Durability detection equipment for degradable plastic products

Abstract

The invention relates to the technical field of plastic product detection, and discloses degradable plastic product durability detection equipment, which comprises a detection box body, the bottom of the detection box body is provided with a fixed seat, the top of the detection box body is provided with a first telescopic piece, and the first telescopic piece is connected with a movable seat. Two symmetrically-distributed fixing plates and two sets of symmetrically-arranged limiting rods are installed at the bottom of the detection box body, a lifting frame is arranged on the limiting rods in a sliding mode, two lifting blocks are installed on the lifting frame and are arranged in a staggered mode, two symmetrically-distributed fixing cylinders are arranged on the two sides of each lifting block, and the two fixing cylinders are arranged on the two sides of each lifting block in a staggered mode. The fixed cylinder is slidably connected with a movable rod, the movable rod is fixedly connected with a displacement frame, a second telescopic piece is installed in the displacement frame, and the second telescopic piece is connected with a sliding frame slidably connected with the displacement frame; according to the invention, tensile property detection can be carried out on the plastic product when bending deformation or wear occurs, so that the tensile property detection data of the plastic product is more comprehensive.

Description

Technical Field

[0001] The invention relates to the technical field of plastic product detection, in particular to a durability detection device for degradable plastic products. Background Art

[0002] Tensile testing is a commonly used method to test the material properties of plastic products. It can be used to determine the tensile strength, yield point, elastic modulus and other performance indicators of the material. When measuring the durability of plastic products, we often use tensile force and elongation at break as measurement indicators. Through tensile testing, the quality and force bearing capacity of the material can be judged, and then the durability of the plastic product can be evaluated.

[0003] In the prior art, when performing tensile testing on plastic products, two clamping mechanisms are often used to clamp and fix the two ends of the plastic products, and then the clamping mechanisms are driven to move by a driving member to test the tensile properties of the plastic products. However, the prior art only performs tensile testing on plastic products through linear stretching in a single direction, and cannot test the tensile properties of plastic products under specific conditions, such as testing the tensile properties of plastic products when they are bent or deformed or worn, which can easily lead to incomplete test data. Therefore, there is still room for improvement in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a durability testing device for degradable plastic products to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A durability testing device for degradable plastic products, comprising a testing box, a box door is arranged on the testing box, a fixed seat is installed at the bottom of the testing box, a first telescopic member is installed at the top of the testing box, the first telescopic member is connected to a movable seat, two symmetrically distributed fixed plates and two groups of symmetrically arranged limit rods are installed at the bottom of the testing box, a lifting frame is slidably arranged on the limit rod, two lifting blocks are installed on the lifting frame, and the two lifting blocks are staggered, two symmetrically distributed fixed cylinders are arranged on both sides of the lifting block, the fixed cylinders are slidably connected to the movable rod, the movable rod is fixedly connected to the displacement frame, a second telescopic member is installed in the displacement frame, the second telescopic member is connected to a sliding frame slidably connected to the displacement frame, the sliding frame is fixedly connected to the mounting frame, both ends of the mounting frame are rotatably provided with a rotating shaft, a rotating column is installed on the rotating shaft, an arc-shaped smooth plate and an arc-shaped polishing plate are installed on the outer wall of the rotating column, and the arc-shaped smooth plate and the arc-shaped polishing plate are annular as a whole. Also includes:

[0007] A clamping mechanism, which is arranged on the fixed seat and the movable seat and is used to clamp and fix the two ends of the plastic product;

[0008] A displacement mechanism, which is arranged in the lifting block and connected to the displacement frame, and is used to push the mounting frame to perform displacement movement;

[0009] An adjustment control mechanism, which is arranged on a fixed plate and is used to drive and lock the displacement mechanism;

[0010] A reciprocating mechanism, which is disposed in the detection box and connected to the lifting frame, and is used to drive the lifting frame to perform reciprocating lifting;

[0011] The limiting mechanism is arranged at both ends of the mounting frame and is used to limit the rotating shaft.

