A device for testing the resistance of a polyester film to wiping

Abstract

The utility model relates to the technical field of wiping resistance detection, concretely to a polyester film wiping resistance detection device, the top of box body is equipped with sliding groove, sliding rod penetrates and is connected swing disc, swing disc recess embeds magnetic attraction material, and the bottom rubber thin pad prevents skidding of magnetic attraction frame board adsorption fixed film sample, the bottom wiping pad of wiping head is pasted groove bottom surface, driving motor drives rotary disc, eccentric shaft drives connecting rod through pull rod, makes sliding rod reciprocating slide, and wiping head is installed in the bottom of guide rod through threaded rod, and the top of guide rod is inserted in rod and bears weight pressure, guide rod penetrates first guide block perpendicularly, and first guide block is fixed with first adjusting rod, first adjusting rod is horizontally arranged in second guide block, and second guide block is sleeved on vertical second adjusting rod, two adjusting screws lock first adjusting rod horizontal position and second guide block vertical height respectively, ensure that weight bearing is reliable and wiping point is stable, the device realizes film fast clamping, automatic reciprocating friction and adjustable pressure test.

Description

Technical Field

[0001] This utility model relates to the field of abrasion resistance testing technology, specifically a device for testing the abrasion resistance of polyester films. Background Technology

[0002] The polyester film abrasion resistance testing device is a specialized instrument used to test the surface abrasion resistance of polyester film materials. It applies standardized mechanical forces to the film by simulating real-world wiping scenarios (such as repeated friction and stress), thereby evaluating the material's surface resistance to abrasion, scratches, and maintenance of integrity after long-term wiping use. Since polyester film is widely used in fields requiring frequent cleaning or contact friction, such as electronic product screen protectors, food packaging films, and industrial labels, its surface abrasion resistance directly affects product lifespan and appearance quality. Therefore, this device is necessary to quantitatively test the film's durability during the R&D and quality control stages to ensure the material meets the wiping strength requirements of actual use and avoids functional failure or appearance damage due to premature surface wear.

[0003] However, traditional testing devices involve cumbersome and time-consuming procedures for fixing the film (such as bolt tightening or simple clamps), and often lack efficient anti-slip designs, which can easily lead to unexpected displacement of the film sample during testing, affecting test accuracy and repeatability. Furthermore, existing devices have shortcomings in adjusting and maintaining the position of the pressure application point. For example, the load-bearing reliability of the limiting structure is limited after vertical adjustment, or the horizontal adjustment point is easily shifted by external forces, which affects the precise control of the pressure application position and the repeatability of multi-area testing. Utility Model Content

[0004] The purpose of this invention is to provide a polyester film abrasion resistance testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A polyester film abrasion resistance testing device includes a swing disk with a groove at its top. A magnetic frame plate is magnetically installed in the groove using magnetic material. The bottom of the magnetic frame plate is covered with a thin rubber pad. Sliding rods are symmetrically installed at the bottom of the swing disk. The ends of the sliding rods extend through sliding grooves into the interior of a housing. A connecting rod is fixedly installed between the ends of the sliding rods. The sliding grooves are symmetrically located at the top of the housing. A wiping assembly is fixedly installed on one side of the top of the housing. The wiping assembly includes two wiping heads, each with a wiping pad at its bottom. The wiping pads are respectively attached to the bottom surface of the groove.

[0006] Preferably, a pull rod is mounted on the connecting rod via a bearing, and the other end of the pull rod is mounted on an eccentric shaft via a bearing. The eccentric shaft is fixedly mounted on one side of the rotating disk.

[0007] Preferably, the center of the rotating disk is located at the output end of the drive motor via a shaft, the drive motor is mounted on the top of the bottom cover by bolts, and a microcontroller is mounted on the top of the bottom cover adjacent to the drive motor by bolts.

[0008] Preferably, the bottom cover is bolted to the bottom of the box, a switch is installed through the box on the side away from the sliding groove, and an adjustment knob is installed through the box adjacent to the switch.

[0009] Preferably, a power cord is installed through the housing adjacent to the adjustment knob, and the corresponding pins of the power cord, adjustment knob, switch, microcontroller, and drive motor are connected by flexible wires.

[0010] Preferably, a threaded rod is fixedly installed at the top of the wiping head, the threaded rod is threadedly installed at the bottom of the guide rod, and an insert rod is fixedly installed at the top of the guide rod.

[0011] Preferably, the guide rods are perpendicularly inserted through one side of the first guide block and are fitted with a clearance, and the first adjusting rods are respectively installed parallel to each other on the side of the first guide block away from the insertion point of the guide rods.

