Frame positioning structure of screen printing machine

Abstract

The utility model relates to the technical field of screen printing machines, in particular to a frame positioning structure of a screen printing machine, which comprises a bottom plate, a material containing screen frame arranged in the middle of the bottom plate, a front top frame assembly arranged at the front end of the bottom plate, a front top frame plate, a first driving motor arranged at the upper end of the front top frame plate, and a connecting plate arranged at the lower end of the first driving motor. Two supporting blocks are arranged on the connecting plate, a supporting plate is arranged at the lower ends of the supporting blocks, positioning screws are arranged at the lower ends of the supporting blocks, and pressing knobs are further arranged on the supporting blocks; a rear top frame assembly is arranged on the rear side of the bottom plate and comprises two sliding rails located on the bottom plate, a transverse plate is installed on the sliding rails in a sliding mode, a lower top frame plate is arranged at the lower end of the transverse plate, a second driving motor is arranged on the transverse plate, a connecting plate is arranged at the lower end of the second driving motor, two supporting blocks are arranged on the connecting plate, a supporting plate is arranged at the lower ends of the supporting blocks, and downward pressing rotary knobs are arranged on the supporting blocks. According to the device, the applicability of equipment can be improved while the printing precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of screen printing machines, in particular to a frame positioning structure of a screen printing machine. Background Art

[0002] A screen printer is a device that uses screen holes for printing. Its working principle is to press ink down through the screen through the screen holes, causing the screen to deform, thereby squeezing out the ink to form a print. Screen printers are widely used in printing various materials and products. Their high precision, high efficiency and high flexibility make them an indispensable printing equipment in the printing industry.

[0003] For example, a Chinese patent document with authorization publication number CN207549692U discloses an electric treadmill printer, which includes a frame with a drive assembly provided on the frame. The drive assembly is electrically connected to a control device and a battery assembly installed on the frame, and drives the electric treadmill printer to move to a printing position matching the printing workbench; the frame is also provided with a printing assembly that can move laterally, and a printing positioning assembly is provided at a position on the frame that matches the installation position of the printing assembly. The printing positioning assembly can receive a carrier plate loaded with silk-screen materials from the printing position and correct the position of the carrier plate, and cooperate with the printing assembly to complete precise printing; the electric treadmill printer uses a battery to power the movement and printing of the electric treadmill printer, and does not require a complex electrical structure. The power is stable, can improve printing efficiency and printed product quality, and has strong adaptability.

[0004] However, the above-mentioned treadmill printing machine also has certain defects: during use, the above-mentioned electric treadmill printing machine only limits the freedom of the carrier plate in the horizontal direction, so that the carrier plate still has room for movement in the vertical direction during printing, which in turn affects the overall printing quality; at the same time, the matching of the bracket spacing of the printing machine and the length of the carrier plate means that the printing machine can only use carrier plates of a certain size, and the applicability of the equipment is poor. Utility Model Content

[0005] The utility model provides a frame positioning structure for a screen printing machine to solve the technical problems of the existing treadmill printing machine, such as low printing accuracy due to the loading plate not completely restricting the degree of freedom, and poor equipment applicability due to the loading plate and the bracket being the same size.

[0006] In order to solve the above problems, the present invention provides a frame positioning structure of a screen printing machine adopting the following technical solutions:

[0007] A frame positioning structure for a screen printing machine includes a horizontally arranged bottom plate, the bottom plate including a left bottom plate and a right bottom plate, the left bottom plate and the right bottom plate extending in a front-to-back direction, reinforcement plates being provided on the front and rear sides of the left bottom plate and the right bottom plate, a material holding screen frame being provided at the lower end of the bottom plate, and further comprising:

[0008] The front top frame assembly includes a front top frame plate extending left and right and fixed between the left bottom plate and the right bottom plate, a driving motor 1 is provided at the upper end of the front top frame plate, a lead screw extending up and down is provided at the lower end of the driving motor, a nut is sleeved on the lead screw, a front reference block is sleeved on the outer side of the nut, a connecting plate extending left and right is provided at the rear end of the front reference block, two supporting blocks connected to the front top frame plate for vertical sliding are provided at the left and right ends of the connecting plate, a supporting plate is provided at the lower end of the supporting block, a positioning screw is provided at the lower end of the supporting block, and a pressing knob is also provided on the supporting block;

