Demoulding device for deep-cavity mould

Abstract

The utility model discloses a demolding device for a deep-cavity mold. The demolding device comprises a base plate, a driving device, a sliding block seat and a sliding block insert, the sliding block seat is connected with the sliding block insert through a guide rod; opening and closing assemblies are arranged on the two sides of the sliding block seat and the sliding block insert; the opening and closing assembly comprises a pull rod, a telescopic block and a limiting block; the slider seat is penetrated by the inclined guide post, and the driving device is started after the slider seat and the inclined guide post fall off; the driving end of the driving device is fixedly connected with the sliding block base, the near end of the pull rod is fixedly connected with the side wall of the sliding block base, and the far end of the pull rod moves relative to the sliding block insert. The demolding device has the beneficial effects that the sliding block seat and the pull rod are driven by the driving device to move relative to the sliding block insert, and an acting force is not applied to the deep-cavity mold in the demolding process, so that the surface of the deep-cavity mold is prevented from being scratched and deformed, and the demolding quality and completeness of the deep-cavity mold in the demolding process are guaranteed; the inclined guide pillar opens the parting surface between the sliding block seat and the sliding block insert, so that the driving force required by the driving device, the overall volume of the driving device and the cost of the driving device are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, in particular to a demoulding device for deep cavity molds. Background Art

[0002] The injection molding process is also called injection molding process. Its advantages are fast production speed, high efficiency, automatic operation, and the molding process of a large number of products. At the same time, with the rapid development of mold technology, more and more plastic products need to be molded in one go, so it is becoming more and more common to use injection molding technology to process products.

[0003] When using injection molds to process cylindrical deep cavity products, and demolding after processing and molding, the ejector structure used in patents CN216329476U, CN218519099U and CN112549466A is generally used. That is, the prior art including the above patents is to match the end of the ejector pin with the end of the deep cavity mold (hereinafter referred to as the product) after the mold is opened, and the driving structure directly or indirectly drives the ejector pin to move toward the product direction, and finally the ejector pin applies a force to the end of the product to realize the demolding of the product. Since this type of product has a large depth and a thin wall thickness, if the ejector pin is used for demolding, the end of the product will be deformed to a certain extent, and even the surface of the product will be damaged. In addition, for the needs of aesthetics or product design, the ends of some products are not flat but arc-shaped with a certain R angle. The ejector pin may be displaced from the product during the ejection process, thereby affecting the stability of the demolding process and the yield rate of demolding.

[0004] In order to solve the above problems, designing a demoulding device for deep cavity molds is an important technical problem that technicians in this field need to solve. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to provide a demoulding device for a deep cavity mold.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A demoulding device for a deep cavity mold, comprising a base plate, a driving device, a slider seat and a slider insert arranged on the base plate; the slider seat and the slider insert are connected by a guide rod; an opening and closing assembly is arranged on both sides of the slider seat and the slider insert; the opening and closing assembly at least comprises a pull rod, a telescopic block and a limit block; the slider seat is penetrated by an inclined guide column, and the driving device is started after the two fall off; the driving end of the driving device is fixedly connected to the slider seat, and the proximal end of the pull rod is fixedly connected to the side wall of the slider seat Fixed connection, its distal end moves relative to the slider insert; in the mold closing state, the inclined guide column passes through the slider seat, and the slider seat abuts against the slider insert; the distal end of the pull rod does not contact the side wall of the slider insert, and the limit block is located on the side of the telescopic block; in the mold opening state, the inclined guide column is located above the slider seat, and the slider seat is separated from the slider insert; the distal end of the pull rod abuts against the side wall of the slider insert and compresses the telescopic block; the telescopic block partially abuts against the limit block.

[0008] Preferably, the width of the distal end of the pull rod is greater than the width of its main body, and there is an inclined transition between the two; the distal end of the pull rod is provided with a protrusion protruding from its inner wall, and in the mold opening state, the protrusion abuts against the side wall of the slider insert.

[0009] Preferably, two ends of the slider insert are formed with placement grooves for placing the telescopic block; a spring abutting against the telescopic block is arranged in the placement groove.

[0010] Preferably, a notch abutting against the limit block is formed on a side of the telescopic block away from the distal end of the pull rod.

[0011] Preferably, a hollow limiting protrusion is provided on a side of the slider insert away from the slider seat, and a groove abutting against the end of the deep cavity mold is formed at the distal end of the limiting protrusion.

