Improved high-precision positioning clamp applied to silk screen printing machine

Abstract

The application provides an improved high-precision positioning clamp applied to a screen printing machine, which comprises a machine body, a supporting table connected to the top of the lifting column, a supporting fixing frame arranged on the side of the operating table, a positioning clamp mechanism arranged on the side of the supporting fixing frame, and an ink knife fixing mechanism arranged at the bottom of the track. Through the arrangement of the limiting piece, the height fixing plate, the first moving block and the second moving block, according to the shape of the printed object, the first telescopic column pushes the limiting piece to move inward, so that multiple limiting pieces on both sides respectively fix the object, so that each limiting piece completely fits the object, the side of the screen printing object is fixed and limited, the application range of the clamp is widened, each group of height fixing control pieces respectively pushes the height fixing plate downward, the second silica gel pad contacts the top surface of the screen printing object, the top of the screen printing object is limited, the first moving block and the second moving block assist in fixing, and the limiting pieces around improve the stability of the fixing.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of printing equipment, in particular to an improved high-precision positioning clamp applied to a silk screen printing machine. BACKGROUND

[0002] Silk screen printing is to print ink on a printing object through silk screen printing, and compared with three major printing methods of embossing, planar printing and concave printing, the silk screen printing is more widely used, and the types of ink and printing materials are more and more various, and the silk screen printing has strong adaptability and can be used for printing of any coating, such as oil-based, water-based, synthetic resin type and powder, and the silk screen printing can be used for printing of ink and coating capable of penetrating the mesh fineness of the silk screen, and the silk screen printing is widely used in fields of commodity packaging, identification, advertisement and circuit board manufacturing.

[0003] The existing improved high-precision positioning clamp applied to the silk screen printing machine has the limitation that the positioning structure of the clamp fixes the object, and can only be used for silk screen printing of a regular-shaped object, so that the application range of the silk screen printing machine is narrow, and when the silk screen printing is performed on objects with different sizes and shapes, the silk screen printing machine or the clamp needs to be replaced, and the overall position of the clamp is fixed, so that the printing object cannot be accurately displaced, and the silk screen printing efficiency is low. SUMMARY

[0004] The application aims to provide an improved high-precision positioning clamp applied to a silk screen printing machine, so as to solve the problem that the existing improved high-precision positioning clamp applied to the silk screen printing machine has the limitation that the positioning structure of the clamp fixes the object, and can only be used for silk screen printing of a regular-shaped object, so that the application range of the silk screen printing machine is narrow, and when the silk screen printing is performed on objects with different sizes and shapes, the silk screen printing machine or the clamp needs to be replaced, and the overall position of the clamp is fixed, so that the printing object cannot be accurately displaced, and the silk screen printing efficiency is low.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: an improved high-precision positioning clamp applied to a silk screen printing machine, comprising a machine body and a positioning clamp mechanism, a workbench is arranged on the top of the machine body, a lifting column is arranged in the workbench, a supporting table is connected to the top of the lifting column, a supporting fixing frame is arranged on the side of the workbench, the positioning clamp mechanism is arranged on the side of the supporting fixing frame, a control panel is arranged on the side of the machine body, a track is arranged at the bottom of the supporting fixing frame, and an ink knife fixing mechanism is arranged at the bottom of the track.

[0006] Preferably, the lifting column penetrates the workbench, and the supporting table and the workbench constitute a lifting structure through the lifting column.

[0007] Preferably, the positioning clamp mechanism comprises a clamp fixing frame, a sliding rail, a sliding block, a supporting plate, a first fixed column, a first telescopic column, a limiting piece, a first silica gel pad, a height fixing control piece, a height fixing plate, a second silica gel pad, a second fixed column, a second telescopic column, a first moving block, a third silica gel pad, a supporting frame, a rotating shaft, a rotating block, a third fixed column, a third telescopic column, a second moving block and a fourth silica gel pad, the side surface of the supporting fixing frame is provided with the clamp fixing frame, the side surface of the clamp fixing frame is provided with the sliding rail, the side surface of the sliding rail is provided with the sliding block, the side surface of the sliding block is provided with the supporting plate, the side surface of the supporting plate is provided with the first fixed column, the inside of the first fixed column is provided with the first telescopic column, one end of the first telescopic column is connected with the limiting piece, the side surface of the limiting piece is provided with the first silica gel pad, the top of the limiting piece is provided with the height fixing control piece, the lower end of the height fixing control piece is connected with the height fixing plate, the surface of the height fixing plate is provided with the second silica gel pad, the side surface of the clamp fixing frame is connected with the second fixed column, the inside of the second fixed column is provided with the second telescopic column, one end of the second telescopic column is connected with the first moving block, the surface of the first moving block is provided with the third silica gel pad, the upper side of the operation table is provided with the supporting frame, the side surface of the supporting frame is provided with the rotating shaft, the side surface of the rotating shaft is provided with the rotating block, the side surface of the rotating block is provided with the third fixed column, the inside of the third fixed column is provided with the third telescopic column, one end of the third telescopic column is connected with the second moving block, and the surface of the second moving block is provided with the fourth silica gel pad.

