TW201718223A - Variable cross section extrusion device and extrusion method including a billet receiving bucket, a fixed extrusion mold, an extrusion male mold, a reciprocating extrusion mold, and an extrusion rod - Google Patents

Abstract

A variable cross section extrusion device includes a billet receiving bucket, the fixed extrusion mold, an extrusion male mold, a reciprocating extrusion mold, and an extrusion rod. The billet receiving bucket receives billets. The fixed extrusion mold is secured to the billet receiving bucket and includes an extrusion female mold that has a cavity. The cavity communicates the billet receiving bucket. The extrusion male mold is secured to the extrusion female mold. At least one oblique channel is formed between the extrusion male mold and the extrusion female mold, and the oblique channel has an oblique direction. The reciprocating extrusion mold moves relative to the fixed extrusion mold, and includes at least one forming module. The forming module is disposed in the oblique channel and has a head part and a tail part. The head part goes into the cavity and moves to a predetermined position along the oblique direction to change an outlet area of the cavity. The extrusion rod extrudes the billets along an extrusion direction.

Description

Variable section extrusion device and extrusion method

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

In view of this, it is therefore necessary to provide a variable cross-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 variable cross-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 variable cross-section extrusion device comprising: an ingot barrel having an accommodating space for accommodating an extruded ingot; and a fixed extrusion die fixed to the ingot barrel And including: a squeeze type master mold, including a cavity, the cavity is connected to the accommodation space of the ingot barrel; and an extrusion type a male mold fixed to the extruded master mold, wherein at least one oblique passage is formed between the extruded male mold and the extruded female mold, and the oblique passage has an oblique direction; a double acting extrusion mold For moving relative to the fixed extrusion die, and comprising: at least one forming module disposed in the oblique channel and having a head and a tail portion, wherein the head is configured to extend into the a cavity, and moving in the oblique direction to a predetermined position to change an exit area of the cavity; and a pressing rod for moving relative to the ingot barrel and pressing the extrusion direction The ingot is extruded.

The 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 profile profile. Second, the mechanism of the existing extrusion machine can be combined, and the actuation mechanism of the fixed extrusion die and the double-action extrusion die of the invention is simple, and the mold manufacturing cost can be saved. 3. According to the specifications and product size requirements of the extrusion device, the double-acting extrusion die and/or the piercing rod of the present invention are matched with each other and the extrusion product with a large cross-section change.

