A threading machine and a lead wire thereof

Abstract

The utility model discloses a leading wire of threading machine, it includes: the working section (101) of the free end of leading wire and the connecting section (102) for being used for connecting with the leading wire reel of threading machine at the tail end, detachably connect between working section and connecting section. In addition, the utility model discloses a threading machine, it includes the leading wire (100) described in the utility model. The utility model when needing to replace leading wire, do not need to disassemble to whole threading machine, also do not need to replace the whole leading wire reel, only need to make the connecting place of working section and connecting section be located in the wire changing station, then the working section is detached from connecting section and replaces, can to make the component of being replaced only have working section, have also realized the convenience of wire changing operation while reducing the wire changing cost greatly, in addition, also have promoted the compatibility of leading wire.

Description

Technical Field

[0001] This utility model relates to an electric tool, and more particularly to a threading machine. Background Technology

[0002] A cable threader is a power tool used to pull cables or wires through conduits. The drive unit of the threader moves a lead wire into the conduit from one end and out from the other. The wire is then passed through the head of the lead wire. The drive unit is restarted to retract the lead wire, pulling the wire into and through the conduit under its traction. Once the desired position is reached, the motor stops, separating the wire from the lead wire, completing the threading process.

[0003] However, in actual use, the lead wire is very prone to wear and bending in the pipeline. Even under normal operating conditions, the continuous feeding and retraction of the lead wire will cause it to wear out. Therefore, the lead wire is a consumable part and needs to be replaced frequently.

[0004] However, the current method of replacing the lead wire is to disassemble the entire threading machine, remove the lead wire from the lead wire reel, and replace it as a whole. This operation is very complicated and ordinary users cannot replace the lead wire themselves.

[0005] To avoid complicated operations, another replacement method is to replace the entire lead spool with the lead wire wrapped around it, but this method is more expensive. Utility Model Content

[0006] One of the objectives of this invention is to provide a lead wire for a threading machine that allows for easy replacement of damaged or worn lead wires, and is simple to operate and inexpensive.

[0007] To achieve the above objectives, this utility model proposes a lead wire for a threading machine, comprising: a working section located at the free end of the lead wire and a connecting section at the tail end for connecting to the lead wire reel of the threading machine, wherein the working section and the connecting section are detachably connected.

[0008] Furthermore, in the lead wire described in this utility model, the working section and the connecting section are detachably connected by a connector.

[0009] Furthermore, in the lead wire described in this utility model, the connector is configured to rotate about an axis relative to the connecting section and / or the working section.

[0010] Furthermore, in the lead wire described in this utility model, the connector includes a first connector and a second connector detachably connected to the first connector, wherein the first connector is connected to the working section and the second connector is connected to the connecting section.

[0011] Furthermore, in the lead wire described in this utility model, one of the first connector and the second connector is a threaded male end, and the other is a threaded female end.

[0012] Furthermore, in the lead wire described in this utility model, the second connector is configured to rotate about an axis relative to the connecting segment.

[0013] Another objective of this utility model is to provide a threading machine that, while meeting the basic usage requirements of a threading machine, allows for economical and convenient replacement of the lead wire.

[0014] To achieve the above objectives, this utility model also provides a threading machine, which includes: a housing with a lead wire outlet, a lead wire reel, a driving device, and a control element, wherein the control element controls the driving device to drive the lead wire to extend out from the lead wire outlet of the housing; in addition, the threading machine also includes the lead wire as described above.

[0015] Furthermore, the threading machine of this utility model also includes: a thread-changing trigger switch, which is connected to the control element. When the thread-changing trigger switch is triggered, it sends a signal to the control element so that the control element controls the drive device to drive the lead wire feed so that the detachable connection between the working section and the connecting section is located at the thread-changing station.

[0016] Furthermore, the threading machine of this utility model also includes a sensing component, which is data connected to the control element. The control element determines whether the detachable connection between the working section and the connecting section is located at the thread changing station based on the detection signal transmitted by the sensing component, and controls the drive device to stop driving the lead wire feed when it is located at the thread changing station.

[0017] Furthermore, in the threading machine described in this utility model, the sensing component includes:

[0018] A counting wheel is rotatably mounted about its own axis, and its circumferential surface contacts the lead wire. The counting wheel is provided with a magnetic element.

[0019] A Hall sensor, corresponding to a magnetic element, is connected to the control element to send a detection signal characterizing the lead feed amount to the control element.

