Quick replacement structure of powder metallurgy bearing forming die

Abstract

The utility model discloses a quick replacement structure of a powder metallurgy bearing forming die, which comprises a base, a connecting table is fixedly mounted on the top side of the base, a die body is mounted on the top side of the connecting table in a clamping manner, a top plate is movably mounted on the inner side of the die body, and a supporting plate is fixedly mounted on the inner side of the base. An electric push rod is fixedly installed on the top side of the supporting plate. When the mold is used, the nuts on the outer sides of the first connecting bolt and the second connecting bolt are moved, the mold body is taken down so that mold bodies of other specifications can be replaced conveniently, and meanwhile the first connecting bolt is inserted into the connecting hole in the mold body in the assembling process; and a second connecting bolt at the bottom end of the movable rod is clamped with a connecting through groove and then is fixed by a nut, so that the die can be quickly replaced, bearings of different specifications can be produced, and the use is convenient and quick.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy bearing processing equipment, in particular to a quick replacement structure of a powder metallurgy bearing forming die. Background Art

[0002] Powder metallurgy bimetal sliding bearings are widely used in mechanical transmissions and have the advantages of low cost, high efficiency and high precision. Existing powder metallurgy bimetal sliding bearings generally include an outer steel sleeve and a powder metallurgy layer arranged on the inner side of the outer steel sleeve. The bonding strength between the outer steel sleeve and the powder metallurgy layer is the key to affecting the quality of the entire powder metallurgy bimetal sliding bearing.

[0003] The patent with announcement number CN214236276U discloses a powder metallurgy bimetallic sliding bearing forming die. Through the upper punch, upper storage ring, lower punch and lower storage ring that cooperate with each other, the upper punch, lower punch and core rod can be used to directly press the powder metallurgy powder onto the inner wall of the outer steel sleeve during the forming process to form a powder metallurgy layer, thereby improving the bonding force between the outer steel sleeve and the powder metallurgy layer, and making the density of the powder metallurgy layer of the molded powder metallurgy bimetallic sliding bearing more uniform at the upper and lower ends, effectively reducing the density difference between the upper and lower ends, and preventing the bearing service life from being affected by the excessive density difference between the upper and lower ends.

[0004] During use, different storage ring molds, upper punches and lower punches need to be replaced in order to manufacture bearings of different specifications. The replacement is troublesome and time-consuming, and the scope of use is small. It is impossible to press and form bearings of different specifications, and only bearings of the same specification can be produced. In addition, it is not conducive to demoulding during use, and the complicated material removal increases the difficulty of production. Utility Model Content

[0005] The purpose of the utility model is to provide a quick replacement structure for a powder metallurgy bearing forming die, so as to solve the technical problems that the existing forming die has a small application range, is not conducive to deinking, and has complicated mold parts replacement, which increases production difficulty.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A quick-change structure for a powder metallurgy bearing forming mold comprises a base, a connecting platform fixedly mounted on the top side of the base, a mold body mounted on the top side of the connecting platform by snap-fitting, a top plate movably mounted on the inner side of the mold body, a support plate fixedly mounted on the inner side of the base, an electric push rod fixedly mounted on the top side of the support plate, a mounting plate fixedly mounted on the top end of the electric push rod, a support frame fixedly mounted on the rear side of the base, a cylinder provided on the top side of the support frame, a pressure plate fixedly mounted on the bottom end of the cylinder, an adjustment sleeve movably mounted on the bottom side of the pressure plate, and an adjustment frame movably mounted between the adjustment sleeves.

[0008] As a preferred solution of the present invention, a fixing column is fixedly installed on the bottom side of the connecting platform, three No. 1 connecting bolts are equidistantly arranged in a ring on the top side of the connecting platform, and a positioning hole is provided at the top side of the connecting platform.

[0009] During use, the positioning holes facilitate the positioning and installation of the mold body, and the three No. 1 connecting bolts facilitate the connection and fixation of the mold body with the nuts when installing the mold body.

[0010] As a further solution of the present invention, a molding cavity is opened on the top side of the mold body, three through holes are opened on the bottom side of the inner side of the molding cavity, and a connecting hole is opened on the bottom side of the mold body, and the connecting holes correspond one-to-one to the No. 1 connecting bolts.

[0011] Under the action of the forming cavity, it is convenient to press and form after placing the raw materials. At the same time, under the action of the connecting hole, it is convenient to install the mold body through the connecting hole and the No. 1 connecting bolt to improve the installation convenience.

[0012] As a further solution of the present invention, a movable rod is fixedly installed on the bottom side of the top plate. There are three movable rods in total, which are movably installed on the inner sides of the through holes, and a No. 2 connecting bolt is fixedly installed on the bottom end of the movable rod.

