Push plate for stacking machine

Abstract

The push plate comprises a push plate body, a soft scraping plate, a pressing plate, push teeth and scraping teeth, the push plate body is connected with a push arm through screws, the push teeth are arranged at the bottom of the push plate body at equal intervals in the length direction, and the soft scraping plate and the pressing plate are embedded into a positioning groove in the side portion of the push plate body in a stepped mode. A first protrusion and a second protrusion which are attached to the blades are arranged on the two sides of the soft scraper blade, the scraping teeth are fixed to the soft scraper blade and correspond to the pushing teeth in a one-to-one mode, under pushing of the pushing arm, the pushing teeth are matched with the blades in a clearance staggered mode, the scraping teeth slide along with the force, and the protrusions are attached to the blades, so that quantitative, stable and lossless pushing of products is achieved. The problems that in an existing structure, pushing is not accurate, products are prone to being scratched, and the pushing plate structure is loosened are solved.

Description

Technical Field

[0001] This utility model belongs to the field of automated logistics equipment technology, specifically relating to a push plate for a stacker crane. Background Technology

[0002] Stacking equipment is widely used in packaging, logistics, and manufacturing industries to stack single or multiple products into neat layers according to a specific arrangement, facilitating subsequent handling, storage, or transportation. During stacking operations, the pusher structure, as a key actuator, is typically responsible for pushing the target product along a predetermined trajectory from the conveyor area to the stacking area. Its structure and performance directly affect stacking efficiency and the stability of product stacking.

[0003] Most existing stacker crane pushers use a single flat-push structure, where a single flat plate pushes the product to the stacking area. However, this type of structure often suffers from inaccurate quantity pushing or product misalignment when pushing multiple products, due to the lack of a positioning mechanism. This is especially problematic when there are small gaps between products or when precise positioning is required for pushing multiple products, making it difficult for existing structures to achieve efficient and stable operation. Furthermore, the small contact area between the pusher and the product can easily lead to localized stress concentration, increasing the risk of product surface scratches, slippage, or uneven pushing, severely impacting stacking quality and product integrity. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a pusher plate for a stacker crane, which can accurately control the number of products pushed out and improve the stability of the pushing process and the fit of the pushing surface.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A push plate for a stacker crane includes a push plate connected to a push arm, wherein a soft scraper and a pressure plate are provided on one side of the push plate, and the soft scraper is located between the push plate and the pressure plate.

[0007] The bottom of the push plate is provided with push teeth at equal intervals along its length;

[0008] The soft scraper is fixedly connected with scraping teeth corresponding to the pushing teeth;

[0009] The pusher arm pushes the pusher plate to move on the linear stacker chip sorter, pushing the products placed on the blades onto the stacker compressor;

[0010] Furthermore, during the process of pushing the product, the pusher teeth and blades are arranged alternately.

[0011] Furthermore, a positioning groove is provided on one side of the push plate, and the positioning groove is stepped.

[0012] The soft scraper and the pressure plate are respectively embedded in the positioning groove.

[0013] Furthermore, a first connecting hole is provided through the positioning groove;

[0014] A third connecting hole corresponding to the first connecting hole is provided through the soft scraper;

[0015] The pressure plate has a fourth connecting hole corresponding to the first connecting hole.

[0016] Furthermore, a second connecting hole is provided through the upper side of the push plate, which is used to install screws that connect the push plate and the push arm.

[0017] Furthermore, a first protrusion and a second protrusion are fixedly connected to both sides of the soft scraper.

[0018] Furthermore, during the product propulsion process, both the first and second protrusions adhere to the blade.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention utilizes multiple equally spaced push teeth at the bottom of the pusher plate. The push teeth and blades form an interlocking structure, allowing the push teeth to precisely insert into the gap between the product and the blade during each push, thus achieving accurate control over the quantity of the target product. This structure effectively solves the problem of uncertain product ejection caused by the lack of a limiting mechanism in existing pusher plate structures, improving quantitative control during stacking and ensuring stacking neatness and efficiency.

[0021] This invention utilizes a composite structure of a soft scraper and a pressure plate on a push plate. The soft scraper, made of flexible polyurethane material, effectively conforms to the product surface during pushing and prevents scratches. Simultaneously, the pressure plate provides rigid support to prevent deformation or dislocation of the soft scraper under pressure. This structure solves the problems of small contact area between the push plate and the product, concentrated force, and easy product damage associated with traditional push plates, significantly improving stability and product integrity protection during the pushing process.

