A power controller housing mold for a construction machine

Abstract

The utility model relates to mould technical field, concretely is a kind of power controller shell mould for engineering machinery, including mould base, fixed mould plate and movable mould plate, the central position of fixed mould plate is equipped with the central hole of vertical arrangement, the central hole is equipped with the central ejector rod of movable up and down, the fixed mould plate is arranged with multiple side holes with central hole as pivot, the side ejector rod of movable up and down is installed in each side hole, the central ejector rod and side ejector rod are moved by thread transmission, and move up and down synchronously by gear linkage, the surface of mould base is rotatably connected with the vertical arrangement of driving screw rod, the driving screw rod is coaxial with central ejector rod, and driving screw rod movable penetrates mould base and is threadedly connected with central ejector rod after, the utility model is aimed at solving the problem that power controller shell for engineering machinery is thin-walled part with mounting foot, prone to mounting foot pulling deformation in demolding process.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a power controller housing mold for engineering machinery. Background Technology

[0002] The housing of the power controller for construction machinery is a thin-walled part with mounting feet. After injection molding, due to the uneven distribution of adhesion and demolding forces between the plastic part and the mold cavity, the mounting feet are prone to stretching and deformation during demolding, resulting in a decrease in product assembly accuracy and failure to meet the requirements of construction machinery. The demolding mechanism of existing molds is mostly a single push rod ejection, which is difficult to adapt to the uniform demolding requirements of this type of housing with mounting feet. Utility Model Content

[0003] The purpose of this utility model is to provide a mold for the housing of a power controller for engineering machinery, so as to solve the problem that the housing of the power controller for engineering machinery is a thin-walled part with mounting feet, and the mounting feet are prone to stretching and deformation during demolding.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A power controller housing mold for engineering machinery includes a mold base, a fixed mold plate, and a movable mold plate. The fixed mold plate has a vertically arranged central hole at its center, and a central push rod that can move up and down is installed in the central hole. The fixed mold plate has multiple side holes arranged in an array around the central hole as the axis, and each side hole has a side push rod that can move up and down. The central push rod and the side push rods move through threaded transmission and move up and down synchronously through gear linkage.

[0006] Preferably, a vertically arranged active screw is rotatably connected to the surface of the mold base. The active screw is coaxial with the central push rod, and the active screw moves through the mold base and is threadedly connected to the central push rod.

[0007] Preferably, the surface of the mold base is rotatably connected with a plurality of vertically arranged driven screws, and the number of driven screws corresponds one-to-one with the side push rods. After the top end of each driven screw moves through the mold base, it is coaxially threadedly connected to the corresponding side push rod.

[0008] Preferably, a first bevel gear is coaxially fixedly connected to the surface of the driving screw, and a fourth bevel gear is coaxially fixedly connected to the surface of each driven screw. Each fourth bevel gear rotates synchronously and at the same speed as the first bevel gear through a transmission assembly.

[0009] Preferably, the transmission assembly includes a second bevel gear, a transmission shaft, and a third bevel gear. The second bevel gear is coaxially fixedly connected to one end of the transmission shaft and meshes with the first bevel gear. The third bevel gear is coaxially fixedly connected to the other end of the transmission shaft and meshes with the fourth bevel gear.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By designing the side push rod to correspond to the lower end of the housing mounting foot, the mounting foot is actively pushed upward by the side push rod during demolding, rather than passively following the movement of the housing body. This fundamentally avoids the tensile stress caused by the delayed force on the mounting foot, and prevents the mounting foot from deforming due to the tensile stress caused by the delayed force. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the overall cross-section of this utility model;

[0014] Figure 3 This is a schematic diagram of the cross-section of the moving template of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the template of this utility model;

[0016] Figure 5 This is a cross-sectional structural diagram of the central top rod and the side top rod of this utility model.

[0017] In the diagram: 1. Mold base; 2. Fixed mold plate; 3. Moving mold plate; 4. Center hole; 5. Center ejector rod; 6. Driving screw; 7. First bevel gear; 8. Second bevel gear; 9. Drive shaft; 10. Third bevel gear; 11. Fourth bevel gear; 12. Driven screw; 13. Side ejector rod; 14. Side hole; 15. Pad block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1 to 5 This utility model provides a technical solution.

[0020] A mold for a power controller housing for engineering machinery includes a mold base 1, a fixed mold plate 2, and a movable mold plate 3. The fixed mold plate 2 has a vertically arranged central hole 4 at its center. A central ejector rod 5 that can move up and down is installed in the central hole 4. The fixed mold plate 2 has multiple side holes 14 arranged in an array around the central hole 4. Each side hole 14 has a side ejector rod 13 that can move up and down. The central ejector rod 5 and the side ejector rod 13 can move by threaded transmission and can move up and down synchronously by gear linkage. After the power controller housing is injection molded in the cavity formed by the closed fixed mold plate 2 and the movable mold plate 3, the movable mold plate 3 is moved upward first. Then, the central ejector rod 5 and the side ejector rod 13 move upward synchronously by gear linkage, pushing the housing formed on the fixed mold plate 2 upward and completing the demolding.

