JP2009001344A - Conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveying device capable of avoiding complexity of structure, and preventing a molded article from being damaged during conveying. <P>SOLUTION: The conveying device is equipped with a cup 51 for conveying capable of storing the molded article T, and a guide pipeline 52 for guiding the cup 51 for conveying from a storage position (P) capable of storing the molded article T in the inside to a discharge position (Q) capable of discharging the molded article T to the outside. The cup 51 for conveying discharges the molded article T to the outside by moving a bottom wall 512 upward in the discharge position (Q). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a conveying device that conveys a molded product obtained by compressing a powder raw material into a predetermined shape from a low position to a high position.

  In a powder compression molding machine that compresses a powder raw material into a predetermined shape in a housing, the molded product is sequentially moved from a higher position (upstream) to a lower position (downstream) in the process from the time it is molded until it is discharged out of the housing. ). Then, in order to measure a predetermined amount of the compression-molded molded product with a measuring device, or to carry the compression-molded molded product into a storage can or a transport can, it is discharged out of the housing. A conveying device is used for conveying the formed product from a low position to a high position.

  As an example of the conveying device, there is a device including a pipe line extending in the vertical direction and a bucket capable of moving up and down in the pipe line (for example, see Patent Document 1). This transport device includes a drive unit such as a chain extending from the lower end portion to the upper end portion of the pipeline, and moves the bucket up and down by driving the drive portion.

Further, as another aspect of the conveying device, the apparatus includes a pipe line extending in the vertical direction, a lift plate that can be moved up and down in the pipe line, and a drive unit that moves the lift plate up and down. A mode is also considered in which the lift plate is raised in the pipeline in the accumulated state.
JP-A-8-277023

  However, in the former case, a drive unit that extends from the lower end portion to the upper end portion in the pipeline is indispensable, so that the structure in the pipeline is complicated. On the other hand, in the latter case, it is possible to avoid complication of the structure in the pipeline, but when the lift plate is raised with the molded product stored on the lift plate, the molded product is placed on the inner surface in the pipeline. Since the rubbing is continued, there is a problem that the molded product is chipped or cracked during conveyance.

  The present invention has been made paying attention to such problems, and a main object thereof is to provide a transport device that can avoid the complication of the structure and prevent damage to the molded product during transport. There is.

  That is, the conveying device of the present invention conveys a molded product obtained by compressing a powder raw material into a predetermined shape from a low position to a high position, and has an opening that opens upward, and the molded product is A cup that can be housed, and a guide pipe that guides the cup from a housing position in which the molded product can be housed to a discharge position in which the molded product can be discharged to the outside. The molded product is discharged to the outside by moving the bottom wall upward at the discharge position.

  In such a case, it is not necessary to provide a belt or a chain in the guide pipe line as compared with the conventional bucket type, the structure can be simplified, and the molded product is transferred to the guide pipe line during conveyance. Therefore, the molded product can be prevented from being damaged during conveyance.

  In particular, the cup includes a cup body and the bottom wall capable of moving in the vertical direction within the cup body, and the guide pipe moves the cup from the storage position to the discharge position. If there is a stopper that restricts the upward movement of the cup main body and allows the upward movement of the bottom wall by contacting only the cup main body, Can be reliably moved upward, and the molded product can be discharged accurately.

  Further, if the bottom wall has an upper surface inclined at a predetermined angle, the molded product can be discharged smoothly and accurately.

  If the bottom wall moves within the cup body with the outer surface slidingly in contact with the inner surface of the cup body, the molded product bites between the outer surface of the bottom wall and the inner surface of the cup body. Can be prevented.

  As a preferred embodiment, there is an embodiment in which the bottom wall is movable upward by being pressed from below at the discharge position. In such an aspect, compared to an aspect in which the bottom wall is moved upward by pulling the bottom wall from the upper side, there is no need for a lifting member such as a wire on the upper surface side of the bottom wall. It is possible to ensure a good accommodation state of the molded product.

  Note that the powder in the present invention is an aggregate of minute individuals, and includes an aggregate of granules such as so-called granules and an aggregate of powders having a shape smaller than the granules.

  As described above, according to the present invention, the complexity of the structure is avoided, and the molded product is not rubbed against the inner wall of the guide pipe during the conveyance, thereby preventing the molded product from being damaged during the conveyance. Can do.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the conveying device 5 according to the present embodiment is connected to the powder compression molding machine 1 and conveys a molded product T molded by the powder compression molding machine 1 to the measuring device 6. .

