CN113733524A

CN113733524A - Bottle base fixture

Info

Publication number: CN113733524A
Application number: CN202110958943.5A
Authority: CN
Inventors: 江山建; 董宜关; 王巍植; 曹金山
Original assignee: Demark Changxing Automation System Co ltd
Current assignee: Demark Changxing Automation System Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-12-03
Anticipated expiration: 2041-08-20
Also published as: CN113733524B

Abstract

The invention provides a bottle blank clamping mechanism, comprising: the device comprises a clamping mechanism and an opening and closing driving mechanism, wherein the opening and closing driving mechanism drives the clamping mechanism to clamp or release a bottle blank; the opening and closing driving mechanism is arranged at one end of the clamping mechanism, which is opposite to the clamping end, and drives the clamping end of the clamping mechanism to perform opening and closing actions through lifting actions; according to the invention, the opening and closing driving mechanism with the single shaft body connected with the multiple hinge units in series is arranged, the multiple hinge units are connected in series in a rotating mode from the bottom of each clip unit, the top of each clip unit can be driven to open and close synchronously through short lifting action, the structural simplification and improvement are greatly realized, meanwhile, the opening and closing action is rapid, convenient and stable, the mechanical self-locking function of the cross hinge structure is matched, the clamping in place is fully ensured, the looseness is avoided, and the technical problems that the bottle blank clamping driving mechanism in the prior art is complex in structure, the action accuracy and the stability are difficult to control and the like are solved.

Description

Bottle base fixture

Technical Field

The invention relates to the technical field of bottle blank clamping, in particular to a bottle blank clamping mechanism.

Background

A blow molding machine for producing plastic bottles generally includes a heating unit, a conveying unit, a blow molding unit, a finished product removing unit, and the like, wherein a bottle preform is heated to a predetermined temperature by the heating unit, then sent to a mold of the blow molding unit for blow molding, and then sent out from the finished product removing unit. The conveying unit needs to take down the bottle blank which is heated by the heating unit and transfer the bottle blank to the blow molding unit.

Chinese patent CN201921956107.8 discloses an embryo taking mechanism, which comprises a support, clamping components and a pressing component, wherein the clamping components are arranged on the support in a sliding manner, two groups of pressing components are symmetrically arranged on two sides of the support along the length direction of the support, the pressing component drives the clamping components to clamp bottle embryos, the pressing component comprises a pressing rod, the clamping components comprise clamping hands, and the two clamping hands are matched to clamp the bottle embryos; the pressing pieces are arranged on the outer sides of the clamping hands, are in one-to-one correspondence with the clamping hands and are in one-to-one correspondence with the pressing rods, and are arranged in a rolling manner along the length direction of the pressing rods; the compressing part is arranged on the outer side of the clamping hand.

However, in the prior art, the clamping mechanism is opened and closed by arranging the pressing mechanisms consisting of the cylinders and the pressing rods at two sides of the clamping mechanism, and the cylinders and the pressing rods need to be arranged in multiple groups, so that the whole structure is complex, the synchronism of actions at two sides is poor, the mechanism is loosened after long-term use, and the accuracy is affected; in addition, the moving stroke of the air cylinder is long and the end point position is difficult to fix during the action, so that the force is uncontrollable, the mechanism and the bottle blank are crushed by large force, or the bottle blank cannot be clamped by insufficient force.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a bottle blank clamping mechanism, which is characterized in that a single shaft body is arranged in series with an opening and closing driving mechanism of a plurality of hinge units, the opening and closing driving mechanism is connected in series from the bottom of each clamp unit in a rotating manner, the top of each clamp unit can be driven to be opened and closed synchronously through short lifting action, the structural simplification and improvement are greatly realized, meanwhile, the opening and closing action is quick and convenient and stable, the mechanical self-locking function of a cross hinge structure is matched, the clamping in place is fully ensured without looseness, and the technical problems that the bottle blank clamping driving mechanism in the prior art is complex in structure, the action accuracy and the stability are difficult to control and the like are solved.

In order to achieve the purpose, the invention provides the following technical scheme:

a preform gripper mechanism comprising: the device comprises a clamping mechanism and an opening and closing driving mechanism, wherein the opening and closing driving mechanism drives the clamping mechanism to clamp or release a bottle blank; the clamping mechanism comprises a clamp unit, the opening and closing driving mechanism is connected with the bottom of the clamp unit in a rotating mode, and the top of the clamp unit is driven to perform opening and closing actions through lifting actions.

Preferably, the clamping mechanisms are arranged in a plurality of groups, and the opening and closing driving mechanisms are connected in series from the bottoms of the clamp units to drive the clamp units to be opened and closed synchronously.

