A thermoplastic elastomer forming production line

Abstract

The present invention discloses a thermoplastic elastomer forming production line, which includes an extruder, a water cooling device, an air cooling device and a pelletizing device. The air cooling device includes an air-cooled pelletizing machine base, on which a lower housing is fixed. The upper end of the lower housing is open. An upstream transition roller and a downstream transition roller are rotatably installed in the lower housing, and a number of conveying annular grooves are provided. An air outlet hood is arranged above the lower housing. An air outlet is provided on the air outlet hood. The air outlet hood is communicated with an air supply fan through an air supply pipe. A semiconductor refrigeration sheet is fixed on the air outlet hood. The lower housing is connected with a return air pipe, and the return air pipe is communicated with the air inlet of the air supply fan. A water discharge port is arranged at the bottommost end of the lower housing, and a plugging plate is detachably installed at the water discharge port. The air cooling device of the production line can cool the air in the air outlet hood, and the thermoplastic elastomer will harden due to the temperature reduction, thus facilitating pelletizing. At the same time, a certain amount of cold air is recovered by using the return air pipe, and the energy efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of thermoplastic elastomer forming, and particularly to a thermoplastic elastomer forming production line. Background Art

[0002] At present, the forming production line of thermoplastic elastomers mainly includes an extruder. A water cooling device for cooling the extruded strip-shaped thermoplastic elastomer is installed downstream of the extruder. An air cooling device for blowing and drying the strip-shaped thermoplastic elastomer is arranged downstream of the water cooling device. A pelletizing device for pelletizing the strip-shaped thermoplastic elastomer is arranged downstream of the air cooling device. Its forming process is mainly as follows: After the raw materials are mixed, they are added to the extruder. Then the extruder melts and extrudes them into strips. Then the strip-shaped thermoplastic elastomer is cooled in a water cooling tank, and then the surface of the strip-shaped thermoplastic elastomer is dried by blowing. Finally, pelletizing is carried out after drying. However, since there are many types of thermoplastic elastomers, some thermoplastic elastomers have relatively high hardness, and there are also thermoplastic elastomers with a hardness generally lower than 40 degrees SHORE A. Therefore, when using this production line for cutting, there will be a problem. When pelletizing a soft thermoplastic elastomer, it cannot be cut off, that is, there will be many serrated long strips. The so-called long strips are 4 - 10 cm long with several cuts in the middle, forming a serrated shape. Under normal circumstances, these long strips should all be cut off by the rotating pelletizing blade group. However, due to the softness of the material, the uncut particles are connected into long strips.

[0003] In addition, the current pelletizing device mainly includes a fixed knife and a rotating moving knife. The distance between the fixed knife and the rotating moving knife is determined before installation and commissioning. When it is necessary to cut a soft elastomer, generally, the distance between the fixed knife and the moving knife needs to be reduced. Since it has been determined before installation and commissioning, if the distance needs to be adjusted, generally, the distance adjustment is achieved by adding or reducing gaskets, and the adjustment operation is very troublesome. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a thermoplastic elastomer forming production line. The air cooling device of this production line uses a semiconductor refrigeration sheet to cool the air in the air outlet housing. In this way, the air blown on the surface of the thermoplastic elastomer has a relatively low temperature. In this way, the thermoplastic elastomer will harden due to the temperature reduction, thus facilitating pelletizing. At the same time, a certain amount of cold air is recovered by the return air pipe, and the energy efficiency is higher.

[0005] To solve the above technical problems, the technical solution of the present invention is: a thermoplastic elastomer forming production line, including an extruder. A water cooling device for water cooling the extruded strip-shaped thermoplastic elastomer is installed downstream of the extruder. An air cooling device for blowing and drying the strip-shaped thermoplastic elastomer is arranged downstream of the water cooling device. A granulating device for granulating the strip-shaped thermoplastic elastomer is arranged downstream of the air cooling device. The air cooling device includes an air-cooled granulating machine base. A lower housing is fixed on the air-cooled granulating machine base. The upper end of the lower housing is open. An upstream transition roller and a downstream transition roller are rotatably installed in the lower housing. A plurality of conveying annular grooves for conveying the strip-shaped thermoplastic elastomer are arranged on both the upstream transition roller and the downstream transition roller. An air outlet cover shell is arranged above the lower housing. An air outlet is arranged on the air outlet cover shell. The air outlet cover shell is communicated with the air outlet of an air supply fan through an air supply pipe. A semiconductor refrigeration sheet is fixed on the air outlet cover shell. The lower housing is connected with a return air pipe. The return air pipe is communicated with the air inlet of the air supply fan. A water discharge port is arranged at the bottommost end of the lower housing. A plugging plate is detachably installed at the water discharge port.

[0006] As a preferred solution, the lower bottom plate of the air outlet cover shell is a cylindrical bottom plate. The number of the air outlets is multiple and they are arranged on the cylindrical bottom plate. The cylindrical bottom plate covers the upstream transition roller and the downstream transition roller.

[0007] As a preferred solution, the air supply fan is fixed on the air-cooled granulating machine base. The air outlet of the air supply fan is arranged upward. The air supply pipe is a metal pipe with adjustable length. The lower end of the air supply pipe is fixed on the air supply fan and connected with the air outlet of the air supply fan. The air outlet cover shell is fixed at the upper end of the air supply pipe and supported by the air supply pipe.

[0008] As a preferred solution, the air supply pipe includes a lower pipe section and an upper pipe section. The upper pipe section is inserted into the lower pipe section. A sealing ring is arranged between the upper pipe section and the lower pipe section. A locking bolt for locking the upper pipe section is arranged on the lower pipe section.

