Molding die device of continuous blow-filling-sealing equipment and continuous blow-filling-sealing equipment

Abstract

The present invention discloses a forming die device of a continuous blow-fill-seal device, which comprises two sets of forming die assemblies. The forming die assemblies each include a plurality of forming dies, and the plurality of forming dies are arranged in a ring. A die-closing forming area is formed between the two sets of forming die assemblies. The forming die includes a first rolling member, and a guiding track cooperating with the first rolling member is arranged inside the forming die assembly. A die-closing positioning convex block is fixedly arranged on one of the guiding tracks, a first die-closing driving member is arranged above the other guiding track, and a second die-closing driving member is arranged below it. A first die-closing convex block is arranged on the first die-closing driving member, and a second die-closing convex block is arranged on the second die-closing driving member. The pressure of the first die-closing driving member is greater than that of the second die-closing driving member. A continuous blow-fill-seal device includes the forming die device of the continuous blow-fill-seal device described above. The structure of the present invention is simple and reliable, which is beneficial to improving the forming quality of containers.

Description

Technical Field

[0001] The present invention relates to the technical field of food and drug packaging equipment, and in particular to a forming die device of a continuous blow-fill-seal equipment and a continuous blow-fill-seal equipment. Background Art

[0002] A continuous blow-fill-seal integrated machine (BFS) can complete a series of technological processes of continuous forming, filling, and sealing of a molten plastic tube blank without cutting. Compared with the traditional reciprocating BFS equipment, the production efficiency can be greatly improved. When the left and right forming dies of the existing continuous blow-fill-seal equipment are closed, the pressure is unstable, and it is easy to occur that the left die (or right die) is over-pushed or the die closing is not in place, resulting in die damage or poor container forming. Moreover, during the container forming stage and the pressure holding stage after forming, the die closing force remains unchanged, which is not conducive to ensuring the forming quality of the container. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a forming die device of a continuous blow-fill-seal equipment with a simple and reliable structure, which is beneficial to improving the forming quality of the container.

[0004] The present invention further provides a continuous blow-fill-seal equipment including the forming die device of the above continuous blow-fill-seal equipment.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A forming die device of a continuous blow-fill-seal equipment includes two sets of forming die components. The forming die components include a plurality of forming dies. The plurality of forming dies are arranged in a ring. A die closing and forming area is formed between the two sets of forming die components. The forming die includes a first rolling member. A guiding track cooperating with the first rolling member is provided inside the forming die component. A die closing positioning convex block is fixedly provided on one of the guiding tracks. A first die closing driving member is provided above the other guiding track, and a second die closing driving member is provided below. A first die closing convex block is provided on the first die closing driving member, and a second die closing convex block is provided on the second die closing driving member. The pressure of the first die closing driving member is greater than the pressure of the second die closing driving member.

[0007] As a further improvement of the above technical solution: The forming die further includes a transmission chain link. Two adjacent transmission chain links are hinged, and a second rolling member is provided on the hinge shaft. A driving wheel and a driven wheel are provided inside the forming die component. The die closing and forming area is located between the driving wheel and the driven wheel. The driving wheel and the driven wheel are both provided with a plurality of transmission parts cooperating with the second rolling member along the circumferential direction.

[0008] As a further improvement of the above technical solution: a transmission gear is installed on the axle of the driving wheel, the transmission gears of the two sets of forming die assemblies are meshed, and one of the transmission gears is connected with a rotary driving part.

[0009] As a further improvement of the above technical solution: at least one driving wheel is connected with an adjusting disc, a plurality of waist-shaped adjusting holes are arranged in the circumferential direction of the transmission gear and / or the adjusting disc, and the transmission gear and the adjusting disc are fixedly connected through fasteners arranged in the waist-shaped adjusting holes.

[0010] As a further improvement of the above technical solution: a tensioning mechanism is arranged on one side of the forming die assembly away from the die closing and forming area, the tensioning mechanism comprises a swing rod, an arc-shaped tensioning block matched with the second rolling part is arranged on the swing rod, and a first elastic part is connected to the swinging end of the swing rod.

[0011] As a further improvement of the above technical solution: the swinging end of the swing rod is sleeved on a guide rod, and the first elastic part is a spring and is sleeved on the guide rod.

[0012] As a further improvement of the above technical solution: a tensioning and positioning assembly is arranged between the arc-shaped tensioning block and the driven wheel, the tensioning and positioning assembly comprises a tensioning shaft, a support guide block matched with the second rolling part and a positioning rolling part located on the side surface of the forming die are arranged on the tensioning shaft.

