JPH05503666A - Grasping bell for bottles or similar - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Grasping bell for bottles or similar explanation The present invention includes a sleeve-like housing, the housing having a bottle or a bottle on one side thereof. It has a receiving opening for the similar material, said receiving opening having a conical shape towards the inside. an axially extending control surface further disposed on the other side within said housing; an actuating element movable in the housing; a collet chuck guided to move in a linear direction; The resilient grasping fingers of the hook are separated from each other by a slot, and the grasping fingers are separated from each other by a slot. said control surface in response to relative axial movement between the let chuck and the housing. The gripping fingers are thus adapted to move in the radial direction, and thus the gripping fingers can be applied to the bottle from the outside. or the like.

The gripping bell is the gripping finger of the collet chuck that is integrally formed with the piston-like actuating element. In the open and closed states of the collet chuck, their free ends are exclusively conical side screens It is known (German Published Publication No. 1586012) that it causes collision. grasping fingers No additional guidance is provided for this purpose. This known grasping bell is available in many varieties. Can it be used for containers and containers, and only requires a small actuation force? , resulting in an uncontrolled deformation of the grasping fingers and a transfer of said grasping fingers, in particular to the actuating element. It has the disadvantage of being subjected to strong bending loads at points. Furthermore, the collet chuck Due to the fact that they are made of relatively rigid material, the grasping fingers are used only for short periods of time. It often gets damaged even afterwards. against the inner surface of the housing, which acts as a cylinder. A separate sealing ring is provided to seal the actuating element. disposed within the annular groove of the element.

Additionally, other prior art gripping bells are known. In the case of this gripping bell, the tightening is The sleeve is disposed within a sleeve-like housing, and one end of the sleeve is It abuts the collar of the housing in the area of the insertion opening, but the other end touches the working piston. impact, and the piston is guided by moving axially within the housing. Italian Publication No. 3819598). The sleeve curves slightly inward to open the opening. with its inner diameter reduced in case of axial compression caused by the working piston do. This known gripping bell can only be used for specially shaped bottles and containers. However, it requires a relatively large actuation force. When tightening, the sleeve must generate restoring force. Therefore, it must be made of a relatively rigid material. Therefore, its service life is limited. As the gripping bell becomes loose, the bottle will slide into the gripping bell in an uncontrolled manner. It happens that you get caught.

The object of the invention is to provide, with the aid of simple measures, a gripping bell of the type mentioned at the beginning of the text. The purpose of this invention is to significantly increase the service life of the collet chuck.

According to the invention, the above-mentioned problem is solved by providing a stationary guide for the collet chuck and its gripping fingers. The problem is solved by the feature that the faces are respectively arranged inside the collet chuck.

The collet chuck and its gripping fingers are not only on its outside but also on its inside. By means of a guide surface that remains stationary with the housing and slides on the collet chuck. , limited deformation, if necessary, by the fact that it is precisely guided; between opening and closing repositioning without causing uncontrolled bending or buckling of the grasping fingers occurs during the movement of Furthermore, due to the precise guiding style, substantially lower stiffness materials can be used.

As a result, the service life of the gripping bell of the present invention is substantially extended.

Hands forming internal and external guide surfaces for the K1 knot chuck and its grasping fingers There are several types of laws. The external guide surface is formed on the housing. some special Advantageous measures are described in claims 2 to 6. With these structural designs, Precise guidance on all sides is achieved and the collet chuck is moved to the closed position. and only the end sections of the grasping fingers are bent by the control surface. Internal and external plans The remaining part of the collet chuck that is received between the inner surfaces must maintain its cylindrical shape. It only has the function of transmitting motion to the end of the grasping fingers by means of a sliding sleeve. child In this regard, it is preferable to round the control surface into a concave shape as set forth in claim 7. suitable, and thus particularly when the gripping finger ends are rounded to a complementary convex shape. , the gripping finger ends can be moved almost exclusively in the radial direction.

Additionally, there are various methods of holding internal guide surfaces for collet chucks. Iku Some particularly advantageous measures are set out in claims 8 to 14. By this A particularly firm fixation of the guideway and a compact and economical construction style are achieved. . Additionally, these embodiments provide additional fixation and centering techniques for the bottle head and and a method for preventing contact between the collet chuck and the collet chuck that increases wear.

Furthermore, the rigid bridge portion inside the collet chuck is described in claims 15 to 19. The butt for the pressure spring that moves the collet chuck to the open position as shown Work as a department. Thus, a compact sealed structure is possible and the collet chuck There is no need for the block itself to generate resilience.

