Bayonet assembly and rotary filling table

Abstract

The bayonet assembly comprises a fixing base and a bayonet arranged at the front end of the fixing base, the inner ring of the bayonet is smaller than the outer diameter of the annular outer edge of a bag opening, clamping plates are symmetrically arranged on the two sides of the bayonet, the middles of the clamping plates are rotationally installed on the fixing base, and the rear ends of the clamping plates are obliquely arranged outwards and are rotationally connected with connecting rods. The other ends of the two connecting rods are hinged to the same shifting rod, the shifting rod is arranged on the fixing base in a sliding and limiting mode along the center line of the clamping opening to form two locking positions, and when the shifting rod stays at the two locking positions respectively, the front ends of the two clamping plates are opened outwards or closed inwards so as to release or clamp the bag opening. The outer edge of the bag opening is hung through the bayonet, the soft bag is borne through the fixing base, meanwhile, the clamping plate capable of being opened and closed is arranged, the bag opening is limited through the clamping plate, and the bag opening is prevented from being separated from the bayonet, so that the bag hanging function and the bag clamping function are achieved through different components, the clamping stability of the bag opening is improved, the application range is wider, and cost is lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to filling machine technical field especially relates to a bayonet assembly and rotary filling platform. BACKGROUND

[0002] The soft bag filling machine is mainly used for liquid filling, such as the filling production of medical infusion bags, dialysis bags and the like. The bag opening of the soft bag is relatively hard compared to the body texture, which is generally a hard plastic part, and the bottom of the bag opening is provided with an annular outer edge. During filling, the bag opening needs to be clamped by a bag clamping assembly to fix the soft bag for subsequent filling. A Chinese invention application with application publication number CN 107776928 A discloses a full-automatic soft bag filling machine. Two bag clamping cylinders of a bag clamping device are used to respectively push two oppositely and rotationally arranged bag clamping plates to make opening and closing movements, so as to form a clamping opening with variable spacing, and then clamp the bag opening of the soft bag. This structure of the bag clamping device has at least two defects. First, two cylinders need to be installed for one clamping opening, which increases the cost. Second, the bag relies entirely on the friction force between the clamping opening and the bag opening to form vertical fixation. When the bag is empty, it is completely acceptable. However, when the bag is filled with liquid, it can only be applied to small-volume soft bags. For large-volume soft bags, due to the weight, the "hooking" problem is likely to occur. Therefore, it is necessary to optimize the structure of the existing bag clamping device. SUMMARY

[0003] The utility model aims at the deficiency of prior art and provides a bayonet assembly and rotary filling platform. The bag hanging and clamping functions are separated, which improves the clamping stability of the bag opening, has a wider application range, and is lower in cost.

[0004] The technical scheme for achieving the utility model is as follows:

[0005] A bayonet assembly comprises a fixed seat, a bayonet is arranged at the front end of the fixed seat and is adapted to the bag opening and allows the bag opening to freely enter and exit in the horizontal direction, the inner circle of the bayonet is smaller than the outer diameter of the annular outer edge of the bag opening, two clamping plates are symmetrically arranged on both sides, the middle part of the clamping plate is rotationally installed on the fixed seat, the rear end is outwardly inclined and rotationally connected with a connecting rod, the other end of the two connecting rods is hingedly connected to the same lever, the lever is slidingly and limitingly arranged on the fixed seat along the center line of the bayonet, forming two locking positions, and when the lever stays at the two locking positions respectively, the front end of the two clamping plates is outwardly opened or inwardly closed to release or clamp the bag opening.

[0006] Further, a U-shaped notch is arranged at the front end of the fixed seat, an upper pressing plate and a lower pressing plate with arc-shaped structures are arranged on the upper and lower surfaces of the U-shaped notch respectively, the inner circles of the upper pressing plate and the lower pressing plate protrude from the U-shaped notch, and the bayonet is formed.

