Pipe contracting machine with protective device
By designing a protective shell and an automated loading and unloading mechanism on the tube shrinking machine, the safety risks of workers handling metal tubes by hand are solved, automated loading and unloading are achieved, the labor intensity and operational risks of workers are reduced, and the processing safety is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AIXI NUOER ELECTRIC APPLIANCE ELEMENTS (HUAIAN) CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-19
AI Technical Summary
During the shrinking process of the heating element in a coffee machine, workers may accidentally touch the exposed shrinking mold while handling the metal tube, posing a risk of injury.
A tube shrinking machine with a protective device was designed, including a protective shell and a feeding mechanism. The feeding bracket is driven by a cylinder to realize the automated feeding and unloading of metal tubes. Combined with a flipping mechanism, the unloading is realized, reducing the intensity of manual operation and safety risks.
The automated loading and unloading of metal pipes has been achieved, reducing the labor intensity and operational risks for workers and improving processing safety.
Smart Images

Figure CN224254048U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tube shrinking technology, specifically a tube shrinking machine with a protective device. Background Technology
[0002] The heating element of a coffee machine is the core heating component, responsible for quickly heating cold water to the required brewing temperature. It is typically made of food-grade stainless steel or copper, and features a built-in high-resistance heating wire, achieving efficient heating through direct contact heating or indirect heat exchange technology. Commercial models are equipped with dual heating elements, supporting both instantaneous heating and constant temperature regulation to ensure stable coffee extraction, while also featuring dry-burn protection and automatic descaling to extend their lifespan.
[0003] In the manufacturing process of heating elements for coffee machines, a crucial step is the tube reduction process at the end of the metal tube. During this process, the worker holds the metal tube and feeds it into the die of a tube reduction machine. Through the precise compression of the die, the diameter of this end of the metal tube is reduced to the required size. However, in this process, the die is completely exposed, meaning that if the worker's hand accidentally touches the operating die, accidental injury may occur. Therefore, a tube reduction machine with a protective device is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a tube shrinking machine with a protective device to solve the problems in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tube shrinking machine with a protective device, comprising a tube shrinking machine body, a tube shrinking mold on the tube shrinking machine body, a protective shell on the tube shrinking mold, an inlet and outlet on one side of the protective shell, a feeding mechanism at the inlet and outlet, the feeding mechanism comprising a frame fixedly mounted on the protective shell, a cylinder fixedly mounted at one end of the frame, a feeding bracket rotatably connected to the output end of the cylinder, a discharge port below the feeding bracket, and a flipping mechanism between the feeding bracket and the frame.
[0006] Preferably, a rotating connecting sleeve is fixedly installed on the feeding bracket, a damping plate is provided inside the rotating connecting sleeve, a metal tube is provided inside the feeding bracket, and an installation notch is opened at the bottom of the mechanism frame.
[0007] Preferably, a mounting hole is provided at one end of the mechanism frame, and the cylinder is mounted at one end of the mechanism frame through the mounting hole.
[0008] Preferably, the output end of the cylinder is rotatably installed in the feeding bracket through a rotating connecting sleeve, and the feeding bracket is aligned with the inlet and outlet on the protective shell. The inlet and outlet of the feeding bracket extend into the protective shell. The unloading port is installed on the mechanism frame through an installation notch. The feeding bracket is movably installed below the unloading port through the cylinder.
[0009] Preferably, the flipping mechanism includes a sliding sleeve fixedly installed on the mechanism frame and a rotating sleeve fixedly installed on the feeding bracket. A docking base is fixedly installed on the sliding sleeve, and a docking screw hole is provided on the docking base. A rotating groove is provided on the inner wall of the sliding sleeve. A connecting screw is fixedly installed at one end of the rotating sleeve, and a sliding support foot is fixedly installed on the outer wall of the rotating sleeve.
[0010] Preferably, the docking screw hole is provided with a bolt, and the docking base is fixedly installed on the mechanism frame by the bolt.
[0011] Preferably, the sliding sleeve is mounted on the mechanism frame via a docking base, the rotating sleeve is mounted on the feeding bracket via a connecting screw, and the sliding sleeve and the rotating sleeve are aligned front to back. The sliding support foot is slidably mounted on the sliding sleeve via a rotating groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. In this application, after the metal tube is placed on the loading bracket, the extension of the cylinder is controlled. The movement of the cylinder guides the metal tube forward until it enters the tube shrinking mold. This process automates the loading action, effectively reducing the labor intensity of workers and lowering operational risks. During the operation of the loading bracket, the contact between the damping plate and the output end of the cylinder ensures that the loading bracket does not rotate arbitrarily during the loading process.
