Floating capping assembly and multi-head capping mechanism

Abstract

The embodiment of the present invention discloses a floating capping assembly and a multi-head capping mechanism, wherein the floating capping assembly includes a driving tube, a floating shaft, a front cover, and a first spring. The front cover is arranged at the front end of the driving tube, the floating shaft passes through the driving tube and the front cover, the floating shaft is hollow inside, a clutch ring is arranged on the outer periphery of the floating shaft, a through hole is opened on the outer periphery of the clutch ring, a second spring and a glass bead with a diameter larger than the diameter of the through hole are arranged in the clutch ring; one end of the second spring acts on the floating shaft, and the other end acts on the glass bead, so that the glass bead is embedded in the through hole and abuts against the inner wall of the driving tube; the inner wall of the driving tube is concavely provided with a plurality of slots corresponding to the glass bead; one end of the first spring acts on the driving tube, and the other end acts on the clutch ring to push the floating shaft toward the front end. The present invention can be used in both horizontal and vertical modes, improves the working efficiency of the equipment, reduces the equipment cost, has strong versatility, and can be used as a standard component in any internal and external threaded capping / pressing mechanical equipment within the compatible size range.

Description

Technical Field

[0001] The invention relates to the technical field of sealing packaging, and in particular to a floating screw cap assembly and a multi-head screw cap mechanism. Background Art

[0002] At present, traditional capping mechanisms are usually single-head operation, and due to the problem that multiple capping components are difficult to match and dock at the same time due to multiple heads, there are relatively few universal multi-head capping mechanisms. The efficiency of traditional single-head capping is low, and the existing multi-head capping mechanism has a complex and large structure. The universality of multi-specification product changeover is weak and the changeover is troublesome. It is not suitable for special-shaped cap spinning, occupies a large space, and the installation and debugging are not simple and convenient. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a floating capping assembly and a multi-head capping mechanism to enable multi-head synchronous operation.

[0004] In order to solve the above technical problems, an embodiment of the present invention proposes a floating rotary cover assembly, including a driving tube, a floating shaft, a front cover, and a first spring. The front cover is arranged at the front end of the driving tube, the floating shaft passes through the driving tube and the front cover, the floating shaft is hollow inside, a clutch ring is arranged on the outer periphery of the floating shaft, a through hole is opened on the outer periphery of the clutch ring, a second spring and a glass bead with a diameter larger than the diameter of the through hole are arranged in the clutch ring; one end of the second spring acts on the floating shaft, and the other end acts on the glass bead, so that the glass bead is embedded in the through hole and abuts against the inner wall of the driving tube; a plurality of card grooves corresponding to the glass beads are recessed on the inner wall of the driving tube; one end of the first spring acts on the driving tube, and the other end acts on the clutch ring to push the floating shaft toward the front end.

[0005] Furthermore, there are four groups of through holes, second springs and glass beads.

[0006] Correspondingly, an embodiment of the present invention also provides a multi-head screw cap mechanism, including the above-mentioned floating screw cap assembly, and also includes a transmission box, a driving motor is provided at one end of the transmission box, and multiple groups of driving shafts are provided at the other end, and a gear transmission pair is provided in the transmission box, and the driving motor drives the driving shaft to rotate synchronously through the gear transmission pair; the driving shaft is hollow inside, and a floating screw cap assembly is provided at the front end of the driving shaft, and the rear end of the driving tube of the floating screw cap assembly is sleeved on the front end of the driving shaft.

[0007] Furthermore, it also includes a rotating frame, a rotating shaft, a rotating plate and a rotating drive assembly. The rotating shaft is passed through the rotating frame through a bearing, the rotating plate is arranged on the rotating shaft, a pressing cylinder is arranged on the rotating plate, and the floating rotary cover assembly is arranged on the piston rod of the pressing cylinder; the rotating drive assembly includes a gear, a rack, and a driving cylinder. The gear is arranged on the rotating shaft, and the rack is meshed with the gear; the piston rod of the driving cylinder is connected to the rack, and the gear is driven to rotate by driving the rack, so that the floating rotary cover assembly on the rotating plate rotates.

[0008] Furthermore, it also includes a guide groove matching the rack, the rack is arranged in the guide groove, and both the rack and the guide groove are in an inverted "T" shape.

[0009] Furthermore, a guide rail parallel to the pushing direction of the pressing cylinder is provided on the rotating plate, a guide block is provided on the guide rail, and the guide block is connected to the bottom of the transmission box of the floating rotary cover assembly.

[0010] The beneficial effects of the present invention are as follows: the present invention can quickly change the shape and is compatible with various types of spin-on packaging of special-shaped caps, can be used in both horizontal and vertical types, improves the working efficiency of the equipment, reduces the equipment cost, reduces the equipment footprint, has strong versatility, and can be used as a standard component in any internal and external threaded spinning / capping mechanical equipment within the compatible size range. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural diagram of a floating rotary cover assembly according to an embodiment of the present invention.

[0012] Figure 2 It is a cross-sectional view of the floating rotary cover assembly along the central axis of the embodiment of the present invention.

