CN111703000A

CN111703000A - Rotational molding die with built-in temperature control device

Info

Publication number: CN111703000A
Application number: CN202010576871.3A
Authority: CN
Inventors: 章立志
Original assignee: Zhejiang Usually Machinery Co ltd
Current assignee: Zhejiang Usually Machinery Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-09-25

Abstract

The invention discloses a rotational molding die with a built-in temperature control device, which comprises a base and a receiver, wherein the top of the base is fixedly connected with a support, a motor is fixedly arranged on the side wall of the support, the tail end of an output shaft of the motor is fixedly connected with a transmission frame, the cross section of the transmission frame is U-shaped, the tail ends of two sides of the transmission frame are fixedly connected with transmission shafts, the shaft body of each transmission shaft is fixedly connected with a fixed frame, the cross section of each fixed frame is rectangular, the center of each fixed frame is provided with a transmission hole matched with the corresponding transmission shaft, the fixed frame is fixedly connected with a die body, the top of the die body is provided with a top cover, the top cover is provided with a. The rotational molding die has the characteristics of reasonable structural design, high stability, capability of monitoring the internal temperature of the rotational molding die in real time, reduction of defective rate and the like.

Description

Rotational molding die with built-in temperature control device

Technical Field

The invention relates to the technical field of rotational molding dies, in particular to a rotational molding die with a built-in temperature control device.

Background

Rotational molding, rotary molding and the like, which is a thermoplastic hollow molding method, the method comprises the steps of firstly adding plastic raw materials into a mold, then continuously rotating the mold along two vertical shafts and heating the mold, gradually and uniformly coating and melting the plastic raw materials in the mold on the whole surface of a mold cavity under the action of gravity and heat energy, molding the plastic raw materials into a required shape, and then cooling and shaping the plastic raw materials to obtain a product.

In the production and processing process of rotational molding products, the temperature monitoring and control of rotational molding dies are one of the most important technical measures for ensuring the quality of finished products. In the prior art, in the rotational molding process, the rotational molding die keeps continuous rotation, the surface temperature of the rotational molding die can only be measured after the product is processed, but the internal temperature of the rotational molding die cannot be monitored in real time, so that the quality of finished products is reduced, the defective rate is increased, and the improvement is urgently needed.

Disclosure of Invention

The invention aims to overcome the defect that the rotational molding die in the prior art cannot monitor the internal temperature of the die in real time, and provides the rotational molding die with a built-in temperature control device. The rotational molding die with the built-in temperature control device has the characteristics of reasonable structural design, high stability, capability of monitoring the internal temperature of the rotational molding die in real time, reduction of defective rate and the like.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a built-in temperature control device's rotational moulding mould, includes base and receiver, the top fixedly connected with support of base, the lateral wall fixed mounting of support has the motor, the terminal fixedly connected with gear frame of output shaft of motor, the cross section of gear frame is the U font, the terminal fixedly connected with transmission shaft in its both sides, the axle body fixedly connected with mount of transmission shaft, the cross section of mount is the rectangle, its center offer with transmission shaft matched with transmission hole, just fixedly connected with mould body on the mount, the top cap is installed at the top of mould body, the inlet pipe has been seted up on the top cap, install the feed valve in the inlet pipe, the electric connection has the transmission line on the receiver, the other end electric connection of transmission line has the computer.

Preferably, the mold body comprises an outer shell, an inner mold is arranged inside the outer shell, a mold cavity is formed inside the inner mold, a plurality of positioning mechanisms are arranged between the inner mold and the outer shell, and a temperature control device is arranged in the mold body.

Preferably, the positioning mechanism comprises a positioning frame, the positioning frame is arc-shaped, a plurality of connecting rods are fixedly connected to the inner wall of the positioning frame, the other ends of the connecting rods are fixedly connected to the outer wall of the inner die, positioning rods are fixedly connected to the outer wall of the positioning frame, and the other ends of the positioning rods are fixedly connected to the inner wall of the shell.

Preferably, the number of the positioning frames is not less than three, and the positioning frames are annularly distributed by taking the die cavity as the center.

Preferably, the temperature control device comprises a transmitter and a temperature sensor, the temperature sensor is located between the outer shell and the inner die, the top of the temperature sensor is fixedly connected with a plurality of installation rods, the other end of each installation rod is fixedly connected to the inner wall of the outer shell, a heat conducting sheet is arranged on the temperature sensor and is attached to the outer wall of the inner die, the transmitter is fixedly installed on the outer wall of the outer shell, signal lines are electrically connected to two sides of the transmitter, and the other ends of the signal lines penetrate through the outer shell and are electrically connected to the temperature sensor.

Preferably, the top fixedly connected with bracing piece of base, the top fixedly connected with bracket of bracing piece, the bracket is the arc to hug closely in the bottom of mould body, just the inner wall surface evenly distributed of bracket has a plurality of hemisphere rubber piece.

