A pelletizer for rubber processing

Abstract

The present invention relates to the technical field of rubber granulation, and specifically discloses a granulator for rubber processing, which includes a frame, a first hob, a second hob and a spreading mechanism. The spreading mechanism includes a cloth roller, a cloth member and a feeding member. The cloth roller is rotatably arranged on the frame. A plurality of partition plates are evenly arranged along the circumferential direction on the outer peripheral side of the cloth roller, and a material containing cavity for accommodating talcum powder is formed between any two adjacent partition plates. The outer side of the partition plate can be tangent to the outer circumference of the second hob, and the cloth roller and the second hob rotate synchronously and in opposite directions. The cloth member includes a plurality of cloth plates and a first driving structure. Each cloth plate slides radially along the cloth roller and is located in the corresponding material containing cavity. The feeding member is used to convey talcum powder into each material containing cavity during the rotation of the cloth roller. The present invention can utilize the rotation of the cloth roller and the radial sliding of the cloth member to cover the surface of the cut rubber particles with talcum powder to form an isolation layer, effectively preventing the adjacent particles from sticking to each other.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber granulation, and particularly relates to a granulator for rubber processing. Background Art

[0002] Rubber is a high-molecular compound with high elasticity and good wear resistance, mainly including natural rubber and synthetic rubber. It can return to its original state within a large deformation range and withstand repeated friction without being easily damaged. A rubber granulator is a device used to cut rubber materials into small particles. Usually, the rubber is cut and broken by a shearing method, and it is mainly applied in the production process of rubber products. In some rubber granulators, the rubber is first cut into strips by a cross-cutting device, and then the cross-cut rubber strips are cut into granular by a longitudinal cutting device.

[0003] The patent document with the publication number of CN211762744U discloses a strip cutting and granulating machine for rubber raw sheets, which includes a frame, a motor, a cutter roller, a partition plate, a conduction roller and a cutting knife. The motor includes a strip cutting motor and a granulating motor. The cutter roller is a roller structure with alternating cutter wheels and cutter grooves and is composed of an upper cutter roller and a lower cutter roller. The cutter roller is connected to the frame through a mounting plate. One side of the mounting plate extends with a cutter roller shaft, and the lower cutter roller shaft is connected to the strip cutting motor through a sprocket and a chain; the partition plate is a long strip structure and is evenly distributed with a plurality of isolation piles on it; the conduction roller is composed of an upper roller and a lower roller. The cutting knife includes a bottom knife and a cutting wheel. The bottom knife is a strip plate structure with a cutting edge and is fixed at both ends on the frame behind the conduction roller. The cutting wheel is a rotating cross-cutting knife structure. When in use, the film is cut into rubber strips by the cutter wheels and cutter grooves of the upper cutter roller and the lower cutter roller which are misaligned. The knife strip rotates onto the rubber strip under the drive of the cutting wheel and transversely cuts a section of the rubber strip to form rubber particles.

[0004] However, during the granulation process, due to the strong adhesiveness of the rubber material itself, the cut rubber particles are prone to sticking to each other when in contact, which affects the granulation effect. In addition, the high-speed rotation and shearing action of the cutting knife will generate heat, causing the temperature of the rubber surface to rise. This temperature rise will lead to an increase in the viscosity of the rubber surface, making it easier for the cut rubber particles to stick to each other. This results in the need to add additional steps to separate the stuck rubber particles in the subsequent process, affecting the work efficiency. Summary of the Invention

[0005] The present invention provides a granulator for rubber processing, aiming to solve the problem that the cut rubber particles in the related granulation device are prone to sticking to each other due to their own adhesiveness, heat generated by the tool, etc., which affects the granulation effect and may require additional steps to separate the stuck rubber particles in the subsequent process, thus affecting the work efficiency.

[0006] A granulator for rubber processing according to the present invention includes a frame, a first hob for cutting rubber into strips, and a second hob for cutting rubber into granules, and further includes a spreading mechanism. The spreading mechanism includes a cloth roller, a cloth member, and a feeding member;

[0007] The cloth roller is rotatably arranged on the frame. A plurality of partition plates are evenly arranged along the circumferential direction on the outer peripheral side of the cloth roller, and a material containing cavity for accommodating talcum powder is formed between any two adjacent partition plates. The outer side of the partition plate can be tangent to the outer periphery of the second hob. The cloth roller and the second hob rotate synchronously and in opposite directions, so that during the granulation process, each material containing cavity can correspond to the space formed between two adjacent cutting edges on the second hob;

[0008] The cloth member includes a plurality of cloth plates and a driving structure I. Each cloth plate is slidably arranged in the corresponding material containing cavity along the radial direction of the cloth roller. The driving structure I is used to drive the cloth plate located in the material containing cavity to slide along the radial direction of the cloth roller when the material containing cavity faces the tangent position with the second hob;

[0009] The feeding member is arranged on the frame and is used to convey talcum powder into each material containing cavity during the rotation of the cloth roller.

