CN117183147A

CN117183147A - Automatic screening device for plastic sheet raw materials

Info

Publication number: CN117183147A
Application number: CN202311124722.3A
Authority: CN
Inventors: 曾承荣
Original assignee: Dongguan Bikai Alwayseal Technology Ltd
Current assignee: Dongguan Bikai Alwayseal Technology Ltd
Priority date: 2023-09-02
Filing date: 2023-09-02
Publication date: 2023-12-08

Abstract

The invention discloses an automatic screening device for plastic sheet raw materials, which comprises a base, wherein a blanking hopper is arranged at the top end of the base, a plurality of screen drums are fixedly connected to the top end of the blanking hopper, a feeding structure is fixedly connected to the top of the uppermost screen drum, a blanking opening is formed in the bottom end of the blanking hopper, and screening structures are arranged in the screen drums. According to the invention, the base, the blanking hopper, the plurality of screen drums and the feeding structure are arranged, the screening structure, the supporting plate, the guide rod, the bottom plate, the top plate, the first spring and the driving structure are arranged in each screen drum, and the screening structure can be driven to jump in the screen drum by a large extent through the driving structure, so that the vibration amplitude of plastic sheets on the surface of the screening structure is larger, and the screening efficiency of the plastic sheets is improved. Secondly, the screening structure can be fast detached from the inside of the screen cylinder, so that the screening structures with different mesh sizes can be replaced conveniently.

Description

Automatic screening device for plastic sheet raw materials

Technical Field

The invention relates to the technical field of plastic sheet processing, in particular to an automatic screening device for plastic sheet raw materials.

Background

With the rapid development of people's life, plastic products have been widely used in a plurality of fields, but the sheet raw materials of plastic products have good quality, different particle size, density, therefore need to carry out effective screening back to the plastic products before production and processing and can be used, screening equipment is indispensable in the classification production of plastic products.

But current device for plastic raw materials screening is all installed vibrating motor at sieving mechanism shell surface, and the vibration amplitude of inside screen cloth is little, to granular plastic raw materials screening, can reach better screening effect, but when selecting to flaky plastic raw materials, the plastic sheet is difficult for rolling, adds screen cloth vibration amplitude little, will lead to the sheet of jumbo size to block little sheet on the screen cloth surface to influence screening efficiency. Secondly, the number of screens in the existing screening device is fixed, if plastic sheets need to be screened into more size types, different screening devices need to be replaced, and therefore processing cost is increased.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides an automatic screening device for plastic sheet raw materials, which solves the defects that the existing screening device has low efficiency in screening sheet plastics and can not adjust the number of screens according to requirements.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides an automatic sieving mechanism of plastic sheet raw materials, includes the base, the base top is provided with down the hopper, hopper top fixedly connected with a plurality of screen pipes down, and the top fixedly connected with feed structure of the top screen pipe, the feed opening has been seted up to the hopper bottom down, every the inside screening structure that all is provided with of screen pipe, screen pipe inner wall both sides just are located screening structure below all are fixed with the backup pad, and the backup pad middle part has been seted up the perforation, the inside sliding connection of perforation has the guide arm, guide arm bottom fixedly connected with bottom plate, bottom plate and backup pad lower surface joint have first spring, guide arm top fixedly connected with roof, roof upper surface is fixed with the joint structure of being connected with screening structure, every screen pipe is inside and be located screening structure below and be provided with the drive structure of drive screening structure vibration.

Preferably, the feeding structure comprises a feeding hopper, a feeding opening is formed in one side of the top wall of the feeding hopper, a first motor is fixed in the middle of the upper surface of the feeding hopper, a driving shaft at the bottom of the first motor is fixedly connected with a connecting block, the outer side wall of the connecting block is fixedly connected with a plurality of screws, and each screw is rotationally connected with a magnetic rod on the surface of each screw. The magnetic rod is driven to rotate in the upper hopper through the first motor, and when plastic sheets are added into the upper hopper from the feeding port, the magnetic rod can adsorb broken iron in the sheets, so that the function of the device is improved.

