A cardboard bursting strength testing device

Abstract

This utility model discloses a paperboard bursting strength testing device, comprising: a base; a stamping module disposed on the base, the stamping module including a drive assembly and a stamping head, the drive assembly connecting to and driving the stamping head to move vertically; and a fixture module disposed on the base and located below the stamping module, the fixture module including a fixture block, an air suction connector, and an air blowing connector. The end face of the fixture block is used to support the paperboard, the air suction connector can be connected to an air suction pipe for adsorbing and fixing the paperboard, the middle of the fixture block is provided with a pressure groove matching the shape of the stamping head so that the paperboard sinks after being stamped by the stamping head, and the air blowing connector can be connected to an air outlet pipe for blowing air into the pressure groove to blow out the paperboard and / or paper scraps. By applying precise pressure through the stamping module, the fixture module can adsorb and fix the paperboard before stamping and blow air to clean the pressure groove residue after stamping, ensuring the repeatability of subsequent tests, thereby improving the test accuracy, efficiency, and standardization.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a paperboard bursting strength testing device. Background Technology

[0002] In the production and use of paperboard, bursting strength is a crucial physical performance indicator for measuring paperboard quality. Bursting strength refers to the maximum uniformly increasing pressure that paperboard can withstand per unit area. It is directly related to the paperboard's resistance to breakage in practical applications. For many industries that rely on paperboard materials, such as packaging and printing, accurately assessing the bursting strength of paperboard is a key step in ensuring product quality and performance.

[0003] Traditional paperboard bursting strength testing relies primarily on manual or simple mechanical devices. These methods typically involve applying vertical pressure to paperboard placed on a specific support surface using a punch head until the paperboard breaks, and then recording the maximum pressure value as the test result. However, because the punch head exerts significant impact force on the paperboard during the punching process, and traditional devices lack effective fixing mechanisms, the paperboard is prone to shifting or loosening. This instability causes deviations in the actual location and manner of pressure application from standard testing requirements, resulting in test results that do not accurately reflect the paperboard's true bursting strength, severely impacting the reliability and accuracy of the test results. Secondly, after the punch head breaks the paperboard, it produces paperboard fragments and paper scraps. These residues can easily become trapped in the pressure grooves of the tooling module. If not cleaned promptly, these residues can affect newly placed paperboard during subsequent tests, such as interfering with proper placement and support, and potentially leading to inaccurate test results. Furthermore, the long-term accumulation of residues can negatively impact the performance and lifespan of the device, affecting the continuity and stability of the testing process. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a paperboard bursting strength testing device, which applies precise pressure through a stamping module. The tooling module can adsorb and fix the paperboard before stamping and blow air to clean the pressure groove residue after stamping, ensuring the repeatability of subsequent tests, thereby improving the test accuracy, efficiency and standardization.

[0005] A paperboard bursting strength testing device according to an embodiment of the present invention includes: Base; A stamping module is disposed on the machine base. The stamping module includes a drive assembly and a stamping head. The drive assembly is connected to and drives the stamping head to move in the vertical direction. A tooling module is disposed on the machine base and located below the stamping module. The tooling module includes a tooling block, an air suction connector, and an air blowing connector. The end face of the tooling block is used to support the cardboard. The air suction connector can be connected to the air suction pipe and is used to adsorb and fix the cardboard. The middle part of the tooling block is provided with a pressure groove that matches the shape of the stamping head so that the cardboard sinks after being stamped by the stamping head. The air blowing connector can be connected to the air outlet pipe and is used to blow air into the pressure groove to blow out the cardboard and / or paper scraps.

