JP2007021517A - Carrying apparatus, carrying method, and press forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying apparatus which is excellent in the repeatability and the accuracy of carrying quantity, and can continuously carry materials into the inside of a die without deteriorating the consistency of the positioning of the die and a strip material, and further to provide a carrying method and a press forming apparatus. <P>SOLUTION: A feed pin 13a is arranged such that its tip end is located between the carrying position and the pressing position. A moving section 8 moves the feed pin 13a toward the left side by a required distance when a second die 3 has ascended and only the feed pin 13a has penetrated an opened portion formed on the strip material 17a. The strip material 17a is carried toward the left side integrally with the feed pin 13a. Further, only the feed pin 13a is returned toward the right side when the second die 3 has descended together with the strip material 17a and only the positioning pin 10 of the second die 3 has penetrated the opened portion of the strip material 17a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transport device, a transport method, and a press molding device. More specifically, the present invention relates to a tape member having a long tape shape and having a plurality of apertures formed at predetermined intervals. The present invention relates to a conveying apparatus, a conveying method, and a press molding apparatus.

  Conventionally, as a feeding device for feeding a plate material to a press device, a linear reciprocating motion is converted into a rotational motion of a roller, the plate material is moved by the roller, and the frictional resistance generated between the roller and the plate material is reduced. The thing which can utilize and adjust the moving amount | distance of a board | plate material uniformly is provided (for example, patent document 1).

  FIG. 6 is a schematic diagram of a conventional feeding device described in Patent Document 1. The feed device 100 shown in FIG. 6 includes an air cylinder 101, a feed plate 102, a toothed belt 103, a roll 104, and a pair of material feed rolls 105a and 105b.

  The air cylinder 101 performs a certain amount of linear reciprocating motion. The delivery plate 102 is disposed so as to face the lower surface of the workpiece 106 and is connected to the end of the air cylinder 101. Accordingly, the delivery plate 102 reciprocates in the left-right direction in FIG. 6 integrally with the air cylinder 101 as the air cylinder 101 reciprocates. A toothed belt 103 is fixed to the upper surface of the delivery plate 102.

  The roll 104 has an outer peripheral side wall formed in a gear shape and is rotatably attached around a rotation shaft (not shown) so as to mesh with the toothed belt 103. The roll 104 incorporates a one-way clutch mechanism (not shown) and can rotate only in one direction. By such a toothed belt 103 and the roll 104, the linear motion of the air cylinder 101 is converted into a rotational motion of the roll 104 via the feed plate 102 and the toothed belt 103.

  The material feed rolls 105a and 105b are arranged so that a predetermined gap is provided between the outer peripheral side walls and the respective axis centers are parallel. One material feed roll 105 a is fixed to the roll 104 so that the axis center thereof coincides with the axis center of the roll 104. Therefore, the material feed roll 105 a rotates in the same rotational direction as the roll 104 as the roll 104 rotates. Further, the gap between the outer peripheral side walls of the material feed rolls 105a and 105b may generate a predetermined friction force with the workpiece 106 when the workpiece 106 is disposed between the material rolls 105a and 105b. The dimensions are set to be possible.

When transporting the workpiece 106 using such a feeding device 100, first, the workpiece 106 is disposed so as to pass between the material feed rolls 105a and 105b. Next, for example, when the workpiece 106 is conveyed in the left direction in the figure, the air cylinder 101 is extended by a predetermined amount in the right direction in FIG. Thereby, the delivery plate 102 connected to the air cylinder 101 and the toothed belt 103 fixed to the delivery plate 102 move in the right direction in FIG. At this time, as the toothed belt 103 moves in the right direction, the roll 104 meshed with the toothed belt 103 rotates counterclockwise in FIG. 6, so that the material feed roll 105a connected to the roll 104 also Rotates counterclockwise. As described above, since a predetermined frictional resistance is generated between the outer peripheral side walls of each of the pair of material feed rolls 105a and 105b and both surfaces of the workpiece 106, the material feed rolls 105a and 105b According to the rotation, the workpiece 106 is conveyed leftward in FIG.
JP-A-11-179461

  In the conventional feeding apparatus as described above, the member to be processed is held between a pair of material feeding rolls arranged with a predetermined gap. The feeding device transports the workpiece using the frictional resistance generated between each of the material feed rolls and each of both surfaces of the workpiece. Therefore, the distance between the outer peripheral side walls of the pair of material feed rolls needs to be set to a dimension that can impart frictional resistance to the workpiece. Alternatively, each of the pair of feed rolls needs to have a structure capable of pressing the workpiece when the workpiece is held. That is, in order to convey a workpiece by such a pair of feed rolls, it is essential that at least the workpiece and the outer peripheral side walls of the pair of feed rolls contact each other.

