Alloy steel powder press die positioning device

Abstract

The utility model relates to alloy steel powder pressing mould positioning device, including work bench, jacking cylinder, hydraulic cylinder and core rod, jacking cylinder sets up below work bench, the bottom welding of core rod has connecting plate, the connecting plate passes through fastener and the fixed jacking of jacking cylinder end, the top of work bench has set up and installed the slot, through the core rod bottom and connecting plate welding, and adopt fastener to make it with the jacking of jacking cylinder end rigid connection is formed, and simultaneously in workbench bottom adds the guide block and carries out supplementary positioning to core rod, has guaranteed the height synchronism of ejection action and the accuracy of motion trajectory, and in the working process, core rod always keeps vertical stable movement, not only has improved alloy steel powder pressing's positioning precision and product consistency, still has enhanced equipment's stability and reliability under long -term continuous operation greatly, effectively avoided the phenomenon that alloy steel part embryo was damaged when ejection because of uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of alloy steel powder parts production technology, specifically to an alloy steel powder pressing mold positioning device. Background Technology

[0002] In the production process of alloy steel powder metallurgy parts, it is usually necessary to use molds to press metal powder into shape. Most existing powder pressing devices include a base, an upper mold, a lower mold, and a core rod that can slide up and down in the forming cavity of the lower mold. During pressing, alloy steel powder is filled into the forming cavity of the lower mold above the core rod, and the upper mold applies pressure to form the part. When demolding, the core rod is pushed upward by a pushing device located below the base, thereby ejecting the pressed blank.

[0003] In the prior art, Chinese Patent No. CN221791024U discloses a metal powder pressing device for powder metallurgy, including a base, side plates, and a top plate. A lower mold base is fixedly installed on the upper surface of the base, and a through hole is opened inside the lower mold base. A sleeve is fixedly installed in the through hole, and a forming cavity is opened in the center of the sleeve. A core rod is slidably installed in the forming cavity. A hydraulic cylinder is fixedly installed on the upper surface of the top plate, and a telescopic rod is fixedly installed at the output end of the hydraulic cylinder. A pressure block is fixedly installed at the lower end of the telescopic rod. A cavity is opened below the core rod on the base, and an electric telescopic rod is installed in the cavity. The top of the electric telescopic rod is movably connected to the bottom of the core rod. This utility model, by setting a lower mold base and a sleeve, slidingly installing the core rod in the sleeve, and installing an electric telescopic rod in the base, allows the device to push the material out of the forming cavity by pushing out the core rod through the electric telescopic rod, without the need to flip the mold, effectively avoiding the risk of material falling.

[0004] However, in actual use, the above solution still has some shortcomings. The top of the electric telescopic rod only fits against the bottom plane of the core rod, without any reliable rigid connection method. As a result, when the electric telescopic rod is working during long-term use, its top will collide with the bottom of the core rod, causing the core rod to be slightly deflected in the sleeve, resulting in jamming. This makes the ejection process unstable and easily damages the pressed alloy steel part blank. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for alloy steel powder pressing molds to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An alloy steel powder pressing mold positioning device includes a worktable, a lifting cylinder, a hydraulic cylinder, and a core rod. The lifting cylinder is located below the worktable. A connecting plate is welded to the bottom of the core rod, and the connecting plate is fixed to the lifting end of the lifting cylinder by fasteners. A mounting groove is provided on the top of the worktable, and the core rod is slidably connected inside the mounting groove. A lower mold assembly is provided on the top of the worktable, and the core rod is located inside the lower mold assembly. A support platform is fixedly installed on the top of the worktable, and the hydraulic cylinder is fixedly installed on the top of the support platform. The telescopic end of the hydraulic cylinder extends to the bottom of the support platform, and a guide assembly is provided at the bottom of the telescopic end of the hydraulic cylinder. An upper mold assembly is provided at the bottom of the guide assembly. A positioning groove is provided on the bottom of the worktable, and a guide block located in the positioning groove is fixed to the bottom of the worktable by fasteners. The core rod is slidably connected inside the guide block.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the lower mold assembly includes a positioning mold and a forming mold. The positioning mold is fixedly installed on the top of the worktable by fasteners, and the forming mold is fixedly installed inside the positioning mold by fasteners. The forming mold has a forming cavity inside, and the core rod is located inside the forming cavity. The top of the core rod is flush with the top of the forming mold.

[0009] Furthermore, the guiding assembly includes guide rods and a movable plate. There are four guide rods, which are disposed between the worktable and the support platform. The movable plate slides through a flange linear bearing sleeved with the four guide rods. The bottom of the telescopic end of the hydraulic cylinder is fixed to the top of the movable plate.

[0010] Furthermore, the upper mold assembly includes an installation mold and a lower pressing mold. The installation mold and the lower pressing mold are installed in a T-shape. The installation mold is fixed to the bottom of the moving plate by fasteners. The outer diameter of the lower pressing mold is adapted to the inner diameter of the molding cavity.