[0008] Preferably, the supporting plate is in sliding connection with the clamp fixing frame through the sliding block, the sliding block and the sliding rail are symmetrically arranged left and right relative to the clamp fixing frame, and the limiting piece is provided with two groups on the supporting plate.

[0009] Preferably, the first fixed column and the supporting plate are in welded connection, the limiting piece and the supporting plate form a telescopic structure through the first telescopic column, and the first silica gel pad and the limiting piece are in adhesive connection.

[0010] Preferably, the height fixing plate and the limiting piece form a lifting structure through the height fixing control piece, the second silica gel pad and the height fixing plate are in adhesive connection, and the height fixing plate and the limiting piece are one-to-one corresponding.

[0011] Preferably, the first moving block and the second fixed column form a telescopic structure through the second telescopic column, the third silica gel pad and the first moving block are in adhesive connection, the rotating block and the supporting frame form a rotating structure through the rotating shaft, the second moving block and the supporting frame form a telescopic structure through the third telescopic column, and the fourth silica gel pad and the second moving block are in adhesive connection.

[0012] Preferably, the ink knife fixing mechanism comprises a sliding seat, an ink knife displacement control seat, a supporting rod, a lifting rod, a fixed shell and an ink knife, the inside of the track is provided with the sliding seat, the bottom of the sliding seat is connected with the ink knife displacement control seat, the bottom of the sliding seat is connected with the ink knife displacement control seat, the inside of the ink knife displacement control seat is provided with the supporting rod, the inside of the supporting rod is provided with the lifting rod, the bottom of the lifting rod is connected with the fixed shell, and the bottom of the fixed shell is connected with the ink knife.

[0013] Preferably, the ink knife displacement control seat is in sliding connection with the supporting fixed frame through the sliding seat, and the fixed shell is in lifting structure with the supporting rod through the lifting rod.

[0014] Preferably, the fixed shell and the ink knife are provided with two groups, the lifting rod and the fixed shell are provided in one-to-one correspondence, and the ink knife and the fixed shell form a rotating structure.

[0015] Compared with the prior art, the application has the beneficial effects that: an improved high-precision positioning clamp applied to a screen printing machine is provided with limiting pieces, height fixing plates, first moving blocks and second moving blocks, according to the shape of the printed object, the first telescopic column pushes the limiting pieces to move inward, so that multiple limiting pieces on both sides respectively fix the object, according to the external modeling of the object, each limiting piece is completely matched with the object, the side of the screen printing object is fixed and limited, the device is suitable for screen printing of objects with different sizes and shapes, the application range of the clamp is widened, each height fixing control piece respectively pushes the height fixing plate downward, the second silica gel pad contacts the top surface of the screen printing object, the top of the screen printing object is limited, the first moving block and the second moving block assist in fixing, the limiting pieces around improve the stability of the fixing, and the object is prevented from deviating to affect the screen printing effect; when screen printing is performed on another part of the object surface, the two supporting plates simultaneously move on the clamp fixing frame, the control panel is operated to control the overall position movement of the clamp, automatic adjustment of the screen printing object is realized, the accuracy of positioning is increased, the screen printing efficiency is improved, and secondary screen printing operation can be performed after positioning is completed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole front perspective structure schematic diagram of the application;

[0017] Figure 2 It is a positioning clamp mechanism structure schematic diagram of the application;

[0018] Figure 3 It is a limiting piece structure schematic diagram of the application;

[0019] Figure 4 It is a rotating block structure schematic diagram of the application;

[0020] Figure 5 It is a support table structure schematic diagram of the application;

[0021] Figure 6 It is the schematic view of the ink knife fixing mechanism structure of the present application.