[0007] Further, the inner side of the free end of the upper and lower pressing plates is provided with a chamfer, and the lower surface and the upper surface are respectively provided with a slope.

[0008] Further, the fixing seat is provided with a strip-shaped through groove located on the center line of the bayonet, the shifting rod gap is located in the strip-shaped through groove, and two ends of the strip-shaped through groove correspond to the two locking positions.

[0009] Further, the bottom plate is arranged on the bottom of the fixing seat, the upper surface of the bottom plate is provided with a limiting groove at positions corresponding to the two locking positions, and the bottom of the shifting rod is elastically provided with a limiting protrusion matched with the limiting groove.

[0010] Further, the lower surface of the fixing seat is provided with a mounting groove, the clamping plate is located in the mounting groove, and a first limiting plate is arranged on the fixing seat below.

[0011] Further, the upper surface of the connecting rod is provided with a second limiting plate fixed on the fixing seat.

[0012] A rotary filling table comprises a rotating disc capable of rotating around itself, a plurality of bayonet assemblies as described above are uniformly arranged on the rotating disc in the circumferential direction, the bayonet of the bayonet assembly extends to the outer circumferential surface of the rotating disc, the outer circumferential surface of the rotating disc is provided with an upper bag station and a lower bag station, a first bag pushing mechanism and a second bag pushing mechanism are respectively hung above the upper bag station and the lower bag station, the first bag pushing mechanism is suitable for moving the shifting rod towards the locking position of the clamping plate, and the second bag pushing mechanism is suitable for moving the shifting rod towards the locking position of the clamping plate.

[0013] By adopting the technical scheme, the utility model has the following beneficial effects:

[0014] (1) The utility model discloses a bayonet is used for hanging the outer edge of the bag opening, the fixed seat is used for bearing the soft bag, and the clamping plate is used for being opened and closed, the bag opening is limited by the clamping plate, the bag opening is prevented from separating from the bayonet, the bag hanging function and the bag clamping function are realized by different components, and the clamping stability of the bag opening is improved.

[0015] (2) The utility model discloses that the upper and lower pressing plates form the bayonet, the structure is simple, the longitudinal movement of the bag opening is limited, and the bag hanging stability is further improved.

[0016] (3) The utility model discloses that the upper and lower pressing plates are provided with chamfers and slopes at the free ends, the size of the two entrances of the bayonet is expanded, and the bag hanging operation is more convenient.

[0017] (4) The utility model discloses that the strip-shaped through groove is used for limiting the shifting position of the shifting rod, and the structure is simple.

[0018] (5) The utility model discloses through the limit groove and the limit convex part of mutual cooperation, make the dialing rod still can keep staying on two locking position under the smaller external force, reduce the dialing rod micro - motion risk caused because of machine vibration, improve the clamping stability.

[0019] (6) The utility model discloses through setting up first limit board and second limit board to limit the longitudinal deviation of clamping plate and connecting rod respectively, further improve the stability of clamping movement.

[0020] (7) The utility model discloses a filling table containing novel structure bayonet assembly, only need to set up the push bag mechanism of pushing dialing rod movement in the bag feeding station and the bag unloading station, can realize automatic clamping and release, need not install the drive structure on each bayonet assembly, simplify the overall structure, reduce the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawings, the utility model is further detailed, wherein:

[0022] Figure 1 It is the structure schematic diagram of the rotary filling table of the utility model;

[0023] Figure 2 It is the structure schematic diagram of the bayonet assembly of the utility model;

[0024] Figure 3 It is the plan view of the bayonet assembly of the utility model;

[0025] Figure 4 It is the bottom view of the bayonet assembly of the utility model;

[0026] Figure 5 It is the section view of the bayonet assembly of the utility model.

