Strength detection device for molded plastic packaging product

Abstract

The invention belongs to the field of strength detection of plastic packaging bags, and particularly relates to a device for detecting the strength of a formed plastic packaging product, which comprises a base provided with a control panel, the upper side of the base is provided with a cross-shaped multi-stage telescopic frame through a fixed bracket, and the four corners of the multi-stage telescopic frame are respectively provided with a clamping mechanism I; the multi-stage telescopic frame is provided with a jacking and supporting mechanism capable of moving up and down, and the four first clamping mechanisms are matched with the jacking and supporting mechanism to fix the bag type plastic product after the bag type plastic product is unfolded. The multi-stage telescopic frame comprises a cross-shaped cross beam, the upper side of each section of the cross-shaped cross beam is fixedly connected with the fixing support through a connecting column, and a sliding rail is arranged on the lower side of each section of the cross-shaped cross beam. The overall stress state of the packaging bag in real use can be simulated, meanwhile, tension detection can be conducted after the plastic packaging bag is cut, and compared with a traditional single local cutting detection mode, the plastic packaging bag tension detection device is more real and accurate.

Description

Technical Field

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

[0002] The molding of plastic packaging products mainly includes raw material modulation and blown film molding. Plastic packaging products are widely used in the fields of food, medicine, daily chemicals, electronics, logistics, etc., and their strength directly affects the protection performance of products and the user experience.

[0003] For plastic bags, films, express packaging, etc., it is usually necessary to conduct spot checks for strength detection after molding. The main detection tool used is a tensile strength testing machine. During detection, the molded plastic products need to be first cut into strips, and then the two ends of the strip-shaped plastic products are respectively clamped by the clamps on the tensile strength testing machine. Finally, the strip-shaped plastic products are pulled by moving one of the clamps to conduct tensile strength testing.

[0004] The above-mentioned traditional tensile testing machine has the following defects when detecting plastic packaging products: during detection, it can only detect after locally cutting the plastic products, and cannot detect the overall tensile strength of the plastic products, with relatively large detection limitations. Moreover, the data obtained from such local cutting and detection may have a large deviation from the data of the overall plastic products during actual use, and the reference value of the detected data is low. Summary of the Invention

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

[0006] To achieve the above object, the embodiments of the present application provide the following technical solutions: The present invention provides a strength detection device for plastic packaging products after molding, including a base equipped with a control panel. On the upper side of the base, a cross-shaped multi-stage telescopic frame is arranged through a fixed bracket. Clamping mechanisms I are arranged at the four corners of the multi-stage telescopic frame. A top support mechanism that can move up and down is arranged on the multi-stage telescopic frame. The four clamping mechanisms I cooperate with the top support mechanism to fix the bag-shaped plastic products after unfolding. The multi-stage telescopic frame includes a cross-shaped crossbeam. Each upper side of the cross-shaped crossbeam is fixedly connected to the fixed bracket through a connecting column. Each lower side of the cross-shaped crossbeam is provided with a slide rail. A sliding component is arranged on the slide rail. The clamping mechanism I is connected to the sliding component. The top support mechanism includes a U-shaped movable frame. 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 arranged between the opposite sides of the two vertical sections of the movable frame. The lower sides of the two vertical sections of the movable frame are both movably connected to a top support plate. An adjusting component that can adjust the size of the support surface when the top support plate acts on the inside of the bag-shaped plastic product is commonly arranged between the two top support plates and the cross plate. A clamping mechanism II for clamping and fixing strip-shaped plastic products is arranged on the cross plate and cooperates with any one of the clamping mechanisms I.

[0007] According to an advantageous embodiment, an electric telescopic rod is fixedly arranged on the fixed bracket. The telescopic end of the electric telescopic rod penetrates 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.

