Production equipment for plastic particles

Abstract

The invention belongs to the technical field of plastic particle production, and particularly relates to plastic particle production equipment which comprises a machining table, an L-shaped supporting plate is fixedly connected to the upper end of the machining table, a swing plate is hinged to the lower end of the L-shaped supporting plate, a rotating cylinder is rotationally installed on the swing plate, and a cutting ring body is fixedly connected to the rotating cylinder; and the scraping assembly comprises a fixed ring body fixedly connected to the side wall of the swing plate, a lifting block is vertically and slidably connected to the upper portion of the fixed ring body, two connecting rods are hinged to the lower portion of the lifting block, and rotating rods are rotationally connected to the bottom ends of the two connecting rods. According to the plastic particle cutting device, by arranging the scraping assembly, plastic raw materials adhering to the surface of the cutting ring body can be scraped into a fan-shaped area formed by a moving block and two scraping rods, the plastic raw materials gathered in the fan-shaped area are scraped off from the surface of the cutting ring body, the plastic particle cutting effect is improved, and meanwhile the service life of the cutting ring body is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of plastic particle production, and particularly relates to a plastic particle production device. BACKGROUND

[0002] The plastic particle production device is mainly used for converting plastic raw materials into small particles, which can be used in subsequent processes such as injection molding, extrusion and blow molding, and is widely used in various industrial and consumer product fields. In the production process of plastic particles, first of all, the raw plastic (usually plastic resin) needs to be fed into a heated extruder, then the plastic resin is melted into a uniform melt through heating and stirring, then the melt is extruded into a specific shape of a long strip through the die of the extruder, and after the long strip-shaped plastic is cooled and cut into small particles, the particles are finally dried, screened and packaged.

[0003] Chinese patent No. CN116061331 B discloses a plastic particle processing device for plastic production. It comprises an angle adjusting mechanism, a fence scraping mechanism, a stirring driving mechanism, a bevel gear ring, a scattering piece and a stirring mechanism. The fence scraping mechanism is arranged on the angle adjusting mechanism, and the stirring driving mechanism is arranged on the fence scraping mechanism. The plastic particles agglomerated into a group can be scattered, and the drying efficiency is improved.

[0004] However, the above processing device still needs to use a traditional rotary blade to cut the long strip-shaped plastic when cutting the long strip-shaped plastic, and therefore the following technical problems often exist:

[0005] 1. When the rotary blade cuts the long strip-shaped plastic, the raw material inside the long strip-shaped plastic is easy to adhere to the rotary blade, thereby affecting the cutting effect of the blade, leading to inconsistent particle size, and increasing the wear of the blade and shortening the service life of the blade;

[0006] 2. During the cutting process, the friction between the rotary blade and the long strip-shaped plastic causes the temperature of the blade to continuously rise, thereby causing the cut particles to have a high temperature and deform or degrade, further reducing the cutting effect of the plastic particles. SUMMARY

[0007] The purpose of the present application is to solve the problems in the background art, and to provide a plastic particle production device capable of scraping the plastic raw material adhered to the surface of the cutting ring body into the fan-shaped area formed by the moving block and the two scraping rods, and scraping the plastic raw material gathered in the fan-shaped area from the surface of the cutting ring body.

[0008] To achieve the above purpose, the present application adopts the following technical scheme:

[0009] A plastic particle production device comprises:

[0010] The upper end of the processing table is fixedly connected with an L-shaped support plate, the lower end of the L-shaped support plate is hingedly connected with a swing plate, a rotating drum is rotatably installed on the swing plate, and a cutting ring body is fixedly connected to the rotating drum;

[0011] The scraping assembly comprises a fixed ring body fixedly connected to the side wall of the swing plate, a lifting block vertically slidably connected above the fixed ring body, two connecting rods hingedly connected below the lifting block, rotating rods rotatably connected to the bottom ends of the two connecting rods, arc-shaped blocks fixedly connected to the two rotating rods, scraping rods fixedly connected to the side walls of the two arc-shaped blocks and matched with the cutting ring body, arc-shaped grooves formed in the side walls of the fixed ring body, the two arc-shaped blocks respectively slidably connected in the two arc-shaped grooves, and moving blocks vertically slidably connected to the bottom of the fixed ring body.

