Three-plate die for horizontal die-casting machine

Abstract

The invention relates to a three-plate die for a horizontal die-casting machine, which comprises a movable die plate capable of being attached to a first seat plate of the die-casting machine, and further comprises a second seat plate capable of being attached to the die-casting machine and a stripper plate located in front of the movable die plate, and a fixed die plate is further arranged between the movable die plate and the stripper plate. The three-plate mold is characterized in that the three-plate mold further comprises a connecting mechanism capable of bearing the gravity of the fixed mold plate, the connecting mechanism comprises a connecting piece used for connecting the fixed mold plate and a guide column of a die-casting machine, and therefore the guide column can bear the gravity of the fixed mold plate, and compared with the prior art, the three-plate mold has the advantages that the three-plate mold is provided with the connecting mechanism capable of bearing the gravity of the fixed mold plate; the connecting mechanism is connected with the fixed mold plate and the guide pillar of the die-casting machine through the connecting piece, so that the guide pillar can bear the gravity of the fixed mold plate, the fixed mold plate is effectively prevented from shifting downwards due to the influence of the gravity of the fixed mold plate, and the rejection rate of castings can still be greatly reduced after the fixed mold plate is used for many times.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a three-plate mold convenient for use in a horizontal die-casting machine. Background Art

[0002] A three-plate mold is a mold structure in which a stripper plate is added to the movable mold plate and the fixed mold plate of a two-plate mold, wherein the order of the mold plates from front to back is a stripper plate, a fixed mold plate and a movable mold plate, that is, the fixed mold plate can also be called a middle mold plate, and the feed port is arranged on the stripper plate, and the stripper plate can move forward relative to the fixed mold plate and remove the material cake formed by the solidification of the molten metal in the feed port. For the specific structure of the three-plate mold, please refer to, for example, the “A Three-Plate Mold” disclosed in Chinese Patent ZL202010058661.5.

[0003] The above-mentioned two kinds of mold structures are commonly used in horizontal die-casting machines. For the specific structure of the die-casting equipment, reference can be made to, for example, the "die-casting machine" disclosed in Chinese patent ZL202020065348.X. The horizontal die-casting machine usually includes a first seat plate and a second seat plate, and the first seat plate and the second seat plate are connected by four guide pillars. If the two-plate mold is installed on the horizontal die-casting machine, the movable mold plate can be installed on the first seat plate, and the fixed mold plate is installed on the second seat plate. The first seat plate moves along the guide pillars, so that the movable mold plate can move forward with the first seat plate to close the mold with the fixed mold plate to form a casting cavity or move backward to open the mold with the fixed mold plate.

[0004] However, if the three-plate mold is installed on the above-mentioned horizontal die-casting machine, the following defects will occur: First, since the three-plate mold also includes a stripper plate located in front of the fixed mold plate, the stripper plate replaces the fixed mold plate and is installed on the second base plate, resulting in the fixed mold plate only being able to maintain a partial connection with the stripper plate, so that the fixed mold plate will sometimes deviate downward under the influence of its own gravity. Once the deviation occurs, the movable mold plate and the fixed mold plate will be aligned to form an offset casting cavity or the fixed mold plate will interfere with the casting, thereby increasing the scrap rate of the casting; second, due to the lack of guidance between the movable mold plate, the fixed mold plate and the stripper plate, even if the fixed mold plate does not deviate downward due to its own gravity during long-term use, it is still inevitable that the fixed mold plate will deviate, which will also have a certain negative impact on the quality of the casting; third, since the above-mentioned material cake is connected to the casting, before the movable mold plate and the fixed mold plate are opened to remove the casting, the material cake must be separated from the casting first, so that the three-plate mold needs to follow a fixed mold opening sequence, but the traditional three-plate mold is difficult to guarantee this mold opening sequence. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a three-plate formwork which can prevent the fixed formwork from deviating downward due to the influence of its own gravity in view of the above-mentioned existing technical status.

[0006] The second technical problem to be solved by the present invention is to provide a three-plate formwork that can avoid offset between the templates due to lack of guidance in view of the above-mentioned existing technical status.

