Steel sleeve die head

Abstract

The utility model relates to the technical field of steel sleeve die heads, in particular to a steel sleeve die head which comprises a left die head. The die further comprises a right die head, connecting blocks, sealing grooves, sealing steel sleeves, telescopic floating steel sleeves and springs, the two connecting blocks are symmetrically arranged at the front end and the rear end of the right side of the left die head, the right die head is arranged at the position, corresponding to the left die head, of the right side of the connecting blocks, and the sealing grooves are formed in the centers of the sides, close to the connecting blocks, of the left die head and the right die head. The telescopic floating steel sleeve is pushed to move towards the right die head through the characteristics of the spring until the telescopic floating steel sleeve is tightly attached to the right die head, when the granulation screen plate moves up and down, the granulation screen plate can exert certain pressure on the spring, so that the spring is extruded, normal displacement of the granulation screen plate cannot be affected, and the granulation effect is good. And the telescopic floating steel sleeve can be attached to the right die head more tightly through the spring, and it is guaranteed that materials cannot leak from the die head in the filter screen replacing process.

Description

Technical Field

[0001] This utility model relates to the field of steel sleeve mold head technology, and in particular to a steel sleeve mold head. Background Technology

[0002] During the extrusion molding process of recycled plastics, the plastic melt produces decomposition residues after prolonged plasticization and heating. These residues, along with impurities in the raw materials, can cause flow channel blockage if they enter the molding head, resulting in defects in the plastic products. In severe cases, they can even affect the normal operation of the equipment. Therefore, a filter needs to be installed between the extrusion screw and the molding head.

[0003] Common steel sleeve die heads only include adhesive application components, which can filter impurities in materials by replacing the filter screen without stopping the machine. However, they lack leak-proof function and cannot guarantee that materials will not leak from the die head during the filter screen replacement process. It is easy for the die head to be not strong enough during the filter screen replacement process, resulting in poor sealing effect and material leakage from the die head, causing resource waste.

[0004] Therefore, to address the lack of leak-proof function in the aforementioned steel sleeve die head, a new type of steel sleeve die head can be designed. This design utilizes the characteristics of a spring to push the telescopic floating steel sleeve towards the right die head until the telescopic floating steel sleeve is tightly fitted to the right die head. When the granulation screen moves up and down, the granulation screen applies pressure to the spring, causing the spring to be compressed. This not only does not affect the normal displacement of the granulation screen but also allows the telescopic floating steel sleeve to fit more tightly with the right die head through the spring, ensuring that material does not leak from the die head during filter replacement. Utility Model Content

[0005] To overcome the common problem that steel sleeve molds lack leak-proof function and cannot guarantee that materials will not leak from the mold during filter replacement, the mold is prone to insufficient pressure resistance during filter replacement, resulting in poor sealing effect and material leakage from the mold, causing resource waste.

[0006] The technical solution of this utility model is as follows: a steel sleeve mold head, including a left mold head; it also includes a right mold head, a connecting block, a sealing groove, a sealing steel sleeve, a telescopic floating steel sleeve, and springs. Two connecting blocks are symmetrically arranged at the front and rear ends of the right side of the left mold head. The right mold head is arranged on the right side of the connecting blocks corresponding to the position of the left mold head. A sealing groove is opened in the center of the side of the left and right mold heads near the connecting blocks. A sealing steel sleeve and a telescopic floating steel sleeve are respectively arranged inside the two sealing grooves. Two springs are symmetrically arranged below the left and right ends of the telescopic floating steel sleeve near the left mold head.

