A kind of heat shrinkable film production thickness on-line detection device

Abstract

The present application relates to the field of heat shrinkable film production detection, disclose a kind of heat shrinkable film production thickness on-line detection device, including rack, the rack upper end is equipped with drive auxiliary detection component, the drive auxiliary detection component upper end is equipped with connecting block, the drive auxiliary detection component is connected with the pair of shot detection mechanism by connecting block, the pair of shot detection mechanism is electrically connected with data processing module, and data processing module is electrically connected with data display screen, the rack upper end is equipped with winding mechanism with drive auxiliary detection component side, corresponding to drive auxiliary detection component side.The present application, by setting drive auxiliary detection component, motor one drive screw rod rotates, using the meshing effect of screw thread transmission hole and transmission screw rod, drive transmission cross bar along guide rod stable sliding, further through connecting block drive pair of shot detection mechanism synchronous movement, can be according to the width of heat shrinkable film flexible adjustment pair of shot detection mechanism position, realize heat shrinkable film full-width range detection.

Description

Technical Field

[0001] This invention relates to the field of heat shrink film production inspection, and more particularly to an online thickness inspection device for heat shrink film production. Background Technology

[0002] As a widely used material in the packaging industry, the thickness uniformity of heat shrink film is a key indicator affecting product quality, heat shrinkage effect, and performance. It is directly related to the sealing, protection, and appearance integrity of the packaging. Especially in fields with high packaging requirements, such as food, pharmaceuticals, and electronics, the precision control of heat shrink film thickness is even more stringent. According to industry standards, the thickness difference of the same batch of heat shrink film must be controlled within 0.005mm, and the average thickness deviation must be ≤±5%.

[0003] Currently, thickness inspection in the heat shrink film production process is mainly divided into two methods: offline sampling inspection and online inspection. Offline sampling inspection requires periodically taking samples during the production process and inspecting them using a contact thickness gauge. This method not only fails to achieve real-time monitoring of the entire production process, but also suffers from randomness in sampling inspection, making it difficult to fully reflect the thickness uniformity of the entire roll of heat shrink film. This can easily lead to unqualified products flowing into subsequent processes, resulting in waste of raw materials and reduced production efficiency. Most existing online inspection devices use fixed inspection heads, which cannot be flexibly adjusted according to the width of the heat shrink film, resulting in a limited inspection range and the potential for blind spots. Furthermore, the inspection heads are mostly fixed installation structures, making disassembly and assembly inconvenient and hindering later maintenance and replacement, thus increasing equipment maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an online detection device for the thickness of heat shrink film production to solve the problems of limited detection range, inconvenient disassembly and maintenance, and insufficient detection accuracy of existing detection devices.

[0005] To address the aforementioned problems, the present invention is implemented through the following technical solution.

[0006] An online thickness detection device for heat shrink film production includes: a frame, a drive-assisted detection component at the upper end of the frame, a connecting block at the upper end of the drive-assisted detection component, a through-beam detection mechanism connected to the drive-assisted detection component via the connecting block, a data processing module electrically connected to the through-beam detection mechanism, and a data display screen electrically connected to the data processing module. A winding mechanism is provided at the upper end of the frame next to the drive-assisted detection component, and a heat shrink film body is sleeved on the outside of the winding mechanism.

[0007] In one embodiment, the drive-assisted detection component includes a positioning bracket, a motor, a transmission screw, a bearing support, a guide rod, a transmission crossbar, a threaded transmission hole, and a smooth guide hole. The positioning bracket is welded and fixed to the upper end of the frame.

[0008] In one embodiment, the non-driving end of the motor is welded and fixed to the middle of one side of the positioning bracket, the driving end of the motor is provided with a transmission screw, and the end of the transmission screw away from the motor is provided with a bearing support. The guide rod is arranged parallel to both sides of the transmission screw, and its two ends are welded and fixed to the positioning bracket and the bearing support, respectively.

[0009] In one embodiment, a threaded transmission hole is provided in the middle of the transmission crossbar, and smooth guide holes are symmetrically provided at both ends of the transmission crossbar. The threaded transmission hole is threadedly engaged with the transmission screw, and the smooth guide hole is slidably engaged with the guide rod. The lower end of the transmission crossbar is fixedly connected to the through-beam detection bracket through a connecting block.