[0011] Furthermore, the guide block has a guide groove inside, and the size of the guide groove is adapted to the size of the connecting plate.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: By welding the bottom of the core rod to the connecting plate and using fasteners to form a rigid connection with the lifting end of the lifting cylinder, and by adding guide blocks to the bottom of the worktable for auxiliary positioning of the core rod, the high synchronization of the ejection action and the accuracy of the movement trajectory are ensured. Furthermore, during operation, the core rod always maintains a vertical and stable movement. This not only improves the positioning accuracy and product consistency of alloy steel powder pressing, but also significantly enhances the stability and reliability of the equipment under long-term continuous operation, effectively preventing the alloy steel part blank from being damaged due to uneven force during ejection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure from one perspective of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This is a front cross-sectional view of the present invention. Figure 4 This is a schematic diagram of the disassembled structure of the upper mold component of this utility model; Figure 5 This is a schematic diagram of the lower mold assembly of this utility model from one perspective. Figure 6 This is a schematic diagram of the lower mold assembly of this utility model from another perspective; Figure 7 This is a top view of the disassembled lower mold assembly of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 1. Workbench; 2. Lifting cylinder; 3. Hydraulic cylinder; 4. Core rod; 5. Connecting plate; 6. Mounting groove; 7. Lower mold assembly; 701. Positioning mold; 702. Forming mold; 703. Forming cavity; 8. Support platform; 9. Guide assembly; 901. Guide rod; 902. Moving plate; 10. Upper mold assembly; 1001. Mounting mold; 1002. Lower pressing mold; 11. Positioning groove; 12. Guide block; 13. Guide groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figures 1-7As shown, this utility model provides a positioning device for an alloy steel powder pressing mold, including a worktable 1, a lifting cylinder 2, a hydraulic cylinder 3, and a core rod 4. The lifting cylinder 2 is located below the worktable 1. A connecting plate 5 is welded to the bottom of the core rod 4. The connecting plate 5 is fixed to the lifting end of the lifting cylinder 2 by fasteners. An installation groove 6 is provided on the top of the worktable 1. The core rod 4 is slidably connected to the inside of the installation groove 6. A lower mold assembly 7 is provided on the top of the worktable 1. The core rod 4 is located inside the lower mold assembly 7. A support platform 8 is fixedly installed on the top of the worktable 1. The hydraulic cylinder 3 is fixedly installed on the top of the support platform 8. The telescopic end of the hydraulic cylinder 3 extends to the bottom of the support platform 8. A guide assembly 9 is provided at the bottom of the telescopic end of the hydraulic cylinder 3. An upper mold assembly 10 is provided at the bottom of the guide assembly 9. A positioning groove 11 is provided on the bottom of the worktable 1. A guide block 12 located in the positioning groove 11 is fixed to the bottom of the worktable 1 by fasteners. The core rod 4 is slidably connected to the inside of the guide block 12.

[0017] The operator installs the lower mold assembly 7 on the top of the workbench 1, and fixes the connecting plate 5 at the bottom of the core rod 4 to the lifting end of the lifting cylinder 2 with fasteners to achieve a rigid connection. The core rod 4, under the action of the mounting groove 6, enters the molding cavity of the lower mold assembly 7 and remains vertically aligned under the guidance of the bottom guide block 12. When pressing is required, the lifting cylinder 2 is in the retracted state, and the core rod 4 is at its lower limit position. The operator fills a measured amount of alloy steel powder into the molding cavity of the lower mold assembly 7, and then activates the hydraulic cylinder 3, whose extension end… The bottom drives the upper mold assembly 10, which is connected to the bottom of the guide assembly 9, to move downwards and apply high pressure to the alloy steel powder. After molding, the telescopic end of the hydraulic cylinder 3 drives the upper mold assembly 10 to return to its original position. The lifting cylinder 2 then starts and reliably pushes the core rod 4 to rise smoothly along the guide block 12 and the mounting groove 6 through the connection with the connecting plate 5. This precisely pushes the molded blank out of the molding cavity of the lower mold assembly 7 to the predetermined height. Then, the operator removes the pressed blank, and the telescopic end of the lifting cylinder 2 retracts, driving the core rod 4 to precisely return to its initial position.

[0018] The lower mold assembly 7 includes a positioning mold 701 and a forming mold 702. The positioning mold 701 is fixedly installed on the top of the worktable 1 by fasteners. The forming mold 702 is fixedly installed inside the positioning mold 701 by fasteners. The forming mold 702 has a forming cavity 703 inside. The core rod 4 is located inside the forming cavity 703, and the top of the core rod 4 is flush with the top of the forming mold 702.

