An injection mold stripper

Abstract

The utility model discloses an injection mold unloading device, including chassis, demoulding mechanism, demoulding locking mechanism and locking auxiliary mechanism, the demoulding mechanism includes bottom die and demoulding frame, the demoulding locking mechanism includes card pipe and lock bar, the locking auxiliary mechanism includes operating frame and positioning plate, and the demoulding mechanism pushes out the demoulding of forming work piece, when reverse lifting, the reset spring releases the elastic force and pushes the guide frame and demoulding bar reset, has realized the automatic efficient demoulding and quick reset of work piece, has improved demoulding efficiency and production rhythm significantly, and the demoulding locking mechanism firmly locks the lock bar, and when lifting the longitudinal movement frame, the clamping block releases the unlocking fast, has realized the quick reliable fixing and convenient dismounting of demoulding frame and bottom die, improves assembly efficiency and connection reliability, and the locking auxiliary mechanism improves the positioning accuracy and operation comfort.

Description

Technical Field

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

[0002] In existing injection molding processes, the mold unloading device is an important structure for the smooth demolding of products, and its performance directly affects production efficiency and product quality. However, in the currently widely used injection mold unloading devices, the installation and disassembly of the demolding components are generally inconvenient, which not only affects the flexibility of equipment use, but also increases the difficulty of later maintenance and repair.

[0003] Specifically, in traditional injection molds, the demolding components are typically fixed inside the mold using bolts, limit blocks, etc. Their structure is relatively complex and the installation space is narrow. When the demolding components need to be replaced or repaired, the mold often needs to be partially or completely disassembled, resulting in cumbersome procedures and consuming a significant amount of manpower and time. This structural design, to some extent, reduces the continuity and maintenance efficiency of the production line.

[0004] In addition, since the demolding components are mostly installed inside the mold, precise alignment is required during assembly. Even slight deviations can lead to problems such as stuck ejector pins, uneven ejection force, or damage to the surface of the product. Furthermore, improper operation during disassembly can easily damage mold components or affect mold precision, increasing maintenance costs. Utility Model Content

[0005] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides an injection mold unloading device to solve the technical problems mentioned in the background art, such as the inconvenience of installing and disassembling the demolding components and the difficulty in disassembling and maintaining them.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an injection mold unloading device, comprising a base frame, a demolding mechanism, a demolding locking mechanism, and a locking auxiliary mechanism. The demolding mechanism includes a bottom mold and a demolding frame. The demolding frame is fixedly installed at the bottom end of the bottom mold. A guide frame is slidably installed on the demolding frame. A return spring and a demolding rod are installed at one end of the guide frame. A directional block is installed at the bottom end of the bottom mold. One end of the return spring is connected to the directional block. The demolding rod can be pushed into the bottom mold. The demolding locking mechanism includes a clamping tube and a locking rod. A clamping plate is installed at one end of the locking rod. A clamping block is slidably installed on the inner wall of the clamping tube. A guide plate is installed on the side of the clamping block. The guide plate moves longitudinally on the outer wall of the clamping tube. A guide groove is opened on the guide plate. A longitudinal sliding frame is slidably installed on the outer wall of the clamping tube. A guide block is installed on the longitudinal sliding frame. The guide block and the guide groove are slidably pushed forward.

[0007] The present invention is further configured such that the locking auxiliary mechanism includes an operating frame and a positioning plate. The operating frame is rotatably mounted on the outer wall of the clamping tube, and multiple sets of positioning plates are mounted on the bottom end of the operating frame. Positioning springs are installed on the outer wall of the clamping tube, and multiple sets of positioning springs are provided. The positioning springs can be embedded into the positioning plates step by step to make the operating frame rotate stably. The operating frame and the longitudinal movement frame are screwed together.

[0008] The present invention is further configured such that a guide rod is fixedly installed at the top end of the base frame, a top mold is fixedly installed at the top end of the guide rod, and a bottom mold is slidably installed on the guide rod.

[0009] The present invention is further configured such that a lifting hydraulic cylinder is fixedly installed on the base frame, and one end of the lifting hydraulic cylinder is connected to the side of the bottom mold. The lifting hydraulic cylinder provides stable power to drive the bottom mold to lift precisely.

