Hot press molding device for silicon nitride substrate production

Abstract

The utility model relates to a hot press molding device for producing a silicon nitride substrate, in particular to the technical field of electronic component material preparation. Comprising a first driving air cylinder, a pressing plate, a mold box, a heat preservation mechanism, a moving plate, a lifting mechanism, a second driving air cylinder, a pushing plate and a material collecting mechanism. The problem that heat loss is easily caused due to the fact that no heat preservation structure is arranged in the hot pressing device is solved; and after the surface of the mold is scraped, the scraped powder is usually not recycled or is manually collected, so that certain manpower resource waste is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic component material preparation, in particular to a hot pressing molding device for producing a silicon nitride substrate. Background Art

[0002] With the development of human technology, more and more electric-driven motor equipment are being developed. Aircraft, high-speed railways, ships, electric vehicles, etc. are all moving towards electric drive, which is environmentally friendly, reduces pollution, saves energy, and has a high level of automation. Due to the high power of electric drive, the insulated gate bipolar transistor (IGBT) that controls the motor currently uses a ceramic substrate made of silicon nitride with high thermal conductivity. During the processing of silicon nitride ceramic substrates, it is necessary to undergo a step of hot pressing. Usually, three layers of blanks are used, namely, upper cover material, base material, and lower cover material for hot pressing.

[0003] However, the current hot pressing device is not equipped with a heat preservation structure, which easily causes heat loss and further wastes electricity resources. In addition, after unloading, the powder on the mold surface needs to be scraped flat and then compacted. However, the powder scraped off in the current device is usually not recovered, or the recovery method generally adopts manual collection, resulting in a certain waste of human resources. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] The utility model provides a hot pressing molding device for producing silicon nitride substrates, which overcomes the problem that the hot pressing device is not provided with a heat preservation structure, which easily causes heat loss; and after scraping the mold surface, the scraped powder is usually not recovered, or is collected manually, resulting in a certain waste of human resources.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a hot pressing molding device for producing silicon nitride substrates, including a first driving cylinder, a pressing plate, a mold box, a heat preservation mechanism, a moving plate, a lifting mechanism, a second driving cylinder, a push plate, and a material collecting mechanism;

[0008] The first driving cylinder is provided on the top of the box body; the connecting rod of the first driving cylinder is connected to the pressing plate; a fixed plate is provided in the middle of the box body; the mold box is provided in the middle of the fixed plate; the insulation mechanism is provided on the outside of the mold box; the bottom of the mold box is a slidingly connected movable plate; the lifting mechanism is provided on the movable plate; the second driving cylinder is provided on one side above the fixed plate; the connecting rod of the second driving cylinder is connected to the pushing plate; a discharge port is provided on the other side above the fixed plate; the collecting mechanism is provided below the discharge port; a discharge track is obliquely provided at the rear end of the fixed plate.

[0009] Preferably, a first scale line, a second scale line and a third scale line are provided on the outer side of the mold box.

[0010] Preferably, the heat preservation mechanism comprises a heat preservation layer, a water inlet, a water outlet, and a heating oil pipe;

[0011] The outer wall of the mold box is a double wall, and the insulation layer is formed between the double walls; the water inlet and the water outlet connected to the insulation layer are provided on the outer side of the mold box; the water inlet and the water outlet are connected to the external steam supply device; the heating oil pipe is provided inside the insulation layer.

[0012] Preferably, the lifting mechanism comprises a moving block, a rack, a mounting frame, a servo motor, and a gear;

[0013] The moving block is provided at the bottom of the moving plate; the rack is provided on the moving block; the mounting frame is provided at the bottom of the mold box; the servo motor is provided inside the mounting frame; the output shaft of the servo motor is connected to the gear; the rack and the gear are meshed and transmission-connected with each other.

[0014] Preferably, the material collecting mechanism comprises a rotating motor, a rotating shaft, a partition, a rotating drum, and a rotating disk;

[0015] The rotating motor is installed on the side wall of the box body near the discharge port; the output shaft of the rotating motor is connected to the rotating shaft; the partition is fixedly connected to the rotating shaft; the partition is fixedly connected to the inside of the rotating drum; the bottom of the rotating drum is rotatably installed on the side wall of the box body through the turntable.

