CN220052692U

CN220052692U - Slider drag hook

Info

Publication number: CN220052692U
Application number: CN202321277872.3U
Authority: CN
Inventors: 刘媛; 单士友; 赵海龙; 张念钦; 刘晓玲; 耿子峰
Original assignee: Qingdao Hi Tech Moulds Co ltd
Current assignee: Qingdao Hi Tech Moulds Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-11-21
Anticipated expiration: 2033-05-25

Abstract

The utility model discloses a slider drag hook which is arranged in an injection mold and comprises a first drag hook and a second drag hook, wherein the first drag hook is connected and arranged at the lower part of the slider and is positioned on a front mold of the injection mold, and the second drag hook is fixedly arranged on a rear mold. The first draw hook and the second draw hook are steel members in a bent block shape with an L-shaped main view, the steel members comprise a vertical wall and a cross arm, the steel members are integrally formed, the cross arm is located at the end part of the vertical wall and protrudes outwards, mutually corresponding hook grooves are formed in the protruding cross arm, and after a front mold and a rear mold are assembled, the first draw hook and the second draw hook are buckled relatively. The utility model has simple structure, and can effectively avoid the reverse buckling damage caused by direct die opening during molding and demolding through the relative buckling of the first drag hook and the second drag hook, so that the sliding block core pulling action is completed and then the die is integrally opened during the reverse buckling and demolding of the product, the integrity of the molded product is ensured, the product quality is improved, and the cost is reduced.

Description

Slider drag hook

Technical Field

The utility model relates to the technical field of demolding and core pulling of injection molds, in particular to a sliding block drag hook.

Background

Injection molds are important process equipment for producing various plastic industrial products, and are also tools for endowing plastic products with complete structures and precise dimensions. Injection molding is a processing method used in mass production of parts with complex shapes, and specifically refers to that heated and melted plastic is injected into a mold cavity formed by buckling a movable mold and a fixed mold through an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification. However, due to the design requirement of the product structure, the edge of the outer wall of the product structure is often provided with a transverse back-off structure, and the injection mold adopts a transverse sliding block to mold and core-pulling and demolding when a product is molded, however, the core-pulling and demolding of the transverse sliding block are inconsistent with the mold-opening direction, and the mold is often opened without complete core pulling or reset without complete mold closing due to misoperation, so that the back-off structure of the product is damaged or the mold is damaged in the demolding process, and the problems of high failure rate, high rejection rate, high cost and the like exist.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a sliding block drag hook.

In order to solve the technical problems, the utility model adopts the following technical scheme: the sliding block drag hook is arranged in the injection mold and comprises a first drag hook and a second drag hook, wherein the first drag hook is connected and arranged at the lower part of the sliding block and is positioned on the front mold of the injection mold, and the second drag hook is fixedly arranged on the rear mold; the first draw hook and the second draw hook are steel members in a bent block shape with an L-shaped main view, the steel members comprise a vertical wall and a cross arm, the cross arm is located at the end part of the vertical wall and protrudes outwards, a hook groove corresponding to each other is formed in the protruding cross arm, and after a front mold and a rear mold are assembled, the first draw hook and the second draw hook are buckled relatively.

Further, a fixed support is arranged on the outer side wall of the front mold, a slide block oil cylinder is arranged below the fixed support, the tail end of a piston rod of the slide block oil cylinder is fixedly connected to a slide block, the slide block is slidably arranged in a cavity of the front mold, a core-pulling elastic block is arranged at the inner end of the slide block, and an injection molding space is formed between the slide block and the rear mold after mold closing; the bottom of the lower elastic block positioned at the lower part of the sliding block is fixedly provided with a first drag hook through a bolt, and the installation direction of the vertical wall of the first drag hook is relatively vertical to the expansion direction of the sliding block oil cylinder.

Further, a draw hook movable cavity which is sunken downwards is arranged on the top surface of the rear die corresponding to the first draw hook mounting position, the second draw hook is fixedly mounted on the left side of the draw hook movable cavity through a bolt, and the top end surface of the second draw hook is level with the upper edge of the draw hook movable cavity; the upper edge of the right side of the draw hook movable cavity is arranged in an inward inclined mode.