[0012] Preferably, the limiting assembly comprises an L-shaped hollow groove formed in the arc-shaped block, a wedge-shaped block slidably connected in the L-shaped hollow groove, and the wedge-shaped block extending out of the arc-shaped block, a first spring fixedly connected in the L-shaped hollow groove, a pulling block fixedly connected to the other end of the first spring, a side groove formed in the inner wall of each arc-shaped groove, a limiting block slidably connected to the side wall of each arc-shaped block and matched with the side groove, a traction rope connected between the limiting block and the corresponding pulling block, and an insertion slot formed in the moving block and matched with the wedge-shaped block.

[0013] Preferably, the cooling assembly is further arranged to continuously circulate the cooling liquid in the cutting ring body during the scraping work, the cooling assembly comprises a suction groove formed in the fixed ring body, a piston block sealingly slidably connected in the suction groove, a pulling rod fixedly connected between the piston block and the moving block, a second spring arranged between the piston block and the inner wall of the suction groove, a plurality of through holes formed in the circumferential wall of the rotating drum and communicated with the suction groove and the inside of the rotating drum, the plurality of through holes being arrayed on the circumferential wall of the rotating drum, and a cooling box fixedly connected to the upper end of the processing table and used for replacing and cooling the cooling liquid.

[0014] Preferably, the rotating drum is respectively communicated with an inlet hose and a discharge hose at two ends, the inlet hose and the discharge hose are respectively communicated with the input port and the output port of the cooling box, and the positions of the rotating drum located on both sides of the suction groove are respectively provided with a one-way valve.

[0015] Preferably, a swing assembly is further included for driving the cutting ring body to swing back and forth, the swing assembly comprising a first gear fixedly connected to the swing plate rotating shaft, the lower end of the L-shaped support plate being slidably connected with a first rack, the first rack and the first gear being in mesh with each other, and the lower end of the L-shaped support plate being fixedly connected with a hydraulic cylinder for driving the first rack.

[0016] Preferably, a transmission assembly is further included for driving the scraping assembly to work while the cutting ring body swings back and forth, the transmission assembly being rotatably connected to a transmission rod on the side wall of the swing plate, the transmission rod being fixedly connected with a second gear, the side wall of the swing plate being slidably connected with a second rack, the second rack and the second gear being in mesh with each other, and a fixed rod being fixedly connected between the second rack and the lifting block, the side wall of the swing plate being fixedly connected with a transmission ring body, the transmission ring body and the transmission rod being both fixedly connected with synchronous wheels, a synchronous belt being sleeved between the two synchronous wheels, the transmission ring body being fixedly connected with a third gear, the lower end of the L-shaped support plate being fixedly connected with a first arc-shaped tooth groove and a second arc-shaped tooth groove, the first arc-shaped tooth groove and the second arc-shaped tooth groove being in mesh with the two sides of the third gear, respectively.

[0017] Preferably, the radius of the synchronous wheel on the transmission ring body is greater than the radius of the synchronous wheel on the transmission rod.

[0018] Preferably, a cutting assembly is further included for driving the cutting ring body to rotate and cutting the molten plastic strip into plastic particles, the cutting assembly comprising a gear ring fixedly connected to the rotating drum, and a motor fixedly connected to the side wall of the swing plate away from the cutting ring body, the output end of the motor being fixedly connected with a fourth gear, the fourth gear and the gear ring being in mesh with each other.

[0019] Compared with the prior art, the plastic particle production equipment has the following advantages:

[0020] 1. The scraping assembly is arranged, the lifting block is periodically lifted and lowered during cutting, the plastic raw material adhered to the surface of the cutting ring body is scraped into the fan-shaped area formed by the lifting block and the two scraping rods when the lifting block is lowered, and the plastic raw material gathered in the fan-shaped area is scraped off from the surface of the cutting ring body when the lifting block continues to be lowered, so that the cutting ring body is periodically cleaned automatically during cutting, the plastic raw material adhered to the surface of the cutting ring body is avoided, the cutting effect on the plastic particles is improved, and the service life of the cutting ring body is prolonged.

