A feeding device compatible with multi-size capped test tubes

Abstract

This utility model discloses a feeding device compatible with capped test tubes of various sizes. It includes: a variable-pitch assembly mounted on a mounting platform, comprising a first variable-pitch plate and a second variable-pitch plate slidably connected along the X-direction, the first and second variable-pitch plates being spaced apart from each other; two linear transmission mechanisms respectively connected to the first and second variable-pitch plates, the gap between the two linear transmission mechanisms forming a feeding channel for supporting the capped test tubes; and an upper limit plate, its bottom surface connected to either the first or second variable-pitch plate, its top surface located above the feeding channel, and an appropriate gap between the inner wall of its top surface and the top of the capped test tubes in the feeding channel. This utility model achieves both appearance-free feeding of test tubes of different sizes and efficient connection with upstream and downstream equipment.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a feeding device compatible with multi-size capped test tubes. Background Technology

[0002] With the rapid development of my country's medical testing and in vitro diagnostics industry, the market demand for tubular medical devices such as reagent tubes and serum tubes continues to grow. These products typically require large-scale, high-efficiency mass production and packaging. To ensure the airtightness and safety of the reagents or samples inside the tubes, most test tubes are fitted with specially designed caps at the top opening.

[0003] In the subsequent packaging and traying process for these capped test tubes, the workflow typically includes automatic tube feeding, sorting and arranging into rows, and picking up and traying by grippers. Among these, the efficiency and reliability of automatic tube feeding is one of the key factors determining the overall packaging and traying efficiency.

[0004] Currently, some patented technologies are dedicated to solving the problem of automated test tube feeding. For example, Chinese patent CN216460227 U discloses an automatic conveying device for test tube sorting, which can realize the automatic feeding of test tube samples one by one. However, its conveying line requires a test tube fixture of a specific size to load and fix the test tubes. This means that once the test tube specifications change, the corresponding fixture needs to be replaced, which is not flexible enough and increases the changeover time and cost. In addition, the posture and spacing of the output test tubes may not be convenient for subsequent direct sorting of tubes into rows. Chinese patent CN 115009814 A discloses a disordered feeding device applicable to test tubes of various diameters. It uses two parallel first and second conveying stations to accommodate test tubes of different diameters. Although this design improves the adaptability of the equipment to test tubes of different diameters to a certain extent, its overall structure is complex, increasing the manufacturing cost and maintenance difficulty of the equipment. In addition, the specific feeding method used has the risk of scratching the outer surface of the test tubes and damaging the caps, which may affect the appearance quality of the product and even lead to a decrease in sealing performance. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a feeding device compatible with multi-size capped test tubes, which can achieve undamaged feeding of test tubes of different sizes while being able to efficiently connect with upstream and downstream equipment.

[0006] The technical solution of this utility model is:

[0007] A feeding device compatible with multi-size capped test tubes, characterized in that it includes a component mounted on a mounting platform:

[0008] A pitch control assembly includes a first pitch control plate and a second pitch control plate that are slidably connected along the X direction, with the first pitch control plate and the second pitch control plate being arranged at a relative interval.

[0009] Two linear transmission mechanisms are respectively connected to the first and second pitch plates, and the gap between the two linear transmission mechanisms forms a feeding channel for supporting capped test tubes.

[0010] The upper limit plate has its bottom surface connected to the first or second variable distance plate, its top surface located above the feeding channel, and an appropriate gap is provided between the inner wall of its top surface and the top of the capped test tube in the feeding channel.

[0011] Furthermore, the pitch control component also includes:

[0012] A plurality of variable pitch slide rails are fixedly mounted on the mounting platform at intervals along the Y direction. The first variable pitch plate is slidably connected to one end of the plurality of variable pitch slide rails, and the second variable pitch plate is slidably connected to the other end of the plurality of variable pitch slide rails.

[0013] Two hand-cranked screw modules are installed with their fixed ends on the two opposite sides of the mounting platform, and their output ends are respectively connected to the first pitch plate and the second pitch plate. Rotating the hand-cranked screw module drives the first pitch plate and the second pitch plate to move synchronously towards or away from each other.

