An automatic feeding device for a four-column hydraulic press

Abstract

This utility model relates to the technical field of hydraulic press equipment, and discloses an automatic feeding device for a four-column hydraulic press, including a base, a top plate, four support columns, a hydraulic cylinder, a lifting plate, two conveyor belts, two support frames, a left clamping plate, a right clamping plate, a transmission assembly, a support and buffer assembly, an upper mold, and a lower mold. The four support columns are fixedly installed on the sides of the base and top plate, close to each other and arranged parallel to each other. The hydraulic cylinder is fixedly installed on the top plate, and the lifting plate is slidably installed on the four support columns. The working end of the hydraulic cylinder is fixedly installed on the lifting plate. This utility model has the following advantages and effects: it has the advantages of simple structure, strong applicability, convenient operation, and safety and reliability without requiring an additional power source. It can also realize automatic loading and unloading operations and ensure the stability of the workpiece when using the four-column hydraulic press for pressing.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press equipment technology, and in particular to an automatic feeding device for a four-column hydraulic press. Background Technology

[0002] In modern industrial production, four-column hydraulic presses are widely used as key pressure processing equipment in various fields such as metal forming, mechanical assembly, and plastic product processing.

[0003] With the accelerating pace of intelligent and automated manufacturing, traditional manual feeding methods are no longer sufficient to meet the demands of large-scale, high-precision production due to their low efficiency, high labor intensity, and safety hazards. Although some hydraulic presses on the market are equipped with automatic feeding devices, most suffer from complex structures, high costs, and poor adaptability to workpieces of different sizes. For example, some devices rely on complex sensors and control systems, which not only increases equipment costs and maintenance difficulty but also makes it difficult to ensure clamping stability and accuracy when holding workpieces of different specifications. This can easily lead to workpiece displacement, damage, and other issues, resulting in low production efficiency and unstable product quality.

[0004] Therefore, this utility model proposes an automatic feeding device for a four-column hydraulic press to solve the above problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide an automatic feeding device for a four-column hydraulic press, which has the advantages of simple structure, strong applicability, convenient operation, safety and reliability and no need to provide an additional power source. At the same time, it can realize automatic loading and unloading operations and ensure the stability of the workpiece when pressing the workpiece using the four-column hydraulic press.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic feeding device for a four-column hydraulic press, comprising a base, a top plate, four support columns, a hydraulic cylinder, a lifting plate, two conveyor belts, two support frames, a left clamping plate, a right clamping plate, a transmission assembly, a support and buffer assembly, an upper mold, and a lower mold;

[0008] Four support columns are fixedly installed on the side of the base and top plate that are close to each other and are arranged parallel to each other. The hydraulic cylinder is fixedly installed on the top plate. The lifting plate is slidably installed on the four support columns. The working end of the hydraulic cylinder is fixedly installed on the lifting plate. The upper mold and the lower mold are respectively fixedly installed on the bottom side of the lifting plate and the top side of the base. Two conveyor belts are both set above the base and are located on both sides of the lower mold. Two support frames are both fixedly installed on the top side of the base and are located on the side of the two conveyor belts that are far from each other. The transmission assembly is set on the two support frames and connected to the lifting plate. The support buffer assembly is set on the transmission assembly. The left clamping plate and the right clamping plate are both set on the support buffer assembly and are symmetrically arranged on both sides of the lower mold.

[0009] The left clamping plate has a groove on the side near the right clamping plate. A connecting pipe and a pressure relief pipe are fixedly installed in the groove, and a one-way valve and an electric control valve are fixedly installed on the connecting pipe and the pressure relief pipe, respectively.

[0010] The present invention is further configured as follows: the transmission assembly includes two toothed plates, two toothed plates, two gears, two gears, and two rotating shafts. Rotating shafts are rotatably installed in both support frames. Gears are fixedly sleeved on both rotating shafts. Toothed plates are slidably installed on the support frames in a vertical arrangement. The top of toothed plate extends to the top of the support frame and is fixedly connected to the lifting plate. Toothed plates mesh with gears and gears respectively. The left clamping plate and the right clamping plate are located on the side where the two toothed plates are close to each other.

[0011] By adopting the above technical solution, it is possible to control the left and right clamping plates to move closer to each other when the lifting plate moves downward, and at the same time, it is possible to control the left and right clamping plates to move further away from each other when the lifting plate moves upward.

[0012] A further feature of this invention is that the supporting buffer assembly includes two sliding rods, two guide blocks, and two springs. Sliding rods are slidably mounted on both toothed plates, and the sliding rods are arranged parallel to each other. The ends of the two sliding rods that are close to each other are fixedly connected to the left clamping plate and the right clamping plate, respectively. Guide blocks are fixedly mounted on the ends of the two sliding rods that are far from each other. The two guide blocks are slidably connected to the corresponding toothed plates, and springs that are movably sleeved on the outside of the sliding rods are fixedly mounted on the guide blocks. The springs are fixedly connected to the toothed plates.

[0013] By adopting the above technical solution, stable support can be provided for the left and right clamping plates, and a buffering effect can be provided when clamping workpieces. This allows it to adapt well to clamping workpieces of different sizes and ensures that the left clamping plate is adsorbed on the outside of the workpiece through the groove.

[0014] A further feature of this invention is that the diameter of gear one is greater than the diameter of gear two.

[0015] By adopting the above technical solution, the movement speed of the second toothed plate can be made greater than that of the first toothed plate, thereby effectively using the lifting of the lifting plate to control the left and right clamping plates to quickly clamp and release the workpiece.

[0016] A further feature of this invention is that four strip plates are fixedly installed on the top side of the base, the four strip plates are symmetrically distributed on both sides of the lower mold, two conveyor belts are respectively set on the corresponding two strip plates, and the same support plate is fixedly installed on the two strip plates on the same side, the support plate is in contact with the corresponding conveyor belt.

[0017] By adopting the above technical solution, stable support can be provided for the conveyor belt, thereby ensuring the stability of the conveyor belt when transporting workpieces.

[0018] A further feature of this invention is that a collision switch electrically connected to the electric control valve is fixedly installed on the top side of the leftmost strip plate, and the collision switch is adapted to the left clamping plate.

[0019] By adopting the above technical solution, when the left clamping plate moves away from the lower mold, it can collide with the collision switch, thereby controlling the electric control valve to open the pressure relief pipe, so that the air pressure in the groove can be kept in balance with the external air pressure, and thus the left clamping plate can be in a state of adsorption on the workpiece.

[0020] A further feature of this invention is that the right clamping plate has a curved surface on the side closest to the left clamping plate.

[0021] By adopting the above technical solution, it is possible to prevent the workpiece from shifting out of the position between the left clamping plate and the right support plate when pushing and clamping it.

[0022] A further feature of this invention is that the conveyor belt and the top side of the lower mold are located in the same plane.

[0023] By adopting the above technical solution, it is convenient to transfer the workpiece on the conveyor belt and the lower mold by moving the left and right clamping plates.

[0024] A further feature of this invention is that silicone pads are fixedly attached to the sides of the left and right clamping plates that are close to each other.

[0025] By adopting the above technical solution, the friction between the left and right clamping plates and the workpiece can be increased, which can not only effectively improve the stability of clamping, but also avoid the workpiece being scratched due to clamping.

[0026] A further feature of this invention is that the silicone pad located on the left clamp is arranged in a U-shape.

[0027] By adopting the above technical solution, the installation of the silicone pad can avoid affecting the function of the groove, while ensuring the sealing effect between the left clamp and the workpiece when the left clamp is adsorbed onto the workpiece through the groove.

[0028] The beneficial effects of this utility model are:

[0029] 1. High degree of automation: This device, driven by hydraulic cylinders and combined with the design of transmission and support buffer components, realizes automatic feeding, clamping and transfer of workpieces, which greatly improves production efficiency and reduces the difficulty and intensity of manual operation.

[0030] 2. Wide applicability: The spring design in the support and buffer assembly allows the left and right clamping plates to adapt well to workpieces of different sizes, ensuring the stability and accuracy of clamping.

[0031] 3. Easy to operate: The collision switch and the electric control valve are electrically connected to realize the automatic control of the workpiece adsorption state of the left clamping plate. No manual intervention is required, and the operation is simple and quick.

[0032] 4. Safe and reliable: Each component in the device is carefully designed to ensure the stability and safety of operation. At the same time, the use of silicone pads not only avoids scratching the workpiece during the clamping process, but also ensures that the left clamping plate stably adsorbs the workpiece through the groove during unloading. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a three-dimensional structural diagram of an automatic feeding device for a four-column hydraulic press proposed in this utility model;

[0035] Figure 2 To provide another perspective on the structural diagram;

[0036] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0037] Figure 4 for Figure 3 Front view structural diagram;

[0038] Figure 5 This is a schematic diagram of the structure of the toothed plate 1, gear 1, gear 2, rotating shaft, toothed plate 2, slide rod, limiting block, spring, left clamping plate, and groove portion proposed in this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the toothed plate 1, gear 1, gear 2, rotating shaft, toothed plate 2, sliding rod, limiting block, spring and right clamping plate of this utility model;

[0040] Figure 7 for Figure 2 A schematic diagram of the structure of part A.

[0041] In the diagram, 1. Base; 11. Top plate; 12. Support column; 2. Lifting plate; 21. Hydraulic cylinder; 3. Upper mold; 4. Lower mold; 5. Conveyor belt; 51. Strip plate; 52. Support plate; 6. Support frame; 61. Gear 1; 62. Gear 2; 63. Gear plate 1; 64. Gear plate 2; 641. Slide rod; 642. Guide block; 643. Spring; 7. Left clamping plate; 71. Check valve; 72. Electric control valve; 721. Collision switch; 8. Right clamping plate. Detailed Implementation

[0042] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0043] Reference Figure 1-7 An automatic feeding device for a four-column hydraulic press includes a base 1, a top plate 11, four support columns 12, a hydraulic cylinder 21, a lifting plate 2, two conveyor belts 5, two support frames 6, a left clamping plate 7, a right clamping plate 8, a transmission assembly, a support and buffer assembly, an upper mold 3, and a lower mold 4.

[0044] Four support columns 12 are fixedly installed on the side of the base 1 and the top plate 11 that are close to each other and are arranged in parallel. The hydraulic cylinder 21 is fixedly installed on the top plate 11. The lifting plate 2 is slidably installed on the four support columns 12. The working end of the hydraulic cylinder 21 is fixedly installed on the lifting plate 2. The upper mold 3 and the lower mold 4 are fixedly installed on the bottom side of the lifting plate 2 and the top side of the base 1, respectively. Two conveyor belts 5 are both set above the base 1 and are located on both sides of the lower mold 4. Two support frames 6 are both fixedly installed on the top side of the base 1 and are located on the side of the two conveyor belts 5 that are far away from each other.

[0045] The left clamping plate 7 and the right clamping plate 8 are symmetrically arranged on both sides of the lower mold 4. The left clamping plate 7 has a groove on the side closer to the right clamping plate 8. A connecting pipe and a pressure relief pipe are fixedly installed in the groove. A one-way valve 71 and an electric control valve 72 are fixedly installed on the connecting pipe and the pressure relief pipe, respectively. In order to increase the friction between the left clamping plate 7 and the right clamping plate 8 and the workpiece, it can not only effectively improve the stability of clamping, but also avoid the workpiece being scratched due to clamping, and avoid the installation of silicone pads affecting the function of the grooves. At the same time, it can ensure the sealing effect between the left clamping plate 7 and the workpiece when the left clamping plate 7 is adsorbed on the workpiece through the groove. Silicone pads are fixedly pasted on the side of the left clamping plate 7 and the right clamping plate 8 that are close to each other, and the silicone pad on the left clamping plate 7 is arranged in a U-shape.

[0046] Two rotating shafts are rotatably installed inside each of the two support frames 6. Gear 1 61 and Gear 2 62 are fixedly fitted onto each of the two rotating shafts. Vertically arranged toothed plates 63 and 64 are slidably installed on the support frames 6. The top of toothed plate 63 extends above the support frame 6 and is fixedly connected to the lifting plate 2. Toothed plates 63 and 64 mesh with gears 61 and 62 respectively. Left clamping plate 7 and right clamping plate 8 are located on the side of the two toothed plates 64 that are close to each other. When the lifting plate 2 moves downwards, left clamping plate 7 and right clamping plate 8 can be controlled to move closer to each other; simultaneously, when the lifting plate 2 moves upwards, left clamping plate 7 and right clamping plate 8 can be controlled to move further apart. Sliding plates 64 are slidably installed on each of the two toothed plates 64. Rod 641 and slide rod 641 are arranged parallel to each other with toothed plate 64. The ends of the two slide rods 641 that are close to each other are fixedly connected to the left clamping plate 7 and the right clamping plate 8, respectively. The ends of the two slide rods 641 that are far from each other are fixedly installed with guide blocks 642. The two guide blocks 642 are slidably connected to the corresponding toothed plate 64. A spring 643 is fixedly installed on the guide block 642 and movably sleeved on the outside of the slide rod 641. The spring 643 is fixedly connected to the toothed plate 64, which can provide stable support for the left clamping plate 7 and the right clamping plate 8, and at the same time provide a buffering effect when performing workpiece clamping operations. This allows it to adapt well to clamping workpieces of different sizes and ensures that the left clamping plate 7 is adsorbed on the outside of the workpiece through the groove.

[0047] Specifically, in order to make the movement speed of gear plate 2 64 greater than that of gear plate 1 63, so as to effectively use the lifting plate 2 to control the left clamping plate 7 and the right clamping plate 8 to quickly perform workpiece clamping and unclamping operations, the diameter of gear 1 61 is greater than the diameter of gear 2 62.

[0048] Specifically, in order to provide stable support for the conveyor belt 5 and thus ensure the stability of the conveyor belt 5 when conveying the workpiece, four strip plates 51 are fixedly installed on the top side of the base 1. The four strip plates 51 are symmetrically distributed on both sides of the lower mold 4. The two conveyor belts 5 are respectively set on the corresponding two strip plates 51. The same support plate 52 is fixedly installed on the two strip plates 51 on the same side, and the support plate 52 is in contact with the corresponding conveyor belt 5.

[0049] Specifically, in order to enable the collision switch 721 to collide when the left clamping plate 7 moves away from the lower mold 4, thereby controlling the electric control valve 72 to open the pressure relief pipe, so that the air pressure in the groove can be kept in balance with the external air pressure, and thus the left clamping plate 7 can be in a state of adsorption of the workpiece, a collision switch 721 electrically connected to the electric control valve 72 is fixedly installed on the top side of the leftmost strip plate 51, and the collision switch 721 is adapted to the left clamping plate 7.

[0050] Specifically, in order to prevent the workpiece from shifting out of the position between the left clamping plate 7 and the right support plate when pushing and clamping it, the right clamping plate 8 is curved on the side closest to the left clamping plate 7.

[0051] Specifically, in order to facilitate the transfer of workpieces on conveyor belt 5 and lower die 4 by the movement of left clamping plate 7 and right clamping plate 8, the top sides of conveyor belt 5 and lower die 4 are located in the same plane.

[0052] It is worth noting that the dimensions of the groove in the figure are only for illustration. In the actual processing and manufacturing process, the shape of the groove can be set by the technical personnel according to the actual needs. At the same time, the shape of the silicone pad on the left clamping plate 7 should be adjusted accordingly to change the shape of the groove. Also, the curved surface used on the side of the right clamping plate 8 that is close to the left clamping plate 7 should be selected according to the actual use.

[0053] Working principle: When the automatic feeding device of this four-column hydraulic press is working, the power is first turned on, and the workpiece is moved to the right side of the lower mold 4 by the right conveyor belt 5 (at this time, the workpiece and the top surface of the lower mold 4 are kept in the same plane). The hydraulic cylinder 21 drives the lifting plate 2 to descend.

[0054] Clamping trigger: During the downward movement of the upper mold 3 controlled by the lifting plate 2, the toothed plate 63 is pressed down. The gear 61 (large diameter) drives the gear 62 (small diameter), causing the toothed plate 64 to move towards the center at a faster speed. The slide rod 641 pushes the left clamping plate 7 and the right clamping plate 8 (arc surface anti-offset) to quickly clamp the workpiece, so that the workpiece on the right conveyor belt 5 is pushed onto the lower mold 4 and clamped on the lower mold 4 in the cooperation of the left clamping plate 7, located directly below the upper mold 3. In this state, the silicone pad (the silicone pad on the left clamping plate 7 has a U-shaped design) is attached to the surface of the workpiece. The connecting pipe in the groove forms a negative pressure adsorption through the one-way valve 71, and the spring 643 provides buffering, so as to adapt well to the clamping of workpieces of different sizes.

[0055] Pressing coordination: The lifting plate 2 continues to descend, and the upper mold 3 and lower mold 4 complete the workpiece pressing. At this time, the left clamping plate and the right clamping plate maintain the clamping state to prevent the workpiece from shifting.

[0056] Release logic: After pressing is completed, lifting plate 2 rises, and toothed plate 64 retreats rapidly with the reverse rotation of gear 62 and gear 61. At this time, right clamping plate 8 directly detaches from the workpiece after pressing, while left clamping plate 7 is still in an adsorption state with the workpiece, so the workpiece after pressing can move with left clamping plate 7 to the left conveyor belt 5, thus achieving the effect of self-unloading. As left clamping plate 7 continues to retreat, it can control the electric control valve 72 to open the pressure relief pipe and realize the pressure relief in the groove when it collides with collision switch 721, thereby releasing the adsorption state between left clamping plate 7 and workpiece, and thus completing the detachment of workpiece.

[0057] Circular feeding: After the clamping plate is fully reset, the conveyor belt 5 continues to transport the next workpiece. The spring 643 and the guide block 642 ensure that the slide bar 641 returns to its position smoothly. The support plate 52 supports the conveyor belt 5 to maintain the stability of workpiece transportation.

