Push square extruder

Abstract

The present invention provides a square pushing and extruding machine for extruding and forming an axle, comprising: a frame having a guide rail; a die base assembly located at the front end of the guide rail and mounted on the frame; a driving mechanism located at the rear end of the guide rail and mounted on the frame; a feeding mechanism for conveying a blank of the axle to the die base assembly, located between the die base assembly and the driving mechanism, including a push rod assembly connected to the driving mechanism and a positioning device connected to the push rod assembly, the push rod assembly and the positioning device being slidably connected to the guide rail. When conveying the blank, the positioning device clamps the positioning portion of the blank, and the driving mechanism drives the push rod assembly to push the blank forward and drives the positioning device to slide forward along the guide rail, so that the positioning device always limits the positioning portion to be in the correct position, thereby achieving the purpose of accurately positioning the blank, and further improving the extrusion processing accuracy of the square pushing and extruding machine.

Description

Technical Field

[0001] The present invention relates to the technical field of extrusion molding of automotive parts, and particularly to a square extrusion press. Background Art

[0002] The rectangular part in the middle of an automobile axle can be cold-extruded and formed by a square extrusion press. Among them, the square extrusion press includes a forming die, a driving mechanism and a feeding mechanism. The specific extrusion molding process is as follows: First, place the cylindrical blank to be processed on the centering device of the feeding mechanism. The centering device centers the blank so that the axis of the blank and the longitudinal center line of the die cavity are on the same straight line. Then, start the driving mechanism, and the driving mechanism drives the feeding mechanism to move in the direction close to the forming die to convey the blank into the forming die for extrusion processing. When the extrusion processing of the blank is completed, it is then output by the forming die. However, during the process of the feeding mechanism conveying the blank, the blank is prone to shake in the up and down and left and right directions, resulting in unstable positioning. When the blank is sent into the forming die, it has deviated from the correct processing position, resulting in a low extrusion processing accuracy of the axle and thus reducing the processing accuracy of the square extrusion press. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a square extrusion press with relatively high extrusion processing accuracy.

[0004] To achieve the above purpose, the present invention provides a square extrusion press, adopting the following technical solutions:

[0005] A square extrusion press for extruding and forming an axle, comprising:

[0006] A frame having guide rails;

[0007] A die holder assembly located at the front end of the guide rails and mounted on the frame;

[0008] A driving mechanism located at the rear end of the guide rails and mounted on the frame;

[0009] The feeding mechanism for conveying the blank of the axle to the die base assembly is located between the die base assembly and the driving mechanism, and includes a push rod assembly connected to the driving mechanism and a positioning device connected to the push rod assembly, the push rod assembly and the positioning device are slidably connected to the guide rail, and when the blank is conveyed, the positioning device clamps the positioning portion of the blank, and the driving mechanism drives the push rod assembly to push the blank forward and drives the positioning device to slide forward along the guide rail; the positioning device includes a guide wheel assembly, a support assembly and a positioning assembly located between the support assembly and the die base assembly, the support assembly and the positioning assembly are connected through the push rod assembly and the two ends along the transverse direction of the push extruder are respectively connected to the guide wheel assembly. The guide rail is slidably connected; wherein, the support assembly includes a support seat and two support rollers located on opposite sides of the support seat in the transverse direction of the push-square extruder, the two support rollers are inclined relative to the longitudinal center line of the die base assembly cavity, and a centering cavity for supporting the blank is formed between the two support rollers, and the longitudinal center line of the centering cavity and the longitudinal center line of the die base assembly cavity are located on the same straight line; the positioning assembly includes a connecting plate, a positioning seat and a clamping member for clamping the top surface of the positioning part, and the two ends of the connecting plate along the transverse direction of the push-square extruder are respectively slidably connected to the guide rail through the guide wheel assembly, the positioning seat and the clamping member are installed on the top surface of the connecting plate, and the positioning seat has a card groove for gap fitting with the positioning part.

[0010] Furthermore, the push rod assembly includes a connecting rod, which is connected to the positioning device. When the part to be extruded of the blank is pushed into the die base assembly by the push rod assembly, the driving mechanism drives the connecting rod to pull the positioning device backward until it is reset.

