JPH08191198A - Transfer pallet for printed board - Google Patents

Abstract

PURPOSE: To provide a transfer pallet which can convey printed boards having various kinds of sizes, with a single pallet. CONSTITUTION: A pallet 1 consists of a pallet main body 2 constituted of a square frame 2. A space for arranging a printed board 4 is formed in the central part of the pallet main body 2. The printed board 4 positioned in the space is pressed in the pallet plane direction and retained by pressure pawls 21a, 21b, 21c, 21d of a pressure block 5. A reference side 29 for retaining one end portion 4a of the printed board 4 is formed in the pallet main body 2. A retaining contact part whose section is recessed is formed on the reference side 29. The end portion 4a of the printed board 4 set in the reference side 29 is surely retained by the retaining contact part, so that printed boards having various kinds of sizes are positioned and clamped by the pressure block 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer pallet for printed circuit boards.

[0002]

2. Description of the Related Art Conventionally, in the process of assembling the same electronic components on printed circuit boards of different sizes and the process of inspecting the printed circuit boards after the electronic components are assembled, the flow width of the conveyor is adjusted according to the size of the printed circuit board. It is necessary to prepare different pallets because the dedicated pallet is used for the work process for the upper surface of the printed circuit board and the work process for the lower surface of the printed circuit board.

Therefore, in the printed circuit board carrier disclosed in Japanese Patent Laid-Open No. 4-338698, printed circuit boards having different shapes can be set by changing the position of the movable bar according to the shape of the printed circuit board. This makes it possible to generalize the carrier.

[0004]

However, according to the carrier for printed circuit boards disclosed in JP-A-4-338698, there are the following problems listed in (1) to (3). It is necessary to provide a reference hole in the printed circuit board for positioning the printed circuit board, and positioning fixing pins and moving pins are inserted into the reference hole by a ball plunger. Therefore, the work of inserting the positioning fixing pin and the moving pin is indispensable, and the work efficiency is lowered. Further, it is necessary to provide a range around the reference hole in which electronic parts and the like in which the ball plunger can be mounted are not mounted, which imposes new restrictions on the design of the printed circuit board.

To position the printed circuit board, the movable bar is set and the printed circuit board is fixed, and then the positioning fixing pin and the moving pin are inserted, so that the printed circuit board is deformed during the insertion work and stress is generated. As a result, there is a risk that the printed wiring will be broken, stress will be applied to the soldered portion, electronic components after mounting, etc., and cracks will occur in these.

Since the positioning of the printed circuit board is performed by moving the movable bar, it is necessary to make a setup for moving the movable bar for each product number having a different shape of the printed circuit board, resulting in a decrease in work efficiency. Two springs are located between the fixed first bar and the movable bar, and the spring urges the movable bar toward the first bar. Therefore, it is conceivable that the printed circuit board sandwiched between the first bar and the movable bar may be pressed more than necessary, and in that case, the printed circuit board may warp and cause stress distortion.

Due to the problems (1) to (3) listed above, according to the printed circuit board carrier disclosed in Japanese Patent Application Laid-Open No. 4-338698, the yield of products is reduced and the work efficiency is reduced due to the damage of the printed circuit board after the electronic parts are assembled. The decrease causes a new problem that the product cost increases. It is a first object of the present invention to provide a printed circuit board carrying pallet capable of carrying printed circuit boards of various sizes with a single pallet.

A second object of the present invention is to provide a printed circuit board carrying pallet capable of two-dimensionally positioning the printed circuit board with respect to the pallet. Further, a third object of the present invention is to provide a printed circuit board carrying pallet having a gripping function that enables the upper and lower surfaces of the printed circuit board to be reversed. Still further, a fourth object of the present invention is to provide a printed-circuit board carrying pallet capable of easily assembling electronic components to a printed-circuit board.

A fifth object of the present invention is to provide a printed circuit board carrying pallet which can easily inspect a printed circuit board after assembling electronic components.

[0010]

According to a first aspect of the present invention, there is provided a printed board transfer pallet according to the present invention. A movable block for gripping and pressing the printed circuit board in the plane direction of the pallet body, and a regulation member for restricting the displacement of one end and the other end of the printed circuit board in the pallet plane direction. It is characterized by

According to a second aspect of the present invention, there is provided a printed circuit board transfer pallet according to the first aspect, wherein the block has a pressing claw for pressing one end of the printed circuit board. It is characterized by having. Furthermore, the printed circuit board transfer pallet according to claim 3 of the present invention is the printed circuit board transfer pallet according to claim 1 or 2, wherein the block has a positioning mechanism that can position the pallet body at a plurality of positions. It is characterized by having.

