Auxiliary device for detecting total migration amount of food contact material

Abstract

The utility model discloses an auxiliary device for detecting the total migration quantity of a food contact material, which belongs to the technical field of material detection, aims at solving the problem that the existing auxiliary device is not suitable for detecting plastic films with different specifications and lengths, and comprises a soaking pool, a plurality of connecting grooves are formed in the top of the soaking pool; the top of the soaking pool is detachably connected with a pool cover, the bottom of the pool cover is fixedly connected with a plurality of connecting columns corresponding to the connecting grooves, and the top of the pool cover is provided with an observation window. And the two ball nut seats are matched with the two guide sleeves to drive the two supporting plates to flexibly move, the positions of the two positioning mechanisms can be flexibly adjusted in a large range, the device can be suitable for detection work of plastic films with different specifications and lengths, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of material detection, and in particular relates to an auxiliary device for detecting the total migration amount of food contact materials. Background Art

[0002] The total migration amount of food contact materials refers to the total amount of various substances that migrate from food contact materials into food under certain conditions. Generally speaking, the test method for the total migration amount of food contact materials is to contact the tested material with simulated food, simulate the migration process under real use conditions under certain temperature and time conditions, and then use chromatography-mass spectrometry to determine the type and content of substances migrated from the food, and calculate the total migration amount. Plastic film is a material frequently used in the field of food packaging. The conventional testing method is to immerse the plastic film in the immersion solution. The plastic film is prone to shrinkage after being immersed in the solution, and insufficient contact with the solution leads to inaccurate test results. Therefore, an auxiliary device is required to flatten the plastic film.

[0003] The prior art discloses a nylon plastic film total migration test device with patent announcement number CN205719869U, which includes an immersion liquid pool, a pool cover and a film tensioning shaft, wherein the film tensioning shaft is rotatably arranged at one end of the immersion liquid pool, the film tensioning shaft is provided with at least two first hooks, and the other end of the immersion liquid pool is provided with at least two second hooks, and further includes a limit assembly for limiting the position of the tensioning shaft along the circumferential direction of the tensioning shaft, wherein the device can tension the nylon plastic film to prevent the nylon plastic film from shrinking during immersion, so that the nylon plastic film is in full contact with the immersion liquid, thereby improving the measurement accuracy; however, the following deficiencies still exist in actual use: from a practical point of view, the device tensions the nylon plastic film by rotating the film tensioning shaft, and can only be adjusted in a small range, and cannot detect plastic films of different specifications and lengths, and has low practicality; at the same time, the device uses a hook to pierce and fix the plastic film, which destroys the integrity of the plastic film and easily leads to detection errors.

[0004] Therefore, there is a need for an auxiliary device for detecting the total migration amount of food contact materials to solve the problem that the auxiliary device in the prior art cannot be applied to the detection of plastic films of different specifications and lengths. Utility Model Content

[0005] The purpose of the utility model is to provide a total migration detection auxiliary device for food contact materials to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an auxiliary device for detecting the total migration amount of food contact materials, comprising a immersion pool, the top of the immersion pool is provided with a plurality of connecting grooves, the top of the immersion pool is detachably connected with a pool cover, the bottom of the pool cover is fixedly connected with a plurality of connecting columns corresponding to the connecting grooves, the top of the pool cover is provided with an observation window, a two-way threaded rod is rotatably connected between the inner walls on both sides of the pool cover, a sliding rod is fixedly connected between the inner walls on both sides of the pool cover, the outer wall of the two-way threaded rod is rotatably connected with two ball nut seats, the outer wall of the sliding rod is slidably connected with two guide sleeves, the corresponding top of the ball nut seat and the bottom of the guide sleeve are fixedly connected with support plates, and positioning mechanisms are provided on the inner sides of the two support plates, one side of the two-way threaded rod passes through the pool cover and is fixedly connected with a worm gear, one side of the pool cover is fixedly connected with a concave frame, the inner wall of the concave frame is rotatably connected with a worm, and the top of the worm passes through the concave frame and is fixedly connected with a crank.

