A blow mold cavity inspection device

Abstract

This utility model discloses a blow molding mold cavity inspection device, relating to the field of mold inspection technology. The device includes a rectangular base, with a first device groove vertically formed along its length on the front of the upper surface of the base. A threaded rod is laterally rotatably connected inside the first device groove along its length. The blow molding mold cavity inspection device includes a placement seat and a turntable. In use, the mold is placed on the placement plate and clamped and fixed by a clamping structure. The position of the placement seat is then adjusted according to the specific specifications of the mold. Next, the rotation of the turntable is controlled to apply and wipe the fluorescent agent from the mold cavity. Finally, the mold is removed from the placement seat and irradiated with an ultraviolet lamp to determine if there are any defects in the mold cavity. The entire process is automated, requiring no manual operation, reducing labor intensity and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold testing technology, and in particular to a blow molding mold internal cavity testing device. Background Technology

[0002] Blow molding is a mainstream plastic molding technology. Its core principle is to use "blowing expansion" to allow heated and softened plastic preforms to adhere to the inner wall of a mold, resulting in hollow or specifically shaped plastic products after cooling. It is widely used in daily necessities, industrial packaging, and automotive parts. The process typically involves four key steps: First, the plastic raw material is heated and melted, then extruded or injection molded into a tubular "preform." Next, the preform is moved into a customized mold cavity, the mold is closed, and compressed air is introduced from one end of the preform, causing the softened plastic to adhere tightly to the inner wall of the mold under air pressure, forming a shape consistent with the mold cavity. Then, cooling water is introduced into the mold to rapidly cool and solidify the plastic. Finally, the mold is opened, the finished product is removed, and excess edges are trimmed, resulting in final products such as plastic bottles, laundry detergent containers, car fuel tanks, and toy shells. The advantages of blow molding lie in its ability to efficiently produce complex hollow structures with uniform wall thickness, lower cost, and suitability for large-scale mass production. It is one of the important technological pathways in the modern plastics industry to realize the transformation "from plastic granules to practical products."

[0003] Blow molding requires the use of blow molds. The inner cavity of the blow mold is the "molding template" for the blow-molded product. The size, shape, and surface quality of the product are completely replicated from the inner cavity. The core of inner cavity inspection is to detect abnormalities such as cracks and scratches on the inner cavity surface in advance, so as to avoid defects such as leakage, deformation, bubbles, and appearance flaws in the product. There are currently a variety of inspection methods. The simplest and most direct one is to apply a fluorescent agent to the surface of the mold inner cavity, wait for it to dry, and then wipe it off with a cleaning agent. Afterwards, the fluorescent agent residue is observed under ultraviolet light to determine whether there are cracks or other problems in the mold inner cavity. However, this method is generally operated manually throughout the entire process, which is quite inconvenient.

[0004] Therefore, how to automate the detection of fluorescent agents in the inner cavity of molds is a technical problem that urgently needs to be solved in the industry. Utility Model Content

[0005] The main purpose of this invention is to provide a blow molding mold cavity detection device, which aims to automate the detection of fluorescent agents in the mold cavity.

[0006] This utility model proposes a blow molding die cavity inspection device, including a rectangular base. The front part of the upper surface of the base has a first device groove vertically opened along its length direction. A threaded rod is rotatably connected to the inside of the first device groove along its length direction. A threaded sleeve is threadedly connected to the outer surface of the threaded rod. A movable seat is slidably connected to the outer surface of the threaded sleeve and is fixedly connected to the outer surface of the threaded sleeve. A plurality of cylinders are vertically fixedly connected to the upper surface of the movable seat. A placement seat is horizontally fixedly connected to the top of the plurality of cylinders. A clamping structure is provided on the placement seat.

[0007] Preferably, the clamping structure includes a second device groove vertically formed on the upper surface of the placement seat along its length direction. A bidirectional threaded rod is rotatably connected to the interior of the second device groove along its length direction. Both ends of the bidirectional threaded rod are threaded with screw sleeves. Sliding blocks that are slidably connected to the outer surfaces of the two screw sleeves are fixedly connected to the outer surfaces of the two screw sleeves. Clamping claws are fixedly connected to the top of the opposite side surfaces of the two sliding blocks.

