Forced oxidation test system

Abstract

The application relates to a forced oxidation test system, comprising: a forced oxidation subsystem, a first machine box, a second machine box and a connecting device; the inner cavities of adjacent forced oxidation subsystems are arranged in parallel; the forced oxidation subsystem comprises: forced oxidation parts, the inner cavities of adjacent forced oxidation parts are arranged in series; the packaging to be tested is placed on the first machine box; the second machine box is connected with the first machine box through the connecting device; the forced oxidation subsystem is installed on the second machine box, and the forced oxidation part is arranged opposite to the packaging to be tested; the second machine box is configured to act along the axis of the connecting device to the direction close to the packaging to be tested, and is sealedly installed into the inner cavity of the forced oxidation part on the packaging to be tested, so that the displacement gas in the inner cavity of the forced oxidation part penetrates into the packaging to be tested. The forced oxidation subsystems of the application can provide stable packaging to be tested with different oxygen permeation degrees for shelf life simulation test.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging test field, in particular to a forced oxidation test system. BACKGROUND

[0002] With the development of packaging technology, and the in-depth study of the oxygen barrier performance of packaging, the current overall shelf life evaluation method of product is mainly to use the environmental test box to carry out light and heat treatment on the sample, but the existing direct treatment test method can only control the light and heat conditions, and cannot control the oxygen permeation amount, so that the final test result is different from the actual shelf life.

[0003] For example, the test data of thin film oxygen permeation, a 1mm thick 25cm 2 low-density PE material has a permeability of about 39.996ml / (m 2 ·d) at 20℃, 80%RH, 20%O2, about 52.953ml / (m 2 ·d) at 30℃, 80%RH, 20%O2, and about 68.862ml / (m 2 ·d) at 40℃, 80%RH, 20%O2. According to the van't Hoff chemical reaction rule, the reaction rate becomes 2-4 times of the original reaction rate for every 10K increase in reaction temperature. Obviously, without forced quantitative introduction of oxygen, direct treatment and study of the shelf life of the product have obvious limitations. SUMMARY

[0004] Therefore, it is necessary to provide a forced oxidation test system for the problem of how to provide pre-treated samples with different oxygen permeation degrees for shelf life simulation test.

[0005] The present application provides a forced oxidation test system, comprising:

[0006] a forced oxidation subsystem, the inner cavities of adjacent forced oxidation subsystems are arranged in parallel; the forced oxidation subsystem comprises:

[0007] a forced oxidation part, the inner cavities of adjacent forced oxidation parts are arranged in series;

[0008] a first machine case, the packaging to be tested is placed on the first machine case; and

[0009] A second cabinet is connected with the first cabinet through a connecting device; the forced oxidation subsystem is installed on the second cabinet, and the forced oxidation part is arranged opposite to the package to be tested; the second cabinet is configured to move along the axis of the connecting device to the package to be tested in a direction close to the package to be tested, so that the inner cavity of the forced oxidation part is sealingly installed on the package to be tested, and the displacement gas in the inner cavity of the forced oxidation part penetrates into the package to be tested.

[0010] In one of the embodiments, the forced oxidation part comprises:

[0011] A seat body is provided with a seat body cavity opened in a first direction, and the seat body cavity is provided with a mounting port, wherein the first direction is configured as the mounting direction of the package to be tested;

[0012] A sealing assembly is arranged in the seat body cavity and close to one end of the mounting port; the sealing assembly is sleeved between the package to be tested and the seat body cavity, and a displacement sub-cavity is formed in the seat body cavity; and

[0013] A gas displacement assembly is connected with the displacement sub-cavity, and the gas displacement assembly is configured to introduce a displacement gas source into the displacement sub-cavity through a ventilation connector.

[0014] In one of the embodiments, the forced oxidation part further comprises:

[0015] A displacement sensing member is configured to obtain the temperature and / or pressure in the plurality of displacement sub-cavities which are connected with each other in the same forced oxidation subsystem; the displacement sensing member is installed on the seat body of any one and / or both of the forced oxidation parts in the same forced oxidation subsystem, and the displacement sensing member is connected with the displacement sub-cavities.