[0022] Figure 7 It is the schematic view of the ink knife structure of the present application.

[0023] In the figure: 1, machine body; 2, operation table; 3, lifting column; 4, support table; 5, support fixing frame; 6, positioning clamp mechanism; 601, clamp fixing frame; 602, sliding rail; 603, sliding block; 604, support plate; 605, first fixed column; 606, first telescopic column; 607, limiting piece; 608, first silica gel pad; 609, height fixing control piece; 610, height fixing plate; 611, second silica gel pad; 612, second fixed column; 613, second telescopic column; 614, first moving block; 615, third silica gel pad; 616, support frame; 617, rotating shaft; 618, rotating block; 619, third fixed column; 620, third telescopic column; 621, second moving block; 622, fourth silica gel pad; 7, control panel; 8, track; 9, ink knife fixing mechanism; 901, sliding seat; 902, ink knife displacement control seat; 903, support rod; 904, lifting rod; 905, fixed shell; 906, ink knife. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0025] Please refer to Figures 1-7 The present application provides a technical solution: an improved high-precision positioning clamp applied to a screen printing machine, which comprises a machine body 1 and a positioning clamp mechanism 6. The top of the machine body 1 is provided with an operation table 2. The inside of the operation table 2 is provided with a lifting column 3. The upper part of the lifting column 3 is connected with a support table 4. The side surface of the operation table 2 is provided with a support fixing frame 5. The side surface of the support fixing frame 5 is provided with the positioning clamp mechanism 6. The side surface of the machine body 1 is provided with a control panel 7. The bottom of the support fixing frame 5 is provided with a track 8. The bottom of the track 8 is provided with an ink knife fixing mechanism 9.

[0026] Further, the lifting column 3 penetrates the operation table 2, and the support table 4 and the operation table 2 form a lifting structure through the lifting column 3. In the use process, the object to be printed is placed on the operation table 2, the control panel 7 is operated, the lifting column 3 is mechanically controlled to move upward to lift the object, the object is fixed in place, the manual fixing of the object is replaced, and the safety of the equipment is improved.

[0027] Further, the positioning clamp mechanism 6 comprises a clamp fixing frame 601, a sliding rail 602, a sliding block 603, a support plate 604, a first fixing column 605, a first telescopic column 606, a limiting piece 607, a first silica gel pad 608, a height fixing control piece 609, a height fixing plate 610, a second silica gel pad 611, a second fixing column 612, a second telescopic column 613, a first moving block 614, a third silica gel pad 615, a support frame 616, a rotating shaft 617, a rotating block 618, a third fixing column 619, a third telescopic column 620, a second moving block 621 and a fourth silica gel pad 622. The side surface of the support fixing frame 5 is provided with the clamp fixing frame 601, the side surface of the clamp fixing frame 601 is provided with the sliding rail 602, the side surface of the sliding rail 602 is provided with the sliding block 603, the side surface of the sliding block 603 is provided with the support plate 604, the side surface of the support plate 604 is provided with the first fixing column 605, the inside of the first fixing column 605 is provided with the first telescopic column 606, one end of the first telescopic column 606 is connected with the limiting piece 607, the side surface of the limiting piece 607 is provided with the first silica gel pad 608, the top of the limiting piece 607 is provided with the height fixing control piece 609, the lower end of the height fixing control piece 609 is connected with the height fixing plate 610, the surface of the height fixing plate 610 is provided with the second silica gel pad 611, the side surface of the clamp fixing frame 601 is connected with the second fixing column 612, the inside of the second fixing column 612 is provided with the second telescopic column 613, one end of the second telescopic column 613 is connected with the first moving block 614, the surface of the first moving block 614 is provided with the third silica gel pad 615, the upper side of the operation table 2 is provided with the support frame 616, the side surface of the support frame 616 is provided with the rotating shaft 617, the side surface of the rotating shaft 617 is provided with the rotating block 618, the side surface of the rotating block 618 is provided with the third fixing column 619, the inside of the third fixing column 619 is provided with the third telescopic column 620, one end of the third telescopic column 620 is connected with the second moving block 621, and the surface of the second moving block 621 is provided with the fourth silica gel pad 622. Through the setting of the positioning clamp mechanism 6, the positioning clamp mechanism 6 has adjustability in the use process, and can be widely applied to silk screen printing operations of printing objects with different sizes and shapes.

