A fully automatic synchronous clamping and heating device

Abstract

The present invention provides a fully automatic synchronous clamping and heating device for clamping and heating a sample tube, which comprises a first heating plate and a second heating plate that are vertically arranged and parallel to each other. A plurality of sample tube placement grooves are formed on the opposite sides of the first heating plate and the second heating plate. Heat-conducting silica gel is arranged in the sample tube placement grooves. A tube support plate is horizontally and fixedly arranged at the lower end of the second heating plate. The upper side of the tube support plate abuts against the lower end of the first heating plate. The lower end of the sample tube can pass through the tube support plate and be received thereon. A moving plate is fixedly arranged on the lower side of the first heating plate. The clamping and heating device further comprises a clamping driving mechanism, which is used to drive the moving plate to move towards the tube support plate, aiming to solve the problem that the existing clamping and heating device cannot adapt to sample tubes with different diameter specifications.

Description

Technical Field

[0001] The present invention belongs to the technical field of experimental instruments, and particularly relates to a fully automatic synchronous clamping and heating device. Background Art

[0002] In an instrument for concentrating an extract sample containing an organic solvent, a clamping and heating device is often provided to evaporate the water in the sample so as to achieve the purpose of concentration. For example, in Chinese Patent CN205730407U, a concentration device capable of improving heating efficiency includes a heating furnace composed of a rear wall of the heating furnace and a front wall of the heating furnace. A test tube placement groove is jointly formed at the adjacent surfaces of the rear wall of the heating furnace and the front wall of the heating furnace. A heat-conducting silica gel is attached to the inner wall of the test tube placement groove. There is a gap between the rear wall of the heating furnace and the front wall of the heating furnace. A clamping mechanism for clamping or loosening the two is installed between the rear wall of the heating furnace and the front wall of the heating furnace. However, in this technical solution, the clamping mechanism is to manually pull the wrench. The wrench is connected to the pull rod, and the front wall and the rear wall of the heating furnace are tightened by the spring in the middle of the pull rod to clamp the sample tube, so that the heat-conducting silica gel in the heating furnace is in close contact with the sample tube to improve the heating efficiency. However, since the size of the heating furnace is fixed, and the tightening stroke of the clamping mechanism in the above technical solution is limited, it cannot adapt to sample tubes of different diameter specifications. Summary of the Invention

[0003] The present invention provides a fully automatic synchronous clamping and heating device, aiming to solve the problem that the existing clamping and heating device cannot adapt to sample tubes of different diameter specifications.

[0004] The technical solution of the present invention is as follows:

[0005] A fully automatic synchronous clamping and heating device for clamping and heating a sample tube includes a first heating plate and a second heating plate which are vertically arranged and parallel to each other. On the opposite sides of the first heating plate and the second heating plate, a plurality of sample tube placement grooves are formed. A heat-conducting silica gel is arranged in the sample tube placement groove. A tube support plate is horizontally and fixedly arranged at the lower end of the second heating plate. The upper side of the tube support plate abuts against the lower end of the first heating plate. The lower end of the sample tube can pass through the tube support plate and rest on it. A moving plate is fixedly arranged on the lower side of the first heating plate. The clamping and heating device further includes a clamping driving mechanism for driving the moving plate to move towards the tube support plate.

[0006] Preferably, the clamping driving mechanism includes a driving motor. The base of the driving motor is installed on the first connecting plate. A second connecting plate opposite to the first connecting plate is fixedly arranged on the lower side of the second heating plate. A bottom plate is arranged between the first connecting plate and the second connecting plate. The moving plate is located above the bottom plate. A bushing penetrating through the left and right sides of the moving plate is fixedly arranged on the moving plate. A guide rod passing through the bushing and slidably connected in the bushing is fixedly arranged on the side of the first connecting plate close to the second connecting plate.

[0007] A fully automatic synchronous clamping and heating device according to claim 2, wherein the clamping drive mechanism further comprises a plurality of synchronous transmission mechanisms and a lead screw. The synchronous transmission mechanism comprises a synchronous pulley and a synchronous belt. One of the synchronous pulleys of the synchronous transmission mechanism is connected to the rotating shaft end of the drive motor, and the other synchronous pulley is fixedly connected to the outside of the lead screw. A lead screw nut is fixedly arranged inside the moving plate. The lead screw sequentially passes through the synchronous pulley, the first connecting plate, the moving plate from left to right in the length direction of the lead screw and is threadedly connected to the lead screw nut.

