CN210523817U - Middle mould belt core forming mould - Google Patents
Middle mould belt core forming mould Download PDFInfo
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- CN210523817U CN210523817U CN201921350036.7U CN201921350036U CN210523817U CN 210523817 U CN210523817 U CN 210523817U CN 201921350036 U CN201921350036 U CN 201921350036U CN 210523817 U CN210523817 U CN 210523817U
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Abstract
The utility model belongs to the technical field of dies, and particularly discloses a middle die belt core forming die, which comprises an upper punch (1), a middle die (2) and a lower punch (3), and is characterized in that the middle die is provided with an axial through hole (21); a mold core (22) is arranged in the axial through hole (21), the mold core (22) comprises a central axial mold core (221) and radial mold cores (222) symmetrically arranged on two sides of the central axial mold core (221), the end parts of the radial mold cores (222) are connected with the inner side wall of the axial through hole (21), and the central axial mold core (221) and the two radial mold cores (222) are located in the same plane; the axial through holes (21) on both sides of the core (22) form a first cavity and a second cavity (23, 24). The utility model discloses make a body structure and integrated on well mould with core and die cavity, the groove and the smooth no burr in shaft hole of stamping forming's product have improved the product machining precision.
Description
Technical Field
The utility model relates to a mould, concretely relates to well moulding strip core forming die belongs to mould technical field.
Background
The Chinese utility model patent with the publication number of CN 206869116U and publication date of 2018, 1 month and 12 days discloses a high-pressure-resistant powder metallurgy die with double lower punches and adjustable local fineness, which comprises an upper punch, a middle die, a lower outer punch, a lower inner punch and a lower core rod; the upper punch, the lower outer punch and the lower inner punch are provided with bases and punches; the middle die is provided with a double-layer cylindrical shell, a high-pressure-resistant die core and a discharging cavity; the lower core rod is provided with a rod body and a rod head; one end of the upper punch is inserted into the material discharging cavity from the upper part; one end of the lower outer punch is inserted into the material containing cavity from the lower part; one end of the lower inner punch penetrates through the lower outer punch and is inserted into the material containing cavity; and the lower core rod penetrates through the lower inner punch, the lower outer punch and the discharge cavity to be inserted into the upper punch. The die with the structure adopts two lower punches and a lower core rod, so that excessive gaps are caused between the lower core rod and the two lower punches, the product burrs are more, and the precision requirement cannot be met.
Therefore, a new mold is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a well mould area core forming die, the utility model discloses make an organic whole structure and integration with plug and die cavity on well mould, adopt the utility model discloses the smooth no burr in groove and the shaft hole of the product of stamping forming has improved the product machining precision.
The utility model aims at realizing the purpose through the following technical proposal, a middle mould belt core forming die comprises an upper punch, a middle mould and a lower punch, and is characterized in that an axial through hole is arranged on the middle mould, and the axial through hole of the middle mould is cylindrical; a mold core is arranged in the middle mold axial through hole, the mold core comprises a central axial mold core and radial mold cores symmetrically arranged on two sides of the central axial mold core, the end part of each radial mold core is connected with the inner side wall of the middle mold axial through hole, and the central axial mold core and the two radial mold cores are positioned in the same plane; the middle die axial through holes on two sides of the mold core form a first cavity and a second cavity.
Preferably, the lower punch is provided with a lower punch axial through hole; the lower punch comprises a first cylindrical part, a second cylindrical part, a first circular table part and a lower punch which are sequentially connected, the lower punch comprises a first lower punch and a second lower punch which are symmetrically arranged, the first lower punch and the second lower punch are positioned at two sides of an axial through hole of the lower punch, the first lower punch is matched with the first cavity, and the second lower punch is matched with the second cavity; the outer diameters of the first cylindrical part, the second cylindrical part and the first circular truncated cone part are reduced in sequence.
