Swing control device for welding piece of sterile pipe connecting machine

Abstract

The utility model relates to a welding piece control swing device of a sterile pipe connecting machine, which comprises a fixed arm, a bearing and a knife rest left-right limiting cam, the knife rest left-right limiting cam is mounted on a main transmission shaft and positioned on one side of an up-down swing cam, and an annular groove is arranged on the peripheral surface of the knife rest left-right limiting cam. The lower end of the fixed arm is provided with a rotatable first bearing through a vertical shaft, and the first bearing is located in an annular groove of the left-right limiting cam of the tool rest in a rolling mode. The device has the advantages that the design is ingenious, the structure is reasonable and compact, the fixed arm is additionally arranged at the lower end of the heating knife rest, the knife rest left-right limiting cam is additionally arranged on the main transmission shaft, and the lower end of the fixed arm always moves in the knife rest left-right limiting cam through the first bearing, so that the heating knife rest is limited to swing left and right, a welding piece is ensured not to shift, and the welding effect is good.

Description

Technical Field

[0001] The utility model relates to the field of aseptic pipe connection devices, and specifically designs a control swing device for a welding sheet of an aseptic pipe connection machine. Background Art

[0002] The aseptic pipe connection machine is a medical device that connects two PVC pipes in a contaminated environment (i.e. non-sterile environment) and keeps the connectors aseptic. It is indispensable in the fields of blood collection and supply, clinical surgery, biopharmaceuticals, etc.

[0003] The welding plate of the aseptic pipe connection machine now swings up and down, driven by a cam, and its rotating shaft is connected to the heating knife holder at the rear. Due to the long rotating arm of the heating knife holder, the slight gap of the rotating shaft will cause the welding plate to swing left and right, affecting the welding effect. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes a control swing device for a welding piece of a sterile pipe connection machine, which has an ingenious design, a reasonable and compact structure, and the welding piece will not swing left and right.

[0005] The technical solution of this utility model:

[0006] The aseptic take-over machine welding piece control swing device, the aseptic take-over machine includes a frame, a welding piece, a heating knife holder, a main transmission shaft, an up and down swing cam, and a rotating shaft. The main transmission shaft is rotatably installed inside the frame, the rear end of the heating knife holder is rotatably installed on the frame, the welding piece is installed on the heating knife holder, and the rotating shaft is laterally installed at the lower end of the heating knife holder. The up and down swing cams are installed on the main transmission shaft, and the outer end of the rotating shaft rolls in the cam path of the up and down swing cams. The lower end of the heating knife holder is also equipped with a sterile take-over machine welding piece control swing device, the sterile take-over machine welding piece control swing device includes a fixed arm, a bearing, and left and right limiting cams of the knife holder. The left and right limiting cams of the knife holder are installed on the main transmission shaft and are located on one side of the up and down swing cams. The outer peripheral surface of the left and right limiting cams of the knife holder is provided with an annular groove, and the lower end of the heating knife holder is fixedly installed with a fixed arm, and a rotatable first bearing is installed at the lower end of the fixed arm through a vertical shaft, and the first bearing rolls in the annular groove of the left and right limiting cams of the knife holder.

[0007] The upper end of the heating knife holder is designed with a strip groove for placing the welding sheet, and the rear end of the heating knife holder is designed with an L-shaped connecting piece, and the rear end of the L-shaped connection is rotatably installed on the frame; the upper end of the fixed arm is fixed under the heating knife holder, and the lower end of the fixed arm is vertically installed with a vertical shaft, and the lower end of the vertical shaft is rotatably installed with a first bearing.

[0008] The cam path is designed with a fan-shaped closed-loop path groove on one side of the up and down swing cam; one end of the rotating shaft is horizontally fixed to the lower end of the heating knife holder, and the other end of the rotating shaft is rotatably installed with a second bearing, and the second bearing is rollingly located in the fan-shaped closed-loop path groove.

[0009] The utility model has the advantages of ingenious design and reasonable and compact structure. A fixed arm is added to the lower end of the heating knife holder, and a left and right limiting cam of the knife holder is added on the main transmission shaft. The lower end of the fixed arm always moves in the left and right limiting cams of the knife holder through a first bearing, thereby limiting the left and right swing of the heating knife holder, ensuring that the welding piece does not deviate and the welding effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The front side of the utility model is shown Figure 1 .

[0011] Figure 2 The front side of the utility model is shown Figure 2 .

[0012] Figure 3 It is a rear schematic diagram of the utility model.

[0013] Figure 4 It is a partial schematic diagram of the connection between the heating knife holder of the utility model and the up and down swing cam on the main transmission shaft.

[0014] Figure 5 It is a schematic diagram of the connection between the heating tool holder of the utility model and the left and right limiting cams of the tool holder on the main transmission shaft.

