Rapid strength detection equipment for stretching and wrapping film

Abstract

The invention provides rapid strength detection equipment for stretching a wrapping film, and belongs to the technical field of wrapping film production detection equipment, the rapid strength detection equipment comprises a clamping assembly for clamping the wrapping film, and a stretching driving assembly and a stretching transmission assembly which are connected with the clamping assembly and used for stretching and extending the wrapping film; the fixed clamping part and the movable clamping part can relatively rotate around the hinge part to the position where the clamping surfaces of the fixed clamping part and the movable clamping part are attached to each other; the clamping surfaces of the fixed clamping part and the movable clamping part can clamp the wrapping film from the two sides of the wrapping film; the pressure metering unit is used for detecting the tension applied to the wrapping film by the stretching driving assembly through the clamping assembly. According to the rapid strength detection equipment for stretching the wrapping film, the wrapping film is connected with the clamping assembly, the pressure metering unit can detect the tensile force borne by the wrapping film, and the tensile property of the wrapping film can be judged according to the detection value of the pressure metering unit.

Description

Technical Field

[0001] The present invention belongs to the technical field of winding film production and detection equipment, and more particularly relates to a device for quickly detecting the strength of stretched winding film. Background Art

[0002] Winding film is a plastic film with high elasticity and self - adhesiveness, usually made of materials such as linear low - density polyethylene (LLDPE), and is widely used in the logistics, warehousing, and transportation industries for wrapping and fixing goods (such as pallet goods) to prevent scattering, dust, moisture, and improve transportation efficiency.

[0003] Ductility, or stretching performance, is a core performance index of winding film. The purpose of detection is to ensure the stability of the package. The winding film needs to tightly wrap the goods after a certain stretch. Good ductility enables it to adapt to goods of different shapes and sizes without breaking. If the ductility is insufficient, the film is prone to breakage, resulting in the loosening of the goods. Excessive stretching will reduce the puncture strength and resilience of the film, leading to insecure wrapping; insufficient stretching may waste materials or fail to fix the goods.

[0004] However, due to the certain width of the winding film, the force applied by the existing winding film detection equipment to the winding film cannot be evenly distributed in the width direction of the winding film, resulting in uneven stress. Summary of the Invention

[0005] Based on this, an object of the present invention is to provide a device for quickly detecting the strength of stretched winding film, which is used to stretch the winding film to detect its strength; the strength quick - detection device includes a clamping assembly for clamping the winding film, a stretching drive assembly and a stretching transmission assembly connected to the clamping assembly for stretching and extending the winding film; The clamping assembly includes a fixed clamping part and a movable clamping part that are hinged to each other. Clamping surfaces are respectively provided on the fixed clamping part and the movable clamping part. The fixed clamping part and the movable clamping part can rotate relative to the hinge part to a position where the clamping surfaces of the fixed clamping part and the movable clamping part are mutually attached; the clamping surfaces of the fixed clamping part and the movable clamping part can clamp the winding film from both sides of the winding film; The stretching drive assembly and the stretching transmission assembly are connected to the clamping assembly and can drive the clamping assembly to move, thereby stretching and extending the winding film to detect the strength of the winding film; A pressure measuring unit is provided on the clamping assembly, and the pressure measuring unit is used to detect the pulling force applied to the winding film by the stretching drive assembly through the clamping assembly.

[0006] Preferably, the strength quick - detection device further includes a support body, and the support body is used to connect the clamping assembly, the stretching drive assembly, and the stretching transmission assembly; The stretching transmission assembly includes a screw rod connected to the stretching drive assembly and a transmission rod connected to the screw rod. One end of the transmission rod connected to the screw rod is provided with a transmission wheel matching the screw rod, and the transmission rod is provided with an external thread; the stretching transmission assembly further includes a first sliding seat connected to the clamping assembly, and the first sliding seat is provided with an internal thread hole matching the external thread of the transmission rod; the stretching drive assembly can drive the screw rod to rotate, thereby driving the transmission wheel and the transmission rod to rotate, and finally making the first sliding seat and the clamping assembly translate along the length direction of the transmission rod.

[0007] Preferably, the strength rapid detection device includes two sets of clamping assemblies that respectively clamp two positions of the winding film; the strength rapid detection device further includes two sets of stretching transmission assemblies that are respectively connected to the two sets of clamping assemblies; the stretching drive assembly can make the two sets of clamping assemblies move away from each other through the stretching transmission assembly, thereby stretching and extending the winding film.

[0008] Preferably, the strength rapid detection device includes two sets of clamping assemblies that respectively clamp two positions of the winding film; the strength rapid detection device further includes four sets of stretching transmission assemblies. Among the four sets of stretching transmission assemblies, two sets of clamping assemblies are respectively connected to a clamping assembly through a first sliding seat; the other two sets of clamping assemblies are connected to another clamping assembly through a first sliding seat; The two first sliding seats connected to a clamping assembly are arranged at two positions in the length direction of the fixed clamping part. The stretching drive assembly can make the two sets of clamping assemblies move away from each other through the stretching transmission assembly. During the movement, the moving speeds of the two ends in the length direction of the two sets of clamping assemblies are the same.

