Handle clamping groove forming mechanism based on air source driving and bottle blowing mold

Abstract

The utility model relates to a handle clamping groove forming mechanism based on air source driving and a bottle blowing mold. The handle clamping groove forming mechanism comprises a mold insert, two cover plates and two convex lugs, a sliding channel penetrating through the mold insert in the axial direction is machined in the mold insert, and the two cover plates are connected to the two ends of the sliding channel in a sealed mode respectively. The two convex lugs protrude out of the two ends of the mold insert respectively, are provided with forming end parts which are opposite in the axial direction and are connected to the sliding channel in a sliding manner; the mold insert is provided with an air channel, the air channel is connected to the sliding channel, and the air channel is used for driving the two convex lugs to move oppositely or oppositely through configuration. According to the utility model, the two lugs are directly driven by high-pressure gas to move on the sliding channel, so that the bottle blowing device has the advantages of simple structure, light weight, high energy efficiency, environment friendliness, low production and maintenance cost, quick action, quick response, flexible control and the like, and is beneficial to realizing light weight of the bottle blowing mold, reducing the production cost and the maintenance cost and realizing energy conservation and emission reduction.

Description

Technical Field

[0001] This utility model relates to the field of blow molding technology, specifically to a handle slot forming mechanism and blow molding mold based on air source drive. Background Technology

[0002] In the blow molding process of containers with slots, the blow molding die needs to form the upper and lower slots using two lugs. During container blowing, the upper and lower lugs extend into the mold cavity to form the slots; after blowing is completed, the two lugs retract into the mold cavity to facilitate removal of the container from the blow molding die.

[0003] The prior art discloses a blow molding die with a pneumatic handle mechanism, including a mold body, a cavity insert for mating and connecting with the cavity of the mold body, an upper slider and a lower slider disposed at the upper and lower ends of the cavity insert and slidably connected within the cavity insert, the upper end of the upper slider and the lower end of the lower slider respectively having protrusions; it also includes a movable plate disposed at the rear side of the cavity insert and slidably connected to the cavity insert left and right, and a cylinder fixed at the rear side of the movable plate; the upper slider and the lower slider are respectively provided with upper guide rods and lower guide rods at their rear sides, the movable plate has upper sliding grooves and lower sliding grooves that are slidably connected to the upper guide rods and lower guide rods respectively and drive the upper guide rods and lower guide rods to move vertically, and a drive rod is provided at the rear side of the movable plate; the drive rod is fixedly connected to the piston rod of the cylinder and is driven by the piston rod to move horizontally.

[0004] It has the following technical problems:

[0005] It uses cylinders to mechanically drive the upper and lower sliders to move, requiring many components. It has disadvantages such as complex structure, large weight, high energy consumption, high noise, high production and maintenance costs, and difficulty in adjustment. It is not conducive to achieving lightweight blow molding, making it difficult to reduce production and maintenance costs, which goes against the concept of energy conservation and emission reduction.

[0006] In addition, the long-term linear high-speed sliding of the upper and lower sliders can easily cause wear and breakage of related components, shortening their service life.

[0007] Therefore, targeted improvements are needed. Utility Model Content

[0008] To address the problems existing in the prior art, the purpose of this utility model is to provide a handle slot forming mechanism and blow molding die based on air source drive, which has the advantages of simple structure, light weight, high energy efficiency, environmental friendliness, low production and maintenance costs, fast action and response, and flexible control. It is conducive to realizing the lightweighting of blow molding dies and reducing production and maintenance costs.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A handle slot forming mechanism based on air source drive includes a mold insert, two cover plates and two lugs;

[0011] The mold insert has a sliding channel that runs through it axially, and two cover plates are respectively connected to the two ends of the sliding channel.

[0012] Two lugs protrude from both ends of the mold insert and have shaped ends facing away from each other in the axial direction. The two lugs are slidably connected to the sliding channel.

[0013] The mold insert is equipped with an air passage that connects to the sliding channel. The air passage is configured to drive the two lugs to move in opposite directions or towards each other.

