A hollow shaft hot pressing forming equipment

Abstract

The present invention relates to the field of automobile parts processing technology. It aims to solve the problems that the traditional rotary forging process for manufacturing hollow shafts has low production efficiency and material utilization rate, and the equipment tonnage is large, resulting in high manufacturing costs. Specifically, it relates to a hollow shaft hot pressing forming equipment, including a hydraulic press, a core mold is provided at the output end of the hydraulic press, and a rotary loading mechanism is also provided on the hydraulic press. The rotary loading mechanism is divided into a material mouth part for loading and unloading materials, a fixing part for fixing the rod material, and a demolding part for preventing the rod material from sticking to the rotary loading mechanism. When the rotary loading mechanism is in working state, the rod material will alternate between the material mouth part, the fixing part and the demolding part in turn. The present application performs a hot pressing forming process through the action of the rotary loading mechanism in conjunction with the hydraulic press, and uses the recess of the wheel disk to drive the rod material to alternate between the material mouth part, the fixing part and the demolding part, so as to realize the continuity of hot pressing, effectively improve the efficiency of hot pressing of the hollow shaft, and avoid material waste.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a hollow shaft hot pressing forming device. Background Art

[0002] The current trend in automobile development is towards lightweighting. The application of hollow shafts can achieve lightweighting while ensuring the strength and rigidity of the axle. The current processes used in the industry for semi-solid hollow shafts include the following methods:

[0003] Step 1: using rotary forging process to manufacture such hollow shaft;

[0004] Step 2: Use welding technology to split the shaft into two parts, machine them into shape, and then weld them together;

[0005] Step 3: Use solid bar stock to finish turning the size required by the drawing.

[0006] The production efficiency and material utilization rate of the process part of the above step one are low, and the equipment tonnage is large, which leads to high manufacturing costs. To address this problem, it is necessary to propose a hollow shaft hot pressing forming equipment. Summary of the Invention

[0007] To solve the above technical problems.

[0008] The present application provides a hollow shaft hot pressing forming device, including a hydraulic press, a core mold is provided at the output end of the hydraulic press, and a rotary loading mechanism is also provided on the hydraulic press. The rotary loading mechanism is distributed with a material mouth part for loading and unloading materials, a fixing part for fixing rod materials, and a demolding part for preventing the rod materials from sticking to the rotary loading mechanism. When the rotary loading mechanism is in working state, the rod materials will alternate between the material mouth part, the fixing part and the demolding part in sequence.

[0009] Preferably, the rotary loading mechanism includes a shell, a wheel is provided inside the shell, at least one notch is provided on the wheel, a rotary driver for driving the wheel to rotate is provided outside the shell, the material mouth part, the fixing part and the demolding part are distributed along the circumferential direction of the wheel, and the notch will pass through the material mouth part, the fixing part and the demolding part during the rotation of the wheel.

[0010] Preferably, a guide disc is provided inside the shell, the guide disc is located at the bottom of the wheel disc, and a slope portion is provided on the top surface of the guide disc, and the slope portion is located below the material mouth portion.

[0011] Preferably, a first linear drive is provided outside the housing, and a clamping plate is provided at the output end of the first linear drive. When the first linear drive is in a working state, the clamping plate is located at the fixed part of the rotary loading mechanism.

[0012] Preferably, the inner wall of the shell is elastically provided with an arc panel, and an anti-rotation body is provided on the arc panel. When the rod is in the demolding part of the rotary loading mechanism, it contacts the anti-rotation body. The outside of the shell is provided with a second linear drive for pushing the arc panel.

[0013] Preferably, the hydraulic press includes a frame, a base is provided on the frame, and a rotary loading mechanism is provided inside the base; and a top frame, which is fixedly mounted above the base through a number of limit rods, and a hydraulic cylinder is provided on the top frame; and a movable seat body, which is slidably provided on the limit rods, and the output end of the hydraulic cylinder is transmission-connected to the movable seat body, and a core mold is provided on the movable seat body.

[0014] Preferably, a continuous feeding mechanism is further included, and a feed channel is provided on the shell. The continuous feeding mechanism is arranged on the hydraulic press, and the discharge end of the continuous feeding mechanism is communicated with the feed channel on the shell.

[0015] Preferably, the continuous feeding mechanism includes a feed plate, which is connected to the feed channel; and a storage component, the discharge end of the storage component is connected to the feed plate, and a monomer loading mechanism is provided on the feed plate, and the working direction of the monomer loading mechanism is toward the feed channel of the shell.

