JPH0572385U - Sucker for work handling - Google Patents

Abstract

(57) [Abstract] [Purpose] Even a disk-shaped work with a narrow suction-capable range can be securely held, and the cycle time can be shortened when the work is taken out of the molding machine. Sucker for easy work handling. [Structure] An arc-shaped lip (2) that is in close contact with the surface of a work is integrally formed on the tip edge of an arc-shaped suction cup body (1) made of a highly flexible synthetic resin, and a vacuum formed in the suction cup body. The opening of the hole 4 faces the inside of the lip.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction cup for adsorbing and handling a small, disc-shaped work.

[0002]

[Prior Art]

 For example, a chucking with a suction cup is used to handle a small and lightweight work such as when a synthetic resin injection-molded product (work) is taken out of a mold or when the work is transferred to the next process on an assembly line. Attachments are used. In other words, the suction cup is made of a highly flexible synthetic resin such as silicone rubber, and the opening of the vacuum hole formed in the center faces the thin lip integrally formed at the tip. Attach a plurality of to the mounting plate, and simultaneously suction a plurality of suction cups onto the surface of the workpiece for handling. When the work is disc-shaped like a compact disc, a chucking attachment is used that has multiple suction cups arranged on the same circumference.

[0003]

[Problems to be solved by the device]

 By the way, recently, a mini-compact disc with an outer diameter of 2.5 inches has been developed, but this mini-compact disc cannot attract the suction cup to the signal area near the outer circumference, so the center outside the signal area It is necessary to suck the suction cups in a narrow area to handle them. Therefore, in the chucking attachment having the above structure, it is necessary to use a small suction cup, and the number of suction cups is reduced. Therefore, there is a problem that a sufficient suction force for holding the work cannot be obtained, and the work falls off during handling.

Further, when the mini compact disc is molded by a mold, a sprue runner (runner) vertically projects from the center of the surface. Therefore, when the sprue runner is taken out from the molding machine, it is necessary to handle the sprue runner while it is located between the suction cups arranged on the same circumference. However, since the suction cups are closely spaced, the chucking attachment cannot be moved parallel to the mold surface to allow the sprue runner to pass between the suction cups, which causes the chucking attachment to move away from the sprue runner. It is necessary to approach the mold surface from the position. Therefore, there is a problem that the stroke becomes long and the cycle time becomes long.

Therefore, the present invention can securely hold even a disk-shaped work with a narrow suction-capable range of the suction cup, and when the work is taken out of the molding machine, the stroke is short and the cycle time can be shortened. The purpose of the present invention is to provide a suction cup for simple work handling.

[0006]

[Means for Solving the Problems]

 In order to achieve such an object, a work-handling suction cup according to the present invention has an arc-shaped lip that is closely adhered to the surface of the work at the tip edge of the arc-shaped suction cup body made of a highly flexible synthetic resin. Is integrally formed so that the opening of the vacuum hole formed in the body of the suction cup faces the inside of the lip.

[0007]

[Action]

 In other words, since the lip that is the suction part has a circular arc shape, a wide suction area can be secured with only one suction cup, and even if it is a disc-shaped work with a narrow suction cup suction range, the work is narrow. The central portion can be surely adsorbed and held. Since the suction cup body is arcuate, that is, the suction cup body is not a perfect circle, but a half moon shape or a C shape, and a part of the circle is cut out. In addition, the sprue runner can be centered on the suction cup through this notch. Therefore, it is not necessary to bring the chucking attachment close to the mold surface from a position far away from the mold surface in order to avoid the sprue runner, and the stroke can be shortened to shorten the cycle time.

[0008]

EXAMPLES The present invention will be specifically described below based on examples shown in the drawings. The suction cup body 1 is made of a highly flexible synthetic resin such as silicone rubber, and as shown in FIGS. 2 to 3, for example, a semicircular arc having an outer diameter of 30 mmφ, an inner diameter of 12 mmφ, and a height of 7 mm. It is the body. The suction cup body 1 is not necessarily limited to a semi-circular arc body, and may be a C-shape through which a sprue runner of a work can pass, as will be described later. As shown in FIG. 3, three attachment holes 3 are formed in the upper end edge of the suction cup body 1, and the inner peripheral surface of the attachment hole 3 has an annular groove 11 as shown in FIG. Are formed. Further, an annular projection 51 is formed on the outer periphery of the mounting portion 53 protruding from the mounting plate 5, and the suction cup body 1 can be attached to the mounting plate 5 with one touch by fitting the annular projection 51 into the annular groove 11. It is designed to be used. The attachment portion 53 is formed with a vent hole 52 connected to the pressure reducing device.

As shown in FIG. 2, a lip 2 is integrally formed on the tip edge of the suction cup body 1. The lip 2 has a half-moon shape in which two arcs are connected at both ends to form a closed loop, and each lip 2 is a thin body extending obliquely at an angle of about 40 °. Two vacuum holes 4 are formed under each attachment hole 3, and the opening at the lower end of the vacuum hole 4 faces between the lips 2. That is, the space between the lips 2 is in communication with the decompression device, and the space between the lips 2 is a suction portion of a crescent-shaped suction cup. Therefore, this suction part is formed by connecting the circular suction parts of the conventional suction cup into a half-moon shape, and is much larger than the suction part of one conventional suction cup.

The work 6 is handled by the suction cup having such a structure. The work 6 is, for example, a mini compact disc having an outer diameter of 2.5 inches, and is taken out from the mold of the molding machine. Then, when molded by the mold, the sprue runner 61 vertically projects in the central portion of the work 6 away from the signal area.

Then, the mounting plate 5 is moved parallel to the mold surface at a position close to the mold surface to position the sprue runner 61 at the center of the suction cup body 1 and then in the mold surface direction. The suction portion between the lip 2 is pressed against the central portion of the work 6 apart from the signal area. Then, when a depressurizing device (not shown) is operated, it is adsorbed on the work 6 and can be taken out from the mold.

As described above, since the suction portion having a half-moon shape between the lips 2 is much larger than the suction portion of the conventional single suction cup, one suction cup has a strong suction force and a narrow suction range. The disk-shaped work 6 can be securely held by being strongly attracted to. Further, since the suction cup body 1 has an arcuate shape, it is possible to move the sprue runner 61 in the center of the suction cup body 1 by moving the suction cup body 1 in parallel with the die surface at a position close to the die surface. That is, regardless of the height of the sprue runner 61 extending vertically from the surface of the work 6, the work 6 can be adsorbed to the work 6 with a short stroke, so that the cycle time can be shortened.

[0013]

[Effect of the device]

 As described above, the work handling suction cup of the present invention has a large suction portion formed by forming a circular arc lip on the tip edge of the circular suction cup body as well. Even one work can be securely held with one suction cup. Also, when it is taken out from the molding machine, it can be adsorbed to the work with a short stroke, and the cycle time can be shortened.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a bottom view of the embodiment of the present invention.

FIG. 3 is a plan view of an embodiment of the present invention.

[Explanation of symbols]

 1 Sucker body 2 Lip 3 Mounting hole 4 Vacuum hole 5 Mounting plate 6 Work piece

Claims (1)

[Scope of utility model registration request] 1. A vacuum formed inside the suction cup body, wherein an arc-shaped lip that is in close contact with the surface of the work is integrally formed on the tip edge of the arc-shaped suction cup body made of highly flexible synthetic resin. A suction cup for work handling, characterized in that the opening of the hole faces the inside of the lip.