CN201042854Y

CN201042854Y - Mechanism for regulating float bottom dead centre of core rod of powder forming machine mould base

Info

Publication number: CN201042854Y
Application number: CNU2007201082818U
Authority: CN
Inventors: 严培义; 严俏敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-18
Filing date: 2007-04-18
Publication date: 2008-04-02
Anticipated expiration: 2017-04-18

Abstract

The utility model relates to a powder forming machine mould frame mandrel floating lower dead center adjustment mechanism, which is a whole structure composed of a cylinder connected with a piston rod and a cylinder pedestal with an air inlet. The cylinder pedestal is provided with a worm wheel meshed with a worm and connected with a lower bumper block. The worm wheel is connected with a lower bottom plate. The lower bumper block is fixed on a baffler inside the lower bottom plate. The locator key of the lower bottom plate is combined with the limit groove of the lower bumper block. The operation of the adjustment mechanism is simple and convenient, and the worm wheel can adjust the stroke position of the piston bar taking the upper end face of the lower bumper block as a lower dead center only by rotating the worm forwards or backwards. Compared with the conventional piston bar upper position adjustment approach that the piston bar needs to go down to the ground base pit, the screw can then be rotated to adjust the nut upper-and-down and the position on the piston bar, the utility model saves time and labor, and greatly reduces the labor intensity of the worker; in addition, the adjustment mechanism has advantages of high adjustment accuracy and few errors, which greatly enhances and guarantees the machining precision of the pressed product.

Description

The powder forming machine mould bases plug lower dead center guiding mechanism that floats

Technical field

The utility model relates to the vitals in a kind of powder forming machine, is used for the unsteady lower dead center guiding mechanism of powder forming machine mould bases plug that the height of mould bases plug position is regulated.

Background technology

Because of the disposable part that suppresses high accuracy, many steps of powder forming function, and have applied widely, production efficiency and high characteristics of stock utilization, be subjected to the favor of enterprise deeply, now be widely used in the compacting of pulverulent products such as various metals, pottery, bakelite, and the shape of stampings also becomes increasingly complex, the part that many step shapes are arranged, centre have part, the centre of through hole to have the part of interior many step through-holes all can suppress.

Number of patent application CN200510062212.3 " bed die floating regulating mechanism of powder forming machine " just provides a kind of distance that former floats that is used to regulate downwards, with the size of assurance complex parts stampings size and the uniformity of stampings density, but this floating regulating mechanism only can be used for the adjusting of floating of the shape of outer step on the part, can't be used for the lower dead center that has interior many step through-holes part to float is regulated.

On the used powder forming machine of existing enterprise, also there is not special-purpose mould bases plug floating regulating mechanism, if many step through-holes part in will having produced, have to adopt on piston rod and will be screwed whole adjusting nut by the two halves climbing, adjusting nut is moved up and down on piston rod, carry out the lower dead center adjusting that plug floats, the cushion block of the various different sizes of cushioning under limiting plate, carry out the top dead centre that plug floats and regulate, with the stampings of many step through-holes in the band that guarantees to process different size.

Because of the part that enterprise produces various in style, a kind of product of every production just needs to regulate the position of an adjusting nut, because of adjusting nut is mounted on the piston rod, the powder forming machine piston rod is in base portion, and base is mounted in the foundation pit again, each operator must descend in the foundation pit and could regulate, because of the little very difficult operation in foundation pit position, the parts dismounting bothers, wastes time and energy, labour intensity is big, as shown in Figure 2,18 for adjustment nut, 19 is a limiting plate, and 20 is cushion block.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of powder forming machine mould bases plug lower dead center guiding mechanism that floats is provided, even to guarantee complex parts stampings density, operation, adjusting simply, have conveniently not only alleviated labour intensity but also improved operating efficiency, and the degree of regulation height.

The technical scheme in the invention for solving the above technical problem is: the powder forming machine mould bases plug lower dead center guiding mechanism that floats, connecting into integral body by the cylinder that is connected with piston rod with the air cylinder base that has air inlet constitutes, the worm gear that is connected with lower position block with worm engaging is installed on the described air cylinder base is connected with lower shoe, described lower position block also is fixed on the baffle plate in the lower shoe, and the positioning key on the described lower shoe cooperates with stopper slot on the lower position block.

