Ink filling structure for pad printing machine

Abstract

An ink filling structure for a pad printing machine. The ink filling structure includes: a substrate, on the upper side of which a pad printing steel plate is fixed, and the upper surface of the pad printing steel plate has a concave pattern; a movable seat, which can be slidably installed on the upper side of the substrate; an oil cup, which is installed on the movable seat and contacts the upper surface of the pad printing steel plate; a driving component, which has a motor, a first transmission member connected to the output shaft of the motor, and a second transmission member at opposite ends respectively connected to the first rotating member and the movable seat; wherein, the motor drives the first transmission member to rotate on a plane parallel to the pad printing steel plate, and during the rotation of the first transmission member, the second transmission member applies a force with a periodic change in direction and size to the movable seat so that the movable seat reciprocates on the upper side of the substrate. The moving speed of the oil cup of the ink filling structure is smoother and easier to control, which can ensure that the ink in the oil cup can evenly fill the concave pattern on the pad printing steel plate.

Description

Technical Field

[0001] The invention relates to the field of ink printing equipment, and in particular to an ink filling structure for a pad printing machine. Background Art

[0002] The working principle of the oil cup pad printing machine is as follows: the oil cup filled with ink makes a straight reciprocating movement on the surface of the pad printing steel plate, and the ink in the oil cup is filled into the concave pattern on the surface of the pad printing steel plate during the movement; then the pad printing rubber head moves vertically downward to pick up the ink filled into the concave pattern, and then moves horizontally to the top of the workpiece table where the printing workpiece is placed in advance, and then moves downward again to press the ink that adheres to the surface of the pad printing rubber head to form a concave pattern onto the surface of the printing workpiece, completing the pad printing process. The current problem is that in the existing oil cup pad printing machines, for example, a pad printing machine based on a multi-station interchangeable turntable machine disclosed in the utility model patent with application number CN201821077940.0, the oil cup rack structure it contains is directly connected to the piston rod of the cylinder, and the extension and retraction of the piston rod of the cylinder drives the oil cup rack structure to make a straight reciprocating movement. It should be noted that the extension and retraction of the cylinder's piston rod are almost instantaneous actions, which makes the oil cup move faster and more difficult to control on the surface of the pad printing steel plate, which can easily lead to the ink not being able to evenly fill the recessed pattern, especially when the recessed pattern is large, thus resulting in poor final printing effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an ink filling structure for a pad printing machine, wherein the moving speed of the ink cup is smoother and easier to control, thereby ensuring that the ink in the ink cup can evenly fill the concave pattern on the pad printing steel plate.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide an ink filling structure for a pad printing machine, the ink filling structure comprising: a substrate, a pad printing steel plate is fixed on the upper side, and the upper surface of the pad printing steel plate has a recessed pattern; a movable seat, which is slidably installed on the upper side of the substrate; an oil cup, which is installed on the movable seat and contacts with the upper surface of the pad printing steel plate; a driving assembly, comprising a motor, a first transmission member connected to the output shaft of the motor, and a second transmission member whose opposite ends are respectively rotatably connected to the first rotating member and the movable seat; wherein, the motor drives the first transmission member to rotate on a plane parallel to the pad printing steel plate, and during the rotation of the first transmission member, the second transmission member applies a force with a direction and a magnitude that periodically changes to the movable seat so that the movable seat moves back and forth on the upper side of the substrate.

[0005] The ink filling structure in the above technical solution no longer uses a cylinder to drive the oil cup to move back and forth on the surface of the pad printing steel plate, but uses a motor to drive the first transmission member to rotate on a plane parallel to the pad printing steel plate, and then during the rotation of the first transmission member, the second transmission member applies a force with a periodic change in direction and size to the moving seat to make the moving seat move back and forth on the upper side of the substrate, so that the movement process of the oil cup installed on the moving seat is smoother, which is conducive to the ink in the oil cup to evenly fill the entire concave pattern. In addition, the moving speed of the oil cup can be conveniently and effectively adjusted by controlling the speed of the motor.

[0006] As an improvement of the ink filling structure for a pad printing machine provided by the present invention, the first transmission member is a flat cylindrical turntable, and the second transmission member is a straight and long connecting rod; the central axis of the turntable coincides with the central axis of the output shaft of the motor, and the connection point between the connecting rod and the turntable deviates from the central axis of the turntable, and the connecting rod and the turntable are both parallel to the pad printing steel plate.

[0007] Through the above improvements, the output shaft of the motor applies a force with periodic changes in direction and size to the moving seat through a flat cylindrical turntable and a straight long connecting rod, so that the movement speed of the oil cup changes from the minimum (0m / s) to the maximum or from the maximum to the minimum more slowly, and not as quickly as driven by a cylinder, ensuring that the ink in the oil cup remains in a relatively calm state during the reciprocating movement of the oil cup, which is beneficial to reduce the volatilization of the ink.