  By the way, when precision mold processing is performed on a workpiece to manufacture a semiconductor lead frame or a connector frame, for example, a positioning pin provided on the mold and a positioning pin provided in advance on the workpiece are used. The member to be processed is positioned with respect to the mold by fitting the opening portion. In this case, in order to ensure the consistency of the positional relationship between the positioning pin and the aperture, and to easily remove the positioning pin from the aperture, it is necessary not to apply a load or resistance to the workpiece. It is.

  However, the conventional feeding apparatus as described above has a problem in that it cannot be used for precision die machining because the pair of feeding rolls always applies resistance or load to the workpiece.

  Further, the conventional feeding device as described above uses a gear and a toothed belt that mesh with each other in order to convert a reciprocating motion into a rotational motion. In general, in a meshing mechanism such as a gear, there is a problem that an accumulated error of the feed amount is likely to occur due to backlash. Furthermore, since many parts to be adjusted that contribute to the feed amount are included, there is also a problem that it is difficult to ensure reproducibility of positioning of the workpiece.

  The present invention has been made to solve all of these problems. The reproducibility and accuracy of the transport amount are excellent, and the material is continuously cast without impairing the alignment of the mold and the tape member. It aims at providing the conveying apparatus, the conveying method, and press molding apparatus which convey to the inside of a type | mold.

  In order to press-mold a tape member having a long tape shape and having a plurality of apertures formed at predetermined pitches in the longitudinal direction thereof, the first invention includes: The tape member is transported to a press device having a plurality of positioning pins that engage with any one of the opening portions and including a second mold that moves the tape member from the transport position to the press position during pressing. A transfer device that is disposed so that a tip thereof is located between the transfer position and the press position, and itself penetrates the other one of the opening portions in accordance with the movement of the second mold. In addition, the first state in which the positioning pin does not pass through the aperture and the second state in which the positioning pin does not pass through the aperture and the positioning pin passes through the aperture can be taken. When the feed pin and the feed pin are in the first state, the feed pin is moved in the longitudinal direction of the tape member. It moved to one direction, when the feed pin is in the second state, and a transfer unit that moves the feed pins and the other direction in the longitudinal direction of the tape member.

  According to such a configuration, when the feed pin takes the second state, the tape member is not subjected to a load or resistance by the feed pin, so that the transport device is in a positional relationship between the positioning pin of the mold and the tape member. It is possible to continuously convey the tape member without impairing the consistency of the tape member. Further, since the transport device transports the tape member by transporting the feed pin, the reproducibility and accuracy of the transport amount can be improved.

  In this case, the outer diameter of the feed pin is set to be smaller by a predetermined amount than the diameter of the opening, and the transfer unit moves the feed pin in one direction when the feed pin is in the first state. Furthermore, it is more preferable to move the feed pin in the other direction by a distance smaller than a predetermined amount.

  According to such a configuration, since the degree of freedom of movement of the tape member with respect to the feed pin is improved after the tape member is conveyed, the positional relationship between the positioning pin and the opening portion when the positioning pin penetrates the opening portion. Can be more reliably matched.

  Further, the tape member is a strip material having a predetermined length, and the transport device is a pair of feeds arranged with a distance equal to or less than the distance between the opening portions at both ends in the longitudinal direction of the tape member with the press device being separated. A pin and a pair of transfer parts connected to each of the feed pins and moving each of the feed pins so that the operations of each of the feed pins are synchronized may be included.

  According to such a configuration, as the tape member is transported, even if the relative position of one feed pin with respect to the tape member changes, the other feed pin can be engaged with the tape member. It becomes possible to convey one or more strip material which has continuously.

  The transfer unit includes an arm connected to the feed pin, a floating joint connected to the arm, and a pulse motor unit connected to the floating joint and reciprocating the arm in a direction parallel to the longitudinal direction of the tape member. But it ’s okay.

  According to such a configuration, since the restraint between the arm and the pulse motor unit is relaxed, the feed pin can be moved smoothly. Further, the amount of movement of the feed pin can be easily set by the pulse motor unit.

