A front-end sheet servo feeding device

Abstract

This invention provides a front-end sheet servo feeding device. Through the coordinated action of components such as a servo cylinder, guide block, guide rod, elastic pusher, rolling shaft, and driven shaft, it achieves stable, continuous, and rhythmically controllable feeding of metal sheets. During operation, the servo cylinder is fixed to the first base, and its drive end is rigidly connected to the guide block, allowing the guide block to perform reciprocating linear motion along the guide rod. To ensure the motion accuracy of the guide block relative to the guide rod, a linear bearing is provided at the connection point. The rolling support of the linear bearing makes the movement of the guide block smoother, avoiding vibration or offset caused by uneven friction. Under the unified control of the punch press control cabinet, the servo cylinder sends a push signal according to the speed of each punching action of the punch press, causing the guide block to drive the elastic pusher fixed on it to apply a pushing force to the tail end of the sheet. This pushing force ensures that the sheet has a stable initial forward trend before being clamped.

Description

Technical Field

[0001] This utility model relates to the field of feeding equipment technology, and in particular to a front-end sheet servo feeding device. Background Technology

[0002] In existing easy-open canister processing and production, the sheet feeding mechanism that works with the punch press generally adopts a fixed-stroke pushing device driven by a mechanical linkage or a common motor. Its working rhythm is preset and fixed when the equipment is started. However, in the actual high-speed continuous stamping process, the operation of the punch press spindle will generate slight speed disturbances due to load changes, lubrication status, or voltage fluctuations. This dynamic change cannot be responded to by the rigidly connected feeding mechanism, causing the sheet's advance phase to gradually deviate from the opening and closing rhythm of the punch press die. Over time, this asynchrony will cause the sheet to be over-pushed, pulled, or even piled up at the die entrance, which not only affects the positioning accuracy of the punch canister and generates a large number of scraps, but also causes jamming and machine stoppage, seriously restricting production efficiency and product quality stability.

[0003] For example, patent publication number CN208712709U, titled "Utility Model Patent for a Thin Sheet Material Feeding Device," discloses a thin sheet material feeding device, belonging to the field of material conveying technology. This device includes a worktable with a conveying trough. The conveying trough has a first and a second parallel slide rail along the conveying direction. A first pusher is slidably connected to the first slide rail, and a second pusher is slidably connected to the second slide rail. The first pusher is connected to a first driving device, and the second pusher is connected to a second driving device. Both the first and second driving devices are connected to a controller. The first and second pushers alternately push the thin sheet material. This utility model avoids the slippage problem that easily occurs with existing belt conveyors by using the first and second pushers to push the thin sheet material. Furthermore, the controller adjusts the operating status of the first and second driving devices during feeding, greatly improving the conveying efficiency and accuracy of the thin sheet material.

[0004] The aforementioned existing technology only uses a pusher for feeding, which has the problem that the speed at which the sheet is pushed forward cannot match the production stamping speed of the punch press for a long time. Utility Model Content

[0005] Therefore, there is a need to provide a front-end sheet servo feeding device to solve the problem that the existing technology, which only uses a pusher for feeding, cannot match the speed at which the sheet is pushed forward with the production stamping speed of the punch press for a long time.

[0006] To achieve the above objectives, this utility model provides a front-end sheet servo feeding device, including a first base, a servo electric cylinder, a guide block, an elastic pusher, a guide rod, a second base, a servo motor, a rolling shaft, and a driven shaft;

[0007] The first base is fixed to the support surface, the servo cylinder is fixedly mounted on the first base, the drive end of the servo cylinder is fixedly connected to the guide block, the guide rod is arranged along the feeding direction and slidably connected to the guide block, the drive end of the servo cylinder pushes the guide block to reciprocate along the direction of the guide rod; a linear bearing is provided at the connection between the guide block and the guide rod; the elastic pusher is fixedly mounted on the top of the guide block and is used to apply a pushing force to the sheet as the guide block moves; the second base is located on the front side of the guide rod, the drive end of the servo motor is fixedly connected to the rolling shaft shaft, the two ends of the rolling shaft are rotatably mounted on the second base, the driven shaft is rotatably mounted on the second base and arranged vertically with the rolling shaft to form a clamping gap for the sheet; both the servo cylinder and the servo motor are electrically connected to the punch press control cabinet.

