Tension detection mechanism

Abstract

The utility model relates to a tension detection mechanism which comprises a tension wheel, a swing rod, a heavy hammer and a pull rope sensor. A cutting loop line can be wound on the tension wheel; the first end of the swing rod is fixedly connected with the tension wheel; the second end of the swing rod is rotationally connected with the heavy hammer; the pull rope sensor is located above the swing rod, and a measuring rope of the pull rope sensor extends and is fixedly connected with the second end of the swing rod. When the cutting loop line has a line arch and pulls the tension wheel to move downwards, the second end of the swing rod can swing upwards around the first end of the swing rod and drive the heavy hammer to move upwards, and the elongation of the measuring rope is shortened. The device has the beneficial effects that when the tension of the cutting loop line is too large and a line bow occurs, the cutting loop line can pull the tension wheel to move downwards, the tension wheel drives the second end of the swing rod to swing upwards around the first end of the swing rod, and the first end of the swing rod drives the heavy hammer to move upwards, so that the elongation of the measuring rope is shortened. And when the change value of the elongation of the measuring rope is too large, the cutting process parameters are adjusted or the cutting loop line is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of wire cutting mechanisms, in particular to a tension detection mechanism. Background Art

[0002] In a wire cutting device, a cutting loop is used to cut a workpiece, and a tension wheel is used to keep the cutting wire in a tensioned state. However, when the feeding speed increases, the cutting ability of the loop decreases, the hardness of the workpiece to be cut is large, the cutting area increases, etc., the cutting loop is extruded by the workpiece to form a concave arc, and the tension value borne by the cutting loop is too large. If the workpiece is continuously cut, the service life of the cutting loop is easily shortened or even broken. Therefore, there is an urgent need for a mechanism that can detect the tension value of the cutting loop. Summary of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] In view of the above-mentioned disadvantages and deficiencies of the prior art, the utility model provides a tension detection mechanism, which can detect the tension value of the cutting loop.

[0005] (2) Technical Solutions

[0006] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0007] An embodiment of the utility model provides a tension detection mechanism, including a tension wheel, a swing rod, a weight, and a rope tension sensor;

[0008] The cutting loop can be wound around the tension wheel;

[0009] The first end of the swing rod is fixedly connected to the tension wheel, and the second end of the swing rod is rotatably connected to the weight;

[0010] The rope tension sensor is located above the swing rod, and the measuring rope of the rope tension sensor extends and is fixedly connected to the second end of the swing rod;

[0011] When the cutting loop forms a wire bow and pulls the tension wheel downwards, the second end of the swing rod can swing upwards around its first end and drive the weight to move upwards, and the elongation of the measuring rope is shortened.

[0012] According to the utility model, it further includes a support frame, a rotating shaft, and a swing arm;

[0013] The rotating shaft is horizontally oriented and penetrates through the support frame, and is rotatably connected to the support frame through a first bearing;

[0014] The first end of the rotating shaft is fixedly connected to the first end of the swing rod, the second end of the rotating shaft is fixedly connected to the first end of the swing arm, and the second end of the swing arm is fixedly connected to the tension wheel;

[0015] When there is a wire arch in the cutting loop line, the tension wheel can drive the second end of the swing arm to swing downward around the first end of the swing arm, and the first end of the swing arm can drive the second end of the swing rod to swing upward around the first end of the swing rod.

[0016] According to the present utility model, the main body of the pull rope sensor is fixed on the support frame.

[0017] According to the present utility model, it further includes a weight connecting head and a rotating rod;

[0018] The weight connecting head is fixedly connected to the weight;

[0019] The rotating rod is horizontally oriented and fixedly connected to the second end of the swing rod. The rotating rod is inserted into the weight connecting head and can rotate relative to the weight connecting head;

[0020] When the second end of the swing rod swings upward around its first end, the swing rod can drive the rotating rod to rotate relative to the weight connecting head and drive the weight to move upward.