[0009] The rear top frame assembly includes two slide rails extending forward and backward on the left bottom plate and the right bottom plate, each of the slide rails is provided with a slider, a slider seat is provided at the upper end of the slider, and a clamp is provided on the front side of the slider seat; a horizontal plate is provided between the two slider seats, a lower top frame plate is provided at the lower end of the horizontal plate, a second drive motor is provided on the horizontal plate, a lead screw extending up and down is provided at the lower end of the second drive motor, a nut is provided on the lead screw, a rear reference block is provided on the outer side of the nut, a connecting plate extending left and right is provided on the front side of the rear reference block, two support blocks connected to the rear top frame plate for vertical sliding are provided at the left and right ends of the connecting plate, a support plate is provided at the lower end of the support block, and a push-down knob is provided on the support block.

[0010] Its beneficial effects are: by setting the slide rail, the rear top frame plate can move back and forth according to the size of the material holding screen frame, so that the equipment can be suitable for the installation of material holding screen frames of multiple sizes, thereby improving the applicability of the equipment; the setting of the support plate, the push-down knob and the positioning screw can limit the freedom of the material holding screen frame in all directions, avoiding the looseness of the material holding screen frame and affecting the printing accuracy of the equipment; the setting of the front reference block and the rear reference block improves the convenience of screen frame installation and positioning.

[0011] Furthermore, two positioning slide rails extending up and down are provided in parallel on the rear side of the front top frame plate and the front side of the rear top frame plate, and each positioning slide rail is provided with a slider. The two sliders on the front top frame plate are respectively fixedly connected to the two support blocks on the front side, and the two sliders on the rear top frame plate are respectively fixedly connected to the two support blocks on the rear side.

[0012] Furthermore, photoelectric switches are provided at the left end of the rear side of the front top frame plate and the left end of the front side of the rear top frame plate, and L-shaped sensing plates are provided on the corresponding photoelectric switches on the support block at the left end of the front connecting plate and the support block at the left end of the rear connecting plate to control the upper limit of the material holding mesh frame through photoelectric sensing.

[0013] Furthermore, lower limit plates are provided at the lower ends of the front top frame plate and the rear top frame plate corresponding to the positioning slide rails.

[0014] Furthermore, a reinforcing block extending left and right is provided between the two supporting blocks on the front side and between the two supporting blocks on the rear side; and two reinforcing ribs are provided between the transverse plate and the rear top frame plate.

[0015] The beneficial effect is that: the reinforcing rib arranged between the horizontal plate and the rear top frame plate can improve the strength of the horizontal plate, thereby avoiding affecting the printing precision caused by the deformation of the horizontal plate during the operation of the equipment.

[0016] Further, each of the supporting blocks is provided with an L-shaped connecting plate, and each of the pressing knobs is arranged on the corresponding L-shaped connecting plate in a threaded manner.

[0017] Further, the material containing net frame is a rectangular frame, and T-shaped positioning pieces are arranged at the front and rear ends of the rectangular frame.

[0018] Further, limit screws are arranged at the front ends of the sliding rails on the left bottom plate and the right bottom plate.

[0019] The frame positioning structure of the screen printing machine has the beneficial effects that:

[0020] 1. The rear top frame plate can move forward and backward according to the size of the material containing net frame by arranging the sliding rails, so that the equipment can be suitable for the installation of material containing net frames of different sizes, and the applicability of the equipment is improved.

[0021] 2. The reinforcing rib arranged between the horizontal plate and the rear top frame plate can improve the strength of the horizontal plate, thereby avoiding affecting the printing precision caused by the deformation of the horizontal plate during the operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 The structure diagram of the frame positioning structure of the screen printing machine provided by the present application is shown in the figure.

[0024] Figure 2 The structure diagram of the front top frame assembly is shown in the figure. Figure 1 Figure 1 ;

[0025] Figure 3 The structure diagram of the front top frame assembly is shown in the figure. Figure 1 Figure 2 ;

[0026] ​​ Figure 4 for Figure 1 The structure diagram of the rear top frame assembly shown Figure 1 ;

[0027] Figure 5 for Figure 1 The structure diagram of the rear top frame assembly shown Figure 2 .

