A device for detecting the strength of plastic packaging products after molding

Abstract

The present invention belongs to the field of strength testing of plastic packaging bags, and in particular relates to a device for testing the strength of plastic packaging products after they are formed, comprising a base equipped with a control panel, a cross-shaped multi-stage telescopic frame provided on the upper side of the base via a fixed bracket, a clamping mechanism 1 provided at each of the four corners of the multi-stage telescopic frame, a top support mechanism that can move up and down provided on the multi-stage telescopic frame, and four clamping mechanisms 1 cooperating with the top support mechanism to fix the bagged plastic products after they are unfolded. The multi-stage telescopic frame comprises a cross-shaped beam, the upper side of each section of the cross-shaped beam is fixedly connected to the fixed bracket via a connecting column, and the lower side of each section of the cross-shaped beam is provided with a slide rail. The present invention can not only simulate the overall stress state of the packaging bag in actual use, but also perform tension testing on the plastic packaging bag after cutting, which is more realistic and accurate than the traditional single local cutting testing method.

Description

Technical Field

[0001] The invention belongs to the field of strength detection of plastic packaging bags, and in particular relates to a strength detection device for plastic packaging products after molding. Background Art

[0002] The molding process of plastic packaging products primarily involves raw material preparation and film blowing. Plastic packaging products are widely used in food, pharmaceuticals, daily chemicals, electronics, logistics, and other fields, and their strength directly impacts the product's protective properties and user experience.

[0003] Plastic bags, films, express packaging, etc. usually need to be sampled and tested for strength after molding. The main testing tool used is a tensile strength testing machine. During the test, the molded plastic products need to be cut into strips first, and then the two ends of the strips of plastic products are clamped by the clamps on the tensile strength testing machine. Finally, one of the clamps is moved to pull the strip of plastic products for tensile strength testing.

[0004] The above-mentioned traditional tensile testing machine has the following defects when testing plastic packaging products: during testing, it can only test the plastic product after partial cutting, and cannot test the tensile strength of the plastic product as a whole. There are large testing limitations, and the data tested after partial cutting may have a large deviation from the data of the plastic product as a whole during actual use, and the test data has low reference value. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a device for detecting the strength of plastic packaging products after molding, which is used to solve the problems mentioned in the above background technology.

[0006] To achieve the above-mentioned objectives, the embodiments of the present application provide the following technical solutions: The present invention provides a device for testing the strength of plastic packaging products after molding, comprising a base equipped with a control panel, wherein a cross-shaped multi-stage telescopic frame is provided on the upper side of the base via a fixed bracket, wherein each of the four corners of the multi-stage telescopic frame is provided with a clamping mechanism (1), wherein the multi-stage telescopic frame is provided with a supporting mechanism that can move up and down, and wherein the four clamping mechanisms (1) cooperate with the supporting mechanism to secure the bagged plastic products after they are unfolded. The multi-stage telescopic frame comprises a cross-shaped crossbeam, wherein the upper side of each section of the cross-shaped crossbeam is fixedly connected to the fixed bracket via a connecting column, wherein the lower side of each section of the cross-shaped crossbeam is provided with a slide rail, wherein the slide rail is provided with a sliding assembly, and wherein the clamping mechanism (1) is connected to the sliding assembly. The supporting mechanism comprises a U-shaped movable frame, the two vertical sections of which are slidably connected to corresponding sections of the cross-shaped crossbeam. A horizontal plate is disposed between the opposing sides of the two vertical sections of the movable frame. A supporting plate is movably connected to the underside of each of the two vertical sections of the movable frame. An adjustment assembly is disposed between the two supporting plates and the horizontal plate, which is capable of adjusting the size of the supporting surface when the supporting plates act on the bagged plastic product. A second clamping mechanism is disposed on the horizontal plate, which cooperates with any one of the first clamping mechanisms to clamp and secure the strip-shaped plastic product.

[0007] According to an advantageous embodiment, an electric telescopic rod is fixedly provided on the fixed bracket, the telescopic end of the electric telescopic rod passes through the fixed bracket and is fixedly connected to a pressure sensor, and the pressure sensor is fixedly connected to the upper side of the horizontal section of the movable frame.

