Gas cap demolding structure of mold

Abstract

The utility model provides a gas cap demoulding structure of a mould, which comprises a lower module, a groove is arranged on the upper side surface of the lower module, an inner core block is connected in the groove in a matching way, an air channel communicated with the groove is arranged on the lower module, and the gas cap demoulding structure further comprises an ejector rod capable of moving up and down, and the ejector rod can drive the inner core block to move up and down. The ejection rod is added to push demolding on the basis of gas cap demolding, and the ejection rod and the ejection rod are combined, so that the condition that the gas cap is stuck can be avoided, and the advantage of gas cap demolding is also achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an air cap demoulding structure of a mold. Background Art

[0002] The existing gas ejection mechanism of the injection mold generally includes an inner core and an outer core.

[0003] For example, a gas cap mechanism for resisting plane downward movement of an injection mold is disclosed in the patent authorization announcement number CN 209224502 ​​U, and reference is made to Figure 1 and Figure 2 shown.

[0004] The inner core is in a locked fit with the outer core under the action of the spring, and the air pressure is used to separate the inner core and the outer core. In the above-mentioned air cap structure, in the mold closing state, the inner core and the outer core may be stuck due to deformation, thus affecting demolding. Utility Model Content

[0005] In view of the problems pointed out in the background technology, the utility model proposes an air-cap demoulding structure of a mold to solve the above technical problems.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A gas ejection demoulding structure of a mold comprises a lower module, wherein the upper side surface of the lower module is provided with a groove, an inner core block is adapted to be connected in the groove, an air passage connected to the groove is provided on the lower module, and the lower module also comprises a push rod which can move up and down, and the push rod can drive the inner core block to move up and down.

[0008] The utility model is further configured such that a connecting hole is provided at the bottom of the groove, the connecting hole passes through the lower side of the lower module, the push rod is connected in the connecting hole, the upper end of the push rod is fixedly connected to the inner core block, and the lower end of the push rod extends to the lower side of the lower module.

[0009] The utility model is further configured to further include a push block, and the lower end of the push rod is fixedly connected to the push block.

[0010] The utility model is further configured that a ventilation groove is provided on the inner side wall of the upper end of the connecting hole, the ventilation groove is arranged along the up and down direction, the upper end of the ventilation groove is connected to the groove, and the lower end of the ventilation groove is connected to the airway.

[0011] The utility model is further configured as follows: the lower module is provided with a through hole penetrating the upper and lower sides thereof, a push rod is connected in the through hole, and the lower end of the push rod is fixedly connected to the push block; when the inner core block is adapted to be connected with the groove, the upper end of the push rod is flush with the upper side surface of the lower module.

[0012] The utility model is further configured that a base is provided at the lower side of the lower module, and a receiving groove for receiving the push block is provided in the middle of the base.

[0013] The utility model is further configured that the push block comprises an upper push block and a lower push block, and the lower ends of the push rod and the push rod are clamped and fixed between the upper push block and the lower push block.

[0014] The utility model is further configured that the push rod is threadedly connected with a limiting nut, and the limiting nut is located between the push block and the lower module.

[0015] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0016] The gas-top demoulding structure of the mold provided by the utility model has a demoulding structure in which a push rod is added to the demoulding structure based on the gas-top demoulding structure. The combination of the two can avoid the situation that the gas-top is stuck, and also has the advantages of gas-top demoulding structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 The structure of the prior art is shown in FIG. Figure 1 .

[0019] Figure 2 The structure of the prior art is shown in FIG. Figure 2 .

[0020] Figure 3 The structure of the utility model in the demoulding state is schematically shown. Figure 1 .

[0021] Figure 4 The structure of the utility model in the demoulding state is schematically shown. Figure 2 .

[0022] Figure 5 It is a structural schematic diagram of the utility model in the mold closing state.

[0023] Figure 6 For this utility model Figure 3 Schematic diagram of the structure of the enlarged view of part A in .

[0024] Explanation of the numbers in the accompanying drawings: lower module 1, groove 2, inner core block 3, airway 4, push rod 5, connecting hole 6, push block 7, ventilation groove 8, through hole 9, push rod 10, base 11, receiving groove 12, limit nut 13. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] For reference Figure 1-6 The utility model is described as follows:

[0027] Embodiment 1: A gas-top demoulding structure of a mold comprises a lower module 1, which cooperates with an upper module (not shown in the figure) to form an injection cavity, a groove 2 is provided on the upper side surface of the lower module 1, and the groove 2 is arranged at the center of the lower module 1, and the groove 2 is a conical structure with a larger upper part and a smaller lower part, and an inner core block 3 is provided in the groove 2 to be adapted and connected, and when the inner core block 3 is connected to the groove 2, the inner core block 3 is flush with the upper side surface of the lower module 1, and an air channel 4 connected to the groove 2 is provided on the lower module 1, one end of the air channel 4 is connected to the groove 2, and the other end of the air channel 4 passes through the outer wall of the lower module 1, and an external blowing device is connected to the air channel 4, which can blow up the inner core block 3 by air pressure, and lift up the molded product by air pressure. The above is a common gas-top demoulding technical solution.

