Crusher for EVA colloidal particle production

Abstract

The utility model relates to the technical field of EVA (Ethylene Vinyl Acetate) colloidal particle production, and discloses a crusher for EVA colloidal particle production, which comprises a box body, the top of the box body is fixedly connected with a feeding cylinder, the bottom of the box body is fixedly connected with a discharging cylinder, the front side and the rear side of the box body are fixedly connected with fixing blocks in a bilateral symmetry manner, and the bottoms of the four fixing blocks are fixedly connected with supporting legs. A cutting mechanism is arranged on the front face of the box body, a crushing mechanism is arranged on the left side of the box body, the cutting mechanism comprises a fixing frame, the fixing frame is fixedly connected to the position, close to the top, of the front face of the box body, and crankshafts are rotationally connected to the positions, close to the front face, of the left side and the right side in the fixing frame. After an EVA sizing material enters the box body through the feeding cylinder, a first motor in the cutting mechanism drives a crankshaft to rotate, a cutting knife reciprocates back and forth in the box body through transmission of the crank and a hinge frame, the sizing material is preliminarily cut in cooperation with a knife groove in a fixed seat, and large materials are decomposed into small blocks.

Description

Technical Field

[0001] This utility model relates to the field of EVA granule production technology, specifically to a crusher for EVA granule production. Background Technology

[0002] Ethylene-vinyl acetate copolymer (EVA) granules are widely used in footwear, packaging, toys, and hot melt adhesives due to their excellent flexibility, elasticity, chemical resistance, and processing properties. In EVA production, raw material crushing is a critical step, directly affecting subsequent processing efficiency and product quality. Traditional EVA raw materials typically exist in block or large particle form and must be crushed into uniform, fine granules to facilitate subsequent processing such as melt extrusion and granulation.

[0003] According to announcement number CN 209521148 U, a high-efficiency crusher for EVA granule production includes a main body. The inner cavity of the main body is provided with a partition, a first screen, and a second screen from top to bottom. A crushing chamber is provided between the partition and the first screen. A first motor is located at the top of the main body. A first rotating rod is installed at the output end of the first motor, and the first rotating rod extends through the main body and the partition into the crushing chamber. A spiral blade is fixedly connected to the first rotating rod inside the crushing chamber. A first gear is located above the partition, and the first gear is fixedly connected to the first rotating rod. The first gear meshes with a second gear, and the second gear is fixedly connected to a rotating rod. The bottom end of the rotating rod extends through the partition into the crushing chamber, and the rotating rod is located on both sides of the first rotating rod. Crushing blades are fixedly connected to the rotating rod inside the crushing chamber.

[0004] This device, equipped with a first motor, a first rotating rod, and spiral crushing blades, is used to pre-crush EVA raw materials and push the raw materials into the crushing chamber, preventing blockage at the feed inlet. The spiral blades ensure uniform dispersion of the raw materials within the crushing chamber and circulate them to the upper part for further crushing by the blades. The blades also circulate and crush materials that do not conform to the specified particle size. However, when this device uses only a single crushing method, it is difficult to achieve uniform and thorough crushing. The crushed particles exhibit significant size variations, containing numerous large pieces and fine powder. This not only affects the stability of subsequent production processes but may also lead to a decline in product quality. Utility Model Content

[0005] The purpose of this invention is to provide a crusher for EVA granule production to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crusher for EVA granule production, comprising a housing, a feed cylinder fixedly connected to the top of the housing, a discharge cylinder fixedly connected to the bottom of the housing, fixed blocks symmetrically fixedly connected to the front and rear sides of the housing, support legs fixedly connected to the bottom of the four fixed blocks, a cutting mechanism provided on the front of the housing, and a crushing mechanism provided on the left side of the housing.

[0007] The cutting mechanism includes a fixed frame, which is fixedly connected to the front of the housing near the top. Crankshafts are rotatably connected to the left and right sides of the fixed frame near the front. A first motor is fixedly connected to the right side of the fixed frame near the front. Cranks are symmetrically rotatably connected to the surface of the crankshaft. A hinge frame is hinged to the rear end of the crank. A moving rod is fixedly connected to the back of the hinge frame. A cutting blade is fixedly connected to the rear end of the moving rod. A fixed seat is fixedly connected to the top of the inner wall of the housing near the back. A blade groove corresponding to the cutting blade is opened on the front of the fixed seat. Fixed plates are fixedly connected to the left and right sides of the inner wall of the fixed frame near the back.

