Sampling knife assembly and sampling device

Abstract

The embodiment of the utility model provides a sampling knife assembly and a sampling device. The sampling knife assembly comprises a knife holder and a sampling knife, the vacuum suction cups are fixed on the tool apron and extend into the sampling tool; the pump is communicated with the vacuum suction cups and is used for vacuumizing; the top plate is positioned in the sampling cutter and slides relative to the sampling cutter; the driving mechanism drives the top plate to slide along the axis of the sampling cutter; the top plate is provided with receding holes in one-to-one correspondence with the vacuum suction cups. When the top plate slides to a first set position, an accommodating space for accommodating a sample is formed in the sampling cutter, and the vacuum chuck penetrates through the avoiding hole and extends to the accommodating space. According to the technical scheme, the sampling cutter is used for cutting rubber, the sampling cutter is used for containing the cut sample wafer, and the sample wafer is adsorbed through the vacuum suction cup in the sampling cutter, so that the stability of the sample wafer is guaranteed. In addition, the sample piece is pushed out of the sampling cutter through the top plate, so that the sample piece is convenient to demold.

Description

Technical Field

[0001] The present application relates to the technical field of rubber production, and in particular to a sampling knife assembly and a sampling device. Background Art

[0002] During the mixing process in rubber tire and product factories, each batch of material must be inspected to ensure its composition meets subsequent production requirements and to check for impurities that might prevent it from meeting these requirements. Currently, there are two approaches to automatically picking up rubber discs: one uses a knife to cut the disc and then pick up the material through the adhesive and friction between the inner wall of the knife and the sample; the other uses a robot inside the knife to pick up the sample after the knife cuts the disc.

[0003] However, different rubber products require different formulations, resulting in varying degrees of hardness and viscosity. Furthermore, different processes require varying thicknesses of rubber, and the increasing number of test categories requires different diameters and thicknesses of sample pieces. This makes existing methods of grabbing samples using friction or robotic grippers inadequate. Utility Model Content

[0004] The utility model of the present application aims to provide a sampling knife assembly and a sampling device to improve the sampling effect.

[0005] The embodiment of the present application provides a sampling knife assembly, which includes a knife holder and a sampling knife; wherein the sampling knife is a cylindrical structure, one end of the sampling knife is the cutting edge of the sampling knife, and the other end of the sampling knife is fixedly connected to the knife holder;

[0006] It also includes a plurality of vacuum suction cups fixed to the knife holder and extending into the sampling knife, and a pump connected to the plurality of vacuum suction cups and used for vacuuming;

[0007] The device further comprises a top plate located inside the sampling knife and sliding relative to the sampling knife, and a driving mechanism for driving the top plate to slide along the axis of the sampling knife; wherein the top plate is provided with a relief hole corresponding to each vacuum suction cup;

[0008] When the top plate slides to the first set position, a receiving space for receiving the sample is provided in the sampling knife, and the vacuum suction cup passes through the avoidance hole and extends to the receiving space.

[0009] In the above technical solution, a sampling knife is used to cut the rubber, and the sample is held by the knife. The sample is sucked by a vacuum suction cup inside the knife to ensure the stability of the sample. In addition, the sample is pushed out of the sampling knife through the top plate, which facilitates the sample to be ejected from the mold.

[0010] In a specific embodiment, the plurality of vacuum suction cups are evenly arranged, and the plurality of vacuum suction cups are arranged in a ring shape around the axis of the sampling knife.

[0011] In a specific embodiment, there are four vacuum suction cups, and the four vacuum suction cups are arranged in a ring shape.

[0012] In a specific possible implementation scheme, along the axis direction of the sampling knife, the ratio of the distance from any one of the vacuum suction cups to the axis of the sampling knife to the inner diameter of the sampling knife is between 1 / 2 and 3 / 4.

[0013] In a specific possible implementation manner, each of the vacuum suction cups includes a hard pipe fixedly connected to the tool holder, and an elastic disc body communicated with the hard pipe; wherein the elastic disc body is a corrugated structure.

[0014] In a specific embodiment, the elastic disc has a flared end at one end facing away from the hard pipe.

[0015] In a specific possible implementation manner, the hard pipe is connected to the tool holder via threads; and a channel communicating with the hard pipe is provided in the tool holder.

