Demolding ejection assembly of injection molding machine

Abstract

The utility model discloses a demoulding ejection assembly of an injection molding machine, which comprises a lower mould, an ejection plate is arranged in a cavity of the lower mould through a hidden groove, a rotating cavity and an equipment cavity are arranged in the lower mould, a screw rod is rotatably arranged in the rotating cavity, a driving motor connected with the screw rod is arranged in the equipment cavity, and the driving motor is connected with the screw rod. And a transverse transmission shaft and a vertical transmission shaft are arranged on the outer wall of the lower mold through a lower stabilizing frame and an upper stabilizing frame, the transverse transmission shaft is connected with a driving motor through an inner transmission mechanism, and the transverse transmission shaft and the vertical transmission shaft are connected through an outer transmission mechanism. Through the arrangement of the screw rod, the driving motor, the lifting plate, the connecting rod and the top plate, the quick ejection and falling operation of a formed product is realized. By arranging a vertical transmission shaft, an incomplete gear, a rack, an impact block, a sliding rod, a fixing frame, a spring and the like, the impact block can impact the lower mold in a reciprocating mode, and demolding is facilitated by means of vibration generated by impact.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to a demoulding and ejecting component of an injection molding machine. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. After the injection molding machine is completed, the molded product needs to be pushed out of the mold cavity through the demoulding mechanism.

[0003] The demoulding assembly in the prior art basically relies on components such as cylinders to drive the movement of components such as ejector plates, thereby realizing the ejection and removal operation of the injection molded product. Some injection molded products have a high degree of adhesion to the mold cavity, and forced ejection will cause damage to the outer wall of the injection molded product, thereby affecting the final quality of the injection molded product. In order to address this problem, it is necessary to improve the demoulding ejection assembly commonly used in the prior art, so an injection molding machine demoulding ejection assembly is proposed herein. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a demoulding and ejecting component for an injection molding machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A demoulding and ejecting assembly of an injection molding machine comprises a lower mold, a top plate is provided in the mold cavity of the lower mold through a hidden groove, a rotating cavity and an equipment cavity are provided inside the lower mold, a screw is rotatably provided in the rotating cavity, a driving motor connected to the screw is provided in the equipment cavity, the top plate is connected to the screw through a connecting mechanism, a horizontal transmission shaft and a vertical transmission shaft are provided on the outer wall of the lower mold through a lower stabilizing frame and an upper stabilizing frame, the horizontal transmission shaft is connected to the driving motor through an internal transmission mechanism, the horizontal transmission shaft and the vertical transmission shaft are connected through an external transmission mechanism, a rack is provided on the side of the lower mold, the rack is connected to the vertical transmission shaft through a meshing mechanism, an impact block is installed on the end of the rack, a movable opening is provided on the rack, a sliding rod is provided in the movable opening, and a fixing frame fixedly connected to the lower mold is provided on the sliding rod through an elastic mechanism sliding sleeve.

[0007] Preferably, the connection mechanism includes a lifting plate threadedly mounted on a screw rod, a connecting rod is mounted on the lifting plate, the connecting rod slides through the upper inner wall of the rotating cavity and extends into the cavity on the lower mold, and the end of the connecting rod is connected to the top plate.

[0008] Preferably, the internal transmission mechanism comprises an internal transmission gear mounted on the output shaft of the driving motor and one end of the transverse transmission shaft, and the two internal transmission gears are vertically meshed with each other.

[0009] Preferably, the external transmission mechanism comprises an external transmission gear mounted on the other end of the horizontal transmission shaft and one end of the vertical transmission shaft, and the two external transmission gears are vertically meshed with each other.

[0010] Preferably, the meshing mechanism comprises an incomplete gear mounted on the other end of the vertical transmission shaft, and the incomplete gear is arranged corresponding to the rack.

[0011] Preferably, the elastic mechanism comprises a spring slidably sleeved on the slide rod, and two ends of the spring are elastically connected to the outer wall of the fixing frame and the inner wall of the movable opening respectively.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting the screw, driving motor, lifting plate, connecting rod and top plate, the quick ejection and removal operation of the molded product is realized.

