Three-plate mold for casting automobile parts

Abstract

The utility model relates to a three-plate mould for casting automobile parts, which comprises a movable mould plate and a fixed mould plate, the fixed mould plate is further provided with a stripper plate, the stripper plate is provided with a feed port for injecting molten metal, and the feed port is communicated with a casting cavity through an inflow port of the fixed mould plate. The mold sticking prevention mechanism is used for preventing a material cake formed by previous molten metal from sticking to the mold of the stripper plate, the mold sticking prevention mechanism comprises an ejection piece and a driving source arranged on the stripper plate, a power output rod of the driving source is connected with the ejection piece, and when the stripper plate moves to the state of breaking the material cake, the ejection piece is driven to move forwards to eject the material cake, and the ejection piece is driven to move forwards to eject the material cake. The utility model has the advantages that the anti-sticking mechanism is arranged and comprises the ejection piece adjacent to the material cake and the driving source arranged on the stripper plate, and when the material cake is snapped, the power output rod drives the ejection piece to advance to eject the material cake, so that the material cake is prevented from sticking to the stripper plate in the process of removing the material cake, and the product quality is improved. And the safety of operators is guaranteed while the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal casting technical field especially a three-plate mould for casting production automobile parts. BACKGROUND

[0002] Three-plate mould is a special mould structure with three mould plates, the mould plates are in turn movable mould plate, fixed mould plate and stripping plate, three-plate mould is suitable for more complex and high surface quality requirement castings, so it is widely used in automobile parts manufacturing field, the specific structure of three-plate mould can refer to for example the "high-pressure casting three-plate mould structure for new energy automobile shock tower" disclosed by Chinese patent ZL202223356089.4.

[0003] Consistent with two-plate mould, the casting cavity of three-plate mould is formed by movable mould plate and fixed mould plate relative combination, the difference lies in that the feed inlet for injecting metal melt is usually arranged on the stripping plate, and the flow inlet is arranged on the fixed mould plate to make the feed inlet and the casting cavity fluidly connected. In order to ensure that the castings have good quality, more metal melt will be injected, so the excess metal melt will overflow to the feed inlet and solidify to form the cake connected with the castings, and the cake can be naturally pulled off through the mold opening action between the stripping plate and the fixed mould plate to facilitate the subsequent castings demolding.

[0004] However, three-plate mould still has certain defects in the process of pulling off the cake through the stripping plate and the fixed mould plate: the three-plate mould relies on the pulling force of the stripping plate and the fixed mould plate to pull off the connection between the cake and the flow inlet when the stripping plate and the fixed mould plate are separated, but sometimes the cake and the stripping plate are stuck on the stripping plate, due to the limited space of the casting equipment, in order to ensure that the movable mould plate and the fixed mould plate have enough mold opening space, the distance between the stripping plate and the fixed mould plate is narrow, which makes it difficult for the operator to repair the mold and take out the cake remaining on the stripping plate, and even there is a risk of injury. SUMMARY

[0005] The utility model solves the technical problem in the prior art, and provides a three-plate mould which can avoid the cake and the stripping plate being stuck during the process of removing the cake.

[0006] The utility model solves the technical problems by adopting the following technical scheme: the three-plate mould for casting automobile parts, including movable mould plate and fixed mould plate for forming a casting cavity, the fixed mould plate is further provided with a stripping plate, the stripping plate is provided with a feed inlet for injecting metal melt, correspondingly, the fixed mould plate includes a flow inlet connected with the casting cavity, in the state of the fixed mould plate and the stripping plate being combined, the feed inlet and the flow inlet are connected.

[0007] The application is characterized in that: further comprising an anti-sticking mechanism for avoiding the sticking of the previously formed metal melt cake of the feeding port and the flow port to the stripper plate, the anti-sticking mechanism comprising an ejector adjacent to the metal melt cake and a driving source arranged on the stripper plate, a power output rod of the driving source being connected with the ejector, so that when the stripper plate moves to a state of breaking the metal melt cake, the ejector is driven to advance to eject the metal melt cake.

[0008] In order to realize the ejection of the metal melt cake by the ejector, preferably, the fixed die plate and the stripper plate are closed to form a flow channel for connecting the feeding port and the flow port, the ejector extends towards the flow channel and is at least partially inserted into the flow channel, and correspondingly, the stripper plate is provided with a passage for the ejector to pass through. The ejector passes through the passage of the stripper plate to be at least partially inserted into the flow channel, and the flow channel is used to connect the feeding port and the flow port, so that the metal melt cake formed by the solidification of the previously formed metal melt will also be formed in the flow channel, so that the ejector can act on the metal melt cake to avoid the sticking of the metal melt cake to the stripper plate.

