Molding machine for slurry products

Abstract

A forming machine for slurry products, comprising a frame unit defining a slurry fetching area, two hot-pressing areas and two demolding areas, a slurry fetching unit, a lower mold unit, and an upper mold unit. The slurry fetching unit comprises a slurry fetching mold adapted to fetch slurry. The lower mold unit comprises four lower molds capable of moving along an axis direction. The upper mold unit is capable of moving along a moving direction between two reversing positions, and comprises two upper hot-pressing center molds, and two upper hot-pressing transfer molds. By virtue of the aforementioned spatial configuration and the number of molds, the upper mold unit can synchronize the actions of slurry fetching, first hot-pressing and second hot-pressing without waiting during the back-and-forth movement, and thus greatly improve the production efficiency.

Description

Technical Field

[0001] This invention relates to a molding machine, and more particularly to a molding machine for slurry products. Background Technology

[0002] See Figure 1 A molding machine 1 disclosed in Taiwan Patent Publication No. 201328860 mainly includes a flipping suction mechanism 11, a hot pressing upper mold 12 and a material transfer mold 13 that are spaced apart from the flipping suction mechanism 11 and can be raised and lowered in a vertical direction, a waiting space 14 formed between the hot pressing upper mold 12 and the flipping suction mechanism 11, and a first hot pressing lower mold 15 and a second hot pressing lower mold 16 that can move relative to the flipping suction mechanism 11 in a horizontal direction.

[0003] In this way, the first hot-pressing lower die 15 and the second hot-pressing lower die 16 can be stopped in three positions in sequence: below the flipping and sucking mechanism 11, below the waiting space 14, below the first hot-pressing upper die 12, and below the material transfer die 13, so as to achieve the purpose of transferring the pulp blank and two secondary hot-pressing.

[0004] However, while patent application No. 201328860 can increase production capacity by setting up two upper hot-pressing dies 12, two material transfer dies 13, two first lower hot-pressing dies 15, and two second lower hot-pressing dies 16, the first lower hot-pressing dies 15 and the second lower hot-pressing dies 16 must remain in three positions to achieve the purposes of slurry scooping, hot pressing, and demolding. Therefore, there is still room for improvement in shortening process time. Furthermore, the two sets of dies operate independently, and the use of two sets of drive devices results in disadvantages such as more components and higher equipment costs. Summary of the Invention

[0005] The purpose of this invention is to provide a molding machine for slurry products that can shorten the process, improve production efficiency, simplify components, and reduce equipment costs.

[0006] The molding machine for slurry products of the present invention includes a frame unit, a slurry scooping unit, a lower mold unit, and an upper mold unit.

[0007] The frame unit defines a slurry skimming area, two hot pressing areas located on both sides of the slurry skimming area, and two demolding areas, each of the demolding areas being located on the side of the corresponding hot pressing area away from the slurry skimming area.

[0008] The slurry skimming unit is located in the slurry skimming area and includes a slurry tank suitable for containing slurry and a slurry skimming mold that can move relative to the slurry tank along an axial direction. The slurry skimming mold is suitable for skimming slurry to form a preliminary blank unit.

[0009] The lower mold unit is disposed on the frame unit and includes four lower molds respectively disposed on the hot pressing zone and the demolding zone and capable of moving along the axial direction.

[0010] The upper mold unit is disposed on the frame unit and spaced apart from the lower mold unit along the axial direction. It includes two upper hot-pressing central molds and two upper hot-pressing transfer molds. The upper mold unit moves between two reversing positions along the moving direction. At each reversing position, one of the upper hot-pressing central molds is located in the slurry skimming area and can engage with the slurry skimming mold to press the initial blank unit, and is suitable for obtaining the initial blank unit from the slurry skimming mold. The other upper hot-pressing central mold is located in one of the hot-pressing areas and can engage with the corresponding lower mold. The initial blank unit is hot-pressed for the first time and is adapted to release the initial blank unit to the corresponding lower mold. One of the upper hot-press transfer molds is located in another hot-pressing area or one of the demolding areas, and the other upper hot-press transfer mold is located in another demolding area or one of the hot-pressing areas. Each of the upper hot-press transfer molds can engage with the corresponding lower mold. The initial blank unit is hot-pressed for the first time and is adapted to be obtained from the corresponding lower mold, or the initial blank unit is hot-pressed for the second time and is adapted to be released to the corresponding lower mold.