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

100‧‧‧Variable section extrusion device

102‧‧‧Extrusion

110‧‧‧Ingot barrel

112‧‧‧ accommodating space

120‧‧‧Fixed extrusion mould

121‧‧‧Squeezing master

122‧‧‧ cavity

122a‧‧‧central location

122b‧‧‧Edge position

123‧‧‧Extruded male model

124‧‧‧ diagonal channel

125‧‧‧ oblique direction

126‧‧‧radial channel

127‧‧‧ Radial

128‧‧‧Drainage channel

129‧‧‧Limited

130‧‧‧Multi-action extrusion die

132‧‧‧Forming module

134‧‧‧ head

134a‧‧‧First section

134b‧‧‧Second section

136‧‧‧ tail

142‧‧‧Promoting modules

138‧‧‧ first slope

140‧‧‧Smooth contact surface

144‧‧‧ head

146‧‧‧ tail

148‧‧‧second slope

150‧‧‧Extrusion rod

152‧‧‧Squeeze direction

160‧‧‧through the heart

162‧‧‧Linear sliding platform

164‧‧‧Servo motor

190‧‧‧Variable section extrusion

190'‧‧‧Another variable cross-section extrusion

190"‧‧‧ another variable cross-section extrusion

190a‧‧‧Dimensional extruded parts

190b‧‧‧Fixed size extrusions

190c‧‧‧Another variant size extrusion

190d‧‧‧Another fixed size extrusion

200‧‧‧Variable section extrusion device

290a‧‧‧Small size extrusion

290‧‧‧Variable section extrusion

A1‧‧‧first size export area

A2‧‧‧Second size export area

D1‧‧‧Down

D2, D3‧‧‧ OD

S210~S230‧‧‧Steps

1 is a front view of a variable cross-section extrusion device according to a first embodiment of the present invention; and FIG. 2a is a cross-sectional view of the variable cross-section extrusion device taken along line AA of FIG. Figure 2b is a cross-sectional view of the variable cross-section extrusion device taken along line AA of Figure 1, showing the head of a forming module at a second predetermined position; Figure 3 is a first embodiment of the present invention A schematic cross-sectional view of a head of a forming module and a cavity; 4 is a cross-sectional view showing a molding module and a pushing module according to a first embodiment of the present invention; and FIG. 5 is a cross-sectional view showing a head portion and a cavity of a molding module according to a first embodiment of the present invention. FIG. 6 is a cross-sectional view showing a head portion and a cavity of a molding module according to a first embodiment of the present invention, which is shown to form a fixed size extrusion; FIG. 7 is the first embodiment of the present invention. A cross-sectional view of a head of a forming module and a cavity of an embodiment, which is shown to form another variable size extrusion; FIG. 8 is a head of the forming module and a cavity of the first embodiment of the present invention. FIG. 9 is a cross-sectional view showing another fixed-size extruded member according to another embodiment of the present invention; FIG. 10 is another schematic view of another embodiment of the present invention; FIG. 11 is a schematic cross-sectional view showing a head portion and a cavity of a forming module according to a first embodiment of the present invention, showing an inner diameter and an outer diameter of a deformed section; FIG. The variable cross-section extrusion type of the second embodiment of the present invention FIG. 13 is a flow chart of a variable cross-sectional extrusion method according to a second embodiment of the present invention; and FIG. 14 is a cross-sectional view showing a head portion and a cavity of a molding module according to a second embodiment of the present invention. It is shown to form a variable size extrusion.

Referring to Figures 1, 2a and 2b, a variable cross-section extrusion apparatus 100 according to a first embodiment of the present invention is shown. The variable cross-section extrusion device 100 includes a container 110, a fixed extrusion die 120, a double-action extrusion die 130, a mandrel 160 and a squeeze bar (Stem). 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.

Referring to FIG. 2a, the squeeze rod 150 is moved relative to the pot drum 110, and the extrusion 102 is pressed in a pressing direction 152 (ie, axial direction). For example, the squeeze rod 150 can be moved back and forth by being driven by a hydraulic power source (not shown), so that the squeeze rod 150 can be pressed or not pressed. The penetrating rod 160 is also disposed in the ingot barrel 110. For example, the penetrating rod 160 can be inserted into the double-action extrusion die 130 by being driven by another hydraulic power source (not shown) to move to an appropriate position. The squeeze rod 150 and the penetrating rod 160 can be individually operated individually.

The material of the fixed extrusion die 120 and the double-action extrusion die 130 may be die steel, carbon steel, stainless steel or other metal materials and non-metal materials, and the above-mentioned die steel refers to a cold die and heat. Steel grades for molds such as forging dies or die-casting dies.

The fixed extrusion die 120 is fixed to the ingot barrel 110 and includes a female die 121 and a male die 123. The extruded master mold includes a cavity 122 that communicates with the receiving space 112 of the tablet drum 110. The extruded male mold 123 is fixed to the extruded female mold 121, wherein the extruded male mold 123 and the extruded female mold 121 form at least one oblique passage 124 (for example, two oblique passages 124), and The oblique channel 124 has an oblique direction 125. The extruded male mold 123 further includes a radial passage 126 and a discharge passage 128. The radial passage 126 has a radial direction 127. The discharge passage 128 communicates with the cavity 122.

The double-action extrusion die 130 is used for the opposite extrusion type The mold 120 is moved and includes at least one forming module 132. The forming die 132 is disposed in the oblique channel 124 and has a head 134 and a tail 136. The head 134 is configured to extend into the cavity 122 and move in the oblique direction 125 to a predetermined position to change the exit area of the cavity 122. In the present embodiment, the double-action extrusion die 130 includes two forming modules 132, and the forming modules on the left and right sides shown in FIG. 2 can be synchronized or asynchronously operated. In another embodiment, the double-action extrusion die 130 may include only one forming module 132, and the exit area of the cavity 122 may be changed.

Referring to FIG. 3, when the head 134 of the forming module 132 is in a first predetermined position, the head 134 of the forming module 132 extending into the cavity 122 has a first cross-section 134a for the cavity. 122 has a first size exit area A1; and, when the head 134 of the forming module 132 is in a second predetermined position, the head 134 of the forming module 132 that extends into the cavity 122 has a second Section 134b provides the cavity 122 with a second size exit area A2.

