Continuous extrusion forming unit, die and device

Abstract

The utility model relates to the field of extrusion forming equipment, in particular to a continuous extrusion forming unit, a die and a device. The continuous extrusion forming unit comprises a cutting piece, a flow dividing piece and a shaping piece. The flow dividing piece is detachably connected with the dividing piece; the flow dividing piece is provided with a plurality of first flow dividing holes distributed around the axis of the dividing piece. The shunting piece is propped against the shaping piece; the shaping piece is provided with a shaping hole, and the axis of the shaping hole coincides with the axis of the dividing piece. Each first shunting hole is communicated with the shaping hole; wherein the dividing piece is provided with a dividing protrusion protruding towards the flow dividing piece; the dividing piece is used for guiding materials to flow into the first flow dividing holes. The continuous extrusion forming unit is easy and convenient to disassemble and replace, the maintenance efficiency can be improved, and the maintenance cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to extrusion forming equipment field, specifically, relate to a continuous extrusion forming unit, mould and device. BACKGROUND

[0002] Continuous extrusion forming is an advanced raw material forming technology, its principle is to utilize the friction between the deformed metal and the tool, through the rectangular section groove on the rotating extrusion wheel and the annular channel formed by the fixed die holder, realizes continuous extrusion. This method does not need external heating, because the heat generated by friction is enough to make the metal temperature to the temperature required for extrusion.

[0003] However, the continuous extrusion forming die in the prior art has the problems of inconvenient disassembly and high maintenance cost. UTILITY MODEL CONTENTS

[0004] The utility model discloses a continuous extrusion forming unit, mould and device, and its disassembly is simple and convenient, is convenient for replacement, can improve maintenance efficiency and reduce maintenance cost.

[0005] The embodiment of the utility model can be realized as follows:

[0006] In a first aspect, the utility model provides a continuous extrusion forming unit, comprising:

[0007] Splitting piece;

[0008] Splitting piece;

[0009] Shaping piece, splitting piece and shaping piece abut;Shaping piece is provided with shaping hole, and the axis of shaping hole coincides with the axis of splitting piece;Every first splitting hole is communicated with shaping hole;

[0010] Wherein, splitting piece is provided with splitting protrusion that protrudes towards splitting piece;Splitting piece is used to guide material flow into a plurality of first splitting holes.

[0011] In an optional implementation, splitting piece is further provided with connecting hole;The inner wall of connecting hole and the peripheral wall of splitting piece abut;The axis of connecting hole coincides with the axis of splitting piece;

[0012] Splitting piece passes through shaping hole, and the peripheral wall of splitting piece and the inner wall of shaping hole are spaced apart.

[0013] In an optional implementation, splitting piece includes resisting portion and guide portion, and resisting portion is connected with splitting protrusion and guide portion;The area of the cross section of guide portion in the direction perpendicular to its axis direction gradually decreases along its axis direction;

[0014] The circumferential wall of the resisting part abuts against the inner wall of the connecting hole; and the guiding part passes through the shaping hole and is spaced from the inner wall of the shaping hole.

[0015] In an optional embodiment, the dividing member further comprises a shaping part connected to the guiding part away from the resisting part.

[0016] In an optional embodiment, the continuously extruded and shaped unit further comprises an auxiliary member abutting against the dividing member.

[0017] The auxiliary member is provided with a clamping hole and a plurality of second dividing holes in communication with each other; the second dividing holes are arranged around the axis of the clamping hole; the inner wall of the clamping hole abuts against the circumferential wall of the resisting part; and the axis of the clamping hole coincides with the axis of the resisting part.

[0018] In an optional embodiment, the dividing member comprises a plurality of dividing plates, each of which is provided with a connecting hole segment and a first dividing hole; the plurality of dividing plates are connected to each other, and the plurality of connecting hole segments are in communication with each other to form the connecting hole.

[0019] In an optional embodiment, the continuously extruded and shaped unit further comprises a fitting member provided with a fitting hole, and the dividing member is arranged in the fitting hole and movably fitted with the fitting hole.

