A composite printing press film thickness measurement structure

Abstract

The present application belongs to the technical field of film thickness measurement, and particularly relates to a film thickness measurement structure of a composite printing machine, which comprises two film-penetrating frames arranged in front and back, the lower ends of the two film-penetrating frames are supported by two supporting rods, the opposite sides of the two film-penetrating frames are fixedly connected with two slide rails arranged in up and down, four moving assemblies are arranged between the two film-penetrating frames in a rectangular distribution, a thickness measurement element is installed on each moving assembly, and each two corresponding thickness measurement elements form an X-ray thickness measurement assembly, and the film penetrates through the two film-penetrating frames and the two X-ray thickness measurement assemblies at the same time. The film thickness measurement structure has the advantages that the film thickness measurement structure can perform thickness measurement on the film in two S-shaped measurement tracks on the film printing production line, improves the measurement accuracy, and is convenient for adjusting the measurement interval and suitable for films with different widths.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film thickness measurement, and particularly relates to a film thickness measurement structure of a composite printing machine. BACKGROUND

[0002] The composite printing machine has high requirements for the uniformity of film thickness when performing composite printing on the film, and needs to ensure that the film surface is flat and the thickness deviation is small. Therefore, the film needs to be measured in thickness before printing to ensure that the film is effectively printed by the printing machine.

[0003] The existing patent number CN213748315U discloses a BOPP film thickness detection device, which comprises a rectangular frame, two reciprocating lead screws are symmetrically connected to the inner walls of the left and right opposite sides of the rectangular frame through ball bearings, the left end of the reciprocating lead screw extends out of the rectangular frame and is fixedly connected with a driven bevel gear, a double-shaft motor is fixedly arranged on the left side outer wall of the rectangular frame, the upper and lower end output shafts of the double-shaft motor are both fixedly connected with a rotating rod, the end of the rotating rod away from the double-shaft motor is fixedly connected with a driving bevel gear meshing with the driven bevel gear, the rod wall of the reciprocating lead screw is threadedly sleeved with a driving block, the opposite sides of the two driving blocks are both fixedly connected with a fixed plate, the surface of the fixed plate is fixedly connected with a connecting plate, and the opposite sides of the two connecting plates are respectively fixedly connected with a beta ray generator and a beta ray receiver.

[0004] Although the above detection device can realize accurate detection of the film with high detection efficiency, the beta ray generator and the beta ray receiver need to be synchronously moved back and forth by rotating the reciprocating lead screw during measurement, and the reciprocating range is the same as the length of the screw thread on the reciprocating lead screw, so that the measurement range cannot be adjusted. When detecting a film with a small width, there will be a redundant measurement gap, which affects the measurement efficiency. In addition, the reciprocating lead screw has high requirements for the working environment, and after adhering dust, it cannot be effectively driven.

[0005] To solve the above problems, we propose a film thickness measurement structure of a composite printing machine. SUMMARY

[0006] The purpose of the present application is to solve the problems in the background art and propose a film thickness measurement structure of a composite printing machine.

[0007] In order to achieve the above object, the technical scheme adopted by the present application is as follows: A composite printing machine film thickness measurement structure comprises two front and rear spaced film passing frames, the lower ends of the two film passing frames are supported by two support rods, the opposite sides of the two film passing frames are fixedly connected with two upper and lower spaced slide rails, four moving assemblies distributed in a rectangular shape are arranged between the two film passing frames, a thickness measuring element is installed on each moving assembly, and each two upper and lower corresponding thickness measuring elements constitute an X-ray thickness measuring assembly; the film passes through the two X-ray thickness measuring assemblies while passing through the two film passing frames; horizontal grooves are formed in the upper and lower ends of the two film passing frames, two left and right distributed slide rods are slidably connected in each groove, and the ends of the slide rods away from the grooves are fixedly connected with the corresponding moving assemblies through connecting plates.

[0008] The lower ends of the two connecting plates located at the lower end of the front film passing frame are fixedly connected with vertical frames, a bottom plate is arranged in front of the two vertical frames, a reciprocating driving mechanism is arranged on the bottom plate, and the reciprocating driving mechanism drives the two vertical frames to perform relative reciprocating motion, thereby driving the two X-ray thickness measuring assemblies to perform relative reciprocating motion.

