CN213794024U - Reverse extrusion die structure of stepped hollow shaft - Google Patents
Reverse extrusion die structure of stepped hollow shaft Download PDFInfo
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- CN213794024U CN213794024U CN202021118551.5U CN202021118551U CN213794024U CN 213794024 U CN213794024 U CN 213794024U CN 202021118551 U CN202021118551 U CN 202021118551U CN 213794024 U CN213794024 U CN 213794024U
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- material returning
- rod body
- sliding cavity
- returning rod
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Abstract
The utility model discloses a reverse extrusion die structure of ladder hollow shaft, include: the composite forming device comprises a lower die frame and an upper die frame, wherein a positioning die sleeve is arranged at the upper end of the lower die frame, a first pressure block group, a second pressure block group and a composite forming lower female die are sequentially arranged in the positioning die sleeve from bottom to top, a forming die core is arranged in the composite forming lower female die, a stepped shaft is arranged in the forming die core, a composite forming upper female die matched with the composite forming lower female die is arranged at the lower end of the upper die frame, a reverse extrusion material sealing device is arranged in the composite forming upper female die, air holes are formed in the reverse extrusion material sealing device, a material returning rod is arranged in the first pressure block group in a sliding mode, the lower end of the material returning rod is connected with a hydraulic rod of a hydraulic cylinder, the material returning rod comprises a lower material returning rod body and an upper material returning rod body, and one side of the upper end of the lower material returning rod body is movably connected with the upper material returning rod body through a pin shaft.
Description
Technical Field
The utility model relates to a mould especially relates to a reverse crowded mould structure of ladder hollow shaft.
Background
The traditional stepped shaft is produced by adopting a machining process, and the defects of long machining time, high production cost, serious material waste and the like are gradually replaced by a stepped shaft die process. Step shaft mould technology mainly includes the unloading, throw the ball, the heating, the coating, anti-crowded shaping, a plurality of technologies such as destressing annealing, wherein anti-crowded shaping need use anti-crowded mould, it is inconvenient to return the material in the current anti-crowded mould use, it needs artifical fire clamp to go the centre gripping to take out to return the material in-process, degree of automation is low, work efficiency is low, simultaneously, this kind of material returning mode still exists the last mold frame gliding and takes place to extrude human hand and the step shaft after returning the material and drop the potential safety hazard of scalding the human body, factor of safety is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provides a stepped hollow shaft reverse extrusion die structure with convenient material returning.
In order to solve the technical problem, the utility model discloses a technical scheme is: step hollow shaft backward extrusion mould structure includes: the upper die frame is characterized by comprising a lower die frame and an upper die frame, wherein a positioning die sleeve is arranged at the upper end of the lower die frame, a first pressure block group, a second pressure block group and a composite forming lower female die are sequentially arranged in the positioning die sleeve from bottom to top, a forming die core is arranged in the composite forming lower female die, a stepped shaft is arranged in the forming die core, a composite forming upper female die matched with the composite forming lower female die is arranged at the lower end of the upper die frame, a backward extrusion material sealing device is arranged in the composite forming upper female die, air holes are formed in the backward extrusion material sealing device, a material returning rod is arranged in the first pressure block group in a sliding manner, the lower end of the material returning rod is connected with a hydraulic rod of a hydraulic cylinder and comprises a lower material returning rod body and an upper material returning rod body, one side of the upper end of the lower material returning rod body is movably connected with the upper material returning rod body through a pin shaft, and a torsional spring is sleeved on the pin shaft, the lower end of the torsion spring is abutted against the lower material returning rod body, the upper end of the torsion spring is abutted against the upper material returning rod body, the other side of the upper end of the lower material returning rod body is separated from the upper material returning rod body, a mandril sliding cavity and a piston limiting sliding cavity are sequentially arranged on the other side of the upper end of the lower material returning rod body from top to bottom, a mandril matched with the mandril sliding cavity is arranged in the mandril sliding cavity in a sliding manner, a piston matched with the piston limiting sliding cavity is arranged in the piston limiting sliding cavity in a sliding manner, the lower end of the mandril extends into the piston limiting sliding cavity to be connected with the piston, a reset spring is arranged in the piston limiting sliding cavity between the mandril sliding cavity and the piston, the upper end of the reset spring is abutted against the lower material returning rod body, the lower end of the reset spring is abutted against the piston, a first air inlet channel communicated with the piston limiting sliding cavity is arranged in the lower material returning rod body at the lower end of the piston limiting sliding cavity, the hydraulic rod is internally provided with a second air inlet channel communicated with the first air inlet channel, the second air inlet channel is connected with an air compressor through an air inlet pipe, an arc-shaped buffering material receiving plate is arranged at the upper end of one side, close to the torsion spring, of the upper female die in composite forming, a material receiving bin is arranged on one side of the lower die frame, and the lower end of the arc-shaped buffering material receiving plate stretches into the material receiving bin.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: and a water cooling channel is arranged in the composite forming lower female die, one side of the composite forming lower female die is provided with a water inlet communicated with the water cooling channel, and the other side of the composite forming lower female die is provided with a water outlet communicated with the water cooling channel.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: the upper end of the ejector rod is provided with a spherical head.
