Follow-up self-adaptive plastic forming machine

Abstract

The utility model discloses a follow-up self-adaptive plastic forming machine which comprises a base, a support is fixedly installed on the rear side of the base, a speed reducer is fixedly installed at the upper end of the support, a direct current motor is fixedly installed on the right side of the speed reducer, and an extruder is fixedly installed on the front side of the speed reducer. An extruder is fixedly mounted at the upper end of the base, a storage bin is fixedly mounted at the upper end of the extruder, a rack is arranged on the outer side of the extruder, a PLC is fixedly mounted at the upper end of the base, and a direct current driver is fixedly mounted at the upper end of the base. According to the follow-up type self-adaptive plastic forming machine, the mold core, the piston rod and the hydraulic cylinder are used in cooperation, when the hydraulic cylinder drives the piston rod and the mold core to vertically adjust the wall thickness of the mold core and the discharging opening, a rod sleeve and a supporting plate on the piston rod move vertically along with the piston rod, and therefore a pull wire is driven to move; the displacement sensor can monitor the movement distance of the piston rod, and displacement changes of the piston rod adjusting mold core are conveniently and accurately collected.

Description

Technical Field

[0001] This utility model relates to the field of blow molding technology, specifically a follow-up adaptive plastic molding machine. Background Technology

[0002] Plastic molding machines are devices used for the production of plastic products. Common plastic production methods include blow molding, rotational molding, and vacuum forming. Blow molding, also known as hollow blow molding, is a plastic processing method in which a tubular plastic preform obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while hot or heated to a softened state. After the mold is closed, compressed air is immediately introduced into the preform, causing the plastic preform to inflate and adhere tightly to the inner wall of the mold. After cooling and demolding, various hollow plastic products are obtained.

[0003] Existing plastic molding machines often need to produce products with different wall thicknesses. Therefore, a preform wall thickness control mechanism is set on the die head of the blow molding machine to adjust the preform wall thickness at any time. However, when the preform wall thickness is changed, the extrusion speed of the extruder screw cannot be changed in time, which leads to unstable laminar flow of plastic in the gap between the die head and the die core, affecting the color quality of the extruded product and reducing the yield rate. Therefore, it is necessary to propose a follow-up adaptive plastic molding machine. Utility Model Content

[0004] The purpose of this invention is to provide a follow-up adaptive plastic molding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a follow-up adaptive plastic molding machine, comprising a base, a bracket fixedly installed on the rear side of the base, a reducer fixedly installed on the upper end of the bracket, a DC motor fixedly installed on the right side of the reducer, an extruder fixedly installed on the front side of the reducer, a storage bin fixedly installed on the upper end of the extruder, a frame provided on the outer side of the extruder, a PLC controller fixedly installed on the upper end of the base, a DC driver fixedly installed on the upper end of the base, a die head fixedly installed on the front side of the extruder, a discharge port provided on the lower end of the die head, a die core provided inside the die head, a piston rod fixedly installed on the upper end of the die core, a fixed platform provided on the upper end of the die head, a hydraulic cylinder fixedly installed on the upper end of the fixed platform, a rod sleeve fixedly installed on the outer side of the piston rod, a support plate fixedly installed on the outer side of the rod sleeve, a displacement sensor fixedly installed on the rear side of the fixed platform, a pull wire provided on the lower end of the displacement sensor, and a wire end holder fixedly installed on the lower end of the pull wire.

[0006] Preferably, the storage silo is connected to the interior of the extruder, and the storage silo is funnel-shaped.

[0007] Preferably, the frame is fixedly installed on the upper end of the base, and the frame is adapted to the extruder.

[0008] Preferably, the piston rod passes through the fixed platform and is connected to the hydraulic cylinder, and the piston rod is located between the mold core and the hydraulic cylinder.

[0009] Preferably, the sleeve is adapted to the piston rod, and the support plate is fixedly installed on the outside of the sleeve and extends rearward to the outside of the fixed platform.

[0010] Preferably, the wire end holder is fixedly installed on the upper end of the support plate, and the pull wire is located between the displacement sensor and the wire end holder.

[0011] Preferably, the piston rod and the mold core are both located on the same vertical line, and the pull line and the support plate are perpendicular to each other.

