CN107952809B - Multi-section disposable closing-in forming die and forming method for pipe - Google Patents
Multi-section disposable closing-in forming die and forming method for pipe Download PDFInfo
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- CN107952809B CN107952809B CN201810007406.0A CN201810007406A CN107952809B CN 107952809 B CN107952809 B CN 107952809B CN 201810007406 A CN201810007406 A CN 201810007406A CN 107952809 B CN107952809 B CN 107952809B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 62
- 229910052757 nitrogen Inorganic materials 0.000 claims description 31
- 238000007667 floating Methods 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 230000009191 jumping Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 14
- 238000009434 installation Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
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Abstract
The invention belongs to the technical field, and particularly relates to a multi-section disposable closing-in forming die and a forming method for a pipe, wherein a supporting plate, a lower die holder, a base plate, a die plate, a stripper plate, a die fixing plate, a die II, a die I, a die fixing sleeve and an upper die holder are sequentially arranged from bottom to top; the material returning rod passes through the lower die holder, the base plate and the female die plate, one end of the material returning rod is fixedly connected with the supporting plate, and the other end of the material returning rod is fixedly connected with the discharging plate; the positioning core rod passes through the die plate, the stripper plate, the die fixing plate, the die II, the die I and the die fixing sleeve, one end of the positioning core rod is fixedly connected with the backing plate, the other end of the positioning core rod is connected with the upper die base, and the like. The invention has the advantages of easy control of the process, easy assurance of the die manufacture, low manufacturing cost, easy assurance of the product dimension precision and the shape precision, and safe and convenient operation.
Description
Technical Field
The invention belongs to the technical field of automobile accessories, and particularly relates to a multi-section disposable closing-in forming die and a forming method for a pipe.
Background
In the pipe fitting for the automobile, the pipe fitting of the structure of fig. 1 is used in many cases for the convenience of assembly and the reduction of the process steps.
The parts are provided with two steps on the pipe fitting, so that the processing technology is reduced, the material consumption is reduced, and the performance, the size and the like are not affected.
For such multi-stage stepped pipe fittings, a closing-in process is generally adopted. At present, most manufacturers adopt a mode of combining a horizontal oil press with a closing-up die to process, and for multiple steps, the multi-step hydraulic oil press is realized through repeated closing-up. The processing beat is slow, and the positioning references of multiple processing are inconsistent. And the horizontal oil press can only adopt the mode of positioning and clamping the excircle to position and return materials, does not accord with the requirement of drawing with the internal diameter positioning and the excircle is easy to cause the scratch.
Disclosure of Invention
The invention aims at: aiming at the problems, the multi-section disposable closing-in forming die and the forming method for the pipe are provided, the technical problems that a plurality of steps are clamped for a plurality of times and the standard cannot be guaranteed to be uniform by processing for a plurality of times are solved, the process is easy to master, the die manufacturing is easy to guarantee, the manufacturing cost is low, the dimensional precision and the shape precision of the product are easy to guarantee, and the operation is safe and convenient.
The invention solves the technical problems, and relates to a multi-section disposable closing-in forming die for a pipe, which is characterized in that: the die comprises a supporting plate, a lower die holder, a backing plate, a die plate, a stripper plate, a die fixing plate, a die II, a die I, a die fixing sleeve and an upper die holder which are sequentially arranged from bottom to top, wherein the lower die holder, the backing plate, the die plate and the stripper plate are tightly connected into a whole, the die fixing plate, the die II, the die I, the die fixing sleeve and the upper die holder are tightly connected into a whole, a gap is arranged between the supporting plate and the lower die holder, and the stripper plate and the die fixing plate are provided with a gap; the material returning rod passes through the lower die holder, the base plate and the female die plate, one end of the material returning rod is fixedly connected with the supporting plate, and the other end of the material returning rod is fixedly connected with the discharging plate; the positioning core rod passes through the die plate, the stripper plate, the die fixing plate, the die II, the die I and the die fixing sleeve, one end of the positioning core rod is fixedly connected with the backing plate, and the other end of the positioning core rod is connected with the upper die holder; and a limiting column is arranged between the lower die holder and the upper die holder, and two ends of the limiting column are respectively connected with the lower die holder and the upper die holder and positioned at the ends of the lower die holder and the upper die holder.