[0011] The molding machine for slurry products of the present invention has the slurry scooping zone, the hot pressing zone and the demolding zone arranged along the moving direction, which is substantially perpendicular to the axial direction.

[0012] The molding machine for slurry products of the present invention has a slurry-collecting mold that can move between an engaging position and a disengaged position along the axial direction. In the engaging position, it engages with the corresponding upper hot-pressing central mold, and in the disengaged position, it moves away from the upper mold unit.

[0013] In the molding machine for slurry products of the present invention, each of the lower molds is movable between an engagement position and a disengagement position along the axial direction. When any lower mold located in the hot pressing zone is in the engagement position, it engages with the corresponding upper hot pressing central mold. When any lower mold located in the demolding zone is in the engagement position, it engages with the corresponding upper hot pressing transfer mold. When each lower mold is in the disengagement position, it moves away from the upper mold unit.

[0014] The molding machine for slurry products of the present invention further includes a drive unit, the drive unit comprising five lower drive groups, the lower drive groups being installed in the slurry skimming area, the hot pressing area and the demolding area of ​​the frame unit, each of the lower drive groups having a rod that extends and retracts along the axial direction for driving the slurry skimming mold and the lower mold to move along the axial direction, each of the lower drive groups being a hydraulic cylinder or a pneumatic cylinder.

[0015] The molding machine for slurry products of the present invention further includes five guide column groups in the frame unit. The guide column groups are installed in the slurry skimming area, the hot pressing area and the demolding area. Each guide column group has a plurality of guide columns extending along the axial direction and spaced apart from each other. The slurry skimming mold and the lower mold slide on the guide columns of the guide column group.

[0016] The molding machine for slurry products of the present invention further includes at least one slide rail extending along the moving direction and spanning the slurry scooping area, the hot pressing area and the demolding area, wherein the upper mold unit slides on the slide rail.

[0017] In the molding machine for slurry products of the present invention, one of the upper hot pressing central molds of the upper mold unit is connected to another upper hot pressing central mold, and each upper hot pressing transfer mold is connected to a corresponding upper hot pressing central mold, wherein the upper hot pressing central mold and the upper hot pressing transfer mold move together.

[0018] The molding machine for slurry products of the present invention further includes a drive unit, the drive unit including an upper drive group, the upper drive group being mounted on the frame unit and used to drive the upper mold unit to move along the moving direction, the upper drive group being a hydraulic cylinder, a pneumatic cylinder or a combination of a screw and a motor.

[0019] The beneficial effects of the present invention are as follows: by configuring the space as described above and changing the number of molds, the upper mold unit can simultaneously perform the actions of slurry scooping, first hot pressing and second hot pressing without waiting during the reciprocating movement of the upper mold unit, which is aligned with the slurry scooping mold and the lower molds at different positions, thereby greatly improving production efficiency. Attached Figure Description

[0020] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a front view illustrating a molding machine disclosed in Taiwan Patent Publication No. 201328860;

[0022] Figure 2 This is a front view illustrating an embodiment of the molding machine for slurry products according to the present invention;

[0023] Figure 3 This is a side view of the embodiment described;

[0024] Figure 4 This is a partial perspective view of the embodiment described;

[0025] Figure 5 It is similar to Figure 2 The front view shows a slurry-scooping mold and four lower molds moving along an axial direction to engage with two upper hot-pressing central molds and two upper hot-pressing transfer molds.

[0026] Figure 6 It is similar to Figure 2 The front view shows that the upper hot press central mold and the upper hot press transfer mold move from one reversing position to another reversing position along one moving direction;

[0027] Figure 7 It is similar to Figure 5 The front view, but the positions of the upper hot-pressing central mold and the upper hot-pressing transfer mold are different; and

[0028] Figure 8 This is a flowchart illustrating the transfer sequence of multiple initial blank units in the described embodiment. Detailed Implementation

[0029] See Figure 2 , Figure 3 and Figure 4 An embodiment of the molding machine 1 for slurry products of the present invention includes a frame unit 2, a slurry scooping unit 3, a lower mold unit 4, an upper mold unit 5, and a drive unit 6.