[0028] Further, the support plate 604 is in sliding connection with the clamp fixing frame 601 through the sliding block 603, the sliding block 603 and the sliding rail 602 are symmetrically arranged about the clamp fixing frame 601, two groups of limiting pieces 607 are arranged on the support plate 604, through the arrangement of the sliding block 603 and the limiting piece 607, during use, when the silk screen printing operation is performed on another part of the object surface, the two side support plates 604 are simultaneously moved on the clamp fixing frame 601, the control panel 7 is operated to control the overall position movement of the clamp, the high-precision control system of the device can realize the automatic adjustment of the silk screen printed object, which can avoid the error caused by manual adjustment, increase the positioning accuracy, improve the silk screen printing efficiency, and after the positioning is completed, the secondary silk screen printing operation can be performed.

[0029] Further, the first fixed column 605 is in welding connection with the support plate 604, the limiting piece 607 is in telescopic structure with the support plate 604 through the first telescopic column 606, the first silica gel pad 608 is in adhesive connection with the limiting piece 607, through the arrangement of the first telescopic column 606, during use, according to the shape of the printed object, the first telescopic column 606 pushes the limiting piece 607 to move inward, so that a plurality of limiting pieces 607 on the two sides respectively fix the object, according to the external modeling of the object, each limiting piece 607 is completely matched with the object, the side of the silk screen printed object is limited and fixed, the device is suitable for silk screen printing of objects with different sizes and shapes, expands the narrow application range of the clamp, the first silica gel pad 608 buffers and protects the object, and avoids abrasion of the silk screen printed object.

[0030] Further, the height fixing plate 610 is in lifting structure with the limiting piece 607 through the height fixing control piece 609, the second silica gel pad 611 is in adhesive connection with the height fixing plate 610, the height fixing plate 610 is arranged in one-to-one correspondence with the limiting piece 607, through the arrangement of the height fixing plate 610, during use, each group of height fixing control pieces 609 respectively pushes the height fixing plate 610 downward, the second silica gel pad 611 contacts the top surface of the silk screen printed object, and the top of the silk screen printed object is limited, so that the stability of the target object in the printing process is ensured.

[0031] Further, the first moving block 614 and the second fixed column 612 constitute a telescopic structure through the second telescopic column 613, the third silica gel pad 615 and the first moving block 614 are connected by adhesion, the rotating block 618 and the support frame 616 constitute a rotating structure through the rotating shaft 617, the second moving block 621 and the support frame 616 constitute a telescopic structure through the third telescopic column 620, the fourth silica gel pad 622 and the second moving block 621 are connected by adhesion, through the setting of the first moving block 614 and the second moving block 621, in the use process, the second telescopic column 613 pushes the second moving block 621 to be positioned on the inside of the object, the third telescopic column 620 pushes the second moving block 621 to be positioned on the outside of the object, the third silica gel pad 615 and the fourth silica gel pad 622 protect the outside without figure, the first moving block 614 and the second moving block 621 assist in fixing, the periphery limit improves the stability of the fixing, avoids the object deviation to affect the silk screen printing effect, and the rotating block 618 can be flexibly rotated by ninety degrees after use, so as to avoid the hindering of the rotating block 618 to the object taking.

[0032] Further, the ink knife fixing mechanism 9 includes a sliding seat 901, an ink knife displacement control seat 902, a support rod 903, a lifting rod 904, a fixed shell 905 and an ink knife 906, the inside of the track 8 is provided with the sliding seat 901, the bottom of the sliding seat 901 is connected with the ink knife displacement control seat 902, the bottom of the sliding seat 901 is connected with the ink knife displacement control seat 902, the inside of the ink knife displacement control seat 902 is provided with the support rod 903, the inside of the support rod 903 is provided with the lifting rod 904, the bottom of the lifting rod 904 is connected with the fixed shell 905, the bottom of the fixed shell 905 is connected with the ink knife 906, through the setting of the ink knife fixing mechanism 9, in the use process, the ink knife fixing mechanism 9 can automatically and accurately position the scraping position of the ink knife 906, and the effect of silk screen production is improved.

[0033] Further, the ink knife displacement control seat 902 and the support fixed frame 5 constitute a sliding connection through the sliding seat 901, the fixed shell 905 and the support rod 903 constitute a lifting structure through the lifting rod 904, through the setting of the lifting rod 904, in the use process, the lifting rod 904 is extended at the bottom of the support rod 903, the ink knife 906 is contacted with the silk screen, the sliding seat 901 of the ink knife displacement control seat 902 moves left and right on the track 8, so that the ink knife 906 scrapes the silk screen, so as to keep the silk screen pattern on the surface of the object.

