A casting wheel hub demolding device

Abstract

The utility model discloses a kind of casting hub demolding devices, upper die, lower die, side die form hub cavity between, side die can be demolded to horizontal direction, upper die can be close to or away from lower die, upper die includes die stem, lower die includes die table, die table is equipped with first passageway, die stem can pass through first passageway and be connected with movable frame, movable frame is connected with top rod, the upper end of top rod is resisted by hub, top rod passes through movable frame and is slidably connected with movable frame, fixed frame is located below movable frame, top rod is slidably connected with fixed frame, including first state, second state, third state, fourth state, upper die and lower die are closed in first state, upper die and hub are separated in second state, top rod lifts hub and is away from lower die in third state, die stem is separated from movable frame in fourth state, the utility model is separated from the mode of side die first, hub can be separated from lower die by the separation of upper die, prevent side die deformation, and cancel the ejection cylinder below using mould, with the advantage of energy saving.

Description

Technical Field

[0001] This utility model relates to the field of metal casting mold technology, and more specifically, to a casting wheel hub demolding device. Background Technology

[0002] In existing technology, motorcycle wheels are made by casting molten metal into a mold. The mold includes multiple side molds, an upper mold, and a lower mold. After being clamped by a cylinder, molten metal is poured in to form the wheel. Generally, after casting and cooling, the upper mold is opened first, then the side molds are pulled apart, and finally the wheel is ejected from the lower mold by a pushing cylinder located below the lower mold. However, this demolding method, which starts from the upper mold, can lead to deformation of the side molds after multiple demolding processes if the upper mold sticks to the wheel. This renders the side molds unusable. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art, prevent side mold deformation, and provide a casting wheel hub demolding device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a casting wheel hub demolding device, including an upper mold, a lower mold, a side mold, a movable frame, a fixed frame, and a push rod. A wheel hub cavity is formed between the upper mold, the lower mold, and the side mold. The side mold can be demolded in a horizontal direction. The upper mold can move closer to or further away from the lower mold. The upper mold includes a mold rod, and the lower mold includes a mold platform. The mold platform has a first channel. The mold rod can pass through the first channel and be connected to the movable frame. The movable frame is connected to a plurality of push rods. The upper end of the push rod abuts against the wheel hub. The push rod passes through the movable frame and is slidably connected to the movable frame. The fixed frame is located below the movable frame, and the push rod is slidably connected to the fixed frame.

[0006] The system includes a first state, a second state, a third state, and a fourth state. In the first state, the upper mold and the lower mold are closed. In the second state, the upper mold is separated from the wheel hub. In the third state, the push rod lifts the wheel hub away from the lower mold. In the fourth state, the mold rod is separated from the movable frame.

[0007] Furthermore, the mold table is provided with a first guide hole, and a first locking block is installed in the first guide hole. The first guide hole extends radially, and the first locking block can slide along the first guide hole. The first locking block includes a first end. In a first state, the first end extends out of the outer wall of the mold table, and in a second state, the first end is located in the first guide hole.

[0008] Furthermore, the first locking block includes a second end, and the mold rod includes a conical section with the diameter of the conical section gradually decreasing from top to bottom. In the first state, the second end abuts against the maximum diameter of the conical section, and in the second state, the second end abuts against the minimum diameter of the conical section.

[0009] Furthermore, the movable frame includes a first connecting seat, which has a slot and a second guide hole. The lower end of the mold rod can be inserted into the slot. The second guide hole extends radially and is fitted with a second locking block. The second locking block can slide along the second guide hole. The side wall of the mold rod has a first locking hole corresponding to the second locking block. In the first, second, and third states, a portion of the second locking block is inserted into the first locking hole. The upper mold can drive the movable frame to move. In the fourth state, the second locking block disengages from the first locking hole.

[0010] Furthermore, the lower end of the mold rod is hemispherical, the end of the second locking block facing the mold rod is hemispherical, and the first locking hole is a hemispherical groove corresponding to the second locking block.

