Ultrahigh molecular weight polyethylene plate processing excess material regeneration equipment

Abstract

The invention relates to the technical field of polyethylene waste recovery and granulation, in particular to ultra-high molecular weight polyethylene plate processing excess material regeneration equipment which comprises a spiral extruder, an extrusion die, a water cooling pool, a draining pool, a granulator and a side frame arranged on the side portion of the water cooling pool and the side portion of the draining pool. A connecting rod is installed in the bending guide groove in a penetrating mode, a driving mechanism used for driving the connecting rod to conduct reciprocating translation adjustment in the length direction of the side frame is arranged at the top of the side frame, and a traction mechanism is arranged at the end of the side, close to the water cooling pool, of the connecting rod. The driving mechanism drives the traction mechanism to do reciprocating translation along the bending guide groove in the side frame, strips discharged from the strip outlet can be automatically and sequentially dragged into the water cooling pool, the draining pool and the granulator, automatic conveying of the strips is achieved, manual feeding is replaced, the labor cost is reduced, the production efficiency is improved, the risk of contact scalding is avoided, and the production efficiency is improved. And the safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of polyethylene waste recycling and granulation, in particular to a device for recycling residual materials from ultra-high molecular polyethylene sheet processing. Background Art

[0002] Ultra-high molecular weight polyethylene sheet is a high-performance engineering plastic sheet made of high molecular weight polyethylene. It has excellent wear resistance, impact resistance, corrosion resistance, self-lubrication and low temperature resistance. It is also light, non-absorbent, non-toxic, environmentally friendly, and easy to install. It is widely used in chemical, mining, metallurgy, ports, marine engineering, food processing and other fields. It is often used to make silo liners, guide rails, conveyor belts, sliders, gears and other wear-resistant and corrosion-resistant parts. It is an ideal material to replace traditional materials such as metals and rubber.

[0003] The scraps and waste generated during the processing of ultra-high molecular weight polyethylene sheets can usually be recycled into usable raw materials through processes such as crushing, melting, extrusion, cutting and granulation. Its advantages are to achieve resource recycling, reduce production costs and reduce environmental pollution.

[0004] After the molten ultra-high molecular weight polyethylene material is extruded into strips by an extruder, in order to ensure that the strips have a high degree of molding, the strips usually need to be cooled before cutting and granulation. The traditional strip cooling method is usually water cooling. After the strips are extruded, the strips are usually manually pulled and transferred to the cutting granulator. The specific method is that the staff grabs the head of the just-extruded strips and puts it into the cooling water pool. After passing the guide rollers at the corresponding position, the strips are introduced into the feed port of the cutting granulator.

[0005] The above-mentioned manual feeding method has the following disadvantages: Manual transfer is not only time-consuming and labor-intensive, but also inefficient and requires high professionalism and proficiency of the operator; The temperature of the newly extruded strips is relatively high, and even if people wear gloves when transferring them manually, there is still a risk of burns; When workers grab the head of the strips to transfer them, the strips tend to stick to each other. After cooling and before being sent to cutting and granulation, in order to ensure the quality of granulation, the sticky part of the strips needs to be cut off in advance, which not only increases labor intensity but also increases the generation of waste. Summary of the invention

[0006] The purpose of the present invention is to provide a device for recycling residual materials from ultra-high molecular weight polyethylene sheet processing to solve the technical problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions.

[0008] A recycling device for processing residual materials of ultra-high molecular polyethylene sheets, comprising a screw extruder, an extrusion die, a water cooling tank, a draining tank and a pelletizer arranged in sequence, and a side frame arranged on the side of the water cooling tank and the draining tank, the side frame is provided with a bending guide groove penetrating on both sides, a connecting rod is installed through the bending guide groove, and a driving mechanism for driving the connecting rod to perform reciprocating translation adjustment along the length direction of the side frame is provided on the top of the side frame; A traction mechanism is provided on the end of the connecting rod close to the water cooling pool. The traction mechanism is used to pull the strip material from the extrusion port of the screw extruder to the pelletizer. The traction mechanism includes a cantilever and a conveyor belt. A fixed arm is fixed on the end of the connecting rod. The cantilever is fixed to the side of the bottom end of the fixed arm. A number of through holes corresponding to the positions of the extrusion ports are evenly distributed on the cantilever. The conveyor belt is arranged on the side of the cantilever close to the pelletizer.

[0009] Preferably, the bending guide groove has a first horizontal portion, a second horizontal portion, an inclined portion and a third horizontal portion in sequence along the direction from the screw extruder to the pelletizer, when the connecting rod is located in the first horizontal portion, the lead-in hole is at the same height as the extrusion port, and when the connecting rod is located in the second horizontal portion; The traction mechanism can pull the strip material to pass under the first guide roller in the water cooling pool. When the connecting rod is located in the inclined portion, the traction mechanism can pull the strip material to pass over the second guide roller in the draining pool. There is a clearance space between the end of the first guide roller close to the side frame and the inner wall of the water cooling pool for the fixed arm to pass through.

