Paper diaper production quality inspection equipment and quality detection method

Abstract

The application relates to the technical field of paper diaper production, in particular to paper diaper production quality inspection equipment and a quality inspection method. The paper diaper production quality inspection equipment comprises a quality inspection box, an inner frame is fixedly installed on the inner wall of the quality inspection box, an air conditioner body, an air pump and a water pump are fixedly installed on the back of the quality inspection box, one end of an air outlet of the air pump is fixedly installed with a gas distribution pipe, a liquid storage cavity is fixedly arranged at the inner bottom of the quality inspection box, one end of a liquid inlet of the water pump is fixedly communicated with the liquid storage cavity, an injection mechanism driven by a screw rod driving module a and the screw rod driving module b are fixedly installed on the upper part of the inner frame, and one end of a liquid outlet of the water pump is fixedly communicated with the injection mechanism. The paper diaper production quality inspection equipment has the beneficial effects that the injection mechanism, the clamping mechanism, the electric measurement module and the extrusion module are arranged, the quality inspection equipment can efficiently complete the quality inspection work of the paper diaper, and the quality inspection equipment can integrally realize the elasticity detection, the water absorption performance detection and the water retention performance detection of the paper diaper during the detection.

Description

Technical Field

[0001] This invention relates to the field of diaper manufacturing technology, specifically to a diaper manufacturing quality inspection equipment and quality testing method. Background Technology

[0002] The core technology of diapers is the core. Diapers are disposable products that can be used once and then discarded. They are made of materials such as non-woven fabric, toilet paper, fluff pulp, super absorbent polymer, PE film, and elastic bands. There are two types: one for infants and one for adults. Diapers are convenient to carry, do not need to be washed, and are easy to change, so they are becoming increasingly popular among young parents. During the diaper production process, diapers need to be tested, and only those that pass the test can be sent to the market.

[0003] In the prior art, various testing devices for diapers have emerged. For example, patent document CN108732079A discloses a testing device for diaper production that is easy to fix. This testing device is equipped with a water outlet pipe, a paper sheet, and an air outlet pipe. Air is sprayed onto the diaper body through the air outlet pipe, and the air permeability of the diaper body can be easily checked by observing whether the paper sheet shakes. Water is sprayed onto the diaper body through the water outlet pipe, and the absorbency of the diaper body can be determined by recording the time when the diaper body begins to absorb water. The operation is relatively simple. However, the above-mentioned diaper testing device has a relatively simple testing function and cannot monitor multiple surface variables of the diaper during testing, resulting in low accuracy. Based on this, the present invention provides a diaper production quality inspection equipment and quality testing method to solve the problems mentioned in the background art. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a quality inspection equipment and method for diaper production. This solves the problem that existing diaper testing devices have relatively simple testing functions and cannot monitor multiple surface variables of diapers during testing, resulting in low accuracy.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A quality inspection equipment for diaper production includes a quality inspection box. An inner frame is fixedly installed on the inner wall of the quality inspection box. An air conditioner body, an air pump, and a water pump are fixedly installed on the back of the quality inspection box. A gas distribution pipe is fixedly installed at one end of the air outlet of the air pump. A liquid storage chamber is fixedly opened at the bottom of the quality inspection box. One end of the liquid inlet of the water pump is fixedly connected to the liquid storage chamber. A liquid injection mechanism driven by a screw drive module a and a screw drive module b are fixedly installed on the upper part of the inner frame. One end of the liquid outlet of the water pump is fixedly connected to the liquid injection mechanism. A movable frame is driven to the periphery of the screw drive module b. A vertically arranged screw adjustment module is fixedly installed on the inner wall of the movable frame. Two symmetrically arranged and adjustable pressure beams are driven to the periphery of the screw adjustment module. A set of electrical testing modules and a squeezing module are installed on the surface of each of the two pressure beams. A clamping mechanism is installed at the bottom of the inner frame. A diaper to be inspected is clamped on the inner wall of the clamping mechanism.

[0006] The beneficial effects of this invention are:

[0007] 1) By setting up the liquid injection mechanism, clamping mechanism, electrical testing module and squeezing module, this device can efficiently complete the quality inspection of diapers. Moreover, during the inspection, this device can integrate the elasticity test, absorbency test and water retention test of diapers. Through the realization of the above-mentioned multiple testing functions, the multifunctionality of this device is effectively improved.