[0016] In a second aspect, a sampling device is provided, which includes a support member and any one of the above-mentioned sampling knife assemblies connected to the support member.

[0017] In the above technical solution, a sampling knife is used to cut the rubber, and the sample is held by the knife. The sample is sucked by a vacuum suction cup inside the knife to ensure the stability of the sample. In addition, the sample is pushed out of the sampling knife through the top plate, which facilitates the sample to be ejected from the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a sampling knife assembly provided in an embodiment of the present application;

[0019] Figure 2 A cross-sectional view of a sampling knife assembly provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the structure of the vacuum suction cup provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] To facilitate understanding of the sampling knife assembly provided in the embodiments of the present application, its application scenario will first be described. The sampling knife assembly provided in the embodiments of the present application is used for rubber sampling. In the prior art, when sampling rubber, after the sample is removed, it is very likely that the sample cannot be carried away by the sampling knife after cutting. To this end, the embodiments of the present application provide a sampling knife assembly to improve the effectiveness of the sampling knife in carrying the sample after sampling. This is described in detail below with reference to specific drawings and embodiments.

[0024] refer to Figure 1 and Figure 2 As shown, Figure 1 The schematic diagram of the structure of the sampling knife assembly provided in the embodiment of the present application is shown. Figure 2 A cross-sectional view of a sampling knife assembly provided in an embodiment of the present application is shown. The sampling knife assembly provided in an embodiment of the present application includes a knife holder 30 and a sampling knife 10 connected to the knife holder 30, wherein the knife holder 30 is used to support the sampling knife 10 and drive the sampling knife 10 to press down to cut the rubber to obtain a sample. The knife holder 30 can be driven by other driving devices, such as a telescopic cylinder or other linear driving devices. The sampling knife 10 is a device for cutting rubber, and is used to cut rubber to obtain a sample. The sampling knife 10 is a cylindrical structure, and one end of the sampling knife 10 is a blade 11, and the other end of the sampling knife 10 is fixedly connected to the knife holder 30. When cutting rubber, the rubber is cut by the blade 11 of the sampling knife 10 to obtain a sample.

[0025] Continue to refer Figure 1As shown in , the sampling knife 10 provided in the embodiment of the present application is a cylindrical structure. The cylindrical structure has two opposite ends along the axial direction, one end of which is fixedly connected to the knife holder 30 to fix the knife holder 30 to the sampling knife 10. The sampling knife 10 and the knife holder 30 can be connected by bolts or by different connection methods such as interference fit, which are not specifically limited in the embodiment of the present application. The other end of the sampling knife 10 is an open end, and the open end has a blade 11. When cutting, the rubber can be cut by the blade 11.

[0026] Continue to refer Figure 1 As shown in , the sampling knife assembly provided by the embodiment of the present application also includes a plurality of vacuum suction cups 20 fixed to the knife holder 30, and the vacuum suction cups 20 are used to absorb the sample entering the sampling knife 10. In the specific setting, the plurality of vacuum suction cups 20 are fixed on the knife holder 30 and extend into the sampling knife 10. The plurality of vacuum suction cups 20 are connected to a pump, and the pump is used to vacuum so that the vacuum suction cups 20 can absorb the sample. During use, after the sample is cut by the blade 11 of the sampling knife 10 and enters the sampling knife 10, the vacuum suction cups 20 contact the sample, and the pump vacuums so that the vacuum suction cups 20 absorb the sample and fix the sample. When the knife holder 30 carries the sampling knife 10 away from the rubber, the sample can be kept in the sampling knife 10 by the adsorption of the vacuum suction cups 20, thereby ensuring the stability of the sample removal. When the sample is moved to a position and needs to be ejected from the mold, the pump supplies air into the vacuum suction cup 20 , thereby contacting the vacuum suction cup 20 to absorb the sample, and the sample can be separated from the sampling knife 10 .

