阅读说明：本技术 用于生产装饰链的自动化机器和生产装饰链的工艺 (Automatic machine for producing a decorative chain and process for producing a decorative chain ) 是由 吉安尼·佩特努佐 于 2020-04-09 设计创作，主要内容包括：用于生产装饰链的自动化机器包括：一个第一旋转支撑基座(10),安装有多个第一操作头(100),用于从相应的金属丝开始生产装饰链的链节；以及一个第二旋转支撑基座(20),安装有多个第二操作头(200),它们每个都配有一个夹持器,用于与第一操作头(100)配合,使链的链节对应于第一操作头(100)的不同操作单元移动。此外,机器还包括：移动装置(11、21),被机械地连接到第一和第二支撑基座(10、20)上并且可以使这些基座绕其旋转轴(X,X’)旋转；以及一个控制单元,被连接到移动装置(11、21)上,以命令它们旋转第一和第二支撑基座(10、20),并将一个选定的第一操作头(100)和一个选定的第二操作头(200)带到工作站(50),从而能够改变生产的链节的类型。(An automated machine for producing a decorative chain comprising: a first rotary supporting base (10) fitted with a plurality of first operating heads (100) for producing links of a decorative chain starting from respective wires; and a second rotary support base (20) fitted with a plurality of second operating heads (200), each equipped with a gripper for cooperating with the first operating head (100) to move the links of the chain in correspondence with the different operating units of the first operating head (100). Furthermore, the machine comprises: -movement means (11, 21) mechanically connected to the first and second support bases (10, 20) and able to rotate these bases about their rotation axes (X, X'); and a control unit connected to the movement means (11, 21) to command them to rotate the first and second support bases (10, 20) and to bring a selected first operating head (100) and a selected second operating head (200) to the workstation (50), so as to be able to vary the type of chain link produced.)

1. Automated machine (1) for producing a decoration chain, comprising:

-at least one supply unit (30) for supplying a respective wire (31);

-at least one first operating head (100) feedable by said wire (31) and equipped with:

-a helical unit (110) for partially bending at least one length of said wire (31),

thereby obtaining a helical wire forming portion (31 a);

-a cutting unit (120) for cutting said shaped portion (31a) of wire to obtain an open link (31 b);

-a closing unit (130) for closing the opening link (31b) so as to obtain a closing link (31d) of the chain;

-at least one second operating head (200) for cooperating with said at least one first operating head (100) and provided with a gripper (210) capable of operating said wire (31) in correspondence of said screw unit (110), said cutting unit (120) and said closing unit (130);

moreover, the automated machine (1) is characterized by further comprising:

-a first support base (10) rotatable, provided with a first rotation axis (X) and fitted with:

-a plurality of said first operating heads (100) arranged around said first rotation axis (X), and

-a plurality of said supply units (30), each operatively associated with a respective said first operating head (100), for supplying a respective said wire (31) onto a screw unit (110) of said first operating head (100);

-a second support base (20) rotatable, having a second rotation axis (X '), and fitted with a plurality of said second operating heads (200) arranged around said second rotation axis (X');

-a work station (50) intercepted by said first support base (10) and by said second support base (20);

-first movement means (11) mechanically connected to said first support base (10) and operable to rotate said first support base (10) about said first rotation axis (X);

-second movement means (21) mechanically connected to said second support base (20) and operable to rotate said second support base (20) about said second rotation axis (X');

-at least one control unit, wherein:

-it is also operatively connected to said first movement means (11) for commanding said first movement means (11) to rotate said first support base (10) so as to bring a selected one of said first operating heads (100) to said workstation (50).

-it is also operatively connected to said second movement means (21) for commanding said second movement means (21) to rotate said second support base (20) so as to bring a selected one of said second operating heads (200) to said workstation (50).

2. The automated machine (1) according to claim 1, characterized in that said screw unit (110) comprises:

-a containing body (111) extending along a development axis (Y);

-a helical guide (112) fixed inside said containing body (111), extending along said expansion axis (Y) between a first end (112a) and a second end (112b) corresponding to said cutting unit (120), and having:

-a central cavity (113) extending along said development axis (Y) between said first end (112a) and said second end (112 b);

-a track (114) extending helically around said central cavity (113) between a first end (112a) and a second end (112b) of said helical guide (112) and able to house said wire (31) inside it.

