Turnover device and method for screen printing of ceramic resistor element

Abstract

The invention discloses a turn-over device and method for ceramic resistor element silk-screen printing. The device comprises a jig used for loading a ceramic resistor element, a conveying mechanism used for conveying the jig and a turn-over mechanism used for turning over the ceramic resistor element. A plurality of placing grooves are formed in the jig; the overturning mechanism comprises an overturning frame, an overturning driving mechanism, a vertical driving mechanism and grabbing assemblies used for grabbing the jig, the number of the grabbing assemblies is two, the grabbing assemblies are oppositely arranged on the overturning frame, and each grabbing assembly comprises a grabbing piece and a grabbing driving piece used for driving the grabbing piece to be close to or away from the jig; when a jig loaded with a ceramic resistor element to be turned over is conveyed to a grabbing station, the two sets of grabbing assemblies are located above and below the jig respectively, and the upper grabbing assembly grabs a no-load jig with a downward containing groove. The turning-over device can automatically complete turning-over work of a large batch of ceramic resistor elements, saves time and labor, and is beneficial to improving the printing efficiency.

Description

Technical Field

[0001] The invention relates to screen printing technology, and in particular to a flipping device and method for screen printing of ceramic resistor elements. Background Art

[0002] Screen printing belongs to the orifice printing of the four major printing techniques (letterpress printing, gravure printing, lithography, orifice printing). The mesh holes of the image part can pass the ink and leak onto the substrate, while the rest of the printing plate is blocked and cannot pass the ink, forming a blank on the substrate. Screen printing is to weave silk, synthetic fiber or metal wire into a mesh, stretch it tightly on the screen frame, and use manual film engraving or photochemical plate making methods to make a screen. Only the image part on the screen can pass the ink, while the mesh holes of the non-image part are all blocked and cannot pass the ink.

[0003] Printing materials are very extensive and are used in various industrial fields, such as paper printing, plastic printing, wood product printing, metal product printing, glass ceramic product printing, sign printing, circuit board printing, etc. In the printing process of ceramic resistor elements, for ceramic resistor elements that need double-sided printing, after printing one side, the ceramic resistor element needs to be flipped 180°, with the other side facing up, and then printed. However, in the existing printing work, a large number of ceramic resistor elements need to be turned over manually, which is time-consuming and labor-intensive, and has low work efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems and provide a flipping device for screen printing of ceramic resistor elements, which can automatically complete the flipping work of a large number of ceramic resistor elements, saving time and labor and helping to improve printing efficiency.

[0005] Another object of the present invention is to provide a flipping method for screen printing of ceramic resistor elements.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A flipping device for screen printing of ceramic resistor elements, comprising a jig for loading the ceramic resistor elements, a conveying mechanism for conveying the jig, and a turning mechanism for flipping the ceramic resistor elements;

[0008] The jig is provided with a plurality of placement slots;

[0009] The flipping mechanism includes a flipping frame, a flipping drive mechanism for driving the flipping frame to rotate, a vertical drive mechanism for driving the flipping frame to move vertically, and a grabbing assembly for grabbing the jig. The grabbing assembly is provided with two groups and is relatively arranged on the flipping frame. Each group of grabbing assemblies includes a grabbing member and a grabbing drive member for driving the grabbing member to approach or move away from the jig. When a jig loaded with multiple ceramic resistor elements to be flipped is transported to the grabbing station, the two groups of grabbing assemblies are respectively located above and below the jig, and the grabbing assembly located above grabs an empty jig with a placement slot facing downward.

[0010] In a preferred embodiment of the present invention, each group of grabbing components further includes a grabbing mounting plate, a plurality of grabbing members are provided and are all fixedly mounted on the grabbing mounting plate, and the grabbing driving member is dynamically connected to the grabbing mounting plate.

[0011] Furthermore, the grabbing driving member is a cylinder, a cylinder body of the cylinder is fixed on the turning frame, and a telescopic rod of the cylinder is connected to the grabbing mounting plate.