[0010] During operation, first, the rubber plate is cut into strips by the first hob, and then the rubber strips are rolled into granules by the second hob. While the second hob rotates, the cloth roller rotates synchronously. When the material containing cavity does not face the tangent position between the second hob and the cloth roller, the cloth plate is in a retracted state. At this time, there is enough space in the material containing cavity to receive talcum powder, and talcum powder can be conveyed into the material containing cavity through the feeding member. When the material containing cavity faces the tangent position between the second hob and the cloth roller, the driving structure I is used to drive the cloth plate to slide outward along the radial direction of the cloth roller. Through the outward extension of the cloth plate, the talcum powder in the material containing cavity can be sent into the gap between the cutting edges on the second hob, so that the talcum powder covers the surface of the cut rubber granules to form an isolation layer, effectively solving the problem of adhesion of rubber granules caused by viscosity.

[0011] Preferably, an installation frame is arranged between the first hob and the second hob. A cavity for installing the cloth roller is arranged in the installation frame. A rotating shaft is rotatably installed in the cavity. The cloth roller is slidably installed on the outer side of the rotating shaft along the axial direction of the rotating shaft, so that the cloth roller can rotate synchronously with the rotating shaft and can slide relative to the rotating shaft. A driving structure II is installed on the frame, and the driving structure II is used to drive the cloth roller to slide relative to the rotating shaft.

[0012] The effect is that through the axial sliding of the cloth roller, the cloth plate can laterally rub the cut rubber granules, effectively separating adjacent granules. At the same time, it is beneficial to evenly fill the gap between granules with talcum powder, ensuring the effective separation between rubber granules. In addition, it can effectively separate the rubber granules from the second hob, ensuring the subsequent granulation effect of the second hob.

[0013] Preferably, the first driving structure includes a connecting rod disposed at the end of the fabric plate and a chute disposed on the mounting frame. Each fabric plate is slidably engaged with the chute through the corresponding connecting rod. The chute includes a first arc-shaped groove and a second arc-shaped groove. Both the first arc-shaped groove and the second arc-shaped groove are arranged along the circumferential direction of the fabric roller, and the distance between the first arc-shaped groove and the axis of the fabric roller is less than the distance between the second arc-shaped groove and the axis of the fabric roller. An inclined groove one is communicated between the inlet end of the first arc-shaped groove and the outlet end of the second arc-shaped groove, and an inclined groove two is communicated between the outlet end of the first arc-shaped groove and the inlet end of the second arc-shaped groove.

[0014] Preferably, a first driving member for driving the first hob to rotate and a second driving member for driving the second hob to rotate are provided on the frame. The end of the rotating shaft rotatably penetrates through the frame, and the second hob is connected to the rotating shaft through a double-sided tooth synchronous belt, so that the second hob and the fabric roller can rotate synchronously and in opposite directions.

[0015] Preferably, the second driving structure includes a plurality of first guide blocks and a plurality of second guide blocks. The plurality of first guide blocks are installed on the mounting frame at intervals along the circumferential direction of the fabric roller. The plurality of second guide blocks are installed on the end of the fabric roller facing the first guide blocks at intervals along the circumferential direction of the fabric roller. A first inclined surface is provided at one end of each first guide block facing the fabric roller, and the first inclined surface is inclined towards the fabric roller along the rotation direction of the fabric roller. A second inclined surface is provided at one end of each second guide block facing the first guide block, and the second inclined surface is inclined towards the fabric roller along the rotation direction of the fabric roller. An elastic member one for driving the fabric roller to reset is provided between the end of the fabric roller and the mounting frame.

[0016] Preferably, a conveying roller and a pressing roller are rotatably provided on the frame. The conveying roller is disposed between the first hob and the second hob. The conveying roller and the pressing roller are arranged vertically, and there is a space for the rubber to pass through between them. Gears are respectively connected to the ends of the conveying roller and the first hob, and the two gears are meshed and driven.

[0017] Preferably, the feeding member includes a feeding cylinder, a feeding hopper, a screw shaft and screw blades. The feeding cylinder is disposed on the frame, and a plurality of feeding holes are provided on one side of the feeding cylinder facing the fabric roller. The feeding hopper is installed on the frame, and the discharge port provided at the lower end of the feeding hopper communicates with the inside of the feeding cylinder. The screw shaft is rotatably installed in the feeding cylinder, and a third driving member for driving the screw shaft to rotate is provided on the frame. The screw blades are installed on the screw shaft.

[0018] The effect is that the rotation of the screw blades can push the talcum powder to move axially in the feeding cylinder, ensuring that the talcum powder in the feeding cylinder can be evenly fed into the material receiving cavity, realizing the uniform feeding of the talcum powder, and further ensuring the subsequent spreading effect of the talcum powder.

