摘要:
A device for centering plastic webs automatically fed thereon one by one so as to feed it to a pair of cramp chains to be correctly gripped thereby at the opposite side edges. This comprises a bed (10) consisting of a central frame (11) and longitidinal as well as transverse arms (12a, 12b; 13a, 13b) respectively extended in opposite directions from the central frame for supporting the web of varied size. A plurality of pairs of centering members (21a, 21b; 22a, 22b; 23a, 23b), each having an upwardly projected pin (24), are oppositely arranged and adapted to move toward and apart with each other so as to abut on the longitudinal and transverse side edges of web on the table with said pin for centering. It is preferable and sufficient to move said centering members by means of a belt and pulleys for treating a light web.
摘要:
Apparatus and process for trimming articles molded on a plastic sheet and successively fed from a forming machine. A carriage (10) receives the article ( b ) to be suckingly held thereunder and is moved in a trimming zone (II), where a pair of longitudinal cutter devices (20, 20′), each having a stationary blade (22′) and an angularly movable blade (24′) are horizontally moved together from respective retreated positions for longitudinal cutting. Then, a front transverse cutter device (30) having similar pair of blades is raised up from retreated position for transverse cutting and then a rear transverse cutter device (30′) is similarly operated.
摘要:
A device for centering plastic webs automatically fed thereon one by one so as to feed it to a pair of cramp chains to be correctly gripped thereby at the opposite side edges. This comprises a bed (10) consisting of a central frame (11) and longitidinal as well as transverse arms (12a, 12b; 13a, 13b) respectively extended in opposite directions from the central frame for supporting the web of varied size. A plurality of pairs of centering members (21a, 21b; 22a, 22b; 23a, 23b), each having an upwardly projected pin (24), are oppositely arranged and adapted to move toward and apart with each other so as to abut on the longitudinal and transverse side edges of web on the table with said pin for centering. It is preferable and sufficient to move said centering members by means of a belt and pulleys for treating a light web.
摘要:
A device for gripping and pulling a length of thermoplastic sheet (S) softened to be moldingly formed at the front and rear edges, which are otherwise inevitably made to be concave, so as to hold said edges substantially straight, the device comprising at least two pairs of lower and upper gripping members (20, 30) arranged to be vertically movable so as to grip the above front and rear edges, and two pairs of pull levers (23, 33) each cooperating with one of the pair of lower and upper gripping members (20, 30) so as to grip the front and rear edges in advance of the gripping by the gripping members and pull to straighten the concaved edges which are then gripped by the gripping members.
摘要:
A device for gripping and pulling a length of thermoplastic sheet (S) softened to be moldingly formed at the front and rear edges, which are otherwise inevitably made to be concave, so as to hold said edges substantially straight, the device comprising at least two pairs of lower and upper gripping members (20, 30) arranged to be vertically movable so as to grip the above front and rear edges, and two pairs of pull levers (23, 33) each cooperating with one of the pair of lower and upper gripping members (20, 30) so as to grip the front and rear edges in advance of the gripping by the gripping members and pull to straighten the concaved edges which are then gripped by the gripping members.
摘要:
Apparatus and process for trimming articles molded on a plastic sheet and successively fed from a forming machine. A carriage (10) receives the article ( b ) to be suckingly held thereunder and is moved in a trimming zone (II), where a pair of longitudinal cutter devices (20, 20′), each having a stationary blade (22′) and an angularly movable blade (24′) are horizontally moved together from respective retreated positions for longitudinal cutting. Then, a front transverse cutter device (30) having similar pair of blades is raised up from retreated position for transverse cutting and then a rear transverse cutter device (30′) is similarly operated.