Headspace sample injector sample transferring device

Abstract

The utility model relates to the technical field of sample transfer of headspace sample injectors, in particular to a sample transfer device of a headspace sample injector, which comprises a vertical frame, a transfer mechanism is arranged on the vertical frame and is used for transferring sample bottles of the headspace sample injector, and the transfer mechanism comprises a moving component, a moving component and a moving component, the picking and placing assembly comprises a base arranged on the moving assembly, fixing bases are fixed to the two ends of the bottom of the base, a mounting base is fixed to the middle of the bottom of the base, guide rods are fixed between the two ends of the mounting base and the fixing bases at the two ends, and a first sliding plate, a second sliding plate and a third sliding plate are slidably mounted on the guide rods. Two first short rods are pivoted to two sides of the rear end of the mounting seat; two first long rods, a second long rod and a second short rod are pivoted to the rear ends of the first sliding plate, the second sliding plate and the third sliding plate respectively; and the plurality of suction heads can be adaptively adjusted according to the placement size and spacing of the sample bottles, so that the plurality of sample bottles can be simultaneously sucked and transferred.

Description

Technical Field

[0001] This utility model relates to the field of headspace sample transfer technology, specifically a headspace sample transfer device. Background Technology

[0002] Headspace sampler is a convenient and rapid sample pretreatment method in gas chromatography. Its principle is to place the sample to be tested into a sealed container, and heat it to make the volatile components volatilize from the sample matrix. The components reach equilibrium in the gas-liquid or gas-solid two phases, and the head gas is directly extracted for chromatographic analysis, thereby examining the composition and content of volatile components in the sample.

[0003] According to the authorization announcement number CN220351072U, a fully automated headspace sample transfer device is disclosed. This technology discloses "a fully automated headspace sample transfer device, including a sample chamber for holding several sample vials, and further including: an axial displacement device, which includes interconnected X-axis displacement devices, Y-axis displacement devices and Z-axis displacement devices, and a control device for controlling the X-axis displacement devices, Y-axis displacement devices and Z-axis displacement devices; a vacuum suction cup, which is disposed in the Z-axis displacement device for adsorbing sample vials; an XY-axis connector is connected between the X-axis displacement device and the Y-axis displacement device, and a YZ-axis connector is connected between the Y-axis displacement device and the Z-axis displacement device", etc., which has the technical effects of "a fully automated headspace sample transfer device that not only reduces the cost of use and increases the stability of the laboratory gas source, but also solves the problem of sample vial contamination".

[0004] Since only one sample vial can be transferred at a time in the above scheme, in experiments that require processing a large number of samples, each transfer of sample vials requires steps such as XYZ triaxial positioning, vacuum adsorption, and release. The cumulative time of these steps will increase exponentially with the increase in the number of samples. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a headspace sample transfer device. Multiple suction heads can be adapted and adjusted according to the size and spacing of the sample vials, enabling the simultaneous adsorption and transfer of multiple sample vials, thereby improving transfer efficiency and adaptability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a headspace sample transfer device, comprising a support frame, wherein a transfer mechanism is mounted on the support frame for transferring sample vials from the headspace sampler, the transfer mechanism comprising:

[0007] A movable component, mounted on a stand, is used to control the transfer position;

[0008] The pickup and placement assembly includes a base mounted on a movable assembly. Fixed seats are fixed at both ends of the base bottom, and a mounting seat is fixed in the middle of the base bottom. Guide rods are fixed between the two ends of the mounting seat and the fixed seats at both ends. A first sliding plate, a second sliding plate, and a third sliding plate are slidably mounted on the guide rods. Two first short rods are pivotally connected to both sides of the rear end of the mounting seat. Two first long rods, a second long rod, and a second short rod are pivotally connected to the rear ends of the first sliding plate, the second sliding plate, and the third sliding plate, respectively. The first short rods, the first long rods, the second long rods, and the second short rods are pivotally connected to each other.

[0009] The execution component includes movable plates that are slidably mounted on both sides of the mounting base, on the first slide plate, the second slide plate, and the third slide plate, with suction heads installed at the lower ends of the movable plates.

