A sewing machine needle bending measuring device

Abstract

The present invention relates to a sewing machine needle bending measuring device applied to the field of bending detection. Before detection, the machine needle to be detected is fixed on the needle clamp, the clamp clamps the visible block, and the motor is started to drive the two visible blocks to fit together. During the fitting process of the two visible blocks, the machine needle cuts the visible block and leaves a cutting hole on the visible block. The cutting surfaces of the two visible blocks are bonded together and cut with glue to expose the cross section of the cutting hole. Then the sheet-like visible block is inserted into the interior of the strip groove, and the constant pressure blower is started to blow air between the two docking plates through the blowpipe. The gas flow sensor obtains the size of the gas flow and the curvature of the needle at different positions. Through the above-mentioned settings, the bending measurement of needles of different shapes can be performed, and the bending degree of the needle at different positions can be measured, thereby improving the measurement accuracy of the device and enabling the device to be applied to the measurement of needles of different specifications.

Description

Technical Field

[0001] The invention relates to a measuring device, in particular to a sewing machine needle bending measuring device applied in the bending detection field. Background Art

[0002] After the sewing machine needle is produced, the curvature of the sewing machine needle is measured by sampling. When measuring the curvature of the sewing machine, due to the thin diameter of the needle, the inspection is mostly done manually. A steel ruler or a reference line is drawn, and the needle is made parallel to the reference line. The reference line is used as a reference to help observe the bending of the needle.

[0003] However, manual observation has large errors and cannot systematically determine the curvature of the needle. In addition, the shapes and specifications of the needles vary, which increases the difficulty of detection and further increases the detection error. Therefore, further improvement is needed. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the error in manual observation of the curvature of the needle is large, and the curvature of the needle cannot be systematically obtained. In addition, the shapes and specifications of the needle vary, which increases the difficulty of detection and further increases the detection error.

[0005] To solve the above problems, the present invention provides a sewing machine needle bending measuring device, including a solid test box, wherein the inner wall at the top and the inner wall at the bottom of the solid test box are respectively fixedly connected to two upper support plates and two lower support plates, sliding rods are fixedly connected between the two upper support plates and between the two lower support plates, two movable plates are slidably connected between the sliding rods on the upper and lower sides, the ends of the two movable plates close to each other are fixedly connected to clamps, the clamping end of the clamp is fixedly connected to a visible block, the top of the solid test box is fixedly connected to a motor, the output end of the motor is fixedly connected to a needle chuck for fixing the machine needle, the needle chuck is located at the center between the two movable plates, a screw rod is rotatably connected between the two lower support plates, the screw rod passes through the two movable plates and is threadedly connected thereto, and the two movable plates are respectively located at the positive and negative wires of the screw rod, the side wall of one of the lower support plates is fixedly connected to a driving machine, and the output end of the driving machine is fixedly connected to one end of the screw rod.

[0006] As a further improvement of the present application, it also includes a gas detection box, the side wall of the gas detection box is fixedly connected to an access block, an inner cavity is opened inside the access block, both ends of the inner cavity are opened with grooves, and the top and bottom ends of the grooves are rotatably connected to pulleys.

[0007] As a further improvement of the present application, the inner walls of the upper and lower sides of the inner cavity are slidably connected with docking plates, the ends of the two docking plates close to each other are fixedly connected with sealing strips, and a sedimentation cavity is opened, and the sealing strip is located on the outside of the sedimentation cavity.

[0008] As a further improvement of the present application, the two docking plates are fixedly connected to one end away from each other with iron sheets, the top and bottom ends of the inner cavity are fixedly connected to electromagnets, and top springs are fixedly connected between the top end of the inner cavity and the upper docking plate and between the bottom end of the inner cavity and the lower docking plate.

[0009] As another improvement of the present application, a constant-pressure blower is fixedly connected to the bottom end of the gas detection box, a blowpipe is fixedly connected to the output end of the constant-pressure blower, a gas flow sensor is fixedly connected to the top end of the gas detection box, and one end of the gas flow sensor is fixedly connected to an outlet pipe.

[0010] As another improved supplement of the present application, one end of the outlet pipe and the upper docking plate, and one end of the blow pipe and the lower docking plate are fixedly connected by a flexible connecting pipe.

