Hydraulic machine for quickly fixing mold

Abstract

The hydraulic machine comprises a machine body and a transmission mechanism, multiple sets of sliding rods are fixed to the top of the machine body, a movable frame is slidably connected to the outer sides of the sliding rods, and a top plate is fixed to the tops of the sliding rods. According to the hydraulic machine for rapidly fixing the mold, a motor is started to drive a transmission mechanism to move, the transmission mechanism can drive a moving plate to move out of a machine body, then the mold is hoisted to the top of the moving plate through a hoisting frame, a positioning groove in the moving plate is in butt joint with a positioning block at the bottom of a lower mold, and movement of the lower mold in one direction is completed; after butt joint is completed, a motor can be started to rotate reversely, a movable plate and the lower die are driven to reset, the movable plate can drive a transmission gear b to rotate, then limiting rods are driven to move, the limiting rods enter limiting grooves in the two sides of the lower die, limiting of the lower die in the other direction is completed, and at the moment, the lower die is completely fixed.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic presses, in particular to a hydraulic press for quickly fixing a mould. Background Art

[0002] During the manufacturing process of hardware molds, hydraulic presses are usually required to complete stamping, forming and other processes. Hydraulic presses drive the molds to work through the pressure generated by the hydraulic system and are suitable for processing various metal materials.

[0003] For example, announcement number CN218361521U is a hydraulic press for metal stamping parts. In this utility model, when the pressure block presses the mold downward, spring a plays a buffering role to protect the mold and the press table. Spring a releases energy to bounce the stamping part upward for easy removal. When the pressure block stamps downward, the fixing part fixes the metal plate on the press table to facilitate the stamping operation. The device has a simple structure and is easy to operate.

[0004] When the hydraulic press in the above scheme processes the hardware, the workpiece will be placed between the upper and lower molds, and then the upper mold and the lower mold will be driven close by the hydraulic press to process the hardware. However, the mold in the above scheme is fixed to the hydraulic press by bolts, and multiple sets of bolts need to be turned when fixing. In addition, due to the heavy weight of the mold, a hoist is required for auxiliary installation. However, since the movable frame of the hydraulic press is directly above the mold, it will affect the lifting work, thereby affecting the rapid fixation of the mold. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic press for quickly fixing a mold, so as to solve the problem that the existing hydraulic press is difficult to quickly fix the mold as mentioned in the background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a hydraulic press for quickly fixing a mold, comprising a machine body and a transmission mechanism, wherein a plurality of slide bars are fixed on the top of the machine body, a moving frame is slidably connected to the outer side of the slide bars, and a top plate is fixed on the top of the slide bars.

[0007] A hydraulic rod is installed on the top of the moving frame, and the bottom of the hydraulic rod is fixedly connected to the moving frame, an upper mold is fixed on the bottom of the moving frame, a lower mold is arranged on the top of the machine body, a motor is installed on the bottom of the machine body, and a transmission mechanism for driving the lower mold to move is arranged at the output end of the motor, a moving plate is slidably connected to the top of the machine body through a slider, rack rods are fixedly connected to both sides of the moving plate, one side of the rack rod is meshed with a transmission gear a, the bottom of the transmission gear a is movably connected to the machine body through a rotating shaft, a connecting rod is fixedly connected to the top of the transmission gear a, a transmission gear b is fixedly connected to the top of the connecting rod, one side of the transmission gear b is meshed with a limiting rod through a rack, and a fixed block is slidably connected to the outer side of the limiting rod.

[0008] Preferably, the bottom of the fixed block is fixedly connected to the machine body, limiting grooves are provided on both sides of the lower mold, and the limiting grooves are engaged with the limiting rods, and two groups of positioning blocks are fixedly connected to the bottom of the lower mold, the outer sides of the positioning blocks are slidably connected to the movable plate, and the outer sides of the connecting rods are movably connected to the fixed blocks through bearings.