[0008] Preferably, a first motor is laterally fixedly connected to the middle of the front end of the base, and the output shaft of the first motor rotatably passes through the base and is fixedly connected to one end of the threaded rod. A second motor is laterally fixedly connected to one side surface of the placement seat, and the output shaft of the second motor rotatably passes through one side surface of the placement seat and is fixedly connected to one end of the bidirectional threaded rod.

[0009] Preferably, a turntable is vertically rotatably connected to the rear part of the upper surface of the base. Two third motors are fixedly connected to the outer edge of the upper surface of the turntable. Rotating rods extending along the radius of the turntable are fixedly connected to the outer edges of the output shafts of the two third motors. Brush strips and cotton swab strips are respectively provided on the outer surfaces of the two rotating rods along their length.

[0010] Preferably, each of the two third motors is fixedly connected to a mounting base, and each of the two mounting bases is fixedly connected to a horizontal tube extending along the direction of the two rotating rods. The bottom ends of the two horizontal tubes are vertically connected with multiple liquid outlet holes.

[0011] Preferably, two liquid tanks are fixedly connected to the upper surface of the turntable, and each of the two liquid tanks is equipped with a liquid pump. The inlets of the two liquid pumps are connected to the two liquid tanks through inlet pipes, and the outlets of the two liquid pumps are connected to the two horizontal pipes through delivery pipes.

[0012] This invention, through the setting of a placement seat and a turntable, allows the mold to be placed on a placement plate and clamped and fixed by a clamping structure during use. The position of the placement seat is then adjusted according to the specific specifications of the mold, aligning the inner cavity of the mold with a rotating rod. Next, the rotating rod, with brush strips on its outer surface, is moved onto the inner cavity of the mold, and fluorescent agent is pumped into the horizontal tube above the brush strips. As the fluorescent agent flows out from the outlet of the horizontal tube, it drips onto the brush strips, and with the continuous rotation of the brush strips, the fluorescent agent is evenly applied to the inner cavity of the mold. Then, a cotton swab is rotated into the inner cavity of the mold, and cleaning agent is discharged through the horizontal tube on the cotton swab. The continuous rotation of the cotton swab wipes away the dried fluorescent agent in the inner cavity of the mold. Finally, the mold can be removed from the placement seat, and ultraviolet light is used to inspect the inner cavity for defects. The entire process is automated, requiring no manual operation, reducing labor intensity and improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of a portion of area A in the middle;

[0015] Figure 3 This is a schematic diagram of the placement base in this utility model.

[0016] In the diagram: 1. Base, 2. First device slot, 3. Threaded rod, 4. Movable seat, 5. Cylinder, 6. Placement seat, 7. Second device slot, 8. Bidirectional threaded rod, 9. Sliding block, 10. First motor, 11. Second motor, 12. Turntable, 13. Third motor, 14. Rotating rod, 15. Brush strip, 16. Cotton swab strip, 17. Mounting seat, 18. Horizontal tube, 19. Liquid tank.

[0017] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] Reference Figure 1-3This invention proposes an embodiment of a blow molding die cavity detection device, comprising a rectangular base 1. A first device groove 2 is vertically opened at the front of the upper surface of the base 1 and is arranged along its length direction. A threaded rod 3 is laterally rotatably connected inside the first device groove 2 along its length direction. A threaded sleeve is threadedly connected to the outer surface of the threaded rod 3. A movable seat 4 is slidably connected to the outer surface of the threaded sleeve and is fixedly connected to the outer surface of the threaded sleeve. A plurality of cylinders 5 are vertically fixedly connected to the upper surface of the movable seat 4. A placement seat 6 is laterally fixedly connected to the top of the plurality of cylinders 5 and is provided with a clamping structure on the placement seat 6.

[0020] A turntable 12 is vertically rotatably connected to the rear part of the upper surface of the base 1. Two third motors 13 are fixedly connected to the outer edge of the upper surface of the turntable 12. Rotating rods 14 extending along the radius of the turntable 12 are fixedly connected to the outer edge of the output shafts of the two third motors 13. Brush strips 15 and cotton swab strips 16 are respectively provided on the outer surface of the two rotating rods 14 along their length.

[0021] The top of each of the two third motors 13 is fixedly connected to a mounting base 17. The top of each of the two mounting bases 17 is fixedly connected to a horizontal tube 18 extending along the direction of the two rotating rods 14. The bottom of each of the two horizontal tubes 18 is vertically opened with multiple liquid outlet holes.

