Separating device for wire or cable insulation

Abstract

The utility model discloses a separating device for insulating wires or cables. The separating device comprises a rack; the blocking assembly is used for blocking an insulating layer of the electric wire or the cable and allowing a conductor or a cable core to pass through; the connecting assembly is connected with the conductor or the cable core penetrating through the blocking assembly; the driving assembly is installed on the rack, the blocking assembly is fixed to the rack, and the driving assembly is connected with the connecting assembly; or the connecting assembly is fixed with the rack, and the driving assembly is connected with the blocking assembly. According to the utility model, an insulating layer in an electric wire can be easily separated from a conductor, or a cable core in a cable can be easily separated from the insulating layer, and the device has the characteristics of small damage to the conductor and the insulating layer, high efficiency, time saving and labor saving. And particularly, the problem that the conductor and the insulator of the similar PEEK (polyether-ether-ketone) insulated wire and cable are very difficult to separate is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables or cables, in particular to a separation device for insulating wires or cables. Background Art

[0002] Wires or cables transmit electricity or signals from one place to another. Wires are usually composed of a conductor and an outer insulation that wraps the conductor, and cables are usually composed of a cable core and an outer insulation that wraps the cable core (the outer insulation in the cable is called an outer sheath in the industry, and this application uses the unified terminology and calls it outer insulation), and the cable core has at least a conductor and an inner insulation that wraps the conductor. It can be seen from the structure of the wire or cable that the conductor and insulation are essential components of the wire or cable. Insulating materials usually include polyvinyl chloride (PVC), polyethylene (PE), cross-linked polyethylene (XLPE), cross-linked polyolefin (XLPO), polyetheretherketone (PEEK), etc. The insulating material is usually heated by an extruder and then wrapped around the conductor through die extrusion.

[0003] After wire or cable production is complete, it is usually necessary to sample the finished wire or cable for electrical and mechanical performance tests to verify that the finished wire or cable meets the corresponding requirements. For example, after sampling the external insulation, the mechanical performance test of the external insulation is performed to determine whether the product meets the requirements.

[0004] When conducting mechanical property tests on external insulation, the insulation must first be stripped from the conductor without damaging it. Insulation made from polyvinyl chloride (PVC), polyethylene (PE), cross-linked polyethylene (XLPE), and cross-linked polyolefin (XLPO) has a weak coating on the conductor, so stripping with a wire stripper or similar tool is usually sufficient.

[0005] For example, specialty high-temperature wires (PEEK wires) are key components in aviation, nuclear power, and shipbuilding. Traditional fluoroplastic wires are banned in many applications due to environmental regulations. Therefore, the market for specialty high-temperature wires (PEEK wires) is expected to grow significantly in the future. The United States is already developing standards for PEEK wires.

[0006] For insulation made of PEEK, PEEK is a linear aromatic semi-crystalline polymer material with unique comprehensive properties. It has excellent high temperature resistance and excellent electrical properties. PEEK has high strength and high viscosity. The tensile strength of PEEK is about 10 times that of polyvinyl chloride (PVC). Based on the properties of polyetheretherketone itself, polyetheretherketone has high insulation strength and strong coating on the conductor. It is very difficult to strip 100 mm of insulation from the conductor; either the conductor is pulled off or the insulation is damaged, which does not meet the standard requirements. Especially 1.5mm 2The conductor of wires or cables below 10mm is very easy to break. 2 For wires and cables of this size, the conductor pull-out force exceeds 800N, making it very difficult for operators to perform. Specialized high-temperature wires and cables (PEEK wires) require insulation stripping forces of around 800N, and the conductor (typically made of twisted metal wires) must not be damaged during the stripping process. Therefore, stripping the insulation of PEEK is extremely difficult.

