A loading and positioning mechanism for precision needle bars

Abstract

The utility model relates to the field of precision manufacturing technology, especially relates to a kind of feeding positioning mechanism for precision needle bar, including feeding assembly and positioning assembly, feeding assembly contains feeding slope and the feeding wheel of material slot, feeding wheel is coaxial assembly double feeding wheel, feeding slope discharge end is equipped with gear row structure, realize material accurate into slot and needle bar orientation uniformity;Positioning assembly contains V-shaped support, front and rear positioning cylinder and positioning clamping assembly, front positioning cylinder is rigid structure, rear positioning cylinder is equipped with spring or rubber elastic structure, and the length of micro-deviation material is adapted, positioning clamping jaw uses nylon material, and it is matched with finger cylinder and double-cylinder cylinder, clamping is stable and prevents scratching.V-shaped support is equipped with concave space guarantee component link, and bottom sensor detects material in place.The mechanism solves the problems of posture confusion, easy to fall out, positioning mismatch and other problems in the prior art, realizes the automatic feeding positioning of precision needle bar, and meets the needs of batch production.

Description

Technical Field

[0001] This utility model relates to the field of precision manufacturing technology, and in particular to a feeding and positioning mechanism for a precision needle bar. Background Technology

[0002] In the machining of precision needle bars and subsequent processes, the coordination of feeding and positioning is crucial to ensuring production accuracy and efficiency. However, existing technologies struggle to balance posture uniformity, positioning adaptability, and material protection. Current mainstream feeding and positioning methods have significant shortcomings: Firstly, feeding often relies on vibratory feeders or single feeding wheels. Vibratory feeders cannot distinguish between the needle cone and the needle tail, leading to inconsistent material posture. The gap between the single feeding wheel and the ramp can cause the needle bar to detach, making it difficult to achieve precise insertion and uniform needle bar orientation. Secondly, positioning mechanisms often use rigid cylinder drives, which cannot accommodate the minute length deviations caused by machining tolerances, easily leading to over-positioning or under-positioning. Furthermore, metal grippers can easily scratch the needle bar surface during clamping. Additionally, the disconnect between the feeding and positioning components further reduces overall automation efficiency, failing to meet the engineering requirements for mass production of precision needle bars.

[0003] Therefore, how to achieve seamless coordination between precision needle bar feeding and positioning to adapt to mass production is a pressing technical problem that needs to be solved in the field of precision manufacturing. Utility Model Content

[0004] To achieve seamless coordination between precision needle bar feeding and positioning, and to adapt to mass production, this utility model provides a precision needle bar feeding and positioning mechanism, including a feeding component and a positioning component. The feeding assembly includes a feeding ramp and a feeding wheel; the surface of the feeding wheel is provided with several material grooves parallel to the axial direction; the feeding ramp is inclinedly arranged at the material picking end of the feeding wheel, and the material output end of the feeding ramp corresponds to the material groove, so that the precision needle bar accurately enters the groove and the needle bar faces the same direction; The positioning assembly includes a V-shaped bracket, a front positioning cylinder, a rear positioning cylinder, and a positioning clamping assembly. The V-shaped bracket includes a receiving part and a supporting part, with the top of the receiving part corresponding to the material trough. The front positioning cylinder and the rear positioning cylinder are respectively located on both sides of the V-shaped bracket. The front positioning cylinder is a rigid structure that can fix the position of the positioning material needle cone, while the rear positioning cylinder is equipped with an elastic structure that can adapt to materials with slight length deviations. The positioning clamping assembly is located on the side of the V-shaped bracket.

[0005] In some embodiments, the feeding wheel includes a first feeding wheel and a second feeding wheel assembled coaxially, and the material troughs on the first feeding wheel and the second feeding wheel are collinear.

[0006] In some embodiments, the discharge end of the feeding ramp adopts a toothed structure, including a plurality of protrusions and concave portions; the width of the concave portion can accommodate the first feeding wheel or the second feeding wheel to extend into it, and the width of the protrusion can extend between the first feeding wheel and the second feeding wheel.