[0013] Under the action of the No. 2 connecting bolt, it is convenient to connect with the mounting plate and then fix it through the nut, which improves the convenience of combined installation. At the same time, under the action of the movable rod, it is beneficial for the movable rod to push the top plate to move, thereby realizing two-way stamping and facilitating the ejection of the formed workpiece.

[0014] As a preferred solution of the present invention, the mounting plate has a circular structure, and a connecting groove is provided on the top side of the mounting plate. There are three connecting grooves in total, which are arranged in a circular manner and equidistantly on the top side of the mounting plate.

[0015] With the help of the connecting groove, it is convenient to position, insert, connect and fix the No. 2 connecting bolt when replacing mold bodies, top plates and movable rods of different specifications, thereby avoiding the inability to combine and install due to inconsistent specifications and dimensions.

[0016] As a further preferred embodiment of the present invention, a slide groove is provided on the bottom side of the pressure plate, a slider is provided on the inner side of the slide groove, and a slider is fixedly installed on the top side of the adjustment sleeve. There are three adjustment sleeves in total, and movable cavities are provided on the opposite sides of the adjustment sleeve.

[0017] Under the action of the three sets of sliding grooves and sliders, it is beneficial to limit the adjustment sleeve and improve the stability during the telescopic adjustment process. At the same time, under the action of the movable cavity, it is beneficial to facilitate the sliding of the movable sleeve during the telescopic adjustment.

[0018] As a further solution of the present invention, the adjustment frame includes a movable sleeve and a base plate. The movable sleeve is movably installed on the inner side of the movable cavity on the opposite side of the adjustment sleeve, and a spring is fixedly installed between the movable sleeve and the movable cavity. The base plate is fixedly installed on the bottom side of the movable sleeve.

[0019] When the pressing plate moves, the adjusting sleeve and the adjusting frame are driven downward and engaged with the forming cavity. Under the extrusion action, the movable sleeve and the bottom plate move inside the movable cavity and the bottom side of the adjusting sleeve, which is conducive to automatic adjustment according to different specifications of the mold body, thereby facilitating stamping and forming.

[0020] Compared with the prior art, the quick replacement structure of the powder metallurgy bearing forming die provided by the present invention has the following beneficial effects:

[0021] 1. The utility model places the raw material inside the forming cavity of the mold body, starts the cylinder to drive the pressing plate, adjusting sleeve and adjusting frame to move downward and engage with the forming cavity, and continuously moves to stamp and form the raw material. The electric push rod is started to drive the mounting plate, movable rod and top plate to move upward, thereby realizing bidirectional stamping and forming of the raw material, which is beneficial to improving the forming efficiency and the pressure uniformity of the bottom side of the workpiece. After stamping and forming, the formed bearing can be pushed out of the mold body through the top plate for quick removal, thereby improving the convenience of production and use.

[0022] 2. When it is necessary to produce bearings of other specifications, the mold body can be removed by rotating the nuts on the outside of the No. 1 connecting bolt and the No. 2 connecting bolt, thereby facilitating the replacement of the mold body of other specifications. At the same time, during assembly, the connecting hole on the mold body is inserted with the No. 1 connecting bolt, and the No. 2 connecting bolt at the bottom end of the movable rod is engaged with the connecting groove and then fixed with the nut. This is conducive to rapid replacement of molds and production of bearings of different specifications, and is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0025] Figure 2 This is a front view structural diagram of an embodiment of the utility model;

[0026] Figure 3This is a structural diagram of the base and the connecting platform in an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the exploded structure of the mold body and the top plate in the embodiment of the present utility model;

[0028] Figure 5 This is a structural diagram of the mounting plate in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the exploded structure of the adjustment sleeve and the adjustment frame in the embodiment of the utility model;

[0030] Figure 7 It is a bottom view structural diagram of the pressing plate in the embodiment of the utility model.

[0031] Figure numerals: 1. base; 2. connecting platform; 3. mold body; 4. top plate; 5. support plate; 6. electric push rod; 7. mounting plate; 8. support frame; 9. cylinder; 10. pressure plate; 11. adjustment sleeve; 12. adjustment frame; 201. fixing column; 202. No. 1 connecting bolt; 203. positioning hole; 301. molding cavity; 302. connecting hole; 401. movable rod; 402. No. 2 connecting bolt; 701. connecting groove; 1001. slide groove; 1101. movable cavity; 1201. movable sleeve; 1202. bottom plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is a further detailed description of the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the embodiments of the present invention.

