Terminal internal wiring stranding machine

Abstract

The application discloses a terminal internal line stranding machine, and relates to the technical field of line stranding, which is characterized in that: a collecting pipe is arranged at the top of a machine table between a pay-off mechanism and a stranding mechanism, and a plurality of wires are gathered into one wire in the collecting pipe; an elastic clamping assembly is arranged at the outlet of the collecting pipe, and the elastic clamping assembly clamps and fixes the wires in sections through elastic extension and contraction to meet the needs of section-by-section stranding; when the stranding mechanism pulls the wire gathered into one wire to move away from the collecting pipe, the elastic clamping assembly is controlled by a pay-off control device to release the fixation of the wire, and the effect is that the clamping system only needs to be equipped with a transmission device for detecting the movement and movement direction of the collecting pipe, the production cost of the stranding machine can be effectively reduced, and the elastic clamping assembly clamps the wire through elastic extension and contraction, so that the wire has a certain buffer space when clamped, and direct rigid clamping is avoided to prevent the wire from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wire twisting, and more particularly to a terminal internal wire twisting machine. BACKGROUND

[0002] In the field of electronic device manufacturing, etc., as an important element for connecting electrical lines, the internal wire (connection wire, shielding wire, ground wire, etc.) of the terminal usually needs to be twisted to improve the conductivity, flexibility and mechanical strength of the wire.

[0003] The existing twisting machine generally uses a segmented cutting type twisting method when twisting the internal wire of the terminal. Specifically, a certain length of wire is first pulled out by the twisting mechanism, and then winding and twisting operations are performed. After the twisting is completed, the segment of wire is cut off, and then the next segment of wire is pulled out to repeat the above twisting and cutting process. In this process, the cutting part of the wire must be clamped and fixed by a clamping mechanism every time the twisting and cutting operations are performed.

[0004] However, the common clamping method at present is mainly hydraulic or pneumatic (rigid clamping, no buffer space), which is easy to damage the wire. This is because the wire used in the internal wire of the terminal is usually fragile and more difficult to withstand the pressure caused by hydraulic or pneumatic clamping than ordinary wire, so it is easy to be crushed (for example: to ensure excellent conductivity, the internal wire of the terminal often uses high-purity metal materials such as high-purity copper. However, such high-purity metal improves the conductivity while its mechanical properties such as hardness and toughness are relatively single. In contrast, ordinary wire may add some alloy elements in the production process to improve the overall performance, although the conductivity is slightly sacrificed, but the mechanical properties are improved).

[0005] Moreover, in order to make the wire be pulled out smoothly when the twisting mechanism pulls the wire, the wire needs to be first released from the fixing; after pulling out enough length, the wire needs to be clamped again to ensure that the wire is wound within the appropriate length range, thereby ensuring the quality of the twisting. The control system in the prior art often uses action sequence and time control to realize automatic control, which is specifically reflected in that from the release of the wire fixing, to the pulling out of a certain length of wire, to the re-clamping of the wire, and the subsequent twisting operation, all need to be strictly according to the predetermined time sequence and accurate time interval, in the operation, the starting time and duration of each action need to be accurately controlled, which greatly increases the complexity of the system, a large number of sensors (such as time sensors, position sensors, proximity sensors, etc.) are needed, which seriously increases the production cost of the twisting machine, making it difficult to be widely applied.

[0006] Therefore, in order to solve the above technical problems, the application provides a terminal internal circuit stranding machine. SUMMARY

[0007] In view of the deficiencies of the prior art, the application aims to provide a terminal internal circuit stranding machine.

[0008] To achieve the above object, the application provides the following technical scheme: a terminal internal circuit stranding machine, comprising a machine table, a plurality of wire feeding mechanisms and a stranding mechanism arranged on the top of the machine table, the plurality of wire sources are provided by the wire feeding mechanisms, and the plurality of wires are collected and then stranded by the stranding mechanism, the terminal internal circuit stranding machine further comprises:

[0009] a collecting pipe arranged at the top of the machine table between the wire feeding mechanisms and the stranding mechanism, and the plurality of wires are collected into one wire in the collecting pipe;

[0010] an elastic clamping assembly arranged at the outlet of the collecting pipe, which clamps and fixes the wire in sections by elastic extension to meet the need of stranding in sections;

[0011] a wire feeding control device, which controls the elastic clamping assembly to release the fixation of the wire when the wire collected into one wire is pulled by the stranding mechanism to move away from the collecting pipe.