[0014] Furthermore, the first and second pitch plates are characterized by having a plurality of locking holes spaced apart along the X direction on both sides along the Y direction.

[0015] Both ends of the first and second pitch plates along the Y direction are provided with a locking assembly, and the locking assembly includes a locking plate and a locking bolt;

[0016] Two locking plates are respectively vertically fixed on both sides of the mounting platform along the Y direction, and the ends of the first and second variable pitch plates are respectively set opposite to the two locking plates;

[0017] Each locking plate has two elongated adjustment holes spaced apart along the X direction at its upper end. The front end of the locking bolt passes through the adjustment holes and stops in the corresponding locking hole on the first or second pitch plate.

[0018] Furthermore, the feature is that a bracket plate is installed on both the first and second pitch plates, and the fixing part of each linear transmission mechanism is installed on the corresponding bracket plate.

[0019] Each of the linear transmission mechanisms is a chain conveyor mechanism, which includes a rotary drive motor, a drive wheel, a driven wheel, and a transmission chain plate surrounding the drive wheel and the driven wheel;

[0020] The feeding trough is formed by the upper surfaces of two opposing drive chain plates, and the upper surface of each drive chain plate is provided with anti-slip texture.

[0021] Furthermore, the feature is that an inlet chamber is provided at the inlet end of the feeding trough.

[0022] The inlet chamber has a U-shaped inner cavity, and each of its left and right top surfaces facing the transmission chain plate has an arc-shaped clearance opening. The arc-shaped part of each transmission chain plate located at the inlet end is movably accommodated at the corresponding arc-shaped clearance opening, so that the top surface of the arc-shaped part of the transmission chain plate forms a flat plane with the top surface of the inlet chamber. The U-shaped inner cavity of the inlet chamber is connected to the feeding channel.

[0023] Furthermore, the feature is that two guide plates are provided opposite each other at the outlet end of the feeding trough, each guide plate includes a guide plate bottom plate, one end of the guide plate bottom plate extends vertically upward to form a guide plate side plate, and the guide plate side plate has an arc-shaped clearance opening at the end facing the transmission chain plate.

[0024] The guide plate base plates of the two output plates are respectively fixed to the two sides of the outlet end, and the arc-shaped part of each transmission chain plate at the outlet end is movably accommodated at the corresponding arc-shaped clearance opening, so that the top surface of the arc-shaped part of the transmission chain plate and the top surface of the output plate form a flat plane.

[0025] Furthermore, the upper limit plate is characterized in that one end of the upper limit plate located at the inlet end of the feeding channel is folded upwards to form a guide slope.

[0026] Furthermore, the feature is that a bottom plate is provided below the feeding channel, the bottom end of the bottom plate is connected to the first variable distance plate or the second variable distance plate, the top surface of the bottom plate is a flat plate, which is located below the feeding channel, and an appropriate gap is provided between the bottom surface of the capped test tube in the feeding channel and the top surface of the bottom plate.

[0027] Furthermore, the bottom plate of the trough is folded downwards at one end of the inlet end of the feeding trough to form a bottom plate slope.

[0028] Furthermore, a channel side plate is provided on each side of the inlet bin to the two outlet plate sections along the conveying direction of the feeding channel. Each channel side plate includes a mounting part, which is folded upward and extended towards the feeding channel to form a baffle. The mounting part of each channel side plate is correspondingly installed on the fixing part of the two linear transmission mechanisms. The baffle of each channel side plate is adjacent to the outer side of both sides of the inlet bin to the outlet plate section.

[0029] The beneficial technical effects of this utility model are:

[0030] 1. Compared with the prior art, the present invention can adjust the distance between the first and second variable distance plates by means of a variable distance component, thereby changing the width of the feeding channel, making it compatible with capped test tubes of different sizes, significantly reducing downtime caused by product changeovers, and improving equipment utilization and production flexibility.