[0008] According to an advantageous embodiment, a chute I is opened on each lower side of the cross-shaped crossbeam, and the four chutes I communicate with each other. The cross-section of the chute I is trapezoidal in reverse. The slide rail is trapezoidal in reverse and is slidably arranged in the corresponding chute I. A locking bolt is threadedly arranged on each upper side of the cross-shaped crossbeam. The lower end of the locking bolt extends movably into the chute I and abuts against the upper side of the corresponding slide rail.

[0009] According to an advantageous embodiment, a chute II is opened on the lower side of the slide rail. The sliding component includes an adjusting screw rod I that is rotatably arranged in the chute II and rotates along its length direction. A slider is threadedly connected to the adjusting screw rod I. The slider is connected to the clamping mechanism I.

[0010] According to an advantageous embodiment, a guiding support rod is fixedly arranged in the length direction of the chute II. The guiding support rod slidably penetrates through the corresponding slider.

[0011] According to a preferred embodiment, the first clamping mechanism includes a turntable rotatably disposed on the lower side of the slider. A U-shaped clamping plate I is fixedly connected to the lower side of the turntable. A pressing plate I is movably disposed between the two vertical segments of the U-shaped clamping plate I. Two sliding columns are fixedly connected to one side of the pressing plate I. The ends of the two sliding columns away from the pressing plate I both penetrate through the opposite sides of the U-shaped clamping plate I and are commonly fixedly connected to a connecting plate. A pressing spring is sleeved on the surface of the sliding column between the pressing plate I and the vertical segment of the U-shaped clamping plate I. A locking screw I is threadedly connected to the side wall of the vertical segment of the U-shaped clamping plate I close to the connecting plate. One end of the locking screw I extends into the interior of the U-shaped clamping plate I and is rotatably connected to a pressing block. The other end of the locking screw I movably penetrates through the connecting plate and is fixedly connected to a rotating knob.

[0012] According to a preferred embodiment, a guiding seat is fixedly disposed on the top supporting plate. A guiding channel extending along its length direction and penetrating through the front and back is formed on the guiding seat. A connecting shaft is movably disposed in the guiding channel. The connecting shaft is fixedly connected to the lower side of the corresponding vertical segment of the movable frame.

[0013] According to a preferred embodiment, the adjusting assembly includes an internally threaded sleeve rotatably disposed in the middle of the lower side of the cross plate. An adjusting screw II is threadedly connected to the lower end of the internally threaded sleeve. A connecting block is fixedly connected to the lower side of the adjusting screw II. One side of the two top supporting plates close to each other is respectively rotatably connected to the connecting block.

[0014] According to a preferred embodiment, the second clamping mechanism includes a U-shaped clamping plate II fixedly disposed on the upper side of the cross plate. A disc-shaped pressing plate II is movably disposed between the two vertical segments of the U-shaped clamping plate II. A locking screw II is threadedly connected to the front vertical segment of the U-shaped clamping plate II. The rear end of the locking screw II is rotatably connected to the front side of the pressing plate II. The front end of the locking screw II is fixedly connected to a rotating handle.

[0015] According to a preferred embodiment, a hot air blower is fixedly disposed in the middle of the upper side of the cross-shaped beam. An air discharge pipe is fixedly connected to the air outlet of the hot air blower. The lower end of the air discharge pipe fixedly penetrates through the lower side of the cross-shaped beam.

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

[0017] 1. In the present invention, the bag mouth of the plastic packaging bag is fixed at multiple points by four first clamping mechanisms, and the bottom of the bag is pressed by combining the adjustable top supporting mechanism, which can simulate the overall stress state of the packaging bag in actual use, such as load bearing and stretching, etc. The data is more real compared with the local cutting detection method of the traditional method.

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

[0019] 3. In the present invention, the multi-stage telescopic frame and the top support mechanism cooperate to be able to detect plastic packaging bag products of different models, and any one of the clamping mechanisms on the multi-stage telescopic frame can be adjusted to be vertically aligned with the clamping mechanism two, which is convenient for tensile testing of the cut strip-shaped film sample, and can quickly switch to the tensile test mode of traditional strip-shaped samples, meeting different detection requirements without additional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0023] Figure 4 It is an external three-dimensional structure diagram of the first clamping mechanism in the present invention.

