Vacuum adsorption double-position pitch changing device for test tubes

Abstract

The invention belongs to the technical field of medical instrument production, and particularly relates to a test tube vacuum adsorption double-position pitch changing device which comprises a top plate, mounting plates are symmetrically mounted on the top plate, a first up-down driving device is mounted on the mounting plates, a second up-down driving device is mounted below the first up-down driving device, and a pitch changing track is mounted below the second up-down driving device. The connecting rod assembly comprises a connecting rod transverse plate, a connecting rod right side plate and a connecting rod left side plate are installed on the connecting rod transverse plate, and a connecting rod is installed between the connecting rod right side plate and the connecting rod left side plate after being arranged on a lower sliding block of the variable-pitch assembly in a sleeving mode. When the material tolerance is increased or the plunger is abraded, the taking-out success rate and durability are greatly improved, meanwhile, when the test tube is taken out, the vacuum pressure is monitored, an alarm is given when the test tube is not taken out, manual reinspection is not needed, the tray loading success rate of products is improved, and the labor cost of the products is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical device production, in particular to a test tube vacuum adsorption double-position variable distance device. Background Art

[0002] At present, when the test tube assembly equipment takes out the assembled test tube from the fixture, the plunger is mainly inserted into the center hole of the cap rubber plug to take out the material. Due to the tolerance of the center hole of the cap and the wear of the plunger after long-term use, the test tube cannot be taken out from the fixture, and the subsequent tray loading process cannot be completed, the equipment is shut down, and the production efficiency is low;

[0003] At present, when the test tube assembly equipment takes the test tube out of the fixture, it is unable to judge whether all the test tubes have been taken out. If there are any tubes missing during the production process, they need to be identified through manual re-inspection, which is likely to cause product quality problems and has high labor costs.

[0004] At present, when the test tube assembly equipment takes the test tube out of the fixture and loads it into the pallet, the test tube finished product is loaded into the pallet through a fixed position variable distance mechanism, which can only meet the loading requirements of one type of pallet, namely, a straight pallet or a misaligned pallet, and cannot meet the market demand for two specifications of straight pallets and misaligned pallets at the same time;

[0005] To this end, there is an urgent need to provide a test tube vacuum adsorption double-position variable distance device that can ensure that the test tubes are taken out of the tooling fixture more stably and reliably and loaded into the tray, can judge whether there are missed tubes, and has multiple variable distance positions to meet the requirements of automatic switching between the correct tray and the misaligned tray. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] Therefore, the purpose of the present invention is to provide a double-position variable-distance device for vacuum adsorption of test tubes. When the test tubes are taken out from the tooling fixture, the tubes are taken out by vacuum adsorption and plunger insertion. When the material tolerance becomes larger or the plunger is worn, the success rate and durability of taking out are greatly improved. At the same time, when the test tubes are taken out, the vacuum pressure is monitored and an alarm is given for missed tubes. There is no need for manual re-inspection, which improves the success rate of product palletizing and reduces the labor cost of the product.

[0008] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0009] A test tube vacuum adsorption dual-position variable distance device, comprising:

[0010] A top plate, a mounting plate is symmetrically mounted on the top plate, an up-down driving device 1 is mounted on the mounting plate, an up-down driving device 2 is mounted below the up-down driving device 1, and a variable pitch track is mounted below the up-down driving device 2;

[0011] A left plate and a right plate are installed on the top plate, and an up-down driving device 3 is installed on the left plate and the right plate, and a test tube separation plate is connected below the up-down driving device 3, and a horizontal fixing plate is installed below the left plate and the right plate, and a front-rear driving device is installed below the horizontal fixing plate, and the front-rear driving device is connected to a connecting rod assembly;

[0012] The connecting rod assembly comprises a connecting rod cross plate, on which a connecting rod right plate and a connecting rod left plate are installed. The connecting rod is sleeved behind the lower slider of the pitch-changing assembly and is installed between the connecting rod right plate and the connecting rod left plate.

[0013] As a preferred solution of a test tube vacuum adsorption double-position variable distance device described in the present invention, wherein: the variable distance component 1 includes an upper slider and a lower slider, the upper slider and the lower slider are connected together through a T-shaped groove and a T-shaped boss, guide rods are installed at both ends of the upper slider for being connected to the variable distance track, and two linear bearings are installed in the middle of the upper slider for being connected to the sliding rod.