[0007] The third technical problem to be solved by the present invention is to provide a three-plate mold which can avoid sequence errors when opening the mold in view of the above-mentioned existing technical status.

[0008] The technical solution adopted by the present invention to solve the first technical problem is as follows: the three-plate mold for a horizontal die-casting machine includes a movable platen that can be attached to a first base plate of the die-casting machine, and also includes a stripper plate that can be attached to a second base plate of the die-casting machine and is located in front of the movable platen, and a fixed platen is further arranged between the movable platen and the stripper plate;

[0009] The invention is characterized in that it also comprises a connecting mechanism capable of bearing the weight of the fixed template, wherein the connecting mechanism comprises a connecting piece for connecting the fixed template and a guide column of a die-casting machine, so that the guide column can bear the weight of the fixed template.

[0010] In order to bear the weight of the fixed template through the guide column, preferably, the connecting member includes a first connecting portion for connecting with the upper surface of the fixed template, and also includes a second connecting portion for connecting with the guide column of the die-casting machine located above the fixed template. Guide columns are provided above and below the fixed template, so in fact, the weight of the fixed template can also be borne by the guide column below the fixed template, but the upper surface of the fixed template and the guide column above the fixed template are connected by the first connecting portion and the second connecting portion. This is because the force applied to the connecting member is a tensile force rather than a compressive force, and materials such as aluminum and steel often have a tensile strength greater than a compressive strength, so they are more suitable for the arrangement in this solution and are easier to install.

[0011] In order to realize that the connector can connect the fixed template and the guide column above, preferably, the first connecting part is located on the inner side relative to the guide column along the length direction of the upper surface of the fixed template, the first connecting part at least partially extends upward to form a vertical part, the end of the vertical part extends toward the guide column to form a transverse part arranged above the guide column, and the transverse part constitutes the second connecting part. This structure makes the connector similar to a Z-shape, and the installation of the connector is extremely simple by the arrangement, and if the connector is provided on both sides of the fixed template, it can play a role similar to a "pole", stably bearing the gravity of the fixed template to prevent it from deviating downward.

[0012] In order to enable the connecting member to withstand the weight of the fixed template, preferably, a first reinforcing rib is formed between the first connecting portion and the vertical portion, at least partially extending along the thickness direction of the fixed template, and similarly, a second reinforcing rib is formed between the second connecting portion and the vertical portion, at least partially extending along the thickness direction of the fixed template. The first reinforcing rib and the second reinforcing rib can effectively improve the tensile strength of the connecting member, so that the connecting member is sufficient to withstand the weight of the fixed template.

[0013] In order to facilitate maintenance of the connector, preferably, a friction block adapted to the guide post is provided between the second connector and the guide post, and the friction block is detachably connected to the second connector. Since the second connector is mounted on the guide post and moves on the guide post along with the fixed template, if the friction block is not provided, the second connector will directly contact the guide post and wear out during the movement, and the entire connector needs to be replaced. However, by providing the friction block, only the friction block needs to be replaced.

[0014] In order to solve the second technical problem, preferably, the stripper plate is further provided with a guide member, the guide member extends toward the movable template and is at least partially inserted into the movable template, and the movable template and the fixed template are both provided with a slide groove for the guide member to slide. The guide member moves in the slide grooves on the movable template and the fixed template, providing a guide for the movement between the three templates to avoid deviation due to lack of guidance.

[0015] In order to improve the stability of the guide member, preferably, the slideway is further provided with guide sleeves located on both sides of the guide member along the width direction. The guide sleeves can improve the stability of the guide member when it moves in the slideway, and can also reduce the wear of the guide member.

[0016] In order to solve the third technical problem, preferably, a locking tongue is further provided on the fixed template, and a locking seat engaged with the locking tongue is provided on the movable template so that the movable template and the fixed template are in a locked state. Correspondingly, the guide member at least partially extends toward the locking tongue to form an action portion that interferes with the locking tongue. When the stripper plate moves to the state of opening the mold with the fixed template, the action portion forces the locking tongue and the locking seat to separate so that the movable template and the fixed template are switched to an active state. In the initial state, the movable template and the fixed template are in a locked state and can only be switched to an active state under the compulsion of the action portion, that is, the stripper plate and the fixed template need to open the mold first, and then the movable template and the fixed template can open the mold, so that the opening order of the three-plate mold can be controlled.