[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0035] like Figure 1-2 As shown, an embodiment of the utility model provides a quick replacement structure for a powder metallurgy bearing forming mold, comprising a base 1, a connecting platform 2 is fixedly installed on the top side of the base 1, a mold body 3 is installed on the top side of the connecting platform 2 by snapping, a top plate 4 is movably installed on the inner side of the mold body 3, a support plate 5 is fixedly installed on the inner side of the base 1, an electric push rod 6 is fixedly installed on the top side of the support plate 5, a mounting plate 7 is fixedly installed on the top end of the electric push rod 6, a support frame 8 is fixedly installed on the rear side of the base 1, a cylinder 9 is provided on the top side of the support frame 8, a pressing plate 10 is fixedly installed on the bottom end of the cylinder 9, an adjusting sleeve 11 is movably installed on the bottom side of the pressing plate 10, and an adjusting frame 12 is movably installed between the adjusting sleeves 11.

[0036] See also Figure 3 As shown, a fixing post 201 is fixedly mounted on the bottom side of the connecting platform 2, and three No. 1 connecting bolts 202 are equidistantly arranged in a circular pattern on the top side of the connecting platform 2. Positioning holes 203 are provided at the beginning of the top side of the connecting platform 2. The positioning holes 203 facilitate the positioning and installation of the mold body 3, and the three No. 1 connecting bolts 202 facilitate the connection and fixing of the mold body 3 with the nuts when installing the mold body 3.

[0037] The top side of the mold body 3 defines a forming cavity 301. Three through-holes are formed on the bottom of the mold body 3. Furthermore, a connecting hole 302 is formed on the bottom side of the mold body 3. The connecting holes 302 correspond one-to-one with the No. 1 connecting bolts 202. The forming cavity 301 facilitates placement of the raw material for press forming. Furthermore, the connecting holes 302 facilitate alignment of the connecting holes 302 with the No. 1 connecting bolts 202 during installation of the mold body 3, improving installation convenience.

[0038] See also Figure 4 As shown, a movable rod 401 is fixedly mounted on the bottom side of the top plate 4. There are three movable rods 401 in total, which are movably mounted on the inner sides of the through holes. A second connecting bolt 402 is fixedly mounted on the bottom end of the movable rod 401. The second connecting bolt 402 is conveniently connected to the mounting plate 7 and then fixed with a nut, improving the convenience of combined installation. At the same time, under the action of the movable rod 401, it is convenient for the movable rod 401 to push the top plate 4 to move, thereby realizing bidirectional stamping and facilitating the ejection of the formed workpiece.

[0039] See also Figure 5As shown, the mounting plate 7 is circular in structure, and a connecting slot 701 is formed on the top side of the mounting plate 7. There are three connecting slots 701, which are arranged in a circular pattern and equidistantly on the top side of the mounting plate 7. The connecting slots 701 facilitate positioning, insertion, connection, and fixation of the No. 2 connecting bolt 402 when replacing mold bodies 3, top plates 4, and movable rods 401 of different specifications, thereby avoiding incompatibility caused by inconsistent specifications and dimensions.

[0040] See also Figure 7 As shown, the bottom side of the pressure plate 10 is provided with a slide groove 1001, the inner side of which is provided with a slider. The slider is fixedly mounted on the top side of the adjustment sleeve 11. There are three adjustment sleeves 11 in total, and movable cavities 1101 are respectively provided on opposite sides of the adjustment sleeve 11. The three sets of slide grooves 1001 and sliders facilitate the positioning of the adjustment sleeve 11, improving stability during the telescopic adjustment process. At the same time, under the action of the movable cavity 1101, it is convenient for the movable sleeve 1201 to slide during telescopic adjustment.

[0041] See also Figure 6 As shown, the adjustment frame 12 includes a movable sleeve 1201 and a bottom plate 1202. The movable sleeve 1201 is movably mounted inside the movable cavity 1101 on the opposite side of the adjustment sleeve 11, and a spring is fixedly installed between the movable sleeve 1201 and the movable cavity 1101. The bottom plate 1202 is fixedly installed on the bottom side of the movable sleeve 1201. When the adjustment sleeve 11 and the adjustment frame 12 are driven downward by the pressing plate 10 and engaged with the forming cavity 301, under the extrusion effect, the movable sleeve 1201 and the bottom plate 1202 move inside the movable cavity 1101 and on the bottom side of the adjustment sleeve 11, thereby facilitating automatic adjustment according to the different specifications of the mold body 3, thereby facilitating stamping and forming.