[0020] Furthermore, in the threading machine described in this utility model, a friction ring is sleeved on the outer circumference of the counting wheel, and the outer circumferential surface of the friction ring is provided with protruding teeth.

[0021] Furthermore, in the threading machine described in this utility model, the sensing component further includes:

[0022] A counting wheel cantilever, which is rotatably mounted about a cantilever hinge axis, wherein the counting wheel is rotatably mounted on the counting wheel cantilever;

[0023] An elastic element is configured to apply an elastic force to the cantilever of the counting wheel so that the outer circumferential surface of the counting wheel is always in contact with the lead wire.

[0024] When the lead wire of the threading machine described in this utility model reaches the end of its service life and needs to be replaced, there is no need to disassemble the entire threading machine or replace the lead wire reel. It is only necessary to place the connection between the working section and the connecting section at the wire changing station, and then remove the working section from the connecting section for replacement. This means that only the working section is replaced, which greatly reduces the cost of wire replacement. Furthermore, it does not require opening the casing of the threading machine, making the operation very convenient. Attached Figure Description

[0025] Figure 1 This diagram shows a structural schematic of the lead wire of the threading machine according to one embodiment of the present invention.

[0026] Figure 2 This shows the state in which the leads of the threading machine described in this utility model are separated from each other in one embodiment.

[0027] Figure 3 This is a schematic diagram of the threading machine of the present invention in one embodiment, shown from an internal perspective.

[0028] Figure 4 The internal structure of the threading machine according to one embodiment of the present invention is partially shown.

[0029] Figure 5 The structure of the sensing component of the threading machine according to this invention is shown in one embodiment.

[0030] Figure 6 The friction ring of the threading machine described in this utility model is shown in one embodiment.

[0031] Figure 7 from Figure 5 The rear view shows the structure of the sensing component of the threading machine according to one embodiment of the present invention. Detailed Implementation

[0032] The threading machine and the threading machine described in this utility model will be further explained and described below with reference to the accompanying drawings and specific embodiments. However, such explanation and description do not constitute an undue limitation on the technical solution of this utility model.

[0033] When the threading machine is working, the drive unit propels the lead wire into the pipe from one end to the other. The wire is then passed through the head of the lead wire. The drive unit is restarted to retract the lead wire, pulling the wire into and through the pipe. Once the designated position is reached, the motor stops, separating the wire from the lead wire, completing the threading process. In actual use, the lead wire is highly susceptible to wear and bending within the pipe. Even under normal operating conditions, the continuous feeding and retraction of the lead wire will cause wear. Therefore, the lead wire is a consumable part and needs frequent replacement.

[0034] However, the current method of replacing the lead wire requires disassembling the entire threading machine, removing the lead wire from the lead wire reel, and replacing it as a whole. This operation is very complicated and costly.

[0035] Therefore, in order to facilitate the replacement of the lead wire of the threading machine, this utility model provides a threading machine lead wire in one embodiment, which can conveniently replace damaged or worn lead wires, and is simple to operate and inexpensive.

[0036] like Figure 1 As shown, in some embodiments, the lead 100 of the threading machine may include a working section 101 located at the free end P of the lead and a connecting section 102 at the tail end for connection with the lead reel of the threading machine, wherein the working section 101 and the connecting section 102 are detachably connected.

[0037] With this setup, when the working section is damaged or worn and needs to be replaced, the working section 101 can be directly removed from the connecting section 102, and a new working section can be connected to the connecting section to complete the replacement of the lead wire. During this process, the connecting section connected to the lead wire reel does not need to be replaced.

[0038] Furthermore, by setting up replaceable working sections, this invention can further improve the applicability and compatibility of the lead wire by selecting the material and length of the working sections.

[0039] In some specific implementation methods, such as Figure 1 As shown, the working section 101 and the connecting section 102 can be detachably connected by the connector 200.

[0040] Of course, in other implementations, a direct detachable connection between the working section's tail end and the connecting section's head end can also be achieved by setting the shape and / or structure of these two ends. For example, matching hooks and grooves can be provided at the working section's tail end and the connecting section's head end to form a hook structure.

[0041] In some specific embodiments, the connector 200 is configured to rotate about an axis relative to the connecting segment 102 and / or the working segment 101. With this configuration, when it is necessary to connect or disconnect the connecting segment and the working segment, the connection or disconnection of the working segment and the connecting segment can be achieved simply by rotating the connector, without the connecting segment or the working segment rotating, preferably without either the connecting segment or the working segment rotating, thereby effectively preventing lead wire twisting.