[0014] Furthermore, the mold insert has two connecting rods arranged axially, and two lugs are fixedly installed on the two connecting rods respectively. The two connecting rods are slidably connected to the sliding channel. The connecting rods and the mold insert together define the sealed space between the relatively distal end of the connecting rod and the mold insert, and between the relatively proximal end of the connecting rod; the air passage is connected to the sealed space.

[0015] Furthermore, the air path includes a first air path and a second air path. The outlet of the first air path is connected to the middle of the sliding channel, and the outlet of the second air path is connected to both ends of the sliding channel.

[0016] Furthermore, the mold insert is provided with a protrusion, on which a first air inlet connector and a second air inlet connector are respectively connected. The air inlet end of the first air passage is connected to the first air inlet connector, and the air inlet end of the second air passage is connected to the second air inlet connector.

[0017] 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 and inner sides of the lug slider. The first guide claw protrudes from the opposite side of the lug slider of the two lugs. The outer side of the lug slider slides in cooperation with the inner side of the mold insert. The connecting rod is fixedly installed on the end of the first guide claw facing away from the lug structure. The lug structure defines the molding end. The mold insert is provided with a guide channel extending along the axial direction. The first guide claw is adapted to slide in the guide channel.

[0018] Furthermore, the inner side of the mold insert is provided with two sets of limiting blocks arranged opposite each other along the axial direction. Each set of limiting blocks includes two limiting blocks, and the inner side of the two limiting blocks defines the guide channel.

[0019] Furthermore, two second guide claws are symmetrically provided on the opposite side of the two lug sliders, and a limiting guide block extending along the axial direction is provided between the two sets of limiting blocks. The width between the two sides of the limiting guide block is adapted to the distance between the two second guide claws, and the limiting guide block and the two second guide claws are slidably connected.

[0020] Furthermore, the connecting rod has a radially penetrating connecting hole, and the outer periphery of the connecting rod has a first recess and a second recess at the penetrating position of the connecting hole. The first guide claw is provided with a snap-fit ​​part and a connecting cylinder. A lug limiting guide hole is provided between the guide channel and the limiting guide block. The widths of the first recess and the lug limiting guide hole are both adapted to the snap-fit ​​part. The snap-fit ​​part passes through the lug limiting guide hole and snaps into 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 cylinder passes through the connecting hole and is fixed to the connecting block. The connecting block is slidably connected to the connecting rod limiting guide hole.

[0021] Furthermore, wear-resistant pads are detachably connected to the limiting surfaces of both the limiting block and the limiting guide block, and wear-resistant plates are detachably connected to the inner side of the mold insert, with the lugs sliding axially on the wear-resistant plates.

[0022] A blow molding die includes a mold cavity and a handle slot forming mechanism;

[0023] 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 in opposite directions or towards each other, the forming ends of the lugs protrude into the cavity or retract into the mold cavity accordingly.

[0024] In summary, this utility model has the following advantages:

[0025] This invention incorporates an air passage in the mold insert, which connects to a gas pressure source to drive the two lugs to move in opposite directions or towards each other. Compared to existing technologies that utilize rigid mechanical drives with cylinders to move the upper and lower sliders, this invention employs pneumatic drive to move the two lugs along a sliding channel, significantly reducing the number of components required for mating. It boasts advantages such as simple structure, lighter weight, high energy efficiency, environmental friendliness, low production and maintenance costs, rapid action and response, and flexible control. This facilitates the lightweighting of blow molding molds, reduces production and maintenance costs, and achieves energy conservation and emission reduction. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the handle slot forming mechanism in this embodiment.

[0027] Figure 2 This is a three-dimensional structural diagram of the mold insert in this embodiment.

[0028] Figure 3 This is a top view of the handle slot forming mechanism in this embodiment.

[0029] Figure 4 for Figure 3 AA view in the middle.

[0030] Figure 5This is a bottom view of the handle slot forming mechanism in this embodiment.

[0031] Figure 6 for Figure 5 The EE view in the middle.

