CN113858522A

CN113858522A - Hot pressing plate for hot press with uniform heating

Info

Publication number: CN113858522A
Application number: CN202111122467.XA
Authority: CN
Inventors: 王强; 张峰; 王杰; 张晓亮
Original assignee: Nantong University
Current assignee: Nantong University
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2021-12-31

Abstract

The invention relates to a hot pressing plate for a hot press, which is uniformly heated, and comprises: the hot pressboard body, set up in a plurality of heating plates of hot pressboard body inside at intervals, it is still including dividing a plurality of air intakes and a plurality of air outlets of locating hot pressboard body upper and lower surface to and locate the inside circulation air flue and the return airway that constitute the wind circulation return circuit of hot pressboard body, the air intake below is provided with the gas mixing chamber, return airway connects gas mixing chamber and circulation air flue respectively for partly introduce the gas mixing chamber with the gas in the circulation air flue and carry out the secondary heating. The invention realizes the uniform heating of the hot pressing plate, improves the heat utilization rate, shortens the heating time, improves the working efficiency and reduces the energy loss.

Description

Hot pressing plate for hot press with uniform heating

Technical Field

The invention relates to a hot pressing plate for a hot press, which can realize uniform heating, and belongs to the technical field of hot presses.

Background

The hot pressing plate plays a crucial role in the hot pressing process of plate bodies or rubber products by adopting the flat pressing type continuous press, the hot pressing plate transfers uniform heat and proper pressure to the products, and particularly the uniform degree of the transferred heat directly influences the quality of the products at the central position of the hot pressing plate.

The flowing trend of the heating medium in the existing hot pressing plate in the hot pressing plate causes the circuit in the hot pressing plate to be complex, the heat in the middle part is too concentrated, and the uniform temperature cannot be reached. Generally, the hot press controller mostly adopts a classical PID controller, and due to the trouble of complicated parameter setting methods, the classical PID controller has the problems of poor parameter setting, poor performance, poor adaptability to the operation condition and overlong PID control parameter adjusting time.

Disclosure of Invention

The invention overcomes the defects in the background technology and provides the hot pressing plate for the hot press, which is uniform in heating, has a smart structure and can realize uniform heating.

The technical scheme adopted by the invention for solving the technical problems is as follows: a hot press plate for a hot press, which heats uniformly, comprising: hot pressboard body, interval ground set up in a plurality of heating plates of hot pressboard body inside, its characterized in that: the hot pressboard is characterized by further comprising a plurality of air inlets and a plurality of air outlets which are respectively arranged on the upper surface and the lower surface of the hot pressboard body, and a circulating air passage and an air return passage which are arranged inside the hot pressboard body and form an air circulating loop, wherein a gas mixing chamber is arranged below the air inlets, and the air return passage is respectively connected with the gas mixing chamber and the circulating air passage and is used for partially introducing gas in the circulating air passage into the gas mixing chamber for secondary heating.

Furthermore, a baffle plate for preventing the gas entering the air inlet from flowing into the air return channel is arranged at the joint of the gas mixing chamber and the air return channel.

Furthermore, circulation air flue includes that the branch locates the first air flue and the second air flue of the horizontal setting of heating plate top and below, first air flue and second air flue are at terminal intercommunication. The first air passage and the second air passage are communicated through a vertical third air passage arranged at the tail end.

Furthermore, the air return duct comprises a fourth air duct, a fifth air duct and a sixth air duct which are connected in sequence, the fourth air duct is connected with the lower end of the second air duct, and the sixth air duct is connected with the gas mixing chamber.

The invention has the beneficial effects that: the hot pressboard body bottom sets up a plurality of air outlets, and the effectual temperature of having avoided the hot pressboard body is too concentrated and is leaded to overheated problem for the bulk temperature of hot pressboard body is even. A wind circulation loop and a gas mixing chamber are arranged in the hot pressing plate body, so that the circulation loop is greatly optimized. And a part of heated air flows back to the gas mixing chamber to be mixed with air at the air inlet, so that the heat utilization rate is improved.

