CN113459656B - Central venous catheter bat printing tool and automatic bat printing machine - Google Patents

Abstract

The invention discloses a central venous catheter pad printing jig and an automatic pad printing machine, wherein the central venous catheter pad printing jig comprises a bottom plate for mounting a central venous catheter and a positioning assembly for fixing the central venous catheter so as to facilitate pad printing, and the positioning assembly comprises a fixing module for clamping and mounting the central venous catheter and a tensioning module for preventing the bending of an epitaxial tube from influencing the pad printing effect; the fixing module is arranged on the bottom plate; the tensioning module sets up the one end of bottom plate, the tensioning module includes the sliding block and is used for the drive the outside straining device who moves of sliding block along the extension pipe axis, be equipped with the tensioning connection structure of being connected with the external joint of extension pipe outer end on the sliding block. The central venous catheter pad printing jig can play a role in fixing and clamping a central venous catheter in the process of pad printing the central venous catheter.

Description

Central venous catheter bat printing tool and automatic bat printing machine

Technical Field

The invention relates to central venous catheter processing equipment, in particular to a central venous catheter pad printing jig and an automatic pad printing machine.

Background

The central venous catheter is a silica gel and PVC material pipeline placed in a human body great vein, is usually placed in subclavian veins, femoral veins, internal jugular veins and the like, and is divided into various types including single-cavity, double-cavity and three-cavity central venous catheters and the like. Clinical emergency department, ICU ward, department of anesthesia, hemodialysis room, etc. the patient of department's room is more commonly used, and the usage is more, for example can measure central venous pressure and estimate how much of fluid infusion volume, can be as the administration route of long-term parenteral nutrition to the patient of malnutrition, and when large-scale operation and hemorrhage volume are more, can maintain blood pressure through central venous catheter gives a large amount of quick venous transfusion, and uremia patient often carries out hemodialysis as vascular access, and central venous catheter is an important adjunctive therapy apparatus in medical clinic. Structurally, the central venous catheter comprises a catheter for puncturing a human body and an extension tube for outputting blood, the catheter is connected with the extension tube through an intermediate joint, two sides of the intermediate joint are provided with fixing lugs, and the outer end of the extension tube is provided with an outer joint. In the production process of the central venous catheter, information such as oil mark scales, codes, brand logo and the like on the surface of the central venous catheter needs to be printed, and the central venous catheter needs to be fixed in the oil mark process, so that the oil mark effect is guaranteed.

The traditional method is to manually place the central venous catheter on an oil printing platform, then manually press the central venous catheter on the oil printing platform, then an oil printing mechanism carries out oil printing, and after the oil printing is finished, the central venous catheter is manually taken down from the oil printing platform. Such a conventional mimeographing process has the following problems: in the whole process of oil printing, the central venous catheter needs to be manually pressed by hands, so that the labor is consumed, the processing efficiency is low, and the manufacturing cost is increased; in addition, in the process of oil printing, the two hands of an operator can be pressed in the process of pressing the oil printing head down, and potential safety hazards exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a central venous catheter pad printing jig and an automatic pad printing machine.

Another objective of the present invention is to provide an automatic pad printing machine including the above mentioned jig, which can simultaneously pad print a plurality of information, and can detect the pad printing effect, and has high automation degree and high production efficiency.

The technical scheme for solving the technical problems is as follows:

a central venous catheter pad printing jig comprises a bottom plate for mounting a central venous catheter and a positioning assembly for fixing the central venous catheter so as to facilitate pad printing, wherein the positioning assembly comprises a fixing module for clamping and mounting the central venous catheter and a tensioning module for preventing an extension tube from bending to influence the pad printing effect; wherein the fixed module is arranged on the bottom plate; the tensioning module sets up the one end of bottom plate, the tensioning module includes the sliding block and is used for the drive the outside straining device who moves of sliding block along the extension pipe axis, be equipped with the tensioning connection structure of being connected with the outer joint of extension pipe outer end on the sliding block.

The working principle of the central venous catheter is as follows:

firstly, loading the central venous catheter, and carrying the central venous catheter to a bottom plate, specifically, placing the central venous catheter on a fixing module, wherein one end of an extension tube is placed close to the tensioning module, and the central venous catheter is fixedly installed on the bottom plate under the clamping and fixing effects of the fixing module; then, pulling the sliding block to move towards the direction of the extension pipe, and connecting the outer joint with the tensioning connecting structure when the sliding block reaches the position of the outer joint, so that the outer joint is connected with the sliding block through the tensioning connecting structure; because the tensioning mechanism can drive the sliding block to move outwards along the axis of the extension tube, under the action of the tensioning mechanism, the sliding block pulls the outer joint to move outwards, and the outer joint is arranged at the outer end of the extension tube, so that the extension tube moves outwards and keeps a straightened state, and the fixation of the central venous catheter on the jig is completed; and finally, pad printing is carried out on the central venous catheter which is fixed on the jig and keeps the stretching state.

In a preferred embodiment of the present invention, the fixing module includes a slot structure disposed on the bottom plate, the slot structure includes a receiving groove for receiving the central venous catheter, wherein the receiving groove includes a front receiving groove for receiving the catheter, a rear receiving groove for receiving the extension tube, and a clamping groove for clamping the middle connector, the clamping groove includes a main body clamping groove matched with a main body portion of the middle connector and side clamping grooves matched with fixing lugs on two sides of the middle connector, and an axis of the side clamping groove is perpendicular to a length direction of the central venous catheter.

According to a preferable scheme of the invention, each front accommodating groove corresponds to three rear accommodating grooves, limiting pins are arranged on the inner side edges of the rear accommodating grooves on the two sides in the three rear accommodating grooves, one end of each limiting pin is connected to the top surface of the bottom plate, and the other end of each limiting pin extends upwards.

Preferably, the front receiving groove has five.

In a preferred embodiment of the present invention, the fixing module further includes a negative pressure adsorption structure for attaching the central venous catheter to the accommodating groove, the adsorption structure includes a plurality of air suction ports disposed in the front accommodating groove and the rear accommodating groove and an air suction channel disposed in the bottom plate, the air suction channel is communicated with the air suction ports, and one end of the air suction channel is communicated with the negative pressure air source through an air nozzle.

