Slide block type secondary ejection mold

Abstract

The application relates to a slider type secondary ejection die, belonging to the die field, which comprises a movable die assembly and an ejection mechanism. The movable die assembly comprises a base, a mounting plate, and a movable die frame. The mounting plate is fixed on the base, and a movable die block is fixed on the mounting plate. The movable die block penetrates through the movable die frame, and the movable die frame slides relative to the mounting plate. The ejection mechanism comprises a ejector pin plate, an ejector pin rod, and a clutch assembly. The ejector pin plate slides relative to the base, and the ejector pin rod is connected to the ejector pin plate. The clutch assembly comprises a clutch sliding block and a transmission guide rod. A transmission sliding channel is arranged on the movable die frame. One end of the transmission guide rod is fixedly connected to the ejector pin plate, and the other end extends into the transmission sliding channel. The clutch sliding block slides on the movable die frame and is located on one side of the transmission guide rod. The sliding direction is perpendicular to the extension direction of the transmission guide rod. The transmission guide rod selectively abuts against the clutch sliding block. The application selectively establishes the synchronous movement relationship between the ejector pin plate and the movable die frame through the clutch sliding block, realizes the synchronous movement or not of the two, and realizes secondary ejection during die opening.

Description

Technical Field

[0001] This application relates to the field of molds, and in particular to a slider-type secondary ejection mold. Background Technology

[0002] In die casting production, we often encounter die casting parts with deep cavities, thin walls, or special appearance requirements, where ejector pin marks cannot be arranged or are not allowed on the concave surface of the part. For such parts, die casting molds with secondary ejection mechanisms are usually designed to ensure part production.

[0003] In related technologies, the mold adopts a lever-type secondary ejection mechanism, such as the utility model patent with announcement number CN219522932U. The significant feature of this type of mechanism is that a lever and another ejector plate are set between the ejector pin fixing plate and the moving mold frame plate. The process of the two ejector pin fixing plates moving synchronously is the first ejection process. When the lever is triggered to make the two ejector pin fixing plates have relative displacement, the second ejection stage is entered, thereby realizing secondary ejection.

[0004] In the above structure, two ejector pin fixing plates or similar structures are essential technical features for achieving secondary ejection. This will greatly increase the thickness requirement of the mold at the ejector pin fixing plate, causing some problems in the compatibility of the mold and the die-casting machine. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a slider-type secondary ejection mold.

[0006] The sliding block type secondary ejection mold provided in this application adopts the following technical solution:

[0007] A slider-type secondary ejection mold includes a moving mold assembly and an ejection mechanism. The moving mold assembly includes a base, a mounting plate, and a moving mold frame. The mounting plate is fixedly mounted on the base. A moving module is mounted on the side of the mounting plate opposite to the base. A moving template is mounted on the moving mold frame. The moving template has a forming hole for the moving module to pass through. The moving mold frame slides relative to the mounting plate. The ejection mechanism includes an ejector plate and an ejector rod. The ejector plate slides relative to the base. The ejector rod is connected to the ejector plate. Ejector holes for the ejector rod to pass through are provided on the mounting plate, the moving mold frame, and the moving template. The ejection mechanism also includes a clutch assembly. The clutch assembly includes a clutch slider and a transmission guide rod. A transmission slide is provided on the moving mold frame. One end of the transmission guide rod is fixedly connected to the ejector plate, and the other end extends into the transmission slide. The clutch slider is slidably disposed on the moving mold frame and located on one side of the transmission guide rod. The sliding direction is perpendicular to the extension direction of the transmission guide rod. The transmission guide rod selectively abuts against the clutch slider.

[0008] By adopting the above technical solution, when the clutch slider is abutted by the transmission guide rod and receives a thrust towards the cavity side, it can transmit this thrust to the moving mold frame. The moving mold frame and the ejector plate move synchronously to achieve the first ejection. When the clutch slider slides to change its position and no longer receives the thrust from the transmission guide rod, it and the moving mold frame are no longer affected by the movement of the transmission guide rod or the ejector plate. The ejector pins on the ejector plate and the moving mold frame undergo relative displacement to achieve the second ejection. This reduces the need for additional ejector plates and simplifies the spatial structure and dimensions of the mold.

