 72 until the end of the fabric is completely separated from the seat body 7. The measurement of the remaining amount of the fabric end is completed. Since the displacement guide component has started to work at this time (its principle will be introduced in detail later), it can accurately complete the measurement of the fabric including the remaining amount of the fabric end, and maximize the cutting amount (without considering the deformation of the fabric, the movement of the left side of the same fabric is equal to the movement on the right side), avoiding waste and improving corporate efficiency.

[0063] Specifically, in order to ensure that the end of the fabric is in a horizontal state when it is discharged to reduce measurement errors, and to increase the friction between the fabric and the seat 7, several groups of rollers made of elastic material are arranged relatively in the groove 71, and the fabric is clamped between the relatively arranged rollers.

[0064] like Figure 3 As shown, as another preferred embodiment of the present invention, it also includes an infrared sensor 14 arranged at the position of the winding member 1, and the infrared sensor 14 is electrically connected to the central control box 5 and is used to identify the fabric wound on the winding member 1. When the number of turns of the fabric wound on the winding member 1 is less than one turn, the telescopic rod 3 controls the movement of the telescopic guide 2 so that the bottom tangent of the telescopic guide 2 passes through the axis of the winding member 1 and the bottom of the telescopic guide 2 is in contact with the surface of the fabric.

[0065] It can be understood that when the fabric wound on the winding member 1 is less than one turn at the beginning, due to the different materials of the fabric and the winding member 1, the reflection effect of the infrared light is also different. Therefore, it can be identified that the fabric is less than one turn. The central control box 5 will respond when it receives the feedback signal, and control the extension of the telescopic rod 3 to make the state of the common tangent of the bottom of the telescopic guide 2 and the top of the winding member 1 become the tangent of the bottom of the telescopic guide 2 horizontally passing through the axis of the winding member 1. In this process, since the fabric is always tangent to the bottom of the telescopic guide 2, the measuring end of the displacement identification sensor 4 will always remain perpendicular to the fabric during the common movement with the telescopic guide 2, so that the accurate measurement of the length of the fabric can always be guaranteed, and the movement of the telescopic guide 2 will not affect the measurement.

[0066] The above embodiment of the present invention provides a length measuring device for cutting textile fabrics, which measures the linear displacement of the fabric between the winding member 1 and the telescopic guide member 2 through a measuring component. For the same complete piece of fabric, when it is kept taut, the length of the free end of the fabric used (such as cutting) will be equal to the length released from the winding member 1. Therefore, when the fabric is released from the winding member 1, the displacement guide component cooperates with the fastening and releasing component so that the measured part between the free end and the end of the fabric is always kept perpendicular to the measuring component, thereby being able to maintain the measurement component's accuracy in measuring the linear displacement of the fabric. Accurate measurement. At the same time, it can also measure the parts of the fabric ends that cannot be measured and utilized in traditional cutting. It can accurately complete the measurement of the fabric including the fabric end allowance, maximize the cutting amount, avoid waste, and improve efficiency. At the same time, through the setting of the fastening and releasing components, in conjunction with the driving components, it is used to utilize the binding force of the fabric wrapped on the winding member 1 to make the two bite members maintain the bite on the end of the cloth, abandoning the defects of the traditional technology of fixing the end of the fabric by gluing or wire winding, and realizing the fixation and release of the fabric during automatic winding and rewinding.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A length measuring device for cutting textile fabrics, comprising a winding member and a reversing guide member, wherein the free end of the wound fabric on the winding member passes around the reversing guide member, characterized in that: The device further comprises: A measuring assembly, comprising a displacement identification sensor and a central control box, wherein the displacement identification sensor is mounted on the extended end of the telescopic rod and is electrically connected to the central control box; A fastening and releasing assembly is provided in a cavity formed on the winding member, and is used to fasten the end of the cloth to the winding member and to release the end of the cloth. The fastening and releasing assembly includes a base provided on the winding member and two engaging members arranged symmetrically relative to the base, each engaging member being slidably mounted on the base, and a through slot formed on the base, through which the end of the cloth passes and is arranged between the two engaging members; The displacement guide assembly includes a telescopic guide and a telescopic rod. The telescopic guide is rotatably mounted on the protruding end of the telescopic rod, and its bottom is tangent to the fabric. A driving assembly comprising a folding member, an interference rod and an insertion rod; The folding member includes a rod body, which is rotatably mounted in the cavity via a reset shaft, and a first driving slot and a second driving slot are respectively provided at both ends of the rod body; The interference rod is slidably connected to the cavity and its outer end is in contact with the fabric, and its inner end is fixed with a first driving pin that is slidably engaged with the first driving slot; The insertion rod is slidably connected to the cavity and one end of the insertion rod is plugged into a slot provided on the engaging member, and the other end of the insertion rod is fixed with a second driving pin which is slidably engaged with a second driving slot; An infrared sensor is provided at the winding member to identify the number of fabric turns wound on the winding member and is electrically connected to the central control box; When the fabric is released from the winding member, when the infrared sensor recognizes that the number of fabric turns is less than one turn, the central control box controls the extension of the telescopic rod so that the bottom tangent of the telescopic guide passes through the axis of the winding member and fits with the surface of the fabric, so that the measured part of the fabric always remains perpendicular to the measuring end of the displacement recognition sensor.

2. The length measuring device for cutting textile fabrics according to claim 1, characterized in that: The engaging members all include movable engaging seats, which are arranged relatively to each other, and the opposite surfaces of the movable engaging seats are provided with engaging teeth that cooperate with each other.

3. The length measuring device for cutting textile fabrics according to claim 1, characterized in that: The seat body and the cavity are connected by a coil spring. The seat body is provided with a through slot for the end of the cloth to pass through. The seat body is also provided with an identification hole, which is connected to the through slot. The identification hole is used to cooperate with the displacement identification sensor to measure the displacement of the end of the fabric.

4. The length measuring device for cutting textile fabrics according to claim 2, characterized in that: The fastening and releasing assembly further comprises magnetic parts respectively arranged on opposite surfaces of the movable engaging seat, and the magnetic parts are engaged with each other.

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