Fixed cutting device for processing rigid polyvinyl chloride cable pipe

Abstract

The utility model discloses a fixed cutting device for processing a hard polyvinyl chloride cable pipe, which comprises a cutting table, a movable cutting frame is arranged on the cutting table, a lifting electric cutter is arranged on the movable cutting frame, and the fixed cutting device is characterized in that two clamping seats are arranged at the two ends of the top of the cutting table; a clamping part is installed on the clamping base and comprises a U-shaped frame fixed to the top of the clamping base, an electric push rod is installed at the top of the U-shaped frame, a lifting block is installed at the bottom of the electric push rod, corresponding arc grooves are formed in the bottom end of the lifting block and the top of the clamping base, and driving rods are hinged to the two sides of the bottom end of the lifting block; the bottom of the driving rod is hinged to the side wall of the clamping block. By designing the clamping part, the periphery of the pipe can be clamped and limited in four directions through the four arc grooves, the clamping is very stable, the stress is uniform, the arc surface clamping has better protection performance on the pipe, and the defect that a V-shaped groove is used for clamping in the prior art is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of cable pipe processing design, in particular to a fixed cutting device for processing rigid polyvinyl chloride cable pipes. Background Technique

[0002] Rigid polyvinyl chloride cable pipes (PVC pipes) are a commonly used type of wire conduits, mainly used for the protection of wires and cables. They have high hardness, stiffness and allowable stress, good anti-aging ability, are durable, and can have a service life of up to 50 years.

[0003] Currently, in some special terrains, such as at corners, turns or equipment interfaces, the PVC pipes may need to be precisely cut into a section with a suitable length to ensure smooth installation. Or when the PVC pipe is damaged or needs to be replaced, the damaged part may need to be cut off and replaced with a new small section of PVC pipe. The lengths of the pipes required for such needs are mostly not too long, and can be cut and processed by medium and small-sized cutting machines. And effective clamping and fixing are required during cutting.

[0004] After retrieval, most of the clamps for cable pipe processing on the market adopt a V-groove design. For example, the application number 202220629579.8 discloses a quantitative cutting device for PVC cable protection pipes, which uses this clamping method. This kind of clamp is relatively simple and general, and is relatively convenient to use, ensuring that the pipe will not shake or slide at a fixed position. However, after actual investigation, it is found that this clamping method has certain deficiencies. Due to the small contact area, the V-groove clamping method may cause stress concentration on the pipe, and most of the clamping surfaces have anti-slip patterns. When clamped too tightly, it may cause certain damage to the pipe, and improper operation may even cause rupture, cracks, etc. And the cutting devices in the prior art for pipe materials.

[0005] Therefore, the applicant proposes a fixed cutting device for processing rigid polyvinyl chloride cable pipes to solve the problem. Content of the Utility Model

[0006] The utility model provides a fixed cutting device for processing rigid polyvinyl chloride cable pipes, which solves the problems raised in the above background.

[0007] To solve the above technical problems, a fixed cutting device for processing rigid polyvinyl chloride cable pipes provided by the utility model includes a cutting table, a moving cutting frame is installed on the cutting table, and a lifting electric cutter is installed on the moving cutting frame. It is characterized in that: two clamping seats are installed at both ends of the top of the cutting table, a clamping part is installed on the clamping seat, the clamping part includes a U-shaped frame fixed on the top of the clamping seat, an electric push rod is installed on the top of the U-shaped frame, a lifting block is installed at the bottom of the electric push rod, arc grooves corresponding to each other are provided between the bottom end of the lifting block and the top of the clamping seat, driving rods are hinged on both sides of the bottom end of the lifting block, the bottom of the driving rod is hinged on the side wall of the clamping block, arc grooves are provided on the inner sides of the two clamping blocks and are slidably connected to the top of the clamping seat.

[0008] Preferably, the bottom of the clamping block is butt-connected with a slider through two connecting pieces, the slider slides in the inner slideway of the clamping seat, and the connecting piece slides in the opening between the slideway and the clamping seat, and a return spring is connected between the slider and the inner wall of the slideway.

[0009] Preferably, there is a certain distance between the bottom of the clamping block and the clamping seat, and when the two clamping blocks are in the clamping state, there is still a certain distance between their tops and the lifting block.

[0010] Preferably, the convex blocks on both sides of the lifting block slide in the openings on both sides of the U-shaped frame, and buffer springs are connected between the top of the lifting block and the inner bottom end of the U-shaped frame.