[0017] Furthermore, in order to realize that when the stripper plate moves to the state of opening the mold with the fixed mold plate, the action part can switch the movable mold plate and the fixed mold plate to the active state, preferably, the lock tongue is in the shape of a rod, and the end portion adjacent to the lock seat at least partially extends toward the lock seat to form a hook-shaped structure that engages with the lock seat, and correspondingly, the fixed mold plate is also provided with a rotating shaft for the lock tongue to rotate around the rotating shaft, so that when the stripper plate moves to the state of opening the mold with the fixed mold plate, the action part forces the lock tongue to rotate around the rotating shaft in a direction away from the lock seat to disengage from the lock seat. Through this structure, the control of the mold opening sequence can be realized in a relatively simple way, and after the movable mold plate and the fixed mold plate are closed again, the hook-shaped structure of the lock tongue can be engaged with the lock seat again, so that the movable mold plate and the fixed mold plate return to the locked state.

[0018] Compared with the prior art, the advantages of the present invention are that the three-plate mold has a connecting mechanism that can withstand the gravity of the fixed platen, and the connecting mechanism connects the fixed platen and the guide column of the die-casting machine through a connecting piece, so that the guide column can bear the gravity of the fixed platen, effectively avoiding the downward deviation of the fixed platen due to the influence of its own gravity, thereby greatly reducing the scrap rate of castings after multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a three-plate mold in an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a connecting mechanism in an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the exploded structure of the connecting mechanism in an embodiment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a connecting member in an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the friction block in an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the three-plate mold from another angle in an embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of a partial explosion structure of a three-plate mold in an embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the state of the three-plate mold in the initial state in the embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the state in which the stripping plate and the fixed platen of the three-plate mold are in the mold opening state in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with specific embodiments.

[0029] like Figures 1 to 7 As shown in FIG. 1 , it is a preferred embodiment of the present invention. Figure 1 As shown, the three-plate mold for a horizontal die-casting machine includes a movable mold plate 11 that can be attached to the first seat plate A of the die-casting machine, and also includes a stripper plate 12 that can be attached to the second seat plate B of the die-casting machine and is located in front of the movable mold plate 11. A fixed mold plate 13 is also arranged between the movable mold plate 11 and the stripper plate 12. The three-plate mold also includes a connecting mechanism 2 that can withstand the weight of the fixed mold plate 13. The connecting mechanism 2 includes a connecting piece 21 for connecting the fixed mold plate 13 and the guide column C of the die-casting machine, so that the guide column C can bear the weight of the fixed mold plate 13. Figure 2 The connecting member 21 includes a first connecting portion 211 for connecting to the upper surface of the fixed mold plate 13, and also includes a second connecting portion 212 for connecting to the guide column C of the die casting machine located above the fixed mold plate 13. The guide columns C are provided above and below the fixed mold plate 13, so in fact, the gravity of the fixed mold plate 13 can also be borne by the guide column C below the fixed mold plate 13. However, the upper surface of the fixed mold plate 13 and the guide column C above the fixed mold plate 13 are connected by the first connecting portion 211 and the second connecting portion 212. This is because the force applied to the connecting member 21 is a tensile force rather than a compressive force. For example, materials such as aluminum and steel often have a tensile strength greater than a compressive strength. Therefore, the arrangement in this embodiment is more applicable, and this solution is easier to install.