[0016] In one of the embodiments, the sealing assembly comprises:

[0017] A sealing member is configured to adjust the sealing between the package to be tested and the seat body cavity through the volume change of the sealing member;

[0018] A sealing air inlet connector is connected with the seat body cavity; and

[0019] A sealing air filling needle, a first end of the sealing air filling needle is connected with the sealing member, and a second end of the sealing air filling needle is connected with a first end of the sealing air inlet connector; a tight gas source is filled into the sealing member through the sealing air inlet connector and the sealing air filling needle.

[0020] In one of the embodiments, the gas displacement assembly comprises:

[0021] A displacement inlet connector is provided, which is arranged on the first side of the seat and is connected to the displacement sub-cavity. Displacement gas is introduced into the displacement sub-cavity through the displacement inlet connector.

[0022] The displacement vent connector is arranged on the second side opposite to the first side of the seat body, and the displacement vent connector is connected to the displacement sub-cavity.

[0023] In one embodiment, the forced oxidation subsystem further includes:

[0024] A temperature regulating unit is installed between the second gas supply component and the input end of the displacement gas inlet connector, and the temperature regulating unit is configured to regulate the temperature of the displacement gas entering the inner cavity of the forced oxidation unit; the temperature regulating unit includes:

[0025] The heater is mounted on the coil support;

[0026] An intake coil is installed on the heater in a spiral shape; one end of the intake coil is connected to the input end of the displacement intake connector, and the displacement gas is introduced from the other end of the intake coil.

[0027] A dryer is installed at one end of the intake coil near the second end of the intake coil; and

[0028] A temperature sensor is connected to the intake coil.

[0029] In one embodiment, the forced oxidation subsystem further includes:

[0030] A pressure regulating unit is configured to regulate the pressure of the replacement gas entering the cavity of the forced oxidation unit; the pressure regulating unit includes:

[0031] The intake regulating valve is connected to the replacement intake connector via an air pipe; and

[0032] An exhaust regulating valve is connected to the displacement outlet connector via the air pipe.

[0033] In one embodiment, a positioning slot is provided on the first chassis, and the package to be tested is placed in the positioning slot.

[0034] In one embodiment, a ventilation hole is provided at the bottom of the positioning groove.

[0035] In one embodiment, the connection device includes:

[0036] The drive motor is installed in the first chassis;

[0037] A synchronous transmission shaft connected with an output end of the driving motor; and

[0038] A telescopic rod, a first end of a fixed segment of the telescopic rod is connected with the first case, a second end of the fixed segment of the telescopic rod is connected with a first end of a movable segment of the telescopic rod, a second end of the movable segment of the telescopic rod is connected with the second case; the synchronous transmission shaft is connected with the second end of the fixed segment of the telescopic rod or the first end of the movable segment of the telescopic rod.

[0039] The forced oxidation test system provided by the application can accelerate the penetration of the replacement gas into the packaging to be tested through the forced oxidation part, and each forced oxidation subsystem can provide stable packaging to be tested with different oxygen penetration degrees for shelf life simulation test. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A structure schematic diagram of a forced oxidation test system provided by an embodiment of the application is shown;

[0041] Figure 2 A partial perspective structure schematic diagram of the A is shown; Figure 1

[0042] Figure 3 A structure schematic diagram of the forced oxidation part is shown; Figure 2

[0043] Figure 4 A working principle schematic diagram of the forced oxidation subsystem is shown; Figure 1

[0044] Figure 5 A structure schematic diagram of the temperature adjusting part is shown.