[0021] According to the present utility model, the weight connecting head is provided with a horizontally oriented first connecting hole;

[0022] The first connecting hole can be sleeved and rotatably connected to the rotating rod through a second bearing.

[0023] According to the present utility model, the bottom of the weight connecting head is provided with a vertically oriented first threaded hole;

[0024] The top of the weight is fixedly connected with a vertically oriented screw rod, and the screw rod can be threadedly connected into the threaded hole to detachably fix the weight on the weight connecting head.

[0025] According to the present utility model, it further includes a connecting frame;

[0026] The end of the rotating rod is provided with a horizontally oriented second threaded hole;

[0027] The connecting frame is provided with a horizontally oriented second connecting hole and a vertically oriented third connecting hole;

[0028] The second connecting hole can communicate with the second threaded hole and a screw is passed through to detachably fix the connecting frame on the rotating rod;

[0029] The connecting end of the measuring rope is fixedly connected with a sleeve, and the sleeve is provided with internal threads;

[0030] The sleeve can communicate with the third connecting hole and a screw is passed through to detachably fix the sleeve on the connecting frame.

[0031] According to the present utility model, the connecting frame is an L-shaped frame body, a second connecting hole is formed in the vertical plate of the connecting frame, and a third connecting hole is formed in the horizontal plate of the connecting frame.

[0032] According to the present utility model, it further includes a PLC controller, and the PLC controller is connected to the main body of the pull rope sensor;

[0033] The tension detection mechanism further includes an alarm, and the alarm is connected to the PLC controller;

[0034] The PLC controller can be connected to the driver of the wire cutting mechanism.

[0035] (III) Beneficial effects

[0036] The beneficial effects of the present utility model are as follows: For the tension detection mechanism of the present utility model, when the cutting loop does not cut the workpiece, the elongation of the measuring rope is a fixed value. During the process of the cutting loop cutting the workpiece, when the tension of the cutting loop is too large and a wire bow appears, the cutting loop can pull the tension wheel downward, the tension wheel drives the second end of the swing rod to swing upward around the first end of the swing rod, and the first end of the swing rod drives the weight to move upward, so that the elongation of the measuring rope is shortened. When the change value of the elongation of the measuring rope is too large, the cutting process parameters are adjusted or the cutting loop is replaced. Thus, this tension detection mechanism can timely avoid the fracture of the cutting loop. Description of the drawings

[0037] Figure 1 It is the front view of the tension detection mechanism of the present utility model (the support frame is a partial view);

[0038] Figure 2 is Figure 1 the rear view of;

[0039] Figure 3 is Figure 2 the partial schematic view of;

[0040] Figure 4 is Figure 2 the three-dimensional schematic view of;

[0041] Figure 5 is Figure 4 the partial schematic view of.

[0042]

Description of the reference numerals

[0043] 1: Tension wheel;

[0044] 2: Swing rod;

[0045] 3: Weight; 31: Weight connecting head; 311: First connecting hole;

[0046] 4: Pull rope sensor; 41: Measuring rope; 42: Sleeve;

[0047] 5: Support frame;

[0048] 6: Rotating shaft;

[0049] 7: Rotating rod;

[0050] 8: Connecting frame; 81: Second connecting hole;

[0051] 91: First bearing; 92: Second bearing;

[0052] A: Cutting loop. Detailed implementation manner

[0053] For better explaining the present utility model for easy understanding, the present utility model will be described in detail below in conjunction with the accompanying drawings through specific implementation manners. Among them, the orientation nouns such as "upper" and "lower" mentioned in this article are based on Figure 3 the orientation of

[0054] See Figures 1-5 , the tension detection mechanism proposed in the embodiment of the present utility model includes a tension wheel 1, a swing rod 2, a weight 3 and a pull rope sensor 4.

