Rotation driving device suitable for rod rotating machine

Abstract

The utility model provides a rotation driving device suitable for a rod rotating machine, which comprises a fixed bottom plate, an arc-shaped edge is arranged on one side of the fixed bottom plate facing an injection tube star plate, and a driving wheel and a driven wheel are respectively arranged at two ends of the arc-shaped edge on the upper end face of the fixed bottom plate. An idle wheel is arranged at any position between the driving wheel and the driven wheel on the upper end surface of the fixed bottom plate; a belt is sleeved on the outer sides of the driving wheel, the driven wheel and the idle wheel; and the driving wheel is connected with a rotary driving device. According to the rotation driving device suitable for the rod rotating machine, the belt assembly is adopted to replace a transmission rubber wheel, the belt with the radian consistent with the outer contour of a star disc rotates along with the outer side of an injection pipe, the contact time of the belt and the injection pipe is prolonged, and therefore it is guaranteed that the injection pipe and a push rod are screwed in place.

Description

Technical Field

[0001] The utility model relates to a rotation driving device, in particular to a rotation driving device suitable for a rotary rod machine. Background Art

[0002] The rod rotating machine is a device used to assemble the injection tube and the push rod of the prefilled needle. The assembly here is to achieve the matching of the push rod thread and the threaded hole of the injection tube rubber plug. The assembly method is generally to rotate the injection tube below the push rod while moving the push rod from top to bottom. The current method of controlling the rotation of the injection tube is to set a rubber wheel on the side of the injection tube star disk. When the push rod moves downward, the injection tube contacts the rotating rubber wheel and rotates, thereby realizing the screwing connection between the injection tube and the push rod. The disadvantage of this method is that the contact time between the rubber wheel and the injection tube is short, and it is easy to screw it into place. Utility Model Content

[0003] The utility model aims to overcome the existing defects and provide a rotating driving device suitable for a rotary rod machine, so as to solve the problem that the short contact time between the rubber wheel and the injection tube easily leads to the injection tube and the rotary rod not being screwed into place.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A rotating driving device suitable for a rotary rod machine comprises a fixed base plate, wherein the side of the fixed base plate facing the injection tube star disk is arranged as an arc-shaped edge, the upper end surface of the fixed base plate is respectively provided with a driving wheel and a driven wheel at both ends of the arc-shaped edge, the upper end surface of the fixed base plate is provided with an idler wheel at any position between the driving wheel and the driven wheel, and a belt is commonly sleeved on the outer sides of the driving wheel, the driven wheel and the idler wheel; the driving wheel is connected to a rotating driving device.

[0006] Furthermore, an adjustable tensioning device is provided on the upper end surface of the fixed base plate inside the area surrounded by the belt.

[0007] Furthermore, the adjustable tensioning device includes a swing arm, one end of which is rotatably connected to the fixed base plate via a swing arm shaft, and the other end of the swing arm is connected to a tensioning wheel; the fixed base plate is provided with an arc groove with the swing arm shaft as the center below the swing arm, and a positioning pin is penetrated through the swing arm, and the lower end of the positioning pin passes through the arc groove and is threadedly connected with a positioning nut.

[0008] Furthermore, the rotary drive device is a servo motor, and the servo motor is transmission-connected to the driving wheel via a screw bearing assembly.

[0009] Furthermore, a cover shell is connected to the upper end of the fixed bottom plate, and the cover shell shields the upper side of the fixed bottom plate and the outer side surface of the fixed bottom plate facing away from the injection tube star disk.

[0010] The utility model discloses a rotating driving device suitable for a rotary rod machine, which adopts a belt assembly to replace a driving rubber wheel, and utilizes a belt whose arc is consistent with the outer contour of a star disk to rotate along the outer side of an injection tube, thereby prolonging the contact time between the belt and the injection tube, thereby ensuring that the injection tube and the push rod are screwed into place. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the structure of the utility model (excluding the cover);

[0013] Figure 2 It is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0015] like Figure 1 , 2 As shown, a rotating driving device suitable for a rotary rod machine includes a fixed base plate 1, and the side of the fixed base plate 1 facing the injection tube star plate A is set as an arc edge, and the upper end surface of the fixed base plate 1 is respectively provided with a driving wheel 3 and a driven wheel 4 at both ends of the arc edge, and the upper end surface of the fixed base plate 1 is provided with an idler wheel 5 at any position between the driving wheel 3 and the driven wheel 4, and a belt 6 is commonly sleeved on the outer sides of the driving wheel 3, the driven wheel 4 and the idler wheel 5; the driving wheel 3 is connected to a rotating driving device.