[0011] Preferably, "L"-shaped angle iron blocks are nailed on both sides of the clamping seat, and the angle iron blocks are fixedly connected to the cutting table by screws, and screw holes for docking with the angle iron blocks are arranged on both sides of the top of the cutting table.

[0012] Preferably, a cross plate is fixed inside the cutting frame, and cutting end support parts are fixed on both sides of the cross plate, including steel plates fixed on both sides of the cross plate, and arc-shaped support plates for support are installed at the top of one end of the steel plates, and the support surfaces of the arc-shaped support plates are at the same height as the support surfaces of the arc grooves at the top of the clamping seat.

[0013] Preferably, a stainless steel sleeve is fixed at the bottom of the arc-shaped support plate, and the stainless steel sleeve is sleeved outside the steel plate and is fixedly connected by screws.

[0014] Compared with the related art, a fixed cutting device for processing rigid polyvinyl chloride cable pipes provided by the utility model has the following beneficial effects:

[0015] By designing the clamping part, the utility model can perform clamping and limiting on the outer circumference of the pipe in four directions through four arc grooves, the clamping is very stable, the stress is uniform, and the arc surface clamping has better protection performance for the pipe, effectively solving the deficiencies of using V-shaped grooves for clamping in the prior art.

[0016] The utility model designs a cutting end support part. Before placing the pipe, two stainless steel sleeves are sleeved outside the steel plate and fixed. Then, after the pipe is placed, the pipe will also rest on the arc-shaped support plate, which is located on both sides of the lifting electric cutter. When cutting, the arc-shaped support plate supports both ends of the cutting point, avoiding the situation that the pipe cracks due to the two ends of the cutting being suspended in the air, and enhancing the cutting stability. Brief Description of the Drawings

[0017] Figure 1 is a schematic three-dimensional structure diagram of the whole of the utility model Figure 1 ;

[0018] Figure 2 is a schematic three-dimensional structure diagram of the whole of the utility model Figure 2 ;

[0019] Figure 3 is a schematic three-dimensional structure diagram of the whole of the utility model Figure 3 and the clamping seat is not installed;

[0020] Figure 4 is a schematic three-dimensional structure diagram of the clamping part and the clamping seat of the utility model, and the clamping seat is in a sectional view state;

[0021] Figure 5 is a schematic three-dimensional structure diagram of the clamping part of the utility model.

[0022] Reference numerals in the figure: 1, cutting table; 2, moving cutting frame; 3, lowering electric cutter; 4, clamping seat; 5, clamping part; 51, U-shaped frame; 52, electric push rod; 53, lifting block; 54, driving rod; 55, clamping block; 57, slider; 58, return spring; 6, support part; 61, steel plate; 62, stainless steel sleeve; 63, arc-shaped support plate; 7, angle iron block. Specific Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] By Figures 1 - 5Provided hereby, the present utility model provides a fixed cutting device for processing rigid polyvinyl chloride cable pipes, including a cutting table 1, on which a movable cutting frame 2 is installed. An elevating electric cutter 3 is installed on the movable cutting frame 2. Two clamping seats 4 are installed at both ends of the top of the cutting table 1. A clamping part 5 is installed on the clamping seat 4. The clamping part 5 includes a U-shaped frame 51 fixed to the top of the clamping seat 4. An electric push rod 52 is installed on the top of the U-shaped frame 51. A lifting block 53 is installed at the bottom of the electric push rod 52. Corresponding arc grooves are provided between the bottom end of the lifting block 53 and the top of the clamping seat 4. Driving rods 54 are hinged to both sides of the bottom end of the lifting block 53. The bottom ends of the driving rods 54 are hinged to the side walls of the clamping blocks 55. Arc grooves are provided on the inner sides of the two clamping blocks 55 and are slidably connected to the top of the clamping seat 4.