[0030] The frame unit 2 defines a slurry skimming area 21, two hot pressing areas 22 located on both sides of the slurry skimming area 21, and two demolding areas 23. Each demolding area 23 is located on the side of the corresponding hot pressing area 22 away from the slurry skimming area 21. In this embodiment, the slurry skimming area 21, the hot pressing area 22, and the demolding area 23 are arranged along a movement direction X. The frame unit 2 includes five guide post groups 24 and two slide rails 25. The guide post groups 24 are installed in the slurry skimming area 21, the hot pressing area 22, and the demolding area 23, and each guide post group 24 has four guide posts 241 extending along an axis L and spaced apart from each other. The slide rails 25 extend along the movement direction X and cross the slurry skimming area 21, the hot pressing area 22, and the demolding area 23. In this embodiment, the movement direction X is substantially perpendicular to the axis L.

[0031] The slurry skimming unit 3 is disposed in the slurry skimming area 21 and includes a slurry tank 31 suitable for containing slurry, and a slurry skimming mold 32 capable of moving relative to the slurry tank 31 along the axis L. The slurry skimming mold 32 slides against the guide post 241 of the corresponding guide post assembly 24, and is capable of moving along the axis L, and is suitable for skimming slurry to form a preliminary unit I, II, III, IV, V (e.g., ...). Figure 8 ).

[0032] It is worth noting that the technique of scooping slurry from the slurry tank 31 using the slurry scooping mold 32 and dewatering and shaping the slurry is not a technical feature of this case, and those skilled in the art can infer the extended details based on the above description, so no further explanation is needed.

[0033] The lower mold unit 4 includes four lower molds 41 respectively disposed in the hot pressing zone 22 and the demolding zone 23. Each lower mold 41 slides against the guide post 241 of the corresponding guide post group 24 and is able to move along the axis L.

[0034] The upper mold unit 5 is spaced apart from the lower mold unit 4 along the axis L and includes two upper hot-pressing central molds 51 and two upper hot-pressing transfer molds 52. In this embodiment, the upper hot-pressing central molds 51 and the upper hot-pressing transfer molds 52 are arranged along the moving direction X. One of the upper hot-pressing central molds 51 is connected to the other upper hot-pressing central mold 51, and each upper hot-pressing transfer mold 52 is connected to a corresponding upper hot-pressing central mold 51. The upper hot-pressing central molds 51 and the upper hot-pressing transfer molds 52 move together.

[0035] In this embodiment, each of the lower molds 41, each of the upper hot-pressing central molds 51, and each of the upper hot-pressing transfer molds 52 can obtain the initial blank units I, II, III, IV, and V (e.g., ...) through positive or negative pressure airflow. Figure 8 ) or release the initial blank units I, II, III, IV, V (such as Figure 8 (and generates heat through an internal heating structure. Since these are not technical features of this case, and those skilled in the art can infer additional details based on the above description, they will not be described further.)

[0036] The upper mold unit 5 slides on the slide rail 25 and can move in two reversing positions along the moving direction X (e.g., Figure 2 and Figure 6 The upper hot-press central mold 51 is located in the slurry-scouring area 21 at each of the reversing positions, the other upper hot-press central mold 51 is located in one of the hot-pressing areas 22, the other upper hot-press transfer mold 52 is located in the other hot-pressing area 22 or one of the demolding areas 23, and the other upper hot-press transfer mold 52 is located in the other demolding area 23 or one of the hot-pressing areas 22.

[0037] The drive unit 6 includes five lower drive groups 61 and one upper drive group 62.

[0038] The lower drive assembly 61 is installed in the slurry skimming area 21, the hot pressing area 22, and the demolding area 23 of the frame unit 2. Each of the lower drive assemblies 61 can be a hydraulic cylinder or a pneumatic cylinder, and has a rod 611 that extends and retracts along the axis L, for driving the slurry skimming mold 32 and the lower mold 41 to move along the axis L.

[0039] Therefore, the slurry-scooping mold 32 or each of the lower molds 41 can move along the axis L between an engaged position and a disengaged position. When the slurry-scooping mold 32 is in the engaged position, it engages with the corresponding upper hot-pressing central mold 51. When the slurry-scooping mold 32 is in the disengaged position, it moves away from the upper mold unit 5.

[0040] When any lower mold 41 located in the hot pressing zone 22 is in the mating position, it is mated with the corresponding upper hot pressing central mold 51. When any lower mold 41 located in the demolding zone 23 is in the mating position, it is mated with the corresponding upper hot pressing transfer mold 52. When each lower mold 41 is in the disengagement position, it is away from the upper mold unit 5.

