CN104550748A - Automatic submersible motor copper end ring casting machine - Google Patents
Automatic submersible motor copper end ring casting machine Download PDFInfo
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- CN104550748A CN104550748A CN201510030840.7A CN201510030840A CN104550748A CN 104550748 A CN104550748 A CN 104550748A CN 201510030840 A CN201510030840 A CN 201510030840A CN 104550748 A CN104550748 A CN 104550748A
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- cylinder
- reversal valve
- cam
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- submersible motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention belongs to the technical field of manufacturing equipment of a copper end ring and particularly relates to special metal type automatic casting equipment of a submersible motor copper end ring. Aiming at solving the technical problems, an automatic submersible motor copper end ring casting machine with high manufacturing precision and good quality is provided. The technical scheme for solving the technical problems is as follows: the automatic submersible motor copper end ring casting machine comprises a bracket and an oil cylinder; the bracket comprises a plurality of supporting legs with supporting effects and a worktable arranged at the upper ends of the plurality of supporting legs; the worktable is connected with the plurality of supporting legs by elastic devices; a concave-convex die is arranged on the worktable; a concave die of the concave-convex die is movably connected with the worktable by a bolt; a cylinder body of the oil cylinder is fixedly arranged on the bracket; a piston rod of the oil cylinder is connected with the bottom end of a convex die; and a plurality of ejection columns for ejecting a casting piece are arranged at the upper end of the convex die. The casting piece produced by the automatic submersible motor copper end ring casting machine has good quality, good shrink filling performance, few pores, high precision and high density.
Description
Technical field
The invention belongs to the manufacturing equipment technical field of copper end ring, be specifically related to a kind of automatic Casting Equipment of special-purpose metal type of submersible motor copper end ring.
Background technology
Submersible motor copper end ring is one and has 20 grain type grooves and the higher cathode copper structural member of precision, manufacturing process difficulty is large, conventional cast cannot reach required precision, not only technology difficulty is large but also cost is high for machining, and powder metallurgy product shape and precision can reach, but density only about 7.6, do not meet motor mouse cage electromagnetic requirements, and fusing point is low, welding performance is poor, is finally also eliminated.Before this, employing " piece " technique that the copper end ring of submersible pump industry producer has, some employing machined " gear " structure copper end ring, also have and adopt powdered metallurgy copper end ring, all perfection cannot reach technological requirement, thoroughly cannot solve copper end ring and make a difficult problem, and existing operation be manual operation, automaticity is poor, and production efficiency is low.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is for providing a kind of accuracy of manufacture high and the measured integration of matter automatic submersible motor copper end ring casting machine.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of automation submersible motor copper end ring casting machine, comprise support and oil cylinder, support is by comprising many passive supporting legs and the workbench being arranged on many supporting leg upper ends, all be connected by elastic device between workbench with many supporting legs, workbench can move up and down relative to supporting leg, workbench is provided with male and female mold, the die of male and female mold is flexibly connected on the table by bolt, the cylinder body of oil cylinder is fixedly installed on support, the piston rod of oil cylinder is connected with the bottom of punch, the upper end of punch is provided with multiple fore-sets that foundry goods can be ejected, when the piston rod of oil cylinder moves upward to upper limit, the chamber that can cast is formed between die and punch.