A discharging shaft, a nitrogen spring and a discharging backing plate are further arranged between the positioning core rod and the upper die holder, the discharging shaft is arranged at the top end of the positioning core rod, the nitrogen spring connects the discharging shaft and the discharging backing plate into a whole, and the discharging backing plate is arranged on the lower surface of the upper die holder; the discharging shaft, the nitrogen spring and the discharging backing plate are positioned in the concave hollow part of the female die fixing sleeve. Because the phenomenon that the pipe fitting can return along with the female die exists, a nitrogen spring is added, and the pipe fitting and the female die are prevented from returning together.
And the lower surface of the lower die holder is also provided with a lifting block which is positioned at two sides of the supporting plate, so that the supporting plate can move up and down and is convenient to operate. The supporting block is used for unloading in an up-and-down motion, and the supporting block is required to be lifted to give way.
The two limit posts are arranged at the left end part and the right end part of the lower die holder and the upper die holder respectively, and other structural parts are positioned between the positioning posts.
The limiting post is provided with a limiting block, and the limiting block is arranged on the limiting post and used for carrying out precision positioning according to the descending heights of different product adjusting devices.
The top of the limiting column is provided with a guide sleeve, and the guide sleeve has the function of eliminating equipment errors and ensuring accurate die assembly of the upper die and the lower die when the die descends.
The first die and the second die are in clearance fit with the die fixing sleeve, and the jumping is guaranteed to be adjustable. The female die is provided with a female die hole and a female die sleeve, the female die hole penetrates through the upper bottom surface and the lower bottom surface of the female die sleeve and is positioned in the center of the female die sleeve, the female die sleeve is made of carbon steel, the use of alloy is reduced, and the cost of the female die is reduced.
The connection between the neutral hydraulic press and the closing die adopts a pressing plate and a T-shaped screw to fix the upper die plate and the lower die plate of the die on the upper table top and the lower table top of the hydraulic press.
The positioning mandrel is provided with a first working step, a second working step, a positioning section and a mounting section, the first working step is connected with the second working step, the second working step is connected with the mounting section into a whole through the positioning section, and the bottom end areas of the first working step, the second working step, the positioning section and the mounting section are sequentially from small to large.
The coaxiality of the positioning mandrel is 0.02mm, and the roundness is 0.02mm.
The die fixing sleeve is provided with a discharging shaft guide hole, a die floating adjusting screw hole, an upper die fixing sleeve, a lower die fixing sleeve, a nitrogen spring avoiding hole and a die guide hole, the upper die fixing sleeve and the lower die fixing sleeve are provided with a transverse sleeve and two vertical sleeves, the transverse sleeve is connected with the two vertical sleeves to enable the upper die fixing sleeve and the lower die fixing sleeve to be H-shaped, the die floating adjusting screw hole is located on the vertical sleeve, the discharging shaft guide hole is located on the transverse sleeve, the nitrogen spring avoiding hole and the die guide hole are respectively two outward openings of the H-shaped, and the nitrogen spring and the die are installed and fixed.
The invention relates to a multi-section disposable closing-in molding method for a pipe, which comprises the following steps:
(1) Assembling a die and adjusting a gap: and assembling the die according to the die assembly drawing, and adjusting the gap between the female die and the positioning core rod through an adjusting screw on the fixing sleeve.
(2) The assembled die is arranged on a vertical oil press, the die is opened, a processing pipe fitting is arranged in the die opening state, the upper part of the die descends under the pressure of the oil press, and the pipe fitting is deformed through the combination of the first female die and the second female die and the positioning core rod, so that the aim of simultaneously processing and forming a plurality of steps is fulfilled.
(3) After descending in place, the oil press returns, the female die I and the female die II are separated from the product, and the lower oil cylinder is ejected when the oil press returns, so that the supporting plate, the material returning rod and the stripper plate are pushed to move upwards together, and the purposes of separating and taking materials from the positioning core rod are achieved.
After the positioning core rod and the female die are separated, the pipe fitting is sleeved on the positioning core rod, the female die is pressed downwards, and the pipe fitting is formed. The female die is not connected with the positioning core rod. The two are matched to process the product, and the size of the product is controlled. The pipe fitting is positioned by a positioning mandrel. Meanwhile, the runout of the pipe fitting after being processed is controlled by the coaxiality and roundness of the positioning mandrel.
