Tensile resistance testing machine for simulating human hand to tear easy-to-tear carton

Abstract

The utility model relates to the technical field of tensile resistance testing machines, in particular to a tensile resistance testing machine for simulating a human hand to tear an easy-to-tear carton. Comprising a machine table, a fixing assembly arranged on the table top of the machine table and used for fixing a carton easy to tear, an oblique movement driving mechanism obliquely arranged on the machine table and located above the fixing assembly, a force sensor arranged at the moving end of the oblique movement driving mechanism and a tearing clamp arranged at the input end of the force sensor, and a tearing groove is formed in the top face of the fixing assembly; when the fixing assembly fixes the easy-to-tear carton, the easy-to-tear strip of the easy-to-tear carton is exposed in the tearing groove. According to the utility model, a tensile resistance test can be carried out on the easy-to-tear carton by simulating a mode that an easy-to-tear strip of the easy-to-tear carton is torn by a human hand, and the accuracy of the resistance test on the easy-to-tear carton is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tensile testing machine technical field especially is a kind of tensile testing machine for simulating hand tearing easy-to-tear carton. BACKGROUND

[0002] Easy-to-tear carton is a kind of carton designed for easy opening. Easy-to-tear carton has pre-cut easy-to-tear strips, which can be opened by gently tearing the easy-to-tear strips without tools, and is widely used in food packaging, express packaging, e-commerce packaging and other scenarios. Because the tearing force required by easy-to-tear carton varies in different scenarios, the tearing force of the easy-to-tear strips of the easy-to-tear carton is an important parameter index of the easy-to-tear carton. In the prior art, the applicant applied for a Chinese patent document with application number 202021865919.4 on August 31, 2020, which discloses a high-speed peeling force testing machine, comprising a housing, a driving mechanism arranged in the housing, a stop block arranged in the driving mechanism, a test seat slidingly arranged in the housing, the driving mechanism drives the stop block to make a closed-loop motion, the closed-loop motion includes a straight-line test path, the test seat movably has a movable block, and the test seat moves the movable block when it slides along the housing. The area passed through is called an idle path, and the movable block can be movably extended to the straight-line test path or retracted to the idle path; when the movable block is extended to the straight-line test path, the movable block is in abutment with the stop block. The patent document can test the peeling force of the adhesive tape. Since the clamping device is fixed during the peeling force test, the peeling of the adhesive tape is achieved by moving the adhesive tape, and when tearing the easy-to-tear strips of the easy-to-tear carton, the carton is fixed and the easy-to-tear strips are torn by hand. Therefore, not only can the tensile strength of the easy-to-tear strips of the easy-to-tear carton not be tested, but also the hand tearing of the easy-to-tear carton cannot be simulated.

[0003] Therefore, the defect is obvious, and a solution is urgently needed. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a tensile testing machine for simulating hand tearing of easy-to-tear carton.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tensile testing machine for simulating hand tearing of easy-to-tear carton, comprising a machine table, a fixing assembly arranged on the top surface of the machine table and used for fixing the easy-to-tear carton, an inclined movement driving mechanism obliquely arranged on the machine table and located above the fixing assembly, a force sensor arranged on the movement end of the inclined movement driving mechanism, and a tearing clamp arranged on the input end of the force sensor. The top surface of the fixing assembly is provided with a tearing groove; when the fixing assembly fixes the easy-to-tear carton, the easy-to-tear strips of the easy-to-tear carton are exposed in the tearing groove.

[0007] Further, one end of the fixing assembly is rotatably connected to the machine table via a rotating shaft, the rotating shaft is arranged close to the bottom end of the oblique moving driving mechanism, and an angle adjusting mechanism is arranged between the other end of the fixing assembly and the machine table.

[0008] Further, the angle adjusting mechanism comprises an arc-shaped plate arranged on the end of the fixing assembly, a plurality of clamping shafts arranged along the arc line of the arc-shaped plate, and a clamping piece detachably connected to the machine table, the clamping piece is used for clamping one of the clamping shafts.

[0009] Further, one end of the clamping piece is provided with a clamping groove, and the clamping shaft is clamped in the clamping groove; the other end of the clamping piece is provided with a threaded hole, and a locking bolt is detachably connected to the threaded hole, the machine table is provided with a translation slot, and the threaded hole is threadedly connected after the threaded rod of the locking bolt penetrates through the translation slot.

[0010] Further, the machine table is provided with a containing space for containing the arc-shaped plate.

