CN211307314U - A die head of an extrusion die - Google Patents

Abstract

The utility model relates to an extrusion die's die head, including the lower mould, go up the mould and fix the regulating plate that is used for controlling ejection of compact height in last mould ejection of compact one side, upward be equipped with the die cavity between mould and the lower mould, be equipped with the chamber of extruding of intercommunication die cavity between regulating plate and the lower mould, the mounting groove has been seted up along its length direction to the regulating plate upper end, mounting groove intercommunication regulating plate one side lateral wall, the interval is equipped with two adjusting part in the mounting groove, wear to be equipped with the lead screw between two adjusting part, the lead screw both ends are rotated and are connected in the mounting groove inner wall, the lower mould both sides are all fixed and are equipped with the mounting panel, the lead screw both ends are rotated and are connected in the mounting panel of both sides, adjusting part establishes. The utility model discloses the in-process ejection of compact that has the regulation load is even effect still.

Description

A die head of an extrusion die

technical field

The utility model relates to the technical field of extrusion dies, in particular to a die head of an extrusion die.

Background technique

Extrusion die is a kind of forming die, but the way of discharging is realized by extrusion. In production and life, PVC board is usually processed by extrusion die. In the production process, the powder or granule is placed in a hot-melt equipment, and after melting, it is injected into an extrusion die, and pressure is applied. PVC sheet of desired size and shape.

Chinese Patent Publication No. CN208247405U discloses a die assembly of a wire drawing machine, including an upper die and a lower die, a cavity is arranged between the upper die and the lower die, and an adjustment block is integrally connected to the upper die, and the adjustment Between the block and the lower die is an extrusion gap communicating with the cavity, and one side of the regulating block is provided with an regulating mechanism for driving the regulating block to approach or away from the lower die. The adjustment mechanism adjusts the distance between the adjustment block and the lower die to achieve the effect of adjusting the extrusion gap, and can produce products of various thickness types.

The above-mentioned prior art scheme has the following defects: in the process of adjusting the extrusion gap, it is necessary to adjust each component of the adjustment mechanism one by one, because it is difficult to control the adjustment angle by manual adjustment, so it is difficult to ensure the adjustment of each position of the lower mold. On a flat plane, the difference in the extrusion gap at each position leads to uneven extrusion thickness of the material.

Utility model content

In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a die head of an extrusion die with uniform discharge.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions: a die head of an extrusion die, comprising a lower die, an upper die and a regulating plate fixed on the discharging side of the upper die to control the discharging height , a cavity is set between the upper die and the lower die, an extrusion cavity connecting the cavity is set between the regulating plate and the lower die, and a mounting groove is opened at the upper end of the regulating plate along its length direction, and the The installation groove communicates with one side wall of the adjustment plate, two adjustment components are arranged in the installation groove at intervals, and a screw rod passes through the two adjustment components, and the two ends of the screw rod are rotatably connected to the inner wall of the installation groove, Both sides of the lower die are fixed with mounting plates, the two ends of the screw rod are rotatably connected to the mounting plates on both sides, and the adjustment assembly includes an adjustment block sleeved on the screw rod and threadedly connected to the screw rod, and a rotating The adjusting rod is connected to the adjusting block, one end of the adjusting rod is connected to the lower end surface of the adjusting block, and the other end of the adjusting rod is connected to the adjusting plate in rotation.

Through the above technical solution, after the molten material enters the cavity, it is extruded from the extrusion cavity, and after cooling, it becomes a formed PVC board. When the thickness of the required PVC board is changed, when the screw is rotated, the adjusting block slides horizontally, and the adjusting rod rotates relative to the adjusting block. Since the length of the adjusting rod does not change, the angle changes to drive the adjusting plate to rotate. As a result, the size of the extrusion cavity changes, and the thickness of the material produced changes after the material output changes. When the screw rotates, the adjusting rods on both sides drive the adjusting plate to rotate synchronously, and the magnitude of the applied force is the same, so the deformation amount on both sides of the adjusting plate is basically the same, and the thickness of the discharged material is basically uniform.

In a preferred example of the present invention, the screw rod can be further configured as follows: the screw rod is a bidirectional screw rod, and the thread directions at both ends of the screw rod are opposite.

