Plastic product raw material crushing equipment

Abstract

The invention relates to the technical field of plastic product production and processing, and particularly discloses plastic product raw material crushing equipment. The crushing bin is arranged on the rack, a feeding hopper is arranged at the top of the crushing bin, and a discharging bin is arranged at the bottom of the crushing bin; the screening barrel is rotationally connected into the crushing bin, an opening matched with the feeding hopper is formed in the side wall of the screening barrel, and a plurality of baffles are arranged on the inner wall of the screening barrel; the crushing rollers are arranged in the screening cylinder and rotationally connected with the crushing bin, and the crushing rollers are meshed with one another; the problems that in the traditional plastic product raw material crushing process, a screening machine needs to screen the crushed raw materials, so that the equipment cost is high, and the production efficiency is low are solved.

Description

Technical Field

[0001] The present application relates to the technical field of plastic product production and processing, and specifically discloses a plastic product raw material crushing device. Background Art

[0002] In the production process of plastic products, raw material crushing is a crucial step, which is directly related to the quality and production efficiency of subsequent products. Common raw material crushing methods include chip crushing, grinding crushing and crushing crushing, among which crushing crushing is to deform and break the plastic raw materials by applying pressure, so as to achieve the purpose of crushing. The crushing crusher usually adopts a roller structure, with a certain gap between the two rollers, and the plastic raw materials are squeezed and crushed when passing through the gap.

[0003] After the raw materials are crushed, in order to ensure the quality and efficiency of the subsequent production process, the crushed particles need to be screened so that large particles with unqualified diameters can be re-entered into the crusher for secondary or multiple crushing. Usually, the screening process is the next process after crushing, that is, the crushed raw materials are passed into the screening machine for screening, and the screened raw materials are passed to the next station through a conveyor belt or returned to the crusher.

[0004] The processing method of first crushing and then screening requires a crusher, a screening machine and a conveyor belt for transportation. The production site occupies a large space and the equipment cost is high. In addition, the raw materials are exposed during transportation and are easily contaminated or adhered to the surface of other parts due to static electricity. In addition, this processing method is inefficient. Usually, all raw materials of a batch are crushed, then screened and large particles with unqualified diameters are returned. Therefore, in view of this, the inventor provides a plastic product raw material crushing equipment to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the traditional plastic product raw material crushing process, a screening machine is needed to screen the crushed raw materials, resulting in high equipment cost and low production efficiency.

[0006] In order to achieve the above object, the basic scheme of the present invention provides a plastic product raw material crushing equipment, comprising:

[0007] frame;

[0008] A crushing bin is arranged on the frame, a feed hopper is arranged on the top of the crushing bin, and a discharge bin is arranged at the bottom of the crushing bin;

[0009] A screening cylinder rotatably connected to the crushing bin, wherein the side wall of the screening cylinder is provided with an opening adapted to the feed hopper, and the inner wall of the screening cylinder is provided with a plurality of baffles;

[0010] A crushing roller disposed inside the screening cylinder and rotatably connected to the crushing bin, the crushing rollers intermeshing with each other;

[0011] A driving mechanism for driving the screening drum and the crushing roller to rotate.

[0012] The principles and effects of this basic solution are:

[0013] Compared with the prior art, the present invention not only drives the crushing roller to rotate through the driving mechanism, but also drives the screening drum to rotate through the driving mechanism, so that the crushed material falls to the inner wall of the screening drum for screening, and the baffle is set to drive the large particles with unqualified diameters to fall again to the top of the crushing roller for secondary crushing. The present invention promptly separates the materials that do not meet the crushing requirements and returns them to the crushing bin for re-crushing, avoiding repeated processing and improving production efficiency. It ensures that only particles that meet specific size requirements enter the subsequent production process. In this way, the uniformity and consistency of the final product can be guaranteed. It solves the problem that in the traditional plastic product raw material crushing process, a screening machine is required to screen the crushed raw materials, resulting in high equipment cost and low production efficiency.

[0014] Furthermore, one end of the screening cylinder is provided with a rotating disk rotatably connected to the inner wall of the crushing bin, and the other end of the screening cylinder is provided with an opening rotatably connected to the inner wall of the crushing bin;

[0015] One end of the screening roller passes through the opening and is rotatably connected to the inner wall of the crushing bin, and a limiting plate rotatably connected to the other end of the screening roller is provided on the side wall of the rotating disk.

[0016] This arrangement ensures the rotational connection and coordination between the crushing roller and the screening drum, avoids interference in relative motion between the crushing roller and the screening drum, and ensures the normal crushing of the plastic product raw materials.

