CN221072087U - Blowing demoulding forming machine - Google Patents

Abstract

The utility model relates to the technical field of pulp molding, in particular to a blowing demolding forming machine, which comprises a lower die holder, a forming lower die and an air cavity. The top of die holder is equipped with the shaping lower mould, and the below of shaping lower mould is equipped with the air cavity, and the top opening of air cavity and with shaping lower mould intercommunication, the bottom of air cavity is equipped with the air inlet and is used for leading-in compressed air source, and the air cavity is equipped with the air inlet baffle directly over the air inlet, on the projection plane of horizontal direction, the air inlet baffle covers the air inlet. The utility model utilizes the air inlet baffle to properly shield the air inlet, thereby slowing down the air inlet speed and optimizing the air flow diffusion path, thereby reducing the straight-face impact on the pulp product and solving the problem that the compressed air flow is directly upwards from the air inlet to easily blow the pulp product or blow and deform.

Description

Blowing demoulding forming machine

Technical Field

The utility model relates to the technical field of pulp molding, in particular to a blowing demolding forming machine.

Background

Molding is a method of molding a pasty material under a certain pressure by means of a mold or a die, and is mainly divided into the steps of pulping, pulp preparing, pulping, molding, drying, shaping, post-processing and the like, and products such as paper products, ceramic products and the like can be obtained by molding according to the type of the introduced material.

In a pulp molding machine, pulp is dehydrated and molded to obtain wet blanks by adopting a vacuum adsorption mode, then the pulp is further shaped by thermal pressing of an upper die and a lower die, and a pulp product is adhered to a filter screen on the surface of a die cavity after being shaped in the die, so that demolding work is required to be carried out on the pulp product, and the current common demolding mode is to blow the filter screen under the die cavity, so that the pulp product is blown off the filter screen rapidly.

However, in the actual demolding operation, the air pressure is not well controlled, and the pulp products with different thicknesses and different materials are difficult to be well adapted, so that the light and thin pulp products are often blown or deformed, and great risks are brought to the yield of finished products.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides an air blowing demolding forming machine, which utilizes a simple structure to properly shield an air inlet, so as to slow down the air inlet speed and optimize the air flow diffusion path, thereby reducing the straight-face impact on a pulp product.

According to the air blowing demolding forming machine provided by the embodiment of the utility model, the forming machine comprises a lower die holder, a forming lower die and an air cavity. The upper portion of die holder is concave to be equipped with the air cavity, and the top of die holder is equipped with the shaping lower mould, and the air cavity is located the below of shaping lower mould, and the open-top of air cavity and with shaping lower mould intercommunication, the bottom of air cavity is equipped with the air inlet and is used for leading-in compressed air source, and the air cavity is equipped with the air inlet baffle directly over the air inlet, and the projection of air inlet baffle on the horizontal plane covers the projection of air inlet on the horizontal plane.

The blowing demolding forming machine provided by the embodiment of the utility model has at least the following beneficial effects:

According to the utility model, the air inlet baffle is arranged in the air cavity, the air inlet baffle is not only positioned right above the air inlet, the projection of the air inlet baffle on the horizontal plane covers the projection of the air inlet on the horizontal plane, the air blowing demoulding is usually realized by adopting compressed air flow, the compressed air flow contacts with the air inlet baffle in the upward spraying path of the air inlet and is blocked according to the position and the size design of the air inlet baffle, the flow speed of the air flow is rapidly reduced after the air flow is blocked, component force is formed to spread around along the surface of the air inlet baffle, and finally, the upward air flow is formed at the periphery of the air inlet baffle. Compared with the initial air flow just sprayed out from the air inlet, the air flow blocked by the air inlet baffle has slower obvious flow speed and wider blowing surface, and can provide relatively smaller pressure and wider blowing range, so that the pulp product adhered to the molding lower die cavity is gently blown away, and the problem that the compressed air flow is directly upwards from the air inlet to easily blow or blow and deform the pulp product is solved.

According to some embodiments of the utility model, the air inlet baffle is horizontally arranged, the air inlet baffle is fixedly connected with the bottom wall of the air cavity through a connecting strip, and the connecting strip is arranged on the outer side of the air inlet.

According to some embodiments of the utility model, the intake baffle is a circular flat plate structure, the centerline of the intake baffle being collinear with the centerline of the intake.

According to some embodiments of the utility model, the air intake baffle is provided in the middle of the air chamber in the height direction.

According to some embodiments of the utility model, the bottom wall of the air cavity is provided with a vertical upward support column, and the top surface of the support column is abutted with the bottom wall of the molding lower die.

According to some embodiments of the utility model, the number of support columns is more than two, evenly arranged around the air inlet.

According to some embodiments of the utility model, the number of the air cavities is more than four, and the air cavities are respectively distributed along the length direction and the width direction of the molding lower die, and each air cavity is provided with an air inlet, an air inlet baffle plate and a support column.