[0009] As a preferred solution, one end of the plugging plate is hinged to the bottom of the lower housing. The other end of the plugging plate is locked with the edge of the water discharge port through a buckle. The bottom of the lower housing is conical. The connection position of the return air pipe is located on the conical surface of the lower housing. An air supplement port is also arranged on the return air pipe.

[0010] As a preferred solution, the pelletizer device includes a pelletizer base, the pelletizer base is provided with a left side plate and a right side plate, a pelletizing space is formed between the left side plate and the right side plate, a fixed knife is fixed to the left side plate and the right side plate, a clamping mechanism for clamping and conveying a strip of thermoplastic elastomer is provided on the left side plate and the right side plate upstream of the fixed knife, a guiding device for conveniently guiding the thermoplastic elastomer is provided upstream of the clamping mechanism, a sliding support seat is slidably installed between the left side plate and the right side plate, a moving knife shaft is rotatably installed on the sliding support seat, and the moving knife shaft The extension direction of the knife shaft is parallel to the length direction of the fixed knife, the sliding direction of the sliding support seat is perpendicular to the extension direction of the moving knife shaft, a motor support is slidably installed on the pelletizer seat, the sliding direction of the motor support is the same as the sliding direction of the sliding support seat, a driving motor connected to the moving knife shaft is fixedly installed on the motor support, a plurality of circumferentially evenly distributed blades are arranged on the moving knife shaft, the blades cooperate with the blade of the fixed knife to pelletize the strip-shaped thermoplastic elastomer, and an adjustment mechanism for adjusting the position of the sliding support seat is installed on the pelletizer seat.

[0011] As a preferred solution, the adjustment mechanism includes a fixed seat fixed on the pelletizer seat, an adjustment slide is slidably mounted on the fixed seat, a screw and nut mechanism for facilitating the adjustment of the adjustment slide is arranged between the adjustment slide and the fixed seat, the sliding support seat and the adjustment slide are fixed to each other, the screw of the screw and nut mechanism serves as an operating execution component, and a locking structure is arranged between the fixed seat and the adjustment slide.

[0012] As a preferred solution, the clamping mechanism includes an active conveying roller rotatably installed between a left plate and a right plate, a rough surface is arranged on the roller surface of the active conveying roller, a conveying motor transmission-connected to the active conveying roller is arranged on the machine base, and a sway frame is also swungly installed on the left plate and the right plate, one end of the sway frame is hinged to the upper ends of the left plate and the right plate, an upper pressure roller is rotatably installed on the sway frame, and a pressure regulating mechanism for adjusting the pressure between the upper pressure roller and the active conveying roller is arranged on the sway frame.

[0013] As a preferred solution, the pressure regulating mechanism includes an operating screw arranged on the deflection frame, the free end of the operating screw faces the upstream direction of the conveying, and the operating screw is rotatably mounted with a pressure regulating nut.

[0014] As a preferred solution, the yaw frame includes a first swing link, a second swing link, and a connecting rod connecting the first swing link and the second swing link. The operating screw is arranged on the connecting rod. One ends of the first swing link and the second swing link are hinged to the upper ends of the left side plate and the right side plate. Inner sides of the middles of the first swing link and the second swing link are hinged with a first hinge arm and a second hinge arm. Free ends of the first hinge arm and the second hinge arm are respectively hinged with a first pressure roller seat and a second pressure roller seat. The upper pressure roller is rotatably installed on the first pressure roller seat and the second pressure roller seat. Clamping protrusions are respectively arranged on outer sides of the first pressure roller seat and the second pressure roller seat. Corresponding clamping grooves corresponding to the clamping protrusions are arranged on inner sides of the left side plate and the right side plate. When the clamping protrusions are in the clamping grooves, the upper pressure roller and the active conveying roller are cooperatively used for conveying.

[0015] After adopting the above technical solution, the effects of the present invention are as follows: Since the thermoplastic elastomer forming production line includes an extruder, a water cooling device for water cooling the extruded strip-shaped thermoplastic elastomer is installed downstream of the extruder, an air cooling device for blowing and drying the strip-shaped thermoplastic elastomer is arranged downstream of the water cooling device, and a granulating device for granulating the strip-shaped thermoplastic elastomer is arranged downstream of the air cooling device. The air cooling device includes an air-cooled granulating machine base, a lower housing is fixed on the air-cooled granulating machine base, the upper end of the lower housing is open, an upstream transition roller and a downstream transition roller are rotatably installed in the lower housing, and a plurality of conveying annular grooves for conveying the strip-shaped thermoplastic elastomer are arranged on both the upstream transition roller and the downstream transition roller. An air outlet cover is arranged above the lower housing, and an air outlet is arranged on the air outlet cover. The air outlet cover is communicated with the air outlet of the air supply fan through an air supply pipe. A semiconductor refrigerating sheet is fixed on the air outlet cover. The lower housing is connected with a return air pipe, and the return air pipe is communicated with the air inlet of the air supply fan. A water discharge port is arranged at the bottommost end of the lower housing, and a sealing plate is detachably installed at the water discharge port. First, the thermoplastic elastomer is put into the extruder and heated and extruded into a strip-shaped thermoplastic elastomer. Then, the strip-shaped thermoplastic elastomer is conveyed to the water cooling device for water cooling and temperature reduction. After the water cooling is completed, it is continuously conveyed to the upstream transition roller of the air cooling device, and then conveyed from the upstream transition roller to the downstream transition roller, passing through the air outlet cover. At this time, the air supply fan conveys gas through the air supply pipe, and the semiconductor refrigerating sheet in the air outlet cover starts to refrigerate, cooling the air conveyed into the air outlet cover, and then blowing air from the air outlet to air-cool and dry the strip-shaped thermoplastic elastomer on the lower housing. At this time, the blown cold air enters the return air pipe and flows back to the air supply fan for recycling. After continuous air-cooling and drying, the moisture on the surface of the strip-shaped thermoplastic elastomer is blown off and drips to the bottom of the lower housing. The sealing plate is opened, so that the accumulated water can be discharged from the water discharge port. The strip-shaped thermoplastic elastomer is conveyed to the granulating device for granulating after air-cooling, thus completing the production. The air cooling device of this production line uses a semiconductor refrigerating sheet to cool the air in the air outlet cover, so that the air blown on the surface of the thermoplastic elastomer has a relatively low temperature. In this way, the thermoplastic elastomer will harden due to the temperature reduction, which is convenient for granulating. At the same time, a certain amount of cold air is recovered by using the return air pipe, and the energy efficiency is higher.