Preferably, the upper punch comprises a fourth cylindrical part, a fifth cylindrical part, a second circular table part and an upper punch head which are sequentially connected, and the outer diameters of the fourth cylindrical part, the fifth cylindrical part, the second circular table part and the upper punch head are sequentially reduced; the upper punch is provided with an upper punch axial through hole; the upper punch is of a hollow cylindrical structure.
Preferably, the axial through hole of the middle die is a stepped hole and comprises an upper hole and a lower hole, and the diameter of the lower hole is larger than that of the upper hole.
Preferably, the width of the radial core is smaller than the outer diameter of the central axial core;
two end faces of the central axial core are flush with two end faces corresponding to the upper hole of the axial through hole in the middle die, the upper end face of the radial core is lower than the upper end face of the central axial core, and the lower end face of the radial core is higher than the lower end face of the central axial core.
Preferably, the bottom of the central axial core, the bottom of the radial core, the joint of the radial core and the axial through hole of the middle mold, and the joint of the central axial core and the radial core are all in smooth fillet transition.
Preferably, the upper part of the axial through hole of the middle die is of a gradually-changed hole structure.
Preferably, the tops of the first lower punch and the second lower punch are respectively provided with a step part to form a step, the step parts are of a circular ring structure, the inner side surfaces of the step parts are flush with the inner side surfaces of the corresponding lower punches, and the step parts are in smooth fillet transition with the corresponding first lower punch and the corresponding second punch.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, the utility model discloses with core and die cavity integration on well mould, central axial core has replaced the dabber, has avoided the dabber to mutually support the clearance that produces with upper punch, down, adopts the product that this mould press forming obtained, slotted hole inner wall smooth, and no burr satisfies product operation requirement.
Second, the utility model discloses be the stair structure with the lower punch design, design two lower punches, correspond two die cavities on the well mould, the machining precision is high.
Third, the utility model discloses be the stair structure with the design of down punching, design an upper punch, it takes shape to correspond the product base, and well mould axial through-hole upper portion is gradual change pore structure, corresponds the gradual change external diameter structure of product base, improves product machining precision.
Fourthly, designing the axial through hole of the middle die into a stepped hole, and punching and forming the upper hole of the middle die; the lower hole is used for positioning and press forming.
Fifthly, the width of the radial core is designed to be smaller than the outer diameter of the central axial core; the two end faces of the central axial core are designed to be parallel and level with the two end faces corresponding to the upper hole of the axial through hole in the middle die, the upper end face of the radial core is lower than the upper end face of the central axial core, and the lower end face of the radial core is higher than the lower end face of the central axial core and is matched with a product, so that the processing precision of the product is guaranteed.
Sixthly, with core internal connection department, core bottom, core and well mould junction, all design for smooth fillet transition, further improve groove, downthehole wall smoothness, the no burr satisfies the product operation requirement.
And seventhly, the top of the lower punch is designed into a stepped part which is staggered inside and outside and corresponds to a stepped hole of a product, so that the processing precision of the product is further improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a middle mold band core forming mold of the present invention;
fig. 2 is a perspective view of an upper punch of the middle band core forming die of the present invention;
FIG. 3 is a cross-sectional view of an upper punch of a middle band core forming die of the present invention;
fig. 4 is a perspective view of a middle mold of the middle mold band core forming mold of the present invention;
fig. 5 is a plan view of a middle mold of the middle mold band core forming mold of the present invention;
FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 8 is a bottom view of the middle mold band core forming mold of the present invention;
FIG. 9 is a cross-sectional view of the lower punch of the middle die core forming die of the present invention;
fig. 10 is a sectional view of a middle mold band core forming mold of the present invention;
fig. 11 is a product diagram obtained by the middle mold band core forming mold of the present invention.
