Ejection mechanism of injection mold

Abstract

The utility model is applicable to the technical field of moulds, and provides an ejection mechanism of an injection mould, which comprises a base and a mould body, the mould body is detachably arranged at the top of the base, an accommodating cavity is arranged in the base, a drawer is arranged in the accommodating cavity in a drawing manner, and the drawer is arranged in the accommodating cavity. A threaded rod is rotationally arranged at one end of the front side of the inner cavity of the drawer through a transmission mechanism, a threaded sleeve is in threaded connection with the surface of the threaded rod, and a lifting plate is fixedly connected with the surface of the threaded sleeve. According to the ejection mechanism of the injection mold, after a motor drives a threaded rod to rotate reversely, a lifting plate is driven to descend, after an ejection block is separated from the interior of an opening and contracts into an inner cavity of a drawer, a worker can open a lock catch, after the drawer is pulled to move to the exterior of a base through a handle, a plurality of first bolts can be disassembled, and then the ejection block is disassembled; and the operation space of a worker is increased, so that the ejection block is convenient to disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to an ejection mechanism of an injection mold. Background Art

[0002] Injection mold is an important tool for producing plastic products. It heats and injects plastic material into the mold cavity, and then cools and solidifies to form a product of the desired shape. Injection mold is an indispensable and important tool for producing plastic products. Its advantages such as precision, efficiency, cost and adaptability make it widely used in various fields.

[0003] In the prior art, after the production of the injection mold is completed, the injection molded parts are mostly ejected using an ejector block. The ejector block needs to be disassembled and maintained after long-term use. However, during the maintenance process of the existing ejector mechanism, the ejector mechanism is located as a whole inside the mold, and the operating space is small. The operation of disassembling the entire mold is inconvenient, which is not conducive to maintenance and use. Utility Model Content

[0004] The utility model provides an ejection mechanism for an injection mold, aiming to solve the problem that in the existing ejection mechanism for injection molds, the ejection mechanism is entirely located inside the mold during maintenance, the operating space is narrow, and it is not conducive to maintenance and use.

[0005] The utility model is implemented as follows: an ejection mechanism of an injection mold comprises a base and a mold body, the mold body is detachably arranged on the top of the base, a receiving cavity is provided inside the base, a drawer is provided inside the receiving cavity, a threaded rod is provided at one end of the front side of the inner cavity of the drawer through a transmission mechanism, a threaded sleeve is threadedly connected to the surface of the threaded rod, a lifting plate is fixedly connected to the surface of the threaded sleeve, two ejection blocks are detachably arranged on the upper surface of the lifting plate, and openings adapted to the ejection blocks are provided on the top of the base and the bottom of the mold body;

[0006] The front side of the drawer extends to the outside of the base and is fixedly connected with a handle, and the surface of the base is provided with a lock buckle adapted to the drawer.

[0007] Preferably, the transmission mechanism includes a support plate and a motor, the support plate is fixedly connected to the bottom of the rear side of the inner wall of the drawer, the motor is fixedly connected to the surface of the support plate, the output shaft of the motor and the bottom end of the surface of the threaded rod are fixedly connected with a chain plate, and the two chain plates are connected by chain transmission.

[0008] Preferably, both ends of the bottom of the drawer are fixedly connected with ribs, and both ends of the bottom of the inner wall of the accommodating cavity are provided with sliding blocks adapted to the ribs.

[0009] Preferably, the other end of the bottom of the inner wall of the drawer is vertically and fixedly connected with a guide rod, and the other end of the lifting plate is slidably sleeved on the surface of the guide rod.

[0010] Preferably, the bottom end of the ejecting block is fixedly connected with a connecting plate, and the connecting plate is detachably connected with the upper surface of the lifting plate through a plurality of first bolts.

[0011] Preferably, a plurality of fixing plates are fixedly connected to the bottom of the side wall of the mold body, and the fixing plates are detachably connected to the top of the base through a plurality of second bolts.