In the die and the forming method, the positioning of the pipe fitting, the clearance between the positioning core rod and the female die and the taking out of the pipe fitting are ensured, and the jumping of the product after the closing-in is ensured to be important. When the pipe fitting is pressed down, the jump of the pipe fitting is determined by the positioning core rod, and the first female die and the second female die float without influencing the jump of the pipe fitting after the pipe fitting is closed. When the pipe fitting is formed, the part of the pipe fitting to be formed is extruded and formed through the core rod and the female die, the female die is fixed, and when the pipe fitting is formed, the coaxiality and roundness of the formed pipe fitting are poor due to the fact that the female die and the core rod are not coaxial.
Through using vertical oil press and binding off mould combination, can realize two steps simultaneous processing, avoided clamping many times, the location benchmark of a plurality of steps can keep unanimous, be convenient for follow-up processing and assembly. Meanwhile, the inner diameter can be used for positioning, and the requirement of a drawing positioning reference is met.
The multi-section disposable closing-in molding process for the pipe solves the technical problem that the standard cannot be unified due to repeated clamping and repeated processing of a plurality of steps, is easy to master, is easy to ensure the manufacturing of a die, has low manufacturing cost, is easy to ensure the dimensional accuracy and the shape accuracy of the product, is safe and convenient to operate, and can be widely applied.
Drawings
FIG. 1 is a schematic view of a pipe fitting according to the present invention
FIG. 2 is a schematic view of the mold assembly structure of the present invention
FIG. 3 is a schematic diagram of a female die structure according to the present invention
FIG. 4 is a schematic view of a positioning mandrel according to the present invention
FIG. 5 is a schematic view of a female die fixing sleeve according to the present invention
Wherein the identification is as follows:
1. the die comprises a block, 2, a lower die holder, 3, a material returning rod, 4, a stripper plate, 5, a positioning mandrel, 6, a die fixing plate, 7, a die fixing sleeve, 8, a discharge shaft, 9, an upper die holder, 10, a discharge base plate, 11, a die I, 12, a die II, 13, a limiting block, 14, a limiting column, 15, a die plate, 16, a base plate, 17, a supporting plate, 18, a guide column, 19, a guide sleeve, 20, a nitrogen spring, 21, a die fixing sleeve, 22, a die hole, 23, a first working step, 24, a second working step, 25, a positioning section, 26, a mounting section, 29, a discharge shaft guide hole, 30, a die floating adjusting screw hole, 31, an upper die fixing sleeve and a lower die fixing sleeve, 32, a nitrogen spring avoiding hole, 33 and a die guide hole
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
A multi-section disposable closing-in forming die for a pipe comprises a supporting plate, a lower die holder, a base plate, a die plate, a stripper plate, a die fixing plate, a die II, a die I, a die fixing sleeve and an upper die holder which are sequentially arranged from bottom to top, wherein the lower die holder, the base plate, the die plate and the stripper plate are tightly connected into a whole; the material returning rod passes through the lower die holder, the base plate and the female die plate, one end of the material returning rod is fixedly connected with the supporting plate, and the other end of the material returning rod is fixedly connected with the discharging plate; the positioning core rod passes through the die plate, the stripper plate, the die fixing plate, the die II, the die I and the die fixing sleeve, one end of the positioning core rod is fixedly connected with the backing plate, and the other end of the positioning core rod is connected with the upper die holder; and a limiting column is arranged between the lower die holder and the upper die holder, and two ends of the limiting column are respectively connected with the lower die holder and the upper die holder and positioned at the ends of the lower die holder and the upper die holder.
A discharging shaft, a nitrogen spring and a discharging backing plate are further arranged between the positioning core rod and the upper die holder, the discharging shaft is arranged at the top end of the positioning core rod, the nitrogen spring connects the discharging shaft and the discharging backing plate into a whole, and the discharging backing plate is arranged on the lower surface of the upper die holder; the discharging shaft, the nitrogen spring and the discharging backing plate are positioned in the concave hollow part of the female die fixing sleeve. The limit posts are two, and the left end part and the right end part of the lower die holder and the upper die holder are respectively positioned, and other structural parts are positioned between the position posts.
The first die and the second die are both provided with die holes and die sleeves, the die holes penetrate through the upper bottom surface and the lower bottom surface of the die sleeves and are positioned at the centers of the die sleeves, and the die sleeves are made of carbon steel, so that the use of alloy is reduced, and the die cost is reduced.