Drawings

FIG. 1 is a cross-sectional view of a hot press platen for a hot press of the present invention heated uniformly.

Fig. 2 is a schematic view of the housing of the hot press plate for a hot press of the present invention heated uniformly.

FIG. 3 is a top view of the gas mixing chamber of the hot press platen for a hot press of the present invention heated uniformly.

Fig. 4 is a top schematic view of a hot press platen for a hot press of the present invention heated uniformly.

Fig. 5 is a bottom schematic view of a hot press platen for a hot press of the present invention heated uniformly.

The numbers in the figures are as follows:

1-hot pressboard body, 21-first air passage, 22-second air passage, 23-third air passage, 31-fourth air passage, 32-fifth air passage, 33-sixth air passage, 8-first gas mixing chamber, 81-baffle, 9-first air inlet, 10-second air inlet, 11-third air inlet, 12-second gas mixing chamber, 13-third gas mixing chamber, 14-first heating plate, 15-second heating plate, 16-third heating plate, 17-shell, 171-flip cover, 18-temperature sensor, 19-auxiliary heating plate and 20 air outlet.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it is to be understood that the terms "left side", "right side", "upper part", "lower part", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

As shown in fig. 1 to 5, the hot press plate for a hot press of the present embodiment, which heats uniformly, includes: a hot-pressing board body 1 in a rectangular parallelepiped shape; the first heating plate 14, the second heating plate 15 and the third heating plate 16 are arranged in the hot pressing plate body 1 at intervals and have a strip-shaped structure; the square first air inlet 9, the square second air inlet 10 and the square third air inlet 11 are arranged on the upper surface of the hot pressing plate body 1; the air outlets 20 are arranged on the lower surface of the hot pressing plate body 1 and are square, and the circulating air passages are arranged inside the hot pressing plate body 1 and form an air circulating loop. The first air inlet 9, the second air inlet 10 and the third air inlet 11 are respectively located above the first heating sheet 14, the second heating sheet 15 and the third heating sheet 16 and are in one-to-one correspondence.

As shown in fig. 1, the circulating air passage includes a horizontally arranged first air passage 21 disposed above the three heating sheets, and a horizontally arranged second air passage 22 disposed below the three heating sheets, and the first air passage 21 and the second air passage 22 are communicated at the ends. Specifically, the first air passage 21 and the second air passage 22 communicate with each other through a vertical third air passage 23 provided at the distal end.

In this embodiment, a first gas mixing chamber 8, a second gas mixing chamber 12 and a third gas mixing chamber 13 are respectively disposed below the first air inlet 9, the second air inlet 10 and the third air inlet 11. The hot pressboard body 1 is also internally provided with an air return duct, and the air return duct comprises a fourth air duct 31, a fifth air duct 32 and a sixth air duct 33 which are sequentially connected. The fourth air passage 31 and the fifth air passage 32 form an L-shaped air passage when viewed in cross section, the fourth air passage 31 is connected with the lower end of the second air passage 22 for partially introducing the air of the second air passage 22 into the return air passage, and the sixth air passage 33 is connected with the first air mixing chamber 8, the second air mixing chamber 12 and the third air mixing chamber 13 for introducing the air into the air mixing chambers and mixing the air entering from the air inlet.

In order to prevent the air entering the air inlet from flowing into the air return duct, in this embodiment, a baffle 81 is disposed at a connection position between the air mixing chamber and the air return duct, and the baffle can also be regarded as a flow guide plate, which plays a role of flow guide, and prevents turbulence from occurring at an air flow intersection, thereby ensuring that the air is smoothly mixed in the air mixing chamber and enters the first air duct 21 of the circulating air duct.

