Wire dotting machine capable of preventing protective film from loosening

By using a weight sensor and a servo motor, the position of the idler rollers is automatically adjusted, which solves the problem of inaccurate control of the protective film tension, ensures the quality of the protective film's dots and lines, and simplifies the replacement and maintenance process of the idler rollers.

CN223737329UActive Publication Date: 2025-12-30WUXI SHENHUI TECH CO LTD
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Patent Information

Application Number
CN202520119521.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2025-12-30
Estimated Expiration
2035-01-20

AI Technical Summary

Technical Problem

The existing dotting and lining machine cannot precisely control the tension of the protective film, resulting in excessive or insufficient tension, which affects the dotting and lining quality of the protective film, and makes it inconvenient to replace and maintain the idler rollers.

Method used

Using a weight sensor and servo motor in conjunction with a controller, the system automatically adjusts the position of the idler rollers to maintain proper tension by detecting the force exerted by the protective film on the rollers. The design of the hexagonal blocks and slots facilitates the disassembly and replacement of the idler rollers.

Benefits of technology

This ensures that the tension of the protective film is maintained within an appropriate range, preventing damage or affecting the quality of the dots and lines, while also facilitating the disassembly and maintenance of the idler rollers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a dotting machine capable of preventing a protective film from loosening, which comprises a dotting machine frame, a fixing plate is fixed in the dotting machine frame, a supporting plate is arranged on the fixing plate through a height adjusting mechanism, a weight sensor is fixed at the top of the supporting plate, a U-shaped frame is fixed at the top of the weight sensor, and the U-shaped frame is fixed at the bottom of the dotting machine frame. A third rotating shaft is rotationally installed on the side of the U-shaped frame through a bearing, a carrier roller is arranged on the third rotating shaft through a fixing mechanism, a guide roller is rotationally installed in the dotting machine rack through a bearing, protective films are arranged on the guide roller and the carrier roller, and the height adjusting mechanism comprises a fixing block. According to the dotting machine capable of preventing the protective film from loosening, it can be guaranteed that the protective film is under the normal tensile force, the situation that the protective film is damaged due to the fact that the tensile force is too large is avoided, and the situation that dotting of the protective film is affected due to the fact that the tensile force is too small is also avoided.
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Description

TECHNICAL FIELD

[0001] The utility model relates to protective film processing technical field, concretely is a kind of point line machine for preventing protective film slack. BACKGROUND

[0002] Protective film can be divided into digital product protective film, automobile protective film, household protective film, food preservation protective film etc.

[0003] However, the protective film tightness adjusting mechanism on the existing point line machine is tensioned by the elastic force of spring, and since the elastic force of spring cannot be controlled, it can cause the tensioning force on the protective film to be too large or too small, which is not conducive to the tensioning of the protective film and affects the quality of protective film point line, and it is not convenient to disassemble and replace or overhaul the supporting roller.

[0004] In view of the above problems, it is urgent to make innovative design on the basis of the original protective film point line machine. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of point line machine for preventing protective film slack to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of point line machine for preventing protective film slack, including point line machine frame, the inside of point line machine frame is fixed with fixed plate, support plate is provided on the fixed plate by height adjusting mechanism, the top of support plate is fixed with weight sensor, the top of weight sensor is fixed with U-shaped frame, the side of U-shaped frame is rotatably installed with third rotating shaft by bearing, the third rotating shaft is provided with supporting roller by fixed mechanism, the inside of point line machine frame is rotatably installed with guide roller by bearing, protective film is provided on guide roller and supporting roller;

[0007] The height adjusting mechanism includes fixed block, the top of fixed plate is fixed with fixed block, the first rotating shaft is rotatably installed between the fixed block, the outer side of first rotating shaft is provided with movable sleeve, the top of movable sleeve and the bottom of support plate are fixed with baffle, the second rotating shaft is rotatably installed between baffle, the outer side of second rotating shaft is fixedly connected with the inner side of support rod end portion, the end portion of first rotating shaft is fixedly connected with the output end of servo motor by penetrating the inside of fixed block, the bottom of servo motor is fixed on the top of fixed plate, the both sides of support plate bottom are fixed with guide rod, the lower end of guide rod is fixed with anti-drop block by penetrating the inside of fixed plate.