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

[0013] 1. This follow-up adaptive plastic molding machine uses the combined use of a mold core, piston rod, and hydraulic cylinder. When the hydraulic cylinder drives the piston rod and mold core to adjust the wall thickness of the mold core and the discharge port, the sleeve and support plate on the piston rod also move up and down with the piston rod, thereby driving the pull wire to move. This allows the displacement sensor to monitor the distance the piston rod moves, making it easy to accurately collect the displacement changes of the piston rod adjusting the mold core.

[0014] 2. This adaptive plastic molding machine, through the configuration of a DC motor, displacement sensor, PLC controller, and DC driver, can transmit the displacement signal to the analog module of the PLC controller when the displacement sensor detects a change in piston rod displacement. This controls the speed of the DC motor driven by the DC driver, enabling adaptive control of the extruder's extrusion speed based on the displacement changes of the displacement sensor. Consequently, the change in wall thickness gap size is matched with the extrusion speed, balancing the discharge speed and improving the quality of the preform. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the present invention.

[0018] Figure 4 This is a partially enlarged structural schematic diagram of the present invention.

[0019] The components include: 1. Base; 2. Bracket; 3. Reducer; 4. DC motor; 5. Extruder; 6. Storage hopper; 7. Frame; 8. PLC controller; 9. DC driver; 10. Die head; 11. Discharge port; 12. Die core; 13. Piston rod; 14. Fixed platform; 15. Hydraulic cylinder; 16. Rod sleeve; 17. Support plate; 18. Displacement sensor; 19. Pull wire; 20. Wire end holder. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a follow-up adaptive plastic molding machine, including a base 1, a bracket 2 fixedly installed on the rear side of the base 1, a reducer 3 fixedly installed on the upper end of the bracket 2, a DC motor 4 fixedly installed on the right side of the reducer 3, an extruder 5 fixedly installed on the front side of the reducer 3, a storage bin 6 fixedly installed on the upper end of the extruder 5, a frame 7 arranged on the outer side of the extruder 5, a PLC controller 8 fixedly installed on the upper end of the base 1, a DC driver 9 fixedly installed on the upper end of the base 1, a die head 10 fixedly installed on the front side of the extruder 5, a discharge port 11 provided at the lower end of the die head 10, a die core 12 provided inside the die head 10, a piston rod 13 fixedly installed on the upper end of the die core 12, a fixed platform 14 provided on the upper end of the die head 10, and a hydraulic cylinder fixedly installed on the upper end of the fixed platform 14. 15. A rod sleeve 16 is fixedly installed on the outer side of the piston rod 13, and a support plate 17 is fixedly installed on the outer side of the rod sleeve 16. A displacement sensor 18 is fixedly installed on the rear side of the fixed platform 14. A pull wire 19 is provided at the lower end of the displacement sensor 18, and a wire end holder 20 is fixedly installed at the lower end of the pull wire 19. Through the arrangement of the DC motor 4, the displacement sensor 18, the PLC controller 8 and the DC driver 9, when the displacement sensor 18 detects the displacement change of the piston rod 13, it can transmit the displacement signal to the analog module of the PLC controller 8 to control the DC driver 9 to drive the speed of the DC motor 4. This allows the extrusion speed of the extruder 5 to be adaptively controlled according to the displacement change of the displacement sensor 18, so that the change in the wall thickness gap is matched with the extrusion speed, the discharge speed is balanced, and the quality of the parison is improved.

[0022] Please see Figure 2-4In this embodiment, the storage silo 6 is internally connected to the extruder 5. The storage silo 6 is funnel-shaped. The frame 7 is fixedly installed on the upper end of the base 1. The frame 7 is adapted to the extruder 5. The piston rod 13 passes through the fixed platform 14 and is connected to the hydraulic cylinder 15. The piston rod 13 is located between the die core 12 and the hydraulic cylinder 15. The hydraulic cylinder 15 can drive the piston rod 13 and the die core 12 to adjust the wall thickness of the die core 12 and the discharge port 11. The rod sleeve 16 is adapted to the piston rod 13. The support plate 17 is fixedly installed on the outside of the rod sleeve 16 and extends backward. Outside the fixed platform 14, the sleeve 16 and support plate 17 on the piston rod 13 also move up and down with the piston rod 13, thereby driving the pull wire 19 to move. The wire end seat 20 is fixedly installed on the upper end of the support plate 17. The pull wire 19 is located between the displacement sensor 18 and the wire end seat 20. The displacement sensor 18 can monitor the distance of the piston rod 13's movement, which is convenient for accurately collecting the displacement changes of the piston rod 13 adjusting the mold core 12. The piston rod 13 and the mold core 12 are both located on the same vertical line, and the pull wire 19 and the support plate 17 are perpendicular to each other.