In this embodiment, the shape of the cavity 122 of the extrusion die 121 may be rectangular, and the first and second sections 134a, 134b of the head 134 of the forming module 132 extending into the cavity 122 are also It is a rectangle. The extruded female mold 121 can further include a limiting portion 129 (shown in FIG. 2) for restricting the head portion 134 of the forming module 132 from reaching the farthest position in the cavity 122.

Referring to FIG. 2 a , the double-action extrusion die 130 further includes a pushing module 142 for extending into the radial passage 126 and having a head 144 and a tail 146 . The pushing module 142 . The head 144 is used to urge the tail 136 of the forming module 132 along the radial direction 127.

Referring to FIG. 4 and FIG. 2a, the tail portion 136 of the forming module 132 includes a first slope 138. The head 144 of the pushing module 142 includes a second inclined surface 148 that is in contact with and aligned with the first inclined surface 138, and the first and second inclined surfaces 138, 148 are along the first and second inclined surfaces 138. , a smooth contact surface 140 between 148 and relatively moved. In this embodiment, the first Both the beveled surface 138 and the second beveled surface 148 may have an angle of 45 degrees with the radial direction 127. However, 45 degrees is not intended to limit the invention, and the included angle may be other angle values.

Referring to FIG. 2a again, the variable cross-section extrusion device 100 further includes a sliding platform (such as a linear sliding platform 162); and a driver (such as a servo motor 164) for driving the sliding platform 162 to pull the pushing module 142. The forming module 132 is further pushed.

Referring to FIG. 5, in step A: when the head 134 of the shaping module 132 is moved from a first predetermined position (shown in FIG. 2a) to a second predetermined position (shown in FIG. 2b) during a first time period. And the cavity 122 has a variable-size exit area gradually changed from a first-size outlet area A1 to a second-size outlet area A2 during the first period of time, whereby the squeeze rod 150 is squeezed in the first period of time. The extruded ingot 102 is pressed to allow the extruded ingot 102 to flow out through the variable size exit area of the cavity 122 to form a variable size extrusion 190a. For example, the pressing rod 150 is pressed down at a constant speed, and the servo motor 164 drives the linear sliding platform 162 to pull the pushing module 142 to retreat to both sides, thereby moving the forming module 132 to the lower left and the lower right respectively. The thickness of the sized extrusion 190a (in the opposite direction of the extrusion direction 152) is gradually increased.

Referring to FIG. 6, in step B: when the head 134 of the forming module 132 moves to the second predetermined position (shown in FIG. 2b) for a second period of time, the cavity is closed during the second period. 122 has the second size outlet area A2, whereby the extrusion rod 150 presses the extrusion 102 during the second time period, and the extrusion 102 passes out through the second size outlet area A2 of the cavity 122. To form a fixed size extrusion 190b. For example, the extrusion rod 150 is pressed downward at a constant speed, and the pushing module 142 and the forming module 132 are not actuated to maintain the thickness of the fixed size extrusion 190b (in the opposite direction of the pressing direction 152).

Referring to FIG. 7, in step C: when the head 134 of the shaping module 132 is moved by the second predetermined position (shown in FIG. 2b) to a third time period. In the first predetermined position (shown in FIG. 2a), the cavity 122 has another variable size exit area that gradually changes from the second size exit area A2 to the first size exit area A1 during the third time period. Thereby, the pressing rod 150 presses the ingot 102 in the third period of time, and the ingot 102 flows out through another variable size outlet area of the cavity 122 to form another variable size extrusion 190c. . For example, the pressing rod 150 is pressed downward at a constant speed, and the servo motor 164 drives the linear sliding platform 162 to pull the pushing module 142 to retreat to both sides, thereby moving the forming module 132 to the upper right and the upper left respectively. The thickness of the other sized extrusion 190c (in the opposite direction of the extrusion direction 152) is gradually reduced.

Referring to FIG. 8, in step D: when the head 134 of the shaping module 132 moves to the first predetermined position (shown in FIG. 2a) and remains stationary for a fourth period of time, the cavity is in the fourth period. 122 has the first size outlet area A1, whereby the extrusion rod 150 presses the extrusion 102 during the fourth time period, and the extrusion 102 passes out through the first size outlet area A1 of the cavity 122. To form another fixed size extrusion 190d. For example, the pressing rod 150 is pressed downward at a constant speed, and the pushing module 142 and the forming module 132 are not actuated to maintain the thickness of the other fixed-size extruded piece 190d (in the opposite direction of the pressing direction 152). fixed.