As described in claims 16 to 18, the collet chuck is an individual component. This part can be configured with a base-like connecting section and a piston. The actuating element may be separated from the actuating element or may be removably connected thereto.

However, in the case of the gripping bell of the present invention, the collet chuck is a flexible material with good sliding properties. Due to the fact that it can be made from flexible plastic material, the collet cha A particularly advantageous combination of a lock, a piston-like actuating element and a sealing element of said piston-like element A monolithic design can be provided. The monolithic design is dependent on claim 19. 25. By collet chuck, piston and sealing means The formed one-piece unit offers particularly advantageous manufacturing costs and can be To enable easy and quick exchange of collet chucks. One piece design Therefore, the two parts subject to wear, namely the collet chuck and the sealing flange, must always be kept together. Naturally, updates are guaranteed.

Hereinafter, the present invention will be explained in detail with reference to the illustrated embodiments.

Figure 1 shows a vertical section through the gripping bell, with the closed position shown on the left and the open position shown on the right. This is a diagram.

FIG. 2 is a horizontal sectional view taken along lines A and -B in FIG. 1.

FIG. 3 is a vertical sectional view of another embodiment of the collet chuck.

The gripping bell shown in FIG. 1.2 comprises a rotationally symmetrical, sleeve-like housing 1, The housing is made of a hard plastic material with good sliding properties. The illustrated hanging The end of the housing 1, which forms the upper end in the direct use position, is formed on the housing. Closed by a cover. A central connecting pin 17 with an extending hole is located in the cover. formed in the part. A flexible hose 18 or tube is fixed to the connecting pin 17. It will be done. This hose or tube can be gripped into the gripping head of a bottling or filling machine. It functions to hold the bell. The machine is not shown in detail. On the other hand, the hole supplies compressed air to the cylindrical space 19 formed at the upper end of the housing 1. do the work. A sealed screw 1 to screw-like actuating element 4 is located within the cylindrical space 19. arranged and axially movable.

A circular receiving opening 2 is arranged at the end of the gripping bell which forms the lower end in the vertical use position shown. , the diameter of this opening is slightly larger than the diameter of the head of the bottle to be grasped (indicated by the dashed line). big. The receiving opening 2 has a centering surface that widens conically at the lower end for the bottle head. Continued on 20. The receiving opening 2 is followed at its upper end by a control surface 3 which is also It is said to be enlarged into an almost conical shape and rounded into a flute shape. Bottom in contact with control surface 3 The edges extend at an acute angle to the horizon. The upper end in contact with the control surface 3 extends vertically, It merges seamlessly with the cylindrical inner surface 9 of the housing I. Reception opening 2, heart The projecting surface 20, the control surface 3, and the inner surface 9 are arranged concentrically with the central axis of the housing 1. .

A sleeve-shaped collet chuck 5 is arranged inside the housing I. The let chuck is made of flexible plastic material and essentially has two receiving openings. It extends from the dynamic element 4.

The collet chuck is arranged to be movable in the axial direction.

The cholera chuck 5 has a horizontal base 16 at the upper end, and the base has a collet. The collet chuck is formed integrally with the chuck, and the collet chuck can be moved over a large area through this base. It contacts and impinges on the piston-shaped actuating element 4. The collet chuck 5 is the base 1 It is removably connected to the actuating element 4 by a center thread extending through the actuating element 6 .

The outer peripheral surface of the collet chuck 5 is cylindrical over almost its entire length, and the housing It moves on the inner surface 9 of the rod 1 and is guided. The outer peripheral surface of the collet chuck 5 is only at the lower end section is rounded to a convex shape corresponding to the control surface 3; When the collet chuck is opened, said outer circumferential surface terminates in the receiving opening 2. Collet The inner peripheral surface of the chuck 5 is also largely cylindrical, with a stepped section at its lower end. has a thicker portion 14 of the collet chuck, and the thicker portion is the inner side when the collet chuck is opened. extends in a partially cylindrical manner and is aligned with the receiving opening 2 . The collet chuck 5 is It has a number of axially extending slots 6, said slots being evenly distributed on the circumference. and open at its lower end, thus forming a plurality of individually movable gripping fingers 7.

The thrower 1-6 terminates at a certain distance from the base 16 of the collet chuck 5. However, its upper region is continuously cylindrical.

Inside the collet chuck 5, the disc-shaped bridge portion 1o is placed in a horizontal position and approximately at the center. placed in the area. Around this disc-shaped bridge portion 10, there are a plurality of radially extending a web 11 which extends through the slot 6 with a certain amount of play; and closely fits into an annular recess 12 formed inside the housing 1. do. Therefore, the bridge portion 10 is firmly fixed within the housing 1, and the collet It is not involved in the axial movement of the chuck 5.