[0024] Figure 5 It is an external three-dimensional structure diagram of the second clamping mechanism in the present invention.

[0025] Figure 6 It is a schematic state diagram when the present invention presses the local part of the bottom of the plastic packaging bag.

[0026] Figure 7 It is a schematic state diagram when the present invention presses the whole bottom of the plastic packaging bag.

[0027] Figure 8 It is a schematic state diagram when the first clamping mechanism and the second clamping mechanism in the present invention cooperate to conduct tensile testing on the strip-shaped film sample.

[0028] Reference numerals in the drawings: 1, base; 2, multi-stage telescopic frame; 21, cross-shaped crossbeam; 22, slide rail; 23, sliding assembly; 231, first adjusting screw; 232, slider; 3, first clamping mechanism; 31, turntable; 32, first U-shaped clamping plate; 33, first abutting plate; 34, sliding column; 35, connecting plate; 36, abutting spring; 37, first locking screw; 38, abutting block; 4, top support mechanism; 41, movable frame; 42, cross plate; 43, top support plate; 44, adjusting assembly; 441, internally threaded sleeve; 442, second adjusting screw; 443, connecting block; 5, second clamping mechanism; 51, second U-shaped clamping plate; 52, second abutting plate; 53, second locking screw; 6, electric telescopic rod; 7, locking bolt; 8, guide seat; 9, hot air blower; 10, fixed bracket; 11, plastic packaging bag; 12, strip-shaped film. Detailed implementation manners

[0029] The following will Figure 1 - with reference to the Figure 8 make a further detailed description of the present application.

[0030] Please refer to Figure 1 , Figure 6 and Figure 8 , a strength detection device for plastic packaging products after molding, specifically for detecting samples of plastic packaging bags 11 and strip-shaped films 12. It includes a base 1 equipped with a control panel. A cross-shaped multi-stage telescopic frame 2 is provided on the upper side of the base 1 through a fixed bracket 10. First clamping mechanisms 3 are provided at the four corners of the multi-stage telescopic frame 2. A top support mechanism 4 that can move up and down is provided on the multi-stage telescopic frame 2. An electric telescopic rod 6 is fixedly provided on the fixed bracket 10. The telescopic end of the electric telescopic rod 6 penetrates through the fixed bracket 10 and is fixedly connected with a pressure sensor (not shown in the figure). The pressure sensor is connected to the top support mechanism 4. The ports of the plastic packaging bag 11 at different positions at the same horizontal height are respectively clamped and fixed by the four first clamping mechanisms 3. At the same time, the plastic packaging bag 11 is sleeved on the surface of the top support mechanism 4. The bottom of the plastic packaging bag 11 is supported by the top support mechanism 4. Then, the electric telescopic rod 6 is used to control the top support mechanism 4 to move downward to push the plastic packaging bag 11 and the pressure change is detected by 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. The digital result is displayed on the control panel.

[0032] Refer to Figure 1 , Figure 2 and Figure 3, the multi-stage telescopic rack 2 includes a cross-shaped crossbeam 21. The upper side of each section of the cross-shaped crossbeam 21 is fixedly connected to the fixed bracket 10 through a connecting column. The lower side of each section of the cross-shaped crossbeam 21 is provided with a slide rail 22. A sliding component 23 is arranged on the slide rail 22, and the clamping mechanism I 3 is connected to the sliding component 23.

[0033] Refer to Figure 2 , Figure 3 and Figure 6 , a chute I is opened on the lower side of each section of the cross-shaped crossbeam 21, and the four chutes I are interconnected, so that the slide rails 22 in the same horizontal direction can slide into another chute I from their own chute I. The cross-section of the chute I is trapezoidal in reverse, the slide rail 22 is trapezoidal in reverse and is slidably arranged in the corresponding chute I. A locking bolt 7 is threadedly arranged on the upper side of each section of the cross-shaped crossbeam 21. The lower end of the locking bolt 7 extends movably into the chute I and abuts against the upper side of the corresponding slide rail 22.

