CN109013736B - Extrusion molding die and device for rectangular torsion waveguide tube and extrusion molding method - Google Patents
Extrusion molding die and device for rectangular torsion waveguide tube and extrusion molding method Download PDFInfo
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- CN109013736B CN109013736B CN201811103715.4A CN201811103715A CN109013736B CN 109013736 B CN109013736 B CN 109013736B CN 201811103715 A CN201811103715 A CN 201811103715A CN 109013736 B CN109013736 B CN 109013736B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 16
- 241000446313 Lamella Species 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010923 batch production Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 8
- 238000000465 moulding Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010287 polarization 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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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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
- B21C23/21—Presses specially adapted for extruding metal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses an extrusion molding die and equipment for a rectangular twisted waveguide tube and an extrusion molding method, wherein the extrusion molding die consists of a fixed sub-die, a Y-direction movable die and a Z-direction movable die; after the fixed sub-die, the Y-direction movable die and the Z-direction movable die are mutually attached, cavity surfaces of the rectangular twisted waveguide tube before and after being extruded and twisted are jointly formed in the fixed sub-die, the Y-direction movable die and the Z-direction movable die; the Y-direction movable mould lamella and the fixed mould lamella are matched with one wide side surface and two narrow side surfaces in the rectangular torsion waveguide tube before and after being extruded and twisted; the Z-direction moving die is matched with the other wide side surface of the rectangular twisted waveguide tube before and after being extruded and twisted; the three-flap extrusion forming die capable of being opened and closed is adopted, so that auxiliary materials are not needed to be filled, the surface quality of the inner cavity of the torsion waveguide tube is further guaranteed, the deformation of the local part of the tube wall is reduced, the processing precision is high, the production cost is low, the operation is simple, the production efficiency is high, and the method is more suitable for automatic and batch production of the torsion waveguide tube.
Description
Technical Field
The invention relates to the field of production devices and equipment for manufacturing rectangular twisted waveguides and production methods, in particular to an extrusion forming die and equipment for manufacturing rectangular twisted waveguides and an extrusion forming method.
Background
The waveguide is a functional part of a microwave circuit manufactured by using a hollow metal tube or a hollow cavity body and the like, and has the function of transmitting signals or power. The twisted waveguide is also called a waveguide twisted joint, is a waveguide with the wide side and the narrow side at two ends of which the directions are exchanged by 90 degrees, and is characterized in that the polarization direction can be changed by 90 degrees through the waveguide, and the propagation direction can not be changed; when connecting waveguides, when the front section waveguide and the rear section waveguide are opposite in broadside and narrow side, a twisted waveguide is needed to be inserted for transition; the length of the twisted waveguide should be an integer multiple of λg/2, and the shortest must not be less than 2λg (λg is the waveguide wavelength); is widely used in the radar field because of its small loss of transmitted electromagnetic waves.
The twisted waveguide is generally composed of a rectangular twisted waveguide and flanges connecting both ends thereof, as shown in fig. 1, fig. 1 is an enlarged perspective view of a rectangular twisted waveguide of the prior art, and the rectangular twisted waveguide 900 is a section of a linear hollow metal square tube having a rectangular cross section before forming, and after twisting forming, the rectangular long sides of one end 910 of the rectangular twisted waveguide 900 and the rectangular long sides of the same side as the other end 920 thereof are spatially perpendicular to each other.
At present, the traditional production method for manufacturing the rectangular torsion waveguide tube is to realize the torsion molding of the rectangular torsion waveguide tube by manual mechanical torsion or welding molding; the traditional welding forming has the defects of high design difficulty, complex working procedure, large deformation and the like; the manual mechanical twisting often needs to fill auxiliary materials such as rubber, spring steel sheets and the like into the inner space of the rectangular twisted waveguide tube before twisting, then fix one end of the rectangular twisted waveguide tube, and then manually twist the other end of the rectangular twisted waveguide tube around the axial direction of the rectangular twisted waveguide tube, so that the production efficiency is very low.
Moreover, the traditional mechanical twisting method by filling auxiliary materials has the defects of difficult operation and cleaning, high processing difficulty, high production cost and the like, and the dimensional accuracy and the surface quality of the waveguide cavity are difficult to ensure; meanwhile, in the process of mechanical torsion by hand, the internal stress of the material due to deformation is difficult to be conducted from the torsion end to the fixed end, so that the internal stress concentration is easier to be caused, and the local deformation of the pipe wall of the rectangular torsion waveguide pipe is further caused.
Accordingly, there is a need for improvement and development in the art.
Disclosure of Invention
In order to solve the technical problems, the invention provides an extrusion molding die for a rectangular torsion waveguide tube, which can ensure the surface quality of an inner cavity of the torsion waveguide tube and reduce the local deformation of the tube wall.
Meanwhile, the invention also provides extrusion molding equipment of the rectangular torsion waveguide tube, which has high processing precision and low production cost.
Meanwhile, the invention also provides an extrusion molding method of the rectangular torsion waveguide tube, which is simple to operate and high in production efficiency.
