Handle clamping groove forming mechanism and bottle blowing mold

Abstract

The invention relates to a handle clamping groove forming mechanism and a bottle blowing mold. The handle clamping groove forming mechanism comprises a mold insert. The mold insert is connected with two lugs in a sliding manner, and the two lugs protrude out of the two ends of the mold insert respectively and are provided with forming end parts which are opposite to each other in the axial direction; the mold insert is provided with an air channel, the two lugs are connected to the air channel, and the air channel is configured to drive the two lugs to move back to back or face to face. Compared with the prior art that the two convex lugs are moved through rigid mechanical driving, the two convex lugs are pneumatically driven to move, the bottle blowing mold has the advantages of being simple in structure, small in weight, high in energy efficiency, environmentally friendly, low in production and maintenance cost, rapid in action and response, flexible to control and the like, light weight of the bottle blowing mold can be achieved, and the production cost is reduced. The production cost and the maintenance cost are reduced, and energy conservation and emission reduction are realized.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing, in particular to a handle slot forming mechanism and a bottle blowing mould. Background Art

[0002] During the blow molding process of containers with slots, the blow molding mold needs to realize the molding of the upper and lower slots through two lugs. When the container is blown, the upper and lower lugs extend into the mold cavity respectively to form the slots; after the blow molding is completed, the two lugs retract into the mold cavity respectively to facilitate the removal of the container from the blow molding mold.

[0003] In the prior art, a rigid mechanical drive is usually used to achieve the extension and retraction of the upper and lower lugs.

[0004] It has the following technical problems: Mechanical drive has the disadvantages of complex structure, heavy weight, high energy consumption, high noise, high production and maintenance costs, and difficulty in adjustment. It is not conducive to lightweighting of bottle blowing molds, and it is difficult to reduce production and maintenance costs, which is contrary to the concept of energy conservation and emission reduction.

[0005] In addition, the long-term straight-line high-speed sliding of the two lugs can easily cause wear and breakage of related components, shortening their service life.

[0006] Therefore, targeted improvements are needed. Summary of the invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a handle slot molding mechanism and a bottle blowing mold, which have the advantages of simple structure, light weight, high energy efficiency, environmental friendliness, low production and maintenance costs, rapid action and response, flexible control, etc., which are conducive to achieving lightweight bottle blowing molds and reducing production costs and maintenance costs.

[0008] In order to achieve the above object, the present invention adopts the following technical solution: A handle slot forming mechanism comprises a mold insert; The mold insert is slidably connected with two lugs, which protrude from two ends of the mold insert and have molding ends facing each other in the axial direction; The mold insert is provided with an air path, and the two lugs are respectively connected to the air paths. The air paths are configured to drive the two lugs to move away from each other or towards each other.

[0009] Furthermore, the mold insert is provided with a sliding channel extending along the axial direction and two connecting rods slidably connected to the sliding channel, and the two lugs are respectively fixedly mounted on the two connecting rods, and the connecting rod and the mold insert jointly define a closed space between the relatively distal end of the connecting rod and the mold insert, and between the relatively proximal ends of the connecting rod; the air circuit is connected to the closed space, and is used to drive the two connecting rods to move away from or towards each other.

[0010] Furthermore, the gas path includes a first gas path and a second gas path, the gas outlet end of the first gas path is connected to the middle of the sliding channel, and the gas outlet end of the second gas path is respectively connected to the two ends of the sliding channel.

[0011] Furthermore, the mold insert is provided with a protrusion, and the first air inlet connector and the second air inlet connector are respectively connected to the protrusion, the air inlet end of the first air circuit is connected to the first air inlet connector, and the air inlet end of the second air circuit is connected to the second air inlet connector.

[0012] Furthermore, the lug includes a lug slider, a first guide claw and a lug structure, the first guide claw and the lug structure are respectively connected to the outer side and the inner side of the lug slider, the first guide claw protrudes from the side of the lug slider opposite to the two lugs, the outer side of the lug slider is slidably matched with the inner side of the mold insert, the connecting rod is fixedly installed at the end of the first guide claw facing away from the lug structure, and the lug structure defines the molding end; the mold insert is provided with a guide channel extending axially, and the first guide claw is adapted to slide in the guide channel.