[0008] 2) By setting up multiple electrical measurement modules, multi-point positioning monitoring of the upper and lower surfaces of the diaper can be achieved during diaper testing. The realization of the above-mentioned multi-point positioning monitoring function can effectively improve the detection accuracy of this device. Furthermore, the realization of the multi-point positioning monitoring function can effectively monitor the surface properties, temperature, and humidity change trends of the diaper during the testing operation. The realization of the above-mentioned trend monitoring effect can further improve the detection accuracy of this device.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the clamping mechanism includes a fixed clamp, a motor, a vertically arranged transmission screw, and a set of guide grooves arranged in a circumferential array and opened inside the inner frame. The tail end of the transmission screw is rotatably connected to the inner frame, and the output shaft end of the motor is fixedly connected to the transmission screw. A clamping ring is drivenly connected to the circumferential side of the transmission screw. A horizontally arranged guide post is fixedly installed on the inner wall of the guide groove. An active clamping seat and a driven clamping seat are slidably connected to the circumferential side of the guide post, respectively. The circumferential side of both the active and driven clamping seats are slidably connected to the guide groove. A connecting rod is hinged between the opposing surfaces of the clamp and the clamping ring. A compensating spring is sleeved on the circumferential side of the guide post at the position corresponding to the position between the active clamp and the driven clamp. A horizontally arranged force measuring frame is fixedly installed on the back of the fixed clamp. The circumferential side of the force measuring frame is slidably connected to the fixed clamp. A pressure sensor is fixedly installed on the side of the force measuring frame opposite to the driven clamp. A movable clamp is slidably connected to the inner wall of the fixed clamp. A pressure adjusting screw is threadedly connected to the inner wall of the fixed clamp. The bottom end of the pressure adjusting screw is rotatably connected to the movable clamp. The fixed clamp has a "U" shaped structure.

[0011] Furthermore, the fixed clamp has a "U"-shaped structure, the movable clamp has a flat plate structure, and the movable clamp is located inside the fixed clamp.

[0012] Furthermore, the injection mechanism includes an injection seat, the inner wall of which is connected to the lead screw drive module a, the peripheral side of which is slidably connected to the inner frame, a vertically arranged injection pipe is fixedly installed on the inner wall of the injection seat, a flexible tube is fixedly connected to the peripheral side of the injection pipe, one end of the inlet of the flexible tube is fixedly connected to a water pump, a solenoid valve and a flow meter are fixedly installed inside the flexible tube from front to back, a heating chamber is fixedly opened inside the injection pipe, a heating rod is fixedly installed on the inner wall of the heating chamber, a temperature probe is fixedly installed on the peripheral side of the injection pipe, and the monitoring end of the temperature probe extends into the interior of the heating chamber.

[0013] Furthermore, the lead screw adjustment module includes an adjustment lead screw and an adjustment motor. Both ends of the adjustment lead screw are rotatably connected to the detection pole frame. The top surface of the adjustment motor is fixedly connected to the moving frame. The output shaft of the adjustment motor is driven by the adjustment lead screw. The peripheral side of the adjustment lead screw is symmetrically provided with a forward thread and a reverse thread. The peripheral side of the forward thread and the reverse thread are respectively driven by two pressure beams.

[0014] Furthermore, the electrical testing module includes a pressure distribution pipe, an electrical testing frame, and a set of vertically arranged sleeves. The inner wall of the electrical testing frame is slidably connected to the pressure beam. A locking knob that mates with the pressure beam is threaded onto the back of the electrical testing frame. The tail end of the pressure distribution pipe is fixedly connected to the air distribution pipe. An electromagnetic air valve and an air pressure probe are respectively installed at the connection between the pressure distribution pipe and the air distribution pipe. The circumferential side of each sleeve is fixedly connected to the electrical testing frame. A piston seat is slidably connected to the inner wall of the sleeve. An air thrust chamber is fixedly arranged between the top surface of the piston seat and the opposite surface of the sleeve. The top surface of the air thrust chamber is fixedly connected to the pressure distribution pipe. A pressure rod is fixedly installed on the bottom surface of the piston seat. A vertically arranged temperature and humidity probe is fixedly installed at the bottom end of the pressure rod. A clamping spring is sleeved on the circumferential side of the pressure rod.

[0015] Furthermore, the extrusion module includes a support plate and a dewatering frame fixedly connected to the pressure beam. A set of vertically arranged extrusion push rods are installed between the opposing surfaces of the support plate and the dewatering frame. A pressure sensor is fixedly installed at the connection between the extrusion push rods and the dewatering frame.

