A self-adsorbing forming drum

Abstract

The utility model discloses a kind of self-adsorption forming drums, including drum cylinder, drum cylinder is fixed on flange, and rotate under the driving of flange, the surface of drum cylinder is opened with the head adsorption hole for the head of rubber material adsorption, and the tail adsorption hole for the tail of rubber material adsorption, gas blowing hole is further provided on drum cylinder to facilitate blowing to realize rubber material unloading;By independently setting head adsorption hole and tail adsorption hole, the head and tail of rubber material can be reliably adsorbed respectively, and make it closely connected, effectively solve the problem that the head and tail of rubber material are not accurately positioned in conventional mode, prone to warping, significantly improve the bonding accuracy, in addition, special gas blowing hole is set to unload, can form uniform blowing air curtain, make rubber material stable, quickly from the surface of drum cylinder, avoid the damage or deformation of rubber material that may be caused by mechanical scraping, ensure product quality.

Description

Technical Field

[0001] This utility model relates to the field of air spring manufacturing technology, specifically to a self-adhesive forming drum. Background Technology

[0002] When molding the half-parts of an air spring, the rubber sheets are usually joined by relying on the adhesiveness of the rubber material. When the adhesiveness of the rubber material is poor, it is difficult for the first layer of rubber material to adhere to the molding drum. The joint bonding effect often affects the molding quality. In particular, almost all air spring molding machines now rely on people to achieve the joint bonding, making it difficult to automate the entire molding process.

[0003] Patent CN 222061280 U discloses a molding drum utilizing negative pressure. Through the arrangement of a first and second through-hole, the bonding drum can be adsorbed and inflated as needed. During bonding, only the first through-hole draws air in; during drum removal, all through-holes blow air out, thus allowing for better bonding and removal of the adhesive material. This prior art has only one row of adsorption holes, which can only adsorb the head of the adhesive material, not the tail. Furthermore, this hole acts as both a negative and positive pressure hole, making it easy for the bonded adhesive material to break during drum removal. Utility Model Content

[0004] To address the shortcomings of existing technologies, a self-adsorption forming drum is proposed, which solves the problem in the aforementioned background technology where there is only one row of adsorption holes, which can only adsorb the head of the adhesive material and is easily blown off when the drum is removed.

[0005] To achieve the above objectives, the present invention proposes the following technologies: A self-adsorption forming drum includes a drum cylinder, which is fixed on a flange and rotates under the drive of the flange. The surface of the drum cylinder is provided with a head adsorption hole for adsorbing the head of the rubber material and a tail adsorption hole for adsorbing the tail of the rubber material. The drum cylinder is also provided with an air blowing hole to facilitate air blowing to unload the rubber material.

[0006] Furthermore, the head adsorption holes and tail adsorption holes are evenly distributed along the axial direction of the drum, and the head adsorption holes and tail adsorption holes are arranged adjacent to each other to facilitate the connection of the rubber material head and tail.

[0007] Furthermore, an annular groove is formed on the surface of the drum, and the air blowing hole is formed in the annular groove. Several annular grooves are arranged along the length of the drum.

[0008] Furthermore, the drum is cylindrical in shape, and three first air passages are provided inside the side wall of the drum, which are respectively connected to the head adsorption hole, the tail adsorption hole and the blowing hole.

[0009] Furthermore, a second air passage is provided inside the flange to connect the external air pressure mechanism and the first air passage. The second air passage has three channels, each corresponding to one of the first air passages. A sealing structure is provided at the connection between the second air passage and the first air passage.

[0010] Furthermore, an end cap is provided at the end of the drum cylinder away from the flange, and the drum cylinder is detachably connected to the flange through a connecting assembly to achieve positioning and communication between the first air passage and the second air passage.

[0011] Furthermore, one side of the flange is provided with a protrusion for inserting a drum, and the end of the drum is provided with a positioning groove. The connecting assembly includes a flat key located in the positioning groove and connected to the protrusion.