[0007] The current method of stripping PEEK insulation is to use a cutting tool to cut the PEEK insulation according to the required size. One operator uses pliers to clamp the head of the insulation, and the other operator holds the cable. The two operators apply tension to strip the PEEK insulation from the cable. For this method, the operators are not only laborious, but also because the pulling force is inconsistent, it is easy to break the conductor, causing the conductor to remain on the inner wall surface of the insulation. When the stripped PEEK insulation is used for tests such as stretching, the interference of the residual metal wire causes inaccurate tests, so it is often not used for testing, and the above-mentioned stripping method is prone to failure. In addition, the above-mentioned method has already stretched the PEEK insulation during the stripping process, which will also cause inaccurate tests. Utility Model Content

[0008] The utility model provides a device for separating the insulation of wires or cables. The utility model can easily separate the insulation layer from the conductor in the wire, or separate the cable core from the insulation layer in the cable, and has the characteristics of little damage to the conductor and insulation, high efficiency, and time and labor saving.

[0009] The technical solutions to the above technical problems are as follows:

[0010] Separating devices for the insulation of wires or cables, comprising:

[0011] frame;

[0012] A barrier component that forms a barrier to the insulation layer of a wire or cable and allows the conductor or cable core to pass through;

[0013] a connection assembly connected to the conductor or cable core passing through the barrier assembly;

[0014] The driving assembly is mounted on the frame, the blocking assembly is fixed to the frame, and the driving assembly is connected to the connecting assembly; or

[0015] The connecting component is fixed to the frame, and the driving component is connected to the blocking component.

[0016] In the present invention, a portion of the conductor or cable core is blocked by the blocking assembly after passing through the blocking assembly, and the conductor or cable core is connected to the connecting assembly. The connecting assembly moves linearly under the action of the driving assembly to pull out the conductor or cable core, while the insulation layer is blocked by the blocking assembly and stabilized in its original position. Therefore, when the conductor or cable core is subjected to the pulling force of the connecting assembly, the insulation layer will not follow the movement of the conductor or cable core, and the conductor or cable core will eventually be separated from the insulation layer, that is, the required insulation layer will be peeled off. The conductor cross-section of the wire or cable is different, and the pulling force and speed used are also different. Therefore, wires or cables with different cross-sectional areas require different pulling forces and speeds.

[0017] The present invention uses the above-mentioned device to replace the manual stripping operation of the insulation layer, especially the stripping of the insulation layer with strong coating force on the conductor or cable core, which not only saves time and labor, but also does not damage the insulation layer, making the subsequent test data of the insulation mechanical properties true and reliable. In addition, because the clamping assembly clamps the conductor or cable core as a whole, the conductor or cable core will not be damaged during the stripping process, and the metal wire in the conductor or cable core will not remain in the insulation layer, which also ensures the authenticity of the subsequent insulation layer testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view of the device for separating the insulation of wires or cables according to the present invention.

[0019] Figure 2 It is a three-dimensional diagram of the first connecting component.

[0020] Figure 3 A perspective view of a blocking component.

[0021] Figure 4 Exploded view of the barrier assembly.

[0022] Figure 5 A side view of the connection assembly.

[0023] Figures 6a-6d Schematic diagram of the process of stripping the core and insulation layer of the sampled cable.

[0024] Symbols in the accompanying drawings:

[0025] Frame A, base 10, intermediate body 11, upper seat 12, first connecting component 13, sleeve 13a, connecting rod 13b, lock hole 13c, control panel 14.

[0026] Blocking component B, cylindrical component 20, cylinder 20a, first supporting component 20b, second connecting sleeve 20c, first hole 20d, second hole 20e, clearance port 20f, second connecting component 21, retaining ring 22, locking component 23.

[0027] Connecting assembly C, support base 30, support plate 31, movable plate 32, support rod 33, drive rod 34, spring 35, protruding teeth 36, handle 37.

[0028] Drive assembly D, screw 40, nut 41, linear guide 42, screw support 43, motor 44.

[0029] Insulation layer H, manually stripped portion H1. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0031] like Figures 1 to 5 As shown, the wire or cable insulation separation device of the present invention includes a frame A, a blocking component B, a connecting component C, and a driving component D. The following describes in detail the various components and the relationship between them.

