CN211250559U

CN211250559U - Arc-shaped forming die for electronic ceramic chip

Info

Publication number: CN211250559U
Application number: CN201921361322.3U
Authority: CN
Inventors: 李德求; 赵华海; 颜伟
Original assignee: Kunshan Xiangbei Precision Metal Co ltd
Current assignee: Kunshan Xiangbei Precision Metal Co ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-08-14
Anticipated expiration: 2029-08-21

Abstract

An arc-shaped forming die for an electronic ceramic chip comprises a stamping mechanism, a forming mechanism and a base, wherein the stamping mechanism is arranged on the forming mechanism, and the forming mechanism is arranged on the base through a screw; the forming mechanism comprises a male die, a female die, a positioning mechanism, an upper die base, a lower die base, a material ejecting plate and a rectangular spring. A arc forming die for electron potsherd, simple structure, the installation and debugging is convenient, the operation elasticity of system is big, the precision is high, reduces the resilience problem, reliable and stable to maintenance, the quick change of each part of mould are convenient, have improved the mould life-span, have improved the arc forming efficiency and the quality of electron potsherd effectively.

Description

Arc-shaped forming die for electronic ceramic chip

Technical Field

The utility model relates to a mould field, concretely relates to arc forming die for electron potsherd.

Background

The electronic ceramics are ceramics that can utilize electric and magnetic properties in the electronics industry. The electronic ceramics are also called as ceramics for electronic industry, and have essential differences from the common ceramics for electric power in terms of chemical composition, microstructure and electromechanical properties. These differences are due to a series of special technical requirements of electronic ceramics in the electronics industry, and the most important of them is to have high mechanical strength, high temperature and humidity resistance, radiation resistance, wide variation of dielectric constant, small dielectric loss tangent, adjustable temperature coefficient of capacitance (or adjustable capacitance variation rate), high dielectric strength and insulation resistance, and excellent aging performance. The electronic ceramic is a ceramic with new functions finally obtained through the precise control of the surface, grain boundary and size structure. It can be widely applied to energy sources, household appliances, automobiles and the like.

The stamping forming is a processing method for stamping the electronic ceramic sheet by using a die with a shape similar to that of a part to enable the electronic ceramic sheet to be subjected to plastic deformation so as to obtain the part with a required shape and size. Compared with other processing methods, the stamping forming has many advantages, such as high production efficiency, low cost, simple machine tool operation, stable size precision of formed parts and the like, and therefore, the stamping forming method is widely applied to the manufacturing fields of automobiles, electric appliances, ships, subways, aerospace and the like.

Chinese patent application No. CN200420052849.5 discloses a general bending die, which comprises a male die and a female die, wherein the female die is provided with a plurality of bending grooves with different depths, and the problems of springback, positioning and the like after forming are not considered.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the above not enough, the utility model aims at providing an arc forming die for electron potsherd, simple structure, installation and debugging are convenient, and the operating elasticity of system is big, and the precision is high, reduces the resilience problem, and is reliable and stable to the maintenance of each part of mould, quick change are convenient, have improved the mould life-span, have improved the arc forming efficiency and the quality of electron potsherd effectively.

The technical scheme is as follows: an arc-shaped forming die for an electronic ceramic chip comprises a stamping mechanism, a forming mechanism and a base, wherein the stamping mechanism is arranged on the forming mechanism, and the forming mechanism is arranged on the base through a large screw; the forming mechanism comprises a male die, a female die (22), a positioning mechanism, an upper die holder, a lower die holder, a material ejecting plate and a rectangular spring, wherein the upper die holder is provided with a stamping hole penetrating through the upper die holder, the lower end of the stamping mechanism is connected with the male die through the stamping hole, and the male die is connected with the upper die holder through a screw; and a female die corresponding to the male die is arranged on one side of the male die, the ejector plate is arranged below the male die and the female die, the positioning mechanism is arranged on the female die, and the rectangular spring is arranged below the ejector plate and connected with the ejector plate through a screw.

