A glass fiber bread mold production press forming device and method

Abstract

The present application relates to a kind of glass fibre bread mould production is pressed forming device and method, including movable die holder and bottom die holder, the upper surface of bottom die holder is provided with recessed die, the lower surface of movable die holder is provided with convex die assembly, convex die assembly includes convex die side wall, convex die bottom wall, and the rubber surrounding edge connected between convex die side wall and convex die bottom wall, rubber surrounding edge is flush with the outer wall of convex die side wall, convex die bottom wall, sliding seat is arranged in the inside of convex die side wall, sliding column is slidably arranged in sliding seat and is connected with convex die bottom wall.The device and by setting the pressure structure of each row pressurization, make the convex die bottom wall in convex die assembly each row down pressure, only after the previous row convex die assembly down pressure, pressure will be transmitted to next level convex die assembly, and cooperate with the bottom die holder of inclination, air is driven gradually, prevent gap after moulding small and lead to exhaust difficulty, and by setting rubber surrounding edge form flexible round corner, prevent glass fibre from being scratched when forming.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bread mold, and particularly relates to a pressing forming device and method for glass fiber bread mold production. BACKGROUND

[0002] The bread mold is a forming mold during bread baking. In order to reduce the adhesion of bread and the mold, the bread mold is usually made of flexible silica gel material. The flexible mold not only has anti-adhesion, but also can be deformed by extrusion, which is more convenient for bread demolding. In order to improve the strength of silica gel, glass fiber cloth can be formed together with silica gel. However, in the prior art, the bread mold is relatively thin and has a tortuous mold cavity, and is blocked by the glass fiber cloth, so that the silica gel in the bread mold is difficult to exhaust during the forming in the mold, resulting in many bubble defects. In addition, the glass fiber needs to be heated to about 200 DEG C during forming. At this time, the glass fiber is relatively fragile, and is easily scratched by the mold with edges during pressure forming. SUMMARY

[0003] The purpose of the application is to provide a pressing forming device and method for glass fiber bread mold production to solve the above problems.

[0004] The application achieves the above purpose by the following technical scheme:

[0005] A pressing forming device for glass fiber bread mold production, comprising a movable die seat and a bottom die seat, wherein the upper surface of the bottom die seat is provided with a female die, and the lower surface of the movable die seat is provided with a male die assembly, the male die assembly comprises a male die side wall, a male die bottom wall and a rubber surrounding edge connected between the male die side wall and the male die bottom wall, the rubber surrounding edge is flush with the outer walls of the male die side wall and the male die bottom wall, the inside of the male die side wall is provided with a sliding seat, and a sliding column connected with the male die bottom wall is slidably arranged in the sliding seat.

[0006] The movable die seat is provided with a pressurizing mechanism for sequentially pressurizing each row of the male die assembly, the pressurizing mechanism sequentially drives each row of the male die bottom wall to press down through hydraulic drive, and a pressure relief structure is arranged for resetting, and an exhaust valve is further arranged in the movable die seat.

[0007] As a further optimization scheme of the application, the pressurizing mechanism comprises a pressurizing assembly, a total pressurizing pipe, a plurality of sub-pressurizing pipes arranged in series at the tail end of the total pressurizing pipe, each sub-pressurizing pipe is connected with the mold cavity of one row of male die assemblies, a trumpet-shaped connecting groove is arranged at the connection position of the tail end and the head end of the sub-pressurizing pipe, the upper surface of the sliding column is provided with a valve column through a connecting rod, the top end of the valve column extends into the connection position of each sub-pressurizing pipe, the connecting groove is always connected with the mold cavity of the male die assembly, and the valve column is connected with the next sub-pressurizing pipe when it moves downward. By arranging the structure of sequential pressurization, the male die bottom walls in the male die assembly are sequentially pressed down, and the air is sequentially driven away, so that the exhaust difficulty caused by small gap after the mold is closed is prevented.

[0008] As a further optimization scheme of the present application, each pressurizing pipe is provided with a pressure relief pipe with a solenoid valve, and the pressure in the cavity of the punch assembly is discharged after the pressure relief pipe is opened.

[0009] As a further optimization scheme of the present application, a tension spring is arranged in the sliding seat for pulling up the slide, for pulling the bottom wall of the punch back to position, and the bottom wall of the punch is pulled up by the tension spring after pressure relief.

