Raw material pretreatment pulverizer for production of epoxy molding compound

Abstract

The utility model particularly relates to a raw material pretreatment crusher for epoxy molding compound production, which comprises a shell and a base, the shell is fixedly arranged above the base, the raw material pretreatment crusher further comprises a crushing part, the crushing part comprises a crushing roller, fine crushing cutters and coarse crushing cutters are arranged on the crushing roller, the fine crushing cutters are arranged between the coarse crushing cutters, the fine crushing cutters are arranged along the crushing roller in a staggered manner, and the coarse crushing cutters are arranged on the crushing roller. Crushing the raw materials; the crushing chopping board is fixedly arranged on the inner wall of the shell, matched with the crushing part and used for crushing the raw materials; the scraper plate is fixedly arranged on the inner wall of the shell and is opposite to the crushing cutting board, and when the crushing part passes through the scraper plate, the scraper plate scrapes off the raw materials adhered to the crushing part; the fan is obliquely arranged in the base, and the fan blows air flow to the crushing part and is used for blowing away heat generated by friction between the raw materials and the crushing part; according to the utility model, the scraper plate is arranged, so that plastic adhered to the scraper is cleaned, shutdown cleaning is avoided, and coarse crushing and fine crushing are simultaneously carried out in the same space.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pulverizer technical field, concretely relates to a raw material pretreatment pulverizer for epoxy plastic package material production. BACKGROUND

[0002] The pulverizer is a mechanical device for crushing solid raw materials of large size to meet the size requirements, and impact force or shear force generated by high-speed impact is used to achieve the purpose of crushing. The epoxy plastic package material is a thermosetting chemical polymer material, which is mainly used for packaging semiconductors. Before the epoxy plastic package material enters the mold for forming, the large particles of the epoxy plastic package material need to be crushed into small particles to facilitate the subsequent forming process.

[0003] The existing pulverizer cannot separate the qualified raw materials from the unqualified raw materials after crushing the epoxy plastic package material, which may cause a low pass rate of the crushed raw materials.

[0004] After searching, the Chinese patent with the authorization announcement number CN216732533U discloses a raw material pretreatment pulverizer for epoxy plastic package material production, which belongs to the field of pulverizers. The raw material pretreatment pulverizer for epoxy plastic package material production includes a box body, a crushing cavity, and a screening cavity arranged in the box body from top to bottom, a vibrating screen arranged in the screening cavity, symmetrically arranged separation plates and limiting plates arranged below the vibrating screen, the separation plates arranged in an inclined manner, the vibrating screen arranged in a top-to-bottom through manner, and a guide plate arranged in the middle of the vibrating screen. The guide plate directly discharges the raw material particles meeting the crushing requirements to the directly below, the larger particles or impurities are discharged from the channel at the bottom of the vibrating screen along the inclined surface, effective shunting is achieved, contamination is prevented, the pass rate is effectively improved, and the large particles can be conveniently collected and crushed again.

[0005] The above-mentioned scheme solves the problem of difficult separation of the crushed raw materials to some extent, but still has the following problems:

[0006] The epoxy plastic package material generates heat due to friction during crushing, which may be adhered to the crushing knife, and the production efficiency is affected due to the need for shutdown and cleaning. UTILITY MODEL CONTENTS

[0007] To solve the problems in the prior art, the utility model provides a raw material pretreatment pulverizer for epoxy plastic package material production.

[0008] The technical scheme of the utility model is as follows:

[0009] A raw material pretreatment pulverizer for epoxy plastic package material production includes a shell and a base, the shell is fixedly arranged above the base, and further includes:

[0010] A crushing part is arranged inside the shell, the crushing part is driven to rotate by a motor, and is used for crushing raw materials.

[0011] A crushing anvil is fixedly arranged on the inner wall of the shell and cooperates with the crushing part to crush the raw material;

[0012] A scraper plate is fixedly arranged on the inner wall of the shell and is arranged opposite to the crushing anvil, and the scraper plate scrapes off the raw material adhered to the crushing part when the crushing part passes through the scraper plate;

[0013] A fan is obliquely arranged in the base, and the fan blows air flow to the crushing part to disperse the heat generated by the friction between the raw material and the crushing part.

