A hoisting tool for a mold core mold

Abstract

The utility model discloses a hoist frock of mould core mould, hoist frock includes support frame, swivel disc and lifting ring, support frame includes first crossbeam, second crossbeam and stringer, and the upper end of stringer is connected with the first end of first crossbeam, and the lower end of stringer is connected with the first end of second crossbeam, and lifting ring sets up on first crossbeam, and swivel disc rotation sleeve sets in the second end of second crossbeam, and a plurality of fixed holes are evenly opened on swivel disc along the circumference, and each fixed hole is equipped with connecting piece, and connecting piece is used for with the screw hole on the end face of mould core mould cooperation. This hoist frock simple structure, convenient operation can hoist up mould core mould, and the assembly / disassembly of mould core mould and injection molding machine mould is realized fast.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding machine disassembly and assembly technology, and specifically relates to a hoisting fixture for mold core mold. Background Technology

[0002] The mold core is a key sub-component in an injection molding machine mold. It is usually a convex structure and works in conjunction with the "cavity" (concave structure) on the injection molding machine mold. Its core function is to form the internal shape or concave structure of the plastic part (such as the internal thread of a bottle cap, the inner curved surface of a plastic cup, the internal ribs of an appliance casing, etc.). The mold core is generally fixed on the moving mold or fixed mold of the injection molding machine and moves with the opening and closing of the mold, together with the cavity, defining the final shape of the plastic part.

[0003] Traditional solid-wall pipe molds use a core mold fixed to the mold with a pressure plate and screws. Changing the core mold simply involves loosening the screws, removing the pressure plate, detaching the core mold, hoisting another core mold to the mold, replacing the pressure plate, and tightening the screws to secure it. However, when pipe coating molds are used to coat a pre-formed plastic pipe with a layer of another material for special purposes, the core mold of the coating mold, being hollow and designed for the pre-formed plastic pipe to pass through, cannot be fixed to the mold with a pressure plate and screws like the core mold of a solid-wall pipe mold. Therefore, the core mold of a pipe coating mold is typically screwed onto the mold using a threaded structure at its tail. This threaded core mold cannot be hoisted onto the mold using conventional lifting equipment, increasing the difficulty of installation and disassembly. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a hoisting fixture for a mold core mold, which overcomes or at least partially solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a hoisting fixture for a mold core mold, the hoisting fixture including a support frame, a rotating disk and a lifting ring;

[0007] The support frame includes a first crossbeam, a second crossbeam, and a longitudinal beam. The upper end of the longitudinal beam is connected to the first end of the first crossbeam, and the lower end of the longitudinal beam is connected to the first end of the second crossbeam. The lifting ring is disposed on the first crossbeam, and the rotating disk is rotatably sleeved on the second end of the second crossbeam. The rotating disk has multiple fixing holes evenly distributed along its circumference, and each fixing hole is provided with a connector for engaging with a screw hole on the end face of the mold core.

[0008] Furthermore, the fixing hole is an oblong hole, and the length direction of the fixing hole extends radially along the rotating disk.

[0009] Furthermore, a rotating handle extends radially from the rotating disk.

[0010] Furthermore, the hoisting fixture also includes a supporting circular plate;

[0011] The supporting circular plate is rotatably sleeved on the second end of the second crossbeam and located on the side of the rotating disk away from the longitudinal beam. When the hoisting tooling hoists the mold core mold, the supporting circular plate can enter the inner diameter of the mold core mold and provide support to the inner wall of the mold core mold.

[0012] Furthermore, the hoisting fixture also includes a limiting plate;

[0013] A circular plate bearing is fitted on the second end of the second crossbeam, and the supporting circular plate is fitted on the outer circumference of the circular plate bearing. The limiting plate is fixed to the second end face of the second crossbeam by fixing screws or fixing bolts, and the limiting plate is used for axial limiting of the supporting circular plate.

[0014] Furthermore, the rotating disk is fixedly connected to the supporting circular plate.

[0015] Furthermore, a turntable bearing is fitted onto the second end of the second crossbeam, and the turntable is fitted onto the outer circumference of the turntable bearing.

[0016] Furthermore, the lifting fixture also includes a sliding ring and locking screws or locking bolts;

[0017] The length of the first crossbeam is greater than the length of the second crossbeam. The sliding ring is sleeved on the first crossbeam and can slide along the length of the first crossbeam. The sliding ring has a limit screw hole. The front end of the locking screw or the locking bolt can be screwed into the limit screw hole and press against the first crossbeam. The lifting ring is fixed on the sliding ring.