[0045] REFERENCE NUMERALS:

[0046] 1000 - forced oxidation subsystem;

[0047] 1100 - forced oxidation part;

[0048] 1110 - seat body;

[0049] 1120 - seat body inner cavity;

[0050] 1130 - sealing assembly;

[0051] 1131 - sealing member;

[0052] 1132 - sealing air inlet joint;

[0053] 1133 - sealing air filling needle;

[0054] 1140 - gas replacement assembly;​​​

[0055] 1141 - replacement air inlet joint;

[0056] 1142 - replacement air outlet joint;

[0057] 1150 - temperature adjustment unit;

[0058] 1151 - heater;

[0059] 1152 - air inlet coil;

[0060] 1153 - dryer;

[0061] 1154 - coil support;

[0062] 1160 - pressure adjustment unit;

[0063] 1161 - air inlet adjustment valve;

[0064] 1162 - air outlet adjustment valve;

[0065] 1170 - replacement sensing member; 2000 - first cabinet;

[0066] 3000 - second cabinet;

[0067] 4000 - connecting device;

[0068] 5000 - package to be tested. DETAILED DESCRIPTION

[0069] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process operations have not been described in detail in order not to unnecessarily obscure the present application.

[0070] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0071] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indications of the technical features indicated. Thus, the technical features defined with "first", "second", etc. can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0072] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0074] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0075] Before formally introducing the present application, the shelf life involved in the background art is briefly introduced as follows.

[0076] Shelf life is the period of time during which a food is stored under recommended conditions to maintain safety; ensure desirable sensory, physico-chemical and microbiological characteristics; retain any nutritional values claimed on the label. It is the period of time during which the food remains fully suitable for sale and meets the quality (attributes) specified on the label or in the product standard; beyond this period, the food is still edible for a certain period of time. Generally, the shelf life of a food depends on four factors, namely, formulation, processing, packaging and storage conditions. Changing any of these can affect the shelf life of the product - either positively or negatively. The shelf life is generally related to factors such as microbiological control, color stability, yeast and mold inhibition, taste stability, texture stability and flavor stability.

[0077] Before formally introducing the present application, the first direction and the second direction involved in the present application are described as follows: the first direction is configured as the installation direction between the to-be-tested packaging and the forced oxidation testing device, and the first direction can be any of up, down, left and right without specific limitation.

[0078] Referring to Figures 1 to 5 , Figure 1 a structural schematic diagram of a forced oxidation testing system provided by an embodiment of the present application is shown, Figure 2 a partial perspective structural schematic diagram of A in Figure 1 is shown, Figure 3 a structural schematic diagram of a forced oxidation part in Figure 2 is shown, Figure 4 a working principle schematic diagram of a forced oxidation subsystem in Figure 1 is shown, Figure 5 a structural schematic diagram of a temperature adjusting part is shown.

[0079] The forced oxidation test system provided by the embodiment of the present application comprises: a forced oxidation subsystem 1000, a first cabinet 2000, a second cabinet 3000, and a connecting device 4000; the inner cavities of adjacent forced oxidation subsystems 1000 are arranged in parallel; the forced oxidation subsystem 1000 comprises: forced oxidation parts 1100, the inner cavities of adjacent forced oxidation parts 1100 are arranged in series; the packaging to be tested 5000 is placed on the first cabinet 2000; the second cabinet 3000 is connected to the first cabinet 2000 through the connecting device 4000; the forced oxidation subsystem 1000 is installed on the second cabinet 3000, and the forced oxidation part 1100 is arranged opposite to the packaging to be tested 5000 (such as bottle packaging, can packaging, etc.); the second cabinet 3000 is configured to move along the axis of the connecting device 4000 to the direction close to the packaging to be tested 5000, and the inner cavity of the forced oxidation part 1100 is sealingly installed on the packaging to be tested 5000, so that the displacement gas in the inner cavity of the forced oxidation part 1100 penetrates and injects into the packaging to be tested 5000. Each forced oxidation subsystem 1000 of the present application can provide stable packaging to be tested 5000 with different oxygen permeation degrees for shelf life simulation test.