[0008] As an improvement on the ink filling structure for a pad printing machine provided by the present invention, two mutually parallel guide rails are also laid on the upper side of the substrate and are respectively located on opposite sides of the pad printing steel plate; the movable seat includes at least two sliders and a crossbeam, the at least two sliders are respectively slidably installed on the two guide rails, and the crossbeams are respectively connected to the at least two sliders; the connecting rod is connected to the crossbeam; when the motor is started, the movable seat is driven to make reciprocating linear movements along the guide rails through the turntable and the connecting rod.

[0009] Through the above improvement, the connecting rod can apply a thrust or a pull to the entire moving seat through the crossbeam.

[0010] As an improvement of the ink filling structure for a pad printing machine provided by the present invention, the distances from the connection point between the connecting rod and the crossbeam to the two guide rails are equal.

[0011] Through the above improvement, it is ensured that the connecting rod can drive the moving seat to complete a round trip every time the turntable rotates 360°, and the length of the connecting rod can be fully utilized, which is also conducive to the stability of the overall structure.

[0012] As an improvement of the ink filling structure for a pad printer provided by the present invention, the motor is installed on the lower side of the substrate, the turntable is located on the upper side of the substrate, and the output shaft of the motor passes through the substrate and is connected to the turntable via a coupling.

[0013] Through the above improvement, the motor and the turntable are arranged on both sides of the substrate, and the motor is arranged on the lower side with fewer parts, which is beneficial to the installation and maintenance of the entire ink filling structure.

[0014] As an improvement on the ink filling structure for a pad printing machine provided by the present invention, the movable seat includes four sliders, and the four sliders are respectively installed on the two guide rails in groups of two; the movable seat also includes two spaced-apart and parallel bottom plates, each of the bottom plates is simultaneously connected to the two sliders arranged on the same guide rail, and the two ends of the crossbeam are respectively connected and fixed to the two bottom plates.

[0015] Through the above improvements, it is ensured that the reciprocating movement of the movable seat under the push of the connecting rod is smooth and stable, and good contact between the oil cup and the pad printing steel plate is ensured during the entire reciprocating movement.

[0016] As an improvement of the ink filling structure for the pad printing machine provided by the present invention, the movable seat also includes a fixed frame, which is respectively connected to the two base plates, and the oil cup is installed in the fixed frame, and the lower surface of the oil cup is in parallel contact with the upper surface of the pad printing steel plate.

[0017] As an improvement of the ink filling structure for a pad printing machine provided by the present invention, the connecting rod includes a first section, a third section and a second section connected between the first section and the third section, one end of the first section is rotatably connected to the turntable, and the other end is threadedly connected to one end of the second section, one end of the third section is rotatably connected to the crossbeam, and the other end is threadedly connected to the other end of the second section.

[0018] Through the above improvement, the length of the connecting rod can be adjusted by only replacing the second section, that is, the formation of the oil cup can be adjusted to adapt to the pad printing steel plates with different concave patterns.

[0019] The ink filling structure for pad printing provided by the present invention can at least achieve the following beneficial effects: by adopting the ink filling structure provided by this embodiment, the oil cup is no longer driven by a cylinder to reciprocate on the surface of the pad printing steel plate, but the first transmission member is driven by a motor to rotate on a plane parallel to the pad printing steel plate, and then during the rotation of the first transmission member, the second transmission member applies a force with a periodic change in direction and size to the moving seat to make the moving seat reciprocate on the upper side of the substrate, so that the movement process of the oil cup installed on the moving seat is smoother, which is conducive to the ink in the oil cup to evenly fill the entire concave pattern. In addition, the moving speed of the oil cup can be conveniently and effectively adjusted by controlling the speed of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a top view of an ink filling structure provided in an embodiment of the present invention;

[0021] Figure 2 This is a front view structural schematic diagram of the ink filling structure provided in an embodiment of the present invention.

[0022] Description of the accompanying drawings in the specific implementation manner:

[0023] substrate 1 Mobile seat 2 Oil Cup 3 Pad printing steel plate 11 Fixed seat 12 guide 13 slider 21 beam 22 Base Plate 23 Fixed bracket 24 Electric Motor 41 Couplings 42 Turntable 43 link 44 Paragraph 1 441 Paragraph 2 442 Paragraph 3 443 DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] This embodiment provides an ink filling structure for a pad printing machine, which is particularly suitable for an oil cup 3 type pad printing machine. The movement speed of the oil cup 3 is smoother and easier to control, ensuring that the ink in the oil cup 3 can evenly fill the concave pattern on the pad printing steel plate 11.

