A performance testing device for plastic product production

Abstract

The present invention discloses a performance testing device for plastic product production, which belongs to the technical field of plastic product production. A performance testing device for plastic product production includes a main testing box, a first auxiliary testing box, and a second auxiliary testing box; the first auxiliary testing box and the second auxiliary testing box are fixedly installed on the left and right sides of the main testing box respectively; a first lifting device, a second lifting device, a plug assembly, and a sealing and inflating device are provided in the main testing box; the first lifting device is used for melting, moisture content, and thermal stability testing of plastic products; the second lifting device is used to assist the first lifting device in working; the sealing and inflating device is used to assist the first lifting device in moisture content testing and thermal stability testing; such an arrangement prevents external environmental factors from affecting the test results during the test process, and the various components are used in conjunction to detect different performances, thereby improving the efficiency of the test.

Description

Technical Field

[0001] The present invention belongs to the technical field of plastic product production, and more specifically, relates to a performance detection device for plastic product production. Background Art

[0002] Plastic products are widely used in our daily lives. Performance testing is a key step in the production of plastic products to ensure they meet quality requirements and satisfy specific application needs. The performance of plastic products includes moisture content, fluidity, thermal stability, and more.

[0003] Existing performance testing devices for plastic products generally require the plastic product to be melted using dedicated equipment, then removed from the melting equipment before undergoing other testing. During this process, external environmental factors, etc., will directly affect the body of the melted plastic product, affecting the test results. In addition, due to the high-temperature melting process, operators are prone to burns when removing the melted plastic product. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a performance detection device for plastic product production, which can realize the linkage detection of multiple performances.

[0005] The present invention provides a performance testing device for plastic product production, comprising a main testing box, a first auxiliary testing box and a second auxiliary testing box, wherein the first auxiliary testing box and the second auxiliary testing box are fixedly mounted on the left and right sides of the main testing box, respectively. The device is characterized in that a first lifting device, a second lifting device, a rubber plug assembly and a sealing and inflating device are provided in the main testing box.

[0006] The first lifting device is used for melting, moisture content detection and thermal stability detection of plastic products.

[0007] The second lifting device is used to assist the first lifting device in working.

[0008] The sealing and inflating device is used to assist in the detection of the moisture content and thermal stability of the first lifting device.

[0009] As a further improvement of the present invention, the first lifting device includes a first base, a first telescopic rod and a heating table; the bottom of the first telescopic rod passes through the upper surface of the first base and is fixedly arranged; a first motor and a first driving component are arranged inside the first base; the output end of the first motor is fixedly connected to one end of the first driving component; the other end of the first driving component is installed and connected to the first telescopic rod; the first motor drives the first telescopic rod to reciprocate in the vertical direction; the upper end of the first telescopic rod is fixedly connected to the bottom of the heating table; the first telescopic rod drives the heating table to reciprocate in the vertical direction.

[0010] As a further improvement of the present invention, a heating bottle is also provided in the main testing box; a heating groove is provided in the middle of the heating table; the heating groove matches the lower end of the heating bottle; a heating plate is fixedly installed at the bottom of the heating groove; and the heating plate matches the bottom of the heating bottle.

[0011] As a further improvement of the present invention, the second lifting device includes a second base, a second telescopic rod and a fixed seat; a second motor and a second driving component are provided inside the second base; the output end of the second motor is fixedly connected to one end of the second driving component; the other end of the second driving component is installed and connected to the second telescopic rod; the second motor drives the second telescopic rod to reciprocate in the vertical direction.

[0012] The bottom of the second telescopic rod passes through the upper surface of the second base and is fixedly arranged; the upper end of the second telescopic rod is fixedly connected to the bottom of the fixing seat; the second telescopic rod drives the fixing seat to reciprocate in the vertical direction.