[0012] Preferably, the other end of the first adjusting rod passes through one side of the second guide block in parallel with a clearance fit, and the second guide block has the second adjusting rod passing through it perpendicularly on the side away from the first adjusting rod with a clearance fit.

[0013] Preferably, the second adjusting rods are symmetrically installed on one side of the top of the housing, and adjusting screws are threadedly installed on both sides of the second guide block, with the ends of the adjusting screws abutting against the first adjusting rod and the second adjusting rod, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This polyester film abrasion resistance testing device, through the rapid adsorption and cooperation between the magnetic material and the magnetic frame plate, and the anti-slip design of the rubber pad at the bottom of the magnetic frame plate, can realize instantaneous and reliable clamping of film samples, effectively avoid sample displacement during the test, and significantly improve clamping efficiency and test stability.

[0015] 2. This polyester film wiping resistance testing device precisely controls the linear reciprocating motion of the sliding rod through a crank-slider mechanism consisting of a motor-driven eccentric shaft, a pull rod, and a connecting rod. This mechanism drives the film sample to perform a highly stable standard wiping action. Simultaneously, a lockable wiping head position fine-tuning system with dual adjusting screws ensures that the limiting structure always reliably bears the pressure of the weights and accurately positions the wiping point, significantly improving the automation, repeatability, and flexibility of the evaluation area coverage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the swing disk of this utility model; Figure 3 This is a schematic diagram of the wiping assembly of this utility model; Figure 4 This is a schematic diagram of the planar structure of the box body of this utility model.

[0017] In the diagram: 101, swing disk; 102, groove; 104, magnetic frame plate; 105, rubber pad; 106, sliding rod; 107, sliding groove; 108, housing; 109, connecting rod; 110, wiping assembly; 111, wiping head; 112, wiping pad; 113, pull rod; 114, eccentric shaft; 115, rotating disk; 116, drive motor; 117, bottom cover; 118, microcontroller; 119, switch; 120, adjusting knob; 121, power cord; 122, threaded rod; 123, guide rod; 124, insertion rod; 125, first guide block; 126, first adjusting rod; 127, second guide block; 128, second adjusting rod; 129, adjusting screw. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-4 As shown, this utility model provides a technical solution: A polyester film abrasion resistance testing device includes a swing disk 101. A groove 102 is formed at the top of the swing disk 101. A magnetic frame plate 104 is magnetically installed in the groove 102 using magnetic material. A rubber pad 105 is covered at the bottom of the magnetic frame plate 104. Sliding rods 106 are symmetrically installed at the bottom of the swing disk 101. The ends of the sliding rods 106 extend through sliding grooves 107 into the interior of a housing 108. A connecting rod 109 is fixedly installed between the ends of the sliding rods 106. The sliding grooves 107 are symmetrically formed at the top of the housing 108. A wiping assembly 110 is fixedly installed on one side of the top of the housing 108. The wiping assembly 110 includes two wiping heads 111, each with a wiping pad 112 at its bottom. The wiping pads 112 are respectively attached to the bottom surface of the groove 102.

[0020] The above scheme utilizes a groove 102 at the top of the swing disk 101 to accommodate and position the polyester film sample and the magnetic frame plate 104. The magnetic material used within the groove 102 generates an adsorption force on the magnetic frame plate 104. The magnetically installed frame plate 104 quickly presses and fixes the film sample within the groove 102. A rubber pad 105 at the bottom of the frame plate 104 increases the contact friction with the film sample, preventing it from sliding during testing. Sliding rods 106 symmetrically mounted at the bottom of the swing disk 101 transmit the reciprocating motion of the drive mechanism to the swing disk 101. A sliding groove 107 at the end of the sliding rod 106 limits its movement trajectory to a linear reciprocating motion. A connecting rod 109 fixedly mounted between the ends of the sliding rods 106 connects the two sliding rods 106, enabling them to move synchronously. The sliding grooves 107 symmetrically opened at the top of the housing 108 provide guiding support for the movement of the sliding rods 106. The wiping assembly 110, which is fixedly installed on one side of the top of the housing 108, applies wiping pressure to the film surface; the two wiping heads 111 included in the wiping assembly 110 make contact and perform wiping action; the wiping pads 112 covered at the bottom of the wiping heads 111 respectively achieve direct friction with the film surface; the wiping pads 112 are respectively attached to the bottom surface of the groove 102 to ensure that the wiping pads 112 apply continuous and uniform positive pressure to the surface of the film sample.