[0041] The upper drive assembly 62 is mounted on the frame unit 2 and is used to drive the upper mold unit 5 to move along the moving direction X. In this embodiment, the upper drive assembly 62 has a screw 621 extending along the moving direction X and rotatably mounted on the frame unit 2, and a motor 622 that drives the screw 621 to rotate. The screw 621 is screwed into the upper mold unit 5.

[0042] It should be noted that the upper drive assembly 62 is not limited to the combination of the screw 621 and the motor 622. In other variations of this embodiment, it may also be a hydraulic cylinder or a pneumatic cylinder.

[0043] For ease of explanation, the upper hot-press central mold 51 is distinguished by numbers (A) and (B), the upper hot-press transfer mold 52 by numbers (C) and (D), and the lower mold 41 by numbers (a), (b), (c), and (d). Furthermore, when the rod 611 of each of the lower drive groups 61 extends or retracts, it can drive the corresponding slurry-scooping mold 32 or the corresponding lower mold 41 to rise or fall along the axis L. When the motor 622 drives the screw 621 to rotate, it can drive the upper mold unit 5 to move left or right along the moving direction X. Since those skilled in the art can deduce the extended details from the above description, the operation descriptions of the lower drive groups 61 and the upper drive groups 62 are omitted below.

[0044] Based on the moving sequence of the upper mold unit 5, the manufacturing process of the pulp product is as follows:

[0045] Step 1: Refer to Figure 2 , Figure 5 and Figure 8 When the upper mold unit 5 is located as follows Figure 2 The reversal position is shown below:

[0046] After the slurry-scooping mold 32 scoops up the slurry to form the first preliminary blank unit I, it moves upward to engage with the upper hot-pressing central mold 51(A). At this time, the upper hot-pressing central mold 51(A) will draw the first preliminary blank unit I away from the slurry-scooping mold 32 through a negative pressure airflow, and the slurry-scooping mold 32 will move downward away from the upper mold unit 5 and immerse itself in the slurry tank 31, so that the first preliminary blank unit I remains in the upper hot-pressing central mold 51(A).

[0047] Step 2: Refer to Figure 6 , Figure 7 and Figure 8 When the upper mold unit 5 is composed of Figure 2 The reversing position is moved to Figure 6 Reversal position:

[0048] The lower mold 41(b) moves upward to engage with the upper hot-pressing central mold 51(A) and performs the first hot-pressing of the first blank unit I. Then, the lower mold 41(b) moves downward away from the upper mold unit 5. At this time, the upper hot-pressing central mold 51(A) pushes the first blank unit I with a positive pressure airflow, causing the first blank unit I to detach from the upper hot-pressing central mold 51(A), and the lower mold 41(b) sucks in the first blank unit I with a negative pressure airflow, placing the first blank unit I in the lower mold 41(b).

[0049] After the slurry-scooping mold 32 scoops up the slurry to form the second preliminary blank unit II, it moves upward to engage with the upper hot-pressing central mold 51(B). At this time, the upper hot-pressing central mold 51(B) will draw the second preliminary blank unit II away from the slurry-scooping mold 32 through a negative pressure airflow, and the slurry-scooping mold 32 will move downward away from the upper mold unit 5 and immerse itself in the slurry tank 31, so that the second preliminary blank unit II remains in the upper hot-pressing central mold 51(B).

[0050] Step 3: Refer to Figure 2 , Figure 5 and Figure 8 When the upper mold unit 5 is composed of Figure 6 The reversing position moves again to, as Figure 2 Reversal position:

[0051] The lower mold 41(b) moves upward to engage with the upper hot-press transfer mold 52(C) and performs a second hot-press on the first blank unit I. Then, the lower mold 41(b) moves downward away from the upper mold unit 5. At this time, the lower mold 41(b) pushes the first blank unit I with a positive-pressure airflow, causing the first blank unit I to detach from the lower mold 41(b), and the upper hot-press transfer mold 52(C) draws in the first blank unit I with a negative-pressure airflow, placing the first blank unit I on the upper hot-press transfer mold 52(C).

[0052] The lower mold 41(c) moves upward to engage with the upper hot-pressing central mold 51(B) and performs the first hot-pressing of the second blank unit II. Then, the lower mold 41(c) moves downward away from the upper mold unit 5. At this time, the upper hot-pressing central mold 51(B) pushes the second blank unit II with a positive pressure airflow, causing the second blank unit II to detach from the upper hot-pressing central mold 51(B), and the lower mold 41(c) sucks in the second blank unit II with a negative pressure airflow, placing the second blank unit II in the lower mold 41(c).