In one embodiment, if only step A is performed, the first sizing extrusion 190a is a variable cross-section extrusion 190, as shown in FIG.

In another embodiment, if the step A and the step B are performed in sequence, the first size extrusion 190a and the first size extrusion 190b are sequentially connected to be combined into another variable section extrusion. 190', as shown in Figure 9.

In another embodiment, if the step A, the step B, the step C and the step D are performed in sequence, the first size extrusion 190a, the first size extrusion 190b, and the second size extrusion The piece 190c and the second size extrusion 190d are sequentially connected to be combined into another variable section extrusion 190", as shown in FIG.

Referring to FIG. 11 and FIG. 2, the penetrating rod 160 extends into the cavity. The central position 122a of the 122 is used to make the variable cross-section extrusion 190 into a variable-section hollow extrusion and determine the inner diameter D1 of the variable-section hollow extrusion. The head 134 of the forming module 132 extends into the edge position 122b of the cavity 122 and extends into the head portion 134 of the forming module 132 in the cavity 122 for controlling the variable section extrusion 190. Outer diameter D2, D3.

The invention moves by the timing of the extrusion rod 150, the penetrating rod 160 and the forming module 132 of the double-action extrusion die 130 to control the shape characteristics of the hollow extruded part, thereby achieving the purpose of manufacturing the variable-section extruded part. .

Referring to Figure 12, there is shown a variable cross-section extrusion apparatus in accordance with a second embodiment of the present invention. The variable cross-section extrusion device 200 of the second embodiment is substantially similar to the variable cross-section extrusion device 100 of the first embodiment, and the same elements are designated by the same reference numerals. The second difference from the first embodiment is that the variable cross-section extrusion device 200 of the second embodiment does not include a penetrating rod. Referring to FIG. 13 and FIG. 12, the variable cross-section extrusion method of the second embodiment of the present invention comprises the following steps:

In step S210, a variable-section extrusion device 200 is provided, which includes an ingot barrel 110, a fixed extrusion die 120, and a double-action extrusion die 130, wherein the ingot barrel 110 has a receiving space. 112. The fixed extrusion die 120 includes an extrusion die 121 and an extrusion die 123. The extrusion die 121 includes a cavity 122 that communicates with the receiving space of the tablet 110. 112, an oblique channel 124 is formed between the extruded male die 123 and the extruded female die 121. The double-action extrusion die 130 includes a forming module 132, and the forming module 132 is disposed on the oblique channel 124. There is a head 134 inside.

In step S220, an ingot 102 is placed in the receiving space 112 of the ingot barrel 110.

In step S230, the ingot 102 is pressed in a period of time, and the ingot 102 is flowed out through a variable-size exit area of the cavity 122 to form a variable-size extrusion 290a, that is, the variable cross-section. The extrusion 290, as shown in FIG. 14, wherein when the head 134 of the forming module 132 is moved from a first predetermined position to a second predetermined position during the period, then during the period The cavity 122 has the variable size exit area which gradually changes from a first size exit area A1 to a second size exit area A2. Since the variable cross-section extrusion device 200 does not include a feedthrough rod, the variable cross-section extrusion 290 is a solid cross-section extruded section.

The present invention achieves the purpose of manufacturing a variable cross-section extrusion by controlling the timing of the extrusion bar 150 and the forming module 132 of the double-action extrusion die 130 to control the shape characteristics of the solid extrusion.

The 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 profile profile. Second, the mechanism of the existing extrusion machine can be combined, and the actuation mechanism of the fixed extrusion die and the double-action extrusion die of the invention is simple, and the mold manufacturing cost can be saved. 3. According to the specifications and product size requirements of the extrusion device, the double-acting extrusion die and/or the piercing rod of the present invention are matched with each other and the extrusion product with a large cross-section change.

