Winding film performance detection device

Abstract

The invention discloses a wrapping film performance detection device, and relates to the technical field of wrapping film performance detection. The device comprises a bottom plate, a first support is fixed to the rear side of the upper end of the bottom plate. The upper portion of the first support is rotationally connected with a supporting roller used for winding a to-be-detected winding film. The supporting roller is driven by a first motor fixed to the first support. A second support fixed to the bottom plate is arranged on the front side of the first support. The upper portion of the second support is rotationally connected with a winding roller used for receiving the winding film. The winding roller is driven by a second motor fixed on the second bracket; the supporting roller and the winding roller are correspondingly parallel and are arranged in the left-right direction. And a local stretching mechanism is arranged outside the winding roller. The winding film stretching device has the beneficial effects that the winding film can be stretched and flattened, the local stretching performance of each part of the winding film can be detected, and the uniformity of the stretching performance of each part of the winding film is effectively verified.

Description

Technical Field

[0001] The present invention relates to the technical field of performance detection of stretch films, and in particular to a stretch film performance detection device. Background Art

[0002] Stretch film is a commonly used packaging material used to wrap food, medicine, cosmetics and other products to extend their shelf life and protect their quality. Due to different application fields, the strength of the stretch film will also have corresponding requirements, so the tensile properties of the stretch film need to be tested.

[0003] Since the stretch film needs to be pulled out of the stretch film tube for a certain length during testing, the stretched part is prone to unevenness during this process, resulting in wrinkles on the stretch film and a reduction in the overall width. At this time, the tensile performance value tested is inaccurate. In addition, the current testing method tests the overall tensile performance of the stretch film, rather than the local tensile performance, and cannot effectively verify the uniformity of the tensile performance of various parts of the stretch film. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a stretch film performance detection device for the above-mentioned technical deficiencies, which can stretch the stretch film flat, detect the local tensile properties of the stretch film, and effectively verify the uniformity of the tensile properties of the stretch film.

[0005] The technical solution adopted by the present invention is: to provide a wrapping film performance detection device, comprising a bottom plate; a first bracket is fixed to the rear side of the upper end of the bottom plate; a support roller for winding the wrapping film to be detected is rotatably connected to the upper part of the first bracket; the support roller is driven by a first motor fixed to the first bracket; a second bracket fixed to the bottom plate is arranged at the front side of the first bracket; a winding roller for receiving the wrapping film is rotatably connected to the upper part of the second bracket; the winding roller is driven by a second motor fixed to the second bracket; the support roller and the winding roller are parallel to each other and both are arranged in the left-right direction; a local stretching mechanism is arranged outside the winding roller;

[0006] The winding roller comprises a bearing roller rotatably connected to the left side of the second bracket; a stretching roller is coaxially arranged on the right side of the bearing roller; the stretching roller and the bearing roller have the same diameter; an extension shaft is coaxially fixed to the right end of the stretching roller; the extension shaft rotates and passes through the right side of the second bracket; the bearing roller and the stretching roller are connected through a first telescopic device; the first telescopic device is used to drive the stretching roller to approach or move away from the bearing roller;

[0007] The local stretching mechanism comprises a slide slot opened on the front side of the upper end of the bottom plate; the slide slot is located in the front of the second bracket; the mounting seat is slidably connected in the slide slot along the front and rear directions; the mounting seat is driven by a second telescopic device fixed at the front end of the slide slot; a screw rod is arranged on the upper end of the mounting seat along the left and right directions; the screw rod is rotatably connected to the mounting seat; the screw rod is driven by a third motor fixed on the mounting seat; a base is slidably arranged on the upper end of the mounting seat in the left and right directions; the base is screwed on the screw rod; the third telescopic end of the third telescopic device is fixed on the upper end of the base; the telescopic end of the third telescopic device is vertically upward and fixed to the first extension frame arranged backward; the front end of the base is fixed with a second extension frame arranged backward; the first extension frame crosses over the winding roller; the second extension frame crosses under the winding roller; the rear end of the first extension frame is fixed downwardly with a pressure block; the rear end of the second extension frame is fixed upwardly with a support block; the support block is correspondingly located below the pressure block, and the support block is lower than the lower end of the winding roller.

[0008] A dynamometer fixed on the bottom plate is arranged at the rear of the mounting seat; the action end of the dynamometer is fixed to the rear end of the mounting seat; a distance meter fixed on the bottom plate is arranged in front of the mounting seat; the distance meter is used to detect the moving distance of the mounting seat in the slide slot.

