A method for detecting defects in blow-molded luggage production

Abstract

The application discloses a kind of blow molding luggage production defect detection methods, it is related to luggage detection technical field, the blow molding luggage production defect detection method is realized by blow molding luggage production defect detection equipment, the blow molding luggage production defect detection method blow molding luggage production defect detection equipment includes machine case, the machine case front and back are all set with inlet and outlet, two the inside of inlet and outlet are fixedly provided with luggage conveying belt, the drive mechanism is fixedly arranged in the bottom of the machine case inner chamber, the drive mechanism top and right side are commonly provided with transfer mechanism, the detection mechanism is fixedly arranged in the top of the machine case inner chamber, the first protection shielding mechanism is arranged in the top of the detection mechanism.The application can complete the comprehensive detection of single luggage in one detection process, and then does not need to repeat detection process many times, effectively reduces the workload while significantly improves the detection efficiency, is more suitable for the industrialized detection operation of blow molding luggage.

Description

Technical Field

[0001] This invention relates to the field of bag and luggage inspection technology, and in particular to a method for detecting defects in blow-molded bag and luggage production. Background Technology

[0002] The specifications of luggage on the market are generally based on the size regulations of carry-on and checked luggage of airlines. Before the finished luggage is shipped out, the manufacturers need to conduct size inspections on the produced luggage to remove products that do not meet the size standards, thereby ensuring the quality of the products.

[0003] The invention patent with authorization announcement number CN 113182206 B discloses a size inspection platform for bag production, including an inspection table with a trapezoidal cross-section. The upper end of the inspection table has a groove, and a support plate is arranged in the groove. Multiple first springs are fixedly connected to the bottom surface of the support plate, and the lower ends of the multiple first springs are fixedly connected to the bottom wall of the groove. A housing and a backing plate are fixedly connected to the two sides of the groove on the inspection table, respectively. A support rod is fixedly connected to the bottom of the housing and the bottom of the inspection table. An inspection mechanism is arranged inside the housing.

[0004] This inspection platform can automatically inspect suitcases and then classify and transport them after inspection. The entire inspection process is triggered by the characteristics of the suitcases themselves, which is faster, more efficient and accurate than manual inspection. At the same time, the equipment is inexpensive and easy to maintain, thus reducing equipment costs.

[0005] However, after practical application by those skilled in the art, the above-mentioned device still has some shortcomings. The most obvious one is that when it detects bags by clamping, it can only achieve unidirectional detection. Therefore, a single bag needs to be detected at least three times, namely in the horizontal, vertical and front-back directions. The large number of detections seriously affects the detection efficiency and cannot be effectively applied to the industrial detection operation of blow-molded bags.

[0006] Therefore, it is necessary to invent a method for detecting defects in blow-molded bags to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a method for detecting defects in blow-molded bags and cases, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a method for detecting defects in blow-molded luggage production, wherein the method is implemented by a blow-molded luggage production defect detection device, the blow-molded luggage production defect detection device includes a chassis, the chassis having inlet and outlet ports on both the front and back, a luggage conveyor belt being fixedly installed on the inner sides of the two inlet and outlet ports, a drive mechanism being fixedly installed at the bottom of the chassis cavity, a transfer mechanism being installed on the top and right side of the drive mechanism, a detection mechanism being fixedly installed at the top of the chassis cavity, a first protective shielding mechanism being installed at the top of the detection mechanism, and a second protective shielding mechanism being installed at the top of the first protective shielding mechanism;

[0009] The drive mechanism includes a base plate, a reciprocating screw, a drive motor, a negative pressure pipe, an inner sleeve, a first spring, an outer sleeve, a side plate, and a lifting rod;

[0010] The base plate is fixedly installed at the bottom of the inner side of the chassis. The reciprocating screw passes through the base plate and is rotatably connected to the base plate through a bearing. The drive motor is fixedly installed at the bottom of the base plate and is connected to the reciprocating screw for transmission. The negative pressure pipe is connected to the bottom end of the reciprocating screw through a rotary joint. The inner sleeve, the first spring, and the outer sleeve are sequentially sleeved on the outer side of the reciprocating screw from top to bottom. The inner sleeve is slidably installed on the inner side of the outer sleeve. One end of the first spring is fixedly connected to the inner sleeve and the other end is fixedly connected to the inner wall of the outer sleeve. The outer sleeve is threadedly connected to the reciprocating screw. The side plate is fixedly installed on the left side of the outer sleeve. The lifting rod is fixedly installed on the top of the side plate.