[0042] When in use, the raw material is placed inside the forming cavity 301 of the mold body 3, and the cylinder 9 is started to drive the pressing plate 10, the adjusting sleeve 11 and the adjusting frame 12 to move downward and engage with the forming cavity 301, and the raw material is continuously moved to be stamped and formed, and the mounting plate 7, the movable rod 401 and the top plate 4 are driven upward by starting the electric push rod 6, thereby realizing two-way stamping and forming of the raw material, which is beneficial to improving the forming efficiency and the pressure uniformity of the bottom side of the workpiece, and after stamping and forming, it is convenient to push the formed bearing out of the mold body 3 through the top plate 4 for quick removal, thereby improving the convenience of production and use, and at the same time facing the adjusting sleeve 11 and the adjusting frame 12 in The protrusions that appear during the stamping process can be removed later by turning or grinding. Then, when bearings of other specifications need to be produced, the nuts on the outside of the No. 1 connecting bolt 202 and the No. 2 connecting bolt 402 are rotated, and the mold body 3 is removed, which makes it convenient to replace the mold body 3 of other specifications. At the same time, during assembly, the connecting hole 302 on the mold body 3 is inserted with the No. 1 connecting bolt 202, and the No. 2 connecting bolt 402 at the bottom of the movable rod 401 is engaged with the connecting groove 701 and then fixed with a nut. This is conducive to quick replacement of molds and production of bearings of different specifications. It is convenient and quick to use.

[0043] The above shows and describes the basic principles of the present invention. The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-change structure for a powder metallurgy bearing forming die, comprising a base (1), characterized in that: A connecting platform (2) is fixedly mounted on the top side of the base (1), a mold body (3) is mounted on the top side of the connecting platform (2) by snapping, a top plate (4) is movably mounted on the inner side of the mold body (3), a support plate (5) is fixedly mounted on the inner side of the base (1), an electric push rod (6) is fixedly mounted on the top side of the support plate (5), a mounting plate (7) is fixedly mounted on the top end of the electric push rod (6), a support frame (8) is fixedly mounted on the rear side of the base (1), a cylinder (9) is provided on the top side of the support frame (8), a pressing plate (10) is fixedly mounted on the bottom end of the cylinder (9), an adjusting sleeve (11) is movably mounted on the bottom side of the pressing plate (10), and an adjusting frame (12) is movably mounted between the adjusting sleeves (11).

2. The quick-change structure for a powder metallurgy bearing forming die according to claim 1, characterized in that: A fixing column (201) is fixedly installed on the bottom side of the connecting platform (2), three No. 1 connecting bolts (202) are equidistantly arranged in a ring on the top side of the connecting platform (2), and a positioning hole (203) is provided at the top side of the connecting platform (2).

3. The quick-change structure for a powder metallurgy bearing forming die according to claim 2, characterized in that: A molding cavity (301) is provided on the top side of the mold body (3), three through holes are provided on the bottom side of the inner side of the molding cavity (301), and a connecting hole (302) is provided on the bottom side of the mold body (3), and the connecting holes (302) correspond one-to-one to the No. 1 connecting bolts (202).

4. The quick-change structure for a powder metallurgy bearing forming die according to claim 3, characterized in that: A movable rod (401) is fixedly mounted on the bottom side of the top plate (4), and a total of three movable rods (401) are provided, which are movably mounted on the inner sides of the through holes, and a No. 2 connecting bolt (402) is fixedly mounted on the bottom end of the movable rod (401).

5. The quick-change structure for a powder metallurgy bearing forming die according to claim 1, characterized in that: The mounting plate (7) has a circular structure, and a connecting through slot (701) is provided on the top side of the mounting plate (7). There are three connecting through slots (701) in total, which are arranged in an annular manner and are equidistantly provided on the top side of the mounting plate (7).

6. The quick-change structure for a powder metallurgy bearing forming die according to claim 1, characterized in that: A slide groove (1001) is provided on the bottom side of the pressure plate (10), a slider is provided on the inner side of the slide groove (1001), and a slider is fixedly installed on the top side of the adjustment sleeve (11). There are three adjustment sleeves (11) in total, and movable cavities (1101) are respectively provided on opposite sides of the adjustment sleeve (11).

7. The quick-change structure for a powder metallurgy bearing forming die according to claim 6, characterized in that: The adjustment frame (12) comprises a movable sleeve (1201) and a bottom plate (1202); the movable sleeve (1201) is movably mounted on the inner side of a movable cavity (1101) on the opposite side of the adjustment sleeve (11); a spring is fixedly mounted between the movable sleeve (1201) and the movable cavity (1101); and the bottom plate (1202) is fixedly mounted on the bottom side of the movable sleeve (1201).

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