[0014] 2. In this application, after the tube shrinking process is completed, the cylinder can be retracted. Subsequently, the feeding bracket guides the metal tube to above the discharge port. When the metal tube reaches above the discharge port, the cylinder can further shrink. As the cylinder shrinks, the rotating sleeve enters the sliding sleeve, and the sliding support on the rotating sleeve slides along the rotating groove, causing the rotating sleeve to rotate. The rotation of the rotating sleeve will cause the feeding bracket to flip, thereby pouring the metal tube from the feeding bracket into the discharge port, realizing an automatic unloading process. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a partial structural schematic diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the feeding mechanism of this utility model;
[0018] Figure 4 This is a schematic diagram of the flipping mechanism of this utility model.
[0019] The following are the labeling elements in the diagram: 1. Tube shrinking machine body; 2. Tube shrinking mold; 3. Protective shell; 4. Inlet and outlet; 5. Feeding mechanism; 501. Mechanism frame; 502. Cylinder; 503. Rotary connecting sleeve; 504. Damping plate; 505. Feeding bracket; 506. Mounting notch; 507. Discharge port; 6. Tilting mechanism; 601. Docking base; 602. Docking screw hole; 603. Sliding sleeve; 604. Rotary slide; 605. Sliding support; 606. Rotary sleeve; 607. Connecting screw; 7. Metal tube. Detailed Implementation
[0020] 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.
[0021] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a tube shrinking machine with a protective device, including a tube shrinking machine body 1, a tube shrinking mold 2 on the tube shrinking machine body 1, a protective shell 3 on the tube shrinking mold 2, an inlet and outlet 4 on one side of the protective shell 3, a feeding mechanism 5 at the inlet and outlet 4, and a flipping mechanism 6 between the feeding bracket 505 and the mechanism frame 501. Through the cooperation of the feeding mechanism 5 and the flipping mechanism 6, the automatic loading and unloading of workpieces can be realized, reducing the labor intensity of workers and the risk of operation.
[0022] like Figure 2 and Figure 3 As shown, the feeding mechanism 5 includes a mechanism frame 501 fixedly installed on the protective shell 3. A cylinder 502 is fixedly installed at one end of the mechanism frame 501. The output end of the cylinder 502 is rotatably connected to a feeding bracket 505. A discharge port 507 is provided below the feeding bracket 505. A rotating connecting sleeve 503 is fixedly installed on the feeding bracket 505. A damping plate 504 is provided inside the rotating connecting sleeve 503. A metal tube 7 is provided inside the feeding bracket 505. An installation notch 506 is opened at the bottom of the mechanism frame 501. An installation hole is opened at one end of the mechanism frame 501. The cylinder 502 is installed at one end of the mechanism frame 501 through the installation hole.
[0023] Specifically, after the metal tube 7 is placed on the loading bracket 505, the extension action of the control cylinder 502 can be activated. Once the cylinder 502 extends, it will drive the metal tube 7 forward, allowing the metal tube 7 to smoothly enter the tube shrinking mold 2. This process replaces manual operation, realizing automated loading, effectively reducing the labor intensity of workers and the risks of operation. During the operation of the loading bracket 505, the damping plate 504 will contact the output end of the cylinder 502, playing a hindering role. This design can prevent the loading bracket 505 from rotating randomly during the loading process, ensuring the stability and safety of the entire loading process.
[0024] like Figure 2 and Figure 4 As shown, the flipping mechanism 6 includes a sliding sleeve 603 fixedly installed on the mechanism frame 501 and a rotating sleeve 606 fixedly installed on the feeding bracket 505. A docking base 601 is fixedly installed on the sliding sleeve 603. A docking screw hole 602 is provided on the docking base 601. A rotating groove 604 is provided on the inner wall of the sliding sleeve 603. A connecting screw 607 is fixedly installed at one end of the rotating sleeve 606. A sliding support foot 605 is fixedly installed on the outer wall of the rotating sleeve 606. A bolt is provided in the docking screw hole 602. The docking base 601 is fixedly installed on the mechanism frame 501 by bolts.
[0025] Specifically, after completing the tube shrinking process, the operator can retract the cylinder 502. When the cylinder 502 is retracted, the loading bracket 505 will move accordingly, moving the metal tube 7 directly above the discharge port 507. Once the metal tube 7 reaches above the discharge port 507, the operator can further control the cylinder 502 to continue the shrinking action. As the cylinder 502 continues to shrink, the rotating sleeve 606 will enter the sliding sleeve 603. At the same time, the sliding support 605 on the rotating sleeve 606 will slide along the rotating groove 604. This sliding action will cause the rotating sleeve 606 to rotate. When the rotating sleeve 606 begins to rotate, it will drive the loading bracket 505 to flip. The flipped loading bracket 505 will guide the metal tube 7 originally placed on it into the discharge port 507, thus completing the automatic unloading process.
