A pipe fitting demolding and receiving mechanism
By using a soft rubber rod and a conveyor belt with a raised ridge design in the demolding and receiving mechanism of injection molded pipe fittings, combined with air blowing pipe cooling, the problems of impact and bumping and labor intensity during the demolding process of injection molded pipe fittings are solved, and the defect rate and labor intensity are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN CENTURY JINNIU PIPE FITTING TECH CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-31
AI Technical Summary
Existing injection molded pipe fittings are prone to scratches and defects due to impacts and bumps during demolding, and the manual labor intensity is high. Existing equipment cannot completely avoid the problems of defect rate and labor intensity.
A demolding and material receiving mechanism for pipe fittings was designed, including a horizontal conveyor and an inclined conveyor. The conveyor belt is equipped with soft rubber rods and protrusions. Combined with an air blowing pipe and a blower, the soft rubber rods provide buffering and shock absorption. The design of the soft rubber rods and the conveyor belt ensures smooth material dropping. The inclined conveyor provides convenient lifting, and the air blowing pipe provides cooling and shaping.
It effectively prevents scratches caused by impacts and bumps after demolding of injection molded pipe fittings, reduces defect rate, reduces workload, ensures smooth delivery and shaping of injection molded pipe fittings, and extends equipment service life.
Smart Images

Figure CN224576043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molded pipe fitting production technology, specifically a pipe fitting demolding and material receiving mechanism. Background Technology
[0002] Injection molded pipe fittings use hot-melt polymer materials as raw materials. The molding process involves injection molding through the closing of two horizontally moving molds, followed by demolding after cooling. Currently, there are no dedicated measures for receiving the material. Some companies directly use a collection frame placed under the moving mold to catch the injection molded pipe fittings, then manually replace the collection frame to remove them. This method is not only labor-intensive, but also problematic because the structural strength of the newly molded pipe fittings is not yet at its peak. During demolding and falling into the collection frame, they are prone to scratches and defects due to impacts.
[0003] Some companies directly install a belt conveyor under the moving mold. The demolded injection-molded pipes fall onto the conveyor for output, and are then manually transferred. Compared to collection boxes, this method avoids the pipes colliding and bumping each other when they fall to the same spot. The conveyor belt is less rigid than the pipes, making them less prone to scratches and dents. However, when the pipes fall onto the conveyor belt, they don't always land smoothly and stably. Sometimes they bounce after impacting the belt and then hit the conveyor frame or mold equipment frame. While this reduces the probability of scratches and defects from impacts, it doesn't completely eliminate them, resulting in a certain defect rate and waste. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a pipe fitting demolding and receiving mechanism, which solves the problem that the lack of a dedicated mechanism for demolding and receiving injection molded pipe fittings leads to scratches and defects caused by impacts and knocks during the demolding and unloading process.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A pipe fitting demolding and receiving mechanism includes a horizontal conveyor disposed below the mold and an inclined conveyor disposed at one end of the horizontal conveyor. The horizontal conveyor and the inclined conveyor each include a horizontal frame and an inclined frame. Rollers are installed at both ends inside the horizontal frame and the inclined frame. Conveyor belts are installed on the two sets of rollers inside the horizontal frame and the inclined frame.
[0007] The surface of the roller is provided with grooves at equal intervals along the axial direction, the inner side of the conveyor belt is provided with protrusions corresponding to the positions of the grooves, and the outer side of the conveyor belt is fixed with soft rubber rods vertically and evenly.
[0008] Air blowing pipes are installed on the inner side of both the horizontal frame and the inclined frame near the opposite end rollers, and both air blowing pipes are connected to the blower through connecting pipes.
[0009] Preferably, the inclined conveyor is inclined upward at the end opposite to the horizontal conveyor, and the height of the inclined conveyor at the end opposite to the horizontal conveyor is 55-100 cm.
[0010] Preferably, one of the two sets of rollers inside the horizontal frame and the inclined frame is an electric roller.
[0011] Preferably, the protruding rib and the conveyor belt are an integral structure.
[0012] Preferably, the soft rubber rod is a soft silicone rod.
