A punching tool for sampling tinplate strip

Abstract

The utility model relates to tinned sheet production technical field especially relates to a kind of punching tool for tinned sheet strip sampling, including horizontal linear guide pair, load frame, first lifting push rod, second lifting push rod, combined punching head, mounting bracket, charge and discharge pump, suction cup, first pipeline, second pipeline and compression spring, the slider downside of horizontal linear guide pair is fixed with load frame, load frame is installed with first and second lifting push rod, combined punching head is installed in the movable end of first lifting push rod, the movable end of second lifting push rod is installed with suction cup and charge and discharge pump via mounting bracket, charge and discharge pump is communicated with suction cup, combined punching head by first / second pipeline. The utility model through the combined punching head and the synergistic effect of suction cup, only need to press from strip upside one-way, can complete punching. Annular cutting edge forms closed loop shearing force in the moment of stamping, without bottom support, simplify equipment structure and adapt to continuous production line space limit.

Description

Technical Field

[0001] This utility model relates to the field of tin-plated sheet production technology, and in particular to a punching tool for sampling tin-plated sheet strips. Background Technology

[0002] The core function of the punching fixture for sampling tin-plated sheet strips is to provide a standardized sample preparation method for quality inspection. It instantly separates the strip by punching, cutting out samples with complete cross-sectional features. This ensures that the sample edges are flat and retain the original tin plating structure (such as the composite state of the steel substrate layer, tin-iron alloy layer, oxide film, and oil film), thus accurately reflecting the material's performance in terms of corrosion resistance, mechanical strength, and surface properties. This punching fixture significantly improves sampling efficiency and consistency, avoids edge deformation or plating damage caused by manual cutting, and ensures the accuracy of subsequent testing data (such as surface ash analysis and tin adhesion testing).

[0003] The existing punching fixture for sampling tin-plated sheet strip has shortcomings. During punching, a pressure-bearing component needs to be placed under the strip to cooperate with the punching component, and flipping and other operations are also required to transfer the cut material, making the overall sampling operation cumbersome. Therefore, it is necessary to optimize and improve the existing punching fixture for sampling tin-plated sheet strip. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned problems in the traditional technology and provide a punching tool for sampling tin-plated sheet strips. The tin-plated sheet can be used to prepare anti-counterfeiting patterns on the finished product, thus expanding the application of tin-plated sheets.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: A punching fixture for sampling tin-plated sheet strip includes a horizontal linear guide pair, a frame, a first lifting push rod, a second lifting push rod, a combined punching head, a mounting bracket, a charging / discharging pump, a suction cup, a first pipeline, a second pipeline, and a compression spring. The frame is fixed to the lower side of the slider of the horizontal linear guide pair. The first and second lifting push rods are mounted on the frame. The combined punching head is mounted on the movable end of the first lifting push rod, and the mounting bracket is fixed to the movable end of the second lifting push rod. The suction cup and the charging / discharging pump are mounted on the mounting bracket. The suction cup and the compression spring are sleeved on the outside of the combined punching head. The charging / discharging pump is connected to the suction cup through the first pipeline, and to the combined punching head through the second pipeline.

[0006] Furthermore, in the above-mentioned punching fixture for sampling tin-plated sheet strip, the combined punching head is composed of a first component and a second component; The first component includes an upper block and an upper protruding post disposed on its inner side. The lower end of the upper protruding post is provided with an internal thread groove, and the upper wall of the internal thread groove is provided with an upper axial groove. A radial groove is provided in the upper block. The inner end of the radial groove is connected to the upper axial groove, and the outer end of the radial groove is connected to the second pipeline. The second component includes a lower block and a lower protruding post located inside it. The upper end of the lower protruding post is provided with an external thread post that mates with the internal thread groove. The bottom end of the lower block is provided with an annular cutting edge and a sample adsorption groove located therein. The external thread post is provided with a lower axial groove for connecting the upper axial groove and the sample adsorption groove.

