Precise assembly mechanism for steel needles

Abstract

The utility model discloses a steel needle precise assembling mechanism which comprises a working table, a clamping mechanism used for grabbing steel needles and a first moving mechanism used for moving the clamping mechanism, the clamping mechanism is located above the working table, and the working table is provided with a positioning jig used for placing and fixing products. A first visual positioning mechanism and a second visual positioning mechanism are arranged around the positioning jig, the first visual positioning mechanism is used for detecting the position of the assembling end of the steel needle, and the second visual positioning mechanism is used for detecting the position of the mounting hole of the product. The steel needle is clamped through the clamping mechanism, the first moving mechanism moves the steel needle to the position above the first visual positioning machine, the first visual positioning machine detects the position of the assembly end of the steel needle, and the second visual positioning mechanism detects the position of an installation hole of a product. The first moving mechanism accurately moves the steel needle to the position above the mounting hole according to the position of the assembling end of the steel needle and the position of the mounting hole, and then the assembling end of the steel needle is inserted into the mounting hole, so that automatic steel needle precise mounting is achieved, manual work is not needed, and the steel needle mounting precision is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel needle assembling equipment, in particular to a steel needle precision assembling mechanism. BACKGROUND

[0002] In the production process of medical products, some medical products may involve steel needle assembly, such as CGM products. The traditional steel needle assembly inserts the steel needle into the mounting hole of the product by manual. This assembly method is low in efficiency, and the product may be contaminated by manual contact. At present, steel needle assembly equipment appears on the market, so as to realize mechanical automatic assembly of the steel needle.

[0003] For example, the Chinese patent with publication number CN204771442U discloses a steel needle automatic needle assembling mechanism of a medical plastic steel needle puncture device assembling machine, which comprises a steel needle feeding mechanism, a steel needle parallel pushing mechanism, a steel needle insertion guiding and positioning mechanism, a steel needle vertical one-time pressing mechanism and a steel needle vertical limiting secondary pressing mechanism. The steel needle insertion guiding and positioning mechanism is located above the plastic needle positioning mechanism, and comprises a steel needle positioning mobile air cylinder, a steel needle positioning clamp and a steel needle positioning clamp fixing seat. The steel needle positioning clamp is fixed on the steel needle positioning clamp fixing seat, and the steel needle positioning mobile air cylinder is connected with the steel needle positioning clamp fixing seat. The steel needle automatic needle assembling mechanism moves the steel needle to the steel needle insertion guiding and positioning mechanism through the steel needle feeding mechanism and the steel needle parallel pushing mechanism. The steel needle is assembled with the plastic needle by mechanical positioning of the steel needle positioning clamp and downward pressing of the steel needle vertical one-time pressing mechanism and the steel needle vertical limiting secondary pressing mechanism. Since the steel needle automatic needle assembling mechanism positions the steel needle mechanically through the steel needle positioning clamp, the positioning accuracy is low. For some products that need to be assembled with thin steel needles, the mounting hole of the product is small, and it is difficult to ensure the alignment of the mounting hole and the steel needle only by the positioning action of the steel needle positioning clamp, so that the steel needle cannot be precisely assembled.

[0004] In view of this, the utility model provides a steel needle precision assembling mechanism to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model overcomes the above technical defects and provides a steel needle precision assembling mechanism, which can precisely assemble the steel needle on the product.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] The steel needle precision assembly mechanism comprises a workbench, a clamping mechanism for grabbing the steel needle, a first moving mechanism for moving the clamping mechanism, the clamping mechanism is located above the workbench, the workbench is provided with a positioning jig for placing and fixing a product, a first visual positioning mechanism and a second visual positioning mechanism are arranged around the positioning jig, the first visual positioning mechanism is used for detecting the position of the assembly end of the steel needle, and the second visual positioning mechanism is used for detecting the position of the mounting hole of the product.

[0008] Preferably, the steel needle precision assembly mechanism further comprises a first camera support arranged at the periphery of the workbench, the first visual positioning mechanism is a first CCD camera mounted on the first camera support, and the clamping mechanism is located above the first CCD camera.

[0009] Preferably, the top of the positioning jig is provided with a plurality of workpiece grooves for placing the product.

[0010] Preferably, the steel needle precision assembly mechanism further comprises a second camera support arranged at the periphery of the workbench, the second camera support is provided with a second moving mechanism, the second visual positioning mechanism is a second CCD camera connected to the output end of the second moving mechanism, and the second moving mechanism is used to move the second CCD camera above the positioning jig.