[0009] In the composite printing machine film thickness measurement structure, the moving assembly comprises two front and rear symmetrically arranged moving plates, the ends of the two moving plates away from each other are slidably connected with the corresponding two slide rails at different heights, and the ends of the two moving plates close to each other are fixedly connected with an installation plate.

[0010] In the composite printing machine film thickness measurement structure, the left and right sides of the rear film passing frame are provided with connecting frames, and the two ends of the two connecting frames close to the film passing frame are fixedly connected with the two connecting plates on the same side.

[0011] In the composite printing machine film thickness measurement structure, a lifting cylinder is vertically penetrated and slidably connected on each installation plate, the upper end of the lifting cylinder located at the upper side is fixedly connected with the corresponding thickness measuring element, a ray emitting end penetrating the lifting cylinder is arranged on the thickness measuring element located at the upper side, the ray emitting end is arranged downward, the lower end of the lifting cylinder located at the lower side is fixedly connected with the corresponding thickness measuring element, a ray receiving end penetrating the lifting cylinder is arranged on the thickness measuring element located at the lower side, the ray receiving end is arranged upward and corresponds in position to the ray emitting end located at the upper side, an adjusting plate is fixedly connected on one side of each thickness measuring element, a first adjusting screw is vertically penetrated and threadedly connected on the adjusting plate, and the first adjusting screw is rotationally connected with the corresponding installation plate.

[0012] In the composite printing machine film thickness measurement structure, two upper and lower spaced guide rollers are installed at the ends of the two film passing frames away from each other.

[0013] In the film thickness measurement structure of the composite printing machine, the reciprocating driving mechanism comprises two support frame plates arranged on the bottom plate, rotating shaft rods are rotatably connected to the rear ends of the support frame plates, rotating discs are coaxially and fixedly connected to the rear ends of the rotating shaft rods, push columns are arranged at the rear ends of the rotating discs, the push columns are slidably arranged in the vertical frames, and the rotating shaft rods are drivingly connected through the transmission toothed belt.

[0014] In the film thickness measurement structure of the composite printing machine, the reciprocating driving mechanism comprises two support frame plates arranged on the bottom plate, rotating shaft rods are rotatably connected to the rear ends of the support frame plates, rotating discs are coaxially and fixedly connected to the rear ends of the rotating shaft rods, push columns are arranged at the rear ends of the rotating discs, the push columns are slidably arranged in the vertical frames, and the rotating shaft rods are drivingly connected through the transmission toothed belt.

[0015] Compared with the prior art, the film thickness measurement structure of the composite printing machine has the following advantages:

[0016] By arranging the two X-ray thickness measurement assemblies and the reciprocating driving mechanism, the reciprocating driving mechanism drives the two vertical frames to reciprocate relatively, so as to drive the two X-ray thickness measurement assemblies to reciprocate relatively.

[0017] The film thickness measurement structure of the composite printing machine can be directly applied to film printing production, and the film does not need to be cut for sampling measurement.

[0018] By setting the second motor, the bidirectional threaded rod, the second motor drives the bidirectional threaded rod to rotate, and the two support frame plates can be relatively moved, so that the distance between the two rotating discs is adjusted, and when the distance between the two rotating discs is changed, the position of the measurement interval of the corresponding X-ray thickness measuring assembly is changed, so that the position of the measurement interval can be adjusted according to the width of the film.

[0019] By setting the second adjusting screw, the second adjusting screw is rotated to drive the push column to move along the moving groove, so that the position of the push column on the rotating disc is adjusted, the distance between the push column and the center of the rotating disc is smaller, and the measurement interval of the corresponding X-ray thickness measuring assembly is smaller, and vice versa, so that the measurement interval of the X-ray thickness measuring assembly can be easily adjusted according to the actual measurement requirement, so that the thickness of the film with different width can be measured more effectively, different width films are adapted, and measurement spare is avoided, and the measurement efficiency is ensured.