[0010] The present invention is further configured such that one end of the guide frame can contact and support the top end of the base frame and top frame, so that the demolding rod pushes the workpiece in the bottom mold. The guide frame is slidably installed on the demolding frame, bearing the reset spring and the demolding rod, so as to realize the relative advancement of the demolding rod.

[0011] The present invention is further configured such that an installation plate is installed at one end of the demolding frame, the clamping tube is fixedly installed on the installation plate, the installation plate is installed at the end of the demolding frame to provide a fixed base for the clamping tube, and the locking rod can pass through the installation plate to cooperate with the clamping tube.

[0012] The present invention is further configured such that one end of the locking rod is fixedly connected to the bottom mold, and the locking rod can pass through the mounting plate and engage with the clamping tube to detachably and fixedly install the demolding frame at the bottom end of the bottom mold.

[0013] The present invention is further configured such that a longitudinal groove is provided on the side wall of the clamping tube, and the guide plate is oriented and slidably arranged in the longitudinal groove, and the clamping block can press against the clamping plate to fix the locking rod and the clamping tube relatively.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides an injection mold unloading device, which has the following beneficial effects: 1. This utility model is equipped with a demolding mechanism. The lifting hydraulic cylinder drives the bottom mold to descend precisely along the guide rod, separating it from the top mold to complete the mold opening. When the bottom mold descends to the top of the base frame, the end of the guide frame contacts the base frame support. Continuing to press down causes the guide frame to slide upward relative to the bottom mold, compressing the return spring. The demolding rod is pushed into the bottom mold along with the guide frame, ejecting the molded workpiece and demolding it. When the mold rises and falls in the reverse direction, the return spring releases its elastic force to push the guide frame and demolding rod back to their original positions. This achieves automatic and efficient demolding and rapid reset of the workpiece, significantly improving demolding efficiency and production cycle time.

[0015] 2. This utility model is equipped with a demolding locking mechanism. The locking rod is fixedly connected to the bottom mold, passes through the mounting plate, and the clamping plate end extends into the clamping tube. When the longitudinal moving frame is pressed down, the guide block pushes the guide plate to move downward in the longitudinal moving groove, driving the clamping block to slide along the inclined surface of the inner wall of the clamping tube. The radial clamping force is generated by utilizing the inclined plane principle. The clamping block presses against the clamping plate and locks the locking rod firmly. When the longitudinal moving frame is lifted, the clamping block is quickly released and unlocked, realizing the rapid and reliable fixing and convenient disassembly and assembly of the demolding frame and the bottom mold, improving assembly efficiency and connection reliability.

[0016] 3. This utility model is equipped with a locking auxiliary mechanism. When the operating frame is rotated, multiple sets of positioning plates and multiple sets of positioning springs engage sequentially. The positioning springs provide elastic positioning force to generate a clear tactile sensation, ensuring stable rotation of the operating frame. The operating frame is pushed down by a threaded longitudinal moving frame, achieving labor-saving operation and precise control. When rotating in the opposite direction, the positioning springs assist in stable reset, significantly reducing operating force and improving positioning accuracy and operating comfort. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an injection mold unloading device according to the present invention; Figure 2 This is a schematic diagram of the installation structure of the demolding component in this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the installation structure of the demolding component in this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the demolding locking mechanism and locking auxiliary mechanism in this utility model; Figure 5 This is a schematic diagram of the internal structure of the demolding locking mechanism and the locking auxiliary mechanism in this utility model.