[0009] Further, in order to eject the metal melt cake by the advancing action of the ejector, preferably, the part of the stripper plate corresponding to the flow channel at least partially extends forward along the length direction of the power output rod and is inclined to form an inclined surface towards the direction close to the fixed die plate, so as to convert the advancing power of the ejector into the power for driving the metal melt cake to move away from the stripper plate. The ejector advances under the action of the power output rod of the driving source, but the metal melt cake needs to move away from the stripper plate, i.e. move towards the direction close to the fixed die plate to be separated, and the direction is cross with the advancing direction of the ejector, so the inclined surface is needed to convert the advancing power of the ejector into the power for driving the metal melt cake to move away from the stripper plate.

[0010] In order to ensure that the position of the broken metal melt cake is the flow port, preferably, the feeding port is located in front of the flow port, correspondingly, the flow channel extends from the feeding port towards the flow port, and the part of the fixed die plate corresponding to the front end of the inclined surface is at least partially recessed downwards to form a recess for increasing the cross-sectional area of the corresponding position of the flow channel. By such design, on the one hand, the cross-sectional area of the flow channel is increased to facilitate the injection of the metal melt into the casting cavity, and on the other hand, considering that due to the existence of the inclined surface, the cross-sectional area of the flow channel corresponding to the front end of the inclined surface is smaller, there is a risk that the metal melt cake will be broken at this position during the breaking process, instead of being broken at the flow port, so that the casting cannot be demolded. Therefore, the recess is needed to increase the cross-sectional area of the metal melt cake at this position.

[0011] In order to avoid the ejection member advancing too far, preferably, the ejection member comprises a connecting end for connecting with the power output rod and an ejection end for ejecting the cake, the rear of the ejection end is at least partially raised to form a limiting part, correspondingly, the channel is provided with a matching part matched with the limiting part, in the state that the ejection member advances to eject the cake, the limiting part and the matching part abut to limit the ejection member from continuing to advance. The limiting part can be an additional structure or a structure such as a limiting step, if the limiting part is not provided, the ejection member can be inserted into the flow channel as a whole, if the ejection member advances too far, the flow channel will be damaged due to scraping, knocking and the like, especially in the case of the inclined surface, it is more likely to cause scraping, knocking and the like.

[0012] In order to connect the ejection member with the power output rod, preferably, the ejection member is in the shape of a rod, and the anti-sticking mold mechanism further comprises a connecting piece, correspondingly, the connecting end of the ejection member and the power output rod are coaxially connected through the connecting piece. By coaxially connecting the connecting end of the ejection rod with the power output rod through the connecting piece, the transmission efficiency of the ejection member advancing can be improved, and the power of the driving source can be prevented from being lost due to deviation.

[0013] In order to facilitate the connection of the ejection member and the power output rod through the connecting piece, preferably, the end of the power output rod is at least partially raised outward to form a first flange, the connecting end is at least partially raised outward to form a second flange, correspondingly, the connecting piece is provided with a first groove for inserting the first flange and a second groove for inserting the second flange, and the opening directions of the first groove and the second groove are opposite. By such design, on the one hand, the connecting end of the ejection member and the power output rod can be connected with extremely simple structure, on the other hand, the opening directions of the first groove and the second groove are opposite, so as to ensure the coaxiality of the power output rod and the ejection member during work, maintain accurate centering and improve stability.

[0014] The "fluid communication" referred to in the utility model refers to the spatial positional relationship between two components or parts (hereinafter collectively referred to as first part and second part), i.e. fluid (gas, liquid or mixture of the two) can flow or / and be transported from the first part to the second part along the flow path, which can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipeline, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing fluid to flow or a combination thereof.

[0015] Compared with the prior art, the utility model discloses the advantages lie in: be provided with anti -sticking mould mechanism, including the ejection of adjacent material cake and be located on the driving source of material removal board, in the state of material cake being pulled apart, the power output rod of driving source can drive the ejection forward and eject material cake, thereby avoid in the process of removing material cake material cake and material removal board stick to mould, improve work efficiency, guarantee the safety of operating personnel. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0017] Figure 2 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0018] Figure 3 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0019] Figure 4 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0020] Figure 5 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0021] Figure 6 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0022] Figure 7 It is the structure schematic drawing of three board mould in the utility model embodiment;

[0023] Figure 8 It is the structure schematic drawing of three board mould in the utility model embodiment; DETAILED DESCRIPTION

[0024] The utility model will be further described in detail below in combination with specific embodiment.

