CN213006742U - Sintered graphite die for drill bit tool bit - Google Patents

Abstract

The utility model discloses a drill bit tool bit sintering graphite mould, concretely relates to graphite mould field, including two sideboard, two end plates and an intermediate bottom, two sideboard and two end plates end to end enclose into the rectangle framework, intermediate bottom set up in the inboard middle part of rectangle frame form and with sideboard parallel arrangement, equally divide into two clamp plates with the inboard cavity that surrounds of rectangle framework and place the storehouse, every the clamp plate is placed inside a plurality of concave surface moulds, convex surface mould, lower pressure head and the last pressure head of all having placed in storehouse, and is a plurality of concave surface mould and convex surface mould interval setting in turn. The utility model discloses a set up concave surface mould and convex surface mould, change the mode of arranging of tool bit unburned bricks, in graphite jig's equal area, compare the mode of arranging among the prior art, the utility model discloses can improve concave surface mould's thickness, and convex surface mould is higher because its curved surface to the outside is bellied, intensity, has consequently prolonged the life of mould, and can process more tool bits.

Description

Sintered graphite die for drill bit tool bit

Technical Field

The embodiment of the utility model provides a graphite jig field, concretely relates to drill bit tool bit sintering graphite mould.

Background

In the existing graphite mold manufacturing, a common fan-shaped mold adopts a diamond tool bit side pressure mode, the radian of the fan-shaped mold is controlled by an upper pressure head and a lower pressure head, the angle of the fan is controlled by a side plate and a middle plate, the whole graphite mold basically forms a square shape by a plurality of graphite blocks, the manufacturing process is simple, the processing is easy, when the graphite mold is manufactured, the whole graphite mold is placed into a steel mold, a tool bit green body is placed in a mold cavity, the upper pressure head is installed, the hot press can be adopted for high-temperature pressing, and a formed tool bit is obtained after demolding.

But among the current fan-shaped tool bit mould, fixed tool bit unburned bricks be the pressure head of position about the tool bit unburned bricks and the intermediate lamella of both sides around with, because fan-shaped tool bit's arc shape, consequently, the cross-section of intermediate lamella also sets up to the arc, for more produce more tool bits in equal area, more utilize graphite jig's space, the die cavity that forms between the ordinary intermediate lamella all is along a direction evenly distributed, and the thickness of intermediate lamella is thinner, be concave surface structure, consequently, receive the easy damage of pressure when hot briquetting, difficult installation and dismantlement, the easy fracture that takes place when high temperature process.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a drill bit tool bit sintering graphite jig through setting up concave surface mould and convex surface mould, changes the mode of arranging of tool bit unburned bricks, in graphite jig's equal area, compares the mode of arranging among the prior art, the utility model discloses can improve concave surface mould's thickness, and convex surface mould because its curved surface to the outside is bellied, intensity is higher, has consequently prolonged the life of mould, and can process more tool bits to solve the problem that exists among the background art.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a graphite sintering mold for a drill bit tool bit comprises two side plates, two end plates and a middle partition plate, wherein the two side plates and the two end plates are connected end to form a rectangular frame body, the middle partition plate is arranged in the middle of the inner side of the rectangular frame body and parallel to the side plates, a cavity body surrounded by the inner side of the rectangular frame body is averagely divided into two pressing plate placing bins, a plurality of concave molds, convex molds, a lower pressing head and an upper pressing head are placed in each pressing plate placing bin, the concave molds and the convex molds are alternately arranged at intervals, a mold cavity is formed between each concave mold and each convex mold, and the mold cavity formed between each convex mold and two concave molds on two adjacent sides of each convex mold is symmetrically arranged about the transverse center line of each convex;

a lower pressure head and an upper pressure head are movably arranged in each die cavity, and a tool bit green body is placed between the upper pressure head and the lower pressure head;

the middle partition plate comprises an upper partition plate and a lower partition plate, the upper partition plate is arranged above the lower partition plate and fixedly connected with the upper pressure heads on two sides, limiting guide rods are fixedly arranged on two sides of the bottom of the upper partition plate, limiting guide grooves are formed in two sides of the upper surface of the lower partition plate, and the limiting guide rods are matched with the limiting guide grooves.