[0018] In the diagram: 1. Base frame; 2. Bottom mold; 3. Demolding frame; 4. Guide frame; 5. Return spring; 6. Demolding rod; 7. Orienting block; 8. Pipe clamp; 9. Locking rod; 10. Clamping plate; 11. Clamping block; 12. Guide plate; 13. Guide groove; 14. Longitudinal transfer frame; 15. Guide block; 16. Operating frame; 17. Positioning plate; 18. Positioning spring; 19. Guide rod; 20. Top mold; 21. Lifting cylinder; 22. Mounting plate; 23. Longitudinal transfer groove. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] Please see Figures 1-5 A mold ejection device includes a base frame 1, a demolding mechanism, a demolding locking mechanism, and a locking auxiliary mechanism. The demolding mechanism includes a bottom mold 2 and a demolding frame 3. The demolding frame 3 is fixedly installed at the bottom end of the bottom mold 2. A guide frame 4 is slidably installed on the demolding frame 3. A return spring 5 and a demolding rod 6 are installed at one end of the guide frame 4. A directional block 7 is installed at the bottom end of the bottom mold 2. One end of the return spring 5 is connected to the directional block 7. The demolding rod 6 can be pushed into the bottom mold 2. The demolding locking mechanism includes a clamping tube 8 and a locking rod 9. A clamping plate 10 is installed at one end of the locking rod 9. A clamping block 11 is slidably installed on the inner wall of the clamping tube 8. A guide plate 12 is installed on the side of the clamping block 11. The guide plate 12 moves longitudinally on the outer wall of the clamping tube 8. A guide groove 13 is opened on the guide plate 12. A longitudinal sliding frame 14 is slidably installed on the outer wall of the clamping tube 8. A guide block 15 is installed on the longitudinal sliding frame 14. The guide block 15 and the guide groove 13 are slidably pushed forward.

[0023] In this embodiment, the lifting cylinder 21 drives the bottom mold 2 to descend along the guide rod 19, separating from the top mold 20 to complete the mold opening. When the bottom mold 2 descends to the top of the base frame 1, the end of the guide frame 4 contacts and supports the top of the base frame 1, and continues to press down. The guide frame 4 slides upward relative to the bottom mold 2, compressing the return spring 5. The demolding rod 6 is pushed into the bottom mold 2 along with the guide frame 4, ejecting the workpiece from the bottom mold 2 and demolding it. When the lifting cylinder 21 drives the bottom mold 2 to rise in the opposite direction, the return spring 5 releases its elastic force, pushing the guide frame 4 to reset. The demolding rod 6 returns to its initial position, completing one demolding cycle. One end of the locking rod 9 is fixedly connected to the bottom mold 2, and the other end passes through the mounting plate 2. 2. When the clamping plate 10 extends into the clamping tube 8 and the longitudinal moving frame 14 is pressed down, the guide block 15 on the longitudinal moving frame 14 slides in the guide groove 13 of the guide plate 12, pushing the guide plate 12 to move longitudinally downward on the outer wall of the clamping tube 8. The guide plate 12 slides in the longitudinal moving groove 23, driving the clamping block 11 to slide along the inclined surface of the inner wall of the clamping tube 8. The radial clamping force is generated by using the inclined surface principle. The clamping block 11 presses against the clamping plate 10, and the locking rod 9 is firmly locked in the clamping tube 8, realizing the reliable fixation of the demolding frame 3 and the bottom mold 2. When the longitudinal moving frame 14 is lifted, the guide block 15 pushes the guide plate 12 to move upward, and the clamping block 11 resets and releases along the inclined surface, quickly unlocking the demolding frame 3.

[0024] The locking auxiliary mechanism includes an operating frame 16 and a positioning plate 17. The operating frame 16 is rotatably mounted on the outer wall of the clamp tube 8. Multiple positioning plates 17 are mounted on the bottom end of the operating frame 16. Positioning springs 18 are installed on the outer wall of the clamp tube 8. Multiple positioning springs 18 are provided. The positioning springs 18 can be embedded into the positioning plates 17 step by step to make the operating frame 16 rotate stably. The operating frame 16 is threadedly driven into the longitudinal movement frame 14.

[0025] In this embodiment, the operating frame 16 is rotatably mounted on the outer wall of the clamp tube 8 and connected to the longitudinal moving frame 14 by threads. When the operating frame 16 is rotated, multiple sets of positioning plates 17 at the bottom of the operating frame 16 engage with multiple sets of positioning springs 18 on the outer wall of the clamp tube 8 in stages. The positioning springs 18 provide elastic positioning force, producing a clear positioning feel, ensuring that the operating frame 16 rotates stably. The rotation of the operating frame 16 pushes the longitudinal moving frame 14 down through the threads, realizing labor-saving operation and precise control of the locking depth. When the operating frame 16 is rotated in the opposite direction, the longitudinal moving frame 14 moves up to release the lock, and the positioning springs 18 assist the operating frame 16 to stably reset, making the operation convenient and labor-saving.