[0013] As a further improvement of the above technical solution: a guide part is arranged on the transmission link, a second elastic part is arranged between the guide part and the transmission link, a die mounting block is sleeved on the outer periphery of the guide part, a forming die body is arranged on the die mounting block, and the guide part abuts against the forming die body.

[0014] As a further improvement of the above technical solution: both the first die closing driving part and the second die closing driving part are oil cylinders.

[0015] A continuous blow-fill-seal device, comprising the forming die device of the above continuous blow-fill-seal device.

[0016] Compared with the prior art, the advantages of the present invention are as follows: In the forming die device of the continuous blow-fill-seal equipment disclosed by the present invention, the die-closing positioning bumps of one set of forming die components are fixedly installed, and the position where the forming die moves to the die-closing forming area each time is constant. The first die-closing bumps and the second die-closing bumps of the other set of forming die components are movably installed, and the die-closing position can be adjusted according to the strokes of the first die-closing driving member and the second die-closing driving member, which can prevent unstable pressure when the forming dies on the left and right sides are closed, and avoid the situation of over-pushing the left die (or right die) or incomplete die-closing, resulting in die damage or poor product forming; the pressure of the first die-closing driving member is greater than that of the second die-closing driving member, which is convenient for the first die-closing bump to cooperate with the die-closing positioning bump for die forming, and the second die-closing bump to cooperate with the die-closing positioning bump for die pressure holding, which is beneficial to improving the forming quality of the container; during the equipment debugging stage, the first die-closing driving member and the second die-closing driving member respectively drive the first die-closing bump and the second die-closing bump to move to the side away from the die-closing positioning bump, so that the forming dies on the left and right sides are separated from each other when reaching the die-closing forming area, avoiding damage to the forming dies during the equipment running without load, and the structure is simple and reliable.

[0017] The continuous blow-fill-seal equipment disclosed by the present invention includes the forming die device of the continuous blow-fill-seal equipment described above, and thus has the same advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front structural schematic diagram of the present invention.

[0019] Figure 2 is a back structural schematic diagram of the present invention.

[0020] Figure 3 is a structural schematic diagram of the driving wheel and the transmission gear in the present invention.

[0021] Figure 4 is a front structural schematic diagram of the tensioning mechanism in the present invention.

[0022] Figure 5 is a back structural schematic diagram of the tensioning and positioning assembly in the present invention.

[0023] Figure 6 is a top view structural schematic diagram of the tensioning and positioning assembly in the present invention.

[0024] Figure 7 is a three-dimensional structural schematic diagram of the forming die in the present invention.

[0025] Figure 8 is a three-dimensional sectional structural schematic diagram of the forming die in the present invention.

[0026] Figure 9 is a structural schematic diagram of the present invention in the debugging stage.

[0027] The reference numerals in the figure denote: 1, a molding die assembly; 11, a mold clamping and molding area; 2, a molding die; 21, a first rolling member; 22, a transmission link; 23, a second rolling member; 24, a guide member; 25, a molding die body; 26, a second elastic member; 27, a die mounting block; 3, a guide rail; 31, a mold clamping positioning projection; 32, a first mold clamping driving member; 33, a second mold clamping driving member; 34, a first mold clamping projection; 35, a second mold clamping projection; 40, a driving wheel; 41, a driven wheel; 42, a transmission portion; 43, a transmission gear; 44, a rotation driving member; 45, an adjusting disc; 46, an oval adjusting hole; 47, a fastener; 48, a driving gear; 5, a tensioning mechanism; 51, a swing rod; 52, an arc-shaped tensioning block; 53, a first elastic member; 54, a guide rod; 6, a tensioning and positioning assembly; 61, a tensioning shaft; 62, a support guide block; 63, a positioning rolling member. Specific embodiments

[0028] The present invention will be further described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0029] Embodiment 1