[0013] As a further improvement of the present invention, the second lifting device is also provided with a fixed rod and a clamping device; the lower end of the fixed rod is installed and connected to the top of the second base; a third motor and a third driving component are provided inside the fixed seat; the output end of the third motor is fixedly connected to one end of the third driving component; the other end of the third driving component is installed and connected to the fixed rod; the third motor drives the fixed rod to rotate; the clamping device includes a clamping claw assembly, a clamping arm, a fixed sleeve and a fourth motor; the fixed sleeve is arranged on the fixed rod and fixedly installed; the fourth motor is fixedly installed on the left side of the fixed sleeve; the clamping arm sequentially passes through the fixed sleeve and the fixed rod and is fixedly connected to the output end of the fourth motor; the other end of the clamping arm away from the fixed rod is fixedly connected to the clamping claw assembly; the clamping claw assembly includes a clamping claw; the clamping claw is fixedly installed at the end of the clamping claw assembly away from the clamping claw arm; the clamping claw is used to clamp the heating bottle.

[0014] As a further improvement of the present invention, the second lifting device is also provided with a sliding device; the sliding device includes a first cylinder, a first slider and a first slide rail; the bottom of the first slide rail is fixedly installed on the bottom of the main measuring box; the lower end of the first slider is slidably connected to the upper end of the first slide rail; the bottom of the first slider is fixedly connected to the bottom of the second base; the output end of the first cylinder passes through the left side wall of the second base and is fixedly connected; the bottom of the first cylinder is fixedly installed on the left side wall of the main measuring box; the first cylinder drives the second base to reciprocate in the horizontal direction along the first slide rail.

[0015] As a further improvement of the present invention, a vacuum pump and an oxygen tank are provided on the outside of the main measuring box; the sealing and inflation device includes an exhaust pipe, an inflation pipe, and a sealing plug; the exhaust pipe is arranged through the sealing plug, and the end of the exhaust pipe away from the sealing plug is arranged through the top of the main measuring box and is installed and connected to the vacuum pump; the inflation pipe is arranged through the sealing plug, and the end of the inflation pipe away from the sealing plug is arranged through the top of the main measuring box and is installed and connected to the oxygen tank; a fixing column is also fixedly provided at the bottom of the sealing plug; the end of the fixing column away from the sealing plug is fixedly installed with the top of the main measuring box; a steam pipe is also arranged through the top of the sealing plug; the end of the steam pipe away from the sealing plug is arranged through the right side wall of the main measuring box and extends to the inside of the first auxiliary measuring box; a condenser is also fixedly provided on the periphery of the steam pipe inside the first auxiliary measuring box.

[0016] As a further improvement of the present invention, a first weighing platform is fixedly provided at the bottom inside the first auxiliary measuring box; a collecting cup is detachably provided at the upper end of the first weighing platform; the opening of the collecting cup is directly below the port of the steam pipe; a second weighing platform is fixedly provided at the bottom inside the second auxiliary measuring box; a measuring cup is detachably provided at the upper end of the second weighing platform; a drainage tube is also provided in the second auxiliary measuring box; the drainage tube includes a syringe and a fixed tube; the fixed tube is sleeved on the outer periphery of the syringe; one end of the fixed tube passes through the side wall between the second auxiliary measuring box and the main measuring box and is fixed; a needle is fixedly provided at one end of the syringe away from the side wall between the second auxiliary measuring box and the main measuring box; the melted plastic product flows out from the needle.

[0017] As a further improvement of the present invention, a plug assembly is also fixedly arranged in the main measuring box; the plug assembly includes a second sliding block, a second sliding rail, a second cylinder, a third telescopic rod, a support rod, a power seat and a support seat; the bottom of the second slide rail is fixedly installed at the bottom of the main measuring box; the second sliding block is slidably fixed to the upper end of the second slide rail; the top of the second sliding block is fixedly connected to the bottom of the support seat; the bottom of the support rod is fixedly connected to the top of the support seat; the top of the support rod is fixedly connected to the bottom of the power seat; the output end of the second cylinder is fixedly connected to the side of the support seat; the base of the second cylinder is fixedly installed on the rear side wall of the main measuring box; the second cylinder drives the support rod to reciprocate in the horizontal direction; a sixth motor is provided inside the power seat; the output end of the sixth motor is fixedly connected to the third telescopic rod; the sixth motor drives the third telescopic rod to perform telescopic reciprocating motion; a plug is installed at the other end of the third telescopic rod away from the power seat; the plug matches the inner diameter of the end of the syringe away from the needle.

