CN218693869U

CN218693869U - Mould for cold pressing of PCBN (printed circuit board network) integral sheet material cup

Info

Publication number: CN218693869U
Application number: CN202222817608.6U
Authority: CN
Inventors: 刘慧苹; 耿菖健; 吕自强; 方海江
Original assignee: SF Diamond Co Ltd
Current assignee: SF Diamond Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-24
Anticipated expiration: 2032-10-25

Abstract

The utility model belongs to the technical field of the cold press forming die, especially, relate to a whole sheet stock cup of PCBN mould for colding pressing. The mould for cold pressing of the PCBN integral sheet material cup comprises a mould sleeve, wherein a mould hole used for containing a pressing block and a cushion block is formed in the mould sleeve, the mould hole is divided into an upper mould hole matched with the pressing block and a lower mould hole matched with the cushion block, the upper mould hole is used for placing a to-be-pressed material cup filled with powder, and the inner diameter of the lower mould hole is larger than that of the upper mould hole and the lower end face of the upper mould hole is positioned in the upper end face of the lower mould hole. After the pressing is finished, the cushion block is only needed to be taken out, and the pressing block is tapped to realize the demoulding, so that the demoulding process is further simplified.

Description

Mould for cold pressing of PCBN (printed circuit board network) integral sheet material cup

Technical Field

The utility model belongs to the technical field of the cold press forming die, especially, relate to a whole sheet stock cup of PCBN mould for colding pressing.

Background

CBN (cubic boron nitride) has hardness second to that of diamond, and PCBN (polycrystalline cubic boron nitride) can be formed by sintering a mixed powder of CBN fine powder and a binder at high temperature and high pressure, and has hardness, wear resistance, thermal stability and chemical stability higher than those of CBN, thus playing an important role in the application of ferrous metal materials.

Because the PCBN integral piece needs to be compacted after the powder is filled into the material cup in the high-temperature sintering process, the density of the powder is lower due to smaller pressure when the material cup is pressed by only using a manual press, and therefore the PCBN integral piece product is easy to crack and crack after the powder is sintered at high temperature and high pressure. If the powder in the material cup is compacted by a large-tonnage hydraulic press to increase the density of the powder and reduce or avoid quality defects, the size of the outer circle of the material cup needs to be kept at a set size. Therefore, the pressing die is required to ensure the product quality and control the product size.

The utility model discloses a chinese utility model patent that the bulletin number of authorizing is CN213564584U, and the bulletin date of authorizing is 2021 year 6 month 29 days discloses a composite mold is used in suppression of CBN cutter body mould, including base and sliding seat, the sliding seat is arranged in the base top, and its inside is provided with the movable mould, and the base up end still is provided with the fixed mould with the movable mould symmetry, sets up the mould section of thick bamboo in the tubular structure's that movable mould and fixed mould enclose inside, and it is provided with the compression leg to slide in the mould section of thick bamboo, still is provided with the inclined plane backup pad on the spout at the sliding seat back. The demoulding operation of the combined mould is complex, and the combined mould can be demoulded only after being disassembled, so that the demoulding operation is to be simplified.

The utility model discloses a chinese utility model patent that the bulletin number of authorizing is CN217194795U, and the bulletin date of authorizing is 2022 year 8 month 16 days discloses a PCBN blank forming die, including the die and with the dabber that the die cooperation was used, the template symmetry sets up, sets up fixed ear in its both sides, open along vertical direction on the template and have the shaping groove, adopt template composite structure. The smooth finish of the die cavity is improved, the phenomenon that the die cavity adheres to materials in the blank pressing process is reduced, and the product quality and the overall dimension are ensured. Because the core shaft is provided with the taper of 1 degree, the problem of difficult demoulding is solved, demoulding can be finished only by moving out the core shaft and then upwards ejecting materials when demoulding is needed after pressing, and if a cushion block exists, the cushion block below is taken out firstly, so that the demoulding operation of the mould is complex and needs to be further simplified.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PCBN whole piece material cup is cold-pressed and is used mould to solve the technical problem of inconvenient drawing of patterns after the product suppression among the prior art.

