Three-plate mold for casting

Abstract

The invention relates to a three-plate mold for casting, which comprises a fixed mold plate, a movable mold plate and a stripper plate, the stripper plate is provided with a feed port, the fixed mold plate is provided with an inflow port communicated with the feed port and a casting cavity, the three-plate mold for casting is characterized by further comprising a control mechanism, the control mechanism comprises an acting piece arranged on the stripper plate and a lock seat arranged on the movable mold plate, and the lock seat is provided with a locking hole. The mold further comprises a locking piece on the fixed mold plate, the locking piece is buckled with the lock seat through a hook-shaped structure, the acting piece extends towards the locking piece to form an acting part, and when the stripper plate advances to the state that the stripper plate and the fixed mold plate are opened to remove a material cake, the acting part forces the hook-shaped structure to be separated from the lock seat, and the fixed mold plate and the movable mold plate are switched to the movable state. The three-plate mold has the advantages that the three-plate mold is provided with the control mechanism, the control mechanism comprises the acting part, the lock seat and the locking part, the fixed mold plate and the movable mold plate are locked through the locking part and the lock seat, and when the stripper plate advances to the state of being opened from the fixed mold plate, the acting part forces the hook-shaped structure to be separated from the lock seat so as to avoid sequence errors during mold opening.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, in particular to a three-plate mold which is convenient for controlling the mold opening sequence. Background Art

[0002] The three-plate mold is a type of mold structure, which has three mold plates, namely the movable mold plate, the fixed mold plate and the stripping plate. For the specific structure of the three-plate mold, please refer to, for example, "A three-plate mold for aluminum die casting" disclosed in Chinese patent ZL202022724276.8.

[0003] Consistent with the two-plate mold, the casting cavity of the three-plate mold is formed by the combination of the movable mold plate and the fixed mold plate. The feed port for injecting molten metal is usually set on the stripper plate, and the fixed mold plate is provided with an inlet to connect the feed port and the casting cavity fluid, so as to form a casting in the casting cavity. Excess molten metal overflows to the feed port to form a cake connected to the casting, and the mold opening between the stripper plate and the fixed mold plate can naturally pull off the cake to facilitate the demolding of the casting.

[0004] However, despite the above advantages of three-plate molds, there are still the following defects in practical applications:

[0005] First, since the biscuit is connected to the casting, before the movable platen and the fixed platen are opened to remove the casting, it is necessary to first open the stripper plate and the fixed platen to separate the biscuit from the casting. However, the traditional three-platen mold only relies on the clamping force of the casting itself to achieve the above-mentioned mold opening sequence. Therefore, sometimes the movable platen and the fixed platen are separated first due to the excessive connection force between the biscuit and the casting, resulting in damage to the casting or even the mold.

[0006] Secondly, the movable mold plate, fixed mold plate and stripper plate need to repeatedly open and close the mold, so sometimes there will be deviation, especially in the case of long-term use, which will have a certain negative impact on the quality of the casting. In severe cases, the casting will be scrapped, resulting in an increase in the scrap rate of the casting.

[0007] Thirdly, the three-plate mold relies on the pulling force when the stripper plate and the fixed mold plate are separated to forcibly break the connection between the material cake and the inlet, but there is a risk of the material cake sticking to the stripper plate, causing the material cake to be stuck on the stripper plate. Operators are required to repair the mold to remove the stuck material cake, which is inefficient on the one hand, and on the other hand, due to the narrow distance between the stripper plate and the fixed mold plate, there is a risk of injury to operators during manual operation. Summary of the invention

[0008] The first 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.

[0009] The second technical problem to be solved by the present invention is to provide a three-plate formwork which can avoid offset between the formworks in view of the above-mentioned existing technical status.

[0010] The third technical problem to be solved by the present invention is to provide a three-plate mold capable of preventing the material cake from sticking to the stripping plate during the process of removing the material cake in response to the above-mentioned existing technical status.