Further, the upper part of the tail end of the cross arm in the second drag hook is provided with a chamfer, and the chamfer is parallel to the installation direction of the first drag hook.

Further, the outer end part of the sliding block is fixedly provided with a transverse rod extending outwards, and two annular bulges are arranged on the transverse rod at intervals; correspondingly, a travel switch is arranged on the outer side wall of the front die, the travel switch is fixed through a travel support, two travel switches are arranged at intervals, one end of each travel switch is provided with a telescopic roller, and the rollers can contact and abut against the annular protrusions.

Compared with the prior art, the utility model has the following beneficial effects: the utility model has simple structure, and can effectively avoid the reverse buckling damage caused by direct die opening during molding and demolding through the relative buckling of the first drag hook and the second drag hook, so that the sliding block core pulling action is completed and then the die is integrally opened during the reverse buckling and demolding of the product, the integrity of the molded product is ensured, the product quality is improved, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of an injection molded product according to the present utility model;

FIG. 2 is a schematic diagram of the injection mold according to the present utility model;

FIG. 3 is a longitudinal cross-sectional view of the structure of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a schematic diagram of the front mold structure of the injection mold according to the present utility model;

FIG. 6 is a schematic diagram of a slider core pulling structure in the present utility model;

FIG. 7 is a schematic view of a rear mold structure of an injection mold according to the present utility model;

FIG. 8 is an enlarged view of portion C of FIG. 7;

in the figure: 1. the device comprises a front die, a rear die, a formed product, a fixed support, a sliding block oil cylinder, a sliding block, a core pulling elastic block, a first draw hook, a second draw hook, a draw hook moving cavity, a travel switch, a transverse rod and a roller.

Detailed Description

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and relational terms are merely determined for convenience in describing structural relationships of the components in the present utility model, and do not particularly denote that any one of the components of the present utility model must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present utility model.

Furthermore, the descriptions of the elements and operations described in the "first," "second," and the like are provided for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical language and are not to be construed as indicating or implying any particular importance or order of such elements or operations. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:

as shown in fig. 2 to 8, a slider drag hook is applied in an injection mold, and is mainly aimed at demolding of a back-off structure shown in a portion a on a molded product 3 in fig. 1, and comprises a first drag hook 8 and a second drag hook 9, wherein the first drag hook 8 is connected and installed at the lower part of the slider 6, is positioned at a front mold 1 of the injection mold, and the second drag hook 9 is fixedly installed on a rear mold 2 of the injection mold. The first draw hook 8 and the second draw hook 9 are steel members in a bent block shape with an L-shaped main view, the steel members comprise a vertical wall and a cross arm, the cross arm is positioned at the end part of the vertical wall and protrudes outwards, and hook grooves corresponding to each other are formed in the protruding cross arm, so that after the front mold 1 and the rear mold 2 are assembled, the first draw hook 8 and the second draw hook 9 are buckled relatively.

Referring to fig. 5 and 6, a fixing bracket 4 is further installed on the outer side wall of the front mold 1 through a bolt connection, a slide block cylinder 5 is fixedly installed below the fixing bracket 4 through a bolt, a piston rod of the slide block cylinder 5 extends into the injection mold, and the tail end of the piston rod is fixedly connected to the right end of the slide block 6; the sliding block 6 is slidably mounted in the cavity of the front mold 1, a core-pulling elastic block 7 is arranged at the left end of the sliding block 6, a lower elastic block is arranged at the bottom of the left end of the sliding block 6 and under the core-pulling elastic block 7 for the reverse buckling molding of the A part in the molded product 3, and after the injection mold is closed, an injection molding space is formed among the core-pulling elastic block 7, the lower elastic block and the rear mold 2 for the injection molding of the molded product 3. The bottom of the lower elastic block is fixedly provided with a first draw hook 8 through a countersunk bolt, and the installation direction of the vertical wall of the first draw hook 8 is relatively perpendicular to the expansion direction of the sliding block oil cylinder 5.