Detailed Description
As shown in fig. 1-10, a middle mold strip core forming die comprises an upper punch 1, a middle mold 2 and a lower punch 3, and is characterized in that an axial through hole 21 is formed in the middle mold, and the axial through hole 21 in the middle mold is cylindrical; a mold core 22 is arranged in the middle mold axial through hole 21, the mold core 22 comprises a central axial mold core 221 and radial mold cores 222 symmetrically arranged on two sides of the central axial mold core 221, the end parts of the radial mold cores 222 are connected with the inner side wall of the middle mold axial through hole 21, and the central axial mold core 221 and the two radial mold cores 222 are positioned in the same plane; the middle mold axial through holes 21 on both sides of the core 22 form a first cavity 23 and a second cavity 24.
The utility model discloses with core and die cavity integration on well mould, central axial core has replaced the dabber, has avoided the dabber to mutually support the clearance that produces with upper punch, down, adopts the product that this mould press forming obtained (see figure 11), and the slotted hole inner wall is smooth, and the no burr satisfies product operation requirement.
The lower punch 3 is provided with a lower punch axial through hole 35; the lower punch 3 comprises a first cylindrical part 31, a second cylindrical part 32, a first circular table part 33 and a lower punch 34 which are connected in sequence, wherein the lower punch 34 comprises a first lower punch 341 and a second lower punch 342 which are symmetrically arranged, the first lower punch 341 and the second lower punch 342 are positioned at two sides of a lower punch axial through hole 35, the first lower punch 341 is matched with the first die cavity 23, and the second lower punch 342 is matched with the second die cavity 24; the outer diameters of the first cylindrical portion 31, the second cylindrical portion 32, and the first circular truncated cone portion 33 decrease in this order. The upper part of the middle mold axial through hole 21 is a gradual changing hole structure 211. The utility model discloses be the stair structure with the design of down punching, design an upper punch, it takes shape to correspond the product base, and well mould axial through-hole upper portion is gradual change pore structure, corresponds the gradual change external diameter structure of product base, improves product machining precision.
The upper punch 1 comprises a fourth cylindrical part 11, a fifth cylindrical part 12, a second circular table part 13 and an upper punch 14 which are connected in sequence, and the outer diameters of the fourth cylindrical part 11, the fifth cylindrical part 12, the second circular table part 13 and the upper punch 14 are reduced in sequence; the upper punch 1 is provided with an upper punch axial through hole 15; the upper punch 14 has a hollow cylindrical structure. The utility model discloses be the stair structure with the design of undershoot, design two undershoots, correspond two die cavities on the well mould, the machining precision is high.
The middle die axial through hole 21 is a stepped hole and comprises an upper hole and a lower hole, and the diameter of the lower hole is larger than that of the upper hole. Designing an axial through hole of the middle die into a stepped hole, wherein an upper hole is used for stamping and forming a product; the lower hole is used for positioning and press forming.
The width of the radial core 222 is smaller than the outer diameter of the central axial core 221. Two end faces of the central axial core 221 are flush with two end faces corresponding to the upper hole of the axial through hole 21 on the middle die, the upper end face of the radial core 222 is lower than the upper end face of the central axial core 221, and the lower end face of the radial core 222 is higher than the lower end face of the central axial core 221. The mold core and the mold cavity are matched with the product, and the product processing precision is ensured.
And fillet guide sections are arranged at the bottom of the central axial core 221, the bottom of the radial core 222, the joint of the radial core 222 and the middle die axial through hole 21 and the joint of the central axial core 221 and the radial core 222. With core internal connection department, core bottom, core and well mould junction, all design fillet guide section, further improve groove, downthehole wall smoothness, the no burr satisfies product operation requirement.
Claims (8)
1. A middle mould belt core forming die comprises an upper punch (1), a middle mould (2) and a lower punch (3), and is characterized in that an axial through hole (21) is formed in the middle mould, and the axial through hole (21) in the middle mould is cylindrical; a mold core (22) is arranged in the middle mold axial through hole (21), the mold core (22) comprises a central axial mold core (221) and radial mold cores (222) symmetrically arranged on two sides of the central axial mold core (221), the end parts of the radial mold cores (222) are connected with the inner side wall of the middle mold axial through hole (21), and the central axial mold core (221) and the two radial mold cores (222) are located in the same plane; a first cavity (23) and a second cavity (24) are formed by middle mold axial through holes (21) on two sides of a mold core (22).