[0014] As a preferred solution of the test tube vacuum adsorption dual-position variable distance device described in the present invention, wherein: a plurality of tube taking heads are installed at the lower end of the lower sliding block, the tube taking heads are hollow, and the lower ends of the tube taking heads are knurled or threaded.

[0015] As a preferred solution of the test tube vacuum adsorption dual-position variable distance device described in the present invention, a variable distance component-vacuum channel is arranged inside the lower slider, and the variable distance component-vacuum channel connects a plurality of tube heads and a vacuum source.

[0016] As a preferred solution of the test tube vacuum adsorption dual-position variable distance device described in the present invention, wherein: one end of the lower sliding block is provided with a through hole 1 for sleeve connection with the connecting rod and connected to the connecting rod assembly.

[0017] As a preferred solution of a test tube vacuum adsorption double-position variable distance device described in the present invention, wherein: guide rods are installed at both ends of the variable distance component 2 for sleeved on the variable distance track, two linear bearings are installed in the middle of the variable distance component 2 for sleeved on the sliding rod, a plurality of tube heads are installed at the lower end of the variable distance component 2, the tube heads are hollow, and the lower ends of the tube heads are knurled or threaded, a vacuum channel of the variable distance component 2 is arranged inside the variable distance component 2, and the vacuum channel of the variable distance component 2 connects the plurality of tube heads and the vacuum source.

[0018] As a preferred solution of the test tube vacuum adsorption double-position variable distance device described in the present invention, the variable distance component one and the variable distance component two are connected to the hollow tube taking head through one end of the vacuum air circuit, and the other end is connected to the vacuum sensor and the air circuit switch, and then to the vacuum source.

[0019] As a preferred solution of the test tube vacuum adsorption dual-position variable distance device described in the present invention, wherein: the test tube detachment plate is provided with irregular guide holes for variable distance operation after the tube head is sleeved.

[0020] As a preferred solution of the test tube vacuum adsorption double-position variable distance device described in the present invention, the up and down driving device, the up and down driving device, the front and back driving device and the up and down driving device are motion modules driven by cylinders or motors.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When taking the test tube out of the fixture, vacuum adsorption and plunger insertion are used to remove the tube. When the material tolerance becomes larger or the plunger is worn, the removal success rate and durability are greatly improved;

[0023] 2. When taking out the test tube, the vacuum pressure is monitored and an alarm is given for missed tubes. No manual re-inspection is required, which improves the success rate of product tray loading and reduces the labor cost of the product.

[0024] 3. It can quickly switch between different variable distance positions and is compatible with two specifications of pallets: upright pallets and offset pallets to meet diverse market demands. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 The present invention is a side view Figure 1 ;

[0028] Figure 3 The present invention is a side view Figure 2 ;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the pitch-changing assembly, the connecting rod assembly and the upper and lower driving device 3 of the present invention;

[0030] Figure 5 The side view of the pitch-changing assembly 1 of the present invention Figure 1 ;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the pitch-changing assembly 1 of the present invention;

[0032] Figure 7 The side view of the pitch-changing assembly 1 of the present invention Figure 2 ;

[0033] Figure 8 The side view of the variable pitch assembly 2 of the present invention Figure 1 ;

[0034] Fig. 9 It is a schematic diagram of the three-dimensional structure of the pitch-changing assembly 2 of the present invention;

[0035] Fig.10 It is the vacuum adsorption control diagram of the present invention;

[0036] Fig.11 It is a schematic diagram of the test tube separation plate 111 of the present invention.