[0012] Furthermore, a guide structure is provided between the grabbing mounting plate and the turning frame.

[0013] Furthermore, the grabbing member is a suction cup connected to the negative pressure device.

[0014] In a preferred embodiment of the present invention, the flip drive mechanism includes a flip drive motor and a flip transmission assembly, the flip transmission assembly includes a flip transmission belt and a flip transmission pulley, two flip transmission pulleys are provided, the two flip transmission pulleys are respectively connected to the output shaft of the flip drive motor and the flip frame, the flip transmission belt is connected to the two flip transmission pulleys, and the flip frame is rotatably connected to the support. Through the above structure, under the drive of the flip drive motor, the flip frame can rotate with the grabbing assembly, thereby completing the flipping of the fixture.

[0015] Furthermore, the vertical driving mechanism includes a vertical moving plate and a vertical driving cylinder, the telescopic rod of the vertical driving cylinder is fixedly connected to the vertical moving plate, and the support is fixedly arranged on the vertical moving plate. Through the above structure, under the drive of the vertical driving motor, the flip frame can move vertically with the grabbing assembly, thereby avoiding the conveying mechanism and preventing collision during flipping.

[0016] A preferred solution of the present invention, wherein the conveying mechanism includes a conveying guide rail, a conveyor belt and a conveying drive mechanism, wherein the conveying guide rail is provided with two and arranged along a direction perpendicular to the conveying direction of the jig; the vertical drive mechanism is arranged on one side of the two conveying guide rails, wherein the conveying guide rail closer to the vertical drive mechanism is provided with a notch for avoiding the flipping frame; the conveyor belt is provided with two groups and arranged along a direction perpendicular to the conveying direction of the jig, and a group of conveyor belts corresponding to the conveying guide rail closer to the vertical drive mechanism is provided with two conveyor belts, and the two conveyor belts are located at both ends of the notch. Through the above structure, before flipping, the flipping frame is driven downward by the vertical drive mechanism, and the flipping frame stays at the grabbing station (corresponding to the position of the notch) after passing through the notch; the conveyor belt is driven by the conveying drive mechanism to move the jig forward until it stops above the jig moving notch, at which time the two groups of grabbing components are respectively located above and below the jig, and then the flipping operation begins.

[0017] A flipping method for screen printing of ceramic resistor elements, comprising the following steps:

[0018] The jig with the ceramic resistor element with one side printed is placed on the conveying mechanism, and the conveying mechanism conveys the jig toward the flipping mechanism, at which time the printed side of the ceramic resistor element faces upward;

[0019] When the jig with the ceramic resistor element printed on one side is transported to the grabbing station, the two groups of grabbing components are respectively located at the upper and lower parts of the jig, and the grabbing component located at the upper part grabs the unloaded jig with the placement slot facing downwards;

[0020] The grab driving member of the grab assembly located at the bottom drives the grab member to approach upward and grab the jig equipped with the ceramic resistor element with one side printed, and the grab driving member of the grab assembly located at the top drives the grab member to move downward, so that the unloaded jig with the placement slot facing downward is covered on the jig equipped with the ceramic resistor element with one side printed, and at this time, the positions of the multiple placement slots of the jig located at the top correspond to the positions of the multiple ceramic resistor elements in the jig located at the bottom.

[0021] The turning frame is driven upward by the vertical driving mechanism to move the two jigs away from the conveying mechanism;

[0022] The flip drive mechanism drives the flip frame to flip 180 degrees, so that the originally unloaded fixture turns to the bottom and takes over the ceramic resistor element. At this time, the printed surface of the ceramic resistor element faces downward, and the fixture originally loaded with the ceramic resistor element is located at the top and is in an inverted unloaded state, ready to receive the next set of flipped ceramic resistor elements;

[0023] The flip frame is driven downward by the vertical driving mechanism, and the jig loaded with the ceramic resistor element is placed on the conveying mechanism, which then continues to convey it downward;

[0024] According to the above operation, the ceramic resistance element is turned over continuously.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The flipping device of the present invention is provided with two groups of grabbing components. First, the upper unloaded jig is covered on the lower jig equipped with ceramic resistor elements, and then flipped 180 degrees to transfer the ceramic resistor elements between the two jigs. The flipping operation of a large number of ceramic resistor elements can be completed simultaneously, which saves time and labor and is conducive to improving printing efficiency.

