CN113909324B

CN113909324B - Swing extruder

Info

Publication number: CN113909324B
Application number: CN202111010980.XA
Authority: CN
Inventors: 杨宇杰; 杨卫南; 陈雪华
Original assignee: Jiangyin Feijie Machinery Manufacturing Co ltd
Current assignee: Jiangyin Feijie Machinery Manufacturing Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2024-12-06
Anticipated expiration: 2041-08-31
Also published as: CN113909324A

Abstract

The present invention relates to a swing extruder, which comprises a frame, an upper die frame is arranged on the upper part of the frame, a swing rod is vertically installed in the center of the upper die frame, a bearing is arranged near the upper end of the swing rod, a square sleeve is mounted on the bearing, a mounting plate is arranged above the square sleeve, four front, rear, left and right cushion blocks are arranged at the bottom of the mounting plate, four front, rear, left and right swing oil cylinders are arranged on the periphery of the four front, rear, left and right cushion blocks, the piston rod ends of the four front, rear, left and right swing oil cylinders are respectively connected to the four front, rear, left and right cushion blocks, and the four front, rear, left and right cushion blocks are respectively fitted with the four front, rear, left and right outer sides of the square sleeve. The present invention pushes the swing rod at intervals through the four front, rear, left and right oil cylinders, so that the swing rod drives the upper die to swing and extrude, reduces the contact area of pressurization, thereby reducing the extrusion force, realizing the molding of large workpieces with small tonnage, reducing energy consumption, and reducing the manufacturing cost of the product.

Description

Swing extruder

Technical Field

The invention relates to a swinging extruder, and belongs to the technical field of forging equipment.

Background

When a product with a larger diameter is extruded by ordinary cold extrusion, since the extrusion force is proportional to the square of the diameter when the diameter is increased due to the pressure f=p pi r ², the tonnage of the press is required to be very large when a part with a large diameter is extruded. The swing rolling is a new plastic forming method, and the contact area between the tool and the blank is limited, so that the deformation force can be reduced, and a larger workpiece can be gradually formed by using smaller force.

In the prior art, a swing rolling motion pair of a swing rolling machine is mainly realized by adopting a plurality of bearing combinations or spherical sliding. When a plurality of bearings are combined, as the swing angle (1-3 degrees) is needed for swing rolling, the bearing has unbalanced load in the stress process, so that bearing balls are unevenly stressed, fewer balls are stressed too much, and the service life of the bearing is very short, therefore, the bearing needs to be frequently replaced, the swing rolling machine needs to be frequently stopped for adjustment and maintenance, the production efficiency is greatly reduced, and the daily maintenance cost of equipment is increased.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a swing extruder aiming at the prior art, which pushes a swing rod at intervals through four cylinders at the front, the back, the left and the right, so that the swing rod drives an upper die to swing and extrude, and the contact area of pressurization is reduced, thereby reducing the extrusion force, realizing small tonnage forming of large workpieces, reducing energy consumption and reducing the manufacturing cost of products.

The technical scheme includes that the swing extruder comprises a frame, an upper die frame is arranged at the upper part of the frame, a swing rod is vertically arranged in a penetrating mode at the center of the upper die frame, a bearing is arranged at the position, close to the upper end, of the swing rod, a square sleeve is sleeved on the bearing, a mounting plate is arranged above the square sleeve, four cushion blocks are arranged at the bottom of the mounting plate, four swing cylinders are respectively arranged at the peripheries of the four cushion blocks, and piston rod ends of the four swing cylinders are respectively connected with the four cushion blocks, and the four cushion blocks are respectively attached to four outer side surfaces of the square sleeve.

Optionally, the pendulum rod lower extreme is provided with spherical upper die base, adopt spherical cooperation between spherical upper die base and the upper die carrier, be provided with the mould on the spherical upper die base, be provided with the die holder below the spherical upper die base, be provided with the lower mould on the die holder, go up mould and lower mould matched with.

Optionally, a lifting oil cylinder is vertically arranged below the lower die holder, and the upper end of the lifting oil cylinder is connected with the lower die holder.

Optionally, the lower die holder is provided with a plurality of guide posts, the spherical upper die holder is provided with a plurality of guide holes, and the guide posts are respectively matched with the guide holes.

Optionally, a step is arranged at a position of the swing rod close to the upper end, the bearing support is arranged on the step, a gland is arranged above the swing rod, and the gland is connected with the upper end of the swing rod through a bolt.

Optionally, a circle of flange is arranged on the inner side of the square sleeve, and the flange support is arranged on the bearing.

Optionally, a pressing plate is arranged above the mounting plate, and the pressing plate is connected with the upper end of the swing rod through a bolt.

Optionally, a spherical gasket is arranged in the middle of the swing rod, the spherical gasket is supported and arranged on the upper die frame, and the spherical gasket is in spherical fit with the upper die frame.