[0009] Preferably, the strength rapid detection device further includes two sets of stretching drive assemblies. Each set of stretching drive assemblies in the two sets of stretching drive assemblies is connected to two sets of stretching transmission assemblies; the two sets of stretching transmission assemblies connected to the clamping assembly are respectively connected to the two sets of stretching drive assemblies; The first sliding seat is provided with a shaft hole, and the first sliding seat is hinged to the fixed clamping part through the shaft hole; on the fixed clamping part, a sliding track is arranged along the length direction of the clamping assembly; among the two first sliding seats connected to the clamping assembly, one first sliding seat is provided with a track connection part matching the sliding track, and the first sliding seat is slidably connected to the fixed clamping part through the sliding track and the track connection part, and the track connection part can move along the length direction of the clamping assembly; The sliding track is a protruding part arranged on both sides of the bottom of the fixed clamping part, and the track connection part includes a buckle that is clamped with the protruding parts on both sides of the bottom of the fixed clamping part; the stretching drive assembly can make the two sets of clamping assemblies move away from each other through the stretching transmission assembly. During the movement, the moving speeds of the two ends in the length direction of the two sets of clamping assemblies are inconsistent.

[0010] Preferably, the first sliding seat is hinged to the track connecting part through a shaft hole; a protruding shaft hole is provided on the first sliding seat, and a rotating shaft matching the shape and position of the shaft hole is provided on the track connecting part. The first sliding seat and the track connecting part can be hinged through the shaft hole and the rotating shaft.

[0011] Preferably, placing grooves are provided on the clamping surfaces of the fixed clamping part and the movable clamping part, magnetic members are arranged in the placing grooves, and the magnetic poles of the magnetic members of the fixed clamping part and the movable clamping part facing each other are configured as magnetic poles attracting each other. When the fixed clamping part and the movable clamping part are attached, the magnetic members on the fixed clamping part and the movable clamping part adsorb each other, thereby fixing the winding film between the fixed clamping part and the movable clamping part.

[0012] Preferably, a pressure measuring unit connected to the magnetic member is further provided on the clamping assembly, and the pressure measuring unit can detect the tensile force applied by the winding film to the magnetic member; A shielding member is arranged between the magnetic member and the pressure measuring unit, and the shielding member is used to reduce the interference of the magnetic field of the magnetic member on the pressure measuring unit; A limiting member is further provided on the clamping assembly, and the limiting member is used to fix the position of the magnetic member. There is a gap between the limiting member and the magnetic member in the width direction of the clamping assembly.

[0013] Preferably, the fixed clamping part and the movable clamping part are hinged, the hinged part is arranged at one end in the length direction of the clamping assembly, and an eccentric wheel is arranged at the other end in the length direction of the clamping assembly. The eccentric wheel is connected with a handle, and the eccentric wheel can be rotated through the handle, thereby pushing the fixed clamping part and the movable clamping part to separate on the clamping surface and generate a gap.

[0014] Preferably, a plurality of magnetic members are arranged along the length direction of the clamping assembly on the fixed clamping part and the movable clamping part, and some or all of the plurality of magnetic members are respectively connected to the pressure measuring unit.

[0015] According to an embodiment of the present invention, a strength rapid detection device for stretching a winding film can complete the stretching detection of the winding film. The winding film is connected to the clamping assembly, and the stretching driving assembly can drive the clamping assembly to move through the stretching transmission assembly, thereby stretching the winding film. The pressure measuring unit can detect the tensile force received by the winding film, and the stretching performance of the winding film can be judged through the detection value of the pressure measuring unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This disclosure includes the accompanying drawings, which, together with the description, illustrate various exemplary embodiments, features, and aspects of the disclosure and are used to explain the principles of the disclosure. The present invention will be more fully understood through the following detailed description in conjunction with the drawings. Among them: Figure 1 is a schematic diagram of a strength rapid detection device for stretching a winding film according to an embodiment of the present invention; Figure 2 is Figure 1 The partial enlarged view of position A in Figure 3 is Figure 1 The partial enlarged view of position B in Figure 4 is Figure 1 The partial enlarged view of position C in Figure 5 It is a schematic diagram of a clamping assembly of a rapid strength detection device for stretch wrapping film according to an embodiment of the present invention; Figure 6 is Figure 5 The partial enlarged view of position D in Figure 7 is Figure 5 The partial enlarged view of position E in Figure 8 It is a schematic diagram of a puncturing assembly of a rapid strength detection device for stretch wrapping film according to an embodiment of the present invention; Figure 9 is Figure 8 The partial enlarged view of position F in Figure 10 It is a schematic diagram of a stretching drive assembly and a stretching transmission assembly of a rapid strength detection device for stretch wrapping film according to an embodiment of the present invention; Figure 11 It is a schematic diagram of a first sliding seat for stretch wrapping film according to an embodiment of the present invention; Figure 12 is Figure 11 The partial enlarged view of position G in Figure 13 It is an exploded view of the connection relationship among a fixed clamping part, an orbit connection part, and a first sliding seat for stretch wrapping film according to an embodiment of the present invention; Wherein: clamping assembly 11, fixed clamping part 111, movable clamping part 112, stretching drive assembly 12, wrapping film 13, puncturing support frame 21, puncturing driver 22, puncturing device 23, support plate 24, angle limiting block 25, support body 26, transmission rod 31, transmission wheel 32, material rack 33, first sliding seat 34, second sliding seat 35, elastic member 36, winding table 37, winding shaft 38, orbit connection part 41, sliding orbit 42, shaft hole 43, rotating shaft 44, magnetic member 51, shielding member 52, pressure measuring unit 53, limiting member 54, handle 55, cutter track 61, cutter 62, distance measuring device 63. Detailed implementation manners

