Secondary ejection mechanism for injection molding of shell with boss

Abstract

The utility model discloses a secondary ejection mechanism for injection molding of a shell with a boss, which relates to the technical field of injection molding and comprises a workbench and a lower mold fixedly mounted at the top of the workbench. A movable plate is arranged in the lower die, a pair of boss-shaped upper dies is arranged at the top of the lower die, connecting plates are fixedly installed at the two ends of the two upper dies, a plurality of limiting plates are fixedly installed at the two ends of the lower die, each limiting plate is attached to the bottom of the corresponding connecting plate, and a T-shaped block is fixedly installed at the bottom of each connecting plate. And each T-shaped block is embedded into the corresponding limiting plate. According to the utility model, after the two upper molds are detached by utilizing the connecting part, the two upper molds can be automatically separated through mutual matching between the pushing parts when the hydraulic cylinder performs first ejection work, and then the movable plate is extruded through the pushing plate, so that a shell with a boss can be ensured to be smoothly separated from the mold; and the shell is prevented from being damaged or the boss is prevented from deforming.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a secondary ejection mechanism for injection molding with a boss shell. Background Art

[0002] Injection molding is a method of producing industrial products, usually applicable to rubber injection molding and plastic injection molding. After the workpiece is injected into the mold, an ejection mechanism is required to separate the workpiece from the mold to achieve demolding.

[0003] At present, when injection molding a shell with a boss, it is not convenient to use an ejection mechanism to eject it from the mold. If the boss shell is forcibly ejected upward from the mold, it is easy to cause the shell with the boss to fail to be smoothly ejected from the mold, and it is easy to damage the shell or deform the boss, affecting the processing effect of the shell with the boss. Utility Model Content

[0004] The utility model aims to provide a secondary ejection mechanism for injection molding with a boss shell to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A secondary ejection mechanism for injection molding with a boss shell comprises a workbench and a lower mold, wherein the lower mold is fixedly installed on the top of the workbench; a movable plate is arranged inside the lower mold, and a pair of upper molds in the shape of a boss are arranged on the top of the lower mold, connecting plates are fixedly installed at both ends of the two upper molds, and a plurality of limit plates are fixedly installed at both ends of the lower mold, each limit plate is fitted with the bottom of each connecting plate, and a T-shaped block is fixedly installed at the bottom of each connecting plate, and each T-shaped block is respectively fitted with the inside of each limit plate, and a connecting component for connecting the two upper molds is arranged on the top of the upper mold, a fixing frame is fixedly installed on the bottom of the workbench through a plurality of supporting legs, a push plate is arranged on the top of the fixing frame, and a hydraulic cylinder is fixedly connected to the bottom of the fixing frame, and an output shaft at the end of the hydraulic cylinder passes through the interior of the fixing frame and is fixedly connected to the bottom of the push plate, a movable groove matching the shape of the push plate is opened inside the workbench, a pushing component for pushing the upper mold is arranged on the periphery of the hydraulic cylinder, and a controller is fixedly installed on the top of the workbench at one end of the lower mold.

[0007] When it is necessary to demould the shell with the boss, the two upper molds can be disassembled by adjusting the connecting parts, and the push plate can be driven to move upward by controlling the hydraulic cylinder, and the connecting rod and the L-shaped rod can be driven to move upward at the same time. By setting the bottom of the fixed plate as an inclined surface, the L-shaped rod can squeeze the fixed plate outward and drive the two upper molds to move to both sides respectively, so that the two upper molds are separated. When the connecting rod is moved to the highest position, the hydraulic cylinder stops working and the first ejection work is completed. At this time, the user can manually or with the help of an external The tool removes the two upper molds from both sides respectively to avoid the upper mold being stuck on the top of the lower mold and making it inconvenient to eject the shell with the boss upward; after the upper mold is removed, the hydraulic cylinder can be driven to move upward by continuing to control the push plate, so that the top of the push plate fits with the movable plate, and the push plate can eject the movable plate upward, thereby ejecting the shell with the boss inside the lower mold upward, realizing the second ejection work, thereby completing the demoulding work of the shell with the boss, thereby ensuring that the shell with the boss can be smoothly ejected from the mold, avoiding damage to the shell or deformation of the boss.

[0008] A further improvement of the technical solution of the utility model is that the pushing component includes a plurality of connecting rods, each of which is fixedly connected to the bottom of the push plate, an L-shaped rod is fixedly installed on the bottom of each connecting rod, a plurality of fixed plates are fixedly installed on both sides of the upper mold, and the bottom of each fixed plate is provided with an inclined surface inclined toward the top inside.

