Crushing equipment for spc floor recycling

Abstract

The invention relates to the technical field of solid waste comprehensive recycling, and discloses crushing equipment for spc floor recycling, the crushing equipment comprises a crushing box body, a block breaking roller, a pre-stripping assembly, a crushing mechanism and the like, a cutting assembly is arranged on the outer wall of the block breaking roller, the pre-stripping assembly comprises a supporting roller and a conveying belt with barb assemblies on the five faces, and a stripping scraping block, a triangular block and card wires are arranged in the box body; in the working process, the discharging mechanism vertically feeds a floor into the position between the block breaking roller and the conveying belt, the cutting assembly is matched with the supporting assembly to cut a spc hard base layer into broken blocks, the conveying belt fixes a cushion layer through a barb, the base layer broken blocks and the cushion layer generate reverse pulling force through two times of bending to form an opening, the stripping scraping block assists in stripping, and the separated base layer falls into the smashing mechanism. According to the equipment, the problems of waste of traditional sorting and strenuous scraping are solved, and the recovery efficiency and the purity of regenerated materials are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid waste comprehensive recycling, and in particular to a crushing device for recycling spc floor. BACKGROUND

[0002] The crushing device for recycling spc floor is mainly used for crushing waste spc floor for subsequent recycling and reuse. This process is an important part of solid waste resource utilization, which converts waste floor into recyclable raw materials, realizes resource recycling, and meets the requirements of environmental protection and sustainable development.

[0003] In view of the above and the existing related technology, the inventor believes that the following defects often exist: some spc bottom surfaces are glued to a back surface with a cushion layer such as silent cotton or moisture barrier pad. These cushion layers affect the recycling purity of the spc floor. The existing technology usually crushes the floor with the cushion layer into small pieces first, uses wind power to separate them, and then crushes the spc board. However, if the wind is too strong, it will easily separate some small spc boards, causing waste. If the wind is too weak, it will not separate the cushion layer completely, affecting the purity of recycling and reuse. Alternatively, a scraper is used to remove the cushion layer. The connection area between the cushion layer and the spc board is large, and it is laborious to remove it. SUMMARY

[0004] The technical problem to be solved by the present application is that in the prior art, the cushion layer such as silent cotton or moisture barrier pad glued to the bottom surface of the spc floor affects the recycling purity. When separating the cushion layer, the wind power separation method is used. If the wind is too strong, it will easily separate some spc boards, causing waste. If the wind is too weak, the cushion layer will not be separated completely. The scraper removal method is laborious due to the large connection area. To solve the above problems, the present application provides a crushing device for recycling spc floor.

[0005] In order to achieve the above purpose, the following technical scheme is adopted in the present application: a crushing device for recycling spc floor, comprising a crushing box body, a breaking block roller is installed inside the crushing box body, a cutting assembly is arranged in an annular array on the outer wall of the breaking block roller, a pre-stripping assembly is arranged in parallel on the side of the breaking block roller, the pre-stripping assembly comprises a support roller and a support roller, the support roller is installed inside the crushing box body, and the support roller is used to support and drive the conveying belt, the conveying belt is supported by the support roller, and five surfaces are formed in turn from the uppermost surface in a counterclockwise direction, namely a first belt surface, a second belt surface, a third belt surface, a fourth belt surface and a fifth belt surface, wherein the second belt surface is perpendicular to the horizontal center axis of the breaking block roller, two groups of crushing mechanisms moving towards each other are installed below the pre-stripping assembly, a stripping scraper is fixedly connected inside the crushing box body, and the tip of the stripping scraper points to the bending part connecting the third belt surface and the fourth belt surface; The outer wall of the conveying belt is uniformly arranged with a plurality of barb assemblies, the inside of the crushing box is further fixedly connected with a triangular block, and the triangular block is uniformly arranged with a plurality of card needles on one side, and the card needles are directed to the bending part connecting the fourth belt surface and the fifth belt surface.

