A core fixing structure for needle selector and installation method thereof

Abstract

The present invention discloses an iron core fixing structure for a needle selector and an installation method thereof, which is placed in a lightweight aluminum alloy shell, wherein an electromagnet group component consisting of an iron core and a coil, and a circuit adapter board connected to the coil lead are arranged in the shell, and the characteristics are: comprising an iron core fixing frame detachably connected to the shell, a plurality of pin holes are opened on the top surface of the iron core fixing frame, a plurality of the iron cores are inserted into the pin holes one by one at the same depth, and the circuit adapter board is embedded and fixed to the relatively outer side of the iron core fixing frame. The present invention adopts a threaded connection between the iron core fixing frame and the shell, so that the iron core fixing frame can be independent, which greatly simplifies the structure of the needle selector, simplifies the shell processing technology, and also reduces the complexity of assembly and maintenance, which only needs to be tightened or unscrewed by threading; at the same time, the iron core fixing frame is independent, and a series of structures are designed so that the exposed height of all the iron cores pressed into the iron core fixing frame by riveting is completely consistent, which greatly improves the positioning accuracy of the iron core.

Description

Technical Field

[0001] The invention relates to the technical field of knitting machinery, in particular to an iron core fixing structure for a needle selector and an installation method thereof. Background Art

[0002] With the development of signal processing and sensor technology, computer control and detection technology are widely used in knitting equipment. As the core accessories of knitting equipment, electronic needle selectors are also in a critical period of innovation. In recent years, the high speed of knitting production and the high-end fabric products have put forward higher requirements on knitting equipment, especially on the performance indicators of electronic needle selectors such as working speed, reliability and consistency.

[0003] For example, the patent number is: CN211595953U, named "needle selector", which discloses a shell, a magnetic isolation structure and multiple groups of electromagnetic coils; the magnetic isolation structure and the electromagnetic coils are fixedly connected to the shell, and the magnetic isolation structure has a groove for accommodating the electromagnetic coil, and the groove corresponds to the electromagnetic coil one by one, which makes it easy to improve the magnetic field strength and maintain the original magnetic field direction of the electromagnetic coil, thereby making the tool head more accurate.

[0004] However, the problem with this design is that during the assembly of the needle selector, since multiple solenoid devices and multiple cutter heads need to be set up correspondingly, a certain installation accuracy needs to be maintained during the assembly process. Therefore, another patent number is CN209481936U, named "Needle Selector", which improves this problem. It discloses that the needle selector includes multiple mounting frames and multiple mounting positions set in the shell. The mounting frames are used to match the solenoid coils one by one, and the mounting positions are used to match the mounting frames one by one. The solenoid coils are fixed in the shell through the corresponding matching of the mounting frames and the mounting positions, thereby ensuring the assembly accuracy of the needle selector and effectively improving the assembly efficiency.

[0005] Considering the actual processing and production operation level, the mounting frame and mounting position are designed and processed in an integrated manner with the shell, which makes the processing technology more complicated, the production cost is high, and there are certain limitations in mass production. At the same time, if there is a slight deviation in the size during general mass production, it is easy to cause the entire batch of needle selectors to be scrapped due to dimensional accuracy problems. In order to solve the above problems, this case was born. Summary of the invention

[0006] Technical issues solved

[0007] In view of the deficiencies in the prior art, the present invention provides an iron core fixing structure for a needle selector and an installation method thereof, which solve the problems raised in the above-mentioned background technology.

[0008] Technical Solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an iron core fixing structure for a needle selector, including a lightweight aluminum alloy shell, an electromagnet group component consisting of an iron core and a coil, and a circuit adapter board connected to the coil lead are arranged in the shell, an iron core fixing frame is detachably connected to the shell, a plurality of pin holes are opened on the top surface of the iron core fixing frame, and a plurality of the iron cores are inserted into the pin holes one by one at the same depth, and the circuit adapter board is embedded and fixed to the relatively outer side of the iron core fixing frame, and is adjacent to the iron core fixing frame.

[0010] Preferably, the pin hole passes through the core fixing frame from top to bottom, and the height of the core fixing frame at the bottom of the pin hole is higher than that on both sides to form a recess on the bottom of the pin hole. The bottom end of the core is flush with the bottom end of the pin hole, so that the exposed height of each core is even.

[0011] Preferably, the core fixing frame is provided with a protrusion horizontally outwardly at the end surface of each pin hole.

[0012] Preferably, a notch is formed inwardly on both sides of the core fixing frame, a crossbeam is provided in the valve body, and the size of the two notches symmetrically fitted by the two core fixing frames is exactly equal to the width of the crossbeam.