Preferably, the suction passage has a plurality of suction passages arranged along a length direction of the base plate.

In a preferred embodiment of the present invention, the tension connection structure includes a connection groove disposed on the top surface of the sliding block, the connection groove includes a connection groove and an avoidance groove for passing through the extension tube of the central venous catheter, wherein the connection groove is matched with an external joint at the outer end of the extension tube.

In a preferred aspect of the present invention, the tensioning mechanism includes a sliding mechanism and an auxiliary mechanism for driving the sliding block to move outward, wherein the sliding mechanism includes a guide and a sliding part matched with the guide, the sliding block is disposed on the sliding part, and an axial direction of the guide is parallel to a length direction of the bottom plate; the complementary unit is including setting up stiff end connecting piece, the setting of bottom plate tip are in flexible end connecting piece on the sliding block and be used for the slider provides outside tensile elastic component, elastic component one end with the stiff end connecting piece is connected, the other end with the flexible end connecting piece is connected.

Preferably, the sliding mechanism is a sliding rail and sliding block mechanism, wherein the guide part is a sliding rail, the sliding part is a sliding block, and the sliding block is mounted on the sliding block through a screw; and the bottom plate is provided with a mounting groove for mounting the sliding block mechanism.

Preferably, the elastic component is an extension spring, and the fixed end connecting component and the movable end connecting component are both provided with drag hook holes matched with drag hooks at two ends of the extension spring.

Preferably, the fixed end connector is a screw, and the hook hole is arranged at the end of the screw; the bottom plate tip be equipped with the screw hole that the screw matches, the axis of screw hole with the length direction of bottom plate is parallel and with the mounting groove intercommunication.

Preferably, the movable end connecting piece is a screw, and the draw hook hole is formed in the end of the screw; the sliding block is provided with a threaded hole matched with the screw, and the axis of the threaded hole is parallel to the length direction of the bottom plate and penetrates through the sliding block.

In a preferred embodiment of the present invention, the bottom plate is provided with a discharge chute for removing the central venous catheter, and the discharge chute is positioned in front of the clamping chute.

A central venous catheter automatic pad printing machine comprises a rack, a multi-station workbench arranged on the rack, a first pad printing module used for pad printing information on a catheter and an intermediate joint, a second pad printing module used for pad printing information on an epitaxial tube, a detection module used for detecting pad printing effect and a blanking module, wherein the multi-station workbench comprises a feeding station, a first pad printing station, a second pad printing station and a blanking station, each station is provided with a jig, and each jig sequentially passes through the feeding station, the first pad printing station, the second pad printing station and the blanking station in the working process; the first pad printing module corresponds to the first pad printing station, the second pad printing module corresponds to the second pad printing station, and the detection module and the blanking module correspond to the blanking station.

According to a preferred scheme of the invention, the multi-station rotary table is a multi-station rotary table, and comprises a rotary disc and a rotary disc driving mechanism for driving the rotary disc to rotate, wherein the rotary disc is mounted on the rack through a bearing, the rotary disc driving mechanism comprises a rotary disc driving motor and a rotary disc transmission mechanism, and the rotary disc transmission mechanism is arranged between the rotary disc and the rotary disc driving motor; the rotary table transmission mechanism comprises a driven gear arranged at the bottom of the rotary table and a driving gear arranged on a rotary shaft of the rotary table driving motor, the axis of the driven gear is overlapped with the axis of the rotary table, and the driving gear is meshed with the driven gear.

According to a preferable scheme of the invention, the rotating disc is provided with four mounting positions for mounting the jig, the four mounting positions are uniformly distributed in the circumferential direction, and in the working process, the four mounting positions respectively correspond to four different stations, namely a feeding station, a first pad printing station, a second pad printing station and a discharging station.

In a preferred aspect of the present invention, the first pad printing module includes a first pad printing head for providing pad printing information to the central venous catheter, a first pad printing driving mechanism for driving the first pad printing head to perform pad printing work, a printing plate device for forming pad printing information, and a visual alignment device, wherein the printing plate device includes an etching plate filled with ink and a scraper for scraping off excess ink on the etching plate; the first pad printing head comprises a scale pad printing rubber head and a logo pad printing rubber head; the visual alignment device comprises a CCD camera for acquiring the position of the catheter.

In a preferred embodiment of the present invention, the first pad printing driving mechanism includes a first X-axis driving mechanism for driving the first pad printing head to move in an X-axis direction, a first Y-axis driving mechanism for driving the first pad printing head to move in a Y-axis direction, a first Z-axis driving mechanism for driving the first pad printing head to move in a Z-axis direction, and a first press-down driving mechanism for driving the first pad printing head to perform a press-down action, where the first X-axis driving mechanism includes a first X-axis linear module and a first X-axis driving motor, the first Y-axis driving mechanism includes a first Y-axis linear module and a first Y-axis driving motor, the first Z-axis driving mechanism includes a first Z-axis linear module and a first Z-axis driving motor, and the first press-down driving mechanism includes a scale pad printing head driving cylinder for mounting the scale pad printing head, a logo pad printing head driving cylinder for mounting the logo pad printing head, and a first connection plate; the scale rubber head driving air cylinder and the logo rubber head driving air cylinder are both arranged on the first connecting plate, and the first connecting plate is arranged on the sliding block of the first Z-axis linear module; the main part of the first Z axis linear module is installed on the sliding block of the first Y axis linear module, the main part of the first Y axis linear module is installed on the sliding block of the first X axis linear module, and the main part of the first X axis linear module is installed on the rack.

In a preferred aspect of the present invention, the second pad printing module includes a second pad printing head for providing pad printing information to the central venous catheter, a second pad printing driving mechanism for driving the second pad printing head to perform pad printing work, and a printing plate device for forming pad printing information, wherein the printing plate device includes an etching plate filled with ink and a scraper for scraping off excess ink on the etching plate; the second pad printing head comprises a character pad printing rubber head.