[0008] Furthermore, the surface of the rolling shaft or driven shaft is provided with a pattern.

[0009] Furthermore, there are multiple guide rods.

[0010] Furthermore, there are multiple elastic push claws.

[0011] Furthermore, it also includes a limiting rod, which is fixedly mounted on the second base and is located on the front side of the driven shaft and parallel to each other.

[0012] Furthermore, the guide block has an I-shaped structure, including a main body and four guide grooves located on both sides of it. Two guide grooves on the same side are slidably connected to the same guide rod. The front or rear of the main body is fixedly connected to the drive end of the servo electric cylinder. The guide groove has a through hole in the feeding direction that matches the size of the guide rod. The linear bearing is installed in the through hole, and the guide rod passes through the linear bearing.

[0013] Furthermore, baffles are provided at both ends of the guide rod.

[0014] Furthermore, the end of the elastic pusher is provided with a bushing.

[0015] Unlike existing technologies, the above-mentioned technical solution achieves stable, continuous, and rhythmically controllable feeding of metal sheets through the coordinated action of components such as servo cylinders, guide blocks, guide rods, elastic push claws, rolling shafts, and driven shafts. During equipment operation, the servo cylinder is fixed on the first base, and its drive end is rigidly connected to the guide block, allowing the guide block to perform reciprocating linear motion along the direction of the guide rod. To ensure the motion accuracy of the guide block relative to the guide rod, a linear bearing is provided at its connection point. The rolling support of the linear bearing makes the movement of the guide block smoother and avoids vibration or deviation caused by uneven friction. Under the unified control of the punch press control cabinet, the servo cylinder sends a push signal according to the speed of each punching action of the punch press, causing the guide block to drive the elastic push claw fixed on it to apply a pushing force to the tail end of the sheet. This pushing force ensures that the sheet has a stable initial forward trend before being clamped. Attached Figure Description

[0016] Figure 1 A three-dimensional structural view of a front-end sheet material feeding device as described in the specific embodiment;

[0017] Figure 2 This is a front view of the structure of a front-end sheet feeding device according to a specific embodiment;

[0018] Figure 3 A top view of the structure of a front-end sheet feeding device as described in the specific embodiment;

[0019] Figure 4 A top view of the structure of a front-end sheet feeding device as described in the specific embodiment;

[0020] Figure 5 The right view of the structure of a front-end sheet feeding device as described in the specific embodiment;

[0021] Figure 6 The right view of the structure of a front-end sheet feeding device as described in the specific embodiment.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. First base; 20. Servo electric cylinder; 30. Guide block; 301. Main body; 302. Guide groove; 303. Through hole; 40. Elastic push claw; 50. Guide rod; 60. Second base; 70. Servo motor; 80. Rolling shaft; 90. Driven shaft; 91. Limiting rod; 94. Baffle. Detailed Implementation

[0024] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0025] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0026] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0027] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0028] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0029] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0030] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0031] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0032] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] Please see Figures 1 to 6 This embodiment provides a front-end sheet servo feeding device, including a first base 10, a servo electric cylinder 20, a guide block 30, an elastic pusher 40, a guide rod 50, a second base 60, a servo motor 70, a rolling shaft 80, and a driven shaft 90;

[0034] The first base 10 is fixed to the support surface, and the servo cylinder 20 is fixedly mounted on the first base 10. The drive end of the servo cylinder 20 is fixedly connected to the guide block 30. The guide rod 50 is arranged along the feeding direction and slidably connected to the guide block 30. The drive end of the servo cylinder 20 pushes the guide block 30 to reciprocate along the direction of the guide rod 50. A linear bearing is provided at the connection between the guide block 30 and the guide rod 50. The elastic pusher 40 is fixedly mounted on the upper part of the guide block 30. The guide block 30 moves to apply a pushing force to the sheet material; the second base 60 is disposed on the front side of the guide rod 50; the drive end of the servo motor 70 is fixedly connected to the rolling shaft 80 on the shaft-to-shaft; the two ends of the rolling shaft 80 are rotatably disposed on the second base 60; the driven shaft 90 is rotatably disposed on the second base 60 and is arranged vertically with the rolling shaft 80 to form a clamping gap for the sheet material; both the servo cylinder 20 and the servo motor 70 are electrically connected to the punch press control cabinet.