[0008] Preferably, the fixing mechanism comprises a groove, one side of the third rotating shaft is provided with the groove, a clamping block is arranged in the groove, the end of the clamping block is arranged in a clamping groove, the clamping groove is arranged in the end of the supporting roller, and the end of the supporting roller is attached to the end of the third rotating shaft, the other end of the clamping block is rotatably provided with a screw rod through a bearing, and the end of the screw rod is fixedly provided with a handle penetrating through the end of the third rotating shaft.

[0009] Preferably, the outer wall of the point line machine rack is fixedly provided with a controller, and the controller is electrically connected with the servo motor and the weight sensor.

[0010] Preferably, opposite threads are arranged at the two ends of the first rotating shaft between the fixing blocks, the first rotating shaft is threadedly connected with the movable sleeve, and the movable sleeve, the baffle, the second rotating shaft and the supporting rod are symmetrically arranged about the central axis of the supporting plate.

[0011] Preferably, the fixing plate and the guide rod are slidably connected, and the guide rod and the anti-disengagement block are combined into a T-shaped structure.

[0012] Preferably, the groove, the clamping block and the clamping groove are designed into regular hexagonal structures in side view, the clamping block is clamped and connected with the clamping groove, the third rotating shaft is threadedly connected with the screw rod, and the central axes of the third rotating shaft, the supporting roller, the groove, the clamping block, the clamping groove, the screw rod and the handle coincide with each other.

[0013] Compared with the prior art, the point line machine for preventing the protective film from loosening has the advantages that when the weight sensor detects that the force of the protective film on the supporting roller is less than the preset value of the weight sensor, the weight sensor transmits a signal to the controller, and then the controller controls the servo motor to rotate, so that the supporting roller can move upward, thereby the supporting roller tensions the protective film; when the force of the protective film on the supporting roller reaches the preset value, the weight sensor transmits a signal to the controller, and the controller controls the servo motor to stop moving; similarly, when the weight sensor detects that the force of the protective film on the supporting roller is greater than the preset value of the weight sensor, the servo motor is started to rotate reversely, so that the supporting roller moves downward; when the force of the protective film on the supporting roller reaches the preset value, the weight sensor transmits a signal to the controller, and the controller controls the servo motor to stop moving, so that the protective film can be kept in normal tension, and the protective film is not damaged due to excessive tension, and the point line of the protective film is not affected due to insufficient tension.

[0014] By rotating the handle, the handle drives the screw rod to rotate, since the screw rod is threadedly connected with the third rotating shaft, the groove, the clamping block and the clamping groove are designed into regular hexagonal structures in side view, the clamping block is clamped and connected with the clamping groove, and the clamping block is slidably connected with the groove, so that the screw rod pulls the clamping block, the clamping block is separated from the clamping groove, and therefore the supporting roller can be conveniently disassembled for replacement or maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view sectional structure schematic view of the utility model;

[0016] Figure 2 It is the front view sectional structure schematic view of the utility model Figure 1 It is the front view sectional structure schematic view of the utility model;

[0017] Figure 3 It is the front view sectional structure schematic view of the utility model;

[0018] Figure 4 It is the front view sectional structure schematic view of the utility model;

[0019] Figure 5 It is the front view sectional structure schematic view of the utility model;

[0020] In the drawing: 1, the point line machine frame; 2, fixed plate; 3, guide rod; 4, support plate; 5, anti-drop block; 6, fixed block; 7, first rotating shaft; 8, movable sleeve; 9, baffle; 10, second rotating shaft; 11, support rod; 12, servo motor; 13, weight sensor; 14, U-shaped frame; 15, third rotating shaft; 16, carrier roller; 17, recess; 18, clamping block; 19, clamping groove; 20, screw rod; 21, handle; 22, controller; 23, guide roller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of point line machine to prevent protective film slack, including point line machine frame 1, the inside fixed plate 2 of point line machine frame 1 is provided with support plate 4 on fixed plate 2 by height adjusting mechanism, the top of support plate 4 is fixed with weight sensor 13, the top of weight sensor 13 is fixed with U-shaped frame 14, third rotating shaft 15 is rotatably installed on the side of U-shaped frame 14 by bearing, third rotating shaft 15 is provided with carrier roller 16 by fixed mechanism, the inside of point line machine frame 1 is rotatably installed by bearing guide roller 23, guide roller 23 and carrier roller 16 are provided with protective film;

