CN217892291U - A transmission production line for production of PCB board - Google Patents

Abstract

The utility model discloses a transmission production line for PCB production, which comprises a plate chain conveyor and a PCB character ink-jet printer arranged above the plate chain conveyor; the plate chain conveyor can automatically clamp and release workpieces at the front end and the rear end, and comprises a rack, a plurality of chain plate bodies arranged on the rack, clamping assemblies arranged at the left end and the right end of each chain plate body and a clamping regulation and control mechanism for controlling the clamping assemblies to increase the distance between the two ends of the plate chain conveyor; the utility model discloses a tight regulation and control mechanism of clamp of setting in plate chain conveyer has realized the removal of clamping unit to realized the self-holding and the release of work pieces such as the tool board of carrying on to plate chain conveyer, and can also realize pressing from both sides the lower pressure of tight piece through the relative motion of spigot surface and walking wheel when pressing from both sides tightly about the work piece, come to compress tightly the upper surface of work piece, can improve the accurate stability of PCB board conveying.

Description

A transmission production line for production of PCB board

Technical Field

The utility model belongs to the technical field of transmission production facility, especially, relate to a transmission production line for production of PCB board.

Background

An important step in the processing of PCBs (i.e., printed circuit boards) is the printing of character lines, which is generally printed by a PCB character inkjet printer, and the position of the PCB needs to be fixed during the printing process. To automatic production line, in order to realize automatic printing, can set up the conveyer in PCB character inkjet printer's downside, with the PCB board on the conveyer belt transmission, can set up clamping mechanism simultaneously on the conveyer belt, press from both sides tight to the PCB board, but present clamping mechanism only can press from both sides tight to the both sides of carrying on the tool board of PCB board, can not compress tightly from the top of tool board. And PCB character ink jet printer when wanting to print the PCB board of below, the conveyer belt can pause in order to stop the assigned position under PCB character ink jet printer with the PCB board, but owing to only press from both sides tight the both sides of tool board, still can cause tool board drunkenness displacement, and present clamping mechanism need set up the last unloading that realizes the tool board at the outside complementary unit of conveyer more, need occupy additional space, is unfavorable for whole production line area's reduction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: there is provided a transmission line for PCB production, which aims to solve the above mentioned problems in the background art.

The utility model adopts the technical scheme as follows:

a transmission production line for PCB production comprises a plate chain conveyor and a PCB character ink-jet printer arranged above the plate chain conveyor; the plate chain conveyor can automatically clamp and release workpieces at the front end and the rear end, and comprises a rack, a plurality of chain plate bodies arranged on the rack, clamping assemblies arranged at the left end and the right end of each chain plate body and a clamping regulation and control mechanism for controlling the clamping assemblies to increase the distance between the two ends of the plate chain conveyor;

the clamping assembly comprises a clamp guide body arranged on the lower side of the chain plate body, and a locking seat and a clamp body which are connected to the clamp guide body in a left-right sliding manner;

one end of the locking seat, which is far away from the center of the chain plate body, is provided with an upward inclined guide surface;

the clamp body comprises a clamp main shell, a horizontal push wheel arranged on the lower side of the clamp main shell, a clamping inner rod which is arranged in the clamp main shell and can move up and down in the clamp main shell and automatically reset, a clamping sheet which is arranged on the clamping inner rod and extends to the upper part of the chain plate body, and a travelling wheel arranged at the lower end of the clamping inner rod, wherein the travelling wheel can travel along the guide surface; the locking seat is connected with the clamp main shell through a tensioning spring;

the clamping regulation and control mechanism comprises positioning regulation plates arranged on two sides of the rack, and the horizontal pushing wheels walk along the edges of the outer side surfaces of the positioning regulation plates.

Furthermore, thick edge parts are arranged at two ends of the outer side surface of the positioning adjusting plate, and the flat push wheel moves to two ends of the positioning adjusting plate and then walks on the thick edge parts.

Furthermore, the clamping piece is detachably arranged at the top end of the clamping inner rod.

Furthermore, one end, far away from the chain plate body, of the locking seat is provided with a left-right direction accommodating groove, the clamp main shell is arranged in the accommodating groove, the number of the guide surfaces is two, and the guide surfaces are respectively located on the front side and the rear side of the clamp main shell.

