CN219188163U - High-precision backward extrusion die for automobile skylight guide rail - Google Patents
High-precision backward extrusion die for automobile skylight guide rail Download PDFInfo
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- CN219188163U CN219188163U CN202320339972.8U CN202320339972U CN219188163U CN 219188163 U CN219188163 U CN 219188163U CN 202320339972 U CN202320339972 U CN 202320339972U CN 219188163 U CN219188163 U CN 219188163U
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Abstract
The utility model provides a high-precision automobile skylight guide rail backward extrusion die which comprises an extrusion die body and an extrusion rod, wherein the front end of the extrusion die body is provided with a concave hole and a feed inlet, and the bottom surface of the feed inlet is provided with a die hole for extrusion molding; the extrusion rod is fixed the rear end of extrusion die body and with the coaxial setting of extrusion die body is used for promoting the extrusion die body is moved forward and is realized extrusion, and the pulling the extrusion die body is moved backward and is realized the reposition of extrusion die body, the both ends of extrusion rod run through have with the nib intercommunication is used for holding the discharge gate that the section bar passed. The high-precision automobile skylight guide rail backward extrusion die is compact in structure, can realize backward extrusion and discharge of the die, ensures discharge pressure of a discharge port, and improves product precision and yield.
Description
Technical Field
The utility model relates to an extrusion die, in particular to a high-precision backward extrusion die for a sunroof guide rail of an automobile.
Background
Hot extrusion is extrusion by heating a metal material to a hot forging temperature, that is, extrusion by heating a billet to a temperature equal to or higher than the recrystallization temperature of the metal before extrusion. The existing domestic similar products are processed by forward extrusion, namely, different dies push blanks to move towards the direction of the dies and realize extrusion, and the forward extrusion has the defects that in the extrusion process, the material outlet pressure has variation (characteristics and principles) to cause poor material outlet precision of the products, and the product yield is reduced and the loss of the dies is increased along with the increasingly improved precision requirement of the products.
Disclosure of Invention
【1】 Technical problem to be solved
The technical problem to be solved by the utility model is to provide the high-precision backward extrusion die for the automobile skylight guide rail, which has the advantages of compact structure, stable discharge pressure and high finished product quality.
【2】 Technical proposal for solving the problems
The utility model provides a high-precision backward extrusion die for a sunroof guide rail, which comprises the following components:
the extrusion die comprises an extrusion die body 1, wherein a concave hole is formed in the front end of the extrusion die body 1, a feed inlet 11 is formed in the front end of the extrusion die body, and a die hole 10 for extrusion molding is formed in the bottom surface of the feed inlet 11;
the extrusion rod 2 is fixed at the rear end of the extrusion die body 1 and is coaxially arranged with the extrusion die body 1, and is used for pushing the extrusion die body 1 to move forward and realize extrusion molding, and pulling the extrusion die body 1 to move backward and realize resetting of the extrusion die body 1, and two ends of the extrusion rod 2 penetrate through discharge holes 20 which are communicated with the die holes 10 and used for containing sectional materials to pass through.
Further, a mounting hole 12 is formed in the rear end of the extrusion die body 1, the mounting hole 12 is coaxial with the extrusion die body 1, and at least two first connecting parts are uniformly distributed on the inner wall of the mounting hole 12 in the circumferential direction; the front end of the extrusion rod 2 is provided with a mounting shaft 21 which can be inserted into the mounting hole 12, second connecting portions with the same number as the first connecting portions are uniformly distributed on the circumference of the side wall of the mounting shaft 21, and the second connecting portions are connected with the first connecting portions and realize axial limiting after the mounting shaft 21 is inserted into the mounting hole 12 and rotated.
Further, the axial length of the mounting shaft 21 is greater than or equal to the depth of the mounting hole 12.
Further, the root of the mounting shaft 21 is provided with an annular groove 210.
Further, a pin shaft and/or a bolt for axial or radial limiting is arranged between the mounting hole and the side wall of the mounting shaft 21.
Further, the first connecting portion is a clamping block, and the second connecting portion is an L-shaped clamping groove.
