CN2201191Y

CN2201191Y - Punch press buffer

Info

Publication number: CN2201191Y
Application number: CN 94220519
Authority: CN
Inventors: 林再富
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-02
Filing date: 1994-09-02
Publication date: 1995-06-21
Anticipated expiration: 2004-09-02

Abstract

The utility model relates to a punch press buffer, which is mainly fixed at the lower part of machine tables. The utility model is provided with a cylinder which can rise and fall along a piston; oil storage space which is positioned between the cylinder and the top surface of the piston is fill with oil liquids; the top surface of the machine table is provided with a lower die; the circumference of the lower die is provided with a movable ring body; a rod which is positioned at the bottom of the ring body is connected with the cylinder of a buffer. When an upper die falls, the ring body which is positioned at the circumference of the lower die is pressed, and meanwhile, the cylinder is pushed to move downward, and the force of damping can be obtained.

Description

Punch press buffer

The utility model is a kind of punch press press buffer unit, refers to a kind of safety means that are applicable to punch press machinery especially, to prolong the service life of mould and board face.

General punch press is to fix a counterdie on the board face when working, then establish a liftable patrix with respect to fixed counterdie top, during moulding material is placed the top of counterdie, by the patrix impact that constantly descends, make material in two die for molding, and owing to need great impulse force during punching press, injure mould easily, so being used in the die life of punch press usually can be not oversize, especially with the preferable material punching out flakiness shape product (as bowl-type) of ductility, the formation of its perisporium is that mat patrix stamping material extends downwards, at this moment, if the design of patrix stroke is improper, or because of often using when leaving the tram, very easily make patrix and counterdie root edge, even the board face clashes into mutually, cause the damage of equipment.

In view of this; main purpose of the present utility model is to provide a kind of punch press buffer unit; one buffer mainly is fixed at the board below by a standing screw; its outer sheathed one liftable cylinder body; this cylinder body can be connected with the counterdie periphery ring body of board end face, when the ring body that is sheathed on the counterdie periphery is subjected to the compacting of patrix, cylinder body is slowly descended; and then make the perisporium of material extend shaping downwards, be not subjected to too big impact, prolong its service life with the protection mould.

For achieving the above object, the utility model provides a kind of punch press buffer unit, mainly on the board face, set firmly a counterdie, its characteristics are: the ring body that is provided with movable lifting around the counterdie, reaching the buffer that extends the body of rod downwards and be located at board face below bottom this ring body is connected, this buffer is mainly by a base, spiral shell is located at the piston of base top, be sheathed on the outer cylinder body of piston and pass the cylinder body top and hollow sleeve that the base spiral shell is established is formed, the body of rod that extend downwards aforementioned ring body bottom promptly is connected with the cylinder body of buffer, and the sleeve pipe top also is provided with the retaining edge that is blocked in cylinder deck, establish one in base in addition and run through end face and extraneous oil circuit, and establish a path that cylinder interior is communicated with the base oil circuit in piston.

Described punch press buffer unit, its characteristics are: described buffer is established an axial through hole in base central authorities, and sleeve pipe also is provided with relative through hole, and through hole and through hole are equipped with the standing screw that a top can be fixed at board, and standing screw bottom and be provided with a block that is butted on base end face.

Implement after the above-mentioned design; advantage of the present utility model is and can establishes a ring body in the counterdie periphery that is fixed in punch press board end face; this ring body also can be connected with cylinder body; when patrix decline punching press; cylinder body is slowly descended; and then the perisporium of material extended shaping downwards, be not subjected to too big impact with protection mould and board, to prolong its service life.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Fig. 1 is an outward appearance exploded view of the present utility model.

Fig. 2 is that combination section in plane of the present utility model is implemented illustration.

See also Fig. 1, shown in 2, the utility model is mainly by a base 10, spiral shell is located at the piston 20 at base 10 tops, be sheathed on the outer cylinder body 30 of piston 20 and pass cylinder body 30 tops and hollow sleeve 40 that base 10 spiral shells are established is formed, and whole group buffer is fixed in board 60 belows by the standing screw 50 in the middle of being located at again, wherein, the described base 10 lower end peripheries shoulder 11 that stretches out, its central authorities are provided with an axial through hole 12, these through hole 12 upper ends are provided with the bigger screw of a diameter 13, establish sleeve pipe 40 with spiral shell, and be provided with pin thread in base 10 top external diameters, establish piston 20 with spiral shell, and be provided with one in these base 10 end face perisporiums and run through downward extension and through transferring to the oil circuit 14 of shoulder 11 to communicate with the external world.