[0016] Also, since the lower bottom plate of the air outlet cover is a cylindrical bottom plate, the number of air outlets is multiple and they are arranged on the cylindrical bottom plate, and the cylindrical bottom plate covers the upstream transition roller and the downstream transition roller; the cylindrical bottom plate can make the air outlet more concentrated and the cooling effect better. And while ensuring the concentrated blowing, the blowing range is larger, effectively cooling fully and improving the efficiency.

[0017] Moreover, since the air supply fan is fixed on the air-cooled pelletizer base, the air outlet of the air supply fan is arranged upward, the air supply pipe is a metal pipe with adjustable length, the lower end of the air supply pipe is fixed on the air supply fan and connected to the air outlet of the air supply fan, and the air outlet hood is fixed on the upper end of the air supply pipe and supported by the air supply pipe; by adjusting the length of the metal pipe, the cooling effect can be controlled, so as to cool different thermoplastic elastomers to different degrees, with better pertinence.

[0018] Moreover, since the air supply pipe includes a lower pipe section and an upper pipe section, the upper pipe section is inserted into the lower pipe section, a sealing ring is arranged between the upper pipe section and the lower pipe section, and a locking bolt for locking the upper pipe section is arranged on the lower pipe section; in this way, directly inserting the upper pipe section into the lower pipe section can effectively seal through the sealing ring, and the installation is simple and fast, ensuring good sealing performance.

[0019] Moreover, since one end of the plugging plate is hinged to the bottom of the lower shell, the other end of the plugging plate is locked with the edge of the water discharge port through a lock, the bottom of the lower shell is conical, the connection position of the return air pipe is located on the conical surface of the lower shell, and an air supplement port is also arranged on the return air pipe; in this way, it is quick and convenient to open the plugging plate, improving the efficiency, and the conical bottom of the lower shell is convenient for accumulating and discharging the blown-off water, reducing the blown-off water droplets from entering the return air pipe; and then the air supplement port ensures sufficient air volume when the air outlet discharges air.

[0020] Furthermore, since the pelletizer device includes a pelletizer base, the pelletizer base is provided with a left side plate and a right side plate, a pelletizing space is formed between the left side plate and the right side plate, fixed knives are fixed on the left side plate and the right side plate, and a clamping mechanism for clamping and conveying strip-shaped thermoplastic elastomer is provided on the left side plate and the right side plate upstream of the fixed knife, and a guiding device for conveniently guiding the thermoplastic elastomer is provided upstream of the clamping mechanism, a sliding support seat is slidably installed between the left side plate and the right side plate, a moving knife shaft is rotatably installed on the sliding support seat, the extension direction of the moving knife shaft is parallel to the length direction of the fixed knife, the sliding direction of the sliding support seat is perpendicular to the extension direction of the moving knife shaft, and a motor support is slidably installed on the pelletizer base, and the sliding direction of the motor support is perpendicular to the extension direction of the sliding support seat. The sliding direction is the same, a driving motor connected to the moving knife shaft is fixedly installed on the motor support, and a plurality of blades evenly distributed around the circumference are arranged on the moving knife shaft, and the blades cooperate with the blades of the fixed knife to pelletize the strip-shaped thermoplastic elastomer, and an adjusting mechanism for adjusting the position of the sliding support seat is installed on the pelletizer seat; the thermoplastic elastomer is guided and transported to the clamping mechanism through the guide device, and then the clamping mechanism continues to transport the thermoplastic elastomer to the moving knife shaft, and then the moving knife shaft is slid so that it is in the required pelletizing gap with the fixed knife, and then the driving motor drives the moving knife shaft to rotate, and the blade on the moving knife shaft is tangent to the blade of the fixed knife to complete the pelletizing of the thermoplastic elastomer; the pelletizing device can better adjust the distance between the fixed knife and the moving knife to meet the pelletizing requirements of thermoplastic elastomers with different hardness.

[0021] Furthermore, since the adjustment mechanism includes a fixed seat fixed on the pelletizer seat, an adjustment slide is slidably mounted on the fixed seat, a screw nut mechanism for conveniently adjusting the adjustment slide is provided between the adjustment slide and the fixed seat, the sliding support seat and the adjustment slide are fixed to each other, the screw of the screw nut mechanism serves as an operating execution component, and a locking structure is provided between the fixed seat and the adjustment slide.

[0022] Furthermore, since the clamping mechanism includes an active conveying roller rotatably installed between the left plate and the right plate, a rough surface is arranged on the roller surface of the active conveying roller, a conveying motor transmission-connected to the active conveying roller is arranged on the machine base, and a sway frame is also swungly installed on the left plate and the right plate, one end of the sway frame is hinged to the upper ends of the left plate and the right plate, an upper pressure roller is rotatably installed on the sway frame, and a pressure regulating mechanism for adjusting the pressure between the upper pressure roller and the active conveying roller is arranged on the sway frame; in this way, the adjusting slide can be driven to slide by adjusting the lead screw, and fine adjustments can be made by the lead screw, and then locked by the locking structure, so that the adjustment is quick and accurate, and the efficiency is improved.