[0013] Figure 3 Is the floating cover assembly along Figure 2 Cross-sectional view at the middle BB.

[0014] Figure 4 It is a three-dimensional structural diagram of a multi-head capping mechanism according to an embodiment of the present invention.

[0015] Figure 5 2 is a side view of a multi-head capping mechanism according to an embodiment of the present invention.

[0016] Figure 6 yes Figure 5 Cross-sectional view at AA in the middle.

[0017] Figure 7 It is a partial structural diagram of the multi-head capping mechanism according to an embodiment of the present invention.

[0018] Figure 8 2 is another partial structural diagram of the multi-head capping mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0020] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back, etc.), they are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0022] Please refer to Figure 1 to Figure 3 The floating rotary cover assembly 10 of the embodiment of the present invention includes a driving tube 1, a floating shaft 2, a front cover 3, and a first spring 7.

[0023] The front cover 3 is arranged at the front end of the driving tube 1, and the floating shaft 2 passes through the driving tube 1 and the front cover 3. The floating shaft 2 is hollow inside, and a clutch ring 4 is arranged on the outer periphery of the floating shaft 2. The clutch ring 4 is fixed on the floating shaft 2 by a plurality of pins 8. A through hole is opened on the outer periphery of the clutch ring 4, and a second spring 5 and a glass bead 6 with a diameter larger than the diameter of the through hole are arranged in the clutch ring 4. The glass bead 6 is preferably made of steel. One end of the second spring 5 acts on the floating shaft 2, and the other end acts on the glass bead 6, so that the glass bead 6 is embedded in the through hole and abuts against the inner wall of the driving tube 1. The inner wall of the driving tube 1 is concavely provided with a plurality of slots corresponding to the glass bead 6. Preferably, the slots are spaced at equal angles. One end of the first spring 7 acts on the driving tube 1, and the other end acts on the clutch ring 4 to push the floating shaft 2 toward the front end.

[0024] As an implementation manner, there are four groups of through holes, second springs 5 ​​and glass beads 6, and the four groups of through holes are spaced 90 degrees apart.

[0025] As an implementation mode, the inner side of the cross section of the tail end of the driving tube 1 is a regular polygon, which is convenient for quick disassembly and prevents sliding during rotation.

[0026] The floating cover assembly 10 of the embodiment of the present invention can be directly installed on the driving shaft 13 when in use, and a contour cavity is provided at the front end of the floating shaft 2, or a fixture with a contour cavity is directly installed. After the material cover (such as the sealing cover of a small paste or container such as shoe polish or toothpaste) enters the contour cavity, vacuum adsorption is performed through the hollow inside of the floating shaft 2 (the other end of the floating shaft 2 is connected to the air pipe through a rotary joint), and the material can be fixed.

[0027] Please refer to Figures 1 to 8The multi-head capping mechanism of the embodiment of the present invention comprises a floating capping assembly 10 and a transmission box 11. A driving motor 12 is provided at one end of the transmission box 11, and a plurality of driving shafts 13 are provided at the other end. A gear transmission pair 14 is provided inside the transmission box 11, and the driving motor 12 drives the driving shafts 13 to rotate synchronously and in the same direction through the gear transmission pair 14. The driving shafts 13 are hollow inside, and the front ends of the driving shafts 13 are provided with floating capping assemblies 10, and the rear end of the driving tube 1 of the floating capping assembly 10 is sleeved on the front end of the driving shaft 13.

[0028] The multi-head capping mechanism of the embodiment of the present invention can be directly used as a vertical capping mechanism. When the floating capping assembly 10 at the front end of each drive shaft 13 coincides with the center of the material capping opening, the first spring 7 in the floating capping assembly 10 can be axially adaptively extended and retracted after hard contact, which is convenient for the profiling cavity and the material cap to dock. In specific production, it is impossible for all material caps to extend to the same length in the jig. The embodiment of the present invention can prevent the empty rotation caused by the lack of contact between the cap and the profiling cavity when the cap is screwed by appropriately preloading the first spring 7.

[0029] The driving motor 12 is a stepping motor. When the driving motor 12 is oriented and starts to rotate, it drives multiple driving shafts 13 to rotate in the same direction through the gear transmission pair 14 in the transmission box 11. Because the product's extended length and angle in the material are not necessarily consistent, the floating capping assembly 10 has a sequence of capping. When the cap is tightened first, it must be immediately released after the torque is saturated to make the corresponding main shaft idle, otherwise the product will be damaged. When the torque is in place, the driving tube 1 of the floating capping assembly 10 still rotates, the glass bead 6 is rotated out of the slot, and the glass bead 6 is pressed into the clutch ring 4, and the floating shaft 2 will automatically release the force and stop.

[0030] The embodiment of the present invention can be applied to various micro and small pastes and other caliber (φ3-25mm) containers with internal and external threaded capping with small screwing force and fast capping speed. For example, shoe polish, toothpaste, syringes and other products with threaded capping can be sealed and packaged at one time.

[0031] As an embodiment, the multi-head capping mechanism also includes a vacuum pressure gauge for detecting the vacuum pressure in the floating shaft 2. When the material and the material cover are tightened and completely leave the contour cavity, the pressure value will change. If the spinning is unsuccessful, the material cover will be sucked back into the contour cavity by the vacuum, which can ensure successful capping.