[0016] Preferably, the material storage assembly includes a material storage rack, which is communicated with and fixedly connected to the feed plate. A third linear drive is provided on the material storage rack, and a push plate is provided at the output end of the third linear drive.

[0017] Preferably, the single-body feeding mechanism includes a fourth linear drive, a support clamp is provided at the output end of the fourth linear drive, the support clamp is at the discharge end of the storage rack when the fourth linear drive is not in working state, a buckle clamp is provided on the support clamp for sliding, a fifth linear drive is provided on the support clamp, and the output end of the fifth linear drive is connected to the buckle clamp.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This application uses a rotary loading mechanism in conjunction with a hydraulic press to perform a hot pressing forming process, and utilizes the notches of the wheel to drive the rod material to alternate between the material mouth, the fixing part and the demolding part, thereby achieving the continuity of hot pressing, effectively improving the efficiency of hot pressing of the hollow shaft, and avoiding material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the process flow chart for hot pressing of bar stock;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 3 It is the front view of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the frame, base, rotary loading mechanism and continuous feeding mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the base and the rotary loading mechanism of the present invention;

[0025] Figure 6 A top view of the base and the rotary loading mechanism of the present invention;

[0026] Figure 7 The three-dimensional decomposition structure of the rotary loading mechanism of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 8 The three-dimensional decomposition structure of the rotary loading mechanism of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 9 It is a top view of the frame, base, rotary loading mechanism and continuous feeding mechanism of the present invention;

[0029] Figure 10 Schematic diagram of the three-dimensional structure of the continuous feeding mechanism of the present invention;

[0030] Figure 11 It is a top view of the continuous feeding mechanism of the present invention.

[0031] The numbers in the figure are:

[0032] 1-Hydraulic press; 1a-Frame; 1b-Base; 1b1-Limiting rod; 1c-Moveable seat; 1d-Top frame; 1e-Hydraulic cylinder;

[0033] 2- core mold;

[0034] 3-rotary loading mechanism; 3a-housing; 3a1-feeding channel; 3b-wheel disc; 3b1-recess; 3c-rotational driver; 3d-guide disc; 3d1-slope portion; 3e-first linear driver; 3e1-clamping plate; 3f-arc panel; 3f1-rotation block; 3g-second linear driver;

[0035] 4- material mouth;

[0036] 5-fixed part;

[0037] 6- demoulding part;

[0038] 7-continuous feeding mechanism; 7a-feeding plate; 7b-storage assembly; 7b1-storage rack; 7b2-third linear actuator; 7b3-push plate; 7c-single loading mechanism; 7c1-fourth linear actuator; 7c2-support clamp; 7c3-clamp; 7c4-fifth linear actuator; 7c5-isolating unit; 7c6-separating unit;

[0039] 8-Bar stock. DETAILED DESCRIPTION

[0040] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0041] Example 1

[0042] like Figures 1 to 8 As shown, the following preferred technical solutions are provided:

[0043] A hollow shaft hot press forming device includes a hydraulic press 1, which includes a frame 1a, a base 1b disposed on the frame 1a, and the base 1b is fixedly connected to the frame 1a, and a rotary loading mechanism 3 is disposed inside the base 1b; a top frame 1d, which is fixedly mounted above the base 1b via a plurality of limit rods 1b1, and a hydraulic cylinder 1e is disposed on the top frame 1d; and a movable seat 1c body, which is slidably disposed on the limit rods 1b1, and the output end of the hydraulic cylinder 1e is transmission-connected to the movable seat 1c body, and the movable seat 1c body is provided with a core mold 2;

[0044] The hydraulic press 1 is also provided with a rotary loading mechanism 3, which includes a housing 3a. The housing 3a is cylindrical, and a wheel disc 3b is provided inside the housing 3a. The inner diameter of the housing 3a is consistent with the diameter of the wheel disc 3b, and the wheel disc 3b is rotatably connected to the housing 3a. Three notches 3b1 are provided on the wheel disc 3b. The inner diameter of the notch 3b1 is equal to the diameter of the rod 8. A rotary driver 3c is provided outside the housing 3a to drive the wheel disc 3b to rotate. The feeding mechanism 3 is provided with a feeding opening 4 for feeding and unloading, a fixing portion 5 for fixing the bar material 8, and a demoulding portion 6 for preventing the bar material 8 from sticking to the rotary loading mechanism 3. When the rotary loading mechanism 3 is in operation, the bar material 8 will alternate between the feeding opening 4, the fixing portion 5, and the demoulding portion 6. The feeding opening 4, the fixing portion 5, and the demoulding portion 6 are distributed along the circumference of the wheel disc 3b. During the rotation of the wheel disc 3b, the notch 3b1 will pass through the feeding opening 4, the fixing portion 5, and the demoulding portion 6.

