CN112059088A

CN112059088A - Multi-station die holder for punch press

Info

Publication number: CN112059088A
Application number: CN202010904688.1A
Authority: CN
Inventors: 周文祥; 唐燕燕; 唐寅
Original assignee: Dongguan Hailuo Industrial Co ltd
Current assignee: Dongguan Hailuo Industrial Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-12-11

Abstract

The invention belongs to the field of forging dies, and particularly relates to a multi-station die holder for a punch, which comprises a lower die holder, an upper die holder, a lower die tray and a rotating mechanism, wherein the lower die holder is fixedly connected with the lower die holder; a tray groove is formed in the lower die base, the lower die tray is placed in the tray groove, a plurality of groups of station grooves are formed in the lower die tray, and a lower die is fixedly installed in the station grooves; the upper end of the tray groove is respectively and fixedly provided with a limiting ring and a plurality of groups of limiting blocks, the bottom of the station groove is provided with a material ejecting hole, and one end of the material ejecting hole is communicated with the processing groove; an output shaft of the hydraulic ejector rod can movably penetrate through the material ejecting hole. The invention avoids the danger hidden trouble of clamping by a manual holding clamp, and the processing efficiency is greatly improved by arranging a plurality of groups of stations and the design that the plurality of stations rotate circularly; the step of taking out the workpiece is not manually assisted, so that the method is very simple and convenient, and the working efficiency is further improved.

Description

Multi-station die holder for punch press

Technical Field

The invention belongs to the field of forging dies, and particularly relates to a multi-station die holder for a punch press.

Background

Flanges are commonly used as connections between pipes, valves, pumps and other plumbing to complete the plumbing work somewhere, and are typically welded or screwed to the pipes and then bolted together. The existing flange production process mainly comprises two types of forging and casting, wherein the forged flange generally has lower carbon content than the cast flange and is not easy to rust; the forged flange has good streamline, compact structure and better mechanical property than the cast flange; the forged flange can bear higher shearing force and tensile force than a cast flange, the internal structure of a forge piece is uniform, and harmful defects such as air holes and impurities exist. There is now an increasing demand for forged flanges.

When the existing flange is forged, a heated blank is generally placed in a processing area of a forging hammer or a punch press, a manual holding clamp clamps the blank, and then upsetting and final forging are performed. When the existing common die is used for flange forging, the steps of filling the blank and taking out the forged piece are complicated, manual auxiliary operation is still needed, and the working efficiency is low, so that the multi-station die holder for the punch press is needed.

Disclosure of Invention

Aiming at the problems, the invention provides a multi-station die holder for a punch press, which comprises a lower die holder, an upper die holder, a lower die tray and a rotating mechanism, wherein the lower die holder is fixedly connected with the lower die holder;

a tray groove is formed in the lower die base, the lower die tray is placed in the tray groove, a plurality of groups of station grooves are formed in the lower die tray, and a lower die is fixedly installed in the station grooves;

the bottom of the tray groove is provided with a first mounting groove, the rotating mechanism is fixedly mounted in the first mounting groove, the output end of the rotating mechanism is arranged below the lower mold tray, the central axis of the output shaft of the rotating mechanism is superposed with the central axis of the lower mold tray, and the upper mold seat is positioned above the lower mold tray;

one or more groups of upper dies are fixedly arranged at the lower end of the upper die holder;

the upper end of the tray groove is fixedly provided with a limiting ring and a plurality of groups of limiting blocks respectively, the bottom of the tray groove is also provided with a second mounting groove, the second mounting groove is positioned under the limiting ring, a hydraulic ejector rod is fixedly mounted in the second mounting groove, and the central axis of an output shaft of the hydraulic ejector rod is superposed with the central axis of the limiting ring;

the lower die is provided with a processing groove, the processing groove penetrates through the lower die, the inner diameter of the limiting ring is larger than the maximum inner diameter of the processing groove, and the inner diameter of the limiting ring is smaller than the minimum outer diameter of the processing groove;

a material ejecting hole is formed in the bottom of the station tank, and one end of the material ejecting hole is communicated with the machining tank; an output shaft of the hydraulic ejector rod can movably penetrate through the material ejecting hole.