[0021] 2. The present invention sets a cooling assembly. Since the moving block of the cutting ring body will be pulled downward reciprocatingly during the cleaning process, and the piston block can be reciprocated upward and reset under the elastic force of the second spring, the reciprocating vertical displacement of the piston block can realize the circulation of the coolant in the rotating drum, the drain hose, the cooling box and the drain hose, thereby realizing the cooling treatment of the cutting ring body. The circulating coolant can greatly improve the cooling effect of the cutting ring body, thereby avoiding the deformation or degradation of the plastic particles caused by the excessive temperature of the cutting ring body.

[0022] 3. The present invention provides a swinging assembly. During cutting, the hydraulic cylinder can drive the first gear to slide back and forth horizontally. Under the action of the first gear, the swinging plate and the cutting ring body are driven to swing back and forth, so that there is a time interval between the cutting work of the cutting ring body, ensuring that the cleaning work of the cutting ring body can be carried out within this time interval. At the same time, the swinging of the cutting ring body can throw out the plastic particles and plastic raw materials adhered to its surface through the action of centrifugal force, further improving the cutting effect of the cutting ring body on the plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the local structure of the scraping component in the present invention;

[0025] Figure 3 It is a schematic cross-sectional view of the position limiting component in the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0028] Figure 6 It is a cross-sectional view of the arc block in the present invention;

[0029] Figure 7 It is a schematic diagram of the local structure of the transmission component in the present invention.

[0030] In the figure, 1, processing table; 11, L-shaped support plate; 12, swing plate; 13, rotating drum; 14, cutting ring body; 2, scraping assembly; 21, fixed ring body; 22, lifting block; 23, connecting rod; 24, rotating rod; 25, arc block; 26, scraping rod; 27, arc-shaped groove; 28, moving block; 3, limiting assembly; 31, L-shaped slot; 32, wedge block; 33, first spring; 34, pull block; 35, side groove; 36, limiting block; 37, traction rope; 38, insertion slot; 4, cooling assembly; 41, suction groove; 42, piston block; 43, pull rod; 44, second spring; 45, through hole; 46, cooling box; 47, liquid inlet hose; 48, liquid outlet hose; 5, swing assembly; 51, first gear; 52, first rack; 53, hydraulic cylinder; 6, transmission assembly; 61, transmission rod; 62, second gear; 63, second rack; 64, fixed rod; 65, transmission ring body; 66, synchronous wheel; 67, synchronous belt; 68, third gear; 69, first arc-shaped gear slot; 610, second arc-shaped gear slot; 7, cutting assembly; 71, gear ring; 72, motor; 73, fourth gear. DETAILED DESCRIPTION

[0031] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0032] Example: Reference Figures 1 to 7 A plastic particle production device, comprising:

[0033] The processing table 1, the upper end of the processing table 1 is fixedly connected with the L-shaped support plate 11, the lower end of the L-shaped support plate 11 is hingedly connected with the swing plate 12, the swing plate 12 is rotatably installed with the rotating drum 13, and the rotating drum 13 is fixedly connected with the cutting ring body 14;

[0034] The scraping assembly 2 comprises a fixed ring body 21 fixedly connected to the side wall of the swing plate 12, a lifting block 22 vertically slidably connected above the fixed ring body 21, two connecting rods 23 hingedly connected below the lifting block 22, rotating rods 24 rotatably connected at the bottom ends of the two connecting rods 23, arc blocks 25 fixedly connected to the two rotating rods 24, scraping rods 26 fixedly connected to the side walls of the two arc blocks 25 and abutting against the cutting ring body 14, arc-shaped grooves 27 formed in the two side walls of the fixed ring body 21, the two arc blocks 25 being slidably connected in the two arc-shaped grooves 27 respectively, and a moving block 28 vertically slidably connected to the bottom of the fixed ring body 21, wherein a limiting assembly 3 is arranged between the two arc blocks 25 and the moving block 28, and the two moving blocks 28 are circumferentially slid to contact the moving block 28 to drive the moving block 28 to displace downward through the limiting assembly 3.

