Rubber sealing strip flaring device

Abstract

The utility model relates to the technical field of sealing strip production equipment, in particular to a rubber sealing strip flaring device which is used for flaring a rubber sealing strip by adopting a flaring die. The guiding flaring block on the inner wall of the flaring channel can be clamped into an opening of the rubber sealing strip, flaring work of the rubber sealing strip can be carried out along with the penetrating action of the rubber sealing strip, secondary flaring can be achieved through the design that the movable jacking mechanism is matched with the limiting pressing wheel, the flaring quality is guaranteed, and the flaring efficiency is improved. And meanwhile, through the design of the movable jacking and pressing mechanism and the limiting pressing wheel, the action of the rubber sealing strip in the flaring action can be limited to a certain extent, and the flaring quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing strip production equipment, in particular to a rubber sealing strip expanding device. Background Art

[0002] After the rubber sealing strip is hot-pressed into shape through a mold, its structure is relatively regular. However, during use, the slots on the rubber sealing strip often need to be pre-opened so that workers or equipment can later clamp the rubber sealing strip on the corresponding installation structure to improve installation efficiency.

[0003] At present, the traditional flaring method is to manually insert a flaring tool into the slot of the rubber sealing strip and use the flaring tool to pre-expand along the length of the slot. The entire flaring operation is labor-intensive and has relatively low work efficiency. In response to this situation, the industry has also designed some commonly used flaring tools, such as patent CN112475046A - a double-station flaring die. The main design source of the flaring equipment of the rubber sealing strip is the design of tube expansion, which adopts the expansion method of through-center expansion. This flaring method will cause the entire rubber sealing strip to expand outward as a whole. In the actual expansion process, only the end of the rubber sealing strip slot needs to be expanded. Therefore, this design is not suitable for flaring the slot along the length of the rubber sealing strip. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model provides a rubber sealing strip expansion device, comprising:

[0005] frame;

[0006] A flaring die is provided on the frame, the flaring die is provided with a flaring channel for accommodating the passage of the rubber sealing strip, and the flaring channel is provided with at least one guide flaring block for being inserted into the opening of the rubber sealing strip;

[0007] A limiting pressure wheel is rotatably mounted on a corresponding area of the frame located at the discharge end of the expansion die;

[0008] A movable pressing mechanism is installed on the frame in a corresponding area at the discharge end of the expansion mold. The output end of the movable pressing mechanism can be inserted into the opening of the rubber sealing strip and press the back of the rubber sealing strip against the limiting pressure wheel.

[0009] In some possible embodiments, the movable pressing mechanism includes a mounting seat, a telescoping device arranged on the mounting seat, and a pressing wheel rotatably mounted on the output end of the telescoping device. The mounting seat is installed on the frame, and the telescoping device can drive the pressing wheel to be clamped into the opening of the rubber sealing strip.

[0010] In some possible embodiments, a mounting plate is provided on the output end of the retractor, and the rotating shaft of the pressing wheel is rotatably mounted on the mounting plate.

[0011] In some possible embodiments, at least one wedge-shaped block is provided on the output end of the retractor, and the mounting plate is mounted on the outermost wedge-shaped block.

[0012] In some possible embodiments, the flaring mold includes an upper mold and a lower mold, the lower mold is installed on the frame, and the upper mold is installed on the lower mold. A groove body is provided on the side where the upper mold and the lower mold are in contact with each other, and the groove bodies on the upper mold and the lower mold are buckled together to form the flaring channel, and the guide flaring block is provided in the groove body of the lower mold.

[0013] In some possible embodiments, the expansion channel is provided with a bell mouth at one end where the material is fed.

[0014] In some possible embodiments, one end of the upper mold discharging material bypasses the limiting pressure wheel and forms a limiting portion, a limiting block is fastened under the limiting portion, and a discharging limiting channel is formed between the limiting block and the limiting portion.

[0015] In some possible embodiments, an annular pressing groove is provided on the outer periphery of the limiting pressing wheel, a convex ring is provided on the annular pressing groove, and the convex ring and the guide flaring block are located on the same vertical plane.

[0016] In some possible embodiments, the frame includes a base plate and two parallel vertical plates, the two vertical plates are mounted on the base plate, the vertical plates are connected by connecting columns, the two ends of the rotating shaft of the limiting pressure wheel are rotatably mounted on the two vertical plates, the two sides of the expansion mold are respectively connected to the opposite sides of the two vertical plates, and the movable pressing mechanism is arranged on the inner side of any one of the vertical plates.

[0017] Compared with the existing technology, the beneficial effect of the present invention is that the rubber sealing strip expanding device of the present invention adopts an expanding mold to expand the rubber sealing strip. When the rubber sealing strip passes through the expanding channel, the guide expanding block on the inner wall of the expanding channel can be inserted into the opening of the rubber sealing strip. The expanding work of the rubber sealing strip will be carried out together with the movement of the rubber sealing strip. The movable pressing mechanism cooperates with the design of the limiting pressure wheel to realize secondary expanding, thereby ensuring the quality of expanding. At the same time, the design of the movable pressing mechanism and the limiting pressure wheel can limit the movement of the rubber sealing strip during the expanding action to a certain extent, thereby ensuring the quality of expanding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the structure of the rubber sealing strip expansion device provided in the embodiment of the utility model Figure 1 ;

[0020] Figure 2 Schematic diagram of the structure of the rubber sealing strip expansion device provided in the embodiment of the utility model Figure 2 ;

[0021] Figure 3 A partial exploded view of the rubber sealing strip expansion device provided in an embodiment of the present utility model.

