Trocar and casing feeding mechanism thereof

Abstract

The trocar comprises an upper connecting part and a needle part, the lower portion of the upper connecting part is connected with the needle part, the periphery of the lower end of the needle part is provided with a lower opening part used for opening a cannula, the left side face and the right side face of the tail end of the lower opening part are chamfered, and the left side face, the right side face and the bottom face form an inverted trapezoid. The trocar is characterized in that a lower distraction part is arranged on the periphery of the lower end of the trocar body, the width of the bottom face of the lower distraction part is smaller than the width of the middle of the lower distraction part, an upper distraction part is arranged on the periphery of the upper connecting part, the upper distraction part and the lower distraction part are separated, and the left side face and the right side face of the tail end of the upper distraction part are chamfered. The left side face, the right side face and the bottom face form an inverted trapezoid, passing sleeves can be expanded conveniently, the sleeve feeding mechanism is reasonable in structural design, the sleeves can be fed from bottom to top, the motor control accuracy is high, the feeding speed is high, and the production requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of battery and capacitor production equipment, specifically to a cannula needle and its cannula feeding mechanism. Background Technology

[0002] After batteries and capacitors are manufactured, a plastic sleeve printed with positive and negative markings, the manufacturer's information, and other information needs to be fitted onto the outer periphery of the casing. The machine that performs this processing is called a sleeve-fitting machine. The sleeve needle structure of existing sleeve-fitting machines is as follows: Figure 1 As shown, the cannula needle relies on its slender needle to open and guide the cannula, but the disadvantage is that it cannot open the cannula to a larger extent, which is not conducive to the subsequent battery installation. Moreover, the existing cannula feeding mechanism has a complex structural design, and the feeding speed and feeding accuracy need to be further improved. Utility Model Content

[0003] To address the aforementioned shortcomings of existing technologies, the technical problem this utility model aims to solve is how to optimize the cannula needle structure and the cannula feeding mechanism. The specific technical solution is as follows:

[0004] A cannula needle includes an upper connecting part and a needle part. The needle part is connected to the lower part of the upper connecting part. The lower end of the needle part is provided with a lower supporting part for opening the cannula. The left and right sides of the end of the lower supporting part are chamfered. The left and right sides and the bottom surface form an inverted trapezoid. The bottom surface width of the lower supporting part is smaller than the middle width of the lower supporting part. The upper connecting part is provided with an upper supporting part. The upper supporting part and the lower supporting part are separated. The left and right sides of the end of the upper supporting part are chamfered.

[0005] As a preferred embodiment of the cannula needle of this utility model, the front and rear sides of the lower support portion are chamfered, and the left, right, front, and rear sides of the end of the lower support portion form a flat opening.

[0006] A sleeve feeding mechanism includes a fixed base, a base plate, a motor base, a motor, a first feeding wheel, a second feeding wheel, and the aforementioned sleeve needle. The base plate is installed in front of the fixed base, the sleeve needle is installed on the front side below the base plate, the motor base is installed on the rear side below the base plate, and the motor is installed behind the motor base. The motor drives the first feeding wheel to rotate, and the sleeve needle is located between the first feeding wheel and the second feeding wheel.

[0007] As a preferred embodiment of the sleeve feeding mechanism of this utility model, it also includes a hinge seat, a movable block, and a spring. The second feeding wheel is rotatably mounted on the movable block. The hinge seat is hingedly mounted below the base plate. The movable block is mounted on the hinge seat. One end of the spring abuts against the base plate and the other end abuts against the hinge seat. The spring drives the second feeding wheel to approach the first feeding wheel.

[0008] As a preferred embodiment of the sleeve feeding mechanism of this utility model, the sleeve needle is suspended in the center of the bearing seat, and a limit rod is placed above the sleeve needle to hold it in place.

[0009] As a preferred embodiment of the sleeve feeding mechanism of this utility model, a sensor for detecting sleeves is installed above the base plate.

[0010] Beneficial effects:

[0011] (1) The cannula needle has a novel structural design. The lower periphery of the needle part is provided with a lower support section. The left and right sides of the end of the lower support section are chamfered, and the left, right and bottom sides form an inverted trapezoid, which makes it easy to open the cannula that has passed through.