[0020] In an optional embodiment, the shaping member is provided with a shaping protrusion away from the dividing member, and the shaping protrusion has a through hole in communication with the shaping hole; the axis of the through hole coincides with the axis of the shaping hole; and the area of the cross section of the through hole in the direction perpendicular to the axis of the through hole gradually decreases along the axis of the through hole.

[0021] In a second aspect, the utility model provides a continuously extruded and shaped die, comprising a first unit, a second unit and the continuously extruded and shaped unit mentioned above.

[0022] The first unit is provided with a feeding channel, and the second unit is provided with a discharging channel; one or more of the first unit and the second unit are provided with a containing cavity; and the continuously extruded and shaped unit is contained in the containing cavity.

[0023] When the first unit, the second unit and the continuously extruded and shaped unit are in a closed die state, the feeding channel, the dividing hole, the shaping hole and the discharging channel are sequentially communicated.

[0024] In a third aspect, the utility model provides a continuously extruded and shaped device, comprising an extruding wheel and the continuously extruded and shaped die mentioned above, and the extruding wheel and the first unit are movably fitted.

[0025] The continuously extruded and shaped unit, the continuously extruded and shaped die and the continuously extruded and shaped device provided by the utility model embodiment have the following beneficial effects.

[0026] The continuous extrusion forming unit comprises a dividing piece, a flow dividing piece and a shaping piece; the flow dividing piece is detachably connected with the dividing piece; the flow dividing piece is provided with a plurality of first flow dividing holes distributed around the axis of the dividing piece; the flow dividing piece abuts against the shaping piece; the shaping piece is provided with a shaping hole, and the axis of the shaping hole coincides with the axis of the dividing piece; each first flow dividing hole is in communication with the shaping hole; wherein the dividing piece is provided with a dividing protrusion protruding towards the flow dividing piece; the dividing piece is used for guiding the material to flow into the plurality of first flow dividing holes.

[0027] The continuous extrusion forming unit utilizes the dividing piece to divide the flowing material, so that the material can flow to the plurality of first flow dividing holes located around the dividing piece under the action of the dividing piece, and the material flows into the shaping hole after passing through the first flow dividing hole, and is shaped into a tubular product through the shaping hole. Moreover, since the connection mode of the dividing piece and the flow dividing piece is detachable connection, when one of the dividing piece and the flow dividing piece is damaged, the damaged structure can be replaced to complete the maintenance, without the need for overall replacement, thereby improving the maintenance efficiency and reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The explosion schematic view of the continuous extrusion forming die provided for the present embodiment;

[0030] Figure 2 The cross-sectional schematic view of the continuous extrusion forming die provided for the present embodiment;

[0031] Figure 3 The cross-sectional schematic view of the first unit, the second unit and the material blocking block provided for the present embodiment;

[0032] Figure 4 The explosion schematic view of the continuous extrusion forming unit provided for the present embodiment;

[0033] Figure 5 The structural schematic view of the flow dividing piece provided for the present embodiment;

[0034] Figure 6 The structural schematic view of the flow dividing block provided for the present embodiment;

[0035] Figure 7 The structural schematic view of the dividing piece provided for the present embodiment;

[0036] Figure 8 TheFigure 2 A local enlarged view at the middle A;

[0037] Figure 9 A structure schematic view of the shaping member from a first perspective is provided for the embodiment;

[0038] Figure 10 A structure schematic view of the shaping member from a second perspective is provided for the embodiment;

[0039] Figure 11 A structure schematic view of the auxiliary member is provided for the embodiment.

[0040] Figure: 100-continuous extrusion forming unit; 110-segment member; 111-segment protrusion; 112-stop; 113-guide; 114-shaping part; 120-segment member; 121-connection hole; 122-first segment hole; 123-segment plate; 124-connection hole section; 130-shaping member; 131-shaping hole; 132-shaping protrusion; 133-through hole; 134-promotion flow part; 135-resistance flow part; 140-auxiliary member; 141-clamping hole; 142-second segment hole; 150-matching member; 151-matching hole; 200-continuous extrusion forming die; 210-first unit; 211-feeding channel; 220-second unit; 221-discharging channel; 230-material blocking block; 101-receiving cavity. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0043] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0044] In the description of the utility model, it needs to explain, if appearing the term "upper", "lower", "inner", "outer" and so on indication's orientation or position relation is based on the orientation or position relation shown in drawing, or it is the orientation or position relation of the utility model product using time usually placed, only is for the convenience of describing the utility model and simplifying the description, and is not the indication or the implied device or element that the indicated must have the specific orientation, constructs and operates with the specific orientation, therefore cannot be understood as the restriction of the utility model.