[0020] In summary, the film thickness measuring structure of the composite printing machine can measure the thickness of the film on the film printing production line with two S-shaped measurement tracks, improve the measurement accuracy, and conveniently adjust the measurement interval, and is suitable for films with different widths. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A perspective view of a film thickness measuring structure of a composite printing machine is provided.

[0022] Figure 2 A perspective view of a film thickness measuring structure of a composite printing machine is provided.

[0023] Figure 3 A connection structure diagram of a film penetrating frame and a moving assembly in a film thickness measuring structure of a composite printing machine is provided.

[0024] Figure 4 A connection structure diagram of a film penetrating frame and a moving assembly in a film thickness measuring structure of a composite printing machine is provided.

[0025] Figure 5 A connection structure diagram of a film thickness measuring element and a mounting plate in a film thickness measuring structure of a composite printing machine is provided.

[0026] Figure 6 A perspective view of a reciprocating driving mechanism in a film thickness measuring structure of a composite printing machine is provided.

[0027] Figure 7 A perspective view of a reciprocating driving mechanism in a film thickness measuring structure of a composite printing machine is provided.

[0028] Figure 8 A Figure 7An enlarged structural schematic view at A in the middle.

[0029] In the figure: 1 film passing frame, 2 support rod, 3 sliding rail, 4 moving plate, 5 mounting plate, 6 sliding groove, 7 sliding rod, 8 connecting plate, 9 connecting frame, 10 lifting cylinder, 11 thickness measuring element, 12 adjusting plate, 13 first adjusting screw, 14 guide roller, 15 bottom plate, 16 support frame plate, 17 rotating disc, 18 pushing column, 19 vertical frame, 20 transmission toothed belt, 21 first motor, 22 moving groove, 23 end plate, 24 second adjusting screw, 25 rotating block, 26 bidirectional threaded rod, 27 threaded sleeve block, 28 second motor, 29 electric telescopic rod, 30 vertical plate, 31 belt pressing wheel. DETAILED DESCRIPTION

[0030] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0031] Reference Figures 1-8 A film thickness measurement structure of a composite printing machine includes two film passing frames 1 arranged in front and back, and the lower ends of the two film passing frames 1 are supported by two support rods 2. The ends of the two film passing frames 1 away from each other are each provided with two guide rollers 14 arranged in an upper and lower manner. The upper arrangement facilitates the application of the structure in the film composite printing work of the printing machine. The film in the conveying process directly passes through the two film passing frames 1 under the guidance of the two pairs of guide rollers 14, and then facilitates the thickness measurement work between the two film passing frames 1.

[0032] The opposite sides of the two upper film passing frames 1 are each fixedly connected with two sliding rails 3 arranged in an upper and lower manner. Four moving assemblies arranged in a rectangular manner are arranged between the two film passing frames 1. The moving assembly includes two moving plates 4 arranged in a front and back symmetry manner. The ends of the two moving plates 4 away from each other are respectively slidably connected to the two sliding rails 3 at the corresponding heights. The ends of the two moving plates 4 close to each other are commonly fixedly connected with a mounting plate 5. The moving assembly is arranged to move transversely between the two film passing frames 1 through the sliding rails 3.

[0033] The thickness measuring element 11 is arranged on each moving assembly. Every two corresponding thickness measuring elements 11 arranged in an upper and lower manner constitute an X-ray thickness measuring assembly. The X-ray thickness measuring assembly is an X-ray thickness gauge, which is a prior art. The film thickness is calculated by the attenuation of the X-ray after penetrating the film. The penetrating force is strong, and the thickness of each layer of the multi-layer composite film can be measured. It is suitable for high-speed production lines of film printing.