[0009] Preferably, the transmission mechanism includes a bevel gear a fixedly connected to the output end of the motor, the outer side of the bevel gear a is meshingly connected with a bevel gear b, and one side of the bevel gear b is fixedly connected with a threaded rod.

[0010] Preferably, the top of the threaded rod is movably connected to the body through a bearing, the outer side of the threaded rod is threadedly connected to a threaded block, one side of the threaded block is movably connected to a connecting rod a through a rotating shaft, and one end of the connecting rod a is slidably connected to the movable plate through a rotating shaft.

[0011] Preferably, an electric push rod is installed inside the lower mold, one end of the electric push rod is movably connected to a connecting rod b via a rotating shaft, and one end of the connecting rod b is movably connected to a moving block via a rotating shaft.

[0012] Preferably, a spring a is fixedly connected inside the moving block, a moving rod is fixedly connected to the top of the spring a, and the outer side of the moving rod is slidably connected to the moving block.

[0013] Preferably, a fixing rod is fixedly connected to the top of the moving block, a ball is rollingly connected to one side of the moving block, an ejection plate is slidingly connected to the inside of the lower mold, and bumps are fixedly connected to both sides of the ejection plate.

[0014] Preferably, a strip groove is provided inside the lower mold, and the strip groove is slidably connected to the protrusion, and a photoelectric sensor is installed on one side of the top plate.

[0015] Preferably, a connecting ring is slidably connected to the outer side of the slide rod, the outer side of the connecting ring is fixedly connected to the machine body, and an oil filling groove is provided on a side of the machine body close to the connecting ring.

[0016] Preferably, an oil outlet groove is provided inside the connecting ring, one end of the oil filling groove is movably connected to a sealing plate via a rotating shaft, one side of the sealing plate is fixedly connected to a spring b, and one end of the spring b is fixedly connected to the movable frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. For this hydraulic press that quickly fixes the mold, when installing the lower mold, the motor is started to drive the transmission mechanism to move. The transmission mechanism can drive the movable plate to move out of the machine body, and then the mold is hoisted to the top of the movable plate through the hoisting frame, and the positioning groove inside the movable plate is docked with the positioning block at the bottom of the lower mold to complete the movement of the lower mold in one direction. After the docking is completed, the motor can be started to reverse, driving the movable plate and the lower mold to reset. The movable plate will drive the transmission gear b to rotate, and then drive the limit rod to move, so that the limit rod enters the limit grooves on both sides of the lower mold to complete the limit of the lower mold in another direction. At this time, the lower mold will be completely fixed. In this way, the above operation can be conveniently hoisted to the hydraulic press, and the mold can be quickly fixed to the hydraulic press to facilitate the processing of hardware.

[0019] 2. For the hydraulic press with a pair of molds that can be quickly fixed, after the processing of the hardware in the lower mold is completed, in order to facilitate the removal of the workpiece and the waste under the stamping, a photoelectric sensor is installed on one side of the top plate. When a group of hardware is processed, the top plate will move up. When the photoelectric sensor senses the top plate, the controller will control the electric push rod to perform a telescopic movement. The electric push rod will push the connecting rod b to rotate. When the connecting rod b rotates, it will push the moving block to move up. When the moving block moves up, it will drive the moving rod and the fixed rod to move up as well, thereby pushing the top ejector plate to move up. The protrusions on both sides of the ejector plate will slide in the strip groove, and the ejector plate will eject the waste on the top. When the protrusion moves to the end of the strip groove, the moving rod will not be able to move up further. The moving rod will squeeze the spring a at the bottom, while the fixed rod can continue to move up and push the ejector plate to rotate around the protrusion. The rotating ejector plate can export the waste on the top. In this way, through the above operation, the waste in the lower mold can be discharged synchronously when the moving frame of the hydraulic press moves up.

