Reset forced pulling mechanism

Abstract

The utility model discloses a reset forced pulling mechanism which comprises an ejector rod sleeve, an ejector rod, a clamping block and a ball screw. One end of the ejector rod sleeve is detachably connected with the die-casting machine, and the other end of the ejector rod sleeve is provided with an ejector rod insertion hole for inserting one end of the ejector rod with the annular groove and is detachably connected with the ejector plate; two opposite positioning grooves are formed in the side wall of the ejector rod sleeve, and the two positioning grooves are both communicated with the ejector rod insertion hole; the clamping block is arranged in the ejector rod insertion hole from one positioning groove and is provided with two clamping plates clamped in the ejector rod annular groove, a positioning plate is connected between the two clamping plates, the positioning plate is located in the positioning groove, and a positioning hole is concavely formed in the positioning plate; a bead screw is installed in the side wall of the positioning groove, and a bead of the bead screw is movably exposed in the positioning groove and used for being movably clamped into the positioning hole in an aligned mode. Therefore, the ejector rod is inserted into the ejector rod sleeve and is matched with the ejector rod sleeve through the clamping block, so that the ejector rod and the ejector rod sleeve can be quickly mounted and dismounted, and the connection stability of the ejector rod and the ejector rod sleeve is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a reset and strong pull mechanism. Background Art

[0002] The reset and strong pull mechanism is usually used to execute the program of ejecting the ejector pin plate and the product by the ejector rod and then forcibly pulling back the ejector pin plate after the mold injection is completed.

[0003] Most traditional reset and strong pull mechanisms rely on mechanical springs, hydraulic or pneumatic systems to realize the separation action of the mold. Although these methods can solve problems to a certain extent, they have the disadvantages of slow response speed, low control precision, high energy consumption and complex maintenance. Especially when producing complex structures and high-precision parts, traditional mechanisms often fail to meet the requirements of fine control, resulting in incomplete demolding, casting damage or mold damage, which affects the overall production efficiency and product quality.

[0004] The reset and strong pull mechanisms of current die-casting machines on the market generally adopt hydraulic drive. Although they can provide a large pulling force, they are lacking in precision control and reaction speed. Moreover, the maintenance cost of the hydraulic system is high, it is easy to leak, and it also has a certain impact on the environment. And the disassembly and assembly between the traditional reset and strong pull mechanism and the die-casting machine are relatively difficult. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a reset and strong pull mechanism, which has the advantages of convenient disassembly and assembly, and can improve the overall durability and stability of the mechanism.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A reset and strong pull mechanism includes an ejector rod sleeve, an ejector rod, a clamping block and a ball screw;

[0008] One end of the ejector rod sleeve is detachably connected to the die-casting machine, and the other end has an ejector rod insertion hole for one end of the ejector rod to be inserted. The end of the ejector rod inserted into the ejector rod insertion hole has an annular groove, and the other end of the ejector rod is detachably connected to the ejector pin plate of the mold;

[0009] On the side wall of the ejector rod sleeve between the two ends of the ejector rod sleeve, two oppositely arranged positioning grooves are provided, and both of the two positioning grooves communicate with the ejector rod insertion hole;

[0010] The clamping block is loaded into the ejector rod insertion hole from one of the positioning grooves, and the clamping block has two symmetric clamping plates that are clamped on the annular groove of the ejector rod. One end of the two clamping plates forms a clamping block opening, and a positioning plate is connected between the other ends of the two clamping plates. The positioning plate is located in one of the positioning grooves, and a positioning hole is recessed on the positioning plate;

[0011] The ball screw is installed inside the side wall of the positioning groove, and the ball of the ball screw is movably exposed inside the positioning groove for movably aligning and snapping into the positioning hole.

[0012] Furthermore, the clamping block is inserted into the ejector rod jack from one of the positioning grooves, and both clamping plates of the clamping block have protruding parts that cross the ejector rod jack and extend out of the other positioning groove.