[0008] According to a favorable embodiment, a slide groove 1 is provided on the lower side of each section of the cross-shaped crossbeam, and the four sections of the slide groove 1 are connected to each other. The cross-section of the slide groove 1 is an inverted trapezoidal shape, and the slide rail is an inverted trapezoidal shape and is slidably arranged in the corresponding slide groove 1. A locking bolt is threadedly provided on the upper side of each section of the cross-shaped crossbeam, and the lower end of the locking bolt movably extends into the slide groove 1 and interferes with the upper side of the corresponding slide rail.

[0009] According to a favorable embodiment, a second slide groove is opened on the lower side of the slide rail, and the sliding assembly includes an adjusting screw rod rotatably arranged in the second slide groove and rotatably arranged along its length direction. A slider is threadedly connected to the adjusting screw rod, and the slider is connected to a clamping mechanism 1.

[0010] According to an advantageous embodiment, a guide support rod is fixedly provided in the length direction of the second slide groove, and the guide support rod slides through the corresponding sliding block.

[0011] The cam is fixedly provided with a U-shaped clamping plate and a U-shaped clamping plate, and a clamping plate is movably provided between the two vertical sections of the U-shaped clamping plate. One side of the clamping plate is fixedly connected to two sliding posts, and one end of the two sliding posts away from the clamping plate passes through the opposite sides of the U-shaped clamping plate and are fixedly connected to the connecting plate. The surface of the sliding post between the clamping plate and the vertical section of the U-shaped clamping plate is sleeved with a clamping spring, and the side wall of the vertical section of the U-shaped clamping plate close to the connecting plate is threadedly connected to a locking screw. One end of the locking screw extends into the interior of the U-shaped clamping plate and is rotatably connected to the clamping block, and the other end of the locking screw movably passes through the connecting plate and is fixedly connected to the rotating knob.

[0012] According to a favorable embodiment, a guide seat is fixedly provided on the top support plate, and a guide channel extending along its length and passing through the front and back is opened on the guide seat. A connecting shaft is movably provided in the guide channel, and the connecting shaft is fixedly connected to the lower side of the vertical section corresponding to the movable frame.

[0013] According to a favorable embodiment, the adjustment assembly includes an internal threaded sleeve rotatably arranged in the middle of the lower side of the horizontal plate, the lower end of the internal threaded sleeve is threadedly connected to the adjusting screw 2, the lower side of the adjusting screw 2 is fixedly connected to the connecting block, and the sides of the two top support plates close to each other are respectively rotatably connected to the connecting blocks.

[0014] According to a favorable embodiment, the second clamping mechanism includes a second U-shaped clamping plate fixedly arranged on the upper side of the horizontal plate, a second disc-shaped abutting plate movably arranged between the two vertical sections of the second U-shaped clamping plate, a second locking screw is threadedly connected to the vertical section on the front side of the second U-shaped clamping plate, the rear end of the second locking screw is rotatably connected to the front side of the second abutting plate, and the front end of the second locking screw is fixedly connected to a rotating handle.

[0015] According to an advantageous embodiment, a hot air blower is fixedly provided in the middle of the upper side of the cross beam, an air outlet of the hot air blower is fixedly connected to an exhaust pipe, and the lower end of the exhaust pipe is fixedly passed through the lower side of the cross beam.

[0016] Compared with the prior art, the device for detecting the strength of plastic packaging products after molding provided by the embodiment of the present invention has the following beneficial effects:

[0017] 1. In the present invention, four clamping mechanisms are used to fix the bag opening of a plastic packaging bag at multiple points, and an adjustable supporting mechanism is used to apply pressure to the bottom of the bag. This can simulate the overall stress state of the packaging bag in actual use, such as load-bearing and stretching. Compared with the local cutting detection method of the traditional method, the data is more realistic.

[0018] 2. In the present invention, the adjustment mechanism in the top support mechanism can adjust the angle between the two top support plates, and can switch between two modes: local conical pressure and large-area flat pressure, which respectively correspond to the testing of the local compressive strength and overall tensile strength of the packaging bag, and comprehensively evaluate its pressure-bearing performance.

[0019] 3. In the present invention, the multi-stage telescopic frame and the top support mechanism cooperate to test plastic packaging bag products of different models, and any one of the clamping mechanisms 1 on the multi-stage telescopic frame can be adjusted to be aligned with the clamping mechanism 2 up and down, so as to facilitate the tensile test of the cut strip film samples. It can quickly switch to the tensile test mode of the traditional strip sample to meet different testing needs without the need for additional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the external overall three-dimensional structure diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the connection structure of the relative positions of the multi-stage telescopic frame and the supporting mechanism in the present invention.