[0034] Refer to Figure 3 , a chute II is opened on the lower side of the slide rail 22. The sliding component 23 includes an adjusting screw rod I 231 rotatably arranged in the chute II and rotatably arranged along its length direction. One end of the adjusting screw rod I 231 movably penetrates through the side wall of the slide rail 22 and is fixedly provided with an adjusting knob (not shown in the figure). A slider 232 is threadedly connected to the adjusting screw rod I 231, and the slider 232 is connected to the clamping mechanism I 3. A guiding support rod is also fixedly arranged in the length direction of the chute II. The guiding support rod slidably penetrates through the corresponding slider 232 for assisting in supporting and guiding the slider 232.

[0035] During specific operation, in order to facilitate the detection of plastic packaging bags 11 of different models, by rotating the adjusting screw rod I 231, the slider 232 can be moved along the slide rail 22 to adjust the position of the clamping mechanism I 3. At the same time, the staff can also control the slide rail 22 to move along the chute I on the lower side of the cross-shaped crossbeam 21 and lock it through the locking bolt 7 to further adjust the position of the clamping mechanism I 3. So that the four clamping mechanisms I 3 can change their positions according to the clamping needs, expanding the detection range of the plastic packaging bag 11.

[0036] Refer to Figure 3 and Figure 4, the first clamping mechanism 3 includes a turntable 31 rotatably arranged on the lower side of the slider 232. A U-shaped clamping plate 32 is fixedly connected to the lower side of the turntable 31. A first pressing plate 33 is movably arranged between the two vertical sections of the U-shaped clamping plate 32. Two sliding columns 34 are fixedly connected to one side of the first pressing plate 33. The ends of the two sliding columns 34 away from the first pressing plate 33 penetrate through the opposite sides of the U-shaped clamping plate 32 and are fixedly connected to a connecting plate 35 together. A pressing spring 36 is sleeved on the surface of the sliding column 34 between the first pressing plate 33 and the vertical section of the U-shaped clamping plate 32. A first locking screw 37 is threadedly connected to the side wall of the vertical section of the U-shaped clamping plate 32 close to the connecting plate 35. One end of the first locking screw 37 extends into the interior of the U-shaped clamping plate 32 and is rotatably connected to a pressing block 38. The other end of the first locking screw 37 movably penetrates through the connecting plate 35 and is fixedly connected to a rotating knob. Initially, it is pre-fixed by the pressing spring 36, and after adjusting the position, it is completely locked by the first locking screw 37.

[0037] During specific operation, when detecting the plastic packaging bag 11 with handles, only need to hang the two handles of the plastic packaging bag 11 on the ports of any two opposite first locking screws 37 respectively. At this time, the plastic packaging bag 11 is sleeved on the surface of the top support mechanism 4, and then the tensile test can be continued.