According to some embodiments of the utility model, the bottom wall of the lower die holder is perforated to form an air inlet, and the outer bottom wall of the lower die holder is provided with an air inlet pipe communicated with the air inlet.

According to some embodiments of the utility model, the molding lower die comprises a lower die plate and a fixed plate, wherein the fixed plate is arranged between the lower die plate and the lower die holder, the fixed plate is provided with a plurality of air inlet channels, and two ends of each air inlet channel are respectively communicated with the lower die plate and the air cavity.

According to some embodiments of the utility model, the lower die holder is abutted with the fixing plate in the peripheral area of the air cavity, and the lower die holder is provided with at least one circle of sealing rings around the air cavity at the abutting position.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of an assembly of an blow molding machine according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing the installation of a lower die holder and a forming lower die of an air blow demolding forming machine according to an embodiment of the utility model;

Fig. 3 is a schematic structural view of a lower die holder of an air blow molding machine according to an embodiment of the present utility model.

Reference numerals:

An upper die holder 10; forming an upper die 20; a lower die holder 30; forming a lower die 40; a lower die plate 41; a fixing plate 42; an intake passage 43; a guide assembly 50; an air cavity 60; an air inlet 70; an intake baffle 80; an intake pipe 90; a connecting bar 100; a support column 110; a non-slip spacer 120; and a seal ring 130.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, the present embodiment provides an air blowing demolding forming machine, which includes an upper die holder 10, an upper forming die 20, a lower die holder 30, and a lower forming die 40. The upper molding die 20 is arranged on the upper die holder 10, the lower molding die 40 is arranged on the lower die holder 30, the upper molding die 20 corresponds to the lower molding die 40 in position, and the upper die holder 10 is connected with the lower die holder 30 through a vertical guide assembly 50. In pulp molding operation, pulp is first injected into the cavity of the lower molding die 40, and then the upper die holder 10 is driven to drive the upper molding die 20 to move downward along the guide assembly 50 until the upper molding die 20 and the lower molding die 40 are pressed together, during which, moisture in the pulp is pumped away by a vacuum device (not shown) provided on the upper molding die 20, and fibers in the pulp deposit in the cavity of the lower molding die 40 to form a wet blank, and when the wet blank is removed from the cavity, air is blown into the cavity.

Referring to fig. 1 and 2, a molding lower die 40 is mounted on top of a lower die holder 30, an upper portion of the lower die holder 30 is recessed downward to form an air cavity 60, the air cavity 60 is disposed below the molding lower die 40, a top of the air cavity 60 is opened and is communicated with the molding lower die 40, an air inlet 70 is disposed at a bottom of the air cavity 60 for introducing a compressed air source, an air inlet baffle 80 is disposed right above the air inlet 70 in the air cavity 60, and on a projection plane in a horizontal direction, a projection of the air inlet baffle 80 on a horizontal plane covers a projection of the air inlet 70 on the horizontal plane.

In this embodiment, the bottom wall of the lower die holder 30 is perforated to form the air inlet 70, the outer bottom wall of the lower die holder 30 is provided with an air inlet pipe 90 communicating with the air inlet 70, and the air inlet pipe 90 is used for introducing a compressed air source into the air cavity 60. The lower molding die 40 comprises a lower molding plate 41 and a fixing plate 42, the fixing plate 42 is arranged between the lower molding plate 41 and the lower molding plate 30, the lower molding plate 41 is fixedly arranged on the top surface of the lower molding plate 30 through the fixing plate 42, a mold cavity of the lower molding plate 41 is formed by a molding net with a certain mesh, the fixing plate 42 is provided with a plurality of air inlet channels 43, and two ends of the air inlet channels 43 are respectively communicated with the lower molding plate 41 and the air cavity 60.

According to the above-described structure, the compressed air flow enters the inside of the air chamber 60 from the air inlet pipe 90 via the air inlet 70 to form an initial air flow, which is in contact with the air inlet baffle 80 and intercepted by the air inlet baffle 80 during the upward ejection, the flow velocity of the initial air flow is rapidly reduced, and the generated component force spreads around along the bottom surface of the air inlet baffle 80, continues to be emitted upward at the edge of the air inlet baffle 80, and then enters the air inlet passage 43 located above the air chamber 60, and is blown into the cavity of the lower die plate 41 via the air inlet passage 43, thereby exerting an upward impact force on the pulp product adhered to the cavity surface, thereby blowing the pulp product upward.