[0025] By designing the clamping part 5, during the cutting operation, the movable cutting frame 2 is moved to a suitable position according to requirements. Then, the rigid polyvinyl chloride cable pipe is passed through the U-shaped frames 51 on the two clamping seats 4. At this time, the rigid polyvinyl chloride cable pipe is directly below the elevating electric cutter 3, and at the same time, the rigid polyvinyl chloride cable pipe is located in the arc grooves at the top of the clamping seat 4. Then, the two electric push rods 52 are started synchronously. The lifting block 53 descends and presses the rigid polyvinyl chloride cable pipe through the arc groove at its bottom. At the same time, the driving rod 54 rotates when the lifting block 53 descends and pushes the two clamping blocks 55. When the lifting block 53 presses the pipe, the two clamping blocks 55 just fit together through the arc grooves to clamp both sides of the pipe. In this way, the outer circumference of the pipe is clamped and limited in four directions. The clamping is very stable, and the stress is uniform. The arc-shaped clamping has a better protection performance for the pipe. Then, start the elevating electric cutter 3 to descend for cutting. It should be noted that the elevating electric cutter 3 and the movable cutting frame 2 are both existing designs and have been proposed in the comparative literature. Therefore, their detailed principles will not be elaborated in this article.

[0026] The bottom of the clamping block 55 is butt-connected with a slider 57 through two connecting pieces. The slider 57 slides in the inner slideway of the clamping seat 4, and the connecting piece slides in the opening between the slideway and the clamping seat 4. A return spring 58 is connected between the slider 57 and the inner wall of the slideway. There is a certain distance between the bottom of the clamping block 55 and the clamping seat 4. When the two clamping blocks 55 are in the clamping state, there is still a certain distance between their tops and the lifting block 53. The convex blocks on both sides of the lifting block 53 slide in the openings on both sides of the U-shaped frame 51, and a buffer spring 56 is connected between the top of the lifting block 53 and the inner bottom end of the U-shaped frame 51.

[0027] As described above, in the optimized design of the clamping part 5, when in contact clamping, the lifting block 53 rises, and the driving rod 54 pulls the clamping block 55. Since the force is obliquely upward, there will be a certain resistance. When the clamping block 55 clamps, the return spring 58 is in a stretched state in design. Then when the clamping is released, the return spring 58 can pull the clamping block 55 back to its original position, making the reset more smooth and stable. There is a gap between the upper and lower surfaces of the clamping block 55, which can reduce the resistance with the clamping seat 4 and avoid extrusion with the lifting block 53 during clamping. Finally, the buffer spring 56 can play a certain buffering effect to avoid a large collision force when contacting the pipe material and play a protective role.

[0028] Angle iron blocks 7 in an "L" shape are nailed to both sides of the clamping seat 4, and the angle iron blocks 7 are fixedly connected to the cutting table 1 by screws. And screw holes for docking with the angle iron blocks 7 are arranged and distributed on both sides of the top of the cutting table 1.

[0029] As described above, the clamping seat 4 can be stably installed through the angle iron blocks 7. At the same time, the angle iron blocks 7 can be docked with appropriate screw holes, and then the distance between the two clamping seats 4 can be adjusted, and then cable pipes of different specifications and lengths can be cut and processed, improving the applicability.

[0030] A cross plate 8 is fixed inside the cutting frame 2. Cutting end support parts 6 are fixed on both sides of the cross plate 8, including steel plates 61 fixed on both sides of the cross plate 8. An arc-shaped support plate 63 for support is installed at the top near one end of the steel plate 61. The support surface of the arc-shaped support plate 63 is at the same height as the support surface of the arc groove at the top of the clamping seat 4. A stainless steel sleeve 62 is fixed at the bottom of the arc-shaped support plate 63. The stainless steel sleeve 62 is sleeved outside the steel plate 61 and fixedly connected by screws.

[0031] As described above, by designing the cutting end support part 6, before placing the pipe material, the two stainless steel sleeves 62 are sleeved outside the steel plate 61 and fixed. Then after the pipe material is placed well, the pipe material will also rest on the arc-shaped support plate 63. The arc-shaped support plate 63 is located on both sides of the lifting electric cutter 3. Then during cutting, the arc-shaped support plate 63 supports both ends of the cutting point, avoiding the situation that the pipe material cracks due to the two ends of the cutting being suspended in the air, enhancing the cutting stability. It should be noted that the blade in the lifting electric cutter 3 is closer to one side of the arc-shaped support plate 63 due to being connected to the motor, but their positions are staggered and will not touch each other.