[0045] A guide plate 3d is provided inside the housing 3a. The guide plate 3d is located at the bottom of the wheel disc 3b. A slope portion 3d1 is provided on the top surface of the guide plate 3d. The slope portion 3d1 is located below the material inlet 4. The top of the slope portion 3d1 is higher than the top of the guide plate 3d. The distance from the top surface of the guide plate to the top surface of the wheel disc 3b is greater than the length of the bar 8, and the distance from the top of the slope portion 3d1 to the top surface of the wheel disc 3b is less than the length of the bar 8.

[0046] The inner wall of the housing 3a is provided with a notch, with an arc-shaped plate in the middle of the notch. The arc-shaped plate is used to prevent the rod 8 from falling into the notch. A first linear actuator 3e is provided on the outside of the housing 3a. A clamping plate 3e1 is provided at the output end of the first linear actuator 3e. The clamping plate 3e1 is located in the notch. The inner diameter of the clamping plate 3e1 matches the diameter of the rod 8. When the first linear actuator 3e is in operation, the clamping plate 3e1 is located in the fixed portion 5 of the rotary loading mechanism 3.

[0047] An arc-shaped notch is provided on the inner wall of the shell 3a, and an arc panel 3f is elastically provided inside the arc notch. Several anti-rotation bodies 3f1 are provided on the arc panel 3f. The anti-rotation body 3f1 can be specifically roller-shaped, spherical, etc., and is preferably spherical here. The anti-rotation body 3f1 is made of elastic material, is resistant to high temperature, and has a rough surface with large friction. When the rod 8 is in the demolding part 6 of the rotary loading mechanism 3, it contacts the anti-rotation body 3f1. A second linear drive 3g is provided on the outside of the shell 3a to push the arc panel 3f, and the output end of the second linear drive 3g is connected to the outer arc surface of the arc panel 3f.

[0048] Specifically, in order to solve the technical problems of low production efficiency and material utilization rate of hollow shafts manufactured by traditional rotary forging process, and large equipment tonnage leading to high manufacturing cost, first a solid bar stock 8 is selected, and then the solid bar stock 8 is locally heated to 1000-1200°C, and then the heated bar stock 8 is placed in the feed opening 4 of the rotary wheel loading mechanism, that is, the bar stock 8 is inserted into the notch 3b1 of the wheel disc 3b at the feed opening 4, and the output end of the rotary driver 3c drives the wheel disc 3b to start rotating, and the wheel disc 3b is driven by the rotary driver 3c. The bar 8 at the material inlet 4 is moved to the fixed part 5. At this time, the bar 8 is directly below the core mold 2. The output end of the first linear actuator 3e limits the shape of the bar 8 through the clamping plate 3e1. The main restriction point is to avoid controlling the diameter of the bar 8. Then the hydraulic cylinder 1e descends along the limit rod 1b1 through the movable seat 1c. At the same time, the movable seat 1c drives the core mold 2 to descend. The extrusion mold is used for hot extrusion forming. The extrusion mold includes the core mold 2 and the concave mold cavity. The concave mold cavity is formed by the clamping plate 3e1 and the notch 3b of the wheel 3b. b1, after the hot pressing forming is completed, the hydraulic cylinder 1e controls the core mold 2 to separate from the bar 8 through the movable seat 1c, and the rotary driver 3c drives the wheel 3b to continue to rotate. The wheel 3b drives the hot-extruded bar 8 through the notch 3b1 to pass through the demolding part 6. The hot-pressed bar 8 will stick to the inner wall of the notch 3b1 to a certain extent. When the bar 8 is in the demolding part 6, the second linear driver 3g will push the arc panel 3f close to the inner wall of the shell 3a, so that the several anti-rotation bodies 3f1 on the arc panel 3f are tightly attached to the bar 8. The rod 8 is in close contact with the guide plate 3d, so that the rod 8 is squeezed by the anti-rotation body 3f1 and rotates in a gyratory manner when the wheel disc 3b rotates, thereby causing the rod 8 to lose its adhesion with the inside of the recess 3b1. When the second rod 8 is added and the hot pressing is completed, the wheel disc 3b rotates again, and the first rod 8 added and hot pressed is moved toward the material mouth 4. During the movement, the bottom of the rod 8 rises continuously along the slope 3d1 on the guide plate 3d, so that the top of the rod 8 is higher than the top surface of the wheel disc 3b, making it easier for the staff to take out the rod 8.