Furthermore, the periphery of the positioning adjusting plate is provided with a whole derivation groove, and the lower side of the locking seat is provided with a whole pushing wheel which walks in the whole derivation groove.

Further, be provided with in the frame and press from both sides tight width adjustment mechanism, it is in to press from both sides tight width adjustment mechanism and include to rotate the assembly along left right direction drive screw in the frame, drive screw is by setting up the first motor drive in the frame, two be provided with screw hole opposite in screw thread direction on the location regulating plate, drive screw's both ends are provided with the screw thread section that matches with the screw thread of both sides respectively.

Furthermore, the driving screws are arranged at two ends of the positioning adjusting plate and are respectively a main driving screw driven by a first motor and a slave driving screw in transmission connection with the main driving screw; and a middle guide rod with two ends fixedly arranged is arranged in the middle of the positioning adjusting plate in a penetrating way.

Furthermore, side bearings are arranged on two sides of the rack, a supporting plate is supported between the two transverse side bearings, a guide rail extending in the front-back direction is arranged on the supporting plate through a guide rail supporting block, and a guide wheel set capable of walking along the guide rail is arranged on the lower side of the chain plate body.

Furthermore, the cross section of guided way is the L type, the guide wheel group includes the first gyro wheel of walking along the vertical face of guided way and the second gyro wheel of walking along the horizontal face of guided way.

Furthermore, the PCB character ink-jet printer is arranged on an upper frame, side supporting plates are connected to two sides of the upper frame, side supporting seats corresponding to the side bearings are arranged on the outer sides of the side supporting plates, and the side supporting seats are arranged at the top ends of the side supports.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a tight regulation and control mechanism of clamp of setting in plate chain conveyer has realized the removal of clamping unit to realized the self-holding and the release of work pieces such as the tool board of carrying on to plate chain conveyer, and can also realize pressing from both sides the lower pressure of tight piece through the relative motion of spigot surface and walking wheel when pressing from both sides tightly about the work piece, come to compress tightly the upper surface of work piece, can improve the accurate stability of PCB board conveying.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is an enlarged view of the present invention at I of FIG. 1;

fig. 4 is an installation schematic view of the positioning adjustment plate of the present invention;

fig. 5 is a schematic view of the installation of the clamping assembly of the present invention;

fig. 6 is a schematic structural view of the clamping assembly of the present invention;

fig. 7 is a schematic structural view of the clamp body of the present invention;

fig. 8 is a schematic sectional view of the clamp body according to the present invention.

The labels in the figure are: 1. a frame; 2. side bearings; 3. a side support; 4. a side support plate; 5. a PCB character inkjet printer; 6. Putting on a shelf; 7. a chain plate body; 8. a clamping piece; 9. a driven fixed component is tensioned; 10. a driven shaft; 11. a drive shaft; 12. A main drive screw; 13. a driven screw; 14. a middle guide rod; 15. positioning an adjusting plate; 16. a thick edge portion; 17. a whole direction-guiding groove; 18. a guide rail; 19. a guide wheel set; 20. a guide rail supporting block; 21. a synchronizing wheel; 22. a support wheel; 23. An encoder mounting plate; 24. a second motor mounting plate; 25. a first motor; 26. a clamp guide body; 27. a first slideway; 28. a second slideway; 29. a locking seat; 30. a guide surface; 31. a traveling wheel; 32; a horizontal pushing wheel; 33. a push wheel is arranged; 34. A pull rod; 35. a clamp main shell; 36. clamping the pulling plate; 37. a second slide bar; 38. a pull ring; 39. clamping the inner rod; 40. a compression spring; 41. the spring is tensioned.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, a conveying line for PCB board production, a plate chain conveyor and a PCB character ink-jet printer 5 disposed above the plate chain conveyor; the plate chain conveyor can automatically clamp and release workpieces at the front end and the rear end, and comprises a rack 1, a plurality of chain plate bodies 7 arranged on the rack 1, clamping assemblies arranged at the left end and the right end of each chain plate body 7 and a clamping regulation and control mechanism for controlling the clamping assemblies to increase the distance between the two ends of the plate chain conveyor;