Still further, according to a fourth aspect of the present invention, there is provided a printed circuit board transport pallet according to the second or third aspect, wherein the recess for restricting the displacement in the pallet plane direction is the pallet. It is characterized in that it is formed on the main body and the pressing claw. According to a fifth aspect of the present invention, there is provided a printed circuit board transfer pallet according to the second aspect, wherein the pressing claw can be locked in a groove formed in the printed circuit board. It is characterized by having a different projection.

According to a sixth aspect of the present invention, there is provided a printed circuit board transport pallet according to the fourth aspect, wherein the surface of the recess is electrically insulated. Furthermore, the printed circuit board transfer pallet according to claim 7 according to the present invention is the printed circuit board transfer pallet according to any one of claims 2 to 6, wherein the pressing claw presses against the printed circuit board. When released, place the printed circuit board,
Further, the printed circuit board is movable in the plane direction of the pallet body.

[0014]

According to the printed circuit board carrying pallet of claim 1 of the present invention, a movable block for holding and pressing the printed circuit board in the plane direction of the pallet body, and one end portion of the printed circuit board. And the regulation member that regulates the displacement of the other end in the pallet plane direction, it is possible to grip printed boards having various sizes in the pallet plane direction. This allows printed circuit boards of various sizes to be carried on a single pallet,
This has the effect of eliminating the need for different pallets according to the size of the printed circuit board.

According to the printed circuit board carrying pallet of the second aspect of the present invention, the movable block for gripping and pressing the printed circuit board has the pressing claw for pressing one end of the printed circuit board. This pressing claw has the effect of securely gripping one end of the printed circuit board and absorbing a slight dimensional error of the printed circuit board. Further, the printed board can be easily removed from the pallet by moving the pressing claw in the direction opposite to the pressing direction of the pressing claw.

Further, according to the printed circuit board carrying pallet of claim 3 of the present invention, the movable block for holding and pressing the printed circuit board has a positioning mechanism capable of positioning the pallet body at a plurality of positions. ,
Even if the size of the printed circuit board is changed in the direction in which the block can be positioned, the change in size can be easily absorbed.

Further, according to the printed circuit board carrying pallet of the fourth aspect of the present invention, since the concave portion for restricting the positional deviation in the pallet plane direction is formed in the pallet body and the pressing claw, one set of opposite sides is formed. There is an effect that the upper surface and the lower surface of the printed circuit board can be reversed together with the pallet body simply by using the minute area. Further, according to the printed circuit board carrying pallet of the fifth aspect of the present invention, since the pressing claw has the protrusion that can be locked in the groove formed in the printed circuit board, the protrusion is locked in the groove. This has the effect of facilitating two-dimensional positioning. As a result, the two-dimensional positioning of the printed circuit board is reliably performed,
This has the effect of facilitating the assembly of electronic components on the printed circuit board.

Further, according to the printed circuit board carrying pallet of claim 6 of the present invention, since the surfaces of the recesses formed in the pallet body and the pressing claws are electrically insulated, the printed circuit board is supported on the printed circuit board, for example. The printed conduction pattern or the mounted electronic components will not be electrically short-circuited with the pallet body and the pressing claws. Therefore, an electrical test can be performed with the printed circuit board set in the pallet body. That is, there is an effect that the inspection of the printed circuit board after assembling the electronic components can be easily performed.

Further, according to the printed circuit board carrying pallet of claim 7 of the present invention, when the pressing claws release the pressure on the printed circuit board, the printed circuit board is placed and the printed circuit board is palletized. Since it is movable in the plane direction of the main body, even if an external force is applied to the printed board, the printed board can be aligned in the plane direction without deforming the printed board. As a result, stress is not applied to the printed wiring printed on the printed circuit board, the mounted electronic components, etc., and there is an effect of preventing damage to the printed circuit board.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 13 show an embodiment in which the printed board transport pallet of the present invention is used in an automated line for assembling and inspecting various electronic components on a printed board. (First Embodiment) FIGS. 1 to 7 show an overall view of a printed-circuit board transport pallet and a configuration diagram of each component.