[0014] Further, the crushing part comprises a crushing roller, the crushing roller is provided with fine crushing knives and coarse crushing knives, the coarse crushing knives are arranged in the form of claws to tear the raw material, and the fine crushing knives are arranged between the coarse crushing knives and staggered along the crushing roller to further crush the torn raw material.

[0015] Further, the fine crushing knives are provided with inclined blade parts which are obliquely arranged on the plane where the bottom surface of the fine crushing knife is located to slow down the impact force.

[0016] Further, the shell is provided with a feeding port and a feeding platform, an opening and closing door is arranged above the feeding port, the opening and closing door is connected to the shell through a hinge, the upper surface of the feeding platform is flush with the feeding port, the feeding platform is used to place the packaging bag of the raw material, and the opening and closing door is used to prevent the raw material from flying out of the feeding port during the crushing process.

[0017] Further, the shell is also provided with an observation window, a transparent plate mounting seat is fixedly arranged outside the observation window, a clamping groove is formed between the transparent plate mounting seat and the outer wall of the shell, and a transparent plate is installed in the clamping groove, the observation window is used to observe the working condition of the crushing roller.

[0018] Further, the device further comprises a driving part, the driving part comprises a motor, the motor is fixedly arranged on a motor fixing seat, the motor fixing seat is fixedly arranged on the base, the output end of the motor is fixedly connected to a driving pulley, the driving pulley is connected to a transmission pulley through a belt, the transmission pulley is in interference fit with a transmission shaft, the transmission shaft is in interference fit with the crushing roller, the transmission pulley drives the transmission shaft to rotate, thereby driving the crushing roller to rotate, and the diameter of the driving pulley is smaller than the diameter of the transmission pulley to reduce the angular velocity and increase the torque.

[0019] Further, the first sieve plate is arranged inside the shell and below the crushing roller, and the second sieve plate is arranged inside the base and below the first sieve plate, the first sieve plate is arranged in a semicircle, the first sieve plate is provided with coarse sieve holes, the second sieve plate is provided with fine sieve holes, the diameter of the fine sieve holes is smaller than that of the coarse sieve holes, and the second sieve plate is arranged in an inclination.

[0020] Further, the shell is provided with a sieve plate slot, the sieve plate slot is arranged in a semicircle, the sieve plate slot is arranged on both sides of the shell and is symmetrically distributed, the first sieve plate is movably arranged in the sieve plate slot, and the first sieve plate is in clearance fit with the sieve plate slot.

[0021] Further, one end of the first sieve plate is provided with a ball head, the ball head is arranged on the upper surface of the first sieve plate, a plurality of ball heads are arranged in a radial uniform distribution, the ball head is connected with a grooved wheel, the shaft side surface of the grooved wheel is provided with a spiral groove and an S groove, the S groove is in communication with the first end and the tail of the spiral groove, the ball head is tightly attached to the inside of the spiral groove and the S groove, the diameter of the ball head is equal to the width of the spiral groove and the S groove, and the grooved wheel rotates to drive the first sieve plate to move back and forth through the ball head, so that the coarse sieve holes are prevented from being blocked.

[0022] Further, the fan is fixedly arranged on the discharge plate, the discharge plate is arranged in an inclination inside the base, the discharge plate is arranged in parallel with the second sieve plate, the discharge plate is used for guiding the crushed epoxy plastics to slide out of the crusher, and the fan is used for blowing away the heat generated by the friction between the raw materials and the crushing part and preventing the first sieve plate and the second sieve plate from being blocked.

[0023] The utility model discloses reached the beneficial effects are as follows:

[0024] 1, the utility model discloses a scraper plate is set, and the plastic that sticks to the crushing knife is cleaned and scraped down by the scraper plate when coarse crushing knife and fine crushing knife pass through the scraper plate, and the machine is prevented from cleaning.

[0025] 2, the utility model discloses that coarse crushing knife and fine crushing knife are set, and the task is reasonably distributed, and the coarse crushing and fine crushing in the same space are realized simultaneously.

[0026] 3, the utility model discloses that the opening and closing door is set on the feeding port, prevents the plastic in the crushing space from being turned out, and the feeding platform is set, and feeding is facilitated.

[0027] 4, the utility model discloses that the observation window is set, and the condition in the crushing chamber is observed conveniently.