Preferably, the equal fixedly connected with fixed plate of both ends shaft body of transmission shaft, fixedly connected with dead lever between fixed plate and the mount, just the lateral wall fixedly connected with gag lever post of fixed plate, the terminal fixedly connected with spacing ring of gag lever post, the spacing ring cover is established on the mould body.

Compared with the prior art, the invention has the beneficial effects that:

1. the plastic material can be guided into the die body through the feeding pipe, and the transmission frame can be driven to rotate together with the die body through the driving motor so as to carry out rotational molding processing;

2. the stability is high, the limit ring can be used for limiting the die body so as to improve the stability of the die body and prevent the die body from shaking during rotation;

3. the temperature control device can monitor the internal temperature of the die body in real time and display the internal temperature in time, so that the working temperature of the die body is ensured to be normal at any time, the quality of finished products is ensured, and the defective rate is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a mold body;

FIG. 3 is a cross-sectional view of the mount;

fig. 4 is a side view of the bracket.

Reference numbers in the figures: 1. a base; 2. a receiver; 3. a support; 4. a motor; 5. a transmission frame; 6. a drive shaft; 7. a fixed mount; 8. a drive bore; 9. a mold body; 10. a top cover; 11. a feed pipe; 12. a feed valve; 13. a transmission line; 14. a computer; 15. a housing; 16. an inner mold; 17. a mold cavity; 18. a positioning frame; 19. a connecting rod; 20. positioning a rod; 21. a transmitter; 22. a temperature sensor; 23. mounting a rod; 24. a heat conductive sheet; 25. a signal line; 26. a support bar; 27. a bracket; 28. a fixing plate; 29. fixing the rod; 30. a limiting rod; 31. a limit ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a rotational molding die with a built-in temperature control device comprises a base 1 and a receiver 2, wherein a support 3 is fixedly connected to the top of the base 1, a motor 4 is fixedly installed on the side wall of the support 3, a transmission frame 5 is fixedly connected to the tail end of an output shaft of the motor 4, the cross section of the transmission frame 5 is U-shaped, transmission shafts 6 are fixedly connected to the tail ends of two sides of the transmission frame, a fixing frame 7 is fixedly connected to the shaft body of the transmission shaft 6, the cross section of the fixing frame 7 is rectangular, a transmission hole 8 matched with the transmission shaft 6 is formed in the center of the fixing frame, a die body 9 is fixedly connected to the fixing frame 7, the transmission frame 5 and the die body 9 can be driven to rotate together through the driving motor 4 so as to carry out rotational molding processing, a support rod 26 is fixedly connected to the top of the base 1, a bracket 27 is fixedly connected to the top, and a plurality of hemispherical rubber blocks are uniformly distributed on the inner wall surface of the bracket 27, the rubber blocks have elasticity, and can generate elastic deformation when being extruded, thereby playing the effect of shock absorption and buffering, so as to avoid abrasion when the die body 9 rotates, the shaft bodies at the two ends of the transmission shaft 6 are fixedly connected with a fixed plate 28, a fixed rod 29 is fixedly connected between the fixed plate 28 and the fixed frame 7, the side wall of the fixed plate 28 is fixedly connected with a limit rod 30, the tail end of the limit rod 30 is fixedly connected with a limit ring 31, the limit ring 31 is sleeved on the die body 9, the die body 9 can be limited by the limit ring 31, so as to improve the stability of the die body 9, thereby preventing the die body 9 from shaking when rotating, the die body 9 comprises an outer shell 15, an inner die 16 is arranged inside the outer shell 15, a die cavity 17 is formed inside the inner die 16, and a plurality of positioning, the positioning mechanism comprises positioning frames 18, the number of the positioning frames 18 is not less than three, the positioning frames 18 are distributed in an annular shape by taking the die cavity 17 as the center, the positioning frames 18 are arc-shaped, the inner walls of the positioning frames are fixedly connected with a plurality of connecting rods 19, the other ends of the connecting rods 19 are fixedly connected with the outer wall of the inner die 16, the outer wall of the positioning frames 18 is fixedly connected with positioning rods 20, the other ends of the positioning rods 20 are fixedly connected with the inner wall of the shell 15, the inner die 16 can be positioned and reinforced through the positioning mechanism so as to avoid deformation in the rotational molding processing process, a temperature control device is arranged in the die body 9, the temperature control device comprises a transmitter 21 and a temperature sensor 22, the temperature sensor 22 is positioned between the shell 15 and the inner die 16, the tops of the temperature sensor 22 are fixedly connected with a plurality of mounting rods 23, the, the heat conducting sheet 24 is attached to the outer wall of the inner mold 16, can effectively absorb the temperature of the inner mold 16 and transmit the temperature to the temperature sensor 22, the emitter 21 is fixedly arranged on the outer wall of the outer shell 15, both sides of the temperature sensor are electrically connected with signal wires 25, the other end of the signal wire 25 penetrates through the shell 15 and is electrically connected with the temperature sensor 22, the temperature information received by the temperature sensor 22 can be transmitted to the transmitter 21 through the signal wire 25, the top cover 10 is installed on the top of the die body 9, the feeding pipe 11 is opened on the top cover 10, the feeding valve 12 is installed in the feeding pipe 11, the transmission line 13 is electrically connected on the receiver 2, the other end of the transmission line 13 is electrically connected with the computer 14, the receiver 2 can receive the wireless signal sent by the transmitter 21 and transmit the wireless signal to the computer 14 through the transmission line 13, so as to display the temperature inside the injection mold in real time, thereby ensuring that the working temperature of the mold body 9 is normal at any time.