[0011] Furthermore, the push rod assembly further includes a support plate and a push rod for pushing the blank, the support plate is slidably connected to the guide rail, and is connected to the connecting rod and the driving mechanism, and the push rod is connected to the driving mechanism through the support plate; the driving mechanism drives the push rod to push the blank through the support plate, and drives the connecting rod through the support plate to push the positioning device and the blank to slide synchronously.

[0012] Furthermore, the positioning device includes a connecting plate connected to the push rod assembly and two guide wheel assemblies, and the two guide wheel assemblies are respectively connected to the two ends of the connecting plate along the transverse direction of the push-square extruder, and are respectively slidably connected to the guide rail.

[0013] Furthermore, the support assembly and the positioning assembly are respectively arranged along the longitudinal center line of the die base assembly cavity in the longitudinal direction of the push-square extruder, and the relative position between the support assembly and the positioning assembly is adjustable.

[0014] Furthermore, the longitudinal center line of the card slot in the longitudinal direction of the push-square extruder is located on the same line as the longitudinal center line of the die base assembly cavity, and the pressing member is closer to the die base assembly than the positioning seat.

[0015] Furthermore, the pressing member has a cylinder and a pressing rod connected to the cylinder, the pressing rod is used to press the top surface of the positioning portion, and can rotate relative to the cylinder to press or release the blank.

[0016] Furthermore, the positioning device includes at least two connecting ears, and the push rod assembly includes a connecting rod, two of which are respectively connected to the positioning device and are respectively located on both sides of the longitudinal center line of the mold base assembly cavity in the longitudinal direction of the push rod extruder, and one of the connecting rods is connected to the positioning device through at least one connecting ear.

[0017] The beneficial effect of the present invention is that: the push-square extruder of the present invention is provided with a positioning device that can slide along the guide rail. In the process of conveying the blank to the die base assembly, the positioning device clamps the positioning part of the blank, so that the positioning device moves synchronously with the blank, so that the positioning device always limits the positioning part to the correct position, so as to achieve the purpose of accurately positioning the blank, thereby improving the extrusion processing accuracy of the push-square extruder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional combined diagram of the push-square extruder of the present invention;

[0019] Figure 2 for Figure 1 A partial cross-sectional view of part a;

[0020] Figure 3 for Figure 1 Schematic diagram of usage status;

[0021] Figure 4 for Figure 3 A partial cross-sectional view of part b;

[0022] Figure 5 for Figure 3 Schematic diagram of the usage process. DETAILED DESCRIPTION

[0023] Below, in conjunction with the accompanying drawings and specific embodiments, the present invention is further described:

[0024] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated with it, or there may be an intermediate element present at the same time. The terms "mounted", "one end", "the other end" and similar expressions used in this article are only for illustrative purposes.

[0025] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those commonly understood by those skilled in the technical field to which this belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0026] As Figures 1 to 5 shown, the present invention provides a square extrusion press, which defines a vertical direction Z, and a longitudinal direction X and a transverse direction Y that are perpendicular to the vertical direction Z and perpendicular to each other. The square extrusion press is used for cold extrusion forming of an axle, and includes a frame 1, a die seat assembly 2, a driving mechanism 3 and a feeding mechanism 4. The die seat assembly 2, the driving mechanism 3 and the feeding mechanism 4 are all mounted on the frame 1.

[0027] As Figure 3 、 Figure 4 shown, the blank 5 has a positioning portion 51 and a portion to be extruded and processed 52. The positioning portion 51 includes a first positioning portion 511 and a second positioning portion 512. The frame 1 has two side beams 11 arranged side by side, and guide members (not labeled) extending along the longitudinal direction X are respectively welded to the inner side walls of the two side beams 11. The two guide members form a guide rail 12.

[0028] As Figure 1 、 Figure 2 shown, the die seat assembly 2 is located at the front end of the guide rail 12, and the die seat assembly 2 is located between the two side beams 11 and is fixedly connected to the two side beams 11 by screws or welding. It has a cavity for forming the axle. The driving mechanism 3 is located at the rear end of the guide rail 12 and is mounted on the frame 1 by screws or welding. In this embodiment, the driving mechanism 3 is an oil cylinder, which has a telescopic rod 31.