[0028] 5. The utility model discloses a bottom fan, which can prevent the filter plate from being blocked by high-speed airflow, blow off the heat generated by the friction between the raw materials and the crushing roller, and further prevent the plastic from adhering to the crushing knife.

[0029] 6. The utility model discloses a ball head is set up on the first sieve plate, and the ball head is matched with the groove on the notched wheel, moves left and right under the driving of the notched wheel to prevent the first sieve plate from being blocked, and the use of spring is saved, the impact generated by the spring is avoided, and movement is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the overall structure schematic diagram of the utility model.

[0031] Figure 2 It is the overall structure schematic diagram of another view of the utility model.

[0032] Figure 3 It is Figure 2 The local enlarged schematic diagram of A place in

[0033] Figure 4 It is the structure schematic diagram of the crushing part of the utility model after removing part shell.

[0034] Figure 5 It is the assembly schematic diagram of the sieve plate and the fan of the utility model.

[0035] Figure 6 It is the explosion schematic diagram of the notched wheel and the second sieve plate of the utility model.

[0036] Figure 7 It is the explosion schematic diagram of the second sieve plate and the shell of the utility model.

[0037] Figure 8 It is the explosion schematic diagram of the crushing part and the transmission pulley of the utility model.

[0038] Figure 9 It is the explosion schematic diagram of the crushing part of the utility model.

[0039] Figure 10 It is the structure schematic diagram of the fine crushing knife of the utility model.

[0040] In the figure, 1, shell; 101, feeding port; 102, observation window; 103, transparent plate mounting seat; 104, clamping groove; 105, sieve plate slot; 2, motor; 3, base; 4, motor fixing seat; 5, drive pulley; 6, transmission pulley; 7, transmission shaft; 8, belt; 9, feeding platform; 10, opening and closing door; 11, hinge; 12, second sieve plate; 1201, fine sieve hole; 13, transparent plate; 14, fine crushing knife; 1401, inclined blade part; 15, first sieve plate; 1501, ball head; 1502, coarse sieve hole; 16, coarse crushing knife; 17, scraper plate; 18, crushing roller; 19, crushing anvil plate; 20, grooved wheel; 2001, helical groove; 2002, S groove; 21, fan; 22, discharge plate. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that the terms "upper end", "lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices or elements indicated or implied to have a specific orientation, configuration and operation. Therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Please refer to Figures 1 to 10 The present application provides a technical scheme:

[0045] A raw material pretreatment pulverizer for epoxy plastic packaging material production, comprising a shell 1 and a base 3, the shell 1 is fixedly arranged above the base 3, further comprising:

[0046] A pulverizing part is arranged inside the shell 1, and is driven to rotate by the motor 2, for pulverizing raw materials;

[0047] A pulverizing anvil 19 is fixedly arranged on the inner wall of the shell 1, and cooperates with the pulverizing part, for pulverizing raw materials;

[0048] A scraper plate 17 is fixedly arranged on the inner wall of the shell 1, and is arranged opposite to the pulverizing anvil 19, and when the pulverizing part passes through the scraper plate 17, the scraper plate 17 scrapes off the raw materials adhered to the pulverizing part;

[0049] A fan 21 is obliquely arranged inside the base 3, and blows air flow to the pulverizing part, for blowing away the heat generated by the friction between the raw materials and the pulverizing part.

[0050] Specifically, as shown in Figure 8 , the pulverizing part comprises a pulverizing roller 18, and the pulverizing roller 18 is provided with fine pulverizing knives 14 and coarse pulverizing knives 16, the coarse pulverizing knives 16 are arranged in the form of claws, for tearing raw materials, and the fine pulverizing knives 14 are arranged between the coarse pulverizing knives 16, and the fine pulverizing knives 14 are staggered along the pulverizing roller 18, for further pulverizing the torn raw materials.

[0051] Specifically, the coarse pulverizing knives 16 and the fine pulverizing knives 14 are fastened to the pulverizing roller 18 by means of hexagon socket bolts.

[0052] Specifically, the scraper plate 17 and the pulverizing anvil 19 are fastened to the inner wall of the shell 1 by means of hexagon socket bolts.