[0013] Furthermore, the positioning holes are respectively recessed on two opposite side surfaces of the positioning plate; the ball screws are respectively installed on two opposite side walls inside the positioning groove corresponding to the positioning holes of the positioning plate.

[0014] Furthermore, two end faces of the ejector rod sleeve respectively have two mounting holes communicating with the positioning groove; the ball screw is installed in the mounting hole.

[0015] Furthermore, one end of the ejector rod sleeve has a protruding threaded end for detachably connecting with the die casting machine.

[0016] Furthermore, it further includes a pull rod sleeve and a plurality of socket head screws; the other end of the ejector rod is detachably connected with the ejector plate through the pull rod sleeve; the other end of the ejector rod has a threaded portion, and the middle part of the pull rod sleeve has a threaded hole threadedly matched with the threaded portion; a plurality of screw through holes are circumferentially and spaced apart from each other on the outer periphery of the threaded hole of the pull rod sleeve, and each socket head screw respectively passes through the screw through hole to lock and fix the pull rod sleeve and the ejector plate.

[0017] Furthermore, the threaded portion is convexly arranged in the middle of the end face of the other end of the ejector rod; four screw through holes are circumferentially and evenly spaced on the pull rod sleeve.

[0018] Furthermore, the cross section of the middle part of the ejector rod is circular or polygonal.

[0019] After adopting the above technical solution, after adopting this mechanism, when opening the mold, the ejector rod and the ejector rod sleeve are used to connect the ejector plate and the die casting machine table, with a simple structure and convenient operation. During the ejection operation, the ejector rod drives the ejector plate connected thereto to eject the product; when closing the mold, the ejector rod moves under the action of the die casting machine, thereby driving the ejector plate to be forcibly reset, and the ejection structure is completely reset to ensure the safe production of the mold; by setting the ejector rod to be inserted into the ejector rod sleeve and using the clamping block for cooperation, the installation and disassembly of the ejector rod and the ejector rod sleeve can be quickly realized, and the stability of the connection between the two can be maintained.

[0020] During installation, insert the end of the ejector rod with the annular groove into the ejector rod jack, and then insert the opening of the clamping block towards one of the positioning grooves. The opening of the clamping block can make way for the ejector rod, enabling the two clamping plates of the clamping block to extend into the ejector rod jack and be clamped in the annular groove to limit the ejector rod in the ejector rod jack, preventing axial displacement and detachment from the ejector rod jack. However, it can rotate freely in the circumferential direction and can cooperate with the ejector rod sleeve and the die-casting machine table to achieve various linkage methods.

[0021] After the clamping block is installed in place, the positioning plate of the clamping block is accommodated in the positioning groove, and the positioning hole on the positioning plate can be limited by the ball of the ball screw to prevent the clamping block from detaching from the positioning groove, improving the connection stability between the ejector rod and the ejector rod sleeve, thereby enhancing the overall durability and stability of the mechanism.

[0022] During disassembly, simply apply force from the other positioning groove to make the clamping block overcome the elastic force of the ball, and the clamping block can be ejected from the other positioning groove, causing its clamping plate to disengage from the ejector rod jack, releasing the limit on the ejector rod. The ejector rod can then freely enter and exit the ejector rod jack for maintenance, replacement, and other operations.

[0023] The two positioning grooves are arranged opposite to each other, and ball screws are provided in both positioning grooves. Therefore, the clamping block can be inserted from any positioning groove. Description of the Drawings

[0024] Figure 1 Is an exploded view of an embodiment of the present utility model;

[0025] Figure 2 Is a perspective view of the ejector rod sleeve of an embodiment of the present utility model;

[0026] Figure 3 Is a perspective view of the clamping block of an embodiment of the present utility model;

[0027] Figure 4 Is a perspective view of the ejector rod of an embodiment of the present utility model;

[0028] Figure 5 Is a perspective view of the pull rod sleeve of an embodiment of the present utility model;

[0029] Figure 6 Is a top view of the ejector rod sleeve of an embodiment of the present utility model;

[0030] Figure 7 Is a schematic connection diagram of an embodiment of the present utility model and the ejector pin plate;

[0031] Figure 8 Is Figure 7 A cross-sectional view of;

[0032] Figure 9 Is Figure 8 An exploded view of.