[0080] The displacement gas involved in the present application can be oxygen, air, etc., which can be adjusted according to the test requirements, which will not be listed one by one here. Generally, 2 to 6 forced oxidation parts 1100 in series communication can be arranged in the forced oxidation subsystem 1000. When there is no control requirement of different conditions for the forced oxidation pretreatment conditions of the packaging to be tested 5000, the forced oxidation parts 1100 involved in the oxidation test system can also be selected to be all in series, that is, only one forced oxidation subsystem 1000 is arranged, which can reduce the number of sensor devices arranged and reduce the manufacturing cost of the forced oxidation test system.

[0081] It should be noted that the forced oxidation part 1100 can be arranged in the array arrangement mode as shown, but is not limited thereto.

[0082] In an embodiment of the present application, the forced oxidation part 1100 comprises: a seat body 1110, a sealing assembly 1130, a gas displacement assembly 1140, and a displacement sensing part 1170. The seat body 1110 is provided with a seat body inner cavity 1120 in a first direction, and the seat body inner cavity 1120 is provided with a mounting port, wherein the first direction is configured as the mounting direction of the packaging to be tested 5000. The sealing assembly 1130 is arranged in the seat body inner cavity 1120 and close to one end of the mounting port; the sealing assembly 1130 is sleeved between the packaging to be tested 5000 and the seat body inner cavity 1120, and a displacement sub-cavity is formed in the seat body inner cavity 1120. The gas displacement assembly 1140 is in communication with the displacement sub-cavity, and the gas displacement assembly 1140 is configured to pass the displacement gas source into the displacement sub-cavity through the air inlet joint.

[0083] In an embodiment of the present application, the forced oxidation part 1100 further comprises a displacement sensing member 1170. In the same forced oxidation subsystem 1000, since the displacement sub-cavities of each forced oxidation part 1100 are in communication with each other, the gas conditions in the corresponding cavities are relatively stable and uniform, at this time, at least one set of displacement sensing members 1170 can be selected to obtain the temperature and / or pressure in the plurality of displacement sub-cavities in communication with each other. The displacement sensing member 1170 is installed on the seat body 1110 of any one and / or both of the forced oxidation parts 1100 in the same forced oxidation subsystem 1000, and the displacement sensing member 1170 is in communication with the displacement sub-cavity. In different forced oxidation subsystems 1000, at least one set of displacement sensing members 1170 can be selected to obtain the temperature and / or pressure in the plurality of displacement sub-cavities in communication with each other in each forced oxidation subsystem 1000.

[0084] Optionally, the displacement sensing member 1170 can select a temperature sensing member. In the same forced oxidation subsystem 1000, the temperature sensing member is configured to obtain the temperature in the plurality of displacement sub-cavities in communication with each other. The temperature sensing member can be installed on the seat body 1110 of any one of the forced oxidation parts 1100 in the same forced oxidation subsystem 1000, and the temperature sensing member is in communication with the displacement sub-cavity. In different forced oxidation subsystems 1000, one temperature sensing member can be configured respectively, or the displacement sensing member 1170, such as a pressure sensing member, required to be arranged in the forced oxidation subsystem 1000 can be selected as needed.

[0085] Optionally, the displacement sensing member 1170 can select a pressure sensing member. In the same forced oxidation subsystem 1000, the pressure sensing member is configured to obtain the pressure in the plurality of displacement sub-cavities in communication with each other. The pressure sensing member can be installed on the seat body 1110 of any one of the forced oxidation parts 1100 in the same forced oxidation subsystem 1000, and the pressure sensing member is in communication with the displacement sub-cavity. In different forced oxidation subsystems 1000, one pressure sensing member can be configured respectively, or the displacement sensing member 1170, such as a temperature sensing member, required to be arranged in the forced oxidation subsystem 1000 can be selected as needed.