[0007] In some embodiments, the V-shaped bracket is provided with a concave space that extends through both sides, one side for the positioning and clamping assembly to extend into, and the other side to accommodate the first or second feeding wheel to extend into.

[0008] In some embodiments, the positioning clamping assembly includes a positioning jaw, a first positioning cylinder, and a second positioning cylinder; the positioning jaw is located at the output end of the first positioning cylinder, the first positioning cylinder is located at the top of the piston rod of the second positioning cylinder, and the second positioning cylinder is located on the side of the V-shaped bracket.

[0009] In some embodiments, the positioning gripper is made of nylon.

[0010] In some embodiments, the first positioning cylinder is a finger cylinder; the second positioning cylinder is a dual-cylinder cylinder.

[0011] In some embodiments, the positioning component further includes a sensor disposed at the bottom of the V-shaped bracket for detecting whether the material has reached the positioning position.

[0012] In some embodiments, the elastic structure is a spring or rubber.

[0013] In some embodiments, the depth of the feed roller's groove is not less than 1 / 2 of the diameter of the precision needle bar.

[0014] Compared with the prior art, the utility model has the following beneficial effects: The precision needle bar feeding and positioning mechanism provided by this utility model uses a coaxially assembled feeding wheel and a feeding ramp with a toothed discharge structure in the feeding assembly to ensure that the material enters the groove accurately and the needle bar faces in a uniform direction. This solves the problem that existing vibratory feeders cannot distinguish between the needle cone and the needle tail, and the material posture is chaotic. In the positioning assembly, the front positioning cylinder adopts a rigid structure to ensure that the needle cone reference is uniform, and the rear positioning cylinder is equipped with a spring or rubber elastic structure to adapt to materials with slight length deviations to prevent damage.

[0015] In addition, the positioning grippers are made of nylon and are driven by a combination of a double-cylinder cylinder and a finger cylinder, which ensures stable and accurate clamping, avoids scratching the material surface, and also improves the adaptability of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the feeding and positioning mechanism for the precision needle bar provided by this utility model; Figure 2 A schematic diagram of the feeding assembly provided by this utility model.

[0018] Figure label: 110 - Feeding ramp; 111 - Protrusion; 112 - Recess; 120 - Feeding wheel; 120a - First feeding wheel; 120b - Second feeding wheel; 121 - Material trough; 210 - V-shaped bracket; 211 - Receiving part; 212 - Abutting part; 220 - Front positioning cylinder; 230 - Rear positioning cylinder; 240 - Positioning clamping assembly; 241 - Positioning gripper; 242a - First positioning cylinder; 242b - Second positioning cylinder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "top," "bottom," and "between," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] This utility model provides a feeding and positioning mechanism for a precision needle bar, see reference. Figure 1 As shown, it includes a feeding component and a positioning component, which work together to complete the automatic feeding and positioning of the precision needle bar.

[0022] See Figure 2As shown, the feeding assembly includes a feeding ramp 110 and a feeding wheel 120. The feeding wheel 120 is driven to rotate by a power device, and a plurality of material grooves 121 parallel to the axial direction are opened on its surface. The size of the material grooves 121 is adapted to the needle-shaped material to be tested, which can ensure stable material bearing.

[0023] Preferably, the feeding wheel 120 adopts a coaxially assembled first feeding wheel 120a and second feeding wheel 120b structure, and the material troughs 121 of the two are kept on the same axis, jointly bearing one piece of material, which facilitates stable material reception and unloading and improves the continuity of material transmission.

