Rim profile extrusion forming die

Abstract

The utility model discloses a rim profile extrusion forming die which comprises a base, a positioning assembly is arranged at the top of a first driving device and comprises a lower die, the outer wall of a vertical rod is fixedly connected with a convex ball, the bottom end of the vertical rod is fixedly connected with a first spring, and the outer surface of one side of a clamping block is fixedly connected with a second spring. The inner wall of the lower die is slidably connected with a positioning rod, the outer surface of one side of the baffle is fixedly connected with a third spring, the bottom of the upper die is fixedly connected with an ejector rod, the vertical rod is pressed down through the positioning assembly to push the positioning rod to clamp a round hole in the waist of the winding drum, the upper die moves downwards and is attached to the lower die, and the ejector rod continues to push the vertical rod downwards; by means of the structure, it can be guaranteed that the length direction of the winding drum is parallel to the vertical direction, the winding drum is prevented from inclining in the extrusion process, the product precision is improved, and the flexibility of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion molding dies, and more specifically, the utility model relates to an extrusion molding die for rim profiles. Background Art

[0002] A rim is a component for mounting a tire around a wheel, usually composed of a wheel spoke and a wheel rim. The wheel rim is the part in contact with the tire. Due to reasons such as weight reduction, heat dissipation, and installation requirements, holes are designed in the waist of some wheel rims. The traditional extrusion molding die for rim profiles consists of main components such as an upper die, a lower die, extrusion rollers, and a driving device. Both the upper die and the lower die are in a stepped shape. A reel is sleeved on the lower die, and the upper die extrudes and fixes the inside of the reel, and the driving device drives the reel to rotate. Then, the extrusion rollers approach and extrude the waist of the reel to form it. However, since it cannot be ensured that the length direction of the reel is parallel to the vertical direction when placing the reel, the reel tilts during the extrusion process, which affects the product precision to a certain extent. To solve the deficiencies of the prior art, we propose an extrusion molding die for rim profiles. Summary of the Utility Model

[0003] To overcome the above defects of the prior art, the utility model provides an extrusion molding die for rim profiles to solve the problem that the reel tilts during the extrusion process because it cannot be ensured that the length direction of the reel is parallel to the vertical direction when placing the reel, which affects the product precision to a certain extent.

[0004] To solve the above technical problems, the utility model provides the following technical solution: An extrusion molding die for rim profiles, including a base, a first driving device is arranged at the top of the base, an oil cylinder is arranged above the first driving device, one end of the bottom of the push rod of the oil cylinder is fixedly connected to a second driving device, an extrusion roller is arranged on one side of the first driving device, a positioning component is arranged at the top of the first driving device, and an auxiliary component is arranged above the positioning component;

[0005] The positioning component includes a lower mold, which is fixedly installed at the output end of the first driving device. A vertical rod is slidably connected to the inner wall of the lower mold. A convex ball is fixedly connected to the outer wall of the vertical rod. A first spring is fixedly connected to the bottom end of the vertical rod, and the bottom end of the first spring is fixedly connected to the inner wall of the lower mold. A card slot is formed in the top surface of the vertical rod, and a chute is formed in the top surface of the lower mold. A clamping block is slidably connected to the lower mold through the chute. A second spring is fixedly connected to one outer surface of the clamping block, and the end of the second spring away from the clamping block is fixedly connected to the lower mold. A positioning rod is slidably connected to the inner wall of the lower mold. A baffle is fixedly connected to the outer wall of the positioning rod. A third spring is fixedly connected to one outer surface of the baffle, and the end of the third spring away from the central axis of the lower mold is fixedly connected to the inner wall of the lower mold. The output end of the second driving device is fixedly connected to an upper mold, and a ejector rod is fixedly connected to the bottom of the upper mold.

[0006] Among them, there are four of the positioning rods, the baffles and the third springs, and they are annularly arrayed at equal angles around the central axis of the lower mold. The length directions of the four positioning rods are all perpendicular to the central axis of the lower mold, and the convex ball is located above the four positioning rods.

[0007] Among them, the first driving device and the second driving device are respectively used to control the rotation of the lower mold and the upper mold.