[0011] Further, the fixing assembly comprises a bottom plate and two locking plates arranged in parallel, one end of the bottom plate is rotatably connected to the machine table via a rotating shaft, and the two locking plates are detachably arranged on the top surface of the bottom plate, a tearing slot is formed between the two locking plates, and the easy-to-tear carton is fixed between the top surface of the bottom plate and the bottom surface of the two locking plates.

[0012] Further, the locking plate is locked on the bottom plate via a locking bolt, the locking plate is provided with an adjusting slot, the threaded rod of the locking bolt is threadedly connected to the bottom plate after penetrating through the adjusting slot, and the adjusting slot is used for adjusting the distance between the two locking plates.

[0013] Further, a telescopic supporting rod is arranged between the middle part of the bottom surface of the fixing assembly and the machine table, one end of the telescopic supporting rod is hingedly connected to the middle part of the bottom surface of the fixing assembly, and the other end of the telescopic supporting rod is hingedly connected to the machine table.

[0014] Further, the force sensor is arranged on the moving end of the oblique moving driving mechanism via a lifting adjusting mechanism, and the lifting adjusting mechanism is used for adjusting the height of the force sensor and the tearing clamp.

[0015] Further, the lifting adjusting mechanism comprises a lifting guide rod arranged on the moving end of the oblique moving driving mechanism, a lifting seat slidably sleeved on the outside of the lifting guide rod, and a locking piece used for locking the lifting seat on the lifting guide rod, and the force sensor is arranged on the lifting seat.

[0016] The utility model discloses an advantageous effect: in practical application, at the beginning, tear clamp is located at the bottom end of oblique shift drive mechanism, and the easy tear carton is fixed on the fixed component, and the easy tear strip of easy tear carton is exposed in tear slot, and tear clamp clamps the free end of easy tear strip, and then oblique shift drive mechanism drive force sensor is driven with tear clamp to move obliquely upward, so that tear clamp obliquely upward tear easy tear strip of easy tear carton, and in the process of tearing easy tear strip, force sensor monitors the tearing force of tearing easy tear strip to test the tensile strength of easy tear carton. The utility model can simulate the mode of human hand tearing easy tear strip of easy tear carton to test the tensile strength of easy tear carton, and improve the accuracy of testing the tensile strength of easy tear carton. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is the section view of the utility model hiding behind first stand, second stand, oblique shift drive mechanism, force sensor, tear clamp and lift adjusting mechanism.

[0019] Figure 3 It is the section view of lift adjusting mechanism, force sensor and tear clamp of the utility model.

[0020] Figure 4 It is Figure 1 The enlarged view of A in the middle.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1, machine table, 2, fixed component, 3, oblique shift drive mechanism, 4, force sensor, 5, tear clamp, 6, tear slot, 7, pivot, 8, angle adjusting mechanism, 9, arc plate, 10, clamping shaft, 11, clamping piece, 12, clamping groove, 13, locking bolt, 15, handle, 17, containing space, 18, bottom plate, 19, locking plate, 20, locking bolt, 21, adjusting groove, 22, telescopic support rod, 23, lift adjusting mechanism, 24, lift guide rod, 25, lift seat, 26, locking piece, 27, height adjusting hole, 29, control box, 30, first stand, 31, second stand. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the utility model is further explained below in combination with examples and drawings, and the content mentioned in the implementation mode is not the limitation of the utility model.

[0024] As Figures 1 to 4As shown, the present invention provides a tensile strength testing machine that simulates the tearing of an easy-tear cardboard box by human hand, including a machine base 1, a fixing component 2 set on the table of the machine base 1 for fixing the easy-tear cardboard box, an inclined shifting drive mechanism 3 installed on the machine base 1 and located above the fixing component 2, a force sensor 4 installed at the moving end of the inclined shifting drive mechanism 3, and a tearing clamp 5 installed at the input end of the force sensor 4. The top surface of the fixing component 2 is provided with a tearing groove 6; when the fixing component 2 fixes the easy-tear cardboard box, the easy-tear strip of the easy-tear cardboard box is exposed in the tearing groove 6.