[0011] Furthermore, the movable frame includes a connecting rod extending toward the fixed frame and passing through the fixed frame. The fixed frame includes a second connecting seat with a second channel through which the connecting rod passes. A limiting plate is provided at the lower end of the connecting rod, and in the fourth state, the limiting plate abuts against the lower end face of the fixed plate.

[0012] Furthermore, the second connecting seat is provided with a third guide hole, which extends radially. A third locking block is installed in the third guide hole and can slide along the third guide hole. The side wall of the connecting rod is provided with a second locking hole corresponding to the third locking block. In the fourth state, part of the third locking block is inserted into the second locking hole.

[0013] Furthermore, the end of the third locking block facing the connecting rod is hemispherical, and the second locking hole is a hemispherical groove corresponding to the third locking block.

[0014] Furthermore, the ejector rod includes a first limiting block and a second limiting block, the movable part includes a first side plate, the fixed frame includes a second side plate, the first side plate and the second side plate extend radially along the lower mold, the ejector rod passes through the first side plate and the second side plate, the first limiting block is located above the first side plate, and the second limiting block is located between the first side plate and the second side plate.

[0015] Furthermore, the push rod is equipped with a return spring, which is located between the lower mold and the first side plate. In the first and second states, the second limiting block abuts against the second side plate, and in the third and fourth states, the first side plate abuts against the first limiting block.

[0016] The beneficial effects of this utility model are:

[0017] This invention employs a method of first separating the side mold to minimize deformation. When the upper mold separates, the lower mold and the hub are fixed by the cooperation of the mold rod, the first locking block on the mold base, and the limiting groove formed on the hub, allowing the upper mold to detach from the hub. After the upper mold and the hub separate, the movable seat connected to the mold rod drives the ejector rod to push the hub out of the lower mold. After the hub is pushed out, the mold rod can detach from the movable frame, allowing the hub to be removed. This invention also eliminates the use of the ejector cylinder under the mold, saving energy consumed in demolding and providing more space for the cooling pipes of the lower mold. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the first state in this embodiment.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0021] Figure 4 for Figure 1 Enlarged view of point C in the middle.

[0022] Figure 5 This is a cross-sectional view of the second state in this embodiment.

[0023] Figure 6 for Figure 5 Enlarged view of point D in the middle.

[0024] Figure 7 This is a cross-sectional view of the third state in this embodiment.

[0025] Figure 8 This is a cross-sectional view of the fourth state in this embodiment.

[0026] Reference numerals: 1. Upper mold; 11. Mold rod; 111. Conical section; 112. First locking hole; 101. Hub; 1011. Limiting groove; 2. Lower mold; 21. Mold table; 211. First guide hole; 212. First channel; 22. First locking block; 221. First end; 222. Second end; 3. Movable frame; 31. First connecting seat; 311. Second guide hole; 312. Slot; 32. Second locking block; 33. Connecting rod; 331. Second locking hole; 332. Limiting plate; 34. First side plate; 4. Fixed frame; 41. Second connecting seat; 411. Third guide hole; 412. Second channel; 42. Third locking block; 43. Second side plate; 5. Push rod; 51. First limiting block; 52. Second limiting block; 53. Return spring; 6. Side mold. Detailed Implementation

[0027] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] like Figures 1 to 8 The present embodiment discloses a casting wheel hub demolding device, including an upper mold 1, a lower mold 2, a side mold 6, a movable frame 3, a fixed frame 4, and a push rod 5. The upper mold 1, the lower mold 2, and the side mold 6 form a wheel hub 101 cavity. The side mold 6 can be demolded in a horizontal direction and is driven by a cylinder. The upper mold 1 is connected to a hydraulic cylinder and is driven by the hydraulic cylinder. The upper mold 1 can move closer to or away from the lower mold 2, while the lower mold 2 remains fixed. During demolding, the side mold 6 is first pulled out from the side to prevent deformation of the side mold 6 during demolding. The present embodiment includes a first state, a second state, a third state, and a fourth state. In the first state, the upper mold 1 and the lower mold 2 are closed. In the second state, the upper mold 1 is separated from the wheel hub 101. In the third state, the push rod 5 lifts the wheel hub 101 away from the lower mold 2. In the fourth state, the mold rod 11 is disengaged from the movable frame 3.