Preferably, the bottom end of the feeding hopper is fixedly connected with the top end of the screen cylinder through a flange, the screen cylinder is fixedly connected with the screen cylinder through a flange, and the bottom end of the screen cylinder is fixedly connected with the top end of the discharging hopper through a flange. Therefore, the screen cylinder and the screen cylinder, the feeding hopper and the screen cylinder, and the discharging hopper and the screen cylinder can be detached from each other.

Preferably, the screening structure comprises a screening frame, a screen is fixedly connected to the middle of the screening frame, and the mesh sizes of the screens inside the screen cylinders are different. The plastic sheet can be screened into different types of raw materials by adopting screens with different mesh sizes.

Preferably, the clamping structure comprises a clamping block fixed on the surface of the top plate, clamping holes for plugging the clamping blocks are formed in two sides of the screening frame, grooves are formed in two sides of the top end of the clamping block, a second spring is fixedly connected to the inner wall of each groove, clamping teeth are fixedly connected to the other end of each second spring, one end of each clamping tooth located outside each groove is clamped on the surface of the screening frame, and the top of each clamping tooth far away from one end of each groove is designed to be an inclined surface. After the fixture block card goes into the card hole inside, the latch can be popped out from the recess under the elasticity of second spring to the card is at screening frame surface, thereby fixed to screening structure.

Preferably, the driving structure comprises a rotating shaft rotationally connected with the side wall of the screen cylinder, a cam is fixedly connected with the surface of the rotating shaft and positioned below the bottom plate, the driving structure further comprises a second motor fixed on the outer side wall of the screen cylinder, and one end, close to the second motor, of the rotating shaft penetrates through the side wall of the screen cylinder and is fixedly connected with the driving end of the second motor. The second motor drives the rotating shaft and the cam to rotate, the cam can be utilized to continuously flap the bottom plate, the guide rod can drive the screening structure to be adjusted all the time by matching with the elastic force of the first spring, and therefore screening of plastic sheets on the surface of the screening structure is achieved.

Preferably, a discharge hole is formed in one side, far away from the driving structure, of each screen cylinder, an electric telescopic rod is fixedly connected to the outer side wall of each screen cylinder and located below the discharge hole, a baffle is fixedly connected to the telescopic end of the top of each electric telescopic rod, and the baffle is attached to the discharge hole. The baffle is driven to lift by the electric telescopic rod, so that the discharge opening can be opened or closed.

Preferably, two support rods are fixed on one side of the upper surface of the base, the top ends of the two support rods are rotationally connected with the lower surface of the lower hopper, one side, far away from the support rods, of the upper surface of the base is rotationally connected with a hydraulic telescopic rod, and the telescopic end of the top of the hydraulic telescopic rod is rotationally connected with the lower surface of the lower hopper. After screening is completed, the lower hopper and the screen cylinder are driven to incline to one side of the discharge hole by extending the hydraulic telescopic rod, so that the screened plastic sheets are poured out.

Working principle: first motor is started, and a plurality of magnetic bars of utilizing first motor drive are rotatory in last hopper inside, then from the inside plastic sheet that needs to screen of adding of hopper to the feed inlet, and the magnetic bar can adsorb the inside broken iron impurity of plastic sheet this moment, and the plastic sheet of getting rid of iron impurity can fall to the inside screening structure surface of the top screen drum. At this moment, the second motors of all screen cylinder lateral walls are started, the second motors are used for driving the rotating shafts to rotate, the rotating shafts can drive cams on the surfaces of the rotating shafts to rotate, the cams can flap the bottom plate and jack up the bottom plate alternately, the bottom plate can descend again under the elasticity of the first springs, so that the up-and-down reciprocating motion of the guide rods is realized, the whole screening structure is driven to vibrate up and down, the screening of plastic sheets is realized, and the screened small-size plastic sheets can fall into the screen cylinder below to continue to be screened. The plastic sheet with the smallest size can be discharged from the discharging opening at the bottom of the discharging hopper. After screening is finished, the electric telescopic rod on the side wall of the screen drum is started to be shortened, the baffle is driven to descend, the discharge hole is opened, and then the hydraulic telescopic rod is started to be elongated, so that the screen drum inclines to one side of the discharge hole, and a worker can catch plastic sheets at the discharge hole by using the collecting box.

