PET fiber core rod extrusion die structure

Abstract

The utility model relates to PET fiber mandrel technical field, specifically PET fiber mandrel extrusion die structure, including thermoforming machine, the fixed mounting of thermoforming machine has extrusion mould, the part of thermoforming machine close to extrusion mould is fixed with support mechanism, the fixed block of support mechanism is slidably installed, the cooling mechanism is installed on the fixed block, the cooling mechanism includes the clamping plate and the plug rod, the clamping plate is installed between two fixed blocks and is clamped, the bottom fixed connection of clamping plate has the plug rod, the plug rod is fixedly connected with the fixed block through the nut, a plurality of setting moulds are fixedly installed in the clamping plate equidistantly, the fixed connection of two fixed blocks has the support frame, a plurality of air outlet pipes are fixedly installed on the support frame equidistantly, the air outlet pipe is fixedly connected with the air inlet pipe, the air outlet pipe is obliquely arranged and the height is higher than the setting mould, the cold air can be accurately blown to the hot state mandrel surface just extruded from the extrusion mould, accelerates the heat dissipation, and is restricted with the cavity of setting mould, makes the mandrel solidification fast.

Description

Technical Field

[0001] This utility model relates to mold structure, specifically a PET fiber core rod extrusion mold structure, and belongs to the field of PET fiber core rod technology. Background Technology

[0002] In industrial production, extrusion dies, in conjunction with extruders and other equipment, enable the continuous production of mosquito repellent liquid cores. The extrusion die has a cavity of a specific shape. When loose fiber bundles reach a plastic state under heating, they are pushed into the extrusion die under pressure. The fiber bundles are forced to fill the cavity, thus obtaining an shape consistent with the cavity. To produce round mosquito repellent liquid cores, the extrusion die cavity must be round, allowing the fiber bundles to be extruded into cylindrical cores that meet specifications.

[0003] However, if the hot mandrel is naturally cooled or the cooling air is unevenly distributed after being extruded from the extrusion die, the cooling rate of different parts of the mandrel may vary greatly, which may cause deformation problems such as warping and shrinkage. In addition, the installation reference of the shaping die and the extrusion die is inconsistent, which may easily cause misalignment of the through hole. This will cause the hot mandrel to be squeezed or pulled when entering the shaping die from the extrusion die, resulting in cross-sectional deformation and surface depression, which will reduce the product qualification rate. Utility Model Content

[0004] The purpose of this invention is to provide a PET fiber mandrel extrusion mold structure to solve the above problems. The air outlet pipe is inclined and its height is higher than that of the shaping mold. Cold air can be accurately blown onto the surface of the hot mandrel that has just been extruded from the extrusion mold, accelerating heat dissipation. Combined with the cavity constraint of the shaping mold, the mandrel can be quickly solidified and shaped.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: a PET fiber core rod extrusion mold structure, including a thermoforming machine, on which an extrusion mold is fixedly installed, and a support mechanism is fixedly installed near the extrusion mold on the thermoforming machine. A fixing block is slidably installed on the support mechanism, and a cooling mechanism is installed on the fixing block. The cooling mechanism includes a clamping plate and a rod. A clamping plate is engaged between two fixing blocks, and a rod is fixedly connected to the bottom end of the clamping plate. The rod is fixedly connected to the fixing block by a nut. Several shaping molds are fixedly installed at equal intervals inside the clamping plate. A support frame is fixedly connected between two fixing blocks, and several air outlet pipes are fixedly installed at equal intervals on the support frame. An air inlet pipe is fixedly connected to the air outlet pipes.

[0006] Preferably, the air outlet pipe is located at one end of the support frame near the extrusion die, and the air outlet pipe is inclined, and the air inlet pipe is connected to the interior of several air outlet pipes.

[0007] Preferably, the fixing block has a slot, and a card plate is engaged in the slot, and the width of the card plate is equal to the width of the slot.

[0008] Preferably, several of the air outlet pipes are arranged in relation to the through holes provided in the extrusion mold and the shaping mold, and the height of the air outlet pipes is higher than the height of the extrusion mold and the shaping mold.