[0026] The ink filling structure includes a substrate 1, a movable seat 2, an oil cup 3 and a driving assembly. A pad printing steel plate 11 is fixed on the upper side of the substrate 1, and the upper surface of the pad printing steel plate 11 has a concave pattern. The movable seat 2 is slidably installed on the upper side of the substrate 1. The oil cup 3 is installed on the movable seat 2 and contacts the upper surface of the pad printing steel plate 11. The driving assembly has a motor 41, a first transmission member connected to the output shaft of the motor 41, and a second transmission member rotatably connected to the first rotating member and the movable seat 2 at opposite ends. When the motor 41 is started, it can drive the first transmission member to rotate on a plane parallel to the pad printing steel plate 11. During the rotation of the first transmission member, the second transmission member applies a force with a direction and size periodically changing to the movable seat 2 so that the movable seat 2 moves back and forth on the upper side of the substrate 1.

[0027] In this embodiment, the substrate 1 is a rectangular plate-shaped structure made of stainless steel material, which has an upper surface and a lower surface relative to each other. A fixing seat 12 is installed on the upper surface of the right end of the substrate 1, and the pad printing steel plate 11 is fixed on the upper side of the fixing seat 12, and the pad printing steel plate 11 is kept parallel to the substrate 1. The upper surface of the substrate 1 is also paved with two mutually parallel guide rails 13 respectively located on opposite sides of the pad printing steel plate 11, and the two guide rails 13 are symmetrically distributed on both sides of the pad printing steel plate 11, and the extension direction of the guide rails 13 is consistent with the extension direction of the pad printing steel plate 11.

[0028] In this embodiment, the movable seat 2 includes at least two sliders 21 and a crossbeam 22. The at least two sliders 21 are slidably mounted on the two guide rails 13, respectively, and the crossbeam 22 is connected to the at least two sliders 21, respectively; the connecting rod 44 is connected to the crossbeam 22; when the motor 41 is started, the movable seat 2 is driven to move back and forth along the guide rails 13 through the turntable 43 and the connecting rod 44. Specifically, the movable seat 2 includes four sliders 21, and the four sliders 21 are respectively mounted on the two guide rails 13 in groups of two; the movable seat 2 also includes two spaced and parallel bottom plates 23, each of which is simultaneously connected to the two sliders 21 arranged on the same guide rail 13, and the two ends of the crossbeam 22 are respectively connected and fixed to the left ends of the two bottom plates 23. In addition, the movable seat 2 also includes a fixing frame 24, which is respectively connected to the right ends of the two bottom plates 23, and the oil cup 3 is installed in the fixing frame 24, and the lower surface of the oil cup 3 is in parallel contact with the upper surface of the pad printing steel plate 11.

[0029] In this embodiment, the motor 41 is installed on the lower side of the substrate 1, and the turntable 43 is located on the upper side of the substrate 1. The output shaft of the motor 41 passes through the substrate 1 and is connected to the turntable 43 through the coupling 42. The first transmission member is a flat cylindrical turntable 43, and the second transmission member is a straight and long connecting rod 44; the central axis of the turntable 43 coincides with the central axis of the output shaft of the motor 41. The connection point between the connecting rod 44 and the turntable 43 deviates from the central axis of the turntable 43. The connection point between the connecting rod 44 and the crossbeam 22 is equidistant from the two guide rails 13. Specifically, the crossbeam 22 is an axisymmetric structure, and the connecting rod 44 is connected to the symmetry axis of the crossbeam 22. The connecting rod 44 and the turntable 43 are both parallel to the pad printing steel plate 11.

[0030] Thus, when the turntable 43 rotates under the drive of the motor 41 , the connecting rod 44 can drive the moving base 2 to complete a round trip every time the turntable 43 rotates 360°.

[0031] In summary, the ink filling structure provided in this embodiment has the following beneficial effects:

[0032] 1. By adopting the ink filling structure provided in this embodiment, the oil cup 3 is no longer driven by a cylinder to reciprocate on the surface of the pad printing steel plate 11, but the motor 41 is used to drive the first transmission member to rotate on a plane parallel to the pad printing steel plate 11, and then during the rotation of the first transmission member, the second transmission member applies a force with a periodic change in direction and size to the moving seat 2 to make the moving seat 2 reciprocate on the upper side of the substrate 1, so that the movement process of the oil cup 3 installed on the moving seat 2 is smoother, which is conducive to the ink in the oil cup 3 to evenly fill the entire concave pattern. In addition, the moving speed of the oil cup 3 can be conveniently and effectively adjusted by controlling the rotation speed of the motor 41.