[0008] Preferably, the synchronous transmission mechanism further comprises a tensioning pulley, and the outside of the tensioning pulley is connected to the outside of the synchronous belt.

[0009] Preferably, bearings are arranged inside both the first connecting plate and the second connecting plate. The lead screw is rotatably connected inside the bearings. A stopper is fixedly connected to the outside of the synchronous pulley. One end of the lead screw in the length direction penetrates into the synchronous pulley and is fixedly connected to the stopper, and the other end is rotatably connected to the bearing inside the second connecting plate.

[0010] Preferably, an optocoupler is fixedly arranged on the first connecting plate, and an induction sheet capable of contacting the optocoupler is fixedly arranged on one side of the moving plate close to the first connecting plate. The optocoupler is arranged on the movement path of the induction sheet. The contact between the optocoupler and the induction sheet controls the disconnection of the drive motor, and the disconnection between the optocoupler and the induction sheet controls the start of the drive motor.

[0011] Preferably, a limit screw is arranged on the side of the second heating plate close to the first heating plate, and the length of the limit screw can be adjusted.

[0012] Preferably, buffer silica gel is arranged at the position where the sample tube passes through the tube support plate.

[0013] Preferably, visual windows are opened on the upper sides of both the first connecting plate and the second connecting plate.

[0014] Preferably, a temperature sensor is arranged inside the second heating plate, a temperature fuse is fixedly arranged outside the second heating plate, and heating tubes are arranged inside both the first heating plate and the second heating plate. The temperature sensor measures the temperatures of the first heating plate and the second heating plate and transmits signals to the control circuit, and the control circuit controls the on-off of the temperature fuse and further controls the on-off of the heating tube circuit.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The fully automatic synchronous clamping and heating device provided by the present invention is configured such that the lower end of the sample tube can pass through the tube support plate. The shape of the sample tube placement groove and the shape of the opening edge of the tube support plate through which the lower end of the sample tube passes match the outer wall shape of sample tubes of different diameter specifications. Moreover, by providing a clamping drive mechanism to replace the existing drive method mainly based on spring tension, the pushing path of the clamping drive mechanism is below the first heating plate and the second heating plate, with no restrictions on the bottom of the sample tube and a relatively wide stroke, enabling it to adapt to sample tubes of different diameter specifications.

[0017] 2. The fully automatic synchronous clamping and heating device provided by the present invention enables the moving plate to move back and forth within the area formed by the first connecting plate, the bottom plate, and the second connecting plate. The overall integration of the device is high, and through the cooperation of the guide rod and the bushing, the moving plate is not prone to deviation during movement.

[0018] 3. The fully automatic synchronous clamping and heating device provided by the present invention drives the lead screw to rotate by connecting the drive motor to the synchronous transmission mechanism, with the lead screw nut remaining stationary, thereby moving the moving plate to replace manual drive. This solves the problems in the prior art that manual operation for clamping is prone to scalding, and it is difficult to control the elastic force of the spring. If the elastic force is too small, it cannot be tightly fastened; if the elastic force is too large, it is strenuous to manually fasten. After the spring is used for a long time, the elastic force is prone to failure, resulting in too large a heating gap and affecting the heating efficiency.

[0019] 4. The tensioning pulley of the fully automatic synchronous clamping and heating device provided by the present invention is used for tensioning the loose synchronous belt.

[0020] 5. The bearings and the stop blocks of the fully automatic synchronous clamping and heating device provided by the present invention prevent the lead screw from running out.

[0021] 6. The fully automatic synchronous clamping and heating device provided by the present invention performs in-place detection and judgment by means of an optocoupler fixed on the first connecting plate sensing an induction sheet arranged on the moving plate. After the optocoupler and the induction sheet come into contact, the power supply of the drive motor can be triggered to disconnect, achieving the function of automatically stopping in place and realizing the in-place detection of the back-and-forth movement of the moving plate.

[0022] 7. The limit screw of the fully automatic synchronous clamping and heating device provided by the present invention can be adjusted in length and is used for mechanical limitation of sample tubes of different pipe diameters to prevent the sample tubes from being clamped and broken, playing a safety role.

[0023] 8. The buffer silica gel of the fully automatic synchronous clamping and heating device provided by the present invention is used for the soft contact between the sample tube and the tube support plate to prevent damage to the sample tube during placement.

[0024] 9. The fully automatic synchronous clamping and heating device provided by the present invention can, through the visual window, check whether the first heating plate and the second plate are clamped in place and the heating condition of the bottom of the sample tube.