[0009] Preferably, the clutch assembly further includes a limiting member, which is mounted on the mounting plate and selectively abuts against the end of the clutch slider away from the transmission guide rod.

[0010] By adopting the above technical solution, the limiting component can perform the required function under the coordination of spatial conditions during the mold opening process.

[0011] Preferably, the clutch slider is provided with a force-receiving inclined surface and a spring-back inclined surface, the transmission guide rod is provided with a force-transmitting inclined surface, the force-transmitting inclined surface and the force-receiving inclined surface are parallel, the limiting member is provided with a reset inclined surface, the reset inclined surface and the spring-back inclined surface are parallel, when the force-transmitting inclined surface and the force-receiving inclined surface abut and coincide, the side wall of the clutch slider contacts the side wall of the limiting member, when the reset inclined surface and the spring-back inclined surface abut and coincide, the side wall of the clutch slider contacts the side wall of the transmission guide rod.

[0012] By adopting the above technical solution, during the mold opening and closing process, the contact between the inclined surfaces can cause the transmission guide rod or limiting component to generate a lateral thrust on the clutch slider, so that the clutch slider can transmit the thrust to the moving mold frame while also changing its own position, thus achieving the "clutch" action conversion.

[0013] Preferably, the transfer slide is provided on the side wall of the moving mold frame, the clutch assembly is provided in two sets and is located on opposite sides of the moving mold assembly, and the limiting member is connected to the side wall of the mounting plate.

[0014] By adopting the above technical solution, it is easier for operators to observe the working status of each part of the clutch assembly during the mold opening and closing process.

[0015] Preferably, the moving mold frame includes a main body and a grooving block. The grooving block is detachably mounted on the main body. A control groove is formed on the side wall of the main body. The grooving block is located in the control groove. The clutch slider moves within the control groove. The grooving block is located beside the clutch slider. An anti-detachment groove is formed between the grooving block and the bottom of the control groove. The length direction of the anti-detachment groove is parallel to the sliding direction of the clutch slider. An anti-detachment protrusion is fixedly connected to the clutch slider. The anti-detachment protrusion is located in the anti-detachment groove.

[0016] By adopting the above technical solution, when the surface of the clutch slider is worn and can no longer be used, the groove block can be removed to release the space restriction of the anti-disengagement groove on the anti-disengagement protrusion, and the clutch slider can be taken out from the control groove.

[0017] Preferably, the limiting member is slidably connected to the mounting plate, and the sliding direction is consistent with the sliding direction of the ejector plate relative to the mounting plate. The clutch assembly also includes a control member for controlling the position of the limiting member relative to the mounting plate.

[0018] By adopting the above technical solution, the relative positional relationship between the reset slope and the springback slope on the limiting component is the determining factor for the mold opening stroke of the first ejection and the starting time of the second ejection. The sliding setting of the limiting component is intended to achieve the adjustability of the above two factors.

[0019] Preferably, the control component is a control screw, which is rotatably connected to the mounting plate. The axis of the control screw is parallel to the sliding direction of the limiting component. The control screw is threadedly connected to the limiting component, and the side wall of the limiting component is in contact with the side wall of the moving mold frame or the mounting plate.

[0020] By adopting the above technical solution, when the control screw rotates, the threaded pair transmission can drive the limiting component to move along the mold opening and closing direction.

[0021] Preferably, the control screw has an anti-rotation hole along its own radial direction, and an anti-rotation bolt is threadedly connected to the mounting plate, with the end of the anti-rotation bolt inserted into the anti-rotation hole.

[0022] By adopting the above technical solution, when the end of the anti-rotation bolt is inserted into the anti-rotation hole, the control screw cannot rotate, and the position of the limiting component is also relatively stable.

[0023] Preferably, the control screw is provided with a plurality of marking scale lines, and the arrangement direction of the plurality of marking scale lines is consistent with the length direction of the control screw.