[0022] This invention features a stepped positioning groove between the push plate, soft scraper, and pressure plate, which are securely connected by three sets of corresponding connecting holes and screws to form an integrated limiting and fixing structure, preventing structural loosening or misalignment during the pushing process. This design improves assembly accuracy and structural stability, solving the problems of unstable connection between the scraper and push plate and easy loosening during operation in existing push plate structures, thus ensuring long-term stable operation of the equipment.

[0023] This invention features a first and a second protrusion on both sides of the soft scraper that adhere to the blade. This structure allows it to closely adhere to the blade surface during product pushing, increasing the contact area with the product and thus enhancing the uniformity and stability of the thrust transmission. This structure effectively addresses the problems of small contact area between the pusher plate and the product, and uneven thrust causing product misalignment in existing equipment, thereby improving the consistency and neatness of product stacking.

[0024] This invention features a connection hole on the push plate for fixing to the push arm, and the connection method employs a threaded locking mechanism combined with an anti-loosening washer design to ensure that the push plate is not prone to loosening or displacement during high-frequency operation. This connection structure effectively solves the problems of weak connection between the traditional push plate and push arm, and easy loosening during long-term operation, significantly improving the reliability and safety of the entire machine. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the push plate of this utility model;

[0028] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Push plate;

[0031] 11. Positioning groove; 111. First connecting hole;

[0032] 12. Push tooth; 13. Second connecting hole;

[0033] 2. Soft scraper;

[0034] 21. Third connecting hole; 22. Scraping teeth; 221. First protrusion; 222. Second protrusion;

[0035] 3. Pressure plate; 31. Fourth connecting hole. Detailed Implementation

[0036] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0037] Example 1:

[0038] See Figure 1-4 A pusher plate for a stacker crane includes a pusher plate 1 connected to a pusher arm. The pusher plate 1 is made of high-strength wear-resistant alloy steel with a thickness of 8mm to ensure structural stability and resistance to deformation during long-term pushing. A soft scraper 2 and a pressure plate 3 are provided on one side of the pusher plate 1. The soft scraper 2 is located between the pusher plate 1 and the pressure plate 3 and is molded from polyurethane elastic material, possessing good elasticity and flexibility, effectively conforming to the product surface and preventing surface scratches. The pressure plate 3 is made of stainless steel and is slightly larger than the soft scraper 2, providing clamping support and enhancing scraper stability. Multiple push teeth 12 are evenly spaced along the length of the bottom of the pusher plate 1. The push teeth 12 are fixed to the lower part of the pusher plate 1 using an embedded structure and are made of hard alloy tool steel. Each push tooth 12... The spacing between them is 30mm, corresponding to the width arrangement pitch of the stacked products; the soft scraper 2 is fixedly connected with scraper teeth 22 that correspond one-to-one with the pusher teeth 12. The front end of the scraper teeth 22 is designed with an arc-shaped cutting edge, which facilitates smooth insertion into the gap between the product and the blade, and enhances the pushing stability; the pusher arm pushes the pusher plate 1 to move along the guide rail on the linear stacking and sorting machine. The guide rail adopts a high-precision linear slide rail structure to ensure that the pusher plate runs smoothly without deviation, pushing the products placed on the blades into the compression area of ​​the stacking compressor; during the process of pushing the products, the pusher teeth 12 are arranged in an alternating manner with the blades. The pusher teeth 12 can accurately insert into the gap formed by adjacent blades to achieve the selected pushing of a predetermined number of products, ensuring the accuracy of stacking quantity control and product neatness.

[0039] See Figure 3-4 The push plate 1 has a positioning groove 11 on one side. The positioning groove 11 has a stepped structure and is precision milled to form a complete product with good fitting accuracy. The positioning groove 11 is used to limit the installation of the soft scraper 2 and the pressure plate 3 to prevent them from shifting during the pushing process. The soft scraper 2 and the pressure plate 3 are respectively embedded into different stepped surfaces of the positioning groove 11. The step difference ensures that the soft scraper 2 is exposed to an appropriate extent to achieve flexible scraping and pushing of the product. At the same time, the pressure plate 3 provides rigid support at the back, forming a composite pushing and pressing structure, which effectively improves the reliability of pushing.