[0021] In this embodiment, preferably, a pull rod 113 is mounted on the connecting rod 109 via a bearing, and the other end of the pull rod 113 is mounted on an eccentric shaft 114 via a bearing. The eccentric shaft 114 is fixedly mounted on one side of the rotating disk 115.

[0022] The above scheme converts eccentric motion into pulling motion on the connecting rod 109 by means of a pull rod 113 mounted on the connecting rod 109 via a bearing; the other end of the pull rod 113 is mounted on the eccentric shaft 114 via a bearing to connect to the rotary drive source and convert the rotary motion into reciprocating motion; the eccentric shaft 114, which is fixedly mounted on one side of the rotating disk 115, provides the eccentric point of rotation.

[0023] In this embodiment, preferably, the center of the rotating disk 115 is located at the output end of the drive motor 116 via a shaft, the drive motor 116 is bolted to the top of the bottom cover 117, and a microcontroller 118 is bolted to the top of the bottom cover 117 adjacent to the drive motor 116.

[0024] Through the above scheme, the rotational power of the motor is transmitted to the rotating disk 115 through the shaft located at the output end of the drive motor 116; the drive motor 116 is bolted to the top of the bottom cover 117 to provide a stable power source for the entire device; the microcontroller 118, which is bolted to the top of the bottom cover 117 adjacent to the drive motor 116, controls the operating parameters of the drive motor 116.

[0025] In this embodiment, preferably, the bottom cover 117 is bolted to the bottom of the box 108, a switch 119 is installed through the side of the box 108 away from the sliding groove 107, and an adjustment knob 120 is installed through the box 108 adjacent to the switch 119.

[0026] The above scheme achieves the enclosure of the bottom of the housing 108 by bolting the bottom cover 117 to provide a mounting base; the switch 119 installed through the side of the housing 108 away from the sliding groove 107 enables the manual control device circuit to be switched on and off; and the adjustment knob 120 installed through the housing 108 adjacent to the switch 119 enables the adjustment of control parameters.

[0027] In this embodiment, preferably, a power cord 121 is installed through the housing 108 adjacent to the adjustment knob 120, and the corresponding pins of the power cord 121, adjustment knob 120, switch 119, microcontroller 118 and drive motor 116 are respectively connected by flexible wires.

[0028] The above scheme enables the device to be connected to an external power source by a power cord 121 installed through the housing 108 adjacent to the adjustment knob 120; a complete power supply and control circuit is established by connecting the corresponding pins of the power cord 121, adjustment knob 120, switch 119, microcontroller 118 and drive motor 116 with flexible wires.

[0029] In this embodiment, preferably, threaded rods 122 are fixedly installed on the top of the wiping head 111, and the threaded rods 122 are respectively installed on the bottom of the guide rod 123 by threads, and the top of the guide rod 123 is fixedly installed with a plug rod 124.

[0030] The above scheme connects and supports the wiping head 111 by fixing the threaded rods 122 to the top of the wiping head 111; the threaded rods 122 are threadedly installed at the bottom of the guide rod 123 to allow manual adjustment of the height of the wiping head 111; and the insert rod 124 fixedly installed at the top of the guide rod 123 carries and positions the loaded weight.

[0031] In this embodiment, preferably, the guide rods 123 are perpendicularly inserted through one side of the first guide block 125 and are fitted with a clearance, and the first adjusting rods 126 are respectively installed parallel to each other on the side of the first guide block 125 away from the insertion point of the guide rods 123.

[0032] The above scheme ensures that the guide rods 123 can only move in the vertical direction by passing through one side of the first guide block 125, thus ensuring that the applied pressure is in the correct direction; the first adjusting rods 126 installed in parallel on the side of the first guide block 125 away from the point where the guide rods 123 pass through provide the first-stage horizontal moving slide rail.

[0033] In this embodiment, preferably, the other end of the first adjusting rod 126 passes through one side of the second guide block 127 in parallel and with clearance, and the second guide block 127 has a second adjusting rod 128 passing through it vertically on the side away from the first adjusting rod 126 and with clearance.

[0034] With the above scheme, the first adjusting rod 126 is allowed to slide horizontally within the second guide block 127 by having the other end of the first adjusting rod 126 pass through one side of the second guide block 127 in parallel; and the second adjusting rod 128, which passes through the side of the second guide block 127 away from the first adjusting rod 126 vertically, provides a second-stage vertical moving slide rail.