Preferably, the opening/closing drive mechanism includes: the hinge unit is arranged corresponding to the clamping mechanism, and two ends of the hinge unit are correspondingly hinged with two ends of the bottom of the clamp unit; when the middle hinge point of the hinge unit is lifted, the two ends of the bottom of the clamp unit are driven to approach or separate from each other.

Preferably, the opening/closing drive mechanism further includes: the linkage assembly is arranged along the arrangement direction of the plurality of groups of clamping mechanisms and can move up and down; the middle part of each hinge unit is hinged and installed on the linkage assembly and driven by the linkage assembly to synchronously act.

Preferably, the hinge unit includes: the hinge comprises a first hinge piece and a second hinge piece, wherein the first hinge piece and the second hinge piece are coaxially and rotatably arranged.

Preferably, the clip unit includes: the clamping device comprises a rotating shaft, a left clamping arm and a right clamping arm, wherein the rotating shaft is vertically limited, and the left clamping arm and the right clamping arm are symmetrically arranged and are respectively and rotatably arranged on the rotating shaft;

the hinge unit is located under the rotating shaft, the end part of the first hinge piece is hinged to the end part of the left clamping arm, and the end part of the second hinge piece is hinged to the end part of the right clamping arm.

Preferably, the linkage assembly includes: the linkage shafts penetrate through the clamping mechanisms, and the hinge units are hinged to the linkage shafts; and the telescopic driving end of the driving unit is fixedly connected with the linkage shaft so as to drive the linkage shaft to move up and down.

Preferably, the driving unit is fixedly mounted on at least one set of the clamping mechanisms.

Preferably, the clamping mechanism further comprises: and the clamp unit is fixedly arranged on the movable base through a rotating shaft.

Preferably, a limiting part is arranged between the two clamping arms of the clamp unit on the moving base, a contact part is arranged on the two clamping arms of the clamp unit, and when the clamp unit is closed in place, the contact part is contacted with the limiting part;

an elastic piece is connected and arranged between the two clamping arms of the clamp unit.

The invention has the beneficial effects that:

(1) according to the bottle blank clamping driving mechanism, the opening and closing driving mechanism with the single shaft body connected with the multiple hinge units in series is arranged, the clamp units are connected in series in a rotating mode from the bottom of each clamp unit, the top of each clamp unit can be driven to open and close synchronously through short lifting action, the simplification and improvement of the structure of the bottle blank clamping driving mechanism are greatly achieved, the structure is extremely compact, the cost is saved, the action stroke of the air cylinder is short, and the action is rapid, convenient and stable;

(2) the independent modular structure and the action state thereof are more simplified and stable, a plurality of installation accessories are saved, the cost is reduced, and the service life is prolonged;

(3) according to the invention, the hinge unit of the opening and closing driving mechanism is provided with two hinge pieces which are coaxially and rotatably arranged on the shaft body, the end parts of the hinge pieces are correspondingly hinged with the two ends of the bottom of the clamp unit to form a symmetrical connecting rod structure, the clamp unit can be synchronously driven to complete opening and closing actions when the shaft body is lifted and moved, and the structure is skillfully arranged; in addition, when the hinge unit is in a horizontal straightening state, the hinge unit can exert a strong mechanical self-locking function, and effectively ensure that the clamp unit can be stably kept in a clamping state, so that a clamping terminal point is limited without a loosening phenomenon, and accurate and stable clamping is ensured;

(4) the clamping mechanism is provided with a part for preventing over-tight clamping, and the size of a clamping space reserved between a left clamping arm and a right clamping arm when the two are in matched conflict is preset according to the specification and the model of a bottle blank by arranging a limiting part and a conflict part which can be matched with the limiting part and the conflict part, so that a clamp unit can be ensured to be matched and just clamp the bottle blank, and the bottle blank is prevented from being excessively clamped and damaged under the condition of failure or other abnormal conditions;

(5) the clamping mechanism is provided with a component for avoiding loose clamping, the elastic piece is connected and arranged between the left clamping arm and the right clamping arm, when the clamping unit is closed, the elastic piece contracts and resets and is matched with the limiting piece and the abutting piece, so that the clamp unit can be fully clamped in place, and the situation that the clamping structure is loosened due to mechanism abrasion and the like is avoided.

