Demoulding structure of differential pressure mould

Abstract

The utility model discloses a differential pressure mold demolding structure which comprises a lower pedestal, a demolding ejector rod arranged corresponding to a differential pressure mold is connected to the lower pedestal in a lifting mode, a guide column is arranged on the lower pedestal, a guide hole is formed in an upper platen, and the guide hole is in axial sliding fit with the guide column. And the demolding ejector rod is connected to the upper table plate. According to the utility model, the demoulding ejector rod can synchronously lift with the upper bedplate, and can be actively recycled after the ejection operation is completed, so that the problem that the product casting quality is influenced as the demoulding ejector rod cannot be automatically recycled in the traditional demoulding structure is solved; the demolding ejector rod is fixedly connected with the upper table plate through the ejector plate, when hubs of different wheel types are produced, demolding operation of different differential pressure molds can be completed by replacing the corresponding ejector plate, so that the mold has certain universality, and the tool manufacturing cost is saved; the ejector rod plate and the ejector plate are arranged in a split mode, disassembly and maintenance of the demolding ejector rod are facilitated, daily maintenance is further facilitated, and the equipment maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub differential pressure casting, in particular to a differential pressure mold demoulding structure. Background Art

[0002] After the casting of the aluminum alloy wheel hub is completed, the differential pressure mold is demolded, and the wheel hub blank needs to go through a demolding process to separate the wheel hub blank from the mold. During the demolding process, the ejector rod extends to eject the wheel hub blank, causing the product to fall. The ejector rod in the existing differential pressure mold demolding structure does not have an automatic recovery function after performing the ejection action. It can only wait until the next mold closing process, when the return column and the stop column contact, and then the ejector rod is passively retracted. In actual production, the return column and the stop column often have abnormal problems such as aluminum sticking, which can easily lead to the ejector rod not being able to be recovered in place, and the ejector rod position will have problems such as bulges or depressions, affecting the casting quality of the product. In addition, the above-mentioned ejector rod recovery method is slow and cannot achieve early return, resulting in a delay in the ejector rod return action, which can easily lead to aluminum sticking to the ejector rod.

[0003] Based on this, developing a new differential pressure mold demoulding structure for application in actual production is an urgent problem to be solved. Utility Model Content

[0004] The purpose of the utility model is to provide a differential pressure mold demoulding structure to solve the problem that the existing differential pressure mold demoulding structure does not have the function of automatic ejector pin recovery, which easily leads to the ejector pin not being fully recovered and affecting the casting quality of the product, and at the same time solves the problem that the existing ejector pin recovery action is delayed, causing the ejector pin to stick to aluminum.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A differential pressure mold demoulding structure comprises a lower pedestal, on which a demoulding ejector rod corresponding to the differential pressure mold is connected for lifting and lowering, a guide column is arranged on the lower pedestal, a guide hole is opened on the upper platen, the guide hole and the guide column are axially slidably matched, and the demoulding ejector rod is connected to the upper platen.

[0007] Preferably, the demoulding ejector rod is connected and fixed to the upper platen through the top plate, the demoulding ejector rod is connected to the top plate, and the top plate is connected to the upper platen.

[0008] Preferably, the top plate is detachably connected to the upper plate via connecting pillars, the top end of the connecting pillars is provided with an annular groove for locking the supporting pillars, the bottom end of the connecting pillars is provided with a connecting seat connected to the top plate, and connecting holes are provided on the upper plate corresponding to the connecting pillars.

[0009] Preferably, a locking plate is inserted into the connecting hole of the upper platform, and a locking notch is provided on the locking plate corresponding to the annular groove of the connecting pillar, and the locking notch is plugged and matched with the annular groove.

[0010] Preferably, the demoulding ejector pin is connected and fixed to the top plate via a ejector plate, the demoulding ejector pin is connected to the ejector plate, and the ejector plate is connected to the top plate.