[0010] Preferably, the traction mechanism also includes a first drive motor, a pair of mounting seats, a pair of rotating shafts and a pair of mounting plates. A pair of mounting seats are symmetrically fixed on one side of the cantilever close to the pelletizer. The rotating shafts are rotatably mounted on the two mounting seats. Mounting plates are fixed on the ends of the two rotating shafts close to each other. The first drive motor is fixed to the side of one of the mounting seats, and the output shaft of the first drive motor is fixedly connected to the end of the rotating shaft on the same side. The conveyor belt is installed between the two mounting plates, and when the connecting rod is not in the third horizontal portion, the conveyor belt is horizontally extended.

[0011] Preferably, a plurality of V-shaped guide grooves are evenly distributed on the conveyor belt, and the V-shaped guide grooves extend along the running direction of the conveyor belt, and the positions of the V-shaped guide grooves and the through holes correspond one to one.

[0012] Preferably, an annular cavity is provided in the cantilever around each through hole, and sliding holes that are connected to the annular cavity are arranged in an annular array on the inner wall of the through hole. A sliding rod is slidably installed in each sliding hole, and an arc-shaped scraper is fixed on the end of each sliding rod extending into the through hole. A spring is sleeved on the outside of each sliding rod, one end of the spring is fixed to the arc-shaped scraper, and the other end is fixed to the inner wall of the through hole. Under the action of the elastic restraining force of the spring, each arc-shaped scraper can correspondingly abut to form a full circular structure that matches the outer diameter of the strip material after cooling and hardening.

[0013] Preferably, a plurality of strip outlets are evenly distributed on the side of the extrusion die, and the strip outlets are hollow cylindrical structures. Each strip outlet is connected to the extrusion outlet of the extrusion die one by one, and each strip outlet end is conical, and the minimum diameter is smaller than the inner diameter of the full circle structure.

[0014] Preferably, the driving mechanism comprises a threaded rod, a second driving motor, a nut seat and a connecting arm, a plate frame extending along the length direction is fixed to the top of the side frame, two brackets are symmetrically fixed to one side of the plate frame away from the water cooling pool, the threaded rod is rotatably installed between the two brackets, the second driving motor is fixed to one of the side brackets, and the output shaft is fixedly connected to one end of the threaded rod; The nut seat is thread-matched and mounted on the threaded rod, and slides in contact with the surface of the plate frame. The bottom end of the connecting arm is fixed to the bottom surface of the nut seat, and a connecting seat is fixed to the bottom end of the connecting arm, which is fixedly connected to the end of the connecting rod away from the traction mechanism.

[0015] Preferably, the connecting arm includes an outer cylinder fixed to the nut seat and a telescopic rod fixed to the connecting seat. The telescopic rod is slidably inserted in the outer cylinder. A vertically extending limit slide groove is provided on the inner wall of the outer cylinder. A sliding block is fixed to the side of the telescopic rod, and the sliding block matches the limit card and is installed in the limit slide groove.

[0016] Preferably, a roller is rotatably sleeved on the outside of the connecting rod, and the roller is limitedly clamped in the bending guide groove.

[0017] Preferably, a hot air box is fixed on the side of the side frame near the pelletizer, and the bottom of the hot air box has a downward blowing port. The side of the side frame is located below the hot air box and is provided with a dirt collecting box with a top opening facing the blowing port, so that the strip material can pass between the hot air box and the dirt collecting box.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0019] The driving mechanism drives the traction mechanism to move back and forth along the curved guide groove on the side frame, which can automatically pull the strips discharged from the strip outlet into the water cooling pool, the draining pool and the pelletizer in turn, thereby realizing the automatic transfer of the strips, replacing manual feeding, reducing labor costs, improving production efficiency, and avoiding the risk of contact burns, with high safety.

[0020] The cantilever of the traction mechanism is evenly distributed with lead-in holes corresponding to the strip outlet position, so that the strips can pass through and be separated one by one. The V-shaped guide groove is used to limit the strips to avoid adhesion between the heads of the strips, thereby reducing the generation of waste caused by cutting off the adhesion. At the same time, the conveyor belt is driven to swing by the first drive motor, which makes it easy for the strips to separate from the conveyor belt and be smoothly guided to the pelletizer, thereby ensuring the continuity of granulation.