[0040] See Figure 3-4The positioning groove 11 has multiple first connecting holes 111 through it. Each first connecting hole 111 is a through hole with a diameter of Φ6mm and an embedded thread structure on the hole wall for installing fixing screws. The soft scraper 2 has a third connecting hole 21 through it, corresponding to the position of the first connecting hole 111. The third connecting hole 21 is designed with a plastic sleeve hole with an outer diameter of Φ6.2mm to prevent the screws from directly squeezing the soft scraper material and causing deformation. The pressure plate 3 has a fourth connecting hole 31 corresponding to the first connecting hole 111. The fourth connecting hole 31 is formed by drilling stainless steel and its diameter is slightly smaller than that of the third connecting hole 21 so that the pressure plate 3 can press the soft scraper 2 when locked. Through the screws of the above three sets of connecting holes, the soft scraper 2 and the pressure plate 3 can be firmly fixed in the positioning groove 11 of the push plate 1, ensuring that the force is uniform and the components do not fall off during the overall operation of the pushing structure.

[0041] See Figure 1-4 The upper side of the push plate 1 has a second connecting hole 13. The second connecting hole 13 is a precision through hole with a diameter of Φ10mm. The hole wall is machined with a groove for anti-loosening and anti-retraction washers. It is used to install the fastening screw connecting the push plate 1 and the push arm. The selected screw is an M10×40 socket head cap screw. It adopts a double structure of anti-vibration washers and anti-loosening nuts to ensure that the push plate 1 and the push arm always maintain a reliable connection during high-frequency reciprocating operation, effectively preventing the push plate from shifting or loosening.

[0042] See Figure 1-2 The soft scraper 2 has a first protrusion 221 and a second protrusion 222 fixedly connected to both sides. Both protrusions are integrally molded structures made of high-strength polyurethane and are subjected to high-frequency hot pressing to improve wear resistance. The first protrusion 221 and the second protrusion 222 are both semi-arc-shaped with an arc height of 5mm, which fits the blade contour design. During the process of pushing the product, the first protrusion 221 and the second protrusion 222 are tightly attached to the blade surface of the stacking and slicing machine. The blade is made of 304 stainless steel with a width of 80mm and a spacing of 30mm. Through this fitting structure, the contact area between the soft scraper 2 and the blade can be significantly increased, thereby improving the stability and uniformity of the product pushing process and avoiding product slippage or jamming.

[0043] Example 2: Interlaced pusher structure achieves precise quantitative pushing

[0044] In this embodiment, six push teeth 12 are evenly spaced along the length of the bottom of the push plate 1. The push teeth 12 are made of YG8 tungsten steel, each with a width of 10mm and a length of 30mm, and are embedded into the push plate. The product is placed on parallel blades made of 304 stainless steel, 2mm thick, with a blade spacing of 30mm. When the push arm pushes the push plate 1 forward, the six push teeth 12 precisely insert into the six sets of blade gaps, thereby achieving the simultaneous ejection of six products at a time, ensuring a consistent stacking quantity. This structural design effectively avoids the problem of inconsistent ejection quantities in traditional flat-push structures.

[0045] In the comparative case, a regular flat push plate was used without any push tooth structure. The front edge of the push plate was flat, which made it easy to push out excess products or miss some products when pushing, resulting in inconsistent stacking quantities, especially in small-sized products such as 60mm×60mm plastic boxes.

[0046] Example 3: Composite soft scraper structure achieves flexible and stable pushing

[0047] In this embodiment, the soft scraper 2 is made of polyurethane material with a Shore hardness of 65A, with a thickness of 8mm and a height of 60mm, and is located in the positioning groove 11 on the right side of the push plate 1; the pressure plate 3 is made of 304 stainless steel plate with a thickness of 3mm and a length consistent with the soft scraper. During the pushing process, the soft scraper flexibly contacts the product surface, while the pressure plate provides rigid support, resulting in uniform force distribution and no slippage during the overall pushing process. This structure is particularly suitable for the stable pushing of products with smooth or easily scratched surfaces (such as aluminum profiles or mirrored packaging boxes).

[0048] In the comparative case, a rigid plastic push plate was used to directly contact the product. During the glass bottle pushing process, uneven force caused the bottle to slide and some parts to be bumped and broken, resulting in a product damage rate of more than 15%.

[0049] Example 4: Stepped positioning groove and screw limiting improve structural stability

[0050] In this embodiment, the push plate 1 has a stepped positioning groove 11 with a depth of 10mm and a width of 40mm on its right side. Four first connecting holes 111 with M6 threads are provided in the groove, each spaced 50mm apart. The soft scraper 2 has a protective sleeve hole 21, and the pressure plate 3 has a corresponding drill hole 31, both Φ6.2mm. During installation, M6×25 stainless steel socket head cap screws and spring washers are used to securely connect the three components, ensuring that the scraper does not loosen or misalign after 100,000 continuous cycles.