[0032] Figure 7 for Figure 5 The FF view in the game.

[0033] Figure 8 This is a schematic diagram of the installation of the connecting rod and lug in this embodiment.

[0034] Figure 9 This is a three-dimensional structural diagram of the lug in this embodiment.

[0035] Figure 10 This is a three-dimensional structural diagram of the connecting rod in this embodiment.

[0036] Figure 11 This is a schematic diagram of the structure of the split connecting rod and the integrated connecting rod in this embodiment.

[0037] Figure 12 This is a schematic diagram of the internal structure of the blow molding die in this embodiment.

[0038] In the picture:

[0039] 1-Mold insert, 11-Sliding channel, 12-First air passage, 13-Second air passage, 14-Limiting block, 141-Guide channel, 15-Limiting guide block, 16-Wear-resistant pad, 17-Wear-resistant plate, 18-Lumber limiting guide hole, 19-Connecting rod limiting guide hole;

[0040] 2-Lunge, 21-Lunge slider, 22-Lunge structure, 23-First guide claw, 231-Snap-fit ​​part, 232-Connecting cylinder, 24-Second guide claw;

[0041] 3-Connecting rod, 31-Sliding channel, 32-First recess, 33-Second recess, 331-Connecting block, 34-Connecting rod body, 35-Connecting rod cover, 36-Sealing ring;

[0042] 4-Cover plate;

[0043] 5-Protrusion, 51-First air intake connector, 52-Second air intake connector;

[0044] 6-Connectors;

[0045] 7-Mold cavity, 71-Cavity. Detailed Implementation

[0046] The present invention will now be described in further detail.

[0047] like Figures 1-7As shown, a handle slot forming mechanism based on air source drive includes 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 and have forming ends that are opposite to each other in the axial direction.

[0048] The mold insert 1 is equipped with an air passage, and two lugs 2 are respectively connected to the air passage. The air passage is used to introduce high-pressure gas to drive the two lugs 2 to move back to back or towards each other. Compared with the prior art that uses rigid mechanical drive to move the two lugs 2, this embodiment adopts pneumatic drive, which has the advantages of simple structure, small weight, high energy efficiency, environmental friendliness, low production and maintenance costs, fast action and response, and flexible control. It is conducive to realizing the lightweighting of blow molding molds, reducing production and maintenance costs, and achieving energy conservation and emission reduction.

[0049] like Figure 2 , Figure 8 As shown, two opposing lugs 2 are sequentially arranged along the axial direction on the inner side of the mold insert 1. A sliding channel 11 is arranged along the axial direction inside the mold insert 1. Two connecting rods 3 are sequentially slidably arranged along the axial direction in the sliding channel 11. The two connecting rods 3 are respectively connected to the two lugs 2 one-to-one. The connecting rods 3 can drive the lugs 2 to slide along the axial direction on the inner side of the mold insert 1. The connecting rods 3 and the mold insert 1 together define the sealed space between the relatively distal end of the connecting rod 3 and the mold insert 1, and the sealed 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 end of the connecting rod 3 are both enclosed to form sealed spaces). The air passage is connected to the sealed space.

[0050] like Figure 6 , Figure 7 As shown, the air passage of the mold insert 1 includes a first air passage 12 and a second air passage 13. The air outlet of the first air passage 12 is connected to the middle of the sliding channel 11, and the air outlet of the second air passage 13 is connected to both ends of the sliding channel 11. When the first air passage 12 is under positive pressure, it pushes the two connecting rods 3 from the inside out, causing the two connecting rods 3 to slide synchronously and in opposite directions in the sliding channel 11, thereby causing the two lugs 2 to slide synchronously and in opposite directions on the inner surface of the mold insert 1. When the second air passage 13 is under positive pressure, it pushes the two connecting rods 3 from the outside in, causing the two connecting rods 3 to slide synchronously and in opposite directions in the sliding channel 11, thereby causing the two lugs 2 to slide synchronously and in opposite directions on the inner surface of the mold insert 1, thus enabling the two lugs 2 to extend or retract on the mold insert 1.