Preferably, two groups of upper dies are arranged; the station grooves are provided with three groups, the three groups of station grooves are arranged in a regular triangle shape, and the center distance of the three groups of station grooves is equal to the center distance of the two groups of upper dies.

Preferably, the limiting ring is positioned on one side of the lower die base away from the upper die base, and the connecting line of the centers of the limiting ring and the center of the tray groove is perpendicular to the connecting line of the centers of the two groups of upper dies.

Preferably, an internal thread seat is arranged in the station groove, the outer wall of the internal thread seat is connected with the inner wall of the station groove through a damping spring, the damping spring is arranged in an annular array mode, the lower die is installed in the internal thread seat in a threaded mode, and one end of the material ejection hole penetrates through the internal thread seat and is communicated with the machining groove.

Preferably, lower mould tray and tray groove all set up to cylindrically, lower mould tray and tray groove clearance fit, the lateral wall of lower mould tray rotates installs the ball, ball circular array sets up on the lateral wall of lower mould tray.

Preferably, the rotating mechanism comprises a hydraulic cylinder and a motor; the one end fixedly connected with motor case of pneumatic cylinder output shaft, the motor joint is fixed in the motor incasement, the one end of motor output shaft runs through the motor case and is located the motor case top, the first butt joint of one end fixedly connected with of motor output shaft, be provided with the cross lug on the first butt joint.

Preferably, a second pair of joints is fixedly installed at the center of the bottom of the lower die tray, a cross-shaped groove is formed in the second pair of joints, and the cross-shaped groove and the cross-shaped bump are arranged correspondingly.

Preferably, the upper end fixed mounting of motor case has the slewing bearing, slewing bearing's center is provided with the through hole, through hole and the inside intercommunication of motor case, first butt joint is located the through hole.

According to the multi-station die holder, the blank is subjected to upsetting and finish forging by using the die matched with the punch, so that the danger potential of clamping by a manual holding fixture is avoided, and the machining efficiency is greatly improved by arranging a plurality of groups of stations and by the design that the stations are circularly rotated; through being provided with hydraulic ejector pin and liftout hole, the forging can be taken out through the liftout hole to the hydraulic ejector pin output for the forging takes out the step and need not artifical supplementary, and very simple and convenient has further improved work efficiency.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 shows an overall cross-sectional view according to an embodiment of the invention;

FIG. 2 shows a lower mold axial view according to an embodiment of the invention;

FIG. 3 shows a cross-sectional view of a lower die holder according to an embodiment of the invention;

FIG. 4 shows a side view of the lower die holder in accordance with an embodiment of the invention;

FIG. 5 shows a cross-sectional view of a rotating mechanism according to an embodiment of the present invention;

FIG. 6 shows a top view of a lower die tray according to an embodiment of the present invention;

FIG. 7 shows a top view of a station slot according to an embodiment of the invention;

FIG. 8 illustrates a bottom view of a lower die tray according to an embodiment of the present invention;

FIG. 9 shows a side view of a lower die tray according to an embodiment of the present invention.

In the figure: 1. a lower die holder; 101. a tray slot; 102. a first mounting groove; 103. a second mounting groove; 2. an upper die holder; 201. an upper die; 3. a lower die tray; 301. a station groove; 302. an internal thread seat; 303. a damping spring; 304. a material ejection hole; 305. a ball bearing; 4. a rotating mechanism; 5. a lower die; 501. processing a tank; 6. a limiting ring; 7. a limiting block; 8. a hydraulic ejector rod; 9. a hydraulic cylinder; 10. a motor; 11. a motor case; 12. a turntable bearing; 13. a first pair of joints; 14. a second pair of connectors.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a multi-station die holder for a punch press, which comprises a lower die holder 1, an upper die holder 2, a lower die tray 3 and a rotating mechanism 4.

For example, as shown in fig. 1, a tray groove 101 is formed in the lower die holder 1, the lower die tray 3 is placed in the tray groove 101, and a plurality of groups of lower dies 5 are fixedly mounted on the lower die tray 3;

first mounting groove 102 has been seted up to tray groove 101 bottom, 4 fixed mounting of slewing mechanism in first mounting

groove

102, 4 outputs of slewing mechanism are vertical upwards, and 4 outputs of slewing mechanism coincide with lower mould tray 3's axis, upper die base 2 is located lower mould tray 3 top.