In conclusion, the invention has the advantages of simplified and ingenious structure, rapid and stable action, accurate clamping without looseness and the like, and is particularly suitable for the technical field of synchronous clamping of bottle blanks.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an elevational view of the overall construction of the present invention;

FIG. 3 is a cross-sectional view taken at A in FIG. 2;

FIG. 4 is a partial schematic view of the present invention;

FIG. 5 is an enlarged view of FIG. 4 at B;

FIG. 6 is a side view of the overall structure of the present invention;

fig. 7 is a sectional view at C of fig. 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

As shown in fig. 1-2, a preform gripping mechanism comprises: the device comprises a clamping mechanism 1 and an opening and closing driving mechanism 2, wherein the opening and closing driving mechanism 2 drives the clamping mechanism 1 to clamp or release a bottle blank 10; as shown in fig. 3, the clamping mechanism 1 includes a clip unit 4, and the opening and closing driving mechanism 2 is rotatably connected to the bottom of the clip unit 4 and drives the top of the clip unit 4 to open and close through a lifting action.

Preferably, the clamping mechanisms 1 are arranged in a plurality of groups, and the opening and closing driving mechanisms 2 are connected in series from the bottom of each clip unit 4 to drive each clip unit 4 to be opened and closed synchronously.

Preferably, as shown in fig. 4 to 5, the opening and closing driving mechanism 2 includes: the hinge units 5 are arranged in one-to-one correspondence with the clamping mechanisms 1, and two ends of each hinge unit 5 are correspondingly hinged with two ends of the bottom of the clamp unit 4; when the middle hinge point of the hinge unit 5 is lifted, the two ends of the bottom of the clamp unit 4 are driven to approach or separate from each other.

Preferably, as shown in fig. 2, the opening/closing drive mechanism 2 further includes: the linkage assembly 6 is arranged along the arrangement direction of the plurality of groups of clamping mechanisms 1 and can move up and down; the middle part of each hinge unit 5 is hinged on the linkage assembly 6 and driven by the linkage assembly 6 to synchronously move.

In this embodiment, the opening and closing driving mechanism 2 is set to be a structure that the linkage assembly 6 of the single shaft body is connected with a plurality of hinge units 5 in series, the plurality of clip units 4 are correspondingly connected in series through the hinge units 5 from the bottom of the clip units 4 in series, and the tops of the clip units 4 can be driven to be opened and closed synchronously through the short lifting action of the linkage assembly 6 shaft body, so that the structural simplification and improvement of the bottle blank clamping driving mechanism are greatly realized, the structure is extremely compact, the cost is saved, and the action is quick, convenient and stable.

In addition, it should be noted that, in this embodiment, on one hand, the opening and closing driving mechanism 2 connects the clamping mechanisms 1 in series, and on the other hand, the end driving unit 62 of the opening and closing driving mechanism 2 is fixedly mounted on the two clamping mechanisms 1 on the outermost side, so that the opening and closing driving mechanism 2 and the clamping mechanisms 1 are mutually supported and connected to form an independent module, the structure is simplified and stable, many installation accessories are omitted, the cost is reduced, and the service life is prolonged.

Preferably, as shown in fig. 3, the hinge unit 5 includes: a first hinge plate 51 and a second hinge plate 52, wherein the first hinge plate 51 and the second hinge plate 52 are coaxially and rotatably arranged.

Preferably, the clip unit 4 includes: the clamping device comprises a rotating shaft 41, a left clamping arm 42 and a right clamping arm 43, wherein the rotating shaft 41 is vertically limited, and the left clamping arm 42 and the right clamping arm 43 are symmetrically arranged and are respectively rotatably mounted on the rotating shaft 41;

the hinge unit 5 is located right below the rotating shaft 41, an end of the first hinge piece 51 is hinged to an end of the left clamping arm 42, and an end of the second hinge piece 52 is hinged to an end of the right clamping arm 43.

In this embodiment, the hinge unit 5 is composed of a first hinge plate 51 and a second hinge plate 52 which are coaxially and rotatably mounted on the linkage shaft 61, the end portions of the two hinge plates are correspondingly hinged to the two ends of the bottoms of the left clamping arm 42 and the right clamping arm 43 of the clip unit to form a symmetrical connecting rod structure, when the linkage shaft 61 moves up and down, the clip unit 4 can be synchronously driven to complete the opening and closing actions, and the structure is skillfully arranged.

The core invention conception of the application is that the synchronous opening and closing of the plurality of clamping units can be realized only through a structure that a shaft body is connected with a plurality of groups of double hinge pieces in series, the structure is greatly simplified, the opening and closing driving effect is more accurate and stable, and the technical progress is remarkable.