[0008] Among them, the auxiliary component includes a cylinder, which is rotatably connected to the top of the second driving device. One end of the push rod of the cylinder is fixedly connected to an extension rod. A bracket is fixedly connected to the top of the second driving device. One end of the extension rod is rotatably connected to a rotating rod, and the center of the rotating rod is rotatably connected to the bracket. A clamping block is fixedly connected to one outer surface of the rotating rod.

[0009] Among them, there are four groups of the auxiliary components, and they are annularly arrayed at equal angles around the central axis of the upper mold.

[0010] Among them, the clamping block is in a stepped shape, and the clamping block is used to cooperate with the upper mold to clamp the processed reel.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] The utility model uses a positioning component, including a lower mold. Press the vertical rod, push the positioning rod to lock the circular hole opened in the waist of the reel, and at the same time, the clamping block locks the vertical rod. The upper mold moves downward and fits with the lower mold. The ejector rod further pushes the vertical rod downward, making the convex ball move away from the four positioning rods. After processing, the oil cylinder drives the upper mold to rise. At this time, the second spring pushes the clamping block to move above the vertical rod, and the first spring pushes the vertical rod upward. The top surface of the vertical rod fits with the bottom surface of the clamping block to prevent the convex ball from pushing the four positioning rods again. After taking out the workpiece, just toggle the clamping block to restore it to its original position with the vertical rod. Using the above structure, the reel workpiece is positioned by the four positioning rods, and the taking out of the workpiece is not affected. It can ensure that the length direction of the reel is parallel to the vertical direction, avoid tilting during the extrusion of the reel, improve the product precision, and enhance the flexibility of the device;

[0013] The utility model uses an auxiliary component, including four clamping blocks. When taking out the workpiece, extend the push rods of the four air cylinders, drive the four rotating rods to rotate around the four brackets. At this time, the four clamping blocks will fit with the concave parts at the waist of the extruded workpiece. When the oil cylinder drives the driving device two to move upward, the four clamping blocks will cooperate with the upper mold to clamp and pull out the workpiece. Finally, contract the push rods of the four air cylinders, make the four rotating rods drive the four clamping blocks to flip, and release the workpiece. Using the above structure, the four air cylinders drive the four clamping blocks to clamp and pull out the workpiece, which can save the user's physical strength and pull out the workpiece vertically without deforming the workpiece, further improving the product precision and enhancing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a schematic diagram of the structure of the positioning component of the utility model;

[0016] Figure 3 is a schematic diagram of the structure of the auxiliary component of the utility model.

[0017] [REFERENCE MARKS]

[0018] 1, Base; 2, Driving device one; 3, Oil cylinder; 4, Driving device two; 5, Extrusion roller; 6, Positioning component; 7, Auxiliary component; 61, Lower mold; 62, Vertical rod; 63, Convex ball; 64, First spring; 65, Card slot; 66, Slide groove; 67, Clamping block; 68, Second spring; 69, Positioning rod; 611, Baffle; 612, Third spring; 613, Upper mold; 614, Ejector rod; 71, Air cylinder; 72, Extension rod; 73, Bracket; 74, Rotating rod; 75, Clamping block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the technical problems, technical solutions, and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] As shown in the attached Figure 1 to the attached Figure 3 An embodiment of the present utility model provides an extrusion forming die for a rim profile, which includes a base 1. A driving device 1 is arranged on the top of the base 1. An oil cylinder 3 is arranged above the driving device 1. One end of the bottom of the push rod of the oil cylinder 3 is fixedly connected to a driving device 2. An extrusion roller 5 is arranged on one side of the driving device 1. A positioning component 6 is arranged on the top of the driving device 1. An auxiliary component 7 is arranged above the positioning component 6;

