Sample injector incubation module capable of automatically opening and closing cover plate

Abstract

The utility model relates to a sample injector hatching module capable of automatically opening and closing a cover plate, which comprises a shell and the cover plate, the cover plate is assembled on the shell in a sliding manner along the front-back direction, the lower side of the cover plate is connected with a linear driving mechanism, the lower side of the cover plate is also connected with a switch separation blade, and the switch separation blade is used for being matched with a photoelectric switch arranged in the shell so as to sense the position of the cover plate. The hatching module of the sample injector is simpler in structure, the cover plate can be automatically opened and closed, and the problems of low operation efficiency and complex control program caused by the existing structural design are solved. And the installation position is not required, so that the equipment installation and debugging time and tedious steps are reduced. Meanwhile, the failure rate of the whole sample injector product can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automatic sampler, concretely relates to a kind of sampler hatching module of automatic switch cover plate. BACKGROUND

[0002] Sampler is mainly used in chromatography experiment and other experimental analysis, such as the utility model patent for an automatic sampler disclosed in the authorized announcement No.CN 221993389 U, mainly including hanging rack, mounting module, mounting module includes solvent module, mixing module, sample module, hatching module and aging module.Hatching module in it usually contains a heating element and a sample tray, the temperature of sample is improved by heating sample tray, so that its volatility increases.The structure of hatching module is as shown in Figure 1 And 2 The front end of cover plate 3 of hatching module 2 protrudes a baffle 31 upwards, magnet is inlaid in baffle 31;Push-pull piece 11 (iron) is arranged in the lower position of Z axis 1 of automatic sampler, and the two cooperate to realize the function of opening and closing cover plate 3.Automatic sampler is first moved to the front of hatching module 2, then Y axis moves backward, and baffle 31 of cover plate 3 is pushed backward by push-pull piece 11 on Z axis 1 to realize the function of opening cover plate 3;When Y axis moves forward, baffle 31 of cover plate 3 attracts push-pull piece 11 of Z axis to realize the function of closing cover plate 3.The problem of this structure is that: when opening or closing cover plate 3, it depends on the action of push-pull piece 11 of Z axis to realize, so that automatic sampler makes more actions, and reduces work efficiency.In addition, there are requirements for the installation position of hatching module 2, if the installation position is not suitable, it will cause mutual interference between push-pull piece 11 of Z axis and baffle 31 of cover plate 3, for example, baffle 31 is just on the running path of automatic sampler when it runs, which will cause the phenomenon of collision.In order to avoid the situation of mutual interference, the program of automatic sampler needs a large amount of algorithm optimization and avoidance, so that the program development test period and cost increase a lot.When cover plate is closed, it is realized by magnet attraction, and if the running resistance of cover plate increases in later period, it will cause the situation of cover plate closing failure. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of sampler hatching module of automatic switch cover plate, solve the problem existing in the structure of prior art switch hatching module cover plate.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The sampler hatching module of automatic switch cover plate, including shell, cover plate, cover plate is slidably assembled on shell along front-back direction, the lower side of cover plate is connected with linear drive mechanism, the lower side of cover plate is also connected with switch baffle, for cooperating with photoelectric switch arranged in shell to induct the position of cover plate.

[0006] Further, the straight line driving mechanism comprises a rack, a gear and a stepping motor, the rack is connected to the lower side of the cover plate, the length direction of the rack is consistent with the length direction of the cover plate, the gear is driven by the stepping motor, and the gear is engaged with the rack.

[0007] Further, the axis direction of the gear is arranged along the up-down direction.

[0008] Further, the stepping motor is fixed on the inner cover in the sample injector incubation module, and the photoelectric switch is fixed on the upper side of the inner cover.

[0009] Further, the photoelectric switch is a slot type photoelectric switch.

[0010] Further, the switch blocking piece is a long strip-shaped and can pass through the slot of the photoelectric switch.

[0011] Further, the upper side of the inner cover is provided with a guide structure for guiding the movement of the rack.

[0012] Further, the guide structure adopts a rubber-coated bearing, the axis direction of the rubber-coated bearing is arranged along the up-down direction, and the rubber-coated bearing is located on the left and right sides of the rack respectively.

[0013] Further, the shell comprises a left side plate and a right side plate, and the inner side walls of the left side plate and the right side plate are provided with sliding grooves for sliding cooperation of the cover plate.

[0014] Further, the rear portions of the left side plate and the right side plate are upwardly protruded and form mounting plates, and a mounting structure is arranged between the two mounting plates, the mounting structure has a hanging slot for cooperation with a horizontal shaft on the sample injector.