[0016] (3) Beneficial effects

[0017] The utility model provides a hot pressing molding device for producing silicon nitride substrates, which overcomes the problem that the hot pressing device is not provided with a heat preservation structure, which easily causes heat loss; and after scraping the mold surface, the scraped powder is usually not recovered, or is collected manually, resulting in a certain waste of human resources.

[0018] 1. The utility model provides a heat preservation mechanism so that the outside of the mold box can be kept warm, further avoiding the problem of waste of electric heating resources.

[0019] 2. The utility model provides a material collecting mechanism and turns on a rotating motor so that the scraped powder can be recovered, thus avoiding a certain waste of human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A hot pressing molding device for producing silicon nitride substrates proposed by the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the cooling pool in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the cooling box in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the rapid cooling mechanism in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the control component in the utility model;

[0025] Figure markings: 1-box, 2-first driving cylinder, 3-pressing plate, 4-fixing plate, 5-mold box, 6-insulation mechanism, 61-insulation layer, 62-water inlet, 63-water outlet, 64-heating oil pipe, 7-movable plate, 8-lifting mechanism, 81-moving block, 82-rack, 83-mounting frame, 84-servo motor, 85-gear, 9-second driving cylinder, 10-push plate, 11-discharge port, 12-collecting mechanism, 121-rotating motor, 122-rotating shaft, 123-partition, 124-rotating drum, 125-turntable, 13-unloading track. DETAILED DESCRIPTION

[0026] The utility model is further described in conjunction with the accompanying drawings and embodiments.

[0027] like Figures 1 to 5 As shown, the utility model of a hot pressing molding device for producing silicon nitride substrates includes a first driving cylinder 2, a pressing plate 3, a mold box 5, a heat preservation mechanism 6, a moving plate 7, a lifting mechanism 8, a second driving cylinder 9, a push plate 10, and a material collecting mechanism 12;

[0028] The first driving cylinder 2 is provided on the top of the box body 1; the connecting rod of the first driving cylinder 2 is connected to the pressing plate 3; a fixed plate 4 is provided in the middle of the box body 1; the mold box 5 is provided in the middle of the fixed plate 4; the insulation mechanism 6 is provided on the outside of the mold box 5; the bottom of the mold box 5 is a slidingly connected moving plate 7; the moving plate 7 is provided with the lifting mechanism 8; the second driving cylinder 9 is provided on one side above the fixed plate 4; the connecting rod of the second driving cylinder 9 is connected to the pushing plate 10; a discharge port 11 is provided on the other side above the fixed plate 4; the collecting mechanism 12 is provided below the discharge port 11; and a discharge track 13 is obliquely provided at the rear end of the fixed plate 4.

[0029] The first scale mark, the second scale mark and the third scale mark are arranged on the outside of the mold box 5. The movable plate 7 moves to the position of the corresponding scale mark during the movement.

[0030] The heat preservation mechanism 6 includes a heat preservation layer 61, a water inlet 62, a water outlet 63, and a heating oil pipe 64;

[0031] The outer wall of the mold box 5 is a double-layer wall, and the insulation layer 61 is formed between the double-layer walls; the water inlet 62 and the water outlet 63 connected to the insulation layer 61 are provided on the outer side of the mold box 5; the water inlet 62 and the water outlet 63 are connected to an external steam supply device; the heating oil pipe 64 is provided inside the insulation layer 61. By providing the heating oil pipe 64 inside the insulation layer 61, the water in the insulation layer 61 can be further insulated, avoiding the problem of waste of resources.

[0032] The lifting mechanism 8 includes a moving block 81, a rack 82, a mounting frame 83, a servo motor 84, and a gear 85;

[0033] The moving block 81 is provided at the bottom of the moving plate 7; the rack 82 is provided on the moving block 81; the mounting frame 83 is provided at the bottom of the mold box 5; the servo motor 84 is provided inside the mounting frame 83; the output shaft of the servo motor 84 is connected to the gear 85; the rack 82 and the gear 85 are meshed and transmission connected with each other.

[0034] The material collecting mechanism 12 includes a rotating motor 121, a rotating shaft 122, a partition 123, a rotating drum 124, and a rotating disk 125;

[0035] The rotating motor 121 is installed on the side wall of the box body 1 near the discharge port 11; the output shaft of the rotating motor 121 is connected to the rotating shaft 122; the partition 123 is fixedly connected to the rotating shaft 122; the partition 123 is fixedly connected to the inside of the rotating drum 124; the bottom of the rotating drum 124 is rotatably installed on the side wall of the box body 1 through the rotating disk 125. By setting the collecting mechanism 12, the scraped blank can be recovered in time.

