Hot pressing device

Abstract

The utility model discloses a hot pressing device which comprises a first supporting piece, a second supporting piece, a third supporting piece, a fourth supporting piece and a fourth supporting piece, the first supporting piece is connected with a top plate through a first driving assembly, and the first driving assembly is used for driving the top plate to move in the vertical direction; the upper mold is arranged at the bottom of the top plate; the heating mechanism is connected with the upper mold and is used for heating the upper mold; the upper surface of the machining table is connected with the first supporting piece through a second supporting piece; the processing table is hollow; the lower die penetrates through the top of the machining table, and the bottom of the lower die is located in the machining table; according to the utility model, the paper film is heated and dried by closing the upper die and the lower die, then the lower die is cooled by the cooling assembly, and according to the principle of thermal expansion and cold contraction, the paper film in the lower die can be adsorbed on the upper die, so that the paper film in the lower die can be cooled by the cooling assembly. And the upper mold can drive the tableware to be separated from the lower mold.

Description

Technical Field

[0001] The utility model relates to the technical field of paper-plastic tableware processing, in particular to a hot pressing device. Background Art

[0002] Pulp molded tableware is a general term for tableware made of plant fibers. Pulp molded tableware is an environmentally friendly alternative to foamed plastic tableware due to its degradability. Existing pulp molded tableware production equipment includes a wet blank forming mechanism, a wet blank transfer mechanism, a hot pressing mechanism, and a trimming mechanism. During the production process, the wet blank transfer mechanism transfers the paper mold wet blank from the wet blank forming mechanism to the hot pressing mechanism, and then the upper and lower molds of the hot pressing mechanism are combined to perform hot pressing shaping and cooling separation on the paper mold wet blank.

[0003] For example, a forming mold for paper-plastic tableware disclosed in Chinese patent application No. 202320932355.7 includes a top plate and a base, and the top plate and the base are connected by a plurality of connecting columns, a heating section is provided on the upper surface of the base, and a lower mold is detachably provided at the upper end of the heating structure, a hydraulic cylinder is installed in the middle of the upper end of the top plate, and a connecting piece fixedly connected to the top plate is provided at the lower end of the hydraulic cylinder, the output end of the hydraulic cylinder passes through the connecting piece and extends to the bottom of the top plate and is fixedly connected to the connecting piece, and the output end of the top plate is detachably connected to the upper mold through the connecting piece. The utility model can heat different types of tableware molds through the heating structure provided, and the mold as a whole adopts a detachable design, which is simple to replace and easy to use. The hydraulic cylinder can realize convenient mold closing and mold separation, and is equipped with an air-drying structure to quickly dry the product and improve the efficiency of product production.

[0004] However, in the above technical solution, after the wet paper film is heated in the lower mold, the air-drying structures on both sides of the heating box blow air to cool and dry the paper film, and move away from it according to thermal expansion and contraction. This will cause the paper film to shrink in the lower mold. When the upper mold and the lower mold are then closed to separate the product, the size of the paper film is smaller than the upper mold. When the upper mold is closed with the lower mold, the upper mold will wrinkle the paper film, which will cause the hot pressing molding to fail on the one hand, and the paper film will not be adsorbed on the upper mold, and the paper film cannot be separated from the lower mold by the upper mold. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a hot pressing device.

[0006] The technical solution adopted by the utility model is: a hot pressing device, comprising: a first support member, the first support member is connected to a top plate through a first driving component, and the first driving component is used to drive the top plate to move in a vertical direction; an upper mold, the upper mold is arranged at the bottom of the top plate; a heating mechanism, the heating mechanism is connected to the upper mold, and is used to heat the upper mold; a processing table, the upper surface of the processing table is connected to the first support member through a second support member; the processing table is hollow; a lower mold, the lower mold is passed through the top of the processing table, and the bottom of the lower mold is located in the processing table; a cooling mechanism, the cooling mechanism is arranged inside the processing table, and the cooling mechanism is used to cool the lower mold.

[0007] Preferably, the heating mechanism includes: a heating element, which is hollowly arranged in the upper mold and is arranged on the inner wall of the upper mold; a heating power supply, which is arranged above the first support member; and the heating element and the heating power supply are connected by a cable.

