Die ejection structure of large crankshaft forge piece

Abstract

The utility model discloses a die ejection structure of a large crankshaft forge piece, and relates to the technical field of industrial production. The device comprises an ejection mold, an ejection plate is arranged at the bottom of a lower mold, ejection rods are fixed to the left side and the right side of the upper wall of the ejection plate, and ejection heads are fixed to the upper ends of the ejection rods; first hydraulic cylinders are fixed to the left side and the right side of the mounting frame correspondingly, a bearing block is arranged below the first hydraulic cylinders, an electric push rod is fixed to the outer end of the bearing block, rollers are arranged on the front side and the rear side of the lower end of the mounting frame correspondingly, and motors are fixed to the positions, corresponding to the side wall of the mounting frame, of the two rollers located on the front side. The two sides of the forge piece body are evenly stressed in the drawing process through the two ejector rods, the problem that the precision cannot be guaranteed due to the fact that the straightness of a crankshaft is reduced due to the die clamping phenomenon is solved, the forge piece body is taken down through cooperation of the bearing block, the idler wheels and the motor, use is more convenient, and the production efficiency is improved. And the production efficiency can be improved to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial production, in particular to a die ejection structure of a large crankshaft forging. Background Art

[0002] An oil extraction machine is a device used to extract oil. It is widely used in oil fields to extract oil resources from underground reservoirs. The crankshaft of an oil extraction machine is a key component in the oil extraction machine. Its main function is to convert the up and down movement of the oil extracted from the underground into rotational motion to drive the pump rod or other working parts of the oil extraction machine. The crankshaft of a large oil extraction machine is heavy and long, with 5 crank turns evenly distributed at 72°. The mold cavity used in the production of the crankshaft is complex and difficult to demold, so a ejecting device is required to assist in demolding.

[0003] However, the existing technology has the following shortcomings:

[0004] 1. In the prior art, when demolding, the ejector rod arranged at the middle position of the lower mold moves upward to lift up the crankshaft and eject the crankshaft. However, in actual use, the crankshaft is stuck in the mold cavity unevenly, resulting in one end of the crankshaft being ejected while the other end is stuck when the ejector rod is pushing the material, which reduces the straightness of the crankshaft and makes it impossible to ensure the accuracy.

[0005] 2. In the prior art, after the crankshaft is lifted up, an external lifting device or a mobile device is needed to remove the crankshaft. However, in actual operation, due to the high frequency of use of the external lifting device or the mobile device during production, the external lifting device or the mobile device may be used in other processes, resulting in the inability to remove the crankshaft in time for the production of the next crankshaft, which is not only inconvenient to use but also reduces production efficiency. Utility Model Content

[0006] The utility model aims to provide a die ejection structure for large crankshaft forgings, which makes it possible to balance the forces on both sides of the forging body during the demolding process through two ejection rods, and remove the forging body through the cooperation of a bearing block, a roller and a motor, thereby solving the problem that the prior art is prone to die jamming, which leads to a decrease in the straightness of the crankshaft and the inability to ensure the accuracy, and the prior art is unable to remove the crankshaft in time for the production of the next crankshaft because the external lifting equipment or the moving equipment is used in other processes, which is not only troublesome to use but also reduces the production efficiency.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a die ejection structure for large crankshaft forgings, comprising an ejection die, the ejection die comprising a forging body, an upper die and a lower die are respectively arranged on the upper and lower sides of the outer side of the forging body, an ejection plate is arranged at the bottom of the lower die, ejection rods are fixed on the left and right sides of the upper wall of the ejection plate, and an ejection head is fixed on the upper end of the ejection rod;

[0009] A material unloading component is arranged on the outside of the ejecting mold, and the material unloading component includes a mounting frame, a hydraulic cylinder 1 is fixed on both sides of the left and right sides of the mounting frame, a bearing block is arranged below the hydraulic cylinder 1, an electric push rod is fixed on the outer end of the bearing block, rollers are arranged on the front and rear sides of the lower end of the mounting frame, and a motor is fixed on the side wall of the mounting frame corresponding to the position of the two rollers on the front side.

[0010] Furthermore, the upper wall of the ejector head is in contact with the forging body, the ejector head is clearance-matched with the lower die, and the ejector head is fixedly connected to the ejector rod by bolts.