[0022] Figure 3 It is a bottom-up stereoscopic structural diagram of the multi-stage telescopic frame in the present invention.

[0023] Figure 4 This is an external three-dimensional structural diagram of the clamping mechanism 1 in the present invention.

[0024] Figure 5 This is an external three-dimensional structural diagram of the clamping mechanism 2 in the present invention.

[0025] Figure 6 This is a schematic diagram of the state when the present invention applies local pressure to the bottom of the plastic packaging bag.

[0026] Figure 7 This is a schematic diagram of the state when pressure is applied to the entire bottom of the plastic packaging bag according to the present invention.

[0027] Figure 8 This is a schematic diagram of the state when the clamping mechanism 1 and the clamping mechanism 2 cooperate to perform tension testing on a strip film sample in the present invention.

[0028] Reference numerals in the figure: 1, base; 2, multi-stage telescopic frame; 21, cross beam; 22, slide rail; 23, sliding assembly; 231, adjusting screw 1; 232, slider; 3, clamping mechanism 1; 31, turntable; 32, U-shaped clamping plate 1; 33, tightening plate 1; 34, slide column; 35, connecting plate; 36, tightening spring; 37, locking screw 1; 38, tightening block; 4, supporting mechanism; 41, Movable frame; 42. Horizontal plate; 43. Top support plate; 44. Adjustment assembly; 441. Internally threaded sleeve; 442. Adjustment screw 2; 443. Connecting block; 5. Clamping mechanism 2; 51. U-shaped clamping plate 2; 52. Clamping plate 2; 53. Locking screw 2; 6. Electric telescopic rod; 7. Locking bolt; 8. Guide seat; 9. Hot air blower; 10. Fixed bracket; 11. Plastic packaging bag; 12. Strip film. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 8 This application is described in further detail.

[0030] Please refer to Figure 1 、 Figure 6 and Figure 8 A device for testing the strength of plastic packaging products after molding, specifically for testing samples of plastic packaging bags 11 and strip films 12. The device comprises a base 1 equipped with a control panel. A cross-shaped multi-stage telescopic frame 2 is mounted on the upper side of the base 1 via a fixed bracket 10. Clamping mechanisms 3 are located at each of the four corners of the multi-stage telescopic frame 2. A vertically movable supporting mechanism 4 is mounted on the multi-stage telescopic frame 2. An electric telescopic rod 6 is fixed to the fixed bracket 10. The telescopic end of the electric telescopic rod 6 extends through the fixed bracket 10 and is fixedly connected to a pressure sensor (not shown). The pressure sensor is connected to the supporting mechanism 4. The end of the plastic packaging bag 11 is clamped and fixed at different positions at the same horizontal height by four clamping mechanisms 3. The plastic packaging bag 11 is placed on the surface of the supporting mechanism 4, which supports the bottom of the plastic packaging bag 11. The electric telescopic rod 6 then controls the supporting mechanism 4 to move downward, pushing the plastic packaging bag 11 upward, and detecting pressure changes via the pressure sensor.

[0031] It should be noted that the pressure sensor converts the sensed pressure into an electrical signal, amplifies and modulates the electrical signal, and finally converts the electrical signal into a digital signal, and the digital result is displayed on the control panel.

[0032] See Figure 1 、 Figure 2 and Figure 3The multi-stage telescopic frame 2 includes a cross-shaped beam 21. The upper side of each section of the cross-shaped beam 21 is fixedly connected to the fixed bracket 10 through a connecting column. The lower side of each section of the cross-shaped beam 21 is provided with a slide rail 22. The slide rail 22 is provided with a sliding assembly 23. The clamping mechanism 3 is connected to the sliding assembly 23.

[0033] See Figure 2 、 Figure 3 and Figure 6 Each section of the cross-shaped beam 21 is provided with a chute 1 on its underside, and the four chute 1 sections are interconnected, allowing slide rails 22 in the same horizontal direction to slide from their own chute 1 into another chute 1. The chute 1 cross-section is inverted trapezoidal in shape, and the slide rails 22 are also inverted trapezoidal and slide within their corresponding chute 1. A locking bolt 7 is threadedly mounted on the upper side of each section of the cross-shaped beam 21. The lower end of the locking bolt 7 flexibly extends into the chute 1 and contacts the upper side of the corresponding slide rail 22.

