Quick replacement mechanism for charging barrel of dispensing machine

Abstract

The utility model discloses a quick replacement mechanism for a charging barrel of a dispensing machine in the technical field of dispensing machines, and aims to solve the problem that the charging barrel of the dispensing machine in the prior art is relatively complicated to disassemble and assemble. The clamping device comprises a support, a plurality of clamping jaw assemblies are hinged to the support, each clamping jaw assembly comprises two clamping jaws which can independently rotate and are oppositely arranged, the opposite faces of every two clamping jaws are each provided with a clamping face used for clamping a charging barrel, and a plurality of positioning supports are arranged on the support. Each positioning support is provided with a limiting rod, each clamping jaw is rotationally provided with a sliding shaft, the end of each sliding shaft is provided with a U-shaped hole, each limiting rod slidably penetrates through the corresponding U-shaped hole, and each sliding shaft is sleeved with a spring capable of abutting against the corresponding limiting rod. The material barrel replacing device is used for rapidly replacing the standby material barrel, tedious fixing modes such as bolts are not needed, operation is convenient and fast, replacing time can be shortened, and production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to a quick-change mechanism for the dispensing cylinder of a dispensing machine, belonging to the field of dispensing machine technology. Background Technology

[0002] In the printing industry or in some glue dispensing processes, glue cartridges are often used to supply the corresponding glue. The glue is extruded by controlling the piston of the glue cartridge to descend through air pressure. After the glue cartridge is used, it needs to be replaced. Currently, the common way to fix the glue cartridge is to use corresponding fittings and lock it with bolts, etc. However, this method is relatively cumbersome to install and disassemble the cartridge, and it cannot be replaced quickly. It is not conducive to simplifying assembly operations and affects production efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a quick-change mechanism for dispensing machine cylinders, which can quickly replace spare cylinders without the need for cumbersome fixing methods such as bolts. It is easy to operate, helps to shorten the replacement time, and improves production efficiency.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] This utility model provides a quick-change mechanism for a dispensing machine cylinder, including a bracket. Several sets of gripper assemblies are hinged on the bracket. Each set of gripper assemblies includes two independently rotatable and oppositely arranged grippers. The opposite surfaces of each pair of grippers are provided with a gripping surface for holding the cylinder. The bracket is provided with multiple positioning supports. Each positioning support is equipped with a limit rod. Each gripper is rotatably equipped with a sliding shaft. Each end of the sliding shaft is provided with a U-shaped hole. The limit rod slides through the corresponding U-shaped hole. Each sliding shaft is fitted with a spring that can abut against the limit rod. The positions of the limit rod and the sliding shaft are such that when the cylinder is taken out or put in, the length of the spring itself will change from long to short and then back to long.

[0006] Specifically, the bracket includes a support plate, on which several mounting plates are slidably disposed in the vertical direction. The positioning support is fixedly disposed on the corresponding mounting plate. The mounting plate can be positioned in the height direction. The support plate is also mounted with a mounting seat, on which a guide shaft is mounted. The gripper is rotatably disposed on the guide shaft and can slide along the axis of the guide shaft.

[0007] Specifically, it also includes multiple limiting rings. The gripper assembly is provided with at least two sets. The multiple limiting rings are arranged above the topmost gripper and below the bottommost gripper. When the gripper assembly clamps, two adjacent grippers form an arc surface for holding the material cylinder. The limiting rings are used to position and limit the material cylinder above or below.

[0008] Specifically, a flexible pad is provided at the clamping surface of each of the grippers.

[0009] Specifically, each of the grippers is fixedly provided with a contact rod on its inner side. The contact rod is used to contact the wall of the material cylinder before it is placed in, so that the two grippers arranged opposite each other can engage.

[0010] Specifically, the contact rods of the two opposing grippers do not overlap in the height direction.

[0011] Specifically, the bracket is also equipped with a limiting component to prevent the gripper opening angle from being too large.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0013] This invention utilizes a transmission limiting mechanism between a limiting rod and a sliding shaft. The spring force abuts against the limiting rod, allowing the dispensing machine's barrel to experience both compression and release states as the gripper angle changes during insertion or removal. The compression of the spring drives the gripper to a corresponding angle, ensuring stable force is applied to maintain this state during opening and closing. This allows for direct adjustment of the gripper angle through insertion and removal, with the spring assisting in maintaining this angle. Consequently, it automatically and stably clamps the machine during operation and automatically opens the gripper against spring force during removal, eliminating the need for bolt locking. This convenient operation improves replacement efficiency and ensures smooth production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the barrel changing mechanism provided in this embodiment of the utility model;

