Plastic particle cutting and screening equipment

Abstract

The invention relates to the technical field of vibration screening equipment, and provides plastic particle cutting and screening equipment which comprises a vibration box and a plurality of screen plates arranged longitudinally, each screen plate comprises a screen piece arranged in the vibration box in a sliding mode, the screen piece is provided with a plurality of protruding parts arranged at intervals, and a first groove is formed between every two adjacent protruding parts; a plurality of second grooves are formed in the screen piece and located in the other sides of the first grooves. The number of the screen pieces is multiple, the adjacent screen pieces are arranged in a mutually sliding mode, and the first groove of one screen piece and the second groove of the other screen piece in the adjacent screen pieces form screen holes. By means of the technical scheme, the problems that in the prior art, screen holes of a screen plate of vibration screening equipment cannot be adjusted at will, and cleaning is inconvenient when the screen holes are blocked are solved.

Description

Technical Field

[0001] The invention relates to the technical field of vibration screening equipment, and in particular to a plastic particle cutting and screening equipment. Background Art

[0002] In the plastic processing industry, plastic particles need to be screened after pelletizing. Existing vibration screening equipment is widely used in the screening of plastic particles. However, the sieve holes of these traditional vibration screening equipment are usually fixed and cannot be adjusted arbitrarily according to the size requirements of different plastic particles. This leads to poor versatility of the equipment. When it is necessary to process plastic particles with different particle size requirements, it is often necessary to replace the entire sieve plate, which is not only cumbersome, time-consuming and labor-intensive, but also increases the operating cost and downtime of the equipment.

[0003] In addition, during the screening process, the mesh will be clogged. When the mesh is clogged, existing vibrating screening equipment often requires manual cleaning of the mesh one by one, which is inefficient and seriously affects the continuity and efficiency of production. In addition, the screen may be damaged during the cleaning process.

[0004] In summary, the existing vibration screening equipment has obvious deficiencies in the flexibility of adjusting the screen holes and the convenience of cleaning the blockages, and a plastic particle cutting and screening equipment that can solve the above problems is needed. Summary of the invention

[0005] The present invention provides a plastic particle cutting and screening device, which solves the problem that the screen holes of the screen plate of the vibration screening device in the related art cannot be adjusted arbitrarily and it is inconvenient to clean the screen holes when they are blocked by materials.

[0006] The technical solution of the present invention is as follows: A plastic particle cutting and screening device comprises a vibration box and a plurality of sieve plates arranged longitudinally, wherein the sieve plates comprise: A screen plate is slidably arranged in the vibration box, the screen plate has a plurality of protrusions arranged at intervals, a first groove is formed between adjacent protrusions, the screen plate has a plurality of second grooves, the second grooves and the first grooves are respectively located on both sides of the screen plate; the screen plate has a plurality of adjacent two screen plates that are slidably arranged with each other, the first groove of one of the adjacent screen plates and the second groove of the other screen plate form a screen hole.

[0007] Optionally, the upper surface of the protrusion has a slide groove, and further comprises: There are several sliders, each of which is slidably disposed in one of the slide grooves.

[0008] Optionally, the first groove is a U-shaped groove, the second groove is a semicircular groove or a U-shaped groove, and the radius of the first groove at the arc is the same as the radius of the second groove at the arc.

[0009] Optionally, the end of the protrusion is arc-shaped or pointed.

[0010] Optionally, also include: A mounting plate, arranged on the inner wall of the vibration box; A scissor-type telescopic member is arranged on the mounting plate, and the scissor-type telescopic member has a plurality of X-shaped intersection points; There are a plurality of connecting shafts, each of which is arranged at an X-shaped intersection; There are several connecting rings, each of which is sleeved on one of the connecting shafts, and the outer wall of the connecting ring is slidably arranged on an end surface of the sliding block close to the second groove.

[0011] Optionally, also include: A wedge block is arranged on an end face of the sliding block close to the second groove. The wedge block has a slideway, which is arranged along the length direction of the wedge block. After the scissor-type telescopic member drives the screen to move, the slideway is used to provide a sliding space for the connecting ring.

[0012] Optionally, also include: There are several turning handles, each of which is arranged on an end surface of a screen away from the connecting ring, and the turning handle is located away from the protruding portion. The turning handle is used to drive the screen to deflect around the connecting shaft.

