Plastic crushing assembly

Abstract

The utility model belongs to the technical field of plastic crushing equipment, and discloses a plastic crushing assembly, which comprises a cutter bar with a cylindrical structure, a plurality of blades arranged along the length direction of the cutter bar and a cutter holder arranged on one side, far away from a cutting edge, of each blade, the cutter bar is coaxially and fixedly connected with a rotating shaft of a crusher, and all the blades are arranged at equal intervals. A plurality of fixing grooves connected with the tool aprons in an inserted mode are formed in the tool bar, fixing mechanisms capable of fixing the tool aprons into the fixing grooves are arranged on the tool aprons, and a control releasing mechanism capable of releasing the situation that the tool aprons are fixed into the fixing grooves is further arranged at the end of the tool bar. According to the utility model, the blade can be conveniently disassembled and assembled and cannot be loosened due to high-speed rotation of the blade, and meanwhile, a gap between the blade and the tool apron is covered, so that plastic dust is prevented from entering the gap to influence the matching of the blade and the tool apron.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic crushing equipment, and in particular relates to a plastic crushing component. Background Art

[0002] When recycling plastics, it is usually necessary to crush the plastics before recycling.

[0003] The blades of the existing plastic crusher will become blunt after being used for a period of time. Therefore, the crushing blades need to be replaced regularly when crushing plastic. The existing crushing blades are very troublesome to replace, and the replacement is time-consuming and labor-intensive, which affects the crushing efficiency.

[0004] Chinese patent authorization announcement number: CN213860192U, discloses a plastic crushing knife, including a blade, a knife seat and a handle, wherein the blade is provided in plurality, the knife seat is provided as a cylindrical sleeve seat, and the plurality of blades are evenly spaced and detachably fixed on the knife seat, the blade includes a blade and a knife body, and a connecting strip is provided at one end of the knife body away from the blade, and a connecting groove for accommodating and clamping the connecting strip is provided on the peripheral wall of the knife seat along its axial direction, and the connecting strip is inserted into the connecting groove by sliding along the axial direction of the knife seat, and a fixing piece for fixing the blade is provided on the knife seat, and the handle is detachably connected to one end of the knife seat away from the fixing piece. The present application has the effect of facilitating the staff to replace the blade in the crushing knife.

[0005] Although the above patent can easily replace the blade, there are still the following problems:

[0006] (1) The blade is fixed to the blade holder by the rotation of the fixing part. The connection between the fixing part and the blade holder is a threaded connection. When the blade is crushing, it will be driven by the rotating shaft to rotate at high speed. The high-speed rotation is used to crush the plastic. However, during crushing, the high-speed rotating shaft and the plastic will repeatedly impact and contact each other, which can easily cause the threaded connection between the fixing part and the blade holder to loosen. Once the fixing part is loose, it is very easy to cause damage to the blade.

[0007] (2) The knife holder and the blade are detachably connected, and there will be a gap between the two when they are connected. The gap is directly exposed to the outside and is easy for plastic powder to enter. Over time, it is easy to cause problems in the coordination between the knife holder and the blade. Utility Model Content

[0008] The utility model provides a plastic crushing component and a polyethylene screening device thereof, which can conveniently disassemble and assemble a blade, and the blade will not become loose due to high-speed rotation of the blade. At the same time, the gap between the blade and the blade seat is covered to prevent plastic dust from penetrating into the gap and affecting the cooperation between the two.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] Plastic shredder assembly, including:

[0011] The cutter bar, a cylindrical structure, is coaxially fixedly connected to the rotating shaft of the pulverizer;

[0012] There are multiple blades arranged, and all the blades are arranged at equal intervals along the length direction of the blade rod;

[0013] The knife seat is arranged on the side of the knife blade away from the cutting edge;

[0014] Wherein, the knife bar is provided with a plurality of fixing grooves for plugging into the knife seat;

[0015] The knife holder is provided with a fixing mechanism capable of fixing the knife holder into the fixing groove;

[0016] The end of the knife rod is provided with a release mechanism capable of releasing the knife seat from being fixed in the fixing groove.

[0017] Preferably, a plurality of heat dissipation holes are arranged on the blade.

[0018] Preferably, the shape of the fixing groove matches the bottom shape of the tool holder, and the matching clearance between the tool holder and the fixing groove is 0.02-0.05 mm.

