A polypropylene film surface flatness detection device

Abstract

This invention provides a polypropylene film surface flatness testing device, belonging to the field of film production technology. Addressing the problem that films are soft materials and their edges are prone to folding during testing, existing testing devices are inconvenient for flattening the folded areas of the film, easily misidentifying folded areas as unevenness and affecting testing accuracy. This invention solves the problem of existing testing devices being unable to flatten the folded areas of the film, as the film's edges are easily folded during testing due to its softness. The device includes a base plate, with a first support fixedly connected to the top of the base plate, and a second support fixedly connected to the top of the first support. Both the first and second supports are equipped with flattening components, each including a control mechanism and two sets of connecting mechanisms. A first roller group is located on the left side of the first support and the right side of the second support, and a second roller group is located on the top right side of the first support and the top left side of the base plate.

Description

Technical Field

[0001] This utility model relates to the technical field of film production, and specifically to a device for detecting the surface flatness of polypropylene film. Background Technology

[0002] Polypropylene film is widely used in food packaging, pharmaceuticals, and chemical industries due to its advantages such as good transparency, ease of use, and low price. Among these, food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, retortable food packaging, and fast food packaging. These products have brought great convenience to people's lives. However, current applications have certain requirements for the flatness of the film. Therefore, relevant tests on the surface flatness of the film are carried out before the film leaves the factory.

[0003] Thin films are soft materials, and their edges and corners are prone to folding during testing. Existing testing devices are not good at smoothing out the folded areas of the film, and the folded areas are easily identified as uneven areas during testing, which affects the accuracy of the test. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem in the background art that the film is a soft material and its edges and corners are prone to folding during the testing process. Existing testing devices are not convenient for smoothing the folded parts of the film, and the folded parts are easily identified as uneven parts during testing, which affects the accuracy of the test.

[0005] Based on the above technical concept, the technical solution adopted by this utility model is as follows:

[0006] A polypropylene film surface flatness testing device includes a base plate, a first support fixedly connected to the top of the base plate, a second support fixedly connected to the top of the first support, and flattening components on both the first and second supports. Each flattening component includes a control mechanism and two sets of connecting mechanisms. A first roller assembly is located on the left side of the first support and the right side of the second support. A second roller assembly is located on the top right side of the first support and the top left side of the base plate. A support mechanism is located on the top right side of the base plate, and a pressing mechanism is provided on the support mechanism. A mounting plate is fixedly connected to the right side of the base plate, and a fixing frame is located on the top of the mounting plate. Multiple sets of testing mechanisms are located at the bottom of the fixing frame. The flattening components are used to flatten the folded corners of the film, the pressing mechanisms are used to press and limit the film, and the testing mechanisms are used to test the flatness of the film.

[0007] Further defining the above technical solution, the first roller group includes two sets of first roller plates, which are respectively fixedly installed on the front and rear right sides of the second bracket, and the two sets of first roller plates are rotatably connected to the side of each other that is close to each other.

[0008] Further defining the above technical solution, the second roller group includes two sets of second roller plates, which are respectively fixedly installed on the front and rear sides of the top right of the first bracket, and the two sets of second roller plates are rotatably connected to the side of each other that is close to each other.

[0009] Further defining the above technical solution, the control mechanism includes a control side plate, which is fixedly disposed behind the first bracket. A control plate is fixedly connected to the top left side of the control side plate. A control groove is provided at the bottom of the control plate. A control motor is disposed on the left side of the inner cavity of the control groove. A control screw is disposed at the power output end on the right side of the control motor. The control screw is a forward and reverse screw. Two sets of control slide plates are screwed onto the control screw. The two sets of connecting mechanisms are respectively disposed at the bottom of the two sets of control slide plates.

[0010] Further defining the above technical solution, the connecting mechanism includes a connecting motor, which is fixedly mounted on the bottom of the control slide plate. A connecting rod is provided at the bottom power output end of the connecting motor. A connecting plate is fixedly connected to the bottom of the connecting rod. A connecting groove is provided at the bottom of the connecting plate. A connecting spring is fixedly connected to the top of the inner cavity of the connecting groove. A connecting slide plate is fixedly connected to the bottom of the connecting spring. A flat block is fixedly connected to the bottom of the connecting slide plate.