In order to realize the purpose, the utility model provides a PCBN whole sheet stock cup is the technical scheme of mould for colding pressing:

the die comprises a die sleeve, wherein a die hole is formed in the die sleeve and is divided into an upper die hole matched with a pressing block and a lower die hole matched with a cushion block, the upper die hole is used for placing a to-be-pressed material cup filled with powder, the inner diameter of the lower die hole is larger than that of the upper die hole, and the lower end face of the upper die hole is located in the upper end face of the lower die hole.

The beneficial effects are that: the utility model provides a PCBN whole piece material cup is colded pressing and is used mould improves on current mould, and the mould only includes the die sleeve and is used for cooperating the briquetting and the cushion of die sleeve, and the nib of die sleeve divide into nib and lower nib, and the structure is simpler, the operation installation of being convenient for. Wherein the last nib of die sleeve is used for placing the material cup of the powder of packing, and the internal diameter size in the lower nib of die sleeve is greater than the internal diameter size in last nib, and the lower terminal surface in last nib is in the up end in lower nib, consequently only makes the material cup whereabouts just can accomplish the drawing of patterns when the suppression is accomplished after need drawing of patterns, and the lower nib of material cup drawing of patterns whereabouts in-process die sleeve can not obstruct the material cup whereabouts, and the drawing of patterns is lighter simple and convenient more for the operating procedure of the drawing of patterns process of mould is further simplified.

As a further improvement, the height of the upper die hole is larger than that of the lower die hole.

The beneficial effects are that: the height of the upper die hole is larger than that of the lower die hole, so that when the die sleeve is placed on a workbench surface for demolding, the material cup falls to the workbench surface and then is completely demolded, and the rest part of the material cup is not left in the upper die hole.

As a further improvement, the external dimension of the pressing block is the same as that of the cup to be pressed.

The beneficial effects are that: the overall dimension of the pressing block is the same as that of the material cup to be pressed, the material powder in the material cup is compacted after the pressing block is pressed downwards, and meanwhile, the closed inner circumferential surface of the die hole in the die sleeve, the pressing block and the cushion block guarantee the external circle dimension of the material cup, so that the product quality and the product overall dimension after being pressed by the hydraulic press are guaranteed, and the problems of quality defects such as crack and cracking of products or unqualified overall dimension in subsequent sintering are avoided.

As a further improvement, the cushion block is divided into an upper cushion position and a lower cushion position, the peripheral surface of the upper cushion position is matched with the inner peripheral surface of the lower die hole, the height of the upper cushion position is larger than or equal to that of the lower die hole, and the radial size of the lower cushion position is not smaller than that of the inner peripheral surface of the lower die hole.

The beneficial effects are that: the cushion block is divided into an upper cushion position and a lower cushion position, wherein the upper cushion position is positioned in the lower die hole, the radial size of the lower cushion position is not smaller than that of the inner peripheral surface of the lower die hole, so that the lower cushion position is positioned outside the die sleeve, the lower cushion block is taken out by applying force on the lower cushion position of the lower cushion block during demolding conveniently, demolding steps are simplified, and demolding efficiency is improved. Go up the pad position outer peripheral face with the usable pad position of going up of the downthehole global adaptation of lower mould realizes that the cushion provides firm reliable plane support for material pressurized product, go up the high more than or equal to lower mould hole height of pad position, can guarantee that the downthehole pad position part that is full of the cushion of lower mould, avoid because of last pad position highly not enough, still leave the gap between last pad position up end and the lower mould hole up end when leading to terminal surface to support under the cushion under the die sleeve, it makes its appearance size change to extrude into the gap when leading to the material cup pressurized, the radial dimension of pad position under the cushion is great also be favorable to guaranteeing the holistic stability of pressing in-process mould.

As a further improvement, the lower cushion position extends outwards to the outer side of the die sleeve in the radial direction.

The beneficial effects are that: lower bolster position extends to the die sleeve outside outward, thereby can further make things convenient for the application of force to take out lower cushion on lower bolster position when the drawing of patterns, can make the cushion provide stable support as the base of mould simultaneously, further utilizes the cushion to provide when the suppression, avoids the die sleeve skew to influence the product suppression effect.

As a further improvement, the height of the upper cushion position is greater than that of the lower die hole.