The electronic ceramic piece is subjected to arc bending deformation under the action of external force, the total bending deformation comprises a plastic deformation part and an elastic deformation part, when the external force is removed, the internal stress generated in the forming process of the electronic ceramic piece is released, the elastic deformation part is recovered, the shape of the formed piece is changed, and the change process of the shape of the formed piece is called springback. The springback is the most important defect influencing the arc size precision of the electronic ceramic chip. According to the basic principle of the springback, the springback is an inevitable problem in the cold stamping forming process and can be controlled only by taking some measures.

The die has the working principle that an electronic ceramic piece (blank) is placed on a female die and is well positioned by a positioning mechanism, a male die is arranged below a stamping mechanism, the male die is pressed downwards by the stamping mechanism, the male die is contacted with the electronic ceramic piece (blank) and gradually pressed downwards, at the moment, the pressure received by the electronic ceramic piece (blank) generates deformation, the bending radius of the electronic ceramic piece (blank) is gradually reduced along with the continuous downward movement of the male die, the shapes of 2-direction arc grooves are corrected until a top plate and a lower die seat are contacted by the stamping mechanism, the electronic ceramic piece is tightly pressed between the male die and the female die, the internal bending radius of the electronic ceramic piece is matched with the bending radius of the female die, the electronic ceramic piece is bent into a required shape, and the resilience of an electronic ceramic piece is controlled. And then, the stamping mechanism is restored, the male die rises, the rectangular spring acts on the ejector plate to eject the bent electronic ceramic piece out of the female die, and at the moment, the arc forming of the electronic ceramic piece is completed.

Furthermore, the arc forming die for the electronic ceramic chip comprises a press machine, a press head and a spring, wherein the press machine is connected with the press head, and the spring is sleeved on the press head.

The spring is sleeved on the stamping head and is pressed downwards to press the material into an arc shape, and then the material is restored to the original shape through the spring.

Furthermore, the arc-shaped forming die for the electronic ceramic chip further comprises a guide pillar and a guide sleeve, wherein the upper end and the lower end of the guide sleeve are respectively connected with the lower end of the upper die base and the upper end of the guide pillar, and the lower end of the guide pillar is connected with the lower die base.

The guide post and the guide sleeve are used for forming a guide device of the arc-shaped forming die for the electronic ceramic chip to solve the problem of involution of the male die and the female die.

Further, the convex die comprises a convex die insert, a convex die fixing seat, a convex die fixing plate and a reverse side block, wherein the convex die insert, the convex die fixing seat, the concave die fixing plate and the reverse side block are fixed together through screws; the lower die holder further comprises a leaning block, and the leaning block is arranged below the male die and the female die.

In order to ensure the precision requirement of the product and facilitate the maintenance and quick replacement of the die parts, the male die and the female die both adopt an insert structure. The male die insert, the male die fixing seat, the male die insert, the male die fixing plate and the reverse side block are positioned through the rabbets and connected through the screws, the processing cost of precious metal materials is saved, the assembly mode is favorable for maintenance and disassembly, the plug ruler can be added for adjustment after the working face is worn, and the service life of the die is prolonged.

Furthermore, the concave die comprises a concave die insert and a concave die fixing plate, and the concave die insert and the concave die fixing plate are connected.

Further, foretell an arc forming die for electron potsherd, positioning mechanism is including location movable block, locating plate, locating pin, the locating plate passes through the screw setting and is in electron potsherd position top is placed to the die, location movable block, locating pin setting are in electron potsherd position one side is placed to the die.

In order to facilitate the positioning adjustment of the parts, a positioning movable block structure is adopted. Through the cooperation of the positioning movable block, the positioning plate and the positioning pin, the electronic ceramic piece (blank) can be quickly positioned, and the product precision is improved.

Furthermore, in the arc-shaped forming die for the electronic ceramic chip, the convex die insert is inclined upwards by 2 degrees towards one side of the concave die in the opposite direction

In order to prevent the rebound of the part, the ejector plate is adopted for correction, and the convex mold insert is inclined by 2 degrees to effectively control the rebound.

