Medical catheter side wall hole cutting edge fillet forming mechanism

Abstract

The utility model discloses a medical catheter side wall hole cutting edge fillet forming mechanism which comprises a base, a needle-shaped bottom die, a softening assembly and a punching assembly. The needle-shaped bottom die, the softening assembly and the punching assembly are installed on the base and matched with one another. The needle-shaped bottom die extends front and back, and a receding groove is formed in the upper surface of the needle-shaped bottom die. The softening assembly comprises an air blowing cylinder located above the needle-shaped bottom die and an air blowing driving device which is installed on the base and can be used for driving the air blowing cylinder to move towards the needle-shaped bottom die. The punching assembly comprises a punch located above the needle-shaped bottom die and matched with the receding groove and a punching driving device installed on the base and used for driving the punch to move up and down. The punch is vertically through, and the lower end of the punch is a punching part; the width of the punching part is gradually increased from bottom to top, and the periphery of the punching part is in arc transition. According to the medical catheter punching device, the needle-shaped bottom die, the softening assembly and the punching assembly are matched, so that the peripheral edge of a punched through hole can be bent inwards to form a round corner when the punching head punches a medical catheter, and the skin is prevented from being scratched.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical catheter processing technical field, concretely relates to a medical catheter side wall hole cutting edge fillet forming mechanism. BACKGROUND

[0002] Medical catheter is an important medical instrument, is mainly used for connecting human body cavity etc.

[0003] In order to facilitate the introduction of medical catheter into the body after the liquid, generally needs to set up on the side wall of medical catheter and open the through hole, so that liquid introduction.

[0004] However, for the above-mentioned plastic catheter cutter through hole device, it still has some shortcomings, for example: although it can utilize cutter to cut the hole of plastic catheter, so as to punch out the through hole on plastic catheter.

[0005] Therefore, the prior art needs to be improved. UTILITY MODEL CONTENTS

[0006] In view of the above problems existing in the prior art, the utility model aims at providing a medical catheter side wall hole cutting edge fillet forming mechanism, which can make the four edges of the punched through hole inwardly curved into a round corner by the cooperation of the needle-shaped bottom die, the softening assembly and the punching assembly when cutting the hole of the medical catheter, so as to avoid the skin scratch caused by the sharpness of the four edges of the through hole.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is:

[0008] The utility model provides a kind of medical catheter side wall hole cutting edge fillet forming mechanism, including base and respectively installed on the base and mutually cooperate needle-shaped bottom die, softening component and punching assembly;The needle-shaped bottom die extends forward and backward and is provided with a let slot on its upper surface;The softening component includes a gas blowing cylinder located above the needle-shaped bottom die and a gas blowing drive device mounted on the base and used to drive the gas blowing cylinder to move towards the needle-shaped bottom die;The punching assembly includes a punch located above the needle-shaped bottom die and cooperating with the let slot and a punching drive device mounted on the base and used to drive the punch to move up and down;The punch is through up and down, and its lower end is a punching part;The width of the punching part gradually increases from bottom to top, and its periphery is arc transition;The needle-shaped bottom die can be used to set the medical catheter to be punched;The softening component can use the gas blowing cylinder to blow hot air on the medical catheter on the needle-shaped bottom die to soften it;The punching assembly can use the punch to punch the softened part of the medical catheter, and when a through hole is punched out, the periphery of the through hole can form a fillet using the punching part to avoid scratching the skin.

[0009] Further, the gas blowing drive device includes a gas blowing front-rear cylinder fixed on the base and a gas blowing slider movably mounted on the base and connected with the output shaft of the gas blowing front-rear cylinder at the rear end;The gas blowing cylinder is connected with the front end of the gas blowing slider. Through the above arrangement, the gas blowing slider can be driven by the gas blowing front-rear cylinder to move forward and backward, so that the gas blowing cylinder can be moved forward and backward synchronously.

[0010] Further, the gas blowing drive device further includes a gas blowing rotary cylinder, a gear and a rack;The gas blowing cylinder is in the shape of "L";The gas blowing rotary cylinder is fixed on the gas blowing slider;The gear is rotatably mounted on the gas blowing slider and connected with the horizontal end of the gas blowing cylinder at the front end;The rack is movably mounted on the output shaft of the gas blowing rotary cylinder and engaged with the gear. Through the above arrangement, the gas blowing cylinder can be conveniently driven by the gas blowing rotary cylinder to rotate.