[0031] 2. The design of the bottom plate, side plate, and upper limit plate further ensures the stability of the material conveying process in the feeding channel; and the capped test tubes are conveyed vertically suspended on the feeding channel, which effectively avoids scratches caused by friction between the capped test tubes and other parts, and ensures the appearance quality of the product.

[0032] 3. The inlet end of the feeding trough is equipped with an inlet bin, and the outlet end is equipped with an outlet plate, which transforms the arc-shaped structure of the transmission chain plate into a regular rectangle, reducing the precision required for docking with upstream and downstream equipment, and helping to improve the overall automation level and production efficiency. Attached Figure Description

[0033] Figure 1 This is an overall schematic diagram of the present invention when fully loaded with capped test tubes;

[0034] Figure 2 This is an overall schematic diagram of the present invention when unloaded;

[0035] Figure 3 This is an enlarged view of the inlet end of the feeding chute;

[0036] Figure 4 This is a schematic diagram of the present invention after removing the upper limit plate and the channel side plate;

[0037] Figure 5 yes Figure 4 Enlarged view of the outlet end of the feed chute;

[0038] Figure 6 This is a schematic diagram of the variable pitch assembly;

[0039] Figure 7 This is a diagram of the import container;

[0040] Figure 8 This is a schematic diagram of the import compartment from another angle;

[0041] Figure 9 This is a schematic diagram of the export board;

[0042] Figure 10 This is a diagram of a test tube with a cap.

[0043] in:

[0044] 000, Capped test tube; 001, Cap; 100, Mounting platform; 101, Connecting plate; 102, Support plate; 201, Variable pitch slide rail; 202, First variable pitch plate; 203, Second variable pitch plate; 204, Hand-cranked screw module; 205, Locking hole; 301, Locking bolt; 302, Locking plate; 3021, Adjusting hole; 400, Linear transmission mechanism; 401, Rotary drive motor; 402, Transmission chain plate ; 403, Feeding trough; 4031, Inlet end; 4032, Outlet end; 404, Bottom plate of the trough; 4041, Bottom plate slope; 405, Upper limit plate; 4051, Guide slope; 406, Side plate of the trough; 4061, Stop bar; 500, Inlet chamber; 501, Arc-shaped clearance opening; 502, Fixing plate; 600, Outlet plate; 601, Guide plate bottom plate; 602, Guide plate side plate; 700, Through-beam sensor. Detailed Implementation

[0045] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0046] like Figures 1-9 As shown, this utility model provides a feeding device compatible with multi-size capped test tubes, applied to the linear transport of capped test tubes. Among them, as... Figure 10 As shown, the capped test tube 000 to be loaded and transported is a long tubular structure with a cap 001 sealed on its top. The diameter of the upper end of the cap 001 is smaller than the diameter of its bottom end, and the diameter of the bottom end of the cap 001 is larger than the diameter of the tube body of the reagent tube 000.

[0047] The feeding device of this utility model includes a mounting platform 100. In order to make the feeding channel 403 of this utility model compatible with capped test tubes of various sizes, the mounting platform 100 is provided with a pitch-changing component. The pitch-changing component includes several pitch-changing slide rails 201, a first pitch-changing plate 202, a second pitch-changing plate 203, and two hand crank screw modules 204.

[0048] On the mounting platform, several mutually and equidistantly distributed variable-pitch slide rails 201 are fixed along its length (Y direction), and the length of each variable-pitch slide rail 201 extends along the X direction. In this utility model, a total of four variable-pitch slide rails 201 are provided. One end of all variable-pitch slide rails 201 is slidably connected to a first variable-pitch plate 202 along the X direction via a slider, and the other end of all variable-pitch slide rails 201 is slidably connected to a second variable-pitch plate 203 along the X direction via a slider.

