CN2383664Y - Straight motion type hydraulic mould clamp - Google Patents

Abstract

The utility model relates to a straight motion type hydraulic mould clamp. Four sets of pressing cylinders are uniformly installed on a movable template, and a piston rod of each pressing cylinder is extended with a guiding rod of which the pole diameter is slightly bigger or slightly smaller than the diameter of each piston rod. Each pressing cylinder with the identical diameter as the guiding rod is arranged on the movable template in diagonal relation commonly, and a guiding hole is penetrated on each piston rod axially and is communicated with an accommodating room which is installed in each piston rod. A logical valve is arranged in each accommodating room, and each piston rod is provided with a through hole of which the flow passage is communicated with each accommodating room. A left and a right oil rooms of each pressing cylinder are communicated and flowed to each other. Hereof, the utility model has the advantages of quick action journey, and the utility model can actually clamp a mould and is easy to demould.

Description

Direct Action Type oil pressure clamping die device

The utility model relates to a kind of Direct Action Type oil pressure clamping die device.

At present, Direct Action Type oil pressure clamping Institutions Development is that two big kinds are arranged so far, promptly be divided into middle-size and small-size Direct Action Type and large-scale combined type oil pressure clamping mechanism, at first with regard to large-scale composite mechanism form, wherein, be that a kind of relevant design is as shown in Figure 8 arranged, its structure is mainly utilized the little oil hydraulic cylinder B on the holder A to pass collapsible form C and is done the total travel displacement, and with after the mould that is locked in holder A engages, be little displacement pushing and pressing collapsible form C with the big oil hydraulic cylinder E that converts among the mechanical device D on the collapsible form C, finish the clamping action of two-period form; Yet this kind structure belongs to a large-scale oil pressure clamping mechanism, very take up space, and it utilizes the nut D1 clamping location of mechanical device D two semicircles, and it is very complicated to convert the manner of execution that big oil hydraulic cylinder E pressurizes again to, also improves relatively on cost; Moreover this collapsible form C rear side is a very complicated structure in order to the mechanical device D of location usefulness, and its cost aspect is real for the dealer to be a burden greatly; And require action fast with regard to present middle-size and small-size machine, under the less prerequisite in space, be difficult to the big and lumbering combined type oil pressure clamping machine of receiving volume at all, thus present be main flow in the same trade still with middle-size and small-size Direct Action Type oil pressure clamping mechanism; As shown in Figure 9, it mainly drives collapsible form C relative fixed seat A clamping by a little cylinder pressure F; At Guan Mohou, make big cylinder pressure G that interior pressurising can make collapsible form C be butted on holder A really again, in general, be provided with big or small cylinder pressure G, F in this structure, its manner of execution drives big cylinder pressure G with little cylinder pressure F and advances fast, again by the clamping of exerting pressure of big cylinder pressure, but, when little cylinder pressure F drives big cylinder pressure G and advances fast, when needing the huge oil pipe of configuration to drive big cylinder pressure G for big cylinder pressure F to advance fast by the fuel tank fuel feeding, need the huge oil pipe of configuration to give big cylinder pressure F, yet huge oil pipe extremely take up space and makes volume seem very huge by the fuel tank fuel feeding; Other has a kind of relevant design as shown in figure 10; it also is Direct Action Type oil pressure clamping die device but generally is used for micromachine; it mainly utilizes 4 oil hydraulic cylinders (drawing system only lifts wherein, and two groups of cylinder pressures are example) on average to pass collapsible form C relative fixed seat A to carry out the clamping action; the detailed above-mentioned miniature Direct Action Type oil pressure clamping mechanism that sees; though specifically long-pending less advantage; yet, still not being difficult to find to remain in fact a little disappearance, main cause system is summarized as follows:

The above-mentioned structure of commonly using is when fast moving, the oil of cylinder pressure need be done the turnover of full flow, also increase relatively of oil pipe is gone in output relatively, also have the disappearance that huge oil pipe takes up space in the use, and according to the structural design of Figure 10 as can be known, four groups of cylinder pressures need drive eight oil pipes and do total travel and move, when oil pipe is too huge, can cause the inconvenience on moving, and then cause and can't be applicable to middle-size and small-size machine, the use aspect extremely limits.