[0086] Optionally, the displacement sensing member 1170 can select a temperature sensing member and a pressure sensing member, in the same forced oxidation subsystem 1000, the pressure sensing member is configured to obtain the temperature and pressure in the plurality of displacement sub-cavities in communication with each other. The temperature sensing member and the pressure sensing member can be respectively installed on the seat body 1110 of any two of the forced oxidation parts 1100 in the same forced oxidation subsystem 1000, and the temperature sensing member and the pressure sensing member are in communication with the displacement sub-cavity.

[0087] It should be noted that the replacement sensing member 1170 can also select a suitable sensing member according to needs, such as a humidity sensing member, and is not limited to a temperature sensing member and a pressure sensing member.

[0088] The sealing assembly 1130 is described in detail as follows. The sealing assembly 1130 includes a sealing member 1131, a sealing air inlet joint 1132, and a sealing air filling needle 1133. The sealing member 1131 is configured to adjust the sealing between the package to be tested 5000 and the inner cavity 1120 of the seat body 1110 through the volume change of the sealing member 1131. The sealing air inlet joint 1132 is installed on the seat body 1110. The first end of the sealing air filling needle 1133 is in communication with the sealing member 1131, and the second end of the sealing air filling needle 1133 is connected to the first end of the sealing air inlet joint 1132. The tight air source is filled into the sealing member 1131 through the sealing air filling needle by the sealing air inlet joint 1132. Specifically, the sealing member 1131 can be a sealing air bag.

[0089] Optionally, the sealing assembly 1130 further includes a first air supply member. The first air supply member is connected to the second end of the sealing air inlet joint 1132.

[0090] The first air supply member can be connected in series to the sealing air inlet joints 1132 of the forced oxidation parts 1100 in the same forced oxidation subsystem 1000, so as to improve the air filling efficiency and synchronization of the sealing member 1131 assembly.

[0091] In an embodiment of the present application, an air sealing placeholder device is further included. When the number of the packages to be tested 5000 actually placed in the forced oxidation test system is less than the maximum processing number preset in the forced oxidation test system, the installation of the sealing placeholder device can avoid the damage caused by the large deformation of the sealing member 1131 in the empty position, and at the same time, the replacement sub-cavity of the forced oxidation part 1100 is isolated from the air outside.

[0092] The gas replacement assembly 1140 is described in detail as follows. The gas replacement assembly 1140 includes a replacement air inlet joint 1141 and a replacement air outlet joint 1142. The replacement air inlet joint 1141 is arranged on the first side of the seat body 1110, and the replacement air inlet joint 1141 is in communication with the replacement sub-cavity, and the replacement gas is filled into the replacement sub-cavity by the replacement air inlet joint 1141. The replacement air outlet joint 1142 is arranged on the second side opposite to the first side of the seat body 1110, and the replacement air outlet joint 1142 is in communication with the replacement sub-cavity.

[0093] Optionally, the gas replacement assembly 1140 further includes a second air supply member. The second air supply member is connected to the replacement air inlet joint 1141, and the second air supply member is configured to introduce the replacement gas into the replacement sub-cavity through the replacement air inlet joint 1141.

[0094] In an embodiment of the present application, the temperature adjusting part 1150 is further included. The temperature adjusting part 1150 is installed between the second gas supply part and the replacement gas inlet joint 1141, and is configured to adjust the temperature of the replacement gas entering the inner cavity of the forced oxidation part 1100.

[0095] Further, the temperature adjusting part 1150 includes a heater 1151, an inlet air coil 1152, a dryer 1153, and a temperature sensor. The heater 1151 is installed on a coil support 1154. The inlet air coil 1152 is installed in a coil shape on the heater 1151; a first end of the inlet air coil 1152 is connected with the second gas supply part, and a second end of the inlet air coil 1152 is connected with the replacement gas inlet joint 1141. The dryer 1153 is installed on the inlet air coil 1152 at a position close to the second end of the inlet air coil 1152; and the temperature sensor is connected with the inlet air coil 1152. The temperature of the gas in the inlet air coil 1152 can be adjusted by adjusting the output power of the heater 1151 and the inlet air flow rate. The heater 1151 can be a PTC heater, which is beneficial to reduce the heat dissipation pressure inside the instrument and can more accurately control the temperature.