  A second invention is a press molding apparatus for press molding a tape member having a long tape shape and having a plurality of apertures formed at predetermined pitches in the longitudinal direction thereof. Each of the mold and the holding unit that holds the tape member so that the tape member can move between the transport position and the press position and biases the tape member to the first position are opened. A second mold that has a plurality of positioning pins that engage with one of the holes, and moves the tape member to a pressing position via the holding portion during pressing; A first one which is arranged so as to be located between itself and penetrates the other one of the apertures in accordance with the movement of the second mold, and the positioning pin does not penetrate the apertures A state in which the positioning pin does not pass through the opening and the positioning pin passes through the opening. When the feed pin is in the first state, the feed pin is moved in one direction in the longitudinal direction of the tape member, and the feed pin is in the second state. A transfer unit that moves the pin in the other direction of the length of the tape member.

  According to such a configuration, when the feed pin takes the second state, the tape member is not subjected to resistance or load by the feed pin, so that the press molding apparatus is positioned between the positioning pin of the mold and the tape member. It is possible to press-mold while continuously transporting the tape member without impairing the consistency of the relationship. Further, since the press molding apparatus transports the tape member by transporting the feed pin, the reproducibility and accuracy of the transport amount can be improved.

  In this case, the outer diameter of the feed pin is set to be smaller by a predetermined amount than the diameter of the opening, and the transfer unit moves the feed pin in one direction when the feed pin is in the first state. Furthermore, it is more preferable to move the feed pin in the other direction by a distance smaller than a predetermined amount.

  According to such a configuration, since the degree of freedom of movement of the tape member with respect to the feed pin is improved after the tape member is conveyed, the positional relationship between the positioning pin and the opening portion when the positioning pin penetrates the opening portion. Can be more reliably matched.

  The opening portion is formed so as to be aligned along each of the pair of edges of the tape member, and the holding portion has a groove shape in cross section, each of which is within a predetermined range from the edge of the tape member. A pair of lifters may be included in which the space between the facing portions is set to be larger than the dimension in the width direction of the tape member, and a notch is formed in each of the portions facing the positioning pins and the feed pins.

  According to such a configuration, since the tape member is guided by the pair of lifters, the tape member can be smoothly conveyed in the longitudinal direction by applying a small external force to the tape member via the feed pin. Become.

  Further, the tape member is a strip material having a predetermined length, and the press molding apparatus is a pair of press members arranged with a distance equal to or smaller than the interval between the opening portions at both ends in the longitudinal direction of the tape member. A feed pin and a pair of transfer units connected to each of the feed pins and moving each of the feed pins so that operations of the feed pins are synchronized may be included.

  According to such a configuration, as the tape member is transported, even if the relative position of one feed pin with respect to the tape member changes, the other feed pin can be engaged with the tape member. It becomes possible to continuously convey one or more strip materials.

  The transfer unit includes an arm connected to the feed pin, a floating joint connected to the arm, and a pulse motor unit connected to the floating joint and reciprocating the arm in a direction parallel to the longitudinal direction of the tape member. But it ’s okay.

  According to such a configuration, since the restraint between the arm and the pulse motor unit is relaxed, the feed pin can be moved smoothly. Further, the amount of movement of the feed pin can be easily set by the pulse motor unit.

  According to a third aspect of the present invention, in order to press-mold a tape member having a long tape shape and having a plurality of apertures formed at predetermined pitches in the longitudinal direction, any one of the apertures is formed. A first die and a positioning pin that engages with any one of the opening portions by using a feed pin that penetrates, and a tape member is moved from the transport position to the press position during pressing. A first method of arranging a tape member at a conveying position so that the feed pin penetrates the opening portion, and a second die. In the process of moving the mold, when only the feed pin penetrates the tape member, the tape pin is moved by a predetermined amount in one direction in the longitudinal direction of the tape member to move the tape member to the first mold and the second mold. The second process of transferring between the mold and the second mold moves In the process, when the feed pin is not penetrating the tape member, the third step of moving the feed pin by a predetermined amount in the other direction in the longitudinal direction of the tape member, and the respective steps from the first step to the third step And a fourth step of continuously transporting the tape member by repeating a predetermined number of times in order.

  According to such a configuration, the tape member can be conveyed by linearly moving the feed pin in accordance with the engagement timing of the feed pin and the tape member according to the movement of the second mold, This is an efficient conveyance method using a continuous press molding operation by a press device.

  According to the transport device according to the first aspect of the present invention, it is possible to transport the tape member continuously without impairing the consistency of the positional relationship between the positioning pin of the mold and the opening of the tape member.

