Tray taking and placing device for Chinese herbal medicine steam sterilization equipment

Abstract

The invention discloses a tray taking and placing device for Chinese herbal medicine steam sterilization equipment. The tray taking and placing device comprises a moving table and a taking and placing mechanism. Symmetrically-distributed supporting frames are arranged on the rear side of the upper surface of the movable table, evenly-distributed supporting plates are connected between the upper ends of the supporting frames through bolts, C-shaped frames which are symmetrically distributed left and right are fixedly connected to the front side of the upper surface of the movable table, and the upper ends of the C-shaped frames are fixedly connected with the lower surface of the supporting plate at the lowest end; handrails are arranged at the left and right ends of the rear side of the upper surface of the moving table; the taking and placing mechanism comprises a support, a guide rail, a linear sliding table, a clamping assembly and an extending assembly, the support is arranged on the rear side of the upper surface of the moving table, and the linear sliding table is arranged in the middle of the front side face of the support. Personnel control the clamping mechanism to move up and down and stretch into the steam sterilization equipment to take out the charging tray through the remote controller, steam burn is avoided, and meanwhile the burden of the personnel is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of Chinese herbal medicine processing equipment, in particular to a material tray taking and placing device for Chinese herbal medicine steam sterilization equipment. Background Art

[0002] Chinese herbal medicine is a unique medicine used by traditional Chinese medicine to prevent and treat diseases. It is also an important symbol that distinguishes traditional Chinese medicine from other medical sciences. The efficacy of Chinese herbal medicine is becoming more and more valued in the world today. Chinese acupuncture and Chinese herbal medicine preparation have penetrated into all parts of the world, and the researchability of Chinese medicine gives us a lot of different plasticity.

[0003] Steam sterilization equipment is required for the processing of Chinese herbal medicines. Usually, the material trays containing Chinese herbal medicines are manually placed into the steam sterilization equipment one by one, and the materials are also taken out manually. However, there is still some steam inside the equipment after sterilization, and the material trays have a certain temperature. Manually taking out the material trays may cause burns. At the same time, the material trays are large and it is inconvenient to take them. For this reason, we propose a material tray taking and placing device for Chinese herbal medicine steam sterilization equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a material tray picking and placing device for Chinese herbal medicine steam sterilization equipment. Personnel can control the clamping mechanism to move up and down and reach into the steam sterilization equipment to take out the material tray through a remote control, thereby avoiding steam burns and reducing the burden on personnel, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a material tray picking and placing device for Chinese herbal medicine steam sterilization equipment, comprising a moving platform and a picking and placing mechanism; Mobile platform: The rear side of its upper surface is provided with symmetrically distributed support frames, the upper ends of which are connected with evenly distributed support plates by bolts, the front side of the upper surface of the mobile platform is fixedly connected with left and right symmetrically distributed C-shaped frames, the upper ends of the C-shaped frames are fixedly connected to the lower surface of the lowest support plate, and handrails are provided at both left and right ends of the rear side of the upper surface of the mobile platform; Pick-and-place mechanism: It includes a bracket, a guide rail, a linear slide, a clamping assembly and an extension assembly. A bracket is provided on the rear side of the upper surface of the moving platform, a linear slide is provided in the middle of the front side of the bracket, the left and right ends of the front side of the bracket are fixedly connected with guide rails, a clamping assembly is slidably connected between the two guide rails, the rear side of the clamping assembly is fixedly connected to the sliding platform of the linear slide, extension assemblies are provided on the left and right sides of the front end of the clamping assembly, fixing strips are provided on the relatively inner sides of the front ends of the two extension assemblies, the relatively inner ends of the two fixing strips are connected with front and rear symmetrically distributed clips by bolts, and the support plates are located between the front ends of the two extension assemblies. Personnel control the clamping mechanism to move up and down and reach into the steam sterilization equipment to take out the material tray through a remote control to avoid steam burns and reduce the burden on personnel.

[0006] Furthermore, it also includes a controller, which is arranged on the left side of the moving platform, the input end of the controller is electrically connected to the external power supply, the input end of the linear slide is electrically connected to the output end of the controller, and the control device is electrically connected.