[0096] In an embodiment of the present application, the pressure adjusting part 1160 is further included. The pressure adjusting part 1160 is configured to adjust the pressure of the replacement gas entering the inner cavity of the forced oxidation part 1100.

[0097] Further, the pressure adjusting part 1160 includes an inlet air adjusting valve 1161 and an outlet air adjusting valve 1162. The inlet air adjusting valve 1161 is connected with the replacement gas inlet joint 1141 through an air pipe; and the outlet air adjusting valve 1162 is connected with the replacement gas outlet joint 1142 through an air pipe. The pressure of the inner cavity of the forced oxidation part 1100 can be adjusted by adjusting the opening degree of the inlet air adjusting valve 1161 and the outlet air adjusting valve 1162.

[0098] It can be understood that an air charging adjusting valve can also be arranged in the sealing assembly 1130, specifically, the air charging adjusting valve is installed between the first gas supply part and the sealing air charging needle 1133, and is used to adjust the air pressure in the sealing part 1131 by adjusting the opening degree of the air charging adjusting valve.

[0099] Optionally, a bypass pipe is arranged at the rear end of the air pipe of the outlet air adjusting valve 1162, and the pipe diameter of the bypass pipe controlled by the outlet air adjusting valve 1162 should be within 1 / 2 of the main pipe, so as to reduce the single air exhaust amount, and thus more accurately adjust the pressure of the inner cavity of the forced oxidation part.

[0100] In an embodiment of the present application, the temperature adjusting part 1150 and the pressure adjusting part 1160 can be arranged at the same time.

[0101] In an embodiment of the present application, a positioning groove is formed on the first cabinet 2000, and the packaging to be tested 5000 is placed in the positioning groove. The positioning groove can be a stepped or multi-layer structure to adapt to different specifications of the packaging to be tested 5000, thereby optimizing the versatility of the forced oxidation test system.

[0102] In an embodiment of the present application, a ventilation hole is formed at the bottom of the positioning groove. When the refrigeration device arranged in the first cabinet 2000 is working, the air temperature in the first cabinet 2000 can be reduced to a set temperature, and at the same time, the refrigeration circulating air pump is running to cool the air in the positioning groove through the ventilation hole, so that the part of the sample bottle located in the positioning groove can be kept at a lower temperature.

[0103] In an embodiment of the present application, the connecting device 4000 comprises a driving motor, a synchronous transmission shaft and an extension rod. The driving motor is installed in the first cabinet 2000; the synchronous transmission shaft is connected with the output end of the driving motor; the first end of the fixed section of the extension rod is connected with the first cabinet 2000, the second end of the fixed section of the extension rod is connected with the first end of the movable section of the extension rod, and the second end of the movable section of the extension rod is connected with the second cabinet 3000; the synchronous transmission shaft is connected with the second end of the fixed section of the extension rod or the first end of the movable section of the extension rod. The driving motor drives the synchronous transmission shaft and the movable section of the extension rod to ascend and descend, so that the second cabinet 3000 reaches a set height.

[0104] The control process of the forced oxidation test system provided by an embodiment of the present application mainly comprises a travel memory step, a sample placing step, a test execution step, an unloading step and a system resetting step.

[0105] When the travel memory step is running, the second cabinet 3000 can be manually lifted, and the empty travel and the test travel can be executed according to the travel memory instruction. The empty travel is the action travel of the connecting device 4000 when the forced oxidation test system is reset, and the test travel is the action travel of the connecting device 4000 when the test execution step is executed. Specifically, the travel memory instruction can be selected by clicking the instruction button corresponding to the travel memory instruction on the control panel arranged on the second cabinet 3000. The control panel can be a touch panel, and the instruction button corresponding to the travel memory instruction can be directly clicked on the touch panel.