[0035] This embodiment achieves stable, continuous, and rhythmically controllable feeding of metal sheets through the coordinated action of components such as the servo cylinder 20, guide block 30, guide rod 50, elastic pusher 40, rolling shaft 80, and driven shaft 90. During equipment operation, the servo cylinder 20 is fixed on the first base 10, and its drive end is rigidly connected to the guide block 30, allowing the guide block 30 to perform reciprocating linear motion along the direction of the guide rod 50. To ensure the motion accuracy of the guide block 30 relative to the guide rod 50, a linear bearing is provided at its connection point. The rolling support of the linear bearing makes the movement of the guide block 30 smoother and avoids vibration or deviation caused by uneven friction. Under the unified control of the punch press control cabinet, the servo cylinder 20 sends a push signal according to the speed of each punching action of the punch press, causing the guide block 30 to drive the elastic pusher 40 fixed on it to apply a pushing force to the tail end of the sheet. This pushing force ensures that the sheet has a stable initial forward trend before being clamped.

[0036] Once the sheet material is pushed by the elastic pusher 40 into the clamping gap between the rolling shaft 80 and the driven shaft 90, the servo motor 70 mounted on the second base 60 begins to drive the rolling shaft 80 to rotate. The servo motor 70 is connected to the drive end of the rolling shaft 80 via a coupling, achieving highly responsive power transmission. The rolling shaft 80 and the driven shaft 90 are arranged parallel to each other, forming a transmission channel capable of clamping the sheet material. Under the control of the servo motor 70, the rolling shaft 80 begins to rotate, and together with the driven shaft 90, it forms a clamping and conveying effect on the sheet material. Since the servo motor 70 is also connected to the punch press control cabinet, its output speed is matched in real time with the punch press processing cycle, thereby ensuring that the sheet material advance is consistent with the step distance required for one punch press stroke.

[0037] The core of this equipment lies in the synchronized control of the periodic pushing action of the servo electric cylinder 20 and the continuous rotation action of the servo motor 70. The punch press control cabinet, acting as the brain of the equipment, issues precise timing control commands to the servo electric cylinder 20 and the servo motor 70 through internal software and circuit modules. This software and circuitry utilize existing technology, enabling the acquisition, output, adjustment, and real-time monitoring of control signals. After the punch press completes one feeding or punching cycle, the control cabinet rapidly drives the servo electric cylinder 20 to perform the next pushing action according to a preset rhythm. Simultaneously, the servo motor 70 makes fine adjustments based on the clamping state of the sheet material, achieving a high degree of matching between the feeding rhythm and the punch press's operating frequency.

[0038] Through the combination of the above-mentioned technical features, this embodiment achieves the following beneficial effects: First, the combination structure of the guide rod 50, guide block 30, and linear bearing ensures the stability of the guiding mechanism, preventing lateral swaying of the sheet material due to guiding deviation; Second, the elastic thrust applied by the elastic pusher 40 enables the sheet material to adapt to minor changes on the sheet surface during the initial stage of feeding, improving fit and preventing scratches on the sheet material by the pusher; Third, the servo motor 70 drives the rolling shaft 80 and driven shaft 90 to clamp the sheet material, achieving continuous and stable feeding action and preventing the sheet material from jumping or slipping; Fourth, the servo motor 70 and servo electric cylinder 20 are synchronously controlled with the control cabinet, ensuring that the entire feeding process perfectly matches the processing rhythm of the punch press, improving production efficiency and reducing errors.