[0018] Furthermore, a limiting member is provided on the second end of the first crossbeam, which is used to prevent the sliding ring from falling off from the second end of the first crossbeam.

[0019] Furthermore, the first crossbeam is provided with a slide rail, which extends along the length of the first crossbeam, and the sliding ring is provided with a slider that cooperates with the slide rail.

[0020] The advantages and beneficial effects of this utility model are:

[0021] In this utility model of lifting fixture, by setting fixing holes and connecting parts on the rotating disk, and by fitting the rotating disk sleeve onto the lower part of the support frame, the mold core mold can be fixed on the rotating disk and rotate with the rotating disk, making it easier to screw the threaded structure on the mold core mold into or out of the injection molding machine mold; and by setting a lifting ring at the upper end of the support frame, it is easier to lift the mold core mold. This lifting fixture has the advantages of simple structure and convenient operation, which can not only reduce the difficulty of assembling / disassembling the mold core mold and the injection molding machine mold, but also reduce the workload of assembly / disassembly, making assembly / disassembly more convenient. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a front view of the hoisting tool lifting the mold core mold in one embodiment of the present invention;

[0024] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 A left view of the hoisting tooling lifting the mold core in one embodiment of this utility model.

[0026] In the diagram: 1. Support frame; 1-1. First crossbeam; 1-2. Second crossbeam; 1-3. Longitudinal beam; 2. Rotating disc; 3. Lifting ring; 4. Fixing hole; 5. Connecting piece; 6. Mold core mold; 7. Rotating handle; 8. Supporting circular plate; 9. Limiting plate; 10. Circular plate bearing; 11. Fixing bolt; 12. Sliding ring sleeve; 13. Locking bolt; 14. Limiting piece. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0032] One embodiment of this utility model provides a hoisting fixture for a mold core mold, such as... Figure 1 and Figure 3 As shown, the hoisting fixture includes a support frame 1, a rotating disk 2, and a lifting ring 3.

[0033] Specifically, the support frame 1 includes a first crossbeam 1-1, a second crossbeam 1-2, and a longitudinal beam 1-3. The upper end of the longitudinal beam 1-3 is connected to the first end of the first crossbeam 1-1, and the lower end of the longitudinal beam 1-3 is connected to the first end of the second crossbeam 1-2, so that the support frame 1 is in the shape of a horizontal U-shaped core. Preferably, the first crossbeam 1-1, the second crossbeam 1-2, and the longitudinal beam 1-3 adopt an integrated structure, so that the support frame 1 has good structural strength and can support the mold core 6. Of course, the first crossbeam 1-1, the second crossbeam 1-2, and the longitudinal beam 1-3 can also be connected by welding or screws.

[0034] Additionally, a lifting ring 3 is mounted on the first crossbeam 1-1. The lifting ring 3 provides a connection point for the crane hook. The shape of the lifting ring 3 can be circular, triangular, elliptical, oblong, or other shapes. A rotating disk 2 is rotatably mounted on the second end of the second crossbeam 1-2, allowing the rotating disk 2 to rotate relative to the support frame 1. Multiple fixing holes 4 are evenly distributed along the circumference of the rotating disk 2. Each fixing hole 4 contains a connecting piece 5, which engages with a screw hole on the end face of the mold core 6. After the mold core 6 is fixed to the rotating disk 2 via the connecting piece 5, the mold core 6 can rotate with the rotating disk 2. The connecting piece 5 can be a connecting screw or a connecting bolt.

[0035] The process of using the hoisting fixture in this embodiment to hoist the mold core 6 onto the injection molding machine mold is as follows:

[0036] First, screw the connecting parts 5 on the rotating disk 2 into the corresponding screw holes on the end face of the mold core mold 6 to fix the mold core mold 6 relative to the rotating disk 2. Second, lift the lifting fixture carrying the mold core mold 6 using the lifting ring 3, and align the threaded structure on the mold core mold 6 with the threaded structure on the injection molding machine mold. Then, rotate the rotating disk 2 to make the mold core mold 6 rotate circumferentially, thereby screwing the threaded structure on the mold core mold 6 into the threaded structure on the injection molding machine mold. Finally, unscrew the connecting parts 5 on the rotating disk 2 from the corresponding screw holes on the end face of the mold core mold 6 to separate the mold core mold 6 from the lifting fixture.