In a preferred embodiment of the present invention, the second pad printing driving mechanism includes a second X-axis driving mechanism for driving the second pad printing head to move in the X-axis direction, a second Y-axis driving mechanism for driving the second pad printing head to move in the Y-axis direction, a second Z-axis driving mechanism for driving the second pad printing head to move in the Z-axis direction, and a second pressing driving mechanism for driving the second pad printing head to perform a pressing action, where the second X-axis driving mechanism includes a second X-axis linear module and a second X-axis driving motor, the second Y-axis driving mechanism includes a second Y-axis linear module and a second Y-axis driving motor, the second Z-axis driving mechanism includes a second Z-axis linear module and a second Z-axis driving motor, and the second pressing driving mechanism includes a text pad printing head driving cylinder for mounting the text pad printing head and a second connecting plate; the character rubber head driving cylinder is installed on the second connecting plate, and the second connecting plate is installed on the sliding block of the second Z-axis linear module; the main body of the second Z axis linear module is arranged on the sliding block of the second X axis linear module, the main body of the second X axis linear module is arranged on the sliding block of the second Y axis linear module, and the main body of the second Y axis linear module is arranged on the rack.

According to a preferable scheme of the invention, the blanking module comprises a mechanical claw used for taking off a central venous catheter from a jig, a material receiving frame and a blanking driving mechanism used for driving the mechanical claw to move, the blanking driving mechanism comprises a third X-axis driving mechanism used for driving the mechanical claw to move in the X-axis direction, a third Y-axis driving mechanism used for driving the mechanical claw to move in the Y-axis direction, a third Z-axis driving mechanism used for driving the mechanical claw to move in the Z-axis direction and a taking and placing driving mechanism used for driving the mechanical claw to perform grabbing and opening actions, wherein the third X-axis driving mechanism comprises a third X-axis linear module and a third X-axis driving motor, the third Y-axis driving mechanism comprises a third Y-axis linear module and a third Y-axis driving motor, the third Z-axis driving mechanism comprises a third Z-axis linear module and a third Z-axis driving motor, the taking and placing driving mechanism comprises a finger cylinder and a third Z-axis connecting plate, the finger cylinder is mounted on the third connecting plate, and the third connecting plate is mounted on a slide block of the third Z-axis linear module; the main body of the third Z-axis linear module is installed on the sliding block of the third Y-axis linear module, the main body of the third Y-axis linear module is installed on the sliding block of the third X-axis linear module, and the main body of the third X-axis linear module is installed on the rack.

Preferably, the mechanical claw comprises two single-sided claws, each single-sided claw comprises an installation part and a clamping part, and a semicircular clamping position matched with the central venous catheter is arranged on each clamping part; the unilateral claw is installed through the installation department on the clamping jaw of finger cylinder.

In a preferred embodiment of the present invention, the detection module includes a visual detection device, the visual detection device includes a CCD detection camera and a camera support for mounting the CCD detection camera, and the camera support is mounted on the third connection board.

According to a preferable scheme of the invention, a hot air blowing module for blowing and drying the pad printing ink on the central venous catheter is further arranged on the blanking station, and the hot air blowing module comprises a hot air pipe and a hot air pipe bracket for mounting the hot air pipe; the hot-blast main is arranged above the jig, the axis of the hot-blast main is perpendicular to the length direction of the jig, a plurality of hot air outlets are arranged on the hot-blast main, and the plurality of hot air outlets face the position of the central venous catheter pad printing ink.

Compared with the prior art, the invention has the following beneficial effects:

1. the central venous catheter pad printing jig can replace a manual pressing mode, liberates two hands, and enables an operator to only perform feeding operation, so that the work efficiency of pad printing is greatly improved, and the manufacturing cost is reduced.

2. The central venous catheter pad printing jig can be used for simultaneously installing and clamping a plurality of central venous catheters, so that the central venous catheters can be simultaneously pad printed, and the pad printing working efficiency is greatly improved.

3. The central venous catheter pad printing jig has the advantages that under the dual functions of the fixing module and the tensioning module, the central venous catheter pad printing jig not only has a fixing function, but also can keep the central venous catheter in a straightening state, so that the pad printing effect is better.

Drawings

Fig. 1 is a perspective view of a three-lumen central venous catheter.

Fig. 2 is a perspective view of a three-lumen central venous catheter mounted to the central venous catheter pad printing jig of the present invention.

Fig. 3 is a perspective view of the central venous catheter pad printing jig of the invention.

Fig. 4 is a front cross-sectional view of the central venous catheter pad printing jig of the invention.

Fig. 5 is a perspective view of the slider.

Fig. 6 is a perspective view of the central venous catheter automatic pad printing machine of the present invention.

Fig. 7-8 are schematic structural views of the multi-station workbench, wherein fig. 7 is a front view, and fig. 8 is a perspective view.

Fig. 9-10 are schematic structural views of a first pad printing module, wherein fig. 9 is a front view and fig. 10 is a perspective view.

Fig. 11-12 are schematic structural views of a second pad printing module, in which fig. 11 is a front view and fig. 12 is a perspective view.

Fig. 13-14 are schematic structural views of the blanking module, in which fig. 13 is a front view, and fig. 14 is a perspective view.

Fig. 15 is a perspective view of a hot blast module.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

Referring to fig. 1-5, the central venous catheter pad printing jig and the automatic pad printing machine of the invention comprise a bottom plate 5 for installing a central venous catheter, and a positioning assembly for fixing the central venous catheter so as to facilitate pad printing, wherein the positioning assembly comprises a fixing module for clamping and installing the central venous catheter and a tensioning module for preventing an extension tube 2 from bending to influence the pad printing effect; wherein the fixing module is arranged on the bottom plate 5; the tensioning module is arranged at one end of the bottom plate 5, the tensioning module comprises a sliding block 6 and a tensioning mechanism used for driving the sliding block 6 to move outwards along the axis of the extension tube 2, and a tensioning connection structure connected with an outer joint 4 at the outer end of the extension tube 2 is arranged on the sliding block 6.