[0009] The above technical solution is adopted. In this solution, the push plate and the L-shaped rod can be connected by installing a connecting rod. At the same time, an inclined surface inclined inwardly is provided at the bottom of the fixed plate to drive the L-shaped rod to squeeze the fixed plate outward, thereby separating the two upper molds.

[0010] A further improvement of the technical solution of the utility model is that: a bolt is installed on the bottom thread of each L-shaped rod, and each bolt is respectively connected with the internal thread of each connecting rod.

[0011] By adopting the above technical solution, in this solution, the connecting rod and the L-shaped rod can be separated by removing the bolts, so as to facilitate the removal of the L-shaped rod and prevent the L-shaped rod from affecting the upward movement of the connecting rod.

[0012] A further improvement of the technical solution of the utility model is that: the connecting component includes a fixed block, which is fixedly connected to the top of the upper mold on one side of the top of the lower mold, and a connecting block is fixedly installed on the top of the upper mold on the other side of the top of the lower mold, and a clamping block is fixedly connected to the other side of the fixed block, and the clamping block is embedded in the interior of the connecting block, and a limiting block is slidably installed in the interior of the connecting block through a spring, and the lower half of the limiting block is clamped in the interior of the clamping block.

[0013] The above-mentioned technical solution is adopted. In this solution, after the card block is inserted into the interior of the connecting block, the elastic force of the spring itself can form a downward pressure on the limit block, so that the limit block can be inserted into the interior of the card block, thereby connecting the fixed block and the connecting block, and realizing the connection and installation of the two upper molds. By pulling the limit block upwards, it can be separated from the interior of the card block, thereby quickly separating the fixed block and the connecting block, and realizing the disassembly of the two upper molds.

[0014] A further improvement of the technical solution of the utility model lies in that: a pair of fixers are fixedly installed on the top of the upper mold on one side of the top of the lower mold, and the two fixers are respectively located at the two ends of the fixing block; a pair of connectors are fixedly installed on the top of the upper mold on the other side of the top of the lower mold, and the two connectors are respectively located at the two ends of the connecting block; a fixing plate is fixedly installed on the other side of each fixer, and each fixing plate is respectively inserted into the interior of each connector; a plug is plugged into the top of each connector, and each plug is respectively engaged with the interior of each fixing plate.

[0015] The above technical solution is adopted. In this solution, after the two upper molds are connected, the fixer and the connector can be connected by inserting the plug into the inside of the connector and the fixing plate, thereby reinforcing the connection between the two upper molds.

[0016] A further improvement of the technical solution of the utility model is that a plurality of protrusions are fixedly installed on the top of the push plate.

[0017] By adopting the above technical solution, in this solution, by installing the protrusion, the contact area between the push plate and the movable plate can be expanded, and the contact deviation between the push plate and the movable plate can be avoided, thereby ensuring that the movable plate can maintain linear movement.

[0018] A further improvement of the technical solution of the utility model is that a plurality of slots matching the shape of the protrusions are provided at the bottom of the movable plate.

[0019] The above technical solution is adopted. In this solution, a slot is provided to facilitate the projection to be inserted into the interior of the movable plate, thereby expanding the contact area between the push plate and the movable plate and avoiding contact deviation between the push plate and the movable plate.

[0020] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0021] 1. The utility model provides a secondary ejection mechanism for injection molding of a shell with a boss. When it is necessary to demould the shell with the boss and after the two upper molds are disassembled, the hydraulic cylinder drives the push plate to move upward, and the connecting rod can be used to drive the L-shaped rod to move upward synchronously, so that the L-shaped rod squeezes the fixed plate outward, thereby automatically pushing the two upper molds outward. After the upper molds are moved outward for a distance, the user can manually or with the help of external tools remove the two upper molds, thereby completing the first ejection work. The connecting rod and the L-shaped rod can be separated by removing the bolts. By continuing to control the hydraulic cylinder to drive the push plate to move upward and fit with the bottom of the movable plate, the movable plate can be ejected upward, thereby realizing the upward ejection of the shell with the boss inside the lower mold, and realizing the second ejection work; through the secondary ejection work, it is ensured that the shell with the boss can be smoothly ejected from the mold, and the shell damage or boss deformation is avoided.