[0007] Furthermore, the clamping assembly includes a slide, a gear 1, a rack plate 1, a slide column and a cover plate, a slide is slidably connected between the two guide rails, the rear side surface of the slide is fixedly connected to the sliding platform of the linear slide, the front side surface of the slide is connected to the cover plate by bolts, the front side surface of the cover plate is provided with evenly distributed avoidance grooves, slide columns are fixedly connected between the upper and lower ends of the left and right inner walls of the slide, and extension components symmetrically distributed on the left and right are slidably connected between the two slide columns, the rear sides of the extension components are respectively slidably connected to the front sides of the cover plate, the rear ends of the extension components respectively pass through adjacent avoidance grooves, the lower ends of the extension components are respectively connected to the front sides of the rack plate 1 by bolts, the middle part of the front side surface of the slide is connected to the gear 1 by a rotating shaft, and the rack plate 1 is meshed with the gear 1 to realize the left and right movement of the base plate.

[0008] Furthermore, the clamping assembly also includes a rack plate slider, and the two rack plate sliders are provided at the opposite outer ends of the two rack plates. The rack plate sliders are respectively slidably connected to the vertically adjacent sliding columns. The rack plate sliders are located between the rear ends of the two extension assemblies, so that the movement of the rack plate is more stable.

[0009] Furthermore, the clamping assembly also includes a motor 1, a worm wheel and a worm. The front end fixed sleeve of the rotating shaft is provided with a worm wheel, and a worm is rotatably connected between the upper and lower inner walls of the slide. The worm is meshingly connected to the worm wheel. The upper surface of the slide is fixedly connected to motor 1, and the output shaft of motor 1 is fixedly connected to the upper end of the worm. The input end of motor 1 is electrically connected to the output end of the controller to realize the rotation of the gear.

[0010] Furthermore, the extension assembly includes a base plate, a connecting plate and a sliding seat, the base plates are respectively slidably connected between the left and right ends of the two sliding columns, the rear side surfaces of the base plates are respectively slidably connected to the front side surfaces of the cover plates, the rear side surfaces of the base plates are each provided with a connecting plate, the rear end of the right connecting plate is connected to the front side surface of the rack plate 1 at the lower end by bolts, the rear end of the left connecting plate is connected to the front side surface of the upper rack plate 1 by bolts, the rear ends of the upper and lower sides of the base plate and the rear end of the connecting plate respectively pass through adjacent avoidance grooves, the rack plate sliders are both located between the rear ends of the two base plates, the front side surfaces of the base plates are each provided with a sliding groove, the outside of the sliding groove is slidably connected to a sliding seat, the relative inner sides of the two sliding seats are connected to fixing strips by bolts, so that the clips can be extended into the interior of the sterilization equipment.

[0011] Furthermore, the extension component also includes rack plate 2, gear 2 and motor 2. The rack plate 2 is respectively arranged on the side of the slide away from the support plate. The upper surface of the slide is fixedly connected with motor 2. The lower end of the output shaft of motor 2 is fixedly sleeved with gear 2. Gear 2 is respectively meshed and connected with rack plate 2 located in the same slide. The input end of motor 2 is electrically connected to the output end of the controller to realize the forward and backward sliding of the slide.