[0011] The transfer mechanism includes a lifting tray, a sealing plate, a rack, a mounting plate, gears, an L-shaped arm, a suction cup, and a negative pressure transfer tube;

[0012] The lifting tray is fixedly installed at the bottom right side of the outer sleeve. The sealing plate is fixedly installed at the top of the inner sleeve and seals the top of the reciprocating screw. The rack is fixedly installed at the right end of the sealing plate. The gear and the L-shaped arm are located on the front and back of the mounting plate, respectively. The gear and the L-shaped arm are rotatably connected to the mounting plate through a pin. The suction cup is fixedly installed at the bottom end of the L-shaped arm. The negative pressure transmission tube is fixedly installed through the side of the suction cup. The left end of the negative pressure transmission tube is fixedly installed through the top right side of the inner sleeve.

[0013] Preferably, the testing mechanism includes a first testing platform, a second testing platform, a clearance groove, a first testing device, and a second testing device.

[0014] Preferably, the second testing station is located to the right of the first testing station. Both the first and second testing stations are fixedly connected to the inner wall of the chassis. The clearance groove is opened to the right of the first testing station. Four first testing devices are provided. The four first testing devices are respectively fixedly installed on the top of the first and second testing stations. The second testing device is fixedly installed on the top of the inner cavity of the chassis.

[0015] Preferably, the first protective shielding mechanism includes an annular shield, a receiving groove, and a guide rod.

[0016] Preferably, the annular shield is located on the top of the first and second testing platforms. Four receiving slots are provided. The annular shield is sleeved on the outside of the four first testing devices through the four receiving slots. Two guide rods are provided. The two guide rods are slidably inserted through the top two sides of the annular shield and are fixedly connected to the first and second testing platforms, respectively.

[0017] Preferably, the second protective shielding mechanism includes a shielding sleeve, a T-shaped baffle, a second spring, an L-shaped guide tube, and a connecting rope.

[0018] Preferably, the shielding sleeve is sleeved on the outside of the second detection device and fixedly connected to the inner wall of the chassis. The T-shaped baffle is slidably inserted through the right side of the shielding sleeve. The second spring is sleeved on the outside of the T-shaped baffle. One end of the second spring is fixedly connected to the shielding sleeve and the other end is fixedly connected to the T-shaped baffle. The L-shaped guide tube is fixedly inserted through the left side of the shielding sleeve. The connecting rope is slidably inserted inside the L-shaped guide tube. One end of the connecting rope is fixedly connected to the T-shaped baffle and the other end is fixedly connected to the annular shielding plate.

[0019] Preferably, the method for detecting defects in blow-molded bags specifically includes the following steps:

[0020] S1. The bag conveyor belt transports the bag to be inspected to the position directly below the suction cup. Then, the drive motor is started. After the drive motor starts, it drives the reciprocating screw to rotate continuously. During the rotation of the reciprocating screw, the outer sleeve is continuously raised. During the rise of the outer sleeve, the inner sleeve is continuously raised through the first spring. When the inner sleeve rises, the sealing plate is raised. In addition, the rise of the outer sleeve will also drive the lifting tray to rise synchronously.

[0021] S2. After the sealing plate rises, it releases the seal on the top of the reciprocating screw. The negative pressure transmitted to the reciprocating screw through the negative pressure pipe enters the inner sleeve through the top of the reciprocating screw, and then enters the suction cup through the negative pressure transmission pipe. When the outer sleeve rises to the first threshold, the lifting tray passes through the bag conveyor belt and contacts the bag to be tested above the bag conveyor belt. Subsequently, as the outer sleeve continues to rise, the lifting tray lifts the bag to be tested.

[0022] S3. When the outer sleeve rises to the second threshold, the bag to be tested comes into contact with the suction cup, and the suction cup adsorbs the bag to be tested. Subsequently, as the outer sleeve continues to rise, the sealing plate drives the gear to rotate continuously through the rack and pinion. During the rotation of the gear, the bag is flipped over through the L-shaped arm and the suction cup.

