Press machine used in precision shaft production process

Abstract

The utility model belongs to the technical field of press machines, and particularly relates to a press machine used in the process of producing precision shafts, which comprises a machining table, four supporting plates distributed in a rectangular shape are fixedly connected to the upper end of the machining table, a device box is fixedly connected to the upper ends of the four supporting plates together, two hydraulic cylinders are fixedly installed in the device box, and the two hydraulic cylinders are fixedly connected to the machining table. The telescopic ends of the two hydraulic cylinders extend to the position below the device box and are jointly and fixedly connected with an upper die plate, and a lower die plate corresponding to and matched with the upper die plate in position is arranged at the upper end of the machining table. According to the utility model, the cold-pressed precision shaft mold can be automatically moved to the demolding table for automatic demolding, the demolding work is simple and convenient, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press machine technical field especially relates to a press machine used in the production precision shaft process. BACKGROUND

[0002] The press machine (including punch press, hydraulic machine) is a kind of general-purpose press machine with exquisite structure. It has the characteristics of wide application and high production efficiency, and can be widely applied to cutting, punching, blanking, bending, riveting and forming processes. Through the strong pressure applied to the metal blank, the metal is plastically deformed and fractured to process into parts.

[0003] In the process of precision shaft, cold extrusion press is used, cold extrusion is a kind of high-precision forming technology, which is usually used to produce high-precision and complex-shaped precision shaft. The cold extrusion press uses high pressure to extrude the metal material at room temperature. The principle is to press the metal material into the mold through the cold extrusion press to form the required precision shaft shape. However, after the existing cold extrusion press is extruded and formed, the precision shaft located in the heavy grinding tool cannot be easily demolded due to the complexity of the grinding tool, and the manual post-demolding work greatly wastes the production efficiency.

[0004] Therefore, we propose a press machine used in the production of precision shaft to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a press machine used in the production of precision shaft.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A press machine used in the production of precision shaft, comprising a machining table, four support plates are fixedly connected to the upper end of the machining table in a rectangular distribution, a device box is fixedly connected to the upper end of the four support plates, two hydraulic cylinders are fixedly installed in the device box, the extension ends of the two hydraulic cylinders extend below the device box and are fixedly connected to an upper die plate, a lower die plate corresponding to the position of the upper die plate is arranged on the upper end of the machining table, three die grooves are formed in the lower die plate, and air holes communicating with the die grooves are formed at the corresponding positions of the lower die plate at the lower end of each die groove.

[0008] A demolding table is connected to the right end of the machining table, the demolding table is in the shape of [ when viewed from above, three telescopic cylinders are fixedly installed below the demolding table, the extension ends of each telescopic cylinder are fixedly connected to a contact plate, an air groove is formed in the upper end of each contact plate, and a gas pipe communicating with the air groove is arranged behind each contact plate.

[0009] The processing table and the demolding table are provided with a moving mechanism.

[0010] Preferably, two spaced support rollers are rotatably connected between the inner walls of the front and rear of the demolding table.

[0011] Preferably, the moving mechanism comprises two vertical plates fixedly connected to the upper end of the demolding table, left end blocks fixedly connected to the opposite side of each of the two left support plates, right end blocks fixedly connected to the opposite side of each of the two vertical plates, threaded rods rotatably connected between the left end blocks and the right end blocks corresponding to each other, sliding rods fixedly connected between the left end blocks and the right end blocks corresponding to each other, two L-shaped limiting push plates sleeved on the threaded rods and the sliding rods on the same side, and four limiting push plates arranged in a rectangular shape and respectively in contact with the left and right sides of the lower die plate.

[0012] Preferably, the left end of each of the two threaded rods penetrates through the left end block and is fixedly sleeved with a first bevel gear, the left end of each of the two left support plates is fixedly connected with a fixed plate, a transmission rod is rotatably connected between the two fixed plates, two second bevel gears are fixedly sleeved on the transmission rod, the two second bevel gears are vertically engaged with the two first bevel gears respectively, and a driving motor is fixedly installed on the front fixed plate to drive the transmission rod to rotate.

[0013] Preferably, the three air pipes are in common communication with an air pump at the end away from the contact plate.

[0014] Preferably, the distribution interval of the three air grooves is the same as that of the three air holes.

[0015] Compared with the prior art, the device has the following advantages:

[0016] 1. By arranging the air holes, the contact plates, the air grooves and the telescopic air cylinders, after cold extrusion forming of the precision shaft, the lower die plate can be moved to the demolding table, the three telescopic air cylinders can drive the three contact plates to contact and abut against the lower end of the lower die plate, the three air holes at the lower end of the lower die plate can be in communication with the three air grooves respectively, high-pressure air can be pumped into the three air grooves through the air pump, the precision shaft cold-pressed and formed in the die groove can be blown away by the air holes in communication with the air grooves, and the precision shaft can be demolded, so that it can be directly taken out without manual knocking of the die, the demolding work is simple and convenient, and the production efficiency is improved.