[0106] The sample placing step generally manually places the packaging to be tested 5000 (bottled packaging, canned packaging, etc.) in the first cabinet 2000. It should be noted that the packaging to be tested 5000 is placed in the positioning groove to ensure stable placement of the packaging to be tested 5000.

[0107] The test execution step comprises, in sequence, an aeration and sealing sub-step, a gas replacement sub-step and a test execution sub-step.

[0108] First, the air charging sub-step is run, the first air supply charges the seal 1131 to connect the seal between the packaging 5000 to be tested and the seat cavity 1120, and a replacement sub-cavity is formed in the seat cavity 1120. For example, the air charging pressure of the first air supply can be set to 0.09 MPa.

[0109] Second, the gas replacement sub-step is run, the replacement gas source is introduced into the replacement sub-cavity to replace the gas in the replacement sub-cavity. As preferred, each parallel group can be replaced simultaneously or in groups, and the replacement flow rate can be set to 10 ml / min, or can be set according to different seal assembly models.

[0110] Third, the test execution sub-step is run, the replacement gas in the replacement sub-cavity is maintained, specifically, the replacement gas is maintained at a constant temperature and pressure until the permeation degree of the packaging 5000 to be tested meets the requirements of the shelf life simulation test. The constant temperature is adjusted by the heating device installed in the second machine box 3000 and the refrigeration device installed in the first machine box 2000. The constant pressure is maintained by adjusting the opening of the gas valve to ensure that the replacement sub-cavity is at a constant pressure. It should be noted that each parallel group can be set to the same pressure or different groups can be set to different pressures to meet different test conditions.

[0111] After the test execution step is completed, the unloading step is run, which includes a pressure unloading sub-step, a temperature unloading sub-step, and a reset sub-step.

[0112] When the pressure unloading sub-step is run, the replacement sub-cavity is depressurized by adjusting the inlet regulating valve 1161 and the exhaust regulating valve.

[0113] When the temperature unloading sub-step is run, the gas in the replacement sub-cavity is purged to stop running when the temperature reaches the set value. For example, the purge flow rate can be set to 10 ml / min, or can be set according to different seal assembly models.

[0114] When the reset sub-step is run, the connecting device 4000 is reset to the empty stroke state. Thus, the control process of the single forced oxidation test system is completed.

[0115] The technical features of the above-described embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0116] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A forced oxidation test system, characterized by, The package testing device comprises: a forced oxidation subsystem (1000), inner cavities of adjacent forced oxidation subsystems (1000) are arranged in parallel; the forced oxidation subsystem (1000) comprises: a forced oxidation part (1100), inner cavities of adjacent forced oxidation parts (1100) are arranged in series; a pressure regulating part (1160) configured to regulate the pressure of the displacement gas entering the inner cavity of the forced oxidation part (1100); a first machine case (2000) on which the package to be tested (5000) is placed; and a second machine case (3000) connected with the first machine case (2000) through a connecting device (4000); the forced oxidation subsystem (1000) is installed on the second machine case (3000), and the forced oxidation part (1100) is arranged opposite to the package to be tested (5000); the second machine case (3000) is configured to act along the axis of the connecting device (4000) to the direction close to the package to be tested (5000) to seal the inner cavity of the forced oxidation part (1100) to the package to be tested (5000), so that the displacement gas in the inner cavity of the forced oxidation part (1100) penetrates into the package to be tested (5000); the forced oxidation part (1100) comprises: a seat body (1110) with a seat body inner cavity (1120) opened in a first direction, and the seat body inner cavity (1120) is provided with a mounting port, wherein the first direction is configured as the mounting direction of the package to be tested (5000); a sealing assembly (1130) arranged at one end of the seat body inner cavity (1120) close to the mounting port; the sealing assembly (1130) is sleeved between the package to be tested (5000) and the seat body inner cavity (1120) to form a displacement sub-cavity in the seat body inner cavity (1120); and a gas displacement assembly (1140) connected with the displacement sub-cavity, the gas displacement assembly (1140) is configured to introduce a displacement gas source into the displacement sub-cavity through a ventilation connector; the sealing assembly (1130) comprises: a sealing element (1131) configured to adjust the sealing between the package to be tested (5000) and the seat body inner cavity (1120) through the volume change of the sealing element (1131); a sealing air inlet connector (1132) connected with the seat body (1110); and a sealing air filling needle (1133), a first end of the sealing air filling needle (1133) is connected with the sealing element (1131), and a second end of the sealing air filling needle (1133) is connected with a first end of the sealing air inlet connector (1132); a tight gas source is filled into the sealing element (1131) through the sealing air inlet connector (1132) and the sealing air filling needle (1133).