[0035] The limiting assembly 3 comprises an L-shaped hollow groove 31 formed in the arc-shaped block 25, a wedge-shaped block 32 slidably connected in the L-shaped hollow groove 31, a first spring 33 fixedly connected in the L-shaped hollow groove 31, a pull block 34 fixedly connected to the other end of the first spring 33, a side groove 35 formed in the inner wall of each arc-shaped groove 27, a limiting block 36 slidably connected to the side wall of each arc-shaped block 25, a traction rope 37 connected between the limiting block 36 and the corresponding pull block 34, and an insertion groove 38 formed in the moving block 28 and matched with the wedge-shaped block 32.

[0036] In the prior art, when the rotating blade cuts the long strip-shaped plastic, the raw material inside the long strip-shaped plastic is easy to stick to the rotating blade, thereby affecting the cutting effect of the blade, leading to inconsistent particle size, and increasing the wear of the blade and shortening the service life of the blade. The present application sets the scraping assembly 2 to periodically lift and lower the lifting block 22 during cutting. When the lifting block 22 is lowered, the two arc-shaped blocks 25 are driven to slide along the two sides of the fixed ring body 21 through the connecting rod 23, driving the scraping rods 26 to move in a circle along the surface of the cutting ring body 14, scraping the plastic raw material adhered to the surface of the cutting ring body 14 into the fan-shaped area formed by the moving block 28 and the two scraping rods 26. Then, the continuous downward movement of the lifting block 22 pulls the moving block 28 to move downward synchronously, so that the fan-shaped area moves away from the surface of the cutting ring body 14, and the plastic raw material gathered inside is scraped off from the surface of the cutting ring body 14. Thus, the cutting ring body 14 is periodically cleaned automatically during the cutting process, avoiding the adhesion of plastic raw material on its surface, improving the cutting effect of plastic particles, and increasing the service life of the cutting ring body 14. During the above working process, the movement process of the two arc-shaped blocks 25 and the scraping rods 26 is as follows:

[0037] In the initial stage of the downward movement of the lifting block 22, the two arc-shaped blocks 25 are pushed to slide in the inner wall of the arc-shaped groove 27 through the connecting rod 23, so that the arc-shaped block 25 drives the scraping rod 26 to move in a circle along the surface of the cutting ring body 14. After the wedge-shaped block 32 on the arc-shaped block 25 moves into the insertion groove 38, the inner wall of the insertion groove 38 will extrude and push the wedge-shaped block 32, so that the wedge-shaped block 32 pushes the pull block 34 to move in the L-shaped hollow groove 31, and then the limiting block 36 on the side wall of the arc-shaped block 25 is pulled back through the traction rope 37, so that the side groove 35 no longer limits the arc-shaped block 25. At this time, the arc-shaped block 25 can be separated from the arc-shaped groove 27, and the moving block 28 is pulled downward, so that the fan-shaped area formed between the two scraping rods 26 and the moving block 28 moves downward after the scraping rod 26 scrapes the cutting ring body 14. It is worth mentioning that an elastic assembly for resetting the wedge-shaped block 32 and the limiting block 36 can be arranged in the arc-shaped block 25. The elastic assembly can use a common extension spring, which will not be described in detail here.

[0038] The cooling assembly 4 is further arranged to circulate the cooling liquid in the cutting ring body 14 during the scraping operation, and the cooling assembly 4 comprises a suction groove 41 arranged in the fixed ring body 21, a piston block 42 sealingly and slidably connected in the suction groove 41, a pull rod 43 fixedly connected between the piston block 42 and the moving block 28, a second spring 44 arranged between the piston block 42 and the inner wall of the suction groove 41, a plurality of through holes 45 arranged on the peripheral wall of the rotating drum 13 and communicated with the inside of the rotating drum 13, a cooling box 46 fixedly connected to the upper end of the machining table 1, a liquid inlet hose 47 and a liquid outlet hose 48 respectively communicated with the input port and the output port of the cooling box 46, and a one-way valve arranged at the position of the rotating drum 13 on both sides of the suction groove 41.

[0039] The one-way valve is arranged to allow the piston block 42 to reciprocate in the suction groove 41 only to suck the cooling liquid on one side of the rotating drum 13 into the suction groove 41 and to discharge the cooling liquid in the suction groove 41 to the other side of the rotating drum 13.

[0040] The plurality of through holes 45 are arranged in an array on the peripheral wall of the rotating drum 13 to ensure that the suction groove 41 can suck the cooling liquid in the rotating drum 13 into the suction groove 41 and discharge the cooling liquid in the suction groove 41 back into the rotating drum 13 when the cutting ring body 14 is rotated to any angle.

