Secondary ejection injection mold for centrifugal impeller

Abstract

The invention relates to the technical field of injection molding equipment, in particular to a centrifugal impeller secondary ejection injection mold which comprises an upper mold plate, a lower mold plate and a mold frame according to the technical scheme, an injection molding base is mounted at the upper end of the lower mold plate, and an injection molding cavity base is arranged at the upper end of the injection molding base; a multi-combination die mechanism is arranged in the die frame; the mold closing mechanism comprises a moving block, a mounting piece, a mounting block and a mold lifting mechanism, and the front end of the mounting piece is connected with a driving air cylinder. According to the injection mold, the multiple sets of mold assembling mechanisms and the mold lifting mechanisms are additionally arranged in the injection mold, through the mold assembling mechanisms capable of automatically moving, an injection molding part can construct a complete injection molding cavity, the mold assembling mechanisms move in the mold taking process, mold taking is easier, and the mold lifting mechanisms and the mold assembling mechanisms move together, so that the mold taking efficiency is improved. And the mold closing mechanism is loosened.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to a centrifugal impeller secondary ejection injection mold. Background Art

[0002] Injection mold technology is an important part of modern manufacturing. Its development has gone through the stage from hand model to simple mechanization, then to microcomputer control, all-electric injection molding, and now the intelligent stage. With the continuous advancement of technology, the precision, efficiency and quality of injection molds have been significantly improved. Secondary ejection technology, as an important innovation in injection mold technology, provides strong support for the manufacture of complex parts such as centrifugal impellers. Centrifugal impellers are a key part widely used in various mechanical equipment. Their manufacturing quality directly affects the performance and life of the equipment. In the manufacturing process of centrifugal impellers, injection molds are indispensable tools.

[0003] The prior art also has the following defects during use:

[0004] In the injection molding process of the injection mold in the prior art, because the overall mold frame needs to be installed by mold closing, including the need to stack multiple layers of frames together, the stacked injection mold frames, if not pressed and straightened by some mechanisms, may cause the overall injection mold frame to be unstable, thereby causing accidents in the injection molding process, and after the injection molding is completed, in order to facilitate mold removal, after the upper installation layer is ejected once, the injection cavity part needs to be ejected a second time, otherwise too many parts need to be removed for mold removal, and the relatively complex structure of the centrifugal impeller causes inconvenience in mold removal.

[0005] In view of this, we propose a centrifugal impeller secondary ejection injection mold to solve the existing problems. Summary of the invention

[0006] The object of the present invention is to provide a centrifugal impeller secondary ejection injection mold to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: a centrifugal impeller secondary ejection injection mold, comprising a mold upper plate, a mold lower plate and a mold frame, an injection base is installed on the upper end of the mold lower plate, an injection cavity base is arranged on the upper end of the injection base, a one-to-one corresponding multi-combination mold mechanism and a multi-group mold lifting mechanism are arranged inside the mold frame, and a driving cylinder is connected to one side of the mold clamping mechanism;

[0008] The driving cylinder drives the mold clamping mechanism to move to realize the process of mold separation, and drives the mold lifting mechanism to push the injection cavity base upward to facilitate mold removal.

[0009] Preferably, the mold closing mechanism comprises a moving block, a mounting member, a mounting block and a mold lifting mechanism, the front end of the mounting member is connected to a driving cylinder, the rear end of the mounting member is connected to a control rod, the mounting member is connected to the moving block through the control rod, the upper end of the moving block is fixed with a mounting plate, the upper end of the mounting plate is installed with a connecting rod, the end of the connecting rod away from the mounting plate is connected with a sliding block, the sliding block is slidably installed on the mounting block, the front end of the sliding block is connected to a closing module, a moving latch is installed in the sliding block, and the lower end of the moving latch is connected to the mold lifting mechanism;

[0010] Preferably, the mold lifting mechanism includes a fixed platform, a base plate, a first telescopic rod and a second telescopic rod, the upper end of the base plate is penetrated upward by the fixed platform and the first telescopic rod and the second telescopic rod are installed, the top of the first telescopic rod is fixed to the lower end of the movable pin, the top of the second telescopic rod is provided with a support platform, and the support platform is installed at the lower end of the injection cavity base.

[0011] Preferably, a movable rack is provided inside the mounting member, the movable rack is fixedly connected to the control rod, the movable rack is externally connected to a main gear, the main gear is externally meshed with a slave gear, a lifting rod is installed inside the slave gear, and a fixed pressure pad and a movable pressure pad are installed on the upper end of the lifting rod;

[0012] The driving cylinder drives the control rod to drive the moving rack to move inward, and through the meshing relationship between the moving rack and the main gear and the slave gear, the moving pressure pad is driven downward to compact and stabilize the mold frame.