[0045] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] It needs to explain, in the case of not conflicting, the features in the embodiments of the utility model can be combined with each other.

[0047] Please refer to Figures 1-3 , Figure 1 It is the explosion schematic view of the continuous extrusion forming die 200 provided for the embodiment; Figure 2 It is the cross section schematic view of the continuous extrusion forming die 200 provided for the embodiment; Figure 3 It is the cross section schematic view of the first unit 210, the second unit 220 and the material blocking block 230 provided for the embodiment.The X direction shown in the figure is the first direction, the Y direction is the second direction, and the Z direction is the third direction;Among them, the first direction, the second direction and the third direction are perpendicular to each other;The first direction is the movement direction of the material.

[0048] The utility model provides a kind of continuous extrusion forming device, which includes extrusion wheel and continuous extrusion forming die 200;Continuous extrusion forming die 200 includes first unit 210, second unit 220 and continuous extrusion forming unit 100;First unit 210 and extrusion wheel movable cooperation;First unit 210 is provided with feed channel 211, and second unit 220 is provided with discharge channel 221;One or more of first unit 210 and second unit 220 are provided with accommodating cavity 101;Continuous extrusion forming unit 100 is accommodated in accommodating cavity 101;When first unit 210, second unit 220 and continuous extrusion forming unit 100 are in closed die state, feed channel 211, the forming channel of continuous extrusion forming unit 100 and discharge channel 221 are sequentially communicated.

[0049] Specifically, the first unit 210 is provided with a receiving groove for accommodating the material blocking block 230, and the first unit 210 is also provided with a feed channel 211;The extrusion wheel and the first unit 210 cooperate, so that the material is close to the material blocking block 230 under the action of extrusion force;And after contacting the material blocking block 230, the material blocking block 230 can change the movement direction of the material, so that the material enters the feed channel 211 and moves in the first direction.

[0050] The continuous extrusion forming unit 100 has a forming channel, and the feeding channel 211, the forming channel and the discharging channel 221 are sequentially communicated, so that the material in the feeding channel 211 continues to move in the first direction to enter the forming channel, and the shape of the required product is formed in the forming channel, and then, the required product is obtained by the discharging channel 221 out of the continuous extrusion forming die 200.

[0051] In the embodiment, the continuous extrusion forming unit 100 fills the accommodation cavity 101, so as to avoid the movement of the continuous extrusion forming unit 100 in the accommodation cavity 101, so that the material cannot form the required shape, and the product quality is affected.

[0052] It should be noted that the connection relationship between the first unit 210, the continuous extrusion forming unit and the second unit 220 in the embodiment is detachable connection, and in the process of maintenance, if one of the structures fails, only the structure needs to be replaced and repaired, so as to avoid replacing the whole structure, thereby reducing the cost and improving the maintenance efficiency.

[0053] In addition, in the embodiment, the axis of the feeding channel 211 coincides with the axis of the discharging channel 221, and both are parallel to the first direction.

[0054] Please refer to Figures 1-10 , Figure 4 The explosion schematic view of the continuous extrusion forming unit 100 provided in the embodiment is shown in the figure; Figure 5 The structure schematic view of the flow divider 120 provided in the embodiment is shown in the figure; Figure 6 The structure schematic view of the flow divider provided in the embodiment is shown in the figure; Figure 7 The structure schematic view of the flow divider 110 provided in the embodiment is shown in the figure; Figure 8 The partial enlarged view of A in the figure; Figure 2 The structure schematic view of the flow divider 110 provided in the embodiment is shown in the figure; Figure 9 The structure schematic view of the flow divider 110 provided in the embodiment is shown in the figure; Figure 10 The structure schematic view of the flow divider 110 provided in the embodiment is shown in the figure.