[0027] The sampling knife assembly provided in an embodiment of the present application also includes a top plate 40, which is located in the sampling knife 10 and can slide relative to the sampling knife 10. The top plate 40 is used to eject the sample from the sampling knife 10 to achieve demolding of the sample. Exemplarily, the sliding direction of the top plate 40 is along the axial direction of the sampling knife 10. When the top plate 40 slides, it can control the size of the space between the blade 11 of the sampling knife 10 and the top plate 40, and the space is the space for accommodating the sample. When the top plate 40 slides away from the blade 11, there is a larger space between the top plate 40 and the blade 11, and the space can accommodate the sample. When the top plate 40 slides close to the blade 11, the top plate 40 can push the accommodated sample out of the sampling knife 10.

[0028] When the top plate 40 cooperates with the vacuum cup 20, a relief hole ( Figure 1(Unmarked; the position of the relief hole can be referenced to the position of the vacuum suction cup 20.) This relief hole allows the vacuum suction cup 20 to be exposed. When the top plate 40 slides to the first set position (where the top plate 40 is away from the blade 11), a sample storage space is created within the sampling knife 10, and the vacuum suction cup 20 extends through the relief hole and into the storage space. The sample inserted into the sampling knife 10 can be sucked by the vacuum suction cup 20.

[0029] When the top plate 40 is driven, it is driven by a driving mechanism 50, which can be a common linear driving mechanism such as a driving cylinder or a driving hydraulic cylinder. When the driving mechanism 50 is working, the top plate 40 can be away from the blade 11 or close to the blade 11 to accommodate the sample or push the sample out.

[0030] Through the above description, the sampling knife assembly provided in the embodiment of the present application cuts the rubber by using the sampling knife 10, and the sample slices cut are accommodated by the sampling knife 10, and the stability of the sample slices is ensured by adsorbing the sample slices by the vacuum suction cup 20 in the sampling knife 10. In addition, the sample slices are pushed out from the sampling knife 10 by the top plate 40, which facilitates the demolding of the sample slices. In addition, in view of the different formulas corresponding to different rubber products, which lead to different hardness and viscosity of the rubber materials, and different thickness of the rubber materials required for different processes, the increase in the number of detection categories, which leads to different diameters and thicknesses of the sample slices to be sampled, the use of the vacuum suction cup 20 can effectively achieve the adsorption of the sample slices, thereby improving the applicability of the sampling knife assembly.

[0031] In one feasible solution, to ensure the stability of the vacuum cups 20 when adhering to the sample, multiple vacuum cups 20 are evenly arranged and arranged in a ring around the axis of the sampling knife 10. This ensures that when the vacuum cups 20 adsorb the sample, the force they exert on the sample is roughly circular, and they are arranged around the axis of the sample, improving the force applied to the sample and ensuring the stability of the sample during adsorption.

[0032] The number of vacuum cups 20 is multiple, such as three, four, five, etc. Figure 1 The example shows four vacuum cups 20 arranged in a ring. However, it should be understood that the number of vacuum cups 20 provided in the present embodiment is not limited to four, and may also be five, six, or other different numbers. These examples are not listed one by one in the present embodiment.

[0033] Continue to refer Figure 1As shown in , when the vacuum suction cup 20 provided in the embodiment of the present application is arranged, along the axial direction of the sampling knife 10, the ratio of the distance from any vacuum suction cup 20 to the axis of the sampling knife 10 to the inner diameter of the sampling knife 10 is between 1 / 2 and 3 / 4. That is, in the radial direction of the sampling knife 10, the ratio of the distance from the position where the vacuum suction cup 20 adsorbs the sample to the axis of the sample is 1 / 2 to 3 / 4. As a result, the position where the vacuum suction cup 20 adsorbs the sample is located at half the radius of the sample or close to the edge. When arranged in the above manner, the stability of the force applied to the sample when the vacuum suction cup 20 adsorbs the sample can be guaranteed. In addition, when the sampling knife 10 cuts the sample, if there is still adhesion between the sample and the rubber, since the edge of the sample is close to the vacuum suction cup 20, the sample can be removed from the rubber by the pulling force of the vacuum suction cup 20, thereby ensuring the sampling effect.