[0015] Figure 2 This is a front view of the barrel changing mechanism provided in this embodiment of the utility model;

[0016] Figure 3 This is a utility model Figure 2 A cross-sectional view along the AA direction of the barrel changing mechanism provided in the embodiment;

[0017] Figure 4 This is a side view of the barrel changing mechanism provided in an embodiment of the present utility model;

[0018] Reference numerals: 1. Bracket; 2. Gripper assembly; 3. Positioning support; 4. Limiting rod; 5. Sliding shaft; 6. Spring; 7. Mounting plate; 8. Threaded rod; 9. Mounting seat; 10. Guide shaft rod; 11. Limiting ring; 12. Flexible pad; 13. Contact rod. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0022] This utility model provides a quick-change mechanism for a dispensing machine cartridge, used for rapidly replacing spare cartridges without the need for cumbersome bolt fixing methods. This convenient operation helps shorten replacement time and improve production efficiency. To achieve the mechanism's structural function, it includes a support 1. Specifically, several sets of gripper assemblies 2 are hinged to the support 1. Each set of gripper assemblies 2 includes two independently rotatable and relatively opposite grippers. Figure 1As shown, each pair of grippers has a gripping surface on its opposite side for holding the dispensing cylinder. Since the dispensing cylinder of a dispensing machine is usually cylindrical, it is preferable that the gripping surface of the grippers be an arc surface. To simplify the installation of the dispensing cylinder, multiple positioning supports 3 are provided on the bracket 1, and a limit rod 4 is installed on each positioning support 3. The positioning supports 3 can be positioned as follows: Figure 4 The design shown adopts a "C" shape, which, combined with the limiting rod 4, forms an "O" shape structure, as shown. Figure 3 and Figure 4 As shown, each gripper is rotatably equipped with a sliding shaft 5, and a U-shaped hole is opened at the end of each sliding shaft 5, allowing the limiting rod 4 to slide through the corresponding U-shaped hole. Finally, a spring 6 is sleeved on each sliding shaft 5 to abut against the limiting rod 4, as shown. Figure 3 and Figure 4 As shown, the positions of the limiting rod 4 and the sliding shaft 5 are set to ensure that when the material cylinder is taken out or put in, the length of the spring 6 will change from long to short and then back to long. That is, the spring 6 will first be compressed and then pop out. During the compression process, the spring 6 will have a shortest compression point with the limiting rod 4, at which time the elastic force of the spring 6 is the maximum. When the angle of the gripper causes the spring 6 to overcome this position during the movement, the compression elastic force of the spring 6 will be released instantly and assist the gripper to automatically rotate a certain angle along the driving direction. That is, if the gripper is opening, the spring 6 will directly drive the gripper to open; if the gripper is closing, the spring 6 will drive the gripper to close (that is, to stably clamp the material cylinder and provide corresponding elastic force to ensure the stability of the clamping). In the above method, when personnel change the material cylinder, there is no need to use corresponding fasteners for assembly and locking. The corresponding material cylinder can be directly taken out and inserted, which effectively simplifies the personnel's replacement operation and facilitates the rapid replacement of material cylinders, thereby effectively promoting production operations.

[0023] This utility model provides a quick-change mechanism for a dispensing machine barrel. Considering the need to accommodate barrels of different lengths at different positions, the grippers can be configured for adjustable vertical positioning. Specifically, the bracket 1 includes a support plate, and several mounting plates 7 are slidably mounted on the support plate in the vertical direction. Figure 1 As shown, the positioning support 3 is fixedly mounted on the corresponding mounting plate 7, and the mounting plate 7 can be positioned in the height direction (it can be fixed by setting a threaded rod 8 through the support plate on the mounting plate 7, and locking the threaded rod 8 with a nut; other positioning methods are not limited here). At the same time, a mounting base 9 is also mounted on the support plate, and a guide shaft 10 is mounted on the mounting base 9, as shown... Figure 1As shown, the gripper is rotatably mounted on the guide shaft 10 and can slide along the axis of the guide shaft 10. With this configuration, the height positions of the positioning support 3 and the gripper are linked. By actively driving the height position change of the mounting plate 7, the gripper can be passively raised or lowered accordingly. Other height adjustment methods are not further limited here.