[0049] After each rotation of the notch 3b1 of the wheel 3b, the staff can take out the hot-pressed bar material 8 at the material mouth 4 and then feed in the unhot-pressed bar material 8.

[0050] like Figure 3 、 Figure 9 、 Figure 10 and Figure 11 As shown, the following preferred technical solutions are provided:

[0051] The hydraulic press 1 is also provided with a rotary loading mechanism 3, which includes a housing 3a. A wheel disc 3b is provided inside the housing 3a and is rotatably connected to the housing 3a. The wheel disc 3b has four notches 3b1. A rotary driver 3c is provided outside the housing 3a for driving the wheel disc 3b to rotate. A feed opening 4, a fixing portion 5, and a stripping portion are distributed along the circumference of the wheel disc 3b. During the rotation of the wheel disc 3b, the notches 3b1 pass through the feed opening 4, the fixing portion 5, and the stripping portion 6.

[0052] The hollow shaft hot pressing forming equipment also includes a continuous feeding mechanism 7. The housing 3a is further provided with a feed channel 3a1. The continuous feeding mechanism 7 is arranged on the hydraulic press 1. The continuous feeding mechanism 7 includes a feed plate 7a. The feed plate 7a is connected to the feed channel 3a1 and is arranged on the top of the base 1b.

[0053] The storage component 7b, the discharge end of the storage component 7b is connected to the feed plate 7a, and a single-body loading mechanism 7c is provided on the feed plate 7a. The working direction of the single-body loading mechanism 7c is toward the feed channel 3a1 of the shell 3a. The storage component 7b includes a storage rack 7b1, the storage rack 7b1 is connected to the feed plate 7a and fixedly connected, and a third linear drive 7b2 is provided on the storage rack 7b1, and a push plate 7b3 is provided at the output end of the third linear drive 7b2.

[0054] The single-body feeding mechanism 7c includes a fourth linear drive 7c1, and a support clamp 7c2 is provided at the output end of the fourth linear drive 7c1. When the fourth linear drive 7c1 is in a non-working state, the support clamp 7c2 is at the discharge end of the storage rack 7b1, and a buckle clamp 7c3 is slidingly provided on the support clamp 7c2. A fifth linear drive 7c4 is provided on the support clamp 7c2, and the output end of the fifth linear drive 7c4 is connected to the buckle clamp 7c3.

[0055] Specifically, in order to solve the technical problem of how to complete the hot pressing process of the bar material 8 more efficiently, after a notch 3b1 is added to the wheel 3b, a total of four notches 3b1 are formed on the wheel 3b. When the three notches 3b1 are matched with the material inlet portion 4, the fixing portion 5 and the demoulding portion 6 respectively, the fourth notch 3b1 is at the outlet of the material inlet channel 3a1 of the shell 3a. At this time, loading and unloading can be carried out synchronously. The storage rack 7b1 of the discharge assembly carries at least one or more bar materials 8 to be hot pressed. The third linear drive 7b2 pushes the bar material 8 through the push plate 7b3. When it reaches the support clamp 7c2, the fifth linear drive 7c4 drives the buckle frame to approach the bar 8. The separation part 7c6 is provided on the buckle clamp 7c3 to promptly and effectively block the discharge end of the storage rack 7b1. The bar 8 is restricted on all sides by the buckle clamp 7c3 and the support clamp 7c2. The fourth linear drive 7c1 drives the bar 8 to move along the feed plate 7a through the support clamp 7c2. The isolation part 7c5 provided on the support clamp 7c2 replaces the separation part 7c6 to continue to seal the discharge end of the storage rack 7b1, and the bar 8 falls into it when it is conveyed to the fourth recess 3b1.