Through the above technical solution, when the two-way screw rotates, the adjustment blocks on both sides are driven to slide in the opposite direction. Compared with the adjustment blocks sliding in the same direction, the force exerted by the reverse sliding adjustment blocks on the screw is in the opposite direction, and most of them can be offset. . The adjustment blocks that slide in the same direction exert force on the screw rod in the same direction, and the mounting plates installed on both sides of the screw rod are subject to greater force and are easily damaged. The setting of the two-way screw improves the service life of the equipment.

In a preferred example of the present invention, it can be further configured as follows: the upper die is spaced with two sets of cleaning components for bringing the upper die away from the lower die. The cleaning components include a cleaning component for driving the upper die to move relative to the lower die. A pressure cylinder and a first guide rod arranged on both sides of the pressure cylinder to guide the upper die, the lower end of the first guide rod is fixedly connected to the lower die, the first guide rod is slidably connected to the upper die along the vertical direction, and the two A fixing plate is fixed on each of the first guide rods, the pressure cylinder is mounted on the fixing plate, and the piston rod at the end of the pressure cylinder passes through the fixing plate and is fixedly connected to the upper die.

Through the above technical solution, during the extrusion process, some molten materials in the cavity and the extrusion cavity will adhere to the inner wall of the cavity and the extrusion cavity, which will affect the processing of subsequent materials after agglomeration. After the pressure cylinder is activated, the piston rod drives the upper die upward, the first guide rod guides it, and the distance between the upper die and the lower die becomes larger, forming a state that is easy to clean. After cleaning, start the pressure cylinder, and the piston rod drives the upper die back to the initial position.

In a preferred example of the present invention, it can be further configured as follows: both sides of the lower mold are fixedly provided with mounting plates, the mounting plate abuts against the side wall of the upper mold and is fixedly provided with a limit protrusion, and the upper mold abuts against A limiting groove is formed on one side of the mounting plate along the vertical direction, each of the limiting protrusions is embedded in the limiting groove, and the limiting protrusion is slidably connected to the limiting groove along the vertical direction.

With the above technical solution, before cleaning, the upper die is lifted to a height that is convenient for cleaning, and during this process, the limiting protrusion slides in the limiting groove to form a guiding function for the upper die. After the cleaning is completed, the guide limit protrusions and limit grooves reduce the offset of the upper die, and the upper die and the lower die will not be misaligned when they are closed again, and will not cause the material to flow out and affect subsequent production.

In a preferred example of the present invention, the lower end surface of the adjusting plate can be further configured as follows: the lower end surface of the adjusting plate is inclined downward from the end close to the cavity to the end away from the cavity.

Through the above technical solution, the molten material is extruded from the cavity and then formed, and the size of the extrusion cavity is always smaller than the size of the cavity, because when the material is extruded, the temperature near the outer wall decreases, and the material is easy to agglomerate. . The size of the extrusion cavity is small, which can increase the flow rate of the material in the extrusion cavity, and try to avoid molding before it is discharged. The lower end face of the regulating plate is inclined downward from the end close to the cavity to the end away from the cavity, and the channel for extruding the molten material gradually decreases, which gradually increases the flow rate during extrusion and reduces the defects of material molding.

In a preferred example of the present invention, it can be further configured as follows: a second guide rod is arranged between the two adjustment blocks, the second guide rod is slidably connected to the adjustment block, and the two ends of the second guide rod are respectively fixedly connected to There are two mounting plates on both sides of the second guide rod, which are respectively arranged on both sides of the adjustment block.

Through the above technical solution, if there is no second guide rod, the adjustment block can be slid and not rotated by the adjustment rod, but the adjustment rod and the adjustment block are connected by rotation. Fatigue fracture. A second guide rod is inserted between the two adjustment blocks. During the rotation of the screw rod, the adjustment block slides horizontally under the guidance of the second guide rod, which improves the adjustment stability of the adjustment block and the service life of the equipment.

In a preferred example of the present invention, a force-applying ring can be fixed coaxially on one side of the screw rod after passing through the mounting plate, and a handle for easy force-applying is horizontally provided on the side of the force-applying ring away from the screw rod.

Through the above technical solution, the force application ring increases the force arm, which can reduce the force application and make the force application more convenient.

