CN109606770B - Three-petal type automatic grasping cap screwing head - Google Patents
Three-petal type automatic grasping cap screwing head Download PDFInfo
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- CN109606770B CN109606770B CN201811469080.XA CN201811469080A CN109606770B CN 109606770 B CN109606770 B CN 109606770B CN 201811469080 A CN201811469080 A CN 201811469080A CN 109606770 B CN109606770 B CN 109606770B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
- B65B7/2835—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers applying and rotating preformed threaded caps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
- B67B3/00—Closing bottles, jars or similar containers by applying caps
- B67B3/20—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps
Abstract
The invention provides a three-petal type automatic grasping screw cap which is connected with a rotating mechanism and used for screwing different types of plastic caps, and the screw cap comprises: the positioning device comprises a taper sleeve, a tooth sliding sleeve, a positioning body and a sliding body; the positioning body is fixedly arranged at the bottom of the tooth sliding sleeve; the tooth sliding sleeve comprises: three-lobed teeth; the three pieces of teeth are annularly arranged and slide in the taper sleeve in a matching manner through the positioning body; the sliding body penetrates through the positioning body and is arranged between the three-petal teeth; the plastic cover drives the three-flap teeth to slide up and down in the taper sleeve through the sliding body; the plastic cover is grasped by the tri-lobed teeth when the tri-lobed teeth slide upward; when the three-petal teeth slide downwards, the three-petal teeth loosen the plastic cover under the action of the gravitational potential energy of the three-petal teeth and the sliding body; the cap screwing head provided by the invention can be compatible with various plastic caps, and the plastic caps can be grasped or loosened under the self-driving action, so that the manufacturing cost is saved.
Description
Technical Field
The invention relates to a capping head of packaging mechanical equipment, in particular to a three-flap type automatic grasping capping head.
Background
In the chemical industry and the food industry, along with the progress of science and technology, the packaging machinery is developed in a new and advanced way, and the automatic cap screwing machine for plastic caps is updated continuously. However, both the rotary capping machine and the linear capping machine use the capping head to screw the plastic cap on the container mouth, so the capping head is a vital component in the capping device, and a single variety of capping head cannot meet the requirements of various plastic caps.
The existing rotary capping machine generally drives a long rod in the middle of a capping head by a complex set of cam mechanism to open or tighten a clamping jaw of the capping head, so that the capping head releases or grasps a plastic cap, thereby increasing the manufacturing cost of the rotary capping machine virtually.
At present, a simple cap screwing head, namely a single-body part, is mostly used for a linear cap screwing machine, the plastic cap is screwed at a container opening by means of friction force between wear-resistant materials (such as polyurethane and the like) attached to an inner conical surface and a fillet at the top end of the plastic cap, so that the wear-resistant materials are required to be frequently replaced, and the production cost is increased. And for the plastic cover with small round angle at the top end of the cover or crisp sharp corner, the simple cap screwing head has no way to complete the cap screwing task, so the compatibility of the simple cap screwing head is poor.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a three-petal type automatic grasping cap screwing head.
The technical scheme provided by the invention is as follows: a three-petal automatic grasping cap screwing head which is connected with a rotating mechanism and used for screwing different types of plastic caps (9),
the spiral cover head includes: a taper sleeve (6), a tooth sliding sleeve (1), a positioning body (2) and a sliding body (3);
the positioning body (2) is fixedly arranged at the bottom of the tooth sliding sleeve (1);
the tooth sliding sleeve (1) comprises: three-lobed teeth; the three pieces of teeth are annularly arranged and slide in the taper sleeve (6) in a matching way through the positioning body (2);
the sliding body (3) penetrates through the positioning body (2) and is arranged between the three-petal teeth;
the plastic cover (9) drives the three-petal teeth to slide up and down in the taper sleeve (6) through the sliding body (3);
-said plastic cap (9) is gripped by said tri-cusp teeth when said tri-cusp teeth slide upwards; when the three-petal teeth slide downwards, the three-petal teeth loosen the plastic cover (9) under the action of the gravitational potential energy of the three-petal teeth and the sliding body (3).