Further, in the arc-shaped forming die for the electronic ceramic chip, engine oil is used as a lubricant between the male die and the female die.

The machine oil is used as a lubricant, the rebound quantity generated after forming is minimum, and the machine oil is selected as the lubricant in actual production in order to ensure the arc size precision. And moreover, the draw bead is added at the arc-shaped bent part of the electronic ceramic piece, so that the electronic ceramic piece can be fully deformed during forming, and the resilience difficulty of the electronic ceramic piece is increased.

Further, in the arc-shaped forming die for the electronic ceramic chip, the clearance between the male die and the female die is 1.0 t.

The reasonable selection of the die clearance plays a crucial role in ensuring the quality of the stamping parts, the stamping parts with small die clearances are easy to break, and the stamping parts with large die clearances can have serious rebound and offset. Along with the increase of the clearance between the male die and the female die, the thickness strain of the processed electronic ceramic sheet material is gradually reduced, the resilience amount is gradually increased, the influence trend of the thickness strain and the resilience amount is opposite, in order to ensure the arc-shaped size precision of the electronic ceramic sheet, the resilience after forming is considered firstly, the occurrence of fracture defects is avoided, and the 1.0t is selected as the most appropriate clearance of the die.

Furthermore, the forming mechanism further comprises an unloading screw, the upper end of the unloading screw is fixedly arranged at one end, facing the direction of the female die, of the ejector plate through a screw, and the lower end of the unloading screw penetrates through the lower die base and moves up and down on the lower die base.

The utility model has the advantages that:

(1) the structure is simple, the installation and debugging are convenient, the operation elasticity of the system is large, the precision is high, in order to prevent the rebound of the part, the ejector plate is adopted for correction, the convex die is inclined by 2 degrees to effectively control the rebound, and engine oil is adopted between the convex die and the concave die as a lubricant, so that the problem of the rebound is greatly reduced;

(2) the male die and the female die are both in insert structures, so that the processing cost of precious metal materials is saved, the assembly mode is favorable for maintenance and disassembly, and a stoppering ruler can be added for adjustment after the working surface is worn, so that the service life of the die is prolonged;

(3) in order to facilitate the positioning adjustment of the parts, a positioning movable block structure is adopted. Through the cooperation of the positioning movable block, the positioning plate and the positioning pin, the electronic ceramic piece (blank) can be quickly positioned, and the product precision is improved.

Drawings

Fig. 1 is a schematic view of an overall structure of an arc-shaped forming die for an electronic ceramic wafer according to the present invention;

fig. 2 is an internal schematic view of a forming mechanism of an arc-shaped forming die for an electronic ceramic wafer according to the present invention;

fig. 3 is an oblique schematic view of a convex mold insert of an arc-shaped forming mold for an electronic ceramic wafer according to the present invention;

in the figure: the stamping mechanism 1, the press machine 11, the stamping head 12, the spring 13, the forming mechanism 2, the male die 21, the male die insert 211, the male die fixing seat 212, the male die fixing plate 213, the reverse side block 214, the female die 22, the female die insert 221, the female die fixing plate 222, the positioning mechanism 23, the positioning movable block 231, the positioning plate 232, the positioning pin 233, the upper die holder 24, the stamping hole 241, the lower die holder 25, the backup block 251, the ejector plate 26, the rectangular spring 27, the guide post 28, the guide sleeve 29, the discharge screw 30, the base 3, the large screw 31, the a screw and the pin.

Detailed Description

The present invention will be further elucidated with reference to the accompanying drawings 1 to 3 and examples.