[0019] Preferably, a third driving structure for driving the blanking hole to open or close is provided on the frame. The third driving structure includes a material blocking plate and a pushing plate. The material blocking plate is slidably mounted on the mounting frame along the axial direction of the material conveying cylinder, and an elastic member II for driving the material blocking plate to reset is provided between the material blocking plate and the mounting frame. A through hole corresponding to the blanking hole is provided on the material blocking plate. The pushing plate is mounted on the material blocking plate. When the cloth roller slides along its own axial direction, the end of the cloth roller can contact the pushing plate and push the material blocking plate to move, so that the through hole is aligned or staggered with the blanking hole.

[0020] The effect is that it can automatically trigger feeding when the cloth roller slides axially, and automatically stop feeding when the cloth roller resets, preventing material leakage in the non-working state and effectively avoiding the blockage problem caused by excessive accumulation of talcum powder.

[0021] Preferably, an inclined blanking channel is provided below the second hob. An activity plate is provided between the second hob and the blanking channel. The activity plate is inclined and mounted on the frame, and the inclination direction of the activity plate is opposite to the inclination direction of the blanking channel. One end of the activity plate is rotationally matched with the frame through a hinge shaft. A fourth driving structure is provided on the frame, and the fourth driving structure is used to drive the activity plate to swing around the hinge shaft.

[0022] The effect is that it can vibrate and impact the rubber particles falling on the activity plate through the swing of the activity plate to realize the dispersion of the particles, and effectively prevent the problem of accumulation and adhesion of the particles caused by viscosity during the blanking process after granulation.

[0023] Preferably, the fourth driving structure includes a driving rod. The driving rod is longitudinally slidably mounted on the frame. The lower end of the driving rod is hinged to the end of the activity plate away from the hinge shaft. An inclined surface III is provided at the upper end of the driving rod. The inclined surface III inclines downward in the direction close to the cloth roller from top to bottom. During the process of the cloth roller sliding along its own axial direction, the end of the cloth roller can contact the inclined surface III and drive the driving rod to move downward. An elastic member II for driving the driving rod to reset is provided between the driving rod and the mounting frame.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The present invention is provided with a spreading mechanism. When the rubber strip is granulated by the rotation of the second hob, the cloth roller rotates synchronously. During this process, when the material receiving cavity is not facing the tangential position of the cloth roller and the second hob, the cloth plate is in the retracted state. At this time, talcum powder can be conveyed into the material receiving cavity through the feeding member. When the material receiving cavity faces the tangential position of the cloth roller and the second hob, the cloth plate slides axially outward along the cloth roller. At this time, the talcum powder in the material receiving cavity can be sent into the blade gap on the second hob, so that the talcum powder covers the surface of the rubber particles to form an isolation layer, effectively avoiding mutual adhesion between adjacent particles.

[0026] 2. The present invention can make the cloth roller slide axially relative to the rotating shaft through the cooperation of the guide block 1 and the guide block 2. As the cloth roller slides axially, the cloth plate can perform transverse friction on the cut rubber particles, thereby separating adjacent particles and evenly filling the talcum powder into the gaps between the particles to ensure the separation effect between the particles. At this time, it is beneficial to achieve the separation between the particles and the roller cutter 2, thereby ensuring the subsequent pelletizing effect of the roller cutter 2.

[0027] 3. The present invention is provided with a movable plate, which can utilize the axial sliding of the cloth roller to realize the swing of the movable plate, so that the movable plate generates vibration impact to break up the adhered particles, and effectively prevent the accumulation and adhesion of the rubber particles after pelletizing due to viscosity during the blanking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a front view of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the present invention cut along the longitudinal direction.

[0031] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0032] Figure 5 It is a schematic diagram of the assembly structure of the cloth roller and the cloth member of the present invention.

[0033] Figure 6 It is a schematic diagram of the assembly structure of the mounting frame and the guide block 1 of the present invention.

[0034] Figure 7 It is a structural schematic diagram of the chute of the present invention.

[0035] Figure 8 It is a schematic diagram of the assembly structure of the cloth roller and the guide block 2 of the present invention.

[0036] Figure 9 It is a schematic diagram of the assembly structure of the movable plate and the driving rod of the present invention.

[0037] Figure 10 It is a schematic diagram of the assembly structure of the cloth roller and the driving rod of the present invention.

[0038] Reference numerals:

[0039] 1. Frame; 11. First hob; 12. Second hob; 13. Second driving member; 14. Conveyor roller; 15. Squeezing roller; 16. Gear; 17. Blanking channel; 2. Feeding roller; 201. Material storage cavity; 21. Partition board; 22. Mounting rack; 23. Rotating shaft; 24. First guiding block; 25. Second guiding block; 26. First elastic member; 3. Feeding member; 31. Feeding plate; 32. Connecting rod; 33. Sliding groove; 331. First arc groove; 332. Second arc groove; 333. First inclined groove; 334. Second inclined groove; 4. Material supply member; 41. Material conveying cylinder; 411. Material discharging hole; 42. Hopper; 43. Screw shaft; 44. Screw blade; 45. Baffle plate; 451. Through hole; 46. Pushing plate; 5. Movable plate; 51. Hinge shaft; 52. Driving rod; 53. Third elastic member. Detailed implementation manners

[0040] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0041] As Figures 1 to 10 shown, a pelletizer for rubber processing according to the present invention includes a frame 1, a first hob 11, a second hob 12 and a spreading mechanism. Through the cooperation of the first hob 11 and the second hob 12, the rubber plate to be processed can be cut into particles. The spreading mechanism is used to spread talcum powder on the surface of the cut rubber particles to prevent the rubber particles from sticking to each other.