[0026] Please see Figures 1-5 As a further implementation of the overall equipment: a guide rod 19 is fixedly installed at the top end of the base frame 1, a top mold 20 is fixedly installed at the top end of the guide rod 19, the bottom mold 2 is slidably installed on the guide rod 19, a lifting cylinder 21 is fixedly installed on the base frame 1, and one end of the lifting cylinder 21 is connected to the side of the bottom mold 2. One end of the guide frame 4 can contact and support the top end of the top frame of the base frame 1, so that the demolding rod 6 pushes the workpiece in the bottom mold 2. An installation plate 22 is installed at one end of the demolding frame 3, the clamping tube 8 is fixedly installed on the installation plate 22, one end of the locking rod 9 is fixedly connected to the bottom mold 2, and the locking rod 9 can pass through the installation plate 22 and engage with the clamping tube 8 to detachably and fixedly install the demolding frame 3 at the bottom end of the bottom mold 2. A longitudinal movement groove 23 is opened on the side wall of the clamping tube 8, and the guide plate 12 is directionally slidably set in the longitudinal movement groove 23. The clamping block 11 can press against the clamping plate 10, so that the locking rod 9 and the clamping tube 8 are relatively fixed.

[0027] More specifically, before use, the demolding frame 3 needs to be installed at the bottom of the bottom mold 2. One end of the locking rod 9 is fixedly connected to the bottom mold 2, and the other end passes through the mounting plate 22. The clamping plate 10 extends into the clamping tube 8. The operating frame 16 is rotated, and multiple sets of positioning plates 17 and positioning springs 18 are fitted in stages to provide a stable rotational positioning feel. The operating frame 16 is pushed down by the longitudinal moving frame 14 through the thread. The guide block 15 pushes the guide plate 12 down in the guide groove 13. The guide plate 12 drives the clamping block 11 to slide along the inclined surface to generate clamping force. The clamping block 11 presses against the clamping plate 10 to firmly lock the locking rod 9, thus completing the reliable fixation of the demolding frame 3 and the bottom mold 2. After the injection molding is completed, the lifting hydraulic cylinder 21 is started to drive the bottom mold 2 to descend along the guide rod 19 and separate from the top mold 20 to complete the mold opening. The bottom mold 2 continues to descend to the top of the base frame 1, and the end of the guide frame 4 contacts the support of the base frame 1. The lifting cylinder 21 continues to press down, and the guide frame 4 slides upward relative to the bottom mold 2, compressing the return spring 5 to store energy. The demolding rod 6 is pushed into the bottom mold 2 along with the guide frame 4, ejecting the molded workpiece and demolding it. The operator removes the workpiece. When the lifting cylinder 21 drives the bottom mold 2 to rise in the opposite direction, the guide frame 4 disengages from the support of the base frame 1, the return spring 5 releases its elastic force to push the guide frame 4 to reset, and the demolding rod 6 returns to its initial position. The bottom mold 2 continues to rise and closes with the top mold 20 to begin the next injection molding cycle. When the demolding frame 3 needs to be replaced or maintained, the operating frame 16 is rotated in the opposite direction, and the positioning plate 17 and the positioning spring 18 disengage step by step. The positioning spring 18 assists in stabilizing the reset, the longitudinal frame 14 moves upward, the guide block 15 pushes the guide plate 12 upward, the clamping block 11 resets along the inclined surface to release the clamping force, the locking rod 9 is quickly pulled out, and the demolding frame 3 is disassembled.