[0007] Furthermore, in the aforementioned punching fixture for sampling tin-plated sheet strip, the outer diameters of the upper and lower protrusions are equal, and the outer diameter of the upper / lower block is greater than the outer diameter of the upper / lower protrusion.

[0008] Furthermore, in the aforementioned punching fixture for sampling tin-plated sheet strip, the suction cup includes a suction cup base. A stepped groove, narrower at the top and wider at the bottom, is provided at the center of the suction cup base. The stepped groove is composed of an upper groove that matches the outer diameter of the lower protrusion and a lower groove that matches the lower block. An annular box is embedded and installed around the periphery of the suction cup base. An annular cavity is provided inside the annular box. An adsorption pad is installed on the lower side of the suction cup base. The adsorption pad and the lower annular plate of the annular box are provided with several adsorption holes along the circumference. A connecting pipe is provided on the upper side of the suction cup base for connecting the first pipeline and the annular cavity in the annular box.

[0009] Furthermore, in the aforementioned punching fixture for sampling tin-plated sheet strip, the compression spring is sleeved on the outside of the upper and lower protrusions, and the two ends of the compression spring abut against the lower end face of the upper block and the upper end face of the suction cup seat, respectively.

[0010] Furthermore, the punching fixture for sampling tin-plated sheet strips also includes a controller, which is connected to a horizontal linear guide pair, a first lifting push rod, a second lifting push rod, and an air pump.

[0011] The beneficial effects of this utility model are: 1. Eliminates the lower pressure-bearing components, enabling single-sided operation. Traditional punching fixtures require a pressure platform (such as a die) under the strip material to work with the punch to complete the cutting. However, this invention utilizes the combined action of a combined punching head and a suction cup to complete the punching by applying pressure from the top of the strip material in one direction. The annular cutting edge forms a closed-loop shearing force at the moment of punching, eliminating the need for bottom support, simplifying the equipment structure and adapting to the space constraints of continuous production lines.

[0012] 2. Integrated adsorption and transfer, avoiding manual flipping. The suction cup creates negative pressure in the annular cavity through an air pump, adsorbing and fixing the edge of the material before punching to prevent displacement. At the same time as punching, the air passage (second pipeline → radial groove → upper / lower axial groove) inside the combined punching head generates negative pressure in the sample adsorption groove, automatically adsorbing the separated sample. The two work together to achieve "fixing-punching-picking" integration, eliminating the steps of flipping or clamping the sample in traditional tooling.

[0013] 3. Protect the integrity of the coating and ensure the accuracy of testing. The instantaneous punching of the annular cutting edge reduces the elongation and deformation of the tin-plated layer (steel substrate layer, tin-iron alloy layer, etc.) and preserves the original cross-sectional state; 4. Modular design improves maintenance efficiency The modular punching head uses a threaded connection, allowing for quick replacement of the second component to accommodate different sample sizes and reduce the cost of replacing worn parts.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of part of this utility model; Figure 3 This is an external schematic diagram of the combined punching head in this utility model; Figure 4 This is an internal schematic diagram of the combined punching head in this utility model; Figure 5 This is a schematic diagram of the suction cup structure in this utility model; In the attached diagram, the components represented by each number are as follows: 1-Horizontal linear guide pair, 2-Carrier frame, 3-First lifting push rod, 4-Second lifting push rod, 5-Combined punching head, 51-First component, 511-Upper block, 512-Upper protrusion, 513-Internal thread groove, 514-Upper axial groove, 515-Radial groove, 52-Second component, 521-Lower block, 522-Lower protrusion, 523-External thread post, 524-Annular cutting blade, 525-Sample adsorption groove, 526-Lower axial groove, 6-Mounting bracket, 7-Air pump, 8-Suction cup, 801-Suction cup seat, 802-Upper groove, 803-Lower groove, 804-Annular box, 805-Annular cavity, 806-Adsorption pad, 807-Adsorption hole, 808-Connecting pipe, 9-First pipeline, 10-Second pipeline, 11-Compression spring, 12-Tin-plated sheet strip. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-5 As shown, this embodiment provides a punching fixture for sampling tin-plated sheet strips, including a horizontal linear guide 1, a frame 2, a first lifting push rod 3, a second lifting push rod 4, a combined punching head 5, a mounting bracket 6, an air pump 7, a suction cup 8, a first pipe 9, a second pipe 10, and a compression spring 11. The frame 2 is fixed to the lower side of the slider of the horizontal linear guide 1. The first lifting push rod 3 and the second lifting push rod 4 are mounted on the frame 2. The combined punching head 5 is mounted on the movable end of the first lifting push rod 3, and the mounting bracket 6 is fixed to the movable end of the second lifting push rod 4. The suction cup 8 and the air pump 7 are mounted on the mounting bracket 6. The suction cup 8 and the compression spring 11 are sleeved on the outside of the combined punching head 5. The air pump 7 is connected to the suction cup 8 through the first pipe 9, and to the combined punching head 5 through the second pipe 10.