The working principle is as follows: when the rotational molding device is used, firstly, the feed valve 12 is opened, plastic raw materials are introduced into the mold body 9 through the feed pipe 11, then the motor 4 is driven to drive the transmission frame 5 to rotate together with the mold body 9, when the plastic raw materials enter the mold cavity 17 of the mold body 9, rotational molding processing can be carried out along with the rotation of the mold body 9, and a rotational molding finished product can be obtained after the plastic raw materials are cooled and shaped; in the rotational molding process, the temperature of the inner mold 16 can be absorbed by the heat conducting sheet 24 and transmitted to the temperature sensor 22, then the temperature information received by the temperature sensor 22 can be transmitted to the transmitter 21 through the signal line 25, the transmitter 21 can send a wireless signal, the temperature information wireless signal sent by the transmitter 21 can be received by the receiver 2 at the moment and transmitted to the computer 14 through the transmission line 13, and therefore the temperature inside the injection mold can be displayed in real time through the display on the computer 14, so that the working temperature of the mold body 9 can be ensured to be normal at any time, the quality of finished products is ensured, and the defective rate is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a built-in temperature control device's rotational moulding mould, includes base (1) and receiver (2), its characterized in that: the top fixedly connected with support (3) of base (1), the lateral wall fixed mounting of support (3) has motor (4), the terminal fixedly connected with gear frame (5) of output shaft of motor (4), the cross section of gear frame (5) is the U font, its both sides terminal fixedly connected with transmission shaft (6), the axle body fixedly connected with mount (7) of transmission shaft (6), the cross section of mount (7) is the rectangle, its center sets up with transmission shaft (6) matched with drive hole (8), and fixedly connected with mould body (9) on mount (7), top cap (10) is installed at the top of mould body (9), inlet pipe (11) has been seted up on top cap (10), install feed valve (12) in inlet pipe (11), electric connection has transmission line (13) on receiver (2), the other end of the transmission line (13) is electrically connected with a computer (14).

2. The rotational molding die with a built-in temperature control device according to claim 1, wherein: the die comprises a die body (9) and is characterized in that the die body (9) comprises an outer shell (15), an inner die (16) is arranged inside the outer shell (15), a die cavity (17) is formed inside the inner die (16), a plurality of positioning mechanisms are arranged between the inner die (16) and the outer shell (15), and a temperature control device is arranged in the die body (9).

3. The rotational molding die with a built-in temperature control device according to claim 2, wherein: positioning mechanism includes locating rack (18), locating rack (18) are the arc, and a plurality of connecting rods (19) of its inner wall fixedly connected with, the other end fixed connection of connecting rod (19) is at the outer wall of centre form (16), the outer wall fixedly connected with locating lever (20) of locating rack (18), the other end fixed connection of locating lever (20) is at the inner wall of shell (15).

4. The rotational molding die with a built-in temperature control device according to claim 3, wherein: the number of the positioning frames (18) is not less than three, and the positioning frames (18) are annularly distributed by taking the die cavity (17) as the center.

5. The rotational molding die with a built-in temperature control device according to claim 2, wherein: the temperature control device comprises a transmitter (21) and a temperature sensor (22), wherein the temperature sensor (22) is positioned between an outer shell (15) and an inner die (16), a plurality of installation rods (23) are fixedly connected to the top of the temperature sensor, the other end of each installation rod (23) is fixedly connected to the inner wall of the outer shell (15), a heat conducting sheet (24) is arranged on the temperature sensor (22), the heat conducting sheet (24) is attached to the outer wall of the inner die (16), the transmitter (21) is fixedly installed on the outer wall of the outer shell (15), signal lines (25) are electrically connected to the two sides of the outer wall, and the other end of each signal line (25) penetrates through the outer shell (15) and is electrically connected to the temperature sensor (22).

6. The rotational molding die with a built-in temperature control device according to claim 1, wherein: the top fixedly connected with bracing piece (26) of base (1), the top fixedly connected with bracket (27) of bracing piece (26), bracket (27) are the arc to hug closely in the bottom of mould body (9), just the inner wall surface evenly distributed of bracket (27) has a plurality of hemisphere rubber piece.

7. The rotational molding die with a built-in temperature control device according to claim 1, wherein: the equal fixedly connected with fixed plate (28) of both ends shaft body of transmission shaft (6), fixedly connected with dead lever (29) between fixed plate (28) and mount (7), just lateral wall fixedly connected with gag lever post (30) of fixed plate (28), terminal fixedly connected with spacing ring (31) of gag lever post (30), spacing ring (31) cover is established on mould body (9).