Quick release structure and quick release method for embedded insert of mold

Abstract

The invention relates to the technical field of mold machining, in particular to a mold embedded type insert quick release structure and a quick release method. The insert is detachably embedded into a mold body, and at least one positioning hole penetrating through the body of the insert is formed in the insert; a matching surface matched with a dismounting tool is machined along the inner wall of the positioning hole; and the dismounting tool is matched with the matching surface after being inserted into the positioning hole, so that axial ejection force or drawing force is generated, and the insert is ejected out or pulled out of the mold body in the direction opposite to the embedding direction of the insert. According to the invention, the original insert structure is improved, and the tedious operation of manufacturing the structure on the mold is avoided through the mode of firstly tapping and then carrying out heat treatment in the through hole, so that the manufacturing and processing cost is low. And through two corresponding dismounting methods, the insert can be rapidly dismounted from the front side, and the maintenance cost in the production process is reduced.

Description

Technical Field

[0001] This invention relates to the field of mold processing technology, and in particular to a quick-release structure and method for mold embedded inserts. Background Technology

[0002] Molds are an indispensable and crucial element in industrial production. In actual mold manufacturing, to reduce production costs, inserts are often made in vulnerable positions such as cutting edges or forming points. Replacing these inserts later helps control mold maintenance costs during production. Furthermore, to ensure precise positioning and longevity of the inserts, they are typically embedded entirely into the mold. This allows for accurate positioning and even stress distribution during production, thus extending their lifespan and preventing cracking.

[0003] However, since the insert is embedded entirely in the mold, quick replacement becomes a problem. Currently, locking structures are typically made on the side of the insert or deadbolts are made on the reverse side. Replacing the insert requires tapping it through pre-drilled holes on the reverse side, a cumbersome process that necessitates additional mold construction. Furthermore, tapping the insert may deform its mating surfaces, causing unnecessary damage. Now, with a quick-release structure and method, embedded inserts can be removed directly from the front side of the insert. The entire disassembly process is simple and quick without the need for additional mold structures, thereby reducing mold processing costs and mold maintenance costs. Importantly, it can be disassembled without damage to the insert mating surfaces. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a quick-release structure and method for mold-embedded inserts.

[0005] The technical solution of the present invention, the first aspect of the present invention provides a mold embedded insert quick-release structure, including a detachable insert embedded in the mold body, the insert having at least one positioning hole penetrating its body; and a mating surface that cooperates with a disassembly tool is machined along the inner wall of the positioning hole. After the disassembly tool is inserted into the positioning hole, it engages with the mating surface to generate an axial ejection force or pull-out force, which ejects or pulls the insert from the mold body in the opposite direction to its embedding direction.

[0006] Preferably, the positioning hole is a through hole for installing a fixing screw; the mating surface is machined with threads one size larger than the inner diameter of the positioning hole, so that the threads on the mating surface can directly engage with the threaded end of the disassembly tool.

[0007] Preferably, the disassembly tool enters the positioning hole and connects with the mating surface by rotating.

[0008] Preferably, the insert is heat-treated to give the threads on the mating surface sufficient strength to withstand the pull-out or ejection force during disassembly.

[0009] Preferably, the disassembly tool is an ejector screw; After the ejector screw is screwed into the positioning hole, it engages with the mating surface and its end abuts against the mold body. When the ejector screw is rotated further, its threads mesh with the mating surface, generating an axial ejection force that ejects the insert relative to the mold body.

[0010] Preferably, the disassembly tool is a pin puller with a threaded end; After the threaded end of the pin puller is screwed into the positioning hole, it connects with the mating surface; by operating the impact or pulling mechanism of the pin puller, a pulling force is generated to pull the insert out of the mold body.

[0011] Preferably, the pin puller is equipped with a gravity block, and the insert is removed by repeatedly pulling the gravity block.