Referring to fig. 1 and 3, the fixing module comprises a clamping groove structure arranged on the bottom plate 5, the clamping groove structure comprises a receiving groove for receiving a central venous catheter, wherein the receiving groove comprises a front receiving groove 7 for receiving a catheter 1, a rear receiving groove 8 for receiving the extension tube 2 and a clamping groove 9 for clamping the intermediate joint 3, the clamping groove 9 comprises a main body clamping groove 9-1 matched with a main body part of the intermediate joint 3 and a side edge clamping groove 9-2 matched with fixing lugs 3-1 at two sides of the intermediate joint 3, and the axis of the side edge clamping groove 9-2 is perpendicular to the length direction of the central venous catheter. By arranging the clamping groove structure, when the central venous catheter is installed on the fixed module, the catheter 1 is partially placed in the front accommodating groove 7, the extension catheter 2 is partially placed in the rear accommodating groove 8, the intermediate joint 3 is placed in the clamping groove 9, specifically, the main body part of the intermediate joint 3 is matched with the main body clamping groove 9-1, the fixing lugs 3-1 on two sides of the intermediate joint 3 are matched with the side clamping grooves 9-2, and the axial line of the side clamping grooves 9-2 is perpendicular to the length direction of the central venous catheter, so that after the intermediate joint 3 is placed in the clamping groove 9, the side clamping grooves 9-2 limit the freedom degree of the fixing lugs 3-1 in the length direction of the central venous catheter, and the central venous catheter is fixed and clamped on the bottom plate 5.

Referring to fig. 3, each front accommodating groove 7 corresponds to three rear accommodating grooves 8, among the three rear accommodating grooves 8, a limit pin 10 is arranged on the inner side edges of the rear accommodating grooves 8 on both sides, one end of the limit pin 10 is connected to the top surface of the bottom plate 5, and the other end of the limit pin extends upward. Set up the holding tank of above-mentioned structure, when being used for holding three chamber central venous catheter, three epitaxial tube 2 are placed three back holding tank 8 respectively in, and spacer pin 10 is used for blockking that epitaxial tube 2 that is located both sides leaps up towards the centre for three epitaxial tube 2 keep straight, convenient bat printing. In addition, the three back holding grooves 8 are arranged, so that the installation requirements of central venous catheters of different models, such as the installation requirements of a single-cavity central venous catheter, a double-cavity central venous catheter and a three-cavity central venous catheter, can be met, and the adaptability is high.

Referring to fig. 2 to 3, the front receiving grooves 7 are five. Set up a plurality of holding tank 7 in front for can hold five central venous catheters simultaneously on the bottom plate 5, like this, carrying out the in-process of bat printing, to five central venous catheters bat printing simultaneously, improve the efficiency of bat printing, save man-hour, manufacturing cost.

Referring to fig. 2-4, the fixing module further includes a negative pressure adsorption structure for attaching the central venous catheter to the holding tank, the adsorption structure includes a plurality of air suction ports 11 disposed in the front holding tank 7 and the rear holding tank 8 and an air suction channel 12 disposed in the bottom plate 5, the air suction channel 12 is communicated with the air suction ports 11, and one end of the air suction channel 12 is communicated with a negative pressure air source through an air nozzle 13. Set up above-mentioned negative pressure adsorption structure, 12 one ends of suction channel and negative pressure air supply intercommunication, form the negative pressure in the suction channel 12 like this, because suction channel 12 and 11 intercommunications of induction port, consequently, 11 inside negative pressures that also form of induction port, 11 induction ports that set up like this in preceding holding tank 7 and the back holding tank 8 form the adsorption to pipe 1 and extension pipe 2, make the laminating of central venous catheter on bottom plate 5, it is more firm, convenient bat printing.

Referring to fig. 2 to 4, the suction passage 12 has a plurality of suction passages 12, and the plurality of suction passages 12 are arranged along the length direction of the base plate 5. The plurality of air suction channels 12 are arranged, so that a plurality of air suction ports 11 can be formed in the front accommodating groove 7 and the rear accommodating groove 8, the adsorption capacity of the catheter and the extension pipe 2 is improved, the central venous catheter can be smoothly attached to the bottom plate 5, and transfer printing is facilitated.

Referring to fig. 1-3 and 5, the tension connection structure comprises a connection groove disposed on the top surface of the sliding block 6, the connection groove comprises a connection slot 6-1 and an escape groove 6-2 for passing through the extension tube 2 of the central venous catheter, wherein the connection slot 6-1 is matched with the outer joint 4 at the outer end of the extension tube 2. The tension connecting structure is arranged, when the extension tube 2 and the sliding block 6 need to be connected, the sliding block 6 is firstly slid to the position of the outer joint 4, then the outer joint 4 is placed in the connecting clamping groove 6-1, and the connecting clamping groove 6-1 is matched with the outer joint 4, so that the outer joint 4 is clamped in the connecting clamping groove 6-1, and the connection of the extension tube 2 and the sliding block 6 is completed; the avoiding groove 6-2 is used for avoiding the extension pipe 2, and after the outer joint 4 is connected with the connecting clamping groove 6-1, the extension pipe 2 still keeps straight, so that transfer printing is facilitated.

2-3, the tensioning mechanism comprises a sliding mechanism and an auxiliary mechanism for driving the sliding block 6 to move outwards, wherein the sliding mechanism comprises a guide piece 14 and a sliding piece 15 matched with the guide piece 14, the sliding block 6 is arranged on the sliding piece 15, and the axial direction of the guide piece 14 is parallel to the length direction of the bottom plate 5; complementary unit is including setting up the stiff end connecting piece 16, the setting of bottom plate 5 tip are in movable end connecting piece 17 on the sliding block 6 and be used for slider 15 provides outside tensile elastic component 18, elastic component 18 one end with stiff end connecting piece 16 is connected, the other end with movable end connecting piece 17 is connected. By providing the tensioning mechanism with the above structure, the guide member 14 is matched with the sliding member 15 and the axial direction of the guide member 14 is parallel to the longitudinal direction of the bottom plate 5, so that the sliding member 15 can slide along the longitudinal direction of the bottom plate 5, and the sliding block 6 arranged on the sliding member 15 can slide back and forth along the longitudinal direction of the bottom plate 5; the both ends of elastic component 18 are connected with stiff end connecting piece 16 and the expansion end connecting piece 17 of setting on sliding block 6 respectively, and after sliding block 6 inwards slides certain distance, elastic component 18 receives tensile to provide an outside pulling force for sliding block 6, make sliding block 6 along the outside motion of guide 14, thereby outside flare-out extension pipe 2, convenient bat printing.

