Ribbon tensioning device and tension feedback method of ribbon tensioning device

Abstract

The invention relates to a cable tie tensioning device and a tension feedback method of the cable tie tensioning device, the cable tie tensioning device comprises a tensioning mechanism, a first support, a second support and a tension sensor, the tensioning mechanism is used for receiving and stretching the tail of a cable tie bundled on a fixed bundled piece, and the tension sensor is used for sensing the tension of the cable tie. The first support is connected to the second support in a sliding mode, the second support is fixedly arranged relative to a bundled piece, the tensioning mechanism is installed on the first support, and the two ends of the tension sensor are connected to the first support and the second support respectively. According to the invention, the numerical value of the pulling force applied to the ribbon by the tensioning mechanism can be accurately and intuitively obtained, the tensioning degree of the ribbon can be accurately judged, whether the step of automatically binding the ribbon by the ribbon tensioning device is qualified or not can be easily known, and the working efficiency is improved. And the degree of tightness of automatic binding of the binding belt by the binding belt tensioning device can be more accurately controlled.

Description

Technical Field

[0001] The invention relates to automatic bundling equipment, in particular to a cable tie tensioning device and a tension feedback method of the cable tie tensioning device. Background Art

[0002] The present invention cites the applicant's Chinese patents CN220483660U and CN220640344U as reference.

[0003] Prior art CN220483660U discloses a cable tie binding device, which can be used in the wire harness automatic binding equipment provided by prior art CN220640344U to perform automatic cable tie binding operations, including a tensioning part, which is constructed as a pair of clamping wheels in CN220483660U. After the cable tie is tied to a fixed bundled object, the tensioning part can clamp and stretch the tail of the cable tie. As the tail of the cable tie is continuously stretched, the cable tie becomes tighter and tighter. It can be found that the tension applied by the tensioning part to the cable tie ultimately determines the degree to which the cable tie is tightened, and thus determines the yield rate of the automatic cable tie binding operation. Therefore, it is very necessary to provide a means for determining the tension applied by the tensioning part to the cable tie. In the prior art, the tension of the tensioning part can be adjusted by adjusting the output torque of the servo motor (the servo motor is connected to the tensioning part through transmission to control the rotation of the tensioning part). Similarly, the tensioning degree of the tensioning part can be indirectly judged by the state parameters of the servo motor. However, this method of monitoring the tensioning degree of the tensioning part has the following disadvantages: since there is a transmission process between the servo motor and the tensioning part (such as adding a reduction gear train, the transmission process is longer and the impact is greater), and there is also the influence of friction between the tensioning part and the cable tie, this causes the torque parameter fed back by the servo motor to be unstable. The torque parameter can only roughly reflect the tensioning degree of the tensioning part, but cannot be accurately equated with the actual tension applied to the cable tie by the tensioning part. Therefore, the method of detecting the tension of the tensioning part by using the output torque of the servo motor in the prior art has low accuracy and reliability, and the detection data is also unstable, and misjudgment may occur. Summary of the invention

[0004] In view of the above problems, the present invention proposes a more optimized cable tie tensioning device and a tension feedback method of the cable tie tensioning device, which can accurately reflect the actual tension applied to the cable tie by the tensioning part.

[0005] The present invention is implemented by the following technical solutions:

[0006] The present invention proposes a cable tie tensioning device, comprising a tensioning mechanism, which is used to receive and stretch the tail of a cable tie that has been tied to a fixed tied piece, and also comprises a first support, a second support and a tension sensor, wherein the second support is fixedly arranged relative to the tied piece, the first support is slidably connected to the second support, and the tensioning mechanism is installed on the first support; at least in the travel direction in which the first support slides along the second support, the tensioning mechanism and the first support are connected in a force-transmitting manner; the tensioning mechanism is configured as follows: the tension applied by the tensioning mechanism to the cable tie has at least a component force in the travel direction in which the first support slides along the second support; the two ends of the tension sensor are respectively connected to the first support and the second support to measure the reverse tension of the cable tie on the tensioning mechanism and the first support when the tensioning mechanism stretches the cable tie.