[0056] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow shaft hot pressing forming device, characterized in that: The invention comprises a hydraulic press (1), wherein the output end of the hydraulic press (1) is provided with a core mold (2), and the hydraulic press (1) is also provided with a rotary loading mechanism (3), wherein the rotary loading mechanism (3) is provided with a material opening portion (4) for loading and unloading materials, a fixing portion (5) for fixing a rod material (8), and a demoulding portion (6) for preventing the rod material (8) from sticking to the rotary loading mechanism (3). When the rotary loading mechanism (3) is in a working state, the rod material (8) will alternate between the material opening portion (4), the fixing portion (5) and the demoulding portion (6) in sequence; The rotary loading mechanism (3) includes a housing (3a), a wheel disc (3b) is provided inside the housing (3a), and at least one notch (3b1) is provided on the wheel disc (3b). A rotary driver (3c) for driving the wheel disc (3b) to rotate is provided outside the housing (3a), and a material inlet portion (4), a fixing portion (5), and a demoulding portion are distributed along the circumference of the wheel disc (3b). During the rotation of the wheel disc (3b), the notch (3b1) passes through the material inlet portion (4), the fixing portion (5), and the demoulding portion (6). A guide disc (3d) is provided inside the housing (3a), the guide disc (3d) is located at the bottom of the wheel disc (3b), and a slope portion (3d1) is provided on the top surface of the guide disc (3d), and the slope portion (3d1) is located below the material inlet portion (4); An arc panel (3f) is elastically provided on the inner wall of the housing (3a), a rotation-blocking body (3f1) is provided on the arc panel (3f), and the rod material (8) contacts the rotation-blocking body (3f1) when it is in the demoulding portion (6) of the rotary loading mechanism (3), and a second linear drive (3g) for pushing the arc panel (3f) is provided on the outside of the housing (3a); It also includes a continuous feeding mechanism (7), a material feeding channel (3a1) is provided on the housing (3a), the continuous feeding mechanism (7) is arranged on the hydraulic press (1), and the discharge end of the continuous feeding mechanism (7) is communicated with the material feeding channel (3a1) on the housing (3a); The continuous feeding mechanism (7) includes a feed plate (7a), the feed plate (7a) being connected to the feed channel (3a1); and a storage assembly (7b), the discharge end of the storage assembly (7b) being connected to the feed plate (7a); a monomer feeding mechanism (7c) is provided on the feed plate (7a), and the working direction of the monomer feeding mechanism (7c) is toward the feed channel (3a1) of the housing (3a); The single-body feeding mechanism (7c) comprises a fourth linear drive (7c1); the output end of the fourth linear drive (7c1) is provided with a supporting clamp (7c2); when the fourth linear drive (7c1) is in a non-operating state, the supporting clamp (7c2) is located at the discharge end of the storage rack (7b1); a buckle clamp (7c3) is slidably provided on the supporting clamp (7c2); a fifth linear drive (7c4) is provided on the supporting clamp (7c2); and the output end of the fifth linear drive (7c4) is connected to the buckle clamp (7c3).

2. The hollow shaft hot pressing forming equipment according to claim 1, characterized in that: A first linear drive (3e) is provided outside the housing (3a), and a clamping plate (3e1) is provided at the output end of the first linear drive (3e). When the first linear drive (3e) is in a working state, the clamping plate (3e1) is located at the fixed portion (5) of the rotary loading mechanism (3).

3. The hollow shaft hot pressing forming equipment according to claim 1, characterized in that: The hydraulic press (1) comprises a frame (1a), a base (1b) is provided on the frame (1a), a rotary loading mechanism (3) is provided inside the base (1b); a top frame (1d), the top frame (1d) is fixedly mounted above the base (1b) via a plurality of limit rods (1b1), a hydraulic cylinder (1e) is provided on the top frame (1d); and a movable seat (1c) body, the movable seat (1c) body is slidably provided on the limit rods (1b1), an output end of the hydraulic cylinder (1e) is transmission-connected to the movable seat (1c) body, and a core mold (2) is provided on the movable seat (1c) body.

4. The hollow shaft hot pressing forming equipment according to claim 1, characterized in that: The material storage assembly (7b) comprises a material storage rack (7b1), the material storage rack (7b1) is communicated with and fixedly connected to the feed plate (7a), a third linear drive (7b2) is provided on the material storage rack (7b1), and a push plate (7b3) is provided at the output end of the third linear drive (7b2).

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