Mower plastic part injection molding device

Abstract

The utility model discloses an injection molding device for a plastic part of a hay mower, and aims to solve the problem that the discharging efficiency after the plastic part is molded is influenced as a molded plastic part can be separated from a lower mold only by exerting force by a worker. According to the technical scheme, the mower plastic part injection molding device is characterized by comprising a workbench and a plurality of forming molds arranged on the workbench; each forming mold comprises a forming frame arranged on the workbench, a pushing plate connected into the forming frame in a sliding mode and a pushing piece used for driving the pushing plate to move in the direction of an opening formed in the forming frame. The pushing piece comprises a pushing rod, a moving block fixedly connected to the pushing rod, a lead screw arranged in the moving block in a penetrating mode and a driving piece used for driving the lead screw to rotate in the moving block. According to the plastic part injection molding device for the mower, the molded plastic part can be conveniently separated from the molding mold, so that the molding and discharging efficiency of the plastic part is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts molding technology for lawnmowers, and more specifically, it relates to an injection molding device for plastic parts of lawnmowers. Background Technology

[0002] A lawnmower, also known as a lawn trimmer, is a mechanical tool used for mowing lawns, vegetation, etc. It consists of a blade disc, engine, wheels, drive mechanism, blades, handle, and control unit. The various plastic parts of a lawnmower are manufactured using injection molding equipment and are all made with fixed molds.

[0003] An injection molding machine, also known as an injection molding machine or injection molding machine, is a primary molding device that uses plastic molding equipment to produce various shapes of plastic products from thermoplastic or thermosetting plastics. Existing injection molding equipment typically includes upper and lower molds. The upper mold has an injection channel, through which molten plastic is injected into the lower mold. After the plastic cools, it is molded into shape.

[0004] However, the molding equipment currently in use does not have an auxiliary material handling device. After the plastic is molded inside the lower mold, it needs to be manually removed from the lower mold, which increases the burden on the workers. At the same time, it requires the workers to exert force to separate the molded plastic parts from the lower mold, which affects the efficiency of the plastic parts being discharged after molding. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a plastic injection molding device for lawnmowers, which can facilitate the separation of the molded plastic parts from the molding mold, thereby improving the efficiency of plastic part molding and discharge.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a plastic injection molding device for lawnmowers, comprising a worktable and a plurality of molding molds disposed on the worktable. Each of the plurality of molding molds comprises a molding frame disposed on the worktable, a push plate slidably connected within the molding frame, and a pusher for driving the push plate to move toward an opening in the molding frame. The pusher comprises a push rod, a moving block fixedly connected to the push rod, a lead screw passing through the moving block, and a drive for driving the lead screw to rotate within the moving block. The moving block has a threaded groove inside for the lead screw to rotate.

[0007] By adopting the above technical solution, several molding dies are arranged in an array on the worktable. These are molding dies formed by injection molding through a molding device. The molding dies are set in correspondence with the molding device. After the plastic parts of the lawnmower are formed and cooled in the molding dies, they need to be removed from the molding dies. At this time, the operator needs to start the drive component to drive the lead screw to rotate. The lead screw rotates in the threaded groove of the moving block, and the moving block moves along the outer wall of the lead screw with the cooperation of the lead screw and the nut seat. It moves along the outer wall of the lead screw towards the opening of the molding frame. As the moving block moves, the push rod on the moving block pushes the push plate, so that the push plate moves along the inner wall of the molding frame. With the continuous drive of the drive component, the moving block drives the push rod to move and push continuously until the push plate pushes the molded plastic parts of the lawnmower out of the molding frame. After that, the drive component is no longer started, thus realizing the rapid separation of the plastic parts and improving the output efficiency of the plastic parts.

[0008] The present invention is further configured such that: the driving component includes a first bevel gear fixedly connected to the lead screw, a second bevel gear rotatably connected to the worktable, and a rotating component for driving the second bevel gear to rotate, wherein the first bevel gear and the second bevel gear mesh with each other.

[0009] By adopting the above technical solution, the operator drives the second bevel gear to rotate on the worktable through the action of the rotating component. As the second bevel gear rotates, it drives the first bevel gear that meshes with it to rotate as well. This, in turn, drives the lead screw on the first bevel gear to rotate and rotate in the threaded groove opened in the moving block. This enables the moving block to drive the push rod to push the push plate to move along the opening direction set in the forming frame.