the clamping assembly comprises a clamp guide body 26 arranged on the lower side of the chain plate body 7, and a locking seat 29 and a clamp body which are connected to the clamp guide body 26 in a left-right sliding manner;

one end of the locking seat 29, which is far away from the center of the chain plate body 7, is provided with an upward inclined guide surface 30; one end of the locking seat 29 far away from the guide surface 30 is connected with a tension spring 41 through a pull rod 34;

the clamp body comprises a clamp main shell 35, a horizontal push wheel 32 arranged on the lower side of the clamp main shell 35, a clamping inner rod 39 which is arranged in the clamp main shell 35 and can move up and down in the clamp main shell 35 and automatically reset, a clamping sheet 8 which is arranged on the clamping inner rod 39 and extends to the upper part of the chain plate body 7, and a walking wheel 31 arranged at the lower end of the clamping inner rod 39, wherein the walking wheel 31 can walk along the guide surface 30; the clamping inner rod 39 can rotate in the clamp main shell 35, and the rotatable clamping inner rod 39 ensures that the horizontal push wheel 32 is well jointed when walking along the edge of the positioning adjusting plate 15; the other end of the tension spring 41 is connected to the pull ring 38 of the clamp main shell 35; the clamping inner rod 39 is reset through a compression spring 40 arranged in the clamp main shell 35; the clamp bodies move synchronously along with the locking seat 29 when the locking seat 29 is shifted by the positioning adjusting plate 15 through the tension spring 41, so that the minimum distance between the two clamps is adjusted, and the workpieces or jigs with different widths are adapted;

the clamping regulation and control mechanism comprises positioning regulation plates 15 arranged at two sides of the rack 1, thick-edge parts 16 are arranged at two ends of the outer side surfaces of the positioning regulation plates 15, the flat push wheels 32 walk along the edges of the outer side surfaces of the positioning regulation plates 15, and the flat push wheels 32 walk on the thick-edge parts 16 when moving to two ends of the positioning regulation plates 15;

in the use process, the tension spring 41 is always in an extension state, so that the two clamp bodies tend to approach each other to clamp the workpiece; when the horizontal push wheel 32 reaches the thick-edge part 16 along with the transmission of the plate chain body, the distance between the two clamping inner rods 39 can be increased, so that the clamping inner rods 39 are loosened from the left side and the right side of a workpiece, and meanwhile, due to the existence of the inclined guide surface 30, when the walking wheel 31 moves on the guide surface 30, the clamping sheet 8 can be driven to move up and down through the clamping inner rods 39; due to the presence of the tension spring 41

Specifically, at the feeding end of the plate chain conveyor, the horizontal push wheels 32 slide out from the rear end of the thick edge part 16, the distance between the two horizontal push wheels 32 is reduced, the clamp main shell 35 moves towards the central line direction of the long edge of the chain plate body 7, the extended tensioning spring 41 provides tension, so that the clamping inner rod 39 clamps a workpiece from the left direction and the right direction, meanwhile, the walking wheels 31 move downwards on the guide surface 30, and the clamping pieces 8 move downwards, so that the workpiece is automatically pressed; at the blanking end of the plate chain conveyor, the flat push wheels 32 reach the thick edge part 16 at the rear end from the middle part of the positioning adjusting plate 15, the distance between the two flat push wheels 32 is increased, the clamp main shell 35 moves towards the two ends of the chain plate body 7, the clamped workpiece is released from the left and right directions, meanwhile, the walking part moves upwards along the guide surface 30, the clamping piece 8 moves upwards, and the clamping piece 8 is released by pressing the workpiece; the utility model realizes the effective fixation of the position of the workpiece through the matching of the positioning adjusting frame and the clamp assembly, and realizes the automatic compression and release of the left side, the right side and the upper side of the workpiece;