[0029] The feeding mechanism 4 is used to convey the blank 5 of the axle to the die base assembly 2, and is located between the die base assembly 2 and the driving mechanism 3. It includes a push rod assembly 41 connected to the driving mechanism 3 and a positioning device 42 connected to the push rod assembly 41. The push rod assembly 41 and the positioning device 42 are slidably connected to the guide rail 12. In the process of conveying the blank 5 to the die base assembly 2, the positioning device 42 clamps the positioning portion 51 of the blank 5. The driving mechanism 3 drives the push rod assembly 41 to push the blank 5 forward, and drives the positioning device 42 to slide forward along the guide rail 12, so that the positioning device 42 moves synchronously with the blank 5, so that the positioning device 42 always limits the positioning portion 51 to the correct position, so as to achieve the purpose of accurately positioning the blank 5, thereby improving the extrusion processing accuracy of the push square extruder.

[0030] The push rod assembly 41 includes a support plate 412, a push rod 413 for pushing the blank 5, and a connecting rod 411. The support plate 412 is slidably connected to the guide rail 12 and is connected to the connecting rod 411 and the driving mechanism 3. The rear end of the push rod 413 is connected to the driving mechanism 3 through the support plate 412, and the front end is used to push against the blank 5. The front end of the connecting rod 411 is connected to the positioning device 42 by screws, and the rear end is fixedly connected to the support plate 412 by screws. Figure 4 、 Figure 5 As shown, during the process of conveying the blank 5 into the die base assembly 2, the driving mechanism 3 drives the push rod 413 via the support plate 412 to push the blank 5, and drives the connecting rod 411 via the support plate 412 to push the positioning device 42 to slide synchronously with the blank 5. When the portion to be extruded 52 of the blank 5 is pushed into the die base assembly 2 by the push rod assembly 41, the driving mechanism 3 drives the connecting rod 411 via the support plate to pull the positioning device 42 backward until it is reset (returned to the initial position). That is, by providing the connecting rod 411, the positioning device 42 is linked to the push rod assembly 41, so that the positioning device 42 slides back and forth along the longitudinal direction X.

[0031] The positioning device 42 includes a connecting plate 421 connected to the connecting rod 411 and two guide wheel assemblies 422. The two guide wheel assemblies 422 are respectively fixedly connected to the left and right ends of the connecting plate 421 along the transverse direction Y of the pushing and extruding machine by screws, and are respectively slidably connected to the guide rail 12. Specifically, the positioning device 42 further includes a support assembly 423 and a positioning assembly 424 located between the support assembly 423 and the die holder assembly 2. The support assembly 423 and the positioning assembly 424 are respectively slidably connected to the guide rail 12 through the guide wheel assemblies 422 at the left and right ends along the transverse direction Y of the pushing and extruding machine, and are respectively arranged along the longitudinal center line of the die cavity of the die holder assembly in the longitudinal direction X of the pushing and extruding machine. The support assembly 423 and the positioning assembly 424 are connected by the connecting rod 411 and the relative position between the two can be adjusted. By setting the push rod assembly 41 and the positioning assembly 424 with adjustable relative positions, it is possible to adapt to the extrusion processing of axles of different specifications. For example, when the length of the positioning portion 51 changes, first loosen the screw for restricting the relative position between the push rod assembly 41 and the positioning assembly 424, and then slide the push rod assembly 41 or the positioning assembly 424 to adjust the positions of the two relative to the positioning portion 51 to achieve the purpose of accurate positioning.