[0010] Preferably, the actuation component further includes a second cylinder mounted on both sides of the mounting base, the lower ends of the first slide plate, the second slide plate, and the third slide plate, and the output end of the second cylinder is fixed to the movable plate, and a vacuum generator is mounted on the rear end of the mounting base.

[0011] Preferably, the pickup and placement assembly further includes a first cylinder fixed at both ends of the bottom of the base, the output end of the first cylinder is fixed with a connector, and the connector is fixed at the rear end of the third slide plate, and limit blocks are fixed at both ends of the bottom of the base.

[0012] Preferably, the first short rod and the second short rod are of equal length, the first long rod and the second long rod are of equal length, and the lengths of the first short rod and the second short rod are half the lengths of the first long rod and the second long rod.

[0013] Preferably, the moving component includes an X-axis linear guide fixed to the top of the frame, a Y-axis linear guide mounted on the X-axis linear guide slider, and a Z-axis linear guide mounted on the Y-axis linear guide slider.

[0014] Preferably, the moving component further includes a servo motor mounted on the Z-axis linear guide slider, with a connector fixed to the output end of the servo motor and a base fixed to the bottom of the connector.

[0015] Beneficial effects

[0016] This invention provides a headspace sample transfer device. Compared with the prior art, it has the following advantages:

[0017] 1. When the third slide plate moves, the second slide plate is driven by the second short rod in conjunction with the second long rod. At the same time, the second long rod drives the first slide plate to move through the first long rod in conjunction with the first short rod. This makes the actuators on the third slide plate, the second slide plate and the first slide plate move synchronously and at equal distances. This allows for adaptation and adjustment according to the size and spacing of the sample bottles, enabling the simultaneous adsorption and transfer of multiple sample bottles, thus improving transfer efficiency and adaptability.

[0018] 2. The output end of the second cylinder drives the movable plate to move the suction head for fine-tuning, ensuring the stability and accuracy of the operation; the output end of the servo motor drives the connector to rotate the execution component on the pick-and-place assembly, so that the moving component can not only perform linear transport, but also rotational operation, further enhancing the flexibility and versatility of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the mobile component in this utility model;

[0021] Figure 3 This is a schematic diagram of the front view of the pickup and placement component and the execution component in this utility model;

[0022] Figure 4 This is a schematic diagram of the back of the pickup and placement component and the execution component in this utility model;

[0023] Figure 5 This is a schematic diagram of the back of the pickup and placement component in this utility model.

[0024] In the diagram: 1. Stand; 2. Transfer mechanism; 21. Moving component; 211. X-axis linear guide; 212. Y-axis linear guide; 213. Z-axis linear guide; 214. Servo motor; 215. Connector; 22. Pick-and-place component; 221. Base; 222. Fixing base; 223. Mounting base; 224. Guide rod; 225. First slide plate; 226. Second slide plate; 227. Third slide plate; 228. First short rod; 229. First long rod; 2210. Second long rod; 2211. Second short rod; 2212. First cylinder; 2213. Connector; 2214. Limit block; 23. Actuation component; 231. Movable plate; 232. Suction head; 233. Second cylinder; 234. Vacuum generator. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 5This utility model provides a technical solution: a headspace sample transfer device, including a stand 1, on which a transfer mechanism 2 is provided for transferring sample vials of the headspace sampler, the transfer mechanism 2 including:

[0027] The movable component 21 is mounted on the upright 1 and is used to control the transfer position;

[0028] The pickup and placement assembly 22 includes a base 221 mounted on the moving assembly 21. Fixed seats 222 are fixed at both ends of the base 221. A mounting seat 223 is fixed in the middle of the base 221. Guide rods 224 are fixed between the mounting seat 223 and the fixed seats 222 at both ends. A first sliding plate 225, a second sliding plate 226, and a third sliding plate 227 are slidably mounted on the guide rods 224. Two first short rods 228 are pivotally connected to both sides of the rear end of the mounting seat 223. Two first long rods 229, a second long rod 2210, and a second short rod 2211 are pivotally connected to the rear ends of the first sliding plate 225, the second sliding plate 226, and the third sliding plate 227, respectively. The first short rods 228, the first long rods 229, the second long rods 2210, and the second short rods 2211 are pivotally connected to each other.