[0009] Preferably, the support mechanism includes long rods and stops, and the thermoforming machine has two sets of long rods symmetrically fixed about the extrusion die, with limit blocks and stops threaded onto the long rods.

[0010] Preferably, the limiting block is cylindrical, the stop block is hexagonal, and the fixing block abuts against the limiting block and the stop block.

[0011] Preferably, the fixing block and the long rod are slidably connected, and the support frame is located on the side wall of the fixing block away from the card plate.

[0012] Preferably, a material guiding mechanism is installed on the side of the thermoforming machine away from the extrusion die. The material guiding mechanism includes a base plate and material guiding rods. The base plate is fixedly connected to the side wall of the thermoforming machine, and a plurality of material guiding rods are rotatably installed at equal intervals inside the base plate.

[0013] Preferably, the material guiding mechanism further includes baffles, and baffles are fixedly installed on both sides of the bottom plate, and the bottom plate is inclined.

[0014] The beneficial effects of this utility model are as follows: the air inlet pipe provides a unified air source for all air outlet pipes, ensuring that the air volume and air pressure of each air outlet pipe are consistent, so that multiple mandrels are simultaneously subjected to uniform cooling air, avoiding differences in mandrel shrinkage caused by uneven cooling; the air outlet pipes are inclined and higher than the forming mold, so that the cold air can be accurately blown onto the surface of the hot mandrel that has just been extruded from the extrusion die, accelerating heat dissipation. Combined with the cavity constraint of the forming mold, the mandrel can be quickly solidified and shaped, reducing the risk of deformation caused by slow cooling; the rigid connection between the insert rod and the nut enhances the connection strength between the clamping plate and the fixing block, preventing the clamping plate from falling off due to vibration during equipment operation, ensuring the continuous and stable operation of the forming mold; the detachable nut connection facilitates quick disassembly of the clamping plate, thereby changing the forming mold of different specifications, improving the adaptability of the equipment to multi-variety production, and shortening the mold change time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the thermoforming machine and the long rod of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the thermoforming machine and the extrusion die of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the support frame and the air outlet pipe of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the card plate and the insertion rod of this utility model;

[0020] Figure 6 This is a schematic diagram of the connection structure between the support frame and the fixing block of this utility model.

[0021] In the diagram: 1. Thermoforming machine; 2. Material guiding mechanism; 201. Baffle; 202. Base plate; 203. Material guiding rod; 3. Extrusion die; 4. Support mechanism; 401. Long rod; 402. Limiting block; 403. Stop block; 5. Cooling mechanism; 501. Support frame; 502. Air inlet pipe; 503. Shaping die; 504. Air outlet pipe; 505. Clamping plate; 506. Inserting rod; 6. Fixing block; 7. Slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6As shown, the PET fiber mandrel extrusion die structure includes a thermoforming machine 1, on which an extrusion die 3 is fixedly mounted. The thermoforming machine 1 pressurizes and pushes thermoplastic PET fiber bundles into the extrusion die 3. Under the constraint of the die cavity of the extrusion die 3, the fiber bundles form a preset cross-sectional shape and are extruded from the through hole of the extrusion die 3 to become a pre-formed hot mandrel. A support mechanism 4 is fixedly mounted on the thermoforming machine 1 near the extrusion die 3. A fixing block 6 is slidably mounted on the support mechanism 4. A cooling mechanism 5 is mounted on the fixing block 6. The cooling mechanism 5 includes a clamping plate 505 and an insert rod 50. 6. A slot 7 is provided inside the fixing block 6. A locking plate 505 is engaged in the slot 7, and the width of the locking plate 505 is equal to the width of the slot 7. A locking plate 505 is engaged between two fixing blocks 6. A plug rod 506 is fixedly connected to the bottom end of the locking plate 505. The plug rod 506 is fixedly connected to the fixing block 6 by a nut. Loosen the nut of the plug rod 506, remove the locking plate 505 and the plug rod 506 from the fixing block 6, replace the locking plate 505 with the corresponding shaping mold 503, and re-engage and fix it to replace the new shaping mold 503; the locking plate 505 is equidistantly fixed inside the locking plate 505. The device is equipped with several shaping molds 503. A support frame 501 is fixedly connected between two fixed blocks 6. Several air outlet pipes 504 are fixedly installed at equal intervals on the support frame 501. Air inlet pipes 502 are fixedly connected to the air outlet pipes 504. The air outlet pipes 504 are located at the end of the support frame 501 near the extrusion mold 3 and are inclined. The air inlet pipes 502 are connected to the interior of the several air outlet pipes 504. Cooling air is introduced into the air inlet pipes 502 by a fan. The interior of the air inlet pipes 502 is connected to the several air outlet pipes 504, and the air outlet pipes 504 are fixed at an inclination. Within the support frame 501, each air outlet pipe 504 is aligned with the through holes of the extrusion die 3 and the shaping die 503, thereby allowing the cold air ejected from the air outlet pipe 504 to be precisely blown onto the surface of the mandrel discharged from the extrusion die 3, which can further accelerate the cooling and curing of the mandrel. Several air outlet pipes 504 are arranged in a corresponding manner with respect to the through holes provided in the extrusion die 3 and the shaping die 503. The height of the air outlet pipe 504 is higher than the height of the extrusion die 3 and the shaping die 503. The through holes of the extrusion die 3 and the shaping die 503 are precisely aligned to ensure that the shape of the mandrel is continuous from extrusion to shaping, avoiding distortion.