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‧‧‧Variable section extrusion device

102‧‧‧Extrusion

110‧‧‧Ingot barrel

112‧‧‧ accommodating space

120‧‧‧Fixed extrusion mould

121‧‧‧Squeezing master

122‧‧‧ cavity

123‧‧‧Extruded male model

124‧‧‧ diagonal channel

125‧‧‧ oblique direction

126‧‧‧radial channel

127‧‧‧ Radial

128‧‧‧Drainage channel

129‧‧‧Limited

130‧‧‧Multi-action extrusion die

132‧‧‧Forming module

134‧‧‧ head

136‧‧‧ tail

142‧‧‧Promoting modules

144‧‧‧ head

146‧‧‧ tail

150‧‧‧Extrusion rod

152‧‧‧Squeeze direction

160‧‧‧through the heart

162‧‧‧Linear sliding platform

164‧‧‧Servo motor

Claims (10)

A variable cross-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 comprising: a squeeze type mother The mold includes a cavity that communicates with the receiving space of the ingot barrel; and an extruded male mold that is fixed to the extruded female mold, wherein the extruded male mold and the extruded male mold Forming at least one oblique channel, and the oblique channel has an oblique direction; a double-action extrusion die for moving relative to the fixed extrusion die, and comprising: at least one forming module, the forming module is disposed on The oblique channel has a head portion and a tail portion, wherein the head portion extends into the cavity and moves to a predetermined position along the oblique direction to change an exit area of the cavity; and Extruding the rod for moving relative to the ingot barrel and extruding the ingot in a direction of extrusion. The variable cross-section extrusion device of claim 1, wherein: when the head of the forming module is moved from a first predetermined position to a second predetermined position within a first time period, then the first The cavity has a variable-size outlet area that gradually changes from a first-size outlet area to a second-size outlet area during the period, whereby the extrusion rod presses the extrusion in the first period to make the extrusion It flows out through the variable-size outlet area of the cavity to form a variable-size extrusion, that is, a variable-section extrusion. The variable cross-section extrusion device of claim 2, wherein: when the head of the forming module moves to the second predetermined position and remains stationary for a second period of time, the cavity is in the second period of time Having the second size outlet area, whereby the extrusion rod squeezes the extrusion in the second period of time, causing the extrusion to flow out through the second size outlet area of the cavity to A fixed size extrusion is formed, wherein the fixed size extrusion is coupled to the variable size extrusion to combine the fixed size extrusion and the variable size extrusion into another variable profile extrusion. The variable cross-section extrusion device of claim 2, wherein the head of the forming module protrudes into an edge position of the cavity and extends into a head section of the forming module in the cavity. To control the outer diameter of the variable cross-section extrusion. The variable cross-section extrusion device according to claim 4, further comprising: a penetrating rod disposed in the ingot barrel and extending into a center position of the cavity for squeezing the variable section The profile becomes a hollow extruded section of variable cross section and determines the inner diameter of the hollow extruded section of the variable section. The variable cross-section extrusion device of claim 1, wherein: the extruded male mold further comprises a radial passage having a radial direction; and the double-action extrusion mold further comprises at least one push module. The pushing module extends into the radial passage and has a head and a tail, and the head of the pushing module is used to push the tail of the forming module along the radial direction. The variable cross-section extrusion device of claim 6, wherein: the tail portion of the forming module includes a first inclined surface; and the head of the pushing module includes a second inclined surface, the second inclined surface is in contact with and aligned with the a first slope, and the first and second slopes move relative to each other along a smooth contact surface between the first and second slopes. The variable cross-section extrusion device of claim 1, wherein the cavity is rectangular in shape, and the shape of the head of the forming module extending into the cavity is rectangular. The variable cross-section extrusion device of claim 1, wherein the extruded female mold further comprises at least one limiting portion for limiting a head of the forming module to extend the farthest into the cavity s position. A variable cross-section extrusion method comprising the following steps: A variable cross-section extrusion device includes an ingot barrel, a fixed extrusion die, and a double-action extrusion die, wherein the ingot barrel has an accommodation space, and the fixed extrusion die includes a squeeze a master mold and an extrusion type male mold, the extruded master mold includes a cavity, the cavity communicates with the receiving space of the ingot barrel, and at least one oblique shape is formed between the extruded male mold and the extruded male mold To the channel, the double-action extrusion die includes at least one forming module, and the forming module is disposed in the oblique channel and has a head; and a compacted body is accommodated in the receiving space of the ingot barrel; Extruding the extrudate in a period of time, causing the extrudate to flow out through a variable size exit area of the cavity to form a variable size extrusion, ie, a variable cross-section extrusion, wherein the forming module When the head moves from a first predetermined position to a second predetermined position during the period, the cavity has a variable size which gradually changes from a first size exit area to a second size exit area during the period Export area.