[0032] The frame A includes a base 10, an intermediate body 11, an upper seat 12, and a first connecting component 13 connected to the blocking component B or the connecting component C. The two ends of the intermediate body 11 are respectively fixed to the base 10 and the upper seat 12. At least one end of the base 10 and the upper seat 12 extends beyond the side of the intermediate body 11. In this way, a groove is formed between the base 10, the intermediate body 11, and the upper seat 12, and the blocking component B, the connecting component C, and the driving component D are located in the groove.

[0033] The intermediate body 11 is a shell, in which a PCB board is installed. A control circuit (not shown in the figure) is provided on the PCB board. A control panel 14 is provided on the shell. The control panel 14 is provided with buttons and a display screen. The control panel 14 is electrically connected to the PCB board, and the PCB board is electrically connected to the drive component D. The operator can set the tension and peeling speed through the buttons. After obtaining these input signals, the PCB board outputs a control signal to control the operation of the drive component D.

[0034] The control circuit typically consists of a single-chip microcomputer and peripheral circuits. The structure of this control circuit for controlling tension and speed is known from the prior art and will not be described in detail here. If drive assembly D includes a motor and other components, the control circuit is used to control the operating current of drive assembly D, thereby varying the motor's tension and speed output. If drive assembly D includes a solenoid valve and a pneumatic or hydraulic cylinder, the control circuit is used to control the opening of the solenoid valve, thereby varying the speed and pressure of the gas or liquid fluid medium, thereby varying the pneumatic or hydraulic cylinder's tension and speed output.

[0035] The first connecting component 13 is fixed to one end of the upper seat 12. The first connecting component 13 includes a sleeve 13a and a connecting rod 13b. One end of the connecting rod 13b is fixed to the upper seat 12, and the other end of the connecting rod 13b is fixed to the sleeve 13a. A lock hole 13c is provided on the circumference of the sleeve 13a.

[0036] The blocking component B blocks the insulating layer H of the wire or cable and allows the conductor or cable core L to pass through. The blocking component B includes a cylindrical component 20, a second connecting component 21, and a blocking ring 22 that blocks the insulating layer H of the wire or cable and allows the conductor or cable core L to pass through. One end of the cylindrical component 20 is connected to one end of the second connecting component 21, and the blocking ring 22 is arranged at the other end of the cylindrical component 20.

[0037] In this embodiment, the second connecting component 21 is a rod-shaped component, and a through hole is provided on the second connecting component 21. The second connecting component 21 is inserted into the sleeve 13a. The locking component 23 is passed through the locking hole 13c and the through hole on the second connecting component 21 to fix the second connecting component 21 and the sleeve 13a into one. The second connecting component 21 can adopt a pin shaft or a cotter pin. In this embodiment, the second connecting component 21 preferably adopts a cotter pin. The locking component 23 can quickly tighten the second connecting component 21 and the sleeve 13a, or the second connecting component 21 can be separated from the sleeve 13a.

[0038] The cylindrical component 20 includes a cylindrical body 20a, a first supporting part 20b, and a second connecting sleeve 20c. The first supporting part 20b is provided with a first hole 20d and a second hole 20e. The first hole 20d and the second hole 20e constitute a stepped hole. One end of the cylindrical body 20a extends into the first hole 20d and is fixed to the first supporting part 20b. The retaining ring 22 cooperates with the stepped surface of the stepped hole.

[0039] In this embodiment, an internal thread is provided on the inner wall surface of the first support member 20b, and an external thread is provided on one end of the cylindrical body 20a. One end of the cylindrical body 20a extends into the first hole 20d and is threadedly connected to the first support member 20b, thereby securing the two. Furthermore, since wires or cables of different diameters require different center hole diameters for the retaining ring 22, a retaining ring 22 with a corresponding center hole diameter is required based on the wire or cable diameter. In this embodiment, during use, the retaining ring 22 is placed on the stepped surface of the stepped hole, i.e., the retaining ring 22 is not fixed to the first support member 20b. This allows for quick replacement of the retaining ring 22 when necessary.