Compared with prior art, advantage of the present utility model is: this mechanism structure is simple, only on original air cylinder base, increase the worm screw be connected with worm gear and the baffle plate of upper limit position block and fixed upper limit position plate, lower shoe, and this part is easily processed, simultaneously simple to operate, convenient, only just needing or the backward rotation worm gear, worm screw just can lower position block the upper surface be that lower dead center is adjusted the travel position of piston rod, than needing originally down in foundation pit, could open on the adjusting nut by the turn screw, move down, the method of operating of regulating its position on piston rod will save time, laborsaving, alleviated working strength of workers greatly, this guiding mechanism degree of regulation height in addition, error is little, improves greatly again, guaranteed the machining accuracy of stampings.

Description of drawings

Fig. 1, structural representation of the present utility model.

Fig. 2, prior art structural representation (removing the adjustment state of mould plug).

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Lower position block 6 is a stairstepping, and periphery has external screw thread, and one or more stopper slot 15 is arranged on the rear surface.

Worm screw 8 engagements of in the middle of installing in the middle of the lower surface of air cylinder base 9, installing on the worm gear 7 of band screw and the air cylinder base inwall.

Lower position block 6 usefulness on it screw in the middle of screw thread and the worm gear 7 connect into integral body, its lower end is screwed on baffle plate 12, baffle plate 12 cunnings fit in the trapezoidal hole of lower shoe 11 centres, and the trapezoidal hole inward flange has been screwed one or more positioning key 10.

With screw cylinder 5, air cylinder base 9, lower shoe 11 are fixed into integral body, are screwed drag hook 14 11 times at lower shoe, lower main axis contiguous block 13 is connected on the drag hook 14.

During use, promoting piston rod 4 by the 16 input pressure gas of the air inlet on the air cylinder base 9 moves up, and drive in the former that moves up on pull bar 3, pressing plate 2, the mould plug 1 on the mould bases and adorn powder, under sweep away and move powder pressing, air inlet 17 air inlets from the cylinder 5 again, and with the power of plug powder forming piston rod 4 is descended, drive mould plug 1 simultaneously and descend, (figure draws).The lower dead center guiding mechanism can be regulated if product size does not reach processing request in moulding compacting back at this moment, and the height of regulating piston bar 4 travel position is that lower dead center is carried out spacing adjusting with the upper surface of lower position block 6, just can suppress the qualified product of size.

If the product that is pressed into is slightly little, at this moment only need to rotate (electronic or manual) worm screw 8, driving worm gear 7 rotates, worm gear 7 rotates with regard to driving the lower position block 6 that links together with it and moves up, then the stroke of piston rod 4 just shortens, the stroke that mould plug 1 is made progress also shortens, and the stampings step degree of depth is increased.

On the contrary, counter-rotation worm screw 8, worm gear 7 then make lower position block 6 move down, and then the stroke of piston rod 4 is elongated, and the downward stroke of mould plug 1 is also elongated, and the stampings step is shoaled.

Claims

1. the powder forming machine mould bases plug lower dead center guiding mechanism that floats, connect into whole formation by cylinder that is connected with piston rod (4) (5) and the air cylinder base (9) that has air inlet (16), it is characterized in that the worm gear (7) that is connected with lower position block (6) with worm screw (8) engagement is installed on the described air cylinder base (9), be connected with lower shoe (11); Described lower position block (6) also is fixed on the baffle plate (12) in the lower shoe (11), and the positioning key (10) on the described lower shoe (11) cooperates with stopper slot (15) on the lower position block (6).

2. worm screw (8) engagement of installing on the powder forming machine mould bases plug according to claim 1 lower dead center guiding mechanism that floats, the worm gear (7) that it is characterized in that band screw in the middle of installing in the middle of the lower surface of air cylinder base (9) and air cylinder base inwall.

3. the powder forming machine mould bases plug according to claim 1 lower dead center guiding mechanism that floats, it is characterized in that described lower position block (6) is a stairstepping, periphery has external screw thread, one or more stopper slot (15) is arranged on the rear surface, lower position block (6) connects into integral body with the screw in the middle of screw thread on it and the worm gear (7), and the lower end is screwed on baffle plate (12).

4. the powder forming machine mould bases plug according to claim 1 lower dead center guiding mechanism that floats, it is characterized in that in the middle of the described lower shoe (11) trapezoidal hole being arranged, baffle plate (12) is sliding to be fitted in the trapezoidal hole, and the trapezoidal hole inward flange has been screwed one or more positioning key (10).