[0034] Further, the fixed shell 905 is provided with two groups of ink knives 906, the lifting rod 904 is provided one by one with the fixed shell 905, the ink knife 906 and the fixed shell 905 constitute a rotating structure, through the setting of the fixed shell 905 and the ink knife 906, in the use process, the angle and pressure of the ink knife 906 are adjusted by operating the control panel 7, so that the uniform distribution and coverage of the ink on the screen, the two groups of ink knives 906 can be disassembled and replaced for a long time, which can prolong the service life of the device.

[0035] Working principle: first, the object to be printed is placed on the operating table 2, the control panel 7 is operated, the mechanical control lifting column 3 is moved upward to lift the object, which is convenient for overall fixation of the object, replaces manual fixation of the object, improves the safety of the equipment work, according to the shape of the printed object, the first telescopic column 606 pushes the limiting piece 607 to move inward, so that a plurality of limiting pieces 607 on both sides respectively fix the object, according to the external modeling of the object, so that each limiting piece 607 completely fits the object, the side of the silk screen printing object is fixed, the device is suitable for silk screen printing of objects with different sizes and shapes, expands the application range of the clamp, the first silica gel pad 608 buffers and protects the object, avoids wear and tear of the silk screen printing object, each height fixing control piece 609 respectively pushes the height fixing plate 610 downward, the second silica gel pad 611 contacts the top surface of the silk screen printing object, and the top of the silk screen printing object is limited, which can ensure the stability of the target object during printing, before silk screen printing operation, the second telescopic column 613 pushes the second moving block 621 to be positioned on the inner side of the object, the third telescopic column 620 pushes the second moving block 621 to be positioned on the outer side of the object, the third silica gel pad 615 and the fourth silica gel pad 622 protect the non-graphic outer side, the first moving block 614 and the second moving block 621 assist in fixation, the periphery of the limiting piece improves the stability of the fixation, avoids the object from deviating and affecting the silk screen printing effect, after use, the rotating block 618 can be flexibly rotated by 90 degrees, so as to avoid the rotating block 618 from hindering the taking of the object, the control panel 7 is operated, the angle and pressure of the squeegee 906 are adjusted, the uniform distribution and coverage of the ink on the silk screen are realized, the squeegee 906 is in contact with the silk screen through the extension of the lifting rod 904 at the bottom of the supporting rod 903, the sliding seat 901 of the squeegee displacement control seat 902 moves left and right on the track 8, so that the squeegee 906 scrapes the silk screen, so as to retain the silk screen printing pattern on the surface of the object, the squeegee fixing mechanism 9 can automatically and accurately position the scraping position of the squeegee 906, improve the effect of silk screen production, the two groups of squeegees 906 can be disassembled and replaced after long-term use, which can prolong the service life of the device, finally, when silk screen printing operation is performed on another part of the object surface, the two supporting plates 604 simultaneously move on the clamp fixing frame 601, the control panel 7 is operated to control the overall position movement of the clamp, the high-precision control system of the device can realize automatic adjustment of the silk screen printing object, which can avoid errors caused by manual adjustment, increase the accuracy of positioning, improve the silk screen printing efficiency, and the positioning is completed, and secondary silk screen printing operation can be performed, so that an improved high-precision positioning clamp applied to a silk screen printing machine is completed.