[0028] A connecting hole 6 is provided at the bottom of the groove 2, and the connecting hole 6 passes through the lower side of the lower module 1. A push rod 5 is connected to the connecting hole 6, and the upper end of the push rod 5 is fixedly connected to the inner core block 3 (integrated), and the lower end of the push rod 5 extends to the lower side of the lower module 1. The push rod 5 can move up and down, and the push rod 5 can drive the inner core block 3 to move up and down, so as to perform the demoulding operation.

[0029] A ventilation groove 8 is provided on the inner side wall of the upper end of the connecting hole 6. The ventilation groove 8 is arranged in the up and down direction. There are multiple ventilation grooves 8. The multiple ventilation grooves 8 are arranged at circumferential intervals of the connecting hole 6. The lower ends of the multiple ventilation grooves 8 are connected by an annular connecting groove. The connecting groove is arranged on the side wall of the connecting hole 6. The airway 4 is connected to the connecting groove. The upper end of the ventilation groove 8 is connected to the groove 2. In this way, the air in the airway 4 enters the connecting groove, then enters the multiple ventilation grooves 8, and then enters the groove 2.

[0030] The push block 7 is also included. The lower end of the push rod 5 is fixedly connected to the push block 7. The push block 7 can move up and down. The push block 7 drives the push rod 5 to move up and down. A base 11 is provided at the lower side of the lower module 1. A receiving groove 12 for receiving the push block 7 is provided in the middle of the base 11. The push block 7 can move up and down in the receiving groove 12. The push block 7 is driven by a driving device.

[0031] The lower module 1 is provided with a through hole 9 penetrating the upper and lower sides thereof, and a cylindrical push rod 10 is connected in the through hole 9, and the lower end of the push rod 10 is fixedly connected to the push block 7; when the inner core block 3 is adapted to be connected with the groove 2, the upper end of the push rod 10 is arranged flush with the upper side surface of the lower module 1. With the above technical solution, when the push block 7 drives the ejector 5 upward, it also drives the push rod 10 to move upward, so that the push rod 10 can also lift the molded product to play a role in demoulding. There are multiple push rods 10, and multiple push rods 10 are arranged around the ejector 5.

[0032] The push block 7 includes an upper push block 7 and a lower push block 7, the lower ends of the push rod 10 and the push rod 5 are clamped and fixed between the upper push block 7 and the lower push block 7, the lower ends of the push rod 10 and the push rod 5 are provided with a connecting head, the diameter of the connecting head is larger than the diameter of the push rod 10 and the push rod 5, the upper push block 7 is provided with a hole for the push rod 10 and the push rod 5 to pass through, the upper push block 7 and the lower push block 7 are fixedly connected by screws, and the connecting head is clamped and fixed between the upper push block 7 and the lower push block 7.

[0033] The push rod 10 is threadedly connected to a limit nut 13, and the limit nut 13 is located between the push block 7 and the lower module 1. By adopting this technical solution, the upward movement distance of the push rod 10 and the push rod 5 can be limited by the limit nut 13. In this way, by adjusting the position of the limit nut 13 on the push rod 10, the upward movement distance of the push rod 10 and the push rod 5 for demolding can be adjusted.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-top demoulding structure of a mold, comprising a lower module (1), a groove (2) is provided on the upper side of the lower module (1), an inner core block (3) is provided in the groove (2) for fitting connection, and an air passage (4) is provided on the lower module (1) and communicated with the groove (2), characterized in that: It also comprises a push rod (5) which can move up and down, and the push rod (5) can drive the inner core block (3) to move up and down.

2. The air-cap demoulding structure of a mold according to claim 1, characterized in that: A connecting hole (6) is provided at the bottom of the groove (2), and the connecting hole (6) passes through the lower side of the lower module (1). The push rod (5) is connected in the connecting hole (6), and the upper end of the push rod (5) is fixedly connected to the inner core block (3), and the lower end of the push rod (5) extends to the lower side of the lower module (1).

3. The air-cap demoulding structure of a mold according to claim 2, characterized in that: It also comprises a push block (7), and the lower end of the push rod (5) is fixedly connected to the push block (7).

4. The air-cap demoulding structure of a mold according to claim 2, characterized in that: A ventilation groove (8) is provided on the inner side wall of the upper end of the connection hole (6), and the ventilation groove (8) is arranged in the up-down direction, the upper end of the ventilation groove (8) is connected to the groove (2), and the lower end of the ventilation groove (8) is connected to the airway (4).

5. The air-cap demoulding structure of a mold according to claim 3, characterized in that: The lower module (1) is provided with a through hole (9) penetrating the upper and lower sides thereof, and a push rod (10) is connected inside the through hole (9), and the lower end of the push rod (10) is fixedly connected to the push block (7); when the inner core block (3) is adapted to be connected with the groove (2), the upper end of the push rod (10) is arranged flush with the upper side surface of the lower module (1).

6. The air-cap demoulding structure of a mold according to claim 5, characterized in that: A base (11) is provided on the lower side of the lower module (1), and a receiving groove (12) for receiving the push block (7) is provided in the middle of the base (11).

7. The air-cap demoulding structure of a mold according to claim 5, characterized in that: The push block (7) comprises an upper push block (7) and a lower push block (7), and the lower ends of the push rod (10) and the push rod (5) are clamped and fixed between the upper push block (7) and the lower push block (7).

8. The air-cap demoulding structure of a mold according to claim 5, characterized in that: The push rod (10) is threadedly connected with a limit nut (13), and the limit nut (13) is located between the push block (7) and the lower module (1).

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