A ventilation structure for MP hollow blow molding mold

Abstract

This utility model discloses an exhaust structure for a blow molding hollow mold, including an aluminum mold body and a stabilizing docking mechanism. The aluminum mold body has evenly distributed embedded tubes inside, each containing a steel insert. The stabilizing docking mechanism includes a U-shaped buckle, a sliding frame, a precision screw, threaded cylinders, and a rear interlayer. The U-shaped buckle is fixedly connected to the aluminum mold body. The rear wall of the U-shaped buckle has a rear interlayer. The front wall of the rear interlayer is symmetrically and rotatably connected to the rear wall of the aluminum mold body by a precision screw. Threaded cylinders are threaded onto the external threaded surfaces of the precision screw. The outer arc surfaces of the two threaded cylinders are fixedly connected to the middle of a sliding frame. The rear ends of the steel inserts are fixedly connected to the front side of a sliding frame. This utility model can effectively improve the surface smoothness of blow-molded bottles.

Description

Technical Field

[0001] This utility model relates to the field of blow molding technology, specifically to an exhaust structure for an MP hollow blow molding mold. Background Technology

[0002] MP hollow blow molding molds are molds used in the mass production stage of blow-molded tool packaging boxes. These blow molding molds are characterized by fast molding speed and high quality in actual processes. Therefore, the blow molding molds need to have a good venting structure in actual use to ensure the quality of blow-molded tool packaging boxes.

[0003] The traditional design involves creating a single mold body with a sandblasted surface to form a release liner. Two vents are then created on the mold. During blow molding, the bottle expands, causing its outer wall to contact and adhere to the release liner. Air is then expelled through these vents. However, this traditional sandblasting method has some drawbacks in practical use. For example, the limited number of vents can lead to poor venting, potentially causing the plastic bottle to be compressed against the release liner during expansion, resulting in a less smooth surface finish. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an exhaust structure for MP hollow blow molding molds, which effectively improves the surface smoothness of blow-molded bottles and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an exhaust structure for an MP hollow blow molding mold, comprising an aluminum mold body and a stable docking mechanism; The interior of the aluminum mold body is provided with evenly distributed inlaid tubes, and each inlaid tube is provided with a steel inlaid tube. The stable docking mechanism includes a U-shaped buckle, a sliding frame, a precision lead screw, a threaded cylinder, and a rear interlayer. The U-shaped buckle is fixedly connected to the aluminum mold body. The rear wall of the U-shaped buckle is provided with a rear interlayer. The front wall of the rear interlayer is symmetrically and rotatably connected to the rear wall of the aluminum mold body with a precision lead screw. The outer thread surface of the precision lead screw is threadedly connected to a threaded cylinder. The outer arc surfaces of the two threaded cylinders are fixedly connected to the middle of a sliding frame. The rear end of the steel inlay tube is fixedly connected to the front side of a sliding frame.

[0006] Furthermore, the stable docking mechanism also includes limiting rods and sliding cylinders. The limiting rods are uniformly and fixedly connected between the front side wall of the rear interlayer and the rear side wall of the aluminum mold body. The outer arc surface of the limiting rods is slidably connected to the sliding cylinders respectively. The outer arc surfaces of the four sliding cylinders are fixedly connected to the middle of a sliding frame to achieve the function of stable support on the upper and lower sides.

[0007] Furthermore, the stable docking mechanism also includes driven gears and driving gears. The driven gears are fixedly connected to the rear ends of the two precision lead screws respectively. The driving gear is rotatably connected between the front and rear inner walls of the rear interlayer through a rotating shaft. The two driven gears are meshed with one driving gear. The two driven gears and one driving gear are all located inside the rear interlayer to realize the function of driving the lead screws to rotate.

[0008] Furthermore, sealing plates are fixedly connected to the upper and lower surfaces of the U-shaped buckle to achieve the function of sealing precision parts.

[0009] Furthermore, the lower sealing plate has two symmetrically fixed air outlet pipes in the middle. The two air outlet pipes are connected to the rear end of the steel inlaid pipe on the same side through the diverter pipe to realize the function of air outlet.

[0010] Furthermore, a base is fixedly connected to the upper end of the aluminum mold body, and a thin plate insert is fixedly connected to the lower end of the aluminum mold body, thereby achieving the function of fixing the structure.