[0030] Regarding the specific structure of the connecting member 21, Figures 3-4 As shown, the first connection part 211 is located on the inner side relative to the guide column C along the length direction of the upper surface of the fixed template 13, and the first connection part 211 at least partially extends upward to form a vertical part 22, and the end of the vertical part 22 extends toward the guide column C to form a transverse part 23 arranged above the guide column C, and the transverse part 23 constitutes the second connection part 212. This structure makes the connection member 21 similar to a Z-shaped, and the installation of the connection member 21 is extremely simple by the arrangement. In this embodiment, the connection members 21 are provided on both sides of the fixed template 13, which can play a role similar to a "pole" to stably bear the gravity of the fixed template 13 to prevent it from deviating downward. A first reinforcing rib 24 is formed between the first connection part 211 and the vertical part 22, at least partially extending along the thickness direction of the fixed template 13. Similarly, a second reinforcing rib 25 is formed between the second connection part 212 and the vertical part 22, at least partially extending along the thickness direction of the fixed template 13. The first reinforcing ribs 24 and the second reinforcing ribs 25 can effectively improve the tensile strength of the connecting member 21, so that the connecting member 21 can withstand the gravity of the fixed template 13. Figure 5As shown, a friction block 26 adapted to the guide column C is further provided between the second connection portion 212 and the guide column C, and the friction block 26 is detachably connected to the second connection portion 212. Since the second connection portion 212 is mounted on the guide column C, and the second connection portion 212 moves on the guide column C along with the fixed template 13, if the friction block 26 is not provided, the second connection portion 212 will directly contact the guide column C and wear out during the movement, and the entire connection member 21 needs to be replaced. However, by providing the friction block 26, only the friction block 26 needs to be replaced.

[0031] Considering that each template may sometimes be offset due to lack of guidance, such as Figures 6-7 As shown, the stripper plate 12 is also provided with a guide member 3, which extends toward the movable plate 11 and is at least partially inserted into the movable plate 11, and the movable plate 11 and the fixed plate 13 are both provided with a slide groove 31 for the guide member 3 to slide. The slide groove 31 is also provided with guide sleeves 32 located on both sides of the guide member 3 along the width direction. The guide sleeves 32 can improve the stability of the guide member 3 when it moves in the slide groove 31 on the one hand, and can also reduce the wear of the guide member 3 on the other hand. Furthermore, the guide member 3 can also avoid errors in the order when opening the mold. The fixed mold plate 13 is also provided with a locking tongue 41, and the movable mold plate 11 is provided with a locking seat 42 that is engaged with the locking tongue 41 so that the movable mold plate 11 and the fixed mold plate 13 are in a locked state. Correspondingly, the guide member 3 at least partially extends toward the locking tongue 41 to form an action portion 33 that interferes with the locking tongue 41. When the stripper plate 12 moves to the state of opening the mold with the fixed mold plate 13, the action portion 33 forces the locking tongue 41 and the locking seat 42 to separate so that the movable mold plate 11 and the fixed mold plate 13 are switched to an active state. In the initial state, the movable mold plate 11 and the fixed mold plate 13 are in a locked state and can only be switched to an active state under the force of the action portion 33, that is, the stripper plate 12 and the fixed mold plate 13 need to be opened first, and then the movable mold plate 11 and the fixed mold plate 13 can be opened, so that the opening order of the three-plate mold can be controlled. Specifically, the lock tongue 41 is in the shape of a rod, and the end portion adjacent to the lock seat 42 at least partially extends toward the lock seat 42 to form a hook-shaped structure 411 that engages with the lock seat 42. Correspondingly, a rotating shaft 42 is also provided on the fixed mold plate 13 for the lock tongue 41 to rotate around the rotating shaft 43, so that when the stripper plate 12 moves to the state of mold opening with the fixed mold plate 13, the action portion 33 forces the lock tongue 41 to rotate around the rotating shaft 43 in a direction away from the lock seat 42 to disengage from the lock seat 42. Through this structure, the control of the mold opening sequence can be realized in a relatively simple manner. After the movable mold plate 11 and the fixed mold plate 13 are molded again, the hook-shaped structure 411 of the lock tongue 41 can engage with the lock seat 42 again, so that the movable mold plate 11 and the fixed mold plate 13 return to the locked state.