[0019] With this configuration, the positioning mold 701 provides a convenient fulcrum for the replacement and installation of the forming mold 702. After the forming mold 702 is installed, its bottom is also in contact with the top of the worktable 1. By changing the size of different blanks and replacing different forming molds 702, the size and style of the forming cavity 703 can be changed, thereby allowing for the replacement of different upper mold components 10 for pressing operations.

[0020] The guide assembly 9 includes guide rods 901 and a movable plate 902. There are four guide rods 901, which are set between the workbench 1 and the support platform 8. The movable plate 902 slides with the four guide rods 901 through a flange linear bearing. The bottom of the telescopic end of the hydraulic cylinder 3 is fixed to the top of the movable plate 902.

[0021] With this configuration, as the hydraulic cylinder 3 moves the movable plate 902 up and down at the bottom of its telescopic end, the stability of the movable plate 902 during movement is ensured by the cooperation of the four guide rods 901 and the flange linear bearing, thereby ensuring the accuracy of the upper mold assembly 10 during the pressing operation.

[0022] The upper mold assembly 10 includes an installation mold 1001 and a lower mold 1002. The installation mold 1001 and the lower mold 1002 are installed in a T-shape. The installation mold 1001 is fixed to the bottom of the moving plate 902 by fasteners. The outer diameter of the lower mold 1002 is adapted to the inner diameter of the molding cavity 703.

[0023] With this setup, the pressing mold 1002 can be easily removed from the mounting mold 1001 by simply lifting it upwards, thus completing the replacement. The T-shaped sleeve also provides a certain mounting effect. After the mounting mold 1001 is installed, its top fits against the top of the moving plate 902, and the pressing mold 1002 enters the interior of the forming mold 702 through the forming cavity 702, thereby ensuring stability during the pressing process.

[0024] The guide block 12 has a guide groove 13 inside, and the size of the guide groove 13 is adapted to the size of the connecting plate 5.

[0025] With this configuration, when the lifting cylinder 2 is performing the lifting operation, in order to ensure that it is easy to adjust according to the thickness of the pressed blank, a redundancy is provided by the guide groove 13, so that when the core rod 4 is lifted, its connecting plate 5 can also enter the guide block 12, providing the length to be ejected, which makes it easy to remove the blank.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for an alloy steel powder pressing mold, comprising a worktable (1), a lifting cylinder (2), a hydraulic cylinder (3), and a core rod (4), characterized in that: The lifting cylinder (2) is located below the workbench (1). A connecting plate (5) is welded to the bottom of the core rod (4). The connecting plate (5) is fixed to the lifting end of the lifting cylinder (2) by fasteners. An installation groove (6) is provided on the top of the workbench (1). The core rod (4) is slidably connected to the inside of the installation groove (6). A lower mold assembly (7) is provided on the top of the workbench (1). The core rod (4) is located inside the lower mold assembly (7). A support platform (8) is fixedly installed on the top of the workbench (1). The hydraulic cylinder (3) is fixedly installed on the top of the support platform (8). The telescopic end of the hydraulic cylinder (3) extends to the bottom of the support platform (8). A guide component (9) is provided at the bottom of the telescopic end of the hydraulic cylinder (3). An upper mold component (10) is provided at the bottom of the guide component (9). A positioning groove (11) is provided at the bottom of the worktable (1). A guide block (12) located in the positioning groove (11) is fixed at the bottom of the worktable (1) by fasteners. The core rod (4) is slidably connected to the inside of the guide block (12).

2. The positioning device for alloy steel powder pressing mold according to claim 1, characterized in that: The lower mold assembly (7) includes a positioning mold (701) and a forming mold (702). The positioning mold (701) is fixedly installed on the top of the workbench (1) by fasteners. The forming mold (702) is fixedly installed inside the positioning mold (701) by fasteners. A forming cavity (703) is opened inside the forming mold (702). The core rod (4) is located inside the forming cavity (703). The top of the core rod (4) is flush with the top of the forming mold (702).

3. The positioning device for alloy steel powder pressing mold according to claim 2, characterized in that: The guide assembly (9) includes guide rods (901) and a movable plate (902). There are four guide rods (901) and they are arranged between the workbench (1) and the support platform (8). The movable plate (902) slides with the four guide rods (901) through a flange linear bearing. The bottom of the telescopic end of the hydraulic cylinder (3) is fixed to the top of the movable plate (902).

4. The positioning device for alloy steel powder pressing mold according to claim 3, characterized in that: The upper mold assembly (10) includes an installation mold (1001) and a lower mold (1002). The installation mold (1001) and the lower mold (1002) are installed in a T-shape. The installation mold (1001) is fixed to the bottom of the moving plate (902) by fasteners. The outer diameter of the lower mold (1002) is adapted to the inner diameter of the forming cavity (703).

5. The positioning device for alloy steel powder pressing mold according to claim 2, characterized in that: The guide block (12) has a guide groove (13) inside, and the size of the guide groove (13) is adapted to the size of the connecting plate (5).

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