[0008] Preferably, the upper mold is detachably connected to the top plate:

[0009] A fixing column is provided on at least one side of the top of the upper mold; a through hole is provided on the top plate, and one end of the fixing column passes through the through hole and extends;

[0010] A first threaded hole is arranged on the side wall of the extended end of the fixing column; a fixing block is arranged on the top plate, the fixing block is located on one side of the first threaded hole, a second threaded hole is opened on the fixing block, and the first threaded hole and the second threaded hole are connected by bolts.

[0011] Preferably, the cooling mechanism includes: a support plate, both sides of which are slidably connected to the inner wall of the processing table; a second drive assembly, which is arranged between the bottom of the processing table and the support plate, and the second drive assembly is used to push the support plate to move in a vertical direction; a water pool, which is arranged on the top of the support plate, and the top of the water pool is an opening, and the water pool is located below the lower mold.

[0012] Preferably, the cooling mechanism also includes: a first water tank, which is arranged on one side of the second drive assembly; a water pump, whose water suction end is connected to the first water tank, and whose water outlet end is connected to one side of the water pool; and a second water tank, which is arranged on the other side of the second drive assembly, and whose second water tank is connected to the other side of the water pool.

[0013] Preferably, a water seal is provided between the support plate and the inner wall of the processing table.

[0014] The beneficial effects of the utility model are as follows: the first driving component drives the upper mold to descend, the upper mold and the lower mold are closed, the heating mechanism is started, the heating mechanism heats the upper mold, the temperature of the upper mold increases to heat and dry the paper film, and then the lower mold is cooled by the cooling component. According to the principle of thermal expansion and contraction, the paper film in the lower mold will be adsorbed on the upper mold, and the upper mold can drive the tableware to separate from the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model from a left-side perspective;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model from a right-side viewing angle;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure inside the processing table of an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the heating mechanism of an embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure in which the upper mold and the top plate are detachably connected in an embodiment of the utility model;

[0020] Figure 6 It is a schematic diagram of the structure of the cooling mechanism of an embodiment of the utility model;

[0021] Figure 7 This is a schematic structural diagram of the first water tank and the water pump according to an embodiment of the utility model.

[0022] Figure numerals: 1. first support member; 2. first drive assembly; 3. top plate; 31. through hole; 32. fixed block; 4. upper mold; 41. fixed column; 5. heating mechanism; 51. heating member; 52. heating power supply; 52. cable; 6. processing table; 7. support member; 8. lower mold; 9. cooling mechanism; 91. support plate; 92. second drive assembly; 93. water pool; 94. first water tank; 95. water pump; 96. second water tank; 10. bolt. DETAILED DESCRIPTION

[0023] In order to make the purpose, scheme and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0024] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0025] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0027] Example:

[0028] like Figure 1-Figure 3 As shown, a hot pressing device includes: a first support member 1, wherein the first support member 1 is connected to a top plate 3 through a first driving component 2, and the first driving component 2 is used to drive the top plate 3 to move in a vertical direction; an upper mold 4, wherein the upper mold 4 is arranged at the bottom of the top plate 3, and a heating mechanism 5, wherein the heating mechanism 5 is connected to the upper mold 4 and is used to heat the upper mold 4; a processing table 6, wherein the upper surface of the processing table 6 is connected to the first support member 1 through two support members 7; the processing table 6 is hollow; a lower mold 8, wherein the lower mold 8 is passed through the top of the processing table 6, and the bottom of the lower mold 8 is located in the processing table 6; a cooling mechanism 9, wherein the cooling mechanism 9 is arranged inside the processing table 6, and the cooling mechanism is used to cool the lower mold 8.

[0029] Among them, the first support member 1 can be a support platform, and the first driving member 2 includes a cylinder and a piston rod. The cylinder is arranged above the support platform, one end of the piston rod passes through the support platform and is connected to the output end of the cylinder, and the other end of the piston cylinder is connected to the top plate 3. The cylinder can drive the piston rod to drive the top plate 3 to move up and down.

