JPH0553766U - Parallel open / close type chuck device for molding machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a simple and efficient chuck device. [Configuration] Knuckle support shaft 5 of each link 58A, 58B
6 and the arm support portions 60A and 60B for the shaft support portion and the pin coupling portion are provided with elongated holes 64A, 64B and 6 respectively.
6A and 66B, the link bending portion is formed in the frame body 5.
The shafts are pivotally attached to fixed shafts 68A and 68B provided on the second shaft 2, and each link is configured to be swingable around the fixed shaft. On the other hand, the orthogonal guide bars 70, 7 provided with the arms 62A, 62B on the frame body.
It is configured so that it can be moved in parallel with each other by being inserted into 2. As a result, the grip claws 22A, 22 held facing each other on the arm
B operates accurately regardless of the diameter of the biscuit 24 without causing misalignment of the biscuit.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a chuck device for taking out a molded product for a die casting machine, an injection molding machine or the like, and more particularly to a parallel open / close chuck device.

[0002]

[Prior Art]

 Generally, this type of chuck device is constituted by a parallel movement type horizontal opening / closing type or a toggle type vertical opening / closing type. These will be briefly described below.

First, a horizontal opening / closing chuck device 10 (see FIG. 3, hereinafter referred to as a parallel opening / closing chuck device) is a first reciprocating piston whose one end is fixed to an operating rod 14 of a cylinder 12. 16A and a second piston 16B which is arranged parallel to the piston 16A and reciprocates in the opposite direction via the swing connection lever 18, and the other ends of the two pistons 16A and 16B are provided. The gripping claws 22A and 22B are configured so as to be laterally opposed to each other via holding tools 20A and 20B, respectively. Therefore, according to such a configuration, by reciprocating both pistons 16A and 16B in opposite directions via the cylinder 12, both gripping claws 22A and 22B are moved forward and backward in parallel in the horizontal direction as indicated by the arrow. The cylindrical holding portion of the molded product, that is, the biscuit 24 can be gripped.

Next, a toggle type vertical opening / closing chuck device 26 (see FIG. 4; hereinafter simply referred to as a toggle type chuck device. In the figure, the same components as those in FIG. 3 are designated by the same reference numerals. Is composed of a pair of upper and lower open / close arms 30A and 30B which are connected to the operating rod 14 of the cylinder 12 via toggle links 28, and are held at the respective free ends of the open / close arms 30A and 30B. The grip claws 22A and 22B are configured to be vertically opposed and held via the part / spacers 32A and 32B. Therefore, according to such a configuration, by opening and closing both opening / closing arms 30A, 30B around the support shafts 34A, 34B via the cylinder 12, both gripping claws 22A, 22B are moved vertically as indicated by the arrows. The biscuit 24 can be gripped by opening and closing.

[0005]

[Problems to be solved by the device]

 However, each of the above-mentioned conventional chuck devices has the following drawbacks, and improvements thereof have been demanded.

That is, first, as shown in FIG. 5, the horizontal opening / closing chuck device 10 has a horizontal opening / closing mechanism to carry out the molded product 36. Therefore, the chuck device 10 is first placed on the front side of the molded product. After advancing, the biscuit 24 must be gripped by moving left and then right, and then retracted to carry out this molded product. Therefore, a relatively large work space is required, and a relatively large unloading device 42 having a reversing mechanism 38, a traverse cylinder 40, etc. is usually required. In addition, reference numerals 44 and 46 in the drawing indicate a fixed mold and a movable mold, respectively.

On the other hand, as can be seen from FIG. 4, the toggle type chuck device 26 has a simple structure and a small working space as compared with the above-mentioned chuck device, and it is obvious that the working space is also small. Therefore, as shown by a chain line in FIG. 5, the chuck device 26 can be advanced and grasped from the side of the biscuit 24. That is, the work space is reduced and the carry-out cycle time is shortened.

However, in the chuck device 26 of this type, as shown by the chain line in FIG. 4, when the diameter of the biscuit 24 changes, the gripping center itself moves and the grasping force itself also changes. There are difficulties. For this reason, this type of chuck device 26 is provided with a large number of replaceable spacers 32A, 32B for the gripping claws 22A, 22B in order to solve the above-mentioned drawbacks. Was a cumbersome task and required a considerable amount of time.

As described above, the conventional chucking device requires a large work space and a long cycle time in the former chucking device 10, while a large number of replacement spacers are required in the latter chucking device 26, and The replacement also required complicated work and a considerable amount of time.

Therefore, an object of the present invention is to provide a parallel opening-and-closing type chuck device for a molding machine, which reduces a working space and a cycle time, and does not require a special replacement part. Especially.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, a parallel opening and closing type chuck device for a molding machine according to the present invention comprises a knuckle supported reciprocally on a frame, and a support shaft provided on the knuckle, one end of which is a shaft. A pair of substantially L-shaped links that support and are arranged symmetrically to the outside of the knuckle, a pair of parallel arms that are pin-coupled to the free other ends of the links, and the arms. The pair of gripping claws are attached so as to face each other on the free other end of the link, and the link loosely fits and / or slides the shaft support part with the knuckle and the pin coupling part with the arm. The L-shaped bending portion is pivotally mounted on a fixed shaft provided on the frame body so as to be swingable, and the arm is fixed so that its main body is orthogonal to the arm provided on the frame body. Can be inserted in the guide bar and opened and closed in parallel with each other Configured, thereby characterized in that arranged to open and close parallel the knuckle reciprocates each other physician the gripping claw.

In this case, the gripping claw can be configured to open and close in parallel in the vertical direction with respect to the molding machine, and the fixed guide bar can be configured by two parallel guide bars.