[0017] Furthermore, the driving mechanism comprises:

[0018] Power parts;

[0019] A first gear pair is disposed between the two pulverizing rollers and meshes with each other, and the output shaft of the power member is transmission-connected with the driving gear in the first gear pair;

[0020] A rotating shaft rotatably connected to the limiting plate and driving the screening drum to rotate;

[0021] A second gear pair is disposed between one of the pulverizing rollers and the rotating shaft.

[0022] With this arrangement, the power element drives the two crushing rollers to rotate relative to each other, and also utilizes the rotation of one of the crushing rollers to drive the rotating shaft to rotate, thereby driving the screening drum to rotate, thereby improving the stability of the overall structure and reducing equipment costs and control costs.

[0023] Furthermore, a conversion assembly for driving the screening drum to swing back and forth is provided between the rotating shaft and the screening drum. The screening drum is driven to swing back and forth by the conversion assembly to avoid the problem that the opening of the screening drum corresponds to the position of the discharge hopper at the bottom of the feed bin during the rotation of the screening drum, resulting in the crushed material being directly discharged from the discharge hopper. At the same time, the reciprocating swing of the screening drum can improve the screening effect of the material accumulated in the screening drum, and avoid the material from accumulating on the inner wall of the screening drum.

[0024] Further, the conversion component includes:

[0025] A sliding frame slidably connected to the frame;

[0026] A first rack and a second rack are respectively arranged at the bottom and the top of the sliding frame;

[0027] A fan gear coaxially connected to the rotating shaft and capable of intermittently meshing with the first rack and the second rack;

[0028] A sleeve is coaxially connected to the rotating disk, and a conversion gear is provided on the sleeve and is continuously meshed with the first rack.

[0029] With this arrangement, the rotating shaft is driven by one of the crushing rollers to rotate, thereby driving the fan gear to rotate. During the intermittent meshing of the fan gear with the first rack and the second rack, the sliding frame is driven to slide back and forth, and the second rack also slides back and forth in the process. By utilizing the meshing relationship between the second rack and the conversion gear, the conversion gear, sleeve and turntable can be driven to swing back and forth, that is, the screening drum is driven to swing back and forth.

[0030] Furthermore, the sleeve is sleeved on the outer wall of the rotating shaft, and the rotating shaft passes through the sleeve and is rotatably connected to the limit plate. This arrangement is more compact and can avoid the problem of mutual interference between the sleeve and the rotating shaft.

[0031] Furthermore, the baffle is symmetrically inclined along the axis of the screening drum, and the baffle faces the opening. With this arrangement, during the reciprocating swing of the screening drum, the large particles of plastic product raw materials accumulated at the bottom of the screening drum roll to the acute angle formed between the baffle and the inner wall of the screening drum, thereby driving the large particles of plastic product raw materials to enter the upper part of the crushing roller through the action of the baffle.

[0032] Furthermore, the screening drum and the crushing roller are eccentrically arranged, the distance between the top of the screening drum and the crushing roller is smaller than the distance between the bottom of the screening drum and the crushing roller, and the inner wall of the opening of the screening drum is symmetrically provided with extrusion blocks. This arrangement makes it possible for the extrusion blocks to squeeze the plastic product raw materials on the crushing roller during the reciprocating swing of the screening drum, thereby preventing the plastic product raw materials from staying on the crushing roller for a long time and affecting the normal crushing process.

[0033] Based on the same inventive concept, the present invention provides a method for crushing plastic product raw materials, including crushing the plastic product raw materials using the raw material crushing equipment mentioned above.

[0034] Further, the steps of crushing the plastic product raw material using the raw material crushing equipment according to any one of claims 1 to 8 are as follows:

[0035] Step S1, feeding the plastic product raw material into the crushing bin through the feed port at the top of the crushing bin;

[0036] Step S2, the driving mechanism drives the two crushing rollers to rotate, and the two crushing rollers engage with each other to crush the plastic product raw materials in the crushing bin;

[0037] Step S3, the crushed materials fall to the inner wall of the screening drum for screening, and the large particles of materials with unqualified diameters are driven by the baffle to fall again to the top of the crushing roller for secondary crushing;

[0038] Step S4, the crushed material falls from the discharge bin at the bottom of the crushing bin.