The lower end of the upper die holder 2 is fixedly provided with two groups of upper dies 201.

As shown in fig. 2, the outer wall of the lower mold 5 is threaded, and a processing groove 501 is formed in the lower mold 5, and the processing groove 501 penetrates through the lower mold 5. In forging the blank, the blank is placed in the processing tank 501.

By mounting the lower die tray 3 in the tray groove 101, the tray groove 101 serves to position the lower die tray 3, thereby preventing the lower die tray 3 from deviating out of the machining area of the punch press during machining.

Preferably, can set up lower mould tray 3 into circular structure, and lower mould tray 3 and tray groove 101 clearance fit, both guaranteed that lower mould tray 3 can be at tray groove 101 internal rotation, can make the stress that lower mould tray 3 produced when the punch press punching press again, can furthest conduct to the inner wall in tray groove 101 on the horizontal direction, reduce 3 displacement dislocation of lower mould tray, avoided machining precision to hang down excessively.

For example, as shown in fig. 3 and 4, a limiting ring 6 and two sets of limiting blocks 7 are respectively and fixedly mounted at the upper end of a tray groove 101, a second mounting groove 103 is further formed in the bottom of the tray groove 101, the second mounting groove 103 is located right below the limiting ring 6, a hydraulic ejector rod 8 is fixedly mounted in the second mounting groove 103, an output shaft of the hydraulic ejector rod 8 is vertically upward, and a central axis of an output shaft of the hydraulic ejector rod 8 coincides with a central axis of the limiting ring 6;

the inner diameter of the limiting ring 6 is larger than the maximum inner diameter of the processing groove 501, and the inner diameter of the limiting ring 6 is smaller than the minimum outer diameter of the processing groove 501;

the limiting ring 6 is positioned above the lower die holder 1, in the horizontal direction, the limiting ring 6 is positioned on one side far away from the upper die holder 2, and the connecting line of the centers of the limiting ring 6 and the tray groove 101 is vertical to the connecting line of the centers of the two groups of upper dies 201.

The limiting blocks 7 are used for preventing the lower die tray 3 from being ejected out by the hydraulic ejector rod 8, in other embodiments, the two groups of limiting blocks can be movably connected with the lower die base 1, and the positions of the two groups of limiting blocks 7 can be adjusted; the hydraulic ejector rod 8 is used for ejecting a processed workpiece out of the lower die 5, the limiting ring 6 is used for being matched with the hydraulic ejector rod 8 to eject the workpiece, and when the hydraulic ejector rod 8 ejects the workpiece, the limiting ring 6 can clamp the lower die 5 to prevent the lower die 5 from being ejected out of the lower die tray 3.

Illustratively, as shown in fig. 5, the rotating mechanism 4 includes a hydraulic cylinder 9 and a motor 10; the one end fixedly connected with motor case 11 of pneumatic cylinder 9 output shaft, motor 10 joint is fixed in motor case 11 in, the upper end fixed mounting of motor case 11 has turntable bearing 12, turntable bearing 12's center is provided with the through hole, through hole and the inside intercommunication of motor case 11, the first butt joint 13 of one end fixedly connected with of motor 10 output shaft, first butt joint 13 is located the through hole, be provided with the cross lug on the first butt joint.

Extension through pneumatic cylinder 9 drives swivel plate bearing 12 with lower mould tray 3 jack-up, and first butt joint 13 docks with lower mould tray 3 simultaneously, makes motor 10 drive lower mould tray 3 and rotates, through above structure, both can realize lower mould tray 3's rotation, can make slewing mechanism 4 can not receive the impact force of punch press again in processing.