[0026] Working Principle: The protective outer shell 3 covers the outside of the tube shrinking mold 2, preventing the user from contacting the mold 2 during the tube shrinking process and improving processing safety. During processing, simply place the metal tube 7 on the loading bracket 505. After the metal tube 7 is placed on the loading bracket 505, the cylinder 502 can be extended. The extended cylinder 502 will drive the metal tube 7 forward, eventually entering the tube shrinking mold 2. This automatically replaces manual loading, reducing the labor intensity and operational risks for workers. When the loading bracket 505 operates, the damping plate 504 will abut against the output end of the cylinder 502, preventing the loading bracket 505 from rotating arbitrarily during loading. After entering the tube shrinking mold 2, the metal tube 7 will be squeezed by the mold, thereby reducing the diameter at the end of the metal tube 7. After the tube shrinking process is completed, cylinder 502 can be retracted. After cylinder 502 is retracted, the feeding bracket 505 will move the metal tube 7 to above the discharge port 507. After the metal tube 7 moves above the discharge port 507, cylinder 502 can be controlled to continue shrinking. After cylinder 502 continues to shrink, the rotating sleeve 606 will enter the sliding sleeve 603. As cylinder 502 shrinks, the sliding support 605 on the rotating sleeve 606 will slide along the rotating groove 604, thereby forcing the rotating sleeve 606 to rotate. After the rotating sleeve 606 rotates, it will drive the feeding bracket 505 to flip over, thereby guiding the metal tube 7 on the feeding bracket 505 into the discharge port 507, realizing automatic unloading.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A tube shrinking machine with a protective device, comprising a tube shrinking machine body (1), wherein the tube shrinking machine body (1) is provided with a tube shrinking mold (2), characterized in that: The shrinking mold (2) is fitted with a protective shell (3). The protective shell (3) has an inlet and outlet (4) on one side. The inlet and outlet (4) is provided with a feeding mechanism (5). The feeding mechanism (5) includes a mechanism frame (501) fixedly installed on the protective shell (3). A cylinder (502) is fixedly installed at one end of the mechanism frame (501). The output end of the cylinder (502) is rotatably connected to a feeding bracket (505). A discharge port (507) is provided below the feeding bracket (505). A flipping mechanism (6) is provided between the feeding bracket (505) and the mechanism frame (501).
2. The tube shrinking machine with a protective device according to claim 1, characterized in that: A rotating connecting sleeve (503) is fixedly installed on the feeding bracket (505). A damping plate (504) is provided inside the rotating connecting sleeve (503). A metal tube (7) is provided inside the feeding bracket (505). An installation notch (506) is opened at the bottom of the mechanism frame (501).
3. The tube shrinking machine with a protective device according to claim 2, characterized in that: The mechanism frame (501) has a mounting hole at one end, and the cylinder (502) is mounted at one end of the mechanism frame (501) through the mounting hole.
4. The tube shrinking machine with a protective device according to claim 3, characterized in that: The output end of the cylinder (502) is rotatably installed in the feeding bracket (505) through the rotating connecting sleeve (503), and the feeding bracket (505) is aligned with the inlet and outlet (4) on the protective shell (3). The inlet and outlet (4) of the feeding bracket (505) extend into the protective shell (3). The discharge port (507) is installed on the mechanism frame (501) through the installation notch (506). The feeding bracket (505) is movably installed below the discharge port (507) through the cylinder (502).
5. The tube shrinking machine with a protective device according to claim 4, characterized in that: The flipping mechanism (6) includes a sliding sleeve (603) fixedly installed on the mechanism frame (501) and a rotating sleeve (606) fixedly installed on the feeding bracket (505). A docking base (601) is fixedly installed on the sliding sleeve (603), and a docking screw hole (602) is provided on the docking base (601). A rotating groove (604) is provided on the inner wall of the sliding sleeve (603). A connecting screw (607) is fixedly installed at one end of the rotating sleeve (606), and a sliding support foot (605) is fixedly installed on the outer wall of the rotating sleeve (606).
6. The tube shrinking machine with a protective device according to claim 5, characterized in that: Bolts are provided in the docking screw hole (602), and the docking base (601) is fixedly installed on the mechanism frame (501) by bolts.
7. The tube shrinking machine with a protective device according to claim 6, characterized in that: The sliding sleeve (603) is mounted on the mechanism frame (501) via the docking base (601), and the rotating sleeve (606) is mounted on the feeding bracket (505) via the connecting screw (607). The sliding sleeve (603) and the rotating sleeve (606) are aligned front and back. The sliding support (605) is slidably mounted on the sliding sleeve (603) via the rotating groove (604).