A packaging box balance test device and method made of degradable material

Abstract

The present invention relates to the field of balance testing technology, and specifically to a packaging box balance testing device and method made of degradable materials, comprising a base plate and a movable pillar arranged above the base plate, wherein a clamping mold is detachably arranged on the movable pillar, and an electromagnetic telescope is arranged at the lower part of the clamping mold. When the electromagnetic telescope is extended, the packaging box can be blocked and limited to prevent the packaging box from moving downward. A drop test material plate is arranged on the upper surface of the base plate directly below the clamping mold. The packaging box balance testing device of the present invention can perform a balance test on a packaging box made of injection molding of degradable materials. By detecting the balance of weight, the uniformity of the density distribution of the packaging box after injection molding can be detected, thereby eliminating products with excessively large differences in density distribution and improving product quality stability.

Description

Technical Field

[0001] The present invention relates to the technical field of balance testing, and in particular to a packaging box balance testing device made of degradable material and a method thereof. Background Art

[0002] In line with environmental protection requirements, more and more outer packaging uses degradable materials, so some packaging boxes used for outer packaging have begun to be made of starch-based plastics. The production principle of starch plastics is to make starch molecules decompose and disorder, forming starch resins with thermoplastic properties, so it is also called thermoplastic starch plastics, and its molding and processing can still use traditional plastic processing equipment. However, due to the poor performance of degradable materials, which is lower than that of traditional plastics, it is difficult to accurately control the density distribution of products during the processing and production process, and quality inspection is required. Under the existing technology, workers usually conduct simple visual inspections, which makes it difficult to further detect product density distribution problems, and the quality control of products is not strict enough. Summary of the invention

[0003] The object of the present invention is to provide a packaging box balance test device and method made of degradable materials to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a packaging box balance test device made of degradable materials, comprising a base plate and a movable pillar arranged above the base plate, the movable pillar is detachably provided with a clamping mold, the lower part of the clamping mold is provided with an electromagnetic telescope, when the electromagnetic telescope is extended, it can block and limit the packaging box to prevent the packaging box from moving downward, the upper surface of the base plate is provided with a drop test material plate directly below the clamping mold, and the upper part of the drop test material plate is provided with a balance test plate; in the balance test state, the upper surface of the balance test plate is at the same horizontal height as the upper surface of the extended part of the electromagnetic telescope, a balance support shaft is fixedly provided in the middle position of the balance test plate, a functional bracket is provided at the end of the balance support shaft, a support vertical plate is fixedly provided on the upper surface of the base plate, the support vertical plate is used to support the functional bracket, and a balance positioning mechanism with an adjustable trigger threshold is provided on the outside of the balance support shaft.

[0005] The balancing positioning mechanism includes a toggle piece, a toggle groove, a limit pin groove and a cylindrical pin shaft. The toggle piece is fixed on the outer surface of the balancing support shaft. The functional bracket is provided with a toggle groove, and the toggle piece is inserted through the toggle groove. The surface of the toggle piece is provided with a limit pin groove. A cylindrical pin shaft is arranged in the limit pin groove, and a center slider is fixedly arranged at one end of the cylindrical pin shaft.

[0006] A slider shaft is inserted in the central slider, and shaft end plates are fixedly provided at both ends of the slider shaft, and the shaft end plates are fixedly installed with the functional bracket. A symmetrical spring is sleeved on the outside of the slider shaft, and there are two groups of symmetrical springs, which are symmetrically arranged on both sides of the central slider. A top cover plate is fixedly provided on the upper surface of the central slider, and side wing guide plates are fixed on both sides of the top cover plate, and a limited circular groove is provided on the upper surface of the top cover plate.

[0007] A ball is arranged in the limiting circular groove, and a rotating support is arranged outside the ball. The rotating support is used to support and position the ball and enable the ball to rotate. A positioning vertical axis is interspersed in the rotating support for limiting positioning, and an arch frame is fixedly arranged on the upper end of the positioning vertical axis. The arch frame is fixedly installed with the functional bracket.