[0006] Preferably, the cutting assembly comprises a crushing tooth, the crushing tooth is provided with a pressing surface away from one side of the breaking block roller, and the middle position of the pressing surface is provided with a cutting knife.

[0007] Preferably, the inside of the conveying belt is provided with a supporting assembly, the supporting assembly comprises a supporting block, and the end of the supporting block is fixedly connected to the inner wall of the crushing box, the side of the supporting block close to the breaking block roller is provided with a supporting surface, and the middle position of the supporting surface is provided with a buffer notch.

[0008] Preferably, when the cutting knife is aligned with the buffer notch, the pressing surface is parallel to the supporting surface, and the supporting surface is slidingly connected to the inner wall of the conveying belt.

[0009] Preferably, the top of the stripping scraper is provided with a conveying belt, and one end of the conveying belt extends out of the crushing box.

[0010] Preferably, the top of the crushing box is provided with a discharging mechanism, the bottom end of the discharging mechanism is provided with a vertical direction adjusting part, and the vertical direction adjusting part is aligned with the gap between the breaking block roller and the pre-stripping assembly.

[0011] Preferably, the barb assembly comprises a barb body, one end of the barb body is fixedly connected between the outer wall of the conveying belt, the other end of the barb body is integrally connected with an insertion tip, and the top end of the insertion tip is integrally connected with a barb end.

[0012] Preferably, the end of the breaking block roller is provided with a driving mechanism, and the breaking block roller rotates towards the conveying belt.

[0013] Preferably, a floor cushion layer and an spc floor hard base layer are arranged at the gap between the conveying belt and the breaking block roller, the spc floor hard base layer and the floor cushion layer are adhesively connected, the floor cushion layer is tightly attached to the surface of the conveying belt through the barb assembly and rotates with the conveying belt.

[0014] Preferably, the spc floor hard base layer is cut into a plurality of breaking blocks by the cutting assembly, when the spc floor hard base layer breaking block moves downward from the bending part connecting the second belt surface and the third belt surface, the spc floor hard base layer breaking block is gradually disconnected from the floor cushion layer to form an opening, when the spc floor hard base layer breaking block moves to the bending part connecting the third belt surface and the fourth belt surface, the opening between the breaking block and the floor cushion layer gradually increases, and interacts with the stripping scraper, so that the breaking block is separated from the floor cushion layer and falls downward to the crushing mechanism for crushing.

[0015] The technical effects and advantages of the present application are as follows: The present application realizes the separation of the cushion layer and the substrate, the high efficiency and high quality of the substrate crushing through multi-structure cooperative design, and has significant comprehensive advantages. First, the cutting assembly, the pre-peeling assembly and the supporting assembly are used to accurately cut the spc floor hard base layer into blocks, which avoids damaging the floor cushion layer during cutting and reduces the subsequent separation stress area by breaking the blocks in advance. Then, the floor cushion layer is fixed by the conveying belt with the barb assembly, and the spc floor hard base layer blocks cannot be pulled in the opposite direction due to the bending of the floor cushion layer, so that a separation opening is gradually formed. In addition, the peeling scraper is inserted into the opening to strengthen the peeling, which completely solves the problems of waste of base material in traditional air separation and laborious mechanical scraping. The separated substrate blocks can directly fall into the crushing mechanism below, realizing the connection of the whole process of step-by-step separation, efficient crushing and classification recycling. The purity of the substrate regenerated material is guaranteed to improve the performance of the subsequent products, and the recycling efficiency is greatly improved, the operation difficulty and the risk of base material damage are reduced, and the economy and environmental protection are considered. BRIEF DESCRIPTION OF DRAWINGS

[0016] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 It is an internal structure diagram of the whole application; Figure 2 It is a three-dimensional structure diagram of the whole application; Figure 3 It is a three-dimensional structure diagram of the block roller and the supporting assembly part of the present application; Figure 4 It is a three-dimensional structure diagram of the cutting assembly part of the present application; Figure 5 It is a three-dimensional structure diagram of the pre-peeling assembly part of the present application; Figure 6 It is a three-dimensional structure diagram of the spc floor hard base layer and the pre-peeling assembly part with the block moving to the third belt surface and the fourth belt surface bending part of the present application; Figure 7 It is a three-dimensional structure diagram of the spc floor hard base layer and the pre-peeling assembly part with the block moving to the second belt surface and the third belt surface bending part of the present application; Figure 8 It is a three-dimensional structure diagram of the block roller and the pre-peeling assembly part of the present application; Figure 9 It is a three-dimensional structure diagram of the barb assembly part of the present application; Figure 10 It is a three-dimensional structure diagram of the triangular block part of the present application.

