Double-helix extrusion die

Abstract

The utility model relates to the technical field of dies, in particular to a double-helix extrusion die which comprises an upper die and a bottom plate, a lower die is arranged at the bottom of the upper die, an outlet die is embedded in the front sides of the upper die and the lower die, vertical plates are fixedly connected to the two sides of the rear side of the top of the bottom plate, a base plate is fixedly connected to the tops of the vertical plates, and a barrel is fixedly connected to the top of the base plate. The rear sides of the upper die and the lower die are embedded in the front side of the cylinder, and the front sides of the two sides of the base plate are fixedly connected with vertical plates. Through the cooperation of the hydraulic rod, the U-shaped seat, the servo motor, the screw rod and the clamping assembly, the device has a maintenance auxiliary function, can be subjected to maintenance auxiliary treatment, and can be subjected to auxiliary bearing and clamping when a mold needs to be maintained or replaced; therefore, the situation that the mold falls and is broken due to improper manual operation can be avoided, meanwhile, safety accidents such as crashing injury can be avoided, and the workload of maintenance personnel can also be relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a double-screw extrusion mold. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. Therefore, when the product needs to be extruded, a double-screw extrusion mold will be used.

[0003] After searching, the patent number is CN205439190U, and the name is a utility model of an extruder head, including a head with a filter, a head cover with an extrusion hole and a foldable connecting rod. Through research and analysis, it is found that although the docking can be carried out very accurately during use, which greatly improves the work efficiency of the head installation, there are still the following shortcomings to a certain extent.

[0004] For example, in the process of using double-screw extrusion dies for product production, it is impossible to perform auxiliary maintenance when the mold needs to be repaired or replaced during use. In this way, when using double-screw extrusion dies for product production, the mold may be damaged or have some minor problems due to long-term use, and needs to be removed for inspection and repair. Therefore, if auxiliary maintenance cannot be performed when it needs to be repaired or replaced, the mold may be accidentally dropped due to its excessive weight during manual removal, causing the mold to be broken. At the same time, safety accidents may occur due to the accidental dropping of the mold. In order to solve the above technical problems, we have designed a double-screw extrusion die. Utility Model Content

[0005] The utility model aims to provide a twin-screw extrusion die, which has the advantages of auxiliary maintenance processing when the die needs maintenance and automatic lubrication processing, and solves the problem that the existing twin-screw extrusion die does not have auxiliary maintenance processing when the die needs maintenance and does not have automatic lubrication processing during use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-screw extrusion die, comprising an upper die and a bottom plate, a lower die is arranged at the bottom of the upper die, an outlet die is inlaid and installed on the front sides of the upper die and the lower die, both sides of the rear side of the top of the bottom plate are fixedly connected with vertical plates, the top of the vertical plates is fixedly connected with a base plate, the top of the base plate is fixedly connected with a cylinder, the rear sides of the upper die and the lower die are inlaid on the front side of the cylinder, the front sides of both sides of the base plate are fixedly connected with vertical plates, the top of the vertical plates is fixedly connected with an automatic lubrication mechanism, the front side of the top of the bottom plate is fixedly connected with a base, the two sides of the bottom of the base are fixedly connected with maintenance auxiliary mechanisms, the inner cavity of the cylinder is provided with a first screw rod and a second screw rod, and the right side of the top of the bottom plate is connected to a controller by bolts.

[0007] Preferably, the maintenance auxiliary mechanism includes a hydraulic rod, the top of the hydraulic rod is fixedly connected to the base, the output ends of the hydraulic rods all pass through the base and are fixedly connected to a U-shaped seat, the front side of the right side of the U-shaped seat is connected to a servo motor by bolts, the output end of the servo motor passes through the U-shaped seat and is fixedly connected to a screw, the left end of the screw is movably connected to the U-shaped seat by a bearing, the rear side of the opposite side of the U-shaped seat is fixedly connected to a sliding rod, the surface of the screw is threadedly connected to a movable block, the rear sides of both sides of the movable block are slidably connected to the sliding rod, the top of the movable block is fixedly connected to a clamping assembly, and the output end of the controller is unidirectionally electrically connected to the hydraulic rod, the clamping assembly and the servo motor respectively.