[0018] As a further improvement of the present invention, the working steps of the performance testing device for plastic product production are as follows:

[0019] S1: Take a certain amount of plastic products to be tested and put them into the heating bottle. The heating platform rises and the heating bottle and the sealing plug are installed and connected. Turn on the heating plate to start the melting operation. Open the sealing plate in the fixed plate. Water vapor overflows from the steam pipe and condenses into water through the condenser. The water is collected in the collection cup. After the weight of the water is measured on the first weighing platform, the water content of the plastic products is calculated.

[0020] S2: The clamp works to fix the bottleneck of the heating bottle, and the first lifting device and the second lifting device run downward synchronously at the same speed, so that the heating bottle and the sealing plug are separated, and the rotating claw arm aligns the bottle mouth of the heating bottle with the tube mouth of the drainage tube, and pours part of the completely melted plastic product into it at a uniform speed; the melted plastic product flows into the measuring cup through the drainage tube; the stopper assembly works to assemble the stopper into the syringe, and the high-pressure air pump works to apply pressure to the melted plastic product in the syringe; the flow time and the mass of the discharged plastic product are recorded.

[0021] S3: Raise the heating bottle again and connect it to the sealing plug; turn on the vacuum pump to remove the gas in the heating bottle through the vacuum tube; after vacuuming, open the oxygen valve to flush oxygen into the heating bottle while turning on the heating plate; observe the changes in physical properties and surface color of the molten plastic product retained in the heating bottle, and evaluate the thermal stability of the plastic product under oxidizing conditions.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the scheme of the present invention is provided with a main testing box, a first auxiliary testing box and a second auxiliary testing box; the first auxiliary testing box and the second auxiliary testing box are fixedly installed on the left and right sides of the main testing box respectively; a first lifting device, a second lifting device, a plug assembly and a sealing and inflation device are provided in the main testing box; the first lifting device is used for melting, moisture content detection and thermal stability detection of plastic products; the second lifting device is used to assist the first lifting device in working; the sealing and inflation device is used to assist the first lifting device in moisture content detection and thermal stability detection; such an arrangement avoids the influence of external environmental factors on the test results during the test process, and the various components are used in conjunction to detect different performances, thereby improving the efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural diagrams of the performance detection device of the present invention;

[0024] Figure 2 It is a partial structural diagram of the first lifting device of the present invention;

[0025] Figure 3 This is the second structural diagram of the performance detection device of the present invention.

[0026] Description of the numbers in the figure:

[0027] 1. Main test box; 101. Exhaust pipe; 102. Inflatable pipe; 103. Sealing plug; 104. Fixing plate; 105. Heating bottle; 106. First base; 107. First telescopic rod; 108. Heating table; 109. Gripping jaws; 110. Heating plate; 111. Second base; 112. Second telescopic rod; 113. Fixing seat; 114. Fixing rod; 115. Claw arm; 116. Fixing sleeve; 117. Fourth motor; 118 , heating tank; 119, first slider; 120, first slide rail; 121, first cylinder; 122, second slider; 123, second slide rail; 124, second cylinder; 125, third telescopic rod; 126, rubber plug; 127, support rod; 128, power seat; 129, support seat; 130, fixed column; 2, first auxiliary measuring box; 201, condenser; 202, collecting cup; 203, first weighing platform; 3, second auxiliary measuring box. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0029] Specific embodiment 1: Please refer to Figure 1-3 A performance testing device for plastic product production includes a main testing box 1, a first auxiliary testing box 2, a second auxiliary testing box 3 and a control device; the first auxiliary testing box 2 is fixedly connected to the right side wall of the main testing box 1; the second auxiliary testing box 3 is fixedly connected to the left side wall of the main testing box 1; the main testing box 1, the first auxiliary testing box 2, and the second auxiliary testing box 3 are respectively electrically connected to the control device for control.