[0034] For reference Figure 3 When specifically configuring the vacuum suction cup 20, each vacuum suction cup 20 includes a hard pipe 21 fixedly connected to the tool holder 30, and an elastic disc 22 in communication with the hard pipe 21; wherein the elastic disc 22 is a bellows structure. In the above structure, the vacuum suction cup 20 is supported by the hard pipe 21, and vacuum adsorption is achieved by the elastic disc 22. When the elastic disc 22 adopts a bellows structure, on the one hand, the elasticity of the elastic disc 22 is increased. When in contact with the sample, the elastic change of the elastic disc 22 itself can create a certain amount of pressure between the elastic disc 22 and the sample, thereby ensuring the sealing of the contact point between the two.

[0035] As an example, the elastic disc 22 has a flared opening at one end facing away from the hard pipe 21 , which increases the contact area between the elastic disc 22 and the sample, thereby ensuring the stability of the vacuum suction cup 20 when adsorbing the sample.

[0036] In one feasible solution, when the vacuum suction cup 20 is connected to the tool holder 30, it is connected to the tool holder 30 via a hard pipe 21. Specifically, the hard pipe 21 and the tool holder 30 are threadedly connected; and a channel connected to the hard pipe 21 is provided in the tool holder 30. In a specific configuration, a channel is provided on the tool holder 30, and the end of the hard pipe 21 away from the elastic disc 22 is threadedly connected to the channel, thereby connecting the channel to the elastic disc 22. The end of the channel away from the hard pipe 21 is connected to the pump, thereby forming a channel connecting the pump and the elastic disc 22. When adopting the above method, if the vacuum suction cup 20 is damaged, the vacuum suction cup 20 can be directly removed from the tool holder 30 and replaced with a new vacuum suction cup 20.

[0037] The present application also provides a sampling device comprising a support member and any of the aforementioned sampling knife assemblies connected to the support member. The support member is configured to drive the sampling knife assembly to cut the rubber. For example, the support member drives the sampling knife assembly downward to cut the rubber, and then drives the sampling knife assembly upward to release the rubber after cutting is complete.

[0038] In the above technical solution, a sampling knife is used to cut the rubber, and the sample is held by the knife. The sample is sucked by a vacuum suction cup inside the knife to ensure the stability of the sample. In addition, the sample is pushed out of the sampling knife through the top plate, which facilitates the sample to be ejected from the mold.

[0039] The one or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included within the scope of protection of this disclosure.

[0040] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A sampling knife assembly, characterized in that: It includes a knife holder and a sampling knife; wherein, the sampling knife is a cylindrical structure, one end of the sampling knife is the cutting edge of the sampling knife, and the other end of the sampling knife is fixedly connected to the knife holder; It also includes a plurality of vacuum suction cups fixed to the knife holder and extending into the sampling knife, and a pump connected to the plurality of vacuum suction cups and used for vacuuming; The device further comprises a top plate located inside the sampling knife and sliding relative to the sampling knife, and a driving mechanism for driving the top plate to slide along the axis of the sampling knife; wherein the top plate is provided with a relief hole corresponding to each vacuum suction cup; When the top plate slides to the first set position, a receiving space for receiving the sample is provided in the sampling knife, and the vacuum suction cup passes through the avoidance hole and extends to the receiving space.

2. The sampling knife assembly according to claim 1, characterized in that: The plurality of vacuum suction cups are evenly arranged, and the plurality of vacuum suction cups are arranged in a ring shape around the axis of the sampling knife.

3. The sampling knife assembly according to claim 2, characterized in that: There are four vacuum suction cups, and the four vacuum suction cups are arranged in a ring shape.

4. The sampling knife assembly according to claim 2, characterized in that: Along the axis direction of the sampling knife, the ratio of the distance from any vacuum suction cup to the axis of the sampling knife to the inner diameter of the sampling knife is between 1 / 2 and 3 / 4.

5. The sampling knife assembly according to claim 1, characterized in that: Each of the vacuum suction cups includes a hard pipe fixedly connected to the tool holder, and an elastic disc body communicated with the hard pipe; wherein the elastic disc body is a corrugated structure.

6. The sampling knife assembly according to claim 5, characterized in that: One end of the elastic disc body facing away from the hard pipe has a flared opening.

7. The sampling knife assembly according to claim 5, characterized in that: The hard pipe is connected to the knife seat through threads; and a channel communicating with the hard pipe is provided in the knife seat.

8. A sampling device, characterized in that: The invention comprises a support member and a sampling knife assembly according to any one of claims 1 to 7 connected to the support member.

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