[0012] Furthermore, the extension component also includes a limit plate and a distance sensor. The inner wall of the slide is provided with a limit plate, and the limit plate is located on the front side of the adjacent gear 2. The front end of the inner part of the slide is fixedly connected with a distance sensor. The distance sensors correspond to the front and rear positions of the limit plate on the rear side respectively. The distance sensors are electrically connected to the controller in both directions to prevent the slide from falling off or motor 2 from overloading.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the material tray taking and placing device for Chinese herbal medicine steam sterilization equipment has the following advantages: When the sterilization is completed and the material tray needs to be taken out, the pick-and-place device is pushed to the front of the steam sterilization equipment through the handrail, and the linear slide, motor 1 and motor 2 are controlled by the controller. The sliding platform of the linear slide drives the slide to slide up and down between the two guide rails until the fixed bar is flush with the material tray to be taken out, and the output shaft of motor 1 drives the worm to rotate, and the worm drives the meshing worm wheel to rotate, the rotating shaft rotates, the gear 1 rotates, and the rack plate 1 at the lower end slides to the right on the surface of the sliding column at the lower end through the rack plate slider, and the rack plate 1 at the upper end slides to the left on the surface of the sliding column at the upper end through the rack plate slider, and the rack plate 1 drives the two bottom plates to slide in the direction away from the worm wheel, and the two fixed bars move away from each other, and the output shaft of motor 2 drives the adjacent gear 2 to rotate, and gear 2 moves on the meshing rack plate 2, driving the slide seat in the slide groove. The external slide makes the clamp align with the material tray, and the remote control is used to control the motor 1 to reverse. Similarly, the rack plate 1 drives the two bottom plates to slide in the direction close to the worm gear, and the two fixed bars are close to each other. The clamp is inserted into the front and rear ends of the material tray to clamp the material tray. The distance sensor measures the relative distance with the limit plate on the rear side in real time and feeds back to the controller. When the relative distance between the distance sensor and the limit plate on the rear side reaches the set minimum distance, the controller no longer responds to the control command of the motor 2 to avoid the slide falling off or the motor 2 overloading. The material tray is placed on the upper surface of the support plate, and the material tray is taken out in turn and placed on the upper surface of each support plate. The whole process does not require the personnel's arms to enter the sterilization equipment, which greatly improves the safety of Chinese herbal medicine steam sterilization. At the same time, the burden of Chinese herbal medicine steam sterilization is reduced by mechanically clamping the material tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is an enlarged structural schematic diagram of location A of the present invention; Figure 4 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0015] In the figure: 1 moving table, 2 pick-and-place mechanism, 21 bracket, 22 guide rail, 23 linear slide, 24 clamping assembly, 241 slide, 242 motor 1, 243 rack plate slider, 244 worm, 245 worm wheel, 246 gear 1, 247 rack plate 1, 248 slide column, 249 cover plate, 25 extension assembly, 251 bottom plate, 252 connecting plate, 253 slide seat, 254 rack plate 2, 255 gear 2, 256 motor 2, 257 limit plate, 258 distance sensor, 3 support frame, 4 support plate, 5 armrest, 6 controller, 7 fixing bar, 8 clamp, 9 C-type frame. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-4 , This embodiment provides a technical solution: a material tray picking and placing device for Chinese herbal medicine steam sterilization equipment, comprising a moving platform 1 and a picking and placing mechanism 2; The mobile platform 1: the rear side of the upper surface thereof is provided with symmetrically distributed support frames 3, the upper ends of the support frames 3 are connected with evenly distributed support plates 4 by bolts, the front side of the upper surface of the mobile platform 1 is fixedly connected with left and right symmetrically distributed C-shaped frames 9, the upper ends of the C-shaped frames 9 are fixedly connected to the lower surface of the lowest support plate 4, and the left and right ends of the rear side of the upper surface of the mobile platform 1 are provided with handrails 5; The pick-and-place mechanism 2 includes a bracket 21, a guide rail 22, a linear slide 23, a gripping assembly 24, and an extension assembly 25. The rear side of the upper surface of the mobile platform 1 is provided with a bracket 21, and the middle part of the front side of the bracket 21 is provided with a linear slide 23. The left and right ends of the front side of the bracket 21 are fixedly connected with the guide rail 22, and the gripping assembly 24 is slidably connected between the two guide rails 22. The rear side of the gripping assembly 24 is fixedly connected to the sliding platform of the linear slide 23, and the left and right sides of the front end of the gripping assembly 24 are An extension assembly 25 is provided, and the opposite inner side surfaces of the front ends of the two extension assemblies 25 are provided with fixing bars 7, and the opposite inner side ends of the two fixing bars 7 are connected with clips 8 symmetrically distributed front and back through bolts, and the support plates 4 are located between the front ends of the two extension assemblies 25. The linear slide 