[0042] For the convenience of understanding, in this embodiment, the length direction of the frame 1 is defined as the left - right direction, and the width direction of the frame 1 is defined as the front - back direction.

[0043] As Figures 1 to 3 shown, the first hob 11 is rotatably installed at the front end of the frame 1, and a first driving member (not shown in the figure) for driving the first hob 11 to rotate is installed on the frame 1. The first driving member can be a motor. The second hob 12 is rotatably installed at the rear end of the frame 1, and a second driving member 13 for driving the second hob 12 to rotate is installed on the frame 1. The second driving member 13 can be a motor. The main shafts of the first hob 11 and the second hob 12 are both arranged along the left - right direction. Among them, each cutting edge on the first hob 11 is arranged along the circumferential direction of the first hob 11, and can cut the rubber plate to be processed into strips along the front - back direction. Each cutting edge on the second hob 12 is arranged along the axial direction of the second hob 12, and can further cut the rubber strips cut by the first hob 11 into particles.

[0044] As Figures 1 to 3As shown in the figure, a conveying roller 14 and a squeezing roller 15 are rotatably installed in the frame 1. The conveying roller 14 is located between the first hob 11 and the second hob 12. The conveying roller 14 and the squeezing roller 15 are arranged vertically, and there is a space for rubber to pass through between them. Through the cooperation of the conveying roller 14 and the squeezing roller 15, a clamping area can be formed to prevent the rubber strip from shifting during the subsequent granulation process. Gears 16 are provided at the ends of the second hob 12 and the conveying roller 14, and the two gears 16 are meshed and driven to realize the rotation of the conveying roller 14. A feeding port is provided at the front end of the frame 1, and an inclined blanking channel 17 is provided below the second hob 12 for the cut rubber particles to slide down.

[0045] During operation, the rubber plate to be processed is added into the frame 1 from the feeding port. The rubber plate will first be cut into strips by the first hob 11, and then the rubber strip will enter the space between the conveying roller 14 and the squeezing roller 15 and move backward through the rotation of the conveying roller 14. When the rubber strip moves to the position of the second hob 12, it can be rolled into particles by the rotating second hob 12. Among them, through the rolling cutting method, the cut rubber particles can move in a parabolic regular motion with the rotation of the second hob 12. At this time, it is not easy for the particles to collide with each other, reducing the possibility of mutual adhesion between the particles.

[0046] As Figures 3 to 10 shown, the spreading mechanism includes a cloth roller 2, a cloth member 3 and a feeding member 4. The cloth roller 2 is rotatably arranged on the frame 1. A plurality of partition plates 21 are evenly arranged on the outer peripheral side of the cloth roller 2 in the circumferential direction, and a material containing cavity 201 for accommodating talcum powder is formed between any two adjacent partition plates 21. Among them, the cloth roller 2 can rotate synchronously with the second hob 12, so that during the granulation process, each material containing cavity 201 can correspond to the space formed between two adjacent cutting edges on the second hob 12. At the same time, the outer side of the partition plate 21 can be tangent to the outer circumference of the second hob 12, so as to better send the talcum powder in the material containing cavity 201 into the cutting edge gap on the second hob 12.

[0047] The cloth member 3 includes a plurality of cloth plates 31 and a driving structure I. Each cloth plate 31 is slidably located in the corresponding material containing cavity 201 along the radial direction of the cloth roller 2. The driving structure I is used to drive the cloth plate 31 located in the material containing cavity 201 to slide along the radial direction of the cloth roller 2 when the material containing cavity 201 faces the tangential position with the second hob 12. The feeding member 4 is arranged on the frame 1, and the feeding member 4 is used to convey talcum powder into each material containing cavity 201 during the rotation of the cloth roller 2.

[0048] Specifically, when the second hob 12 rotates for pelletizing operation, the cloth roller 2 rotates synchronously. During this process, each material storage cavity 201 passes under the feeding member 4 in sequence to complete the talcum powder filling. When a certain material storage cavity 201 rotates to the position tangent to the second hob 12, the driving structure I triggers the cloth plate 31 in this cavity to slide outwards, pushing the talcum powder into the space formed by the adjacent cutting edges of the second hob 12. At this time, the newly cut rubber pellets just leave the tool, and the talcum powder immediately covers the surface of the pellets to form an isolation layer. Therefore, the talcum powder is accurately sent to the surface of the pellets at the moment of pelletizing completion, forming a uniform isolation layer, ensuring that each newly cut pellet can obtain timely and effective surface treatment, effectively solving the adhesion problem of rubber pellets caused by viscosity, and obtaining well-dispersed rubber pellets without additional separation processes.

