Special-shaped flat mouth structure rubber tube mold

Abstract

The utility model relates to the technical field of rubber tube moulds, in particular to a special-shaped flat mouth structure rubber tube mould which comprises a mould core, a connector is arranged on one side of the mould core in an attached mode, one side of the mould core and one side of the connector are both of a cylindrical structure, and the outer diameter of the mould core is the same as the outer diameter of a cylindrical area of the connector. A die head is arranged at the end, away from the die core, of the connector. According to the scheme, through the unique design of the first transition curved surface, smooth transition of the rubber tube from a round port to a square port is achieved, stress concentration and material damage in the tube blank deformation process are effectively avoided, and the process that the rubber tube is led into the rectangular channel is further optimized through cooperation of the conical channel and the second transition curved surface; and it is ensured that the deformed pipe blank can quickly and accurately enter the shaping stage, the mold core and the connector are assembled more conveniently through the insertion rod and the insertion groove which are in threaded connection, a user can flexibly switch the mold heads according to the production requirement, and the production efficiency and the mold universality are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of hose mold technology, and in particular to a hose mold with an irregular flat opening structure. Background Technology

[0002] A hose forming mold is a type of mold used to manufacture hoses. It typically consists of several parts, including the mold body, mold cover, and mold core. During manufacturing, rubber material is placed into the mold, and through processes such as heating and pressurization, the material is molded within the mold to ultimately form the desired hose shape. The selection and design of the hose forming mold have a significant impact on the quality and production efficiency of the hoses.

[0003] Currently, during the loading process, some through holes cannot be made into circles. When matching and connecting hose harnesses, square hoses need to be embedded. Since the hose ends are irregular, they cannot be shaped into rectangles during extrusion and vulcanization. Therefore, a shaping mold structure needs to be designed so that the hose ends can be limited and positioned during vulcanization. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a non-standard flat-mouth structure rubber tube mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a mold for a non-standard flat-mouth rubber hose, including a mold core, a connector is attached to one side of the mold core, both the mold core and the connector are cylindrical, the outer diameter of the mold core is the same as the outer diameter of the cylindrical area of ​​the connector, and a mold head is provided at the end of the connector away from the mold core;

[0007] The mold head and the connector are an integral structure. The mold head is square and its width is not less than the diameter of the connector. A shaping head is provided on the outside of the mold head. The shaping head has a rectangular channel and a conical channel. The conical channel is located close to the connector. The rectangular channel runs through the mold head, and a gap is left between the inner wall of the rectangular channel and the mold head for the passage of the rubber tube.

[0008] The mold core has a slot at one end near the connector, and a rod is welded and fixed at one end of the connector near the mold core. The surface of the rod is inserted into the slot.

[0009] In detail, the four square faces of the mold head and the circular end face of the connector head are all provided with a transition surface for hose connection.

[0010] In detail, the surface of the insertion rod is provided with external threads, and the inner wall of the slot is provided with internal threads, with the external threads and internal threads engaging with each other.

[0011] In detail, the inner wall of the tapered channel is provided with a transition surface II for the hose to pass through the rectangular channel.

[0012] In detail, a connecting plate is welded and fixed above the end of the shaping head away from the connecting head. A positioning sleeve is fixed through the surface of the connecting plate. A pin is slidably connected inside the positioning sleeve. A pull head is fixed at the upper end of the pin.

[0013] In detail, a spring is wound around the surface of the pin, and the spring is located between the pull head and the positioning sleeve. The two ends of the spring are fixedly assembled to the surface of the pull head and the end face of the positioning sleeve, respectively.

[0014] In detail, the surface of the mold head is provided with a positioning hole, and the end of the pin away from the pull head is slidably sleeved with the positioning hole.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. This solution achieves a smooth transition from a round to a square end of the hose through a unique transition surface design, effectively avoiding stress concentration and material damage during the tube blank deformation process. The combination of the tapered channel and the second transition surface further optimizes the process of introducing the hose into the rectangular channel, ensuring that the deformed tube blank can quickly and accurately enter the shaping stage. The threaded connection of the insert and slot makes the assembly of the mold core and the connector more convenient. Users can flexibly switch the mold head according to production needs, which significantly improves production efficiency and mold versatility.