23, the motor 1 242 and the motor 2 256 are controlled by the controller, and the sliding platform of the linear slide 23 drives the slide 241 to slide up and down between the two guide rails 22 until the fixing bar 7 is flush with the material tray to be taken out; The gripping assembly 24 includes a slide 241, a gear 246, a rack plate 247, a slide post 248 and a cover plate 249. The slide 241 is slidably connected between the two guide rails 22. The rear side of the slide 241 is fixedly connected to the sliding platform of the linear slide 23. The front side of the slide 241 is connected to the cover plate 249 by bolts. The front side of the cover plate 249 is provided with evenly distributed avoidance grooves. The slide posts 248 are fixedly connected between the upper and lower ends of the left and right inner walls of the slide 241. The two slide posts 248 are slidably connected with the extension grooves symmetrically distributed on the left and right. The rear side of the extension component 25 is respectively slidably connected to the front side of the cover plate 249, and the rear end of the extension component 25 passes through the adjacent avoidance grooves. The lower end of the extension component 25 is respectively connected to the front side of the rack plate 247 by bolts. The middle part of the front side of the slide 241 is connected to the gear 246 through a rotating shaft. The rack plates 247 are meshed with the gear 246. The clamping component 24 also includes a rack plate slider 243. The two rack plates 247 are provided with a rack plate slider 243 at the opposite outer ends. The rack plate slider 243 The rack plate slider 243 is respectively slidably connected with the vertically adjacent sliding column 248, and the rack plate slider 243 is located between the rear ends of the two extension components 25. The clamping component 24 also includes a motor 242, a worm gear 245 and a worm 244. The front end of the rotating shaft is fixedly sleeved with a worm gear 245. The worm 244 is rotatably connected between the upper and lower inner walls of the slide 241. The worm 244 is meshed with the worm gear 245. The upper surface of the slide 241 is fixedly connected with a motor 242. The output shaft of the motor 242 is fixedly connected to the upper end of the worm 244. The input end of the motor 242 The output end of the controller 6 is electrically connected, the output shaft of the motor 242 drives the worm 244 to rotate, the worm 244 drives the meshing worm wheel 245 to rotate, the shaft rotates, the gear 246 rotates, the rack plate 247 at the lower end slides to the right on the surface of the sliding column 248 at the lower end through the rack plate slider 243, and the rack plate 247 at the upper end slides to the left on the surface of the sliding column 248 at the upper end through the rack plate slider 243, the rack plate 247 drives the two bottom plates 251 to slide in the direction away from the worm wheel 245, and the two fixed bars 7 move away from each other; The extension assembly 25 includes a bottom plate 251, a connecting plate 252 and a slide seat 253. The bottom plate 251 is slidably connected between the left and right ends of the two slide posts 248. The rear side of the bottom plate 251 is slidably connected to the front side of the cover plate 249. The rear side of the bottom plate 251 is provided with a connecting plate 252. The rear end of the right connecting plate 252 is connected to the front side of the rack plate 247 at the lower end by bolts. The rear end of the left connecting plate 252 is connected to the front side of the rack plate 247 at the upper end by bolts. The rear ends of the upper and lower sides of the bottom plate 251 and the connecting plate are connected. The rear ends of the plates 252 respectively pass through the adjacent avoidance grooves, the rack plate sliders 243 are located between the rear ends of the two bottom plates 251, the front sides of the bottom plates 251 are provided with slide grooves, the outsides of the slide grooves are slidably connected with slide seats 253, the opposite inner sides of the two slide seats 253 are connected with fixing strips 7 by bolts, the extension assembly 25 also includes a rack plate 254, a gear 255 and a motor 256, the rack plate 254 is respectively arranged on the side of the slide groove away from the support plate 4, the upper surface of the slide seat 253 is fixedly connected with a motor 256, and the motor 25 The lower end of the output shaft of 6 is fixedly sleeved with a gear 255, and the gear 255 is respectively meshed with the rack plate 254 located in the same slide slot. The input end of the motor 256 is electrically connected to the output end of the controller 6. The extension component 25 also includes a limit plate 257 and a distance sensor 258. The inner wall of the slide seat 253 is provided with a limit plate 257, and the limit plate 257 is located at the front side of the adjacent gear 255. The front end of the inner part of the slide slot is fixedly connected with a distance sensor 258, and the distance sensor 258 is respectively connected to the front of the limit plate 257 at the rear side. Corresponding to the rear position, the distance sensors 258 are bidirectionally electrically connected to the controller 6, the output shafts of the motor 256 respectively drive the adjacent gear 255 to rotate, the gear 255 moves on the meshing rack plate 254, drives the slide 253 to slide outside the slide groove, so that the clamp 8 is aligned with the material tray, and the remote control 6 controls the motor 1 242 to reverse. Similarly, the rack plate 1 247 respectively drives the two bottom plates 251 to slide in the direction close to the worm gear 245, and the two fixing bars 7 approach each other, and the clamp 8 is inserted into the front and rear ends of the material tray to achieve the clamping of the material tray.