Preferably, the structure of described oil cylinder is: comprise A cylinder, B cylinder, reversal valve A, reversal valve B, toggle A and toggle B, described A cylinder is identical with the structure of B cylinder, described reversal valve A and reversal valve B is mechanical switching valve, one end of described mechanical switching valve body is provided with commutation driving lever, the other end is provided with back-moving spring, and described reversal valve A is identical with the structure of reversal valve B, and toggle A is identical with the structure of toggle B;
The structure of A cylinder is: comprise cylinder body and piston rod, and two chambers jointly formed by cylinder body and piston rod, and have the chamber of piston rod to be I chamber in described two chambers, another one chamber is II chamber;
The piston rod of described A cylinder is connected with the connecting rod of toggle A, the straight reciprocating motion of A cylinder piston rod is changed into the circular motion of toggle A crank, the end of described toggle A crank is provided with the first cam, the outer rim of described first cam contacts with the commutation driving lever of the reversal valve A be arranged on above A cylinder, described first cam rotate a circle reversal valve A commutate twice, the piston of A cylinder completes a reciprocating stroke, by described first cam do not stop rotarily drive reversal valve A and realize automatic reverse;
The piston rod of described B cylinder is connected with the connecting rod of toggle B, the straight reciprocating motion of B cylinder piston rod is changed into the circular motion of toggle B crank, the end of described toggle B crank is provided with the second cam, the outer rim of described second cam contacts with the commutation driving lever of the reversal valve B be arranged on above B cylinder, described second cam rotate a circle reversal valve B commutate twice, the piston of B cylinder completes a reciprocating stroke, by described second cam do not stop rotarily drive reversal valve B and realize automatic reverse;
The actuator port A mouth of described reversal valve A is connected with II chamber with I chamber of B cylinder by emulsion pipeline respectively with B mouth, and the actuator port A mouth of described reversal valve B is connected with II chamber with I chamber of A cylinder by emulsion pipeline respectively with B mouth.
Described reversal valve A and reversal valve B is two-position four-way valve.
Described first cam is identical with the structure of the second cam.
Wherein, the lower end of described workbench is connected with the vibrating motor being arranged on oil cylinder both sides, by the vibration of vibrating motor, drive the vibration of male and female mold on workbench and workbench, improve the saturation degree of metallic solution, reduce the bubble in metallic solution, improve the quality of part, rate of reducing the number of rejects and seconds.
Preferably, described elastic device comprises spring, be connected by spring between workbench with supporting leg, inserted link is provided with in spring, the upper end of inserted link is fixedly installed on the table, and lower end is movably arranged in hollow supporting leg, and inserted link can pump in supporting leg, overall mechanism stable, the life-span is long.
Preferably, die is divided into upper die and lower die, described counterdie is fixedly connected with workbench, patrix and counterdie hinged, the patrix of die is provided with the dead head of opposite opened, upper groove is made up of the first die body and the second die body, first die body is provided with cast gate, the second die body is provided with rising head, one end of described first die body and the second die body is hinged, the other end is connected by locking system, and the first die body and the second die body are separated by locking system or close.Before casting starts, the first die body and the second die body are locked, between die and punch, form casting cavity; After having cast, the first die body is separated with the second die body, facilitates the taking-up of mo(u)lded piece.
Wherein, locking system is the cooperation of bolts and nuts, and structure is simple, practical.First die body is all flexibly connected jug with on the second die body, controls being separated with closed, convenient and practical, simple and reliable between first die body with the second die body by handle.
Preferably, supporting leg is hollow structure, and the upper end of supporting leg is provided with end cap, and the center of end cap has through hole, and the bottom of inserted link is fixedly connected with rounded tabs through after through hole, and the radius of catch is greater than the radius of through hole, ensures that inserted link can not depart from supporting leg.
Preferably, described multiple fore-set is vertical with the upper surface of punch to be arranged and center around punch is rounded uniform, due to the existence of fore-set, can leave casting hole on mo(u)lded piece, meet the demand of casting.
The beneficial effect that the present invention compared with prior art has is: the present invention adopts allosome to commutate, namely A cylinder controls commutation by B cylinder, B cylinder controls commutation by A cylinder, the present invention mainly utilizes toggle to move back and forth the rotary motion becoming crank, band moving cam rotates, cam promotes reversal valve commutation, thus the reciprocating motion of hydraulic control cylinder piston, reach commutation object, the present invention utilizes toggle to substitute traditional spring changement, substantially improve the stability of commutation, the generation at dead point can be prevented.The present invention adopts vibrating motor to vibrate to drive workbench, is conducive to discharging the bubble in metallic solution, and ensure that quality and the precision of foundry goods, the density of finished product is high, and percent defective is low.The present invention adopts integrally casting, and cost is low, avoids the welding in later stage, and the adaptability to changes of interiors of products is little, not yielding, long service life.Die of the present invention adopts the dead head of opposite opened, and feeding performance is good, and the quality of product promotes further.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is structural scheme of mechanism of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the structural representation of the patrix in Fig. 1.