further, one end of the locking seat 29, which is far away from the link plate body 7, is provided with a left-right direction accommodating groove, the fixture main shell 35 is arranged in the accommodating groove, and the number of the guide surfaces 30 is two and is respectively located at the front side and the rear side of the fixture main shell 35; a clamping pulling plate 36 is arranged at the lower end of the clamping inner rod 39 through a bolt, the travelling wheels 31 are rotatably assembled on the front side and the rear side of the clamping pulling plate 36 corresponding to the guide surface 30, a clamp spring protrusion is arranged at the upper part of the clamping inner rod 39, and the compression spring 40 is arranged between the clamp spring protrusion and the bottom wall of the inner cavity of the clamp main shell 35; a bearing or a ball bushing can be arranged at the position, which is in contact with the clamping inner rod 39, on the clamp main shell 35, so that the clamping inner rod 39 can move up and down and the rotation resistance is reduced;

specifically, the jig guide body 26 comprises a guide body with a length direction and conductor holes arranged in the guide length direction of the jig, and guide body mounting holes for mounting the guide body on the lower side of the chain plate body 7 are arranged at two ends of the guide body; a first slide way 27 is arranged on the outer side wall of the long edge of the conductor hole, a second slide way 28 is arranged on the inner wall of the long edge of the conductor hole, a first slide bar in sliding fit with the first slide way 27 is horizontally arranged on the locking seat 29, and a second slide bar 37 in sliding fit with the second slide way 28 is horizontally arranged on the clamp main shell 35; due to the adoption of the two first slide ways 27 and the second slide ways 28 which are oppositely arranged, the stable connection between the locking seat 29 and the clamp body is realized, so that the locking seat 29 and the clamp body are more stable when being moved by external force and are not easy to shake.

Further, the clamping piece 8 is detachably arranged at the top end of the clamping inner rod 39;

specifically, the middle part of the clamping piece 8 is provided with a central hole, the top of the clamping inner rod 39 is provided with a threaded blind hole, the clamping piece 8 can be installed at the top of the clamping inner rod 39 through a bolt, and the size, the shape and the height of the clamping piece 8 can be changed according to the shape and the thickness of a jig used in practice, so that the clamping piece has wider adaptability.

Furthermore, the periphery of the positioning adjusting plate 15 is provided with a whole direction-deriving groove 17, and the lower side of the locking seat 29 is provided with a whole pushing wheel 33 which runs in the whole direction-deriving groove 17;

specifically, the positioning adjustment plate 15 can independently adjust one position each time, or can adjust two positions synchronously, preferably, the positioning adjustment plates 15 on two sides are synchronously adjusted; preferably, a pushing auxiliary wheel outside the pushing guide groove 17 is arranged on the lower side of the locking seat 29, the pushing auxiliary wheel travels along the inner side of the positioning adjustment plate 15, and the pushing auxiliary wheel 33 and the pushing auxiliary wheel can travel along the inner side and the outer side of the side wall of the pushing guide groove 17 at the same time, so that the locking seat 29 can be accurately positioned; the position of the locking seat 29 can be adjusted when the positioning adjusting plate 15 is adjusted, so that the position of the clamp body can be adjusted by tightening the spring 41, and the clamping width of the clamping assembly can be adjusted.

Further, a clamping width adjusting mechanism is arranged on the machine frame 1, the clamping width adjusting mechanism is used for adjusting the position of the positioning adjusting plate 15, and the clamping width adjusting mechanism can be an oil cylinder, an electric push rod and the like arranged on the machine frame 1;

since the workpiece is generally conveyed along the center of the conveying plate chain, preferably, the center of clamping is always kept at the center of the conveying plate chain, and a clamping width adjusting mechanism for simultaneously driving the two positioning adjusting plates 15 is adopted, specifically, the clamping width adjusting mechanism comprises a driving screw rod which is rotatably assembled on the frame 1 along the left-right direction, the driving screw rod is driven by a first motor 25 arranged on the frame 1, the first motor 25 is installed on the inner side of the frame 1 through a first motor 25 mounting plate and then is connected to the driving screw rod through a belt pulley and a belt in a transmission manner, threaded holes with opposite thread directions are formed in the two positioning adjusting plates 15, a screw nut similar structure can be adopted to be matched with the driving screw rod, and thread sections matched with the threads on the two sides are arranged at the two ends of the driving screw rod respectively; the threads of the two thread sections have the same specification except the opposite directions, and the two positioning adjusting plates 15 are simultaneously pushed by the screw rods, so that the working is reliable and the service life is long;