[0011] Further, the punching drive device includes a punching up-down cylinder fixed on the base and connected with the punch at the output shaft, so that the punching up-down cylinder can conveniently and quickly drive the punch to move up and down.

[0012] Further, it further includes a bottom die up-down cylinder and a bottom die moving block;The bottom die up-down cylinder is mounted on the base;The bottom die moving block is movably mounted on the output shaft of the bottom die up-down cylinder;The needle-shaped bottom die is connected with the front end of the bottom die moving block. Through the above arrangement, the bottom die up-down cylinder can conveniently drive the bottom die moving block to move up and down, so that the needle-shaped bottom die can be moved up and down synchronously.

[0013] Further, the bottom die rotating motor and the main driving cylinder are further included; the bottom die rotating motor is installed on the bottom die moving block and the output shaft of the bottom die rotating motor is connected with the needle-shaped bottom die; two of the letting-position grooves are sequentially arranged on the needle-shaped bottom die and are respectively arranged on the upper and lower sides of the needle-shaped bottom die; the base includes a fixed plate and a movable plate which is movably installed on the fixed plate; the main driving cylinder is installed on the fixed plate and the output shaft of the main driving cylinder is connected with the movable plate; the needle-shaped bottom die and the upper and lower cylinders are both installed on the fixed plate; the air blowing driving device and the punching driving device are both installed on the movable plate. Through the above arrangement, the needle-shaped bottom die can be conveniently driven to rotate, and two through holes can be punched on a medical catheter by cooperating with other structures.

[0014] Further, the limiting block is further included; the limiting block is installed on the fixed plate and the top surface of the limiting block has a limiting groove; the needle-shaped bottom die is correspondingly arranged in the limiting groove. Through the above arrangement, after the medical catheter is arranged on the needle-shaped bottom die, the limiting groove can be used to support the medical catheter, so as to facilitate subsequent punching.

[0015] The beneficial effects of the utility model are as follows:

[0016] The needle-shaped bottom die, the softening assembly and the punching assembly are matched, the punching part is arranged as wide at the top and narrow at the bottom and the periphery is arranged as an arc transition, so that the punch can drive the softened through-hole edge into the medical catheter by the periphery of the punching part when the medical catheter is punched (i.e. the hole is cut), so that the periphery of the through hole is bent inward and a round corner is formed, so as to avoid the skin being scratched due to the sharpness of the periphery of the through hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic diagram of the utility model Figure 1 ;

[0018] Figure 2 is the overall structure schematic diagram of the utility model Figure 2 ;

[0019] Figure 3 is the overall structure schematic diagram of the utility model Figure 3 ;

[0020] Figure 4 is the softening assembly schematic diagram of the utility model

[0021] Figure 5 is the local structure schematic diagram of the utility model

[0022] Figure 6 is the structure schematic diagram of the needle-shaped bottom die and the punch of the utility model.

[0023] Reference signs

[0024] 1, base; 101, fixed plate; 102, movable plate;

[0025] 2, needle-shaped bottom die; 21, clearance groove;

[0026] 3, softening assembly; 31, air blowing cylinder; 32, air cylinder before and after air blowing; 33, air blowing sliding block; 34, air blowing rotary cylinder; 35, gear; 36, rack;

[0027] 4, punching assembly; 41, punch; 411, punching part; 42, punching up-down cylinder;

[0028] 5, bottom die up-down cylinder;

[0029] 6, bottom die moving block;

[0030] 7, bottom die rotary motor;

[0031] 8, main drive cylinder;

[0032] 9, limiting block; 91, limiting groove. DETAILED DESCRIPTION

[0033] The utility model will be further described below in combination with the drawings and specific embodiments, and the following description is only exemplary and does not limit the protection scope of the utility model.

[0034] As shown in Figures 1-6 A medical catheter side wall hole edge rounding forming mechanism, comprising a base 1 and a needle-shaped bottom die 2, a softening assembly 3 and a punching assembly 4 installed on the base 1 respectively and cooperating with each other.

[0035] Among them, the needle-shaped bottom die 2 extends forward and backward and is provided with a clearance groove 21 on the upper surface.