[0033] Description of reference numerals: Reset strong pull mechanism 10, ejector sleeve 1, ejector rod insertion hole 11, side wall of ejector sleeve 12, positioning groove 13, mounting hole 14, threaded end 15, ejector rod 2, annular groove 21, threaded portion 22, locking block 3, clamping plate 31, protruding portion 311, locking block opening 32, positioning plate 33, positioning hole 331, ball screw 4, ball 41, pull rod sleeve 5, threaded hole 51, screw through hole 52, socket head screw 6, ejector plate 20. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0035] As Figures 1 to 9 shown, a reset strong pull mechanism of the present utility model can be used for installing on a die casting machine (not shown in the figure) to perform reset strong pull operations.

[0036] As Figures 1 to 5 shown, the reset strong pull mechanism 10 includes an ejector sleeve 1, an ejector rod 2, a locking block 3 and a ball screw 4.

[0037] One end of the ejector sleeve 1 is detachably connected to the die casting machine, and the other end has an ejector rod insertion hole 11 for inserting one end of the ejector rod 2. The end of the ejector rod 2 inserted into the ejector rod insertion hole 11 has an annular groove 21, and the other end of the ejector rod 2 is detachably connected to the ejector plate 20 of the mold;

[0038] On the side wall 12 of the ejector sleeve 1 between the two ends, two oppositely arranged positioning grooves 13 are provided, and both of the two positioning grooves 13 communicate with the ejector rod insertion hole 11;

[0039] The locking block 3 is inserted into the ejector rod insertion hole 11 from one of the positioning grooves 13, and the locking block 3 has two symmetric clamping plates 31 clamped on the annular groove 21 of the ejector rod 2. One end of the two clamping plates 31 forms a locking block opening 32, and a positioning plate 33 is connected between the other ends of the two clamping plates 31. The positioning plate 33 is located in one of the positioning grooves 13, and a positioning hole 331 is recessed on the positioning plate 33;

[0040] The ball screw 4 is installed inside the side wall of the positioning groove 13, and the ball 41 of the ball screw 4 is movably exposed in the positioning groove 13 for movably aligning and snapping into the positioning hole 331.

[0041] Therefore, after adopting this mechanism, when opening the mold, the ejector pin 2 and the ejector pin sleeve 1 are used to connect the ejector plate 20 and the die-casting machine table. The structure is simple and the operation is easy. During the ejection operation, the ejector pin 2 drives the ejector pin 20 connected thereto to eject the product; when closing the mold, the ejector pin 2 moves under the action of the die-casting machine, thereby driving the ejector pin 20 to be forced to reset, and the ejection structure is completely reset to ensure the safe production of the mold; by setting the ejector pin 2 to be inserted into the ejector pin sleeve 1 and using the clamping block 3 to cooperate, the ejector pin 2 and the ejector pin sleeve 1 can be quickly installed and disassembled, and the stability of the connection between the two can be maintained.

[0042] For details, see Figure 8 and Figure 9 During installation, insert one end of the ejector rod 2 with the annular groove 21 into the ejector rod socket 11, and then insert the block opening 32 of the block 3 toward one of the positioning grooves 13. The block opening 32 can make way for the ejector rod 2, so that the two clamping plates 31 of the block 3 can extend into the ejector rod socket 11 and be clamped in the annular groove 21, so as to limit the ejector rod 2 in the ejector rod socket 11, so that it cannot be displaced in the axial direction and cannot be separated from the ejector rod socket 11, but can rotate freely in the circumferential direction, and can cooperate with the ejector rod sleeve 1 and the die-casting machine to realize various linkage modes.