[0011] Preferably, the workpiece grooves on the positioning jig are arranged along the X-axis direction, the second moving mechanism is a first X-axis linear moving module, and the first X-axis linear moving module is used to drive the second CCD camera to move above the positioning jig.

[0012] Preferably, the workbench is provided with the second camera support on one side along the X-axis direction, and a clamp support for mounting the first moving mechanism on the other side, and the first visual positioning mechanism is arranged on one side of the workbench along the Y-axis direction.

[0013] Preferably, the first moving mechanism comprises a Y-axis linear moving module mounted on the clamp support, the output end of the Y-axis linear moving module is connected with a second X-axis linear moving module, and the output end of the second X-axis linear moving module is connected with a first Z-axis linear moving module.

[0014] Preferably, the workbench is provided with a second Z-axis linear moving module located around the positioning jig, a fixing jig for pressing and fixing the product during assembly of the steel needle is arranged above the positioning jig, the output end of the second Z-axis linear moving module is connected with a second Z-axis linear moving module, and the clamping mechanism is connected to the output end of the first Z-axis linear moving module.

[0015] Preferably, the positioning jig comprises a connecting plate, a transmission plate connected perpendicularly to the edge of the connecting plate, the transmission plate being connected with a second Z-axis linear movement module, the connecting plate being arranged on one side of the positioning jig along the Y-axis direction, the connecting plate extending to the positioning jig to form an extended protrusion on the side of the positioning jig, and the bottom of the extended protrusion being provided with a floating positioning pin for pressing and fixing the product.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1. The utility model discloses a first moving mechanism moves the clamping mechanism and the steel needle to the first visual positioning machine detection, and the first visual positioning machine detects the position of the assembly end of the steel needle, and a second visual positioning mechanism detects the position of the mounting hole of the product, and the first moving mechanism accurately moves the steel needle to the mounting hole according to the position of the assembly end of the steel needle and the position of the mounting hole, and then inserts the assembly end of the steel needle into the mounting hole, so that the automatic steel needle precision assembly is realized, manual work is not needed, the steel needle assembly precision is high, and the product quality is improved.

[0018] 2. The second visual positioning mechanism moves above the positioning jig through the first X-axis linear movement module, so that the second visual positioning mechanism can accurately position the product mounting hole in each workpiece groove respectively, and when the clamping mechanism assembles the steel needle on the product, the first X-axis linear movement module drives the second visual positioning mechanism to move away from the positioning jig, so that the clamping mechanism can assemble the steel needle on the product, and the layout of the second visual positioning mechanism is reasonable.

[0019] 3. The utility model discloses a fixing jig that can press and fix the product when assembling the steel needle on the product, avoids the movement of the product when assembling the steel needle, and further improves the steel needle assembly precision. DRAWINGS

[0020] Figure 1 It is the whole schematic diagram of the steel needle precision assembly mechanism of the utility model Figure 1 ;

[0021] Figure 2 It is the whole schematic diagram of the steel needle precision assembly mechanism of the utility model Figure 2 ;

[0022] Figure 3 It is the structure schematic diagram of the workbench of the utility model

[0023] The implementation, functional characteristics and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0024] The features and other related features of the utility model will be further explained in detail through embodiments, so as to facilitate the understanding of the technicians in the same industry.

[0025] Referring to Figures 1 to 3 , an embodiment of the steel needle precision assembly mechanism is proposed:

[0026] A steel needle precision assembly mechanism includes a workbench 1, a clamping mechanism 2 for grabbing a steel needle, and a first moving mechanism 3 for moving the clamping mechanism 2. The clamping mechanism 2 is located above the workbench 1, and the workbench 1 is provided with a positioning jig 11 for placing and fixing the product, and a first visual positioning mechanism 4 and a second visual positioning mechanism 5 are arranged around the positioning jig 11. The first visual positioning mechanism 4 is used to detect the position of the assembled end of the steel needle, and the second visual positioning mechanism 5 is used to detect the position of the mounting hole of the product.

[0027] As Figure 1 indicated, the steel needle precision assembly mechanism further comprises a first camera support 41 arranged on the outer periphery of the workbench 1, and the first visual positioning mechanism 4 is a first CCD camera mounted on the first camera support 41. The clamping mechanism 2 is located above the first CCD camera.

[0028] As Figure 3 indicated, the top of the positioning jig 11 is provided with a plurality of workpiece grooves 111 for placing the product.

