A claw-type bottle clamping device with positioning function

Abstract

The present invention discloses a clamping bottle clamping device with a positioning function, which includes a base at the lower end and a clamping claw at the upper end, the clamping claw includes a rotatable outer sleeve vertically arranged in a bearing seat; the upper end of the outer sleeve is coaxially connected to a driving wheel; a pull rod that can be lifted up and down is arranged in the outer sleeve; the lower end of the pull rod extends from the outer sleeve, and a pressure head is arranged at the lower end of the pull rod; the lower end of the outer sleeve is annularly hinged with a clamping claw arm; a guide groove is arranged on the clamping claw arm; a cross bar is arranged on the pull rod; a pin is arranged on the cross bar; and the pin is movably arranged in the guide groove. The present invention combines the advantages of the base type and the clamping claw type, and uses the bottom type for positioning and the pressure head only needs to be positioned to ensure the coaxiality of the medicine bottle. At the same time, the medicine bottle is clamped by the clamping claw to provide rotational power to rotate the medicine bottle. This bottle clamping method solves the problem that the base type has the power at the bottom, which is inconvenient to install and maintain, and the problem that the clamping claw type has poor coaxiality, centrifugal force and bubbles are generated when the bottle is rotated.

Description

Technical Field

[0001] The invention relates to the pharmaceutical machinery industry, and in particular to a clamping claw type bottle clamping device with a positioning function. Background Art

[0002] In the process of drug production, light inspection is an essential quality inspection link, so the light inspection machine is a key equipment in the pharmaceutical industry. There are two types of bottle clamps in the light inspection machines currently available on the market. One is a base-type. When this method works, a pressure rod on the top of the base is required to press the drug tightly on the base. When rotating the bottle, the base is driven, and the base drives the drug to rotate through friction. The other is a claw type, which clamps the medicine bottle with the claw and drives the claw to rotate the medicine bottle. Both bottle clamping methods have certain advantages and disadvantages. When using the base type, the advantage of the bottle rotating type is that the center line of the medicine bottle is well coaxial with the axis of rotation, and fewer bubbles are generated; the disadvantage is that the drive needs to be installed under the base, and the installation and maintenance of the power device are difficult; the advantage of the claw type is that the power is installed on the top, which is convenient for maintenance, and there is no base, which is convenient for maintenance and cleaning; the disadvantage is that when clamping the medicine bottle, it is easy to clamp it crooked, making the medicine bottle not coaxial with the axis of rotation, generating a large centrifugal force and a large number of bubbles; there are also some improved types in the industry, such as adding a pressure head in the claw, While the gripper grabs the medicine bottle, the pressure head presses down on it. However, there is only one meshing point between the inspection plate of the light inspection machine and the bottle feeding device (the tangent point between the inspection plate of the light inspection machine and the bottle feeding device). Only at the moment when the medicine bottle reaches the meshing point, the pressure head presses down and the gripper clamps. But in fact, it is difficult to complete the whole set of actions of the pressure head pressing down and the gripper clamping the bottle at one time point. In actual work, the time point of clamping the medicine bottle is either advanced or delayed, which causes most of the medicine bottles to be clamped crookedly, causing a large number of bubbles and a large centrifugal force to be generated in the medicine liquid when the medicine bottle rotates. Summary of the invention

[0003] The present invention aims at the above problems and provides a new medicine clamping method for medicine bottle clamping of light inspection machine, which can ensure the coaxiality of the center line of the medicine and the rotation axis when the medicine rotates, reduce bubbles and improve the inspection quality; and its driving method is located above the inspection disk, which is convenient for installation and maintenance.

[0004] The technical solution proposed by the present invention to solve these problems is a clamping claw type bottle clamping device with positioning function, which includes a base at the lower end and a clamping claw at the upper end, the clamping claw includes a rotatable outer sleeve vertically arranged in the bearing seat; the upper end of the outer sleeve is coaxially connected to the driving wheel; a pull rod which can be lifted up and down is arranged in the outer sleeve; the lower end of the pull rod extends from the outer sleeve, and the lower end of the pull rod is provided with a pressure head; the lower end of the outer sleeve is hinged with a clamping claw arm in a ring shape; a guide groove is provided on the clamping claw arm; a cross bar is provided on the pull rod; a pin is provided on the cross bar; the pin is movably arranged in the guide groove.