[0029] like Figure 1 , Figure 2 , Figure 4As shown, the upper mold 1 includes a mold rod 11 located at the center of the upper mold 1. The lower mold 2 includes a mold platform 21 with a first channel 212 concentrically arranged with the mold rod 11. The mold platform 21 has a first guide hole 211 with a first locking block 22 installed inside. The first guide hole 211 extends radially, allowing the first locking block 22 to slide along it. A spring is installed inside the first guide hole 211, supporting the first locking block 22 to keep it against the mold rod 11. The first locking block 22 includes a first end 221 and a second end 222. The mold rod 11 includes a conical section 111 with a diameter gradually decreasing from top to bottom. The second end 222 of the first locking block 22 abuts against the conical section 111. The second end 222 is spherical, allowing the second end 222 and the mold rod 11 to... The contact is point contact, which reduces the contact area and friction. In the first state, the first end 221 extends out of the outer wall of the mold table 21. The first end 221 forms a limiting groove 1011 on the hub 101 by casting. The limiting groove 1011 and the first end 221 are engaged. The second end 222 abuts against the maximum diameter of the conical section 111. The first end 221 extends out of the mold table 21 the most. In the second state, the first end 221 is located in the first guide hole 211, and the second end 222 abuts against the minimum diameter of the conical section 111. When the first state changes to the second state, the first end 221 will gradually retract into the first guide hole 211. When the second state is reached, the lock between the hub 101 and the lower mold 2 is released. The length of the conical section 111 is L. The length of L is greater than the contact length between the upper mold 1 and the hub 101, ensuring that the upper mold 1 and the hub 101 are preferentially separated.

[0030] like Figure 1 , Figure 3As shown, the mold rod 11 can pass through the first channel 212 and connect to the movable frame 3. The movable frame 3 includes a first connecting seat 31, which has a slot 312 and a second guide hole 311. The lower end of the mold rod 11 can be inserted into the slot 312. The second guide hole 311 extends radially and is used to install a second locking block 32. The second locking block 32 can slide along the second guide hole 311. The second locking block 32 is supported by a spring so that a part of the second locking block 32 can extend out of the second guide hole 311. The side wall of the mold rod 11 has a first locking hole 112 corresponding to the second locking block 32. Both the first and second locking blocks 32 are provided in multiples. In the first, second, and third states, a portion of the second locking block 32 is inserted into the first locking hole 112. The mold rod 11 and the movable frame 3 remain fixed, and the upper mold 1 can drive the movable frame 3 to move. In the fourth state, the second locking block 32 disengages from the first locking hole 112. In the fourth state, the upward movement of the movable frame 3 is limited, and the second locking block 32 is pressed inward by force to disengage from the first locking hole 112. The mold rod 11 is pulled upward out of the slot 312, and the mold rod 11 and the movable frame 3 disengage, allowing the mold rod 11 to leave the first channel 212. The upper mold 1 moves away from the hub 101, allowing the hub 101 to be removed.

[0031] More preferably, the lower end of the mold rod 11 is hemispherical, the end of the second locking block 32 facing the mold rod 11 is hemispherical, and the first locking hole 112 is a hemispherical groove corresponding to the second locking block 32. The hemispherical second locking block 32 and the hemispherical groove first locking hole 112 cooperate with each other, which can better engage and disengage the second locking block 32 and the first locking hole 112 under force. The lower end of the hemispherical mold rod 11 can better push open all the second locking blocks 32 when it is inserted into the slot 312.

[0032] like Figure 1 , Figure 4 As shown, the movable frame 3 includes a connecting rod 33, which extends toward the fixed frame 4 and passes through the fixed frame 4. The fixed frame 4 includes a second connecting seat 41, which has a second channel 412 through which the connecting rod 33 passes. The lower end of the connecting rod 33 is provided with a limiting plate 332. In the fourth state, the limiting plate 332 abuts against the lower end face of the fixed plate. The limiting plate 332 can limit the upward movement of the movable frame 3. When the movable frame 3 reaches the highest position, the second locking block 32 can disengage from the first locking hole 112.