The technical scheme of the invention is as follows: an extrusion forming die for a rectangular twisted waveguide tube is used for forming the rectangular twisted waveguide tube in an extrusion mode, and consists of a fixed sub-die, a Y-direction movable die and a Z-direction movable die; after the fixed sub-die, the Y-direction movable die and the Z-direction movable die are mutually attached, cavity surfaces of the rectangular twisted waveguide tube before and after being extruded and twisted are jointly formed in the fixed sub-die, the Y-direction movable die and the Z-direction movable die; wherein,
the fixed sub-die is provided with a first cavity surface and a second cavity surface, the first cavity surface is matched with one narrow side surface of the rectangular torsion waveguide tube before and after being extruded and twisted, the plane section of the first cavity surface is vertically intersected with the plane section of the second cavity surface before the rectangular torsion waveguide tube is extruded and twisted, and the plane section of the first cavity surface is vertically intersected with the plane section of the second cavity surface after the rectangular torsion waveguide tube is extruded and twisted;
the Y-direction movable die is provided with a third die cavity surface and a fourth die cavity surface, the third die cavity surface is matched with the other narrow side surface of the rectangular twisted waveguide before and after being extruded and twisted, and the plane section of the third die cavity surface is vertically intersected with the plane section of the fourth die cavity surface before the rectangular twisted waveguide is extruded and twisted;
after the Y-direction movable die and the fixed sub die are attached, the combined second cavity surface and fourth cavity surface are matched with one wide side surface of the rectangular twisted waveguide before and after being extruded and twisted;
and a fifth cavity surface is arranged on the Z-direction moving die, and the fifth cavity surface is matched with the other wide side surface in the rectangular torsion waveguide tube before and after being extruded and twisted.
The extrusion molding die of the rectangular torsion waveguide tube comprises: after the Y-direction movable die and the fixed sub-die are attached, the plane section of the third cavity surface of the Y-direction movable die at the position after the rectangular twisted waveguide tube is extruded and twisted is outwards expanded, and the third cavity surface of the Y-direction movable die extends into and is attached to the lower part of the plane section of the second cavity surface of the fixed sub-die at the position after the rectangular twisted waveguide tube is extruded and twisted.
The extrusion molding die of the rectangular torsion waveguide tube comprises:
the first cavity surface sequentially comprises a first front plane section, a first middle curved surface section and a first back plane section, the junction between the first front plane section and the first middle curved surface section is in smooth transition, and the junction between the first middle curved surface section and the first back plane section is in smooth transition; and the first front plane section and the first rear plane section are spatially perpendicular to each other;
the second cavity surface sequentially comprises a second front plane section, a second middle curved surface section and a second back plane section, the junction between the second front plane section and the second middle curved surface section is in smooth transition, and the junction between the second middle curved surface section and the second back plane section is in smooth transition; and the second front planar segment and the second rear planar segment are spatially perpendicular to each other.
The extrusion molding die of the rectangular torsion waveguide tube comprises:
the third cavity surface sequentially comprises a third front plane section, a third middle curved surface section and a third back plane section, the joint between the third front plane section and the third middle curved surface section is in smooth transition, and the joint between the third middle curved surface section and the third back plane section is in smooth transition; and the third front plane section and the third rear plane section are spatially perpendicular to each other;
the fourth cavity surface consists of a fourth front plane section and a fourth middle curved surface section, and the joint between the fourth front plane section and the fourth middle curved surface section is in smooth transition.
The extrusion molding die of the rectangular torsion waveguide tube comprises: the area of the plane section of the fourth cavity surface of the Y-direction movable die is the same as that of the plane section of the second cavity surface of the fixed sub-die before the rectangular torsion waveguide tube is extruded and twisted.
The extrusion molding die of the rectangular torsion waveguide tube comprises: the area of the curved surface section of the fourth cavity surface of the Y-direction movable die is smaller than one third of the area of the curved surface section of the second cavity surface of the fixed sub-die after the rectangular torsion waveguide tube is extruded and twisted.
The extrusion molding die of the rectangular torsion waveguide tube comprises: the fifth cavity surface sequentially comprises a fifth front plane section, a fifth middle curved surface section and a fifth back plane section, the junction between the fifth front plane section and the fifth middle curved surface section is in smooth transition, and the junction between the fifth middle curved surface section and the fifth back plane section is in smooth transition; and the fifth front planar segment and the fifth rear planar segment are spatially perpendicular to each other.
The extrusion molding die of the rectangular torsion waveguide tube comprises: the width of the Z-direction movable die before the rectangular twisted waveguide tube is extruded and twisted is equal to the width of the combined body of the Y-direction movable die and the fixed sub-die after the Y-direction movable die is attached to the fixed sub-die.
The extrusion molding equipment of the rectangular torsional waveguide tube comprises a vertical punch press frame and a control cabinet, wherein a Z-direction hydraulic cylinder in control connection with the control cabinet is vertically arranged at the upper part of the vertical punch press frame along the Z-axis direction, and the extrusion molding die of the rectangular torsional waveguide tube is arranged on the working table of the vertical punch press frame; wherein,
the workbench surface is provided with a fixed bottom plate, a die fixed plate is fixed on the fixed bottom plate, a guide rail pressing plate is fixed on the die fixed plate, the guide rail pressing plate is -shaped, and a peripheral groove is formed in the lower edge of the inner side surface of the guide rail pressing plate; in the fixed sub-die, a fixed sub-die boss which is adaptively clamped into the groove is arranged at the lower parts of the other three sides except for the side surface which is attached to the Y-direction moving die; the lower parts of the two ends of the Y-direction movable mould lamella are respectively provided with a Y-direction movable mould lamella boss which is adapted to be clamped into the groove;
the top surface of the Z-direction movable die is fixed with a mounting handle which is connected to the lower end of the Z-direction hydraulic cylinder; a Y-direction hydraulic oil cylinder in control connection with the control cabinet is horizontally arranged on the fixed bottom plate along the Y-axis direction, and the front end of the Y-direction hydraulic oil cylinder is connected with the outer side surface of the Y-direction movable die through a corresponding connecting piece; and an X-direction hydraulic cylinder in control connection with the control cabinet is horizontally arranged along the X-axis direction, and the X-direction hydraulic cylinder is connected with an extrusion tool through a corresponding connecting piece.
