Automatic knife sharpening structure of polyethylene particle granulator

Abstract

The automatic knife sharpening structure comprises a lower support, the upper surface of the lower support is of a hollow circular-truncated-cone-shaped structure with an opening, the upper surface of the lower support is rotationally connected with an upper support, the upper support is of a circular-truncated-cone-shaped structure, a supporting rod is arranged on the surface of the upper support in a penetrating mode, and the supporting rod is connected with the lower support in a rotating mode. The supporting rods are slidably connected with the surface of the upper support, the number of the supporting rods is two, and the two supporting rods are symmetrically arranged and connected to the lower surface of the same grinding wheel. According to the automatic knife sharpening structure of the polyethylene particle granulator, the grinding wheel is installed in the granulator shell, the height of the grinding wheel is adjusted through driving of the electric push rod, and the grinding wheel with the variable height can be close to a granulator cutting knife in the granulator shell, so that the grinding wheel is used for automatically grinding the surface of the granulator cutting knife; and the cutting efficiency of the granulator cutter is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyethylene pellet cutting machine technical field, concretely is a kind of automatic knife grinding structure of polyethylene pellet cutting machine. BACKGROUND

[0002] Polyethylene pellet cutting machine is a kind of equipment for processing polyethylene raw materials into granular, polyethylene is made into uniform size granules by pellet cutting machine, to facilitate the storage, transportation and subsequent processing of polyethylene, cutting tool is used to cut the extruded long strip polyethylene raw material during the working process of pellet cutting machine, in order to ensure the sharpness of cutting tool, the cutting tool in pellet cutting machine needs to be regularly sharpened.

[0003] At present, during the sharpening process of polyethylene pellet cutting machine, the cutting tool needs to be disassembled from the pellet cutting machine, and the disassembled cutting tool is sharpened by using a grinding wheel mechanism, but the process of disassembling the cutting tool is time-consuming and laborious, and if the grinding wheel is installed separately inside the pellet cutting machine, it will affect the discharging process of polyethylene particles and the working efficiency of the pellet cutting machine. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of automatic knife grinding structure of polyethylene pellet cutting machine, the device is provided with movable grinding wheel inside pellet cutting machine to sharpen cutting tool, to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of automatic knife grinding structure of polyethylene pellet cutting machine, including lower support, the lower support is the upper surface open hollow circular truncated cone structure, the upper surface of the lower support is rotatably connected with upper support, the upper support is circular truncated cone structure, the surface of the upper support is penetrated and is provided with support rod, the surface of the support rod and upper support is slidably connected, the support rod is symmetrically provided with 2, 2 the support rod is connected in the lower surface of same grinding wheel, the inside of the lower support is provided with lifting structure, lifting structure can adjust the height of grinding wheel to make grinding wheel close to pellet cutting machine cutting knife and sharpen.

[0006] Preferably, the lifting structure includes a supporting plate, the supporting plate is a circular ring plate structure, the upper surface of the supporting plate is fixedly connected with the lower surface of the support rod, the lower surface of the supporting plate is rotatably connected with the upper surface of the connecting plate, the connecting plate is a circular ring plate structure, the lower surface of the connecting plate is fixedly connected with the output end of the electric push rod on one side, the electric push rod is located below the lower support, the other side of the lower surface of the connecting plate is provided with a telescopic rod, the telescopic rod penetrates the lower surface of the lower support, and the telescopic rod and the output end of the electric push rod are symmetrically arranged.

[0007] Adopting the technical scheme, the height of the grinding wheel can be adjusted by the lifting structure to approach the cutting knife of the pelletizer for grinding.

[0008] Preferably, the surface of the connecting plate is provided with a driving structure, and the driving structure can realize the rotation of the grinding wheel.

[0009] Adopting the technical scheme, the rotation of the grinding wheel can be controlled by the driving structure to polish the cutting knife of the pelletizer.