[0010] In one embodiment, the through-beam detection mechanism includes a through-beam detection bracket, a laser detection head, a mounting plate, a mounting slot, and fastening screws, wherein the through-beam detection bracket has a U-shaped structure.

[0011] In one embodiment, the U-shaped end of the laser detection bracket is symmetrically provided with mounting slots, and a laser detection head is mounted in the mounting slots. A mounting plate is provided on one side of the laser detection head.

[0012] In one embodiment, multiple sets of fastening screws are symmetrically arranged through both sides of the mounting plate, and the fastening screws extend into the through-beam detection bracket. The laser detection head forms a detachable structure with the through-beam detection bracket through the mounting plate and the fastening screws.

[0013] In one embodiment, the winding mechanism includes a side fixing frame, a second motor, a rotating shaft, and a side bearing seat, wherein the side fixing frame is welded and fixed to one side of the upper end of the frame.

[0014] In one embodiment, the non-driving end of the second motor is welded and fixed to the side fixing frame, the driving end of the second motor is provided with a rotating shaft, the end of the rotating shaft away from the second motor is provided with a side bearing seat, and a heat shrinkable film roll is sleeved on the outside of the rotating shaft.

[0015] This invention provides an online thickness detection device for heat shrink film production. Compared with the prior art, it has the following advantages:

[0016] By setting up a drive-assisted detection component, the motor drives the transmission screw to rotate. Utilizing the meshing action between the threaded transmission hole and the transmission screw, the transmission crossbar slides smoothly along the guide rod, which in turn drives the through-beam detection mechanism to move synchronously via the connecting block. The position of the through-beam detection mechanism can be flexibly adjusted according to the width of the heat shrink film, achieving detection across the entire width range of the heat shrink film. This effectively solves the problems of limited detection range and blind spots in existing devices, ensuring comprehensive detection and meeting the requirements for measuring the lateral thickness distribution of heat shrink film. In the through-beam detection mechanism, the laser detection head is mounted on the through-beam detection bracket via a mounting slot and then fixed by a mounting plate and fastening screws, forming a detachable structure. When the laser detection head malfunctions or needs calibration or replacement, simply loosen the fastening screws and remove the mounting plate to quickly remove the laser detection head. This simple operation eliminates the need to disassemble the entire detection mechanism, significantly reducing equipment maintenance difficulty and costs. It also facilitates regular calibration of the detection probe, ensuring detection accuracy and meeting the requirements for regular maintenance and calibration of testing instruments. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the online thickness detection device for heat shrink film production.

[0018] Figure 2 A schematic diagram of the auxiliary detection component driving the online thickness detection device for heat shrink film production.

[0019] Figure 3 A schematic diagram of the data processing module and data display screen of the online thickness detection device for heat shrink film production.

[0020] Figure 4 A schematic diagram of the winding mechanism and the heat shrink film body structure of the online thickness detection device for heat shrink film production.

[0021] Figure 5 A schematic diagram of the structure of the local drive auxiliary detection component and the through-beam detection mechanism of the online thickness detection device for heat shrink film production.

[0022] Figure 6 A schematic diagram of the through-beam inspection mechanism for an online thickness detection device in heat shrink film production.

[0023] Figure 7 A schematic diagram of the laser detection head and mounting plate structure of the online thickness detection device for heat shrink film production.