[0007] Preferably, the tensioning mechanism is hinged on the first support, and the rotation axis of the tensioning mechanism is fixed relative to the first support in the travel direction of the first support sliding along the second support.

[0008] Preferably, the tensioning mechanism is a pair of clamping wheels hinged on the first support, or the tensioning mechanism is a mechanical gripper capable of grasping and pulling the cable tie, and the mechanical gripper has a swing arm hinged on the first support.

[0009] Among them, preferably, the second support includes a limit seat, the limit seat and the first support are arranged opposite to each other, and the limit seat is arranged on one side of the sliding stroke direction of the first support, and the two ends of the tension sensor are respectively fixedly connected to the first support and the limit seat.

[0010] Preferably, the first support is configured to always have a tendency to move toward the limiting seat.

[0011] Preferably, the cable tie tensioning device further comprises an adjusting mechanism, which separates the limit seat from the first support seat and is used to adjust an initial distance between the first support seat and the limit seat when the tensioning mechanism is not activated.

[0012] Preferably, the cable tie tensioning device further comprises a cutting knife for cutting off the tail of the cable tie, and the cutting knife is configured to trigger a cutting action according to a tension value measured by the tension sensor.

[0013] Preferably, the distance between the cutting knife and the bundled object is adjustable.

[0014] Among them, preferably, the cutting knife is arranged on the first support, and the cable tie tensioning device also includes a third support and a cutting knife position adjustment mechanism. The third support is fixedly arranged, and the second support is slidably connected to the third support. The cutting knife position adjustment mechanism is installed on the second support and the third support, and is used to control the sliding of the second support relative to the third support, thereby adjusting the position of the cutting knife. The cutting knife position adjustment mechanism has a self-locking function for the sliding control of the second support.

[0015] The present invention also provides a tension feedback method for a cable tie tensioning device, comprising: providing a tensioning mechanism, the tensioning mechanism being used to receive and stretch the tail of a cable tie that has been tied to a fixed tied piece, defining the direction in which the tensioning mechanism stretches the cable tie as the tension direction, arranging the tensioning mechanism in a movable manner in the tension direction, measuring the reverse tension of the cable tie on the tensioning mechanism when the tensioning mechanism stretches the cable tie, and then judging whether the cable tie is tightened.

[0016] Wherein, preferably, the tension feedback method further comprises: after judging that the cable tie has been tightened by measuring the reverse tension value, cutting off the tail of the cable tie.

[0017] Among them, preferably, in the process of movably setting the tensioning mechanism in the direction of tension, a first support and a second support that are slidably connected are provided, the tensioning mechanism is installed on the first support, and the tensioning mechanism and the first support are connected so as to transmit force in the direction in which the first support slides along the second support, and the reverse tension has at least a component force in the direction in which the first support slides along the second support.

[0018] Preferably, a tension sensor is arranged between the first support and the second support, and when the tensioning mechanism is started, the tension generated on the tension sensor by the relative sliding of the first support and the second support is measured.

[0019] The present invention has the following beneficial effects: the present invention can accurately and intuitively obtain the value of the tension applied by the tensioning mechanism to the cable tie, and accurately judge the tensioning degree of the cable tie according to the tension value measured by the tension sensor, so that it can be easily known whether the step of automatically bundling the cable tie by the cable tie tensioning device is qualified, thereby improving the production yield. The tension value measured by the tension sensor can also be used to more easily adjust the tension of the tensioning mechanism, and more accurately control the tightness of the cable tie automatically tied by the cable tie tensioning device. Moreover, the method of reading the tension value of the tensioning mechanism of the present invention is very reliable and stable, and there is basically no misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the cable tie tensioning device in Example 1 (angle 1);

[0021] Figure 2 is a schematic diagram showing the tensioning mechanism and the reduction gear train of the cable tie tensioning device in Example 1 in a separated form;

[0022] Figure 3 is an exploded schematic diagram of the first support, the second support and the tension sensor in Example 1;

[0023] Figure 4 is a cross-sectional view of the adjustment structure in Example 1;

[0024] Figure 5 is a three-dimensional schematic diagram of the cable tie tensioning device in Example 1 (angle 2);

