Automatic discharging mechanism of injection mold

Abstract

The utility model provides an automatic blanking mechanism of an injection mold, which comprises a movable mold, a carrier plate is arranged on one side of the movable mold, guide holes are arranged at four corners of one side of the carrier plate, ejector rods are inserted into the guide holes, four straight holes aligned with the guide holes are arranged on one side of the movable mold facing the carrier plate, and the ejector rods are inserted into the straight holes. One end of the ejector rod is inserted into the straight hole, a limiting ring is arranged on the side, close to the movable mold, of the guide hole, the ejector rod is sleeved with the limiting ring and fixedly connected with the limiting ring, a spring is arranged on the side, away from the limiting ring, of the guide hole, the ejector rod is sleeved with the spring, and a limiting disc is arranged on the side, away from the guide hole, of the spring; the limiting disc is fixedly connected with the ejector rod, the carrier plate is fixedly connected with the movable mold through a connecting piece, and the mold has the following beneficial effect that the use amount of screws is reduced.

Description

Technical Field

[0001] The utility model relates to an automatic blanking mechanism for an injection mold, belonging to the field of molds. Background Art

[0002] The injection molding process involves injecting heated, molten material into the mold cavity under high pressure, cooling and solidifying it to produce a molded product. After the movable and fixed molds in the injection mold are separated, the movable mold's ejector pin, blocked by a blocking component, slides within a straight hole in the movable mold during its movement. This ejector pin pushes the molded product from the movable mold, allowing it to fall off the movable mold and achieve automatic unloading. To ensure balanced force on the molded product, multiple ejector pins are required to push the product forward. These multiple ejector pins are connected to the movable mold via multiple screws. This method consumes a large number of screws and reduces assembly and disassembly efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide an automatic blanking mechanism for an injection mold to solve the problems raised in the above-mentioned background technology. The present invention reduces the amount of screws used.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: an automatic unloading mechanism of an injection mold, comprising a movable mold, a carrier plate is provided on one side of the movable mold, guide holes are provided at four corners of one side of the carrier plate, a push rod is inserted in the guide hole, four straight holes aligned with the guide holes are provided on the side of the movable mold facing the carrier plate, one end of the push rod is inserted in the straight hole, a limiting ring is provided on the side of the guide hole close to the movable mold, the limiting ring is sleeved on the push rod and fixedly connected to the push rod, a spring is provided on the side of the guide hole away from the limiting ring, the spring is sleeved on the push rod, a limiting disk is provided on the side of the spring away from the guide hole, the limiting disk is fixedly connected to the push rod, and the carrier is fixedly connected to the movable mold through a connecting piece.

[0005] Furthermore, the connecting part includes a supporting part, and the supporting part is installed on the side of the movable mold facing the carrier plate, and a plug connector is connected and fixed to the end of the supporting part away from the movable mold. A plug slot that matches the plug connector is opened in the middle of one side of the carrier plate, and the plug connector is inserted in the plug slot. A pressure plate is provided on the side of the plug slot facing away from the movable mold, and a small hole is opened in the middle of one side of the pressure plate, and a screw is inserted in the small hole, and one end of the screw is threadedly connected to the plug connector.

[0006] Furthermore, the cross section of the support portion is rectangular, the cross section of the plug connector is rectangular, the cross section of the plug slot is rectangular, and the length and width of the support portion are respectively greater than the length and width of the plug connector.

[0007] Furthermore, a screw hole is provided on a side of the plug connector facing away from the support portion, one end of the screw is threadedly connected in the screw hole, and the plug connector and the support portion are an integrally formed structure.

[0008] Furthermore, an L-shaped plate is connected and fixed to the edge of the pressure plate facing away from the carrier plate. A through hole is opened on one side of the L-shaped plate and is aligned with the small hole. There is a gap between the through hole and the small hole, and one end of the screw passes through the through hole and the small hole in sequence.

[0009] Furthermore, two guide holes for inserting guide rods are opened on one side of the movable mold, and the two guide holes are symmetrically arranged on the one side of the movable mold.

[0010] Beneficial effects of the utility model:

[0011] 1. Insert the plug connector into the plug slot, then pass the screw through the pressure plate and screw it into the screw hole on the plug connector to complete the assembly of the carrier plate and the movable mold. Under the action of the limit ring, spring and limit plate, the relative position of the ejector pin and the movable mold is restricted in the initial state, so that the ejector pin is restricted in the guide hole on the carrier plate. The position of the four ejector pins can be restricted by one screw, and there is no need to use multiple screws to install one ejector pin, which reduces the use of screws and improves the efficiency of disassembly and assembly.