[0010] As a further optimization scheme of the present application, grooves are arranged on the outer surfaces of the side wall and the bottom wall of the punch, the grooves are used for fixing the rubber surrounding edge and keeping the outer walls flush with each other, the rubber surrounding edge is high-temperature-resistant rubber, the rubber surrounding edge is attached to the inner wall of the die under hydraulic pressure, for forming the glass fiber / liquid silica gel, and the rubber surrounding edge forms a flexible fillet when there is no pressure, preventing the glass fiber from being scratched.

[0011] As a further optimization scheme of the present application, the movable die seat is driven to lift by a hydraulic cylinder, and the hydraulic cylinder is arranged on the surface of the bottom die seat through a support, which is a prior art and is used to drive the movable die seat to lift.

[0012] As a further optimization scheme of the present application, the bottom die seat is arranged obliquely on the surface of the base, one end of the bottom die seat is hinged to the base through a hinge joint, and the other end is driven to lift by a lifting seat arranged on the surface of the base, and the effect of driving air can be further improved by the oblique bottom die seat and the step-by-step downward punch bottom wall.

[0013] In order to implement the above device, the present application further provides a bread mold pressing forming method based on the above device, comprising the following steps:

[0014] S1: heating the glass fiber cloth to 200-220 DEG C to make it plastic, putting it into the die, and pressing the movable die seat and the die together, the pressing mechanism operates to press the bottom wall of the punch, and the glass fiber cloth is pressed and formed to form a bread mold skeleton;

[0015] S2: the pressing mechanism retracts the bottom wall of the punch, uniformly injects liquid silica gel into the die, presses the movable die seat and the die together again, the pressing mechanism pressurizes the inside of the punch assembly row by row to discharge air, slowly moves the bottom wall of the punch downward, and uniformly extrudes the liquid silica gel of the die to form a bread mold blank;

[0016] S3: the bread mold blank is solidified to form a bread mold finished product, the movable die seat is moved upward, and the mold is demolded.

[0017] The present application has the following advantages:

[0018] The present application sets the pressurizing structure of row-by-row pressurization, so that the punch bottom wall in the punch assembly is pressed row by row, and the pressure is transmitted to the next level punch assembly only after the previous row of punch assembly is pressed, and cooperates with the inclined bottom die seat to drive the air step by step, prevents the small gap after the mold closing from causing difficult exhaust, and prevents the glass fiber from being scratched during forming by setting the flexible round corner formed by the rubber surrounding edge. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic diagram of the present application;

[0020] Figure 2 is the main view of the movable die seat of the present application;

[0021] Figure 3 is the Figure 1 structure enlarged view of part A of the present application;

[0022] Figure 4 is the bottom view of the movable die seat of the present application;

[0023] In the figure: 1, base; 2, bottom die seat; 201, concave die; 202, hinge joint; 203, lifting seat; 3, movable die seat; 301, exhaust valve; 4, punch assembly; 41, punch side wall; 42, punch bottom wall; 43, rubber surrounding edge; 44, groove; 45, sliding seat; 46, sliding column; 47, connecting rod; 48, tension spring; 49, valve column; 5, pressurizing mechanism; 51, pressurizing assembly; 52, total pressurizing pipe; 53, connecting groove; 54, partial pressurizing pipe; 55, pressure relief pipe; 56, electromagnetic valve; 6, support; 7, hydraulic cylinder. DETAILED DESCRIPTION

[0024] It is necessary to point out here that the following detailed description is only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application, and those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0025] Example 1

[0026] As Figures 1-4 shown, a glass fiber bread mold production press forming device, including movable die seat 3 and bottom die seat 2, the upper surface of the bottom die seat 2 is provided with a concave die 201, the lower surface of the movable die seat 3 is provided with a punch assembly 4, the punch assembly 4 includes a punch side wall 41, a punch bottom wall 42, and a rubber surrounding edge 43 connected between the punch side wall 41 and the punch bottom wall 42, the rubber surrounding edge 43 is flush with the outer wall of the punch side wall 41 and the punch bottom wall 42, the inside of the punch side wall 41 is provided with a sliding seat 45, and the sliding seat 45 is provided with a sliding column 46 connected with the punch bottom wall 42;

[0027] The movable die seat 3 is provided with a pressurizing mechanism 5 for pressurizing the inside of the male die assembly 4 row by row, the pressurizing mechanism 5 drives each row of male die bottom walls 42 to press down in turn through hydraulic drive, and is provided with a pressure relief structure for resetting, and the movable die seat 3 is further provided with an exhaust valve 301.

