JP3066180U - Cantilever type screen print slide and drive - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention relates to a cantilever type screen-printing machine, and in particular, a completed union moves a print head up, down, left and right,
Achieve high speed and high precision printing. The present invention includes a lifting mechanism, a horizontal slide assembly, a vertical driving device, and a printing thickness fine adjustment device. The lifting mechanism is composed of two identical aluminum columns symmetrically upright, and the horizontal slide assembly is composed of another aluminum column. Each aluminum column has a different cross section and has sufficient rigidity. Attach the steel slide rail directly to the lifting slide assembly, and simultaneously connect the steel slide rail to the guide block,
The guide block connects the adjustable slide pair and the horizontal slide assembly so that the print thickness can be easily fine-tuned. The guide block is connected to the drive rod of the gear reduction motor, and the horizontal slide assembly moves up and down. Also, there is enough space inside the horizontal slide assembly to use it to fix necessary parts.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cantilever type screen-printing machine, and more particularly to a technique in which a completed union body moves a print head up and down and left and right to achieve high-speed and high-precision printing.

[0002]

[Prior art]

 The cantilever type screen-printing machine is an important printing equipment in the current printing industry, especially suitable for precision printing of electronic circuit boards. The basic structure of a cantilever type screen printing device consists of a lifting mechanism with the bottom of the machine base, the printing surface on the front of the machine surface, and two cylinders provided at the back of the bottom seat. Attach a horizontal slide assembly that can be moved up and down in front of the lifting mechanism, provide a print head that moves left and right on the horizontal slide assembly, and provide cantilever arms at both ends of the horizontal slide assembly to support the screen plate holder and perform printing work. On the printing table. Therefore, it is called a cantilever type, and it is equipped with the entire combination of the horizontal slide assembly, print head, left and right cantilever type arm, screen plate holder, etc. on the front side of the lifting mechanism, all weights are supported by the lifting mechanism, and the printing machine is Form a cantilevered state. Currently used cantilever screen printing equipment has almost all the same slides and drives, and the conventional structure has the following disadvantages.

[0003] (1) The conventional lifting mechanism is composed of two cylindrical pillars, and when a cantilever-type combination is lifted to a certain height and a load is applied, a phenomenon in which a slight forward bending occurs due to insufficient rigidity occurs. However, when actually surveyed, the axis center falls forward by about 0.1 to 0.2 mm. This affects precision printing, making it impossible to perform high-precision work, and is not suitable for high-speed vertical operation of a cantilever type assembly. (2) Since the conventional horizontal slide assembly is mostly made of cast aluminum, the rigidity is clearly insufficient, and the print head is deformed when the left and right strokes are long. Therefore, it is not suitable for high-speed movement of the print head, and cannot be easily assembled because there is no space for incorporating other parts inside, and it is relatively easily damaged during work. (3) Since the conventional driving device completely uses the pneumatic drive corresponding to the lifting mechanism and the horizontal slide assembly, the braking force and the speed are obviously insufficient. As a result, conventional printing equipment could not achieve the speedy printing and mass production required by manufacturers. (4) The conventional print thickness fine adjustment device is provided with a fine adjustment handwheel on the upper surface of the elevating mechanism. The upper end of the long screw rod is connected to the handwheel and the lower end is connected to the cylinder seat. The height was fine-tuned, and the fine adjustment of the height was simultaneously changed on the horizontal slide assembly that the cylinder moved. However, in this device, the position of the handwheel was too high to operate easily, and its accuracy could not be easily controlled.

[0004]

[Problems to be solved by the invention]

 The lifting slide assembly is constructed by symmetrically installing aluminum columns. The horizontal slide assembly uses aluminum pillars, and at the same time, with different cross-sectional structures of each aluminum pillar, combined with other parts to give the entire slide assembly sufficient rigidity, and at the same time to achieve high speed and high precision printing work. To achieve.