[0020] 3. For the hydraulic press with a pair of molds that can be quickly fixed, in order to make the movable frame slide more smoothly on the slide bar, the oil filling pipe of the lubricating oil is inserted into the oil filling groove of the movable frame. The oil filling pipe will contact the sealing plate, thereby pushing the sealing plate to rotate. When the sealing plate rotates, it will squeeze the spring b on one side to shrink it. The lubricating oil will enter the connecting ring through the oil filling groove and flow out evenly through the annular oil outlet groove inside the connecting ring. When the movable frame moves, the connecting ring will evenly apply the lubricating oil to the slide bar, reducing the friction when the movable frame contacts the slide bar, thereby achieving the purpose of smooth movement. In this way, the movable frame in the hydraulic press can move smoothly on the slide bar through the above operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the present invention;

[0023] Figure 3 This is a three-dimensional schematic diagram of the lower mold of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the transmission mechanism of the present invention;

[0025] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the lower mold of the present invention;

[0026] Figure 6 It is an enlarged schematic diagram of A of the present invention;

[0027] Figure 7 It is a three-dimensional cross-sectional schematic diagram of the movable plate of the present invention;

[0028] Figure 8 It is a three-dimensional cross-sectional schematic diagram of the connecting ring of the present invention;

[0029] Fig. 9 It is an enlarged schematic diagram of B of the present invention;

[0030] Fig.10 It is a three-dimensional cross-sectional schematic diagram of the lower mold of the present invention.

[0031] In the figure: 1, machine body; 2, slide bar; 3, moving frame; 4, top plate; 5, hydraulic rod; 6, upper mold; 7, lower mold; 8, motor; 9, transmission mechanism; 91, bevel gear a; 92, bevel gear b; 93, threaded rod; 94, threaded block; 95, connecting rod a; 10, moving plate; 11, rack rod; 12, transmission gear a; 13, connecting rod; 14, transmission gear b; 15, limiting rod; 16, fixed block; 17, limiting groove; 18, electric push rod; 19, connecting rod b; 20, moving block; 21, spring a; 22, moving rod; 23, ball; 24, fixed rod; 25, ejector plate; 26, bump; 27, strip groove; 28, photoelectric sensor; 29, connecting ring; 30, oil filling groove; 31, oil outlet groove; 32, blocking plate; 33, spring b; 34, positioning block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 4 and Fig.10 The present invention provides a technical solution: a hydraulic press for quickly fixing a mold, comprising a machine body 1 and a transmission mechanism 9, a plurality of slide bars 2 are fixed on the top of the machine body 1, a moving frame 3 is slidably connected to the outer side of the slide bars 2, a top plate 4 is fixed on the top of the slide bars 2,

[0034] A hydraulic rod 5 is installed on the top of the mobile frame 3, and the bottom of the hydraulic rod 5 is fixedly connected to the mobile frame 3. An upper mold 6 is fixed to the bottom of the mobile frame 3. A lower mold 7 is arranged on the top of the machine body 1, and a motor 8 is installed at the bottom of the machine body 1. A transmission mechanism 9 for driving the lower mold 7 to move is arranged at the output end of the motor 8. A mobile plate 10 is slidably connected to the top of the machine body 1 through a slider, and rack rods 11 are fixedly connected to both sides of the mobile plate 10. One side of the rack rod 11 is meshedly connected to a transmission gear a12. The bottom of the transmission gear a12 is movably connected to the machine body 1 through a rotating shaft, and a connecting rod 13 is fixedly connected to the top of the transmission gear a12. The top of the connecting rod 13 is fixedly connected to a transmission gear b14. One side of the transmission gear b14 is meshedly connected to a limit rod 15 through a rack, and a fixed block 16 is slidably connected to the outer side of the limit rod 15.