Main purpose of the present utility model promptly is to provide a kind of Direct Action Type oil pressure clamping die device that can be applicable to middle-size and small-size and micromachine simultaneously, and its actuating length is quick, clamping mould really, and be easy to the demoulding.

For reaching above-mentioned purpose, on average being provided with four groups on the utility model collapsible form presses scarce, it is bigger and be slightly less than the guide bar in piston rod footpath that the piston rod of each cylinder pressure extends bar footpath, and with the cylinder pressure in the identical guide bar bar of tool footpath to be installed on the collapsible form jointly to angular dependence, and communicate with the room of interior tool to wearing guide hole at each piston rod, establish the tool logical valve in this room, piston rod is offered the through hole that runner communicates with room, and the grease chamber, the left and right sides of each cylinder pressure mutually stream that communicates.Thus, when opening logical valve, the cylinder pressure at collapsible form diagonal angle causes collapsible form to pass fast because of the differential circuit effect, close by the logical valve appropriateness in the piston rod, and required pressure when making hydraulic oil enter cylinder pressure the collapsible form clamping and the demoulding are provided.

After adopting said structure, the utility model actuating length is quick, clamping mould really, and be easy to the demoulding.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the allocation plan of the utility model cylinder pressure;

Fig. 3 is that the utility model closes mould schematic diagram ();

Fig. 4 is that the utility model closes mould schematic diagram (two);

Fig. 5 is the utility model die sinking schematic diagram ();

Fig. 6 is the utility model die sinking schematic diagram (two);

Fig. 7 is another enforcement illustration of the utility model;

The structural representation of product is commonly used by Fig. 8 system;

Fig. 9 is another structural representation of commonly using product;

Figure 10 system is a structural representation of commonly using product again.

At first, see also Fig. 1, shown in 2, the utility model is mainly held level with both hands at collapsible form 1 four and is equipped with four groups of cylinder pressures 2,2 ', 3,3 ', (in the following actuating length, cylinder pressure 2,2 ' is identical, and cylinder pressure 3,3 ' is identical, so two groups of cylinder pressures 2 are lifted by system at drawing, 3 is example, and cylinder pressure 2 ' 3 ' gives reference numerals no longer in addition), each cylinder pressure 2,3 piston rod 21,31 are respectively extended the guide bar 26 that latter end is established the tool thread segment, 36, and be fixedly arranged on same jointly because of reaching on the die holder 4, two groups of cylinder pressures 2 wherein, 2 ' guide bar 26 bars directly are to be slightly less than piston rod 21 bars footpath, angular dependence is arranged at fixedly on the die holder 4 all the other two groups of cylinder pressures 3 and be, 3 ' guide bar 36 bars footpath also is the angular dependence setting then greater than piston rod 31; Again, the piston rod 21,31 of each cylinder pressure 2,3 axially system wears the rooms 23,33 that guide hole 22,32 is suitable and piston rod 21,31 is interior and communicates, it in this room 23,33 built-in one group of logical valve 24,34, and axially offer runner 25,35 in piston rod 21,31, and wear number through holes 251,351 longitudinally in runner 25,35 peripheries, and but the hydraulic oil via through holes 251,351 in A, B in the voltage supply cylinder 2,3 (and C, D) grease chamber flows to intercommunication, again, this through hole 251,351 is that visual reality is required and offer several simultaneously, is beneficial to the hydraulic oil circulation.

