Core pulling structure of mold

Abstract

The utility model discloses a core-pulling structure of a mold, which comprises a large sliding block, a small sliding block, an inclined sliding groove and a sliding block, a through channel is formed in the upper side of the large sliding block; the elastic sliding block is movably arranged at the through channel; a hanging opening is formed in the upper side of the elastic sliding block; the linkage block is fixed to the side, facing the fixed mold plate, of the movable mold plate, the linkage block is provided with a pull hook, and the pull hook is connected with the hanging opening in an inserted mode; and the driving cylinder is in driving connection with the large sliding block. The linkage block is arranged on the movable mold plate, the elastic sliding block is connected with the movable mold plate through the linkage block, and the movable mold plate is used for replacing one driving cylinder to drive the elastic sliding block to do core pulling motion. When the movable mold plate drives the linkage block to move upwards, the pulling hook of the linkage block drives the elastic sliding block to move upwards along the penetrating channel through the hanging opening, demolding at the position of a through hole of a product is completed, then the driving cylinder drives the large sliding block to move in the direction away from the fixed mold core along the inclined sliding groove, and core pulling work of the inclined face of the product is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and in particular to a core-pulling structure of a mold. Background Art

[0002] like Figure 1 The side of product A shown in the figure has a stepped sloped portion A1, which also has a through-hole A2 for connecting to another object. Through-hole A2 is larger at the top and smaller at the bottom. Product A is currently being injection molded, but the core pulling directions of sloped portion A1 and through-hole A2 differ: sloped portion A1 pulls downward, while through-hole A2 pulls upward. The existing mold requires two sets of drive cylinders and core-pulling sliders to complete the core pulling action, resulting in a complex structure and large space requirements. A new mold core-pulling structure is now designed to address this product's side structure. Summary of the Invention

[0003] The main purpose of the present invention is to provide a core-pulling structure for a mold, aiming to solve the problems of existing molds in the background technology.

[0004] In order to achieve the above object, the technical solutions of the present invention are:

[0005] The utility model discloses a core-pulling structure of a mold, wherein the mold comprises a movable mold and a fixed mold, wherein the movable mold comprises a movable platen and a movable mold core, and wherein the fixed mold comprises a fixed platen and a fixed mold core. An oblique sliding groove is provided on the fixed platen. The core-pulling structure of the mold comprises:

[0006] A large slider is movably disposed on the fixed mold plate and slidably engages with the oblique slide groove; a through channel is provided on the upper side of the large slider, the through channel being inclined upward from the bottom toward the direction away from the fixed mold core, the through channel including a groove and a through hole from top to bottom, the cross-sectional area of ​​the groove being larger than the cross-sectional area of ​​the through hole, and the groove is connected to the through hole;

[0007] An elastic slider is movably disposed at the through-channel, the elastic slider being adapted to the shape of the through-channel, and the outer surface of the elastic slider avoiding abutment against the inner side of the groove and the through-hole; the upper side of the elastic slider has a hanging opening; the end of the elastic slider is used for forming a through-hole of the product;

[0008] A linkage block is fixed on the side of the movable template facing the fixed template, the linkage block has a hook, the hook is plugged into the hanging opening, and the upper inclined surface of the hook is against the upper inclined surface of the hanging opening;

[0009] A driving cylinder is connected to the large sliding block in a driving manner.

[0010] Compared to the prior art, the core-pulling structure of a mold disclosed in the present invention has a linkage block provided on the movable mold plate, which connects the slide block to the movable mold plate through the linkage block. The movable mold plate replaces one of the drive cylinders to drive the slide block for core-pulling movement, simplifying the existing mold structure and reducing the space occupied by the core-pulling structure. When the movable mold plate drives the linkage block upward, the hook of the linkage block drives the slide block upward along the through-channel through the hanging opening, completing the demolding of the product through-hole. The drive cylinder then drives the large slide block to move along the oblique slide groove away from the fixed mold core, completing the core-pulling work of the product's oblique portion.

