Core shaft bar cutting device

Abstract

The utility model provides a mandrel bar cutting device which comprises a rack, and a cutting mechanism and a pressing mechanism are arranged on the rack. The pressing mechanism comprises a fixed pressing block, a movable pressing block and a first driving motor, and the movable pressing block is horizontally arranged on the rack in a sliding fit mode; v-shaped material containing grooves are formed in the top of the fixed pressing block and the top of the movable pressing block, pressing plates are arranged at the upper ends of the material containing grooves, and material pressing areas allowing bars to penetrate through are formed between the pressing plates and the material containing grooves. A gap is formed between the fixed pressing block and the movable pressing block, a cutting area is formed between the fixed pressing block and the movable pressing block, and a liquid spraying valve facing the cutting area is arranged on the pressing plate; the cutting mechanism comprises a lifting seat and a saw blade arranged on the lifting seat, and the saw blade is perpendicular to the pressing area and located over the cutting area. The mandrel bar cutting device is compact in structure, low in production cost, high in cutting efficiency, good in cutting effect and suitable for automatic batch cutting.

Description

Technical Field

[0001] The utility model relates to a cutting device, in particular to a core shaft bar cutting device. Background Art

[0002] Regarding precision products such as shaft cores, due to the high precision requirements of the final product, the accuracy of product parts needs to be controlled during the process, especially the shaft core, which is the main component that directly affects the accuracy of the entire product.

[0003] During production, the rods need to be cut first, and then the cut rods are machined to form a mandrel. The existing cutting device is large in size, high in cost, and inconvenient to use and operate. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a mandrel bar material cutting device which has compact structure, small volume, convenient use and good cutting effect.

[0005] The utility model provides a mandrel bar cutting device, which comprises a frame 1, on which a cutting mechanism 3 and a pressing mechanism 4 are arranged;

[0006] The pressing mechanism 4 includes a fixed pressure block 41, a dynamic pressure block 42 and a first driving motor 45, wherein the fixed pressure block 41 is fixed on the frame 1, and the dynamic pressure block 42 is horizontally slidably mounted on the frame 1, and a first screw 44 is provided at the output end of the first driving motor 45, and the first screw 44 is threadedly connected with the dynamic pressure block 42 and is used to drive the dynamic pressure block to move; the tops of the fixed pressure block 41 and the dynamic pressure block 42 are both provided with a V-shaped material placement groove, and a pressing plate is provided at the upper end of the material placement groove, and a pressing area for accommodating rods to pass through is formed between the pressing plate and the material placement groove; there is a gap between the fixed pressure block 41 and the dynamic pressure block 42 to form a cutting area, and a liquid spray valve facing the cutting area is provided on the pressing plate;

[0007] The cutting mechanism 3 includes a lifting seat 35 and a saw blade 37 disposed on the lifting seat 35 . The saw blade 37 is perpendicular to the pressing area and is located directly above the cutting area.

[0008] Furthermore, the cutting mechanism 3 also includes a first mounting seat 31, a vertical guide rail 32 is provided on the first mounting seat 31, a first slide 33 is vertically slidably provided on the vertical guide rail 32, a lifting cylinder 34 is provided on the top of the first mounting seat 31, the output shaft of the lifting cylinder is connected to the first slide 33 and is used to drive its lifting, a mounting seat is provided on the first slide 33 to form a lifting seat, and a cutting motor 36 is provided on the lifting seat to drive the saw blade 37 to rotate.

[0009] Furthermore, a transparent protective cover is provided outside the cutting area to prevent splashing of the coolant.

[0010] Furthermore, a mounting hole facing the cutting area is formed on the side wall of the pressing plate, the axis of the mounting hole is parallel to the axis of the material placement area, and the liquid spray valve is installed in the mounting hole.

