CN206317418U - A kind of punch press of adjustable height of punch - Google Patents

Abstract

The utility model provide a kind of punch press of adjustable height of punch, belong to punch press technical field, the height of punch that it solves existing punch press is difficult to free regulation, it is impossible to well suitable for various height sizes mould technical problem.The utility model includes mounting bracket, power part, punch, casing and connection bucket, punch drive connection power part, including connecting rod and drift, the connecting rod includes the outer bar and interior bar of coaxial socket up and down, interior bar is threadedly coupled outer bar, and the size of the adjustable distance of interlocking between interior bar and outer bar of rotation interior bar, outer bar is connected on bent axle, one end connection drift of interior bar, casing is located in casing, connection drift and sliding block, and height of punch adjusting means is provided with the connection bucket.The utility model has high lubricating effect, the advantage that highly can arbitrarily adjust.

Description

A kind of punch press of adjustable height of punch

Technical field

The utility model belongs to field of mechanical technique, more particularly to a kind of punch press of adjustable height of punch.

Background technology

Punch press is a kind of punching type forcing press, is processed into using the special cast iron alloy of integration, with high rigidity, is resisted Pinking and high precision.When punch press is operated, first mould is placed in machine table and is fixed, fixed after finishing, start electricity Machine, motor belt motor dynamic crankshaft promotes sliding block to carry out punching press to mould.Its height size of different types of mould also tends to difference, in order to Punching press preferably is carried out to various moulds, it is necessary to the gap size between pre- regulating sliding piece and mould before stamping.Existing punch press Adjusting slider and mould size often by the way of adjusting slider height size, it is up or past by turning block Under the original position of pre- regulating sliding piece reach the purpose of distance between adjusting slider and mould.Existing punch press is highly adjusted in sliding block , it is necessary to judge the adjusting position of sliding block according to the naked eyes of staff during section, precision is relatively low, it is difficult to meet punch press high accuracy Processing request.On the other hand, sliding block in process can be by very big reaction force, it is necessary to set balance weight mechanism balanced The stress of sliding block, the existing typically no balance weight mechanism of punch press, and the punch press of balance weight mechanism is provided with, its counterweight of its balance weight mechanism Effect is also not ideal enough.

Utility model content

The purpose of this utility model is there is above mentioned problem for existing technology, it is proposed that a kind of adjustable height of punch Punch press, the punching machine structure is simple, can automatically adjust the height of drift, be easy to the mould of the various height sizes of punch press punching press.

The purpose of this utility model can be realized by following technical proposal：A kind of punch press of adjustable height of punch, bag Include：

Mounting bracket, including base and installation portion, provided with four pillars between the base and installation portion, between four pillars It is formed with punching stroke chamber, base and is provided with machine table, slide rail is provided with four pillars；

Power part, is arranged on installation portion, including motor, multi-stage speed-reducing gear and bent axle；

Punch, be connected power part, including connecting rod and drift, the connecting rod include the coaxial outer bar of socket up and down and Interior bar, interior bar threaded connection outer bar, the size of the adjustable distance of interlocking between interior bar and outer bar of rotation interior bar, outer bar is connected to song On axle, one end connection drift of interior bar；

Casing, in punching stroke chamber, including sliding block and encloses four blocks of side plates being located on four peripheries of sliding block, casing Slideway, slideway clamping corresponding with the slide rail are provided with four rib portions；

Bucket is connected, in casing, connects in drift and sliding block, the connection bucket and is provided with height of punch adjusting means.

Preferably, the bottom wall of the connection bucket extends to the periphery and is formed with shirt rim, the bottom wall of connection bucket is sticked in sliding block It is fixedly connected on upper surface and by shirt rim with sliding block.

Preferably, the sidepiece of the connection bucket is outstanding to be formed with a connecting pipe, the stage casing part of connecting pipe Intersect with connection bucket and be formed with the breach built in one, breach connects connecting pipe with being connected cavity volume built in bucket, the connection bucket Madial wall is in offering an annular groove on breach sustained height.

Preferably, the arrangement for adjusting height includes turbine and worm screw, the turbine socket is fixed on drift and held It is contained in the annular groove, the worm screw is plugged in the connecting pipe, the teeth portion of worm screw extend into connection by breach Engaged in bucket with the turbine, the two ends of worm screw are stretched out by two openings of connecting pipe respectively intersects with the side plate of both sides.