[0011] In a preferred embodiment, a spring is provided between the large slider and the elastic slider, and the deformation direction of the spring is the same as the moving direction of the elastic slider.

[0012] In a preferred embodiment, the core pulling structure of the mold also includes a limit block, which is installed on the large slider and is located on the upward movement path of the elastic slider; when the elastic slider is against the bottom surface of the limit block, the pull hook is separated from the hanging opening.

[0013] In a preferred embodiment, when the sliding block abuts against the bottom surface of the limiting block, the outer surface of the hook abuts against the wall surface of the through hole.

[0014] In a preferred embodiment, the driving cylinder is an oil cylinder.

[0015] In a preferred embodiment, the core-pulling structure of the mold also includes a sensing member and two contact sensing devices, the sensing member is connected to the large slider through an intermediate carrier, and the two contact sensing devices are installed on the fixed mold plate and arranged side by side along the movement direction of the large slider; when the sensing member contacts one of the contact sensing devices, the large slider is located at the position closest to the fixed mold core; when the sensing member contacts the other contact sensing device, the large slider is located at the position farthest from the fixed mold core.

[0016] In a preferred embodiment, a water transport circuit is provided in the large slider, and the water inlet and water outlet of the water transport circuit are located on the side of the large slider facing away from the fixed mold core; the core pulling structure of the mold also includes two water transport pipes, which are respectively connected to the water inlet and the water outlet, and are located on opposite sides of the driving cylinder.

[0017] For better understanding and implementation, the present invention is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 It is the side structure diagram of the product;

[0020] Figure 2 This is the structural diagram of the mold.

[0021] Figure 3 It is the structural diagram of the core pulling structure and fixed platen of the mold;

[0022] Figure 4 This is a partial exploded view of the core pulling structure of the mold;

[0023] Figure 5 It is a cross-sectional view of the mold;

[0024] Figure 6 It is a partial cross-sectional view of the core-pulling structure of the mold.

[0025] Description of reference numerals:

[0026] 11-moving template, 12-fixed mold core, 21-fixed template, 22-fixed mold core, 3-large slider, 31-through channel, 32-groove, 33-through hole, 4-elastic slider, 41-hanging opening, 5-linkage block, 51-hook, 6-drive cylinder, 7-spring, 8-limit block, 91-sensing part, 92-contact sensing device, 93-water transport pipe, 94-intermediate carrier. DETAILED DESCRIPTION

[0027] In order to better illustrate the present invention, the present invention is described in further detail below with reference to the accompanying drawings.

[0028] It should be clear that the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0029] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. The singular forms "a," "the," and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0030] See also Figures 1 to 6The utility model discloses a core-pulling structure of a mold, wherein the mold includes a movable mold and a fixed mold, wherein the movable mold includes a movable mold plate 11 and a movable mold core 12, and the fixed mold includes a fixed mold plate 21 and a fixed mold core 22. The fixed mold plate 21 is provided with an oblique slide groove. The core-pulling structure of the mold includes:

[0031] The large slider 3 is movably disposed on the fixed mold plate 21 and slidably engages with the oblique slide groove. The upper side of the large slider 3 has a through channel 31, which is inclined upward from the bottom toward the direction away from the fixed mold core 22. The through channel 31 includes a groove 32 and a through hole 33 from top to bottom. The cross-sectional area of ​​the groove 32 is larger than the cross-sectional area of ​​the through hole 33, and the groove 32 is connected to the through hole 33.

[0032] The slide block 4 is movably disposed in the through-channel 31. The slide block 4 is adapted to the shape of the through-channel 31. The outer surface of the slide block 4 avoids abutting against the inner surface of the groove 32 and the through-hole 33. The upper side of the slide block 4 has a hanging opening 41. The end of the slide block 4 is used for forming a through-hole of the product.

[0033] The linkage block 5 is fixed to the side of the movable plate 11 facing the fixed plate 21. The linkage block 5 has a hook 51. The hook 51 is plugged into the hanging opening 41. The upper inclined surface of the hook 51 abuts against the upper inclined surface of the hanging opening 41.