[0013] Preferably, the two sides of the crossbeam are respectively provided with double holes, and the core fixing frame is provided with inner and outer double holes, wherein the two outer holes are connected to the crossbeam by bolts, and the two inner holes are fixed to the threaded holes opened on the outer circuit adapter plate by bolts.

[0014] Preferably, a magnetic conductive frame is provided in the shell, and ears are protruded on both sides of the inner wall of the shell, a threaded hole is opened on the ear, and hole positions corresponding to the threaded holes are opened on both sides of the magnetic conductive frame. After the holes are positioned, the magnetic conductive frame is fixed by bolts.

[0015] A method for installing an iron core fixing structure for a needle selector comprises the following steps:

[0016] S1. First, threaded holes are opened on the lifting ears in the shell through the holes at the two ends of the magnetic frame, and the magnetic frame is positioned and fixed by bolts;

[0017] S2. All the cores are inserted into the pin holes with the same depth. After the coil is inserted into the exposed core, the gaps of the two core fixing frames after symmetrical fitting can accommodate the corresponding crossbeams and are placed relatively above the crossbeams. At this time, the two outer holes opened on the core fixing frames are quickly assembled with the crossbeams by screws. At this time, the coil is just placed in the embedded groove on the magnetic frame;

[0018] S3, since the core fixing frame has a horizontal outward projection at the end surface of each pin hole, and the height at the bottom surface of the pin hole is higher than the opposite sides, a recess is formed on the bottom surface of the pin hole, and then the circuit adapter board is embedded and positioned on the relatively outer side of the core fixing frame, at this time, the two inner holes on the core fixing frame and the threaded holes on the outer circuit adapter board are fixed by bolts;

[0019] S4. Lead out the coil leads and weld them into the circuit adapter board. Since the core fixing frame is adjacent to the circuit adapter board, the external part of the leads can be almost ignored. Finally, complete the subsequent conventional assembly.

[0020] Beneficial Effects

[0021] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: the present invention provides a core fixing structure for a needle selector and its installation method, which adopts a threaded connection between a core fixing frame and a shell, so that the core fixing frame can be independent, greatly simplifying the structure of the needle selector, simplifying the shell processing technology, and also reducing the complexity of assembly and maintenance, which only needs to be tightened or unscrewed by threading. At the same time, the core fixing frame is independent, and a series of structures are designed to make the exposed height of all the cores pressed into the core fixing frame by riveting completely consistent, which greatly improves the positioning accuracy of the core, thereby greatly improving the operating frequency of the needle selector, which can reach 120Hz. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the appearance of the iron core fixing structure for the needle selector of the present invention;

[0023] Figure 2 This is a front view schematic diagram of the internal structure of the iron core fixing structure for the needle selector of the present invention after the cover plate is removed;

[0024] Figure 3 This is a schematic diagram of a disassembled iron core fixing structure for a needle selector of the present invention;

[0025] Figure 4 It is a schematic diagram of the use state of the iron core fixing frame structure of the iron core fixing structure for the needle selector of the present invention;

[0026] Figure 5 It is a side schematic diagram of the iron core fixing frame structure of the iron core fixing structure for the needle selector of the present invention.

[0027] In the figure: 1. needle selection cutter head; 2. housing; 3. cover plate; 4. cutter head baffle; 5. cylindrical pin; 6. coil; 7. circuit board; 8. circuit adapter board; 9. iron core; 10. iron core fixing frame; 11. magnetic frame; 12. threaded hole 2; 13. inner hole position; 14. embedded groove; 15. protrusion; 16 pin hole; 17. crossbeam; 18. outer hole position; 19. notch; 20. recess. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below through the accompanying drawings and examples.

[0029] like Figure 1-5 As shown: a core fixing structure for a needle selector, including a shell 2, in which a plurality of solenoid coils 6 and a plurality of needle selection cutter heads 1 are arranged. The needle selection cutter heads 1 can rotate relative to the shell 2, and the electromagnet group components are arranged in a one-to-one correspondence with the needle selection cutter heads; after being energized, the electromagnet group components can be used to drive the corresponding needle selection cutter heads to rotate relative to the shell 2 to adjust the angle of the needle selection cutter heads 1, thereby realizing needle selection.

[0030] A detachable core fixing frame 10 is provided in the housing 2, and a pin hole is opened on the top surface of the core fixing frame 10. The core 9 is riveted into the pin hole 16 in sequence by riveting to complete positioning and fixing, and the coil 6 is sleeved on the core.