Preferably, the two ends that worm screw is intersected with side plate are respectively arranged with an adjustment portion and a display part.

Preferably, the adjustment portion includes being provided with first gear, snail in regulation motor and first rotating shaft, first rotating shaft Bar is provided with second gear, first gear and the second gear engagement, the diameter of first gear on one end of adjustment portion Less than the diameter of second gear.

Preferably, the display part includes being provided with graduation apparatus in display screen and the second rotating shaft, display screen, graduation apparatus Pointer is swung with the second axis of rotation, the 3rd gear is provided with the second rotating shaft, worm screw is on one end of display part The 4th gear is provided with, the 3rd gear and the 4th gear are engaged, and the diameter and the number of teeth of the 3rd gear and the 4th gear are homogeneous Together.

Preferably, the monosymmetric of the casing is provided with two sinkers, sinker is fixed between two pillars, It is movably provided with counterweight connecting rod on sinker, the side plate of counterweight connecting rod and casing is fixed.

Preferably, the outer bar includes locating rod and drive link, the upper end of drive link has the collar, and drive link passes through set Ring and bent axle are socketed, and drive link lower end is that through hole is axially offered in straight-bar, straight-bar, locating rod by through hole lower ending opening grafting In straight-bar, screwed hole is axially provided with locating rod, interior bar is plugged in the screwed hole.

Oilhole is offered preferably, being provided between the collar and bent axle on oil ring, oil ring, is set in the locating rod Oil groove is equipped with, oil groove is opened on the hole wall of screwed hole.

Based on any of the above-described technical scheme, the utility model embodiment can at least produce following technique effect：

1st, the utility model sets side plate formation casing in the surrounding of sliding block, and casing is arranged on into punching by four guide rails Press in stroke chamber so that in punching press, casing can carry out punching press action along guide rail in punching stroke chamber, by mould During reaction force, the stability of punching press can be kept.

2nd, the utility model is provided with multi-stage speed-reducing gear between motor and bent axle, reduces punch press wanting for motor Ask.

3rd, connecting rod of the present utility model is the outer bar structure of inside and outside alternating expression, and interior bar can be entered to travel out in outer bar, interior bar Front end be provided with drift, by rotate drift drive interior bar motion is rotated into or produced in outer bar, so as to adjust drift Height size in fact, and due to drift be arranged on connection bucket in, drift is fixedly connected by connecting bucket with sliding block, this The height size of sample drift changes, and has also driven the elemental height of sliding block to change naturally.The utility model is in connection bucket Interior to be provided with the arrangement for adjusting height being made up of turbine and worm screw, turbine is installed on drift, and worm screw engages with turbine, this Sample can drive drift to carry out from the height for transferring adjusting slider, the setting one side company of serving of connection bucket by rotary worm Connect the effect of sliding block and drift, good running environment also on the other hand provided for turbine and worm screw, prevent dust etc. other Factor is impacted to it.In addition, the utility model is provided with casing in the outside of drift, and sliding block is fixed on to the bottom of casing Portion, and balance weight mechanism is provided with the monosymmetric of casing, balance weight mechanism can be very good to ensure sliding block in punching course Middle stress equalization, so that the high precision of punching press, effect is good.

Brief description of the drawings

Fig. 1 is overall structure figure of the present utility model；

Fig. 2 is cut-away view of the present utility model；

Fig. 3 is punch-out structure chart of the present utility model；

Fig. 4 is another structure chart of punch-out of the present utility model；

Fig. 5 is Fig. 4 part detonation configuration figure；

Fig. 6 is the structure chart of connector in the utility model；

Fig. 7 is arrangement for adjusting height structure chart in the utility model；

Fig. 8 is the sectional view of drift in the utility model；

In figure, 100, mounting bracket；110th, base；111st, machine table；120th, installation portion；121st, motor；122nd, multi-stage speed-reducing Gear；123rd, bent axle；123a, crank throw；200th, casing；210th, adjustment portion；211st, first rotating shaft；212nd, first gear；213rd, Two gears；220th, slideway；230；Display part；231st, the second rotating shaft；232nd, the 3rd gear；233rd, the 4th gear；240th, sliding block； 250th, side plate；300th, punching stroke chamber；310th, slide rail；320th, sinker；330th, counterweight connecting rod；340th, pillar；400th, connecting rod； 410th, outer bar；411st, upper fan ring；411a, platform；411b, oil filler point；412nd, straight-bar portion；412a, lower fan ring；413rd, oil ring； 413a, oil storage tank；413b, oil seepage hole；414th, connector；414a, screwed hole；414b, oil groove；414c, flange；420th, interior bar； 421st, ball head；600th, drift；610th, Spherical chamber；620th, turbine；630th, worm screw；640th, annular groove；650th, breach；700、 Connect bucket；710th, connecting pipe；711st, oil transportation hole；720th, shirt rim；730th, sealing ring.