Preferably, the taper sleeve (6) is of a trapezoidal structure and comprises: a rotating shaft section (6-1), an outer smooth cylindrical surface section (6-2) and an outer stepped conical surface section (6-3) which are coaxially and fixedly connected from small to large in sequence;
the rotating shaft section (6-1) is fixedly connected with the rotating mechanism.
Preferably, the slider (3) comprises: an upper layer annular cylindrical surface section (3-1), an outer conical surface section (3-2), a lower layer cylindrical surface section (3-3) and a circular plate (3-4) which are coaxially and sequentially and fixedly connected;
the upper-layer annular cylindrical surface section (3-1) and the outer conical surface section (3-2) form a trapezoid structure with a large upper part and a small lower part, the trapezoid structure with the large upper part and the small lower part is arranged in an inner cavity defined by the three-petal teeth in a matched mode, and the trapezoid structure and the inner cavity defined by the three-petal teeth are in a shape imitating surface mutually, so that the tooth sliding sleeve (1) is driven to slide up and down, and the sliding body (3) is prevented from sliding in the tooth sliding sleeve (1);
the lower cylindrical surface section (3-3) penetrates through the positioning body (2);
the circular plates (3-4) are attached to the cover surface of the plastic cover (9) and used for driving the tooth sliding sleeve (1) to slide up and down and flattening the inclined plastic cover (9).
Preferably, the three-petal teeth arranged annularly are in a trapezoidal structure and respectively comprise: a middle-layer smooth cylindrical surface section (1-1), a middle-layer stepped conical surface section (1-2) and a lower-layer conical surface section (1-3) which are coaxially and fixedly connected from small to large in sequence;
the radial outer side of the middle-layer smooth cylindrical surface section (1-1) is annularly provided with a semicircular bulge; the middle-layer smooth cylindrical surface section (1-1) is arranged in the outer-layer smooth cylindrical surface section (6-2) in a sliding manner through the semicircular bulge;
the middle-layer step-shaped conical surface section (1-2) is arranged on the inner side of the outer-layer step-shaped conical surface section (6-3) in a matched mode and used for driving the lower-layer conical surface section (1-3) to tightly grasp the plastic cover (9) under the action of the two conical surfaces when the three-petal teeth move upwards;
the upper end of the middle-layer smooth cylindrical surface section (1-1) is provided with an annular baffle; the trapezoid structure with the large upper part and the small lower part is matched and arranged on the inner side of the middle-layer smooth cylindrical surface section (1-1), and the ring-shaped baffle plate drives the three-petal teeth to move up and down; when the sliding body (3) moves downwards, the three-petal teeth are driven to loosen the plastic cover (9).
Preferably, the positioning body (2) comprises: annular plate and 3 connecting plates;
the 3 connecting plates are uniformly fixed on the outer side of the annular plate;
3 cutting grooves are formed among the three-piece teeth, and the connecting plate is arranged in the cutting grooves in a matching manner;
the annular plate is arranged in the three-petal type tooth and is fixedly connected with the bottom of the taper sleeve (6) through the connecting plate.
Preferably, the method further comprises the following steps: 3 set screws (4);
the wall of the outer smooth cylindrical surface section (6-2) of the taper sleeve (6) is provided with 3 first threaded holes;
the wall of the middle-layer smooth cylindrical surface section (1-1) of each tooth is provided with an elongated slot;
and the cylindrical sections of the positioning screws (4) respectively penetrate through the first threaded holes in a matched mode, enter the elongated slots of the teeth and are used for guiding and positioning the teeth in the taper sleeves (6).
Preferably, the method further comprises the following steps: 3 inner hexagonal screws (7) and a gasket (8) matched with the inner hexagonal screws (7);
the outer edge of the outer-layer stepped conical surface section (6-3) of the taper sleeve (6) is provided with 3 second threaded holes;
the connecting plates are respectively provided with a connecting hole;
the inner hexagonal screw (7) enters the second threaded hole through the connecting hole and is used for fastening the taper sleeve (6) and the positioning body (2).