[0031] In actual production, since the depth of multiple magnetic cores 9 riveted to the pin holes 16 is difficult to control, height deviations are easily generated between each other, resulting in a serious bias in production accuracy, which increases the difficulty of mass production. Therefore, the pin holes 16 are through holes that penetrate the upper and lower sides of the core fixing frame 10. At the same time, the height of the core fixing frame 10 at the bottom of the pin holes is higher than that of the two sides, that is, multiple notches 20 are formed. During production, gaskets can be placed at the notches 20 and fit the bottom surface of the pin holes 16, so that the magnetic cores 9 are all riveted to the bottom of the pin holes 16, the position height between each magnetic core 9 is aligned, and the difficulty of riveting is reduced.

[0032] Furthermore, due to the opening of the pin hole 16, the edge of the core fixing frame 10 is relatively thin, and the pin hole 16 and the magnetic core 9 are interference-fitted, which can easily cause damage to the edge after long-term use. Therefore, the core fixing frame 10 is horizontally formed with a protrusion outward at the end surface of the pin hole 16 to provide greater thickness support, and the force acting on the pin hole 16 is more uniform.

[0033] In the design of the structure, considering the problem of rapid assembly, two core fixing frames 10 are symmetrically arranged in the valve body, and are arranged opposite to each other at the head and tail. Secondly, a notch 19 is formed on the inner side of the core fixing frame 10, and a cross beam 17 is provided in the valve body. After the two core fixing frames 10 are symmetrically fitted, the notch 19 can just accommodate the corresponding cross beam 17, and is fixed on the cross beam by screws to achieve rapid assembly.

[0034] Specifically, two holes are provided on both sides of the crossbeam, and inner and outer double holes are provided on the core fixing frame 10, wherein the outer hole 18 is connected to the crossbeam 17 by screws. The inner hole 13 is fixed to the threaded hole 12 of the outer circuit adapter plate 8 by screws (see attached Figure 2 ), forming a fixation for the entire core fixing frame 10.

[0035] It should be noted that this fixed assembly method can also solve another problem, that is, the problem of leads. In conventional designs, most have not overcome the phenomenon of external leads. When used for a long time, the external leads are prone to friction with components and cause wear, which in turn causes short circuits or open circuits, resulting in a significant impact on the quality of the needle selector. In this solution, since the circuit adapter board 8 can be smoothly buckled with the core fixing frame 10 (with the help of the structural design of the recess 20 and the protrusion 15), the leads of the coil can be directly led out and welded to the circuit adapter board 8, and there is almost no problem of external leads, and the product quality control specifications are higher.

[0036] It also includes a magnetic frame 11, which is detachably placed in the housing 2. Specifically, the housing inner wall is provided with lifting ears on both sides, and a threaded hole is provided on the lifting ears. A connecting hole is provided on both sides of the magnetic frame 11 corresponding to the threaded hole. The hole is limited to fix the magnetic frame 11. The magnetic frame 11 is provided with embedded grooves 14 at intervals for the iron core 9 and the coil to be placed.

[0037] This solution further explains the assembly of the needle selector, as shown below.

[0038] 1. Assembly relationship ①: In the design of the needle selection cutter head 1, a cylindrical pin hole is reserved in the middle of the needle selection cutter head 1, which can penetrate the cylindrical pin 5, so that the needle selection cutter head 1 rotates around the cylindrical pin 5. At the same time, two permanent magnets with different magnetic properties are embedded on one side of the needle selection cutter head 1 on a plane to provide driving force for the subsequent rotation of the needle selection cutter head 1. Figure 1 , Figure 2 It can be seen that the middle of the needle selection cutter head 1 is penetrated by a cylindrical pin 5, which is evenly riveted to one side of the housing 2 through the cylindrical pin 5, and the cutter head baffle 4 adopts an evenly distributed hollow design, which is fastened to the end face of the housing 2 by screw connection to constrain the rotation angle of the needle selection cutter head 1. Similarly, the magnetic frame 11 is also fastened inside the housing 2 by screw connection.

[0039] 2. Assembly relationship ②: The electromagnet assembly is composed of a coil 6, a magnetic core 9, and a core fixing frame 10. The magnetic core 9 is riveted into the corresponding pin hole on the top surface of the core fixing frame 10 by riveting, and the required coil 6 is sleeved on the magnetic core 9, so that the entire assembly forms a component that can be called an electromagnet assembly. At the same time, in order to facilitate the fixing of the electromagnet assembly, the circuit adapter board 8 and the housing 2 can be connected by screws, and then connected to the circuit board 7 through the circuit adapter board 8's own connector, and finally the cover plate 3 is assembled.

