CN112373088A

CN112373088A - Nondestructive numerical control hydraulic press for powder strip body

Info

Publication number: CN112373088A
Application number: CN202011206647.1A
Authority: CN
Inventors: 黄静; 黄良以
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-02-19

Abstract

The invention discloses a nondestructive numerical control hydraulic press for a powder strip body, which comprises a frame, a hydraulic system, a controller and a feeding mechanism assembled on the frame, wherein an upper template, a middle template and a lower template are arranged on the frame, the upper template, the middle template and the lower template are movably connected by a stand column, a working plate is arranged on the middle template, a guide shaft is oppositely arranged on the working plate, two ends of the guide shaft are fixedly arranged on a supporting seat, a shaft seat is movably arranged on the guide shaft, a material storage box capable of moving left and right along the horizontal direction of the working plate is fixedly connected between the shaft seats, a material storage cavity is arranged in the material storage box, and an inserting plate is arranged between the lower bottom surface of the material storage box and the working plate. The powder can be accurately and quickly injected into the molding cavity by adopting the measurement of volume, revolution and time.

Description

Nondestructive numerical control hydraulic press for powder strip body

Technical Field

The invention relates to the technical field of powder injection molding hydraulic pressure, in particular to a numerical control hydraulic machine for powder injection molding of long-strip product parts.

Background

Powder Injection Molding (PIM) is an advanced near-net-shape forming technology which introduces an Injection Molding technology into Powder metallurgy, and a PIM process is adopted to manufacture long small parts in large batch by using a hydraulic machine, so that the problems of large material consumption, large processing time, unstable quality, incapability of forming large batch and the like in the traditional mechanical manufacturing process can be solved. The PIM process is adopted to manufacture the strip small parts in a large scale, so that the processing procedures can be greatly reduced, the material utilization rate can reach 99 percent, the processing cost is reduced, the product precision is improved, and the like. However, when the hydraulic press is used for manufacturing the elongated three-dimensional space structure part for powder pressing, firstly, when the weight method is adopted for measuring the weight of the metallurgical powder, the weighing scale and the related material storage and conveying device are required to be adopted for completion, so that the space area of a factory is occupied, and the large-scale production is not convenient; secondly, when the feed hopper feed opening moves to the pressure forming position from the feeding position, fine metallurgical powder is remained between the feed opening and the upper plane of the working plate, after a section of feed hopper is used, more and more metallurgical powder particles are remained, hard metallurgical powder particles are bonded together to form larger particles, the upper planes of the die and the working plate can be scratched and pulled, the forming die can be damaged, and even the product quality is reduced.

Disclosure of Invention

Aiming at the problems of the powder strip body part in the prior art during the compression molding, the invention provides the injection molding numerical control hydraulic press which has the advantages of accurate material quantity, quick feeding, no residual powder, no damage to the surface of a working plate and a die and contribution to molding and pressing.

The technical scheme adopted by the technical problem to be solved by the invention is as follows: a nondestructive numerical control hydraulic press for powder long strips comprises a rack, a hydraulic system, a controller and a feeding mechanism assembled on the rack, wherein an upper template, a middle template and a lower template are arranged on the rack, the upper template, the middle template and the lower template are movably connected through an upright post, a working plate is arranged on the middle template, guide shafts are oppositely arranged on the working plate, two ends of each guide shaft are movably arranged on a supporting seat, shaft seats are movably arranged on the guide shafts, a material storage box capable of moving left and right along the horizontal direction of the working plate is fixedly arranged between the shaft seats, a material storage cavity is arranged in the material storage box, an insertion plate is arranged between the lower bottom surface of the material storage box and the working plate, when the insertion plate moves to the edge position of a forming cavity arranged on the working plate along with the material storage box, the insertion plate stops moving right when contacting with a limiting plate, and the material storage box continues to move right until a lower opening of the material storage box is opposite to the forming cavity arranged .

Furthermore, limiting rods are arranged on two sides of the rear end of the plug board, so that the plug board is convenient to contact with the limiting plates.

Furthermore, two sides of the insertion plate are movably matched with a guide groove arranged at the lower part of the material storage box.

The feeding mechanism comprises a middle hopper fixed on the rack, the middle hopper is U-shaped, a rotating roller driven to rotate by a servo motor is arranged in the middle hopper, material distributing plates are arranged on the rotating shaft at intervals along the axial direction, and a powder discharge hole is formed in the lower end of the middle hopper. The amount of powder entering the hopper is determined by the speed of rotation of the servo motor, the time and the volume between the distributing plates.

In order to enable powder in the material storage box to rapidly enter the forming cavity, a stirring head capable of moving left and right is arranged in the material storage box, the lower end of the stirring head is located at the lower end in the material storage box, the upper end of the stirring head is connected with a stirring rod which horizontally moves through the two ends of the material storage box, one end of the stirring rod is provided with an insertion piece, when the stirring rod moves right along with the material storage box, the insertion piece at the other end of the stirring rod is inserted into a slot on a socket connected with a piston rod of a stirring oil cylinder, and the piston rod.