Fig. 4 is the enlarged drawing at A place in Fig. 1.
Fig. 5 is the oil circuit schematic diagram of oil cylinder in the present invention.
In figure: 1 is support, 2 is oil cylinder, and 21 is the first cam, and 22 is the second cam, 3 is workbench, and 4 is vibrating motor, and 31 is supporting leg, and 32 is elastic device, 321 is spring, and 322 is inserted link, and 33 is end cap, and 34 is male and female mold, 341 is die, and 342 is punch, and 343 is fore-set, and 3411 is patrix, 3412 is counterdie, and 3413 is cast gate, and 3414 is rising head, 3415 is the first die body, and 3416 is the second die body, and 3417 is handle.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation, and accompanying drawing is the schematic diagram simplified, and only basic structure of the present invention is described in a schematic way, therefore it only shows the formation relevant with the present invention.
As shown in Fig. 1 ~ 5, a kind of automation submersible motor copper end ring casting machine, comprise support 1 and oil cylinder 2, support 1 is by comprising many passive supporting legs 31 and the workbench 3 being arranged on many supporting legs 31 upper end, all be connected by elastic device 32 between workbench 3 with many supporting legs 31, workbench 3 can move up and down relative to supporting leg 31, workbench 3 is provided with male and female mold 34, the die 341 of male and female mold 34 is movably connected on workbench 3 by bolt, the cylinder body of oil cylinder 2 is fixedly installed on support 1, the piston rod of oil cylinder 2 is connected with the bottom of punch 342, the upper end of punch 342 is provided with multiple fore-sets 343 that foundry goods can be ejected, when the piston rod of oil cylinder 2 moves upward to upper limit, the chamber that can cast is formed between die 341 and punch 342.
The structure of described oil cylinder 2 is: comprise A cylinder, B cylinder, reversal valve A, reversal valve B, toggle A and toggle B, described A cylinder is identical with the structure of B cylinder, described reversal valve A and reversal valve B is mechanical switching valve, one end of described mechanical switching valve body is provided with commutation driving lever, the other end is provided with back-moving spring, described reversal valve A is identical with the structure of reversal valve B, and toggle A is identical with the structure of toggle B;
The structure of A cylinder is: comprise cylinder body and piston rod, and two chambers jointly formed by cylinder body and piston rod, and have the chamber of piston rod to be I chamber in described two chambers, another one chamber is II chamber;
The piston rod of described A cylinder is connected with the connecting rod of toggle A, the straight reciprocating motion of A cylinder piston rod is changed into the circular motion of toggle A crank, the end of described toggle A crank is provided with the first cam 21, the outer rim of described first cam 21 contacts with the commutation driving lever of the reversal valve A be arranged on above A cylinder, described first cam 21 rotate a circle reversal valve A commutate twice, the piston of A cylinder completes a reciprocating stroke, by described first cam 21 do not stop rotarily drive reversal valve A and realize automatic reverse;
The piston rod of described B cylinder is connected with the connecting rod of toggle B, the straight reciprocating motion of B cylinder piston rod is changed into the circular motion of toggle B crank, the end of described toggle B crank is provided with the second cam 22, the outer rim of described second cam 22 contacts with the commutation driving lever of the reversal valve B be arranged on above B cylinder, described second cam 22 rotate a circle reversal valve B commutate twice, the piston of B cylinder completes a reciprocating stroke, by described second cam 22 do not stop rotarily drive reversal valve B and realize automatic reverse;
The actuator port A mouth of described reversal valve A is connected with II chamber with I chamber of B cylinder by emulsion pipeline respectively with B mouth, and the actuator port A mouth of described reversal valve B is connected with II chamber with I chamber of A cylinder by emulsion pipeline respectively with B mouth;
Wherein, the lower end of described workbench 3 is connected with the vibrating motor 4 being arranged on oil cylinder 2 both sides, by the vibration of vibrating motor 4, drive the vibration of male and female mold 34 on workbench 3 and workbench 3, improve the saturation degree of metallic solution, reduce the bubble in metallic solution, improve the quality of part, rate of reducing the number of rejects and seconds.