  The powder compression molding machine 1 includes a casing 2 that shields the inside from the outside atmosphere, a powder compression molding mechanism 3 that is provided in the casing 2 and compresses and molds powder raw materials into a predetermined shape, and a powder compression At least a molded product discharge mechanism 4 for discharging the molded product T compression-molded by the molding mechanism 3 to the outside of the housing 2 is provided.

  Since the housing 2 has a structure substantially similar to that of a conventional one (see, for example, JP-A-2005-193297), detailed description thereof is omitted.

  The powder compression molding mechanism 3 also has substantially the same structure as that of a conventional one (see, for example, JP-A-2005-193297). Briefly, the powder compression molding mechanism 3 is arranged in the casing 2 so as to be rotatable via a rotating shaft, a die attached to the rotating plate and having a die hole, and arranged above and below the die. It is provided with an upper arm and a lower arm that can be moved along a direction orthogonal to the surface of the rotating disk, and the housing 2 is maintained in a reduced pressure state while the tip of the housing is inserted into the mortar. The powder raw material of the molded product T filled in the mortar hole is compression-molded by moving and pressing the upper punch and the lower punch in the direction of mutual contact.

  As shown in FIGS. 1 to 5, the molded product discharge mechanism 4 is a storage unit 41 that stores the molded product T discharged from the powder compression molding mechanism 3, and the product molded product T is a collection container (not shown). A normal discharge path 42 for discharging, a sampling discharge path 43 for discharging the molded product T for sampling to the measuring device 6, and a sampling cup that can accommodate a small amount of the molded product T out of the molded product T discharged from the storage unit 41. 44, a housing 45 in which the sampling cup 44 can be accommodated, a horizontal shaft 46 that pivotally supports the sampling cup 44, and a rotation angle adjustment unit 47 that can adjust the rotation angle of the horizontal shaft 46. A switching unit 48 that is switchable between a normal discharge path open state (H) in which the inlet of the normal discharge path 42 is opened and a sampling discharge path open state (I) in which the inlet of the sampling discharge path 43 is opened. It includes those were.

  The sampling cup 44 includes a cup body 441 having an opening 441a that opens in a predetermined direction, and a shaft attachment portion 442 having a shaft hole 442a into which the horizontal shaft 46 can be inserted. The opening shape of the cup body 441 may be any shape such as a circle, a polygon, or an ellipse. Then, by inserting the horizontal shaft 46 into the shaft hole 442 a with substantially no play, the sampling cup 44 can be rotated in synchronization with the horizontal shaft 46. In accordance with the rotation of the horizontal shaft 46, the sampling cup 44 has the opening 441 a directed obliquely upward at a predetermined angle and a receiving position (A) where a small amount of the molded product T can be stored, and the opening 441 a substantially above. The stable position (B) to be directed and the discharge position (C) from which the opening 441a is directed downward and the molded product T accommodated can be discharged. Each of these positions (A), (B), and (C) is defined by the rotation angle of the horizontal axis 46.

  The operation and action of the molded product discharge mechanism 4 having such a sampling cup 44 will be described.

  First, when discharging the molded product T for products, the sampling cup 44 is positioned at the discharge position (C), and the switching unit 48 is set to the normal discharge path open state (H) (see FIG. 5). In this state, all the molded products T discharged from the storage unit 41 are discharged to the normal discharge path 42 without being stored in the sampling cup 44.

  On the other hand, when discharging the molded product T for sampling, the sampling cup 44 is positioned at the storage position (A) while maintaining the switching portion 48 in the normal discharge path open state (H) (see FIG. 2). A small amount of the molded product T out of the molded product T discharged from the storage unit 41 in this state is accommodated in the sampling cup 44. At this time, since the sampling cup 44 positioned at the storage position (A) is inclined at a predetermined angle, the sampling cup 44 stores a molded product T having a volume of about 80%. Then, the molded product T that is not accommodated in the sampling cup 44 (including the molded product T overflowing from the sampling cup 44) is discharged to the normal discharge path 42.