[0017] 2. As described in point 1, the spring-assisted pin positioning mechanism (spring, pin, and positioning hole) allows for quick installation or removal of the shaping head by pulling the pull head with one hand, significantly simplifying the operation process. The spring's elastic return function ensures that the pin remains in a stable working state, preventing positional deviation during manual operation. Simultaneously, precise clearance control between the shaping head and the mold head ensures uniformity of the tube wall thickness, resulting in higher dimensional consistency of the finished product. Attached Figure Description

[0018] Figure 1 This is a disassembly diagram of the mold core, connector head, and positioning head of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the positioning head of this utility model;

[0021] Figure 4 This is a schematic diagram of the side structure of the positioning head of this utility model.

[0022] In the diagram: 1. Mold core; 11. Connector head; 12. Mold head; 13. Shaping head; 14. Rectangular channel; 15. Conical channel; 16. Insert rod; 17. Slot; 2. External thread; 21. Internal thread; 22. Connecting plate; 23. Positioning sleeve; 24. Pin; 25. Pull head; 26. Spring; 27. Positioning hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4 A mold for a non-standard flat-mouth hose includes a mold core 1, a connector 11 attached to one side of the mold core 1, both the mold core 1 and the connector 11 having a cylindrical structure on one side, the mold core 1 being used for fitting the tube blank, and the non-end area still mainly using circular tubes, the outer diameter of the mold core 1 being the same as the outer diameter of the cylindrical area of ​​the connector 11, and a mold head 12 being provided at the end of the connector 11 away from the mold core 1;

[0025] The mold head 12 and the connector head 11 are an integral structure. The mold head 12 has a square structure, and its width is not less than the diameter of the connector head 11. A shaping head 13 is provided on the outside of the mold head 12. The mold head 12 has a rectangular structure. After the tube blank passes through the connector head 11, it will be laterally opened by the wider mold head 12 to form a square end structure. By squeezing by hand, the end of the tube blank can be briefly pressed against the mold head 12. Then, the shaping head 13 is quickly covered over the mold head 12 and the outside of the tube blank. The part is used for auxiliary shaping. The shaping head 13 is provided with a rectangular channel 14 and a conical channel 15. The conical channel 15 is set close to the connecting head 11. The rectangular channel 14 is connected through the mold head 12. The inner wall of the rectangular channel 14 and the mold head 12 are left with a gap for the tube to pass through. The conical channel 15 plays a transitional introduction role, so that the mold head 12 with tube blank can enter the rectangular channel 14 better. The gap between the rectangular channel 14 and the mold head 12 meets the tube wall thickness of the tube blank.

[0026] A slot 17 is provided at one end of the mold core 1 near the connector 11. A rod 16 is welded and fixed at one end of the connector 11 near the mold core 1. The surface of the rod 16 is inserted into the inside of the slot 17. The insertion and docking of the rod 16 and the slot 17 facilitates the positioning of the connector 11 and the mold core 1.

[0027] It should be further explained that the four square faces of the mold head 12 and the circular end face of the connector head 11 are all provided with a transition surface for hose connection. The transition surface can provide a smooth transition when the tube blank is transported from the circular port of the connector head 11 to the mold head 12 to change to a square port.

[0028] It should be further explained that the surface of the insertion rod 16 is provided with external thread 2, and the inner wall of the slot 17 is provided with internal thread 21. The external thread 2 and the internal thread 21 are threaded together. Through the connection of the external thread 2 and the internal thread 21, the installation of the connector 11 and the mold core 1 can be facilitated. The mold head 12 can be installed and used depending on whether the square head of the hose is to be made.

[0029] It should be further explained that the inner wall of the tapered channel 15 is provided with a transition surface II for the rubber tube to pass through the rectangular channel 14. The transition surface II can be better introduced into the rectangular channel 14 for the shaping of the vulcanization process after the rubber tube is deformed by the mold head 12.

[0030] It should be further noted that a connecting plate 22 is welded and fixed above the end of the shaping head 13 away from the connecting head 11. A positioning sleeve 23 is fixed through the surface of the connecting plate 22. A pin 24 is slidably sleeved inside the positioning sleeve 23. A pull head 25 is fixed to the upper end of the pin 24. The pin 24 can be manually pulled by pulling the pull head 25, which is simple and quick.

[0031] It should be further noted that a spring 26 is wound around the surface of the pin 24. The spring 26 is located between the pull head 25 and the positioning sleeve 23. The two ends of the spring 26 are fixedly assembled with the surface of the pull head 25 and the end face of the positioning sleeve 23, respectively. The spring 26 can ensure the stable tension and reset of the pin 24.

