Injection mold structure

Abstract

The invention provides an injection mold structure, relates to the technical field of injection molds, and solves the technical problem of collision penetration of a sliding block and a rear mold insert in the prior art. The device comprises a shutter, an auxiliary mold pre-opening mechanism and a core-pulling insert, the shutter is arranged between a plate A and a plate B, the auxiliary mold pre-opening mechanism is arranged between the plate B and a base plate, one end of the core-pulling insert is arranged on the base plate, and the other end of the core-pulling insert extends into the plate B. The auxiliary mold pre-opening mechanism and the opening and closing device are adopted for pre-opening the mold, so that the core-pulling insert is firstly far away from the sliding block, and then the opening and closing device is used for opening the mold, so that the problem that the sliding block and the rear mold insert collide and penetrate can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection mold structure. Background Art

[0002] The slider is a mold component that can slide perpendicular to the mold opening and closing direction or at a certain angle to the mold opening and closing direction during the mold opening action, and is used to assist in mold opening. However, different product structures involve different requirements for the slider when the mold is opened. Generally, the sliding of the slider is synchronized with the mold opening and closing, but sometimes the sliding needs to be in a sequence, such as sliding first and then opening the mold or opening the mold first and then sliding. However, in the prior art, there is a problem of the mold slider and the rear mold insert hitting each other. Due to product structural limitations, the hitting position cannot be inclined in the direction of the slider, and directly sliding the slider will directly rub against the rear mold insert. Summary of the invention

[0003] The purpose of the present invention is to provide an injection mold structure, which solves the technical problem of the slider and the rear mold insert being pierced in the prior art. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0004] To achieve the above object, the present invention provides the following technical solutions: The injection mold structure provided by the present invention comprises an opener and a closeer, an auxiliary pre-mold opening mechanism and a core-pulling insert, wherein the opener and a closeer are arranged between the A plate and the B plate, the auxiliary pre-mold opening mechanism is arranged between the B plate and the backing plate, one end of the core-pulling insert is arranged on the backing plate, and the other end extends into the B plate; The injection mold structure includes a mold closing state, a mold pre-opening state and a mold opening state: In the mold closing state, the shutter is in a locked state, the A plate, the B plate and the pad are tightly fitted, and the core-pulling insert is pressed against the slider; In the pre-mold opening state, the A plate and the B plate are tightly fitted, the auxiliary pre-mold opening mechanism drives the B plate to separate from the pad, the shutter is in a locked state, and the core-pulling insert is away from the slider; In the mold opening state, the shutter and the auxiliary pre-mold opening mechanism drive the A plate, the B plate and the pad to separate from each other, and the core-pulling insert is away from the slider.

[0005] Preferably, a limiting member is further included, wherein the limiting member is arranged on the B plate and the pad, and the limiting member is used to limit the separation distance between the B plate and the pad.

[0006] Preferably, the limiting member is a limiting bolt, and a limiting hole and a sliding hole are arranged on the B plate. The limiting hole and the sliding hole are connected and penetrate the B plate. The limiting bolt passes through the sliding hole and is connected to the pad. The B plate can slide along the limiting bolt, and the screw head of the limiting bolt is located in the limiting hole. When the mold is opened, the screw head is against the bottom wall of the limiting hole.

[0007] Preferably, the auxiliary pre-mold opening mechanism comprises a spring, one end of the spring abuts against the B plate, and the other end of the spring abuts against the pad.

[0008] Preferably, mounting grooves are provided on the end surfaces of the B plate and the backing plate that are opposite to each other, and the two mounting grooves are interlocked to form a mounting space, and the spring is arranged in the mounting space.

[0009] Preferably, it further comprises a fixing block, and the core-pulling insert is arranged on the pad through the fixing block.

[0010] Preferably, the number of the switches is multiple and they are symmetrically arranged.

[0011] Preferably, the number of the core-pulling inserts is two and they are symmetrically arranged.

