TWI597106B - Double-acting variable cross-section extrusion device and extrusion method - Google Patents

Description

Double-acting variable cross-section extrusion device and extrusion method

The invention relates to a variable cross-section extrusion device and an extrusion method, in particular to a double-acting variable-section extrusion device and a extrusion method with a double-acting extrusion die.

Extrusion refers to the formation of a material by extrusion. The principle is that the extruded material/extrusion is heated and pressurized at a moderate speed and extruded into the mold at a constant speed to produce a product of the desired shape, size and physical properties. Suitable for the processing of easily shaped metal and plastic finished products. Aluminum extrusion is closely related to human life, from food and electronics to automotive industry and construction.

However, in the existing extrusion process, only extrusions of equal section can be produced, and if extrusions of unequal cross-section are required, multiple machining operations are required. For example, a uniform cross-section profile extruded by an extrusion process and then complicated secondary forming and welding are required to obtain an irregularly varying cross section, resulting in an increase in man-hours and an increase in cost, and a loss of extrusion process. Good performance. Furthermore, the current variable cross-section extrusion technology cannot produce extruded parts of circular variable cross-section.

In view of this, it is therefore necessary to provide a double-acting variable-section extrusion device and an extrusion method to solve the aforementioned problems.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a double-acting variable-section extrusion apparatus and extrusion method having a double-acting extrusion die for manufacturing a variable-section extrusion.

In order to achieve the above object, the present invention provides a double-acting variable-section extrusion device, comprising: a holding barrel having an accommodating space for accommodating an extruded ingot; and a fixed extrusion die fixed to the Ingot barrel and includes an original a size cavity, the original size cavity communicates with the receiving space of the ingot barrel; a double-acting first extrusion die is disposed on one side of the fixed extrusion die, and includes a plurality of first modules, The first modules are respectively moved in a radial direction thereof to an open position or a closed position; and a pressing plunger is configured to move relative to the ingot barrel and press the ingot, wherein When the first modules are moved to the closed position, the first modules are formed with a first size cavity, and at this time, the pressing plunger causes the extruded ingot to pass through the original size cavity and then pass through The first size cavity flows out to form a first size extrusion; and when the first modules are moved to the open position, the first modules are not formed with the first size cavity, and At this time, the pressing plunger causes the extruded ingot to flow out only through the original size cavity to form an original size extrusion, wherein the first size cavity is smaller than the original size cavity, so that the first size is squeezed. The section of the profile is smaller than the section of the original size extrusion, and the original size extrusion Connected to the first dimension extrusion member, so that the original size of the extrusion member and the extrusion member first size combined into a variable cross-section extruded member.

The double-acting variable cross-section extrusion device of the invention has the following advantages: First, the breakthrough mold and process development, changing the traditional extrusion process can only produce the inherent mode of the same section profile. Second, it can be modularly installed in existing traditional extrusion equipment. Third, the cross-section profiles of different curvatures are obtained by matching each other, and the shape thereof may be an irregular shape such as a circle or a rectangle. 4. According to the specifications of the extrusion type device and the product size requirements, a plurality of double-acting extrusion die molds are matched with each other and the extrusion parts of the cross-section are changed.

The above and other objects, features, and advantages of the present invention will become more apparent from the accompanying drawings.