[0024] The feeding ramp 110 is inclinedly disposed at the material-taking end of the feeding wheel 120, and its material output end adopts a toothed structure, including several alternately distributed protrusions 111 and concave portions 112. The width of the concave portion 112 is adapted to the axial height of the first feeding wheel 120a or the second feeding wheel 120b, allowing a single feeding wheel portion to extend into it. The width of the protrusion 111 matches the gap between the first feeding wheel 120a and the second feeding wheel 120b, allowing it to extend between the two feeding wheels. This design allows the feeding ramp 110 and the feeding wheel 120 to interlock, ensuring that the material accurately enters the material trough 121 when it rolls down by gravity, preventing it from coming out due to unavoidable gaps in mechanical assembly. It also ensures that the needle bar faces the side wall uniformly, avoiding material misalignment and laying the foundation for subsequent positioning and detection.

[0025] The positioning component is located at the discharge end of the feeding component and includes a V-shaped bracket 210, a front positioning cylinder 220, a rear positioning cylinder 230, a positioning clamping component 240, and a sensor. The V-shaped bracket 210 has a concave space extending through both sides. One side allows the positioning clamping component 240 to extend into it for operation, while the other side can accommodate the first feeding wheel 120a or the second feeding wheel 120b to extend into it for unloading, thus achieving the connection between feeding and positioning.

[0026] The V-shaped bracket 210 includes a receiving part 211 and an abutment part 212. The top of the receiving part 211 corresponds to the material trough 121 of the feeding wheel 120, facilitating the material to roll from the trough 121 to the receiving part 211 and continue sliding to the bottom, where it is then abutted and fixed by the abutment part 212. The sensor is installed at the bottom of the V-shaped bracket 210 to detect in real time whether the material has reached the designated positioning position. When the material is detected to be in position, a signal is immediately sent to control the power unit of the feeding wheel 120 to stop working, avoiding interference caused by the continuous conveying of subsequent materials.

[0027] The front positioning cylinder 220 and the rear positioning cylinder 230 are symmetrically arranged on both sides of the V-shaped bracket 210. The front positioning cylinder 220 adopts a rigid fixed structure. After extending, it can accurately abut against the tip of the material needle to ensure that the needle is in a fixed detection position after positioning, thus ensuring the consistency of the detection benchmark. The rear positioning cylinder 230 is equipped with an elastic structure, which is a spring or rubber. After extending, it abuts against the tail end of the material needle, which can adapt to needle-shaped materials with slight deviations in length, and avoid material damage caused by rigid compression.

[0028] The positioning clamping assembly 240 includes a positioning gripper 241, a first positioning cylinder 242a, and a second positioning cylinder 242b. The second positioning cylinder 242b is fixed to the side of the V-shaped bracket 210, and the first positioning cylinder 242a is installed at the top of its piston rod. The first positioning cylinder 242a is a finger cylinder, and the positioning gripper 241 is assembled at its output end.

[0029] In actual operation, after the front and rear positioning cylinders complete the positioning, the second positioning cylinder 242b (double cylinder) drives the first positioning cylinder 242a to extend towards the material. Then, the first positioning cylinder 242a (finger cylinder) drives the positioning gripper 241 to clamp the material needle rod. After clamping is completed, the front and rear positioning cylinders 220 and 230 retract, ready for subsequent operations.

[0030] Preferably, the positioning gripper 241 is made of nylon material, which can effectively prevent scratching the surface of the material during the gripping process; at the same time, the design of the double cylinder and the finger cylinder can ensure the stability and accuracy of the gripping action.

[0031] The method of using the precision needle bar feeding and positioning mechanism of this utility model is as follows: First, the precision needle-shaped material to be tested is piled on the feeding ramp 110 with the needle cone facing the side wall. The material rolls down into the material trough 121 of the feeding wheel 120 by gravity and is then transported by the feeding wheel 120 to the V-shaped bracket 210 of the positioning component. After the material triggers the sensor, the front positioning cylinder 220 and the rear positioning cylinder 230 extend to position, and the positioning clamping component 240 clamps the material, thus completing the automated feeding and positioning of the precision rod for subsequent operations.