[0011] A method for using a sewing machine needle bending measuring device comprises the following steps:

[0012] S1. Fix the needle to be tested on the needle clamp, place the visual block on the fixture, and clamp the visual block with the fixture;

[0013] S2, start the motor to drive the needle to rotate, start the driving machine to drive the screw to rotate forward, and drive the two visible blocks to move toward the direction of the needle through the two movable plates until the two visible blocks fit together;

[0014] S3, when the two visible blocks move toward the needle until they are attached, the needle cuts the visible block and leaves a cutting hole on the visible block;

[0015] S4, start the driving machine to drive the screw to reverse so that the two display blocks fit together, remove the display blocks, and use glue to glue the cutting surfaces of the two display blocks together;

[0016] S5, using a cutting machine to cut the two bonded visible blocks into multiple pieces, exposing the cross section of the cutting hole;

[0017] S6, start the two electromagnets to attract the two butt joint plates away from each other through the iron sheet, insert the sheet-shaped visible block into the interior of the strip groove, and make the cross section of the cutting hole located between the two sedimentation chambers;

[0018] S7, start the constant pressure blower to blow air between the two butt-jointed plates through the blow pipe, and the gas is blown toward the gas flow sensor through the cutting hole and the outlet pipe;

[0019] S8. The gas flow sensor obtains the size of the gas flow, and based on the size of the gas flow, obtains the size of the cutting hole cross section, and then obtains the curvature of the needle at different positions.

[0020] To summarize, before testing, the device fixes the needle to be tested on the needle clamp so that the clamp clamps the visible block, and starts the motor to drive the two visible blocks to fit together. During the process of fitting the two visible blocks together, the needle cuts the visible block and leaves a cutting hole on the visible block. The cutting surfaces of the two visible blocks are glued together and cut with glue to reveal the cross-section of the cutting hole. Then, the sheet-like visible block is stuffed into the interior of the groove, and the constant-pressure blower is started to blow air between the two docking plates through the blowpipe. The gas flow sensor obtains the size of the gas flow and the curvature of the needle at different positions. Through the above settings, the bending measurement of needles of different shapes can be performed, and the degree of bending of the needle at different positions can be measured, which improves the measurement accuracy of the device and enables the device to be applied to the measurement of needles of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front cross-sectional view of the solid test box in the first and second embodiments of the present application;

[0022] Figure 2 This is a state diagram when two visible blocks are close to each other in the first and second implementation modes of the present application;

[0023] Figure 3 This is a diagram showing the cutting state of the visible block when the needle is not bent in the first and second embodiments of the present application;

[0024] Figure 4 This is a diagram showing the cutting state of the visible block when the needle is bent in the first and second embodiments of the present application;

[0025] Figure 5 This is a front cross-sectional view of the gas detection box in the first and second embodiments of the present application;

[0026] Figure 6 It is a front cross-sectional view of the access block in the first and second embodiments of the present application;

[0027] Figure 7 This is a state diagram of the two butt joint plates being away from each other in the first and second embodiments of the present application;

[0028] Figure 8 This is a state diagram of the visible block when slicing in the first and second embodiments of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Solid test box; 2. Upper support plate; 3. Lower support plate; 4. Slide rod; 5. Movable plate; 6. Clamp; 7. Screw rod; 8. Driving machine; 9. Motor; 10. Needle chuck; 11. Visible block; 12. Gas detection box; 13. Access block; 1301. Inner cavity; 1302. Strip groove; 14. Pulley; 15. Docking plate; 1501. Sealing strip; 1502. Sedimentation cavity; 16. Iron sheet; 17. Electromagnet; 18. Constant pressure blower; 1801. Blow pipe; 19. Gas flow sensor; 1901. Outlet pipe; 20. Flexible connecting pipe; 21. Top spring. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-8 A sewing machine needle bending measuring device is shown, comprising a solid test box 1, wherein the inner wall at the top and the inner wall at the bottom of the solid test box 1 are respectively fixedly connected to two upper support plates 2 and two lower support plates 3, a sliding rod 4 is fixedly connected between the two upper support plates 2 and the two lower support plates 3, two movable plates 5 are slidably connected between the sliding rods 4 on the upper and lower sides, the ends of the two movable plates 5 close to each other are fixedly connected to a clamp 6, the clamping end of the clamp 6 is fixedly connected to a visible block 11, a motor 9 is fixedly connected to the top of the solid test box 1, a needle chuck 10 for fixing the machine needle is fixedly connected to the output end of the motor 9, and the needle chuck 10 is located at the center between the two movable plates 5, a screw rod 7 is rotatably connected between the two lower support plates 3, the screw rod 7 passes through the two movable plates 5 and is threadedly connected thereto, and the two movable plates 5 are respectively located at the positive and negative threads of the screw rod 7, a side wall of one of the lower support plates 3 is fixedly connected to a driving machine 8, and the output end of the driving machine 8 is fixedly connected to one end of the screw rod 7.

