Broken hole detection device of film drawing machine for PTFE air purification film

Abstract

The utility model discloses a broken hole detection device of a film drawing machine for a PTFE (Polytetrafluoroethylene) air purification film, which comprises a film drawing machine body provided with a film material conveying mechanism, and the film material is placed on the film material conveying mechanism; the bearing rod is arranged on the outer side of the membrane material conveying mechanism; the detection assembly comprises a supporting frame and a correlation light curtain, the supporting frame comprises a first supporting rod, a second supporting rod and a supporting beam, the first supporting rod and the second supporting rod are arranged on the two sides of the membrane material conveying mechanism correspondingly, and the bottom of the first supporting rod is fixedly installed on a bearing rod; one end of the supporting beam is rotatably installed on the first supporting rod, the other opposite end of the supporting beam is installed on the second supporting rod, the correlation light curtain comprises a light curtain emitting end and a light curtain receiving end, the light curtain emitting end is fixedly installed on the supporting beam, and the light curtain receiving end is arranged below the membrane material. Compared with the prior art, the utility model solves the problem of high hole detection cost after the membrane material is stretched by a membrane drawing machine in the production process of the PTFE air purification membrane.

Description

Technical Field

[0001] The utility model relates to the technical field of PTFE air purification film production, in particular to a hole detection device for a film pulling machine for PTFE air purification films. Background Technique

[0002] An air purification film is made of polytetrafluoroethylene as a raw material, and after being expanded, calendered, and biaxially stretched, it forms a film with micropores. During the processing of film materials such as PTFE air purification films, the film materials are usually stretched by a film pulling machine. For example, Chinese Patent CN107415212B discloses an improved film pulling machine for ultra-thin PVC films, which includes a frame. Above the frame, there are a film clamping mechanism and a left-right moving mechanism. The film clamping mechanism clamps both sides of the PVC film, and the left-right moving mechanism drives the film clamping mechanism to move to both sides. The film clamping mechanism includes clamping ends on the left and right sides of the PVC film. Each clamping end includes an upper clamping member and a lower clamping member. Belt conveyor wheels are provided at both ends of the upper clamping member and the lower clamping member, and belts are wound around the belt conveyor wheels. A number of pressing wheels are correspondingly provided on the belt on the lower end of the upper clamping member and the upper end of the lower clamping member. The film clamping mechanism also includes an up-and-down moving device for the upper clamping member.

[0003] During the production of PTFE air purification films, holes are likely to occur after the film materials are stretched. Currently, holes are mainly identified manually or by machine vision. However, manual identification has low efficiency and high costs, and machine vision identification is prone to omissions and high costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hole detection device for a film pulling machine for PTFE air purification films to solve the problem of high hole detection costs after the film materials are stretched by the film pulling machine during the production of PTFE air purification films.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions: A hole detection device for a film pulling machine for PTFE air purification films, including:

[0006] A film pulling machine body, on which a film material conveying mechanism is arranged, and the film material is placed on the film material conveying mechanism;

[0007] A supporting rod, which is arranged outside the film material conveying mechanism;

[0008] Detection component, which includes a support frame and an opposed light curtain. The support frame includes a first support rod, a second support rod and a support beam. The first support rod and the second support rod are respectively arranged on both sides of the film conveying mechanism. The bottom of the first support rod is fixedly installed on the supporting rod. One end of the support beam is rotatably installed on the first support rod, and the opposite end is installed on the second support rod. The opposed light curtain includes a light curtain emission end and a light curtain receiving end. The light curtain emission end is fixedly installed on the support beam, and the light curtain receiving end is arranged below the film.

[0009] As a further description of the above technical solution:

[0010] The first support rod includes a lower rod body and an upper rod body. The upper rod body is threadedly connected to the lower rod body, and the support beam is rotatably installed on the upper rod body.

[0011] As a further description of the above technical solution:

[0012] A first waist-shaped hole is provided at the end of the support beam.

[0013] As a further description of the above technical solution:

[0014] A first connection base plate is provided at the bottom of the first support rod, and a second waist-shaped hole is provided on the first connection base plate.

[0015] As a further description of the above technical solution:

[0016] The first connection base plate is detachably installed on the first support rod.

[0017] As a further description of the above technical solution:

[0018] Insertion columns are provided on the first connection base plate, and insertion blind holes matching the shapes of the insertion columns are provided at the bottom of the first support rod.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are:

[0020] 1. In the present utility model, the stretched film on the film stretching machine body is conveyed through the film conveying mechanism. The opposed light curtain on the support frame can effectively detect the film conveyed below it, and effectively detect whether there are holes.

[0021] 2. In the present utility model, when the opposed light curtain is installed on the support frame, since one end of the support beam is rotatably installed on the first support rod, the opposed light curtain can be rotated to adjust the inclination angle, so that the opposed light curtain can fully adapt to and cover films of different widths. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of a hole detection device for a film pulling machine for PTFE air purification film.

[0024] Figure 2 It is a schematic structural diagram of a detection component in a hole detection device for a film pulling machine for PTFE air purification film.