[0005]

[Means for Solving the Problems]

 The present invention relates to the main body structures such as a lifting mechanism, a horizontal slide assembly, a vertical driving device, and a printing thickness fine adjustment device, and the connection and operation relationship therebetween. Among them, the lifting mechanism consists of two identical aluminum columns upright symmetrically, and the horizontal slide assembly is composed of another aluminum column. Each aluminum column has a different cross section and sufficient rigidity. Attach the steel slide rail directly to the lifting slide assembly, and at the same time connect the steel slide rail to the guide block, and the guide block connects the adjustable slide pair and the horizontal slide assembly to easily fine-tune the printing thickness It can be so. The guide block is connected to the drive rod of the gear reduction motor, and the horizontal slide assembly moves up and down. Also, there is enough space inside the horizontal slide assembly to use it to fix necessary parts. The print head is moved up, down, left, and right in the entire union to achieve high-speed and high-precision printing.

[0006]

[Embodiment of the invention]

 As shown in FIGS. 1 and 2, the cantilever type screen printing apparatus basically includes main parts such as a main body 10, a printing surface 20, a horizontal slide assembly 30, and a lifting mechanism 40. The horizontal slide assembly 30 includes a cantilever arm 50 and a related device such as a screen plate holder connected to the left and right ends thereof, and a print head assembly (in the figure) that moves left and right on the horizontal slide assembly 30. Is omitted). The printing table surface 20 is installed in front of the machine surface 11 of the machine body 10, and the elevating mechanism 40 is installed behind the machine surface 11. Also, the horizontal slide assembly 30 is connected to the front of the lifting mechanism 40, and at the same time, the entire horizontal slide assembly 30 is supported by the lifting mechanism 40 to perform vertical movement. As shown in FIGS. 3, 4, and 5, the elevating mechanism 40 erects two aluminum columns 41 of the same length upright behind the machine base surface 11. The cross section of the aluminum column 41 is most ideally as shown in FIG. 4. A relatively long vertical surface 411 is made relatively small in width, and convex edges 413 are provided at both ends of the vertical surface 411. The cross section has a convex edge 413 and a plurality of mouth-shaped inner empty tanks 414. It increases the strength and rigidity of the whole column, and the width of the vertical surface 411 is about 3.5 times the diameter of the conventional cylindrical column, so that its bending resistance is far superior to the conventional one. The entire horizontal slide assembly 30 is supported and stably moved up and down at a high speed to prevent vibration. Not only does it not fall down, it also achieves higher speed. Further, a plurality of C-shaped tank holes 415 are provided at appropriate positions in the cross section. In addition, a screw hole is machined to provide the upper cross beam 42 for directly fixing to the upper end of the aluminum column 41, and the bottom end of the aluminum column 41 is fixed on the bottom sheet 43. In addition, the bottom sheet 43 is again fixed on the machine base surface 11 and fixed, and the two parallelly installed upright aluminum columns 41 are easily assembled by the upper cross beam 42 and the bottom sheet 43 to form a solid structure. Can make up the body. Further, a conductive tank 416 is formed between the two protruding edges 413 inside the two aluminum columns 41, and a steel slide rail 44 and a slide 45 moving thereon are fixed to the conductive tank 416. The slide 45 is connected to a guide block 46, and the guide block 46 is fixed to the two aluminum columns 41 to stabilize the vertical movement.

