A packaging method and device for multiple suture threads

Abstract

The present invention relates to a product packaging method and device, and in particular to a packaging method and device for multiple suture needles and threads. It includes a packaging platform, a base, a driving mechanism, a supporting mechanism, a moving mechanism and a controller assembly. A servo motor or a stepping motor drives two moving mechanisms. The moving mechanism includes a bearing plate, a guide rod and a top block. The inner ring guide rod and the outer ring guide rod are arranged on different bearing plates. The eccentric wheel is driven by the motor to rotate, and the distance between the outer edge of the eccentric wheel and the motor output shaft repeats the rule of gradually moving away and then gradually approaching, so that the bearing plate can be lifted and moved quickly and accurately. The inner ring guide rod rises first, and the outer ring guide rod rises after the winding is completed. The outer ring guide rod can avoid collision with the outer ring guide rod during winding. The device has a compact structure, small size, low cost, stable operation, strong practicality, convenient operation, and improved production efficiency.

Description

Technical Field

[0001] The invention relates to a product packaging method and device, in particular to a packaging method and device for multiple suture needles and threads. Background Art

[0002] A plastic packaging box is used for packaging multiple suture needles and threads. The middle area is a fixed needle groove and the surrounding areas are wire grooves. In order to coil multiple suture threads in the narrow wire groove and prevent the suture threads from being stuck by the inner and outer edges of the packaging box, it is necessary to set a plurality of surrounding fixed guide rods on the packaging platform. These guide rods are distributed on the inner and outer circles of the wire groove. The suture threads will spread out after being wound along the outer side of the inner circle guide rods. The outer circle guide rods play a blocking role and confine the suture threads in the wire groove. However, the outer circle guide rods collide and hinder the winding. At the same time, it is purely manual operation, slow speed and low production efficiency. In order to solve these problems, these guide rods need to be controlled by a lifting mechanism. The lifting mechanisms used in existing lifting technologies include: sliding nut screw lifting mechanism, gear chain lifting mechanism, hydraulic lifting mechanism, parallelogram lifting mechanism, etc. Among them, the sliding nut and screw lifting mechanism has smooth lifting operation, but the lifting efficiency is low; the parallelogram lifting mechanism is widely used in elevators, but due to its structural limitations, the lifting stability is poor; the gear chain lifting mechanism and the hydraulic lifting mechanism have smooth operation, but the cost is high and the installation and maintenance are complicated. Summary of the invention

[0003] The purpose of the present invention is to solve the above problem and provide a packaging method and device for multiple suture needles and threads. The method and device can control the inner and outer ring guide rods to rise and fall quickly in steps, with high precision and simple operation, thus improving production efficiency.

[0004] According to the purpose of the present invention, a method for packaging multiple suture needles and threads includes: positioning the bottom plate of a multi-needle packaging box on a packaging platform, controlling a driving mechanism to push a moving mechanism from a low position to a high position so that an inner circle guide rod extends out of the box; then fixing multiple needles with threads in the needle fixing grooves in turn, and winding multiple threads together along the outer side of the inner circle guide rod with a certain tension; then controlling the driving mechanism to keep the moving mechanism in a high position, and pushing another moving mechanism from a low position to a high position so that an outer circle guide rod extends out of the box; releasing the tension of the suture thread so that the suture thread remains between the inner circle guide rod and the outer circle guide rod, and buckling the cover plate of the multi-needle packaging box from top to bottom to the bottom plate and clamping it; finally, controlling the driving mechanism again so that the inner and outer circle guide rods are simultaneously reset under the action of gravity along with the first moving mechanism and the second moving mechanism, and are moved out of the packaging box.

[0005] The packaging device for multi-needle sutures according to the present invention comprises: a packaging platform, a base, a driving mechanism, a supporting mechanism, a moving mechanism and a controller assembly, characterized in that:

[0006] The driving mechanism includes a motor and an eccentric wheel connected to the output shaft of the motor, wherein the motor is a servo motor or a stepper motor, which is mounted on a base through a fixing block, and the distance between the outer edge of the eccentric wheel and the output shaft of the motor is repeated in a pattern of gradually getting farther and then getting closer, and the eccentric wheel can be a whole, or can be split into a first eccentric wheel and a second eccentric wheel;

[0007] The moving mechanism comprises a first moving mechanism and a second moving mechanism; the first moving mechanism comprises a first bearing plate, a plurality of first guide rods arranged around the first bearing plate, and a first top block at the lower portion of the first bearing plate; the second moving mechanism comprises a second bearing plate, a plurality of second guide rods arranged around the second bearing plate, and a second top block at the lower portion of the second bearing plate;