[0037] The process of removing the mold core 6 from the injection molding machine mold is the reverse of the process of hoisting the mold core 6 onto the injection molding machine mold, and will not be described in detail here.

[0038] It can be seen that the hoisting tool is easy to operate, and only one or two operators are needed to assemble and disassemble the mold core 6, which greatly reduces labor costs.

[0039] In summary, in this embodiment of the lifting fixture, by setting fixing holes and connecting parts on the rotating disk, and by fitting the rotating disk sleeve onto the lower part of the support frame, the mold core mold can be fixed on the rotating disk and rotate with the rotating disk, making it easier to screw the threaded structure on the mold core mold into or out of the injection molding machine mold; furthermore, by setting a lifting ring at the upper end of the support frame, it is easier to lift the mold core mold; this lifting fixture has the advantages of simple structure and convenient operation, which can not only reduce the difficulty of assembling / disassembling the mold core mold and the injection molding machine mold, but also reduce the workload of assembly / disassembly, making assembly / disassembly more convenient.

[0040] In this embodiment, as Figure 3As shown, the fixing hole 4 is an oblong hole, and the length of the fixing hole 4 extends radially along the rotating disk 2, so that the connecting piece 5 can move radially along the rotating disk 2 within the fixing hole 4, so as to realize the connection and cooperation between the connecting piece 5 and the mold core mold 6 of different diameter sizes, thereby realizing the hoisting tool to hoist different models of mold core mold 6, making the application scenarios of the hoisting tool wider.

[0041] Furthermore, a rotating handle 7 extends radially along the rotating disk 2, allowing the operator to manually drive the rotating disk 2 by rotating the handle 7. Figure 3 As can be seen, the rotating handle 7 can specifically be two rotating rods, which are symmetrically arranged and extend radially along the rotating disk 2. The two rotating rods are fixed on the end face of the rotating disk 2 near the longitudinal beam 1-3. Of course, the two rotating rods can also be fixed on the outer circumference of the rotating disk 2. Alternatively, the rotating handle 7 can also be multiple rotating rods, which are evenly arranged circumferentially on the rotating disk 2.

[0042] In other embodiments, the rotating disk can also be driven by a motor; specifically, the motor is mounted on the second crossbeam, and a drive gear is provided on the motor shaft. A driven gear is coaxially fixedly connected to the rotating disk, and the drive gear and the driven gear mesh to achieve automatic rotation of the rotating disk.

[0043] In addition, to increase the rotational torque of the rotating disk, a speed reducer can be installed between the driving gear and the driven gear to achieve the purpose of reducing speed and increasing torque.

[0044] In this embodiment, as Figure 1 As shown, the hoisting fixture also includes a supporting circular plate 8.

[0045] The supporting circular plate 8 is rotatably sleeved at the second end of the second crossbeam 1-2, and located on the side of the rotating disk 2 away from the longitudinal beam 1-3. That is, the supporting circular plate 8 and the rotating disk 2 are arranged parallel to each other. The inner diameter of the supporting circular plate 8 and the mold core 6 are tolerance-matched. When the lifting fixture lifts the mold core 6, the supporting circular plate 8 can enter the inner diameter of the mold core 6 and provide support to the inner wall of the mold core 6. In other words, the supporting circular plate 8 supports the overall weight of the mold core 6. This not only makes the rotation of the mold core 6 more stable but also reduces the additional bending moment on the connecting part 5, extending the service life of the connecting part 5. Furthermore, since the supporting circular plate 8 is circular, its outer circumference can fully fit with the inner wall of the mold core 6, effectively preventing deformation of the inner wall of the mold core 6 due to localized stress. The supporting circular plate 8 can also be replaced by a supporting ring.

[0046] And, as Figure 2 As shown, the hoisting fixture also includes a limit plate 9.

