A mobile extrusion die carrier

Abstract

The present invention discloses a mobile extrusion die set, which includes an extrusion female die fixed on a lower template and an extrusion punch cooperating with the extrusion female die. Above the lower template, a calibration die is installed, which can press down the blank placed in the extrusion female die for calibration after being extruded by the extrusion punch. The calibration die is installed on a calibration die bracket that can move in the X and Z directions under drive. The calibration die bracket is vertically and slidably installed on the lower template. The calibration die is located above the extrusion female die and coaxially arranged in the initial position. A blank unloading mechanism capable of moving in the X direction is provided on the lower template. The present invention solves the technical problem that in the prior art, large-length backward extrusion parts cannot be extruded and formed on a conventional hydraulic press.

Description

Technical Field

[0001] The present invention relates to the technical field of die sets, and particularly to a movable extrusion die set. Background Art

[0002] For a reverse extrusion part with a very long length, such as 1000 mm long, as Figure 1 shown, the closed height of a conventional hydraulic press cannot achieve the extrusion of an ultra-long part, and the cost of customizing special equipment is very high. Summary of the Invention

[0003] The object of the present invention is to solve the above technical problems, and provide a movable extrusion die set. By using this movable extrusion die set, a conventional hydraulic press can be used to produce longer extrusion parts.

[0004] The technical solution adopted to achieve the object of the present invention is:

[0005] A movable extrusion die set includes an extrusion female die fixed on a lower template, an extrusion punch cooperating with the extrusion female die. Above the lower template, a calibration die is installed, which can press down the blank placed in the extrusion female die for calibration after being extruded by the extrusion punch. The calibration die is installed on a calibration die support that can move in the X and Z directions under drive. The calibration die support is vertically and slidably installed on the lower template. The calibration die is located above the extrusion female die and coaxially arranged in the initial position; a blank unloading mechanism capable of moving in the X direction is provided on the lower template.

[0006] Further technical improvement lies in that the calibration die support is connected to calibration hydraulic cylinders arranged in the X direction on the relative two sides of the extrusion female die, and is driven by the calibration hydraulic cylinders to move up and down in the Z direction; a sliding mounting frame arranged in the X direction for installing the calibration hydraulic cylinders is connected to a moving hydraulic cylinder arranged in the X direction. The moving hydraulic cylinder can drive the sliding mounting frame to move in the X direction on the lower template to drive the calibration hydraulic cylinders to move in the X direction.

[0007] Further technical improvement lies in that the blank unloading mechanism includes a blank unloading plate coaxially located directly above the calibration die and a blank unloading plate support rod capable of being driven to move in the X direction and supporting the blank unloading plate above the lower template.

[0008] Further technical improvement lies in that there are multiple blank unloading plate support rods, forming two groups, and are respectively arranged on the outer sides of the calibration hydraulic cylinders in the X direction.

[0009] Further technical improvement lies in that the bottom end of the blank unloading plate support rod forms a guiding portion, and a pair of oppositely arranged guiding grooves are formed on the lower template. The cross-sectional shape of the guiding groove is adapted to the shape of the guiding portion.

[0010] The present invention solves the technical problem that large-length backward extrusion parts in the prior art cannot be extruded and formed on a conventional hydraulic press by setting the calibration die to be movable in the X and Z directions and the unloading mechanism to be movable in the X direction. Through the movement of the calibration die and the unloading mechanism, the horizontal movement relative to the extrusion die cavity is achieved in the extrusion process, so that the extrusion die cavity is no longer restricted by the upper unloading plate and the calibration die during filling and part taking. Brief Description of the Drawings

[0011] Figure 1 is a schematic diagram of a backward extrusion part formed by the movable extrusion die set of the present invention;

[0012] Figure 2 is a front view structural schematic diagram of the movable extrusion die set of the present invention;

[0013] Figure 3 is a top view structural schematic diagram of the movable extrusion die set of the present invention;

[0014] Figures 4 - 8 is a working state schematic diagram of the movable extrusion die set of the present invention;

[0015] In the figures: 1. lower template; 2. extrusion die cavity; 3. calibration hydraulic cylinder; 4. calibration die support; 5. calibration die; 6. unloading plate support rod; 7. extrusion punch; 8. unloading hydraulic cylinder; 9. moving hydraulic cylinder; 10. unloading plate. Detailed Description of the Invention

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] As Figure 1 shown, the movable extrusion die set of the present invention includes an extrusion die cavity 2 fixed on a lower template 1 and an extrusion punch 7 cooperating with the extrusion die cavity. Above the lower template, a calibration die 5 is installed, which can press down the blank placed in the extrusion die cavity 2 for calibration after being extruded by the extrusion punch. The calibration die is installed on a calibration die support 4 that can be driven to move in the X and Z directions. The calibration die support is vertically and slidably installed on the lower template 1. The calibration die is located above the extrusion die cavity and coaxially arranged in the initial position. The lower template is provided with an unloading mechanism that can move in the X direction.

