An exhaust structure for a casting mold

Abstract

The utility model relates to a kind of exhaust structure for casting mould, including mould body, ejector rod sleeve and sleeve structure, the sleeve structure of the mould body inside installation is inserted into the upper end of mould body upper end face, the ejector rod sleeve of the sleeve structure lower side installation is inserted into the top of upper end and sleeve structure, the outer thread exhaust plug of the ejector rod sleeve lower end is embedded and installed, the middle part of the sleeve structure and ejector rod sleeve is provided with exhaust passage, the outer thread exhaust plug is provided with several exhaust through-hole communicated with exhaust passage inside.The utility model has the characteristics of convenient realization online replacement, improve connection strength, simplify installation process, avoid repeatedly replace etc.

Description

Technical Field

[0001] This utility model relates to the field of exhaust structure technology for die casting molds, and in particular to an exhaust structure for casting molds. Background Technology

[0002] If the gas inside the mold cavity cannot be discharged in time during the casting filling process, it will cause defects such as porosity, flow marks, and cold shuts in the casting. Traditional venting solutions often use wire-cut vent plugs, one-line vent plugs, honeycomb vent plugs, or embedded permeable steel, but they have the following problems: 1. Venting components cannot be replaced online; 2. The connection of the venting structure is not firm and is easy to fall off; 3. The installation is cumbersome. In order to solve the above problems, the venting structure needs to be modified. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a venting structure for casting molds, which has the characteristics of convenient online replacement, improved connection strength, simplified installation process, and avoidance of repeated replacement.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to provide a venting structure for casting molds, including a mold body, a push rod sleeve and a sleeve structure. The sleeve structure with its upper end protruding from the upper end face of the mold body is installed in the mold body. The push rod sleeve with its upper end abutting against the sleeve structure is installed on the lower side of the sleeve structure. An external threaded vent plug is embedded in the lower end of the push rod sleeve. A venting channel is provided in the middle of the sleeve structure and the push rod sleeve. The external threaded vent plug is provided with a plurality of venting holes communicating with the venting channel.

[0005] In this technical solution, a sleeve structure is set up to connect with the cavity inside the mold cavity structure, and an ejector sleeve is installed to connect with the external threaded vent plug. The external threaded vent plug is used for venting and also facilitates the connection between the external threaded vent plug and the ejector sleeve, thereby facilitating the replacement of functions on the production line. At the same time, by setting up several venting holes, it is ensured that the production of the mold will not be affected by local blockage, thus improving the service life of the venting structure.

[0006] As a supplement to this technical solution, a pressure plate for fixing the upper end of the sleeve structure is installed on the upper surface of the mold body. By installing the pressure plate, it is convenient to fix the sleeve structure.

[0007] As a supplement to this technical solution, the upper end of the top rod sleeve is provided with an outwardly protruding limiting ring, and a rubber ring is embedded and sleeved on the lower side of the limiting ring of the top rod sleeve. The limiting ring is used to limit the position of the top rod sleeve, and the rubber ring is used to ensure the sealing at this point.

[0008] As a supplement to this technical solution, the external threaded vent plug includes an external threaded assembly and an inner core. The outer ring of the external threaded assembly is provided with an external thread. The external threaded assembly and the push rod sleeve are matched by the external thread. The inner core is installed inside the external threaded assembly. The inner core is aligned with the venting channel. The venting through hole is arranged at the inner core.

[0009] An independent inner core is provided to facilitate the machining of the vent hole, while an external threaded fitting is provided to facilitate docking with the top rod sleeve.

[0010] As a supplement to this technical solution, a rectangular slot is provided at the middle position of the lower end of the external threaded vent plug, which extends through the front and rear sides. By providing the rectangular slot, it is convenient to rotate the external threaded vent plug, so that the external threaded vent plug can enter the top rod sleeve, simplifying the assembly between the two.

[0011] Beneficial effects: This utility model relates to a venting structure for casting molds. It uses a sleeve structure to connect with the cavity inside the mold cavity structure, and a push rod sleeve to connect with the external threaded vent plug. The external threaded vent plug is used for venting and also facilitates connection between the external threaded vent plug and the push rod sleeve, thus enabling convenient online replacement. At the same time, by setting several venting holes, it is ensured that the venting holes will not affect the production of the mold due to local blockage, thereby improving the service life of the venting structure. It has the characteristics of convenient online replacement, improved connection strength, simplified installation process, and avoidance of repeated replacement. Attached Figure Description

[0012] Figure 1 This is a full sectional view of the present invention;

[0013] Figure 2 This is a top view of the external threaded vent plug described in this utility model;

[0014] Figure 3 This is a utility model Figure 1 A magnified view of a portion of point A in the middle.

