Stretching detection device for packaging bag

Abstract

The utility model discloses a packaging bag stretching detection device which comprises a vertical stretching detection mechanism and a lifting motor installed on one side of the top of the vertical stretching detection mechanism, a transverse stretching detection mechanism is arranged at the bottom of the vertical stretching detection mechanism, and a stretching motor is arranged on one side of the transverse stretching detection mechanism. The vertical stretching detection mechanism comprises a fixing support, a fixing top plate is fixedly installed at the top of the fixing support, the output end of a lifting motor is fixedly connected with a lifting rotating rod, and bevel gear transmission assemblies are symmetrically installed at the two ends of the lifting rotating rod; by arranging the vertical stretching detection mechanism, the height of a lifting plate can be adjusted through a lifting motor, so that vertical stretching detection is achieved, an opening and closing motor is started to drive an opening and closing clamping arm to fix a packaging bag, a vertical telescopic pump is used for driving a vertical pressure detector to ascend and descend, and stretching detection is conducted from the interior of the packaging bag.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag detection, in particular to a stretching detection device for packaging bags. Background Art

[0002] Packaging bags refer to bags used to package various items, which make it convenient to transport and store goods during the production and circulation process. Generally, a certain amount of samples need to be taken for tensile testing after production to determine whether the tensile strength of the packaging bags meets the requirements. However, the existing testing methods are all unidirectional testing, transverse tensile testing or longitudinal tensile testing. In unidirectional testing, interference from other directions cannot be avoided, and it is also difficult to intuitively obtain the results of bidirectional comprehensive stretching.

[0003] Announcement No. CN 115508185 A discloses a packaging bag stretch detection device, including a mounting seat, which is arranged on the ground. The upper surface of the mounting seat is provided with a mounting hole, and also includes a positioning ring, which is arranged in the mounting hole, a lifting frame, which is arranged in the mounting hole, and the upper and lower ends are respectively connected to the bottom of the positioning ring and the bottom of the mounting hole, a pressure detection block, which is arranged in the mounting hole and located in the middle of the positioning ring, a cover ring, which is arranged above the positioning ring, and a plurality of pressing telescopic rods, which are vertical to the horizontal plane, and the upper and lower ends are respectively connected to the upper end of the positioning ring and the lower end of the cover ring, the upper end of the positioning ring is provided with a connecting hole, and the lower end of the cover ring is provided with a connecting hole, and the two ends of the pressing telescopic rod are respectively inserted into the connecting hole of the positioning ring and the connecting hole of the cover ring, and the packaging bag is clamped by the positioning ring and the cover ring, and then the lifting frame rises to a set height with the positioning ring, the packaging bag and the cover ring, and releases the detection ball from the set height, and the tensile performance of the packaging bag is determined by detecting the pressure applied to the detection ball after the release. However, the patent still has the following problems in actual use:

[0004] The packaging bag stretching detection device only judges the stretching performance of the packaging bag by releasing the detection ball, and its detection result is inaccurate. After the detection ball is released, it will fall in the vertical direction, so it can only detect the tension in the vertical direction of the packaging bag, resulting in a relatively single detection result, making the detection result unrepresentative and thus inaccurate.

[0005] A stretch detection device for a packaging bag is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a stretch detection device for packaging bags, so as to solve the problem that the packaging bag stretch detection device proposed in the above background technology only judges the stretch performance of the packaging bag by releasing a detection ball, and the detection result is inaccurate. After the detection ball is released, it will fall in the vertical direction, so that only the tension in the vertical direction of the packaging bag can be detected, resulting in a relatively single detection result, making the detection result unrepresentative, and thus making the detection result inaccurate.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stretch detection device for packaging bags, comprising a vertical stretch detection mechanism, and a lifting motor installed on one side of the top of the vertical stretch detection mechanism;

[0008] A transverse stretching detection mechanism is provided at the bottom of the vertical stretching detection mechanism, and a stretching motor is provided on one side of the transverse stretching detection mechanism;

[0009] Also includes:

[0010] The vertical stretch detection mechanism comprises a fixed bracket, a fixed top plate is fixedly installed on the top of the fixed bracket, and a lifting rotating rod is fixedly connected to the output end of the lifting motor;

[0011] Wherein, bevel gear transmission assemblies are symmetrically installed at both ends of the lifting and rotating rod, and the bottoms of the two bevel gear transmission assemblies are fixedly connected with lifting threaded rods;

[0012] Among them, the middle part of the lifting threaded rod is threadedly connected with a lifting threaded sleeve, and a lifting plate is fixedly connected between the two lifting threaded sleeves.

