End cover for rubber cylinder and rubber cylinder

Abstract

The invention provides an end cover for a rubber cylinder and the rubber cylinder, the end cover comprises a hollow cylindrical main body part, and the inner wall of the end cover is provided with an annular first sealing part extending in the axial direction. The first sealing part is in contact with and abuts against contained parts of other components in the end cover to form a pre-sealing narrow band, and leakage of contents is blocked before the plastic bag is pressed. When the end cover is arranged on the glue barrel in a sleeving mode, sealing protection in the non-punctured state of the flexible glue containing bag is achieved, and the situation that glue leaks and pollutes the barrel body is avoided. Therefore, the rubber barrel can be repeatedly used, only the flexible rubber containing bag needs to be replaced, the consumable cost and resource waste are remarkably reduced, and economical efficiency and environment-friendly benefits are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of processing, in particular to an end cover for a glue cylinder and the glue cylinder. BACKGROUND

[0002] As an indispensable fluid control device in modern industry and civilian fields, the glue cylinder is widely used in building curtain wall sealing, automobile part bonding, electronic component packaging, and home decoration and repair, etc. Its main function is to realize the directional and quantitative delivery of high-viscosity glue, sealant and other materials. In the process of precision machining, the performance of the glue cylinder will directly affect the product yield and operation efficiency. With the deepening of the concepts of intelligent manufacturing and green production, the structural reliability, environmental adaptability and operation economy of the glue cylinder have also become key indicators to measure the performance of the equipment.

[0003] However, the current mainstream glue cylinder products generally adopt a disposable structure design that cannot be disassembled. This structure has some problems: first, in terms of environmental protection, the integrated design of the piston, end cover and push rod and other components leads to local wear and residue of the glue, which in turn causes the entire glue cylinder to be scrapped, and a large number of engineering plastic components cannot be recycled, causing environmental problems. Secondly, in terms of storage and transportation, the fixed geometric size and internal support structure of the rigid cylinder of the disposable glue cylinder seriously restrict the stacking density, resulting in a large number of voids during transportation, and high transportation costs. Finally, in terms of use cost, the need to frequently replace the glue cylinder increases the user's overall expenditure, especially in high-frequency operation scenarios, the consumable expenditure far exceeds the initial investment in equipment, and the process of replacing the equipment during operation significantly reduces the continuous operation efficiency.

[0004] In summary, there is currently no glue cylinder designed to address these problems. SUMMARY

[0005] In order to overcome the above technical defects, the purpose of the present application is to provide an end cover for a glue cylinder and the glue cylinder.

[0006] The present application discloses an end cover for a glue cylinder, the end cover comprising a main body.

[0007] The main body is in a cylindrical structure. The inner wall of the main body is provided with a first sealing portion, which is an annular structure and extends in a first direction to contact and abut against the contained part of other components at least partially arranged in the end cover, so that the contained part is sealed in the end cover.

[0008] The end cover is provided with a first sealing part in the form of an annular ring extending in the axial direction and forming a narrow sealing band by means of the inner wall of the cylindrical main body part. When the end cover is sleeved on other components (such as the barrel of a glue cartridge), pre-sealing can be achieved before the other components (such as a flexible glue-containing bag) disposed at least partially in the end cover are pressed, effectively preventing the contents (such as glue) from leaking in the un-pierced state. The repeated use of the glue cartridge is achieved, thereby greatly optimizing the economy and environmental protection of the glue cartridge.

[0009] Preferably, the end cover further comprises a cover part. The cover part is disposed on one side of the main body part and is fixedly connected with the main body part, so that the main body part and the cover part jointly form a cover-like structure, thereby being sleeved on other components. The cover part is further provided with an opening, so that the contents in the other components disposed at least partially in the end cover can flow out through the opening.

[0010] The opening of the cover part is designed to establish a directional channel for the contents to flow out, and provides a structural basis for other fine designs.

[0011] Preferably, the cover part is further provided with at least one piercing tooth. The piercing tooth is disposed on one side of the opening in the second direction to pierce the contained part. The second direction is perpendicular to the first direction. The tip of the piercing tooth is disposed towards the center of the main body.

