CN2149285Y

CN2149285Y - Joint for link-lever and threaded-rod of punching machine

Info

Publication number: CN2149285Y
Application number: CN 93203055
Authority: CN
Inventors: 纪金怀
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-18
Filing date: 1993-02-18
Publication date: 1993-12-15
Anticipated expiration: 2003-02-18

Abstract

The utility model relates to a joint for link-lever and threaded-rod of punching machine, in which a closure section in the shape of ladder is arranged on which a threaded rod is positioned at the accommodate chamber site of connecting rods. The fastener for the safety belt to penetrate and to fix is arranged on the outboard closure section of a connecting rod and a threaded rod; comprising a first position guiding ring, a location base, a second position guiding ring and hydraulic oil. A screw connecting section is formed on which a location base is positioned at the site of the accommodate chamber, and the connecting rod is provided with an oil hole. The interval of the first position guiding ring and the second position guiding ring is provided with hydraulic oil which can form pressure with the character of mean square and the closure section of the threaded rod is fixed.

Description

Joint for link-lever and threaded-rod of punching machine

The utility model relates to a kind of press, particularly a kind ofly makes screw rod locking live and can upper and lowerly not move when impacting, so as to make bottom dead centre stable, reduce vibrations and increase the connecting rod of press of die life and the locking device between screw rod.

Some position of the car body of general automobile, locomotive, bus and train more or less all needs press to come processing and fabricating.Certainly, press all need use as the assembly of aluminium door processing and fabricating, metal spike etc., so press is a kind of indispensable machine for the manufacturer in others.See also shown in Figure 1, it is the assembling schematic diagram of general connecting rod of press (1) in the past and screw rod (2), connecting rod (1) articulates with bent axle (3), and in connecting rod (1) bottom, be formed with bolt apertures (105), threaded portion (201) for screw rod (2) is spirally connected, and screw rod (2) and connecting rod (1) are connected.So, to do under the rotary oscillation at bent axle (3) drivening rod (1), screw rod (2) also can be followed connecting rod (1) action simultaneously, and drives upper and lower the moving of slide block (4) and the impact workpiece.But along with the frequent problem of using that is in use produced that reaches, press still has undesirable part so far:

Please consult shown in Fig. 2,3 again, it is the schematic diagram between screw thread and screw thread after the bolt apertures (105) of the spiro union portion (201) of screw rod (2) and connecting rod (1) screws togather, on scheming, can find out when general using screw thread and engage thread are spirally connected, can contact each other with screw thread one side at screw thread, opposite side then forms clearance D (generally about 0.08 to 0.1mm).This is because when being spirally connected, and is spirally connected smooth and easyly for making, and screw thread and screw thread can not be and fit tightly, otherwise be difficult to (even can't) rotate, so clearance D is must existence.Please consult Fig. 4,5 again, and when slide block (4) impacts workpiece (200), below the position of clearance D can change to.Because move down the moment of contact workpiece (200) when slide block (4), relation according to forst law of motion active force and reaction force, slide block (4) forms impulse force to workpiece (200), it is identical but strength that direction is opposite puts on slide block (4) also to have size, so, this strength can cause clearance D to move down, and in slide block (4) moment contact workpiece (200), be in die cavity (101) place of mould (100) because of workpiece (200), so, applying a reaction force, also cause its displacement that moves down in the slide block (4).So, having only when below clearance D changes to from above, the screw thread of spiro union portion (201) props up the screw thread of screwed hole (105), makes slide block (4) when continuing to move down, and is only real impact workpiece (200).Can learn thus, in the whole impact process, must wait until that the screw thread of spiro union portion (201) props up the screw thread of screwed hole (105) (that is, below clearance D is positioned at), is only the beginning of real stamped workpieces (200).So, slide block (4) rigidly connects when touching workpiece (200), preparation before just doing to impact, but just rigidly connect and touch workpiece (200) to the generation that can cause vibrations between the real stamped workpieces (200) at slide block (4), and these vibrations once just produce once at every impact workpiece (200), and are not insignificant really to the loss destruction of mould, moreover the impact number of times of every day is all more than several thousand times (even several ten thousand times), so die life relatively just reduces a lot.And must wait until that clearance D is only the beginning of real impact below being positioned at, so, the control of its bottom dead centre (being slide block (4) the minimum part that the bottom arrived) just becomes difficult, this is for precision stamping processing, have ill effect to produce in fact, and stamped workpieces (200) quality is relatively not good yet.

The purpose of this utility model is to be to provide a kind of connecting rod of press and the locking device between the screw rod, by the locking device that is arranged between connecting rod and screw rod, it is spacing to make screw rod be fixed, so that when impacting, can upper and lowerly not move, therefore, it can keep impact stroke to stablize (bottom dead centre that is slide block is firm), and can reduce vibrations to produce and increased die life.