[0017] The technical solutions of the present invention will be further described in detail below through embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0018] The winding film 13 is a plastic film with high elasticity and self - adhesiveness, usually made of materials such as linear low - density polyethylene (LLDPE), and is widely used in the logistics, warehousing, and transportation industries to wrap and fix goods (such as pallet goods), prevent scattering, dust, and moisture, and improve transportation efficiency.

[0019] Ductility, or stretchability, is a core performance index of the winding film 13. The purpose of detection is to ensure the wrapping stability. The winding film 13 needs to tightly wrap the goods after a certain stretch. Good ductility enables it to adapt to goods of different shapes and sizes without breaking. If the ductility is insufficient, the film is prone to breakage, resulting in the loosening of the goods. Over - stretching will reduce the puncture strength and resilience of the film, resulting in an insecure wrapping; insufficient stretching may waste materials or fail to fix the goods.

[0020] However, due to the winding film 13 having a certain width, the force applied by the existing detection equipment for the winding film 13 cannot be evenly distributed in the width direction of the winding film 13, resulting in uneven stress.

[0021] To solve the above problems, the purpose of the present invention is to provide a rapid strength detection device for stretching a winding film, which is used to stretch the winding film 13 to detect the strength of the winding film 13; the strength rapid detection device includes a clamping component 11 for clamping the winding film 13, a stretching drive component 12 connected to the clamping component 11 for stretching and extending the winding film 13, and a stretching transmission component; The clamping component 11 includes a fixed clamping part 111 and a movable clamping part 112 that are hinged to each other. Clamping surfaces are respectively provided on the fixed clamping part 111 and the movable clamping part. The fixed clamping part 111 and the movable clamping part can rotate relative to the hinge part to a position where the clamping surfaces of the fixed clamping part 111 and the movable clamping part are mutually attached; the clamping surfaces of the fixed clamping part 111 and the movable clamping part can clamp the winding film 13 from both sides of the winding film 13; The stretching drive component 12 and the stretching transmission component are connected to the clamping component 11 and can drive the clamping component 11 to move, thereby stretching and extending the winding film 13 to detect the strength of the winding film 13; A pressure measuring unit 53 is provided on the clamping component 11, and the pressure measuring unit 53 is used to detect the pulling force applied to the winding film 13 by the stretching drive component 12 through the clamping component 11.

[0022] In this embodiment, as Figure 1 、 Figure 5 、 Figure 8As shown, the clamping assembly 11 includes a fixed clamping part 111 and a movable clamping part 112 that are hinged to each other. The fixed clamping part 111 and the movable clamping part 112 are two long strip-shaped components, and the hinge part is arranged at one end in the length direction of the fixed clamping part 111 and the movable clamping part 112. The fixed clamping part 111 and the movable clamping part 112 can be opened and closed around the hinge part. In the open state, the winding film 13 can be placed between the fixed clamping part 111 and the movable clamping part 112. In the closed state, the clamping surfaces of the fixed clamping part 111 and the movable clamping part 112 contact and press the winding film 13 from both sides of the winding film 13 to fix the winding film 13.

[0023] The stretching drive assembly 12 in this embodiment is a motor. The stretching transmission assembly is used to convert the rotational motion of the motor into a translational motion, driving the clamping assembly 11 to translate to stretch the winding film 13. The stretching transmission assembly can be a lead screw and a slide seat that cooperates with the lead screw.

[0024] The pressure measurement unit 53 can be a force sensor or a pressure sensor, which is used to detect the interaction force between the clamping assembly 11 and the winding film 13, and further detect the magnitude of the pulling force applied to the winding film 13 by the stretching drive assembly 12. Furthermore, it can detect whether the winding film 13 is torn at a certain pulling force value and the magnitude of the force that tears the winding film 13.