[0032] Although this document frequently uses terms such as feeding assembly, feeding ramp, feeding wheel, first feeding wheel, second feeding wheel, material trough, positioning assembly, V-bracket, receiving part, abutment part, front positioning cylinder, rear positioning cylinder, positioning clamping assembly, positioning gripper, first positioning cylinder, second positioning cylinder, sensor, nylon, spring, rubber, finger cylinder, and double cylinder, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A feeding and positioning mechanism for a precision needle bar, characterized in that: Includes feeding components and positioning components; The feeding assembly includes a feeding ramp (110) and a feeding wheel (120); the surface of the feeding wheel (120) is provided with a plurality of material grooves (121) parallel to the axial direction; the feeding ramp (110) is inclinedly arranged at the material picking end of the feeding wheel (120), and the material output end of the feeding ramp (110) corresponds to the material groove (121), so that the precision needle bar accurately enters the groove and the needle bar faces the same direction; The positioning assembly includes a V-shaped bracket (210), a front positioning cylinder (220), a rear positioning cylinder (230), and a positioning clamping assembly (240). The V-shaped bracket (210) includes a receiving part (211) and an abutment part (212), with the top of the receiving part (211) corresponding to the material trough (121). The front positioning cylinder (220) and the rear positioning cylinder (230) are respectively located on both sides of the V-shaped bracket (210). The front positioning cylinder (220) is a rigid structure that can fix the position of the positioning material needle cone, while the rear positioning cylinder (230) is equipped with an elastic structure that can adapt to materials with slight length deviations. The positioning clamping assembly (240) is located on the side of the V-shaped bracket (210).

2. The precision needle bar feeding and positioning mechanism according to claim 1, characterized in that: The feeding wheel (120) includes a first feeding wheel (120a) and a second feeding wheel (120b) assembled coaxially, and the material troughs (121) on the first feeding wheel (120a) and the second feeding wheel (120b) are collinear.

3. The precision needle bar feeding and positioning mechanism according to claim 2, characterized in that: The discharge end of the feeding ramp (110) adopts a toothed structure, including several protrusions (111) and recesses (112); the width of the recesses (112) can accommodate the first feeding wheel (120a) or the second feeding wheel (120b) to extend into, and the width of the protrusions (111) can extend between the first feeding wheel (120a) and the second feeding wheel (120b).

4. The precision needle bar feeding and positioning mechanism according to claim 3, characterized in that: The V-shaped bracket (210) has a concave space that runs through both sides, with one side for the positioning and clamping assembly (240) to extend into and the other side accommodating the first feeding wheel (120a) or the second feeding wheel (120b) to extend into.

5. The precision needle bar feeding and positioning mechanism according to claim 4, characterized in that: The positioning clamping assembly (240) includes a positioning gripper (241), a first positioning cylinder (242a), and a second positioning cylinder (242b); the positioning gripper (241) is located at the output end of the first positioning cylinder (242a), the first positioning cylinder (242a) is located at the top of the piston rod of the second positioning cylinder (242b), and the second positioning cylinder (242b) is located on the side of the V-shaped bracket.

6. The precision needle bar feeding and positioning mechanism according to claim 5, characterized in that: The positioning gripper (241) is made of nylon.

7. The precision needle bar feeding and positioning mechanism according to claim 5, characterized in that: The first positioning cylinder (242a) is a finger cylinder; the second positioning cylinder (242b) is a dual-cylinder cylinder.

8. The precision needle bar feeding and positioning mechanism according to claim 1, characterized in that: The positioning component also includes a sensor located at the bottom of the V-shaped bracket (210) for detecting whether the material has reached the positioning position.

9. The precision needle bar feeding and positioning mechanism according to claim 1, characterized in that: The elastic structure is a spring or rubber.

10. The precision needle bar feeding and positioning mechanism according to claim 1, characterized in that: The depth of the feed groove (121) of the feed roller (120) is not less than 1 / 2 of the diameter of the precision needle bar.

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