[0049] To achieve synchronous, opposite-facing or opposite-facing movements of the first pitch plate 202 and the second pitch plate 203, and to ensure that the centerline position remains unchanged during adjustment, a connecting plate 101 is fixedly attached to the middle of each of the two sides along the Y-axis of the mounting platform. The fixed ends of the two hand-cranked screw modules 204 are respectively mounted on the corresponding connecting plate 101. The output end of each hand-cranked screw module 204 passes through the corresponding connecting plate 101 and connects to the middle end of the first pitch plate 202 and the second pitch plate 203. When either hand-cranked screw module 204 is rotated clockwise or counterclockwise, the first pitch plate 202 and the second pitch plate 203 can be precisely driven to move closer or further apart along the pitch slide rail 201 in a linear motion. This design ensures the smoothness of the adjustment process.

[0050] Preferably, to prevent the pitch position of the equipment from shifting during vibration or long-term operation and to ensure the long-term reliability of the capped test tube 000, a locking component is provided at both ends of the first pitch plate 202 and the second pitch plate 203 along the Y direction.

[0051] Each locking assembly includes a locking bolt 301 and a locking plate 302. Each locking plate 302 is a rectangular plate with two elongated adjustment holes 3021 symmetrically opened at its upper end along the X direction. The length of each adjustment hole 3021 is opened along the X direction, and its length determines the maximum adjustable stroke range of the first variable pitch plate 202 and the second variable pitch plate 203. A locking bolt 301 is provided in each adjustment hole 3021.

[0052] To cooperate with the locking assembly, two locking holes 205 are symmetrically provided on both sides of the first pitch plate 202 and the second pitch plate 203 along the Y direction, and the distance between the two locking holes 205 on the same side of the first pitch plate 202 and the two locking holes 205 on the same side of the second pitch plate 203 is not greater than the length of their corresponding adjustment holes 3021.

[0053] To avoid redundancy, we will now use the example of connecting the locking assembly at one end of the first pitch plate 202 and the second pitch plate 203 along the Y direction as an example. The connection relationship of the locking assembly at the other end can be referred to and applied accordingly.

[0054] Each locking plate 302 is vertically connected to one side of the mounting platform 100 along the Y direction. The adjustment hole 3021 on one side of the locking plate 302 corresponds to the two locking holes 205 on the same side of the first pitch plate 202, and the adjustment hole 3021 on the other side of the locking plate 302 corresponds to the two locking holes 205 on the same side of the second pitch plate 203. When the hand-cranked screw module 204 drives the first pitch plate 202 and the second pitch plate 203 to their X-direction pitch positions, the front end of the locking bolt 301 passes through each adjustment hole 3021 and stops in the corresponding locking holes 205 on the first pitch plate 202 and the second pitch plate 203, thus fixing the pitched positions of the first pitch plate 202 and the second pitch plate 203.

[0055] To install other components, several bracket plates 102 are installed along the Y direction on the upper surfaces of the first pitch plate 202 and the second pitch plate 203. Each bracket plate 102 is set perpendicular to the first pitch plate 202 and the second pitch plate 203.

[0056] The top surfaces of all the support plates 102 on the first pitch plate 202 are fixedly connected to a linear transmission mechanism 400 with the driving direction along the Y direction. The top surfaces of all the support plates 102 on the second pitch plate 203 are fixedly connected to another linear transmission mechanism 400. The two linear transmission mechanisms 400 are in the same direction, parallel to each other, and maintain a certain relative distance.

[0057] In this utility model, each linear transmission mechanism 400 is a chain plate conveying mechanism, including a rotary drive motor 401, a drive wheel, a driven wheel, and a transmission chain plate 402 that tightly surrounds the drive wheel and the driven wheel to form a closed loop; in addition, in order to facilitate the installation of other components, each linear transmission mechanism 400 is covered with sheet metal parts on the upper and lower sides between the drive wheel and the driven wheel. This is prior art and will not be described in detail here.

[0058] In this utility model, the upper surface of each transmission chain plate 402 is designed with anti-slip texture. The gap between the two transmission chain plates 402 that are arranged at intervals constitutes the feeding channel 403. The width of the feeding channel 403 is suitable for the tube diameter of a capped test tube 000. It can just accommodate the tube body of a capped test tube 000, but is smaller than the bottom diameter of its cap 001.