[0021] When the driving mechanism drives the connecting rod and the traction mechanism to move to the extreme position on the side of the extrusion die, the strip outlet enters the above-mentioned circular structure and contacts and presses against the arc-shaped dirt scraping member. After being pressed, the arc-shaped dirt scraping member pushes the slide rod to move outward, so that the strip outlet extends to the other side through the threading hole, avoiding the situation that the strip material cannot fall onto the conveyor belt normally due to the blockage of the arc-shaped dirt scraping member when being discharged; When the driving mechanism drives the connecting rod and the traction mechanism to move towards the granulator side, after the strip outlet disengages from between the arc-shaped dirt scraping members, under the elastic reset action of the spring, each arc-shaped dirt scraping member is pushed to reset to form a circular structure, which closely fits the outer surface of the strip material, increasing the firmness of the adhesion with the strip material, avoiding the strip material from adhering only to the groove wall of the V-shaped guiding groove and falling off during traction. In addition, the circular structure formed by the closure of the four arc-shaped dirt scraping members closely fits the outer wall of the strip material, and can scrape off the dirt attached to the outer wall of the strip material, improving the granulation quality. Description of the Drawings

[0022] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of another perspective of the structure shown in Fig. 1; Figure 3 It is a schematic diagram of the extrusion outlet structure in the present invention; Figure 4 It is a schematic diagram of the side frame side part structure in the present invention; Figure 5 It is Figure 4 The enlarged schematic diagram of the structure at A in; Figure 6 It is a schematic diagram of the driving mechanism structure in the present invention; Figure 7 It is Figure 6 The enlarged schematic diagram of the structure at B in; Figure 8 It is a detailed schematic diagram of the connecting arm structure in the present invention; Figure 9 It is a schematic diagram of the traction mechanism structure in the present invention; Figure 10 It is Figure 9 The enlarged schematic diagram of the structure at C in; Figure 11 It is a schematic diagram of the structure on the cantilever in the present invention; Figure 12 It is Figure 11 The partial structure sectional schematic diagram of the structure shown; Figure 13 It is a schematic diagram of the extrusion outlet and the arc-shaped dirt scraping member in extrusion cooperation; Figure 14 It is a schematic diagram of the strip material passing through between the four arc-shaped dirt scraping members in the present invention; Figure 15Schematic installation diagram of the first conveying roller structure in the present invention.

[0023] In the figure: 01, screw extruder; 02, extrusion die; 021, strip outlet; 03, water cooling tank; 031, first conveying roller; 04, draining tank; 041, second conveying roller; 05, granulator; 06, hot air box; 07, sewage collection box; 08, strip material; 1, side frame; 11, bending guiding groove; 111, first horizontal part; 112, second horizontal part; 113, inclined part; 114, third horizontal part; 2, connecting rod; 21, fixed arm; 22, roller; 3, traction mechanism; 31, cantilever; 32, threading hole; 33, mounting seat; 34, rotating shaft; 35, mounting plate; 36, first driving motor; 37, conveyor belt; 371, V-shaped guiding groove; 4, driving mechanism; 41, plate frame; 411, bracket; 42, threaded rod; 43, second driving motor; 44, nut seat; 45, connecting arm; 451, outer cylinder; 452, telescopic rod; 453, limiting sliding groove; 454, sliding block; 46, connecting seat; 5, annular cavity; 51, sliding hole; 52, sliding rod; 53, arc-shaped scraping part; 54, spring. Detailed implementation manners

[0024] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connection", "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means being connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only references to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present invention.

[0026] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0027] In the embodiments of the present invention, "and / or" is merely a correlation relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the preceding and following associated objects.

[0028] References to "an embodiment" or "some embodiments" etc. described in this specification mean that specific features, structures, or characteristics described in connection with that embodiment are included in one or more embodiments of the present invention. Thus, statements such as "in an embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in another way. Embodiment 1

[0029] Please refer to Figures 1 - 15 The present invention provides a regenerating device for processing scraps of ultra-high molecular weight polyethylene sheets, which includes a screw extruder 01, an extrusion die 02, a water cooling tank 03, a draining tank 04, a granulator 05 arranged in sequence, and a side frame 1 arranged on the side of the water cooling tank 03 and the draining tank 04. The extrusion outlets on the extrusion die 02 are evenly distributed on the side of the extrusion die 02 close to the water cooling tank 03. The device also includes a crusher and a melting device. The crusher and the melting device both adopt existing technologies. Therefore, the crusher and the melting device are not illustrated in this application. The scraps generated from the processing of ultra-high molecular weight polyethylene sheets are first crushed by the crusher, melted by the melting device after crushing, and the melted material is introduced into the screw extruder 01, and finally discharged in the form of a strip 08 through the extrusion outlet.