[0007] It should be noted in the solution that a shock-absorbing pad is fixedly connected to the bottom of the soaking pool.

[0008] It is further worth mentioning that the inner wall of the connecting groove fits tightly with the outer wall of the connecting column.

[0009] It should be further explained that the positioning mechanism includes a fixing groove fixedly connected to the inner side of the support plate, a threaded column is rotatably connected to the top center position of the fixing groove, a rotating plate is fixedly connected to the top of the threaded column, a pressure plate is rotatably connected to the bottom of the threaded column, and two limit rods are fixedly connected to the top of the pressure plate.

[0010] As a preferred implementation, a thread groove corresponding to the thread column and a limiting hole corresponding to the limiting rod are formed at the top of the fixing groove.

[0011] As a preferred implementation, anti-slip strips are fixedly connected to the bottom of the pressing plate and the upper surface of the bottom of the fixing groove.

[0012] As a preferred implementation, the worm is meshed with a worm wheel.

[0013] Compared with the prior art, the auxiliary device for detecting the total migration amount of food contact materials provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting the worm wheel and the worm shaft to cooperate with each other, the crank drives the worm shaft to rotate, so that the rotation of the worm wheel drives the two-way threaded rod to rotate, so that the two ball nut seats can move freely. The two ball nut seats and the two guide sleeves cooperate to drive the two support plates to move flexibly. The positions of the two positioning mechanisms can be flexibly adjusted over a large range, so that the device can be suitable for the detection of plastic films of different specifications and lengths, thereby increasing the practicality of the device.

[0015] (2) By setting up a positioning mechanism, the end of the plastic film to be tested is placed between the pressure plate and the fixed groove. The rotating plate drives the threaded column to rotate. The threaded column drives the pressure plate downward while rotating. The bottom of the pressure plate and the upper surface of the bottom of the fixed groove firmly clamp and fix the end of the plastic film, replacing the hook puncture fixation, maintaining the integrity of the plastic film and reducing the detection error. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a first perspective;

[0018] Figure 3 It is a schematic diagram of the structure inside the pool cover of the utility model;

[0019] Figure 4 For this utility model Figure 1 A partial enlarged view of the middle A;

[0020] Figure 5 It is a structural schematic diagram of the positioning mechanism of the utility model.

[0021] In the figure: 1. Soaking tank; 2. Connecting groove; 3. Tank cover; 4. Connecting column; 5. Observation window; 6. Bidirectional threaded rod; 7. Sliding rod; 8. Ball nut seat; 9. Guide sleeve; 10. Support plate; 11. Positioning mechanism; 1101. Fixing groove; 1102. Threaded column; 1103. Turning plate; 1104. Pressing plate; 1105. Limiting rod; 12. Worm gear; 13. Concave frame; 14. Worm; 15. Crank handle. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] See also Figure 1-5The utility model provides an auxiliary device for detecting the total migration amount of food contact materials, including a immersion pool 1, a plurality of connecting grooves 2 are provided on the top of the immersion pool 1, a pool cover 3 is detachably connected to the top of the immersion pool 1, a plurality of connecting columns 4 corresponding to the connecting grooves 2 are fixedly connected to the bottom of the pool cover 3, an observation window 5 is provided on the top of the pool cover 3, a two-way threaded rod 6 is rotatably connected between the inner walls on both sides of the pool cover 3, a sliding rod 7 is fixedly connected between the inner walls on both sides of the pool cover 3, two ball nut seats 8 are rotatably connected to the outer wall of the two-way threaded rod 6, two guide sleeves 9 are slidably connected to the outer wall of the sliding rod 7, a support plate 10 is fixedly connected to the top of the corresponding ball nut seat 8 and the bottom of the guide sleeve 9, a positioning mechanism 11 is provided on the inner sides of the two support plates 10, a worm wheel 12 is fixedly connected to one side of the two-way threaded rod 6 through the pool cover 3, a concave frame 13 is fixedly connected to one side of the pool cover 3, a worm 14 is rotatably connected to the inner wall of the concave frame 13, and a crank 15 is fixedly connected to the top of the worm 14 through the concave frame 13.