[0025] 10. A fully automatic synchronous clamping and heating device provided by the present invention uses a temperature sensor and a temperature fuse. The temperature fuse is used to disconnect the heating tube circuit when the temperature is overloaded to prevent temperature overload. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a fully automatic synchronous clamping and heating device of the present invention;

[0027] Figure 2 is a front sectional view of a fully automatic synchronous clamping and heating device of the present invention;

[0028] Figure 3 is Figure 2 the A-A sectional view of

[0029] Figure 4 is Figure 2 the B-B sectional view of

[0030] Figure 5 is Figure 2 the C-C sectional view of

[0031] Figure 6 is the state diagram of the limit screw after the first heating plate and the second heating plate are clamped;

[0032] Figure 7 is the state diagram of the limit screw after the first heating plate and the second heating plate are loosened.

[0033] Reference numerals: 1, sample tube; 2, first heating plate; 3, second heating plate; 4, sample tube placement groove; 5, thermal conductive silica gel; 6, tube support plate; 61, buffer silica gel; 7, moving plate; 8, clamping drive mechanism; 81, drive motor; 82, synchronous transmission mechanism; 83, synchronous pulley; 84, synchronous belt; 85, tensioning pulley; 86, first connecting plate; 87, second connecting plate; 88, guide rod; 89, bushing; 9, bottom plate; 10, lead screw; 11, lead screw nut; 12, bearing; 13, stop block; 14, spacer sleeve; 15, limit screw; 16, visual window; 17, heating tube; 18, temperature sensor; 19, temperature fuse; 20, optocoupler; 21, sensing piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions and advantages of the present invention clearer, the following will combine specific embodiments of the present application and refer to the attached Figure 1-7 , and clearly and completely describe the technical solutions of the present invention.

[0035] Taking Figure 1Describing the "up", "down", "left", and "right" directions under the view, a fully automatic synchronous clamping and heating device is used to clamp and heat the sample tube 1, including a first heating plate 2 and a second heating plate 3 that are vertically arranged and parallel to each other. On the opposite sides of the first heating plate 2 and the second heating plate 3, a plurality of sample tube placement grooves 4 are provided. A heat-conducting silica gel 5 is arranged in the sample tube placement groove 4. A tube support plate 6 is horizontally and fixedly arranged at the lower end of the second heating plate 3. The upper side of the tube support plate 6 abuts against the lower end of the first heating plate 2. The lower end of the sample tube 1 can pass through the tube support plate 6 and be supported thereon. A moving plate 7 is fixedly arranged on the lower side of the first heating plate 2. The clamping and heating device further includes a clamping drive mechanism 8, and the clamping drive mechanism 8 is used to drive the moving plate 7 to move towards the tube support plate 6. The lower end of the sample tube 1 can pass through the tube support plate 6. The shape of the sample tube placement groove 4 and the shape of the opening edge of the tube support plate 6 through which the lower end of the sample tube 1 passes match the outer wall shape of the sample tube 1 with different diameter specifications. And by setting the clamping drive mechanism 8 to replace the existing spring-tightening-based drive method, the pushing path of the clamping drive mechanism 8 is below the first heating plate 2 and the second heating plate 3, the bottom of the sample tube is not restricted, the stroke is wider, and it can adapt to the sample tube 1 with different diameter specifications.

[0036] The clamping drive mechanism 8 includes a drive motor 81, and the base of the drive motor 81 is installed on the first connecting plate 86. A second connecting plate 87 opposite to the first connecting plate 86 is fixedly arranged on the lower side of the second heating plate 3. A bottom plate 9 is arranged between the first connecting plate 86 and the second connecting plate 87. The moving plate 7 is located above the bottom plate 9. A bushing 89 is arranged on the moving plate 7. A guide rod 88 that passes through the bushing 89 and is slidably connected in the bushing 89 is fixedly arranged on the side of the first connecting plate 86 close to the second connecting plate 87. The moving plate 7 moves back and forth within the area formed by the first connecting plate 86, the bottom plate 9, and the second connecting plate 87. The overall integration degree of the device is high, and through the cooperation of the guide rod 88 and the bushing 89, the moving plate 7 is not prone to deviation during the moving process.

