Shearing device for PVC flat cable pipe

Abstract

The utility model belongs to the technical field of flat cable pipe production, and discloses a shearing device for a PVC flat cable pipe, which comprises a fixing assembly for clamping the flat cable pipe from the upper end and the lower end, and a rotating assembly installed in the middle of the fixing assembly and used for rotationally cutting the circumference of the flat cable pipe, the rotating assembly is provided with a cutting assembly which is used for cutting the flat cable pipe and can adjust the cutting depth in a lifting mode. The rotating assembly comprises a rotating frame, and a rotating ring is rotationally installed on the rotating frame. According to the shearing device for the PVC flat cable pipe, through the arrangement of rotationally cutting the circumference of the flat cable pipe, only the pipe wall of the flat cable pipe needs to be cut through, the flat cable pipe does not need to be completely cut off by a cutter, the cutting depth is reduced, and the situation that the cutting face is heated and deformed due to too large friction is avoided; by rotationally cutting the circumference of the flat cable pipe, the uniformity of the tangent plane of the flat cable pipe is improved; and the cutting depth is adjusted in a lifting manner, so that the requirements of flat cable pipes with different pipe diameters and pipe thicknesses are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable conduit production, in particular to a shearing device for PVC cable conduits. Background Art

[0002] The cable duct is also called the wire threading tube, and its full name is "insulated electrical conduit for construction". Generally speaking, it is a white hard PVC wire tube that is anti-corrosion, anti-leakage, and used for threading wires. When wiring, the wires are passed through the cable duct to protect the internal wires and increase the service life of the wires. During production, the cable duct needs to be cut into different lengths according to customer needs for easy use and transportation, so a cable duct cutting device is needed.

[0003] In contrast, the Chinese patent with authorization announcement number CN219724749U discloses a pipe cutting machine, including a feeding device box, a stable base is arranged at the lower end of the feeding device box, a fixed clamping seat is installed on one side of the feeding device box, a clamping cylinder 1 is installed on both sides of the fixed clamping seat, a clamping seat is installed on one side of the clamping cylinder 1, a supporting roller is installed inside the fixed clamping seat, a clamping cylinder 2 is installed above the fixed clamping seat, an extrusion seat is installed below the clamping cylinder 2, a transverse mounting frame is arranged at the upper end of the feeding device box, a cylinder is installed at one end of the transverse mounting frame, a transmission box is installed below the cylinder, a motor is installed above one end of the transmission box, a rotating seat is installed on one side of the transmission box, and a cutting blade is installed on one side of the rotating seat.

[0004] The above patent adopts the setting of cutting the pipe downward. As the cutting depth increases, the contact area between the cutting blade and the cutting surface of the pipe increases, resulting in increased friction between the cutting blade and the cutting surface. The heat generated by the friction will cause the cutting surface of the pipe to deform due to heat, affecting the cutting quality. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide a shearing device for PVC cable conduits to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A shearing device for a PVC cable tube, comprising a fixing assembly for clamping the cable tube from both ends, and a rotating assembly installed in the middle of the fixing assembly for rotating and cutting the circumference of the cable tube, wherein the rotating assembly is provided with a cutting assembly for cutting the cable tube and capable of lifting and lowering to adjust the cutting depth;

[0008] The rotating assembly comprises a rotating frame, a rotating ring is rotatably mounted on the rotating frame, a gear ring is mounted outside the rotating ring, a gear is meshed under the gear ring, and a rotating motor is mounted in front of the gear;

[0009] The cutting assembly includes a support frame, a fixing plate is arranged on the top of the support frame, an electric push rod is installed on the fixing plate, a mounting plate is arranged on the bottom of the electric push rod, a cutting machine is installed under the mounting plate, and a plurality of limit rods are evenly arranged between the mounting plate and the fixing plate.

[0010] Furthermore: the fixing component includes a base plate, two lifting frames are symmetrically arranged at the front and rear ends of the base plate, two lifting plates are symmetrically installed on the upper and lower lifting frames, two clamping plates are symmetrically arranged on the opposite surfaces of the two lifting plates, two positive and negative threaded screw rods are symmetrically arranged at both ends of the two lifting plates, a synchronous wheel is arranged on the top of the positive and negative threaded screw rod, a synchronous belt is installed between the two synchronous wheels, and a lifting motor is installed at the bottom of the positive and negative threaded screw rod on one side.