specifically, the driving screws are arranged at two ends of the positioning adjusting plate 15 and respectively include a main driving screw 12 driven by a first motor 25 and a slave driving screw 13 in transmission connection with the main driving screw 12; a middle guide rod 14 with two ends fixedly arranged is arranged in the middle of the positioning adjusting plate 15 in a penetrating manner, two ends of the middle guide rod 14 are fixed on the side support 3, the middle guide rod 14 is a polished rod, and the middle guide rod 14 slides in a middle guide shaft;

specifically, the synchronous wheels 21 are installed on the same side of the main driving screw 12 and the slave driving screw 13, and the two synchronous wheels 21 are connected through a synchronous belt, so that the power of the main driving screw 12 is transmitted to the slave driving screw 13, and the synchronous slippage of the two ends of the positioning adjusting plate 15 is realized; in addition, in order to realize tensioning adjustment and anti-hanging support of the synchronous belt, a tensioning mechanism and a support wheel 22 are arranged on the rack 1 on one side of the synchronous belt, the tensioning mechanism comprises a tensioning adjusting rod with adjustable height and a tensioning adjusting wheel rotatably arranged on the tensioning adjusting rod, and the tensioning adjusting wheel is connected with the synchronous belt; the supporting wheel 22 is a smooth surface wheel, which is pressed against the smooth surface of the synchronous belt to properly support the synchronous belt.

Further, side bearings 2 are arranged on two sides of the frame 1, a supporting plate is supported between the two lateral bearings 2, a guide rail 18 extending in the front-back direction is arranged on the supporting plate through a guide rail supporting block 20, and a guide wheel set 19 capable of walking along the guide rail 18 is arranged on the lower side of the chain plate body 7; the guide rail 18 is used for supporting the plate chain body, strengthening the support of the plate chain body and preventing the middle of the plate chain body from sinking due to the weight of a workpiece;

specifically, the two ends of the guide rail 18 are provided with slope surfaces, and the slope surfaces are convenient for the guide wheel set 19 to stably and easily enter the guide rail 18.

Further, the cross section of the guide rail 18 is L-shaped, and the guide wheel set 19 includes a first roller running along the vertical surface of the guide rail 18 and a second roller running along the transverse surface of the guide rail 18;

specifically, two guided way 18 set up relatively for guide wheel group 19 all sets up the inboard at guided way 18, except can providing the support for the link joint body 7 in carrying, can also avoid rocking about in the plate link chain transmission process.

Further, the PCB character ink-jet printer 5 is installed on an upper frame 6, side supporting plates 4 are connected to two sides of the upper frame 6, side supporting seats 3 corresponding to the side bearings 2 are arranged on the outer sides of the side supporting plates 4, supporting seat holes are formed in the bottom surfaces of the side supporting seats 3, top threaded holes are formed in the top surfaces of the side supporting seats, and the side supporting seats 3 are installed on the top ends of the side supporting seats through bolts.

Further, the plate chain conveyor also comprises a plate chain driving mechanism for driving the chain plate body 7 to rotate, and the plate chain conveyor can adopt a conventional plate chain driving mechanism and usually comprises a driving motor, a driving shaft 11, a driven shaft 10 and an encoder; specifically, in the present application, the driving motor of the plate link chain driving mechanism is a second motor, and is arranged on the rack 1 through a second motor mounting plate 24; the encoder is arranged in the frame 1 through an encoder mounting plate 23 and is connected to the driving shaft 11 through a belt in a transmission way; a tensioning driven fixing assembly 9 for adjusting the tightness of the chain plate chain is also arranged on the frame 1 and is used for adjusting the position of the driven shaft 10.