[0049] As Figures 3 to 7 shown, the driving structure I includes a connecting rod 32 provided at the end of the cloth plate 31 and a sliding groove 33 provided on the mounting frame 22. Each cloth plate 31 is slidably engaged with the sliding groove 33 through the corresponding connecting rod 32. The sliding groove 33 can be realized by a curved groove, and its trajectory shape determines the movement path of the connecting rod 32. The connecting rod 32, as a transmission component, converts the trajectory of the sliding groove 33 into a linear motion of the cloth plate 31. In this embodiment, the sliding groove 33 includes an arc groove I 331 and an arc groove II 332. Both the arc groove I 331 and the arc groove II 332 are arranged along the circumferential direction of the cloth roller 2, and the distance between the arc groove I 331 and the axis of the cloth roller 2 is less than the distance between the arc groove II 332 and the axis of the cloth roller 2. The relatively close radial distance of the arc groove I 331 makes the cloth plate 31 in a retracted state, so as to form a material storage cavity 201 for accommodating talcum powder between the two partition plates 21, while the relatively far radial distance of the arc groove II 332 corresponds to the extended state of the cloth plate 31, ensuring the effective spreading of the talcum powder. An inclined groove I 333 is connected between the inlet end of the arc groove I 331 and the outlet end of the arc groove II 332, and an inclined groove II 334 is connected between the outlet end of the arc groove I 331 and the inlet end of the arc groove II 332. The inclined groove I 333 and the inclined groove II 334, as transition sections, can realize the smooth switching of the movement trajectory.

[0050] Specifically, when the cloth roller 2 drives the cloth plate 31 to rotate, the end of the connecting rod 32 moves along the chute 33. When the material containing cavity 201 is not facing the tangent position of the cloth roller 2 and the second hob 12, the connecting rod 32 is located within the first arc chute 331, and the cloth plate 31 remains in the retracted state. When the material containing cavity 201 rotates to the tangent position, the connecting rod 32 enters the second arc chute 332 through the second inclined chute 334, pushing the cloth plate 31 to extend radially outward along the cloth roller 2 for the spreading of talcum powder. After the spreading is completed, the connecting rod 32 returns to the first arc chute 331 through the first inclined chute 333, and the cloth plate 31 automatically retracts. Among them, the circumferential extension length of the second arc chute 332 determines the duration of the extended state of the cloth plate 31. Therefore, the length of the second arc chute 332 can be the central angle range corresponding to the adjacent blade spacing of the second hob 12, ensuring that the spreading action corresponds precisely to the blade position, and thus ensuring the spreading effect of talcum powder.

[0051] As Figures 3 to 8 shown, an installation frame 22 is provided between the first hob 11 and the second hob 12. A cavity is provided inside the installation frame 22 for providing an installation space for the cloth roller 2. A rotating shaft 23 is rotatably installed inside the cavity, and the axial direction of the rotating shaft 23 extends along the left-right direction. The cloth roller 2 is slidably installed on the outside of the rotating shaft 23 along the axial direction of the rotating shaft 23, so that the cloth roller 2 can rotate synchronously with the rotating shaft 23 and can slide axially relative to the rotating shaft 23.

[0052] Among them, the end of the rotating shaft 23 rotatably penetrates through the machine frame 1. A synchronous pulley is installed at the end of the main shaft of the second hob 12, and a synchronous pulley is also installed at the penetrating end of the rotating shaft 23. The two synchronous pulleys are connected by a double-sided tooth synchronous belt, that is, the two sides of the double-sided tooth synchronous belt are respectively meshed with the two synchronous pulleys. When the second hob 12 rotates, the rotating shaft 23 and the cloth roller 2 will rotate in opposite directions at the same angular velocity. At this time, the material containing cavity 201 formed between two adjacent partitions 21 always remains in phase synchronization with the blade spacing of the second hob 12, ensuring the precise spreading of talcum powder.

[0053] Furthermore, a second driving structure for driving the fabric roller 2 to axially slide is provided on the frame 1. The second driving structure includes a first guiding block 24 and a second guiding block 25. A plurality of first guiding blocks 24 are provided and are installed on the mounting frame 22 at intervals along the circumferential direction of the fabric roller 2. A plurality of second guiding blocks 25 are provided and are installed on the end of the fabric roller 2 facing the first guiding block 24 at intervals along the circumferential direction of the fabric roller 2. One end of each first guiding block 24 facing the fabric roller 2 is provided with a first inclined surface, and the first inclined surface is inclined towards the fabric roller 2 along the rotation direction of the fabric roller 2. One end of each second guiding block 25 facing the first guiding block 24 is provided with a second inclined surface, and the second inclined surface is inclined towards the fabric roller 2 along the rotation direction of the fabric roller 2. An elastic member 26 is provided between the end of the fabric roller 2 and the mounting frame 22. The elastic force direction of the elastic member 26 is the same as the sliding direction of the fabric roller 2. The elastic member 26 can be a spring and is used to drive the fabric roller 2 to reset.