[0008] An adjusting pressure plate is arranged above the rotating support, and the positioning vertical axis limit is inserted through the adjusting pressure plate. A pressure spring is arranged between the adjusting pressure plate and the rotating support, and an extrusion bolt is spirally arranged in the arch frame, and the lower end of the extrusion bolt is pressed against the adjusting pressure plate to apply a downward extrusion thrust to the adjusting pressure plate. A scale is fixedly arranged on the arch frame, and an indicating arrow is fixedly arranged on the adjusting pressure plate. The indicating arrow cooperates with the scale to display the downward position of the adjusting pressure plate relative to the arch frame.

[0009] The functional bracket is provided with a docking air cavity, the balancing support shaft is airtightly rotatably arranged in the docking air cavity, the docking air cavity is connected with the balancing test plate through the balancing support shaft, and a negative pressure air nozzle is provided outside the docking air cavity.

[0010] A cylindrical inner cavity is provided in the functional bracket, one end of the cylindrical inner cavity is connected to a negative pressure passage, the cylindrical inner cavity is connected to the docking air cavity through the negative pressure passage, a piston body is airtightly and slidably provided inside the cylindrical inner cavity, a tension spring is connected to the side of the piston body away from the negative pressure passage, and one end of the cylindrical inner cavity away from the negative pressure passage is connected to a one-way air inlet valve with a gas filtering function.

[0011] A positive pressure passage connected to the cylindrical inner cavity is provided in the functional bracket, a one-way air outlet valve is arranged in the positive pressure passage, an annular cavity is provided in the central slider, a docking bottom hole is provided through the bottom of the annular cavity, when the balance test plate is in a horizontal state, the docking bottom hole is docked and connected with the positive pressure passage, and beam gas ring grooves are provided through the two sides of the annular cavity.

[0012] A lifting module is fixedly arranged on the base plate, a power machine compartment is arranged on the lifting module, and the power machine compartment is lifted and lowered by the lifting module. A track optical axis and a bidirectional screw rod are arranged between two groups of the power machine compartments, and the track optical axis and the bidirectional screw rod are both inserted through the movable pillar. The surface of the balance test plate is provided with adsorption holes connected with the inner cavity of the balance test plate.

[0013] A testing method for a packaging box balance testing device made of a degradable material, the method comprising the following steps:

[0014] Step 1: Rotate the extrusion bolt and set the trigger threshold according to product requirements;

[0015] Step 2: Place the package box to be tested between two sets of symmetrical clamping molds, control the clamping molds to close, and position the package box. At this time, the balance test board is located in the middle of the bottom of the package box;

[0016] Step 3: Clamp the mold and separate it. When the packaging box is balanced and distributed properly, the packaging box remains level.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The packaging box balance test equipment of the present invention can perform a balance test on packaging boxes made of injection molding of degradable materials. By detecting the balance of weight, the uniformity of density distribution of the packaging box after injection molding can be detected, thereby eliminating products with excessive density distribution differences and improving product quality stability. Since the strength of degradable plastics is usually lower than that of traditional plastics, it is necessary to conduct random inspections on the strength of the packaging boxes. The present invention integrates a drop test function, which can perform a secondary drop test on products with qualified density distribution while performing a balance test, thereby improving the integration of the equipment and increasing economic benefits.

[0019] The present invention cooperates with structures such as the top cover plate, balls and pressure springs, and can change the horizontal driving force required for the balls to break away from the limiting circular grooves by changing the contact pressure between the balls and the limiting circular grooves, thereby adjusting the threshold value for the deflection of the balance test plate. This makes it possible to adjust the allowable error range of the density distribution according to product quality requirements and improve the adaptability of the equipment.

[0020] By cooperating with the cylindrical inner cavity, piston body, beam gas ring groove and other structures, the surface of the slider shaft can be actively cleaned and the adhesion can be blown off according to the pressure changes in the docking air cavity, thereby improving the smoothness of the sliding cooperation between the center slider and the slider shaft and reducing the probability of equipment jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of placing the packaging box of the present invention.