[0006] According to an embodiment of the present invention, a paperboard bursting strength testing device has at least the following beneficial effects: During the test, the driving component drives the punching head to move vertically, ensuring that the pressure applied to the paperboard is vertical and stable, avoiding test errors caused by pressure direction deviation, and laying the foundation for accurate measurement of paperboard bursting strength; furthermore, the tooling module is located below the punching module, and the end face of its tooling block is used to support the paperboard, providing a stable placement platform for the paperboard. The suction connector can connect to the suction pipe and adsorb and fix the paperboard. This design effectively prevents the paperboard from shifting or loosening due to impact force during the punching process, further... The tooling block has a groove in the middle that matches the shape of the punch head. When the punch head punches the cardboard, the groove allows the cardboard to sink naturally after it breaks, preventing the broken cardboard fragments from flying everywhere and also preventing fragments from getting stuck in the device and affecting subsequent tests. In addition, after punching, the air blowing connector can be connected to the air outlet pipe to blow air into the groove. When the cardboard is punched and broken, the air blowing can blow out the cardboard and / or paper scraps in the groove in time, ensuring the cleanliness of the groove and providing good initial conditions for the next test. This avoids the impact of residues on subsequent test results, extends the service life of the device, and also improves the efficiency of the testing work.

[0007] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided, wherein the tooling block is disc-shaped.

[0008] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided, wherein the air suction connector and the air blowing connector are arranged at intervals in the circumferential direction of the tooling block.

[0009] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided on the peripheral surface of the tooling block. The air blowing groove extends radially and communicates with the pressure groove. The air blowing connector is installed at the end of the air blowing groove away from the center of the tooling block.

[0010] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided with an air suction groove on the upper surface of the tooling block, and the air suction connector is connected to the air suction groove and used to extract gas from the air suction groove.

[0011] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided, wherein the air suction groove is arranged around the pressure groove.

[0012] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided, wherein the air suction groove is square and is arranged longitudinally and transversely through the end face of the tooling block.

[0013] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided with a first ventilation section extending axially along the tooling block on the bottom wall of the suction groove, and a second ventilation section extending radially along the tooling block on the surface of the tooling block. One end of the second ventilation section is connected to the first ventilation section, and the suction connector is installed at the other end of the second ventilation section.

[0014] According to some embodiments of the present invention, a paperboard bursting strength testing device is provided with a central control screen on the machine base, which integrates the control of the stamping module and the tooling module.

[0015] According to some embodiments of the present invention, a paperboard bursting strength testing device includes a drive assembly comprising a drive cylinder, and a pressure gauge is provided on the base for displaying the output pressure of the drive cylinder.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a paperboard bursting strength testing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the application of a paperboard bursting strength testing device according to an embodiment of this utility model; Figure 3 This is an exploded view of the tooling module of a paperboard bursting strength testing device according to an embodiment of the present invention.

[0018] Explanation of icon numbers: Base unit 100; Central control screen 110; Pressure gauge 120; 200 stamping module; 210 stamping head; Tooling module 300; tooling block 310; pressure groove 3101; air blowing groove 3102; air suction groove 3103; first ventilation section 3104; second ventilation section 3105; air suction connector 320; air blowing connector 330; Cardboard 400. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] In the production and use of paperboard, bursting strength is a crucial physical performance indicator for measuring paperboard quality. Bursting strength refers to the maximum uniformly increasing pressure that paperboard can withstand per unit area. It is directly related to the paperboard's resistance to breakage in practical applications. For many industries that rely on paperboard materials, such as packaging and printing, accurately assessing the bursting strength of paperboard is a key step in ensuring product quality and performance.

[0025] Traditional paperboard bursting strength testing relies primarily on manual or simple mechanical devices. These methods typically involve applying vertical pressure to paperboard placed on a specific support surface using a punch head until the paperboard breaks, and then recording the maximum pressure value as the test result. However, because the punch head exerts significant impact force on the paperboard during the punching process, and traditional devices lack effective fixing mechanisms, the paperboard is prone to shifting or loosening. This instability causes deviations in the actual location and manner of pressure application from standard testing requirements, resulting in test results that do not accurately reflect the paperboard's true bursting strength, severely impacting the reliability and accuracy of the test results. Secondly, after the punch head breaks the paperboard, it produces paperboard fragments and paper scraps. These residues can easily become trapped in the pressure grooves of the tooling module. If not cleaned promptly, these residues can affect newly placed paperboard during subsequent tests, such as interfering with proper placement and support, and potentially leading to inaccurate test results. Furthermore, the long-term accumulation of residues can negatively impact the performance and lifespan of the device, affecting the continuity and stability of the testing process.