Further, as shown in FIGS. 1, 5, 6, and 7, a print head assembly 60 that moves left and right is connected to the front edge of the horizontal slide assembly 30 (see FIG. 7). The main body of the horizontal slide assembly 30 includes parts such as a main seat 31, a support portion 32, a steel slide rail 33, a cover 34, a cantilever arm holder 35, a photoelectric switch 36, and a belt 37. Among them, the main seat 31 is a columnar structure, the main seat 31 includes a relatively long vertical body 311 and upper and lower horizontal projecting edges 312, and a plurality of mouth-shaped air-core tanks 313 in an appropriate cross section. Provided to provide a stiffening effect. Further, a plurality of C-shaped tank holes 314 are provided, the screw holes are machined to be integrated with the cantilever arm holder 35, and then fixed with screws. Further, the respective horizontal conductive tanks 315 are provided at both upper and lower symmetrical positions of the concave portion in the main seat body 31, and the steel slide rails 33 are fastened and fixed. A slightly convex horizontal plane convex portion 316 is provided at the center position of the inner concave portion, and the support portion 32 is fastened and fixed. Since the connection and interlocking relationship between the upper and lower steel slide rails 33, the belt 37 and the print head assembly 60 are similar to those of the related art, detailed description will not be given here. The intermediate opening 321 of the support portion 32 faces the central long tank hole 341 of the cover 34, and the upper and lower flanges 322 are located at an appropriate distance above and below the long tank hole 341, and are fixed at the middle of the cover 34. Provide a point to accommodate the length and strength of the cover. The appropriate holes 342 and screw holes on the flange 322 are then aligned to prevent the cover from being too long and soft and loose, thus easily generating vibration and noise during high speed operation.

Further, in the structure of the main seat body 31 and the support portion 32, all of them have a penetration space for the inner hollow core tank, and other pipelines and the like are installed in the protection tank. Atmospheric pipes and electrical conductors, which are likely to be complicated, will be installed in each of the air core tanks so that they can be neatly installed and repaired. In particular, a photoelectric switch 36 is installed in the support portion 32, and the photoelectric switch 36 controls the end point or the buffer point of the left and right movement of the print head assembly 60 on the main seat 31. When printing, be sure to adjust the size of the printing plate and the position of the photoelectric switch 36. For this reason, the photoelectric switch 36 always has mobility, and after being moved, it is always fixed and prevented from being separated, so that the print head may hit the screen plate holder and be damaged after being moved without the operator's knowledge. To prevent. As shown in FIG. 8, the photoelectric switch 36 is a combination of a front clamp sheet 361 and a rear clamp sheet 362, which are separated by an opening 321 and are fixed together by an adjustment screw 363 on the clamp wall 323. . Again, the photoelectric sensitizer 364 is fixed to the side of the rear clamp sheet 362 and fixed, and is extended forward to face the long tank hole 341 directly from the opening 321 to directly sense the moving position of the print head assembly 60. When moving, the operator inserts a long screwdriver directly from the cover 34 and loosens the adjusting screw 363. It is a practical design because it can be moved laterally again by applying lateral force, the position is determined and tightened, and the entire adjustment operation can be adjusted with one hand using a screwdriver. The flexible electric wire of the photoelectric switch 36 can be completely mounted in the support portion 32, and entanglement and breakage during movement can be avoided. Therefore, the support portion 32 supports and stabilizes the cover 34, the photoelectric switch 36 is easily adjusted, and the tube installed inside has a variety of practical functions such as isolation and protection.

As shown in FIG. 9, the vertical driving device of the present invention uses a gear reduction motor 70 as a main driving force, and includes a guide block 46, an aluminum column 41, a steel slide rail 44, and the like. Among them, the gear reduction motor 70 is on the market. It is installed on the bottom seat 12 which can be adjusted to the front, rear, left and right behind the bottom of the machine body 10, and the output crank 71 of the gear reduction motor 70 is driven by the drive rod 72. The driving rod 72 is connected to the center of the rear surface of the guide block 46 through the machine base surface 11 and the bottom sheet 43. By the high-speed operation of the gear reduction motor 70 and the interlocking of the drive rod 72, the guide block 46 and the horizontal slide assembly 30 perform high-speed vertical movement with excellent balance and stability. FIG. 10 differs from the design of FIG. 9 in that the gear reduction motor 70 moves from the bottom of the machine body 10 to the surface 11 of the machine. Naturally, in the design of the present invention, the installation position of FIG. 9 is ideal, and the operation state of the output crank 71 and the drive rod 72 is as shown in FIG. 11, and the operation state of FIG. 10 is as shown in FIG. Among them, the included angle between the drive rod 72 and the vertical line is θ and θ ′, and the included angle θ shown in FIG. 11 is small. If the output of the output crank 71 is the same, the force with the smaller included angle θ is the pivot 73. Has a large effective action force. This indicates that the machine power is high, so that when the gear reduction motor 70 is installed at the bottom, relatively good braking force is provided for the same standard product. In other words, under the condition that the same braking force is achieved, the cost can be reduced by employing a gear reduction motor with a relatively small force.