[0012] This application adopts the above technical solution, which has at least the following beneficial effects: The injection mold structure includes an opener, an auxiliary pre-mold opening mechanism and a core-pulling insert, wherein the opener is arranged between the A plate and the B plate, the auxiliary pre-mold opening mechanism is arranged between the B plate and the pad, one end of the core-pulling insert is arranged on the pad, and the other end extends into the B plate. The pre-mold is pre-opened by the auxiliary pre-mold opening mechanism, so that the core-pulling insert is first away from the slider, so that the problem of the slider and the rear mold insert colliding can be avoided when the mold is opened by the opener later.

[0013] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 is a schematic diagram of a first cross-sectional structure of an injection mold structure provided by an embodiment of the present invention; Figure 2is a second cross-sectional structural schematic diagram of the injection mold structure provided by an embodiment of the present invention; Figure 3 is a third cross-sectional structural schematic diagram of the injection mold structure provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the injection mold structure provided by an embodiment of the present invention.

[0016] In the figure, 1 is the opener and closer; 2 is the auxiliary pre-opening mold mechanism; 3 is the core-pulling insert; 4 is the A plate; 5 is the B plate; 6 is the pad; 7 is the slider; 8 is the limiter; 9 is the installation space; 10 is the fixing block. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0018] The specific embodiment of the present invention provides an injection mold structure, combined with the attached Figure 1 - Attachment Figure 4 As shown, it has an A plate 4, a B plate 5 and a backing plate 6, and also includes an opener and closeer 1, an auxiliary pre-mold opening mechanism 2 and a core-pulling insert 3. The opener and closeer 1 is arranged between the A plate 4 and the B plate 5, and the opener and closeer 1 is used to automatically open and close the mold. The auxiliary pre-mold opening mechanism 2 is arranged between the B plate 5 and the backing plate 6, and the auxiliary pre-mold opening mechanism 2 is used to pre-open the mold. One end of the core-pulling insert 3 is arranged on the backing plate 6, and the other end extends into the B plate 5. The structure of the injection mold includes the mold closing state, the pre-opening state and the opening state: In the mold closing state, the shutter 1 is in a locked state, and the auxiliary pre-opening mold mechanism 2 is also in an inactive state, the A plate 4, the B plate 5 and the pad 6 are tightly fitted, and the core insert 3 is pressed against the slider 7; In the pre-mold opening state, the A plate 4 and the B plate 5 are tightly fitted, and the auxiliary pre-mold opening mechanism 2 drives the B plate 5 to separate from the pad 6 to achieve pre-mold opening, and the opener and closer 1 is in a locked state. At this time, by pre-separating the B plate 5 and the pad 6 from each other, the core-pulling insert 3 is indirectly kept away from the slider 7, so that the sliding of the slider 7 and the collision between the core-pulling insert 3 during the subsequent mold opening can be avoided. It should be noted that during the mold opening process, the injection molding machine opens the mold with the mold. During the opening process, the auxiliary pre-mold opening mechanism 2 will take effect first, so that the B plate 5 and the pad 6 will be separated first, so that the core-pulling insert 3 is kept away from the slider 7. At the same time, due to the auxiliary pre-mold opening mechanism 2, the A plate 4 and the B plate 5 will not be separated. When the mold continues to open, it will enter the following mold opening state.

[0019] In the mold opening state, the injection mold structure performs pre-opening first, and then performs mold opening. The auxiliary pre-opening mechanism 2 is used to drive the B plate 5 to separate from the pad 6 so that the core-pulling insert 3 is away from the slider 7, and then the opener 1 is used to drive the A plate 4 and the B plate 5 to separate from each other, and the slider 7 continues to slide away from the core-pulling insert 3.

[0020] The present application adopts the above-mentioned injection mold structure to perform pre-mold opening through an auxiliary pre-mold opening mechanism, so that the core-pulling insert is first away from the slider, so that when the mold is opened by the opener and closer, the problem of the slider and the rear mold insert colliding can be avoided.

[0021] In some embodiments, the number of the shutters 1 is multiple and symmetrically arranged. Specifically, the shutters 1 can be four and arranged near the four corners of the injection mold structure.

[0022] In the specific embodiments of the present application, Figure 2 As shown, it also includes a limiter 8, which is arranged on the B plate 5 and the pad 6. The limiter 8 is used to limit the separation distance between the B plate 5 and the pad 6, so as to ensure that the B plate 5 will not separate from the pad 6.