Preferably, the method further comprises the following steps: a spring (5);
an annular groove is arranged on the upper layer annular cylindrical surface section (3-1) of the sliding body (3);
a reset bulge is fixedly arranged at the top end inside the outer smooth cylindrical surface section (6-2) of the taper sleeve (6);
one end of the spring (5) is sleeved on the reset protrusion, and the other end of the spring is arranged in the annular groove;
when the spring (5) is in an extension state, the three-petal teeth of the tooth sliding sleeve (1) are in a downward extension state; when the spring (5) is in a compressed state, the three-petal teeth of the tooth sliding sleeve (1) are tightened and closed.
Preferably, the spring (5) is a return spring.
Preferably, the inner cavity surface of the lower conical surface section (1-3) of the tooth sliding sleeve (1) is provided with screwing teeth;
the screwing teeth are matched with the vertical grains on the outer cylindrical surface of the plastic cover (9) and used for screwing the plastic cover (9).
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) the invention provides a three-petal type automatic grasping screw cap which is connected with a rotating mechanism and used for screwing different types of plastic caps, and the screw cap comprises: the positioning device comprises a taper sleeve, a tooth sliding sleeve, a positioning body and a sliding body; the positioning body is fixedly arranged at the bottom of the tooth sliding sleeve; the tooth sliding sleeve comprises: three-lobed teeth; the three pieces of teeth are annularly arranged and slide in the taper sleeve in a matching way through the positioning body; the sliding body penetrates through the positioning body and is arranged between the three-petal teeth; the plastic cover drives the three-flap teeth to slide up and down in the taper sleeve through the sliding body; the plastic cover is grasped by the tri-lobed teeth when the tri-lobed teeth slide upward; when the three-petal teeth slide downwards, the three-petal teeth loosen the plastic cover under the action of the gravitational potential energy of the three-petal teeth and the sliding body; the cap screwing head provided by the invention can be compatible with various plastic caps, and the plastic caps can be grasped or loosened under the self-driving action, so that the manufacturing cost is saved.
(2) The screw cap head provided by the invention has the characteristics of simple structure, low cost, wide adaptability, strong compatibility and the like.
(3) The screw cap head provided by the invention does not need external power and can automatically drive to grasp or release the plastic cap.
(4) According to the technical scheme provided by the invention, the three-petal type tooth sliding sleeve has great compatibility and accurate centering performance on the cover, the quality of the screw cover is greatly improved, and the production requirement is met.
Drawings
FIG. 1 is a schematic view of the grasping screw-cap head of the present invention;
FIG. 2 is a schematic view of the attachment of the grasping screw-cap head of the present invention;
FIG. 3 is a schematic view of the tooth sliding sleeve of the present invention;
fig. 4 is a schematic structural view of a three-petal type tooth sliding sleeve of the invention;
FIG. 5 is a schematic view of the structure of FIG. 4 in the direction B;
FIG. 6 is a schematic view of a positioning body of the present invention;
wherein, 1-tooth sliding sleeve; 1-1-middle layer smooth cylindrical surface section; 1-2-a middle-layer step-shaped conical surface section; 1-3-lower conical surface section; 2-a positioning body; 3-a sliding body; 3-1-upper layer annular cylindrical surface section; 3-2-outer conical surface section; 3-3-lower layer cylindrical surface section; 3-4-round plate; 4-a set screw; 5-a spring; 6-taper sleeve; 6-1-rotating shaft section; 6-2-outer layer smooth cylindrical surface section; 6-3-outer layer step type conical surface section; 7-socket head cap screw; 8-a gasket; 9-plastic cover.