[0036] As shown in Figures 1-4 The softening assembly 3 comprises an air blowing cylinder 31 located above the needle-shaped bottom die 2 and an air blowing driving device installed on the base 1 and used to drive the air blowing cylinder 31 to move towards the needle-shaped bottom die 2. Therefore, the movement of the air blowing cylinder 31 towards the needle-shaped bottom die 2 can be conveniently realized by the driving of the air blowing driving device.

[0037] As shown in Figures 1-6 The punching assembly 4 comprises a punch 41 located above the needle-shaped bottom die 2 and cooperating with the clearance groove 21 and a punching driving device installed on the base 1 and used to drive the punch 41 to move up and down; the punch 41 is through up and down and the lower end is a punching part 411; the width of the punching part 411 gradually increases from bottom to top and the periphery is arc-shaped transition. Therefore, the movement of the punch 41 can be conveniently realized by the punching driving device.

[0038] In use, the needle-shaped bottom die 2 can be used to set the medical catheter to be punched; the softening assembly 3 can use the air blower 31 to blow hot air on the medical catheter on the needle-shaped bottom die 2 to soften it; the punching assembly 4 can use the punch 41 to punch the softened part of the medical catheter, and when punching the through hole, the punching part 411 can be used to form a fillet around the through hole to avoid scratching the skin.

[0039] In summary, the needle-shaped bottom die 2, the softening assembly 3 and the punching assembly 4 are matched, and the punching part 411 is set to be wide at the top and narrow at the bottom and arc-shaped around, so that when the punch 41 punches the medical catheter (i.e. cuts the hole), the softened through hole edge can be driven into the medical catheter by the punching part 411 around, so that the through hole edge is bent inward and forms a fillet to avoid scratching the skin around the through hole due to sharpness.

[0040] As shown in Figures 1-5 , preferably, the air blowing driving device comprises an air outlet front and rear cylinder 32 fixed on the base 1 and an air blowing slider 33 movably installed on the base 1 and connected with the output shaft of the air outlet front and rear cylinder 32 at the rear end, and the air blowing cylinder 31 is connected with the front end of the air blowing slider 33. Therefore, through the above setting, the air blowing slider 33 can be driven by the air outlet front and rear cylinder 32 to move forward and backward, so that the air blowing cylinder 31 can be moved forward and backward synchronously, which is very convenient to use.

[0041] As shown in Figure 2 and Figure 4 , in addition, the air blowing driving device further comprises an air blowing rotary cylinder 34, a gear 35 and a rack 36; the air blowing cylinder 31 is in the shape of "L"; the air blowing rotary cylinder 34 is fixed on the air blowing slider 33; the gear 35 is rotatably installed on the air blowing slider 33 and connected with the rear end of the horizontal end of the air blowing cylinder 31 at the front end; the rack 36 is movably installed on the output shaft of the air blowing rotary cylinder 34 and engaged with the gear 35. Therefore, the air blowing cylinder 31 is connected with the air blowing slider 33 through the gear 35. Through the above setting, the air blowing cylinder 31 can be conveniently driven to rotate by the air blowing rotary cylinder 34. Since there are many parts in the device, if the vertical end of the air blowing cylinder 31 is converted to a horizontal state by rotating, it will not be easy to hit the parts below when moving forward and backward.

[0042] As for the air blowing cylinder 31, it only needs to be connected with a gas supply device that can provide hot air, so that it can blow out hot air.

[0043] As shown in Figure 1As shown, the punching driving device comprises a punching up-down cylinder 42 fixed on the base 1 and having an output shaft connected with the punch 41 downward, so that the punch 41 can be conveniently and quickly driven to move up and down by the punching up-down cylinder 42.

[0044] As shown in Figure 1 and Figure 5 , the bottom die up-down cylinder 5 is installed on the base 1, and the bottom die moving block 6 is movably installed on the output shaft of the bottom die up-down cylinder 5. The needle-shaped bottom die 2 is connected to the front end of the bottom die moving block 6, that is, the needle-shaped bottom die 2 is connected to the base 1 through the bottom die moving block 6 and the bottom die up-down cylinder 5. Through the above arrangement, the bottom die up-down cylinder 5 can conveniently drive the bottom die moving block 6 to move up and down, thereby synchronously driving the needle-shaped bottom die 2 to move up and down, so as to meet different use requirements.