[0032] As Figure 3 , Figure 4 shown, in this embodiment, the positioning assembly 424 further includes a positioning seat 4241 and a pressing member for pressing the top surface of the positioning portion 51. The positioning seat 4241 and the pressing member are installed on the top surface of the connecting plate 421 by screws. The positioning seat 4241 has a card slot 4242 for clearance fit with the first positioning portion 511. The longitudinal center line of the card slot 4242 in the longitudinal direction X of the pushing and extruding machine is on the same straight line as the longitudinal center line of the die cavity of the die holder assembly 2 to ensure accurate positioning. The pressing member (not labeled) is closer to the die holder assembly 2 than the positioning seat 4241. Specifically, the pressing member has a cylinder (not labeled) and a pressing rod 4243 connected to the cylinder. The pressing rod 4243 is used to press the top surface of the positioning portion 51 and can rotate relative to the cylinder to press or release the blank 5. By setting the card slot 4242 to limit the position of the blank 5 in the radial direction, and by setting the pressing rod 4243 to limit the position of the blank 5 in the vertical direction Z, the positioning assembly 424 can be accurately positioned.

[0033] As Figure 2 , Figure 4As shown, the support assembly 423 includes a mounting plate 4234, a support base 4231, and two support rollers 4232 located on the relative left and right sides of the support base 4231 in the lateral direction Y of the pushing and extruding machine. The left and right ends of the mounting plate 4234 in the lateral direction Y are respectively slidably connected to the guide rail 12 through guide wheel assemblies 422. The support base 4231 is fixed to the mounting plate 4234 by screws or welding. The two support rollers 4232 are inclined with respect to the longitudinal center line of the cavity of the die base assembly. A centering cavity 4233 for supporting the second positioning portion 512 is formed between the two support rollers 4232. The longitudinal center line of the centering cavity 4233 is on the same straight line as the longitudinal center line of the cavity of the die base assembly. By providing the centering cavity 4233, the blank 5 can be positioned in the axial direction, so that the blank 5 is coaxial with the cavity.

[0034] Optionally, the positioning device 42 includes at least two connecting ears 425. One connecting rod 411 is connected to the positioning device 42 through at least one connecting ear 425. In this embodiment, there are two connecting rods 411 and four connecting ears 425. Two of the connecting ears 425 are respectively welded to the connecting plate 421, and the other two connecting ears 425 are welded to the mounting plate 4234. The two connecting ears 425 welded to the connecting plate 421 are respectively located on both sides of the longitudinal center line of the cavity of the die base assembly in the longitudinal direction X of the pushing and extruding machine, and the two connecting ears 425 welded to the mounting plate 4234 are also respectively located on both sides of the longitudinal center line of the cavity of the die base assembly 2 in the longitudinal direction X of the pushing and extruding machine. Specifically, the two connecting ears 425 welded to the connecting plate 421 are respectively located on the relative left and right sides of the positioning seat 4241 in the lateral direction Y, and the two connecting ears 425 welded to the mounting plate 4234 are also respectively located on the relative left and right sides of the positioning seat 4241 in the lateral direction Y. By providing the connecting ears 425, the connection between the support assembly 423 and the positioning assembly 424 and the push rod assembly 41 is realized.

[0035] When extruding and forming the axle, first, the first positioning portion 511 and the second positioning portion 512 of the blank 5 are respectively inserted into the card slots 4242 and the centering cavity 4233. Then, the air cylinder is started to drive the pressing rod 4243 to press the top surface of the first positioning portion 511. Next, the oil cylinder is started. At this time, the telescopic rod 31 of the oil cylinder drives the push rod 413 to push the blank 5 through the support plate 412, and drives the connecting rod 411 to push the positioning component 424 and the support component 423 to slide synchronously with the blank 5 through the support plate 412. When the to-be-extruded processing portion 52 of the blank 5 is pushed into the die base assembly 2 by the push rod 413, the die base assembly 2 extrudes and forms the to-be-extruded processing portion 52. At the same time, the telescopic rod 31 of the oil cylinder drives the connecting rod 411 to pull the positioning component 424 and the support component 423 backward until they are reset. After the extrusion processing is completed, the die base assembly 2 outputs the blank 5. At this time, the cross-section of the to-be-extruded processing portion 52 has been extruded and processed into the required rectangle. Then, the oil cylinder is closed.