[0025] In practical applications, initially, the tearing clamp 5 is located at the bottom of the inclined drive mechanism 3, fixing the easy-tear cardboard box to the fixing component 2. The easy-tear strip of the cardboard box is exposed in the tearing groove 6. The tearing clamp 5 clamps the free end of the easy-tear strip. Then, the inclined drive mechanism 3 drives the force sensor 4 to move the tearing clamp 5 upward at an angle, causing the tearing clamp 5 to tear the easy-tear strip of the cardboard box upward at an angle. During the tearing process, the force sensor 4 monitors the tearing force of the easy-tear strip to test the tensile strength of the easy-tear cardboard box. This utility model can simulate the way a person tears the easy-tear strip of the cardboard box to conduct tensile strength testing on the easy-tear cardboard box, improving the accuracy of tensile strength testing on the easy-tear cardboard box.

[0026] In this embodiment, one end of the fixing component 2 is rotatably connected to the machine base 1 via a rotating shaft 7. The rotating shaft 7 is located near the bottom end of the oblique shift drive mechanism 3. An angle adjustment mechanism 8 is provided between the other end of the fixing component 2 and the machine base 1. The angle adjustment mechanism 8 is used to adjust the angle of the fixing component 2.

[0027] In practical applications, the angle of the fixing component 2 relative to the horizontal plane can be adjusted by adjusting the angle adjustment mechanism 8, thereby adjusting the angle of the easy-tear carton, and thus enabling tensile strength testing of the easy-tear carton at different angles, which is highly practical.

[0028] In this embodiment, the angle adjustment mechanism 8 includes an arc-shaped plate 9 mounted on the end of the fixing component 2, a plurality of retaining shafts 10 disposed along the arc of the arc-shaped plate 9, and a retaining member 11 detachably connected to the machine base 1. The retaining member 11 is used to retain one of the retaining shafts 10. In practical applications, the retaining member 11 releases the retaining shaft 10 on the arc-shaped plate 9, applies a lifting force to the fixing component 2 and / or the arc-shaped plate 9, causing the fixing component 2, along with the arc-shaped plate 9, to rotate around the central axis of the rotating shaft 7 by the required angle. Then, the retaining member 11 engages with the retaining shaft 10 at the corresponding angle to fix the fixing component 2 at the required angle. This structural design facilitates the adjustment of the angle of the fixing component 2.

[0029] Specifically, multiple retaining shafts 10 are arranged at equal angles on the arc-shaped plate 9. This structural design facilitates the operator to adjust the angle of the fixing component 2 at equal angles.

[0030] In this embodiment, one end of the clamping piece 11 is provided with a clamping groove 12, and the clamping shaft 10 is clamped in the clamping groove 12; the other end of the clamping piece 11 is provided with a threaded hole, and the locking bolt 13 is detachably connected to the threaded hole; the machine table 1 is provided with a translation slot, and the threaded hole of the locking bolt 13 is threadedly connected after the threaded hole penetrates through the translation slot.

[0031] When it is necessary to adjust the angle of the fixing assembly 2, the locking bolt 13 is loosened, so that the clamping piece 11 can move relative to the machine table 1 along the translation slot until the clamping piece 11 loosens the clamping shaft 10, at which time the angle of the fixing assembly 2 can be adjusted, and after the angle adjustment is completed, the clamping piece 11 is clamped with the corresponding clamping shaft 10, and the locking bolt 13 is tightened again, so that the locking bolt 13 locks the clamping piece 11 on the machine table 1, thereby enabling the clamping piece 11 to firmly clamp the clamping shaft 10.

[0032] Specifically, the machine table 1 is provided with a guide cavity, and the guide cavity is in communication with the translation slot; the end of the clamping piece 11 provided with the threaded hole is in sliding connection with the inner wall of the guide cavity. During the movement of the clamping piece 11 relative to the machine table 1, the guide cavity plays a guiding role for the clamping piece 11, thereby improving the stability of the movement of the clamping piece 11.

[0033] Specifically, the top end of the arc-shaped plate 9 is provided with a handle 15; in actual application, the operator can easily adjust the angle of the fixing assembly 2 by holding the handle, and the angle adjustment is easy and convenient.

[0034] Specifically, the side wall of the arc-shaped plate 9 is provided with a plurality of different angle marks, and each angle mark corresponds to a clamping shaft 10. The angle marks are provided for the operator to watch, thereby facilitating the operator to quickly and accurately adjust the fixing assembly 2 to the required angle.

[0035] In this embodiment, the machine table 1 is provided with a containing space 17 for containing the arc-shaped plate 9. The containing space 17 can contain the arc-shaped plate 9, so that the structure of the arc-shaped plate 9 and the machine table 1 is compact, and they will not collide or interfere with each other.