Detailed Description
For a better understanding of the present invention, the technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the present invention provides a three-piece type automatic grasping screw-cap head, which is connected to a rotating mechanism for screwing different types of plastic caps 9, and comprises: the tooth positioning device comprises a taper sleeve 6, a tooth sliding sleeve 1, a positioning body 2 and a sliding body 3; the positioning body 2 is fixedly arranged at the bottom of the tooth sliding sleeve 1; the tooth sliding sleeve 1 comprises: three-lobed teeth; the three pieces of teeth are annularly arranged and slide in the taper sleeve 6 in a matching way through the positioning body 2; the sliding body 3 penetrates through the positioning body 2 and is arranged between the three-petal teeth; the plastic cover 9 drives the three-flap teeth to slide up and down in the taper sleeve 6 through the sliding body 3; when the tri-lobed teeth slide upwards, they grip the plastic cap 9; when the tri-cuspid teeth slide downwards, the tri-cuspid teeth loosen the plastic cover 9 under the action of the gravitational potential energy of the tri-cuspid teeth and the sliding body 3.
The slider 3 includes: an upper layer annular cylindrical surface section 3-1, an outer conical surface section 3-2, a lower layer cylindrical surface section 3-3 and a circular plate 3-4 which are coaxially and sequentially and fixedly connected; the upper-layer annular cylindrical surface section 3-1 and the outer conical surface section 3-2 form a trapezoid structure with a large upper part and a small lower part, the trapezoid structure with the large upper part and the small lower part is matched and arranged in an inner cavity defined by the three-petal teeth, and the trapezoid structure and the inner cavity defined by the three-petal teeth are in a shape of a contour surface, so that the sliding body 3 is prevented from sliding in the tooth sliding sleeve 1, and the sliding body 3 is used for driving the tooth sliding sleeve 1 to slide up and down; the lower cylindrical surface section 3-3 penetrates through the positioning body 2; the circular plates 3-4 are connected to the top side of the plastic cover 9 for pressing the inclined plastic cover 9 flat.
Annularly arranged three-petal teeth are of a trapezoidal structure and respectively comprise: a middle-layer smooth cylindrical section 1-1, a middle-layer stepped conical section 1-2 and a lower-layer conical section 1-3 which are coaxially and fixedly connected in sequence from small to large; the radial outer side of the middle-layer smooth cylindrical surface section 1-1 is annularly provided with a semicircular bulge; the middle-layer smooth cylindrical surface section 1-1 is arranged in the outer-layer smooth cylindrical surface section 6-2 in a sliding manner through the semicircular bulge; the middle-layer stepped conical surface section 1-2 is arranged on the inner side of the outer-layer stepped conical surface section 6-3 in a matched mode and used for driving the lower-layer conical surface section 1-3 to tightly grasp the plastic cover 9 under the action of the two conical surfaces when the three-petal teeth move upwards; the upper end of the middle-layer smooth cylindrical surface section 1-1 is provided with an annular baffle; the trapezoid structure with the large upper part and the small lower part is arranged on the inner side of the smooth cylindrical surface section 1-1 of the middle layer in a matching way, and the annular baffle plate drives the three-petal teeth to move up and down; when the sliding body 3 moves downwards, the three-piece teeth are driven to loosen the plastic cover 9.
The positioning body 2 includes: annular plate and 3 connecting plates; the 3 connecting plates are uniformly fixed on the outer side of the annular plate; 3 cutting grooves are formed among the three-piece teeth, and the connecting plate is arranged in the cutting grooves in a matching manner; the annular plate is arranged in the three-petal type tooth and is fixedly connected with the bottom of the taper sleeve 6 through the connecting plate.
Further comprising: 3 set screws 4; the wall of the outer smooth cylindrical surface section 6-2 of the taper sleeve 6 is provided with 3 first threaded holes; elongated slots are respectively arranged on the wall of the middle-layer smooth cylindrical surface section 1-1 of each tooth; the cylindrical sections of the positioning screws 4 respectively penetrate through the first threaded holes in a matched mode, enter the elongated slots of the teeth, and are used for guiding and positioning the teeth in the taper sleeves 6.
