A demolding mechanism of a load switch molding apparatus

Abstract

This application relates to the field of stamping equipment, specifically disclosing a demolding mechanism for a load switch forming equipment. The mechanism includes a worktable and a platform. A core for forming the cavity of the load switch is connected to the top of the worktable. A lifting mechanism for ejecting the load switch is provided inside the platform. The lifting mechanism includes a first connecting rod rotatably connected inside the platform, a rocker arm rotatably connected inside the platform, a second connecting rod hinged at both ends to the rocker arm and the first connecting rod respectively, a lifting seat passing through the worktable, and a third connecting rod hinged at both ends to the lifting seat and the rocker arm respectively. A pedal is fixedly connected to the end of the first connecting rod away from the second connecting rod, and the pedal passes through the side wall of the platform. The demolding mechanism of this load switch forming equipment facilitates demolding.

Description

Technical Field

[0001] This application relates to the field of stamping equipment, and in particular to a demolding mechanism for a load switch forming device. Background Technology

[0002] Load switches are key equipment in power transmission and distribution systems. Their housings are typically made of high-strength, high-precision aluminum or copper alloys through die-casting.

[0003] Existing die-casting equipment for load switch housings typically divides the mold into two side molds, a bottom mold, and an upper mold. The bottom mold is directly fixed to the ground, and the core used to form the inner cavity of the housing is directly set on the top of the bottom mold. After die casting, the housing cools and shrinks within the mold cavity, tightly wrapping around the surface of the core.

[0004] On some small, simple die-casting equipment, operators still rely on manual demolding using tools such as pry bars. This method is not only labor-intensive and inefficient, but also prone to damage to the shell due to uneven force or improper operation. Utility Model Content

[0005] To improve demolding efficiency, this application provides a demolding mechanism for a load switch molding device.

[0006] The demolding mechanism of the load switch molding equipment provided in this application adopts the following technical solution: A demolding mechanism for a load switch forming device includes a worktable and a platform. The top of the worktable is connected to a core for forming the cavity of the load switch. The platform is equipped with a lifting mechanism for ejecting the load switch. The lifting mechanism includes a first connecting rod rotatably connected to the inside of the platform, a rocker arm rotatably connected to the inside of the platform, a second connecting rod with its two ends hinged to the rocker arm and the first connecting rod respectively, a lifting seat passing through the worktable, and a third connecting rod with its two ends hinged to the lifting seat and the rocker arm respectively. A pedal is fixedly connected to the end of the first connecting rod away from the second connecting rod, and the pedal passes through the side wall of the platform.

[0007] By adopting the above technical solution, when the molded shell needs to be removed, stepping on the pedal will drive the lifting seat to push it out, achieving a more efficient demolding process. Changing manual demolding to a foot-operated method via a mechanically driven lifting seat makes the demolding process safer.

[0008] Optionally, a first rotating shaft is rotatably connected to the inner wall of the platform, the first rotating shaft passes through the first connecting rod, and the distance between the pedal and the first rotating shaft is greater than the distance between the second connecting rod and the first rotating shaft.

[0009] By adopting the above technical solution, the first force is amplified. According to the lever principle, since the distance between the pedal and the first pivot is longer, the force applied by the pedal can be amplified and act on the other end of the first link, thereby enabling the second link to move more effortlessly.

[0010] Optionally, a second rotating shaft is rotatably connected to the inner wall of the platform. The second rotating shaft passes through the rocker arm. One end of the rocker arm is hinged to the second connecting rod and is a power unit. The other end is hinged to the third connecting rod and is a resistance unit. The distance from the power unit to the second rotating shaft is greater than the distance from the resistance unit to the second rotating shaft.

[0011] By adopting the above technical solution, the second force is amplified. The force transmitted from the second connecting rod acts directly on the power unit. Since the lever arm of the power unit is longer, the resistance unit can have a greater force when it pushes upward. After the die casting is completed, the shell can be pushed out of the core, ensuring the demolding effect.