Referring again to FIGS. 1 and 7, a print head assembly 60 is provided at the front edge of the horizontal slide assembly 30 and both left and right cantilever arms 50 are provided to sandwich the entire screen plate. When the horizontal slide assembly 30 moves up and down, the position of the bottom stop affects the printing thickness. For this reason, the fine adjustment device of the horizontal slide assembly 30 and its function are the fine adjustment device of the print thickness and its function. As shown in FIGS. 1, 13, and 14, the fine adjustment device 80 of the present invention mainly includes two main parts, two slide pairs 81 and a handwheel set 82, in which the two slide pairs 81 are left and right. Each one is symmetrically disposed between the guide block 46 and the main seat 31 of the horizontal slide assembly 30, and the slide pair 81 body has two long rails and moves stably between each other. It is installed in the vertical recessed tanks 461 on both sides of the guide block 46, and the rail of the slide pair 81 is fixed and fixed on the guide block 46, and the other rail is provided on the back of the main body 31 of the horizontal slide assembly. It is fastened and fixed on the support piece 317. The guide block 46 and the main seat 31 can not only be tightly combined with each other by the action of the left-right symmetric double-rail assembly but also move relative to each other, and the relative movement is controlled by the hand-wheel assembly. 82. As shown in FIGS. 13, 14, 15, and 16, the handwheel assembly 82 has a bracket 821 provided at the center of the upper surface of the guide block 46. The wheel 822 is mounted on the bracket 821, and at the same time, the wheel 822 connects the screw rod 824 that moves downward to the upper surface of the main seat body 31, controls the turning of the wheel 822, and moves the main seat body 31 up and down the guide block 46. To correspond. A digital meter 823 is disposed below the wheel 822, and the amount of vertical movement generated by the rotation of the wheel 822 is indicated by a change in the number on the digital meter 823, and the operator can easily control it to achieve a fine adjustment function. Further, the vibration generated during the vertical operation at high speed is prevented by the coupling between the guide block 46 and the main body 31 of the horizontal slide assembly. A handle-type fixing screw 83 is installed to adjust the degree of tightening between them. The handle-type fixing screw 83, which can be used immediately, is easily rotated and tightened or loosened to completely connect the guide block 46 and the main seat. To achieve a fixed or relatively mobile relationship. In other words, when fine adjustment is desired, the user can first rotate and loosen, then after fine adjustment, tighten again, and the entire fine adjustment operation can be easily performed.

[0011]

[Effect of the invention]

 The effects of the invention with the above structure are as follows. 1. The lifting slide assembly is constructed by symmetrically installing aluminum columns, and the horizontal slide assembly uses aluminum columns. At the same time, the different cross-sectional structures of each aluminum column combine with other parts to reduce the overall slide assembly to provide sufficient rigidity, and to perform high-speed and high-precision printing. 2. The lifting structure and the horizontal slide assembly constitute a rigid structure. The gear reduction motor is installed below the machine base, its drive rod is directly connected to the guide block, and the guide block is connected to the horizontal slide assembly. Move the assembly up and down at high speed. 3. The horizontal slide assembly is connected to the guide block using an adjustable slide pair, and the guide block is connected to the steel slide rail on the lifting mechanism and moves up and down in connection with the drive rod of the gear reduction motor. Fine adjustment of the connection thickness between the horizontal slide assembly and the guide block allows fine adjustment of the print thickness easily.

[Brief description of the drawings]

FIG. 1 is a perspective view when a lifting mechanism and a horizontal slide assembly are used on a machine base.

FIG. 2 is a perspective view when a lifting mechanism and a horizontal slide assembly are used on a machine base;

FIG. 3 is an assembled perspective view of a lifting mechanism and a horizontal slide assembly.