The invention has the following brief working process: selecting the rotation speed and rotation time of a servo motor with corresponding product powder amount according to product specifications, starting the servo motor, enabling the powder to enter a storage cavity in a storage box, stopping the rotation time of the servo motor when the rotation time reaches the selected rotation time, starting a box pushing oil cylinder after feeding, pushing a storage box to move rightwards by a push rod, stopping the storage box moving rightwards when the side surfaces of shaft seats connected with the two ends of the storage box are contacted with a second stroke switch, respectively actuating an upper punch and a lower punch to take out products in a forming cavity, respectively returning the upper punch and the lower punch to original positions, continuously moving the storage box rightwards, stopping the insertion plate at the lower part of the storage box moving rightwards under the action of a limiting plate when the storage box moves rightwards to a forming cavity position, continuously moving the storage box rightwards, and when the side surfaces of the shaft seats connected with the two ends of the storage box are contacted with a third stroke, the material storage box stops moving rightwards, at the moment, the material storage cavity in the material storage box is over against the forming cavity, and powder in the material storage cavity enters the forming cavity to be pressed.

The invention adopts the first that the plugboard is arranged between the lower bottom surface of the material storage box and the working plate, so that powder material is kept in the material storage cavity and moves along with the material storage box in the process of moving along with the material storage box to the front of pressing, the powder material is ensured not to permeate the working plate surface, and the working plate surface and a die are not damaged, thereby solving the problems existing in the prior art, prolonging the service cycle of a model, and being beneficial to forming the quality of pressed products, and secondly, the rotary roller is adopted to accurately, quantitatively and rapidly inject the powder in the material storage cavity into the forming cavity through the rotating revolution and time, and the weight of the powder is accurately, rapidly and smoothly measured by adopting the volume, the revolution and the time.

Drawings

FIG. 1 is a schematic top view showing a storage box before pressing in a material receiving starting position according to the present invention,

figure 2 is a schematic cross-sectional view a-a of figure 1,

figure 3 is a schematic cross-sectional view of B-B of figure 1,

figure 4 is a schematic cross-sectional view of the structure of figure 2C-C,

FIG. 5 is a schematic top view of a cartridge of the present invention in a blanking-terminating position prior to compression.

In the figure, 1, a box pushing oil cylinder 2, a pushing rod 3, a connecting plate 4, an insertion plate 5, a working plate 6, a left material storage plate 7, a left supporting seat 8, a limiting rod 9, a travel switch I10, a shaft seat 11, an insertion piece 12, a stirring oil cylinder 13, an insertion groove 14, a travel switch II 15, a travel switch III 16, a guide shaft 17, an upright post 18, a right supporting seat 19, an upper punch seat 20, a right forming die 21, a left forming die 22, a right material storage plate 23, a limiting plate 24, a stirring rod 25, a forming cavity 26, an upper oil cylinder 27, a guide groove 28, a discharge hole 29, an intermediate hopper 30, a main hopper 31, an upper die plate 32, an upper punch 33, a rotating shaft 34, an intermediate die plate 35, a lower punch 36, a material distributing plate 37, a rotating roller 38, a rotating head 39, a lower die plate, A servo motor 43, a material storage cavity 44, a lower oil cylinder 45 and a lower punch seat.

Detailed Description

In the figure, the nondestructive numerical control hydraulic press for the powder strip comprises a frame, a hydraulic system, a controller and a feeding mechanism assembled on the frame, wherein an upper template 31, a middle template 34 and a lower template 39 are arranged on the frame, the upper template, the middle template and the lower template are movably connected by four upright posts 17, an upper oil cylinder 26 is arranged on the upper template, the upper oil cylinder 26 is connected with an upper punch seat 19 through a piston rod, the lower end of the upper punch seat 19 is connected with an upper punch 32, a lower oil cylinder 44 is arranged on the lower template, the lower oil cylinder is connected with a lower punch seat 45 through a piston rod, the upper end of the lower punch seat is connected with a lower punch 35, a working plate 5 is arranged on the middle template, a parallel guide shaft 16 is oppositely arranged on the working plate, the two ends of the guide shaft are fixedly arranged on a left supporting seat 7 and a right supporting seat 18, a guide shaft 10 is movably arranged on the guide shaft, a material storage box which can move left and right along the horizontal direction of the working plate is fixed and continuous between the shaft seats, the material storage box consists of a left material storage plate 6 and a right material storage plate 22 which are in a channel steel shape, a connecting plate 3 is arranged on the side surface of the left material storage plate, the connecting plate is movably connected with one end of a push rod 2, the other end of the push rod is connected with a box pushing oil cylinder 1, a material storage cavity 43 with a V-shaped cross section and open upper and lower ends is arranged in the material storage box, an inserting plate 4 is arranged between the lower bottom surface of the material storage box and the working plate, the upper surface of the inserting plate is contacted with the lower bottom surface of the material storage box, the lower bottom surface of the inserting plate is contacted with the upper surface of the working plate, limit rods 8 are arranged on two sides of the rear end (the left end in figure 1) of the inserting plate, convex bodies (not marked in the figure) at the lower ends of the inserting plate are movably matched with a guide groove 27 arranged at, when the limiting rod on the insertion plate is contacted with the limiting plate, the insertion plate stops moving rightwards, the storage box continues to move rightwards until the lower port of the storage box is opposite to the forming cavity arranged on the working plate, the storage box stops moving leftwards, and the feeding mechanism is positioned above the position, at the left end, of the storage box. The forming cavity 25 comprises a right forming die 20, a left forming die 21 and an end die 40, a travel switch I9, a travel switch II 14 and a travel switch III 15 are sequentially arranged on the side face of the working plate from left to right, and a limiting plate 23 is arranged on the working plate on the left of the travel switch II 14.

