Tear resistance testing device for packaging film

Abstract

The utility model discloses a packaging film tear resistance testing device, and relates to the technical field of packaging film tear resistance testing. When the tear resistance testing device is used, a first air cylinder drives a rack to slide, a mounting shaft drives a limiting plate to rotate in cooperation with a gear, the limiting plate and a fixing ring limit the position of a packaging film, but the packaging film can still rotate in a containing groove, and a first motor is started to drive a first two-way lead screw to rotate; under the limiting effect of the sliding rail, the two sets of fixing blocks drive the first mounting base and the second mounting base to synchronously and reversely slide, and in the synchronous and reverse sliding process of the first mounting base and the second mounting base, the packaging film is flatly unfolded between the first mounting base and the second mounting base under the effect of a limiting plate and a fixing ring; and the problem of poor flattening effect possibly caused by manually flattening the to-be-tested packaging film by a worker is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging film tear resistance testing, in particular to a packaging film tear resistance testing device. Background Art

[0002] Plastic packaging film refers to a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, which is used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly larger share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields, among which food packaging accounts for the largest proportion, such as beverage packaging, quick-frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives.

[0003] Refer to the Chinese patent application number: "CN201921351016.1" "A plastic packaging film tear test positioning structure", which solves the problem that "in the production of plastic packaging film, the prepared plastic packaging film needs to be tested for tear strength, and the positioning structure used in conjunction with the test device during the test is extremely important. It accurately and stably fixes the plastic packaging film to be tested to complete the next test action. The rationality of the positioning structure design will directly affect the efficiency of the test device's tear strength test and the accuracy of the test results."

[0004] However, the existing testing device still requires the staff to manually smooth the film and then fix its two ends when using it. However, there are still certain errors in manual smoothing. Although the film is fixed quickly, the flatness is not good, which will also cause certain errors in the subsequent tear resistance test process.

[0005] To this end, we proposed a packaging film tear resistance testing device to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a packaging film tear resistance testing device, which solves the problem that the existing testing device still requires workers to manually smooth the film before fixing both ends when using it, but manual smoothing still has certain errors. Although the film is fixed quickly, the flattening effect is not good, which will also cause certain errors in the subsequent tear resistance test process.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a packaging film tear resistance testing device, comprising:

[0008] Bracket;

[0009] Packaging film;

[0010] A slide rail, wherein the slide rail is fixedly mounted on the bracket;

[0011] A first mounting seat and a second mounting seat, wherein the first mounting seat and the second mounting seat are symmetrically distributed on the bracket;

[0012] A leveling device, the leveling device is located on the first mounting seat;

[0013] A positioning mechanism, the positioning mechanism is located below the first mounting seat and the second mounting seat;

[0014] The adjusting mechanism is located below the positioning mechanism.

[0015] Preferably, the leveling device comprises a fixing ring and a limiting plate, a placement groove is provided between the fixing ring and the first mounting seat, and the limiting plate is rotatably connected to the fixing ring via a mounting shaft.

[0016] Preferably, a gear is sleeved on the mounting shaft, a rack is provided in the fixing ring, a first cylinder is provided in the fixing ring, and the rack is slidably connected to the fixing ring under the control of the first cylinder, and the rack is meshingly connected to the gear.

[0017] Preferably, the positioning mechanism includes two groups of symmetrically distributed fixed blocks and a first bidirectional screw, a first motor is provided on the bracket, and both ends of the first bidirectional screw respectively pass through the bracket and are rotatably connected therebetween, the first bidirectional screw respectively passes through the two groups of fixed blocks and are respectively threadedly connected to the two groups of fixed blocks, the two groups of fixed blocks are respectively fixedly mounted on the first mounting seat and the second mounting seat, the left end of the first bidirectional screw is connected to the output end of the first motor, and the two groups of fixed blocks are both slidably sleeved with the slide rail.

[0018] Preferably, a card slot is provided on the first mounting seat and the second mounting seat, a mounting frame is provided on the first mounting seat and the second mounting seat, a second cylinder is provided on the mounting frame, a pressure rod is provided under the mounting frame, a card block is provided on the pressure rod, and the pressure rod and the card block are both arranged corresponding to the card slot, and the pressure rod is connected to the output end of the piston rod of the second cylinder.