Further comprising: 3 inner hexagonal screws 7 and a gasket 8 matched with the inner hexagonal screws 7; the outer edge of the outer stepped conical surface section 6-3 of the taper sleeve 6 is provided with 3 second threaded holes; the connecting plates are respectively provided with a connecting hole; the inner hexagon screw 7 enters the second threaded hole through the connecting hole and is used for fastening the taper sleeve 6 and the positioning body 2.
Further comprising: a spring 5; an annular groove is arranged on the upper layer annular cylindrical surface section 3-1 of the sliding body 3; a reset bulge is fixedly arranged at the top end inside the outer smooth cylindrical surface section 6-2 of the taper sleeve 6; one end of the spring 5 is sleeved on the reset protrusion, and the other end of the spring is arranged in the annular groove; when the spring 5 is in a free extension state, the three-petal teeth of the tooth sliding sleeve 1 are in a downward extension state; when the spring 5 is in a compressed state, the three-petal teeth of the tooth sliding sleeve 1 are tightened and closed.
The spring 5 is a return spring.
The inner cavity surface of the lower conical surface section 1-3 of the tooth sliding sleeve 1 is provided with screwing teeth matched with the vertical grains on the outer cylindrical surface of the plastic cover 9; the screwing teeth serve to screw the plastic cover 9.
Strip rubber is respectively stuck on the inner side of each tooth, is used for increasing the friction force between the cap screwing head and the bottle cap 9, and plays a certain role in buffering.
In particular, it is possible to describe,
as shown in fig. 1 to 6, the present embodiment provides a simple and low-cost three-piece automatic grasping and screwing head, which can be used in both rotary-type screwing machine and linear-type screwing machine, does not require a driving source, can grasp or release the three-piece tooth sliding sleeve by driving the three-piece tooth sliding sleeve by the cap itself, and has great compatibility and accurate alignment property for the cap.
The three-petal automatic grasping cap screwing head provided by the embodiment comprises a taper sleeve 6 connected with a rotating shaft of a cap screwing machine, wherein a three-petal tooth sliding sleeve 1 is arranged inside the taper sleeve 6, a sliding body 3 is arranged in the middle of the tooth sliding sleeve 1, a spring 5 is arranged in an annular groove at the upper end of the sliding body 3, and the spring is a return spring; the lower end of the taper sleeve 6 is fixedly connected with the positioning body 2 through 3 screws, and the positioning body 2 is just clamped in 3 cutting grooves at the lower end of the tooth sliding sleeve 1; the excircle of the taper sleeve 6 is fixedly connected with 3 positioning screws 4 through threads.
A positioning clamping groove is formed in the circular shaft section at the upper end of the taper sleeve 6, and the square shaft section is used for transmitting torque and is conveniently connected with a cap screwing machine or other rotating mechanisms; the lower end face and the outer circle of the taper sleeve 6 are uniformly provided with 3 screw holes for connecting the positioning body 2 and the positioning screws 4; the top surface of the inner cavity of the taper sleeve 6 is provided with a cylindrical bulge for positioning the upper end of the return spring 5; the upper section of the inner cavity of the taper sleeve 6 is a smooth cylindrical surface, the lower section of the inner cavity of the taper sleeve is a stepped conical surface, and the stepped conical surface is used for downward stretching, opening and upward contracting and closing of the three-petal type tooth sliding sleeve, namely the upper section of the cylindrical surface is used for the upward and downward sliding of a semicircular bulge of an excircle at the upper end of the tooth sliding sleeve, and the lower section of the stepped conical surface is used for opening and closing of the three-petal tooth sliding sleeve 1.
