A mold opening device for injection molds

Abstract

The utility model discloses a kind of mold opening devices of injection mold, apply in injection mold technical field, including first fixed seat and second fixed seat, between the first fixed seat and second fixed seat respectively setting with movable mould and static mould, the two sides of movable mould and the two sides of static mould are all provided with connecting block, the side of two described connecting block is all provided with connecting seat;The utility model is designed with bidirectional screw rod between two connecting seats, cooperate two connecting blocks with bidirectional screw rod screw connection, when rotating bidirectional screw rod, the distance between two connecting blocks can be driven to adjust, can make the wedge-shaped clamping block on connecting block be clamped into the wedge-shaped clamping groove inside two sides of movable mould or static mould, without using screw fixed, the replacement of convenient mold, save the time spent due to the replacement of different molds of mold opening device, and under the wedge-shaped structure of wedge-shaped clamping block and wedge-shaped clamping groove, fixed stable.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and specifically relates to an injection mold opening device. Background Technology

[0002] The "mold opening device" of an injection mold does not refer to an independent component of the mold itself, but rather to the entire system that realizes the mold opening action. Currently, most injection molds open by relying on a high-power hydraulic cylinder to directly drive the moving platen to move back and forth, thereby driving the moving mold and stationary mold of the injection mold to open.

[0003] Currently, traditional mold opening devices still have certain problems in use. For example, the moving mold and stationary mold of traditional mold opening devices are usually locked on the template with screws. Although this can ensure relatively stable fixing performance, when it is necessary to remove the moving mold and stationary mold on the template to replace other molds, the large number of screws used makes disassembly and replacement extremely troublesome and inconvenient, which seriously affects the efficiency of injection molding. Utility Model Content

[0004] The purpose of this utility model is to provide a mold opening device for injection molds, which has the advantage of being easy to disassemble and assemble.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a mold opening device for an injection mold, comprising a first fixed seat and a second fixed seat, wherein a moving mold and a stationary mold are respectively arranged between the first fixed seat and the second fixed seat, and connecting blocks are provided on both sides of the moving mold and both sides of the stationary mold, and connecting seats are provided on the opposite sides of the two connecting blocks, and a bidirectional threaded rod threadedly connected to the connecting blocks is rotatably connected between the two connecting seats, and a wedge-shaped locking block is assembled on the opposite side of the two connecting blocks, and wedge-shaped locking grooves for engaging with the wedge-shaped locking blocks are provided on both sides of the moving mold and both sides of the stationary mold, and an adjusting bolt threadedly connected to the connecting seats is threadedly connected on the side of the first fixed seat away from the second fixed seat.

[0006] The above technical solution is adopted: This utility model has a bidirectional threaded rod designed between two connecting seats, which is threadedly connected to two connecting blocks. When the bidirectional threaded rod is rotated, the distance between the two connecting blocks can be adjusted, so that the wedge-shaped locking blocks on the connecting blocks can be locked into the wedge-shaped slots on both sides of the moving mold or the stationary mold. No screws are needed for fixing, which facilitates mold replacement and saves the time spent by the mold opening device on changing different molds. Moreover, the wedge-shaped structure of the wedge-shaped locking blocks and wedge-shaped slots ensures stable fixation.

[0007] The present invention is further configured such that a stroke screw is symmetrically rotatably connected between the first fixed seat and the second fixed seat, the two stroke screws are respectively threadedly connected to the connecting seats on both sides of the moving mold, and the two stroke screws are respectively slidably connected to the connecting seats on both sides of the stationary mold.

[0008] The above technical solution is adopted: when the stroke screw rotates, the threaded ends of the two stroke screws can drive the connecting seats on both sides of the moving mold to move synchronously, so as to move towards or away from the stationary mold.

[0009] The present invention is further configured such that one end of the travel screw extends through to the other side of the second fixed seat and is fixedly sleeved with a first gear, the surface of the first gear meshes with a second gear that is rotatably connected to the second fixed seat via a rotating shaft, a third gear meshes between the two second gears, and a shaft that is rotatably connected to the second fixed seat is fixedly sleeved at the center of the third gear.

[0010] Using the above technical solution: when the third gear rotates, it can drive the two second gears to rotate in the same direction. The rotation of the second gears can drive the first gear to rotate in the same direction, so that the two first gears rotate in the same direction, thereby driving the two stroke screws to rotate in the same direction.

[0011] The present invention is further configured such that a servo motor is mounted on the side of the second fixed base away from the first fixed base, and the output end of the servo motor is bolted to one end of the shaft.

[0012] Using the above technical solution: when the servo motor starts, it can drive the shaft at the center of the third gear to rotate, thereby driving the third gear to rotate.

[0013] The present invention is further configured such that sliding limit rods are symmetrically mounted on opposite sides of the two connecting blocks, and the sliding limit rods are slidably connected to the connecting seats.

[0014] By adopting the above technical solution, the sliding limit of the connecting block can be achieved when it moves.

