Extrusion forming die for aluminum profile of driving device

Abstract

The utility model discloses an extrusion forming die for an aluminum profile of a driving device, which comprises an upper die and a lower die, a die core is arranged at the bottom of a connecting column protruding from the middle of the bottom surface of the upper die, and a plurality of flow dividing holes which are circumferentially spaced and vertically penetrate through the upper die are formed in the periphery of the connecting column; a plurality of forming holes are formed in the peripheral wall of the mold core in an inwards-concave mode and penetrate through the lower end face of the mold core, and a forming wall is arranged between every two adjacent forming holes. The forming holes comprise larger screw column forming holes and smaller tooth forming holes; a flow guide opening is formed in the position, corresponding to the screw column forming hole, of the joint of the connecting column and the mold core in a concave mode, and the flow guide opening is inwards concave and downwards extends to communicate with the screw column forming hole. The width of the forming wall is larger than that of the tooth forming hole, and a mold core flow stopping block is arranged on the forming wall in an outward protruding mode. Therefore, the structural strength of the screw column of the extruded aluminum profile can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of molds, and in particular to an extrusion molding mold for an aluminum profile of a drive device. Background Technology

[0002] Extrusion dies are a type of forming die, and their material discharge is achieved through the extrusion action. They are widely used in the production of aluminum irregular structures. For example... Figure 1 The aluminum profile 10 of the drive device shown has a teardrop-shaped profile and is hollow inside. The inner wall has several teeth 11 and screw holes 12. However, when produced using a conventional extrusion die, there are defects such as the screw holes 12 inside the die easily breaking during extrusion, the product being easily deformed, poor product centering, and inaccurate dimensions, which affect the subsequent use of the aluminum profile. Utility Model Content

[0003] The purpose of this utility model is to provide an extrusion molding die for an aluminum profile of a drive device, which has the advantage of preventing the screw holes of the product from breaking.

[0004] To achieve the above objectives, the solution of this utility model is:

[0005] An extrusion molding die for an aluminum profile of a drive device includes an upper die and a lower die, wherein the upper die and the lower die are fastened together, and the core of the upper die is fitted inside the cavity of the lower die; the core is located at the bottom of a connecting post protruding from the center of the bottom surface of the upper die, and the outer periphery of the connecting post is provided with several circumferentially spaced and vertically penetrating flow holes of the upper die; the outer peripheral wall of the core is recessed inwardly with a plurality of forming holes, the forming holes penetrating the lower end face of the core, and the space between adjacent forming holes is a forming wall;

[0006] The forming hole includes a larger screw post forming hole and a smaller tooth forming hole; the connection between the connecting post and the mold core is also provided with a guide port corresponding to the screw post forming hole, and the guide port extends inward and downward to guide the screw post forming hole.

[0007] The width of the forming wall is greater than the width of the tooth forming hole, and a mold core flow-blocking block protrudes outward from the forming wall.

[0008] Furthermore, the top surface of the lower mold is provided with a welding chamber, and the cavity is formed in the middle of the welding chamber; a flow guide block is provided on the outer side of the upper edge of the cavity of the welding chamber corresponding to the flow guide, and the flow guide block is located on the outer side of the flow guide after the mold is closed.

[0009] Furthermore, the top surface of the lower mold is provided with a welding chamber, and the cavity is formed in the middle of the welding chamber; the outline of the cavity is teardrop-shaped, including an arc segment, short straight segments spaced apart from the opening of the arc segment, and two long straight segments connecting the two ends of the short straight segments and the two ends of the arc segment.

[0010] Furthermore, the forming holes of the mold core are located on the inner sides of the arc-shaped segment and the two long straight segments, while the upper outer edges of the arc-shaped segment and the long straight segments of the welding chamber are formed with a lower mold flow-blocking block.

[0011] Furthermore, the lower mold flow blocking block is also provided with a flow guide port flow blocking block at the position corresponding to the flow guide port, and the flow guide port flow blocking block is located outside the flow guide port after the mold is closed.

[0012] Furthermore, there are three circumferentially spaced diversion holes, and the three diversion holes correspond to the arc-shaped segment and two long straight segments located in the lower model cavity, respectively; the short straight segment of the lower model cavity corresponds to the diversion bridge located between the two diversion holes.

[0013] After adopting the above technical solution, this utility model can be used to form an aluminum profile structure of a drive device with screw pillars and several internal teeth. Since the mold core is provided with a guide port for the screw pillar forming hole corresponding to the screw pillar forming, the metal material flowing out through the diversion hole can fully flow into the screw pillar forming hole, avoiding insufficient metal material in the larger screw pillar forming hole, which would lead to poor strength. It can also prevent the screw holes on the screw pillars of the formed aluminum profile from breaking, and can effectively improve the structural strength of the screw pillar.