[0041] The cooling assembly 4 is arranged to circulate the cooling liquid in the rotating drum 13, the liquid outlet hose 48, the cooling box 46 and the liquid outlet hose 48, and to cool the cutting ring body 14. The circulating cooling liquid can greatly improve the cooling effect of the cutting ring body 14, thereby avoiding deformation or degradation of the plastic particles caused by the high temperature of the cutting ring body 14.

[0042] Further comprising a swinging assembly 5 for driving the cutting ring body 14 to swing back and forth, the swinging assembly 5 comprises a first gear 51 fixedly connected to the rotating shaft of the swinging plate 12, the lower end of the L-shaped support plate 11 is horizontally slidably connected with a first rack 52, the first rack 52 is in mesh with the first gear 51, and the lower end of the L-shaped support plate 11 is fixedly connected with a hydraulic cylinder 53 for driving the first rack 52.

[0043] In addition, through the swinging assembly 5, the first rack 52 is driven by the hydraulic cylinder 53 to slide back and forth horizontally during cutting, and the swinging plate 12 and the cutting ring body 14 are driven to swing back and forth under the action of the first gear 51, so that the cutting work of the cutting ring body 14 exists in a time interval, ensuring that the cleaning work of the cutting ring body 14 can be carried out in this time interval, and at the same time, the swinging of the cutting ring body 14 can throw the plastic particles and plastic raw materials adhered to the surface of the cutting ring body 14 out through the action of centrifugal force, further improving the cutting effect of the cutting ring body 14 on the plastic particles.

[0044] At the same time, a feeding assembly can be arranged above the processing table 1, comprising a cylinder and a push plate, for pushing the long strip of plastic into the lower part of the cutting ring body 14, and the cutting ring body 14 swings to the bottom for cutting after the feeding work is completed, ensuring continuous cutting of the long strip of plastic.

[0045] Further comprising a transmission assembly 6 for driving the scraping assembly 2 to work while the cutting ring body 14 swings back and forth, the transmission assembly 6 is rotatably connected to a transmission rod 61 on the side wall of the swinging plate 12, the transmission rod 61 is fixedly connected with a second gear 62, the side wall of the swinging plate 12 is slidably connected with a second rack 63, the second rack 63 is in mesh with the second gear 62, and the second rack 63 is fixedly connected with a fixed rod 64 between the lifting block 22, the side wall of the swinging plate 12 is fixedly connected with a transmission ring body 65, the transmission ring body 65 and the transmission rod 61 are both fixedly connected with a synchronous wheel 66, a synchronous belt 67 is sleeved between the two synchronous wheels 66, the transmission ring body 65 is fixedly connected with a third gear 68, the lower end of the L-shaped support plate 11 is fixedly connected with a first arc-shaped tooth groove 69 and a second arc-shaped tooth groove 610, and the first arc-shaped tooth groove 69 and the second arc-shaped tooth groove 610 are respectively in mesh with the two sides of the third gear 68.

[0046] Among them, the radius of the synchronous wheel 66 on the transmission ring body 65 is greater than the radius of the synchronous wheel 66 on the transmission rod 61, so as to ensure that the transmission ring body 65 can drive the transmission rod 61 to rotate enough turns when rotating through the synchronous wheel 66 and the synchronous belt 67, so as to drive the second rack 63 and the lifting block 22 to move vertically enough distance through the second gear 62, ensuring the work of the scraping assembly 2.

[0047] It should be noted that, in the reciprocating swing of the swing plate 12, the third gear 68 on the transmission ring body 65 selectively engages with the first arc-shaped tooth groove 69 and the second arc-shaped tooth groove 610, so that the transmission ring body 65 periodically rotates in the opposite direction, further drives the transmission rod 61 to rotate through the synchronous wheel and the synchronous belt 67, and the transmission rod 61 drives the lifting block 22 to move through the second gear 62 and the second rack 63, so that the scraping assembly 2 can work synchronously with the swing assembly 5, without the need to set an additional driving source, saving processing cost and improving work efficiency.