[0011] Furthermore, the liquid spray valve includes a valve body 53, a main valve core 51 and an auxiliary valve core 52, both ends of the valve body 53 are penetrated by stepped holes to form a valve core hole, the main valve core 51 and the auxiliary valve core 52 are installed in the valve core hole, and the auxiliary valve core 52 is located at the front end of the main valve core; both ends of the main valve core 51 are penetrated by flow channels, the flow channels include a first flow channel 510, a second flow channel 511 and a third flow channel 512 which are coaxially arranged and connected in sequence, the aperture of the second flow channel is smaller than the apertures of the first flow channel and the second flow channel, the side wall of the main valve core is provided with a first air channel 501 connected to the second flow channel, the side wall of the valve body is provided with a second air channel 530 connected to the first air channel, a chamber 520 connected to the first flow channel is formed in the auxiliary valve core, the inner diameter of the chamber is larger than the inner diameter of the first flow channel 510, and a liquid spray port 521 is provided at the front end of the chamber 520.

[0012] Furthermore, the chamber 520 is a V-shaped structure with a small front end and a large rear end.

[0013] Furthermore, the side walls of the first flow channel and the third flow channel are inclined surfaces and form a tapered hole.

[0014] Furthermore, there is a gap between the outer wall of the main valve core and the inner wall of the valve core hole to form an annular air cavity, the first air channel 501 and the second air channel 530 are connected to the air cavity, the first air channel 501 is multiple and evenly distributed circumferentially, and a third air channel connected to the second air channel is opened on the pressure plate.

[0015] Furthermore, the outer wall of the valve body 53 is provided with a dustproof net 55 capable of covering the second air duct.

[0016] Furthermore, the aperture of the liquid spraying port is 1 mm-3 mm.

[0017] The advantages of the utility model are: the mandrel bar cutting device of the utility model is provided with a material pressing mechanism, which can avoid the bar from jumping and improve the cutting reliability and stability; the material guiding mechanism is provided, which can press and fix the bar to ensure the cutting accuracy and reliability, and can realize automatic material guiding and feeding at the same time, with a high degree of automation, which greatly reduces the labor intensity of workers and has high work efficiency; the built-in spray valve can cool the saw blade, has a compact structure and a good cooling effect; the structure of the spray valve is optimized to produce atomized spray, with a large spray area and a good cooling effect, which greatly reduces the use of coolant and is energy-saving and environmentally friendly; the mandrel bar cutting device of the utility model has a compact structure, low production cost, high cutting efficiency and good effect, and is suitable for automated batch cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the mandrel bar cutting device of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the mandrel bar cutting device of the utility model from another angle;

[0020] Figure 3 It is a structural schematic diagram of the material guide mechanism of the mandrel bar cutting device of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the cutting mechanism of the mandrel bar cutting device of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the material pressing mechanism of the mandrel bar cutting device of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the liquid spray valve of the mandrel rod cutting device of the utility model. DETAILED DESCRIPTION

[0024] The following is a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings.

[0025] See also Figure 1-Figure 6 The utility model provides a core shaft bar cutting device, which comprises a frame 1, on which a cutting mechanism 3 and a pressing mechanism 4 are arranged.

[0026] The frame 1 is used as a support and mounting carrier for mounting a cutting mechanism 3 and a pressing mechanism 4. The frame 1 includes legs and a workbench arranged on the legs. The workbench is a horizontally arranged plate structure made of metal. A plurality of mounting holes are provided on the workbench for mounting the cutting mechanism and the pressing mechanism.

[0027] The pressing mechanism 4 is used for pressing, that is, for pressing the rod to be cut to prevent rolling or sliding. It includes a fixed pressure block 41, a dynamic pressure block 42 and a first driving motor 45. The fixed pressure block 41 is fixed on the frame 1, and the dynamic pressure block 42 is horizontally slidably mounted on the frame 1. Specifically, a horizontal guide rod 43 is provided on the frame 1. There are at least two horizontal guide rods and they are arranged in parallel. One end of the horizontal guide rod is fixedly connected to the fixed pressure block, and the other end is fixedly connected to the support on the frame 1. The dynamic pressure block 42 is slidably mounted on the horizontal guide rod 43. A material placing groove 421 is provided on the top of the fixed pressure block 41 and the dynamic pressure block 42. The two material placing grooves 421 are coaxially arranged. A pressure plate 422 is provided at the end. Specifically, the pressure plate 422 is a rectangular structure, and its two ends are fixed to the two ends of the fixed pressure block or the dynamic pressure block by bolts. A pressing area is formed between the lower end of the pressure plate 422 and the feeding groove, and the pressing area can accommodate rods to pass through. According to rods of different diameters, the bolts at both ends of the pressure plate 422 are adjusted to adjust the distance between the pressure plate 422 and the feeding groove, that is, the height of the pressing area is adjusted. The pressing areas on the fixed pressure block and the dynamic pressure block are coaxial, and there is a gap between the fixed pressure block 41 and the dynamic pressure block 42 to form a cutting area for accommodating a saw blade to cut. In this embodiment, a liquid spray valve is provided on the pressure plate 422, and the liquid spray valve faces the cutting area to cool the saw blade.