[0012] A second aspect of the present invention provides a quick-release method for a mold-embedded insert, which uses the above-described quick-release structure and includes the following specific steps: S1. A insert is provided, the insert having a positioning hole with a mating surface; S2. Embed the insert into the pre-set cavity of the mold body; S3. When it is necessary to remove the insert, screw the threaded end of a removal tool into the positioning hole of the insert from the front of the mold and make it mate with the mating surface. S4. Operate the disassembly tool to generate a force acting on the insert in the opposite direction to its embedding direction, and remove the insert from the mold body.

[0013] Preferably, the insert is fully or partially embedded relative to the mold body.

[0014] Preferably, when using an ejector screw as a disassembly tool, the ejector screw is continuously screwed into the positioning hole until the end of the ejector screw is blocked by the mold body. The ejector screw is then rotated to slowly eject the insert from the mold body using the relative movement of the threaded pair. When using a pin puller as a disassembly tool, screw the threaded end of the pin puller fully into the positioning hole, operate the impact hammer or pulling handle of the pin puller, and pull the insert out of the mold body by instantaneous impact force or continuous pulling force.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention improves upon the original insert structure by tapping the holes before heat treatment, thus avoiding the cumbersome process of creating the structure on the mold and reducing manufacturing costs.

[0016] By employing two corresponding disassembly methods, the insert can be quickly removed from the front, reducing maintenance costs during the production process.

[0017] Since the screw threads inside the insert are what enable disassembly, even if the screw threads are damaged later, it is only necessary to re-enlarge the hole and tap the threads, which effectively improves the service life of the insert. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure in which the insert is fully embedded in the mold body in an embodiment of the present invention; Figure 2 This is one of the schematic diagrams of the state structure in which the insert is removed using an ejector screw in an embodiment of the present invention; Figure 3 This is the second schematic diagram of the state structure in which the insert is removed using the ejector screw in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure for removing the insert using a pin puller in an embodiment of the present invention; Figure 5 This is a cross-sectional structural diagram of the insert and the mold body in an embodiment of the present invention; Figure 6 This is a schematic diagram of the connection structure between the pin puller and the insert in an embodiment of the present invention; Figure 7 This is a schematic diagram of the connection structure between the ejector screw and the insert in an embodiment of the present invention.

[0019] Reference numerals: 1. Mold body; 2. Insert; 21. Positioning hole; 3. Mating surface; 4. Puller pin; 5. Ejector screw. Detailed Implementation Example 1

[0020] like Figure 1 As shown, this embodiment provides a quick-release structure for a mold embedded insert, including a detachable insert 2 embedded in the mold body 1. The insert 2 is provided with at least one positioning hole 21 penetrating its body; a mating surface 3 that cooperates with a disassembly tool is machined along the inner wall of the positioning hole 21. After the disassembly tool is inserted into the positioning hole 21, it engages with the mating surface 3, generating an axial ejection or pull-out force to eject or pull out the insert 2 from the mold body 1 in the opposite direction to its embedding direction. The positioning hole 21 is a through hole for installing a fixing screw; the mating surface 3 is machined with threads one size larger than the inner diameter of the positioning hole 21, so that the threads of the mating surface 3 can directly mesh with the threaded end of the disassembly tool. For example, tapping can be performed at the through hole position where the fixing screw hole of the insert 2 is originally located. Since the thread is a standard specification, machining a thread one size larger at this location is sufficient; for example, an M12 thread hole can be machined at the through hole of an M10 screw, and the characteristic that the insert 2 itself must undergo heat treatment indirectly ensures the strength of the internal thread. Compared with the prior art, only the step of machining threads on the insert 2 is required.

[0021] In this embodiment, the disassembly tool can be rotated to enter the positioning hole 21 and connect with the mating surface 3.

[0022] like Figure 2-3 As shown, when the disassembly tool is the ejector screw 5; after the ejector screw 5 is screwed into the positioning hole 21, it is connected to the mating surface 3. Its end abuts against the mold body 1. When the ejector screw 5 is rotated, it meshes with the threads of the mating surface 3. Under the mutual meshing of the threads of the screw and the threads in the through hole of the insert, the screw acts as a fulcrum and generates an axial ejection force. The insert 2 slowly rises and is ejected relative to the mold body 1.