[0012] By adding a piercing tooth on the side of the opening of the cover part and accurately positioning it in the second direction, when the flexible glue-containing bag is pressed by external force (for example, by a piston), the piercing tooth automatically penetrates the bag body to form a drainage port, eliminating the need for manual pre-piercing, improving assembly efficiency and avoiding the risk of human error, and preventing the risk of glue leakage and contamination of the glue cartridge caused by the flexible glue-containing bag being placed in the glue cartridge after being pierced. The design of the tip of the piercing tooth towards the center of the main body allows the piercing force to act on the central area of the bag body. This structure can accurately control the piercing depth, prevent irregular tearing of the bag body caused by tooth tip deviation, and ensure that the glue outlet shape is regular to match the subsequent sealing structure.

[0013] Preferably, the cover part is further provided with a second sealing part. The second sealing part is formed by recessing the cover part away from the main body part. The projection of the opening and the piercing tooth in the first direction coincides with the second sealing part.

[0014] The second sealing part formed by recessing the cover part makes the piercing tooth coincide with the opening in the projection area. An annular sealing area is formed around the bag body piercing hole at the moment of piercing, forcing the contents to flow out of the opening in one direction, and completely blocking the risk of glue backflow and contamination of the glue cartridge through the gap between the piercing teeth.

[0015] Preferably, the at least one piercing tooth comprises two piercing teeth. The two piercing teeth are parallel and spaced apart on the cover part.

[0016] Each piercing tooth extends to outside of the second sealing portion in the first direction and extends to inside of the first sealing portion.

[0017] Here or can be understood as: two piercing teeth are arranged in parallel, first: the two sides of the flexible glue bag are sealed by the metal ring, which will inevitably generate a wrinkle extending to the center of the circle in the circumferential direction. In the case of a larger flexible glue bag, the width and depth of the wrinkle will also deepen. If only a single piercing tooth is provided, it is possible that the piercing tooth will just pierce into the wrinkle, resulting in the inability to pierce the flexible glue bag body at one time, causing inconvenience in operation. Therefore, by providing two parallel piercing teeth, it can be ensured that the piercing teeth can open at least one hole on the flexible glue bag. Second: two parallel piercing teeth can open two openings on the flexible glue bag, so that the glue in the flexible glue bag can flow out of the opening pierced by the piercing tooth more smoothly.

[0018] Preferably, the cover portion is further provided with a glue guide groove, one end of the glue guide groove being in communication with the opening, and the other end being in communication with the second sealing portion, so that the contents of other components arranged in the second sealing portion can flow out of the opening through the glue guide groove.

[0019] The glue guide groove forms a directional flow channel in communication with the second sealing portion and the opening. After piercing, the contents are constrained in the sealing portion and guided to the opening through the glue guide groove to flow out, avoiding the disorderly diffusion of glue in the cover portion. This structure optimizes the path control of high-flowability glue and reduces residue.

[0020] Preferably, the main body portion is further provided with a containing groove, the containing groove being waist-shaped, oval or circular, the containing groove being arranged at the center of the cover portion, being recessed from the cover portion away from the main body portion, and forming an accommodation space.

[0021] By providing a waist-shaped groove, on the one hand, the two sides of the flexible glue bag are sealed by the metal ring, so the waist-shaped groove can just accommodate the sealing ring, thereby forming a plane at the position of the cover portion, which is beneficial to the flow of glue and the sealing property. Moreover, compared with a circular hole, the waist-shaped hole can be compatible with the assembly tolerance of the metal ring, overcoming the angle sensitivity of the circular hole and preventing the offset phenomenon caused by the displacement of the sealing ring during assembly.

[0022] Preferably, the first sealing portion is further provided with at least one sealing ring, the sealing ring being arranged on the inner surface of the first sealing portion. When the sealing ring is at least two, the sealing rings are arranged in sequence and spaced apart in the first direction.

[0023] Through the design, the first sealing part can further seal the flexible glue-containing bag through at least one sealing ring. When the at least one sealing ring is a plurality of sealing rings, a stepped sealing barrier can be formed. When the glue-containing bag is expanded under pressure, each sealing ring gradually blocks the glue, so that even if a single layer of sealing fails, there is still multiple redundant protections, and the anti-leakage capability during work is significantly improved.

[0024] Preferably, the main body part is further provided with a plurality of guide grooves extending in the first direction, and a plurality of limiting parts extending in the circumferential direction and protruding from the surface of the main body part.

