Disclosure of Invention
Technical problem to be solved
The invention aims to provide an injector printing positioning mechanism, which overcomes the defect that the existing injector printing positioning mechanism uses an integral positioning disc, and cannot be independently adjusted when the printing of individual products is changed or unqualified.
Another object of the present invention is to provide a printing and positioning mechanism for an injector, which solves the problem of non-uniform zero line of the printed products of the existing printing and positioning mechanism for injectors.
(II) technical scheme
In order to solve the technical problem, the invention provides a printing and positioning mechanism for an injector, which comprises a positioning assembly, a positioning mechanism and a positioning mechanism, wherein the positioning assembly comprises an upper chuck, and the peripheral edge of the upper chuck is provided with an inwards concave groove for fixing an injection tube; a plurality of positioning blocks which are circumferentially arranged are arranged on the upper end face of the upper chuck, and the positioning blocks are fixed on the upper chuck through detachable positioning fasteners; the side face of the outer end of the positioning block is provided with a positioning groove which is inwards sunken and matched with the outer side face of the injection tube handle. The invention adopts a plurality of independent positioning blocks to replace an integral positioning disc, and when the printing of individual products is changed or unqualified, the printing is qualified by adjusting the independent positioning blocks.
Preferably, the positioning block rotates along with the product in a single direction, and the positioning rotating block can only rotate along with the product in the single direction, so that the printing accuracy is effectively guaranteed.
Preferably, the positioning groove is provided with a first inclined guide surface and a second inclined guide surface, and an included angle between the first inclined guide surface and the second inclined guide surface is an obtuse angle; when one of the positioning grooves is tangent to one groove on the periphery of the feeding disc, the second inclined guide surface is superposed with the tangent line of the tangent surface. Furthermore, the second inclined guide surface is overlapped with the outer tangent line of the cutting surface, so that the problem that the process is smooth and is not sticky when the handle area of the injector is turned into the positioning groove is solved, the operation precision is guaranteed, the stress of the positioning groove is uniform, the direction is consistent, and the positioning precision is still higher after thousands of operations are improved.
Preferably, the positioning assembly comprises a lower chuck, and the peripheral edge of the lower chuck is provided with a concave groove; the positioning assembly is provided with a printing zero line adjusting assembly below, the printing zero line adjusting assembly comprises a connecting plate, a supporting column is mounted at one end of the connecting plate, a zero line adjusting block is mounted at the top end of the supporting column and used for supporting the bottom end of the injection tube, so that the top end of the injection tube is abutted against the fixed pressing block to adjust the height of the fixed pressing block. The vertical and horizontal positions of the printing zero line adjusting assembly can be adjusted according to the printing position, the printing zero line adjusting assembly guarantees the printing starting time of a product separated from the positioning sheet, meanwhile, the height of the zero line can be finely adjusted, the positioning position is adjusted to zero after each rotation, and the printing precision is guaranteed. The other end of the connecting plate, which is far away from the supporting column, is fixedly connected with the printing rotating shaft. The zero line is an important index in the aspect of injector printing detection, the height positioning of the positioning zero line is adjusted by a printing zero line adjusting component, and the heights of the barrel cone head and the zero line are uniform in the prior art, so that the defect of non-uniform zero lines of a plurality of products is overcome according to the characteristics of injector products.
Preferably, the zero line adjusting block comprises a bottom plate and an adjusting plate positioned at the upper part of the bottom plate, the middle part of the adjusting plate is a horizontal sliding sheet, and two ends of the sliding sheet are provided with inclined plates inclined towards the outer side of the sliding sheet; the adjusting plate is used for supporting the bottom end of the injection tube, so that the top end of the injection tube is supported against the fixed pressing block.
Preferably, the injector printing positioning mechanism further comprises a feeding device and a pressing and fixing device, the pressing and fixing device comprises a fixing component, a printing rotating shaft and a printing component connected with the printing rotating shaft, the top of the fixing component is provided with an arc-shaped guide disc arranged along the circumferential direction of the printing rotating shaft, and two ends of the guide disc are provided with inclined planes inclining from the top end of the guide disc to the bottom plate of the top plate; the printing component comprises a connecting piece, the top end of the connecting piece is provided with a roller, and the roller moves along the top surface of the guide disc and is used for driving the printing component to move up and down;
preferably, the feeding device comprises a feeding rotating shaft and a feeding disc arranged on the upper part of the feeding rotating shaft, and a feeding fixed disc is arranged on the outer side of the feeding disc; the feeding fixed disc is fixed on the fixed bottom plate through the feeding fixed column.