[0035] The bottom of the fixed block 16 is fixedly connected to the machine body 1, and limiting grooves 17 are provided on both sides of the lower mold 7, and the limiting grooves 17 are engaged with the limiting rods 15. Two sets of positioning blocks 34 are fixedly connected to the bottom of the lower mold 7, and the outer side of the positioning block 34 is slidably connected to the movable plate 10. The outer side of the connecting rod 13 is movably connected to the fixed block 16 through a bearing. A sliding groove matching the bottom slider of the lower mold 7 is provided on the top of the machine body 1, and a moving groove matching the limiting rod 15 is provided inside the fixed block 16. The limiting rod 15 and the fixed block 16 form a sliding connection. The rack rod 11 and the transmission gear a12 form a meshing transmission structure; the transmission mechanism 9 includes a bevel gear a91 fixedly connected to the output end of the motor 8, the outer side of the bevel gear a91 is meshedly connected with a bevel gear b92, and one side of the bevel gear b92 is fixedly connected with a threaded rod 93; the top of the threaded rod 93 is movably connected to the body 1 through a bearing, the outer side of the threaded rod 93 is threadedly connected with a threaded block 94, one side of the threaded block 94 is movably connected with a connecting rod a95 through a rotating shaft, and one end of the connecting rod a95 is slidably connected to the movable plate 10 through a rotating shaft.

[0036] During specific implementation, the hydraulic press for quickly fixing the mold, when installing the lower mold 7, starts the motor 8 to drive the bevel gear a91 in the transmission mechanism 9 to rotate, so that the bevel gear a91 is meshed with the bevel gear b92, and the bevel gear b92 drives the threaded rod 93 and the threaded block 94 to perform threaded transmission, thereby driving the threaded block 94 to move upward, and when the threaded block 94 moves, it drives the connecting rod a95 on one side to rotate, so that the connecting rod a95 drives the moving plate 10 to slide on the machine body 1, and when the moving plate 10 moves out of the machine body 1, there will be no obstruction on the top, and the mold can be hoisted to the top of the moving plate 10 by the hoisting frame, and the positioning groove inside the moving plate 10 is docked with the positioning block 34 at the bottom of the lower mold 7, so as to complete the movement of the lower mold 7 in one direction;

[0037] After the docking is completed, the motor 8 can be started to reverse, driving the moving plate 10 and the lower mold 7 to reset. When the moving plate 10 is reset, it will mesh with the transmission gear a12 through the rack rods 11 on both sides, driving the transmission gear a12 to rotate. When the transmission gear a12 rotates, it will drive the top transmission gear b14 to rotate synchronously through the connecting rod 13, so that the transmission gear b14 is meshed with the limit rod 15, and then drive the limit rod 15 to move, so that the limit rod 15 enters the limit grooves 17 on both sides of the lower mold 7, and the end is completed. The lower mold 7 is limited in another direction. At this time, the lower mold 7 will be completely fixed, and the lower mold 7 will also be in a position aligned with the upper mold 6, completing the rapid fixation of the lower mold 7. When the lower mold 7 needs to be taken out, the motor 8 can be started to drive the movable plate 10 to move out. At this time, the transmission gear b14 will drive the limiting rod 15 to disengage from the limiting groove 17, so that the lower mold 7 can be moved out smoothly. In this way, the above operation can conveniently lift the lower mold 7 onto the hydraulic press, and quickly fix the mold to the hydraulic press to facilitate the processing of hardware.

[0038] See also Figure 1 , Figure 3 , Figure 5 and Figure 6 , an electric push rod 18 is installed inside the lower mold 7, one end of the electric push rod 18 is movably connected to a connecting rod b19 through a rotating shaft, and one end of the connecting rod b19 is movably connected to a moving block 20 through a rotating shaft; a spring a21 is fixedly connected inside the moving block 20, and a moving rod 22 is fixedly connected to the top of the spring a21, and the outer side of the moving rod 22 is slidably connected to the moving block 20; a fixed rod 24 is fixedly connected to the top of the moving block 20, and a ball 23 is rollingly connected to one side of the moving block 20, and an ejection plate 25 is slidably connected inside the lower mold 7, and protrusions 26 are fixedly connected on both sides of the ejection plate 25; a strip groove 27 is opened inside the lower mold 7, and the strip groove 27 is slidably connected to the protrusion 26, a photoelectric sensor 28 is installed on one side of the top plate 4, a moving groove matching the moving rod 22 is opened inside the moving block 20, and the moving rod 22 and the moving rod 22 constitute a sliding structure, and the connecting rod b19 constitutes a rotating structure with the moving block 20 through a rotating shaft.