[0011] Further defining the above technical solution, the support mechanism includes two sets of support plates, which are respectively disposed on the front and rear sides of the top right side of the base plate. Each set of support plates has a support groove on the side closest to each other. Each set of support grooves has a support rod inside. Each set of support rods has a support slide plate slidably connected to its outer side. Each set of support slide plates has a support spring at its top. Each set of support springs is sleeved on the outer side of the two sets of support rods. The pressing mechanism includes a pressing top plate.

[0012] Further defining the above technical solution, the left and right sides of the pressing top plate are respectively fixedly connected to two sets of supporting sliding plates, and pressing rods are fixedly connected to the bottom left and right sides of the pressing top plate, and pressing plates are fixedly connected to the bottom of the two sets of pressing rods.

[0013] Further defining the above technical solution, the fixing frame includes two sets of fixing side plates, which are respectively fixedly installed on the top left and right sides of the mounting plate. A fixing plate is fixedly connected to the top plate on the side of the two sets of fixing side plates that are close to each other. The detection mechanism includes a detection top plate.

[0014] Further defining the above technical solution, the detection top plate is fixedly installed at the bottom of the fixed plate, a distance sensor is fixedly installed at the bottom of the detection top plate, detection side plates are fixedly connected to the left and right sides of the bottom of the detection top plate, a detection roller is provided in front of the two sets of detection side plates, and detection rods are rotatably connected to the left and right sides of the detection roller. Detection grooves adapted to the two sets of detection rods are respectively opened on the side of the two sets of detection side plates that are close to each other, and the two sets of detection rods are slidably connected in the two sets of detection grooves.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] High applicability: In use, the film passes through the bottom of the connecting mechanism on both sides of the top of the second bracket from the top left side, then through the bottom of the second roller and the two sets of connecting mechanisms of the first bracket, then through the bottom of the second roller and the bottom of the pressing plate set on the top left side of the base plate, and finally through the bottom of the detection mechanism. In use, the connecting mechanism is activated to drive the connecting rod to rotate. The connecting rod rotates through the flattening block of the connecting plate and the connecting slide belt. Under the elastic force of the connecting spring, the flattening block contacts the top surface of the film to flatten the film. After being flattened, the film is pressed by the pressing plate and then detected by the detection roller. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a polypropylene film surface flatness detection device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the first and second supports of the polypropylene film surface flatness detection device of this utility model.

[0020] Figure 3 This is a cross-sectional structural diagram of the control mechanism and connection mechanism of the polypropylene film surface flatness detection device of this utility model;

[0021] Figure 4 This is a cross-sectional schematic diagram of the support mechanism and pressing mechanism of the polypropylene film surface flatness detection device of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the detection mechanism of a polypropylene film surface flatness detection device according to the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. First support; 3. Second support; 4. Control mechanism; 401. Control side plate; 402. Control plate; 403. Control groove; 404. Control motor; 405. Control screw; 406. Control slide plate; 5. Connecting mechanism; 501. Connecting motor; 502. Connecting rod; 503. Connecting plate; 504. Connecting groove; 505. Connecting spring; 506. Connecting slide plate; 507. Flat block; 6. First roller group; 601. First roller plate; 602. First roller; 7. Second roller group; 701. 702. Second roller plate; 8. Support mechanism; 801. Support plate; 802. Support groove; 803. Support rod; 804. Support slide plate; 805. Support spring; 9. Pressing mechanism; 901. Pressing top plate; 902. Pressing rod; 903. Pressing plate; 10. Mounting plate; 11. Fixing frame; 111. Fixing side plate; 112. Fixing plate; 12. Detection mechanism; 121. Detection top plate; 122. Distance sensor; 123. Detection side plate; 124. Detection roller; 125. Detection rod; 126. Detection groove. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail below.