[0027] 2. The ceramic resistor element is directly turned over and transferred between the two fixtures without setting up a transfer mechanism or other structures. The structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the flipping device for screen printing of ceramic resistor elements of the present invention.

[0029] Figure 2 It is a three-dimensional structural schematic diagram of the turning mechanism of the present invention.

[0030] Figure 3 It is a side view of the turning mechanism of the present invention.

[0031] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the conveying mechanism of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0033] See also Figure 1-3 The flipping device for screen printing of ceramic resistor elements of this embodiment comprises a jig 2 for loading ceramic resistor elements 1, a conveying mechanism for conveying the jig 2 and a flipping mechanism for flipping the ceramic resistor elements 1; the jig 2 is provided with a plurality of placement slots; the flipping mechanism comprises a flipping frame 3, a flipping driving mechanism for driving the flipping frame 3 to rotate, a vertical driving mechanism for driving the flipping frame 3 to move vertically and a grabbing assembly for grabbing the jig 2, the grabbing assembly is provided with two groups and is relatively arranged on the flipping frame 3, each group of grabbing assemblies comprises a grabbing member 4 and a grabbing driving member 5 for driving the grabbing member 4 to approach or move away from the jig 2; when the jig 2 loaded with a plurality of ceramic resistor elements 1 to be flipped is conveyed to the grabbing station, the two groups of grabbing assemblies are respectively located above and below the jig 2, and the grabbing assembly located above grabs an empty jig 2 with the placement slot facing downward.

[0034] See also Figure 1-3 Each group of grabbing components also includes a grabbing mounting plate 6, a plurality of grabbing members 4 are provided and are fixedly arranged on the grabbing mounting plate 6, and the grabbing driving member 5 is dynamically connected to the grabbing mounting plate 6.

[0035] Furthermore, the grabbing driving member 5 is a cylinder, a cylinder body of the cylinder is fixed on the turning frame 3 , and a telescopic rod of the cylinder is connected to the grabbing mounting plate 6 .

[0036] Furthermore, a guide structure is provided between the grabbing mounting plate 6 and the turning frame 3 .

[0037] Furthermore, the grabbing member 4 is a suction cup connected to the negative pressure device.

[0038] See also Figure 1-3 The flip drive mechanism includes a flip drive motor 7 and a flip transmission assembly, the flip transmission assembly includes a flip transmission belt and a flip transmission pulley, two flip transmission pulleys are provided, the two flip transmission pulleys are respectively connected to the output shaft of the flip drive motor 7 and the flip frame 3, the flip transmission belt is connected to the two flip transmission pulleys, and the flip frame 3 is rotatably connected to the support 8. Through the above structure, under the drive of the flip drive motor 7, the flip frame 3 can rotate with the grabbing assembly, thereby completing the flipping work of the fixture 2.

[0039] Furthermore, the vertical driving mechanism includes a vertical moving plate 9 and a vertical driving cylinder 10, the telescopic rod of the vertical driving cylinder 10 is fixedly connected to the vertical moving plate 9, and the support 8 is fixedly arranged on the vertical moving plate 9. Through the above structure, under the drive of the vertical driving motor, the turning frame 3 can move vertically with the grabbing assembly, thereby avoiding the conveying mechanism and preventing collision during turning.