[0023] The height adjusting mechanism comprises fixed blocks 6, the top of the fixed plate 2 is fixed with the fixed blocks 6, the first rotating shaft 7 is rotatably arranged between the fixed blocks 6 through bearings, the outer side of the first rotating shaft 7 is provided with a movable sleeve 8, the top of the movable sleeve 8 and the bottom of the supporting plate 4 are fixed with baffle plates 9, the second rotating shaft 10 is rotatably arranged between the baffle plates 9 through bearings, the outer side of the second rotating shaft 10 is fixedly connected with the inner side of the end of the supporting rod 11, the end of the first rotating shaft 7 is fixedly connected with the output end of the servo motor 12 through the inside of the fixed block 6, the bottom of the servo motor 12 is fixed to the top of the fixed plate 2, the bottom of the supporting plate 4 is fixed with guide rods 3 on both sides, and the lower end of the guide rod 3 is fixed with an anti-dropping block 5 through the inside of the fixed plate 2.

[0024] The fixing mechanism comprises a groove 17, the side of the third rotating shaft 15 is provided with the groove 17, the inside of the groove 17 is arranged with a clamping block 18, the end of the clamping block 18 is located in the inside of a clamping groove 19, the clamping groove 19 is arranged at the end of the supporting roller 16, and the end of the supporting roller 16 is matched with the end of the third rotating shaft 15, the other end of the clamping block 18 is rotatably arranged with a lead screw 20 through a bearing, and the end of the lead screw 20 is fixed with a handle 21 through the end of the third rotating shaft 15.

[0025] The outer wall of the point line machine rack 1 is fixed with a controller 22, and the controller 22 is electrically connected with the servo motor 12 and the weight sensor 13.

[0026] The fixed plate 2 and the guide rod 3 are slidingly connected, the guide rod 3 and the anti-dropping block 5 are combined into a “T” type structure, the design of the anti-dropping block 5 prevents the separation between the fixed plate 2 and the guide rod 3, the design of the guide rod 3 is beneficial to the lifting of the supporting plate 4, the opposite threads are arranged at the two ends of the first rotating shaft 7 between the fixed blocks 6, the first rotating shaft 7 is threadedly connected with the movable sleeve 8, and the movable sleeve 8, the baffle plate 9, the second rotating shaft 10 and the supporting rod 11 are symmetrically distributed about the central axis of the supporting plate 4, so that when the first rotating shaft 7 is positively rotated or reversely rotated, the movable sleeve 8 can move towards each other or move away from each other.

[0027] The side view of the groove 17, the clamping block 18 and the clamping groove 19 is designed as a regular hexagonal structure, the clamping block 18 is clamped and connected with the clamping groove 19, the clamping block 18 is slidingly connected with the groove 17, the third rotating shaft 15 is threadedly connected with the lead screw 20, the central axes of the third rotating shaft 15, the supporting roller 16, the groove 17, the clamping block 18, the clamping groove 19, the lead screw 20 and the handle 21 coincide with each other, so that when the lead screw 20 is positively rotated or reversely rotated, the lead screw 20 can drive the clamping block 18 to move leftward or rightward, the separation or clamping of the clamping block 18 and the clamping groove 19 is completed, and the third rotating shaft 15 can drive the supporting roller 16 to rotate through the clamping block 18 and the clamping groove 19.

[0028] Working principle: when the weight sensor 13 detects that the force of the protective film on the roller 16 is less than the preset value of the weight sensor 13, the weight sensor 13 sends a signal to the controller 22, and then the controller 22 controls the servo motor 12 to rotate, and the servo motor 12 drives the first rotating shaft 7 to rotate, since the first rotating shaft 7 is provided with opposite threads at both ends between the fixed blocks 6, and the first rotating shaft 7 and the movable sleeve 8 are threadedly connected, and the fixed plate 2 and the guide rod 3 are slidingly connected, therefore the first rotating shaft 7 makes the two movable sleeves 8 move away from each other, and the two movable sleeves 8 push the two supporting rods 11 to rotate, and the two supporting rods 11 simultaneously drive the guide rod 3, the supporting plate 4 and the roller 16 and other parts to move upward, so that the roller 16 tensions the protective film, when the force of the protective film on the roller 16 reaches the preset value, the weight sensor 13 sends a signal to the controller 22, and the controller 22 controls the servo motor 12 to stop moving, and similarly when the weight sensor 13 detects that the force of the protective film on the roller 16 is greater than the preset value of the weight sensor 13, the servo motor 12 is started to rotate in reverse, so that the roller 16 moves downward, when the force of the protective film on the roller 16 reaches the preset value, the weight sensor 13 sends a signal to the controller 22, and the controller 22 controls the servo motor 12 to stop moving, so as to ensure that the protective film can be in a normal tension, and will not be damaged due to excessive tension, and will not affect the protective film due to insufficient tension;

