Feeding device of hydraulic punching machine

Abstract

The invention relates to the technical field of hydraulic punching machines, in particular to a feeding device of a hydraulic punching machine, a position adjusting part is fixedly connected to a fixing frame, a first movable plate is fixedly connected to the position adjusting part, and suction cups are fixedly connected to the two sides of the bottom end of the first movable plate; the upper end of the first movable plate is connected with a vacuum pump used for adjusting the adsorption force of the suction cups, the upper end of the first movable plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a supporting arm, one end of the supporting arm is fixedly connected with a supporting column, and the supporting column is located between the two suction cups. The vacuum pump drives the suction cups to form negative pressure, it is ensured that a plate is firmly fixed in the lifting and moving process, slippage or falling is avoided, the supporting arms drive the elastic sleeves to make contact with the bottom of the plate, vertical bidirectional clamping is formed between the elastic sleeves and the suction cups, the stability of the plate in the horizontal moving process is enhanced, inclination or shaking is prevented, and the fixing effect on the plate is improved; and the plate cannot be scratched when being fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic punching, in particular to a feeding device of a hydraulic punching machine. Background Art

[0002] Hydraulic stamping machine is a mechanical equipment that uses a hydraulic system to drive the slide to perform stamping processing. It is widely used in metal forming, punching, stretching, bending and other processes.

[0003] When a hydraulic stamping machine is working, the plates to be processed are generally moved into the stamping die manually. Not only does a single loading take a long time, but workers are easily fatigued after working for a long time, which slows down the loading rhythm and seriously restricts the continuous operation efficiency of the stamping machine. In order to improve the processing efficiency, a loading device is used for loading. The loading device generally uses a robotic arm to grab and load the plates, and then accurately feeds them into the mold cavity through the track. There is no need for manual intervention in the dangerous area during the entire process. The robotic arm needs to squeeze and fix the plates when loading. If the robotic arm squeezes too tightly, it is easy to scratch the plates. If the robotic arm squeezes too lightly, the plates are easy to fall off, reducing the fixing effect of the plates during loading, thereby reducing the stamping effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that the mechanical arm squeezing too tightly may easily cause scratches on the plate, squeezing too lightly may easily cause the plate to fall, and reducing the fixing effect of the plate during loading, and to propose a loading device for a hydraulic stamping machine.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A feeding device for a hydraulic stamping machine is designed, including a fixed frame, a support platform is fixedly connected to the fixed frame, a position adjusting member is fixedly connected to the fixed frame, the position adjusting member is located above the support platform, a first movable plate is fixedly connected to the position adjusting member, suction cups are fixedly connected to both sides of the bottom end of the first movable plate, a vacuum pump for adjusting the adsorption force of the suction cup is connected to the upper end of the first movable plate, a second motor is fixedly connected to the upper end of the first movable plate, an output end of the second motor is fixedly connected to a support arm, one end of the support arm is fixedly connected to a support column, and the support column is located between the two suction cups.

[0007] Preferably, the position adjustment member includes a slide frame, the slide frame is fixedly connected to the fixed frame, the slide frame is located at the upper end of the support platform, the slide frame is slidably connected to a movable frame, the slide frame is fixedly connected to a first motor, the output end of the first motor extends into the slide frame and is fixedly connected to a threaded rod that drives the movable frame to move in the horizontal direction, the bottom end of the movable frame is fixedly connected to a hydraulic telescopic cylinder, and the telescopic end of the hydraulic telescopic cylinder is fixedly connected to the first movable plate.

[0008] Preferably, a groove plate is fixedly connected to the bottom end of the movable frame, a guide plate is slidably connected to the groove plate, and one end of the guide plate is fixedly connected to the first movable plate.

[0009] Preferably, an elastic sleeve is sleeved on the support column, and the elastic sleeve is a rubber sleeve.

[0010] Preferably, the upper end of the support platform is connected to a dust cleaning mechanism for cleaning the surface of the stamping plate, and the dust cleaning mechanism includes a support plate, which is fixedly connected to the support platform, and the upper end of the support platform is fixedly connected to an air pump, and one side of the upper end of the support platform is fixedly connected to a baffle, and the air outlet of the air pump is connected to an exhaust pipe, and one end of the exhaust pipe passes through the baffle.

[0011] Preferably, the outlet of the exhaust pipe is arranged to be inclined downward toward the upper end of the support platform.