[0037] The clamping drive mechanism 8 also includes two synchronous transmission mechanisms 82 and a screw 10, and the synchronous transmission mechanism 82 includes a synchronous wheel 83 and a synchronous belt 84; one of the synchronous wheels 83 of the synchronous transmission mechanism 82 is connected to the rotating shaft end of the driving motor 81, and the other synchronous wheel 83 is fixedly connected to the outside of the screw, and a screw nut 11 is fixedly arranged in the movable plate 7, and the screw 10 passes through the synchronous wheel 83, the first connecting plate 86, and the movable plate 7 from left to right in the length direction and is threadedly connected with the screw nut 11. The screw 10 is driven to rotate by connecting the synchronous transmission mechanism 82 through the driving motor 81, and the screw nut 11 does not move, so that the movable plate 7 moves, so as to replace the human drive, and solve the problems of easy burns in the manual clamping in the prior art, and the spring's elastic force is difficult to control, the elastic force is too small to be fastened, the elastic force is too large, and the manual fastening is difficult, and the elastic force of the spring is easy to fail after a long time of use, which causes the heating gap to be too large and affects the heating efficiency.

[0038] The synchronous transmission mechanism 82 further includes a tensioning wheel 85, the outer side of which is connected to the outer side of the synchronous belt 84. The tensioning wheel 85 is used to loosen and tighten the synchronous belt 84.

[0039] The first connecting plate 86 and the second connecting plate 87 are both provided with bearings 12, the screw rod 10 is rotatably connected in the bearings 12, a stopper 13 is fixedly connected to the outside of the synchronous wheel 83, one end of the screw rod 10 penetrates the synchronous wheel 83 and is fixedly connected to the stopper 13, and the other end is rotatably connected in the bearings 12 of the second connecting plate 87 to prevent the screw rod 10 from running out. A spacer sleeve 14 is provided between the synchronous wheel 83 and the bearings 12, and the spacer sleeve 14 is sleeved on the screw rod 10.

[0040] The first connecting plate 86 is fixedly provided with an optical coupler 20, and a sensing sheet 21 that can contact the optical coupler 20 is fixedly provided on one side of the moving plate 7 close to the first connecting plate 86. The optical coupler 20 is arranged on the moving path of the sensing sheet 21. The contact between the optical coupler 20 and the sensing sheet 21 controls the disconnection of the driving motor 81, and the disconnection between the optical coupler 20 and the sensing sheet 21 controls the start of the driving motor 81. The optical coupler 20 fixed on the first connecting plate 86 senses the sensing sheet 21 arranged on the moving plate 7 to perform in-place detection and judgment. After the optical coupler 20 and the sensing sheet 21 contact, it can trigger the disconnection of the power supply of the driving motor 81, so as to achieve the automatic in-place stop effect, and realize the in-place detection of the moving plate 7 moving back and forth.

[0041] A limit screw 15 is provided on one side of the second heating plate 3 close to the first heating plate 2. The limit screw 15 is adjustable in length and is used for mechanically limiting sample tubes of different diameters to prevent the sample tubes from being broken by clamping, thus playing a safety role.

[0042] A buffer silica gel 61 is provided at the position where the sample tube 1 passes through the pipe support plate 6, which is used for the soft contact between the sample tube 1 and the pipe support plate 6 to prevent the sample tube 1 from being damaged when placed.

[0043] Visual windows 16 are provided on the upper sides of the first connecting plate 86 and the second connecting plate 87, through which it is possible to check whether the first heating plate 2 and the second heating plate 3 are clamped in place and the heating condition at the bottom of the sample tube 1.

[0044] A temperature sensor 18 is provided inside the second heating plate 3, a temperature fuse 19 is fixedly provided outside the second heating plate 3, and heating tubes 17 are provided inside both the first heating plate 2 and the second heating plate 3. The temperature sensor 18 measures the temperatures of the first heating plate 2 and the second heating plate 3 and transmits signals to the control circuit, and the control circuit controls the on / off of the temperature fuse 19 to further control the on / off of the heating tube 17 circuit. The temperature fuse 19 is used to disconnect the path of the heating tube 17 during temperature overload to prevent temperature overloading.

[0045] The implementation principle of the present invention is as follows: During use, the sample tube 1 is placed on the pipe support plate 6, the driving motor 81 is controlled to rotate, so that the moving plate 7 drives the first heating plate 2 to approach the second heating plate 3, thereby clamping the sample tube 1 between the first heating plate 2 and the second heating plate 3. After adjusting the temperature of the heating tube 17, heating of the sample tube 1 is started to achieve a fully automatic synchronous clamping and heating operation.

[0046] The present invention can be matched with automation projects to achieve the purpose of an intelligent laboratory.