[0012] Preferably, the elastic clamping assembly comprises a shell fixed on the upper and lower edges of the opening part of the collecting pipe, and the opposite surfaces of the two shells are open, an electromagnet is arranged on the inner side of the shell opposite to the opening, a ferrous alloy is arranged near the opening part of the shell, an annular plate is fixedly connected to the outer side wall of the ferrous alloy and the electromagnet, a plurality of rubber springs arranged in a circumferential array are arranged between the annular plates, the bottom of the ferrous alloy is fixed to a clamping plate through a vertical rod, the shell is fixed to the top of the machine table through a support frame, guide rails A are fixedly connected to the inner sides of the shell, and the two sides of the annular plate are slidably connected to the guide rails A through sliding blocks A.

[0013] Preferably, the wire feeding control device comprises:

[0014] a pair of light sensors arranged on the collecting pipe, which are used to detect the running state of the wire in the collecting pipe in real time, and send a signal to a microprocessor A when the wire collected into one wire is pulled by the stranding mechanism to move away from the collecting pipe or stops moving in this direction;

[0015] a microprocessor A, which sends a signal to an actuator A to turn on or off the electromagnet according to the pair of light sensors;

[0016] an actuator A, which turns on or off the electromagnet according to the signal of the microprocessor A.

[0017] Preferably, the wire releasing mechanism comprises a connecting plate fixed on the top end of the machine table, a motor A is installed on the top end of the connecting plate, a mounting frame detachably connected with the wire reel is installed at the transmission part of the motor A, a positioning roller and a tensioning roller are also installed on the top end of the machine table, the bottom end of the positioning roller is rotatably connected with a supporting rod through a bearing, the bottom of the supporting rod is fixed with the top end of the connecting plate, and a displacement assembly is installed on the bottom of the tensioning roller.

[0018] Preferably, the displacement assembly comprises a bottom plate connected with the top end of the connecting plate through a supporting plate, the front and rear sides of the bottom plate are connected with a frame-shaped plate through side plates, a lead screw driven by a motor B is installed in the frame-shaped plate, a rod sleeve is threadedly connected on the outer side wall of the lead screw, the bottom of the tensioning roller is rotatably connected with the top end of the rod sleeve through a bearing, guide rails B are fixedly connected with the top end of the bottom plate, and the bottom end of the rod sleeve is slidably connected in the guide rails B through slide blocks B.

[0019] Preferably, a tension control device is installed on the displacement assembly, which automatically adjusts the position of the tensioning roller according to the actual tension required by the tensioning roller, so as to maintain the stable wire releasing of the wire releasing mechanism.

[0020] Preferably, the tension control device comprises:

[0021] a tension sensor arranged on the tensioning roller, which is used for detecting the tension of the wire passing through the tensioning roller in real time and sending a signal to a microprocessor B;

[0022] a microprocessor B, which sends a signal for driving the motor B to operate to an actuator B according to the signal of the tension sensor, wherein the signal includes the time, the rotating speed and the rotating direction of the driving of the motor B;

[0023] an actuator B, which drives the motor B to operate according to the signal of the microprocessor B.

[0024] Preferably, spring switches for driving the operation of a buzzer are installed on both sides of the frame-shaped plate, and the buzzer is installed on the surface of the frame-shaped plate.