[0030] After the wet blank transfer mechanism transfers the wet paper film blank to the lower mold 8, the working process of the hot pressing device in this embodiment is: the cylinder drives the piston rod to drive the top plate 3 to descend, and the upper mold 4 located at the bottom of the top plate 3 descends until the upper mold 4 and the lower mold 8 are closed, and the heating mechanism 5 is started. The heating mechanism 5 heats the upper mold 4, and the temperature of the upper mold 4 increases to heat and dry the wet paper film blank, and then the lower mold 8 is cooled by the cooling mechanism 9. According to the principle of thermal expansion and contraction, the paper film in the lower mold 8 will be adsorbed on the upper mold, and the upper mold can drive the paper film to separate from the lower mold.

[0031] like Figure 4 As shown, in a possible implementation manner, the heating mechanism 5 includes:

[0032] A heating element 51 is hollowly arranged in the upper mold 4 and is arranged on the inner wall of the upper mold 4 ; a heating power source 52 is arranged above the first support member 1 ; the heating element 51 and the heating power source 52 are connected via a cable 53 .

[0033] Among them, the heating element 51 can be a heating plate or a heating tube. When heating is needed, the heating element 51 is started by the heating power supply 52. ​​The temperature of the heating element 51 increases, and the temperature of the upper mold 4 increases accordingly. The upper mold 4 and the lower mold 8 are combined for heating to form a closed cavity, which is beneficial to shorten the heating time.

[0034] like Figure 5 As shown, considering that the heating element 51 may be damaged, it is necessary to remove the upper mold 4 and replace the damaged heating element 51 inside it. In a possible embodiment, the upper mold 4 is detachably connected to the top plate 3: a fixing column 41 is provided on at least one side of the top of the upper mold 4; a through hole 31 is provided on the top plate 3, and one end of the fixing column 41 passes through the through hole 31 and extends; a first threaded hole (not shown) is provided on the side wall of the extended end of the fixing column 41; a fixing block 32 is provided on the top plate 3, and the fixing block 32 is located on one side of the first threaded hole (not shown), and a second threaded hole (not shown) is provided on the fixing block 32, and the first threaded hole (not shown) and the second threaded hole (not shown) are connected by bolts 10.

[0035] The replacement process is as follows: by twisting the bolt 10, the bolt 10 is separated from the first threaded hole. At this time, the bolt 10 remains in the second threaded hole, which can prevent the bolt 10 from being lost due to being thrown away at will. The fixing column 41 can be detached from the through hole 31, and the upper mold 4 can be removed. After replacing the damaged heating element 51 in the upper mold 4, the fixing column 41 on the top of the upper mold 4 is inserted into the through hole 31 of the top plate 3, and then the bolt 10 is screwed into the first threaded hole, and the upper mold 4 is fixed to the bottom of the top plate 3.

[0036] like Figure 6 As shown, in a possible embodiment, the cooling mechanism 9 includes: a support plate 91, both sides of which are slidably connected to the inner wall of the processing table 6; a second driving component 92, which is arranged between the bottom of the processing table 6 and the support plate 91, and the second driving component 92 is used to push the support plate 91 to move in the vertical direction; a water pool 93, which is arranged on the top of the support plate 91, and the top of the water pool 93 is an opening, and the water pool 93 is located below the lower mold 8.

[0037] Among them, the second driving component 92 includes a motor and a telescopic rod, one end of the telescopic rod is connected to the output end of the motor, and the other end of the telescopic rod is connected to the support plate 91. The motor can drive the telescopic rod to drive the support plate 91 to rise or fall.

[0038] It should be noted that a water seal, such as a water seal gasket, is provided between the support plate 91 and the inner wall of the processing table 6 to prevent water in the pool 93 from leaking from the gap between the support plate 91 and the inner wall of the processing table 6 after splashing out.

[0039] After the wet paper film blank is heated and dried, the working process of this embodiment is as follows: the motor drives the telescopic rod to drive the support plate 91 to rise, and the water pool 93 on the support plate 91 rises accordingly. The water pool 93 stores cold water until the lower mold 8 is immersed in the cold water of the water pool 93. The cold water in the water pool 93 cools the lower mold 8. The cold water in the water pool 93 can quickly and effectively reduce the temperature of the mold. This is because water has a high specific heat capacity and thermal conductivity, and can quickly absorb and conduct the heat of the mold, thereby achieving a rapid cooling effect.