[0029] The execution component 23 includes a movable plate 231 that is slidably mounted on both sides of the mounting base 223, on the first sliding plate 225, the second sliding plate 226 and the third sliding plate 227, and a suction head 232 is installed at the lower end of the movable plate 231.

[0030] In this embodiment, when the third slide plate 227 moves, the second slide plate 226 is driven by the second short rod 2211 in conjunction with the second long rod 2210. At the same time, the second long rod 2210 drives the first slide plate 225 to move through the first long rod 229 in conjunction with the first short rod 228. This causes the actuators 23 on the third slide plate 227, the second slide plate 226, and the first slide plate 225 to move synchronously and at equal intervals. This allows for adaptation and adjustment according to the size and spacing of the sample bottles, enabling the simultaneous adsorption and transfer of multiple sample bottles, thus improving transfer efficiency and adaptability.

[0031] Specifically, the execution component 23 also includes a second cylinder 233 installed on both sides of the mounting base 223, the lower end of the first slide plate 225, the second slide plate 226 and the third slide plate 227, and the output end of the second cylinder 233 is fixed to the movable plate 231, and a vacuum generator 234 is installed at the rear end of the mounting base 223.

[0032] In this embodiment, the output end of the second cylinder 233 drives the movable plate 231 to drive the suction head 232 to perform fine-tuning of lifting and lowering, ensuring the stability and accuracy of operation.

[0033] Specifically, the pick-and-place assembly 22 also includes a first cylinder 2212 fixed at both ends of the bottom of the base 221. The output end of the first cylinder 2212 is fixed with a connector 2213, and the connector 2213 is fixed at the rear end of the third slide plate 227. Limit blocks 2214 are fixed at both ends of the bottom of the base 221.

[0034] In this embodiment, the output end of the first cylinder 2212 drives the connector 2213 to drive the third slide plate 227 to slide along the guide rod 224.

[0035] Specifically, the first short rod 228 and the second short rod 2211 are of equal length, the first long rod 229 and the second long rod 2210 are of equal length, and the lengths of the first short rod 228 and the second short rod 2211 are half the lengths of the first long rod 229 and the second long rod 2210.

[0036] In this embodiment, the first short rod 228, the first long rod 229, the second long rod 2210, and the second short rod 2211 can be used to control the first slide plate 225, the second slide plate 226, and the third slide plate 227 to move synchronously and at equal distances.

[0037] Specifically, the moving component 21 includes an X-axis linear guide 211 fixed to the top of the stand 1, a Y-axis linear guide 212 mounted on the slider of the X-axis linear guide 211, and a Z-axis linear guide 213 mounted on the slider of the Y-axis linear guide 212.

[0038] In this embodiment, the sample bottle adsorbed by the execution component 23 on the pick-and-place component 22 is transferred by the X-axis linear guide 211, Y-axis linear guide 212 and Z-axis linear guide 213, thereby improving the overall level of automation.

[0039] Specifically, the moving component 21 also includes a servo motor 214 mounted on the slider of the Z-axis linear guide 213. The output end of the servo motor 214 is fixed with a connector 215, and the base 221 is fixed to the bottom of the connector 215.

[0040] In this embodiment, the output end of the servo motor 214 drives the connector 215 to rotate the execution component 23 on the pick-and-place component 22, so that the moving component 21 can not only perform linear transport, but also perform rotational operation, further enhancing the flexibility and multifunctionality of the device.