[0033] More preferably, the second connecting seat 41 is provided with a third guide hole 411, which extends radially. A third locking block 42 is installed in the third guide hole 411 and can slide along the third guide hole 411. The third locking block 42 is supported by a spring and abuts against the connecting rod 33. The side wall of the connecting rod 33 is provided with a second locking hole 331 corresponding to the third locking block 42. In the fourth state, part of the third locking block 42 is inserted into the second locking hole 331. When the movable frame 3 reaches the highest position, the third locking block 42 and the second locking hole 331 engage, fixing the movable frame 3 at the highest position and preventing the movable frame from being fixed. After the movable frame 3 and the mold rod 11 are separated, the movable frame 3 falls downward. When it returns from the fourth state to the first state, the mold rod 11 is reinserted and fixed in the slot 312, and the movable frame 3 moves downward. The third locking block 42 is disengaged from the second locking hole 331, so that the movable frame 3 can descend synchronously with the upper mold 1. Similarly, the end of the third locking block 42 facing the connecting rod 33 is hemispherical, and the second locking hole 331 is a hemispherical groove corresponding to the third locking block 42. The hemispherical third locking block 42 and the hemispherical groove of the second locking hole 331 cooperate with each other, so that the third locking block 42 and the second locking hole 331 can be better engaged and disengaged under force.

[0034] like Figure 1 , Figures 4-8 The movable frame 3 is connected to multiple push rods 5. The upper end of the push rod 5 abuts against the wheel hub 101. The upper end surface of the push rod 5 forms part of the cavity mold surface of the lower mold 2. The push rod 5 passes through the movable frame 3 and is slidably connected to the movable frame 3. The fixed frame 4 is located below the movable frame 3. The push rod 5 is slidably connected to the fixed frame 4. The movable part includes a first side plate 34, which has multiple first side plates 34. The fixed frame 4 includes a second side plate 43, which has multiple second side plates 43. The first side plate 34 and the second side plate 43 extend radially along the lower mold 2. The push rod 5 passes through the first side plate 34 and the second side plate 43. During the process from the second state to the third state, the push rod 5 pushes the wheel 101 out of the lower mold 2. The push rod 5 includes a first limiting block 51 and a second limiting block 52. The first limiting block 51 is located above the first side plate 34. In the third state and the fourth state, the first side plate 34 abuts against the first limiting block 51. The first limiting block 51 is driven upward by the first side plate 34.

[0035] The second limiting block 52 is located between the first side plate 34 and the second side plate 43. The push rod 5 is equipped with a return spring 53, which is located between the lower mold 2 and the first side plate 34. In the first state and the second state, the second limiting block 52 abuts against the second side plate 43. The return spring 53 can reset the push rod 5 in the first state and the second state, so that the second limiting block 52 can abut against the upper end surface of the second side plate 43. The fixing frame 4 keeps the different fixed positions and provides limiting support for the lowermost end of the push rod 5.

[0036] 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 demolding device for cast wheel hubs, characterized in that, The assembly includes an upper mold (1), a lower mold (2), a side mold (6), a movable frame (3), a fixed frame (4), and a push rod (5). A hub (101) cavity is formed between the upper mold (1), the lower mold (2), and the side mold (6). The side mold (6) can be demolded horizontally. The upper mold (1) can move closer to or further away from the lower mold (2). The upper mold (1) includes a mold rod (11), and the lower mold (2) includes a mold platform (21). The mold platform (21) is provided with a first... A channel (212) is provided, through which the mold rod (11) can pass and connect to the movable frame (3). The movable frame (3) is connected to a plurality of top rods (5). The upper end of the top rod (5) abuts against the hub (101). The top rod (5) passes through the movable frame (3) and is slidably connected to the movable frame (3). The fixed frame (4) is located below the movable frame (3). The top rod (5) is slidably connected to the fixed frame (4). Including a first state, a second state, a third state, and a fourth state, in the first state the upper mold (1) and the lower mold (2) are closed, in the second state the upper mold (1) is separated from the wheel hub (101), in the third state the push rod (5) lifts the wheel hub (101) away from the lower mold (2), and in the fourth state the mold rod (11) is separated from the movable frame (3).