The opening and closing action process of the clamp unit 4 comprises the following steps: when the linkage shaft 61 moves vertically downward from the state shown in fig. 3, the middle hinge point of the first hinge piece 51 and the second hinge piece 52 is pulled to move downward synchronously, and then the end parts of the first hinge piece 51 and the second hinge piece 52 correspondingly incline and move downward toward the middle hinge point with the hinge point of the left clamping arm 42 and the right clamping arm 43, and the bottom ends of the left clamping arm 42 and the right clamping arm 43 are close to each other based on the vertical limit of the rotating shaft 41 by the moving base 7, so that the top parts are far away from each other, and the opening of the clamp unit 4 is realized; in the same way, when the linkage shaft 61 moves vertically upward, the clamp unit 4 is folded back to the state shown in fig. 3 under the linkage action of the hinge unit 5.

In addition, it should be added that, as shown in fig. 3, when the clip unit 4 is in the completely clamped state, and when the two hinge pieces of the hinge unit 5 are in the horizontally straightened state, the three hinge points are in a horizontal line, and the state of the hinge unit 5 at this time is extremely stable, and can exert its strong mechanical self-locking function, effectively ensure that the clip unit 4 can be stably maintained in its clamped state without a loosening phenomenon, thereby ensuring accurate and stable clamping.

Preferably, as shown in connection with fig. 4-5, the linkage assembly 6 includes: the linkage shaft 61 is arranged by penetrating through each clamping mechanism 1, and each hinge unit 5 is hinged to the linkage shaft 61; and a driving unit 62, wherein a telescopic driving end of the driving unit 62 is fixedly connected with the linkage shaft 61 to drive the linkage shaft 61 to move up and down.

In this embodiment, the cylinder of the driving unit 62 only needs a short stroke of extension and retraction to complete the opening and closing operation of the clip unit 4, and the driving operation is short and convenient and has good stability.

Preferably, the driving units 62 are provided in one set and fixedly mounted on any one set of the clamping mechanisms 1.

Preferably, as shown in fig. 5, the driving unit 62 includes: the mounting seat 621 is fixedly mounted on the clamping mechanism 2, and the translation driving part 622 is vertically mounted on the mounting seat 621, and the telescopic end part of the translation driving part 622 is fixedly connected with the linkage shaft 61; the translation driving portion 622 is provided as a telescopic cylinder.

Preferably, the driving unit 62 further includes: and the sliding block 623 is vertically and slidably mounted on the mounting base 621 and is connected and arranged between the telescopic end part of the translation driving part 622 and the linkage shaft 61, and the stability of lifting action can be improved due to the arrangement of the sliding block 623.

Preferably, as shown in fig. 4 to 5, the clamping mechanism 1 further includes: and the clamp unit 4 is fixedly arranged on the movable base 7 through a rotating shaft.

Preferably, the movable base 7 is provided with a notch 70 through which the opening and closing driving mechanism 2 passes and performs a lifting operation.

The driving unit 62 is fixedly attached to a side portion of the movable base 7.

Example two

The same or corresponding parts of this embodiment as those of the above embodiment are designated by the same reference numerals as those of the above embodiment, and only the points different from the above embodiment will be described below for the sake of convenience. This embodiment differs from the above embodiment in that:

preferably, as shown in fig. 2, the driving units 62 are provided in two sets and are fixedly mounted on the two outermost clamping mechanisms 2, respectively.

In this embodiment, a set of driving units 62 is respectively connected to two end portions of the linkage shaft 61, so that the lifting motion of the linkage shaft 61 is more stable.

EXAMPLE III

preferably, as shown in fig. 3, a limiting member 22 is disposed on the moving base 7 between two clamping arms of the clamp unit 4, a contact member 23 is disposed on the two clamping arms of the clamp unit 4, and when the clamp unit 4 is closed to a proper position, the contact member 23 contacts with the limiting member 22;

in the present embodiment, the "clamping over-tightening prevention member" formed by the contact member 23 and the limiting member 22 is provided, and when the clamping unit 4 performs the clamping operation, the contact members 23 on both sides contact both sides of the limiting member 22, so as to limit the clamping end point. Therefore, the size of the clamping space reserved between the left clamping arm 42 and the right clamping arm 43 when the abutting part 23 and the limiting part 22 are matched and abutted can be preset according to the specification and the model of the bottle blank 10, so that the clamp unit 4 can be always matched to just clamp the bottle blank 10, and the bottle blank 10 is prevented from being excessively clamped and damaged under the condition of failure or other abnormal conditions.

An elastic piece 24 is connected and arranged between the two clamping arms of the clamp unit 4.