[0017] Legend: 1, crushing box; 2, broken block roller; 3, cutting assembly; 4, pre-peeling assembly; 5, supporting assembly; 6, crushing mechanism; 7, peeling scraper; 8, conveying belt; 9, floor cushion layer; 10, spc floor hard base layer; 11, card needle; 12, triangular block; 13, blanking mechanism; 301, crushing tooth; 302, pressing surface; 303, cutting knife; 401, supporting roller; 402, conveying belt; 403, first belt surface; 404, second belt surface; 405, third belt surface; 406, fourth belt surface; 407, fifth belt surface; 408, barb assembly; 4081, barb body; 4082, insertion tip; 4083, barb end; 501, supporting block; 502, supporting surface; 503, buffer notch. DETAILED DESCRIPTION

[0018] It is easy to understand that, according to the technical scheme of the present application, those skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical scheme of the present application, and should not be regarded as the whole or as the limitation or restriction of the technical scheme of the present application.

[0019] Some spc floors are provided with sound insulation cotton, moisture-proof pad and other cushion layers on the back, the essence of which is to optimize the use experience and prolong the product life through functional superposition. The sound insulation cotton can absorb impact sound and reduce indoor noise propagation to improve environmental quietness. The moisture-proof pad can block ground moisture penetration and avoid floor warping and deformation due to moisture. At the same time, the cushioning property of the cushion layer can also fill the small unevenness of the ground, making the foot feel more comfortable. However, when recycling and crushing spc floors, the cushion layer must be separated because there is a fundamental difference in material between the two. The main body of the spc floor is polyvinyl chloride, while the cushion layer is mostly polyester fiber, sponge or polyethylene and other materials. If the two are not separated and directly crushed for recycling, the impurities of different materials will greatly reduce the purity of the regenerated material, resulting in insufficient strength and unstable performance of the regenerated material, which cannot meet the quality standards of spc floor production, and ultimately affects the use effect and life of the regenerated product.