Further, at least two first arc-shaped protrusions 211 are uniformly distributed on the side wall of the mounting shaft 21 in the circumferential direction, a first slot is formed between two adjacent first arc-shaped protrusions 211, one end of each first arc-shaped protrusion 211 extends axially to one side of the extrusion rod and forms a limiting part 212, a second slot is formed between each first arc-shaped protrusion 211 and the end part of the extrusion rod, and the first slot and the second slot form an L-shaped clamping slot; the inner wall circumference equipartition of mounting hole 12 have with the protruding 13 of second arc that quantity is the same of first arc, the protruding axial width of second arc with the axial width of second slot is the same.
【3】 Advantageous effects
According to the high-precision automobile skylight guide rail backward extrusion die, the extrusion die is arranged on the extrusion rod, so that the extrusion die can be reversely pushed by the extrusion machine to realize extrusion discharging, the spindle holding cylinder moves to do work during extrusion, the die bearing is subjected to passive work, the discharging pressure of the bearing discharging port is kept unchanged all the time, the front and rear discharging size is ensured to be consistent, and the precision and quality of products are improved; the quick connection and disassembly can be realized through the connection of the mounting hole and the mounting shaft, and the quick connection and disassembly device is provided with a plurality of bearing surfaces, the contact surface is large, and the bearing force is strong; the clamping block and clamping groove structure is adopted, so that the processing is convenient, the rapid assembly is convenient, meanwhile, the axial bidirectional driving can be realized, and the connection stability is good; the pin shaft or the bolt is arranged, so that the connection reliability and stability are further improved, and the use is safe and reliable; the high-precision automobile skylight guide rail backward extrusion die is compact in structure, can realize backward extrusion and discharge of the die, ensures discharge pressure of a discharge port, and improves product precision and yield.
Drawings
FIG. 1 is a schematic view of a high-precision automotive sunroof rail backward extrusion die;
FIG. 2 is a front view of a high-precision sunroof rail backward extrusion die of the present utility model;
FIG. 3 is a schematic view showing the structure of an extrusion die body of the high-precision sunroof rail backward extrusion die of the present utility model;
FIG. 4 is a schematic view showing the structure of an extrusion rod of the high-precision sunroof rail backward extrusion die of the present utility model;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a front view of the extrusion stem of the high-precision sunroof rail backward extrusion die of the present utility model;
FIG. 7 is a schematic view showing the structure of a mounting shaft of a reverse extrusion die for a high-precision sunroof rail of the present utility model;
fig. 8 is a schematic view showing another angle structure of the installation shaft of the high-precision sunroof rail backward extrusion die of the present utility model.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1-8, the utility model provides a high-precision automobile skylight guide rail backward extrusion die, which comprises an extrusion die body 1 and an extrusion rod 2, wherein the extrusion die body 1 is integrally cylindrical, a concave hole is formed at the front end (a feeding end) of the extrusion die body 1, a feeding hole 11 is formed, a die hole 10 is formed at the bottom surface (the end surface perpendicular to the axis) of the feeding hole 11, and a bearing (a working belt) is arranged in the die hole and used for extrusion molding, and the cross section shape of the bearing is the cross section shape of a section bar; the extrusion rod 2 is fixed (rigidly connected) at the rear end of the extrusion die body 1, namely a discharge end, the extrusion rod 2 and the extrusion die body 1 are coaxially arranged for pushing the extrusion die body 1 to move forward so as to realize extrusion molding, and meanwhile, the extrusion die body 1 is pulled to move backwards so as to realize resetting of the extrusion die body 1, meanwhile, discharge holes 20 are formed in the two ends of the extrusion rod 2 in a penetrating mode, the discharge holes 20 are communicated with the die holes 10 and are used for allowing extruded sectional materials to pass through so as to realize discharging, and the diameter of the extrusion rod is the same as that of the extrusion die or slightly smaller than that of the extrusion die body.