[0037] In the figure: top plate 101; left side plate 102; right side plate 103; up and down drive device 1 104; mounting plate 1 105; up and down drive device 2 106; variable pitch track 107; horizontal fixing plate 108; front and rear drive device 109; up and down drive device 3 110; test tube separation plate 111; slide bar 201; variable pitch component 1 202; upper slider 2021; lower slider 2022; variable pitch component 1 vacuum channel 2023; guide Rod 2024; through hole 1 2025; T-shaped groove 2026; T-shaped boss 2027; linear bearing 2028; variable pitch component 2 203; variable pitch component 2 vacuum channel 2031; connecting rod assembly 205; connecting rod cross plate 2050; connecting rod right side plate 2051; connecting rod left side plate 2052; connecting rod 2053; pipe head 206; vacuum air circuit 301; vacuum sensor 302; vacuum source 303; air circuit switch 304. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] The present invention provides a test tube vacuum adsorption double position variable distance device, please refer to Figure 1-11 , including a top plate 101, a mounting plate 105 symmetrically screwed on the top plate 101, an upper and lower driving device 104 connected to the mounting plate 105 through a connecting bolt, an upper and lower driving device 106 threadedly connected below the upper and lower driving device 104, and a variable pitch track 107 threadedly connected below the upper and lower driving device 106;

[0043] The top plate 101 is provided with a left plate 102 and a right plate 103, the left plate 102 and the right plate 103 are threadedly connected with an up-and-down driving device 3 110, the lower part of the up-and-down driving device 3 110 is connected with a test tube detaching plate 111, the lower part of the left plate 102 and the right plate 103 is connected with a horizontal fixing plate 108 through a connecting bolt, the lower part of the horizontal fixing plate 108 is threadedly connected with a front-and-rear driving device 109, and the front-and-rear driving device 109 is connected with a connecting rod assembly 205;

[0044] The connecting rod assembly 205 includes a connecting rod cross plate 2050, on which a connecting rod right plate 2051 and a connecting rod left plate 2052 are installed. The connecting rod 2053 is sleeved behind the lower slider 2022 of the pitch-changing assembly 1202 and installed between the connecting rod right plate 2051 and the connecting rod left plate 2052.

[0045] The variable pitch component 202 includes an upper slider 2021 and a lower slider 2022, which are sleeved together through a T-shaped groove 2026 and a T-shaped boss 2027. Both ends of the upper slider 2021 are equipped with guide rods 2024 for sleeved on the variable pitch track 107. Two linear bearings 2028 are installed in the middle of the upper slider 2021 for sleeved on the slide bar 201.

[0046] A plurality of pipe heads 206 are installed at the lower end of the lower slider 2022. The pipe heads 206 are hollow, and the lower ends of the pipe heads 206 are knurled or threaded.

[0047] A variable distance component-vacuum channel 2023 is provided inside the lower slider 2022, and the variable distance component-vacuum channel 2023 connects a plurality of pipe heads 206 and a vacuum source 303;

[0048] A through hole 2025 is provided at one end of the lower slider 2022 for sleeve connection with the connecting rod 2053 and connected to the connecting rod assembly 205;

[0049] Guide rods 2024 are installed at both ends of the pitch-changing component 203 for sleeve-connecting the pitch-changing track 107. Two linear bearings 2028 are installed in the middle of the pitch-changing component 203 for sleeve-connecting the slide bar 201. A plurality of pipe heads 206 are installed at the lower end of the pitch-changing component 203. The pipe heads 206 are hollow, and the lower ends of the pipe heads 206 are knurled or threaded. A vacuum channel 2031 of the pitch-changing component 2 is arranged inside the pitch-changing component 203. The vacuum channel 2031 of the pitch-changing component 2 connects the plurality of pipe heads 206 and the vacuum source 303.

[0050] The variable pitch component 1 202 and the variable pitch component 2 203 are connected to the hollow pipe head 206 through the vacuum air path 301 at one end, and the other end is connected to the vacuum sensor 302 and the air path switch 304, and then connected to the vacuum source 303;

[0051] The test tube detaching plate 111 is provided with irregular guide holes for variable distance operation after the tube head 206 is sleeved;

[0052] The up-and-down driving device 1104, the up-and-down driving device 2106, the front-and-rear driving device 109 and the up-and-down driving device 3110 are motion modules driven by cylinders or motors.