Wherein, described elastic device 32 comprises spring 321, be connected by spring 321 between workbench 3 with supporting leg 31, inserted link 322 is provided with in spring 321, the upper end of inserted link 322 is fixedly installed on workbench 3, and lower end is movably arranged in hollow supporting leg 31, and inserted link 322 can pump in supporting leg 31, overall mechanism stable, the life-span is long.
Wherein, die 341 is divided into patrix 3411 and counterdie 3412, described counterdie 3412 is fixedly connected with workbench 3, patrix 3411 is hinged with counterdie 3412, the patrix 3411 of die 341 is provided with the dead head 3414 of opposite opened, upper groove is made up of the first die body 3415 and the second die body 3416, first die body 3415 is provided with cast gate 3413, second die body 3416 is provided with rising head 3414, one end of described first die body 3415 and the second die body 3416 is hinged, the other end is connected by locking system, first die body 3415 and the second die body 3416 are separated by locking system or close.Before casting starts, the first die body 3415 and the second die body 3416 are locked, between die 341 and punch 342, forms cavity of casting; After having cast, the first die body 3415 is separated with the second die body 3416, facilitates the taking-up of mo(u)lded piece.
Wherein, locking system is the cooperation of bolts and nuts, and structure is simple, practical.
Wherein, the first die body 3415 is all flexibly connected jug 3417 with on the second die body 3416, controls being separated with closed, convenient and practical, simple and reliable between first die body 3415 with the second die body 3416 by handle 3417.
Wherein, supporting leg 31 is hollow structure, and the upper end of supporting leg 31 is provided with end cap 33, the center of end cap 33 has through hole, the bottom of inserted link 322 is fixedly connected with rounded tabs through after through hole, and the radius of catch is greater than the radius of through hole, ensures that inserted link 322 can not threshing supporting leg 31.
Wherein, described multiple fore-set 343 is vertical with the upper surface of punch 342 to be arranged and center around punch 342 is rounded uniform, due to the existence of fore-set 343, can leave casting hole on mo(u)lded piece, meet the demand of casting.
Described reversal valve A and reversal valve B is two-position four-way valve.Described first cam 21 is identical with the structure of the second cam 22.
Operating process is: before use, is upwards ejected by oil cylinder 2, drives punch 342 to move upward, to die 341 and punch 342 compacting, form the chamber that can hold matter between die 341 and punch 342, the first die body 3415 on patrix 3411 and the second die body 3416 are closed, and locking nut.From Vibration on Start-up motor 4, in cast gate 3413, pour into required copper solution, solution constantly shakes in chamber, and the bubble dissolved in the solution can be discharged, and avoids the bubble in foundry goods to produce.After having cast, treat that foundry goods cools, before foundry goods cools completely, the piston rod of oil cylinder 2 is regained, fore-set 343 leaves foundry goods, foundry goods leaves the hole needed for casting, continue cooling, hole is shunk, completely after cooling, removed by patrix 3411, piston rod protrudes upward foundry goods jack-up, completes one-step casting.The casting quality that the present invention produces is good, and feeding performance is good, and pore is few, and precision is high, and density is high.