[0055] In the embodiment, the continuous extrusion forming unit 100 comprises a dividing piece 110, a flow dividing piece 120 and a shaping piece 130; the flow dividing piece 120 is detachably connected with the dividing piece 110; the flow dividing piece 120 is provided with a plurality of first flow dividing holes 122 distributed around the axis of the dividing piece 110; the flow dividing piece 120 abuts against the shaping piece 130; the shaping piece 130 is provided with a shaping hole 131, the axis of the shaping hole 131 coincides with the axis of the dividing piece 110; each first flow dividing hole 122 communicates with the shaping hole 131; wherein the dividing piece 110 is provided with a dividing protrusion 111 protruding towards the flow dividing piece 120; the dividing piece 110 is used to guide the material to flow into the plurality of first flow dividing holes 122.

[0056] Specifically, in the embodiment, the flow dividing piece 120 is provided with a connecting hole 121, and the dividing piece 110 is clamped with the connecting hole 121, so as to fix the dividing piece 110. The dividing piece 110 is provided with a dividing protrusion 111 protruding towards the flow dividing piece 120, in other words, the dividing protrusion 111 protrudes towards the position where the feeding channel 211 is located, so that the material flowing from the feeding channel 211 to the flow dividing piece 120 will first contact the dividing protrusion 111, so that under the extrusion action of the dividing protrusion 111, the material moves towards the periphery of the dividing piece 110, and then flows into the plurality of first flow dividing holes 122 distributed around the periphery of the dividing piece 110.

[0057] It should be noted that the axis of the dividing piece 110 coincides with the axis of the feeding channel 211; that is, the axis direction of the dividing piece 110 is parallel to the first direction. And the axis of the dividing piece 110 coincides with the axis of the connecting hole 121, therefore, the plurality of first flow dividing holes 122 are distributed around the axis of the connecting hole 121.

[0058] In order to avoid the material entering the connecting hole 121 and entering the shaping hole 131 from the connecting hole 121, which affects the shape and quality of the product, the outer wall of the dividing piece 110 in the embodiment is tightly fitted with the inner wall of the connecting hole 121, so as to improve the sealing property while improving the connection stability.

[0059] The working principle of the continuous extrusion forming unit 100 in the continuous extrusion forming die 200 is as follows:

[0060] The material in the feeding channel 211 continues to move in the first direction and contacts the dividing piece 110, which prevents the material from continuing to move in the first direction, so that the material flows to the plurality of first distribution pieces 120 on the dividing piece 110, and since the cross section of the first distribution piece 120 in this embodiment is arc-shaped in the second direction, a plurality of arc-shaped structures can be formed after the material flows through the first distribution piece 120. Then, the material flowing through the first distribution piece 120 continues to flow to the shaping hole 131; the plurality of arc-shaped structures contact at the shaping hole 131, and since the material is in a high-temperature state, the plurality of arc-shaped structures are welded together after contacting to form a tubular structure. Finally, the material flows out of the discharging channel 221, and after cooling, a tubular product can be obtained.

[0061] It should be noted that the second direction is perpendicular to the first direction, and the first direction is parallel to the axis of the dividing piece 110, so the second direction is perpendicular to the axis of the dividing piece 110.

[0062] In this embodiment, due to the extrusion of the extrusion wheel and the first unit 210 on the material, the material becomes a high-temperature molten fluid, so that the shape of the material can be changed, and a plurality of independent arc-shaped structures can be welded together at the shaping hole 131 to form a tubular product.

[0063] It can be understood that the material in this embodiment is a metal wire, which is a solid structure, and the required tubular product is a hollow structure, so this embodiment divides the material into a plurality of arc-shaped structures by the dividing piece 110 and the distribution piece 120, and then re-welds them together at the shaping hole 131 to form a hollow tubular product.

[0064] In this embodiment, the connecting hole 121 of the dividing piece 110 and the distribution piece 120 is clamped and matched, so that the dividing piece 110 can be connected to the distribution piece 120 to fix the dividing piece 110, so that the dividing piece 110 can divide the material and then make the material enter the plurality of first distribution holes 122 to form a plurality of arc-shaped structures. When the dividing piece 110 or the distribution piece 120 needs to be repaired, the dividing piece 110 can be removed from the connecting hole 121 to repair the structure that needs to be repaired, avoiding replacing the whole structure, reducing the maintenance cost and improving the maintenance efficiency.