[0019] In this embodiment, the combined punching head 5 is composed of a first component 51 and a second component 52; The first component 51 includes an upper block 511 and an upper protruding post 512 disposed on its inner side. The lower end of the upper protruding post 512 has an internal threaded groove 513, and the upper wall of the internal threaded groove 513 has an upper axial groove 514. A radial groove 515 is formed in the upper block 511. The inner end of the radial groove 515 is connected to the upper axial groove 514, and the outer end of the radial groove 515 is connected to the second pipeline 10. The second component 52 includes a lower block portion 521 and a lower protrusion 522 disposed on its inner side. The upper end of the lower protrusion 522 is provided with an external threaded post 523 that mates with the internal threaded groove 513. The bottom end of the lower block portion 521 is provided with an annular cutting edge 524 and a sample adsorption groove 525 located therein. The external threaded post 523 is provided with a lower axial groove 526 for connecting the upper axial groove 514 and the sample adsorption groove 525.

[0020] In this embodiment, the outer diameters of the upper protrusion 512 and the lower protrusion 522 are equal, and the outer diameter of the upper block portion 511 / lower block portion 521 is greater than the outer diameter of the upper protrusion 512 / lower protrusion 522.

[0021] In this embodiment, the suction cup 8 includes a suction cup base 801. A stepped groove, narrower at the top and wider at the bottom, is formed at the center of the suction cup base 801. The stepped groove consists of an upper groove 802 that mates with the outer diameter of the lower protrusion 522 and a lower groove 803 that mates with the lower block 521. An annular box 804 is embedded in the suction cup base 801 at the periphery of the stepped groove. An annular cavity 805 is provided inside the annular box 804. An adsorption pad 806 is installed on the lower side of the suction cup base 801. The adsorption pad 806 and the lower annular plate of the annular box 804 are provided with a plurality of adsorption holes 807 along the circumference. A connecting pipe 808 is provided on the upper side of the suction cup base 801 to connect the first pipe 9 and the annular cavity 805 in the annular box 804.

[0022] In this embodiment, the compression spring 11 is sleeved on the outside of the upper protrusion 512 and the lower protrusion 522, and the two ends of the compression spring 11 abut against the lower end surface of the upper block 511 and the upper end surface of the suction cup seat 801, respectively.

[0023] In this embodiment, a controller is also included, which is connected to the horizontal linear guide rail pair 1, the first lifting push rod 3, the second lifting push rod 4 and the air pump 7.

[0024] The sampling process in this embodiment is as follows: Step S1: Positioning and fixing the strip Horizontal positioning: The controller starts the horizontal linear guide pair 1, driving the carrier frame 2 to move above the material to be sampled; Adsorption and fixation: The second lifting push rod 4 pushes down the mounting bracket 6, so that the adsorption pad 806 of the suction cup 8 contacts the surface of the tin-plated sheet material 12 → the air pump 7 draws air from the annular cavity 805 through the first pipeline 9, and the negative pressure fixes the edge of the tin-plated sheet material 12 through the adsorption hole 807.

