A non-synchronous inward retraction mold opening mechanism and mold opening method

Abstract

This invention belongs to the field of precision casting investment mold technology, and discloses a non-synchronous internal retraction mold opening mechanism and method. It includes: a bottom cover plate, screws, a rotating disk cover plate, a rotating disk, an internal retraction moving rod, a base, a rotating rod, and a rotating rod handle. The bottom cover plate is fastened to the base with screws. The base has eight internal retraction track grooves for the internal retraction moving rod to move on, achieving internal retraction mold opening. The rotating rod handle is installed on the rotating rod, and the rotating rod is fastened to the rotating disk cover plate with screws. A gap is left between the rotating rod and the bottom cover plate and the base. Moving the rotating rod handle drives the rotating rod, rotating disk cover plate, and rotating disk to rotate, ensuring uniform force during wax pattern opening, improving wax pattern forming rate, and reducing operational complexity.

Description

Technical Field

[0001] This invention belongs to the field of precision casting investment mold technology, and particularly relates to a non-synchronous internal retraction mold opening mechanism and mold opening method. Background Technology

[0002] Currently, after the wax is poured into the mold in the precision casting investment mold, manual mold opening or a bottom ejection mechanism is mostly used for mold opening. For thin-walled wax molds, the ejection mechanism is not suitable, as it can easily cause the wax pattern to deform and crack. Generally, manual disassembly and assembly of each piece is carried out. For ring-shaped wax patterns, this operation is not only complicated but also inefficient. When opening the mold and removing pieces, the wax pattern is prone to uneven stress, resulting in local deformation and other problems. Summary of the Invention

[0003] The technical problem solved by this invention is to provide a non-synchronous inward shrinkage mold opening mechanism and mold opening method, which makes the wax pattern mold opening force uniform, improves the wax pattern forming rate, and reduces the complexity of operation.

[0004] To achieve the above objectives, the present invention employs the following technical solution.

[0005] On one hand, the present invention provides a non-synchronous inward retraction mold opening mechanism, the mechanism comprising: a bottom cover plate 1, screws 2, a rotating disk cover plate 3, a rotating disk 4, an inward retraction moving rod 5, a base 7, a rotating rod 8, and a rotating rod handle 9;

[0006] The bottom cover plate 1 is fastened to the base 7 with screws 2. The base 7 has 8 inward-retracting track grooves for the inward-retracting moving rod 5 to move on it, so as to realize the inward retraction and mold opening of the mold. The rotating rod handle 9 is installed on the rotating rod 8. The rotating rod 8 is fastened to the rotating disk cover plate 3 with screws. There is a gap between the rotating rod 8 and the bottom cover plate 1 and the base 7. The rotating rod handle 9 is used to drive the rotating rod 8, the rotating disk cover plate 3 and the rotating disk 4 to rotate.

[0007] Furthermore, the rotating disk cover 3 and the rotating disk 4 adopt a disc structure and are fastened with screws to facilitate rotational movement.

[0008] Furthermore, the mechanism also includes: a deep groove ball bearing 6;

[0009] The deep groove ball bearing is installed between the base, the rotating disk cover plate, and the rotating disk. The rotating disk cover plate 3, the rotating disk 4, and the base 7 are all interference-fitted with the deep groove ball bearing 6 to ensure that there is a gap between them and the bottom cover plate 1 so that they do not come into contact.

[0010] Furthermore, the rotating disk 4 has two sets of eight spiral track grooves numbered 1-8 in sequence, and each groove is equipped with an inwardly retractable moving rod 5;

[0011] Among them, the numbers 1, 3, 5 and 7 mark the first group of spiral track grooves, and the numbers 2, 4, 6 and 8 mark the second group of circular + spiral track grooves.

[0012] Furthermore, spiral grooves are used to convert rotational motion into uniform linear motion, while circular grooves are used to achieve the effect of only rotating without moving.

[0013] Furthermore, the bottom of the inward-retracting moving rod 5 is spherical to reduce friction; it is clearance-fitted with the rotating disk 4 to facilitate movement within the track groove.

[0014] Secondly, the present invention also provides a mold opening method for a non-synchronous inward retraction mold opening mechanism, wherein the mold opening method is applied to the mold opening mechanism described in the first aspect, and the method is as follows:

[0015] When the rotating rod handle rotates within a certain range, it drives the rotating disk to rotate, and the inward moving rod moves in the groove through a spiral. Through two sets of different types of track grooves, the inward moving rod is driven to achieve asynchronous inward mold opening movement.

[0016] Furthermore, the method specifically involves: when the first set of retractable moving rods 5 retracts inward, they remain stationary; after the first set of retractable moving rods 5 moves a preset distance, the second set of retractable moving rods 5 in the circular + spiral track groove moves linearly at a uniform speed along the spiral groove, thereby realizing a non-synchronous retraction mold opening mechanism of the two sets of retractable moving rods 5, ensuring uniform and stable mold opening.