[0022] In use, the mold is placed on the upper surface of the placement seat 6 and then clamped and fixed by the clamping structure. Multiple cylinders 5 are then controlled to retract, causing the mold to descend. At this time, the turntable 12 rotates, rotating the rotating rod 14 with the brush strip 15 above the mold cavity. The threaded rod 3 moves, driving the movable seat 4 to adjust the mold's position to correspond with the end of the brush strip 15. The fluorescent agent then flows out through the outlet hole of the horizontal tube 18 above the brush strip 15 and drips onto it. Simultaneously, multiple cylinders 5 extend, moving the mold upwards so that the brush strip 15 can contact the mold cavity. Driven by the output shaft of the third motor 13, the brush strip 15 begins to... The rotating mechanism evenly coats the inner surface of the mold with fluorescent agent. After coating, multiple cylinders 5 descend again, while brush strips 15 move away from the top of the mold under the drive of the turntable 12. Cotton swabs 16 move to the top of the mold. After waiting for 5-10 minutes, the fluorescent agent dries. At this time, multiple cylinders 5 extend again, moving the mold upward until the inner cavity of the mold contacts the cotton swabs 16. The liquid outlet of the horizontal tube 18 above the cotton swabs 16 discharges cleaning agent. Combined with the continuous rotation of the cotton swabs 16, the fluorescent agent adhering to the inner surface of the mold can be cleaned. Then, the mold can be removed from the device and the residual traces of fluorescent agent can be observed by irradiating with an ultraviolet lamp to determine whether there are any defects in the inner cavity of the mold.

[0023] The turntable 12 has an internal drive structure that can drive it to rotate.

[0024] The device is equipped with a synchronizer, which can control multiple cylinders 5 to extend and retract synchronously.

[0025] Furthermore, the clamping structure includes a second device groove 7 vertically opened on the upper surface of the placement seat 6 along its length direction. A bidirectional threaded rod 8 is laterally rotatably connected inside the second device groove 7 along its length direction. Both ends of the bidirectional threaded rod 8 are threadedly connected to screw sleeves. Sliding blocks 9 are slidably connected to the outer surfaces of the two screw sleeves and are fixedly connected to the inner surfaces of the second device groove 7. Claws are fixedly connected to the top of the opposite side surfaces of the two sliding blocks 9.

[0026] A first motor 10 is horizontally fixedly connected to the middle of the front end of the base 1. The output shaft of the first motor 10 rotatably passes through the base 1 and is fixedly connected to one end of the threaded rod 3. A second motor 11 is horizontally fixedly connected to one side surface of the placement seat 6. The output shaft of the second motor 11 rotatably passes through one side surface of the placement seat 6 and is fixedly connected to one end of the bidirectional threaded rod 8.

[0027] When the first motor 10 is running, its output shaft rotates, which drives the threaded rod 3 to rotate, thereby controlling the threaded sleeve to move along its length, driving the movable seat 4 to move, and thus driving the mold to move horizontally. When the second motor 11 is running, its output shaft rotates, which drives the bidirectional threaded rod 8 to rotate. The two screw sleeves on the outer surface of the bidirectional threaded rod 8 will move in opposite directions, thereby clamping and fixing the mold through the grippers on the sliding block 9 which is fixedly connected to the outer surfaces of the two. The inner surface of the grippers is provided with anti-slip teeth, which can improve the stability of clamping and fixing. In addition, this structure can also ensure that the mold is fixed in the middle of the placement seat 6, which is convenient for alignment.

[0028] Furthermore, two liquid tanks 19 are fixedly connected to the upper surface of the turntable 12. Each of the two liquid tanks 19 is equipped with a liquid pump. The inlets of the two liquid pumps are connected to the two liquid tanks 19 through inlet pipes, and the outlets of the two liquid pumps are connected to the two horizontal pipes 18 through delivery pipes.

[0029] The two liquid tanks 19 contain fluorescent agent and cleaning agent respectively. The fluorescent agent and cleaning agent inside the two tanks are pumped into the two horizontal tubes 18 by the liquid pumps on the two tanks.