[0053] Specifically, as shown in Figure 9 , the fine pulverizing knives 14 are provided with bevel blade parts 1401, and the bevel blade parts 1401 are obliquely arranged on the plane where the bottom surface of the fine pulverizing knives 14 is located, for reducing impact force.

[0054] Specifically, the inclination angle of the bevel blade parts 1401 is 15°-30°, and preferably 18°.

[0055] Specifically, as shown in Figure 1 and Figure 2 , the shell 1 is provided with a feeding port 101 and a feeding platform 9, the feeding port 101 is provided above with an opening and closing door 10, the opening and closing door 10 is connected to the shell 1 by means of a hinge 11, the upper surface of the feeding platform 9 is flush with the feeding port 101, the feeding platform 9 is used for placing the packaging bag of raw materials, and the opening and closing door 10 is used for preventing raw materials from flying out of the feeding port 101 during the pulverizing process.

[0056] Specifically, the opening and closing door 10 and the shell 1 can be closed by pin, buckle or magnetic attraction, etc. to prevent the impact of the shell 1 and the noise caused by the vibration of the opening and closing door during the working process of the crusher.

[0057] Specifically, as shown in Figure 2 and Figure 3 , the shell 1 is also provided with an observation window 102, and a transparent plate mounting seat 103 is fixedly arranged outside the observation window 102. The transparent plate mounting seat 103 and the outer wall of the shell 1 form a clamping groove 104, and a transparent plate 13 is installed in the clamping groove 104. The observation window 102 is used to observe the working condition of the crushing roller 18.

[0058] Specifically, the transparent plate mounting seat 103 is welded to the outer wall of the shell 1.

[0059] Specifically, the transparent plate 13 can be transparent acrylic or transparent glass, preferably transparent glass, to prevent the transparent plate 13 from being scratched and affecting observation.

[0060] Specifically, as shown in Figure 1 and Figure 2 , it also includes a driving part, the driving part includes a motor 2, the motor 2 is fixedly arranged on a motor fixing seat 4, the motor fixing seat 4 is fixedly arranged on the base 3, the output end of the motor 2 is fixedly connected with a driving pulley 5, the driving pulley 5 is connected with a transmission pulley 6 through a belt 8, the transmission pulley 6 is interference fit with a transmission shaft 7, the transmission shaft 7 is interference fit with the crushing roller 18, the transmission pulley 6 drives the transmission shaft 7 to rotate, thereby driving the crushing roller 18 to rotate, the diameter of the driving pulley 5 is smaller than the diameter of the transmission pulley, so as to reduce the angular velocity and increase the torque.

[0061] Specifically, the motor fixing seat 4 and the base 3 are connected by hexagonal head fastening bolts.

[0062] Specifically, the diameter ratio of the driving pulley 5 and the transmission pulley 6 is determined by the speed ratio of the motor 2 and the transmission pulley 6.

[0063] Specifically, as shown in Figure 2 and Figure 4 , it also includes a first sieve plate 15 and a second sieve plate 12, the first sieve plate 15 is arranged inside the shell 1 and below the crushing roller 18, the second sieve plate 12 is arranged inside the base 3 and below the first sieve plate 15, the first sieve plate 15 is arranged in a semicircular shape, the first sieve plate 15 is provided with coarse sieve holes 1502, the second sieve plate 12 is provided with fine sieve holes 1201, the diameter of the fine sieve holes 1201 is smaller than the diameter of the coarse sieve holes 1502, and the second sieve plate 12 is arranged obliquely.

[0064] Specifically, as shown in Figure 7 , the shell 1 is provided with a sieve plate slot 105, the sieve plate slot 105 is semi-circular, the sieve plate slot is provided on both sides of the shell 1, and the first sieve plate 15 is movably arranged in the sieve plate slot 105.

[0065] Specifically, as shown in Figure 6 , one end of the first sieve plate 15 is provided with a ball head 1501, the ball head 1501 is arranged on the upper surface of the first sieve plate 15, the number of the ball head 1501 is multiple, and the ball head 1501 is uniformly distributed in the radial direction, the ball head 1501 is connected with a groove wheel 20, the shaft side of the groove wheel 20 is provided with a spiral groove 2001 and an S groove 2002, the S groove 2002 connects the head and tail of the spiral groove 2001, the ball head 1501 is tightly attached to the inside of the spiral groove 2001 and the S groove 2002, the diameter of the ball head 1501 is equal to the width of the spiral groove 2001 and the S groove 2002, and the groove wheel 20 rotates to drive the first sieve plate 15 to move back and forth through the ball head 1501, which is used to prevent the coarse sieve hole 1502 from being blocked.

