Stretching device for holographic anti-counterfeiting film

Abstract

The utility model relates to a stretching device for a holographic anti-counterfeiting film, which comprises a base, a vertical frame vertically fixed above the base and a case fixed at the top end of the front side of the vertical frame, and further comprises a pair of fastening jigs arranged up and down, a driving mechanism vertically extending downwards is arranged in the case, the upper fastening jig is arranged at the bottom end of the driving mechanism, and the lower fastening jig is arranged at the bottom end of the driving mechanism. The driving mechanism is used for driving the upper fastening jig to conduct lifting adjustment, a stand column is vertically fixed to the upper surface of the base, and the lower fastening jig is installed on the top of the stand column. By arranging the fastening jig, during stretching detection, the end part of the anti-counterfeiting film is clamped into the bayonet, and the shaft rod is screwed to drive the winding rod to rotate, so that the end part of the anti-counterfeiting film is wound and fastened, a traditional clamping block clamping mode is replaced for fixing, the anti-counterfeiting film is prevented from being clamped into blocks by excessive clamping, and meanwhile, the anti-counterfeiting film is prevented from being damaged. The end part of the anti-counterfeiting film is clamped into the bayonet and then is bent and wound on the winding rod, so that the anti-counterfeiting film is not easy to fall off during stretching, and the stability during stretching detection is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of holographic anti-counterfeiting film stretching detection technology, specifically a stretching device for holographic anti-counterfeiting film. Background Technology

[0002] Holographic laser anti-counterfeiting film is an advanced anti-counterfeiting material that integrates holographic technology and laser engraving process. It uses lasers to engrave complex patterns and optical structures at the micron level on the film. These patterns produce dynamic, rainbow-like optical effects under different light and viewing angles, which are difficult to replicate with ordinary printing technology. It is widely used in the identification, certificates, and currency of high-value products, providing strong anti-counterfeiting protection with its unique visual effects and unreplicable characteristics.

[0003] To evaluate the mechanical properties of holographic anti-counterfeiting film materials and ensure that they can withstand various stresses during use without breaking or deforming, it is necessary to use film tensile testing equipment to perform tensile tests on the anti-counterfeiting film materials to measure key parameters such as tensile strength, elongation at break, and elastic modulus. These parameters directly affect the durability and anti-counterfeiting effect of the anti-counterfeiting film.

[0004] Traditional membrane stretching testing equipment uses clamps to fix both ends of the membrane before testing in order to stretch the anti-counterfeiting film. The clamping method is to move the clamping blocks by turning the screw, and use the two clamping blocks to clamp the anti-counterfeiting film to achieve fixation. The above-mentioned fixing method is not stable enough. When the gap between the two clamping blocks is adjusted too large, the anti-counterfeiting film is easy to fall off during stretching. When the two clamping blocks are over-clamped, the anti-counterfeiting film is easily damaged, which will affect the test results. Utility Model Content

[0005] The purpose of this invention is to provide a stretching device for holographic anti-counterfeiting film, which effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A stretching device for holographic anti-counterfeiting film includes a base, a stand vertically fixed above the base, and a housing fixed to the top front side of the stand. It also includes a pair of fastening fixtures arranged vertically. The housing has a vertically downward extending drive mechanism. The upper fastening fixture is arranged at the bottom of the drive mechanism. The drive mechanism is used to drive the upper fastening fixture to adjust its height. A column is vertically fixed on the upper surface of the base. The lower fastening fixture is installed on the top of the column. The fastening fixture includes a horizontal seat, a vertical frame fixed on the horizontal seat, a shaft rotatably mounted through the vertical frame, and a winding rod fixed to the end of the shaft. Both winding rods are provided with slots for the anti-counterfeiting film to be inserted. The upper horizontal seat is installed at the bottom of the drive mechanism, and the lower horizontal seat is fixed to the top of the column.