[0059] In this utility model, the side where the two rotary drive motors 401 are located is the inlet end 4031 of the feeding channel 403, and the other end is its outlet end 4032; when each capped test tube 000 is manually placed or automatically introduced into the feeding channel 403 from the inlet end, the two sides of the bottom surface of its cap 001 are reliably abutted against the upper surface of the two transmission chain plates 402 respectively, and the tube body of the capped test tube 000 is suspended in the feeding channel 403;

[0060] At the same time, two rotary drive motors 401 are started, which drive their respective drive wheels to rotate, thereby driving the two transmission chain plates 402 to move smoothly at the same speed and direction. The capped test tubes 000 placed in the feeding channel 403 rely on the friction between the bottom surface of their caps and the upper surface of the transmission chain plates 402 to move synchronously with the transmission chain plates 402 along the Y direction.

[0061] When different sizes of capped test tubes are to be used, rotate either the hand crank screw module 204 clockwise or counterclockwise to drive the first pitch plate 202 and the second pitch plate 203 to move closer or further apart along the pitch slide rail 201, so as to adjust the width of the feeding channel 403 according to the cap size and tube diameter of the specific capped test tube.

[0062] As a preferred embodiment, to prevent material from falling, a bottom plate 404 is also provided below the feeding channel 403. The bottom plate 404 has a "7" shaped cross-section, and its length extends along the conveying direction (i.e., the Y direction). Its bottom surface is fixed to the first variable distance plate 202 or the second variable distance plate 203, and its top surface is a flat plate located below the feeding channel 403. When the capped test tube 000 is suspended in the feeding channel 403, the bottom end of the capped test tube 000 is located above the top surface of the bottom plate 404, and there is an appropriate gap between the two. This ensures that the bottom end of the capped test tube will not come into contact with or rub against the bottom plate 404 under any operating conditions, such as chain plate vibration, thus avoiding scratching the capped test tube and ensuring the product appearance quality. It also provides reliable physical support in case the capped test tube falls accidentally.

[0063] Preferably, the bottom plate 404 is folded downward at a small angle at one end of the inlet end 4031 of the feeding channel 403 to form a bottom plate slope 4041, so as to facilitate the introduction of capped test tubes.

[0064] In actual continuous production and transportation processes, because each transmission chain plate 402 is a closed ring structure, the inlet and outlet ends of the feeding channel 403 exhibit an inherent arc transition state. While this arc-shaped port facilitates smooth transmission of the transmission chain plate, it is not conducive to achieving precise and smooth linear docking with upstream and downstream equipment. Specifically:

[0065] At the inlet end, it is not conducive to the upstream output mechanism (not shown) accurately and reliably guiding the capped test tube 000 to the inlet end of the feeding channel 403 in a straight line; at the outlet end, it is not conducive to directly outputting the capped test tubes that have completed the conveying to the downstream tube handling mechanism (not shown) in a stable and consistent manner.

[0066] To solve this technical problem and achieve seamless and efficient connection with upstream and downstream equipment, this utility model has an inlet bin 500 installed at the inlet end of the feeding channel 403 and a corresponding outlet plate 600 installed at its outlet end.

[0067] The inlet chamber 500 has a U-shaped inner cavity, that is, it is open at both ends and on the top surface along the Y direction, and its U-shaped inner cavity has the same inner diameter as the feeding channel 403. Furthermore, in order to avoid and connect the arc-shaped structure formed by the inherent circular motion trajectory of the transmission chain plate at the inlet end, an arc-shaped clearance opening 501 is provided on the top surface of the left and right sides of the inlet chamber 500 on the side facing the transmission chain plate 402. Since the two transmission chain plates 402 are arranged opposite each other, the two arc-shaped clearance openings 501 are arranged in a mirror image.