[0053] After the slurry-scooping mold 32 scoops up the slurry to form the third preliminary blank unit III, it moves upward to engage with the upper hot-pressing central mold 51(A). At this time, the upper hot-pressing central mold 51(A) will draw the third preliminary blank unit III away from the slurry-scooping mold 32 through a negative pressure airflow, and the slurry-scooping mold 32 will move downward away from the upper mold unit 5 and immerse itself in the slurry tank 31, so that the third preliminary blank unit III remains in the upper hot-pressing central mold 51(A).

[0054] Step 4: Refer to Figure 6 , Figure 7 and Figure 8 When the upper mold unit 5 is composed of Figure 2 The reversing position moves again to Figure 6 Reversal position:

[0055] The lower mold 41(a) moves upward to engage with the upper hot press transfer mold 52(C). Then, the upper hot press transfer mold 52(C) pushes the first blank unit I with positive pressure airflow, causing the first blank unit I to detach from the upper hot press transfer mold 52(C). The lower mold 41(a) sucks up the first blank unit I with negative pressure airflow, so that the first blank unit I is located in the lower mold 41(a), thus completing the demolding.

[0056] It is worth noting that after the initial blank unit I is demolded, it can be transported by manual labor, robotic arms, suction cups or other equipment to perform processes such as edge trimming, defect detection and bagging in sequence.

[0057] The lower mold 41(c) moves upward to engage with the upper hot-press transfer mold 52(D) and performs a second hot-press on the second blank unit II. Then, the lower mold 41(c) moves downward away from the upper mold unit 5. At this time, the lower mold 41(c) pushes the second blank unit II with a positive pressure airflow, causing the second blank unit II to detach from the lower mold 41(c), and the upper hot-press transfer mold 52(D) sucks in the second blank unit II with a negative pressure airflow, placing the second blank unit II on the upper hot-press transfer mold 52(D).

[0058] The lower mold 41(b) moves upward to engage with the upper hot-pressing central mold 51(A) and performs the first hot-pressing of the third blank unit III. Then, the lower mold 41(b) moves downward away from the upper mold unit 5. At this time, the upper hot-pressing central mold 51(A) pushes the third blank unit III with a positive pressure airflow, causing the third blank unit III to detach from the upper hot-pressing central mold 51(A), and the lower mold 41(b) sucks in the third blank unit III with a negative pressure airflow, placing the third blank unit III in the lower mold 41(b).

[0059] After the slurry-scooping mold 32 scoops up the slurry to form the fourth preliminary blank unit IV, it moves upward to engage with the upper hot-pressing central mold 51(B). At this time, the upper hot-pressing central mold 51(B) will draw the fourth preliminary blank unit IV away from the slurry-scooping mold 32 through a negative pressure airflow, and the slurry-scooping mold 32 will move downward away from the upper mold unit 5 and immerse itself in the slurry tank 31, so that the fourth preliminary blank unit IV remains in the upper hot-pressing central mold 51(B).

[0060] Step 5: Refer to Figure 2 , Figure 5 and Figure 8 When the upper mold unit 5 is composed of Figure 6 The reversing position moves again to, as Figure 2 Reversal position:

[0061] The lower mold 41(d) moves upward to engage with the upper hot press transfer mold 52(D). Then, the upper hot press transfer mold 52(D) pushes the second blank unit II with positive pressure airflow, causing the second blank unit II to detach from the upper hot press transfer mold 52(D). The lower mold 41(d) sucks in the second blank unit II with negative pressure airflow, so that the second blank unit II is located in the lower mold 41(d), thus completing the demolding.

[0062] Similarly, after the initial blank unit is demolded, it can be transported by manual labor, robotic arms, suction cups, or other equipment to perform processes such as edge trimming, defect detection, and bagging in sequence.

[0063] The lower mold 41(b) moves upward to engage with the upper hot-press transfer mold 52(C) and performs a second hot-press on the third blank unit III. Then, the lower mold 41(b) moves downward away from the upper mold unit 5. At this time, the lower mold 41(b) pushes the third blank unit III with a positive pressure airflow, causing the third blank unit III to detach from the lower mold 41(b), and the upper hot-press transfer mold 52(C) sucks in the third blank unit III with a negative pressure airflow, placing the third blank unit III on the upper hot-press transfer mold 52(C).