[0055] The cutting loop A can be wound around the tension wheel 1. The first end of the swing rod 2 is fixedly connected to the tension wheel 1, and the second end of the swing rod 2 is rotatably connected to the weight 3. The pull rope sensor 4 is located above the swing rod 2, and the measuring rope 41 of the pull rope sensor 4 extends and is fixedly connected to the second end of the swing rod 2. When a line arch appears in the cutting loop A and pulls the tension wheel 1 downward, the second end of the swing rod 2 can swing upward around its first end and drive the weight 3 to move upward, and the elongation of the measuring rope 41 shortens.

[0056] Among them, the line arch is shown as the cutting loop A being concave inward. The weight 3 is used to counterweight the tension wheel 1 so that the tension wheel 1 can tension the cutting loop A.

[0057] When the cutting loop A does not cut the workpiece, the elongation of the measuring rope 41 is a fixed value. During the process of the cutting loop A cutting the workpiece, when the tension of the cutting loop A is too large and a line arch appears, the cutting loop A can pull the tension wheel 1 downward, the tension wheel 1 drives the second end of the swing rod 2 to swing upward around the first end of the swing rod 2, and the first end of the swing rod 2 drives the weight 3 to move upward, so that the elongation of the measuring rope 41 shortens. When the change value of the elongation of the measuring rope 41 is too large, adjust the cutting process parameters or replace the cutting loop. Thus, the present tension detection mechanism can timely prevent the cutting loop A from breaking.

[0058] It should be noted that the tension value borne by the cutting loop A can be calculated by measuring the change value of the elongation of the measuring rope 41. When the second end of the swing rod 2 swings around the first end of the swing rod 2, the swing trajectory of the second end of the swing rod 2 is an arc, that is, the measuring rope 41 elongates or shortens along an arc trajectory. Since the swing amplitude of the second end of the swing rod 2 around the first end of the swing rod 2 is small, the change value of the elongation of the measuring rope 41 is also correspondingly small, and the deviation of calculating the tension value borne by the cutting loop A through the change value of the elongation of the measuring rope 41 is also small, which will not affect its monitoring of the tension value of the cutting loop A. When the change value of the elongation of the measuring rope 41 is greater than the set value, it can reflect that the tension value borne by the cutting loop A is overloaded.

[0059] Furthermore, the tension detection mechanism further includes a PLC controller, which is communicatively connected to the main body of the pull rope sensor 4. The PLC controller is used to receive the value of the elongation of the measuring rope 41 sent by the pull rope sensor 4 to monitor the change value of the elongation in real time.

[0060] Optionally, the tension detection mechanism further includes an alarm, which is communicatively connected to the PLC controller. When the PLC controller monitors that the change value of the elongation of the measuring rope 41 is greater than the set safety value, the PLC controller controls the alarm to send an alarm message.

[0061] Optionally, the PLC controller is communicatively connected to the driver of the wire cutting mechanism. When the PLC controller monitors that the change value of the elongation of the measuring rope 41 is greater than the set safety value, the PLC controller controls the driver to stop, in order to better protect the cutting mechanism.

[0062] Furthermore, the tension detection mechanism further includes a support frame 5, a rotating shaft 6 and a swing arm.

[0063] The rotating shaft 6 is horizontally oriented and penetrates through the support frame 5, and is rotatably connected to the support frame 5 through a first bearing 91. The first end of the rotating shaft 6 is fixedly connected to the first end of the swing rod 2, the second end of the rotating shaft 6 is fixedly connected to the first end of the swing arm, and the second end of the swing arm is fixedly connected to the tension wheel 1.

[0064] Wherein, the swing rod 2 and the swing arm are fixedly connected through the rotating shaft 6 to form a lever. One end of the lever is fixedly connected to the tension wheel 1, and the other end is fixedly connected to the weight 3. The lever can rotate around the through hole of the support frame 5 through which the rotating shaft 6 penetrates, so that the weight 3 and the tension wheel 1 can swing relatively.