[0051] like Figure 1 , Figure 4 , Figure 6 , Figure 7As shown, the outer surface of the mold insert 1 has an outwardly protruding protrusion 5. A first air inlet connector 51 and a second air inlet connector 52 are respectively connected to the protrusion 5. The air inlet end of the first air passage 12 is connected to the first air inlet connector 51, and the air inlet end of the second air passage 13 is connected to the second air inlet connector 52. The first air passage 12 and the second air passage 13 are respectively connected to a gas pressure source through the first air inlet connector 51 and the second air inlet connector 52, so that the first air passage 12 and the second air passage 13 respectively obtain positive pressure. In practice, when the first air passage 12 or the second air passage 13 obtains positive pressure, the second air passage 13 and the first air passage 12 are respectively under negative pressure, so as to better drive the two connecting rods 3 to move.

[0052] like Figure 9 As 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 and inner sides 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 slides in engagement 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 23 is provided with a snap-fit ​​part 231 and a connecting cylinder 232.

[0053] Specifically, the inner side of the mold insert 1 has a lug limiting and guiding structure, which is used to limit and guide the extension and retraction movement of the lug 2 to improve the stability of the mold operation.

[0054] like Figure 2 As shown, the lug limiting guide structure includes two sets of limiting blocks arranged opposite each other along the axial direction, each set of limiting blocks including two limiting blocks 14; the mold insert 1 is provided with a guide channel 141 extending along the axial direction, the inner surfaces of the two limiting blocks 14 define the guide channel 141, and the first guide claw 23 is adapted to slide in the guide channel 141.

[0055] The lug limiting guide structure also includes a limiting guide block 15 that extends axially between two sets of limiting blocks. Two second guide claws 24 are symmetrically provided on the opposite side of the two lug sliders 21. The width between the two sides of the limiting guide block 15 is adapted to the distance between the two second guide claws 24. The limiting guide block 15 and the two second guide claws 24 are slidably connected.

[0056] The lug limiting guide structure also includes two lug limiting guide holes 18 arranged sequentially along the axial direction. The lug limiting guide holes 18 extend axially between the guide channel 141 and the limiting guide block 15. The lug limiting guide holes 18 penetrate to the connecting hole 31 on the connecting rod 3. The width of the lug limiting guide holes 18 is adapted to the snap-fit ​​part 231.

[0057] In specific implementation, the limiting block group is used to limit the two lug sliders 21, which can limit the outer side of the lug 2; the limiting guide block 15 is used to limit the two lug sliders 21, which can limit the inward movement of the lug 2; the lug limiting guide hole 18 is used to limit the snap-fit ​​part 231, which can limit the outward movement of the lug 2. The sliding stroke of the lug 2 is limited from multiple angles, ensuring the safety of the movement of the lug 2.

[0058] By utilizing the sliding engagement between the first guide claw 23 and the guide channel 141, the sliding engagement between the two second guide claws 24 and the two sides of the limiting guide block 15, and the sliding engagement between the snap-fit ​​part 231 and the lug limiting guide hole 18, the lug 2 is guided to slide from multiple positions, thereby ensuring that the lug 2 slides along the axial direction and improving the motion accuracy.

[0059] Through the above multi-angle and multi-position limiting and guiding, the smooth movement of the lug 2 is ensured.

[0060] To address the issue that long-term, high-speed linear sliding of lug 2 can easily cause wear and breakage of related components, such as... Figure 1 As shown, wear-resistant pads 16 are detachably connected to the limiting surfaces of the limiting block 14 and the limiting guide block 15, respectively. Limiting wear occurs on the wear-resistant pads 16. After wear, the wear-resistant pads 16 can be replaced without replacing the mold insert 1, thus extending the service life of the mold insert 1 and other related components.