100‧‧‧Reactive variable cross-section extrusion device

100'‧‧‧Reaction variable cross-section extrusion device

100”‧‧‧Reactive variable cross-section extrusion device

102‧‧‧Extrusion

110‧‧‧Ingot barrel

112‧‧‧ accommodating space

120‧‧‧Fixed extrusion mould

120a‧‧‧Surface

122‧‧‧ original size cavity

130‧‧‧Reintegration first extrusion mould

130a‧‧‧ surface

132‧‧‧ first module

134‧‧‧ radial direction

136‧‧‧ first size cavity

136a‧‧‧First inner surface

140‧‧‧Reintegration first extrusion mould

140'‧‧‧Reintegration first extrusion mould

140"‧‧‧Reintegration first extrusion mould

140a‧‧‧ surface

142‧‧‧ first module

144‧‧‧ radial direction

146‧‧‧Second size cavity

146a‧‧‧Second inner surface

150‧‧‧Squeeze plunger

152‧‧‧Axial

160‧‧‧Wall

160a‧‧‧ surface

170‧‧‧Modular drive unit

190‧‧‧Variable section extrusion

190'‧‧‧Variable section extrusion

190”‧‧‧Variable section extrusion

190a‧‧‧First size extrusion

190b‧‧‧Second size extrusion

190z‧‧‧Original size extrusion

1 is a perspective view of a double-acting variable cross-section extrusion device according to a first embodiment of the present invention; 2 is a front view of a double-acting variable cross-section extrusion device according to a first embodiment of the present invention; FIG. 3 is a side view of a double-acting variable-section extrusion device according to a first embodiment of the present invention; A cross-sectional view of the double-acting variable-section extrusion device along the line AA of FIG. 3, showing step C; FIG. 5 is a cross-sectional view of the double-acting variable-section extrusion device along the line AA of FIG. Step A; FIG. 6 is a schematic cross-sectional view of the double-acting variable-section extrusion device along the line AA of FIG. 3, showing step B; FIG. 7 is a schematic cross-sectional view of the variable-section extruded member according to the first embodiment of the present invention. Figure 8 is a cross-sectional view showing another modified cross-section extruded member according to a first embodiment of the present invention; Figure 9 is a cross-sectional view showing another modified cross-sectional extruded member according to the first embodiment of the present invention; A front view of the double-acting variable cross-section extrusion device of the first embodiment, which shows that the original size cavity, the first and second size cavities are rounded; FIG. 11 is a first embodiment of the present invention. Front view of the double-acting variable cross-section extrusion device, showing the original size cavity, first The second dimension of the cavity is a square shape; FIG. 12 of the first embodiment of the present invention automated multiplex embodiment of variable cross-section of the extrusion apparatus A cross-sectional view showing that the double-acting variable-section extrusion device further includes a vehicle wall and a plurality of module driving units; and FIG. 13 is a schematic cross-sectional view of the double-acting variable-section extrusion device according to the second embodiment of the present invention. Figure 14 is a cross-sectional view showing a double-acting variable cross-section extrusion apparatus according to a second embodiment of the present invention, showing step B; Figure 15 is a double-acting variable cross-section extrusion type according to a third embodiment of the present invention. Schematic diagram of the device.

Referring to FIGS. 1 through 4, there is shown a double-acting variable cross-section extrusion apparatus 100 according to a first embodiment of the present invention. The double-acting variable cross-section extrusion device 100 includes a container 110, a fixed extrusion die 120, a double-acting first extrusion die 130, a double-acting second extrusion die 140, and A squeeze plunger (150). The sump 110 has an accommodating space 112 for accommodating a billet 102. The material of the ingot 102 may be a metal material such as iron, aluminum, magnesium or titanium or an alloy material thereof. The fixed extrusion die 120 is fixed to the ingot barrel 110 and includes an original size cavity 122 that communicates with the receiving space 112 of the ingot barrel 110. The pressing plunger 150 is for moving relative to the ingot barrel 110 and pressing the ingot 102 in an axial direction 152 (i.e., the direction of extrusion). The pressing plunger 150 can be moved back and forth by being driven by a hydraulic power source (not shown), thereby causing the pressing plunger 150 to press or not squeeze the ingot 102.

The material of the fixed extrusion die 120, the double-acting first extrusion die 130 and the double-acting second extrusion die 140 may be die steel, carbon steel, stainless steel or other metal materials and non-metal materials, The mold steel in the middle refers to a steel grade that can be used to manufacture molds such as cold stamping die, hot forging die or die casting die.

The double-acting first extrusion die 130 is disposed on one side of the fixed extrusion die 120 and includes a plurality of first modules 132 for moving to a radial direction 134 thereof, respectively. Open position (moving outward) or a closed position (moving inward). The double-acting second extrusion die 140 is disposed on one side of the double-acting first extrusion die 130 and includes a plurality of second modules 142 for respectively along a radial direction 144 thereof. Move to an open position (moving outward) or a closed position (moving inward). In this embodiment, the first and second extrusion molds 130 and 140 of the double-acting embodiment are illustrated by including four modules as an example. However, the double-acting first and second extrusion dies 130, 140 include four modules that are not intended to limit the invention. In other embodiments, the double-acting first and second extrusion dies 130, 140 are visible. Design requirements include two, three or more modules. Regardless of the number of modules of the double-acting first and second extrusion dies 130, 140 of two, three, four or more modules, they can be independently operated and can be programmed. The shapes of the first modules 132 may be the same or different from each other, and the shapes of the second modules 142 may be selected to be the same or different.