[0035] In this embodiment, preferably, the second adjusting rods 128 are symmetrically installed on one side of the top of the housing 108, and adjusting screws 129 are threadedly installed on both sides of the second guide block 127, with the ends of the adjusting screws 129 abutting against the first adjusting rod 126 and the second adjusting rod 128 respectively.

[0036] With the above scheme, the vertical support base of the entire upper adjustment mechanism is fixed by symmetrically installing the second adjustment rods 128 on one side of the top of the box 108; the second guide block 127 and the first adjustment rod 126 are locked after manual adjustment of the position by adjusting screws 129 installed on both sides of the second guide block 127 to prevent displacement during the test.

[0037] In this embodiment, when using a polyester film abrasion resistance testing device, the polyester film sample is first cut to a suitable size and placed in the groove 102 at the top of the swing disk 101. To fix the sample, the magnetic frame plate 104 is conveniently attracted to the magnetic material area embedded in the groove 102 by its built-in magnetic attraction force, thus completing a quick and reliable clamping.

[0038] Specifically, a soft rubber pad 105 is attached to the bottom of the magnetic frame plate 104. When the magnetic frame plate 104 adsorbs and presses the film sample, the rubber pad 105 increases the frictional resistance of the contact surface due to its smooth properties, effectively preventing the film from accidentally sliding or shifting during subsequent wiping tests, and providing a stable initial condition guarantee for the test results. Before the test, according to the preset pressure requirements, a weight of corresponding weight can be placed on the insertion rod 124. Since the diameter of the insertion rod 124 is smaller than that of the guide rod 123, the weight is naturally limited when it falls to the top of the guide rod 123, thereby ensuring that the gravity load is completely transmitted vertically downward through the guide rod 123.

[0039] The downward pressure of the guide rod 123 is transmitted to the wiping head 111 through the threaded rod 122 connected to its bottom thread, ultimately causing the wiping pad 112 at the bottom of the wiping head 111 to adhere tightly, stably, and evenly to the surface of the film sample to be tested, accurately simulating the actual wiping force state. After the device is started, the drive motor 116 rotates, driving the rotating disk 115 fixed on its output shaft to rotate. The eccentric shaft 114 fixed to the edge of the rotating disk 115 moves in a circular motion with the disk, thereby periodically pulling one end of the pulling rod 113, which is hinged to it by a bearing. The other end of the pulling rod 113 is also hinged to the connecting rod 109 by a bearing. The circular motion of the spindle 114 is converted into a reciprocating push-pull motion along its own length by the pull rod 113. This push-pull motion drives the connecting rod 109 to move back and forth in the horizontal plane. Since the two ends of the connecting rod 109 are respectively fixed to the ends of the two sliding rods 106, the two sliding rods 106 slide precisely in a straight line along the symmetrical sliding grooves 107 opened at the top of the box 108 under the drive of the connecting rod 109. The reciprocating motion of the sliding rods 106 is finally transmitted to the swing disk 101 fixedly installed at its top, which drives the film sample firmly held by the magnetic frame plate 104 to perform a smooth and continuous frictional motion under the wiping pad 112.

[0040] This motion trajectory simulates the actual wiping process, where the thin film sample endures reciprocating friction from the designated wiping pad 112 material under a set pressure. By turning two sets of adjusting screws 129, precise fine-tuning of the wiping head 111's position can be achieved. One set of adjusting screws 129 acts on the second guide block 127. After manually adjusting the second guide block 127 to the desired height along the second adjusting rod 128, tightening this set of adjusting screws 129 so that its end presses against the second adjusting rod 128 securely locks the vertical position of the second guide block 127. This operation directly determines the position of the guide rod 123 tip relative to the insertion rod. The exposed state of the limiting structure at the connection 124 relative to the first guide block 125—if the limiting structure does not protrude above the first guide block 125, it cannot effectively bear the weight of the weight. By manually lifting and locking the second guide block 127, the exposed and usable limiting structure can be ensured. At the same time, another set of adjusting screws 129 acts on the second guide block 127. After manually sliding the first adjusting rod 126 horizontally to the target position within the second guide block 127, tightening this set of adjusting screws 129 so that its end presses against the first adjusting rod 126 can reliably lock the horizontal displacement of the first adjusting rod 126.