[0005] A further improvement of the present invention is that the guide groove includes an upper guide groove and a lower guide groove which are connected to each other to form a V-shape; the angle between the upper guide groove and the lower guide groove is an obtuse angle; the upper guide groove is arranged parallel to the pull rod; the lower guide groove is arranged obliquely to the pull rod, and the lower end is arranged away from the pull rod.

[0006] A further improvement of the present invention is that a compression spring is sleeved on the pull rod; the compression spring is located in the spring cavity at the lower end of the outer sleeve; a limiting ring for limiting the movement of the compression spring is provided at the lower end of the pull rod; the limiting ring is located at the lower end of the compression spring.

[0007] According to a further improvement of the present invention, a guide cylinder is provided at the lower end of the pull rod; a buffer spring is provided in the guide cylinder; the pressure head is provided at the lower end of the guide cylinder; and the upper end of the pressure head abuts against the buffer spring.

[0008] According to a further improvement of the present invention, a conical guide groove is provided at the bottom of the pressure head.

[0009] According to a further improvement of the present invention, the base includes a hollow shaft and a bottle spinner seat arranged on the hollow shaft through a bearing.

[0010] According to a further improvement of the present invention, a clamping head is provided at the lower end of the clamping jaw arm.

[0011] According to a further improvement of the present invention, the driving wheel is a synchronous pulley.

[0012] Compared with the existing technology, the advantages of this solution are:

[0013] 1. It combines the advantages of the base type and the clamp type. The bottom type is used for positioning and the pressure head only needs to be positioned to ensure the coaxiality of the medicine bottle. At the same time, the clamp is used to clamp the medicine bottle and provide rotational power to rotate the medicine bottle. This bottle clamping method solves the problem that the base type has the power at the bottom, which is inconvenient to install and maintain, and the problem that the clamp type has poor coaxiality, centrifugal force and bubbles generated by rotating the bottle.

[0014] 2. After the medicine bottle enters the meshing point, it leaves the original supporting track and enters the base, rotating with the clamp and the base. Therefore, the clamp has enough time to position and clamp, and there will be no phenomenon that the effective positioning cannot be performed after leaving the meshing point. At the same time, the designed clamp will not clamp before the pressure head presses the medicine bottle and completes the positioning. Therefore, the phenomenon that the medicine bottle is not completely positioned and then clamped will not occur, causing the medicine bottle to be skewed. This structure ensures that the medicine bottle is coaxial with the center line of rotation, and no bubbles or bottle throwing will be generated when the bottle is rotated (when the rotation is not concentric, centrifugal force is generated, resulting in the clamp failing to clamp the medicine bottle and the medicine bottle being thrown out), improving the inspection quality.

[0015] 3. When used for medicine bottles of the same type but different specifications, as long as the heads are not much different, there is no need to replace the clamping head and the pressing head, only the bottle screw base needs to be replaced; for example, when used for ampoule bottles, since the heads are not much different, there is no need to replace the clamping head and the pressing head. Only the bottle screw base needs to be replaced, and the specification change is fast and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0018] Figure 3 It is a schematic diagram of the enlarged structure of the upper end of the clamping jaw of the present invention;

[0019] Figure 4 It is a schematic diagram of the enlarged structure of the base of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the present invention after clamping the medicine bottle.

[0021] In the figure: 1. driving wheel; 2. bearing seat; 3. pull rod; 31. cross bar; 32. pin shaft; 4. outer sleeve; 41. spring chamber; 42. mounting sleeve; 5. compression spring; 6. clamping claw arm; 7. chuck; 8. pressure head; 9. hollow shaft; 10. bottle spinner seat; 11. medicine bottle; 12. guide cylinder; 13. buffer spring; 14. limit ring; 61. guide groove; 611. upper guide groove; 612. lower guide groove. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0023] like Figure 1-5 As shown, the specific structure of the present invention is: a clamping claw type bottle clamping device with positioning function, which includes a base at the lower end and a clamping claw at the upper end, the clamping claw includes a rotatable outer sleeve 4 vertically arranged in the bearing seat 2; the upper end of the outer sleeve 4 is coaxially connected to the driving wheel 1; a pull rod 3 that can be lifted up and down is arranged in the outer sleeve 4; the lower end of the pull rod 3 extends from the outer sleeve 4, and a pressure head 8 is arranged at the lower end of the pull rod 3; a clamping claw arm 6 is hinged in a ring shape at the lower end of the outer sleeve 4; a guide groove 61 is arranged on the clamping claw arm 6; a cross bar 31 is arranged on the pull rod 3; a pin 32 is arranged on the cross bar 31; the pin 32 is movably arranged in the guide groove 61.