[0011] Furthermore, a receiving groove is provided at the bottom of the lower mold, and a ejector plate is located inside the receiving groove, and a hydraulic cylinder 2 is fixed to the lower wall of the ejector plate.

[0012] Furthermore, legs are fixed at the four corners of the lower wall of the lower mold.

[0013] Furthermore, the mounting frame is U-shaped, and angle plates are fixed to the left and right corners of the inner side of the mounting frame, and a reinforcement plate is fixed to the upper wall of the inner side of the mounting frame.

[0014] Furthermore, a slide plate is fixed to the lower end of the hydraulic cylinder 1, and limit strips are symmetrically fixed to the upper wall of the corresponding bearing block in front and rear of the slide plate, and the cross section of the limit strip is L-shaped.

[0015] Furthermore, a slot is provided on the inner side of the bearing block, a movable plate is fixed to the outer end of the electric push rod, guide bars are symmetrically fixed to the side walls of the mounting frame in front and rear of the movable plate, and the cross section of the guide bar is L-shaped.

[0016] Furthermore, guide rails are arranged below the left and right sides of the mounting frame, and the cross-section of the guide rails is concave. The bottom of the roller is located in the groove in the guide rails. A rotating rod is fixed at the middle position of the outer side wall of the roller, and the rotating rod is rotatably connected to the mounting frame through a bearing.

[0017] Furthermore, the power output shaft of the motor is fixedly connected to the corresponding rotating rod.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model provides two ejector rods to form a double ejector structure. The ejector plate pushes the two ejector rods at the same time so that the ejector head ejects the forging body in a balanced manner. The forging body will not be deformed due to single-end die jamming. The utility model overcomes the problem of uneven force during ejection caused by single-end die jamming when the forging body is ejected from the die, which reduces the straightness of the forging. The utility model also overcomes the problem of die jamming of the forging body, ensures the quality of the forging body, and solves the problem that the prior art is prone to die jamming, which reduces the straightness of the crankshaft and causes the accuracy to be unable to be guaranteed.

[0020] 2. The utility model is provided with a motor, a roller, a bearing block, a hydraulic cylinder and an electric push rod. After the forging body is ejected, the bearing block is moved toward the forging body by the electric push rod, and the two ends of the forging body are inserted into the slots. The forging body is moved under the action of the motor driving the roller to rotate, and then the hydraulic cylinder is operated to place the forging body on the placement platform. No external lifting equipment or moving equipment is required, so it is more convenient to use and can also improve production efficiency to a certain extent. It solves the problem in the prior art that the crankshaft cannot be removed in time for the production of the next crankshaft because the external lifting equipment or moving equipment is used in other processes, which is not only troublesome to use but also reduces production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0022] Figure 1 This is the overall structural diagram of the die ejector structure for large crankshaft forgings;

[0023] Figure 2 It is a vertical cross-sectional structural diagram of the die top material structure of a large crankshaft forging;

[0024] Figure 3 This is a structural diagram of the ejection die in the ejection structure of the die for large crankshaft forgings;

[0025] Figure 4 This is a structural diagram of the blanking component in the die top material structure of a large crankshaft forging.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Material removal assembly; 101. Mounting frame; 1011. Reinforcement plate; 1012. Angle plate; 1013. Guide strip; 102. Electric push rod; 1021. Moving plate; 103. Hydraulic cylinder one; 1031. Slide plate; 104. Carrying block; 1041. Limiting strip; 1042. Slot; 105. Roller; 1051. Rotating rod; 106. Guide rail; 107. Motor; 2. Ejection die; 201. Upper die; 202. Forging body; 203. Lower die; 2031. Receiving groove; 2032. Support leg; 204. Ejection head; 205. Ejection rod; 206. Ejection plate; 207. Hydraulic cylinder two;. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figures 1 to 3 As shown, the utility model is a die ejection structure for large crankshaft forgings, including an ejection die 2, the ejection die 2 includes a forging body 202, the forging body 202 is a large crankshaft, the upper and lower sides of the outer side of the forging body 202 are respectively provided with an upper die 201 and a lower die 203, the upper die 201 and the lower die 203 constitute a die for producing large crankshafts, the bottom of the lower die 203 is provided with an ejection plate 206, providing a mounting platform for an ejection rod 205, the left and right sides of the upper wall of the ejection plate 206 are fixed with ejection rods 205, providing a mounting platform for an ejection head 204, the upper end of the ejection rod 205 is fixed with an ejection head 204, and the ejection head 204 is used to realize the operation of ejecting the forging body 202;