[0018] Wherein: it also includes a controller 6, which is arranged on the left side of the moving platform 1, the input end of the controller 6 is electrically connected to the external power supply, and the input end of the linear slide 23 is electrically connected to the output end of the controller 6.

[0019] The working principle of the tray picking and placing device for Chinese herbal medicine steam sterilization equipment provided by the present invention is as follows: the Chinese herbal medicine to be steam sterilized is placed in the tray, and then the trays are placed in the steam sterilization equipment for sterilization. When the sterilization is completed and the tray needs to be taken out, the picking and placing device is pushed to the front of the steam sterilization equipment through the handrail 5, and the linear slide 23, motor 1 242 and motor 2 256 are controlled by the controller. The sliding platform of the linear slide 23 drives the slide 241 to move up and down between the two guide rails 22. The rack plate 247 at the lower end slides to the right on the surface of the sliding column 248 at the lower end through the rack plate slider 243, and the rack plate 247 at the upper end slides to the left on the surface of the sliding column 248 at the upper end through the rack plate slider 243, and the rack plate 247 drives the two bottom plates 247 to rotate respectively. 51 slides in the direction away from the worm gear 245, the two fixed bars 7 move away from each other, the output shaft of the motor 256 drives the adjacent gear 255 to rotate, the gear 255 moves on the meshing rack plate 254, drives the slide 253 to slide outside the slide slot, and makes the clip 8 align with the material tray, and the motor 1 242 is controlled to reverse through the remote control 6. Similarly, the rack plate 1 247 drives the two bottom plates 251 to slide in the direction close to the worm gear 245, the two fixed bars 7 move close to each other, and the clip 8 is plugged into the front and rear ends of the material tray to achieve clamping of the material tray. The distance sensor 258 measures the relative distance to the limit plate 257 on the rear side in real time and feeds back to the controller 6. When the relative distance between the distance sensor 258 and the limit plate 257 on the rear side reaches the set minimum distance, the controller 6 no longer responds to the control command to the motor 256 to avoid the slide 253 falling off or the motor 256 overloading. The material tray is placed on the upper surface of the support plate 4, and the material tray is taken out in turn and placed on the upper surface of each support plate 4.

[0020] It is worth noting that the controller 6 disclosed in the above embodiments can use a DVP32EH PLC controller, the linear slide 23 can use a RYK80 linear slide, the motor 1 242 can use a 5GU-30K motor, the motor 2 256 can use a GH32 reduction motor, and the distance sensor 258 can use an LTP080 distance sensor. The controller 6 controls the linear slide 23, motor 1 242, motor 2 256 and distance sensor 258 using methods commonly used in the prior art.

[0021] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tray picking and placing device for Chinese herbal medicine steam sterilization equipment, characterized in that: It comprises a moving platform (1) and a pick-and-place mechanism (2); A mobile platform (1): a rear side of the upper surface of the mobile platform (1) is provided with symmetrically distributed support frames (3), the upper ends of the support frames (3) are connected to evenly distributed support plates (4) by bolts, the front side of the upper surface of the mobile platform (1) is fixedly connected to a left-right symmetrically distributed C-shaped frame (9), the upper ends of the C-shaped frame (9) are fixedly connected to the lower surface of the lowest support plate (4), and handrails (5) are provided at both left and right ends of the rear side of the upper surface of the mobile platform (1); The pick-and-place mechanism (2) comprises a bracket (21), a guide rail (22), a linear slide (23), a clamping assembly (24) and an extension assembly (25). The bracket (21) is provided on the rear side of the upper surface of the movable platform (1). The linear slide (23) is provided in the middle of the front side of the bracket (21). The left and right ends of the front side of the bracket (21) are fixedly connected with the guide rail (22). The clamping assembly (24) is slidably connected between the two guide rails (22). The rear side of the clamping assembly (24) is fixedly connected to the sliding platform of the linear slide (23). The left and right sides of the front end of the clamping assembly (24) are both provided with extension assemblies (25). The opposite inner sides of the front ends of the two extension assemblies (25) are both provided with fixing bars (7). The opposite inner ends of the two fixing bars (7) are both connected with front and rear symmetrically distributed clips (8) by bolts. The support plates (4) are both located between the front ends of the two extension assemblies (25).

2. The material tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 1 is characterized in that: It also includes a controller (6), which is arranged on the left side of the moving platform (1), the input end of the controller (6) is electrically connected to an external power supply, and the input end of the linear slide (23) is electrically connected to the output end of the controller (6).

