Device for assembling plastic objects
阅读说明:本技术 用于装配塑料物体的设备 (Device for assembling plastic objects ) 是由 A·F·布西纳罗 于 2018-04-10 设计创作,主要内容包括:提供了一种用于装配塑料物体的设备(1),其中,塑料物体包括适用于联接到基部支撑件(6)的帽部(2),基部支撑件基本上至少部分地相对于帽部(2)呈相反形状,设备(1)包括:限定了装配路径(3a)和包括装配路径(3a)的装配平面(3b)的装配线(3)的至少一部分、以及多个主轴(30),主轴适用于通过装置(31)沿着装配路径(3a)移动,并且适用于以受控方式拾取帽部(2),其中,主轴(30)适用于将帽部(2)定位和推动到沿装配路径(3a)布置的基部支撑件(6)上,以及其中,设备(1)还包括定位装置(7)和控制单元(5),定位装置至少包括第一检测器(70)和第二检测器(71),控制单元包括适用于沿垂直于装配路径(3a)和装配平面(3b)的方向平移和旋转主轴(30)的辅助控制系统(53),并且包括适用于检测主轴(30)相对于所述装配路径(3a)的定向的第三编码器(54),其中,第一检测器(70)适用于检测第一定向(6a),第二检测器(71)适用于检测第二定向(2a),控制单元(5)适用于通过检测器(70、71)检测第一定向(6a)和第二定向(2a),并且适用于操作辅助控制系统(53),以使基部支撑件(6)和帽部(2)对准。(An apparatus (1) for assembling plastic objects is provided, wherein the plastic objects comprise a cap (2) adapted to be coupled to a base support (6), the base support being substantially at least partially of opposite shape with respect to the cap (2), the apparatus (1) comprising: at least a part of an assembly line (3) defining an assembly path (3a) and an assembly plane (3b) including the assembly path (3a), and a plurality of spindles (30) adapted to be moved along the assembly path (3a) by means of devices (31) and to pick up the caps (2) in a controlled manner, wherein the spindles (30) are adapted to position and push the caps (2) onto base supports (6) arranged along the assembly path (3a), and wherein the apparatus (1) further comprises positioning devices (7) comprising at least a first detector (70) and a second detector (71) and a control unit (5) comprising an auxiliary control system (53) adapted to translate and rotate the spindles (30) in a direction perpendicular to the assembly path (3a) and the assembly plane (3b), and comprising a third encoder (30) adapted to detect the orientation of the spindles (30) with respect to the assembly path (3a) 54) Wherein the first detector (70) is adapted to detect the first orientation (6a), the second detector (71) is adapted to detect the second orientation (2a), the control unit (5) is adapted to detect the first orientation (6a) and the second orientation (2a) by means of the detectors (70, 71), and to operate the auxiliary control system (53) to align the base support (6) and the cap (2).)
1. A device (1) for assembling plastic objects,
the plastic object comprises a cap (2) adapted to be coupled to a base support (6) substantially at least partially of opposite shape with respect to the cap (2), the apparatus (1) comprising: at least one part of an assembly line (3) of the cap (2) and the base support (6) defining an assembly path (3a) and an assembly plane (3b) comprising the assembly path (3a), and
the apparatus (1) comprising a plurality of spindles (30) adapted to be moved by means (31) along the assembly path (3a) and to pick up in a controlled manner a selected one between the cap (2) and the base support (6), the spindles (30) being adapted to position and push the cap (2) onto the base support (6) arranged along the assembly path (3a) on the assembly plane (3b) or the base support (6) onto the cap (2) arranged along the assembly path on the assembly plane,
characterized in that said device (1) comprises:
-a positioning device (7) comprising at least a first detector (70) and a second detector (71);
-a control unit (5) comprising an auxiliary control system (53) adapted to translate and rotate said spindle (30) in a direction perpendicular to said assembly path (3a) and to said assembly plane (3b), and comprising a third encoder (54) adapted to detect the orientation of said spindle (30) with respect to said assembly path (3a),
the first detector (70) being adapted to detect the first orientation (6a) of the base support (6) with respect to the assembly path (3a),
the second detector (71) being adapted to detect the second orientation (2a) of the cap (2) with respect to the assembly path (3a),
the control unit (5) is adapted to detect the first orientation (6a) of the base support (6) and the second orientation (2a) of the cap (29) by means of the detectors (70, 71), and to operate the auxiliary control system (53) to align the base support (6) and the cap (2).