[0011] Furthermore: the rotating frame is made of 45# material, and the gear ring is made of 40Cr material.

[0012] Furthermore: four limiting rods are provided, and the limiting rods are slidably connected to the fixing plate.

[0013] Furthermore: the clamping surface of the splint is an arc-shaped surface and is provided with a buffer layer.

[0014] Furthermore: the synchronous wheel is key-connected to the forward and reverse threaded lead screw.

[0015] Compared with the prior art, the beneficial effects are:

[0016] 1. By rotating the setting of cutting the circumference of the cable tube, it is only necessary to cut through the wall of the cable tube without using a cutting knife to completely cut off the cable tube, thus reducing the cutting depth and avoiding deformation of the cutting surface due to heat caused by excessive friction;

[0017] 2. The setting of rotating and cutting the circumference of the cable tube improves the uniformity of the cross section of the cable tube;

[0018] 3. The cutting depth can be adjusted by lifting and lowering to meet the needs of cable trays with different diameters and thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a shearing device for PVC cable conduit according to the utility model;

[0020] Figure 2 This is an axonometric diagram of a fixing assembly of a shearing device for PVC cable conduit according to the utility model;

[0021] Figure 3 This is a front view of a rotating assembly of a shearing device for PVC cable conduit according to the utility model;

[0022] Figure 4 It is an axonometric view of a cutting assembly of a shearing device for PVC cable conduits described in the utility model.

[0023] In the accompanying drawings, 101, base plate; 102, lifting frame; 103, lifting plate; 104, clamping plate; 105, forward and reverse threaded screw; 106, synchronous wheel; 107, synchronous belt; 108, lifting motor; 201, rotating frame; 202, rotating ring; 203, gear ring; 204, gear; 205, rotating motor; 301, supporting frame; 302, fixing plate; 303, electric push rod; 304, mounting plate; 305, cutting machine; 306, limiting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 A shearing device for PVC cable tubes includes a fixed component for clamping the cable tubes from both ends, and a rotating component installed in the middle of the fixed component for rotating and cutting the circumference of the cable tubes. The rotating component is provided with a cutting component for cutting the cable tubes and can be raised and lowered to adjust the cutting depth.

[0026] In this embodiment, the fixing assembly includes a base plate 101, two lifting frames 102 are symmetrically arranged at the front and rear ends of the base plate 101, two lifting plates 103 are symmetrically installed on the lifting frame 102, two lifting plates 103 are symmetrically arranged on the opposite surfaces, two clamping plates 104 are symmetrically arranged at both ends of the two lifting plates 103, two positive and negative threaded screw rods 105 are symmetrically arranged at the top of the positive and negative threaded screw rods 105, a synchronous wheel 106 is arranged between the two synchronous wheels 106, a lifting motor 108 is installed at the bottom of the positive and negative threaded screw rods 105 on one side, and the clamping surface of the clamping plate 104 is an arc shaped surface, and a buffer layer is provided, the synchronous wheel 106 is connected with the positive and negative threaded screw rod 105 with a flat key, and the two ends of the cable tube are placed between the front and rear two pairs of clamping plates 104, and the lifting frames 102 at both ends of the bottom plate 101 support the lifting motor 108 to drive the positive and negative threaded screw rod 105 and the synchronous wheel 106 above it to rotate, and the synchronous wheel 106 and the positive and negative threaded screw rod 105 below it are driven to rotate through the synchronous belt 107 away from the lifting motor 108 side, thereby pushing the lifting plate 103 from both sides to drive the clamping plate 104 to move relative to each other, clamping the two ends of the cable tube from the front and rear sides to complete the fixation;

[0027] In this embodiment: the rotating assembly includes a rotating frame 201, a rotating ring 202 is rotatably mounted on the rotating frame 201, a gear ring 203 is mounted outside the rotating ring 202, a gear 204 is meshed below the gear ring 203, a rotating motor 205 is mounted in front of the gear 204, the rotating frame 201 is made of 45# material, the gear ring 203 is made of 40Cr material, the rotating motor 205 drives the gear 204 to mesh with the gear ring 203 to drive the rotating ring 202 to rotate under the support of the rotating frame 201, thereby driving the cutting assembly below it to rotate around the cable tube, and rotating cutting is performed on the circumference of the cable tube wall;