[0018] A further technical improvement is that the correction mold bracket is connected to the correction hydraulic cylinder 3 arranged along the X direction on the opposite sides of the extrusion die, and is driven by the correction hydraulic cylinder to move and lift in the Z direction; the sliding mounting frame arranged in the X direction on which the correction hydraulic cylinder 3 is installed is connected to the mobile hydraulic cylinder arranged in the X direction, and the mobile hydraulic cylinder can drive the sliding mounting frame to move in the X direction on the lower template to drive the correction hydraulic cylinder to move in the X direction.

[0019] Specifically, there are two correction hydraulic cylinders, or other numbers, such as four, with two arranged on each side, without limitation.

[0020] A further technical improvement is that the unloading mechanism includes a unloading plate 10 coaxially located just above the correction mold and a unloading plate support rod 6 that supports the unloading plate above the lower mold plate and is driven to move in the X direction.

[0021] It should be noted that the unloading plate is a conventional component, which is used to separate the extrusion punch from the formed reverse extrusion workpiece. When the extrusion punch returns, it will move up with the workpiece. Since the diameter of the unloading hole on the unloading plate is smaller than the diameter of the workpiece, the extrusion punch can pass through, but the workpiece cannot be allowed to pass through. This achieves the purpose of unloading. It is a conventional technology and will not be described in detail.

[0022] A further technical improvement is that the stripper plate support rods 6 are multiple, forming two groups, which are arranged on the outside of the correction hydraulic cylinder along the X direction. Specifically, each group has at least two, arranged at intervals.

[0023] A further technical improvement is that a guide portion is formed at the bottom end of the unloading plate support rod, and a pair of relatively arranged guide grooves (such as T-shaped grooves) are formed on the lower template, and the cross-sectional shape of the guide grooves is adapted to the shape of the guide portion.

[0024] Action flow:

[0025] The initial position is Figures 2 - 3 First, the hydraulic cylinder 9 is moved to push the correction die out of the range of the extrusion die 2, as shown in FIG. Figures 4 - 5 As shown. Put the hot blank into the extrusion die 2, move the hydraulic cylinder 9 to pull the correction die, and move it to the coaxial position of the extrusion die 2. The extrusion punch 7 moves downward and presses on the correction die 5, so that the blank is squeezed downward by about 50mm to correct the blank. At this time, the correction hydraulic cylinder is compressed, as shown in FIG. Figure 6 As shown. The extrusion punch 7 returns until it leaves the correction die 5, and the correction die 5 is lifted up by the correction hydraulic cylinder 3 at the same time. The mobile hydraulic cylinder 9 pushes the correction die 5 again and moves it out of the range of the extrusion die 2. Figure 7 As shown. The extrusion punch 7 moves downward to extrude the corrected blank. The extrusion is completed as shown. Figure 7As shown, the extrusion punch 7 returns, and the extruded part is separated from the extrusion punch 7 through the stripper plate 10. The extruded part falls into the extrusion die cavity. The stripper hydraulic cylinder 8 pushes the stripper plate 10 backward to move it out of the range of the extrusion die 2, as Figure 8 shown. The extruded part is taken out, a new blank is placed, and the next extrusion starts.

[0026] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements can be made without departing from the principle of the present invention, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A mobile extrusion die holder, comprising an extrusion female die fixed on a lower template and an extrusion punch cooperating with the extrusion female die, characterized in that, A correction die is installed above the lower template, which can press down the blank placed in the extrusion die for correction after being extruded by the extrusion punch. The correction die is installed on a correction die bracket that can be driven to move in X and Z directions. The correction die bracket can be slidably installed vertically on the lower template. In the initial position, the correction die is located above the extrusion die and is coaxially arranged; the lower template is provided with a discharge mechanism that can move in the X direction.

2. The movable extrusion die holder according to claim 1, wherein The correction mold bracket is connected to the correction hydraulic cylinders arranged along the X direction on the opposite sides of the extrusion die, and is driven by the correction hydraulic cylinders to move and lift in the Z direction; the sliding mounting frame arranged in the X direction on which the correction hydraulic cylinder is installed is connected to the mobile hydraulic cylinder arranged in the X direction, and the mobile hydraulic cylinder can drive the sliding mounting frame to move in the X direction on the lower template to drive the correction hydraulic cylinder to move in the X direction.

3. The movable extrusion die holder according to claim 1 or 2, characterized in that, The unloading mechanism comprises a unloading plate coaxially located just above the correction mold and a unloading plate support rod supporting the unloading plate above the lower mold plate and driven to move in the X direction.

4. The mobile extrusion die holder according to claim 3, characterized in that, The stripper plate support rods are multiple and form two groups, which are respectively arranged on the outside of the correction hydraulic cylinder along the X direction.

5. The movable extrusion die holder according to claim 4, wherein The bottom end of the stripper plate support rod forms a guide portion, and a pair of oppositely arranged guide grooves are formed on the lower template, and the cross-sectional shape of the guide grooves is adapted to the shape of the guide portion.

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