[0021] The positioning component 6 includes a lower die 61. The lower die 61 is fixedly installed at the output end of the driving device 1. A vertical rod 62 is slidably connected to the inner wall of the lower die 61. A convex ball 63 is fixedly connected to the outer wall of the vertical rod 62. One end of the bottom of the vertical rod 62 is fixedly connected to a first spring 64. The bottom end of the first spring 64 is fixedly connected to the inner wall of the lower die 61. A card slot 65 is formed on the top surface of the vertical rod 62. A chute 66 is formed on the top surface of the lower die 61. A block 67 is slidably connected to the lower die 61 through the chute 66. One side surface of the block 67 is fixedly connected to a second spring 68. And the end of the second spring 68 away from the block 67 is fixedly connected to the lower die 61. A positioning rod 69 is slidably connected to the inner wall of the lower die 61. A baffle 611 is fixedly connected to the outer wall of the positioning rod 69. One side surface of the baffle 611 is fixedly connected to a third spring 612. And the end of the third spring 612 away from the central axis of the lower die 61 is fixedly connected to the inner wall of the lower die 61. The output end of the driving device 2 is fixedly connected to an upper die 613. A ejector rod 614 is fixedly connected to the bottom of the upper die 613.

[0022] Among them, there are four positioning rods 69, baffles 611, and third springs 612, and they are annularly arranged at equal angles around the central axis of the lower die 61. The length directions of the four positioning rods 69 are all perpendicular to the central axis of the lower die 61. The convex ball 63 is located above the four positioning rods 69;

[0023] By pressing the vertical rod 62, the convex ball 63 can be made to push the four positioning rods 69 away from the central axis of the lower die 61, so that the four positioning rods 69 are inserted into the holes formed in the waist of the reel workpiece. And the block 67 can prevent the vertical rod 62 from rebounding. The ejector rod 614 is located directly above the vertical rod 62, and the ejector rod 614 can push the vertical rod 62 further downward.

[0024] Among them, the driving device 1 and the driving device 2 are respectively used to control the rotation of the lower die 61 and the upper die 613;

[0025] Drive the second driving device 4 downward through the oil cylinder 3, so that the lower mold 61 approaches and fits with the upper mold 613. The first driving device 2 and the second driving device 4 fix and rotate the reel workpiece, and cooperate with the second driving device 4 to process it into a wheel rim.

[0026] Among them, the auxiliary component 7 includes a cylinder 71. The cylinder 71 is rotatably connected to the top of the second driving device 4. One end of the push rod of the cylinder 71 is fixedly connected with an extension rod 72. A bracket 73 is fixedly connected to the top of the second driving device 4. One end of the extension rod 72 is rotatably connected with a rotating rod 74, and the center of the rotating rod 74 is rotatably connected with the bracket 73. A clamping block 75 is fixedly connected to the outer surface of one side of the rotating rod 74.

[0027] Among them, there are four groups of auxiliary components 7, and they are annularly arrayed at equal angles around the central axis of the upper mold 613;

[0028] By telescoping the push rod of the cylinder 71, the rotating rod 74 can be driven to rotate, so as to drive the clamping block 75 to flip to the concave part of the waist of the squeezed reel.

[0029] Among them, the clamping block 75 is in a stepped shape, and the clamping block 75 is used to cooperate with the upper mold 613 to clamp the processed reel;

[0030] By driving the second driving device 4 to rise through the oil cylinder 3, the processed workpiece can be lifted by the four clamping blocks 75.

[0031] The working process of the utility model is as follows:

[0032] First, place the roll on top of the lower mold 61, and press the vertical rod 62, so that the convex ball 63 pushes the four positioning rods 69 to lock and position the round hole opened on the waist of the roll. At the same time, the block 67 locks the vertical rod 62 to prevent the convex ball 63 from moving upward. At this time, the oil cylinder 3 drives the upper mold 613 to move downward and fit it with the lower mold 61. While clamping the roll workpiece, the push rod 614 continues to push the vertical rod 62 downward to keep the convex ball 63 away from the four positioning rods 69. At this time, under the push of the four spring three 612, the four positioning rods 69 retract into the lower mold 61, and extrusion molding can begin. After the processing is completed, the oil cylinder 3 drives the upper mold 613 to rise. At this time, the spring two 68 pushes the block 67 to move above the vertical rod 62, and the spring one 64 pushes the vertical rod 62 Move upward. Since the block 67 is outside the slot 65 at this time, the top surface of the vertical rod 62 is in contact with the bottom surface of the block 67, thereby preventing the vertical rod 62 from rising a greater distance to prevent the convex ball 63 from pushing the four positioning rods 69 again. After taking out the workpiece, move the block 67 to restore it and the vertical rod 62 to their original positions. When taking out the workpiece, the four cylinders 71 extend the push rods to drive the four rotating rods 74 to rotate around the four brackets 73. At this time, the four clamping blocks 75 will fit into the concave part of the waist of the extruded workpiece. When the oil cylinder 3 drives the driving device 2 4 to move upward, the four clamping blocks 75 will cooperate with the upper mold 613 to clamp and pull out the workpiece. Finally, the four cylinders 71 retract the push rods to drive the four rotating rods 74 to flip the four clamping blocks 75 and release the workpiece.