[0068] To install the inlet chamber 500, a fixing plate 502 is vertically fixed to the bottom of each of its left and right sides. Each fixing plate 502 is fixed to the sheet metal part at the bottom of the corresponding rotary drive motor 401 by bolts, so that the inlet chamber 500 can be engaged inside the inlet end of the feeding channel 403. That is, the arc-shaped part of each transmission chain plate 402 at the inlet end of the feeding channel 403 is exactly located at the corresponding arc-shaped clearance opening 501, so that when the transmission chain plate 402 is in motion, the arc-shaped part of each transmission chain plate 402 at the inlet end can connect with the top surface of the inlet chamber 500 to form a flat plane in the same horizontal plane. The U-shaped inner cavity of the inlet chamber and the feeding channel form a continuous and smooth transition channel, which also makes the inlet end of the feeding channel 403 a regular rectangular opening.

[0069] Each capped test tube 000 is first placed manually or guided into the inlet chamber 500 by the upstream automated output mechanism. At this time, the two sides of the bottom surface of the cap 001 of the capped test tube 000 are reliably abutted against the top surfaces of the two sides of the inlet chamber 500, while the tube body of the capped test tube 000 hangs in the inlet chamber 500 without contacting the bottom surface of the inlet chamber 500. Then, the capped test tube 000 smoothly and naturally transitions from the inlet chamber 500 into the feeding channel 403 formed by the continuously running transmission chain plate, either under the pushing force of the next capped test tube that is continuously output or with the help of other auxiliary guiding mechanisms (such as slight pushing), thereby achieving a smooth transition of materials with zero jamming.

[0070] As a preferred option, the top surfaces on both sides of the inlet chamber 500, at the end away from the feeding channel 403, also have a sloping surface to further facilitate the introduction of the capped test tubes 000.

[0071] Two guide plates 600 are mirror-symmetrically arranged at the outlet end of the feeding trough 403. Each guide plate 600 includes a long strip-shaped guide plate base plate 601, and a guide plate side plate 602 extends vertically upward from one end of the guide plate base plate 601. In order to avoid and connect the arc-shaped structure formed by the inherent circular motion trajectory of the transmission chain plate at the outlet end, an arc-shaped clearance opening 501 is also opened on the top surface of each guide plate side plate 602 facing the outlet end of the feeding trough 403. Since the two transmission chain plates are arranged opposite each other, the two arc-shaped clearance openings 501 of the two guide plates 600 are also designed to be symmetrical from left to right.

[0072] Two guide plates 600 are installed at a distance from each other at the outlet end of the feeding channel 403. The guide plate base plates 601 of the two guide plates 600 are parallel to the horizontal plane and are respectively installed on the sheet metal of the lower side of the two linear transmission mechanisms by screws. The guide plate side plates 602 of the two guide plates 600 are close to the arc-shaped outer side of the outlet end of the corresponding side transmission chain plate 402. At this time, the arc-shaped part of the outlet end of each transmission chain plate 402 is exactly located in the corresponding arc-shaped relief opening 501. Thus, the top surface of the arc-shaped part of the two guide plate side plates 602 and the transmission chain plate 402 together form a regular rectangular outlet, and the width of the outlet is consistent with the effective width of the feeding channel 403, thereby ensuring the continuity of the material conveying path. The design of the two guide plates 600 enables the capped test tubes to smoothly and consistently detach from the feeding channel 403 and ensure that they can be reliably received by the downstream receiving mechanism. Ultimately, this feeding device can be sequentially connected with other automated process stations.

[0073] Preferably, the top surface of each guide plate side plate 602 has a beveled end away from the feeding channel 403 to further facilitate the export of the capped test tube 000.

[0074] Preferably, a channel side plate 406 is provided on each side of the section from the inlet chamber 500 to the outlet plate 600 along its length. Each channel side plate 406 includes a mounting part parallel to the horizontal plane, and the mounting part extends upward from one side of the side facing the feeding channel 403 to form a baffle 4061. The mounting parts of the two channel side plates 406 are respectively mounted on the sheet metal on the upper side of the corresponding linear transmission mechanism, and the baffles 4061 of the two channel side plates 406 are exactly adjacent to the inlet chamber 500. Along the length of the section from 00 to the outlet plate 600, on both outer sides, when the capped test tube 000 is suspended in the section from the inlet chamber 500 to the outlet plate 600, the two sides of the cap of the capped test tube 000 are located between the two stop bars 4061, and there is an appropriate gap between the two sides of the cap and the corresponding stop bar 4061; this design is intended to provide timely limiting and guiding function by the stop bars when the capped test tube has a tendency to move laterally due to the vibration of the transmission chain plate, the impact of starting and stopping or the accidental collision with the outside.