[0012] Preferably, a connection port for connecting to the driving end of the driving device is formed on the slider seat; a slider core is provided on the side of the slider seat close to the slider insert, the slider core passes through the limiting protrusion, and the shape of the slider core is consistent with the shape of the deep cavity mold, and is inserted into the inner side of the deep cavity mold.

[0013] Preferably, the slider insert is fixedly connected to the guide rod; the slider seat protrudes from both sides of the base plate and contacts the guide rod, and the driving device drives the slider seat to move along the setting direction of the guide rod.

[0014] Preferably, there are proximity sensors on both sides of the driving device, and the proximity sensors are used to detect the position of the slider seat.

[0015] The advantages of the technical solution of the utility model are mainly reflected in:

[0016] The demoulding operation of the deep cavity mold is completed by driving the slider seat and the pull rod to move relative to the slider insert through the driving device. Compared with the method of ejecting the deep cavity mold in the prior art, the present application does not apply force to the deep cavity mold during the demoulding process, ensuring that there will be no scratches and deformation on its surface, thereby ensuring the stability, demoulding quality and integrity of the deep cavity mold during the demoulding process;

[0017] A part of the parting surface between the slider seat and the slider insert is opened by the inclined guide column before the driving device is started, so as to reduce the driving force required by the driving device, thereby reducing the overall volume and cost of the driving device and the device;

[0018] The slider seat is set on the substrate, and the two sides of the slider seat 2 are slidably set on the guide rods. The slider seat is then driven by the driving device to move, and its position is limited in the three directions of X, Y, and Z axes to ensure the stability of its movement during the mold opening process and the coaxiality of the deep cavity mold during the mold opening process, thereby improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : A three-dimensional diagram of the mold closing state of a preferred embodiment of the utility model;

[0020] Figure 2 : Front view of the mold closing state of the preferred embodiment of the utility model;

[0021] Figure 3 : Side view of the mold clamping state of the preferred embodiment of the utility model;

[0022] Figure 4 : A three-dimensional diagram of the mold opening state of the preferred embodiment of the utility model;

[0023] Figure 5 : Front view of the mold opening state of the preferred embodiment of the utility model;

[0024] Figure 6 : Side view of the mold opening state of the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0025] The purpose, advantages and features of the present invention will be illustrated and explained through the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0026] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0027] like Figure 1 to Figure 2 , Figures 4 to 5 As shown, the utility model discloses a demoulding device for a deep cavity mold, comprising a base plate 6, a driving device 1, a slider seat 2 and a slider insert 3 arranged on the base plate 6. The base plate 6 is at least partially located at the bottom of the slider insert 3. The driving device 1 is preferably a cylinder in this application, and of course, in other embodiments, it can also be replaced by other components with linear driving functions disclosed in the prior art, which will not be described again.

[0028] Further, such as Figure 2 or Figure 5 As shown, the slider seat 2 and the slider insert 3 are connected via a guide rod 203; the slider insert 3 is fixedly connected to the guide rod 203; the slider seat 2 protrudes from both sides of the base plate 6 and contacts the guide rod 203, and the driving device 1 drives the slider seat 2 to move along the setting direction of the guide rod 203. The slider seat 2 is penetrated by an inclined guide column 21, and the driving device 1 is started after the two fall off. The inclined guide column 21 is fixedly connected to the fixed mold, and the fixed mold is a known existing structure and is not described here. The inclined guide column 21 is used to open a part of the parting surface between the slider seat 2 and the slider insert 3 before the driving device 1 is started, so as to reduce the driving force required by the driving device 1, thereby reducing the overall volume and cost of the driving device 1 and the device.

[0029] The bottom of the slider seat 2 is set on the substrate 6, and the two sides of the slider seat 2 are slidably set on the guide rod 203, and then the driving device 1 drives the slider seat 2 to move, and the position of the slider seat 2 is limited in the three directions of X, Y, and Z axes to ensure the stability of its movement during the mold opening process and the coaxiality of the deep cavity mold during the mold opening process, thereby improving the yield rate.

[0030] like Figure 2 or Figure 4As shown, an opening and closing assembly 4 is provided on both sides of the slider seat 2 and the slider insert 3, and the opening and closing assembly 4 at least includes a pull rod 41, a telescopic block 42 and a limit block 43. The pull rod 41 is fixedly arranged on the base block, and since the base block is a known existing structure, it is not described here. The driving end of the driving device 1 is fixedly connected to the slider seat 2, the proximal end of the pull rod 41 is fixedly connected to the side wall of the slider seat 2, and the distal end thereof moves relative to the slider insert 3.