[0028] Description of reference numerals:

[0029] 1. Bottom plate; 11. Left bottom plate; 12. Right bottom plate; 13. Reinforcement plate; 2. Material holding frame; 21. T-shaped positioning piece;

[0030] 3. Front top frame assembly; 31. Front top frame plate; 311. Positioning rail; 332. Slider; 333. Lower limit plate; 334. Photoelectric switch; 32. Drive motor 1; 33. Lead screw; 34. Nut; 35. Front reference block; 36. Connecting plate; 361. Support block; 362. L-shaped sensor plate; 363. L-shaped connecting plate; 364. Positioning screw; 365. Press-down knob; 37. Support plate; 38. Reinforcement block;

[0031] 4. Rear top frame assembly; 41. Slide rail; 411. Limit screw; 42. Clamp; 43. Slider seat; 44. Cross plate; 45. Drive motor 2; 46. Rear top frame plate; 461. Reinforcement rib; 47. Rear reference block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] The main idea of ​​the present utility model is to provide a slide rail 41 so that the rear top frame plate 46 can move back and forth according to the size of the material holding screen frame 2, thereby making the device suitable for the installation of material holding screen frames 2 of multiple sizes, thereby improving the applicability of the device; providing a support plate 37, a push-down knob 365 and a positioning screw 364 can limit the freedom of the material holding screen frame 2 in all directions, thereby avoiding affecting the printing accuracy of the equipment due to the loosening of the material holding screen frame 2; the provision of the front reference block 35 and the rear reference block 47 improves the convenience of screen frame installation and positioning.

[0034] After introducing the basic principles of the present invention, various non-limiting embodiments of the present invention are described in detail below. The numbers of any elements in the drawings are for illustration only and not for limitation, and any names are for distinction only and do not have any limiting meaning.

[0035] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0036] Embodiment 1 of a frame positioning structure of a screen printing machine provided by the present invention:

[0037] like Figures 1 to 5 As shown, the device includes a horizontally arranged base plate 1, which includes a left base plate 11 and a right base plate 12. It is defined that the left base plate 11 and the right base plate 12 extend in the front and rear directions, and two left and right extending reinforcing plates 13 are provided on the front and rear sides of the base plate 1. The reinforcing plates 13 are fixedly connected to the left and right base plates 11 and the right base plate 12. A rectangular material holding mesh frame 2 is provided at the lower end of the base plate 1 and located between the left base plate 11 and the right base plate 12. T-shaped positioning pieces 21 are provided at the front and rear ends of the material holding mesh frame 2. A front top frame assembly 3 is provided between the left base plate 11 and the right base plate 12, and a rear top frame assembly 4 is provided on the rear side of the front top frame assembly 3. The front top frame assembly 3 and the rear top frame assembly 4 are used to clamp the material holding mesh frame 2 and control its up and down movement.

[0038] First, let me introduce the front top frame assembly 3. The front top frame assembly 3 includes a front top frame plate 31 extending left and right, which is fixedly connected to the left bottom plate 11 and the right bottom plate 12 respectively. A driving motor 32 is provided on the front top frame plate 31, and a screw 33 extending up and down is provided at the lower end of the driving motor 32. A nut 34 is sleeved on the screw 33, and a front reference block 35 is sleeved on the outer side of the nut 34. The front reference block 35 is an L-shaped structure. A rectangular connecting plate 36 extending left and right is provided at the rear end of the front reference block 35. Two zigzag supporting blocks 361 extending up and down are provided at the left and right ends of the connecting plate 36. A rectangular reinforcing block 38 extending left and right is provided between the two supporting blocks 361. Two positioning slide rails 311 extending up and down are provided in parallel on the rear side of the front top frame plate 31. Both positioning slide rails 311 are provided with sliders 332. The two sliders 332 are fixedly connected to the supporting blocks 361 respectively, so that the supporting blocks 361 can move up and down along the positioning slide rails 311.

[0039] The lower ends of the two support blocks 361 are each provided with a support plate 37 extending forward and backward, and the support plate 37 is used to carry the material holding net frame 2. The front side of the lower end of the support block 361 is provided with a positioning screw 364 corresponding to the material holding net frame 2, and the positioning screw 364 is used to fix the material holding net frame 2 in the front and back and left and right directions; the front side of the support block 361 is also provided with an L-shaped connecting plate 363, and the L-shaped connecting plate 363 is provided with a downward-extending pressing knob 365, and the L-shaped connecting plate 363 is connected to the downward-extending pressing knob 365 by a threaded connection, and the downward-pressing knob 365 is used to cooperate with the support plate 37 to clamp the material holding net frame 2.