2. The casting wheel hub demolding device according to claim 1, characterized in that, The mold platform (21) is provided with a first guide hole (211), and a first locking block (22) is installed in the first guide hole (211). The first guide hole (211) extends radially, and the first locking block (22) can slide along the first guide hole (211). The first locking block (22) includes a first end (221). In a first state, the first end (221) extends out of the outer wall of the mold platform (21), and in a second state, the first end (221) is located in the first guide hole (211).

3. The casting wheel hub demolding device according to claim 2, characterized in that, The first locking block (22) includes a second end (222), and the mold rod (11) includes a conical section (111). The diameter of the conical section (111) gradually decreases from top to bottom. In the first state, the second end (222) abuts against the maximum diameter of the conical section (111), and in the second state, the second end (222) abuts against the minimum diameter of the conical section (111).

4. The casting wheel hub demolding device according to claim 1, characterized in that, The movable frame (3) includes a first connecting seat (31), which has a slot (312) and a second guide hole (311). The lower end of the mold rod (11) can be inserted into the slot (312). The second guide hole (311) extends radially and a second locking block (32) is installed in the second guide hole (311). The second locking block (32) can slide along the second guide hole (311). The side wall of the mold rod (11) has a first locking hole (112) corresponding to the second locking block (32). In the first, second, and third states, a portion of the second locking block (32) is inserted into the first locking hole (112). The upper mold (1) can drive the movable frame (3) to move. In the fourth state, the second locking block (32) disengages from the first locking hole (112).

5. The casting wheel hub demolding device according to claim 4, characterized in that, The lower end of the mold rod (11) is hemispherical, the end of the second locking block (32) facing the mold rod (11) is hemispherical, and the first locking hole (112) is a hemispherical groove corresponding to the second locking block (32).

6. The casting wheel hub demolding device according to claim 1, characterized in that, The movable frame (3) includes a connecting rod (33) extending toward the fixed frame (4) and passing through the fixed frame (4). The fixed frame (4) includes a second connecting seat (41) with a second channel (412) through which the connecting rod (33) passes. The lower end of the connecting rod (33) is provided with a limiting plate (332), which abuts against the lower end face of the fixed plate in the fourth state.

7. The casting wheel hub demolding device according to claim 6, characterized in that, The second connecting seat (41) is provided with a third guide hole (411), which extends radially. A third locking block (42) is installed in the third guide hole (411). The third locking block (42) can slide along the third guide hole (411). The side wall of the connecting rod (33) is provided with a second locking hole (331) corresponding to the third locking block (42). In the fourth state, part of the third locking block (42) is inserted into the second locking hole (331).

8. The casting wheel hub demolding device according to claim 7, characterized in that, The third locking block (42) is hemispherical at one end facing the connecting rod (33), and the second locking hole (331) is a hemispherical groove corresponding to the third locking block (42).

9. The casting wheel hub demolding device according to claim 1, characterized in that, The push rod (5) includes a first limiting block (51) and a second limiting block (52). The movable frame (3) includes a first side plate (34). The fixed frame (4) includes a second side plate (43). The first side plate (34) and the second side plate (43) extend radially along the lower mold (2). The push rod (5) passes through the first side plate (34) and the second side plate (43). The first limiting block (51) is located above the first side plate (34), and the second limiting block (52) is located between the first side plate (34) and the second side plate (43).

10. The casting wheel hub demolding device according to claim 9, characterized in that, The push rod (5) is equipped with a reset spring (53), which is located between the lower mold (2) and the first side plate (34). In the first and second states, the second limiting block (52) abuts against the second side plate (43), and in the third and fourth states, the first side plate (34) abuts against the first limiting block (51).

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