[0013] Preferably, the air nozzles equidistantly arranged on the air tube are positioned opposite each other and tilted upwards, and their positions correspond to the area between two adjacent protrusions.
[0014] Preferably, ventilation slots are provided on the front and back sides of the horizontal frame and the inclined frame opposite to the air blowing pipe.
[0015] Preferably, the connecting pipe is equipped with a diverting three-way valve corresponding to the two air blowing pipes.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] (1) This utility model uses soft rubber rods evenly set on the conveyor belt of the horizontal conveyor to buffer and dampen the injection molded pipe parts that fall off the mold, so that they fall smoothly onto the conveyor belt and avoid secondary bouncing. This prevents the injection molded pipe parts from being impacted and scratched after demolding, thus achieving the effect of protecting the injection molded pipe parts and greatly reducing the defect rate.
[0018] (2) Since the mold blanking position is relatively low, the injection molded pipe can be lifted and transported by setting up an inclined conveyor, so that the workers can complete the transfer work without bending over, standing or sitting. The soft rubber rod on the conveyor belt of the inclined conveyor plays an anti-slip role, ensuring that the injection molded pipe is lifted smoothly and reducing the workload.
[0019] (3) After the injection molded pipe is demolded, the temperature is higher than the room temperature. The heat of the injection molded pipe in this utility model will be transferred to the soft rubber rod and the conveyor belt that are in contact with it. The reason why direct air blowing is not used on the injection molded pipe is to prevent the injection molded pipe from cooling down too quickly or the overall cooling from being uneven, which would lead to abnormal deformation of the structure. By setting convex ribs on the inside of the conveyor belt, not only is the tensile strength of the conveyor belt improved and its service life extended, but it can also form a guiding effect on the airflow. By blowing air into the inside of the conveyor belt through the air blowing pipe, the conveyor belt can be cooled directly and the soft rubber rod and injection molded pipe can be cooled indirectly, so that the injection molded pipe can be cooled and shaped during the conveying process, which meets the production requirements and brings convenience to the production. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure of the horizontal conveyor and the inclined conveyor of this utility model;
[0022] Figure 3 This is a side view of the horizontal conveyor and mold of this utility model;
[0023] Figure 4 This is a side view of the air blowing pipe and rotating roller of this utility model;
[0024] Figure 5 This is a side view of the roller of this utility model.
[0025] In the diagram: 1. Mold; 2. Horizontal conveyor; 201. Horizontal frame; 3. Inclined conveyor; 301. Inclined frame; 4. Rotary roller; 401. Groove; 5. Conveyor belt; 6. Air blowing pipe; 601. Air blowing nozzle; 7. Connecting pipe; 8. Blower; 9. Ventilation slot; 10. Diverting three-way valve; 11. Soft rubber rod; 12. Raised rib. Detailed Implementation
[0026] 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.
[0027] like Figure 1-5As shown, this utility model provides a technical solution: a pipe demolding and receiving mechanism, including a horizontal conveyor 2 disposed below the mold 1 and an inclined conveyor 3 disposed at one end of the horizontal conveyor 2. The horizontal conveyor 2 and the inclined conveyor 3 respectively include a horizontal frame 201 and an inclined frame 301. Ventilation slots 9 are provided on the front and back of the horizontal frame 201 and the inclined frame 301 opposite to the air blowing pipe 6. The inclined conveyor 3 is inclined upward at the end opposite to the horizontal conveyor 2, and the height of the inclined conveyor 3 opposite to the horizontal conveyor 2 is 55-100cm.
[0028] Both ends of the horizontal frame 201 and the inclined frame 301 are equipped with rotating rollers 4. One of the two sets of rotating rollers 4 inside the horizontal frame 201 and the inclined frame 301 is an electric roller. Conveyor belts 5 are installed on the two sets of rotating rollers 4 inside the horizontal frame 201 and the inclined frame 301.