[0025] A device for quickly detecting the strength of a stretched winding film can complete the stretching detection of the winding film 13. The winding film 13 is connected to the clamping assembly 11. The stretching drive assembly 12 can drive the clamping assembly 11 to move through the stretching transmission assembly, thereby stretching the winding film 13. The pressure measurement unit 53 can detect the pulling force received by the winding film 13, and the stretching performance of the winding film 13 can be judged through the detection value of the pressure measurement unit 53.

[0026] Preferably, as Figure 2 shown, a device for quickly detecting the strength of a stretched winding film further includes a puncturing assembly. The puncturing assembly includes a puncturing support frame 21, a puncturing driver 22 arranged on the puncturing support frame 21, and a puncturing device 23 connected to the puncturing driver 22. The puncturing device 23 can be a component with a sharp head. The puncturing support frame 21 can place the puncturing device 23 on one side of the winding film 13. The puncturing driver 22 can be a linear motor, a cylinder, or other devices that can output linear movement. The puncturing driver 22 can push the puncturing device 23 to puncture the winding film 13. A force sensor is arranged between the puncturing driver 22 and the puncturing device 23, and the force sensor is used to detect the magnitude of the force for puncturing the winding film 13.

[0027] Preferably, as Figure 2 、 Figure 8 、 Figure 9As shown in the figure, a support plate 24 is provided on the support body 26. A puncture hole is provided on the support plate 24. The puncture support frame 21 can install the puncture device 23 above the puncture hole. The support plate 24 is used to support the winding film 13. When the puncture device 23 punctures the winding film 13, the support plate 24 can support the winding film 13 near the puncture device 23 to prevent the winding film 13 from undergoing excessive deformation along the puncture direction during puncture. The connection between the puncture support frame 21 and the support body 26 is a movable connection. The puncture support frame 21 can move the puncture device 23 to an angle that does not block the area above the support plate 24, preventing the puncture driver 22, the puncture device 23, and the puncture support frame 21 from affecting the connection between the winding film 13 and the clamping assembly 11.

[0028] An angle limit block 25 is provided at the connection part between the puncture support frame 21 and the support body 26. The angle limit block 25 is used to align the puncture device 23 with the puncture hole.

[0029] Furthermore, the strength rapid detection device further includes a support body 26, and the support body 26 is used to connect the clamping assembly 11, the stretching drive assembly 12, and the stretching transmission assembly; The stretching transmission assembly includes a screw rod connected to the stretching drive assembly 12 and a transmission rod 31 connected to the screw rod. One end of the transmission rod 31 connected to the screw rod is provided with a transmission wheel 32 matching the screw rod, and an external thread is provided on the transmission rod 31; the stretching transmission assembly further includes a first sliding seat 34 connected to the clamping assembly 11, and an internal thread hole matching the external thread of the transmission rod 31 is provided on the first sliding seat 34; the stretching drive assembly 12 can drive the screw rod to rotate, thereby driving the transmission wheel 32 and the transmission rod 31 to rotate, and finally causing the first sliding seat 34 and the clamping assembly 11 to translate along the length direction of the transmission rod 31.

[0030] In this embodiment, as Figure 1 、 Figure 5 、 Figure 10 、 Figure 11 shown, the support body 26 can be a workbench, and the stretching drive assembly 12 is installed on the support body 26.

[0031] The stretching drive assembly 12 is a motor, and the output shaft of the motor is connected to the screw rod. The transmission wheel 32 can be a gear provided on the transmission rod 31. The screw rod can drive the gear to rotate, and an external thread is provided on the transmission rod 31; the rotation of the external thread can drive the first sliding seat 34 to translate along the length direction of the transmission rod 31. Thus, the stretching drive assembly 12 drives the clamping assembly 11 to move through the stretching transmission assembly.

[0032] Preferably, a material rack 33 is further provided on the transmission rod 31. A second sliding seat 35 is sleeved on the transmission rod 31. A through hole is provided on the second sliding seat 35. The rotation of the transmission rod 31 will not drive the second sliding seat 35 to translate through threaded connection. The material rack 33 is used to place the winding film 13 in a wound state.

[0033] During use, place the winding film 13 roll on the material rack 33, then take the head of the winding film 13 off the roll, and pass the pulled winding film 13 through the clamping assembly 11 to make the clamping assembly 11 clamp the winding film 13. Resistance blocks are provided at the contact between the material rack 33 and the roll, so that there is sufficient resistance at the contact surface between the material rack 33 and the roll. When the clamping assembly 11 moves, it will not release more winding film 13, and the released winding film 13 will not be stretched.

[0034] Preferably, an elastic member 36 is provided between the first sliding seat 34 and the second sliding seat 35. The elastic member 36 can be a spring sleeved on the transmission rod 31. The elastic member 36 is used to prevent collision between the first sliding seat 34 and the second sliding seat 35.