[0023] like Figure 4 As shown, when the disassembly tool is a pin puller 4 with a threaded end; after the threaded end of the pin puller 4 is screwed into the positioning hole 21, it is connected to the mating surface 3; by operating the impact or pulling mechanism of the pin puller 4, a pulling force is generated to pull the insert 2 out of the mold body 1.

[0024] As a preferred solution, the pin puller can be equipped with a gravity block. By repeatedly pulling the gravity block, the insert 2 can be removed using continuous vibration, without damaging the mating contact surface between the insert 2 and the mold body 1.

[0025] By modifying the original positioning holes of the inserts into internal threaded disassembly interfaces, front-side, non-destructive, and rapid disassembly of the mold inserts is achieved. This solution revolutionizes the traditional, cumbersome, and damaging method of hammering from the back of the mold, transforming uncontrollable radial impact force into precise and controllable axial ejection or pull-out force, thus perfectly protecting the precision mating surfaces of the insert and the mold body. Furthermore, this design requires no structural modifications to the mold body; all improvements are made only to the replaceable inserts, significantly reducing mold processing and maintenance costs, and improving the repairability and lifespan of the inserts, providing a revolutionary solution for mold maintenance. Example 2

[0026] This embodiment provides a quick-release method for mold-embedded inserts, which uses the quick-release structure in Embodiment 1 and includes the following specific steps: S1. Provide an insert 2, which has a positioning hole 21 with a mating surface 3; S2. Embed the insert 2 into the preset cavity of the mold body 1; S3. When it is necessary to remove the insert 2, screw the threaded end of a removal tool into the positioning hole 21 of the insert 2 from the front of the mold and make it mate with the mating surface 3. S4. Operate the disassembly tool to generate a force acting on the insert 2 in the opposite direction to its embedding direction, and remove the insert 2 from the mold body 1.

[0027] In this embodiment, the insert 2 can be fully embedded or partially embedded relative to the mold body 1. For both fully embedded and partially embedded structures, the method of this application can be used to remove the insert 2 from the front without damaging the mold body 1. Furthermore, no additional structure needs to be made on the mold body 1, thus reducing costs.

[0028] In this embodiment, as Figure 7 As shown, when using the ejector screw 5 as a disassembly tool, the ejector screw 5 is continuously screwed into the positioning hole 21 until the end of the ejector screw 5 is blocked by the mold body 1. Continue to rotate the ejector screw 5, and use the relative movement of the threaded pair to slowly eject the insert 2 from the mold body 1. like Figure 5-6 As shown, when using the pin puller 4 as a disassembly tool, the threaded end of the pin puller 4 is fully screwed into the positioning hole 21, and the impact hammer or pulling handle of the pin puller 4 is operated to pull the insert 2 out of the mold body 1 by instantaneous impact force or continuous pulling force.

[0029] In practical applications, this quick-release structure and method for mold-embedded inserts demonstrate significant advantages. Firstly, in terms of manufacturing, since only thread machining is required on the insert, the cumbersome operation of creating additional structures on the mold body is avoided, greatly reducing manufacturing costs. Secondly, this structure is widely applicable to different types of molds and inserts; whether small precision molds or large complex molds, quick assembly and disassembly can be achieved by adjusting the specifications of the insert's positioning holes and mating surfaces.

[0030] In production and maintenance, this quick-release structure and method significantly improves work efficiency. Previously, replacing inserts required a significant amount of time involving mold disassembly and reverse hammering. Now, inserts can be quickly removed and installed simply by using the appropriate disassembly tools from the front of the mold, reducing production line downtime and increasing production efficiency. Furthermore, the front-side disassembly method avoids potential damage to the insert's mating surfaces caused by reverse hammering, effectively extending the insert's lifespan and reducing mold maintenance costs.