Illustratively, as shown in fig. 6 and 7, three sets, but not limited to three sets, of station grooves 301 are formed in the lower die tray 3, an internal thread seat 302 is arranged in the station groove 301, the outer wall of the internal thread seat 302 is connected with the inner wall of the station groove 301 through a damping spring 303, and the lower die 5 is installed in the internal thread seat 302 in a threaded manner;

a material ejecting hole 304 is formed in the bottom of the station tank 301, and one end of the material ejecting hole 304 penetrates through the internal thread seat 302 and is communicated with the processing tank 501;

the output end of the hydraulic ejector rod 8 extends to penetrate through the material ejecting hole 304, upward force can be applied to a workpiece in the processing tank 501, the workpiece can be ejected, the operation is simple, and the ejection step is rapid and efficient; through the cooperation of the limiting ring 6, in the process of ejecting a workpiece, the limiting ring 6 can clamp the lower die 5, so that the lower die 5 is prevented from being ejected.

The damping springs 303 are arranged in an annular array, the three groups of station grooves 301 are arranged in a regular triangle shape, and the center distance of the three groups of station grooves 301 is equal to the center distance of the two groups of upper dies 201;

in the punching process of punch press, because the stock appearance is irregular, the impact force that lower mould 5 received mostly has the horizontal direction component, can make lower mould 5 take place the translation or make 5 inner walls of lower mould wearing and tearing with higher speed, the horizontal direction impact force that lower mould 5 received can be alleviated through damping spring 303, protection lower mould 5 reduces its wearing and tearing, damping spring 303 can make lower mould 5 take place the displacement back simultaneously, resume to the normal position, make the device can steady operation.

For example, as shown in fig. 8, a second pair of joints 14 is fixedly installed at the center of the bottom of the lower mold tray 3, a cross-shaped groove is formed in the second pair of joints 14, and the cross-shaped groove is arranged corresponding to the cross-shaped protrusion;

through the cooperation of cross lug and cross recess, when first butt joint 13 and second butt joint 14 butt joint, can make the output shaft of motor 10 drive lower mould tray 3 and rotate, when pneumatic cylinder 9 withdraws, first butt joint 13 and second butt joint 14 can the natural separation, simple structure, and the transmission is firm.

Illustratively, as shown in fig. 9, the side wall of the lower die tray 3 is rotatably mounted with balls 305, and the balls 305 are arranged in an annular array on the side wall of the lower die tray 3.

Through setting up lower mould tray 3 to circular, and through ball 305 and tray groove 101 clearance fit for lower mould tray 3 can more conveniently rotate when the atress is even.

When the multi-station die holder for the punch press is used, blanks are firstly placed into the two groups of processing grooves 501, then the hydraulic cylinder 9 is controlled to lift the motor box 11 upwards, the first pair of joints 13 and the second pair of joints 14 are in butt joint, the lower die tray 3 is supported through the turntable bearing 12, then the motor 10 is started to drive the lower die tray to rotate, the two groups of processing grooves 501 in which the blanks are placed are rotated to be right below the two groups of upper dies 201, the two groups of processing grooves 501 are respectively aligned with the two groups of upper dies 201, and then the punch press is started to process the blanks; through placing stock and lower mould tray pivoted mode in the processing groove 501, need not artifical centre gripping, make the workman difficult by the machine accidental injury, safer, the machining dimension is more accurate moreover.

After the processing is finished, controlling the hydraulic cylinder 9 to lift the motor box 11 upwards, then starting the motor 10 to drive the lower die tray 3 to rotate, so that one group of processed slots 501 rotate to the position right below the limiting ring 6, controlling the output end of the hydraulic ejector rod 8 to extend to penetrate through the ejector hole 304, and ejecting a workpiece in the processed slots 501, wherein in the process of ejecting the workpiece, the limiting ring 6 can clamp the lower die 5 to prevent the lower die 5 from being ejected; the forge piece taking-out step does not need manual assistance through the hydraulic ejector rod 8 and the limiting ring 6, the ejection step is simple and convenient, and the working efficiency is further improved.