[0075] Preferably, given that when the capped test tube 000 is transported from the upstream output mechanism to the inlet of the inlet chamber 500 and falls, due to a certain initial horizontal velocity or falling impact, the capped test tube 000 will have a slight bouncing phenomenon, in order to limit the vertical (Z direction) movement of each capped test tube 000 in the initial stage of inlet and in the subsequent conveying process, and to prevent it from colliding with the capped test tube in front or interfering with the stable conveying of the material in front due to excessive jumping, this utility model also provides an upper limit plate 405 above the section from the inlet chamber 500 to the outlet plate 600.

[0076] The upper limit plate 405 is set along the material conveying direction in its length direction. To facilitate installation and avoid the operating space of the downstream tube handling mechanism, its cross-section is similar to a "7". Its bottom is connected to the mounting part of the channel side plate 406 on one side by bolt fasteners. Its top surface is a flat plate, which is used to cover the section from the inlet chamber 500 to the outlet plate 600. When the capped test tube 000 is suspended in the section from the inlet chamber 500 to the outlet plate 600, there is an appropriate gap between the top surface of the capped test tube 000 and the inner wall of the top surface of the upper limit plate 405. The hollow part on one side of the upper limit plate 405 provides material feeding space for the downstream tube handling mechanism.

[0077] As a preferred option, several observation ports can be opened on the other side of the upper limit plate 405 to facilitate observation of the material condition.

[0078] Preferably, the top surface of the upper limit plate 405, facing the upstream output mechanism, is folded upward at a small angle to form a guide slope 4051, which serves as a preliminary guide and buffer for the capped test tube 000.

[0079] Preferably, a pair of through-beam sensors 700 are provided at intervals on the first variable distance plate 202 or the second variable distance plate 203, corresponding to the position below the feeding channel 403, for real-time monitoring of the amount of material in the feeding channel 403.

[0080] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A feeding device compatible with multi-size capped test tubes, characterized in that, Including those mounted on the mounting platform (100): A pitch control assembly includes a first pitch control plate (202) and a second pitch control plate (203) that are slidably connected along the X direction, wherein the first pitch control plate (202) and the second pitch control plate (203) are arranged at a relative interval. Two linear transmission mechanisms (400) are respectively connected to the first variable pitch plate (202) and the second variable pitch plate (203). The gap between the two linear transmission mechanisms forms a feeding channel (403) for supporting the capped test tube (000). The upper limit plate (405) is connected to the first variable distance plate (202) or the second variable distance plate (203) on its bottom surface. Its top surface is located above the feeding channel (403), and there is an appropriate gap between the inner wall of its top surface and the top of the capped test tube in the feeding channel (403).

2. The feeding device compatible with multi-size capped test tubes according to claim 1, characterized in that, The pitch control component also includes: A plurality of variable pitch slide rails (201) are fixedly mounted on the mounting platform (100) at intervals along the Y direction. The first variable pitch plate (202) is slidably connected to one end of the plurality of variable pitch slide rails (201), and the second variable pitch plate (203) is slidably connected to the other end of the plurality of variable pitch slide rails (201). Two hand-cranked screw modules (204) have their fixed ends installed on the two opposite sides of the mounting platform, and their output ends are respectively connected to the first pitch plate (202) and the second pitch plate (203). Rotating the hand-cranked screw module (204) drives the first pitch plate (202) and the second pitch plate (203) to move synchronously towards or away from each other.