[0010] Preferably, the driving structure comprises a driving motor, the driving motor is fixedly connected to the outer surface of the connecting plate through a support, the output end of the driving motor is fixedly connected with a gear, the gear is aligned with a bearing plate, the outer surface of the bearing plate is provided with a tooth block structure, and the tooth block on the outer surface of the bearing plate is engaged with the gear.

[0011] Adopting the technical scheme, the rotation of the grinding wheel can be driven by the rotation of the gear controlled by the driving motor.

[0012] Preferably, the lower support is fixedly connected to the inner wall of the pelletizer shell, the bottom surface of the inner wall of the pelletizer shell is fixedly installed with an electric push rod and a telescopic rod, the upper surface of the pelletizer shell is provided with a pelletizing extrusion cylinder in a penetrating mode, the lower surface of the pelletizing extrusion cylinder is provided with a pelletizing cutting knife, the driving motor shaft of the pelletizing cutting knife penetrates the surfaces of the lower support and the upper support, and the driving motor shaft of the pelletizing cutting knife is rotationally connected between the lower support and the upper support.

[0013] Adopting the technical scheme, the normal rotation of the supporting rod can be ensured by the rotationally connected lower support and upper support, and the rotation of the grinding wheel is avoided to be hindered.

[0014] Compared with the prior art, the automatic knife sharpening structure of the polyethylene pelletizer has the beneficial effects that:

[0015] 1. In the device, the grinding wheel is installed in the pelletizer shell, the height of the grinding wheel is adjusted by the driving of the electric push rod, the grinding wheel with the changed height can approach the pelletizing cutting knife in the pelletizer shell, so that the surface of the pelletizing cutting knife is automatically polished by the grinding wheel, and the cutting efficiency of the pelletizing cutting knife is ensured.

[0016] 2. In the device, the grinding wheel is connected with the bearing plate through the supporting rod, the bearing plate is rotationally installed on the surface of the connecting plate, the driving motor and the gear provided on the outer surface of the connecting plate in a synchronous motion can drive the bearing plate and the grinding wheel to rotate, and the rotating grinding wheel can thoroughly polish the pelletizing cutting knife.

[0017] 3. The device support plate and connecting plate are installed in the lower support, the upper support is rotatably connected to the upper surface of the lower support, and the upper support is driven to rotate on the surface of the lower support during the rotation of the grinding wheel. The rotatably connected lower support and upper support support the grinding wheel and other structures without hindering the rotation of the grinding wheel. The lower support and the upper support are both circular truncated cone structures, so that the discharge process of the polyethylene particles is not affected during the idle process of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an external structure schematic diagram of the utility model;

[0019] Figure 2 It is a bottom view structure schematic diagram of the utility model;

[0020] Figure 3 It is a front view structure schematic diagram of the utility model;

[0021] Figure 4 It is a grinding wheel front view structure schematic diagram of the utility model;

[0022] Figure 5 It is a granulator shell connecting structure schematic diagram of the utility model;

[0023] Figure 6 It is a granulator shell connecting front view structure schematic diagram of the utility model.

[0024] In the figure: 1, lower support; 2, upper support; 3, support rod; 4, grinding wheel; 5, support plate; 6, connecting plate; 7, electric push rod; 8, telescopic rod; 9, drive motor; 10, gear; 11, granulator shell; 12, granulator extrusion cylinder; 13, granulator cutting knife. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figures 1-6 The utility model provides a kind of technical solutions: a kind of automatic knife grinding structure of polyethylene particle granulator, including lower support 1, upper support 2, support rod 3, grinding wheel 4, support plate 5, connecting plate 6, electric push rod 7, telescopic rod 8, drive motor 9, gear 10, granulator shell 11, granulator extrusion cylinder 12, granulator cutting knife 13.