[0015] The utility model discloses the beneficial effect:

[0016] The utility model discloses a sample injector incubation module, cancels the blocking piece, magnet and Z axle's push -and -pull piece structure on the existing cover plate, makes whole structure more beautiful, and can open, close cover plate automatically, has solved the problem that the existing structure design leads to low operating efficiency and control program is complex. In addition, there is no requirement to installation position, can install at random position, reduces equipment installation and debugging time and complicated step, makes installation debugging more efficient. Simultaneously also reduced the whole sample injector product's failure rate. DRAWINGS

[0017] Figure 1 It is the partial perspective view of the existing incubation module;

[0018] Figure 2 It is the side view of the existing incubation module;

[0019] Figure 3 It is the perspective view of the incubation module of the utility model;

[0020] Figure 4 is the schematic diagram of the incubation module after removing part of the shell of the utility model;

[0021] Figure 5 is Figure 4 the schematic diagram after removing part of the structure on the basis;

[0022] Figure 6 is the partial view of the rear part of the incubation module of the utility model.

[0023] 1, Z axis; 11, push-pull piece; 2, incubation module; 3, cover plate; 31, baffle;

[0024] 41, left side plate; 411, sliding groove; 42, right side plate; 421, mounting plate; 43, mounting structure; 431, hanging groove; 5, cover plate; 6, sample disc; 71, stepper motor; 72, gear; 73, rack; 8, rubber-coated bearing; 91, photoelectric switch; 92, switch baffle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the protection scope of the utility model.

[0026] Embodiments of the utility model:

[0027] As Figures 3-6 shown, the sample injector incubation module with automatic on-off cover plate comprises a shell, a cover plate 5, the cover plate 5 is slidably assembled on the shell along the front-rear direction, the lower side of the cover plate 5 is connected with a linear driving mechanism, the linear driving mechanism drives the cover plate 5 to move forward and backward under the control of the control module, and opening and closing are realized. The incubation module cancels the baffle on the cover plate and the push-pull piece of the Z axis.

[0028] As Figure 3 and Figure 6 shown, the shell comprises a left side plate 41 and a right side plate 42, the inner side wall of the left side plate 41 and the right side plate 42 is provided with a sliding groove 411, which supports both sides of the cover plate 5 in the width direction and provides sliding cooperation for the cover plate 5.

[0029] As Figure 4 and Figure 5As shown, the straight line driving mechanism includes a rack 73, a gear 72 and a stepper motor 71, the rack 73 is connected to the lower side of the cover plate 5 by bolts, the length direction of the rack 73 is consistent with the length direction of the cover plate 5. The gear 72 is driven by the stepper motor 71, and the gear 72 is engaged with the rack 73. The axis direction of the gear 72 is arranged along the up-down direction, and the gear 72 is located at the rear position of the incubation module.

[0030] The stepper motor 71 is fixed in the inner cover in the incubation module, the inner cover is a structure of a sub-housing in the housing which can also be used to install other components, the stepper motor 71 is located in the sub-housing, the output shaft of the stepper motor 71 extends upwardly out of the inner cover, and the output shaft is installed with the above-mentioned gear 72.

[0031] The upper side of the inner cover is provided with a guide structure for guiding the movement of the rack 73. The guide structure adopts a rubber-coated bearing 8, the axis direction of the rubber-coated bearing 8 is arranged along the up-down direction, and the rubber-coated bearing 8 is located on the left and right sides of the rack 73 respectively. The non-tooth side of the rack 73 is guided by the rubber-coated bearing 8 to improve the stability. In other embodiments, a roller can also be used as a guide structure, and the axis direction of the roller is also arranged along the up-down direction.

[0032] The lower side of the cover plate 5 is also connected with a switch baffle 92 for cooperating with a photoelectric switch 91 arranged in the housing to sense the position of the cover plate 5. The photoelectric switch 91 is fixed on the upper side of the inner cover. The photoelectric switch 91 is a slot type photoelectric switch, and the switch baffle 92 is a long strip structure which can pass through the slot of the photoelectric switch 91. The switch baffle 92 moves synchronously with the cover plate 5, and the position of the cover plate 5 is sensed by the photoelectric switch 91, which is open, closed or intermediate state.