[0011] The technical solution adopted by the present invention to solve the first technical problem is as follows: the three-plate mold for casting includes a movable mold plate that can move forward to be matched with a fixed mold plate to form a casting cavity, a stripper plate is also provided in front of the fixed mold plate, and the stripper plate is provided with a feed port for injecting molten metal, and correspondingly, the fixed mold plate is provided with an inlet port communicating with the casting cavity, and when the fixed mold plate and the stripper plate are in a state of being matched, the feed port and the inlet port are fluidically connected;

[0012] The invention is characterized in that it also includes a control mechanism for controlling the mold opening sequence, and the control mechanism includes:

[0013] An action member, disposed on the stripping plate so as to be able to move with the stripping plate;

[0014] A lock seat, arranged on the movable template;

[0015] A locking member connected to the fixed platen and comprising a hook structure engaged with the locking seat to lock the fixed platen and the movable platen;

[0016] The action member at least partially extends toward the locking member to form an action portion that interferes with the locking member, so that when the stripping plate advances to open the mold with the fixed mold plate to remove the material cake formed by the previous solidification of the molten metal at the feed inlet and the inlet, the action portion can force the hook structure to separate from the lock seat, thereby switching the fixed mold plate and the movable mold plate to the active state.

[0017] In order to achieve that the action part can separate the hook-shaped structure from the lock seat, preferably, a rotating shaft is provided on the fixed template for the locking member to rotate around the rotating shaft, and when the stripper plate advances to the state of opening the mold with the fixed template, the action part forces the locking member to rotate around the rotating shaft in the direction away from the lock seat, so as to separate the hook-shaped structure from the lock seat. By providing the rotating shaft, the locking member can be rotated in the direction close to the lock seat to engage the hook-shaped structure with the lock seat, or the locking member can be rotated in the direction away from the lock seat to separate the hook-shaped structure from the lock seat, and the action part can drive the locking member to rotate in the direction away from the lock seat when the stripper plate advances to the state of opening the mold with the fixed template.

[0018] Furthermore, in order to realize that the acting part can drive the locking member to rotate in a direction away from the lock seat, preferably, the locking member is located between the lock seat and the acting member and includes a first section extending from the rotating shaft toward the lock seat, and the end of the first section at least partially extends toward the lock seat to form the hook-like structure. Correspondingly, the locking member also includes a second section extending from the rotating shaft toward the stripping plate, and the second section conflicts with the acting part. The locking member is arranged between the lock seat and the acting member, and the locking member includes a first section located on one side of the rotating shaft along the length direction and a second section located on the other side, and the lock seat is engaged with the hook-like structure on the first section, and the acting member is in contact with the second section. When the acting member applies a force to the second section, the first section will rotate around the rotating shaft in a direction away from the lock seat, so that the hook-like structure is separated from the lock seat.

[0019] In order to convert the power of the action part forward into the power of the locking member to rotate, preferably, the second section is provided with an inclined surface that at least partially extends forward and tilts toward the action part, so that when the stripper plate advances to the state of opening the mold with the fixed mold plate, the inclined surface and the action part collide to convert the power of the action part forward into the power of the locking member to rotate. Since the action member is connected to the stripper plate, the action part can move forward with the stripper plate, and through the above-mentioned inclined surface cooperating with the rotating shaft, the power of the action part forward can be converted into the power of the locking member to rotate around the rotating shaft, thereby realizing the function of the above-mentioned action part forcing the hook structure to separate from the lock seat.

[0020] In order to facilitate maintenance of the action member, preferably, the action portion is formed by at least a portion of the action member protruding toward the second section, and the action portion is detachably connected to the action member. Correspondingly, at least a portion of the action member is recessed to form a mounting portion for mounting the action portion. Since the action portion and the locking member are in a conflicting relationship and there is friction between the two, the action portion will be worn after long-term use. If it is not replaced, the normal operation of the control mechanism will be affected. Compared with replacing the entire action member, in this solution, the action portion is set to be detachably connected to the action member, so that only the action portion can be replaced, which reduces costs and is more convenient for maintenance.

[0021] In order to realize the ability of the locking member to reset, preferably, the fixed template is also provided with an elastic mechanism on the other side of the second section opposite to the action section, and the elastic mechanism conflicts with the second section, so that the locking member always has a tendency to rotate around the rotation axis toward the direction close to the lock seat. Considering that when the stripping plate retreats and re-closes with the fixed template, the hook structure needs to be engaged with the lock seat again, that is, the locking member needs to have the ability to reset, for this purpose, the elastic mechanism is provided to conflict with the second section, so that the locking member always has a tendency to rotate around the rotation axis toward the direction close to the lock seat. In addition, according to actual needs, an elastic member such as a torsion spring is provided on the rotation axis to achieve the effect of resetting the locking member, but the method of direct conflict through the elastic mechanism is more reliable and can also play a certain limiting role at the same time.