[0019] Preferably, the fixing mechanism comprises:

[0020] A pressure block is arranged on the knife seat;

[0021] A sealing assembly is arranged at the bottom of the pressing block and can fit tightly with the knife rod;

[0022] An elastic connection mechanism, wherein the elastic connection mechanism is slidably connected to the fixing groove;

[0023] Wherein, the sealing component covers the gap between the knife seat and the fixing groove.

[0024] Preferably, the elastic connection mechanism comprises:

[0025] A mounting groove is arranged at one end of the knife seat;

[0026] A card block that slides freely in the mounting groove;

[0027] Wherein, a spring 1 is arranged between the clamping block and the bottom of the installation slot, and an end of the clamping block away from the spring 1 is arranged in a right-angle trapezoidal structure;

[0028] The notch of the fixing groove is provided with a chamfer which is slidably connected with the right-angle trapezoidal end of the clamping block.

[0029] Preferably, the sealing assembly comprises:

[0030] An upper cover is movably connected to the knife rod, and the upper cover is made of metal;

[0031] A buffer member is arranged inside the upper cover;

[0032] Wherein, the upper cover is an arc structure that fits the outer wall of the knife rod, and the buffer is a V-shaped sealing ring.

[0033] Preferably, the release mechanism includes:

[0034] The release control channel is arranged at the end of the cutter bar away from the rotating shaft of the pulverizer;

[0035] A release rod, threadedly connected to the release channel;

[0036] A connecting groove is arranged on the card block;

[0037] A blocking cover, covering the release channel;

[0038] Among them, the release channel, the release rod and the connecting groove are coaxial, and a transmission slider connected to each connecting groove and capable of being pushed by the release rod is also arranged in the tool rod, and a second spring is arranged on the transmission slider. The end of the tool rod is located at the position of the release channel and is provided with an embedding groove for embedding a blocking cover, and the blocking cover is fixed to the tool rod by an embedded screw.

[0039] Compared with the prior art, the beneficial effects of the utility model are:

[0040] (1) By arranging a fixing mechanism on the knife seat that can fix the knife seat in the fixing groove, the blade is fixed. By arranging a release mechanism at the end of the knife rod that can release the knife seat from the fixing groove, the blade can be easily disassembled, thereby achieving the purpose of convenient blade replacement.

[0041] (2) By arranging an upper cover on the knife seat and arranging a buffer member of a V-shaped sealing ring at the bottom of the upper cover, after the knife seat is installed, the upper cover and the V-shaped sealing member cover the gap between the blade and the knife seat to prevent dust and plastic powder from penetrating into the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0043] Figure 2 This is a schematic diagram of the structure of the knife bar of the utility model;

[0044] Figure 3 This is a schematic diagram of the structure of the blade of the utility model;

[0045] Figure 4 This is a schematic diagram of the internal structure of the knife holder of the utility model;

[0046] Figure 5It is a structural schematic diagram of the release control mechanism of the utility model.

[0047] Description of reference numerals:

[0048] 1- knife bar, 2- blade, 201- heat dissipation hole, 3- knife seat, 4- fixing groove, 5- pressure block, 7- installation groove, 8- clamping block, 9- spring 1, 10- upper cover, 11- buffer, 12- release channel, 13- release rod, 14- connection groove, 15- blocking cover, 16- transmission slider, 17- spring 2. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] Embodiment 1:

[0051] like Figures 1 to 5 As shown, the utility model adopts the following technical solutions:

[0052] The plastic crushing assembly includes a cylindrical tool rod 1, a plurality of blades 2 arranged along the length direction of the tool rod 1, and a tool holder 3 arranged on the side of the blade 2 away from the cutting edge. The tool rod 1 is coaxially fixedly connected to the rotating shaft of the crusher, all blades 2 are arranged at equal intervals, and a plurality of heat dissipation holes 201 are arranged on the blades 2, and the number of blades 2 shown in the figure is 5.

[0053] The tool rod 1 is provided with a plurality of fixing grooves 4 which are plugged into the tool holder 3. The shape of the fixing grooves 4 matches the bottom shape of the tool holder 3. The matching clearance between the tool holder 3 and the fixing grooves 4 is 0.02-0.05 mm, preferably 0.02 mm. The tool holder 3 is inserted into the fixing grooves 4 during use.