[0033] As shown in the drawings, Figure 3 The rear part of the left side plate 41 and the right side plate 42 is protruded upwardly and forms a mounting plate 421, and a mounting structure 43 is arranged between the two mounting plates 421, the mounting structure 43 has a hanging groove 431 for cooperating with a horizontal shaft on the sample injector (the horizontal shaft can refer to the content in the patent CN 221993389 U). The hanging groove 431 is approximately C-shaped and penetrates along the left-right direction. The hanging groove 431 has front and rear two, which are used together.

[0034] The working principle of the sample injector incubation module of the utility model is as follows:

[0035] The cover plate 5 can be automatically recognized position through the photoelectric switch 91 after power-on reset, and the Z-axis and Y-axis mechanism can be directly operated from above the incubation module during the operation of the sample feeder, and the Z-axis mechanism of the sample feeder can be operated at any position when the incubation module needs to open the cover plate 5, and after the cover plate 5 is opened to expose the sample disc 6, the sample bottle is placed in the sample disc 6, and then the cover plate 5 is automatically closed, and after being closed, the temperature control or other processes can be continued.

[0036] When the cover plate 5 is opened, the stepping motor 71 is rotated forward, and through the transmission of the gear 72 and the rack 73, the cover plate 5 is moved backward to the position; during the movement of the cover plate 5, the signal emitted by the photoelectric switch 91 is blocked, and after the cover plate 5 is moved backward to the position, the signal receiving end of the photoelectric switch 91 can receive the signal. The stepping motor 71 is reversed, and through the transmission of the gear 72 and the rack 73, the cover plate 5 is moved forward to the position. During the movement of the cover plate 5 forward and backward, the signal emitted by the photoelectric switch 91 is blocked, so if the cover plate 5 does not move to the position, for example, is stuck, the detection signal of the photoelectric switch 91 is abnormal, and a signal can be given to the controller to display the state on the display screen of the sample feeder or give an alarm; in this case, the sample feeder stops working.

[0037] The incubation module of the sample feeder of the utility model cancels the blocking piece, magnet and push-pull piece structure of the Z-axis on the cover plate, makes the whole structure more beautiful, and can automatically open and close the cover plate, solves the problem that the existing structure design leads to low operation efficiency and complex control program. In addition, there is no requirement for the installation position, and the equipment can be installed at any position, which reduces the equipment installation and debugging time and complicated steps, makes the installation and debugging more efficient. At the same time, the failure rate of the whole sample feeder product is also reduced.

[0038] In other embodiments, a lead screw nut mechanism can also be used as a linear driving mechanism to drive the cover plate to move linearly, but without the gear and rack mechanism, which is simple, and the gear and rack mechanism is easier to install.

Claims

1. An autosampler incubation module with an automatic lid opening plate, characterized by: The application relates to a sample injector incubation module, which comprises a shell, a cover plate, a linear driving mechanism and a switch baffle.

2. The auto-cap-well inductor module of claim 1, wherein: The linear driving mechanism comprises a rack, a gear and a stepping motor, the rack is connected to the lower side of the cover plate, the length direction of the rack is consistent with the length direction of the cover plate, the gear is driven by the stepping motor, and the gear is engaged with the rack.

3. The auto-cap-well-injector incubation module of claim 2, wherein: The axis direction of the gear is arranged along the up-down direction.

4. The auto-cap-well-injector incubation module of claim 3, wherein: The stepping motor is fixed on an inner cover in the sample injector incubation module, and the photoelectric switch is fixed on the upper side of the inner cover.

5. The auto-cap-well-injector incubation module of claim 4, wherein: The photoelectric switch is a groove type photoelectric switch.

6. The auto-cap-well sample injector incubation module of claim 5, wherein: The switch baffle is long strip-shaped and can pass through the notch of the photoelectric switch.

7. The auto-cap-well sample injector incubation module of claim 4, wherein: The upper side of the inner cover is provided with a guide structure for guiding the movement of the rack.

8. The auto-cap-well-injector incubation module of claim 7, wherein: The guide structure adopts a rubber-coated bearing, the axis direction of the rubber-coated bearing is arranged along the up-down direction, and the rubber-coated bearing and the gear are respectively arranged on the left and right sides of the rack.

9. The auto-cap-well-injector incubation module of claim 1, wherein: The shell comprises left and right side plates, the inner side walls of the left and right side plates are provided with sliding grooves for sliding cooperation with the cover plate.

10. The auto-cap-well-injector incubation module of claim 9, wherein: The rear portions of the left and right side plates are upwardly protruded and form mounting plates, a mounting structure is arranged between the two mounting plates, the mounting structure is provided with a hanging notch for cooperation with a horizontal shaft on the sample injector.

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