[0019] Preferably, the adjustment mechanism includes two groups of symmetrically distributed connecting blocks and a second bidirectional screw rod, a sliding groove is opened on the bracket, a second motor is arranged on the bracket, and the two groups of connecting blocks are fixedly connected to the two groups of fixed blocks respectively, the two groups of connecting blocks are slidingly sleeved with the second bidirectional screw rod, and the two ends of the second bidirectional screw rod respectively pass through the bracket and are rotatably connected with the bracket, and the left end of the second bidirectional screw rod is connected to the output end of the second motor.

[0020] Preferably, a spring is sleeved on the second bidirectional screw rod, and two groups of stop blocks are symmetrically distributed on the second bidirectional screw rod. A slider is provided under the stop block, and the stop block is slidably connected to the bracket through the slider and the slide groove, and the second bidirectional screw rod passes through the two groups of stop blocks respectively and is threadedly connected to the stop blocks, and the two ends of the spring are fixedly connected to the corresponding stop blocks and the connecting block respectively.

[0021] Beneficial Effects

[0022] The utility model provides a packaging film tear resistance testing device. Compared with the prior art, it has the following beneficial effects:

[0023] When the tearing resistance testing device is in use, first, one end of the packaging film is placed on the second mounting seat and the second cylinder drives the pressure rod to cooperate with the card slot to fix the right end of the packaging film. The remaining part of the packaging film is placed in the placement groove, and the rack is driven to slide by the first cylinder, and the mounting shaft drives the limit plate to rotate in cooperation with the gear. The limit plate and the fixing ring limit the position of the packaging film, but the packaging film can still rotate in the placement groove, and the first motor is started to drive the first bidirectional screw to rotate, and under the limiting action of the slide rail, the two groups of fixing blocks drive the first mounting seat and the second mounting seat to slide synchronously in the opposite direction. In the process of the synchronous reverse sliding of the first mounting seat and the second mounting seat, the packaging film is flatly unfolded between the first mounting seat and the second mounting seat under the action of the limit plate and the fixing ring, so as to avoid the problem of poor flattening effect caused by the staff manually smoothing the packaging film to be tested. After the packaging film is unfolded between the first mounting seat and the second mounting seat, the second cylinder on the first mounting seat is started to cooperate with the pressure rod and the card slot to fix the other end of the packaging film, and then the tearing resistance test can be started. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional view of the utility model as a whole;

[0025] Figure 2 It is a three-dimensional view of the positioning mechanism of the utility model;

[0026] Figure 3 This is a three-dimensional view of the first mounting base of the utility model;

[0027] Figure 4 For this utility model Figure 3 -A is an enlarged stereoscopic view of the structure.

[0028] In the figure: 1. bracket; 2. slide rail; 3. first mounting seat; 4. second mounting seat; 5. packaging film; 6. leveling device; 601. fixing ring; 602. limiting plate; 603. placement groove; 604. mounting shaft; 605. gear; 606. rack; 607. first cylinder; 7. positioning mechanism; 701. fixing block; 702. slot; 703. pressure rod; 704. blocking block; 705. second cylinder; 706. mounting bracket; 707. first bidirectional lead screw; 708. first motor; 8. adjusting mechanism; 801. connecting block; 802. second bidirectional lead screw; 803. spring; 804. stop block; 805. limiting block; 806. limiting slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 4 The technical solution provided by the utility model specifically includes the following embodiments:

[0031] A packaging film tear resistance testing device, comprising

[0032] Bracket 1;

[0033] Packaging film 5;

[0034] A slide rail 2, wherein the slide rail 2 is fixedly mounted on the bracket 1;

[0035] A first mounting seat 3 and a second mounting seat 4, wherein the first mounting seat 3 and the second mounting seat 4 are symmetrically distributed on the bracket 1;

[0036] A leveling device 6, wherein the leveling device 6 is located on the first mounting seat 3;

[0037] A positioning mechanism 7, which is located below the first mounting seat 3 and the second mounting seat 4;

[0038] The adjusting mechanism 8 is located below the positioning mechanism.

[0039] In the present utility model: the leveling device 6 includes a fixing ring 601 and a limiting plate 602, a placement groove 603 is provided between the fixing ring 601 and the first mounting seat 3, and the limiting plate 602 is rotatably connected to the fixing ring 601 through a mounting shaft 604;

[0040] More specifically, the position of the packaging film 5 is limited by providing a fixing ring 601 and a limiting plate 602 , so that the packaging film 5 can be smoothly unfolded during the synchronous movement of the first mounting seat 3 and the second mounting seat 4 .

