Molds, inserts, and fixtures for inserts

Abstract

The technical solution of this application provides a mold, an insert, and a fixture for the insert. The mold and the insert have mating tenons and mortises. The mortise is open at at least one extended end and forms a draft angle along the extension direction, resulting in a larger space at the opening. The tenon mates with the mortise on the mold and forms a draft angle along the extension direction, resulting in a smaller initial entry end of the tenon into the mortise. The mold and insert of this application achieve precise positioning of the mold and insert through the mating of the tenon and mortise with the draft angle, reducing the positioning accuracy requirements of the fixture and thus improving overall operational efficiency.

Description

Technical Field

[0001] This application relates to the field of molding die technology, specifically to a die, an insert, and a fixture for the insert. Background Technology

[0002] Die-casting processes produce aluminum housing parts, often involving complex internal cavity designs. Even with meticulously designed parting lines, some design elements cannot ensure smooth demolding. Therefore, it's necessary to design removable inserts as the parts on the mold that interfere with demolding. These inserts are placed before die-casting and removed before the final product is taken out, ensuring no further interference between the molded part and the mold.

[0003] In high-pressure die casting products, due to the special structure of some products, inserts need to be placed in each mold during the production process. Traditionally, this is done manually, which is inefficient. In addition, the temperature of some parts of the mold can reach more than 300°C during the placement process, posing safety hazards. Utility Model Content

[0004] In order to ensure the fitting accuracy between the insert and the mold and to provide a reasonable pick-and-place scheme to improve work efficiency, this application provides a mold, an insert, and a fixture for the insert.

[0005] This application provides a mold having a mortise that mates with a tenon on an insert, the mortise opening at at least one extended end and forming a draft angle along the extension direction, thereby increasing the space at the opening.

[0006] Alternatively, it has a tenon that mates with a mortise on the insert and forms a draft angle along the extension direction, such that the end of the tenon that first enters the mortise is smaller.

[0007] Preferably, the mortise has an opening width smaller than its internal space, and the tenon has a root width smaller than its head width.

[0008] Preferably, the draft angle is 5-15 degrees.

[0009] This application provides an insert having a mortise that mates with a tenon on a mold, the mortise opening at at least one extended end and forming a draft angle along the extension direction, thereby increasing the space at the opening.

[0010] Alternatively, it has a tenon that mates with a mortise on the mold and forms a draft angle along the extension direction, such that the end of the tenon that first enters the mortise is smaller.

[0011] Preferably, the mortise has an opening width smaller than its internal space, and the tenon has a root width smaller than its head width.

[0012] Preferably, the draft angle is 5-15 degrees.

[0013] This application provides a clamp for inserts, comprising:

[0014] At least two claws are movable for holding the insert, and the insert can be clamped when the two claws are close to each other;

[0015] A side-push cylinder is located on the side of the insert held by the claws. The side-push cylinder is used to push the insert from the side. The direction of its push is the direction in which the tenon or mortise of the insert extends.

[0016] Preferably, the claws are configured to rotate around their respective rotation axes or to move on a preset base.

[0017] The mold described in this application achieves the combined positioning of the mold and the insert through the mating of the tenon and mortise between the mold and the insert, which has a draft angle. Without requiring precise initial positioning, the guiding effect generated by the draft angle design enables a tight and precise positioning between the mold and the insert in the final state. Since precise initial positioning is not required, the positioning accuracy requirements of the fixture are reduced, thereby improving the efficiency of insert handling and overall operational efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the gearbox housing mold of this application;

[0019] Figure 2 This is a schematic diagram of the mold and insert of this application;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the mold and insert of this application;

[0021] Figure 4 This is a schematic diagram of the fixture for inserts according to this application.

[0022] In the picture:

[0023] 1: Mold; 2: Insert; 3: Fixture; 31: Finger; 32: Side-push cylinder; 91: Tenon; 92: Mortise. Detailed Implementation

[0024] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. In this specification, the dimensions of the drawings do not represent the actual size ratio. The drawings are only used to illustrate the relative positional relationship and connection relationship between the components. Components with the same name or the same reference numeral represent similar or the same structure, and are limited to illustrative purposes.

[0025] Figure 2This diagram shows a partial view of the mold 1 with the insert 2 installed, and a structural schematic of the insert 2. As shown, to achieve a reliable connection between the mold 1 and the insert 2, specifically to ensure that the insert 2 does not detach from the mold 1 after being installed, the mold 1 and the insert 2 should have a certain mating structure to achieve reliable positioning in a predetermined direction. Such a mating structure can typically be a tenon and a corresponding mortise.

[0026] Figure 1 This is one embodiment of such a fixing method. A mortise and tenon structure is provided at a preset position of the mounting insert 2 of the mold 1, and a corresponding tenon structure is provided at the corresponding position of the insert 2. The tenon and the mortise and tenon are joined to achieve a limit between the two approximately in the normal direction of the fixed surface.

[0027] As shown in the figure, the mortise has an opening width smaller than the internal space, and the corresponding tenon has a root width smaller than its head width. This is to ensure that the tenon and mortise are confined in the depth direction after they are joined. Here, "width" refers to the dimension in a specific structural direction. To achieve the joint between the tenon and mortise, the mortise is generally configured with an opening at at least one end on its side, allowing the tenon to slide into it. Once in place, it achieves the aforementioned depth-direction confinement function.