[0034] The gas detection box 12 also includes a gas detection box 12, the side wall of the gas detection box 12 is fixedly connected with an access block 13, the access block 13 is provided with an inner cavity 1301, both ends of the inner cavity 1301 are provided with grooves 1302, the top and bottom ends of the grooves 1302 are rotatably connected with pulleys 14, the inner walls of the upper and lower sides of the inner cavity 1301 are slidably connected with docking plates 15, the ends of the two docking plates 15 close to each other are fixedly connected with sealing strips 1501, and a sedimentation cavity 1502 is provided, the sealing strips 1501 are located on the outside of the sedimentation cavity 1502, the ends of the two docking plates 15 away from each other are fixedly connected with iron sheets 16, the top and bottom of the inner cavity 1301 are fixedly connected with the sealing strips 1501, and the sealing strips 1501 are located on the outside of the sedimentation cavity 1502. The ends are fixedly connected with electromagnets 17, top springs 21 are fixedly connected between the top of the inner cavity 1301 and the upper docking plate 15, and between the bottom of the inner cavity 1301 and the lower docking plate 15, the bottom end of the gas detection box 12 is fixedly connected with a constant pressure blower 18, the output end of the constant pressure blower 18 is fixedly connected with a blow pipe 1801, the top of the gas detection box 12 is fixedly connected with a gas flow sensor 19, one end of the gas flow sensor 19 is fixedly connected with an outlet pipe 1901, one end of the outlet pipe 1901 and the upper docking plate 15, and one end of the blow pipe 1801 and the lower docking plate 15 are fixedly connected through a flexible pipe 20.

[0035] The second implementation method:

[0036] Figure 1-8 A method for using a sewing machine needle bending measuring device is shown, comprising the following steps:

[0037] S1, fix the needle to be tested on the needle clamp 10, put the visual block 11 on the fixture 6, and make the fixture 6 clamp the visual block 11;

[0038] S2, start the motor 9 to drive the needle to rotate, start the driving machine 8 to drive the screw 7 to rotate forward, and drive the two visible blocks 11 to move toward the direction of the needle through the two movable plates 5 until the two visible blocks 11 fit together;

[0039] S3, when the two display blocks 11 move toward the machine needle until they are attached, the machine needle cuts the display block 11 and leaves a cutting hole on the display block 11;

[0040] S4, start the driving machine 8 to drive the screw rod 7 to reverse so that the two display blocks 11 fit together, remove the display block 11, and use glue to glue the cutting surfaces of the two display blocks 11 together;

[0041] S5, using a cutting machine to cut the two bonded display blocks 11 into multiple pieces, exposing the cross section of the cutting hole;

[0042] S6, start the two electromagnets 17 to attract the two docking plates 15 away from each other through the iron sheet 16, insert the sheet-shaped visible block 11 into the interior of the strip groove 1302, and make the cross section of the cutting hole located between the two sedimentation chambers 1502;

[0043] S7, start the constant pressure blower 18 to blow air between the two butt joint plates 15 through the blow pipe 1801, and the gas blows toward the gas flow sensor 19 through the cutting hole and the outlet pipe 1901;

[0044] S8. The gas flow sensor 19 obtains the size of the gas flow, and based on the size of the gas flow, obtains the size of the cutting hole cross section, and then obtains the curvature of the needle at different positions.

[0045] Through the above-mentioned arrangement, the bending of needles of different shapes can be measured, and the bending degree of the needles at different positions can be measured, thereby improving the measurement accuracy of the device and enabling the device to be applied to the measurement of needles of different specifications.