[0054] The knife seat 3 is provided with a fixing mechanism capable of fixing the knife seat 3 into the fixing groove 4 to fix the blade 2;

[0055] The end of the knife rod 1 is also provided with a release mechanism capable of releasing the knife holder 3 from being fixed in the fixing groove 4, so that the blade 2 can be easily disassembled, thereby achieving the purpose of facilitating the replacement of the blade 2.

[0056] Embodiment 2:

[0057] On the basis of Example 1 and Example 2, in order to more firmly fix the blade 2 on the arbor 1, specifically, the fixing mechanism includes a pressing block 5 arranged on the knife seat 3, a sealing component arranged at the bottom of the pressing block 5 and capable of fitting tightly with the knife rod 1, and an elastic connection mechanism slidably connected to the fixing groove 4, and the sealing component covers the gap between the knife seat 3 and the fixing groove 4 to prevent plastic powder and dust from entering the gap and damaging the fixing groove 4 during long-term use.

[0058] Among them, the elastic connection mechanism includes a mounting groove 7 arranged at one end of the knife seat 3, a block 8 sliding freely in the mounting groove 7, a spring 9 arranged between the block 8 and the bottom of the mounting groove 7, the end of the block 8 away from the spring 9 is arranged as a right-angled trapezoidal structure, and the notch of the fixed groove 4 is arranged with a chamfer slidably connected to the right-angled trapezoidal end of the block 8. When the block 8 approaches the fixed groove 4, it shrinks into the mounting groove 7 under the guidance of the chamfer, thereby placing the knife seat 3 into the fixed groove 4. When the block 8 completely enters the fixed groove 4, it continues to move the blade 2 downward. When the block 8 moves to the stepped groove section in the fixed groove 4, it is rebounded and reset by the spring 9 when it loses the obstruction of the groove wall of the fixed groove 4, thereby the block 8 is stuck in the fixed groove 4.

[0059] Among them, the sealing assembly includes an upper cover 10 movably connected to the knife rod 1 and a buffer 11 arranged inside the upper cover 10. The upper cover 10 is a metal material with an arc structure and fits the outer wall of the knife rod 1. The buffer 11 is a V-shaped sealing ring. The arrangement of the upper cover 10 and the buffer 11 can cover the gap between the knife seat 3 and the fixed groove 4 to prevent plastic powder or dust from entering the gap and affecting the cooperation between the two.

[0060] In order to more firmly fix the blade 2 on the arbor 1, a fastening screw is arranged on the upper cover 10, and the upper cover 10 is locked on the arbor 1 by the screw to further fix the blade 2. The fastening screw here is not coaxial with the rotating shaft, so there will be no problem of loosening due to rotation of the rotating shaft.

[0061] Embodiment 3:

[0062] On the basis of Example 2, in order to be able to remove the blade 2 from the knife rod 1, specifically, the release mechanism includes a release channel 12 arranged at one end of the knife rod 1 away from the rotating shaft of the crusher, a release rod 13 threadedly connected to the release channel 12, a connecting groove 14 arranged on the block 8, and a blocking cover 15 covering the release channel 12. In normal use, the blocking cover 15 covers the release channel 12 and is fixed to the knife rod 1 by screws. When the blade 2 needs to be removed, the blocking cover 15 is opened. The arrangement of the blocking cover 15 prevents plastic particles from entering the release channel;

[0063] Among them, the release channel 12, the release rod 13 and the connecting groove 14 are coaxial, and a transmission slider 16 connected to each connecting groove 14 and capable of being pushed by the release rod 13 is also arranged in the knife rod 1, and a spring 17 is arranged on the transmission slider 16. The end of the knife rod 1 is located at the position of the release channel 12 and is provided with an embedding groove for embedding a blocking cover 15. The blocking cover 15 is fixed to the knife rod 1 by an embedded screw. The blocking cover 15 needs to be opened only when the blade 2 needs to be removed, and then the release rod 13 is placed in the release channel 12. The release rod 13 is rotated to move it toward the inside of the knife rod 1, pushing the internal transmission slider 16 to move. The movement of the transmission slider 16 can push the block 8 to move, thereby facilitating the removal of the blade 2 from the fixed groove 4.