[0024] As a technical optimization of this utility model, the support mechanism 4 includes a long rod 401 and a stop block 403. The thermoforming machine 1 has two sets of long rods 401 symmetrically fixed about the extrusion die 3. The long rods 401 are threadedly connected to a limiting block 402 and a stop block 403. The limiting block 402 is cylindrical and the stop block 403 is hexagonal. The sliding fixing block 6 moves along the long rod 401. The position of the fixing block 6 is determined by rotating the limiting block 402 and the stop block 403, thereby changing the distance between the forming die 503 and the extrusion die 3. The fixing block 6 abuts against the limiting block 402 and the stop block 403. The fixing block 6 is slidably connected to the long rod 401. The support frame 501 is located on the side wall of the fixing block 6 away from the clamping plate 505.

[0025] As a technical optimization of this utility model, a material guiding mechanism 2 is installed on the side of the thermoforming machine 1 away from the extrusion die 3. The material guiding mechanism 2 includes a base plate 202 and a material guiding rod 203. The base plate 202 is fixedly connected to the side wall of the thermoforming machine 1. Several material guiding rods 203 are equidistantly and rotatably installed inside the base plate 202. Baffles 201 are fixedly installed on both sides of the base plate 202. The base plate 202 is inclined. The material guiding rods 203 roll and convey the fiber bundle, which can avoid scratching the surface of the fiber bundle. At the same time, in conjunction with the baffles 201, it can prevent the fiber bundle from falling and being lost during the conveying process.