[0008] Preferably, the output end of the first motor is fixedly connected to the right end of the crankshaft, and a hole matching the moving rod is opened on the front side of the housing near the top, and the moving rod is slidably connected to the hole through the surface and back and forth, and the cutting blade moves back and forth inside the housing.

[0009] Preferably, the fixed plate has a hole on its front side that matches the moving rod, and the moving rod is slidably connected to the hole by passing through its surface. The hole on the front side of the moving rod limits the movement of the moving rod, so that the moving rod can only move back and forth.

[0010] Preferably, the crushing mechanism includes an L-plate, which is fixedly connected to the front left side of the box body. A second motor is fixedly connected to the left side of the L-plate. A first blade roller is rotatably connected to the right side of the inner wall of the box body near the front. A second blade roller is rotatably connected to the right side of the inner wall of the box body near the back. A first gear is fixedly connected to the surface of the first blade roller near the left end. A second gear is fixedly connected to the surface of the second blade roller near the left end.

[0011] Preferably, holes matching the first and second blade rollers are opened on the front and rear sides of the left side of the housing, and the surfaces of the first and second blade rollers pass through and are rotatably connected in the holes.

[0012] Preferably, the first blade roller and the second blade roller are symmetrically distributed inside the housing, and the blades on the surface of the first blade roller and the blades on the surface of the second blade roller intersect each other, which can better crush the material.

[0013] Preferably, the output end of the second motor is fixedly connected to the left end of the first blade roller, and the first gear meshes with the second gear.

[0014] Compared with the prior art, this utility model provides a crusher for EVA granule production, which has the following beneficial effects:

[0015] In this EVA granule production crusher, after the EVA material enters the box through the feed cylinder, the first motor in the cutting mechanism drives the crankshaft to rotate. Through the transmission of the crank and the hinge frame, the cutting blade moves back and forth in the box. In conjunction with the blade groove on the fixed seat, the material is initially cut, breaking down large pieces of material into smaller pieces.

[0016] The crusher for EVA granule production has a second motor in the crushing mechanism that drives the first blade roller to rotate. Through the meshing of the first and second gears, the first and second blade rollers rotate in opposite directions, and the blades distributed crosswise on their surfaces further crush the initially cut rubber material. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 This is a three-dimensional cross-sectional view of the right side of the structural box of this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the crankshaft and fixing plate of this utility model;

[0021] Figure 4 This is a three-dimensional cross-sectional view of the top of the structural box of this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the first and second blade rollers of the present invention.

[0023] In the diagram: 1. Housing; 2. Feed cylinder; 3. Discharge cylinder; 4. Fixing block; 5. Support leg; 6. Cutting mechanism; 61. Fixing frame; 62. Crankshaft; 63. First motor; 64. Crank; 65. Hinge frame; 66. Moving rod; 67. Cutting blade; 68. Fixing seat; 69. Blade groove; 611. Fixing plate; 7. Crushing mechanism; 71. L-plate; 72. Second motor; 73. First blade roller; 74. Second blade roller; 75. First gear; 76. Second gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] This utility model provides the following technical solution: Example 1

[0027] Please see Figure 1-3 This utility model provides a technical solution: a crusher for EVA granule production, including a box body 1, a feed cylinder 2 fixedly connected to the top of the box body 1, a discharge cylinder 3 fixedly connected to the bottom of the box body 1, fixed blocks 4 symmetrically fixedly connected to the front and rear sides of the box body 1, support legs 5 fixedly connected to the bottom of the four fixed blocks 4, a cutting mechanism 6 provided on the front of the box body 1, and a crushing mechanism 7 provided on the left side of the box body 1.

[0028] The cutting mechanism 6 includes a fixed frame 61, which is fixedly connected to the front of the housing 1 near the top. Crankshafts 62 are rotatably connected to the left and right sides of the fixed frame 61 near the front. A first motor 63 is fixedly connected to the right side of the fixed frame 61 near the front. Cranks 64 are symmetrically rotatably connected to the surface of the crankshaft 62. A hinge frame 65 is hinged to the rear end of the crank 64. A moving rod 66 is fixedly connected to the back of the hinge frame 65. A cutting blade 67 is fixedly connected to the rear end of the moving rod 66. A fixed seat 68 is fixedly connected to the top of the inner wall of the housing 1 near the back. A blade groove 69 corresponding to the cutting blade 67 is opened on the front of the fixed seat 68. Fixed plates 611 are fixedly connected to the left and right sides of the inner wall of the fixed frame 61 near the back.