[0012] Preferably, a plurality of mounting seats are fixedly connected to the bottom of the base. Beneficial effects

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] After the motor drives the chain wheel to rotate, the threaded rod can be driven to rotate. During the rotation of the threaded rod, the lifting plate is driven to move upward together through the threaded sleeve, so that the workpiece formed inside the mold body can be ejected. During the maintenance process, the motor can be driven to rotate the threaded rod in the reverse direction, driving the lifting plate to descend. After the ejecting block is separated from the inside of the opening and retracted into the inner cavity of the drawer, the staff can open the lock and pull the drawer to the outside of the base through the handle, and then remove a plurality of first bolts, and then remove the ejecting block, increasing the operation space of the staff, facilitating the disassembly operation of the ejecting block, and being beneficial to the later maintenance operation. Description of the drawings

[0015] Figure 1 is the front structural schematic diagram of the present utility model;

[0016] Figure 2 is the front sectional structural schematic diagram of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the drawer and the lifting plate in the present utility model.

[0018] In the figure: 1, base; 2, accommodation cavity; 3, rib; 4, slider; 5, drawer; 6, threaded rod; 7, threaded sleeve; 8, lifting plate; 9, support plate; 10, motor; 11, chain wheel; 12, mold body; 13, opening; 14, ejecting block; 15, connecting plate; 16, first bolt; 17, guide rod; 18, fixing plate; 19, second bolt; 20, mounting seat; 21, handle; 22, lock. Specific embodiments

[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Please refer to Figures 1-3 , the present utility model provides an ejection mechanism for an injection mold, including a base 1 and a mold body 12. The mold body 12 is detachably arranged on the top of the base 1. An accommodation cavity 2 is opened inside the base 1. A drawer 5 is slidably arranged inside the accommodation cavity 2. One end of the front side of the inner cavity of the drawer 5 is rotatably provided with a threaded rod 6 through a transmission mechanism.

[0021] A threaded sleeve 7 is threadedly connected to the surface of the threaded rod 6. A lifting plate 8 is fixedly connected to the surface of the threaded sleeve 7. Two ejector blocks 14 are detachably arranged on the upper surface of the lifting plate 8. Openings 13 adapted to the ejector blocks 14 are opened at the top of the base 1 and the bottom of the mold body 12.

[0022] The front side of the drawer 5 extends to the outside of the base 1 and is fixedly connected with a handle 21. A lock 22 adapted to the drawer 5 is arranged on the surface of the base 1.

[0023] The transmission mechanism includes a support plate 9 and a motor 10. The support plate 9 is fixedly connected to the bottom of the rear side of the inner wall of the drawer 5. The motor 10 is fixedly connected to the surface of the support plate 9. Chain wheels 11 are fixedly connected to the output shaft of the motor 10 and the bottom end of the surface of the threaded rod 6 respectively. The two chain wheels 11 are connected by a chain for transmission.

[0024] The bottom end of the ejector block 14 is fixedly connected with a connecting plate 15. The connecting plate 15 is detachably connected to the upper surface of the lifting plate 8 through a plurality of first bolts 16. Threaded holes adapted to the first bolts 16 are opened on the upper surface of the lifting plate 8.

[0025] After the motor 10 drives the chain wheel 11 to rotate, the threaded rod 6 can be driven to rotate. During the rotation of the threaded rod 6, the lifting plate 8 is driven to move upward together through the threaded sleeve 7, so that the workpiece formed inside the mold body 12 can be ejected.

[0026] During the overhaul and maintenance process, the threaded rod 6 can be driven to rotate in the reverse direction by the motor 10, driving the lifting plate 8 to descend, and the ejector block 14 is separated from the inside of the opening 13.

[0027] After the ejector block 14 retracts into the inner cavity of the drawer 5, the staff can open the lock 22, pull the drawer 5 to move outside the base 1 through the handle 21, and then remove a plurality of first bolts 16, thereby removing the ejector block 14, increasing the operating space of the staff, facilitating the disassembly operation of the ejector block 14, and being conducive to the later overhaul and maintenance operations.

[0028] Further, ribs 3 are fixedly connected to both ends of the bottom of the drawer 5, and sliders 4 adapted to the ribs 3 are provided at both ends of the bottom of the inner wall of the accommodation cavity 2.

[0029] In this embodiment, during the movement of the drawer 5, the ribs 3 are driven to slide inside the sliders 4, facilitating the limitation of the movement of the drawer 5 and being conducive to positioning after later installation, so that the ejector block 14 is stably embedded inside the opening 13.

[0030] Further, a guide rod 17 is vertically and fixedly connected to the other end of the bottom of the inner wall of the drawer 5, and the other end of the lifting plate 8 is slidably sleeved on the surface of the guide rod 17.