[0030] When the above arrangement is used, after the upper die 201 is moved upward, the movable end of the second hydraulic cylinder 207 is extended to drive the ejection plate 206 to move upward, thereby driving the two ejection rods 205 to move upward, and then the two ejection heads 204 to move upward, and finally driving the forging body 202 to move upward to complete the operation of ejecting the forging body 202;

[0031] The upper wall of the ejector head 204 contacts the forging body 202, and the ejector head 204 is clearance-matched with the lower die 203. The ejector head 204 is fixedly connected to the ejector rod 205 by bolts, so that the ejector head 204 is detachable for easy maintenance and replacement.

[0032] A receiving groove 2031 is provided at the bottom of the lower mold 203 to provide a moving space for the ejector plate 206, and the ejector plate 206 is located inside the receiving groove 2031. A hydraulic cylinder 207 is fixed to the lower wall of the ejector plate 206 to drive the ejector plate 206 to move;

[0033] Support legs 2032 are fixed at the four corners of the lower wall of the lower mold 203 to provide support for the lower mold 203. At the same time, the lower end of the hydraulic cylinder 207 and the lower end of the support legs 2032 are fixedly connected to the installation platform.

[0034] See also Figure 1 , 2 As shown in Figures 4 and 5, a blanking assembly 1 is provided on the outside of the ejection die 2. The blanking assembly 1 includes a mounting frame 101. A hydraulic cylinder 103 is fixed on both sides of the mounting frame 101 for driving a bearing block 104 to move up and down. A bearing block 104 is provided below the hydraulic cylinder 103 for bearing the weight of the forging body 202. An electric push rod 102 is fixed on the outer end of the bearing block 104 for driving the bearing block 104 to move left and right. Rollers 105 are provided on both sides of the front and rear ends of the lower end of the mounting frame 101. A motor 107 is fixed on the side wall of the mounting frame 101 corresponding to the position of the two rollers 105 on the front side. The corresponding rollers 105 are driven to rotate by the motor 107 to move the blanking assembly 1.

[0035] According to the above arrangement, after the forging body 202 is lifted up, the hydraulic cylinder 103 is operated to drive the bearing block 104 to a height at which the forging body 202 can be inserted into the slot 1042. At this time, the electric push rod 102 is extended to drive the bearing block 104 to move until the two ends of the forging body 202 are inserted into the corresponding slots 1042. At this time, the motor 107 is operated to make the roller 105 rotate along the guide rail 106, so that the blanking assembly 1 drives the forging body 202 to move to a suitable position, and the hydraulic cylinder 103 is extended to drive the bearing block 104 to move downward, so that the forging body 202 moves downward until the forging body 202 is placed on the placement platform.

[0036] The mounting frame 101 is U-shaped, and angle plates 1012 are fixed at the left and right corners of the inner side of the mounting frame 101. The angle plates 1012 are triangular in shape and are used to improve the structural strength of the corners of the mounting frame 101. A reinforcing plate 1011 is fixed to the upper wall of the inner side of the mounting frame 101 to improve the structural strength of the middle position of the upper wall of the mounting frame 101.

[0037] A slide plate 1031 is fixed to the lower end of the hydraulic cylinder 103. When the electric push rod 102 is working, the bearing block 104 can move relative to the slide plate 1031. The front and rear of the slide plate 1031 are symmetrically fixed with limit strips 1041 corresponding to the upper wall of the bearing block 104, and the cross section of the limit strips 1041 is L-shaped. Through the setting of the limit strips 1041, the bearing block 104 can only move left and right relative to the slide plate 1031.

[0038] A slot 1042 is provided on the inner side of the bearing block 104 for accommodating the end of the forging body 202. A moving plate 1021 is fixed to the outer end of the electric push rod 102. When the hydraulic cylinder 103 is working, the moving plate 1021 moves relative to the mounting frame 101. Guide bars 1013 are symmetrically fixed to the front and rear of the moving plate 1021 corresponding to the side walls of the mounting frame 101, and the cross section of the guide bar 1013 is L-shaped, so that the moving plate 1021 can only move up and down and will not be separated from the mounting frame 101.