[0016] Furthermore, the end face of the quality inspection box is fixedly provided with a 45° inclined surface, and a box door is hinged to the inner wall of the 45° inclined surface. The box door is made of transparent material. A central control panel is fixedly installed on the top of the quality inspection box, and a water supply pipe and a waste discharge pipe communicating with the liquid storage chamber are fixedly installed on the back of the quality inspection box.

[0017] Furthermore, both the lead screw drive module a and the lead screw drive module b include a drive motor and a horizontally arranged guide lead screw. Both ends of the guide lead screw are rotatably connected to the inner frame. One surface of the drive motor is fixedly connected to the inner frame. The output shaft end of the drive motor is fixedly connected to the guide lead screw. The inner walls of the movable frame and the liquid injection seat are both drively connected to the guide lead screw at adjacent positions.

[0018] Furthermore, a quality inspection method for diaper production quality inspection equipment includes the following steps:

[0019] SS001 Elasticity Test: When performing elasticity testing, the chamber door is opened, and the diapers to be tested are clamped and arranged inside the quality inspection chamber through the cooperation of the fixed clamp and the moving clamp. After the diapers to be tested are clamped, the air conditioning unit is set to maintain the internal temperature and humidity of the quality inspection chamber. During elasticity testing, the two pressure beams are moved away from the diapers to be tested by controlling the lead screw adjustment module. During the test, the pressure sensor is automatically zeroed first. After zeroing, the motor slowly outputs the rotation speed and moves the active clamp slowly towards the driven clamp. During the movement of the active clamp, the diapers to be tested are gradually subjected to tension, and the pressure sensor generates monitoring data. When any pressure sensor produces a sudden change in value, the maximum peak value of the pressure sensor is recorded, and then the elasticity threshold data of the diapers to be tested is measured.

[0020] SS002, Absorbency Test: Following step SS001, a new diaper to be tested is re-clamped inside the quality inspection box. After the diaper is clamped, four clamps are used to tighten and limit the diaper to the set tension. Before the test, the central control panel is first used to set the total volume, injection rate, injection pressure, injection temperature, and injection position of the injection tube. After the central control panel is set, the two pressure beams are brought closer together, ensuring that the monitoring end of the temperature and humidity probe is in close contact with the surface of the diaper. Afterwards, the temperature and humidity probes are automatically zeroed. After zeroing, the injection tube is filled with test water in a preset state. After the test water is added, the central control panel periodically collects the monitoring data of each temperature and humidity probe, and then detects the temperature change trend, humidity change trend and maximum absorbent volume of the double surface of the diaper under test. After the test of a single diaper is completed, a new diaper is replaced to detect the performance change trend of the diaper under test under different injection rates, different injection pressures, different injection temperatures and different injection positions.

[0021] SS003, Water Retention Performance Test: After step SS002, a new diaper to be tested is re-clamped inside the quality inspection box. After the diaper to be tested is clamped, four clamps are used to tighten and limit the diaper to be tested at a set tension. Before the test, a preset amount of liquid is injected into the diaper to be tested through the injection tube to keep the diaper to be tested in a set absorbent state. After the diaper to be tested is kept in an absorbent state, two squeezing modules squeeze synchronously from top to bottom and apply pressure step by step. When the diaper to be tested dehydrates, the feedback value of the pressure sensor at the squeezing push rod is recorded to help calculate the water retention performance of the diaper to be tested. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a diaper production quality inspection device according to the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the cross-sectional structure;

[0024] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0025] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the local structure at point B;

[0026] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point C in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of lead screw drive module a and lead screw drive module b of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the hose and injection seat of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the mobile frame and the air distribution pipe of the present invention;

[0030] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the local structure at point D;

[0031] Figure 10 This is a schematic diagram of the pressure distribution pipe and sleeve of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure of the diaper to be tested and the connecting rod of the present invention;