Through being provided with three bed dies 5 of group, form three processing station to rotation through lower mould tray 3 makes to form the station between three bed dies 5 of group and rotates, and when wherein two sets of bed dies 5 lie in the punching press of mould 201 below, another bed die 5 of group lies in the finished piece that the processing was accomplished in 6 below liftouts of spacing ring, through this kind of design, has further improved work efficiency. It should be noted that the lower molds 5 include, but are not limited to, three sets, and the upper molds include, but are not limited to, two sets.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a multistation die holder for punch press which characterized in that: comprises a lower die holder (1), an upper die holder (2), a lower die tray (3) and a rotating mechanism (4);

a tray groove (101) is formed in the lower die holder (1), the lower die tray (3) is placed in the tray groove (101), a plurality of groups of station grooves (301) are formed in the lower die tray (3), and a lower die (5) is fixedly installed in the station grooves (301);

a first mounting groove (102) is formed in the bottom of the tray groove (101), the rotating mechanism (4) is fixedly mounted in the first mounting groove (102), the output end of the rotating mechanism (4) is arranged below the lower mold tray (3), the central axis of the output shaft of the rotating mechanism (4) is overlapped with the central axis of the lower mold tray (3), and the upper mold base (2) is located above the lower mold tray (3);

one or more groups of upper dies (201) are fixedly arranged at the lower end of the upper die holder (2);

the upper end of the tray groove (101) is respectively and fixedly provided with a limiting ring (6) and a plurality of groups of limiting blocks (7), the bottom of the tray groove (101) is further provided with a second mounting groove (103), the second mounting groove (103) is located right below the limiting ring (6), a hydraulic ejector rod (8) is fixedly mounted in the second mounting groove (103), and the central axis of an output shaft of the hydraulic ejector rod (8) is superposed with the central axis of the limiting ring (6);

a processing groove (501) is formed in the lower die (5), the processing groove (501) penetrates through the lower die (5), the inner diameter of the limiting ring (6) is larger than the maximum inner diameter of the processing groove (501), and the inner diameter of the limiting ring (6) is smaller than the minimum outer diameter of the processing groove (501);

a material ejecting hole (304) is formed in the bottom of the station tank (301), and one end of the material ejecting hole (304) is communicated with the processing tank (501); an output shaft of the hydraulic ejector rod (8) can movably penetrate through the material ejecting hole (304).

2. The multi-station die holder for the punch press according to claim 1, wherein: the upper die (201) is provided with two groups;

the station groove (301) is provided with three groups, three groups the station groove (301) is set up in the equilateral triangle form, and the center distance of three groups of station grooves (301) equals with the center distance of two groups of upper moulds (201).

3. The multi-station die holder for the punch press according to claim 2, wherein: the limiting ring (6) is positioned on one side, far away from the upper die holder (2), of the lower die holder (1), and the connecting line of the centers of the limiting ring (6) and the center of the tray groove (101) is perpendicular to the connecting line of the centers of the two groups of upper dies (201).

4. The multi-station die holder for a punch press according to claim 1 or 2, wherein: be provided with internal thread seat (302) in station groove (301), the outer wall of internal thread seat (302) passes through damping spring (303) with the inner wall of station groove (301) and is connected, damping spring (303) ring array sets up, bed die (5) screw thread installation is in internal thread seat (302), the one end of liftout hole (304) runs through internal thread seat (302) and processing groove (501) intercommunication.

5. The multi-station die holder for the punch press according to claim 1, wherein: lower mould tray (3) and tray groove (101) all set up to cylindrically, lower mould tray (3) and tray groove (101) clearance fit, the lateral wall of lower mould tray (3) rotates and installs ball (305), ball (305) ring array sets up on the lateral wall of lower mould tray (3).

6. The multi-station die holder for the punch press according to claim 1, wherein: the rotating mechanism (4) comprises a hydraulic cylinder (9) and a motor (10); the one end fixedly connected with motor case (11) of pneumatic cylinder (9) output shaft, motor (10) joint is fixed in motor case (11), the one end of motor (10) output shaft runs through motor case (11) and is located motor case (11) top, the first butt joint (13) of one end fixedly connected with of motor (10) output shaft, be provided with the cross lug on first butt joint (13).

7. The multi-station die holder for a punch press according to claim 5 or 6, wherein: the bottom center of the lower die tray (3) is fixedly provided with a second butt joint (14), the second butt joint (14) is provided with a cross-shaped groove, and the cross-shaped groove and the cross-shaped convex block are correspondingly arranged.

8. The multi-station die holder for the punch press according to claim 6, wherein: the upper end fixed mounting of motor case (11) has slewing bearing (12), the center of slewing bearing (12) is provided with the through hole, through hole and the inside intercommunication of motor case (11), first butt joint (13) are located the through hole.