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle.

[0024] Figure 4 for Figure 3 Enlarged schematic diagram of area B in the middle.

[0025] Figure 5 It is a schematic diagram of the overall structure of the present invention from another angle.

[0026] Figure 6 for Figure 5 Enlarged schematic diagram of area C in the middle.

[0027] Figure 7 It is a three-dimensional half-section schematic diagram of the balance support shaft of the present invention.

[0028] Figure 8 for Figure 7 Enlarged schematic diagram of area D in the middle.

[0029] Fig. 9 for Figure 8 Enlarged schematic diagram of area E in the middle.

[0030] Fig.10 It is a three-dimensional half-section schematic diagram of the central sliding block of the present invention.

[0031] Fig.11 for Fig.10 Enlarged schematic diagram of the F area in the middle.

[0032] Fig.12 for Fig.11 Enlarged schematic diagram of the G area in the middle.

[0033] In the figure: 1, base plate; 2, moving pillar; 3, clamping mold; 4, electromagnetic expansion device; 5, drop test material plate; 6, balance test plate; 7, balance support shaft; 8, functional bracket; 9, support vertical plate; 701, toggle member; 702, toggle groove; 703, limit pin groove; 704, cylindrical pin shaft; 705, center slider; 706, slider plug shaft; 707, plug shaft end plate; 708, symmetrical spring; 709, top cover plate; 710, side wing guide plate; 711, limit circular groove; 712, ball bearing; 713, rotating support; 714, positioning vertical axis; 715, arch Frame; 716, adjusting pressure plate; 717, pressure spring; 718, extrusion bolt; 719, scale; 720, indication arrow; 811, docking air cavity; 812, negative pressure air nozzle; 801, cylindrical inner cavity; 802, negative pressure passage; 803, piston body; 804, tension spring; 805, one-way air inlet valve; 806, positive pressure passage; 807, one-way air outlet valve; 808, annular cavity; 809, docking bottom hole; 810, beam gas ring groove; 101, lifting module; 102, power machine compartment; 103, track optical axis; 104, bidirectional screw; 601, adsorption hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a technical solution: a packaging box balance test device made of degradable materials, such as Figure 2 As shown in, it includes a base plate 1 and a movable support 2 arranged above the base plate 1, a clamping mold 3 is detachably arranged on the movable support 2, and an electromagnetic telescope 4 is arranged at the lower part of the clamping mold 3. When the electromagnetic telescope 4 is extended, it can block and limit the packaging box to prevent the packaging box from moving downward. A drop test material plate 5 is arranged on the upper surface of the base plate 1 just below the clamping mold 3, and a balance test plate 6 is arranged above the drop test material plate 5; in the balance test state, the upper surface of the balance test plate 6 is at the same horizontal height as the upper surface of the extended part of the electromagnetic telescope 4, as shown in FIG. Figure 5 As shown in , a balancing support shaft 7 is fixedly provided in the middle position of the balancing test board 6, a functional bracket 8 is provided at the end of the balancing support shaft 7, and a supporting vertical plate 9 is fixedly provided on the upper surface of the base plate 1, and the supporting vertical plate 9 is used to support the functional bracket 8, as shown in Figure 3As shown in the figure, the functional bracket 8 is located in the supporting vertical plate 9, a worm gear transmission structure is arranged on the supporting vertical plate 9, and is driven by a motor, rotating shafts are fixed on both sides of the functional bracket 8, and the rotating shafts and the worm gears are fixedly installed, so that the worm gear structure on the supporting vertical plate 9 can drive the functional bracket 8 to rotate, and the reverse self-locking principle of the worm gear transmission is utilized to realize the positioning of the functional bracket 8 at any position, and a balancing positioning mechanism with an adjustable trigger threshold is arranged on the outside of the balancing support shaft 7.