[0036] In this embodiment, the fixing assembly 2 includes a bottom plate 18 and two locking plates 19 arranged in parallel, one end of the bottom plate 18 is rotatably connected to the machine table 1 through the rotating shaft 7, and the two locking plates 19 are detachably arranged on the top surface of the bottom plate 18. The tearing slot 6 is formed between the two locking plates 19, and the easy-to-tear carton is fixed between the top surface of the bottom plate 18 and the bottom surface of the two locking plates 19. This structure design realizes the modular assembly of the fixing assembly 2, which is convenient to disassemble and assemble, and facilitates the fixation of the easy-to-tear carton.

[0037] In the embodiment, the locking plates 19 are locked on the base plate 18 via the locking bolts 20, the locking plates 19 are provided with adjusting grooves 21, the shanks of the locking bolts 20 are screwed with the base plate 18 after penetrating the adjusting grooves 21, and the adjusting grooves 21 are used to adjust the distance between the two locking plates 19. In actual application, according to different specifications of the tearable carton, the size of the tearable strip of the tearable carton is different. By loosening the locking bolts 20, the locking plates 19 can be moved along the adjusting grooves 21 relative to the base plate 18 to adjust the distance between the two locking plates 19, so as to adjust the width of the tearing groove 6. After the adjustment is completed, the locking bolts 20 are tightened again to lock the locking plates 19 on the base plate 18.

[0038] In the embodiment, the telescopic supporting rods 22 are arranged between the middle part of the bottom surface of the fixing assembly 2 and the machine table 1, one end of each telescopic supporting rod 22 is hinged to the middle part of the bottom surface of the fixing assembly 2, and the other end of the telescopic supporting rod 22 is hinged to the machine table 1. Specifically, the telescopic supporting rods 22 can be pneumatic supporting rods. By adding the telescopic supporting rods 22, according to the angle adjustment of the fixing assembly 2, the telescopic supporting rods 22 work in extension and retraction, which can assist in supporting the fixing assembly 2 without hindering the angle adjustment of the fixing assembly 2, so that the angle adjustment of the fixing assembly 2 is more convenient.

[0039] In the embodiment, the force sensor 4 is arranged on the moving end of the oblique moving driving mechanism 3 via the lifting adjusting mechanism 23, and the lifting adjusting mechanism 23 is used to adjust the height of the force sensor 4 and the tearing clamp 5. In actual application, the height of the force sensor 4 and the tearing clamp 5 is adjusted by the lifting adjusting mechanism 23, which improves the flexibility of the tearing clamp 5 and facilitates the clamping of the tearing strip of the tearable carton by the tearing clamp 5.

[0040] In the embodiment, the lifting adjusting mechanism 23 includes a lifting guide rod 24 arranged on the moving end of the oblique moving driving mechanism 3, a lifting seat 25 slidingly sleeved on the outside of the lifting guide rod 24, and a locking member 26 used to lock the lifting seat 25 on the lifting guide rod 24, and the force sensor 4 is arranged on the lifting seat 25.

[0041] In actual application, when the height of the tearing clamp 5 needs to be adjusted, the locking member 26 is loosened, so that the lifting seat 25 can slide up and down relative to the lifting guide rod 24 to adjust the height of the tearing clamp 5. After the adjustment is completed, the locking member 26 locks the lifting seat 25 on the lifting guide rod 24 to maintain the height of the tearing clamp 5.

[0042] Specifically, the locking piece 26 is a bolt, the length direction of the lifting guide rod 24 is provided with a plurality of height adjustment holes 27, the lifting seat 25 is provided with a plug hole communicated with the height adjustment hole 27, and the locking piece 26 is detachably inserted into the plug hole and the corresponding height adjustment hole 27. When the height of the tear-pull clamp 5 is adjusted, the lifting seat 25 is lifted and slid relative to the lifting guide rod 24, when the height is adjusted to the required position, the plug hole of the lifting seat 25 is coaxially communicated with the height adjustment hole 27 at the corresponding height position, and then the bolt is inserted into the plug hole and the height adjustment hole 27, so as to lock the lifting seat 25 and the lifting guide rod 24 together.

[0043] Specifically, the anti-tensile force testing machine simulating the human hand tearing the easy-to-tear carton further comprises a control box 29, and the oblique moving driving mechanism 3 and the force sensor 4 are electrically connected with the control box 29. The control box 29 is used for adjusting the driving speed and driving force and the like parameters of the oblique moving driving mechanism 3, and the tearing force monitored by the force sensor 4 is displayed on the display screen of the control box 29 and saved in the control box 29.