[0020] In recycling spc floor with backing layer, the prior art generally mainly adopts two ways to separate the backing layer on the back thereof, the first is to crush the backing layer and the hard layer of the floor body together, and then separate them according to their different densities by using a wind power sorting device, and then crush the separated spc floor for recycling, if the wind power is increased to ensure that the backing layer is fully separated, small spc plates with density similar to the backing layer, especially small particles after crushing, may be mistakenly rolled into the backing layer sorting channel, causing direct waste of recyclable base material; if the wind power is reduced to avoid loss of spc plates, too much backing layer may remain on the surface of the small spc plates, which cannot be completely separated, and the remaining backing layer will be mixed into the spc regenerated material in the form of impurities after subsequent crushing, directly reducing the purity of the regenerated material and affecting the strength, stability and other key properties of the regenerated product; the second is to use mechanical or manual scraping to remove the backing layer from the spc plate base material, the two are usually bonded by bonding process to ensure adhesion during production, and the bonding area between them is large, so that the scraper needs to overcome a large bonding force during operation, which is not only laborious and low in efficiency, but also may cause damage to the surface of the spc plate or generate too much debris due to improper control of the scraping force, which also affects the economy and product quality of subsequent recycling; in order to solve the above technical problems, the following improvements are made in the present application: Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the present application provides a technical scheme: a kind of spc floor recycling with crushing equipment, including crushing box 1, the inside of crushing box 1 is installed broken block roller 2, the outer wall of broken block roller 2 annular array is provided with cutting assembly 3, cutting assembly 3 rotates with broken block roller 2, for cutting spc floor hard base layer 10 into block, the side of broken block roller 2 is parallelly provided with pre-peeling assembly 4, the end of broken block roller 2 is installed with driving mechanism, broken block roller 2 and conveying belt 402 are opposite rotation, pre-peeling assembly 4 includes support roller 401 and support roller 401, support roller 401 is installed in the inside of crushing box 1, and support roller 401 is used to support and drive conveying belt 402, conveying belt 402 is under the support of support roller 401, from the uppermost one face starts anticlockwise and forms first band surface 403, second band surface 404, third band surface 405, fourth band surface 406 and fifth band surface 407 these five faces, wherein the horizontal central axis of second band surface 404 and broken block roller 2 is vertically arranged, pre-peeling assembly 4 is installed below two groups of opposite movement crushing mechanism 6, the inside of crushing box 1 is also fixedly connected with peeling scraper block 7, and the tip of peeling scraper block 7 points to the bending portion of third band surface 405 and fourth band surface 406, the outer wall of conveying belt 402 is uniformly arranged with several barb assemblies 408, the gap between conveying belt 402 and broken block roller 2 is provided with floor cushion layer 9 and spc floor hard base layer 10, and spc floor hard base layer 10 and floor cushion layer 9 are adhesively connected, floor cushion layer 9 is tightly attached to the surface of conveying belt 402 through barb assembly 408, and rotates with conveying belt 402.The floor cushion 9 is connected to the surface of the conveying belt 402 under the action of the barb assembly 408, rotates with the conveying belt 402, and the spc floor hard base layer 10 is cut into blocks by the cutting assembly 3. When the spc floor hard base layer 10 block moves downward from the bending part where the second belt surface 404 and the third belt surface 405 are connected, the upper end of the spc floor hard base layer 10 is blocked by the pressing surface 302 and cannot be bent to the third belt surface 405 together with the spc floor hard base layer 10. The bottom end of the spc floor hard base layer 10 block and the floor cushion 9 are pulled apart to form an opening. When the spc floor hard base layer 10 block moves to the bending part where the third belt surface 405 and the fourth belt surface 406 are connected, the spc floor hard base layer 10 block can rotate to the third belt surface 405 direction although it loses the blocking of the pressing surface 302. The floor cushion 9 is bent to the fourth belt surface 406 together with the conveying belt 402. The angle difference between the floor cushion 9 and the spc floor hard base layer 10 block causes the opening between the floor cushion 9 and the spc floor hard base layer 10 block to gradually increase. The tip of the stripping scraper 7 can be inserted into the opening between the floor cushion 9 and the spc floor hard base layer 10 block. The reverse pulling force caused by the angle difference between the floor cushion 9 and the spc floor hard base layer 10 block and the stripping force of the stripping scraper 7 inserted into the opening between the floor cushion 9 and the spc floor hard base layer 10 block interact with each other, so that the spc floor hard base layer 10 block is separated from the floor cushion 9 and falls downward to the crushing mechanism 6 for crushing.