[0023] Also, since the pressure regulating mechanism includes an operating screw disposed on the swing frame, the free end of the operating screw faces the upstream direction of the conveying, and a pressure regulating nut is rotatably installed on the operating screw; by rotating the pressure regulating nut, the pressure regulating nut can be in different positions on the operating screw, and the downward pressure will change, ensuring quick and accurate pressure regulation.

[0024] Also, since the swing frame includes a first swing link, a second swing link, and a connecting rod connecting the first swing link and the second swing link, the operating screw is disposed on the connecting rod. One ends of the first swing link and the second swing link are hinged to the upper ends of the left side plate and the right side plate. Inner sides of the middle parts of the first swing link and the second swing link are hinged with a first hinge arm and a second hinge arm respectively. Free ends of the first hinge arm and the second hinge arm are respectively hinged with a first roller seat and a second roller seat. The upper roller is rotatably installed on the first roller seat and the second roller seat. Clamping protrusions are respectively arranged on outer sides of the first roller seat and the second roller seat, and corresponding clamping grooves corresponding to the clamping protrusions are arranged on inner sides of the left side plate and the right side plate. When the clamping protrusions are in the clamping grooves, the upper roller and the driving conveying roller cooperate for conveying; in this way, the upper roller can be swung, and when in use, the clamping protrusions of the first roller seat and the second roller seat are clamped in, improving the flexibility of the device. Brief Description of the Drawings

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] Figure 1 is a perspective view of an embodiment of the present invention;

[0027] Figure 2 is a perspective view of the water cooling device of the embodiment of the present invention;

[0028] Figure 3 is a structural schematic diagram of the air outlet hood of the embodiment of the present invention;

[0029] Figure 4 is a structural schematic diagram of the lower housing of the embodiment of the present invention;

[0030] Figure 5 is a structural schematic diagram of the buckle at the water discharge port of the embodiment of the present invention;

[0031] Figure 6 is a perspective view of the pelletizing device of the embodiment of the present invention;

[0032] Figure 7 is a rear view of the pelletizing device of the embodiment of the present invention;

[0033] Figure 8 is a top view of the pelletizing device of the embodiment of the present invention;

[0034] Figure 9 isFigure 8 Cross-sectional view taken along A-A;

[0035] Figure 10 is a schematic structural view of the adjusting mechanism of the embodiment of the present utility model;

[0036] In the drawings: 1, pelletizer base; 2, left side plate; 3, right side plate; 4, pelletizing space; 5, left housing; 6, right housing; 7, fixed knife; 8, door panel; 9, guiding support; 10, guiding roller; 101, annular guiding ring groove; 11, active conveying roller; 12, conveying motor; 13, supporting knife seat; 14, conical channel; 15, moving knife shaft; 151, blade; 16, first guide rail; 17, first slider; 18, second guide rail; 19, second sliding seat; 20, driving motor; 21, fixing seat; 22, adjusting sliding seat; 23, locking plate; 231, strip-shaped through hole; 24, locking screw; 25, fixing block; 26, upper pressing roller; 27, first pressing roller seat; 28, second pressing roller seat; 29, clamping projection; 30, clamping groove; 31, first articulated arm; 32, second articulated arm; 33, first swing link; 34, second swing link; 35, operating screw; 36, pressure regulating nut; 37, connecting rod; 38, upper housing; 39, collection outlet; 40, air-cooled pelletizer base; 41, lower housing; 42, upstream transition roller; 43, downstream transition roller; 44, conveying ring groove; 45, air outlet housing; 451, air outlet; 46, air supply fan; 47, lower pipe section; 48, upper pipe section; 49, sealing ring; 50, sealing groove; 51, locking bolt; 52, semiconductor refrigeration sheet; 53, return air pipe; 54, water drain port; 55, blocking plate; 56, lock; 57, air supplement port; 58, cooling water tank; 59, water tank support; 60, water outlet pipe; 61, water outlet; 62, water injection port; 63, water inlet pipe; 64, upstream water-cooled conveying roller; 65, downstream water-cooled conveying roller; 66, support plate; 67, sliding plate; 68, sliding groove; 69, fixing screw; 70, screw extruder. Detailed implementation manners

[0037] The present invention will be further described in detail below through specific embodiments.

[0038] As Figures 1 to 10As shown in the figure, a thermoplastic elastomer forming production line includes an extruder. A water cooling device for water cooling the extruded strip-shaped thermoplastic elastomer is installed downstream of the extruder. An air cooling device for blowing and drying the strip-shaped thermoplastic elastomer is arranged downstream of the water cooling device. A granulating device for granulating the strip-shaped thermoplastic elastomer is arranged downstream of the air cooling device. The air cooling device includes an air cooling granulating machine base 40. A lower shell 41 is fixed on the air cooling granulating machine base 40. The upper end of the lower shell 41 is open. An upstream transition roller 42 and a downstream transition roller are rotatably installed in the lower shell 41. A plurality of conveying ring grooves 44 for conveying the strip-shaped thermoplastic elastomer are arranged on both the upstream transition roller 42 and the downstream transition roller 43. An air outlet hood 45 is arranged above the lower shell 41. An air outlet 451 is arranged on the air outlet hood 45. The air outlet hood 45 is communicated with the air outlet of an air supply fan 46 through an air supply pipe. A semiconductor refrigerating sheet 52 is fixed on the air outlet hood 45. The lower shell 41 is connected with a return air pipe 53. The return air pipe 53 is communicated with the air inlet of the air supply fan 46. A water discharge port 54 is arranged at the bottom most end of the lower shell 41. A plugging plate 55 is detachably installed at the water discharge port 54.