[0024] By adopting the above technical solution, the specific position of the limiting component can be determined by marking the scale line and the relative position of the limiting component, thereby determining the specific stroke and other relevant parameters of the first mold opening.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By setting up the clutch assembly, when the clutch slider is abutted by the transmission guide rod and receives a thrust towards the cavity, it can transmit this thrust to the moving mold frame. The moving mold frame and the ejector plate move synchronously, which is the first ejection. When the clutch slider slides to change its position and no longer receives a thrust from the transmission guide rod, it and the moving mold frame are no longer affected by the movement of the transmission guide rod or the ejector plate. The ejector pins on the ejector plate and the moving mold frame undergo relative displacement, which is the second ejection. This reduces the need for additional ejector plates and simplifies the spatial structure and dimensions of the mold.

[0027] 2. By adjusting the position of the limiting component relative to the mounting plate and the setting of the control component, the limiting component can change its position relative to the mounting plate in the mold opening direction, thereby changing the timing of the clutch slider movement during the mold opening process. That is, the stroke of the first ejection and the timing of the second ejection can both be adjusted. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the workpiece in the closed state of the slider-type secondary ejection mold, as shown in Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the mold structure used in Embodiment 1 of this application to illustrate the first ejection.

[0030] Figure 3 This is a schematic diagram of the mold structure used to illustrate the second ejection in Embodiment 1 of this application.

[0031] Figure 4 This is an exploded view of the clutch slider installation structure in Embodiment 1 of this application.

[0032] Figure 5 This is a schematic diagram illustrating the structure of the clutch assembly in Embodiment 2 of this application.

[0033] Figure 6 yes Figure 5 A magnified view of part A in the middle.

[0034] Explanation of reference numerals in the attached drawings: 1. Workpiece; 2. Moving mold assembly; 21. Base; 22. Mounting plate; 23. Moving mold frame; 231. Main body; 232. Grooving block; 2321. Anti-detachment groove; 233. Transmission slide; 234. Control groove; 24. Moving mold plate; 241. Forming hole; 242. Overflow groove; 25. Moving module; 26. Ejector hole; 3. Ejection mechanism; 31. Ejector plate; 32. Ejector rod; 4. Clutch assembly; 41. Clutch slider; 412. Force-bearing inclined surface; 413. Springback inclined surface; 414. Anti-detachment protrusion; 42. Transmission guide rod; 421. Force-transmitting inclined surface; 43. Limiting component; 431. Reset inclined surface; 44. Control screw; 441. Anti-rotation hole; 442. Marking scale line; 45. Anti-rotation bolt. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0036] Example 1:

[0037] This application discloses a slider-type secondary ejection mold, such as... Figure 1 As shown, it includes a moving mold assembly 2 and an ejection mechanism 3. The moving mold assembly 2 is located on the side where the formed workpiece 1 is away from the die head of the die casting machine. After the mold is opened, the workpiece 1 remains on the moving mold assembly 2. The ejection mechanism 3 is used to remove the formed workpiece 1 from the moving mold assembly 2 during the mold opening process.

[0038] like Figure 1 As shown, the moving mold assembly 2 includes a base 21, a mounting plate 22, and a moving mold frame 23. The mounting plate 22 is fixedly mounted on the base 21. The moving mold frame 23 is located on the side of the mounting plate 22 away from the base 21. A moving mold plate 24 is mounted on the side of the moving mold frame 23 away from the mounting plate 22. A moving module 25 is mounted on the mounting plate 22. The moving module 25 passes through the moving mold frame 23 and the moving mold plate 24 in sequence. A forming hole 241 is opened on the moving mold plate 24 for the moving module 25 to pass through. After passing through the moving mold plate 24, the moving module 25 protrudes relative to the surface of the moving mold plate 24. The workpiece 1 to be die-cast is basin-shaped. The workpiece 1 is located on the moving mold plate 24, with the basin opening facing the base 21. The inner sidewall of the basin is in contact with the surface of the moving module 25, and the edge of the basin opening is in contact with the plate surface of the moving mold plate 24. An overflow groove 242 is also opened on the surface of the moving mold plate 24 around the moving module 25 for the die-casting solidified material to overflow from the cavity under pressure.