[0053] Working principle:

[0054] The up-down driving device 1104 and the up-down driving device 2106 are in the lower position, the variable pitch track 107 installed on the up-down driving device 2106 is in the lower position, the variable pitch assembly 1202 and the guide rod 2024 of the variable pitch assembly 2203 which are driven and sleeved on the variable pitch track 107 are located at point A, at this time, the center distance of the tube head 206 is consistent with the center distance of the test tube on the tooling, the up-down driving device 3110 and the test tube separation plate 111 installed on the up-down driving device 3110 are in the upper position, the front-rear driving device 109 and the connecting rod assembly 205 are in the rear position, which is the initial state of the device;

[0055] When used for loading the tray on the upright tray, the test tube vacuum adsorption double-position variable distance device is first in the initial state. When the tube removal head 206 is inserted into or sleeved on the cap groove at the top of the test tube, the air circuit switch 304 on the vacuum air circuit 301 is opened to connect the vacuum source 303 and the tube removal head 206. The tube removal head 206 sucks the test tube cap through vacuum. After the test tube in the tool is taken out, the upper and lower driving devices 2106 move upward, driving the variable distance track 107 installed on the upper and lower driving devices 2106 to move upward, driving the guide rods 2024 of the variable distance components 1202 and 2203 sleeved on the variable distance track 107 to move to point B of the variable distance track 107, and the variable distance components 1202 and 2203 are gathered toward the middle from both ends along the slide bar 201. At this time, the center distance of the taken out test tube is changed to the center distance consistent with the upright tray. At the same time, the vacuum sensor 302 installed between the tube taking head 206 and the vacuum source 303 detects the vacuum negative pressure value of the vacuum air circuit 301, and transmits the measured vacuum negative pressure data to the PLC industrial control computer for comparison with the vacuum negative pressure data of the vacuum source 303. If the data are the same or close, it is determined that there is a test tube on each tube taking head 206, and all the test tubes are successfully taken out, and then the next step is performed. If the data are different or the difference is too large, it is determined that the tube taking head 206 fails to take the tube, and the PLC industrial control computer will prompt an alarm. When all the test tubes are successfully taken out and the test tubes are loaded into the tray, the air circuit switch 304 on the vacuum air circuit 301 is closed, and the upper and lower drive devices 3110 drive the test tube separation plate 111 to move downward, separating all the test tubes from the device. After separation, all drive devices and components return to their initial state;

[0056] When used for loading the displaced tray with the pallet, the test tube vacuum adsorption double-position variable distance device is first in the initial state. When the tube removal head 206 is inserted into or sleeved on the cap groove at the top of the test tube, the air circuit switch 304 on the vacuum air circuit 301 is opened to connect the vacuum source 303 and the tube removal head 206. The tube removal head 206 sucks the test tube cap by vacuum. After the test tube in the tool is taken out, the upper and lower driving device 2106 moves upward, driving the variable distance track 107 installed on the upper and lower driving device 2106 to move upward, driving the guide rod 2024 of the variable distance component 1202 and the variable distance component 2203 sleeved on the variable distance track 107 to move to point B of the variable distance track 107, and the variable distance component 1202 and the variable distance component 2203 are gathered toward the middle from both ends along the sliding bar 201, and the front and rear driving devices 109 are extended, driving the connecting rod assembly 205 to drive the lower slider 2022 and The upper slider 2021 is offset, and then the upper and lower driving devices 1104 move upward, driving the upper and lower driving devices 2106, the variable pitch track 107, and the guide rods of the variable pitch components 1202 and 2203 on the variable pitch track 107 to move to point C of the variable pitch track 107. The variable pitch components 1202 and 2203 are further retracted from both ends along the slide bar 201 toward the middle. At this time, the center distance of the taken out test tube is changed to the center distance consistent with the offset tray. At the same time, the vacuum sensor 302 installed between the tube taking head 206 and the vacuum source 303 detects the vacuum negative pressure value of the vacuum air circuit 301, and transmits the measured vacuum negative pressure data to the PLC industrial control computer and compares it with the vacuum negative pressure data of the vacuum source 303. If the data are the same or close, it is determined that there is a test tube on each tube taking head 206, and all the test tubes are successfully taken out, and then the next step is performed. If the data are different or the difference is too large, it is determined that the tube removal head 206 has failed to remove the tube, and the PLC industrial control computer will prompt an alarm. When all the test tubes are successfully removed and the test tubes are loaded into the tray, the air circuit switch on the vacuum air circuit 301 is closed 304, and the upper and lower driving devices 3110 drive the test tube separation plate 111 to move downward, separating all the test tubes from the device. After separation, all driving devices and components are restored to the initial state.