[0047] A circular plate bearing 10 is fitted onto the second end of the second crossbeam 1-2. A supporting circular plate 8 is fitted onto the outer circumference of the circular plate bearing 10. A limiting plate 9 is fixed to the second end face of the second crossbeam 1-2 by fixing screws or fixing bolts 11. The limiting plate 9 is used to axially limit the circular plate 8. Specifically, a trapezoidal platform is formed at the second end of the second crossbeam 1-2. The circular plate bearing 10 is fitted onto the trapezoidal platform. A through hole is opened at the center of the supporting circular plate 8. The through hole fits onto the outer circumference of the circular plate bearing 10. The diameter of the limiting plate 9 is larger than the diameter of the through hole. The limiting plate 9 is fixed to the second end face of the second crossbeam 1-2 by fixing screws or fixing bolts 11 to prevent the supporting circular plate 8 from falling off the second end of the second crossbeam 1-2. To increase the firmness of the connection, there are multiple fixing screws or fixing bolts 11, preferably four, and each fixing screw or fixing bolt 11 is provided with a washer.

[0048] Meanwhile, since the supporting circular plate 8 is limited on the second crossbeam 1-2 by the limiting plate 9, the supporting circular plate 8 can be disassembled after the limiting plate 9 is removed. In this way, the supporting circular plate 8 of the corresponding size can be selected and installed on the hoisting fixture according to the model of the mold core mold 6 to be hoisted.

[0049] Furthermore, a turntable bearing (not shown in the figure) is fitted onto the second end of the second crossbeam, and the rotating disk is fitted onto the outer circumference of the turntable bearing. At this time, the rotating disk and the supporting circular plate are not directly connected, and the two can rotate independently without mutual interference.

[0050] In other embodiments, the rotating disk and the supporting circular plate are fixedly connected, meaning they share a single bearing, which simplifies the structure of the lifting fixture. The rotating disk and the supporting circular plate can be relatively fixed by welding or screws; preferably, the rotating disk and the supporting circular plate are an integrated structure, making the lifting fixture more robust.

[0051] In this embodiment, as Figure 1 and Figure 3 As shown, the hoisting fixture also includes a sliding ring 12 and a locking screw or locking bolt 13.

[0052] Specifically, the length of the first crossbeam 1-1 is greater than the length of the second crossbeam 1-2. The sliding ring 12 is fitted onto the first crossbeam 1-1 and can slide along the length of the first crossbeam 1-1. The lifting ring 3 is fixed on the sliding ring 12. In this way, the position of the center of gravity of the lifting fixture that lifts the mold core 6 can be adjusted by the position of the sliding ring 12 on the first crossbeam 1-1, so that the axial direction of the mold core 6 is in a horizontal position, which makes it easy for the threaded structure on the mold core 6 to align with the threaded structure on the injection molding machine mold, and thus facilitates the threaded fixing of the two.

[0053] It should be noted that the position of the sliding ring 12 on the first crossbeam 1-1 can be adjusted manually, electrically, or pneumatically. When electrically adjusted, a rack can be installed on the first crossbeam 1-1, and a drive motor can be mounted on the sliding ring 12. The motor shaft of the drive motor has a drive gear that meshes with the rack. The rotation of the drive motor moves the sliding ring 12 on the first crossbeam 1-1. When pneumatically adjusted, the cylinder body of the pneumatic cylinder can be fixed on the first crossbeam 1-1, and the piston rod of the pneumatic cylinder can be fixed to the sliding ring 12. The extension and retraction of the piston rod moves the sliding ring 12 on the first crossbeam 1-1.

[0054] Furthermore, the sliding ring sleeve 12 has a limiting screw hole, and the front end of the locking screw or locking bolt 13 can be screwed into the limiting screw hole and pressed against the first crossbeam 1-1, thereby fixing the sliding ring sleeve 12 and the first crossbeam 1-1 relatively. When adjusting the position of the sliding ring sleeve 12 on the first crossbeam 1-1, firstly, place the mold core mold 6 on the support platform; secondly, rotate the locking screw or locking bolt 13 to disengage the front end of the locking screw or locking bolt 13 from the first crossbeam 1-1, thereby allowing the sliding ring sleeve 12 to move; then, move the sliding ring sleeve 12 to a suitable position so that the axial direction of the mold core mold 6 is in a horizontal position; finally, tighten the locking screw or locking bolt 13 to lock the position of the sliding ring sleeve 12. There are two locking screws or locking bolts 13, located on both sides of the sliding ring sleeve 12, so that the sliding ring sleeve 12 is subjected to more even force.