[0014] 2. By setting a vertical transmission shaft, an incomplete gear, a rack, an impact block, a slide bar, a fixed frame and a spring, the impact block can reciprocately impact the lower mold, and the vibration generated by the impact can help demoulding.

[0015] 3. By setting a transverse transmission shaft, an internal transmission gear and an external transmission gear, etc., the ejection of the top plate and the reciprocating impact of the impact block are synchronized, which improves the linkage effect of the device and thus improves the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a demoulding and ejecting assembly of an injection molding machine proposed by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure at A;

[0018] Figure 3 It is a schematic diagram of the structure of components such as the screw and the internal transmission gear.

[0019] In the figure: 1 lower mold, 2 hidden groove, 3 top plate, 4 connecting rod, 5 lower stabilizing frame, 6 horizontal transmission shaft, 7 vertical transmission shaft, 8 external transmission gear, 9 incomplete gear, 10 rack, 11 impact block, 12 slide bar, 13 fixed frame, 14 spring, 15 upper stabilizing frame, 16 rotating cavity, 17 equipment cavity, 18 driving motor, 19 internal transmission gear, 20 screw, 21 lifting plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A demoulding and ejecting assembly of an injection molding machine includes a lower mold 1. A top plate 3 is provided in the cavity of the lower mold 1 through a hidden groove 2. In an initial state, the top plate 3 is hidden in the hidden groove 2 so as not to affect the injection molding.

[0022] A rotating chamber 16 and an equipment chamber 17 are provided inside the lower mold 1. A screw 20 is rotatably provided in the rotating chamber 16. A driving motor 18 connected to the screw 20 is provided in the equipment chamber 17. The top plate 3 is connected to the screw 20 through a connecting mechanism. A horizontal transmission shaft 6 and a vertical transmission shaft 7 are provided on the outer wall of the lower mold 1 through a lower stabilizing frame 5 and an upper stabilizing frame 15. The horizontal transmission shaft 6 is connected to the driving motor 18 through an internal transmission mechanism, and the horizontal transmission shaft 6 and the vertical transmission shaft 7 are connected through an external transmission mechanism. A rack 10 is provided on the side of the lower mold 1, and the rack 10 is connected to the vertical transmission shaft 7 through a meshing mechanism. An impact block 11 is installed on the end of the rack 10, and a movable opening is provided on the rack 10. A sliding rod 12 is provided in the movable opening, and a fixed frame 13 fixedly connected to the lower mold 1 is provided on the sliding sleeve of the elastic mechanism.

[0023] The connecting mechanism includes a lifting plate 21 threadedly sleeved on the screw 20, and a connecting rod 4 is installed on the lifting plate 21. The connecting rod 4 slides through the inner wall of the rotating cavity 16 and extends into the cavity on the lower mold 1. The end of the connecting rod 4 is connected to the top plate 3. The connecting rod 4 is designed in this way so that the lifting plate 21 has a limiting effect, so that it will not rotate with the screw 20. When the screw 20 rotates, the lifting plate 21 will only rise and fall.

[0024] The internal transmission mechanism includes an internal transmission gear 19 installed on the output shaft of the driving motor 18 and one end of the transverse transmission shaft 6. The two internal transmission gears 19 are vertically meshed with each other. The internal transmission gear 19 can transmit power to the screw 20 and the transverse transmission shaft 6 when the driving motor 18 rotates.

[0025] The external transmission mechanism includes an external transmission gear 8 installed on the other end of the horizontal transmission shaft 6 and one end of the vertical transmission shaft 7. The two external transmission gears 8 are vertically meshed. The external transmission gear 8 can transmit power to the vertical transmission shaft 7 when the horizontal transmission shaft 6 rotates to make it rotate synchronously.

[0026] The meshing mechanism includes an incomplete gear 9 installed on the other end of the vertical transmission shaft 7. The incomplete gear 9 is arranged corresponding to the rack 10. When the toothed part of the incomplete gear 9 meshes with the teeth on the rack 10, the rotation of the incomplete gear 9 can drive the rack 10 to move.

[0027] The elastic mechanism includes a spring 14 slidably mounted on the slide rod 12, and the two ends of the spring 14 are elastically connected to the outer wall of the fixed frame 13 and the inner wall of the movable opening respectively. The elastic potential energy provided by the spring 14 can realize the movement and reset of the rack 10 and the impact block 11 when the part without teeth on the incomplete gear 9 corresponds to the rack 10.