Die clamp is fashionable in quick pass, see also Fig. 2, shown in 3, collapsible form 1 sets firmly mould 6 respectively with fixing die holder 4, when action, hydraulic oil system flows into cylinder pressure 2,2 ' A grease chamber, and make four groups of guide holes 22, pressure is draged in hydraulic oil oil return in 32, to control each cylinder pressure 2,2 ', 3, logical valve 24 in 3 ', 34 open, in this while cylinder pressure 2,2 ' is to go into oil by the A oilhole, and cylinder pressure 2, B oilhole in 2 ' and cylinder pressure 3,3 ' C oilhole is then for closing, cause cylinder pressure 3,3 ' D oilhole oil return is to oil groove, in the stroke of Yu Guanmo, cylinder pressure 2,2 ' is that initiatively cylinder pressure drive collapsible form 1 moves, and cylinder pressure 3,3 ' is passive cylinder pressure, again, in this state pushing cylinder 2, the about 2 ' grease chambeies are different with piston rod 21 bars footpath because of guide bar 26, and make compression area also different, when logical valve 24, during 34 unlatchings, because of grease chamber, the left and right sides can be by the runner intercommunication, there is area difference in the area system of its A grease chamber and B grease chamber, and make collapsible form 1 can be subjected to cylinder pressure 2,2 ' differential circuit effect and advancing fast, hydraulic oil in the D grease chamber suffers oppression and flows into the C grease chambeies via the logical valve of opening 34 at this moment, because of the oil that two-piston bar 21 area difference are had more is then discharged by the D oilhole, after treating collapsible form 1 and fixedly the mould 6 of die holder 4 being fitted (as shown in Figure 4), make hydraulic oil by each cylinder pressure 2 again, 2 ', 3,3 ' guide hole 22,32 close logical valve 24,34, two grease chambeies system is blocking state, make A, hydraulic oil in the B grease chamber can't intercommunication, and make hydraulic oil by cylinder pressure 2,2 ' A grease chamber and cylinder pressure 3, oil is gone into by 3 ' C grease chamber, and makes cylinder pressure 2,2 ' B grease chamber and cylinder pressure 3,3 ' D grease chamber is the oil return state; At this moment, each cylinder pressure all produces identical secondary pressure, and the mould 6 that collapsible form 1 and fixing die holder may be gone up can more closely pressing.

When die sinking, see also shown in Figure 5, each cylinder pressure 2,2 ', 3,3 ' logical valve 24,34 still close, hydraulic oil is then by cylinder pressure 2,2 ' B oilhole and cylinder pressure 3,3 ' D oilhole flows to, and by cylinder pressure 2,2 ' A oilhole and cylinder pressure 3,3 ' C oilhole oil return, at this moment, each cylinder pressure 2,2 ', 3, logical valve 24 in 3 ', 34 is a closed state, make cylinder pressure 3,3 ' C, the D grease chamber can't flow mutually can, be to be the high pressure demoulding at a slow speed this moment, make room 23 again, hydraulic oil in 33 is by guide hole 22,32 oil return releases of pressure, cause each cylinder pressure 2,2 ', 3,3 ' logical valve 24,34 open (as shown in Figure 6) once again and the hydraulic oil in each grease chamber can be circulated mutually, this moment cylinder pressure 3,3 ' makes cylinder pressure 3 for the active cylinder pressure, 3 ' D oilhole continues oil-feed, cylinder pressure 2,2 ' B oilhole and cylinder pressure 3,3 ' C oilhole is closed, and the oil return of A oilhole causes collapsible form 1 because of cylinder pressure 3,3 ' differential circuit effect and be with from mould 6 and recess fast.

In addition, the utility model fixedly die holder also has the preferred embodiment can be as shown in Figure 7, system makes fixedly die holder 5 can correspondingly lead this bar 26,36 thread segment place is provided with helicoid pinion 51 in the number, 52, and fixing die holder 5 central authorities one gear wheel 53 is set and with each pinion 51,52 are meshing with each other, when making the reduction of collapsible form 1 slippage stroke at the thicker mould 6 of installing, but turn gear wheel 53, by pinion 51, the screw thread and the guide bar 26 of tool in 52,36 thread segment screws togather, and then force guide bar 26,36 pass the whole distance of collapsible forms 1 back transposition, are suitable for the mould of different-thickness and keep the clamping stroke of collapsible form 1 constant.

Claims (1)

1, a kind of Direct Action Type oil pressure clamping die device, it is characterized in that: on average be provided with four groups on the collapsible form and press scarce, it is bigger and be slightly less than the guide bar in piston rod footpath that the piston rod of each cylinder pressure extends bar footpath, and with the cylinder pressure in the identical guide bar bar of tool footpath to be installed on the collapsible form jointly to angular dependence, and communicate with the room of interior tool to wearing guide hole at each piston rod, establish the tool logical valve in this room, piston rod is offered the through hole that runner communicates with room, and the grease chamber, the left and right sides of each cylinder pressure mutually stream that communicates.

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