[0013] Preferably, the fixed pressure pad is fixedly mounted on the surface of the upper plate of the mold, and the lifting rod passes through the fixed pressure pad and is upwardly connected to the movable pressure pad.

[0014] Preferably, a movable rod is fixed to the upper end of the interior of the mold frame, and the movable latch is slidably mounted on the movable latch.

[0015] Preferably, the movable latch is a latch block with an inclined angle as a whole, and a slot with an inclined angle is provided inside the sliding block, and the movable latch can be inserted into the sliding block in a coordinated manner.

[0016] Preferably, an injection port is installed at the center of the upper plate of the mold, the injection port is downwardly connected to an injection tube, and the lower end of the injection tube is connected to the injection cavity.

[0017] Preferably, the mold lower plate is equipped with multiple groups of ejector rods, the ejector rods are upwardly connected to an ejector layer, springs are wound around the ejector rods, and multiple groups of fixing pins are arranged on the side of the mold frame.

[0018] Preferably, seven combined mold mechanisms are equidistantly installed inside the mold frame, and the central connection of the mold mechanisms is set as an injection cavity.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention adds a multi-combination mold mechanism and a mold lifting mechanism to the injection mold. Through the mold clamping mechanism that can move by itself, the injection part can construct a complete injection cavity, and the mold clamping mechanism moves during the mold removal process, making the mold removal easier. The mold lifting mechanism and the mold clamping mechanism move together. When the mold clamping mechanism is dispersed, the movable pin moves upward, and the mold lifting mechanism simultaneously pushes the injection molding base to move upward, further enhancing the convenience of the mold removal process; when the mold clamping mechanism is brought together, the movable pin is inserted downward to stabilize the mold clamping mechanism, and through the meshing relationship between the movable rack and the multiple sets of gears, the movable pressure pad is driven to move. After the mold clamping mechanism constructs a complete injection cavity, the movable pressure pad can stably press the entire injection molding frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention;

[0025] Figure 5 It is a front view structural schematic diagram of the clamping mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure of the mold clamping mechanism and the injection molding base of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure between the mounting member and the movable pressure pad of the present invention.

[0028] In the figure: 1. mold upper plate; 2. mold frame; 3. mold lower plate; 4. injection port; 5. fixed latch; 6. ejection layer; 7. injection tube; 8. injection cavity; 9. mold clamping mechanism; 10. ejector rod; 11. injection base; 12. spring; 13. clamping module; 14. installation moving rod; 15. moving latch; 16. sliding block; 17. connecting rod; 18. mounting block; 19. mounting plate; 20. moving block; 21. control rod; 22. mounting part; 23. driving cylinder; 24. mold lifting mechanism; 25. injection cavity base; 26. support platform; 27. fixed platform; 28. second telescopic rod; 29. ​​bottom plate; 30. first telescopic rod; 31. moving pressure pad; 32. fixed pressure pad; 33. lifting rod; 34. main gear; 35. slave gear; 36. moving rack. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] like Figure 1-Figure 7 As shown, a centrifugal impeller secondary ejection injection mold proposed by the present invention comprises a mold upper plate 1, a mold lower plate 3 and a mold frame 2, an injection molding base 11 is installed on the upper end of the mold lower plate 3, an injection molding cavity base 25 is arranged on the upper end of the injection molding base 11, and a multi-combination molding mechanism 9 is arranged inside the mold frame 2;

[0032] The mold upper plate 1, the mold lower plate 3 and the mold frame 2 as a whole constitute a complete injection mold. The injection cavity base 25 is the bottom mechanism of the injection molding chamber, and the complete injection cavity 8 is formed by combining the mold clamping mechanism 9 and the injection cavity base 25.

[0033] The mold clamping mechanism 9 includes a moving block 20, a mounting member 22, a mounting block 18 and a mold lifting mechanism 24. The front end of the mounting member 22 is connected to a driving cylinder 23, the rear end of the mounting member 22 is connected to a control rod 21, the mounting member 22 is connected to the moving block 20 through the control rod 21, the upper end of the moving block 20 is fixed with a mounting plate 19, the upper end of the mounting plate 19 is installed with a connecting rod 17, the end of the connecting rod 17 away from the mounting plate 19 is connected with a sliding block 16, the sliding block 16 is slidably mounted on the mounting block 18, the front end of the sliding block 16 is connected to the closing module 13, the sliding block 16 is installed with a moving latch 15, and the lower end of the moving latch 15 is connected to the mold lifting mechanism 24;

[0034] The driving cylinder 23 controls the control rod 21 to move, thereby driving the moving block 20 to move, the moving block 20 drives the mounting plate 19 to move, and the mounting plate 19 drives the sliding block 16 to move through the connecting rod 17. When the sliding block 16 moves outward, the moving latch 15 is subjected to the pressure during the movement of the sliding block 16, so that the moving latch 15 moves upward through the installation moving rod 14; when the sliding block 16 moves inward, the moving latch 15 is affected by its own gravity, so that the moving latch 15 will be inserted into the open groove in the sliding block 16.