[0042] For example, in some more specific implementations, such as Figure 1 As shown, the connector 200 includes a first connector 201 and a second connector 202 detachably connected to the first connector 201. The first connector 201 is connected to the working section 101, and the second connector 202 is connected to the connecting section 102. The second connector may have a slot, and the first connector may have a snap fastener. The first connector can rotate relative to the working section, and the second connector can rotate relative to the connecting section. Therefore, when it is necessary to connect or disconnect the connecting section and the working section, the first connector and the second connector can rotate relative to each other while keeping the connecting section and the working section stationary. This allows for the connection or disconnection of the working section and the connecting section, while also effectively preventing lead wire twisting.

[0043] In some more specific embodiments, the first connector 201 and the working section 101 may be detachably connected, while in other more specific embodiments, the first connector 201 and the working section 101 may be fixedly connected.

[0044] Similarly, in some more specific embodiments, the second connector 202 may also be detachably connected to the working section 101.

[0045] like Figure 2 As shown, in some more specific embodiments, one of the first connector 201 and the second connector 202 is a threaded male end, and the other is a threaded female end. That is, in this embodiment, the working section 101 and the connecting section 102 are detachably connected by a threaded connection.

[0046] For example, in a more specific implementation, such as Figure 2 As shown, the first connector 201 can be configured as a threaded male end with external threads, and the second connector 202 can be configured as a threaded female end with internal threads. Of course, in other embodiments, the first connector can also be configured as a threaded female end with internal threads, and the second connector can be configured as a threaded male end with external threads.

[0047] In some more specific embodiments, when the first and second connectors are connected by threads, the second connector is configured to rotate about an axis relative to the connecting section. This configuration ensures that when the first and second connectors are connected by screwing, the connecting section, the working section, and the first connector do not rotate; only the second connector can rotate, thereby effectively preventing lead wire twisting.

[0048] In one specific embodiment, the second connector can be configured as a sleeve with internal threads, which is axially fixed at the beginning of the connecting section and can rotate relative to the connecting section in the circumferential direction.

[0049] In other embodiments, the first and second connectors may not be configured as threaded connections, but rather as other connection structures, such as a pin and a corresponding sleeve for accommodating the pin, wherein the pin and sleeve can be connected by an interference fit.

[0050] In another embodiment of this invention, a threading machine is also provided.

[0051] like Figure 3 As shown, in some embodiments, the threading machine includes a housing 300 with a lead wire outlet 301 from which the lead wire 100 can extend. Furthermore, the threading machine includes a drive unit 400 and a control element. The drive unit includes a motor (not shown), a drive wheel 401, and a clamping wheel 402. A lead wire reel (not shown) is mounted on the drive wheel 401 of the drive unit 400. The control element (e.g., a PCB board) controls the rotation of the motor of the drive unit. The motor drives the drive wheel 401 to rotate, which in turn drives the lead wire reel to rotate. The lead wire is positioned between the clamping wheel 402 and the lead wire reel. In this way, by controlling the direction of rotation of the motor, the lead wire can be fed out or retracted under the action of friction. It should be noted that other components and working processes of the threading machine are known technologies and are not improvements of this invention; therefore, they will not be described in detail here.

[0052] The improvement of the threading machine described in this utility model lies at least in its use of the lead wire 100 as described above. By using the lead wire 100, when thread replacement is required, the drive device can be triggered by the electrical switch 500 to push the lead wire out of the housing to its working limit position. For example, in some specific embodiments, the working limit position means that the entire length of the working section (e.g., 10m, 20m, or 30m) has been pushed out of the housing. Based on this, the electrical switch 500 triggers the drive device to continue pushing the lead wire out of the housing a certain distance (e.g., 0.3m, 0.5m, 0.8m, or 1m), so that the connection between the working section and the connecting section also extends out of the housing and is located at the thread replacement station. Then, the working section 101 is detached from the connecting section 102, and a new working section is connected to the connecting section. Finally, the electrical switch is triggered, the motor reverses, causing the drive device to retract the lead wire, and the connection between the working section and the connecting section re-enters the housing, thus completing the thread replacement.