  Next, the valve on the terminal end side of the reservoir 41 is closed to restrict the discharge of the molded product T from the reservoir 41 to the housing 45, and the sampling cup 44 is positioned at the stable position (B) (see FIG. 3). In this embodiment, since the sampling cup 44 is rotated from the storage position (A) to the stable position (B) in a state where the molded product T having a volume of about 80% is stored, the sampling cup 44 is stable from the storage position (A). It is possible to avoid a situation in which the molded product T accommodated in the sampling cup 44 is unexpectedly dropped from the sampling cup 44 at the time of turning to the position (B) and in the state of being positioned at the stable position (B).

  The switching portion 48 is switched from the normal discharge path open state (H) to the sampling discharge path open state (I) with a slight delay from the rotation of the sampling cup 44 from the storage position (A) to the stable position (B). The sampling cup 44 is positioned at the discharge position (C) (see FIG. 4). As a result, a small amount of the molded product T is discharged from the sampling cup 44 and discharged to the sampling discharge path 43.

  Therefore, the transport device 5 according to the present embodiment transports the molded product T discharged to the sampling discharge path 43 to the measuring device 6.

  The transport device 5 can discharge the molded product T from the storage cup 51 for storing the molded product T discharged from the sampling discharge path 43 and the storage position (P) for receiving the molded product T. And a guide pipe 52 for guiding to the discharge position (Q).

  As shown in FIGS. 6 to 9, the transport cup 51 has a cup body 511 having an opening 511 a that opens upward, a bottom wall 512 that can move in the cup body 511 in the vertical direction, and the bottom wall 512. A cup body rotation restricting portion 513 that restricts the rotation of the cup body 511 is provided.

  The cup main body 511 has a side wall 511b that circulates and has a cylindrical shape that penetrates in the vertical direction. In the present embodiment, a cylindrical body is applied as the cup body 511.

  The bottom wall 512 has a normal position (R) in which the upper surface 512a is positioned below the opening 511a of the cup body 511, and a raised position (S) in which the upper surface 512a is positioned at or above the opening 511a of the cup body 511. Can be moved up and down. The upper surface 512a of the bottom wall 512 is inclined at a predetermined angle. The bottom wall 512 moves in the cup main body 511 in a state where the outer side surface 512b is in sliding contact with the inner side surface of the side wall 511b of the cup main body 511.

  The cup body rotation restricting portion 513 includes a key groove 511c formed on the side wall 511b of the cup body 511 and extending in the vertical direction, and a pin 512P provided on the lower end side of the bottom wall 512 and guided by the key groove 511c. It is provided.

  The pin 512P has a longitudinal dimension larger than the diameter of the bottom wall 512, and one end portion 512Pa is accommodated in the key groove 511c. The pin 512P includes a projecting element 512Pb that is biased outward by a biasing member (not shown) at the other end. When the bottom wall 512 is positioned at the normal position (R), the projecting element 512Pb is elastically engaged with a recess 511d formed on the side wall 511b of the cup body 511.

  The cup body 511 and the bottom wall 512 are made of synthetic resin.

  On the other hand, as shown in FIG. 7 and the like, the guide pipe 52 that guides the movement of the transport cup 51 is connected to the pipe main body 521 having a side wall 521a that extends in the vertical direction and circulates, and the sampling discharge path 43. The molded product receiving port 522 is provided. A joint member 524 having a molded product discharge port 523 is attached to the upper end portion of the pipe body 521. When the transport cup 51 is moved to the joint member 524 from the accommodation position (P) to the discharge position (Q), the cup body 511 is brought into contact only with the cup body 511 to restrict the upward movement of the cup body 511. In addition, a stopper 525 that allows the bottom wall 512 to move upward is provided. The stopper 525 is made of synthetic resin. In addition, the sight glass 526 which can visually recognize the cup 51 for conveyance from the outside is attached to the joint member 524. The sight glass 526 is attached to the joint member 524 via a packing 527.

  Moreover, the conveying apparatus 5 is provided with the drive part 53 which moves the bottom wall 512 to an up-down direction.

  In the present embodiment, an air cylinder that pushes up the bottom wall 512 from below is applied as the drive unit 53.

  Next, the operation and action of the transport device 5 will be described.