[0064] The lower mold 41(c) moves upward to engage with the upper hot-pressing central mold 51(B) and performs the first hot-pressing of the fourth blank unit IV. Then, the lower mold 41(c) moves downward away from the upper mold unit 5. At this time, the upper hot-pressing central mold 51(B) pushes the fourth blank unit IV with a positive pressure airflow, causing the fourth blank unit IV to detach from the upper hot-pressing central mold 51(B), and the lower mold 41(c) sucks in the fourth blank unit IV with a negative pressure airflow, placing the fourth blank unit IV in the lower mold 41(c).

[0065] After the slurry-scooping mold 32 scoops up the slurry to form the fifth preliminary blank unit V, it moves upward to engage with the upper hot-pressing central mold 51(A). At this time, the upper hot-pressing central mold 51(A) will draw the fifth preliminary blank unit V away from the slurry-scooping mold 32 through a negative pressure airflow, and the slurry-scooping mold 32 will move downward away from the upper mold unit 5 and immerse itself in the slurry tank 31, so that the fifth preliminary blank unit V remains in the upper hot-pressing central mold 51(A).

[0066] This process repeats itself continuously, when the upper mold unit 5 is located as follows: Figure 5 and Figure 7 When the reversing position is shown, the initial blank units I, III, V… with an odd number of forming sequence (1st, 3rd, 5th, 7th, etc.) can sequentially complete the first hot pressing, second hot pressing, and demolding processes. When the upper mold unit 5 is located as shown... Figure 2 and Figure 6 When the reversal position is shown, the second, fourth, sixth, etc. initial blank units II, IV, etc., which are formed in an even number sequence, can also complete the first hot pressing, the second hot pressing, and demolding procedures in sequence.

[0067] It should be noted that the positions of the initial blank units I, II, III, IV, and V during the second hot pressing are not limited to those shown below. Figures 2-8 As shown, all are in the hot-pressing zone 22. In other variations of this embodiment, it can also be as follows: Figure 8 As shown, when the lower mold 41(a) is engaged with the upper hot-press transfer mold 52(C), and the lower mold 41(d) is engaged with the upper hot-press transfer mold 52(D), a second hot pressing is performed in the corresponding demolding area 23. Alternatively, the first and second hot pressing can be performed in the corresponding hot-pressing area 22, and then a third hot pressing can be performed in the corresponding demolding area 23.

[0068] Therefore, by simply changing the engagement time between the upper hot-press transfer mold 52(C) and the corresponding lower mold 41(b) or lower mold 41(a), or by changing the engagement time between the upper hot-press transfer mold 52(D) and the corresponding lower mold 41(c) or lower mold 41(d), the number and position of hot pressing can be determined. For example, by controlling the engagement time between the upper hot-press transfer mold 52(C) and the corresponding lower mold 41(b) to within 6 seconds, the function is simply transfer, aiming to transfer the corresponding initial blank units I, III, and V from the lower mold 41(b) to the upper hot-press transfer mold 52(C). Then, by controlling the engagement time between the upper hot-press transfer mold 52(C) and the corresponding lower mold 41(b) to around 50 seconds, a second hot pressing can be performed. Of course, the engagement time between the upper hot-press transfer mold 52(C) and the corresponding lower mold 41(b) can also be controlled to be around 50 seconds. After the second hot pressing, the engagement time between the upper hot-press transfer mold 52(C) and the corresponding lower mold 41(b) can also be controlled to be around 50 seconds to perform the third hot pressing.

[0069] In addition, the lower mold 41 and the slurry mold 32 can be raised and lowered together or separately to meet actual needs, but this does not affect the first hot pressing, the second hot pressing and demolding procedures. Since those skilled in the art can infer the extended details based on the above description, no further explanation is needed.

[0070] Based on the above explanation, the advantages of the aforementioned embodiments can be summarized as follows:

[0071] This invention enables each preform unit to sequentially undergo a first hot pressing, a second hot pressing, and demolding after forming. Importantly, the upper mold unit 5 only needs to reverse left and right once to remain in two positions, allowing for simultaneous forming, hot pressing, and demolding of up to four preform units. This significantly shortens the process time, and the upper mold unit 5 only requires a single power source (motor 622) and a screw 621 to achieve synchronous movement, simplifying the structure and reducing equipment costs.

[0072] The above description is merely an embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.