The utility model has the advantages that: above-mentioned anti-mould structure of crowded of ladder hollow shaft, novel structure can realize automatic liftout and upset unloading, has saved the material returned in-process and has need artifical use fire to press from both sides the trouble that the centre gripping was taken out, and the material returned is convenient, and degree of automation is high, and work efficiency is high, has eliminated the ladder shaft after last die carrier gliding takes place to extrude human hand and material returned simultaneously and has dropped and scald human potential safety hazard, and factor of safety is high.
Drawings
Fig. 1 is a schematic structural view of the stepped hollow shaft reverse extrusion die structure of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
In the figure: 1. the device comprises a lower die frame, 2, an upper die frame, 3, a positioning die sleeve, 4, a first pressure block group, 5, a second pressure block group, 6, a composite forming lower female die, 7, a forming die core, 8, a stepped shaft, 9, a composite forming upper female die, 10, a reverse extrusion sealer, 11, air holes, 12, a material returning rod, 121, a lower material returning rod body, 122, an upper material returning rod body, 13, a hydraulic rod, 14, a pin shaft, 15, a torsion spring, 16, a top rod sliding cavity, 17, a piston limiting sliding cavity, 18, a top rod, 181, a ball head, 19, a piston, 20, a reset spring, 21, a first air inlet channel, 22, a second air inlet channel, 23, an arc buffering material receiving plate, 24, a material receiving bin, 25, a water cooling channel, 251, a water inlet, 252 and a water outlet.
Detailed Description
The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the stepped hollow shaft reverse extrusion die structure includes: a lower die carrier 1 and an upper die carrier 2, wherein the upper end of the lower die carrier 1 is provided with a positioning die sleeve 3, a first pressure block group 4, a second pressure block group 5 and a composite forming lower female die 6 are sequentially arranged in the positioning die sleeve 3 from bottom to top, a forming die core 7 is arranged in the composite forming lower female die 6, a stepped shaft 8 is arranged in the forming die core 7, a composite forming upper female die 9 matched with the composite forming lower female die 6 is arranged at the lower end of the upper die carrier 2, a back extrusion sealer 10 is arranged in the composite forming upper female die 9, an air vent 11 is arranged in the back extrusion sealer 10, a material returning rod 12 is arranged in the first pressure block group 4 in a sliding manner, the lower end of the material returning rod 12 is connected with a hydraulic rod 13 of a hydraulic cylinder, the material returning rod 12 comprises a lower material returning rod body 121 and an upper material returning rod body 122, one side of the upper end of the lower material returning rod body 121 is movably connected with the upper material returning rod body 122 through a pin shaft 14, the hinge pin 14 is sleeved with a torsion spring 15, the lower end of the torsion spring 15 abuts against a lower material returning rod body 121, the upper end of the torsion spring 15 abuts against an upper material returning rod body 122, the upper end of the lower material returning rod body 121 is separated from the upper material returning rod body 122, a mandril sliding cavity 16 and a piston limiting sliding cavity 17 are sequentially arranged on the upper end of the lower material returning rod body 121 from top to bottom, a mandril 18 matched with the mandril sliding cavity 16 is arranged in the mandril sliding cavity 16 in a sliding manner, a piston 19 matched with the piston is arranged in the piston limiting sliding cavity 17 in a sliding manner, the lower end of the mandril 18 extends into the piston limiting sliding cavity 17 to be connected with the piston 19, a reset spring 20 is arranged in the piston limiting sliding cavity 17 between the mandril sliding cavity 16 and the piston 19, the upper end of the