[0015] Diagram: 1. Pressure plate, 2. Mold body, 3. Sleeve structure, 4. Top rod sleeve, 5. Vent channel, 6. Rubber ring, 7. External thread vent plug, 8. Rectangular groove, 9. External thread kit, 10. Inner core, 11. Vent hole. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] The embodiments of this utility model relate to a venting structure for casting molds, such as... Figure 1 — Figure 3 As shown, the device includes a mold body 2, a push rod sleeve 4, and a sleeve structure 3. The sleeve structure 3, with its upper end protruding from the upper surface of the mold body 2, is installed inside the mold body 2. The push rod sleeve 4, with its upper end abutting against the sleeve structure 3, is installed on the lower side of the sleeve structure 3. An external threaded vent plug 7 is embedded in the lower end of the push rod sleeve 4. A venting channel 5 is provided in the middle of the sleeve structure 3 and the push rod sleeve 4. The external threaded vent plug 7 is provided with several venting holes 11 that communicate with the venting channel 5.

[0018] In this technical solution, a sleeve structure 3 is set to connect with the cavity inside the mold cavity structure, and an ejector sleeve 4 is installed to connect with the external thread vent plug 7. The external thread vent plug 7 is set to vent, and at the same time, it is convenient to connect the external thread vent plug 7 and the ejector sleeve 4, so that the function can be replaced online. At the same time, by setting several vent holes 11, it is ensured that the vent holes 11 will not affect the production of the mold due to local blockage, and the service life of the venting structure is improved.

[0019] As a supplement to this technical solution, a pressure plate 1 for fixing the upper end of the sleeve structure 3 is installed on the upper surface of the mold body 2. By installing the pressure plate 1, it is convenient to fix the sleeve structure 3.

[0020] As a supplement to this technical solution, the upper end of the top rod sleeve 4 is provided with an outwardly protruding limiting ring, and a rubber ring 6 is embedded and sleeved on the lower side of the limiting ring of the top rod sleeve 4. The limiting ring is used to limit the position of the top rod sleeve 4, and the rubber ring 6 is used to ensure the sealing at this point.

[0021] As a supplement to this technical solution, the external threaded vent plug 7 includes an external threaded kit 9 ​​and an inner core 10. The outer ring of the external threaded kit 9 ​​is provided with an external thread. The external threaded kit 9 ​​and the push rod sleeve 4 are matched by the external thread. The inner core 10 is installed inside the external threaded kit 9. The inner core 10 is aligned with the venting channel 5. The venting through hole 11 is arranged at the inner core 10.

[0022] An independent inner core 10 is provided to facilitate the machining of the exhaust hole 11, while an external threaded fitting 9 is provided to facilitate docking with the top rod sleeve 4.

[0023] As a supplement to this technical solution, a rectangular slot 8 that runs through the front and rear sides is provided at the middle position of the lower end of the external threaded vent plug 7. By providing the rectangular slot 8, it is convenient to rotate the external threaded vent plug 7, so that the external threaded vent plug 7 can enter the top rod sleeve 4, simplifying the assembly between the two.

[0024] Example

[0025] During assembly, first insert the ejector sleeve 4 into the upper end face of the mold body 2. The limiting protrusion of the ejector sleeve 4 will limit the installation position of the ejector sleeve 4. Then, vertically insert the sleeve structure 3. The upper end of the sleeve structure 3 extends out of the upper end face of the mold body 2. Then, install the pressure plate 1 on the upper end face of the mold body 2. The pressure plate 1 will fix the sleeve structure 3. After completion, align the installation position of the external thread vent plug 7 and the lower end of the ejector sleeve 4. Use a tool, such as a screwdriver, to insert into the rectangular slot 8 and then rotate it so that the external thread vent plug 7 rotates into the ejector sleeve 4. When replacement is required, the ejector sleeve 4 and the sleeve structure 3 do not need to be removed. Just use a tool to reverse and take out the external thread vent plug 7.

Claims

1. A venting structure for casting molds, characterized in that: The device includes a mold body (2), a push rod sleeve (4), and a sleeve structure (3). The mold body (2) is equipped with a sleeve structure (3) whose upper end protrudes from the upper surface of the mold body (2). The sleeve structure (3) is equipped with a push rod sleeve (4) whose upper end abuts against the sleeve structure (3) on the lower side. An external threaded vent plug (7) is embedded in the lower end of the push rod sleeve (4). A venting channel (5) is provided in the middle of the sleeve structure (3) and the push rod sleeve (4). The external threaded vent plug (7) is provided with several venting holes (11) that communicate with the venting channel (5).

2. The venting structure for a casting mold according to claim 1, characterized in that: The upper surface of the mold body (2) is equipped with a pressure plate (1) for fixing the upper end of the sleeve structure (3).

3. The venting structure for a casting mold according to claim 1, characterized in that: The top rod sleeve (4) is provided with an outwardly protruding limiting ring at the upper end, and a rubber ring (6) is embedded and sleeved at the lower side of the limiting ring of the top rod sleeve (4).

4. The venting structure for a casting mold according to claim 1, characterized in that: The external threaded vent plug (7) includes an external threaded assembly (9) and an inner core (10). The outer ring of the external threaded assembly (9) is provided with an external thread. The external threaded assembly (9) and the push rod sleeve (4) are matched by the external thread. The inner core (10) is installed inside the external threaded assembly (9). The inner core (10) is aligned with the venting channel (5). The venting through hole (11) is arranged at the inner core (10).

5. The venting structure for a casting mold according to claim 1, characterized in that: The external threaded vent plug (7) has a rectangular slot (8) that runs through the front and rear sides at the middle position of its lower end.

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