[0012] (2) The casing feeding mechanism has a reasonable structural design, which can realize the casing moving from bottom to top for feeding. The motor control is highly accurate and the feeding speed is fast, which meets the production needs. Attached Figure Description

[0013] Figure 1 It is a 3D diagram of existing technology;

[0014] Figure 2 This is a perspective view of the trocar needle of this utility model;

[0015] Figure 3 This is a front view of the cannula needle of this utility model;

[0016] Figure 4 This is a side view of the cannula needle of this utility model;

[0017] Figure 5 This is a perspective view of the sleeve feeding mechanism of this utility model;

[0018] Figure 6 This is an exploded view of the sleeve feeding mechanism of this utility model;

[0019] Figure 7 This is a cross-sectional view of the sleeve feeding mechanism of this utility model. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 2-4 As shown, a cannula needle includes an upper connecting part 1 and a needle part 2. The needle part 2 is connected to the lower part of the upper connecting part 1. The lower end of the needle part 2 is provided with a lower opening part 3 for opening the cannula. The left side 3a and right side 3b of the end of the lower opening part 3 are chamfered. The left side 3a, right side 3b and bottom side 3c form an inverted trapezoid. The bottom width A of the lower opening part 3 is smaller than the middle width B of the lower opening part. The upper connecting part 1 is provided with an upper opening part 4, which is separated from the lower opening part 3. The left and right side faces of the end of the upper opening part 4 are chamfered. In addition, the front side 3d and rear side 3e of the lower opening part 3 are chamfered. The left side 3a, right side 3b, front side 3d and rear side 3e of the end of the lower opening part 3 form a flat opening to facilitate the cannula being opened after insertion.

[0024] like Figures 5-7 As shown, a sleeve feeding mechanism includes a fixed base 5, a base plate 6, a motor base 7, a motor 8, a first feeding wheel 9, a second feeding wheel 10, and the aforementioned sleeve needle. The base plate 6 is installed in front of the fixed base 5, the sleeve needle is installed on the front side below the base plate 5, the motor base 7 is installed on the rear side below the base plate 6, and the motor 8 is installed behind the motor base 7. The motor 8 drives the first feeding wheel 9 to rotate. The sleeve needle is located between the first feeding wheel 9 and the second feeding wheel 10. When the first feeding wheel 9 rotates, it rubs against the second feeding wheel 10, driving the sleeve to move upward. The sleeve is stretched open when it passes through the sleeve needle.

[0025] The sleeve feeding mechanism also includes a hinge seat 11, a movable block 12, and a spring 13. The second feeding wheel 10 is rotatably mounted on the movable block 12. The hinge seat 11 is hingedly mounted below the base plate 6. The movable block 12 is mounted on the hinge seat 11. One end of the spring 13 abuts against the base plate 6, and the other end abuts against the hinge seat 11. The spring 13 drives the second feeding wheel 10 to approach the first feeding wheel 9, thereby rubbing against the sleeve. This arrangement of the hinge seat 11, movable block 12, and spring 13 facilitates clockwise rotation of the hinge seat 11 to replace the new sleeve. In addition, the sleeve needle is suspended in the center of the bearing seat 14. A limit rod 15 is positioned directly above the sleeve needle to hold it in place. The sleeve passes through the gap between the sleeve needle and the bearing seat 14. The limit rod 15 prevents the sleeve needle from moving upwards as the sleeve moves upwards. A sensor 16 for detecting the sleeve is mounted above the base plate.

[0026] The above description is a further detailed explanation of the present utility model in conjunction with specific preferred embodiments. It should not be considered that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the protection scope of the present utility model.

Claims

1. A cannula needle, comprising an upper connecting portion and a needle portion, wherein the needle portion is connected below the upper connecting portion, characterized in that: The lower periphery of the needle part is provided with a lower support portion for spreading the sleeve. The left and right sides of the end of the lower support portion are chamfered, and the left, right and bottom sides form an inverted trapezoid. The bottom width of the lower support portion is smaller than the middle width of the lower support portion. The upper connecting part is provided with an upper support portion. The upper support portion and the lower support portion are separated. The left and right sides of the end of the upper support portion are chamfered.

2. The cannula needle according to claim 1, characterized in that: The front and rear sides of the lower support are chamfered, and the left, right, front, and rear sides of the end of the lower support form a flat opening.

3. A casing feeding mechanism, characterized in that: It includes a fixed base, a base plate, a motor base, a motor, a first feeding wheel, a second feeding wheel, and a cannula needle as described in claim 1 or 2. The base plate is installed in front of the fixed base, the cannula needle is installed on the front side below the base plate, the motor base is installed on the rear side below the base plate, and the motor is installed behind the motor base. The motor drives the first feeding wheel to rotate, and the cannula needle is located between the first feeding wheel and the second feeding wheel.

4. The sleeve feeding mechanism according to claim 3, characterized in that: It also includes a hinge seat, a movable block, and a spring. The second feeding wheel is rotatably mounted on the movable block. The hinge seat is hingedly mounted below the base plate. The movable block is mounted on the hinge seat. One end of the spring abuts against the base plate and the other end abuts against the hinge seat. The spring drives the second feeding wheel to approach the first feeding wheel.

5. A sleeve feeding mechanism according to claim 3, characterized in that: The cannula needle is suspended in the center of the bearing housing, and a limit rod is positioned directly above the cannula needle to hold it in place.

6. A sleeve feeding mechanism according to claim 3, characterized in that: A sensor for detecting the sleeve is installed above the base plate.

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