[0031] In this embodiment, during the movement of the lifting plate 8, the guide rod 17 supports and guides the lifting plate 8, improving the stability of the lifting plate 8 during movement.

[0032] Further, a plurality of fixing plates 18 are fixedly connected to the bottom of the side wall of the mold body 12, and the fixing plates 18 are detachably connected to the top of the base 1 through a plurality of second bolts 19.

[0033] In this embodiment, threaded holes adapted to the second bolts 19 are provided in the top of the base 1. After removing the second bolts 19, the mold body 12 can be disassembled, which is conducive to the maintenance and repair operations of the mold body 12.

[0034] Further, a plurality of mounting seats 20 are fixedly connected to the bottom of the base 1, and the plurality of mounting seats 20 facilitate the fixed installation and use of the base 1.

[0035] The working principle and usage process of the present utility model: After the present utility model is installed, when the motor 10 drives the chain wheel 11 to rotate, the threaded rod 6 can be driven to rotate. During the rotation of the threaded rod 6, the lifting plate 8 is driven to move upward together through the threaded sleeve 7, so that the workpiece formed inside the mold body 12 can be ejected. During the maintenance process, the motor 10 can be used to drive the threaded rod 6 to rotate in the reverse direction, driving the lifting plate 8 to descend. After the ejector block 14 is separated from the inside of the opening 13 and retracted into the inner cavity of the drawer 5, the staff can open the lock 22 and pull the drawer 5 to move outside the base 1 through the handle 21, and then remove a plurality of first bolts 16, and then disassemble the ejector block 14, increasing the operation space of the staff and facilitating the disassembly operation of the ejector block 14.

[0036] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An ejection mechanism for an injection mold, characterized in that: The invention comprises a base (1) and a mould body (12), wherein the mould body (12) is detachably arranged on the top of the base (1), an accommodating cavity (2) is provided inside the base (1), a drawer (5) is provided inside the accommodating cavity (2), a threaded rod (6) is provided at one end of the front side of the inner cavity of the drawer (5) for rotation through a transmission mechanism, a threaded sleeve (7) is threadedly connected to the surface of the threaded rod (6), a lifting plate (8) is fixedly connected to the surface of the threaded sleeve (7), two ejection blocks (14) are detachably arranged on the upper surface of the lifting plate (8), and openings (13) adapted to the ejection blocks (14) are provided at the top of the base (1) and the bottom of the mould body (12); The front side of the drawer (5) extends to the outside of the base (1) and is fixedly connected with a handle (21); the surface of the base (1) is provided with a lock (22) adapted to the drawer (5).

2. The ejection mechanism of an injection mold according to claim 1, characterized in that: The transmission mechanism comprises a support plate (9) and a motor (10); the support plate (9) is fixedly connected to the bottom of the rear side of the inner wall of the drawer (5); the motor (10) is fixedly connected to the surface of the support plate (9); the output shaft of the motor (10) and the bottom end of the surface of the threaded rod (6) are both fixedly connected to a chain plate (11); and the two chain plates (11) are connected via a chain transmission.

3. The ejection mechanism of an injection mold according to claim 1, characterized in that: Both ends of the bottom of the drawer (5) are fixedly connected with ribs (3), and both ends of the bottom of the inner wall of the accommodating cavity (2) are provided with sliding blocks (4) adapted to the ribs (3).

4. The ejection mechanism of an injection mold according to claim 1, characterized in that: The other end of the bottom of the inner wall of the drawer (5) is vertically fixedly connected to a guide rod (17), and the other end of the lifting plate (8) is slidably sleeved on the surface of the guide rod (17).

5. The ejection mechanism of an injection mold according to claim 1, characterized in that: A connecting plate (15) is fixedly connected to the bottom end of the ejection block (14), and the connecting plate (15) is detachably connected to the upper surface of the lifting plate (8) via a plurality of first bolts (16).

6. The ejection mechanism of an injection mold according to claim 1, characterized in that: A plurality of fixing plates (18) are fixedly connected to the bottom of the side wall of the mold body (12); the fixing plates (18) are detachably connected to the top of the base (1) via a plurality of second bolts (19).

7. The ejection mechanism of an injection mold according to claim 1, characterized in that: A plurality of mounting seats (20) are fixedly connected to the bottom of the base (1).

Images