[0031] Specific, combined Figure 2 and Figure 5 As shown, the width of the distal end of the pull rod 41 is greater than the width of its main body, and there is an inclined transition between the two; the distal end of the pull rod 41 is provided with a protrusion 411 protruding from its inner side wall, and in the mold opening state, the protrusion 411 abuts against the side wall of the slider insert 3. After the parting surface is opened by the inclined guide column 21, during the mold opening process driven by the driving device 1, the pull rod 41 moves synchronously with the slider seat 2 until the distal end inclined surface of the pull rod 41 gradually contacts the sliding insert 3, and the pull rod 41 applies a certain force to the telescopic block 42 toward the middle section of the sliding insert 3 until the protrusion 411 abuts against the outer side surface of the sliding insert 3, and at the same time, the telescopic block 42 contracts and abuts against the limit block 43.

[0032] Furthermore, both ends of the slider insert 3 are formed with placement grooves for placing the telescopic block 42; a spring is arranged in the placement groove to abut against the telescopic block 42. During the mold opening process, the telescopic block 42 gradually shrinks under the force from the pull rod 41. A notch abutting against the limit block 43 is formed on the side of the telescopic block 42 away from the far end of the pull rod 41; when the mold opening is completed, the limit block 43 abuts against the telescopic block 42; during the mold closing process, the driving device 1 drives the slider seat 2 and the pull rod 41 to move toward the outside of the sliding insert 3; during this process, the force between the pull rod 41 and the telescopic block 43 is gradually reduced, and the pull rod 41 is gradually separated from the limit block 43, and finally the telescopic block 43 will be driven to reset under the action of the spring, and the sliding seat 2 and the sliding insert 3 are reset to a fitting state.

[0033] like Figures 1 to 3 The figure shows the mold closing state, the inclined guide column 21 passes through the slider seat 2, and the slider seat 2 abuts against the slider insert 3; the distal end of the pull rod 41 does not contact the outer wall of the slider insert 3, and the limit block 43 is located on the side of the telescopic block 42. Figures 4 to 6The figure shows the mold opening state, the inclined guide column 21 is located above the slider seat 2, and the slider seat 2 is separated from the slider insert 3; the distal end of the pull rod 41 abuts against the side wall of the slider insert 3 and compresses the telescopic block 42; the telescopic block 42 partially abuts against the limit block 43.

[0034] The demoulding process of the deep cavity mold is divided into: the pre-demolding stage, the primary demoulding stage and the secondary demoulding stage. Among them, the pre-demolding stage is the stage of the inclined guide column moving upward. In this process, the parting surface between the sliding seat 2 and the slider insert 3 will be opened, and the parting surface is preferably opened by about 250±50mm, and at the same time, the deep cavity mold will produce a demoulding of about 500±50mm. The primary demoulding stage is that the driving device 1 drives the pull rod 41 to move to the position where the telescopic block 42 abuts. In this process, the deep cavity mold produces a demoulding of about 135±5mm. The secondary demoulding stage is that the telescopic block 42 moves to the position where the limit block 43 abuts. In this process, the demoulding of the R angle of the deep cavity mold is completed, and the deep cavity mold is preferably displaced by about 2mm to 3mm.

[0035] like Figure 2 , Figure 4 and Figure 5 As shown, a hollow limiting protrusion 31 is provided on a side of the slider insert 3 away from the slider seat 2 , and a groove is formed at the far end of the limiting protrusion 31 to abut against the end of the deep cavity mold.

[0036] The slider seat 2 is formed with a connection port for connecting to the driving end of the driving device 1; that is, the driving end of the driving device 1 is arranged in the connection port, so that after starting the driving device 1, the slider seat 2 can be driven to move synchronously. Figures 4 to 5 The slider core 22 shown in the figure passes through the limiting protrusion 31, and the shape of the slider core 22 is consistent with the shape of the deep cavity mold, and is inserted into the inner side of the deep cavity mold; that is, the outer diameter of the slider core 22 is equivalent to the inner diameter of the deep cavity mold.