[0066] Specifically, the number of the ball head 1501 is preferably 3, and the interval angle is 90°.

[0067] Specifically, as shown in Figure 5 , the fan 21 is fixedly arranged on the discharge plate 22, the discharge plate 22 is obliquely arranged in the base 3, the discharge plate 22 is parallel to the second sieve plate 12, the discharge plate 22 is used to guide the crushed epoxy plastic to slide out of the crusher, and the fan 21 is used to blow away the heat generated by the friction between the raw materials and the crushing part and prevent the first sieve plate 15 and the second sieve plate 12 from being blocked.

[0068] Specifically, the inclination range of the discharge plate 22 and the second sieve plate 12 is 30°-45°, and preferably 32°, so as to ensure smooth sliding of the discharge.

[0069] In use, the related technicians put the epoxy plastic sealing material into the pulverizer through the feeding opening 101, then close the opening and closing door 10, start the motor 2, and the epoxy plastic sealing material is torn by the coarse pulverizing knife 16 under the action of the pulverizing roller 18 and the pulverizing anvil 19, the torn coarse material is further pulverized by the fine pulverizing knife 14, the pulverized fine material falls on the discharge plate 22 through the first sieve plate 15 and the second sieve plate 12, and then slides out of the pulverizer and is stacked on the ground, wherein the fine material that does not meet the condition, that is, the diameter of the fine material is less than the coarse sieve hole 1502 but greater than the fine sieve hole 1201, is stacked on the ground above the second sieve plate 12, and the related technicians collect the part of the unqualified fine material and re-put it into the pulverizer for further pulverization.

[0070] In the embodiment, the first sieve plate 15 moves back and forth in the sieve plate slot 105 through the action of the groove wheel 20 and the first sieve plate 15, and the vibration generated by the back and forth movement avoids the blockage of the coarse sieve hole 1502, and the movement is stable.

[0071] In the embodiment, since the first sieve plate 15 and the shell 1 are matched through the sieve plate slot 105 gap, when the first sieve plate 15 needs to be cleaned, the first sieve plate 15 only needs to be pulled out, inserted after cleaning, and the ball head 1501 is aligned with the spiral groove 2001 and the S-shaped groove 2002 on the groove wheel 20, so that the pulverizing roller 18 does not need to be disassembled.

[0072] In the embodiment, the fan 21 is arranged on the discharge plate 22, the fan 21 blows high-speed airflow, further avoids the blockage of the first sieve plate 15 and the second sieve plate 12, and also carries away part of the heat generated by friction, further preventing the epoxy plastic sealing material from being adhered to the pulverizing roller 18.

[0073] The part not described in the embodiment is the prior art or known technology.

[0074] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0075] The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material pretreatment pulverizer for epoxy encapsulant production, comprising a shell (1) and a base (3), the shell (1) is fixed above the base (3), characterized in that: Also include: The crushing part is arranged inside the shell (1), the motor (2) drives the crushing part to rotate, which is used for crushing raw materials; The crushing anvil (19) is fixedly arranged on the inner wall of the shell (1), cooperates with the crushing part, and is used for crushing raw materials; The scraper plate (17) is fixedly arranged on the inner wall of the shell (1), is arranged opposite to the crushing anvil (19), and the scraper plate (17) scrapes off the raw materials adhered on the crushing part when the crushing part passes through the scraper plate (17); The fan (21) is inclinedly arranged inside the base (3), the fan (21) blows air flow to the crushing part, which is used for blowing away the heat generated by the friction between the raw materials and the crushing part.

2. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 1, characterized in that: The crushing part includes a crushing roller (18), the crushing roller (18) is provided with fine crushing knives (14) and coarse crushing knives (16), the coarse crushing knives (16) are arranged in the form of claws and are used for tearing raw materials, and the fine crushing knives (14) are arranged between the coarse crushing knives (16) and are staggered along the crushing roller (18) and are used for further crushing the torn raw materials.

3. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 2, characterized in that: The fine crushing knives (14) are provided with inclined blade parts (1401), the inclined blade parts (1401) are arranged obliquely on the plane where the bottom surface of the fine crushing knives (14) is located, and are used for reducing the impact force.

4. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 1, characterized in that: The shell (1) is provided with a feeding port (101) and a feeding platform (9), the feeding port (101) is provided with an opening and closing door (10) above, the opening and closing door (10) is connected with the shell (1) through a hinge (11), the upper surface of the feeding platform (9) is flush with the feeding port (101), the feeding platform (9) is used for placing the packaging bag of raw materials, and the opening and closing door (10) is used for preventing the raw materials from flying out of the feeding port (101) in the crushing process.

5. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 4, characterized in that: The shell (1) is also provided with an observation window (102), the observation window (102) is fixedly provided with a transparent plate mounting seat (103) outside, a clamping groove (104) is formed between the transparent plate mounting seat (103) and the outer wall of the shell (1), a transparent plate (13) is installed in the clamping groove (104), and the observation window (102) is used for observing the working condition of the crushing roller (18).

6. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 1, characterized in that: Also include a driving part, the driving part includes a motor (2), the motor (2) is fixedly arranged on a motor fixing seat (4), the motor fixing seat (4) is fixedly arranged on the base (3), the output end of the motor (2) is fixedly connected with a driving belt pulley (5), the driving belt pulley (5) is connected with a transmission belt pulley (6) through a belt (8), the transmission belt pulley (6) is in interference fit with a transmission shaft (7), the transmission shaft (7) is in interference fit with the crushing roller (18), the transmission belt pulley (6) drives the transmission shaft (7) to rotate, thereby driving the crushing roller (18) to rotate, and the diameter of the driving belt pulley (5) is smaller than that of the transmission belt pulley, so as to increase the torque.

7. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 1, characterized in that: Also include a first sieve plate (15) and a second sieve plate (12), the first sieve plate (15) is arranged inside the shell (1), arranged below the crushing roller (18), the second sieve plate (12) is arranged inside the base (3), arranged below the first sieve plate (15), the first sieve plate (15) is arranged in a semicircle, the first sieve plate (15) is provided with coarse sieve hole (1502), the second sieve plate (12) is provided with fine sieve hole (1201), the diameter of the fine sieve hole (1201) is smaller than the diameter of the coarse sieve hole (1502), the second sieve plate (12) is arranged obliquely.

8. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 7, characterized in that: The shell (1) is provided with sieve plate slot (105), the sieve plate slot (105) is arranged in a semicircle, the sieve plate slot (105) is arranged on both sides of the shell (1), which is symmetrically distributed, the first sieve plate (15) is movably arranged in the sieve plate slot (105), and the first sieve plate (15) and the sieve plate slot (105) are gap fit.

9. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 7, characterized in that: One end of the first sieve plate (15) is provided with a ball head (1501), the ball head (1501) is arranged on the upper surface of the first sieve plate (15), the ball head (1501) is arranged in a plurality of radial uniform distribution, the ball head (1501) and the groove wheel (20) are connected, the shaft side of the groove wheel (20) is provided with helical groove (2001) and S groove (2002), the S groove (2002) connects the head and tail of the helical groove (2001), the ball head (1501) is tightly attached to the inside of the helical groove (2001) and the S groove (2002), the diameter of the ball head (1501) is equal to the width of the helical groove (2001) and the S groove (2002), the groove wheel (20) rotates to drive the first sieve plate (15) to move back and forth through the ball head (1501), which is used to prevent the coarse sieve hole (1502) from being blocked.

10. The raw material pretreatment pulverizer for producing epoxy encapsulating material, according to claim 1, characterized in that: The fan (21) is fixedly arranged on the discharge plate (22), the discharge plate (22) is arranged obliquely inside the base (3), the discharge plate (22) is arranged in parallel with the second sieve plate (12), the discharge plate (22) is used to guide the crushed epoxy plastic to slide out of the crusher, and the fan (21) is used to blow away the heat generated by the friction between the raw materials and the crushing part and prevent the first sieve plate (15) and the second sieve plate (12) from being blocked.

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