[0053] As can be seen from the above embodiments, the feeding and retraction of the lead wire in the normal working state of the threading machine, as well as the feeding and retraction of the wire changing, are all triggered by the electric switch 500, that is, normal threading and wire changing share the same switch. To further prevent misoperation, in some other embodiments, in addition to the electric switch 500 of the threading machine, the threading machine of this utility model also includes a wire changing trigger switch 600, which is connected to the control element and used to trigger the wire changing function. That is, when the wire changing trigger switch 600 is triggered, it sends a signal to the control element, and the control element controls the drive device to drive the lead wire 100 to feed further until the detachable connection between the working section 101 and the connecting section 102 is located at the wire changing station. Then the working section 101 is removed from the connecting section 102, and a new working section is connected to the connecting section. Then the wire changing trigger switch 600 is triggered again, the motor reverses, causing the drive device to retract the lead wire, and the connection between the working section and the connecting section re-enters the housing, thereby completing the lead wire replacement. Therefore, in this implementation, the feed and retraction of the lead wire in normal working condition is controlled by the electric switch 500, while the feed and retraction during the wire changing process is controlled by the wire changing trigger switch 600. This effectively avoids the erroneous operation of the lead wire being in the wire changing position due to repeated operation of the electric switch when wire changing is not required.

[0054] It should be noted that the connection between the working section and the connecting section being located outside the housing is only one scenario of the "wire changing station" described in this utility model, and is not intended to limit it. In this utility model, the "wire changing station" refers to a position where the wire is fed to a location where the operator can easily and directly disassemble the working section. In some other embodiments, the connection between the working section and the connecting section being located inside the housing can also be considered a wire changing station. In this case, an inspection window can be opened on the housing, allowing the operator to change the working section through the inspection window. In some cases, the inspection window is closed during the normal operation of the threading machine, and is only opened by the control element when the wire changing trigger switch 600 is triggered, causing the lead wire to be in the wire changing station.

[0055] Furthermore, it should be noted that the control element described in this utility model can be implemented based on the control element originally present in the threading machine, commonly a printed circuit board integrating electronic devices. In addition, it can be implemented in any suitable manner, for example, in the form of a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro)processor, logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers. Moreover, those skilled in the art will also know that, in addition to implementing the control element in a purely computer-readable program code manner, the control element can also be implemented through other hardware components, or a combination of software and hardware. The PCB board described in this utility model is merely exemplary and is not intended to limit the control element.

[0056] It should also be noted that the line change trigger switch 600 can be a physical switch, or it can be other types of switches, such as an HMI (Human-Machine Interface) switch or a voice control switch.

[0057] In addition, to further accurately determine the feed position of the lead wire, in some embodiments, the threading machine may also include a sensing component that is data-connected to the control element. The control element determines whether the detachable connection between the working section and the connecting section is located at the wire changing station based on the detection signal transmitted by the sensing component, and controls the drive device to stop driving the lead wire feed (i.e., stop the machine) when it is located at the wire changing station.

[0058] In some more specific implementations, such as Figure 4 and Figure 5As shown, the sensing component 700 may include a counting wheel 701, which is rotatably arranged about its own axis 7011, and its circumferential surface 7012 contacts the lead wire 100. With this arrangement, when the lead wire is fed along its axial direction, the counting wheel 701 will rotate about its own axis 7011 under the action of friction, and the number of rotations of the counting wheel 701 represents the amount of lead wire feed. A magnetic element 702 is provided on the counting wheel 701, and a Hall sensor 703 is disposed corresponding to the magnetic element. During the rotation of the counting wheel 701, the Hall sensor senses the position change of the magnetic element 702, thereby sending a detection signal representing the amount of lead wire feed to the control element.

[0059] In some more specific embodiments, to further improve the detection accuracy of the counting wheel, a friction ring 704 can be fitted on the outer circumference of the counting wheel 701, such as... Figure 6 As shown, the outer circumferential surface of the friction ring 704 may be provided with protruding teeth 7041 to further increase the friction force.

[0060] Considering that the outer diameter of the lead wire in this invention may change at the connection between the working section and the connecting section, for example, the outer diameter may increase or decrease at the connection, in order to further ensure and improve the detection accuracy of the counting wheel, such as... Figure 5 and Figure 7 As shown, the sensing assembly 700 may further include: a counting wheel cantilever 705, which is rotatably disposed about a cantilever hinge axis 706, for example, rotatably disposed within a housing, while the counting wheel 701 is rotatably disposed on the counting wheel cantilever; an elastic element 707 is used to apply an elastic force to the counting wheel cantilever so that the outer circumferential surface of the counting wheel is always in contact with the lead wire. With this arrangement, the counting wheel 701 can always remain in close contact with the lead wire 100 and swing with changes in the outer diameter of the lead wire without jamming or slipping.