[0008] The first eccentric wheel corresponds to the first top block in the vertical direction, and the second eccentric wheel corresponds to the second top block in the vertical direction;

[0009] The second bearing plate has a cavity in the center thereof capable of accommodating the first top block, and the first bearing plate has a cavity capable of accommodating a plurality of second guide rods;

[0010] The first bearing plate and the second bearing plate are slidably arranged on a supporting mechanism, and the supporting mechanism is mounted on a base;

[0011] The packaging platform is installed on the top of the supporting mechanism;

[0012] The packaging platform has a cavity capable of accommodating the lifting of a plurality of first guide rods and a plurality of second guide rods;

[0013] The packaging platform is provided with a limiting device for positioning the packaging box.

[0014] Furthermore, the limiting device is a plurality of limiting pins arranged in a circumferential manner.

[0015] Furthermore, the limit pin on one side has a certain degree of freedom and can be adjusted in tightness by a spring screw.

[0016] Furthermore, the supporting mechanism is at least two optical axes, and the bearing plate is mounted on the optical axes through linear bearings. Preferably, the supporting mechanism is four optical axes.

[0017] Furthermore, the controller assembly includes a motor controller, a micro switch and corresponding contacts.

[0018] Furthermore, the micro switch is installed on the fixed block of the motor, the contact block is installed on the motor output shaft or is arranged on the eccentric wheel, and the edge of the contact block has a protrusion or a recess, corresponding to the position closest to and farthest from the motor output shaft of the outer side of the first eccentric wheel and the position farthest from the motor output shaft of the outer side of the second eccentric wheel.

[0019] The beneficial effects of the present invention are as follows: the packaging method and device of multiple suture needles and threads of the present invention drives the eccentric wheel to rotate through a motor, and the distance between the outer edge of the eccentric wheel and the motor output shaft repeats the rule of gradually moving away and then gradually approaching, so that the eccentric wheel pushes the top block to make the carrier plate move up and down. Since the motor is a servo motor or a stepper motor, the carrier plate can be moved up and down quickly and accurately. In particular, two moving mechanisms are controlled by one motor, and the inner ring guide rod and the outer ring guide rod are arranged in different moving mechanisms. The inner ring guide rod rises first, and the outer ring guide rod rises after the winding is completed, so that the outer ring guide rod can be avoided from bumping during winding. The device has a compact structure, small size, low cost, stable operation, strong practicality, convenient operation, and improved production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front schematic diagram of an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a driving mechanism according to an embodiment of the present invention;

[0022] Figure 3 A top view of an embodiment of the present invention.

[0023] 1-packaging platform, 2-base, 3-motor, 4-motor output shaft, 5-first eccentric wheel, 6-second eccentric wheel, 7-optical axis, 8-linear bearing, 9-first bearing plate, 10-second bearing plate, 11-first guide rod, 12-second guide rod, 13-first top block, 14-second top block, 15-micro switch, 16-contact block, 17-packaging box, 18-limit block, 19-spring screw, 20-fixed block DETAILED DESCRIPTION

[0024] To facilitate understanding of the present invention, the present invention is described more comprehensively below in conjunction with the accompanying drawings.

[0025] See also Figure 1 , Figure 2 The motor 3 is mounted on the base 2 through a fixing block 20, and the motor 3 is a servo motor or a stepping motor; the motor output shaft 4 is connected to the first eccentric wheel 5 and the second eccentric wheel 6, and the distance between the outer edge of the eccentric wheel and the motor output shaft 4 gradually changes.

[0026] The micro switch 15 is mounted on the fixed block 20 , and the contact block 16 is provided with three notches, which respectively correspond to the closest and farthest positions of the outer side of the first eccentric wheel 5 from the motor output shaft 4 and the farthest position of the outer side of the second eccentric wheel 6 from the motor output shaft 4 .

[0027] See also Figure 1 , Figure 2 and Figure 3 , a plurality of first guide rods 11 are arranged around the first carrier plate 9, and a plurality of second guide rods 12 are arranged around the second carrier plate 10; the first carrier plate 9 is fixedly connected to the first top block 13 at the bottom, and the second carrier plate 10 is fixedly connected to the first top block 14 at the bottom; the four corners of the first carrier plate 9 and the second carrier plate 10 are respectively embedded in the linear bearings 8, and then slidably connected to the optical axis 7. The first carrier plate 9 is above the second carrier plate 10.