The feeding mechanism comprises a middle hopper 29 fixed on the rack, the middle hopper is connected with a main hopper 30 at the same phase end, the cross section of the middle hopper is in an inclined U shape, a rotating shaft 33 with two ends movably supported on the middle hopper is arranged in the middle hopper, a rotating roller 37 is arranged on the rotating shaft, one end of the rotating shaft is connected with a rotating head 38, the rotating hopper is connected with the output end of a servo motor 42, six rectangular material distributing plates 36 are arranged on the rotating roller at intervals along the axial direction, and a rectangular material outlet 28 is arranged at the lower end of the middle hopper. The amount of powder entering the hopper is determined by the speed of rotation of the servo motor, the time and the volume between the distributing plates.

In order to enable powder in the storage box to rapidly enter a forming cavity, a stirring head 41 capable of moving left and right is arranged in the storage box, the lower end of the stirring head is located at the lower end in the storage box, the upper end of the stirring head is connected with a stirring rod 24 which horizontally moves through the two ends of the storage box, one end of the stirring rod is provided with an inserting piece 11, when the stirring rod moves right along with the storage box, the inserting piece at the other end of the stirring rod is inserted into a slot 13 on a socket connected with a piston rod of a stirring oil cylinder 12, the piston rod moves back and forth to drive the stirring rod to move back and forth, and therefore the flow of an.

The hydraulic system and the controller of the invention are all in the prior art.

Claims

1. The utility model provides a powder rectangular body nondestructive numerical control hydraulic press, it includes frame, hydraulic system, controller and joins in marriage the feeding mechanism who adorns in the frame, be provided with cope match-plate pattern (31), well template (34) and lower bolster (39) in the frame, use stand (17) activity to link to each other between cope match-plate pattern, well template and the lower bolster, be provided with work board (5) on the well template, characterized by: the material storage device is characterized in that the working plate is oppositely provided with a guide shaft (16), two ends of the guide shaft are fixedly arranged on the supporting seat, shaft seats (10) are movably arranged on the guide shaft, a material storage box capable of moving left and right along the horizontal direction of the working plate is fixedly connected between the shaft seats, a material storage cavity (43) is arranged in the material storage box, an insertion plate (4) is arranged between the lower bottom surface of the material storage box and the working plate, the insertion plate is in contact with a limiting plate (23) when moving to the edge position of the forming cavity arranged on the working plate along with the material storage box, the insertion plate stops moving right, and the material storage box continues to move right until the lower opening of the material storage box is opposite to the forming cavity.

2. The nondestructive numerical control hydraulic press for powder long bodies according to claim 1, wherein: feeding mechanism is including fixing middle hopper (29) in the frame, the transversal U-shaped of personally submitting the slope of middle hopper is equipped with pivot (33) in the middle hopper, is provided with in the pivot and changes roller (37), and pivot one end links to each other with rotating head (38), and the rotating head links to each other with by servo motor (42) output, it is provided with rectangular branch flitch (36) along axial interval on the roller to change, middle hopper lower extreme is provided with rectangular discharge gate (28).

3. The nondestructive numerical control hydraulic press for powder long bodies according to claim 1, wherein: the stirring device is characterized in that a stirring head (41) capable of moving left and right is arranged in the material storage box, the lower end of the stirring head is located at the lower end in the material storage box, the upper end of the stirring head is connected with a stirring rod (24) which horizontally moves through the two ends of the material storage box, one end of the stirring rod is provided with an insertion piece (11), when the stirring rod moves right along with the material storage box, the insertion piece at the other end of the stirring rod is inserted into a slot (13) on a socket connected with a piston rod of a stirring oil cylinder.

4. The nondestructive numerical control hydraulic press for powder long bodies according to claim 1, wherein: limiting rods (8) are arranged on two sides of the rear end of the insertion plate (4).

5. The nondestructive numerical control hydraulic press for powder long bodies according to claim 1, wherein: the convex bodies at the lower ends of the two sides of the inserting plate (4) are movably matched with a guide groove (27) arranged at the lower part of the material storage box.