[0030] The side frame 1 is provided with a bent guiding groove 11 that penetrates through both sides. A connecting rod 2 is installed through the bent guiding groove 11. The top of the side frame 1 is provided with a driving mechanism 4 for driving the connecting rod 2 to reciprocate and translate along the length direction of the side frame 1. A traction mechanism 3 is arranged at the end of the connecting rod 2 on the side close to the water cooling tank 03. The traction mechanism 3 is used to traction the strip 08 from the extrusion outlet of the screw extruder 01 into the granulator 05. By driving the driving mechanism 4, the traction mechanism 3 is moved from the extrusion die 02 to the side of the granulator 05, and the strip 08 discharged from the extrusion outlet is traction-transferred into the granulator 05 by the traction mechanism 3. During the transfer process, the strip 08 passes through the water cooling tank 03 and the draining tank 04 to complete the water cooling and draining steps; The strip 08 can be cut into pellets by the pelletizer 05 and discharged from the discharge port on the side of the pelletizer 05 to obtain recycled materials, thus completing the recycling process of the surplus materials from the processing of ultra-high molecular weight polyethylene plates. In addition, during the next recycling process, the driving mechanism 4 drives the traction mechanism 3 to move and reset towards the extrusion die 02, and then the above process can be repeated.

[0031] Among them, the first guiding rollers 031 are evenly distributed along the length direction in the water cooling tank 03, the draining tank 04 is arranged obliquely, and the bottom end extends above the water cooling tank 03. The second guiding rollers 041 are evenly distributed along the length direction in the draining tank 04. There are several partitions on both the first guiding rollers 031 and the second guiding rollers 041. The strip 08 is limited between adjacent partitions to avoid mutual contact and influence between the strips 08.

[0032] As Figure 4 and Figure 6 shown, the bending guiding groove 11 successively has a first horizontal part 111, a second horizontal part 112, an inclined part 113 and a third horizontal part 114 along the direction from the screw extruder 01 to the pelletizer 05. The third horizontal part 114 is higher than the first horizontal part 111, the first horizontal part 111 is higher than the second horizontal part 112, and the inclination of the inclined part 113 is the same as that of the draining tank 04. In addition, there is an inclined section connection between the first horizontal part 111 and the second horizontal part 112, an inclined section connection between the second horizontal part 112 and the inclined part 113, and an inclined section connection between the inclined part 113 and the third horizontal part 114.

[0033] As Figure 9 and Figure 10 shown, the traction mechanism 3 includes a cantilever 31 and a conveyor belt 37. A fixed arm 21 is fixed on the end of the connecting rod 2. The connecting rod 2 is horizontally arranged, the fixed arm 21 is vertically arranged, and the connecting rod 2 and the fixed arm 21 form an L-shaped structure. The cantilever 31 is fixed on the side of the bottom end of the fixed arm 21 and is arranged parallel to the connecting rod 2. A number of through holes 32 corresponding to the positions of the extrusion ports one by one are evenly distributed on the cantilever 31. The conveyor belt 37 is arranged on the side of the cantilever 31 close to the pelletizer 05. Among them, the conveyor belt 37 is used to pull and feed the strip 08 towards the pelletizer 05. The conveyor belt 37 adopts the existing technology, and its detailed structure and working principle will not be elaborated.

[0034] In addition, as Figure 9 shown, a number of V-shaped guiding grooves 371 are evenly distributed on the conveyor belt 37. The V-shaped guiding grooves 371 all extend along the running direction of the conveyor belt 37, and the positions of each V-shaped guiding groove 371 correspond to the positions of each through hole 32 one by one.