[0030] Figures 1 to 9 An embodiment of the molding die device of the continuous blow-fill-seal device of the present invention is shown. The molding die device of the continuous blow-fill-seal device in this embodiment includes two sets of molding die assemblies 1. The molding die assembly 1 includes a plurality of molding dies 2. The plurality of molding dies 2 are arranged in a ring ( Figure 1 , Figure 2 and Figure 9 in order to highlight the mold clamping positioning projection 31, the first mold clamping driving member 32, the second mold clamping driving member 33, the first mold clamping projection 34 and the second mold clamping projection 35, most of the molding dies 2 are hidden), and a mold clamping and molding area 11 is formed between the two sets of molding die assemblies 1. The molding die 2 includes a first rolling member 21 (which can be, for example, a roller, a rolling bearing, etc.). A guide rail 3 that cooperates with the first rolling member 21 is provided inside the molding die assembly 1. A mold clamping positioning projection 31 is fixedly provided on one of the guide rails 3. A first mold clamping driving member 32 is provided on the upper side of the other guide rail 3, and a second mold clamping driving member 33 is provided on the lower side. A first mold clamping projection 34 is provided on the first mold clamping driving member 32, and a second mold clamping projection 35 is provided on the second mold clamping driving member 33. The pressure of the first mold clamping driving member 32 is greater than the pressure of the second mold clamping driving member 33.

[0031] For the forming die device of the continuous blow-filling-sealing equipment, the die-closing positioning convex block 31 of the right forming die assembly 1 is fixedly installed, and the position where the forming die 2 moves to the die-closing forming area 11 each time is constant. The first die-closing convex block 34 and the second die-closing convex block 35 of the left forming die assembly 1 are movably installed, and the die-closing position can be adjusted according to the strokes of the first die-closing driving part 32 and the second die-closing driving part 33, which can prevent unstable pressure when the forming dies 2 on the left and right sides are closed, and avoid the situation that the left die (or right die) is over-pushed or the die-closing is not in place, resulting in die damage or poor product forming; the pressure of the first die-closing driving part 32 is greater than that of the second die-closing driving part 33, which is convenient for the first die-closing convex block 34 to cooperate with the die-closing positioning convex block 31 for die forming, and the second die-closing convex block 35 to cooperate with the die-closing positioning convex block 31 for die pressure holding, which is beneficial to improving the forming quality of the container. For details, see Figure 9 During the equipment debugging stage, the first die-closing driving part 32 and the second die-closing driving part 33 drive the first die-closing convex block 34 and the second die-closing convex block 35 to move to the left respectively, so that the forming dies 2 on the left and right sides are separated from each other when they reach the die-closing forming area 11, avoiding damage to the forming dies 2 during the no-load operation of the equipment, and the structure is simple and reliable.

[0032] Furthermore, in this embodiment, the forming die 2 further includes a transmission link 22. Two adjacent transmission links 22 are hinged and a second rolling part 23 (such as a roller, a rolling bearing, etc.) is provided on the hinge shaft. An active wheel 40 and a driven wheel 41 are provided inside the forming die assembly 1. The die-closing forming area 11 is located between the active wheel 40 and the driven wheel 41. The active wheel 40 and the driven wheel 41 are both provided with a plurality of transmission parts 42 (for details, see Figure 2 and Figure 3 , and the transmission part 42 is preferably in an arc-shaped groove structure) that cooperate with the second rolling part 23 along the circumferential direction. When the forming dies 2 on the left and right sides are closed in the die-closing forming area 11, it is surface-to-surface contact. Compared with other transmission forms, it is easier to achieve the function by using the transmission link 22 to transmit power; two adjacent transmission links 22 are hinged and a second rolling part 23 is provided on the hinge shaft, and the active wheel 40 and the driven wheel 41 drive the second rolling part 23 to move through the transmission part 42, which is beneficial to ensuring the smooth operation of the forming die assembly 1 arranged in a ring shape.

[0033] Further, in this embodiment, a transmission gear 43 is mounted on the axle of the driving wheel 40. The transmission gears 43 of the two forming die assemblies 1 are meshed, and one of the transmission gears 43 is connected to a rotary driving member 44. The rotary driving member 44 can be, for example, a motor. The motor can drive one of the transmission gears 43 to rotate through a driving gear 48 or other transmission means. During operation, the rotary driving member 44 drives the transmission gear 43 to rotate. This transmission gear 43 serves as the driving gear and drives the other meshed transmission gear 43 to rotate. The driving wheel 40 rotates synchronously with the transmission gear 43. Then, through the respective transmission parts 42 in the circumferential direction, the second rolling members 23 are driven to move, and the forming die 2 moves with the second rolling members 23. This is beneficial to keeping the left and right forming die assemblies 1 running synchronously. The structure is simple, compact, occupies less space, and has high reliability.