[0057] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A test tube vacuum adsorption dual-position variable distance device, characterized in that: include: A top plate (101), a mounting plate (105) is symmetrically mounted on the top plate (101), an up-down driving device 1 (104) is mounted on the mounting plate (105), an up-down driving device 2 (106) is mounted below the up-down driving device 1 (104), and a variable pitch track (107) is mounted below the up-down driving device 2 (106); A left side plate (102) and a right side plate (103) are mounted on the top plate (101), and an up-down driving device (110) is mounted on the left side plate (102) and the right side plate (103). A test tube detaching plate (111) is connected below the up-down driving device (110). A horizontal fixing plate (108) is mounted below the left side plate (102) and the right side plate (103), and a front-rear driving device (109) is mounted below the horizontal fixing plate (108). The front-rear driving device (109) is connected to a connecting rod assembly (205); The connecting rod assembly (205) includes a connecting rod cross plate (2050), on which a connecting rod right side plate (2051) and a connecting rod left side plate (2052) are installed. The connecting rod (2053) is mounted on the lower slider (2022) of the pitch-changing assembly 1 (202) and is installed between the connecting rod right side plate (2051) and the connecting rod left side plate (2052).

2. A test tube vacuum adsorption dual-position variable distance device according to claim 1, characterized in that: The variable pitch component 1 (202) comprises an upper slider (2021) and a lower slider (2022), wherein the upper slider (2021) and the lower slider (2022) are sleeved together via a T-shaped groove (2026) and a T-shaped boss (2027), guide rods (2024) are installed at both ends of the upper slider (2021) for sleeved onto the variable pitch track (107), and two linear bearings (2028) are installed in the middle of the upper slider (2021) for sleeved onto the slide rod (201).

3. A test tube vacuum adsorption dual-position variable distance device according to claim 2, characterized in that: A plurality of pipe taking heads (206) are installed at the lower end of the lower sliding block (2022); the pipe taking heads (206) are hollow, and the lower ends of the pipe taking heads (206) are knurled or threaded.

4. A test tube vacuum adsorption dual-position variable distance device according to claim 3, characterized in that: A variable pitch component-vacuum channel (2023) is provided inside the lower slider (2022), and the variable pitch component-vacuum channel (2023) is connected to a plurality of pipe taking heads (206) and a vacuum source (303).

5. A test tube vacuum adsorption dual-position variable distance device according to claim 4, characterized in that: One end of the lower slider (2022) is provided with a through hole 1 (2025) for sleeve connection with the connecting rod (2053) and connected to the connecting rod assembly (205).

6. A test tube vacuum adsorption dual-position variable distance device according to claim 5, characterized in that: Guide rods (2024) are installed at both ends of the pitch-changing component 2 (203) for sleeve-connecting the pitch-changing track (107); two linear bearings (2028) are installed in the middle of the pitch-changing component 2 (203) for sleeve-connecting the slide bar (201); a plurality of pipe heads (206) are installed at the lower end of the pitch-changing component 2 (203); the pipe heads (206) are hollow; the lower ends of the pipe heads (206) are knurled or threaded; a pitch-changing component 2 vacuum channel (2031) is arranged inside the pitch-changing component 2 (203); the pitch-changing component 2 vacuum channel (2031) connects the plurality of pipe heads (206) and the vacuum source (303).

7. A test tube vacuum adsorption dual-position variable distance device according to claim 6, characterized in that: The variable pitch component 1 (202) and the variable pitch component 2 (203) are connected to the hollow pipe head (206) through one end of the vacuum air circuit (301), and the other end is connected to the vacuum sensor (302) and the air circuit switch (304), and then connected to the vacuum source (303).

8. A test tube vacuum adsorption dual-position variable distance device according to claim 7, characterized in that: The test tube detaching plate (111) is provided with irregular guide holes for variable distance operation after the test tube detaching plate (206) is sleeved with the tube head.

9. A test tube vacuum adsorption dual-position variable distance device according to claim 8, characterized in that: The up-down driving device 1 (104), the up-down driving device 2 (106), the front-back driving device (109) and the up-down driving device 3 (110) are motion modules driven by cylinders or motors.

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