An extrusion molding method of a rectangular twisted waveguide tube, manufacturing a rectangular twisted waveguide tube by using the extrusion molding die of the rectangular twisted waveguide tube, wherein the extrusion molding method comprises the following steps:
A. the Y-direction movable mould lamella and the fixed sub-mould lamella are combined together to form a first mould lamella assembly, and the front surface and the rear surface of the first mould lamella assembly are clamped from the outer side surface of the fixed sub-mould lamella and the outer side surface of the Y-direction movable mould lamella;
B. placing a linear hollow metal square tube on the front half part of the first die assembly, and sleeving one end of the hollow metal square tube on the head part of the extrusion tool;
C. combining the Z-direction movable die with the first die assembly to form a second die assembly, and clamping two sides of the second die assembly from the common bottom surface of the fixed sub-die and the Y-direction movable die and the top surface of the Z-direction movable die up and down;
D. fixing the second die assembly on a workbench surface, and extruding the hollow metal square tube to the rear end of the second die assembly by utilizing an extrusion tool;
E. withdrawing the extrusion tool;
F. loosening the clamping force to the upper and lower directions of the second die assembly, and removing the Z-direction movable die;
G. and releasing the clamping force in the front-rear direction of the first die assembly, removing the Y-direction moving die, and taking out the rectangular torsion waveguide tube.
The extrusion forming die and equipment for the rectangular twisted waveguide tube and the extrusion forming method provided by the invention have the advantages that the openable and closable three-piece extrusion forming die is adopted, so that auxiliary materials are not required to be filled, the surface quality of the inner cavity of the twisted waveguide tube is further ensured, the deformation of the local part of the tube wall of the twisted waveguide tube is reduced, the processing precision is high, the production cost is low, the operation is simple, the production efficiency is high, and the extrusion forming die is more suitable for the automatic and batch production of the twisted waveguide tube.
Drawings
FIG. 1 is an enlarged perspective view of a prior art rectangular twisted waveguide;
FIG. 2 is a perspective view of an embodiment of a rectangular twisted waveguide extrusion die of the present invention;
FIG. 3 is an exploded view of an embodiment of a rectangular twist-tube extrusion die of the present invention (including the rectangular twist-tube of FIG. 1);
FIG. 4 is an enlarged perspective view of the fixed sub-petals of FIG. 3;
FIG. 5 is an enlarged perspective view of the Y-direction moving die of FIG. 3;
FIG. 6 is a perspective view of the Y-direction moving mold half of FIG. 3 after attachment to a stationary sub-mold half;
FIG. 7 is an enlarged perspective view of the Z-directed moving die of FIG. 3;
FIG. 8 is a perspective view of an embodiment of a rectangular twisted waveguide extrusion apparatus of the present invention;
FIG. 9 is an enlarged perspective view of a component on the work surface of FIG. 8;
FIG. 10 is an enlarged perspective view of the rail clamp of FIG. 9;
FIG. 11 is an enlarged view of a portion of FIG. 9 after removal of the Z-directed moving die;
FIG. 12 is an enlarged perspective view of the compression tool of FIG. 9;
fig. 13 is a perspective view of fig. 11 after the rectangular torsion waveguide is removed again.
Detailed Description
The following detailed description and examples of the invention are presented in conjunction with the drawings, and the described examples are intended to illustrate the invention and not to limit the invention to the specific embodiments.
As shown in fig. 2 and 3, fig. 2 is a perspective view of an embodiment of a rectangular twist-tube extrusion die, and fig. 3 is an exploded view of an embodiment of a rectangular twist-tube extrusion die of the present invention (including the rectangular twist-tube of fig. 1); the extrusion die 100 is composed of a fixed sub-die 110, a Y-direction moving die 120 and a Z-direction moving die 130; after the fixed sub-mold pieces 110, the Y-direction moving mold pieces 120 and the Z-direction moving mold pieces 130 are mutually attached, cavity surfaces of the rectangular twisted waveguide 900 before and after being twisted by extrusion are formed together in the fixed sub-mold pieces, and the rectangular twisted waveguide 900 is formed by extrusion; preferably, the assembly clearance between the cavity hole after die assembly and the rectangular twisted waveguide 900 is not more than 0.02mm, and the surface roughness of all cavity surfaces is not more than Ra0.8, so as to ensure the machining precision of products; the arrow direction in fig. 3 is the direction of the extrusion rectangular twisted waveguide 900 into the extrusion die 100.
Referring to fig. 4, fig. 4 is an enlarged perspective view of the fixed sub-die of fig. 3, the fixed sub-die 110 is provided with a first cavity surface 111 and a second cavity surface 112, and the first cavity surface 111 is adapted to one narrow side 902 of the rectangular twisted waveguide 900 of fig. 1 before and after being twisted by extrusion.
Specifically, the first cavity surface 111 sequentially comprises a first front plane section 111a, a first middle curved surface section 111b and a first back plane section 111c, the connection between the first front plane section 111a and the first middle curved surface section 111b is in smooth transition, and the connection between the first middle curved surface section 111b and the first back plane section 111c is in smooth transition; and the first front planar segment 111a and the first rear planar segment 111c are spatially perpendicular to each other.
Specifically, the second cavity surface 112 sequentially comprises a second front plane section 112a, a second middle curved surface section 112b and a second back plane section 112c, the connection between the second front plane section 112a and the second middle curved surface section 112b is in smooth transition, and the connection between the second middle curved surface section 112b and the second back plane section 112c is in smooth transition; and the second front planar segment 112a and the second rear planar segment 112c are spatially perpendicular to each other.