[0028] In order to facilitate the discharge of materials, a discharge groove 46 is fixed on the side wall of the dynamic pressure block. The discharge groove 46 is inclined to allow the cut rods to be discharged to achieve the discharge of materials.

[0029] The first drive motor 45 is horizontally fixed on the frame 1. The output end of the first drive motor 45 is provided with a first screw 44. The first screw 44 is threadedly connected to the dynamic pressure block 42 and is used to drive the dynamic pressure block to move horizontally to achieve width adjustment of the cutting area.

[0030] The cutting mechanism 3 includes a lifting seat 35 and a saw blade 37 disposed on the lifting seat 35. The lifting seat can be lifted and lowered. The saw blade 37 is perpendicular to the pressing area and is located directly above the cutting area. The lifting and lowering of the lifting seat drives the saw blade to lift and lower to achieve cutting. For details, see Figure 4The cutting mechanism 3 also includes a first mounting seat 31, on which a vertical guide rail 32 is provided, and the vertical guide rail is perpendicular to the axis of the pressing area. In this embodiment, its vertical horizontal plane is vertically slidably equipped with a first slide seat 33 on the vertical guide rail 32. At the same time, a lifting cylinder 34 is provided on the top of the first mounting seat 31, and the lifting cylinder is vertically arranged. The output shaft of the lifting cylinder is connected to the first slide seat 33, which is used to drive the first slide seat to move up and down to achieve lifting. A mounting seat is provided on the first slide seat 33 to form a lifting seat. The saw blade 37 is rotatably mounted on the mounting seat (lifting seat) through the main shaft. At the same time, a cutting motor 36 is provided on the lifting seat. In this embodiment, the cutting motor 36 is mounted on the top of the lifting seat and is vertically arranged. Its output end is connected to the main shaft through a gear, and then used to drive the saw blade 37 to rotate to achieve cutting.

[0031] In this embodiment, a material guiding mechanism 2 is also included, which is installed on the frame 1 and is located at the front end of the material pressing mechanism 4. Figure 1-Figure 3 The material guiding mechanism 2 includes a rectangular support seat, which is fixed on the support as a mounting carrier. A horizontal slide rail 21 is provided on the support seat, and a horizontal slide seat 22 is slidably provided on the horizontal slide rail 21. The sliding direction of the horizontal slide seat is parallel to the axis of the pressing area. A pressing device is provided on the horizontal slide seat 22. The pressing device includes a pressing seat 26. The pressing seat 26 is a frame-shaped structure. A material placing seat 27 is provided at the lower end of the pressing seat 26. A V-shaped material placing groove is also provided on the material placing seat 27. The material placing groove is coaxial with the material placing grooves on the fixed pressure block and the dynamic pressure block and is flush with each other. At the same time, a pressing block 28 is vertically slidably provided at the upper end of the pressing seat 26 through a guide rod 281. The pressing block is located directly above the material placing seat 27, and a clamping cylinder is fixed on the top of the pressing seat. 29, which is vertically arranged, and the output end is connected to the pressing block, which can press the rod on the material placement seat to fix the rod, so as to facilitate the cutting operation; an adjusting motor 24 is installed at the end of the bracket seat, and an adjusting screw 23 is provided at the output end of the adjusting motor, which is threadedly connected to the horizontal slide seat and can drive the horizontal slide seat to slide horizontally to realize automatic feeding; a guide wheel 25 is provided at the upper end of the front end (feeding end) of the bracket seat, and the side wall of the guide wheel is an inwardly concave arc surface, which can limit the position of the rod, and the top surface of the guide wheel is used as a supporting surface to support and guide the rod. The pressing device can realize automatic feeding of the rod (drive the rod to move after pressing), and at the same time, it can realize the pressing of the rod during cutting, thereby improving the cutting reliability and stability.