[0039] In this embodiment, the lower bottom plate of the air outlet hood 45 is a cylindrical bottom plate. The number of the air outlets 451 is multiple and they are arranged on the cylindrical bottom plate. The cylindrical bottom plate covers the upstream transition roller 42 and the downstream transition roller. Arranging as many air outlets 451 as possible can maximize the air output. And the cylindrical bottom plate can make the air output more concentrated, with better cooling effect. Moreover, the cylindrical bottom plate can cover the upstream transition roller 42 and the downstream transition roller, so that while ensuring the concentrated blowing, the blowing range is larger, and the cooling can be carried out fully and effectively, improving the efficiency.

[0040] As Figure 3 and Figure 4 As shown in the figure, the air supply fan 46 is fixed on the air cooling granulating machine base 40. The air outlet of the air supply fan 46 is arranged upward. The air supply pipe is a metal pipe with adjustable length. The lower end of the air supply pipe is fixed on the air supply fan 46 and connected with the air outlet of the air supply fan 46. The air outlet hood 45 is fixed at the upper end of the air supply pipe and supported by the air supply pipe. By adjusting the length of the metal pipe, the cooling effect can be controlled, so as to cool different thermoplastic elastomers to different degrees, with better pertinence.

[0041] Furthermore, the air supply pipe includes a lower pipe section 47 and an upper pipe section 48, the upper pipe section 48 is inserted into the lower pipe section 47, a sealing ring 49 is arranged between the upper pipe section 48 and the lower pipe section 47, and a locking bolt 51 for locking the upper pipe section 48 is arranged on the lower pipe section 47; three layers of sealing grooves 50 are arranged on the lower pipe section 47, and the sealing ring 49 is stuck in the sealing groove 50, so that the upper pipe section 48 can be effectively sealed after being inserted into the lower pipe section 47, and then the locking bolt 51 contacts the upper pipe section 48 to fix the distance between the upper pipe section 48 and the lower pipe section 47, so that the installation is simple and quick, and good sealing can be guaranteed.

[0042] In this embodiment, one end of the blocking plate 55 is hinged to the bottom of the lower shell 41, and the other end of the blocking plate 55 is locked with the edge of the drain port 54 by a lock buckle 56; this makes disassembly quick and convenient, and improves efficiency; Figure 5 As shown, the lock 56 is a conventionally available device and therefore will not be described in detail herein.

[0043] Furthermore, the bottom of the lower shell 41 is conical, and the connection position of the return air pipe 53 is located on the conical surface of the lower shell 41. The conical surface facilitates the dripping water droplets to flow to the bottom of the lower shell 41, and accumulates the blown water for easy discharge, thereby reducing the water from entering the return air pipe 53 and affecting the blowing.

[0044] The return air pipe 53 is also provided with an air supply port 57 , which ensures that the air volume at the air outlet is sufficient.

[0045] like Figures 6 to 8 As shown, the pelletizer device includes a pelletizer base 1, and the pelletizer base 1 is provided with a left side plate 2 and a right side plate 3, and a pelletizing space 4 is formed between the left side plate 2 and the right side plate 3, and a fixed knife 7 is fixed on the left side plate 2 and the right side plate 3, and a clamping mechanism for clamping and conveying a strip of thermoplastic elastomer is provided on the left side plate 2 and the right side plate 3 upstream of the fixed knife 7, and a guiding device for conveniently guiding the thermoplastic elastomer is provided upstream of the clamping mechanism, and a sliding support seat is slidably installed between the left side plate 2 and the right side plate 3, and a moving knife shaft 15 is rotatably installed on the sliding support seat, and the moving knife shaft 15 The extension direction is parallel to the length direction of the fixed knife 7, the sliding direction of the sliding support seat is perpendicular to the extension direction of the moving knife shaft 15, and a motor support is slidably installed on the pelletizer seat 1. The sliding direction of the motor support is the same as the sliding direction of the sliding support seat. A driving motor 20 that is transmission-connected to the moving knife shaft 15 is fixedly installed on the motor support. A plurality of circumferentially evenly distributed blades 151 are arranged on the moving knife shaft 15. The blades 151 cooperate with the blade of the fixed knife 7 to pelletize the strip-shaped thermoplastic elastomer. An adjustment mechanism for adjusting the position of the sliding support seat is installed on the pelletizer seat 1.

[0046] In this embodiment, the adjustment mechanism includes a fixed seat 21 fixed to the granulator base 1. An adjustment sliding seat 22 is slidably installed on the fixed seat 21. A lead screw nut mechanism for facilitating the adjustment of the adjustment sliding seat 22 is provided between the adjustment sliding seat 22 and the fixed seat 21. The sliding support seat is fixed to the adjustment sliding seat 22. The lead screw of the lead screw nut mechanism serves as an operation execution component. A locking structure is provided between the fixed seat 21 and the adjustment sliding seat 22. The sliding support seat includes a first guide rail 16 and a first slider 17. The adjustment sliding seat 22 is fixedly connected to the first slider 17. Since the fixed seat 21 is stationary, when the lead screw is rotated, the nut is driven to rotate, thereby driving the adjustment sliding seat 22 to move linearly. In this way, the moving knife shaft 15 can be driven to move along the first guide rail 16 through the first slider 17. The locking structure includes a locking plate 23 fixedly installed on the fixed seat 21. A strip-shaped through hole 231 is formed in the locking plate 23. A locking screw 24 is rotatably installed on the strip-shaped through hole 231. The locking screw 24 is locked by tightly pressing against the adjustment sliding seat 22 through rotation, and the locking screw 24 can reciprocally slide between the strip-shaped through holes 231. In this way, by adjusting between the fixed seat 21 and the adjustment sliding seat 22, the moving knife shaft 15 can be moved, so that the distance between the moving knife shaft 15 and the fixed knife 7 can be changed, thereby changing the size of the granulation. In this way, the adjustment is fast and accurate, improving the efficiency.