[0039] In specific implementation, the hydraulic press for fast fixing of the mold, after the hardware in the lower mold 7 is processed, in order to facilitate the removal of the workpiece and the waste under the stamping, a photoelectric sensor 28 is installed on one side of the top plate 4. When a group of hardware is processed, the top plate 4 will move up. When the photoelectric sensor 28 senses the top plate 4, the controller will control the electric push rod 18 to perform a telescopic movement. The electric push rod 18 will push the connecting rod b19 to rotate. When the connecting rod b19 rotates, it will push the moving block 20 to move up. One side of the moving block 20 will contact the lower mold 7 through the ball 23, thereby reducing the friction. When the moving block 20 moves up, it will drive the moving rod 22 and the fixed rod 24 to move up, thereby pushing the top ejector plate 25 to move up. The protrusions 26 on both sides of the ejector plate 25 will slide in the strip groove 27, and the ejector plate 25 will eject the waste on the top.

[0040] When the protrusion 26 moves to the end of the strip groove 27, since the moving rod 22 is located at the position of the axis of the protrusion 26, the moving rod 22 will not be able to move up further, and the moving rod 22 will squeeze the spring a21 at the bottom, while the fixed rod 24 can continue to move up and push the ejector plate 25 to rotate around the protrusion 26. The rotating ejector plate 25 can export the waste on the top to facilitate the staff to take it out. When the electric push rod 18 is reset, it will drive the moving block 20 to move down. At this time, the ejector plate 25 will rotate back to a horizontal state and reset back to the inside of the lower mold 7. The moving rod 22 can limit the end of the ejector plate 25 close to the protrusion 26 to prevent one end of the ejector plate 25 from moving down and causing the ejector plate 25 to fail to reset normally. In this way, through the above operation, the waste in the lower mold 7 can be discharged synchronously when the moving frame 3 of the hydraulic press moves up.

[0041] See also Figure 1 , Figure 2 and Figure 7-Figure 9 The outer side of the slide rod 2 is slidably connected with a connecting ring 29, the outer side of the connecting ring 29 is fixedly connected to the body 1, and an oil filling groove 30 is provided on the side of the body 1 close to the connecting ring 29; an oil outlet groove 31 is provided inside the connecting ring 29, one end of the oil filling groove 30 is movably connected to a sealing plate 32 through a rotating shaft, one side of the sealing plate 32 is fixedly connected with a spring b33, one end of the spring b33 is fixedly connected to the moving frame 3, and the sealing plate 32 forms a rotating structure with the moving frame 3 through the rotating shaft.

[0042] When the locking plate 32 is in the state of being pressed down, the locking plate 32 is pressed against the locking plate 33 and the locking plate 33 is pressed against the locking plate 33. When the locking plate 32 is in the state of being pressed down, the locking plate 32 is pressed against the locking plate 33 and the locking plate 33 is pressed against the locking plate 33.

[0043] To sum up, the workpiece is placed on the lower mold 7, and then the hydraulic rod 5 is started to drive the upper mold 6 to move downward. When the upper mold 6 and the lower mold 7 are combined, the stamping process of the hardware can be completed. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic press for quickly fixing a mold, comprising a machine body (1) and a transmission mechanism (9), wherein a plurality of slide bars (2) are fixed on the top of the machine body (1), a movable frame (3) is slidably connected to the outer side of the slide bars (2), and a top plate (4) is fixed on the top of the slide bars (2), characterized in that: A hydraulic rod (5) is installed on the top of the movable frame (3), the bottom of the hydraulic rod (5) is fixedly connected to the movable frame (3), an upper mold (6) is fixed on the bottom of the movable frame (3), a lower mold (7) is arranged on the top of the machine body (1), a motor (8) is installed on the bottom of the machine body (1), a transmission mechanism (9) for driving the lower mold (7) to move is arranged at the output end of the motor (8), a movable plate (10) is slidably connected to the top of the machine body (1) via a slider, and both sides of the movable plate (10) are A rack rod (11) is fixedly connected, one side of the rack rod (11) is meshedly connected to a transmission gear a (12), the bottom of the transmission gear a (12) is movably connected to the machine body (1) via a rotating shaft, the top of the transmission gear a (12) is fixedly connected to a connecting rod (13), the top of the connecting rod (13) is fixedly connected to a transmission gear b (14), one side of the transmission gear b (14) is meshedly connected to a limit rod (15) via a rack, and the outer side of the limit rod (15) is slidably connected to a fixed block (16).