[0039] like Figure 1 As shown, the ejection mechanism 3 includes an ejector plate 31 and multiple ejector rods 32. The ejector plate 31 is located inside the base 21 and slides relative to the base 21 and the mounting plate 22, with the sliding direction consistent with the mold opening and closing direction. One end of the ejector rod 32 is fixedly connected to the ejector plate 31, and the other end passes through the mounting plate 22, the moving mold frame 23, and the moving mold plate 24 in sequence. Ejector holes 26 for the ejector rods 32 to pass through are provided on the mounting plate 22, the moving mold frame 23, and the moving mold plate 24. The ejector holes 26 on the moving mold plate 24 are located at the bottom of the overflow groove 242.

[0040] like Figure 1 and 2As shown, the ejection mechanism 3 also includes a clutch assembly 4, which controls whether the ejector plate 31 and the moving mold frame 23 move synchronously to achieve secondary ejection. Two clutch assemblies 4 are provided, located on opposite sides of the moving mold assembly 2. Each clutch assembly 4 includes two clutch sliders 41, two transmission guide rods 42, and a limiting member 43. Control slots 234 are respectively opened on both sides of the moving mold frame 23. The limiting member 43 is bolted to the side wall of the mounting plate 22, with one end of the limiting member 43 extending into the middle of the control slot 234. The two clutch sliders 41 slide relative to the moving mold base within the control slot 234, and are located on opposite sides of the limiting member 43, with the sliding direction perpendicular to the mold opening and closing direction. One end of the transfer guide rod 42 is installed on the ejector plate 31, and its length direction is consistent with the length direction of the ejector rod 32; the moving mold frame 23 and the control groove 234 are respectively provided with transfer channels, and the length direction of the transfer channels is consistent with the opening and closing direction of the mold. The end of a single transfer guide rod 42 away from the ejector plate 31 is inserted into a transfer channel.

[0041] like Figure 1 and 2 As shown, each clutch slider 41 is held by a limiting member 43 and a transmission guide rod 42. The clutch slider 41 has a force-receiving inclined surface 412 and a springback inclined surface 413 at its two ends facing the mounting plate 22. The transmission guide rod 42 has a force-transmitting inclined surface 421 on its side facing the clutch slider 41, and the force-transmitting inclined surface 421 and the force-receiving inclined surface 412 are parallel. The limiting member 43 has a reset inclined surface 431 on its side facing the clutch slider 41, and the reset inclined surface 431 is parallel to the springback inclined surface 413. In the mold-closed state, the moving mold frame 23 is in contact with the mounting plate 22, the force-transmitting inclined surface 421 and the force-receiving inclined surface 412 abut and overlap, the sidewall of the clutch slider 41 contacts the sidewall of the limiting member 43, and the reset inclined surface 431 is located on the side of the springback inclined surface 413 away from the mounting plate 22.

[0042] like Figure 1 , 2As shown in Figure 3, when the mold is opened, the ejector plate 31 and the transmission guide rod 42 and ejector rod 32 on it all move toward the cavity. The transmission guide rod 42 applies a pushing force to the clutch slider 41 through the force transmission inclined surface 421. The clutch slider 41 transmits the pushing force to the moving mold frame 23. The moving mold frame 23 then carries the moving mold plate 24 and moves synchronously with the ejector plate 31 and each ejector rod 32, so that the workpiece 1 and the die-cast solidified material are separated from the moving mold frame 25, realizing the first ejection. When the clutch slider 41 moves to contact the springback slope 413 and the reset slope 431, the force of the transmission guide rod 42 on the clutch slider 41, in the sliding direction of the clutch slider 41, pushes the clutch slider 41 to move until the reset slope 431 abuts and overlaps with the springback slope 413. At this time, the side wall of the clutch slider 41 contacts the side wall of the transmission guide rod 42, that is, the transmission guide rod 42 cannot transmit the movement trend in the mold opening and closing direction to the clutch slider 41. The clutch slider 41 and the moving mold frame 23 no longer move relative to the mounting plate 22. The ejector plate 31, ejector rod 32 and transmission guide rod 42 continue to move, and each ejector rod 32 pushes the workpiece 1 and the die casting solidified material away from the moving mold plate 24 to achieve the second ejection. Since the top hole 26 on the moving pattern plate 24 is located inside the overflow groove 242, the force application point of the ejector pin 32 is located on the die-cast solidified material at the overflow groove 242, and does not contact the surface of the workpiece 1, it hardly affects the surface forming quality of the workpiece 1 itself.