[0064] Working principle: When in use, insert the knife seat 3 into the fixed groove 4. The notch of the fixed groove 4 is arranged with a chamfer that is slidably connected to the right-angled trapezoidal end of the clamping block 8. Therefore, when the blade 2 is installed downward, the clamping block 8 is close to the fixed groove 4 and shrinks into the installation groove 7 under the guidance of the chamfer, so that the knife seat 3 is placed in the fixed groove 4. When the clamping block 8 is completely in the fixed groove 4, the blade 2 continues to be moved downward. When the clamping block 8 moves to the stepped groove section in the fixed groove 4, it is rebounded and reset by the spring 9 when it loses the obstruction of the groove wall of the fixed groove 4, so that the clamping block 8 is stuck in the fixed groove 4, and then the upper cover 10 is fixed to the knife rod 1 by screws to assist in the fixation of the blade 2.

[0065] When the blade 2 needs to be removed, first remove the screws on the upper cover 10, then remove the blocking cover 15, use the release rod 13 to put it into the release channel 12, and rotate the release rod 13 to move it toward the inside of the knife rod 1, pushing the internal transmission slider 16 to move. The movement of the transmission slider 16 can push the block 8 to move, and push the block 8 into the installation groove 7. At this time, the blade 2 can be pulled out.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. Plastic crushing component, characterized in that: include: The cutter bar (1) is a cylindrical structure coaxially fixedly connected to the rotating shaft of the pulverizer; A plurality of blades (2) are arranged, and all of the blades (2) are arranged at equal intervals along the length direction of the blade rod (1); A knife seat (3) is arranged on a side of each knife blade (2) away from the blade edge; Wherein, the knife rod (1) is provided with a plurality of fixing grooves (4) for plugging into the knife seat (3); The knife seat (3) is provided with a fixing mechanism capable of fixing the knife seat (3) in the fixing groove (4); The end of the knife rod (1) is provided with a release mechanism capable of releasing the knife seat (3) from being fixed in the fixing groove (4).

2. The plastic crushing assembly according to claim 1, characterized in that: A plurality of heat dissipation holes (201) are arranged on the blade (2).

3. The plastic crushing assembly according to claim 1, characterized in that: The shape of the fixing groove (4) matches the bottom shape of the knife seat (3), and the matching clearance between the knife seat (3) and the fixing groove (4) is 0.02-0.05 mm.

4. The plastic crushing assembly according to claim 3, characterized in that: The fixing mechanism comprises: A pressing block (5) is arranged on the knife seat (3); A sealing assembly is arranged at the bottom of the pressing block (5) and is able to fit tightly with the knife rod (1); An elastic connection mechanism, wherein the elastic connection mechanism is slidably connected to the fixing groove (4); Wherein, the sealing component covers the gap between the knife seat (3) and the fixing groove (4).

5. The plastic crushing assembly according to claim 4, characterized in that: The elastic connection mechanism comprises: A mounting groove (7) is arranged at one end of the knife seat (3); A card block (8), wherein the card block (8) slides freely in the mounting groove (7); Wherein, a spring 1 (9) is arranged between the clamping block (8) and the bottom of the mounting groove (7), and an end of the clamping block (8) away from the spring 1 (9) is arranged in a right-angle trapezoidal structure; The notch of the fixing groove (4) is provided with a chamfer which is slidably connected to the right-angled trapezoidal end of the clamping block (8).

6. The plastic crushing assembly according to claim 4, characterized in that: The sealing assembly comprises: An upper cover (10) is movably connected to the knife rod (1), and the upper cover (10) is made of metal; A buffer member (11) is arranged inside the upper cover (10); Wherein, the upper cover (10) is an arc structure that fits the outer wall of the knife rod (1), and the buffer component (11) is a V-shaped sealing ring.

7. The plastic crushing assembly according to claim 1, characterized in that: The control agencies include: A release control channel (12) is arranged at an end of the cutter bar (1) away from the rotating shaft of the pulverizer; A release rod (13) threadedly connected to the release channel (12); A connecting groove (14) is arranged on the card block (8); A blocking cover (15) covers the release control channel (12); The release channel (12), the release rod (13) and the connecting groove (14) are coaxial, and a transmission slider (16) connected to each connecting groove (14) and capable of being pushed by the release rod (13) is arranged in the knife rod (1), and a spring (17) is arranged on the transmission slider (16). An embedding groove for embedding a blocking cover (15) is arranged at the end of the knife rod (1) located at the position of the release channel (12), and the blocking cover (15) is fixed to the knife rod (1) by an embedded screw.

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