[0010] The present invention is further configured such that the rotating component includes a rotating rod fixedly connected to the second bevel gear.

[0011] By adopting the above technical solution, when the pusher is activated in the molding die, the operator needs to drive the rotation of the extended rotating rod to drive the rotation of the second bevel gear, which in turn drives the first bevel gear and the lead screw on the first bevel gear to rotate, thus achieving the movement of the driven component. Furthermore, manual control can improve the efficiency and accuracy of the pusher and the moving block.

[0012] The present invention is further configured such that: a rotating disk is fixedly connected to the rotating rod, and the diameter of the rotating disk is larger than the diameter of the second bevel gear.

[0013] By adopting the above technical solution, the staff can drive the rotating rod to rotate through the action of the rotating disk, which can reduce the force required for the staff to directly drive the rotating rod to rotate, and can ensure the stability of the rotating disk when it is driven to rotate.

[0014] The present invention is further configured such that: the rotating component includes a motor mounted on the workbench, and the output shaft of the motor is fixed to the center of the second bevel gear.

[0015] By adopting the above technical solution, the staff can drive the motor to rotate the second bevel gear, which is more efficient than manually driving the second bevel gear and will not increase the workload of the staff.

[0016] The present invention is further configured such that the motor is electrically connected to a reversing switch.

[0017] By adopting the above technical solution, the forward and reverse switch can control the forward and reverse rotation of the motor's output shaft, which in turn can control the clockwise and counterclockwise rotation of the lead screw connected to the motor. This, in turn, can drive the moving block to move back and forth, so that the moving block can not only push out the molded plastic part, but also adjust the direction of the lead screw by pressing the forward and reverse switch, thereby driving the moving block to the initial position.

[0018] The present invention is further configured such that: the push rod is provided in two sets and is symmetrically fixedly connected to both ends of the moving block.

[0019] By adopting the above technical solution, the stability of the moving block can be improved by the action of two sets of push rods during the movement process, while ensuring the force of the moving block when it is pushed and the supporting force of the push rods.

[0020] In summary, this utility model has the following beneficial effects: under the action of the pusher and the molding frame, the molded plastic parts can be easily separated from the molding mold, thereby improving the efficiency of plastic part molding and unloading. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model, mainly used to show the structural and positional relationship between the forming frame and the pusher on the worktable;

[0022] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention, mainly used to show the structure and positional relationship of the forming frame and the pusher on the worktable.

[0023] In the diagram: 1. Workbench; 2. Forming frame; 3. Push plate; 4. Push rod; 5. Moving block; 6. Rotating rod; 7. Rotating disk; 8. Second bevel gear; 9. First bevel gear; 10. Lead screw; 11. Motor. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] A lawnmower plastic parts injection molding device, as described in the reference Figures 1-2 The system includes a workbench 1 and several molding dies set on the workbench 1. Each molding die includes a molding frame 2 set on the workbench 1, a push plate 3 slidably connected in the molding frame 2, and a pusher for driving the push plate 3 to move in the direction of the opening in the molding frame 2. The pusher includes a push rod 4, a moving block 5 fixedly connected to the push rod 4, a lead screw 10 passing through the moving block 5, and a drive for driving the lead screw 10 to rotate in the moving block 5. The moving block 5 has a threaded groove for the lead screw 10 to rotate inside. The push rod 4 is provided in two sets and is symmetrically fixedly connected to both ends of the moving block 5.

[0029] The driving component includes a first bevel gear 9 fixedly connected to the lead screw 10, a second bevel gear 8 rotatably connected to the worktable 1, and a rotating component for driving the second bevel gear 8 to rotate. The first bevel gear 9 and the second bevel gear 8 mesh with each other.

[0030] Embodiment 1 of the rotating component: The rotating component includes a rotating rod 6 fixedly connected to the second bevel gear 8, and a rotating disk 7 fixedly connected to the rotating rod 6. The diameter of the rotating disk 7 is larger than the diameter of the second bevel gear 8.