[0033] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0034] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A rim profile extrusion die, comprising a base (1), characterized in that, At the top of the base (1), a first driving device (2) is provided. Above the first driving device (2), an oil cylinder (3) is provided. At one end of the bottom of the push rod of the oil cylinder (3), a second driving device (4) is fixedly connected. On one side of the first driving device (2), an extrusion roller (5) is provided. At the top of the first driving device (2), a positioning component (6) is provided. Above the positioning component (6), an auxiliary component (7) is provided; The positioning component (6) includes a lower die (61). The lower die (61) is fixedly installed at the output end of the first driving device (2). A vertical rod (62) is slidably connected to the inner wall of the lower die (61). A convex ball (63) is fixedly connected to the outer wall of the vertical rod (62). At the bottom end of the vertical rod (62), a first spring (64) is fixedly connected. The bottom end of the first spring (64) is fixedly connected to the inner wall of the lower die (61). A clamping groove (65) is formed on the top surface of the vertical rod (62). A sliding groove (66) is formed on the top surface of the lower die (61). A clamping block (67) is slidably connected to the lower die (61) through the sliding groove (66). On one outer surface of the clamping block (67), a second spring (68) is fixedly connected. And the end of the second spring (68) far away from the clamping block (67) is fixedly connected to the lower die (61). A positioning rod (69) is slidably connected to the inner wall of the lower die (61). A baffle (611) is fixedly connected to the outer wall of the positioning rod (69). On one outer surface of the baffle (611), a third spring (612) is fixedly connected. And the end of the third spring (612) far away from the central axis of the lower die (61) is fixedly connected to the inner wall of the lower die (61). At the output end of the second driving device (4), an upper die (613) is fixedly connected. At the bottom of the upper die (613), a ejector rod (614) is fixedly connected.

2. The rim profile extrusion forming die according to claim 1, wherein, There are four positioning rods (69), baffles (611) and third springs (612), and they are circumferentially and equally angularly arranged around the central axis of the lower die (61). The length directions of the four positioning rods (69) are all perpendicular to the central axis of the lower die (61). The convex ball (63) is located above the four positioning rods (69).

3. The rim profile extrusion mold according to claim 1, characterized in that, The first driving device (2) and the second driving device (4) are respectively used to control the rotation of the lower die (61) and the upper die (613).

4. The rim profile extrusion forming die according to claim 1, characterized in that, The auxiliary component (7) includes a cylinder (71). The cylinder (71) is rotatably connected to the top of the second driving device (4). At one end of the push rod of the cylinder (71), an extension rod (72) is fixedly connected. A bracket (73) is fixedly connected to the top of the second driving device (4). One end of the extension rod (72) is rotatably connected to a rotating rod (74), and the center of the rotating rod (74) is rotatably connected to the bracket (73). A clamping block (75) is fixedly connected to one outer surface of the rotating rod (74).

5. The rim profile extrusion mold according to claim 4, characterized in that, There are four groups of auxiliary components (7), and they are circumferentially and equally angularly arranged around the central axis of the upper die (613).

6. The rim profile extrusion mold according to claim 4, characterized in that, The clamping block (75) is in a stepped shape, and the clamping block (75) is used to cooperate with the upper die (613) to clamp the processed drum.

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