[0011] Furthermore, the inner arc surface of the inlaid tube is provided with a pre-insertion interface, and the outer arc surface of the steel inlaid tube is provided with a pre-insertion joint. The pre-insertion joint contacts the pre-insertion interface to ensure airtightness.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The system employs a precision lead screw drive structure to drive the sliding frame to move back and forth, which in turn drives the steel insert tube to move forward and insert into the inner wall of the insert tube. During the blow molding process of the blow-molded bottle, the air between the aluminum mold body and the blow-molded bottle can be discharged to the outside of the structure through the steel insert tube. At the same time, the steel insert tube and the insert tube have a high degree of overlap, which effectively improves the surface smoothness of the blow-molded bottle. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention in an explosion. Figure 3 This is a rear view structural diagram of the aluminum mold body of this utility model; Figure 4 This is a cross-sectional structural schematic diagram of the stable docking mechanism of this utility model; Figure 5 This is a schematic diagram of the planar structure of the inlaid tube and the steel inlaid tube of this utility model.

[0014] In the diagram: 1. Base, 2. Aluminum mold body, 3. Inlaid tube, 4. Thin plate inlay, 5. Steel inlay, 6. Stable docking mechanism, 61. U-shaped buckle, 62. Sliding frame, 63. Limiting rod, 64. Precision lead screw, 65. Slide cylinder, 66. Threaded cylinder, 67. Rear side interlayer, 68. Driven gear, 69. Drive gear, 7. Air outlet pipe, 8. Sealing plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This embodiment provides a technical solution: an exhaust structure for an MP hollow blow molding mold, including an aluminum mold body 2 and a stable docking mechanism 6.

[0017] The aluminum mold body 2 has evenly distributed inlay tubes 3 inside, and steel inlay tubes 5 are installed inside the inlay tubes 3. The upper end of the aluminum mold body 2 is fixedly connected to the base 1, and the lower end of the aluminum mold body 2 is fixedly connected to the thin plate inlay 4. The rear side of the inner arc surface of the inlay tube 3 is provided with a pre-insertion interface, and the rear side of the outer arc surface of the steel inlay tube 5 is provided with a pre-insertion connector.

[0018] The stabilizing docking mechanism 6 includes a U-shaped buckle 61, a sliding frame 62, a precision lead screw 64, a threaded cylinder 66, and a rear interlayer 67. The U-shaped buckle 61 is fixedly connected to the aluminum mold body 2. The rear wall of the U-shaped buckle 61 is provided with a rear interlayer 67. The front wall of the rear interlayer 67 is symmetrically and rotatably connected to the rear wall of the aluminum mold body 2 with the precision lead screw 64. The external thread surface of the precision lead screw 64 is threadedly connected to the threaded cylinder 66. The outer arc surfaces of the two threaded cylinders 66 are fixedly connected to the middle of a sliding frame 62. The rear end of the steel inlay tube 5 is fixedly connected to the front side of a sliding frame 62. Structure 6 also includes limiting rods 63 and sliding cylinders 65. The limiting rods 63 are evenly and fixedly connected between the front side wall of the rear interlayer 67 and the rear side wall of the aluminum mold body 2. The outer arc surfaces of the limiting rods 63 are slidably connected to the sliding cylinders 65, and the outer arc surfaces of the four sliding cylinders 65 are fixedly connected to the middle of a sliding frame 62. The stabilizing docking mechanism 6 also includes driven gears 68 and driving gears 69. The driven gears 68 are fixedly connected to the rear ends of two precision lead screws 64, and the driving gears 69 are rotatably connected between the front and rear inner walls of the rear interlayer 67 through a rotating shaft. The two driven gears 68 are meshed with one driving gear 69. Gear 68 and a drive gear 69 are both located inside the rear interlayer 67. A sealing plate 8 is fixedly connected to the upper and lower surfaces of the U-shaped buckle 61, respectively. A vent pipe 7 is symmetrically fixedly connected to the middle of the lower sealing plate 8. The vent pipe 7 is a flexible hose, with a specified length reserved inside the U-shaped buckle 61. When the sliding frame 62 moves to the foremost position, the reserved portion of the vent pipe 7 inside the U-shaped buckle 61 is taut, indicating that the system is in a venting state. When the sliding frame 62 moves to the rearmost position, the reserved portion of the vent pipe 7 inside the U-shaped buckle 61 is not taut. In this state, exhaust operations cannot be performed (the exhaust pipe 7 is made of silicone heat-insulating fiber material). The sealing plate 8 seals the upper and lower sides of the U-shaped buckle 61 to prevent the parts inside the sliding frame 62 from being contaminated. For example, the external thread surface of the precision lead screw 64 and the outer arc surface of the limit rod 63 will not be contaminated with dirt, which would affect the transmission efficiency. The two exhaust pipes 7 are divided into two parts by the sealing plate 8. The upper exhaust pipe 7 is reserved to a specified length inside the U-shaped buckle 61, and the lower end of the lower exhaust pipe 7 is connected to the outside of the external exhaust gas collection equipment. The two exhaust pipes 7 are respectively connected to the rear end of the steel inlaid pipe 5 located on the same side through the diversion pipe.