[0025] Preferably, the mounting frame comprises a rotating disc fixed on the transmission shaft of the motor A, a positioning rod fixedly connected with the top end of the rotating disc for inserting the center rod on the wire reel, a screw rod fixedly connected with the head of the positioning rod, a through hole for the screw rod to pass through is arranged on the top of the center rod, and a nut is threadedly connected on the outer side wall of the screw rod.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] The application carries out paying-off through multiple paying-off mechanisms, manually pulls multiple wires into the collecting pipe and out from the other end of the collecting pipe to be clamped and fixed by the elastic clamping assembly, the wires are collected into a strand in the collecting pipe, then the wire strand is pulled by the stranding mechanism to move away from the collecting pipe, in this process, the elastic clamping assembly is controlled by the paying-off control device to release the fixation of the wire, after the wire stops moving away from the collecting pipe, the elastic clamping assembly fixes the wire again, then the pulled wire is wound by the stranding mechanism, after the stranding is completed, the section is cut off, then the next section of wire is pulled out to repeat the above processes, so that the control clamping system only needs to be equipped with a transmission device for detecting the movement and movement direction of the collecting pipe, the production cost of the stranding machine can be effectively reduced, and the elastic clamping assembly clamps the wire through elastic stretching and contraction, so that the wire has a certain buffer space when clamped, avoiding direct rigid clamping to prevent the wire from being crushed, thereby solving the problems of high cost and easy crushing of the wire in the background art;

[0028] The center rod on the wire reel is inserted into the positioning rod, after the insertion is completed, the screw rod at the top thereof is pulled out from the top of the center rod, then the nut is installed on the screw rod by rotating the nut clockwise, the nut moves downward along the screw rod and slowly abuts against the top end of the center rod, so that the wire reel can be installed on the mounting frame, and vice versa, the nut is removed, the center rod of the wire reel is pulled out from the positioning rod, so that the wire reel can be disassembled, and the disassembly and assembly are convenient;

[0029] The displacement assembly is provided with a tension control device, the tension control device detects the tension of the wire on the tensioning roller to obtain the actual tension required by the tensioning roller, and then drives the displacement assembly to automatically adjust the position of the displacement assembly according to the actual tension required by the tensioning roller, so as to adjust the tension of the tensioning roller and maintain stable paying-off of the paying-off mechanism.

[0030] When the tension adjustment exceeds the adjustment range of the displacement assembly, the rod sleeve contacts the spring switch to press the spring switch, so that the buzzer is turned on to alarm and enable the staff to find and manually adjust in time to maintain stable conveying of the wire. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. In the drawings:

[0032] Figure 1 It is a schematic diagram of the overall specific structure of the application;

[0033] Figure 2 It is a schematic diagram of the specific structure of the side part of the application;

[0034] Figure 3 A partial structure of the application Figure 2 A partial structure of the application

[0035] Figure 4 A partial structure of the application

[0036] Figure 5 A partial structure of the application

[0037] Figure 6 A partial structure of the application Figure 5 A partial structure of the application

[0038] Figure 7 A partial structure of the application

[0039] Figure 8 A partial structure of the application

[0040] Figure 9 A partial structure of the application Figure 8 A partial structure of the application

[0041] Figure 10 A partial structure of the application

[0042] Figure: 1, machine table;

[0043] 2, pay-off mechanism; 201, connecting plate; 202, motor A; 203, mounting bracket; 2031, rotating disc; 2032, positioning rod; 2033, screw rod; 204, positioning roller; 205, tensioning roller; 206, support rod; 207, displacement assembly; 2071, bottom plate; 2072, side plate; 2073, frame plate; 2074, motor B; 2075, lead screw; 2076, rod sleeve; 2077, guide rail B; 2078, sliding block B; 2079, support plate; 208, wire reel; 2081, center rod; 2082, through hole;

[0044] 3, twisting mechanism;

[0045] 4, collection pipe;

[0046] 5, elastic clamping assembly; 501, shell; 502, electromagnet; 503, ferrous alloy; 504, annular plate; 505, clamping plate; 506, support frame; 507, guide rail A; 508, sliding block A; 509, vertical rod; 510, rubber spring;

[0047] 6, pay-off control device; 7, tension control device; 8, spring switch; 9, buzzer. DETAILED DESCRIPTION

[0048] Example 1

[0049] As Figures 1 to 3 shown, the application provides a terminal internal circuit stranding machine, comprising a machine table 1, and a plurality of wire feeding mechanisms 2 and a stranding mechanism 3 arranged on the top of the machine table 1, the plurality of wire feeding mechanisms 2 provide a plurality of wire sources, and the plurality of wires are collected and then stranded by the stranding mechanism 3, the terminal internal circuit stranding machine further comprises: a collecting pipe 4 arranged at the top of the machine table 1 and located between the wire feeding mechanisms 2 and the stranding mechanism 3; an elastic clamping assembly 5 arranged at the outlet of the collecting pipe 4, which clamps the wires in sections by elastic extension to meet the needs of stranding in sections; and a wire feeding control device 6, which controls the elastic clamping assembly 5 to release the fixation of the wires when the stranding mechanism 3 pulls the wires collected into a strand to move away from the collecting pipe 4.

