Tensile testing machine for detecting composite film bag for food packaging

Abstract

The utility model discloses a tensile testing machine for detecting a composite film bag for food packaging, which comprises a base, a fixed frame and an operation screen are arranged on the base, a reciprocating lead screw mechanism is arranged in the fixed frame, a tension sensor is arranged at one end of the reciprocating lead screw mechanism, an upper clamping component is arranged at the bottom of the tension sensor, and a lower clamping component is arranged at the other end of the reciprocating lead screw mechanism. A lower clamping assembly is arranged at the bottom of the upper clamping assembly, a collecting assembly is arranged at the bottom of the lower clamping assembly, and the upper clamping assembly and the lower clamping assembly are the same in structure; the collecting assembly comprises a barrel fixed to the top of the base, a fan cover is arranged in the barrel and is in a funnel shape, an interlayer is arranged on the outer side of the fan cover, an adsorption fan is arranged in the interlayer, and the inner wall of the fan cover is of a mesh-shaped structure. According to the device, waste composite film bag samples can be automatically collected and crushed after the composite film bag samples are subjected to a tension test, so that waste caused by discarding of the composite film bag samples is avoided, and the collected composite film bag samples can be recycled and reused.

Description

Technical Field

[0001] The utility model relates to the technical field of stretching machines, in particular to a stretching testing machine for testing composite film bags for food packaging. Background Art

[0002] A film composed of two or more materials is called a composite film. It is generally made of plastic, aluminum foil, paper and other materials by bonding, heat sealing and other methods. It has a protective function; a bag made of a composite film is called a composite film bag.

[0003] At present, in order to ensure the quality of composite film bags, it is necessary to take samples of the composite film bags after production and use a composite film tensile machine to perform a tensile test. However, after the existing composite film bags are tested using a composite film tensile machine, some composite film bag samples need to be retained, and some composite film bag samples are usually discarded directly, resulting in a waste of composite film bag samples. Utility Model Content

[0004] The purpose of the utility model is to provide a tensile testing machine for testing composite film bags for food packaging, so as to solve the problem in the background art that composite film bag samples are directly discarded after being tested using a composite film tensile testing machine, which is a waste.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a tensile testing machine for testing composite film bags for food packaging, comprising a base, a fixing frame and an operating screen provided on the base, a reciprocating screw mechanism provided inside the fixing frame, a tension sensor provided at one end of the reciprocating screw mechanism, an upper clamping assembly provided at the bottom of the tension sensor, a lower clamping assembly provided at the bottom of the upper clamping assembly, a collecting assembly provided at the bottom of the lower clamping assembly, and the upper clamping assembly and the lower clamping assembly having the same structure;

[0006] The collecting assembly includes a cylinder fixed to the top of the base, a funnel-shaped wind hood is provided inside the cylinder, an interlayer is provided on the outside of the wind hood, an adsorption fan is provided inside the interlayer, and the inner wall of the wind hood is a mesh-shaped structure;

[0007] The lower clamping assembly includes a fixed platform located at the top of the cylinder, a through hole is opened on the fixed platform, the fixed platform is connected to the cylinder, a fixed plate is fixedly connected to the top side of the fixed platform, and a clamping block is movably connected to the inner side of the fixed plate.

[0008] Preferably, the bottom of the cylinder is an inclined structure, an opening is provided on one side of the cylinder, and a door is hinged on one side of the opening.

[0009] Preferably, a first knife roller and a second knife roller are rotatably connected inside the cylinder, and the first knife roller is located on top of the second knife roller.

[0010] Preferably, one end of the cylinder is fixedly connected to a drive motor, and the shaft of the drive motor is connected to one side of the first knife roller.

[0011] Preferably, a belt is sleeved on the shaft of the driving motor, and one end of the belt is sleeved on the shaft on one side of the second knife roller.

[0012] Preferably, a hydraulic cylinder is fixedly connected to one side of the fixed plate, and one end of the hydraulic cylinder is connected to the clamping block.

[0013] Preferably, the clamping block, the fixing plate and the hydraulic cylinder are all distributed bilaterally symmetrically with respect to the bisector of the fixing platform.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) This device can automatically collect and crush the discarded composite film bag samples after the composite film bag samples undergo tensile testing, thereby avoiding the waste caused by discarding the composite film bag samples and can recycle the collected composite film bag samples for reuse.