[0012] Furthermore, the connecting assembly also includes connecting bolts for connecting the flange and the drum, wherein multiple connecting bolts are provided and evenly distributed along the circumference of the drum.

[0013] Furthermore, the flange is also provided with multiple connection holes for connecting the drive mechanism, which are evenly distributed along the circumference of the flange.

[0014] Compared with the prior art, the comprehensive effects brought about by this utility model include: With independently designed head and tail adsorption holes, the head and tail of the adhesive material can be reliably adsorbed and tightly connected, effectively solving the problems of inaccurate head and tail positioning and easy lifting of the adhesive material in traditional methods, and significantly improving the bonding accuracy. In addition, a special air blowing hole is set for material unloading, which can form a uniform blowing air curtain, allowing the adhesive material to be smoothly and quickly detached from the drum surface, avoiding the damage or deformation of the adhesive material that may be caused by mechanical scraping, and ensuring product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present utility model; Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the present invention in conjunction with the adhesive.

[0016] Legend: 1. Drum; 2. Flange; 3. Head suction hole; 4. Tail suction hole; 5. Air blowing hole; 6. Rubber material; 7. Annular groove; 8. First air passage; 9. Second air passage; 10. End cap; 11. Protrusion; 12. Positioning groove; 13. Flat key; 14. Connecting hole. Detailed Implementation

[0017] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In this document, terms such as “up,” “down,” “left,” “right,” and “top” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figures 1 to 4 As shown, a self-adsorption forming drum includes a drum cylinder 1, which is fixed on a flange 2 and rotates under the drive of the flange 2. The surface of the drum cylinder 1 is provided with a head adsorption hole 3 for adsorbing the head of the rubber material 6 and a tail adsorption hole 4 for adsorbing the tail of the rubber material 6. The drum cylinder 1 is also provided with an air blowing hole 5 to facilitate air blowing to unload the rubber material 6.

[0020] With independently designed head adsorption hole 3 and tail adsorption hole 4, the head and tail of the adhesive material 6 can be reliably adsorbed and tightly connected, effectively solving the problems of inaccurate head and tail positioning and easy lifting of the adhesive material 6 in the traditional method, and significantly improving the bonding accuracy. In addition, a special air blowing hole 5 is set for material unloading, which can form a uniform blowing air curtain, so that the adhesive material 6 can be smoothly and quickly detached from the surface of the drum 2, avoiding damage or deformation of the adhesive material 6 that may be caused by mechanical scraping, and ensuring product quality.

[0021] The two sets of suction holes at the head and tail make the air spring film more effectively bonded to the drum 1, reducing the probability of bonding failure and the manual input of the adhesive 6 bonding, thus facilitating the automation of the molding process.

[0022] In the self-adsorption forming drum of this embodiment, the head adsorption hole 3 and the tail adsorption hole 4 are evenly distributed along the axial direction of the drum cylinder 1, and the head adsorption hole 3 and the tail adsorption hole 4 are arranged adjacent to each other so that the rubber material 6 can be connected head to tail.

[0023] Specifically, the head adsorption hole 3 and the tail adsorption hole 4 are evenly distributed in two rows along the axial direction of the drum 1, and these two rows of holes are arranged adjacent to each other, so that after the adhesive 6 is adsorbed onto the surface of the drum 1, its head and tail can be tightly connected to form a complete ring, ensuring the accuracy of subsequent processes.

[0024] In the self-adsorption forming drum of this embodiment, an annular groove 7 is provided on the surface of the drum cylinder 1, and the air blowing hole 5 is provided in the annular groove 7. Several annular grooves 7 are provided along the length direction of the drum cylinder 1.

[0025] In order to smoothly remove the adhesive material 6 after the bonding and molding are completed, an air blowing hole 5 is opened to blow the adhesive material 6 to separate it from the drum 1.