[0061] In some more specific implementations, such as Figure 7 As shown, the elastic element 707 can be a torsion spring, with its two legs abutting against the counting wheel cantilever and the housing respectively, thereby forming an elastic force applied to the counting wheel cantilever.

[0062] It should be noted that although the structure of the sensing component in some embodiments has been described in detail above, in other embodiments, the lead wire feed amount can be sensed in other ways. For example, the feed time of the lead wire can be measured by a timer and converted into the feed amount, or the number of rotations of the motor can be sensed and converted into the feed amount.

[0063] Therefore, when the lead wire of the threading machine described in this utility model reaches the end of its service life and needs to be replaced, it is not necessary to disassemble the entire threading machine or replace the entire lead wire reel. It is only necessary to place the connection between the working section and the connecting section at the wire changing station, and then remove the working section from the connecting section for replacement. This means that only the working section is replaced, which greatly reduces the cost of wire replacement and also makes the wire replacement operation more convenient. In addition, it also improves the compatibility of the lead wire.

[0064] It should be noted that the prior art within the scope of protection of this utility model is not limited to the embodiments given in this utility model document. All prior art that does not contradict the solution of this utility model, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the scope of protection of this utility model.

[0065] Furthermore, the combination of the technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.

[0066] It should also be noted that the embodiments listed above are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments, and any similar changes or modifications made thereto that can be directly derived or easily conceived by those skilled in the art from the content disclosed in this utility model should fall within the protection scope of this utility model.

Claims

1. A lead wire for a threading machine, characterized in that, include: The working section (101) located at the free end (P) of the lead wire (100) and the connecting section (102) at the tail end for connection with the lead wire reel of the threading machine are detachably connected.

2. The lead wire as described in claim 1, characterized in that, The working section and the connecting section are detachably connected by a connector (200).

3. The lead wire as described in claim 2, characterized in that, The connector is configured to rotate about an axis relative to the connecting section and / or the working section.

4. The lead wire as described in claim 2, characterized in that, The connector includes a first connector (201) and a second connector (202) detachably connected to the first connector, wherein the first connector is connected to the working section and the second connector is connected to the connecting section.

5. The lead wire as described in claim 4, characterized in that, One of the first connector and the second connector is a threaded male end, and the other is a threaded female end.

6. A threading machine, comprising: The device comprises a housing (300) having a lead wire outlet (301), a lead wire reel, a drive unit (400), and a control element, the control element controlling the drive unit to drive the lead wire to extend from the lead wire outlet of the housing; characterized in that the threading machine further comprises a lead wire (100) as described in any one of claims 1-5.

7. The threading machine as described in claim 6, characterized in that, Also includes: A line-changing trigger switch (600) is connected to the control element. When the line-changing trigger switch is triggered, it sends a signal to the control element so that the control element controls the drive device to drive the lead wire feed so that the detachable connection between the working section and the connecting section is located at the line-changing station.

8. The threading machine as described in claim 6, characterized in that, It also includes a sensing component (700) which is data-connected to the control element. The control element determines whether the detachable connection between the working section and the connecting section is located at the line-changing station based on the detection signal transmitted by the sensing component, and controls the drive device to stop driving the lead wire feed when it is located at the line-changing station.

9. The threading machine as described in claim 8, characterized in that, The sensing component includes: A counting wheel (701) is rotatably arranged about its own axis and its circumferential surface contacts the lead wire. The counting wheel is provided with a magnetic element (702). A Hall sensor (703) is provided with a corresponding magnetic element. The Hall sensor is connected to the control element to send a detection signal characterizing the lead feed amount to the control element.

10. The threading machine as described in claim 9, characterized in that, A friction ring (704) is fitted on the outer circumference of the counting wheel, and the outer circumferential surface of the friction ring is provided with protruding teeth (7041).

11. The threading machine as described in claim 9, characterized in that, The sensing component also includes: A counting wheel cantilever (705) is rotatably mounted about a cantilever hinge axis (706), and the counting wheel is rotatably mounted on the counting wheel cantilever; An elastic element (707) is configured to apply an elastic force to the counting wheel cantilever so that the outer circumferential surface of the counting wheel is always in contact with the lead wire.

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