[0024] The attached figures are labeled as follows:

[0025] 1. Frame; 2. Drive Auxiliary Detection Components; 201. Positioning Bracket; 202. Motor 1; 203. Transmission Screw; 204. Bearing Support; 205. Guide Rod; 206. Transmission Crossbar; 207. Threaded Transmission Hole; 208. Smooth Guide Hole; 3. Connecting Block; 4. Through-beam Detection Mechanism; 401. Through-beam Detection Bracket; 402. Laser Detection Head; 403. Mounting Plate; 404. Mounting Slot; 405. Fastening Screw; 5. Data Processing Module; 6. Data Display Screen; 7. Winding Mechanism; 701. Side Fixing Frame; 702. Motor 2; 703. Rotating Shaft; 704. Side Bearing Seat; 8. Heat Shrink Film Body. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0027] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] Reference Figures 1-7 An online thickness detection device for heat shrink film production includes: a frame 1, a drive auxiliary detection component 2 at the upper end of the frame 1, a connecting block 3 at the upper end of the drive auxiliary detection component 2, a through-beam detection mechanism 4 connected to the drive auxiliary detection component 2 through the connecting block 3, a data processing module 5 electrically connected to the through-beam detection mechanism 4, and a data display screen 6 electrically connected to the data processing module 5. A winding mechanism 7 is provided on the upper end of the frame 1 next to the drive auxiliary detection component 2, and a heat shrink film body 8 is sleeved on the outside of the winding mechanism 7.

[0029] The drive auxiliary detection component 2 includes a positioning bracket 201, a motor 202, a transmission screw 203, a bearing support 204, a guide rod 205, a transmission crossbar 206, a threaded transmission hole 207, and a smooth guide hole 208. The positioning bracket 201 is welded and fixed to the upper end of the frame 1.

[0030] The non-driving end of motor 202 is welded and fixed to the middle of one side of positioning bracket 201. The driving end of motor 202 is provided with transmission screw 203, and the end of transmission screw 203 away from motor 202 is provided with bearing support 204. Guide rod 205 is arranged parallel to both sides of transmission screw 203, and both ends are welded and fixed to positioning bracket 201 and bearing support 204 respectively.

[0031] The transmission crossbar 206 has a threaded transmission hole 207 in the middle and smooth guide holes 208 symmetrically opened at both ends. The threaded transmission hole 207 is threadedly engaged with the transmission screw 203, and the smooth guide hole 208 is slidably engaged with the guide rod 205. The lower end of the transmission crossbar 206 is fixedly connected to the through-beam detection bracket 401 through the connecting block 3.

[0032] Start the motor 202 in the drive auxiliary detection component 2. The drive end of the motor 202 drives the transmission screw 203 to rotate around the bearing support 204. Since the threaded transmission hole 207 on the transmission crossbar 206 is threadedly engaged with the transmission screw 203, and the transmission crossbar 206 is slidably engaged with the guide rod 205 through the smooth guide hole 208, the rotation of the transmission screw 203 is converted into the linear sliding of the transmission crossbar 206 along the guide rod 205. The transmission crossbar 206 drives the through-beam detection mechanism 4 to move synchronously through the connecting block 3 until the laser detection head 402 of the through-beam detection mechanism 4 is aligned with the detection start position of the heat shrink film. After the adjustment is completed, turn off the motor 202 to ensure that the position of the through-beam detection mechanism 4 is fixed. It can be adjusted to any detection position of the heat shrink film as needed to achieve full-width detection.

[0033] The through-beam detection mechanism 4 includes a through-beam detection bracket 401, a laser detection head 402, a mounting plate 403, a mounting slot 404, and fastening screws 405. The through-beam detection bracket 401 has a U-shaped structure.

[0034] The U-shaped end of the through-beam detection bracket 401 is symmetrically provided with mounting slots 404, and a laser detection head 402 is installed in the mounting slots 404. A mounting plate 403 is provided on one side of the laser detection head 402.

[0035] Multiple sets of fastening screws 405 are symmetrically arranged on both sides of the mounting plate 403, and the fastening screws 405 extend into the through-beam detection bracket 401. The laser detection head 402 forms a detachable structure with the through-beam detection bracket 401 through the mounting plate 403 and the fastening screws 405.

[0036] When the laser detection head 402 in the laser beam detection mechanism 4 is activated, the symmetrically arranged laser detection heads 402 emit and receive lasers respectively. When the heat shrink film passes through the laser beam area, the laser will pass through the heat shrink film. The laser detection head 402 accurately detects the thickness data of the heat shrink film based on the change in the amount of laser transmission. The non-contact detection method avoids damage to the heat shrink film and reduces detection errors.