In a preferred example of the present invention, it can be further configured that: the surface of the handle is provided with anti-skid lines.

Through the above technical solutions, the anti-skid pattern increases the friction between the hand and the handle, making it more convenient to apply force to the handle, and improving the user experience.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. The setting of the two sets of adjustment components makes the force applied on both sides the same, so the deformation amount on both sides of the adjustment plate is basically the same, and the thickness of the discharge material is basically uniform.

2. The cleaning component drives the upper die to separate from the lower die. It is more convenient to clean the cavity and extrusion cavity in the open state, so as to avoid the influence of material quality.

Description of drawings

Fig. 1 is the axonometric view of the present embodiment;

2 is a schematic diagram of the present embodiment for embodying the internal structure;

Fig. 3 is the enlarged view of Fig. 2 at A;

FIG. 4 is a schematic diagram showing the connection structure of the cleaning assembly.

In the figure, 10, lower die; 11, upper die; 12, adjustment plate; 20, cavity; 21, extrusion cavity; 22, avoidance groove; 23, installation groove; 30, screw rod; 31, force ring; 32, Reinforcing rib; 33, handle; 34, anti-skid pattern; 40, adjustment assembly; 41, adjustment block; 42, adjustment rod; 43, first installation block; 44, installation rod; 45, second installation block; 46, second Guide rod; 50, cleaning assembly; 51, pressure cylinder; 52, first guide rod; 53, fixing plate; 60, mounting plate; 61, limit protrusion; 62, limit groove.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

1 and 2, it is a die head of an extrusion die disclosed by the utility model, including a lower die 10, an upper die 11 and an adjusting plate 12 fixed on the discharge side of the upper die 11 to control the discharge height , a cavity 20 is provided between the upper mold 11 and the lower mold 10 . An extrusion cavity 21 connected to the cavity 20 is provided between the regulating plate 12 and the lower die 10. The section of the cavity 20 is waist-shaped, and the lower end surface of the regulating plate 12 is inclined downward from the end close to the cavity 20 to the end far from the cavity 20. . One side of the adjusting plate 12 is provided with an escape groove 22 and an installation groove 23 in sequence from top to bottom, the escape groove 22 is connected to the side walls on both sides, and the installation groove 23 is provided with a screw rod 30 along its length direction, and the two sides of the screw rod 30 It is rotatably connected to the inner wall of the installation slot 23 . Both ends of the screw rod 30 are screwed with an adjustment component 40 for adjusting the size of the extrusion cavity 21 . Two sets of cleaning components 50 are arranged on the upper mold 11 at intervals for taking the upper mold 11 away from the lower mold 10 .

During the processing, the molten material enters the extrusion cavity 21 from the cavity 20, and is extruded from the small end of the extrusion cavity 21. After cooling, it is formed into a PVC board. When adjusting the molding thickness of the PVC board, the screw rod 30 is rotated to drive the adjusting assembly 40 to exert force on the adjusting plate 12 , so as to achieve the purpose of adjusting the size of the discharge port of the extrusion cavity 21 .

Specifically, referring to FIGS. 2 and 3 , the adjustment assembly 40 includes an adjustment block 41 sleeved on the screw rod 30 and threadedly connected to the screw rod 30 , and an adjustment rod 42 rotatably connected to the adjustment block 41 . The screw rod 30 is a bidirectional screw rod, and the screw threads at both ends of the screw rod 30 are in opposite directions. There are two adjustment rods 42, which are respectively connected to the upper and lower end surfaces of the adjustment block 41 in rotation. On the lower end face of the inner wall, the length of the adjustment rod 42 is greater than the vertical distance from the adjustment block 41 to the upper and lower ends of the inner wall of the installation groove 23 .

The upper and lower end surfaces of the adjustment block 41 are provided with two first installation blocks 43 arranged at intervals. Mounting rods 44 are provided in the thickness direction, and second mounting blocks 45 are provided at both ends of the adjusting rod 42 . The second mounting blocks 45 are embedded between the two first mounting blocks 43 and pass through the adjusting rod 42 at the same time. Two second guide rods 46 are fixedly penetrated in the installation groove 23 along its length direction, the two second guide rods 46 are respectively placed on both sides of the length direction of the screw rod 30, and the second guide rods 46 pass through the two adjustment blocks 41 , and the second guide rod 46 is slidably connected to the adjusting block 41 .