[0045] As shown in Figure 1 and Figure 5As shown, preferably, it also includes a bottom mold rotary motor 7 and a main drive cylinder 8. The bottom mold rotary motor 7 is mounted on the bottom mold moving block 6 and its output shaft is connected to the needle-shaped bottom mold 2. That is, the needle-shaped bottom mold 2 is connected to the bottom mold moving block 6 through the bottom mold rotary motor 7, and the needle-shaped bottom mold 2 can be rotated by the bottom mold rotary motor 7. Two clearance grooves 21 are provided on the needle-shaped bottom mold 2, which are arranged sequentially from front to back and located on the upper and lower sides of the needle-shaped bottom mold 2 respectively. The base 1 includes a fixed plate 101 and a movable plate 102 that can be moved back and forth on the fixed plate 101; the main drive cylinder 8 is mounted on the fixed plate 101 and its output shaft is connected to the movable plate 102, so that the movable plate 102 can be moved back and forth by the main drive cylinder 8. The needle-shaped bottom mold 2 and the bottom mold upper and lower cylinders 5 are both mounted on the fixed plate 101; the air blowing drive device and the punching drive device are both mounted on the movable plate 102. More specifically, the front and rear air-blowing cylinders 32, the air-blowing rotary motor, and the upper and lower punching cylinders 42 are all mounted on the movable plate 102. Therefore, with the above arrangement, when the main drive cylinder 8 moves the movable plate 102, it correspondingly drives the softening component 3 and the punching component 4 to move back and forth. In addition, in actual use, after the bottom mold rotary motor 7 drives the needle-shaped bottom mold 2 to rotate, different clearance grooves 21 can be exposed. For example, when the needle-shaped bottom mold 2 exposes the clearance groove 21 located at the front by rotating, the main drive cylinder 8 can drive the movable plate 102 to move forward a certain distance, so that the softening component 3 and the punching component 4 can cooperate with the clearance groove 21; when the needle-shaped bottom mold 2 exposes the clearance groove 21 located at the rear by rotating, the main drive cylinder 8 is used to drive the movable plate 102 to move backward a certain distance, so that the softening component 3 and the punching component 4 can cooperate with the clearance groove 21. The specific settings can be configured according to actual needs. It can be seen that by using the two relief grooves 21 on the needle-shaped bottom mold 2, and in conjunction with other structures, two through holes can be punched out on a medical catheter to meet different needs.

[0046] like Figure 1 As shown, it also includes a limiting block 9; the limiting block 9 is mounted on the fixing plate 101 and has a limiting groove 91 on its top surface; the needle-shaped bottom mold 2 is correspondingly inserted into the limiting groove 91, so that after the medical catheter is fitted into the needle-shaped bottom mold 2, the limiting groove 91 can be used to support it, so as to facilitate subsequent punching. In addition, since the needle-shaped bottom mold 2 can be easily adjusted up and down, by adjusting the up and down position of the needle-shaped bottom mold 2, the gap between the needle-shaped bottom mold 2 and the wall of the limiting groove 91 can be adjusted, so that the needle-shaped bottom mold 2 can be used for medical catheters with different wall thicknesses.

[0047] like Figure 1As shown in the embodiment, in order to improve production efficiency, the needle-shaped bottom die 2, the softening assembly 3 and the punching assembly 4 are respectively provided with two groups, so that the utility model can simultaneously process two medical catheters, and the processing efficiency is high.

[0048] The specific use principle of the utility model is introduced below, so as to understand the utility model:

[0049] Firstly, after positioning the equipment, the medical catheter to be punched is sleeved on the needle-shaped bottom die 2 through the feeding mechanism (not shown in the figure); next, the front end of the blowing cylinder 31 is moved to the upper side of the accommodation slot 21 by driving the blowing cylinder 31 to move forward, then the rack 36 is driven to move by driving the blowing rotation cylinder 34, so as to drive the gear 35 to rotate, finally the blowing cylinder 31 is driven to rotate, so that the front end of the blowing cylinder 31 is downwardly rotated to be opposite to the medical catheter to be punched; next, the medical catheter is blown by the blowing cylinder 31, so that the area to be punched of the medical catheter is softened by heat; next, the blowing cylinder 31 is reset after blowing; next, the punch 41 is driven to move downward by the punching up-down cylinder 42, until the punch 41 is inserted into the position of the accommodation slot 21, so that a through hole is formed at the corresponding position of the medical catheter, and the edges of the through hole are all formed with round corners downward, and the waste cut out by the punch 41 is stored in the inside of the punch 41 from the bottom of the punch 41, since the opening of the bottom of the punch 41 is small, the waste is not easy to automatically drop out of the hole, of course, after the subsequent punching of the plurality of medical catheters, if the waste in the inside of the punch 41 is full, the waste will be slowly discharged from the top of the punch 41 or can be directly taken out by manual operation; next, the punch 41 is reset, and the feeding mechanism takes out the medical catheter punched and sends it to the next process, and the new workpiece is simultaneously sent to the punch 41.