[0009] To further optimize the technical solution, a wrapping film performance testing device has coaxial mounting grooves on the right end of the load-bearing roller and the left end of the stretching roller; the fixed end of the first expander is connected to the mounting groove on the left, and the telescopic end of the first expander is connected to the mounting groove on the right.

[0010] To further optimize the technical solution, a pressure-applying telescope is provided on the bottom plate of a wrapping film performance testing device; the fixed end of the pressure-applying telescope is fixed to the bottom plate, the telescopic end of the pressure-applying telescope is vertically upward and fixed with a push block; the push block is located at the lower side of the left end of the bearing roller.

[0011] To further optimize the technical solution, friction rubber pads are respectively fixed to the lower end of a pressing block and the upper end of a supporting block of a stretch film performance testing device.

[0012] The beneficial effects of the present invention are:

[0013] By winding the wrapping film with the support roller and receiving the end of the wrapping film with the winding roller, the wrapping film can be pulled out to stretch and expose the position to be detected, thereby facilitating continuous detection of various positions of the wrapping film.

[0014] The first telescopic device can control the relative distance between the stretching roller and the supporting roller, so that the wrapping film wound on the winding roller can be stretched in the width direction, thereby driving the part of the wrapping film exposed between the supporting roller and the winding roller to be stretched in the width direction, ensuring the accuracy of the tensile performance test.

[0015] By extending and retracting the third expansion joint, the support block and the pressure block can partially clamp the flat part of the stretch film, and the second expansion joint can drive the mounting seat to move forward and backward, so that the support block and the pressure block can stretch the stretch film while clamping the stretch film. The tensile force here can be detected by the tensile gauge, and the rangefinder can detect the degree of stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the structural decomposition of the winding roller;

[0018] Figure 3 Schematic diagram of the structure on the base.

[0019] In the figure, 1, bottom plate; 2, first bracket; 3, support roller; 4, first motor; 5, second bracket; 6, winding roller; 7, second motor; 8, bearing roller; 9, stretching roller; 10, extension shaft; 11, first telescope; 12, slide groove; 13, mounting seat; 14, second telescope; 15, screw rod; 16, third motor; 17, base; 18, third telescope; 19, first extension frame; 20, second extension frame; 21, pressure block; 22, support block; 23, dynamometer; 24, distance meter; 25, mounting groove; 26, pressure telescope; 27, push block; 28, friction rubber pad. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 As shown, a wrapping film performance detection device comprises a bottom plate 1; a first bracket 2 is fixed to the rear side of the upper end of the bottom plate 1; a support roller 3 for winding the wrapping film to be detected is rotatably connected to the upper part of the first bracket 2; the support roller 3 is driven by a first motor 4 fixed to the first bracket 2; a second bracket 5 fixed to the bottom plate 1 is arranged at the front side of the first bracket 2; a winding roller 6 for receiving the wrapping film is rotatably connected to the upper part of the second bracket 5; the winding roller 6 is driven by a second motor 7 fixed to the second bracket 5; the support roller 3 and the winding roller 6 are parallel to each other, and both are arranged in the left-right direction; a local stretching mechanism is arranged on the outside of the winding roller 6;

[0022] like Figure 1-2As shown, the winding roller 6 includes a bearing roller 8 rotatably connected to the left side of the second bracket 5; a stretching roller 9 is coaxially arranged on the right side of the bearing roller 8; the stretching roller 9 has the same diameter as the bearing roller 8; an extension shaft 10 is coaxially fixed to the right end of the stretching roller 9; the extension shaft 10 rotates and passes through the right side of the second bracket 5; the bearing roller 8 and the stretching roller 9 are connected through a first retractor 11; the first retractor 11 is used to drive the stretching roller 9 to move closer to or away from the bearing roller 8;