The embodiment also comprises a shell 17 sleeved on the hot pressing plate body 1, the periphery of the hot pressing plate body 1 is surrounded by the shell 17, one side of the shell 17 is provided with a turnover cover 171, and the other three sides are fixed and can not be turned over. The bottom of the hot pressing board body 1 is provided with a temperature sensor 18 and an auxiliary heating sheet 19 which are connected with a hot pressing machine controller, and the temperature sensor 18 and the auxiliary heating sheet 19 are respectively positioned at two sides of an air outlet 20. Temperature sensor 18 can real-time detection hot plate body 1 bottom air outlet 20 around temperature and heating state, the during operation of being convenient for carries out temperature and job monitoring to hot pressboard body 1 bottom, can in time discover to overheated and the not enough condition of temperature.

When using this embodiment, hot pressboard body bottom sets up a plurality of air outlets 20, and the effectual temperature of having avoided hot pressboard body 1 is too concentrated and is leaded to overheated problem for hot pressboard body 1's bulk temperature is even. A wind circulation loop, an air return channel and a gas mixing chamber are arranged in the hot pressing plate body 1, so that the circulation loop is greatly optimized. After the gas in the first air passage 21 is heated, a part of the gas is discharged through the air outlet, and a part of the gas is introduced into the gas mixing chamber again through the air return passage to be mixed with the air in the air inlet, so that the heat utilization rate is improved. The hot press machine controller calculates the temperature change rule of the hot press plate body 1 according to the information such as the temperature returned by the temperature sensor 18, the set wind speed and the like by a machine learning method, and debugs the required temperature in advance, thereby greatly shortening the heating time and improving the working efficiency.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A hot press plate for a hot press, which heats uniformly, comprising: hot pressboard body (1), set up in a plurality of heating plates (14, 15, 16) of hot pressboard body (1) inside at interval, its characterized in that: still including locating a plurality of air intakes (9, 10, 11) and a plurality of air outlet (20) of hot pressboard body (1) upper and lower surface respectively to and locate inside circulation air flue (21, 22, 23) and the return airway (31, 32, 33) that constitute the wind circulation return circuit of hot pressboard body (1), air intake (9, 10, 11) below is provided with gas mixing chamber (8, 12, 13), return airway (31, 32, 33) are connected gas mixing chamber (8, 12, 13) and circulation air flue (21, 22, 23) respectively for introduce gas mixing chamber (8, 12, 13) with the gas part in the circulation air flue (21, 22, 23).

2. The hot press plate for a hot press of claim 1, wherein: the air inlets (9, 10, 11) are positioned above the heating sheets (14, 15, 16) and correspond to one another.

3. The hot press plate for a hot press of claim 1, wherein: and a baffle plate (81) for preventing the gas entering the air inlets (9, 10, 11) from flowing into the air return channels (31, 32, 33) is arranged at the connecting part of the gas mixing chambers (8, 12, 13) and the air return channels (31, 32, 33).

4. The hot press plate for a hot press of claim 1, wherein: the circulating air passages (21, 22, 23) comprise a first air passage (21) and a second air passage (22) which are respectively arranged above and below the heating sheets (14, 15, 16) and are horizontally arranged, and the first air passage (21) is communicated with the second air passage (22) at the tail ends.

5. The hot press plate for a hot press of claim 1, wherein: the first air passage (21) and the second air passage (22) are communicated through a vertical third air passage (23) arranged at the tail end.

6. The hot press plate for a hot press of claim 5, wherein: the air return channels (31, 32 and 33) comprise a fourth air channel (31), a fifth air channel (32) and a sixth air channel (33) which are connected in sequence, the fourth air channel (31) is connected with the lower end of the second air channel (22), and the sixth air channel (33) is connected with the gas mixing chambers (8, 12 and 13).

7. The hot press plate for a hot press of claim 5, wherein: the hot-pressing board is also provided with a shell (17) sleeved on the hot-pressing board body (1), and one side of the shell (17) is provided with a turnover cover (171).

8. The hot press plate for a hot press of claim 1, wherein: the bottom of the hot pressing board body (1) is provided with a temperature sensor (18) and an auxiliary heating sheet (19) which are connected with a hot pressing machine controller.

9. The hot press plate for a hot press of claim 8, wherein: the temperature sensor (18) and the auxiliary heating sheet (19) are respectively positioned at two sides of the air outlet (20).