[0036] like Figure 4 As shown in the figure, the balancing positioning mechanism includes a toggle member 701, a toggle groove 702, a limit pin groove 703 and a cylindrical pin shaft 704. The toggle member 701 is fixed on the outer surface of the balancing support shaft 7. The toggle groove 702 is penetrated on the functional bracket 8. The toggle member 701 passes through the toggle groove 702. The limit pin groove 703 is penetrated on the surface of the toggle member 701. The limit pin groove 703 is provided with a cylindrical pin shaft 704, and a center slider 705 is fixedly provided at one end of the cylindrical pin shaft 704.

[0037] A slider plug shaft 706 is inserted in the center slider 705, and plug shaft end plates 707 are fixedly arranged at both ends of the slider plug shaft 706, and the plug shaft end plates 707 are fixedly installed with the functional bracket 8. The outer sleeve of the slider plug shaft 706 is provided with symmetrical springs 708. There are two groups of symmetrical springs 708, which are symmetrically arranged on both sides of the center slider 705. A top cover plate 709 is fixedly arranged on the upper surface of the center slider 705, and side wing guide plates 710 are fixedly arranged on both sides of the top cover plate 709. Fig. 9 As shown in , the upper surface of the top cover plate 709 is provided with a limited circular groove 711. A ball 712 is arranged in the limited circular groove 711, and a rotating support 713 is arranged outside the ball 712. The rotating support 713 is used to support and position the ball 712 and enable the ball 712 to rotate. A positioning vertical shaft 714 is interspersed in the rotating support 713, and an arch frame 715 is fixedly arranged on the upper end of the positioning vertical shaft 714. The arch frame 715 is fixedly installed with the functional bracket 8.

[0038] An adjusting plate 716 is provided above the rotating support 713, and the positioning vertical axis 714 is limitedly inserted through the adjusting plate 716. A pressure spring 717 is provided between the adjusting plate 716 and the rotating support 713. An extrusion bolt 718 is spirally provided in the arch frame 715, and the lower end of the extrusion bolt 718 is pressed against the adjusting plate 716 to apply a downward extrusion thrust to the adjusting plate 716. A scale 719 is fixedly provided on the arch frame 715, and an indicating arrow 720 is fixedly provided on the adjusting plate 716. The indicating arrow 720 cooperates with the scale 719 to display the downward position of the adjusting plate 716 relative to the arch frame 715.

[0039] like Figure 8As shown in the figure, a docking air cavity 811 is provided in the functional bracket 8, and the balancing support shaft 7 is airtightly rotatably arranged in the docking air cavity 811. The docking air cavity 811 is connected with the balancing test board 6 through the balancing support shaft 7, and a negative pressure air nozzle 812 is provided on the outside of the docking air cavity 811.

[0040] A cylindrical inner cavity 801 is opened in the functional bracket 8, one end of the cylindrical inner cavity 801 is connected to a negative pressure passage 802, the cylindrical inner cavity 801 is connected to the docking air cavity 811 through the negative pressure passage 802, a piston body 803 is airtightly and slidably arranged inside the cylindrical inner cavity 801, a tension spring 804 is connected to the side of the piston body 803 away from the negative pressure passage 802, and the end of the cylindrical inner cavity 801 away from the negative pressure passage 802 is connected to a one-way air inlet valve 805 with a gas filtering function.

[0041] A positive pressure passage 806 connected to the cylindrical inner cavity 801 is provided in the functional bracket 8, a one-way air outlet valve 807 is arranged in the positive pressure passage 806, an annular cavity 808 is provided in the central slider 705, a docking bottom hole 809 is provided through the bottom of the annular cavity 808, when the balance test plate 6 is in a horizontal state, the docking bottom hole 809 is docked and connected with the positive pressure passage 806, and beam gas ring grooves 810 are respectively provided through the two sides of the annular cavity 808.