[0039] Compared with the prior art, the present invention not only drives the crushing roller to rotate through the driving mechanism, but also drives the screening drum to rotate through the driving mechanism, so that the crushed material falls to the inner wall of the screening drum for screening, and the baffle is set to drive the large particles with unqualified diameters to fall again to the top of the crushing roller for secondary crushing. The present invention promptly separates the materials that do not meet the crushing requirements and returns them to the crushing bin for re-crushing, thereby avoiding repeated processing and improving production efficiency. It ensures that only particles that meet specific size requirements enter the subsequent production process. The present invention can ensure the uniformity and consistency of the final product. It solves the problem that in the traditional plastic product raw material crushing process, a screening machine is required to screen the crushed raw materials, resulting in high equipment cost and low production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A schematic diagram of a plastic product raw material crushing device proposed in an embodiment of the present application is shown;

[0042] Figure 2 A top view of a plastic product raw material crushing device proposed in an embodiment of the present application is shown;

[0043] Figure 3 The figure shows the interior of a crushing bin in a plastic product raw material crushing device proposed in an embodiment of the present application;

[0044] Figure 4 A schematic diagram of the transmission of a rotating shaft and a crushing roller in a plastic product raw material crushing device proposed in an embodiment of the present application is shown;

[0045] Figure 5 A schematic diagram of one side of a screening cylinder in a plastic product raw material crushing device proposed in an embodiment of the present application is shown;

[0046] Figure 6 A schematic diagram of one side of a conversion component in a plastic product raw material crushing device proposed in an embodiment of the present application is shown;

[0047] Figure 7 A schematic diagram of the other side of a conversion component in a plastic product raw material crushing device proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0048] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0049] The reference numerals in the drawings of the specification include: frame 1, crushing bin 2, servo motor 3, crushing roller 4, roller shaft 5, fixed box 6, sleeve 7, screening cylinder 8, extrusion block 9, baffle 10, limit plate 11, second gear pair 12, rotating shaft 13, rotating disk 14, sliding frame 15, fan gear 16, conversion gear 17, first rack 18, second rack 19.

[0050] A plastic product raw material crushing device, for example Figures 1 to 3 As shown: it includes a frame 1, a crushing bin 2 arranged on the frame 1, a screening drum 8 rotatably connected to the crushing bin 2, a crushing roller 4 arranged inside the screening drum 8 and rotatably connected to the crushing bin 2, and a driving mechanism for driving the screening drum 8 and the crushing roller 4 to rotate.

[0051] The frame 1 is formed by welding and fixing multiple sections of channel steel, and supported by legs. A feed hopper is provided on the top of the crushing bin 2, and a discharge bin is provided at the bottom of the crushing bin 2. The side wall of the screening drum 8 is provided with an opening adapted to the feed hopper, and the inner wall of the screening drum 8 is provided with a plurality of baffles 10. The baffles 10 are symmetrically inclined along the axis of the screening drum 8, and the baffles 10 face the opening, so that an acute angle is formed between the baffles 10 and the inner walls of the screening drum 8 on both sides. The screening drum 8 is eccentrically arranged with the crushing roller 4, and the distance between the top of the screening drum 8 and the crushing roller 4 is smaller than the distance between the bottom of the screening drum 8 and the crushing roller 4. The inner wall of the opening of the screening drum 8 is symmetrically provided with extrusion blocks 9. The two crushing rollers 4 are interlocked with each other and are respectively connected by two roller shafts 5.

[0052] like Figure 4 and Figure 5 As shown, in this embodiment, a rotating disk 14 rotatably connected to the inner wall of the crushing bin 2 is provided at the rear end of the screening drum 8, and an opening rotatably connected to the inner wall of the crushing bin 2 is provided at the front end of the screening drum 8; the front ends of the screening rollers are rotatably connected to the inner wall of the crushing bin 2 through the opening, and a limiting plate 11 rotatably connected to the other end of the screening roller is provided on the side wall of the rotating disk 14. The limiting plate 11 is rotatably connected to the rotating disk 14 relative to each other and is limited by the roller shaft 5.

[0053] The driving mechanism includes a power member, a first gear pair disposed between the two crushing rollers 4 and meshing with each other, a rotating shaft 13 rotatably connected to the limit plate 11 and driving the screening drum 8 to rotate, a second gear pair 12 disposed between one of the crushing rollers 4 and the rotating shaft 13, and a conversion assembly disposed between the rotating shaft 13 and the screening drum 8 and driving the screening drum 8 to swing back and forth. The power member adopts a servo motor 3, and the output shaft of the power member is connected to the driving gear in the first gear pair by belt drive.