[0011] Preferably, the upper platform is connected to a power device, and the power device is a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

[0012] The beneficial effects of the utility model are:

[0013] The utility model connects the demoulding ejector rod to the upper table plate of the sliding matching guide column, so that the demoulding ejector rod can be synchronously lifted and lowered with the upper table plate, and can be actively recovered after the ejection operation is completed, thereby avoiding the problem that the demoulding ejector rod cannot be automatically recovered in the traditional demoulding structure, which affects the casting quality of the product; the demoulding ejector rod is connected and fixed to the upper table plate through the top plate, and when producing wheel hubs of different wheel types, the demoulding operation of different differential pressure molds can be completed by replacing the corresponding top plates, so that the utility model has a certain versatility and saves the tooling production cost; the demoulding ejector rod is connected and fixed to the top plate through the ejector plate, and the ejector plate and the top plate are separated, which facilitates the disassembly and maintenance of the demoulding ejector rod. When the demoulding ejector rod needs to be repaired and replaced, the spare parts can be replaced by quickly disassembling the ejector plate, eliminating the trouble of disassembling the top plate or the upper table plate, further facilitating daily maintenance and improving the equipment maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the middle and upper platform, top plate and top rod plate.

[0017] Figure 3 Schematic diagram of the connection structure between the support pillar and the locking plate.

[0018] Figure 4 A schematic diagram of the structure of the connecting pillars.

[0019] Figure 5 Schematic diagram of the locking plate.

[0020] In the figure: 1--lower base; 2--mold ejector pin; 21--top plate; 22--ejector plate; 3--guide column; 4--upper plate; 41--guide hole; 42--connecting hole; 5--connecting support column; 51--annular groove; 52--connecting seat; 6--locking plate; 61--locking notch; 7--power device. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] like Figure 1-5 As shown, a differential pressure mold demoulding structure includes a lower pedestal 1, and a demoulding ejector rod 2 is connected to the lower pedestal 1 for lifting. The demoulding ejector rod 2 is arranged corresponding to the differential pressure mold and is used to eject the wheel hub blank after casting. Specifically, a guide column 3 is arranged on the lower pedestal 1, and a guide hole 41 is opened on the upper platen 4. The guide hole 41 is axially slidably matched with the guide column 3, and the demoulding ejector rod 2 is connected to the upper platen 4. The lifting action of the upper platen 4 on the guide column 3 drives the demoulding ejector rod 2 to form an ejection and recovery action on the mold.

[0023] When in use, the upper platen 4 moves downward along the guide column 3, driving the demoulding ejector 2 to move downward synchronously, and performing the ejection operation on the wheel hub blank. After completing the ejection and demoulding operation, the upper platen 4 moves upward along the guide column 3, driving the demoulding ejector 2 to move upward synchronously, disengaging from the differential pressure mold, and completing the recovery of the demoulding ejector 2. In this embodiment, by connecting the demoulding ejector 2 to the upper platen 4 that slides with the guide column 3, the demoulding ejector 2 can be raised and lowered synchronously with the upper platen 4, and can be actively recovered after completing the ejection operation, thereby avoiding the problem in the traditional demoulding structure that the demoulding ejector 2 cannot be automatically recovered, affecting the casting quality of the product. Preferably, the upper platen 4 is connected to the power device 7, and the power device 7 can use existing power configurations such as cylinders, hydraulic cylinders or electric push rods to achieve lifting and lowering actions.

[0024] In a further embodiment, the demoulding ejector pin 2 is connected and fixed to the upper platen 4 through the top plate 21, the demoulding ejector pin 2 is connected to the top plate 21, and the top plate 21 is connected to the upper platen 4. In this embodiment, the top plate 21 and the upper platen 4 are separately arranged, which is convenient for the separate production and maintenance of the top plate 21 and the demoulding ejector pin 2. When the demoulding ejector pin 2 is damaged, it can be disassembled and replaced separately, which improves the maintenance efficiency. At the same time, corresponding to differential pressure casting molds of different wheel types, this embodiment can complete the demoulding operation of different differential pressure molds by replacing the corresponding top plate 21, so that the utility model has a certain versatility and saves the tooling production cost.