[0012] As a preferred technical solution of the present invention, the shifting mechanism includes a transmission shaft rotatably arranged in the lifting block, and two symmetrically arranged cranks are installed on the transmission shaft. The crank is rotatably connected to one end of the first connecting rod, and the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is connected to the shifting frame.

[0013] As a preferred technical solution of the present invention, the adjustment and control mechanism includes two groups of connecting plates installed on a fixed plate, each group of connecting plates is set to two, a third telescopic member is installed on the connecting plate, the third telescopic member is connected to an L-shaped plate, a rack is installed at one end of the L-shaped plate close to the middle of the fixed plate, a limiting groove is provided on the side of the L-shaped plate away from the rack, and gears cooperating with the rack and limit blocks cooperating with the limit groove are installed at both ends of the transmission shaft.

[0014] As a preferred technical solution of the present invention, the reciprocating mechanism includes a driving member installed at the bottom of the detection box, the output end of the driving member is fixedly connected to the turntable, a fixed column is installed at the eccentric part of the turntable, the fixed column is slidably connected to the swing rod, and two symmetrically distributed reciprocating rods connected to the lifting frame are installed on the swing rod.

[0015] As a preferred technical solution of the present invention, the limiting mechanism includes two symmetrically distributed limiting slots opened at the end of the rotating shaft, a limiting rod cooperating with the limiting slots is slidably arranged on the mounting frame, a pull plate is installed at the end of the limiting rod away from the rotating shaft, and an elastic member is arranged between the pull plate and the mounting frame.

[0016] As a preferred technical solution of the present invention, the clamping mechanism includes two symmetrically distributed side plates installed on a fixed seat and a movable seat, and a screw rod is threaded on the side plate, which is rotatably connected to a clamping plate, and two symmetrically distributed guide rods are installed on the clamping plate and are slidably connected to the side plates.

[0017] The present invention has the following advantages: when performing tensile testing on plastic products, the present invention can protect the testing area through the setting of the testing box and the box door, so as to avoid the surrounding staff being injured due to breakage during the tensile testing of plastic products, thereby improving the safety of the testing. When testing the tensile performance of plastic products in the event of bending and deformation, the two ends of the plastic product are clamped and fixed by the clamping mechanism on the fixed seat and the movable seat, and the movable seat is driven to rise and fall by the first telescopic member to perform tensile testing on the plastic product. In the process of tensile testing of the plastic product, the mounting frame is driven to move by the second telescopic member so that the arc-shaped smooth plate of the rotating column on the mounting frame contacts the plastic product, and then the lifting mechanism is driven to rise and fall reciprocally by the reciprocating mechanism. In the process of lifting and falling of the lifting mechanism, the adjusting control mechanism can drive the displacement mechanism to drive the mounting frame to move reciprocally, so that the arc-shaped smooth plate on the rotating column can continuously squeeze the plastic product, so that various positions of the plastic product continuously appear bending and deformation, thereby the tensile performance of the plastic product when bending and deformation occur can be tested. In addition, when it is necessary to test When the plastic product has tensile properties due to wear, the plastic product is first stretched initially through the clamping mechanism and in cooperation with the first telescopic member, and then the limit on the rotating shaft by the limiting mechanism is released, so that the rotating shaft rotates 180 degrees, so that the arc-shaped grinding plate on the rotating column rotates to the side away from the mounting frame, and the rotating shaft is limited again by the limiting mechanism, and at the same time the adjustment control mechanism is adjusted to a state where the displacement mechanism is locked. At this time, under the action of the reciprocating mechanism, the lifting frame will drive the arc-shaped grinding plate of the rotating column on the mounting frame to continuously reciprocate and grind the two sides of the plastic product when it is lifted and lowered, thereby simulating the wear of the plastic product. After that, the plastic product can be stretched and tested, so that the tensile properties of the plastic product when it is worn can be tested, and the tensile test of the plastic product can be made more comprehensive and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a durability testing device for degradable plastic products.

[0019] Figure 2 The present invention is a schematic diagram of the structure inside the testing box of a durability testing device for degradable plastic products.

[0020] Figure 3 The present invention is a schematic diagram of the structure of a durability testing device for degradable plastic products with part of the testing box removed.

