Forming die with defoaming structure

Abstract

The utility model discloses a forming die with a defoaming structure, which comprises a forming die, a plurality of rows of longitudinal exhaust pipes are fixedly arranged at the upper end of the forming die, transverse exhaust pipes are fixedly arranged at the upper end of the forming die, the transverse exhaust pipes and the longitudinal exhaust pipes are arranged in a staggered manner, a plurality of forming shells are fixedly arranged at the upper end of the forming die, and the forming shells are arranged in a staggered manner. The forming shell is located between the transverse exhaust pipe and the longitudinal exhaust pipe which correspond to each other, and a plurality of sets of exhaust holes are formed in the outer sides of the transverse exhaust pipe and the longitudinal exhaust pipe at equal intervals. Through the arrangement of the exhaust holes in the transverse exhaust pipe and the longitudinal exhaust pipe, when a plate directly covers the forming die, bubbles which do not run out between the forming die and the plate can be effectively eliminated, the bubbles which do not run out in time can be pumped out, the product quality of the blister tray is greatly improved, and defective products of the blister tray are reduced.

Description

Technical Field

[0001] The utility model relates to the field of blister tray molds, in particular to a forming mold with a defoaming structure. Background Art

[0002] Blister trays, also known as plastic inner trays, are plastic products made by forming hard plastic sheets into specific grooves through the blister process. This type of tray is mainly used to place products in its grooves to protect and beautify the products. It also has the function of transport pallet packaging.

[0003] When using blister trays, corresponding molds are generally used to produce blister trays. However, in actual production, because the sheet directly covers the center of the mold, bubbles may be generated and cannot be discharged in time, affecting the overall quality and appearance of the blister tray.

[0004] Therefore, it is necessary to propose a new molding die with a defoaming structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a forming mold with a defoaming structure to solve the problem that bubbles may be generated in the center of the mold and cannot be discharged in time, affecting the overall quality and aesthetics of the blister tray.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a forming mold with a defoaming structure, comprising a forming mold, a plurality of rows of longitudinal exhaust pipes fixedly provided on the upper end of the forming mold, a transverse exhaust pipe fixedly provided on the upper end of the forming mold, the transverse exhaust pipes and the longitudinal exhaust pipes being staggered, and a plurality of forming shells fixedly provided on the upper end of the forming mold;

[0007] The molded shell is located between the corresponding transverse exhaust pipe and longitudinal exhaust pipe, and multiple groups of exhaust holes are evenly spaced on the outer sides of the transverse exhaust pipe and the longitudinal exhaust pipe;

[0008] The forming mold is hollow.

[0009] Preferably, a fixing plate is fixedly provided on the inner side of the forming mold, an air bag is fixedly provided on the lower end of the fixing plate, and a plurality of ventilation holes are provided through one end of the air bag and the fixing plate.

[0010] Preferably, an exhaust pipe is provided at the lower end of the forming mold, and a three-way pipe is provided on the inner side of the forming mold. The exhaust pipe is connected to the three-way pipe. The three-way pipe passes through the airbag and the fixed plate. A plurality of sealing rings are fixedly provided on the upper end of the fixed plate. The sealing rings are fixed and sealed to the corresponding three-way pipes.

[0011] Preferably, a sealing plate is fixedly provided on the upper end of the forming die.

[0012] Preferably, the inner side of the forming mold is sealed.

[0013] The technical effects and advantages of this utility model are:

[0014] By setting the exhaust holes on the horizontal exhaust pipe and the longitudinal exhaust pipe, when the plate is directly covered on the forming die, the bubbles that have not escaped between the forming die and the plate can be effectively eliminated and the bubbles that have not escaped in time can be extracted, which greatly improves the product quality of the blister tray and reduces the defective products.

[0015] By setting the airbag, after the blister tray is formed, after the exhaust pipe stops exhausting, the airbag expands due to the decrease in air pressure in the forming mold, increasing the air pressure in the forming mold, and then squeezing out the sheet material entering the exhaust hole, making it easier to unload the sheet material after it is formed into a blister tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a forming mold with a defoaming structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the airbag structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the forming die of the present invention.

[0019] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of point A in the middle.

[0020] In the figure: 1. forming mold; 2. exhaust pipe; 201. tee pipe; 3. sealing plate; 4. forming shell; 5. longitudinal exhaust pipe; 6. transverse exhaust pipe; 7. exhaust hole; 8. fixing plate; 801. vent hole; 9. airbag; 10. sealing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 - Figure 4As shown, the utility model provides a forming mold with a defoaming structure, including a forming mold 1, the forming mold 1 is hollow, and a sealing plate 3 is fixedly provided on the upper end of the forming mold 1 for cutting out a blister tray, and the shape of the sealing plate 3 is determined according to the final outer edge shape of the blister tray, a plurality of rows of longitudinal exhaust pipes 5 are fixedly provided on the upper end of the forming mold 1, a transverse exhaust pipe 6 is fixedly provided on the upper end of the forming mold 1, the transverse exhaust pipe 6 and the longitudinal exhaust pipe 5 are staggered, and the transverse exhaust pipe 6 and the longitudinal exhaust pipe 5 are staggered in a cross shape, and a plurality of forming shells 4 are fixedly provided on the upper end of the forming mold 1.