Referring to fig. 3, the intake baffle 80 is not only located directly above the intake port 70, but the projection of the intake baffle 80 on the horizontal plane covers the projection of the intake port 70 on the horizontal plane. According to the design that the air inlet baffle 80 is positioned right above the air inlet 70, the air inlet baffle 80 is positioned on the injection path of the compressed air flow; and according to the size design that the air inlet baffle 80 covers the air inlet 70 on the horizontal projection plane, the compressed air flow sprayed upwards from the air inlet 70 is basically intercepted by the air inlet baffle 80, so that the strong impact on the pulp product to be demolded caused by the direct upwards impact of the compressed air flow is relieved.

The air inlet baffle 80 is horizontally arranged, because if the air inlet baffle 80 is obliquely designed, initial air flow is likely to be continuously sprayed upwards through the upward-inclined plate surface bottom wall, strong impact can still be formed on the pulp product, and the horizontal air inlet baffle 80 can effectively avoid the risk of side leakage and up-rushing of the air flow, so that compressed air flow is intercepted more effectively.

Further, the intake baffle 80 is a circular flat plate structure, and the center line of the intake baffle 80 is collinear with the center line of the intake port 70. In general, the air inlet 70 will be of a circular design to facilitate adaptation to the conventional air inlet duct 90, so that the initial airflow emitted from the air inlet 70 is generally distributed in a cylindrical shape. In this embodiment, the air inlet baffle 80 adopts a circular plate structure aligned and parallel to the air inlet 70, so that the air inlet baffle 80 can conform to the shape of the initial air flow, and thus contacts with as much initial air flow as possible to reduce the risk of side leakage, and the circular edge has smoother trend compared with other polygons or irregular edges, so that unnecessary blocking of the air flow can be reduced, and excessive loss of the air flow at the edge of the air inlet baffle 80 is prevented, thereby weakening the subsequent blowing demoulding strength.

It should be added that the air inlet baffle 80 is configured in a flat plate structure, not only because the flat plate structure is easy to process and easy to obtain, but also that the flat design meets the requirement of the technical scheme for compressed air flow. Specifically, compared with the downward curved surface or downward bent surface, the flat plate structure can prevent the initial airflow sprayed from the air inlet 70 from reversely blowing, so that the large flowing direction of the airflow is maintained; compared with the upward trend of the curved surface or the upward trend of bending, the flat plate structure can further prevent the initial airflow from generating side leakage, thereby protecting the pulp product from being impacted by the straight surface.

In order to ensure that the air flow can still smoothly finish the air blowing operation after being intercepted by the air inlet baffle 80, the utility model makes limitation on the shape of the air inlet baffle 80 and also considers the setting height of the air inlet baffle 80. In the height direction, the air intake damper 80 is recommended to be disposed in the middle region of the air chamber 60, that is, the air intake damper 80 is not suitably disposed too high or too low. If the air inlet baffle 80 is disposed at the lower portion of the air chamber 60, the air inlet baffle 80 is too close to the air inlet 70, so that the distance from the newly generated air flow to the lower die plate 41 is far after the compressed air flow is intercepted by the air inlet baffle 80, and therefore, during the continuous rising of the air flow, the energy of the air flow is more consumed, which makes it difficult to provide sufficient blowing strength, and further weakens the demolding effect; if the air intake baffle 80 is provided at the upper portion of the air chamber 60, the air intake baffle 80 is spaced far from the air intake 70, and it is difficult to ensure effective interception of the compressed air flow.

With continued reference to fig. 3, the air inlet baffle 80 is fixedly connected to the bottom wall of the air chamber 60 by a connecting strip 100, and the connecting strip 100 is disposed outside the air inlet 70 so as not to affect the ejection of the compressed air flow. In some cases, the connecting strip 100 may have one end fixedly connected to the edge of the air intake baffle 80, and the other end detachably mounted to the bottom wall of the air cavity 60, for example, by punching, screwing in a bolt, or the like, so as to facilitate replacement of the air intake baffle 80.

In the present embodiment, the number of the air chambers 60 is four, two of which are arranged along the length direction of the molding lower die 40, and the remaining two of which are arranged along the width direction of the molding lower die 40. Because the air cavities 60 are concavely arranged at the upper part of the upper die holder 10, if a plurality or even number of the air cavities 60 are arranged, two adjacent air cavities 60 can be separated by the wall body of the upper die holder 10, thereby the wall body of the upper die holder 10 is relatively in the form of forming reinforcing ribs, and the peripheral side structure of the air cavities 60 is facilitated to be reinforced; in addition, the top surface of the upper die holder 10 needs to be provided with the fixing plates 42, and if the air cavities 60 are arranged at intervals, the fixing plates 42 can be connected with the upper die holder 10 through bolts at the positions of the reinforcing ribs, so that the fixing plates 42 are ensured to have enough mounting points; more importantly, four or more air cavities 60 are provided and each air cavity 60 is provided with an air inlet 70 and an air inlet baffle 80, the multiple air cavities 60 being separated to provide a wider range of air outlets and a more secure strength of air outlets than if only one large integral air cavity 60 were provided under the molding lower die 40.