Here, the automation line includes automatic insertion shown in FIG. 13, assembling of odd-shaped components, SMD mounting, connector, soldering of power transistors, etc., function check, cover assembly, temperature inspection, bracket assembly, etc. It consists of steps. Among these steps, the printed board transfer pallet is used from the step subsequent to the automatic insertion step which is the preceding step to the cover assembling step before the temperature inspection step which is the subsequent step.

First, the printed board carrying pallet according to the first embodiment will be described in detail with reference to FIGS. 1 is a plan view of the pallet 1, FIG. 2 is a view in the direction of arrow II shown in FIG.
FIG. 3 is a perspective view. The pallet 1 is composed of a pallet body 2 made of a quadrangular frame, and has a space portion in the center of the pallet body 2 for arranging the printed circuit board 4. In this space, the printed circuit board 4 has the pressing claws 21 of the pressing block 5.
It is pressed and supported in the pallet plate surface direction by a, 21b, 21c and 21d.

The pallet body 2 has support holes 11 and 12 which allow the upper and lower surfaces of the pallet body 2 to be turned upside down, which is located in the lateral center of the body in FIG. 2 and in the vertical direction in FIG. It is formed in the middle part. The supporting holes 11, 1
2 is formed in the middle portion in the plate thickness direction when the reversal occurs, the vertical position of the printed circuit board before the reversal and the vertical position of the printed circuit board after the reversal are uniformly unified, and the assembling and inspection process is performed. This is to make the process efficient.

Further, pin holes 13, 14, 15, 16, 17 for deciding the position of the pressing block 5 are formed in a direction communicating with the inside and outside of the space. These pin holes 13, 14, 1
A movable pin 36 on the pressing block side, which will be described later, can be inserted into each of 5, 16 and 17, and the pressing claws of various sizes can be pressed and grasped by aligning the positions of the pressing claws at that position.

Various components are sequentially mounted on the printed circuit board 4 in each assembling process.
Alternatively, position high-accuracy correction holes 42 and 43 for highly accurately positioning the position of the printed circuit board 4 on the fixed portion on the line side at the time of inspection after assembly of components are formed so as to penetrate in the plate thickness direction. The hole diameters of the position and accuracy correction holes 42 and 43 are, for example, about 3.5 mm, and will be described later by inserting a positioning pin of an inspection jig (not shown) into the position and accuracy correction holes 42 and 43. The printed circuit board 4 held in the floating state is positioned.

In the pallet body 2, a reference side 29 for supporting one end 4a of the printed board 4 is formed on the space side, and the reference side 29 has a concave cross section as shown in FIG. The contact portion 7 is formed. This support contact part 7
Thus, the end 4a of the printed circuit board 4 set on the reference side 29 is reliably supported. The surface of the support contact portion 7 is coated with wear-resistant insulating coating. For this reason,
The conductive pattern printed on the supported printed circuit board 4 or the electronic components mounted thereon does not electrically short-circuit with the supporting contact portion 7.

The reference side 29 is provided with a plurality of cam followers 8 along the side direction of the end 4a of the printed circuit board 4. This cam follower 8 is a pallet body 2
Is rotatably attached to the pallet body 2,
When the printed circuit board 4 is set on the reference side 29, the contact resistance generated by the contact between the end 4a of the printed circuit board 4 and the reference side 29 is reduced.

The reference side 29 is shown in FIG. 4 for easy understanding, and the position of the reference side 29 is the printed circuit board 4.
The insertion distance to the support contact portion 7 is set to be, for example, 2 mm. As shown in FIG. 1, the pressing block 5
Is a pressing claw 21 at the other end 4b side of the printed circuit board 4.
The a, 21b, 21c, and 21d are pushed leftward in FIG. 1 to grip the printed circuit board 4 with the supporting contact portion 7. In this case, the push claws are denoted by reference numerals 21a, 21b, 21c, 2
There are 4 pieces shown by 1d, of which the pressing claws 21d
Will be described as a representative.