[0013] Optionally, also include: A protective side plate is arranged on the inner side wall of the vibration box, and a receiving space is formed between the protective side plate and the inner side wall of the vibration box. The scissor-fork telescopic member and the handle are both located in the receiving space.

[0014] Optionally, the vibration box has a feed port and a plurality of discharge ports, and the plurality of discharge ports are all located on the same side of the vibration box.

[0015] Optionally, the mounting plate has a through slot and further comprises: A driving motor is arranged on a side of the mounting plate away from the scissor-type telescopic member, and the driving motor is located outside the vibration box; A lead screw is rotatably disposed on the mounting plate; A track is arranged on a side of the mounting plate away from the driving motor; There are a plurality of slide seats, each of which is slidably arranged on the track, and each of which is hinged to an X-shaped intersection of the scissor-type telescopic member, and the two X-shaped intersections at the end of the scissor-type telescopic member are respectively a fixed point and a movable point; A connecting arm has one end arranged at the active point and the other end threadedly arranged on the lead screw.

[0016] The working principle and beneficial effects of the present invention are: In the present invention, plastic particles enter from the feed port of the vibration box, and the vibration box starts to vibrate, causing the particles to move on the screen plate. During the screening process, when the size of the screen hole needs to be adjusted, the screen hole can be changed by simply moving the screen plate to slide, thereby changing the screening size of the screen hole. Particles of different particle sizes are screened according to the size of the screen hole, and particles that meet the particle size requirements are discharged from the corresponding discharge port. The screen plate composed of several slidable screen plates not only solves the problem of the fixed screen holes of traditional vibration screening equipment, but also can adjust the size of the screen holes without replacing the entire screen plate, greatly improving the versatility of the equipment. The screen hole can be quickly adjusted according to the size requirements of different plastic particles, reducing the cumbersome operation, time-consuming and labor-intensive problems caused by replacing the screen plate, reducing the operating cost and downtime of the equipment, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of the screen plate and the vibration box of the present invention; Figure 2 It is a schematic diagram of the structure of the screen plate of the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle part; Figure 4 This is a schematic diagram of the structure of the slider of the present invention; Figure 5 for Figure 4 A partial enlarged view of point B in the middle; Figure 6 It is a schematic diagram of the structure of a sieve plate composed of multiple sieve sheets of the present invention; Figure 7 for Figure 6 A partial enlarged view of point C in the middle; Figure 8 This is a schematic diagram of the positional relationship between the scissor-type telescopic member and the screen plate of the present invention; Fig. 9 It is a front view of the scissor-type telescopic member of the present invention; Fig.10 This is a rear view of the scissor-type telescopic member of the present invention; Fig.11 This is a schematic diagram of the internal structure of the wedge block of the present invention; Fig.12 It is a schematic diagram of the gear structure of the present invention; Fig.13 for Fig.12 A partial enlarged view of point D in the middle; Fig.14 This is a schematic diagram of the internal structure of the vibration box of the present invention; Fig.15 for Fig.14 A partial enlarged view of point E in the middle; Fig.16 It is a schematic diagram of the structure of the discharge port and feed port of the vibration box of the present invention.

[0019] In the figure: 1, vibration box; 101, feed port; 102, discharge port; 2, sieve plate; 3, sieve piece; 301, first groove; 302, second groove; 30, sieve hole; 31, protrusion; 311, slide groove; 4, slider; 5, handle; 6, gear; 7, mounting plate; 701, through groove; 8, track; 9, slide seat; 10, drive motor; 11, wedge block; 1101, slideway; 12, connecting ring; 13, lead screw; 14, connecting arm; 15, scissors telescopic member; 1501, X-shaped intersection; 1502, connecting shaft; 16, protective side plate; 1601, accommodating space. DETAILED DESCRIPTION In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0020] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] Reference Figure 1 to Figure 16 , which is an embodiment of the present invention, provides a plastic particle cutting and screening device, including a vibration box 1 and a plurality of sieve plates 2 arranged longitudinally, the sieve plate 2 includes: a sieve plate 3 is slidably arranged in the vibration box 1, the sieve plate 3 has a plurality of protrusions 31 arranged at intervals, a first groove 301 is formed between adjacent protrusions 31, the sieve plate 3 has a plurality of second grooves 302, the second grooves 302 and the first grooves 301 are both located on both sides of the sieve plate 3; the sieve plate 3 has a plurality of adjacent sieve plates 3 that are slidably arranged with respect to each other, the first groove 301 of one of the two adjacent sieve plates 3 and the second groove 302 of the other sieve plate 3 form a sieve hole 30.