[0037] The winding mechanism 7 includes a side fixing frame 701, a second motor 702, a rotating shaft 703, and a side bearing seat 704. The side fixing frame 701 is welded and fixed to one side of the upper end of the frame 1.

[0038] The non-driving end of the second motor 702 is welded and fixed to the side fixing bracket 701. The driving end of the second motor 702 is provided with a rotating shaft 703. The end of the rotating shaft 703 away from the second motor 702 is provided with a side bearing seat 704. A heat shrink film body 8 is sleeved on the outside of the rotating shaft 703.

[0039] During use, the heat shrink film body 8 is fitted onto the outside of the rotating shaft 703 of the winding mechanism 7, ensuring that the heat shrink film body 8 is securely installed. Simultaneously, the connections of each component are checked to ensure that the laser detection head 402 is properly installed and the circuit connections are normal. The data processing module 5 is confirmed to be in normal working condition via the data display screen 6. The laser detection head 402 is calibrated to ensure that the detection accuracy meets requirements. The calibration process can use a standard reference piece of known thickness for zero-point and sensitivity adjustment. Based on the width of the heat shrink film, the motor 202 in the drive auxiliary detection component 2 is started. The drive end of the motor 202 drives the transmission screw 203 to rotate around the bearing support 204. Due to the threaded transmission hole 2 on the transmission crossbar 206... 07 engages with the threaded lead screw 203, and the transmission crossbar 206 slides with the guide rod 205 through the smooth guide hole 208. The rotation of the lead screw 203 is converted into the linear sliding of the transmission crossbar 206 along the guide rod 205. The transmission crossbar 206 drives the through-beam detection mechanism 4 to move synchronously through the connecting block 3 until the laser detection head 402 of the through-beam detection mechanism 4 is aligned with the detection start position of the heat shrink film. After adjustment, the first motor 202 is turned off to ensure that the position of the through-beam detection mechanism 4 is fixed. It can be adjusted to any detection position of the heat shrink film as needed to achieve full-width detection. The second motor 702 in the winding mechanism 7 is started. The drive end of the second motor 702 drives the rotating shaft 703 to rotate around the side bearing seat 704. 703 drives the heat shrink film body 8 to rotate synchronously, realizing the winding of the heat shrink film body 8 after processing outside the rotating shaft 703, so that the heat shrink film body 8 continuously passes through the U-shaped laser beam area of ​​the laser beam detection mechanism 4; at this time, the laser detection head 402 in the laser beam detection mechanism 4 is activated. The symmetrically arranged laser detection heads 402 emit and receive lasers respectively. When the heat shrink film passes through the laser beam area, the laser will pass through the heat shrink film. The laser detection head 402 accurately detects the thickness data of the heat shrink film according to the change in the amount of laser transmission. It adopts a non-contact detection method to avoid damage to the heat shrink film, reduce detection errors, ensure the accuracy of detection data, and meet the online detection requirements of high-speed production lines; laser detection head The 402 module transmits the detected thickness data to the data processing module 5 in real time. The data processing module 5 analyzes and processes the received thickness data, removes abnormal data, calculates the real-time thickness value of the heat shrink film, and can also calculate parameters such as the average thickness and range. Then, the processed thickness data is transmitted to the data display screen 6, which displays the thickness of the heat shrink film in real time, facilitating real-time monitoring by operators. If the thickness of the heat shrink film is detected to exceed the preset standard range, the data processing module 5 can issue an early warning signal to remind operators to adjust the production process in time, avoid the continued production of unqualified products, ensure that the product quality meets industry standard requirements, and retain the detection data for subsequent quality traceability and process optimization.When the heat shrink film production is complete or maintenance is required, turn off motor 702 and laser detection head 402. After the rotating shaft 703 stops rotating, remove the heat shrink film body 8. If maintenance or replacement of the laser detection head 402 is needed, loosen the fastening screws 405 on the mounting plate 403, remove the mounting plate 403, and the laser detection head 402 can be removed from the mounting slot 404. After maintenance or replacement, reinstall the laser detection head 402 into the mounting slot 404 and secure it with the mounting plate 403 and fastening screws 405 to complete the maintenance. The operation is simple and quick, reducing maintenance difficulty and cost. At the same time, regularly clean the laser detection head 402 to avoid dust and impurities affecting the detection accuracy, and regularly check all transmission components to ensure stable equipment operation.