  According to the press molding apparatus according to the second invention, the tape member is pressed while continuously transporting the tape member without impairing the consistency of the positional relationship between the positioning pin of the mold and the opening of the tape member. It becomes possible to mold.

  According to the transport method according to the third invention, the tape member can be transported efficiently using the continuous press molding operation by the press device.

  Embodiments according to the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a front view showing a press molding apparatus according to the first embodiment of the present invention, FIG. 2 is a side view of the press molding apparatus according to the first embodiment of the present invention, and FIG. FIG. 2 is a plan view of the strip material shown in FIG. 1. FIG. 2B is an enlarged view of the main part of the “A” portion shown in FIG.

  The press molding apparatus 20 shown in FIG. 1 includes a first mold 4 fixed to the bolster 2, a holding unit 19, a second mold 3, a pair of feed pins 13a and 13b, and a pair of transfer units. Parts 8a and 8b.

  The holding unit 19 includes lifters 6 a and 6 b and a plurality of lifter guides 7. The lifters 6a and 6b are each made of a member having a cross-sectional shape in a cross section, and are arranged so that the center of each axis extends in parallel to the horizontal direction. The lifters 6a and 6b are arranged so that the open portions in the cross section face each other, and hold the portions within a predetermined range from the end edges 23a and 23b of the strip material 17b to be processed. The interval between the portions where the lifters 6a and 6b face each other (W shown in FIG. 2B) is set to be slightly larger than the width of the strip material 17b. As an example, in the present embodiment, the interval W is set to be about 0.05 mm larger than the width of the strip material 17b. Thereby, the held short strip material 17b is guided by the inner surfaces of the lifters 6a and 6b by applying a small external force, and can smoothly move in the longitudinal direction.

  Further, the lifters 6a and 6b are formed with notches 16a and 16b at positions facing the feed pins 13a and 13b, respectively. Thereby, when the lifters 6a and 6b are disposed at the positions shown in FIGS. 1 and 2B, the feed pins 13a and 13b can move inside the notches 16a and 16b. Further, the lifters 6 a and 6 b are formed with notches 21 a and 21 b at positions facing the positioning pins 10. These notches 21a and 21b are formed to allow each of the positioning pins 10 to engage with the opening 22 disposed inside the lifters 6a and 6b when the second mold 3 is processed. It is what.

  The lifter guide 7 is connected to the lower surfaces of the lifters 6a and 6b, and supports the lifters 6a and 6b so that the lifters 6a and 6b can move in the vertical direction. A spring (not shown) for urging the lifter guide 7 vertically upward is attached to the lower part of the lifter guide 7.

  Since the holding unit 19 is configured as described above, the strip material 17b can be held so that the strip material 17b can move between the transport position and the press position. When no external force is applied to the holding unit 19, the holding unit 19 applies the held strip material 17b from the press position to the transport position via a spring (not shown) and the lifter guide 7. To force.

  The second mold 3 is disposed so as to face the first mold 4 across the holding portion 19 and is attached to the slide 1. The second mold 3 has a stripper 5. On the lower surface of the stripper 5, a plurality of positioning pins 10 each projecting toward the first mold 4 are formed. The outer diameter of each positioning pin 10 is set to be slightly smaller than the diameter of the opening 22 formed in the strip material 17b shown in FIG. Further, each of the positioning pins 10 is arranged so as to coincide with the arrangement of the opening portions 22 of the strip material shown in FIG. Accordingly, when the strip material 17b is pressed, each of the positioning pins 10 engages with any one of the opening portions 22 formed in the strip material 17b.

  Further, the second mold 3 moves in the vertical direction when the strip material 17 is press-molded, and is joined to the first mold 4. In this process, the second mold 3 lowers the lifters 6a and 6b against a biasing force by a spring (not shown) via the stripper 5 that contacts the lifters 6a and 6b.

  The feed pins 13a and 13b are arranged so that their respective tips are located between the transport position of the strip material 17b and the press position. The outer diameter of each of the feed pins 13a and 13b is set to be smaller by a predetermined amount than the diameter of the opening 22 of the strip material 17b. The feed pins 13 a and 13 b are arranged with a distance equal to or less than the distance between the opening portions 22 formed on both ends in the longitudinal direction of the strip material 17 with the holding portion 19 therebetween.