[0022] In order to solve the second technical problem, preferably, the action member further includes a guide portion, the guide portion extends from the stripper plate toward the movable template and is at least partially inserted into the movable template, and correspondingly, the fixed template and the movable template are at least partially recessed to form a slide groove for the guide portion to slide. The guide portion cooperates with the slide groove, and the guide portion can move in the slide groove, providing a guide for the relative movement between the fixed template, the movable template and the stripper plate, thereby avoiding displacement between the templates.

[0023] Furthermore, in order to improve the stability of the guide part when it plays a guiding role, preferably, the slide groove is further provided with guide sleeves located on both sides of the guide part along the width direction. The guide sleeves are provided on both sides of the guide part, on the one hand, so that the guide part has a more stable guiding role when the guide part slides in the slide groove, and on the other hand, it can prevent the guide sleeve from directly contacting the fixed template and the movable template, thereby avoiding the wear of the fixed template and the movable template, and at the same time reducing the wear of the guide part.

[0024] In order to limit the distance that the stripper plate moves forward, preferably, the surface of the action member at least partially protrudes toward the movable template to form a convex portion, and correspondingly, a limiter is provided in front of the convex portion. When the stripper plate moves forward to the state of opening the mold with the fixed template, the convex portion and the limiter abut against each other to limit the stripper plate from continuing to move forward. Such a design is made in consideration of the limited space for accommodating each template in a common casting equipment. Therefore, if the distance between the stripper plate and the fixed template is too large, sometimes the remaining space will be insufficient for the fixed template and the movable template to open the mold to demold the casting. For this reason, the convex portion and the limiter are required to limit the distance between the stripper plate and the fixed template.

[0025] In order to solve the third technical problem, preferably, the action member extends toward the stripping plate to form a connection portion for connecting to the stripping plate, and correspondingly, the stripping plate includes an anti-sticking mold mechanism adjacent to the connection portion, and the anti-sticking mold mechanism includes a driving source and a rod connected to the driving source, so as to drive the rod to push the material cake to prevent the material cake from sticking to the stripping plate. Through the anti-sticking mold mechanism adjacent to the connection portion, the material cake can be pushed to fall off when the stripping plate and the fixed mold plate are in an open state, that is, when the material cake has been pulled apart, thereby preventing the material cake from sticking to the stripping plate.

[0026] Compared with the prior art, the advantages of the present invention are that a control mechanism for controlling the mold opening sequence is provided, the control mechanism includes an acting member, a locking seat and a locking member, the fixed mold plate and the movable mold plate are in a locked state through the locking member and the locking seat, and when the stripping plate advances to the state of mold opening with the fixed mold plate, the acting part can force the hook structure to separate from the locking seat, and then switch the fixed mold plate and the movable mold plate to an active state, thereby avoiding sequence errors when opening the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a three-plate mold in an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the explosion structure of the control mechanism in an embodiment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of a control mechanism in an embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the working parts in the embodiment of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the elastic mechanism in an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the structure of the anti-sticking mold mechanism in an embodiment of the present invention;

[0033] Figure 7 It is a schematic diagram of the state of the three-plate mold in the initial state in the embodiment of the present invention;

[0034] Figure 8 It is a schematic diagram of the state of the control mechanism in the embodiment of the present invention in the initial state;

[0035] Fig. 9 It is a schematic diagram of a state in which the three-plate mold is in a mold opening state in an embodiment of the present invention;

[0036] Fig.10 Schematic diagram of the control mechanism in the mold opening state in the embodiment of the present invention. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with specific embodiments.