Preferably, the fixed disc is provided with a feeding fence, the feeding fence is vertically connected with the feeding fixed disc, the feeding fence comprises a guide plate, a connecting plate and a vertical baffle, one end of the connecting plate is connected with the guide plate, and the other end of the connecting plate is connected with the vertical baffle; the side walls of the guide plate, the connecting plate and the vertical baffle are provided with matching surfaces with the side wall of the handle at the top end of the injector.
Preferably, the top of the guide plate is provided with a wedge surface with an arc surface.
Preferably, the fixing assembly comprises a fixing top plate, and the guide disc is installed on the inner side of the upper part of the fixing top plate; the top of the fixed top plate is also provided with a press plate fixing block and a roller pressing block, the press plate fixing block is provided with a vertical movable groove, the roller pressing block is detachably mounted in the movable groove through a fastener, and the bottom surface of the roller pressing block is used for abutting against the roller to adjust the horizontal height of the roller.
Preferably, the top end of the connecting piece is connected with a vertical plate, a nut rotating shaft is arranged on the vertical plate, and a roller is rotatably arranged on the nut rotating shaft; the bottom end of the connecting piece is provided with a pair of fixing rods and a pressing plate, the top ends of the fixing rods are connected with the connecting piece, the bottom ends of the fixing rods are connected with the pressing plate, and the tail end of the outer side of the pressing plate is provided with a fixing pressing block; the fixed pressing block is over against the end of the syringe barrel fixed by the positioning block; and the bottom end of the fixed pressing block is provided with a pressing ring which can rotate along the printing direction in a single direction.
Preferably, the middle part of the fixing component is provided with an annular fixing plate, and a gap is reserved between the fixing plate and the upper chuck or the lower chuck to form a sliding guide rail convenient for the movement of the injection cylinder.
Preferably, a printing turntable is mounted at the top of the printing rotating shaft, and the fixing component is fixed on the printing turntable.
(III) advantageous effects
The invention provides a printing and positioning mechanism for an injector, which has the following advantages:
1. the invention adopts a plurality of independent positioning blocks to replace an integral positioning disc, and when the printing of individual products is changed or unqualified, the printing is qualified by adjusting the independent positioning blocks.
2. The positioning rotating block can only rotate along with the product in a single direction, and the printing accuracy is effectively guaranteed.
3. Furthermore, the second inclined guide surface is overlapped with the outer tangent line of the inclined surface, so that the problem that the process is smooth and does not stick when the handle area of the injector is turned into the positioning groove is solved, the operation precision is ensured, the stress of the positioning groove is uniform, the direction is consistent, and the positioning precision is still higher after thousands of operations are improved.
4. The vertical and horizontal positions of the printing zero line adjusting assembly can be adjusted according to the printing position, the printing zero line adjusting assembly guarantees the printing starting time of a product separated from the positioning sheet, meanwhile, the height of the zero line can be finely adjusted, the positioning position is adjusted to zero after each rotation, and the printing precision is guaranteed. The zero line is an important index in the aspect of injector printing detection, the height positioning of the positioning zero line is adjusted by a printing zero line adjusting component, and the heights of the barrel cone head and the zero line are uniform in the prior art, so that the condition that the zero lines of a plurality of products are different is improved according to the characteristics of injector products.
Example 1:
as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a syringe printing positioning mechanism, which comprises a positioning assembly 1, a pressing and fixing device 2 and a feeding device 3; the pressing and fixing device comprises a fixing component 4, a printing rotating shaft 5 and a printing component 6 connected with the printing rotating shaft, wherein the top of the fixing component is provided with an arc-shaped guide disc 7 arranged along the circumferential direction of the printing rotating shaft, and two ends of the guide disc are provided with inclined planes 8 inclining from the top end of the guide disc to the bottom plate of the top plate; the printing component comprises a connecting piece 9, wherein a roller 10 is arranged at the top end of the connecting piece, and the roller moves along the top surface of the guide disc and is used for driving the printing component to move up and down.
The feeding device comprises a feeding rotating shaft 11 and a feeding disc 12 arranged on the upper part of the feeding rotating shaft, and a feeding fixed disc 13 is arranged on the outer side of the feeding disc; the feed holding pan is secured to a holding pan 54 by feed holding posts 29.
The positioning assembly is fixedly connected with the printing rotating shaft and comprises an upper chuck 15 and a lower chuck 16, and the peripheral edges of the upper chuck and the lower chuck are provided with inwards concave grooves 17 for fixing the injection cylinder; a plurality of positioning blocks 18 which are circumferentially arranged are arranged on the upper end face of the upper chuck, and the positioning blocks are fixed on the upper chuck through detachable positioning fasteners 19; the side face of the outer end of the positioning block is provided with a positioning groove 20 which is formed by inwards sinking, and the positioning groove is matched with the outer side face of the injection tube handle. The positioning block rotates along with the product in a single direction, and the bottom of the positioning rotating block is provided with a reset torsion spring.