  The transfer unit 8 is connected to the arm 12a connected to the feed pin 13a, the floating joint 15a connected to the arm 12a, and the floating joint 15a, and the arm 12a is parallel to the longitudinal direction of the tape member (in FIG. 1). And a pulse motor unit 14a that reciprocates in the left-right direction). The arm 12a is attached to the rectilinear guide 18a via the arm attachment plate 11a, and can move smoothly in the left-right direction in FIG. 1 according to the operation of the pulse motor unit 14a. Further, the floating joint 15 is provided in order to relax the restraint between the arm 12a and the pulse motor unit 14a and to allow the feed pin 13a to move smoothly. Further, the pulse motor unit 14a includes a control device (not shown) for controlling the pulse signal.

  The transfer unit 9 is configured in the same manner as the transfer unit 8. That is, the transfer unit 9 includes an arm 12a, a floating joint 15b, and a pulse motor unit 14b. The arm 12a is attached to the rectilinear guide 18b via the arm attachment plate 11b.

  The pair of transfer portions 8 and 9 move the feed pins 13a and 13b in the same direction so that the operations of the feed pins 13a and 13b are synchronized.

  Here, the positional relationship between the feed pin 13a and the positioning pin 10 and the strip material 17b will be described in detail.

  FIG. 4 is a schematic diagram showing the state of the feed pin that changes in accordance with the movement of the second mold. 4 (a) shows the first state of the feed pin, FIG. 4 (b) shows the intermediate state of the feed pin, and FIG. 4 (c) shows the second state of the feed pin. . Further, since the pair of feed pins 13a and 13b shown in FIG. 1 have the same shape and perform the same operation, only one feed pin 13a will be described here. Further, in FIGS. 4A to 4C, the description of the stripper and the holding portion is omitted.

  As described above, the strip material 17b is held at a transfer position separated from the processing surface of the first mold 4 by a holding portion (not shown) including a lifter. When the strip material 17b is pressed, the strip material 17b moves up and down between the transport position and the press position indicated by the broken line in accordance with the up and down movement of the second mold 3.

  First, referring to FIG. 4A, when the second mold 3 moves between a position indicated by a solid line and a position indicated by a dotted line, the feed pin 13a itself is a strip material 17b. And the positioning pin 10 is in a first state in which it does not pass through the opening of the strip material 17b.

  When the feed pin 13a is in the first state, a transfer unit (not shown) moves the feed pin 13a to the left in FIG. 4A by a predetermined distance d via the arm 12a. At this time, the strip material 17b is transported by a predetermined distance d in the left direction in FIG. 4A together with the feed pin 13a.

  Next, referring to FIG. 4B, when the second mold 3 is further lowered from the position indicated by the solid line, each of the positioning pins 10 corresponds to the strip material 17b as indicated by the broken line. It penetrates each of the opening portions formed at the position. Further, when the second mold 3 is lowered, the second mold 3 and the strip material 17b move together as indicated by a two-dot chain line.

  Thus, when the 2nd metal mold | die 3 moves between the position shown with the continuous line of FIG.4 (b), and the position shown with a dashed-two dotted line, the feed pin 13a itself is strip material 17b. The positioning pin 10 also takes an intermediate state of passing through the opening of the strip material 17b. When the feed pin 13a is in the intermediate state, the transfer unit (not shown) does not move the feed pin 13a in either the left or right direction in FIG.

  4C, when the second mold 3 moves between the position indicated by the solid line and the position indicated by the two-dot chain line, the feed pin 13a itself is a strip. The second state is such that the hole portion of the material 17b is not penetrated and the positioning pin 10 penetrates the hole portion of the strip material 17b.

  When the feed pin 13a is in the second state, a transfer unit (not shown) moves the feed pin 13a to the right in FIG. 4C by a predetermined distance d via the arm 12b. At this time, since the feed pin 13a is not engaged with the strip material 17b, the strip material 17b does not move. When the feed pin 13a is in the second state, only the positioning pin 10 of the second mold 3 passes through the opening of the strip material 17b. Movement is not constrained. Therefore, it is possible to ensure the consistency of the positional relationship between the positioning pin 10 and the opening portion. Further, the positioning pin 10 can be easily detached from the opening portion of the strip material 17b in the process in which the second mold 3 is raised from the position of the two-dot chain line to the position of the solid line.