Before the rectangular-shaped torsion waveguide 900 of fig. 3 is extrusion-twisted, the planar section of the first cavity surface 111 (i.e., the first front planar section 111 a) perpendicularly intersects the planar section of the second cavity surface 112 (i.e., the second front planar section 112 a); and the planar section of the first cavity surface 111 (i.e., the first back planar section 111 c) perpendicularly intersects the planar section of the second cavity surface 112 (i.e., the second back planar section 112 c) after the rectangular torsion waveguide 900 is extrusion-twisted.
Referring to fig. 5, fig. 5 is an enlarged perspective view of the Y-moving die of fig. 3, the view angle of fig. 5 being changed from that of fig. 3 in order to clearly illustrate one side of the molding surface thereof; the Y-direction moving die 120 is provided with a third cavity surface 121 and a fourth cavity surface 122, and the third cavity surface 121 is matched with the other narrow side 901 of the rectangular twisted waveguide 900 in fig. 1 before and after being twisted by extrusion.
Specifically, the third cavity surface 121 sequentially comprises a third front plane section 121a, a third middle curved surface section 121b and a third back plane section 121c, the connection between the third front plane section 121a and the third middle curved surface section 121b is in smooth transition, and the connection between the third middle curved surface section 121b and the third back plane section 121c is in smooth transition; and the third front planar segment 121a and the third rear planar segment 121c are spatially perpendicular to each other.
Specifically, the fourth cavity surface 122 is composed of a fourth front plane section 122a and a fourth middle curved surface section 122b, and the junction between the fourth front plane section 122a and the fourth middle curved surface section 122b is in smooth transition.
Before the rectangular-shaped torsion waveguide 900 of fig. 3 is extrusion-twisted, the planar section of the third cavity surface 121 (i.e., the third front planar section 121 a) perpendicularly intersects the planar section of the fourth cavity surface 122 (i.e., the fourth front planar section 122 a).
Referring to fig. 6, fig. 6 is an enlarged perspective view of the Y-moving mold half 120 and the fixed sub-mold half 110 in fig. 3 after being attached, and after being combined, the second cavity surface 112 of the fixed sub-mold half 110 and the fourth cavity surface 122 of the Y-moving mold half 120 are jointly matched with one wide side 904 of the rectangular twisted waveguide 900 in fig. 1 before and after being twisted by extrusion.
Specifically, before the rectangular twisted waveguide 900 of fig. 3 is extrusion twisted, the second front plane section 112a of the second cavity surface 112 and the fourth front plane section 122a of the fourth cavity surface 122 are jointly matched to one wide side 904 of the rectangular twisted waveguide 900 of fig. 1 before being extrusion twisted; whereas, after the rectangular twisted waveguide 900 of fig. 3 is extrusion twisted, the second middle curved section 112b of the second cavity surface 112 and the fourth middle curved section 122b of the fourth cavity surface 122 are jointly adapted to the curved section of one wide side 904 of the rectangular twisted waveguide 900 of fig. 1 after being extrusion twisted, and the second rear flat section 112c is adapted to the flat section of one wide side 904 of the rectangular twisted waveguide 900 of fig. 1 after being extrusion twisted.
Preferably, the area of the plane section of the fourth cavity surface 122 of the Y-direction moving die 120 is the same as the area of the plane section of the second cavity surface 112 of the fixed sub-die 110 before the rectangular twisted waveguide 900 in fig. 3 is extruded and twisted; i.e. the area of the fourth front planar segment 122a of the fourth cavity surface 122 is the same as the area of the second front planar segment 112a of the second cavity surface 112.
Preferably, the area of the curved surface section of the fourth cavity surface 122 of the Y-direction moving die 120 is smaller than one third of the area of the curved surface section of the second cavity surface 112 of the fixed sub-die 110 after the rectangular twisted waveguide 900 in fig. 3 is extruded and twisted; i.e., the area of the fourth intermediate curved surface section 122b of the fourth cavity surface 122 is less than one third of the area of the second intermediate curved surface section 122b of the second cavity surface 112.
Further, in order to enhance and secure the structural rigidity of the twisted end of the Y-direction moving die 120, it is preferable that the third cavity surface 121 of the Y-direction moving die 120 be expanded outwardly in the planar section (i.e., the third rear planar section 121 c) of the rectangular twisted waveguide 900 in fig. 3, and extend into and fit under the planar section (i.e., the second rear planar section 112 c) of the second cavity surface 112 of the fixed sub-die 110 in the rectangular twisted waveguide 900 in fig. 3 after the Y-direction moving die 120 is fitted with the fixed sub-die 110.
Referring to fig. 7, fig. 7 is an enlarged perspective view of the Z-moving die of fig. 3, the view angle of fig. 7 being changed from that of fig. 3 in order to clearly illustrate one side of the molding surface thereof; the Z-direction moving die 130 is provided with a fifth cavity surface 131, and the fifth cavity surface 131 is matched with the other wide side 901 of the rectangular twisted waveguide 900 in fig. 1 before and after being twisted by extrusion.
Specifically, the fifth cavity surface 131 sequentially comprises a fifth front plane section 131a, a fifth middle curved surface section 131b and a fifth back plane section 131c, the connection between the fifth front plane section 131a and the fifth middle curved surface section 131b is in smooth transition, and the connection between the fifth middle curved surface section 131b and the fifth back plane section 131c is in smooth transition; and the fifth front plane segment 131a and the fifth rear plane segment 131c are spatially perpendicular to each other;
preferably, the width of the Z-direction moving die 130 before the rectangular twisted waveguide 900 in fig. 3 is extruded and twisted is equal to the width of the Y-direction moving die 120 after it is attached to the fixed sub-die 110 and before the rectangular twisted waveguide 900 is extruded and twisted.