[0031] Working principle: Several molding dies are arranged in an array on the workbench 1. These are molding dies formed by injection molding through a molding device. The molding dies are set in correspondence with the molding device so that after the plastic parts of the lawnmower are formed and cooled, they need to be removed from the molding dies. At this time, the operator needs to start the drive component to drive the lead screw 10 to rotate. The lead screw rotates in the threaded groove of the moving block 5, and the moving block 5 moves along the outer wall of the lead screw with the cooperation of the lead screw and the nut seat. It moves along the outer wall of the lead screw towards the opening of the molding frame 2. As the moving block 5 moves, the push rod 4 on the moving block 5 pushes the push plate 3, so that the push plate 3 moves along the inner wall of the molding frame 2. With the continuous drive of the drive component, the moving block 5 drives the push rod 4 to move and push continuously until the push plate 3 pushes the molded plastic parts of the lawnmower out of the molding frame 2. After that, the drive component is no longer started, thus realizing the rapid separation of the plastic parts and improving the output efficiency of the plastic parts.

[0032] The operator uses the rotating component to drive the second bevel gear 8 to rotate on the worktable 1. As the second bevel gear 8 rotates, it drives the first bevel gear 9, which meshes with it, to rotate. This causes the lead screw on the first bevel gear 9 to rotate and rotate in the threaded groove of the moving block 5. This allows the moving block 5 to drive the push rod 4 to push the push plate 3 to move along the opening direction of the forming frame 2.

[0033] When the ejector component inside the mold is activated, the operator needs to rotate the extended rotating rod 6 to drive the second bevel gear 8 to rotate, which in turn drives the first bevel gear 9 and the lead screw 10 on the first bevel gear 9 to rotate, thus achieving the movement. Manual control can improve the efficiency and accuracy of the movement of the ejector rod 4 and the moving block 5. At the same time, the operator can drive the rotating rod 6 to rotate through the rotating disk 7, which reduces the force required to directly drive the rotating rod 6 and ensures the stability of the rotating disk 7.

[0034] Embodiment 2 of the rotating component: Compared with Embodiment 1, Embodiment 2 is different in that the rotating component includes a motor 11 mounted on the workbench 1. The output shaft of the motor 11 is fixed to the center of the second bevel gear 8, and the motor 11 is electrically connected to a forward / reverse switch.

[0035] Working principle: The operator drives the motor 11 to rotate the second bevel gear 8, which is more efficient than manually driving the second bevel gear 8 and does not increase the workload of the operator.

[0036] The forward and reverse switch can control the forward and reverse rotation of the output shaft of motor 11, which in turn controls the clockwise and counterclockwise rotation of the lead screw 10 connected to motor 11. This, in turn, can drive the moving block 5 to move back and forth, so that the moving block 5 can not only push out the molded plastic part, but also adjust the direction of the lead screw by pressing the forward and reverse switch, thereby driving the moving block 5 to the initial position.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A plastic part injection molding device for lawn mower, comprising a workbench (1) and a plurality of molding molds arranged on the workbench (1), characterized in that: The forming die comprises a forming frame (2) arranged on a workbench (1), a push plate (3) slidingly connected in the forming frame (2), and a pushing piece for driving the push plate (3) to move towards the opening direction of the forming frame (2), wherein the pushing piece comprises a pushing rod (4), a moving block (5) fixedly connected on the pushing rod (4), a lead screw (10) penetrating in the moving block (5), and a driving piece for driving the lead screw (10) to rotate in the moving block (5), and the moving block (5) is internally provided with a threaded groove for the rotation of the lead screw (10).

2. The device for injection molding plastic parts of a lawnmower according to claim 1, characterized in that: The driving piece comprises a first bevel gear (9) fixedly connected on the lead screw (10), a second bevel gear (8) rotationally connected on the workbench (1), and a rotating piece for driving the second bevel gear (8) to rotate, and the first bevel gear (9) and the second bevel gear (8) are in mesh with each other.

3. The device for injection molding plastic parts of a lawnmower according to claim 2, characterized in that: The rotating piece comprises a rotating rod (6) fixedly connected on the second bevel gear (8).

4. The device for injection molding plastic parts of a lawnmower according to claim 3, characterized in that: The rotating rod (6) is fixedly connected with a rotating disc (7), and the diameter of the rotating disc (7) is greater than that of the second bevel gear (8).

5. The device for injection molding plastic parts of a lawnmower according to claim 2, characterized in that: The rotating piece comprises a motor (11) arranged on the workbench (1), and the output shaft of the motor (11) is fixedly connected with the center of the second bevel gear (8).

6. The device for injection molding plastic parts of a lawnmower according to claim 5, characterized in that: The motor (11) is electrically connected with a reverse switch.

7. The device for injection molding plastic parts of a lawnmower according to claim 1, characterized in that: The pushing rod (4) is arranged in two groups and symmetrically fixedly connected on the two ends of the moving block (5).

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