[0039] In some embodiments, the surface of the rolling shaft 80 or driven shaft 90 is patterned. As the active transmission component for the sheet, the patterned surface of the rolling shaft 80 effectively enhances the surface friction between it and the metal sheet, thereby improving clamping stability. The pattern can take various forms, such as straight stripes, grids, rhombuses, waves, or dotted protrusions. Different pattern textures can be selected based on the sheet surface condition and the equipment's application. For example, straight stripes distributed axially provide continuous, linear friction along the feeding direction after clamping, suitable for processing scenarios with relatively smooth sheet surfaces. Rhombus or grid patterns form intersecting protrusions and concave surfaces on the shaft surface, providing resistance in multiple directions, suitable for preventing lateral slippage or displacement of the sheet under uneven force. The working principle of the patterned surface is mainly reflected in the following aspects: First, by changing the contact surface shape between the rolling shaft 80 and the sheet, the contact surface is no longer a completely flat line contact, but forms a micro-protrusion contact, increasing the contact friction in the pressing area and improving the stability of the sheet when it is clamped; Second, the patterned structure can play a certain biting effect when the sheet passes through, especially when there are oil stains or lubricant residues on the sheet surface, its anti-slip ability is significantly improved compared to smooth rollers; Third, the pattern can appropriately reduce the contact area between the sheet and the rolling shaft 80, increasing the local pressure and thus improving the transmission efficiency.

[0040] Based on the aforementioned pattern effects, a flexible coating treatment can be applied to a certain type of pattern, such as covering the pattern structure with a wear-resistant and elastic coating layer. This coating layer can form a flexible filler in the gaps between the patterns, allowing the patterns to maintain a basic friction-enhancing effect when in contact with the sheet, while also producing a small amount of deformation under stress, providing a cushioning effect for the sheet. Its working principle is that through a combination of soft and hard structures, the rolling shaft 80 prevents the pattern from being too sharp and scratching the sheet surface when clamping it, making it particularly suitable for metal sheets whose surfaces are prone to indentation. Its beneficial effects include significantly improving equipment applicability, enabling the rolling shaft 80 to possess both high friction and enhanced protection of the sheet surface, thereby improving product yield.

[0041] In some embodiments, there are multiple guide rods 50. Arranging multiple guide rods 50 enhances the motion stability of the guide block 30 during reciprocating motion. As a trajectory limiting component for the guide block 30, the increased number of guide rods 50 provides constraint on the guide block 30 in multiple directions, preventing it from swaying or rotating due to inertia or external forces during operation. For example, when two guide rods 50 are arranged in parallel, the guide block 30 can form a sliding engagement with them through multiple guide grooves, making deflection virtually impossible and keeping the reciprocating motion within a predetermined straight trajectory. This is crucial for feeding metal sheets, because deviation from the sheet's forward direction can lead to alignment errors with the rolling shaft 80, affecting the clamping effect and even damaging the sheet edges. The beneficial effect of multiple guide rods 50 also lies in the uniformity of force distribution. When the guide block 30 moves under the drive of the servo electric cylinder 20, its motion force often causes localized stress concentration on the guide rod 50. As the number of guide rods 50 increases, the force is distributed across different guide rods 50, preventing excessive stress on a single guide rod 50, which could lead to accelerated wear or deformation. The linear bearing installed between the guide block 30 and the guide rod 50 can also distribute the rolling load more evenly in a multi-guide rod 50 structure, improving the overall service life.

[0042] Furthermore, one of the multiple guide rods 50 can be selected as an adjustable structure. For example, an adjustment mechanism can be provided at the end of one of the guide rods 50 on the second base 60 or the first base 10, and the movement clearance of the guide block 30 can be fine-tuned by adjusting its relative position. The principle is that fine-tuning the position of the guide rod 50 can compensate for the wear of the guide groove caused by long-term use, thereby restoring the fitting accuracy of the guide block 30. Its beneficial effects are that it makes the equipment more stable and maintainable in the long term, and can restore the guide structure through fine-tuning without disassembling the guide block 30, thereby improving the overall lifespan of the equipment and reducing maintenance costs.

