A kind of magnetic quick-release guide cover structure's master batch granulator

Abstract

This utility model relates to the technical field of masterbatch granulation equipment, specifically a masterbatch granulation device with a magnetic quick-release guide cover structure. It includes a screw extruder, a discharge port connecting plate, a cutting disc, a guide cover, a magnetic fixing structure, and a limiting and locking assembly. The guide cover and the connecting plate are attracted and attached by positioning magnetic blocks. Elastic stops are provided for radial limiting, and a limiting pin and a slot structure ensure anti-detachment locking. A soft sealing gasket is placed between the guide cover and the connecting plate to seal against particle splashing. The device is also equipped with a combination of limiting cloth and buffer cloth for particle discharge and shock absorption. This utility model has advantages such as quick-release structure, simple installation, reliable positioning, good buffering effect, and high maintenance efficiency. It is suitable for rapid inspection and replacement of the discharge end of various plastic masterbatch granulation production lines and can be widely applied to plastic masterbatch granulation production lines with high-frequency maintenance requirements.

Description

Technical Field

[0001] This utility model relates to the field of masterbatch granulation equipment, specifically a masterbatch granulation device with a magnetic quick-release guide cover structure. Background Technology

[0002] Existing masterbatch granulation equipment typically features guide covers at the cutting outlet to guide the granules. However, these guide covers are mostly fixed by welding or bolts, making maintenance and replacement extremely inconvenient. They also obstruct the cutting area, affecting operation and cleaning efficiency. Therefore, there is an urgent need for a guide cover structure that is detachable, easy to install, and offers greater spatial openness. Utility Model Content

[0003] The purpose of this invention is to provide a masterbatch granulation device with a magnetic quick-release guide cover structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A masterbatch granulation device with a magnetic quick-release guide cover structure includes a screw extruder, a motor, a connecting shaft, and a cutting disc;

[0006] The spiral extruder has a connecting plate at its discharge port, and positioning holes are provided on both sides of the connecting plate, with elastic stoppers embedded in the positioning holes;

[0007] The guide cover is a semi-cylindrical part, which is fitted and installed on the outer arc of the connecting plate. Positioning magnetic blocks are provided on both sides of the cover for adsorption and fitting with the positioning holes.

[0008] The outer wall of the guide cover is provided with a handle and a limiting hole. A limiting pin is inserted into the limiting hole, and a limiting slot is provided at the tail end of the limiting pin for inserting into the locking connecting plate structure.

[0009] Furthermore, the elastic stop includes a spring-loaded plunger structure with a hemispherical contact head at its front end, which provides radial limiting function during guide cover installation.

[0010] Furthermore, the positioning magnetic block is a neodymium iron boron permanent magnet with a magnetic attraction force of not less than 20N, and is embedded in the side wall of the guide cover with epoxy resin.

[0011] Furthermore, the handle is fixed to the guide cover housing by screws or snap-fit ​​installation, and is used for manual and quick loading and unloading of the guide cover.

[0012] Furthermore, the tail end of the limiting pin is provided with a pluggable stepped structure limiting slot, which is inserted into the limiting hole to form a locking mechanism to prevent vibration from causing it to fall off.

[0013] Furthermore, a closed-cell rubber sealing gasket with a thickness of approximately 3 mm is provided between the guide cover and the connecting plate to seal the area where particles splash.

[0014] Furthermore, a limiting cloth and a buffer cloth are provided below the connecting plate to guide and buffer the falling particles.

[0015] Furthermore, a replaceable shock-absorbing pad is adhered to the inner side of the cushioning cloth, and the shock-absorbing pad is fixed by a hook and loop fastener structure.

[0016] Furthermore, the arc curvature of the guide cover perfectly matches the outer edge of the connecting plate, and the machining tolerance is controlled within ±0.3mm.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this utility model, the guide cover adopts a dual fixing form of magnetic attraction and limiting, and with the addition of a handle and lightweight design, it can be quickly disassembled and assembled by a single person; the positioning magnetic block structure can avoid the use of tools and improve maintenance efficiency; and with the addition of a buffer device, it improves the smoothness of material discharge and the convenience of cleaning of the whole machine, and has good industrial practical value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a diagram showing the magnetic connection structure between the guide cover and the connecting plate.