[0061] Specifically, a wear-resistant plate 17 is detachably connected to the inner side of the mold insert 1, and the lug 2 slides axially on the wear-resistant plate 17. Since sliding wear occurs on the wear-resistant plate 17, the wear-resistant plate 17 can be replaced after wear, without replacing the mold insert 1, thus extending the service life of the mold insert 1.

[0062] like Figure 10 As shown, the middle part of the connecting rod 3 has a radially penetrating connecting hole 31. The outer periphery of the connecting rod 3 has a first recess 32 and a second recess 33 on both sides of the penetrating position of the connecting hole 31. The first recess 32 is adapted to the snap-fit ​​part 231, the connecting hole 31 is adapted to the connecting cylinder 232, and a connecting block 331 is provided in the second recess 33. The connecting block 331 is slidably connected to the mold insert 1.

[0063] In practice, the snap-fit ​​part 231 passes through the lug limiting guide hole 18 and snaps into the first recess 32. The connecting cylinder 232 is adapted to be installed in the connecting hole 31 and fixed to the connecting block 331. The connecting piece 6 is used to lock the cooperation between the connecting block 331 and the connecting cylinder 232, so as to achieve a tight connection between the lug 2 and the connecting rod 3.

[0064] Specifically, the outer surface of mold insert 1 has a connecting rod limiting and guiding structure:

[0065] The connecting rod limiting guide structure includes two strip-shaped connecting rod limiting guide holes 19 arranged sequentially on the mold insert 1. The connecting rod limiting guide holes 19 extend axially. The connecting rod limiting guide holes 19 penetrate to the connecting hole 31. The width of the connecting rod limiting guide holes 19 is adapted to the connecting block 331. The connecting block 331 slides on the connecting rod limiting guide holes 19.

[0066] In specific implementation, the connecting block 331 is limited by the connecting rod limiting guide hole 19, which limits the sliding stroke of the connecting rod 3, 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 guides the sliding of the connecting rod 3, thereby ensuring that the connecting rod 3 and the lug 2 slide along the axial direction and improving the motion accuracy.

[0067] Preferably, connector 6 is a flange bolt with washer and toothed edge to prevent loosening and improve safety performance.

[0068] like Figure 1 , Figure 2 As shown, the mold insert 1 has a channel hole that runs through the mold insert 1 along the axial direction. Then, the two ends of the channel hole are closed with a cover plate 4 to form the sliding channel 11 mentioned above.

[0069] It should be noted that the middle part of the sliding channel 11 refers to the area between the two connecting rods 3, and the end of the sliding channel 11 refers to the area between the connecting rod 3 and the cover plate 4.

[0070] like Figure 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, forming two sealing ring grooves after installation. A sealing ring 36 is installed in each of the two sealing ring grooves.

[0071] Alternatively, the connecting rod 3 can be a one-piece 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.

[0072] Preferably, the sealing ring 36 is a Glyd ring, whose steel ring can protect the rubber ring and prevent wear on the rubber ring.

[0073] like Figure 12As shown, a blow molding die includes a mold cavity 7 and a handle slot forming mechanism. The handle slot forming mechanism is installed in the mold cavity 7, which has a cavity 71. Two lugs 2 of the handle slot forming mechanism are driven by an air passage to move in opposite directions or towards each other, so that the forming ends of the lugs 2 protrude into the cavity 71 or retract into the mold cavity 7 accordingly. Since the blow molding die uses an air passage connected to a gas pressure source to drive the movement of the two lugs 2, compared with the rigid mechanical drive of the prior art, it has advantages such as simple structure, lighter weight, lower energy consumption, lower noise, lower production and maintenance costs, and easier adjustment. This facilitates the lightweighting of blow molding dies, reduces production and maintenance costs, and conforms to the concept of energy conservation and emission reduction. Wear-resistant and easily replaceable parts are designed for easy wear, and strength-enhancing adjustments are made for easily broken parts to reduce frequent damage and replacement of related parts, thereby reducing maintenance costs, reducing downtime for replacement, ensuring blow molding stability, and improving production efficiency.