[0035] Furthermore, the strength rapid detection device includes two sets of clamping assemblies 11, which respectively clamp two positions of the winding film 13; the strength rapid detection device further includes two sets of stretching transmission assemblies, which are respectively connected to the two sets of clamping assemblies 11; the stretching drive assembly 12 can make the two sets of clamping assemblies 11 move away from each other through the stretching transmission assemblies, so as to stretch and extend the winding film 13.

[0036] In this embodiment, the two sets of clamping assemblies 11 and the material rack 33 are all arranged along the length direction of the transmission rod 31. The winding film 13 released from the roll first passes through one clamping assembly 11 and then through the other clamping assembly 11.

[0037] The two sets of stretching transmission assemblies can share a transmission rod 31. The transmission rod 31 is arranged along the length direction of the workbench. The gear is arranged in the middle of the transmission rod 31. The external threads on both sides of the gear have opposite helix directions. When the transmission rod 31 rotates in one direction, the first sliding seats 34 on both sides of the gear on one transmission rod 31 move towards each other. When the transmission rod 31 rotates in the other direction, the first sliding seats 34 on both sides of the gear on the transmission rod 31 move away from each other.

[0038] Furthermore, the strength rapid detection device includes two sets of clamping assemblies 11, which respectively clamp two positions of the winding film 13; the strength rapid detection device further includes four sets of stretching transmission assemblies. Among the four sets of stretching transmission assemblies, two sets of clamping assemblies 11 are respectively connected to one clamping assembly 11 through the first sliding seat 34; the other two sets of clamping assemblies 11 are connected to the other clamping assembly 11 through the first sliding seat 34; Two first sliding seats 34 connected to a clamping assembly 11 are arranged at two positions in the length direction of the fixed clamping part 111. The stretching drive assembly 12 can move the two sets of clamping assemblies 11 away from each other through the stretching transmission assembly. During the movement, the moving speeds of the two ends of the two sets of clamping assemblies 11 in the length direction are the same.

[0039] In this embodiment, the four sets of stretching transmission assemblies refer to that two sets of stretching transmission assemblies share a transmission rod 31. The four sets of stretching transmission assemblies include two transmission rods 31. The two transmission rods 31 are arranged along the width direction of the workbench. The clamping assembly 11 is connected to the two transmission rods 31 in the width direction, and the two transmission rods 31 can be evenly stressed.

[0040] Preferably, a winding table 37 is further arranged on the transmission rod 31. A winding shaft 38 is arranged on the winding table 37. The winding shaft 38 can be an electrostatic winding shaft 38. A winding driver for driving the rotation of the winding shaft 38 is also arranged on the winding table 37. The two clamping assemblies 11 are arranged between the material rack 33 and the winding table 37.

[0041] The winding film 13 released from the material roll first passes through one clamping assembly 11, then through the other clamping assembly 11, and finally winds around the winding shaft 38. The winding driver is used to tension the winding film 13 between the two clamping assemblies 11. The fact that the moving speeds of the two ends of the two sets of clamping assemblies 11 in the length direction are the same means that the winding film 13 is evenly stretched in the width direction of the winding film 13.

[0042] Preferably, as Figure 12 shown, the winding table 37 is connected to the transmission rod 31 through a second sliding seat 35. An elastic member 36 is arranged between the first sliding seat 34 and the second sliding seat 35. The elastic member 36 can be a spring sleeved on the transmission rod 31. The elastic member 36 is used to prevent collision between the first sliding seat 34 and the second sliding seat 35.

[0043] Furthermore, the strength rapid detection device further includes two sets of stretching drive assemblies 12. Each set of stretching drive assemblies 12 in the two sets of stretching drive assemblies 12 is connected to two sets of stretching transmission assemblies; the two sets of stretching transmission assemblies connected to the clamping assembly 11 are respectively connected to the two sets of stretching drive assemblies 12; A shaft hole 43 is arranged on the first sliding seat 34. The first sliding seat 34 is hinged to the fixed clamping part 111 through the shaft hole 43; on the fixed clamping part 111, a sliding track 42 is arranged along the length direction of the clamping assembly 11; among the two first sliding seats 34 connected to the clamping assembly 11, a track connection part 41 matching the sliding track 42 is arranged on one first sliding seat 34. The first sliding seat 34 is slidably connected to the fixed clamping part 111 through the sliding track 42 and the track connection part 41, and the track connection part 41 can move along the length direction of the clamping assembly 11; The sliding track 42 is a protruding part arranged on both sides of the bottom of the fixed clamping part 111. The track connecting part 41 includes a buckle that is clamped with the protruding parts on both sides of the bottom of the fixed clamping part 111; the stretching drive assembly 12 can make the two sets of clamping assemblies 11 move away from each other through the stretching transmission assembly. During the movement, the moving speeds of the two ends of the two sets of clamping assemblies 11 in the length direction are inconsistent.