[0013] Preferably, a lifting sliding sleeve is symmetrically installed on one side of the lifting plate, and the lifting sliding sleeve is slidably connected to a lifting sliding rod inside. A translation motor is fixedly installed on one side of the lifting plate, and the output end of the translation motor is fixedly connected to a first bidirectional threaded rod, and both ends of the first bidirectional threaded rod are symmetrically threadedly connected to translation threaded sleeves, and the bottom of the translation threaded sleeve is fixed on a translation limit plate.

[0014] Preferably, a first telescopic pump is fixedly installed at the bottom center of the translation limit plate, two sides of the bottom of the first telescopic pump are symmetrically rotatably connected to first clamping brackets, and the ends of the first clamping brackets are rotatably connected to first clamping arms.

[0015] Preferably, a fixed plate is fixedly installed at the bottom center position of the lifting plate, a plurality of connecting columns are fixedly connected to the outer side of the bottom of the fixed plate, an opening and closing rotating sleeve is fixedly installed at the bottom of the connecting column, an opening and closing motor is fixedly installed on the top side of the opening and closing rotating sleeve, and an opening and closing driving gear is fixedly connected to the output end of the opening and closing motor.

[0016] Preferably, one side of the opening and closing driving gear is meshingly connected with a driven gear plate, a plurality of spiral grooves are provided inside the driven gear plate, an opening and closing slider is slidably connected inside the spiral groove, an opening and closing sliding rod is fixedly installed at the bottom of the opening and closing slider, an opening and closing clamping arm is fixedly connected to the end of the opening and closing sliding rod, a vertical telescopic pump is fixedly installed at the bottom of the opening and closing rotating sleeve, and a vertical pressure detector is fixedly connected to the bottom of the vertical telescopic pump.

[0017] Preferably, the lateral stretching detection mechanism includes a detection platform, a motor cover is fixedly installed on one side of the detection platform, the stretching motor is fixedly installed on the inner side of the motor cover, the output end of the stretching motor is fixedly connected to a sprocket transmission assembly, one side of the sprocket transmission assembly is symmetrically connected to a second bidirectional threaded rod, and both ends of the two second bidirectional threaded rods are symmetrically threaded with stretching threaded sleeves.

[0018] Preferably, a connecting block is fixedly installed on one side of the stretching threaded sleeve, a fixed toothed disc is fixedly installed on one side of the connecting block, a rotating shaft is rotatably connected inside the fixed toothed disc, a second telescopic pump is fixedly installed on one side of the middle of the rotating shaft, the ends of the second telescopic pump are symmetrically rotatably connected to second clamping brackets on both sides, the ends of the second clamping bracket are rotatably connected to second clamping arms, a plurality of unlocking sliding rods are fixedly installed on the outer side of the end of the rotating shaft, an unlocking spring sleeve is provided on the outer side of the unlocking sliding rod, and an unlocking button is fixedly installed on one side of the unlocking spring sleeve.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the stretch detection device for packaging bags can not only adjust the height of the lifting plate by using the lifting motor to realize vertical stretch detection by setting the vertical stretch detection mechanism, but also fix the packaging bag by starting the opening and closing motor to drive the opening and closing clamping arm, and use the vertical telescopic pump to drive the vertical pressure detector to move up and down, so as to perform stretch detection from the inside of the packaging bag, and can not only use the second telescopic pump to drive the second clamping arm to clamp and fix the bottom sides of the packaging bag by setting the transverse stretch detection mechanism, but also use the stretch motor to perform transverse stretch detection on the packaging bag, and the specific contents are as follows:

[0020] 1. By setting up the vertical stretching detection mechanism, not only can the lifting motor be used to drive the lifting rotating rod and the bevel gear transmission assembly to rotate, so that the bevel gear transmission assembly drives the lifting threaded rod to rotate, and the lifting threaded sleeve drives the lifting plate to move up and down, and at the same time, the first telescopic pump is used to drive the first clamping bracket and the first clamping arm to rotate, so as to clamp and fix the top two sides of the packaging bag, and the height of the lifting plate is adjusted to realize vertical stretching detection, and the opening and closing motor is started to drive the opening and closing active gear to rotate, and the meshing action between the opening and closing active gear and the driven gear plate is used to make the opening and closing slider drive the opening and closing sliding rod to expand or close the opening and closing clamping arm under the action of the spiral slide groove, so that the packaging bag can be set on the outside of the opening and closing rotating sleeve, and the opening and closing clamping arm is used to fix the packaging bag, and the vertical telescopic pump is used to drive the vertical pressure detector to move up and down, and the stretching detection is performed from the inside of the packaging bag, so as to improve the accuracy of the detection data;

[0021] 2. By setting up the transverse stretching detection mechanism, not only can the second telescopic pump be used to drive the second clamping bracket and the second clamping arm to rotate, and the second clamping arm can be used to clamp and fix the bottom two sides of the packaging bag, but the stretching motor can also be used to drive the sprocket transmission assembly and the second bidirectional threaded rod to rotate, so that the stretching threaded sleeve drives the connecting block to move relatively, thereby performing transverse stretching detection of the packaging bag, and by pressing the unlocking button, the unlocking spring sleeve is driven to slide on the outside of the unlocking sliding rod, so that the unlocking spring sleeve is separated from the fixed toothed disc, thereby realizing the rotation of the rotating shaft, and by adjusting the direction of the second clamping arm, vertical stretching detection and transverse stretching detection are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the cross section of the lifting plate in the vertical stretching detection mechanism of the utility model;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the first clamping bracket and the first clamping arm in the utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the opening and closing clamping arm and the vertical pressure detector in the utility model;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the transverse stretching detection mechanism in the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the fixed toothed disc and the second clamping arm in the utility model.

[0028] In the figure: 1, vertical stretch detection mechanism; 101, fixed bracket; 102, fixed top plate; 103, lifting motor; 104, lifting rotating rod; 105, bevel gear transmission assembly; 106, lifting threaded rod; 107, lifting threaded sleeve; 108, lifting plate; 109, lifting sliding sleeve; 110, lifting sliding rod; 111, translation motor; 112, first two-way threaded rod; 113, translation threaded sleeve; 114, translation limit plate; 115, first telescopic pump; 116, first clamping bracket; 117, first clamping arm; 118, fixed plate; 119, connecting column; 120, opening and closing rotating sleeve; 121, opening and closing motor; 122, opening and closing active Gear; 123, driven gear disc; 124, spiral slide; 125, opening and closing slider; 126, opening and closing sliding rod; 127, opening and closing clamping arm; 128, vertical telescopic pump; 129, vertical pressure detector; 2, transverse stretching detection mechanism; 201, detection table; 202, motor cover; 203, stretching motor; 204, sprocket transmission assembly; 205, second bidirectional threaded rod; 206, stretching threaded sleeve; 207, connecting block; 208, fixed gear disc; 209, rotating shaft; 210, second telescopic pump; 211, second clamping bracket; 212, second clamping arm; 213, unlocking sliding rod; 214, unlocking spring sleeve; 215, unlocking button. 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 implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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 1-6The utility model provides a technical solution: a stretching detection device for packaging bags, comprising a vertical stretching detection mechanism 1, and a lifting motor 103 installed on one side of the top of the vertical stretching detection mechanism 1, a transverse stretching detection mechanism 2 is arranged at the bottom of the vertical stretching detection mechanism 1, and a stretching motor 203 is arranged on one side of the transverse stretching detection mechanism 2, the vertical stretching detection mechanism 1 comprises a fixed bracket 101, a fixed top plate 102 is fixedly installed on the top of the fixed bracket 101, and a lifting rotating rod 104 is fixedly connected to the output end of the lifting motor 103, wherein bevel gear transmission assemblies 105 are symmetrically installed at both ends of the lifting rotating rod 104, and lifting threaded rods 106 are fixedly connected to the bottoms of the two bevel gear transmission assemblies 105, wherein the middle part of the lifting threaded rod 106 is threadedly connected with a lifting threaded sleeve 107, and a lifting plate 108 is fixedly connected between the two lifting threaded sleeves 107, and a lifting plate 108 is symmetrically installed on one side of the lifting plate 108. A lifting sliding sleeve 109 is symmetrically installed on one side of the lifting plate 108, and a lifting sliding rod 110 is slidably connected to the inside of the lifting sliding sleeve 109, and a lifting sliding rod 110 is slidably connected to the lifting plate 108. A translation motor 111 is fixedly installed on the side, and the output end of the translation motor 111 is fixedly connected to a first bidirectional threaded rod 112, and the two ends of the first bidirectional threaded rod 112 are symmetrically threadedly connected to translation thread sleeves 113, and the bottom of the translation thread sleeve 113 is fixed to a translation limit plate 114, and a first telescopic pump 115 is fixedly installed at the bottom center of the translation limit plate 114, and the bottom two sides of the first telescopic pump 115 are symmetrically rotatably connected to a first clamping bracket 116, and the end of the first clamping bracket 116 is rotatably connected to a first clamping arm 117. By setting up the vertical stretching detection mechanism 1, not only can the lifting motor 103 be used to drive the lifting rotating rod 104 and the bevel gear transmission assembly 105 to rotate, so that the bevel gear transmission assembly 105 drives the lifting threaded rod 106 to rotate, and the lifting threaded sleeve 107 drives the lifting plate 108 to move up and down, but also the first telescopic pump 115 is used to drive the first clamping bracket 116 and the first clamping arm 117 to rotate, so as to clamp and fix the top two sides of the packaging bag, and the vertical stretching detection is realized by adjusting the height of the lifting plate 108.