-a winding core (116) extending along said development axis (Y) inside the central cavity (113) of said helical guide (112);

-a translation drive means (117) mechanically connected to said winding core (116) for translating said winding core (116) along said expansion axis (Y) in a first operating stroke, wherein said winding core (116) moves towards the second end (112b) of said helical guide (112) and in a second operating stroke, said winding core (116) moves away from the second end (112b) of said helical guide (112);

-a rotary drive means (118) mechanically connected to said winding core assembly (116) for rotating said winding core assembly (116) around said expansion axis (Y) during said first operating stroke so as to push said wire (31) in said helical guide (112) track (114) towards said cutting unit (120).

3. The automated machine (1) according to claim 2, characterized in that said rotary drive means (118) comprise at least one rotary motor (119) equipped with a rotor mechanically connected to said winding core assembly (116) and able to rotate said winding core assembly (116) during said first operating stroke.

4. The automated machine (1) according to claim 3, characterized in that said control unit comprises at least a first electronic drive module operatively connected to said rotary motor (119) and programmed to control said rotary motor (119) to rotate said winding cores (116) in said first operating stroke by an angle that can be set using a deviation value determined according to the elastic return of said wire (31).

5. The automated machine (1) according to claim 1, characterized in that each of said second operating heads (200) comprises an electric control device (212) mechanically connected to said gripper (210) and able to command the movement of said gripper (210) between:

-a first operating position, in which the gripper (210) is arranged in correspondence with the cutting unit (120), at least for gripping the open links (31b) cut by the cutting unit (120), and

-a second operating position, in which said gripper (210) is arranged in correspondence with said closing unit (130) for gripping said opening link (31b) at said closing unit (130);

wherein said control unit comprises a second electronic drive module operatively connected to said control means (212) for automatically commanding said control means (212) to move said gripper (210) between said first operative position and said second operative position.

6. The automated machine (1) according to claim 1, characterized in that said first support base (10) comprises:

-a first rotation axis (13) arranged coaxial to said first rotation axis (X) and mechanically connected to said first movement means (11);

-a first platform (12) fixed to said first rotation shaft (13) and fitted at its periphery with a plurality of said first operating heads (100);

wherein the supply unit (30) is mounted on a first rotation axis (13) above the respective first operating head (100).

7. The automated machine (1) according to claim 6, characterized in that each of said supply units (30) comprises:

-a rotating spool (32) provided with a shaft (33) which can pivot on the first support base (10) and on which the respective wire (31) may be wound;

-a tensioning clutch (34) acting on the shaft (33) of the rotating spool (32) to keep the wire (31) tensioned.

8. Process for producing a decoration chain by means of an automated machine (1) according to claim 1, comprising the following stages in sequence:

-a bending stage, in which the wire (31) is bent by said helical unit (110) to obtain said wire forming portion 31a in a helical shape.

-a clamping phase, wherein the clamps (210) clamp the wire forming section (31a) in correspondence of the screw unit (110),

-a cutting phase, in which the cutting unit (120) cuts the wire forming portion (31a) gripped by the gripper (210) so as to obtain an open link (31b) having two spaced ends (31c),

-a closing phase, in which the closing unit (130) brings the two separated ends (31c) of the open link (31b) gripped by the gripper (210) close, obtaining a closed link (31d),

-a linking phase, in which a further profiled section (31f) of wire is inserted into the closed link (31d) gripped by the gripper (210).

-a release phase, in which the gripper (210) releases the closing link (31 d).

The phases are cyclically repeated;

the process is further characterized by:

-at least a first phase of setting a selected first operating head (100), wherein the first movement means (11) drive the first support base (10) in rotation so as to bring the selected first operating head (100) to the workstation (50);

-at least a second phase of setting a selected second operating head (200), wherein the second movement means (21) drive the second support base (20) in rotation so as to bring the selected second operating head (200) to the workstation (50) in order to associate the selected second operating head (200) with the selected first operating head (100).

9. Process, as claimed in claim 8, characterized by comprising a first setting phase, between said closing phase and said linking phase, to bring said further first operating head (100') to said workstation (50);

wherein, in the subsequent linking phase, a further length of wire forming portion (31f) produced by said further first operating head (100') is inserted into the closed link (31d) gripped by the gripper (210);

wherein the process further comprises a second setting phase carried out after the release phase to bring the further second operating head (200') to the workstation (50).

10. Process as claimed in claim 8, obtained by means of an automatic machine (1) as claimed in claim 4, characterized in that, in said bending phase, said winding cores (116) are driven to perform said first operating stroke towards said cutting unit (120) and are simultaneously driven to rotate about said expansion axis (Y) by an angle set by a deviation value determined according to the elastic return of the wire (31).