Optionally, the spherical gasket is sleeved on the swing rod, a threaded section is arranged on the swing rod in an area above the spherical gasket, and a locking nut is arranged on the threaded section.

Optionally, a limiting snap ring is arranged on the periphery of the spherical gasket, a plurality of clamping blocks are arranged on the periphery of the spherical gasket, clamping grooves are formed in the positions, corresponding to the clamping blocks, of the limiting snap ring, and the clamping blocks are matched with the clamping grooves.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the swing rods are pushed at intervals by the front oil cylinder, the rear oil cylinder, the left oil cylinder and the right oil cylinder, so that the swing rods drive the upper die to swing and squeeze, the contact area of pressurization is reduced, the extrusion force is reduced, the small-tonnage large-workpiece forming is realized, the energy consumption is reduced, and the manufacturing cost of a product is reduced;

2. the swing rod drives the upper die to swing and extrude, the contact surface is small, the extrusion forming force is small, the contact surface is small, the extrusion forming process is gradually expanded and formed along the spiral surface, the deformation process is gradually accumulated with small deformation, the whole deformation is finally completed, the limit deformation degree is 10% higher than that of the common cold extrusion, and the deformation force is only 1/6-1/20 of that of the common extrusion;

3. the invention can extrude very thin flange edges, and the thickness of the thinnest flange edges can be below 0.5mm due to partial forming and small contact surface;

4. The invention has high extrusion precision and good surface finish, the diameter direction of the extrusion precision is 0.02mm, and the surface finish reaches Ra0.4;

5. the spherical bearing is sleeved at the upper end of the swing rod, the square sleeve is arranged outside the spherical bearing, the connecting plate is arranged above the square sleeve, the connecting plate is provided with the front, back, left and right cushion blocks, the four cushion blocks respectively prop against the four outer side surfaces of the square sleeve, the piston rod ends of the front, back, left and right four oil cylinders are respectively connected with the four cushion blocks, the power of the oil cylinders does not directly act on the spherical bearing, and the spherical bearing only bears radial force, so that the damage of the spherical bearing can be effectively prevented, the service life of equipment is greatly prolonged, and the maintenance cost is reduced;

6. According to the invention, the four oil cylinders are used for pushing the swing rod at intervals, the action sequence of the four oil cylinders is controlled through the PLC, the swing efficiency of the swing rod is high, and the production efficiency of equipment can be effectively improved.

Drawings

FIG. 1 is a schematic diagram of a swing extruder according to the present invention.

Fig. 2 is a cross-sectional view A-A of fig. 1.

Fig. 3 is an enlarged view of a portion B of fig. 1.

Wherein:

Rack 1

Upper die carrier 2

Swing link 3

Spherical upper die holder 4

Upper die 5

Lower die holder 6

Lower die 7

Bearing 8

Square sleeve 9

Mounting plate 10

Cushion block 11

Swing cylinder 12

Lifting cylinder 13

Guide post 14

Guide hole 15

Step 16

Gland 17

Flange 18

Platen 19

Spherical spacer 20

Thread segment 21

Lock nut 22

And a limit snap ring 23.

Detailed Description

As shown in fig. 1 and 2, the swing extruder in this embodiment includes a frame 1, an upper die frame 2 is disposed at the upper portion of the frame 1, a swing rod 3 is vertically installed in the center of the upper die frame 2 in a penetrating manner, a spherical upper die holder 4 is disposed at the lower end of the swing rod 3, spherical upper die holder 4 and upper die frame 2 are in spherical fit, an upper die 5 is disposed on the spherical upper die holder 4, a lower die holder 6 is disposed below the spherical upper die holder 4, a lower die 7 is disposed on the lower die holder 6, and the upper die 5 is matched with the lower die 7;

The swing rod 3 is provided with a bearing 8 near the upper end, a square sleeve 9 is sleeved on the bearing 8, a mounting plate 10 is arranged above the square sleeve 9, four cushion blocks 11 are arranged at the bottom of the mounting plate 10, four swing cylinders 12 are respectively arranged at the periphery of the four cushion blocks 11, the four swing cylinders 12 are fixedly arranged on the frame 1, the piston rod ends of the four swing cylinders 12 are respectively connected with the four cushion blocks 11, and the four cushion blocks 11 are respectively attached to the four outer side surfaces of the square sleeve 9;

a lifting oil cylinder 13 is vertically arranged below the lower die holder 6, and the upper end of the lifting oil cylinder 13 is connected with the lower die holder 6;

The lower die holder 6 is provided with a plurality of guide posts 14, the spherical upper die holder 4 is provided with a plurality of guide holes 15, and the guide posts 14 are respectively matched with the guide holes 15, so that the concentricity of the upper die and the lower die is ensured;

a step 16 is arranged at the position, close to the upper end, of the swing rod 3, the bearing 8 is supported and arranged on the step 16, a gland 17 is arranged above the swing rod 3, and the gland 17 is connected with the upper end of the swing rod 3 through a bolt, so that the bearing 8 is fixed;