[0054] Specifically, when the fabric roller 2 rotates synchronously with the rotating shaft 23, the second guiding block 25 rotates synchronously with the fabric roller 2 and comes into contact with the first guiding block 24 on the mounting frame 22. When the first guiding block 24 contacts the second guiding block 25, an axial component force will be generated under the action of the first inclined surface and the second inclined surface, pushing the fabric roller 2 to move axially along the rotating shaft 23. After the second guiding block 25 passes over the first guiding block 24, the elastic member 26 pushes the fabric roller 2 to slide reversely for resetting. That is, during the rotation process, the fabric roller 2 will perform periodic reciprocating motions. Through the axial displacement of the fabric roller 2, the fabric plate 31 can be driven to laterally rub the rubber particles located between the blades, promoting the separation of adjacent particles, and at the same time enabling the talcum powder to evenly fill the particle gaps, avoiding the adhesion between particles. In addition, through the lateral friction of the fabric plate 31 on the rubber particles, it is beneficial to realize the separation between the rubber particles and the blades, avoiding the adhesion of the rubber particles to the tool due to the heat generated by the blades, and ensuring the subsequent pelletizing effect of the tool.

[0055] Such as Figures 3 to 7As shown, the feeding member 4 includes a feeding barrel 41, a lower hopper 42, an auger shaft 43 and an auger blade 44. The feeding barrel 41 is arranged on the frame 1, and is used to receive and temporarily store talcum powder. The feeding barrel 41 is provided with a lowering hole 411 on the side facing the cloth roller 2. A plurality of lowering holes 411 can be provided, and the lowering holes 411 are evenly distributed along the axial direction of the feeding barrel 41, so as to ensure that the talcum powder in the feeding barrel 41 can be evenly fed into the material holding cavity 201, thereby ensuring the subsequent spreading effect of the talcum powder. The lower hopper 42 is installed on the frame 1, and the discharge port provided at the lower end of the lower hopper 42 is communicated with the inside of the feeding barrel 41, so as to feed the received talcum powder into the inside of the feeding barrel 41, so as to ensure the continuity of feeding. The auger shaft 43 is rotatably installed in the feeding barrel 41, and a driving member 3 for driving the auger shaft 43 to rotate is provided on the frame 1, and the driving member 3 can be a motor. The auger blades 44 are mounted on the auger shaft 43 and push the talcum powder to move axially in the feeding tube 41 through rotational motion, thereby achieving uniform delivery of the talcum powder.

[0056] like Figures 3 to 7 As shown, the frame 1 is provided with a driving structure 3 for driving the material discharge hole 411 to open or close, and the driving structure 3 includes a baffle plate 45 and a push plate 46. The baffle plate 45 is slidably mounted on the mounting frame 22 along the axial direction of the material delivery cylinder 41, and can maintain a close fit with the outer wall of the material delivery cylinder 41 during the sliding process. The baffle plate 45 is provided with a through hole 451 corresponding to the material discharge hole 411, and an elastic member 2 (not shown in the figure) is provided between the baffle plate 45 and the mounting frame 22, and the elastic force direction of the elastic member 2 is the same as the sliding direction of the baffle plate 45, and the elastic member 2 can be a spring. The push plate 46 is installed in the cavity. When the cloth roller 2 moves to the right under the cooperation of the guide block 1 24 and the guide block 2 25, the push plate 46 loses the thrust of the cloth roller 2. At this time, the baffle plate 45 will move to the right under the action of the elastic member 2, so that the through hole 451 is aligned with the feeding hole 411. At this time, the feeding hole 411 is in an open state, and the talcum powder in the feeding cylinder 41 can smoothly fall into the material holding cavity 201. When the cloth roller 2 moves to the left under the action of the elastic member 1 26, the end of the cloth roller 2 can contact the push plate 46 and push the baffle plate 45 to move to the left, so that the through hole 451 is staggered with the feeding hole 411. At this time, the feeding hole 411 is in a closed state and the feeding is stopped. Therefore, the feeding can be automatically triggered when the cloth roller 2 slides axially, and the feeding can be automatically stopped when the cloth roller 2 is reset, so as to prevent the leakage of materials in the non-working state and effectively avoid the blockage problem caused by excessive accumulation of talcum powder.

[0057] like Figure 3 , Figure 9 and Figure 10As shown, there is a movable plate 5 between the hob two 12 and the blanking channel 17. The movable plate 5 is inclinedly installed on the frame 1, and the inclination direction of the movable plate 5 is opposite to that of the blanking channel 17, forming a diversion difference to disperse the particles. One end of the movable plate 5 is rotationally matched with the frame 1 through a hinge shaft 51, and the other end swings freely to generate a larger swing amplitude. A driving structure four is provided on the frame 1, and the driving structure four is used to drive the movable plate 5 to swing around the hinge shaft 51.