[0007] Preferably, the telescopic floating steel sleeve is moved towards the right die head by the characteristics of the spring until the telescopic floating steel sleeve is tightly fitted with the right die head. When the granulation screen moves up and down, the granulation screen will apply a certain pressure to the spring, thereby compressing the spring. This not only does not affect the normal displacement of the granulation screen, but also allows the telescopic floating steel sleeve to fit more tightly with the right die head through the spring, ensuring that the material will not leak from the die head during the filter replacement process. This solves the problem of common steel sleeve dies that only include the glue coating component. They can filter impurities in the material by replacing the filter without stopping the machine, but they lack the function of preventing leakage. They cannot guarantee that the material will not leak from the die head during the filter replacement process. They are prone to problems such as insufficient pressure resistance of the die head during the filter replacement process, resulting in poor sealing effect and material leakage from the die head, causing resource waste.

[0008] Preferably, the left mold head is connected to the connecting block and the right mold head by bolts, and two support rods are symmetrically arranged at the front and rear ends of the top of the left and right mold heads near the connecting block.

[0009] Preferably, the right die head has a material extrusion inlet through the center of the right side, and the left die head has a material discharge outlet through the center of the left side.

[0010] Preferably, a support plate is provided at the top of the four support rods, and a hydraulic pump is provided at the center of the top of the support plate.

[0011] Preferably, the hydraulic pump has a hydraulic rod inside, and a connecting strip is provided at the bottom end of the hydraulic rod.

[0012] Preferably, the bottom of the connecting strip is connected to a granulation screen plate by bolts. The bottom end of the granulation screen plate is inserted between the left and right mold heads. Two circular filter screens are symmetrically arranged at the upper and lower ends of the granulation screen plate near the telescopic floating steel sleeve.

[0013] Preferably, the granulation screen plate has four floating grooves at equal intervals at the upper and lower ends of the side near the telescopic floating steel sleeve, corresponding to the position of the spring. The end of the spring near the granulation screen plate passes through the floating groove and fits into the granulation screen plate.

[0014] The beneficial effects of this utility model are:

[0015] 1. The spring's properties push the telescopic floating steel sleeve to move towards the right die head until it is tightly fitted. When the granulation screen moves up and down, it applies pressure to the spring, causing it to be compressed. This not only does not affect the normal displacement of the granulation screen but also allows the telescopic floating steel sleeve to fit more tightly against the right die head, ensuring that material does not leak from the die head during filter replacement. This addresses the common problem of steel sleeve dies that only include an adhesive coating assembly, allowing for filter replacement without stopping the machine, but lacking leak-proof functionality. They cannot guarantee that material will not leak from the die head during filter replacement, and the die head's pressure resistance may be insufficient during filter replacement, leading to poor sealing and material leakage, resulting in resource waste. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of a steel sleeve mold head according to this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the sealing assembly structure of a steel sleeve mold head according to this utility model.

[0018] Figure 3 The diagram shown is an exploded view of the right die head of a steel sleeve die head according to this utility model.

[0019] Figure 4 The diagram shown is a structural schematic of a steel sleeve mold head drive assembly according to this utility model;

[0020] Figure 5 The diagram shown is a structural schematic of a steel sleeve die head granulation screen plate according to this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Left die head; 2. Right die head; 3. Connecting block; 4. Sealing groove; 5. Sealing steel sleeve; 6. Telescopic floating steel sleeve; 7. Extrusion inlet; 8. Discharge outlet; 9. Support rod; 10. Support plate; 11. Hydraulic pump; 12. Hydraulic rod; 13. Connecting strip; 14. Granulation screen; 15. Circular filter screen; 16. Floating groove; 17. Spring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment: a steel sleeve die head, including a left die head 1; it also includes a right die head 2, a connecting block 3, a sealing groove 4, a sealing steel sleeve 5, a telescopic floating steel sleeve 6, and springs 17. Two connecting blocks 3 are symmetrically arranged at the front and rear ends of the right side of the left die head 1. The right die head 2 is arranged at the right side of the connecting block 3 corresponding to the position of the left die head 1. A sealing groove 4 is opened at the center of the side of the left die head 1 and the right die head 2 near the connecting block 3. The sealing steel sleeve 5 and the telescopic floating steel sleeve 6 are respectively arranged inside the two sealing grooves 4. Two springs 17 are symmetrically arranged below the left and right ends of the telescopic floating steel sleeve 6 near the left die head 1. The characteristics of the springs 17 push the telescopic floating steel sleeve 6 to move towards the right die head 2 until the telescopic floating steel sleeve 6 is in close contact with the right die head 2. When the granulation screen 14 moves up and down, it applies pressure to the spring 17, causing the spring 17 to be compressed. This not only does not affect the normal displacement of the granulation screen 14, but also allows the telescopic floating steel sleeve 6 to fit more tightly with the right die head 2 through the spring 17, ensuring that the material will not leak from the die head during the filter replacement process. This solves the problem of common steel sleeve dies that only include the glue application component, which can filter impurities in the material by replacing the filter without stopping the machine, but lacks the function of preventing leakage. They cannot guarantee that the material will not leak from the die head during the filter replacement process. It is easy for the die head to be not strong enough during the filter replacement process, resulting in poor sealing effect, which leads to material leakage from the die head and waste of resources.