[0023] S4. When the outer sleeve rises to the third threshold, the bag to be tested is placed on the top of the first testing platform by the suction cup. At the same time, the sealing plate contacts the gear. Due to the obstruction of the gear, the sealing plate cannot continue to rise. Subsequently, as the outer sleeve continues to rise, the first spring is compressed, and the outer sleeve continues to drive the lifting rod to rise through the side plate.

[0024] S5. When the outer sleeve rises to the fourth threshold, the lifting rod contacts the bottom of the annular baffle. As the outer sleeve continues to rise, the lifting rod lifts the annular baffle. After the annular baffle is lifted, the connecting rope is loosened. At this time, under the push of the second spring, the T-shaped baffle moves to the right simultaneously.

[0025] S6. When the outer sleeve rises to the fifth threshold, the annular baffle completely removes the obstruction of the first detection device. The four first detection devices detect the bag to be tested from the left and right sides and the front and rear sides respectively. At the same time, the T-shaped baffle also removes the obstruction of the second detection device, so that the second detection device can detect the bag from above.

[0026] S7. When the outer sleeve rises to the sixth threshold, the outer sleeve moves to the top of the reciprocating thread on the outside of the reciprocating screw. As the reciprocating screw continues to rotate, the outer sleeve begins to descend along the reciprocating screw. When the outer sleeve descends to the seventh threshold, the bag that has been inspected is placed back on top of the bag conveyor belt, and the bag conveyor belt outputs the bag that has been inspected.

[0027] The technical effects and advantages of this invention are as follows:

[0028] This invention comprises a driving mechanism, a transfer mechanism, a detection mechanism, a first protective shielding mechanism, and a second protective shielding mechanism. During the driving process of the transfer mechanism, the transfer mechanism first releases the obstruction on the driving mechanism, allowing the negative pressure inside the driving mechanism to be transmitted to the transfer mechanism, facilitating the subsequent suction of the bag. Subsequently, as the driving mechanism continues to drive, the transfer mechanism lifts and grasps the bag, placing it on top of the detection mechanism. At this point, the driving mechanism triggers the first protective shielding mechanism, which in turn triggers the second protective shielding mechanism, enabling the detection mechanism to complete a comprehensive inspection of the bag. Compared to similar devices in the prior art, this invention can complete a comprehensive inspection of a single bag in a single inspection process, eliminating the need for repeated inspections. This effectively reduces workload and significantly improves inspection efficiency, making it more suitable for industrial inspection operations of blow-molded bags. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0030] Figure 2 This is a front view cross-sectional structural diagram of the drive mechanism and transfer mechanism of the present invention.

[0031] Figure 3 This is a front view cross-sectional structural diagram of the detection mechanism, the first protective shielding mechanism, and the second protective shielding mechanism of the present invention.

[0032] Figure 4 This is a partial frontal cross-sectional view of the detection mechanism and the first protective shielding mechanism of the present invention.

[0033] In the diagram: 1. Chassis; 2. Inlet / outlet; 3. Bag conveyor belt; 4. Drive mechanism; 41. Base plate; 42. Reciprocating screw; 43. Drive motor; 44. Negative pressure pipe; 45. Inner sleeve; 46. First spring; 47. Outer sleeve; 48. Side plate; 49. Lifting rod; 5. Transfer mechanism; 51. Lifting tray; 52. Sealing plate; 53. Rack; 54. Mounting plate; 55. Gear; 56. L-shaped arm; 57. Suction cup 58. Negative pressure transmission pipe; 6. Detection mechanism; 61. First detection table; 62. Second detection table; 63. Clearance groove; 64. First detection equipment; 65. Second detection equipment; 7. First protective shielding mechanism; 71. Annular shielding plate; 72. Receiving groove; 73. Guide rod; 8. Second protective shielding mechanism; 81. Shielding sleeve; 82. T-shaped baffle; 83. Second spring; 84. L-shaped guide tube; 85. Connecting rope. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] This invention provides, for example Figure 1-4 The invention illustrates a method for detecting defects in blow-molded luggage production. This method is implemented using a blow-molded luggage production defect detection device. The device includes a housing 1, with inlet and outlet ports 2 on both the front and back. A luggage conveyor belt 3 is fixedly installed inside both inlet and outlet ports 2. A drive mechanism 4 is fixedly installed at the bottom of the housing 1's inner cavity. A transfer mechanism 5 is fixedly installed on the top and right side of the drive mechanism 4. A detection mechanism 6 is fixedly installed at the top of the housing 1's inner cavity. A first protective shielding mechanism 7 is installed on the top of the detection mechanism 6, and a second protective shielding mechanism 8 is installed on the top of the first protective shielding mechanism 7.