[0028] The pressurizing mechanism 5 comprises a pressurizing assembly 51, a total pressurizing pipe 52, and a plurality of sub-pressurizing pipes 54 connected in series at the tail end of the total pressurizing pipe 52, wherein the pressurizing assembly 51 can adopt gas pressurization or liquid pressurization, each sub-pressurizing pipe 54 is communicated with the mold cavity of one row of male die assemblies 4, and the tail end of the sub-pressurizing pipe 54 is provided with a trumpet-shaped connecting groove 53, wherein the upper surface of the slide column 46 is provided with a valve column 49 through a connecting rod 47, the top end of the valve column 49 extends into the connecting position of each sub-pressurizing pipe 54, the connecting groove 53 is always communicated with the mold cavity of the male die assembly 4, and the valve column 49 is lowered to guide the communication of the next sub-pressurizing pipe 54, through the structure of pressurizing row by row, the male die bottom walls 42 in the male die assembly 4 are pressed down row by row, and the air is driven step by step, so that the gap after the mold is closed is small and the air exhaust is difficult to prevent, wherein when the male die bottom wall 42 is pressed down to the bottom end, the valve column 49 is lowered to make the upper end of the connecting groove 53 communicated with the next sub-pressurizing pipe 54.

[0029] Each sub-pressurizing pipe 54 is provided with a pressure relief pipe 55 with a solenoid valve 56, the pressure relief pipe 55 discharges the pressure in the mold cavity of the male die assembly 4 after being opened, the slide seat 45 is provided with a tension spring 48 for pulling up the slide column 46, for pulling the male die bottom wall 42 to reset, and the male die bottom wall 42 is pulled up through the pullback of the tension spring 48 after pressure relief.

[0030] The outer surfaces of the male die side wall 41 and the male die bottom wall 42 are provided with grooves 44, the grooves 44 are used for fixing the rubber surrounding edge 43 and keeping the outer walls flush with each other, the rubber surrounding edge 43 is high-temperature-resistant rubber, the rubber surrounding edge 43 is attached to the inner wall of the female die 201 under pressure, and is used for forming glass fiber / liquid silica gel, when there is no pressure, the rubber surrounding edge 43 forms a flexible round corner, and the glass fiber is prevented from being scratched during forming.

[0031] The movable die seat 3 is driven to lift through a hydraulic cylinder 7, the hydraulic cylinder 7 is arranged on the surface of the bottom die seat 2 through a support 6, and this structure is prior art and is used for driving the movable die seat to lift.

[0032] The bottom die seat 2 is arranged obliquely on the surface of the base 1, one end of the bottom die seat 2 is hinged to the base 1 through a hinge joint 202, and the other end is driven to lift by a lifting seat 203 arranged on the surface of the base 1, through the oblique arrangement of the bottom die seat 2 and the step-by-step downward pressing of the male die bottom wall 42, the effect of driving air can be further improved.

[0033] In order to implement the above device, the present application further provides a bread mold pressing forming method based on the above device, comprising the following steps:

[0034] S1: the glass fiber cloth is heated to 200-220 DEG C, the glass fiber cloth has plasticity, is put into the female die 201, and the movable die seat 3 and the female die 201 are combined by pressing, the pressing mechanism 5 is operated, the male die bottom wall 42 is pressed down, the glass fiber cloth is pressed into shape, the bread mold skeleton is formed, in the pressing process, in order to prevent the glass fiber cloth from shrinking inwardly, measures can be taken to fix the four edges, which will not be repeated here, and this time the mold is not completely pressed, the female die 201 and the male die assembly 4 still have a silica gel filling gap, this step is only used to form a recess in the glass fiber cloth;

[0035] S2: the pressing mechanism 5 retracts the male die bottom wall 42, uniformly injects liquid silica gel into the female die 201, and combines the movable die seat 3 and the female die 201 again, the pressing mechanism 5 pressurizes the inside of the male die assembly 4 row by row, for air discharge, so that the male die bottom wall 42 slowly moves down, and the liquid silica gel of the female die 201 is extruded uniformly to form a bread mold blank;

[0036] S3: the bread mold blank is solidified to form a bread mold finished product, the movable die seat 3 is moved up, and the mold is demolded.

[0037] The operation principle is that, in the application, after the liquid silica gel is injected and the mold is combined, the pressing assembly 51 pressurizes the sub-pressing pipes 54 through the total pressing pipe 52, the first row of sub-pressing pipes 54 are interconnected, the male die bottom wall 42 moves down after pressurization, the liquid silica gel in the female die 44 is extruded out, the valve column 49 moves down after the male die bottom wall 42 moves down, the communication groove 53 is communicated with the next stage of sub-pressing pipes 54, and the next stage of sub-pressing pipes 54 is continuously pressurized, and so on, so that the air is gradually discharged to the exhaust valve 301, and the gas is difficult to discharge caused by synchronous pressing is avoided.