Referring to fig. 8, fig. 8 is a perspective view of an embodiment of the rectangular twisted waveguide extrusion apparatus of the present invention; based on the rectangular twisted waveguide extrusion molding die, the invention further provides rectangular twisted waveguide extrusion molding equipment, the extrusion molding equipment comprises a vertical punch press frame 700 and a control cabinet 800, a Z-direction hydraulic cylinder 710 in control connection with the control cabinet 800 is vertically arranged at the upper part of the vertical punch press frame 700 along the Z-axis direction, a hydraulic power system and a numerical control programming system for controlling the motion of the Z-direction hydraulic cylinder 710 are arranged in the control cabinet 800, and the rectangular twisted waveguide extrusion molding die is arranged on a workbench 720 of the vertical punch press frame 700, and is the extrusion molding die 100 in any embodiment.
Referring to fig. 9, fig. 9 is an enlarged view of the components on the table top of fig. 8, specifically, a fixing base plate 610 is mounted on the table top 710, a die fixing plate 620 is fixed on the fixing base plate 610 by screws, the extrusion die 100 is located on the die fixing plate 620, and a rail pressing plate 640 is also fixed on the die fixing plate 620 by screws.
Referring to fig. 10 and 11 in combination, fig. 10 is an enlarged perspective view of the rail platen of fig. 9, and fig. 11 is a partial enlarged view of fig. 9 after removal of the Z-moving die; the rail pressure plate 640 is shaped like (f ā ng), and has a circumferential groove 641 provided at the lower edge of the inner side surface thereof for restricting five degrees of freedom of the fixed sub-die 110 and the Y-direction moving die 120 in the extrusion die 100 of fig. 2 except for movement in the Y-direction.
In the fixed sub-die 110 shown in fig. 4, a fixed sub-die boss 113 connected together for fitting into the recess 641 of the rail pressing plate 640 of fig. 11 is provided at the lower portions of the other three sides except for the side surface to be fitted with the Y-direction moving die 120.
Similarly, in the Y-direction moving die 120 shown in fig. 5, Y-direction moving die bosses 123 are provided at lower portions of both ends thereof, respectively, for fitting and engaging into the grooves 641 of the rail platen 640 of fig. 11 at the time of assembly.
As shown in fig. 2, the Z-moving die 130 of the extrusion molding die 100 has a mounting shank 133 fixed to the top surface thereof by screws for connecting the Z-moving die 130 to the lower end of the Z-hydraulic cylinder 710 of fig. 8 to move the Z-moving die 130 up and down when being assembled.
On the fixed bottom plate 610, a Y-direction hydraulic cylinder 510 is horizontally disposed along the Y-axis direction and is in control connection with the control cabinet 800 of fig. 8, and the front end of the Y-direction hydraulic cylinder 510 is connected with the outer side surface of the Y-direction moving die 120 via a corresponding connecting piece 520, so as to move the Y-direction moving die 120 in fig. 1 back and forth.
And an X-direction hydraulic cylinder 310 is horizontally disposed along the X-axis direction in control connection with the control cabinet 800 of fig. 8, and the X-direction hydraulic cylinder 310 is connected with the extrusion tool 200 of fig. 11 via a corresponding connection member 320 for moving the extrusion tool 200 left and right to extrude the rectangular torsion waveguide 900 of fig. 3 for torsion molding in the extrusion mold 100 of fig. 2.
The hydraulic power system and the numerical control programming system in the control cabinet 800 are also used for controlling the actions of the Y-direction hydraulic cylinder 510 and the X-direction hydraulic cylinder 310; the axes of the X-direction hydraulic cylinder 310, the Y-direction hydraulic cylinder 510 and the Z-direction hydraulic cylinder 710 are perpendicular to each other and intersect at a point.
If the axis of the X-direction hydraulic cylinder 310 is lower than the axis of the Y-direction hydraulic cylinder 510, an X-direction hydraulic cylinder fixing plate 630 may be fixed on the fixing base plate 610 by screws, and the X-direction hydraulic cylinder 310 may be mounted on the X-direction hydraulic cylinder fixing plate 630.
If the Y-direction hydraulic cylinder 510 is disposed such that the fixed bottom plate 610 extends more than the table surface 720 of fig. 8, it is preferable that a supporting frame 730 is mounted on the front side wall of the table surface 720 by bolts for supporting under the fixed bottom plate 610 extending from the table surface 720, so as to improve the stability of the Y-direction hydraulic cylinder 510 during operation.
Referring to fig. 12, fig. 12 is an enlarged perspective view of the pressing tool of fig. 9, the pressing tool 200 is composed of a ram 210 and a head 220 thereof, wherein the tail of the ram 210 is connected to the front end of an X-direction hydraulic cylinder 310 via a corresponding connector 320, wherein: the total length of the ejector rod 210 and the head 220 thereof is equal to the length of the rectangular twisted waveguide 900 in fig. 1 before extrusion, the width and the height of the ejector rod 210 are respectively equal to the width and the height of the rectangular twisted waveguide 900 in fig. 1 before extrusion, the length of the head 220 is equal to the length of the tail plane section (i.e. the end 901 plane section) of the rectangular twisted waveguide 900 in fig. 1 after extrusion, and the four edges of the front end of the head 220 are subjected to right-angled or rounded corners so as to facilitate the insertion of the tail of the rectangular twisted waveguide 900; preferably, the assembly gap between the head 220 and the rectangular twisted waveguide 900 is not more than 0.02mm, and the surface roughness of the outer surface of the head 220 is not more than Ra0.8, so as to ensure the surface quality of the inner cavity of the product.