[0047] The fixed knife 7 is fixed by a support knife seat 13 fixedly installed on the base. A gap for just clamping the fixed knife 7 is provided on the support knife seat 13, and the upper surface of the support knife seat 13 is a plane, which is convenient for the movement of the strip-shaped thermoplastic elastomer.

[0048] Furthermore, a left cover 5 and a right cover 6 are detachably provided on the left side of the left side plate 2 and the right side of the right side plate 3 on the machine base respectively. The motor support and the drive motor 20 are located inside the left cover 5 or the right cover 6, and the corresponding adjustment mechanism is located inside the right cover 6 or the left cover 5. The detachable left cover 5 and right cover 6 can facilitate the observation of the internal structure and the maintenance and disassembly of the interior, and can also protect the internal structure, improving the installation efficiency. The fixed seat 21 is fixedly installed on the left cover 5 or the right cover 6 through a fixing block 25, so that it can be effectively fixed. The motor support includes a second guide rail 18 and a second sliding seat 19. The drive motor 20 is fixedly installed on the second sliding seat 19, so as to ensure that the drive motor 20 moves synchronously with the moving knife shaft 15.

[0049] In this embodiment, the guiding device includes a door panel 8, one end of which is hinged on the left panel 2 or the right panel 3 and is located on the upstream side. A guiding support 9 is fixed on the panel surface of the door panel 8, and a guide roller 10 is rotatably mounted on the guide support 9. A plurality of annular guiding grooves 101 are provided on the guide roller 10; the annular guiding grooves 101 are adapted to the strip-shaped thermoplastic elastomer, so that the strip-shaped thermoplastic elastomer can be placed on the guide roller 10, which is convenient for rolling and conveying by the guide roller 10 after placement one by one, thereby improving the conveying efficiency; opening the door panel 8 also facilitates effective operation of the interior.

[0050] In the present embodiment, the clamping mechanism includes an active conveying roller 11 rotatably installed between the left side plate 2 and the right side plate 3, the roller surface of the active conveying roller 11 is provided with a rough surface, the machine base is provided with a conveying motor 12 which is transmission-connected to the active conveying roller 11, and the left side plate 2 and the right side plate 3 are also swingably installed with a sway frame, one end of the sway frame is hinged to the upper end of the left side plate 2 and the right side plate 3, an upper pressure roller 26 is rotatably installed on the sway frame, and a pressure regulating mechanism for regulating the pressure between the upper pressure roller 26 and the active conveying roller 11 is provided on the sway frame; the rough surface provided on the roller surface of the active conveying roller 11 can increase the friction force and improve the conveying efficiency, and the upper pressure roller 26 can better press down the strip-shaped thermoplastic elastomer, which can further improve the conveying efficiency, and the upper pressure roller 26 can generate different downward pressures through the pressure regulating mechanism, and generate corresponding downward pressures for different strip-shaped thermoplastic elastomers, thereby ensuring smooth conveying.

[0051] Furthermore, the pressure regulating mechanism includes an operating screw 35 arranged on the yaw frame, the free end of the operating screw 35 is facing the upstream direction of the conveying, and the operating screw 35 is rotatably installed with a pressure regulating nut 36; by rotating the pressure regulating nut 36, the pressure regulating nut 36 can be placed in different positions on the operating screw 35, and the downward pressure will change, thereby ensuring that the pressure regulation is quick and accurate.

[0052] like Figure 10As shown, the deflection frame includes a first swing link 33, a second swing link 34 and a connecting rod 37 connecting the first swing link 33 and the second swing link 34, and the operating screw 35 is arranged on the connecting rod. One end of the first swing link 33 and the second swing link 34 is hinged to the upper end of the left plate 2 and the right plate 3, and the first swing link and the second swing link are hinged to the inner side of the middle part with the first hinge arm 31 and the second hinge arm 32, and the free ends of the first hinge arm 31 and the second hinge arm 32 are respectively hinged to the first hinge arm 31 and the second hinge arm 32. A pressure roller seat 27 and a second pressure roller seat 28, the upper pressure roller 26 is rotatably mounted on the first pressure roller seat 27 and the second pressure roller seat 28, the outer side surfaces of the first pressure roller seat 27 and the second pressure roller seat 28 are respectively provided with a clamping protrusion 29, and the corresponding inner side surfaces of the left plate 2 and the right plate 3 are provided with a clamping groove 30 corresponding to the clamping protrusion. When the clamping protrusion 29 is in the clamping groove 30, the upper pressure roller 26 cooperates with the active conveying roller 11 for conveying; since the first swing link 33, the second swing link 34 and the connecting rod 37 are an integral The first swing link 33, the second swing link 34 and the connecting rod 37 can be driven to deflect by pulling the operating screw 35, and then the first hinge arm 31 and the second hinge arm 32 can be driven to swing upward. At this time, the clamping protrusion 29 is in the clamping groove 30, and the clamping protrusion 29 rises along the clamping groove 30 until it is out of the clamping groove 30. The upper cover shell 38 is also installed on the left plate 2 and the right plate 3. The upper cover shell 38 is deflected and installed between the left plate 2 and the right plate 3. In this way, impurities can be further prevented from entering the device during pelletizing. The device is effectively protected. Since the upper cover shell 38 is installed above the swing frame, after opening the upper cover shell 38, the operating screw 35 can swing against the upper cover shell 38, and the first pressure roller seat 27 and the second pressure roller seat 28 swing against the first swing link 33 and the second swing link 34 through the first articulated arm 31 and the second articulated arm 32. This effectively improves the flexibility of the device and facilitates the adjustment of the conveying distance between the upper pressure roller 26 and the active conveying roller 11. The swinging, pressing and adjusting mechanism of the upper pressure roller 26 is arranged together for the convenience of workers to operate and improve efficiency.