[0037] like Figure 2 As shown, the drive mechanism 4 includes a base plate 41, a reciprocating screw 42, a drive motor 43, a negative pressure pipe 44, an inner sleeve 45, a first spring 46, an outer sleeve 47, a side plate 48, and a lifting rod 49. The base plate 41 is fixedly installed at the bottom inner side of the housing 1. The reciprocating screw 42 passes through the base plate 41 and is rotatably connected to the base plate 41 via a bearing. The drive motor 43 is fixedly installed at the bottom of the base plate 41 and is drively connected to the reciprocating screw 42. The negative pressure pipe 44 is connected via a rotary joint. At the bottom end of the reciprocating screw 42, the inner sleeve 45, the first spring 46, and the outer sleeve 47 are sequentially sleeved on the outside of the reciprocating screw 42 from top to bottom. The inner sleeve 45 is slidably disposed inside the outer sleeve 47. One end of the first spring 46 is fixedly connected to the inner sleeve 45 and the other end is fixedly connected to the inner wall of the outer sleeve 47. The outer sleeve 47 is threadedly connected to the reciprocating screw 42. The side plate 48 is fixedly disposed on the left side of the outer sleeve 47, and the lifting rod 49 is fixedly disposed on the top of the side plate 48.

[0038] By setting the above structure, the reciprocating screw 42 is continuously rotated after the drive motor 43 starts. During the rotation of the reciprocating screw 42, the outer sleeve 47 is continuously raised. During the raising of the outer sleeve 47, the inner sleeve 45 is continuously raised through the first spring 46.

[0039] like Figure 2As shown, the transfer mechanism 5 includes a lifting tray 51, a sealing plate 52, a rack 53, a mounting plate 54, a gear 55, an L-shaped arm 56, a suction cup 57, and a negative pressure transmission tube 58. The lifting tray 51 is fixedly installed at the bottom right side of the outer sleeve 47. The sealing plate 52 is fixedly installed at the top of the inner sleeve 45 and seals the top of the reciprocating screw 42. The rack 53 is fixedly installed at the right end of the sealing plate 52. The gear 55 and the L-shaped arm 56 are located on the front and back of the mounting plate 54, respectively. The gear 55 and the L-shaped arm 56 are rotatably connected to the mounting plate 54 by a pin. The suction cup 57 is fixedly installed at the bottom end of the L-shaped arm 56. The negative pressure transmission tube 58 is fixedly installed through the side of the suction cup 57, and the left end of the negative pressure transmission tube 58 is fixedly installed through the top right side of the inner sleeve 45.

[0040] By setting up the aforementioned drive mechanism 4 and transfer mechanism 5, the lifting tray 51 and the sealing plate 52 are driven to rise synchronously when the outer sleeve 47 rises. After the sealing plate 52 rises, it releases the seal on the top of the reciprocating screw 42. The negative pressure transmitted by the negative pressure pipe 44 to the inside of the reciprocating screw 42 enters the inside of the inner sleeve 45 through the top of the reciprocating screw 42, and then enters the inside of the suction cup 57 through the negative pressure transmission pipe 58, providing the preconditions for the subsequent adsorption of the bag. As the outer sleeve 47 continues to rise, the lifting tray 51 passes through the bag conveyor belt 3 and contacts the bag to be tested above the bag conveyor belt 3. Subsequently, as the outer sleeve 47 continues to rise, the lifting tray 51 lifts the bag to be tested.