[0034] See Figure 3 The lower side of the slide rail 22 defines a second slideway. The slide assembly 23 includes an adjustment screw 1 231 rotatably disposed within the second slideway and rotatably disposed along its length. One end of the adjustment screw 1 231 movably extends through the side wall of the slide rail 22 and is fixedly mounted with an adjustment knob (not shown). A slider 232 is threadedly connected to the adjustment screw 1 231, and the slider 232 is connected to the clamping mechanism 1 3. A guide support rod is also fixedly disposed along the length of the second slideway. The guide support rod slides through the corresponding slider 232 to provide auxiliary support and guidance for the slider 232.

[0035] During operation, to facilitate the inspection of different types of plastic packaging bags 11, the slider 232 can be moved along the slide rail 22 by rotating the adjusting screw 1 231 to adjust the position of the clamping mechanism 1 3. At the same time, the operator can also control the slide rail 22 to move along the slide groove 1 on the lower side of the cross beam 21 and lock it with the locking bolt 7 to further adjust the position of the clamping mechanism 1 3. This allows the four clamping mechanisms 1 3 to change positions according to clamping needs, thereby expanding the inspection range of plastic packaging bags 11.

[0036] See Figure 3 and Figure 4The clamping mechanism 3 includes a turntable 31 rotatably arranged on the lower side of the slider 232, and an inverted U-shaped clamping plate 32 is fixedly connected to the lower side of the turntable 31, and a clamping plate 33 is movably arranged between the two vertical sections of the U-shaped clamping plate 32, and one side of the clamping plate 33 is fixedly connected to two sliding posts 34, and one end of the two sliding posts 34 away from the clamping plate 33 passes through the opposite sides of the U-shaped clamping plate 32 and is fixedly connected to the connecting plate 35. Initially, it is pre-fixed by the tightening spring 36, and after the position is adjusted, it is completely locked by the locking screw 37.

[0037] In specific work, when testing the plastic packaging bag 11 with handles, it is only necessary to hang the two handles of the plastic packaging bag 11 on any two opposite locking screws 37 end positions. At this time, the plastic packaging bag 11 is placed on the surface of the supporting mechanism 4, and then continue the tensile test.

[0038] When the plastic packaging bag 11 without a handle is inspected, in order to ensure that the four clamping mechanisms 3 are at the same level when clamping the bag opening of the plastic packaging product, the bag opening is first unfolded and placed on the supporting mechanism 4. The staff manually pulls outward the connecting plate 35 on the outer side of any U-shaped clamping plate 32, so that the clamping plate 33 that originally abuts against the inner wall of the vertical section corresponding to the U-shaped clamping plate 32 is separated, leaving a gap, and then the bag opening is aligned with the U-shaped clamping plate 32 and inserted to make the bag opening The plastic packaging bag 11 is then inserted into the gap, and then the connecting plate 35 is loosened, so that the holding plate 133 is reset under the action of the holding spring 36, and a part of the bag opening is pressed against the U-shaped clamping plate 132. The bag opening is fixed in the four U-shaped clamping plates 132 in the same way. Then the staff makes fine adjustments according to the unfolded shape of the plastic packaging bag 11 at this time. Since the bag opening is fixed by the pressure of the holding spring 36, when the plastic packaging bag 11 is pulled, the surface of the bag opening can slide relative to the holding plate 133. Therefore, when the plastic packaging bag 11 is not in a flat state after being fixed, the staff can gently pull the plastic packaging bag 11 to make fine adjustments to the uneven position, so as to ensure that the plastic packaging bag 11 remains flat. Figure 6 and Figure 7After adjustment, the locking screw 1 37 is rotated to move the abutment block 38 toward the corresponding surface of the abutment plate 1 33 , ultimately causing the abutment block 38 to apply pressure to the abutment plate 1 33 , allowing the abutment plate 1 33 to completely lock the end surface of the plastic packaging bag 11 . The abutment plate 1 33 is made of a rubber material with a high friction coefficient. This prevents it from sliding relative to the abutment plate 1 33 when subjected to tension, thus cooperating with the subsequent support mechanism 4 to perform tension testing.