[0038] When detecting the plastic packaging bag 11 without handles, in order to ensure that the clamping positions of the four first clamping mechanisms 3 on the bag mouth of the plastic packaging product are all at the same horizontal height, first unfold the bag mouth of the packaging bag and sleeve it on the top support mechanism 4. The staff pulls the connecting plate 35 outside any one of the U-shaped clamping plates 32 by hand, so that the first pressing plate 33 originally in contact with the inner wall of the corresponding vertical section of the U-shaped clamping plate 32 is separated, leaving a gap. Then align the bag mouth with the U-shaped clamping plate 32 and insert the bag mouth part into this gap. Then release the connecting plate 35, so that the first pressing plate 33 resets under the action of the pressing spring 36, and part of the bag mouth is pressed against the inside of this U-shaped clamping plate 32. Fix the bag mouth in the four U-shaped clamping plates 32 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 fixation of the bag mouth is through the pressure of the pressing spring 36, when the plastic packaging bag 11 is subjected to tensile force, relative sliding can occur between the surface of the bag mouth and the first pressing plate 33. 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 positions, so as to ensure that the plastic packaging bag 11 remains flat, as Figure 6 and Figure 7As shown. After adjustment, by rotating the locking screw 37, the pressing block 38 moves towards the surface of the corresponding first pressing plate 33, and finally the pressing block 38 applies pressure to the first pressing plate 33, enabling the first pressing plate 33 to completely lock the port surface of the plastic packaging bag 11. The first pressing plate 33 is made of rubber material with a high coefficient of friction, so that it will no longer slide relative to the first pressing plate 33 when subjected to tensile force later, and cooperate with the subsequent jacking mechanism 4 for tensile force detection.

[0039] Refer to Figure 2 , the jacking mechanism 4 includes a 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 respectively slidably connected to the corresponding sections of the cross-shaped crossbeam 21. A cross plate 42 is jointly arranged 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 both movably connected with jacking plates 43. A guide seat 8 is fixedly arranged on the jacking plate 43. A guide channel extending along its length direction and penetrating through the front and back is opened in the guide seat 8. A connecting shaft is movably arranged in the guide channel, and the connecting shaft is fixedly connected to the lower side of the corresponding vertical section of the movable frame 41. An adjusting assembly 44 capable of adjusting the size of the supporting surface when the jacking plate 43 acts on the inside of the plastic packaging bag 11 is jointly arranged between the two jacking plates 43 and the cross plate 42.

[0040] Refer to Figure 2 , the adjusting assembly 44 includes an internally threaded sleeve 441 rotatably arranged in the middle of the lower side of the cross plate 42. The lower end of the internally threaded sleeve 441 is threadedly connected with an adjusting screw 442. A connecting block 443 is fixedly connected to the lower side of the adjusting screw 442. The two jacking plates 43 are respectively rotatably connected to the connecting block 443 on the side close to each other.

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

[0042] When the two jacking plates 43 are inclined in a triangular cone shape, as Figure 6 shown, when the telescopic end of the electric telescopic rod 6 extends and drives the movable frame 41 to move downward, the downward movement of the two jacking plates 43 will locally press the bottom of the plastic packaging bag 11, and the tensile force condition under the local pressure of the plastic packaging bag 11 can be detected.

[0043] When the two jacking plates 43 are in a horizontal state, as Figure 7As shown, at this time, the top support surface is a relatively 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, and the tensile force of the plastic packaging bag 11 under the overall bearing pressure can be detected.

[0044] Refer to Figure 2 and Figure 5 As shown in FIGS. and, the second clamping mechanism 5 includes a U-shaped clamping plate 51 fixedly arranged on the upper side of the cross plate 42. A disk-shaped pressing plate 52 is movably arranged between the two vertical sections of the U-shaped clamping plate 51. A second locking screw 53 is threadedly connected to the front vertical section of the U-shaped clamping plate 51. The rear end of the second locking screw 53 is rotatably connected to the front side of the pressing plate 52, and the front end of the second locking screw 53 is fixedly connected with a rotating handle.

[0045] During 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 any one of the slide rails 22 into the first chute in a retracted manner, and then at the position of the slider 232 on the lower side of the slide rail 22, make it located directly above the second clamping mechanism 5. At this time, the first clamping mechanism 3 on the slider 232 and the second clamping mechanism 5 are vertically corresponding. Then insert the cut strip-shaped film 12 into the U-shaped clamping plate 32 and the U-shaped clamping plate 51 respectively in sequence, and rotate the first locking screw 37 and the second locking screw 53 during this process to lock, and the tensile force of the strip-shaped film 12 can be detected, as shown in Figure 8 shown.