2. The forced oxidation test system of claim 1, wherein, the forced oxidation part (1100) further comprises: The displacement sensing member (1170) is arranged in the same forced oxidation subsystem (1000), and is configured to acquire the temperature and / or pressure in the plurality of mutually connected displacement sub-cavities; the displacement sensing member (1170) is mounted on the seat body (1110) of any one and / or both of the forced oxidation portions (1100) in the same forced oxidation subsystem (1000), and is in communication with the displacement sub-cavities.

3. The forced oxidation test system of claim 1, wherein, The sealing assembly (1130) further comprises a first gas supply member connected to the second end of the sealing gas inlet joint (1132).

4. The forced oxidation test system of claim 3, wherein, The sealing assembly (1130) is provided with a gas charging adjusting valve mounted between the first gas supply member and the sealing gas charging needle (1133) for adjusting the gas pressure in the sealing member (1131) through the opening degree adjustment of the gas charging adjusting valve.

5. The forced oxidation test system of claim 1, wherein, The gas displacement assembly (1140) comprises: A displacement gas inlet joint (1141) arranged on the first side of the seat body (1110) and in communication with the displacement sub-cavities, and displacement gas is charged into the displacement sub-cavities through the displacement gas inlet joint (1141); and A displacement gas outlet joint (1142) arranged on the second side opposite to the first side of the seat body (1110) and in communication with the displacement sub-cavities.

6. The forced oxidation test system of claim 5, wherein, The forced oxidation subsystem (1000) further comprises: A temperature adjusting portion (1150) mounted at the input end of the displacement gas inlet joint (1141), configured to adjust the temperature of the displacement gas entering the inner cavity of the forced oxidation portion (1100); the temperature adjusting portion (1150) comprises: A heater (1151) mounted on a coil bracket (1154); An inlet coil (1152) spirally mounted on the heater (1151); one end of the inlet coil (1152) is connected to the input end of the displacement gas inlet joint (1141), and the displacement gas is charged from the other end of the inlet coil (1152); A dryer (1153) mounted on the inlet coil (1152) near one end of the inlet coil (1152); and A temperature sensor connected to the inlet coil (1152).

7. The forced oxidation test system of claim 5, wherein, The pressure adjusting portion (1160) comprises: An inlet adjusting valve (1161) connected to the displacement gas inlet joint (1141) through a gas pipe; and An exhaust adjusting valve (1162) connected to the displacement gas outlet joint (1142) through the gas pipe.

8. The forced oxidation test system of any one of claims 1 to 7, wherein, A positioning groove is formed on the first case (2000), and the packaging to be tested (5000) is placed in the positioning groove.

9. The forced oxidation test system of claim 8, wherein, A ventilation hole is formed at the bottom of the positioning groove.

10. The forced oxidation test system of any one of claims 1 to 7, wherein, The connecting device (4000) comprises: a driving motor installed in the first machine case (2000); a synchronous transmission shaft connected with an output end of the driving motor; and a telescopic rod, a first end of a fixed section of the telescopic rod being connected with the first machine case (2000), a second end of the fixed section of the telescopic rod being connected with a first end of a movable section of the telescopic rod, and a second end of the movable section of the telescopic rod being connected with the second machine case (3000); the synchronous transmission shaft being connected with the second end of the fixed section of the telescopic rod or the first end of the movable section of the telescopic rod.

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