[0008] Therefore, by setting a fastening fixture, during tensile testing, the end of the anti-counterfeiting film is inserted into the slot, and the shaft is turned to drive the winding rod to rotate, thus winding and securing the end of the anti-counterfeiting film. This replaces the traditional method of using clamping blocks for fixation, avoiding excessive clamping that could damage the anti-counterfeiting film. At the same time, since the end of the anti-counterfeiting film is inserted into the slot and then bent and wound onto the winding rod, it is not easy to fall off during tensile testing, effectively ensuring the stability during tensile testing.

[0009] Furthermore, the bayonet extends along the length of the winding rod, with one end of the bayonet penetrating the side end of the winding rod, and the cross-section of the bayonet is U-shaped.

[0010] Furthermore, the vertical frame is provided with a horizontally penetrating mounting hole, and the shaft is inserted through the mounting hole and rotatably connected to the inner wall of the mounting hole. The ends of the two vertical frames that are close to each other are provided with threaded holes that communicate with the corresponding mounting holes. The threaded holes are each threaded with fastening bolts whose ends abut against the outer surface of the shaft.

[0011] Furthermore, the drive mechanism includes an electric push cylinder, a connecting arm, and a connecting seat. The electric push cylinder is vertically fixed inside the chassis and extends to the bottom of the chassis. The bottom end of the connecting arm is fixedly connected to the upper surface of the upper horizontal seat through the connecting seat, and the top end is fixedly connected to the end of the telescopic rod of the electric push cylinder.

[0012] Furthermore, a handle A is installed at the end of the shaft away from the winding rod, and a handle B is installed on the outer end of the fastening bolt.

[0013] Furthermore, the vertical frame and horizontal support are arranged in an L-shaped structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0015] 1. This utility model, by setting a fastening fixture, inserts the end of the anti-counterfeiting film into the slot during tensile testing, and rotates the shaft to drive the winding rod to roll up and fasten the end of the anti-counterfeiting film. This replaces the traditional method of fixing by clamping with clamping blocks, avoiding excessive clamping that could damage the anti-counterfeiting film. At the same time, since the end of the anti-counterfeiting film is inserted into the slot and then bent and rolled up onto the winding rod, it is not easy to fall off during tensile testing, effectively ensuring the stability during tensile testing.

[0016] 2. This utility model designs the slot in a U-shape. When the end of the anti-counterfeiting film is inserted into the slot, the end of the anti-counterfeiting film has a bent portion, which increases the contact friction area between the anti-counterfeiting film and the inner wall of the slot. At the same time, the slot extends along the length of the winding rod. After the anti-counterfeiting film is completely inserted into the slot, the contact friction area between the anti-counterfeiting film and the inner wall of the slot can also be increased. This ensures that the anti-counterfeiting film is not easy to fall off during winding and is not easy to fall off during stretching. Attached Figure Description

[0017] Figure 1This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a detailed structural diagram of the fastening fixture in this utility model;

[0019] Figure 3 This is a schematic diagram of the winding rod structure in this utility model;

[0020] Figure 4 This is a detailed structural diagram of the drive mechanism in this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of the fastening fixture structure in this utility model.

[0022] In the diagram: 1. Base; 11. Column; 2. Stand; 3. Chassis; 4. Fastening fixture; 41. Horizontal seat; 42. Vertical frame; 421. Mounting hole; 422. Threaded hole; 43. Shaft; 431. Handle A; 44. Winding rod; 441. Bayonet; 45. Fastening bolt; 451. Handle B; 5. Drive mechanism; 51. Electric push cylinder; 52. Connecting arm; 53. Connecting seat. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0026] Please see Figures 1-5 This utility model provides a stretching device for holographic anti-counterfeiting film, including a base 1, a stand 2 vertically fixed above the base 1, and a housing 3 fixed to the top front side of the stand 2. It also includes a pair of vertically arranged fastening fixtures 4. The housing 3 contains a vertically extending downward drive mechanism 5. The upper fastening fixture 4 is located at the bottom of the drive mechanism 5. A column 11 is vertically fixed to the upper surface of the base 1, and the lower fastening fixture 4 is installed on the top of the column 11. The fastening fixture 4 includes a horizontal seat 4. 1. A vertical frame 42 fixed on a horizontal seat 41, a shaft 43 rotatably mounted on the vertical frame 42, and a winding rod 44 fixed on the end of the shaft 43. Both winding rods 44 are provided with slots 441 for the anti-counterfeiting film to be inserted. The upper horizontal seat 41 is installed at the bottom of the drive mechanism 5, and the lower horizontal seat 41 is fixed at the top of the column 11. In addition, the vertical frame 42 and the horizontal seat 41 are arranged in an L-shaped structure, which can adapt to the deformation of the winding rod 44 when winding and fastening the anti-counterfeiting film. The structure layout is reasonable.