[0021] Figure 3 Enlarged view of the guide cover limiting structure;

[0022] Figure 4 A cross-sectional view of the guide cover, elastic baffle, and magnetic structure assembly.

[0023] Figure 5 This is a schematic diagram of the arrangement of the cushioning fabric and the restraining fabric (including the tensioning structure);

[0024] Figure 6 This is a schematic diagram of the structure where the limiting pin is inserted into the limiting hole and then locked into the limiting slot (anti-disengagement state).

[0025] In the diagram: 1. Spiral extruder, 2. Motor, 3. Connecting plate, 4. Connecting shaft, 5. Cutting disc, 13. Guide cover, 14. Positioning magnet, 20. Mounting plate, 21. Restricting cloth, 28. Buffer cloth, 31. Positioning hole, 32. Elastic stop, 33. Handle, 34. Limiting hole, 35. Limiting pin, 36. Sealing gasket. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 6 As shown, a masterbatch granulation device with a magnetic quick-release guide cover structure includes a screw extruder 1, a mounting plate 20, a motor 2, a connecting shaft 4, and multiple cutting discs 5. The motor 2 is fixed to the side of the frame of the screw extruder 1 via the mounting plate 20, and its output shaft drives the multiple cutting discs 5 to rotate at high speed via the connecting shaft 4 to complete the granulation of the extruded masterbatch.

[0028] To guide the material discharge and protect the cutting area, a connecting plate 3 is provided on the outer side of the cutting disc 5. The connecting plate 3 has an arc-shaped structure and is symmetrically installed around the periphery of the discharge port of the spiral extruder 1. Positioning holes 31 are provided on both sides of the connecting plate 3, and elastic stoppers 32 are embedded in the positioning holes 31. The elastic stopper 32 consists of a compression spring and a plunger. The plunger body can be made of stainless steel or brass, and its end has a hemispherical structure. It provides lateral support during the assembly of the guide cover 13, ensuring that the structure does not shift left or right after fitting.

[0029] The guide cover 13 is a semi-cylindrical metal cover that is curved along the axial direction. Its arc-shaped outer edge has the same curvature as the outer arc of the connecting plate 3, and the fitting accuracy is controlled within ±0.3mm. Positioning magnetic blocks 14 are provided at both ends of the guide cover 13. The positioning magnetic blocks 14 are embedded NdFeB neodymium iron boron permanent magnets with a magnetic flux density ≥3500 Gauss and a unit magnetic attraction force of not less than 20N. They are filled with epoxy resin and then sealed in countersunk holes on both sides of the cover. A pair of handles 33 are provided near the middle of the front section of the guide cover 13. They are fixed to the outer shell with screws or quick-release mechanisms for manual gripping during installation and disassembly.

[0030] A limiting hole 34 is provided at the bottom of the guide cover 13. The diameter of this hole corresponds to the limiting pin 35 set on the side of the connecting plate 3. The tail end of the limiting pin 35 is provided with a stepped limiting groove. When inserted into the limiting hole 34 of the guide cover 13, it engages with the inner wall structure of the connecting plate by a locking method to prevent the guide cover from loosening or falling off due to high-frequency vibration during equipment operation. This insertion process is a linear sliding insertion method, which does not require threads or tools and is easy to operate.

[0031] A closed-cell rubber pad 36 with a thickness of about 3mm is also provided between the guide cover 13 and the connecting plate 3. The pad is made of EPDM or fluororubber and is laid along the mating curved surface. It is mainly used to block the path of particle splashing, prevent cutting dust from seeping into the gaps of the equipment, and improve the cleanliness of the whole machine.