2. Apparatus (1) according to claim 1, wherein said assembly line (3) is a rotary machine, said assembly path (3a) is at least a portion of a circle, and said device (31) comprises a shaft driving the shaft, said shaft being adapted to rotate about an axis centred on said assembly path (3a) and perpendicular to said assembly plane (3 b).
3. Apparatus (1) according to claim 1, wherein the detector (70, 71) is a camera adapted to detect a first image (60) of the base support (6) and a second image (23) of the cap (2), and the control unit (5) is adapted to compare the images (60, 23) with a sample image (8), the first image (60) and the sample image (8) defining the first orientation (6a) of the base support (6) with respect to the assembly path (3a), the second image (60) and the sample image (8) defining the second orientation (2a) of the cap (2) with respect to the assembly path (3 a).
4. Device (1) according to one or more of the preceding claims, wherein said control unit (5) calculates an angular displacement (β) between said first orientation (6a) of said base support (6) and said second orientation (2a) of said cap (2) calculated by comparing said images (60, 23) with said sample image (8), said auxiliary control system (53) rotating said main shaft (30) holding said cap (2) by said angular displacement (β) to align said base support (6) and said cap (2).
5. The apparatus (1) according to one or more of the preceding claims, wherein said sample image (8) is an image of said cap (2) and said base support (6) in assembled configuration, and said first orientation (6a) and said second orientation (2a) are defined in a plane parallel to said assembly path (3a) and to said assembly plane (3 b).
6. The apparatus (1) according to one or more of the preceding claims, wherein said auxiliary control system (53) comprises, for each of said spindles (30), a second actuator (53a) and a first actuator (53b), said second actuator (53a) being removably attached to said device (31) and being suitable for translating in said direction perpendicular to said assembly path (3a) and to said assembly plane (3b), said first actuator (53b) being removably attached to said spindle (30) and to said second actuator (53a) and being suitable for rotating said spindle (30) about said direction perpendicular to said assembly path (3a) and to said assembly plane (3 b).
7. The device (1) according to one or more of the preceding claims, wherein said second actuator (53a) is a linear brushless actuator and wherein said first actuator (53b) is a rotary brushless actuator.
8. Device (1) according to one or more of the preceding claims, wherein said spindle (30) is of the type selected between mechanical, electric or pneumatic.
9. Device (1) according to one or more of the preceding claims, wherein said control unit (5) comprises a control system (50) suitable for processing the signals coming from said detectors (70, 71) and from said third encoder (54), and for controlling said auxiliary control system (53).
10. Device (1) according to one or more of the preceding claims, wherein said control system (50) comprises an electronic processor of a known type.
Technical Field
The object of the invention is an apparatus for assembling plastic objects of the type stated in the preamble of
In particular, the object of the invention is a cutting device, for example for objects such as caps.
Background
As is known, the cap (cap) for food products has two main parts: a lid portion (lid portion) and a tamper evidence portion (tamper evidence portion) designed to demonstrate proper closure of the food container.
Examples of these are rings included in the cap (cap) of bottles for common liquids (e.g. beverages or water, etc.) which are separated from the cap portion by small recesses.
Between the notches are also tabs (tab) designed to break or tear when the bottle is opened for the first time.
The method ensures that the food in the container is protected before use by the user.
For the
Containers, such as those used for milk or juice, etc., the lid portion is typically separated from the tamper evidence portion by a plurality of tabs.For example, to meet the minimum seal strength requirements imposed by law, three such tabs are necessary.
However, it can be observed that in the above examples, such a cap comprises only two tabs when provided to the end user.