Further, the cross section of the drill bit tool bit is set to be fan-shaped, the front side face and the rear side face of the concave surface die are matched with the outer arc surface of the drill bit tool bit respectively, the front side face and the rear side face of the convex surface die are matched with the inner arc surface of the drill bit tool bit respectively, and a side wall, close to the end plate, of the concave surface die and the end plate are attached to each other is set to.

Furthermore, the longitudinal section of the drill bit is fan-shaped, the lower end face of the upper pressure head is matched with the upper surface of the drill bit, and the upper end face of the lower pressure head is matched with the lower surface of the drill bit.

Furthermore, the limiting guide rod is cylindrical, and the bottom end of the limiting guide rod is in a round table shape.

Further, be equipped with the wearing and tearing instruction wireframe on the sideboard inside wall that concave surface mould and convex surface mould correspond, wearing and tearing instruction wireframe is the same with concave surface mould and convex surface mould's lateral wall shape, size and position homogeneous phase, the wearing and tearing instruction wireframe forms through the sculpture.

Furthermore, an intermediate pressure head can be arranged between the lower pressure head and the upper pressure head in each die cavity, the lower end face of the lower pressure head and the upper end face of the upper pressure head are arranged to be planes, the upper end face of the lower pressure head and the lower end face of the upper pressure head are respectively matched with the upper surface of the drill bit, and the upper end face and the lower end face of the intermediate pressure head are respectively matched with the lower surface of the drill bit.

Furthermore, the intermediate bottom plate further comprises an intermediate bottom plate, the intermediate bottom plate is arranged between the upper bottom plate and the intermediate bottom plate, the intermediate bottom plate is fixedly connected with the intermediate pressure head, telescopic rods are fixedly arranged on two sides of the bottom of the upper bottom plate and two sides of the bottom of the intermediate bottom plate respectively, and limiting holes matched with the telescopic rods are formed in two sides of the upper surface of the intermediate bottom plate and two sides of the upper surface of the lower bottom plate respectively.

The embodiment of the utility model provides a have following advantage:

1. the utility model changes the arrangement mode of the tool bit green body by arranging the concave surface die and the convex surface die, and compared with the arrangement mode in the prior art in the same area of the graphite die, the utility model can improve the thickness of the concave surface die, and the convex surface die has higher strength because of the curved surface which is convex towards the outside, thereby prolonging the service life of the die and being capable of processing more tool bits;

2. the utility model divides the intermediate baffle into two parts, the upper baffle is fixedly connected with the upper pressure head, and the bottom end is matched with the limit guide groove on the lower baffle through the limit guide rod, so that the upper pressure head can be quickly and accurately inserted into the mold cavity, and can not be mutually worn with the peripheral mold, thereby saving time and labor, greatly prolonging the service life of the mold, and improving the assembly and disassembly efficiency of the mold; in addition, when the tool bit is subjected to hot press molding, the accuracy and the stability of the whole die can be improved;

3. the wear indication line frames are arranged on the inner side walls of the side plates corresponding to the concave surface die and the convex surface die, so that whether the dies are matched or not can be checked when the graphite die is assembled, whether the edges of the small dies are damaged or worn can be detected, the worn dies can be replaced in time, and the rejection rate is greatly reduced;