[0042] like Figure 5 As shown in the figure, a lifting module 101 is fixedly arranged on the base plate 1, and a power machine compartment 102 is arranged on the lifting module 101. The power machine compartment 102 is lifted and lowered by the lifting module 101. A track optical axis 103 and a bidirectional screw rod 104 are arranged between the two groups of power machine compartments 102. The track optical axis 103 and the bidirectional screw rod 104 are both inserted through the movable pillar 2. A motor for driving the bidirectional screw rod 104 to rotate is arranged in the power machine compartment 102. The surface of the bidirectional screw rod 104 is symmetrically provided with two groups of threads, and the spiral directions of the two groups of threads are opposite, so that the bidirectional screw rod 104 can control the movable pillar 2 to move in the opposite direction when rotating. The surface of the balance test plate 6 is provided with an adsorption hole 601 connected with the inner cavity of the balance test plate 6.

[0043] A testing method for a packaging box balance testing device made of a degradable material, the method comprising the following steps:

[0044] Step 1: Rotate the extrusion bolt 718 and set the trigger threshold according to product requirements;

[0045] Step 2: Place the package box to be tested between two sets of symmetrical clamping molds 3, control the clamping molds 3 to close, and position the package box. At this time, the balance test plate 6 is located in the middle of the bottom of the package box;

[0046] Step 3: The clamping mold 3 is separated, and when the packaging box is balanced and distributed as required, the packaging box remains horizontal.

[0047] When the present invention is used, the negative pressure air nozzle 812 is connected to an external controllable negative pressure air source. First, the distance between the two sets of clamping molds 3 is made slightly larger than the width of the packaging box, so that the packaging box can be easily placed between the two sets of clamping molds 3, and at the same time, the extended part of the electromagnetic retractor 4 can be blocked and limited to avoid compression of the balance test plate 6.

[0048] Then the power machine compartment 102 drives the bidirectional screw 104 to rotate, so that the two groups of movable pillars 2 move toward each other synchronously, driving the two groups of clamping molds 3 to clamp each other and position the packaging box. At the same time, the negative pressure air nozzle 812 is connected to the negative pressure air source, such as Figure 7 and Figure 8 As shown in , the adsorption holes 601 on the balance test board 6 are air-absorbed through the balance support shaft 7, so that the balance test board 6 is adsorbed and fixed to the bottom of the packaging box.

[0049] At this time, the power compartment 102 drives the bidirectional screw 104 to rotate in the opposite direction, and the two sets of movable pillars 2 separate in the opposite direction, driving the two sets of clamping molds 3 to separate synchronously, and releasing the positioning of the packaging box; when the density distribution error of the packaging box is less than the set threshold, the balance test plate 6 remains horizontal and the product is qualified. When the density distribution error of the packaging box is greater than the set threshold, there is a certain deviation in the pressure on both sides of the balance test plate 6, causing the balance test plate 6 to rotate, driving the balance support shaft 7 to rotate, such as Figure 4 As shown in FIG, the toggle member 701 toggles the cylindrical pin 704 to move laterally, causing the central slider 705 to move laterally, thereby compressing the symmetrical spring 708 on the corresponding side. Fig. 9 As shown in , the ball 712 will roll out of the limiting circular groove 711, causing the rotating support 713 to move upward, further compressing the pressure spring 717; at this time, the greater the downward pressure applied by the pressure spring 717 to the ball 712, the greater the lateral thrust required for the ball 712 to roll out of the limiting circular groove 711, making the error threshold for triggering the rotation of the balance test plate 6 higher. Therefore, by rotating the extrusion bolt 718 and changing the initial compression degree of the pressure spring 717, the downward pressure applied by the pressure spring 717 to the ball 712 is changed, so that the trigger threshold for the rotation of the balance test plate 6 can be adjusted during the balance detection process.