[0012] Preferably, the upper end of the support platform is connected to a positioning mechanism for positioning the stamping plate, and the positioning mechanism includes two symmetrically arranged second movable plates, an opening is provided on one side of the support platform, and the two symmetrically arranged second movable plates are both slidably connected to the opening, and a plurality of strip holes are provided on the upper end of the support platform, each of the strip holes is connected to the opening, and the upper end of each second movable plate is fixedly connected to a first limit plate on both sides, and one end of each first limit plate passes through the corresponding strip hole, and a servo motor is fixedly connected to the support platform, and the output end of the servo motor extends into the opening and is fixedly connected to a bidirectional screw for adjusting the distance between the two second movable plates.

[0013] Preferably, a second limiting plate is fixedly connected to one side of the upper end of the second movable plate.

[0014] Preferably, the support platform is connected to a pushing mechanism for preventing the stamping plate from separating from the second limit plate, and the pushing mechanism includes two parallel circular grooves, and the two parallel circular grooves are opened to the upper end of the support platform, and a rotating roller is rotatably connected in each of the circular grooves, and the upper end of each rotating roller extends out of the circular groove, and one end of each rotating roller extends out of the circular groove, and a belt transmission part is connected between one end of the two rotating rollers, and a mounting plate is fixedly connected to the support platform, and the upper end of the mounting plate is fixedly connected to a third motor, and the output end of the third motor is fixedly connected to one of the rotating rollers.

[0015] Preferably, two parallel fixed seats are fixedly connected to the support platform, each of the fixed seats is fixedly connected to a support rod, and one end of each support rod is fixedly connected to the same protective plate, and the protective plate is located above the belt transmission part, and the upper end surface of the protective plate is on the same plane as the upper end surface of the support platform.

[0016] The present invention provides a feeding device for a hydraulic press, which has the following beneficial effects:

[0017] 1. The vacuum pump drives the suction cup to form negative pressure to ensure that the panel is firmly fixed during the lifting and moving process to prevent slipping or falling off. The support arm drives the elastic sleeve to contact the bottom of the panel, forming an up and down two-way clamping with the suction cup, enhancing the stability of the panel during horizontal movement, preventing tilting or shaking, improving the fixing effect of the panel, and will not cause scratches when fixing the panel.

[0018] 2. After the gas in the exhaust pipe is released, the surface of the stamped sheet to be processed is flushed with gas to reduce the interference of foreign matter between the suction cup and the sheet, ensure the sealing of vacuum adsorption, and avoid the decrease of adsorption force or air leakage caused by dust.

[0019] 3. Through the preliminary limiting of the second limiting plate and the extrusion limiting of the first limiting plate, the stamping plate to be processed is ensured to be accurately adjusted to the middle position of the upper end of the support table, thereby improving the processing accuracy.

[0020] 4. The two rotating rollers rotate synchronously to push the stamping plate to be processed toward the second limit plate, so that the second limit plate is always in contact with the second limit plate, avoiding the separation of the stamping plate to be processed from the second limit plate when the first limit plates push the stamping plate to be processed to move, thereby improving the positioning accuracy of the stamping plate to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a feeding device of a hydraulic punching machine proposed by the present invention Figure 1 ;

[0022] Figure 2 A schematic diagram of the structure of a feeding device of a hydraulic punching machine proposed by the present invention Figure 2 ;

[0023] Figure 3 A schematic diagram of the structure of a feeding device of a hydraulic punching machine proposed by the present invention Figure 3 ;

[0024] Figure 4 This is a structural diagram of the connection between the support platform and the dust cleaning mechanism in the feeding device of a hydraulic punching machine proposed by the present invention;

[0025] Figure 5This is a structural diagram of the connection between the support platform and the positioning mechanism in the feeding device of a hydraulic punching machine proposed by the present invention;

[0026] Figure 6 This is a structural diagram of the connection between the support platform and the pushing mechanism in the feeding device of a hydraulic punching machine proposed by the present invention;

[0027] Figure 7 for Figure 6 A schematic diagram of the local enlarged structure at point A above;

[0028] Figure 8 This is a schematic cross-sectional view of the connection between the support platform and the pushing mechanism in the feeding device of a hydraulic punching machine proposed by the present invention.