  First, when the molded product T discharged from the sampling discharge path 43 is received by the transport cup 51, the transport cup 51 is positioned at the accommodation position (P) and the bottom wall 512 is positioned at the normal position (R). (See FIGS. 6 and 7). In this state, the sampling molded product T discharged from the sampling discharge path 43 is accommodated in the transport cup 51. Further, in a state where the bottom wall 512 is positioned at the normal position (R), the keyway 511 c formed in the cup body 511 is covered with the outer side surface 512 b of the bottom wall 512. This prevents the molded product T from being caught in the keyway 511c. In this embodiment, since only a small amount of the molded product T is discharged to the sampling discharge path 43 by the action of the molded product discharge mechanism 4, the molded product T accommodated in the transport cup 51 is also small. Needless to say.

  Next, the drive unit 53 is driven in a state where the molded product T is housed in the transport cup 51, and the transport cup 51 is raised to the discharge position (Q) while the bottom wall 512 is maintained at the normal position (R). . When the transport cup 51 rises to the discharge position (Q), the upper end portion of the cup body 511 comes into contact with the stopper 525, and further upward movement is restricted (see FIG. 8). On the other hand, at the discharge position (Q), the bottom wall 512 is pressed from below by the drive unit 53 and moves from the normal position (R) to the lift position (S) (see FIG. 9). Specifically, the projecting element 512Pb of the pin 512P gets over the concave portion 511d formed on the side wall 511b of the cup body 511 by the pressing force of the driving unit 53, and the one end portion 512Pa of the pin 512P is engaged with the key groove 511c. In the combined state, the bottom wall 512 moves to the raised position (S). At this time, the bottom wall 512 moves in the cup body 511 in a state where the outer surface 512b is in sliding contact with the inner surface of the side wall 511b of the cup body 511. By moving the bottom wall 512 from the normal position (R) to the raised position (S), the molded product T is discharged to the outside of the cup body 511 and discharged from the molded product discharge port 523 to the measuring device 6. At this time, since the upper surface 512 a of the bottom wall 512 is inclined at a predetermined angle, the molded product T is smoothly discharged toward the molded product discharge port 523. When the bottom wall 512 is moved from the normal position (R) to the raised position (S), one end portion 512Pa of the pin 512P comes into contact with the upper end portion 511ca of the key groove 511c, so that the bottom wall with respect to the cup body 511 is removed. Further upward movement of 512 is restricted.

  When the drive unit 53 is driven after the molded product T is discharged to the outside of the cup body 511, the friction coefficient between the side wall 511b of the cup body 511 and the side wall 521a of the guide pipe line 52 is changed to the protrusion 512Pb of the pin 512P. Since the friction coefficient with the side wall 511b of the cup body 511 is set to be smaller, the transport cup 51 is lowered to the accommodation position (P) while the bottom wall 512 is maintained at the raised position (S). When the transport cup 51 is lowered to the storage position (P), the lower end portion of the cup body 511 is brought into contact with a cradle 528 (see FIG. 6) provided on the lower end portion side of the guide pipe line 52 and further moved downward. Is regulated. Then, the bottom wall 512 is pulled downward by the drive unit 53 and moves from the raised position (S) to the normal position (R) (see FIG. 6).

  As described above, the transport device 5 according to the present embodiment includes the transport cup 51 that can store the molded product T, and the transport cup 51 from the storage position (P) in which the molded product T can be stored. And a guide pipe 52 that guides T to a discharge position (Q) where it can be discharged to the outside, and the cup 51 discharges the molded product T by moving the bottom wall 512 upward at the discharge position (Q). Therefore, it is not necessary to provide a belt or a chain in the guide conduit 52 as compared with the bucket type, and the molded product T is prevented from rubbing against the inner surface of the side wall 521a of the guide conduit 52. The occurrence of defective products can be suppressed.

  In particular, when the guide pipe 52 moves the transport cup 51 from the storage position (P) to the discharge position (Q), the guide pipe line 52 abuts only on the cup body 511 and restricts the upward movement of the cup body 511. In addition, since the stopper 525 that allows the upward movement of the bottom wall 512 is provided, only the bottom wall 512 can be reliably moved upward by the stopper 525, and damage to the molded product T during conveyance can be prevented. Can be prevented.

  Furthermore, since the bottom wall 512 is obtained by inclining the upper surface 512a by a predetermined angle, the molded product T can be smoothly and accurately discharged to the molded product discharge port 523.

  Further, since the bottom wall 512 moves in the cup body 511 in a state where the outer surface 512b is in sliding contact with the inner surface of the side wall 511b of the cup body 511, the outer surface 512b of the bottom wall 512 and the cup body 511 It is possible to prevent the molded product T from being caught between the side wall 511b.