[0024] In the above scheme, the sieve plate 2 is composed of a plurality of sieve plates 3, and the adjacent sieve plates 3 are connected by sliding overlap, wherein the first groove 301 of one sieve plate 3 and the second groove 302 of another sieve plate 3 form a strip-shaped sieve hole 30, and the sieve hole 30 can be adjusted in the length direction by the relative sliding of the sieve plates 3. The mutual combination of the sieve plates 3 is not only simple in structure, but also easy to change the size of the sieve hole 30. This combined sieve plate 2 structure is more flexible in dealing with different particle size screening requirements than the traditional integral sieve plate 2. It should be noted that each sieve plate 3 of the present invention is arranged obliquely, and the angle of inclination is 3°-10°. The purpose of such arrangement is to improve the screening effect. It is prevented that when several sieve plates 3 are arranged in a horizontal step shape, the plastic particles cannot be fully screened.

[0025] When working, plastic particles enter from the feed port 101 of the vibration box 1, and the vibration box 1 starts to vibrate, causing the particles to move on the screen plate 2. During the screening process, when the size of the screen hole 30 needs to be adjusted, the screen plate 3 only needs to be moved to slide, so that the screen size of the screen hole 30 can be changed, and particles of different particle sizes are screened according to the size of the screen hole 30, and particles that meet the particle size requirements are discharged from the corresponding discharge port 102. The screen plate 2 composed of a number of slidable screen plates 3 not only solves the problem of the fixed screen hole 30 of the traditional vibration screening equipment, but also can adjust the size of the screen hole 30 without replacing the entire screen plate 2, greatly improving the versatility of the equipment. The screen hole 30 can be quickly adjusted according to the size requirements of different plastic particles, reducing the cumbersome operation, time-consuming and labor-intensive problems caused by replacing the screen plate 2, reducing the operating cost and downtime of the equipment, and improving production efficiency.

[0026] Furthermore, the upper surface of the protrusion 31 has a slide groove 311 and also includes a slider 4: there are a plurality of sliders 4, each slider 4 is slidably disposed in a slide groove 311, and the contact surfaces of the slide groove 311 and the slider 4 are both inclined surfaces.

[0027] In the above scheme, when the size of the sieve hole 30 needs to be adjusted, the sieve plate 3 is pushed to slide. At this time, since the slide groove 311 and the slider 4 are in contact with each other, the slider 4 will slide along the slide groove 311, which can improve the stability of sliding and ensure that the slider 4 and the slide groove 311 will not slip off. It should be noted that by overlapping the sieve plates 3, a protruding portion is formed on the adjacent sieve plates 3. Therefore, during screening, the plastic particles can be bounced in conjunction with the vibration of the vibration box 1. At this time, plastic particles with different particle sizes can be fully dispersed, which improves the screening speed and screening effect.

[0028] Furthermore, the first groove 301 is a U-shaped groove, the second groove 302 is a semicircular groove or a U-shaped groove, and the radius of the first groove 301 at the arc is the same as the radius of the second groove 302 at the arc.

[0029] In the above scheme, when the first groove 301 and the second groove 302 are combined, the shape of the sieve hole 30 formed by the two is a bar shape, which is similar to the shape of a runway, so that the shape of the sieve hole 30 is relatively regular, which is conducive to the smooth passage and screening of plastic particles.

[0030] The first groove 301 of the U-shaped groove has a large accommodating space 1601, which mainly provides sufficient space for adjusting the size of the sieve hole 30, and the second groove 302 and the corners of the second groove 302 are chamfered or rounded, which can play a preliminary guiding role for the particles. The sieve hole 30 formed by the second groove 302 of the semicircular groove and the first groove 301 has relatively small resistance to the passage of particles during the screening process, and is not easy to cause particles to get stuck.