[0023] The molded shell 4 is located between the corresponding transverse exhaust pipe 6 and longitudinal exhaust pipe 5. The transverse exhaust pipe 6 and longitudinal exhaust pipe 5 are thin-walled, and multiple groups of exhaust holes 7 are evenly spaced on the outside of the transverse exhaust pipe 6 and longitudinal exhaust pipe 5.

[0024] By setting the exhaust holes 7 on the horizontal exhaust pipe 6 and the longitudinal exhaust pipe 5, when the plate is directly covered on the forming mold 1, the bubbles that have not escaped between the forming mold 1 and the plate can be effectively eliminated, and the bubbles that have not escaped in time can be extracted, which greatly improves the product quality of the blister tray and reduces the defective products.

[0025] A fixing plate 8 is fixed on the inner side of the forming mold 1, and an airbag 9 is fixed on the lower end of the fixing plate 8. The airbag 9 is connected through the fixing plate 8. Multiple ventilation holes 801 are opened through one end of the airbag 9 and the fixing plate 8 to facilitate air circulation.

[0026] An exhaust pipe 2 is provided at the lower end of the forming mold 1, and the lower end of the exhaust pipe 2 is connected to an exhaust pump. The exhaust pump is not shown in the figure and is a prior art, so no further description is given here. A three-way pipe 201 is provided on the inside of the forming mold 1. The exhaust pipe 2 is connected to the three-way pipe 201. The exhaust range is increased through the three-way pipe 201. The three-way pipe 201 passes through the airbag 9 and the fixed plate 8. A plurality of sealing rings 10 are fixed on the upper end of the fixed plate 8. The sealing rings 10 are fixedly and sealed to the corresponding three-way pipes 201.

[0027] By setting the airbag 9, after the blister tray is formed, after the exhaust pipe 2 stops exhausting, the airbag 9 expands due to the decrease in air pressure in the forming mold 1, increasing the air pressure in the forming mold 1, and then squeezing the sheet material entering the exhaust hole 7, making it easier to unload the sheet material after it is formed into a blister tray.

[0028] The inner side of the forming die 1 is sealed to ensure that the gas can only flow through the exhaust hole 7.

[0029] Working principle: The operator turns on the vacuum pump, so that the air pump exhausts the interior of the forming mold 1 through the vacuum pipe 2. The vacuum pipe 2 exhausts the interior of the forming mold 1 through the setting of the three-way pipe 201 to increase the vacuum range and prevent the occurrence of vacuum dead corners. Then, the heated plate is vacuumed through another set of vacuum pumps to soften the heated plate and press it against the forming mold 1 and the forming shell 4 to wait for the plate to cool down.

[0030] When the three-way pipe 201 is evacuated, the air pressure in the forming mold 1 is reduced. Through the setting of the vent hole 801, the air bag 9 is compressed by the low air pressure, and the air pressure inside the air bag 9 is increased. After the sheet is formed, all the air pumps are turned off, thereby increasing the air pressure in the forming mold 1, and then the air bag 9 is restored to its original shape, thereby increasing the air pressure in the forming mold 1, and then the sheet entering the exhaust hole 7 is squeezed out by the air pressure, thereby completing the forming and unloading of the blister tray;

[0031] The increase in gas pressure means that the distance between gas molecules in the gas decreases, and the decrease in gas pressure means that the distance between gas molecules increases;

[0032] Furthermore, because the plate enters the interior of the exhaust hole 7, a plurality of convex points are protruded from the surface of the blister tray, thereby preventing the objects carried by the blister tray from moving when the blister tray is in use, thereby achieving an interception effect.

Claims

1. A molding die with a defoaming structure, characterized in that: The invention comprises a hollow forming die (1), wherein a plurality of rows of longitudinal exhaust pipes (5) are fixedly provided on the upper end of the forming die (1), a transverse exhaust pipe (6) is fixedly provided on the upper end of the forming die (1), the transverse exhaust pipes (6) and the longitudinal exhaust pipes (5) are arranged in a staggered manner, and a plurality of forming shells (4) are fixedly provided on the upper end of the forming die (1); the forming shells (4) are located between the corresponding transverse exhaust pipes (6) and longitudinal exhaust pipes (5), and a plurality of exhaust holes (7) are evenly spaced on the outer sides of the transverse exhaust pipes (6) and the longitudinal exhaust pipes (5).

2. The forming mold with a defoaming structure according to claim 1, characterized in that: A fixing plate (8) is fixedly provided on the inner side of the forming die (1), an air bag (9) is fixedly provided on the lower end of the fixing plate (8), and a plurality of ventilation holes (801) are provided through one end of the air bag (9) and the fixing plate (8).

3. The forming mold with a defoaming structure according to claim 2, characterized in that: An exhaust pipe (2) is provided at the lower end of the forming die (1), a three-way pipe (201) is provided inside the forming die (1), the exhaust pipe (2) is connected to the three-way pipe (201), the three-way pipe (201) passes through the air bag (9) and the fixed plate (8), and a plurality of sealing rings (10) are fixedly provided at the upper end of the fixed plate (8), and the sealing rings (10) are fixedly and sealingly connected to the corresponding three-way pipes (201).

4. The forming mold with a defoaming structure according to claim 1, characterized in that: A sealing plate (3) is fixedly provided at the upper end of the forming die (1).

5. The forming mold with a defoaming structure according to claim 1, characterized in that: The inner side of the forming die (1) is sealed.

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