Referring to fig. 2 to 3, the sliding mechanism is a sliding rail and slider mechanism, wherein the guide 14 is a sliding rail, the sliding member 15 is a slider, and the sliding block 6 is mounted on the slider through a screw; and the bottom plate 5 is provided with a mounting groove 19 for mounting the sliding block mechanism. By the sliding mechanism, the matching precision of the sliding rail and the sliding block is high, the sliding is smooth, and the central venous catheter can be mounted more conveniently.

Referring to fig. 2 to 3, the elastic member 18 is an extension spring, and the fixed end connecting member 16 and the movable end connecting member 17 are provided with hook holes for matching with hooks at two ends of the extension spring. Therefore, when the tension spring is installed, the tension spring can be installed only by buckling the tension hooks of the tension spring to the tension hook holes respectively, and the tension spring is simple to assemble and convenient to maintain.

Referring to fig. 2 to 3, the fixed end connector 16 is a screw, and the hook hole is provided at an end of the screw; the end part of the bottom plate 5 is provided with a threaded hole matched with the screw, and the axis of the threaded hole is parallel to the length direction of the bottom plate 5 and is communicated with the mounting groove 19. Thus, the screw is mounted from the end of the base plate 5 and locked in the threaded hole, and the end of the screw reaches into the mounting groove 19 to facilitate connection with the extension spring.

Referring to fig. 2 to 3, the movable end connecting piece 17 is a screw, and the hook pulling hole is formed at the end of the screw; and a threaded hole matched with the screw is formed in the sliding block 6, and the axis of the threaded hole is parallel to the length direction of the bottom plate 5 and penetrates through the sliding block 6.

Referring to fig. 1 to 3, the bottom plate 5 is provided with a discharge chute 20 for removing the central venous catheter, and the discharge chute 20 is positioned in front of the chucking chute. The discharge chute 20 is arranged, and after the pad printing is completed, a discharge tool is used for extending into the discharge chute 20, so that the central venous catheter can be conveniently detached.

The working principle of the central venous catheter described above with reference to fig. 1-5 is:

firstly, loading the central venous catheter, and carrying the central venous catheter to a bottom plate 5, specifically, placing the central venous catheter on a fixing module, wherein one end of an extension tube 2 is placed close to the tensioning module, and the central venous catheter is fixedly installed on the bottom plate 5 under the clamping and fixing action of the fixing module; then, the sliding block 6 is pulled to move towards the direction of the extension pipe 2, and when the sliding block 6 reaches the position of the outer joint 4, the outer joint 4 is connected with the tensioning connection structure, so that the outer joint 4 is connected with the sliding block 6 through the tensioning connection structure; because the tensioning mechanism can drive the sliding block 6 to move outwards along the axis of the extension tube 2, under the action of the tensioning mechanism, the sliding block 6 pulls the outer joint 4 to move outwards, and the outer joint 4 is arranged at the outer end of the extension tube 2, so that the extension tube 2 moves outwards and keeps a straightened state, and the fixation of the central venous catheter on the jig is completed; and finally, pad printing is carried out on the central venous catheter which is fixed on the jig and keeps the stretching state.

Referring to fig. 1-15, an automatic pad printing machine for central venous catheters comprises a frame 21, a multi-station workbench 22 arranged on the frame 21, a first pad printing module 23 used for pad printing information on a catheter 1 and an intermediate joint 3, a second pad printing module 24 used for pad printing information on an epitaxial tube 3, a detection module used for detecting pad printing effect, and a blanking module 25, wherein the multi-station workbench 22 comprises a feeding station, a first pad printing station, a second pad printing station, and a blanking station, each station is provided with a jig 28 used for fixedly clamping a central venous catheter, and each jig 28 sequentially passes through the feeding station, the first pad printing station, the second pad printing station, and the blanking station in a working process; the first pad printing module 23 corresponds to a first pad printing station, the second pad printing module 24 corresponds to a second pad printing station, and the detection module and the blanking module 25 both correspond to blanking stations.

Referring to fig. 6, 7-8, in a preferred embodiment of the present invention, the multi-station workbench 22 is a multi-station turntable workbench, and the multi-station turntable workbench includes a rotating disc 26 and a turntable driving mechanism for driving the rotating disc 26 to rotate, wherein the rotating disc 26 is mounted on the frame 21 through a bearing, the turntable driving mechanism includes a turntable driving motor 27 and a turntable transmission mechanism, and the turntable transmission mechanism is disposed between the rotating disc 26 and the turntable driving motor 27; the turntable transmission mechanism comprises a driven gear arranged at the bottom of the turntable and a driving gear arranged on a rotating shaft of the turntable driving motor 27, the axis of the driven gear is overlapped with the axis of the rotating disc 26, and the driving gear is meshed with the driven gear. Set up above-mentioned multistation carousel workstation, when carousel driving motor 27 rotates, the setting is followed the rotation at the epaxial driving gear of carousel driving motor 27 pivot, driving gear and driven gear intermeshing, the rotation of driving gear makes driven gear follow the rotation, because driven gear sets up the bottom at the carousel, and rolling disc 26 passes through the bearing and installs in frame 21, consequently, driven gear's rotation makes rolling disc 26 rotate in frame 21 to reach different stations.

Referring to fig. 6, 7-8, four mounting positions for mounting the jig 28 are arranged on the rotating disc 26, and are uniformly arranged in the circumferential direction, and in the working process, the four mounting positions respectively correspond to four different stations, namely a feeding station, a first pad printing station, a second pad printing station and a discharging station. Therefore, the four jigs 28 are arranged on the installation position, the four jigs 28 are uniformly distributed on the rotating disc 26, and the rotating disc 26 rotates a quarter of a circle each time under the action of the turntable driving motor 27, so that each jig 28 sequentially reaches the next station from one station, and the operation process of the stations is automatically completed.