[0044] In this embodiment, the two stretching drive assemblies 12 include two stretching drivers respectively arranged in the width direction of the workbench, that is, electric motors, and are respectively connected to the two transmission rods 31 in the width direction. The two stretching drivers can rotate synchronously or asynchronously. When rotating synchronously, the moving speeds of the two ends of the two sets of clamping assemblies 11 in the length direction are consistent, and the winding film 13 is evenly stretched in the width direction of the winding film 13. When rotating asynchronously, the moving speeds of the two ends of the two sets of clamping assemblies 11 in the length direction are inconsistent, and an irregular pulling force is formed on the winding film 13.

[0045] When the two stretching drivers rotate asynchronously, relative rotation and relative movement occur between the fixed clamping part 111 and the first sliding seat 34. The first sliding seat 34 and the fixed clamping part 111 are hinged through the shaft hole 43 to adapt to the rotation between the fixed clamping part 111 and the first sliding seat 34. The sliding track 42 and the track connecting part 41 are used to adapt to the relative movement between the fixed clamping part 111 and the first sliding seat 34.

[0046] Furthermore, the first sliding seat 34 and the track connecting part 41 are hinged through the shaft hole 43; a protruding shaft hole 43 is arranged on the first sliding seat 34, and the track connecting part 41 is provided with a rotating shaft 44 that matches the shape and position of the shaft hole 43. The first sliding seat 34 and the track connecting part 41 can be hinged through the shaft hole 43 and the rotating shaft 44.

[0047] In this embodiment, as Figure 13 shown, a connection method between the first sliding seat 34, the track connecting part 41, and the fixed clamping part 111 is proposed. A protruding shaft hole 43 is arranged on the first sliding seat 34, and the track connecting part 41 is provided with a rotating shaft 44 that matches the shape and position of the shaft hole 43. The first sliding seat 34 and the track connecting part 41 can be hinged through the shaft hole 43 and the rotating shaft 44. The sliding track 42 is a protruding part arranged on both sides of the bottom of the fixed clamping part 111. The track connecting part 41 includes a buckle that is clamped with the protruding parts on both sides of the bottom of the fixed clamping part 111; the stretching drive assembly 12 can make the two sets of clamping assemblies 11 move away from each other through the stretching transmission assembly.

[0048] Further, placing grooves are provided on the clamping surfaces of the fixed clamping part 111 and the movable clamping part 112, and magnetic members 51 are arranged in the placing grooves. The magnetic poles of the magnetic members 51 of the fixed clamping part 111 and the movable clamping part 112 facing each other are configured as magnetic poles attracting each other. When the fixed clamping part 111 and the movable clamping part 112 are in contact, the magnetic members 51 on the fixed clamping part 111 and the movable clamping part 112 adsorb each other, thereby fixing the winding film 13 between the fixed clamping part 111 and the movable clamping part 112.

[0049] In this embodiment, as Figure 7 shown, the magnetic member 51 can be a magnet, and one magnetic pole of the magnet is on the clamping surface. When the fixed clamping part 111 and the movable clamping part 112 are in contact, the two magnetic members 51 attract and fit with each other to realize the function of clamping and fixing the winding film 13.

[0050] Further, a pressure measuring unit 53 connected to the magnetic member 51 is further provided on the clamping assembly 11. The pressure measuring unit 53 can detect the pulling force applied by the winding film 13 to the magnetic member 51; A shielding member 52 is arranged between the magnetic member 51 and the pressure measuring unit 53. The shielding member 52 is used to reduce the interference of the magnetic field of the magnetic member 51 on the pressure measuring unit 53; A limiting member 54 is further provided on the clamping assembly 11. The limiting member 54 is used to fix the position of the magnetic member 51, and there is a gap between the limiting member 54 and the magnetic member 51 in the width direction of the clamping assembly 11.

[0051] In this embodiment, the pressure measuring unit 53 can be a force sensor or a pressure sensor. When the winding film 13 is stretched, it will pull the magnetic members 51 inside the two clamping assemblies 11 to generate a tendency to move in the direction of approaching each other. Further, a thrust is generated between the magnetic member 51 and the fixed clamping part 111 or the movable clamping part 112, and the pressure measuring unit 53 is used to detect this thrust.

[0052] The limiting member 54 can be a cover plate arranged on both sides of the clamping surface. A step matching the limiting member 54 is arranged on the magnetic member 51. The limiting member 54 is used to prevent the magnetic member 51 from falling off the fixed clamping part 111 or the movable clamping part 112.

[0053] Further, the fixed clamping part 111 and the movable clamping part 112 are hinged. The hinge part is arranged at one end in the length direction of the clamping assembly 11, and an eccentric wheel is arranged at the other end in the length direction of the clamping assembly 11. The eccentric wheel is connected with a handle 55. By rotating the handle 55, the eccentric wheel can be rotated, thereby pushing the fixed clamping part 111 and the movable clamping part 112 to separate on the clamping surface and generate a gap.