Embodiment

The following is specific embodiment of the utility model and with reference to accompanying drawing, further is made to the technical solution of the utility model Description, but the utility model is not limited to these embodiments.

As depicted in figs. 1 and 2, the utility model provides a kind of punch press of adjustable height of punch, including：Mounting bracket 100, including base 110 and installation portion 120, provided with four pillars 340, four pillars between the base 110 and installation portion 120 It is formed between 340 on punching stroke chamber 300, base 110 and is provided with machine table 111, slide rail is provided with four pillars 340 310；Power part, is arranged on installation portion 120, including motor 121, multi-stage speed-reducing gear 122 and bent axle 123；Punch, transmission Power part, including connecting rod 400 and drift 600 are connected, the connecting rod 400 includes the outer bar 410 and interior bar of coaxial socket up and down 420, the threaded connection outer bar 410 of interior bar 420, rotation interior bar 420 can adjust the big of distance of interlocking between interior bar 420 and outer bar 410 Small, outer bar 410 is connected on bent axle 123, one end connection drift 600 of interior bar 420；Casing 200, positioned at punching stroke chamber 300 It is interior, including sliding block 240 and enclose in four blocks of side plates 250 being located on 240 4 peripheries of sliding block, four rib portions of casing 200 set There are slideway 220, the slideway 220 and the corresponding clamping of the slide rail 310；Bucket 700 is connected, in casing 200, drift is connected 600 are provided with the arrangement for adjusting height of drift 600 with sliding block 240, described connect in bucket 700.The utility model operationally, motor 121 are driven by multi-stage speed-reducing gear 122 to bent axle 123, and the drivening rod 400 of bent axle 123 promotes casing 200 to enter mould Row punching press, the utility model is provided with connection bucket 700 to connect drift 600 and sliding block 240 in casing 200, in connection bucket 700 Arrangement for adjusting height is inside provided with, by the elemental height of arrangement for adjusting height adjustable case body 200, various height are conveniently adapted to The mould of size carries out punching press.

Specifically, as shown in Figure 3 and Figure 4, connection bucket 700 is cylindrical, it is easy to accommodating drift 600 and connection sliding block 240, Drift 600 is connected in connection bucket 700, and connection 700 pairs of drifts 600 of bucket have carried out axial limiting and radially spacing, it only may be used Carry out circumferential rotation.The lower surface of connection bucket 700 is close to the middle position of the upper surface of sliding block 240, it is ensured that sliding block 240 is in punching Stress equalization during pressure.The lower end for connecting bucket 700 is formed with shirt rim 720 towards extending around, connection bucket 700 by shirt rim 720 with Sliding block 240 is fixed, and the setting of shirt rim 720 adds the contact surface between connection bucket 700 and sliding block 240, is easy to connect bucket 700 are fixed with sliding block 240, while adding the structural stability between connection bucket 700 and sliding block 240.

Further, the utility model is provided with arrangement for adjusting height between connection bucket 700 and drift 600, and height is adjusted Regulating device includes turbine 620 and worm screw 630, and turbine 620 is fixed by socket on drift 600, and turbine 620 and worm screw 630 engage, whirlpool Wheel 620, which is rotated, can drive drift 600 to carry out rotation.Because connecting rod 400 uses interior bar 420 and the spiral shell of outer bar 410 in the utility model Line is socketed, and interior bar 420 is fixedly connected with drift 600, and drift 600 carries out rotation, drift under the drive of the worm screw 630 of turbine 620 600 drive interior bar 420 to be rotated action with respect to outer bar 410 from the change of team, accordingly even when interior bar 420 is rotated into outer bar 410 is interior Or the action produced, increase or reduce the staggeredly distance between interior bar 420 and outer bar 410, have adjusted the height of drift 600 Degree.Because drift 600 is attached by connecting bucket 700 with sliding block 240, the height change of drift 600 is the height of sliding block 240 Degree change that is to say the height change of casing 200, so as to reach the technical purpose of the regulation elemental height of casing 200.