[0050] In use, the wires are fed by the plurality of wire feeding mechanisms 2, and then manually pulled into the collecting pipe 4 and out of the other end of the collecting pipe 4 to be clamped and fixed by the elastic clamping assembly 5, the wires are collected into a strand in the collecting pipe 4, and then pulled by the stranding mechanism 3 to move away from the collecting pipe 4 (i.e. to move from the collecting pipe 4 to the stranding mechanism 3), in this process, the elastic clamping assembly 5 is controlled by the wire feeding control device 6 to release the fixation of the wires, and then the elastic clamping assembly 5 fixes the wires again after the wires stop moving away from the collecting pipe 4, and then the pulled wires are wound and stranded by the stranding mechanism 3, and after the stranding is completed, the section is cut off, and then the next section of wires is pulled out to repeat the above processes of stranding and cutting (it should be noted that a part of the pulled wires needs to be left out to enable the stranding mechanism 3 to successfully pull the next section of wires after the cutting tool cuts, and the stranding mechanism 3 has a clamping part to clamp the small part of the wires, and then pull them), so that the control system only needs to be equipped with a transmission device for detecting the movement and direction of the collecting pipe 4, which can effectively reduce the production cost of the stranding machine, and the elastic clamping assembly 5 clamps the wires by elastic extension, so that the wires have a certain buffer space when clamped, avoiding direct rigid clamping to cause the wires to be crushed.

[0051] Embodiment 2

[0052] As Figures 1 to 4 shown, this embodiment specifically introduces the structure of the elastic clamping assembly 5 and the wire feeding control device 6 in embodiment 1:

[0053] The elastic clamping assembly 5 comprises a shell 501 fixed on both sides of the opening part of the collecting pipe 4, and the opposite faces of the two are open, the inside of the shell 501 is provided with an electromagnet 502 on the face opposite to the opening, the inside of the shell 501 is provided with an iron alloy 503 near the opening part of the shell 501, the outer walls of the iron alloy 503 and the electromagnet 502 are fixedly connected with annular plates 504, a plurality of rubber springs 510 arranged in a circumferential array are arranged between the annular plates 504, the bottom of the iron alloy 503 is fixed with a clamping plate 505 through a vertical rod 509, the shell 501 is fixed with the top end of the machine table 1 through a support frame 506, the inside of the shell 501 is fixedly connected with guide rails A 507 on both sides, and the two sides of the annular plate 504 are slidably connected in the guide rails A 507 through sliding blocks A 508.

[0054] That is, when the two electromagnets 502 are in the closed state, no adsorption force is generated on the iron alloy 503, the plurality of rubber springs 510 drive the two iron alloys 503 to move to the middle part (that is, to move to the direction of the wire passing through the collecting pipe 4), the iron alloy 503 drives the sliding block A 508 to move downward, the sliding block A 508 slides downward along the guide rail A 507 to maintain the linear movement of the iron alloy 503, the iron alloy 503 drives the vertical rod 509 to move downward, and the two clamping plates 505 move to the middle part driven by the vertical rod 509, so as to clamp and fix the wire collected into a strand. Conversely, when the electromagnet 502 is running, since it is opposite to the iron alloy 503, an adsorption force is generated on the iron alloy 503, so as to drive the iron alloy 503 and the annular plate 504 thereon to move upward (it should be noted that the annular plate 504 is made of plastic, and it and the rubber spring 510 will not be attracted by the electromagnet 502), so as to compress the rubber spring 510, and finally drive the two clamping plates 505 to move to both sides, thereby releasing the fixation of the wire.

[0055] The wire releasing control device 6 comprises a pair of photoelectric sensors, a microprocessor A and an actuator A.