[0040] Considering that as the number of cooling times increases, the temperature of the cold water in the pool 93 will also increase, reducing the cooling effect, so Figure 7As shown, in a possible embodiment, the cooling mechanism 9 also includes: a first water tank 94, which is arranged on one side of the second drive assembly 92; a water pump 95, the water suction end of the water pump 95 is connected to the first water tank 94, and the water outlet end of the water pump 95 is connected to one side of the water pool 93; a second water tank 96, which is arranged on the other side of the second drive assembly 92, and the second water tank 96 is connected to the other side of the water pool 93.

[0041] The first water tank 94 can be connected to an external water source through a water pipe, and the second water tank 96 can be connected to an external water pool through a water pipe. The water in the first water tank 94 is pumped into the water pool 93 through a water pump 95, and the water in the water pool 93 can flow into the second water tank 96, so that the water in the water pool 93 is kept circulating, so that the temperature of the water in the water pool 93 will not gradually increase with the increase in the number of cooling times.

[0042] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A hot pressing device, characterized in that: include: A first support member (1), wherein the first support member (1) is connected to a top plate (3) via a first drive assembly (2), and the first drive assembly (2) is used to drive the top plate (3) to move in a vertical direction; An upper mold (4), wherein the upper mold (4) is arranged at the bottom of the top plate (3); A heating mechanism (5), the heating mechanism (5) being connected to the upper mold (4) and being used to heat the upper mold (4); A processing table (6), wherein the upper surface of the processing table (6) is connected to the first support member (1) via two support members (7); the processing table (6) is hollow; A lower mold (8), wherein the lower mold (8) is inserted into the top of the processing table (6), and the bottom of the lower mold (8) is located inside the processing table (6); A cooling mechanism (9), wherein the cooling mechanism (9) is arranged inside the processing table (6), and the cooling mechanism is used to cool the lower mold (8).

2. A hot pressing device according to claim 1, characterized in that: The heating mechanism (5) comprises: A heating element (51), which is hollowly arranged in the upper mold (4), and the heating element (51) is arranged on the inner wall of the upper mold (4); A heating power source (52), the heating power source (52) being arranged above the first support member (1); the heating member (51) and the heating power source (52) being connected via a cable (53).

3. A hot pressing device according to claim 2, characterized in that: The upper mold (4) is detachably connected to the top plate (3): A fixing column (41) is provided on at least one side of the top of the upper mold (4); a through hole (31) is provided on the top plate (3), and one end of the fixing column (41) passes through the through hole (31) and extends; A first threaded hole is provided on the side wall of the extended end of the fixing column (41); a fixing block (32) is provided on the top plate (3), the fixing block (32) is located on one side of the first threaded hole, a second threaded hole is provided on the fixing block (32), and the first threaded hole and the second threaded hole are connected by a bolt (10).

4. A hot pressing device according to any one of claims 1 to 3, characterized in that: The cooling mechanism (9) comprises: A support plate (91), two sides of which are respectively slidably connected to the inner wall of the processing table (6); a second driving assembly (92), the second driving assembly (92) being arranged between the bottom of the processing table (6) and the supporting plate (91), the second driving assembly (92) being used for pushing the supporting plate (91) to move in a vertical direction; A water pool (93), wherein the water pool (93) is arranged on the top of the support plate (91), the top of the water pool (93) is opened, and the water pool (93) is located below the lower mold (8).

5. A hot pressing device according to claim 4, characterized in that: The cooling mechanism (9) further comprises: A first water tank (94), wherein the first water tank (94) is arranged on one side of the second driving assembly (92); A water pump (95), wherein a water suction end of the water pump (95) is connected to the first water tank (94), and a water discharge end of the water pump (95) is connected to one side of the water pool (93); A second water tank (96), wherein the second water tank (96) is arranged on the other side of the second driving assembly (92), and the second water tank (96) is connected to the other side of the water pool (93).

6. A hot pressing device according to claim 5, characterized in that: A water seal is provided between the support plate (91) and the inner wall of the processing table (6).

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