[0012] 2. The movable mold moves along the guide rod driven by the driving device. When the limit plate contacts the blocking component, the limit plate stops moving. At this time, the carrier plate and the limit plate jointly squeeze the spring, causing the spring to produce elastic deformation. As the chassis of the movable mold moves, one end of the ejector rod protrudes to the side of the movable mold, realizing the ejection of the injection molded product on the movable mold, which is convenient for automatic unloading of the injection molded product. After the movable mold moves in the opposite direction, the ejector rod is retracted into the straight hole under the action of the spring rebound force.

[0013] 3. When installing the screws, make the screws pass through the through-holes on the L-shaped plate and the small holes on the pressure plate in sequence, and then the L-shaped plate plays the role of supporting the screw head, so that there is a gap between the screw head and the pressure plate. When the screw and the screw hole cannot be separated normally due to rust or other reasons, the gap between the L-shaped plate and the pressure plate is used to cut off the screw, and then the carrier plate and the movable mold can be smoothly separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is a structural diagram of an automatic blanking mechanism for an injection mold of the utility model;

[0016] Figure 2 This is a front view of an automatic blanking mechanism for an injection mold according to the present invention;

[0017] Figure 3 This is a schematic diagram of the assembly of the plug connector, the support part and the movable mold in the automatic blanking mechanism of an injection mold of the utility model;

[0018] Figure 4 This is a three-dimensional diagram of a carrier plate in an automatic unloading mechanism of an injection mold according to the present invention;

[0019] Figure 5 This is a schematic diagram of the assembly of an L-shaped plate and a pressure plate in an automatic blanking mechanism of an injection mold of the present invention;

[0020] Figure 6 This is a schematic diagram of the assembly of a limit ring, a limit plate, a spring and a push rod in an automatic blanking mechanism of an injection mold of the utility model;

[0021] In the figure: 1-movable mold, 2-elevator, 3-spring, 4-limiting plate, 5-carrying plate, 6-L-shaped plate, 7-screw, 8-pressure plate, 9-limiting ring, 10-support part, 11-plug connector, 12-straight hole, 13-screw hole, 14-guide hole, 15-plug slot, 16-guide hole, 17-small hole, 18-through hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figures 1-6 The utility model provides a technical solution: an automatic unloading mechanism for an injection mold, comprising a movable mold 1, two guide holes 14 for inserting guide rods are provided on one side of the movable mold 1, the two guide holes 14 are symmetrically arranged on one side of the movable mold 1, a carrier plate 5 is provided on one side of the movable mold 1, and guide holes 16 are provided at four corners of one side of the carrier plate 5, and a push rod 2 is inserted in the guide hole 16, and four straight holes 12 aligned with the guide holes 16 are provided on the side of the movable mold 1 facing the carrier plate 5, one end of the push rod 2 is inserted in the straight hole 12, and a limiting ring 9 is provided on the side of the guide hole 16 close to the movable mold 1, the limiting ring 9 is sleeved on the push rod 2 and connected and fixed to the push rod 2, and the guide hole 16 is away from A spring 3 is provided on one side of the limiting ring 9, and the spring 3 is sleeved on the ejector rod 2. A limiting plate 4 is provided on the side of the spring 3 away from the guide hole 16. The limiting plate 4 is fixed to the ejector rod 2. The movable mold 1 moves along the guide rod under the drive of the driving device. When the limiting plate 4 contacts the blocking component, the limiting plate 4 no longer moves. At this time, the carrier plate 5 and the limiting plate 4 jointly squeeze the spring 3, causing the spring 3 to produce elastic deformation. As the chassis of the movable mold 1 moves, one end of the ejector rod 2 protrudes to one side of the movable mold 1, realizing the injection molded product on the movable mold 1, which is convenient for automatic unloading of the injection molded product. After the movable mold 1 moves in the opposite direction, the ejector rod 2 is retracted into the straight hole 12 under the action of the rebound force of the spring 3.

[0024] See Figure 1-Figure 5 , a support portion 10 is installed on the side of the movable mold 1 facing the carrier plate 5. The cross section of the support portion 10 is rectangular. A plug connector 11 is connected and fixed to the end of the support portion 10 away from the movable mold 1. The cross section of the plug connector 11 is rectangular. The plug connector 11 and the support portion 10 are an integrally formed structure. The length and width of the support portion 10 are respectively greater than the length and width of the plug connector 11. A plug slot 15 that matches the plug connector 11 is opened in the middle of one side of the carrier plate 5. The cross section of the plug slot 15 is rectangular. The plug connector 11 is inserted into the plug slot 15. A pressing plate 8 is provided on the side of the plug slot 15 away from the movable mold 1. A small hole 17 is opened in the middle of one side of the pressing plate 8. A screw 7 is inserted in the small hole 17. The plug connector A screw hole 13 is provided on the side of 11 away from the support portion 10, and one end of the screw 7 is threadedly connected to the screw hole 13, so that the plug connector 11 is inserted into the plug slot 15, and then the screw 7 is passed through the pressure plate 8 and screwed into the screw hole 13 on the plug connector 11 to complete the assembly of the carrier plate 5 and the movable mold 1. Under the action of the limit ring 9, the spring 3 and the limit plate 4, the relative position of the ejector pin 2 and the movable mold 1 in the initial state is restricted, so that the ejector pin 2 is restricted in the guide hole 16 on the carrier plate 5, so that the position of the four ejector pins 2 can be restricted by using one screw 7, and there is no need to use a plurality of screws 7 for installation of one ejector pin 2, thereby reducing the use of screws 7 and improving the efficiency of disassembly and assembly.