[0008] Preferably, the automatic lubrication mechanism includes a mounting plate, the bottom of the mounting plate is fixedly connected to the vertical plate, the top of the mounting plate is fixedly connected to a liquid tank, the left side of the top of the mounting plate is connected to a liquid pump by bolts, the front side of the mounting plate is fixedly connected to an extension plate, the front side of the top of the extension plate is fixedly connected to an adjusting assembly, the rear side of the adjusting assembly is fixedly connected to an injection pipe group, the liquid inlet end of the liquid pump is connected to the liquid tank, the liquid outlet end of the liquid pump is connected to a telescopic tube, the right end of the telescopic tube is connected to the injection pipe group, the top of the right side of the liquid tank is connected to a liquid replenishing tube, the front side of the top of the mounting plate is fixedly connected to a reinforcing plate, the front side of the bottom of the reinforcing plate is fixedly connected to the extension plate, and the output end of the controller is unidirectionally electrically connected to the adjusting assembly and the liquid pump respectively.

[0009] Preferably, both sides of the front side of the bottom of the base plate are fixedly connected with base feet, both sides of the front top and bottom of the cylinder are connected with limiting components through threads, the surface of the cylinder is fixedly connected with a heating component, and the output end of the controller is unidirectionally electrically connected to the heating component.

[0010] Preferably, the clamping assembly includes a long frame plate, the bottom of the long frame plate is fixedly connected to the movable block, the top of the long frame plate is fixedly connected to a square plate, the number of square plates is four, the opposite sides of the square plates are fixedly connected to a first electric rod, and the output ends of the first electric rods pass through the square plates and are fixedly connected to a clamping plate.

[0011] Preferably, the adjustment assembly includes a second electric rod, the bottom of the second electric rod is fixedly connected to the extension plate, the output end of the second electric rod passes through the extension plate and is fixedly connected to an L-shaped plate, the front side of the L-shaped plate is fixedly connected to a third electric rod, and the output end of the third electric rod passes through the L-shaped plate and is fixedly connected to the injection pipe group.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model has a maintenance auxiliary function through the cooperation of a hydraulic rod, a U-shaped seat, a servo motor, a screw and a clamping assembly, and can perform maintenance auxiliary processing on the device. It can assist in supporting and clamping the mold when it needs to be repaired or replaced, thereby avoiding the situation where the mold falls and is broken due to improper manual operation, and can also avoid the occurrence of safety accidents such as smashing, and can also reduce the workload of maintenance personnel.

[0014] 2. The utility model has an automatic lubrication function through the cooperation of the mounting plate, the liquid tank, the liquid pump, the adjustment component and the injection pipe group, and can automatically lubricate the device. The lubricant can be sprayed on the inner wall of the mold before or during use, thereby avoiding the phenomenon of product cracking caused by adhesion when the product is discharged from the mold after molding, and may also cause scratches on the surface of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the axonometric drawing of the structure of the utility model;

[0016] Figure 2 This is a rear axonometric view of the structure of the utility model;

[0017] Figure 3 It is a right-side sectional isometric view of the structure of the utility model;

[0018] Figure 4 This is a sectional isometric view of the automatic lubrication mechanism of the utility model;

[0019] Figure 5 This is a sectional isometric view of the maintenance auxiliary mechanism of the utility model.