[0025] Legend description:

[0026] 1. Film pulling machine body; 11. Film material conveying mechanism; 2. Supporting rod; 3. Support frame; 31. First support rod; 311. Lower rod body; 312. Upper rod body; 32. Support beam; 321. First waist-shaped hole; 33. First connecting bottom plate; 331. Second waist-shaped hole; 332. Insertion column; 4. Light curtain emitting end; 41. Light curtain receiving end. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figure 1 —2, the present utility model provides a technical solution: a hole detection device for a film pulling machine for PTFE air purification film, including:

[0030] A film pulling machine body 1, on which a film material conveying mechanism 11 is provided, and the film material is placed on the film material conveying mechanism 11;

[0031] A supporting rod 2, which is arranged outside the film material conveying mechanism 11;

[0032] A detection component, which includes a support frame 3 and an opposed light curtain. The support frame 3 includes a first support rod 31, a second support rod, and a support beam 32. The first support rod 31 and the second support rod are respectively arranged on both sides of the film material conveying mechanism 11, and the bottom of the first support rod 31 is fixedly installed on the supporting rod 2.

[0033] One end of the support beam 32 is rotatably installed on the first support rod 31, and the opposite end is installed on the second support rod. The opposed light curtain includes a light curtain emitting end 4 and a light curtain receiving end 41. The light curtain emitting end 4 is fixedly installed on the support beam 32, and the light curtain receiving end 41 is arranged below the film material. The structures and installation methods of the first support rod 31 and the second support rod are the same, except that they are arranged at both ends of the support beam 32.

[0034] The first support rod 31 includes a lower rod body 311 and an upper rod body 312. The upper rod body 312 is threadedly connected to the lower rod body 311, and the support beam 32 is rotatably installed on the upper rod body 312. The first support rod 31 can adjust the overall height by rotating the upper rod body 312, so as to adjust the installation height of the support beam 32 and the light curtain emitting end 4 according to requirements.

[0035] A first waist-shaped hole 321 is provided at the end of the support beam 32. When the support beam 32 is installed on the second support rod, the screw on the second support rod passes through the first waist-shaped hole 321 and is fixed by a nut, which is convenient for fixing the support beam 32 to the second support rod after rotating and adjusting the support beam 32.

[0036] A first connection bottom plate 33 is provided at the bottom of the first support rod 31, and a second waist-shaped hole 331 is provided on the first connection bottom plate 33. The first support rod 31 is fixedly installed on the support rod 2 through the first connection bottom plate 33, and the second waist-shaped hole 331 is convenient for adjusting the installation position of the first support rod 31.

[0037] The first connection bottom plate 33 is detachably installed on the first support rod 31. Specifically, insertion columns 332 are provided on the first connection bottom plate 33, and insertion blind holes matching the shapes of the insertion columns 332 are provided at the bottom of the first support rod 31 to realize the quick-release installation of the first connection bottom plate 33 and the first support rod 31, which is convenient for disassembling and adjusting the opposed light curtain.

[0038] Working principle: The stretched film material on the film stretching machine body 1 is conveyed through the film material conveying mechanism 11. The opposed light curtain on the support frame 3 can effectively detect the film material conveyed below it to effectively detect whether there are holes. When the opposed light curtain is installed on the support frame 3, since one end of the support beam 32 is rotatably installed on the first support rod 31, the opposed light curtain can be rotated to adjust the tilt angle, so that the opposed light curtain can fully adapt to and cover film materials of different widths.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A hole detection device for a film drawing machine for a PTFE air purification membrane, characterized in that: include: The film drawing machine body is provided with a film material conveying mechanism, and the film material is placed on the film material conveying mechanism; A supporting rod, which is arranged outside the film material conveying mechanism; A detection component includes a support frame and a reflected light curtain, wherein the support frame includes a first support rod, a second support rod and a support beam, wherein the first support rod and the second support rod are respectively arranged on both sides of the film material conveying mechanism, the bottom of the first support rod is fixedly mounted on the supporting rod, one end of the support beam is rotatably mounted on the first support rod, and the other end opposite to the support rod is mounted on the second support rod, and the reflected light curtain includes a light curtain transmitting end and a light curtain receiving end, wherein the light curtain transmitting end is fixedly mounted on the support beam, and the light curtain receiving end is arranged below the film material.

2. The hole detection device for a PTFE air purification membrane film drawing machine according to claim 1, characterized in that: The first support rod comprises a lower rod body and an upper rod body, the upper rod body is threadedly connected to the lower rod body, and the support beam is rotatably mounted on the upper rod body.

3. The hole detection device for a PTFE air purification membrane film drawing machine according to claim 1, characterized in that: The end of the support beam is provided with a first waist-shaped hole.

4. The hole detection device for a PTFE air purification membrane film drawing machine according to claim 1, characterized in that: A first connecting bottom plate is disposed at the bottom of the first supporting rod, and a second waist-shaped hole is disposed on the first connecting bottom plate.

5. The hole detection device for a PTFE air purification membrane film drawing machine according to claim 4, characterized in that: The first connecting base plate is detachably mounted on the first supporting rod.

6. The hole detection device for a PTFE air purification membrane film drawing machine according to claim 5, characterized in that: The first connecting bottom plate is provided with a plug-in column, and the bottom of the first supporting rod is provided with a plug-in blind hole whose shape matches that of the plug-in column.

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