[0031] The plastic particles roll or jump on the sieve plate 2 under the action of vibration. When the particles reach the position of the sieve hole 30, since the sieve hole 30 is composed of the first groove 301 and the second groove 302, the particles decide whether to pass through according to the relationship between their own particle size and the size of the sieve hole 30. For example, particles with a particle size smaller than the diameter of the sieve hole 30 (determined by the combined size of the first groove 301 and the second groove 302) can pass through the sieve hole 30 smoothly, while particles with a larger particle size remain on the sieve plate 2 and continue to move, waiting for the next screening opportunity or being directed to the discharge port 102.

[0032] The U-shaped groove and the semicircular groove make the shape and size of the sieve hole 30 more suitable for the screening of plastic particles. The regular shape of the sieve hole 30 reduces the resistance when particles pass through and improves the screening efficiency. At the same time, the arc structure with the same radius ensures the shape stability of the sieve hole 30 during the adjustment process, avoiding screening errors caused by irregular shapes.

[0033] Furthermore, the end of the protrusion 31 is in an arc shape or a pointed shape.

[0034] In the above scheme, the screen plate 3 structure with arc-shaped ends can provide a smoother transition surface when particles come into contact with the screen plate 2, compared with the structure with pointed ends. This structural feature makes the movement of particles on the screen plate 2 smoother, reducing the possibility of particles being stuck due to irregular ends.

[0035] When the plastic particles move on the screen plate 2 with the vibration in the vibration box 1, the particles frequently contact the protrusion 31 of the screen plate 3. Since the end of the protrusion 31 is in an arc shape, the particles can change the direction of movement along the arc surface, continue to roll or jump on the screen plate 2, and smoothly move to the screen hole 30 for screening. The smoothness of the movement of the plastic particles on the screen plate 2 is improved, the particle jamming phenomenon is reduced, and the screening efficiency is improved.

[0036] Furthermore, it also includes a mounting plate 7, which is arranged on the inner wall of the vibration box 1; a scissors-type telescopic member 15 is arranged on the mounting plate 7, and the scissors-type telescopic member 15 has a plurality of X-shaped intersections 1501; there are a plurality of connecting shafts 1502, each of which is arranged at an X-shaped intersection 1501, there are a plurality of connecting rings 12, each of which is sleeved on a connecting shaft 1502, and the outer wall of the connecting ring 12 is slidably arranged on an end face of the slider 4 close to the second groove 302.

[0037] In the above scheme, the scissors-type telescopic member 15 is composed of a plurality of metal rods connected by axle pins to form an X-shaped cross structure, and the X-shaped intersection 1501 is located in the middle of the scissors-type telescopic member 15. A connecting shaft 1502 is arranged at each X-shaped intersection 1501. The mounting plate 7 enables the scissors-type telescopic member 15 to be firmly arranged on the inner wall of the vibration box 1. The X-shaped cross structure of the scissors-type telescopic member 15 has good telescopic deformation ability, and telescopic movement can be achieved by changing the intersection angle. The setting of the connecting shaft 1502 and the connecting ring 12 transmits the movement of the scissors-type telescopic member 15 to the slider 4. It should be noted that all the sieve holes 30 on the screen plate 2 do not need to be completely consistent, but only need to be able to pass the plastic particles that meet the requirements, and the plastic particles that meet the requirements are usually a range of values, so the adjustment range of the sieve holes 30 only needs to meet the required range of values.

[0038] When the scissor-type telescopic member 15 is driven to extend or retract, for example, the scissor-type telescopic member 15 is extended, the connecting shaft 1502 moves with the movement of the X-shaped intersection 1501, and the connecting ring 12 sleeved on the connecting shaft 1502 pushes the slider 4 to slide in the slide groove 311. Due to the sliding cooperation between the connecting ring 12 and the slider 4, the slider 4 can move in a predetermined direction, thereby driving the screen plate 3 to slide relatively, thereby adjusting the size of the screen hole 30.

[0039] Furthermore, it also includes a wedge block 11, which is arranged on an end face of the slider 4 close to the second groove 302. The wedge block 11 has a slide 1101, and the slide 1101 is arranged along the length direction of the wedge block 11. After the scissors-type telescopic member 15 drives the screen 3 to move, the slide 1101 is used to provide a sliding space for the connecting ring 12.