[0022] 2. The utility model provides a secondary ejection mechanism for injection molding with a boss shell. Through the mutual cooperation between the connecting parts, the limit block can be inserted into the interior of the block through a spring, thereby connecting the two upper molds. By pulling the limit block upwards, the two upper molds can be quickly disassembled, thereby improving work efficiency.

[0023] 3. The utility model provides a secondary ejection mechanism for injection molding with a boss shell, which has a reinforcing effect on the connection between the two upper molds by inserting a plug into the inside of a connector and a fixing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a three-dimensional diagram of the utility model;

[0026] Figure 2 It is a schematic diagram of the partial structure of the cross section of the fixing frame of the utility model;

[0027] Figure 3 It is a schematic diagram of the partial structure of the upper mold of the utility model;

[0028] Figure 4 This is a schematic diagram of the partial explosion structure of the upper mold of the utility model;

[0029] Figure 5 This is a schematic diagram of the partial structure of the L-shaped rod section of the utility model;

[0030] Figure 6 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0031] In the figure: 1. workbench; 2. fixing frame; 3. lower mold; 301. limit plate; 4. controller; 5. upper mold; 501. connecting plate; 502. T-block; 6. connecting component; 601. fixing block; 602. connecting block; 603. clamping block; 604. limit block; 605. spring; 7. fixing plate; 8. pushing component; 801. L-shaped rod; 802. connecting rod; 803. bolt; 9. hydraulic cylinder; 11. push plate; 1101. bump; 12. movable plate; 13. fixer; 1301. fixing plate; 14. plug; 15. connector. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the embodiments:

[0033] Example 1

[0034] like Figure 1 , Figure 2 and Figure 5 As shown, the utility model provides a secondary ejection mechanism for injection molding with a boss shell, including a workbench 1 and a lower mold 3, the lower mold 3 is fixedly installed on the top of the workbench 1; a movable plate 12 is arranged inside the lower mold 3, a pair of boss-shaped upper molds 5 are arranged on the top of the lower mold 3, connecting plates 501 are fixedly installed at both ends of the two upper molds 5, and a plurality of limit plates 301 are fixedly installed at both ends of the lower mold 3, each limit plate 301 is fitted with the bottom of each connecting plate 501, and a T-shaped block 502 is fixedly installed at the bottom of each connecting plate 501, and each T-shaped block 502 is respectively embedded with the inside of each limit plate 301, and a connecting component 6 for connecting the two upper molds 5 is arranged on the top of the upper mold 5, a fixing frame 2 is fixedly installed on the bottom of the workbench 1 through a plurality of legs, and a push plate 11 is arranged on the top of the fixing frame 2. A hydraulic cylinder 9 is fixedly connected to the bottom of the fixed frame 2, and the output shaft at the end of the hydraulic cylinder 9 passes through the interior of the fixed frame 2 and is fixedly connected to the bottom of the push plate 11. A movable groove matching the shape of the push plate 11 is opened inside the workbench 1, and a pushing component 8 for pushing the upper mold 5 is arranged on the periphery of the hydraulic cylinder 9. A controller 4 is fixedly installed on the top of the workbench 1 at one end of the lower mold 3. The pushing component 8 includes a plurality of connecting rods 802, each of which is fixedly connected to the bottom of the push plate 11, and an L-shaped rod 801 is fixedly installed on the bottom of each connecting rod 802. A plurality of fixed plates 7 are fixedly installed on both sides of the upper mold 5, and the bottom of each fixed plate 7 is provided with an inclined surface inclined toward the top inside, and a bolt 803 is threadedly installed on the bottom of each L-shaped rod 801, and each bolt 803 is respectively connected to the internal thread of each connecting rod 802.

[0035] In this embodiment, when it is necessary to demould the shell with the boss, the two upper molds 5 can be disassembled by adjusting the connecting component 6, and the push plate 11 can be driven to move upward by controlling the hydraulic cylinder 9, and the connecting rod 802 and the L-shaped rod 801 can be driven to move upward at the same time, and the bottom of the fixed plate 7 is set as an inclined surface, so that the L-shaped rod 801 can squeeze the fixed plate 7 outward and drive the two upper molds 5 to move to both sides respectively, so that the two upper molds 5 are separated. When the connecting rod 802 is moved to the highest position, the hydraulic cylinder 9 stops working and the first ejection work is completed. At this time, the user can manually or with the help of external tools remove the two upper molds 5 from both sides to prevent the upper mold 5 from being stuck in the lower mold The top of the tool 3 is not convenient for ejecting the shell with the boss upward; after the upper mold 5 is disassembled, the connecting rod 802 and the L-shaped rod 801 can be separated by removing the bolt 803, so as to facilitate the removal of the L-shaped rod 801, thereby preventing the L-shaped rod 801 from affecting the upward movement of the connecting rod 802, and continuing to control the hydraulic cylinder 9 to drive the push plate 11 to move upward, so that the top of the push plate 11 fits with the movable plate 12, and the push plate 11 can eject the movable plate 12 upward, so that the shell with the boss inside the lower mold 3 can be ejected upward, realizing the second ejection work, thereby completing the demoulding work of the shell with the boss, and further ensuring that the shell with the boss can be smoothly removed from the mold, avoiding damage to the shell or deformation of the boss.