[0021] Among them, multiple side ejector rods 13 are located at the lower end of the mounting feet of the power controller housing. Synchronous ejection allows the mounting feet to actively move upward under force, rather than passively following the movement of the housing body. This ensures that the housing is subjected to uniform force during ejection and effectively avoids the mounting feet from being stretched or deformed during demolding.

[0022] The surface of the mold base 1 is rotatably connected to a vertically arranged active screw 6. The active screw 6 is coaxial with the central ejector rod 5, and the active screw 6 moves through the mold base 1 and is threadedly connected to the central ejector rod 5. The bottom end of the active screw 6 is provided with a first limit key. The first limit key only restricts the active screw 6 from moving up and down, and does not affect its rotation. When the active screw 6 rotates, it can drive the central ejector rod 5 to move up and down through the threaded transmission.

[0023] The active screw 6 is driven by a motor (not shown in the motor diagram). The specific installation method is as follows: the motor is fixed at the bottom of the mold base 1, and the output end of the motor moves through the bottom of the mold base 1 and is coaxially fixedly connected to the active screw 6. Starting the motor will drive the active screw 6 to rotate.

[0024] Multiple vertically arranged driven screws 12 are rotatably connected to the surface of the mold base 1, and the number of driven screws 12 corresponds one-to-one with the side ejector rods 13. The top end of each driven screw 12 moves through the mold base 1 and is coaxially threaded to the corresponding side ejector rod 13. The bottom end of the driven screw 12 is provided with a second limit key. This second limit key only restricts the driven screw 12 from moving up and down and does not affect its rotation. The driving screw 6 and the driven screw 12 are linked by gears and can achieve synchronous rotation. The thread parameters on the surfaces of the two are completely consistent. Therefore, when the driven screw 12 rotates, it can drive the side ejector rod 13 to move up and down through the thread transmission, and finally realize the synchronous lifting and lowering of the side ejector rod 13 and the center ejector rod 5.

[0025] The surface of the driving screw 6 is coaxially fixedly connected to the first bevel gear 7, and the surface of each driven screw 12 is coaxially fixedly connected to the fourth bevel gear 11. The parameters of the first bevel gear 7 and the fourth bevel gear 11 are completely identical, and each fourth bevel gear 11 rotates synchronously and at the same speed with the first bevel gear 7 through a transmission assembly.

[0026] The transmission assembly includes a second bevel gear 8, a drive shaft 9, and a third bevel gear 10. The parameters of the second bevel gear 8 and the third bevel gear 10 are completely identical. The second bevel gear 8 is coaxially fixedly connected to one end of the drive shaft 9 and meshes with the first bevel gear 7. The third bevel gear 10 is coaxially fixedly connected to the other end of the drive shaft 9 and meshes with the fourth bevel gear 11. When the motor drives the driving screw 6 to rotate, it will sequentially drive the first bevel gear 7, the second bevel gear 8, the drive shaft 9, the third bevel gear 10, and the fourth bevel gear 11 to rotate, ultimately driving the driven screw 12 to rotate synchronously at the same speed.

[0027] The mold base 1 and the fixed template 2 cooperate to form a cavity. This cavity is used to accommodate the first bevel gear 7, the second bevel gear 8, the drive shaft 9, the third bevel gear 10 and the fourth bevel gear 11, and to provide rotation space for these components. The size of the cavity matches the shape and assembly position of the aforementioned transmission components, so that the second bevel gear 8, the drive shaft 9 and the third bevel gear 10 can rotate stably in the cavity without displacement.

[0028] Each side push rod 13 is fixedly connected to a pad 15 at its top. The pad 15 is located at the lower end of the corresponding molded housing mounting foot. The shape of the pad 15 is perfectly matched with the contour of the housing mounting foot, thereby ensuring that the mounting foot is subjected to uniform force when ejected.

[0029] The specific solution is as follows: When the mold is closed, the moving platen 3 is controlled to move vertically downward along the guide mechanism until it is completely closed with the fixed platen 2. The two cooperate to form a closed cavity that matches the shape of the power controller housing. After the mold is closed, the relative position of the moving platen 3 and the fixed platen 2 is locked by the mold locking mechanism (not shown) to ensure that there is no gap in the cavity during the injection molding process and to prevent the leakage of molten material.

[0030] In the injection molding stage, molten shell material (such as engineering plastic) is injected into the closed cavity through the gate by the injection molding machine until the material fills every corner of the cavity, including the shell body and the mounting feet. The injection pressure is maintained for a set time (determined according to the material characteristics and shell thickness) until the material in the cavity cools and solidifies, forming a complete power controller shell blank.