A printing zero line adjusting component 21 is arranged below the positioning component, the printing zero line adjusting component comprises a connecting plate 22, one end of the connecting plate is fixed on the printing rotating shaft, a supporting column 55 is arranged at the other end of the connecting plate, a zero line adjusting block 23 is arranged at the top end of the supporting column, the zero line adjusting block comprises a bottom plate 24 and an adjusting plate 25 positioned on the upper portion of the bottom plate, a horizontal sliding sheet 26 is arranged in the middle of the adjusting plate, and inclined plates 27 inclined towards the outer side of the sliding sheet are arranged at two ends of the; the adjusting plate is used for supporting the bottom end of the injection tube, so that the top end of the injection tube is abutted against the fixed pressing block, and the height of the fixed pressing block is adjusted.
The feeding fence is arranged on the fixed disc and is vertically connected with the feeding fixed disc, the feeding fence comprises a guide plate 30, a connecting plate 31 and a vertical baffle plate 32, one end of the connecting plate is connected with the guide plate, and the other end of the connecting plate is connected with the vertical baffle plate; the side walls of the guide plate, the connecting plate and the vertical baffle plate are provided with a matching surface 33 with the side wall of the handle at the top end of the injector. The top of the guide plate has a wedge surface 34 with an arc surface.
The positioning groove is provided with a first inclined guide surface 35 and a second inclined guide surface 36, and an included angle between the first inclined guide surface and the second inclined guide surface is an obtuse angle; when one of the positioning slots 20 is tangent to one of the slots on the periphery of the feed tray, the second inclined guide surface 36 coincides with the outer tangent of the tangent plane 33.
The fixing component comprises a fixed top plate 37, and the guide disc is arranged on the inner side of the upper part of the fixed top plate; the top of the fixed top plate is also provided with a pressing plate fixing block 38 and a roller pressing block 39, the pressing plate fixing block is provided with a vertical movable groove 40, the roller pressing block is detachably mounted in the movable groove through a fastener, and the bottom surface of the roller pressing block is used for abutting against the roller to adjust the horizontal height of the roller.
The printing rotating shaft is provided with a printing rotating disc 41 at the top, and the fixing component is fixed on the printing rotating disc. An annular fixing plate 42 is further arranged on the outer side of the upper chuck, and a gap is reserved between the fixing plate and the upper chuck to form a sliding guide rail 43 which is convenient for movement of the injection cylinder. The fixing plate comprises an arc-shaped guide block 44 and an adjusting block 45, steps 46 which are recessed from top to bottom are arranged at the end parts of the two ends of the guide block, and the two ends of the adjusting block are fixed on the steps through fixing pieces. The adjusting block comprises a guide surface 47 which is positioned on the inner side and matched with the outer edge of the upper chuck and an inwards concave positioning surface 48 which is positioned on the outer side. The positioning surface of the adjusting block of the invention is opposite to the compressing and fixing device.
The top end of the connecting piece is connected with a vertical plate 49, a nut rotating shaft 50 is arranged on the vertical plate, and a roller is rotatably arranged on the nut rotating shaft; the bottom end of the connecting piece is provided with a pair of fixed rods 52 and a pressing plate 53. The top end of the fixed rod is connected with the connecting piece, the bottom end of the fixed rod is connected with the pressing plate, and the tail end of the outer side of the pressing plate is provided with a fixed pressing block 56; the fixed pressing block is over against the end of the syringe barrel fixed by the positioning block; and a press ring 57 capable of rotating in one direction along the printing direction is arranged at the bottom end of the fixed press block.
When the embodiment of the invention is implemented, a product enters from the feeding disc, and the handles of the syringe barrels are initially aligned in the same direction through the feeding rail; then, the product is positioned in the vertical direction through the upper chuck and the lower chuck, and then the syringe barrel handle which is frequently matched in the same direction is close to the position of the positioning sheet; the angle of the positioning sheet is just matched with the shape of a product handle, and after the syringe barrel enters the position of the positioning disc, the roller drives the connecting plate to move up and down on the guide disc; until the rotary positioning plate reaches the position of the adjusting block, the positioned products are protected to move towards the printing, and when the rotary positioning plate reaches the position of the zero line adjusting block, the products start to move upwards along with the inclination of the zero adjusting block; and printing is just started until the height of the positioning sheet is separated, and the printing is finished under the driving of the printing assembly.