(III) beneficial effects

The invention provides an automatic screening device for plastic sheet raw materials. The beneficial effects are as follows:

when the plastic sheet screening device is used, the base, the blanking hopper, the plurality of screening drums and the feeding structure are arranged, the screening structure, the supporting plate, the guide rod, the bottom plate, the top plate, the first spring and the driving structure are arranged in each screening drum, and the screening structure can be driven to jump greatly in the screening drum through the driving structure, so that the vibration amplitude of plastic sheets on the surface of the screening structure is larger, and the screening efficiency of the plastic sheets is improved. Secondly, the screening structure can be fast detached from the inside of the screen cylinder, so that the screening structures with different mesh sizes can be replaced conveniently. And the number of the screen barrels between the feeding structure and the discharging hopper can be adjusted according to actual screening requirements, so that the flexibility of the use of the screening device is improved.

Drawings

FIG. 1 is an overall cross-sectional view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of a screening structure of the present invention;

FIG. 4 is an enlarged view of FIG. 1 at A;

FIG. 5 is an enlarged view of FIG. 1 at B;

fig. 6 is an enlarged view of fig. 1 at C.

1, a base; 2. discharging a hopper; 3. a screen drum; 4. a feeding structure; 41. feeding a hopper; 42. a first motor; 43. a connecting block; 44. a screw; 45. a magnetic rod; 46. a feeding port; 5. a feed opening; 6. screening a structure; 61. a screening frame; 62. a screen; 63. a clamping hole; 7. a support plate; 71. perforating; 8. a guide rod; 9. a bottom plate; 10. a top plate; 11. a first spring; 12. a clamping block; 13. a groove; 14. a second spring; 15. latch teeth; 16. a driving structure; 161. a rotating shaft; 162. a cam; 163. a second motor; 17. a discharge port; 18. an electric telescopic rod; 19. a baffle; 20. a support rod; 21. a hydraulic telescopic rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples:

as shown in fig. 1-6, an embodiment of the invention provides an automatic screening device for plastic sheet raw materials, which comprises a base 1, wherein a blanking hopper 2 is arranged at the top end of the base 1, a plurality of screen drums 3 are fixedly connected at the top end of the blanking hopper 2, a feeding structure 4 is fixedly connected at the top of the uppermost screen drum 3, a blanking opening 5 is arranged at the bottom end of the blanking hopper 2, screening structures 6 are arranged inside each screen drum 3, supporting plates 7 are fixedly arranged at two sides of the inner wall of the screen drum 3 and below the screening structures 6, through holes 71 are formed in the middle of the supporting plates 7, guide rods 8 are slidably connected inside the through holes 71, a bottom plate 9 is fixedly connected at the bottom end of each guide rod 8, a first spring 11 is fixedly connected with the lower surface of the bottom plate 9 and the supporting plates 7 together, a top plate 10 is fixedly connected at the top end of each guide rod 8, a clamping structure connected with the screening structures 16 which are fixedly arranged on the upper surface of the top plate 10 and are connected with the screening structures 6, and driving structures 16 which are arranged inside each screen drum 3 and below the screening structures 6 and are used for driving the screening structures 6 to vibrate.

As shown in fig. 1 and 4, the feeding structure 4 comprises a feeding hopper 41, a feeding opening 46 is formed in one side of the top wall of the feeding hopper 41, a first motor 42 is fixed in the middle of the upper surface of the feeding hopper 41, a driving shaft at the bottom of the first motor 42 is fixedly connected with a connecting block 43, the outer side wall of the connecting block 43 is fixedly connected with a plurality of screws 44, and a magnetic rod 45 is rotatably connected to the surface of each screw 44. The magnetic rods 45 are driven to rotate in the upper hopper 41 by the first motor 42, and when plastic sheets are added in the upper hopper 41, the magnetic rods 45 can adsorb iron impurities in the sheets, so that the screening device also has an iron removal function, and the multifunction of the device is realized.

As shown in fig. 1 and 2, the bottom end of the upper hopper 41 is fixedly connected with the top end of the screen cylinder 3 through a flange, the screen cylinder 3 is fixedly connected with the screen cylinder 3 through a flange, and the bottom end of the screen cylinder 3 is fixedly connected with the top end of the lower hopper 2 through a flange. The number of screen cylinders 3 can thus be increased or decreased between the upper and lower hoppers 41, 2 according to the actual requirements, and more screen cylinders 3 can be selected if finer screening of the plastic sheet is required.

As shown in fig. 3, the screening structure 6 includes a screening frame 61, and a screen 62 is fixedly connected to the middle of the screening frame 61, and the mesh sizes of the screen 62 inside each screen cylinder 3 are different. The meshes of the screen mesh 62 in the screen cylinder 3 from bottom to top are changed from small to large, and the plastic sheets can be screened step by step.

As shown in fig. 1-6, the clamping structure comprises a clamping block 12 fixed on the surface of the top plate 10, clamping holes 63 for inserting the clamping block 12 are formed in two sides of the screening frame 61, grooves 13 are formed in two sides of the top end of the clamping block 12, a second spring 14 is fixedly connected to the inner wall of each groove 13, clamping teeth 15 are fixedly connected to the other end of each second spring 14, one end, located outside each groove 13, of each clamping tooth 15 is clamped on the surface of the screening frame 61, and the top of one end, away from each groove 13, of each clamping tooth 15 is designed to be an inclined surface. After the clamping block 12 is clamped into the clamping hole 63, the second spring 14 can eject the clamping tooth 15 from the groove 13, and the clamping tooth 15 is clamped on the surface of the screening frame 61, so that the screening frame 61 is fixed. While latch 15 is designed with a bevel to facilitate insertion of latch 12 into latch hole 63. If the screening structure 6 needs to be replaced, the latch 15 on both sides of the clamping block 12 is pressed, so that the latch 15 is retracted into the groove 13, then the screening frame 61 can be detached from the surface of the clamping block 12, and then the screening structure 6 with different mesh sizes is replaced.

As shown in fig. 1 and 6, the driving structure 16 includes a rotating shaft 161 rotatably connected with the side wall of the screen drum 3, a cam 162 is fixedly connected with the surface of the rotating shaft 161 and located below the bottom plate 9, the driving structure 16 further includes a second motor 163 fixed on the outer side wall of the screen drum 3, and one end of the rotating shaft 161, which is close to the second motor 163, passes through the side wall of the screen drum 3 and is fixedly connected with the driving end of the second motor 163. After the rotating shaft 161 is driven to rotate by the second motor 163, the rotating shaft 161 can drive the cam 162 to rotate, the cam 162 can continuously flap the bottom plate 9, the bottom plate 9 can be jacked up, after the long end of the cam 162 is far away from the bottom plate 9, the first spring 11 can downwards jack the bottom plate 9, the bottom plate 9 can continuously move up and down, the bottom plate 9 can drive the whole screening structure 6 to move up and down through the guide rod 8, at the moment, the vibration amplitude of the screening structure 6 can be larger, and plastic sheets on the surface of the screen 62 can continuously jump up, so that the screening of the plastic sheets is realized.

As shown in fig. 1 and 6, a discharge opening 17 is formed in one side, far away from the driving structure 16, of each screen cylinder 3, an electric telescopic rod 18 is fixedly connected to the outer side wall of each screen cylinder 3 and located below the discharge opening 17, a baffle 19 is connected to the telescopic end of the top of each electric telescopic rod 18, and the baffle 19 is attached to the discharge opening 17. The discharging hole 17 can be blocked by the baffle 19, after screening is finished, the electric telescopic rod 18 can be started to drive the baffle 19 to descend, so that the discharging hole 17 is opened, and the screened plastic sheet can be discharged from the discharging hole 17.