[0034] A driving cylinder 6 is drivingly connected to the large slide 3 .

[0035] Compared with the prior art, the core-pulling structure of a mold disclosed in the present invention has a linkage block 5 provided on the movable mold plate 11. The linkage block 5 connects the slide block 4 to the movable mold plate 11. The movable mold plate 11 is used to replace one of the drive cylinders to drive the slide block 4 to perform the core-pulling movement, thereby simplifying the existing mold structure and reducing the space occupied by the core-pulling structure. When the movable mold plate 11 drives the linkage block 5 upward, the hook 51 of the linkage block 5 drives the slide block 4 upward along the through-channel 31 through the hanging opening 41, completing the demolding of the product through-hole A2. Then, the drive cylinder 6 drives the large slide block 3 to move along the oblique slide groove in a direction away from the fixed mold core 22, completing the core-pulling work of the product inclined portion A1.

[0036] In this embodiment, see Figure 5 and Figure 6A spring 7 is provided between the large slider 3 and the elastic slider 4. The deformation direction of the spring 7 is the same as the movement direction of the elastic slider 4. In the mold closing state, the spring 7 is compressed; when the mold is opened, the movable plate 11 drives the hook 51 to move vertically upward, thereby driving the elastic slider 4 to move obliquely upward along the through channel 31. During this process, the spring 7 assists the elastic slider 4 to reduce the pressure burden of the elastic slider 4 on the hook 51; and after the core pulling is completed, the spring 7 can support the elastic slider 4 to prevent the elastic slider 4 from falling before the mold is closed, so that the elastic slider 4 remains separated from the hook 51. The height of the hook 51 makes it convenient for the hook 51 to enter the hanging opening 41 of the elastic slider 4 when the mold is closed; after the hook 51 enters the hanging opening 41, the hook 51 generates a downward pushing force on the bottom surface of the hanging opening 41, that is, the hook 51 pushes the elastic slider 4 downward, and in the process of pushing downward, the spring 7 is compressed and deformed, and the elastic slider 4 falls along the through channel 31 until the bottom surface of the elastic slider 4 is against the bottom surface of the groove 32, completing the mold closing action.

[0037] See also Figure 6 When the linkage block 5 moves upward, the upper inclined surface of the hook 51 is against the upper inclined surface of the hanging opening 41. In the process of the hook 51 driving the elastic slider 4 to move upward, the contact area between the upper inclined surface of the hook 51 and the upper inclined surface of the hanging opening 41 will become smaller and smaller, until the upper inclined surface of the hook 51 and the upper inclined surface of the hanging opening 41 no longer conflict with each other, and the elastic slider 4 is no longer pulled by the hook 51.

[0038] In this embodiment, see Figure 4 and Figure 6 The core-pulling structure of the mold also includes a limit block 8, which is installed on the large slider 3 and is located on the upward movement path of the elastic slider 4; when the elastic slider 4 is against the bottom surface of the limit block 8, the elastic slider 4 is blocked by the limit block 8, and the elastic slider 4 cannot continue to move upward along the through channel 31, and the hook 51 continues to move vertically upward under the drive of the movable template 11, so the hook 51 will be separated from the hanging opening 41.

[0039] Furthermore, when the elastic slider 4 abuts against the bottom surface of the limit block 8, the outer surface of the hook 51 abuts against the wall surface of the through hole 33. In this way, during the entire process of the hook 51 being driven by the elastic slider 4 to move obliquely upward, it can be ensured that the hook 51 remains limited by the through hole 33, so that the elastic slider 4 can also fall along the through hole 33 when the mold is returned to its original position.

[0040] In this embodiment, the driving cylinder 6 is an oil cylinder.