Referring to fig. 13, fig. 13 is a perspective view of fig. 11 after the rectangular torsion waveguide is removed again; when the extrusion tool 200 extrudes the rectangular twisted waveguide 900 into the final position of the extrusion die 100 of fig. 9 under the driving of the X-direction hydraulic cylinder 310, the front end surface of the head 220 is flush with the connection between the first front plane section 111a and the first middle curved section 111b of the fixed sub-die 110 of fig. 4, or flush with the connection between the second front plane section 112a and the second middle curved section 112b of the Y-direction moving die 120 of fig. 5, or flush with the connection between the fifth front plane section 131a and the fifth middle curved section 131b of the Z-direction moving die 130 of fig. 7.
In the preferred embodiment of the rectangular twisted waveguide extrusion apparatus of the present invention, in order to further improve the structural rigidity of the extrusion mold 100 during mold closing, it is preferable that a first guide post 114 is disposed at the tail of the fixed sub-mold 110 along the Z axis direction, a second guide post 124 is disposed at the tail of the Y-direction moving mold 120 along the Z axis direction, and correspondingly, a first guide post hole 132 and a second guide post hole 134 respectively adapted to be disposed at the first guide post 114 and the second guide post 124 when the tail of the Z-direction moving mold 130 is disposed in a downward movement in fig. 7; meanwhile, a third guide post 135 is further disposed at the front end of the Z-moving die 130 in fig. 3 along the Z-axis direction, and correspondingly, a third guide post sleeve 621 adapted to be disposed on the third guide post 135 when the Z-moving die 130 moves downward is disposed on the die fixing plate 620 in fig. 13.
In order to improve the automation degree of the control cabinet 800, it is preferable that the tail of the Y-direction hydraulic cylinder 510 and the corresponding position of the fixed bottom plate 610 in fig. 9 are respectively provided with Y-position sensors (511 a and 511 b) associated with each other, and the Y-position sensors (511 a and 511 b) are in control connection with the control cabinet 800, so as to sense and feed back the stop position of the front end (or the Y-direction moving die 120) of the Y-direction hydraulic cylinder 510 when retracting.
Similarly, in the rear part of the X-direction hydraulic cylinder 310 and the corresponding position of the fixed bottom plate 610 in fig. 9, there are also associated X-position sensors (311 a and 311 b), respectively, and the X-position sensors (311 a and 311 b) are in control connection with the control cabinet 800, for sensing and feeding back the stop position of the front end of the X-direction hydraulic cylinder 310 (or the pressing tool 200) when retracting.
While the stopping position of the front end of the Z-direction hydraulic cylinder 710 (or the Z-direction movable die 130) in the drawing of fig. 9 can be fed back and controlled by the original Z-position sensors of the vertical punching machine frame 700 and the control cabinet 800 in fig. 8.
In addition, the rectangular twisted waveguide extrusion molding apparatus of the present invention may further include, as required, corresponding pressure sensors interposed between the contact surfaces of the fixed sub-mold half 110 and the Y-direction moving mold half 120, between the contact surfaces of the Z-direction moving mold half 130 and the fixed sub-mold half 110, between the contact surfaces of the Z-direction moving mold half 130 and the Y-direction moving mold half 120, and between the contact surfaces of the extrusion tool 200 and the rectangular twisted waveguide 900, and be in control connection with the control cabinet 800, for sensing and monitoring pressure changes near the respective contact surfaces during the extrusion molding process, so as to improve product defects and better improve product quality.
Based on the rectangular torsion waveguide tube extrusion molding die and extrusion molding equipment, the invention also provides an extrusion molding method of the rectangular torsion waveguide tube, which comprises the following steps:
step A, the Y-direction movable mold half 120 and the fixed sub-mold half 110 are combined together to form a first mold half assembly (namely, the state shown in FIG. 6), and the front surface and the rear surface of the first mold half assembly are clamped from the outer side surface of the fixed sub-mold half 110 and the outer side surface of the Y-direction movable mold half 120;
step B, placing a linear hollow metal square tube on the front half part (namely the left half part in FIG. 2) of the first die assembly, and sleeving one end of the hollow metal square tube on the head 220 of the extrusion tool 200 in FIG. 12;
step C, combining the Z-direction movable die 130 and the first die assembly to form a second die assembly (namely, the state shown in FIG. 2), and clamping the two sides of the second die assembly up and down from the common bottom surface of the fixed sub-die 110 and the Y-direction movable die 120 and the top surface of the Z-direction movable die 130;
step D, fixing the second die assembly on the workbench surface to prevent the second die assembly from moving left and right; extruding the hollow metal square tube to the rear end (i.e., the right end of fig. 2) of the second die assembly using an extruding tool 200;
step E, exiting the extrusion tool 200;
step F, loosening the clamping force to the upper and lower directions of the second die assembly, and removing the Z-direction moving die 130;
step G, releasing the clamping force in the front-rear direction of the first die assembly, removing the Y-moving die 120, and taking out the rectangular twisted waveguide 900 after extrusion twisting (i.e., the state shown in fig. 1).
Specifically, in step a, it is checked whether the fixed sub-petals 110 are located at the innermost side of the rail platen 640; and then, the control cabinet 800 is started, under the action of the hydraulic power system and the numerical control programming system, the front end of the Y-direction hydraulic oil cylinder 510 stretches out to push the Y-direction movable die 120 to be folded with the fixed sub-die 110 along the reverse direction of the Y axis to form a first die assembly, and a certain pressure is applied.
