A shoulder-joint machine rod-on-hose disengaging device
By setting a movable top extension rod at the bottom of the core rod of the injection molding machine, and using a cylinder to push the movable block to push the top extension rod, the tube body is separated from the core rod, which solves the problem of the aluminum-plastic hose being difficult to separate from the core rod and realizes a convenient material feeding process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG BAOTIAN PACKING MACHINERY
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-29
Smart Images

Figure CN224296342U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shoulder injection machine technology, specifically to a device for detaching a flexible tube from the mandrel of a shoulder injection machine. Background Technology
[0002] The injection molding machine is equipped with a mandrel. The aluminum-plastic flexible tube is fitted onto the mandrel. After being extruded by the extrusion machine and pressed by the forming mold, the tube head is made. Then, it is clamped and unloaded by a fixture. During the processing, the forming mold presses and forms the tube head. The tube body and the tube head are tightly connected and can easily get stuck on the mandrel. This can cause the tube body to be difficult to separate from the mandrel during the unloading process. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a device for detaching the flexible tube from the core rod of an injection molding machine, which addresses the shortcomings of the prior art.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A device for detaching a flexible tube from a mandrel in an injection molding machine includes a worktable, a mounting plate connected to the worktable, a mandrel machined on the mounting plate, mounting holes machined at the bottom of the mounting plate and the mandrel, a movable block disposed within the mounting holes, a slot machined on the side of the mounting holes, and a push rod extending outward from both ends of the mandrel disposed within the slot, the push rod being connected to the movable block, a guide plate disposed below the worktable, a guide sleeve mounted on the guide plate, a cylinder disposed below the guide plate, a piston end of the cylinder connected to the mounting plate, a push rod mounted on the mounting plate, the push rod passing through the guide sleeve, a push rod hole machined on the worktable corresponding to the mounting hole position, when the piston end of the cylinder extends, the push rod passes through the push rod hole and pushes the movable block within the mounting hole.
[0006] Furthermore, the mounting plate is fixed to the workbench with screws around its perimeter, and the slots on the side of the mounting holes extend to the mounting plate.
[0007] Furthermore, a spring is provided between the movable block and the bottom of the mounting hole, and the top extension rod retracts into the mounting plate when the spring compresses the movable block.
[0008] Furthermore, the movable block has a connecting groove in the middle, and the top extension rod is set in the connecting groove. The top extension rod is fixed in the connecting groove by a locking screw.
[0009] Compared with the prior art, the present invention provides a flexible tube detachment device for a mandrel of a shoulder injection machine. A movable push rod is provided at the bottom of the mandrel. During material feeding, the push rod pushes the tube body from the bottom of the mandrel, so that the tube body can be separated from the mandrel, making it easier for the clamps at the feeding station to pick up the tube body. Attached Figure Description
[0010] Figure 1This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a schematic diagram of the structure of the mandrel and mounting plate of this utility model;
[0012] Figure 3 This is a schematic diagram of the installation of the top extension rod and the movable block of this utility model;
[0013] Among them, 1. workbench, 2. mounting plate, 3. mandrel, 4. mounting hole, 5. movable block, 6. slot, 7. top extension rod, 8. guide plate, 9. guide sleeve, 10. cylinder, 11. mounting plate, 12. push rod, 13. push rod hole, 14. spring. Detailed Implementation
[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below.
[0015] like Figures 1-3 As shown, a device for detaching a flexible tube from a mandrel in a shoulder injection machine includes a worktable 1, a mounting plate 2 connected to the worktable 1, and the mounting plate 2 being fixed to the worktable 1 by screws. A mandrel 3 is machined on the mounting plate 2, and the mandrel 3 is used to fix the aluminum-plastic flexible tube. The aluminum-plastic flexible tube on the mandrel 3 is processed between various workstations by rotating the worktable 1. The bottom of the mounting plate 2 and the mandrel 3 are machined with mounting holes 4, and a movable block 5 is provided in the mounting holes 4. A slot 6 is machined on the side of the mounting holes 4, and the slot 6 extends to the mounting plate 2. A top extension rod 7 extending outward from both ends of the mandrel 3 is provided in the slot 6. The top extension rod 7 is connected to the movable block 5. A connecting groove is machined in the middle of the movable block 5, and the top extension rod 7 is placed in the connecting groove. The top extension rod 7 is fixed in the connecting groove by a locking screw.
[0016] A guide plate 8 is provided below the workbench 1, and a guide sleeve 9 is installed on the guide plate 8. A cylinder 10 is provided below the guide plate 8, and a mounting plate 11 is connected to the piston end of the cylinder 10. A push rod 12 is installed on the mounting plate 11 and passes into the guide sleeve 9. A push rod hole 13 is machined on the workbench 1 at the position corresponding to the mounting hole 4. When the piston end of the cylinder 10 extends, the push rod 12 passes through the push rod hole 13 and pushes the movable block 5 in the mounting hole.
[0017] In this embodiment, push rods 12 are installed at both ends of the mounting plate 11. The push rods 12 push the movable block 5, and the movable block 5 drives the top extension rod 7 to separate the tube body from the mandrel 3, so that the tube body can be clamped at the unloading station.
[0018] A spring 14 is provided between the movable block 5 and the bottom of the mounting hole 4. When the piston end of the cylinder retracts, the spring 14 compresses the movable block 5, the movable block 5 resets, and the extension rod 7 retracts into the slot on the mounting plate 2.
[0019] This utility model is not limited to the embodiments described. Those skilled in the art can still make some modifications or changes without departing from the spirit and scope of this utility model. Therefore, the scope of protection of this utility model shall be determined by the scope defined in the claims.
Claims
1. A device for detaching a flexible tube from a mandrel in an injection molding machine, comprising a worktable, an mounting plate connected to the worktable, and a mandrel machined on the mounting plate, characterized in that: The mounting plate and mandrel have mounting holes machined at their bottoms. A movable block is installed in each mounting hole. A slot is machined on the side of the mounting hole, and a push rod extending outward from both ends of the mandrel is installed in the slot. The push rod is connected to the movable block. A guide plate is installed below the worktable, and a guide sleeve is installed on the guide plate. A cylinder is installed below the guide plate, and the piston end of the cylinder is connected to the mounting plate. A push rod is installed on the mounting plate and passes through the guide sleeve. A push rod hole is machined on the worktable at the position corresponding to the mounting hole. When the piston end of the cylinder extends, the push rod passes through the push rod hole and pushes the movable block in the mounting hole.
2. The device for detaching the flexible tube from the mandrel of an injection molding machine according to claim 1, characterized in that: The mounting plate is fixed to the workbench with screws around its perimeter, and the slots on the side of the mounting holes extend to the mounting plate.
3. The device for detaching the flexible tube from the mandrel of an injection molding machine according to claim 2, characterized in that: A spring is provided between the movable block and the bottom of the mounting hole. When the spring compresses the movable block, the top extension rod retracts into the mounting plate.
4. The device for detaching the flexible tube from the mandrel of an injection molding machine according to claim 1, characterized in that: The movable block has a connecting groove in the middle, and the top extension rod is set in the connecting groove. The top extension rod is fixed in the connecting groove by a locking screw.