[0048] Further comprising a cutting assembly 7 for driving the cutting ring body 14 to rotate to cut the molten plastic strip into plastic particles, comprising a tooth ring 71 fixedly connected to the rotating drum 13, a motor 72 fixedly connected to the side wall of the swing plate 12 away from the cutting ring body 14, and a fourth gear 73 fixedly connected to the output end of the motor 72, the fourth gear 73 and the tooth ring 71 are engaged with each other.

[0049] It should be noted that, in the process of driving the cutting ring body 14 to rotate for cutting, the rotating drum 13 does not affect the circulation of the cooling liquid in the rotating drum 13.

[0050] The function principle of the present application can be described as follows:

[0051] In the cutting process, the fourth gear 73 is driven to rotate by the motor 72, and the rotating drum 13 is further driven to rotate by the tooth ring 71, so that the rotating drum 13 drives the cutting ring body 14 to rotate for cutting, the first rack 52 is driven to reciprocate horizontally by the hydraulic cylinder 53, and the swing plate 12 and the cutting ring body 14 are driven to reciprocate by the first gear 51, the plastic particles and the plastic raw materials adhered to the surface of the cutting ring body 14 are thrown out by the centrifugal force, and the plastic strip is pushed to the lower side of the cutting ring body 14 by the feeding assembly arranged above the processing table 1 during the cutting interval.

[0052] In the cutting process, the reciprocating swing of the swing plate 12 drives the lifting block 22 to periodically move up and down under the action of the transmission assembly 6, when the lifting block 22 moves down, the two arc-shaped blocks 25 are driven to slide along the two sides of the fixed ring body 21 by the connecting rod 23, the scraping rod 26 is driven to move along the surface of the cutting ring body 14 in a circular motion, the plastic raw materials adhered to the surface of the cutting ring body 14 are scraped into the fan-shaped area formed by the moving block 28 and the two scraping rods 26, and then the moving block 28 is pulled to move down synchronously as the lifting block 22 continues to move down, so that the fan-shaped area moves away from the surface of the cutting ring body 14, and the plastic raw materials gathered in the fan-shaped area are scraped from the surface of the cutting ring body 14.

[0053] Since the cutting ring body 14 is pulled down reciprocatingly during the cleaning process, the moving block 28 will be pulled down reciprocatingly, the piston block 42 in the suction groove 41 can be pulled down reciprocatingly by the pull rod 43, and the piston block 42 is reset upward reciprocatingly under the elastic force of the second spring 44, through the reciprocating vertical displacement of the piston block 42, the circulation flow of the cooling liquid in the rotating drum 13, the drainage hose 48, the cooling box 46 and the drainage hose 48 is realized, and the cooling treatment for the cutting ring body 14 is realized.

[0054] The above only is the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A production equipment for plastic particles, characterized in that: include: A processing table (1), wherein the upper end of the processing table (1) is fixedly connected to an L-shaped support plate (11), the lower end of the L-shaped support plate (11) is hinged to a swing plate (12), a rotating drum (13) is rotatably mounted on the swing plate (12), and a cutting ring body (14) is fixedly connected to the rotating drum (13); The scraping assembly (2) comprises a fixed ring body (21) fixedly connected to the side wall of the swing plate (12), a lifting block (22) is vertically slidably connected above the fixed ring body (21), two connecting rods (23) are hinged below the lifting block (22), the bottom ends of the two connecting rods (23) are rotatably connected to a rotating rod (24), the two rotating rods (24) are fixedly connected to an arc block (25), and the side walls of the two arc blocks (25) are fixedly connected to the cutting ring body (14). The scraping rod (26) is fitted, and arc grooves (27) are provided on both side walls of the fixed ring body (21). The two arc blocks (25) are respectively slidably connected in the two arc grooves (27). The bottom of the fixed ring body (21) is vertically slidably connected with a moving block (28). A limiting assembly (3) is provided between the two arc blocks (25) and the moving block (28). The two moving blocks (28) slide circumferentially until they contact the moving block (28) and drive the moving block (28) to move downward through the limiting assembly (3).

