Automatic falling-off mechanism for automobile expansion kettle mold

Abstract

The utility model discloses an automatic falling-off mechanism for an automobile expansion kettle mold, which belongs to the field of automobile manufacturing and comprises an injection mold, a side hole falling-off mechanism is arranged on one side of the injection mold, the injection mold comprises a fixed mold plate and a movable mold plate, and the fixed mold plate is connected with the movable mold plate through a shaft sleeve structure. Compared with the prior art, the external thread machining mold has the advantages that the connection between the half nuts and the external thread of the injection molding part is controlled through the rotation of the straight ruler strip and the gear, the half nuts are separated from the external thread of the injection molding part by translating the half nuts, and after demolding is completed, the gear is reversed through extrusion of the pressing plate, and the two half nuts are recombined into the external thread machining mold.

Description

Technical Field

[0001] The utility model relates to the field of automobile manufacturing, in particular to an automatic shedding mechanism for an automobile expansion kettle mould. Background Art

[0002] During the automobile manufacturing process, in order to ensure the normal operation of the engine, its coolant needs to be continuously cooled. Therefore, an expansion kettle needs to be added to the coolant circulation system to provide an area for the coolant to dissipate heat. Existing expansion kettles are mostly made of plastic, so the expansion kettles are mostly made by injection molding.

[0003] Most of the existing expansion kettle injection molds use a common injection mold consisting of a fixed platen and a movable platen connected by a sleeve structure to process the shape, and the side holes are made by a side hole falling-off mechanism.

[0004] Existing injection molds usually use an external motor thread sleeve mechanism to process external threads. During operation, this processing method is extremely difficult to control the rotation amount of the motor, and multiple steps are required for demolding, which greatly increases the difficulty of mold processing. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the automatic falling-off mechanism of the existing automobile expansion kettle mould cannot be quickly and automatically demoulded in a single step.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: an automatic falling-off mechanism for an automobile expansion kettle mold, comprising an injection mold, a side hole falling-off mechanism being provided on one side of the injection mold, the injection mold comprising a fixed template and a movable template, the fixed template and the movable template being connected by a sleeve structure, an external thread falling-off mechanism being provided inside the movable template on both sides of the external thread, the external thread falling-off mechanism comprising a half nut located on the side of the external thread, a screw located on one side of the outer wall of the half nut, a gear corresponding to the screw, and a ruler bar meshing with the gear, the screw passing through the center of the gear, and a spring being provided at the outer wall end of the ruler bar.

[0007] As an improvement, the ruler bar passes through the movable platen, and a baffle for limiting the position of the spring is provided on one side of the ruler bar.

[0008] As an improvement, a pressure plate for pressing the ruler strip is provided above the movable template.

[0009] As an improvement, the outlet of the outer sleeve end of the sleeve structure is a T-shaped outlet, and the movable template is slidably connected to the sleeve structure through body contact.

[0010] As an improvement, the half nut is connected to the screw rod by welding.

[0011] As an improvement, the screw is connected to the center hole of the gear through a thread.

[0012] The advantages of the utility model over the prior art are that the device controls the connection between the half nut and the external thread of the injection molded part by rotating the ruler bar and the gear, separates the half nut from the external thread of the injection molded part by translating the half nut, and after demoulding is completed, the gear is reversed by squeezing the pressure plate, and the two half nuts are reassembled into an external thread processing mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a general structural diagram of an automatic shedding mechanism for an automobile expansion kettle mould.

[0014] Figure 2 The utility model is a sectional view of the overall structure of an automatic shedding mechanism for an automobile expansion kettle mould.

[0015] Figure 3 The utility model is a structural diagram of an external thread shedding mechanism of an automatic shedding mechanism for an automobile expansion kettle mold.

[0016] Figure 4 The utility model is a cross-sectional view of a movable platen of an automatic shedding mechanism for an automobile expansion kettle mould.

[0017] As shown in the figure: 1. Injection mold; 11. Side hole falling-off mechanism; 12. Fixed platen; 13. Moving platen; 14. Bushing structure; 2. External thread falling-off mechanism; 21. Half nut; 22. Screw; 23. Gear; 24. Ruler bar; 25. Spring; 26. Baffle; 27. Pressure plate. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] As the instruction manual Figure 1 、 2 As shown in Figures 3 and 4, an automatic falling-off mechanism for an automobile expansion kettle mold comprises an injection mold 1. A side hole falling-off mechanism 11 is provided on one side of the injection mold 1, and the side hole of the injection part is processed by the side hole falling-off mechanism 11.