[0050] The utility model is not limited to the above-mentioned embodiments, if various modifications or deformations of the utility model do not deviate from the spirit and scope of the utility model, if these modifications and deformations belong to the claim and equivalent technical scope of the utility model, the utility model also intends to include these modifications and deformations.

Claims

1. A medical catheter side wall hole cutting edge rounding mechanism, characterized in that: it comprises a base and a needle-shaped bottom die, a softening assembly and a punching assembly which are respectively installed on the base and cooperate with each other; the needle-shaped bottom die is arranged in an extending manner and is provided with a clearance groove on its upper surface; the softening assembly comprises a blowing cylinder which is located above the needle-shaped bottom die and a blowing driving device which is installed on the base and can be used to drive the blowing cylinder to move towards the needle-shaped bottom die; the punching assembly comprises a punch which is located above the needle-shaped bottom die and cooperates with the clearance groove, and a punching driving device which is installed on the base and can be used to drive the punch to move up and down; the punch is through in an up-down direction and is provided with a punching part at its lower end; the width of the punching part gradually increases from bottom to top and its periphery is in an arc transition; the needle-shaped bottom die can be used to sleeve a medical catheter to be punched; the softening assembly can use the blowing cylinder to blow hot air on the medical catheter on the needle-shaped bottom die so as to soften the medical catheter; the punching assembly can use the punch to punch the softened part of the medical catheter, and when a through hole is punched out, the punch part can be used to form a round corner around the periphery of the through hole to avoid scratching the skin.

2. The medical catheter side wall hole cutting edge rounding mechanism according to claim 1, characterized in that: the blowing driving device comprises a blowing front-rear cylinder which is fixed on the base and a blowing sliding block which is movably installed on the base and is connected with an output shaft of the blowing front-rear cylinder at its rear end; the blowing cylinder is connected with the front end of the blowing sliding block.

3. The medical catheter side wall hole cutting edge rounding mechanism according to claim 2, characterized in that: the blowing driving device further comprises a blowing rotary cylinder, a gear and a rack; the blowing cylinder is in an "L" shape; the blowing rotary cylinder is fixed on the blowing sliding block; the gear is rotatably installed on the blowing sliding block and is connected with the horizontal end of the rear end of the blowing cylinder; the rack is movably installed on the output shaft of the blowing rotary cylinder and is engaged with the gear.

4. The medical catheter side wall hole cutting edge rounding mechanism according to claim 1, characterized in that: the punching driving device comprises a punching up-down cylinder which is fixed on the base and is connected with the punch at its output shaft.

5. The medical catheter side wall hole cutting edge rounding mechanism according to claim 1, characterized in that: it further comprises a bottom die up-down cylinder and a bottom die moving block; the bottom die up-down cylinder is installed on the base; the bottom die moving block is movably installed on the output shaft of the bottom die up-down cylinder; the needle-shaped bottom die is connected with the front end of the bottom die moving block.

6. The medical catheter side wall hole cutting edge rounding mechanism according to claim 5, characterized in that: it further comprises a bottom die rotary motor and a main driving cylinder; the bottom die rotary motor is installed on the bottom die moving block and is connected with the needle-shaped bottom die at its output shaft; two clearance grooves which are arranged in a front-rear direction and are respectively located on the upper and lower sides of the needle-shaped bottom die are arranged on the needle-shaped bottom die. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The base comprises a fixed plate and a movable plate movably installed on the fixed plate; the main driving cylinder is installed on the fixed plate and its output shaft is connected with the movable plate; the needle-shaped bottom die and the bottom die up-and-down cylinder are both installed on the fixed plate; the air blowing driving device and the punching driving device are both installed on the movable plate.

7. The medical catheter side wall hole cutting edge rounding mechanism of claim 6, wherein: Further comprising a limiting block; the limiting block is installed on the fixed plate and its top surface has a limiting groove; the needle-shaped bottom die is correspondingly penetrated in the limiting groove.

Images