[0043] After the block 3 is installed in place, the positioning plate 33 of the block 3 is accommodated in the positioning groove 13, and the positioning hole 331 on the positioning plate 33 can be limited by the pop-up ball 41 of the ball screw 4, so as to prevent the block 3 from being separated from the positioning groove 13, thereby improving the stability of the connection between the push rod 2 and the push rod sleeve 1, thereby improving the overall durability and stability of the mechanism.

[0044] When disassembling, it is only necessary to apply force from one of the positioning grooves 13 to make the card block 3 overcome the elastic force of the ball 41, so that the card block 3 can be pushed out from the other positioning groove 13, so that the card plate 31 is separated from the push rod insertion hole 11, and the limit on the push rod 2 is released. The push rod 2 can freely enter and exit the push rod insertion hole 11, so as to facilitate maintenance and replacement operations.

[0045] The two positioning grooves 13 are arranged opposite to each other, and a ball screw 4 is arranged in each positioning groove 13 , so the clamping block 3 can be installed in any positioning groove 13 .

[0046] like Figure 7 and Figure 8 The block 3 is inserted into the ejector rod insertion hole 11 from one of the positioning grooves 13, and both of the two clamping plates 31 have a protrusion 311 that passes over the ejector rod insertion hole 11 and extends out of the other positioning groove 13. Therefore, when disassembling, the protrusion 311 can be conveniently knocked with a tool to separate the block 3 from the positioning groove 13 of the ejector rod sleeve 1, and the disassembly operation is convenient and quick.

[0047] like Figure 1 and Figure 9As shown, positioning holes 331 may be recessed on two opposite sides of the positioning plate 33; wave bead screws 4 are installed on two opposite side walls in the positioning groove 13 corresponding to the positioning holes 331 of the positioning plate 33. Two wave bead screws 4 are provided in each positioning groove 13 for locking against each other, which can play a stable and reliable positioning role.

[0048] Moreover, two installation holes 14 communicating with the positioning groove 13 are respectively provided on two end faces of the ejector rod sleeve 1; the wave bead screws 4 can be locked and installed in the installation holes 14 from both ends of the ejector rod sleeve 1.

[0049] Also, Figure 1 one end of the ejector rod sleeve 1 has a protruding thread end 15 (threads are omitted in the figure), which is used for detachable connection with the die-casting machine. The threads of the thread end 15 can be M20.

[0050] In this embodiment, as Figure 1 , Figure 8 and Figure 9 shown, the reset strong pull mechanism 10 may further include a pull rod sleeve 5 and a plurality of socket head cap screws 6.

[0051] The other end of the ejector rod 2 is detachably connected to the ejector pin plate 20 through the pull rod sleeve 5.

[0052] Specifically, the other end of the ejector rod 2 has a threaded portion 22 (threads are omitted in the figure), and the middle of the pull rod sleeve 5 has a threaded hole 51 that is threadedly engaged with the threaded portion 22 (threads are omitted in the figure); a plurality of screw through holes 52 are provided on the outer periphery of the threaded hole 51 of the pull rod sleeve 5, and each socket head cap screw 6 respectively passes through the screw through holes 52 to lock and fix the pull rod sleeve 5 and the ejector pin plate 20.

[0053] By this means, the detachable connection of the ejector rod 2 and the ejector pin plate 20 by using the pull rod sleeve 5 can increase the reliability of the connection, and is convenient for installation, disassembly, maintenance and servicing. During installation, first threadedly lock and fix the ejector rod 2 and the threaded hole 51 of the pull rod sleeve 5, and then lock the pull rod sleeve 5 to the ejector pin plate 20 through each socket head cap screw 6, which is more convenient for installation and disassembly.