The beneficial effects are that: go up the position of keeping up high more than or equal to lower die hole height can leave the gap between terminal surface under the die sleeve and the up end of the position of keeping up under the cushion, prevents that the cushion from being connected too closely with the die sleeve to easily take out the cushion when the drawing of patterns.

Drawings

FIG. 1 is a schematic structural view of an embodiment 1 of a cold-pressing mold for PCBN integral sheet material cups in the present invention;

description of reference numerals:

1. briquetting; 2. die sleeve; 3. cushion blocks; 21. mounting a die hole; 22. a lower die hole; 31. putting the cushion on the cushion; 32. and (7) a lower cushion position.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising a," 8230, "" etc. are not intended to exclude processes, methods, and the like, in which such elements are included.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model provides a PCBN whole sheet stock cup is cold-pressed and is used concrete embodiment 1 of mould:

as shown in fig. 1, the mould for cold pressing of the PCBN integral sheet material cup provided by the embodiment comprises a die sleeve 2, a die hole formed in the die sleeve 2 is divided into an upper die hole 21 and a lower die hole 22, the upper die hole 21 is used for placing a belt pressing material cup filled with powder, the overall dimension of the lower die hole 22 is larger than that of the upper die hole 21, the height of the lower die hole 22 is larger than that of the upper die hole 21, the structure is simpler, the lower die hole of the die sleeve cannot obstruct the falling of the material cup in the falling process of the material cup demoulding, the material cup can be conveniently demoulded completely, the demoulding is easier and simpler, and the operation steps of the demoulding process of the mould are further simplified.

In this embodiment, a pressing block 1 is arranged right above the die sleeve 2, the external dimension of the pressing block 1 is matched with the external dimension of the inner circumferential surface of the upper die hole 21 and is in clearance fit with the upper die hole 21, so that the pressing block 1 can be conveniently pressed into and taken out of the upper die hole 21, and the external dimensions of the pressing block 1 and the inner circumferential surface of the upper die hole 21 are consistent with the external dimension of the cup to be pressed, so as to ensure that the upper surface of the pressed product meets the requirement. A cushion block 3 is arranged right below the die sleeve 2, the cushion block 3 is matched with the inner peripheral surface of the lower die hole 22, so that the cushion block 3 provides a stable supporting plane for the material cup during pressing and the lower surface of the pressed material cup meets the requirements. Meanwhile, the inner peripheral surface of the die hole 21 on the die sleeve 2 ensures that the size of the outer circle of the material cup is qualified, and the powder in the material cup is compacted by a large-tonnage hydraulic press, so that the quality defects of cracks, cracking and the like of the sintered PCBN integral sheet product are prevented, and therefore the mould for cold pressing of the PCBN integral sheet material cup provided by the embodiment is utilized to ensure that the pressed product meets the quality requirement and the appearance size requirement.

In this embodiment, the cushion block 3 is further divided into an upper cushion position 31 and a lower cushion position 32, the upper cushion position 31 of the cushion block 3 is matched with the inner peripheral surface of the lower die hole 22, and the lower cushion position 32 of the cushion block 3 extends outward in the radial direction to the outside of the die sleeve 2, so that the cushion block 3 can be conveniently taken out by applying force on the lower cushion position 32 of the cushion block 3 during demolding, and demolding is more convenient. Further can make cushion 3 as the base of whole mould, when the position 31 provides the outrigger for the material cup on cushion 3, also utilize the lower position 32 of cushion 3 to provide the outrigger for die sleeve 2, avoid pressing in-process die sleeve 2 to take place the skew to influence the quality and the size of suppression product.

In this embodiment, the height of the upper pad 31 is greater than the height of the lower die hole 22, so that the lower die hole 22 is full of the cushion block 3, and the situation that the height of the upper pad 31 is insufficient, when the lower end face of the die sleeve 2 abuts against the lower pad 32 of the cushion block 3, a gap is still left between the upper end face of the upper pad 31 and the upper end face of the lower die hole 22, so that the material cup is extruded into the gap when being pressed to change the shape and size of the material cup, in addition, a gap can be left between the lower end face of the die sleeve 2 and the upper end face of the lower pad 32 of the cushion block 3, the situation that the die sleeve 2 is connected with the cushion block 3 to be too tight and not easy to separate is avoided, the cushion block 3 is convenient to take out after the pressing is completed, and the demoulding efficiency is improved.