[0027] The lower support 1 is a hollow circular truncated cone structure with an open upper surface. The upper surface of the lower support 1 is rotationally connected to an upper support 2, which is a circular truncated cone structure. The surface of the upper support 2 is provided with a support rod 3, which is slidingly connected to the surface of the upper support 2. The support rod 3 is symmetrically provided with two support rods 3, which are connected to the lower surface of the same grinding wheel 4. The lower support 1 is fixedly connected to the inner wall of the pelletizer shell 11. The bottom surface of the inner wall of the pelletizer shell 11 is fixedly installed with an electric push rod 7 and an extension rod 8. The upper surface of the pelletizer shell 11 is provided with a pelletizer extrusion cylinder 12. The lower surface of the pelletizer extrusion cylinder 12 is provided with a pelletizer cutting knife 13. The drive motor shaft of the pelletizer cutting knife 13 penetrates the surfaces of the lower support 1 and the upper support 2, and is rotationally connected between the lower support 1 and the upper support 2.

[0028] As shown in Figure 5 and Figure 6 , the device is connected with the pelletizer shell 11, so that the lower support 1 is fixedly connected to the inner wall of the pelletizer shell 11, and the surfaces of the lower support 1 and the upper support 2 penetrate the drive motor shaft of the pelletizer cutting knife 13. At this time, the circular ring-shaped grinding wheel 4, the supporting plate 5 and the connecting plate 6 respectively penetrate the drive motor shaft of the pelletizer cutting knife 13. The electric push rod 7 and the extension rod 8 are respectively fixed to the bottom surface of the inner wall of the pelletizer shell 11. When the pelletizer cutting knife 13 starts to cut and granulate the polyethylene particles, the cut polyethylene particles slide off the outer surface of the circular truncated cone-shaped upper support 2 and the lower support 1, avoiding the grinding knife structure from hindering the discharging process of the polyethylene particles when it is idle.

[0029] The lower support 1 is provided with a lifting structure, which can adjust the height of the grinding wheel 4 so that the grinding wheel 4 is close to the pelletizer cutting knife 13 for grinding. The lifting structure includes a supporting plate 5, which is a circular ring-shaped plate structure. The upper surface of the supporting plate 5 is fixedly connected to the lower surface of the support rod 3. The lower surface of the supporting plate 5 is rotationally connected to the upper surface of a connecting plate 6, which is a circular ring-shaped plate structure. The lower surface of the connecting plate 6 is fixedly connected to the output end of an electric push rod 7 located below the lower support 1 on one side. The other side of the lower surface of the connecting plate 6 is provided with an extension rod 8, which penetrates the lower surface of the lower support 1. The extension rod 8 is symmetrically provided with the output end of the electric push rod 7. The surface of the connecting plate 6 is provided with a driving structure, which can realize the rotation process of the grinding wheel 4. The driving structure includes a drive motor 9 fixedly connected to the outer surface of the connecting plate 6 through a support. The output end of the drive motor 9 is fixedly connected with a gear 10, which is aligned with the supporting plate 5. The outer surface of the supporting plate 5 is provided with a tooth block structure, and the tooth block of the outer surface of the supporting plate 5 is engaged with the gear 10.

[0030] As shown in Figure 1 , Figure 2 , Figure 3 andFigure 4 As shown, when the cutting knife 13 of the dicing machine is polished, the electric push rod 7 is started, the connecting plate 6 is lifted upward in the inside of the lower support 1, and the telescopic rod 8 on the other side is elongated in the process of lifting the connecting plate 6, so that the connecting plate 6 is steadily lifted, the supporting plate 5 is lifted by the connecting plate 6, the supporting rod 3 on the surface is moved upward by the supporting plate 5, the grinding wheel 4 is moved close to the cutting knife 13 of the dicing machine by the moving supporting rod 3, in the process, the driving motor 9 and the gear 10 are lifted synchronously with the connecting plate 6, the driving motor 9 is started, the gear 10 is rotated by the driving motor 9, the supporting plate 5 is rotated by the rotating gear 10, the supporting rod 3 is rotated by the rotating supporting plate 5, and the upper support 2 is rotated on the surface of the lower support 1 in the process of rotating the supporting rod 3 due to the rotary connection between the lower support 1 and the upper support 2, so that the upper support 2 does not hinder the rotation of the supporting rod 3, and the grinding wheel 4 is rotated to polish the cutting knife 13 of the dicing machine.