[0040] In the above scheme, when the scissor-type telescopic member 15 drives the screen 3 to move, the connecting ring 12 slides in the slideway 1101, and the slideway 1101 provides a stable sliding space for the connecting ring 12, limiting the movement direction of the connecting ring 12, so that it can only push the slider 4 along the slideway 1101. Because the screen 3 is arranged obliquely, and the scissors and telescopic member are arranged along the length direction of the vibration box 1, the slideway 311 can provide a movable space for the movement of the slider 4 to prevent the slider 4 from being stuck. At the same time, the slideway 311 can also prevent it from deviating during the process of pushing the slider 4, ensuring the accuracy and reliability of the adjustment of the screen 3.

[0041] When the scissor-type telescopic member 15 is in motion, the connecting ring 12 slides in the slideway 1101 of the wedge block 11. Due to the limitation of the slideway 1101, the connecting ring 12 can only apply thrust to the wedge block 11 along the direction of the slideway 1101. The wedge block 11 transmits the force to the slider 4, so that the slider 4 slides in the slideway 311 in a predetermined direction, driving the screen 3 to move relatively, and realizing the adjustment of the screen hole 30. It effectively ensures that the screen 3 can be adjusted in the expected direction and displacement. The restraining effect of the slideway 1101 on the connecting ring 12 reduces the adjustment error of the screen hole 30 caused by the unstable movement of the connecting ring 12, improves the accuracy and reliability of the adjustment of the screen hole 30 of the equipment, and is conducive to improving the quality of plastic particle screening.

[0042] Furthermore, it also includes a turning handle 5, which has a plurality of turning handles 5. Each turning handle 5 is arranged on an end face of a screen 3 away from the connecting ring 12, and the turning handle 5 is located away from the protrusion 31. The turning handle 5 is used to drive the screen 3 to deflect around the connecting shaft 1502.

[0043] In the above scheme, the turning handle enables the screen 3 to perform a small deflection movement around the connecting shaft 1502. The turning handle 5 provides a grip or a control part for the deflection of the screen 3, ensuring the convenience of rotating the screen 3. A gear 6 is also provided on the turning handle 5, and the gear 6 is engaged with an additional rack on the inner wall of the vibration box 1 or located in the protective side plate 16 to achieve the limit locking of the turning handle 5. It should be noted that by turning one of the turning handles 5 separately, the screen 3 corresponding to the turning handle 5 can be deflected, opened and cleaned separately. It can be understood that in another deflection method of the screen, when the screen plate 2 needs to be cleaned, the rack used for limiting can be removed, and the screen 3 can be directly turned over manually.

[0044] The rack can ensure that when the vibration box 1 vibrates at high frequency, the screen 3 will not be easily affected by the vibration and deflected and opened due to the meshing action of the rack and the gear 6. It can be understood that the size of the screen hole 30 only needs to be adjusted before screening, and the blocked plastic particles will be cleaned after screening. Therefore, when adjusting the width of the screen hole 30, it is only necessary to move the rack away from the gear 6, which will not affect the distance adjustment work of the scissor telescopic member 15, and then install the rack in place.

[0045] The device does not need to use tools to clean the sieve holes 30 one by one, but only needs to rotate the sieve plate 3 to deflect the sieve holes 30. Even if the material particles are stuck in the first groove 301 or the second groove 302, it only needs to flip the entire sieve plate 3. This greatly improves the cleaning efficiency, reduces the equipment downtime, and ensures the continuity of production.

[0046] Furthermore, it also includes a protective side plate 16, which is arranged on the inner wall of the vibration box 1, and a receiving space 1601 is formed between the protective side plate 16 and the inner wall of the vibration box 1, and the scissor-type telescopic member 15 and the gear 6 are both located in the receiving space 1601.

[0047] In the above scheme, a protective side plate 16 is fixed on the inner wall of the vibration box 1 by bolts, and the setting of the protective side plate 16 provides a relatively closed working environment for the scissor telescopic member 15, the handle 5 and the gear 6, which can protect these components from the direct impact of plastic particles. During the operation of the equipment, the plastic particles are screened on the screen plate 2, and the protective side plate 16 blocks the particles from entering the accommodating space 1601, protecting the scissor telescopic member 15 and the gear 6 from working normally. It should be noted that because the connecting shaft 1502 of the scissor telescopic member 15 needs to extend out of the protective side plate 16 and needs to move laterally, it is necessary to open a long hole on the side wall of the protective side plate 16 for the connecting shaft 1502 to slide through. In addition, it can be understood that because the aperture value that needs to be adjusted by the sieve hole 30 is not too much, the distance that each connecting shaft 1502 moves will not be too much, and each long hole does not need to have a long length. Because each long hole corresponds to a connecting shaft 1502. In addition, a rubber sheet or the like can be set at the long hole to reduce the entry of plastic particles.