2. The production equipment of plastic particles according to claim 1, characterized in that: The limiting assembly (3) includes an L-shaped slot (31) provided inside the arc block (25), a wedge block (32) is slidably connected to the L-shaped slot (31), and the wedge block (32) extends outside the arc block (25), a first spring (33) is fixedly connected to the inside of the L-shaped slot (31), and the other end of the first spring (33) is fixedly connected to a pull block (34), and side slots (35) are provided on the inner walls of both sides of each arc slot (27), and a limiting block (36) matching the side slot (35) is slidably connected to the side wall of each arc block (25), a traction rope (37) is connected between the limiting block (36) and the corresponding pull block (34), and a slot (38) matching the wedge block (32) is provided on the moving block (28).

3. The production equipment of plastic particles according to claim 2, characterized in that: The invention also includes a cooling assembly (4) for driving the coolant to circulate continuously inside the cutting ring body (14) during the scraping operation. The cooling assembly (4) includes a suction groove (41) provided inside the fixed ring body (21). A piston block (42) is sealed and slidably connected inside the suction groove (41). A pull rod (43) is fixedly connected between the piston block (42) and the movable block (28). A second spring (44) is provided between the piston block (42) and the inner wall of the suction groove (41). A plurality of through holes (45) are provided on the peripheral side wall of the rotating cylinder (13) to connect the suction groove (41) and the inside of the rotating cylinder (13). The plurality of through holes (45) are distributed in an array on the peripheral side of the rotating cylinder (13). A cooling box (46) for exchanging and cooling the coolant is fixedly connected to the upper end of the processing table (1).

4. The production equipment of plastic particles according to claim 3, characterized in that: The two ends of the rotating drum (13) are respectively connected with a liquid inlet hose (47) and a liquid discharge hose (48), and the liquid inlet hose (47) and the liquid discharge hose (48) are respectively connected with the input port and the output port of the cooling box (46). The rotating drum (13) is provided with a one-way valve at both sides of the suction groove (41).

5. The production equipment of plastic particles according to claim 1, characterized in that: The invention also includes a swing assembly (5) for driving the cutting ring body (14) to swing back and forth, wherein the swing assembly (5) includes a first gear (51) fixedly connected to the rotating shaft of the swing plate (12), the lower end of the L-shaped support plate (11) is horizontally slidably connected to a first rack (52), the first rack (52) and the first gear (51) are meshed with each other, and the lower end of the L-shaped support plate (11) is fixedly connected to a hydraulic cylinder (53) for driving the first rack (52).

6. The production equipment of plastic particles according to claim 1, characterized in that: The invention also includes a transmission assembly (6) for driving the scraping assembly (2) to work while the cutting ring body (14) swings back and forth, wherein the transmission assembly (6) is rotatably connected to a transmission rod (61) on the side wall of the swing plate (12), and a second gear (62) is fixedly connected to the transmission rod (61). A second rack (63) is slidably connected to the side wall of the swing plate (12), and the second rack (63) and the second gear (62) are meshed with each other, and a fixed rod (64) is fixedly connected between the second rack (63) and the lifting block (22). The swing plate A transmission ring body (65) is fixedly connected to the side wall of the L-shaped support plate (12), and a synchronous wheel (66) is fixedly connected to the transmission ring body (65) and the transmission rod (61). A synchronous belt (67) is sleeved between the two synchronous wheels (66). A third gear (68) is fixedly connected to the transmission ring body (65). A first arc-shaped tooth groove (69) and a second arc-shaped tooth groove (610) are fixedly connected to the lower end of the L-shaped support plate (11). The first arc-shaped tooth groove (69) and the second arc-shaped tooth groove (610) are respectively engaged with the two sides of the third gear (68).

7. The production equipment of plastic particles according to claim 6, characterized in that: The radius of the synchronous wheel (66) on the transmission ring body (65) is greater than the radius of the synchronous wheel (66) on the transmission rod (61).

8. The production equipment of plastic particles according to claim 1, characterized in that: The invention also includes a cutting assembly (7) for driving the cutting ring body (14) to rotate and cutting the molten plastic strips into plastic particles, comprising a gear ring (71) fixedly connected to the rotating drum (13); a motor (72) is fixedly connected to a side wall of the swing plate (12) away from the cutting ring body (14); a fourth gear (73) is fixedly connected to the output end of the motor (72); and the fourth gear (73) and the gear ring (71) are meshed with each other.

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