[0033] Figure 12 For the present invention Figure 11 A magnified schematic diagram of the structure at point E in the middle.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Quality inspection box; 2. Inner frame; 3. Air conditioner body; 4. Air pump; 5. Water pump; 6. Gas distribution pipe; 7. Liquid storage chamber; 8. Screw drive module a; 9. Screw drive module b; 10. Moving frame; 11. Screw pitch adjustment module; 12. Pressure beam; 13. Diapers to be inspected; 14. Fixed clamp; 15. Motor; 16. Transmission screw; 17. Clamping ring; 18. Guide post; 19. Active clamp; 20. Driven clamp; 21. Connecting rod 22. Compensating spring; 23. Force measuring frame; 24. Pressure sensor; 25. Movable clamp; 26. Pressure adjusting screw; 27. Liquid injection seat; 28. Liquid injection tube; 29. ​​Hoses; 30. Heating rod; 31. Temperature probe; 32. Pressure distribution tube; 33. Electrical measuring frame; 34. Sleeve; 35. Pressure rod; 36. Temperature and humidity probe; 37. Clamping spring; 38. Extrusion push rod; 39. Box door; 40. Central control panel; 41. Dehydration rack. Detailed Implementation

[0036] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0037] The present invention provides the following preferred embodiments.

[0038] like Figure 1-12As shown, a quality inspection device for diaper production includes a quality inspection box 1. The end face of the quality inspection box 1 is fixedly provided with a 45° inclined surface. The inner wall of the 45° inclined surface is hinged with a box door 39. The box door 39 is made of transparent material. A central control panel 40 is fixedly installed on the top of the quality inspection box 1. The central control panel 40 is used to control the working status of the corresponding electrical mechanism in this device.

[0039] An inner frame 2 is fixedly installed on the inner wall of the quality inspection box 1. A clamping mechanism is installed at the bottom of the inner frame 2. The inner wall of the clamping mechanism holds the diapers 13 to be inspected.

[0040] The clamping mechanism includes a fixed clamp 14, a motor 15, a vertically arranged transmission screw 16, and a set of guide grooves arranged in a circular array and opened inside the inner frame 2. The tail end of the transmission screw 16 is rotatably connected to the inner frame 2, the output shaft end of the motor 15 is fixedly connected to the transmission screw 16, and a clamping ring 17 is drivenly connected to the circumferential side of the transmission screw 16. A horizontally arranged guide post 18 is fixedly installed on the inner wall of the guide groove. An active clamping seat 19 and a driven clamping seat 20 are slidably connected to the circumferential side of the guide post 18, and the circumferential side of both the active clamping seat 19 and the driven clamping seat 20 are slidably connected to the guide groove.

[0041] A connecting rod 21 is hinged between the opposing surfaces of the active clamp 19 and the clamping ring 17, and a compensating spring 22 is sleeved on the circumferential side of the guide post 18 at the position corresponding to the position between the active clamp 19 and the driven clamp 20.

[0042] A horizontally arranged force measuring frame 23 is fixedly installed on the back of the fixed clamp 14. The peripheral side of the force measuring frame 23 is slidably connected to the fixed clamp 14. A pressure sensor 24 is fixedly installed on the side of the force measuring frame 23 opposite to the driven clamp 20. The pressure sensor 24 is used to assist in monitoring the pressure data given to the force measuring frame 23 by the driven clamp 20. By monitoring the data of the pressure sensor 24, the tensile strength of the diaper can be detected.

[0043] During operation, the pressure sensor 24 feeds back the monitored real-time signal to the central control panel 40;

[0044] A movable clamp 25 is slidably connected to the inner wall of the fixed clamp 14. The fixed clamp 14 has a "U"-shaped structure, and the movable clamp 25 has a flat plate structure. The movable clamp 25 is located inside the fixed clamp 14. A pressure adjusting screw 26 is threadedly connected to the inner wall of the fixed clamp 14. The bottom end of the pressure adjusting screw 26 is rotatably connected to the movable clamp 25. The fixed clamp 14 has a "U"-shaped structure.

[0045] The back of the quality inspection box 1 is fixedly installed with an air conditioner body 3, an air pump 4 and a water pump 5. One end of the air outlet of the air pump 4 is fixedly installed with a gas distribution pipe 6. The bottom of the quality inspection box 1 is fixedly opened with a liquid storage chamber 7. The back of the quality inspection box 1 is fixedly installed with a water supply pipe and a waste discharge pipe that are connected to the liquid storage chamber 7. Valves are installed inside the water supply pipe and the waste discharge pipe.

[0046] One end of the inlet of the water pump 5 is fixedly connected to the liquid storage chamber 7. The upper part of the inner frame 2 is respectively fixedly installed with an injection mechanism driven by a screw drive module a8 and a screw drive module b9.