Piston 20 central authorities that this spiral shell is located at base 10 tops are provided with an axial through bore 21, pass with screw 13 spiral shells of base 10 solid for sleeve pipe 40, establish an axial passageway 22 of extending downwards from piston 20 end faces in addition, the ring oil guide groove 221 concentric with piston 20 established in these path 22 bottoms, so that path 22 communicates with the oil circuit 14 of base 10.

Being sheathed on piston 20 outer cylinder bodies 30 is the cylindric of downwardly facing opening, inside has one in order to the oily space 31 of putting of oil storage, this puts oily space 31 slightly larger in diameter in piston 20 external diameters, so that lifting displacement outside piston 20 is established a through hole 32 that supplies sleeve pipe 40 to pass in cylinder body 30 roofs in addition.

Sleeve pipe 40 central authorities establish a through hole 41, and the bottom external diameter is made as screw rod 42 to be fixed at base 10, and other deviates from for preventing cylinder body 30, and establishes the retaining edge 42 of an external diameter greater than cylinder body 30 through holes 32 in sleeve pipe 40 tops.

When assembling above-mentioned each member, piston 20 is fixed at base 10 tops to be sheathed on cylinder body 30 outside the piston 20, again sleeve pipe 40 is passed through hole 32, piston 20, the perforation 21 of cylinder body 30, and establish with screw 13 spiral shells of base 10, the above-mentioned oil sealing that also is provided with between the member in twos spills to prevent to be filled in the fluid that cylinder body 30 puts in the oily space 31.

Please consult shown in Figure 2 when the buffer of assembling is finished in enforcement again, be in base 10 through holes 12 and sleeve pipe 40 through holes 41, to wear a standing screw 50, standing screw 50 tops are fixed at board 60, a block 51 is established in bottom then spiral shell, in case base 10 is deviate from, concentrate fluid putting in the oily space 31 between cylinder body 30 and piston 20 end faces on from the oil circuit 14 of base 10 in addition, cylinder body 30 is risen be held in the retaining edge 42 of sleeve pipe 40, and be fixed in the ring body 62 that counterdie 61 peripheries on the board 60 are provided with a liftable activity, several bodies of rod 63 are equipped with in these ring body 62 bottoms, be connected with cylinder body 30 end faces to pass board 60, when patrix 64 descends, on will placing, counterdie 64, when the material 65 between 61 is down suppressed, material will prolong counterdie 61 perisporiums and down extend shaping, patrix 64 bottom surfaces that descend then can push against is located at counterdie 61 ring body 62 declines on every side, and then promote cylinder body 30 of the present utility model toward bottom offset, at this moment, be full of put oily space 31 fluid then pressurized from piston 20, path 22, the guide groove 221 of flowing through, flow into base 10 again, oil circuit 14 then outwards disengages, enter oil storage tank (because pressure regulator valve and all non-the utility model emphasis of oil storage tank through a pressure regulator valve, so do not give unnecessary details), treat that patrix 64 removes the pressure to cylinder body 30 toward rising, when interior chamber's pressure drop is hanged down, fluid in the oil storage tank refluxes through pressure regulator valve again, oil circuit 14 by buffer base 10 flows into cylinder body 30 inside, for the drawing again of patrix 64.By above-mentioned action as can be known, can get a buffering strength, make patrix directly not impact counterdie root edge or board, prolong the service life of mould by setting of the present utility model.

Claims

1, a kind of punch press buffer unit, mainly on the board face, set firmly a counterdie, it is characterized in that, be provided with the ring body of movable lifting around the counterdie, this ring body bottom and extend the body of rod downwards and be located at the board face below a buffer be connected, this buffer is mainly by a base, spiral shell is located at the piston of base top, be sheathed on the outer cylinder body of piston and pass the cylinder body top and hollow sleeve that the base spiral shell is established, the body of rod that body extends downwards at the bottom of the aforementioned ring body promptly is connected with the cylinder body of buffer, and sleeve pipe top and be provided with the retaining edge that is blocked in cylinder deck, establish one in base in addition and run through end face and extraneous oil circuit, and establish a path that cylinder interior is communicated with the base oil circuit in piston.

2, punch press buffer unit according to claim 1, it is characterized in that: described buffer is established an axial through hole in base central authorities, and sleeve pipe also is provided with relative through hole, through hole and through hole are equipped with the standing screw that a top can be fixed at board, and standing screw bottom and be provided with a block that is butted on base end face.