[0029] The output end of the first motor 63 is fixedly connected to the right end of the crankshaft 62. A hole matching the moving rod 66 is opened on the front of the housing 1 near the top. The moving rod 66 passes through the surface and slides back and forth in the hole. The cutting blade 67 moves back and forth inside the housing 1.

[0030] The fixed plate 611 has a hole on its front side that matches the movable rod 66. The movable rod 66 passes through the surface of the plate and slides back and forth in the hole. The hole on the front side of the movable rod 66 limits the movable rod 66 so that it can only move back and forth. Example 2

[0031] Please see Figure 4-5 Furthermore, based on Example 1, a crushing mechanism 7 was obtained.

[0032] The crushing mechanism 7 includes an L-plate 71, which is fixedly connected to the front left side of the housing 1. A second motor 72 is fixedly connected to the left side of the L-plate 71. A first blade roller 73 is rotatably connected to the right side of the inner wall of the housing 1 near the front. A second blade roller 74 is rotatably connected to the right side of the inner wall of the housing 1 near the back. A first gear 75 is fixedly connected to the surface of the first blade roller 73 near the left end. A second gear 76 is fixedly connected to the surface of the second blade roller 74 near the left end.

[0033] Holes are opened on the front and rear sides of the left side of the housing 1 to match the first blade roller 73 and the second blade roller 74, and the surfaces of the first blade roller 73 and the second blade roller 74 pass through and are rotatably connected in the holes.

[0034] The first blade roller 73 and the second blade roller 74 are symmetrically distributed inside the housing 1, and the blades on the surface of the first blade roller 73 and the blades on the surface of the second blade roller 74 intersect each other, which can better crush the material.

[0035] The output end of the second motor 72 is fixedly connected to the left end of the first blade roller 73, and the first gear 75 meshes with the second gear 76.

[0036] In actual operation, when this device is used and the equipment is started, the first motor 63 in the cutting mechanism 6 begins to operate. The output end of the first motor 63 is fixedly connected to the right end of the crankshaft 62. Therefore, the power output by the first motor 63 is directly transmitted to the crankshaft 62, causing the crankshaft 62 to rotate on both sides of the fixed frame 61 near the front. As the crankshaft 62 rotates, the cranks 64, which are fixedly connected to the left and right symmetrical positions on the surface of the crankshaft 62, also move accordingly. Since the cranks 64 are rotatably connected to the crankshaft 62, the rotation of the crankshaft 62 will drive the cranks 64 to perform circular motion. The rear end of the cranks 64 is hinged to the hinge frame 65, and the back of the hinge frame 65 is fixedly connected to the moving rod 66. When the cranks 64 perform circular motion, they will push the moving rod 66 to perform reciprocating motion through the hinge frame 65. The fixing plates 611 on the left and right sides of the inner wall of the fixing frame 61 near the back, and the holes on the front of the box 1 near the top that match the moving rod 66, together guide and limit the moving rod 66, ensuring that the moving rod 66 can only move back and forth without deviation or shaking. The rear end of the moving rod 66 is fixedly connected to the cutting blade 67. As the moving rod 66 moves back and forth, the cutting blade 67 also moves back and forth inside the box 1. When the raw material enters the box 1 from the feed cylinder 2, the cutting blade 67 cuts the raw material into pieces of appropriate size during its back and forth movement, so as to facilitate subsequent crushing. At the same time, the fixing seat 68 fixedly connected to the top of the inner wall of the box 1 near the back has a corresponding blade groove 69. When the cutting blade 67 moves backward, the blade groove 69 can accommodate the cutting blade 67, preventing the cutting blade 67 from colliding with the fixing seat 68 and ensuring the smooth progress of the cutting process.