[0047] Both lead screw drive modules a8 and b9 include a drive motor and a horizontally arranged guide lead screw. Both ends of the guide lead screw are rotatably connected to the inner frame 2. One surface of the drive motor is fixedly connected to the inner frame 2. The output shaft end of the drive motor is fixedly connected to the guide lead screw. One end of the water pump 5 outlet is fixedly connected to the injection mechanism.

[0048] The liquid injection mechanism includes a liquid injection seat 27. The inner wall of the liquid injection seat 27 is connected to the lead screw drive module a8. The peripheral side of the liquid injection seat 27 is slidably connected to the inner frame 2. A vertically arranged liquid injection pipe 28 is fixedly installed on the inner wall of the liquid injection seat 27. A flexible hose 29 is fixedly connected to the peripheral side of the liquid injection pipe 28. One end of the liquid inlet of the flexible hose 29 is fixedly connected to the water pump 5.

[0049] The inside of the hose 29 is fixedly installed with a solenoid valve and a flow meter from front to back. The inside of the injection tube 28 is fixedly opened with a heating chamber. The inner wall of the heating chamber is fixedly installed with an electric heating rod 30. The periphery of the injection tube 28 is fixedly installed with a temperature probe 31. The monitoring end of the temperature probe 31 extends into the inside of the heating chamber. The temperature probe 31 is used to monitor the temperature data inside the heating chamber.

[0050] By setting up the temperature probe 31 and the heating rod 30, test liquids at different temperatures can be created during the testing process.

[0051] By setting up a flow meter, solenoid valve, and water pump 5, test liquids with different pressures and flow rates can be created during the testing process.

[0052] When the temperature probe 31 and the flow meter are working, the monitored signals are fed back to the central control panel 40 in real time.

[0053] The peripheral side of the lead screw drive module b9 is connected to the movable frame 10, and the inner walls of the movable frame 10 and the liquid injection seat 27 are both connected to the guide lead screw at the adjacent position.

[0054] The inner wall of the movable frame 10 is fixedly installed with a vertically arranged screw adjustment module 11. The peripheral side of the screw adjustment module 11 is connected to two symmetrically arranged and adjustable pressure beams 12.

[0055] The lead screw pitch adjustment module 11 includes an adjustment lead screw and an adjustment motor. Both ends of the adjustment lead screw are rotatably connected to the detection pole frame. The top surface of the adjustment motor is fixedly connected to the moving frame 10. The output shaft end of the adjustment motor is driven by the adjustment lead screw. The circumferential side of the adjustment lead screw is symmetrically provided with a forward thread and a reverse thread. The circumferential side of the forward thread and the reverse thread are respectively driven by the two pressure beams 12. Through the setting of the forward thread and the reverse thread, the two pressure beams 12 can synchronously approach each other or synchronously move away from each other, thereby changing the distance between the two pressure beams 12.

[0056] Each of the two pressure beams 12 is equipped with a set of electrical testing modules and a pressing module.

[0057] The electrical testing module includes a pressure distribution pipe 32, an electrical testing frame 33, and a set of vertically arranged sleeves 34. The inner wall of the electrical testing frame 33 is slidably connected to the pressure beam 12. The back of the electrical testing frame 33 is threaded with a locking knob that cooperates with the pressure beam 12. The tail end of the pressure distribution pipe 32 is fixedly connected to the air distribution pipe 6. An electromagnetic air valve and an air pressure probe are respectively installed at the connection between the pressure distribution pipe 32 and the air distribution pipe 6.

[0058] Each sleeve 34 has its circumferential side fixedly connected to the electrical testing frame 33. A piston seat is slidably connected to the inner wall of the sleeve 34. An air-push chamber is fixedly provided between the top surface of the piston seat and the opposite surface of the sleeve 34. The top surface of the air-push chamber is fixedly connected to the pressure distribution pipe 32. A pressure rod 35 is fixedly installed on the bottom surface of the piston seat. A vertically arranged temperature and humidity probe 36 is fixedly installed at the bottom end of the pressure rod 35. A clamping spring 37 is sleeved on the circumferential side of the pressure rod 35. Through the inflatable structure of the clamping spring 37, the air pressure probe and the air-push chamber, the monitoring end of the temperature and humidity probe 36 is made to fully contact the surface of the diaper 13 to be tested.

[0059] The extrusion module includes a support plate and a dehydration frame 41 fixedly connected to the pressure beam 12. A set of vertically arranged extrusion push rods 38 are installed between the opposing surfaces of the support plate and the dehydration frame 41. A pressure sensor is fixedly installed at the connection between the extrusion push rods 38 and the dehydration frame 41. The function of the pressure sensor is to monitor the pressure data of the extrusion push rods 38 to the dehydration frame 41 in real time.