[0040] The cylindrical component 20 also includes a connecting sleeve 20c with one end closed and the other end having an opening. The second connecting component 21 is fixed to one end of the connecting sleeve 20c. The inner wall of the connecting sleeve 20c is provided with an internal thread. The other end of the cylinder 20a is provided with an external thread. The connecting sleeve 20c is connected to the cylinder 20a through threads.

[0041] The cylindrical body 20a is provided with a clearance opening 20f on its circumference for inserting wires or cables into the inner cavity of the cylindrical body 20a. Before stripping the insulation layer H, the wires or cables enter the inner cavity of the cylindrical body 20a through the clearance opening 20f. When installing the retaining ring 22, the retaining ring 22 enters the inner cavity of the cylindrical body 20a through the clearance opening 20f. Therefore, the clearance opening 20f greatly facilitates the installation of the wires or cables and the retaining ring 22.

[0042] Of course, if the clearance opening 2f is not provided, the wire or cable can be placed into the inner cavity of the cylinder 20a from one end of the cylinder 20a first, and the conductor or cable core L can be passed through the retaining ring 22 and the first support component 20b, and then the first support component 20b can be connected to the cylinder 20a. Although the wire or cable can still be assembled with the blocking component B in the absence of the clearance opening 20f, this installation method is obviously not as simple as the method with the clearance opening 20f.

[0043] The connecting component C is connected to the conductor or cable core L passing through the blocking component B. In this embodiment, the connecting component C preferably adopts a clamping component, which can clamp the conductor or cable core L, thereby fastening the blocking component B to the conductor or cable core L.

[0044] The clamping assembly in this embodiment includes a support seat 30, a support plate 31, a movable plate 32, a support rod 33, and a drive rod 34. The movable plate 32 is located between the support seat 30 and the support plate 31. The support seat 30 is fixed to the drive assembly D. The support rod 33 passes through the support plate 31 and the movable plate 32 and is fixed to the support seat 30. The support rod 33 is fixedly connected to the support plate 31. The support rod 33 slides with the movable plate 32. The drive rod 34 passes through the support plate 31. The drive rod 34 is threadedly connected to the support plate 31, and the end of the drive rod 34 cooperates with the end face of the movable plate 32.

[0045] In this embodiment, the clamping assembly also includes a spring 35, which is sleeved on the support rod 33. One end of the spring 35 is against the support seat 30, and the other end of the spring 35 is against the movable plate 32. Through the action of the spring 35, the movable plate 32 and the end of the driving rod 34 are kept against each other.

[0046] In this embodiment, the support seat 30 and the movable plate 32 are provided with protruding teeth 36 on the end faces opposite to each other. When the support seat 30 and the movable plate 32 clamp the conductor or cable core L, the protruding teeth 36 can clamp the conductor or cable core L more tightly.

[0047] In this embodiment, the clamping assembly further includes a handle 37 , which passes through the drive rod 34 . The handle 37 can apply torque to the drive rod 34 , thereby pushing the movable plate 32 to generate a pressing force on the conductor or cable core L.

[0048] In this embodiment, the drive assembly D is mounted on the frame A, the blocking assembly B is fixed to the frame A, and the drive assembly D is connected to the connecting assembly C. Specifically, the second connecting member 21 is inserted into the sleeve 13a, and the locking member 23 is passed through the locking hole 13c and the through hole of the second connecting member 21 to fasten the second connecting member 21 to the sleeve 13a. The support base 30 is fixed to the drive assembly D.

[0049] Drive assembly D is a linear actuator. In this embodiment, the linear actuator includes a screw 40, a nut 41, a linear guide 42, a screw support 43, and a motor 44. The screw support 43 is fixed to the frame A, and the screw support 43 is fixed to the intermediate body 11 in the frame A. The screw 40 is connected to the screw support 43. The screw support 43 consists of a base and a bearing mounted on the base. The screw 40 is connected to the bearing so that the screw 40 can rotate relative to the screw support under the action of torsion. The motor 44 is located inside the base 10. The motor 44 is connected to the screw 40. The nut 41 is threadedly connected to the screw 40. The nut 41 slides with the linear guide 42. The linear guide 42 is fixed to the intermediate body 11. The blocking assembly B or the connecting assembly C is fixed to the nut 41.