Referring to fig. 6, 9-10, the first pad printing module 23 includes a first pad printing head for providing pad printing information to the central venous catheter, a first pad printing driving mechanism for driving the first pad printing head to perform pad printing work, a printing plate device for forming pad printing information, and a visual alignment device, wherein the printing plate device includes an etching plate filled with ink and a scraper for scraping off excess ink on the etching plate; the first transfer printing head comprises a scale transfer printing rubber head 29 and a logo transfer printing rubber head 30; the visual alignment means comprises a CCD camera 31 for acquiring the position of the catheter 1. The first pad printing module 23 is arranged, and the working process is as follows: firstly, scraping redundant ink on an etching plate by a scraper; next, the first pad printing driving mechanism acts to drive the first pad printing head to move to the position of the etching plate and drive the scale pad printing rubber head 29 and the logo pad printing rubber head 30 to press down, so that the scale pad printing rubber head 29 absorbs ink with scale information in the character slot, and the logo pad printing rubber head 30 absorbs ink with logo information in the character slot; then, the CCD camera 31 starts to work, the position deviation between the tip of the catheter 1 and the reference line is shot, the first pad printing driving mechanism carries out position compensation according to the position deviation, and the first pad printing head is driven to reach the correct position; finally, the first pad printing driving mechanism drives the scale pad printing rubber head 29 and the logo pad printing rubber head 30 to perform a pressing action, so that the ink on the scale pad printing rubber head 29 is pad printed on the conduit 1, the ink on the logo pad printing rubber head 30 is pad printed on the intermediate joint 3, and the scale and logo printing is realized.

Referring to fig. 9 to 10, the first pad printing driving mechanism includes a first X-axis driving mechanism for driving the first pad printing head to move in an X-axis direction, a first Y-axis driving mechanism for driving the first pad printing head to move in a Y-axis direction, a first Z-axis driving mechanism for driving the first pad printing head to move in a Z-axis direction, and a first press-down driving mechanism for driving the first pad printing head to perform a press-down action, where the first X-axis driving mechanism includes a first X-axis linear module 32 and a first X-axis driving motor, the first Y-axis driving mechanism includes a first Y-axis linear module 33 and a first Y-axis driving motor, the first Z-axis driving mechanism includes a first Z-axis linear module 34 and a first Z-axis driving motor, the first press-down driving mechanism includes a calibration pad printing head driving cylinder 35 for mounting the calibration pad printing head 29, a logo printing head driving cylinder 36 for mounting the logo pad printing head 30, and a first connection plate 37; the scale rubber head driving air cylinder 35 and the logo rubber head driving air cylinder 36 are both mounted on the first connecting plate 37, and the first connecting plate 37 is mounted on the sliding block of the first Z-axis linear module 34; the main body of the first Z-axis linear module 34 is mounted on the slide of the first Y-axis linear module 33, the main body of the first Y-axis linear module 33 is mounted on the slide of the first X-axis linear module 32, and the main body of the first X-axis linear module 32 is mounted on the frame 21. The first pad printing driving mechanism is arranged and can realize the movement in the X-axis direction, the Y-axis direction and the Z-axis direction, so that the first pad printing head can be driven to move from the position of the printing plate device to the position of the guide pipe 1 and the intermediate joint 3, and the moving process of the pad printing track of the pad printing head is realized; by arranging the scale rubber head driving cylinder 35, when scale printing is carried out at the position of the guide pipe 1, the scale rubber head driving cylinder 35 can be independently pressed down to drive the scale pad printing rubber head 29 to move downwards, so that scale pad printing is completed; through setting up the logo and gluing head actuating cylinder 36, when carrying out the logo printing in intermediate structure position, the logo glues head actuating cylinder 36 and can push down alone, and drive logo bat printing rubber head 30 moves down, accomplishes the bat printing of logo.

Referring to fig. 11 to 12, the second pad printing module 24 includes a second pad printing head for providing pad printing information to the central venous catheter, a second pad printing driving mechanism for driving the second pad printing head to perform pad printing work, and a printing plate device for forming pad printing information, wherein the printing plate device includes an etching plate filled with ink and a scraper for scraping off excess ink on the etching plate; the second pad print head includes a text pad print head 38. The second pad printing module 24 is arranged, and the working process is as follows: firstly, scraping redundant ink on an etching plate by a scraper; next, the second pad printing driving mechanism acts to drive the second pad printing head to move to reach the position of the etching plate and drive the character pad printing rubber head 38 to perform a pressing-down action, so that the character pad printing rubber head 38 absorbs the ink with character information in the character slot; then, the second pad printing driving mechanism drives the second pad printing head to reach the correct position above the extension tube 3; finally, the second pad printing driving mechanism drives the character pad printing rubber head 38 to perform a pressing action, so that the ink on the character pad printing rubber head 38 is pad printed on the epitaxial tube 3, and the character printing is realized.

Referring to fig. 11 to 12, the second pad printing driving mechanism includes a second X-axis driving mechanism for driving the second pad printing head to move in the X-axis direction, a second Y-axis driving mechanism for driving the second pad printing head to move in the Y-axis direction, a second Z-axis driving mechanism for driving the second pad printing head to move in the Z-axis direction, and a second press-down driving mechanism for driving the second pad printing head to perform a press-down action, where the second X-axis driving mechanism includes a second X-axis linear module 39 and a second X-axis driving motor, the second Y-axis driving mechanism includes a second Y-axis linear module 40 and a second Y-axis driving motor, the second Z-axis driving mechanism includes a second Z-axis linear module 41 and a second Z-axis driving motor, and the second press-down driving mechanism includes a text pad printing head driving cylinder 42 and a second connecting plate 43 for mounting the text pad printing head 38; the character glue head driving air cylinder 42 is installed on the second connecting plate 43, and the second connecting plate 43 is installed on the sliding block of the second Z-axis linear module 41; the main body of the second Z-axis linear module 41 is mounted on the slide of the second X-axis linear module 39, the main body of the second X-axis linear module 39 is mounted on the slide of the second Y-axis linear module 40, and the main body of the second Y-axis linear module 40 is mounted on the frame 21. The second pad printing driving mechanism is arranged and can realize the movement in the X, Y and Z axis directions, so that the second pad printing head can be driven to move from the position of the printing plate device to the position of the extension tube 3, and the moving process of the pad printing track of the pad printing head is realized; through setting up the characters and gluing head actuating cylinder 42, when carrying out characters printing in extension pipe 3 position, the characters is glued head actuating cylinder 42 and is pressed down alone, drives characters bat printing rubber head 38 and moves down, accomplishes the bat printing of characters.