[0030] Preferably, the main testing box 1 is a sealed box.

[0031] A first lifting device, a second lifting device and a sealing and inflating device are provided in the main measuring box 1; the first lifting device is fixedly installed on the right side of the bottom of the main measuring box 1; the second lifting device is fixedly installed on the left side of the bottom of the main measuring box 1; the upper end of the sealing and inflating device passes through the top of the main measuring box 1 and is fixedly connected and is conductive to the outside.

[0032] The first lifting device includes a first base 106, a first telescopic rod 107 and a heating platform 108; a first motor and a first driving component are provided inside the first base 106; the output end of the first motor is fixedly connected to one end of the first driving component; the other end of the first driving component is installed and connected to the first telescopic rod 107; the first motor drives the first telescopic rod 107 to reciprocate in the vertical direction.

[0033] The bottom of the first telescopic rod 107 passes through the upper surface of the first base 106 and is fixed thereto; the upper end of the first telescopic rod 107 is fixedly connected to the bottom of the heating platform 108; the first telescopic rod 107 drives the heating platform 108 to reciprocate in the vertical direction.

[0034] A heating bottle 105 is also provided in the main testing box 1; a heating groove 118 is provided in the middle of the heating table 108; the heating groove 118 matches the lower end of the heating bottle 105; a heating plate 110 is fixedly installed at the bottom of the heating groove 118; the heating plate 110 matches the bottom of the heating bottle 105.

[0035] The second lifting device includes a second base 111, a second telescopic rod 112 and a fixed base 113; a second motor and a second driving component are provided inside the second base 111; the output end of the second motor is fixedly connected to one end of the second driving component; the other end of the second driving component is installed and connected to the second telescopic rod 112; the second motor drives the second telescopic rod 112 to reciprocate in the vertical direction.

[0036] The bottom of the second telescopic rod 112 passes through the upper surface of the second base 111 and is fixed thereto. The upper end of the second telescopic rod 112 is fixedly connected to the bottom of the fixing seat 113 . The second telescopic rod 112 drives the fixing seat 113 to reciprocate in the vertical direction.

[0037] The second lifting device is also provided with a fixing rod 114; the lower end of the fixing rod 114 is installed and connected to the top of the second base 111; a third motor and a third driving component are provided inside the fixing seat 113; the output end of the third motor is fixedly connected to one end of the third driving component; the other end of the third driving component is installed and connected to the fixing rod 114; the third motor drives the fixing rod 114 to rotate.

[0038] The second lifting device is also provided with a sliding device; the sliding device includes a first cylinder 121, a first slider 119 and a first slide rail 120; the bottom of the first slide rail 120 is fixedly installed on the bottom of the main measuring box 1; the lower end of the first slider 119 is slidably connected to the upper end of the first slide rail 120; the bottom of the first slider 119 is fixedly connected to the bottom of the second base 111; the output end of the first cylinder 121 passes through the left side wall of the second base 111 and is fixedly connected; the bottom of the first cylinder 121 is fixedly installed on the left side wall of the main measuring box 1; the first cylinder 121 drives the second base 111 to reciprocate in the horizontal direction along the first slide rail 120.

[0039] The second lifting device is also provided with a clamping device; the clamping device includes a clamping claw assembly, a clamping arm 115, a fixing sleeve 116 and a fourth motor 117; the fixing sleeve 116 is sleeved on the fixing rod 114 and fixedly installed; the fourth motor 117 is fixedly installed on the left side of the fixing sleeve 116; the clamping arm 115 sequentially passes through the fixing sleeve 116 and the fixing rod 114 and is fixedly connected to the output end of the fourth motor 117; the other end of the clamping arm 115 away from the fixing rod 114 is fixedly connected to the clamping claw assembly; the clamping claw assembly includes a clamping claw 109; the clamping claw 109 is fixedly installed at the end of the clamping claw assembly away from the clamping claw arm 115; the clamping claw 109 is used to clamp the heating bottle 105.

