Unwinding mechanism of knitting machine

Abstract

The unwinding mechanism is provided with a wire coil adjusting assembly and a tension sensing assembly, the wire coil adjusting assembly comprises a first driving device, a second driving device and two mounting plates, the two mounting plates are hinged to a supporting frame, one end of each mounting plate is provided with a wire coil, and the other end of each mounting plate is in transmission connection with the first driving device. The wire coil is in transmission connection with the second driving device, the tension sensing assembly comprises a wire guide wheel and a pressure sensor arranged on the wire guide wheel, and the pressure sensor can feed back the pressure value borne by the wire guide wheel. The wire coil is movably erected on the supporting frame, and the pressure sensor is arranged on the wire guide wheel, so that the numerical value of the pressure borne by the current wire guide wheel can be intuitively known, the relative position of the wire coil and the wire guide wheel can be conveniently adjusted according to the numerical value, and the pressure applied to the wire guide wheel by a wire rod after unwinding can be accurately adjusted; the purpose of accurately adjusting the tension force of the wire rod is achieved, the control process is not affected by human factors, and the adjusting process is efficient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of braiding machines, in particular to an unwinding mechanism of a braiding machine. Background Art

[0002] In the weaving production of wires, the tension of each original wire directly affects the density and flexibility of the finished wire after weaving, so a structural member for adjusting the tension is generally set on the unwinding mechanism. However, in actual applications, the adjustment of the tension mostly relies on the operator's feel or intuitive feeling, and then adjusts it in combination with the finished wire detection data. The adjustment effect is lagging and inefficient, and the adjustment effect is greatly affected by human factors. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a unwinding mechanism for a braiding machine, which can intuitively understand the numerical value of the pressure currently borne by the wire wheel, so as to adjust the relative position of the wire reel and the wire wheel accordingly, so as to accurately adjust the pressure exerted by the wire on the wire wheel after unwinding, thereby achieving the purpose of accurately adjusting the wire tensioning force. The control process is not affected by human factors, and the adjustment process is efficient and fast.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] The unwinding mechanism of the braiding machine is arranged on a support frame, and a wire drum is arranged on the support frame; it includes a wire drum adjustment component and a tension force sensing component arranged on the support frame, wherein:

[0006] The wire drum adjustment assembly includes a first driving device, a second driving device and two parallel mounting plates, one end of the two mounting plates is provided with a supporting shaft extending toward each other and used to mount the wire drum, the middle part of each mounting plate is hinged to the supporting frame, and the other end part is transmission-connected to the first driving device through a first transmission device, the first driving device can drive the two mounting plates to rotate relative to the supporting frame to adjust the relative position of the wire drum and the supporting frame; the supporting shaft is transmission-connected to the second driving device through a second transmission device, and can rotate under the drive of the second driving device to drive the wire drum to rotate synchronously;

[0007] The tensioning force sensing component includes a wire wheel mounted on the support frame and located next to the wire drum, and a pressure sensor is arranged at the axis of the wire wheel. The pressure sensor is connected to the control device and / or the first drive device and / or the second drive device by electrical signals.

[0008] As a further elaboration of the above technical solution:

[0009] In the above technical solution, the first transmission device includes a connecting rod and a swing rod. The connecting rod is installed on the support frame, one end of which is in transmission connection with the first driving device, and the other end is hinged to the swing rod. The other end of the swing rod is hinged to the two mounting plates.

[0010] In the above technical solution, the first driving device is a circular motion driving device, the connecting rod is a lead screw, a nut is arranged on the lead screw, and the nut is hinged to the swing rod.

[0011] In the above technical solution, the first driving device is a linear motion driving device, and the connecting rod is slidably installed on the support frame.

[0012] In the above technical solution, the second transmission device includes more than one gear shaft. Two adjacent gear shafts are meshed and connected. One gear shaft is in transmission connection with the second driving device through a synchronous belt, and one gear shaft is in transmission connection with one support shaft; the second driving device is a circular motion driving device and is electrically connected to the pressure sensor.

[0013] In the above technical solution, the tension sensing assembly further includes a guide rod installed on the support frame and arranged in parallel with the wire guide pulley. A support seat and an elastic member are sleeved on the guide rod. The support seat is sleeved on the periphery of the pressure sensor, and the elastic member is arranged on the side of the support seat facing the wire processing mechanism.

[0014] In the above technical solution, the pressure sensor is of a shaft structure, one end of which is in rolling connection with the wire guide pulley, and the other end passes through the support seat and extends to the outside thereof.