[0017] 2. By arranging the moving mechanism, when the driving motor drives the transmission rod to rotate, the two threaded rods can be synchronously rotated under the transmission of the first bevel gears and the second bevel gears, and the four limiting push plates can be synchronously moved horizontally, so that the driving motor can control the movement of the lower die plate, thereby facilitating the back-and-forth movement of the lower die plate between the processing table and the demolding table, and the movement work is completely automatic without manual carrying.

[0018] Therefore, the precision shaft mold after cold-pressing can be automatically moved to the demolding table to perform automatic demolding, the demolding work is simple and convenient, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of a press machine used in the production of precision shafts according to the present application is shown in the drawings;

[0020] Figure 2 Another perspective view of the press machine used in the production of precision shafts according to the present application is shown in the drawings;

[0021] Figure 3 For Figure 2 An enlarged structural schematic view of the middle A;

[0022] Figure 4 A partial structure perspective view of the press machine used in the production of precision shafts according to the present application is shown in the drawings.

[0023] In the drawings: 1 processing table, 2 support plate, 3 device box, 4 hydraulic cylinder, 5 upper mold plate, 6 lower mold plate, 7 mold groove, 8 air hole, 9 demolding table, 10 supporting roller, 11 vertical plate, 12 left end block, 13 right end block, 14 threaded rod, 15 sliding rod, 16 limit push plate, 17 first bevel gear, 18 fixed plate, 19 transmission rod, 20 second bevel gear, 21 driving motor, 22 telescopic air cylinder, 23 contact plate, 24 air groove, 25 air pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0025] Referring to Figures 1-4A press machine used in the production of precision shafts, comprising a machining table 1, the upper end of which is fixedly connected with four support plates 2 distributed in a rectangular shape, which serve to support. The upper ends of the four support plates 2 are fixedly connected with a device box 3, two hydraulic cylinders 4 are fixedly installed in the device box 3, the extension ends of the two hydraulic cylinders 4 extend below the device box 3 and are fixedly connected with an upper die plate 5, and the two hydraulic cylinders 4 work synchronously to drive the upper die plate 5 to move vertically. The upper end of the machining table 1 is provided with a lower die plate 6 corresponding in position and matching the upper die plate 5, the lower die plate 6 is a concave die, and the upper die plate 5 is a convex die. When the upper die plate 5 moves downward and closes with the lower die plate 6, cold extrusion forming work can be carried out. Three die grooves 7 are formed in the lower die plate 6, the die grooves 7 are shaped as the precision shafts required, and the lower end of the upper die plate 5 is provided with corresponding protruding modules. Gas holes 8 are formed in the lower end of the lower die plate 6 and at positions corresponding to the die grooves 7, the gas holes 8 are in communication with the die grooves 7, the lower die plate 6 is relatively thick, and the gas holes 8 are relatively small, so that metal material cannot be extruded out of the die from the gas holes 8, and the gas holes 8 are in the shape of a horn with a wide lower end and a narrow upper end.

[0026] A demolding table 9 is connected to the right end of the machining table 1, the demolding table 9 is in the shape of "[", two support rollers 10 are rotatably connected between the front and rear inner walls of the demolding table 9, which serve to support the lower die plate 6, three telescopic cylinders 22 are fixedly installed below the demolding table 9, the extension ends of the telescopic cylinders 22 are fixedly connected with contact plates 23, gas grooves 24 are formed in the upper ends of the contact plates 23, gas pipes 25 are provided at the rear of the contact plates 23 and in communication with the gas grooves 24, a gas pump is in communication with the three gas pipes 25 away from the contact plates 23, and the distribution interval of the three gas grooves 24 is the same as that of the three gas holes 8. When the lower die plate 6 moves to the demolding table 9, the three telescopic cylinders 22 can drive the three contact plates 23 to contact and abut against the lower end of the lower die plate 6, at this time, the three gas holes 8 in the lower end of the lower die plate 6 are in communication with the three gas grooves 24 respectively, at this time, high-pressure air is pumped into the three gas grooves 24 through the gas pump, and the precision shafts cold-pressed and formed in the die grooves 7 can be blown away by the gas holes 8 in communication with the gas grooves 24, so that they can be demolded and directly taken out without manual knocking of the die, the demolding work is simple and convenient, and the production efficiency is improved.

