JP5247275B2 - Molded product adsorption device - Google Patents

Description

  The present invention relates to a molded product adsorption device that picks up and holds a molded product from the mold of a resin molding machine. Specifically, when a large molded product that is particularly heavy is absorbed and taken out, it is adsorbed to the large molded product. While the member is securely sucked and held, when the molded product is moved from the mold to the open position, it is possible to reliably remove the molded product by preventing the suction state from being released due to vibration during movement. The present invention relates to a molded product adsorption device.

  As a molded product suction device provided in a molded product take-out machine, for example, as shown in Patent Document 1, a plurality of shaft members having a hollow large-diameter portion to which a suction member is attached to a tip portion are slid in an axial direction on a chuck plate. There is known a structure in which a spring is mounted on each shaft member positioned between the front surface of the chuck plate and the hollow large-diameter portion while being supported so as to move.

  In the molded product suction device, the chuck member is further moved to the molded product side while the suction member is in contact with the molded product in the mold, and the shaft member is resisted against the elastic force of the spring. By moving to the opposite side, the suction member is pressed against the molded product with a pressure corresponding to the elastic force of the spring, and is attracted to the molded product by reliably adsorbing the suction member to the molded product. It is possible to prevent the molded product from dropping and reliably take out the molded product.

  However, in the above-described molded product suction device, when the molded product is extracted from the mold, the pressing of the suction member against the molded product is released, and the shaft member is moved to the molded product side by the elastic force of the spring. As a result, the distance between the chuck plate and the molded product becomes longer, and it is necessary to move the chuck plate with a long stroke. That is, there is a problem that it takes time to move the chuck plate and the cycle of taking out the molded product becomes long.

In addition, when the molded product sucked and held by the suction member is moved from the mold position to the open position, the shaft member returns to the original position due to the elastic force of the spring as described above, and the distance from the chuck plate increases. Thus, the molded product that is sucked and held by vibration during movement is likely to vibrate greatly. The shaft member is pivotally supported in a loosely fitted state with respect to the chuck plate so as to be movable in the axial direction with respect to the chuck plate. When the molded product suction device is moved, there is a problem that the molded product that is sucked and held by the backlash of the shaft member with respect to the chuck plate is likely to vibrate.
As a result, at the time of movement, there is a problem that an adsorption failure occurs in a part and the moving posture of the molded product is disturbed, or in the worst case, the molded product falls and a removal failure occurs.

In particular, in a large-sized molded product having a heavy weight, such as a vehicle bumper or a vehicle panel, the above-mentioned problem is likely to appear remarkably, causing a defective take-out of the molded product.
When the holding posture of the molded product is disturbed during the movement, the molded product cannot be opened in a predetermined posture at the open position. For this reason, delivery of the molded product in an open position cannot be performed reliably, and work efficiency has deteriorated.
JP 2003-11184 A

The problem to be solved is that when extracting the molded product from the mold, it is necessary to move the chuck plate with a long stroke, which takes a long time to move the chuck plate and lengthens the cycle of taking out the molded product. It is in. Further, when the molded product sucked and held by the suction member is moved from the mold position to the open position, the molded product is easily vibrated and the distance from the chuck plate is increased due to the backlash of the shaft member with respect to the chuck plate. The vibration at the time of movement is amplified and the molded product vibrates greatly, and the moving posture of the molded product is disturbed due to poor suction, or the product is taken out due to dropping.

The present invention relates to a molded product suction device for sucking and holding a molded product held in a mold by suction means provided on the mounting member and taking it out from a resin molding machine. A shaft member supported so as to be movable in a direction approaching and separating from the molded product, a suction member provided on the distal end side of the shaft member facing the mold and connected to the negative pressure generating means, and an attachment member A spring member that is mounted on a shaft member located between the adsorbing members and that normally biases the adsorbing member away from the mounting member; and a shaft member that protrudes in the direction opposite to the mold relative to the mounting member. A stopper member that is disposed so as to face the outer peripheral surface and that presses against the outer peripheral surface of the shaft member and restricts the return of the spring member compressed by the movement of the mounting member , and a position at which the stopper member approaches the outer peripheral surface of the shaft member And away Characterized in that comprising the actuating member to move between the location.