[0015] In the above technical solution, protective covers are respectively arranged on the periphery of the support seat and the pressure sensor, and the periphery of the guide rod and the elastic member.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: By movably mounting the wire reel on the support frame and arranging a pressure sensor on the wire guide pulley, the pressure value borne by the current wire guide pulley can be intuitively feedback, which is convenient to adjust the relative position of the wire reel and the wire guide pulley accordingly, so as to accurately adjust the pressure applied by the wire on the wire guide pulley after unwinding, achieve the purpose of accurately adjusting the wire tension, the control process is not affected by human factors, and the adjustment process is efficient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of this embodiment;

[0018] Figure 2 is a schematic structural diagram of the wire reel adjustment assembly in this embodiment (the wire reel is not shown);

[0019] Figure 3 It is a schematic structural diagram of the tension induction component in this embodiment;

[0020] Figure 4 is Figure 3 The schematic structural diagram after removing the protective cover.

[0021] In the figure: 10, support frame; 20, wire reel; 30, wire reel adjustment component; 31, first driving device; 32, second driving device; 33, mounting plate; 34, support shaft; 35, first transmission device; 36, second transmission device; 40, tension induction component; 41, wire guide pulley; 42, pressure sensor; 43, guide rod; 44, support seat; 45, elastic component; 46, protective cover; 1, connecting rod; 2, swing rod; 3, connecting plate; 4, gear shaft; 5, synchronous belt. Specific embodiments

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a number of" and "a plurality of" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0024] As Figure 1 shown, the unwinding mechanism of the knitting machine is provided on the support frame 10, and a bobbin 20 is mounted on the support frame 10; it includes a bobbin adjusting assembly 30 and a tension sensing assembly 40 provided on the support frame 10.

[0025] As Figure 1-2As shown, the wire drum adjustment assembly 30 includes a first drive device 31, a second drive device 32 and two parallel mounting plates 33. One end of the two mounting plates 33 is provided with support shafts 34 extending toward each other and used to set up the wire drum 20. The middle parts are hinged to the support frame 10, and the other ends are transmission connected to the first drive device 31 through the first transmission device 35. The first drive device 31 can drive the two mounting plates 33 to rotate relative to the support frame 10 to adjust the relative position of the wire drum 20 and the support frame 10; a support shaft 34 is transmission connected to the second drive device 32 through the second transmission device 36, and can rotate under the drive thereof to drive the wire drum 20 to rotate synchronously.

[0026] In this embodiment, if Figure 2 As shown, the first transmission device 35 includes a connecting rod 1 and a rocker arm 2. The connecting rod 1 is installed on the support frame 10, one end of which is transmission-connected to the first driving device 31, and the other end is hinged to the rocker arm 2. The other end of the rocker arm 2 is hinged to a connecting plate 3, and the two ends of the connecting plate 3 are respectively detachably fixed to the mounting plate 33; the second transmission device 36 includes more than one gear shaft 4, and two adjacent gear shafts are meshed and connected. One gear shaft 4 is transmission-connected to the second driving device 32 through a synchronous belt 5, and one gear shaft 4 is transmission-connected to a support shaft 34; the second driving device 32 is a circular motion driving device and is electrically connected to the pressure sensor 42.

[0027] In some embodiments, the first drive device 31 is a circular motion drive device, the connecting rod 1 is a lead screw, a nut is provided on the lead screw, and the nut is hinged to the swing rod 2. In other embodiments, the first drive device 31 is a linear motion drive device, and the connecting rod 1 is slidably mounted on the support frame 10.

[0028] like Figure 3-4 As shown, the tensioning force sensing assembly 40 includes a wire wheel 41 mounted on the support frame 10 and located next to the wire drum 20, and a pressure sensor 42 is arranged at the axis of the wire wheel 41. The pressure sensor 42 is electrically connected to the control device and / or the first drive device 31 and / or the second drive device 32.

[0029] In this embodiment, if Figure 4 As shown, the tension force sensing component 40 also includes a guide rod 43 mounted on the support frame 10 and arranged parallel to the wire wheel 41, a support seat 44 and an elastic component 45 are sleeved on the guide rod 43, the support seat 44 is sleeved on the periphery of the pressure sensor 42, the elastic component 45 is arranged on the side of the support seat 11 facing the wire processing mechanism, the pressure sensor 42 is an axial structure, one end of which is rollingly connected to the wire wheel 41, and the other end passes through the support seat 44 and extends to its outside; the periphery of the support seat 44 and the pressure sensor 42, the periphery of the guide rod 43 and the elastic component 45 are all covered with a protective cover 46.