[0023] like Figure 1-3 As shown, the local stretching mechanism includes a slide groove 12 opened on the front side of the upper end of the bottom plate 1; the slide groove 12 is located in front of the second bracket 5; a mounting seat 13 is slidably connected in the slide groove 12 along the front-to-back direction; the mounting seat 13 is driven by a second telescoping device 14 fixed at the front end of the slide groove 12; a screw rod 15 is arranged at the upper end of the mounting seat 13 along the left-right direction; the screw rod 15 is rotatably connected to the mounting seat 13; the screw rod 15 is driven by a third motor 16 fixed on the mounting seat 13; a base 17 is slidably arranged at the upper end of the mounting seat 13 along the left-right direction; the base 17 is screwed On the screw rod 15; a third telescopic device 18 is fixed to the upper end of the base 17; the telescopic end of the third telescopic device 18 is vertically upward and fixed with a first extension frame 19 arranged backward; a second extension frame 20 arranged backward is fixed to the front end of the base 17; the first extension frame 19 crosses over the winding roller 6; the second extension frame 20 crosses under the winding roller 6; a pressure block 21 is fixed downward at the rear end of the first extension frame 19; a support block 22 is fixed upward at the rear end of the second extension frame 20; the support block 22 is correspondingly located below the pressure block 21, and the support block 22 is lower than the lower end of the winding roller 6;

[0024] like Figure 1 As shown, a dynamometer 23 fixed on the base plate 1 is provided at the rear of the mounting seat 13; the action end of the dynamometer 23 is fixed to the rear end of the mounting seat 13; a distance meter 24 fixed on the base plate 1 is provided in front of the mounting seat 13; the distance meter 24 is used to detect the moving distance of the mounting seat 13 in the slide groove 12.

[0025] The wrapping film to be tested is wound on the support roller 3, and the end of the wrapping film is wound on the winding roller 6. The part between the support roller 3 and the winding roller 6 is the position for testing the wrapping film. In order to ensure the accuracy of the test, the part between the support roller 3 and the winding roller 6 needs to be as flat as possible without obvious wrinkles.

[0026] The wrapping film initially wound on the support roller 3 can be wound by a dedicated film winding machine, so it can be kept flat. Therefore, only the part wound on the winding roller 6 needs to be kept flat and stretched, so that the part unfolded between the support roller 3 and the winding roller 6 can be kept flat.

[0027] In order to make the wrapping film stretch smoothly after being wound on the winding roller 6, the winding roller 6 is arranged as a load-bearing roller 8 and a stretching roller 9 separated from each other in the technical scheme. After the wrapping film is wound, the stretching roller 9 is controlled to move away from the load-bearing roller 8 by the first telescoping device 11, so that the wrapping film can be stretched and effectively stretched flat.

[0028] After the unfolded part between the support roller 3 and the winding roller 6 is adjusted to be flat, the third retractor 18 is used to control the pressing block 21 to be pressed down, so that the pressing block 21 and the supporting block 22 can firmly clamp the part of the wrapping film, and then the second retractor 14 is used to drive the mounting seat 13 to move backward, so that the supporting block 22 and the pressing block 21 can stretch the wrapping film while clamping the wrapping film, and the tensile force here can be detected by the tensile meter 23, and the rangefinder 24 can detect the degree of stretching.

[0029] The third retractor 18 controls the pressure block 21 to separate from the support block 22. After releasing the clamping of the wrapping film, the third motor 16 controls the screw rod 15 to rotate, which can change the position of the base 17 in the left and right directions, making it convenient to test the tensile performance of another position in the width direction of the wrapping film. By comparing the tensile performance test data of multiple positions, the uniformity of the tensile performance of each part of the wrapping film can be effectively verified. Compared with the traditional overall tensile performance test, this technical solution realizes the detection of the tensile performance of the wrapping film from another test perspective.

[0030] like Figure 2 As shown, the right end of the load-bearing roller 8 and the left end of the stretching roller 9 are coaxially provided with a mounting groove 25; the fixed end of the first retractor 11 is connected to the mounting groove 25 on the left, and the telescopic end of the first retractor 11 is connected to the mounting groove 25 on the right.

[0031] The installation groove 25 can provide an installation position for the first retractor 11 , so that the separation distance between the carrying roller 8 and the stretching roller 9 does not need to be too far, thereby improving the convenience of the stretching operation of the wrapping film on the winding roller 6 .

[0032] like Figure 1 As shown, a pressure-applying telescopic device 26 is provided on the bottom plate 1 ; the fixed end of the pressure-applying telescopic device 26 is fixed to the bottom plate 1 , and the telescopic end of the pressure-applying telescopic device 26 is vertically upward and fixed with a push block 27 ; the push block 27 is located at the lower side of the left end of the bearing roller 8 .

[0033] The pressure-applying retractor 26 can control the push block 27 and the carrying roller 8 to clamp the wrapping film. When the wrapping film on the winding roller 6 is stretched, the wrapping film is effectively prevented from being displaced axially along the carrying roller 8, thereby improving the reliability of the stretching operation.