[0029] In the figure: 1. Fixed frame; 2. Support platform; 3. Position adjustment member; 4. First movable plate; 5. Suction cup; 6. Vacuum pump; 7. Second motor; 8. Support arm; 9. Support column; 10. Elastic sleeve; 11. Dust cleaning mechanism; 12. Positioning mechanism; 13. Pushing mechanism; 31. Slide frame; 32. Movable frame; 33. First motor; 34. Threaded rod; 35. Hydraulic telescopic cylinder; 36. Groove plate; 37. Guide plate; 111. Support plate; 112. Air pump; 113. Baffle; 114. Exhaust pipe; 121. Second movable plate; 122. Opening; 123. Strip hole; 124. First limit plate; 125. Servo motor; 126. Bidirectional screw; 127. Second limit plate; 131. Circular notch; 132. Rotating roller; 133. Belt transmission member; 134. Mounting plate; 135. Third motor; 136. Fixed seat; 137. Support rod; 138. Protective plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1: Reference Figure 1-3 , a feeding device of a hydraulic stamping machine includes a fixed frame 1, a support platform 2 is fixedly connected to the fixed frame 1, a position adjusting member 3 is fixedly connected to the fixed frame 1, the position adjusting member 3 is located above the support platform 2, a first movable plate 4 is fixedly connected to the position adjusting member 3, both sides of the bottom end of the first movable plate 4 are fixedly connected to suction cups 5, the upper end of the first movable plate 4 is connected to a vacuum pump 6 for adjusting the adsorption force of the suction cup 5, the upper end of the first movable plate 4 is fixedly connected to a second motor 7, the output end of the second motor 7 is fixedly connected to a support arm 8, one end of the support arm 8 is fixedly connected to a support column 9, the support column 9 is located between the two suction cups 5, and an elastic sleeve 10 is sleeved on the support column 9, and the elastic sleeve 10 is a rubber sleeve;

[0032] Reference Figure 3 The position adjustment member 3 includes a slide frame 31, which is fixedly connected to the fixed frame 1. The slide frame 31 is located at the upper end of the support platform 2. A movable frame 32 is slidably connected to the slide frame 31. A first motor 33 is fixedly connected to the slide frame 31. The output end of the first motor 33 extends into the slide frame 31 and is fixedly connected to a threaded rod 34 that drives the movable frame 32 to move horizontally. The bottom end of the movable frame 32 is fixedly connected to a hydraulic telescopic cylinder 35. The telescopic end of the hydraulic telescopic cylinder 35 is fixedly connected to the first movable plate 4. The bottom end of the movable frame 32 is fixedly connected to a groove plate 36. A guide plate 37 is slidably connected to the groove plate 36. One end of the guide plate 37 is fixedly connected to the first movable plate 4.

[0033] Working principle:

[0034] Initially, the suction cup 5 is located directly above the support platform 2, and the support column 9 is located above the first movable plate 4;

[0035] The stamping sheet to be processed is placed on the support table 2. After the hydraulic telescopic cylinder 35 is started, it drives the first movable plate 4 to move downward by a set distance. The first movable plate 4 drives the guide plate 37 to move. The guide plate 37 slides on the groove plate 36. Under the cooperation of the groove plate 36 and the guide plate 37, the vertical movement of the first movable plate 4 is guaranteed to be stable to avoid deviation. The first movable plate 4 synchronously drives the suction cup 5 to move downward by a set distance. After the suction cup 5 moves downward by a set distance, it contacts the upper end of the stamping sheet to be processed. After the vacuum pump 6 is started, a vacuum is generated in the suction cup 5. The two suction cups 5 negatively adsorb the stamping sheet to be processed.

[0036] The hydraulic telescopic cylinder 35 then drives the first movable plate 4 to move upward and reset. The first movable plate 4 drives the stamping plate to be processed to move upward through the suction cup 5, so that the stamping plate to be processed is separated from the support platform 2. After the first movable plate 4 moves upward and reset, the second motor 7 drives the support arm 8 to rotate clockwise to a set angle. The support arm 8 drives the support column 9 to rotate. The support column 9 contacts the bottom end of the stamping plate to be processed through the elastic sleeve 10 to avoid damage to the plate surface caused by rigid collision. The support column 9 supports the stamping plate to be processed;

[0037] After the first motor 33 is started, it drives the threaded rod 34 to rotate clockwise for a set number of turns. Under the guide limit of the slide frame 31, the movable frame 32 moves toward the hydraulic stamping machine, realizing high-precision positioning of the horizontal movement of the movable frame 32, ensuring that the plate accurately reaches the top of the stamping machine processing table. The movable frame 32 drives the first movable plate 4 to move in the horizontal direction through the hydraulic telescopic cylinder 35. The first movable plate 4 drives the stamping plate to be processed to move toward the hydraulic stamping machine through the two suction cups 5. After the movable frame 32 moves the set distance toward the hydraulic stamping machine, the stamping plate to be processed is now located directly above the hydraulic stamping machine processing table.