[0041] The working principle and usage process of this utility model are as follows: First, the output end of the first cylinder 2212 drives the connecting piece 2213 to drive the third slide plate 227 to slide along the guide rod 224; the third slide plate 227 drives the second slide plate 226 through the second short rod 2211 and the second long rod 2210, while the second long rod 2210 drives the first slide plate 225 to move through the first long rod 229 and the first short rod 228, so that the execution components 23 on the third slide plate 227, the second slide plate 226 and the first slide plate 225 move synchronously and at equal distances, so that they can be adapted and adjusted according to the size and spacing of the sample bottles, so as to simultaneously adsorb and transfer multiple sample bottles, thereby improving the transfer efficiency and adaptability;

[0042] Then, the output end of the second cylinder 233 drives the movable plate 231 to drive the suction head 232 to make fine adjustments in height, ensuring the stability and accuracy of the operation;

[0043] Finally, the sample vials adsorbed by the execution component 23 on the pick-and-place assembly 22 are transferred by the X-axis linear guide 211, Y-axis linear guide 212 and Z-axis linear guide 213, thereby improving the overall level of automation.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A headspace sampler sample transfer device comprising a stand (1), characterised in that: The stand (1) is provided with a transfer mechanism (2) and is used for sample bottle transfer of a headspace sampler, the transfer mechanism (2) comprises: A moving assembly (21) is arranged on the stand (1) and is used for controlling the transfer position; A pick-and-place assembly (22) comprises a base (221) arranged on the moving assembly (21), both ends of the bottom of the base (221) are fixedly provided with fixing seats (222), the middle of the bottom of the base (221) is fixedly provided with a mounting seat (223), both ends of the mounting seat (223) are fixedly provided with guide rods (224) between the fixing seats (222) at both ends, the first slide plate (225), the second slide plate (226) and the third slide plate (227) are slidably arranged on the guide rods (224), both sides of the rear end of the mounting seat (223) are pivotally provided with two first short rods (228), the rear end of the first slide plate (225), the second slide plate (226) and the third slide plate (227) are pivotally provided with two first long rods (229), two second long rods (2210) and a second short rod (2211) respectively, and the first short rod (228), the first long rod (229), the second long rod (2210) and the second short rod (2211) are pivotally connected; An executing assembly (23) comprises movable plates (231) slidably arranged on both sides of the mounting seat (223), the first slide plate (225), the second slide plate (226) and the third slide plate (227), and a suction head (232) is arranged on the lower end of the movable plate (231).

2. A headspace sampler sample transfer device according to claim 1, wherein: The executing assembly (23) further comprises second air cylinders (233) arranged on both sides of the mounting seat (223), the first slide plate (225), the second slide plate (226) and the third slide plate (227), and the output end of the second air cylinder (233) is fixedly connected with the movable plate (231), and a vacuum generator (234) is arranged at the rear end of the mounting seat (223).

3. A headspace sampler sample transfer device according to claim 1, wherein: The pick-and-place assembly (22) further comprises first air cylinders (2212) fixedly arranged at both ends of the bottom of the base (221), the output end of the first air cylinder (2212) is fixedly provided with a connecting piece (2213), and the connecting piece (2213) is fixedly arranged at the rear end of the third slide plate (227), and limit blocks (2214) are fixedly arranged at both ends of the bottom of the base (221).

4. The headspace sampler sample transfer device of claim 1, wherein: The lengths of the first short rod (228) and the second short rod (2211) are equal, the lengths of the first long rod (229) and the second long rod (2210) are equal, and the lengths of the first short rod (228) and the second short rod (2211) are half of the lengths of the first long rod (229) and the second long rod (2210).

5. A headspace sampler sample transfer device according to claim 1, wherein: The moving assembly (21) comprises an X-axis linear guide rail (211) fixedly arranged at the top of the stand (1), a Y-axis linear guide rail (212) arranged on the sliding block of the X-axis linear guide rail (211), and a Z-axis linear guide rail (213) arranged on the sliding block of the Y-axis linear guide rail (212).

6. A headspace sampler sample transfer device according to claim 5, wherein: The moving assembly (21) further comprises a servo motor (214) arranged on the sliding block of the Z-axis linear guide rail (213), and a connecting head (215) is fixedly arranged at the output end of the servo motor (214), and the base (221) is fixedly arranged at the bottom of the connecting head (215).

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