[0041] In this embodiment, see Figure 3 and Figure 4 The core-pulling structure of the mold also includes a sensing element 91 and two contact sensing devices 92. The sensing element 91 is connected to the large slider 3 through an intermediate carrier 94. The two contact sensing devices 92 are installed on the fixed mold plate 21 and are spaced side by side along the movement direction of the large slider 3. When the sensing element 91 contacts one of the contact sensing devices 92, the large slider 3 is located at the position closest to the fixed mold core 22, and the mold is in a closed state. When the sensing element 91 contacts the other contact sensing device 92, the large slider 3 is located at the position farthest from the fixed mold core 22, and the mold is in a fully open state. Two contact sensing devices 92 are used to determine whether the large slider 3 has moved into position accurately. When the large slider 3 does not move into position, the sensing element 91 cannot contact the contact sensing device 92, and the injection molding machine stops operating. This can avoid the occurrence of substandard product quality caused by the large slider 3 not moving into position during injection molding production.

[0042] In this embodiment, see Figure 3 and Figure 4 In order to cool the large slider 3, a water transport circuit is provided in the large slider 3, and the water inlet and water outlet of the water transport circuit are located on the side of the large slider 3 facing away from the fixed mold core 22; the core pulling structure of the mold also includes two water transport pipes 93, which are respectively connected to the water inlet and the water outlet, and are located on opposite sides of the driving cylinder 6.

[0043] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications of the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims of the present invention and equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A core-pulling structure of a mold, wherein the mold comprises a movable mold and a fixed mold, wherein the movable mold comprises a movable platen and a movable mold core, and wherein the fixed mold comprises a fixed platen and a fixed mold core, wherein: The fixed template is provided with an oblique slide groove, and the core-pulling structure of the mold includes: A large slider is movably disposed on the fixed mold plate and slidably engages with the oblique slide groove; a through channel is provided on the upper side of the large slider, the through channel being inclined upward from the bottom toward the direction away from the fixed mold core, the through channel including a groove and a through hole from top to bottom, the cross-sectional area of ​​the groove being larger than the cross-sectional area of ​​the through hole, and the groove is connected to the through hole; An elastic slider is movably arranged at the through-channel, the elastic slider is adapted to the shape of the through-channel, and the outer surface of the elastic slider avoids abutting against the inner side of the groove and the through-hole; the upper side of the elastic slider has a hanging opening; the end of the elastic slider is used for a through hole for forming a product; a linkage block is fixed to the side of the movable template facing the fixed template, the linkage block has a hook, the hook is plugged into the hanging opening, and the upper inclined surface of the hook abuts against the upper inclined surface of the hanging opening; A driving cylinder is connected to the large sliding block in a driving manner.

2. The core-pulling structure of the mold according to claim 1, characterized in that: A spring is provided between the large slider and the elastic slider, and the deformation direction of the spring is the same as the moving direction of the elastic slider.

3. The core-pulling structure of the mold according to claim 1 or 2, characterized in that: The core-pulling structure of the mold also includes a limit block, which is installed on the large slider and is located on the path of the elastic slider moving upward; when the elastic slider abuts against the bottom surface of the limit block, the pull hook is separated from the hanging opening.

4. The core-pulling structure of the mold according to claim 3, characterized in that: When the sliding block abuts against the bottom surface of the limiting block, the outer surface of the hook abuts against the wall surface of the through hole.

5. The core-pulling structure of the mold according to claim 1, characterized in that: The driving cylinder is an oil cylinder.

6. The core-pulling structure of the mold according to claim 1, characterized in that: The core-pulling structure of the mold also includes a sensing element and two contact sensing devices. The sensing element is connected to the large slider via an intermediate carrier, and the two contact sensing devices are mounted on the fixed template and spaced side by side along the moving direction of the large slider; When the sensing member contacts one of the contact sensing devices, the large slider is located closest to the fixed mold core; when the sensing member contacts the other contact sensing device, the large slider is located farthest from the fixed mold core.

7. The core-pulling structure of the mold according to claim 1, characterized in that: A water transport circuit is provided in the large slider, and a water inlet and a water outlet of the water transport circuit are located on a side of the large slider facing away from the fixed mold core; The core-pulling structure of the mold further includes two water transport pipes, which are respectively connected to the water inlet and the water outlet and are located on opposite sides of the driving cylinder.

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