[0025] Figure 6 It is a schematic diagram of the decomposition of the second support and the third support in Example 1. DETAILED DESCRIPTION

[0026] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0028] Embodiment 1:

[0029] See also Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, a cable tie tensioning device is provided, comprising a first support 1, a first motor 4 and a tensioning mechanism 5, the first support 1 being a mounting seat, the first motor 4 and the tensioning mechanism 5 being mounted on the first support 1, the tensioning mechanism 5 being used to receive and stretch the tail of a cable tie that has been tied to a fixed tied object, for example, the tied object can be a wire harness, the tied object is supported and supported and remains fixed during the tying process (for the relevant content of the cable tie being tied to a fixed tied object, please refer to CN220640344U for further information), in this embodiment, the tensioning mechanism 5 is two clamping wheels rotating in opposite directions, the first motor 4 is transmission-connected to the tensioning mechanism 5, the rotation of the tensioning mechanism 5 is controlled by the first motor 4, when the tensioning mechanism 5 rotates, the tail of the cable tie extending between the two clamping wheels can be tightened, thereby realizing the automatic tightening of the cable tie. A reduction gear train 6 can be transmission-connected between the first motor 4 and the tensioning mechanism 5, and the reduction gear train 6 can reduce the speed and increase the torque.

[0030] See also Figure 1 and Figure 3 The first support 1 is slidably connected to the second support 2, the second support 2 is fixed relative to the bundled object, and at least in the direction of the first support 1 sliding along the second support 2 (the direction of the first support 1 sliding along the second support 2 includes two opposite directions, Figure 3The tensioning mechanism 5 and the first support 1 are connected in a force-transmitting manner (represented as Y1 and Y2 directions). "Connected in a force-transmitting manner" means that the two connected parts can transmit force to each other, including but not limited to direct or indirect abutment. In this embodiment, the first support 1 serves as a rotating support for the tensioning mechanism 5, the tensioning mechanism 5 is hinged on the first support 1, and the rotation axis of the tensioning mechanism 5 is fixed relative to the first support 1 in the Y1 and Y2 directions. Then, the tensioning mechanism 5 and the first support 1 abut against each other in the Y1 and Y2 directions, and the force applied to the tensioning mechanism 5 in the Y1 and Y2 directions can be transmitted to the first support 1.

[0031] In this embodiment, the tension applied by the tensioning mechanism 5 to the cable tie is in the Y2 direction. A tension sensor 7 is provided between the first support 1 and the second support 2. The tension sensor 7 is provided along the Y1 direction, and the two ends of the tension sensor 7 are connected to the first support 1 and the second support 2, respectively. Then, when the tensioning mechanism 5 is activated, the tail of the cable tie tied to a fixed tied member is stretched in the Y2 direction by the tensioning mechanism 5. At the same time, the tensioning mechanism 5 itself is also subjected to the reaction force in the Y1 direction given by the cable tie. This reaction force is transmitted to the first support 1, so that the first support 1 slides relative to the second support 2 along the Y1 direction (or at least makes the first support 1 have a tendency to slide relative to the second support 2 along the Y1 direction). The first support 1 slides relative to the second support 2 along the Y1 direction, thereby stretching the tension sensor 7, and the tension sensor 7 measures the tension value. The tension value measured by the tension sensor 7 can be fed back to the control system of the whole machine and displayed on the electronic screen, which can be achieved by existing electrical technology.

[0032] Through the above arrangement, the cable tie tensioning device in this embodiment can obtain the value of the tension applied by the tensioning mechanism 5 to the cable tie very accurately and intuitively, and accurately judge the tension of the cable tie according to the tension value measured by the tension sensor 7, so that it is easy to know whether the step of automatically bundling the cable tie by the cable tie tensioning device is qualified, thereby improving the production yield. Of course, the tension value measured by the tension sensor 7 can also be used to more easily adjust the tension of the tensioning mechanism 5, and more accurately control the tightness of the cable tie automatically tied by the cable tie tensioning device. Moreover, the method of reading the tension value of the tensioning mechanism 5 in this embodiment is very reliable and stable, and there is basically no misjudgment.