In this embodiment, referring to FIG. 5, the first and second size cavities 136, 146 may have first and second inner surfaces 136a, 146a, respectively, between the first inner surface 136a and the axial direction 152. The angle between the second inner surface 146a and the axial direction 152 is a second angle, and the first angle and the second angle are not equal to 0 degrees.

Referring to FIG. 5 again, in step A: when the first and second modules 132 and 142 are moved to the closed position, the first and second modules 132 and 142 are respectively formed with the first and second The dimensional cavities 136, 146 (i.e., the closed profiles of the first and second modules 132, 142 have first and second dimensional cavities 136, 146, respectively). At this time, the pressing plunger 150 presses the extrusion 102 to cause the extrusion 102 to pass through the original size cavity 122 and the first size cavity 136 and then flow out through the second size cavity 146 to A second size extrusion 190b is formed. The second size cavity 146 must be smaller than the first size cavity 136 And the first size cavity 136 must be smaller than the original size cavity 122.

Referring to FIG. 6, in step B: when the second modules 142 are moved to the open position, and the first modules 132 are moved to the closed position, the second modules 142 are not formed with the second size. The first module 132 is still formed with the first size cavity 136. At this time, the pressing plunger 150 presses the ingot 102 to pass the ingot 102 first through the original size cavity 122 and then through the first size cavity 136 to form a first size extrusion. 190a. The second size cavity 146 is smaller than the first size cavity 136 such that the second size extrusion 190b has a smaller cross section than the first size extrusion 190a.

Referring to FIG. 4 again, in step C: when the first and second modules 132 and 142 are moved to the open position, the first and second modules 132 and 142 are not respectively formed with the first and The second size cavities 136, 146. At this time, the pressing plunger 150 presses the ingot 102 to cause the ingot 102 to flow out only through the original size cavity 122 to form an original size extrusion 190z. The first size cavity 136 is smaller than the original size cavity 122 such that the first size extrusion 190a has a smaller cross section than the original size extrusion 190z.

Referring to FIG. 7, in an embodiment, if step B and step C are sequentially performed, the original size extrusion 190z is coupled to the first size extrusion 190a, so that the original size extrusion 190z and the One size extrusion 190a is combined into a variable section extrusion 190.

Please refer to FIG. 8. In another embodiment, if step A, step B, and step C are sequentially performed, the second size extrusion 190b, the first size extrusion 190a, and the original size extrusion The 190z is sequentially connected such that the second size extrusion 190b, the first size extrusion 190a and the original size extrusion 190z are combined into another variable section extrusion 190'.

Referring to FIG. 9, in another embodiment, if step A, step B, step C, step B, and step A are sequentially performed, the second size extrusion 190b, the first size extrusion 190a, The original size extrusion 190z, the first The first size extrusion 190a and the second size extrusion 190b are sequentially connected, such that the second size extrusion 190b, the first size extrusion 190a, the original size extrusion 190z, the first The size extrusion 190a and the second size extrusion 190b are combined into a further variable cross-section extrusion 190".

Referring to FIG. 10 and FIG. 8 , the original size extrusion 190 z , the first and second size extrusions 190 a , 190 b respectively correspond to the original size cavity 122 , the first and second size cavity 136, 146 outside shape. In this embodiment, the original size cavity 122, the first and second size cavities 136, 146 are circular in shape. Referring to FIG. 11 , in another embodiment, the original size cavity 122 and the first and second size cavity 136 , 146 may be square. Therefore, the original size cavity 122, the first and second size cavities 136, 146 may be selected from the group consisting of a circle, a square, an ellipse, a diamond, and a polygon.

Referring to FIG. 12 , in the embodiment, the double-acting variable-section extrusion device 100 further includes a vehicle wall 160 and a plurality of module driving units 170 . The vehicle wall 160 is for restricting movement of the first actuating first and second extrusion dies 130, 140 along the axial direction 152. The module driving unit 170 (for example, a hydraulic servo driving unit or a lead screw electronically controlled servo driving unit) is configured to respectively drive the first and second modules 132 of the double-acting first and second extrusion molds 130, 140. , 142 moves in its radial direction to the open position or the closed position. In order to avoid excessive friction between the fixed extrusion die 120, the double-acting first and second extrusion die 130, 140 and the vehicle wall 160, the fixed extrusion die 120, the double-acting The surfaces 120a, 130a, 140a, 160a of the first and second extrusion dies 130, 140 and the vehicle wall 160 may be provided with a smooth polished surface.

In addition, the double-acting variable cross-section extrusion device 100 can also be combined with a double-acting mechanism (not shown) having a mandrel to form the variable-section extruded member into a variable-section hollow extruded member.