[0043] like Figure 1 and 4 As shown, the transfer slide 233 and control groove 234 are located on the side of the moving mold frame 23, making it easy for the operator to observe the working status of each part of the clutch assembly 4 during the mold opening and closing process. The moving mold frame 23 includes a main body 231 and a grooving block 232. The control groove 234 and the transfer slide 233 are both formed on the main body 231. The grooving block 232 is located in the control groove 234 and is detachably connected to the main body 231 by bolts. The side of the clutch slider 41 away from the mounting plate 22 contacts the side wall of the grooving block. An anti-detachment groove 2321 is formed between the grooving block 232 and the bottom of the control groove 234. The length direction of the anti-detachment groove 2321 is consistent with the sliding direction of the clutch slider 41. An anti-detachment protrusion 414 is integrally formed on the clutch slider 41 and is located in the anti-detachment groove 2321. When the surface of the clutch slider 41 is worn and can no longer be used, remove the groove block and release the space restriction of the anti-disengagement groove 2321 on the anti-disengagement protrusion 414, and the clutch slider 41 can be taken out from the control groove 234.

[0044] Example 2:

[0045] like Figure 5 and 6As shown, the difference from Embodiment 1 is that in this embodiment, the limiting member 43 is slidably connected to the mounting plate 22, and the sliding direction is consistent with the mold opening and closing direction. The clutch assembly 4 also includes a control member for controlling the position of the limiting member 43 relative to the mounting plate 22. The relative positional relationship between the reset slope 431 and the springback slope 413 on the limiting member 43 is the determining factor for the mold opening stroke of the first ejection and the starting time of the second ejection. The sliding setting of the limiting member 43 is intended to achieve the adjustability of the above two factors. The side wall of the limiting member 43 is in contact with the side wall of the moving mold frame 23 and the mounting plate 22. The control member is a control screw 44, which is rotatably connected to the mounting plate 22. The axis of the control screw 44 is parallel to the sliding direction of the limiting member 43, and the control screw 44 is threadedly connected to the limiting member 43. When the control screw 44 rotates, the threaded pair transmission can drive the limiting member 43 to move along the mold opening and closing direction.