[0050] The usage process of this embodiment is as follows:

[0051] As shown in Figure 6a, a section is cut from a finished wire or cable on the production line to obtain a sampling wire or cable. The material of the insulation layer H of the sampling wire or cable is polyetheretherketone. The sampling wire or cable is cut on the insulation layer H with a cutting tool to form an incision on the insulation layer H. The distance between the incision and the end of the sampling wire or cable is the manually stripped portion H1 of the insulation layer H (Figure 6b). The length of the manually stripped portion H1 is less than 60 mm. The manually stripped portion H1 is separated from the conductor or cable core L by a tool, for example, the manually stripped portion H1 is directly cut with a knife, or separated with a wire stripper. Since the manually stripped portion H1 is short, the above separation method is relatively easy. In addition, the purpose of separating the manually stripped portion H1 from the conductor or cable core L is to expose the conductor or cable core L of the wire or cable so as to facilitate clamping of the conductor or cable core L during subsequent formal stripping. Even if a small part of the conductor or cable core L is damaged, it will not affect the subsequent formal stripping.

[0052] After a short section of conductor or cable core L (e.g., 50 mm in length) is exposed through the above-mentioned process, the wire or cable is passed through the opening 20f and into the interior of the cylinder 20a. After the conductor or cable core L passes through the center hole of the retaining ring 22 and the first supporting member 20b, the head of the conductor or cable core L is exposed outside the blocking component B. The driving component D is started to rotate the motor 44 forward, and the motor 44 drives the screw rod 40 to rotate forward. The screw rod 40 drives the nut 41 to carry the connecting component C to the head of the conductor or cable core L (from Figure 1 The connecting component C moves upward (as shown in the figure), so that the head of the conductor or cable core L enters the gap space between the support seat 30 and the movable plate 32. Then, the motor stops working, the connecting component C stops feeding the conductor or cable core L, and the driving rod 34 is rotated by the handle 37. The driving rod 34 drives the movable plate 32 to move linearly along the support rod 33, so that the head of the conductor or cable core L is clamped between the movable plate 32 and the support seat 30.

[0053] After ensuring that the head of the conductor or cable core L is clamped and the end of the insulating layer H is against the end face of the retaining ring 22, the tension and speed are set through the control panel 14, and the drive component D is started to reverse the motor 44. The motor 44 drives the screw rod 40 to reverse, and the screw rod 40 drives the nut 41 to move linearly downward with the connecting component C. The connecting component C generates tension on the conductor or cable core L. Since the end of the insulating layer H is blocked by the retaining ring 22, the insulating layer H cannot move with the conductor or cable core L, thereby forcing the conductor or cable core L to gradually separate from the insulating layer H (Figure 6c).

[0054] As the driving component D continuously drives the connecting component C to move downward, the conductor or cable core L is finally completely separated from the insulating layer H, thereby stripping the insulating layer H and obtaining a separate insulating layer H for testing ( FIG. 6 d ).

[0055] The present invention is not limited to the above embodiments, for example:

[0056] The connecting component C can be fixed to the frame A, and the driving component D can be connected to the blocking component B.

[0057] In the blocking assembly B, the first supporting component 20b may not be used, and a threaded connection portion may be provided at one end of the blocking ring 22, and the threaded connection portion may be threadedly connected to the cylinder 20a. This method also facilitates replacement of the blocking ring 22 as needed.

[0058] The clamping assembly can use pneumatic fingers instead of the above structure.

[0059] The screw rod 40, nut 41 and motor 44 in the driving assembly D can be replaced by a pneumatic cylinder or a hydraulic cylinder.

[0060] The above disclosure is only a preferred embodiment of the present application, and it is certainly not intended to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the structures of the above embodiment can be implemented and equivalent changes made according to the claims of the present application are still within the scope of the present application.