[0031] Furthermore, this quick-release structure and method also exhibits excellent stability and reliability. The heat-treated insert mating threads possess sufficient strength to withstand pull-out or ejection forces during disassembly, ensuring the safety and stability of the process. Simultaneously, the well-designed disassembly tools, such as the ejector screws and pin pullers, are simple and convenient to operate, accurately applying force to the inserts for smooth disassembly and installation.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A quick-release structure for a mold-embedded insert, comprising a detachable insert (2) embedded in a mold body (1), characterized in that, The insert (2) has at least one positioning hole (21) that penetrates its body; a mating surface (3) that cooperates with the disassembly tool is machined along the inner wall of the positioning hole (21); After the disassembly tool is inserted into the positioning hole (21), it engages with the mating surface (3) to generate an axial ejection force or a pulling force, which ejects or pulls the insert (2) from the mold body (1) in the opposite direction of its embedding direction.

2. The quick-release structure for a mold-embedded insert according to claim 1, characterized in that, The positioning hole (21) is a through hole for installing the fixing screw; the mating surface (3) is machined with a thread that is one size larger than the inner diameter of the positioning hole (21) so that the thread of the mating surface (3) can directly mesh with the threaded end of the disassembly tool.

3. The quick-release structure for a mold-embedded insert according to claim 1, characterized in that, The disassembly tool enters the positioning hole (21) by rotating and connects with the mating surface (3).

4. The quick-release structure for a mold-embedded insert according to claim 1, characterized in that, The insert (2) is heat-treated so that the threads of the mating surface (3) have sufficient strength to withstand the pull-out force or ejection force during disassembly.

5. A mold-embedded insert quick-release structure according to any one of claims 1-4, characterized in that, The disassembly tool is an ejector screw (5); After the ejector screw (5) is screwed into the positioning hole (21), it is connected to the mating surface (3). Its end abuts against the mold body (1). When the ejector screw (5) is rotated, it engages with the thread of the mating surface (3) to generate an axial ejection force that ejects the insert (2) relative to the mold body (1).

6. A mold-embedded insert quick-release structure according to any one of claims 1-4, characterized in that, The disassembly tool is a pin puller with a threaded end (4); After the threaded end of the pin puller (4) is screwed into the positioning hole (21), it is connected to the mating surface (3); by operating the impact or pulling mechanism of the pin puller (4), a pulling force is generated to pull the insert (2) out of the mold body (1).

7. The quick-release structure for a mold-embedded insert according to claim 6, characterized in that, The pin puller is equipped with a gravity block, and the insert (2) is removed by repeatedly pulling the gravity block.

8. A quick-release method for a mold-embedded insert, using the quick-release structure described in any one of claims 1-7, characterized in that, The specific steps include the following: S1. Provide an insert (2) having a positioning hole (21) with a mating surface (3); S2. Embed the insert (2) into the pre-set cavity of the mold body (1); S3. When it is necessary to disassemble the insert (2), screw the threaded end of a disassembly tool into the positioning hole (21) of the insert (2) from the front of the mold and make it fit with the mating surface (3); S4. Operate the disassembly tool to generate a force acting on the insert (2) in the opposite direction to its embedding direction, and remove the insert (2) from the mold body (1).

9. A quick-release method for a mold-embedded insert according to claim 8, characterized in that, The insert (2) is either fully embedded or partially embedded relative to the mold body (1).

10. A quick-release method for a mold-embedded insert according to claim 8, characterized in that, When using the ejector screw (5) as a disassembly tool, continuously screw the ejector screw (5) into the positioning hole (21) until the end of the ejector screw (5) is blocked by the mold body (1). Continue to rotate the ejector screw (5) and use the relative movement of the thread pair to slowly eject the insert (2) from the mold body (1). When using the pin puller (4) as a disassembly tool, screw the threaded end of the pin puller (4) completely into the positioning hole (21), operate the impact hammer or pull handle of the pin puller (4), and pull the insert (2) out of the mold body (1) by instantaneous impact force or continuous pulling force.

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