As shown in FIGS. 1, 5 and 7, the pressing claw 21d is composed of an upper plate 22 and a lower plate 23. The upper plate 22 is leftward in FIG. The lower plate 23 is a fixed body fixed to the pressing block 5 and is a movable body that is biased to move in the left-right direction. A notched surface 220 shown in FIG. 5 is formed at the tip of the upper plate 22, and a notched surface 230 is formed at the tip of the lower plate 23. The groove 24 is formed by the notch surface 220 and the notch surface 230. The groove portion 24 has a role of guiding the end portion 4b of the printed circuit board 4 so that the end portion 4b can be easily inserted and supported. Further, a V-shaped convex portion 25 is formed at a position retracted from the cutout surface 220 of the upper plate 22 to the inner side. Since the tip 25a of the V-shaped convex portion 25 is sharpened, the tip 25a is locked in the V groove 19 formed at one place of the printed board 4, and the cam followers 8 described above push the pushing claws 21a, 21b. The printed circuit board 4 is moved along with only the spring force of 21c and 21d and positioned at the position shown in FIG. The V-shaped convex portion 25 and the V-shaped groove 19 prevent the printed circuit board 4 from rattling in the x direction shown in FIG.

As shown in FIG. 4, the printed circuit board 4
The V groove 19 formed at the end 4b which is the side in the x direction of
It is located at a fixed distance w from the side in the y direction of the printed circuit board 4 on the side closer to the pressing claw 21d. The size of this distance w is
Since the printed boards of different types having different sizes are unified and set to the predetermined values, the positioning in the x direction can be reliably performed regardless of the type of the printed boards.

Further, the surface of the pressing claw 21d is coated with abrasion-resistant insulating coating, like the support contact portion 7 described above. As a result, the conductive pattern printed on the supported printed circuit board 4 or the mounted electronic component is pressed by the pressing claw 21d.
There is no electrical short circuit with. The push claws 21a, 2
The above-mentioned V-shaped convex portion 25 is not formed in 1b and 21c, and the side of the end portion 4b of the printed board 4 abuts on the position retracted from the cutout surface 220 of the upper plate 22 to the back side. Possible end faces are formed. In addition, the push claws 21a, 21b, 2
The 1c is coated with a wear-resistant insulating coating similar to the pressing claw 21d.

As shown in FIG. 1, the positioning mechanism 31 of the pressing block 5 is composed of a bracket 32, a compression coil spring 33, and a movable pin 36. The bracket 32 is fixed to the side surface of the outer frame 9 of the pressing block with a bolt 34, and a movable body 35 that is vertically movable in FIG. 1 is moved downward by a compression coil spring 33 having one end fixed to the bracket 32. Is urged and installed. A movable pin 36 is provided at the lower end of the movable body 35, and the movable pin 36 can be inserted into the pin hole 17 of the pallet body 2 described above. In the state shown in FIG. 1, the movable pin 36 is inserted into the pin hole 17, and the movable body 35 is sufficiently lowered by the urging force of the compression coil spring 33. By pulling the L-shaped portion 35a attached to the movable body 35 upward in FIG. 1, the movable pin 36 can be removed, and the outer frame 9 is moved to the left in FIG. 1 with the movable pin 36 removed. It can be moved. By moving the outer frame 9 and inserting the movable pin 36 at the desired position of the desired pin hole 13, 14, 15, 16 at the desired position, the outer frame 9 is moved to the desired position according to the size of the printed circuit board. Can be locked. The inner frame 10 is fixed to the inner side of the outer frame 9, and the pin 9 of the pressing block position changing device 91 of the fifth embodiment described later is inserted into the hole of the locking cylinder 38 provided in the inner frame 10.
The pressing block 5 can be moved by hooking 4.

The pallet body 2 has a movable pin 36.
A confirmation hole 47 is provided for easily confirming which position of the pin holes 13, 14, 15, 16, 17 is inserted. Since the confirmation hole 47 is formed in the pallet body 2 so as to penetrate perpendicularly to the pallet surface of the pallet body 2, the insertion position of the movable pin 36 can be easily visually confirmed from the upper surface of the pallet body 2. I have to.

According to the present embodiment, it is possible to position and hold such various printed circuit boards by using the pressing block 5 with respect to the printed circuit boards having various sizes in the x direction or the y direction shown in FIG. it can. Further, the supporting contact portion 7 having a concave cross section is formed on the reference side 29, and the pressing block 5
Since the groove portion 24 is formed in the pallet, it is possible to invert the upper surface and the lower surface of each pallet body 2 by using only one set of minute areas on opposite sides. At the time of reversing, the position in the z direction in FIG. 3 is standardized to the intermediate position, so that the assembly or inspection after the reversing movement can be performed accurately.