[0034] As a preferred embodiment, at least one driving wheel 40 is connected to an adjusting disc 45. A plurality of oval adjusting holes 46 are provided in the transmission gear 43 and / or the adjusting disc 45 in the circumferential direction. The transmission gear 43 and the adjusting disc 45 are fixedly connected through a fastening member 47 disposed in the oval adjusting holes 46. During the assembly stage, by relatively rotating the driving wheel 40 and the adjusting disc 45, the relative position of the driving wheel 40 and the transmission gear 43 in the circumferential direction can be changed. Then, the relative position of the transmission gear 43 and the adjusting disc 45 is fixed through the fastening member 47, so as to ensure that the relative positions of the driving wheels 40 and the transmission gears 43 in the circumferential direction in the left and right forming die assemblies 1 are the same, ensuring the synchronous operation of the left and right forming die assemblies 1. The structure is simple, reliable, and convenient to adjust.

[0035] Further, in this embodiment, a tensioning mechanism 5 is provided on the side of the forming die assembly 1 away from the die closing and forming area 11. The tensioning mechanism 5 includes a swing rod 51. An arc-shaped tensioning block 52 cooperating with the second rolling member 23 is provided on the swing rod 51. The swinging end of the swing rod 51 is connected to a first elastic member 53. The chain composed of a plurality of transmission chain links 22 is in a tensioned state when in the die closing and forming area 11, and is in a relaxed state when in a position parallel to the die closing and forming area 11. Without tensioning, when the chain moves from the relaxed state to the die closing and forming area 11, it is easy to cause interference to the forming die assembly 1 and prevent it from operating. By providing the tensioning mechanism 5 on the side of the forming die assembly 1 away from the die closing and forming area 11, the polygon effect of the chain drive can be eliminated, ensuring the smooth operation of the forming die assembly 1. Specifically: The arc-shaped tensioning block 52 is always in close contact with the second rolling member 23. Through the swinging of the swing rod 51 and the telescopic movement of the first elastic member 53, the chain is always kept in a tensioned state. The structure is simple and effective.

[0036] As a preferred embodiment, the swinging end of the swing rod 51 is sleeved on a guide rod 54, and the first elastic member 53 is a spring and is sleeved on the guide rod 54. When the second rolling member 23 moves along the arc-shaped tensioning block 52, the arc-shaped tensioning block 52 is squeezed, driving the swing rod 51 to swing, and the swing rod 51 further compresses the first elastic member 53. After the second rolling member 23 separates from the arc-shaped tensioning block 52, under the elastic force of the first elastic member 53, the swing rod 51 resets. The guide rod 54 can provide a guiding function for the swing rod 51 and at the same time prevent the first elastic member 53 from being distorted after being squeezed. The structure is simple and reliable.

[0037] Furthermore, in this embodiment, a tensioning and positioning assembly 6 is provided between the arc-shaped tensioning block 52 and the driven wheel 41. The tensioning and positioning assembly 6 includes a tensioning shaft 61. A support and guide block 62 cooperating with the second rolling member 23 and a positioning rolling member 63 (such as a roller, a rolling bearing, etc.) located on the side of the forming die 2 (specifically, the side of the die mounting block 27) are provided on the tensioning shaft 61. The support and guide block 62 provides support and guiding functions for the second rolling member 23 to keep the chain tensioned, and the positioning rolling member 63 positions the forming die 2 to keep the position of the forming die 2 consistent during movement, which is beneficial to further improving the smoothness and reliability of the operation of the forming die assembly 1.

[0038] Further, in this embodiment, a guide member 24 is provided on the transmission link 22. A second elastic member 26 (preferably, the second elastic member 26 also uses a spring) is provided between the guide member 24 and the transmission link 22. The outer periphery of the guide member 24 is sleeved with a die mounting block 27, and a forming die body 25 is provided on the die mounting block 27. The guide member 24 abuts against the forming die body 25. When the forming dies 2 on the left and right sides are closed, the forming die bodies 25 abut against each other and compress the second elastic member 26 through the guide member 24, effectively preventing the forming dies 2 from being damaged due to other factors when closing. After the forming dies 2 leave the mold closing and forming area 11, the second elastic member 26 drives the die mounting block 27 and the forming die body 25 to reset, and so on in a cycle.

[0039] As a preferred embodiment, both the first mold closing driving member 32 and the second mold closing driving member 33 are oil cylinders. Correspondingly, the oil pressure of the oil cylinder serving as the first mold closing driving member 32 is greater than the oil pressure of the oil cylinder serving as the second mold closing driving member 33. The oil cylinder technology is mature and reliable and can provide sufficient mold closing pressure. Of course, in other embodiments, other components can also provide the mold closing pressure.