The arc-shaped forming die for the electronic ceramic plate with the structure as shown in fig. 1 and 2 comprises a stamping mechanism 1, a forming mechanism 2 and a base 3, wherein the stamping mechanism 1 is arranged on the forming mechanism 2, and the forming mechanism 2 is arranged on the base 3 through a large screw 31; the forming mechanism 2 comprises a male die 21, a female die 22, a positioning mechanism 23, an upper die holder 24, a lower die holder 25, a material ejecting plate 26 and a rectangular spring 27, wherein the upper die holder 24 is provided with a punching hole 241 penetrating through the upper die holder 24, the lower end of the punching mechanism 1 is connected with the male die 21 through the punching hole 241, and the male die 21 is connected with the upper die holder 24 through a screw; a female die 22 corresponding to the male die 21 is arranged on one side of the male die 21, the ejector plate 26 is arranged below the male die 21 and the female die 22, the positioning mechanism 23 is arranged on the female die 22, and the rectangular spring 27 is arranged below the ejector plate 26 and connected with the ejector plate through a screw.

Further, as shown in fig. 1, the stamping mechanism 1 includes a press 11, a stamping head 12, and a spring 13, wherein the press 11 is connected with the stamping head 12, and the spring 13 is sleeved on the stamping head 12.

As shown in fig. 2, the forming mechanism 2 further includes a guide post 28 and a guide sleeve 29, wherein the upper end and the lower end of the guide sleeve 29 are respectively connected to the lower end of the upper die holder 24 and the upper end of the guide post 28, and the lower end of the guide post 28 is connected to the lower die holder 25.

In addition, as shown in fig. 2, the male die 21 includes a male die insert 211, a male die holder 212, a male die holder 213, and a reverse side block 214, and the male die insert 211, the male die holder 212, the female die holder 213, and the reverse side block 214 are fixed together by screws; the lower die holder 25 further comprises a leaning block 251, and the leaning block 251 is arranged below the male die 21 and the female die 22; the female die 22 comprises a female die insert 221 and a female die fixing plate 222, and the female die insert 221 and the female die fixing plate 222 are connected.

In addition, positioning mechanism 23 is including location movable block 231, locating plate 232, locating pin 233, locating plate 232 passes through the screw setting and is in the electronic ceramic piece position top is placed to die 22, location movable block 231, locating pin 233 set up the die 22 places the one side of electronic ceramic piece position.

Further, as shown in fig. 3, the male mold insert 211 is inclined upward by 2 ° toward the opposite side of the female mold 22. Engine oil is used as a lubricant between the male die 21 and the female die 22. The clearance between the male die 21 and the female die 22 is 1.0 t.

In addition, the forming mechanism 2 further comprises a discharging screw 30, the upper end of the discharging screw 30 is fixedly arranged at one end of the ejector plate 26 facing the direction of the female die 22 through a screw, and the lower end of the discharging screw 30 penetrates through the lower die holder 25 and moves up and down on the lower die holder 25.

Examples

The electronic ceramic sheet (blank) is placed on the female die 22, the electronic ceramic sheet (blank) can be rapidly positioned through the matching of the positioning movable block 231, the positioning plate 232 and the positioning pin 233 of the positioning mechanism 23, the male die 21 is installed below the stamping mechanism 1, the press machine 11 of the stamping mechanism 1 drives the stamping head 12 to press down the male die 21, the male die 21 presses down, the male die 21 contacts the electronic ceramic sheet (blank) and gradually presses down, at the moment, the pressure received by the electronic ceramic sheet (blank) is deformed, the bending radius of the electronic ceramic sheet (blank) is gradually reduced along with the continuous downward movement of the male die 21, until the stamping head 12 drives the male die 21 to descend until the ejector plate 26 and the lower die holder 25 are contacted, the shapes of the 2-direction arc grooves are corrected, the guide post 28 and the guide sleeve 29 are used for forming the guide device of the arc forming die for the electronic ceramic sheet, so as to ensure the involution problem of, the electronic ceramic chip is tightly pressed between the convex-concave die, the bending radius of the electronic ceramic chip is matched with that of the concave die, the electronic ceramic chip is bent into a required shape, and the resilience of a formed piece of the electronic ceramic chip is controlled. After that, the press machine 11 is stopped, the punching mechanism 1 is restored by the spring 13, the male die 21 is raised, the rectangular spring 27 and the discharging screw 30 act on the ejector plate 26 to eject the bent electronic ceramic sheet from the female die 22, and at this time, the arc forming of the electronic ceramic sheet is completed.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, any combination between the embodiments of the present invention can be made, and the same shall be considered as the disclosure of the present invention as long as it does not violate the idea of the present invention.