[0040] A vacuum pump and an oxygen tank are provided on the outside of the main measuring box 1; the sealing and inflating device includes an exhaust pipe 101, an inflation pipe 102, a sealing plug 103 and a fixing plate 104; the exhaust pipe 101 is arranged through the sealing plug 103, and the end of the exhaust pipe 101 away from the sealing plug 103 is arranged through the top of the main measuring box 1 and is installed and connected to the vacuum pump; the inflation pipe 102 is arranged through the sealing plug 103, and the end of the inflation pipe 102 away from the sealing plug 103 is arranged through the top of the main measuring box 1 and is installed and connected to the oxygen tank; a fixing column 130 is also fixedly provided at the bottom of the sealing plug 103; the end of the fixing column 130 away from the sealing plug 103 is fixedly installed with the top of the main measuring box 1; a steam pipe is also provided through the top of the sealing plug 103; the end of the steam pipe away from the sealing plug 103 is passed through the right side wall of the main measuring box 1 and extends to the inside of the first auxiliary measuring box 2; a condenser pipe 201 is also fixedly provided on the periphery of the steam pipe inside the first auxiliary measuring box 2.

[0041] like Figure 1 As shown, the fixed plate 104 is fixedly installed on the right side of the sealing plug 103, and the end of the fixed plate 104 away from the sealing plug 103 is installed and connected through the right side wall of the main testing box 1; the sealing plate and the fifth motor are installed inside the fixed plate 104; the interior of the fixed plate 104 is connected with the sealing plug 103; the output end of the fifth motor is fixedly installed with the sealing plate; the fifth motor drives the sealing plate to reciprocate in the horizontal direction between the fixed plate and the sealing plug 103; the sealing plate is used to seal and block the steam pipe when it is not in use.

[0042] A plug assembly is also fixedly arranged in the main measuring box 1; the plug assembly includes a second slider 122, a second slide rail 123, a second cylinder 124, a third telescopic rod 125, a support rod 127, a power seat 128 and a support seat 129; the bottom of the second slide rail 123 is fixedly installed at the bottom of the main measuring box 1; the second slider 122 is slidably fixed to the upper end of the second slide rail 123; the top of the second slider 122 is fixedly connected to the bottom of the support seat 129; the bottom of the support rod 127 is fixedly connected to the top of the support seat 129; the top of the support rod 127 is fixedly connected to the bottom of the power seat 128; the output end of the second cylinder 124 is fixedly connected to the side of the support seat 129; the base of the second cylinder 124 is fixedly installed on the rear side wall of the main measuring box 1; the second cylinder 124 drives the support rod 127 to reciprocate in the horizontal direction.

[0043] A sixth motor is provided inside the power base 128; the output end of the sixth motor is fixedly connected to the third telescopic rod 125; the sixth motor drives the third telescopic rod 125 to perform telescopic reciprocating motion; a rubber plug 126 is installed on the other end of the third telescopic rod 125 away from the power base 128.

[0044] A first weighing platform 203 is fixedly provided at the bottom of the first auxiliary measuring box 2 ; a collecting cup 202 is detachably provided at the upper end of the first weighing platform 203 ; the opening of the collecting cup 202 is located directly below the port of the steam pipe.

[0045] A second weighing platform 303 is fixedly provided at the bottom of the second auxiliary measuring box 3; a measuring cup 302 is detachably provided at the upper end of the second weighing platform 303; a drainage tube 301 is also provided in the second auxiliary measuring box 3; the drainage tube includes a syringe and a fixed tube; the fixed tube is sleeved on the outer circumference of the syringe; one end of the fixed tube passes through the side wall between the second auxiliary measuring box 3 and the main measuring box 1 and is fixed; a needle is fixedly provided at one end of the syringe away from the side wall between the second auxiliary measuring box 3 and the main measuring box 1; the molten plastic product flows out from the needle.

[0046] Optionally, a heating insulation layer is provided inside the fixed tube.