[0039] See Figure 2 The supporting mechanism 4 includes an inverted U-shaped movable frame 41. The pressure sensor is fixedly connected to the upper side of the horizontal section of the movable frame 41. The two vertical sections of the movable frame 41 are slidably connected to the corresponding sections of the cross-shaped crossbeam 21. A horizontal plate 42 is provided between the opposite sides of the two vertical sections of the movable frame 41. The lower sides of the two vertical sections of the movable frame 41 are each movably connected to a supporting plate 43. A guide seat 8 is fixedly provided on the supporting plate 43. The guide seat 8 has a guide channel extending along its length and passing through it from front to back. A connecting shaft is movably provided in the guide channel and is fixedly connected to the lower side of the corresponding vertical section of the movable frame 41. An adjustment component 44 is provided between the two supporting plates 43 and the horizontal plate 42 to adjust the size of the supporting surface when the supporting plates 43 act on the interior of the plastic packaging bag 11.

[0040] See Figure 2 The adjusting assembly 44 includes an internal threaded sleeve 441 rotatably arranged in the middle of the lower side of the horizontal plate 42, the lower end of the internal threaded sleeve 441 is threadedly connected to the adjusting screw 2 442, and the lower side of the adjusting screw 2 442 is fixedly connected to the connecting block 443, and the two supporting plates 43 are rotatably connected to the connecting block 443 on the sides close to each other.

[0041] During specific operation, by rotating the internal threaded sleeve 441, the adjusting screw 442 can be moved upward to drive the connecting block 443 to move upward. The upward movement of the connecting block 443 can drive the two top support plates 43 to rotate toward each other, and adjust the angle between the two top support plates 43, so that the top support surface formed between the two top support plates 43 can gradually switch from a partially conical top support surface to a longer and flat top support surface.

[0042] When the two supporting plates 43 are tilted to form a triangular cone, as shown in FIG. Figure 6 As shown, when the telescopic end of the electric telescopic rod 6 extends and drives the movable frame 41 to move downward, the two top support plates 43 move downward to apply local pressure to the bottom of the plastic packaging bag 11, so as to detect the tension of the plastic packaging bag 11 under local pressure.

[0043] When the two supporting plates 43 are kept in a horizontal state, Figure 7As shown, the top support surface is a long flat surface. When the two top support plates 43 move downward as a whole, they will exert pressure on a large area of ​​the bottom of the packaging bag, which can detect the tension of the plastic packaging bag 11 under the overall pressure state.

[0044] See Figure 2 and Figure 5 The clamping mechanism 5 includes a U-shaped clamping plate 51 fixedly arranged on the upper side of the horizontal plate 42, and a disc-shaped abutting plate 52 is movably arranged between the two vertical sections of the U-shaped clamping plate 51. A locking screw 53 is threadedly connected to the vertical section on the front side of the U-shaped clamping plate 51. The rear end of the locking screw 53 is rotatably connected to the front side of the abutting plate 52, and the front end of the locking screw 53 is fixedly connected to a rotating handle.

[0045] In specific operation, this solution can not only detect the complete plastic packaging bag 11, but also detect the plastic packaging bag 11 after it is cut into strips.

[0046] Specifically: Slide and retract any one of the slide rails 22 into the slide groove 1, and then position the slider 232 on the lower side of the slide rail 22 so that it is directly above the clamping mechanism 2 5. At this time, the clamping mechanism 1 3 and the clamping mechanism 2 5 on the slider 232 correspond to each other. Then, insert the cut strip film 12 into the U-shaped clamping plate 1 32 and the U-shaped clamping plate 2 51 respectively, and rotate the locking screw 1 37 and the locking screw 2 53 to lock them during this process to perform a tensile test on the strip film 12, as shown in the figure. Figure 8 shown.

[0047] See Figure 2 and Figure 3 A hot air blower 9 is fixedly installed in the middle of the upper side of the cross beam 21. The air outlet of the hot air blower 9 is fixedly connected to an exhaust pipe, and the lower end of the exhaust pipe is fixedly passed through the lower side of the cross beam 21. The temperature of the hot air blower 9 can be adjusted from 25°C to 80°C and is set through the control panel.

[0048] During specific work, in order to be able to detect the tension of the plastic packaging bag 11 under actual use, during the detection process, hot air can be delivered toward the inside of the plastic packaging bag 11 through the hot air blower 9 to simulate a high temperature environment, increase the ambient temperature, and detect the tension of the plastic packaging bag 11 or the strip film 12 under high temperature conditions.