[0016] The rotary drive device is a servo motor 7 , which is transmission-connected to the driving wheel 3 via a screw bearing assembly 8 .

[0017] Working principle:

[0018] The rotating driving device is arranged on the side of the syringe star disk A, and the servo motor 7 is started, and the belt 6 is driven to rotate by controlling the rotation of the driving wheel 3. When the syringe is transferred to between the rotating driving device and the syringe star disk A, the outer side surface of the lower end of the syringe contacts with the belt 6, and the friction force is used to rotate the syringe, thereby completing the screwing and docking of the syringe and the push rod; compared with the traditional rubber wheel, the belt 6 prolongs the contact time, that is, prolongs the stroke for driving the syringe to rotate, thereby ensuring that the syringe and the push rod are screwed into place.

[0019] It should be noted that Figure 1 The shape of the belt shown in the figure is the state after the device is installed beside the injection tube star disk, that is, Figure 2 In the state shown, if the device is in an independent state, the belt tension is in a normal straight state.

[0020] An adjustable tensioning device is provided on the upper end surface of the fixed base plate 1 inside the area surrounded by the belt 6. The adjustable tensioning device includes a swing arm 9, one end of which is rotatably connected to the fixed base plate 1 through a swing arm shaft 10, and the other end of the swing arm 9 is connected to a tensioning wheel 11; the fixed base plate 1 is provided with an arc groove 12 with the swing arm shaft 10 as the center of the circle below the swing arm 9, and a positioning pin 13 is provided through the swing arm 9, and the lower end of the positioning pin 13 passes through the arc groove 12 and is threadedly connected with a positioning nut (not shown in the figure). The belt 6 will become loose as the use time increases. At this time, the positioning nut is loosened and the swing arm 9 is rotated to re-tighten the belt 6, and then the positioning nut is tightened.

[0021] The upper end of the fixed base plate 1 is connected with a cover 14, which shields the upper side of the fixed base plate 1 and the outer side of the fixed base plate 1 facing away from the injection tube star plate A. The cover 14 can play a role in dustproofing and protecting various components on the fixed base plate 1.

[0022] The utility model discloses a rotating driving device suitable for a rotary rod machine, which adopts a belt assembly to replace a driving rubber wheel, and utilizes a belt whose arc is consistent with the outer contour of a star disk to rotate along the outer side of an injection tube, thereby prolonging the contact time between the belt and the injection tube, thereby ensuring that the injection tube and the push rod are screwed into place.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rotating driving device suitable for a rotary rod machine, Features: It comprises a fixed bottom plate, the side of the fixed bottom plate facing the injection tube star plate is set as an arc edge, the upper end surface of the fixed bottom plate is respectively provided with a driving wheel and a driven wheel at both ends of the arc edge, the upper end surface of the fixed bottom plate is provided with an idler wheel at any position between the driving wheel and the driven wheel, and the driving wheel, the driven wheel and the idler wheel are collectively sleeved with a belt outside; The driving wheel is connected with a rotation driving device.

2. A rotating driving device suitable for a rotary rod machine according to claim 1, Features: An adjustable tensioning device is arranged on the upper end surface of the fixed bottom plate inside the area surrounded by the belt.

3. A rotating driving device suitable for a rotary rod machine according to claim 2, Features: The adjustable tensioning device comprises a swing arm, one end of which is rotatably connected to the fixed base plate via a swing arm rotating shaft, and the other end of which is connected to a tensioning wheel; The fixed base plate is provided with an arc groove with the swing arm shaft as the center below the swing arm, and a positioning pin is penetrated through the swing arm. The lower end of the positioning pin passes through the arc groove and is threadedly connected with a positioning nut.

4. A rotating driving device suitable for a rotary rod machine according to claim 1, Features: The rotary drive device is a servo motor, and the servo motor is transmission-connected to the driving wheel via a screw bearing assembly.

5. A rotating driving device suitable for a rotary rod machine according to claim 1, Features: The upper end of the fixed bottom plate is connected with a cover shell, and the cover shell shields the upper side of the fixed bottom plate and the outer side surface of the fixed bottom plate facing away from the injection tube star disk.

Images