3. The feeding device compatible with multi-size capped test tubes according to claim 2, characterized in that, The first pitch plate (202) and the second pitch plate (203) have a plurality of locking holes (205) spaced apart along the X direction on both sides along the Y direction. Both ends of the first pitch plate (202) and the second pitch plate (203) along the Y direction are provided with a locking assembly, the locking assembly including a locking plate (302) and a locking bolt (301). Two locking plates (302) are respectively vertically fixed on both sides of the mounting platform (100) along the Y direction, and the ends of the first variable pitch plate (202) and the second variable pitch plate (203) are respectively set opposite to the two locking plates (302); Each locking plate (302) has two elongated adjustment holes (3021) spaced apart along the X direction at its upper end. The front end of the locking bolt (301) passes through the adjustment holes and stops in the corresponding locking hole (205) on the first variable pitch plate (202) or the second variable pitch plate (203).

4. The feeding device compatible with multi-size capped test tubes according to claim 1, characterized in that, A bracket plate (102) is installed on both the first pitch plate (202) and the second pitch plate (203), and the fixing part of each linear transmission mechanism (400) is installed on the corresponding bracket plate (102); Each of the linear transmission mechanisms (400) is a chain conveyor mechanism, which includes a rotary drive motor (401), a drive wheel, a driven wheel, and a transmission chain (402) surrounding the drive wheel and the driven wheel. The feeding trough (403) is composed of the upper surfaces of two opposing transmission chain plates, and the upper surface of each transmission chain plate (402) is provided with anti-slip texture.

5. The feeding device compatible with multi-size capped test tubes according to claim 4, characterized in that, The feeding channel (403) is provided with an inlet chamber (500) at the inlet end (4031). The inlet chamber (500) has a U-shaped inner cavity, and each of its left and right top surfaces facing the transmission chain plate (402) has an arc-shaped relief opening (501). The arc-shaped part of each transmission chain plate (402) located at the inlet end (4031) is movably accommodated at the corresponding arc-shaped relief opening (501), so that the top surface of the arc-shaped part of the transmission chain plate and the top surface of the inlet chamber form a flat plane. The U-shaped inner cavity of the inlet chamber (500) is connected to the feeding channel (403).

6. The feeding device compatible with multi-size capped test tubes according to claim 5, wherein, Two guide plates (600) are provided opposite each other at the outlet end (4032) of the feeding channel (403). Each guide plate (600) includes a guide plate bottom plate (601). One end of the guide plate bottom plate (601) extends vertically upward to form a guide plate side plate (602). An arc-shaped clearance opening (501) is opened at the end of the guide plate side plate facing the transmission chain plate (402). The guide plate base plate (601) of the two output plates is fixedly connected to both sides of the outlet end (4032), and the arc-shaped part of each transmission chain plate (402) is movably accommodated at the corresponding arc-shaped relief opening (501) at the outlet end (4032), so that the top surface of the arc-shaped part of the transmission chain plate and the top surface of the output plate form a flat plane.

7. The feeding device compatible with multi-size capped test tubes according to claim 5, wherein, The upper limit plate (405) is located at the inlet end of the feeding channel (403) and is folded upward to form a guide slope (4051).

8. The feeding device compatible with multi-size capped test tubes according to claim 6, wherein, Below the feeding channel (403) is a bottom plate (404), the bottom end of which is connected to the first variable distance plate (202) or the second variable distance plate (203). The top surface of the bottom plate (404) is a flat plate, which is located below the feeding channel (403), and there is an appropriate gap between the bottom surface of the capped test tube in the feeding channel (403) and the top surface of the bottom plate (404).

9. The feeding device compatible with multi-size capped test tubes according to claim 8, characterized in that, The bottom plate (404) is folded downward at one end of the inlet end of the feeding channel (403) to form a bottom plate slope (4041).

10. The feeding device compatible with multi-size capped test tubes according to claim 8, wherein, A channel side plate (406) is provided on each side of the section from the inlet bin (500) to the two outlet plates (600) along the conveying direction of the feeding channel (403). Each channel side plate (406) includes an installation part, which is folded upward and extended towards the feeding channel (403) to form a baffle (4061). The installation part of each channel side plate (406) is correspondingly installed on the fixing part of the two linear transmission mechanisms (400). The baffle (4061) of each channel side plate (406) is adjacent to the outer sides of both sides of the section from the inlet bin (500) to the outlet plate (600).

Images