[0041] In the present invention: a gear 605 is sleeved on the mounting shaft 604, a rack 606 is provided in the fixing ring 601, a first cylinder 607 is provided in the fixing ring 601, and the rack 606 is slidably connected with the fixing ring 601 under the control of the first cylinder 607, and the rack 606 is meshedly connected with the gear 605;

[0042] More specifically, the first cylinder 607 drives the rack 606 to slide, and cooperates with the gear 605 to rotate the limiting plate 602, so as to place the packaging film 5 in the placement groove 603, and rotate the limiting plate 602 to cooperate with the fixing ring 601 to limit the position of the packaging film 5.

[0043] In the utility model: the positioning mechanism 7 includes two groups of symmetrically distributed fixed blocks 701 and a first bidirectional screw 707, a first motor 708 is provided on the bracket 1, and the two ends of the first bidirectional screw 707 respectively penetrate the bracket 1 and are rotatably connected therebetween, the first bidirectional screw 707 respectively penetrates the two groups of fixed blocks 701 and is respectively threadedly connected to the two groups of fixed blocks 701, the two groups of fixed blocks 701 are respectively fixedly installed with the first mounting seat 3 and the second mounting seat 4, the left end of the first bidirectional screw 707 is connected to the output end of the first motor 708, and the two groups of fixed blocks 701 are both slidably sleeved with the slide rail 2;

[0044] More specifically, the first motor 708 drives the first bidirectional screw 707 to rotate, and under the limiting action of the slide rail 2, the two sets of fixed blocks 701 drive the first mounting seat 3 and the second mounting seat 4 to move smoothly in opposite directions, so as to smoothly unfold the packaging film 5 and perform tear resistance testing.

[0045] In the present utility model: a slot 702 is provided on the first mounting seat 3 and the second mounting seat 4, a mounting frame 706 is provided on the first mounting seat 3 and the second mounting seat 4, a second cylinder 705 is provided on the mounting frame 706, a pressure rod 703 is provided below the mounting frame 706, a block 704 is provided on the pressure rod 703, and the pressure rod 703 and the block 704 are both arranged corresponding to the slot 702, and the pressure rod 703 is connected to the output end of the piston rod of the second cylinder 705;

[0046] More specifically, the packaging film 5 is fixed by providing the pressing rod 703, the clamping block 704 and the clamping slot 702 to prevent the packaging film 5 from being disengaged during the tearing test.

[0047] In the utility model: the adjustment mechanism 8 includes two groups of symmetrically distributed connection blocks 801 and a second bidirectional screw 802, a limiting groove 806 is provided on the bracket 1, a second motor is provided on the bracket 1, and the two groups of connection blocks 801 are respectively fixedly connected to the two groups of fixed blocks 701, the two groups of connection blocks 801 are both slidably sleeved with the second bidirectional screw 802, and the two ends of the second bidirectional screw 802 respectively penetrate the bracket 1 and are rotatably connected to the bracket 1, and the left end of the second bidirectional screw 802 is connected to the output end of the second motor;

[0048] More specifically, the distance between the two sets of blocks 804 is adjusted by the second bidirectional screw rod 802;

[0049] In the present invention: a spring 803 is sleeved on the second bidirectional screw rod 802, two groups of stoppers 804 are symmetrically distributed on the second bidirectional screw rod 802, a limit block 805 is provided below the stopper 804, and the stopper 804 is slidably connected to the bracket 1 through the limit block 805 and the limit groove 806, and the second bidirectional screw rod 802 respectively passes through the two groups of stoppers 804 and is threadedly connected to the stoppers 804, and the two ends of the spring 803 are fixedly connected to the corresponding stoppers 804 and the connecting block 801 respectively;

[0050] More specifically, the movement of the connecting block 801 and the fixing block 701 on the bracket 1 is restrained to a certain extent by the spring 803, and the resistance to the movement of the fixing block 701 is adjusted, so that the staff can adjust the tension of the test device to a certain extent according to different test requirements.

[0051] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0052] When the tear resistance testing device is used, one end of the packaging film 5 is first placed on the second mounting seat 4, and the second cylinder 705 drives the pressure rod 703 to cooperate with the card slot 702 to reversely fix the right end of the packaging film 5. The remaining part of the packaging film 5 is placed in the placement groove 603, and the first cylinder 607 drives the rack 606 to slide, and cooperates with the gear 605 to make the installation shaft 604 drive the limit plate 602 to rotate. The limit plate 602 and the fixing ring 601 limit the position of the packaging film 5, but the packaging film 5 can still be placed in the placement groove 603 rotates, starting the first motor 708 to drive the first bidirectional screw rod 707 to rotate, and under the limiting action of the slide rail 2, the two sets of fixed blocks 701 drive the first mounting seat 3 and the second mounting seat 4 to slide synchronously in the opposite direction. During the synchronous reverse sliding of the first mounting seat 3 and the second mounting seat 4, the packaging film 5 is flatly unfolded between the first mounting seat 3 and the second mounting seat 4 under the action of the limiting plate 602 and the fixing ring 601, avoiding the problem of poor flattening effect caused by manual smoothing of the packaging film 5 to be tested by the staff.