2. A middle die band core forming die as claimed in claim 1, wherein the lower punch (3) is provided with a lower punch axial through hole (35); the lower punch (3) comprises a first cylindrical part (31), a second cylindrical part (32), a first circular table part (33) and a lower punch (34) which are sequentially connected, the lower punch (34) comprises a first lower punch (341) and a second lower punch (342) which are symmetrically arranged, the first lower punch (341) and the second lower punch (342) are positioned at two sides of a lower punch axial through hole (35), the first lower punch (341) is matched with the first cavity (23), and the second lower punch (342) is matched with the second cavity (24); the outer diameters of the first cylindrical portion (31), the second cylindrical portion (32), and the first circular truncated cone portion (33) are sequentially reduced.
3. A middle mold strip core forming mold according to claim 1, wherein the upper punch (1) comprises a fourth cylindrical part (11), a fifth cylindrical part (12), a second circular table part (13) and an upper punch (14) which are connected in sequence, and the outer diameters of the fourth cylindrical part (11), the fifth cylindrical part (12), the second circular table part (13) and the upper punch (14) are reduced in sequence; the upper punch (1) is provided with an upper punch axial through hole (15); the upper punch (14) is of a hollow cylindrical structure.
4. The die for forming a middle die band core as claimed in claim 1, wherein the middle die axial through hole (21) is a stepped hole including an upper hole and a lower hole, and the diameter of the lower hole is larger than that of the upper hole.
5. A medium die length core forming die as claimed in claim 1, wherein the width of the radial core (222) is smaller than the outer diameter of the central axial core (221);
two end faces of the central axial core (221) are flush with two end faces corresponding to an upper hole of the axial through hole (21) in the middle die, the upper end face of the radial core (222) is lower than the upper end face of the central axial core (221), and the lower end face of the radial core (222) is higher than the lower end face of the central axial core (221).
6. The middle mold strip core forming mold as claimed in claim 1, wherein the bottom of the central axial core (221), the bottom of the radial core (222), the joint of the radial core (222) and the middle mold axial through hole (21), and the joint of the central axial core (221) and the radial core (222) are all in smooth fillet transition.
7. The middle mold band core forming mold according to claim 1, wherein the upper part of the middle mold axial through hole (21) is a gradual hole structure (211).
8. The forming die for the middle die band core as claimed in claim 2, wherein step portions (343) are arranged at the tops of the first lower punch (341) and the second lower punch (342) to form steps, the step portions (343) are of a circular ring structure, the inner side faces of the step portions are flush with the inner side faces of the corresponding lower punches, and the step portions (343) are in smooth round-angle transition with the corresponding first lower punch (341) and the corresponding second lower punch (342).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350036.7U CN210523817U (en) | 2019-08-19 | 2019-08-19 | Middle mould belt core forming mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350036.7U CN210523817U (en) | 2019-08-19 | 2019-08-19 | Middle mould belt core forming mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210523817U true CN210523817U (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921350036.7U Active CN210523817U (en) | 2019-08-19 | 2019-08-19 | Middle mould belt core forming mould |
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| CN (1) | CN210523817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618062A (en) * | 2021-08-19 | 2021-11-09 | 安徽益东惠电子科技有限公司 | Die-casting and shaping die for thin getter ring |
-
2019
- 2019-08-19 CN CN201921350036.7U patent/CN210523817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618062A (en) * | 2021-08-19 | 2021-11-09 | 安徽益东惠电子科技有限公司 | Die-casting and shaping die for thin getter ring |
| CN113618062B (en) * | 2021-08-19 | 2022-11-25 | 安徽益东惠电子科技有限公司 | Die-casting and shaping die for thin getter ring |
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