Based on above-mentioned purpose, in the connecting rod and the locking device between the screw rod of press of the present utility model, connecting rod is to be articulated in the bent axle pre-position that is subjected to the gear reduction transmission, be provided with accommodation chamber and extend upward in the connecting rod bottom, be installed with for the screw rod of bottom hub setting on the slide block top, when making connecting rod and then rotate beat simultaneously with convenient bent axle rotation, screw rod can be with the upper and lower slippage of slide block and impact working substance; It is characterized in that:

The accommodation chamber position that screw rod is positioned at connecting rod is provided with stepped locking part, locking device is arranged on outside the locking part of connecting rod and screw rod, locking device is first to lead position ring by what be installed in screw tip, be nested with in accommodation chamber and be installed in the positioning seat of connecting rod bottom, being positioned at second of positioning seat top leads the position ring and is filled in first, second hydraulic oil of leading an interannular constitutes, first, second to lead the external diameter of position ring identical with the accommodation chamber internal diameter, and being positioned at the position of accommodation chamber, positioning seat is formed with spiro union portion, the spiro union portion external diameter is also identical with the accommodation chamber internal diameter, be provided with oil filler point in the connecting rod pre-position, inject first for hydraulic oil, second leads in the ring interval, position, utilize all pressure of side's property that has of hydraulic oil formation, make the locking part of screw rod maintain static (promptly, eliminate in the locking part of screw rod and the gap between connecting rod) guarantee die life so that its impact stroke is fixed and reduce vibrations.

Below by most preferred embodiment and accompanying drawing the connecting rod of press of the present utility model and the locking device between the screw rod are elaborated, in the accompanying drawing:

Fig. 1 is connecting rod and screw combinations cutaway view in the past.

Fig. 2, the 4th, impacted in the past the gap between the connecting rod that causes and screw flight change schematic diagram.

Fig. 3 is the detailed enlarged drawing in 500 positions of Fig. 2.

Fig. 5 is the detailed enlarged drawing in 300 positions of Fig. 4.

Fig. 6 is the press schematic perspective view of the utility model preferred embodiment.

Fig. 7 is the connecting rod and the screw combinations cutaway view of the utility model preferred embodiment.

Fig. 8 is the connecting rod and the screw combinations cutaway view of another preferred embodiment of the utility model.

At first, see also shown in Fig. 6,7, locking device between the connecting rod of the utility model press and screw rod, it is the bent axle (11) that is pivoted in press (10) appropriate location, top, the power resources of bent axle (11) are to be subjected to be provided with its meshed gears reducing gear (12) by one, and be articulated with connecting rod (13) in bent axle (11) pre-position, connecting rod (13) bottom extends upward the accommodation chamber (131) that is provided with suitable size, so that be provided with for the screw rod (15) of bottom hub setting on slide block (14) top.So when bent axle (11) rotated, connecting rod (13) can rotate beat simultaneously with bent axle (11), so that screw rod (15) also is being with slide block (14) to do upper and lower slippage and impact working substance simultaneously; Feature of the present utility model is to be:

Accommodation chamber (131) position that screw rod (15) is positioned at connecting rod (13) is formed with stepped locking part (151), there is a bit of screw thread (1519) on the top of locking part (151), and this is the position of diameter minimum at locking part (151) partly, and being provided with the screw thread (1517) of one section predetermined length at locking part (151) bottom place, this is the position of diameter maximum at locking part (151) partly; And locking device (20) is arranged on outside the locking part (151) of connecting rod (13) and screw rod (15), locking device (20) be by first lead position ring (21), positioning seat (22), second leads position ring (23) and hydraulic oil (24) is constituted; First leads position ring (21) is nested with on the screw thread (1519) on locking part (151) top, and bolting element (30) (present embodiment is that the act nut the is an example) restriction of being put in screw thread (1519) by spiral shell is fixed on locking part (151) top end, and second lead position ring (23) and be nested with at locking part (151) and go up and be positioned at positioning seat (22) top end, and first, second external diameter of leading ring (21) (23), position is identical with accommodation chamber (131) internal diameter; In first, second corresponding appropriate position of leading ring (21) (23), position U type oil sealing (50) is arranged respectively, and lead position ring (a 23) ring side face pre-position second and be provided with O shape ring (60), U type oil sealing (50) all is to be used to avoid hydraulic oil (24) to ooze out with O shape ring (60); Positioning seat (22) is nested with in accommodation chamber (131) and uses lock member (40) (present embodiment is lifted bolt and is example) to be fixed on place, connecting rod (13) bottom, be positioned at accommodation chamber (131) position at positioning seat (22) and be formed with spiro union portion (221), spiro union portion (221) external diameter is also identical with accommodation chamber (131) internal diameter; Lead between position ring (21) (23) to be provided with the oil filler point (132) that runs through accommodation chamber (131) in connecting rod (13) pre-position and at first, second, inject first, second for hydraulic oil (24) and lead in the ring interval, (21) (23), position; So utilize hydraulic oil (24) to be filled in first, second and lead that ring (21) (23) in position are formed in interval to have equal pressure of side's property (effect of pressure is the gap that is to eliminate screw thread (1517) with the spiro union portion (221) of positioning seat (22) of screw rod (15) locking part, so, the pressure size of hydraulic oil (24) equals the gross weight of slide block, mold and screw rod), make the locking part (151) of screw rod (15) maintain static.This design can obtain following advantage in the operation of reality:

One, after the screw thread (1517) of locking part (151) screws togather with the spiro union portion (221) of positioning seat (22), promptly by the effect of the formed pressure of hydraulic oil (24), and the screw thread (1517) of screw rod (15) locking part (151) and the end play of the spiro union portion (221) of positioning seat (22) are eliminated, make connecting rod (13) and screw rod (15) form and be close to integrated, during with convenient stamped workpieces, slide block (14) rigidly connects when touching workpiece, it promptly is the beginning of stamped workpieces, and can be as formed because of gapped D in the past, must wait until that interval D changes to when following, be only the beginning of punching press, have vibrations in the period at this section and produce and cause.The utility model can promptly be the state that punching press begins, thereby can reduce the generation of vibrations in the moment of a contact workpiece.

They are two years old, based on solid lock effect by hydraulic oil (24), make connecting rod (13) and screw rod (15) form integrated, so, slide block (14) bottom is stable in whole impact process, and all constant from contact workpiece to finishing, that is to say that slide block (14) bottom dead centre can be firm shape, so, in precision stamping processing, can accurately control its punching stroke, and press quality is improved greatly.

Its three, be eliminated based on clearance D again and reason that vibrations are reduced, make the utility model can protect mould to avoid sustaining damage, and increase die life, and can keep the precision of press and mould again for a long time.

In addition, please consult shown in Figure 8 again, it is another preferred embodiment of the utility model, it is identical haply with the structure of the foregoing description, difference is to be, locking device of present embodiment (30) and one-body molded the making of connecting rod (13), and no longer need to establish in addition locking device (30), it is from top to bottom to form first room (133) and spiro union portion (134) at connecting rod (13) inside center place, also solid first locating ring (70) of spiral shell on the top of screw rod (15), then set firmly second locating ring (80) in first room (133) bottom surface, first, corresponding appropriate position of second locating ring (70) (80) respectively is provided with U type oil sealing (90), so, when hydraulic oil (24) is injected by oil filler point (132), make the threaded portion (1518) of screw rod (15) locking part (151) eliminate, so present embodiment has function same as the previously described embodiments with spiro union portion (134) end play of connecting rod (13).

In sum, the structure that the utility model embodiment is disclosed is the solid lock effect that utilizes the hydraulic oil of locking device, makes connecting rod and screw rod can gappedly not produce after screwing togather, produce with the vibrations that reduce in punching course, and improve die life and make the slide block bottom dead centre stable.

Claims

1, a kind of connecting rod of press and the locking device between the screw rod, wherein connecting rod is articulated on the bent axle that is subjected to the gear reduction transmission, extend upward in the connecting rod bottom and to be provided with accommodation chamber, accommodation chamber is installed with for the screw rod of bottom hub setting on the slide block top, when making connecting rod and then rotate beat simultaneously when the bent axle rotation, screw rod can be with the upper and lower slippage of slide block and impact working substance, it is characterized in that;

The accommodation chamber position that screw rod is positioned at connecting rod is provided with stepped locking part, there is a locking device to be arranged on outside the locking part of connecting rod and screw rod, locking device is first to lead position ring by what be installed in screw tip, be nested with in accommodation chamber and be installed in the positioning seat of connecting rod bottom, being positioned at second of positioning seat top leads the position ring and is filled in first, second hydraulic oil of leading an interannular constitutes, first, second to lead the external diameter of position ring identical with the accommodation chamber internal diameter, and being positioned at the position of accommodation chamber, positioning seat is formed with spiro union portion, the spiro union portion external diameter is also identical with the accommodation chamber internal diameter, be provided with oil filler point on connecting rod, hydraulic oil injects first by oil filler point, second leads in the ring interval, position.

2, according to the connecting rod of the described press of claim 1 and the locking device between the screw rod, it is characterized in that: locking device and connecting rod are made in one-body molded mode, it is from top to bottom to form first room and spiro union portion at connecting rod inside center place, first room, one side runs through and is provided with oil filler point, the design of the locking part coupler link of screw rod, also from top to bottom be provided with one section threaded portion, threaded portion and spiro union portion are spirally connected, and pass spiro union portion and be positioned at first room, the screw rod locking is in connecting rod, and hydraulic oil injects in first room from oil filler point.