[0032] As an embodiment, the multi-head capping mechanism further includes a rotating frame 15, a rotating shaft 16, a rotating plate 17 and a rotating drive assembly. The rotating shaft 16 is provided on the rotating frame 15 through a bearing, the rotating plate 17 is provided on the rotating shaft 16, a pressing cylinder 18 is provided on the rotating plate 17, and the floating capping assembly 10 is provided on the piston rod of the pressing cylinder 18; the rotating drive assembly includes a gear 19, a rack 20, and a driving cylinder 21. The gear 19 is provided on the rotating shaft 16, and the rack 20 is meshed with the gear 19. The piston rod of the driving cylinder 21 is connected to the rack 20, and the gear 19 is driven to rotate by driving the rack 20, so that the floating capping assembly 10 on the rotating plate 17 rotates. The pressing cylinder 18 drives the floating capping assembly 10 to perform capping and capping actions.

[0033] The multi-head capping mechanism of the embodiment of the present invention can be directly used as a horizontal capping mechanism. The driving cylinder 21 drives the rotating plate 17 to rotate 90 degrees, so that the multi-head capping mechanism stands up, the front end of the floating shaft 2 faces upward, and the contoured cavity on the floating shaft 2 receives a single material cover separated from the vibrating plate trough; if the material cover is a special-shaped cover, the driving motor 12 will uniformly adjust the rotation angle of all floating shafts 2 to make it coincide with the positioning entry point of the special-shaped cover that is about to fall, ensuring that the material is received in place.

[0034] Preferably, the rotating frame 15 , the rotating shaft 16 and the rotating driving assembly are each provided in two groups, which are respectively arranged on two sides, and the two ends of the rotating plate 17 are respectively arranged on the rotating shaft 16 on both sides to improve the overall stability.

[0035] As an implementation manner, the multi-head capping mechanism further includes a guide groove 22 matched with the rack 20, the rack 20 is disposed in the guide groove 22, and both the rack 20 and the guide groove 22 are in an inverted "T" shape.

[0036] As an implementation manner, a guide rail 23 parallel to the pushing direction of the pressing cylinder 18 is provided on the rotating plate 17 , a guide block 24 is provided on the guide rail 23 , and the guide block 24 is connected to the bottom of the transmission box 11 of the floating rotary cover assembly 10 .

[0037] Preferably, there are two guide rails 23, which are respectively arranged on both sides of the pressing cylinder 18 to improve stability.

[0038] The rotary drive assembly adopted in the embodiment of the present invention makes the center of gravity of the overall multi-head capping mechanism more stable during rotation, and improves the production efficiency.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-head capping mechanism, characterized in that: Including floating cover assembly and transmission box, The floating cover assembly comprises a driving tube, a floating shaft, a front cover, and a first spring. The front cover is arranged at the front end of the driving tube. The floating shaft passes through the driving tube and the front cover. The floating shaft is hollow inside. A clutch ring is arranged on the outer periphery of the floating shaft. A through hole is opened on the outer periphery of the clutch ring. A second spring and a glass bead with a diameter larger than that of the through hole are arranged in the clutch ring. One end of the second spring acts on the floating shaft, and the other end acts on the glass bead, so that the glass bead is embedded in the through hole and abuts against the inner wall of the driving tube. The inner wall of the driving tube is concavely provided with a plurality of slots corresponding to the glass bead. One end of the first spring acts on the driving tube, and the other end acts on the clutch ring to push the floating shaft toward the front end. A drive motor is provided at one end of the transmission box, and multiple sets of drive shafts are provided at the other end. A gear transmission pair is provided in the transmission box, and the drive motor drives the drive shaft to rotate synchronously through the gear transmission pair. The drive shaft is hollow inside, and a floating screw cover assembly is provided at the front end of the drive shaft. The tail end of the drive pipe of the floating screw cover assembly is sleeved on the front end of the drive shaft. The multi-head capping mechanism also includes a rotating frame, a rotating shaft, a rotating plate and a rotating driving assembly. The rotating shaft is installed on the rotating frame through a bearing, the rotating plate is installed on the rotating shaft, a pressing cylinder is installed on the rotating plate, and the floating capping assembly is installed on the piston rod of the pressing cylinder; the rotating driving assembly includes a gear, a rack and a driving cylinder, the gear is installed on the rotating shaft, and the rack is meshed with the gear; the piston rod of the driving cylinder is connected to the rack, and the gear is driven to rotate by driving the rack, so that the floating capping assembly on the rotating plate rotates; The multi-head capping mechanism also includes a guide groove matching the rack, the rack is arranged in the guide groove, and both the rack and the guide groove are in an inverted "T" shape; A guide rail parallel to the pushing direction of the pressing cylinder is arranged on the rotating plate, a guide block is arranged on the guide rail, and the guide block is connected with the bottom of the transmission box of the floating rotary cover assembly.

2. The multi-head capping mechanism according to claim 1, characterized in that: There are four groups of through holes, second springs and glass beads.

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