The tooth sliding sleeve is cut into three petals after the integral processing is finished, and the functions are two: the integral assembly of the screw cap head is convenient; secondly, the cover can be grasped and loosened; the excircle of the upper section of the tooth sliding sleeve is provided with a semicircular bulge which is used for sliding up and down in the taper sleeve; the excircle of the upper section of the sliding sleeve is also provided with 3 elongated slots, and the cylindrical sections of the 3 positioning screws play a role in guiding and positioning in the elongated slots, namely, each tooth sliding sleeve can only slide up and down and cannot deflect left and right; the excircle of the middle section of the tooth sliding sleeve 1 is a stepped conical surface and corresponds to the conical surface of the inner 6 of the conical sleeve; the inner cavity of the upper section of the tooth sliding sleeve 1 is a profile surface of the shape of the sliding body 3 and is driven by the sliding body 3 to move up and down; the inner cavity of the middle section of the tooth sliding sleeve 1 contains a positioning body 2 and the lower end 3 of a sliding body; the inner cavity at the lower end of the tooth sliding sleeve 1 is provided with teeth made of different plastic covers 9, and the tooth sliding sleeve is used for matching with the teeth of the cover to screw the cover on the container opening.
The upper end of the sliding body is provided with an annular groove for positioning the return spring 5; the upper end of the sliding body 3 is provided with an annular surface, and the middle section of the sliding body is provided with an external conical surface for pushing the tooth sliding sleeve to move up and down; the shape of the upper section of the sliding body and the inner cavity of the tooth sliding sleeve are profile surfaces, so that the upper section of the sliding body and the inner cavity of the tooth sliding sleeve can be accurately aligned with each other; the lower end of the sliding body is a plane and is used for bearing the thrust given to the sliding body by the upper surface of the cover.
The positioning body 2 is special in shape, the middle of the positioning body is annular, three connecting plates protrude out of the annular outer side, the annular part is clamped into an inner cavity at the lower end of the taper sleeve, the three connecting plates are fixed on the lower end face of the taper sleeve, and the lower end of the sliding body extends out of a middle hole of the sliding body.
The positioning screw 4 is a special screw, the nut part is provided with an opening of a tightening tool, the thread part is used for fixing the screw on the taper sleeve, and the cylindrical section is used for guiding and positioning the tooth sliding sleeve when moving.
The working principle of the three-petal type automatic grasping cap screwing head provided by the embodiment is as follows: before the cap is screwed, the cap head is under the action of the reset spring, the three-petal tooth sliding sleeve is in a downward extending state, and the sliding body also droops to the lowest position. When the cap screwing head moves downwards to screw the cap, the upper surface of the plastic cap is firstly contacted with the lower end plane of the sliding body, the cap screwing head continues to move downwards, the upper surface of the plastic cap provides upward thrust for the sliding body, which is equivalent to that the sliding body compresses the return spring upwards and drives the tooth sliding sleeve to move upwards, and under the action of the stepped conical surface, the three-petal tooth sliding sleeve is contracted and closed, so that the cap is automatically clamped tightly.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (7)
1. The three-petal automatic grasping screw cap is characterized in that the screw cap is connected with a rotating mechanism and used for screwing different types of plastic caps (9),
the spiral cover head includes: a taper sleeve (6), a tooth sliding sleeve (1), a positioning body (2) and a sliding body (3);
the positioning body (2) is fixedly arranged at the bottom of the tooth sliding sleeve (1);
the tooth sliding sleeve (1) comprises: three-lobed teeth; the three pieces of teeth are annularly arranged and slide in the taper sleeve (6) in a matching way through the positioning body (2);
the sliding body (3) penetrates through the positioning body (2) and is arranged between the three-petal teeth;
the plastic cover (9) drives the three-petal teeth to slide up and down in the taper sleeve (6) through the sliding body (3);