[0038] The second motor 7 drives the support arm 8 to rotate counterclockwise to a set angle and reset, and the support arm 8 drives the support column 9 to rotate upward and reset, so that the support column 9 is separated from the bottom end of the stamping plate to be processed, and the hydraulic telescopic cylinder 35 then drives the first movable plate 4 to move downward a set distance. The first movable plate 4 drives the stamping plate to be processed to move downward a set distance through the suction cup 5, so that the stamping plate to be processed contacts the processing table surface of the hydraulic stamping machine. After the vacuum pump 6 stops working, the negative pressure in the suction cup 5 disappears;

[0039] The hydraulic telescopic cylinder 35 then drives the first movable plate 4 to move upward and reset, and the first motor 33 drives the threaded rod 34 to rotate counterclockwise for a set number of circles, so that the movable frame 32 moves and resets, and the movable frame 32 drives the first movable plate 4 to move and reset, so that the first movable plate 4 is located directly above the support platform 2, waiting for the next loading;

[0040] The suction cup 5 is driven by the vacuum pump 6 to form negative pressure, ensuring that the panel is firmly fixed during the lifting and moving process to prevent slipping or falling off, and the support arm 8 drives the elastic sleeve 10 to contact the bottom of the panel, forming an upper and lower bidirectional clamping with the suction cup 5, enhancing the stability of the panel during horizontal movement, preventing tilting or shaking, improving the fixing effect of the panel, and not causing scratches when fixing the panel.

[0041] Example 2: When the stamping plate to be processed is fixed by the suction cup 5, the dust on the surface of the stamping plate to be processed affects the fixing effect of the suction cup 5. Figure 4-5 As another preferred embodiment of the present invention, the difference from Example 1 is that the upper end of the support platform 2 is connected to a dust cleaning mechanism 11 for cleaning the surface of the stamping sheet, and the dust cleaning mechanism 11 includes a support plate 111, and the support plate 111 is fixedly connected to the support platform 2, and the upper end of the support platform 2 is fixedly connected to an air pump 112, and one side of the upper end of the support platform 2 is fixedly connected to a baffle 113, and the air outlet of the air pump 112 is connected to an exhaust pipe 114, one end of the exhaust pipe 114 passes through the baffle 113, and the outlet of the exhaust pipe 114 is arranged to be inclined downward toward the upper end of the support platform 2.

[0042] Working principle:

[0043] The support table 2 supports the air pump 112. After the stamping sheet to be processed is placed on the support table 2, the air pump 112 is started to absorb gas, and the absorbed gas is introduced into the exhaust pipe 114. After the gas in the exhaust pipe 114 is released, the surface of the stamping sheet to be processed is flushed with gas, reducing the interference of foreign matter between the suction cup 5 and the sheet, ensuring the sealing of the vacuum adsorption, and avoiding the decrease in adsorption force or air leakage caused by dust. The gas flushing can remove fine particles, oil stains or debris on the surface of the sheet, preventing these pollutants from damaging the mold or affecting the quality of the finished product during the stamping process, thereby improving the accuracy of subsequent stamping processing and product yield.

[0044] Example 3: After the stamping sheet to be processed is placed on the upper end of the support table 2, the stamping sheet to be processed is fixed by the suction cup 5 and then loaded. However, the position of the stamping sheet to be processed on the upper end of the support table 2 is prone to deviation, resulting in misalignment when the stamping sheet to be processed is loaded onto the processing table surface of the hydraulic stamping machine, reducing the loading accuracy of the stamping sheet to be processed. Figure 4-5 As another preferred embodiment of the present invention, the difference from Example 1 is that the upper end of the support platform 2 is connected to a positioning mechanism 12 for positioning the stamping plate, and the positioning mechanism 12 includes two symmetrically arranged second movable plates 121, and an opening 122 is opened on one side of the support platform 2. The two symmetrically arranged second movable plates 121 are both slidably connected to the opening 122, and a plurality of strip holes 123 are opened on the upper end of the support platform 2, each strip hole 123 is connected to the opening 122, and each second movable plate 121 is fixedly connected to both sides of the upper end of the first limit plate 124, and one end of each first limit plate 124 passes through the corresponding strip hole 123, and a servo motor 125 is fixedly connected to the support platform 2, and the output end of the servo motor 125 extends into the opening 122 and is fixedly connected to a bidirectional screw 126 for adjusting the distance between the two second movable plates 121, and a second limit plate 127 is fixedly connected to one side of the upper end of the second movable plate 121.

[0045] Working principle:

[0046] After the stamping plate to be processed is placed on the upper end of the support table 2, one side of the stamping plate to be processed contacts the second limiting plate 127, and the second limiting plate 127 performs a preliminary limiting on the stamping plate to be processed;

[0047] After the servo motor 125 is started, it drives the bidirectional screw 126 to rotate clockwise for a set number of turns and then resets. After the bidirectional screw 126 rotates clockwise, the two second movable plates 121 move toward each other by a set distance. Each second movable plate 121 drives the two first limit plates 124 to move. Several first limit plates 124 squeeze and limit the stamping plate to be processed. Through the preliminary limit of the second limit plate 127 and the extrusion limit of the first limit plate 124, it is ensured that the stamping plate to be processed is accurately adjusted to the middle position of the upper end of the support table 2, thereby improving the processing accuracy.

[0048] After the first limiting plates 124 limit the stamping plate to be processed, each second movable plate 121 drives the first limiting plates 124 to move and reset, which facilitates the rapid positioning of the next workpiece and improves the continuous operation efficiency.

[0049] Example 4: When the stamping plate to be processed is squeezed and limited by a plurality of first limiting plates 124, the stamping plate to be processed is easily separated from the second limiting plates 127 after moving, which reduces the positioning accuracy of the stamping plate to be processed. Figure 6-8 As another preferred embodiment of the present invention, the difference from Example 3 is that a pushing mechanism 13 is connected to the support platform 2 to prevent the stamping plate from separating from the second limit plate 127. The pushing mechanism 13 includes two parallel circular notches 131. The two parallel circular notches 131 are both opened to the upper end of the support platform 2. A rotating roller 132 is rotatably connected in each circular notch 131. The upper end of each rotating roller 132 extends out of the circular notch 131. One end of each rotating roller 132 extends outside the circular notch 131. A belt is connected between one end of the two rotating rollers 132. Transmission member 133, a mounting plate 134 is fixedly connected to the support platform 2, the upper end of the mounting plate 134 is fixedly connected to a third motor 135, the output end of the third motor 135 is fixedly connected to one of the rotating rollers 132, and two parallel fixed seats 136 are fixedly connected to the support platform 2, each fixed seat 136 is fixedly connected to a support rod 137, and one end of each support rod 137 is fixedly connected to the same protective plate 138, which is located above the belt transmission member 133, and the upper end surface of the protective plate 138 is on the same plane as the upper end surface of the support platform 2.

[0050] Working principle:

[0051] When the first limiting plates 124 push the stamping sheet to be processed to move, the third motor 135 is powered on and started. After the third motor 135 is started, it drives one rotating roller 132 to rotate. The rotating roller 132 drives the other rotating roller 132 to rotate through the belt transmission member 133, so that the two rotating rollers 132 rotate synchronously. After the two rotating rollers 132 rotate synchronously, they push the stamping sheet to be processed to move toward the second limiting plate 127, so that the second limiting plate 127 is always in contact with the second limiting plate 127, so as to avoid the stamping sheet to be processed from being separated from the second limiting plate 127 when the first limiting plates 124 push the stamping sheet to be processed to move, thereby improving the positioning accuracy of the stamping sheet to be processed;

[0052] In addition, the fixing seat 136 fixes the support rod 137 , and the support rod 137 supports and fixes the protective plate 138 to prevent objects from contacting the belt transmission component 133 .

[0053] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A feeding device for a hydraulic punching machine, comprising a fixed frame (1), a support platform (2) fixedly connected to the fixed frame (1), characterized in that: in: A position adjustment member (3) is fixedly connected to the fixed frame (1), and the position adjustment member (3) is located above the support platform (2). A first movable plate (4) is fixedly connected to the position adjustment member (3), and suction cups (5) are fixedly connected to both sides of the bottom end of the first movable plate (4). A vacuum pump (6) for adjusting the adsorption force of the suction cup (5) is connected to the upper end of the first movable plate (4). A second motor (7) is fixedly connected to the upper end of the first movable plate (4), and an output end of the second motor (7) is fixedly connected to a support arm (8). One end of the support arm (8) is fixedly connected to a support column (9), and the support column (9) is located between the two suction cups (5).