[0038] The above-described embodiments only express several embodiments of the application, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which belong to the protection scope of the application.

Claims

1. A press molding device for glass fiber bread mold production, comprising a movable die holder (3) and a bottom die holder (2), characterized in that: The bottom die seat (2) upper surface is provided with a concave die (201), the movable die seat (3) lower surface is provided with a convex die assembly (4), the convex die assembly (4) includes convex die side wall (41), convex die bottom wall (42), and the rubber surrounding edge (43) connected between convex die side wall (41) and convex die bottom wall (42), the rubber surrounding edge (43) is flush with the outer wall of convex die side wall (41), convex die bottom wall (42), the inside of convex die side wall (41) is provided with a sliding seat (45), the sliding seat (45) is provided with a sliding column (46) connected with the inside of convex die bottom wall (42); The movable die seat (3) is provided with a pressurizing mechanism (5) for pressurizing each row of the inside of the convex die assembly (4), the pressurizing mechanism (5) drives each row of convex die bottom wall (42) to press down in turn through hydraulic pressure, and is provided with a pressure relief structure for resetting, and the movable die seat (3) is further provided with an exhaust valve (301).

2. The press molding device for glass fiber bread mold production according to claim 1, characterized in that: The pressurizing mechanism (5) includes a pressurizing assembly (51), a total pressurizing pipe (52), a plurality of sub-pressurizing pipes (54) arranged at the tail end of the total pressurizing pipe (52) and sequentially connected in head-tail order, each sub-pressurizing pipe (54) is communicated with the mold cavity of one row of convex die assemblies (4), the head-tail connection of the sub-pressurizing pipe (54) is provided with a trumpet-shaped connecting groove (53), wherein the upper surface of the sliding column (46) is provided with a valve column (49) through a connecting rod (47), the top end of the valve column (49) extends into the connection of each sub-pressurizing pipe (54), the connecting groove (53) is always communicated with the mold cavity of the convex die assembly (4), and the valve column (49) is lowered to guide the communication of the next sub-pressurizing pipe (54).

3. The press molding device for glass fiber bread mold production according to claim 2, characterized in that: Each sub-pressurizing pipe (54) is provided with a pressure relief pipe (55) with a solenoid valve (56).

4. The press molding device for glass fiber bread mold production of claim 1, wherein: The sliding seat (45) is provided with a tension spring (48) for pulling up the sliding column (46) and for pulling the convex die bottom wall (42) to reset.

5. The press molding device for glass fiber bread mold production of claim 1, wherein: The outer surfaces of the convex die side wall (41) and the convex die bottom wall (42) are provided with grooves (44), the grooves (44) are used for fixing the rubber surrounding edge (43) and keeping the outer walls flush with each other, and the rubber surrounding edge (43) is high-temperature-resistant rubber.

6. The press molding device for glass fiber bread mold production of claim 1, wherein: The movable die seat (3) is driven to lift by a hydraulic cylinder (7), and the hydraulic cylinder (7) is arranged on the surface of the bottom die seat (2) through a support (6).

7. The press molding device for glass fiber bread mold production of claim 1, wherein: The bottom die seat (2) is arranged obliquely on the surface of the base (1), one end of the bottom die seat (2) is hinged to the base (1) through a hinge joint (202), and the other end is driven to lift by a lifting seat (203) arranged on the surface of the base (1).

8. A bread mould pressing method based on the apparatus according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1: heating the glass fiber cloth to 200-220 DEG C to make the glass fiber cloth plastic, putting it into the concave die (201), and lowering the movable die seat (3) to combine with the concave die (201), the pressurizing mechanism (5) is operated to make the convex die bottom wall (42) press down, the glass fiber cloth is pressed into shape to form a bread mold skeleton; S2: the pressing mechanism (5) retracts the bottom wall (42) of the male mold, uniformly injects liquid silica gel into the female mold (201), and again presses the movable mold base (3) to combine with the female mold (201). The pressing mechanism (5) pressurizes the inside of the male mold assembly (4) row by row to expel air, slowly lower the bottom wall (42) of the male mold, and uniformly extrude the liquid silica gel of the female mold (201) to form a bread model blank; S3: After the bread model blank is cured, the movable mold base (3) is raised to perform demolding.

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