[0013] Furthermore, the inner side surface of the mold insert is provided with two groups of limit block groups which are arranged opposite to each other in the axial direction, each group of limit block groups includes two limit blocks, and the inner side surfaces of the two limit blocks define the guide channel.

[0014] Furthermore, two second guide claws are symmetrically provided on the side facing each other of the two lug sliders, a limit guide block extending axially is provided between the two groups of limit block groups, the width between the two side surfaces of the limit guide block is adapted to the spacing between the two second guide claws, and the limit guide block is slidably connected to the two second guide claws.

[0015] Furthermore, the connecting rod has a connecting hole that penetrates radially, and the outer periphery of the connecting rod has a first recess and a second recess at the penetration position of the connecting hole respectively; the first guide claw is provided with a clamping portion and a connecting tube, and a lug limiting guide hole is provided between the guide channel and the limiting guide block, and the widths of the first recess and the lug limiting guide hole are both adapted to the clamping portion, and the clamping portion passes through the lug limiting guide hole and is clamped to the first recess; corresponding to the two connecting rods, the mold insert is provided with two strip-shaped connecting rod limiting guide holes in sequence along the axial direction; a connecting block is provided in the second recess, the connecting tube passes through the connecting hole and is fixedly connected to the connecting block, and the connecting block is slidably connected to the connecting rod limiting guide hole.

[0016] Furthermore, the limiting surfaces of the limiting block and the limiting guide block are detachably connected with wear-resistant gaskets, the inner side surface of the mold insert is detachably connected with a wear-resistant plate, and the lug slides axially on the wear-resistant plate.

[0017] A bottle blowing mold, comprising a mold cavity and a handle slot molding mechanism; The handle slot forming mechanism is installed in the mold cavity, which has a cavity. When the two lugs of the handle slot forming mechanism move away from or towards each other, the forming ends of the lugs correspondingly protrude into or retract into the cavity.

[0018] In general, the present invention has the following advantages: The present invention sets an air path in the mold insert, and the air path can be connected to a gas pressure source to drive the two lugs to move away from or towards each other. Compared with the prior art that uses a rigid mechanical drive to move the two lugs, the present invention uses pneumatic drive, which has the advantages of simple structure, light weight, high energy efficiency, environmental friendliness, low production and maintenance costs, rapid action and response, flexible control, etc., which is conducive to achieving lightweight bottle blowing molds, reducing production costs and maintenance costs, and achieving energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the handle slot forming mechanism of this embodiment.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the mold insert of this embodiment.

[0021] Figure 3 It is a top view of the handle slot forming mechanism of this embodiment.

[0022] Figure 4 for Figure 3 AA view in.

[0023] Figure 5 It is a bottom view of the handle slot forming mechanism of this embodiment.

[0024] Figure 6 for Figure 5 EE view in .

[0025] Figure 7 for Figure 5 FF view in.

[0026] Figure 8 Schematic diagram of the installation of the connecting rod and the lug of this embodiment.

[0027] Fig. 9 Schematic diagram of the three-dimensional structure of the lug of this embodiment.

[0028] Fig.10 Schematic diagram of the three-dimensional structure of the connecting rod of this embodiment.

[0029] Fig.11 Schematic diagram of the structure of the split connecting rod and the integrated connecting rod of this embodiment.

[0030] Fig.12 Schematic diagram of the internal structure of the bottle blowing mold of this embodiment.