[0065] It should be noted that if the partition member 110 is directly fixedly connected to the flow distribution member 120, i.e., the partition member 110 and the flow distribution member 120 are in an integrated structure, the part between the partition member 110 and the first flow distribution hole 122 will be relatively thin, thus unable to withstand the pressure applied by the material to the flow distribution member 120, resulting in the breakage of the flow distribution member 120. In the embodiment, the partition member 110 and the flow distribution member 120 are separately arranged, and the partition member 110 can also share part of the pressure, thus reducing the pressure applied by the material to the flow distribution member 120.

[0066] In other embodiments, the partition member 110 can also be connected to the flow distribution member 120 by a connecting member such as a bolt, and when maintenance is needed, the connecting member is removed to separate the partition member 110 and the flow distribution member 120. In other embodiments, the flow distribution member 120 is not provided with the connecting hole 121.

[0067] According to the above, the partition member 110 passes through the shaping hole 131, and the peripheral wall of the partition member 110 is spaced from the inner wall of the shaping hole 131. It can be understood that when the material flows into the shaping hole 131 from the first flow distribution hole 122, the middle parts of the plurality of arc-shaped structures can be connected together, thus affecting the shape of the obtained product. Therefore, the partition member 110 passes through the shaping hole 131 to avoid the arc-shaped surfaces of the plurality of arc-shaped structures being connected together, so as to ensure that the plurality of arc-shaped structures can form a hollow pipeline after being welded, thus ensuring that the shape of the product is tubular. In the embodiment, the axis of the shaping hole 131 coincides with the axis of the connecting hole 121. It can be understood that the partition member 110 extends in the direction of the shaping member 130 to extend into the shaping hole 131, thus playing a guiding role to ensure that the material can enter the shaping hole 131 after flowing through the first flow distribution hole 122. The peripheral wall of the partition member 110 is spaced from the inner wall of the shaping hole 131 to provide a space for the material to pass through, thus avoiding hindering the flow of the material.

[0068] Further, as shown in Figures 1-9 , the partition member 110 comprises a blocking portion 112 and a guiding portion 113, the blocking portion 112 is connected with the partition protrusion 111 and the guiding portion 113; the area of the cross section of the guiding portion 113 in the direction perpendicular to the axis direction thereof gradually decreases along the axis direction thereof; the peripheral wall of the blocking portion 112 abuts against the inner wall of the connecting hole 121; the guiding portion 113 passes through the shaping hole 131 and is spaced from the inner wall of the shaping hole 131.

[0069] Specifically, the shape of the blocking portion 112 in the embodiment is a sphere, thus the inner wall of the connecting hole 121 only abuts against part of the sphere, and the other part is located outside. It can be understood that the blocking portion 112 and the partition protrusion 111 jointly form a sphere in the embodiment, and in other embodiments, the shapes of the blocking portion 112 and the partition protrusion 111 can be adjusted according to actual conditions.

[0070] The area of the cross section of the guide portion 113 in the second direction gradually decreases along the first direction, thereby guiding the plurality of arc-shaped structures to move to the position of the shaping hole 131, and causing the distance between the plurality of arc-shaped structures to gradually decrease in the process of flowing along the first direction, and then to weld together in the shaping hole 131 to form the tubular product.

[0071] It should be noted that the area of the cross section of the shaping hole 131 in the second direction also gradually decreases along the first direction, so that the interval distance between the inner wall of the shaping hole 131 and the outer wall of the guide portion 113 in the second direction remains unchanged, avoiding unnecessary deformation of the material due to the change of the interval distance, and avoiding affecting the quality of the product.

[0072] According to the above, the dividing piece 110 further comprises a shaping portion 114 connected to the side of the guide portion 113 away from the blocking portion 112. The area of the cross section of the shaping portion 114 in the second direction is equal along the first direction, i.e., the shaping portion 114 is in a cylindrical shape. The shaping portion 114 in the embodiment has a certain length along the first direction, so as to increase the time of the material flowing through the shaping portion 114, thereby ensuring that the material can be shaped into the required product shape and improving the quality of the product.