[0041] When the bag to be tested comes into contact with the suction cup 57 after being lifted by the lifting tray 51, the suction cup 57 adsorbs the bag. Subsequently, as the outer sleeve 47 continues to rise, the sealing plate 52 drives the gear 55 to rotate continuously through the rack 53. During the rotation of the gear 55, the bag is flipped over through the L-shaped arm 56 and the suction cup 57. The bag to be tested is placed on the top of the first testing platform 61 by the suction cup 57. At the same time, the sealing plate 52 comes into contact with the gear 55. Due to the obstruction of the gear 55, the sealing plate 52 cannot rise further. Subsequently, as the outer sleeve 47 continues to rise, the first spring 46 is compressed. At the same time, the outer sleeve 47 continues to drive the lifting rod 49 to rise through the side plate 48.

[0042] like Figure 3 and Figure 4As shown, the testing mechanism 6 includes a first testing platform 61, a second testing platform 62, a clearance groove 63, a first testing device 64, and a second testing device 65. The second testing platform 62 is located to the right of the first testing platform 61. Both the first testing platform 61 and the second testing platform 62 are fixedly connected to the inner wall of the chassis 1. The clearance groove 63 is opened to the right of the first testing platform 61. Four first testing devices 64 are provided, and the four first testing devices 64 are respectively fixedly installed on the top of the first testing platform 61 and the second testing platform 62. The second testing device 65 is fixedly installed on the top of the inner cavity of the chassis 1.

[0043] By setting the above structure, after the bag to be tested is placed on the top of the first testing platform 61, the four first testing devices 64 can test the bag to be tested from the left and right sides and the front and back sides respectively. At the same time, the setting of the clearance groove 63 can prevent the first testing platform 61 from blocking the L-shaped arm 56 during the rotation of the L-shaped arm 56.

[0044] It should also be noted that the first detection device 64 is an infrared rangefinder. Those skilled in the art can purchase the corresponding model according to actual needs. Therefore, this application does not limit the specific model of the first detection device 64. At the same time, those skilled in the art can select other components with detection functions according to actual conditions.

[0045] like Figure 3 As shown, the first protective shielding mechanism 7 includes an annular shielding plate 71, receiving grooves 72, and guide rods 73. The annular shielding plate 71 is located on the top of the first detection platform 61 and the second detection platform 62. Four receiving grooves 72 are provided. The annular shielding plate 71 is sleeved on the outside of the four first detection devices 64 through the four receiving grooves 72. Two guide rods 73 are provided. The two guide rods 73 are slidably inserted through both sides of the top of the annular shielding plate 71. The two guide rods 73 are fixedly connected to the first detection platform 61 and the second detection platform 62, respectively.

[0046] By setting the above structure, the annular baffle 71 can accommodate the four first detection devices 64 through the receiving slot 72, thereby protecting the first detection devices 64. At the same time, it can prevent the first detection devices 64 from performing invalid detections on the boxes to be tested while they are placed on the top of the first detection table 61, thus avoiding an excessive amount of invalid detection data.

[0047] like Figure 3As shown, the second protective shielding mechanism 8 includes a shielding sleeve 81, a T-shaped baffle 82, a second spring 83, an L-shaped guide tube 84, and a connecting rope 85. The shielding sleeve 81 is sleeved on the outside of the second detection device 65 and fixedly connected to the inner wall of the housing 1. The T-shaped baffle 82 is slidably inserted through the shielding sleeve 81 on the right side. The second spring 83 is sleeved on the outside of the T-shaped baffle 82, with one end fixedly connected to the shielding sleeve 81 and the other end fixedly connected to the T-shaped baffle 82. The L-shaped guide tube 84 is fixedly inserted through the shielding sleeve 81 on the left side. The connecting rope 85 is slidably inserted inside the L-shaped guide tube 84, with one end fixedly connected to the T-shaped baffle 82 and the other end fixedly connected to the annular shielding plate 71.

[0048] By setting up the above structure, when the connecting rope 85 is no longer taut, the connecting rope 85 relaxes the tension on the T-shaped baffle 82. At this time, under the push of the second spring 83, the T-shaped baffle 82 moves to the right simultaneously, thereby gradually releasing the obstruction to the second detection device 65, so that the second detection device 65 can detect the bag to be tested from above. Subsequently, when the connecting rope 85 is pulled again, the connecting rope 85 drives the T-shaped baffle 82 to reset, thereby obstructing the second detection device 65 again.