[0021] Figure 4 The figure is a schematic diagram of the structure of a clamping mechanism in a durability testing device for degradable plastic products.

[0022] Figure 5The present invention is a structural schematic diagram of the connection between a lifting block and a mounting frame in a durability testing device for degradable plastic products.

[0023] Figure 6 The figure is a schematic diagram of the structure of a mounting frame in a durability testing device for degradable plastic products.

[0024] Figure 7 The figure is a schematic diagram of the structure of a limit mechanism in a durability testing device for degradable plastic products.

[0025] Figure 8 The figure is a schematic diagram of the structure of a displacement frame in a durability testing device for degradable plastic products.

[0026] Fig. 9 for Figure 8 Top view of the .

[0027] Fig.10 The present invention is a schematic diagram of the structure of the displacement mechanism in the lifting block of a durability testing device for biodegradable plastic products.

[0028] Fig.11 The present invention is a schematic diagram of the structure of an adjustment control mechanism in a durability testing device for degradable plastic products.

[0029] Fig.12 This is a schematic diagram of the structure of an L-shaped plate in a durability testing device for degradable plastic products.

[0030] Fig.13 The figure is a schematic diagram of the structure of gears and limit blocks in a durability testing device for degradable plastic products.

[0031] Fig.14 The figure is a schematic diagram of the structure of a reciprocating mechanism in a durability testing device for degradable plastic products.

[0032] In the figure: 1, detection box; 2, box door; 3, fixed seat; 4, first telescopic member; 5, movable seat; 6, clamping mechanism; 601, side plate; 602, screw rod; 603, clamping plate; 604, guide rod; 7, limit rod; 8, lifting frame; 9, fixed plate; 10, lifting block; 11, displacement mechanism; 1101, transmission shaft; 1102, crank; 1103, first connecting rod; 1104, second connecting rod; 12, adjustment control mechanism; 1201, connecting plate; 1202, third telescopic member; 1203, L-shaped plate; 1204, rack; 1205 , limit groove; 1206, gear; 1207, limit block; 13, reciprocating mechanism; 1301, driving member; 1302, turntable; 1303, fixed column; 1304, swing rod; 1305, reciprocating rod; 14, displacement frame; 15, fixed cylinder; 16, movable rod; 17, second telescopic member; 18, sliding frame; 19, mounting frame; 20, rotating shaft; 21, rotating column; 22, arc-shaped smooth plate; 23, arc-shaped grinding plate; 24, limit mechanism; 2401, limit clamping rod; 2402, pull plate; 2403, elastic member; 2404, limit clamping groove. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0034] See also Figure 1-14 A durability testing device for degradable plastic products includes a testing box 1, and a box door 2 is provided on the testing box 1. When performing a tensile test on plastic products, the testing area can be protected by the setting of the testing box 1 and the box door 2 to avoid injuries to surrounding workers due to breakage during the tensile test of plastic products, thereby improving the safety of the test. A fixed seat 3 is installed at the bottom of the testing box 1, and a first telescopic member 4 is installed at the top of the testing box 1. Preferably, the first telescopic member 4 is configured as a hydraulic rod, and the first telescopic member 4 is connected to a movable seat 5. Two symmetrically distributed fixed plates 9 and two groups of symmetrically arranged limit rods 7 are installed at the bottom of the testing box 1, and each group of limit rods 7 is configured as two. A lifting frame 8 is slidably provided on the limit rod 7, and two lifting blocks 10 are installed on the lifting frame 8, and the two lifting blocks 10 are staggered. Two symmetrically distributed fixed cylinders 15 are provided on both sides of the lifting block 10. The fixed cylinder 15 is slidably connected to the movable rod 16, and the movable rod 16 is fixedly connected to the displacement frame 14. A second telescopic member 17 is installed in the displacement frame 14. Preferably, the second telescopic member 17 is set as a hydraulic rod. The second telescopic member 17 is connected to a sliding frame 18 slidably connected to the displacement frame 14. The sliding frame 18 is fixedly connected to the mounting frame 19. Both ends of the mounting frame 19 are rotatably provided with a rotating shaft 20, and a rotating column 21 is installed on the rotating shaft 20. The outer wall of the rotating column 21 is installed with an arc-shaped smooth plate 22 and an arc-shaped polishing plate 23, and the arc-shaped smooth plate 22 and the arc-shaped polishing plate 23 are annular as a whole, and also include:

[0035] A clamping mechanism 6, which is arranged on the fixed seat 3 and the movable seat 5, and is used to clamp and fix the two ends of the plastic product;

[0036] The displacement mechanism 11 is disposed in the lifting block 10 and connected to the displacement frame 14, and is used to push the mounting frame 19 to perform displacement movement;

[0037] An adjusting control mechanism 12, wherein the adjusting control mechanism 12 is disposed on the fixing plate 9 and is used to drive and lock the displacement mechanism 11;

[0038] A reciprocating mechanism 13, which is disposed in the detection box 1 and connected to the lifting frame 8, and is used to drive the lifting frame 8 to perform reciprocating lifting;

[0039] The limiting mechanism 24 is arranged at both ends of the mounting frame 19 and is used to limit the rotating shaft 20 .

[0040] When detecting the tensile performance of a plastic product that is bent and deformed, the two ends of the plastic product are clamped and fixed by the clamping mechanisms 6 on the fixed seat 3 and the movable seat 5, and the movable seat 5 is driven to lift by the first telescopic member 4 to perform tensile testing on the plastic product. In the process of tensile testing of the plastic product, the mounting frame 19 is driven to move by the second telescopic member 17, so that the arc-shaped smooth plate 22 of the rotating column 21 on the mounting frame 19 contacts the plastic product, and then the lifting mechanism is driven to lift and reciprocate by the reciprocating mechanism 13. In the process of lifting and lowering the lifting mechanism, the adjustment control mechanism 12 can drive the displacement mechanism 11 to drive the mounting frame 19 to move reciprocally, so that the arc-shaped smooth plate 22 on the rotating column 21 can continuously squeeze the plastic product, so that various positions of the plastic product continuously appear bending deformation, thereby detecting the tensile performance of the plastic product when bending deformation occurs. In addition, when it is necessary to detect the tensile performance of the plastic product in the case of wear, first use the clamping mechanism 6 and cooperate with the first telescopic member 4 to move the mounting frame 19 to move the rotating column 21 on the mounting frame 19. The shrinking member 4 performs preliminary stretching on the plastic product, and then releases the limit of the rotating shaft 20 by the limiting mechanism 24, so that the rotating shaft 20 rotates 180 degrees, so that the arc-shaped grinding plate 23 on the rotating column 21 rotates to the side away from the mounting frame 19, and the rotating shaft 20 is limited by the limiting mechanism 24 again, and at the same time, the adjustment control mechanism 12 is adjusted to the state of locking the displacement mechanism 11, thereby limiting and locking the displacement frame 14, and then the mounting frame 19 is driven to move by the second telescopic member 17, so that the arc-shaped grinding plate 23 on the rotating column 21 contacts the plastic product. At this time, under the action of the reciprocating mechanism 13, the lifting frame 8 will drive the arc-shaped grinding plate 23 of the rotating column 21 on the mounting frame 19 to continuously reciprocate and grind the two sides of the plastic product when it is reciprocated and lifted, thereby simulating the wear of the plastic product, and then the plastic product can be subjected to tensile testing, so that the tensile performance of the plastic product in this state can be detected, and then the tensile testing of the plastic product can be made more comprehensive and the use effect is better.

[0041] In one case of this embodiment, the shifting mechanism 11 includes a transmission shaft 1101 rotatably arranged in the lifting block 10, and two symmetrically arranged cranks 1102 are installed on the transmission shaft 1101. The crank 1102 is rotatably connected to one end of the first connecting rod 1103, and the other end of the first connecting rod 1103 is rotatably connected to one end of the second connecting rod 1104, and the other end of the second connecting rod 1104 is connected to the shifting frame 14.