[0047] A high-pressure air pump is also provided outside the main testing box 1; the rubber plug 126 matches the inner diameter of the end of the syringe away from the needle; an air pipe is provided through the rubber plug 126; the air pipe is installed and connected to the high-pressure air pump and is conducted.

[0048] Working steps and principles:

[0049] S1: Take a certain amount of plastic products to be tested and place them in the heating bottle 105. After the heating platform 108 rises, the heating bottle 105 and the sealing plug 103 are installed and connected; turn on the heating plate to start the melting operation, open the sealing plate in the fixed plate 104, and water vapor overflows from the steam pipe and condenses into water through the condenser. The water is collected in the cup 202. After the first weighing platform 203 weighs the weight of the water, the water content of the plastic products is calculated.

[0050] S2: The clamping claw 109 works to fix the bottleneck of the heating bottle 105, and the first lifting device and the second lifting device run downward synchronously at the same speed, so that the heating bottle 105 and the sealing plug 103 are separated, and the rotating claw arm 115 aligns the bottle mouth of the heating bottle 105 with the tube mouth of the drainage tube, and pours the partially completely melted plastic product into it at a uniform speed; after the melted plastic product flows into the measuring cup through the drainage tube, the plug assembly works to assemble the plug into the syringe, and the high-pressure air pump works to apply pressure to the melted plastic product in the syringe; the flow time and the mass of the plastic product flowing out are recorded.

[0051] S3: Raise the heating bottle 105 again and install and connect it to the sealing plug 103; turn on the vacuum pump to remove the gas in the heating bottle 105 through the vacuum pipe 101; after completing the vacuuming, open the oxygen valve to flush oxygen into the heating bottle 105 and turn on the heating plate; observe the changes in physical properties and surface color of the melted plastic product retained in the heating bottle 105, and evaluate the thermal stability of the plastic product under oxidizing conditions.

[0052] S21: Flow time measurement: Record the time required for the plastic sample to flow out of the drainage tube.

[0053] Outflow mass measurement: The plastic sample flowing out of the drainage tube is collected and the outflow mass is determined by the second weighing platform 303 .

[0054] Calculate the melt flow rate index: Calculate the melt flow rate index based on the outflow quality and outflow time.

[0055] S31: Evaluate the thermal stability of plastic products under oxidative conditions by observing changes in the physical properties and surface color of the samples.

[0056] The above is only a preferred specific implementation method of the present application; however, the protection scope of the present application is not limited thereto; any technician familiar with the technical field within the technical scope disclosed in the present application, who makes equivalent replacements or changes based on the technical solution and improved ideas of the present application, shall be covered within the protection scope of the present application.