[0053] Furthermore, the upper pressure roller 26 is a rubber roller; the use of a rubber roller can effectively increase the service life, and has good elasticity, oil resistance, and high temperature resistance, further improving the conveying effect.

[0054] A collection outlet 39 is also provided below the moving knife shaft 15 for collecting the thermoplastic elastomer after pelletizing. The outer side of the collection outlet 39 is connected to a tapered channel 14 for convenient bagging and collection.

[0055] like Figure 2As shown, the water cooling device includes a cooling water tank 58 containing cold water. The cooling water tank 58 is supported and fixed by a water tank support 59. The bottom of the cooling water tank 58 is provided with a water outlet 61, and the water outlet 61 is communicated with a water outlet pipe 60, which facilitates the drainage of the cooling water tank 58. A water injection port 62 is opened on one side of the cooling water tank 58, and the water injection port 62 is communicated with a water inlet pipe 63. An upstream water cooling conveying roller 64 and a downstream water cooling conveying roller 65 are arranged on the cooling water tank 58. The upstream water cooling conveying roller 64 and the downstream water cooling conveying roller 65 are rotatably installed on a water cooling support slide. The water cooling support slide includes a support plate 66 for rotatably installing the upstream water cooling conveying roller 64 and the downstream water cooling conveying roller 65. A sliding plate 67 is fixedly connected below the support plate 66. Chute grooves 68 that are inserted into both sides of the cooling water tank 58 are arranged at both ends of the sliding plate 67. The chute grooves 68 at both ends of the sliding plate 67 are arranged in an up-and-down mirror image. In this way, the upstream water cooling conveying roller 64 is installed downward and is inside the cooling water tank 58, and the downstream water cooling conveying roller 65 is installed upward and is higher than the water level of the cooling water tank 58. Fixed screws 69 for restricting the movement of the upstream water cooling conveying roller 64 and the downstream water cooling conveying roller 65 are arranged on the chute grooves 68. By rotating the fixed screws 69 to penetrate the side of the chute grooves 68 and contact the side of the cooling water tank 58 to generate friction, the movement is restricted. Such a structure is simple and convenient to operate. In this way, after the thermoplastic elastomer is extruded from the extruder, it first enters the cooling water tank 58 and is supported by the upstream water cooling conveying roller 64. Then, after cooling, it is taken out of the water and supported by the downstream water cooling conveying roller 65, which is convenient for conveying to the upstream transition roller 42 of the air cooling device.

[0056] In this embodiment, the extruder is a screw extruder 70, which melts the raw materials by putting them into the feeding port and extrudes them into strips. The screw extruder 70 is a commercially available device, so it will not be described in detail in the text.

[0057] Working principle of this embodiment: First, the raw materials are mixed and then added to an extruder. After that, the extruder melts the materials and extrudes them into strip-shaped thermoplastic elastomers. Then, the thermoplastic elastomers are placed in the cooling water tank 58 and supported by the upstream water-cooled conveying roller 64. After cooling, they are taken out of the water and then supported by the downstream water-cooled conveying roller 65 and conveyed to the upstream transition roller 42. Then, they are conveyed to the downstream conveying roller through the upstream conveying roller. At this time, the blower blows air through the air supply pipe to the air outlet housing 45. At this time, the semiconductor refrigeration sheet 52 in the air outlet housing 45 starts to work to cool the flowing air. The cooled air is blown out from the air outlet 451 to air-cool and dry the thermoplastic elastomers between the upstream transition roller 42 and the downstream transition roller 43. The blown air then enters the return air pipe 53 and then enters the air supply pipe and enters the air outlet housing 45. At the same time, when blowing air, the water on the thermoplastic elastomers is blown off and drips onto the lower housing 41. When a certain amount of water accumulates at the bottom, by opening the lock 56, the blocking plate 55 is opened to discharge the accumulated water from the water discharge port 54. After repeating the air-cooling process, the dried strip-shaped thermoplastic elastomers are sequentially placed on the conveying guide roller 10, pass through the door panel 8 and enter the granulation space 4, and are on the driving conveying roller 11. At this time, the operating screw 35 is pulled to swing towards the guide roller 10. The first hinge arm 31 and the second hinge arm 32 drive the first roller seat 27 and the second roller seat 28 into the granulation space 4. At this time, the clamping protrusions 29 of the first roller seat 27 and the second roller seat 28 are clamped into the clamping grooves 30, and the upper roller 26 is then on the driving conveying roller 11. By rotating the pressure regulating nut 36, the upper roller 26 is pressed against the strip-shaped thermoplastic elastomers. Then, the lead screw is manually adjusted to cause a movement between the adjusting slide 22 and the fixed seat 21, driving the moving cutter shaft 15 to move along the first guide rail 16, and also driving the driving motor 20 to move together. After the adjusting slide 22 is adjusted to a suitable position, the locking screw 24 is rotated to complete the locking. The upper cover 38 is covered. Then, the driving motor 20 drives the moving cutter shaft 15 to rotate, and the conveying motor 12 drives the driving conveying roller 11 to rotate. The strip-shaped thermoplastic elastomers are conveyed to the fixed cutter 7, and the blades 151 on the moving cutter shaft 15 cooperate for granulation. The granulated thermoplastic elastomers fall into the conical channel 14 for collection.