[0026] Therefore, such as Figures 1 to 3As shown, this utility model proposes a paperboard bursting strength testing device, which includes a base 100, a stamping module 200 disposed on the base 100, and a tooling module 300 disposed on the base 100 and located below the stamping module 200. The stamping module 200 includes a drive assembly and a stamping head 210. The drive assembly is connected to and drives the stamping head 210 to move in the vertical direction. The tooling module 300 includes a tooling block 310, an air suction connector 320, and an air blowing connector 330. Specifically, the end face of the tooling block 310 is used to support the cardboard 400, the suction connector 320 can be connected to the suction pipe and used to adsorb and fix the cardboard 400, the middle of the tooling block 310 is provided with a pressure groove 3101 that matches the shape of the punch head 210 so that the cardboard 400 sinks after being punched by the punch head 210, and the blowing connector 330 can be connected to the air outlet pipe and used to blow air into the pressure groove 3101 to blow out the cardboard 400 and / or paper scraps. It should be noted that during the test, the drive assembly drives the punch head 210 to move vertically, ensuring that the pressure applied to the cardboard 400 is vertical and stable, avoiding test errors caused by pressure direction deviation, and laying the foundation for accurate measurement of the bursting strength of the cardboard 400. Furthermore, the tooling module 300 is located below the punching module 200, and the end face of its tooling block 310 is used to support the cardboard 400, providing a stable placement platform for it. The suction connector 320 can connect to the suction pipe and adsorb and fix the cardboard 400. This design effectively prevents the cardboard 400 from shifting or loosening due to impact during the punching process. Further, the middle of the tooling block 310 is positioned opposite the outer edge of the punch head 210. The shape-matched groove 3101 allows the cardboard 400 to sink naturally after being punched and broken when the punch head 210 punches it, preventing fragments of the broken cardboard 400 from flying everywhere and also preventing fragments from getting stuck in the device and affecting subsequent tests. In addition, after punching, the air blowing connector 330 can be connected to the air outlet pipe and blow air into the groove 3101. When the cardboard 400 is punched and broken, the air blowing can promptly blow out the cardboard 400 and / or paper scraps in the groove 3101, ensuring the cleanliness of the groove 3101, providing good initial conditions for the next test, avoiding the influence of residues on subsequent test results, extending the service life of the device, and improving the efficiency of the testing work.

[0027] Reference Figure 1In some embodiments of this utility model, the tooling block 310 is disc-shaped, possessing high symmetry and convenient for processing and manufacturing. Correspondingly, the pressure groove 3101 is cylindrical, with uniform mechanical properties in all directions along its circumference. Specifically, the suction connector 320 and the blowing connector 330 are arranged at intervals along the circumference of the tooling block 310. Through the reasonable spatial arrangement of functional components, the synergistic efficiency of fixing the cardboard 400 and cleaning residues is significantly improved. It can be understood that the circumferentially spaced arrangement ensures that the suction connector 320 and the blowing connector 330 are alternately distributed along the circumference of the disc-shaped tooling block 310, avoiding mutual interference between the two. Further, referring to... Figure 3 The tooling block 310 has an air blowing groove 3102 on its circumferential surface. The air blowing groove 3102 extends radially and communicates with the pressure groove 3101. The air blowing connector 330 is installed at the end of the air blowing groove 3102 away from the center of the tooling block 310. It is easy to understand that the radially extending air blowing groove 3102 extends from the circumferential surface of the tooling block 310 to the pressure groove 3101, forming a channel that directly connects the external air source and the inside of the pressure groove 3101. When the air blowing connector 330 is connected to the air outlet pipe and compressed air is introduced into the air blowing groove 3102, the airflow is sprayed radially at high speed into the inside of the pressure groove 3101, which can accurately act on the paper scraps or fragments attached to the bottom and side walls of the pressure groove 3101, realizing efficient and directional cleaning of the residue in the pressure groove 3101.