The mistake that oil cylinder 2 realizes automatic cycle becomes: when reversal valve A actuator port A is by high-pressure emulsion, this high-pressure emulsion enters I chamber of B cylinder along emulsion pipeline, promote B cylinder piston to move right, low pressure emulsion in B cylinder II chamber flow back into emulsion cylinder through emulsion pipeline from the actuator port B of reversal valve A, in the process that B cylinder piston moves right, the piston rod of B cylinder drives the link motion of the toggle B be attached thereto, thus drive the crank of toggle B to circle, and then drive the second cam 22 to rotate, second cam 22 is oppressed or is unclamped the commutation driving lever of reversal valve B, reversal valve B is commutated, namely when the piston movement of B cylinder is to low order end, reversal valve B commutates, change the flow direction flowing into A cylinder emulsion, thus the piston movement direction of A cylinder is changed, now A cylinder piston otherwise be in the leftmost side of A cylinder, be in the rightmost side of A cylinder,
When reversal valve A actuator port B is by high-pressure emulsion, this high-pressure emulsion enters II chamber of B cylinder along emulsion pipeline, promote B cylinder piston to be moved to the left, low pressure emulsion in B cylinder I chamber flow back into emulsion cylinder through emulsion pipeline from the actuator port A of reversal valve A, in the process that B cylinder piston is moved to the left, the piston rod of B cylinder drives the link motion of the toggle B be attached thereto, thus drive the crank of toggle B to circle, and then drive the second cam 22 to rotate, second cam 22 is oppressed or is unclamped the commutation driving lever of reversal valve B, reversal valve B is commutated, namely when the piston movement of B cylinder is to high order end, reversal valve B commutates, change the flow direction flowing into A cylinder emulsion, thus the piston movement direction of A cylinder is changed, now A cylinder piston otherwise be in the leftmost side of A cylinder, be in the rightmost side of A cylinder.
Second cam 22 often rotates a circle, and reversal valve B completes twice commutation, and B cylinder piston is back and forth formed to completing one; First cam 21 often rotates a circle, and reversal valve A also completes twice commutation, and A cylinder piston is back and forth formed to completing one;
As from the foregoing, the piston of A cylinder and B cylinder or be synchronized with the movement, or a single direction stroke of difference piston.
Always have a cylinder efficient when feed liquor and reversal valve are connected, drive crank to rotate during work, crank transmission drives another cylinder working; Crank drives rotary valve to change flow direction another cylinder commutate, and this hockets and just achieves twin-tub and constantly commutate, and replaces continuous operation.
Because the curvature diameter of design crank equals the stroke of cylinder, so, oil cylinder often completes going out of a stroke and namely goes out to change over into carrying out twice commutation to another cylinder control valve, enter to change, the Commutating mechanism crank of reversal valve and the stroke of cylinder must just be joined, if other load is not with by cylinder, then can ceaselessly move back and forth, if its piston head has again piston rod pass from cylinder bottom and enter another cylinder barrel, then can complete hydraulic conversion, and export another pressure fluid.
By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.
Claims (8)
1. an automation submersible motor copper end ring casting machine, it is characterized in that, comprise support (1) and oil cylinder (2), described support (1) is by comprising many passive supporting legs (31) and being arranged on the workbench (3) of many supporting legs (31) upper end, all be connected by elastic device (32) between workbench (3) with many supporting legs (31), described workbench (3) is provided with male and female mold (34), the die (341) of male and female mold (34) is movably connected on workbench (3) by bolt, the cylinder body of described oil cylinder (2) is fixedly installed on support (1), the piston rod of oil cylinder (2) is connected with the bottom of punch (342), the upper end of punch (342) is provided with multiple fore-sets (343) that foundry goods can be ejected, when the piston rod of oil cylinder (2) moves upward to upper limit, the chamber that can cast is formed between described die (341) and punch (342),
The structure of described oil cylinder (2) is: comprise A cylinder, B cylinder, reversal valve A, reversal valve B, toggle A and toggle B, described A cylinder is identical with the structure of B cylinder, described reversal valve A and reversal valve B is mechanical switching valve, one end of described mechanical switching valve body is provided with commutation driving lever, the other end is provided with back-moving spring, described reversal valve A is identical with the structure of reversal valve B, and toggle A is identical with the structure of toggle B;
The structure of A cylinder is: comprise cylinder body and piston rod, and two chambers jointly formed by cylinder body and piston rod, and have the chamber of piston rod to be I chamber in described two chambers, another one chamber is II chamber;