[0024] Further as Figure 1 and Figure 2 As shown, it is worth explaining in detail that a shock-absorbing pad is fixedly connected to the bottom of the immersion pool 1 to achieve a shock-absorbing effect, so that the immersion pool 1 remains stable throughout the entire detection process, thereby improving the stability of the detection work.

[0025] Further as Figure 1 and Figure 2 As shown, it is worth explaining in detail that the inner wall of the connecting groove 2 fits tightly with the outer wall of the connecting column 4, so that the connection between the pool cover 3 and the immersion pool 1 is more stable, and the pool cover 3 and the immersion pool 1 enclose a relatively closed space to prevent the external environment from interfering with the detection work.

[0026] Further as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it is worth explaining in detail that the worm 14 is meshed with the worm wheel 12 to ensure that the worm 14 can drive the worm wheel 12 to rotate, thereby providing a driving force for the movement of the two support plates 10. At the same time, the transmission of the worm wheel 12 and the worm 14 has a self-locking characteristic, which can effectively prevent reversal, so that the plastic film always remains in an unfolded state.

[0027] According to the above working process, it can be known that: by setting the worm wheel 12 and the worm 14 to cooperate with each other, the crank 15 drives the worm 14 to rotate, so that the rotation of the worm wheel 12 drives the bidirectional threaded rod 6 to rotate, so that the two ball nut seats 8 can move freely, and the two ball nut seats 8 and the two guide sleeves 9 cooperate to drive the two support plates 10 to move flexibly, and the positions of the two positioning mechanisms 11 can be flexibly adjusted over a large range, so that the device can be suitable for plastic film detection work of different specifications and lengths, thereby increasing the practicality of the device.

[0028] Further as Figure 5 As shown, it is worth explaining in detail that the positioning mechanism 11 includes a fixing groove 1101 fixedly connected to the inner side of the support plate 10, a threaded column 1102 is rotatably connected to the top center position of the fixing groove 1101, a rotating plate 1103 is fixedly connected to the top of the threaded column 1102, a pressure plate 1104 is rotatably connected to the bottom of the threaded column 1102, and two limiting rods 1105 are fixedly connected to the top of the pressure plate 1104. By setting the positioning mechanism 11, the bottom of the pressure plate 1104 and the upper surface of the bottom of the fixing groove 1101 firmly clamp and fix the end of the plastic film, replacing the hook puncture fixation, thereby maintaining the integrity of the plastic film and reducing the detection error.

[0029] Further Figure 5 As shown, it is worth explaining in detail that a threaded groove corresponding to the threaded column 1102 and a limiting hole corresponding to the limiting rod 1105 are provided on the top of the fixing groove 1101. The threaded groove cooperates with the threaded column 1102 to ensure that the threaded column 1102 can be raised and lowered while rotating. The limiting hole plays a role of limiting and guiding to ensure that the rise and fall of the pressure plate 1104 is more stable.

[0030] Further Figure 5 As shown, it is worth explaining in detail that the bottom of the pressure plate 1104 and the bottom upper surface of the fixing groove 1101 are fixedly connected with anti-slip strips, which increase the friction between the bottom upper surface of the pressure plate 1104 and the bottom upper surface of the fixing groove 1101 and the plastic film, so that the plastic film is clamped and fixed more firmly.