When the die for cold pressing of the PCBN integral sheet material cup is used, preferably, the cushion block 3 is firstly placed on a working table of a hydraulic press, then the lower die hole 22 of the die sleeve 2 is buckled above the cushion block 3, then the material cup filled with powder in advance is placed in the upper die hole 21 of the die sleeve 2, the material cup is ensured to be flat, and finally the pressing block 1 is placed on the material cup. Ensuring that the edge of the pressing block 1 coincides with the edge of the material cup, keeping good contact between the pressing block 1 and the cushion block 3 and the material cup respectively, and finally starting a hydraulic press to press the pressing block 1 downwards by using certain pressure. After the powder in the material cup is pressed, the cushion block 3 is taken out during demoulding, and the powder and the material cup fall off together by tapping the press block 1 to complete demoulding.

The utility model provides a PCBN whole sheet stock cup is colded pressing and is used concrete embodiment 2 of mould:

the utility model discloses an in embodiment 1, PCBN whole piece material cup is divided into pad position 31 and lower pad position 32 with cushion 3 of mould for cold pressing. In this embodiment, the cushion block 3 is a single cushion block 3 consistent with the upper cushion position 31, the cushion block 3 is completely immersed in the die sleeve 2 during pressing, the die structure can be further compact, and the cushion block 3 and the material cup can be separated together by pushing the pressing block 1 from top to bottom during demolding.

The utility model provides a PCBN whole sheet stock cup is cold-pressed and is used concrete embodiment 3 of mould:

in embodiment 1 of the present invention, the radial dimension of the lower cushion 32 is greater than or equal to the radial dimension of the die case 2. In the embodiment, the radial dimension of the lower cushion position 32 is not less than the radial dimension of the inner circumferential surface of the lower die hole 22, and it can also be realized that the cushion block 3 and the lower cushion position 32 provide support for the die case 2 and force can be applied to the lower cushion position 32 to take out the lower cushion block.

The utility model provides a PCBN whole sheet stock cup is colded pressing and is used concrete embodiment 4 of mould:

in embodiment 1 of the present invention, the height of the upper pad 31 is greater than the height of the lower mold hole 22. In this embodiment, the height of the upper pad 31 is equal to the height of the lower die hole 22, so as to ensure that the lower die hole 22 is filled with the cushion block 3, thereby avoiding the situation that when the lower end surface of the die sleeve 2 abuts against the lower pad 32 of the cushion block 3 due to insufficient height of the upper pad 31, a gap is still left between the upper end surface of the upper pad 31 and the upper end surface of the lower die hole 22, so that the material cup is squeezed into the gap when being pressed, and the shape and size of the material cup are changed.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments may be modified without inventive effort, or some technical features may be substituted equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a whole sheet stock cup of PCBN mould for cold pressing, includes die sleeve (2), the nib has been seted up in die sleeve (2), characterized by, the nib divide into last nib (21) of matching briquetting (1) and lower nib (22) of matching cushion (3), go up nib (21) and be used for placing the material cup of waiting to press that is filled with the powder, the internal diameter size of nib (22) is greater than go up the internal diameter size of nib (21) down, the lower terminal surface of going up the nib be in the up end of nib down.

2. A PCBN monolith cup cold press die as claimed in claim 1, wherein the height of said upper die orifice (21) is greater than said lower die orifice (22).

3. The PCBN die set forth in claim 1, wherein the dimensions of the compact (1) are the same as the dimensions of the cup to be pressed.

4. A mold for cold pressing of PCBN unitary sheet cups as claimed in any one of claims 1-3, wherein said spacer (3) is divided into an upper pad (31) and a lower pad (32), the outer periphery of said upper pad (31) is fitted with the inner periphery of said lower die hole (22), the height of said upper pad (31) is greater than or equal to the height of said lower die hole (22), and the radial dimension of said lower pad (32) is not less than the radial dimension of the inner periphery of said lower die hole (22).

5. A mould for cold pressing of PCBN integral sheet material cups as in claim 4, wherein the lower pad (32) extends outwardly to the outside of the die case (2).

6. A die for cold pressing a PCBN integral piece cup as in claim 5, wherein the upper pad (31) is higher than the lower die hole (22).