[0040] The rear top frame assembly 4 is introduced below. The rear top frame assembly 4 includes two slide rails 41 extending forward and backward and located at the left bottom plate 11 and the right bottom plate 12. The front ends of the two slide rails 41 are provided with limit screws 411 fixed to the bottom plate 1; the two slide rails 41 are provided with sliders 332, the upper ends of the sliders 332 are provided with rectangular slider seats 43, and the front sides of the two slider seats 43 are provided with clamps 42, which are used to fix the sliders 332 on the slide rails 41; a horizontal plate 44 extending left and right is provided between the two slider seats 43, and a lower top frame plate extending left and right is provided at the lower end of the horizontal plate 44, and two reinforcing ribs 461 are provided between the horizontal plate 44 and the lower top frame plate to prevent the horizontal plate 44 from deforming during the operation of the equipment.

[0041] The horizontal plate 44 is also provided with a second drive motor 45, and the lower end of the second drive motor 45 is provided with a screw 33 extending up and down, a nut 34 is sleeved on the screw 33, and an L-shaped rear reference block 47 is sleeved on the outer side of the nut 34. A connecting plate 36 extending left and right is provided on the front side of the rear reference block 47, and two supporting blocks 361 are provided at the left and right ends of the connecting plate 36. A rectangular reinforcement block 38 extending left and right is provided between the two supporting blocks 361. Two positioning slide rails 311 extending up and down are provided in parallel at the front end of the rear top frame plate 46. The two positioning slide rails 311 extend in parallel. 11 are both provided with sliders 332 at the front end, and the two sliders 332 are fixedly connected to the corresponding supporting blocks 361 respectively; the lower ends of the two supporting blocks 361 on the rear side are both provided with supporting plates 37 extending forward, and the supporting plates 37 are used to support the material holding net frame 2, and the rear ends of the two supporting blocks 361 on the rear side are both provided with L-shaped connecting plates 363, and the L-shaped connecting plates are provided with downward extending pressing knobs 365, and the L-shaped connecting plates are connected to the pressing knobs 365 by threads, and the pressing knobs 365 are used to cooperate with the supporting plates 37 to clamp the material holding net frame 2.

[0042] In addition, the lower end of each positioning slide rail 311 is horizontally provided with a lower limit plate 333, and the lower limit plate 333 is respectively fixed to the lower end of the front top frame plate 31 and the rear top frame plate 46; the left end of the rear side of the front top frame plate 31 and the left end of the front side of the rear top frame plate 46 are provided with a photoelectric switch 334, and the support block 361 at the left end of the front connecting plate 36 and the support block 361 at the left end of the rear connecting plate 36 are provided with an L-shaped sensing plate 362 corresponding to the photoelectric switch 334 to control the upper limit of the material holding mesh frame 2 by photoelectric sensing.

[0043] The working principle of the frame positioning structure is as follows: first, adjust the distance between the rear top frame assembly 4 and the front top frame assembly 3 according to the size of the material holding screen frame 2, and then place the material holding screen frame 2 on the four support plates 37 on the front and rear sides, align the T-shaped positioning pieces 21 on the front and rear sides of the material holding screen frame 2 with the front reference block 35 and the rear reference block 47 respectively, and then keep the position of the material holding screen frame 2 unchanged and lock each push-down knob 365 to fix the material holding screen frame 2 between the support plate 37 and the push-down knob 365, and then tighten the positioning screw 364 to further prevent the material holding screen frame 2 from being displaced during use, and then operate the clamp 42 to fix the rear top frame plate 46 on the slide rail 41. At this time, the drive motor 1 32 and the drive motor 2 45 can be started to perform printing operations.

[0044] Embodiment 2 of a frame positioning structure of a screen printing machine provided by the present invention:

[0045] The main difference between it and Example 1 is:

[0046] In Example 1, the upper travel limit of the material holding frame is achieved through the cooperation of the photoelectric switch and the L-shaped sensor plate.

[0047] In this embodiment, the upper travel limit of the material holding frame is achieved by providing an upper limit plate at the upper end of the repositioning slide rail.