-said plastic cap (9) is gripped by said tri-cusp teeth when said tri-cusp teeth slide upwards; when the three-petal teeth slide downwards, the three-petal teeth loosen the plastic cover (9) under the action of the gravitational potential energy of the three-petal teeth and the sliding body (3);
taper sleeve (6) are trapezium structure, include: a rotating shaft section (6-1), an outer smooth cylindrical surface section (6-2) and an outer stepped conical surface section (6-3) which are coaxially and fixedly connected from small to large in sequence;
the rotating shaft section (6-1) is fixedly connected with the rotating mechanism;
the slider (3) comprises: an upper layer annular cylindrical surface section (3-1), an outer conical surface section (3-2), a lower layer cylindrical surface section (3-3) and a circular plate (3-4) which are coaxially and sequentially and fixedly connected;
the upper-layer annular cylindrical surface section (3-1) and the outer conical surface section (3-2) form a trapezoid structure with a large upper part and a small lower part, the trapezoid structure with the large upper part and the small lower part is arranged in an inner cavity defined by the three-petal teeth in a matched mode, and the trapezoid structure and the inner cavity defined by the three-petal teeth are in a shape imitating surface mutually, so that the tooth sliding sleeve (1) is driven to slide up and down, and the sliding body (3) is prevented from sliding in the tooth sliding sleeve (1);
the lower cylindrical surface section (3-3) penetrates through the positioning body (2);
the circular plates (3-4) are attached to the cover surface of the plastic cover (9) and used for driving the tooth sliding sleeve (1) to slide up and down and flattening the inclined plastic cover (9);
annularly arranged three-petal teeth are of a trapezoidal structure and respectively comprise: a middle-layer smooth cylindrical surface section (1-1), a middle-layer stepped conical surface section (1-2) and a lower-layer conical surface section (1-3) which are coaxially and fixedly connected from small to large in sequence;
the radial outer side of the middle-layer smooth cylindrical surface section (1-1) is annularly provided with a semicircular bulge; the middle-layer smooth cylindrical surface section (1-1) is arranged in the outer-layer smooth cylindrical surface section (6-2) in a sliding manner through the semicircular bulge;
the middle-layer step-shaped conical surface section (1-2) is arranged on the inner side of the outer-layer step-shaped conical surface section (6-3) in a matched mode and used for driving the lower-layer conical surface section (1-3) to tightly grasp the plastic cover (9) under the action of the two conical surfaces when the three-petal teeth move upwards;
the upper end of the middle-layer smooth cylindrical surface section (1-1) is provided with an annular baffle; the trapezoid structure with the large upper part and the small lower part is matched and arranged on the inner side of the middle-layer smooth cylindrical surface section (1-1), and the ring-shaped baffle plate drives the three-petal teeth to move up and down; when the sliding body (3) moves downwards, the three-petal teeth are driven to loosen the plastic cover (9).
2. The self-gripping capping head of claim 1,
the positioning body (2) comprises: annular plate and 3 connecting plates;
the 3 connecting plates are uniformly fixed on the outer side of the annular plate;
3 cutting grooves are formed among the three-piece teeth, and the connecting plate is arranged in the cutting grooves in a matching manner;
the annular plate is arranged in the three-petal type tooth and is fixedly connected with the bottom of the taper sleeve (6) through the connecting plate.
3. The self-gripping capping head of claim 1,
further comprising: 3 set screws (4);
the wall of the outer smooth cylindrical surface section (6-2) of the taper sleeve (6) is provided with 3 first threaded holes;
the wall of the middle-layer smooth cylindrical surface section (1-1) of each tooth is provided with an elongated slot;
and the cylindrical sections of the positioning screws (4) respectively penetrate through the first threaded holes in a matched mode, enter the elongated slots of the teeth and are used for guiding and positioning the teeth in the taper sleeves (6).
4. The self-gripping capping head of claim 2,
further comprising: 3 inner hexagonal screws (7) and a gasket (8) matched with the inner hexagonal screws (7);
the outer edge of the outer-layer stepped conical surface section (6-3) of the taper sleeve (6) is provided with 3 second threaded holes;
the connecting plates are respectively provided with a connecting hole;
the inner hexagonal screw (7) enters the second threaded hole through the connecting hole and is used for fastening the taper sleeve (6) and the positioning body (2).