[0025] The guide grooves and the limiting parts constitute a spatial positioning system: the axial guide grooves ensure the circumferential positioning accuracy of the glue cylinder, avoiding the influence of assembly deviation on the alignment of the piercing structure. The radial limiting parts limit the axial movement of the glue cylinder, maintain the constant compression amount of the sealing part, ensure the easy assembly of the end cap, accurate assembly, and stable use.

[0026] The second aspect of the application also provides a glue cylinder comprising a first assembly. The first assembly comprises an end cap, a cylinder body, and a piston as in any one of the preceding embodiments.

[0027] The cylinder body is a cylindrical structure extending in the first direction and open at both ends. The cylinder body further forms an accommodation space inside for accommodating a flexible glue-containing bag.

[0028] The end cap is sleeved on one side of the cylinder body.

[0029] The piston is arranged on the other side of the cylinder body and slides in the cylinder body in the first direction to extrude the flexible glue-containing bag, so that the contents in the flexible glue-containing bag flow out through the end cap.

[0030] By applying the aforementioned end cap and combining the bidirectional symmetric design of the glue cylinder, the bidirectional repeated use of the glue cylinder is innovatively realized: the symmetrical openings at both ends of the glue cylinder cooperate with the detachable end cap, so that after the piston completes extrusion in one direction, only the disposable flexible glue-containing bag inside needs to be replaced and the direction of the glue cylinder needs to be reversed to rework from the opposite direction. The multiple sealing structures of the end cap completely isolate the glue from the cylinder body, ensuring that the glue cylinder is not contaminated during long-term cyclic use. Through the mode of reusing core components and replacing only consumable bags, the use cost is greatly reduced, industrial waste is reduced, and the user's use economy and environmental protection are improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The end cap provided in the application is shown in the perspective structural schematic diagram; Figure 2 The end cap provided in the application is shown in the enlarged structural schematic diagram; Figure 3 The cylinder body of the glue cylinder provided in the application is shown in the perspective structural schematic diagram; Figure 4An enlarged structural schematic view of a barrel body of a glue cartridge provided in the present application; Figure 5 A perspective structural schematic view of a fixed part of a piston of a glue cartridge provided in the present application; Figure 6 Another perspective structural schematic view of a fixed part of a piston of a glue cartridge provided in the present application; Figure 7 A perspective structural schematic view of a clamping part of a piston of a glue cartridge provided in the present application.

[0032] Reference signs: 100, glue cartridge; 200, first assembly; 300, end cap; 1, main body part; 11, first sealing part; 111, sealing ring; 12, guide groove; 13, limiting part; 2, cover body part; 21, opening; 22, piercing tooth; 23, second sealing part; 24, glue guiding groove; 25, accommodating groove; 400, barrel body; 31, accommodating space; 32, guiding part; 33, limiting groove; 34, guide groove; 35, first end; 36, second end; 500, piston; 5, first part; 51, fixed part; 52, clamping part; 521, elastic sheet; 5211, guide part; 522, fixed ring; 53, first limiting rib; 54, first limiting groove; 600, second assembly; z, first direction; x, second direction. DETAILED DESCRIPTION

[0033] The advantages of the present application are further set forth in the detailed description below.

[0034] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers represent the same elements throughout the several figures. The implementations set forth in the following description do not represent all implementations consistent with the subject technology. Instead, they are merely examples of apparatuses and methods consistent with some aspects related to the described subject matter as recited by the claims set forth below.

[0035] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this disclosure and the appended claims, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and / or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0036] It should be understood that, although the terms first, second, third, etc. can be employed in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another type of information. For example, without departing from the scope of the present disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining" In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0037] In the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication between the two elements, it can be direct connection, or indirect connection through intermediate medium, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0038] In the subsequent description, the suffix such as "module", "component" or "unit" used to represent elements is only for the convenience of the description of the present application, and has no specific meaning in itself. Therefore, "module" and "component" can be used interchangeably.

[0039] Please refer to Figures 1-2 , Figure 1 The perspective structural schematic diagram of the end cover provided in the present application is shown in the following figure: Figure 2 The enlarged structural schematic diagram of the end cover provided in the present application is shown in the following figure:

[0040] As Figures 1-2 shown, the present application provides an end cover 300 for a rubber tube 100, the end cover 300 comprising a main body part 1.