Specifically, in step B, a straight hollow metal square tube is placed in the front half of the first die assembly (i.e., the left half of fig. 2) before extrusion and torsion molding, and one end of the hollow metal square tube is fitted over the head 220 of the extrusion tool 200 of fig. 12.
Specifically, in step C, under the action of the hydraulic power system and the numerical control programming system, the front end of the Z-directional hydraulic cylinder 710 descends to push the Z-directional moving die 130 to fold with the first die assembly along the opposite direction of the Z-axis to form a second die assembly, and a certain pressure is applied.
Specifically, in step D, under the action of the hydraulic power system and the numerical control programming system, the front end of the X-direction hydraulic cylinder 310 extends, the hollow metal square tube is pushed by the extrusion tool 200 to enter the cavity of the extrusion mold 100 along the opposite direction of the X-axis for torsion molding, and a certain pressure is applied at the end of the stroke.
It should be noted that the pushing speed of the X-direction hydraulic cylinder 310 should be stable and uniform and should not be too fast, preferably, the pushing speed of the X-direction hydraulic cylinder 310 is not greater than 0.1m/min, so as to achieve both product quality and production efficiency; the pushing speed of the Y-direction hydraulic cylinder 510 and the Z-direction hydraulic cylinder 710 can be controlled to be 0.2-0.5 m/min, and the pushing speed is specifically selected according to the actual production requirement.
Specifically, in step E, under the action of the hydraulic power system and the digitally controlled programming system, the front end of the X-directional hydraulic cylinder 310 is retracted, and drives the head 220 of the extrusion tool 200 to exit along the X-axis direction and leave the tail end of the rectangular torsion waveguide 900 (i.e., the end 910 in fig. 1), until the control cabinet 800 stops when receiving the feedback signals from the X-position sensors (311 a and 311 b).
Specifically, in step F, under the action of the hydraulic power system and the numerical control programming system, the front end of the Z-directional hydraulic cylinder 710 is lifted, and drives the Z-directional moving die 130 to lift along the Z-axis direction and leave the first die assembly, until the Z-directional moving die is lifted to the height set by the control cabinet 800.
Specifically, in step G, under the action of the hydraulic power system and the numerical control programming system, the front end of the Y-directional hydraulic cylinder 510 is retracted, and drives the Y-directional movable mold 120 to move along the Y-axis direction and leave the fixed sub-mold 110 until the control cabinet 800 stops when receiving the feedback signals of the Y-position sensors (511 a and 511 b); at this time, the rectangular twisted waveguide 900 after the extrusion twisting (i.e., the state shown in fig. 1) can be taken out.
It should be understood that the foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical solution of the present invention, and it should be understood that the present invention can be added, substituted, changed or modified according to the above description by those skilled in the art within the spirit and principles of the present invention, for example, the hydraulic power system for controlling the actions of each hydraulic cylinder may also be disposed in the internal space of the vertical punching machine frame 700 and be in control connection with the external control cabinet 800, etc., and all such added, substituted, changed or modified technical solutions shall fall within the scope of the appended claims.
Claims (8)
1. An extrusion forming die of rectangle turn round waveguide pipe for through extruded mode shaping rectangle turn round waveguide pipe, its characterized in that: the extrusion forming die consists of a fixed sub-die, a Y-direction movable die and a Z-direction movable die; after the fixed sub-die, the Y-direction movable die and the Z-direction movable die are mutually attached, cavity surfaces of the rectangular twisted waveguide tube before and after being extruded and twisted are jointly formed in the fixed sub-die, the Y-direction movable die and the Z-direction movable die; wherein,
the fixed sub-die is provided with a first cavity surface and a second cavity surface, the first cavity surface is matched with one narrow side surface of the rectangular torsion waveguide tube before and after being extruded and twisted, the plane section of the first cavity surface is vertically intersected with the plane section of the second cavity surface before the rectangular torsion waveguide tube is extruded and twisted, and the plane section of the first cavity surface is vertically intersected with the plane section of the second cavity surface after the rectangular torsion waveguide tube is extruded and twisted; the first cavity surface sequentially comprises a first front plane section, a first middle curved surface section and a first back plane section, the junction between the first front plane section and the first middle curved surface section is in smooth transition, and the junction between the first middle curved surface section and the first back plane section is in smooth transition; and the first front plane section and the first rear plane section are spatially perpendicular to each other; the second cavity surface sequentially comprises a second front plane section, a second middle curved surface section and a second back plane section, the junction between the second front plane section and the second middle curved surface section is in smooth transition, and the junction between the second middle curved surface section and the second back plane section is in smooth transition; and the second front planar segment and the second rear planar segment are spatially perpendicular to each other;
the Y-direction movable die is provided with a third die cavity surface and a fourth die cavity surface, the third die cavity surface is matched with the other narrow side surface of the rectangular twisted waveguide before and after being extruded and twisted, and the plane section of the third die cavity surface is vertically intersected with the plane section of the fourth die cavity surface before the rectangular twisted waveguide is extruded and twisted;
after the Y-direction movable die and the fixed sub die are attached, the combined second cavity surface and fourth cavity surface are matched with one wide side surface of the rectangular twisted waveguide before and after being extruded and twisted; after the Y-direction movable die is attached to the fixed sub-die, the plane section of the third cavity surface of the Y-direction movable die, which is positioned after the rectangular twisted waveguide tube is extruded and twisted, is outwards expanded, and extends into and is attached to the lower part of the plane section of the second cavity surface of the fixed sub-die, which is positioned after the rectangular twisted waveguide tube is extruded and twisted;
and a fifth cavity surface is arranged on the Z-direction moving die, and the fifth cavity surface is matched with the other wide side surface in the rectangular torsion waveguide tube before and after being extruded and twisted.