[0017] This invention provides a mold opening mechanism for a circular thin-walled wax pattern casting mold that performs asynchronous inward retraction after wax injection. This mechanism can ensure uniform force when the wax pattern is opened, and at the same time realize the inward retraction movement of the movable blocks inside the mold in groups, thereby improving the wax pattern forming rate and operability. Attached Figure Description

[0018] Figure 1 This is a top view schematic diagram of a non-synchronous inward retraction mold opening mechanism provided in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a non-synchronous inward retraction mold opening mechanism provided in an embodiment of the present invention;

[0020] Figure 3 This is a top view of an asynchronous inward retraction mold opening mechanism without a bottom cover plate, provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the initial position of a non-synchronous inward retraction mold opening mechanism with 8 moving blocks, provided in an embodiment of the present invention.

[0022] Figure 5This is a schematic diagram of a non-synchronous inward retraction mold opening mechanism provided by an embodiment of the present invention. After the handle is rotated at a certain angle, the inward retraction moving rod drives the block to move a certain distance. Detailed Implementation

[0023] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] Example 1

[0025] The main structure of the asynchronous inward retraction mold opening mechanism of the present invention includes: a bottom cover plate, screws, a rotating disk cover plate, a rotating disk, an inward retraction moving rod, a deep groove ball bearing, a base, a rotating rod, and a rotating rod handle.

[0026] The bottom cover plate is fastened to the base with screws. The base has eight inward-retracting track grooves for the inward-retracting moving rod to move along them, thus achieving the inward retraction and opening of the mold. The rotating rod handle is used to rotate the rotating rod, the rotating disk cover plate, and the rotating disk.

[0027] Deep groove ball bearings are installed between the base, the rotating disk cover, and the rotating disk to reduce friction and facilitate smooth rotation. The rotating disk has two sets (eight in total) of helical grooves, within which retractable moving rods are installed to achieve movement. The first set of helical grooves is marked with numbers 1, 3, 5, and 7, while the second set, marked with numbers 2, 4, 6, and 8, consists of circular and helical grooves. The helical grooves convert rotational motion into uniform linear motion, while the circular grooves allow for rotation without movement. The second set, marked with 2, 4, 6, and 8, uses a circular and helical groove design, ensuring that the first set of retractable moving rods remains stationary while retracting inward; after the first set has moved the required distance, it then moves uniformly linearly along the helical grooves. This creates a asynchronous retraction mechanism between the two sets of retractable moving rods, ensuring uniform and smooth mold opening.

[0028] The rotating disk cover and rotating disk adopt a disc structure, which facilitates rotational movement.

[0029] The rotating disk cover, rotating disk, and deep groove ball bearing are fitted with an interference fit.

[0030] The base and the deep groove ball bearing are interference fit.

[0031] The bottom of the inward-retracting moving rod has a spherical shape to reduce friction.

[0032] The rotating rod is fastened to the rotating disk cover plate with screws. After the rotating disk cover plate is fastened to the rotating disk, a gap should be left between it and the bottom cover plate and the base.

[0033] The retractable moving rod and the rotating disk are fitted with a clearance.

[0034] Example 2

[0035] The main structure of the asynchronous inward retraction mold opening mechanism described in this invention is as follows: Figure 1 , Figure 2 and Figure 3 As shown, it includes: bottom cover plate 1, screw 2, rotating disk cover plate 3, rotating disk 4, inward moving rod 5, deep groove ball bearing 6, base 7, rotating rod 8, and rotating rod handle 9.

[0036] The bottom cover plate 1 is fastened to the base 7 with screws 2. The base 7 has 8 inward retraction track grooves, which are used for the inward retraction moving rod 5 to move on them, so as to realize the inward retraction and mold opening of the mold.

[0037] The handle 9 of the rotating rod is installed on the rotating rod 8. The rotating rod 8 is fastened to the rotating disk cover plate 3 with screws. A gap should be left between the rotating rod 8 and the bottom cover plate 1 and the base 7 to avoid contact and increase friction.

[0038] The rotating disk cover 3 and the rotating disk 4 adopt a disc structure and are fastened with screws to facilitate rotation.

[0039] The rotating handle 9 is moved by rotating the rotating rod, which drives the rotating rod 8, the rotating disk cover plate 3 and the rotating disk 4 to rotate.

[0040] Deep groove ball bearings are installed between the base, the rotating disk cover plate, and the rotating disk to reduce friction and facilitate smooth rotation.

[0041] The rotating disk 4 has two sets (eight in total) of helical track grooves, within which retractable moving rods 5 are installed. The first set of helical track grooves is marked with numbers 1, 3, 5, and 7, while the second set, marked with numbers 2, 4, 6, and 8, consists of circular and helical track grooves. The helical grooves convert rotational motion into uniform linear motion, while the circular grooves allow for rotation without movement. The second set, marked with numbers 2, 4, 6, and 8, uses a circular and helical track groove design. This allows the first set of retractable moving rods 5 to remain stationary while retracting inward; after the first set has moved the required distance, it then moves uniformly linearly along the helical grooves. This creates a asynchronous retraction mechanism for the two sets of retractable moving rods 5, ensuring uniform and stable mold opening (e.g., ...). Figure 4 and Figure 5 (As shown).