[0025] Example 1: This example provides a device for detecting the surface flatness of polypropylene film, such as... Figure 1 As shown, this invention addresses the problem that films, being soft materials, are prone to folding at their edges during testing. Existing testing devices often fail to properly smooth out the folds, easily misidentifying them as uneven areas and affecting accuracy. The invention includes a base plate 1, with a first support 2 fixedly connected to its top. A second support 3 is fixedly connected to the top of the first support 2. Both the first and second supports 2 and 3 are equipped with smoothing components, including a control mechanism 4 and two sets of connecting mechanisms 5. The left side of the first support 2 and the second support 3 are also connected to these components. The right side of the first support 2 is provided with a first roller group 6, the top right side of the first support 2 and the top left side of the base plate 1 are provided with a second roller group 7, the top right side of the base plate 1 is provided with a support mechanism 8, the support mechanism 8 is provided with a pressing mechanism 9, the right side of the base plate 1 is fixedly connected with a mounting plate 10, the top of the mounting plate 10 is provided with a fixing frame 11, the bottom of the fixing frame 11 is provided with multiple sets of detection mechanisms 12, wherein the flattening component is used to flatten the corner folds of the film, the pressing mechanism 9 is used to press and limit the film, and the detection mechanism 12 is used to detect the flatness of the film.

[0026] Combination Figures 1-5In this embodiment of the present invention, the first roller group 6 includes two sets of first roller plates 601, which are respectively fixedly disposed on the front and rear right sides of the second bracket 3. A first roller 602 is rotatably connected to the side of the two sets of first roller plates 601 that are close to each other. The second roller group 7 includes two sets of second roller plates 701, which are respectively fixedly disposed on the front and rear right sides of the top of the first bracket 2. A second roller 702 is rotatably connected to the side of the two sets of second roller plates 701 that are close to each other. The control mechanism 4 includes a control side plate 401, which is fixedly disposed behind the first bracket 2. A control plate 402 is fixedly connected to the top left side of the control side plate 401. A control groove 403 is provided at the bottom of the control plate 402. A control motor 404 is provided on the left side of the inner cavity of the control groove 403. A control screw 405 is provided at the right power output end of the control motor 404. The control screw 405 is a forward and reverse screw, and a screw threaded onto the control screw 405. There are two sets of control slide plates 406, and two sets of connecting mechanisms 5 are respectively set at the bottom of the two sets of control slide plates 406. The connecting mechanism 5 includes a connecting motor 501, which is fixedly set at the bottom of the control slide plate 406. The bottom power output end of the connecting motor 501 is provided with a connecting rod 502. The bottom of the connecting rod 502 is fixedly connected to a connecting plate 503. The bottom of the connecting plate 503 is provided with a connecting groove 504. The top of the inner cavity of the connecting groove 504 is fixedly connected to a connecting spring 505. The bottom of the connecting spring 505 is fixedly connected to a connecting slide plate 506. The bottom of the connecting slide plate 506 is fixedly connected to a flat block 507. The support mechanism 8 includes two sets of support plates 801, and two sets of support... Support plates 801 are respectively set on the front and rear sides of the top right side of the base plate 1. Support grooves 802 are provided on the sides of the two sets of support plates 801 that are close to each other. Support rods 803 are provided inside the cavities of the two sets of support grooves 802. Support slide plates 804 are slidably connected to the outer sides of the two sets of support rods 803. Support springs 805 are provided at the top of the two sets of support slide plates 804. The two sets of support springs 805 are respectively sleeved on the outer sides of the two sets of support rods 803. The pressing mechanism 9 includes a pressing top plate 901. The left and right sides of the pressing top plate 901 are fixedly connected to the two sets of support slide plates 804 respectively. Pressing rods 902 are fixedly connected to the left and right sides of the bottom of the pressing top plate 901. A pressing plate 903 is fixedly connected to the bottom. The fixing frame 11 includes two sets of fixed side plates 111, which are respectively fixedly installed on the top left and right sides of the mounting plate 10. A fixing plate 112 is fixedly connected to the top plate of the side of the two sets of fixed side plates 111 that are close to each other. The detection mechanism 12 includes a detection top plate 121, which is fixedly installed at the bottom of the fixing plate 112. A distance measuring sensor 122 is fixedly installed at the bottom of the detection top plate 121. Detection side plates 123 are fixedly connected to the left and right sides of the bottom of the detection top plate 121. A detection roller 124 is provided in front of the two sets of detection side plates 123. Detection rods 125 are rotatably connected to the left and right sides of the detection roller 124.Each of the two sets of detection side plates 123 has a detection groove 126 on its side that is close to each other, which is adapted to the two sets of detection rods 125. The two sets of detection rods 125 are slidably connected in the two sets of detection grooves 126.

