Powder metallurgy pressing die

Abstract

A lower die is arranged over a base, lifting columns are detachably connected to the positions, close to the four corners, of the top of the base, the output ends of the lifting columns are detachably connected to the four corners of the lower die, and a vertical plate is detachably connected to one side of the base. One end of the vertical plate is detachably connected with the hydraulic device in an embedded mode, the output end of the hydraulic device is detachably connected with the fixing plate, when the die needs to be replaced, the lower die is detached from the lifting column, then screws on the side plates are detached, and then the side plates can rotate downwards and incline along the rotating points of the side plates and the fixing plate; according to the upper die, the upper die is arranged on the fixing plate, then a worker unloads the upper die, then a new upper die is placed in the side plate, the side plate is pushed upwards till the side plate is attached to the fixing plate, and finally the screws are tightened, so that a large number of screws can be saved, the time delayed by detaching a plurality of screws is avoided, the convenience of replacing the upper die is improved, and the working efficiency is improved. And the overall processing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of powder metallurgy mould technical field, specifically a kind of powder metallurgy pressing mould. BACKGROUND

[0002] Powder metallurgy is one of the processes of producing metal products, powder raw materials are put into mould for pressing forming, and then the mould is produced by high-temperature sintering after pressing forming, because the production cost is relatively low, and the efficiency is high, so many metal parts are made in this way.

[0003] The main of powder metallurgy is to press the powder raw material, only after pressing and setting, subsequent sintering process and other processes can be carried out, as we all know, different products need different moulds, and the lower mould is in a relatively fixed state during production, while the upper mould needs to be lifted frequently under the control of driving equipment, which leads to the requirement of most upper mould fixing to be improved, but also increases the complexity of disassembling and replacing the upper mould, therefore, a kind of powder metallurgy pressing mould is proposed. SUMMARY

[0004] The technical scheme adopted by the utility model to solve the technical problem is: a kind of powder metallurgy pressing mould, including base, the base is directly above and is equipped with lower mould, the top of the base and close to the four corners place can be detachably connected with lifting column, the output end of the lifting column can be detachably connected at the four corners of lower mould, the side of the base can be detachably connected with vertical plate, one end of the vertical plate can be detachably embedded with hydraulic device, the output end of the hydraulic device can be detachably connected with fixed plate, the side wall opposite to the fixed plate and lower mould can be detachably connected with upper mould.

[0005] As a preferred technical scheme of the utility model, the middle of the top side wall of the lower mould is provided with a cavity, the top of the base and the side wall opposite to the cavity can be detachably connected with a top column, the shape of the top end of the top column corresponds to the cavity, and the top column is movably inserted into the cavity.

[0006] As a preferred technical scheme of the utility model, the bottom of the fixed plate is rotatably connected with two side plates, the opposite bottom side walls of the two side plates are fixedly connected with a supporting plate, one end of the supporting plate is fixedly connected with a front baffle on the upper edge, the inner wall of the supporting plate and the front baffle is fixedly connected with a non-slip pad, and the end of the side plate away from the rotation point is connected with the side wall of the fixed plate through screw.

[0007] As a preferred technical scheme of the utility model, the upper mould is placed on the inner wall of the supporting plate through the two side edges, one side of the bottom of the fixed plate is fixedly connected with a plugging plate, the side wall opposite to the side plate of the plugging plate is fixedly connected with a rubber pad, the bottom edge of the rubber pad is of an inclined structure, the four corners of the upper mould are all provided with a limiting groove, the bottom of the fixed plate and the side wall opposite to the limiting groove are fixedly connected with a positioning column, the positioning column is inserted into the limiting groove, and the bottom side wall of the upper mould and the side wall opposite to the mould cavity are fixedly connected with a mould core.

[0008] As a preferred technical scheme of the utility model, the lower mould is provided with an inner groove at both sides of the mould cavity, a double-head motor is detachably embedded in the middle of the inner groove, and the two ends of the double-head motor are detachably connected with a linkage shaft, one end of the linkage shaft is fixedly connected with a gear, and the bottom of the inner groove is provided with an open structure.

[0009] As a preferred technical scheme of the utility model, a pair of extension plates are fixedly connected to the top of the position opposite to the two end corners of the mould cavity in the inner groove, a striking plate is rotatably connected to the extension plate through a torsional spring, the striking plate is of an L-shaped structure, and the horizontal end is attached to the inner wall of the inner groove close to the mould cavity, and the bottom end of the striking plate is coincident with the teeth on the gear.