[0043] In some embodiments, there are multiple elastic pushers 40. By having multiple elastic pushers 40 simultaneously act on the tail end of the metal sheet, the uniformity of the pushing force can be effectively improved. A single elastic pusher 40 may not provide sufficient coverage due to the large width of the sheet; however, by setting multiple pushers, the force can be rationally distributed according to the width of the sheet, making the pushing force more balanced along the width direction of the sheet. The elastic pushers 40 themselves have an elastic structure, and under the action of the guide block 30, they can apply a flexible pushing force to the sheet, preventing local stress concentration at the tail end of the sheet when it is pushed forward. The simultaneous action of multiple pushers also has an anti-deviation effect. When the sheet wobbles due to its own curvature, residual deformation from processing, or uneven force, the multi-point pushing force can automatically adjust the center of force, making it easier for the sheet to maintain a straight forward trend and maintain correct alignment with the rear rolling shaft 80 and driven shaft 90. In this way, a more ideal posture can be achieved before the sheet enters the clamping gap, reducing the deviation when the rolling shaft 80 clamps it.

[0044] Furthermore, an adjustable pusher is incorporated among the multiple pushers. This pusher's lateral position on the guide block 30 can be changed via a simple slide or adjustment mechanism, allowing for rapid adjustment to accommodate sheets of different widths. The principle behind this is to make the pusher array more flexible, enabling rapid adaptation to various sheet widths through a single adjustable pusher. Its beneficial effect is improved equipment versatility, allowing the equipment to be used with different specifications of metal sheets without requiring replacement of the entire pusher structure, thus improving production line changeover efficiency.

[0045] In some embodiments, a limiting rod 91 is also included. The limiting rod 91 is fixedly mounted on the second base 60 and is located in front of the driven shaft 90 and parallel to it. The function of the limiting rod 91 is to provide spatial restriction for the sheet material, keeping it on a predetermined plane as it is pushed forward by the rolling shaft 80. Because the front end of the metal sheet tends to tilt upwards after being clamped by the rolling shaft 80 and the driven shaft 90, especially when the sheet material is thin or soft, this deformation can cause instability in the sheet material's posture before entering the stamping die area, and may even lead to jamming. Therefore, the limiting rod 91 restricts the upper surface of the sheet material, keeping it on a plane consistent with the stamping production trajectory. The limiting rod 91 restricts the sheet material in a non-contact or light-pressure manner, and its working principle is to provide a geometric boundary for the sheet material, forcing it to maintain a low-lying parallel posture. When the two limiting rods 91 are arranged in parallel, they can also provide a certain lateral guiding effect on the sheet, preventing lateral deviation during forward movement. Furthermore, a flexible covering layer can be provided on the limiting rods 91 to prevent scratches from being left on the sheet due to contact between the metal surface and the metal rod when it lightly touches the limiting rods 91. The flexible covering layer has a dual function of cushioning and protection, effectively reducing the risk of surface wear on the sheet and improving the appearance quality of the product.

[0046] In some embodiments, the guide block 30 has an I-shaped structure, including a main body 301 and four guide grooves 302 located on both sides thereon. Two guide grooves 302 on the same side are slidably connected to the same guide rod 50. The front or rear of the main body 301 is fixedly connected to the drive end of the servo cylinder 20. The guide grooves 302 have through holes 303 in the feeding direction that are adapted to the size of the guide rod 50. A linear bearing is installed in the through hole 303, and the guide rod 50 passes through the linear bearing. In this structure, the main body 301 serves as the force center and is rigidly connected to the drive end of the servo cylinder 20 through a connector, so that the thrust of the servo cylinder 20 can be fully transmitted to the guide block 30. The servo cylinder 20 is arranged below the guide block 30, and the thrust is transmitted vertically to the main body 301 and then distributed to each guide groove 302, making the movement smoother. The guide groove section 302 has through holes 303 in the feeding direction, and a linear bearing is installed inside the through holes 303, allowing the guide groove to move smoothly along the guide rods 50. Two guide rods 50 pass through the two guide grooves, forming a stable double-rail guide structure, making the guide block 30 less prone to deflection. The I-beam structure gives the guide block 30 good rigidity distribution, enabling it to maintain shape stability under stress. Furthermore, a detachable linear bearing structure can be installed in the guide groove section 302, allowing for quick replacement after wear, improving equipment maintenance efficiency. The principle is that the modular design allows the linear bearing to be replaced without completely disassembling the guide block 30, reducing downtime.