[0028] When the utility model is used, after starting the driving motor 18, the screw 20 can be directly driven to rotate. When the screw 20 rotates, the lifting plate 21 cooperates with the connecting rod 4 to drive the top plate 3 to rise, and the formed article in the lower mold 1 can be ejected. In this process, the driving motor 18 cooperates with the internal transmission gear 19 to drive the horizontal transmission shaft 6 to rotate, and the horizontal transmission shaft 6 cooperates with the external transmission gear 8 to drive the vertical transmission shaft 7 to rotate. When the vertical transmission shaft 7 rotates, it can drive the incomplete gear 9 to rotate. When the incomplete gear 9 rotates, after the toothed part is meshed with the rack 10, in the subsequent rotation process, it can drive the rack 10 and the impact block 11 to move away from the outer wall of the lower mold 1, and when the toothless part of the incomplete gear 9 corresponds to the rack 10, under the reset action of the spring 14, the rack 10 and the impact block 11 are moved and reset, and the impact of the lower mold 1 is achieved with the help of the impact block 11. The vibration generated by the impact will weaken the bonding force between the lower mold 1 and the product, thereby helping the product to be ejected from the lower mold 1.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection molding machine demoulding and ejection assembly, comprising a lower mold (1), characterized in that: A top plate (3) is provided in the cavity of the lower mold (1) through a hidden groove (2); a rotating cavity (16) and an equipment cavity (17) are provided inside the lower mold (1); a screw (20) is rotatably provided in the rotating cavity (16); a driving motor (18) connected to the screw (20) is provided in the equipment cavity (17); the top plate (3) is connected to the screw (20) through a connecting mechanism; a horizontal transmission shaft (6) and a vertical transmission shaft (7) are provided on the outer wall of the lower mold (1) through a lower stabilizing frame (5) and an upper stabilizing frame (15); the horizontal transmission shaft ( 6) is connected to a driving motor (18) through an internal transmission mechanism, the horizontal transmission shaft (6) and the vertical transmission shaft (7) are connected through an external transmission mechanism, a rack (10) is provided on the side of the lower mold (1), the rack (10) is connected to the vertical transmission shaft (7) through a meshing mechanism, an impact block (11) is installed on the end of the rack (10), a movable opening is provided on the rack (10), a sliding rod (12) is provided in the movable opening, and a fixing frame (13) fixedly connected to the lower mold (1) is provided on the sliding rod (12) through an elastic mechanism sliding sleeve.

2. The demoulding and ejecting assembly of an injection molding machine according to claim 1, characterized in that: The connection mechanism comprises a lifting plate (21) threadedly sleeved on a screw rod (20), a connection rod (4) being mounted on the lifting plate (21), the connection rod (4) slidingly passing through the upper inner wall of the rotating cavity (16) and extending into the cavity on the lower mold (1), the end of the connection rod (4) being connected to the top plate (3).

3. The demoulding and ejecting assembly of an injection molding machine according to claim 2, characterized in that: The internal transmission mechanism comprises an internal transmission gear (19) mounted on the output shaft of the driving motor (18) and one end of the transverse transmission shaft (6), and the two internal transmission gears (19) are vertically meshed with each other.

4. The demoulding and ejecting assembly of an injection molding machine according to claim 3, characterized in that: The external transmission mechanism comprises an external transmission gear (8) mounted on the other end of the horizontal transmission shaft (6) and one end of the vertical transmission shaft (7), and the two external transmission gears (8) are vertically meshed with each other.

5. The demoulding and ejecting assembly of an injection molding machine according to claim 4, characterized in that: The meshing mechanism comprises an incomplete gear (9) mounted on the other end of the vertical transmission shaft (7), and the incomplete gear (9) is arranged corresponding to the rack (10).

6. The demoulding and ejecting assembly of an injection molding machine according to claim 5, characterized in that: The elastic mechanism comprises a spring (14) slidably sleeved on the slide rod (12), and two ends of the spring (14) are elastically connected to the outer wall of the fixing frame (13) and the inner wall of the movable opening respectively.

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