[0048] Furthermore, the vibration box 1 has a feed port 101 and a plurality of discharge ports 102 , and the plurality of discharge ports 102 are all located on the same side of the vibration box 1 .

[0049] In the above scheme, the feed port 101 is located at the top of the vibration box 1, and gravity can be used to evenly distribute the plastic particles on the screen plate 2. Multiple discharge ports 102 are located at the bottom of the same side, which is convenient for classifying and collecting particles of different particle sizes according to the size of the screen hole 30 and the screening requirements. Although the discharge ports 102 are located on the same side of the vibration box 1, the position of each discharge port 102 is different, which can meet the discharge requirements of plastic particles of various particle sizes, and improve the discharge flexibility and adaptability of the equipment.

[0050] After the plastic particles enter the vibration box 1 from the feed port 101, under the action of vibration and screening of the screen plate 2, particles with a particle size smaller than a certain size of the screen hole 30 pass through the screen hole 30 and fall into the corresponding discharge port 102. For example, particles with the smallest particle size pass through the top screen plate 2 and fall into the first discharge port 102, particles with a moderate particle size pass through the middle screen plate 2 and fall into the second discharge port 102, and particles with a larger particle size fall directly from the bottom screen plate 2 into the third discharge port 102, thus realizing the classification screening and discharge of plastic particles.

[0051] The efficient classification, screening and discharging of plastic particles are realized, and particles can be collected by particle size according to different production requirements, thereby improving product quality and the convenience of subsequent processing. The discharge port 102 on the same side facilitates the layout of the equipment and the connection of pipelines, reduces the equipment footprint, and improves the space utilization rate of the production workshop.

[0052] Furthermore, the mounting plate 7 has a through groove 701 and also includes a drive motor 10, which is arranged on the side of the mounting plate 7 away from the scissors-type telescopic member 15, and the drive motor 10 is located on the outside of the vibration box 1; the screw 13 is rotatably arranged on the mounting plate 7; the track 8 is arranged on the side of the mounting plate 7 away from the drive motor 10; there are a plurality of slide seats 9, and a plurality of slide seats 9 are slidably arranged on the track 8, each slide seat 9 is hinged to an X-shaped intersection 1501 of a scissors-type telescopic member 15, and the two X-shaped intersection points at the end of the scissors-type telescopic member 15 are respectively a fixed point and a movable point; one end of the connecting arm 14 is arranged at the movable point, and the other end is threadedly arranged on the screw 13.

[0053] In the above scheme, the through slot 701 provides space for the installation of the lead screw 13 and the connecting arm 14, so that the drive motor 10 can indirectly drive the scissor-type telescopic member 15 through the lead screw 13 and the connecting arm 14. The transmission mechanism composed of the drive motor 10, the lead screw 13, the slide seat 9 and the connecting arm 14 converts the rotational motion of the motor into the linear telescopic motion of the scissor-type telescopic member 15, thereby realizing the power input for adjusting the sieve hole 30. The T-shaped track 8 ensures the stability of the slide seat 9 during the sliding process to prevent it from falling out.

[0054] When working, start the drive motor 10, and the motor drives the lead screw 13 to rotate. Since one end of the connecting arm 14 is threadedly connected to the lead screw 13, and the other end is connected to the active point of the scissor telescopic member 15, the rotation of the lead screw 13 will cause the connecting arm 14 to drive the slide 9 to slide left and right on the slideway 1101. The sliding of the slide 9 then pushes the scissor telescopic member 15 to extend and retract, thereby pushing the screen 3 and adjusting the size of the screen hole 30. It should be noted that the accompanying drawings only show a sieve plate 2 composed of 4 groups of screens 3. When more screens 3 are needed to form a larger area of ​​the sieve plate 2, the length of the lead screw 13 and the scissor telescopic member 15 can be lengthened, and the length of the lead screw 13 and the scissor telescopic member 15 is not limited here. This electric drive method is more convenient and efficient than manual adjustment, improves the degree of automation of the adjustment of the screen hole 30 of the equipment, reduces the intensity of manual operation, and is conducive to improving production efficiency and the intelligent level of equipment.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plastic granule cutting and screening device, comprising a vibrating box (1) and a plurality of sieve plates (2) arranged longitudinally, characterized in that: The sieve plate (2) comprises: A screen plate (3) is slidably arranged in the vibration box (1), the screen plate (3) having a plurality of protrusions (31) arranged at intervals, a first groove (301) being formed between adjacent protrusions (31), the screen plate (3) having a plurality of second grooves (302), the second grooves (302) and the first groove being located on both sides of the screen plate (3); The sieve plates (3) are provided in a plurality, and two adjacent sieve plates (3) are arranged to slide relative to each other, and the first groove (301) of one of the two adjacent sieve plates (3) and the second groove (302) of the other sieve plate (3) form a sieve hole (30).