[0031] A fixed plate 118 is fixedly installed at the bottom center position of the lifting plate 108, and a plurality of connecting columns 119 are fixedly connected to the bottom outer side of the fixed plate 118. An opening and closing rotating sleeve 120 is fixedly installed at the bottom of the connecting column 119, and an opening and closing motor 121 is fixedly installed on the top side of the opening and closing rotating sleeve 120. An opening and closing driving gear 122 is fixedly connected to the output end of the opening and closing motor 121, and a driven gear plate 123 is meshedly connected to one side of the opening and closing driving gear 122. A plurality of spiral grooves 124 are provided inside the driven gear plate 123, and an opening and closing slider 125 is slidably connected inside the spiral groove 124. An opening and closing sliding rod 126 is fixedly installed at the bottom of the opening and closing slider 125, and an opening and closing clamping arm 127 is fixedly connected to the end of the opening and closing sliding rod 126 A vertical telescopic pump 128 is fixedly installed at the bottom of the opening and closing rotating sleeve 120, and a vertical pressure detector 129 is fixedly connected to the bottom of the vertical telescopic pump 128. By starting the opening and closing motor 121, the opening and closing driving gear 122 is driven to rotate, and the meshing action between the opening and closing driving gear 122 and the driven gear plate 123 is utilized to make the opening and closing slider 125 under the action of the spiral slide groove 124, so that the opening and closing sliding rod 126 drives the opening and closing clamping arm 127 to expand or close, so that the packaging bag can be put on the outside of the opening and closing rotating sleeve 120, and the opening and closing clamping arm 127 is used to fix the packaging bag, and the vertical telescopic pump 128 is used to drive the vertical pressure detector 129 to move up and down, and the tensile test is performed from the inside of the packaging bag to improve the accuracy of the test data.