[0034] The film passes through two X-ray thickness measuring assemblies while passing through the two film passing frames 1, so that the X-ray thickness measuring assemblies can measure the thickness of the film. The lifting cylinders 10 are vertically penetrated and slidingly connected on each mounting plate 5, the upper end of the upper lifting cylinder 10 is fixedly connected with the corresponding thickness measuring element 11, the upper thickness measuring element 11 is provided with a ray emitting end penetrating the lifting cylinder 10, the ray emitting end is downwardly arranged, the lower end of the lower lifting cylinder 10 is fixedly connected with the corresponding thickness measuring element 11, the lower thickness measuring element 11 is provided with a ray receiving end penetrating the lifting cylinder 10, the ray receiving end is upwardly arranged and corresponds to the position of the upper ray emitting end, the ray emitting end emits X-rays, and the ray receiving end is used for receiving the X-rays emitted by the ray emitting end, so as to obtain the thickness of the film passing through. Each thickness measuring element 11 is fixedly connected with an adjusting plate 12, the first adjusting screw 13 is vertically penetrated and threadedly connected on the adjusting plate 12, the first adjusting screw 13 is rotationally connected with the corresponding mounting plate 5, the position height of the corresponding thickness measuring element 11 can be adjusted by rotating the first adjusting screw 13, so as to adjust the distance between the ray emitting end and the ray receiving end, and the debugging work of the X-ray thickness measuring assembly is facilitated.

[0035] The two film passing frames 1 are provided with sliding grooves 6 at the upper and lower ends, the two sliding grooves 6 are slidingly connected with two sliding rods 7 distributed on the left and right sides, the ends of the sliding rods 7 away from the sliding grooves 6 are fixedly connected with the corresponding moving assemblies through the connecting plates 8, the sliding grooves 6, the sliding rods 7 and the connecting plates 8 are provided to limit the movement range of the moving assemblies, and when the moving assemblies move, the corresponding two connecting plates 8 and the sliding rods 7 also move. The film passing frame 1 located at the rear is provided with connecting frames 9 on the left and right sides, the two connecting frames 9 are fixedly connected with the two film passing frames 8 on the same side respectively, and the two connecting frames 9 are provided to enable the two moving assemblies corresponding to the upper and lower sides to move synchronously.

[0036] Through the arrangement of the connecting frames 9, the two moving assemblies located on the same side move synchronously, and then the corresponding ray emitting end and the ray receiving end can also move synchronously in the corresponding state, so that the thickness measurement state is still maintained during the movement.

[0037] The lower ends of the two connecting plates 8 at the lower end of the film passing frame 1 located at the front are fixedly connected with vertical frames 19, the front of the two vertical frames 19 is provided with a bottom plate 15, the bottom plate 15 is provided with a reciprocating driving mechanism, the reciprocating driving mechanism drives the two vertical frames 19 to move reciprocally, so as to drive the two X-ray thickness measuring assemblies to move reciprocally, when the two X-ray thickness measuring assemblies move reciprocally on the film, two S-shaped measurement tracks can be measured on the film in the conveying process, compared with the existing straight measurement track, the S-shaped measurement track can measure the film of any width to the maximum extent, the measurement interval coverage is larger, and the measurement result is more accurate.

[0038] The reciprocating driving mechanism comprises two support frame plates 16 arranged on the bottom plate 15, the rear end of each support frame plate 16 is rotationally connected with a rotating shaft rod, the rear end of each rotating shaft rod is coaxially fixedly connected with a rotating disc 17, the rear end of each rotating disc 17 is provided with a pushing column 18, the two pushing columns 18 are respectively slidably arranged in two vertical frames 19, and the two rotating shaft rods are drivingly connected through a transmission tooth belt 20. The front end of one support frame plate 16 is fixedly provided with a first motor 21 for driving the rotating shaft rod to rotate. The first motor 21 can simultaneously drive the two rotating discs 17 to rotate under the driving of the transmission tooth belt 20. In the synchronous rotation process, the pushing column 18 can drive the two vertical frames 19 to reciprocatingly move left and right in the diameter interval of the corresponding rotating disc 17, thereby realizing the relative reciprocating movement of the two X-ray thickness measuring assemblies, and the relative reciprocating movement of the two X-ray thickness measuring assemblies is realized, and the measurement work of forming two S-shaped measurement tracks on the surface of the film is realized.