[0015] The present invention is further configured such that a guide rod is fixedly connected between the first fixed seat and the second fixed seat, and the number of the guide rods is four, and the guide rods are slidably connected to the connecting seat.

[0016] The above technical solution is adopted to limit the position of the connector.

[0017] The present invention is further configured such that an injection nozzle through hole is provided at the center of the first fixed seat, and an ejector unit mounting hole is provided at the center of the moving mold.

[0018] The above technical solution facilitates the connection between the external injection gun and the stationary mold, and facilitates the installation of the pusher unit on the moving mold.

[0019] In summary, this utility model has the following beneficial effects: This utility model features a bidirectional threaded rod between two connecting seats, which is threadedly connected to two connecting blocks. When the bidirectional threaded rod is rotated, the distance between the two connecting blocks can be adjusted, allowing the wedge-shaped locking blocks on the connecting blocks to engage with the wedge-shaped slots on both sides of the moving or stationary mold. This eliminates the need for screws, facilitating mold replacement and saving time spent on changing different molds. Furthermore, the wedge-shaped structure of the wedge-shaped locking blocks and slots ensures stable fixation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural connection diagram of this utility model; Figure 3 This is a schematic diagram of the static mold structure of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This is a partial structural connection diagram of this utility model.

[0021] Reference numerals in the attached drawings: 1. First fixed seat; 2. Second fixed seat; 3. Moving mold; 4. Stationary mold; 5. Connecting block; 6. Connecting seat; 7. Bidirectional threaded rod; 8. Wedge-shaped locking block; 9. Wedge-shaped locking groove; 10. Adjusting bolt; 11. Stroke screw; 12. First gear; 13. Second gear; 14. Third gear; 15. Shaft; 16. Servo motor; 17. Sliding limit rod; 18. Guide rod; 19. Injection nozzle through hole; 20. Ejector unit mounting hole. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example 1: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A mold opening device for an injection mold includes a first fixed seat 1 and a second fixed seat 2. A moving mold 3 and a stationary mold 4 are respectively disposed between the first fixed seat 1 and the second fixed seat 2. Connecting blocks 5 are provided on both sides of the moving mold 3 and both sides of the stationary mold 4. Connecting seats 6 are provided on opposite sides of the two connecting blocks 5. A bidirectional threaded rod 7, threaded to the connecting blocks 5, is rotatably connected between the two connecting seats 6. A wedge-shaped locking block 8 is assembled on opposite sides of the two connecting blocks 5. Wedge-shaped slots 9 are provided on both sides of the moving mold 3 and both sides of the stationary mold 4 to engage with the wedge-shaped locking blocks 8. The first fixed seat 1 is located away from the second fixed seat. One side of 2 is threaded with an adjusting bolt 10 that is rotatably connected to the connecting seat 6. A bidirectional threaded rod 7 is designed between the two connecting seats 6, which is threaded with the two connecting blocks 5. When the bidirectional threaded rod 7 is rotated, the distance between the two connecting blocks 5 can be adjusted. The wedge-shaped locking block 8 on the connecting block 5 can be locked into the wedge-shaped slots 9 on both sides of the moving mold 3 or the stationary mold 4 without the need for screw fixing. This facilitates mold replacement and saves time spent on mold opening devices due to the need to change different molds. Furthermore, the wedge-shaped structure of the wedge-shaped locking block 8 and the wedge-shaped slot 9 ensures stable fixation.

[0024] refer to Figure 1 and Figure 2 A stroke screw 11 is symmetrically rotatably connected between the first fixed seat 1 and the second fixed seat 2. The two stroke screws 11 are threadedly connected to the connecting seats 6 on both sides of the moving mold 3, and the two stroke screws 11 are slidably connected to the connecting seats 6 on both sides of the stationary mold 4. By setting the stroke screws 11, when the stroke screws 11 rotate, the threaded ends of the two stroke screws 11 can drive the connecting seats 6 on both sides of the moving mold 3 to move synchronously, so as to move towards or away from the stationary mold 4.

[0025] refer to Figure 1 and Figure 2 One end of the stroke screw 11 extends through to the other side of the second fixed seat 2 and is fixedly sleeved with a first gear 12. The surface of the first gear 12 meshes with a second gear 13 that is rotatably connected to the second fixed seat 2 via a rotating shaft. A third gear 14 meshes between the two second gears 13. A shaft 15 that is rotatably connected to the second fixed seat 2 is fixedly sleeved at the center of the third gear 14. By setting the first gear 12, the second gear 13, the third gear 14 and the shaft 15, when the third gear 14 rotates, it can drive the two second gears 13 to rotate in the same direction. The rotation of the second gears 13 can drive the first gear 12 to rotate in the same direction, so that the two first gears 12 rotate in the same direction, thereby driving the two stroke screws 11 to rotate in the same direction.