[0027] The sign in the drawing is:

[0028] Rotating disc 1, fixed seat 2, U-shaped notch 2-1, strip-shaped through slot 2-2, installation groove 2-3, clamping plate 3, connecting rod 4, dialing rod 5, limit convex part 5-1, upper pressing plate 6, lower pressing plate 7, bottom plate 8, limit groove 8-1, first limit board 9, second limit board 10. DETAILED DESCRIPTION

[0029] In order to better understand the above technical scheme, the above technical scheme will be explained in detail in the following in conjunction with the drawing of the specification and specific embodiment.

[0030] (Example 1)

[0031] As Figures 1 to 5The rotary filling table shown includes a rotating disc 1 that can rotate around itself, and a plurality of bayonet assemblies are uniformly arranged on the rotating disc 1 in the circumferential direction to suspend and clamp the bag opening of the soft bag. The bayonet assembly includes a fixing seat 2 that is detachably fixed to the rotating disc 1 by screws, and the front end of the fixing seat 2 is provided with a bayonet that is matched with the bag opening and is suitable for the bag opening to freely enter and exit in the horizontal direction. The bayonet extends to the outer circumferential surface of the rotating disc 1, and the inner circle is smaller than the outer diameter of the annular outer edge of the bag opening, and is used to suspend the bag opening. The two sides of the bayonet are symmetrically provided with clamping plates 3, the middle part of the clamping plate 3 is rotatably installed on the fixing seat 2, the rear end is outwardly inclined and horizontally arranged and rotatably connected with connecting rods 4, the other end of the two connecting rods 4 is hingedly connected to the same lever 5, the lever 5 is slidingly and limitingly arranged on the fixing seat 2 along the center line of the bayonet, and forms two locking positions. When the lever stays at the two locking positions respectively, the front end of the two clamping plates 3 is outwardly opened or inwardly closed to release or clamp the bag opening.

[0032] Specifically, the front end of the fixing seat 2 is provided with a U-shaped notch 2-1 in the middle, and the upper and lower surfaces of the U-shaped notch 2-1 are respectively provided with arc-shaped upper and lower pressing plates 6 and 7. The inner circle of the upper and lower pressing plates 6 and 7 protrudes from the U-shaped notch 2-1, thereby forming a bayonet. In order to facilitate the annular outer edge of the bag opening to smoothly enter the bayonet, the inner side of the free end of the upper and lower pressing plates 6 and 7 is provided with a chamfer, and the lower surface and the upper surface are respectively provided with slopes, thereby expanding the size of the two entrances of the bayonet, facilitating the bag hanging operation.

[0033] A strip-shaped through groove 2-2 is arranged on the center line of the fixing seat 2, and the lever 5 is arranged in the strip-shaped through groove 2-2, thereby realizing sliding along the center line of the fixing seat 2. The two ends of the strip-shaped through groove 2-2 correspond to the two locking positions. When the lever 5 is located at one end of the strip-shaped through groove 2-2 close to the bayonet, the two connecting rods 4 are located on the same straight line, and the two clamping plates 3 are inwardly closed. When the lever 5 is located at the other end of the strip-shaped through groove 2-2, the included angle between the two connecting rods 4 is obtuse, and the two clamping plates are outwardly opened.

[0034] In order to ensure that the lever 5 can stably stay at the two locking positions, the bottom plate 8 is arranged below the strip-shaped through groove 2-2 and is installed on the bottom of the fixing seat 2. The upper surface of the bottom plate 8 is provided with a hemispherical limiting groove 8-1 at the positions corresponding to the two locking positions. The bottom of the lever 5 is elastically provided with a limiting protrusion 5-1 matched with the limiting groove 8-1. When the lever 5 moves to the position, the limiting protrusion 5-1 is clamped into the limiting groove 8-1, so that the lever 5 can still stay at the two locking positions under the action of a smaller external force, thereby reducing the risk of micro-motion of the lever caused by machine vibration and improving the clamping stability.