[0073] Since the guide portion 113 in the embodiment passes through the shaping hole 131, part of the shaping portion 114 is located inside the shaping hole 131 and part of the shaping portion 114 is located outside the shaping hole 131.

[0074] In other embodiments, at least part of the shaping hole 131 can be located inside the shaping hole 131, at which time the outer wall of the shaping portion 114 and the outer wall of the guide portion 113 are both spaced apart from the inner wall of the shaping hole 131 to provide a space for the material to pass through, avoiding hindering the flow of the material.

[0075] Further, please refer to Figures 1-11 , Figure 11 The structure schematic view of the auxiliary piece 140 provided for the embodiment; the continuous extrusion forming unit 100 further comprises an auxiliary piece 140, the auxiliary piece 140 abuts against the dividing piece 120; the auxiliary piece 140 is provided with a clamping hole 141 and a plurality of second dividing holes 142 in communication with each other; the second dividing holes 142 are arranged around the axis of the clamping hole 141; the inner wall of the clamping hole 141 abuts against the peripheral wall of the blocking portion 112; the axis of the clamping hole 141 coincides with the axis of the blocking portion 112.

[0076] To avoid the excessive pressure on the flow distributor 120 and the fracture of the flow distributor 120 caused by the excessive pressure, the auxiliary member 140 is arranged in the embodiment to make the material pass through the second flow hole 142 on the auxiliary member 140 under the action of the resisting portion 112, and then pass through the first flow hole 122 on the flow distributor 120. It can be understood that the side of the auxiliary member 140 close to the feeding channel 211 will be in direct contact with the material to bear the pressure of the material acting on the surface of the auxiliary member 140, thereby reducing the pressure on the flow distributor 120 and avoiding the fracture of the flow distributor 120.

[0077] It should be noted that in the embodiment, the area of the cross section of the first flow hole 122 in the second direction is smaller than the area of the cross section of the second flow hole 142 in the second direction, so that the material flowing through the second flow hole 142 can fill the first flow hole 122, thereby avoiding the gap affecting the product quality. Similarly, the material flowing through the first flow hole 122 can fill the gap between the shaping hole 131 and the guiding portion 113 and the shaping portion 114 to ensure the product quality.

[0078] Since the dividing protrusion 111 and the resisting portion 112 jointly form a sphere in the embodiment, in the embodiment, the axis of the connecting hole 121 coincides with the axis of the clamping hole 141, and the connecting hole 121 is projected in the profile of the clamping hole 141 in the first direction, that is, the area of the cross section of the connecting hole 121 in the second direction is smaller than the area of the cross section of the clamping hole 141 in the second direction; so that the outer wall of the resisting portion 112 can tightly fit with the inner wall of the clamping hole 141 and the inner wall of the connecting hole 121, avoiding the material passing through the clamping hole 141 and the connecting hole 121.

[0079] In other embodiments, the area of the cross section of the connecting hole 121 in the second direction and the area of the cross section of the clamping hole 141 in the second direction can be adjusted according to the change of the shape of the resisting portion 112.

[0080] It should be noted that in the embodiment, the flow distributor 120 includes a plurality of flow plates 123, each of which is provided with a connecting hole segment 124 and a first flow hole 122; the plurality of flow plates 123 are connected to each other, and the plurality of connecting hole segments 124 are communicated with each other to form the connecting hole 121.

[0081] Further, please refer to Figures 1-11The shunt 120 in the embodiment includes two shunt plates 123, which are provided with a semicircular connecting hole section 124 and a first shunt hole 122 arranged around the edge of the connecting hole section 124; when the two shunt plates 123 are connected together, the two semicircular connecting hole sections 124 are communicated to form a complete connecting hole 121. The two shunt plates 123 are detachably connected, so that when one of the first shunt holes 122 is blocked by the material, the maintenance can be completed by replacing the shunt plate 123 corresponding to the first shunt hole 122, which is high in maintenance efficiency and low in maintenance cost.

[0082] In other embodiments, the shunt plate 123 can also be provided in three or more, and each shunt plate 123 is provided with the same number of first shunt holes 122. The number of shunt plates 123 and first shunt holes 122 on the shunt plate 123 can be adjusted according to actual conditions.