[0030] In use, the mold is placed on the upper surface of the placement seat 6 and then clamped and fixed by the clamping structure. Multiple cylinders 5 are then controlled to retract, causing the mold to descend. At this time, the turntable 12 rotates, rotating the rotating rod 14 with the brush strip 15 above the mold cavity. The threaded rod 3 moves, driving the movable seat 4 to adjust the mold's position to correspond with the end of the brush strip 15. The fluorescent agent then flows out through the outlet hole of the horizontal tube 18 above the brush strip 15 and drips onto it. Simultaneously, multiple cylinders 5 extend, moving the mold upwards so that the brush strip 15 can contact the mold cavity. Driven by the output shaft of the third motor 13, the brush strip 15 begins to... The rotating mechanism evenly coats the inner surface of the mold with fluorescent agent. After coating, multiple cylinders 5 descend again, while brush strips 15 move away from the top of the mold under the drive of the turntable 12. Cotton swabs 16 move to the top of the mold. After waiting for 5-10 minutes, the fluorescent agent dries. At this time, multiple cylinders 5 extend again, moving the mold upward until the inner cavity of the mold contacts the cotton swabs 16. The liquid outlet of the horizontal tube 18 above the cotton swabs 16 discharges cleaning agent. Combined with the continuous rotation of the cotton swabs 16, the fluorescent agent adhering to the inner surface of the mold can be cleaned. Then, the mold can be removed from the device and the residual traces of fluorescent agent can be observed by irradiating with an ultraviolet lamp to determine whether there are any defects in the inner cavity of the mold.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A blow molding die cavity inspection device, characterized in that, The device includes a rectangular base (1), the front of the upper surface of the base (1) is vertically provided with a first device groove (2) along its length direction, the inside of the first device groove (2) is rotatably connected to a threaded rod (3) along its length direction, the outer surface of the threaded rod (3) is threadedly connected to a threaded sleeve, the outer surface of the threaded sleeve is fixedly connected to a movable seat (4) slidably connected inside the first device groove (2), the upper surface of the movable seat (4) is vertically fixedly connected to a plurality of cylinders (5), the top of the plurality of cylinders (5) is horizontally fixedly connected to a placement seat (6), and the placement seat (6) is provided with a clamping structure.

2. The blow molding die cavity detection device according to claim 1, characterized in that, The clamping structure includes a second device groove (7) vertically opened on the upper surface of the placement seat (6) along its length direction. A bidirectional threaded rod (8) is rotatably connected to the interior of the second device groove (7) along its length direction. Both ends of the bidirectional threaded rod (8) are threaded with screw sleeves. Sliding blocks (9) that are slidably connected to the outer surfaces of the two screw sleeves are fixedly connected to the outer surfaces of the two screw sleeves. Claws are fixedly connected to the top of the opposite side surfaces of the two sliding blocks (9).

3. The blow mold cavity detection device according to claim 2, characterized in that, A first motor (10) is horizontally fixedly connected to the middle of the front end of the base (1). The output shaft of the first motor (10) rotatably passes through the base (1) and is fixedly connected to one end of the threaded rod (3). A second motor (11) is horizontally fixedly connected to one side surface of the placement seat (6). The output shaft of the second motor (11) rotatably passes through one side surface of the placement seat (6) and is fixedly connected to one end of the bidirectional threaded rod (8).

4. The blow molding die cavity detection device according to claim 1, characterized in that, A turntable (12) is vertically rotatably connected to the rear part of the upper surface of the base (1). Two third motors (13) are fixedly connected to the outer edge of the upper surface of the turntable (12). Rotating rods (14) extending along the radius of the turntable (12) are fixedly connected to the outer edges of the output shafts of the two third motors (13). Brush strips (15) and cotton swabs (16) are respectively provided on the outer surfaces of the two rotating rods (14) along their length direction.

5. The blow molding die cavity detection device according to claim 4, characterized in that, The top ends of the two third motors (13) are fixedly connected to mounting bases (17), and the top ends of the two mounting bases (17) are respectively fixedly connected to horizontal tubes (18) extending along the direction of the two rotating rods (14). The bottom ends of the two horizontal tubes (18) are vertically connected with multiple liquid outlet holes.

6. The blow mold cavity detection device according to claim 5, characterized in that, Two liquid tanks (19) are fixedly connected to the upper surface of the turntable (12). Each of the two liquid tanks (19) is equipped with a liquid pump. The inlets of the two liquid pumps are connected to the two liquid tanks (19) through inlet pipes, and the outlets of the two liquid pumps are connected to the two horizontal pipes (18) through water supply pipes.

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