Referring to fig. 7 and 8, a draw hook movable cavity 10 which is concave downward is arranged on the rear mold 2 at the top surface corresponding to the installation position of the first draw hook 8, the second draw hook 9 is fixedly installed at the left side of the draw hook movable cavity 10 through a countersunk bolt, and the top end surface of the second draw hook 9 is level with the upper edge of the draw hook movable cavity 10; the right upper edge of the draw hook movable cavity 10 is arranged in an inward inclined way. The upper part of the tail end of the cross arm in the second drag hook 9 is provided with a chamfer, and the chamfer is parallel to the installation direction of the first drag hook 8.

According to a further optimized technical scheme, the right outer end part of the sliding block 6 is fixedly provided with an outwards extending transverse rod 12, and two annular protrusions are arranged on the transverse rod 12 at intervals along with the sliding of the sliding block 6. Correspondingly, a stroke bracket is fixedly arranged on the outer side wall of the front die 1 through bolts and is positioned beside the transverse rod 12 and parallel to the transverse rod; two travel switches 11 are fixed at intervals below the travel support, a telescopic roller 13 is mounted at one end, close to the transverse rod 12, of each travel switch 11, and the roller 13 can contact and abut against the annular bulge.

The specific use principle is as follows: when the product is injection molded, the back mold 2 and the front mold 1 complete the mold closing action, and at the moment, the first draw hook 8 is buckled relatively with the second draw hook 9 in the draw hook movable cavity 10 on the back mold 2; after high-pressure injection molding and cooling, molding and demolding, in order to ensure the integrity of the back-off structure, the sliding block 6 is driven to slide outwards through the sliding block cylinder 5, the sliding block 6 drives the corresponding core-pulling elastic block 7 and the lower elastic block to perform core-pulling movement under the action of the inclined guide pillar, the first draw hook 8 fixed on the lower elastic block performs synchronous movement and gradually breaks away from the second draw hook 9, and slides out along the upper right edge of the draw hook movable cavity 10, so that the back-off structure is ensured to be completely demolded, and the product quality is improved.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a slider drag hook installs in injection mold, its characterized in that: the device comprises a first draw hook and a second draw hook, wherein the first draw hook is connected and installed at the lower part of a sliding block and is positioned on a front die of an injection mold, and the second draw hook is fixedly installed on a rear die; the first draw hook and the second draw hook are steel members in a bent block shape with an L-shaped main view, the steel members comprise a vertical wall and a cross arm, the cross arm is located at the end part of the vertical wall and protrudes outwards, a hook groove corresponding to each other is formed in the protruding cross arm, and after a front mold and a rear mold are assembled, the first draw hook and the second draw hook are buckled relatively.

2. A slider drag hook as claimed in claim 1, wherein: a fixed support is arranged on the outer side wall of the front mold, a slide block oil cylinder is arranged below the fixed support, the tail end of a piston rod of the slide block oil cylinder is fixedly connected to a slide block, the slide block is slidably arranged in a cavity of the front mold, a core-pulling elastic block is arranged at the inner end of the slide block, and an injection molding space is formed between the slide block and the rear mold after mold closing; the bottom of the lower elastic block positioned at the lower part of the sliding block is fixedly provided with a first drag hook through a bolt, and the installation direction of the vertical wall of the first drag hook is relatively vertical to the expansion direction of the sliding block oil cylinder.

3. A slider drag hook as claimed in claim 2, wherein: the upper surface of the rear die, which corresponds to the first drag hook installation position, is provided with a drag hook movable cavity which is sunken downwards, the second drag hook is fixedly installed on the left side of the drag hook movable cavity through a bolt, and the top end surface of the second drag hook is level with the upper edge of the drag hook movable cavity; the upper edge of the right side of the draw hook movable cavity is arranged in an inward inclined mode.

4. A slider drag hook as claimed in claim 1, wherein: the upper part of the tail end of the cross arm in the second drag hook is provided with a chamfer angle, and the chamfer angle at the position is parallel to the installation direction of the first drag hook.

5. A slider drag hook as claimed in claim 1, wherein: the outer end part of the sliding block is fixedly provided with a transverse rod extending outwards, and two annular bulges are arranged on the transverse rod at intervals; correspondingly, a travel switch is arranged on the outer side wall of the front die, the travel switch is fixed through a travel support, two travel switches are arranged at intervals, one end of each travel switch is provided with a telescopic roller, and the rollers can contact and abut against the annular protrusions.