5. The self-gripping capping head of claim 1,
further comprising: a spring (5);
an annular groove is arranged on the upper layer annular cylindrical surface section (3-1) of the sliding body (3);
a reset bulge is fixedly arranged at the top end inside the outer smooth cylindrical surface section (6-2) of the taper sleeve (6);
one end of the spring (5) is sleeved on the reset protrusion, and the other end of the spring is arranged in the annular groove;
when the spring (5) is in an extension state, the three-petal teeth of the tooth sliding sleeve (1) are in a downward extension state; when the spring (5) is in a compressed state, the three-petal teeth of the tooth sliding sleeve (1) are tightened and closed.
6. The self-gripping capping head of claim 5,
the spring (5) is a return spring.
7. The self-gripping capping head of claim 1,
the inner cavity surface of the lower conical surface section (1-3) of the tooth sliding sleeve (1) is provided with screwing teeth;
the screwing teeth are matched with the vertical grains on the outer cylindrical surface of the plastic cover (9) and used for screwing the plastic cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469080.XA CN109606770B (en) | 2018-12-04 | 2018-12-04 | Three-petal type automatic grasping cap screwing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469080.XA CN109606770B (en) | 2018-12-04 | 2018-12-04 | Three-petal type automatic grasping cap screwing head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109606770A CN109606770A (en) | 2019-04-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111302285A (en) * | 2020-03-09 | 2020-06-19 | 英攀东 | A add lid machine for food glass jar |
| CN114249285A (en) * | 2020-09-24 | 2022-03-29 | 烟台恒鑫化工科技有限公司 | Device for opening and screwing square barrel cover in one direction |
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| US3524294A (en) * | 1967-10-20 | 1970-08-18 | American Flange & Mfg | Bottle capping equipment and method |
| EP0521581A1 (en) * | 1991-07-04 | 1993-01-07 | Shell Internationale Researchmaatschappij B.V. | Automatic device for gas cylinder cap placing and prescrewing, in particular for liquefied petroleum gas cylinders |
| CN2460446Y (en) * | 2001-01-19 | 2001-11-21 | 广州达意隆包装机械有限公司 | Screw-on mechanism of cap screw-on machine |
| CN101121496A (en) * | 2006-08-07 | 2008-02-13 | 阿罗尔股份有限公司 | Device for gripping caps for a capping machine |
| CN101772455A (en) * | 2007-08-02 | 2010-07-07 | 建筑自动机械制造A.C.M.A.股份公司 | A gripping apparatus for capping assemblies in container packaging machines |
| CN102838065A (en) * | 2012-08-20 | 2012-12-26 | 江苏星A包装机械集团有限公司 | Cap-spinning mould capable of adapting to various bottle caps |
| JP2017071416A (en) * | 2015-10-07 | 2017-04-13 | 澁谷工業株式会社 | Capping head |
-
2018
- 2018-12-04 CN CN201811469080.XA patent/CN109606770B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3524294A (en) * | 1967-10-20 | 1970-08-18 | American Flange & Mfg | Bottle capping equipment and method |
| EP0521581A1 (en) * | 1991-07-04 | 1993-01-07 | Shell Internationale Researchmaatschappij B.V. | Automatic device for gas cylinder cap placing and prescrewing, in particular for liquefied petroleum gas cylinders |
| CN2460446Y (en) * | 2001-01-19 | 2001-11-21 | 广州达意隆包装机械有限公司 | Screw-on mechanism of cap screw-on machine |
| CN101121496A (en) * | 2006-08-07 | 2008-02-13 | 阿罗尔股份有限公司 | Device for gripping caps for a capping machine |
| CN101772455A (en) * | 2007-08-02 | 2010-07-07 | 建筑自动机械制造A.C.M.A.股份公司 | A gripping apparatus for capping assemblies in container packaging machines |
| CN102838065A (en) * | 2012-08-20 | 2012-12-26 | 江苏星A包装机械集团有限公司 | Cap-spinning mould capable of adapting to various bottle caps |
| JP2017071416A (en) * | 2015-10-07 | 2017-04-13 | 澁谷工業株式会社 | Capping head |
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| CN109606770A (en) | 2019-04-12 |
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