2. A hydraulic press for quickly fixing a mold according to claim 1, characterized in that: The bottom of the fixed block (16) is fixedly connected to the machine body (1), limiting grooves (17) are provided on both sides of the lower mold (7), and the limiting grooves (17) are snap-connected with the limiting rods (15), and the bottom of the lower mold (7) is fixedly connected with two groups of positioning blocks (34), the outer sides of the positioning blocks (34) are slidably connected to the movable plate (10), and the outer sides of the connecting rods (13) are movably connected to the fixed block (16) through bearings.

3. A hydraulic press for quickly fixing a mold according to claim 1, characterized in that: The transmission mechanism (9) comprises a bevel gear a (91) fixedly connected to the output end of the motor (8), the outer side of the bevel gear a (91) is meshingly connected to a bevel gear b (92), and one side of the bevel gear b (92) is fixedly connected to a threaded rod (93).

4. A hydraulic press for quickly fixing a mold according to claim 3, characterized in that: The top of the threaded rod (93) is movably connected to the machine body (1) via a bearing, the outer side of the threaded rod (93) is threadedly connected to a threaded block (94), one side of the threaded block (94) is movably connected to a connecting rod a (95) via a rotating shaft, and one end of the connecting rod a (95) is slidably connected to the movable plate (10) via a rotating shaft.

5. The hydraulic press for quickly fixing a mold according to claim 1, characterized in that: An electric push rod (18) is installed inside the lower mold (7), one end of the electric push rod (18) is movably connected to a connecting rod b (19) via a rotating shaft, and one end of the connecting rod b (19) is movably connected to a moving block (20) via a rotating shaft.

6. A hydraulic press for quickly fixing a mold according to claim 5, characterized in that: A spring a (21) is fixedly connected inside the moving block (20), a moving rod (22) is fixedly connected to the top of the spring a (21), and the outer side of the moving rod (22) is slidably connected to the moving block (20).

7. A hydraulic press for quickly fixing a mold according to claim 6, characterized in that: The top of the moving block (20) is fixedly connected to a fixing rod (24), one side of the moving block (20) is rollingly connected to a ball (23), the interior of the lower mold (7) is slidably connected to an ejection plate (25), and both sides of the ejection plate (25) are fixedly connected to protrusions (26).

8. A hydraulic press for quickly fixing a mold according to claim 7, characterized in that: A strip groove (27) is provided inside the lower mold (7), and the strip groove (27) is slidably connected to the protrusion (26), and a photoelectric sensor (28) is installed on one side of the top plate (4).

9. A hydraulic press for quickly fixing a mold according to claim 1, characterized in that: The outer side of the slide rod (2) is slidably connected to a connecting ring (29), the outer side of the connecting ring (29) is fixedly connected to the machine body (1), and an oil injection groove (30) is provided on a side of the machine body (1) close to the connecting ring (29).

10. A hydraulic press for quickly fixing a mold according to claim 9, characterized in that: An oil outlet groove (31) is provided inside the connecting ring (29); one end of the oil filling groove (30) is movably connected to a blocking plate (32) via a rotating shaft; one side of the blocking plate (32) is fixedly connected to a spring b (33); one end of the spring b (33) is fixedly connected to the moving frame (3).

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