[0042] Among them, the rotating disk cover plate 3, rotating disk 4 and base 7 and deep groove ball bearing 6 should all be interference fit to ensure that there is a gap with the bottom cover plate 1 and that they do not contact each other.

[0043] The bottom of the inward-retracting moving rod 5 is spherical to reduce friction. It has a clearance fit with the rotating disk 4 to facilitate movement within the track groove.

[0044] Example 3

[0045] The present invention also provides a mold opening method for a non-synchronous inward retraction mold opening mechanism, the method being:

[0046] When the rotating rod handle rotates within a certain range, it drives the rotating disk to rotate, and the inward moving rod moves in the groove through a spiral. Through two sets of different types of track grooves, the inward moving rod is driven to achieve asynchronous inward mold opening movement.

[0047] Furthermore, the method specifically involves: when the first set of retractable moving rods 5 retracts inward, they remain stationary; after the first set of retractable moving rods 5 moves a preset distance, the second set of retractable moving rods 5 in the circular + spiral track groove moves linearly at a uniform speed along the spiral groove, thereby realizing a non-synchronous retraction mold opening mechanism of the two sets of retractable moving rods 5, ensuring uniform and stable mold opening.

[0048] When the rotating handle of this invention rotates within a certain range, it drives the rotating disk to rotate, and the inward moving rod moves through the spiral groove, achieving uniform linear movement within the groove on the base. By using two sets of different types of track grooves, the inward moving rod achieves asynchronous inward retraction and mold opening movement, ensuring smooth mold opening and simple operation.

Claims

1. A non-synchronous inward draw mold opening mechanism characterized by, The mechanism includes: a bottom cover plate (1), screws (2), a rotating disk cover plate (3), a rotating disk (4), an inward moving rod (5), a base (7), a rotating rod (8), and a rotating rod handle (9). The bottom cover plate (1) is fastened to the base (7) with screws (2). The base (7) has 8 inward-shrinking track grooves for the inward-shrinking moving rod (5) to move on it, so as to realize the inward-shrinking mold opening. The rotating rod handle (9) is installed on the rotating rod (8). The rotating rod (8) is fastened to the rotating disk cover plate (3) with screws. There is a gap between the rotating rod (8) and the bottom cover plate (1) and the base (7). The rotating rod handle (9) is used to drive the rotating rod (8), the rotating disk cover plate (3) and the rotating disk (4) to rotate. The rotating disk (4) has two sets of eight spiral track grooves numbered 1-8 in sequence, and inward moving rods (5) are installed in the grooves respectively; among them, the first set of spiral track grooves are marked with numbers 1, 3, 5 and 7, and the second set of circular + spiral track grooves are marked with numbers 2, 4, 6 and 8. The spiral track groove is used to convert the rotational motion of the rotating disk (4) into the uniform linear motion of the retractable moving rod (5), while the circular groove is used to achieve the effect that the rotating disk (4) rotates while the retractable moving rod (5) does not move.

2. A non-synchronous inward power draw mechanism according to claim 1, wherein, The rotating disk cover (3) and the rotating disk (4) adopt a disc structure and are fastened with screws to facilitate rotational movement.

3. A non-synchronous inward power draw mechanism according to claim 1, wherein, The mechanism also includes: a deep groove ball bearing (6); The deep groove ball bearing (6) is installed between the base (7), the rotating disk cover plate (3) and the rotating disk (4). The rotating disk cover plate (3), the rotating disk (4) and the base (7) are all interference fit with the deep groove ball bearing (6) to ensure that there is a gap with the bottom cover plate (1) and that they do not contact each other.

4. A non-synchronous inward power draw mechanism according to claim 1, wherein, The bottom of the inward moving rod (5) is spherical to reduce friction; it is clearance-fitted with the rotating disk (4) to facilitate movement in the track groove.

5. A method of opening a die of a non-synchronous die retraction mechanism, the method comprising: The mold opening method is applied to the mold opening mechanism as described in any one of claims 1-4, and the method is as follows: When the rotating rod handle rotates within a certain range, it drives the rotating disk to rotate, and the inward moving rod moves in the spiral track groove; through two sets of track grooves of different types, the inward moving rod is driven to achieve asynchronous inward mold opening movement; The method is as follows: when the first set of inward moving rods (5) retracts inward, the second set of inward moving rods (5) located in the circular track groove remains stationary; after the first set of inward moving rods (5) moves a preset distance, the second set of inward moving rods (5) in the circular + spiral track groove moves in a straight line at a constant speed along the spiral track groove, so as to realize that the two sets of inward moving rods (5) retract asynchronously.

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