[0033] 2. The output shaft of the motor 41 applies a force of periodically changing direction and magnitude to the movable seat 2 through a flat cylindrical turntable 43 and a straight long connecting rod 44, so that the moving speed of the oil cup 3 changes from the minimum (0 m / s) to the maximum or from the maximum to the minimum more slowly, and not as quickly as when driven by a cylinder, thereby ensuring that the ink in the oil cup 3 remains in a relatively calm state during the reciprocating movement of the oil cup 3, which is beneficial to reducing the volatilization of the ink.

[0034] 3. The motor 41 and the turntable 43 are disposed on both sides of the substrate 1, and the motor 41 is disposed on the lower side where there are fewer parts, which is beneficial to the installation and maintenance of the entire ink filling structure.

[0035] 4. The movable seat 2 is connected to the two tracks through the two bottom plates 23 and the four sliders 21, which can ensure that the movable seat 2 moves back and forth smoothly under the push of the connecting rod 44, and ensure good contact between the oil cup 3 and the pad printing steel plate 11 during the entire reciprocating movement.

[0036] 5. The distances from the connection point between the connecting rod 44 and the crossbeam 22 to the two guide rails 13 are equal, so that the length of the connecting rod 44 is fully utilized, which is also conducive to the stability of the overall structure.

[0037] Further, the connecting rod 44 includes a first section 441, a third section 443, and a second section 442 connected between the first section 441 and the third section 443. One end of the first section 441 is rotatably connected to the rotating disk 43, and the other end is threadedly connected to one end of the second section 442. One end of the third section 443 is rotatably connected to the crossbeam 22, and the other end is threadedly connected to the other end of the second section 442. Specifically, the other end of the first section 441 and the other end of the third section 443 are both cavities with internal threads, and the opposite ends of the second section 442 are both provided with external threads. The opposite ends of the second section 442 are respectively screwed into the other end of the first section 441 and the other end of the third section 443 through threaded matching. Through the above design, the length of the connecting rod 44 can be adjusted by simply replacing the second section 442, that is, the formation of the oil cup 3 can be adjusted to adapt to the pad printing steel plate 11 with different concave patterns.

[0038] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. An ink filling structure for a pad printer, characterized in that: The ink filling structure comprises: A substrate, on the upper side of which a pad printing steel plate is fixed, wherein the upper surface of the pad printing steel plate has a concave pattern; A movable seat, slidably mounted on the upper side of the base plate; An oil cup is mounted on the movable seat and contacts the upper surface of the pad printing steel plate; A driving assembly comprising a motor, a first transmission member connected to an output shaft of the motor, and a second transmission member having opposite ends respectively connected to the first transmission member and the moving seat for rotation; The motor drives the first transmission member to rotate on a plane parallel to the pad printing steel plate, and during the rotation of the first transmission member, the second transmission member applies a force with a periodic change in direction and magnitude to the moving seat so that the moving seat reciprocates on the upper side of the substrate; The first transmission member is a flat cylindrical rotating disk, and the second transmission member is a straight and long connecting rod; The central axis of the turntable coincides with the central axis of the output shaft of the motor, the connection point between the connecting rod and the turntable deviates from the central axis of the turntable, and the connecting rod and the turntable are parallel to the pad printing steel plate; The upper side of the substrate is also provided with two mutually parallel guide rails respectively located on opposite sides of the pad printing steel plate; the movable seat comprises at least two sliders and a crossbeam, the at least two sliders are respectively slidably mounted on the two guide rails, the crossbeams are respectively connected to the at least two sliders; the connecting rod is connected to the crossbeam; when the motor is started, the movable seat is driven to move back and forth linearly along the guide rails through the turntable and the connecting rod; The connecting rod comprises a first section, a third section and a second section connected between the first section and the third section, one end of the first section is rotatably connected to the turntable, and the other end is threadedly connected to one end of the second section, one end of the third section is rotatably connected to the crossbeam, and the other end is threadedly connected to the other end of the second section; The distances from the connection point between the connecting rod and the crossbeam to the two guide rails are equal; The motor is mounted on the lower side of the base plate, the turntable is located on the upper side of the base plate, and the output shaft of the motor passes through the base plate and is connected to the turntable via a coupling; The movable seat includes four sliders, which are respectively installed on the two guide rails in groups of two; the movable seat also includes two spaced-apart and parallel base plates, each of which is simultaneously connected to two sliders arranged on the same guide rail, and the two ends of the crossbeam are respectively connected and fixed to the two base plates.

2. The ink filling structure for a pad printer according to claim 1, characterized in that: The movable seat also includes a fixing frame, which is respectively connected to the two bottom plates. The oil cup is installed in the fixing frame, and the lower surface of the oil cup is in parallel contact with the upper surface of the pad printing steel plate.

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