The positioning mandrel is provided with a first working step, a second working step, a positioning section and a mounting section, the first working step is connected with the second working step, the second working step is connected with the mounting section into a whole through the positioning section, and the bottom end areas of the first working step, the second working step, the positioning section and the mounting section are sequentially from small to large. The coaxiality of the positioning mandrel is 0.02mm, and the roundness is 0.02mm.
The die fixing sleeve is provided with a discharging shaft guide hole, a die floating adjusting screw hole, an upper die fixing sleeve, a lower die fixing sleeve, a nitrogen spring avoiding hole and a die guide hole, the upper die fixing sleeve and the lower die fixing sleeve are provided with a transverse sleeve and two vertical sleeves, the transverse sleeve is connected with the two vertical sleeves to enable the upper die fixing sleeve and the lower die fixing sleeve to be of an H shape, the die floating adjusting screw hole is located on the vertical sleeve, the discharging shaft guide hole is located on the transverse sleeve, the nitrogen spring avoiding hole and the die guide hole are respectively two outward openings of the H shape, and the nitrogen spring and the die are fixedly installed.
The connection between the neutral hydraulic press and the closing die adopts a pressing plate and a T-shaped screw to fix the upper die plate and the lower die plate of the die on the upper table top and the lower table top of the hydraulic press. The specific structure and the size of the positioning core rod and the female die of the die can be set according to the pipe fitting structure.
Example 2
A multi-section disposable closing-in forming die for a pipe comprises a supporting plate, a lower die holder, a base plate, a die plate, a stripper plate, a die fixing plate, a die II, a die I, a die fixing sleeve and an upper die holder which are sequentially arranged from bottom to top, wherein the lower die holder, the base plate, the die plate and the stripper plate are tightly connected into a whole; the material returning rod passes through the lower die holder, the base plate and the female die plate, one end of the material returning rod is fixedly connected with the supporting plate, and the other end of the material returning rod is fixedly connected with the discharging plate; the positioning core rod passes through the die plate, the stripper plate, the die fixing plate, the die II, the die I and the die fixing sleeve, one end of the positioning core rod is fixedly connected with the backing plate, and the other end of the positioning core rod is connected with the upper die holder; and a limiting column is arranged between the lower die holder and the upper die holder, and two ends of the limiting column are respectively connected with the lower die holder and the upper die holder and positioned at the ends of the lower die holder and the upper die holder.
A discharging shaft, a nitrogen spring and a discharging backing plate are further arranged between the positioning core rod and the upper die holder, the discharging shaft is arranged at the top end of the positioning core rod, the nitrogen spring connects the discharging shaft and the discharging backing plate into a whole, and the discharging backing plate is arranged on the lower surface of the upper die holder; the discharging shaft, the nitrogen spring and the discharging backing plate are positioned in the concave hollow part of the female die fixing sleeve.
And the lower surface of the lower die holder is also provided with a heightening block which is positioned at two sides of the supporting plate, thereby being beneficial to the up-and-down movement and operation of the supporting plate. The supporting block is used for unloading in an up-and-down motion, and the supporting block is required to be lifted to give way.
The limit posts are two, and the left end part and the right end part of the lower die holder and the upper die holder are respectively positioned, and other structural parts are positioned between the position posts. The limiting post is provided with a limiting block. The top of the limit column is provided with a guide sleeve.
The first female die and the second female die are in clearance fit with the female die fixing sleeve, so that the jumping is ensured to be adjustable. The first die and the second die are both provided with die holes and die sleeves, the die holes penetrate through the upper bottom surface and the lower bottom surface of the die sleeves and are positioned in the centers of the die sleeves, and the die sleeves are made of carbon steel, so that the use of alloy is reduced, and the die cost is reduced.
The positioning mandrel is provided with a first working step, a second working step, a positioning section and a mounting section, the first working step is connected with the second working step, the second working step is connected with the mounting section into a whole through the positioning section, and the bottom end areas of the first working step, the second working step, the positioning section and the mounting section are sequentially from small to large. The coaxiality of the positioning mandrel is 0.02mm, and the roundness is 0.02mm.