As shown in fig. 1-6, two support rods 20 are fixed on one side of the upper surface of the base 1, the top ends of the two support rods 20 are rotatably connected with the lower surface of the lower hopper 2, a hydraulic telescopic rod 21 is rotatably connected on one side, far away from the support rods 20, of the upper surface of the base 1, and the telescopic end of the top of the hydraulic telescopic rod 21 is rotatably connected with the lower surface of the lower hopper 2. After the screening is finished, the whole device is driven to rotate and incline to the side of the discharge hole 17 by the hydraulic telescopic rod 21, so that the plastic sheet can be discharged from the discharge hole 17.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An automatic sieving mechanism of plastic sheet raw materials, its characterized in that: including base (1), base (1) top is provided with hopper (2) down, hopper (2) top fixedly connected with screen drum (3) down, and the top fixedly connected with feed structure (4) of top screen drum (3), feed opening (5) have been seted up to hopper (2) bottom down, every screen drum (3) inside all is provided with screening structure (6), screen drum (3) inner wall both sides just are located screening structure (6) below and all are fixed with backup pad (7), and have seted up perforation (71) in backup pad (7) middle part, perforation (71) inside sliding connection has guide arm (8), guide arm (8) bottom fixedly connected with bottom plate (9), bottom plate (9) are fixedly connected with first spring (11) jointly with backup pad (7) lower surface, roof (10) upper surface is fixed with the joint structure of being connected with screening structure (6), every screen drum (3) inside just be located screening structure (6) below and set up vibration drive structure (16).

2. An automatic screening apparatus for plastic sheet stock according to claim 1, wherein: the feeding structure (4) comprises a feeding hopper (41), a feeding opening (46) is formed in one side of the top wall of the feeding hopper (41), a first motor (42) is fixed in the middle of the upper surface of the feeding hopper (41), a connecting block (43) is fixedly connected to a driving shaft at the bottom of the first motor (42), a plurality of screws (44) are fixedly connected to the outer side wall of the connecting block (43), and magnetic rods (45) are rotationally connected to the surfaces of the screws (44).

3. An automatic screening apparatus for plastic sheet stock according to claim 2, wherein: the bottom end of the feeding hopper (41) is fixedly connected with the top end of the screen cylinder (3) through a flange, the screen cylinder (3) is fixedly connected with the screen cylinder (3) through a flange, and the bottom end of the screen cylinder (3) is fixedly connected with the top end of the discharging hopper (2) through a flange.

4. An automatic screening apparatus for plastic sheet stock according to claim 1, wherein: the screening structure (6) comprises a screening frame (61), a screen (62) is fixedly connected to the middle of the screening frame (61), and the mesh sizes of the screens (62) in the screen cylinders (3) are different.

5. The automatic screening device for plastic sheet raw materials according to claim 4, wherein: clamping structure is including being fixed in fixture block (12) on roof (10) surface, clamping hole (63) that are used for grafting fixture block (12) are all seted up to screening frame (61) both sides, recess (13) have all been seted up on fixture block (12) top both sides, recess (13) inner wall fixedly connected with second spring (14), second spring (14) other end fixedly connected with latch (15), the one end joint that latch (15) are located outside recess (13) is in screening frame (61) surface, the top that recess (13) one end was kept away from to latch (15) is the inclined plane design.

6. An automatic screening apparatus for plastic sheet stock according to claim 1, wherein: the driving structure (16) comprises a rotating shaft (161) which is rotationally connected with the side wall of the screen cylinder (3), a cam (162) is fixedly connected to the surface of the rotating shaft (161) and located below the bottom plate (9), the driving structure (16) further comprises a second motor (163) which is fixed on the outer side wall of the screen cylinder (3), and one end, close to the second motor (163), of the rotating shaft (161) penetrates through the side wall of the screen cylinder (3) and is fixedly connected with the driving end of the second motor (163).

7. An automatic screening apparatus for plastic sheet stock according to claim 1, wherein: every screen cylinder (3) keep away from drive structure (16) one side and seted up bin outlet (17), screen cylinder (3) lateral wall just is located bin outlet (17) below fixedly connected with electric telescopic handle (18), electric telescopic handle (18) top telescopic handle fixedly connected with baffle (19), baffle (19) are laminated with bin outlet (17).

8. The automatic screening device for plastic sheet raw materials according to claim 7, wherein: two support rods (20) are fixed on one side of the upper surface of the base (1), the top ends of the two support rods (20) are rotationally connected with the lower surface of the blanking hopper (2), one side, far away from the support rods (20), of the upper surface of the base (1) is rotationally connected with a hydraulic telescopic rod (21), and the telescopic end at the top of the hydraulic telescopic rod (21) is rotationally connected with the lower surface of the blanking hopper (2).