[0030] During operation, the second driving device 32 drives the synchronous belt 5 to drive the gear shaft 4 to drive the wire reel 20 to rotate synchronously for unwinding the wound wire, and the wire is sent to the processing mechanism after being aligned by the wire guide wheel 41. During the process, the first driving device 31 can drive the connecting rod 1 to drive the swing rod 2 to pull the connecting rod 3 to make a relative swing with the support frame 10. The connecting rod 3 drives the two mounting plates 33 to rotate relative to the support frame 10, so that the distance between the wire reel 20 thereon and the wire guide wheel 41 changes, thereby changing the tension of the wire after unwinding. At the same time, the tensioned wire presses against the wire guide wheel 41 mounted on the support frame 10. The pressure sensor 42 receives the pressure value borne by the wire guide wheel 41 and feeds it back to the control device and / or the first driving device 31 and / or the second driving device 32. The second driving device 32 stops driving the wire reel 20 to rotate in a timely manner according to the feedback signal and the set program. The control device and / or the first driving device 31 drive the turntable 20 to move away from or close to the wire guide wheel 41 according to the feedback signal to tension or relax the wire. When the pressure sensor 42 senses the set pressure value, the feedback signal commands the second driving device 32 to continue driving the wire reel 20 to rotate and commands the first driving device 31 to stop driving, so as to maintain the current position of the wire reel 20 and the tension of the wire after current unwinding. In this embodiment, the first driving device 31 is a handwheel, and a display device is provided on the control device to display the pressure value. The operator can intuitively understand the current tension according to it and appropriately operate the handwheel to adjust the pressure value to the set value.

[0031] In the present utility model, by movably mounting the wire reel 20 on the support frame and providing a pressure sensor on the wire guide wheel 41, the magnitude of the pressure value borne by the current wire guide wheel 41 can be intuitively understood, which is convenient for adjusting the relative position between the wire reel 20 and the wire guide wheel 41 accordingly, so as to accurately adjust the magnitude of the pressure exerted by the wire on the wire guide wheel 41 after unwinding, achieve the purpose of accurately adjusting the wire tension, the control process is not affected by human factors, and the adjustment process is efficient and fast.

[0032] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. The unwinding mechanism of a knitting machine is arranged on a support frame, and a thread reel is mounted on the support frame; characterized in that, It includes a wire drum adjustment component and a tensioning force sensing component arranged on the support frame, wherein: The wire drum adjustment assembly includes a first driving device, a second driving device and two parallel mounting plates, one end of the two mounting plates is provided with a supporting shaft extending toward each other and used to mount the wire drum, the middle part of each mounting plate is hinged to the supporting frame, and the other end of each mounting plate is transmission-connected to the first driving device through a first transmission device, the first driving device can drive the two mounting plates to rotate relative to the supporting frame to adjust the relative position of the wire drum and the supporting frame; one of the supporting shafts is transmission-connected to the second driving device through a second transmission device, and can rotate under the drive of the second driving device to drive the wire drum to rotate synchronously; The tensioning force sensing component includes a wire wheel mounted on the support frame and located next to the wire drum, and a pressure sensor is arranged at the axis of the wire wheel. The pressure sensor is connected to the control device and / or the first drive device and / or the second drive device by electrical signals.

2. The unwinding mechanism of the knitting machine according to claim 1, characterized in that, The first transmission device includes a connecting rod and a rocker arm. The connecting rod is installed on the support frame, one end of which is transmission-connected to the first driving device, and the other end is hinged to the rocker arm. The other end of the rocker arm is hinged to the two mounting plates.

3. The unwinding mechanism of the knitting machine according to claim 2, characterized in that, The first driving device is a circular motion driving device, the connecting rod is a lead screw, a nut is arranged on the lead screw, and the nut is hinged to the swing rod.

4. The unwinding mechanism of the knitting machine according to claim 2, characterized in that, The first driving device is a linear motion driving device, and the connecting rod is slidably mounted on the supporting frame.

5. The unwinding mechanism of the knitting machine according to claim 1, characterized in that, The second transmission device includes more than one gear shaft, and the adjacent gear shafts are meshed and connected in pairs. One gear shaft is transmission-connected to the second driving device through a synchronous belt, and one gear shaft is transmission-connected to the support shaft. The second driving device is a circular motion driving device and is electrically connected to the pressure sensor signal.

6. The unwinding mechanism of the knitting machine according to claim 1, characterized in that, The tension force sensing component also includes a guide rod mounted on the support frame and arranged parallel to the wire wheel, the guide rod is sleeved with a support seat and an elastic component, the support seat is sleeved on the periphery of the pressure sensor, and the elastic component is arranged on the side of the support seat facing the wire processing mechanism.

7. The unwinding mechanism of the knitting machine according to claim 6, characterized in that The pressure sensor is an axial structure, one end of which is rollingly connected to the wire wheel, and the other end passes through the support seat and extends to the outside thereof.

8. The unwinding mechanism of the knitting machine according to claim 7, characterized in that The peripheries of the support seat and the pressure sensor, and the peripheries of the guide rod and the elastic component are all covered with protective covers.

Images