Specifically, a mounting hole 12 is formed at the rear end (discharge end) of the extrusion die body 1, the mounting hole 12 is circular and coaxial with the extrusion die body 1, and the ratio of the aperture of the mounting hole 12 to the diameter of the extrusion die body 1 is 1:1.1-1:1.2, forming a cylindrical connecting structure at the rear end of the extrusion die body 1, and circumferentially uniformly distributing at least two first connecting parts on the inner wall of the mounting hole 12; the whole extrusion rod 2 is cylindrical, has a longer length and forms a rod-shaped structure, and the tail part of the extrusion rod is provided with a connecting shaft 22, the diameter of which is larger than that of the extrusion rod and is used for being connected with a driving mechanism so as to realize axial driving of the extrusion die body; a mounting shaft 21 is arranged at the front end of the extrusion rod 2, the mounting shaft 21 is cylindrical, the diameter of the mounting shaft is basically the same as the aperture of the mounting hole, the mounting shaft can be inserted into the mounting hole, a step surface (shaft shoulder) is formed between the mounting shaft and the end part of the extrusion rod, the step surface can be contacted with the rear end surface of the extrusion die body (the opening end of the mounting hole) to realize a certain axial supporting force, the extrusion rod bears a certain supporting force in the forward extrusion molding process of pushing the extrusion die body by the extrusion rod, in order to improve the fitting degree of the mounting shaft and the extrusion die body, an annular groove 210 is arranged at the root part of the mounting shaft 21, and the length of the mounting shaft 21 is smaller than or equal to the depth of the mounting hole 12 when the step surface is supported; in this embodiment, the end face of the mounting shaft is in contact with the bottom face of the mounting hole 12 (radial face perpendicular to its axis) for supporting the axial force, at this time, the length of the mounting shaft is equal to or greater than the depth of the mounting hole, the sectional area of the mounting shaft is greater than the area of the shoulder, which has a larger bearing force, so that, in order to improve reliability and stability, it is preferable that the axial length of the mounting shaft is the same as the depth of the mounting hole, at this time, the end face of the mounting shaft is in contact with the bottom face of the mounting hole, while the step face on the extrusion rod is in contact with the rear end face of the extrusion die body, while bearing the axial force, the bearing capacity is strong.
The second connecting parts are circumferentially and uniformly distributed on the side wall of the mounting shaft 21, the number of the second connecting parts is the same as that of the first connecting parts, after the mounting shaft 21 is inserted into the mounting hole 12 and rotated, the second connecting parts are connected with the first connecting parts to realize axial limit, meanwhile, a pin shaft or a bolt is arranged between the mounting hole and the side wall of the mounting shaft 21 for radial limit and radial stress prevention, so that the fixed connection between the extrusion die body and the extrusion rod is realized, the pin shafts or the bolts are multiple and are positioned on different axial surfaces to ensure the coaxiality of the extrusion rod and the extrusion die body,
in this application, first connecting portion and second connecting portion are the draw-in groove of fixture block and L shape that can realize interconnect, use first connecting portion to be the fixture block below, and second connecting portion is the draw-in groove to illustrate for the example:
referring to fig. 7-8, at least two first arc-shaped protrusions 211 are uniformly distributed in the circumferential direction of the side wall of the mounting shaft 21, in this embodiment, three first slots are formed between two adjacent first arc-shaped protrusions 211, one end of each first arc-shaped protrusion 211 extends axially towards one side of the extrusion rod and forms a limiting part 212, a second slot is formed between each first arc-shaped protrusion 211 and the end part of the extrusion rod, and each first slot and each second slot form an L-shaped clamping groove; meanwhile, second arc-shaped protrusions 13 are uniformly distributed on the circumference of the inner wall of the mounting hole 12, the number of the second arc-shaped protrusions 13 is the same as that of the first arc-shaped protrusions, the axial length of the second arc-shaped protrusions is the same as that of the second slot, the width of the second arc-shaped protrusions is smaller than or equal to that of the first slot, when the mounting hole is assembled, the second arc-shaped protrusions of the mounting hole are aligned to the first slot and axially inserted, radially rotate after being inserted to the bottom, the second arc-shaped protrusions are clamped into the second slot until the second arc-shaped protrusions are contacted with the limiting part, at the moment, the second arc-shaped protrusions are assembled in place, and then the pin shaft and the locking bolt are assembled, so that the assembly is completed; to improve the assembly accuracy, a groove 2120 is provided between the root of the limiting portion 212 and the first arc-shaped protrusion to ensure sufficient contact between the first arc-shaped protrusion and the limiting portion, i.e., to ensure radial accuracy.