[0026] refer to Figure 1 and Figure 2A servo motor 16 is mounted on the side of the second fixed base 2 away from the first fixed base 1. The output end of the servo motor 16 is bolted to one end of the shaft 15. By setting the servo motor 16, when the servo motor 16 is started, it can drive the shaft 15 at the center of the third gear 14 to rotate, thereby driving the third gear 14 to rotate.

[0027] refer to Figure 1 Each of the two connecting blocks 5 is symmetrically equipped with a sliding limit rod 17 on one side opposite to the other. The sliding limit rod 17 is slidably connected to the connecting seat 6. By setting the sliding limit rod 17, the sliding limit of the connecting block 5 can be limited when it moves.

[0028] refer to Figure 1 , Figure 4 and Figure 5 A guide rod 18 is fixedly connected between the first fixed seat 1 and the second fixed seat 2. There are four guide rods 18. The guide rods 18 are slidably connected to the connecting seat 6. The connecting seat 6 is limited by setting the guide rods 18.

[0029] refer to Figure 1 and Figure 2 The first fixed base 1 has an injection nozzle through hole 19 at its center, and the moving mold 3 has an ejector unit mounting hole 20 at its center. By setting the injection nozzle through hole 19 and the ejector unit mounting hole 20, it is convenient for the external injection gun to pass through and connect with the stationary mold 4, and convenient for the ejector unit to be installed on the moving mold 3.

[0030] Brief description of usage: In use, the first fixed seat 1 and the second fixed seat 2 are fixed on the external bracket. When the servo motor 16 is started, it can drive the two stroke screws 11 to rotate simultaneously. The connecting seats 6 on both sides of the moving mold 3 move to the connecting seats 6 on both sides of the stationary mold 4 to complete the mold closing action. Conversely, it is the mold opening action. When it is necessary to change the mold, according to the size of the mold, rotate the bidirectional threaded rod 7 to adjust the distance between the two connecting blocks 5 so that the wedge-shaped locking blocks 8 on the connecting blocks 5 can be inserted into the wedge-shaped locking grooves 9 on both sides of the moving mold 3 or the stationary mold 4 to complete the fixing. Conversely, it is the disassembly. No screws are needed for fixing, which is convenient for mold replacement and saves the time spent by the mold opening device on changing different molds. Moreover, the wedge-shaped structure of the wedge-shaped locking blocks 8 and the wedge-shaped locking grooves 9 ensures stable fixing.

[0031] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A mold opening device for an injection mold, comprising a first fixed base (1) and a second fixed base (2), characterized in that: A moving mold (3) and a stationary mold (4) are respectively provided between the first fixed seat (1) and the second fixed seat (2). Connecting blocks (5) are provided on both sides of the moving mold (3) and both sides of the stationary mold (4). Connecting seats (6) are provided on the opposite sides of the two connecting blocks (5). A bidirectional threaded rod (7) is rotatably connected between the two connecting seats (6) and threaded to the connecting blocks (5). A wedge-shaped locking block (8) is assembled on the opposite side of the two connecting blocks (5). A wedge-shaped locking groove (9) is opened on both sides of the moving mold (3) and both sides of the stationary mold (4) to engage with the wedge-shaped locking block (8). An adjusting bolt (10) is threadedly connected to the connecting seat (6) on the side of the first fixed seat (1) away from the second fixed seat (2).

2. The mold opening device for an injection mold according to claim 1, characterized in that: The first fixed seat (1) and the second fixed seat (2) are symmetrically rotatably connected by a stroke screw (11). The two stroke screws (11) are respectively threaded to the connecting seats (6) on both sides of the moving mold (3), and the two stroke screws (11) are respectively slidably connected to the connecting seats (6) on both sides of the stationary mold (4).

3. The mold opening device for an injection mold according to claim 2, characterized in that: One end of the travel screw (11) extends through to the other side of the second fixed seat (2) and is fixedly sleeved with a first gear (12). The surface of the first gear (12) is meshed with a second gear (13) that is rotatably connected to the second fixed seat (2) via a rotating shaft. A third gear (14) meshes between the two second gears (13). A shaft (15) that is rotatably connected to the second fixed seat (2) is fixedly sleeved at the center of the third gear (14).

4. The mold opening device for an injection mold according to claim 3, characterized in that: The second fixed seat (2) is equipped with a servo motor (16) on the side away from the first fixed seat (1), and the output end of the servo motor (16) is bolted to one end of the shaft (15).

5. The mold opening device for an injection mold according to claim 1, characterized in that: Each of the two connecting blocks (5) is symmetrically equipped with a sliding limit rod (17) on one side opposite to the other, and the sliding limit rod (17) is slidably connected to the connecting seat (6).

6. The mold opening device for an injection mold according to claim 1, characterized in that: A guide rod (18) is fixedly connected between the first fixed seat (1) and the second fixed seat (2). There are four guide rods (18), and the guide rods (18) are slidably connected to the connecting seat (6).

7. The mold opening device for an injection mold according to claim 1, characterized in that: The first fixed base (1) has an injection nozzle through hole (19) at its center, and the moving mold (3) has an ejector unit mounting hole (20) at its center.

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