[0041] The main body part 1 is in a cylindrical structure. The inner wall of the main body part 1 is provided with a first sealing part 11, which is an annular structure and extends along a first direction z to contact and abut against the contained part of other components at least partially arranged in the end cover 300, so that the contained part is sealed in the end cover 300. The first direction z described herein can be understood as the axial direction of the barrel 400.

[0042] The end cap 300 utilizes the inner wall of the cylindrical main body 1, equipped with an annular first sealing portion 11 extending axially to form a narrow sealing band. When fitted over another component (e.g., the barrel 400 of the rubber cartridge 100), it provides a pre-seal before other components (e.g., a flexible plastic bag) at least partially disposed within the end cap 300 are subjected to pressure, effectively preventing leakage of unpunctured contents (e.g., glue).

[0043] The above is an explanation of the basic concept of this application. The following will explain the possible specific implementation methods of each component in conjunction with the drawings.

[0044] First, regarding the main body 1 , the specific structure of the first sealing portion 11 is not limited.

[0045] like Figure 2 As shown, in a possible implementation, the first sealing portion 11 is further provided with at least one sealing ring 111, which is disposed on the inner surface of the first sealing portion 11. When there are at least two sealing rings 111, the sealing rings 111 are sequentially spaced along the first direction z.

[0046] This design allows the first sealing portion 11 to further seal the flexible plastic bag via at least one sealing ring 111. When the at least one sealing ring 111 is multiple, a stepped sealing barrier can be formed. When the plastic bag expands under pressure, each sealing ring 111 gradually blocks the plastic liquid. Even if a single sealing layer fails, multiple layers of redundancy remain, significantly improving leak prevention during operation.

[0047] Secondly, the end cap 300 may include more structures to further refine the design.

[0048] like Figures 1-2 As shown, in one possible implementation, the end cap 300 further includes a cover portion 2. The cover portion 2 is disposed on one side of the main body 1 and is fixedly connected to the main body 1, so that the main body 1 and the cover portion 2 together form a cover-like structure, which is then mounted on other components. The cover portion 2 is also provided with an opening 21, so that at least part of the contents of other components disposed within the end cap 300 can flow out through the opening 21.

[0049] The opening 21 of the cover body 2 is designed to establish a directional channel for the outflow of contents and provide a structural basis for other refined designs.

[0050] Furthermore, the cover portion 2 is provided with at least one piercing tooth 22. The piercing tooth 22 is positioned on one side of the opening 21 in the second direction x, to pierce the contained portion. The second direction x is perpendicular to the first direction z. The tip of the piercing tooth 22 is positioned toward the center of the main body 1. Accordingly, the second direction x can be understood as the radial direction of the barrel 400.

[0051] The piercing tooth 22 is added on the opening 21 side of the cover part 2 and is accurately positioned in the second direction x. When the flexible glue-containing bag is extruded by an external force (for example, by the piston 500), the piercing tooth 22 automatically penetrates the bag to form a drainage port, eliminating the need for manual pre-piercing operation, improving assembly efficiency and avoiding the risk of human operation errors, and preventing the risk of glue leakage and contamination of the glue cylinder 100 caused by the flexible glue-containing bag being placed into the glue cylinder 100 after being pierced. The design of the piercing tooth 22 with the sharp part facing the center of the main body part 1 allows the piercing force to be concentrated on the central area of the bag. This structure can accurately control the piercing depth and prevent irregular tearing of the bag caused by tooth tip deviation, ensuring that the glue outlet shape is regular to match the subsequent sealing structure.

[0052] As can be understood by those skilled in the art, after the piercing tooth 22 pierces the flexible glue-containing bag, the part pierced by the piercing tooth 22 needs to be sealed.

[0053] Therefore, in one possible implementation, as shown in Figures 1-2 The cover part 2 is also provided with a second sealing part 23. The second sealing part 23 is recessed from the cover part 2 in a direction away from the main body part 1. The projection of the opening 21 and the piercing tooth 22 in the first direction z coincides with the second sealing part 23.

[0054] The second sealing part 23 recessed from the cover part 2 makes the piercing tooth 22 coincide with the opening 21 in the projection area. An annular sealing area is formed around the bag piercing hole at the piercing moment, forcing the contents to flow out of the opening 21 in one direction, and completely blocking the risk of glue backflow and contamination of the glue cylinder 100 through the gap between the piercing tooth 22.