[0055] Furthermore, the cross-sections of the first crossbeam 1-1 and the sliding ring 12 along the length direction perpendicular to the first crossbeam 1-1 are rectangular. This prevents rotation between the sliding ring 12 and the first crossbeam 1-1, thereby ensuring the stability of the hoisting. Of course, the cross-sections of the first crossbeam 1-1 and the sliding ring 12 along the length direction perpendicular to the first crossbeam 1-1 can also be square or elliptical, which are also within the protection scope of this utility model.

[0056] In addition, such as Figure 1 As shown, a limiting member 14 is provided on the second end of the first crossbeam 1-1. The limiting member 14 is used to limit the movement of the sliding ring 12 and prevent the sliding ring 12 from falling off from the second end of the first crossbeam 1-1. The limiting member 14 can be a limiting screw or a limiting bolt, or a limiting protrusion. Any device that can achieve the limiting effect is acceptable and is not limited here.

[0057] In other embodiments, a slide rail is provided on the first crossbeam, extending along the length of the first crossbeam. A slider that cooperates with the slide rail is provided on the sliding ring sleeve, making it easier for the sliding ring sleeve to slide on the first crossbeam and preventing jamming. Preferably, three slide rails are provided, respectively disposed on the two end faces of the first crossbeam and the lower end face of the first crossbeam.

[0058] The above description is merely a specific embodiment of this utility model. Under the teachings of this utility model, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of this utility model, and the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A hoisting fixture for a mold core mold, characterized in that, The hoisting fixture includes a support frame, a rotating disk, and lifting rings; The support frame includes a first crossbeam, a second crossbeam, and a longitudinal beam. The upper end of the longitudinal beam is connected to the first end of the first crossbeam, and the lower end of the longitudinal beam is connected to the first end of the second crossbeam. The lifting ring is disposed on the first crossbeam, and the rotating disk is rotatably sleeved on the second end of the second crossbeam. The rotating disk has multiple fixing holes evenly distributed along its circumference, and each fixing hole is provided with a connector for engaging with a screw hole on the end face of the mold core.

2. The hoisting fixture for the mold core mold according to claim 1, characterized in that, The fixing hole is an oblong hole, and the length of the fixing hole extends radially along the rotating disk.

3. The hoisting fixture for the mold core mold according to claim 1, characterized in that, A rotating handle extends radially from the rotating disk.

4. The hoisting fixture for the mold core mold according to claim 1, characterized in that, The hoisting fixture also includes a supporting circular plate; The supporting circular plate is rotatably sleeved on the second end of the second crossbeam and located on the side of the rotating disk away from the longitudinal beam. When the hoisting tooling hoists the mold core mold, the supporting circular plate can enter the inner diameter of the mold core mold and provide support to the inner wall of the mold core mold.

5. The hoisting fixture for the mold core mold according to claim 4, characterized in that, The hoisting fixture also includes a limiting plate; A circular plate bearing is fitted on the second end of the second crossbeam, and the supporting circular plate is fitted on the outer circumference of the circular plate bearing. The limiting plate is fixed to the second end face of the second crossbeam by fixing screws or fixing bolts, and the limiting plate is used for axial limiting of the supporting circular plate.

6. The hoisting fixture for the mold core mold according to claim 4, characterized in that, The rotating disk is fixedly connected to the supporting circular plate.

7. The hoisting fixture for the mold core mold according to claim 4, characterized in that, A turntable bearing is fitted onto the second end of the second crossbeam, and the turntable is fitted onto the outer circumference of the turntable bearing.

8. The hoisting fixture for the mold core mold according to any one of claims 1 to 7, characterized in that, The hoisting fixture also includes a sliding ring and locking screws or locking bolts; The length of the first crossbeam is greater than the length of the second crossbeam. The sliding ring is sleeved on the first crossbeam and can slide along the length of the first crossbeam. The sliding ring has a limit screw hole. The front end of the locking screw or the locking bolt can be screwed into the limit screw hole and press against the first crossbeam. The lifting ring is fixed on the sliding ring.

9. The hoisting fixture for the mold core mold according to claim 8, characterized in that, A limiting member is provided on the second end of the first crossbeam, which is used to prevent the sliding ring from falling off from the second end of the first crossbeam.

10. The hoisting fixture for the mold core mold according to claim 8, characterized in that, The first crossbeam is provided with a slide rail, which extends along the length of the first crossbeam, and the sliding ring is provided with a slider that cooperates with the slide rail.

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