[0025] As Figures 1-8 It is the preferred embodiment of the utility model. As Figures 1-3As shown, the three-plate mold for casting automobile parts in the embodiment comprises a movable mold plate 11 and a fixed mold plate 12 for closing to form a casting cavity C, and the fixed mold plate 12 is further provided with a stripper plate 13, which is provided with a feeding port 131 for injecting metal melt. Correspondingly, the fixed mold plate 12 comprises a flow inlet 121 communicating with the casting cavity C, and the feeding port 131 and the flow inlet 121 are communicated in the closed state of the fixed mold plate 12 and the stripper plate 13. The three-plate mold further comprises an anti-sticking mechanism 2 for avoiding the sticking of the previously formed metal melt cake A of the feeding port 131 and the flow inlet 121 to the stripper plate 13, which comprises an ejector 21 adjacent to the cake A and a driving source 22 provided on the stripper plate 13, and the power output rod 221 of the driving source 22 is connected with the ejector 21, so that the ejector 21 is driven to advance to eject the cake A in the state that the stripper plate 13 moves to break the cake A. The fixed mold plate 12 and the stripper plate 13 are closed to form a flow channel 14 for communicating the feeding port 131 and the flow inlet 121, the ejector 21 extends towards the flow channel 14 and is at least partially inserted into the flow channel 14, and correspondingly, the stripper plate 13 is provided with a passage 132 for the ejector 21 to pass through. The ejector 21 passes through the stripper plate 13 through the passage 132 and is at least partially inserted into the flow channel 14, and the flow channel 14 is used to communicate the feeding port 131 and the flow inlet 121, so that the flow channel 14 also forms a cake A of previously solidified metal melt, so that the ejector 21 can act on the cake A to avoid the cake A from sticking to the stripper plate 13.

[0026] In the specific structure of the anti-sticking mechanism 2 and the flow channel 14, as Figure 2As shown, the part of the stripper plate 13 corresponding to the runner 14 at least partially extends forward along the length direction of the power output rod 221 and is inclined to form an inclined surface 133 toward the direction close to the fixed mold plate 12, so as to convert the advancing power of the power output rod 221 acting on the ejector 21 into the power driving the cake A to move away from the stripper plate 13. The ejector 21 advances under the action of the power output rod 221 of the driving source 22, but the cake A needs to move away from the stripper plate 13, i.e. move toward the direction close to the fixed mold plate 12 to be separated, which is in a cross relationship with the advancing direction of the ejector 21, so the inclined surface 133 is needed to convert the advancing power of the ejector 21 into the power driving the cake A to move away from the stripper plate 13. Further, the feeding port 131 is located in front of the flow inlet 121, and correspondingly, the runner 14 extends from the feeding port 131 toward the flow inlet 121, and the position on the fixed mold plate 12 corresponding to the front end of the inclined surface 133 is at least partially recessed downward to form a recess 122 for increasing the cross-sectional area of the corresponding position of the runner 14. In this way, on the one hand, the cross-sectional area of the runner 14 can be increased to facilitate the injection of metal melt into the casting cavity C, and on the other hand, considering that due to the existence of the inclined surface 133, the cross-sectional area of the runner 14 corresponding to the front end of the inclined surface 133 is smaller, there is a risk that the cake A will be broken at this position during the breaking process, rather than at the flow inlet 121, which will cause the casting to be unable to be demolded. Therefore, the recess 122 is needed to increase the cross-sectional area of the cake A at this position.

[0027] In addition, the ejector 21 also needs to consider the limiting and connection problems with the power output rod 221. In terms of limiting, Figure 4 As shown, the ejector 21 includes a connecting end 211 for connecting with the power output rod 221 and an ejecting end 212 for ejecting the cake A, and the rear of the ejecting end 212 is at least partially protruded to form a limiting portion 213. Correspondingly, the channel 132 is provided with a cooperating portion 134 cooperating with the limiting portion 213. In the state that the ejector 21 advances to eject the cake A, the limiting portion 213 and the cooperating portion 134 abut to limit the ejector 21 from continuing to advance. The limiting portion 213 in the embodiment is a limiting step structure. If the limiting portion 213 is not provided, the ejector 21 as a whole can be inserted into the runner 14. If the ejector 21 advances too far, it will cause the runner 14 to be damaged due to scratching, knocking and the like, especially in the case of the existence of the inclined surface 133. Figures 5-6As shown, the ejector 21 is rod-shaped, and the anti-sticking mechanism 2 also includes a connector 23. Correspondingly, the connecting end 211 of the power output rod 221 and the ejector 21 is coaxially connected through the connector 23. By connecting the connecting end 211 of the ejector 21 and the power output rod 221 coaxially through the connector 23, the transmission efficiency of the ejector 21's forward movement can be improved, and the power of the drive source 22 can be avoided due to deviation. The end of the power output rod 221 protrudes outward at least partially to form a first flange 222, and the connecting end 211 protrudes outward at least partially to form a second flange 214. Correspondingly, the connector 23 is provided with a first groove 231 for the first flange 222 to be inserted and a second groove 232 for the second flange 214 to be inserted, and the opening directions of the first groove 231 and the second groove 232 are opposite. This design allows for a very simple connection between the power output rod 221 and the connecting end 211 of the ejector 21. On the other hand, setting the opening directions of the first groove 231 and the second groove 232 to opposite directions ensures the coaxiality of the power output rod 221 and the ejector 21 during operation, maintaining precise alignment and improving stability.