  In FIG. 4 (a), for ease of explanation, the feed pin 13a is simply moved by a predetermined distance d in one direction. However, the feed pin 13a may be moved as follows. preferable. Here, the outer diameter of the feed pin 13a is set smaller than the diameter of the opening portion of the strip material 17b by a predetermined dimension. First, a transfer unit (not shown) moves the feed pin 13a by a distance D in the left direction in FIG. Next, the transfer unit returns only the feed pin 13a to the right in FIG. 4A by a distance α smaller than the difference between the outer diameter of the feed pin 13a and the diameter of the strip material 17b. As a result, the feed pin 13a is conveyed by a predetermined distance D−α (= d) in the left direction in FIG. Immediately after the feed pin 13a conveys the strip material 17b, the feed pin 13a is in contact with the peripheral portion of the opening of the strip material 17b. If the movement of the feed pin 13a is controlled in this way, the feed pin 13a 13a will be in the state which penetrates an opening part, without contact | abutting with the peripheral part of an opening part. Therefore, as shown in FIG. 4B, when the positioning pin 10 penetrates the opening portion, the degree of freedom in moving the strip material in the horizontal direction is improved. It becomes possible to match the positional relationship with the part more reliably.

  FIG. 5 is a diagram showing the operation of the press molding apparatus shown in FIG. Hereinafter, the operation of the press molding apparatus will be described in detail with reference to FIGS. 5 (a) to 5 (d).

  FIG. 5A is a diagram showing a state when the second mold 3 is located at the top dead center. Since the lifter 6b is biased upward by a spring (not shown), the strip material 17c is disposed at the transport position. At this time, the feed pin 13a is in the first state. That is, only the feed pin 13a penetrates the opening of the strip material 17c, and the positioning pin 10 does not penetrate the strip material 17c.

  When the second mold 3 is lowered, each of the positioning pins 10 passes through each of the opening portions formed at corresponding positions in the strip material 17c. Further, when the second mold 3 is lowered, the second mold 3 lowers the lifter 6b by the stripper 5 in contact with the upper surface of the lifter 6b, and moves the strip material 17c to the press position.

  FIG. 5B is a view showing a state where the second mold 3 is lowered to the bottom dead center. The second mold 3 press-molds the strip material 17 c between the first mold 4 and the second mold 3. At this time, the feed pin 13a is in the second state. That is, the feed pin 13a does not pass through the opening of the strip material 17c, and only the positioning pin 10 passes through the opening of the strip material 17c. A transfer unit (not shown) moves the feed pin 13a by a predetermined amount to the right in FIG. 5B via the arm 12a. As a result, the feed pin 13a returns to the start position and stands by. In this process, the feed pin 13a positions the strip material 17c with respect to the second mold 3 without applying any load or resistance to the strip material 17c. Therefore, it is possible to mold the strip material 17c without generating deformation or scratches in the apertures formed in the strip material 17c.

  After the press molding is completed, when the second mold 3 is lifted, the lifter 6b is lifted according to the urging force by a spring (not shown) and moves the strip material 17c to the transport position again.

  FIG.5 (c) is the figure which showed the state which the 2nd metal mold | die 3 rose to the top dead center after press molding completion. At this time, the feed pin 13a arranged at the start position is in the first state. That is, since only the feed pin 13a penetrates the opening of the strip material 17c and the positioning pin 10 does not penetrate the strip material 17c, the positioning pin 10 does not prevent the operation of the feed pin 13a. A transfer unit (not shown) moves the feed pin 13a by a predetermined amount to the left in FIG. 5C via the arm 12a. With the movement of the feed pin 13a, the strip material 17c is conveyed by a predetermined amount in the left direction as shown in FIG.

  In addition, arrangement | positioning of each part of the press molding apparatus in FIG.5 (d) is the same as arrangement | positioning of each part in Fig.5 (a).

  Thus, according to the press molding apparatus which concerns on this embodiment, the process (FIG.5 (c)) which arrange | positions the strip material 17c in a conveyance position so that the feed pin 13a may penetrate an opening part, and 2nd When only the feed pin 13a passes through the strip material 17c in the process of moving the mold 3, the strip material 17c is moved to the first mold 4 and the first mold 4 by moving the feed pin 13a by a predetermined amount in one direction. In the process of transferring between the second mold 3 (FIGS. 5D and 5A) and the process of moving the second mold 3, the feed pin 13a does not penetrate the strip material 17c. At a certain time, the step of moving the strip material 17c by a predetermined amount in the other direction by the feed pin 13a (FIG. 5 (b)) is repeated in sequence a predetermined number of times, thereby pressing the strip material 17c while continuously transporting the strip material 17c. be able to. Moreover, according to such a conveyance method of the strip material 17c, the strip material 17c can be efficiently conveyed using the continuous press molding operation | movement by a press apparatus.