[0032] The transverse stretching detection mechanism 2 includes a detection platform 201, a motor cover 202 is fixedly installed on one side of the detection platform 201, a stretching motor 203 is fixedly installed on one side of the motor cover 202, an output end of the stretching motor 203 is fixedly connected to a sprocket transmission assembly 204, a second bidirectional threaded rod 205 is symmetrically connected to one side of the sprocket transmission assembly 204, two ends of the two second bidirectional threaded rods 205 are symmetrically threadedly connected to stretching threaded sleeves 206, a connecting block 207 is fixedly installed on one side of the stretching threaded sleeve 206, a fixed toothed disc 208 is fixedly installed on one side of the connecting block 207, a rotating shaft 209 is rotatably connected to the interior of the fixed toothed disc 208, a second telescopic pump 210 is fixedly installed on one side of the middle part of the rotating shaft 209, and second clamping brackets 211 are symmetrically rotatably connected to the ends of the second telescopic pump 210, and second clamping arms 212 are rotatably connected to the ends of the second clamping brackets 211, and a second clamping arm 212 is fixedly installed on the outer side of the end of the rotating shaft 209. A plurality of unlocking sliding rods 213 are provided with an unlocking spring sleeve 214 on the outer side of the unlocking sliding rod 213, and an unlocking button 215 is fixedly installed on one side of the unlocking spring sleeve 214. By setting the transverse stretching detection mechanism 2, not only can the second telescopic pump 210 be used to drive the second clamping bracket 211 and the second clamping arm 212 to rotate, and the second clamping arm 212 can be used to clamp and fix the bottom sides of the packaging bag, but also the stretching motor 203 is used to drive the sprocket transmission assembly 204 and the second bidirectional threaded rod 205 to rotate, so that the stretching threaded sleeve 206 drives the connecting block 207 to move relatively, so as to perform transverse stretching detection of the packaging bag, and the unlocking spring sleeve 214 is driven to slide on the outer side of the unlocking sliding rod 213 by pressing the unlocking button 215, so that the unlocking spring sleeve 214 is separated from the fixed toothed disc 208, so that the rotation of the rotating shaft 209 can be realized, and the direction of the second clamping arm 212 is adjusted to facilitate vertical stretching detection and transverse stretching detection.

[0033] Working principle: Before using this stretch testing device for packaging bags, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 6As shown, first, the first telescopic pump 115 is started to drive the first clamping bracket 116 and the first clamping arm 117 to rotate, and the top two sides of the packaging bag are clamped and fixed. The lifting motor 103 is started to drive the lifting rotating rod 104 and the bevel gear transmission assembly 105 to rotate, so that the bevel gear transmission assembly 105 drives the lifting threaded rod 106 to rotate, and the lifting threaded sleeve 107 drives the lifting plate 108 to move up and down, and the packaging bag is moved to the top of the second clamping arm 212. The second telescopic pump 210 is started to drive the second clamping bracket 211 and the second clamping arm 212 to rotate, and the bottom two sides of the packaging bag are clamped and fixed by the second clamping arm 212. The height of the lifting plate 108 is adjusted to achieve vertical stretching detection. Secondly, when it is necessary to perform a transverse stretching test on the packaging bag, the unlocking button 215 is pressed to drive the unlocking spring sleeve 214 to slide on the outside of the unlocking sliding rod 213, so that the unlocking spring sleeve 214 is separated from the fixed toothed disc 208, so that the rotation of the rotating shaft 209 can be achieved. The second clamping arm 212 rotates to the horizontal direction, and the second clamping arm 212 is used to clamp and fix the two sides of the middle part of the packaging bag, and the stretching motor 203 is started to drive the sprocket transmission assembly 204 and the second bidirectional threaded rod 205 to rotate, so that the stretching threaded sleeve 206 drives the connecting block 207 to move relatively, thereby performing a transverse stretching test on the packaging bag. Finally, the packaging bag is unfolded and the packaging bag is placed on the outside of the opening and closing rotating sleeve 120, and the opening and closing motor 121 is started to drive the opening and closing driving gear 122 to rotate. By utilizing the meshing action between the opening and closing driving gear 122 and the driven gear plate 123, the opening and closing slider 125 is enabled to drive the opening and closing sliding rod 126 to drive the opening and closing clamping arm 127 to unfold or close under the action of the spiral slide groove 124, so that the packaging bag can be placed on the outside of the opening and closing rotating sleeve 120, and the opening and closing clamping arm 127 is used to fix the packaging bag, and the vertical telescopic pump 128 is used to drive the vertical pressure detector 129 to move up and down, and the stretching test is performed from the inside of the packaging bag to improve the accuracy of the test data.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A stretch detection device for a packaging bag, comprising a vertical stretch detection mechanism (1), and a lifting motor (103) installed on one side of the top of the vertical stretch detection mechanism (1); A transverse stretching detection mechanism (2) is arranged at the bottom of the vertical stretching detection mechanism (1), and a stretching motor (203) is arranged on one side of the transverse stretching detection mechanism (2); It is characterized in that Also includes: The vertical stretch detection mechanism (1) comprises a fixed bracket (101), a fixed top plate (102) is fixedly mounted on the top of the fixed bracket (101), and a lifting rotating rod (104) is fixedly connected to the output end of the lifting motor (103); Wherein, bevel gear transmission assemblies (105) are symmetrically installed at both ends of the lifting and rotating rod (104), and the bottoms of the two bevel gear transmission assemblies (105) are fixedly connected with lifting threaded rods (106); The middle part of the lifting threaded rod (106) is threadedly connected to a lifting threaded sleeve (107), and a lifting plate (108) is fixedly connected between the two lifting threaded sleeves (107).