Claims

1. A performance testing device for plastic product production, comprising a main testing box (1), a first auxiliary testing box (2) and a second auxiliary testing box (3), wherein the first auxiliary testing box (2) and the second auxiliary testing box (3) are fixedly mounted on the left and right sides of the main testing box (1), respectively, and characterized in that: A first lifting device, a second lifting device, a heating bottle (105), a rubber plug assembly and a sealing and inflating device are provided in the main test box (1); The first lifting device is used for melting, moisture content and thermal stability testing of plastic products; The second lifting device is used to assist the first lifting device in working; The sealing and inflating device is used to assist in the detection of moisture content and thermal stability of the first lifting device; The first lifting device includes a heating platform (108); the second lifting device is provided with a clamping device; a heating plate (110) is installed on the heating platform (108); The sealing and inflating device comprises an exhaust pipe (101), an inflation pipe (102), a sealing plug (103) and a fixing plate (104); the fixing plate (104) is fixedly installed on the right side of the sealing plug (103); the end of the fixing plate (104) away from the sealing plug (103) passes through the right side wall of the main measuring box (1) and is installed and connected to the main measuring box (1); a sealing plate is installed inside the fixing plate (104); the exhaust pipe (101) passes through the sealing plug (103) and the exhaust pipe (101) is away from the sealing plug. One end of the sealing plug (103) passes through the top of the main measuring box (1) and is connected to the external vacuum pump; the inflation tube (102) passes through the sealing plug (103), and the end of the inflation tube (102) away from the sealing plug (103) passes through the top of the main measuring box (1) and is connected to the external oxygen tank; a fixing column (130) is fixedly provided at the bottom of the sealing plug (103); the end of the fixing column (130) away from the sealing plug (103) is fixedly installed with the top of the main measuring box (1); A steam pipe is provided through the top of the sealing plug (103), and one end of the steam pipe away from the sealing plug (103) passes through the right side wall of the main measuring box (1) and extends into the interior of the first auxiliary measuring box (2); a condensing pipe (201) is also fixedly provided on the outer periphery of the steam pipe inside the first auxiliary measuring box (2); A first weighing platform (203) is fixedly provided at the bottom of the first auxiliary measuring box (2); a collecting cup (202) is detachably provided at the upper end of the first weighing platform (203); the opening of the collecting cup (202) is located directly below the port of the steam pipe; A second weighing platform (303) is fixedly provided at the bottom of the second auxiliary measuring box (3); a measuring cup (302) is detachably provided at the upper end of the second weighing platform (303); a drainage tube (301) is also provided in the second auxiliary measuring box (3); the drainage tube comprises a syringe and a fixed tube; the fixed tube is sleeved on the outer periphery of the syringe; one end of the fixed tube passes through the side wall between the second auxiliary measuring box (3) and the main measuring box (1) and is fixed; a needle is fixedly provided at one end of the syringe away from the side wall between the second auxiliary measuring box (3) and the main measuring box (1); the melted plastic product flows out from the needle; The working steps of the detection device are as follows: S1: Take a certain amount of the plastic product to be tested and put it into the heating bottle (105). The heating table (108) provided by the first lifting device rises, and the heating bottle (105) and the sealing plug (103) provided by the sealing and inflating device are installed and connected; the heating plate provided on the heating table (108) is turned on to start the melting operation, and the sealing plate in the fixed plate (104) is opened. Water vapor overflows from the steam pipe, condenses through the condenser to form water, and enters the collection cup (202). After the weight of the water is measured by the first weighing table (203), the water content of the plastic product is calculated; S2: The clamping claw (109) provided in the clamping device works to fix the bottleneck of the heating bottle (105), and the first lifting device and the second lifting device move downward synchronously at the same speed, so that the heating bottle (105) and the sealing plug (103) are separated, and the rotating claw arm (115) provided in the clamping device aligns the bottle mouth of the heating bottle (105) with the pipe mouth of the drainage tube (301), and pours the partially completely melted plastic product into it at a uniform speed; After the molten plastic product flows into the measuring cup through the drainage tube (301), the rubber plug assembly is operated to assemble the rubber plug into the syringe, and the high-pressure air pump is operated to apply pressure to the molten plastic product in the syringe; the flow time and the mass of the plastic product that flows out are recorded; S3: Raise the heating bottle (105) again and install and connect it to the sealing plug (103); start the vacuum pump and remove the gas in the heating bottle (105) through the exhaust pipe (101); after the vacuum is completed, open the oxygen valve to flush oxygen into the heating bottle (105) and turn on the heating plate (110); observe the changes in the physical properties of the molten plastic product retained in the heating bottle (105) and evaluate the thermal stability of the plastic product under oxidizing conditions.

2. A performance testing device for plastic product production according to claim 1, characterized in that: The first lifting device includes a first base (106) and a first telescopic rod (107); the bottom of the first telescopic rod (107) passes through the upper surface of the first base (106) and is fixedly arranged; a first motor and a first driving component are arranged inside the first base (106); the output end of the first motor is fixedly connected to one end of the first driving component; the other end of the first driving component is installed and connected to the first telescopic rod (107); the first motor drives the first telescopic rod (107) to reciprocate in the vertical direction; the upper end of the first telescopic rod (107) is fixedly connected to the bottom of the heating platform (108); the first telescopic rod (107) drives the heating platform (108) to reciprocate in the vertical direction.