[0056] When the wire control device 6 is not in operation, the upper and lower electromagnets 502 are in the closed state, and the electromagnets 502 will not generate an attraction force on the ferrous metal 503 directly below them, so that the wire is clamped and fixed by the clamping plate 505; conversely, when the phototransmitter detects that the wire mechanism 3 pulls the wire gathered into a strand to move away from the gathering pipe 4 (i.e. from the gathering pipe 4 to the wire mechanism 3, at this time the electromagnet 502 is turned on), or detects that the wire stops moving in this direction (at this time the electromagnet 502 is turned off), it will send a corresponding signal to the microprocessor A, and the microprocessor A will send a signal to the actuator A to turn on or turn off the electromagnet 502 according to the preset logic program; after receiving the signal from the microprocessor A, the actuator A will turn on or turn off the electromagnet 502, so that when the wire mechanism 3 pulls the wire to move away from the gathering pipe 4, the elastic clamping assembly 5 releases the clamping of the wire, and when it stops pulling in this direction, the elastic clamping assembly 5 fixes the wire again. The entire process only uses one sensor, which can effectively reduce the production cost of the wire twisting machine.

[0057] The phototransmitter is composed of a transmitter and a receiver. The transmitter emits a beam of light, usually infrared or visible light. When there is no object blocking, the receiver can receive the light signal emitted by the transmitter and generate a corresponding electrical signal. When the wire mechanism 3 pulls the wire to move away from the gathering pipe 4 and enters the light path between the transmitter and the receiver, it will block the light beam, causing the light signal received by the receiver to weaken or disappear, and the electrical signal generated by the receiver will also change. The signal processing circuit inside the sensor converts this change into an on-off signal output, thereby achieving detection of the movement of the wire. In actual application, the phototransmitter used to detect the movement of the wire can be an Omron EZ-LS63 or a Keyence EX-106.

[0058] It should be noted that in order to prevent the wire from rebounding, the wire control device 6 will only drive the electromagnet 502 to operate to release the clamping when the wire is running in the specified processing direction. The rebounding direction is opposite to the processing direction (the processing direction is the direction from the gathering pipe 4 to the wire mechanism 3, and the rebounding direction is the direction from the gathering pipe 4 to the wire mechanism 2), so the control device will not trigger the operation of the electromagnet 502.

[0059] Example 3

[0060] As Figure 1 , Figure 2 and Figures 5 to 10As shown, the embodiment gives the specific structure of the pay-off mechanism 2 in Example 1: the pay-off mechanism 2 comprises a connecting plate 201 fixed at the top end of the machine table 1, the top end of the connecting plate 201 is provided with a motor A 202, the transmission part of the motor A 202 is provided with a mounting frame 203 detachably connected with the wire reel 208, the top end of the machine table 1 is also provided with a positioning roller 204 and a tensioning roller 205, the bottom end of the positioning roller 204 is rotatably connected with a supporting rod 206 through a bearing, the bottom of the supporting rod 206 is fixed with the top end of the connecting plate 201, and the bottom of the tensioning roller 205 is provided with a displacement assembly 207.

[0061] The mounting frame 203 comprises a rotating disc 2031 fixed on the transmission shaft of the motor A 202, and the top end of the rotating disc 2031 is fixedly connected with a positioning rod 2032 for inserting the center rod 2081 on the wire reel 208, the head of the positioning rod 2032 is fixedly connected with a screw rod 2033, the top of the center rod 2081 is provided with a through hole 2082 for the screw rod 2033 to pass through, and the outer wall of the screw rod 2033 is threadedly connected with a nut.

[0062] That is, the center rod 2081 on the wire reel 208 is inserted into the positioning rod 2032, after the insertion is completed, the screw rod 2033 at the top thereof passes out from the top of the center rod 2081, then the nut is clockwise rotated to be installed on the screw rod 2033, the nut moves downward along the screw rod 2033 and slowly abuts against the top end of the center rod 2081, so that the wire reel 208 can be installed on the mounting frame 203, and vice versa, the nut is removed, the center rod 2081 of the wire reel 208 is pulled out from the positioning rod 2032, so that the wire reel 208 can be disassembled, and the disassembly and assembly are relatively convenient.