According to the present invention, when a molded product is extracted from the mold, the moving stroke can be shortened to shorten the cycle of taking out the molded product. In addition, when the molded product sucked and held by the suction member is moved from the mold position to the open position, the shaft member is prevented from rattling with respect to the mounting member, and the interval between the mounting member and the suction member is shortened to vibrate, etc. The ratio of the amplification of the product can be reduced to avoid the occurrence of poor suction, and the molded product can be taken out reliably.

In the present invention, the suction means is provided on the distal end side of the shaft member that is supported so as to be movable in the direction approaching and separating from the molded product in the mold relative to the mounting member, and the shaft member facing the mold. And a suction member connected to the negative pressure generating means, a spring member attached to a shaft member located between the attachment member and the suction member, and an outer periphery of the shaft member protruding in the opposite direction to the mold with respect to the attachment member A stopper member that is disposed so as to face the surface and is in pressure contact with the outer peripheral surface of the shaft member, and the stopper member is configured to move between a position approaching the outer peripheral surface of the shaft member and a position separating from the position. Is the best mode.

The present invention will be described below with reference to the drawings showing embodiments.
As shown in FIGS. 1 to 3, the molded product adsorption device 1 is mounted on a molded product take-out machine (none of which is shown) provided in the resin molding machine. The molded product take-out machine has a known structure, a main body having a base fixed to a fixed-side platen of the resin molding machine and a length perpendicular to the axis of the resin molding machine from the mold to an open position outside the resin molding machine. A frame, a traveling body supported on the main body frame so as to be movable in the direction perpendicular to the axis, and provided with a front and rear frame extending in the axial direction of the resin molding machine on the mold side, and the above on the front and rear frame The front / rear traveling body is supported so as to be movable in the axial direction, and the upper / lower frame is supported by the front / rear traveling body so as to be movable in the vertical direction, and is provided with the molded product suction device 1 in the lower part. The molded product take-out machine moves the molded product adsorption device 1 three-dimensionally with each movement of the traveling body, the front and rear traveling body, and the upper and lower frames to remove the molded product from the mold of the resin molding machine. Remove to the open position.

  In addition to the structure described above, the molded product take-out machine is a lateral running type in which the molded product suction device 1 is moved between the side of the resin molding machine and the mold position to take out the molded product, and the molded product suction device. Any of the swiveling types in which 1 is swung between the opening position and the mold position to take out the molded product may be used.

  As described above, the molded product adsorption device 1 is a mounting member 3 that combines a chuck plate, a prismatic frame, or a cylindrical pipe that is attached to the lower part of the upper and lower frames (the figure shows an example in which the mounting member 3 is configured as a cylindrical pipe). On the other hand, it has a structure in which a plurality of suction means 7 corresponding to the suction points of the molded product 5 are attached. The fixing bracket 9 of each suction means 7 is inserted into the mounting member 3 to form a fixing hole 11 having an axis in the vertical direction and a mounting hole 13 having an axis in the horizontal direction. A shaft support sleeve 15 as a shaft support member is inserted and fixed.

A shaft member 17 having an axial line in the horizontal direction and having a hollow portion extending in the axial direction therein is supported on the shaft support sleeve 15 so as to be slidable in the axial direction. On the outer peripheral surface of the shaft member 17, a large number of engaging grooves 17a extending in the circumferential direction as engaging portions are formed at equal intervals in the axial direction. The shaft member 17 has a mounting opening 21a at the tip end (on the mold side) that communicates with the hollow portion and to which a suction pad 19 as a suction member formed of silicon rubber or the like is replaceably attached. The cap member 21 is fixed.

Further, at the rear end portion of the shaft member 17, there is a fixing member 27 that communicates with the hollow portion and that fixes the end portion of the tube 23 connected to the negative pressure generating means (not shown) via the nozzle 25. Fixed. The fixing member 27 also functions as a stopper for restricting the shaft member 17 from coming out of the fixing fitting 9.

A ring plate 29 is inserted into the shaft member 17 located on the molded product 5 side from the fixing bracket 9 so as to be movable in the axial direction, and the shaft member 17 located between the ring plate 29 and the base member 21 includes A second spring member 33 is mounted on the shaft member 17 where the first spring member 31 and the ring plate 29 and the fixture 9 are located. The first and second spring members 31 and 33 may be any case where the spring elastic force is the same or different.