FIG. 4 is a sectional view of a lifting mechanism.

FIG. 5 is an exploded perspective view of a lifting mechanism.

FIG. 6 is an exploded perspective view of the horizontal slide assembly.

FIG. 7 is a side sectional view of the horizontal slide assembly.

FIG. 8 is a perspective view of the interior of the horizontal slide assembly and interior parts.

FIG. 9 is a perspective view of a driving device.

FIG. 10 is a perspective view showing another embodiment of the driving device.

FIG. 11 is a side view showing an operation state of the driving device.

FIG. 12 is a side view showing another embodiment of the driving device.

FIG. 13 is a perspective view of a print thickness fine adjustment device.

FIG. 14 is an exploded perspective view of the printing thickness fine adjustment device.

FIG. 15 is a side view of the printing thickness fine adjustment device.

FIG. 16 is a side view of the printing thickness fine adjustment device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Machine main body 11 Machine base 12 Bottom seat 20 Printing table 30 Transverse sliding assembly
assembly) 31 main seat body 311 vertical vertical body 312 horizontal convex edge body 313 mouth type air core tank 314 C type tank hole 315 horizontal conductive tank 316 horizontal flat convex part 317 support piece 32 support part 321 opening 322 flange 323 clamp Walls (clamp walls) 33 Steel slide rail
s) 34 Protective cover 341 Long tank hole 342 Hole 35 Cantilever arm holder (cantilever a)
rm holders) 36 Photo switches 361 Front clamping seat 362 Rear clamping seat 363 Adjusting screw 364 Photosensitive device 37 Belt 40 Elevating mechanism 41 Aluminum columns 411 Longitudinal surface 413 Flanges 414 Mouth type inner cavity tank 415 C-shaped tank hole 416 Conductor tank 42 Upper cross beam 43 Bottom seat 44 Steel slide rail
s) 45 slides 46 guide block 461 vertical recessed tank 50 cantilever arms 60 print head assembly 70 gear reduction motor 71 output cranks 72 drive cranks 73 drive rod 73 pivot θ Inclusion angle θ 'Inclusion angle 80 Fine adjustment device 81 Slide pairs 82 Hand wheel assembly 821 Bracket (reversed L-shaped bracket) 822 Wheel (wheel) 824 Screw rod (823) Digital Meter (digital meter) 83 handle type locking me
ans)

Claims (9)