[0036] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An improved high-precision positioning fixture applied to a silk screen printing machine, comprising a machine body (1) and a positioning fixture mechanism (6), characterized in that: The top of the fuselage (1) is provided with an operation table (2), the inside of the operation table (2) is provided with a lifting column (3), the upper side of the lifting column (3) is connected with a support table (4), the side of the operation table (2) is provided with a support fixing frame (5), the side of the support fixing frame (5) is provided with a positioning clamp mechanism (6), the side of the fuselage (1) is provided with a control panel (7), the bottom of the support fixing frame (5) is provided with a track (8), and the bottom of the track (8) is provided with an ink knife fixing mechanism (9). The positioning clamp mechanism (6) comprises a clamp fixing frame (601), a sliding rail (602), a sliding block (603), a supporting plate (604), a first fixed column (605), a first telescopic column (606), a limiting piece (607), a first silica gel pad (608), a height fixing control piece (609), a height fixing plate (610), a second silica gel pad (611), a second fixed column (612), a second telescopic column (613), a first moving block (614), a third silica gel pad (615), a supporting frame (616), a rotating shaft (617), a rotating block (618), a third fixed column (619), a third telescopic column (620), a second moving block (621) and a fourth silica gel pad (622), the side surface of the supporting fixing frame (5) is provided with the clamp fixing frame (601), the side surface of the clamp fixing frame (601) is provided with the sliding rail (602), the side surface of the sliding rail (602) is provided with the sliding block (603), the side surface of the sliding block (603) is provided with the supporting plate (604), the side surface of the supporting plate (604) is provided with the first fixed column (605), the inside of the first fixed column (605) is provided with the first telescopic column (606), one end of the first telescopic column (606) is connected with the limiting piece (607), the side surface of the limiting piece (607) is provided with the first silica gel pad (608), the top of the limiting piece (607) is provided with the height fixing control piece (609), the lower end of the height fixing control piece (609) is connected with the height fixing plate (610), the surface of the height fixing plate (610) is provided with the second silica gel pad (611), the side surface of the clamp fixing frame (601) is connected with the second fixed column (612), the inside of the second fixed column (612) is provided with the second telescopic column (613), one end of the second telescopic column (613) is connected with the first moving block (614), the surface of the first moving block (614) is provided with the third silica gel pad (615), the upper side of the operation table (2) is provided with the supporting frame (616), the side surface of the supporting frame (616) is provided with the rotating shaft (617), the side surface of the rotating shaft (617) is provided with the rotating block (618), the side surface of the rotating block (618) is provided with the third fixed column (619), the inside of the third fixed column (619) is provided with the third telescopic column (620), one end of the third telescopic column (620) is connected with the second moving block (621), and the surface of the second moving block (621) is provided with the fourth silica gel pad (622). The ink knife fixing mechanism (9) includes a sliding seat (901), an ink knife displacement control seat (902), a support rod (903), a lifting rod (904), a fixed shell (905), and an ink knife (906). The sliding seat (901) is provided inside the track (8). The bottom of the sliding seat (901) is connected to the ink knife displacement control seat (902). The bottom of the sliding seat (901) is connected to the ink knife displacement control seat (902). The support rod (903) is provided inside the ink knife displacement control seat (902). The lifting rod (904) is provided inside the support rod (903). The bottom of the lifting rod (904) is connected to the fixed shell (905). The bottom of the fixed shell (905) is connected to the ink knife (906).

2. An improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein The lifting column (3) passes through the operating table (2), and the support platform (4) forms a lifting structure with the operating table (2) through the lifting column (3).

3. The improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein The support plate (604) is slidably connected to the fixture fixing frame (601) via a sliding block (603). The sliding block (603) and the slide rail (602) are symmetrically arranged about the left and right sides of the fixture fixing frame (601). Two sets of limiting members (607) are provided on the support plate (604).

4. The improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein The first fixing column (605) and the support plate (604) are welded together. The limiting member (607) forms a telescopic structure with the support plate (604) through the first telescopic column (606). The first silicone pad (608) and the limiting member (607) are adhesively connected.

5. The improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein The height fixing plate (610) forms a lifting structure through the height fixing control component (609) and the limiting component (607). The second silicone pad (611) is bonded to the height fixing plate (610). The height fixing plate (610) and the limiting component (607) are set in a one-to-one correspondence.

6. An improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein, The first movable block (614) forms a telescopic structure with the second telescopic column (613) and the second fixed column (612). The third silicone pad (615) is adhesively connected to the first movable block (614). The rotating block (618) forms a rotating structure with the support frame (616) through the rotating shaft (617). The second movable block (621) forms a telescopic structure with the support frame (616) through the third telescopic column (620). The fourth silicone pad (622) is adhesively connected to the second movable block (621).

7. The improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein The ink knife displacement control seat (902) is slidably connected to the support frame (5) via the sliding seat (901), and the fixed shell (905) is connected to the support rod (903) via the lifting rod (904) to form a lifting structure.

8. An improved high precision positioning fixture for use in a screen printing machine as claimed in claim 1, wherein, Two sets of fixed shells (905) and ink knives (906) are provided. The lifting rods (904) and fixed shells (905) are arranged in a one-to-one correspondence. The ink knives (906) and fixed shells (905) form a rotating structure.

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