[0028] In summary, during the use or operation of the overall equipment: when the demolding mechanism needs to be in operation, the lifting cylinder 21 drives the bottom mold 2 to descend along the guide rod 19, separating it from the top mold 20 to complete the mold opening. When the bottom mold 2 descends to the top of the base frame 1, the end of the guide frame 4 contacts and supports the top of the base frame 1, and continues to press down. The guide frame 4 slides upward relative to the bottom mold 2, compressing the return spring 5. The demolding rod 6 is pushed into the bottom mold 2 along with the guide frame 4, pushing the workpiece out of the bottom mold 2 for demolding. When the lifting cylinder 21 drives the bottom mold 2 to rise in the opposite direction, the return spring 5 releases its elastic force, pushing the guide frame 4 to reset, and the demolding rod 6 returns to its initial position, completing one demolding cycle.

[0029] When the demolding locking mechanism is in operation, one end of the locking rod 9 is fixedly connected to the bottom mold 2, and the other end passes through the mounting plate 22. The clamping plate 10 extends into the clamping tube 8. When the longitudinal moving frame 14 is pressed down, the guide block 15 on the longitudinal moving frame 14 slides in the guide groove 13 of the guide plate 12, pushing the guide plate 12 to move longitudinally downward on the outer wall of the clamping tube 8. The guide plate 12 slides directionally in the longitudinal moving groove 23, driving the clamping block 11 to slide along the inclined surface of the inner wall of the clamping tube 8. The radial clamping force is generated by using the inclined surface principle. The clamping block 11 presses against the clamping plate 10, firmly locking the locking rod 9 in the clamping tube 8, realizing the reliable fixation of the demolding frame 3 and the bottom mold 2. When the longitudinal moving frame 14 is lifted, the guide block 15 pushes the guide plate 12 to move upward, and the clamping block 11 resets and releases along the inclined surface, quickly unlocking the demolding frame 3.

[0030] When the auxiliary locking mechanism needs to be operated, the operating frame 16 is limited to rotate and installed on the outer wall of the clamp tube 8. It is connected to the longitudinal moving frame 14 by threads. When the operating frame 16 is rotated, multiple sets of positioning plates 17 at the bottom of the operating frame 16 are engaged with multiple sets of positioning springs 18 on the outer wall of the clamp tube 8 in stages. The positioning springs 18 provide elastic positioning force and produce a clear positioning feel, ensuring that the operating frame 16 rotates stably. The rotation of the operating frame 16 pushes the longitudinal moving frame 14 down through the threads, realizing labor-saving operation and precise control of the locking depth. When the operating frame 16 is rotated in the opposite direction, the longitudinal moving frame 14 moves up to release the lock. The positioning springs 18 assist the operating frame 16 to return to a stable position, making the operation convenient and labor-saving.

[0031] Before use, the demolding frame 3 needs to be installed at the bottom of the bottom mold 2. One end of the locking rod 9 is fixedly connected to the bottom mold 2, and the other end passes through the mounting plate 22. The clamping plate 10 extends into the clamping tube 8. Rotate the operating frame 16, and multiple sets of positioning plates 17 and positioning springs 18 are fitted in stages to provide a stable rotation positioning feel. The operating frame 16 pushes the longitudinal moving frame 14 down through the thread. The guide block 15 pushes the guide plate 12 down in the guide groove 13. The guide plate 12 drives the clamping block 11 to slide along the inclined surface to generate clamping force. The clamping block 11 presses against the clamping plate 10 to lock the locking rod 9 firmly, thus completing the reliable fixation of the demolding frame 3 and the bottom mold 2. After the injection molding is completed, start the lifting hydraulic cylinder 21 to drive the bottom mold 2 to descend along the guide rod 19 and separate from the top mold 20 to complete the mold opening. The bottom mold 2 continues to descend to the top of the base frame 1, and the end of the guide frame 4 contacts the support of the base frame 1. The lifting cylinder 21 continues to press down, and the guide frame 4 slides upward relative to the bottom mold 2, compressing the return spring 5 to store energy. The demolding rod 6 is pushed into the bottom mold 2 along with the guide frame 4, ejecting the molded workpiece and demolding it. The operator removes the workpiece. When the lifting cylinder 21 drives the bottom mold 2 to rise in the opposite direction, the guide frame 4 disengages from the support of the base frame 1, the return spring 5 releases its elastic force to push the guide frame 4 to reset, and the demolding rod 6 returns to its initial position. The bottom mold 2 continues to rise and closes with the top mold 20 to begin the next injection molding cycle. When the demolding frame 3 needs to be replaced or maintained, the operating frame 16 is rotated in the opposite direction, and the positioning plate 17 and the positioning spring 18 disengage step by step. The positioning spring 18 assists in stabilizing the reset, the longitudinal frame 14 moves upward, the guide block 15 pushes the guide plate 12 upward, the clamping block 11 resets along the inclined surface to release the clamping force, the locking rod 9 is quickly pulled out, and the demolding frame 3 is disassembled.