[Utility model registration claims] 1. A cantilever type screen print slide and drive device including a lifting mechanism, a horizontal slide assembly, a vertical drive device, a printing thickness fine adjustment device and the like, and a connection and an operating relationship among them. The mechanism is composed of two identical aluminum columns upright symmetrically, and a steel slide rail is provided directly on the aluminum column, and at the same time both symmetric steel slide rails are connected to the guide block, and the guide block is symmetrical left and right Connect the two adjustable slide pairs with the horizontal slide assembly with the horizontal slide assembly as the main seat with aluminum pillars, with sufficient space for left and right penetration inside and fixing other necessary parts The vertical drive uses the driving force of the gear reduction motor, and the drive rod is directly Connected to the center of the back of the guide block of the lifting mechanism from the bottom upward, the drive guide block is moved up and down, the print thickness fine adjustment device utilizes an adjustable slide pair between the guide block and the horizontal slide assembly, A cantilever type screen print slide and drive characterized in that a handwheel is provided on the upper surface of the guide block and finely adjusted vertically according to the connection position of the guide block of the horizontal slide assembly to achieve fine adjustment of the printing thickness. apparatus. 2. The lifting slide assembly includes two aluminum columns, a steel slide rail, a slide, an upper cross member and a bottom bottom sheet, and assembles two aluminum columns of the same length symmetrically at an appropriate distance. The upper ends of the two aluminum columns are connected to the upper cross beam, the bottom is connected to the bottom sheet, the bottom sheet is fixed on the machine base, and the vertical surface of the aluminum column is relatively long and is connected vertically to the machine surface Then, a plurality of mouth-shaped air-core tanks and C-shaped tank holes are provided at appropriate locations on the cross section.
The cantilever type screen print slide and drive device according to claim 1, wherein a screw hole is machined in the mold tank hole and the upper cross beam and the bottom sheet are directly screwed. 3. The method according to claim 1, wherein two aluminum columns cut out from a long aluminum raw material and having the same length are directly used, and the mouth-shaped air-core tank and the C-shaped tank hole of the aluminum columns are appropriately provided by strength design. The slide and drive device of the cantilever type screen print according to claim 1 or 2. 4. The horizontal slide assembly body includes main parts such as a main seat, a steel slide rail, a support portion, a photoelectric switch, a cover, and associated pneumatic lines and conductive wires, wherein the steel slide rail, a belt,
The photoelectric switch and related pipelines are all mounted in the main seat interior space and covered with a cover. The feature is that the main seat is composed of aluminum pillars, and its cross section has a plurality of mouth-shaped air core tanks. The C-shaped tank hole can be molded, the related pipeline can be installed in the mouth-shaped air tank, and the C-shaped tank hole is machined with screw holes and the cantilever arm holders are screwed on the left and right end surfaces of the main seat. Directly fixed with, and in the inner concave space of the cross section, steel slide rails are provided at the upper and lower positions on the inner surface, a slightly convex horizontal flat convex part is provided in the center, and it is provided to fix the support part on it And the opening of the support part faces the central long tank hole of the cover,
At the same time, the upper and lower horizontal flanges are located at a suitable distance above and below the cover tank hole, provide a point to be fastened and fixed in the middle of the cover, and install a photoelectric switch and related pipeline in the support part internal space, and at the same time The slide and drive device of a cantilever type screen print according to claim 1, wherein the sensitizer extends from an opening of the support portion and directly faces the long hole of the cover. 5. The photoelectric switch is composed of a combination of a front clamp sheet and a rear clamp sheet. The front and rear clamp sheets are separated from each other at an opening of a support portion, and an adjusting screw is passed through the center of the clamp sheet to be integrated to form a single body. When you want to adjust the position of the photoelectric switch by holding it on the clamp wall on both sides of the upper and lower sides of the opening and fixing it again, fixing the photoelectric sensor to the side of the rear clamp sheet and extending it forward and out of the opening of the support part 5. The cantilever type screen print according to claim 1, wherein a screwdriver is inserted into the long tank hole from the outside of the cover to loosen the adjustment screw, and is moved sideways to adjust and determine the position before tightening. Slides and drives. 6. The vertical drive device comprises a gear reduction motor 70.
Is installed at the rear bottom of the machine, the output crank is connected to the lower end of the drive rod, the drive rod is connected to the guide block of the lifting mechanism through the machine surface, and the gear reduction motor can be adjusted forward and backward and left and right The cantilever type screen print slide and drive device according to claim 1, wherein the slide and the drive device are installed on the bottom seat and adjusted. 7. The printing thickness fine-adjustment device is provided with a fine-adjustment wheel at the center of the upper surface of the guide block, and the short screw bar that moves below the wheel is directed downward so that the upper surface of the main seat body of the adjacent horizontal slide assembly is directly positioned. 2. The cantilever type screen print slide and drive device according to claim 1, wherein the vertical rotation between the horizontal slide assembly and the guide block is finely adjusted by turning the wheel. 8. The fine adjustment device for printing thickness, wherein a handle-type fixing screw is installed at a position where the left and right outer surfaces of the guide block and the horizontal slide assembly are in contact with each other, and the guide block and the horizontal slide assembly are easily attached by the handle-type fixing screw. The slide and drive device of the cantilever type screen print according to claim 1 or 7, wherein the fine adjustment is performed by completely tightening or loosening the screen print. 9. The printing thickness fine adjustment device according to claim 1, wherein a digital meter is installed below the fine adjustment wheel, and the fine adjustment amount is indicated by a numeral.
9. A slide and drive device for a cantilever type screen print according to claim 8.