[0020] In the figure: 1. upper mold; 2. lower mold; 3. outlet mold; 4. bottom plate; 5. vertical plate; 6. base plate; 7. cylinder; 8. vertical plate; 9. automatic lubrication mechanism; 10. base; 11. maintenance auxiliary mechanism; 12. first screw rod; 13. second screw rod; 14. controller; 15. hydraulic rod; 16. U-shaped seat; 17. servo motor; 18. screw rod; 19. clamping assembly; 20. mounting plate; 21. liquid tank; 22. liquid pump; 23. adjustment assembly; 24. injection pipe group. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 5The double-screw extrusion die comprises an upper die 1 and a bottom plate 4. A lower die 2 is arranged at the bottom of the upper die 1. An outlet die 3 is inlaid on the front sides of the upper die 1 and the lower die 2. Vertical plates 5 are fixedly connected to both sides of the rear side of the top of the bottom plate 4. A base plate 6 is fixedly connected to the top of the vertical plate 5. A cylinder 7 is fixedly connected to the top of the base plate 6. The rear sides of the upper die 1 and the lower die 2 are inlaid on the front side of the cylinder 7. Vertical plates 8 are fixedly connected to the front sides of both sides of the base plate 6. An automatic lubrication mechanism 9 is fixedly connected to the top of the vertical plates 8. A base 10 is fixedly connected to the front side of the top of the bottom plate 4. A maintenance auxiliary mechanism 11 is fixedly connected to both sides of the bottom of the base 10. A first screw rod 12 and a second screw rod 13 are arranged in the inner cavity of the cylinder 7. A controller 14 is connected to the right side of the top of the bottom plate 4 by bolts.

[0022] See also Figure 1 , Figure 2 and Figure 5 The maintenance auxiliary mechanism 11 includes a hydraulic rod 15, the top of the hydraulic rod 15 is fixedly connected to the base 10, the output ends of the hydraulic rod 15 all penetrate the base 10 and are fixedly connected to a U-shaped seat 16, the front side of the right side of the U-shaped seat 16 is connected to a servo motor 17 by bolts, the output end of the servo motor 17 penetrates the U-shaped seat 16 and is fixedly connected to a screw 18, the left end of the screw 18 is movably connected to the U-shaped seat 16 through a bearing, the rear side of the opposite side of the U-shaped seat 16 is fixedly connected to a sliding rod, the surface of the screw 18 is threadedly connected with a movable block, the rear sides of both sides of the movable block are slidably connected with the sliding rod, and the top of the movable block is fixedly connected with a clamping assembly 19, the output end of the controller 14 is unidirectionally electrically connected to the hydraulic rod 15, the clamping assembly 19 and the servo motor 17 respectively, and the sliding rod is provided to play an auxiliary role, so that the movable block can move laterally better.

[0023] See also Figure 1 , Figure 2 and Figure 4 The automatic lubrication mechanism 9 includes a mounting plate 20, the bottom of the mounting plate 20 is fixedly connected to the vertical plate 8, the top of the mounting plate 20 is fixedly connected to a liquid tank 21, the left side of the top of the mounting plate 20 is connected to a liquid pump 22 by bolts, the front side of the mounting plate 20 is fixedly connected to an extension plate, the front side of the top of the extension plate is fixedly connected to an adjusting component 23, the rear side of the adjusting component 23 is fixedly connected to a spray pipe group 24, the liquid inlet end of the liquid pump 22 is connected to the liquid tank 21, the liquid outlet end of the liquid pump 22 is connected to a telescopic tube, the right end of the telescopic tube is connected to the spray pipe group 24, the top of the right side of the liquid tank 21 is connected to a liquid replenishing tube, the front side of the top of the mounting plate 20 is fixedly connected to a reinforcing plate, the front side of the bottom of the reinforcing plate is fixedly connected to the extension plate, the output end of the controller 14 is unidirectionally electrically connected to the adjusting component 23 and the liquid pump 22 respectively, and the reinforcing plate is provided to play a reinforcing role, and the strength of the connection between the extension plate and the mounting plate 20 can be strengthened to make it more stable.

[0024] See also Figure 1 , Figure 2 and Figure 3 The two sides of the front bottom of the bottom plate 4 are fixedly connected with feet, the two sides of the front top and bottom of the cylinder 7 are connected with limit assemblies through threads, the surface of the cylinder 7 is fixedly connected with a heating assembly, and the output end of the controller 14 is electrically connected to the heating assembly in one direction. By setting the limit assembly, the fixation is strengthened, and the fixation of the mold can be strengthened to prevent it from loosening.