[0034] like Figure 3As shown, friction rubber pads 28 are respectively fixed to the lower end of the pressing block 21 and the upper end of the supporting block 22. The friction rubber pads 28 can not only act as a buffer to prevent the wrapping film from being damaged by the clamping, but also improve the firmness of the wrapping film clamping and positioning to prevent it from slipping between the pressing block 21 and the supporting block 22, thereby improving the accuracy of the tensile test.

[0035] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A stretch film performance testing device, Features: The invention comprises a bottom plate (1); a first bracket (2) is fixed on the rear side of the upper end of the bottom plate (1); a support roller (3) for winding the winding film to be detected is rotatably connected to the upper part of the first bracket (2); the support roller (3) is driven by a first motor (4) fixed to the first bracket (2); a second bracket (5) fixed to the bottom plate (1) is arranged on the front side of the first bracket (2); a winding roller (6) for receiving the winding film is rotatably connected to the upper part of the second bracket (5); the winding roller (6) is driven by a second motor (7) fixed to the second bracket (5); the support roller (3) and the winding roller (6) are parallel to each other and both are arranged in the left-right direction; a local stretching mechanism is arranged outside the winding roller (6); The winding roller (6) comprises a bearing roller (8) rotatably connected to the left side of the second bracket (5); a stretching roller (9) is coaxially arranged on the right side of the bearing roller (8); the stretching roller (9) and the bearing roller (8) have the same diameter; an extension shaft (10) is coaxially fixed to the right end of the stretching roller (9); the extension shaft (10) rotatably passes through the right side of the second bracket (5); the bearing roller (8) and the stretching roller (9) are connected via a first telescopic device (11); the first telescopic device (11) is used to drive the stretching roller (9) to move closer to or away from the bearing roller (8); The local stretching mechanism comprises a slide groove (12) opened on the front side of the upper end of the base plate (1); the slide groove (12) is located in front of the second bracket (5); a mounting seat (13) is slidably connected in the slide groove (12) along the front-back direction; the mounting seat (13) is driven by a second telescopic device (14) fixed at the front end of the slide groove (12); a screw rod (15) is arranged at the upper end of the mounting seat (13) along the left-right direction; the screw rod (15) is rotatably connected to the mounting seat (13); the screw rod (15) is driven by a third motor (16) fixed on the mounting seat (13); a base (17) is slidably arranged at the upper end of the mounting seat (13) along the left-right direction; the base (17) is screwed on On the screw rod (15); a third telescopic device (18) is fixed on the upper end of the base (17); the telescopic end of the third telescopic device (18) is vertically upward and fixed with a first extension frame (19) arranged backward; the front end of the base (17) is fixed with a second extension frame (20) arranged backward; the first extension frame (19) passes over the top of the winding roller (6); the second extension frame (20) passes under the winding roller (6); a pressure block (21) is fixed downward at the rear end of the first extension frame (19); a support block (22) is fixed upward at the rear end of the second extension frame (20); the support block (22) is correspondingly located below the pressure block (21), and the support block (22) is lower than the lower end of the winding roller (6); A dynamometer (23) fixed on the base plate (1) is arranged at the rear of the mounting seat (13); an active end of the dynamometer (23) is fixed to the rear end of the mounting seat (13); a distance meter (24) fixed on the base plate (1) is arranged in front of the mounting seat (13); the distance meter (24) is used to detect the moving distance of the mounting seat (13) in the slide groove (12).

2. A stretch film performance detection device according to claim 1, Features: The right end of the bearing roller (8) and the left end of the stretching roller (9) are both coaxially provided with mounting grooves (25); the fixed end of the first telescopic device (11) is connected to the mounting groove (25) on the left side, and the telescopic end of the first telescopic device (11) is connected to the mounting groove (25) on the right side.

3. A stretch film performance detection device according to claim 1, Features: A pressure-applying telescopic device (26) is provided on the bottom plate (1); the fixed end of the pressure-applying telescopic device (26) is fixed to the bottom plate (1); the telescopic end of the pressure-applying telescopic device (26) is vertically upward and is fixed with a push block (27); the push block (27) is located at the lower side of the left end of the bearing roller (8).

4. A stretch film performance detection device according to claim 1, Features: The lower end of the pressing block (21) and the upper end of the supporting block (22) are respectively fixed with friction rubber pads (28).

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