[0058] Among them, the driving structure four includes a driving rod 52. The driving rod 52 is longitudinally slidably installed on the frame 1. The lower end of the driving rod 52 is hinged to the end of the movable plate 5 away from the hinge shaft 51. The upper end of the driving rod 52 is provided with an inclined surface three, and the inclined surface three inclines downward and approaches the direction of the cloth roller 2. During the process of the cloth roller 2 moving left and right along its own axis, the end of the cloth roller 2 can contact the inclined surface three and drive the driving rod 52 to move downward. An elastic member three 53 is provided between the driving rod 52 and the mounting bracket 22. The elastic force direction of the elastic member three 53 is the same as the sliding direction of the driving rod 52. The elastic member three 53 can be a spring, which is used to drive the driving rod 52 to reset.

[0059] Specifically, when the cloth roller 2 moves along the axis, its end contacts the inclined surface three provided on the driving rod 52 and applies a lateral force. This lateral force is converted into the longitudinal movement of the driving rod 52 through the inclined surface three. The downward movement of the driving rod 52 drives the movable plate 5 to swing downward around the hinge shaft 51. At this time, the movable plate 5 forms a steeper diversion surface, accelerating the rubber particles to slide into the blanking channel 17. When the cloth roller 2 moves in the reverse direction and breaks away from the contact, the elastic member three 53 pushes the driving rod 52 to move upward and reset, and the movable plate 5 swings upward to generate a vibration impact, dispersing the adhered rubber particles, effectively preventing the problem of accumulation and adhesion caused by viscosity during the blanking process of the rubber particles after granulation.

[0060] The working process of the granulator of the present invention is as follows: The rubber plate to be processed is added into the frame 1 through the feed port. The rubber plate will first be cut into strips by the hob one 11, and then the rubber strips move backward under the cooperation of the conveying roller 14 and the pressing roller 15. When the rubber strips move to the position of the hob two 12, they can be rolled into particles by the rotating hob two 12.

[0061] While the second hob 12 rotates, the cloth roller 2 rotates synchronously, and at the same time, the end of the connecting rod 32 slides along the chute 33. When the material containing cavity 201 is not facing the tangency position of the cloth roller 2 and the second hob 12, the connecting rod 32 slides along the first arc-shaped groove 331. At this time, the cloth plate 31 is in the retracted state so that there is enough space in the material containing cavity 201 to receive talcum powder. When the material containing cavity 201 faces the blanking hole 411 provided on the material conveying cylinder 41, the talcum powder in the material conveying cylinder 41 falls into the material containing cavity 201 through the blanking hole 411. When the material containing cavity 201 faces the tangency position of the cloth roller 2 and the second hob 12, the connecting rod 32 enters the second arc-shaped groove 332 through the inclined groove 334. At this time, the cloth plate 31 will slide radially outward along the cloth roller 2, and send the talcum powder in the material containing cavity 201 into the blade gap on the second hob 12, so that the talcum powder is spread on the surface of the cut rubber particles to form an isolation layer on the particle surface, effectively preventing the particles from sticking to each other.

[0062] While the cloth roller 2 rotates, under the cooperation of the first guide block 24, the second guide block 25 and the first elastic member 26, the cloth roller 2 slides axially along the rotating shaft 23. Through the axial sliding of the cloth roller 2, the cloth plate 31 can be driven to laterally rub the rubber particles in the blade gap, realizing the separation between adjacent particles, so that the talcum powder can be fully filled into the particle gaps, ensuring the separation effect between the particles, and at the same time realizing the separation between the rubber particles and the second hob 12.

[0063] With the rotation of the second hob 12, the cut rubber particles will fall downward in a parabolic shape, then the particles will fall on the inclined movable plate 5 and slide downward, and finally fall into the blanking channel 17. During the axial sliding of the cloth roller 2, the movable plate 5 will swing up and down, vibrating and impacting the particles falling on the movable plate 5, breaking up the adhered particles, preventing the cut particles from sticking during the blanking process, and further ensuring the effective separation between the particles.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A granulator for rubber processing, comprising a frame, a first hob for slicing rubber strips, and a second hob for granulating rubber, characterized in that It further includes a spreading mechanism, which includes a cloth roller, a cloth piece, and a feeding piece; The cloth roller is rotatably arranged on the frame. A plurality of partition plates are evenly arranged along the circumferential direction on the outer peripheral side of the cloth roller. A material receiving cavity for accommodating talcum powder is formed between any two adjacent partition plates. The outer side of the partition plate can be tangent to the outer periphery of the second hob. The cloth roller and the second hob rotate synchronously and in opposite directions, so that during the granulation process, each material receiving cavity can correspond to the space formed between two adjacent cutting edges on the second hob; The cloth piece includes a plurality of cloth plates and a driving structure I. Each cloth plate is slidably located in the corresponding material receiving cavity along the radial direction of the cloth roller. The driving structure I is used to drive the cloth plate located in the material receiving cavity to slide along the radial direction of the cloth roller when the material receiving cavity faces the tangency position with the second hob; An installation frame is arranged between the first hob and the second hob. A cavity for installing the cloth roller is arranged in the installation frame. A rotating shaft is rotatably installed in the cavity. The cloth roller is slidably installed on the outer side of the rotating shaft along the axial direction of the rotating shaft, so that the cloth roller can rotate synchronously with the rotating shaft and can slide relative to the rotating shaft. A driving structure II is installed on the frame. The driving structure II is used to drive the cloth roller to slide relative to the rotating shaft; The driving structure I includes a connecting rod arranged at the end of the cloth plate and a chute arranged on the installation frame. Each cloth plate is slidably matched with the chute through the corresponding connecting rod. The chute includes an arc-shaped groove I and an arc-shaped groove II. Both the arc-shaped groove I and the arc-shaped groove II are arranged along the circumferential direction of the cloth roller. The distance between the arc-shaped groove I and the axis of the cloth roller is less than the distance between the arc-shaped groove II and the axis of the cloth roller. An inclined groove I is communicated between the inlet end of the arc-shaped groove I and the outlet end of the arc-shaped groove II. An inclined groove II is communicated between the outlet end of the arc-shaped groove I and the inlet end of the arc-shaped groove II; The feeding piece is arranged on the frame and is used to convey talcum powder into each material receiving cavity during the rotation of the cloth roller.