[0038] like Figures 1 to 10 The preferred embodiment of the present invention is shown in FIG. Figures 1-2 As shown, the three-plate mold for casting in this embodiment includes a movable mold plate 12 that can move forward to be matched with the fixed mold plate 11 to form a casting cavity. A stripper plate 13 is also provided in front of the fixed mold plate 11, and the stripper plate 13 is provided with a feed port 131 for injecting molten metal. Correspondingly, the fixed mold plate 11 is provided with an inlet port connected to the casting cavity. When the fixed mold plate 11 and the stripper plate 13 are matched, the feed port 131 and the inlet port are fluidically connected. The three-plate mold also includes a control mechanism 2 for controlling the mold opening sequence, the control mechanism 2 includes an action member 21 provided on the stripper plate 13 so as to be able to move with the stripper plate 13 and a lock seat 22 provided on the movable mold plate 12, and also includes a locking member 23 connected to the fixed mold plate 11, the locking member 23 includes a hook structure 231 engaged with the lock seat 22 to lock the fixed mold plate 11 and the movable mold plate 12. The action member 21 at least partially extends toward the locking member 23 to form an action portion 211 that interferes with the locking member 23, so that when the stripping plate 13 moves forward to open the mold with the fixed mold plate 11 to remove the material cake A formed by the solidification of the previous molten metal at the feed port 131 and the inlet, the action portion 211 can force the hook structure 231 to separate from the lock seat 22, thereby switching the fixed mold plate 11 and the movable mold plate 12 to the active state.

[0039] Regarding the specific structure of each component in the control mechanism 2, such as Figure 3As shown, the fixed die plate 11 is provided with a rotating shaft 24 for the locking member 23 to rotate around the rotating shaft 24. When the stripper plate 13 advances to the state of opening the mold with the fixed die plate 11, the action part 211 forces the locking member 23 to rotate around the rotating shaft 24 in the direction away from the lock seat 22, so that the hook structure 231 is separated from the lock seat 22. By providing the rotating shaft 24, the locking member 23 can be rotated in the direction close to the lock seat 22 to engage the hook structure 231 with the lock seat 22, or the locking member 23 can be rotated in the direction away from the lock seat 22 to separate the hook structure 231 from the lock seat 22, and the action part 211 can drive the locking member 23 to rotate in the direction away from the lock seat 22 when the stripper plate 13 advances to the state of opening the mold with the fixed die plate 11. Specifically, the locking member 23 is located between the lock seat 22 and the action member 21 and includes a first section 232 extending from the rotating shaft 24 toward the lock seat 22, and the end of the first section 232 at least partially extends toward the lock seat 22 to form a hook structure 231. Correspondingly, the locking member 23 also includes a second section 233 extending from the rotating shaft 24 toward the stripping plate 13, and the second section 233 conflicts with the action member 211. The locking member 23 is arranged between the lock seat 22 and the action member 21. The locking member 23 includes a first section 232 located on one side of the rotating shaft 24 along the length direction and a second section 233 located on the other side. The lock seat 22 is engaged with the hook structure 231 on the first section 232, and the action member 21 is in contact with the second section 233. When the action member 21 applies a force to the second section 233, the first section 232 will rotate around the rotating shaft 24 in a direction away from the lock seat 22, so that the hook structure 231 is separated from the lock seat 22.

[0040] Considering the need to convert the power of the action part 211 forward into the power of the locking member 23 rotating, as shown in FIG. Figure 3As shown, the second section 233 is provided with an inclined surface 234 that at least partially extends forward and is inclined toward the action portion 211, so that when the stripper plate 13 advances to the state of opening the mold with the fixed mold plate 11, the inclined surface 234 and the action portion 211 are in conflict to convert the power of the action portion 211 to move forward into the power of the locking member 23 to rotate, thereby realizing the function of the action portion 211 forcing the hook structure 231 to separate from the lock seat 22. The action portion 211 is formed by the action member 21 at least partially protruding toward the second section 233, and the action portion 211 is detachably connected to the action member 21, and correspondingly, the action member 21 is at least partially recessed to form a mounting portion 212 for mounting the action portion 211. Since the action part 211 and the locking member 23 are in conflict with each other and there is friction between the two, the action part 211 will wear out after long-term use. If it is not replaced, it will affect the normal operation of the control mechanism 2. Compared with replacing the action part 21 as a whole, the action part 211 in this solution is configured to be detachably connected to the action part 21, so that only the action part 211 can be replaced, which reduces costs and is more convenient for maintenance. In addition, the control mechanism 2 also needs to consider the problem of resetting the locking member 23. For this purpose, the fixed template 11 is located on the other side of the second section 233 opposite to the action part 211. The elastic mechanism 25 conflicts with the second section 233, so that the locking member 23 always has a tendency to rotate around the rotation axis 24 in a direction close to the lock seat 22. Figure 5 As shown, the elastic mechanism 25 in this embodiment includes a base 251, a spring 252 and a reset rod 253, wherein the reset rod 253 is subjected to the force of the spring 252 to contact with the second section 233. The direct contact through the elastic mechanism 25 is more reliable and can also play a certain limiting role.