In this embodiment, a "member for avoiding loose clamping" is further provided, which is composed of an elastic member 24, when the clamping unit 4 performs the closing action, the elastic member 24 contracts and resets, the auxiliary frame unit 4 completes the closing rapidly, and it cooperates with the abutting member 23 and the limiting member 22 to ensure that the clamping unit 4 can be clamped in place sufficiently, thereby avoiding the situation of loose clamping structure caused by mechanism abrasion and the like.

Working state

Clamping the bottle blank: when the clamp unit 4 is in an open state, the translation driving part 622 drives the linkage shaft 61 to ascend, and then the bottom ends of the left clamping arm 42 and the right clamping arm 43 are synchronously pushed to be away from each other through the first hinge piece 51 and the second hinge piece 52, so that the clamp unit 4 is folded, and the bottle blank 10 is clamped;

loosening the bottle blank: when the clamp unit 4 is in the closed state, the translation driving portion 622 drives the linkage shaft 61 to descend, and then the bottom ends of the left clamping arm 42 and the right clamping arm 43 are synchronously pulled to be close to each other through the first hinge piece 51 and the second hinge piece 52, so that the clamp unit 4 is opened, and the bottle blank is loosened.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A preform gripper mechanism comprising:

clamping mechanism (1), and

the opening and closing driving mechanism (2), the opening and closing driving mechanism (2) drives the clamping mechanism (1) to clamp or release the bottle blank (10);

it is characterized in that the preparation method is characterized in that,

the clamping mechanism (1) comprises a clamp unit (4), the opening and closing driving mechanism (2) is connected with the bottom of the clamp unit (4) in a rotating mode, and the top of the clamp unit (4) is driven to perform opening and closing actions through lifting actions.

2. The preform retaining mechanism of claim 1,

the clamping mechanisms (1) are arranged with a plurality of groups,

the opening and closing driving mechanism (2) is connected in series from the bottom of each clip unit (4) to drive each clip unit (4) to be opened and closed synchronously.

3. A preform gripping mechanism as claimed in any one of claims 1 or 2, characterized in that said opening and closing actuating mechanism (2) comprises:

the hinge unit (5) is arranged corresponding to the clamping mechanism (1), and two ends of the hinge unit (5) are correspondingly hinged with two ends of the bottom of the clamp unit (4);

when the middle hinge point of the hinge unit (5) is lifted, the two ends of the bottom of the clamp unit (4) are driven to approach or separate from each other.

4. A preform gripping mechanism as claimed in claim 3, characterized in that the opening and closing actuating mechanism (2) further comprises:

the linkage assembly (6), the said linkage assembly (6) can do the lifting movement;

the middle part of the hinge unit (5) is hinged and installed on the linkage component (6) and driven by the linkage component (6) to synchronously act.

5. A preform gripping mechanism as claimed in claim 3, characterised in that the hinge unit (5) comprises:

a first hinge piece (51), and

and the first hinge piece (51) and the second hinge piece (52) are coaxially and rotatably arranged.

6. A preform gripping mechanism as claimed in claim 5, characterized in that the clip unit (4) comprises:

a rotating shaft (41), the rotating shaft (41) is vertically arranged in a limiting way, and

the left clamping arm (42) and the right clamping arm (43) are symmetrically arranged and are respectively rotatably mounted on the rotating shaft (41);

the hinge unit (5) is located under the rotating shaft (41), the end of the first hinge piece (51) is hinged to the end of the left clamping arm (42), and the end of the second hinge piece (52) is hinged to the end of the right clamping arm (43).

7. A preform gripping mechanism as claimed in claim 4, characterised in that the linkage assembly (6) comprises:

the linkage shaft (61) penetrates through the clamping mechanism (1), and the hinge unit (5) is hinged to the linkage shaft (61); and

the telescopic driving end of the driving unit (62) is fixedly connected with the linkage shaft (61) to drive the linkage shaft (61) to move up and down.

8. A preform gripping device as claimed in claim 7, characterized in that said drive unit (62) is fixedly mounted on at least one group of said gripping devices (1).

9. A preform gripping mechanism as claimed in claim 2, characterized in that the gripping mechanism (1) further comprises:

the clamp unit (4) is fixedly arranged on the movable base (7) through a rotating shaft.

10. The preform retaining mechanism of claim 9,

a limiting part (22) is arranged between the two clamping arms of the clamp unit (4) on the movable base (7), a contact part (23) is arranged on the two clamping arms of the clamp unit (4), and when the clamp unit (4) is closed in place, the contact part (23) is contacted with the limiting part (22);

an elastic piece (24) is connected and arranged between the two clamping arms of the clamp unit (4).