CN205732971U - A kind of powder metallurgy plunges pump body class shaped core bar structure - Google Patents
A kind of powder metallurgy plunges pump body class shaped core bar structure Download PDFInfo
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- CN205732971U CN205732971U CN201620759364.2U CN201620759364U CN205732971U CN 205732971 U CN205732971 U CN 205732971U CN 201620759364 U CN201620759364 U CN 201620759364U CN 205732971 U CN205732971 U CN 205732971U
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Abstract
A kind of powder metallurgy plunger displacement pump class shaped core bar structure, including plug body, it is characterized in that: described plug body is the cylindric barred body with multistage different-diameter, it is provided with base in the bottom of plug body, base is the circular configuration of two side chamfered edges, diameter after base chamfered edge is more than the diameter of cylindric barred body, and between base and cylindric barred body, hoop is provided with the chamfering step for increasing cross section.This utility model is simple and reasonable, forming effect good, preferably solve plunger displacement pump problem of plug cracking when shaping, decrease the waste of the mould scrapped due to plug and cause, substantially prolongs the mold use life-span, improve product quality and work efficiency simultaneously.
Description
Technical field
This utility model belongs to powder metallurgically manufacturing technical field, relates to a kind of mould, particularly relates to a kind of powder metallurgy
Plunges pump body class shaped core bar structure.
Background technology
Powder metallurgy be with metal or with metal dust as raw material, through shaping and sintering, manufacture metal material, compound
And the Technology of all kinds goods, it is widely used in every field, owing to powder metallurgy has the chemical group of uniqueness
Become and machinery, physical property, be that traditional casting method cannot obtain, can be used for manufacture automobile, motorcycle, textile machine,
The various powdered metal parts such as electric tool, hardware & tools, electrical equipment.
Shaping dies is the key equipment during sintered metal product produces, and iron powder used in metallurgy depended on pressure is becoming
Shaping in shape mould, the size of drip molding is the guarantee of finished parts size.Therefore, in the course of processing of plunges pump body class part
In, shape plug and be to ensure that the important tool of goods precision.
In conventional powder metallurgy forming mandrel design, the bottom shaping plug does not has step surface, therefore plug this
Place's stress ratio is relatively concentrated, and plug easily ftractures so that how long plug will scrap if not using, significantly cause the waste of mould,
Also reduce work efficiency simultaneously.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of simple in construction to close for the above-mentioned state of the art
Reason, powder metallurgy plunger displacement pump class shaped core bar structure that forming effect is good, easily ftracture solving plunger displacement pump plug when shaping,
Cause the problem that die life is short.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is: a kind of powder metallurgy plunger displacement pump class shapes
Mandrel structure, including plug body, it is characterised in that: described plug body is the cylindric barred body with multistage different-diameter,
Being provided with base in the bottom of plug body, base is the circular configuration of two side chamfered edges, and the diameter after base chamfered edge is more than cylindric
The diameter of barred body, between base and cylindric barred body, hoop is provided with the chamfering step for increasing cross section.
As improvement, the cross section of described chamfering step is trapezoidal, and the height of chamfering step is 4.5～5.5mm, chamfering platform
The inclination angle on rank is 14～16 °.
As improvement, described cylindric barred body is divided into 4 sections, and wherein the diameter of first paragraph cylinder and the 3rd section of cylinder is identical,
The diameter of second segment cylinder and the 4th section of cylinder is identical, and the length of first paragraph cylinder and the 3rd section of cylinder and diameter are all higher than second
Duan Zhuti and the length of the 4th section of cylinder and diameter.
Improving, it is flat-shaped protuberance that the front end of described cylindric barred body is coaxially provided with cross section again.
Finally, the rear end of described base is provided with center positioning hole.