[0058] The above provides a detailed description of the automatic feeding device for a four-column hydraulic press provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An automatic feeding device for a four-column hydraulic press, characterized in that, It includes a base (1), a top plate (11), four support columns (12), a hydraulic cylinder (21), a lifting plate (2), two conveyor belts (5), two support frames (6), a left clamping plate (7), a right clamping plate (8), a transmission assembly, a support and buffer assembly, an upper mold (3), and a lower mold (4); Four support columns (12) are fixedly installed on the side of the base (1) and the top plate (11) that are close to each other and are arranged in parallel. The hydraulic cylinder (21) is fixedly installed on the top plate (11). The lifting plate (2) is slidably installed on the four support columns (12). The working end of the hydraulic cylinder (21) is fixedly installed on the lifting plate (2). The upper mold (3) and the lower mold (4) are fixedly installed on the bottom side of the lifting plate (2) and the top side of the base (1), respectively. Two conveyor belts (5) are both set above the base (1) and are located on both sides of the lower mold (4), respectively. Two support frames (6) are both fixedly installed on the top side of the base (1) and are located on the side of the two conveyor belts (5) that are far apart from each other, respectively. The transmission assembly is set on the two support frames (6) and connected to the lifting plate (2). The support buffer assembly is set on the transmission assembly. The left clamping plate (7) and the right clamping plate (8) are both set on the support buffer assembly and are arranged symmetrically on both sides of the lower mold (4). The left clamp (7) has a groove on the side near the right clamp (8). A connecting pipe and a pressure relief pipe are fixedly installed in the groove, and a one-way valve (71) and an electric control valve (72) are fixedly installed on the connecting pipe and the pressure relief pipe, respectively.

2. The automatic feeding device for a four-column hydraulic press according to claim 1, characterized in that: The transmission assembly includes two toothed plates (63), two toothed plates (64), two gears (61), two gears (62), and two rotating shafts. Rotating shafts are rotatably installed in both support frames (6). Gears (61) and (62) are fixedly sleeved on both rotating shafts. Toothed plates (63) and (64) are slidably installed on the support frames (6) in a vertical arrangement. The top of toothed plate (63) extends to the top of the support frame (6) and is fixedly connected to the lifting plate (2). Toothed plates (63) and (64) mesh with gears (61) and (62) respectively. The left clamping plate (7) and the right clamping plate (8) are located on the side where the two toothed plates (64) are close to each other.

3. The automatic feeding device for a four-column hydraulic press according to claim 2, characterized in that: The support and buffer assembly includes two slide rods (641), two guide blocks (642), and two springs (643). Slide rods (641) are slidably mounted on both toothed plates (64). The slide rods (641) and toothed plates (64) are arranged parallel to each other. The ends of the two slide rods (641) that are close to each other are fixedly connected to the left clamping plate (7) and the right clamping plate (8), respectively. The ends of the two slide rods (641) that are far apart from each other are fixedly mounted with guide blocks (642). The two guide blocks (642) are slidably connected to the corresponding toothed plates (64). Springs (643) that are movably sleeved on the outside of the slide rods (641) are fixedly mounted on the guide blocks (642). The springs (643) are fixedly connected to the toothed plates (64).

4. The automatic feeding device for a four-column hydraulic press according to claim 2, characterized in that: The diameter of gear one (61) is greater than the diameter of gear two (62).

5. The automatic feeding device for a four-column hydraulic press according to claim 1, characterized in that: Four strip plates (51) are fixedly installed on the top side of the base (1). The four strip plates (51) are symmetrically distributed on both sides of the lower mold (4). Two conveyor belts (5) are respectively set on the corresponding two strip plates (51). The same support plate (52) is fixedly installed on the two strip plates (51) on the same side. The support plate (52) is in contact with the corresponding conveyor belt (5).

6. The automatic feeding device for a four-column hydraulic press according to claim 5, characterized in that: A collision switch (721) electrically connected to the electric control valve (72) is fixedly installed on the top side of the leftmost strip plate (51), and the collision switch (721) is compatible with the left clamp plate (7).

7. The automatic feeding device for a four-column hydraulic press according to claim 1, characterized in that: The right clamp (8) is curved on the side closest to the left clamp (7).

8. The automatic feeding device for a four-column hydraulic press according to claim 1, characterized in that: The top side of the conveyor belt (5) and the lower mold (4) are located in the same plane.

9. The automatic feeding device for a four-column hydraulic press according to claim 1, characterized in that: Silicone pads are fixedly pasted on the sides of the left clamp (7) and right clamp (8) that are close to each other.

10. The automatic feeding device for a four-column hydraulic press according to claim 1, characterized in that: The silicone pad located on the left clamp (7) is arranged in a U-shape.

Images