[0032] The following is a description of the liquid injection valve;

[0033] A mounting hole is provided on the side wall of the pressing plate, the opening end of the mounting hole faces the cutting area, and the axis thereof is parallel to the axis of the material placing area, and the liquid spray valve is installed in the mounting hole; Figure 6The liquid injection valve includes a valve body 53, a main valve core 51 and an auxiliary valve core 52. Stepped holes are passed through both ends of the valve body 53 to form a valve core hole. The main valve core 51 and the auxiliary valve core 52 are installed in the valve core hole, and the auxiliary valve core 52 is located at the front end (liquid outlet end) of the main valve core; a flow channel is passed through both ends of the main valve core 51. Specifically, the flow channel includes a first flow channel 510, a second flow channel 511 and a third flow channel 512 which are coaxially arranged and connected in sequence, wherein the aperture of the second flow channel is smaller than the apertures of the first flow channel and the second flow channel. In this embodiment, the side walls of the first flow channel and the third flow channel are inclined surfaces to form a tapered hole, so The flow channel forms a trumpet-shaped structure with large ends and a small middle. A liquid inlet hole 4220 is provided at the end of the mounting hole, which is connected to the flow channel for liquid inlet. The aperture of the liquid inlet hole is the same as the aperture of the third flow channel. A first air channel 501 is provided on the side wall of the main valve core, and the first air channel 501 is connected to the second flow channel. At the same time, a second air channel 530 is provided on the side wall of the valve body, and the second air channel 530 is connected to the first air channel for allowing air to enter. In the present application, there is a gap between the outer wall of the main valve core and the inner wall of the valve core hole to form an annular air cavity. The first air channel 501 is connected to the second air channel 530. In order to increase the air intake, the air cavity has multiple first air channels 501 that are evenly distributed circumferentially, and a third air channel is opened on the pressure plate, which is connected to the second air channel. Specifically, it is connected to the annular air cavity to increase the air intake and uniformity. A chamber 520 is formed in the auxiliary valve core, and the chamber 520 is connected to the chamber 520 of the first flow channel. It is coaxially arranged with the flow channel, and the inner diameter of the chamber is larger than the inner diameter of the first flow channel 510. The chamber is a horizontally arranged cylindrical structure with a narrowed end to form a V-shaped structure with a small front end and a large rear end. A liquid spray port 521 is provided at the front end of the chamber 520 for cooling the liquid. Liquid spray, the aperture of the liquid spray port is 1mm-3mm. When the coolant enters the flow channel at high speed, negative pressure can be generated and air can be brought in, so that the coolant is sprayed onto the saw blade in the form of atomization, thereby cooling the saw blade. It has good cooling effect, greatly reduces the amount of coolant used, and has low power consumption and cost. In order to prevent dust or other impurities from entering, a dustproof net 55 is provided on the outer wall of the valve body 53, and the dustproof net 55 can cover the second air channel to achieve dust prevention. In this embodiment, a locking ring 54 is threadedly installed at the end of the mounting hole, and the locking ring 54 presses the liquid spray valve to achieve fixed installation of the liquid spray valve.

[0034] In this application, a transparent protective cover is provided outside the cutting area to prevent splashing of coolant and improve the workshop working environment.