Further, as shown in Figure 7 and Figure 8, the sidepiece of connection bucket 700 is in convex on the sustained height face of turbine 620 Go out to be formed with a connecting pipe 710, for installing worm screw 630, be easy to turbine 620 of the worm screw 630 with being connected in bucket 700 to carry out Engagement.The inner passage of connecting pipe 710 is crossed to form on a breach 650, worm screw 630 with being connected the inner volume of bucket 700 Driving cog connection bucket 700 inside extend into by breach 650 be engaged with turbine 620, on the madial wall of connecting pipe 710 Annular groove 640 is provided with, annular groove 640 is located on sustained height face with above-mentioned breach 650, annular groove 640 is used to hold Receive turbine 620, be easy to turbine 620 to be rotated, also make it that the whole connection internal structure of bucket 700 is compacter.Connecting pipe 710 On be additionally provided with oil transportation hole 711, the engagement place of 620 worm screw of turbine 630 is led in oil transportation hole 711, can be to connecting tube by oil transportation hole 711 Injection lubricating oil is lubricated to the worm screw 630 of turbine 620 in road 710.In addition, being set at two openings of connecting pipe 710 There is sealing ring 730 to be sealed, so that turbine 620 and the running part of worm screw 630 are under a closed state, have Dust-proof function, also allows for lubricating oil and is lubricated for the worm screw 630 of turbine 620.

Further, connecting pipe 710 is stretched out at the two ends of worm screw 630 and the side plate 250 of the both sides of casing 200 is crossed to form one Individual adjustment portion 210 and a display part 230, adjustment portion 210 are used to worm screw 630 is driven to adjust the height of casing 200 Size, display part 230 is used for the present level for showing casing 200.Specifically, adjustment portion 210 includes regulation motor, motor is adjusted On the lateral wall for being arranged on side plate 250, first rotating shaft 211 is connected with regulation motor, first rotating shaft 211 is stretched through side plate 250 Enter into casing 200 and worm screw 630 is driven, first gear 212 is provided with first rotating shaft 211, in worm screw 630 close to tune Second gear 213 is provided with the end of this one end of section portion 210, first gear 212 and the engagement of second gear 213 form gear biography Dynamic, it should be pointed out that in the utility model, the diameter of first gear 212 is less than the diameter of second gear 213, for increasing The moment of torsion for driving worm screw 630 to rotate.Display part 230 includes a display screen, and display screen is arranged on the outside of opposite side side plate 250 On wall, graduation apparatus and the second rotating shaft 231 are set, graduation apparatus can be swung with the rotation of the second rotating shaft 231 in display screen, the Two rotating shafts 231 are stretched into the inside of casing 200 and are connected with worm screw 630, and the 3rd gear 232 is provided with the second rotating shaft 231, Worm screw 630, which is located on the end at the end, is provided with the 4th gear 233, the 3rd gear 232 and the engaged transmission of the 4th gear 233, needs It is noted that the 3rd gear 232 is identical with the diameter of the 4th gear 233 in the utility model, in order to the swing of graduation apparatus With the ratiometric conversion of the degree of rotation of worm screw 630.

When carrying out the height regulation of casing 200, observation graduation apparatus draws the present level of casing 200 and required regulation Highly, then control to adjust motor driving worm screw 630 rotated, worm screw 630 rotate after drive turbine 620 rotated, turbine 620, which rotate drive drift 600, is rotated, and drift 600, which is rotated, drives interior bar 420 to be rotated, and interior bar 420, which is rotated, produces interior bar 420 height change, the height change of interior bar 420 is the height change of casing 200, and total sets reasonable, structure letter Single, easy to adjust, the degree of accuracy is high.

Further, the both sides of casing 200 are provided with two sinkers 320, and two sinkers 320 are symmetrical arranged, counterweight Seat 320 is fixed between the pillar 340 of casing 200 both sides two, and counterweight connecting rod 330 is connected with sinker 320, with reconnecting Bar 330 is L-shaped to be set, and is easy to the other end of counterweight connecting rod 330 to be fixed on casing 200, casing 200 is being moved up and down When, counterweight connecting rod 330 makees same action with casing 200.The setting of sinker 320 and counterweight connecting rod 330 causes casing 200 Stress point the both sides of casing 200 are scattered to by the middle part of casing 200 so that the stress in punching course of casing 200 is more balanced, Stationarity is good.