[0040] Therefore, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the foregoing disclosure, and it should be understood that in some cases, certain features of the invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the following claims and / or the specific embodiments disclosed as the best mode for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the invention will be defined only by the appended claims.

Claims

1. An online thickness detection device for heat shrink film production, characterized in that, include: A frame (1) is provided with a drive auxiliary detection component (2) at the upper end of the frame (1). A connecting block (3) is provided at the upper end of the drive auxiliary detection component (2). The drive auxiliary detection component (2) is connected to a through-beam detection mechanism (4) through the connecting block (3). The through-beam detection mechanism (4) is electrically connected to a data processing module (5), and the data processing module (5) is electrically connected to a data display screen (6). A winding mechanism (7) is provided on the side of the upper end of the frame (1) corresponding to the drive auxiliary detection component (2). A heat shrink film body (8) is sleeved on the outside of the winding mechanism (7).

2. The online thickness detection device for heat shrink film production according to claim 1, characterized in that, The drive auxiliary detection component (2) includes a positioning bracket (201), a motor (202), a transmission screw (203), a bearing support (204), a guide rod (205), a transmission crossbar (206), a threaded transmission hole (207), and a smooth guide hole (208). The positioning bracket (201) is welded and fixed to the upper end of the frame (1).

3. The online thickness detection device for heat shrink film production according to claim 2, characterized in that, The non-driving end of the motor (202) is welded and fixed to the middle of one side of the positioning bracket (201). The driving end of the motor (202) is provided with a transmission screw (203), and the end of the transmission screw (203) away from the motor (202) is provided with a bearing support (204). The guide rod (205) is arranged parallel to both sides of the transmission screw (203), and both ends are welded and fixed to the positioning bracket (201) and the bearing support (204) respectively.

4. The online thickness detection device for heat shrink film production according to claim 2, characterized in that, The transmission crossbar (206) has a threaded transmission hole (207) in the middle and smooth guide holes (208) symmetrically opened at both ends. The threaded transmission hole (207) is threadedly engaged with the transmission screw (203). The smooth guide hole (208) is slidably engaged with the guide rod (205). The lower end of the transmission crossbar (206) is fixedly connected to the through-beam detection bracket (401) through the connecting block (3).

5. The online thickness detection device for heat shrink film production according to claim 1, characterized in that, The through-beam detection mechanism (4) includes a through-beam detection bracket (401), a laser detection head (402), a mounting plate (403), a mounting slot (404), and fastening screws (405). The through-beam detection bracket (401) has a U-shaped structure.

6. The online thickness detection device for heat shrink film production according to claim 5, characterized in that, The U-shaped end of the beam detection bracket (401) is symmetrically provided with mounting slots (404), and a laser detection head (402) is installed in the mounting slots (404). A mounting plate (403) is provided on one side of the laser detection head (402).

7. The online thickness detection device for heat shrink film production according to claim 6, characterized in that, The mounting plate (403) is symmetrically provided with multiple sets of fastening screws (405) on both sides, and the fastening screws (405) extend into the through-beam detection bracket (401). The laser detection head (402) forms a detachable structure with the through-beam detection bracket (401) through the mounting plate (403) and the fastening screws (405).

8. The online thickness detection device for heat shrink film production according to claim 1, characterized in that, The winding mechanism (7) includes a side fixing frame (701), a second motor (702), a rotating shaft (703) and a side bearing seat (704). The side fixing frame (701) is welded and fixed to one side of the upper end of the frame (1).

9. The online thickness detection device for heat shrink film production according to claim 8, characterized in that, The non-driving end of the second motor (702) is welded and fixed to the side fixing frame (701). The driving end of the second motor (702) is provided with a rotating shaft (703). The end of the rotating shaft (703) away from the second motor (702) is provided with a side bearing seat (704). A heat shrinkable film roll (8) is sleeved on the outside of the rotating shaft (703).

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