[0031] In the figure: 1-mold insert, 11-sliding channel, 12-first gas path, 13-second gas path, 14-limiting block, 141-guide channel, 15-limiting guide block, 16-wear-resistant gasket, 17-wear-resistant plate, 18-lug limiting guide hole, 19-connecting rod limiting guide hole; 2-lug, 21-lug slider, 22-lug structure, 23-first guide claw, 231-clamping portion, 232-connecting tube, 24-second guide claw; 3-connecting rod, 31-sliding channel, 32-first concave position, 33-second concave position, 331-connecting block, 34-connecting rod body, 35-connecting rod cover, 36-sealing ring; 4-cover plate; 5-bump, 51-first air inlet connector, 52-second air inlet connector; 6-Connector; 7- mold cavity, 71- mold cavity. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below.

[0033] like Figure 1-Figure 7 As shown, a handle slot forming mechanism comprises a mold insert 1; the mold insert 1 is slidably connected to two lugs 2, the two lugs 2 protrude from both ends of the mold insert 1 respectively and have forming ends facing each other in the axial direction; The mold insert 1 is provided with an air path, and the two lugs 2 are respectively connected to the air paths, and the air paths are configured to drive the two lugs 2 to move away from or towards each other. Specifically, the air path is connected to a gas pressure source, and the air pressure provided by the gas pressure source is controlled to drive the two lugs 2 to move away from or towards each other. Compared with the prior art that uses a rigid mechanical drive to move the two lugs 2, the pneumatic drive used in this embodiment has the advantages of simple structure, light weight, high energy efficiency, environmental friendliness, low production and maintenance costs, rapid action and response, and flexible control, which is conducive to achieving lightweight bottle blowing molds, reducing production costs and maintenance costs, and achieving energy conservation and emission reduction.

[0034] like Figure 2 , Figure 8As shown, two lugs 2 facing each other are sequentially arranged on the inner side surface of the mold insert 1 along the axial direction, a sliding channel 11 is arranged inside the mold insert 1 along the axial direction, and two connecting rods 3 are sequentially arranged in the sliding channel 11 along the axial direction for sliding. The two connecting rods 3 are respectively connected to the two lugs 2 in a one-to-one correspondence, and the connecting rods 3 can drive the lugs 2 to slide axially on the inner side surface of the mold insert 1. The connecting rod 3 and the mold insert 1 jointly define a closed space between the relatively distal end of the connecting rod 3 and the mold insert 1, and a closed space between the relatively proximal ends of the two connecting rods 3 (that is, the relatively distal end of the connecting rod 3 and the mold insert 1, and the relatively proximal ends of the connecting rod 3 are all enclosed to form a closed space), and the gas path is connected to the closed space.

[0035] like Figure 6 , Figure 7 As shown, the gas path of the mold insert 1 includes a first gas path 12 and a second gas path 13, the gas outlet end of the first gas path 12 is connected to the middle of the sliding channel 11, and the gas outlet end of the second gas path 13 is respectively connected to the two ends of the sliding channel 11. When the first gas path 12 is under positive pressure, the two connecting rods 3 are pushed from the inside to the outside, so that the two connecting rods 3 slide synchronously and away from each other in the sliding channel 11, and the two lugs 2 slide synchronously and away from each other on the inner side surface of the mold insert 1; when the second gas path 13 is under positive pressure, the two connecting rods 3 are pushed from the outside to the inside, so that the two connecting rods 3 slide synchronously and close to each other in the sliding channel 11, and the two lugs 2 slide synchronously and toward each other on the inner side surface of the mold insert 1.

[0036] like Figure 1 , Figure 4 , Figure 6 , Figure 7 As shown, the outer side surface of the mold insert 1 has a protruding block 5 protruding outward, and the protruding block 5 is respectively connected with a first air inlet connector 51 and a second air inlet connector 52. The air inlet end of the first air path 12 is connected to the first air inlet connector 51, and the air inlet end of the second air path 13 is connected to the second air inlet connector 52. The first air path 12 and the second air path 13 are respectively connected to the gas pressure source through the first air inlet connector 51 and the second air inlet connector 52, so that the first air path 12 and the second air path 13 respectively obtain positive pressure; in implementation, when the first air path 12 or the second air path 13 obtains positive pressure, the second air path 13 and the first air path 12 are correspondingly at negative pressure, so as to better drive the two connecting rods 3 to move.