[0065] When a wire bow appears in the cutting loop A, the cutting loop A can pull the tension wheel 1 downward, the tension wheel 1 can drive the second end of the swing arm to swing downward around the first end of the swing arm, and the first end of the swing arm can drive the second end of the swing rod 2 to swing upward around the first end of the swing rod 2.

[0066] Optionally, the rotating shaft 6 passes through the second end of the swing rod 2, and the rotating shaft 6 passes through the end of the swing rod 2 and is threadedly connected with a nut to fix the rotating shaft 6 on the swing rod 2. The second end of the swing arm is fixedly connected to the tension wheel 1 by bolts.

[0067] Specifically, the tension wheel 1, the swing arm, and the cutting loop A are located on the first side of the support frame 5, and the rotating shaft 6, the swing rod 2, the weight 3, and the rope tension sensor 4 are located on the second side of the support frame 5.

[0068] Specifically, the main body of the rope tension sensor 4 is fixed on the support frame 5. When a wire bow appears in the cutting loop A and pulls the tension wheel 1 downward, the measuring rope 41 of the rope tension sensor 4 can shorten relative to the main body of the rope tension sensor 4, that is, the elongation of the measuring rope 41 shortens.

[0069] Furthermore, the tension detection mechanism further includes a weight connector 31 and a rotating rod 7.

[0070] The weight connector 31 is fixedly connected to the weight 3. The rotating rod 7 is horizontally oriented and fixedly connected to the second end of the swing rod 2. The rotating rod 7 is inserted into the weight connector 31 and can rotate relative to the weight connector 31.

[0071] When the second end of the swing rod 2 swings upward around its first end, the swing rod 2 can drive the rotating rod 7 to rotate relative to the weight connector 31 and drive the weight 3 to move upward.

[0072] Specifically, the weight connector 31 is provided with a horizontally oriented first connection hole 311.

[0073] The first connection hole 311 can be sleeved and rotatably connected to the rotating rod 7 through a second bearing 92.

[0074] The bottom of the weight connector 31 is provided with a vertically oriented first threaded hole. The top of the weight 3 is fixedly connected with a vertically oriented screw rod, and the screw rod can be threadedly connected into the threaded hole to detachably fix the weight 3 on the weight connector 31 for easy disassembly, loading, and maintenance.

[0075] Furthermore, the tension detection mechanism further includes a connecting frame 8.

[0076] The end of the rotating rod 7 is provided with a horizontally oriented second threaded hole. The connecting frame 8 is provided with a horizontally oriented second connection hole 81 and a vertically oriented third connection hole. The second connection hole 81 can communicate with the second threaded hole and a screw is passed through to detachably fix the connecting frame 8 on the rotating rod 7 for easy disassembly, loading, and maintenance.

[0077] The connecting end of the measuring rope 41 is fixedly connected to a sleeve 42, and the sleeve 42 is provided with internal threads. The sleeve 42 can communicate with the third connection hole and a screw is passed through to detachably fix the sleeve 42 on the connecting frame 8 for easy disassembly, loading, and maintenance.

[0078] Thus, when the second end of the swing rod 2 swings upward around its first end, the swing rod 2 drives the rotating rod 7 to swing synchronously, and the rotating rod 7 drives the sleeve 42 to move upward through the connecting frame 8, so as to shorten the elongation of the measuring rope 41.

[0079] Specifically, the connecting frame 8 is an L-shaped frame body. A second connecting hole 81 is formed in the vertical plate of the connecting frame 8, and a third connecting hole is formed in the horizontal plate of the connecting frame 8.