[0041] Since the control mechanism 2 also needs to solve the problem of avoiding the deviation of each template, such as Figure 4As shown, the action member 21 also includes a guide portion 213, which extends from the stripper plate 13 toward the movable template 12 and is at least partially inserted into the movable template 12. Correspondingly, the fixed template 11 and the movable template 12 are at least partially recessed to form a slide groove 26 for the guide portion 213 to slide. Through the cooperation between the guide portion 213 and the slide groove 26, the guide portion 213 can move in the slide groove 26, providing a guiding effect for the relative movement between the fixed template 11, the movable template 12 and the stripper plate 13, thereby avoiding offset between the templates. The slide groove 26 is also provided with guide sleeves 261 located on both sides of the guide portion 213 along the width direction. Guide sleeves 261 are provided on both sides of the guide portion 213, on the one hand, to make the guide portion 213 have a more stable guiding effect when the guide portion 213 slides in the slide groove 26, and on the other hand, to prevent the guide sleeves 261 from directly contacting the fixed template 11 and the movable template 12, thereby avoiding the wear of the fixed template 11 and the movable template 12, and at the same time reducing the wear of the guide portion 213. The surface of the action member 21 facing the movable template 12 is at least partially protruded to form a convex portion 214, and correspondingly, a limiter 27 is provided in front of the convex portion 214. When the stripper plate 13 advances to the state of opening the mold with the fixed template 11, the convex portion 214 abuts against the limiter 27 to limit the stripper plate 13 from continuing to advance. This design is based on the consideration that the space for accommodating each mold plate in a typical casting equipment is limited. Therefore, if the distance between the stripper plate 13 and the fixed mold plate 11 is too large, sometimes the remaining space will be insufficient for the fixed mold plate 11 and the movable mold plate 12 to open the mold and demold the casting. Therefore, it is necessary to limit the distance between the stripper plate 13 and the fixed mold plate 11 by means of the protrusion 214 and the limit member 27.

[0042] Finally, it is also necessary to prevent the cake A from sticking to the stripper plate 13. The action member 21 extends toward the stripper plate 13 to form a connection portion 215 for connecting to the stripper plate 13. Correspondingly, the stripper plate 13 includes an anti-sticking mechanism 3 adjacent to the connection portion 215. The anti-sticking mechanism 3 includes a driving source 31 and a rod 32 connected to the driving source 31, so as to drive the rod 32 to push the cake A to prevent the cake A from sticking to the stripper plate 13. Through the anti-sticking mechanism 3 adjacent to the connection portion 215, when the stripper plate 13 and the fixed mold plate 11 are in the open state, that is, when the cake A has been pulled apart, the cake A is pushed to make it fall off, thereby preventing the cake A from sticking to the stripper plate 13.

[0043] The specific use process of the three-plate mold in this embodiment is as follows:

[0044] like Figures 7-8 As shown, at this time, the three-plate mold is in the initial state, that is, the mold closing state, the hook structure 231 is engaged with the lock seat 22, and the protrusion 214 and the limiter 27 are at a preset distance; as the stripper plate 13 moves forward, as shown Figures 9-10As shown, the action portion 211 conflicts with the inclined surface 234, forcing the locking member 23 to rotate in a direction away from the lock seat 22, so that the hook structure 231 is separated from the lock seat 22, so as to switch the fixed template 11 and the movable template 12 to the active state, as shown in FIG. Fig.10 As shown, at this time, the protrusion 214 conflicts with the limiting member 27 to prevent the stripping plate 13 from continuing to move forward.