[0029] By rotating the handle 21, the handle 21 drives the screw rod 20 to rotate, since the screw rod 20 and the third rotating shaft 15 are threadedly connected, and the side view of the groove 17, the clamping block 18 and the clamping groove 19 are designed as a regular hexagonal structure, and the clamping block 18 and the clamping groove 19 are clamped and connected, and the clamping block 18 and the groove 17 are slidingly connected, therefore the screw rod 20 pulls the clamping block 18, so that the clamping block 18 is separated from the clamping groove 19, so that the roller 16 is disassembled, so as to facilitate the disassembly, replacement or maintenance of the roller 16.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A spot line machine for preventing loosening of a protective film, comprising a spot line machine frame (1), characterized in that: The inside of the point line machine rack (1) is fixedly provided with a fixed plate (2), the fixed plate (2) is provided with a support plate (4) through a height adjusting mechanism, the top of the support plate (4) is fixedly provided with a weight sensor (13), the top of the weight sensor (13) is fixedly provided with a U-shaped frame (14), the side of the U-shaped frame (14) is rotatably provided with a third rotating shaft (15) through a bearing, the third rotating shaft (15) is provided with a supporting roller (16) through a fixing mechanism, the inside of the point line machine rack (1) is rotatably provided with a guide roller (23) through a bearing, and the guide roller (23) and the supporting roller (16) are provided with a protective film. The height adjusting mechanism comprises fixed blocks (6), the top of the fixed plate (2) is fixedly provided with the fixed blocks (6), the first rotating shaft (7) is rotatably arranged between the fixed blocks (6), the outer side of the first rotating shaft (7) is provided with a movable sleeve (8), the top of the movable sleeve (8) and the bottom of the support plate (4) are fixedly provided with baffles (9), the second rotating shaft (10) is rotatably arranged between the baffles (9), the outer side of the second rotating shaft (10) is fixedly connected with the inner side of the end of the supporting rod (11), the end of the first rotating shaft (7) penetrates the inside of the fixed block (6) and is fixedly connected with the output end of the servo motor (12), the bottom of the servo motor (12) is fixed to the top of the fixed plate (2), the two sides of the bottom of the support plate (4) are fixedly provided with guide rods (3), and the lower ends of the guide rods (3) penetrate the inside of the fixed plate (2) and are fixedly provided with anti-dropping blocks (5).

2. The spotter according to claim 1, wherein: The fixing mechanism comprises a groove (17), one side of the third rotating shaft (15) is provided with the groove (17), the inside of the groove (17) is provided with a clamping block (18), the end of the clamping block (18) is located in the inside of a clamping groove (19), the clamping groove (19) is arranged at the end of the supporting roller (16), and the end of the supporting roller (16) and the end of the third rotating shaft (15) are mutually attached, the other end of the clamping block (18) is rotatably provided with a lead screw (20) through a bearing, and the end of the lead screw (20) penetrates the end of the third rotating shaft (15) and is fixedly provided with a handle (21).

3. The spotter according to claim 1, wherein: The outer wall of the point line machine rack (1) is fixedly provided with a controller (22), and the controller (22) is electrically connected with the servo motor (12) and the weight sensor (13).

4. The spotter according to claim 1, wherein: The two ends of the first rotating shaft (7) located between the fixed blocks (6) are provided with opposite threads, the first rotating shaft (7) and the movable sleeve (8) are threadedly connected, and the movable sleeve (8), the baffle (9), the second rotating shaft (10) and the supporting rod (11) are symmetrically distributed about the central axis of the support plate (4).

5. The spotter according to claim 1, wherein: The fixed plate (2) and the guide rod (3) are slidingly connected, and the guide rod (3) and the anti-dropping block (5) are combined into a "T" type structure.

6. The spotter according to claim 2, wherein: The side view of the recess (17), the clamping block (18) and the clamping groove (19) is designed as a regular hexagon structure, the clamping block (18) and the clamping groove (19) are connected in clamping, and the clamping block (18) and the recess (17) are connected in sliding, the third rotating shaft (15) and the screw rod (20) are connected in screwing, and the central axes of the third rotating shaft (15), the carrier roller (16), the recess (17), the clamping block (18), the clamping groove (19), the screw rod (20) and the handle (21) coincide with each other.