  In the description of FIG. 5, only the operation of the transfer unit 8 disposed on the entrance side to the mold has been described, but the transfer unit 9 disposed on the exit side from the mold is also synchronized with the transfer unit 8. Works the same way. As the transport unit 8 transports the strip material, the relative position of the feed pin 13a with respect to the strip material moves to the rear side of the strip material. However, when the strip material is conveyed to some extent, the strip material engages with the feed pin 13b that operates in synchronization with the feed pin 13a. Thereby, like the strip material 17b shown in FIG. 1, it is handed over to the transfer part 9 arrange | positioned at an exit side, and it becomes possible to convey continuously the 1 or more strip material which has predetermined | prescribed finite length. Become.

  As described above, according to the press molding apparatus 20 according to the present embodiment, the positioning pin 10 and the strip material are attached to the second mold 3 at the time of precision mold processing for manufacturing, for example, a semiconductor lead frame or a connector frame. It becomes possible to press-mold the strip material 17 continuously without impairing the alignment with the positioning holes provided in 17c. The feed pins 13a and 13b used for transporting the strip material 17c are directly attached to the transfer units 8 and 9. As a result, the feeding error of the strip material 17c is reduced, and even when the type of the strip material is switched, the reproducibility of positioning with respect to the second mold 3 is excellent, and the time required for switching the type can be shortened. it can.

  Furthermore, according to the press molding apparatus 20 according to the present embodiment, the feed pins 13a and 13b can use the vertical movement of the strip material 17c according to the movement of the second mold 3 to actively use the strip material. It can be fitted into or removed from the opening 17c. Therefore, since the strip material 17c can be transported only by moving the feed pins 13a and 13b back and forth in the longitudinal direction of the strip material 17c, the strip material 17c can be transported at a speed corresponding to the speed of press molding. . Therefore, it is possible to reduce the manufacturing cost of the press-molded product by increasing the speed of the press work.

  In the above embodiment, the press molding apparatus conveys strip material having a predetermined length, but has a long tape shape as long as a plurality of apertures are formed at a constant pitch in the longitudinal direction. The tape member can be similarly conveyed.

  Further, in the above-described embodiment, the press forming apparatus including the feed pin, the transfer unit, and the press device is configured. However, the transport device including the feed pin and the transfer unit is configured as a single unit separately from the press device. You may do it.

  Furthermore, in the above embodiment, the transfer unit includes an arm, a floating joint, and a pulse motor unit. However, if the transfer unit can move the feed pin parallel to the longitudinal direction of the tape member, A configuration provided with other members, a driving device, or the like may also be used.

  The transport device according to the present invention has the characteristics that the consistency of the positional relationship between the positioning pin of the mold and the opening formed in the tape member is not impaired, and the reproducibility of the transport amount and the feed accuracy are excellent. Therefore, for example, it is useful as a transport device and a press molding device for manufacturing a semiconductor lead frame, a connector frame, and the like by precision press molding.

The front view which shows the press molding apparatus which concerns on the 1st Embodiment of this invention. The side view which shows the press molding apparatus which concerns on the 1st Embodiment of this invention. Plan view of strip material shown in FIG. The schematic diagram which shows the state of the feed pin which changes according to a movement of a 2nd metal mold | die. The figure which shows operation | movement of the press molding apparatus shown by FIG. Schematic diagram of a conventional feeder

Explanation of symbols

3 Second mold 4 First mold 6 Lifters 8 and 9 Transfer section 10 Positioning pin 12 Arm 13 Feed pin 14 Pulse motor unit 15 Floating joint 16, 21 Notch 17 Strip material 19 Holding section 22 Opening section 23 End edge

Claims (10)