[0049] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for testing the strength of plastic packaging products after molding, comprising a base equipped with a control panel, characterized in that: A cross-shaped multi-stage telescopic frame is provided on the upper side of the base through a fixed bracket. A clamping mechanism is provided at each of the four corners of the multi-stage telescopic frame. A supporting mechanism that can move up and down is provided on the multi-stage telescopic frame. The four clamping mechanisms cooperate with the supporting mechanism to fix the bagged plastic product after it is unfolded. The multi-stage telescopic frame includes a cross-shaped crossbeam, the upper side of each section of the cross-shaped crossbeam is fixedly connected to the fixed bracket through a connecting column, the lower side of each section of the cross-shaped crossbeam is provided with a slide rail, the slide rail is provided with a sliding assembly, and the clamping mechanism is connected to the sliding assembly; The supporting mechanism includes a U-shaped movable frame, wherein the two vertical sections of the movable frame are respectively slidably connected to the corresponding sections of the cross-shaped crossbeam, a cross plate is commonly provided between the opposite sides of the two vertical sections of the movable frame, and the lower sides of the two vertical sections of the movable frame are movably connected to a supporting plate, and an adjustment component is commonly provided between the two supporting plates and the cross plate to adjust the size of the supporting surface when the supporting plate acts on the inside of the bag-type plastic product; The horizontal plate is provided with a clamping mechanism 2 which cooperates with any one of the clamping mechanisms 1 to clamp and fix the strip-shaped plastic product; An electric telescopic rod is fixedly provided on the fixed bracket. The telescopic end of the electric telescopic rod passes through the fixed bracket and is fixedly connected to a pressure sensor. The pressure sensor is fixedly connected to the upper side of the horizontal section of the movable frame.

2. A device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: A slide groove is provided on the lower side of each section of the cross-shaped crossbeam, and the four sections of the slide grooves are connected to each other. The cross-section of the slide groove is an inverted trapezoidal shape, and the slide rail is an inverted trapezoidal shape and is slidably arranged in the corresponding slide groove. A locking bolt is threadedly arranged on the upper side of each section of the cross-shaped crossbeam, and the lower end of the locking bolt movably extends into the slide groove and contacts the upper side of the corresponding slide rail.

3. A device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: A second slide groove is provided on the lower side of the slide rail, and the sliding assembly includes an adjusting screw rod rotatably arranged in the second slide groove and rotatably arranged along its length direction. A slider is threadedly connected to the adjusting screw rod, and the slider is connected to a clamping mechanism rod.

4. A device for detecting the strength of plastic packaging products after molding according to claim 3, characterized in that: A guide support rod is fixedly provided in the length direction of the second slide groove, and the guide support rod slides through the corresponding sliding block.

5. The device for detecting the strength of plastic packaging products after molding according to claim 3, characterized in that: When the handle is turned, the two ends of the lever are rotated to move upwards to push the lever to move upwards, so that the push-pull latch can be fixed to the top of the lever and the other end of the lever is locked.

6. The device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: A guide seat is fixedly provided on the top support plate, and a guide channel extending along its length direction and passing through the front and back is opened on the guide seat. A connecting shaft is movably provided in the guide channel, and the connecting shaft is fixedly connected to the lower side of the vertical section corresponding to the movable frame.

7. The device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: The adjustment assembly includes an internal threaded sleeve rotatably arranged in the middle of the lower side of the horizontal plate, the lower end of the internal threaded sleeve is threadedly connected to the adjusting screw 2, the lower side of the adjusting screw 2 is fixedly connected to the connecting block, and the sides of the two top support plates close to each other are respectively rotatably connected to the connecting blocks.

8. The device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: The second clamping mechanism includes a second U-shaped clamping plate fixedly arranged on the upper side of the horizontal plate, a second disc-shaped clamping plate movably arranged between the two vertical sections of the second U-shaped clamping plate, a second locking screw is threadedly connected to the vertical section on the front side of the second U-shaped clamping plate, the rear end of the second locking screw is rotatably connected to the front side of the second clamping plate, and the front end of the second locking screw is fixedly connected to a rotating handle.

9. The device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: A hot air blower is fixedly provided in the middle of the upper side of the cross-shaped cross beam, and an air outlet of the hot air blower is fixedly connected to an exhaust pipe, and the lower end of the exhaust pipe is fixedly passed through the lower side of the cross-shaped cross beam.

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