[0028] The usage process of the anti-sticking mechanism 2 provided in this embodiment is as follows:

[0029] like Figure 7 As shown, the anti-sticking mechanism 2 is in its initial state at this time. The stripper plate 13 has opened the mold with the fixed template 12, thus breaking the material cake A, but the material cake A has not yet been stripped from the stripper plate 13. As the drive source 22 drives the ejector 21 forward, see... Figure 8 At this time, the limiting part 213 on the ejector 21 abuts against the mating part 134 on the stripper plate 13, and the ejector end 212 has contacted the material cake A and applied a forward force to the material cake A. The dotted arrow on the ejector 21 indicates the forward force of the ejector 21, and with the cooperation of the inclined surface 133, this forward force is converted into... Figure 8 The power indicated by the dashed arrow on the middle feed cake A causes the feed cake A to move away from the stripper plate 13 and thus detach from the stripper plate 13.

Claims

1. A three-plate mold for casting automobile parts, comprising a movable mold plate (11) and a fixed mold plate (12) for closing to form a casting cavity (C), the fixed mold plate (12) further comprising a stripper plate (13) provided with a feeding opening (131) for injecting metal melt, and the fixed mold plate (12) comprising a flow inlet (121) in communication with the casting cavity (C), the feeding opening (131) and the flow inlet (121) being in communication when the fixed mold plate (12) and the stripper plate (13) are closed. characterized in that The mold further comprises an anti-sticking mechanism (2) for avoiding the sticking of a metal melt cake (A) formed in the feeding opening (131) and the flow inlet (121) to the stripper plate (13), the anti-sticking mechanism (2) comprising an ejector (21) adjacent to the metal melt cake (A) and a driving source (22) provided on the stripper plate (13), a power output rod (221) of the driving source (22) being connected to the ejector (21), so that the ejector (21) is driven to advance and eject the metal melt cake (A) when the stripper plate (13) moves to a position for breaking the metal melt cake (A).

2. The tri-plate module of claim 1, wherein: The fixed mold plate (12) and the stripper plate (13) are closed to form a flow channel (14) for communicating the feeding opening (131) and the flow inlet (121), the ejector (21) extending towards the flow channel (14) and being at least partially inserted in the flow channel (14), and the stripper plate (13) being provided with a passage (132) for the ejector (21) to pass through.

3. The tri-plate die of claim 2, wherein: The part of the stripper plate (13) corresponding to the flow channel (14) extends at least partially along the length direction of the power output rod (221) and is inclined towards the fixed mold plate (12) to form an inclined surface (133), so that the advancing power of the power output rod (221) acting on the ejector (21) is converted into power for moving the metal melt cake (A) away from the stripper plate (13).

4. The tri-plate die of claim 3, wherein: The feeding opening (131) is located in front of the flow inlet (121), and the flow channel (14) extends from the feeding opening (131) towards the flow inlet (121), and the fixed mold plate (12) is at least partially recessed at a position corresponding to the front end of the inclined surface (133) to form a recess (122) for increasing the cross-sectional area of the corresponding position of the flow channel (14).

5. The triplate mode according to any one of claims 2 to 4, characterized in that: The ejector (21) comprises a connecting end (211) for connecting to the power output rod (221) and an ejecting end (212) for ejecting the metal melt cake (A), the rear of the ejecting end (212) being at least partially raised to form a limiting portion (213), and the passage (132) being provided with a cooperating portion (134) for cooperating with the limiting portion (213), the limiting portion (213) and the cooperating portion (134) abutting to limit the further advancement of the ejector (21) when the ejector (21) advances to eject the metal melt cake (A).

6. The tri-plate die of claim 5, wherein: The ejection piece (21) is in the shape of a rod, and the anti-sticking mold mechanism (2) further comprises a connecting piece (23), and the power output rod (221) and the connecting end (211) of the ejection piece (21) are coaxially connected through the connecting piece (23).

7. The tri-plate die of claim 6, wherein: The end of the power output rod (221) is at least partially outwardly protruded to form a first flange (222), the connecting end (211) is at least partially outwardly protruded to form a second flange (214), the connecting piece (23) is provided with a first groove (231) for inserting the first flange (222) and a second groove (232) for inserting the second flange (214), and the opening directions of the first groove (231) and the second groove (232) are opposite.

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