[0083] According to the above, since the embodiment is provided with two shunt holes, in order to ensure that the wall thicknesses of the tubular product at different positions are the same, the continuous extrusion forming unit 100 in the embodiment further includes a matching piece 150 provided with a matching hole 151, and the shunt piece 120 is arranged in the matching hole 151 and movably matched with the matching hole 151. It can be understood that the material acts on the shunt piece 120, and the shunt piece 120 rotates around the axis of the dividing piece 110 in the matching hole 151 after being extruded by the material, that is, the shunt piece 120 rotates around the axis of the connecting hole 121, thereby changing the position of the first shunt hole 122, so that the material can flow from different positions to ensure that the wall thicknesses of the tubular product at different positions are equal.

[0084] However, during operation, it cannot be ensured that the shunt piece 120 can rotate 360° around the axis of the connecting hole 121, therefore, the shaped hole 131 in the embodiment is further provided with a flow promoting part 134 and a flow blocking part 135, the flow blocking part 135 corresponds to the first shunt hole 122 in the first direction, thereby reducing the flow rate of the material flowing in the first direction from the first shunt hole 122, so that part of the material moves to the flow promoting part 134 in other directions, thereby ensuring that the wall thicknesses of the tubular product at different positions are the same and improving the product quality.

[0085] Since the embodiment is provided with two first shunt holes 122, the number of flow blocking parts 135 and flow promoting parts 134 is also two.

[0086] According to the above structure, it can be understood that the continuous extrusion forming unit may rotate and move after being subjected to the pressure applied by the material, therefore, the shaped piece 130 in the embodiment is provided with a limiting part a (as shown by reference sign a), and the auxiliary piece 140 is provided with a limiting part b (as shown by reference sign b). Figure 9 ​Figure 11 The fitting part 150 is provided with a limiting part c (as shown by the mark c) to limit the positions of the shaping part 130, the auxiliary part 140 and the fitting part 150, so as to avoid rotation or movement of the shaping part 130, the auxiliary part 140 and the fitting part 150. Figure 4

[0087] Further, please refer to Figures 1-11 In the embodiment, the shaping part 130 is provided with a shaping protrusion 132 away from the shunting part 120, and the shaping protrusion 132 has a through hole 133 in communication with the shaping hole 131; the axis of the through hole 133 coincides with the axis of the shaping hole 131; the cross-sectional area of the through hole 133 in the direction perpendicular to the axis gradually decreases along the axis.

[0088] It can be understood that the shaping protrusion 132 is a cylindrical structure, the shaping hole 131 and the through hole 133 are in communication to form a shaping channel; and the cross-sectional area of the shaping channel in the second direction gradually decreases along the first direction. The embodiment sets the positioning protrusion and the through hole 133 to increase the length of the positioning channel in the first direction, thereby increasing the time of the material flowing in the positioning channel, ensuring that the plurality of arc-shaped structures can be welded in the positioning channel, avoiding the phenomenon of the obtained product being broken, and ensuring the product quality.

[0089] In the embodiment, in order to ensure that the cross-sectional area of the through hole 133 in the second direction gradually decreases along the first direction, and the wall thickness of the cylindrical structure does not change, the cross-sectional area of the positioning protrusion in the second direction gradually decreases along the first direction.

[0090] In other embodiments, the cross-sectional area of the positioning protrusion in the second direction can also not change, that is, in other embodiments, the wall thickness of the cylindrical positioning protrusion gradually increases along the first direction.

[0091] In summary, the continuous extrusion forming unit 100 divides the flowing material by the dividing part 110, so that the material can flow to the plurality of first shunting holes 122 located around the dividing part 110 under the action of the dividing part 110, and then flow into the shaping hole 131 after passing through the first shunting hole 122, and is shaped into a tubular product through the shaping hole 131. Moreover, since the connecting mode of the dividing part 110 and the shunting part 120 is detachable connection, when one of the dividing part 110 and the shunting part 120 is damaged, the damaged structure can be replaced to complete the repair, without the need for overall replacement, thereby improving the repair efficiency and reducing the repair cost.