[0028] Reference Figure 1 In some embodiments of this utility model, the upper surface of the tooling block 310 is provided with a suction groove 3103. The suction connector 320 is connected to the suction groove 3103 and is used to extract gas from the suction groove 3103. Through the arrangement of the planar adsorption structure, the uniformity and stability of the cardboard 400 are significantly improved. In application, when the suction connector 320 is connected to the suction pipe and extracts gas from the suction groove 3103, a negative pressure zone can be formed within the area covered by the suction groove 3103, thereby generating a uniform adsorption force on the cardboard 400 placed on the end face of the tooling block 310. It should be noted that compared with point adsorption designs such as a single suction hole, the planar suction groove 3103 can cover a larger contact area of ​​the cardboard 400, so that the cardboard 400 is uniformly and stably adsorbed over a large area, effectively preventing the cardboard 400 from locally warping or sliding due to impact force during the stamping process. Further, referring to... Figure 3In some embodiments of this utility model, the suction groove 3103 is arranged around the pressure groove 3101, further enhancing the fixing effect of the key area of ​​the cardboard 400. It can be understood that the pressure groove 3101 is the area directly acted upon by the punching head 210, and is also the core position where the cardboard 400 is most prone to displacement or deformation. The arrangement of the suction groove 3103 around the pressure groove 3101 means that the adsorption force is concentrated on the periphery and central area of ​​the cardboard 400 to be punched, which can more accurately resist the radial impact force generated during punching. In application, when the punching head 210 presses down, the negative pressure field formed by the suction groove 3103 around the pressure groove 3101 can firmly fix the cardboard 400 in the adjacent area relative to the edge of the pressure groove 3101, preventing the cardboard 400 from sliding outward or bulging locally due to sudden pressure, ensuring that the contact surface between the punching head 210 and the cardboard 400 always remains perpendicular and tight, thereby ensuring that the pressure transmission path of the bursting strength test meets the standard requirements. Optionally, in some embodiments of this utility model, the suction grooves 3103 are square and arranged longitudinally and transversely on the end face of the tooling block 310, thereby maximizing and uniformizing the adsorption force of the cardboard 400. On the one hand, the square suction grooves 3103 have regular right-angled boundaries, which facilitates processing and manufacturing and can be well adapted to the upper surface of the disc-shaped tooling block 310; on the other hand, the longitudinal and transverse arrangement forms a continuous grid-like negative pressure channel, so that the entire area covered by the suction grooves 3103 can be connected by airflow to form a uniform negative pressure environment. This design can not only enhance the local adsorption force through the intersection of multiple suction grooves 3103, but also balance the pressure difference of each area through the through airflow path, avoiding fixation failure caused by blockage of a single suction groove 3103 or uneven airflow.

[0029] Refer to Figure 3 In some embodiments of this utility model, the bottom wall of the suction groove 3103 is provided with a first ventilation section 3104 extending axially along the tooling block 310, and the surface of the tooling block 310 is provided with a second ventilation section 3105 extending radially along the tooling block 310. One end of the second ventilation section 3105 is connected to the first ventilation section 3104, and the suction connector 320 is installed at the other end of the second ventilation section 3105, thus optimizing the path for realizing the suction function. The first ventilation section 3104 extends axially along the tooling block 310, that is, perpendicular to the end face of the tooling block 310, and directly connects to the bottom wall of the suction groove 3103, which can quickly guide the gas in the suction groove 3103 to the interior of the tooling block 310. In conjunction with the second ventilation section 3105 extending radially and connecting the first ventilation section 3104 to the suction connector 320, a complete airflow circuit from the suction groove 3103 to the external air source is formed.