Further, in addition to the pressing claw 21d, another pressing claw 21
By selecting and using multiple a, 21b, and 21c,
When the size of the printed circuit board 4 is changed, x shown in FIG.
With respect to the directional dimension, the distance between the pressing claws can be set according to an example of a change in printed circuit board size. Furthermore, when the size of the printed circuit board 4 is changed, the position of the pressing block 5 is 10 with respect to the y-direction size shown in FIG.
In the case of a difference of about mm, this difference can be compensated by moving the position of the pressing block 5 by the pin 47, and when the position of the pressing block 5 is a few mm, the pressing block 5 can be pressed. Claws 21a, 21b, 21c, 2
The difference can be compensated by only the spring force of 1d. Therefore, the printed circuit board can be gripped according to the change in the y-direction dimension of the printed circuit board 4.

Further, since the V-shaped convex portion 25 is formed only on the pressing claw 21d and the V-shaped groove 19 is formed at one place on the printed circuit board 4, the V-shaped convex portion is formed in the V-shaped groove 19 of the printed circuit board 4. By locking the portion 25, the positioning can be performed two-dimensionally. Furthermore, since the surface of the support contact portion 7 of the reference side 29 and the surfaces of the pressing claws 21a, 21b, 21c, 21d of the pressing block 5 are coated with wear-resistant insulating coating, An electrical test such as an electrical continuity test is performed with the printed circuit board 4 set on the pallet body 2 without the printed conduction pattern or the mounted electronic components being electrically short-circuited with the pressing claw 21d. be able to.

(Second Embodiment) The printed circuit board 4 mounted on the pallet 1 is conveyed to a part of the automation line shown in FIG. 13 by conveyor conveyance by rollers. The roller transport device is shown in FIG. Roller transport device 51
Are arranged such that a large number of rollers 54 supported on both ends of the frame 52 and the frame 53 form a surface in parallel at a predetermined interval. By applying a rotational driving force to these many rollers 54, the pallet 1 placed on these rollers 54 is conveyed in the arrow direction shown in FIG.

(Third Embodiment) The pallet transporting device shown in FIGS. 9 and 10 is a device for cantilevering one end of the pallet 1 and transporting it. Since a space is formed on the lower surface side and the upper surface side of the printed circuit board 4 in this pallet carrier, a free space for assembling the electronic components is secured from this space.

As shown in FIGS. 9 and 10, the base 61
Rails 62 and 63 extend in parallel to the above and parallel to the transport direction. Screws are formed on these rails 62 and 63, and the movable portion 64 is movable in the carrying direction by a ball screw mechanism that meshes with these screws. Movable part 64
Is composed of a moving body 67 and a movable arm 68, and the movable arm 68 can be reciprocated leftward in FIG. 9 by cylinders 70 and 71. The pallet 1 is gripped and fixed to the movable arm 68 by the locking portions 73 and 74. Locking parts 73, 7
The pallet 1 gripped at 4 can be conveyed in the conveying direction indicated by the arrow in FIG. 10 by rotation of the motor 65 in the conveying direction indicated by the arrow in FIG.

As a result, the movable arm 68 is attached to the engaging portion 73,
The pallet 1 gripped by 74 is transported in the transport direction shown in FIG. (Fourth Embodiment) A fourth embodiment shown in FIG. 11 shows a pressing claw releasing device 81 for releasing the pressing claws 21a, 21b, 21c and 21d pressing the printed circuit board 4 set on the pallet body 2. ing.

The pushing claw releasing device 81 shown in FIG.
2, a cylinder 83 is attached to the tip of which a lever rotation actuator 84 is provided. The lever rotation actuator 84 moves the substrate push-out pawl moving lever 85 from the position indicated by the solid line position 85 in FIG. 11 to the position indicated by the dotted line position 86. After that, the cylinder 83 moves the substrate push-out pawl moving lever 85 toward the right side in FIG. 11 together with the lever rotation actuator 84, so that the push pawls 21a, 21b, 21c, 21d.
Releases the grip of the printed circuit board 4 against the compression coil spring 28. As a result, the printed circuit board 4 set on the pallet body 2 is in a floating state in which it can be freely moved within the pallet body 2.