[0053] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A packaging film (5) tear resistance testing device, characterized in that: include Bracket (1); Packaging film (5); A slide rail (2), wherein the slide rail (2) is fixedly mounted on the bracket (1); A first mounting seat (3) and a second mounting seat (4), wherein the first mounting seat (3) and the second mounting seat (4) are symmetrically distributed on the bracket (1); A leveling device (6), wherein the leveling device (6) is located on the first mounting seat (3); A positioning mechanism (7), the positioning mechanism being located below the first mounting seat (3) and the second mounting seat (4); An adjusting mechanism (8), wherein the adjusting mechanism (8) is located below the positioning mechanism.

2. A packaging film (5) tear resistance testing device according to claim 1, characterized in that: The leveling device (6) comprises a fixing ring (601) and a limiting plate (602); a placement groove (603) is provided between the fixing ring (601) and the first mounting seat (3); and the limiting plate (602) is rotatably connected to the fixing ring (601) via a mounting shaft (604).

3. A packaging film (5) tear resistance testing device according to claim 2, characterized in that: A gear (605) is sleeved on the mounting shaft (604), a rack (606) is provided in the fixing ring (601), a first cylinder (607) is provided in the fixing ring (601), and the rack (606) is slidably connected to the fixing ring (601) under the control of the first cylinder (607), and the rack (606) is meshedly connected to the gear (605).

4. A packaging film (5) tear resistance testing device according to claim 1, characterized in that: The positioning mechanism (7) comprises two groups of symmetrically distributed fixed blocks (701) and a first bidirectional screw rod (707); a first motor (708) is provided on the bracket (1); two ends of the first bidirectional screw rod (707) respectively penetrate the bracket (1) and are rotatably connected therebetween; the first bidirectional screw rod (707) respectively penetrates the two groups of fixed blocks (701) and is respectively threadedly connected to the two groups of fixed blocks (701); the two groups of fixed blocks (701) are respectively fixedly mounted on the first mounting seat (3) and the second mounting seat (4); the left end of the first bidirectional screw rod (707) is connected to the output end of the first motor (708); and the two groups of fixed blocks (701) are both slidably sleeved on the slide rail (2).

5. A packaging film (5) tear resistance testing device according to claim 1, characterized in that: The first mounting seat (3) and the second mounting seat (4) are both provided with a slot (702); the first mounting seat (3) and the second mounting seat (4) are both provided with a mounting frame (706); the mounting frame (706) is provided with a second cylinder (705); a pressure rod (703) is provided below the mounting frame (706); a block (704) is provided on the pressure rod (703); the pressure rod (703) and the block (704) are both provided corresponding to the slot (702); the pressure rod (703) is connected to the output end of the piston rod of the second cylinder (705).

6. A packaging film (5) tear resistance testing device according to claim 1, characterized in that: The adjusting mechanism (8) comprises two groups of symmetrically distributed connecting blocks (801) and a second bidirectional screw rod (802); a limiting groove (806) is provided on the bracket (1); a second motor is provided on the bracket (1); the two groups of connecting blocks (801) are respectively fixedly connected to the two groups of fixing blocks (701); the two groups of connecting blocks (801) are both slidably sleeved with the second bidirectional screw rod (802); the two ends of the second bidirectional screw rod (802) respectively penetrate the bracket (1) and are rotatably connected to the bracket (1); and the left end of the second bidirectional screw rod (802) is connected to the output end of the second motor.

7. A packaging film (5) tear resistance testing device according to claim 6, characterized in that: A spring (803) is sleeved on the second bidirectional screw rod (802), and two groups of stop blocks (804) are symmetrically distributed on the second bidirectional screw rod (802). A limit block (805) is provided below the stop block (804), and the stop block (804) is slidably connected to the bracket (1) through the limit block (805) and the limit groove (806), and the second bidirectional screw rod (802) respectively passes through the two groups of stop blocks (804) and is threadedly connected to the stop blocks (804), and the two ends of the spring (803) are fixedly connected to the corresponding stop blocks (804) and the connecting block (801) respectively.

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