[0025] Preferably, if Figure 2-4As shown, the top plate 21 is detachably connected to the upper plate 4 through the connecting pillar 5, which facilitates the disassembly of the top plate 21. Specifically, the top of the connecting pillar 5 is provided with an annular groove 51 for locking the support pillar, and the bottom of the connecting pillar 5 is provided with a connecting seat 52 for connecting the top plate 21, and the upper plate 4 is provided with a connecting hole 42 corresponding to the connecting pillar 5. During installation, the top of the connecting pillar 5 is inserted into the connecting hole 42, and the connecting seat 52 is connected to the top plate 21 by bolts to complete the connection and fixation of the top plate 21 and the upper plate 4. In order to facilitate the quick disassembly of the top plate 21, a locking plate 6 is inserted into the connecting hole 42 of the upper plate 4, and a locking notch 61 is provided on the locking plate 6 corresponding to the annular groove 51 of the connecting pillar 5, and the locking notch 61 is plugged and matched with the annular groove 51. During installation, the locking plate 6 slides radially in the connecting hole 42, so that the locking notch 61 is plugged into the locking groove of the connecting pillar 5, thereby realizing the locking of the connecting pillar 5. When the top plate 21 needs to be disassembled, the locking plate 6 is pulled out from the connecting hole 42 of the upper platform 4 to release the lock of the connecting support 5 , thereby realizing quick disassembly of the top plate 21 .

[0026] Furthermore, if Figure 2 As shown, the demoulding ejector pin 2 is connected and fixed to the top plate 21 through the ejector plate 22. Specifically, the demoulding ejector pin 2 is connected to the ejector plate 22, and the ejector plate 22 is connected to the top plate 21. In this embodiment, the ejector plate 22 and the top plate 21 are separately arranged, which further facilitates the disassembly and maintenance of the demoulding ejector pin 2. When the demoulding ejector pin 2 needs to be repaired and replaced, the spare parts can be replaced by disassembling the ejector plate 22, eliminating the trouble of disassembling the top plate 21 or the upper plate 4, further facilitating daily maintenance and improving the equipment maintenance efficiency.

[0027] The above disclosure is only a specific embodiment of the present patent, but the present patent is not limited thereto. For ordinary technicians in this field, without departing from the principle of the present invention, the deformation made should be deemed to belong to the protection of the present invention.

Claims

1. A differential pressure mold demoulding structure, characterized in that: The present invention comprises a lower pedestal (1), to which a demoulding ejector rod (2) corresponding to the differential pressure mold is connected for lifting and lowering, a guide column (3) is provided on the lower pedestal (1), a guide hole (41) is provided on the upper platen (4), the guide hole (41) and the guide column (3) are axially slidably matched, and the demoulding ejector rod (2) is connected to the upper platen (4).

2. A differential pressure mold demoulding structure according to claim 1, characterized in that: The demoulding ejector rod (2) is connected and fixed to the upper platform (4) via the top plate (21); the demoulding ejector rod (2) is connected to the top plate (21), and the top plate (21) is connected to the upper platform (4).

3. A differential pressure mold demoulding structure according to claim 2, characterized in that: The top plate (21) is detachably connected to the upper platform (4) via a connecting pillar (5); an annular groove (51) for locking a supporting pillar is provided at the top end of the connecting pillar (5); a connecting seat (52) for connecting the top plate (21) is provided at the bottom end of the connecting pillar (5); and a connecting hole (42) is provided on the upper platform (4) corresponding to the connecting pillar (5).

4. A differential pressure mold demoulding structure according to claim 3, characterized in that: A locking plate (6) is inserted into the connection hole (42) of the upper platform (4), and a locking notch (61) is provided on the locking plate (6) corresponding to the annular groove (51) of the connecting support (5), and the locking notch (61) is plugged into and matched with the annular groove (51).

5. The differential pressure mold demoulding structure according to claim 2, characterized in that: The demoulding ejector pin (2) is connected and fixed to the top plate (21) via a ejector plate (22); the demoulding ejector pin (2) is connected to the ejector plate (22), and the ejector plate (22) is connected to the top plate (21).

6. The differential pressure mold demoulding structure according to claim 1, characterized in that: The upper platform (4) is connected to a power device (7), and the power device (7) is selected from a cylinder, a hydraulic cylinder or an electric push rod.

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