[0021] The reverse pulling force caused by the multiple bending and pulling of the cutting assembly 3 and the conveying belt 402, combined with the auxiliary stripping design of the stripping scraper 7, effectively separates the spc floor hard base layer 10 from the floor cushion 9 before crushing. The spc floor hard base layer 10 is separated from the floor cushion 9 before crushing, and then the spc floor hard base layer 10 is crushed and recycled. This design avoids the mixing of different materials from the source, ensures higher purity of the base plate entering the crushing link, reduces the mixing of cushion impurities, and further ensures the strength, stability and other key performance of the regenerated material. Meanwhile, the spc floor hard base layer 10 is first cut into broken blocks by the cutting assembly 3, which can destroy the integrity of the spc floor hard base layer 10 in advance, greatly reduce the stress area and bonding force of single separation, and more easily and accurately destroy the bonding surface of the spc floor hard base layer 10 and the floor cushion layer 9 through directional force, so as to facilitate the reduction of separation operation difficulty and the improvement of separation efficiency; at the same time, the floor cushion layer 9 is directed towards the conveyor belt 402, which can accurately fix the floor cushion layer 9 and drive it to move through the barb assembly 408, utilize the morphological change at the bending part, make the hard base layer broken block and the floor cushion layer 9 generate twice reverse pulling force which cannot be bent with the conveyor belt 402, sequentially and gradually create a separation gap and weaken the bonding force between them, avoid the problems of low efficiency or damage to the base material in the traditional single separation mode; finally, the scraper is inserted into the opening to assist in peeling, which can not only ensure the completeness of separation, reduce the residue of the floor cushion layer 9 to ensure the purity of the regenerated material, but also guide the separated base plate to directly fall into the subsequent crushing mechanism 1, realize smooth connection of the separation to crushing process, greatly improve the overall recycling efficiency, and at the same time, without relying on manual or high-strength mechanical scraping, reduce the labor intensity and the risk of base material damage.

[0022] Please refer to Figure 1 and Figure 10 As shown in the figure, the inside of the crushing box 1 is also fixedly connected with a triangular block 12, a plurality of needles 11 are uniformly arranged on one side of the triangular block 12, and the needles 11 point to the bending part where the fourth belt surface 406 and the fifth belt surface 407 are connected, and the tips of the needles 11 are in contact with the surface of the conveyor belt 402. When the floor cushion layer 9 moves to the bending part where the fourth belt surface 406 and the fifth belt surface 407 are connected along with the conveyor belt 402, the needles 11 can effectively insert between the floor cushion layer 9 and the conveyor belt 402, and block the floor cushion layer 9, so that it cannot continue to move with it, and then peel the floor cushion layer 9 from the conveyor belt 402. The top of the peeling scraper 7 is provided with a conveyor belt 8, one end of the conveyor belt 8 extends out of the crushing box 1, and the peeled floor cushion layer 9 falls onto the conveyor belt 8 below and is conveyed out of the crushing box 1 by the conveyor belt 8, so as to facilitate subsequent processing.

[0023] Please refer to Figure 4As shown, the cutting assembly 3 includes a crushing tooth 301, both upper and lower edges of the crushing tooth 301 are rounded, the side of the crushing tooth 301 away from the broken block roller 2 is provided with a pressing surface 302, the middle position of the pressing surface 302 is provided with a cutting knife 303, the inside of the conveying belt 402 is provided with a supporting assembly 5, the supporting assembly 5 includes a supporting block 501, and the end of the supporting block 501 is fixedly connected to the inner wall of the crushing box 1, the side of the supporting block 501 close to the broken block roller 2 is provided with a supporting surface 502, and the middle position of the supporting surface 502 is provided with a buffer notch 503, when the cutting knife 303 is aligned with the buffer notch 503, the pressing surface 302 is parallel to the supporting surface 502, the supporting surface 502 is slidingly connected with the inner wall of the conveying belt 402, and the surface of the supporting surface 502 and the buffer notch 503 can be coated with a certain amount of lubricating oil to reduce the friction between the inner wall of the conveying belt 402 and the supporting surface 502, the supporting surface 502 supports the floor from the back, the pressing surface 302 extrudes and limits the floor from the front, thereby limiting and fixing the spc floor from both sides of the cutting knife 303, and at the same time the cutting knife 303 is inserted into the floor, after the hard base layer 10 of the spc floor is extruded backward by the cutting assembly 3, the floor cushion layer 9 at the back is broken under stress, and the conveying belt 402 can be bent backward into the inside of the buffer notch 503 due to its certain toughness, reducing the destructive power of the cutting knife 303 on the cushion layer.

[0024] The top of the crushing box 1 is provided with a feeding mechanism 13, the bottom end of the feeding mechanism 13 is provided with a vertical direction adjusting part, and the vertical direction adjusting part is aligned with the gap between the broken block roller 2 and the pre-peeling assembly 4, and the vertical direction adjusting part is used to make the floor fall vertically between the broken block roller 2 and the pre-peeling assembly 4.