[0092] ​The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A continuous extrusion forming unit, characterized by, The continuous extrusion forming unit (100) comprises a dividing piece (110), a flow dividing piece (120) detachably connected with the dividing piece (110), the flow dividing piece (120) being provided with a plurality of first flow dividing holes (122) distributed around an axis of the dividing piece (110), a shaping piece (130) abutting against the flow dividing piece (120), the shaping piece (130) being provided with a shaping hole (131) with an axis coinciding with the axis of the dividing piece (110), and each of the first flow dividing holes (122) being in communication with the shaping hole (131). The dividing piece (110) is provided with a dividing protrusion (111) protruding towards the flow dividing piece (120), and the dividing piece (110) is used to guide the material to flow into the plurality of first flow dividing holes (122). The flow dividing piece (120) is further provided with a connecting hole (121), an inner wall of the connecting hole (121) abutting against a peripheral wall of the dividing piece (110), and an axis of the connecting hole (121) coinciding with the axis of the dividing piece (110). The dividing piece (110) passes through the shaping hole (131), and a peripheral wall of the dividing piece (110) is spaced apart from an inner wall of the shaping hole (131). The dividing piece (110) comprises a resisting portion (112) connected with the dividing protrusion (111) and a guiding portion (113), an area of a cross section of the guiding portion (113) in a direction perpendicular to an axis of the guiding portion (113) gradually decreasing along the axis of the guiding portion (113).

2. A continuous extrusion forming unit according to claim 1, characterised in that, A peripheral wall of the resisting portion (112) abuts against an inner wall of the connecting hole (121), and the guiding portion (113) passes through the shaping hole (131) and is spaced apart from the inner wall of the shaping hole (131). The dividing piece (110) further comprises a shaping portion (114) connected with a side of the guiding portion (113) away from the resisting portion (112).

3. A continuous extrusion forming unit according to claim 2, characterised in that, The continuous extrusion forming unit (100) further comprises an auxiliary piece (140) abutting against the flow dividing piece (120). The auxiliary piece (140) is provided with a clamping hole (141) and a plurality of second flow dividing holes (142) in communication with each other, the second flow dividing holes (142) being arranged around an axis of the clamping hole (141), an inner wall of the clamping hole (141) abutting against a peripheral wall of the resisting portion (112), and an axis of the clamping hole (141) coinciding with an axis of the resisting portion (112).

4. A continuous extrusion forming unit according to claim 3, characterised in that, The flow dividing piece (120) comprises a plurality of flow dividing plates (123), each of the flow dividing plates (123) being provided with a connecting hole section (124) and the first flow dividing hole (122), and the plurality of flow dividing plates (123) being connected with each other and the plurality of connecting hole sections (124) being in communication with each other to form the connecting hole (121).

5. A continuous extrusion forming unit according to claim 3, characterised in that, ​ ​ 6. The continuous extrusion forming unit of claim 2, wherein, ​ 7. The continuous extrusion forming unit of claim 1, wherein, The continuous extrusion forming unit (100) further comprises a fitting part (150) provided with a fitting hole (151), and the shunt part (120) is arranged in the fitting hole (151) and movably fitted with the fitting hole (151).

8. The continuous extrusion forming unit of claim 1, wherein, The shaping part (130) is provided with a shaping protrusion (132) on the side away from the shunt part (120), and the shaping protrusion (132) has a through hole (133) in communication with the shaping hole (131); the axis of the through hole (133) coincides with the axis of the shaping hole (131); the cross-sectional area of the through hole (133) in the direction perpendicular to the axis gradually decreases along the axis direction.

9. A continuous extrusion molding die characterized by comprising: The continuous extrusion forming unit (100) as claimed in any one of claims 1-8 is arranged in the first unit (210) and the second unit (220). The first unit (210) is provided with a feeding channel (211), and the second unit (220) is provided with a discharging channel (221); one or more of the first unit (210) and the second unit (220) is provided with a containing cavity (101); and the continuous extrusion forming unit (100) is arranged in the containing cavity (101). When the first unit (210), the second unit (220) and the continuous extrusion forming unit (100) are in a closed mold state, the feeding channel (211), the shunt hole, the shaping hole (131) and the discharging channel (221) are sequentially communicated.

10. A continuous extrusion forming apparatus characterized by comprising: The continuous extrusion forming mold (200) as claimed in claim 9 is movably fitted with the extrusion wheel and the first unit (210).

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