[0025] See Figure 1-Figure 5 , an L-shaped plate 6 is connected and fixed to the edge of the pressing plate 8 facing away from the carrier plate 5. A through-hole 18 is opened on one side of the L-shaped plate 6, which is aligned with the small hole 17. There is a gap between the through-hole 18 and the small hole 17. One end of the screw 7 passes through the through-hole 18 and the small hole 17 in sequence. When installing the screw 7, the screw 7 is passed through the through-hole 18 on the L-shaped plate 6 and the small hole 17 on the pressing plate 8 in sequence, and then the L-shaped plate 6 plays a role in supporting the head of the screw 7, so that there is a gap between the head of the screw 7 and the pressing plate 8. When the screw 7 and the screw hole 13 cannot be separated normally due to rust or other reasons, the gap between the L-shaped plate 6 and the pressing plate 8 is used to cut off the screw 7, and then the carrier plate 5 and the movable mold 1 can be smoothly separated.

[0026] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic blanking mechanism for an injection mold, comprising a movable mold (1), characterized in that: A carrier plate (5) is provided on one side of the movable mold (1), and guide holes (16) are provided at four corners of one side of the carrier plate (5). A push rod (2) is inserted into the guide hole (16). Four straight holes (12) aligned with the guide holes (16) are provided on the side of the movable mold (1) facing the carrier plate (5). One end of the push rod (2) is inserted into the straight hole (12). A limiting ring is provided on the side of the guide hole (16) close to the movable mold (1). (9), the limiting ring (9) is sleeved on the top rod (2) and is connected and fixed to the top rod (2), a spring (3) is provided on the side of the guide hole (16) away from the limiting ring (9), the spring (3) is sleeved on the top rod (2), a limiting plate (4) is provided on the side of the spring (3) away from the guide hole (16), the limiting plate (4) is connected and fixed to the top rod (2), and the carrier plate (5) is connected and fixed to the movable mold (1) through a connecting piece.

2. The automatic blanking mechanism for an injection mold according to claim 1, characterized in that: The connecting member comprises a supporting portion (10), the supporting portion (10) being installed on a side of the movable mold (1) facing the carrier plate (5), a plug connector (11) being connected and fixed to one end of the supporting portion (10) away from the movable mold (1), a plug slot (15) cooperating with the plug connector (11) being provided at a middle position on one side of the carrier plate (5), the plug connector (11) being inserted into the plug slot (15), a pressing plate (8) being provided at a side of the plug slot (15) facing away from the movable mold (1), a small hole (17) being provided at a middle position on one side of the pressing plate (8), a screw (7) being inserted into the small hole (17), one end of the screw (7) being threadedly connected to the plug connector (11).

3. The automatic blanking mechanism for an injection mold according to claim 2, characterized in that: The cross section of the support portion (10) is rectangular, the cross section of the plug connector (11) is rectangular, the cross section of the plug slot (15) is rectangular, and the length and width of the support portion (10) are respectively greater than the length and width of the plug connector (11).

4. The automatic blanking mechanism for an injection mold according to claim 2, characterized in that: A screw hole (13) is provided on a side of the plug connector (11) facing away from the support portion (10), one end of the screw (7) is threadedly connected in the screw hole (13), and the plug connector (11) and the support portion (10) are an integrally formed structure.

5. The automatic blanking mechanism for an injection mold according to claim 2, characterized in that: An L-shaped plate (6) is connected and fixed to the edge of the pressure plate (8) facing away from the carrier plate (5); a through hole (18) aligned with the small hole (17) is opened on one side of the L-shaped plate (6); a gap exists between the through hole (18) and the small hole (17); one end of the screw (7) passes through the through hole (18) and the small hole (17) in sequence.

6. The automatic blanking mechanism for an injection mold according to claim 1, characterized in that: Two guide holes (14) for inserting guide rods are provided on one side of the movable mold (1), and the two guide holes (14) are symmetrically arranged on one side of the movable mold (1).

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