4. through set up middle pressure head between pressure head and the last pressure head down, prepare two-layer tool bit, and the tool bit sets up about middle pressure head symmetry, can increase pressure head thickness and intensity, avoids breaking occur when the hot pressing, increase of service life, and under the condition that does not change original pressure head thickness, can also select the thickness that reduces whole graphite jig, reduction graphite jig material cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of an installation structure provided in embodiment 1 of the present invention;

fig. 2 is a schematic view of an upper partition structure provided in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a middle partition provided in embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a wear indication wire frame provided in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a graphite mold according to the embodiment of the present invention in comparison with the prior art;

fig. 6 is a longitudinal sectional view of a pressure head provided in embodiment 2 of the present invention;

in the figure: 1 sideboard, 2 end plates, 3 intermediate clapboards, 31 upper clapboards, 32 lower clapboards, 33 limiting guide rods, 34 limiting guide grooves, 35 middle clapboards, 36 telescopic rods, 37 limiting holes, 4 pressing plate placing bins, 5 concave molds, 6 convex molds, 7 lower pressing heads, 8 upper pressing heads, 9 mold cavities, 10 tool bit green bodies, 11 abrasion indicating wire frames and 12 intermediate pressing heads.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to the attached drawings 1-4 of the specification, the drill bit and tool bit sintered graphite mold of the embodiment comprises two side plates 1, two end plates 2 and a middle partition plate 3, wherein the two side plates 1 and the two end plates 2 are connected end to form a rectangular frame body, the middle baffle 3 is arranged in the middle of the inner side of the rectangular frame and is parallel to the side plate 1, the cavity surrounded by the inner side of the rectangular frame is averagely divided into two pressure plate placing bins 4, a plurality of concave molds 5, convex molds 6, lower pressure heads 7 and upper pressure heads 8 are placed in each pressure plate placing bin 4, the plurality of concave molds 5 and the convex molds 6 are alternately arranged at intervals, a cavity 9 is formed between the concave molds 5 and the convex molds 6, and the cavity 9 formed between each convex mold 6 and two concave molds 5 on two adjacent sides of the convex mold 6 is symmetrically arranged relative to the transverse central line of the convex mold 6;

a lower pressure head 7 and an upper pressure head 8 are movably arranged in each die cavity 9, and a tool bit green body 10 is arranged between the upper pressure head 8 and the lower pressure head 7;

the middle partition plate 3 comprises an upper partition plate 31 and a lower partition plate 32, the upper partition plate 31 is arranged above the lower partition plate 32 and is fixedly connected with the upper pressure heads 8 on two sides, limiting guide rods 33 are fixedly arranged on two sides of the bottom of the upper partition plate 31, limiting guide grooves 34 are formed in two sides of the upper surface of the lower partition plate 32, and the limiting guide rods 33 are matched with the limiting guide grooves 34.

Further, this drill bit tool bit cross section sets up to fan-shaped, the front and back both sides face of concave surface mould 5 cooperatees with the drill bit tool bit extrados respectively, the front and back both sides face of convex surface mould 6 cooperatees with drill bit tool bit intrados respectively, and a lateral wall that concave surface mould 5 and end plate 2 laminating mutually that is close to end plate 2 sets up to the plane.

Furthermore, the longitudinal section of the drill bit is fan-shaped, the lower end face of the upper pressure head 8 is matched with the upper surface of the drill bit, and the upper end face of the lower pressure head 7 is matched with the lower surface of the drill bit.

Further, the limiting guide rod 33 is cylindrical, and the bottom end of the limiting guide rod is in a round table shape.

The implementation scenario is specifically as follows: the utility model discloses when using, can be with a sideboard 1 and end plate 2 in the steel mould, then place concave surface mould 5, convex surface mould 6, lower pressure head 7 and tool bit unburned bricks 10 in the clamp plate of one side is placed the storehouse 4, superpose in proper order and place the back, place each mould in the storehouse 4 again with the clamp plate of opposite side, then place remaining sideboard 1 and end plate 2, the die cavity 9 (see figure 5) of multiunit symmetry has been formed to whole mould top this moment, in the equal area of graphite jig, compare the mode of arranging among the prior art, the utility model discloses can improve the thickness of concave surface mould 5, and convex surface mould 6 is because its convex curved surface to the outside, intensity is higher, has consequently prolonged the life of mould, and can process more tool bits;

finally, the limiting guide rod 33 at the bottom of the upper partition plate 31 is aligned to and inserted into the limiting guide groove 34 on the lower partition plate 32, and at the moment, when the upper partition plate 31 is placed downwards, the upper partition plate is positioned by the limiting guide rod 33 and the limiting guide groove 34, so that the upper pressing heads 8 fixed on two sides of the upper partition plate 31 can be accurately inserted into the die cavity 9 above the cutter head green body 10, and the upper pressing heads 8, the concave dies 5 and the convex dies 6 on the front side and the rear side of the upper pressing heads and the side plate 1 on one side of the upper pressing heads cannot be mutually worn; in addition, when the die presses the upper pressing head 8 through the hot press to form the tool bit, the accuracy and the stability of the whole die can be improved through the arrangement of the limiting guide rod 33.