[0013]

[Action]

 In the chuck device of the present invention, the arm for gripping the gripping claw operates substantially in the form of a toggle link by the knuckle and the link, and the arm is translated by the guide bar. That is, according to the present invention, the advantages of the toggle type chuck device and the advantages of the horizontal open / close type chuck device are achieved at the same time.

Therefore, the work space can be reduced and the cycle time can be shortened, and at the same time, the spacer replacement work when changing the molded product becomes unnecessary.

[0015]

【Example】

 Next, an embodiment of a parallel opening and closing chuck device for a molding machine according to the present invention will be described in detail below with reference to the accompanying drawings. For convenience of explanation, the same components as those of the conventional structure shown in FIGS. 3 to 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

1 and 2, a parallel open / close chuck device 50 of the present invention basically comprises a knuckle 54 which is reciprocally supported on a frame 52 via a cylinder 12 and an operating rod 14. , A pair of substantially L-shaped links 58A, 58B which are supported at one end on a support shaft 56 provided on the knuckle 54 and symmetrically arranged outward of the knuckle 54, and the link 58A. , 58B respectively parallel to the free ends of the arms 58A, 58B, respectively, via a pair of pins 60A, 60B. A pair of gripping pawls 22 mounted opposite each other on the free ends of the arms 62A, 62B. It is composed of A and 22B. The pins 60A and 60B are fixed on the arms 62A and 62B, respectively (see FIG. 2).

However, in each of the links 58A and 58B, a shaft support portion for the knuckle support shaft 56 and a pin coupling portion for the arm pins 60A and 60B are pivotally attached to the elongated holes 64A and 64B, respectively. It is configured to be able to swing around. On the other hand, the arms 62A and 62B are configured such that their main body portions are inserted into two fixed guide bars 70 and 72 which are orthogonal to the arms provided on the frame body 52, and thereby open and close in parallel with each other. ..

Therefore, according to the chuck device 50 of the present invention, when the knuckle 54 is retracted to the left in the drawing through the cylinder 12 in the state shown by the solid line, for example, the links 58A and 58B are respectively fixed shafts. 68A and 68B are swung so that their free ends approach each other, whereby the arms 62A and 62B are guided by the guide bars 70 and 72 and move in parallel with each other. As a result, the grip claws 22A and 22B move up and down. As shown by the chain line, the biscuits 24 having a small diameter, which are close to each other in the direction parallel to each other, operate normally and reliably, that is, with a strong gripping force without causing misalignment.

As described above, since the chuck device of the present invention does not require a complicated and large piston means unlike the horizontal opening / closing chuck device, the entire device becomes simple and small, and the space is reduced. At the same time, the cycle time is shortened. On the other hand, since the gripping claws are opened and closed in parallel to the upper and lower sides, in other words, there is no misalignment due to the diameter of the biscuit (the size of the molded product) as in the toggle chuck device. The complicated spacer replacement work is unnecessary. Therefore, it is possible to provide a simple and efficient chuck device with a relatively simple configuration.

The present invention has been described above with reference to a preferred embodiment, but the present invention is not limited to the above embodiment, and many design changes can be made without departing from the spirit thereof. For example, the moving direction of the grip claws may be horizontal, and the guide bar of the arm may be a single bar.

[0021]

[Effect of the device]

 As described above, the parallel opening / closing chuck device for a molding machine of the present invention comprises a knuckle that is reciprocally moved, a pair of links that are axially supported by the knuckle, a pair of arms that are pin-coupled to the links, and the arms. In the chuck device consisting of a pair of gripping claws attached facing each other on the upper side, the link is rocked by reciprocating the knuckle to move the arm in parallel. The respective advantages with the profile chuck device are achieved simultaneously. That is, according to the present invention, the entire device is simple and compact, the space is reduced, the cycle time is shortened, and even if the molded product (biscuit) is changed, the gripping claw does not deviate. No need for complicated setup changes (spacer replacement work for gripping claws). Thus, it is possible to provide a simple and efficient chuck device.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a parallel open / close chuck device for a molding machine according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a front view showing a conventional horizontal open-close chuck device.

FIG. 4 is a front view showing a conventional toggle type vertical opening / closing chuck device.

5 is an overall side view showing a gripping and carrying-out operation of a molded product by the horizontal opening / closing chuck device shown in FIG.

[Explanation of symbols]

12 cylinder 14 operating rod 22A, 22B gripping claw 24 biscuit 50 parallel open / close type chuck device 52 frame 54 knuckle 56 support shaft 58A, 58B link 60A, 60B pin 62A, 62B arm 64A, 64B oblong hole 66A, 66B oblong hole 68A, 68B Fixed shaft 70,72 Guide bar

Claims (3)

[Scope of utility model registration request] 1. A knuckle reciprocally supported on a frame, and a pair of one ends of which are pivotally supported on a support shaft provided on the knuckle and which are arranged symmetrically to the outside of the knuckle. A substantially L-shaped link, a pair of mutually parallel arms pin-coupled to the free other ends of the links, and a pair of grips oppositely attached to the free other ends of the arms. The link is formed of a claw, and the link has a knuckle, the shaft support portion, and the arm, the pin coupling portion formed to be freely fit and / or slidable, and the L-shaped bending portion is provided on the frame body. The arm is pivotally attached to the arm so that the main body of the arm is inserted into a fixed guide bar orthogonal to the arm provided on the frame so that the arm can be opened and closed in parallel with each other, thereby reciprocating the knuckle. The gripping claws Molding machine toggle-link parallel switching models chuck apparatus characterized by configured to row connection. 2. The parallel opening / closing chuck device for a molding machine according to claim 1, wherein the gripping claws are opened and closed in parallel with respect to the molding machine in a vertical direction. 3. The parallel opening / closing type chuck device for a molding machine according to claim 1, wherein the fixed guide bar is composed of two parallel guide bars.