In order to press-mold a tape member having a long tape shape and having a plurality of apertures formed at predetermined pitches in the longitudinal direction, the first mold and each of the apertures A conveying device that conveys the tape member to a press device having a plurality of positioning pins that engage with the second die and that moves the tape member from the conveying position to the pressing position during pressing. Because
The tip is disposed so as to be positioned between the transport position and the press position, and in response to the movement of the second mold, itself penetrates the other one of the hole portions, and A first state in which the positioning pin does not penetrate the aperture, and a second state in which the positioning pin does not penetrate the aperture and the positioning pin penetrates the aperture. Possible feed pins,
When the feed pin is in the first state, the feed pin is moved in one direction in the longitudinal direction of the tape member, and when the feed pin is in the second state, the feed pin is moved A transport device including a transfer unit that moves the tape member in the other direction of the longitudinal direction. The outer diameter of the feed pin is set smaller than the diameter of the opening by a predetermined amount,
The transfer unit moves the feed pin in the one direction when the feed pin is in the first state, and further moves the feed pin in the other direction by a distance smaller than the predetermined amount. The transfer apparatus according to claim 1, wherein the transfer apparatus is moved. The tape member is a strip material of a predetermined length,
The transfer device
A pair of the feed pins arranged with a distance equal to or less than the distance between the opening portions at both ends in the longitudinal direction of the tape member across the pressing device,
A pair of said transfer parts which are connected to each of the said feed pins and move each of the said feed pins so that operation | movement of each of the said feed pins is synchronized, The said transfer part is characterized by the above-mentioned. 2. The transfer device according to any one of 2 above. The transfer unit is
An arm connected to the feed pin;
A floating joint connected to the arm;
The conveying apparatus according to claim 1, further comprising a pulse motor unit connected to the floating joint and reciprocating the arm in a direction parallel to a longitudinal direction of the tape member. . A press molding apparatus for press molding a tape member having a long tape shape and having a plurality of apertures formed at predetermined pitches in the longitudinal direction,
A first mold;
A holding unit that holds the tape member so that the tape member can move between a transport position and a press position, and biases the tape member to the first position;
A plurality of positioning pins each engaging with one of the opening portions, and a second mold for moving the tape member to the pressing position via the holding portion during pressing;
The tip is disposed so as to be positioned between the transport position and the press position, and in response to the movement of the second mold, itself penetrates the other one of the hole portions, and A first state in which the positioning pin does not penetrate the aperture, and a second state in which the positioning pin does not penetrate the aperture and the positioning pin penetrates the aperture. Possible feed pins,
When the feed pin is in the first state, the feed pin is moved in one direction in the longitudinal direction of the tape member, and when the feed pin is in the second state, the feed pin is moved A press molding apparatus comprising: a transfer unit that moves the tape member in the other direction of the longitudinal direction thereof. The outer diameter of the feed pin is set smaller than the diameter of the opening by a predetermined amount,
The transfer unit moves the feed pin in the one direction when the feed pin is in the first state, and further moves the feed pin in the other direction by a distance smaller than the predetermined amount. The press molding apparatus according to claim 5, wherein the press molding apparatus is moved. The opening is formed to align along each of a pair of edges of the tape member;
Each of the holding portions has a groove shape in cross section, and each of the holding portions surrounds a portion in a predetermined range from the end edge of the tape member, and an interval between the facing portions is set to be larger than a dimension in the width direction of the tape member. The press molding apparatus according to claim 5 or 6, further comprising a pair of lifters in which notches are formed in each of the portions facing the positioning pins and the feed pins. The tape member is a strip material of a predetermined length,
The press molding apparatus includes:
A pair of the feed pins arranged with a distance equal to or less than the distance between the opening portions at both ends in the longitudinal direction of the tape member across the holding portion,
A pair of the transfer units connected to each of the feed pins and moving each of the feed pins so that operations of the feed pins are synchronized with each other. The press working apparatus according to any one of 7. The transfer unit is
An arm connected to the feed pin;
A floating joint connected to the arm;
The press working according to any one of claims 5 to 8, further comprising a pulse motor unit connected to the floating joint and reciprocating the arm in a direction parallel to a longitudinal direction of the tape member. apparatus. In order to press-mold a tape member having a long tape shape and having a plurality of apertures formed at predetermined pitches in the longitudinal direction, a feed pin penetrating any one of the apertures is provided. And a second mold that has a first mold and a positioning pin that engages with any one of the opening portions, and moves the tape member from the transport position to the press position during pressing. A conveying method for conveying to a press device including a mold,
A first step of disposing the tape member at the transport position so that the feed pin penetrates the aperture;
In the process of moving the second mold, when only the feed pin passes through the tape member, the tape pin is moved by a predetermined amount in one direction in the longitudinal direction of the tape member. A second step of transferring between the first mold and the second mold;
In the process of moving the second mold, when the feed pin is not penetrating the tape member, a third step of moving the feed pin in the other direction in the longitudinal direction of the tape member;
A transport method comprising: a fourth process of continuously transporting the tape member by sequentially repeating each process from the first process to the third process a predetermined number of times.

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