[0028] The first eccentric wheel 5 corresponds to the first top block 13 in the vertical direction, and the second eccentric wheel 6 corresponds to the second top block 14 in the vertical direction.

[0029] The optical axis 7 is fixedly mounted on the base 2 , and the top of the optical axis 7 is fixedly connected to the four corners of the packaging platform 1 .

[0030] A plurality of limit blocks 18 are arranged around the packaging platform 1 for positioning the packaging box 17, wherein the limit block on one side can be adjusted in tightness by a spring screw 19; a cavity capable of accommodating the lifting of a plurality of first guide rods 11 and second guide rods 12 is provided in the packaging platform 1.

[0031] The above embodiment expresses an implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A packaging device for multiple suture needles and threads, comprising a packaging platform, a base, a driving mechanism, a supporting mechanism, a moving mechanism and a controller assembly, characterized in that: The driving mechanism includes a motor and an eccentric wheel connected to the output shaft of the motor. The motor is a servo motor or a stepper motor, which is mounted on the base through a fixing block. The distance between the outer edge of the eccentric wheel and the output shaft of the motor is repeated in a pattern of gradually getting farther and then getting closer. The eccentric wheel is a whole, or is split into a first eccentric wheel and a second eccentric wheel. The moving mechanism comprises a first moving mechanism and a second moving mechanism, wherein the first moving mechanism comprises a first bearing plate, a plurality of first guide rods arranged around the first bearing plate, and a first top block located at the lower part of the first bearing plate, and the second moving mechanism comprises a second bearing plate, a plurality of second guide rods arranged around the second bearing plate, and a second top block located at the lower part of the second bearing plate; The first eccentric wheel corresponds to the first top block in the vertical direction, and the second eccentric wheel corresponds to the second top block in the vertical direction; The second bearing plate has a cavity in the center thereof capable of accommodating the first top block, and the first bearing plate has a cavity capable of accommodating a plurality of second guide rods; The first bearing plate and the second bearing plate are slidably arranged on a supporting mechanism, and the supporting mechanism is mounted on a base; The packaging platform is installed on the top of the supporting mechanism; The packaging platform has a cavity capable of accommodating the lifting and lowering of a plurality of first guide rods and a plurality of second guide rods; The packaging platform is provided with a limiting device for positioning the packaging box; The supporting mechanism is at least two optical axes, and the first bearing plate and the second bearing plate are mounted on the optical axes through linear bearings; The limiting device is a plurality of limiting pins arranged in a circumferential manner.

2. A packaging device for multiple suture threads as claimed in claim 1, characterized in that: The supporting mechanism comprises four optical axes.

3. A packaging device for multiple suture threads as claimed in claim 1, characterized in that: The limiting pin on one side of the limiting device has a certain degree of freedom, and the tightness can be adjusted by a spring screw.

4. A packaging device for multiple suture threads as claimed in claim 1, characterized in that: The controller assembly includes a motor controller, a micro switch and corresponding contacts.

5. A packaging device for multiple suture threads as claimed in claim 4, characterized in that: The micro switch is mounted on the fixed block of the motor, and the contact block is mounted on the motor output shaft or arranged on the eccentric wheel. The edge of the contact block has a protrusion or a notch, which corresponds to the position closest to and the position farthest from the motor output shaft on the outer side of the first eccentric wheel and the position farthest from the motor output shaft on the outer side of the second eccentric wheel.

6. A method for packaging a plurality of suture threads, using a packaging device for a plurality of suture threads as claimed in any one of claims 1 to 5, characterized in that: First, position the bottom plate of the multi-needle packaging box on the packaging platform, control the driving mechanism, and push a moving mechanism from a low position to a high position to make the inner circle guide rod extend from the box; then fix multiple needles with threads in the fixed needle grooves in turn, and wind the multiple threads together along the outer side of the inner circle guide rod with a certain tension; then control the driving mechanism to keep the moving mechanism in a high position, and push another moving mechanism from a low position to a high position to make the outer circle guide rod extend from the box; release the tension of the suture thread to keep the suture thread between the inner circle guide rod and the outer circle guide rod, and buckle the cover plate of the multi-needle packaging box from top to bottom to the bottom plate and clamp it; finally, control the driving mechanism again to make the inner and outer circle guide rods reset simultaneously with the first moving mechanism and the second moving mechanism under the action of gravity and move them out of the packaging box.

Images