[0025] See also Figure 1 and Figure 5 The clamping assembly 19 includes a long frame plate, the bottom of the long frame plate is fixedly connected to the movable block, the top of the long frame plate is fixedly connected to a square plate, the number of square plates is four, the opposite sides of the square plates are fixedly connected to the first electric rod, the output ends of the first electric rods pass through the square plates and are fixedly connected to the clamping plates. By setting the clamping assembly 19, the clamping function is played, which is the key part of the maintenance auxiliary mechanism 11, so that the mold can be removed stably.

[0026] See also Figure 1 and Figure 4 The adjusting component 23 includes a second electric rod, the bottom of which is fixedly connected to the extension plate, the output end of the second electric rod passes through the extension plate and is fixedly connected to an L-shaped plate, the front side of the L-shaped plate is fixedly connected to a third electric rod, the output end of the third electric rod passes through the L-shaped plate and is fixedly connected to the injection pipe group 24. By setting the L-shaped plate, a series connection is played, and the various components of the adjusting component 23 can be connected in series, so that the adjusting component 23 can operate better.

[0027] When in use, move the device to the designated operation point and add an appropriate amount of special lubricating liquid to the liquid tank 21, turn on the power and check whether the debugging equipment has any faults, then fix the upper mold 1, the outlet mold 3 and the lower mold 2 together and embed them into the front side of the cylinder 7, and strengthen the fixation through four limit assemblies. Before use, it is necessary to start the liquid pump 22 and the adjustment assembly 23 through the controller 14. The adjustment assembly 23 operates to align the injection pipe group 24 with the mold outlet through the cooperation of its various components. The liquid pump 22 runs to extract special lubricating liquid from the inside of the liquid tank 21, and then reaches the injection pipe group 24 through the telescopic tube and sprays it to the mold inlet, thereby completing the automatic lubrication process. During the production process, the plastic fluid is heated by the heating assembly in the inner cavity of the cylinder 7, and flows into the mold and is shaped under the cooperation and extrusion of the first screw rod 12 and the second screw rod 13, and finally is discharged from the outlet and falls into the next cooling process. When the mold needs to be repaired or replaced, the hydraulic rod 15 and the servo are started through the controller 14. The motor 17 and the clamping assembly 19 can be replaced by placing a new mold or another molding mold on one side of the clamping assembly 19 first. The various components of the clamping assembly 19 cooperate to clamp the mold to prevent it from being scratched by being placed elsewhere. The hydraulic rod 15 runs and extends to push the remaining components of the maintenance auxiliary mechanism 11 upward. The servo motor 17 runs to align the empty side of the clamping assembly 19 with the original mold on the cylinder 7. It is necessary to remove the limit assembly and pull the mold to make the mold fit with the bottom of the clamping assembly 19. The original mold is clamped by the cooperation of the various components on the empty side of the clamping assembly 19. The servo motor 17 drives the screw 18 to cooperate with the movable block to move the mold to be installed to the front side of the cylinder 7, push the mold in and install the limit assembly, and then control the hydraulic rod 15 through the controller 14 to drive the mold to be repaired to move downward, and cooperate with the servo motor 17 to move it down to a suitable position, which is convenient for maintenance personnel to operate, thereby completing the maintenance auxiliary processing.

[0028] In summary: the double-screw extrusion die, through the cooperation of the hydraulic rod 15, the U-shaped seat 16, the servo motor 17, the screw 18, the clamping assembly 19, the mounting plate 20, the liquid tank 21, the liquid pump 22, the adjustment assembly 23 and the injection pipe group 24, solves the problem that the existing double-screw extrusion die does not have auxiliary maintenance processing when the die needs maintenance during use, and does not have automatic lubrication processing.