[0027] The processing table 1 and the demolding table 9 are provided with a moving mechanism, the moving mechanism comprises two vertical plates 11 fixedly connected to the upper end of the demolding table 9, the two supporting plates 2 located on the left side are fixedly connected with left end blocks 12 on the opposite sides, the two vertical plates 11 are fixedly connected with right end blocks 13 on the opposite sides, the left end blocks 12 and the right end blocks 13 corresponding to each other are jointly and rotatably connected with threaded rods 14, the left end blocks 12 and the right end blocks 13 corresponding to each other are jointly and fixedly connected with slide rods 15, the threaded rods 14 and the slide rods 15 located on the same side are jointly and sleeved with two L-shaped limiting push plates 16, the limiting push plates 16 are threadedly connected with the threaded rods 14 and are slidably connected with the slide rods 15. The four limiting push plates 16 are arranged in a rectangular shape and are in contact with the left and right sides of the lower die plate 6 respectively, and when the threaded rods 14 rotate, the corresponding two limiting push plates 16 can be driven to move synchronously horizontally.

[0028] The left ends of the two threaded rods 14 are both penetrated through the left end blocks 12 and are fixedly sleeved with first bevel gears 17, the left ends of the two supporting plates 2 located on the left side are fixedly connected with fixed plates 18, the two fixed plates 18 are jointly and rotatably connected with a transmission rod 19, the transmission rod 19 is fixedly sleeved with two second bevel gears 20, the two second bevel gears 20 are perpendicularly engaged with the two first bevel gears 17 respectively, and the fixed plate 18 located in front is fixedly installed with a driving motor 21 for driving the transmission rod 19 to rotate. Specifically, when the driving motor 21 drives the transmission rod 19 to rotate, the two threaded rods 14 can rotate synchronously under the transmission of the first bevel gears 17 and the second bevel gears 20, and the four limiting push plates 16 can move synchronously horizontally, and at this time, the driving motor 21 can control the movement of the lower die plate 6, so that the lower die plate 6 can be moved back and forth between the processing table 1 and the demolding table 9, and the moving work is completely automatically performed without manual carrying.

[0029] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A press machine used in a process of producing a precision shaft, comprising a machining table (1), characterized in that, The upper end of the processing table (1) is fixedly connected with four rectangularly distributed supporting plates (2), the upper ends of the four supporting plates (2) are fixedly connected with a device box (3), two hydraulic cylinders (4) are fixedly installed in the device box (3), the telescopic ends of the two hydraulic cylinders (4) extend below the device box (3) and are fixedly connected with an upper die plate (5), the upper end of the processing table (1) is provided with a lower die plate (6) corresponding to the position of the upper die plate (5) and matched with the upper die plate (5), three die grooves (7) are formed in the lower die plate (6), and air holes (8) in communication with the die grooves (7) are formed in the lower end of the lower die plate (6) and at the positions corresponding to the die grooves (7). The right end of the processing table (1) is connected with a demolding table (9), the demolding table (9) is in the shape of "[", three telescopic air cylinders (22) are fixedly installed below the demolding table (9), the telescopic ends of the telescopic air cylinders (22) are fixedly connected with contact plates (23), air grooves (24) are formed in the upper ends of the contact plates (23), and air pipes (25) in communication with the air grooves (24) are arranged behind the contact plates (23). The processing table (1) and the demolding table (9) are provided with a moving mechanism.

2. A press machine used in a process of producing a precision shaft according to claim 1, wherein Two spaced supporting rollers (10) are rotatably connected between the front and rear inner walls of the demolding table (9).

3. A press machine used in a process of producing a precision shaft according to claim 1, wherein The moving mechanism comprises two vertical plates (11) fixedly connected to the upper end of the demolding table (9), left end blocks (12) are fixedly connected to the opposite sides of the two supporting plates (2) on the left side, right end blocks (13) are fixedly connected to the opposite sides of the two vertical plates (11), screw rods (14) are rotatably connected between the left end blocks (12) and the right end blocks (13) on the left and right sides, respectively, slide rods (15) are fixedly connected between the left end blocks (12) and the right end blocks (13) on the left and right sides, two L-shaped limiting push plates (16) are sleeved on the screw rods (14) and the slide rods (15) on the same side, and the four limiting push plates (16) are arranged in a rectangular shape and are in contact with the left and right sides of the lower die plate (6), respectively.

4. A press machine used in a process of producing a precision shaft according to claim 3, wherein The left ends of the two screw rods (14) penetrate through the left end blocks (12) and are fixedly sleeved with first bevel gears (17), fixed plates (18) are fixedly connected to the left ends of the two supporting plates (2) on the left side, a transmission rod (19) is rotatably connected between the two fixed plates (18), two second bevel gears (20) are fixedly sleeved on the transmission rod (19), the two second bevel gears (20) are perpendicularly engaged with the two first bevel gears (17), respectively, and a driving motor (21) is fixedly installed on the front fixed plate (18) to drive the transmission rod (19) to rotate.

5. A press machine used in a process of producing a precision shaft according to claim 1, wherein The three air pipes (25) are in communication with a gas pump at the ends away from the contact plates (23).

6. A press machine used in a process of producing a precision shaft according to claim 1, wherein The distribution intervals of the three air grooves (24) are the same as the distribution intervals of the three air holes (8).

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