2. The pelletizer for rubber processing according to claim 1, characterized in that, A driving part I for driving the first hob to rotate and a driving part II for driving the second hob to rotate are arranged on the frame. The end of the rotating shaft rotates through the frame. The second hob is connected to the rotating shaft through a double-sided tooth synchronous belt, so that the second hob and the cloth roller can rotate synchronously and in opposite directions.

3. A pelletizer for rubber processing according to claim 1, characterized in that, The driving structure II includes a plurality of guide blocks I and a plurality of guide blocks II. The plurality of guide blocks I are installed on the installation frame at intervals along the circumferential direction of the cloth roller. The plurality of guide blocks II are installed on the end of the cloth roller facing the guide blocks I at intervals along the circumferential direction of the cloth roller. One end of each guide block I facing the cloth roller is provided with a first inclined surface, and the first inclined surface is inclined towards the direction close to the cloth roller along the rotation direction of the cloth roller. One end of each guide block II facing the guide block I is provided with a second inclined surface, and the second inclined surface is inclined towards the direction close to the cloth roller along the rotation direction of the cloth roller. An elastic part I for driving the cloth roller to reset is arranged between the end of the cloth roller and the installation frame.

4. A pelletizer for rubber processing according to claim 1, characterized in that, A conveying roller and a pressing roller are rotatably arranged on the frame. The conveying roller is arranged between the first hob and the second hob. The conveying roller and the pressing roller are arranged up and down, and there is a space for rubber to pass through between them. The ends of the conveying roller and the first hob are respectively connected with gears, and the two gears are meshed and driven.

5. A pelletizer for rubber processing according to claim 1, characterized in that, The feeding component includes a material conveying cylinder, a blanking hopper, a screw shaft and screw blades. The material conveying cylinder is arranged on the frame, and a plurality of blanking holes are provided on one side of the material conveying cylinder facing the cloth roller. The blanking hopper is installed on the frame, and the discharge port provided at the lower end of the blanking hopper communicates with the inside of the material conveying cylinder. The screw shaft is rotatably installed in the material conveying cylinder, and a third driving member for driving the screw shaft to rotate is provided on the frame. The screw blades are installed on the screw shaft.

6. A pelletizer for rubber processing according to claim 5, characterized in that, A third driving structure for driving the blanking holes to open or close is provided on the frame. The third driving structure includes a baffle plate and a push plate. The baffle plate is slidably installed on the mounting frame along the axial direction of the material conveying cylinder, and an elastic member II for driving the baffle plate to reset is provided between the baffle plate and the mounting frame. A through hole corresponding to the blanking hole is provided on the baffle plate. The push plate is installed on the baffle plate. When the cloth roller slides along its own axial direction, the end of the cloth roller can contact the push plate and push the baffle plate to move, so that the through hole is aligned or staggered with the blanking hole.

7. A pelletizer for rubber processing according to claim 1, characterized in that, An inclined blanking channel is provided below the second hob. A movable plate is provided between the second hob and the blanking channel. The movable plate is inclined and installed on the frame, and the inclined direction of the movable plate is opposite to the inclined direction of the blanking channel. One end of the movable plate is rotatably matched with the frame through a hinge shaft. A fourth driving structure is provided on the frame, and the fourth driving structure is used to drive the movable plate to swing around the hinge shaft.

8. A pelletizer for rubber processing according to claim 7, wherein, The fourth driving structure includes a driving rod. The driving rod is longitudinally slidably installed on the frame. The lower end of the driving rod is hinged to the end of the movable plate far from the hinge shaft. An inclined surface III is provided at the upper end of the driving rod. The inclined surface III is inclined downward and toward the direction close to the cloth roller. During the process of the cloth roller sliding along its own axial direction, the end of the cloth roller can contact the inclined surface III and drive the driving rod to move downward. An elastic member III for driving the driving rod to reset is provided between the driving rod and the mounting frame.

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