[0042] When testing the tensile properties of plastic products that are bent and deformed, the reciprocating mechanism 13 drives the lifting frame 8 to lift and lower, and the adjusting control mechanism 12 drives the transmission shaft 1101 to rotate, so that the crank 1102 rotates, and cooperates with the first connecting rod 1103 and the second connecting rod 1104 to drive the displacement frame 14 to move back and forth, so that the arc-shaped smooth plate 22 on the rotating column 21 can continuously squeeze the plastic product, so that various positions of the plastic product are continuously bent and deformed, thereby testing the tensile properties of the plastic product when it is bent and deformed. When testing the tensile properties of the plastic product when it is worn, the adjusting control mechanism 12 will limit and lock the displacement mechanism 11.

[0043] In one case of this embodiment, the adjustment and control mechanism 12 includes two groups of connecting plates 1201 installed on the fixed plate 9, each group of connecting plates 1201 is set to two, and a third telescopic member 1202 is installed on the connecting plate 1201. Preferably, the third telescopic member 1202 is set to a hydraulic rod, and the third telescopic member 1202 is connected to an L-shaped plate 1203, and a rack 1204 is installed at one end of the L-shaped plate 1203 close to the middle of the fixed plate 9, and a limiting groove 1205 is provided on the side of the L-shaped plate 1203 away from the rack 1204, and both ends of the transmission shaft 1101 are installed with a gear 1206 cooperating with the rack 1204 and a limiting block 1207 cooperating with the limiting groove 1205.

[0044] The adjustment control mechanism 12 has two states, namely, a driving state and a locking state. In the driving state, the rack 1204 on the L-shaped plate 1203 is meshed with the gear 1206 on the transmission shaft 1101, and the limit block 1207 is separated from the limit groove 1205. In the locking state, the limit block 1207 on the transmission shaft 1101 is slidably connected with the limit groove 1205, and the rack 1204 and the gear 1206 are separated. The conversion of the two states is achieved by adjusting the position of the L-shaped plate 1203 by the extension and contraction of the third telescopic member 1202. In the initial state, the adjustment control mechanism 12 is in the driving state. state, that is, the gear 1206 and the rack 1204 are in a meshing state. When it is necessary to change to the locked state, the limit block 1207 on the transmission shaft 1101 is first rotated to a position where it can be inserted into the limit groove 1205. At this time, the third telescopic member 1202 drives the L-shaped plate 1203 to approach the lifting block 10, so that the limit block 1207 is inserted into the limit groove 1205, and the rack 1204 is separated from the gear 1206, thereby locking the transmission shaft 1101. Among them, when the lifting frame 8 is raised to the top of the limit rod 7, the limit block 1207 can be smoothly inserted into the limit groove 1205.

[0045] It should be noted that in the first state, when the lifting frame 8 is lifted, the gear 1206 on the transmission shaft 1101 will move along the rack 1204, so that the gear 1206 rotates, and then drives the transmission shaft 1101 to rotate, thereby driving the shifting mechanism 11. In the second state, due to the cooperation of the limit block 1207 and the limit groove 1205, the gear 1206 is separated from the rack 1204, and the transmission shaft 1101 cannot rotate, thereby locking the shifting mechanism 11 and limiting the lifting and lowering position of the shifting frame 14.

[0046] In one case of this embodiment, the reciprocating mechanism 13 includes a driving member 1301 installed at the bottom of the detection box 1. Preferably, the driving member 1301 is configured as a servo motor, and the output end of the driving member 1301 is fixedly connected to a turntable 1302. A fixed column 1303 is installed at the eccentric position of the turntable 1302. The fixed column 1303 is slidably connected to a swing rod 1304, and two symmetrically distributed reciprocating rods 1305 connected to the lifting frame 8 are installed on the swing rod 1304.

[0047] The turntable 1302 is driven to rotate by the driving member 1301, and the fixed column 1303 and the swing rod 1304 on the turntable 1302 are cooperated to make the reciprocating rod 1305 drive the lifting frame 8 to move up and down along the limiting rod 7, thereby driving the rotating column 21 on the mounting frame 19 to move up and down reciprocatingly.