Claims

1. A three-plate mold for casting, comprising a movable plate (12) capable of advancing to engage with a fixed plate (11) to form a casting cavity, a stripper plate (13) being provided in front of the fixed plate (11), and the stripper plate (13) being provided with a feed port (131) for injecting molten metal, and correspondingly, the fixed plate (11) being provided with an inflow port communicating with the casting cavity, and when the fixed plate (11) and the stripper plate (13) are in engagement with each other, the feed port (131) and the inflow port are in fluid communication; It is characterized in that It also includes a control mechanism (2) for controlling the mold opening sequence, and the control mechanism (2) includes: An action member (21) is arranged on the stripping plate (13) so as to be able to move with the stripping plate (13); A lock seat (22) is arranged on the movable plate (12); A locking member (23) connected to the fixed die plate (11), comprising a hook-shaped structure (231) engaged with the locking seat (22) to lock the fixed die plate (11) and the movable die plate (12); The action member (21) at least partially extends toward the locking member (23) to form an action portion (211) that interferes with the locking member (23), so that when the stripping plate (13) advances to open the mold with the fixed mold plate (11) to remove the material cake (A) previously formed by solidification of the molten metal at the feed port (131) and the inlet, the action portion (211) can force the hook structure (231) to separate from the lock seat (22), thereby switching the fixed mold plate (11) and the movable mold plate (12) to an active state.

2. The three-plate mold according to claim 1, characterized in that: The fixed mold plate (11) is provided with a rotating shaft (24) for the locking member (23) to rotate around the rotating shaft (24). When the stripping plate (13) advances to a state of mold opening with the fixed mold plate (11), the action portion (211) forces the locking member (23) to rotate around the rotating shaft (24) in a direction away from the locking seat (22), thereby separating the hook-shaped structure (231) from the locking seat (22).

3. The three-plate mold according to claim 2, characterized in that: The locking member (23) is located between the lock seat (22) and the action member (21) and includes a first section (232) extending from the rotating shaft (24) toward the lock seat (22), and the end of the first section (232) at least partially extends toward the lock seat (22) to form the hook structure (231). Correspondingly, the locking member (23) also includes a second section (233) extending from the rotating shaft (24) toward the stripping plate (13), and the second section (233) is in conflict with the action member (211).

4. The three-plate mold according to claim 3, characterized in that: The second section (233) is provided with an inclined surface (234) which at least partially extends forward and is inclined toward the action portion (211), so that when the stripping plate (13) advances to a state of opening the mold with the fixed mold plate (11), the inclined surface (234) and the action portion (211) come into contact with each other to convert the power of the action portion (211) moving forward into the power of rotation of the locking member (23).

5. The three-plate mold according to claim 4, characterized in that: The action portion (211) is formed by at least partially protruding the action member (21) toward the second section (233); the action portion (211) is detachably connected to the action member (21); correspondingly, the action member (21) is at least partially recessed to form a mounting portion (212) for mounting the action portion (211).

6. The three-plate mold according to claim 4, characterized in that: The fixed template (11) is also provided with an elastic mechanism (25) on the other side of the second section (233) opposite to the action section (211), and the elastic mechanism (25) is in conflict with the second section (233), so that the locking member (23) always has a tendency to rotate around the rotation axis (24) in a direction close to the lock seat (22).

7. The three-plate mold according to any one of claims 1 to 6, characterized in that: The action member (21) also includes a guide portion (213), which extends from the stripping plate (13) toward the movable template (12) and is at least partially inserted into the movable template (12). Correspondingly, the fixed template (11) and the movable template (12) are at least partially recessed to form a sliding groove (26) for the guide portion (213) to slide.

8. The three-plate mold according to claim 7, characterized in that: The slide groove (26) is also provided with guide sleeves (261) located on both sides of the guide portion (213) along the width direction.

9. The three-plate mold according to claim 8, characterized in that: The surface of the active member (21) at least partially protrudes toward the movable template (12) to form a convex portion (214), and correspondingly, a limiting member (27) is provided in front of the convex portion (214). When the stripping plate (13) moves forward to a state of opening the mold with the fixed template (11), the convex portion (214) abuts against the limiting member (27) to limit the stripping plate (13) from continuing to move forward.

10. The three-plate mold according to any one of claims 1 to 6, characterized in that: The action member (21) extends toward the stripping plate (13) to form a connection portion (215) for connecting to the stripping plate (13). Correspondingly, the stripping plate (13) includes an anti-sticking mold mechanism (3) adjacent to the connection portion (215). The anti-sticking mold mechanism (3) includes a driving source (31) and a rod (32) connected to the driving source (31), thereby driving the rod (32) to push the material cake (A) to prevent the material cake (A) from sticking to the stripping plate (13).

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