An operation member 35 such as an air cylinder or an electromagnetic solenoid having an axis in a direction orthogonal to the axis of the shaft member 17 is fixed to the back surface side of the fixing member 9, and the shaft of the shaft member 17 is attached to the shaft of the operation member 35. A stopper 37 is attached in pressure contact with the outer peripheral surface. A plurality of claws 37 a are formed on the inner surface of the stopper 37 as claw portions that engage with the engagement grooves 17 a of the shaft member 17.

Next, the adsorption holding action of the molded product by the molded product adsorption device 1 will be described.
After the moving body, the front and rear traveling bodies and the upper and lower frames are controlled to move the molded product suction device 1 relative to the molded product 5 held in the mold 39, the front and rear traveling body is controlled to move and the molded product suction device. 1 is moved to the mold 39 side, and each suction pad 19 in each suction means 7 is brought into contact with a predetermined portion of the molded product 5. The suction pad 19 of each suction means 7 is formed with a negative pressure by the connected negative pressure generating means. (See Figure 4)

When the molded product suction device 1 is further moved to the mold 39 side in the above state, the first and second spring members 31 and 33 are moved along with the sliding of the fixing bracket 9 with respect to the shaft member 17 to which the suction pad 19 is attached. The suction pad 19 is pressed against the molded product 5 with a pressure corresponding to the elastic force of the first and second spring members 31 and 33 by elastic compression . As a result, the suction pads 19 are brought into pressure contact with the molded product 5 with a pressure corresponding to the elastic force of the first and second spring members 31 and 33 to avoid suction failure. (See Figure 5)

Further, as the fixing member 9 slides with respect to the shaft member 17, the shaft end of the shaft member 17 on the side opposite to the suction pad 19 moves to the back side of the fixing member 9 according to the sliding stroke of the fixing member 9. When the sliding stroke reaches a required length, the operating member 35 is operated to press the stopper 37 against the outer peripheral surface of the shaft member 17 protruding to the back side of the fixing bracket 9. Thus a fixed bracket 19 fixed to the axis member 17 by engaging the claw 37a of the stopper 37 against the engaging groove 17a of the shaft member 17, the first and second spring members 31 and 33 which elastically compressed The return is restricted and held in the state shown in FIG.

Next, the molded product 5 is extracted from the mold 39 by moving the front and rear traveling bodies backward and moving the molded product suction device 1 in a direction away from the mold 39. Next, the upper and lower frames and the traveling body are moved back to move the molded product 5 sucked and held by the molded product suction device 1 from the mold position to the open position.

During this movement, the return of the shaft member 17 is restricted by the stopper 37 as described above, so that the molded product 5 is in a state of approaching the fixing bracket 9, that is, the shaft member 17 in the fixing bracket 9 and the suction pad 19. Adsorption holding is maintained in a state where the length of the is shortened. Further, since the shaft member 17 is biased by the elastic force of the first and second spring members 31 and 33 that are elastically deformed, the shaft member 17 is prevented from rattling with respect to the shaft support sleeve 15.

As a result, vibration is also generated in the molded product 5 that is sucked and held due to vibration or the like during movement of the molded product suction device 1, but the length of the shaft member 17 in the fixture 9 and suction pad 19 is short as described above. In addition, since the backlash of the shaft member 17 is prevented, the vibration during movement is minimized and the rate at which the vibration is amplified is reduced, so that the molded product 5 is vibrated greatly and the suction is released. Can be avoided.

That is, when a molded product is extracted from the mold, the conventional molded product suction device in which the shaft member returns to the original position is such that the shaft member 17 in the fixture 9 and the suction pad 19 becomes longer and the vibration is amplified. However, in the molded article adsorbing device 1 of the present embodiment, vibration can be reduced. (See Figure 7)

For this reason, when the molded product sucked and held by the suction pad 19 is moved from the mold 39 to the open position, the suction state is released by vibration or the like, and the taking-out posture of the molded product 5 is disturbed during the movement, or the suction failure Can be prevented from dropping, and the molded product removal operation can be executed reliably.

When the molded product suction device 1 is moved to a predetermined open position outside the resin molding machine, the operation of the operation member 35 is released, the stopper 37 is returned to the original position, and the movement restriction state of the shaft member 17 is released. Let As a result, the molded product 5 attracted and held by the suction 19 is moved to a position at a predetermined distance from the fixture 9 by the shaft member 17 that moves forward by the elastic force of the first and second spring members 31 and 33. It is done. The molded product 5 is taken out to the open position by releasing the suction by the suction pad 19 at this position.