[0031] During the mold opening operation, the mold locking mechanism is released, and the moving template 3 is controlled to move vertically upward along the guide mechanism to separate from the fixed template 2 until the distance between the two is greater than the height of the shell, ensuring that the shell is fully exposed and there is no interference.

[0032] After the mold is opened, due to the adhesion between the shell and the cavity of the fixed template 2, the shell blank temporarily stays on the cavity surface of the fixed template 2. At this time, the top of the center ejector 5 contacts the bottom center of the shell, and the pad 15 on the top of the side ejector 13 fits against the bottom of the shell mounting foot.

[0033] During synchronous demolding, the drive motor is started, and the motor output drives the active screw 6 to rotate. The active screw 6 drives the central ejector rod 5 to move vertically upward through the threaded transmission. At the same time, the first bevel gear 7 on the active screw 6 rotates synchronously, driving the second bevel gear 8 meshing with it to rotate. The second bevel gear 8 drives the third bevel gear 10 to rotate synchronously through the transmission shaft 9. The third bevel gear 10 drives the fourth bevel gear 11 meshing with it to rotate. Since the parameters of the first bevel gear 7 and the fourth bevel gear 11 are the same, and the parameters of the second bevel gear 8 and the third bevel gear 10 are the same, the transmission ratio is always 1:1. Therefore, the driven screw 12 rotates synchronously and at the same speed as the active screw 6. The driven screw 12 then drives the side ejector rod 13 to move vertically upward through the threaded transmission, and the lifting speed and stroke of the side ejector rod 13 are completely consistent with those of the central ejector rod 5.

[0034] The central push rod 5 pushes the main body of the shell upwards, and the side push rod 13 pushes the shell mounting feet upwards through the pad block 15, so that the entire shell is simultaneously separated from the cavity of the fixed template 2, and the demolding is completed.

[0035] Once the shell is ejected to the set height, the motor is turned off, the ejector rod stops moving, and the demolded shell is removed manually or by a robotic arm.

[0036] During the reset operation, the start motor reverses, and the motor output drives the active screw 6 to rotate in the opposite direction. Through the gear linkage and thread transmission mentioned above, the central ejector rod 5 and the side ejector rod 13 move vertically downwards synchronously until they return to the initial low position. Their top ends are flush with the bottom surface of the cavity of the fixed template 2. The motor is then turned off, completing one molding cycle and waiting for the next mold closing operation.

[0037] During operation, it is necessary to ensure that the motor speed is stable (preferably a servo motor closed-loop control system); regularly check the meshing clearance of the first bevel gear 7, the second bevel gear 8, the third bevel gear 10, and the fourth bevel gear 11, as well as the lubrication status of the center hole 4 and the side hole 14.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power controller housing mold for engineering machinery, comprising a mold base (1), a fixed template (2), and a movable template (3), characterized in that: The fixed template (2) has a vertically arranged central hole (4) at its center position. A central push rod (5) that can move up and down is installed in the central hole (4). The fixed template (2) has multiple side holes (14) arranged in an array around the central hole (4). Each side hole (14) is equipped with a side push rod (13) that can move up and down. The central push rod (5) and the side push rod (13) move through a threaded drive and move up and down synchronously through gear linkage.

2. The power controller housing mold for engineering machinery according to claim 1, characterized in that, The surface of the mold base (1) is rotatably connected to a vertically arranged active screw (6). The active screw (6) is coaxial with the central push rod (5), and the active screw (6) moves through the mold base (1) and is threadedly connected to the central push rod (5).

3. The power controller housing mold for engineering machinery according to claim 2, characterized in that, The surface of the mold base (1) is rotatably connected with a plurality of vertically arranged driven screws (12), and the number of driven screws (12) corresponds one-to-one with the side push rods (13). After the top of each driven screw (12) moves through the mold base (1), it is coaxially threadedly connected with the corresponding side push rod (13).

4. The power controller housing mold for engineering machinery according to claim 3, characterized in that, The surface of the driving screw (6) is coaxially fixedly connected to a first bevel gear (7), and the surface of each driven screw (12) is coaxially fixedly connected to a fourth bevel gear (11). Each fourth bevel gear (11) rotates synchronously and at the same speed as the first bevel gear (7) through a transmission assembly.

5. The power controller housing mold for engineering machinery according to claim 4, characterized in that, The transmission assembly includes a second bevel gear (8), a transmission shaft (9) and a third bevel gear (10). The second bevel gear (8) is coaxially fixedly connected to one end of the transmission shaft (9) and meshes with the first bevel gear (7). The third bevel gear (10) is coaxially fixedly connected to the other end of the transmission shaft (9) and meshes with the fourth bevel gear (11).

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