The die fixing sleeve is provided with a discharging shaft guide hole, a die floating adjusting screw hole, an upper die fixing sleeve, a lower die fixing sleeve, a nitrogen spring avoiding hole and a die guide hole, the upper die fixing sleeve and the lower die fixing sleeve are provided with a transverse sleeve and two vertical sleeves, the transverse sleeve is connected with the two vertical sleeves to enable the upper die fixing sleeve and the lower die fixing sleeve to be of an H shape, the die floating adjusting screw hole is located on the vertical sleeve, the discharging shaft guide hole is located on the transverse sleeve, the nitrogen spring avoiding hole and the die guide hole are respectively two outward openings of the H shape, and the nitrogen spring and the die are fixedly installed.
The connection between the neutral hydraulic press and the closing die adopts a pressing plate and a T-shaped screw to fix the upper die plate and the lower die plate of the die on the upper table top and the lower table top of the hydraulic press. The specific structure and the size of the positioning core rod and the female die of the die can be set according to the pipe fitting structure.
Example 3
The multi-section disposable closing-in forming method for the pipe comprises the following steps: (1) assembling a die and adjusting a gap: and assembling the die according to the die assembly drawing, and adjusting the gap between the female die and the positioning core rod through an adjusting screw on the fixing sleeve.
(2) The assembled die is arranged on a vertical oil press, the die is opened, a processing pipe fitting is arranged in the die opening state, the upper part of the die descends under the pressure of the oil press, and the pipe fitting is deformed through the combination of the first female die and the second female die and the positioning core rod, so that the aim of simultaneously processing and forming a plurality of steps is fulfilled.
(3) After descending to the position of the limit post, the oil press returns, the female die I and the female die II are separated from the product, and the lower oil cylinder is ejected when the oil press returns, so that the supporting plate, the material returning rod and the stripper plate are pushed to move upwards together, and the purposes of separating the pipe fitting from the positioning core rod and taking materials are achieved.
The nitrogen spring installation is completed by a jacking nitrogen spring installation seat, and the jacking nitrogen spring installation seat is provided with a threaded installation hole and a female die installation hole at the bottom end of the nitrogen spring.
After the positioning core rod and the female die are separated, the pipe fitting is sleeved on the positioning core rod, the female die is pressed downwards, and the pipe fitting is formed. The female die is not connected with the positioning core rod. The two are matched to process the product, and the size of the product is controlled. The pipe fitting is positioned by a positioning mandrel. Meanwhile, the runout of the pipe fitting after being processed is controlled by the coaxiality and roundness of the positioning mandrel.
When the pipe fitting is pressed down, the jump of the pipe fitting is determined by the positioning core rod, and the first female die and the second female die float without influencing the jump after the pipe fitting is closed.
In this process, it is critical to ensure the positioning of the tube, the positioning of the clearance between the mandrel and the die, and the removal of the tube, and to ensure the runout of the product after the necking, and the specific part diagrams are shown in fig. 3 and 4.
Through using vertical oil press and binding off moulded die combination, can realize two steps simultaneous processing, avoided clamping many times, the location benchmark of a plurality of steps can keep unanimous, be convenient for follow-up processing and assembly. Meanwhile, the inner diameter can be used for positioning, and the requirement of a drawing positioning reference is met. The specific mold assembly is shown in fig. 2.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. A tubular product multistage disposable binding off moulded die, its characterized in that: the die comprises a supporting plate, a lower die holder, a backing plate, a die plate, a stripper plate, a die fixing plate, a die II, a die I, a die fixing sleeve and an upper die holder which are sequentially arranged from bottom to top, wherein the lower die holder, the backing plate, the die plate and the stripper plate are tightly connected into a whole, the die fixing plate, the die II, the die I, the die fixing sleeve and the upper die holder are tightly connected into a whole, a gap is arranged between the supporting plate and the lower die holder, and the stripper plate and the die fixing plate are provided with a gap; the material returning rod passes through the lower die holder, the base plate and the female die plate, one end of the material returning rod is fixedly connected with the supporting plate, and the other end of the material returning rod is fixedly connected with the discharging plate; the positioning core rod passes through the die plate, the stripper plate, the die fixing plate, the die II, the die I and the die fixing sleeve, one end of the positioning core rod is fixedly connected with the backing plate, and the other end of the positioning core rod is connected with the upper die holder; a limiting column is arranged between the lower die holder and the upper die holder, and two ends of the limiting column are respectively connected with the lower die holder and the upper die holder and positioned at the ends of the lower die holder and the upper die holder;
a discharging shaft, a nitrogen spring and a discharging backing plate are further arranged between the positioning core rod and the upper die holder, the discharging shaft is arranged at the top end of the positioning core rod, the nitrogen spring connects the discharging shaft and the discharging backing plate into a whole, and the discharging backing plate is arranged on the lower surface of the upper die holder; the discharging shaft, the nitrogen spring and the discharging backing plate are positioned at the concave hollow part of the female die fixing sleeve;
the first die and the second die are in clearance fit with the die fixing sleeve, so that the jumping is ensured to be adjustable; the female die fixing sleeve is provided with a female die floating adjusting screw hole.