[0026] To optimize the blowing effect and prevent gas leakage, this embodiment has multiple annular grooves 7 on the surface of the drum 1, and blowing holes 5 are opened at the same position at the bottom of the annular grooves 7, distributed in a straight line. The distribution angle of the blowing holes 5 is 90 degrees different from that of the other two rows of adsorption holes. Thus, when unloading is required, compressed gas can enter the annular grooves 7 through the blowing holes 5 to form a uniform air curtain, which pushes the rubber material 6 smoothly and quickly away from the surface of the drum 1, avoiding uneven local force that causes deformation of the rubber material and ensuring product quality.

[0027] In this embodiment of the self-adsorption forming drum, the drum cylinder 1 is cylindrical in shape, and three first air passages 8 are provided in the side wall of the drum cylinder 1, which are respectively connected to the head adsorption hole 3, the tail adsorption hole 4 and the blowing hole 5.

[0028] A cylindrical drum 1 is provided to support the rubber material 6 while reducing the overall weight of the drum 6. Furthermore, in order to achieve independent control of the head adsorption hole 3, tail adsorption hole 4 and blowing hole 5, this application designs a precise built-in air channel system: independent first air channels 8 are set up and connected to each functional hole, which facilitates independent control of the positive and negative pressure of each first air channel 8 to adsorb or blow up the rubber material 6, thereby improving molding efficiency.

[0029] In the self-adsorption forming drum of this embodiment, a second air passage 9 is provided in the flange 2 to connect the external air pressure mechanism and the first air passage 8. The second air passage 9 is provided in three places and corresponds one-to-one with the first air passage 8. A sealing structure is provided at the connection between the second air passage 9 and the first air passage 8.

[0030] The system employs independent internal air duct systems to control the head adsorption, tail adsorption, and air blowing unloading functions. Each air duct does not interfere with the others, ensuring timely action response, high control precision, and strong reliability.

[0031] The built-in air passage system also includes a second air passage 9 located inside the flange 2, which is used to connect an external vacuum generator and a positive pressure air source (not shown in the figure). These three second air passages 9 correspond one-to-one with the three first air passages 8 on the drum 1, thereby providing positive or negative pressure to the head adsorption hole 3, the tail adsorption hole 4, and the blowing hole 5, respectively, to achieve blowing or adsorption.

[0032] Corresponding to the second air passage 9, two vacuum generating holes corresponding to the two rows of adsorption holes and an air inlet corresponding to the air outlet are respectively provided on the circumferential side of the flange 2.

[0033] A sealing structure (not shown in detail in the figure, but an O-ring can be used) is provided at the connection between the drum 1 and the flange 2 to ensure the airtightness of the first air passage 8 and the second air passage 9 after docking, prevent crosstalk between the air passages, avoid air leakage, and ensure the reliability of the adsorption and blowing action.

[0034] With the above structure, the entire air duct system is integrated inside the drum 1 and flange 2, which is compact and avoids interference and safety hazards that may occur when external pipelines rotate at high speed, thus ensuring the stability and safety of the forming drum under high-speed operation.

[0035] In the self-adsorption forming drum of this embodiment, an end cap 10 is provided at the end of the drum cylinder 1 away from the flange 2. The drum cylinder 1 is detachably connected to the flange 2 through a connecting assembly to realize the positioning and communication between the first air passage 8 and the second air passage 9.

[0036] Specifically, the self-adhesive forming drum of this application mainly includes a drum cylinder 1, a flange 2, and an end cap 10. The drum cylinder 1 is cylindrical, with one end detachably fixed to the flange 2 via a connecting assembly, and the other end closed by the end cap 10. The flange 2 is used to connect an external drive mechanism (not shown in the figure), which can drive the flange 2 and the drum cylinder 1 fixed thereto to rotate together. Specifically, the flange 2 has multiple connecting holes 14, which are evenly distributed along the circumference of the flange 2 to reliably connect to the drive mechanism via bolts or other fasteners.