[0048] In one case of this embodiment, the limiting mechanism 24 includes two symmetrically distributed limiting slots 2404 opened at the end of the rotating shaft 20, and a limiting rod 2401 cooperating with the limiting slots 2404 is slidably arranged on the mounting frame 19. A pull plate 2402 is installed at the end of the limiting rod 2401 away from the rotating shaft 20, and an elastic member 2403 is arranged between the pull plate 2402 and the mounting frame 19. Preferably, the elastic member 2403 is configured as a spring.

[0049] When testing the tensile performance of plastic products that have bending deformation, the arc-shaped smooth plate 22 on the rotating column 21 is rotated to face the middle of the detection box 1, so that when the mounting frame 19 is lifted or lowered, the rotating column 21 slides more smoothly along the surface of the plastic product due to the action of the arc-shaped smooth plate 22. When it is necessary to test the tensile performance of plastic products that have wear, the limit rod 2401 is pulled out of the limit groove 2404 at the end of the rotating shaft 20 by pulling the pull plate 2402. At this time, the rotating shaft 20 can be rotated 180 degrees and the pull plate 2402 is released. Under the action of the elastic member 2403, the limit rod 2401 will be re-engaged in the limit groove 2404 of the rotating shaft 20, thereby rotating the arc-shaped polishing plate 23 on the rotating column 21 to face the middle of the detection box 1, so that the two sides of the plastic product can be continuously polished during the lifting and lowering of the mounting frame 19, thereby simulating the wear of the plastic product.

[0050] In one case of this embodiment, the clamping mechanism 6 includes two symmetrically distributed side plates 601 installed on the fixed seat 3 and the movable seat 5, and a screw rod 602 is threaded on the side plate 601. The screw rod 602 is rotatably connected to the clamping plate 603, and the clamping plate 603 is equipped with two symmetrically distributed guide rods 604 that are slidably connected to the side plate 601.

[0051] Place the two ends of the plastic product between the two clamping plates 603 of the fixed seat 3 and the movable seat 5 respectively, rotate the screw rod 602 so that the clamping plates 603 on both sides clamp and fix the two ends of the plastic product, and then drive the movable seat 5 to move under the action of the first telescopic member 4, so as to stretch the plastic product.

[0052] During the implementation of the present invention, when detecting the tensile performance of a plastic product that is bent and deformed, the two ends of the plastic product are clamped and fixed by the clamping mechanism 6 on the fixed seat 3 and the movable seat 5, and the movable seat 5 is driven to lift by the first telescopic member 4 to perform tensile testing on the plastic product. In the process of tensile testing of the plastic product, the mounting frame 19 is driven to move by the second telescopic member 17, so that the arc-shaped smooth plate 22 of the rotating column 21 on the mounting frame 19 contacts the plastic product, and then the lifting mechanism is driven to lift and reciprocate by the reciprocating mechanism 13. During the lifting and lowering of the lifting mechanism, the adjusting control mechanism 12 can drive the displacement mechanism 11 to drive the mounting frame 19 to move reciprocally, so that the arc-shaped smooth plate 22 on the rotating column 21 can continuously squeeze the plastic product, so that various positions of the plastic product continuously bend and deform, thereby detecting the tensile performance of the plastic product when bending and deforming occurs. In addition, when it is necessary to detect the tensile performance of the plastic product in the event of wear, first use the clamping mechanism 6 and Cooperate with the first telescopic member 4 to perform preliminary stretching of the plastic product, and then release the limit of the rotating shaft 20 by the limiting mechanism 24, so that the rotating shaft 20 rotates 180 degrees, so that the arc-shaped grinding plate 23 on the rotating column 21 rotates to the side away from the mounting frame 19, and the rotating shaft 20 is limited by the limiting mechanism 24 again, and at the same time, the control mechanism 12 is adjusted to the state of locking the displacement mechanism 11, thereby limiting and locking the displacement frame 14, and then the mounting frame 19 is driven to move by the second telescopic member 17, so that the arc-shaped grinding plate 23 on the rotating column 21 contacts the plastic product. At this time, under the action of the reciprocating mechanism 13, the lifting frame 8 will drive the arc-shaped grinding plate 23 of the rotating column 21 on the mounting frame 19 to continuously reciprocate and grind the two sides of the plastic product when it is reciprocated and lifted, thereby simulating the wear of the plastic product, and then the plastic product can be subjected to tensile testing, so that the tensile performance of the plastic product in this state can be detected, and then the tensile testing of the plastic product can be made more comprehensive and the use effect is better.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A durability testing device for degradable plastic products, comprising a testing box, characterized in that: The bottom of the detection box is equipped with a fixed seat, the top of the detection box is equipped with a first telescopic member, the first telescopic member is connected to a movable seat, the bottom of the detection box is equipped with two symmetrically distributed fixed plates and two groups of symmetrically arranged limit rods, a lifting frame is slidably arranged on the limit rod, two lifting blocks are installed on the lifting frame, and the two lifting blocks are staggered, two symmetrically distributed fixed cylinders are arranged on both sides of the lifting block, the fixed cylinder is slidably connected to the movable rod, the movable rod is fixedly connected to the displacement frame, a second telescopic member is installed in the displacement frame, the second telescopic member is connected to a sliding frame slidably connected to the displacement frame, the sliding frame is fixedly connected to the mounting frame, both ends of the mounting frame are rotatably provided with a rotating shaft, a rotating column is installed on the rotating shaft, an arc-shaped smooth plate and an arc-shaped polishing plate are installed on the outer wall of the rotating column, and the arc-shaped smooth plate and the arc-shaped polishing plate are annular as a whole, and also include: A clamping mechanism, which is arranged on the fixed seat and the movable seat and is used to clamp and fix the two ends of the plastic product; A displacement mechanism, which is arranged in the lifting block and connected to the displacement frame, and is used to push the mounting frame to perform displacement movement; An adjustment control mechanism, which is arranged on a fixed plate and is used to drive and lock the displacement mechanism; A reciprocating mechanism, which is disposed in the detection box and connected to the lifting frame, and is used to drive the lifting frame to perform reciprocating lifting; The limiting mechanism is arranged at both ends of the mounting frame and is used to limit the rotating shaft.