[0074] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A handle slot forming mechanism based on air source drive, characterized in that: Includes mold inserts, two cover plates, and two lugs; The mold insert has a sliding channel that runs through it axially, and two cover plates are respectively connected to the two ends of the sliding channel. Two lugs protrude from both ends of the mold insert and have shaped ends facing away from each other in the axial direction. The two lugs are slidably connected to the sliding channel. The mold insert is equipped with an air passage that connects to the sliding channel. The air passage is configured to drive the two lugs to move in opposite directions or towards each other.

2. The handle slot forming mechanism based on air source drive according to claim 1, characterized in that: The mold insert has two connecting rods arranged along the axial direction. Two lugs are fixedly installed on the two connecting rods respectively. The two connecting rods are slidably connected to the sliding channel. The connecting rods and the mold insert together define the sealed space between the relatively far end of the connecting rod and the mold insert, and between the relatively near end of the connecting rod; the air passage is connected to the sealed space.

3. The handle slot forming mechanism based on air source drive according to claim 2, characterized in that: The air path includes a first air path and a second air path. The outlet of the first air path is connected to the middle of the sliding channel, and the outlet of the second air path is connected to both ends of the sliding channel.

4. The handle slot forming mechanism based on air source drive according to claim 3, characterized in that: The mold insert is provided with a protrusion, and a first air inlet connector and a second air inlet connector are respectively connected to the protrusion. The air inlet end of the first air passage is connected to the first air inlet connector, and the air inlet end of the second air passage is connected to the second air inlet connector.

5. The handle slot forming mechanism based on air source drive according to claim 1, 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 and inner sides of the lug slider. The first guide claw protrudes from the opposite side of the lug slider of the two lugs. The outer side of the lug slider slides in cooperation with the inner side of the mold insert. The connecting rod is fixedly installed on the end of the first guide claw facing away from the lug structure. The lug structure defines the molding end. The mold insert is provided with a guide channel extending along the axial direction. The first guide claw is adapted to slide in the guide channel.

6. The handle slot forming mechanism based on air source drive according to claim 5, characterized in that: The inner side of the mold insert is provided with two sets of limiting blocks arranged opposite each other along the axial direction. Each set of limiting blocks includes two limiting blocks, and the inner side of the two limiting blocks defines the guide channel.

7. The handle slot forming mechanism based on air source drive according to claim 5, characterized in that: Two second guide claws are symmetrically provided on one side of the two lug sliders facing each other. A limiting guide block extending along the axial direction is provided between the two sets of limiting blocks. The width between the two sides of the limiting guide block is adapted to the distance between the two second guide claws. The limiting guide block and the two second guide claws are slidably connected.

8. A handle slot forming mechanism based on air source drive according to claim 7, characterized in that: The connecting rod has a radially penetrating connecting hole. The outer periphery of the connecting rod has a first recess and a second recess at the penetrating position of the connecting hole. The first guide claw has a snap-fit ​​part and a connecting cylinder. A lug limiting guide hole is provided between the guide channel and the limiting guide block. The width of the first recess and the lug limiting guide hole are both adapted to the snap-fit ​​part. The snap-fit ​​part passes through the lug limiting guide hole and snaps into the first recess. Corresponding to the two connecting rods, the mold insert has two strip-shaped connecting rod limiting guide holes arranged in sequence along the axial direction. A connecting block is provided in the second recess. The connecting cylinder passes through the connecting hole and is fixed to the connecting block. The connecting block is slidably connected to the connecting rod limiting guide hole.

9. A handle slot forming mechanism based on air source drive according to claim 7, characterized in that: Wear-resistant pads are detachably connected to the limiting surfaces of both the limiting block and the limiting guide block. Wear-resistant plates are detachably connected to the inner side of the mold insert, and the lugs slide axially on the wear-resistant plates.

10. A blow molding die, characterized in that: Includes a mold cavity and a handle slot forming mechanism as described in any one of claims 1-9; 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 in opposite directions or towards each other, the forming ends of the lugs protrude into the cavity or retract into the mold cavity accordingly.

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