[0035] When the driving mechanism 4 drives the connecting rod 2 to translate and adjust along the bending guide groove 11, the height change at different positions in the bending guide groove 11 is utilized to guide the connecting rod 2 to adapt to lifting, and then drive the traction mechanism 3 to lift synchronously, realizing the adaptive adjustment of the traction height of the traction mechanism 3 for the strip material 08; Specifically, when the connecting rod 2 is located in the first horizontal portion 111, the threading hole 32 is at the same height as the extrusion outlet, that is, when the driving mechanism 4 drives the connecting rod 2 to move to the extreme position on the side of the extrusion die 02, the threading hole 32 corresponds one-to-one with the extrusion outlet on the side of the extrusion die 02, and the strip material 08 discharged from the extrusion outlet can pass through the threading hole 32 and fall one-to-one on the V-shaped guide groove 371 on the conveyor belt 37; Since the extruded strip material 08 has a certain viscosity, after the head falls on the V-shaped guide groove 371, it will adhere to the groove wall of the V-shaped guide groove 371. Subsequently, through the operation of the conveyor belt 37, the strip material 08 is conveyed forward for a certain distance until the head end of the strip material 08 reaches the side of the conveyor belt 37 away from the cantilever 31, and the strip material 08 will be limited one-to-one within the V-shaped guide groove 371; When the connecting rod 2 is located in the second horizontal portion 112, the traction mechanism 3 can traction the strip material 08 to pass under the first guide roller 031 in the water cooling tank 03, that is, the traction height of the traction mechanism 3 for the strip material 08 is lower than the first guide roller 031, and then the strip material 08 can be driven to pass under the first guide roller 031, and the first guide roller 031 is used to limit the strip material 08 below the liquid level in the water cooling tank 03 to ensure that the strip material 08 can be fully immersed in the cooling water for sufficient cooling; When the connecting rod 2 is located in the inclined portion 113, the traction mechanism 3 can traction the strip material 08 to pass above the second guide roller 041 in the draining tank 04, that is, the traction height of the traction mechanism 3 for the strip material 08 is higher than the second guide roller 041, so that the strip material 08 can bypass above the second guide roller 041 and is supported by the second guide roller 041, so that the liquid drops on the strip material 08 can drain onto the draining tank 04, and the draining tank 04 is arranged obliquely to facilitate the diversion of the drained water back into the water cooling tank 03; Secondly, as Figure 15 shown, there is a clearance space between one end of the first guide roller 031 close to the side frame 1 and the inner side wall of the water cooling tank 03 for the fixed arm 21 to pass through, avoiding the first guide roller 031 from blocking and interfering with the movement of the fixed arm 21, and thus facilitating the traction mechanism 3 to traction the strip material 08 to pass under the first guide roller 031.

[0036] In addition, as Figure 5 and Figure 7As shown, a roller 22 is rotatably sleeved outside the connecting rod 2. The roller 22 is limited and clamped in the bent guiding groove 11. When the driving mechanism 4 drives the connecting rod 2 to move along the bent guiding groove 11, the roller 22 fits against the inner wall of the bent guiding groove 11 and rolls, reducing friction and ensuring the smooth stability of the moving process of the connecting rod 2. Embodiment 2

[0037] Please refer to Figure 9 and Figure 10 , the difference between this embodiment and Embodiment 1 is that: The traction mechanism 3 further includes a first driving motor 36, a pair of mounting seats 33, a pair of rotating shafts 34 and a pair of mounting plates 35. A pair of mounting seats 33 are symmetrically fixed on one side of the cantilever 31 close to the granulator 05. Rotating shafts 34 are rotatably mounted on both mounting seats 33. Mounting plates 35 are fixed to the ends of the two rotating shafts 34 close to each other, and the rotating shafts 34 provide the rotation ability for the mounting plates 35; A first driving motor 36 is fixed to the side of one of the mounting seats 33. The output shaft of the first driving motor 36 is fixedly connected to the end of the rotating shaft 34 on the same side. The conveyor belt 37 is installed between the two mounting plates 35. By the operation of the first driving motor 36, the rotating shaft 34 and the mounting plate 35 on the same side are driven to rotate, and the rotating shaft 34 and the mounting plate 35 on the other side follow, so as to drive the conveyor belt 37 to swing and adjust; When the connecting rod 2 is not in the third horizontal portion 114, the conveyor belt 37 is in a horizontally extending state, and the horizontally extending state is as Figure 9 shown; After the strip 08 falls into the V-shaped guiding groove 371, through the operation of the driving mechanism 4, the driving traction mechanism 3 moves towards the side of the granulator 05. The strip 08 is pulled by the traction mechanism 3 into the water cooling pool 03 and passes under the first guiding roller 031. The strip 08 is water-cooled in the water, and then the traction mechanism 3 pulls the strip 08 to move to the draining pool 04 and passes above the second guiding roller 041 for draining; When the connecting rod 2 moves into the third horizontal portion 114, the cooled strip 08 is cooled and hardened. By the operation of the first driving motor 36, the rotating shaft 34 is driven to rotate, so as to drive the conveyor belt 37 to rotate downward to a vertical state. The strip 08 disengages from each V-shaped guiding groove 371. Since the head of the strip 08 reaches the side of the conveyor belt 37 away from the cantilever 31 in advance, the strip 08 after hardening and separating from the conveyor belt 37 remains in a state of protruding from one side of the cantilever 31 for a certain length. Subsequently, the driving mechanism 4 continues to drive the connecting rod 2 and the traction mechanism 3 to feed towards the side of the granulator 05 until the extended portion of the strip 08 is guided into the feed port of the granulator 05. Under the action of the guide roller in the granulator 05, the strip 08 can be continuously pulled into the granulator 05 for granulation processing. Embodiment 3

[0038] Please refer to Figure 12 , the difference between this embodiment and Embodiment 2 is that: An annular cavity 5 is respectively arranged around each threading hole 32 inside the cantilever 31. Slide holes 51 that are all communicated with the annular cavity 5 are arranged in an annular array on the inner wall of the threading hole 32. A slide rod 52 is slidably installed through each slide hole 51. An arc-shaped dirt scraping member 53 is fixed to the end of each slide rod 52 extending into the threading hole 32. A spring 54 is sleeved outside each slide rod 52. One end of the spring 54 is correspondingly fixed to the arc-shaped dirt scraping member 53, and the other end is correspondingly fixed to the inner wall of the threading hole 32; Among them, four arc-shaped dirt scraping members 53 are provided in this application. Under the elastic restraint force of the spring 54, each arc-shaped dirt scraping member 53 can correspondingly abut to form a complete circular structure adapted to the outer diameter of the strip 08 after cooling and hardening forming.