[0040] The core is made of permanent magnetic material with reliable magnetic force to ensure the accuracy of the movement position. At the same time, through electromagnetic switching, the magnetization cycle is faster and the response time is shorter.

[0041] 3. Initial position: The electromagnet assembly is not energized. Since the internal iron core is a permanent magnet core with magnetic properties, the needle selection cutter head 1 moves in one direction under the action of the magnetic attraction and repulsion forces of the magnet and ends at a side of the hollow area inside the cutter head baffle 4.

[0042] Power-on position: The law of electromagnetic induction shows that when current passes through the electromagnet assembly, a magnetic field can be generated. The magnetic field acts on the iron core instantaneously, causing the iron core to be magnetized and maintain the magnetism corresponding to the direction of the coil power-on. In other words, by changing the power-on direction (positive power-on, square power-on), the iron core magnetism can be specified. When the needle selection cutter head 1 needs to move in the opposite direction, the circuit board 7 is powered on through the circuit interface I, and the electromagnet assembly 9 is controlled by the circuit board 7 to power on, changing the magnetism of the iron core in the initial position, so that the direction of the magnetic force is opposite, and the needle selection cutter head 1 moves in the opposite direction. The same movement ends at the other side of the hollow area inside the cutter head baffle 4; when the circuit board 7 controls the electromagnet assembly to be powered off, the whole returns to the initial position.

[0043] The above-mentioned embodiments are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the scope of the invention. The technical scope of this new type of use is not limited to the content in the specification, and its protection scope must be determined according to the scope of the claims.

Claims

1. An iron core fixing structure for a needle selector, which is placed in a lightweight aluminum alloy shell, and an electromagnet group component consisting of an iron core and a coil, and a circuit adapter board connected to the coil lead are arranged in the shell, Features: It comprises an iron core fixing frame detachably connected to the shell, a plurality of pin holes are provided on the top surface of the iron core fixing frame, a plurality of the iron cores are inserted into the pin holes correspondingly at the same depth, the circuit adapter plate is embedded and fixed on the relatively outer side of the iron core fixing frame, and is adjacent to the iron core fixing frame; the pin holes pass through the iron core fixing frame from top to bottom, the height of the iron core fixing frame at the bottom surface of the pin holes is higher than that at the two sides, so as to form a notch on the bottom surface of the pin holes, the bottom end of the iron core is flush with the bottom end of the pin holes, so as to realize that the exposed height of each iron core is even; the iron core fixing frame is horizontally formed with a protrusion outward at the end surface position of each pin hole; A crossbeam is provided in the shell, and an inner hole position and an outer hole position are provided on the iron core fixing frame, wherein the two outer hole positions are connected to the crossbeam by bolts, and the two inner hole positions are fixed to threaded holes 2 provided on the outer circuit adapter plate by bolts; a magnetic conductive frame is provided in the shell, and lifting ears are provided on protrusions on both sides of the inner wall of the shell, and threaded hole 1 is provided on the lifting ears, and hole positions corresponding to threaded hole 1 are provided on both sides of the magnetic conductive frame, and the magnetic conductive frame is fixed by bolts after the hole positions are positioned, and embedding grooves are provided at intervals on the magnetic conductive frame for the iron core and the coil to be placed.

2. The iron core fixing structure for a needle selector according to claim 1, Features: A notch is formed inwardly on both sides of the iron core fixing frame, and the size of the two notches symmetrically fitted by the two iron core fixing frames is exactly equal to the width of the crossbeam.

3. A method for installing a core fixing structure for a needle selector according to any one of claims 1 to 2, Features: The following steps are included: S1. First, threaded holes are opened on the lifting ears in the shell through the holes at the two ends of the magnetic frame, and the magnetic frame is positioned and fixed by bolts; S2. All the cores are inserted into the pin holes with the same depth. After the coil is inserted into the exposed core, the gaps of the two core fixing frames after symmetrical fitting can accommodate the corresponding crossbeams and are placed relatively above the crossbeams. At this time, the two outer holes opened on the core fixing frames are quickly assembled with the crossbeams by screws. At this time, the coil is just placed in the embedded groove on the magnetic frame; S3, since the core fixing frame has a horizontal outward projection at the end surface of each pin hole, and the height at the bottom surface of the pin hole is higher than the opposite sides, a recess is formed on the bottom surface of the pin hole, and then the circuit adapter board is embedded and positioned on the relatively outer side of the core fixing frame, at this time, the two inner holes on the core fixing frame and the threaded holes on the outer circuit adapter board are fixed by bolts; S4. Lead out the coil leads and weld them into the circuit adapter board, and finally complete the subsequent conventional assembly.

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