The piston rod of described A cylinder is connected with the connecting rod of toggle A, the straight reciprocating motion of A cylinder piston rod is changed into the circular motion of toggle A crank, the end of described toggle A crank is provided with the first cam (21), the outer rim of described first cam (21) contacts with the commutation driving lever of the reversal valve A be arranged on above A cylinder, described first cam (21) rotate a circle reversal valve A commutate twice, the piston of A cylinder completes a reciprocating stroke, by described first cam (21) do not stop rotarily drive reversal valve A and realize automatic reverse;
The piston rod of described B cylinder is connected with the connecting rod of toggle B, the straight reciprocating motion of B cylinder piston rod is changed into the circular motion of toggle B crank, the end of described toggle B crank is provided with the second cam (22), the outer rim of described second cam (22) contacts with the commutation driving lever of the reversal valve B be arranged on above B cylinder, described second cam (22) rotate a circle reversal valve B commutate twice, the piston of B cylinder completes a reciprocating stroke, by described second cam (22) do not stop rotarily drive reversal valve B and realize automatic reverse;
The actuator port A mouth of described reversal valve A is connected with II chamber with I chamber of B cylinder by emulsion pipeline respectively with B mouth, and the actuator port A mouth of described reversal valve B is connected with II chamber with I chamber of A cylinder by emulsion pipeline respectively with B mouth;
The lower end of described workbench (3) is connected with the vibrating motor (4) being arranged on oil cylinder (2) both sides;
Described elastic device (32) comprises spring (321), be connected by spring (321) between described workbench (3) with supporting leg (31), inserted link (322) is provided with in spring (321), the upper end of inserted link (322) is fixedly installed on workbench (3), lower end is movably arranged in hollow supporting leg (31), and described inserted link (322) can pump in supporting leg (31).
2. a kind of automation submersible motor copper end ring casting machine according to claim 1, it is characterized in that, described reversal valve A and reversal valve B is two-position four-way valve.
3. a kind of automation submersible motor copper end ring casting machine according to claim 1, it is characterized in that, described first cam (21) is identical with the structure of the second cam (22).
4. a kind of automation submersible motor copper end ring casting machine according to claim 1, it is characterized in that, described die (341) is divided into patrix (3411) and counterdie (3412), described counterdie (3412) is fixedly connected with workbench (3), patrix (3411) is hinged with counterdie (3412), the patrix (3411) of described die (341) is provided with the dead head (3414) of opposite opened, upper groove is made up of the first die body (3415) and the second die body (3416), described first die body (3415) is provided with cast gate (3413), second die body (3416) is provided with rising head (3414), described first die body (3415) is hinged with one end of the second die body (3416), the other end is connected by locking system, described first die body (3415) and the second die body (3416) are separated by locking system or close.
5. a kind of automation submersible motor copper end ring casting machine according to claim 4, it is characterized in that, described locking system is the cooperation of bolts and nuts.
6. a kind of automation submersible motor copper end ring casting machine according to claim 5, it is characterized in that, described first die body (3415) is all flexibly connected jug (3417) with on the second die body (3416).
7. a kind of automation submersible motor copper end ring casting machine according to claim 6, it is characterized in that, described supporting leg (31) is hollow structure, the upper end of supporting leg (31) is provided with end cap (33), the center of end cap (33) has through hole, the bottom of described inserted link (322) is fixedly connected with rounded tabs through after through hole, and the radius of described catch is greater than the radius of through hole.
8. a kind of automation submersible motor copper end ring casting machine according to claim 7, is characterized in that, described multiple fore-set (343) is vertical with the upper surface of punch (342) to be arranged and center around punch (342) is rounded uniform.
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| CN201510030840.7A CN104550748B (en) | 2015-01-22 | 2015-01-22 | Automatic submersible motor copper end ring casting machine |
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| CN201510030840.7A CN104550748B (en) | 2015-01-22 | 2015-01-22 | Automatic submersible motor copper end ring casting machine |
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| CN104550748B CN104550748B (en) | 2017-01-18 |
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| CN202804151U (en) * | 2012-07-30 | 2013-03-20 | 巨石集团有限公司 | Bushing oscillating pouring device |
| CN103982483A (en) * | 2014-05-10 | 2014-08-13 | 长治市永华机械有限公司 | Mechanism for realizing automatic reversing through a distributing slide valve |
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