[0039] Guide rails 106 are provided below the left and right sides of the mounting frame 101, which are used to make the roller 105 move only in a straight line and limit the moving path of the roller 105. The cross section of the guide rail 106 is concave, and the bottom of the roller 105 is located in the groove in the guide rail 106. A rotating rod 1051 is fixed at the middle position of the outer side wall of the roller 105, and the rotating rod 1051 is rotatably connected to the mounting frame 101 through a bearing. When the motor 107 is working, the rotating rod 1051 and the mounting frame 101 rotate relatively.

[0040] The power output shaft of the motor 107 is fixedly connected to the corresponding rotating rod 1051 , so that the motor 107 drives the corresponding rotating rod 1051 to rotate, thereby rotating the roller 105 .

[0041] The motor 107 and the electric push rod 102 in the die ejection structure of the large crankshaft forging are electrically connected to the external power supply through conductive wires. At the same time, the motor 107 and the electric push rod 102 are both existing technologies and their models are not limited here.

[0042] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A die ejection structure for a large crankshaft forging, comprising an ejection die (2), characterized in that: The ejection die (2) comprises a forging body (202), an upper die (201) and a lower die (203) are respectively arranged on the upper and lower sides of the forging body (202), an ejection plate (206) is arranged at the bottom of the lower die (203), ejection rods (205) are fixed on the left and right sides of the upper wall of the ejection plate (206), and an ejection head (204) is fixed on the upper end of the ejection rod (205); A material removal component (1) is arranged outside the ejection mold (2), and the material removal component (1) comprises a mounting frame (101), a hydraulic cylinder 1 (103) is fixed on both the left and right sides of the mounting frame (101), a bearing block (104) is arranged below the hydraulic cylinder 1 (103), an electric push rod (102) is fixed to the outer end of the bearing block (104), rollers (105) are arranged on both the front and rear sides of the lower end of the mounting frame (101), and a motor (107) is fixed at the position of the two rollers (105) on the front side corresponding to the side wall of the mounting frame (101); A slide plate (1031) is fixed at the lower end of the hydraulic cylinder 1 (103), and limit strips (1041) are symmetrically fixed in front and rear of the slide plate (1031) corresponding to the upper wall of the bearing block (104), and the cross section of the limit strip (1041) is L-shaped; A slot (1042) is provided on the inner side of the bearing block (104), a movable plate (1021) is fixed to the outer end of the electric push rod (102), guide bars (1013) are symmetrically fixed to the front and rear of the movable plate (1021) corresponding to the side walls of the mounting frame (101), and the cross section of the guide bar (1013) is L-shaped.

2. The die ejection structure for large crankshaft forgings according to claim 1, characterized in that: The upper wall of the ejector head (204) is in contact with the forging body (202), the ejector head (204) is clearance-matched with the lower die (203), and the ejector head (204) is fixedly connected to the ejector rod (205) via bolts.

3. The die ejection structure for large crankshaft forgings according to claim 2, characterized in that: The bottom of the lower mold (203) is provided with a receiving groove (2031), and the ejector plate (206) is located inside the receiving groove (2031), and a second hydraulic cylinder (207) is fixed to the lower wall of the ejector plate (206).

4. The die ejection structure for large crankshaft forgings according to claim 3, characterized in that: Support legs (2032) are fixed at the four corner positions of the lower wall of the lower mold (203).

5. The die ejection structure for large crankshaft forgings according to claim 1, characterized in that: The mounting frame (101) is arranged in a U shape, and angle plates (1012) are fixed at the left and right corners inside the mounting frame (101), and a reinforcing plate (1011) is fixed to the upper wall inside the mounting frame (101).

6. The die ejection structure for large crankshaft forgings according to claim 1, characterized in that: Guide rails (106) are provided below both left and right sides of the mounting frame (101), and the cross section of the guide rails (106) is concave; the bottom of the roller (105) is located in a groove in the guide rails (106); a rotating rod (1051) is fixed at the middle position of the outer side wall of the roller (105), and the rotating rod (1051) is rotatably connected to the mounting frame (101) via a bearing.

7. The die ejection structure for large crankshaft forgings according to claim 6, characterized in that: The power output shaft of the motor (107) is fixedly connected to the corresponding rotating rod (1051).

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