[0026] In use, the loose PET fiber bundles are first softened to a plastic state by heating and then fed into the feeding system of the thermoforming machine 1. A guide rod 203 on the side of the thermoforming machine 1 transports the fiber bundles into the machine. The guide rod 203 is installed inside the base plate 202 and rolls to transport the fiber bundles, preventing scratches on the fiber surface. Simultaneously, a baffle 201 prevents the fiber bundles from falling and being lost during transport. The thermoforming machine 1 pressurizes and pushes the thermoplastic PET fiber bundles into the extrusion die 3. Under the constraint of the die cavity of the extrusion die 3, the fiber bundles form a preset cross-sectional shape and are extruded from the through-hole of the extrusion die 3, becoming a pre-formed hot mandrel. The through-holes of the extrusion die 3 and the shaping die 503 are precisely aligned to ensure the continuous shape of the mandrel from extrusion to shaping, avoiding distortion. The hot mandrel directly enters the shaping die 503 from the extrusion die 3, and the cavity of the shaping die 503 further constrains the shape of the mandrel. Simultaneously, a fan supplies air to the inlet pipe 502. Cooling air is introduced internally, and the air inlet duct 502 is connected to several air outlet ducts 504. The air outlet ducts 504 are fixed at an angle inside the support frame 501. Each air outlet duct 504 is aligned with the through holes of the extrusion die 3 and the shaping die 503, so that the cold air sprayed from the air outlet duct 504 can be accurately blown onto the surface of the mandrel discharged from the extrusion die 3, which can further accelerate the cooling and curing of the mandrel. Moreover, the air inlet duct 502 provides a uniform air source for all the air outlet ducts 504, and the cold air is evenly distributed to ensure the batch production of mandrels. The cooling conditions are consistent; if the cooling effect needs to be adjusted, the fixed block 6 can be slid and moved along the long rod 401, and the position of the fixed block 6 can be determined by rotating the limit block 402 and the stop block 403, thereby changing the distance between the shaping mold 503 and the extrusion mold 3; when it is necessary to produce mandrels of different specifications, loosen the nut of the insert rod 506, remove the clamping plate 505 and the insert rod 506 from the fixed block 6, replace the clamping plate 505 with the corresponding shaping mold 503, and re-clamp and fix it to replace the new shaping mold 503.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PET fiber core rod extrusion die structure, including a thermoforming machine (1), characterized in that: An extrusion die (3) is fixedly installed on the thermoforming machine (1). A support mechanism (4) is fixedly installed on the thermoforming machine (1) near the extrusion die (3). A fixing block (6) is slidably installed on the support mechanism (4). A cooling mechanism (5) is installed on the fixing block (6). The cooling mechanism (5) includes a clamping plate (505) and a plug rod (506). A clamping plate (505) is clamped between two fixing blocks (6). A plug rod (506) is fixedly connected to the bottom end of the clamping plate (505). The plug rod (506) is fixedly connected to the fixing block (6) by a nut. Several shaping dies (503) are fixedly installed at equal intervals inside the clamping plate (505). A support frame (501) is fixedly connected between two fixing blocks (6). Several air outlet pipes (504) are fixedly installed at equal intervals on the support frame (501). An air inlet pipe (502) is fixedly connected to the air outlet pipe (504).

2. The PET fiber core rod extrusion die structure according to claim 1, characterized in that: The air outlet pipe (504) is located at one end of the support frame (501) near the extrusion die (3), and the air outlet pipe (504) is inclined, and the air inlet pipe (502) is connected to the interior of several air outlet pipes (504).

3. The PET fiber core rod extrusion die structure according to claim 1, characterized in that: The fixing block (6) is provided with a slot (7), and a card plate (505) is engaged and installed in the slot (7), and the width of the card plate (505) is equal to the width of the slot (7).

4. The PET fiber core rod extrusion die structure according to claim 1, characterized in that: Several of the air outlet pipes (504) are arranged in relation to the through holes provided in the extrusion mold (3) and the shaping mold (503), and the height of the air outlet pipes (504) is higher than the height of the extrusion mold (3) and the shaping mold (503).

5. The PET fiber core rod extrusion die structure according to claim 1, characterized in that: The support mechanism (4) includes a long rod (401) and a stop block (403). The thermoforming machine (1) has two sets of long rods (401) symmetrically fixed about the extrusion die (3). The long rods (401) are threadedly connected to a limit block (402) and a stop block (403).

6. The PET fiber core rod extrusion die structure according to claim 5, characterized in that: The limiting block (402) is cylindrical, the stop block (403) is hexagonal, and the fixing block (6) abuts against the limiting block (402) and the stop block (403).

7. The PET fiber core rod extrusion die structure according to claim 5, characterized in that: The fixing block (6) is slidably connected to the long rod (401), and the support frame (501) is located on the side wall of the fixing block (6) away from the card plate (505).

8. The PET fiber core rod extrusion die structure according to claim 1, characterized in that: The thermoforming machine (1) is equipped with a material guiding mechanism (2) on the side away from the extrusion die (3). The material guiding mechanism (2) includes a base plate (202) and material guiding rods (203). The base plate (202) is fixedly connected to the side wall of the thermoforming machine (1). Several material guiding rods (203) are rotatably installed at equal intervals inside the base plate (202).

9. The PET fiber core rod extrusion die structure according to claim 8, characterized in that: The material guiding mechanism (2) also includes baffles (201), and baffles (201) are fixedly installed on both sides of the bottom plate (202), and the bottom plate (202) is inclined.

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