Referring to fig. 13 to 14, the blanking module 25 includes a gripper 45 for taking off the central venous catheter from the jig 28, a material receiving frame 51, and a blanking driving mechanism for driving the gripper 45 to move, the blanking driving mechanism includes a third X-axis driving mechanism for driving the gripper 45 to move in the X-axis direction, a third Y-axis driving mechanism for driving the gripper 45 to move in the Y-axis direction, a third Z-axis driving mechanism for driving the gripper 45 to move in the Z-axis direction, and a pick-and-place driving mechanism for driving the gripper 45 to perform a pick-and-open action, wherein the third X-axis driving mechanism includes a third X-axis linear module 46 and a third X-axis driving motor, the third Y-axis driving mechanism includes a third Y-axis linear module 47 and a third Y-axis driving motor, the third Z-axis driving mechanism includes a third Z-axis linear module 48 and a third Z-axis driving motor, the pick-and-place driving mechanism includes a finger cylinder 49 and a third connecting plate 50, the finger cylinder 49 is mounted on the third connecting plate 50, and the third Z-axis linear module 48 is mounted on the connecting plate 50; the body of the third Z-axis linear module 48 is mounted on the slide of the third Y-axis linear module 47, the body of the third Y-axis linear module 47 is mounted on the slide of the third X-axis linear module 46, and the body of the third X-axis linear module 46 is mounted on the frame 21. The blanking driving mechanism is arranged and can realize the movement in the X-axis direction, the Y-axis direction and the Z-axis direction, so that the mechanical claw 45 can be driven to move from the position of the jig 28 to the position of the material receiving frame 51, and the movement process of the material receiving track and the material discharging track of the mechanical claw 45 is realized; the gripper 45 is arranged on the finger cylinder 49, and the material taking and placing process is as follows: firstly, the blanking driving mechanism drives the mechanical claw 45 to reach the position of the jig 28; next, the finger cylinder 49 is actuated to open the gripper 45; then, the third Z-axis linear module 48 starts to operate to drive the third connecting plate 50 to move downward, so that the gripper 45 reaches the discharge chute 20 of the jig 28; then, the finger cylinder 49 continues to act, so that the mechanical claw 45 is closed, and the central venous catheter is grabbed; next, the third Z-axis linear module 48 operates to drive the third connecting plate 50 to move upward, the blanking driving mechanism drives the gripper 45 to transport the central venous catheter from the position where the jig 28 is located to the material collecting frame 51, and according to the detection result of the detection module, the qualified product is placed in the qualified product collecting frame, the defective product is placed in the unqualified product collecting frame, and the blanking operation is completed.

Referring to fig. 13-14, the gripper 45 comprises two single-sided jaws, each of which comprises a mounting portion and a clamping portion, and a semicircular clamping position for matching with the central venous catheter is arranged on the clamping portion; the unilateral claw is installed through the installation department on the clamping jaw of finger cylinder. The mechanical claw 45 with the structure is arranged, and when the clamping jaw is opened due to the action of the finger cylinder, the two single-side claws arranged on the clamping jaw through the mounting parts are opened along with the clamping jaw; when the finger cylinder acts to close the clamping jaw, the two single-side jaws arranged on the clamping jaw are closed along with the finger cylinder and move oppositely, so that the clamping function is realized; when the central venous catheter is clamped, the central venous catheter is embraced by the semicircular clamping positions on the two unilateral claws, so that the central venous catheter is clamped, and the function of grabbing materials is realized.

Referring to fig. 13-14, the inspection module includes a vision inspection device including a CCD inspection camera 44 and a camera bracket for mounting the CCD inspection camera 44, the camera bracket being mounted on the third connecting plate 50. By arranging the detection module, the CCD detection camera 44 shoots the central venous catheter on the feeding station, obtains scale information, logo information and character information which are transfer-printed on the central venous catheter, and judges whether the printing effect is qualified; the detection of the visual detection device is high in detection efficiency and more reliable in detection precision compared with traditional manual detection.

Referring to fig. 1 and 15, a hot air blowing module for blowing dry the pad printing ink on the central venous catheter is further arranged on the blanking station, and the hot air blowing module comprises a hot air pipe 52 and a hot air pipe support 53 for mounting the hot air pipe 52; the hot air pipe 52 is arranged above the jig 28, the axis of the hot air pipe 52 is perpendicular to the length direction of the jig 28, a plurality of hot air outlets 54 are arranged on the hot air pipe 52, and the plurality of hot air outlets 54 face the position of the central venous catheter transfer printing ink. Set up above-mentioned hot air blowing module, after the bat printing is accomplished, hot-blast that hot-blast outlet 54 came out can be fast weathered the printing ink on the central venous catheter, has removed the process of waiting for printing ink natural air-drying from, has greatly practiced thrift production time, improves production efficiency.

Referring to fig. 1-15, the working principle of the automatic pad printing machine for central venous catheters is as follows:

firstly, the central venous catheter is carried at a loading station when the central venous catheter is required to be loaded, and the central venous catheter is installed on a first jig 28 according to a correct position to complete the loading operation; next, the multi-station workbench 22 is started, so that the first jig 28 moves to a first pad printing station, and the first pad printing module 23 corresponds to the first pad printing station, so that the first pad printing module 23 starts pad printing on the catheter 1 and the intermediate joint 3, specifically, imprinting the scale information on the catheter 1 and imprinting the logo information on the intermediate joint 3, and when the first pad printing module 23 works, a feeding operation is performed at a feeding station, and the central venous catheter is installed on the second jig 28 according to a correct position; next, the multi-station workbench 22 is continuously started, so that the first jig 28 moves to the second pad printing station, the second jig 28 moves to the first pad printing station, the second pad printing module 24 starts pad printing on the epitaxial tube 3, text information is pad printed on the epitaxial tube 3, all pad printing information on the central venous catheter is completed, the first pad printing module 23 performs scale and logo pad printing on the catheter 1 and the intermediate joint 3 on the second jig 28 at the first pad printing station while the second pad printing module 24 works, and the central venous catheter is installed on the third jig 28 according to the correct position at the feeding station to perform feeding operation; next, the multi-station workbench 22 is continuously started, so that the first jig 28 moves to a blanking station, and since the detection module and the blanking module 25 both correspond to the blanking station, at this time, the detection module starts to detect the central venous catheter which has been subjected to pad printing on the first jig 28, the blanking module 25 carries the qualified products and the unqualified products which are subjected to pad printing from the first jig 28 respectively according to the detection result, and at the same time, at the second pad printing station, the second pad printing module 24 performs character pad printing on the extension tube 3 on the second jig 28, the first pad printing module 23 performs scale and 1ogo pad printing on the catheter 1 and the intermediate joint 3 on the third jig 28, and at the feeding station, the central venous catheter is installed on the fourth jig 28 according to the correct position to perform feeding operation; finally, the multi-station workbench 22 is continuously started, the first jig 28 comes to the feeding station again to perform the feeding operation, and the above process is repeated. In the pad printing process of the pad printing machine, the second pad printing module 24 pad prints characters on the extension pipe 3 on the first jig 28, and the first pad printing module 23 performs scale and 1ogo pad printing on the guide pipe 1 and the intermediate joint 3, namely the pad printing machine can simultaneously pad print a plurality of information, thereby effectively improving the production efficiency; after the transfer printing is finished, the detection module detects the transfer printing effect and removes unqualified products; the multi-station workbench 22 automatically operates according to a set program, and the automation degree is high.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims (10)

1. The central venous catheter pad printing jig is characterized by comprising a bottom plate for mounting a central venous catheter and a positioning assembly for fixing the central venous catheter so as to facilitate pad printing, wherein the positioning assembly comprises a fixing module for clamping and mounting the central venous catheter and a tensioning module for preventing an extension tube from bending to influence the pad printing effect; wherein the fixed module is arranged on the bottom plate; the tensioning module sets up the one end of bottom plate, the tensioning module includes the sliding block and is used for the drive the outside straining device who moves of sliding block along the extension pipe axis, be equipped with the tensioning connection structure of being connected with the outer joint of extension pipe outer end on the sliding block.

2. The central venous catheter pad printing jig of claim 1, wherein the fixing module comprises a slot structure disposed on the base plate, the slot structure comprises a receiving slot for receiving a central venous catheter, wherein the receiving slot comprises a front receiving slot for receiving a catheter, a rear receiving slot for receiving the extension tube, and a clamping slot for clamping the intermediate joint, the clamping slot comprises a main body clamping slot matched with a main body part of the intermediate joint and side clamping slots matched with fixing lugs on two sides of the intermediate joint, and an axis of each side clamping slot is perpendicular to a length direction of the central venous catheter.

3. The central venous catheter pad printing jig according to claim 2, wherein each of the front receiving grooves corresponds to three rear receiving grooves, and of the three rear receiving grooves, a limiting pin is disposed on an inner side edge of the rear receiving grooves on both sides, one end of the limiting pin is connected to the top surface of the bottom plate, and the other end of the limiting pin extends upward.

4. The central venous catheter pad printing jig according to claim 2, wherein the fixing module further comprises a negative pressure adsorption structure for attaching the central venous catheter to the holding tank, the adsorption structure comprises a plurality of air suction ports arranged in the front holding tank and the rear holding tank and an air suction channel arranged in the bottom plate, the air suction channel is communicated with the air suction ports, and one end of the air suction channel is communicated with a negative pressure air source through an air nozzle.

5. The central venous catheter pad printing jig of claim 1, wherein the tensioning connection structure comprises a connection groove arranged on the top surface of the sliding block, the connection groove comprises a connection clamping groove and an avoiding groove used for passing through an extension pipe of the central venous catheter, and the connection clamping groove is matched with an outer joint at the outer end of the extension pipe.

6. The central venous catheter pad printing jig according to claim 1, wherein the tensioning mechanism comprises a sliding mechanism and an auxiliary mechanism for driving the sliding block to move outwards, wherein the sliding mechanism comprises a guide piece and a sliding piece matched with the guide piece, the sliding block is arranged on the sliding piece, and the axial direction of the guide piece is parallel to the length direction of the bottom plate; complementary unit is including setting up the stiff end connecting piece of bottom plate tip, setting are in expansion end connecting piece on the sliding block and be used for the slider provides outside tensile elastic component, elastic component one end with the stiff end connecting piece is connected, the other end with the expansion end connecting piece is connected.

7. The central venous catheter pad printing jig as claimed in claim 6, wherein the sliding mechanism is a sliding rail and sliding block mechanism, wherein the guiding member is a sliding rail, the sliding member is a sliding block, and the sliding block is mounted on the sliding block through a screw; and the bottom plate is provided with a mounting groove for mounting the sliding block mechanism.

8. The central venous catheter pad printing jig according to claim 6, wherein the elastic member is an extension spring, and the fixed end connecting member and the movable end connecting member are provided with draw hook holes matched with draw hooks at two ends of the extension spring.

9. The central venous catheter pad printing jig according to claim 8, wherein the fixed end connecting piece is a screw, and the hook pulling hole is formed in the end of the screw; the bottom plate tip be equipped with the screw hole that the screw matches, the axis of screw hole with the length direction of bottom plate is parallel and with the mounting groove intercommunication.

10. An automatic pad printing machine for central venous catheters comprises a rack, a multi-station workbench arranged on the rack, a first pad printing module used for pad printing information on catheters and intermediate joints, a second pad printing module used for pad printing information on epitaxial tubes, a detection module used for detecting pad printing effect and a blanking module, wherein the multi-station workbench comprises a feeding station, a first pad printing station, a second pad printing station and a blanking station, each station is provided with a jig according to any one of claims 1-9, and each jig sequentially passes through the feeding station, the first pad printing station, the second pad printing station and the blanking station in the working process; the first pad printing module corresponds to the first pad printing station, the second pad printing module corresponds to the second pad printing station, and the detection module and the blanking module correspond to the blanking station.

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