[0039] As Figure 3 shown, a plurality of strip outlets 021 are evenly distributed on the side of the extrusion die 02. The strip outlet 021 is a hollow cylindrical structure. Each strip outlet 021 is in one-to-one correspondence and communication with the extrusion port of the extrusion die 02. The strip 08 extruded by the extrusion die 02 enters the strip outlet 021 from the extrusion port in one-to-one correspondence, and finally is discharged from the strip outlet 021.

[0040] Among them, the end of each strip outlet 021 is conical, and the minimum diameter is smaller than the inner diameter of the complete circular structure.

[0041] When the driving mechanism 4 drives the connecting rod 2 and the traction mechanism 3 to move to the limit position on one side of the extrusion die 02, since the minimum diameter of the strip outlet 021 is smaller than the inner diameter of the complete circular structure, after the strip outlet 021 enters the above-mentioned complete circular structure, it finally contacts and squeezes the arc-shaped dirt scraping member 53. The pressed arc-shaped dirt scraping member 53 pushes the slide rod 52 to move outwards. As Figure 13 shown, at this time, the spring 54 is compressed and stores energy. Furthermore, the strip outlet 021 can extend through the threading hole 32 to the other side of the cantilever 31, avoiding the strip 08 from being blocked by the arc-shaped dirt scraping member 53 and unable to normally fall onto the conveyor belt 37 when being discharged; When the driving mechanism 4 drives the connecting rod 2 and the traction mechanism 3 to move towards the granulator 05, after the strip outlet 021 disengages from between the arc-shaped dirt scraping members 53, under the elastic reset action of the spring 54, each arc-shaped dirt scraping member 53 is pushed to reset to form a complete circular structure, which is closely attached to the outer surface of the strip 08, increasing the adhesion firmness between the strip 08 and the strip 08, and avoiding the strip 08 from only adhering to the groove wall of the V-shaped guiding groove 371 and falling off during traction.

[0042] It should be noted that the step of the V-shaped guiding groove 371 running to pull the head of the strip 08 to the side of the conveyor belt 37 away from the cantilever 31 occurs before the strip outlet 021 disengages from between the arc-shaped scraping members 53, so as to prevent the arc-shaped scraping members 53 from adhering to the strip 08 after resetting to a circular structure and affecting the traction of the conveyor belt 37 on the strip 08.

[0043] The strip 08 is cooled and hardened and formed without adhering to the arc-shaped scraping members 53. Since when the strip 08 passes through the water cooling tank 03, the dirt in the water body will adhere to the surface of the strip 08. When the strip 08 is introduced into the granulator 05, as Figure 14 shown, the circular structure formed by the closing of the four arc-shaped scraping members 53 closely fits the outer wall of the strip 08, and the dirt attached to the outer wall of the strip 08 can be scraped off, improving the granulation quality. Embodiment 4

[0044] Please refer to Figure 6 and Figure 7 , the difference between this embodiment and Embodiment 3 is that: The driving mechanism 4 includes a threaded rod 42, a second driving motor 43, a nut seat 44 and a connecting arm 45. A plate frame 41 extending along its length direction is fixed on the top of the side frame 1. Two brackets 411 are symmetrically fixed on the side of the plate frame 41 away from the water cooling tank 03. The threaded rod 42 is rotatably installed between the two brackets 411. The second driving motor 43 is fixed on one of the brackets 411, and the output shaft is fixedly connected to one end of the threaded rod 42. The nut seat 44 is threadedly sleeved on the threaded rod 42 and is slidably fitted on the surface of the plate frame 41. The bottom end of the connecting arm 45 is fixed to the bottom surface of the nut seat 44. A connecting seat 46 is fixed to the bottom end of the connecting arm 45, and the connecting seat 46 is fixedly connected to the end of the connecting rod 2 away from the traction mechanism 3.

[0045] By the operation of the second driving motor 43, its output shaft drives the threaded rod 42 to rotate. The rotating threaded rod 42 threadedly drives the nut seat 44 to slide along the side of the plate frame 41. Under the connection action of the connecting arm 45 and the connecting seat 46, the connecting rod 2 and the traction mechanism 3 are driven to move synchronously, providing stable drive for the feeding and retracting of the traction mechanism 3.