[0060] The air conditioner body 3, pressure sensor, temperature and humidity probe 36, temperature probe 31 and pressure sensor 24 can all be customized or selected according to actual needs.

[0061] A quality inspection method for a diaper production quality inspection equipment includes the following steps:

[0062] SS001 Elasticity Test: When performing elasticity testing, the chamber door 39 is opened, and the fixed clamp 14 and the moving clamp 25 work together to clamp the diaper to be tested 13 inside the quality inspection chamber 1. After the diaper to be tested 13 is clamped, the air conditioner body 3 is set to maintain the internal temperature and humidity of the quality inspection chamber 1 at the set test temperature and humidity. During elasticity testing, the screw adjustment module 11 is controlled to make the two pressure beams 12 move away from the diaper to be tested 13. During the test, the pressure sensor 24 is automatically zeroed first. After the zeroing is completed, the motor 15 slowly outputs the rotation speed and moves the active clamp 19 slowly towards the driven clamp 20. During the movement of the active clamp 19, the diaper to be tested 13 is gradually subjected to tension, and the pressure sensor 24 generates monitoring data. When any pressure sensor 24 generates a sudden value, the maximum peak value of the pressure sensor 24 is recorded, and then the elasticity threshold data of the diaper to be tested 13 is measured.

[0063] SS002, Absorbency Test: Following step SS001, a newly installed diaper 13 is re-clamped inside the quality inspection box 1. After the diaper 13 is clamped, four clamping clamps 14 are used to tighten and limit the diaper 13 to a set tension. Before the test, the central control panel 40 is used to set the total volume, injection rate, injection pressure, injection temperature, and injection position of the injection tube 28. After the central control panel 40 is set, the two pressure beams 12 are brought closer together, and the monitoring end of the temperature and humidity probe 36 is kept in close contact with the surface of the diaper 13. After being attached, the temperature and humidity probe 36 is automatically zeroed. After zeroing, the injection tube 28 adds test water in a preset state. After the test water is added, the central control panel 40 periodically collects the monitoring data of each temperature and humidity probe 36, and then detects the temperature change trend, humidity change trend and maximum absorbent volume of the dual surfaces of the diaper under test 13. After the test of a single diaper under test 13 is completed, a new diaper under test 13 is replaced to detect the performance change trend of the diaper under test 13 under different injection rates, different injection pressures, different injection temperatures and different injection positions.

[0064] SS003, Water Retention Performance Test: After step SS002, a newly installed diaper 13 to be tested is re-clamped inside the quality inspection box 1. After the diaper 13 is clamped, four clamping clamps 14 tighten and limit the diaper 13 to a set tension. Before the test, a preset amount of liquid is injected into the diaper 13 through the injection tube 28 to keep the diaper 13 in a set absorbent state. After the diaper 13 is in an absorbent state, two squeezing modules squeeze synchronously from top to bottom and apply pressure step by step. When the diaper 13 dehydrates, the feedback value of the pressure sensor at the squeezing push rod 38 is recorded to help calculate the water retention performance of the diaper 13.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quality inspection device for diaper production, comprising a quality inspection box (1), characterized in that, An inner frame (2) is fixedly installed on the inner wall of the quality inspection box (1). An air conditioner body (3), an air pump (4), and a water pump (5) are fixedly installed on the back of the quality inspection box (1). A gas distribution pipe (6) is fixedly installed at one end of the air outlet of the air pump (4). A liquid storage chamber (7) is fixedly opened at the bottom of the quality inspection box (1). One end of the liquid inlet of the water pump (5) is fixedly connected to the liquid storage chamber (7). An injection mechanism driven by a screw drive module a (8) and a screw drive module are fixedly installed on the upper part of the inner frame (2). Block b (9), one end of the outlet of the water pump (5) is fixedly connected to the injection mechanism, the peripheral side of the screw drive module b (9) is connected to the moving frame (10), the inner wall of the moving frame (10) is fixedly installed with a vertically arranged screw adjustment module (11), the peripheral side of the screw adjustment module (11) is connected to two symmetrically arranged and adjustable pressure beams (12), the surfaces of the two pressure beams (12) are each equipped with a set of electrical measuring modules and a squeezing module, and the bottom of the inner frame (2) is equipped with a clamping machine. The clamping mechanism has a diaper (13) to be inspected clamped on its inner wall. The electrical testing module includes a pressure distribution tube (32), an electrical testing frame (33), and a set of vertically arranged sleeves (34). The inner wall of the electrical testing frame (33) is slidably connected to the pressure beam (12). The back of the electrical testing frame (33) is threaded with a locking knob that cooperates with the pressure beam (12). The tail end of the pressure distribution tube (32) is fixedly connected to the air distribution tube (6). The connection between the pressure distribution tube (32) and the air distribution tube (6) is provided with an electromagnetic air valve and an air pressure probe, respectively. Each sleeve (34) is fixedly connected to the electrical testing frame (33) on its peripheral side. A piston seat is slidably connected to the inner wall of the sleeve (34). An air-push chamber is fixedly provided between the top surface of the piston seat and the opposite surface of the sleeve (34). The top surface of the air-push chamber is fixedly connected to the pressure distribution pipe (32). A pressure rod (35) is fixedly installed on the bottom surface of the piston seat. A vertically arranged temperature and humidity probe (36) is fixedly installed at the bottom end of the pressure rod (35). A clamping spring (37) is sleeved on the peripheral side of the pressure rod (35).