[0054] In this embodiment, as Figure 3As shown, the eccentric wheel includes a large-diameter part and a small-diameter part. The eccentric wheel in this embodiment is hinged to the movable clamping part 112. When the fixed clamping part 111 and the movable clamping part 112 are in a closed state, the small-diameter part contacts the fixed clamping part 111. At this time, by pushing the eccentric wheel to rotate through the handle 55, the large-diameter part is made to fit with the fixed clamping part 111, which can separate the fixed clamping part 111 and the movable clamping part 112, so as to place the fixed clamping part 111 and the movable clamping part 112 in an open state.

[0055] Furthermore, a plurality of magnetic members 51 are arranged on the fixed clamping part 111 and the movable clamping part 112 along the length direction of the clamping assembly 11, and some or all of the plurality of magnetic members 51 are respectively connected to the pressure measuring unit 53.

[0056] In this embodiment, the plurality of magnetic members 51 can ensure that the clamping force between the clamping assembly 11 and the winding film 13 is sufficient, and the plurality of pressure measuring units 53 can detect the forces at different positions in the width direction of the winding film 13.

[0057] Preferably, as Figure 6 shown, a cutter track 61 and a cutter 62 arranged on the cutter track 61 are further provided on the clamping assembly 11 close to the material rack 33, and the cutter 62 is used to cut off the winding film 13 after detection.

[0058] Preferably, as Figure 12 shown, a distance measuring device 63 is provided on the clamping assembly 11. The distance measuring device 63 is used to detect the distance between the two clamping assemblies 11, and further detect the stretching distance data when stretching the winding film 13. The distance measuring device 63 can be a laser rangefinder.

[0059] The above has described the various embodiments disclosed by the present invention. The above description is exemplary and not exhaustive, and the scope of the present invention is not limited to the above embodiments. Many modifications and changes are obvious to those of ordinary skill in the art in the technical field of the present invention without departing from the spirit and scope of the present invention. That is to say, those of ordinary skill in the art can make various changes and improvements in form and details to the present invention, and these are all considered to fall within the protection scope of the present invention. The selection of the terms used herein is intended to best explain the principles of the various embodiments, the actual applications, or the improvements to the technologies in the market, or to enable those of ordinary skill in the technical field of the present invention to understand the various embodiments disclosed herein.

Claims

1. A rapid strength detection device for stretch wrapping film, which is used to stretch the wrapping film (13) to detect the strength of the wrapping film (13); characterized in that, The strength rapid detection device includes a clamping assembly (11) for clamping the winding film (13), a stretching drive assembly (12) connected to the clamping assembly (11) for stretching and extending the winding film (13), and a stretching transmission assembly; The clamping assembly (11) includes a fixed clamping part (111) and a movable clamping part (112) that are hinged to each other. Clamping surfaces are respectively arranged on the fixed clamping part (111) and the movable clamping part. The fixed clamping part (111) and the movable clamping part can rotate relative to the hinge part to a position where the clamping surfaces of the fixed clamping part (111) and the movable clamping part are mutually attached; the clamping surfaces of the fixed clamping part (111) and the movable clamping part can clamp the winding film (13) from both sides of the winding film (13); The stretching drive assembly (12) and the stretching transmission assembly are connected to the clamping assembly (11), and can drive the clamping assembly (11) to move, thereby stretching and extending the winding film (13) to detect the strength of the winding film (13); A pressure measuring unit (53) is arranged on the clamping assembly (11), and the pressure measuring unit (53) is used to detect the tensile force applied to the winding film (13) by the stretching drive assembly (12) through the clamping assembly (11).

2. The strength rapid detection device for stretch wrapping film according to claim 1, wherein: The strength rapid detection device further includes a support body (26), and the support body (26) is used to connect the clamping assembly (11), the stretching drive assembly (12) and the stretching transmission assembly; The stretching transmission assembly includes a screw rod connected to the stretching drive assembly (12), and a transmission rod (31) connected to the screw rod. A transmission wheel (32) matching the screw rod is arranged at one end of the transmission rod (31) connected to the screw rod, and an external thread is arranged on the transmission rod (31); the stretching transmission assembly further includes a first sliding seat (34) connected to the clamping assembly (11), and an internal thread hole matching the external thread of the transmission rod (31) is arranged on the first sliding seat (34); the stretching drive assembly (12) can drive the screw rod to rotate, thereby driving the transmission wheel (32) and the transmission rod (31) to rotate, and finally making the first sliding seat (34) and the clamping assembly (11) translate along the length direction of the transmission rod (31).

3. The strength rapid detection device for stretch wrapping film according to claim 2, wherein: The strength rapid detection device includes two sets of clamping assemblies (11), and the two sets of clamping assemblies (11) respectively clamp two positions of the winding film (13); the strength rapid detection device further includes two sets of stretching transmission assemblies, and the two sets of stretching transmission assemblies are respectively connected to the two sets of clamping assemblies (11); the stretching drive assembly (12) can make the two sets of clamping assemblies (11) move in a direction away from each other through the stretching transmission assembly, thereby stretching and extending the winding film (13).