[0033] In this embodiment, the tension applied by the tensioning mechanism 5 to the cable tie is in the Y2 direction. In other embodiments, it is sufficient as long as the tension applied by the tensioning mechanism 5 to the cable tie has a component force in the Y2 direction. However, according to the arrangement of this embodiment, the tensioning force data of the tensioning mechanism 5 can be obtained more accurately and intuitively.

[0034] The tensioning mechanism 5 can be replaced by other mechanisms in other embodiments. For example, the tensioning mechanism 5 can also be replaced by a mechanical gripper structure capable of grasping and pulling the cable tie, and the mechanical gripper has a swing arm hinged on the first support 1, so that the mechanical gripper and the first support 1 form a force-transmitting connection. However, the tensioning mechanism 5 with two clamping wheels in this embodiment can be more conducive to guiding and receiving the cable tie, and occupies less space.

[0035] It is worth noting that in directions other than the direction of travel in which the first support 1 slides along the second support 2, the tensioning mechanism 5 may not be connected to the first support 1 in a force-transmitting manner. For example, in this embodiment, at least one of the clamping wheels of the tensioning mechanism 5 can slide relative to the first support 1 in the X1 and X2 directions perpendicular to the Y1 direction to adjust its position, thereby adjusting the distance between the two clamping wheels.

[0036] The tension sensor 7 can adopt various types of tension sensors, such as column tension sensors, plate ring tension sensors, pull rope tension sensors, etc. Different types of tension sensors can be selected and their installation methods can be adaptively changed, which can be done by technical personnel in this field.

[0037] In this embodiment, the second support 2 includes a limit seat 21 arranged opposite to the first support 1 in the Y2 direction, and the two ends of the tension sensor 7 are respectively fixedly connected to the first support 1 and the limit seat 21. In this embodiment, the Y2 direction is configured as the gravity direction, so the first support 1 always has a tendency to move in the Y2 direction. In a natural state, the first support 1 will slide down and be supported by the limit seat 21. When the tensioning mechanism 5 is started, the first support 1 moves up a distance. Once the cable tie is cut off, the first support 1 and the first motor 4, the tensioning mechanism 5, the reduction gear train 6 and other structures installed on the first support 1 can automatically reset downward. If the Y2 direction is not configured in the direction of gravity, the resetting of the first support 1 can also be achieved by an elastic member or a magnetic member. For example, the two ends of an elastic member act on the first support 1 and the second support 2 respectively, so that the first support 1 always has a tendency to move in the Y2 direction. When the first support 1 slides in the Y1 direction, the elastic member stores energy. Once the cable tie is cut off, the elastic member releases energy, so that the first support 1 is pressed toward the limit seat 21 along the Y2 direction. If a magnetic member is used, the magnetic member is configured to generate a repulsive force / attractive force on the first support 1 in the Y2 direction, so that the first support 1 always has a tendency to move in the Y2 direction.