[0036] By providing a positioning device that can slide along the guide rail, during the process of conveying the blank to the die base assembly, the positioning device holds the positioning portion of the blank, so that the positioning device moves synchronously with the blank, thereby always limiting the positioning portion to be in the correct position, so as to achieve the purpose of accurately positioning the blank, and further improving the extrusion processing accuracy of the square extrusion machine.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for their axial sub-technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A push-square extruder for extruding axles, characterized by: include: A rack having guide rails; A mold base assembly is located at the front end of the guide rail and is mounted on the frame; A driving mechanism is located at the rear end of the guide rail and is mounted on the frame; The feeding mechanism for conveying the blank of the axle to the die base assembly is located between the die base assembly and the driving mechanism, and includes a push rod assembly connected to the driving mechanism and a positioning device connected to the push rod assembly, the push rod assembly and the positioning device are slidably connected to the guide rail, and when the blank is conveyed, the positioning device clamps the positioning portion of the blank, and the driving mechanism drives the push rod assembly to push the blank forward and drives the positioning device to slide forward along the guide rail; the positioning device includes a guide wheel assembly, a support assembly and a positioning assembly located between the support assembly and the die base assembly, the support assembly and the positioning assembly are connected through the push rod assembly and the two ends along the transverse direction of the push extruder are respectively connected to the guide wheel assembly. The guide rail is slidably connected; wherein, the support assembly includes a support seat and two support rollers located on opposite sides of the support seat in the transverse direction of the push-square extruder, the two support rollers are inclined relative to the longitudinal center line of the die base assembly cavity, and a centering cavity for supporting the blank is formed between the two support rollers, and the longitudinal center line of the centering cavity and the longitudinal center line of the die base assembly cavity are located on the same straight line; the positioning assembly includes a connecting plate, a positioning seat and a clamping member for clamping the top surface of the positioning part, and the two ends of the connecting plate along the transverse direction of the push-square extruder are respectively slidably connected to the guide rail through the guide wheel assembly, the positioning seat and the clamping member are installed on the top surface of the connecting plate, and the positioning seat has a card groove for gap fitting with the positioning part.

2. The push-square extruder according to claim 1, characterized in that: The push rod assembly includes a connecting rod, which is connected to the positioning device. When the part to be extruded of the blank is pushed into the die base assembly by the push rod assembly, the driving mechanism drives the connecting rod to pull the positioning device backward until it is reset.

3. The push-square extruder according to claim 2, characterized in that: The push rod assembly further includes a support plate and a push rod for pushing the blank, the support plate is slidably connected to the guide rail, and is connected to the connecting rod and the driving mechanism, and the push rod is connected to the driving mechanism through the support plate; the driving mechanism drives the push rod to push the blank through the support plate, and drives the connecting rod through the support plate to push the positioning device and the blank to slide synchronously.

4. The push-square extruder according to claim 1, characterized in that: The positioning device includes a connecting plate connected to the push rod assembly and two guide wheel assemblies. The two guide wheel assemblies are respectively connected to the two ends of the connecting plate along the transverse direction of the push rod extruder and are respectively slidably connected to the guide rails.

5. The push square extruder according to claim 1, characterized in that: The supporting assembly and the positioning assembly are respectively arranged along the longitudinal center line of the die base assembly cavity in the longitudinal direction of the push-square extruder, and the relative positions between the supporting assembly and the positioning assembly are adjustable.

6. The push-square extruder according to claim 1, characterized in that: The longitudinal center line of the card slot in the longitudinal direction of the push-square extruder is located on the same line as the longitudinal center line of the die base assembly cavity, and the pressing member is closer to the die base assembly than the positioning seat.

7. The push-square extruder according to claim 1, characterized in that: The pressing member comprises a cylinder and a pressing rod connected to the cylinder. The pressing rod is used to press the top surface of the positioning portion and can rotate relative to the cylinder to press or release the blank.

8. The push square extruder according to claim 1, characterized in that: The positioning device includes at least two connecting ears, and the push rod assembly includes a connecting rod. The connecting rods are respectively connected to the positioning device and are located on both sides of the longitudinal center line of the mold base assembly cavity in the longitudinal direction of the push rod extruder. One of the connecting rods is connected to the positioning device through at least one connecting ear.

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