[0024] Please see Figures 2-5 In this embodiment, the left die head 1 is connected to the connecting block 3 and the right die head 2 by bolts. Two support rods 9 are symmetrically arranged at the front and rear ends of the top of the left die head 1 and the right die head 2 near the connecting block 3. The right die head 2 has a material extrusion inlet 7 through the center of the right side, and the left die head 1 has a material discharge outlet 8 through the center of the left side. The top of the four support rods 9 is provided with a support plate 10. The top center of the support plate 10 is provided with a hydraulic pump 11. The hydraulic pump 11 is provided with a hydraulic rod 12 inside. The bottom end of the hydraulic rod 12 is provided with a connecting strip 13. The hydraulic pump 11 drives the hydraulic rod 12 to move up or down. The hydraulic rod 12 drives the granulation screen 14 to move up or down through the connecting strip 13 until the clean circular filter screen 15 on the granulation screen 14 is located between the left die head 1 and the right die head 2. Then the circular filter screen 15 with residual filter material can be cleaned, and the function of changing the screen without stopping the machine is completed.

[0025] Please see Figures 1-5In this embodiment, the bottom of the connecting strip 13 is bolted to a granulation screen 14. The bottom end of the granulation screen 14 is inserted between the left die head 1 and the right die head 2. Two circular filter screens 15 are symmetrically arranged at the upper and lower ends of the granulation screen 14 near the telescopic floating steel sleeve 6. Four floating grooves 16 are equally spaced at the upper and lower ends of the granulation screen 14 near the telescopic floating steel sleeve 6, corresponding to the position of the spring 17. The end of the spring 17 near the granulation screen 14 passes through the floating groove 16 and fits against the granulation screen 14. The characteristics of the spring 17 push the telescopic floating steel sleeve 6 to move towards the right die head 2 until the telescopic floating steel sleeve 6 moves towards the right die head 2. The floating steel sleeve 6 fits tightly against the right die head 2. When the granulation screen 14 moves up and down, it applies a certain pressure to the spring 17, causing the spring 17 to be compressed. This not only does not affect the normal displacement of the granulation screen 14, but also allows the spring 17 to make the telescopic floating steel sleeve 6 fit more tightly against the right die head 2, ensuring that the material will not leak from the die head during the filter replacement process. This achieves the leak-proof function and prevents the problem of insufficient pressure resistance of the die head during filter replacement, which could lead to poor sealing and material leakage from the die head, resulting in resource waste.