[0016] (2) This device sets a collection component at the bottom of the fixed table. After the composite film bag sample clamped on the fixed table completes the tensile test, the composite film bag sample is loosened and the adsorption fan is started at the same time. The composite film bag sample can be sucked into the cylinder for crushing, which is convenient for subsequent recycling and reuse, reducing the waste of directly discarding the composite film bag sample.

[0017] (3) This device can crush the collected composite film bag samples by arranging the first knife roller and the second knife roller inside the cylinder, thereby shortening the subsequent recycling process and realizing the automatic collection of discarded composite film bag samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a tensile testing machine for testing composite film bags for food packaging in the utility model;

[0019] Figure 2 This is a cross-sectional view of the connection between the cylinder and the fixed platform of a tensile testing machine for testing composite film bags for food packaging in the utility model;

[0020] Figure 3 The utility model is a top view of the connection between the cylinder and the fixed platform of a tensile testing machine for testing composite film bags for food packaging.

[0021] In the figure: 1. Operation screen; 2. Base; 3. Fixed frame; 4. Reciprocating screw mechanism; 5. Upper clamping assembly; 6. Lower clamping assembly; 61. Hydraulic cylinder; 62. Fixed platform; 63. Fixed plate; 64. Clamping block; 7. Collecting assembly; 71. Adsorption fan; 72. Wind hood; 73. First knife roller; 74. Second knife roller; 75. Drive motor; 76. Belt; 77. Door body; 78. Cylinder body; 8. Tension sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3 The utility model provides a technical solution: a tensile testing machine for testing composite film bags for food packaging, comprising a base 2, a fixing frame 3 and an operating screen 1 are provided on the base 2, a reciprocating screw mechanism 4 is provided inside the fixing frame 3, a tension sensor 8 is provided at one end of the reciprocating screw mechanism 4, an upper clamping assembly 5 is provided at the bottom of the tension sensor 8, a lower clamping assembly 6 is provided at the bottom of the upper clamping assembly 5, a collecting assembly 7 is provided at the bottom of the lower clamping assembly 6, and the upper clamping assembly 5 and the lower clamping assembly 6 have the same structure;

[0024] The collecting assembly 7 includes a cylinder 78 fixed to the top of the base 2, the bottom of the cylinder 78 is an inclined structure, an opening is provided on one side of the cylinder 78, and a door 77 is hinged on one side of the opening; this structure facilitates the entry of composite film bag samples from the top of the cylinder 78, while the opening on one side of the cylinder 78 is convenient for taking out the crushed composite film bag samples; the first knife roller 73 and the second knife roller 74 are rotatably connected inside the cylinder 78, and the first knife roller 73 is located on the top of the second knife roller 74; one end of the cylinder 78 is fixedly connected to the drive motor 75, and the shaft of the drive motor 75 is connected to one side of the first knife roller 73; a belt 76 is provided on the shaft of the drive motor 75, and one end of the belt 76 is provided on the shaft on one side of the second knife roller 74; this structure can simultaneously drive the first knife roller 73 through the drive motor 75 and the belt 76 The first and second knife rollers 73 and 74 rotate, and the blades on the first and second knife rollers 74 are staggered. The first and second knife rollers 73 and 74 can crush and recycle the discarded composite film bag samples by rotating, which is convenient for secondary processing and reuse, thereby reducing the waste of discarded composite film bag samples; an air hood 72 is provided inside the cylinder 78, and the air hood 72 is funnel-shaped. An interlayer is provided on the outside of the air hood 72, and an adsorption fan 71 is provided inside the interlayer. The inner wall of the air hood 72 is a mesh-shaped structure; by setting the adsorption fan 71, the discarded composite film bag samples can be sucked into the air hood 72 by suction. When the composite film bag samples enter the air hood 72, the adsorption fan 71 is turned off, and the composite film bag samples can automatically fall into the bottom of the cylinder 78 for crushing.

[0025] The lower clamping assembly 6 includes a fixed platform 62 located at the top of the cylinder 78, and a through hole is opened on the fixed platform 62. The fixed platform 62 is connected to the cylinder 78. A fixed plate 63 is fixedly connected to the top side of the fixed platform 62, and a hydraulic cylinder 61 is fixedly connected to one side of the fixed plate 63. One end of the hydraulic cylinder 61 is connected to the clamping block 64; the clamping block 64, the fixed plate 63 and the hydraulic cylinder 61 are all symmetrically distributed about the bisector of the fixed platform 62; this structure can push the fixed plate 63 to automatically clamp the composite film bag sample through the hydraulic cylinder 61, thereby ensuring stability during the composite film bag inspection process; the clamping block 64 is movably connected to the inner side of the fixed plate 63.