[0014] Furthermore, although the outer peripheral wall of the mold core has multiple toothed forming holes, the width of the forming wall is greater than the width of the toothed forming holes. To prevent excessive metal flow velocity at the forming wall from causing deformation of the overall outline of the aluminum profile, especially the circular portion, this embodiment includes a mold core flow-blocking block on the forming wall. This block balances the metal flow velocity at the forming holes and the forming wall, ensuring that the overall shape of the aluminum profile remains unchanged. Figure 1 The circumference of the aluminum profile shown meets the requirements, and improves the dimensional accuracy of the product forming. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of an aluminum profile for a drive device;

[0016] Figure 2 A perspective view of the molded embodiment of this utility model;

[0017] Figure 3 A perspective view of the upper mold in an embodiment of this utility model;

[0018] Figure 4 A perspective view of the lower mold of this utility model embodiment;

[0019] Figure 5 A bottom view of the mold-closed assembly of this utility model embodiment;

[0020] Figure 6 A cross-sectional view of the mold-closed embodiment of this utility model;

[0021] Figure 7 Front view of the upper mold in this embodiment of the utility model;

[0022] Figure 8 A bottom view of the upper mold in an embodiment of this utility model.

[0023] Labeling Explanation: Aluminum Profile 10, Tooth 11, Screw Hole 12, Screw Pillar 13, Upper Mold 20, Mold Core 21, Forming Hole 211, Screw Pillar Forming Hole 2111, Tooth Forming Hole 2112, Forming Wall 212, Mold Core Flow Block 2121, Connecting Pillar 22, Flow Guide 221, Flow Diversion Hole 23, Flow Diversion Bridge 24, Lower Mold 30, Cavity 31, Arc Segment 311, Short Straight Segment 312, Long Straight Segment 313, Welding Chamber 32, Lower Mold Flow Block 33, Flow Guide Flow Block 331. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] like Figures 2 to 8 As shown, an extrusion molding die for an aluminum profile of a driving device according to this embodiment includes an upper die 20 and a lower die 30. The upper die 20 and the lower die 30 are fastened together, and the core 21 of the upper die 20 is fitted into the cavity 31 of the lower die 30.

[0026] The mold core 21 is located at the bottom of the connecting post 22 protruding from the center of the bottom surface of the upper mold 20. The outer periphery of the connecting post 22 is provided with several circumferentially spaced diversion holes 23 that pass through the upper mold 20 vertically. The outer periphery of the mold core 21 is provided with multiple forming holes 211 that are recessed inward. The forming holes 211 pass through the lower end face of the mold core 21, and the space between adjacent forming holes 211 is a forming wall 212.

[0027] The forming hole 211 includes a larger screw stud forming hole 2111 and a smaller tooth forming hole 2112. In this embodiment, the screw stud forming hole 2111 is an irregularly shaped hole, and the tooth forming hole 2112 can be a rectangular hole. Of course, the specific shapes of the two can be changed according to the design requirements of the aluminum profile 10.

[0028] At the connection between the connecting post 22 and the mold core 21, a guide port 221 is also recessed at the screw post forming hole 2111. The guide port 221 is recessed inward and extends downward to guide the screw post forming hole 2111.

[0029] The width of the forming wall 212 is greater than the width of the tooth forming hole 2112, and the forming wall 212 has a mold core flow blocking block 2121 protruding outward.

[0030] Therefore, this embodiment can be used to mold such as Figure 1 The aluminum profile 10 structure shown has a screw post 13 and several internal teeth 11. Since the mold core 21 is provided with a guide port 221 corresponding to the screw post forming hole 2111 formed by the screw post 13, the metal material flowing out through the diversion hole 23 can fully flow into the screw post forming hole 2111. This avoids insufficient metal material in the large screw post forming hole 2111, which would lead to poor strength. It can also prevent the screw hole 12 on the screw post 13 of the formed aluminum profile 10 from breaking, and can effectively improve the structural strength of the screw post 13.

[0031] Furthermore, although the outer peripheral wall of the mold core 21 has multiple toothed forming holes 2112, the width of the forming wall 212 is greater than the width of the toothed forming holes 2112. To prevent the metal material flow rate at the forming wall 212 from being too fast and causing deformation of the overall outline of the aluminum profile 10, especially the circular part, this embodiment provides a mold core flow blocking block 2121 on the forming wall 212. This block can balance the metal material flow rates at the forming holes 211 and the forming wall 212, ensuring that the overall outline shape of the aluminum profile 10 does not deform. Figure 1 The circumference of the aluminum profile 10 shown meets the requirements, and improves the dimensional accuracy of the product forming.

[0032] See Figure 4 In this embodiment, the top surface of the lower mold 30 is provided with a welding chamber 32, and the cavity 31 is formed in the middle of the welding chamber 32. The outline of the cavity 31 can be teardrop-shaped, including an arc segment 311, a short straight segment 312 spaced apart from the opening of the arc segment 311, and two long straight segments 313 connecting the two ends of the short straight segment 312 and the two ends of the arc segment 311. After the metal material is extruded and diverted through the diversion hole 23, it gathers in the welding chamber 32 and then flows to the cavity 31, which can be used to form such as Figure 1 The aluminum profile 10 structure.