[0032] Below the connecting plate 3, a limiting cloth 21 and a buffer cloth 28 are connected and installed. The limiting cloth 21 is made of flexible coated fabric with a certain degree of heat resistance and corrosion resistance on its outer surface. Thickened bandage edges are sewn at the four corners, and the front end of the limiting cloth can be hooked to the front end of the cover to guide the direction of falling particles. The buffer cloth 28 is installed below the limiting cloth, and a replaceable shock-absorbing pad is attached to its inner side by Velcro. The shock-absorbing pad can be made of EVA foam board or PU cushioning material, which can effectively reduce the impact of particles and reduce noise.

[0033] The assembly and disassembly process is as follows:

[0034] First, attach the front end of the guide cover 13 to the outer arc of the connecting plate 3 and adjust the angle for alignment;

[0035] The second step is that the positioning magnetic block 14 automatically adheres and is initially fixed after contacting the edge of the positioning hole 31;

[0036] The third step is to manually push the guide cover 13 to compress the elastic baffles 32 at both ends, forming a radially stable contact;

[0037] Fourth step, align the limiting pin 35 with the limiting hole 34 and insert it. The pin slot will automatically engage with the internal structure of the connecting plate.

[0038] Finally, check the compaction of the sealing gasket 36. Once it is confirmed that there is no looseness, the assembly is complete.

[0039] Disassembly is performed in reverse order: first pull out the limiting pin 35, then pull the guide cover 13 to release the adsorption and elastic limit. The entire process does not require any tools and can be completed by one person within 30 seconds.

[0040] This device is suitable for plastic masterbatch granulation production lines with high requirements for maintenance response time, especially for masterbatch enterprises with a daily output of more than 5 tons and frequent model changes; it is also suitable for highly automated continuous extrusion granulation lines to avoid line stoppages or safety hazards caused by difficulty in disassembling guide covers.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A masterbatch granulation device with a magnetic quick-release guide cover structure, comprising a screw extruder (1), a motor (2), a connecting shaft (4), and a cutting disc (5), characterized in that: The spiral extruder (1) has a connecting plate (3) at its discharge port. The connecting plate (3) has positioning holes (31) on both sides, and elastic baffles (32) are embedded in the positioning holes. The guide cover (13) is a semi-cylindrical part, which is fitted and installed on the outer arc of the connecting plate (3). Positioning magnetic blocks (14) are provided on both sides for adsorption and fitting with the positioning hole (31). The outer wall of the guide cover (13) is provided with a handle (33) and a limiting hole (34). The limiting hole (34) is connected to a limiting pin (35). The tail end of the limiting pin (35) is provided with a limiting slot for inserting into the locking connecting plate structure.

2. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: The elastic stop (32) includes a spring-loaded plunger structure with a hemispherical contact head at its front end, which provides radial limiting function when the guide cover is installed.

3. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: The positioning magnetic block (14) is a neodymium iron boron permanent magnet with a magnetic attraction force of not less than 20N, and is embedded in the side wall of the guide cover (13) by epoxy resin.

4. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: The handle (33) is fixed to the outer shell of the guide cover (13) by screws or snap fasteners and is used for manual quick loading and unloading of the guide cover.

5. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: The tail end of the limiting pin (35) is provided with a plug-in stepped structure limiting slot, which is inserted into the limiting hole (34) to form a locking and prevent vibration from causing it to fall off.

6. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: A closed-cell rubber sealing gasket (36) with a thickness of about 3 mm is provided between the guide cover (13) and the connecting plate (3) to seal the area where particles splash.

7. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: The connecting plate (3) is provided with a limiting cloth (21) and a buffer cloth (28) below it to guide and buffer the falling particles.

8. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 7, characterized in that: A replaceable shock-absorbing pad is bonded to the inside of the cushioning cloth (28), and the shock-absorbing pad is fixed by a hook and loop fastener structure.

9. The masterbatch granulation device with a magnetic quick-release guide cover structure according to claim 1, characterized in that: The arc curvature of the guide cover (13) is perfectly matched with the outer edge of the connecting plate (3), and the machining tolerance is controlled within ±0.3mm.

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