Claims

1. A molding machine for slurry products, comprising: The frame unit defines a slurry skimming area; A slurry skimming unit is disposed in the slurry skimming area and includes a slurry tank suitable for containing slurry and a slurry skimming mold capable of moving relative to the slurry tank along an axial direction. The slurry skimming mold is suitable for skimming slurry to form a preliminary blank unit. The lower mold unit is disposed in the frame unit; and The upper mold unit is disposed in the frame unit and is spaced apart from the lower mold unit along the axial direction; Its features are: The frame unit further defines two hot pressing zones located on both sides of the slurry skimming zone, and two demolding zones, each of the demolding zones being located on the side of the corresponding hot pressing zone away from the slurry skimming zone; The lower mold unit includes four lower molds respectively disposed in the hot pressing zone and the demolding zone and capable of moving along the axial direction; The upper mold unit includes two upper hot-pressing central molds and two upper hot-pressing transfer molds. The upper mold unit moves between two reversing positions along the moving direction. At each reversing position, one of the upper hot-pressing central molds is located in the slurry skimming area and can engage with the slurry skimming mold to press the initial blank unit and is suitable for obtaining the initial blank unit from the slurry skimming mold. The other upper hot-pressing central mold is located in one of the hot-pressing areas and can engage with the corresponding lower mold to perform the first hot-pressing of the initial blank unit and is suitable for releasing the initial blank unit to the corresponding lower mold. One of the upper hot-pressing transfer molds is located in the other hot-pressing area or one of the demolding areas, and the other upper hot-pressing transfer mold is located in the other demolding area or one of the hot-pressing areas. Each upper hot-pressing transfer mold can engage with the corresponding lower mold to perform the first hot-pressing of the initial blank unit and is suitable for obtaining the initial blank unit from the corresponding lower mold, or the initial blank unit is performed the second hot-pressing of the initial blank unit and is suitable for releasing the initial blank unit to the corresponding lower mold.

2. The molding machine for slurry products according to claim 1, characterized in that: The slurry skimming zone, the hot pressing zone, and the demolding zone are arranged along the moving direction, which is substantially perpendicular to the axial direction.

3. The molding machine for slurry products according to claim 1, characterized in that: The slurry-scooping mold can move between an engaging position and a disengaged position along the axial direction. In the engaging position, it engages with the corresponding upper hot-pressing central mold, and in the disengaged position, it moves away from the upper mold unit.

4. The molding machine for slurry products according to claim 1 or 3, characterized in that: Each of the lower molds can move between an engagement position and a disengagement position along the axial direction. When any lower mold in the hot pressing zone is in the engagement position, it engages with the corresponding upper hot pressing central mold. When any lower mold in the demolding zone is in the engagement position, it engages with the corresponding upper hot pressing transfer mold. When each lower mold is in the disengagement position, it moves away from the upper mold unit.

5. The molding machine for slurry products according to claim 1, characterized in that: The molding machine for the slurry product also includes a drive unit, which includes five lower drive groups. The lower drive groups are installed in the slurry skimming area, the hot pressing area and the demolding area of ​​the frame unit. Each lower drive group has a rod that extends and retracts along the axial direction to drive the slurry skimming mold and the lower mold to move along the axial direction. Each lower drive group can be a hydraulic cylinder or a pneumatic cylinder.

6. The molding machine for slurry products according to claim 5, characterized in that: The frame unit also includes five guide post groups, which are installed in the slurry skimming area, the hot pressing area and the demolding area. Each guide post group has multiple guide posts that extend along the axial direction and are spaced apart from each other. The slurry skimming mold and the lower mold slide on the guide posts of the guide post groups.

7. The molding machine for slurry products according to claim 1, characterized in that: The frame unit further includes at least one slide rail extending along the moving direction and spanning the slurry-scooping area, the hot-pressing area and the demolding area, and the upper mold unit slides on the slide rail.

8. The molding machine for slurry products according to claim 7, characterized in that: One of the upper hot-pressing central molds of the upper mold unit is connected to the other upper hot-pressing central mold, and each upper hot-pressing transfer mold is connected to the corresponding upper hot-pressing central mold. The upper hot-pressing central mold moves together with the upper hot-pressing transfer mold.

9. The molding machine for slurry products according to claim 7, characterized in that: The molding machine for the slurry product also includes a drive unit, which includes an upper drive assembly. The upper drive assembly is installed on the frame unit and is used to drive the upper mold unit to move along the moving direction. The upper drive assembly can be a hydraulic cylinder, a pneumatic cylinder, or a combination of a screw and a motor.

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