[0037] like Fig. 9As shown, the lug 2 includes a lug slider 21, a first guide claw 23 and a lug structure 22. The first guide claw 23 and the lug structure 22 are respectively connected to the outer side and the inner side of the lug slider 21. The first guide claw 23 protrudes from the opposite side of the lug slider 21 of the two lugs 2. The outer side of the lug slider 21 is slidably matched with the inner side of the mold insert 1. The connecting rod 3 is fixedly installed at the end of the first guide claw 23 facing away from the lug structure 22. The lug structure 22 defines the molding end. The first guide claw is provided with a clamping portion 231 and a connecting tube 232.

[0038] Specifically, the inner side surface of the mold insert 1 has a lug limiting and guiding structure for limiting and guiding the telescopic movement of the lug 2 to improve the stability of the mold operation.

[0039] like Figure 2 As shown, the lug limit guide structure includes two groups of limit block groups arranged axially opposite to each other, and each group of limit block groups includes two limit blocks 14; the mold insert 1 is provided with a guide channel 141 extending axially, and the inner sides of the two limit blocks 14 define the guide channel 141, and the first guide claw 23 is adapted to slide in the guide channel 141.

[0040] The lug limit guide structure also includes a limit guide block 15 extending axially between the two groups of limit block groups. Two second guide claws 24 are symmetrically provided on the opposite sides of the two lug sliders 21. The width between the two side surfaces of the limit guide block 15 is adapted to the spacing between the two second guide claws 24. The limit guide block 15 is slidably connected to the two second guide claws 24.

[0041] The lug limit guide structure also includes two lug limit guide holes 18 arranged in sequence along the axial direction. The lug limit guide hole 18 extends axially between the guide channel 141 and the limit guide block 15. The lug limit guide hole 18 passes through the connecting hole 31 on the connecting rod 3. The width of the lug limit guide hole 18 is adapted to the clamping portion 231.

[0042] In a specific implementation, the two lug sliders 21 are limited by the limit block group, so that the outer side of the lug 2 can be limited; the two lug sliders 21 are limited by the limit guide block 15, so that the inward movement of the lug 2 can be limited; the clamping portion 231 is limited by the lug limit guide hole 18, so that the outward movement of the lug 2 can be limited, and the sliding stroke of the lug 2 can be limited from multiple angles, thereby ensuring the safety of the movement of the lug 2; By utilizing the sliding cooperation between the first guide claw 23 and the guide channel 141, the sliding cooperation between the two second guide claws 24 and the two side surfaces of the limiting guide block 15, and the sliding cooperation between the clamping portion 231 and the lug limiting guide hole 18, the sliding of the lug 2 is guided from multiple positions, thereby ensuring the axial sliding of the lug 2 and improving the movement accuracy.

[0043] The above multi-angle and multi-position limiting and guiding ensures the smooth movement of the lug 2.

[0044] In order to solve the problem that long-term linear high-speed sliding of the lug 2 easily causes wear and fracture of related parts, such as Figure 1 As shown, in the present invention, wear-resistant gaskets 16 are detachably connected to the limiting surfaces of the limiting block 14 and the limiting guide block 15, respectively. The limiting wear occurs on the wear-resistant gasket 16, and the wear-resistant gasket 16 can be replaced after wear, without replacing the mold insert 1, thereby extending the service life of the mold insert 1 and other related components.

[0045] The inner side of the mold insert 1 is detachably connected to a wear plate 17, and the lug 2 slides axially on the wear plate 17. Since sliding wear occurs on the wear plate 17, the wear plate 17 can be replaced after wear without replacing the mold insert 1, thereby extending the service life of the mold insert 1.

[0046] like Fig.10 As shown, the middle part of the connecting rod 3 has a connecting hole 31 that penetrates radially, and the outer periphery of the connecting rod 3 has a first recess 32 and a second recess 33 at both sides of the connecting hole 31, the first recess 32 is adapted to the clamping portion 231, the connecting hole 31 is adapted to the connecting tube 232, and a connecting block 331 is provided in the second recess 33, and the connecting block 331 is slidably connected to the mold insert 1.