[0029] The surface of the roller 4 is provided with grooves 401 at equal intervals along the axial direction. The inner side of the conveyor belt 5 is provided with protrusions 12 corresponding to the positions of the grooves 401. The protrusions 12 and the conveyor belt 5 are an integral structure. Soft rubber rods 11 are fixed vertically and evenly on the outer side of the conveyor belt 5. The soft rubber rods 11 are soft silicone rods.
[0030] Air blowing pipes 6 are installed on the inner side of the horizontal frame 201 and the inclined frame 301 near the opposite end roller 4. Air blowing nozzles 601 are equidistantly arranged on the air blowing pipes 6, facing away from each other and inclined upwards, and corresponding to the area between two adjacent protrusions 12. Both air blowing pipes 6 are connected to the blower 8 through connecting pipes 7. A diversion three-way valve 10 corresponding to the two air blowing pipes 6 is installed on the connecting pipe 7.
[0031] Working principle:
[0032] When the mold 1 separates and demolds, the injection-molded pipe falls downward onto the conveyor belt 5 of the horizontal conveyor 2. Soft rubber rods 11 are evenly distributed on the conveyor belt 5 to cushion and dampen the falling injection-molded pipe, ensuring a smooth drop and preventing secondary bouncing and impact. Since the mold 1 has a relatively low unloading position, the injection-molded pipe can be lifted and transported by an inclined conveyor 3. The soft rubber rods 11 on the conveyor belt 5 of the inclined conveyor 3 act as anti-slip rods, ensuring the injection-molded pipe is lifted smoothly. Air is supplied to the two air pipes 6 through the blower 8 and connecting pipe 7, blowing air into the inside of the conveyor belt 5, directly cooling the conveyor belt 5 and indirectly cooling the soft rubber rods 11 and the injection-molded pipe, thus ensuring the injection-molded pipe completes unloading, cooling, and transport smoothly.
Claims
1. A pipe de-molding and loading mechanism, characterized by: It includes a horizontal conveyor (2) set below the mold (1) and an inclined conveyor (3) set at one end of the horizontal conveyor (2). The horizontal conveyor (2) and the inclined conveyor (3) respectively include a horizontal frame (201) and an inclined frame (301). Rollers (4) are installed at both ends inside the horizontal frame (201) and the inclined frame (301). Conveyor belts (5) are installed on the two sets of rollers (4) inside the horizontal frame (201) and the inclined frame (301). The surface of the roller (4) is provided with grooves (401) at equal intervals along the axial direction. The inner side of the conveyor belt (5) is provided with protrusions (12) corresponding to the position of the grooves (401). The outer side of the conveyor belt (5) is vertically and uniformly fixed with soft rubber rods (11). Air blowing pipes (6) are installed on the inner side of the horizontal frame (201) and the inclined frame (301) near the opposite end roller (4), and both air blowing pipes (6) are connected to the blower (8) through connecting pipes (7).
2. A tube part stripping and feeding mechanism according to claim 1, characterized in that: The inclined conveyor (3) is inclined upward at one end away from the horizontal conveyor (2), and the height of the inclined conveyor (3) away from the horizontal conveyor (2) is 55-100 cm.
3. A tube part stripping and feeding mechanism according to claim 1, characterized in that: One of the two sets of rollers (4) inside the horizontal frame (201) and the inclined frame (301) is an electric roller.
4. A tube part stripping and feeding mechanism according to claim 1, characterized in that: The protruding rib (12) and the conveyor belt (5) are an integral structure.
5. A tube de-moulding and filling mechanism according to claim 1, characterized in that: The soft silicone rod (11) is a soft silicone rod.
6. A tube de-moulding and filling mechanism according to claim 1, characterized in that: The air nozzles (601) equidistantly arranged on the air pipe (6) are positioned opposite each other and tilted upwards, and correspond to the area between two adjacent protrusions (12).
7. A tube part stripping and feeding mechanism according to claim 1, characterized in that: Ventilation slots (9) are provided on the front and back sides of the horizontal frame (201) and the inclined frame (301) opposite to the air blowing pipe (6).
8. A tube part stripping and feeding mechanism according to claim 1, characterized in that: The connecting pipe (7) is equipped with a diversion three-way valve (10) corresponding to the two air blowing pipes (6).