[0040] Embodiment Two

[0041] The continuous blow molding, filling and sealing equipment of this embodiment includes the forming die device of the above-mentioned continuous blow molding, filling and sealing equipment.

[0042] The continuous blow-fill-seal device of this embodiment includes the molding die device of the continuous blow-fill-seal device described above, and thus has the same advantages as above.

[0043] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A forming die device of a continuous blow-fill-seal equipment, comprising two groups of forming die assemblies (1), the forming die assemblies (1) each include a plurality of forming dies (2), the plurality of forming dies (2) are arranged in a ring shape, and a die-closing forming area (11) is formed between the two groups of forming die assemblies (1), characterized in that: The forming die (2) includes a first rolling member (21). A guiding track (3) that cooperates with the first rolling member (21) is provided inside the forming die assembly (1). A mold-closing positioning bump (31) is fixedly provided on one of the guiding tracks (3), a first mold-closing driving member (32) is provided on the upper side of the other guiding track (3), and a second mold-closing driving member (33) is provided on the lower side. A first mold-closing bump (34) is provided on the first mold-closing driving member (32), and a second mold-closing bump (35) is provided on the second mold-closing driving member (33). The pressure of the first mold-closing driving member (32) is greater than the pressure of the second mold-closing driving member (33). The forming die (2) further includes a transmission link (22). Two adjacent transmission links (22) are hinged, and a second rolling member (23) is provided on the hinge shaft. A driving wheel (40) and a driven wheel (41) are provided inside the forming die assembly (1). The mold-closing forming area (11) is located between the driving wheel (40) and the driven wheel (41). A plurality of transmission parts (42) that cooperate with the second rolling member (23) are provided on the driving wheel (40) and the driven wheel (41) along the circumferential direction. A tensioning mechanism (5) is provided on one side of the forming die assembly (1) away from the mold-closing forming area (11). The tensioning mechanism (5) includes a swing rod (51). An arc-shaped tensioning block (52) that cooperates with the second rolling member (23) is provided on the swing rod (51). The swinging end of the swing rod (51) is connected with a first elastic member (53). The first rolling member (21) is a roller or a rolling bearing.

2. The forming die device of the continuous blow-fill-seal equipment according to claim 1, characterized in that: A transmission gear (43) is installed on the axle of the driving wheel (40). The transmission gears (43) of the two forming die assemblies (1) are meshed, and one of the transmission gears (43) is connected with a rotation driving member (44).

3. The forming die device of the continuous blow-fill-seal equipment according to claim 2, characterized in that: At least one driving wheel (40) is connected with an adjusting disc (45). A plurality of waist-shaped adjusting holes (46) are provided on the transmission gear (43) and / or the adjusting disc (45) along the circumferential direction. The transmission gear (43) and the adjusting disc (45) are fixedly connected by a fastener (47) arranged in the waist-shaped adjusting hole (46).

4. The forming die device of the continuous blow-fill-seal equipment according to any one of claims 1 to 3, characterized in that: The swinging end of the swing rod (51) is sleeved on a guiding rod (54). The first elastic member (53) is a spring and is sleeved on the guiding rod (54).

5. The forming die device of the continuous blow-fill-seal equipment according to any one of claims 1 to 3, characterized in that: A tensioning positioning assembly (6) is provided between the arc-shaped tensioning block (52) and the driven wheel (41). The tensioning positioning assembly (6) includes a tensioning shaft (61). A supporting guiding block (62) that cooperates with the second rolling member (23) and a positioning rolling member (63) located on the side of the forming die (2) are provided on the tensioning shaft (61).

6. The forming die device of the continuous blow-fill-seal equipment according to any one of claims 1 to 3, characterized in that: A guiding member (24) is provided on the transmission link (22), a second elastic member (26) is provided between the guiding member (24) and the transmission link (22), a mold mounting block (27) is sleeved on the outer periphery of the guiding member (24), a molding die body (25) is provided on the mold mounting block (27), and the guiding member (24) is in contact with the molding die body (25).

7. The forming die device of the continuous blow-fill-seal equipment according to any one of claims 1 to 3, characterized in that: Both the first mold clamping driving member (32) and the second mold clamping driving member (33) are oil cylinders.

8. A continuous blow-fill-seal device, characterized in that: A molding die device of a continuous blow-filling-sealing device according to any one of claims 1 to 7 is included.

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