[0024] In a preferred embodiment, the guide groove 61 includes an upper guide groove 611 and a lower guide groove 612 which are connected to each other to form a V-shape; the angle between the upper guide groove 611 and the lower guide groove 612 is an obtuse angle; the upper guide groove 611 is arranged parallel to the pull rod 3; the lower guide groove 612 is arranged obliquely to the pull rod 3, and the lower end is arranged away from the pull rod 3.

[0025] In a preferred embodiment, a compression spring 5 is sleeved on the pull rod 3; the compression spring 5 is located in the spring cavity 41 at the lower end of the outer sleeve 4; a limit ring 14 for limiting the movement of the compression spring 5 is provided at the lower end of the pull rod 3; the limit ring 14 is located at the lower end of the compression spring 5.

[0026] In a preferred embodiment, a guide cylinder 12 is provided at the lower end of the pull rod 3 ; a buffer spring 13 is provided in the guide cylinder 12 ; the pressure head 8 is provided at the lower end of the guide cylinder 12 ; and the upper end of the pressure head 8 abuts against the buffer spring 13 .

[0027] In a preferred embodiment, a conical guide groove is provided at the bottom of the pressure head 8. The conical guide groove can realize automatic positioning of the upper end of the medicine bottle, so that the medicine bottle and the rotating axis of the clamping jaw are coaxial.

[0028] In a preferred embodiment, the base includes a hollow shaft 9 and a bottle spinner seat 10 disposed on the hollow shaft 9 via a bearing.

[0029] In a preferred embodiment, a clamp 7 is provided at the lower end of the clamp arm 6. The clamp 7 can be made of silicone material, which can position the medicine bottle without damaging the medicine bottle.

[0030] In a preferred embodiment, the driving wheel 1 is a synchronous belt wheel, which drives the outer sleeve 4 to rotate, thereby driving the clamping claw arm to rotate.

[0031] The working principle of the present invention is as follows:

[0032] A base is installed on the detection chassis, which does not need to provide power for rotating the bottle. It only rotates with the medicine bottle when rotating the bottle to play a supporting role. A clamp with a telescopic pressure head is set on the large plate. A synchronous pulley is installed on the clamp. The clamp is driven by the synchronous belt to drive the medicine bottle to rotate. The clamp does not clamp the medicine bottle in the first distance before the telescopic pressure head presses down. The clamp starts to clamp the medicine bottle after the pressure head has pressed the medicine bottle and the positioning is completed. The detection chassis and the large plate are rigidly connected so that the corresponding bottle rotating base and clamp are always coaxial.

[0033] The present invention is a clamping claw type bottle clamping device with positioning function, such as Figure 1 As shown, the whole device includes a base and a clamping claw. The base is composed of a bottle spinner seat 10, a bearing, and a hollow shaft 9. The bearing is installed on the hollow shaft 9, and the bottle spinner seat 10 is installed on the outer ring of the bearing. The bottle spinner seat 10 can rotate freely.

[0034] The clamping jaw is composed of a clamping jaw arm 6, a clamping head, a pressing head 8, a cross bar 31, a pull rod 3, an outer sleeve 4, a bearing seat 2, and a driving wheel 1. The bearing seat 2 is installed on the large plate, the outer sleeve 4 is installed on the bearing seat 2 through a bearing, a pin is installed on the outer sleeve 4, one end of the clamping jaw arm 6 is installed on the outer sleeve and can rotate around the pin; the railing is guided by a linear bearing installed on the outer sleeve 4 to ensure that the pull rod can only move up and down, a cross bar 31 is set at the lower end of the pull rod 3, and the pin 32 on the cross bar 31 can move in the guide groove 61 of the clamping jaw arm, and the guide groove 61 of the clamping jaw arm is composed of a vertical upper guide groove 611 and a lower guide groove 612 inclined outward, and a clamping jaw 7 with a certain elasticity (such as silicone) is installed on the clamping jaw arm; the lower end of the pull rod is fixed to the guide cylinder 12, and the pressing head 8 is installed on the guide cylinder 12, and a linear bearing is positioned between the pressing head and the guide cylinder, and a buffer spring 13 is installed between the pressing head and the guide cylinder.