[0048] Embodiment 3 of the frame positioning structure of a screen printing machine provided by the present invention:

[0049] The main difference between it and Example 1 is:

[0050] In Example 1, two reinforcing ribs are provided between the rear top frame plate and the transverse plate.

[0051] In this embodiment, four reinforcing ribs are provided between the rear roof frame plate and the transverse plate.

[0052] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0053] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A frame positioning structure for a screen printing machine, comprising a horizontally arranged bottom plate, the bottom plate comprising a left bottom plate and a right bottom plate, the left bottom plate and the right bottom plate extending in a front-to-back direction, reinforcement plates being provided on the front and rear sides of the left bottom plate and the right bottom plate, and a material holding screen frame being provided at the lower end of the bottom plate, characterized in that: Also includes: The front top frame assembly includes a front top frame plate extending left and right and fixed between the left bottom plate and the right bottom plate, a driving motor 1 is provided at the upper end of the front top frame plate, a lead screw extending up and down is provided at the lower end of the driving motor, a nut is sleeved on the lead screw, a front reference block is sleeved on the outer side of the nut, a connecting plate extending left and right is provided at the rear end of the front reference block, two supporting blocks connected to the front top frame plate for vertical sliding are provided at the left and right ends of the connecting plate, a supporting plate is provided at the lower end of the supporting block, a positioning screw is provided at the lower end of the supporting block, and a pressing knob is also provided on the supporting block; The rear top frame assembly includes two slide rails extending forward and backward on the left bottom plate and the right bottom plate, each of the slide rails is provided with a slider, a slider seat is provided at the upper end of the slider, and a clamp is provided on the front side of the slider seat; a horizontal plate is provided between the two slider seats, a lower top frame plate is provided at the lower end of the horizontal plate, a second drive motor is provided on the horizontal plate, a lead screw extending up and down is provided at the lower end of the second drive motor, a nut is provided on the lead screw, a rear reference block is provided on the outer side of the nut, a connecting plate extending left and right is provided on the front side of the rear reference block, two support blocks connected to the rear top frame plate for vertical sliding are provided at the left and right ends of the connecting plate, a support plate is provided at the lower end of the support block, and a push-down knob is provided on the support block.

2. The frame positioning structure of a screen printing machine according to claim 1, characterized in that: The rear side of the front top frame plate and the front side of the rear top frame plate are both provided with two positioning slide rails extending up and down in parallel, and each positioning slide rail is provided with a slider. The two sliders on the front top frame plate are respectively fixedly connected to the two supporting blocks on the front side, and the two sliders on the rear top frame plate are respectively fixedly connected to the two supporting blocks on the rear side.

3. The frame positioning structure of a screen printing machine according to claim 2, characterized in that: Photoelectric switches are provided at the left end of the rear side of the front top frame plate and the left end of the front side of the rear top frame plate, and L-shaped sensing plates are provided on the corresponding photoelectric switches on the supporting block at the left end of the front connecting plate and the supporting block at the left end of the rear connecting plate to control the upper limit of the material holding mesh frame through photoelectric sensing.

4. The frame positioning structure of a screen printing machine according to claim 3, characterized in that: The lower ends of the front top frame plate and the rear top frame plate are both provided with lower limit plates corresponding to the positioning slide rails.

5. The frame positioning structure of a screen printing machine according to claim 4, characterized in that: Reinforcement blocks extending left and right are provided between the two support blocks on the front side and between the two support blocks on the rear side; and two reinforcing ribs are provided between the transverse plate and the rear top frame plate.

6. The frame positioning structure of a screen printing machine according to claim 5, characterized in that: Each of the support blocks is provided with an L-shaped connecting plate, and each of the push-down knobs is threaded up and down on the corresponding L-shaped connecting plate.

7. The frame positioning structure of a screen printing machine according to claim 6, characterized in that: The material holding mesh frame is a rectangular frame with T-shaped positioning pieces at both the front and rear ends. The front reference block and the rear reference block are both L-shaped structures to cooperate with the T-shaped positioning pieces to position the material holding mesh frame.

8. The frame positioning structure of a screen printing machine according to claim 7, characterized in that: Limit screws are provided at the front ends of the slide rails on the left bottom plate and the right bottom plate.

Images