[0036] Example 2

[0037] like Figure 1 , Figure 3 and Figure 6 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the connecting component 6 includes a fixed block 601, which is fixedly connected to the top of the upper mold 5 on one side of the top of the lower mold 3, and a connecting block 602 is fixedly installed on the top of the upper mold 5 on the other side of the top of the lower mold 3. The other side of the fixed block 601 is fixedly connected with a clamping block 603, and the clamping block 603 is embedded in the interior of the connecting block 602. The interior of the connecting block 602 is slidably installed with a limiting block 604 through a spring 605, and the lower half of the limiting block 604 is clamped into the inner part of the clamping block 603. A pair of fixers 13 are fixedly installed on the top of the upper mold 5 on one side of the top of the lower mold 3, and the two fixers 13 are respectively located at two ends of the fixing block 601; a pair of connectors 15 are fixedly installed on the top of the upper mold 5 on the other side of the top of the lower mold 3, and the two connectors 15 are respectively located at two ends of the connecting block 602; a fixing plate 1301 is fixedly installed on the other side of each fixer 13, and each fixing plate 1301 is respectively inserted into the interior of each connector 15; a plug 14 is plugged into the top of each connector 15, and each plug 14 is respectively engaged with the interior of each fixing plate 1301.

[0038] In this embodiment, after the card block 603 is inserted into the interior of the connecting block 602, the elastic force of the spring 605 itself can form a downward pressure on the limit block 604, so that the limit block 604 can be inserted into the interior of the card block 603, thereby connecting the fixing block 601 and the connecting block 602, and realizing the connection and installation of the two upper molds 5. By pulling the limit block 604 upward, it can be separated from the interior of the card block 603, so that the fixing block 601 and the connecting block 602 can be quickly separated to realize the disassembly of the two upper molds 5; after the two upper molds 5 are connected, by inserting the plug 14 into the connector 15 and the fixing plate 1301, the fixer 13 and the connector 15 can be connected, thereby reinforcing the connection between the two upper molds 5.

[0039] Example 3

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, based on Example 2, the utility model provides a technical solution: preferably, a plurality of protrusions 1101 are fixedly installed on the top of the push plate 11, and a plurality of slots matching the shape of the protrusions 1101 are opened on the bottom of the movable plate 12.

[0041] In this embodiment, by installing the protrusion 1101, after the push plate 11 and the movable plate 12 are fitted together, the protrusion 1101 can be inserted into the slot, thereby expanding the contact area between the push plate 11 and the movable plate 12, avoiding the contact deviation between the push plate 11 and the movable plate 12, and ensuring that the movable plate 12 can maintain linear movement.

[0042] The working principle of the secondary ejection mechanism for injection molding of the housing with boss is described in detail below.

[0043] like Figure 1-Figure 6As shown, after the injection molding of the housing with the boss is completed and it needs to be demoulded, the user can pull the limit block 604 upward to separate it from the inside of the block 603 and remove the plug 14, so that the two upper molds 5 can be quickly disassembled, and then the hydraulic cylinder 9 can be used to drive the push plate 11 to move upward, and at the same time drive the connecting rod 802 to move upward, so that the L-shaped rod 801 squeezes the fixing plate 7 outward, so that the two upper molds 5 can be separated. When the connecting rod 802 is moved to the highest position, the hydraulic cylinder 9 can be used to drive the push plate 11 to move upward, and at the same time drive the connecting rod 802 to move upward, so that the L-shaped rod 801 squeezes the fixing plate 7 outward, so that the two upper molds 5 can be separated. The hydraulic cylinder 9 stops working. At this time, the user can remove the two upper molds 5 manually or with the help of external tools to complete the first ejection work, and then remove the bolt 803 to separate the connecting rod 802 and the L-shaped rod 801. The user continues to control the hydraulic cylinder 9 to drive the push plate 11 to move upward so that it fits with the bottom of the movable plate 12 and pushes the movable plate 12 upward, so that the shell with the boss inside the lower mold 3 can be ejected upward, realizing the second ejection work, thereby completing the demolding work of the shell with the boss.