Referring to the attached figure 4 of the specification, a wear indication wire frame 11 is arranged on the inner side wall of the side plate 1 corresponding to the concave surface die 5 and the convex surface die 6, the wear indication wire frame 11 is identical to the side wall of the concave surface die 5 and the side wall of the convex surface die 6 in shape, size and position, and the wear indication wire frame 11 is formed by carving.

The implementation scenario is specifically as follows: the utility model discloses a set up wearing and tearing instruction wireframe 11 on 1 inside wall of sideboard that concave surface mould 5 and convex surface mould 6 correspond, just so can in time discover when equipment whole graphite jig whether each mould that uses is the tool bit kind of processing in the mould general mill of the required tool bit of processing a lot, then its graphite jig that corresponds is just so many, and every graphite jig all comprises each little mould, consequently the condition of putting wrong between the mould is likely to appear, and can detect out whether each little mould edge damages or wearing and tearing, the tool bit size that leads to processing because of wearing and tearing etc. changes after having solved mould repetitious usage, the difficult discovery of naked eye, cause the problem of rejection rate increase.

Example 2

Referring to the attached figure 6 of the specification, an intermediate pressure head 12 can be further arranged between the lower pressure head 7 and the upper pressure head 8 in each die cavity 9, the lower end face of the lower pressure head 7 and the upper end face of the upper pressure head 8 are arranged to be flat, the upper end face of the lower pressure head 7 and the lower end face of the upper pressure head 8 are respectively matched with the upper surface of a drill bit, and the upper end face and the lower end face of the intermediate pressure head 12 are respectively matched with the lower surface of the drill bit.

Further, the middle partition board 3 further comprises a middle partition board 35, the middle partition board 35 is arranged between the upper partition board 31 and the middle partition board 35, the middle partition board 35 is fixedly connected with the middle pressure head 12, the two sides of the bottom of the upper partition board 31 and the two sides of the bottom of the middle partition board 35 are respectively and fixedly provided with an expansion link 36, and the two sides of the upper surface of the middle partition board 35 and the two sides of the upper surface of the lower partition board 32 are respectively provided with a limit hole 37 matched with the expansion.

The implementation scenario is specifically as follows: the utility model discloses can adopt middle pressure head 12 to cooperate with lower pressure head 7 and last pressure head 8 in every die cavity 9, realize the processing of two-layer tool bit, and when the installation, after one deck tool bit unburned bricks 10 etc. of bottom are assembled, can realize the accurate quick installation of middle pressure head 12 through the telescopic link 36 and the cooperation of spacing hole 37 of median septum 35 bottom, then place tool bit unburned bricks 10 again, the same is said, last upper pressure head 8 that drives both sides through last baffle 31 suppresses tool bit unburned bricks 10, the setting of telescopic link 36 can realize when it pegs graft with spacing hole 37, middle pressure head 12 and upper pressure head 8 do not contact with each mould of below, thereby can not take place wearing and tearing when moving down after spacing;

because the upper and lower surface of tool bit also generally is the arc, consequently when wanting to reduce graphite jig's whole thickness, the thickness attenuation of pressure head is required, just so also leads to the cracked condition of pressure head that takes place easily when hot pressing production, consequently the utility model discloses also be the method of adopting middle pressure head 12 production upper and lower two symmetrical blades, can select not to change graphite jig whole thickness, the method of the thickness of increase pressure head improves life, also can select to reduce graphite jig whole thickness, the method that does not increase pressure head thickness reduces graphite jig material cost.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (7)