Claims (10)

1. The utility model provides a transmission production line for PCB board production which characterized in that: the PCB character ink-jet printer comprises a plate chain conveyor and a PCB character ink-jet printer (5) arranged above the plate chain conveyor; the plate chain conveyor can automatically clamp and release workpieces at the front end and the rear end, and comprises a rack (1), a plurality of chain plate bodies (7) arranged on the rack (1), clamping assemblies arranged at the left end and the right end of each chain plate body (7) and a clamping regulation and control mechanism for controlling the clamping assemblies to increase the distance between the two ends of the plate chain conveyor;

the clamping assembly comprises a clamp guide body (26) arranged on the lower side of the chain plate body (7), and a locking seat (29) and a clamp body which are connected to the clamp guide body (26) in a left-right sliding mode;

one end of the locking seat (29) far away from the center of the chain plate body (7) is provided with a guide surface (30) inclining upwards;

the clamp body comprises a clamp main shell (35), a horizontal push wheel (32) arranged on the lower side of the clamp main shell (35), a clamping inner rod (39) which is arranged in the clamp main shell (35), can move up and down in the clamp main shell (35) and automatically resets, a clamping piece (8) which is arranged on the clamping inner rod (39) and extends to the upper part of the chain plate body (7), and a travelling wheel (31) arranged at the lower end of the clamping inner rod (39), wherein the travelling wheel (31) can travel along the guide surface (30); the locking seat (29) is connected with the clamp main shell (35) through a tensioning spring (41);

the clamping regulation and control mechanism comprises positioning regulation plates (15) arranged on two sides of the rack (1), and the flat push wheels (32) are arranged along the edges of the outer side surfaces of the positioning regulation plates (15).

2. The conveying line for the production of the PCB according to claim 1, wherein the two ends of the outer side surface of the positioning adjusting plate (15) are provided with thick edge parts (16), and the flat push wheels (32) walk on the thick edge parts (16) when moving to the two ends of the positioning adjusting plate (15).

3. The transfer line for PCB production of claim 1, wherein the clamping sheet (8) is detachably arranged at the top end of the clamping inner bar (39).

4. The conveying production line for PCB production as recited in claim 1, wherein one end of the locking seat (29) far away from the chain plate body (7) is provided with a left-right direction containing groove, the clamp main shell (35) is arranged in the containing groove, and the number of the guide surfaces (30) is two and is respectively positioned at the front side and the rear side of the clamp main shell (35).

5. The conveying line for PCB production as recited in claim 1, wherein the positioning adjustment plate (15) is provided with a push guide groove (17) at its periphery, and the locking seat (29) is provided at its lower side with a push wheel (33) running in the push guide groove (17).

6. The conveying production line for PCB production as claimed in claim 5, wherein the rack (1) is provided with a clamping width adjusting mechanism, the clamping width adjusting mechanism comprises a driving screw rotatably assembled on the rack (1) along the left-right direction, the driving screw is driven by a first motor (25) arranged on the rack (1), two positioning adjusting plates (15) are provided with threaded holes with opposite thread directions, and two ends of the driving screw are provided with threaded sections respectively matched with the threads on two sides.

7. The conveying line for PCB production of claim 6, wherein the driving screws are arranged at two ends of the positioning adjusting plate (15) and are respectively a main driving screw (12) driven by a first motor (25) and a slave driving screw (13) in transmission connection with the main driving screw (12); and a middle guide rod (14) with two ends fixedly arranged penetrates through the middle part of the positioning adjusting plate (15).

8. The conveying production line for PCB production as recited in claim 1, characterized in that side bearings (2) are arranged on both sides of the frame (1), a supporting pallet is supported between the two lateral bearings (2), a guide rail (18) extending in the front-back direction is arranged on the supporting pallet through a guide rail supporting block (20), and a guide wheel set (19) capable of walking along the guide rail (18) is arranged on the lower side of the link plate body (7).

9. The transfer line for PCB production of claim 8, wherein the guide rail (18) has an L-shaped cross section, and the guide wheel set (19) comprises a first roller running along a vertical surface of the guide rail (18) and a second roller running along a transverse surface of the guide rail (18).

10. A conveying production line for PCB production as claimed in claim 8 wherein the PCB character ink-jet printer (5) is mounted on an upper frame (6), side support plates (4) are connected to both sides of the upper frame (6), side supports (3) corresponding to the side supports (2) are arranged on the outer sides of the side support plates (4), and the side supports (3) are mounted on the top ends of the side supports.

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