[0023] Specifically, the limiting member 8 in the present application is a limiting bolt, one end of which is a threaded end, the other end is a nut end, and the middle part is a smooth rod. A limiting hole and a sliding hole are provided on the B plate 5. The aperture of the limiting hole is larger than the aperture of the sliding hole. The limiting hole and the sliding hole are connected and penetrate the B plate 5. The limiting bolt passes through the sliding hole and is connected to the pad 6. The nut end is located in the limiting hole, and the smooth rod is located in the sliding hole. The B plate 5 can slide along the limiting bolt. When the mold is opened, the screw head abuts against the bottom wall of the limiting hole.

[0024] In some embodiments, the combination Figure 2 As shown, the auxiliary pre-mold opening mechanism 2 includes a spring, one end of the spring abuts against the B plate 5, and the other end abuts against the pad 6, and the B plate 5 and the pad 6 are separated by the thrust of the spring.

[0025] Specifically, mounting grooves are provided on the end faces opposite to the B plate 5 and the pad 6. The two mounting grooves are interlocked to form an mounting space 9. The spring is arranged in the mounting space 9. The two ends of the spring are respectively against the bottom of the two mounting grooves. In this way, the spring is in a compressed state when the mold is closed. When the mold is opened, the B plate 5 and the pad 6 are separated first under the action of the spring. At the same time, the A plate 4 and the B plate 5 will not be separated.

[0026] In some embodiments, the combination Figure 3 As shown, a fixing block 10 is also included, and the core-pulling insert 3 is arranged on the backing plate 6 through the fixing block 10 .

[0027] In some embodiments, the number of the core-pulling inserts 3 is two and they are symmetrically arranged.

[0028] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0029] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An injection mold structure, characterized in that: It includes an opener and a closeer, an auxiliary pre-mold opening mechanism and a core-pulling insert, wherein the opener and a closeer are arranged between the A plate and the B plate, the auxiliary pre-mold opening mechanism is arranged between the B plate and the backing plate, one end of the core-pulling insert is arranged on the backing plate, and the other end extends into the B plate; The injection mold structure includes a mold closing state, a mold pre-opening state and a mold opening state: In the mold closing state, the shutter is in a locked state, the A plate, the B plate and the pad are tightly fitted, and the core-pulling insert is pressed against the slider; In the pre-mold opening state, the A plate and the B plate are tightly fitted, the auxiliary pre-mold opening mechanism drives the B plate to separate from the pad, the shutter is in a locked state, and the core-pulling insert is away from the slider; In the mold opening state, the shutter and the auxiliary pre-mold opening mechanism drive the A plate, the B plate and the pad to separate from each other, and the core-pulling insert is away from the slider.

2. The injection mold structure according to claim 1, characterized in that: It also includes a limiting member, which is arranged on the B plate and the pad, and is used to limit the separation distance between the B plate and the pad.

3. The injection mold structure according to claim 2, characterized in that: The limiting part is a limiting bolt, and a limiting hole and a sliding hole are arranged on the B plate. The limiting hole and the sliding hole are communicated and penetrate the B plate. The limiting bolt passes through the sliding hole and is connected to the pad. The B plate can slide along the limiting bolt, and the screw head of the limiting bolt is located in the limiting hole. When the mold is opened, the screw head abuts against the bottom wall of the limiting hole.

4. The injection mold structure according to claim 1, characterized in that: The auxiliary pre-mold opening mechanism comprises a spring, one end of which abuts against the B plate, and the other end of which abuts against the pad.

5. The injection mold structure according to claim 4, characterized in that: The end surfaces of the B plate and the backing plate opposite to each other are both provided with mounting grooves, and the two mounting grooves are buckled with each other to form a mounting space, and the spring is arranged in the mounting space.

6. The injection mold structure according to claim 1, characterized in that: It also includes a fixing block, and the core-pulling insert is arranged on the pad through the fixing block.

7. The injection mold structure according to claim 1, characterized in that: The number of the switches is multiple and they are symmetrically arranged.

8. The injection mold structure according to claim 1, characterized in that: The number of the core-pulling inserts is two and they are symmetrically arranged.

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