[0055] Furthermore, the specific number of the at least one piercing tooth 22 is not limited. In one possible implementation, the at least one piercing tooth 22 includes two piercing teeth 22. The two piercing teeth 22 are arranged in parallel and at intervals on the cover part 2.

[0056] Each piercing tooth 22 extends to the outside of the second sealing part 23 in the first direction z and extends into the first sealing part 11.

[0057] Here or can be understood as: two piercing teeth 22 by parallel arrangement, first: the two sides of the flexible glue bag are sealed by metal ring, which will inevitably generate the wrinkles along the circumference and extend to the center. In the case of a larger flexible glue bag, the width and depth of the wrinkles will also be deepened. If only a single piercing tooth 22 is provided, it is possible that the piercing tooth 22 is just pierced into the wrinkle, resulting in the flexible glue bag body cannot be pierced at one time, causing the inconvenience of operation. Therefore, by providing two parallel piercing teeth 22, it can be ensured that the piercing tooth 22 can open at least one hole on the flexible glue bag, second: two parallel piercing teeth 22 can open two openings on the flexible glue bag, so that the glue in the flexible glue bag can flow out of the opening 21 pierced by the piercing tooth 22 relatively smoothly, preventing the problem of poor glue discharge caused by the single opening 21. The extension length of the piercing tooth 22 can ensure the normal work of the first sealing part 11 and the second sealing part 23, and ensure that the glue flows out only according to the predetermined path.

[0058] Of course, in another possible implementation, at least one piercing tooth 22 can also include three, four or more piercing teeth 22, which is not limited in this application.

[0059] Through the above structure, the flexible glue bag can be better sealed, and the glue can be further guided to flow by the glue guide groove 24, so as to obtain a stable and reliable glue flow path.

[0060] As shown in Figure 1 In a possible implementation, the cover part 2 is further provided with a glue guide groove 24, one end of the glue guide groove 24 is communicated with the opening 21, and the other end is communicated with the second sealing part 23, so that the contents of other components arranged in the second sealing part 23 can flow out through the opening 21 by the glue guide groove 24.

[0061] The glue guide groove 24 communicates the second sealing part 23 and the opening 21 to form a directional flow channel. After piercing, the contents are constrained in the sealing part, guided to the opening 21 by the glue guide groove 24 and concentrated to flow out, avoiding the disorderly diffusion of glue in the cover part 2. This structure especially optimizes the path control of high flowability glue, and reduces the residue.

[0062] In a possible implementation, the main body part 1 is further provided with a containing groove 25, the containing groove 25 is in the shape of a waist, an ellipse or a circle, the containing groove 25 is arranged at the center of the cover part 2, is recessed from the cover part 2 in the direction away from the main body part 1, and forms a containing space 31.

[0063] By setting the accommodating groove 25, on the one hand, the two sides of the flexible glue containing bag are sealed by the metal ring, so the accommodating groove 25 can just accommodate the sealing ring, thereby forming a plane at the position of the cover body 2, which is beneficial to the glue outflow and sealing performance. Moreover, compared with the round hole, the waist-shaped hole can be compatible with the metal ring assembly tolerance, overcome the angle sensitivity of the round hole alignment, and prevent the offset phenomenon caused by the displacement of the sealing ring during assembly.

[0064] The above is the structure description of the end cover 300 for the glue barrel 100 provided by the present application.

[0065] Please refer to Figures 3-7 , Figure 3 the three-dimensional structure schematic diagram of the barrel body of the glue barrel provided by the present application; Figure 4 the enlarged structure schematic diagram of the barrel body of the glue barrel provided by the present application; Figure 5 the three-dimensional structure schematic diagram of the fixing part of the piston of the glue barrel provided by the present application; Figure 6 the three-dimensional structure schematic diagram of the fixing part of the piston of the glue barrel provided by the present application from another perspective; Figure 7 the three-dimensional structure schematic diagram of the clamping part of the piston of the glue barrel provided by the present application.

[0066] As Figures 3-7 shown, the second aspect of the present application further provides a glue barrel 100, comprising a first assembly 200. The first assembly 200 comprises the end cover 300, the barrel body 400 and the piston 500 as in any one of the preceding embodiments.

[0067] The barrel body 400 is a cylindrical structure extending along the first direction z and open at both ends. The barrel body 400 further forms an accommodating space 31 inside for accommodating the flexible glue containing bag.