Further, motor 121 is driven by multi-stage speed-reducing gear 122 to bent axle 123, so that in motor 121 Increase the driving torque to bent axle 123 in the case that rotating speed is certain, the two ends of bent axle 123 by bearing be fixed on both sides every On plate, securing plate cruciferous is set further to be fixed on dividing plate, it is ensured that the stabilization that bent axle 123 is run.Bent axle 123 With a crank throw 123a, connecting rod 400, which is socketed in, promotes the drift 600 of lower end to carry out punching press on crank throw 123a.Connecting rod 400 is by interior The outer interior bar 420 being coaxially socketed and outer bar 410 are constituted, and the lower end of interior bar 420, which has in ball head 421, drift 600, is provided with ball Chamber 610 is described, ball head 421 is connected in Spherical chamber 610, carried out between ball head 421 and Spherical chamber 610 using bearing pin It is fixedly connected, connected mode is simple and practical, whole stable connection is good, it is difficult for drop-off between connecting rod 400 and drift 600.

As shown in Figure 5 and Figure 6, outer bar 410 includes straight-bar portion 412, and the one end in straight-bar portion 412 is provided with socket part, straight-bar The other end in portion 412 is plugged with connector 414.Outer bar 410 is socketed on crank throw 123a by socket part, and socket part is by upper fan ring 411 and lower fan ring 412a is constituted, and wherein lower fan ring 412a is integrally formed on the termination of outer bar 410, upper fan ring 411 and lower fan ring 412a is closed up and wrapped crank throw 123a using connected mode fixations such as screws to be connected with crank throw 123a.Connector 414 is cylindrical, is easy to be plugged at the opening of outer bar 410, flange 414c is provided with one end of connector 414, for inciting somebody to action Connector 414 is fixed in outer bar 410, and flange 414c upper surface and the lower surface of outer bar 410 are sticked, and is set on flange 414c There is fastener that connector 414 is connected with outer bar 410.Connector 414 is internally provided with screwed hole 414a, interior bar 420 It is plugged in screwed hole 414a, by setting connector 414 so that be more prone to be torn open between interior bar 420 and outer bar 410 Dress, is convenient for repairing and safeguards.

It is well known that the mechanism of bent axle 123 is in high intensity running, friction is easily produced, will necessarily be caused after friction Abrasion, and for the higher transmission mechanism of bent axle 123 of this required precision, once wearing and tearing, precise decreasing will necessarily be caused. The utility model is provided with special lubrication system in the mechanism of bent axle 123 and the mechanism of bent axle 123 is lubricated.Specifically, such as Shown in Fig. 4 and Fig. 5, oil ring 413, the length scale of oil ring 413 and socket part are provided between the socket part of outer bar 410 and crank throw Size match, be evenly equipped with several oil seepage holes 413b and oil storage tank 413a on oil ring 413, oil seepage hole 413b is through hole, storage Oil groove 413a is interlaced, upper fan ring 411 upper end is provided with a raised platform 411a, if being provided with platform 411a Dry individual oil filler point 411b, oil filler point 411b lead at oil ring 413.When being lubricated to the part of bent axle 123, to oil filler point 411b Interior injection lubricating oil, simple and convenient, lubricating oil is stored in oil filler point 411b by oil filler point 411b injections rear portion, separately A part is stored in oil seepage hole 413b and oil storage tank 413a, and the lubricating oil in oil seepage hole 413b can be simultaneously to crank throw 123a and set Socket part madial wall is lubricated, and oil filler point 411b and the lubricating oil of oil storage tank 413a memory storages then can be constantly to oil seepage holes 413b lubricating oil is supplemented, and the mechanism of bent axle 123 lubricates in place in operation process, and an oiling can maintain long-time bent axle The lubrication of 123 parts.In the utility model in order to adapt to various moulds the need for, the starting altitude size of drift 600 often will Be adjusted, the adjustment of the height of drift 600 be according to the staggeredly distance regulation between the interior bar 420 of connecting rod 400 and outer bar 410 come , i.e., the starting altitude of drift 600 is adjusted by roll-in and roll-out interior bar 420, interior bar 420 is threaded in outer bar 410 On connector 414, the utility model has opened up oil groove 414b on the screwed hole 414a madial walls of connector 414 and has carried out oil storage, Ensure smooth rotation between interior bar 420 and outer bar 410, be difficult stuck, be easy to staff to carry out the starting altitude of drift 600 Adjustment.The utility model is lubricated by above two lubricating structure to the mechanism of bent axle 123, it is ensured that the mechanism of bent axle 123 Smooth in operation process, the frictional force received is small, and the abrasion produced in punching course reduces, and improves the service life of punch press, Also the punching precision of punch press is improved from another point of view.

Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims (10)

1. a kind of punch press of adjustable height of punch, it is characterised in that including：

Mounting bracket, including base and installation portion, provided with four pillars between the base and installation portion, are formed between four pillars Have and machine table is provided with punching stroke chamber, base, slide rail is provided with four pillars；

Power part, is arranged on installation portion, including motor, multi-stage speed-reducing gear and bent axle；

Punch, be connected power part, including connecting rod and drift, and the connecting rod includes the coaxial outer bar of socket up and down and interior Bar, interior bar threaded connection outer bar, the size of the adjustable distance of interlocking between interior bar and outer bar of rotation interior bar, outer bar is connected to bent axle On, one end connection drift of interior bar；

Casing, in punching stroke chamber, including sliding block and encloses four blocks of side plates being located on four peripheries of sliding block, four of casing Slideway, slideway clamping corresponding with the slide rail are provided with rib portion；

Bucket is connected, in casing, connects in drift and sliding block, the connection bucket and is provided with height of punch adjusting means.

2. the punch press of adjustable height of punch according to claim 1, it is characterised in that the bottom wall of the connection bucket is to week Side extension is formed with shirt rim, and the bottom wall of connection bucket is sticked on upper end of slide block face and is fixedly connected by shirt rim with sliding block.

3. the punch press of adjustable height of punch according to claim 1, it is characterised in that the sidepiece of the connection bucket is outside Prominent to be formed with a connecting pipe, the stage casing part of connecting pipe is intersected with connection bucket and is formed with the breach built in one, breach Connection connecting pipe is recessed in offering an annular on breach sustained height with being connected cavity volume built in bucket, the connection bucket madial wall Groove.

4. the punch press of adjustable height of punch according to claim 3, it is characterised in that the arrangement for adjusting height includes Turbine and worm screw, the turbine socket are fixed on drift and are contained in the annular groove, and the worm screw is plugged on described In connecting pipe, the teeth portion of worm screw is extend into connection bucket by breach to be engaged with the turbine, and the two ends of worm screw are respectively by even Two openings in adapter road are stretched out to intersect with the side plate of both sides.

5. the punch press of adjustable height of punch according to claim 4, it is characterised in that the two ends that worm screw is intersected with side plate It is respectively arranged with an adjustment portion and a display part.

6. the punch press of adjustable height of punch according to claim 5, it is characterised in that the adjustment portion includes regulation horse Reach and first rotating shaft, first gear is provided with first rotating shaft, worm screw is provided with second gear, institute on one end of adjustment portion First gear and second gear engagement are stated, the diameter of first gear is less than the diameter of second gear.

7. the punch press of adjustable height of punch according to claim 5, it is characterised in that the display part includes display screen With the second rotating shaft, graduation apparatus is provided with display screen, the pointer of graduation apparatus is swung with the second axis of rotation, the second rotating shaft On be provided with the 3rd gear, worm screw is provided with the 4th gear, the 3rd gear and the engagement of the 4th gear on one end of display part, The diameter and number of teeth all same of 3rd gear and the 4th gear.

8. the punch press of adjustable height of punch according to claim 1, it is characterised in that the casing it is monosymmetric Two sinkers are provided with, sinker is fixed between two pillars, and counterweight connecting rod, counterweight connecting rod are movably provided with sinker Fixed with the side plate of casing.

9. the punch press of adjustable height of punch according to claim 1, it is characterised in that the outer bar include locating rod and Drive link, the upper end of drive link has the collar, and drive link is socketed by the collar and bent axle, and drive link lower end is in straight-bar, straight-bar Through hole axially is offered, locating rod is plugged in straight-bar by the lower ending opening of through hole, and screwed hole is axially provided with locating rod, interior Bar is plugged in the screwed hole.

10. the punch press of adjustable height of punch according to claim 9, it is characterised in that between the collar and bent axle It is provided with oil ring, oil ring and offers oilhole, oil groove is provided with the locating rod, oil groove is opened on the hole wall of screwed hole.