3. The material tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 2 is characterized in that: The clamping assembly (24) comprises a slide (241), a gear (246), a rack plate (247), a slide column (248) and a cover plate (249). The slide (241) is slidably connected between the two guide rails (22). The rear side of the slide (241) is fixedly connected to the sliding platform of the linear slide (23). The front side of the slide (241) is connected to the cover plate (249) by bolts. The front side of the cover plate (249) is provided with evenly distributed avoidance grooves. The upper and lower ends of the left and right inner walls of the slide (241) are fixedly connected. A slide column (248) is connected, and extension components (25) symmetrically distributed on the left and right are slidably connected between the two slide columns (248). The rear side surfaces of the extension components (25) are slidably connected to the front side surfaces of the cover plate (249), and the rear ends of the extension components (25) pass through adjacent avoidance grooves. The lower ends of the extension components (25) are respectively connected to the front side surfaces of the rack plate 1 (247) by bolts. The middle part of the front side surface of the slide table (241) is connected to the gear 1 (246) by a rotating shaft, and the rack plate 1 (247) is meshed with the gear 1 (246).

4. The tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 3 is characterized in that: The clamping assembly (24) further comprises a rack plate slider (243), and the two rack plate sliders (243) are provided at the opposite outer ends of the two rack plates (247), and the rack plate sliders (243) are respectively slidably connected to the vertically adjacent sliding columns (248), and the rack plate sliders (243) are located between the rear ends of the two extension assemblies (25).

5. The tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 3 is characterized in that: The gripping assembly (24) further comprises a motor 1 (242), a worm gear (245) and a worm (244); the front end of the rotating shaft is fixedly sleeved with a worm gear (245); the worm gear (244) is rotatably connected between the upper and lower inner walls of the slide (241); the worm gear (244) is meshingly connected to the worm gear (245); the upper surface of the slide (241) is fixedly connected to the motor 1 (242); the output shaft of the motor 1 (242) is fixedly connected to the upper end of the worm gear (244); and the input end of the motor 1 (242) is electrically connected to the output end of the controller (6).

6. The material tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 4 is characterized in that: The extension assembly (25) comprises a bottom plate (251), a connecting plate (252) and a sliding seat (253). The bottom plate (251) is slidably connected between the left and right ends of the two sliding columns (248). The rear side surface of the bottom plate (251) is slidably connected to the front side surface of the cover plate (249). The rear side surface of the bottom plate (251) is provided with a connecting plate (252). The rear end of the right connecting plate (252) is connected to the front side surface of the rack plate (247) at the lower end by bolts. The rear end of the connecting plate (252) is connected to the front side of the rack plate (247) at the upper end by bolts, the rear ends of the upper and lower sides of the bottom plate (251) and the rear end of the connecting plate (252) respectively pass through the adjacent avoidance grooves, the rack plate sliders (243) are located between the rear ends of the two bottom plates (251), the front side of the bottom plate (251) is provided with a slide groove, the outside of the slide groove is slidably connected to a slide seat (253), and the opposite inner sides of the two slide seats (253) are connected to a fixing strip (7) by bolts.

7. The material tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 6, characterized in that: The extension assembly (25) further comprises a rack plate 2 (254), a gear 2 (255) and a motor 2 (256). The rack plate 2 (254) is respectively arranged on a side of the slide away from the support plate (4). The upper surface of the slide seat (253) is fixedly connected with the motor 2 (256). The lower end of the output shaft of the motor 2 (256) is fixedly sleeved with the gear 2 (255). The gear 2 (255) is respectively meshed and connected with the rack plate 2 (254) located in the same slide slot. The input end of the motor 2 (256) is electrically connected to the output end of the controller (6).

8. The material tray taking and placing device for Chinese herbal medicine steam sterilization equipment according to claim 7, characterized in that: The extension assembly (25) further comprises a limit plate (257) and a distance sensor (258). The inner wall of the slide seat (253) is provided with a limit plate (257). The limit plates (257) are located at the front side of the adjacent gear 2 (255). The front end of the interior of the slide slot is fixedly connected with a distance sensor (258). The distance sensor (258) corresponds to the front and rear positions of the limit plate (257) at the rear side, respectively. The distance sensor (258) is bidirectionally electrically connected to the controller (6).

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