[0023] Working principle: Through the coordinated use of the mold core 12, piston rod 13 and hydraulic cylinder 15, when the hydraulic cylinder 15 drives the piston rod 13 and mold core 12 to adjust the wall thickness of the mold core 12 and the discharge port 11, the rod sleeve 16 and support plate 17 on the piston rod 13 also move up and down with the piston rod 13, thereby driving the pull wire 19 to move. This allows the displacement sensor 18 to monitor the distance of the piston rod 13's movement, making it easy to accurately collect the displacement changes of the piston rod 13 in adjusting the mold core 12. Then, through the setting of DC motor 4, displacement sensor 18, PLC controller 8 and DC driver 9, when the displacement sensor 18 detects the displacement change of the piston rod 13, it transmits the displacement signal to the analog module of PLC controller 8 to control the DC driver 9 to drive the speed of DC motor 4. This allows the extrusion speed of extruder 5 to be adaptively controlled according to the displacement change of displacement sensor 18, so that the change in wall thickness gap is matched with the extrusion speed, balancing the discharge speed and improving the quality of the parison.

[0024] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A servo-adaptive plastic forming machine comprising a base (1), characterized in that: The rear side of the base (1) is fixedly installed with a support (2), the upper end of the support (2) is fixedly installed with a speed reducer (3), the right side of the speed reducer (3) is fixedly installed with a DC motor (4), the front side of the speed reducer (3) is fixedly installed with an extruder (5), the upper end of the extruder (5) is fixedly installed with a storage bin (6), the outer side of the extruder (5) is provided with a rack (7), the upper end of the base (1) is fixedly installed with a PLC controller (8), the upper end of the base (1) is fixedly installed with a DC driver (9), the front side of the extruder (5) is fixedly installed with a die head (10), the lower end of the die head (10) is provided with a discharge port (11), the inside of the die head (10) is provided with a die core (12), the upper end of the die core (12) is fixedly installed with a piston rod (13), the upper end of the die head (10) is provided with a fixed table (14), the upper end of the fixed table (14) is fixedly installed with a hydraulic cylinder (15), the outer side of the piston rod (13) is fixedly installed with a rod sleeve (16), the outer side of the rod sleeve (16) is fixedly installed with a support plate (17), the rear side of the fixed table (14) is fixedly installed with a displacement sensor (18), the lower end of the displacement sensor (18) is provided with a pull wire (19), the lower end of the pull wire (19) is fixedly installed with a wire head seat (20).

2. A servo adaptive plastic forming machine according to claim 1, characterized in that: The storage bin (6) is communicated with the inside of the extruder (5), and the storage bin (6) is funnel-shaped as a whole.

3. A servo adaptive plastic forming machine as claimed in claim 1, wherein: The rack (7) is fixedly installed on the upper end of the base (1), and the rack (7) is matched with the extruder (5).

4. A servo-adaptive plastic forming machine according to claim 1, characterized in that: The piston rod (13) is connected with the hydraulic cylinder (15) through the fixed table (14), and the piston rod (13) is located between the die core (12) and the hydraulic cylinder (15).

5. A servo-adaptive plastic forming machine according to claim 1, characterized in that: The rod sleeve (16) is matched with the piston rod (13), and the support plate (17) is fixedly installed on the outer side of the rod sleeve (16) and extends backward to the outside of the fixed table (14).

6. A servo-adaptive plastic forming machine according to claim 1, characterized in that: The wire head seat (20) is fixedly installed on the upper end of the support plate (17), and the pull wire (19) is located between the displacement sensor (18) and the wire head seat (20).

7. A servo-adaptive plastic forming machine according to claim 1, characterized in that: The piston rod (13) and the die core (12) are located on the same vertical line, and the pull wire (19) and the support plate (17) are perpendicular to each other.

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