Please refer to FIG. 13 and FIG. 14 , which shows a second implementation of the present invention. For example, a double-acting variable cross-section extrusion device. The double-acting variable-section extrusion device 100' of the second embodiment is substantially similar to the double-acting variable-section extrusion device 100 of the first embodiment, and the same elements are designated by the same reference numerals. The double-acting variable-section extrusion device 100' of the second embodiment is different from the double-acting variable-section extrusion device 100 of the first embodiment in that the double-acting variable-section extrusion device 100' does not include a double-action The second extrusion die 140 is formed.

The double-acting variable cross-section extrusion method of the present invention comprises the following steps: Referring to FIG. 13, in step B, the first modules 132 are moved to the closed position, and the first modules 132 are formed with a first size mode. The hole 136, and the extrusion 102 is extruded such that the extrusion 102 first passes through the original size cavity 122 and then flows out through the first size cavity 136 to form a first size extrusion 190a. Referring to FIG. 14, in step A, the first modules 132 are moved to the open position, so that the first modules 132 are not formed with the first size cavity 136, and the extrusion 102 is pressed to make the extrusion. The ingot 102 flows out only through the original size cavity 122 to form an original size extrusion 190z, wherein the first size cavity 136 is smaller than the original size cavity 122, and the first size extrusion 190a is cross-sectioned. A section smaller than the original size extrusion 190z, and the original size extrusion 190z is coupled to the first size extrusion 190a, and the original size extrusion 190z and the first size extrusion 190a are combined into a variable cross section. Extruded piece 190.

Please refer to FIG. 15, which shows a double acting variable cross-section extrusion apparatus according to a third embodiment of the present invention. The double-acting variable-section extrusion device 100" of the third embodiment is substantially similar to the double-acting variable-section extrusion device 100 of the first embodiment, and the same elements are denoted by the same reference numerals. The third embodiment is a double-acting The variable cross-section extrusion device 100" is different from the double-acting variable cross-section extrusion device 100 of the first embodiment in that the double-acting variable-section extrusion device 100" includes a plurality of double-acting second extrusion die 140 (eg, the double-acting second extrusion molds 140', 140"), the plurality of double-acting second extrusion molds 140 are sequentially disposed along one of the axial directions 152 of the extrusion plunger 150, and the Recombination second extrusion die 140 The second size cavities 146 (e.g., the second size cavities 146', 146") are sequentially reduced along the axial direction 152 of the squeeze plunger.

The double-acting variable cross-section extrusion device of the invention has the following advantages: First, the breakthrough mold and process development, changing the traditional extrusion process can only produce the inherent mode of the same section profile. Second, it can be modularly installed in existing traditional extrusion equipment. Third, the cross-section profiles of different curvatures are obtained by matching each other, and the shape thereof may be an irregular shape such as a circle or a rectangle. 4. According to the specifications of the extrusion type device and the product size requirements, a plurality of double-acting extrusion die molds are matched with each other and the extrusion parts of the cross-section are changed.

In the above, it is merely described that the present invention is an embodiment or an embodiment of the technical means for solving the problem, and is not intended to limit the scope of implementation of the present invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

100‧‧‧Reactive variable cross-section extrusion device

102‧‧‧Extrusion

110‧‧‧Ingot barrel

112‧‧‧ accommodating space

120‧‧‧Fixed extrusion mould

122‧‧‧ original size cavity

130‧‧‧Reintegration first extrusion mould

132‧‧‧ first module

140‧‧‧Rehabilitation second extrusion mould

142‧‧‧ second module

150‧‧‧Squeeze plunger

152‧‧‧Axial

190a‧‧‧First size extrusion

190b‧‧‧Second size extrusion

Claims (8)