2. The durability testing device for degradable plastic products according to claim 1, characterized in that: The displacement mechanism includes a transmission shaft rotatably arranged in the lifting block, on which two symmetrically arranged cranks are installed. The crank is rotationally connected to one end of the first connecting rod, the other end of the first connecting rod is rotationally connected to one end of the second connecting rod, and the other end of the second connecting rod is connected to the displacement frame.

3. The durability testing device for degradable plastic products according to claim 2, characterized in that: The adjustment and control mechanism includes two groups of connecting plates installed on the fixed plate, each group of connecting plates is provided with two, a third telescopic member is installed on the connecting plate, the third telescopic member is connected to an L-shaped plate, a rack is installed at one end of the L-shaped plate close to the middle of the fixed plate, a limiting groove is provided on the side of the L-shaped plate away from the rack, and gears cooperating with the rack and limiting blocks cooperating with the limiting groove are installed at both ends of the transmission shaft.

4. The durability testing device for degradable plastic products according to claim 3, characterized in that: The reciprocating mechanism includes a driving member installed at the bottom of the detection box, the output end of the driving member is fixedly connected to a turntable, a fixed column is installed at the eccentric part of the turntable, the fixed column is slidably connected to a swing rod, and two symmetrically distributed reciprocating rods connected to the lifting frame are installed on the swing rod.

5. The durability testing device for degradable plastic products according to claim 1, characterized in that: The limiting mechanism includes two symmetrically distributed limiting slots opened at the ends of the rotating shaft, a limiting rod cooperating with the limiting slots is slidably arranged on the mounting frame, a pull plate is installed at one end of the limiting rod away from the rotating shaft, and an elastic member is arranged between the pull plate and the mounting frame.

6. The durability testing device for degradable plastic products according to claim 1, characterized in that: The clamping mechanism includes two symmetrically distributed side plates installed on a fixed seat and a movable seat, a screw rod is threaded on the side plate, the screw rod is rotatably connected to a clamping plate, and two symmetrically distributed guide rods are installed on the clamping plate and are slidably connected to the side plates.

7. The durability testing device for degradable plastic products according to claim 1, characterized in that: The detection box body is provided with a box door.

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