[0047] In a specific implementation, the clamping portion 231 passes through the lug limiting guide hole 18 and is clamped into the first recess 32. The connecting tube 232 is adaptively installed in the connecting hole 31 and fixedly connected to the connecting block 331. The connecting piece 6 is used to lock the cooperation between the connecting block 331 and the connecting tube 232 to achieve a fastened connection between the lug 2 and the connecting rod 3.

[0048] Specifically, the outer side surface of the mold insert 1 has a connecting rod limiting guide structure: The connecting rod limit guide structure includes two strip-shaped connecting rod limit guide holes 19 arranged in sequence on the mold insert 1, and the connecting rod limit guide hole 19 extends axially; the connecting rod limit guide hole 19 passes through the connecting hole 31, and the width of the connecting rod limit guide hole 19 is adapted to the connecting block 331, and the connecting block 331 slides on the connecting rod limit guide hole 19.

[0049] In the specific implementation, the connecting rod limiting guide hole 19 is used to limit the connecting block 331, and the sliding stroke of the connecting rod 3 is limited, thereby limiting the sliding stroke of the lug 2; the sliding cooperation between the connecting block 331 and the connecting rod limiting guide hole 19 is used to guide the sliding of the connecting rod 3, thereby ensuring that the connecting rod 3 and the lug 2 slide axially, thereby improving the movement accuracy.

[0050] Preferably, the connecting member 6 is a flange screw with a washer to avoid loosening and improve safety performance.

[0051] like Figure 1 , Figure 2 As shown, a channel hole is processed on the mold insert 1 and penetrates the mold insert 1 in the axial direction, and then both ends of the channel hole are closed by cover plates 4 respectively to form the above-mentioned sliding channel 11.

[0052] It should be noted that the middle portion of the sliding channel 11 refers to the area between the two connecting rods 3 , and the end portion of the sliding channel 11 refers to the area between the connecting rod 3 and the cover plate 4 .

[0053] like Fig.11 As shown, the connecting rod 3 can be a split structure connecting rod, including a connecting rod body 34 and two connecting rod covers 35. The two connecting rod covers 35 are respectively installed at both ends of the connecting rod body 34, and two sealing ring grooves are formed after installation. Sealing rings 36 are installed in both sealing ring grooves. Alternatively, the connecting rod 3 may be an integrated structure, with sealing ring grooves at both ends of the connecting rod 3, and sealing rings 36 are installed in the sealing ring grooves at both ends of the connecting rod 3. Preferably, the sealing ring 36 is a Gly ring, and the steel ring of the Gly ring can protect the rubber ring to avoid wear of the rubber ring.

[0054] like Fig.12 As shown, a bottle blowing mold comprises a mold cavity 7 and a handle slot forming mechanism; the handle slot forming mechanism is installed in the mold cavity 7, the mold cavity 7 has a cavity 71, and the two lugs 2 of the handle slot forming mechanism are driven by the air circuit to move in opposite directions or in opposite directions, so that the formed ends of the lugs 2 are correspondingly inserted into the cavity 71 or retracted into the mold cavity 7. Since the bottle blowing mold drives the two lugs 2 to move by connecting the air circuit to the gas pressure source, compared with the rigid mechanical drive used in the prior art, it has the advantages of simple structure, light weight, low energy consumption, low noise, low production and maintenance costs, and easy adjustment, which is conducive to achieving lightweight bottle blowing molds, reducing production costs and maintenance costs, and conforming to the concept of energy conservation and emission reduction. The wear-resistant and easy-to-disassemble and replace design is made for the related parts that are easy to wear, and the strength of the related parts that are easy to break is adjusted to increase the strength, so as to reduce the frequent damage and replacement of the related parts, thereby reducing the maintenance cost, reducing the downtime for replacement, ensuring the stability of bottle blowing, and improving production efficiency.