[0044] Specifically, the top surface of the machine table 1 is provided with a first column 30 and a second column 31, the height of the first column 30 is less than the height of the second column 31, the two ends of the oblique moving driving mechanism 3 are respectively arranged on the first column 30 and the second column 31, and the fixing assembly 2 is located between the first column 30 and the second column 31. The structure design facilitates the oblique installation of the oblique moving driving mechanism 3 on the machine table 1. Specifically, the inclination angle of the oblique moving driving mechanism 3 is 15° to 85°.

[0045] All the technical features in the embodiment can be freely combined according to actual needs.

[0046] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A tensile strength testing machine that simulates the tearing of an easy-tear cardboard box by hand, characterized in that: The utility model provides a kind of paper box tearing device, including machine table (1), the fixed component (2) for being used for fixed tearable carton of being arranged in the mesa of machine table (1) and being arranged in the mesa of machine table (1), oblique shift drive mechanism (3) is obliquely installed in machine table (1) and is located in the upper of fixed component (2), force sensor (4) is installed in the moving end of oblique shift drive mechanism (3) and tear clamp (5) is installed in the input end of force sensor (4), the top surface of fixed component (2) is provided with tear slot (6);When fixed component (2) fixed tearable carton, the tearable strip of tearable carton is exposed in tear slot (6).

2. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 1, characterized in that: One end of fixed component (2) is rotatably connected with machine table (1) through pivot (7), pivot (7) is arranged close to the bottom end of oblique shift drive mechanism (3), and angle adjusting mechanism (8) is arranged between the other end of fixed component (2) and machine table (1);Angle adjusting mechanism (8) is used to adjust the angle of fixed component (2).

3. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 2, characterized in that: Angle adjusting mechanism (8) includes arc plate (9) installed on the end of fixed component (2), a plurality of clamping shafts (10) arranged along the arc line of arc plate (9) on arc plate (9) and clamping piece (11) detachably connected with machine table (1), and clamping piece (11) is used to clamp one of clamping shafts (10).

4. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 3, characterized in that: One end of clamping piece (11) is provided with clamping groove (12), and clamping shaft (10) is clamped in clamping groove (12);The other end of clamping piece (11) is provided with screw hole, and lock bolt (13) is detachably connected with screw hole after the threaded rod of lock bolt (13) penetrates through translation slot, and machine table (1) is provided with translation slot.

5. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 3, wherein: Machine table (1) is provided with containing space (17) for containing arc plate (9).

6. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 2, wherein: Fixed component (2) includes bottom plate (18) and two locking plates (19) arranged in parallel, one end of bottom plate (18) is rotatably connected with machine table (1) through pivot (7), two locking plates (19) are detachably installed on the top surface of bottom plate (18), tear slot (6) is formed between two locking plates (19), and tearable carton is fixed between the top surface of bottom plate (18) and the bottom surface of two locking plates (19).

7. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 6, characterized in that: Locking plate (19) is locked on bottom plate (18) through locking bolt (20), locking plate (19) is provided with adjusting groove (21), the threaded rod of locking bolt (20) is threadedly connected with bottom plate (18) after penetrating through adjusting groove (21), and adjusting groove (21) is used to adjust the distance between two locking plates (19).

8. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 2 or 6, characterized in that: The middle part of the bottom surface of fixed component (2) and machine table (1) are provided with telescopic supporting rod (22), one end of telescopic supporting rod (22) is hinged with the middle part of the bottom surface of fixed component (2), and the other end of telescopic supporting rod (22) is hinged with machine table (1).

9. A tensile testing machine simulating a human hand tearing a tearable carton according to claim 1, wherein: Force sensor (4) is installed on the moving end of oblique shift drive mechanism (3) through lifting adjusting mechanism (23), and lifting adjusting mechanism (23) is used to adjust the height of force sensor (4) and tear clamp (5).

10. A tensile resistance testing machine simulating human hand tearing a tearable carton according to claim 9, characterized in that: The lifting adjusting mechanism (23) comprises a lifting guide rod (24) arranged on the moving end of the inclined moving driving mechanism (3), a lifting seat (25) slidably sleeved on the outside of the lifting guide rod (24), and a locking member (26) for locking the lifting seat (25) on the lifting guide rod (24), and the force sensor (4) is arranged on the lifting seat (25).

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