[0035] Before the medicine bottle 11 enters the meshing point, the pull rod 3 drives the pressure head 8 to press downward under the action of the compression spring 5. However, when the medicine bottle 11 is required to reach the meshing point, the pressure head 8 is higher than the medicine bottle. After the medicine bottle 11 enters the meshing point, the bottom of the medicine bottle 11 enters the bottle rotating seat 10 of the base. Driven by an external force, the pull rod drives the pressure head to press downward rapidly, and the head of the medicine bottle enters the conical groove of the pressure head. The medicine bottle, the base, and the clamping device rotate together with the large plate; then the pressure head continues to press downward. Since the groove in which the pressure head contacts the medicine bottle is conical, it has a guiding The action can automatically correct the position of the medicine bottle. At this time, the pressure head and the base cooperate with each other to complete the positioning of the medicine bottle. Since the guide groove on the clamp arm is composed of a vertical section and an outward inclined groove, when the pin shaft of the cross bar moves in the vertical section of the groove, the clamp wall is not clamped, so the clamp wall does not move at this time; then the pull rod continues to press down, the buffer spring on the pressure head is compressed, the height of the pressure head remains unchanged, and when the pin shaft on the cross bar enters the inclined groove section of the clamp arm, the clamp arm begins to clamp inward until the medicine bottle is completely clamped.

[0036] The process of loosening the medicine bottle is opposite to that of clamping. When loosening, the clamping claw arm is driven by the movable cross bar pin to loosen first, and then the pressure head is loosened.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A clamping-claw bottle clamping device with positioning function, comprising a base at the lower end and a clamping claw at the upper end, characterized in that: The clamping jaw comprises a rotatable outer sleeve (4) vertically arranged in the bearing seat (2); the upper end of the outer sleeve (4) is coaxially connected to the driving wheel (1); a pull rod (3) which can be lifted up and down is arranged in the outer sleeve (4); the lower end of the pull rod (3) extends from the outer sleeve (4), and a pressure head (8) is arranged at the lower end of the pull rod (3); a clamping jaw arm (6) is hinged in an annular shape at the lower end of the outer sleeve (4); a guide groove (61) is arranged on the clamping jaw arm (6); a cross bar (31) is arranged on the cross bar (31); a pin shaft (32) is arranged on the cross bar (31); the pin shaft (32) is movably arranged in the guide groove (61); The guide groove (61) comprises an upper guide groove (611) and a lower guide groove (612) which are connected to each other to form a V-shape; the angle between the upper guide groove (611) and the lower guide groove (612) is an obtuse angle; the upper guide groove (611) is arranged parallel to the pull rod (3); the lower guide groove (612) is arranged obliquely to the pull rod (3), and the lower end is arranged away from the pull rod (3); The pull rod (3) is sleeved with a compression spring (5); the compression spring (5) is located in a spring cavity (41) at the lower end of the outer sleeve (4); a limiting ring (14) for limiting the movement of the compression spring (5) is provided at the lower end of the pull rod (3); the limiting ring (14) is located at the lower end of the compression spring (5); A guide cylinder (12) is disposed at the lower end of the pull rod (3); a buffer spring (13) is disposed inside the guide cylinder (12); the pressure head (8) is disposed at the lower end of the guide cylinder (12); the upper end of the pressure head (8) abuts against the buffer spring (13); The bottom of the pressure head (8) is provided with a conical guide groove; The bottom of the medicine bottle (11) enters the bottle rotating seat (10) of the base, and the pull rod (3) is driven by an external force to drive the pressure head (8) downward, and the head of the medicine bottle 11 enters the guide groove of the pressure head 8. At this time, the pressure head (8) and the base cooperate with each other to complete the positioning of the medicine bottle (11); because the guide groove (61) on the clamping claw arm (6) is composed of a vertical section and an outwardly inclined groove, when the pin shaft (32) of the cross bar (31) moves in the vertical section of the groove, the clamping claw wall is not clamped, so the clamping claw wall does not move at this time; then the pull rod (3) continues to press down, the buffer spring (13) on the pressure head (8) is compressed, the height of the pressure head (8) remains unchanged, and when the pin shaft (32) on the cross bar (31) enters the inclined groove section of the clamping claw arm (6), the clamping claw arm (6) begins to clamp inward until the medicine bottle (11) is completely clamped.

2. A claw-type bottle clamping device with positioning function according to claim 1, characterized in that: The base comprises a hollow shaft (9) and a bottle spinner seat (10) arranged on the hollow shaft (9) via a bearing.

3. The bottle clamping device with a positioning function according to claim 1, characterized in that: A clamping head (7) is provided at the lower end of the clamping claw arm (6).

4. The bottle clamping device with a positioning function according to claim 1, characterized in that: The driving wheel (1) is a synchronous pulley.

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