[0055] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A handle slot forming mechanism, characterized in that: Includes mold inserts; The mold insert is slidably connected with two lugs, which protrude from two ends of the mold insert and have molding ends facing each other in the axial direction; The mold insert is provided with an air path, and the two lugs are respectively connected to the air paths. The air paths are configured to drive the two lugs to move away from each other or towards each other.

2. A handle slot forming mechanism according to claim 1, characterized in that: The mold insert is provided with a sliding channel extending along the axial direction and two connecting rods slidably connected to the sliding channel. The two lugs are respectively fixedly installed on the two connecting rods. The connecting rod and the mold insert jointly define a closed space between the relatively distal end of the connecting rod and the mold insert, and between the relatively proximal ends of the connecting rod; the air circuit is connected to the closed space, and is used to drive the two connecting rods to move away from or towards each other.

3. A handle slot forming mechanism according to claim 2, characterized in that: The gas path includes a first gas path and a second gas path. The gas outlet end of the first gas path is connected to the middle of the sliding channel, and the gas outlet end of the second gas path is respectively connected to the two ends of the sliding channel.

4. The handle slot forming mechanism according to claim 3, characterized in that: The mold insert is provided with a convex block, and the first air inlet connector and the second air inlet connector are respectively connected to the convex block. The air inlet end of the first air circuit is connected to the first air inlet connector, and the air inlet end of the second air circuit is connected to the second air inlet connector.

5. The handle slot forming mechanism according to claim 2, characterized in that: The lug includes a lug slider, a first guide claw and a lug structure. The first guide claw and the lug structure are respectively connected to the outer side and the inner side of the lug slider. The first guide claw protrudes from the side of the lug slider opposite to the two lugs. The outer side of the lug slider is slidably matched with the inner side of the mold insert. The connecting rod is fixedly installed at the end of the first guide claw facing away from the lug structure, and the lug structure defines the molding end. The mold insert is provided with a guide channel extending axially, and the first guide claw is adapted to slide in the guide channel.

6. The handle slot forming mechanism according to claim 5, characterized in that: The inner side surface of the mold insert is provided with two groups of limit block groups which are arranged opposite to each other in the axial direction. Each group of limit block groups includes two limit blocks. The inner side surfaces of the two limit blocks define the guide channel.

7. The handle slot forming mechanism according to claim 5, characterized in that: Two second guide claws are symmetrically provided on the side facing each other of the two lug sliders, and a limit guide block extending axially is provided between the two groups of limit block groups. The width between the two side surfaces of the limit guide block is adapted to the spacing between the two second guide claws, and the limit guide block is slidably connected to the two second guide claws.

8. The handle slot forming mechanism according to claim 7, characterized in that: The connecting rod has a connecting hole that penetrates radially, and the outer periphery of the connecting rod has a first recess and a second recess at the penetration position of the connecting hole respectively; the first guide claw is provided with a clamping portion and a connecting tube, and a lug limiting guide hole is provided between the guide channel and the limiting guide block, and the widths of the first recess and the lug limiting guide hole are both adapted to the clamping portion, and the clamping portion passes through the lug limiting guide hole and is clamped to the first recess; corresponding to the two connecting rods, the mold insert is provided with two strip-shaped connecting rod limiting guide holes in sequence along the axial direction; a connecting block is provided in the second recess, the connecting tube passes through the connecting hole and is fixedly connected to the connecting block, and the connecting block is slidably connected to the connecting rod limiting guide hole.

9. The handle slot forming mechanism according to claim 7, characterized in that: The limiting surfaces of the limiting block and the limiting guide block are detachably connected with wear-resistant gaskets, the inner side surface of the mold insert is detachably connected with a wear-resistant plate, and the lug slides axially on the wear-resistant plate.

10. A bottle blowing mold, characterized in that: It comprises a mold cavity and a handle slot forming mechanism according to any one of claims 1 to 9; The handle slot forming mechanism is installed in the mold cavity, which has a cavity. When the two lugs of the handle slot forming mechanism move away from or towards each other, the forming ends of the lugs correspondingly protrude into or retract into the cavity.

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