[0038] Furthermore, the present embodiment further provides an adjustment mechanism 8 between the limit seat 21 and the first support 1. In a natural state when the tensioning mechanism 5 is not activated, the adjustment mechanism 8 supports the first support 1 and separates the limit seat 21 from the first support 1, so as to adjust the height of the first support 1 in a natural state when the tensioning mechanism 5 is not activated, or to adjust the initial position of the first support 1 relative to the second support 2. Figure 4 A cross-sectional view of the adjustment mechanism 8 is shown, which includes a base plate 86 fixedly connected to the limit seat 21, a first adjustment block 81 and a second adjustment block 82 matched by inclined surfaces in the Y1 direction, and a first limit plate 84 and a second limit plate 85 respectively arranged on both sides of the first adjustment block 81. The first limit plate 84 and the second limit plate 85 are both fixedly connected to the base plate 86, one end of the compression spring 83 acts on the second limit plate 85, and the other end acts on the first adjustment block 81. The second adjustment block 82 is used to resist the first support 1. An adjustment screw (not shown in the figure) is screwed on the first limit plate 84 and resists the first adjustment block 81. When the adjustment screw is rotated, the first adjustment block 81 moves forward or backward, thereby causing the second adjustment block 82 to rise or fall, thereby adjusting the initial position of the first support 1 sliding on the second support 2. This adjustment mechanism 8 actually converts the lifting movement of the second adjustment block 82 into the horizontal feed or retreat of the adjustment screw through the cooperation of the inclined surfaces of the first adjustment block 81 and the second adjustment block 82, so that the adjustment screw can be operated more easily in the horizontal direction. In other embodiments, the screw hole of the adjustment screw can actually be set to extend in the Y1 direction, so that a single adjustment screw can achieve the height position adjustment of the first support 1. Other adjustment mechanisms based on similar principles that use the self-locking property of threaded connections to lift the first support 1 can also be applied to this embodiment, or it is also feasible to use a self-locking structure of gear meshing as an adjustment mechanism, such as a gear rack structure. Of course, it is also feasible to use an adjustment mechanism that can automatically control the ejector rod to lift the first support 1 using a cylinder, oil cylinder, motor, etc. In short, as long as the adjustment mechanism 8 can adjust its own length in the Y1 direction and can achieve self-locking, it is feasible. By providing the adjustment mechanism 8, when the cable tie tensioning device is assembled, the present embodiment can adjust the initial spacing between the first support 1 and the limit seat 21, thereby adjusting the pre-tightening force of the first support 1 and the limit seat 21 on the tension sensor 7, thereby achieving zeroing of the tension sensor 7.

[0039] Next, we will introduce how to cut the cable tie. Figure 1 and Figure 5A cutting knife 9 is installed on the first support 1. The cutting knife 9 is driven and moved by a driving device such as a cylinder or a motor, and the tail of the cable tie is cut off by the movement of the cutting knife 9. The action of the cutting knife 9 can be automatically controlled by the controller, and because the present embodiment can detect the value of the tension applied by the tensioning mechanism 5 to the cable tie and accurately judge the tensioning degree of the cable tie according to the tension value measured by the tension sensor 7, the cutting knife 9 can be set to: the cutting action is not triggered until the value of the tension applied by the tensioning mechanism 5 to the cable tie reaches a preset standard value. The so-called preset standard value is the tension value applied by the tensioning mechanism 5 to the cable tie at a suitable tightening degree according to the actual bundling situation of the cable tie. In layman's terms, after the tension sensor 7 judges that the tensioning mechanism 5 has tightened the cable tie in place, the cutting knife 9 performs its cutting action, so as to ensure that the cable tie is cut after being tightened to a suitable degree. It can be understood that the tension of the tensioning mechanism 5 can be adjusted according to different types and specifications of cable ties, as well as the above-mentioned preset standard value.

[0040] like Figure 1 , Figure 5 and Figure 6The cable tie tensioning device also includes a third support 3, which is fixedly arranged, and the second support 2 is slidably connected to the third support 3, and the sliding stroke direction of the second support 2 is also in the Y1 and Y2 directions. A cutter position adjustment mechanism is installed on the second support 2 and the third support 3, and is used to control the second support 2 to slide relative to the third support 3, so as to adjust the position of the cutting knife 9. In this embodiment, the cutter position adjustment mechanism includes a second motor 10 fixedly connected to the second support 2, and a gear 11 is connected to the hub on the output shaft of the second motor 10. A rack 31 meshing with the gear 11 is fixedly provided on the third support 3. When the second motor 10 is started, the second support 2 is driven to slide relative to the third support 3 through the cooperation of the gear 11 and the rack 31. In this embodiment, the first support 1 follows the sliding stroke of the second support 2 along the third support 3. Specifically, in this embodiment, the Y2 direction is the gravity direction. The first support 1 presses downward against the limit seat 21 with its own weight, so that the first support 1 and the limit seat 21 are indirectly abutted. When the second support 2 rises, the limit seat 21 pushes the first support 1 to rise. When the second support 2 falls, the first support 1 also falls under the influence of gravity. If the Y2 direction is not the gravity direction, an elastic member or a magnetic member can be provided between the second support 2 and the first support 1 as described above so that the first support 1 always presses against the limit seat 21 along the Y2 direction. In short, the first support 1 slidably connected to the second support 2 follows the sliding stroke of the second support 2 along the third support 3, and the sliding position movement of the second support 2 relative to the third support 3 is equivalent to the sliding position movement of the first support 1 relative to the third support 3. The cutting knife 9 is installed on the first support 1, and the sliding position movement of the first support 1 relative to the third support 3 is the movement of the position of the cutting knife 9. Then, the position of the cutting knife 9 can be adjusted by the cutting knife position adjustment mechanism, thereby adjusting the cut length of the cable tie.