[0080] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0081] In the present utility model, unless otherwise clearly defined and limited, when the first feature is "above" or "below" the second feature, it may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, when the first feature is "above", "above" and "on" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "below", "below" and "under" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0082] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0083] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A tension detection mechanism, characterized in that It includes a tension pulley (1), a swing rod (2), a weight (3), and a cable tension sensor (4); The cutting loop line (A) can be wound around the tension pulley (1); The first end of the swing rod (2) is fixedly connected to the tension pulley (1), and the second end of the swing rod (2) is rotatably connected to the weight (3); The cable tension sensor (4) is located above the swing rod (2), and the measuring cable (41) of the cable tension sensor (4) extends and is fixedly connected to the second end of the swing rod (2); When a line bow appears in the cutting loop line (A) and pulls the tension pulley (1) downward, the second end of the swing rod (2) can swing upward around its first end and drive the weight (3) to move upward, and the elongation of the measuring cable (41) shortens.

2. The tension detection mechanism according to claim 1, wherein, It further includes a support frame (5), a rotating shaft (6), and a swing arm; The rotating shaft (6) is horizontally oriented and penetrates the support frame (5), and is rotatably connected to the support frame (5) through a first bearing (91); The first end of the rotating shaft (6) is fixedly connected to the first end of the swing rod (2), the second end of the rotating shaft (6) is fixedly connected to the first end of the swing arm, and the second end of the swing arm is fixedly connected to the tension pulley (1); When a line bow appears in the cutting loop line (A), the tension pulley (1) can drive the second end of the swing arm to swing downward around the first end of the swing arm, and the first end of the swing arm can drive the second end of the swing rod (2) to swing upward around the first end of the swing rod (2).

3. The tension detection mechanism according to claim 2, characterized in that, The main body of the cable tension sensor (4) is fixed on the support frame (5).

4. The tension detection mechanism according to claim 3, wherein, It further includes a weight connector (31) and a rotating rod (7); The weight connector (31) is fixedly connected to the weight (3); The rotating rod (7) is horizontally oriented and fixedly connected to the second end of the swing rod (2), and the rotating rod (7) is inserted into the weight connector (31) and can rotate relative to the weight connector (31); When the second end of the swing rod (2) swings upward around its first end, the swing rod (2) can drive the rotating rod (7) to rotate relative to the weight connector (31) and drive the weight (3) to move upward.

5. The tension detection mechanism according to claim 4, characterized in that, The weight connector (31) is provided with a horizontally oriented first connection hole (311); The first connection hole (311) can be sleeved and rotatably connected to the rotating rod (7) through a second bearing (92).

6. The tension detection mechanism according to claim 4, wherein, The bottom of the weight connector (31) is provided with a vertically oriented first threaded hole; The top of the weight (3) is fixedly connected with a vertically oriented screw rod, and the screw rod can be threadedly connected into the threaded hole to detachably fix the weight (3) on the weight connector (31).

7. The tension detection mechanism according to claim 4, wherein, It further includes a connecting frame (8); The end of the rotating rod (7) is provided with a horizontally oriented second threaded hole; The connecting frame (8) is provided with a horizontally oriented second connection hole (81) and a vertically oriented third connection hole; The second connection hole (81) can communicate with the second threaded hole and a screw is passed through to detachably fix the connecting frame (8) on the rotating rod (7); The connecting end of the measuring rope (41) is fixedly connected to the connecting sleeve (42), and the sleeve (42) is provided with internal threads; The sleeve (42) can communicate with the third connecting hole and a screw can be passed through it to detachably fix the sleeve (42) on the connecting frame (8).

8. The tension detection mechanism according to claim 7, wherein, The connecting frame (8) is an L-shaped frame body. The second connecting hole (81) is opened on the vertical plate of the connecting frame (8), and the third connecting hole is opened on the horizontal plate of the connecting frame (8).

9. The tension detection mechanism according to claim 1, wherein, It further includes a PLC controller, and the PLC controller is connected to the main body of the pulling rope sensor (4); The tension detection mechanism further includes an alarm, and the alarm is connected to the PLC controller; The PLC controller can be connected to the driver of the wire cutting mechanism.

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