The present invention can be modified as follows.
1. In the above description, the attachment member 3 of the molded product adsorption device 1 is configured in a pipe shape, but may be a metal chuck plate. In this case, the shaft support sleeve 15 is fixedly inserted and screwed into a through hole formed in the chuck plate, and the shaft member 17 is moved in the axial direction in the shaft support sleeve 15. It may be supported as follows.

2. In the above description, a large number of engagement grooves 17a are formed on the outer peripheral surface of the shaft member 17 at equal intervals in the axial direction, but the engagement grooves may be screw grooves.

3. In the above description, the suction member is formed with negative pressure through the hollow portion formed in the shaft member. However, the suction member is directly connected to the suction member provided at the tip of the shaft member. May be configured to be capable of forming a negative pressure.

It is a whole perspective view which shows the outline of the molded product adsorption | suction apparatus with which a molded product taking-out machine is mounted | worn. It is a perspective view which expands and shows a part of adsorption mechanism. FIG. 3 is a longitudinal sectional view taken along line AA in FIG. 2. It is explanatory drawing which shows the state which contact | abutted the adsorption member to the molded article. It is explanatory drawing which shows the state which press-contacted the adsorption member to the molded article. It is explanatory drawing which shows the movement control state of the shaft member by a stopper. It is explanatory drawing which shows the adsorption holding state of a molded article.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Molded product adsorption | suction apparatus 3 Mounting member 5 Molded product 7 Suction means 9 Fixing bracket 11 Fixing hole 13 Mounting hole 15 Shaft support sleeve 17 as a shaft support member Shaft member 17a Engagement groove 19 as an engaging part 19 Adsorption as an adsorption member Pad 21 Cap member 21a Mounting port 23 Tube 25 Connection nozzle 27 Fixing member 29 Ring plate 31 First spring member 33 Second spring member 35 Actuating member 37 Stopper 37a Claw 39 Claw 39 Mold

Claims (9)

In the molded product adsorption device that holds the molded product held in the mold by adsorption means provided on the mounting member and takes it out of the resin molding machine,
The adsorption means is
A shaft member supported so as to be movable in a direction approaching and separating from a molded product in the mold with respect to the mounting member;
An adsorbing member provided on the tip side of the shaft member facing the mold and connected to the negative pressure generating means;
A spring member that is mounted on a shaft member positioned between the attachment member and the adsorption member, and that normally biases the attachment member away from the attachment member;
A stopper that is disposed so as to face the outer peripheral surface of the shaft member that protrudes in the opposite direction to the mold with respect to the mounting member, and that presses against the outer peripheral surface of the shaft member and restricts the return of the spring member compressed by the movement of the mounting member Members,
An actuating member that moves the stopper member between a position approaching the outer peripheral surface of the shaft member and a position separating the stopper member;
Molded product adsorption device consisting of 2. The molded product suction apparatus according to claim 1, wherein the attachment member is constituted by at least one of a pipe and a prismatic frame, and the suction means is fixed to either the pipe or the prismatic frame by a fixing bracket. 2. The molded product according to claim 1, wherein the attachment member is formed of a plate-like body, and the shaft member is supported so as to be movable in the axial direction on a shaft support member inserted into a through hole formed in the plate-like body. Adsorption device. 2. The shaft member according to claim 1, wherein the shaft member has a hollow portion extending in the axial direction, and a suction member is provided at the front end portion and a negative pressure generating means is connected to the rear end portion so that the molded product can be sucked by the suction member. Molded product adsorption device. 2. The molded product adsorption device according to claim 1, wherein a negative pressure generating means is connected to an adsorption member provided at a tip of the shaft member, and the adsorption of the molded product by the adsorption member is enabled. 2. The molded product adsorption device according to claim 1, wherein the shaft member is provided with a single spring member. 2. The molded product adsorption apparatus according to claim 1, wherein a plurality of spring members having the same elastic force are attached to the shaft member. 2. The molded product adsorption apparatus according to claim 1, wherein the shaft member is provided with a plurality of spring members having different elastic forces. In claim 1, on the outer peripheral surface of the shaft member, a plurality of engaging portions extending in the circumferential direction are provided at predetermined intervals in the axial direction, and the stopper is provided with a claw portion that engages with the engaging portion. A molded product suction device that restricts return of a spring member compressed by movement of an attachment member by engaging a claw portion with an engagement portion when a stopper is pressed against an outer peripheral surface of a shaft member.

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