[0029] The steel needle precision assembly mechanism further comprises a second camera support 51 arranged on the outer periphery of the workbench 1. The second camera support 51 is provided with a second moving mechanism 6, and the second visual positioning mechanism 5 is a second CCD camera connected to the output end of the second moving mechanism 6. The second moving mechanism 6 is used to move the second CCD camera above the positioning jig 11, so that the second CCD camera can accurately position the product mounting hole in each workpiece groove 111.

[0030] Specifically, the workpiece grooves 111 on the positioning jig 11 are arranged along the X-axis direction. The second moving mechanism 6 is a first X-axis linear motion module, which is used to drive the second CCD camera to move along the X-axis direction above the workpiece grooves 111. Since the workpiece grooves 111 on the positioning jig 11 are arranged along the X-axis direction, the second CCD camera can detect all the product mounting holes by moving along the X-axis direction, simplifying the movement line in the detection process of the second CCD camera.

[0031] As Figure 1 indicated, the first X-axis linear motion module includes a first base 61 extending along the X-axis direction, a first X-axis sliding rail 62 fixedly installed on the first base 61, and a first sliding block 63 slidingly connected to the first X-axis sliding rail 62. The second CCD camera is fixedly connected through a camera base 64 and the first sliding block 63.

[0032] The second camera support 51 is arranged on one side of the workbench 1 along the X-axis direction, and the clamp support 31 for mounting the first moving mechanism 3 is arranged on the other side of the workbench 1 along the X-axis direction, and the first visual positioning mechanism 4 is arranged on one side of the workbench 1 along the Y-axis direction, so that the second visual positioning mechanism 5 can position the product mounting hole while the first moving mechanism 3 can move the clamping mechanism 2 and the steel needle to the first visual positioning mechanism 4 for detection and positioning, thereby improving the positioning efficiency of the assembly mechanism.

[0033] The first moving mechanism 3 comprises a Y-axis linear moving module 32 mounted on the clamp support 31, the output end of the Y-axis linear moving module 32 is connected with a second X-axis linear moving module 33, and the output end of the second X-axis linear moving module 33 is connected with a first Z-axis linear moving module 34.

[0034] As shown in Figure 2 , the Y-axis linear moving module 32 comprises a second base 321 extending along the Y-axis direction, a Y-axis sliding rail 322 fixedly mounted on the second base 321, and a second sliding block 323 slidingly connected with the Y-axis sliding rail 322. The second X-axis linear moving module 33 comprises a third base 331 extending along the X-axis direction, a second X-axis sliding rail 332 fixedly mounted on the third base 331, and a third sliding block 333 slidingly connected with the second X-axis sliding rail 332, and the first Z-axis linear moving module 34 is fixedly connected with the clamp base 21 and the third sliding block 333. The third base 331 is fixedly connected with the second sliding block 323.

[0035] As shown in Figure 3 , the workbench 1 is provided with a second Z-axis linear moving module 12 around the positioning jig 11, and the positioning jig 11 is provided with a fixing jig 7 for pressing and fixing the product during assembly of the steel needle.

[0036] The positioning jig 11 comprises a connecting plate 71 and a transmission plate 72 connected perpendicularly to the edge of the connecting plate 71. The transmission plate 72 is fixedly connected with the output end of the second Z-axis linear moving module 12. The connecting plate 71 is arranged on one side of the positioning jig 11 along the Y-axis direction, and the connecting plate 71 extends to form an extension protrusion 73 on the side of the positioning jig 11. The bottom of the extension protrusion 73 is provided with a floating positioning pin 74 for pressing and fixing the product, so as to avoid movement of the product during assembly of the steel needle, and further improve the assembly precision of the steel needle.

[0037] The utility model discloses a first mobile mechanism 3 moves the clamping mechanism 2 to clamp the steel needle, and after the clamping mechanism 2 clamps the steel needle, the first mobile mechanism 3 moves the clamping mechanism 2 and the steel needle together to the first visual positioning machine detection above, and the first visual positioning machine detects the position of the assembly end of the steel needle.

[0038] In the process that the first visual positioning machine detects the position of the assembly end of the steel needle, the first X-axis linear movement module moves the second visual positioning mechanism 5 to the workpiece groove 111 above simultaneously, and the second visual positioning mechanism 5 accurately positions the mounting hole of the product in the workpiece groove 111.

[0039] After the second visual positioning mechanism 5 detects the mounting hole, the second Z-axis linear movement module 12 moves the fixed jig 7 above the second visual positioning mechanism 5, so as to avoid the fixed jig 7 from hindering the detection of the second visual positioning mechanism 5.