The bearing 8 is a spherical bearing;

a circle of flange 18 is arranged on the inner side of the square sleeve 9, and the flange 18 is supported and arranged on the bearing 8;

A pressing plate 19 is arranged above the mounting plate 10, and the pressing plate 19 is connected with the upper end of the swing rod 3 through a bolt, so that the structural strength of the mounting plate 10 can be enhanced;

The middle part of the swing rod 3 is provided with a spherical gasket 20, the spherical gasket 20 is supported and arranged on the upper die frame 2, and the spherical gasket 20 is in spherical fit with the upper die frame 2;

The spherical gasket 20 is sleeved on the swing rod 3, a threaded section 21 is arranged on the swing rod 3 in the area above the spherical gasket 20, a locking nut 22 is arranged on the threaded section 21, and the spherical gasket 20 and the upper die frame are fixed through the locking nut 22;

The periphery of the spherical gasket 20 is provided with a limiting snap ring 23, the limiting snap ring 23 is fixed with the frame 1 through bolts, the periphery of the spherical gasket 20 is provided with a plurality of clamping blocks, clamping grooves are formed in the positions, corresponding to the clamping blocks, of the limiting snap ring 23, the clamping blocks are matched with the clamping grooves, the upper die can be prevented from moving in the circumferential direction, the upper die is guaranteed to only swing, and therefore dislocation movement of the relative positions of the upper die and the lower die is avoided.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A swing extruder, characterized in that it comprises a frame (1), an upper die frame (2) is arranged on the upper part of the frame (1), a swing rod (3) is vertically penetrated through the center of the upper die frame (2), a bearing (8) is arranged near the upper end of the swing rod (3), a square sleeve (9) is sleeved on the bearing (8), a mounting plate (10) is arranged above the square sleeve (9), four front, rear, left and right cushion blocks (11) are arranged at the bottom of the mounting plate (10), four front, rear, left and right swing oil cylinders (12) are arranged on the periphery of the four front, rear, left and right cushion blocks (11), piston rod ends of the four front, rear, left and right swing oil cylinders (12) are respectively connected to the four front, rear, left and right cushion blocks (11), and the four front, rear, left and right cushion blocks (11) are respectively fitted with the four front, rear, left and right outer side surfaces of the square sleeve (9); the four front, rear, left and right cylinders push the swing rod at intervals, and the action sequence of the four oil cylinders is controlled by PLC to gradually expand and form along the spiral surface.

2. A swing extruder according to claim 1, characterized in that: a spherical upper die seat (4) is provided at the lower end of the swing rod (3), a spherical fit is adopted between the spherical upper die seat (4) and the upper die frame (2), an upper die (5) is provided on the spherical upper die seat (4), a lower die seat (6) is provided below the spherical upper die seat (4), a lower die (7) is provided on the lower die seat (6), and the upper die (5) and the lower die (7) are matched.

3. A swing extruder according to claim 2, characterized in that: a lifting cylinder (13) is vertically arranged below the lower die base (6), and the upper end of the lifting cylinder (13) is connected to the lower die base (6).

4. A swing extruder according to claim 2, characterized in that: a plurality of guide pillars (14) are arranged on the lower die seat (6), a plurality of guide holes (15) are opened on the spherical upper die seat (4), and the plurality of guide pillars (14) are respectively matched with the plurality of guide holes (15).

5. A swing extruder according to claim 1, characterized in that: a step (16) is provided near the upper end of the swing rod (3), the bearing (8) is supported on the step (16), a pressure cover (17) is provided above the swing rod (3), and the pressure cover (17) is connected to the upper end of the swing rod (3) by bolts.

6. A swing extruder according to claim 1, characterized in that: a circle of flange (18) is arranged on the inner side of the square sleeve (9), and the flange (18) is supported on the bearing (8).

7. A swing extruder according to claim 1, characterized in that a pressure plate (19) is arranged above the mounting plate (10), and the pressure plate (19) is connected to the upper end of the swing rod (3) by bolts.

8. A swing extruder according to claim 1, characterized in that: a spherical gasket (20) is arranged in the middle of the swing rod (3), and the spherical gasket (20) is supported on the upper mold frame (2), and a spherical fit is adopted between the spherical gasket (20) and the upper mold frame (2).

9. A swing extruder according to claim 8, characterized in that: the spherical gasket (20) is mounted on the swing rod (3), and the swing rod (3) is provided with a threaded section (21) in the area above the spherical gasket (20), and a locking nut (22) is provided on the threaded section (21).

10. A swing extruder according to claim 8, characterized in that: a limit clamping ring (23) is arranged on the periphery of the spherical gasket (20), a plurality of clamping blocks are arranged on the periphery of the spherical gasket (20), the limit clamping ring (23) has a clamping groove at a position corresponding to the clamping block, and the clamping block cooperates with the clamping groove.