[0035] The mandrel bar cutting device of the utility model is provided with a material pressing mechanism, which can avoid the bar from jumping and improve the cutting reliability and stability; the material guiding mechanism is provided, which can press and fix the bar to ensure the cutting accuracy and reliability, and can realize automatic material guiding and feeding at the same time, with a high degree of automation, which greatly reduces the labor intensity of workers and has high work efficiency; the built-in spray valve can cool the saw blade, has a compact structure and a good cooling effect; the structure of the spray valve is optimized to produce atomized spray, with a large spray area and a good cooling effect, which greatly reduces the use of coolant and is energy-saving and environmentally friendly; the mandrel bar cutting device of the utility model has a compact structure, low production cost, high cutting efficiency and good effect, and is suitable for automatic batch cutting.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A mandrel bar cutting device, characterized in that: It comprises a frame, on which a cutting mechanism and a pressing mechanism are provided; The material pressing mechanism comprises a fixed pressure block, a dynamic pressure block and a first driving motor, wherein the fixed pressure block is fixed on the frame, the dynamic pressure block is horizontally slidably mounted on the frame, and a first screw is provided at the output end of the first driving motor, the first screw is threadedly connected to the dynamic pressure block and is used to drive the dynamic pressure block to move; the tops of the fixed pressure block and the dynamic pressure block are both provided with a V-shaped material placing groove, the upper ends of the material placing grooves are provided with a pressing plate, and a material pressing area for accommodating the passage of rods is formed between the pressing plate and the material placing groove; a gap is provided between the fixed pressure block and the dynamic pressure block to form a cutting area, and a liquid spray valve facing the cutting area is provided on the pressing plate; The cutting mechanism comprises a lifting seat and a saw blade arranged on the lifting seat, wherein the saw blade is perpendicular to the material pressing area and is located directly above the cutting area.

2. The mandrel bar cutting device according to claim 1, characterized in that: The cutting mechanism also includes a first mounting seat, a vertical guide rail is provided on the first mounting seat, a first slide is vertically slidably provided on the vertical guide rail, a lifting cylinder is provided on the top of the first mounting seat, the output shaft of the lifting cylinder is connected to the first slide and is used to drive it to rise and fall, a mounting seat is provided on the first slide to form a lifting seat, and a cutting motor is provided on the lifting seat to drive the saw blade to rotate.

3. The mandrel bar cutting device according to claim 1, characterized in that: A transparent protective cover is arranged outside the cutting area to prevent splashing of the cooling liquid.

4. The mandrel bar cutting device according to claim 1, characterized in that: A mounting hole facing the cutting area is formed on the side wall of the pressing plate, the axis of the mounting hole is parallel to the axis of the material placing groove, and the liquid spray valve is mounted in the mounting hole.

5. The mandrel bar cutting device according to claim 4, characterized in that: The liquid spray valve includes a valve body, a main valve core and a sub-valve core, both ends of the valve body are penetrated by stepped holes to form a valve core hole, the main valve core and the sub-valve core are installed in the valve core hole, and the sub-valve core is located at the front end of the main valve core; both ends of the main valve core are penetrated by flow channels, the flow channels include a first flow channel, a second flow channel and a third flow channel which are coaxially arranged and connected in sequence, the aperture of the second flow channel is smaller than the apertures of the first flow channel and the second flow channel, the side wall of the main valve core is provided with a first air channel connected to the second flow channel, the side wall of the valve body is provided with a second air channel connected to the first air channel, a chamber connected to the first flow channel is formed in the sub-valve core, the inner diameter of the chamber is larger than the inner diameter of the first flow channel, and a liquid spray port is provided at the front end of the chamber.

6. The mandrel bar cutting device according to claim 5, characterized in that: The side walls of the first flow channel and the third flow channel are inclined surfaces and form a tapered hole.

7. The mandrel bar cutting device according to claim 5, characterized in that: There is a gap between the outer wall of the main valve core and the inner wall of the valve core hole to form an annular air cavity. The first air channel and the second air channel are connected to the air cavity. There are multiple first air channels and they are evenly distributed circumferentially. The pressure plate is provided with a third air channel connected to the second air channel.

8. The mandrel bar cutting device according to claim 5, characterized in that: The outer wall of the valve body is provided with a dustproof net capable of covering the second air passage.

9. The mandrel bar cutting device according to claim 5, characterized in that: The aperture of the liquid spraying port is 1mm-3mm.

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