[0027] The control motor 404 can rotate in both directions. Starting the control motor 404 drives the control screw 405 to rotate in the forward direction. The control screw 405 drives the two sets of control slide plates 406 to rotate. Both sets of control slide plates 406 are square plates and are slidably connected in the control groove 403. Under the limit of the control groove 403, the two sets of control slide plates 406 move closer to each other. The two sets of control slide plates 406 respectively drive the two sets of connecting motors 501 to move closer to each other, thereby adjusting the distance between the two sets of flat blocks 507 on the two sets of connecting mechanisms 5 to adapt to films of different widths. In use, the film is passed through the bottom of the two sets of flat blocks 507 set at the top of the second bracket 3. The two sets of flat blocks 507 are located at the front and rear ends of the top of the film. The film is passed through the first roller 602 set on the right side of the second bracket 3, then through the bottom of the second roller 702 set at the top of the first bracket 2, and then through the bottom of the two sets of flat blocks 507 set at the top of the first bracket 2.

[0028] Two sets of connecting motors 501 are installed on the top of the second bracket 3. The connecting motors 501 drive the connecting rod 502 to rotate, the connecting rod 502 drives the connecting plate 503 to rotate, the connecting plate 503 drives the connecting slide plate 506 to rotate, and the connecting slide plate 506 drives the flattening block 507 to rotate. During this process, the connecting slide plate 506 moves downward under the elastic force of the connecting spring 505. The connecting slide plate 506 drives the flattening block 507 to move downward, so that the flattening block 507 applies pressure to the film when it rotates. The flattening block 507 is cross-shaped. The two sets of flattening blocks 507 rotate on the front and rear sides of the top of the film respectively, pushing the folded position of the film back to its original position, thereby flattening one side of the film. The two sets of connecting motors 501 installed on the top of the first bracket 2 drive the two sets of flattening blocks 507 to flatten the other two sides of the film.

[0029] After passing through the first roller 602 located on the left side of the first support 2, the film passes through the bottom of the second roller 702 located on the top left side of the base plate 1 and the bottom of the pressing plate 903. After passing through the bottom of the detection roller 124, the film is connected to the winding device. The two sets of support slide plates 804 move downward under the elastic force of the two sets of support springs 805. The two sets of support slide plates 804 drive the pressing top plate 901 to move downward. The pressing top plate 901 drives the two sets of pressing rods 902 to move downward. The pressing rods 902 drive the pressing plate 903 to move downward. The pressing plate 903 matches the base plate 1. The film is pressed flat, and the distance sensor 122 is connected to the external controller. At the same time, the film passes through the detection roller 124. When the film thickness is inconsistent, the detection roller 124 will drive the two sets of detection rods 125 to slide up and down in the two sets of detection slots 126 respectively. The distance sensor 122 can measure the distance the detection roller 124 moves up and down. By setting multiple sets of distance sensors 122 to compare the data, the thickness of the plastic film can be determined to be within the required range. When the data is unqualified, the distance sensor 122 sends a signal to the controller for warning.

[0030] The input terminals of all electrical equipment in this device are electrically connected to an external power source.

[0031] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A device for detecting the surface flatness of polypropylene film, comprising a base plate (1). Its features are: The top of the base plate (1) is fixedly connected to a first bracket (2), and the top of the first bracket (2) is fixedly connected to a second bracket (3). The first bracket (2) and the second bracket (3) are both provided with leveling components. The leveling components include a control mechanism (4) and two sets of connecting mechanisms (5). The left side of the first bracket (2) and the right side of the second bracket (3) are both provided with a first roller group (6). The top right side of the first bracket (2) and the top left side of the base plate (1) are both provided with a second roller group (7). The top right side of the base plate (1) is provided with a support mechanism (8). The support mechanism (8) is provided with a pressing mechanism (9). The right side of the base plate (1) is fixedly connected to an installation plate (10). The top of the installation plate (10) is provided with a fixing frame (11). The bottom of the fixing frame (11) is provided with multiple sets of detection mechanisms (12). The flattening component is used to flatten the corner folds of the film, the pressing mechanism (9) is used to press and limit the film, and the detection mechanism (12) is used to detect the flatness of the film.