Claims

1. The arc-shaped forming die for the electronic ceramic chip is characterized by comprising a stamping mechanism (1), a forming mechanism (2) and a base (3), wherein the stamping mechanism (1) is arranged on the forming mechanism (2), and the forming mechanism (2) is arranged on the base (3) through a large screw (31); the forming mechanism (2) comprises a male die (21), a female die (22), a positioning mechanism (23), an upper die base (24), a lower die base (25), a material ejecting plate (26) and a rectangular spring (27), wherein the upper die base (24) is provided with a punching hole (241) penetrating through the upper die base (24), the lower end of the punching mechanism (1) is connected with the male die (21) through the punching hole (241), and the male die (21) is connected with the upper die base (24) through a pin; a female die (22) corresponding to the male die (21) is arranged on one side of the male die (21), the ejector plate (26) is arranged below the male die (21) and the female die (22), the positioning mechanism (23) is arranged on the female die (22), and the rectangular spring (27) is arranged below the ejector plate (26) and connected with the ejector plate through a screw.

2. The arc forming die for the electronic ceramic plates as claimed in claim 1, wherein the stamping mechanism (1) comprises a press (11), a stamping head (12) and a spring (13), the press (11) is connected with the stamping head (12), and the spring (13) is sleeved on the stamping head (12).

3. The arc forming die for the electronic ceramic sheets as claimed in claim 1, wherein the forming mechanism (2) further comprises a guide pillar (28) and a guide sleeve (29), the upper end and the lower end of the guide sleeve (29) are respectively connected with the lower end of the upper die holder (24) and the upper end of the guide pillar (28), and the lower end of the guide pillar (28) is connected with the lower die holder (25).

4. The arc forming die for the electronic ceramic sheet as claimed in claim 1, wherein the punch (21) comprises a punch insert (211), a punch holder (212), a punch holder (213) and an opposite side block (214), and the punch insert (211), the punch holder (212), the punch holder (213) and the opposite side block (214) are fixed together by screws; the lower die holder (25) further comprises a leaning block (251), and the leaning block (251) is arranged below the male die (21) and the female die (22).

5. The arc forming die for the electronic ceramic sheet according to claim 1, wherein the die (22) comprises a die insert (221) and a die fixing plate (222), and the die insert (221) and the die fixing plate (222) are connected.

6. The arc forming die for the electronic ceramic plate according to claim 1, wherein the positioning mechanism (23) comprises a positioning movable block (231), a positioning plate (232) and a positioning pin (233), the positioning plate (232) is disposed above the position of the concave die (22) for placing the electronic ceramic plate through a screw, and the positioning movable block (231) and the positioning pin (233) are disposed on one side of the concave die (22) for placing the electronic ceramic plate.

7. The arc forming die for the electronic ceramic sheet according to claim 4, wherein the punch insert (211) is inclined upward by 2 ° toward a side opposite to the female die (22); engine oil is used as a lubricant between the male die (21) and the female die (22).

8. The arc forming die for the electronic ceramic sheets as claimed in claim 1, wherein the gap between the male die (21) and the female die (22) is 1.0 t.

9. The arc forming die for the electronic ceramic sheets as claimed in claim 1, wherein the forming mechanism (2) further comprises a discharging screw (30), the upper end of the discharging screw (30) is fixedly arranged at one end of the ejector plate (26) facing the direction of the female die (22) through a screw, and the lower end of the discharging screw (30) penetrates through the lower die holder (25) and moves up and down on the lower die holder (25).