reset spring 20 abuts against the lower material returning rod body 121, and the lower end of the reset spring 20 abuts against the piston 19, a first air inlet channel 21 communicated with the piston limiting sliding cavity 17 is arranged in the lower material returning rod body 121 at the lower end of the piston limiting sliding cavity 17, a second air inlet channel 22 communicated with the first air inlet channel 21 is arranged in the hydraulic rod 13, the second air inlet channel 22 is connected with an air compressor through an air inlet pipe, an arc-shaped buffering material receiving plate 23 is arranged at the upper end of one side, close to the torsion spring 15, of the upper female die 9 in composite forming, a material receiving bin 24 is arranged at one side of the lower die carrier 1, and the lower end of the arc-shaped buffering material receiving plate 23 extends into the material receiving bin 24.
As shown in fig. 1, in this example, a water cooling channel 25 is provided in the composite molding lower female die 6, a water inlet 251 communicated with the water cooling channel 25 is provided at one side of the composite molding lower female die 6, and a water outlet 252 communicated with the water cooling channel 25 is provided at the other side of the composite molding lower female die 6.
As shown in fig. 1 and 2, in this example, a ball head 181 is provided at the upper end of the jack 18.
When the stepped hollow shaft backward extrusion die structure is used, the upper die carrier 1 drives the upper female die 9 and the backward extrusion material sealing device 10 which are formed in a composite mode to move downwards and extend into the lower female die 6 which is formed in a composite mode to perform backward extrusion forming on the stepped shaft 8, the upper die carrier 2 is reset after the stepped shaft 8 is formed, the hydraulic cylinder at the lower end of the lower die carrier 1 is started, the hydraulic cylinder 13 of the hydraulic cylinder pushes the material returning rod 12 to move upwards, the material returning rod 12 drives the stepped shaft 8 to move upwards to the lower female die 6 which is formed in a composite mode at the upper end of the forming die core 7, the air compressor is started, the air compressor sends compressed air into the piston limiting sliding cavity 17 of the lower material returning rod body 121 through the second air inlet channel 22 and the first air inlet channel 21 so as to push the piston 19 to slide upwards in the piston limiting sliding cavity 17, the piston 19 pushes the ejector rod 18 to slide upwards in the ejector rod sliding cavity 16 and extrude the reset spring 20, go up the lower extreme right side of material returned body of rod 122 and pass through 14 clockwise rotations of round pin axle and extrude torsional spring 15, thereby go up material returned body of rod 122 clockwise upset and drive 8 slopes to the right side of step shaft, the step shaft overturns right under self action of gravity after the certain degree of slope and drops to arc buffering and connect on flitch 23, and connect flitch 23 landing to collect in connecing feed bin 24 along arc buffering, air compressor machine stop work, torsional spring 15 resets and drives material returned body of rod 122 and resets, the lower extreme left side of material returned body of rod 122 offsets with material returned body of rod 121 down again, hydraulic stem 13 resets and drives material returned 12 whole resets.
Above-mentioned anti-mould structure of crowded of ladder hollow shaft, novel structure can realize automatic liftout and upset unloading, has saved the material returned in-process and has need artifical use fire to press from both sides the trouble that the centre gripping was taken out, and the material returned is convenient, and degree of automation is high, and work efficiency is high, has eliminated the ladder shaft after last die carrier gliding takes place to extrude human hand and material returned simultaneously and has dropped and scald human potential safety hazard, and factor of safety is high.