[0050] After the packaging box passes the balance test, when a drop test is required, first control the clamping mold 3 to re-clamp and position; then replace the appropriate drop test material plate 5, which can be a cement board, a metal plate, a tile, etc., to simulate different ground conditions. Through the worm gear transmission structure, drive the functional bracket 8 to rotate, so that the balance support shaft 7 rotates downward 90 degrees and is perpendicular to the ground. Figure 5As shown in the figure, the lifting module 101 drives the power cabin 102 to lift and lower to change the height of the clamping mold 3 and the packaging box clamped inside. The electromagnetic telescope 4 controls the retraction of the protruding part to release the bottom block of the packaging box by the clamping mold 3. At this time, the packaging box slides downward to break away from the clamping mold 3, and then falls on the drop test material plate 5. The state of the packaging box is checked, thereby completing the drop sampling inspection.

[0051] In the process of connecting the negative pressure air nozzle 812 to the external negative pressure, the piston body 803 is attracted to move axially through the connection of the negative pressure passage 802. At this time, the tension spring 804 is in a stretched and force-storing state, and the space on one side where the tension spring 804 is located filters and absorbs external air through the one-way air intake valve 805.

[0052] After controlling the negative pressure connection of the negative pressure nozzle 812 to be disconnected, the packaging box is removed from the adsorption hole 601 on the surface of the balance test board 6. At this time, the negative pressure inside the docking air cavity 811 disappears, and the central slider 705 returns to the middle position under the elastic force of the symmetrical spring 708, so that the end opening of the positive pressure passage 806 and the docking bottom hole 809 are connected up and down. The piston body 803 loses the negative pressure attraction, and under the reset tension of the tension spring 804, the piston body 803 is driven to move in the opposite direction. At this time, the space on the side where the tension spring 804 is located is in a positive pressure state, and the positive pressure gas enters the annular cavity 808 through the one-way gas outlet valve 807, the positive pressure passage 806 and the docking bottom hole 809, and is ejected through the beam gas ring grooves 810 on both sides, actively cleaning the surface of the slider plug shaft 706 and blowing off the adhesion, thereby improving the smoothness of the central slider 705 and the slider plug shaft 706 when sliding.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging box balance test device made of a degradable material, comprising a base plate (1) and a movable support (2) arranged above the base plate (1), characterized in that: The movable support (2) is detachably provided with a clamping mold (3), and an electromagnetic telescopic device (4) is provided at the bottom of the clamping mold (3). When the electromagnetic telescopic device (4) is extended, it can block and limit the packaging box to prevent the packaging box from moving downward. The upper surface of the base plate (1) is provided with a drop test material plate (5) directly below the clamping mold (3), and a balance test plate (6) is provided above the drop test material plate (5); in a balance test state, the upper surface of the balance test plate (6) and the upper surface of the extended part of the electromagnetic telescopic device (4) are at the same horizontal height, and a balance support shaft (7) is fixedly provided in the middle position of the balance test plate (6), and the balance support shaft (7) ) is provided with a functional bracket (8), a supporting upright plate (9) is fixedly provided on the upper surface of the base plate (1), and the supporting upright plate (9) is used to support the functional bracket (8), and a balancing positioning mechanism with an adjustable trigger threshold is provided on the outside of the balancing support shaft (7); the balancing positioning mechanism comprises a toggle member (701), a toggle groove (702), a limit pin groove (703) and a cylindrical pin shaft (704), the toggle member (701) is fixed to the outer surface of the balancing support shaft (7), the toggle groove (702) is penetrated through the functional bracket (8), the toggle member (701) is inserted through the toggle groove (702), and the surface of the toggle member (701) is penetrated through the limit pin groove (703). A pin groove (703), a cylindrical pin shaft (704) is arranged in the limit pin groove (703), and a center slider (705) is fixedly arranged at one end of the cylindrical pin shaft (704); a slider plug shaft (706) is inserted into the center slider (705), and plug shaft end plates (707) are respectively fixedly arranged at both ends of the slider plug shaft (706), and the plug shaft end plates (707) are fixedly installed with the functional bracket (8); the outer sleeve of the slider plug shaft (706) is provided with symmetrical springs (708), and the number of the symmetrical springs (708) is two groups, which are symmetrically arranged on both sides of the center slider (705); and a top cover is fixedly arranged on the upper surface of the center slider (705). The top cover plate (709) is provided with side wing guide plates (710) on both sides thereof, and a limited circular groove (711) is provided on the upper surface of the top cover plate (709); a ball (712) is provided in the limited circular groove (711), and a rotating support (713) is provided outside the ball (712); the rotating support (713) is used to support and position the ball (712) and enable the ball (712) to rotate; a positioning vertical shaft (714) is provided in the rotating support (713) in a limited manner, and an arch frame (715) is fixedly provided on the upper end of the positioning vertical shaft (714); the arch frame (715) is fixedly installed with the functional bracket (8);An adjusting pressure plate (716) is arranged above the rotating support (713), the positioning vertical axis (714) is limitedly inserted through the adjusting pressure plate (716), a pressure spring (717) is arranged between the adjusting pressure plate (716) and the rotating support (713), a squeezing bolt (718) is spirally arranged in the arch frame (715), the lower end of the squeezing bolt (718) presses on the adjusting pressure plate (716), and applies a downward squeezing thrust to the adjusting pressure plate (716), a scale (719) is fixedly arranged on the arch frame (715), and an indicating arrow (720) is fixedly arranged on the adjusting pressure plate (716), and the indicating arrow (720) cooperates with the scale (719) to display the downward position of the adjusting pressure plate (716) relative to the arch frame (715). ; 2. The packaging box balance test equipment made of degradable materials according to claim 1, characterized in that: A docking air cavity (811) is provided in the functional support (8), the balancing support shaft (7) is airtightly rotatably arranged in the docking air cavity (811), the docking air cavity (811) is connected to the balancing test plate (6) via the balancing support shaft (7), and a negative pressure air nozzle (812) is provided outside the docking air cavity (811).