[0054] The frame 1 is provided with a fixed box 6 located at the back of the crushing bin 2. Figure 6 and Figure 7 As shown, the conversion assembly includes a sliding frame 15 slidably connected to the fixed box 6, a first rack 18 and a second rack 19 respectively arranged at the bottom and the top of the sliding frame 15, a fan gear 16 coaxially connected to the rotating shaft 13 and intermittently meshing with the first rack 18 and the second rack 19, and a sleeve 7 coaxially connected to the rotating disk 14, the sleeve 7 is provided with a conversion gear 17 continuously meshing with the first rack 18, the sleeve 7 is sleeved on the outer wall of the rotating shaft 13, the rotating shaft 13 passes through the sleeve 7 and is rotatably connected to the limit plate 11.

[0055] In this embodiment, the plastic product raw material is introduced into the feed bin through the feed hopper on the top of the crushing bin 2, and the servo motor 3 is started. The servo motor 3 drives one of the crushing rollers 4 to rotate through a belt transmission. The mutual meshing of the first gear pair between the two crushing rollers 4 makes the two crushing rollers 4 mesh with each other to crush the plastic product raw material in the crushing bin 2, and the crushed materials fall to the inner wall of the screening drum 8 for screening; at the same time, one of the crushing rollers 4 drives the rotating shaft 13 to rotate through the second gear pair 12, thereby driving the fan gear 16 to rotate, and in the process of intermittent meshing of the fan gear 16 with the first rack 18 and the second rack 19, the sliding frame 15 is driven to slide back and forth, and the second rack 19 also slides back and forth in the process, and the meshing relationship between the second rack 19 and the conversion gear 17 is used to make the conversion gear 17 reciprocate The swing, which can drive the conversion gear 17, the sleeve 7 and the turntable to swing back and forth, that is, drive the screening drum 8 to swing back and forth, so that the material on the inner wall of the screening drum 8 is vibrated and screened, so as to Figure 3 For example, when the screening drum 8 rotates clockwise, the large particles originally accumulated at the bottom of the screening drum 8 fall from the surface of the baffle 10 on the right side to the acute angle formed between the inner walls of the screening drum 8, thereby driving the large particles of plastic product raw materials to enter the top of the crushing roller 4 through the action of the baffle 10, and vice versa, so that the large particles of materials with unqualified diameters are driven by the baffle 10 to fall again to the top of the crushing roller 4 for secondary crushing. The crushed materials can fall from the discharge bin at the bottom of the crushing bin 2.

[0056] Based on the same inventive concept, this embodiment provides a method for crushing plastic product raw materials, including crushing the plastic product raw materials using the raw material crushing equipment described above, and the steps are as follows:

[0057] Step S1, plastic product raw materials are fed into the feed bin through the feed hopper at the top of the crushing bin 2.

[0058] Step S2, start the servo motor 3, and the servo motor 3 drives one of the crushing rollers 4 to rotate through a belt drive. The mutual engagement of the first gear pair between the two crushing rollers 4 enables the two crushing rollers 4 to mesh with each other to crush the plastic product raw materials in the crushing bin 2, and the crushed materials fall to the inner wall of the screening drum 8 for screening.

[0059] In step S3, one of the crushing rollers 4 drives the rotating shaft 13 to rotate through the second gear pair 12, thereby driving the fan gear 16 to rotate. During the intermittent meshing of the fan gear 16 with the first rack 18 and the second rack 19, the sliding frame 15 is driven to slide back and forth, and the second rack 19 also slides back and forth during the process. By utilizing the meshing relationship between the second rack 19 and the conversion gear 17, the conversion gear 17 is reciprocated to swing, which can drive the conversion gear 17, the sleeve 7 and the turntable to swing back and forth, that is, drive the screening drum 8 to swing back and forth, so as to vibrate and screen the materials on the inner wall of the screening drum 8, so as to Figure 3 For example, when the screening drum 8 rotates clockwise, the large particles originally accumulated at the bottom of the screening drum 8 fall from the surface of the baffle 10 on the right to the acute angle formed between the inner walls of the screening drum 8, thereby driving the large particles of plastic product raw materials to enter the top of the crushing roller 4 through the action of the baffle 10, and vice versa, so that the large particles of materials with unqualified diameters are driven by the baffle 10 to fall again to the top of the crushing roller 4 for secondary crushing.

[0060] Step S4, the crushed material falls from the discharge bin at the bottom of the crushing bin 2.