[0044] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A secondary ejection mechanism for injection molding with a boss housing, comprising a workbench (1) and a lower mold (3), wherein the lower mold (3) is fixedly mounted on the top of the workbench (1); characterized in that: A movable plate (12) is arranged inside the lower mold (3); a pair of boss-shaped upper molds (5) are arranged on the top of the lower mold (3); connecting plates (501) are fixedly installed at both ends of the two upper molds (5); a plurality of limit plates (301) are fixedly installed at both ends of the lower mold (3); each of the limit plates (301) is fitted with the bottom of each of the connecting plates (501); a T-shaped block (502) is fixedly installed at the bottom of each of the connecting plates (501); each of the T-shaped blocks (502) is respectively fitted with the inside of each of the limit plates (301); a member for connecting the two upper molds (5) is arranged on the top of the upper mold (5). The bottom of the workbench (1) is fixedly mounted with a fixed frame (2) through a plurality of legs, a push plate (11) is arranged on the top of the fixed frame (2), a hydraulic cylinder (9) is fixedly connected to the bottom of the fixed frame (2), an output shaft at the end of the hydraulic cylinder (9) passes through the interior of the fixed frame (2) and is fixedly connected to the bottom of the push plate (11), a movable groove matching the shape of the push plate (11) is provided inside the workbench (1), a pushing component (8) for pushing the upper mold (5) is arranged on the periphery of the hydraulic cylinder (9), and a controller (4) is fixedly mounted on the top of the workbench (1) at one end of the lower mold (3).

2. A secondary ejection mechanism for injection molding with a boss housing according to claim 1, characterized in that: The pushing component (8) includes a plurality of connecting rods (802), each of which is fixedly connected to the bottom of the push plate (11), and an L-shaped rod (801) is fixedly installed at the bottom of each connecting rod (802). A plurality of fixing plates (7) are fixedly installed on both sides of the upper mold (5), and the bottom of each fixing plate (7) is provided with an inclined surface inclined toward the top inward.

3. A secondary ejection mechanism for injection molding with a boss housing according to claim 2, characterized in that: A bolt (803) is threadedly mounted on the bottom of each L-shaped rod (801), and each bolt (803) is respectively connected to the internal thread of each connecting rod (802).

4. The secondary ejection mechanism for injection molding with a boss housing according to claim 1, characterized in that: The connecting component (6) comprises a fixed block (601), the fixed block (601) being fixedly connected to the top of the upper mold (5) on one side of the top of the lower mold (3), a connecting block (602) being fixedly installed on the top of the upper mold (5) on the other side of the top of the lower mold (3), a clamping block (603) being fixedly connected to the other side of the fixed block (601), the clamping block (603) being fitted into the interior of the connecting block (602), a limiting block (604) being slidably installed in the interior of the connecting block (602) via a spring (605), the lower half of the limiting block (604) being clamped into the interior of the clamping block (603).

5. The secondary ejection mechanism for injection molding with a boss housing according to claim 4, characterized in that: A pair of fixers (13) are fixedly installed on the top of the upper mold (5) on one side of the top of the lower mold (3), and the two fixers (13) are respectively located at two ends of the fixing block (601). A pair of connectors (15) are fixedly installed on the top of the upper mold (5) on the other side of the top of the lower mold (3), and the two connectors (15) are respectively located at two ends of the connecting block (602). A fixing plate (1301) is fixedly installed on the other side of each of the fixers (13), and each fixing plate (1301) is respectively inserted into the interior of each of the connectors (15). A plug (14) is plugged into the top of each of the connectors (15), and each plug (14) is respectively engaged with the interior of each of the fixing plates (1301).

6. The secondary ejection mechanism for injection molding with a boss housing according to claim 1, characterized in that: A plurality of protrusions (1101) are fixedly mounted on the top of the push plate (11).

7. A secondary ejection mechanism for injection molding with a boss housing according to claim 6, characterized in that: The bottom of the movable plate (12) is provided with a plurality of slots matching the shape of the protrusions (1101).

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