[0068] The end cover 300 is sleeved on one side of the barrel body 400.

[0069] The piston 500 is arranged on the other side of the barrel body 400 and slides in the barrel body 400 along the first direction z to extrude the flexible glue containing bag, so that the contents in the flexible glue containing bag flow out through the end cover 300.

[0070] Those skilled in the art can understand that the above is the description of the overall structure of the glue barrel 100. The specific structure of each component of the glue barrel 100 is also not limited.

[0071] First, the specific structure of the piston 500 is not limited.

[0072] As Figures 5-7 shown, in one possible implementation, the piston 500 comprises a first part 5. The first part 5 comprises a fixing part 51 and a clamping part 52 arranged in sequence and fixed to each other in the first direction z.

[0073] The clamping portion 52 is annularly arranged on the outer periphery of the fixing portion 51 and extends outward, and is fixedly connected with the fixing portion 51. When the clamping portion 52 is clamped in an external device, the piston 500 slides in the first direction z inside the external device.

[0074] The piston 500 is locked and matched with the barrel 400 through the clamping portion 52, realizes linear sliding in the first direction z, and limits the excess degree of freedom. When the clamping portion 52 is clamped with other components, the piston 500 can only slide in the axial direction (the first direction z), and radial deviation or rotation is prevented, the directional nature and stability of the movement of the piston 500 in other components are improved, and the assembly structure is simplified.

[0075] Further, in a possible implementation, the clamping portion 52 includes a plurality of elastic sheets 521 extending outward and a fixing ring 522. The plurality of elastic sheets 521 are away from one end of the fixing ring 522, and are upward in the first direction z relative to the fixing ring 522. The fixing ring 522 is sleeved on the fixing portion 51, and is fixed by a plurality of limiting portions 13 of the fixing portion 51 towards the surface of the fixing ring 522, so as to fix the clamping portion 52 on the fixing portion 51.

[0076] Here or can be understood as: the clamping portion 52 is specifically provided as an elastic sheet 521 structure. Through the structure design that one end of the elastic sheet 521 is upward, the elastic sheet 521 can be elastically deformed when being pressed, and when the piston 500 is located inside the barrel 400, the elastic sheet 521 can be elastically abutted with the barrel 400, so as to realize a relatively tight limiting effect, and ensure that when the barrel 400 and the piston 500 are matched, a relatively good sealing effect can be formed. The fixing ring 522 is fixed with the fixing portion 51 through the limiting portion 13, and the overall firmness of the clamping portion 52 is ensured. This scheme takes into account the assembly convenience and use reliability, and can avoid loosening after long-term use.

[0077] Continuing to refer to Figures 5-7 Further, in a possible implementation, the outer side of the plurality of elastic sheets 521 is further provided with at least one guide portion 5211 protruding from the elastic sheet 521, and the guide portion 5211 extends in the second direction x.

[0078] Through the further provision of the plurality of guide portions 5211 on the outer side of the plurality of elastic sheets 521, the piston 500 can be further limited in radial displacement and the accuracy of the movement trajectory is enhanced through the cooperation of the guide portion 5211 and the corresponding guide groove 34 provided in the barrel 400 in the sliding process, so that the piston 500 runs stably along the preset trajectory.

[0079] The above is a possible specific structure of the clamping portion 52. As described above, the piston 500 can include more or fewer structures.

[0080] Therefore, in a possible implementation, the piston 500 further comprises a second part (not shown in the figure) which has the same structure as the first part 5. The first part 5 and the second part are arranged opposite to each other, and the fixing part 51 of the second part is attached to the fixing part 51 of the first part 5 and fixed to each other.

[0081] Here or can be understood as: the piston 500 further comprises a second part which has the same structure as the first part 5. By symmetrically adding the second part, the piston 500 forms a double-end pushing structure. The piston 500 slides bidirectionally in the barrel body 400, thereby balancing the force acting on the piston 500, reducing unilateral wear, and prolonging the service life. Moreover, when sliding unilaterally to the end, it is not necessary to distinguish the front and back of the piston 500. As long as the piston 500 is inserted into the other side, the assembly operation in use is further simplified.

[0082] Those skilled in the art can understand that the specific fixing manner of the first part 5 and the second part is also not limited.