[0061] Compared with the prior art, the present invention not only drives the crushing roller 4 to rotate by the driving mechanism, but also drives the screening drum 8 to rotate by the driving mechanism, so that the crushed material falls to the inner wall of the screening drum 8 for screening, and the baffle 10 is used to drive the large particles with unqualified diameters to fall again to the top of the crushing roller 4 for secondary crushing. The present invention promptly separates the materials that do not meet the crushing requirements and returns them to the crushing bin 2 for re-crushing, thereby avoiding repeated processing and improving production efficiency. It ensures that only particles that meet specific size requirements enter the subsequent production process. The present invention can ensure the uniformity and consistency of the final product. It solves the problem that in the traditional crushing process of plastic product raw materials, a screening machine is required to screen the crushed raw materials, resulting in high equipment cost and low production efficiency.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A plastic product raw material crushing equipment, characterized in that: include: frame; A crushing bin is arranged on the frame, a feed hopper is arranged on the top of the crushing bin, and a discharge bin is arranged at the bottom of the crushing bin; A screening cylinder rotatably connected to the crushing bin, wherein the side wall of the screening cylinder is provided with an opening adapted to the feed hopper, and the inner wall of the screening cylinder is provided with a plurality of baffles; A crushing roller disposed inside the screening cylinder and rotatably connected to the crushing bin, the crushing rollers intermeshing with each other; A driving mechanism for driving the screening drum and the crushing roller to rotate.

2. A plastic product raw material crushing equipment according to claim 1, characterized in that: One end of the screening cylinder is provided with a rotating disk rotatably connected to the inner wall of the crushing bin, and the other end of the screening cylinder is provided with an opening rotatably connected to the inner wall of the crushing bin; One end of the screening roller passes through the opening and is rotatably connected to the inner wall of the crushing bin, and a limit plate rotatably connected to the other end of the screening roller is provided on the side wall of the rotating disk.

3. A plastic product raw material crushing equipment according to claim 2, characterized in that: The driving mechanism comprises: Power parts; A first gear pair is disposed between the two pulverizing rollers and meshes with each other, and the output shaft of the power member is transmission-connected with the driving gear in the first gear pair; A rotating shaft rotatably connected to the limiting plate and driving the screening drum to rotate; A second gear pair is disposed between one of the pulverizing rollers and the rotating shaft.

4. A plastic product raw material crushing equipment according to claim 3, characterized in that: A conversion assembly for driving the screening drum to swing back and forth is also provided between the rotating shaft and the screening drum.

5. The plastic product raw material crushing equipment according to claim 4, characterized in that: The conversion component includes: A sliding frame slidably connected to the frame; a first rack and a second rack respectively disposed at the bottom and the top of the sliding frame; A fan gear coaxially connected to the rotating shaft and capable of intermittently meshing with the first rack and the second rack; A sleeve is coaxially connected to the rotating disk, and a conversion gear is provided on the sleeve and is continuously meshed with the first rack.

6. The plastic product raw material crushing equipment according to claim 5, characterized in that: The sleeve is sleeved on the outer wall of the rotating shaft, and the rotating shaft passes through the sleeve and is rotatably connected to the limiting plate.

7. The plastic product raw material crushing equipment according to claim 1, characterized in that: The baffle is symmetrically and tiltedly arranged along the axis of the screening drum, and the baffle faces the opening.

8. The plastic product raw material crushing equipment according to claim 7, characterized in that: The screening drum and the crushing roller are eccentrically arranged, the distance between the top of the screening drum and the crushing roller is smaller than the distance between the bottom of the screening drum and the crushing roller, and extrusion blocks are symmetrically arranged on the inner wall of the opening of the screening drum.

9. A method for crushing raw materials of plastic products, characterized in that: The method comprises using the raw material crushing equipment described in any one of claims 1 to 8 to crush the raw materials of plastic products.

10. A method for crushing raw materials for plastic products according to claim 9, characterized in that: The steps of crushing the plastic product raw material using the raw material crushing equipment according to any one of claims 1 to 8 are as follows: Step S1, feeding the plastic product raw material into the crushing bin through the feed port at the top of the crushing bin; Step S2, the driving mechanism drives the two crushing rollers to rotate, and the two crushing rollers engage with each other to crush the plastic product raw materials in the crushing bin; Step S3, the crushed materials fall to the inner wall of the screening drum for screening, and the large particles of materials with unqualified diameters are driven by the baffle to fall again to the top of the crushing roller for secondary crushing; Step S4, the crushed material falls from the discharge bin at the bottom of the crushing bin.

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