[0051] In the comparative case, the scraper structure was bonded with ordinary glue. After repeated pushing, the soft scraper showed signs of edge lifting or glue detachment, resulting in a significant decrease in scraper stability and affecting stacking consistency.

[0052] Example 5: Blade-fitting protrusion structure improves push-fit degree

[0053] In this embodiment, the soft scraper 2 integrates a first protrusion 221 and a second protrusion 222 on both sides, respectively. Both are made of the same polyurethane material as the scraper and are integrally molded. The protrusions are 6mm wide and 5mm high, forming a semi-circular shape, which allows them to fit closely with the curved surface of the blade, which is 80mm wide and 30mm apart. During the pushing process, the protrusions slide along the blade, increasing the contact area while stabilizing the product position and preventing displacement during the pushing process.

[0054] In the comparative case, ordinary scrapers without raised structures often cause products to shift or tip over due to insufficient contact surface when pushing oval-shaped bottles, affecting the neatness of stacking and resulting in a pushing error rate of over 10%.

[0055] Example 6: High-strength connecting holes ensure reliable fastening between the push plate and the push arm.

[0056] In this embodiment, the upper end of the push plate 1 is provided with a second connecting hole 13 with a diameter of Φ10mm. A standard DIN6798 type anti-loosening washer is installed in the hole, and the push arm is connected by M10×40 high-strength carbon steel bolts. The bolts are tightened to the standard value of 45Nm with a six-point torque wrench. After connection, it can withstand a maximum tensile force of 600N, which meets the force requirements of the stacker crane during high-frequency operation.

[0057] In the comparative case, using ordinary M8 screws without anti-loosening washers to fix the push plate resulted in loose connections and even screws falling off after long-term operation, causing the push plate to shift position and malfunction, increasing the equipment failure rate.

[0058] The working principle of this utility model is as follows:

[0059] In use, the linear stacker chip sorter transports the products placed on the blades to one side of the stacker compressor. Then, the pusher arm pushes the pusher plate 1 toward the stacker compressor. During the movement of the pusher plate 1, the pusher teeth 12 engage with the gaps between adjacent blades and move along the gaps.

[0060] The number of pusher teeth 12 corresponds to the number of products to be pushed out, thus ensuring that the number of products pushed out each time is specific;

[0061] As the pusher tooth 12 moves on the blade, the first protrusion 221 and the second protrusion 222 on the scraper tooth 22 fit into the blade, which increases the contact area with the product and thus allows the product to be pushed out more reliably.

[0062] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A pusher plate for a stacker, characterised in that: The push plate (1) is provided with a soft scraper (2) and a pressing plate (3) on one side thereof; The bottom of the push plate (1) is provided with push teeth (12) at equal intervals along the length direction thereof; The soft scraper (2) is fixedly connected with scraper teeth (22) corresponding to the push teeth (12); The push arm pushes the push plate (1) to move on the linear stacking tablet machine, and pushes the products placed on the blades to the stacking compressor; The push teeth (12) are staggered with the blades during the process of pushing the products.

2. The pusher plate according to claim 1, characterized in that: The push plate (1) is provided with a positioning groove (11) on one side thereof, and the positioning groove (11) is in a stepped shape; The soft scraper (2) and the pressing plate (3) are embedded into the positioning groove (11) respectively.

3. A pusher plate for a palletizer as set forth in claim 2, characterized in that: The positioning groove (11) is provided with a first connecting hole (111) therethrough; The soft scraper (2) is provided with a third connecting hole (21) corresponding to the first connecting hole (111) therethrough; The pressing plate (3) is provided with a fourth connecting hole (31) corresponding to the first connecting hole (111).

4. The pusher plate according to claim 1, characterized in that: The upper end side of the push plate (1) is provided with a second connecting hole (13) therethrough, and the second connecting hole (13) is used for installing the screw connecting the push plate (1) and the push arm.

5. The pusher plate according to claim 1, characterized in that: The soft scraper (2) is fixedly connected with a first protrusion (221) and a second protrusion (222) on both sides thereof respectively.

6. A pusher plate for a palletizer as set forth in claim 5, characterized in that: During the process of pushing the products, the first protrusion (221) and the second protrusion (222) are attached to the blades.

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