2. The polypropylene film surface flatness detection device according to claim 1, characterized in that: The first roller group (6) includes two sets of first roller plates (601). The two sets of first roller plates (601) are respectively fixedly installed on the front and rear sides of the right side of the second bracket (3). The first roller (602) is rotatably connected to the side of the two sets of first roller plates (601) that are close to each other.

3. The polypropylene film surface flatness detection device according to claim 1, characterized in that: The second roller group (7) includes two sets of second roller plates (701). The two sets of second roller plates (701) are respectively fixedly installed on the front and rear sides of the top right of the first bracket (2). The two sets of second roller plates (701) are rotatably connected to the side of each other that is close to each other.

4. The polypropylene film surface flatness detection device according to claim 1, characterized in that: The control mechanism (4) includes a control side plate (401), which is fixedly installed behind the first bracket (2). A control plate (402) is fixedly connected to the top left side of the control side plate (401). A control groove (403) is provided at the bottom of the control plate (402). A control motor (404) is provided on the left side of the inner cavity of the control groove (403). A control screw (405) is provided at the power output end on the right side of the control motor (404). The control screw (405) is a forward and reverse screw. Two sets of control slide plates (406) are screwed onto the control screw (405). The two sets of connecting mechanisms (5) are respectively installed at the bottom of the two sets of control slide plates (406).

5. The polypropylene film surface flatness detection device according to claim 4, characterized in that: The connecting mechanism (5) includes a connecting motor (501), which is fixedly mounted on the bottom of the control slide plate (406). The bottom power output end of the connecting motor (501) is provided with a connecting rod (502). The bottom of the connecting rod (502) is fixedly connected to a connecting plate (503). The bottom of the connecting plate (503) is provided with a connecting groove (504). The top of the inner cavity of the connecting groove (504) is fixedly connected to a connecting spring (505). The bottom of the connecting spring (505) is fixedly connected to a connecting slide plate (506). The bottom of the connecting slide plate (506) is fixedly connected to a flat block (507).

6. The polypropylene film surface flatness detection device according to claim 1, characterized in that: The support mechanism (8) includes two sets of support plates (801). The two sets of support plates (801) are respectively set on the front and rear sides of the top right side of the bottom plate (1). The two sets of support plates (801) are provided with support grooves (802) on the side that is close to each other. The inner cavity of the two sets of support grooves (802) is provided with support rods (803). The outer side of the two sets of support rods (803) is slidably connected with support slide plates (804). The top of the two sets of support slide plates (804) is provided with support springs (805). The two sets of support springs (805) are respectively sleeved on the outer side of the two sets of support rods (803). The pressing mechanism (9) includes a pressing top plate (901).

7. The device for detecting the surface flatness of a polypropylene film according to claim 6, characterized in that: The left and right sides of the pressing top plate (901) are fixedly connected to two sets of support slide plates (804), and the bottom left and right sides of the pressing top plate (901) are fixedly connected to pressing rods (902), and the bottom of the two sets of pressing rods (902) are fixedly connected to pressing plates (903).

8. The polypropylene film surface flatness detection device according to claim 1, characterized in that: The fixing frame (11) includes two sets of fixing side plates (111). The two sets of fixing side plates (111) are respectively fixedly installed on the top left and right sides of the mounting plate (10). The top plate of the two sets of fixing side plates (111) that are close to each other is fixedly connected to a fixing plate (112). The detection mechanism (12) includes a detection top plate (121).

9. The device for detecting the surface flatness of a polypropylene film according to claim 8, characterized in that: The detection top plate (121) is fixedly installed at the bottom of the fixed plate (112). A distance sensor (122) is fixedly installed at the bottom of the detection top plate (121). Detection side plates (123) are fixedly connected to the left and right sides of the bottom of the detection top plate (121). Detection rollers (124) are provided in front of the two sets of detection side plates (123). Detection rods (125) are rotatably connected to the left and right sides of the detection rollers (124). Detection grooves (126) that are adapted to the two sets of detection rods (125) are respectively opened on the side of the two sets of detection side plates (123) that are close to each other. The two sets of detection rods (125) are slidably connected in the two sets of detection grooves (126).

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