[0046] Among them, as Figure 8 shown, the connecting arm 45 includes an outer cylinder 451 fixed to the nut seat 44 and a telescopic rod 452 fixed to the connecting seat 46. The telescopic rod 452 is slidably inserted into the outer cylinder 451. The outer cylinder 451 and the telescopic rod 452 form a telescopic structure to adapt to the height difference existing in the undulating change of the bending guiding groove 11; In addition, a vertically extending limiting sliding groove 453 is provided on the inner wall of the outer cylinder body 451. A sliding block 454 is fixed to the side of the telescopic rod 452. The sliding block 454 is fitted and limited in the limiting sliding groove 453 in a matching manner. The sliding cooperation between the limiting sliding groove 453 and the sliding block 454 plays a limiting role, ensuring that the telescopic rod 452 can only move vertically relative to the outer cylinder body 451, thereby preventing the telescopic rod 452, the connecting rod 2, and the traction mechanism 3 from deflecting. Embodiment 5

[0047] Please refer to Figure 4 , the difference between this embodiment and Embodiment 4 is as follows: A hot air box 06 is fixed to the side of the side frame 1 near the pelletizer 05. The bottom of the hot air box 06 has a downward blowing port. A sewage collection box 07 with an open top facing the blowing port is provided below the hot air box 06 on the side of the side frame 1. The strip material 08 can pass between the hot air box 06 and the sewage collection box 07; The hot air box 06 adopts the prior art. External air is sucked into the hot air box 06 by a fan, and the air is heated by the electric heating structure in the hot air box 06 and finally blown out from the lower blowing port to further blow hot air to dry the strip material 08 passing below; In addition, the side of the sewage collection box 07 is connected to an industrial vacuum cleaner through a pipeline (not shown in the figure). By the suction force generated by the operation of the industrial vacuum cleaner, the dirt scraped off by the circular structure formed by the arc-shaped dirt scraping member 53 can be sucked and collected.

[0048] It is also worth noting that the cross-section of the V-shaped guiding groove 371 in the present application is V-shaped. The strip material 08 with a circular cross-section falls on the V-shaped guiding groove 371, and the contact area between the two is small, which is convenient for the strip material 08 to break away from the V-shaped guiding groove 371 after hardening.

[0049] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art, so the control mode and circuit connection of the present invention will not be explained in detail.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

Claims

1. A recycling device for processing leftovers of ultra-high molecular weight polyethylene plates, comprising a screw extruder (01), an extrusion die (02), a water cooling tank (03), a draining tank (04), a pelletizer (05) arranged in sequence, and a side frame (1) arranged on the side of the water cooling tank (03), characterized in that: A bent guiding groove (11) penetrating through both sides is provided on the side frame (1), and a connecting rod (2) is installed through the bent guiding groove (11); A driving mechanism (4) for driving the reciprocating translation adjustment of the connecting rod (2) is provided on the top of the side frame (1); A traction mechanism (3) is arranged at the end of the connecting rod (2) on the side close to the water cooling tank (03), and the traction mechanism (3) is used for pulling the strip material (08) from the extrusion outlet of the screw extruder (01) into the pelletizer (05); The traction mechanism (3) includes a cantilever (31) and a conveyor belt (37); A fixed arm (21) is fixed at the end of the connecting rod (2), and the cantilever (31) is fixed at the bottom side of the fixed arm (21); A plurality of through holes (32) corresponding to the positions of the extrusion outlets one by one are evenly distributed on the cantilever (31), and the conveyor belt (37) is arranged on the side of the cantilever (31) close to the pelletizer (05).

2. The recycling device for processing leftovers of ultra-high molecular weight polyethylene plates according to claim 1, characterized in that: The bent guiding groove (11) sequentially has a first horizontal part (111), a second horizontal part (112), an inclined part (113) and a third horizontal part (114) along the direction from the screw extruder (01) to the pelletizer (05); When the connecting rod (2) is located in the first horizontal part (111), the through holes (32) are at the same height as the extrusion outlet; When the connecting rod (2) is located in the second horizontal part (112), the traction mechanism (3) can pull the strip material (08) to pass under the first guiding roller (031) in the water cooling tank (03); When the connecting rod (2) is located in the inclined part (113), the traction mechanism (3) can pull the strip material (08) to pass above the second guiding roller (041) in the draining tank (04); There is a clearance space for the fixed arm (21) to pass through between one end of the first guiding roller (031) close to the side frame (1) and the inner side wall of the water cooling tank (03).