This is due to the fact that, after the cap has undergone all the necessary processing, the intermediate tab is removed so as to enable the user to suitably open the cap to use the product and then replace it.
Furthermore, the caps used on the above-mentioned containers are generally subjected to a treatment in which they are coupled with the base support by screwing (crimping) or by a cold plastic deformation process.
In order to perform such operations, in the state of the art, substantially automated machines are used which are able to process a plurality of parts (in particular a plurality of caps) in succession.
In particular, such machines comprise a rotating mechanism comprising a spindle arranged radially with respect to a central axis, suitable for picking caps from a continuous line of caps (continuous line) and for compressing said caps, comprising a lid portion and a tamper evidence portion, by means of a cold forming process onto a base support, which is generally rigid.
Furthermore, during rotation, a cutting blade arranged on each spindle is designed to remove an intermediate tab arranged between the cover part and the tamper evidence part.
When the processing is complete, the finished caps are transported back to the line, away from the processing machine.
The above-described prior art has several significant drawbacks.
In particular, the machine includes a large number of internal components that result in increased complexity and cost.
Furthermore, during coupling, misalignment may occur between the plastic objects, in particular between the cap and the support, which may lead to damage or incorrect coupling of said objects.
In particular, the need to make precise cuts to avoid breaking the side tabs connecting the cap portion and the tamper evidence portion results in a solution with a cutter on each spindle.
Each single spindle is therefore technically and economically expensive.
Furthermore, the mechanical connection between the rotating spindle and the actuator designed to operate the blade is complex and may lead to inaccuracies, which in the long term prevent a complete optimization of the production line.
Finally, the cutting system does not take into account the positioning of the cap and the positioning of the base support, thus causing undesirable damage, resulting in product loss and waste.
Disclosure of Invention
In this case, the technical purpose of the present invention is to develop a fitting device for plastic objects that is able to substantially overcome at least some of the inconveniences described above.
Within the scope of said technical purpose, an important object of the present invention is to provide a device that is able to simplify the system and, consequently, the structure of the rotating equipment (plant) for coupling the cap to the base support.
Another important object of the invention is to provide a mounting device for plastic objects which reduces the production costs of the processing machine.
Another object of the invention is to optimize the production of the caps by increasing the coupling speed.
Finally, another object of the invention is to limit the damage of the caps being processed, so as to reduce the number of rejects produced.
This technical and specific object is achieved by an assembly plant for plastic objects as claimed in the appended
Drawings
The features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments of the invention, which proceeds with reference to the accompanying drawings, in which:
figure 1 shows an assembly device and a cutting member for plastic objects according to the invention;
FIG. 2 is an exploded view of a cap suitable for handling by the assembly equipment;
figure 3 shows an assembly apparatus and a positioning device for caps according to the invention;
FIG. 4a shows an example of a comparison between images acquired by a detector according to the present invention;
FIG. 4b shows an example of a sample image according to the present invention;
FIG. 5 is a spindle including an auxiliary control system according to the present invention;
FIG. 6 is a schematic diagram of a control unit according to the present invention;
FIG. 7 is a side view of one example of the operation of the cutting mechanism;
fig. 8 shows a view of the cap and the base support in an assembled configuration (assembly configuration) as viewed from above; and
fig. 9 shows a view of the cap and base support in the assembled configuration from above.
Detailed Description
In this document, measurements (values), values, shapes and geometric data (such as perpendicularity and parallelism) should be considered as being free of any measurement errors or inaccuracies due to production and/or manufacturing errors, and in any case, free of any slight differences between the values, measurements (values), shapes or geometric data associated therewith, when used with terms such as "about" or other similar terms such as "more or less" or "substantially". For example, when these terms are associated with a numerical value, it is preferred that the difference represent no more than 10% of the numerical value.
Furthermore, terms such as "first," "second," "upper," "lower," "primary," and "secondary" do not necessarily denote order, priority, or respective position, but may be used simply to distinguish one element from another. Unless otherwise stated, the measurements (values) and data provided in this document should be considered using the international standard atmospheric ICAO (ISO 2533). With reference to the figures, the
The
The
Thus, the
The
In contrast, the tamper evidence part 21 is an element on the outside of the
The tamper evidence portion may include an aperture for coupling to an external element.