2. The diaper production quality inspection equipment according to claim 1, characterized in that, The clamping mechanism includes a fixed clamp (14), a motor (15), a vertically arranged transmission screw (16), and a set of guide grooves arranged in a circular array and opened inside the inner frame (2). The tail end of the transmission screw (16) is rotatably connected to the inner frame (2), and the output shaft end of the motor (15) is fixedly connected to the transmission screw (16). A clamping ring (17) is drivenly connected to the circumferential side of the transmission screw (16). A horizontally arranged guide post (18) is fixedly installed on the inner wall of the guide groove. An active clamping seat (19) and a driven clamping seat (20) are slidably connected to the circumferential side of the guide post (18). The circumferential side of both the active clamping seat (19) and the driven clamping seat (20) are slidably connected to the guide groove. The active clamping seat (19) and the clamping ring (17) are connected to each other. A connecting rod (21) is hinged between the opposing surfaces of the guide post (18). A compensating spring (22) is sleeved on the circumferential side of the guide post (18) at the position between the active clamp (19) and the driven clamp (20). A horizontally arranged force measuring frame (23) is fixedly installed on the back of the fixed clamp (14). The circumferential side of the force measuring frame (23) is slidably connected to the fixed clamp (14). A pressure sensor (24) is fixedly installed on the side of the force measuring frame (23) opposite to the driven clamp (20). A movable clamp (25) is slidably connected to the inner wall of the fixed clamp (14). A pressure adjusting screw (26) is threadedly connected to the inner wall of the fixed clamp (14). The bottom end of the pressure adjusting screw (26) is rotatably connected to the movable clamp (25). The fixed clamp (14) has a "U" shaped structure.

3. The quality inspection equipment for diaper production according to claim 2, characterized in that, The fixed clamp (14) has a "U" shaped structure, and the movable clamp (25) has a flat plate structure. The movable clamp (25) is located inside the fixed clamp (14).

4. The quality inspection equipment for diaper production according to claim 1, characterized in that, The injection mechanism includes an injection seat (27), the inner wall of which is connected to the screw drive module a (8) for transmission, the peripheral side of which is slidably connected to the inner frame (2), a vertically arranged injection pipe (28) is fixedly installed on the inner wall of the injection seat (27), a flexible tube (29) is fixedly connected to the peripheral side of the injection pipe (28), one end of the inlet of the flexible tube (29) is fixedly connected to the water pump (5), a solenoid valve and a flow meter are fixedly installed in the interior of the flexible tube (29) from front to back, a heating chamber is fixedly opened inside the injection pipe (28), an electric heating rod (30) is fixedly installed on the inner wall of the heating chamber, a temperature probe (31) is fixedly installed on the peripheral side of the injection pipe (28), and the monitoring end of the temperature probe (31) extends into the interior of the heating chamber.

5. The quality inspection equipment for diaper production according to claim 1, characterized in that, The lead screw adjustment module (11) includes an adjustment lead screw and an adjustment motor. Both ends of the adjustment lead screw are rotatably connected to the detection pole frame. The top surface of the adjustment motor is fixedly connected to the moving frame (10). The output shaft end of the adjustment motor is driven by the adjustment lead screw. The circumferential side of the adjustment lead screw is symmetrically provided with a forward thread and a reverse thread. The circumferential side of the forward thread and the reverse thread are respectively driven by two pressure beams (12).