[0022] Figure numerals: frame 10, base plate 11, vertical plate 12, connecting column 13, flaring mold 20, flaring channel 21, guide flaring block 22, upper mold 23, lower mold 24, limiting portion 25, limiting pressure wheel 30, ring pressure groove 31, convex ring 32, movable pressing mechanism 40, mounting seat 41, telescoping device 42, pressing wheel 43, wedge block 44, mounting plate 45. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the following, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] Reference Figures 1 to 3The rubber sealing strip expanding device shown includes a frame 10, a expanding mold 20, a limiting pressure wheel 30 and a movable pressing mechanism 40; the expanding mold 20 is arranged on the frame 10, and the expanding mold 20 is provided with a expanding channel 21 for accommodating the passage of the rubber sealing strip, and the expanding channel 21 is provided with at least one guide expanding block 22 for being inserted into the opening of the rubber sealing strip; the limiting pressure wheel 30 can be rotatably mounted on the corresponding area of the frame 10 at the discharge end of the expanding mold 20; the movable pressing mechanism 40 is mounted on the corresponding area of the frame 10 at the discharge end of the expanding mold 20, and the output end of the movable pressing mechanism 40 can be inserted into the opening of the rubber sealing strip and press the back of the rubber sealing strip against the limiting pressure wheel 30.

[0025] The active pressing mechanism 40 and the limiting pressure wheel 30 cooperate primarily to achieve secondary flaring, while the guide flaring block 22 merely pre-engages and props the opening open. However, due to the rubber sealing strip's inherent plasticity and flexibility, the opening on one side will rebound. In actual use, the active pressing mechanism 40 can be a guide block or a guide wheel, while the limiting pressure wheel 30's primary purpose is to reduce friction on the rubber sealing strip and limit its cross-sectional movement during the secondary flaring process.

[0026] The rubber sealing strip expanding device adopts an expanding mold 20 to expand the rubber sealing strip. When the rubber sealing strip passes through the expanding channel 21, the guide expanding block 22 on the inner wall of the expanding channel 21 can be inserted into the opening of the rubber sealing strip. The expanding work of the rubber sealing strip will be carried out together with the movement of the rubber sealing strip. The movable pressing mechanism 40 cooperates with the design of the limiting pressing wheel 30 to achieve secondary expanding, thereby ensuring the quality of expanding. At the same time, the design of the movable pressing mechanism 40 and the limiting pressing wheel 30 can limit the movement of the rubber sealing strip during the expanding action to a certain extent, thereby ensuring the quality of expanding.

[0027] Reference Figures 1 to 3 As shown, to facilitate the installation of the aforementioned components, the frame 10 includes a base plate 11 and two parallel vertical plates 12. The two vertical plates 12 are mounted on the base plate 11 and connected by a connecting column 13. The two ends of the rotation axis of the pressure wheel 30 are rotatably mounted on the two vertical plates 12. The two sides of the flaring die 20 are respectively connected to the opposite sides of the two vertical plates 12. The movable pressing mechanism 40 is disposed on the inner side of any one of the vertical plates 12. The above design facilitates the assembly and disassembly of the movable pressing mechanism 40 and the flaring die 20.

[0028] In some possible embodiments, to achieve smooth flaring and to open the opening of a closed or nearly closed rubber sealing strip, the flaring die 20 includes an upper die 23 and a lower die 24. The lower die 24 is mounted on the frame 10, and the upper die 23 is mounted on the lower die 24. A groove is provided on the side where the upper and lower dies 23 and 24 abut each other. The grooves on the upper and lower dies 23 and 24 engage with each other to form a flaring channel 21. A guide flaring block 22 is disposed within the groove of the lower die 24. The diameter or cross-sectional area of the flaring channel 21 is slightly larger than the diameter or cross-sectional area of the rubber sealing strip, and the cross-sectional area of the flaring channel 21 is proportional to the cross-sectional area of the rubber sealing strip to accommodate the expansion of the opening of the rubber sealing strip.

[0029] In the above embodiment, the guide expansion block 22 is not parallel to the length of the trough body, but is arranged at a certain angle to gradually expand the opening of the rubber sealing strip. Furthermore, the guide expansion block 22 is wedge-shaped at the feed end, which facilitates insertion into the opening of the rubber sealing strip.

[0030] It should be noted that, in some embodiments, in order to facilitate the insertion of the rubber sealing strip, the expansion channel 21 is provided with a bell mouth at one end where the material is fed.