[0010] The utility model has the following advantages: when the mould needs to be replaced, the lower mould is removed from the lifting column, then the screws on the side plate are removed, the side plate is then tilted downwards along the rotating point with the fixed plate, the upper mould is then removed by the staff, the new upper mould is then placed in the side plate, the side plate is then pushed upwards until it is attached to the fixed plate, the limiting groove is then sleeved on the positioning column during the pushing, four-point positioning is realized, displacement of the upper mould during frequent lifting is avoided, the rubber pad fixed to the side wall of the plugging plate can press the upper mould after closing, the stability of the upper mould is improved, the screws are then tightened, a large number of screws are saved, the time wasted by removing multiple screws is avoided, the convenience of replacing the upper mould is improved, and the overall processing efficiency is improved. ACCURACY OF DRAWINGS

[0011] Fig. 1 It is a three-dimensional structure schematic diagram of a preferred embodiment of the utility model;

[0012] Fig. 2 It is a fixed plate bottom structure schematic diagram of a preferred embodiment of the utility model;

[0013] Fig. 3 It is a lower mould sectional structure schematic diagram of a preferred embodiment of the utility model.

[0014] Explanation of reference signs: 1, base; 2, lower mold; 3, mold cavity; 4, top column; 5, lifting column; 6, vertical plate; 7, hydraulic device; 8, fixed plate; 9, side plate; 10, supporting plate; 11, front baffle; 12, blocking plate; 13, positioning column; 14, upper mold; 15, limiting groove; 16, inner groove; 17, gear; 18, linkage shaft; 19, extension plate; 20, impact plate. DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with the drawings.

[0016] Please see Figs. 1-3 The utility model discloses a powder metallurgy pressing die, including base 1, the lower mold 2 is set up at the top of base 1, the lifting column 5 of detachable connection is set up at the top of base 1 and near the four corners, the output end of lifting column 5 is detachable connection at the four corners of lower mold 2, the vertical plate 6 of detachable connection is set up at one side of base 1, one end of vertical plate 6 is detachably embedded connection hydraulic device 7, the output end of hydraulic device 7 is detachable connection fixed plate 8, the upper mold 14 of detachable connection is set up at the opposite side wall of fixed plate 8 and lower mold 2, the middle of the top side wall of lower mold 2 is provided with mold cavity 3, the top side wall of base 1 and the opposite side wall of mold cavity 3 are detachable connection top column 4, and the shape of the top end of top column 4 corresponds to mold cavity 3 and is movably inserted into mold cavity 3;

[0017] The bottom of fixed plate 8 is rotatably connected with two side plates 9, the opposite bottom side walls of the two side plates 9 are fixedly connected with supporting plate 10, the upper edge of one end of supporting plate 10 is fixedly connected with front baffle 11, the inner wall of supporting plate 10 and front baffle 11 is fixedly connected with antiskid pad, the end of side plate 9 away from the rotation point is connected on the side wall of fixed plate 8 through screw, the upper mold 14 is placed on the inner wall of supporting plate 10 through the two side edges, one side of the bottom of fixed plate 8 is fixedly connected with blocking plate 12, the side wall opposite to side plate 9 of blocking plate 12 is fixedly connected with rubber pad, and the bottom edge of rubber pad is of inclined structure, the four corners of upper mold 14 are all provided with limiting groove 15, the side wall opposite to limiting groove 15 of the bottom of fixed plate 8 is fixedly connected with positioning column 13, and positioning column 13 is inserted into limiting groove 15, and the side wall opposite to mold cavity 3 of the bottom side wall of upper mold 14 is fixedly connected with mold core.

[0018] As the technical effect of the present scheme is: because only two screws, so as to greatly save the time of disassembly of multiple screws and delay, improve the convenience of disassembly, thereby improve the efficiency of the upper die 14 replacement, after the screw is removed, the side plate 9 is opened downward, then the upper die 14 is taken out from the side plate 9, after the new one is put in, the side plate 9 is pushed up and the fixed plate 8 is pasted, finally the screw is tightened and positioned, the whole process is smooth, there is no need to repeat the operation step, and through the setting of the supporting plate 10 and the front baffle 11, the stability of the upper die 14 can be guaranteed, and through the setting of the positioning column 13, the upper die 14 can be positioned in four points, so that the upper die 14 is always in the middle, and the displacement problem caused by frequent lifting can be eliminated, through the setting of the blocking plate 12, the upper die 14 can be blocked, and through the rubber pad, the upper die 14 can be extruded, so as to improve the stability of the upper die 14.

[0019] The inner groove 16 is arranged in the lower die 2 and located at both sides of the mold cavity 3, a double-head motor is detachably embedded and connected in the middle of the inner groove 16, both ends of the double-head motor are detachably connected with a linkage shaft 18, one end of the linkage shaft 18 is fixedly connected with a gear 17, the bottom of the inner groove 16 is provided as an open structure, a pair of extension plates 19 are fixedly connected at the top of the inner groove 16 and opposite to the two end corners of the mold cavity 3, a torsional spring is rotatably connected with a striking plate 20 in the extension plate 19, the striking plate 20 is L-shaped structure, and the horizontal end is attached to the inner wall of the inner groove 16 close to the mold cavity 3, the bottom end of the striking plate 20 coincides with the teeth on the gear 17.