At the level of the recess 12, the housing 1 is divided in a horizontal plane so that the recess 12 The upper boundary line is placed within the upper housing section Ia and the lower boundary line is located within the upper housing section Ia. portion housing section lb. Both housing sections The ring is removably screwed on by a screw thread 21. Then lower housing sexy When the section 1b is unscrewed, the bridge portion 10, the collet chuck 5 and the actuating element The children 4 can be removed individually or together from the upper housing section 1a. Ru. On the other hand, during the assembly of the gripping bell, the lower housing section 1b is unscrewed. and the actuating element 4 and collet chuck 5 are introduced into the upper housing section la. I can do something. After this, the bridge part 10 is attached to the upper housing section 1a. placed on the lower edge and, in this position, finally screwed onto the lower housing section lb. It is fixed by The bridge part 10 forms one structural unit. Hold all components together.

The lower surface of the bridge portion 10 faces the receiving opening 2, and this lower surface faces the receiving opening 2. 2 and an annular cylindrical extension 13 formed concentrically therewith. The cylinder of the extension part 13 The diameter of the shaped inner surface corresponds to the diameter of the receiving opening 2, which is the receiving opening for the grasping bottle head. limit the means by which The horizontal lower surface of the bridge part 10 is a stop for the upper surface of the bottle head. act as a means to accurately observe the desired relative position between the pin and the gripping bell. We guarantee that. The cylindrical outer surface of the extension 13 holds the collet chuck 5 and its gripping fingers 7. It is configured as a guide surface 8 for. Said outer surface is co-located with the cylindrical inner surface 9 of the housing 1. An annular guide passage is defined in the collet chuck 5, and this guide passage is brought into close contact with the collet chuck 5 or moved. Surround this collet chuck with a sufficient amount of play. This guideway In the region, the collet chuck 5 can only be subjected to tensile stress or shear stress. , bending or buckling stresses are excluded. The lower end of the guide surface 8 is smoothly connected to the inner surface 9 or the control surface 3. Extends to the point of annexation. Therefore, the short end section of the grasping fingers 7 can be It can be deformed under the influence of the control surface 3.

The pressure spring 15 abuts against the upper surface of the bridge part 10, and the upper end of the pressure spring is attached to the collet. It acts on the base 16 of the chuck 5 and the actuating element 4, respectively, and pushes the actuating element 4 upward. try to pressure. The top position is determined by a stop surface, which is the actuating element. It is formed on the child 4 and is brought into contact with the lower surface of the upper cover of the housing 1.

In this position, shown on the right side of FIG. 1, the collet chuck 5 is open and its gripping fingers 7 withdraws. In this state, the inner cylindrical surface of the extension part 13 and the inner cylindrical surface of the thick part 14 The shaped surface is aligned with the receiving opening 2. Thus, the bottle head to be gripped is free of obstruction. You can grab it and enter the bell. Functionally important elements, especially the oblique cut of the grasping fingers A gripping surface defined by a closed section can be created, for example, by a bottle cap. be well protected from possible damage. The collet chuck 5 is In the released position, with its entire outer surface, the control is rounded, similar to the inner surface 9 of the housing 1. It follows surface 3 and is not subjected to any stress.

Compressed air is supplied to the cylindrical space 19 through the hose 18 under sufficient pressure. The actuating element 4 is then applied by the pressure spring 15 together with the collet chuck 5. It moves downwards in the direction of the receiving opening 2 against the force. If you don't have a bottle, this Movement is stopped by a cam 23 formed on the upper surface of the bridge portion 10. Collet The head of the screw interconnecting the chuck 5 and the actuating element 4 contacts said cam.

The cam 23 allows maximum closing movement of the collet chuck 5 and therefore in the closed position. Determine the minimum mutual distance between the ends of the grasping fingers 7. Is this closing movement an unfavorable load? It is limited so that it does not occur on the grasping fingers. moves into the closed position under the influence of actuating element 4 and the ends of the gripping fingers protruding beyond the inner guide surface 8 are aligned with the central axis of the gripping bell. deformed on the control surface 3 so as to perform a sliding movement directed substantially radially towards Ru. During this movement, the appropriately rounded outer end section of the gripping fingers 7 or the control surface slide along. The deformation is thus limited to the end section of the grasping fingers 7.