[0036] Working principle: the lower covering stock enters the mold box 5 through the unloading track 13, at this time, the moving plate 7 is located at the first scale line of the mold box 5, the first driving cylinder 2 is turned on, so that the connecting rod of the first driving cylinder 2 drives the pressing plate 3 to compact and heat the stock; then the second driving cylinder 9 is turned on, so that the second driving cylinder 9 drives the push plate 10 to scrape the powder on the surface of the mold box 5, and then these stock are pushed to the discharge port 11 and enter the inside of the rotating drum 124, and different stock can be separated by turning on the rotating motor 121, so as to achieve the effect of collecting the stock separately; by turning on the servo motor 84, the motor drives the gear 85 to rotate, so that the moving plate 7 fixedly connected to the rack 82 moves down one layer, and then repeats the previous step, so that the middle layer of the base material is compacted and heated, and finally the uppermost covering stock is also flattened and heated; the heated and formed base material is taken out from the mold box 5. The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0037] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but the utility model is not limited to these embodiments. It should be pointed out that for ordinary technicians in this field. Under the premise of not departing from the purpose of the utility model, any improvement made shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hot pressing molding device for producing silicon nitride substrates, characterized in that: It comprises a first driving cylinder (2), a pressing plate (3), a mold box (5), a heat preservation mechanism (6), a moving plate (7), a lifting mechanism (8), a second driving cylinder (9), a pushing plate (10), and a material collecting mechanism (12); The first driving cylinder (2) is provided on the top of the box body (1); the connecting rod of the first driving cylinder (2) is connected to the pressing plate (3); a fixed plate (4) is provided in the middle of the box body (1); the mold box (5) is provided in the middle of the fixed plate (4); the heat preservation mechanism (6) is provided on the outside of the mold box (5); the bottom of the mold box (5) is a slidingly connected moving plate (7); the moving plate (7) is provided with the lifting mechanism (8); the second driving cylinder (9) is provided on one side above the fixed plate (4); the connecting rod of the second driving cylinder (9) is connected to the pushing plate (10); a discharge port (11) is provided on the other side above the fixed plate (4); the collecting mechanism (12) is provided below the discharge port (11); and a discharge track (13) is obliquely provided at the rear end of the fixed plate (4).

2. A hot pressing molding device for producing a silicon nitride substrate according to claim 1, characterized in that: The outer side of the mold box (5) is provided with a first scale line, a second scale line and a third scale line.

3. A hot pressing molding device for producing a silicon nitride substrate according to claim 1, characterized in that: The heat-insulating mechanism (6) comprises a heat-insulating layer (61), a water inlet (62), a water outlet (63), and a heating oil pipe (64); The outer wall of the mold box (5) is a double-layer wall, and the thermal insulation layer (61) is formed between the double-layer walls; the water inlet (62) and the water outlet (63) connected to the thermal insulation layer (61) are provided on the outer side of the mold box (5); the water inlet (62) and the water outlet (63) are connected to an external steam supply device; and the heating oil pipe (64) is provided inside the thermal insulation layer (61).

4. A hot pressing molding device for producing a silicon nitride substrate according to claim 1, characterized in that: The lifting mechanism (8) comprises a moving block (81), a rack (82), a mounting frame (83), a servo motor (84), and a gear (85); The bottom of the movable plate (7) is provided with the movable block (81); the movable block (81) is provided with the rack (82); the bottom of the mold box (5) is provided with the mounting frame (83); the servo motor (84) is provided inside the mounting frame (83); the output shaft of the servo motor (84) is connected to the gear (85); the rack (82) and the gear (85) are meshed and transmission-connected with each other.

5. A hot pressing molding device for producing a silicon nitride substrate according to claim 1, characterized in that: The material collecting mechanism (12) comprises a rotating motor (121), a rotating shaft (122), a partition (123), a rotating drum (124), and a rotating disk (125); The rotating motor (121) is installed on the side wall of the box body (1) close to the discharge port (11); the output shaft of the rotating motor (121) is connected to the rotating shaft (122); the partition (123) is fixedly connected to the rotating shaft (122); the partition (123) is fixedly connected to the inside of the rotating drum (124); the bottom of the rotating drum (124) is rotatably installed on the side wall of the box body (1) through the rotating disk (125).

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