3. The packaging box balance test equipment made of degradable materials according to claim 2, characterized in that: A cylindrical inner cavity (801) is provided in the functional bracket (8), one end of the cylindrical inner cavity (801) is connected to a negative pressure passage (802), the cylindrical inner cavity (801) is connected to a docking air cavity (811) via the negative pressure passage (802), a piston body (803) is airtightly slidably provided inside the cylindrical inner cavity (801), a tension spring (804) is connected to a side of the piston body (803) away from the negative pressure passage (802), and a one-way air inlet valve (805) having a gas filtering function is connected to one end of the cylindrical inner cavity (801) away from the negative pressure passage (802).

4. The packaging box balance test equipment made of degradable materials according to claim 3, characterized in that: The functional support (8) is provided with a positive pressure passage (806) in communication with the cylindrical inner cavity (801), a one-way air outlet valve (807) is provided in the positive pressure passage (806), an annular cavity (808) is provided in the central slider (705), a docking bottom hole (809) is provided through the bottom of the annular cavity (808), when the balance test plate (6) is in a horizontal state, the docking bottom hole (809) is docked and communicated with the positive pressure passage (806), and beam gas ring grooves (810) are provided through the two sides of the annular cavity (808).

5. The packaging box balance test equipment made of degradable materials according to claim 1, characterized in that: A lifting module (101) is fixedly arranged on the base plate (1), a power machine compartment (102) is arranged on the lifting module (101), and the power machine compartment (102) is lifted and lowered by the lifting module (101). A track optical axis (103) and a bidirectional screw rod (104) are arranged between two groups of the power machine compartments (102), and the track optical axis (103) and the bidirectional screw rod (104) are both inserted through the movable support (2). The surface of the balance test plate (6) is provided with an adsorption hole (601) that is connected to the inner cavity of the balance test plate (6).

6. A test method for a packaging box balance test device made of a degradable material according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: Step 1: Rotate the extrusion bolt (718) and set the trigger threshold according to product requirements; Step 2: placing the packaging box to be tested between two sets of symmetrical clamping molds (3), controlling the clamping molds (3) to close, and positioning the packaging box, at which time the balance test plate (6) is located in the middle of the bottom of the packaging box; Step 3: The clamping mold (3) is separated, and when the packaging box is balanced and distributed properly, the packaging box remains horizontal.

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