3. The recycling device for processing leftovers of ultra-high molecular weight polyethylene plates according to claim 2, characterized in that: The traction mechanism (3) further includes a first driving motor (36), a pair of mounting seats (33), a pair of rotating shafts (34) and a pair of mounting plates (35); A pair of the mounting seats (33) are symmetrically fixed on the side of the cantilever (31) close to the pelletizer (05), the rotating shafts (34) are rotatably installed on the two mounting seats (33), and the mounting plates (35) are fixed at the ends of the two rotating shafts (34) close to each other; A first drive motor (36) is fixed to the side of the mounting seat (33) on one side, and an output shaft of the first drive motor (36) is fixedly connected to the end of the rotating shaft (34) on the same side; The conveyor belt (37) is installed between the two mounting plates (35); When the connecting rod (2) is not in the third horizontal portion (114), the conveyor belt (37) is in a horizontally extending state.

4. The ultra-high molecular weight polyethylene sheet processing waste material recycling equipment according to claim 3, characterized in that: A plurality of V-shaped guide grooves (371) are evenly distributed on the conveyor belt (37), and the V-shaped guide grooves (371) extend along the running direction of the conveyor belt (37); The positions of the V-shaped guide grooves (371) and the through holes (32) correspond one to one.

5. The ultra-high molecular weight polyethylene sheet processing waste material recycling equipment according to claim 1, characterized in that: An annular cavity (5) is respectively provided in the cantilever (31) around each of the through holes (32); Sliding holes (51) that are all connected to the annular cavity (5) are arranged in an annular array on the inner wall of the through hole (32); A sliding rod (52) is slidably installed in each of the sliding holes (51); An arc-shaped scraping member (53) is fixed to the end of each sliding rod (52) extending into the through hole (32); A spring (54) is sleeved on the outside of each of the slide bars (52), one end of the spring (54) being fixed to the arc-shaped scraper (53) and the other end being fixed to the inner wall of the through hole (32); Under the action of the elastic restraining force of the spring (54), each of the arc-shaped scraping members (53) can correspondingly abut to form a full-circular structure that matches the outer diameter of the strip material (08) after cooling and hardening.

6. The ultra-high molecular weight polyethylene sheet processing waste material recycling equipment according to claim 5, characterized in that: A plurality of strip outlets (021) are evenly distributed on the side of the extrusion die (02), and the strip outlets (021) are hollow cylindrical structures; Each of the strip outlets (021) is in one-to-one correspondence with an extrusion outlet of the extrusion die (02); The ends of each of the strip outlets (021) are in a conical shape, and the minimum diameter is smaller than the inner diameter of the full circular structure.

7. The ultra-high molecular weight polyethylene sheet processing waste material recycling equipment according to claim 1, characterized in that: The driving mechanism (4) comprises a threaded rod (42), a second driving motor (43), a nut seat (44) and a connecting arm (45); A plate frame (41) extending along the length direction is fixed on the top of the side frame (1); two brackets (411) are symmetrically fixed on one side of the plate frame (41) away from the water cooling pool (03); and the threaded rod (42) is rotatably mounted between the two brackets (411); The second driving motor (43) is fixed to the bracket (411) on one side, and the output shaft is fixedly connected to one end of the threaded rod (42); The nut seat (44) is threadably mounted on the threaded rod (42) and is slidably fitted with the surface of the plate frame (41); The bottom end of the connecting arm (45) is fixed to the bottom surface of the nut seat (44). A connecting seat (46) is fixed to the bottom end of the connecting arm (45), and the connecting seat (46) is fixedly connected to one end of the connecting rod (2) away from the traction mechanism (3).

8. The recycling equipment for processing leftovers of ultra-high molecular weight polyethylene plates according to claim 7, wherein: The connecting arm (45) includes an outer cylinder body (451) fixed to the nut seat (44) and a telescopic rod (452) fixed to the connecting seat (46); The telescopic rod (452) is slidably inserted into the outer cylinder body (451); A vertically extending limiting chute (453) is provided on the inner wall of the outer cylinder body (451). A sliding block (454) is fixed to the side of the telescopic rod (452), and the sliding block (454) is fitted and limited in the limiting chute (453).

9. The recycling equipment for processing leftovers of ultra-high molecular weight polyethylene plates according to claim 1, wherein: A roller (22) is rotatably sleeved outside the connecting rod (2), and the roller (22) is fitted and limited in the bending guide groove (11).

10. The recycling equipment for processing leftovers of ultra-high molecular weight polyethylene plates according to claim 7, wherein: A hot air box (06) is fixed to the side of the side frame (1) near the granulator (05). The bottom of the hot air box (06) has a downward air outlet; A sewage collection box (07) with a top opening facing the air outlet is provided below the hot air box (06) on the side of the side frame (1); The strip material (08) can pass between the hot air box (06) and the sewage collection box (07).

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