[0047] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fully automatic synchronous clamping and heating device for clamping and heating a sample tube (1), comprising a first heating plate (2) and a second heating plate (3) which are vertically arranged and parallel to each other. A plurality of sample tube placement grooves (4) are formed on the opposite sides of the first heating plate (2) and the second heating plate (3). A heat-conducting silica gel (5) is arranged in the sample tube placement groove (4). It is characterized in that, A pipe support plate (6) is horizontally and fixedly arranged at the lower end of the second heating plate (3). The upper side of the pipe support plate (6) abuts against the lower end of the first heating plate (2). The lower end of the sample tube (1) can pass through the pipe support plate (6) and is received thereon. A moving plate (7) is fixedly arranged on the lower side of the first heating plate (2). The clamping and heating device further includes a clamping driving mechanism (8) for driving the moving plate (7) to move towards the pipe support plate (6). The clamping driving mechanism (8) includes a driving motor (81). The base of the driving motor (81) is installed on a first connecting plate (86). A second connecting plate (87) opposite to the first connecting plate (86) is fixedly arranged on the lower side of the second heating plate (3). A bottom plate (9) is arranged between the first connecting plate (86) and the second connecting plate (87). The moving plate (7) is located above the bottom plate (9). A bushing (89) penetrating through the left and right sides of the moving plate (7) is fixedly arranged on the moving plate (7). A guide rod (88) passing through the bushing (89) and slidably connected therein is fixedly arranged on the side of the first connecting plate (86) close to the second connecting plate (87). An optocoupler (20) is fixedly arranged on the first connecting plate (86). An induction sheet (21) corresponding to the optocoupler (20) is fixedly arranged on the side of the moving plate (7) close to the first connecting plate (86). The optocoupler (20) is arranged on the movement path of the induction sheet (21). The contact between the optocoupler (20) and the induction sheet (21) controls the disconnection of the driving motor (81), and the disconnection between the optocoupler (20) and the induction sheet (21) controls the start of the driving motor (81). A limit screw (15) is arranged on the side of the second heating plate (3) close to the first heating plate (2), and the length of the limit screw (15) can be adjusted.

2. The fully automatic synchronous clamping and heating device according to claim 1, wherein, The clamping driving mechanism (8) further includes a plurality of synchronous transmission mechanisms (82) and a lead screw (10). The synchronous transmission mechanism (82) includes a synchronous pulley (83) and a synchronous belt (84). One of the synchronous pulleys (83) of the synchronous transmission mechanism (82) is connected to the rotating shaft end of the driving motor (81), and the other synchronous pulley (83) is fixedly connected to the outside of the lead screw (10). A lead screw nut (11) is fixedly arranged inside the moving plate (7). The lead screw (10) sequentially passes through the synchronous pulley (83), the first connecting plate (86), and the moving plate (7) from left to right in the length direction and is threadedly connected to the lead screw nut (11).

3. The fully automatic synchronous clamping and heating device according to claim 2, characterized in that, The synchronous transmission mechanism (82) further includes a tension pulley (85), and the outside of the tension pulley (85) is connected to the outside of the synchronous belt (84).

4. The fully automatic synchronous clamping and heating device according to claim 2, wherein, Bearings (12) are arranged inside both the first connecting plate (86) and the second connecting plate (87). The lead screw (10) is rotatably connected inside the bearings (12). A stop block (13) is fixedly connected to the outside of the synchronous pulley (83). One end of the lead screw (10) penetrates into the synchronous pulley (83) and is fixedly connected to the stop block (13), and the other end is rotatably connected to the bearing (12) of the second connecting plate (87).

5. A fully automatic synchronous clamping and heating device according to claim 1, characterized in that, A buffer silica gel (61) is provided at the position where the sample tube (1) passes through the pipe support plate (6).

6. The fully automatic synchronous clamping and heating device according to claim 1, wherein, Visual windows (16) are provided on the upper sides of the first connecting plate (86) and the second connecting plate (87).

7. A fully automatic synchronous clamping and heating device according to claim 1, characterized in that, A temperature sensor (18) is provided inside the second heating plate (3), a temperature fuse (19) is fixedly provided outside the second heating plate (3), heating tubes (17) are provided inside both the first heating plate (2) and the second heating plate (3), the temperature sensor (18) measures the temperatures of the first heating plate (2) and the second heating plate (3), and transmits signals to a control circuit, and the control circuit controls the on-off of the temperature fuse (19) so as to control the on-off of the heating tube (17) circuit.

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