[0037] The second motor 72 in the crushing mechanism 7 is fixedly connected to the L-plate 71, which in turn is fixedly connected to the front left side of the housing 1. When the second motor 72 starts, its output end is directly fixedly connected to the left end of the first blade roller 73, transmitting power to the first blade roller 73. This causes the first blade roller 73 to rotate on the right side of the inner wall of the housing 1, near the front. A first gear 75 is fixedly connected to the surface of the first blade roller 73 near the left end, and a second gear 76 is fixedly connected to the surface of the second blade roller 74 near the left end, with the first gear 75 meshing with the second gear 76. When the first blade roller 73 rotates, the first gear 75 also rotates, driving the second gear 76 to rotate in the opposite direction through gear meshing. This causes the second blade roller 74 to rotate in the opposite direction on the right side of the inner wall of the housing 1, near the back. In this way, the first blade roller 73 and the second blade roller 74 achieve synchronous reverse rotation. The first blade roller 73 and the second blade roller 74 are symmetrically distributed inside the housing 1, with the blades on their surfaces intersecting. After being cut by the cutting mechanism 6, the material falls between the two blade rollers. As the two blade rollers rotate synchronously in opposite directions, the material is subjected to strong shearing, squeezing, and tearing forces between them, thus being broken into smaller particles. The broken EVA granules are finally discharged from the discharge cylinder 3 at the bottom of the housing 1, completing the entire crushing process.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A crusher for EVA bead production comprising a housing (1), characterized in that: The box (1) top fixedly connected with feeding cylinder (2), the box (1) bottom fixedly connected with discharge cylinder (3), the box (1) front and rear two sides left and right symmetrically fixedly connected with fixed block (4), four the fixed block (4) bottom fixedly connected with support leg (5), the box (1) front is provided with cutting mechanism (6), the box (1) left side is provided with broken mechanism (7); The cutting mechanism (6) includes a fixed frame (61), the fixed frame (61) is fixedly connected to the front of the box (1) near the top, the fixed frame (61) is rotatably connected with a crankshaft (62) on the left and right sides near the front, the fixed frame (61) is fixedly connected with a first motor (63) on the right side near the front, the crankshaft (62) surface is rotatably connected with a crank (64) on the left and right sides, the crank (64) rear end is hingedly connected with a hinge frame (65), the hinge frame (65) back is fixedly connected with a moving rod (66), the moving rod (66) rear end is fixedly connected with a cutting knife (67), the box (1) inner wall top is fixedly connected with a fixed seat (68) near the back, the fixed seat (68) front is provided with a corresponding knife slot (69) of cutting knife (67), the fixed frame (61) inner wall left and right sides are fixedly connected with a fixed plate (611).

2. The crusher for EVA beads production according to claim 1, characterized in that: The first motor (63) output end is fixedly connected to the right end of the crankshaft (62), the box (1) front is provided with a hole matched with the moving rod (66) near the top, and the moving rod (66) surface penetrates and is connected in the hole with front and back sliding, the cutting knife (67) reciprocates in the box (1) inside.

3. The crusher for EVA beads production according to claim 1, characterized in that: The fixed plate (611) front is provided with a hole matched with the moving rod (66), and the moving rod (66) surface penetrates and is connected in the hole with front and back sliding.

4. The crusher for EVA beads production according to claim 1, characterized in that: The broken mechanism (7) includes an L plate (71), the L plate (71) is fixedly connected to the left side of the box (1), the L plate (71) is fixedly connected with a second motor (72) on the left side, the box (1) inner wall right side is rotatably connected with a first blade roll (73) near the front, the box (1) inner wall right side is rotatably connected with a second blade roll (74) near the back, the first blade roll (73) surface is fixedly connected with a first gear (75) near the left end, the second blade roll (74) surface is fixedly connected with a second gear (76) near the left end.

5. The crusher for EVA beads production as claimed in claim 4, wherein: The box (1) left side front and back two sides are provided with holes matched with the first blade roll (73) and the second blade roll (74), and the first blade roll (73) surface and the second blade roll (74) surface penetrate and are rotatably connected in the hole.

6. The crusher for EVA beads production as claimed in claim 4 wherein: The first blade roll (73) and the second blade roll (74) are symmetrically distributed in the box (1) with front and back, and the blades on the surface of the first blade roll (73) and the blades on the surface of the second blade roll (74) cross each other.

7. The crusher for EVA beads production as claimed in claim 4 wherein: The second motor (72) output end is fixedly connected to the left end of the first blade roll (73), the first gear (75) is engaged with the second gear (76).

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