[0012] Optionally, the lifting seat includes a plurality of lifting rods and a support plate fixedly connected to the bottom of the lifting rods, wherein a hinge seat for hinged connection of a third link is fixedly connected to the side of the support plate away from the lifting rods.

[0013] By adopting the above technical solution, all the push rods are connected by a common support plate, ensuring that all the push rods move synchronously and avoiding shell deformation or jamming caused by asynchronous ejection.

[0014] Optionally, a support plate is connected to the top of several of the top rods, and the worktable surface is provided with a relief groove for placing the support plate. The top rod passes through the relief groove, and the relief groove is provided on both sides of the core part.

[0015] By adopting the above technical solution, the support plate increases the contact area with the shell, reducing wear and impact on the shell during the ejection process.

[0016] Optionally, the top rod is fitted with a spring, one end of which abuts against the bottom wall of the worktable and the other end against the top wall of the support plate.

[0017] By adopting the above technical solution, the spring connected to the push rod can achieve the effect of automatic reset. When the housing is pushed out, the spring is compressed, thereby playing a certain buffering role and preventing the support plate from directly hitting the worktable. After the housing is pushed out, the pedal is released, and the compressed spring releases the accumulated elastic potential energy, thereby causing the rocker arm, the second link, the pedal and other components to reset.

[0018] Optionally, the cross-section of the rocker arm is triangular.

[0019] By adopting the above technical solution, the triangular structure is more stable, ensuring that the rocker arm is not prone to bending, twisting or breaking when subjected to huge bending moments and torques, ensuring the accuracy of force transmission, and thus improving the service life of the entire lifting mechanism.

[0020] Optionally, the top wall of the platform body is fixedly connected with several reinforcing ribs.

[0021] By adopting the above technical solution, the load on the workbench and the top of the platform can be distributed, thereby effectively improving the overall service life.

[0022] In summary, this application has the following beneficial effects: 1. The multi-stage amplification mechanism amplifies the force applied by the operator when stepping on the pedal, allowing the casing to be detached with only a small amount of force, thus effectively improving work efficiency.

[0023] 2. By setting up support plates and support seats, the top rods can be raised synchronously and the force can be applied evenly to the shell, avoiding deformation or jamming of the shell due to asynchronous ejection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the demolding mechanism of the load switch molding equipment according to an embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of the platform body according to an embodiment of this application; Figure 3 This is a cross-sectional view of the platform body according to an embodiment of this application; Figure 4 This is a front view of the demolding mechanism of the load switch molding device according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Worktable surface; 11. Core part; 12. Relief groove; 2. Platform body; 21. First rotating shaft; 22. Second rotating shaft; 23. Reinforcing rib; 3. Lifting mechanism; 31. First connecting rod; 32. Rocker arm; 321. Power unit; 322. Resistance unit; 33. Second connecting rod; 34. Lifting seat; 341. Top rod; 342. Support plate; 343. Hinge seat; 344. Support plate; 345. Spring; 35. Third connecting rod; 36. Pedal. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a demolding mechanism for a load switch molding device. (Refer to...) Figure 1 , Figure 2The demolding mechanism of the load switch molding equipment includes a platform 2 and a worktable 1 fixedly connected to the top of the platform 2. The platform 2 has a hollow structure, and a core 11 for molding the cavity of the load switch is fixedly connected to the top of the worktable 1. A lifting mechanism 3 for ejecting the load switch is provided inside the platform 2. After die casting is completed, the lifting mechanism 3 operates to eject the molded load switch housing from the core 11, thereby completing the demolding operation.