Grasping movement occurs when the beveled sections 22 of the gripping finger ends are brought into tight contact between them. You can continue until you tighten the bottle firmly. Grasping movement of the grasping fingers is mainly based on the diameter. Due to the fact that almost all ordinary bottles and containers are Even if these have extremely thick heads, they can be easily and securely gripped. I can do it.

Similar to the collet chuck 5 shown in Fig. 1.2, the collet chuck shown in Fig. 3 5a is made of a flexible plastic material such as molded polyurethane; ．． This is to be provided in the /M housing 1 shown in Figure 2. It is also base 16 It is formed integrally with a. But in this case it is a single piece construction for the cylindrical space 9. It is configured as a complete piston. A circular metal disc 26 is inserted into the base for reinforcement. fully embedded. a circularly projecting centering shoulder 27 or a base 16 facing the grasping fingers 7; It is formed on the lower surface of a. The centering shoulder 27 is pressurized after installation in the housing 1. Center the force spring 15. Therefore, the pressure spring 15 is mounted on the base 16a or rather Impinges directly on the filter piston. However, the centering shoulder 27 is the upper surface of the bridge portion lO. The collet chuck 5a cooperates with the cam 23 formed in the Melt.

The collet chuck 5a of FIG. 3 has four axially extending, open-edged slots 6. , the slots being evenly distributed over its circumference. Therefore, this is the above requiring a bridge part 10 whose circumference comprises four radial webs 11 corresponding to the Ru.

A rotationally symmetrical sealing ridge 24 is integrated with the collet chuck 5a and the base 16a, respectively. , are formed on the upper edge of the collet chuck 5a and the lateral edge of the base 16a, respectively. Third As shown in the figure, when this soto chuck 5a is not installed, it is in a stress-free state. The sealing ridge 24 located at It projects outwardly and therefore, after being installed in the housing l, it can be placed in the desired press. The trestle abuts against the cylindrical inner wall 9 of the tzr') ring. The sealing ridge 24 has An annular groove 25 continues towards its center, which groove opens at the top in the axial direction. Ru. On the one hand, this annular groove gives the sealing flange 24 the desired elasticity and, on the other hand, A pressure medium introduced into the cylindrical space 9 acts on the sealing ridge 24 from inside, Also, it is pressed even more strongly against surface 9.

The end face of the base 16a is flat except for the annular groove 25, and the end face is the one facing away from the gripping finger 7. This end face has a lid and a stopper formed on the upper end of the housing I. and thus determine the upper or open position of the collet chuck 5a. . In order to prevent the sealing flange 24 from contacting the lid in this position, the sealing flange 24 is The upper free end terminates at a short distance from the plane of the end surface of the base 16a.

In the case of the collet chuck 5 shown in Fig. 1.2, the collet chuck 5a is The lettuce is carried out by itself, the piston 4 and the sealing ring of said piston. Achieve all the functions that can be achieved.

-U Emperor 3- Summary book In the case of a gripping bell for bottles or the like, it comprises a sleeve-like housing, said The housing has a receiving opening on one side for a bottle or the like, and in said receiving opening continues from the control surface and widens conically toward the inside of the control surface, and further extends from the control surface. An axially movable actuating element arranged in the housing on the other side, said actuating element a collet actuated by and guided in axial movement within said housing; including a chuck, and the elastic gripping fingers of the chuck are connected to each other by slots. These gripping fingers are separated in the axial direction of the collet chuck and housing. applied to move the superhuman force by said control surface in response to relative movement; Thus, the gripping fingers hold the bottle or the like from the outside, or hold the bottle or the like from the outside. to release the object - immovable guide surface (8) for the ret chuck and its gripping finger near) is arranged inside the collet chuck (5, 5a).

:Figure 1) Copy and translation of amendment) Submission (Article 184-8 of the Patent Law) July 21, 1992

Claims (1)