[0032] It should be further explained that the surface of the mold head 12 is provided with a positioning hole 27, and the end of the pin 24 away from the pull head 25 is slidably sleeved with the positioning hole 27. By inserting and engaging the pin 24 with the positioning hole 27, the position can be fixed when the shaping head 13 covers the mold head 12 and presses and positions the end of the tube.

[0033] Working method: This solution achieves the initial connection of the tube blank through the cylindrical structure of the mold core 1 and the connector 11, ensuring that the non-end area remains in a circular tube shape. When the tube blank moves to the mold head 12, its square structure will laterally expand the tube blank to form a square port. The transition surface between the mold head 12 and the connector 11 ensures a smooth transition of the tube blank from a circle to a square shape, avoiding tube breakage or deformation due to abrupt shape changes. The conical channel 15 of the shaping head 13 further guides the deformed tube blank into the rectangular channel 14. The gap between its inner wall and the mold head 12 precisely matches the tube wall thickness, ensuring the stability of the tube shape during the vulcanization and shaping process.

[0034] The mold core 1 and the connector head 11 adopt a threaded connection design of insert rod 16 and slot 17 (external thread 2 and internal thread 21 are matched) to achieve quick disassembly and assembly. This modular structure allows users to choose whether to install mold head 12 according to their needs, flexibly adapting to different processing scenarios. The shaping head 13 is fixed by the insertion of pin 24 and positioning hole 27. Combined with the elastic reset function of spring 26, it ensures that the shaping head 13 is stable in position when pressing the rubber tube. The design of pull head 25 facilitates manual operation and improves assembly efficiency.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mold for a non-standard flat-mouth rubber hose, comprising a mold core (1), characterized in that: A connector (11) is attached to one side of the mold core (1). Both the mold core (1) and the connector (11) have a cylindrical structure on one side. The outer diameter of the mold core (1) is the same as the outer diameter of the cylindrical area of ​​the connector (11). A mold head (12) is provided at the end of the connector (11) away from the mold core (1). The mold head (12) and the connector (11) are an integral structure. The mold head (12) is a square structure. The width of the mold head (12) is not less than the diameter of the connector (11). A shaping head (13) is provided on the outside of the mold head (12). The shaping head (13) is provided with a rectangular channel (14) and a conical channel (15). The conical channel (15) is located close to the connector (11). The rectangular channel (14) and the mold head (12) are connected through each other. A gap is left between the inner wall of the rectangular channel (14) and the mold head (12) for the passage of the rubber tube. The mold core (1) has a slot (17) at one end near the connector (11), and a plug rod (16) is welded and fixed at one end of the connector (11) near the mold core (1). The surface of the plug rod (16) is inserted into the inside of the slot (17).

2. The mold for an irregularly shaped flat-mouthed hose according to claim 1, characterized in that: The square four sides of the mold head (12) and the circular end face of the connector head (11) are all provided with a transition surface for hose connection.

3. The mold for an irregularly shaped flat-mouthed hose according to claim 1, characterized in that: The surface of the insertion rod (16) is provided with an external thread (2), and the inner wall of the slot (17) is provided with an internal thread (21). The external thread (2) and the internal thread (21) are threaded together.

4. The mold for an irregularly shaped flat-mouthed hose according to claim 3, characterized in that: The inner wall of the tapered channel (15) is provided with a transition surface II for the hose to pass through the rectangular channel (14).

5. The mold for an irregularly shaped flat-mouthed hose according to claim 1, characterized in that: A connecting plate (22) is welded and fixed above the end of the shaping head (13) away from the connecting head (11). A positioning sleeve (23) is fixed through the surface of the connecting plate (22). A pin (24) is slidably sleeved inside the positioning sleeve (23). A pull head (25) is fixed at the upper end of the pin (24).

6. The mold for an irregularly shaped flat-mouthed hose according to claim 5, characterized in that: A spring (26) is wound around the surface of the pin (24). The spring (26) is located between the pull head (25) and the positioning sleeve (23). The two ends of the spring (26) are fixedly assembled with the surface of the pull head (25) and the end face of the positioning sleeve (23), respectively.

7. A mold for an irregularly shaped flat-mouthed hose according to claim 6, characterized in that: The mold head (12) has a positioning hole (27) on its surface, and the end of the pin (24) away from the pull head (25) is slidably sleeved with the positioning hole (27).

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