[0026] During operation, the hydraulic pump 11 drives the hydraulic rod 12 to move up or down. The hydraulic rod 12, through the connecting strip 13, drives the granulation screen 14 to move up or down until the clean circular filter screen 15 on the granulation screen 14 is located between the left die head 1 and the right die head 2. Then, the circular filter screen 15 with residual filter material can be cleaned. The characteristics of the spring 17 push the telescopic floating steel sleeve 6 to move towards the right die head 2 until the telescopic floating steel sleeve 6 is tightly fitted with the right die head 2. When the granulation screen 14 moves up and down, the granulation screen 14 will apply a certain pressure to the spring 17, thereby compressing the spring 17. This not only does not affect the normal displacement of the granulation screen 14, but also allows the telescopic floating steel sleeve 6 to fit more tightly with the right die head 2 through the spring 17, ensuring that the material will not leak from the die head during the filter replacement process, thus achieving the leak-proof function.

[0027] Through the above steps, the characteristics of spring 17 push the telescopic floating steel sleeve 6 to move towards the right die head 2 until the telescopic floating steel sleeve 6 and the right die head 2 are tightly fitted. When the granulation screen 14 moves up and down, the granulation screen 14 will apply a certain pressure to the spring 17, thereby compressing the spring 17. This not only does not affect the normal displacement of the granulation screen 14, but also allows the telescopic floating steel sleeve 6 to fit more tightly with the right die head 2 through the spring 17, ensuring that the material will not leak from the die head during the replacement of the filter screen. This solves the problem of common steel sleeve dies that only contain glue application components, which can filter impurities in the material by replacing the filter screen without stopping the machine, but lack leak-proof function. They cannot guarantee that the material will not leak from the die head during the replacement of the filter screen. It is easy for the die head to be not strong enough during the replacement of the filter screen, resulting in poor sealing effect, which leads to material leakage from the die head and waste of resources.

Claims

1. A steel die head, comprising a left die head (1); characterized in that: It also includes a right mold head (2), a connecting block (3), a sealing groove (4), a sealing steel sleeve (5), a telescopic floating steel sleeve (6), and a spring (17). Two connecting blocks (3) are symmetrically arranged at the front and rear ends of the right side of the left mold head (1). The right mold head (2) is arranged at the position of the left mold head (1) on the right side of the connecting block (3). A sealing groove (4) is opened in the center of the left mold head (1) and the right mold head (2) near the connecting block (3). The sealing steel sleeve (5) and the telescopic floating steel sleeve (6) are respectively arranged inside the two sealing grooves (4). Two springs (17) are symmetrically arranged at the bottom of the left and right ends of the telescopic floating steel sleeve (6) near the left mold head (1).

2. The steel sleeve die head according to claim 1, characterized in that: The left mold head (1) is connected to the connecting block (3) and the right mold head (2) by bolts. The front and rear ends of the top of the left mold head (1) and the right mold head (2) near the connecting block (3) are symmetrically provided with two support rods (9).

3. The steel sleeve die head according to claim 1, characterized in that: The right die head (2) has a material inlet (7) through the center of the right side, and the left die head (1) has a material outlet (8) through the center of the left side.

4. A steel sleeve die head according to claim 2, characterized in that: The top of the four support rods (9) is provided with a support plate (10), and a hydraulic pump (11) is provided at the center of the top of the support plate (10).

5. A steel sleeve die head according to claim 4, characterized in that: The hydraulic pump (11) is equipped with a hydraulic rod (12), and a connecting strip (13) is provided at the bottom end of the hydraulic rod (12).

6. A steel sleeve die head according to claim 5, characterized in that: The bottom of the connecting strip (13) is connected to the granulation screen plate (14) by bolts. The bottom end of the granulation screen plate (14) is inserted into the middle of the left die head (1) and the right die head (2). Two circular filter screens (15) are symmetrically arranged at the upper and lower ends of the granulation screen plate (14) near the telescopic floating steel sleeve (6).

7. A steel sleeve die head according to claim 6, characterized in that: The granulation screen (14) has four floating grooves (16) at equal intervals on the upper and lower ends of the side near the telescopic floating steel sleeve (6) corresponding to the position of the spring (17). The end of the spring (17) near the granulation screen (14) passes through the floating groove (16) and fits into the granulation screen (14).

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