[0046] like Figure 5 and 6 As shown, an anti-rotation bolt 45 is threaded onto the mounting plate 22. An anti-rotation hole 441 is formed radially on the control screw 44. The axial direction of the anti-rotation bolt 45 is the radial direction of the control screw 44. When the control screw 44 rotates to the point where the anti-rotation hole 441 is coaxial with the anti-rotation bolt 45, the end of the anti-rotation bolt 45 can be inserted into the anti-rotation hole 441. At this point, the control screw 44 cannot rotate, and the position of the limiting member 43 is relatively stable. The anti-rotation hole 441 is a through hole, meaning that the anti-rotation bolt 45 can be inserted once for every 180° rotation of the control screw 44. The difference between each fixed hovering position of the limiting member 43 is half a thread lead of the control screw 44. The control screw 44 is provided with several marking scale lines 442. There are two sets of marking scale lines 442, and each set passes through the opening of the anti-rotation hole 441. During the rotation of the control screw 44, the specific position of the limiting member 43 is determined by the relative position of the marking scale lines 442 and the limiting member 43, and then the specific stroke and other related parameters of the first mold opening are determined.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sliding block type secondary ejection mold, comprising a moving mold assembly (2) and an ejection mechanism (3), wherein the moving mold assembly (2) comprises a base (21), a mounting plate (22), and a moving mold frame (23), the mounting plate (22) being fixedly mounted on the base (21), a moving module (25) being mounted on the side of the mounting plate (22) away from the base (21), a moving template (24) being mounted on the moving mold frame (23), and a moving template (25) being provided on the moving template (24). The molding hole (241) through which the ejector mechanism (3) passes is provided. The moving mold frame (23) slides relative to the mounting plate (22). The ejector mechanism (3) includes an ejector plate (31) and an ejector rod (32). The ejector plate (31) slides relative to the base (21). The ejector rod (32) is connected to the ejector plate (31). The mounting plate (22), the moving mold frame (23), and the moving mold plate (24) are all provided with ejector holes (26) through which the ejector rod (32) passes. The feature is that: The ejection mechanism (3) further includes a clutch assembly (4), which includes a clutch slider (41) and a transmission guide rod (42). A transmission slide (233) is provided on the moving mold frame (23). One end of the transmission guide rod (42) is fixedly connected to the ejector plate (31), and the other end extends into the transmission slide (233). The clutch slider (41) is slidably disposed on the moving mold frame (23) and located on one side of the transmission guide rod (42). The sliding direction is perpendicular to the extension direction of the transmission guide rod (42). The transmission guide rod (42) and the clutch slider (41) selectively abut against each other. The clutch assembly (4) further includes a limiting member (43), which is mounted on the mounting plate (22) and selectively abuts against the end of the clutch slider (41) away from the transmission guide rod (42); The clutch slider (41) is provided with a force-receiving inclined surface (412) and a spring-back inclined surface (413). The transmission guide rod (42) is provided with a force-transmitting inclined surface (421). The force-transmitting inclined surface (421) and the force-receiving inclined surface (412) are parallel. The limiting member (43) is provided with a reset inclined surface (431). The reset inclined surface (431) and the spring-back inclined surface (413) are parallel. When the force-transmitting inclined surface (421) and the force-receiving inclined surface (412) abut and overlap, the side wall of the clutch slider (41) contacts the side wall of the limiting member (43). When the reset inclined surface (431) and the spring-back inclined surface (413) abut and overlap, the side wall of the clutch slider (41) contacts the side wall of the transmission guide rod (42).

2. The slider-type secondary ejection mold according to claim 1, characterized in that: The transmission slide (233) is located on the side wall of the moving mold frame (23), the clutch assembly (4) has two sets and is located on opposite sides of the moving mold assembly (2), and the limiting member (43) is connected to the side wall of the mounting plate (22).

3. The slider-type secondary ejection mold according to claim 2, characterized in that: The moving mold frame (23) includes a main body (231) and a grooving block (232). The grooving block (232) is detachably mounted on the main body (231). A control groove (234) is provided on the side wall of the main body (231). The grooving block (232) is located in the control groove (234). The clutch slider (41) moves in the control groove (234). The grooving block (232) is located next to the clutch slider (41). An anti-detachment groove (2321) is formed between the grooving block (232) and the bottom of the control groove (234). The length direction of the anti-detachment groove (2321) is parallel to the sliding direction of the clutch slider (41). An anti-detachment protrusion (414) is fixedly connected to the clutch slider (41). The anti-detachment protrusion (414) is located in the anti-detachment groove (2321).

4. A slider-type secondary ejection mold according to claim 2, characterized in that: The limiting member (43) is slidably connected to the mounting plate (22), and the sliding direction is consistent with the sliding direction of the ejector plate (31) relative to the mounting plate (22). The clutch assembly (4) also includes a control member for controlling the position of the limiting member (43) relative to the mounting plate (22).

5. A slider-type secondary ejection mold according to claim 4, characterized in that: The control component is a control screw (44), which is rotatably connected to the mounting plate (22). The axis of the control screw (44) is parallel to the sliding direction of the limiting component (43). The control screw (44) is threadedly connected to the limiting component (43), and the side wall of the limiting component (43) is in contact with the side wall of the moving mold frame (23) or the mounting plate (22).

6. A slider-type secondary ejection mold according to claim 5, characterized in that: The control screw (44) has an anti-rotation hole (441) along its own radial direction, and the mounting plate (22) is threaded with an anti-rotation bolt (45), the end of which is inserted into the anti-rotation hole (441).

7. A slider-type secondary ejection mold according to claim 5, characterized in that: The control screw (44) is provided with a plurality of marking scale lines (442), and the arrangement direction of the plurality of marking scale lines (442) is consistent with the length direction of the control screw (44).

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