The bottom wall of each air cavity 60 is provided with more than two support columns 110 which are vertically upwards, the support columns 110 are recommended to be arranged around the central position of the air cavity 60, generally around the air inlet 70, the top surfaces of the support columns 110 are abutted with the bottom wall of the lower molding die 40, and the support columns 110 are used for being abutted with the bottom wall of the fixed plate 42, so that rigid support is provided for the lower molding die 40, and the influence of the lack of support on the core area of the lower molding die 40 caused by the concave arrangement of the air cavity 60 of the lower die holder 30 is offset to a certain extent.

Referring to fig. 2 and 3, the top surface of the support column 110 is provided with a non-slip spacer 120 to reduce the risk of displacement of the fixing plate 42 relative to the support column 110.

The molding lower die 40 is mounted on the top of the lower die holder 30 by means of the fixing plate 42, and the lower die holder 30 is mainly abutted and mounted with the fixing plate 42 in the entire peripheral area of the air chamber 60 except for the above-mentioned air chamber 60 interval position, so that the outer dimension of the air chamber 60 should be smaller than the outer dimension of the lower die plate 41 to leave an abutment position. The top surface of the lower die holder 30 is provided with a plurality of threaded holes, the fixing plate 42 and the lower die plate 41 are correspondingly provided with through holes, and the lower die plate 41 and the fixing plate 42 are mounted on the top of the lower die holder 30 through hole alignment and screwing in mounting bolts (not shown in the figure).

Referring to fig. 3, the lower die holder 30 is provided with at least one ring of sealing ring 130 on the whole periphery of the air cavity 60, and the sealing ring 130 should be located between the mounting bolt and the edge of the air cavity 60, so that when the bolt is screwed in, the sealing ring 130 is compacted by the fixing plate 42, and the sealing ring 130 is provided to prevent the compressed air flow inside the air cavity 60 from leaking out through the fixing plate 42 and the mounting surface of the lower die holder 30, thereby helping to protect the air tightness of the air cavity 60.

In summary, the air inlet baffle is arranged in the air cavity, and the air inlet is properly shielded by utilizing a simple structure, so that the air inlet speed is slowed down, the air flow diffusion path is optimized, the straight-face impact on the pulp product is changed, the pulp product adhered to the cavity of the lower molding die is gently blown away, and the problem that the pulp product is easily blown or deformed due to the fact that compressed air flow is directly upwards from the air inlet is solved.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. The blowing demolding forming machine is characterized by comprising:

The upper part of the lower die holder is concavely provided with an air cavity;

The forming lower die is arranged at the top of the lower die holder, the air cavity is positioned below the forming lower die, the top of the air cavity is opened and communicated with the forming lower die, the bottom of the air cavity is provided with an air inlet for guiding in a compressed air source, the air cavity is provided with an air inlet baffle right above the air inlet, and the projection of the air inlet baffle on the horizontal plane covers the projection of the air inlet on the horizontal plane.

2. The blow molding machine of claim 1, wherein the air inlet baffle is horizontally arranged, the air inlet baffle is fixedly connected with the bottom wall of the air cavity through a connecting strip, and the connecting strip is arranged outside the air inlet.

3. The blow molding machine of claim 2 wherein the intake baffle is a circular flat plate structure, the centerline of the intake baffle being collinear with the centerline of the intake port.

4. The blow molding machine as claimed in claim 1, wherein said air intake baffle is provided in a middle portion of said air chamber in a height direction.

5. The blow molding machine of claim 1, wherein the air cavity bottom wall is provided with a vertically upward support column, the top surface of the support column being in abutment with the molding lower mold bottom wall.

6. The blow molding machine of claim 5 wherein the number of support columns is two or more and is evenly disposed about the air inlet.

7. The blow molding machine of claim 6, wherein the number of air cavities is four or more, and the air cavities are respectively arranged and distributed along the length and width directions of the lower molding die, and each air cavity is provided with the air inlet, the air inlet baffle plate and the support column.

8. The blow molding machine of claim 1, wherein a bottom wall of the lower die holder is perforated to form the air inlet, and an outer bottom wall of the lower die holder is provided with an air inlet pipe communicating with the air inlet.

9. The blowing demolding molding machine of claim 8, wherein the molding lower mold comprises a lower mold plate and a fixing plate, the fixing plate is arranged between the lower mold plate and the lower mold base, the fixing plate is provided with a plurality of air inlet channels, and two ends of each air inlet channel are respectively communicated with the lower mold plate and the air cavity.

10. The blow molding machine of claim 9, wherein the lower die holder abuts the fixed plate at a peripheral region of the air cavity, and wherein the lower die holder is provided with at least one ring of sealing rings around the air cavity at an abutment position.