[0039] The two support frame plates 16 are transversely slidably connected with the bottom plate 15, the bottom plate 15 is fixedly connected with two vertically arranged vertical plates, the two vertical plates are jointly rotationally connected with a bidirectional threaded rod 26, the bidirectional threaded rod 26 is threadedly sleeved with two symmetrically distributed threaded sleeve blocks 27, the two threaded sleeve blocks 27 are respectively fixedly connected with the front ends of the two support frame plates 16, and the bottom plate 15 is fixedly provided with a second motor 28 for driving the bidirectional threaded rod 26 to rotate. The relative movement of the two support frame plates 16 can be realized by driving the bidirectional threaded rod 26 to rotate through the second motor 28, so as to adjust the interval size of the two rotating discs 17. When the interval size of the two rotating discs 17 changes, the position of the measurement interval of the corresponding X-ray thickness measuring assembly also changes, so that the position of the measurement interval can be adjusted according to the width of the film.

[0040] The front end of the film-penetrating frame 1 is fixedly provided with a vertically arranged electric telescopic rod 29, the telescopic end of the electric telescopic rod 29 is fixedly connected with a vertical plate 30, the rear end of the vertical plate 30 is rotationally connected with two belt pressing wheels 31, the two belt pressing wheels 31 are respectively in rolling contact with the upper end faces of the upper and lower belts of the transmission tooth belt 20, and the electric telescopic rod 29 can drive the vertical plate 30 to vertically move, thereby driving the two belt pressing wheels 31 to move. The two belt pressing wheels 31 press the transmission tooth belt 20, so that the transmission tooth belt 20 is effectively driven by the two rotating shaft rods. When the interval of the two rotating discs 17 changes, the electric telescopic rod 29 controls the belt pressing wheels 31 to move, so that the transmission tooth belt 20 always maintains a tensioned transmission state.

[0041] The rotating disc 17 rear end and in the position of the push column 18 are both provided with a moving groove 22 arranged downward to the center of the rotating disc 17, the moving groove 22 is slidably connected with a sliding block, the sliding block is fixedly connected with the push column 18, the rotating disc 17 and in the position of both ends of the moving groove 22 are both fixedly connected with an end plate 23, the two end plates 23 are jointly rotatably connected with a second adjusting screw 24, the second adjusting screw 24 penetrates through the corresponding push column 18 and is threadedly connected with the push column 18, one end of the second adjusting screw 24 is coaxially fixedly connected with a rotating block 25, the push column 18 can be driven to move along the moving groove 22 by rotating the second adjusting screw 24, so as to adjust the position of the push column 18 on the rotating disc 17, the smaller the distance between the push column 18 and the center of the rotating disc 17, the smaller the measurement interval of the corresponding X-ray thickness measuring assembly, and vice versa. Then, according to the actual measurement needs, the measurement interval of the X-ray thickness measuring assembly can be easily adjusted, so that the thickness measurement work of the film with different width sizes can be more effectively carried out, the film with different width sizes can be adapted, the measurement spare can be avoided, and the measurement efficiency can be ensured.

[0042] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A composite printing press film thickness measuring structure comprising two front and rear spaced apart film passing frames (1), characterized in that, Both lower ends of the membrane passing frames (1) are supported by two supporting rods (2), both opposite sides of the membrane passing frames (1) are fixedly connected with two slide rails (3) arranged at intervals, four moving assemblies arranged in a rectangular shape are arranged between the two membrane passing frames (1), a thickness measuring element (11) is arranged on each moving assembly, and each two corresponding thickness measuring elements (11) constitute an X-ray thickness measuring assembly, the membrane passes through the two X-ray thickness measuring assemblies while passing through the two membrane passing frames (1), transversely arranged grooves (6) are formed in the upper and lower ends of the two membrane passing frames (1), two slide rods (7) arranged in a left-right direction are slidably connected in each groove (6), and the ends of the slide rods (7) away from the grooves (6) are fixedly connected with the corresponding moving assemblies through connecting plates (8); The lower ends of the two connecting plates (8) located at the lower end of the front membrane passing frame (1) are fixedly connected with vertical frames (19), a bottom plate (15) is arranged in front of the two vertical frames (19), a reciprocating driving mechanism is arranged on the bottom plate (15), and the reciprocating driving mechanism drives the two vertical frames (19) to reciprocate relative to each other, so as to drive the two X-ray thickness measuring assemblies to reciprocate relative to each other; The reciprocating driving mechanism comprises two support frame plates (16) arranged on the bottom plate (15), rotating shaft rods are rotatably connected to the rear ends of the support frame plates (16), rotating discs (17) are coaxially and fixedly connected to the rear ends of the two rotating shaft rods, push rods (18) are arranged at the rear ends of the two rotating discs (17), the two push rods (18) are slidably arranged in the two vertical frames (19), and the two rotating shaft rods are connected through a transmission tooth belt (20). The front end of one of the support frame plates (16) is fixedly connected with a first motor (21) for driving the rotating shaft rod to rotate.