2. The multi-section disposable closing-in forming die for pipes according to claim 1, wherein: and the lower surface of the lower die holder is also provided with a lifting block which is positioned at two sides of the supporting plate.
3. The multi-section disposable closing-in forming die for pipes according to claim 1, wherein: the limiting columns are two and are respectively positioned at the left end part and the right end part of the lower die holder and the upper die holder.
4. A multi-segment disposable closing-in forming die for tubing as claimed in claim 3, wherein: the limiting post is provided with a limiting block, and the top of the limiting post is provided with a guide sleeve.
5. The multi-section disposable closing-in forming die for pipes according to claim 1, wherein: the female die is provided with a female die hole and a female die sleeve, the female die hole penetrates through the upper bottom surface and the lower bottom surface of the female die sleeve and is positioned at the center of the female die sleeve, and the female die sleeve is made of carbon steel.
6. The multi-section disposable closing-in forming die for pipes according to claim 1, wherein: the positioning core rod is provided with a first working step, a second working step, a positioning section and a mounting section, wherein the first working step is connected with the second working step, the second working step is connected with the mounting section into a whole through the positioning section, and the bottom end areas of the first working step, the second working step, the positioning section and the mounting section are sequentially reduced from small to large.
7. The multi-section disposable closing-in forming die for pipes according to claim 1, wherein: the die fixing sleeve is provided with a discharging shaft guide hole, an upper die fixing sleeve, a lower die fixing sleeve, a nitrogen spring avoiding hole and a die guide hole, the upper die fixing sleeve and the lower die fixing sleeve are provided with a transverse sleeve and two vertical sleeves, the transverse sleeve is connected with the two vertical sleeves to enable the upper die fixing sleeve and the lower die fixing sleeve to be of an H shape, a die floating adjusting screw hole is located on the vertical sleeve, the discharging shaft guide hole is located on the transverse sleeve, the nitrogen spring avoiding hole and the die guide hole are respectively two outward openings of the H shape, and the nitrogen spring and the die are installed and fixed.
8. The method for molding the multi-section disposable closing-in of the pipe according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:
(1) Assembling a die and debugging a gap;
(2) The assembled die is arranged on a vertical oil press, the die opening state is filled into a processed pipe fitting, the upper part of the die descends under the pressure of the oil press, and the pipe fitting is deformed through the combination of a female die I and a female die II and a positioning core rod, so that the aim of simultaneously processing and forming a plurality of steps is fulfilled;
(3) After descending in place, the oil press returns, the female die I and the female die II are separated from the product, and the lower oil cylinder is ejected when the oil press returns, so that the supporting plate, the material returning rod and the stripper plate are pushed to move upwards together, and the purposes of separating and taking materials from the positioning core rod are achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007406.0A CN107952809B (en) | 2018-01-04 | 2018-01-04 | Multi-section disposable closing-in forming die and forming method for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007406.0A CN107952809B (en) | 2018-01-04 | 2018-01-04 | Multi-section disposable closing-in forming die and forming method for pipe |
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| Publication Number | Publication Date |
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| CN107952809A CN107952809A (en) | 2018-04-24 |
| CN107952809B true CN107952809B (en) | 2023-12-15 |
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| CN205056829U (en) * | 2015-10-15 | 2016-03-02 | 镇江市恩帝斯精密机械有限公司 | Throat mould |
| CN205165388U (en) * | 2015-10-29 | 2016-04-20 | 重庆良能机械有限公司 | Extrusion die of shoulder hole barrier part |
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Address after: Shanchuan community, Jine street, Longchang City, Neijiang City, Sichuan Province Applicant after: Longchang Shanchuan Machinery Co.,Ltd. Address before: Shanchuan Town, Longchang County, Neijiang City, Sichuan Province Applicant before: LONGCHANG SHANCHUAN PRECISION WELDED TUBE Co.,Ltd. |
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