2. The extrusion die for a rectangular twisted waveguide according to claim 1, wherein:
the third cavity surface sequentially comprises a third front plane section, a third middle curved surface section and a third back plane section, the joint between the third front plane section and the third middle curved surface section is in smooth transition, and the joint between the third middle curved surface section and the third back plane section is in smooth transition; and the third front plane section and the third rear plane section are spatially perpendicular to each other;
the fourth cavity surface consists of a fourth front plane section and a fourth middle curved surface section, and the joint between the fourth front plane section and the fourth middle curved surface section is in smooth transition.
3. The extrusion die for a rectangular twisted waveguide according to claim 1, wherein: the area of the plane section of the fourth cavity surface of the Y-direction movable die is the same as that of the plane section of the second cavity surface of the fixed sub-die before the rectangular torsion waveguide tube is extruded and twisted.
4. The extrusion die for a rectangular twisted waveguide according to claim 1, wherein: the area of the curved surface section of the fourth cavity surface of the Y-direction movable die is smaller than one third of the area of the curved surface section of the second cavity surface of the fixed sub-die after the rectangular torsion waveguide tube is extruded and twisted.
5. The extrusion die for a rectangular twisted waveguide according to claim 1, wherein: the fifth cavity surface sequentially comprises a fifth front plane section, a fifth middle curved surface section and a fifth back plane section, the junction between the fifth front plane section and the fifth middle curved surface section is in smooth transition, and the junction between the fifth middle curved surface section and the fifth back plane section is in smooth transition; and the fifth front planar segment and the fifth rear planar segment are spatially perpendicular to each other.
6. The extrusion die for a rectangular twisted waveguide according to claim 1, wherein: the width of the Z-direction movable die before the rectangular twisted waveguide tube is extruded and twisted is equal to the width of the combined body of the Y-direction movable die and the fixed sub-die after the Y-direction movable die is attached to the fixed sub-die.
7. An extrusion molding apparatus for rectangular twisted waveguides, characterized in that: the extrusion molding die for the rectangular torsion waveguide tube is characterized by comprising a vertical punching machine frame and a control cabinet, wherein a Z-direction hydraulic cylinder in control connection with the control cabinet is vertically arranged at the upper part of the vertical punching machine frame along the Z-axis direction, and an extrusion molding die for the rectangular torsion waveguide tube is arranged on the working table surface of the vertical punching machine frame; wherein,
the workbench surface is provided with a fixed bottom plate, a die fixed plate is fixed on the fixed bottom plate, a guide rail pressing plate is fixed on the die fixed plate, the guide rail pressing plate is -shaped, and a peripheral groove is formed in the lower edge of the inner side surface of the guide rail pressing plate; in the fixed sub-die, a fixed sub-die boss which is adaptively clamped into the groove is arranged at the lower parts of the other three sides except for the side surface which is attached to the Y-direction moving die; the lower parts of the two ends of the Y-direction movable mould lamella are respectively provided with a Y-direction movable mould lamella boss which is adapted to be clamped into the groove;
the top surface of the Z-direction movable die is fixed with a mounting handle which is connected to the lower end of the Z-direction hydraulic cylinder; a Y-direction hydraulic oil cylinder in control connection with the control cabinet is horizontally arranged on the fixed bottom plate along the Y-axis direction, and the front end of the Y-direction hydraulic oil cylinder is connected with the outer side surface of the Y-direction movable die through a corresponding connecting piece; and an X-direction hydraulic cylinder in control connection with the control cabinet is horizontally arranged along the X-axis direction, and the X-direction hydraulic cylinder is connected with an extrusion tool through a corresponding connecting piece.
8. A method for extrusion molding of a rectangular twisted waveguide, the rectangular twisted waveguide being produced by using the extrusion mold for rectangular twisted waveguide according to any one of claims 1 to 6, characterized in that the extrusion molding method comprises the steps of:
A. the Y-direction movable mould lamella and the fixed sub-mould lamella are combined together to form a first mould lamella assembly, and the front surface and the rear surface of the first mould lamella assembly are clamped from the outer side surface of the fixed sub-mould lamella and the outer side surface of the Y-direction movable mould lamella;
B. placing a linear hollow metal square tube on the front half part of the first die assembly, and sleeving one end of the hollow metal square tube on the head part of the extrusion tool;
C. combining the Z-direction movable die with the first die assembly to form a second die assembly, and clamping two sides of the second die assembly from the common bottom surface of the fixed sub-die and the Y-direction movable die and the top surface of the Z-direction movable die up and down;
D. fixing the second die assembly on a workbench surface, and extruding the hollow metal square tube to the rear end of the second die assembly by utilizing an extrusion tool;
E. withdrawing the extrusion tool;
F. loosening the clamping force to the upper and lower directions of the second die assembly, and removing the Z-direction movable die;
G. and releasing the clamping force in the front-rear direction of the first die assembly, removing the Y-direction moving die, and taking out the rectangular torsion waveguide tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811103715.4A CN109013736B (en) | 2018-09-21 | 2018-09-21 | Extrusion molding die and device for rectangular torsion waveguide tube and extrusion molding method |
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| CN201811103715.4A CN109013736B (en) | 2018-09-21 | 2018-09-21 | Extrusion molding die and device for rectangular torsion waveguide tube and extrusion molding method |
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| JPH06297032A (en) * | 1993-04-15 | 1994-10-25 | Ishikawajima Harima Heavy Ind Co Ltd | Method and device for extruding twisted body |
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