2. A composite printer film thickness measurement structure according to claim 1, wherein, The moving assembly comprises two moving plates (4) arranged in a front-rear symmetry, the ends of the two moving plates (4) away from each other are slidably connected to the two slide rails (3) at the corresponding heights, and the ends of the two moving plates (4) close to each other are fixedly connected with a mounting plate (5).

3. A composite printer film thickness measurement structure according to claim 1, wherein, The membrane passing frames (1) located at the rear are provided with connecting frames (9) on the left and right sides, and the two ends of the two connecting frames (9) close to the membrane passing frames (1) are fixedly connected with the two connecting plates (8) on the same side.

4. A composite printer film thickness measurement structure according to claim 2, wherein, A lifting cylinder (10) is vertically penetrated and slidably connected on each of the mounting plates (5), the upper end of the lifting cylinder (10) is fixedly connected with the corresponding thickness measuring element (11), the upper end of the thickness measuring element (11) is provided with a ray emitting end penetrating the lifting cylinder (10), the ray emitting end is downwardly arranged, the lower end of the lifting cylinder (10) is fixedly connected with the corresponding thickness measuring element (11), the lower end of the thickness measuring element (11) is provided with a ray receiving end penetrating the lifting cylinder (10), the ray receiving end is upwardly arranged and corresponds to the position of the ray emitting end, one side of each of the thickness measuring elements (11) is fixedly connected with an adjusting plate (12), the adjusting plate (12) is vertically penetrated and threadedly connected with a first adjusting screw (13), and the first adjusting screw (13) is rotationally connected with the corresponding mounting plate (5).

5. A composite printer film thickness measurement structure according to claim 1, wherein, Two of the film penetrating frames (1) are provided with two guide rollers (14) which are arranged in an upper and lower interval at the far ends of the film penetrating frames (1).

6. A composite printer film thickness measurement structure according to claim 1, wherein, The two support frame plates (16) are transversely slidably connected with the bottom plate (15), the bottom plate (15) is fixedly connected with two vertical plates which are arranged in a left and right interval, a bidirectional threaded rod (26) is rotationally connected between the two vertical plates, two threaded sleeve blocks (27) which are symmetrically distributed in a left and right interval are threadedly sleeved on the bidirectional threaded rod (26), the two threaded sleeve blocks (27) are respectively fixedly connected with the front ends of the two support frame plates (16), a second motor (28) for driving the bidirectional threaded rod (26) to rotate is fixedly installed on the bottom plate (15), a vertical electric telescopic rod (29) is fixedly installed at the front end of the film penetrating frame (1) in front, a vertical plate (30) is fixedly connected with the telescopic end of the electric telescopic rod (29), two pressing pulleys (31) are rotationally connected with the rear end of the vertical plate (30), the two pressing pulleys (31) are respectively in rolling contact with the upper end surfaces of the upper and lower belts of the transmission toothed belt (20), a moving groove (22) which is arranged towards the center of the rotating disc (17) is formed at the rear end of the rotating disc (17) and at the position of the pushing column (18), a sliding block is slidably connected in the moving groove (22), the sliding block is fixedly connected with the pushing column (18), end plates (23) are fixedly connected with the rotating disc (17) and at the positions of the two ends of the moving groove (22), a second adjusting screw (24) is rotationally connected between the two end plates (23), the second adjusting screw (24) penetrates the corresponding pushing column (18) and is threadedly connected therewith, and a rotating block (25) is coaxially fixedly connected with one end of the second adjusting screw (24).

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