[0083] In a possible implementation, as shown in Figures 5-7 the first part 5 is provided with a first limiting rib 53 and a first limiting groove 54 arranged in the circumferential direction. The second part is provided with a second limiting rib (not shown in the figure) and a second limiting groove (not shown in the figure) arranged in the circumferential direction. The first limiting rib 53 and the second limiting groove are matched, and the first limiting groove 54 and the second limiting rib are matched, thereby buckling and fixing the first part 5 and the second part.

[0084] Through such a structural design, the first part 5 and the second part can be quickly assembled and firmly fixed. Through the double fixing mechanism of the circumferentially designed first limiting rib 53 and the second limiting groove, and the second limiting rib and the first limiting groove 54, the overall structural rigidity of the piston 500 is improved, and the fixing effect of mutual fixation between the components of the piston 500 is also improved.

[0085] Secondly, the structure of the barrel body 400 is also not limited.

[0086] As shown in Figures 3-4 in a possible implementation, the barrel body 400 extends along the first direction z and has a first end 35 and a second end 36 arranged opposite in the first direction z. The end cover 300 is sleeved on the first end 35 or the second end 36 of the barrel body 400. When the piston 500 is placed in the barrel body 400, the piston 500 is pushed by an external force and reciprocates in the barrel body 400.

[0087] Here or can be understood as: the barrel body 400 of the glue barrel 100 provided by the application, by setting the first end 35 and the second end 36 as structures that can be connected with the end cover 300, can make the first end 35 and the second end 36 of the barrel body 400 can be used as glue outlet ends. And the end cover 300 is connected with the first end 35 and the second end 36 of the barrel body 400 in a sleeving manner, after the piston 500 is pushed from the second end 36 to the first end 35, only the end cover 300 needs to be disassembled, the new content is put in, and the end cover 300 is sleeved on the second end 36, and the glue barrel 100 can continue to be used, realizing the quick disassembly and bidirectional use of the glue barrel 100. Moreover, the piston 500 that can reciprocate along the barrel body 400 is further arranged in the barrel body 400, and these designs make the glue barrel 100 provided by the application reusable. Thus, the use cost is greatly saved, and resource waste is reduced.

[0088] Further, a plurality of guide grooves 34 extending in the first direction z are arranged in the barrel body 400. The structure of the guide groove 34 corresponds to the guide portion 5211 of the elastic sheet 521, so that the guide portion 5211 slides in the guide groove 34.

[0089] The corresponding cooperation of the guide groove 34 in the barrel body 400 and the guide portion 5211 of the piston 500 forces the piston 500 to slide along the preset track, and completely eliminates the risk of radial deviation. It is especially suitable for high-viscosity fluid propulsion scenarios to ensure uniformity of glue outlet.

[0090] The above is the corresponding structure design of the barrel body 400 and the piston 500 in the glue barrel 100 provided by the application. The corresponding structure design of the barrel body 400 and the end cover 300 will be described below.

[0091] As shown in Figures 1-4 As described above, the main body portion 1 of the end cover 300 is provided with a plurality of guide grooves 12 extending in the first direction z and a plurality of limiting portions 13 extending in the circumferential direction and protruding from the surface of the main body portion 1.

[0092] Correspondingly, the barrel body 400 is provided with a plurality of guide portions 32 extending in the first direction z on both sides and a plurality of limiting grooves 33 extending in the circumferential direction.

[0093] Here or can be understood as: the end cover 300 and the barrel body 400 are correspondingly provided with two fixing structures in the axial direction (the first direction z) and the circumferential direction. Among them, the plurality of guide grooves 12 extend in the axial direction and are matched with the guide portions 32 extending in the axial direction one by one. The plurality of limiting portions 13 extend in the circumferential direction and are matched with the limiting grooves 33 extending in the circumferential direction one by one, so as to realize the accurate positioning and locking of the end cover 300 and the barrel body 400, and prevent the end cover 300 from falling off under pressure.

[0094] It should be noted that the cartridge 100 provided by the present application can further include more components to achieve more complex functions or to adapt to the special needs of certain types of glue.

[0095] Exemplarily, as shown in Figures 1-7 In a possible implementation, the cartridge 100 further includes a second assembly 600 which is arranged in parallel with the first assembly 200 and has the same structure as the first assembly 200. Exemplarily, the flexible glue bag of the first assembly 200 is provided with a base glue, and the flexible glue bag of the second assembly 600 is provided with a hardening agent.