2. The feeding device of the hydraulic press according to claim 1, characterized in that: The position adjustment member (3) includes a slide frame (31), the slide frame (31) is fixedly connected to the fixed frame (1), the slide frame (31) is located at the upper end of the support platform (2), a movable frame (32) is slidably connected to the slide frame (31), a first motor (33) is fixedly connected to the slide frame (31), an output end of the first motor (33) extends into the slide frame (31) and is fixedly connected to a threaded rod (34) that drives the movable frame (32) to move in the horizontal direction, a hydraulic telescopic cylinder (35) is fixedly connected to the bottom end of the movable frame (32), and a telescopic end of the hydraulic telescopic cylinder (35) is fixedly connected to the first movable plate (4).

3. The feeding device of the hydraulic press according to claim 2, characterized in that: The bottom end of the movable frame (32) is fixedly connected to a groove plate (36), a guide plate (37) is slidably connected to the groove plate (36), and one end of the guide plate (37) is fixedly connected to the first movable plate (4).

4. The feeding device of the hydraulic press according to claim 1, characterized in that: An elastic sleeve (10) is sleeved on the support column (9), and the elastic sleeve (10) is a rubber sleeve.

5. The feeding device of the hydraulic press according to claim 1, characterized in that: The upper end of the support platform (2) is connected to a dust cleaning mechanism (11) for cleaning the surface of the stamped plate, the dust cleaning mechanism (11) comprising a support plate (111), the support plate (111) being fixedly connected to the support platform (2), the upper end of the support platform (2) being fixedly connected to an air pump (112), one side of the upper end of the support platform (2) being fixedly connected to a baffle (113), the air outlet of the air pump (112) being connected to an exhaust pipe (114), one end of the exhaust pipe (114) passing through the baffle (113).

6. The feeding device of the hydraulic press according to claim 5, characterized in that: The outlet of the exhaust pipe (114) is arranged to be inclined downward toward the upper end of the support platform (2).

7. The feeding device of the hydraulic press according to claim 6, characterized in that: The upper end of the support platform (2) is connected to a positioning mechanism (12) for positioning the stamping plate, and the positioning mechanism (12) includes two symmetrically arranged second movable plates (121). An opening (122) is provided on one side of the support platform (2), and the two symmetrically arranged second movable plates (121) are both slidably connected to the opening (122). A plurality of strip holes (123) are provided on the upper end of the support platform (2), and each of the strip holes (123) is connected to the opening (122). Both sides of the upper end of each second movable plate (121) are fixedly connected to a first limiting plate (124), and one end of each first limiting plate (124) passes through the corresponding strip hole (123). A servo motor (125) is fixedly connected to the support platform (2), and the output end of the servo motor (125) extends into the opening (122) and is fixedly connected to a bidirectional screw (126) for adjusting the distance between the two second movable plates (121).

8. The feeding device of the hydraulic press according to claim 7, characterized in that: A second limiting plate (127) is fixedly connected to one side of the upper end of the second movable plate (121).

9. The feeding device of the hydraulic press according to claim 8, characterized in that: The support platform (2) is connected to a pushing mechanism (13) for preventing the stamping plate from separating from the second limiting plate (127), the pushing mechanism (13) comprises two parallel circular notches (131), the two parallel circular notches (131) are both opened to the upper end of the support platform (2), a rotating roller (132) is rotatably connected in each circular notch (131), the upper end of each rotating roller (132) extends out of the circular notch (131), one end of each rotating roller (132) extends outside the circular notch (131), a belt transmission member (133) is connected between one end of the two rotating rollers (132), a mounting plate (134) is fixedly connected to the support platform (2), the upper end of the mounting plate (134) is fixedly connected to a third motor (135), and the output end of the third motor (135) is fixedly connected to one of the rotating rollers (132).

10. The feeding device of the hydraulic press according to claim 9, characterized in that: Two parallel fixed seats (136) are fixedly connected to the support platform (2), each of the fixed seats (136) is fixedly connected to a support rod (137), and one end of each of the support rods (137) is fixedly connected to the same protective plate (138), and the protective plate (138) is located above the belt transmission member (133), and the upper end surface of the protective plate (138) is on the same plane as the upper end surface of the support platform (2).

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