1. The utility model provides a drill bit tool bit sintering graphite mould, includes two sideboard (1), two end plates (2) and a intermediate bottom (3), two sideboard (1) and two end plates (2) end to end enclose into the rectangle framework, intermediate bottom (3) set up in the inboard middle part of rectangle frame form and with sideboard (1) parallel arrangement, the chamber that surrounds the rectangle framework inboard evenly falls into two clamp plates and places storehouse (4), its characterized in that: a plurality of concave molds (5), convex molds (6), a lower pressure head (7) and an upper pressure head (8) are placed inside each pressing plate placing bin (4), the concave molds (5) and the convex molds (6) are alternately arranged at intervals, a mold cavity (9) is formed between each concave mold (5) and each convex mold (6), and the mold cavities (9) formed between each convex mold (6) and two concave molds (5) on two adjacent sides of each convex mold (6) are symmetrically arranged about the transverse central line of each convex mold (6);

a lower pressure head (7) and an upper pressure head (8) are movably arranged in each die cavity (9), and a tool bit green body (10) is arranged between the upper pressure head (8) and the lower pressure head (7);

intermediate bottom (3) include baffle (31) and lower baffle (32), go up baffle (31) and set up in baffle (32) top down, and with last pressure head (8) fixed connection of both sides, go up fixed spacing guide arm (33) that is equipped with in baffle (31) bottom both sides, spacing guide way (34) have been seted up to baffle (32) upper surface both sides down, spacing guide arm (33) cooperate with spacing guide way (34).

2. The drill bit sintered graphite mold of claim 1, wherein: the cross section of the drill bit is set to be fan-shaped, the front side face and the rear side face of the concave surface die (5) are matched with the outer arc surface of the drill bit respectively, the front side face and the rear side face of the convex surface die (6) are matched with the inner arc surface of the drill bit respectively, and a side wall, close to the concave surface die (5) of the end plate (2), of the end plate (2) and attached to the end plate (2) is set to be.

3. The drill bit sintered graphite mold of claim 1, wherein: the longitudinal section of the drill bit is fan-shaped, the lower end face of the upper pressure head (8) is matched with the upper surface of the drill bit, and the upper end face of the lower pressure head (7) is matched with the lower surface of the drill bit.

4. The drill bit sintered graphite mold of claim 1, wherein: the limiting guide rod (33) is cylindrical, and the bottom end of the limiting guide rod is in a round table shape.

5. The drill bit sintered graphite mold of claim 1, wherein: be equipped with wear indication wireframe (11) on sideboard (1) inside wall that concave surface mould (5) and convex surface mould (6) correspond, wear indication wireframe (11) are the same with concave surface mould (5) and convex surface mould (6) lateral wall shape, size and position, wear indication wireframe (11) form through the sculpture.

6. The drill bit sintered graphite mold of claim 1, wherein: an intermediate pressure head (12) can be further arranged between the lower pressure head (7) and the upper pressure head (8) in each die cavity (9), the lower end face of the lower pressure head (7) and the upper end face of the upper pressure head (8) are arranged to be flat surfaces, the upper end face of the lower pressure head (7) and the lower end face of the upper pressure head (8) are matched with the upper surface of a drill bit respectively, and the upper end face and the lower end face of the intermediate pressure head (12) are matched with the lower surface of the drill bit respectively.

7. The drill bit sintered graphite mold of claim 6, wherein: the middle partition plate (3) further comprises a middle partition plate (35), the middle partition plate (35) is arranged between the upper partition plate (31) and the middle partition plate (35), the middle partition plate (35) is fixedly connected with the middle pressure head (12), telescopic rods (36) are fixedly arranged on two sides of the bottom of the upper partition plate (31) and the two sides of the bottom of the middle partition plate (35) respectively, and limiting holes (37) matched with the telescopic rods (36) are formed in two sides of the upper surface of the middle partition plate (35) and the two sides of the upper surface of the lower partition plate (32) respectively.

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