[0047] In some embodiments, baffles 94 are provided at both ends of the guide rod 50. The function of the baffles 94 is to limit the range of motion of the guide block 30, preventing excessive movement of the guide block 30 due to program abnormalities or servo cylinder 20 malfunctions, which could damage the equipment or cause it to detach from the guide rod 50. The baffles 94 are installed at both ends of the guide rod 50 to limit the reciprocating stroke of the guide block 30 through physical blocking. The beneficial effects of the baffles 94 are not only reflected in safety, but also in that they can serve as a stroke reference point during equipment debugging, making the zero-point calibration of the servo cylinder 20 more convenient. In addition, the baffles 94 can reduce the risk of the guide block 30 hitting the base and extend the equipment life. Furthermore, baffles 94 with a buffer layer can be provided so that the guide block 30 will not rebound violently when it accidentally hits the baffles 94, protecting the mechanical structure of the guiding mechanism and the servo cylinder 20.

[0048] In some embodiments, the end of the elastic pusher 40 is provided with a bushing. The bushing can be made of wear-resistant rubber, polyurethane, resin, nylon, or other common flexible wear-resistant materials. The function of the bushing includes flexible cushioning, friction reduction, protection of the sheet surface, and increasing adhesion when in contact with the sheet. Although the elastic pusher 40 itself is elastic, if its end is made of metal, it may cause local indentations on the surface of the sheet when pushing it. Therefore, by adding a bushing to the end, the contact characteristics can be significantly improved. The bushing will produce appropriate flexible deformation when contacting the tail end of the sheet, so that the pushing force is transmitted to the sheet more evenly and no hard impact is generated, thereby improving the feeding stability. At the same time, the friction properties of the bushing are more suitable for contact with metal sheets, which can improve adhesion and prevent the pusher from slipping during rapid advancement.

[0049] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A front-end sheet servo feeding device, characterized in that: It includes a first base, a servo electric cylinder, a guide block, an elastic pusher, a guide rod, a second base, a servo motor, a rolling shaft, and a driven shaft; The first base is fixed to the support surface, the servo cylinder is fixedly mounted on the first base, the drive end of the servo cylinder is fixedly connected to the guide block, the guide rod is arranged along the feeding direction and slidably connected to the guide block, the drive end of the servo cylinder pushes the guide block to reciprocate along the direction of the guide rod; a linear bearing is provided at the connection between the guide block and the guide rod; the elastic pusher is fixedly mounted on the top of the guide block and is used to apply a pushing force to the sheet as the guide block moves; the second base is located on the front side of the guide rod, the drive end of the servo motor is fixedly connected to the rolling shaft shaft, the two ends of the rolling shaft are rotatably mounted on the second base, the driven shaft is rotatably mounted on the second base and arranged vertically with the rolling shaft to form a clamping gap for the sheet; both the servo cylinder and the servo motor are electrically connected to the punch press control cabinet.

2. The front-end sheet servo feeding device according to claim 1, characterized in that: The surface of the rolling shaft or driven shaft is patterned.

3. The front-end sheet servo feeding device according to claim 1, characterized in that: There are multiple guide rods.

4. The front-end sheet servo feeding device according to claim 1, characterized in that: There are multiple elastic push claws.

5. The front-end sheet servo feeding device according to claim 1, characterized in that: It also includes a limiting rod, which is fixedly mounted on the second base and is located on the front side of the driven shaft and parallel to each other.

6. The front-end sheet servo feeding device according to claim 1, characterized in that: The guide block has an I-shaped structure, including a main body and four guide grooves located on both sides. Two guide grooves on the same side are slidably connected to the same guide rod. The front or rear of the main body is fixedly connected to the drive end of the servo electric cylinder. The guide groove has a through hole in the feeding direction that matches the size of the guide rod. The linear bearing is installed in the through hole, and the guide rod passes through the linear bearing.

7. The front-end sheet servo feeding device according to claim 1, characterized in that: The guide rod is provided with baffles at both ends.

8. The front-end sheet servo feeding device according to claim 1, characterized in that: The end of the elastic pusher is provided with a bushing.

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