[0032] The specific mold opening process of the stripper plate 12 and the fixed mold plate 13 is as follows:

[0033] like Figure 8As shown, at this time, the stripper plate 12 and the fixed plate 13 are in the initial state, the hook structure 411 of the lock tongue 41 is engaged with the lock seat 42, so that the movable plate 11 cannot be separated from the fixed plate 13; as the stripper plate 12 moves forward, see Fig. 9 The action portion 33 of the guide member 3 conflicts with the locking tongue 41 and forces the locking tongue 41 to rotate around the rotating axis 43 in a direction away from the locking seat 42, and finally the locking seat 42 is separated from the locking tongue 41, so that the movable mold plate 11 can be separated from the fixed mold plate 13, thereby controlling the mold opening order.

Claims

1. A three-plate mold for a horizontal die-casting machine, comprising a movable platen (11) that can be attached to a first base plate (A) of the die-casting machine, and a stripper plate (12) that can be attached to a second base plate (B) of the die-casting machine and is located in front of the movable platen (11), and a fixed platen (13) is further arranged between the movable platen (11) and the stripper plate (12); Features: It also includes a connecting mechanism (2) capable of bearing the weight of the fixed mold plate (13), and the connecting mechanism (2) includes a connecting piece (21) for connecting the fixed mold plate (13) and a guide column (C) of a die-casting machine, so that the guide column (C) can bear the weight of the fixed mold plate (13).

2. The three-plate mold according to claim 1, characterized in that: The connecting member (21) includes a first connecting portion (211) for connecting to the upper surface of the fixed mold plate (13), and also includes a second connecting portion (212) for connecting to a guide column (C) of a die-casting machine located above the fixed mold plate (13).

3. The three-plate mold according to claim 2, characterized in that: The first connecting portion (211) is located on the inner side relative to the guide column (C) along the length direction of the upper surface of the fixed template (13); the first connecting portion (211) at least partially extends upward to form a vertical portion (22); the end of the vertical portion (22) extends toward the guide column (C) to form a transverse portion (23) arranged above the guide column (C); the transverse portion (23) constitutes the second connecting portion (212).

4. The three-plate mold according to claim 3, characterized in that: A first reinforcing rib (24) is formed between the first connecting portion (211) and the vertical portion (22) and extends at least partially along the thickness direction of the fixed template (13). Similarly, a second reinforcing rib (25) is formed between the second connecting portion (212) and the vertical portion (22) and extends at least partially along the thickness direction of the fixed template (13).

5. The three-plate mold according to claim 4, characterized in that: A friction block (26) adapted to the guide column (C) is also provided between the second connecting portion (212) and the guide column (C); the friction block (26) is detachably connected to the second connecting portion (212).

6. The three-plate mold according to any one of claims 1 to 5, characterized in that: The stripping plate (12) is also provided with a guide member (3), which extends toward the movable plate (11) and is at least partially inserted into the movable plate (11), and the movable plate (11) and the fixed plate (13) are both provided with a slide groove (31) for the guide member (3) to slide.

7. The three-plate mold according to claim 6, characterized in that: The slide groove (31) is also provided with guide sleeves (32) located on both sides of the guide member (3) along the width direction.

8. The three-plate mold according to claim 6, characterized in that: The fixed template (13) is also provided with a locking tongue (41), and the movable template (11) is provided with a locking seat (42) engaged with the locking tongue (41), so that the movable template (11) and the fixed template (13) are in a locked state. Correspondingly, the guide member (3) at least partially extends toward the locking tongue (41) to form an action portion (33) that contacts the locking tongue (41). When the stripping plate (12) moves to a state of opening the mold with the fixed template (13), the action portion (33) forces the locking tongue (41) and the locking seat (42) to separate, so that the movable template (11) and the fixed template (13) are switched to an active state.

9. The three-plate mold according to claim 8, characterized in that: The locking tongue (41) is rod-shaped, and the end portion adjacent to the locking seat (42) at least partially extends toward the locking seat (42) to form a hook-shaped structure (411) that is engaged with the locking seat (42). Correspondingly, a rotating shaft (43) is also provided on the fixed template (13) for the locking tongue (41) to rotate around the rotating shaft (43), so that when the stripping plate (12) moves to a state of opening the mold with the fixed template (13), the action portion (33) forces the locking tongue (41) to rotate around the rotating shaft (43) in a direction away from the locking seat (42) to disengage from the locking seat (42).

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