4. The strength rapid detection device for stretching and winding film according to claim 2, wherein: The strength rapid detection device includes two sets of clamping assemblies (11), and the two sets of clamping assemblies (11) respectively clamp two positions of the winding film (13); the strength rapid detection device further includes four sets of stretching transmission assemblies. Among the four sets of stretching transmission assemblies, two sets of clamping assemblies (11) are respectively connected to a clamping assembly (11) through a first sliding seat (34); the other two sets of clamping assemblies (11) are connected to another clamping assembly (11) through a first sliding seat (34); Two first sliding seats (34) connected to a clamping assembly (11) are arranged at two positions in the length direction of the fixed clamping part (111). The stretching drive assembly (12) can move the two clamping assemblies (11) away from each other through the stretching transmission assembly. During the movement, the moving speeds of the two ends in the length direction of the two clamping assemblies (11) are the same.

5. The strength rapid detection device for stretch wrapping film according to claim 4, wherein: The strength rapid detection device further includes two stretching drive assemblies (12). In each of the two stretching drive assemblies (12), each stretching drive assembly (12) is connected to two stretching transmission assemblies; the two stretching transmission assemblies connected to the clamping assembly (11) are respectively connected to the two stretching drive assemblies (12); A shaft hole (43) is arranged on the first sliding seat (34). The first sliding seat (34) is hinged to the fixed clamping part (111) through the shaft hole (43); on the fixed clamping part (111), a sliding track (42) is arranged along the length direction of the clamping assembly (11); among the two first sliding seats (34) connected to the clamping assembly (11), a track connection part (41) matching the sliding track (42) is arranged on one first sliding seat (34). The first sliding seat (34) is slidably connected to the fixed clamping part (111) through the sliding track (42) and the track connection part (41), and the track connection part (41) can move along the length direction of the clamping assembly (11); The sliding track (42) is a protruding part arranged on both sides of the bottom of the fixed clamping part (111). The track connection part (41) includes a buckle clamped to the protruding parts on both sides of the bottom of the fixed clamping part (111); the stretching drive assembly (12) can move the two clamping assemblies (11) away from each other through the stretching transmission assembly. During the movement, the moving speeds of the two ends in the length direction of the two clamping assemblies (11) are not the same.

6. The strength rapid detection device for stretch wrapping film according to claim 5, wherein: The first sliding seat (34) is hinged to the track connection part (41) through the shaft hole (43); a protruding shaft hole (43) is arranged on the first sliding seat (34), and a rotating shaft (44) matching the shape and position of the shaft hole (43) is arranged on the track connection part (41). The first sliding seat (34) and the track connection part (41) can be hinged through the shaft hole (43) and the rotating shaft (44).

7. A rapid strength detection device for stretch wrapping film according to claim 1, characterized in that: Placing grooves are arranged on the clamping surfaces of the fixed clamping part (111) and the movable clamping part (112). Magnetic parts (51) are arranged in the placing grooves. The magnetic poles of the magnetic parts (51) of the fixed clamping part (111) and the movable clamping part (112) facing each other are configured as magnetic poles attracting each other. When the fixed clamping part (111) and the movable clamping part (112) are attached, the magnetic parts (51) on the fixed clamping part (111) and the movable clamping part (112) adsorb each other to fix the winding film (13) between the fixed clamping part (111) and the movable clamping part (112).

8. An apparatus for rapidly detecting the strength of a stretch wrapping film according to claim 7, wherein: A pressure measuring unit (53) connected to the magnetic part (51) is further arranged on the clamping assembly (11). The pressure measuring unit (53) can detect the pulling force applied by the winding film (13) to the magnetic part (51); A shielding member (52) is provided between the magnetic member (51) and the pressure measuring unit (53), and the shielding member (52) is used to reduce the interference of the magnetic field of the magnetic member (51) on the pressure measuring unit (53). A limiting member (54) is further provided on the clamping assembly (11), and the limiting member (54) is used to fix the position of the magnetic member (51). There is a gap between the limiting member (54) and the magnetic member (51) in the width direction of the clamping assembly (11).

9. The strength rapid detection device for stretch wrapping film according to claim 7, wherein: The fixed clamping part (111) and the movable clamping part (112) are hinged, and the hinge part is arranged at one end in the length direction of the clamping assembly (11). An eccentric wheel is arranged at the other end in the length direction of the clamping assembly (11), and the eccentric wheel is connected with a handle (55). By rotating the handle (55), the eccentric wheel can be rotated, and then the fixed clamping part (111) and the movable clamping part (112) can be separated on the clamping surface to generate a gap.

10. A rapid strength detection device for stretch wrapping film according to any one of claims 7 to 9, characterized in that: A plurality of magnetic members (51) are arranged on the fixed clamping part (111) and the movable clamping part (112) along the length direction of the clamping assembly (11), and some or all of the plurality of magnetic members (51) are respectively connected to the pressure measuring unit (53).

Images