[0046] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A sewing machine needle bending measuring device, comprising a solid test box (1), characterized in that: The inner wall at the top and the inner wall at the bottom of the solid test box (1) are respectively fixedly connected with two upper support plates (2) and two lower support plates (3); a sliding rod (4) is fixedly connected between the two upper support plates (2) and between the two lower support plates (3); two movable plates (5) are slidably connected between the sliding rods (4) on the upper and lower sides; the ends of the two movable plates (5) close to each other are fixedly connected with a clamp (6); the clamping end of the clamp (6) is fixedly connected with a visible block (11); the top of the solid test box (1) is fixedly connected with a motor (9); The output end of the motor (9) is fixedly connected to a needle clamp (10) for fixing the machine needle, and the needle clamp (10) is located at the center between the two movable plates (5). A screw rod (7) is rotatably connected between the two lower support plates (3), and the screw rod (7) passes through the two movable plates (5) and is threadedly connected thereto, and the two movable plates (5) are respectively located at the positive thread and the negative thread of the screw rod (7), and the side wall of one of the lower support plates (3) is fixedly connected to a driving machine (8), and the output end of the driving machine (8) is fixedly connected to one end of the screw rod (7); The gas detection box (12) further comprises a gas detection box (12), wherein a side wall of the gas detection box (12) is fixedly connected to an access block (13), an inner cavity (1301) is provided inside the access block (13), both ends of the inner cavity (1301) are provided with grooves (1302), the top and bottom ends of the grooves (1302) are rotatably connected to pulleys (14), the inner walls of the upper and lower sides of the inner cavity (1301) are slidably connected to docking plates (15), the ends of the two docking plates (15) close to each other are fixedly connected to sealing strips (1501), and a sedimentation cavity (1502) is provided, the sealing strip (1501) is located on the outside of the sedimentation cavity (1502), the ends of the two docking plates (15) far from each other are fixedly connected to iron sheets (16), the top of the inner cavity (1301) is connected to the inner wall of the upper and lower sides of the inner cavity (1301), and the sealing strip (1501) is located on the outside of the sedimentation cavity (1502). The top and bottom ends of the gas detection box (12) are fixedly connected to an electromagnet (17); a top spring (21) is fixedly connected between the top end of the inner cavity (1301) and the upper docking plate (15), and between the bottom end of the inner cavity (1301) and the lower docking plate (15); the bottom end of the gas detection box (12) is fixedly connected to a constant-pressure blower (18); the output end of the constant-pressure blower (18) is fixedly connected to a blowpipe (1801); the top end of the gas detection box (12) is fixedly connected to a gas flow sensor (19); one end of the gas flow sensor (19) is fixedly connected to an outlet pipe (1901); one end of the outlet pipe (1901) and the upper docking plate (15), and one end of the blowpipe (1801) and the lower docking plate (15) are fixedly connected via a flexible connecting pipe (20).

2. The method for using the sewing machine needle bending measuring device according to claim 1, characterized in that: The following steps are involved: S1, fix the needle to be tested on the needle clamp (10), place the visible block (11) on the fixture (6), and make the fixture (6) clamp the visible block (11); S2, starting the motor (9) to drive the needle to rotate, starting the driving machine (8) to drive the screw rod (7) to rotate forward, and driving the two visible blocks (11) to move in the direction of the needle through the two movable plates (5) until the two visible blocks (11) are in contact with each other; S3, when the two visible blocks (11) move toward the machine needle until they are in contact with each other, the machine needle cuts the visible block (11) and leaves a cutting hole on the visible block (11); S4, starting the driving machine (8) to drive the screw rod (7) to reverse so that the two visible blocks (11) are fitted together, and removing the visible block (11), and using glue to glue the cutting surfaces of the two visible blocks (11) together; S5, using a cutting machine to cut the two bonded display blocks (11) into multiple pieces, exposing the cross section of the cutting hole; S6, starting the two electromagnets (17) to attract the two docking plates (15) away from each other through the iron sheet (16), inserting the sheet-shaped visible block (11) into the interior of the strip groove (1302), and making the cross section of the cutting hole located between the two sedimentation chambers (1502); S7, starting the constant pressure blower (18) to blow air between the two butt joint plates (15) through the blow pipe (1801), and the gas is blown toward the gas flow sensor (19) through the cutting hole and the outlet pipe (1901); S8. The gas flow sensor (19) obtains the size of the gas flow, and based on the size of the gas flow, obtains the size of the cutting hole cross section, and then obtains the curvature of the needle at different positions.

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