Claims

1. A device for separating the insulation of wires or cables, characterized in that include: Rack (A); A barrier component (B) that forms a barrier to the insulation layer (H) of a wire or cable and allows the conductor or cable core (L) to pass through; a connecting assembly (C) connected to the conductor or cable core (L) passing through the barrier assembly (B); A driving assembly (D) is mounted on a frame (A), a blocking assembly (B) is fixed to the frame (A), and the driving assembly (D) is connected to the connecting assembly (C); or The connecting component (C) is fixed to the frame (A), and the driving component (D) is connected to the blocking component (B).

2. The device for separating the insulation of electric wires or cables according to claim 1, characterized in that: The frame (A) comprises a base (10), an intermediate body (11), an upper seat (12), and a first connecting component (13) connected to a blocking component (B) or a connecting component (C); two ends of the intermediate body (11) are respectively fixed to the base (10) and the upper seat (12); at least one end of the base (10) and the upper seat (12) extends beyond the side of the intermediate body (11); and the first connecting component (13) is fixed to one end of the upper seat (12).

3. The device for separating the insulation of electric wires or cables according to claim 1, characterized in that: The blocking component (B) comprises a cylindrical component (20), a second connecting component (21), and a blocking ring (22) for blocking the insulating layer (H) of the electric wire or cable and allowing the conductor or cable core (L) to pass through. One end of the cylindrical component (20) is connected to one end of the second connecting component (21), and the blocking ring (22) is arranged at the other end of the cylindrical component (20).

4. The device for separating the insulation of electric wires or cables according to claim 3, characterized in that: The cylindrical component (20) comprises a cylindrical body (20a) and a first supporting component (20b). The first supporting component (20b) is provided with a first hole (20d) and a second hole (20e). The first hole (20d) and the second hole (20e) form a stepped hole. One end of the cylindrical body (20a) extends into the first hole (20d) and is fixed to the first supporting component (20b). The retaining ring (22) cooperates with the stepped surface of the stepped hole.

5. The device for separating the insulation of electric wires or cables according to claim 4, characterized in that: The cylindrical component (20) further comprises a connecting sleeve (20c) having one end closed and the other end open, a second connecting component (21) being fixed to one end of the connecting sleeve (20c), an inner wall of the connecting sleeve (20c) being provided with an internal thread, and the other end of the cylindrical body (20a) being provided with an external thread, and the connecting sleeve (20c) and the cylindrical body (20a) being connected via threads.

6. The device for separating the insulation of electric wires or cables according to claim 4, characterized in that A clearance opening (20f) is provided on the circumferential surface of the cylinder (20a) for placing the wires or cables into the inner cavity of the cylinder (20a).

7. The device for separating the insulation of electric wires or cables according to claim 1, characterized in that: The connecting component (C) is a clamping component.

8. The device for separating the insulation of electric wires or cables according to claim 7, characterized in that: The clamping assembly comprises a support seat (30), a support plate (31), a movable plate (32), a support rod (33), and a driving rod (34). The movable plate (32) is located between the support seat (30) and the support plate (31). The support rod (33) passes through the support plate (31) and the movable plate (32) and is fixed to the support seat (30). The support rod (33) is fixedly connected to the support plate (31). The support rod (33) and the movable plate (32) are slidably matched. The driving rod (34) passes through the support plate (31). The driving rod (34) is threadedly connected to the support plate (31). The end of the driving rod (34) is matched with the end face of the movable plate (32).

9. The device for separating insulation of electric wires or cables according to claim 1, characterized in that: The drive assembly (D) is a linear drive.

10. The device for separating the insulation of electric wires or cables according to claim 9, characterized in that The linear drive comprises a screw rod (40), a nut (41), a linear guide rail (42), a screw rod support (43), and a motor (44). The screw rod support (43) is fixed to the frame (A), the screw rod (40) is connected to the screw rod support (43), the motor (44) is connected to the screw rod (40), the nut (41) is threadedly connected to the screw rod (40), the nut (41) is slidably matched with the linear guide rail (42), and the blocking component (B) or the connecting component (C) is fixed to the nut (41).

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