[0040] Then, the first mobile mechanism 3 accurately moves the steel needle to the mounting hole above according to the position of the assembly end of the steel needle and the position of the mounting hole, and then inserts the assembly end of the steel needle into the mounting hole.

[0041] Finally, the second Z-axis linear movement module 12 drives the fixed jig 7 to move upwards, so as to facilitate the taking out of the product on the positioning jig 11 or the assembly of the next product and the steel needle.

[0042] The utility model discloses a visual positioning, and the detection precision is less than 0.02mm, can make the clamping mechanism 2 accurately insert the steel needle into the mounting hole, and no matter how to place the angle of product, can accurately visually detect the position of the mounting hole.

[0043] The above only is the preferred embodiment of the utility model, and does not therefore limit the patent range of the utility model, and all equivalent structural transformations that utilize the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A precision assembly mechanism for steel needles, used to insert the assembly end of a steel needle into a mounting hole in a product, characterized in that, The precision assembly mechanism for steel needles includes a worktable (1), a gripping mechanism (2) for gripping steel needles, and a first moving mechanism (3) for moving the gripping mechanism (2). The gripping mechanism (2) is located above the worktable (1). The worktable (1) is provided with a positioning fixture (11) for placing and fixing the product. A first visual positioning mechanism (4) and a second visual positioning mechanism (5) are provided around the positioning fixture (11). The first visual positioning mechanism (4) is used to detect the position of the assembly end of the steel needle, and the second visual positioning mechanism (5) is used to detect the position of the mounting hole of the product.

2. The precision assembly mechanism for steel needles according to claim 1, characterized in that, It also includes a first camera bracket (41) disposed on the outer periphery of the workbench (1), the first visual positioning mechanism (4) being a first CCD camera mounted on the first camera bracket (41), and the clamping mechanism (2) being located above the first CCD camera.

3. The precision assembly mechanism for steel needles according to claim 1, characterized in that, The top of the positioning fixture (11) is provided with multiple workpiece slots (111) for placing products.

4. The precision assembly mechanism for steel needles according to claim 3, characterized in that, It also includes a second camera bracket (51) disposed on the outer periphery of the workbench (1). The second camera bracket (51) is provided with a second moving mechanism (6). The second visual positioning mechanism (5) is a second CCD camera connected to the output end of the second moving mechanism (6). The second moving mechanism (6) is used to move the second CCD camera above the positioning fixture (11).

5. The precision assembly mechanism for steel needles according to claim 4, characterized in that, The workpiece grooves (111) on the positioning fixture (11) are arranged along the X-axis direction. The second moving mechanism (6) is a first X-axis linear moving module. The first X-axis linear moving module is used to drive the second CCD camera to move above the positioning fixture (11).

6. The precision assembly mechanism for steel needles according to claim 5, characterized in that, The workbench (1) has a second camera bracket (51) on one side along the X-axis and a clamp bracket (31) for mounting the first moving mechanism (3) on the other side. The first visual positioning mechanism (4) is located on one side of the workbench (1) along the Y-axis.

7. The precision assembly mechanism for steel needles according to claim 6, characterized in that, The first moving mechanism (3) includes a Y-axis linear moving module (32) mounted on a clamp bracket (31). The output end of the Y-axis linear moving module (32) is connected to a second X-axis linear moving module (33). The output end of the second X-axis linear moving module (33) is connected to a first Z-axis linear moving module (34). The clamping mechanism (2) is connected to the output end of the first Z-axis linear moving module (34).

8. The precision assembly mechanism for steel needles according to claim 6, characterized in that, The workbench (1) is provided with a second Z-axis linear motion module (12) located around the positioning fixture (11). Above the positioning fixture (11) is a fixing fixture (7) for pressing and fixing the product when assembling the steel needle. The output end of the second Z-axis linear motion module (12) is connected to the second Z-axis linear motion module (12).

9. A precision assembly mechanism for steel needles according to claim 8, characterized in that, The positioning fixture (11) includes a connecting plate (71) and a transmission plate (72) perpendicularly connected to the edge of the connecting plate (71). The transmission plate (72) is connected to the second Z-axis linear motion module (12). The connecting plate (71) is disposed on one side of the positioning fixture (11) along the Y-axis direction. The connecting plate (71) extends towards the positioning fixture (11) from the side close to the positioning fixture (11) to form an extension protrusion (73). The bottom of the extension protrusion (73) is provided with a floating positioning pin (74) for pressing and fixing the product.

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