[0033] See Figure 8 In this embodiment, the forming holes 211 of the mold core 21 are located on the inner sides of the arc-shaped segment 311 and the two long straight segments 313. Specifically, in this embodiment, a screw post forming hole 2111 is provided at the connection between the two long straight segments 313 and the arc-shaped segment 311, and the remaining forming holes 211 are toothed forming holes 2112. Therefore, a lower mold flow blocking block 33 can be formed protruding on the outer side of the upper edge of the arc-shaped segment 311 and the long straight segment 313 of the cavity 31 of the welding chamber 32.

[0034] Since the die cores 21 corresponding to the arc segment 311 and the long straight segment 313 are densely equipped with forming holes 211, while the die core 21 corresponding to the short straight segment 312 is not equipped with forming holes 211, in order to avoid uneven metal flow rate, the metal flow rate can be slowed down by setting the lower die flow block 33 to balance the overall metal flow rate of the product during the extrusion process, ensuring that the product shape is not deformed, the dimensions are compliant, and the strength meets the requirements.

[0035] Furthermore, the lower mold flow-blocking block 33 is also provided with a flow-blocking block 331 corresponding to the position of the flow-blocking port 221, and the flow-blocking block 331 is located outside the flow-blocking port 221 after the mold is closed. This is also to avoid the metal flow rate at the larger screw post forming hole 2111 being too fast.

[0036] Of course, if each section of the cavity 31 is provided with forming holes 211, the lower mold flow blocking block 33 can be removed and a flow guide block 331 can be set separately.

[0037] Meanwhile, in this embodiment, there can be three circumferentially spaced flow-diverting holes 23, and the three flow-diverting holes 23 correspond to the arc-shaped segment 311 and two long straight segments 313 of the cavity 31 of the lower mold 30, respectively; the short straight segment 312 of the cavity 31 of the lower mold 30 corresponds to the flow-diverting bridge 24 located between the two flow-diverting holes 23. By setting each flow-diverting hole 23 to correspond to the arc-shaped segment 311 and two long straight segments 313, the metal material can flow to the corresponding forming area in a targeted manner.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0039] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. An extrusion molding die for an aluminum profile of a driving device, comprising an upper die and a lower die, wherein the upper die and the lower die are fastened together, and the core of the upper die is fitted inside the cavity of the lower die; characterized in that: The mold core is located at the bottom of the connecting column protruding in the middle of the bottom surface of the upper mold. The outer periphery of the connecting column is provided with several circumferentially spaced and vertically penetrating the upper mold with diversion holes. The outer peripheral wall of the mold core is provided with multiple forming holes that are recessed inward. The forming holes penetrate the lower end face of the mold core, and the space between adjacent forming holes is a forming wall. The forming hole includes a larger screw post forming hole and a smaller tooth forming hole; the connection between the connecting post and the mold core is also provided with a guide port corresponding to the screw post forming hole, and the guide port extends inward and downward to guide the screw post forming hole. The width of the forming wall is greater than the width of the tooth forming hole, and a mold core flow-blocking block protrudes outward from the forming wall.

2. The extrusion die for an aluminum profile of a driving device according to claim 1, characterized in that: The lower mold has a welding chamber on its top surface, and the cavity is formed in the middle of the welding chamber. A flow guide block is provided on the outer side of the upper edge of the cavity of the welding chamber, corresponding to the flow guide port. The flow guide block is located on the outer side of the flow guide port after the mold is closed.

3. The extrusion die for an aluminum profile of a drive device according to claim 1, characterized in that: The top surface of the lower mold is provided with a welding chamber, and the cavity is formed in the middle of the welding chamber; the outline of the cavity is teardrop-shaped, including an arc segment, a short straight segment spaced apart from the opening of the arc segment, and two long straight segments connecting the two ends of the short straight segments and the two ends of the arc segment.

4. The extrusion molding die for an aluminum profile of a driving device according to claim 3, characterized in that: The forming holes of the mold core are located on the inner sides of the arc-shaped segment and the two long straight segments, while the upper edges of the arc-shaped segment and the long straight segments of the welding chamber are convexly formed with lower mold flow blocking blocks.

5. The extrusion die for an aluminum profile of a drive device according to claim 4, characterized in that: The lower mold flow blocking block is also provided with a flow guide port flow blocking block at the position corresponding to the flow guide port. The flow guide port flow blocking block is located outside the flow guide port after the mold is closed.

6. The extrusion molding die for an aluminum profile of a driving device according to claim 3, characterized in that: There are three circumferentially spaced flow dividers, and the three flow dividers correspond to the arc-shaped segment and two long straight segments of the lower model cavity, respectively; the short straight segment of the lower model cavity corresponds to the flow divider bridge located between the two flow dividers.

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