[0026] Working principle: When using the tensile testing machine for testing composite film bags for food packaging, first place the two ends of the composite film bag sample on the inner sides of the clamping blocks 64 of the upper clamping assembly 5 and the lower clamping assembly 6 respectively, and then the hydraulic cylinders 61 of the upper clamping assembly 5 and the lower clamping assembly 6 are started, and the hydraulic cylinders 61 push the clamping blocks 64 to clamp and fix the composite film bag sample. Then the reciprocating screw mechanism 4 drives the tension sensor 8 to move upward. During the movement, the tension sensor 8 detects the tension of the composite film bag sample clamped at the bottom of the upper clamping assembly 5. When the test work is completed, the clamping blocks 64 of the upper clamping assembly 5 and the lower clamping assembly 6 are opened at the same time, and at the same time the adsorption fan 71 is started. At this time, the composite film bag sample enters the interior of the cylinder 78 under the action of suction, and then the adsorption fan 71 is turned off. The composite film bag sample falls and contacts the first knife roller 73 and the second knife roller 74 for crushing. After the powder work is completed, it is concentrated at the bottom of the cylinder 78 and waits to be taken out for subsequent processing.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tensile testing machine for testing composite film bags for food packaging, comprising a base (2), a fixing frame (3) and an operating screen (1) provided on the base (2), a reciprocating screw mechanism (4) provided inside the fixing frame (3), and characterized in that: A tension sensor (8) is provided at one end of the reciprocating screw mechanism (4), an upper clamping assembly (5) is provided at the bottom of the tension sensor (8), a lower clamping assembly (6) is provided at the bottom of the upper clamping assembly (5), and a collecting assembly (7) is provided at the bottom of the lower clamping assembly (6), and the upper clamping assembly (5) and the lower clamping assembly (6) have the same structure; The collecting assembly (7) includes a cylinder (78) fixed to the top of the base (2), a wind hood (72) is provided inside the cylinder (78), the wind hood (72) is funnel-shaped, an interlayer is provided on the outside of the wind hood (72), an adsorption fan (71) is provided inside the interlayer, and the inner wall of the wind hood (72) is a mesh-shaped structure; The lower clamping assembly (6) includes a fixed platform (62) located at the top of the cylinder (78), a through hole is opened on the fixed platform (62), the fixed platform (62) is connected to the cylinder (78), a fixed plate (63) is fixedly connected to the top side of the fixed platform (62), and a clamping block (64) is movably connected to the inner side of the fixed plate (63).

2. The tensile testing machine for testing composite film bags for food packaging according to claim 1, characterized in that: The bottom of the cylinder (78) is in an inclined structure, and an opening is provided on one side of the cylinder (78), and a door (77) is hingedly connected to one side of the opening.

3. The tensile testing machine for testing composite film bags for food packaging according to claim 1, characterized in that: A first knife roller (73) and a second knife roller (74) are rotatably connected inside the cylinder (78), and the first knife roller (73) is located on top of the second knife roller (74).

4. The tensile testing machine for testing composite film bags for food packaging according to claim 1, characterized in that: One end of the cylinder (78) is fixedly connected to a drive motor (75), and the shaft of the drive motor (75) is connected to one side of the first knife roller (73).

5. The tensile testing machine for testing composite film bags for food packaging according to claim 4, characterized in that: A belt (76) is sleeved on the shaft of the driving motor (75), and one end of the belt (76) is sleeved on the shaft on one side of the second knife roller (74).

6. The tensile testing machine for testing composite film bags for food packaging according to claim 1, characterized in that: A hydraulic cylinder (61) is fixedly connected to one side of the fixed plate (63), and one end of the hydraulic cylinder (61) is connected to a clamping block (64).

7. The tensile testing machine for testing composite film bags for food packaging according to claim 1, characterized in that: The clamping block (64), the fixing plate (63) and the hydraulic cylinder (61) are all distributed in a bilaterally symmetrical manner about the bisector of the fixing platform (62).

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