Referring to FIG. 1 , one side of the screw rod 30 is fixed with a force applying ring 31 after passing through the mounting plate 60 , the force applying ring 31 is coaxial with the screw rod 30 and has a larger size, and a reinforcing rib 32 is fixedly connected between the end of the screw rod 30 and the force applying ring 31 , a number of reinforcing ribs 32 are evenly arranged along its circumferential direction. A handle 33 for applying force is horizontally provided on the side of the force applying ring 31 away from the screw rod 30 , and a surface of the handle 33 is provided with anti-slip lines 34 .

When adjusting the clearance of the extrusion cavity 21, force is applied to the handle 33, the force ring 31 rotates to drive the screw rod 30 to rotate, when the screw rod 30 is rotated, the adjustment block 41 slides horizontally, the adjustment rod 42 rotates relative to the adjustment block 41, and the second guide on both sides Rod 46 guides it. Since the length of the adjusting rod 42 remains unchanged, the adjusting plate 12 is slightly rotated after the angle is changed. The gap between the adjustment plate 12 and the lower die 10 is changed to achieve the purpose of changing the size of the outlet of the extrusion cavity 21 . When the adjusting rod 42 at the upper end of the adjusting block 41 rotates, it drives the plate between the avoidance groove 22 and the installation groove 23 to rotate slightly, and the avoidance groove 22 avoids it.

Specifically, referring to FIG. 1 and FIG. 4 , there are two groups of cleaning assemblies 50 , which are respectively placed on both sides of the upper end of the upper mold 11 . The cleaning assembly 50 includes a pressure cylinder 51 for driving the upper mold 11 to move relative to the lower mold 10 and a first guide rod 52 for guiding the upper mold 11 . The pressure cylinder 51 is an electric cylinder. There are two first guide rods 52, both of which are slidably connected to the upper die 11 in the vertical direction. The lower end of the first guide rod 52 is fixedly connected to the lower die 10. Two adjacent first guide rods A fixing plate 53 is fixed on the 52 , the pressure cylinder 51 is fixedly installed on the fixing plate 53 , and the piston rod at the end of the pressure cylinder 51 passes through the fixing plate 53 and is fixedly connected to the upper die 11 .

Both sides of the lower mold 10 are fixedly provided with mounting plates 60 , the side wall of the mounting plate 60 abutting against the upper mold 11 is fixedly provided with a limit protrusion 61 , and the side of the upper mold 11 abutting the mounting plate 60 is provided with a limit in the vertical direction. Slot 62. The limiting groove 62 is T-shaped, each limiting protrusion 61 is embedded in the limiting groove 62 , and the limiting protrusion 61 is slidably connected to the limiting groove 62 along the vertical direction.

Before cleaning, the pressure cylinder 51 is activated, the piston rod drives the upper die 11 upward, and the first guide rod 52 guides it. The limiting protrusion 61 slides in the limiting groove 62 , and the distance between the upper die 11 and the lower die 10 becomes larger, which is convenient for cleaning. After cleaning, the pressure cylinder 51 is activated, and the piston rod drives the upper die 11 back to the position where the upper die 11 and the lower die 10 are in contact.

The implementation principle of this embodiment is as follows: during the processing, the molten material enters the extrusion cavity 21 from the cavity 20, is extruded from the small end of the extrusion cavity 21, and is formed into a PVC board after cooling. When adjusting the molding thickness of the PVC board, the screw rod 30 is rotated to drive the adjusting assembly 40 to exert force on the adjusting plate 12 , so as to achieve the purpose of adjusting the size of the discharge port of the extrusion cavity 21 .

When adjusting the clearance of the extrusion cavity 21, force is applied to the handle 33, the force ring 31 rotates to drive the screw rod 30 to rotate, when the screw rod 30 is rotated, the adjustment block 41 slides horizontally, the adjustment rod 42 rotates relative to the adjustment block 41, and the second guide on both sides Rod 46 guides it. Since the length of the adjusting rod 42 remains unchanged, the adjusting plate 12 is slightly rotated after the angle is changed. The gap between the adjustment plate 12 and the lower die 10 is changed to achieve the purpose of changing the size of the outlet of the extrusion cavity 21 .