[0035] The lower surface of the fixed seat 2 is provided with a mounting groove 2-3, the clamping plate 3 is located in the mounting groove 2-3, the connecting rod 4 is located on the upper surface of the fixed seat 2, the connecting rod 4 and the clamping plate 3 are hinged through a pin shaft penetrating the fixed seat 2, and the area corresponding to the pin shaft of the fixed seat 2 is provided with a waist-shaped hole corresponding to the movement track of the pin shaft. In order to further improve the stability of the clamping movement, the first limiting plate 9 mounted on the fixed seat 2 is arranged below the clamping plate 3, the downward inclination of the clamping plate 3 is limited through the first limiting plate 9, the second limiting plate 10 fixed on the fixed seat 2 is arranged above the connecting rod 4, the upward inclination of the connecting rod 4 is limited through the second limiting plate 10, so that each movement component can be kept on the horizontal plane, and the stability of the clamping movement is improved.

[0036] The outer periphery of the rotary disc 1 is provided with an upper bagging station and a lower bagging station, considering that the clamping state of the bayonet needs to be changed only at the upper bagging station and the lower bagging station, therefore, in order to simplify the structure and save cost, the first bag pushing mechanism and the second bag pushing mechanism are respectively hung above the upper bagging station and the lower bagging station, the first bag pushing mechanism and the second bag pushing mechanism are preferably a structure combined with a cylinder and a push plate, the first bag pushing mechanism pushes the push rod to move towards the locking position of the closed clamping plate, the second bag pushing mechanism pushes the push rod to move towards the locking position of the closed clamping plate, so as to realize the change of the clamping state, and it is not necessary to set the structure for pushing the push rod to act on each bayonet assembly.

[0037] The utility model discloses a bag mouth is hung by bayonet, utilizes the fixed seat to bear the soft bag, and is provided with the clamping plate that can open and close simultaneously, and the bag mouth is limited through the clamping plate, prevents the bag mouth from separating from the bayonet, thereby realizing the hanging bag and the bag clamping function through different components, improves the clamping stability of the bag mouth, in addition, the opening and closing of two clamping plates can be realized through the movement of the same push rod driven by external force, which improves the synchronism and simplifies the structure, when being applied to the filling table, the bag pushing mechanism for pushing the push rod to move is set at the position that needs to be set, and the equipment cost is reduced.

[0038] The above-described specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above-described specific embodiments are only for the specific embodiments of the utility model and are not used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A bayonet assembly characterized by: The fixing seat is provided with a U-shaped notch at the front end, and the upper and lower surfaces of the U-shaped notch are respectively provided with arc-shaped upper and lower pressing plates, the inner circle of the upper and lower pressing plates is protruded from the U-shaped notch, and the U-shaped notch forms the clamping opening.

2. A bayonet assembly according to claim 1, wherein: The free end of the upper and lower pressing plates is provided with a chamfer on the inner side, and the lower surface and the upper surface are respectively provided with a slope.

3. A bayonet assembly according to claim 2, wherein: The fixing seat is provided with a strip-shaped through groove on the center line of the clamping opening, the toggle lever is arranged in the strip-shaped through groove, and the two ends of the strip-shaped through groove correspond to the two locking positions.

4. A bayonet assembly according to claim 1, wherein: The bottom plate is arranged on the bottom of the fixing seat below the strip-shaped through groove, the upper surface of the bottom plate is provided with a limiting groove at the positions corresponding to the two locking positions, and the bottom of the toggle lever is elastically provided with a limiting convex part matched with the limiting groove.

5. A bayonet assembly according to claim 4, wherein: The lower surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below.

6. A bayonet assembly according to claim 1, wherein: The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below.

7. A bayonet assembly according to claim 1, wherein: The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below.

8. A rotary filling station characterized in that: The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below. The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below. The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below. The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below. The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below. The upper surface of the fixing seat is provided with a mounting groove, the clamping plate is arranged in the mounting groove, and a first limiting plate is arranged on the fixing seat below.

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