[0041] It is understandable that if the third support 3 and the cutter position adjustment mechanism are not used in other embodiments to further improve the position of the cutting knife 9, then the third support 3 and the cutter position adjustment mechanism can be directly cancelled, and the second support 2 can be set to be fixed. In this embodiment, in order to ensure that the second support 2 is fixed relative to the bundled member when the tensioning mechanism 5 is started, the cutter position adjustment mechanism needs to be set to be self-locking. For example, in this embodiment, when the second motor 10 adopts a self-locking motor (i.e., a motor that can automatically lock the rotating part after stopping working), a good self-locking effect can be achieved. And, in the cutter position adjustment mechanism of this embodiment, the second motor 10 can also be fixedly connected to the third support 3, and the corresponding rack 31 is changed to be fixedly connected to the second support 2. In addition to the gear rack structure, other transmission structures, such as a screw nut structure, can also be used. Or other driving devices can also be used to drive the second support 2 to slide relative to the third support 3, such as a cylinder or oil cylinder with a self-locking function that directly acts on the second support 2.

[0042] An overtravel detector is also provided on the second support 2 and the third support 3, which is used to detect whether the position adjustment of the second support 2 and the first support 1 by the cutter position adjustment mechanism is within the allowable travel range. In this embodiment, the overtravel detector includes a beam sensor 12 fixed on the second support 2 and a blocking portion 13 fixed on the third support 3. The sliding of the second support 2 relative to the third support 3 can trigger the blocking portion 13 to block or not block the beam sensor 12. The overtravel detector in this embodiment is configured as follows: once the sliding of the second support 2 relative to the third support 3 exceeds the allowable travel height, the blocking portion 13 just leaves the transmitting end and the receiving end of the beam sensor 12, that is, the blocking portion 13 does not block the beam sensor 12, thereby generating an early warning signal, so that the second support 2 and the first support 1 can be prevented from exceeding the allowable adjustment travel range and colliding with other components. The overtravel detector can be implemented by any displacement-triggered detector, such as a Hall sensor, an ultrasonic sensor, and even a micro switch, which are all feasible solutions.

[0043] Embodiment 2:

[0044] Based on Example 1, this embodiment provides a tension feedback method for a cable tie tensioning device, including: providing a tensioning mechanism, the tensioning mechanism being used to receive and stretch the tail of a cable tie that has been tied to a fixed tied piece, defining the direction in which the tensioning mechanism stretches the cable tie as the tension direction, setting the tensioning mechanism in a movable manner in the tension direction, measuring the reverse tension of the cable tie on the tensioning mechanism when the tensioning mechanism stretches the cable tie, and then judging whether the cable tie is tightened.

[0045] The tension feedback method provided in this embodiment sets the tension mechanism to be movable in the tension direction, and then can measure the reverse tension on the tension mechanism when the cable tie is stretched, and can accurately and intuitively obtain the value of the tension applied by the tension mechanism to the cable tie, accurately judge the tension degree of the cable tie, and easily know whether the step of automatically tying the cable tie by the cable tie tensioning device is qualified, thereby improving the production yield. It is also possible to more easily adjust the tension of the tension mechanism through the measured tension value, and more accurately control the tightness of the cable tie automatically tied by the cable tie tensioning device.

[0046] The tension feedback method further includes: after judging that the cable tie is tightened by the measured reverse tension value, cutting off the tail of the cable tie. This arrangement can ensure that the cable tie is tightened to a suitable degree before being cut off.