[0024] This utility model provides a quick-change mechanism for a dispensing machine cylinder. To prevent the cylinder from slipping off from below or vibrating during operation, causing instability in its vertical position, the mechanism can include multiple limiting rings 11. Specifically, the gripper assembly 2 can be configured with at least two sets, with the multiple limiting rings 11 positioned above the top gripper and below the bottom gripper. Figure 1 as well as Figure 4 As shown, when the gripper assembly 2 is clamping, the two adjacent grippers form an arc surface for holding the material cylinder, while the limiting ring 11 is used to position and limit the upper or lower part of the material cylinder. By adjusting the height of the grippers, the upper and lower sides of the material cylinder can be clamped by the limiting ring 11. In order to improve the stability of the clamping surface, a flexible pad 12 is provided at the clamping surface position of each gripper for flexible contact with the material cylinder.

[0025] This utility model provides a quick-change mechanism for a dispensing machine barrel. Considering that when the barrel is removed, the grippers can easily open outwards over the outer side of the gripper, but when the barrel is inserted, there is no good contact point for the gripper to close. To facilitate the smooth closing of the gripper, a contact point with the barrel is provided. Figure 1 As shown, a contact rod 13 is fixedly installed on the inner side of each gripper. The contact rod 13 is used to contact the wall of the material cylinder before it is inserted, so that the two grippers positioned opposite each other can engage. The specific angle and length are not limited here, as long as the function is achieved. In order to avoid the contact rods 13 from colliding after the two opposing grippers are engaged, the contact rods 13 of the two opposing grippers are not overlapped in the height direction, that is, they are staggered in the height direction. This avoids the structural components from conflicting when the contact rods 13 are too long, and also helps to extend the position of the contact point.

[0026] The present invention provides a quick-change mechanism for a dispensing machine cylinder. In order to prevent the clamping angle from being too large due to the spring 6 being pushed out, a limiting component is also provided on the bracket 1 to prevent the clamping angle from being too large.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A quick-change mechanism for a dispensing machine barrel, characterized in that, The utility model provides a kind of material cylinder holder, including support (1), a plurality of groups of jaw assemblies (2) are hingedly provided on the support (1), each group of the jaw assemblies (2) includes two independently rotatable and oppositely arranged jaws, the opposite surface of each two jaws is provided with a clamping surface for clamping the material cylinder, a plurality of positioning supports (3) are provided on the support (1), a limiting rod (4) is mounted on each positioning support (3), a sliding shaft (5) is rotatably arranged on each jaw, a U-shaped hole is formed in the end of each sliding shaft (5), the limiting rod (4) slides through the corresponding U-shaped hole, a spring (6) capable of abutting against the limiting rod (4) is sleeved on each sliding shaft (5), the position of the limiting rod (4) and the sliding shaft (5) satisfies that the length of the spring (6) itself will become long, short and long again when the material cylinder is taken out or put in.

2. The quick change mechanism for a glue dispenser cartridge according to claim 1, wherein, The support (1) includes a support plate, a plurality of mounting plates (7) are slidably arranged on the support plate in the vertical direction, the positioning supports (3) are fixedly arranged on the corresponding mounting plates (7), the mounting plates (7) can be positioned in the height direction, a mounting seat (9) is mounted on the support plate, a guide shaft (10) is mounted on the mounting seat (9), the jaws are rotatably arranged on the guide shaft (10) and can slide along the axis direction of the guide shaft (10).

3. The quick change mechanism for a glue dispenser cartridge according to claim 2, wherein, A plurality of limiting ring pieces (11) are further included, the jaw assemblies (2) are arranged in at least two groups, and the plurality of limiting ring pieces (11) are arranged above the topmost jaws and below the bottommost jaws, the adjacent two jaws of the jaw assemblies (2) form an arc surface for holding the material cylinder when clamping, and the limiting ring pieces (11) are used for positioning and limiting the upper or lower part of the material cylinder.

4. The quick change mechanism for a glue dispenser cartridge of claim 1, wherein, A flexible pad (12) is arranged at the clamping surface position of each jaw.

5. The quick change mechanism for a glue dispenser cartridge of claim 1, wherein, A contact rod (13) is fixedly arranged on the inner side of each jaw, which is used for contacting the wall surface of the material cylinder in advance when the material cylinder is put in, so that the two oppositely arranged jaws are buckled.

6. The quick change mechanism for a glue dispenser cartridge of claim 5, wherein, The contact rods (13) of the two opposite jaws do not coincide in the height direction.

7. The quick change mechanism for a glue dispenser cartridge of claim 1, wherein, The support (1) is further provided with a limiting member for preventing the jaw from opening too large.

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