  Since the bottom wall 512 is movable upward by being pressed from below at the discharge position (Q), the bottom wall 512 is compared with an aspect in which the bottom wall 512 is moved upward by pulling the bottom wall 512 from above. Since no lifting member such as a wire is required on the upper surface 512a side, the molded product T cannot interfere with the lifting member, and a good accommodation state of the molded product T can be ensured.

  In addition, in the present embodiment, the powder compression molding machine 1 having a sealed structure in which the downstream end (molded product receiving port 522) and the upstream end (molded product discharge port 523) of the conveying device 5 are respectively shut off from the internal space. Since the transfer device 5 is connected to the measuring device 6, the transfer device 5 itself has a sealed structure in which the internal space is shut off from the outside, and the transfer device 5 can be cleaned without being disassembled.

  The present invention is not limited to the embodiment described in detail above.

  For example, the inclination angle of the upper surface of the bottom wall is set to an angle at which the upper surface forms a substantially straight line with the molded product receiving port at the storage position, or an angle at which the upper surface portion forms a substantially straight line with the molded product discharge port at the discharge position. Also good. With such an inclination angle, the molded product can be received and discharged more smoothly. Note that the top surface of the bottom wall may be substantially horizontal.

  Further, as the drive unit for driving the bottom wall in the vertical direction, for example, an actuator or the like other than the air cylinder may be applied.

  Further, the bottom wall may be moved upward by pulling it from above with a lifting member such as a wire.

  Moreover, you may apply the conveying apparatus which concerns on this invention as a thing for carrying in into the can body for storage or the can body for conveyance the compression molded product.

  Moreover, in the said embodiment, although the guide pipe line 52 which the pipe line main body 521 extended | stretched along a perpendicular direction was illustrated, you may apply the guide pipe line which a pipe line main body extends toward the predetermined angle diagonally upward. . In particular, if the extending direction of the pipe main body is set to a direction substantially orthogonal to the opening direction of the molded product receiving port 522, it is excellent in workability and can reduce the manufacturing cost of the conveying device. .

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall schematic diagram illustrating a state in which a conveyance device according to an embodiment of the present invention is connected to a powder compression molding machine. The figure which abbreviate | omits and shows the molded article discharge | emission mechanism which positioned the sampling cup in the accommodation position in the same embodiment. The figure which shows the sampling cup located in the stable position corresponding to FIG. The figure which shows the sampling cup located in the discharge | release position corresponding to FIG. The figure which shows the sampling cup located in the discharge | release position corresponding to FIG. The figure which abbreviate | omits and shows a principal part expanded cross section of the conveying apparatus which concerns on the same embodiment. The figure which shows the operation state of the conveying apparatus which concerns on the same embodiment. The figure which shows the operation state of the conveying apparatus which concerns on the same embodiment. The figure which shows the operation state of the conveying apparatus which concerns on the same embodiment.

Explanation of symbols

5 ... Conveyor 51 ... Cup (conveying cup)
511 ... Cup body 511a ... Opening 512 ... Bottom wall 512a ... Upper surface 512b ... Outer surface 52 ... Guide conduit 525 ... Stopper T ... Molded product

Claims (5)

A conveying device that conveys a molded product obtained by compressing a powder raw material into a predetermined shape from a low position to a high position,
A cup that has an opening that opens upward and can accommodate the molded article;
A guide pipe for guiding the cup from an accommodation position in which the molded product can be accommodated to a discharge position where the molded product can be discharged to the outside;
The conveying device, wherein the cup discharges the molded product to the outside by moving the bottom wall upward at the discharge position. The cup is provided with a cup body and the bottom wall movable in the vertical direction within the cup body,
When the guide pipe moves the cup from the storage position to the discharge position, the guide pipe abuts only on the cup main body to regulate the upward movement of the cup main body and to the upper side of the bottom wall. The transport apparatus according to claim 1, further comprising a stopper that allows movement. The transport apparatus according to claim 1, wherein the bottom wall has a top surface inclined at a predetermined angle. The conveying device according to claim 1, 2 or 3, wherein the bottom wall moves in the cup body with the outer surface slidingly contacting the inner surface of the cup body. The transport apparatus according to claim 1, 2, 3, or 4, wherein the bottom wall is movable upward by being pressed from below at the discharge position.

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