[0058] The above-described embodiments are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and modifications made to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A thermoplastic elastomer forming production line, comprising an extruder, a water cooling device for water-cooling the extruded strip-shaped thermoplastic elastomer is installed downstream of the extruder, an air cooling device for air-drying the strip-shaped thermoplastic elastomer is arranged downstream of the water cooling device, and a granulating device for granulating the strip-shaped thermoplastic elastomer is arranged downstream of the air cooling device, characterized in that: The air cooling device comprises an air-cooled pelletizer base, a lower shell body is fixed on the air-cooled pelletizer base, the upper end of the lower shell body is open, an upstream transition roller and a downstream transition roller are rotatably installed in the lower shell body, and a plurality of conveying ring grooves for conveying strip-shaped thermoplastic elastomer are arranged on the upstream transition roller and the downstream transition roller, an air outlet shell is arranged above the lower shell body, and an air outlet is arranged on the air outlet shell, and the air outlet shell is connected with the air outlet of the air supply fan through an air supply pipe, a semiconductor refrigeration plate is fixed on the air outlet shell, the lower shell body is connected with a return air pipe, and the return air pipe is connected with the air inlet of the air supply fan, and a water drain is arranged at the bottom end of the bottom of the lower shell body, and a sealing plate is detachably installed at the water drain; the pelletizer device comprises a pelletizer base, and the pelletizer base is provided with a left side plate and a right side plate, a pelletizing space is formed between the left side plate and the right side plate, and a fixed A fixed knife is fixed, and a clamping mechanism for clamping and feeding the strip-shaped thermoplastic elastomer is arranged on the left plate and the right plate upstream of the fixed knife, and a guiding device for conveniently guiding the thermoplastic elastomer is arranged upstream of the clamping mechanism, and a sliding support seat is slidably installed between the left plate and the right plate, and a moving knife shaft is rotatably installed on the sliding support seat, and the extension direction of the moving knife shaft is parallel to the length direction of the fixed knife, and the sliding direction of the sliding support seat is perpendicular to the extension direction of the moving knife shaft, and a motor support is slidably installed on the pelletizer seat, and the sliding direction of the motor support is the same as the sliding direction of the sliding support seat, and a driving motor connected to the moving knife shaft is fixedly installed on the motor support, and a plurality of circumferentially evenly distributed blades are arranged on the moving knife shaft, and the blades cooperate with the blade of the fixed knife to pelletize the strip-shaped thermoplastic elastomer, and an adjusting mechanism for adjusting the position of the sliding support seat is installed on the pelletizer seat.

2. The thermoplastic elastomer forming production line according to claim 1, characterized in that: The lower bottom plate of the air outlet housing is a cylindrical bottom plate, the number of the air outlets is multiple and they are arranged on the cylindrical bottom plate, and the cylindrical bottom plate covers the upstream transition roller and the downstream transition roller.

3. The thermoplastic elastomer forming production line according to claim 2, characterized in that: The air supply fan is fixed on the air-cooled pelletizer base, the air outlet of the air supply fan is arranged upward, the air supply pipe is a metal pipe with adjustable length, the lower end of the air supply pipe is fixed on the air supply fan and connected to the air outlet of the air supply fan, and the air outlet cover is fixed on the upper end of the air supply pipe and supported by the air supply pipe.

4. The thermoplastic elastomer forming production line according to claim 3, characterized in that: The air supply pipe comprises a lower pipe section and an upper pipe section, the upper pipe section is inserted into the lower pipe section, a sealing ring is arranged between the upper pipe section and the lower pipe section, and a locking bolt for locking the upper pipe section is arranged on the lower pipe section.

5. The thermoplastic elastomer forming production line according to claim 4, characterized in that: One end of the blocking plate is hinged to the bottom of the lower shell, and the other end of the blocking plate is locked with the edge of the drain port by a lock buckle. The bottom of the lower shell is conical, and the connection position of the return air pipe is located on the conical surface of the lower shell. The return air pipe is also provided with an air supply port.

6. The thermoplastic elastomer forming production line according to claim 5, characterized in that: The adjustment mechanism includes a fixed seat fixed on the pelletizer seat, an adjustment slide is slidably mounted on the fixed seat, a screw nut mechanism for conveniently adjusting the adjustment slide is arranged between the adjustment slide and the fixed seat, the sliding support seat and the adjustment slide are fixed to each other, the screw of the screw nut mechanism serves as an operating execution component, and a locking structure is arranged between the fixed seat and the adjustment slide.

7. The thermoplastic elastomer forming production line according to claim 6, characterized in that: The clamping mechanism includes an active conveying roller rotatably installed between a left plate and a right plate, a rough surface is arranged on the roller surface of the active conveying roller, a conveying motor transmission-connected to the active conveying roller is arranged on the machine base, and a sway frame is also swungly installed on the left plate and the right plate, one end of the sway frame is hinged to the upper end of the left plate and the right plate, an upper pressure roller is rotatably installed on the sway frame, and a pressure regulating mechanism for regulating the pressure between the upper pressure roller and the active conveying roller is arranged on the sway frame.

8. The thermoplastic elastomer forming production line according to claim 7, characterized in that: The pressure regulating mechanism comprises an operating screw rod arranged on the deflection frame, the free end of the operating screw rod faces the upstream direction of the conveying, and the operating screw rod is rotatably mounted with a pressure regulating nut.

9. The thermoplastic elastomer forming production line according to claim 8, wherein: The sway frame includes a first swing link, a second swing link and a connecting rod connecting the first swing link and the second swing link, and the operating screw is arranged on the connecting rod, and one end of the first swing link and the second swing link is hinged on the upper end of the left plate and the right plate, and the first hinge arm and the second hinge arm are hinged on the inner side of the middle part of the first swing link and the second swing link, and the free ends of the first hinge arm and the second hinge arm are respectively hinged to the first pressure roller seat and the second pressure roller seat, and the upper pressure roller is rotatably installed on the first pressure roller seat and the second pressure roller seat, and the outer side surfaces of the first pressure roller seat and the second pressure roller seat are respectively provided with clamping protrusions, and the corresponding inner side surfaces of the left plate and the right plate are provided with clamping grooves corresponding to the clamping protrusions, and when the clamping protrusions are in the clamping grooves, the upper pressure roller cooperates with the active conveying roller for conveying.

Images