[0028] Reference Figure 2 , Figure 3 The lifting mechanism 3 includes a first connecting rod 31 rotatably connected inside the platform 2, a rocker arm 32 rotatably connected inside the platform 2, a second connecting rod 33 with its two ends hinged to the rocker arm 32 and the first connecting rod 31 respectively, a lifting seat 34 passing through the worktable 1, and a third connecting rod 35 with its two ends hinged to the lifting seat 34 and the rocker arm 32 respectively. A pedal 36 is fixedly connected to the end of the first connecting rod 31 away from the second connecting rod 33, and the pedal 36 passes through the side wall of the platform 2. A first rotating shaft 21 and a second rotating shaft 22 are rotatably connected to the inner wall of the platform 2. The first rotating shaft 21 passes through and is fixedly connected to the first connecting rod 31, and the second rotating shaft 22 passes through and is fixedly connected to the rocker arm 32. The second rotating shaft 22 is higher than the first rotating shaft 21.

[0029] During demolding, the operator steps on the pedal 36, causing the first connecting rod 31 to rotate around the first rotating shaft 21, which in turn pulls the second connecting rod 33. The movement of the second connecting rod 33 causes the rocker arm 32 to rotate around the second rotating shaft 22. The rocker arm 32 moves towards the end of the third connecting rod 35, which in turn pushes the third connecting rod 35, causing the lifting seat 34 to move upward, thereby pushing the shell out of the core part 11 and completing the demolding operation.

[0030] Reference Figure 2 , Figure 3 The distance between pedal 36 and the first pivot 21 is greater than the distance between the second link 33 and the first pivot 21. According to the lever principle, the force applied to one end of the lever multiplied by the lever arm is equal to the force applied to the other end multiplied by its lever arm. With the first pivot 21 as the fulcrum, the force applied by pedal 36 can be amplified and act on the second link 33 due to the longer distance between pedal 36 and the first pivot 21, thus enabling the second link 33 to move with less effort.

[0031] Reference Figure 2 , Figure 3The rocker arm 32 is hinged to the second connecting rod 33 at one end, which is the power unit 321, and to the third connecting rod 35 at the other end, which is the resistance unit 322. The distance from the power unit 321 to the second rotating shaft 22 is greater than the distance from the resistance unit 322 to the second rotating shaft 22. This method amplifies the force a second time, with the force transmitted from the second connecting rod 33 acting directly on the power unit 321. Because the lever arm of the power unit 321 is longer, the resistance unit 322 can exert a greater force when it pushes upward, ensuring that the shell can be ejected from the core part 11 after die casting, thus ensuring a good demolding effect.

[0032] In this embodiment, the rocker arm 32 has a triangular cross-section. In other embodiments, the rocker arm 32 can also be L-shaped, T-shaped, or I-shaped. The triangular structure is more stable, ensuring that the rocker arm 32 is less prone to bending, twisting, or breaking when subjected to large bending moments and torques, thereby improving the service life of the entire structure.

[0033] Reference Figure 2 , Figure 3 The lifting seat 34 includes several ejector rods 341 and a support plate 342 fixedly connected to the bottom of the ejector rods 341. The bottom of the support plate 342 is fixedly connected to a hinge seat 343 for hinged to the end of the third connecting rod 35 away from the resistance part 322. This allows the support plate 342 to drive all the ejector rods 341 to lift synchronously during the lifting process, thereby ensuring that the shell is subjected to uniform force during demolding and avoiding deformation of the shell due to asynchronous ejection.

[0034] Reference Figure 2 , Figure 3 and Figure 4 A number of ejector pins 341 are fixedly connected to support plates 344 at their tops. The worktable surface 1 has recessed grooves 12 for placing the support plates 344, and the ejector pins 341 pass through these recessed grooves 12. The support plates 344 increase the contact area with the shell, preventing the ejector pins 341 from directly contacting the shell and causing wear during ejection. The recessed grooves 12 are located on both sides of the core portion 11. After molding, the shell on both sides of the core portion 11 has a thicker shell, making it less prone to deformation when the support plates 344 are lifted, and enabling it to withstand greater ejection force, thus improving demolding efficiency.