[0030] Refer to Figure 1In some embodiments of this utility model, the base 100 is equipped with a central control screen 110, which integrates the control of the stamping module 200 and the tooling module 300. This integration of an intelligent control system significantly improves the ease of operation and testing standardization of the device. The central control screen 110, as the core interface for human-machine interaction, can uniformly control the drive components of the stamping module 200. For example, it can adjust the pressure, speed, and stroke of the stamping head 210, and control the suction / blowing function of the tooling module 300, such as controlling the adsorption intensity of the suction connector 320 and the blowing duration and frequency of the blowing connector 330. Operators do not need to adjust multiple independent components separately; they can complete parameter settings and function switching simply through the visual interface of the central control screen 110. Furthermore, in some applications, integrated control can also automate the testing process, such as preset stamping pressure and automatic start / stop of suction / blowing, thereby reducing human intervention and operational errors. Optionally, the drive assembly includes a drive cylinder, and the base 100 is equipped with a pressure gauge 120, which displays the output pressure of the drive cylinder. For example, the drive cylinder is a pneumatic cylinder or a hydraulic cylinder. The operator can visually monitor the actual pressure changes during the stamping process by observing the pressure gauge 120, ensuring that the pressure application process meets the preset standards. Furthermore, when the pressure gauge 120 displays abnormalities, such as excessive pressure fluctuations or failure to reach the target value, the operator can promptly troubleshoot problems in the hydraulic or pneumatic systems of the drive cylinder, avoiding test errors caused by pressure control failure.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A paperboard burst resistance testing apparatus characterized by, include: Base; A stamping module is disposed on the machine base. The stamping module includes a drive assembly and a stamping head. The drive assembly is connected to and drives the stamping head to move in the vertical direction. A tooling module is disposed on the machine base and located below the stamping module. The tooling module includes a tooling block, an air suction connector, and an air blowing connector. The end face of the tooling block is used to support the cardboard. The air suction connector can be connected to the air suction pipe and is used to adsorb and fix the cardboard. The middle part of the tooling block is provided with a pressure groove that matches the shape of the stamping head so that the cardboard sinks after being stamped by the stamping head. The air blowing connector can be connected to the air outlet pipe and is used to blow air into the pressure groove to blow out the cardboard and / or paper scraps.

2. A paperboard burst resistance testing apparatus as defined in claim 1, wherein: The tooling block is disc-shaped.

3. A paperboard burst resistance testing apparatus as defined in claim 2, wherein: The suction connector and the blowing connector are arranged at intervals in the circumferential direction of the tooling block.

4. A paperboard burst test apparatus according to any one of claims 1 to 3, characterized in that: An air-blowing groove is provided on the circumferential surface of the tooling block. The air-blowing groove extends radially and communicates with the pressure groove. The air-blowing connector is installed at the end of the air-blowing groove away from the center of the tooling block.

5. A paperboard burst test apparatus according to any one of claims 1 to 3, characterized by: The upper surface of the tooling block is provided with an air suction groove, and the air suction connector is connected to the air suction groove and used to extract gas from the air suction groove.

6. The paperboard bursting strength testing device according to claim 5, characterized in that: The air intake groove is arranged around the pressure groove.

7. The paperboard bursting strength testing device according to claim 6, characterized in that: The air intake groove is square in shape and is arranged longitudinally and transversely on the end face of the tooling block.

8. The paperboard bursting strength testing device according to claim 6, characterized in that: The bottom wall of the suction groove is provided with a first ventilation section extending axially along the tooling block, and the surface of the tooling block is provided with a second ventilation section extending radially along the tooling block. One end of the second ventilation section is connected to the first ventilation section, and the suction connector is installed at the other end of the second ventilation section.

9. The paperboard bursting strength testing device according to claim 1, characterized in that: The machine base is equipped with a central control screen, which integrates the control of the stamping module and the tooling module.

10. The paperboard bursting strength testing device according to claim 1, characterized in that: The drive assembly includes a drive cylinder, and the base is equipped with a pressure gauge for displaying the output pressure of the drive cylinder.

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