[0025] The barb assembly 408 includes a barb main body 4081, one end of the barb main body 4081 is fixedly connected between the outer wall of the conveying belt 402, the other end of the barb main body 4081 is integrally connected with an insertion tip 4082, and the top end of the insertion tip 4082 is integrally connected with a barb end 4083, the pressing surface 302 and the supporting surface 502 cooperate to press the floor cushion layer 9 towards the conveying belt 402, at this time the insertion tip 4082 is used to reduce the contact area between the floor cushion layer 9, so as to facilitate the insertion into the floor cushion layer 9, after insertion, the barb end 4083 is used to enhance the connection between the floor cushion layer 9 and the conveying belt 402, so that the floor cushion layer 9 can move together with the conveying belt 402.

[0026] Working principle: when recycling the spc floor with a cushion layer on the back, in order to ensure the purity of the spc substrate recycling, the cushion layer on the back needs to be separated first, and then the spc floor substrate is crushed, so that it can be easily recycled, the specific operation process of the device is as follows: The spc floor to be recycled is put into the inside of the crushing box 1 through the feeding mechanism 13, and the floor has a cushion layer on one side towards the pre-stripping assembly 4. The vertical part at the bottom end of the feeding mechanism 13 can limit the floor put in, so that the floor is vertically inserted between the breaking roller 2 and the pre-stripping assembly 4. The breaking roller 2 and the pre-stripping assembly 4 move relative to each other, and the floor inside the breaking roller 2 moves downward. When the cutting knife 303 is opposite the buffer notch 503, the pressing surface 302 is parallel to the supporting surface 502, and the spc floor is limited and fixed from the top and bottom. Since the floor base material is a hard material, it cannot be bent backward. When the protruding cutting knife 303 is aligned with the floor, it can cut the floor. However, the cushion layer on the back of the floor is generally a flexible material and has certain elastic expansion performance, and can be bent backward and embedded in the inside of the buffer notch 503, so that the cutting assembly 3 only cuts the recycled base material of the floor. At the same time, the pressing surface 302 and the supporting surface 502 cooperate to press the cushion layer on the surface of the second belt surface 404, and the barb assembly 408 is inserted into the inside of the cushion layer to connect and fix the cushion layer, so that the cushion layer is wrapped on the surface of the conveyor belt 402 and moves with the conveyor belt 402; The cut floor base material continues to move backward with the cushion layer and the conveyor belt 402. When the cushion layer and the conveyor belt 402 turn to the third belt surface 405 at the bending part between the second belt surface 404 and the third belt surface 405, the hard floor base material cannot be bent and is limited by the cutting knife 303 above, so it cannot turn to the third belt surface 405 with the cushion layer. Therefore, there is a pulling force between the floor base material and the cushion layer on the third belt surface 405, and the floor base material is gradually separated from below, forming an opening which gradually increases. When the floor base material gradually moves downward and loses the limitation of the cutting knife 303 above, the floor base material can move to the third belt surface 405 with the cushion layer. When it continues to move to the bending part of the third belt surface 405 and the fourth belt surface 406, the opening is aligned with the tip of the stripping scraper 7, and the gap between the stripping scraper 7 and the fourth belt surface 406 can only accommodate the cushion layer, so that the floor base material can be separated from the cushion layer; The separated floor base material falls between the two groups of crushing mechanisms 6 for further crushing to provide raw materials for subsequent recycling. The floor cushion layer 9 continues to move with the conveyor belt 402, and is stripped by the comb 11 when it moves to the comb 11, and is stripped from the conveyor belt 402 and falls onto the conveying belt 8 and is conveyed outward by the conveying belt 8.

[0027] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and modifications to the above embodiments without departing from the technical idea of the present application, and these modifications and modifications should be within the protection scope of the present application.