[0028] In this embodiment: the cutting assembly includes a support frame 301, a fixed plate 302 is arranged on the top of the support frame 301, an electric push rod 303 is installed on the fixed plate 302, a mounting plate 304 is arranged at the bottom of the electric push rod 303, a cutter 305 is installed under the mounting plate 304, four limit rods 306 are evenly arranged between the mounting plate 304 and the fixed plate 302, the limit rods 306 are slidably connected to the fixed plate 302, the support frame 301 supports the electric push rod 303 to extend through the fixed plate 302 so that the mounting plate 304 drives the cutter 305 to move downward along the limit rods 306 until the wall of the cable tube is just cut through, at this time, the rotating assembly drives the cutter 305 below it to rotate around the cable tube through the support frame 301, and performs rotational cutting on the circumference of the cable tube wall to avoid excessive cutting depth and excessive heat, which causes the cable tube to be deformed due to heat.

[0029] Working principle: Place the two ends of the cable tube between the front and rear pairs of clamping plates 104, and align the cutting position with the cutting machine 305. The lifting frames 102 at both ends of the bottom plate 101 support the lifting motor 108 to drive the positive and negative threaded screw 105 and the synchronous wheel 106 above it to rotate, and drive the synchronous wheel 106 away from the lifting motor 108 and the positive and negative threaded screw 105 below it to rotate through the synchronous belt 107, thereby pushing the lifting plate 103 from both sides to drive the clamping plate 104 to move relative to each other, clamping the two ends of the cable tube from the front and rear sides to complete the fixation; Subsequently, the support frame 301 supports the electric push rod 303 to extend through the fixing plate 302, so that the mounting plate 304 drives the cutter 305 to move downward along the limit rod 306 until the wall of the cable tube is just cut through. At this time, the rotating motor 205 drives the gear 204 to engage the gear ring 203 to drive the rotating ring 202 to rotate under the support of the rotating frame 201, thereby driving the cutter 305 below it to rotate around the cable tube through the support frame 301, and performing rotational cutting on the circumference of the cable tube wall to avoid excessive cutting depth and heat, which may cause the cable tube to deform due to heat.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shearing device for a PVC cable conduit, comprising a fixing assembly for clamping the cable conduit from both ends, the fixing assembly comprising a bottom plate (101), two lifting frames (102) are symmetrically arranged at the front and rear ends of the bottom plate (101), two lifting plates (103) are symmetrically installed on the lifting frames (102), two clamping plates (104) are symmetrically arranged on the opposite surfaces of the two lifting plates (103), two positive and negative threaded screw rods (105) are symmetrically arranged at both ends of the two lifting plates (103), a synchronous wheel (106) is arranged at the top of the positive and negative threaded screw rod (105), a synchronous belt (107) is installed between the two synchronous wheels (106), and a lifting motor (108) is installed at the bottom of the positive and negative threaded screw rod (105) on one side, characterized in that: It also includes a rotating assembly installed in the middle of the fixed assembly for rotating and cutting the circumference of the cable tube, and the rotating assembly is provided with a cutting assembly for cutting the cable tube and capable of lifting and lowering to adjust the cutting depth; The rotating assembly comprises a rotating frame (201), a rotating ring (202) is rotatably mounted on the rotating frame (201), a gear ring (203) is mounted outside the rotating ring (202), a gear (204) is meshed below the gear ring (203), and a rotating motor (205) is mounted in front of the gear (204); The cutting assembly comprises a support frame (301), a fixing plate (302) is arranged on the top of the support frame (301), an electric push rod (303) is installed on the fixing plate (302), a mounting plate (304) is arranged at the bottom of the electric push rod (303), a cutting machine (305) is installed under the mounting plate (304), and a plurality of limit rods (306) are evenly arranged between the mounting plate (304) and the fixing plate (302).

2. A shearing device for PVC cable conduit according to claim 1, characterized in that: The rotating frame (201) is made of 45# material, and the gear ring (203) is made of 40Cr material.

3. The shearing device for PVC cable conduit according to claim 1, characterized in that: Four limiting rods (306) are provided, and the limiting rods (306) are slidably connected to the fixing plate (302).

4. The shearing device for PVC cable conduit according to claim 1, characterized in that: The clamping surface of the clamping plate (104) is an arc-shaped surface and is provided with a buffer layer.

5. The shearing device for PVC cable conduit according to claim 1, characterized in that: The synchronous wheel (106) is connected to the forward and reverse threaded screw rod (105) by a flat key.

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