[0037] In the self-adsorption forming drum of this embodiment, a protrusion 11 for inserting the drum cylinder 1 is provided on one side of the flange 2, and a positioning groove 12 is provided at the end of the drum cylinder 1. The connecting assembly includes a flat key 13 located in the positioning groove 12 and connected to the protrusion 11.

[0038] A protrusion 11 is provided for insertion into the end of the drum 1 to achieve initial positioning. To achieve precise circumferential positioning and ensure accurate alignment of the first air passage 8 and the second air passage 9, a positioning groove 12 is provided at the end of the drum 1. A flat key 13, which is installed in the positioning groove 12 and cooperates with the protrusion 11 of the flange 2, can prevent relative rotation between the drum 1 and the flange 2, so that the second air passage 9 and the first air passage 8 are precisely aligned and cooperated.

[0039] The drum 1 and flange 2 are connected in a detachable manner and are circumferentially positioned by a flat key 13. This not only ensures the accuracy of the air circuit connection, but also allows the drum 1 to be quickly replaced as an independent module. This greatly facilitates the maintenance and cleaning of the equipment and adapts to the production needs of different product specifications, thereby improving the utilization rate of the equipment.

[0040] In this embodiment of the self-adsorption forming drum, the connecting assembly further includes connecting bolts for connecting the flange 2 and the drum cylinder 1. The connecting bolts are provided in multiple quantities and are evenly distributed along the circumferential direction of the drum cylinder 1.

[0041] The connecting bolts are evenly distributed along the circumference of the drum 1. After passing through the flange 2, the connecting bolts are inserted into the side wall of the drum 1, firmly securing the drum 1 to the flange 2. This detachable connection structure facilitates the replacement, maintenance, or cleaning of the drum 1, greatly improving the applicability and maintenance convenience of the equipment.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-adhesive forming drum, characterized in that, The device includes a drum, which is fixed to a flange and rotates under the drive of the flange. The surface of the drum is provided with a head adsorption hole for adsorbing the head of the rubber material and a tail adsorption hole for adsorbing the tail of the rubber material. The drum is also provided with an air blowing hole to facilitate air blowing to unload the rubber material.

2. The self-adhesive forming drum according to claim 1, characterized in that, The head adsorption holes and tail adsorption holes are evenly distributed along the axial direction of the drum, and the head adsorption holes and tail adsorption holes are arranged adjacent to each other to facilitate the connection of the rubber material head and tail.

3. The self-adhesive forming drum according to claim 1, characterized in that, The surface of the drum is provided with an annular groove, and the air blowing hole is provided in the annular groove. There are several annular grooves along the length of the drum.

4. The self-adhesive forming drum according to claim 1, characterized in that, The drum is cylindrical in shape, and three first air passages are provided inside the side wall of the drum, which are respectively connected to the head adsorption hole, the tail adsorption hole and the blowing hole.

5. A self-adhesive forming drum according to claim 4, characterized in that, The flange has a second air passage to connect the external air pressure mechanism and the first air passage. The second air passage has three channels, each corresponding to one of the first air passages. A sealing structure is provided at the connection between the second air passage and the first air passage.

6. The self-adhesive forming drum according to claim 5, characterized in that, The drum cylinder is provided with an end cap at the end away from the flange. The drum cylinder is detachably connected to the flange through a connecting assembly to achieve positioning and communication between the first air passage and the second air passage.

7. A self-adhesive forming drum according to claim 6, characterized in that, The flange has a protrusion on one side for inserting a drum, and the drum has a positioning groove at its end. The connecting assembly includes a flat key located in the positioning groove and connected to the protrusion.

8. A self-adhesive forming drum according to claim 7, characterized in that, The connecting assembly also includes connecting bolts for connecting the flange and the drum, wherein multiple connecting bolts are provided and evenly distributed along the circumference of the drum.

9. A self-adhesive forming drum according to claim 8, characterized in that, The flange is also provided with multiple connection holes for connecting the drive mechanism, which are evenly distributed along the circumference of the flange.

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