[0027] When performing a stretch test on the holographic laser anti-counterfeiting film, firstly, one end of the anti-counterfeiting film is inserted into the lower slot 441, and the shaft 43 is turned to drive the winding rod 44 to rotate, thus winding and securing the end of the anti-counterfeiting film. Then, the other end of the anti-counterfeiting film is inserted into the upper slot 441, and the shaft 43 is turned to drive the upper winding rod 44 to rotate, thus winding and securing the upper end of the anti-counterfeiting film. This completes the fixing of both ends of the anti-counterfeiting film. Then, the drive mechanism 5 moves the upper fastening fixture 4 upward, thus stretching the anti-counterfeiting film.

[0028] By setting a fastening fixture 4, during tensile testing, the end of the anti-counterfeiting film is inserted into the slot 441, and the shaft 43 is turned to drive the winding rod 44 to rotate, thus winding and securing the end of the anti-counterfeiting film. This replaces the traditional method of using clamping blocks for fixation, avoiding excessive clamping that could damage the anti-counterfeiting film. At the same time, since the end of the anti-counterfeiting film is inserted into the slot 441 and then bent and wound onto the winding rod 44, it is not easy to fall off during tensile testing, effectively ensuring stability during tensile testing.

[0029] It is also worth noting that by setting sensors and monitoring devices at corresponding parts of this stretching device and connecting them to the processor, various data during stretching are collected and monitored using the sensors and monitoring devices, and the data is transmitted to the processor for analysis and calculation. The processed data is then displayed intuitively on the screen, thereby completing the stretching test of the anti-counterfeiting film. The focus of this application is on the anti-counterfeiting film stretching device, while the above-mentioned content on how to detect it uses existing technology and is not disclosed in detail in this application.

[0030] like Figure 3 As shown, the latch 441 extends along the length of the winding rod 44, with one end of the latch 441 penetrating the side end of the winding rod 44. The cross-section of the latch 441 is U-shaped. By designing the latch 441 as U-shaped, when the end of the anti-counterfeiting film is inserted into the latch 441, a bend is formed at the end of the anti-counterfeiting film, increasing the contact friction area between the anti-counterfeiting film and the inner wall of the latch 441. At the same time, since the latch 441 extends along the length of the winding rod 44, after the anti-counterfeiting film is completely inserted into the latch 441, the contact friction area between the anti-counterfeiting film and the inner wall of the latch 441 can also be increased. This ensures that the anti-counterfeiting film is not easy to fall off during winding and is not easy to fall off during stretching.

[0031] Please see Figure 3 and Figure 5 The vertical frame 42 is provided with a horizontally penetrating mounting hole 421. The shaft 43 is inserted through the mounting hole 421 and rotatably connected to the inner wall of the mounting hole 421. The ends of the two vertical frames 42 that are close to each other are provided with threaded holes 422 that communicate with the corresponding mounting holes 421. Each threaded hole 422 is threaded with a fastening bolt 45 whose end abuts against the outer surface of the shaft 43. After the anti-counterfeiting film is rolled up and tightened, the shaft 43 can be locked by tightening the fastening bolt 45 and using the end of the fastening bolt 45 to press against the shaft 43. This prevents the shaft 43 and the winding rod 44 from rotating at will, which would cause the anti-counterfeiting film to fall off the winding rod 44. This further ensures the firmness during winding and stretching.