[0035] The mold lifting mechanism 24 includes a fixed platform 27, a bottom plate 29, a first telescopic rod 30 and a second telescopic rod 28. The first telescopic rod 30 and the second telescopic rod 28 are installed on the upper end of the bottom plate 29 through the fixed platform 27. The top of the first telescopic rod 30 is fixed to the lower end of the moving latch 15. The top of the second telescopic rod 28 is provided with a support platform 26, which is installed at the lower end of the injection cavity base 25.

[0036] In the process of the movable latch 15 following the movement of the sliding block 16, in the process of the movable latch 15 moving upward, the first telescopic rod 30 follows the movable latch 15 to move upward, and the second telescopic rod 28 follows the first telescopic rod 30 to move synchronously. When the second telescopic rod 28 moves upward, it can drive the support platform 26 to move. In the process of the movement of the support platform 26, the injection cavity base 25 is moved by the support platform 26, and can drive the molded product to move, thereby facilitating mold removal.

[0037] The driving cylinder 23 drives the moving block 20 and the mounting plate 19 to move outward, and drives the sliding block 16 and the closing module 13 to separate the mold through the connecting rod 17. At the same time, the moving latch 15 is subjected to the pressure applied by the sliding block 16 during the movement, and moves upward as a whole, thereby driving the first telescopic rod 30 and the second telescopic rod 28 to move upward synchronously, thereby ejecting the injection cavity base 25, making it convenient to remove the mold.

[0038] Furthermore, a movable rack 36 is provided in the mounting member 22, and the movable rack 36 is fixedly connected to the control rod 21, and the movable rack 36 is externally connected to the main gear 34, and the main gear 34 is externally meshed and connected to the slave gear 35, and a lifting rod 33 is installed inside the slave gear 35, and a fixed pressure pad 32 and a movable pressure pad 31 are installed on the upper end of the lifting rod 33;

[0039] The driving of the driving cylinder 23 will drive the control rod 21 to move, and the control rod 21 and the moving rack 36 are fixedly connected. The moving rack 36 follows the main gear 34 to move, and the main gear 34 drives the slave gear 35 to move. The rotation of the slave gear 35 will drive the lifting rod 33 to move, and the movement of the lifting rod 33 will drive the moving pressure pad 31 to move. When the control rod 21 moves outward, the lifting rod 33 is driven to rotate and move downward through the meshing connection relationship between the moving rack 36, the main gear 34 and the slave gear 35, and the moving pressure pad 31 is close to the fixed pressure pad 32 to press the entire injection molding frame; when the control rod 21 moves inward, it drives the lifting rod 33 to rotate and move upward, and the moving pressure pad 31 is away from the fixed pressure pad 32 to avoid pressing the entire injection molding frame.

[0040] The driving cylinder 23 drives the control rod 21 to drive the moving rack 36 to move inward, and through the meshing relationship between the moving rack 36 and the main gear 34 and the slave gear 35, the moving pressure pad 31 is driven downward to press and stabilize the entire mold frame 2.

[0041] Furthermore, the fixed pressure pad 32 is fixedly mounted on the surface of the mold upper plate 1 , and the lifting rod 33 passes through the fixed pressure pad 32 and is upwardly connected to the movable pressure pad 31 .

[0042] The lifting rod 33 can drive the movable pressure pad 31 to move, thereby pressing the entire frame to avoid other situations during the injection molding process. An elastic layer is provided on the upper surface of the fixed pressure pad 32, which can avoid damage to the fixed pressure pad 32 during the movement of the movable pressure pad 31.

[0043] Furthermore, a moving rod 14 is fixedly installed at the upper end of the interior of the mold frame 2 , and a moving latch 15 is slidably installed on the moving latch 15 .

[0044] The movable latch 15 is subjected to the pressure of the side sliding block 16 and can slide on the installation movable rod 14 to a certain extent.

[0045] Furthermore, the movable latch 15 is a latch block with an inclined angle as a whole, and a slot with an inclined angle is provided inside the sliding block 16 , so that the movable latch 15 can be inserted into the sliding block 16 in a coordinated manner.

[0046] By means of a certain tilt angle, the movable latch 15 can smoothly operate in the slot inside the sliding block 16 during the movement of the sliding block 16 .