6. The quality inspection equipment for diaper production according to claim 1, characterized in that, The extrusion module includes a support plate and a dehydration frame (41) fixedly connected to the pressure beam (12). A set of vertically arranged extrusion push rods (38) are installed between the opposite surfaces of the support plate and the dehydration frame (41). A pressure sensor is fixedly installed at the connection between the extrusion push rods (38) and the dehydration frame (41).

7. The diaper production quality inspection equipment according to claim 6, characterized in that, The end face of the quality inspection box (1) is fixedly provided with a 45° inclined surface. The inner wall of the 45° inclined surface is hinged with a box door (39). The box door (39) is made of transparent material. The top of the quality inspection box (1) is fixedly installed with a central control panel (40). The back of the quality inspection box (1) is fixedly installed with a water supply pipe and a waste discharge pipe that communicate with the liquid storage chamber (7).

8. The quality inspection equipment for diaper production according to claim 1, characterized in that, Both the lead screw drive module a (8) and the lead screw drive module b (9) include a drive motor and a horizontally arranged guide screw. Both ends of the guide screw are rotatably connected to the inner frame (2). One surface of the drive motor is fixedly connected to the inner frame (2). The output shaft end of the drive motor is fixedly connected to the guide screw. The inner walls of the moving frame (10) and the liquid injection seat (27) are both connected to the guide screw at adjacent positions.

9. A quality inspection method for a diaper production quality inspection equipment according to any one of claims 1-8, characterized in that, Includes the following steps: SS001, Elasticity Test: When performing elasticity testing, open the door (39), and use the fixed clamp (14) and moving clamp (25) to clamp and arrange the diaper (13) to be tested inside the quality inspection box (1). After the diaper (13) to be tested is clamped, the air conditioner body (3) is set to maintain the internal temperature and humidity of the quality inspection box (1). During elasticity testing, the two pressure beams (12) are moved away from the diaper (13) to be tested by controlling the screw adjustment module (11). 3) During the test, the pressure sensor (24) is automatically zeroed first. After the zeroing is completed, the motor (15) outputs the rotation speed slowly and moves the active clamp (19) slowly towards the driven clamp (20). During the movement of the active clamp (19), the diaper (13) under test is gradually subjected to tension. The pressure sensor (24) generates monitoring data. When any pressure sensor (24) generates a sudden value, the maximum peak value of the pressure sensor (24) is recorded, and then the elasticity threshold data of the diaper (13) under test is measured. SS002, Absorbency Test: After step SS001, a newly installed diaper (13) to be tested is re-clamped inside the quality inspection box (1). After the diaper (13) to be tested is clamped, four clamping clamps (14) are used to tighten and limit the diaper (13) to be tested at a set tension. Before the test, the central control panel (40) is set to set the single injection volume, injection rate, injection pressure, injection temperature and injection position of the injection tube (28). After the central control panel (40) is set, the two pressure beams (12) are brought closer to each other, and the monitoring end of the temperature and humidity probe (36) is kept close to the surface of the diaper (13) to be tested. After the diaper is attached and tightly attached, the temperature and humidity probe (36) is automatically zeroed. After zeroing, the injection tube (28) adds test water in a preset state. After the test water is added, the central control panel (40) periodically collects the monitoring data of each temperature and humidity probe (36) and then detects the temperature change trend, humidity change trend and maximum absorbable liquid volume of the diaper under test (13). After the test of a single diaper under test (13) is completed, a new diaper under test (13) is replaced to detect the performance change trend of the diaper under test (13) under different injection rates, different injection pressures, different injection temperatures and different injection positions. SS003, Water Retention Performance Test: After step SS002, a new diaper (13) to be tested is re-clamped inside the quality inspection box (1). After the diaper (13) to be tested is clamped, four clamps (14) tighten the diaper (13) to be tested with a set tension. Before the test, a preset amount of liquid is injected into the diaper (13) to be tested through the injection tube (28) to keep the diaper (13) to be tested in a set amount of absorbent state. After the diaper (13) to be tested is kept in absorbent state, the two squeezing modules squeeze synchronously from top to bottom and apply pressure step by step. When the diaper (13) to be tested dehydrates, the feedback value of the pressure sensor at the squeezing push rod (38) is recorded to help calculate the water retention performance of the diaper (13).

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