[0040] See also Figure 4The conveying mechanism includes a conveying guide rail 11, a conveying belt 12 and a conveying driving mechanism. The conveying guide rail 11 is provided with two and is arranged along a direction perpendicular to the conveying direction of the jig 2; the vertical driving mechanism is arranged on one side of the two conveying guide rails 11, wherein the conveying guide rail 11 closer to the vertical driving mechanism is provided with a gap 11-1 for avoiding the flip frame 3; the conveying belt 12 is provided with two groups and is arranged along a direction perpendicular to the conveying direction of the jig 2, and a group of conveying belts 12 corresponding to the conveying guide rail 11 closer to the vertical driving mechanism is provided with two conveying belts 12, and the two conveying belts 12 are located at both ends of the gap 11-1. Through the above structure, before flipping, the flip frame 3 is driven downward by the vertical drive mechanism, and the flip frame 3 stops at the grabbing station (corresponding to the position of the gap 11-1) after passing through the gap 11-1; the conveyor belt 12 is driven by the conveying drive mechanism to move the jig 2 forward until the jig 2 stops above the moving gap 11-1. At this time, the two groups of grabbing components are respectively located above and below the jig 2, and then the flipping operation begins.

[0041] See also Figure 1-4 The flipping method for screen printing of ceramic resistor elements of this embodiment includes the following steps:

[0042] The jig 2 with the ceramic resistor element 1 having one side printed thereon is placed on the conveying mechanism, and the conveying mechanism conveys the jig 2 toward the flipping mechanism, with the printed side of the ceramic resistor element 1 facing upward.

[0043] When the jig 2 with the ceramic resistor element 1 printed on one side is transported to the grabbing station, the two grabbing components are respectively located above and below the jig 2. The grabbing component located above grabs the unloaded jig 2 with the placement slot facing downwards. Figure 3 .

[0044] The grabbing driving member 5 of the grabbing assembly located at the bottom drives the grabbing member 4 to approach upward and grab the jig 2 with the ceramic resistor element 1 printed on one side. The grabbing driving member 5 of the grabbing assembly located at the top drives the grabbing member 4 to move downward, so that the unloaded jig 2 with the placement slot facing downward is covered on the jig 2 with the ceramic resistor element 1 printed on one side. At this time, the positions of the multiple placement slots of the jig 2 located at the top correspond one by one to the positions of the multiple ceramic resistor elements 1 in the jig 2 located at the bottom.

[0045] The turning frame 3 is driven upward by the vertical driving mechanism to pass through the gap 11 - 1 to avoid the conveying mechanism, so that the two fixtures 2 are away from the conveying mechanism to prevent interference.

[0046] The flipping frame 3 is driven to flip 180 degrees through the flipping drive mechanism, so that the originally unloaded fixture 2 turns to the bottom and takes over the ceramic resistor element 1. At this time, the printed surface of the ceramic resistor element 1 faces downward, and the fixture 2 originally loaded with the ceramic resistor element 1 is located at the top and is in an inverted unloaded state, ready to receive the next group of flipped ceramic resistor elements 1.

[0047] The vertical drive mechanism drives the flip frame 3 to move downward, passes through the gap 11-1 and avoids the conveying mechanism, and the jig 2 loaded with the ceramic resistor element 1 is placed on the conveying mechanism, and the conveying mechanism continues to convey it downward. According to the above operation, the flipping operation of the ceramic resistor element 1 is continuously completed.

[0048] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A flipping device for screen printing of ceramic resistor elements, characterized in that: It includes a jig for loading ceramic resistor elements, a conveying mechanism for conveying the jig, and a flipping mechanism for turning over the ceramic resistor elements; The jig is provided with a plurality of placement slots; The flipping mechanism includes a flipping frame, a flipping drive mechanism for driving the flipping frame to rotate, a vertical drive mechanism for driving the flipping frame to move vertically, and a grabbing assembly for grabbing the jig. The grabbing assembly is provided with two groups and is relatively arranged on the flipping frame. Each group of grabbing assemblies includes a grabbing member and a grabbing drive member for driving the grabbing member to approach or move away from the jig. When a jig loaded with multiple ceramic resistor elements to be flipped is transported to the grabbing station, the two groups of grabbing assemblies are respectively located above and below the jig, and the grabbing assembly located above grabs an empty jig with a placement slot facing downward.

2. The flipping device for screen printing of ceramic resistor elements according to claim 1, characterized in that: Each group of grabbing components also includes a grabbing mounting plate, a plurality of grabbing members are provided and are all fixedly arranged on the grabbing mounting plate, and the grabbing driving member is dynamically connected to the grabbing mounting plate.