[0047] Furthermore, in the process of movably arranging the tensioning mechanism in the direction of the tensioning force, a first support and a second support that are slidably connected and matched are provided, the tensioning mechanism is installed on the first support, and the tensioning mechanism and the first support are arranged to be connected in a force-transmitting manner in the direction in which the first support slides along the second support, and the reverse tension at least has a component force in the direction in which the first support slides along the second support. In this way, the movably arranged tensioning mechanism can be realized with a simple and low-cost structure.

[0048] Furthermore, a tension sensor is arranged between the first support and the second support, and when the tensioning mechanism is started, the tension generated on the tension sensor by the relative sliding of the first support and the second support is measured.

[0049] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims will fall within the scope of protection of the present invention.

Claims

1. A cable tie tensioning device, comprising a tensioning mechanism, the tensioning mechanism being used to receive and stretch the tail of a cable tie tied to a fixed tied object, characterized in that: It also includes a first support, a second support and a tension sensor, wherein the second support is fixedly arranged relative to the bundled member, the first support is slidably connected to the second support, and the tensioning mechanism is installed on the first support; At least in the travel direction of the first support sliding along the second support, the tensioning mechanism and the first support are connected in a force-transmitting manner; the tensioning mechanism is configured such that the tension applied by the tensioning mechanism to the cable tie has at least a component force in the travel direction of the first support sliding along the second support; the two ends of the tension sensor are respectively connected to the first support and the second support to measure the reverse tension of the cable tie on the tensioning mechanism and the first support when the tensioning mechanism stretches the cable tie.

2. The cable tie tensioning device according to claim 1, characterized in that: The tensioning mechanism is hinged on the first support, and the rotation axis of the tensioning mechanism is fixed relative to the first support in the travel direction of the first support sliding along the second support.

3. The cable tie tensioning device according to claim 1, characterized in that: The second support includes a limit seat, which is arranged opposite to the first support and is arranged on one side of the sliding stroke direction of the first support. Both ends of the tension sensor are fixedly connected to the first support and the limit seat respectively.

4. The cable tie tensioning device according to claim 3, characterized in that: The first support is configured to always have a tendency to move toward the limiting seat.

5. The cable tie tensioning device according to claim 3, characterized in that: It also includes an adjustment mechanism, which separates the limit seat and the first support seat and is used to adjust the initial distance between the first support seat and the limit seat, thereby achieving zero adjustment of the tension sensor.

6. The cable tie tensioning device according to claim 1, characterized in that: It also includes a cutting knife for cutting off the tail of the cable tie. The cutting knife is configured to trigger the cutting action according to the tension value measured by the tension sensor, wherein the distance between the cutting knife and the bundled piece is adjustable.

7. The cable tie tensioning device according to claim 6, characterized in that: The cutting knife is arranged on the first support and also includes a third support and a cutting knife position adjustment mechanism. The third support is fixedly arranged, and the second support is slidably connected to the third support. The cutting knife position adjustment mechanism is installed on the second support and the third support, and is used to control the second support to slide relative to the third support, so as to adjust the position of the cutting knife. The cutting knife position adjustment mechanism has a self-locking function for the sliding control of the second support.

8. A tension feedback method for a cable tie tensioning device, characterized in that: include: A tensioning mechanism is provided, which is used to receive and stretch the tail of a cable tie that has been tied to a fixed tied object. The direction in which the tensioning mechanism stretches the cable tie is defined as the tension direction. The tensioning mechanism is movably arranged in the tension direction. When the tensioning mechanism stretches the cable tie, the reverse tension of the cable tie on the tensioning mechanism is measured, thereby judging whether the cable tie is tightened.

9. The tension feedback method of the cable tie tensioning device according to claim 8, characterized in that: Also includes: After judging that the cable tie is tightened by measuring the reverse tension value, cut off the tail of the cable tie.

10. The tension feedback method of the cable tie tensioning device according to claim 8, characterized in that: In the process of arranging the tensioning mechanism in a movable manner in the direction of the tensioning force, a first support and a second support that are slidably connected are provided, the tensioning mechanism is installed on the first support, and the tensioning mechanism and the first support are arranged to be connected so as to transmit force in the direction in which the first support slides along the second support, and the reverse tension has at least a component force in the direction in which the first support slides along the second support.

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