3. A performance testing device for plastic product production according to claim 1, characterized in that: A heating groove (118) is provided in the middle of the heating platform (108); the heating groove (118) matches the lower end of the heating bottle (105); a heating plate (110) is fixedly installed at the bottom of the heating groove (118); the heating plate (110) matches the bottom of the heating bottle (105).

4. A performance testing device for plastic product production according to claim 1, characterized in that: The second lifting device comprises a second base (111), a second telescopic rod (112) and a fixed base (113); a second motor and a second driving component are provided inside the second base (111); an output end of the second motor is fixedly connected to one end of the second driving component; the other end of the second driving component is installed and connected to the second telescopic rod (112); the second motor drives the second telescopic rod (112) to reciprocate in the vertical direction; The bottom of the second telescopic rod (112) passes through the upper surface of the second base (111) and is fixedly arranged; the upper end of the second telescopic rod (112) is fixedly connected to the bottom of the fixed seat (113); the second telescopic rod (112) drives the fixed seat (113) to reciprocate in the vertical direction.

5. A performance testing device for plastic product production according to claim 4, characterized in that: The second lifting device is also provided with a fixed rod (114); the lower end of the fixed rod (114) is connected to the top of the second base (111); a third motor and a third driving component are provided inside the fixed seat (113); the output end of the third motor is fixedly connected to one end of the third driving component; the other end of the third driving component is connected to the fixed rod (114); the third motor drives the fixed rod (114) to rotate; the clamping device includes a clamping claw assembly, a claw arm (115), a fixed sleeve (116) and a fourth motor (117); the fixed sleeve (116) is provided It is arranged on the fixing rod (114) and fixedly installed; the fourth motor (117) is fixedly installed on the left side of the fixing sleeve (116); the claw arm (115) sequentially passes through the fixing sleeve (116) and the fixing rod (114) and is fixedly connected to the output end of the fourth motor (117); the other end of the claw arm (115) away from the fixing rod (114) is fixedly connected to the clamping claw assembly; the clamping claw assembly includes a clamping claw (109); the clamping claw (109) is fixedly installed at the end of the clamping claw assembly away from the claw arm (115); the clamping claw (109) is used to clamp the heating bottle (105).

6. A performance testing device for plastic product production according to claim 4, characterized in that: The second lifting device is also provided with a sliding device; the sliding device includes a first cylinder (121), a first slider (119) and a first slide rail (120); the bottom of the first slide rail (120) is fixedly installed on the bottom of the main measuring box (1); the lower end of the first slider (119) is slidably connected to the upper end of the first slide rail (120); the bottom of the first slider (119) is fixedly connected to the bottom of the second base (111); the output end of the first cylinder (121) passes through the left side wall of the second base (111) and is fixedly connected; the bottom of the first cylinder (121) is fixedly installed on the left side wall of the main measuring box (1); the first cylinder (121) drives the second base (111) to reciprocate in the horizontal direction along the first slide rail (120).

7. The performance testing device for plastic product production according to claim 1, characterized in that: The rubber plug assembly includes a second slider (122), a second slide rail (123), a second cylinder (124), a third telescopic rod (125), a support rod (127), a power seat (128) and a support seat (129); the bottom of the second slide rail (123) is fixedly mounted on the bottom of the main test box (1); the second slider (122) is slidably fixed to the upper end of the second slide rail (123); the top of the second slider (122) is fixedly connected to the bottom of the support seat (129); the bottom of the support rod (127) is fixedly connected to the top of the support seat (129); the top of the support rod (127) is fixedly connected to the bottom of the power seat (128); the The output end of the second air cylinder (124) is fixedly connected to the side of the support base (129); the base of the second air cylinder (124) is fixedly installed on the rear side wall of the main test box (1); the second air cylinder (124) drives the support rod (127) to reciprocate in the horizontal direction; a sixth motor is provided inside the power base (128); the output end of the sixth motor is fixedly connected to the third telescopic rod (125); the sixth motor drives the third telescopic rod (125) to reciprocate in telescopic motion; a rubber plug (126) is installed at the other end of the third telescopic rod (125) away from the power base (128); the rubber plug (126) matches the inner diameter of the end of the syringe away from the needle.

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