Claims

1. A shredding apparatus for recycling spc flooring, characterized by, The application relates to a pulverizing box body, wherein a broken block roller is arranged in the interior of the pulverizing box body, an annular array of cutting assemblies is arranged on the outer wall of the broken block roller, a pre-stripping assembly is arranged on the side of the broken block roller, the pre-stripping assembly comprises support rollers, the support rollers are arranged in the interior of the pulverizing box body and are used for supporting and driving a conveying belt, the conveying belt is supported by the support rollers and is sequentially formed into a first belt surface, a second belt surface, a third belt surface, a fourth belt surface and a fifth belt surface in a counterclockwise direction from the uppermost surface, the second belt surface is perpendicular to the horizontal central axis of the broken block roller, two groups of pulverizing mechanisms moving towards each other are arranged below the pre-stripping assembly, and a stripping scraper is fixedly connected in the interior of the pulverizing box body and points to the bending position where the third belt surface and the fourth belt surface are connected. A plurality of barb assemblies are uniformly arranged on the outer wall of the conveying belt, and a triangular block is fixedly connected in the interior of the pulverizing box body, one side of the triangular block is uniformly provided with a plurality of card needles, and the card needles point to the bending position where the fourth belt surface and the fifth belt surface are connected.

2. The crushing apparatus for recycling spc flooring according to claim 1, characterized in that: The cutting assembly comprises crushing teeth, the crushing teeth are provided with a pressing surface on the side away from the broken block roller, and a cutting knife is arranged at the middle position of the pressing surface.

3. The crushing apparatus for recycling spc flooring according to claim 1, characterized in that: A supporting assembly is arranged in the interior of the conveying belt, the supporting assembly comprises supporting blocks, the end portions of the supporting blocks are fixedly connected to the inner wall of the pulverizing box body, a supporting surface is arranged on the side of the supporting block close to the broken block roller, and a buffer notch is arranged at the middle position of the supporting surface.

4. The crushing apparatus for recycling spc flooring according to claim 2, characterized in that: When the cutting knife is aligned with the buffer notch, the pressing surface is parallel to the supporting surface, and the supporting surface is slidingly connected to the inner wall of the conveying belt.

5. The crushing apparatus for recycling spc flooring according to claim 1, characterized in that: A conveying belt is arranged on the top of the stripping scraper, and one end of the conveying belt extends out of the pulverizing box body. 6.The crushing apparatus for recycling spc flooring according to claim 1, characterized in that: A discharging mechanism is arranged on the top of the pulverizing box body, a vertical direction adjusting portion is arranged at the bottom end of the discharging mechanism, and the vertical direction adjusting portion is aligned with the gap between the broken block roller and the pre-stripping assembly. 7.The crushing apparatus for recycling spc flooring according to claim 1, characterized in that: The barb assembly comprises a barb main body, one end of the barb main body is fixedly connected to the outer wall of the conveying belt, the other end of the barb main body is integrally connected with an insertion tip, and the top end of the insertion tip is integrally connected with a barb end. 8.The spc floor recycling crushing apparatus according to claim 1, characterized by: A driving mechanism is arranged at the end portion of the broken block roller, and the broken block roller and the conveying belt rotate towards each other. 9.The crushing apparatus for recycling spc flooring according to claim 1, characterized in that: A floor cushion layer and an spc floor hard base layer are arranged at the gap between the conveying belt and the broken block roller, the spc floor hard base layer is adhesively connected to the floor cushion layer, the floor cushion layer is tightly attached to the surface of the conveying belt through the barb assembly and rotates with the conveying belt. 10.The crushing apparatus for recycling spc flooring according to claim 9, characterized in that: The spc floor hard base layer is cut into a plurality of broken blocks by the cutting assembly, when the broken block of the spc floor hard base layer moves downwards from the bending position where the second belt surface and the third belt surface are connected, the broken block of the spc floor hard base layer is gradually disconnected from the floor cushion layer to form an opening, when the broken block of the spc floor hard base layer moves to the bending position where the third belt surface and the fourth belt surface are connected, the opening between the broken block and the floor cushion layer gradually increases, and the broken block is separated from the floor cushion layer and falls downwards to the pulverizing mechanism for pulverization.

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