2. A plastic granule cutting and screening device according to claim 1, characterized in that: The upper surface of the protruding portion (31) has a sliding groove (311), and further comprises: There are a plurality of sliding blocks (4), and each of the sliding blocks (4) is slidably disposed in one of the sliding grooves (311).

3. A plastic granule cutting and screening device according to claim 1, characterized in that: The first groove (301) is a U-shaped groove, the second groove (302) is a semicircular groove or a U-shaped groove, and the radius of the first groove (301) at the arc is the same as the radius of the second groove (302) at the arc.

4. The plastic granule cutting and screening device according to claim 1, characterized in that: The end of the protrusion (31) is in an arc shape or a pointed shape.

5. The plastic granule cutting and screening equipment according to claim 2, characterized in that: Also includes: A mounting plate (7) is arranged on the inner wall of the vibration box (1); A scissor-type telescopic member (15) is arranged on the mounting plate (7), and the scissor-type telescopic member (15) has a plurality of X-shaped intersection points (1501); There are a plurality of connecting shafts (1502), each of which is disposed at an X-shaped intersection (1501); There are a plurality of connecting rings (12), each of which is sleeved on one of the connecting shafts (1502), and an outer wall of the connecting ring (12) is slidably disposed on an end surface of the sliding block (4) close to the second groove (302).

6. A plastic granule cutting and screening device according to claim 5, characterized in that: Also includes: A wedge block (11) is arranged on an end surface of the sliding block (4) close to the second groove (302), and the wedge block (11) has a slideway (1101). The slideway (1101) is arranged along the length direction of the wedge block (11), and after the scissor-type telescopic member (15) drives the screen plate (3) to move, the slideway (1101) is used to provide a sliding space for the connecting ring (12).

7. The plastic granule cutting and screening device according to claim 5, characterized in that: Also includes: There are a plurality of turning handles (5), each of which is arranged on an end surface of a screen plate (3) away from the connecting ring (12), and the turning handle (5) is located at a position away from the protruding portion (31). The turning handle (5) is used to drive the screen plate (3) to deflect around the connecting shaft (1502).

8. The plastic granule cutting and screening device according to claim 7, characterized in that: Also includes: A protective side plate (16) is arranged on the inner wall of the vibration box (1), and a receiving space (1601) is formed between the protective side plate (16) and the inner wall of the vibration box (1), and the scissor-type telescopic member (15) and the turning handle (5) are both located in the receiving space (1601).

9. The plastic granule cutting and screening device according to claim 1, characterized in that: The vibration box (1) has a feed port (101) and a plurality of discharge ports (102), and the plurality of discharge ports (102) are all located on the same side of the vibration box (1).

10. The plastic granule cutting and screening device according to claim 5, characterized in that: The mounting plate (7) has a through slot (701) and further comprises: A drive motor (10) is arranged on a side of the mounting plate (7) away from the scissor-type telescopic member (15), and the drive motor (10) is located outside the vibration box (1); A lead screw (13) rotatably mounted on the mounting plate (7); A track (8) is arranged on a side of the mounting plate (7) away from the drive motor (10); A plurality of slide seats (9), each of which is slidably disposed on the track (8), each of which is hinged to an X-shaped intersection point (1501) of the scissor-type telescopic member (15), and two X-shaped intersection points at the end of the scissor-type telescopic member (15) are respectively a fixed point and a movable point; A connecting arm (14) has one end disposed at the active point and the other end threadably connected to the lead screw (13).

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