[0041] Since the guide rod 123 and the wiping head 111 assembly are rigidly connected to the first adjusting rod 126 through the first guide block 125, the horizontal locking of the first adjusting rod 126 means that the spatial position of the entire wiping mechanism is fixed. This dual locking mechanism effectively overcomes the risk of displacement caused by vibration or load during the test, and ensures the long-term stability of the wiping pressure application point. This lockable position adjustment capability allows users to accurately position and fix the action point of the wiping pad 112 according to the size of the film sample or the requirements of the test area. This unique three-way position adjustment capability (vertical and horizontal one-dimensional) allows users to flexibly and accurately position the action points of the two wiping pads 112 on the film surface according to the size of the film sample or the requirements of the test area, ensuring that the wiping test can specifically cover the key areas of the sample or achieve rapid switching of multiple test modes. The microcontroller 118 integrated in the housing 108 is responsible for controlling the start and stop, speed, and possible cycle count of the drive motor 116; the switch 119 provides the start and stop operation of the device; the adjustment knob 120 is used to set the motor operating parameters; the power cord 121 supplies power to the entire system. Together, these enable convenient control and setting of key test parameters such as wiping rate and number of times. The entire device achieves standardized, automated, and repeatable quantitative evaluation of the wiping resistance of polyester film through the coordinated work of multiple components, such as magnetic quick clamping, rubber anti-slip design, constant pressure achieved by weights, precise conversion of rotary motion into linear reciprocating friction by crank-slider mechanism, and fine position adjustment. It accurately assesses the wear resistance of polyester film under long-term friction environment.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the abrasion resistance of polyester film, comprising a oscillating disk (101), characterized in that: The top of the swing disk (101) has a groove (102). A magnetic frame plate (104) is magnetically installed in the groove (102) using magnetic material. The bottom of the magnetic frame plate (104) is covered with a thin rubber pad (105). Sliding rods (106) are symmetrically installed at the bottom of the swing disk (101). The ends of the sliding rods (106) extend through sliding grooves (107) into the housing (108). A connecting rod (109) is fixedly installed between the ends of (106). The sliding groove (107) is symmetrically opened at the top of the box (108). A wiping assembly (110) is fixedly installed on one side of the top of the box (108). The wiping assembly (110) includes two wiping heads (111). The bottom of the wiping heads (111) is covered with wiping pads (112). The wiping pads (112) are respectively attached to the bottom surface of the groove (102).

2. The polyester film abrasion resistance testing device according to claim 1, characterized in that: A pull rod (113) is mounted on the connecting rod (109) via a bearing. The other end of the pull rod (113) is mounted on an eccentric shaft (114) via a bearing. The eccentric shaft (114) is fixedly mounted on one side of the rotating disk (115).

3. The polyester film abrasion resistance testing device according to claim 2, characterized in that: The center of the rotating disk (115) is located at the output end of the drive motor (116) via a shaft. The drive motor (116) is bolted to the top of the bottom cover (117). A microcontroller (118) is bolted to the top of the bottom cover (117) adjacent to the drive motor (116).

4. The polyester film abrasion resistance testing device according to claim 3, characterized in that: The bottom cover (117) is bolted to the bottom of the box (108). A switch (119) is installed through the side of the box (108) away from the sliding groove (107). An adjustment knob (120) is installed through the box (108) adjacent to the switch (119).

5. The abrasion resistance testing device for polyester film according to claim 4, characterized in that: A power cord (121) is installed through the housing (108) adjacent to the adjustment knob (120). The corresponding pins of the power cord (121), adjustment knob (120), switch (119), microcontroller (118), and drive motor (116) are connected by flexible wires.

6. The abrasion resistance testing device for polyester film according to claim 1, characterized in that: The top of the wiping head (111) is fixedly installed with threaded rods (122), and the threaded rods (122) are respectively installed at the bottom of the guide rod (123) by threads. The top of the guide rod (123) is fixedly installed with a plug rod (124).

7. The abrasion resistance testing device for polyester film according to claim 6, characterized in that: The guide rods (123) are perpendicularly inserted through one side of the first guide block (125) with clearance fit, and the first adjusting rods (126) are installed parallel to each other on the side of the first guide block (125) away from the insertion point of the guide rods (123).

8. The abrasion resistance testing device for polyester film according to claim 7, characterized in that: The other end of the first adjusting rod (126) passes through one side of the second guide block (127) in parallel and with clearance. The second guide block (127) has a second adjusting rod (128) passing through it vertically on the side away from the first adjusting rod (126) and with clearance.

9. The polyester film abrasion resistance testing device according to claim 8, characterized in that: The second adjusting rod (128) is symmetrically installed on one side of the top of the box (108). The two sides of the second guide block (127) are respectively threaded with adjusting screws (129), and the ends of the adjusting screws (129) abut against the first adjusting rod (126) and the second adjusting rod (128).

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