Before cleaning, the pressure cylinder 51 is activated, the piston rod drives the upper die 11 upward, and the first guide rod 52 guides it. The limiting protrusion 61 slides in the limiting groove 62 , and the distance between the upper die 11 and the lower die 10 becomes larger, which is convenient for cleaning. After cleaning, the pressure cylinder 51 is activated, and the piston rod drives the upper die 11 back to the position where the upper die 11 and the lower die 10 are in contact.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides an extrusion die's die head, includes lower mould (10), goes up mould (11) and fixes regulating plate (12) that are used for controlling ejection of compact height in last mould (11) ejection of compact one side, go up and be equipped with die cavity (20) between mould (11) and lower mould (10), be equipped with extrusion chamber (21) of intercommunication die cavity (20) between regulating plate (12) and lower mould (10), its characterized in that: the upper end of the adjusting plate (12) is provided with a mounting groove (23) along the length direction, the mounting groove (23) is communicated with the side wall of one side of the adjusting plate (12), two adjusting components (40) are arranged in the mounting groove (23) at intervals, a screw rod (30) penetrates between the two adjusting components (40), two ends of the screw rod (30) are rotatably connected with the inner wall of the mounting groove (23), mounting plates (60) are fixedly arranged on two sides of the lower die (10), the two ends of the screw rod (30) are rotatably connected with the mounting plates (60) at the two sides, the adjusting component (40) comprises an adjusting block (41) which is sleeved on the screw rod (30) and is in threaded connection with the screw rod (30) and an adjusting rod (42) which is rotatably connected with the adjusting block (41), one end of the adjusting rod (42) is connected to the lower end face of the adjusting block (41), and the other end of the adjusting rod (42) is rotatably connected to the adjusting plate (12).

2. The die head of an extrusion die of claim 1, wherein: the screw rod (30) is a bidirectional screw rod (30), and the directions of threads at two ends of the screw rod (30) are opposite.

3. The die head of an extrusion die of claim 1, wherein: go up mould (11) and go up the interval and be equipped with two sets ofly and be used for taking away from clearance subassembly (50) of lower mould (10) with last mould (11), clearance subassembly (50) are including being used for driving pressure cylinder (51) of going up the relative lower mould (10) motion of mould (11) and setting up first guide arm (52) that are used for leading to go up mould (11) in pressure cylinder (51) both sides, first guide arm (52) lower extreme fixed connection is in lower mould (10), vertical direction sliding connection in last mould (11), two are followed in first guide arm (52) fixed being equipped with fixed plate (53) on first guide arm (52), install on fixed plate (53) pressure cylinder (51), fixed connection in last mould (11) behind fixed plate (53) is passed to the piston rod of pressure cylinder (51) tip.

4. The die head of an extrusion die of claim 1, wherein: lower mould (10) both sides all are fixed and are equipped with mounting panel (60), mould (11) one side lateral wall is fixed and is equipped with spacing arch (61) in mounting panel (60) butt, goes up mould (11) butt mounting panel (60) one side and has seted up spacing groove (62) along vertical direction, each spacing arch (61) are inlayed and are established in spacing groove (62), and vertical direction sliding connection in spacing groove (62) is followed to spacing arch (61).

5. The die head of an extrusion die of claim 1, wherein: the lower end face of the adjusting plate (12) is inclined downwards from one end close to the cavity (20) to one end far away from the cavity (20).

6. The die head of an extrusion die of claim 1, wherein: wear to be equipped with second guide arm (46) between two regulating block (41), second guide arm (46) sliding connection in regulating block (41), mounting panel (60) of second guide arm (46) both ends difference fixed connection in both sides, second guide arm (46) are equipped with two and set up respectively in regulating block (41) both sides.

7. The die head of an extrusion die of claim 1, wherein: one side of the screw rod (30) penetrates through the mounting plate (60) and then is coaxially and fixedly provided with a force application ring (31), and one side, far away from the screw rod (30), of the force application ring (31) is horizontally provided with a handle (33) convenient for force application.

8. The die head of an extrusion die of claim 7, wherein: the surface of the handle (33) is provided with anti-skid grains (34).

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