[0049] Example 2

[0050] The method for detecting defects in blow-molded luggage production specifically includes the following steps:

[0051] S1. The bag conveyor belt 3 transports the bag to be inspected to a position directly below the suction cup 57. Then, the drive motor 43 is started. After the drive motor 43 starts, it drives the reciprocating screw 42 to rotate continuously. During the rotation of the reciprocating screw 42, the outer sleeve 47 is continuously raised. During the rise of the outer sleeve 47, the inner sleeve 45 is continuously raised through the first spring 46. When the inner sleeve 45 rises, it drives the sealing plate 52 to rise. In addition, the rise of the outer sleeve 47 will also drive the lifting tray 51 to rise synchronously.

[0052] S2. After the sealing plate 52 rises, it releases the seal on the top of the reciprocating screw 42. The negative pressure transmitted by the negative pressure pipe 44 to the inside of the reciprocating screw 42 enters the inside of the inner sleeve 45 through the top of the reciprocating screw 42, and then enters the inside of the suction cup 57 through the negative pressure transmission pipe 58. When the outer sleeve 47 rises to the first threshold, the lifting tray 51 passes through the bag conveyor belt 3 and contacts the bag to be tested above the bag conveyor belt 3. Subsequently, as the outer sleeve 47 continues to rise, the lifting tray 51 lifts the bag to be tested.

[0053] S3. When the outer sleeve 47 rises to the second threshold, the bag to be tested comes into contact with the suction cup 57, and the suction cup 57 adsorbs the bag to be tested. Subsequently, as the outer sleeve 47 continues to rise, the sealing plate 52 drives the gear 55 to rotate continuously through the rack 53. During the rotation of the gear 55, the bag is flipped through the L-shaped arm 56 and the suction cup 57.

[0054] S4. When the outer sleeve 47 rises to the third threshold, the bag to be tested is placed on the top of the first testing platform 61 by the suction cup 57. At the same time, the sealing plate 52 contacts the gear 55. Due to the obstruction of the gear 55, the sealing plate 52 cannot continue to rise. Subsequently, as the outer sleeve 47 continues to rise, the first spring 46 is compressed. At the same time, the outer sleeve 47 continues to drive the lifting rod 49 to rise through the side plate 48.

[0055] S5. When the outer sleeve 47 rises to the fourth threshold, the lifting rod 49 contacts the bottom of the annular baffle 71. As the outer sleeve 47 continues to rise, the lifting rod 49 lifts the annular baffle 71. After the annular baffle 71 is lifted, the connecting rope 85 is relaxed. At this time, under the push of the second spring 83, the T-shaped baffle 82 moves to the right simultaneously.

[0056] S6. When the outer sleeve 47 rises to the fifth threshold, the annular baffle 71 completely removes the obstruction of the first detection device 64. The four first detection devices 64 detect the bag to be tested from the left and right sides and the front and rear sides respectively. At the same time, the T-shaped baffle 82 also removes the obstruction of the second detection device 65, so that the second detection device 65 can detect the bag from above.