A double-acting variable-section extrusion device comprises: an ingot barrel having an accommodation space for accommodating an extruded ingot; a fixed extrusion mold fixed to the ingot barrel and including an original a size cavity, the original size cavity communicates with the receiving space of the ingot barrel; a double-acting first extrusion die is disposed on one side of the fixed extrusion die, and includes a plurality of first modules, The first modules are respectively moved in a radial direction thereof to an open position or a closed position; and a pressing plunger is configured to move relative to the ingot barrel and press the ingot, wherein When the first modules are moved to the closed position, the first modules are formed with a first size cavity, and at this time, the pressing plunger causes the extruded ingot to pass through the original size cavity and then pass through The first size cavity flows out to form a first size extrusion; when the first modules are moved to the open position, the first modules are not formed with the first size cavity, and the When the plunger is squeezed, the extruded ingot flows out only through the original size cavity to form an original The indented part, wherein the first size cavity is smaller than the original size cavity, the cross section of the first size extrusion is smaller than the cross section of the original size extrusion, and the original size extrusion is connected to the first a size extrusion member, the original size extrusion member and the first size extrusion member are combined into a variable cross section extrusion; the double acting variable cross section extrusion device further comprises at least one double acting second extrusion type a mold disposed on one side of the double-acting first extrusion mold and including a plurality of second modules for respectively moving in a radial direction thereof to an open position or a closed position; When the first and second modules are moved to the closed position, the second modules are also formed with a second size cavity, and at this time, the pressing plunger passes the extruded ingot through the original size mode. a hole and the first size cavity and flow out through the second size cavity to form a second size extrusion, The second size cavity is smaller than the first size cavity, such that the second size extrusion has a smaller cross section than the first size extrusion, and the second size extrusion is connected to the first size The extrusion member combines the original size extrusion, the first size extrusion and the second size extrusion into another variable cross section extrusion. The double-acting variable-section extrusion device according to claim 1, wherein when the second modules are moved to the open position, and the first modules are moved to the closed position, the second modules are The second size cavity is not formed, and the first module is still formed with the first size cavity, and at this time, the extrusion plunger causes the extrusion to pass through the original size cavity and then pass the first Dimensions die out to form the first size extrusion. The double-acting variable-section extrusion device according to claim 2, wherein when the first and second modules are moved to the open position, the first and second modules are not separately formed. The first and second size cavities, and at this point the squeeze plunger causes the extrudate to still flow out only through the original size cavity to form the original size extrusion. The double-acting variable cross-section extrusion device according to claim 1, wherein the original size extrusion, the first and second size extrusions respectively correspond to the original size cavity, the first And forming a second size cavity, and the original size cavity, the first and second size cavity shapes are selected from the group consisting of a circle, an ellipse, a square, a diamond, and a polygon. The double-acting variable-section extrusion device according to the first aspect of the invention, wherein the at least one double-acting second extrusion die is a plurality of double-acting second extrusion die, and the double-compression second extrusion The molds are arranged in the axial direction along one of the extrusion plungers, and the second size mold pockets of the double-acting second extrusion molds are sequentially changed along the axial direction of the extrusion plunger small. The double-acting variable cross-section extrusion device according to claim 1, wherein the fixed extrusion die, the double-acting first extrusion die, and the surface of the double-acting second extrusion die are mutually They all have a smooth polished finish. The double-acting variable-section extrusion device according to claim 1, wherein the extrusion plunger presses the extrusion in an axial direction, and the first and second dimensional cavities respectively have a first a second inner surface, the angle between the first inner surface and the axial direction is a first angle, the angle between the second inner surface and the axial direction is a second angle, and the first angle and the second angle None is equal to 0 degrees. A double-acting variable cross-section extrusion method comprising the steps of: providing a fixed extrusion die comprising an original size die; providing a double-acting first extrusion die comprising a plurality of first modules, The first modules are respectively moved to an open position or a closed position along the radial direction thereof; the first modules are moved to the closed position, the first modules are formed with a first size cavity, and the first module is formed Pressing an ingot to pass the original size cavity first and then passing through the first size cavity to flow out to form a first size extrusion; moving the first modules to the open position, so that The first module is not formed with the first size cavity, and the extrusion is extruded to cause the extrusion to flow out only through the original size cavity to form an original size extrusion, wherein the first size die The hole is smaller than the original size cavity, so that the cross section of the first size extrusion is smaller than the cross section of the original size extrusion piece, and the original size extrusion piece is connected to the first size extrusion piece, so that the original size is squeezed The profile and the first size extrusion are combined into a variable cross section Providing at least one double-acting second extrusion die, comprising a plurality of second modules for respectively moving in a radial direction thereof to an open position or a closed position; and The first module and the second module are moved to the closed position, so that the second modules are also formed with a second size cavity, and the extrusion is extruded to pass the extrusion through the original size cavity and the first size die. And passing through the second size cavity to form a second size extrusion, wherein the The second size cavity is smaller than the first size cavity, such that the second size extrusion has a section smaller than the first size extrusion, and the second size extrusion is connected to the original size extrusion or The first size extrusion member combines the original size extrusion, the first size extrusion and the second size extrusion into another variable cross section extrusion.