[0032] A handle A431 is installed at the end of the shaft 43 away from the winding rod 44, and a handle B451 is installed on the outer end of the fastening bolt 45. By squeezing the handle A431, it is convenient to apply force to rotate and adjust the shaft 43, and by squeezing the handle B451, it is convenient to apply force to rotate and adjust the fastening bolt 45. In addition, both handles A431 and handle B451 are provided with anti-slip textures, which can effectively prevent slippage.

[0033] Please see Figure 1 and Figure 4The drive mechanism 5 is used to drive the upper fastening fixture 4 to adjust its height. The drive mechanism 5 includes an electric push cylinder 51, a connecting arm 52, and a connecting seat 53. The electric push cylinder 51 is vertically fixed inside the housing 3 and extends to the bottom of the housing 3. The bottom end of the connecting arm 52 is fixedly connected to the upper surface of the upper horizontal seat 41 through the connecting seat 53, and the top end is fixedly connected to the end of the telescopic rod of the electric push cylinder 51. Through the telescopic operation of the electric push cylinder 51, the upper fastening fixture 4 can be driven to rise and fall under the connection of the connecting arm 52 and the connecting seat 53, thereby providing a stable drive for the stretching action.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stretching device for holographic anti-counterfeiting film, comprising a base (1), a stand (2) vertically fixed above the base (1), and a housing (3) fixed to the top front side of the stand (2), characterized in that: It also includes a pair of fastening fixtures arranged vertically (4); The chassis (3) is provided with a vertically downward extending drive mechanism (5), and the upper fastening fixture (4) is arranged at the bottom of the drive mechanism (5). The drive mechanism (5) is used to drive the upper fastening fixture (4) to adjust its height. A column (11) is vertically fixed on the upper surface of the base (1), and the lower fastening fixture (4) is installed on the top of the column (11). The fastening fixture (4) includes a horizontal seat (41), a vertical frame (42) fixed on the horizontal seat (41), a shaft (43) rotatably mounted on the vertical frame (42), and a winding rod (44) fixed on the end of the shaft (43); Each of the winding rods (44) is provided with a slot (441) for inserting the anti-counterfeiting film; The upper horizontal seat (41) is installed at the bottom of the drive mechanism (5), and the lower horizontal seat (41) is fixed at the top of the column (11).

2. The stretching device for a holographic anti-counterfeiting film according to claim 1, characterized in that: The bayonet (441) extends along the length of the winding rod (44), and one end of the bayonet (441) penetrates the side end of the winding rod (44); The cross-section of the bayonet (441) is U-shaped.

3. The stretching device for a holographic anti-counterfeiting film according to claim 1, characterized in that: The vertical frame (42) is provided with a horizontally penetrating mounting hole (421), and the shaft (43) is inserted through the mounting hole (421) and rotatably connected to the inner wall of the mounting hole (421); Both of the vertical brackets (42) have threaded holes (422) at their close ends that communicate with the corresponding mounting holes (421). Each of the threaded holes (422) is fitted with a fastening bolt (45) whose end abuts against the outer surface of the shaft (43).

4. The stretching device for a holographic anti-counterfeiting film according to claim 1, characterized in that: The drive mechanism (5) includes an electric push cylinder (51), a connecting arm (52), and a connecting seat (53); The electric push cylinder (51) is vertically fixed inside the housing (3) and extends to the bottom of the housing (3); The bottom end of the connecting arm (52) is fixedly connected to the upper surface of the horizontal seat (41) above through the connecting seat (53), and the top end is fixedly connected to the end of the telescopic rod of the electric push cylinder (51).

5. The stretching device for a holographic anti-counterfeiting film according to claim 3, characterized in that: A handle A (431) is installed at the end of the shaft (43) away from the winding rod (44), and a handle B (451) is installed at the outer end of the fastening bolt (45).

6. The stretching device for a holographic anti-counterfeiting film according to claim 1, characterized in that: The vertical frame (42) and the horizontal seat (41) are arranged in an L-shaped structure.

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