[0057] S7. When the outer sleeve 47 rises to the sixth threshold, the outer sleeve 47 moves to the top of the reciprocating thread on the outside of the reciprocating screw 42. As the reciprocating screw 42 continues to rotate, the outer sleeve 47 begins to descend along the reciprocating screw 42. When the outer sleeve 47 descends to the seventh threshold, the bag that has been inspected is placed back on top of the bag conveyor belt 3, and the bag conveyor belt 3 outputs the bag that has been inspected.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for detecting defects in the production of blow-molded luggage, characterized in that: The blow-molded bag production defect detection method is implemented by blow-molded bag production defect detection equipment, which includes a machine box (1). The machine box (1) has inlet and outlet ports (2) on both the front and back. A bag conveyor belt (3) is fixedly installed on the inner side of the two inlet and outlet ports (2). A drive mechanism (4) is fixedly installed at the bottom of the inner cavity of the machine box (1). A transfer mechanism (5) is fixedly installed on the top and right side of the drive mechanism (4). A detection mechanism (6) is fixedly installed on the top of the inner cavity of the machine box (1). A first protective shielding mechanism (7) is installed on the top of the detection mechanism (6). A second protective shielding mechanism (8) is installed on the top of the first protective shielding mechanism (7). The drive mechanism (4) includes a base plate (41), a reciprocating screw (42), a drive motor (43), a negative pressure pipe (44), an inner sleeve (45), a first spring (46), an outer sleeve (47), a side plate (48), and a lifting rod (49). The base plate (41) is fixedly installed at the bottom inside the chassis (1). The reciprocating screw (42) passes through the base plate (41) and is rotatably connected to the base plate (41) through a bearing. The drive motor (43) is fixedly installed at the bottom of the base plate (41) and is connected to the reciprocating screw (42) for transmission. The negative pressure pipe (44) is connected to the bottom end of the reciprocating screw (42) through a rotary joint. The inner sleeve (45), the first spring (46), and the outer sleeve (47) are arranged from top to bottom. The inner sleeve (45) is slidably disposed on the inner side of the outer sleeve (47), one end of the first spring (46) is fixedly connected to the inner sleeve (45) and the other end is fixedly connected to the inner wall of the outer sleeve (47), the outer sleeve (47) is threadedly connected to the reciprocating screw (42), the side plate (48) is fixedly disposed on the left side of the outer sleeve (47), and the lifting rod (49) is fixedly disposed on the top of the side plate (48); The transfer mechanism (5) includes a lifting tray (51), a sealing plate (52), a rack (53), a mounting plate (54), a gear (55), an L-shaped arm (56), a suction cup (57), and a negative pressure transmission tube (58). The lifting tray (51) is fixedly installed at the bottom right side of the outer sleeve (47). The sealing plate (52) is fixedly installed at the top of the inner sleeve (45) and seals the top of the reciprocating screw (42). The rack (53) is fixedly installed at the right end of the sealing plate (52). The gear (55) and the L-shaped arm (56) are located on the front and back of the mounting plate (54) respectively. The gear (55) and the L-shaped arm (56) are rotatably connected to the mounting plate (54) through a pin. The suction cup (57) is fixedly installed at the bottom end of the L-shaped arm (56). The negative pressure transmission tube (58) is fixedly installed through the side of the suction cup (57). The left end of the negative pressure transmission tube (58) is fixedly installed through the top right side of the inner sleeve (45).

2. The method for detecting defects in the production of blow-molded luggage according to claim 1, characterized in that: The testing mechanism (6) includes a first testing table (61), a second testing table (62), a clearance groove (63), a first testing device (64), and a second testing device (65).

3. The method for detecting defects in the production of blow-molded luggage according to claim 2, characterized in that: The second testing station (62) is located to the right of the first testing station (61). The first testing station (61) and the second testing station (62) are both fixedly connected to the inner wall of the chassis (1). The clearance groove (63) is opened to the right of the first testing station (61). There are four first testing devices (64). The four first testing devices (64) are fixedly installed on the top of the first testing station (61) and the second testing station (62) respectively. The second testing device (65) is fixedly installed on the top of the inner cavity of the chassis (1).

4. The method for detecting defects in blow molding of a bag according to claim 3, characterized in that: The first protective shielding mechanism (7) includes an annular shield (71), a receiving groove (72), and a guide rod (73).

5. The method for detecting defects in the production of blow-molded luggage according to claim 4, characterized in that: The annular shield (71) is located on the top of the first testing platform (61) and the second testing platform (62). There are four receiving slots (72). The annular shield (71) is sleeved on the outside of the four first testing devices (64) through the four receiving slots (72). There are two guide rods (73). The two guide rods (73) are slidably installed on both sides of the top of the annular shield (71). The two guide rods (73) are fixedly connected to the first testing platform (61) and the second testing platform (62) respectively.

6. The method for detecting defects in the production of blow-molded luggage according to claim 5, characterized in that: The second protective shielding mechanism (8) includes a shielding sleeve (81), a T-shaped baffle (82), a second spring (83), an L-shaped guide tube (84), and a connecting rope (85).