This floating state is effective in the steps exemplified below. For example, in the function check process, the position high-precision correction holes 4 formed in the printed circuit board 4 are formed.
Pins (not shown) are inserted into the pins 2 and 43 by the function check device. Since the outer diameter of the pin inserted at this time is smaller than the hole diameters of the position high-accuracy correction holes 42 and 43, a slight error in the pin insertion position causes the floating printed circuit board 4 to move in the x direction or y direction. It is corrected by moving in the direction. That is, the printed circuit board 4 can move freely even if there is an error in the pin insertion position, so that the printed circuit board 4 is not deformed when the pin is inserted, and stress due to the deformation is generated in the printed circuit board 4. Never.

(Fifth Embodiment) FIG. 1 shows a fifth embodiment of the present invention.
It is shown in FIG. The fifth embodiment shown in FIG. 12 is a pressing block position changing device 91 for changing the position of the pressing block 5 of the pallet body 2 shown in FIG. In this pressing block position changing device 91, a pin 94 is reciprocally movable from the position shown in FIG. 12 to the left direction of the arrow by a cylinder 93 attached to a base 92. In addition, the cylinder 96 allows pin 9
4 can move up and down in FIG. As a result, the pin 94 is inserted into the hole of the locking cylinder 38 of the pallet 1 shown in FIG. 1 and moved in the left-right direction in FIG. At this time, pin 94
At the same time, the bracket lever 98 also moves up and down. The bracket lever 98 pulls out the movable pin 36 from the pin hole by hooking the bracket 32 fixed to the pressing block 5. Then, by moving the pin 94 and the bracket lever 98 upward, the bracket 32 is released from the bracket lever 98 and the movable pin 36 is inserted and fixed.

[Brief description of drawings]

FIG. 1 is a plan view of a transfer pallet for a printed circuit board according to a first embodiment of the present invention.

FIG. 2 is a perspective view taken along line II in FIG.

FIG. 3 is a perspective view of the printed circuit board transfer pallet shown in FIG.

FIG. 4 is a schematic view showing a state where a printed board is assembled to a printed board transfer pallet according to the first embodiment.

5A and 5B are views showing push claws of the printed circuit board transfer pallet according to the first embodiment, in which FIG. 5A is a front view and FIG.
(C) is a bottom view of the upper plate of the pressing claw.

6 is a sectional view taken along line VI-VI shown in FIG.

7 is a sectional view taken along line VII-VII shown in FIG.

FIG. 8 is a plan view of a roller transport device according to a second embodiment of the present invention.

FIG. 9 is a front view of a pallet conveyor according to a third embodiment of the present invention.

FIG. 10 is a view on arrow X in FIG.

FIG. 11 is a front view of a pressing claw releasing device according to a fourth embodiment of the present invention.

FIG. 12 is a front view of a pressing block position changing device according to a fifth embodiment of the present invention.

FIG. 13 is an explanatory diagram of each step of the automation line according to the example of the present invention.

[Description of sign]

 1 Pallet 2 Pallet Main Body 4 Printed Circuit Board 5 Pressing Block (Block) 7 Support Contact Part (Concave) 19 V Groove (Groove) 21a, 21b, 21c, 21d Push Claw (Regulating Member) 24 Groove (Regulating Member, Recess) 25 V Character-shaped convex portion (projection portion) 28 Compression coil spring 29 Reference side 31 Positioning mechanism 42, 43 Position high-accuracy correction hole

Claims (7)

[Claims] 1. A plate-shaped pallet body having a space portion in a central portion, and a movable block for holding and pressing a printed circuit board in the plane direction of the pallet body in the space portion, one side of the printed circuit board. Is provided with a regulating member for regulating the positional deviation between the end of the pallet and the end on the other side in the pallet plane direction. 2. The printed board carrying pallet according to claim 1, wherein the block has a pressing claw for pressing one end of the printed board. 3. The printed board transport pallet according to claim 1, wherein the block has a positioning mechanism capable of positioning the block with respect to the pallet body at a plurality of positions. 4. The printed circuit board transport pallet according to claim 2, wherein a recess for restricting the positional displacement in the pallet plane direction is formed in the pallet body and the pressing claw. 5. The printed board transport pallet according to claim 2, wherein the pressing claw has a protrusion that can be locked in a groove formed in the printed board. 6. The printed board transfer pallet according to claim 4, wherein the surface of the recess is electrically insulated. 7. The pressing claw is configured to mount the printed board when the pressing is released from the printed board, and the printed board is movable in a plane direction of the pallet body. The transport pallet for a printed circuit board according to any one of claims 2 to 6.