3. The flipping device for screen printing of ceramic resistor elements according to claim 2, characterized in that: The grabbing driving member is a cylinder, a cylinder body of the cylinder is fixed on the turning frame, and a telescopic rod of the cylinder is connected to the grabbing mounting plate.

4. The flipping device for screen printing of ceramic resistor elements according to claim 2, characterized in that: A guide structure is provided between the grabbing and mounting plate and the turning frame.

5. The flipping device for screen printing of ceramic resistor elements according to claim 2, characterized in that: The grabbing member is a suction cup connected to the negative pressure device.

6. The flipping device for screen printing of ceramic resistor elements according to claim 1, characterized in that: The flip driving mechanism includes a flip driving motor and a flip transmission assembly, the flip transmission assembly includes a flip transmission belt and a flip transmission pulley, two flip transmission pulleys are provided, the two flip transmission pulleys are respectively connected to the output shaft of the flip driving motor and the flip frame, the flip transmission belt is connected to the two flip transmission pulleys, and the flip frame is rotatably connected to the support.

7. The flipping device for screen printing of ceramic resistor elements according to claim 1, characterized in that: The vertical driving mechanism comprises a vertical moving plate and a vertical driving cylinder, the telescopic rod of the vertical driving cylinder is fixedly connected to the vertical moving plate, and the support is fixedly arranged on the vertical moving plate.

8. The flipping device for screen printing of ceramic resistor elements according to claim 1, characterized in that: The conveying mechanism comprises a conveying guide rail, a conveying belt and a conveying driving mechanism. The conveying guide rails are provided with two and are arranged along a direction perpendicular to the conveying direction of the jig.

9. The flipping device for screen printing of ceramic resistor elements according to claim 8, characterized in that: The vertical drive mechanism is arranged on one side of the two conveying guide rails, wherein the conveying guide rail closer to the vertical drive mechanism is provided with a gap for avoiding the turning frame; the conveyor belts are provided with two groups and are arranged along a direction perpendicular to the jig conveying, and a group of conveyor belts corresponding to the conveying guide rail closer to the vertical drive mechanism is provided with two conveyor belts, and the two conveyor belts are located at both ends of the gap.

10. A turning method for a turning device for screen printing of ceramic resistor elements according to any one of claims 1 to 9, characterized in that: The following steps are involved: The jig with the ceramic resistor element with one side printed is placed on the conveying mechanism, and the conveying mechanism conveys the jig toward the flipping mechanism, at which time the printed side of the ceramic resistor element faces upward; When the jig with the ceramic resistor element printed on one side is transported to the grabbing station, the two groups of grabbing components are respectively located at the upper and lower parts of the jig, and the grabbing component located at the upper part grabs the unloaded jig with the placement slot facing downwards; The grab driving member of the grab assembly located at the bottom drives the grab member to approach upward and grab the jig equipped with the ceramic resistor element with one side printed, and the grab driving member of the grab assembly located at the top drives the grab member to move downward, so that the unloaded jig with the placement slot facing downward is covered on the jig equipped with the ceramic resistor element with one side printed, and at this time, the positions of the multiple placement slots of the jig located at the top correspond to the positions of the multiple ceramic resistor elements in the jig located at the bottom. The turning frame is driven upward by the vertical driving mechanism to move the two jigs away from the conveying mechanism; The flip drive mechanism drives the flip frame to flip 180 degrees, so that the originally unloaded fixture turns to the bottom and takes over the ceramic resistor element. At this time, the printed surface of the ceramic resistor element faces downward, and the fixture originally loaded with the ceramic resistor element is located at the top and is in an inverted unloaded state, ready to receive the next set of flipped ceramic resistor elements; The flip frame is driven downward by the vertical driving mechanism, and the jig loaded with the ceramic resistor element is placed on the conveying mechanism, which then continues to convey it downward; According to the above operation, the ceramic resistance element is turned over continuously.

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