[0035] Reference Figure 2 , Figure 3 A spring 345 is sleeved on the ejector rod 341. One end of the spring 345 abuts against the top wall of the support plate 342, and the other end abuts against the bottom wall of the worktable 1. During demolding, the lifting seat 34 rises, causing the spring 345 to compress, which acts as a buffer to prevent the support plate 342 from directly impacting the worktable 1, thereby reducing the impact. After the shell is ejected, the elastic potential energy accumulated by the compression of the spring 345 is released, thereby causing the lifting mechanism 3 to reset. Reference Figure 2 , Figure 3 The platform 2 is equipped with reinforcing ribs 23 inside. One end of the reinforcing rib 23 is fixedly connected to the inner top wall of the platform 2, and the other end is fixedly connected to the inner side wall of the platform 2. The reinforcing ribs 23 can effectively improve the structural strength of the platform 2, thereby ensuring that the worktable surface 1 will not collapse during the die casting process.

[0036] The demolding mechanism of the load switch molding equipment in this application embodiment operates as follows: When demolding, pressing the pedal 36 causes the first connecting rod 31 to rotate. The end of the first connecting rod 31 away from the pedal 36 can pull the second connecting rod 33. The second connecting rod 33 drives the rocker arm 32 to rotate around the second rotating shaft 22. The rocker arm 32 pushes the lifting seat 34 through the third connecting rod 35, thereby pushing the load switch housing out.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A demoulding mechanism of a load switch forming apparatus, comprising a table top (1) and a table body (2), characterized in that: The top of the workbench (1) is connected to a core part (11) for forming the cavity of the load switch. The platform (2) is provided with a lifting mechanism (3) for ejecting the load switch. The lifting mechanism (3) includes a first connecting rod (31) rotatably connected to the inside of the platform (2), a rocker arm (32) rotatably connected to the inside of the platform (2), a second connecting rod (33) with its two ends respectively hinged to the rocker arm (32) and the first connecting rod (31), a lifting seat (34) passing through the workbench (1), and a third connecting rod (35) with its two ends respectively hinged to the lifting seat (34) and the rocker arm (32). A pedal (36) is fixedly connected to the end of the first connecting rod (31) away from the second connecting rod (33). The pedal (36) passes through the side wall of the platform (2).

2. The ejection mechanism of a load-break switch molding apparatus according to claim 1, characterized in that: The inner wall of the platform (2) is rotatably connected to a first rotating shaft (21), which passes through a first connecting rod (31). The distance between the pedal (36) and the first rotating shaft (21) is greater than the distance between the second connecting rod (33) and the first rotating shaft (21).

3. The ejection mechanism of a load break switch molding apparatus according to claim 1, characterized by: The inner wall of the platform (2) is rotatably connected to a second rotating shaft (22), which passes through a rocker arm (32). The rocker arm (32) is hinged to a second connecting rod (33) at one end, which is a power unit (321), and to a third connecting rod (35) at the other end, which is a resistance unit (322). The distance from the power unit (321) to the second rotating shaft (22) is greater than the distance from the resistance unit (322) to the second rotating shaft (22).

4. The ejection mechanism of a load break switch molding apparatus according to claim 1, characterized by: The lifting seat (34) includes a plurality of lifting rods (341) and a support plate (342) fixedly connected to the bottom of the lifting rods (341). The support plate (342) has a hinge seat (343) fixedly connected to the side away from the lifting rods (341) for the third link (35) to hinge.

5. The ejection mechanism of a load break switch forming apparatus according to claim 4, characterized in that: A support plate (344) is connected to the top of several of the top rods (341), and the worktable (1) is provided with a relief groove (12) for placing the support plate (344). The top rod (341) passes through the relief groove (12), and the relief groove (12) is provided on both sides of the core part (11).

6. The ejection mechanism of a load break switch molding apparatus according to claim 4, characterized by: The top rod (341) is fitted with a spring (345), one end of which abuts against the bottom wall of the worktable (1) and the other end abuts against the top wall of the support plate (342).

7. The ejection mechanism of a load break switch molding apparatus according to claim 1, characterized by: The cross-section of the rocker arm (32) is triangular.

8. The ejection mechanism of a load break switch molding apparatus according to claim 1, characterized by: The inner top wall of the platform (2) is fixedly connected with several reinforcing ribs (23).

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