[0028] It is understood that there is no restriction on whether the tenon 91 or the mortise 92 is placed on the insert 2 or the mold 1. This means that, without further consideration, the technical solutions of placing the tenon 91 on the insert 2 and placing the tenon 91 on the mold 1 are equivalent. Furthermore, as shown in the figure, in a specific embodiment, the mortise 92 can be a dovetail groove with a trapezoidal cross-section, and the tenon 91 can be a dovetail tenon with a trapezoidal cross-section. Other cross-sectional shapes of tenons and tenons that satisfy the aforementioned conditions are also acceptable. For example, the tenon 91 and the mortise 92 can have a T-shaped cross-section, wherein the root of the tenon 91 is a fine part of the T-shaped cross-section.

[0029] To ensure a precise fit, the tenon 91 and mortise 92 require a relatively accurate fit to prevent the insert 2 from wobbling after being positioned on the mold 1. For a reliable and stable fit, preferably, the tenon 91 and mortise 92 have a certain draft angle in their respective extending directions, which is typically 5-15 degrees in practical applications. This angle setting usually allows for greater space at the side opening of the mortise 92. Figure 2As shown, when the tenon 91 is inserted into the mortise 92, due to the draft angle, there is a significant difference in width between the two as they enter the mortise 92, making it easy to align the tenon 91 with the mortise 92. In other words, the tenon 91 has greater tolerance, so it is not required to precisely align the tenon 91 with the side opening of the mortise 92. In this case, the robotic arm used to transfer and pick up the insert 2 can be set to a faster end-effector speed and the process of precise adjustment after stopping can be eliminated, thus increasing the speed of picking up and placing the insert 2 and improving production efficiency. On the other hand, with a certain draft angle, when the mortise 92 slides into place, the position compensation of the mortise 92 in the sliding direction can ensure a tight fit between the mortise 92 and the tenon 91, thereby ensuring the positioning accuracy of the insert 2.

[0030] by Figure 1 Taking the gearbox housing and its die-casting mold as an example, it is important to note that the fitting accuracy between the insert and the mold must meet the requirements to ensure the molding accuracy of the molded part in the area where the insert is located. On the other hand, since the insert needs to be picked up and placed in each molding process, this means that the operation of picking up and placing the insert will significantly affect the production efficiency of the entire molding process. Therefore, improving the efficiency of picking up and placing the insert is also an important aspect.

[0031] Based on the connection relationship between the mold 1 and the insert 2 described above, this application also provides a clamp for the insert. For example... Figure 3 As shown, at least two claws 31 are movable for clamping the insert 2. In the illustrated embodiment, the two claws 31 are arranged relatively movable, and can clamp the insert 2 when the two claws 31 are close to each other. The two claws 31 can be configured to rotate about their respective axes of rotation or to move on a given base. Regardless of rotation or translation, the actuating ends of the two claws 31 can always be brought close together to clamp the insert 2. Embodiments with more than two claws 31 are also possible, in which case the multiple claws 31 can be arranged circumferentially around the insert 2 to achieve the purpose of clamping the insert 2 from different directions.

[0032] Regarding the gripper 31, when holding the insert 2, the clamp 3 can initially place the insert 2 into the tenon 92 of the mold 1. However, due to the limited precision of the clamp and the moving parts containing the clamp, such as the robotic arm, it is not required that the clamp 3 completely place the insert 2 in place. If this is required, the mismatch between the position of the clamp 3 and the mold 1 may cause a relatively large lateral force to be generated inside the system. This is detrimental to the reliable operation of the system.

[0033] Therefore, in addition to the above, the clamp 3 also includes a side-push cylinder 32 disposed on the side of the insert 2 held by the claw 31. The side-push cylinder 32 is used to push the insert 2 laterally from the side of the insert 2. The direction of pushing is generally the direction in which the tenon 91 or the mortise 92 of the insert 2 extends. After the insert 2 is initially placed into the mold 1, the claw 31 releases the insert 2, and then the side-push cylinder 32 operates to push the insert 2 into place. When removing the insert, the claw 31 simply holds the insert 2 and then removes it from the mold 1.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application shall fall within the protection scope defined by the claims of this application.

Claims

1. A mold for accepting the installation of an insert (2), characterized in that, It has a mortise (92) that mates with a tenon (91) on the insert (2), the mortise (92) opening at at least one end of the extension and forming a draft angle along the extension direction, so that the space at the opening is larger; Alternatively, it may have a tenon (91) that mates with a mortise (92) on the insert (2) and forms a draft angle along the extension direction such that the end of the tenon (91) that first enters the mortise (92) is smaller.

2. The mold as described in claim 1, characterized in that, The mortise (92) has an opening width smaller than its internal space, and the tenon (91) has a root width smaller than its head width.

3. The mold as described in claim 1, characterized in that, The draft angle is 5-15 degrees.

4. An insert, removably disposed on a mold (1), characterized in that, It has a mortise (92) that mates with a tenon (91) on the mold (1), the mortise (92) opening at at least one end of the extension and forming a draft angle along the extension direction, so that the space at the opening is larger; Alternatively, it may have a tenon (91) that mates with a mortise (92) on the mold (1) and forms a draft angle along the extension direction such that the end of the tenon (91) that first enters the mortise (92) is smaller.

5. The insert as described in claim 4, characterized in that, The mortise (92) has an opening width smaller than its internal space, and the tenon (91) has a root width smaller than its head width.

6. The insert as claimed in claim 4, characterized in that, The draft angle is 5-15 degrees.

7. A clamp for inserts, characterized in that, include: At least two claws (31) are movable for holding the insert (2), and the two claws (31) can clamp the insert (2) when they are close to each other; A side-push cylinder (32) is provided on the side of the insert (2) held by the claw (31). The side-push cylinder (32) is used to push the insert (2) from the side of the insert (2); the direction of its push is the direction in which the tenon (91) or the mortise (92) of the insert (2) extends.

8. The clamp as described in claim 7, characterized in that, The claws (31) are configured to rotate around their respective rotation axes or to move on a preset base.

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