[0054] In this embodiment, the threaded portion 22 protrudes in the middle of the end face of the other end of the ejector rod 2; the threads of the threaded portion 22 can be M16; four circumferentially evenly spaced screw through holes 52 are provided on the pull rod sleeve 5, and the threads of the screw through holes 52 can be M8. To achieve a stable and reliable connection.

[0055] In this embodiment, key components such as the ejector rod sleeve 1, the block 3, the ejector rod 2, and the pull rod sleeve 5 can be made of high-strength and wear-resistant materials to optimize the mechanism layout, reduce friction and stress concentration, thereby improving the overall durability and stability of the mechanism.

[0056] In this embodiment, the cross-section of the middle part of the ejector rod 2 is taken as an example of a circle. Of course, the cross-section of the middle part can also be set as a polygon such as a triangle, a quadrilateral, a pentagon, a hexagon, etc.

[0057] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, equivalent changes and modifications made without departing from the principle of the present invention should still fall within the protection scope of the present invention.

[0058] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In the description of the present application, the meanings of "a plurality" and "several" are two or more, unless otherwise specifically defined.

Claims

1. A reset strong pulling mechanism, characterized in that: Including ejector sleeve, ejector, clamping block and ball screw; One end of the ejector sleeve is detachably connected to the die-casting machine, and the other end is provided with an ejector socket, the ejector socket is used for inserting one end of the ejector, the end of the ejector inserted into the ejector socket is provided with an annular groove, and the other end of the ejector is detachably connected to the ejector plate of the mold; Two positioning grooves arranged opposite to each other are arranged on the side wall of the push rod sleeve between the two ends of the push rod sleeve, and both positioning grooves are connected to the push rod insertion hole; The card block is inserted into the mandrel insertion hole from one of the positioning grooves, and the card block has two symmetrical card plates that are symmetrically clamped in the mandrel annular groove, one end of the two card plates forms a card block opening, and a positioning plate is connected between the other ends of the two card plates, the positioning plate is located in one of the positioning grooves, and a positioning hole is concavely provided on the positioning plate; The ball screw is installed in the side wall of the positioning groove, and the ball of the ball screw is movably exposed in the positioning groove, so as to be movably aligned and snapped into the positioning hole.

2. A reset strong pulling mechanism according to claim 1, characterized in that: The clamping block is inserted into the ejector rod insertion hole from one of the positioning grooves, and the two clamping plates of the clamping block are provided with a protrusion which passes over the ejector rod insertion hole and extends out of the other positioning groove.

3. A reset strong pulling mechanism according to claim 1, characterized in that: The positioning holes are respectively recessed on two opposite side surfaces of the positioning plate; and the ball screws are installed on two opposite side walls in the positioning groove corresponding to the positioning holes of the positioning plate.

4. A reset strong pulling mechanism according to any one of claims 1 to 3, characterized in that: The two end surfaces of the push rod sleeve are respectively provided with two mounting holes connected to the positioning groove; the ball screw is installed in the mounting hole.

5. A reset strong pulling mechanism according to claim 1, characterized in that: One end of the ejector sleeve is provided with a protruding threaded end for detachable connection with a die-casting machine.

6. A reset strong pulling mechanism according to claim 1, characterized in that: It also includes a pull rod sleeve and a plurality of cup head screws; the other end of the push rod is detachably connected to the push rod sleeve and the ejector plate; the other end of the push rod has a threaded portion, and the middle part of the pull rod sleeve has a threaded hole that is threadedly matched with the threaded portion; the pull rod sleeve is provided with a plurality of circumferentially spaced screw through holes on the outer periphery of the threaded hole, and each cup head screw passes through the screw through hole to lock and fix the pull rod sleeve and the ejector plate.

7. A reset strong pulling mechanism according to claim 6, characterized in that: The threaded portion is protruding from the middle of the other end surface of the push rod; and the pull rod sleeve is provided with four screw through holes that are evenly spaced in the circumferential direction.

8. A reset strong pulling mechanism according to claim 1, characterized in that: The middle cross section of the mandrel is circular or polygonal.

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