[0047] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A centrifugal impeller secondary ejection injection mold, comprising a mold upper plate (1), a mold lower plate (3) and a mold frame (2), characterized in that: An injection molding base (11) is installed at the upper end of the mold lower plate (3), and an injection molding cavity base (25) is arranged at the upper end of the injection molding base (11). Multiple mold combination mechanisms (9) and multiple mold lifting mechanisms (24) are arranged in a one-to-one correspondence inside the mold frame (2), and a driving cylinder (23) is connected to one side of the mold combination mechanism. In the process of driving the mold clamping mechanism (9) to move and realize mold separation, the driving cylinder (23) drives the mold lifting mechanism (24) to push the injection cavity base (25) upwards to facilitate mold removal.

2. The centrifugal impeller secondary ejection injection mold according to claim 1, characterized in that: The mold closing mechanism (9) comprises a moving block (20), a mounting member (22), a mounting block (18) and a mold lifting mechanism (24); the front end of the mounting member (22) is connected to a driving cylinder (23); the rear end of the mounting member (22) is connected to a control rod (21); the mounting member (22) is connected to the moving block (20) via the control rod (21); the upper end of the moving block (20) is fixed with a mounting plate (19); the upper end of the mounting plate (19) is mounted with a connecting rod (17); the end of the connecting rod (17) away from the mounting plate (19) is connected to a sliding block (16); the sliding block (16) is slidably mounted on the mounting block (18); the front end of the sliding block (16) is connected to a closing module (13); a moving latch (15) is mounted in the sliding block (16); the lower end of the moving latch (15) is connected to the mold lifting mechanism (24).

3. A centrifugal impeller secondary ejection injection mold according to claim 2, characterized in that: The mold lifting mechanism (24) comprises a fixed platform (27), a base plate (29), a first telescopic rod (30) and a second telescopic rod (28); the upper end of the base plate (29) is provided with the first telescopic rod (30) and the second telescopic rod (28) passing through the fixed platform (27) upwardly; the top of the first telescopic rod (30) is fixed to the lower end of the movable latch (15); the top of the second telescopic rod (28) is provided with a support platform (26); and the support platform (26) is installed at the lower end of the injection cavity base (25).

4. The centrifugal impeller secondary ejection injection mold according to claim 1, characterized in that: A movable rack (36) is arranged inside the mounting member (22), the movable rack (36) and the control rod (21) are fixedly connected, the movable rack (36) is externally connected to a main gear (34), the main gear (34) is externally meshedly connected to a slave gear (35), a lifting rod (33) is installed inside the slave gear (35), and a fixed pressure pad (32) and a movable pressure pad (31) are installed on the upper end of the lifting rod (33); The driving cylinder (23) drives the control rod (21) to drive the movable rack (36) to move inward, and through the meshing relationship between the movable rack (36) and the main gear (34) and the slave gear (35), the movable pressure pad (31) is driven to press downward to stabilize the mold frame (2).

5. The centrifugal impeller secondary ejection injection mold according to claim 4, characterized in that: The fixed pressure pad (32) is fixedly mounted on the surface of the mold upper plate (1), and the lifting rod (33) passes through the fixed pressure pad (32) and is upwardly connected to the movable pressure pad (31).

6. The centrifugal impeller secondary ejection injection mold according to claim 1, characterized in that: A moving rod (14) is fixedly mounted on the upper end of the interior of the mold frame (2), and the moving latch (15) is slidably mounted on the moving latch (15).

7. The centrifugal impeller secondary ejection injection mold according to claim 6, characterized in that: The movable latch (15) is a latch block with an inclined angle as a whole, and a slot with an inclined angle is arranged inside the sliding block (16), and the movable latch (15) can be inserted into the sliding block (16) in a coordinated manner.

8. The centrifugal impeller secondary ejection injection mold according to claim 1, characterized in that: An injection port (4) is installed at the center of the upper plate (1) of the mold, the injection port (4) is connected downwardly to an injection tube (7), and the lower end of the injection tube (7) is connected to an injection cavity (8).

9. The centrifugal impeller secondary ejection injection mold according to claim 1, characterized in that: The mold lower plate (3) is equipped with multiple groups of ejector rods (10), the ejector rods (10) are connected to an ejector layer (6) upward, springs (12) are wound around the ejector rods (10), and multiple groups of fixing pins (5) are arranged on the side of the mold frame (2).

10. The centrifugal impeller secondary ejection injection mold according to claim 1, characterized in that: Seven combined mold mechanisms (9) are equidistantly installed inside the mold frame (2), and the central connection of the mold mechanisms (9) is set as an injection cavity (8).

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