According to the high-precision automobile skylight guide rail backward extrusion die, the extrusion die is arranged on the extrusion rod, so that the extrusion die can be reversely pushed by the extrusion machine to realize extrusion discharging, the spindle holding cylinder moves to do work during extrusion, the die bearing is subjected to passive work, the discharging pressure of the bearing discharging port is kept unchanged all the time, the front and rear discharging size is ensured to be consistent, and the precision and quality of products are improved; the quick connection and disassembly can be realized through the connection of the mounting hole and the mounting shaft, and the quick connection and disassembly device is provided with a plurality of bearing surfaces, the contact surface is large, and the bearing force is strong; the clamping block and clamping groove structure is adopted, so that the processing is convenient, the rapid assembly is convenient, meanwhile, the axial bidirectional driving can be realized, and the connection stability is good; the pin shaft or the bolt is arranged, so that the connection reliability and stability are further improved, and the use is safe and reliable; the high-precision automobile skylight guide rail backward extrusion die is compact in structure, can realize backward extrusion and discharge of the die, ensures discharge pressure of a discharge port, and improves product precision and yield.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (7)
1. The utility model provides a high accuracy sunroof guide rail backward extrusion mould which characterized in that includes:
the extrusion die comprises an extrusion die body, wherein a concave hole is formed in the front end of the extrusion die body, a feed inlet is formed in the front end of the extrusion die body, and a die hole for extrusion molding is formed in the bottom surface of the feed inlet;
the extrusion rod is fixed at the rear end of the extrusion die body and is coaxially arranged with the extrusion die body, and is used for pushing the extrusion die body to move forwards and realize extrusion molding, pulling the extrusion die body to move backwards and realize resetting of the extrusion die body, and two ends of the extrusion rod penetrate through discharge holes communicated with the die holes and used for containing sectional materials to pass through.
2. The high-precision automotive sunroof rail backward extrusion die according to claim 1, wherein: the rear end of the extrusion die body is provided with a mounting hole, the mounting hole is coaxial with the extrusion die body, and at least two first connecting parts are uniformly distributed on the circumference of the inner wall of the mounting hole; the front end of the extrusion rod is provided with a mounting shaft which can be inserted into the mounting hole, second connecting portions with the same number as the first connecting portions are uniformly distributed on the circumference of the side wall of the mounting shaft, and the mounting shaft is inserted into the mounting hole and rotated, and then the second connecting portions are connected with the first connecting portions and axially limited.
3. The high-precision automotive sunroof rail backward extrusion die according to claim 2, wherein: the axial length of the mounting shaft is greater than or equal to the depth of the mounting hole.
4. The high-precision automotive sunroof rail backward extrusion die according to claim 2, wherein: the root of the installation shaft is provided with an annular groove.
5. The high-precision automotive sunroof rail backward extrusion die according to claim 2, wherein: and a pin shaft and/or a bolt for axial or radial limiting is arranged between the mounting hole and the side wall of the mounting shaft.
6. The high-precision automotive sunroof rail backward extrusion die according to claim 2, wherein: the first connecting part and the second connecting part are clamping blocks and L-shaped clamping grooves which can be connected with each other.
7. The high-precision automotive sunroof rail backward extrusion die according to claim 2, wherein: at least two first arc-shaped bulges are uniformly distributed on the periphery of the side wall of the mounting shaft, a first slot is formed between every two adjacent first arc-shaped bulges, one end of each first arc-shaped bulge axially extends towards one side of the extrusion rod and forms a limiting part, a second slot is formed between each first arc-shaped bulge and the end part of the extrusion rod, and the first slot and the second slot form an L-shaped clamping groove; the inner wall circumference equipartition of mounting hole have with the protruding quantity of first arc is the same second arc protruding, the protruding axial width of second arc with the axial width of second slot is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339972.8U CN219188163U (en) | 2023-02-15 | 2023-02-15 | High-precision backward extrusion die for automobile skylight guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339972.8U CN219188163U (en) | 2023-02-15 | 2023-02-15 | High-precision backward extrusion die for automobile skylight guide rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219188163U true CN219188163U (en) | 2023-06-16 |
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ID=86706929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320339972.8U Active CN219188163U (en) | 2023-02-15 | 2023-02-15 | High-precision backward extrusion die for automobile skylight guide rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219188163U (en) |
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2023
- 2023-02-15 CN CN202320339972.8U patent/CN219188163U/en active Active
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