[0025] Step S2: Simultaneous adsorption of punching and sample Punching head down: The first lifting push rod 3 pushes the combined punching head 5 downward, and the compression spring 11 contracts to keep the suction cup 8 and the punching head moving synchronously. Shearing and separation: The annular cutting blade 524 contacts the tin-plated sheet strip 12 and completes closed-loop punching to form a standard sample; Negative pressure pickup: The air pump 7 supplies air to the sample adsorption tank 525 through the second pipeline 10 and switches to negative pressure mode. The airflow path is: second pipeline 10 → radial groove 515 → upper axial groove 514 → lower axial groove 526 → sample adsorption tank 525, and the sample is adsorbed in the tank.

[0026] Step 3: Sample Transfer and Reset Overall improvement: The first lifting push rod 3 retracts, the combined punching head 5 moves upward with the adsorbed sample, and at the same time the suction cup 8 releases the negative pressure and releases the tin-plated sheet material 12; Transfer and release: The horizontal linear guide rail 1 is moved to the collection position → the air pump 7 fills the sample adsorption tank 525 with positive pressure gas, and the sample falls off to complete the sampling.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A punching fixture for sampling tin-plated sheet strip, characterized in that, The device includes a horizontal linear guide rail assembly, a frame, a first lifting push rod, a second lifting push rod, a combined punching head, a mounting bracket, an air pump, a suction cup, a first pipeline, a second pipeline, and a compression spring. The frame is fixed to the lower side of the slider of the horizontal linear guide rail assembly. The first and second lifting push rods are mounted on the frame. The combined punching head is mounted on the movable end of the first lifting push rod, and the mounting bracket is fixed to the movable end of the second lifting push rod. The suction cup and the air pump are mounted on the mounting bracket. The suction cup and the compression spring are sleeved on the outside of the combined punching head. The air pump is connected to the suction cup through the first pipeline, and the air pump is connected to the combined punching head through the second pipeline.

2. The punching fixture for sampling tin-plated sheet strips according to claim 1, characterized in that, The combined punching head is composed of a first component and a second component; The first component includes an upper block and an upper protruding post disposed on its inner side. The lower end of the upper protruding post is provided with an internal thread groove, and the upper wall of the internal thread groove is provided with an upper axial groove. A radial groove is provided in the upper block. The inner end of the radial groove is connected to the upper axial groove, and the outer end of the radial groove is connected to the second pipeline. The second component includes a lower block and a lower protruding post located inside it. The upper end of the lower protruding post is provided with an external thread post that mates with the internal thread groove. The bottom end of the lower block is provided with an annular cutting edge and a sample adsorption groove located therein. The external thread post is provided with a lower axial groove for connecting the upper axial groove and the sample adsorption groove.

3. The punching fixture for sampling tin-plated sheet strips according to claim 2, characterized in that, The outer diameters of the upper and lower protrusions are equal, and the outer diameter of the upper / lower block is greater than the outer diameter of the upper / lower protrusion.

4. The punching fixture for sampling tin-plated sheet strips according to claim 3, characterized in that, The suction cup includes a suction cup base. A stepped groove, narrower at the top and wider at the bottom, is formed at the center of the suction cup base. The stepped groove consists of an upper groove that matches the outer diameter of the lower protrusion and a lower groove that matches the lower block. An annular box is embedded in the suction cup base at the periphery of the stepped groove. An annular cavity is provided inside the annular box. An adsorption pad is installed on the lower side of the suction cup base. The adsorption pad and the lower annular plate of the annular box are provided with a number of adsorption holes along the circumference. A connecting pipe is provided on the upper side of the suction cup base for connecting the first pipeline and the annular cavity in the annular box.

5. The punching fixture for sampling tin-plated sheet strip according to claim 4, characterized in that, The compression spring is sleeved on the outside of the upper and lower protrusions, and the two ends of the compression spring abut against the lower end face of the upper block and the upper end face of the suction cup seat, respectively.

6. The punching fixture for sampling tin-plated sheet strip according to claim 1, characterized in that, It also includes a controller, which is connected to the horizontal linear guide pair, the first lifting push rod, the second lifting push rod and the air pump.

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