2. A stretch detection device for packaging bags according to claim 1, characterized in that: A lifting sliding sleeve (109) is symmetrically mounted on one side of the lifting plate (108), a lifting sliding rod (110) is slidably connected to the interior of the lifting sliding sleeve (109), a translation motor (111) is fixedly mounted on one side of the lifting plate (108), an output end of the translation motor (111) is fixedly connected to a first bidirectional threaded rod (112), two ends of the first bidirectional threaded rod (112) are symmetrically threadedly connected to translation thread sleeves (113), and the bottom of the translation thread sleeve (113) is fixed to a translation limiting plate (114).

3. A stretch detection device for packaging bags according to claim 2, characterized in that: A first telescopic pump (115) is fixedly installed at the center position of the bottom of the translation limit plate (114); two sides of the bottom of the first telescopic pump (115) are symmetrically rotatably connected to first clamping brackets (116); and the ends of the first clamping brackets (116) are rotatably connected to first clamping arms (117).

4. A stretch detection device for packaging bags according to claim 3, characterized in that: A fixing plate (118) is fixedly mounted at the center of the bottom of the lifting plate (108); a plurality of connecting columns (119) are fixedly connected to the outer side of the bottom of the fixing plate (118); an opening and closing rotating sleeve (120) is fixedly mounted at the bottom of the connecting column (119); an opening and closing motor (121) is fixedly mounted on one side of the top of the opening and closing rotating sleeve (120); and an opening and closing driving gear (122) is fixedly connected to the output end of the opening and closing motor (121).

5. A stretch detection device for packaging bags according to claim 4, characterized in that: A driven gear disc (123) is meshedly connected to one side of the opening and closing driving gear (122), a plurality of spiral grooves (124) are provided inside the driven gear disc (123), an opening and closing slider (125) is slidably connected inside the spiral groove (124), an opening and closing sliding rod (126) is fixedly installed at the bottom of the opening and closing slider (125), an opening and closing clamping arm (127) is fixedly connected to the end of the opening and closing sliding rod (126), a vertical telescopic pump (128) is fixedly installed at the bottom of the opening and closing rotating sleeve (120), and a vertical pressure detector (129) is fixedly connected to the bottom of the vertical telescopic pump (128).

6. The stretch detection device for packaging bags according to claim 1, characterized in that: The transverse stretching detection mechanism (2) comprises a detection platform (201), a motor cover (202) is fixedly mounted on one side of the detection platform (201), the stretching motor (203) is fixedly mounted on one side of the motor cover (202), the output end of the stretching motor (203) is fixedly connected to a sprocket transmission assembly (204), one side of the sprocket transmission assembly (204) is symmetrically connected to a second bidirectional threaded rod (205), and both ends of the two second bidirectional threaded rods (205) are symmetrically threadedly connected to a stretching threaded sleeve (206).

7. A stretch detection device for packaging bags according to claim 6, characterized in that: A connecting block (207) is fixedly installed on one side of the stretching threaded sleeve (206), a fixed toothed disc (208) is fixedly installed on one side of the connecting block (207), the fixed toothed disc (208) is rotatably connected to a rotating shaft (209) inside, a second telescopic pump (210) is fixedly installed on one side of the middle of the rotating shaft (209), the ends of the second telescopic pump (210) are symmetrically rotatably connected to a second clamping bracket (211), the end of the second clamping bracket (211) is rotatably connected to a second clamping arm (212), a plurality of unlocking sliding rods (213) are fixedly installed on the outer side of the end of the rotating shaft (209), the outer side of the unlocking sliding rod (213) is provided with an unlocking spring sleeve (214), and an unlocking button (215) is fixedly installed on one side of the unlocking spring sleeve (214).

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