[0047] Refer to Figure 2 and Figure 3 As shown in FIGS. and, a hot air blower 9 is fixedly arranged in the middle of the upper side of the cross-shaped crossbeam 21. The air outlet of the hot air blower 9 is fixedly connected with an exhaust duct, and the lower end of the exhaust duct fixedly penetrates through the lower side of the cross-shaped crossbeam 21. The temperature adjustable range of the hot air blower 9 is 25°C to 80°C, which is set through the control panel.

[0048] During specific operation, in order to detect the tensile force of the plastic packaging bag 11 under actual use conditions, during the detection process, hot air can be conveyed into the plastic packaging bag 11 by the hot air blower 9 to simulate a high-temperature environment, increase the surrounding environment temperature, and detect the tensile force of the plastic packaging bag 11 or the strip-shaped film 12 under high-temperature conditions.

[0049] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally 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 arranged on the upper side of the base through a fixed bracket, and a clamping mechanism 1 is arranged at each of the four corners of the multi-stage telescopic frame. A top supporting mechanism that can move up and down is arranged on the multi-stage telescopic frame, and the four clamping mechanisms 1 cooperate with the top supporting mechanism to fix the bag-type plastic product after it is unfolded; The multi-stage telescopic frame comprises a cross-shaped cross beam, each section of the cross-shaped cross beam is fixedly connected to the fixed bracket through a connecting column, each section of the cross-shaped cross beam is provided with a slide rail at the bottom, a slide assembly is provided on the slide rail, and the clamping mechanism 1 is connected to the slide assembly; The supporting mechanism comprises a U-shaped movable frame, wherein two vertical sections of the movable frame are respectively slidably connected to corresponding sections of the cross-shaped cross beam, a cross plate is commonly arranged between opposite sides of the two vertical sections of the movable frame, and a supporting plate is movably connected to the lower sides of the two vertical sections of the movable frame, and an adjusting component capable of adjusting the size of the supporting surface when the supporting plate acts on the inside of the bag-type plastic product is commonly arranged between the two supporting plates and the cross plate; 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.

2. A device for detecting the strength of plastic packaging products after molding according to claim 1, characterized in that: An electric telescopic rod is fixedly arranged on the fixed bracket, the telescopic end of the electric telescopic rod passes through the fixed bracket and is fixedly connected with a pressure sensor, and the pressure sensor is fixedly connected to the upper side of the horizontal section of the movable frame.

3. 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 cross beam, and the four sections of the slide grooves are interconnected. The cross section of the slide groove is in an inverted trapezoidal shape, and the slide rail is in 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 cross beam, and the lower end of the locking bolt movably extends into the slide groove and contacts the upper side of the corresponding slide rail.

4. 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 slide assembly includes an adjusting screw rod rotatably arranged in the second slide groove and rotatably arranged along the length direction thereof, a slider is threadedly connected to the adjusting screw rod, and the slider is connected to a clamping mechanism 1.

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

6. A device for testing the strength of plastic packaging products after molding according to claim 4, characterized in that: The U-shaped clamping plate is fixedly connected to the lower side of the sliding plate, and a clamping plate is movably arranged between the two vertical sections of the U-shaped clamping plate, and two sliding posts are fixedly connected to one side of the clamping plate, 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. A clamping spring is sleeved on the surface of the sliding post between the clamping plate and the vertical section of the U-shaped clamping plate, and a locking screw is threadedly connected to the side wall of the vertical section of the U-shaped clamping plate close to the connecting plate. One end of the locking screw extends into the interior of the U-shaped clamping plate and is rotatably connected to a clamping block, and the other end of the locking screw movably passes through the connecting plate and is fixedly connected to a rotating knob.

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

8. A device for testing the strength of plastic packaging products after molding according to claim 1, characterized in that: The adjustment component 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 an adjusting screw rod 2, the lower side of the adjusting screw rod 2 is fixedly connected to a connecting block, and the sides of the two top support plates close to each other are rotatably connected to the connecting blocks respectively.

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

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

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