[0032] Working principle: During operation, move the movable cutting frame 2 to a suitable position according to requirements. Then, put two stainless steel sleeves 62 outside the steel plate 61 and fix them. Install the arc-shaped support plate 63. At this time, two workers stand on the sides of the two clamping seats 4 respectively. One worker picks up the rigid polyvinyl chloride cable pipe, passes it through the U-shaped frame 51 on one clamping seat 4, and slides on the arc-shaped groove of the clamping seat 4. When reaching the first arc-shaped support plate 63, slightly lift the head end and then place it on the arc-shaped support plate 63 and push it to slide. When the pipe head passes through the movable cutting frame 2, the other worker holds the pipe head at the other end and coordinates the movement. Finally, the pipe is placed on the two clamping seats 4 and the arc-shaped support plate 63. Then, start two electric push rods 52 simultaneously, and the lifting block 53 descends. At the same time, the driving rod 54 rotates while the lifting block 53 descends, and pushes the two clamping blocks 55. When the lifting block 53 presses on the pipe, the two clamping blocks 55 just fit and clamp both sides of the pipe through the arc-shaped groove. After that, start the lifting electric cutter 3 to descend for cutting. After cutting is completed, release the fixation, and pull out the pipe divided into two sections. It should be noted that in this case, the equipment is suitable for cutting small sections of pipes, and the weight of the PVC pipes is moderate, and manual handling can be used for loading and unloading.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed cutting device for processing rigid polyvinyl chloride cable pipes, comprising a cutting table (1), a movable cutting frame (2) is installed on the cutting table (1), and a lifting electric cutter (3) is installed on the movable cutting frame (2), characterized in that: At both ends of the top of the cutting table (1), two clamping seats (4) are installed, and a clamping part (5) is installed on the clamping seat (4); The clamping part (5) includes a U-shaped frame (51) fixed to the top of the clamping seat (4). An electric push rod (52) is installed on the top of the U-shaped frame (51). A lifting block (53) is installed at the bottom of the electric push rod (52). Corresponding arc grooves are provided between the bottom end of the lifting block (53) and the top of the clamping seat (4). Driving rods (54) are hinged to both sides of the bottom end of the lifting block (53). The bottom of the driving rod (54) is hinged to the side wall of the clamping block (55). Arc grooves are provided on the inner sides of the two clamping blocks (55) and are slidably connected to the top of the clamping seat (4).

2. The fixed cutting device for processing rigid polyvinyl chloride cable pipes according to claim 1, characterized in that, The bottom of the clamping block (55) is butt-connected with a slider (57) through two connecting pieces. The slider (57) slides in the inner slideway of the clamping seat (4), and the connecting piece slides in the opening between the slideway and the clamping seat (4). A return spring (58) is connected between the slider (57) and the inner wall of the slideway.

3. The fixed cutting device for processing rigid polyvinyl chloride cable pipes according to claim 2, wherein, There is a certain distance between the bottom of the clamping block (55) and the clamping seat (4), and there is still a certain distance between the top of the two clamping blocks (55) and the lifting block (53) when they are in the clamping state.

4. The fixed cutting device for processing rigid polyvinyl chloride cable pipes according to claim 3, wherein The convex blocks on both sides of the lifting block (53) slide in the openings on both sides of the U-shaped frame (51), and a buffer spring (56) is connected between the top of the lifting block (53) and the inner bottom end of the U-shaped frame (51).

5. A fixed cutting device for processing rigid polyvinyl chloride cable pipes according to claim 1, characterized in that, Angle iron blocks (7) in an "L" shape are nailed to both sides of the clamping seat (4), and the angle iron blocks (7) are fixedly connected to the cutting table (1) by screws. Screw holes for docking with the angle iron blocks (7) are arranged and distributed on both sides of the top of the cutting table (1) on both sides of the clamping seat (4).

6. The fixed cutting device for processing rigid polyvinyl chloride cable pipes according to claim 1, wherein, A cross plate (8) is fixed inside the cutting frame (2). Cutting end support parts (6) are fixed on both sides of the cross plate (8), including steel plates (61) fixed on both sides of the cross plate (8). An arc-shaped support plate (63) for support is installed at the top of the steel plate (61) near one end. The support surface of the arc-shaped support plate (63) is at the same height as the support surface of the arc groove at the top of the clamping seat (4).

7. The fixed cutting device for processing rigid polyvinyl chloride cable pipes according to claim 6, characterized in that, A stainless steel sleeve (62) is fixed to the bottom of the arc-shaped support plate (63). The stainless steel sleeve (62) is sleeved outside the steel plate (61) and is fixedly connected by screws.

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