[0031] This solution has the following working process: in actual use, the end of the plastic film to be tested is placed between the pressure plate 1104 and the fixed groove 1101, and the rotating plate 1103 is rotated to drive the threaded column 1102 to rotate. The threaded column 1102 drives the pressure plate 1104 to press down while rotating. The bottom of the pressure plate 1104 and the upper surface of the bottom of the fixed groove 1101 firmly clamp and fix the end of the plastic film. Then, the crank 15 is rotated to drive the worm 14 to rotate, so that the worm wheel 12 rotates and drives the bidirectional threaded rod 6 to rotate, so that the two ball nut seats 8 can move freely. The two ball nut seats 8 and the two guide sleeves 9 cooperate to drive the two support plates 10 to move flexibly, thereby adjusting the position of the two fixed grooves 1101 to unfold the plastic film, and then pour the soaking liquid into the soaking pool 1, and cover the pool cover 3 to drive the plastic film to perform soaking detection.

[0032] In summary: by setting the worm wheel 12 and the worm 14 to cooperate with each other, the two ball nut seats 8 can move freely, and the two ball nut seats 8 and the two guide sleeves 9 cooperate to drive the two support plates 10 to move flexibly, and the positions of the two positioning mechanisms 11 can be flexibly adjusted over a large range, so that the device can be suitable for plastic film detection work of different specifications and lengths, thereby increasing the practicality of the device; by setting the positioning mechanism 11, the bottom of the pressure plate 1104 and the upper surface of the bottom of the fixing groove 1101 firmly clamp and fix the end of the plastic film, replacing the hook puncture fixation, thereby maintaining the integrity of the plastic film and reducing the detection error.

Claims

1. A food contact material total migration detection auxiliary device, comprising a soaking tank (1), characterized in that: The top of the soaking pool (1) is provided with a plurality of connection grooves (2); the top of the soaking pool (1) is detachably connected with a pool cover (3); the bottom of the pool cover (3) is fixedly connected with a plurality of connection columns (4) corresponding to the connection grooves (2); the top of the pool cover (3) is provided with an observation window (5); two-way threaded rods (6) are rotatably connected between the inner walls on both sides of the pool cover (3); a slide rod (7) is fixedly connected between the inner walls on both sides of the pool cover (3); the outer wall of the two-way threaded rod (6) is rotatably connected with two ball nut seats (8); the outer wall of the slide rod (7) is Two guide sleeves (9) are connected to the wall in a sliding manner, and a support plate (10) is fixedly connected to the top of the corresponding ball nut seat (8) and the bottom of the guide sleeve (9), and a positioning mechanism (11) is arranged on the inner side of the two support plates (10). One side of the bidirectional threaded rod (6) passes through the pool cover (3) and is fixedly connected to a worm gear (12), and one side of the pool cover (3) is fixedly connected to a concave frame (13), and the inner wall of the concave frame (13) is rotatably connected to a worm (14), and the top of the worm (14) passes through the concave frame (13) and is fixedly connected to a crank (15).

2. The device for detecting the total migration of food contact materials according to claim 1, characterized in that: A shock-absorbing pad is fixedly connected to the bottom of the soaking pool (1).

3. The device for detecting the total migration of food contact materials according to claim 1, characterized in that: The inner wall of the connecting groove (2) is tightly fitted with the outer wall of the connecting column (4).

4. The device for detecting the total migration of food contact materials according to claim 1, characterized in that: The positioning mechanism (11) comprises a fixing groove (1101) fixedly connected to the inner side of the support plate (10); a threaded column (1102) is rotatably connected to the center position of the top of the fixing groove (1101); a rotating plate (1103) is fixedly connected to the top of the threaded column (1102); a pressing plate (1104) is rotatably connected to the bottom of the threaded column (1102); and two limiting rods (1105) are fixedly connected to the top of the pressing plate (1104).

5. The device for detecting the total migration of food contact materials according to claim 4, characterized in that: The top of the fixing groove (1101) is provided with a thread groove corresponding to the thread column (1102) and a limiting hole corresponding to the limiting rod (1105).

6. The device for detecting the total migration of food contact materials according to claim 4, characterized in that: The bottom of the pressing plate (1104) and the upper surface of the bottom of the fixing groove (1101) are both fixedly connected with anti-slip strips.

7. The device for detecting the total migration of food contact materials according to claim 1, characterized in that: The worm (14) is meshed with the worm wheel (12).

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