[0037] like Figure 1 and Figure 4 As shown, a glue injection head 7 is provided on the outside of the slider core 22. Preferably, there are two glue injection heads 7, which are symmetrically arranged on both sides of the slider core 22 and spaced apart on the slider core 22. Further, the glue injection head 7 is fixedly arranged on the glue injection device. Since the glue injection device is a known prior art, it is not described here. By injecting glue to the outer surface of the slider core through two glue injection heads symmetrically and equidistantly arranged on the outside of the slider core, the injection time is effectively shortened, while ensuring the coaxiality of the deep cavity mold for injection molding, and also ensuring the balance of the deep cavity mold and the device as a whole.

[0038] like Figure 1 to Figure 2 , Figures 4 to 5 As shown, there are proximity sensors 5 on both sides of the driving device 1, which detect the position of the slider seat 2, determine whether the demoulding operation of the deep cavity mold is completed, and issue a prompt after the demoulding is completed. There can be one or more proximity sensors 5, and the number is not limited here; when there are multiple proximity sensors 5, proximity sensors set at different positions can be used to detect the same or different parts, and multiple proximity sensors 5 are triggered at the same time to ensure that the demoulding operation is currently completed.

[0039] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A demoulding device for a deep cavity mold, comprising a base plate (6), a driving device (1), a slider seat (2) and a slider insert (3) arranged on the base plate (6); the slider seat (2) and the slider insert (3) are connected via a guide rod (203); the characteristics are: An opening and closing assembly (4) is provided on both sides of the slider seat (2) and the slider insert (3); the opening and closing assembly (4) at least comprises a pull rod (41), a telescopic block (42) and a limit block (43); the slider seat (2) is penetrated by an inclined guide column (21), and the driving device (1) is started after the two are detached; the driving end of the driving device (1) is fixedly connected to the slider seat (2), the proximal end of the pull rod (41) is fixedly connected to the side wall of the slider seat (2), and the distal end thereof moves relative to the slider insert (3); in the mold closing state, the inclined guide column (21) penetrates the slider seat (2) and the distal end thereof moves relative to the slider insert (3); The slider seat (2) is disposed on the sliding block (2), and the slider seat (2) is in contact with the slider insert (3); the distal end of the pull rod (41) does not contact the side wall of the slider insert (3), and the limit block (43) is located on the side of the telescopic block (42); in the mold opening state, the inclined guide column (21) is located above the slider seat (2), and the slider seat (2) is separated from the slider insert (3); the distal end of the pull rod (41) is in contact with the side wall of the slider insert (3) and compresses the telescopic block (42); the telescopic block (42) is partially in contact with the limit block (43).

2. The demoulding device for deep cavity mold according to claim 1, characterized in that: The width of the distal end of the pull rod (41) is greater than the width of its main body, and there is an inclined transition between the two. The distal end of the pull rod (41) is provided with a protrusion (411) protruding from its inner side wall, and in the mold opening state, the protrusion (411) abuts against the side wall of the slider insert (3).

3. The demoulding device for deep cavity mold according to claim 2, characterized in that: Both ends of the slider insert (3) are formed with placement grooves for placing the telescopic block (42); a spring abutting against the telescopic block (42) is arranged in the placement groove.

4. The demoulding device for deep cavity mold according to claim 3, characterized in that: A notch abutting against the limit block (43) is formed on one side of the telescopic block (42) away from the distal end of the pull rod (41).

5. The demoulding device for deep cavity mold according to claim 4, characterized in that: A hollow limiting protrusion (31) is provided on one side of the slider insert (3) away from the slider seat (2), and a groove is formed at the far end of the limiting protrusion (31) for abutting against the end of the deep cavity mold.

6. The demoulding device for deep cavity mold according to claim 5, characterized in that: The slider seat (2) is formed with a connection port for connecting to the driving end of the driving device (1); a slider core (22) is provided on a side of the slider seat (2) close to the slider insert (3); the slider core (22) passes through the limiting protrusion (31), and the shape of the slider core (22) is consistent with the shape of the deep cavity mold, and is plugged into the inner side of the deep cavity mold.

7. The demoulding device for a deep cavity mold according to claim 6, characterized in that: The slider insert (3) is fixedly connected to the guide rod (203); the slider seat (2) protrudes from both sides of the base plate (6) and contacts the guide rod (203); the driving device (1) drives the slider seat (2) to move along the setting direction of the guide rod (203).

8. The demoulding device for deep cavity mold according to claim 7, characterized in that: There are proximity sensors (5) on both sides of the driving device (1), and the proximity sensors (5) are used to detect the position of the slider seat (2).

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