[0096] At this time, the cartridge 100 can be used to store and extrude AB glue. Specifically, the base glue can be acrylate modified epoxy or epoxy resin, or contain a catalyst and other additives. The hardening agent can be modified amine or other hardening agent, or contain a catalyst and other additives.

[0097] It should be noted that the specific size and connection mode of the first assembly 200 and the second assembly 600 are not limited. In a possible implementation, the diameter of the first assembly 200 is greater than the diameter of the second assembly 600. In another possible implementation, the diameter of the first assembly 200 can be equal to the diameter of the second assembly 600 to achieve certain special functions. Those skilled in the art can design as needed, and the present application does not make any limitation here.

[0098] The first assembly 200 and the second assembly 600 arranged in parallel can respectively contain base glue and hardening agent, and the same structure can be used to realize the synchronous and equal proportion advancing of two-component fluid. This ensures the uniformity of the curing reaction and is suitable for the scene of two-component adhesive that needs accurate proportioning. Moreover, because the components of the cartridge 100 can be repeatedly used, the specific types of the contents in the first assembly 200 and the second assembly 600 can be adjusted at any time during the use of the cartridge 100, and only the new flexible glue bag needs to be replaced, so that the use of the cartridge 100 is more flexible.

[0099] It should be noted that the embodiments of the present application have better implementation, and do not limit the present application in any form. Any skilled person in the art can change or modify the above disclosed technical content into equivalent effective embodiments, as long as it does not deviate from the technical solution of the present application. Any modification or equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. An end cap for a rubber cartridge, characterized in that: including a main body; The main body has a cylindrical structure; the inner wall of the main body is provided with a first sealing portion, which is an annular structure and extends along a first direction to contact and abut against the contained portion of other components at least partially provided in the end cover, so that the contained portion is sealed in the end cover.

2. The end cap according to claim 1, wherein: The end cover also includes a cover body portion, which is arranged on one side of the main body portion and is fixedly connected to the main body portion, so that the main body portion and the cover body portion together form a cover-like structure, which is thus sleeved on other components; the cover body portion is also provided with an opening, so that at least part of the contents in other components arranged in the end cover can flow out through the opening.

3. The end cap according to claim 2, wherein: The cover body is further provided with at least one puncturing tooth; the puncturing tooth is provided on one side of the opening in the second direction to puncture the contained portion; the second direction is perpendicular to the first direction; The tip of the piercing tooth is arranged toward the center of the main body.

4. The end cap according to claim 3, wherein: The cover body is further provided with a second sealing portion; the second sealing portion is formed by the cover body being recessed in a direction away from the main body; the projections of the opening and the piercing teeth in the first direction coincide with the second sealing portion.

5. The end cap according to claim 4, wherein: The at least one piercing tooth includes two piercing teeth; the two piercing teeth are arranged in parallel and at intervals on the cover body; Each of the piercing teeth extends outside the second sealing portion in the first direction and into the first sealing portion.

6. The end cap according to claim 4, wherein: The cover body is further provided with a glue guide groove, one end of which is connected to the opening, and the other end is connected to the second sealing part, so that the contents of other components arranged in the second sealing part can pass through the glue guide groove and flow out of the opening.

7. The end cap according to claim 2, wherein: The main body is further provided with a receiving groove, which is waist-shaped, oval or circular. The receiving groove is provided at the center of the cover, and is formed by the cover being recessed in a direction away from the main body to form a receiving space.

8. The end cap according to claim 1, wherein: The first sealing portion is further provided with at least one sealing ring, which is arranged on the inner surface of the first sealing portion; and when there are at least two sealing rings, the sealing rings are sequentially spaced along the first direction.

9. The end cap according to claim 1, wherein: The main body is further provided with a plurality of guide grooves extending along the first direction, and a plurality of limiting portions extending in the circumferential direction and protruding from the surface of the main body.

10. A rubber cartridge, characterized in that: Comprising a first component; the first component comprises the end cap, barrel and piston according to claims 1-9; The barrel is a cylindrical structure extending along a first direction and open at both ends; a receiving space is formed inside the barrel for receiving the flexible plastic bag; The end cover is sleeved on one side of the barrel; The piston is arranged on the other side of the cylinder body and slides in the cylinder body along the first direction to squeeze the flexible plastic bag so that the content in the flexible plastic bag flows out through the end cover.

Images