[0031] Working principle: when the automatic knife sharpening structure of the polyethylene particle dicing machine is used, the electric push rod 7 is started, the connecting plate 6 and the supporting plate 5 are moved upward, so that the supporting rod 3 and the grinding wheel 4 are moved upward and close to the cutting knife 13 of the dicing machine, the driving motor 9 is started, the gear 10 is rotated by the driving motor 9, the supporting plate 5 is rotated by the rotating gear 10, the supporting rod 3 is rotated by the supporting plate 5, and the grinding wheel 4 is rotated to polish the cutting knife 13 of the dicing machine, and when the polishing structure is idle, the polyethylene particles can slide out of the material from the outer surface of the upper support 2 and the lower support 1 of the circular table structure, thereby increasing the practicability of the whole.

[0032] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic grinding structure of a polyethylene particle dicing machine, comprising a lower support (1), which is a hollow circular truncated cone structure with an open upper surface, the upper surface of the lower support (1) is rotatably connected with an upper support (2), the upper support (2) is a truncated cone structure, a support rod (3) is arranged through the surface of the upper support (2), the support rod (3) is slidably connected with the surface of the upper support (2), the support rod (3) is symmetrically provided with two, and the two support rods (3) are connected to the lower surface of a same grinding wheel (4). The inside of the lower support (1) is provided with a lifting structure, which can adjust the height of the grinding wheel (4) to make the grinding wheel (4) close to the pellet cutting knife (13) for grinding.

2. The automatic knife sharpening structure of a polyethylene pellet dicer according to claim 1, characterized in that: The lifting structure comprises a supporting plate (5), which is a circular plate structure, the upper surface of the supporting plate (5) is fixedly connected with the lower surface of the supporting rod (3), the lower surface of the supporting plate (5) is rotatably connected with the upper surface of the connecting plate (6), the connecting plate (6) is a circular plate structure, one side of the lower surface of the connecting plate (6) is fixedly connected with the output end of the electric push rod (7), the electric push rod (7) is located below the lower support (1), the other side of the lower surface of the connecting plate (6) is provided with a telescopic rod (8), the telescopic rod (8) penetrates through the lower surface of the lower support (1), and the telescopic rod (8) is symmetrically arranged with the output end of the electric push rod (7).

3. The automatic knife sharpening structure of a polyethylene pellet dicer according to claim 2, characterized in that: The surface of the connecting plate (6) is provided with a driving structure, which can realize the rotating process of the grinding wheel (4).

4. The automatic knife sharpening structure of a polyethylene pellet dicing machine according to claim 3, characterized in that: The driving structure comprises a driving motor (9), which is fixedly connected with the outer surface of the connecting plate (6) through a support, the output end of the driving motor (9) is fixedly connected with a gear (10), the gear (10) is aligned with the supporting plate (5), the outer surface of the supporting plate (5) is provided with a tooth block structure, and the tooth block of the outer surface of the supporting plate (5) is engaged with the gear (10).

5. The automatic knife sharpening structure of a polyethylene pellet dicer according to claim 1, wherein: The lower support (1) is fixedly connected with the inner wall of the pelletizer shell (11), the bottom surface of the inner wall of the pelletizer shell (11) is fixedly installed with the electric push rod (7) and the telescopic rod (8), the upper surface of the pelletizer shell (11) is provided with a pelletizer extrusion cylinder (12), the lower surface of the pelletizer extrusion cylinder (12) is provided with a pellet cutting knife (13), the driving motor shaft of the pellet cutting knife (13) penetrates the surfaces of the lower support (1) and the upper support (2), and the driving motor shaft of the pellet cutting knife (13) is rotatably connected with the lower support (1) and the upper support (2).

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