Compared with prior art, the utility model has the advantage of: molding on the base that the chamfered edge of plug body is circular
Chamfering step, increases cross-sectional area, reduces stress herein and concentrates, so that plug is the most easy to crack, reaches to increase this portion
Divide the function in mould structure life-span；This utility model is simple and reasonable, forming effect good, preferably solves plunger displacement pump and is becoming
During shape, the problem of plug cracking, decreases the waste of the mould scrapped due to plug and cause, substantially prolongs mold use
In the life-span, improve product quality and work efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the side view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
As shown in Figure 1, 2, a kind of powder metallurgy plunger displacement pump class shaped core bar structure, including plug body 1, plug body 1
For having the cylindric barred body of four sections of different-diameters, wherein first paragraph cylinder 3 is identical with the diameter of the 3rd section of cylinder 5, second segment
Cylinder 4 is identical with the diameter of the 4th section of cylinder 6, and the length of first paragraph cylinder 3 and the 3rd section of cylinder 5 and diameter are all higher than second segment
Cylinder 4 and the length of the 4th section of cylinder 6 and diameter, the rear side at the 4th section of cylinder 6 in the bottom of plug body 1 is provided with base 2, the end
Seat 2 be cross section be the circular configuration of two side chamfered edges, the diameter after base 2 chamfered edge is more than the diameter of cylindric barred body, at base 2
And hoop is provided with the chamfering step 21 for increasing cross section between the 4th section of cylinder 6, the cross section of chamfering step 21 is trapezoidal,
The height H of chamfering step 21 is 5mm, and the inclination angle R of chamfering step 21 is 15 °, increases cross-sectional area by chamfering step 21,
Reduce stress herein to concentrate, prevent plug from rupturing when shaping, thus extend the service life of plug；It addition, plug is originally
It is flat-shaped protuberance 7 that the front end of body 1 is coaxially provided with cross section, and the rear end of base 2 is provided with center positioning hole 22.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection domain of the present utility model.
Claims (5)
1. a powder metallurgy plunger displacement pump class shaped core bar structure, including plug body, it is characterised in that: described plug body is
Having the cylindric barred body of multistage different-diameter, be provided with base in the bottom of plug body, base is the circular knot of two side chamfered edges
Structure, the diameter after base chamfered edge is more than the diameter of cylindric barred body, and between base and cylindric barred body, hoop is provided with for increasing
Add the chamfering step of cross section.
Powder metallurgy plunger displacement pump class shaped core bar structure the most according to claim 1, it is characterised in that: described chamfering step
Cross section be trapezoidal, the height of chamfering step is 4.5～5.5mm, and the inclination angle of chamfering step is 14～16 °.
Powder metallurgy plunger displacement pump class shaped core bar structure the most according to claim 2, it is characterised in that: described cylindric rod
Body is divided into 4 sections, and wherein the diameter of first paragraph cylinder and the 3rd section of cylinder is identical, second segment cylinder and the diameter phase of the 4th section of cylinder
With, the length of first paragraph cylinder and the 3rd section of cylinder and diameter are all higher than the length of second segment cylinder and the 4th section of cylinder with straight
Footpath.
4. according to the powder metallurgy plunger displacement pump class shaped core bar structure described in claim 1 or 2 or 3, it is characterised in that: described circle
It is flat-shaped protuberance that the front end of column barred body is coaxially provided with cross section.
5. according to the powder metallurgy plunger displacement pump class shaped core bar structure described in claim 1 or 2 or 3, it is characterised in that: the described end
The rear end of seat is provided with center positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620759364.2U CN205732971U (en) | 2016-07-18 | 2016-07-18 | A kind of powder metallurgy plunges pump body class shaped core bar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620759364.2U CN205732971U (en) | 2016-07-18 | 2016-07-18 | A kind of powder metallurgy plunges pump body class shaped core bar structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205732971U true CN205732971U (en) | 2016-11-30 |
Family
ID=57375551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620759364.2U Active CN205732971U (en) | 2016-07-18 | 2016-07-18 | A kind of powder metallurgy plunges pump body class shaped core bar structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205732971U (en) |
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2016
- 2016-07-18 CN CN201620759364.2U patent/CN205732971U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |