CN216504310U - Core rod grinding device - Google Patents

Abstract

The utility model discloses a mandrel grinding device belonging to the field of medical instruments. The grinding device comprises: a grinding table, a mounting plate, a lifting bracket, a motor, a central shaft, a turntable and a mandrel clamp, and the mounting plate is vertically mounted on the grinding table , the lifting bracket is installed on the mounting plate and is located above the grinding table, the motor is installed on the lifting bracket and is located on the other side of the mounting plate, the upper end of the central shaft installed on the lifting bracket is connected with the motor through the conveyor belt, and the lower end of the central shaft is installed The turntable is provided with a mandrel clamp perpendicular to the grinding table, and the motor drives the central shaft to rotate so as to drive the mandrel clamp on the turntable to move to realize the grinding of the end face of the mandrel. The mandrel grinding device of the utility model has a simple structure, avoids technical problems such as difficult grinding with conventional cutting tools and easy deformation and damage of the mandrel, and can grind the end face of the mandrel after clamping the mandrel quickly and reliably.

Description

Core rod grinding device

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a mandrel grinding device.

Background

The indwelling needle comprises a needle head and a catheter, in the production procedure of the indwelling needle, one end of the catheter of the indwelling needle is firstly sleeved on a core rod of a fusion cutting machine, and then the catheter is fused and cut into a certain shape at the end part of the core rod by utilizing a mould. The end part of the core rod is abraded in the continuous use process to cause the fusion-cut end surface of the guide pipe to be uneven, so that burrs are generated on the guide pipe to cause product scrapping. The diameter of the core rod is usually less than 1mm, and the conventional cutting tool is difficult to grind, and the small-diameter core rod is easy to deform and damage due to grinding friction.

In order to solve the above problems, a simple and effective device capable of rapidly grinding qualified small-diameter core rods is needed, which is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems of difficult grinding of a cutting tool, easy damage of a core rod, low working efficiency and the like in the prior art, the core rod grinding device provided by the utility model has a simple structure, avoids the technical problems of difficult grinding of the conventional cutting tool, easy deformation and damage of the core rod and the like, and can quickly and reliably grind the end face of the core rod after clamping the core rod.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the utility model provides a core rod grinding device, which comprises: grind platform, mounting panel, lifting support, motor, center pin, carousel and plug anchor clamps, wherein, the mounting panel is installed perpendicularly grind bench, lifting support installs on the mounting panel and be located grind the top of platform, the motor is installed lifting support is last and be located the opposite side of mounting panel, preferred, the lifting support installs the center pin, the center pin perpendicular to grind the platform, the upper end of center pin pass through the conveyer belt with the motor is connected, install the lower extreme of center pin the carousel, the carousel is on a parallel with grind the platform, set up on the carousel plug anchor clamps, the plug anchor clamps perpendicular to grind the platform.

Preferably, the turntable is provided with a mounting hole for mounting the central shaft, and the mounting hole deviates from the center of the turntable.

Preferably, the end face of the turntable is provided with a clamp hole for installing a mandrel clamp, and the center line of the clamp hole is parallel to the center line of the installation hole.

Preferably, the jig holes are plural, and the plural jig holes are distributed on a circumference centering on a center of the turntable.

Preferably, the lower end of the mandrel holder is provided with at least three pawls projecting downward.

Preferably, the pawl is sleeved with a threaded sleeve, and the threaded sleeve is used for fastening the pawl.

Preferably, a belt pulley is arranged at the upper end of the central shaft, and the motor is connected with the belt pulley through the conveying belt.

Preferably, the position of the lifting bracket on the mounting plate is adjustable up and down.

Preferably, the grinding table is provided with grinding sand paper.

Preferably, the rotation stopping rod is arranged on the central shaft and comprises a horizontal rod and a vertical rod, one end of the horizontal rod is connected to the upper end of the central shaft, the other end of the horizontal rod is connected to the upper end of the vertical rod, and the lower end of the vertical rod is fixed to the mounting plate.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

the core rod grinding device provided by the utility model has a simple structure, avoids the technical problems that the conventional cutting tool is difficult to grind, the core rod is easy to deform and damage and the like, and can quickly and reliably grind the end face of the core rod after clamping the core rod.

Drawings

FIG. 1 is a perspective view of a mandrel mill;

FIG. 2 is a schematic structural view of a turntable;

FIG. 3 is a schematic view of the structure of the mandrel holder;

fig. 4 is a perspective view of the mandrel mill with a stopper rod.

Detailed Description

In order that those skilled in the art can better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the following specific examples, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1 to 4, the present invention provides a mandrel mill including: grinding table 1, mounting panel 2, motor 3, lifting support 4, carousel 5 and plug anchor clamps 6. Wherein, grinding table 1 is the workstation of horizontal setting, and it has grinding abrasive paper 8 to paste on the horizontal mesa of grinding table 1, and grinding abrasive paper 8 is the little fine abrasive paper of grit. The mounting panel 2 is installed perpendicularly on grinding table 1, and lifting support 4 installs on mounting panel 2 and is located grinding table 1's top, and motor 3 installs on lifting support 4 to be located mounting panel 2's opposite side. The lifting support 4 comprises a connecting arm 41 and a support disc 42, the connecting arm 41 is installed on the installation plate 2, and the support disc 42 is located right above the horizontal table surface of the grinding table 1. In order to adjust the height of the support disc 42 on the grinding table 1 up and down to adapt to the grinding of the core rods 7 with different heights, the mounting plate 2 is provided with the vertical long groove 21, the connecting arm 41 is mounted in the long groove 21, the mounting position of the lifting support 4 on the mounting plate 2 can be adjusted up and down, and the height of the support disc 42 on the grinding table 1 can be further adjusted up and down. Since the motor 3 is connected to the connecting arm 41, the motor 3 can be adjusted up and down together with the lifting bracket 4. A center hole 421 vertically penetrating from top to bottom is provided in the holder plate 42 of the lifting holder 4, and the center shaft 40 is attached to the center hole 421, and the center shaft 40 is perpendicular to the polishing table 1. The pulley 32 is attached to the upper end of the center shaft 40, and the turntable 5 is provided to the lower end of the center shaft 40. In order to adjust the position of the turntable 5 at the lower end of the central shaft 40 up and down, a mounting hole 52 may be provided on the turntable 5 for mounting the central shaft 40 and making the turntable 5 parallel to the polishing table 1. The motor 3 drives the belt pulley 32 to rotate through the transmission belt 31 so as to drive the central shaft 40 to rotate, and the central shaft 40 drives the turntable 5 at the lower end thereof to rotate. The end face of the turntable 5 is provided with a jig hole perpendicular to the end face, the jig hole is a jig through hole 51 vertically penetrating up and down, the mandrel holder 6 is mounted in the jig through hole 51 so that the mandrel holder 6 is perpendicular to the polishing table 1, and the mandrel holder 6 can hold the mandrel 7 so that the mandrel 7 is perpendicular to the polishing table 1. In order to sufficiently polish the lower end surface of the mandrel 7 and flatten the end surface, the jig through hole 51 may be provided on the turntable 5 at a distance from the mounting hole 52 of the central shaft 40, and the center line of the jig through hole 51 and the center line of the mounting hole 52 may be kept parallel, thereby ensuring that the mandrel jig 6 mounted in the jig through hole 51 is parallel to the central shaft 40 and both are perpendicular to the polishing table 1. When the motor 3 drives the central shaft 40 to rotate so as to drive the turntable 5 to rotate, the mandrel 7 clamped in the mandrel clamp 6 can fall down and then contact the grinding abrasive paper 8 on the grinding table 1, and accordingly circular motion can be carried out in a large range, so that the lower end face of the mandrel 7 can be fully ground.

Mounting holes 52 may be provided at locations other than the center of disk 5 for mounting center shaft 40, such that the centers of mounting holes 52 are offset from the center of disk 5 by a distance a of about 5-20 mm. In the case where the turntable 5 is kept parallel to the polishing table 1, when the turntable 5 is rotated by the center shaft 40, the lower end surface of the core rod 7 is further sufficiently polished at different positions of the abrasive paper 8 on the horizontal table surface of the polishing table 1 in each rotation.

In order to improve the working efficiency, the number of the fixture through holes 51 is plural, and specifically six fixture through holes 51 may be provided, and the six fixture through holes 51 are distributed on a circumference centering on the center of the turntable 5, and specifically are uniformly arranged on the end face of the turntable 5 in a circumferential array, that is, the fixture through holes 51 are uniformly distributed on a circumference centering on the center of the turntable 5, and when the number of the fixture through holes 51 is larger, the fixture through holes may be distributed on a circumference centering on the center of the turntable 5 in two or more circles. The mandrel clamps 6 are arranged in each clamp through hole 51, each mandrel clamp 6 is perpendicular to the grinding table 1, and the lower end of the mandrel 7 clamped in each mandrel clamp 6 is perpendicular to the horizontal table surface of the grinding table 1, so that the lower end surface of each mandrel 7 can be uniformly and fully ground when the turntable 5 rotates to drive the clamp 6 to do circular motion so as to grind the lower end surface of the mandrel 7.

The lower end of the mandrel holder 6 is provided with at least three pawls 61 which extend downwards, the three pawls 61 are uniformly distributed at the lower end of the mandrel holder 6 in a circumferential manner with the center of the mandrel holder 6 as the center, and the tail ends of the pawls can be slightly opened outwards, so that the mandrel 7 can be conveniently loaded and clamped in the cavity formed between the three pawls 61. In order to prevent the core rod 7 from loosening due to external grinding force during grinding, an external thread 611 is provided at the lower end of the core rod clamp 6, a threaded sleeve 612 is sleeved on the three pawls 61, the internal thread of the threaded sleeve 612 is matched with the external thread 611, and when the threaded sleeve 612 is screwed downwards, the threaded sleeve 612 presses the pawls 61 so that the cavities of the pawls 61 shrink to clamp the core rod 7.

In addition, in order to further ensure that the central shaft 40 is always perpendicular to the grinding table 1 so as to prevent the turntable 5 from being deviated and inclined due to external force, a rotation stopping rod 9 may be provided on the central shaft 40, specifically, the rotation stopping rod 9 may be provided at the end of the upper end of the central shaft 40. The rotation stopping rod 9 is provided with a horizontal rod 91 and a vertical rod 92 which are connected at a right angle, a hole at the free end of the horizontal rod 91 is sleeved at the tail end of the upper end of the central shaft 40, the other end of the horizontal rod 91 is connected with the vertical rod 92 at a right angle, and the lower end of the vertical rod 92 is fixed on the mounting plate 2. This is so that the center axis 40 can be kept perpendicular to the polishing table 1 even if an external force is applied.

Compared with the prior art, the core rod grinding device has a simple structure, avoids the technical problems that the conventional cutting tool is difficult to grind and easily damages the core rod, and can quickly and reliably clamp the core rod and then fully grind the end face of the core rod.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A mandrel grinding device, comprising: Grinding table, mounting plate, lifting bracket, motor, central shaft, turntable and mandrel clamp, wherein the mounting plate is vertically mounted on the grinding table, and the lifting bracket is mounted on the mounting plate and located on the Above the grinding table, the motor is installed on the lifting bracket and is located on the other side of the mounting plate, characterized in that the central axis is installed on the lifting bracket, and the central axis is perpendicular to the grinding The upper end of the central shaft is connected to the motor through a conveyor belt, the lower end of the central shaft is installed with the turntable, the turntable is parallel to the grinding table, and the mandrel clamp is arranged on the turntable. The mandrel holder is perpendicular to the grinding table. 2 . The mandrel grinding device according to claim 1 , wherein a mounting hole for mounting the central shaft is provided on the turntable, and the mounting hole is deviated from the center of the turntable. 3 . 3 . The mandrel grinding device according to claim 2 , wherein a clamp hole for installing a mandrel clamp is provided on the end surface of the turntable, and the center line of the clamp hole is parallel to the center line of the installation hole. 4 . . 4 . The mandrel grinding device according to claim 3 , wherein there are a plurality of the clamp holes, and the plurality of clamp holes are distributed on the circumference centered on the center of the turntable. 5 . 5 . The mandrel grinding device according to claim 3 , wherein the lower end of the mandrel clamp is provided with at least three downwardly protruding pawls. 6 . 6 . The mandrel grinding device according to claim 5 , wherein a screw sleeve is sleeved on the ratchet pawl, and the screw sleeve is used to fasten the ratchet pawl. 7 . 7 . The mandrel grinding device according to claim 1 , wherein the upper end of the central shaft is provided with a pulley, and the motor is connected to the pulley through the conveyor belt. 8 . 8 . The mandrel grinding device according to claim 1 , wherein the position of the lifting bracket on the mounting plate can be adjusted up and down. 9 . 9 . The mandrel grinding device according to claim 1 , wherein grinding sandpaper is arranged on the grinding table. 10 . 10 . The mandrel grinding device according to claim 1 , wherein an anti-rotation rod is provided on the central axis, the anti-rotation rod comprises a horizontal rod and a vertical rod, and one end of the horizontal rod is connected to the The upper end of the central shaft and the other end are connected with the upper end of the vertical rod, and the lower end of the vertical rod is fixed on the mounting plate.

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