[Claims] 1. including a sleeve-like housing, said housing having a bottle or the like on one side thereof; The receiving opening has a receiving opening that expands inwardly into a conical shape. an axially movable control surface disposed on the other side within said housing; an actuating element actuated by said actuating element and axially within said housing; a collet chuck guided to move the collet chuck; Resilient gripping fingers are separated from each other by slots, and said gripping fingers are connected to a collet. by said control surface in response to relative axial movement between the chuck and the housing. The gripping fingers are adapted to move in a radial direction, thus allowing said gripping fingers to pick up a bottle or the like from the outside. A collet chuck (5, 5a) in a gripping bell that holds or releases a similar object. and the immovable guide surfaces (8) for their gripping fingers (7) respectively collet chucks (5, 5a) A gripping bell, characterized in that it is arranged inside. 2. The guide surface (8) is rotationally symmetrical, and the housing (1) and collet chuck The gripping bell according to claim 1, characterized in that it is arranged concentrically with (5, 5a). 3. Gripping bell according to claim 2, characterized in that the guide surface (8) is cylindrical. 4. The inner surface (9) defines part of the housing (1) and is opposite the guide surface (8). the inner surface has a cylindrical shape and is arranged concentrically with the guide surface (8). The gripping bell according to claim 3, characterized in that: 5. The collet chuck (5, 5a) has a cylindrical central area and has a guide surface (8) and a Claim characterized in that it is slidably received between the inner surface (9) of the housing (1). The gripping bell described in item 4. 6. The guide surface (8) extends to the end section of the control surface located inside the housing. The gripping bell according to any one of claims 1 to 5, characterized in that: 7. The control surface (3) is rounded in a concave shape and the ends of the gripping fingers (7) are complimentary convex. 7. The material according to any one of claims 1 to 6, characterized in that the surface shape is rounded. Grab the bell. 8. The guide surface (8) is arranged on a bridge part (10), said bridge part being an actuating element. fastened within the housing (1) between the child (4) and the receiving opening (2); The gripping bell according to any one of claims 1 to 7 9. The bridge portion (10) comprises a plurality of radially oriented webs (11), The ebb passes through the opening (6) extending in the axial direction provided in the collet chuck (5, 5a). According to claim 8, the housing (1) is engaged with the recess (12) of the housing (1). Grab bell as described. 10. that the opening is defined by an open-edged slot (6) between the grasping fingers (7); The gripping bell according to claim 9, characterized in that: 11. In the region of the recess (12) the housing extends at right angles to the central axis. The two housing parts (1a, 1b) are removably attached to each other. The gripping bell according to claim 9 or 10, characterized in that the gripping bell is connected. 12. On the side facing the receiving opening (2) the bridge part (10) has an annular extension (13) and the interior of said extension is configured as receiving means for a bottle head. The gripping bell according to any one of claims 8 to 11, characterized in that: 13. The diameter of the receiving means approximately corresponds to and is the same as the diameter of said receiving opening (2). 13. Grasp bell according to claim 12, characterized in that it is centrally arranged. 14. The grasping fingers (7) have a stepped thickened section (14) on the inside of their free ends. When the collet chuck (5) is opened, the thickened portion defines a cylindrical surface and the collet chuck (5) is opened. The cylindrical surface is preferably aligned with receiving means formed in the extension (13). The gripping bell according to claim 12 or 13. 15. Bridge part where the pressure spring (15) faces away from the receiving opening (2) (10) and the side closer to the piston-like actuating element (4). The gripping bell according to claim 1 of claims 8 to 14. 16. The collet chuck (5, 5a) has a base ( 16, 16a) according to any one of claims 1 to 15. Grab the bell. 17. The collet chuck (5, 5a) and its base (16, 16a) are integral with each other. 17. The gripping bell according to claim 16, characterized in that it is formed in a. 18. The collet chuck (5) can be attached to and removed from the actuating element (4) in the area of the base (16). 18. A gripping bell according to claim 16 or 17, characterized in that the gripping bell is connected to the main body. 19. The piston-like actuating element is moved by the base (16a) of the collet chuck (5a). A solid, rotationally symmetrical, elastic sealing line (24) is defined directly by the collet chuck ( 5a) and/or on the base (16a), said sealing rim being a prestressed stamp. Claim characterized in that it abuts the cylindrical inner surface (9) of the housing (1) in the applied state. The gripping bell according to item 17. 20. The free end of said sealing ridge (24) faces away from the gripping fingers (7). Grip according to claim 19, characterized in that it is oriented towards the side of the chuck (5a). Mibel. 21. The annular groove (25) is formed in the base (16a) and is open in the axial direction, The annular groove is characterized in that it continues towards the center with a sealing ridge (24). A gripping bell according to claim 20. 22. The sealing ridge (24) is attached to the base (16a) facing away from the grasping fingers (7). or terminates at a short distance in front of said plane. The gripping bell according to claim 21, characterized in that: 23. A metal reinforcing plate (26) is embedded in the base (16a). A gripping bell according to any one of claims 16 to 22. 24. A centering shoulder (27) for the pressure spring (15) acting on the base (16a) Claim characterized in that it is formed on the side of the base (16a) facing the gripping fingers (7). The gripping bell according to any one of items 16 to 23. 25. The collet chuck (5, 5a) can be attached to its base (16, 16) if necessary. Claims 1 to 2 characterized in that, together with a), it is made of a flexible plastic material. 4. The gripping bell according to any one of item 4.