Preferably, the
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Furthermore, the
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Basically, the
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Alternatively, the
In this alternative configuration, preferably, the
Preferably, therefore, the
Preferably, the
However, the assembly line may also be a straight line machine, and the
The
The means 31 are part of the apparatus adapted to move the
Preferably, the
In particular, the
Furthermore, the
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Each
Preferably, there are a plurality of
The
For example, the
Furthermore, the
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For example, if a
Preferably, the
In fact, the cutting is preferably carried out when the
The
Furthermore, preferably, the
Therefore, preferably, the
The
The cutting direction 4a is substantially the direction along which the
Preferably, the cutting direction 4a defines an angle α with the
The
The moving unit (means)40 is preferably adapted to move the cutting
Thus, the moving
For example, the
Said alternating machine 40b is any device suitable for rotating about a
In particular, the movement of the alternator 40b is transmitted to the support 40c by means of the
Preferably, the
Alternatively, the moving
The cutting
The
In particular, the
Preferably, the
In particular, the
The
Preferably, the
The
If a
Preferably, the first encoder 52 is linked to the
The first encoder 52 is a device of a type known in the art and is adapted to detect the position, velocity and angular acceleration of the
Therefore, the control system 50 is preferably a device adapted to control at least the
Preferably, the control system 50 comprises an electronic processor adapted to interact with the first encoder 52 and the
Preferably, the electronic processor comprises an electronic board of known type and/or a digital controller of known type.
Furthermore, the control system 50 is adapted to interact with the
In particular, the control system 50 is adapted to control the
In this way, the
Preferably, to perform this action, the
The auxiliary control system 53 is adapted to bring the
Preferably, the secondary control system 53 is adapted to translate and rotate the
The third encoder 54 is preferably an encoder of a known type suitable for detecting the orientation of the
Specifically, the assist control system 53 includes a second actuator 53a and a first actuator 53 b. The second actuator 53a is preferably removably attached to the
The second actuator 53b may be a linear actuator of known type or may comprise a barrel cam adapted to guarantee translation.
Thus, preferably, the second actuator 53a is adapted to allow the
The first actuator 53b is preferably removably attached to the spindle and removably attached to the second actuator 53a, and is adapted to rotate the
Preferably, the second actuator 53a is a linear brushless actuator, while the first actuator 53b is a rotary brushless actuator.
Preferably, the secondary control system 53 comprises a first actuator 53b and a second actuator 53a for each
Preferably, the control system 50 is adapted to process signals arriving from the third encoder 54, the
In particular, the control system 50 preferably defines a sample image 8 for each assembled
Preferably, the sample image 8 is an image of the
The sample image 8 is in particular a control image of the
Preferably, the
The
Preferably, the sample image 8 defines the
Furthermore, the
Preferably, the auxiliary control system 53 holds the
The function of the assembly device for the
The
During the transport configuration, the
Once the orientation is obtained, the
If an angular displacement β is present, the control unit, in particular the control system 50, moves the auxiliary control system 53, in particular the second actuator 53 b.
When the
As it rotates, the
When the cutting
At the end of this step, the
The
In fact, the apparatus is able to improve the precision with which the system couples the cap and the base support.
Another advantage of the present invention is that it optimizes the processing of plastic objects such as caps and increases the processing speed of the machine.
In a particular example, this operation optimizes the cutting of the caps and increases the cutting speed if the
Therefore, another advantage of the present invention is that it reduces the production cost of the processing machine.
In summary, another advantage of the invention is that it limits damage to the caps being processed, thereby reducing the amount of waste produced.
Modifications and variations may be made to the invention described herein without departing from the scope of the inventive concept as defined in the claims.
For example,
All the details may be replaced with equivalent elements and all other materials, shapes and sizes are encompassed within the scope of the invention.
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