[0020] The injection mold 1 includes a fixed mold plate 12 and a movable mold plate 13. The fixed mold plate 12 and the movable mold plate 13 are connected by a sleeve structure 14. The movable mold plate 13 moves in a plane around the sleeve structure 14, so that the mold can be normally taken and placed.

[0021] The movable template 13 is internally provided with an external thread falling mechanism 2 located on both sides of the external thread, and the external thread falling mechanism 2 includes a half nut 21 located on the side of the external thread, a screw 22 located on one side of the outer wall of the half nut 21, a gear 23 corresponding to the screw 22, and a ruler bar 24 meshing with the gear 23. The screw 22 passes through the center of the gear 23, and the half nut 21 is connected to the screw 22 by welding. The screw 22 is connected to the center hole of the gear 23 through a thread. Through the rotation of the gear 23, the screw 22 can move in a plane in the internal hole of the movable template 13, so that the two opposite half nuts 21 can be freely separated. Through the meshing of the ruler bar 24 and the gear 23, when the ruler bar 24 moves up and down, the gear 23 can rotate around the center of the circle, providing power for the translation of the screw 22.

[0022] A spring 25 is provided at the outer wall end of the ruler bar 24, and the ruler bar 24 passes through the movable template 13. A baffle 26 is provided on one side of the ruler bar 24 to limit the position of the spring 25. A pressure plate 27 is provided above the movable template 13 to press the ruler bar 24. The outer sleeve end outlet of the shaft sleeve structure 14 is a T-shaped opening. The movable template 13 is slidably connected with the shaft sleeve structure 14 through body contact, and the spring 25 is fixed above the movable template 13 and between the baffle 26 through the baffle 26, so that after the pressure plate 27 is separated from the baffle 26, the ruler bar 24 can move upward under the action of the spring 25, thereby driving the closure of the two half nuts 21, and the outer sleeve end outlet of the shaft sleeve structure 14 is a T-shaped opening, so that the demoulding of the movable template 13 will not be affected, and normal demoulding can be completed.

[0023] During the specific implementation of the present invention, the fixed template 12 and the movable template 13 are closed, and at this time the pressure plate 27 presses the baffle 26 downward, causing the ruler bar 24 and the gear 23 to reverse, so that the screw 22 is pushed inward, so that the two half nuts 21 are combined into an external thread processing mold; the injection molding machine is started, and after the injection molding is completed, the side hole falling-off mechanism 11 is started to complete the side hole demoulding, and the movable template 13 moves up, so that the pressure plate 27 is separated from the baffle 26, so that the ruler bar 24 moves up under the action of the spring 25, so that the ruler bar 24 and the gear 23 rotate forward, so that the screw 22 drives the half nuts 21 to move outward, ensuring that the half nuts 21 will not affect the taking and placing of the external thread, and then the above operations are repeated for batch processing.

[0024] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. An automatic shedding mechanism for an automobile expansion kettle mold, comprising an injection mold (1), wherein a side hole shedding mechanism (11) is provided on one side of the injection mold (1), the injection mold (1) comprising a fixed plate (12) and a movable plate (13), wherein the fixed plate (12) and the movable plate (13) are connected via a shaft sleeve structure (14), and characterized in that: An external thread falling-off mechanism (2) is provided inside the movable plate (13) and is located on both sides of the external thread. The external thread falling-off mechanism (2) comprises a half nut (21) located on the side of the external thread, a screw (22) located on one side of the outer wall of the half nut (21), a gear (23) corresponding to the screw (22), and a ruler bar (24) meshed with the gear (23). The screw (22) passes through the center of the gear (23), and a spring (25) is provided at the outer wall end of the ruler bar (24).

2. The automatic shedding mechanism for an automobile expansion kettle mold according to claim 1, characterized in that: The ruler bar (24) passes through the movable plate (13), and a baffle (26) for limiting the position of the spring (25) is provided on one side of the ruler bar (24).

3. The automatic shedding mechanism for the automotive expansion kettle mold according to claim 2, characterized in that: A pressing plate (27) for pressing the moving ruler strip (24) is provided above the moving plate (13).

4. The automatic shedding mechanism for an automobile expansion kettle mold according to claim 1, characterized in that: The outer sleeve end outlet of the shaft sleeve structure (14) is a T-shaped opening, and the movable plate (13) is slidably connected to the shaft sleeve structure (14) through body contact.

5. The automatic shedding mechanism for the automotive expansion kettle mold according to claim 1, characterized in that: The half nut (21) and the screw (22) are connected by welding.

6. The automatic shedding mechanism for an automobile expansion kettle mold according to claim 1, characterized in that: The screw (22) is connected to the center hole of the gear (23) via a thread.

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