[0031] In some possible embodiments, after the rubber sealing strip expands from the cooperation of the limiting pressure wheel 30 and the movable top pressing mechanism 40, in order to limit its movement, one end of the upper mold 23 for discharging the material bypasses the limiting pressure wheel 30 and forms a limiting portion 25, and a limiting block 26 is buckled under the limiting portion 25, forming a discharge limiting channel between the limiting block 26 and the limiting portion 25.

[0032] In some possible embodiments, in order to better limit and expand the rubber sealing strip, a ring pressure groove 31 is provided on the outer periphery of the limiting pressure wheel 30, and a convex ring 32 is provided on the ring pressure groove 31. The convex ring 32 and the guide expansion block 22 are on the same vertical plane.

[0033] In order to facilitate secondary flaring and insertion into the rubber sealing strip, in the present application, the movable pressing mechanism 40 includes a mounting seat 41, a telescoping device 42 provided on the mounting seat 41, and a pressing wheel 43 rotatably mounted on the output end of the telescoping device 42. The mounting seat 41 is mounted on the frame 10, and the telescoping device 42 can drive the pressing wheel 43 to be inserted into the opening of the rubber sealing strip. The telescoping device 42 can adopt the structure of a telescopic electric cylinder or a telescopic air cylinder, and its main purpose is to adapt to the flaring requirements of different depths. It should also be noted that chamfers are provided on both sides of the circumferential side walls of the pressing wheel 43. Such a design allows the pressing wheel 43 to produce flaring operations of different openings on the rubber sealing strip according to different insertion depths, adapting to different opening requirements.

[0034] In some possible embodiments, in order to facilitate the installation of the top pressure wheel 43, a mounting plate 45 is provided on the output end of the telescoping device 42, and the rotating shaft of the top pressure wheel 43 can be rotatably mounted on the mounting plate 45, wherein the rotating shaft is mounted on the mounting plate 45 through a bearing.

[0035] In some possible embodiments, because the opening of the rubber sealing strip is at a certain angle and not vertical, at least one wedge block 44 is provided at the output end of the expander 42, and the mounting plate 45 is mounted on the outermost wedge block 44. Therefore, in actual use, the number of wedge blocks 44 can be adjusted according to different tilt opening angle requirements to improve ease of use.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention shall be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A rubber sealing strip expansion device, characterized in that: include: frame; A flaring die is provided on the frame, the flaring die is provided with a flaring channel for accommodating the passage of the rubber sealing strip, and the flaring channel is provided with at least one guide flaring block for being inserted into the opening of the rubber sealing strip; A limiting pressure wheel is rotatably mounted on a corresponding area of the frame located at the discharge end of the expansion die; A movable pressing mechanism is installed on the frame in a corresponding area at the discharge end of the expansion mold. The output end of the movable pressing mechanism can be inserted into the opening of the rubber sealing strip and press the back of the rubber sealing strip against the limiting pressure wheel.

2. A rubber sealing strip expansion device according to claim 1, characterized in that: The movable pressing mechanism includes a mounting seat, a telescoping device arranged on the mounting seat, and a pressing wheel rotatably mounted on the output end of the telescoping device. The mounting seat is installed on the frame, and the telescoping device can drive the pressing wheel to be clamped into the opening of the rubber sealing strip.

3. A rubber sealing strip expansion device according to claim 2, characterized in that: A mounting plate is provided on the output end of the retractor, and the rotating shaft of the pressing wheel is rotatably mounted on the mounting plate.

4. A rubber sealing strip expansion device according to claim 3, characterized in that: At least one wedge-shaped block is provided on the output end of the retractor, and the mounting plate is mounted on the outermost wedge-shaped block.

5. The rubber sealing strip expansion device according to claim 1, characterized in that: The flaring mold includes an upper mold and a lower mold, the lower mold is installed on the frame, and the upper mold is installed on the lower mold. A groove body is provided on the side where the upper mold and the lower mold are in contact with each other. The groove bodies on the upper mold and the lower mold are buckled together to form the flaring channel, and the guide flaring block is provided in the groove body of the lower mold.

6. A rubber sealing strip expansion device according to claim 5, characterized in that: The expansion channel is provided with a bell mouth at one end where the material is fed.

7. The rubber sealing strip expansion device according to claim 5, characterized in that: One end of the upper die discharging material passes around the limiting pressure wheel and forms a limiting portion, a limiting block is buckled under the limiting portion, and a discharging limiting channel is formed between the limiting block and the limiting portion.

8. The rubber sealing strip expanding device according to claim 1, characterized in that: An annular pressing groove is provided on the outer periphery of the limiting pressing wheel, a convex ring is provided on the annular pressing groove, and the convex ring and the guide flaring block are located on the same vertical plane.

9. The rubber sealing strip expansion device according to claim 1, characterized in that: The frame includes a base plate and two parallel vertical plates, the two vertical plates are mounted on the base plate, the vertical plates are connected by connecting columns, the two ends of the rotating shaft of the limiting pressure wheel are rotatably mounted on the two vertical plates, the two sides of the expanding mold are respectively connected to the opposite sides of the two vertical plates, and the movable pressing mechanism is arranged on the inner side of any one of the vertical plates.

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