Claims

1. A twin-screw extrusion die, comprising an upper die (1) and a bottom plate (4), characterized in that: A lower mold (2) is arranged at the bottom of the upper mold (1), an outlet mold (3) is inlaid and installed on the front sides of the upper mold (1) and the lower mold (2), both sides of the rear side of the top of the bottom plate (4) are fixedly connected with vertical plates (5), the top of the vertical plates (5) is fixedly connected with a base plate (6), the top of the base plate (6) is fixedly connected with a cylinder (7), the rear sides of the upper mold (1) and the lower mold (2) are inlaid on the front side of the cylinder (7), the front sides of both sides of the base plate (6) are fixedly connected with vertical plates (8), the top of the vertical plates (8) is fixedly connected with an automatic lubrication mechanism (9), the front side of the top of the bottom plate (4) is fixedly connected with a base (10), the two sides of the bottom of the base (10) are fixedly connected with a maintenance auxiliary mechanism (11), the inner cavity of the cylinder (7) is provided with a first screw rod (12) and a second screw rod (13), and the right side of the top of the bottom plate (4) is connected with a controller (14) by bolts.

2. The twin-screw extrusion die according to claim 1, characterized in that: The maintenance auxiliary mechanism (11) comprises a hydraulic rod (15), the top of which is fixedly connected to the base (10), the output ends of which penetrate the base (10) and are fixedly connected to a U-shaped seat (16), the front side of the right side of the U-shaped seat (16) is connected to a servo motor (17) by bolts, the output end of the servo motor (17) penetrates the U-shaped seat (16) and is fixedly connected to a screw rod (18), the left end of the screw rod (18) is movably connected to the U-shaped seat (16) by a bearing, the rear side of the opposite side of the U-shaped seat (16) is fixedly connected to a sliding rod, the surface of the screw rod (18) is threadedly connected to a movable block, the rear sides of both sides of the movable block are slidably connected to the sliding rod, the top of the movable block is fixedly connected to a clamping assembly (19), and the output end of the controller (14) is unidirectionally electrically connected to the hydraulic rod (15), the clamping assembly (19) and the servo motor (17) respectively.

3. The twin-screw extrusion die according to claim 1, characterized in that: The automatic lubrication mechanism (9) comprises a mounting plate (20), the bottom of the mounting plate (20) is fixedly connected to the vertical plate (8), the top of the mounting plate (20) is fixedly connected to a liquid tank (21), the left side of the top of the mounting plate (20) is bolted to a liquid pump (22), the front side of the mounting plate (20) is fixedly connected to an extension plate, the front side of the top of the extension plate is fixedly connected to an adjustment assembly (23), and the rear side of the adjustment assembly (23) is fixedly connected to a spray pipe group ( 24), the liquid inlet end of the liquid pump (22) is connected to the liquid tank (21), the liquid outlet end of the liquid pump (22) is connected to a telescopic tube, the right end of the telescopic tube is connected to the injection tube group (24), the top of the right side of the liquid tank (21) is connected to a liquid replenishing tube, the front side of the top of the mounting plate (20) is fixedly connected to a reinforcing plate, the front side of the bottom of the reinforcing plate is fixedly connected to the extension plate, and the output end of the controller (14) is unidirectionally electrically connected to the regulating component (23) and the liquid pump (22) respectively.

4. The twin-screw extrusion die according to claim 1, characterized in that: Both sides of the front bottom of the bottom plate (4) are fixedly connected with feet, both sides of the front top and bottom of the cylinder (7) are connected with limit assemblies through threads, a heating assembly is fixedly connected to the surface of the cylinder (7), and the output end of the controller (14) is unidirectionally electrically connected to the heating assembly.

5. The twin-screw extrusion die according to claim 2, characterized in that: The clamping assembly (19) comprises a long frame plate, the bottom of the long frame plate is fixedly connected to the movable block, the top of the long frame plate is fixedly connected to a square plate, the number of the square plates is four, the opposite sides of the square plates are fixedly connected to a first electric rod, and the output ends of the first electric rods pass through the square plates and are fixedly connected to the clamping plates.

6. The twin-screw extrusion die according to claim 3, characterized in that: The adjustment assembly (23) comprises a second electric rod, the bottom of the second electric rod is fixedly connected to the extension plate, the output end of the second electric rod passes through the extension plate and is fixedly connected to the L-shaped plate, the front side of the L-shaped plate is fixedly connected to the third electric rod, and the output end of the third electric rod passes through the L-shaped plate and is fixedly connected to the injection pipe group (24).

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