7. The method for detecting defects in blow molding of a bag according to claim 6, characterized in that: The shielding sleeve (81) is sleeved on the outside of the second detection device (65) and fixedly connected to the inner wall of the chassis (1). The T-shaped baffle (82) is slidably inserted through the right side of the shielding sleeve (81). The second spring (83) is sleeved on the outside of the T-shaped baffle (82). One end of the second spring (83) is fixedly connected to the shielding sleeve (81) and the other end is fixedly connected to the T-shaped baffle (82). The L-shaped guide tube (84) is fixedly inserted through the left side of the shielding sleeve (81). The connecting rope (85) is slidably inserted inside the L-shaped guide tube (84). One end of the connecting rope (85) is fixedly connected to the T-shaped baffle (82) and the other end is fixedly connected to the annular shielding plate (71).

8. The method for detecting defects in blow molding of a bag according to claim 7, wherein The method for detecting defects in blow-molded luggage production specifically includes the following steps: S1. The bag conveyor belt (3) transports the bag to be inspected to the suction cup (57) and then starts the drive motor (43). After the drive motor (43) starts, it drives the reciprocating screw (42) to rotate continuously. During the rotation of the reciprocating screw (42), it drives the outer sleeve (47) to rise continuously. During the rise of the outer sleeve (47), the inner sleeve (45) is driven to rise continuously through the first spring (46). When the inner sleeve (45) rises, it drives the sealing plate (52) to rise. In addition, the rise of the outer sleeve (47) will also drive the lifting tray (51) to rise synchronously. S2. After the sealing plate (52) rises, it releases the seal on the top of the reciprocating screw (42). The negative pressure pipe (44) transmits negative pressure to the inside of the reciprocating screw (42) and enters the inside of the inner sleeve (45) through the top of the reciprocating screw (42). Then, it enters the inside of the suction cup (57) through the negative pressure transmission pipe (58). When the outer sleeve (47) rises to the first threshold, the lifting tray (51) passes through the bag conveyor belt (3) and contacts the bag to be tested above the bag conveyor belt (3). Subsequently, as the outer sleeve (47) continues to rise, the lifting tray (51) lifts the bag to be tested. S3. When the outer sleeve (47) rises to the second threshold, the bag to be tested comes into contact with the suction cup (57), and the suction cup (57) adsorbs the bag to be tested. Subsequently, as the outer sleeve (47) continues to rise, the sealing plate (52) drives the gear (55) to rotate continuously through the rack (53). During the rotation of the gear (55), the bag is flipped through the L-shaped arm (56) and the suction cup (57). S4. When the outer sleeve (47) rises to the third threshold, the bag to be tested is placed on the top of the first testing platform (61) by the suction cup (57). At the same time, the sealing plate (52) contacts the gear (55). Due to the obstruction of the gear (55), the sealing plate (52) cannot continue to rise. Subsequently, as the outer sleeve (47) continues to rise, the first spring (46) is compressed. At the same time, the outer sleeve (47) continues to drive the lifting rod (49) to rise through the side plate (48). S5. When the outer sleeve (47) rises to the fourth threshold, the lifting rod (49) contacts the bottom of the annular baffle (71). As the outer sleeve (47) continues to rise, the lifting rod (49) lifts the annular baffle (71). After the annular baffle (71) is lifted, the connecting rope (85) is relaxed. At this time, under the push of the second spring (83), the T-shaped baffle (82) moves to the right in sync. S6. When the outer sleeve (47) rises to the fifth threshold, the annular baffle (71) completely removes the obstruction of the first detection device (64), and the four first detection devices (64) detect the bag to be tested from the left and right sides and the front and rear sides respectively. At the same time, the T-shaped baffle (82) also removes the obstruction of the second detection device (65), so that the second detection device (65) can detect the bag from above. S7. When the outer sleeve (47) rises to the sixth threshold, the outer sleeve (47) moves to the top of the reciprocating thread on the outside of the reciprocating screw (42). As the reciprocating screw (42) continues to rotate, the outer sleeve (47) begins to descend along the reciprocating screw (42). When the outer sleeve (47) descends to the seventh threshold, the bag that has been inspected is placed on top of the bag conveyor belt (3) again, and the bag conveyor belt (3) outputs the bag that has been inspected.

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