[0019] The working principle of this utility model is as follows: When the blow molding hollow mold venting structure is needed, the material to be blow molded can be placed inside the aluminum mold body 2, and then another mold can be used to clamp the material to be blow molded together. At this point, the drive gear 69 can be rotated by an external drive device (which can be a servo motor or a manual torsion valve). The drive gear 69 is meshed with two driven gears 68 and one drive gear 69. The two driven gears 68 rotate synchronously, which in turn drives two precision lead screws 64 (the precision lead screws 64 can be Tr18 type precision trapezoidal lead screws with a diameter tolerance of 0.01mm, a pitch of 2mm, a length of 40mm, and a transmission ratio of 2:1 between the driven gears 68 and the drive gear 69) to rotate synchronously. This, in turn, drives the sliding frame 62 to move back and forth through two threaded cylinders 66 until the pre-insertion joint on the steel inlay tube 5 is inserted into the pre-insertion interface. During the movement, the sliding cylinder 65 and the limit rod 63 maintain a sliding connection in real time, supporting the upper and lower sides of the sliding frame 62 so that it can be in a vertical state in real time. At this time, the steel inlay tube 5 passes through the inlay tube 3, and the front end of the steel inlay tube 5 coincides with the inner wall of the aluminum mold body 2. At this point, the external blow molding equipment can be adjusted, and the blow-molded material expands rapidly and adheres to the inner wall of the aluminum mold body 2. At this time, the air between the aluminum mold body 2 and the outer surface of the blow-molded material will be discharged through the steel inlay pipe 5 and then discharged to the outside of the structure by the air outlet pipe 7, thus completing the air venting operation in the blow molding process.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An exhaust structure of a hollow mold for MP hollow molding blow molding, characterized by: Includes an aluminum mold body (2) and a stable docking mechanism (6); The aluminum mold body (2) is provided with uniformly distributed inlaid tubes (3), and each inlaid tube (3) is provided with a steel inlaid tube (5). The stable docking mechanism (6) includes a U-shaped buckle (61), a sliding frame (62), a precision screw (64), a threaded cylinder (66), and a rear interlayer (67). The U-shaped buckle (61) is fixedly connected to the aluminum mold body (2). The rear side wall of the U-shaped buckle (61) is provided with a rear interlayer (67). The front side wall of the rear interlayer (67) and the rear side wall of the aluminum mold body (2) are symmetrically connected to the precision screw (64) in a vertical rotation. The outer thread surface of the precision screw (64) is threadedly connected to the threaded cylinder (66). The outer arc surface of the two threaded cylinders (66) is fixedly connected to the middle of a sliding frame (62). The rear end of the steel inlay tube (5) is fixedly connected to the front side of a sliding frame (62).

2. The venting structure of an MP hollow blow molding mold according to claim 1, characterized in that: The stable docking mechanism (6) also includes a limiting rod (63) and a sliding cylinder (65). The limiting rod (63) is uniformly fixed between the front side wall of the rear interlayer (67) and the rear side wall of the aluminum mold body (2). The outer arc surface of the limiting rod (63) is slidably connected to the sliding cylinder (65). The outer arc surface of the four sliding cylinders (65) is fixedly connected to the middle of a sliding frame (62).

3. The exhaust structure of a hollow mold for MP hollow molding and blow molding according to claim 1, characterized in that: The stable docking mechanism (6) also includes a driven gear (68) and a drive gear (69). The driven gear (68) is fixedly connected to the rear end of two precision lead screws (64). The drive gear (69) is rotatably connected between the front and rear inner walls of the rear interlayer (67) through a rotating shaft. The two driven gears (68) are meshed with one drive gear (69). The two driven gears (68) and one drive gear (69) are all located inside the rear interlayer (67).

4. The exhaust structure of a hollow mold for MP hollow molding and blow molding according to claim 1, characterized in that: The upper and lower surfaces of the U-shaped buckle (61) are respectively fixedly connected with sealing plates (8).

5. The exhaust structure of a hollow mold for MP hollow molding and blow molding according to claim 4, characterized in that: The lower sealing plate (8) is symmetrically fixed with air outlet pipes (7) in the middle. The two air outlet pipes (7) are connected to the rear end of the steel inlaid pipe (5) located on the same side through the diversion pipe.

6. The exhaust structure of a hollow mold for MP hollow molding and blow molding according to claim 1, characterized in that: The upper end of the aluminum mold body (2) is fixedly connected to a base (1), and the lower end of the aluminum mold body (2) is fixedly connected to a thin plate insert (4).

7. The exhaust structure of a hollow mold for MP hollow molding and blow molding according to Claim 1, characterized in that: The inner arc surface of the inlaid tube (3) is provided with a pre-insertion interface, and the outer arc surface of the steel inlaid tube (5) is provided with a pre-insertion connector.

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