[0015] Figure 6 It is a schematic diagram of the aseptic pipe connection machine of the utility model. DETAILED DESCRIPTION

[0016] Refer to the attached Figure 1-6 , the aseptic take-over machine welding piece control swing device, the aseptic take-over machine includes a frame 1, a welding piece 2, a heating knife holder 3, a main transmission shaft 4, an up and down swing cam 5, and a rotating shaft 6. The main transmission shaft 4 is rotatably installed inside the frame 1, the rear end of the heating knife holder 3 is rotatably installed on the frame 1, the welding piece 2 is installed on the heating knife holder 3, the rotating shaft 6 is horizontally installed at the lower end of the heating knife holder 3, the up and down swing cam 5 is installed on the main transmission shaft 4, the outer end of the rotating shaft 6 is rollingly located in the cam path 51 of the up and down swing cam 5, and the lower end of the heating knife holder 3 is also installed There is a sterile take-over machine welding plate control swing device, which includes a fixed arm 7, a first bearing, and a left and right limiting cam 8 for the tool holder. The left and right limiting cam 8 for the tool holder is installed on the main transmission shaft 4 and is located on one side of the upper and lower swing cam 5. The outer peripheral surface of the left and right limiting cam 8 of the tool holder is provided with an annular groove 81. The lower end of the heating tool holder 3 is fixedly installed with a fixed arm 7, and the lower end of the fixed arm 7 is installed with a rotatable first bearing 9 through a vertical shaft 71. The first bearing 9 rolls in the annular groove 81 of the left and right limiting cam 8 of the tool holder.

[0017] The upper end of the heating knife holder 3 is designed with a strip groove for placing the welding plate 2, and the rear end of the heating knife holder 3 is designed with an L-shaped connecting piece 31, and the rear end of the L-shaped connecting piece 31 is rotatably mounted on the frame 1; the upper end of the fixed arm 7 is fixed to the bottom of the heating knife holder 3, and the lower end of the fixed arm 7 is vertically installed with a vertical shaft 71, and the lower end of the vertical shaft 71 is rotatably installed with a first bearing 9.

[0018] The cam path 51 is designed with a fan-shaped closed-loop path groove on one side of the up and down swing cam 5; one end of the rotating shaft 6 is horizontally fixed to the lower end of the heating knife holder 3, and the other end of the rotating shaft 6 is rotatably installed with a second bearing 61, and the second bearing 61 is rollingly located in the fan-shaped closed-loop path groove.

[0019] When the utility model is used, the main transmission shaft of the aseptic take-over machine 10 rotates, and the up and down swing cam rotates with it, and the cam path in the up and down swing cam acts on the second bearing, and the second bearing is rotatably installed on the rotating shaft, and the rotating shaft is installed below the heating knife holder, and the up and down swing cam drives the heating knife holder to rotate about the center on the rear side rotation installation frame, and the heating knife holder moves up and down with the welding piece above, which is the prior art, and the utility model is simply described; the utility model is designed to add a fixed arm below the heating knife holder, and the first bearing is installed at the lower end of the fixed arm, and the first bearing is confined in the annular groove of the left and right limiting cams of the knife holder. During the synchronous rotation of the left and right limiting cams of the knife holder and the up and down swing cams, the annular grooves of the left and right limiting cams of the knife holder limit the first bearing, and the first bearing will not shake in the horizontal left and right directions, thereby causing the fixed arm to act on the heating knife holder fixedly connected above, so that the heating knife holder will not shake horizontally left and right, ensuring high welding accuracy and good effect.

Claims

1. A sterile pipe receiving machine welding plate control swing device, the sterile pipe receiving machine includes a frame, a welding plate, a heating knife holder, a main transmission shaft, an up and down swing cam, and a rotating shaft. The main transmission shaft is rotatably installed inside the frame, the rear end of the heating knife holder is rotatably installed on the frame, the welding plate is installed on the heating knife holder, the rotating shaft is horizontally installed at the lower end of the heating knife holder, and the up and down swing cam is installed on the main transmission shaft. The outer end of the rotating shaft rolls in the cam path of the up and down swing cam, and is characterized in that: A sterile take-over machine welding plate control swing device is also installed at the lower end of the heating tool holder. The sterile take-over machine welding plate control swing device includes a fixed arm, a bearing, and left and right limiting cams of the tool holder. The left and right limiting cams of the tool holder are installed on the main transmission shaft and are located on one side of the upper and lower swing cams. The outer peripheral surface of the left and right limiting cams of the tool holder is provided with an annular groove. A fixed arm is fixedly installed at the lower end of the heating tool holder. A rotatable first bearing is installed at the lower end of the fixed arm through a vertical shaft, and the first bearing rolls in the annular groove of the left and right limiting cams of the tool holder.

2. The aseptic pipe connection machine welding piece control swing device according to claim 1, characterized in that: The upper end of the heating knife holder is designed with a strip groove for placing the welding sheet, and the rear end of the heating knife holder is designed with an L-shaped connecting piece, and the rear end of the L-shaped connection is rotatably installed on the frame; the upper end of the fixed arm is fixed under the heating knife holder, and the lower end of the fixed arm is vertically installed with a vertical shaft, and the lower end of the vertical shaft is rotatably installed with a first bearing.

3. The aseptic pipe connection machine welding piece control swing device according to claim 1, characterized in that: The cam path is designed with a fan-shaped closed-loop path groove on one side of the up and down swing cam; one end of the rotating shaft is horizontally fixed to the lower end of the heating knife holder, and the other end of the rotating shaft is rotatably installed with a second bearing, and the second bearing is rollingly located in the fan-shaped closed-loop path groove.

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