Claims (3)
1. Step hollow shaft backward extrusion mould structure, its characterized in that: the method comprises the following steps: the composite material sealing device comprises a lower die frame (1) and an upper die frame (2), wherein a positioning die sleeve (3) is arranged at the upper end of the lower die frame (1), a first pressure block group (4), a second pressure block group (5) and a composite forming lower female die (6) are sequentially arranged in the positioning die sleeve (3) from bottom to top, a forming die core (7) is arranged in the composite forming lower female die (6), a stepped shaft (8) is arranged in the forming die core (7), a composite forming upper female die (9) matched with the composite forming lower female die (6) is arranged at the lower end of the upper die frame (2), a backward extrusion material sealing device (10) is arranged in the composite forming upper female die (9), air holes (11) are formed in the backward extrusion material sealing device (10), a material returning rod (12) is arranged in the first pressure block group (4) in a sliding manner, and the lower end of the returning rod (12) is connected with a hydraulic rod (13) of a hydraulic cylinder, the material returning rod (12) comprises a material returning rod body (121) and an upper material returning rod body (122), one side of the upper end of the material returning rod body (121) is movably connected with the upper material returning rod body (122) through a pin shaft (14), a torsion spring (15) is sleeved on the pin shaft (14), the lower end of the torsion spring (15) is abutted against the lower material returning rod body (121), the upper end of the torsion spring (15) is abutted against the upper material returning rod body (122), the other side of the upper end of the material returning rod body (121) is separated from the upper material returning rod body (122), a top rod sliding cavity (16) and a piston limiting sliding cavity (17) are sequentially arranged on the other side of the upper end of the material returning rod body (121) from top to bottom, a top rod (18) matched with the top rod sliding cavity is arranged in the top rod sliding cavity (16), and a piston (19) matched with the top rod sliding cavity is arranged in the piston limiting sliding cavity (17), the lower end of the ejector rod (18) extends into the piston limiting sliding cavity (17) to be connected with the piston (19), a reset spring (20) is arranged in the piston limiting sliding cavity (17) between the ejector rod sliding cavity (16) and the piston (19), the upper end of the reset spring (20) is abutted against the lower material returning rod body (121), the lower end of the reset spring (20) is abutted against the piston (19), a first air inlet channel (21) communicated with the piston limiting sliding cavity (17) is arranged in the lower material returning rod body (121) at the lower end of the piston limiting sliding cavity (17), a second air inlet channel (22) communicated with the first air inlet channel (21) is arranged in the hydraulic rod (13), the second air inlet channel (22) is connected with an air compressor through an air inlet pipe, an arc-shaped buffering material receiving plate (23) is arranged at the upper end of one side, close to the torsion spring (15), of the composite forming upper female die (9), one side of the lower die carrier (1) is provided with a material receiving bin (24), and the lower end of the arc-shaped buffering material receiving plate (23) extends into the material receiving bin (24).
2. The stepped hollow shaft reverse extrusion die structure according to claim 1, wherein: a water cooling channel (25) is arranged in the composite forming lower female die (6), a water inlet (251) communicated with the water cooling channel (25) is arranged on one side of the composite forming lower female die (6), and a water outlet (252) communicated with the water cooling channel (25) is arranged on the other side of the composite forming lower female die (6).
3. The stepped hollow shaft reverse extrusion die structure according to claim 1 or 2, wherein: the upper end of the ejector rod (18) is provided with a ball head (181).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118551.5U CN213794024U (en) | 2020-06-17 | 2020-06-17 | Reverse extrusion die structure of stepped hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118551.5U CN213794024U (en) | 2020-06-17 | 2020-06-17 | Reverse extrusion die structure of stepped hollow shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213794024U true CN213794024U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021118551.5U Active CN213794024U (en) | 2020-06-17 | 2020-06-17 | Reverse extrusion die structure of stepped hollow shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213794024U (en) |
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2020
- 2020-06-17 CN CN202021118551.5U patent/CN213794024U/en active Active
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