[0032] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mold unloading device for injection molds, comprising a base frame (1), a demolding mechanism, a demolding locking mechanism, and a locking auxiliary mechanism, characterized in that: The demolding mechanism includes a bottom mold (2) and a demolding frame (3). The demolding frame (3) is fixedly installed at the bottom end of the bottom mold (2). A guide frame (4) is slidably installed on the demolding frame (3). A return spring (5) and a demolding rod (6) are installed at one end of the guide frame (4). A guide block (7) is installed at the bottom end of the bottom mold (2). One end of the return spring (5) is connected to the guide block (7). The demolding rod (6) can be pushed into the bottom mold (2). The demolding locking mechanism includes a clamping tube (8) and a locking rod (9). A clamping plate (10) is installed at one end of the locking rod (9). A clamping block (11) is slidably installed on the inner wall of the clamping tube (8). A guide plate (12) is installed on the side of the clamping block (11). The guide plate (12) moves longitudinally on the outer wall of the clamping tube (8). A guide groove (13) is opened on the guide plate (12). A longitudinal sliding frame (14) is slidably installed on the outer wall of the clamping tube (8). A guide block (15) is installed on the longitudinal sliding frame (14). The guide block (15) and the guide groove (13) are slidably pushed together.

2. The injection mold unloading device according to claim 1, characterized in that: The locking auxiliary mechanism includes an operating frame (16) and a positioning plate (17). The operating frame (16) is rotatably mounted on the outer wall of the clamp tube (8). Multiple sets of positioning plates (17) are mounted on the bottom end of the operating frame (16). Positioning springs (18) are installed on the outer wall of the clamp tube (8). Multiple sets of positioning springs (18) are provided. The positioning springs (18) can be embedded into the positioning plates (17) step by step to make the operating frame (16) rotate stably. The operating frame (16) and the longitudinal movement frame (14) are screwed together.

3. The injection mold unloading device according to claim 1, characterized in that: The top end of the base frame (1) is fixedly equipped with a guide rod (19), the top end of the guide rod (19) is fixedly equipped with a top mold (20), and the bottom mold (2) is slidably installed on the guide rod (19).

4. The injection mold unloading device according to claim 1, characterized in that: A lifting cylinder (21) is fixedly installed on the base frame (1), and one end of the lifting cylinder (21) is connected to the side of the bottom mold (2).

5. The injection mold unloading device according to claim 1, characterized in that: One end of the guide frame (4) can contact and support the top end of the base frame (1) and the top frame, so that the demolding rod (6) pushes the workpiece inside the bottom mold (2).

6. The injection mold unloading device according to claim 1, characterized in that: One end of the demolding frame (3) is equipped with an installation plate (22), and the clamping tube (8) is fixedly installed on the installation plate (22).

7. The injection mold unloading device according to claim 6, characterized in that: One end of the locking rod (9) is fixedly connected to the bottom mold (2). The locking rod (9) can pass through the mounting plate (22) and engage with the clamping tube (8) to detachably and fix the demolding frame (3) at the bottom end of the bottom mold (2).

8. The injection mold unloading device according to claim 1, characterized in that: The side wall of the clamp tube (8) is provided with a longitudinal groove (23), and the guide plate (12) is oriented and slidably set in the longitudinal groove (23). The clamping block (11) can press against the clamping plate (10) so that the locking rod (9) is relatively fixed with the clamp tube (8).

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