[0020] As the technical effect of the present scheme is: after the powder is put into the mold cavity 3, the double-head motor in the inner groove 16 is started to drive the corresponding two gears 17 to rotate, the striking plate 20 is driven to rotate along the point connected with the torsional spring through the teeth on the gear 17, the horizontal end of the striking plate 20 drives the striking plate 20 away from the inner wall of the inner groove 16, after the bottom end of the striking plate 20 leaves the teeth, the striking plate 20 is driven to reset quickly under the action of the torsional spring, so as to hit the inner wall of the inner groove 16 through the horizontal end of the striking plate 20, and the powder in the mold cavity 3 is vibrated in this way, so as to adjust the powder to a uniform and flat state, and improve the production quality.

[0021] Specifically, the utility model discloses when using, the screw on side edge board 9 is unloaded, then old upper die 14 is taken out from inside side edge board 9, after putting new upper die 14 in two side edge boards 9, the positioning of upper die 14 can be carried out through the setting tray 10 and front baffle 11, guarantee the stability of upper die 14 placement, then side edge board 9 is lifted upwards, with the rotation of side edge board 9, it is attached with the bottom side wall of fixed plate 8, and the top side wall of upper die 14 will also be attached on the bottom side wall of fixed plate 8, and the limiting groove 15 will be connected on the corresponding positioning column 13, with the extrusion of rubber pad extruded on the blocking plate 12, the stability of upper die 14 placement can be improved, then new screw is tightened, and the replacement of upper die 14 is completed, and the convenience of upper die 14 replacement dismounting is improved;

[0022] The powder is injected into the mold cavity 3, and then the double-head motor is started to drive the impact plate 20 to move back and forth at high speed through the gear 17, and the high-speed impact of the impact plate 20 on the inner groove 16 can excite the powder in the mold cavity 3, thereby improving the uniformity and flatness of the powder distribution and improving the stability of production.

[0023] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements should also be considered as the protection scope of the utility model.

[0024] Other parts not described in the utility model are all prior art, so they are not described here.

[0025] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A powder metallurgy pressing mold, comprising a base (1), characterized in that, A lower mold (2) is provided directly above the base (1). Lifting columns (5) are detachably connected to the top of the base (1) and near the four corners. The output end of the lifting column (5) is detachably connected to the four corners of the lower mold (2). A vertical plate (6) is detachably connected to one side of the base (1). A hydraulic device (7) is detachably embedded at one end of the vertical plate (6). A fixing plate (8) is detachably connected to the output end of the hydraulic device (7). An upper mold (14) is detachably connected to the side wall of the fixing plate (8) opposite to the lower mold (2).

2. The powder metallurgy pressing mold as described in claim 1, characterized in that, The lower mold (2) has a mold cavity (3) in the middle of the top side wall. The top of the base (1) and the side wall opposite to the mold cavity (3) are detachably connected to a top post (4). The shape of the top of the top post (4) corresponds to the mold cavity (3) and is movably inserted into the mold cavity (3).

3. The powder metallurgy pressing mold as described in claim 1, characterized in that, The bottom of the fixed plate (8) is rotatably connected to two side plates (9). The bottom side walls of the two side plates (9) are fixedly connected to a support plate (10). A front baffle (11) is fixedly connected to the upper edge of one end of the support plate (10). Anti-slip pads are fixedly connected to the inner walls of the support plate (10) and the front baffle (11). The end of the side plate (9) away from the rotation point is connected to the side wall of the fixed plate (8) by screws.

4. The powder metallurgy pressing mold as described in claim 1, characterized in that, The upper mold (14) is placed on the inner wall of the support plate (10) through both sides. A sealing plate (12) is fixedly connected to one side of the bottom of the fixing plate (8). A rubber pad is fixedly connected to the side wall opposite to the side plate (9) of the sealing plate (12), and the bottom edge of the rubber pad is inclined. A limiting groove (15) is opened through the four corners of the upper mold (14). A positioning post (13) is fixedly connected to the bottom of the fixing plate (8) and the side wall opposite to the limiting groove (15), and the positioning post (13) is inserted into the limiting groove (15). A mold core is fixedly connected to the bottom side wall of the upper mold (14) and the side wall opposite to the mold cavity (3).

5. A powder metallurgy pressing mold as described in claim 1, characterized in that, The lower mold (2) has an inner groove (16) on both sides of the mold cavity (3). A double-headed motor is detachably embedded in the middle of the inner groove (16), and both ends of the double-headed motor are detachably connected to a linkage shaft (18). One end of the linkage shaft (18) is fixedly connected to a gear (17). The bottom of the inner groove (16) is set as an open structure.

6. A powder metallurgy pressing mold as described in claim 5, characterized in that, A pair of extension plates (19) are fixedly connected to the top of the inner groove (16) at a position opposite to the two corners of the mold cavity (3). An impact plate (20) is rotatably connected to the extension plate (19) through a torsion spring. The impact plate (20) has an L-shaped structure, and one end of it is attached to the inner wall of the inner groove (16) near the mold cavity (3). The bottom end of the impact plate (20) coincides with the teeth on the gear (17).

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