[0063] After the wire reel 208 with sufficient wire material wound thereon is installed on the mounting frame 203, the rotation of the mounting frame 203 is driven by the motor A 202, so as to drive the rotation of the wire reel 208 fixed thereon, the pay-off operation is performed, the pay-off end of the wire material passes through the tensioning roller 205 and is then output from the positioning roller 204 to the collecting pipe 4 (the positioning of the positioning roller 204 is used to ensure that the wire material paid out by each pay-off mechanism 2 can be output from the appropriate position), and then the multiple wires output from the positioning roller 204 are collected into one wire in the collecting pipe 4, in this process, the position of the tensioning roller 205 can be adjusted by the displacement assembly 207, so as to adjust the tension of the wire material to the appropriate position, so as to tension the wire material.

[0064] It should be noted that the motor A202 is a stepper motor, which cooperates with the position detection device. The stepper motor can convert the electric pulse signal into angular displacement or linear displacement. After receiving each pulse signal, the motor rotates a fixed angle. The position detection device, such as an encoder, monitors the position and rotation of the wire reel 208 in real time. When the wire reel 208 is detected to have a rotation trend or a position change due to force, the control system sends a pulse signal to the stepper motor to drive the stepper motor to rotate and pay off the wire, thereby realizing the automatic wire paying-off of the motor A202 (when the wire reel 208 is not under force, the motor A202 also stops running accordingly). This is the prior art, and therefore will not be discussed in detail.

[0065] The specific structure of the displacement assembly 207 is as follows: The displacement assembly 207 includes a bottom plate 2071 connected to the top end of the connecting plate 201 through a support plate 2079, the front and rear sides of the bottom plate 2071 are connected to a frame-shaped plate 2073 through side plates 2072, the inside of the frame-shaped plate 2073 is provided with a lead screw 2075 driven by a motor B 2074, the outer side wall of the lead screw 2075 is threadedly connected with a rod sleeve 2076, the bottom of the tensioning roller 205 is rotationally connected to the top end of the rod sleeve 2076 through a bearing, and the top end of the bottom plate 2071 is fixedly connected with a guide rail B 2077, and the bottom end of the rod sleeve 2076 is slidably connected in the guide rail B 2077 through a sliding block B 2078.

[0066] That is, the forward rotation or reverse rotation of the motor B 2074 is controlled through the control button, the clockwise or counterclockwise rotation of the lead screw 2075 is driven by the motor B 2074, the lead screw 2075 drives the back-and-forth movement of the rod sleeve 2076, the rod sleeve 2076 drives the back-and-forth movement of the sliding block B 2078, the sliding block B 2078 slides along the guide rail B 2077 to maintain the back-and-forth linear movement of the rod sleeve 2076, and the rod sleeve 2076 drives the back-and-forth movement of the tensioning roller 205, thereby adjusting the tension of the tensioning roller 205.

[0067] Further, the displacement assembly 207 is provided with a tension control device 7. The tension control device 7 detects the tension of the wire passing through the tensioning roller 205 to obtain the actual tension required by the tensioning roller 205, and drives the displacement assembly 207 to automatically adjust its position according to the actual tension required by the tensioning roller 205, thereby adjusting the tension (tension generated by the tensioning roller 205) of the tensioning roller 205 to maintain the stable paying-off of the wire paying-off mechanism 2.

[0068] The tension control device 7 is composed of a tension sensor, a microprocessor B and an actuator B. First, the tension sensor is arranged on the tension roller 205. It plays a vital role and can use a strain gauge type tension sensor, such as the ZSE40 series of SMC, Japan. The tension sensor works on the principle of strain gauge. When the wire passes through the tension roller 205 and generates tension, the elastic element in the tension sensor will be slightly deformed. The resistance of the strain gauge attached to the elastic element will change accordingly. The change of the resistance is converted into an electric signal through a Wheatstone bridge circuit. The electric signal is proportional to the size of the tension of the wire, thereby realizing real-time measurement of the tension of the wire. The sensor has high precision and good linearity, can accurately detect different sizes of tension, and has certain anti-interference ability, and can adapt to more complex industrial environments.

[0069] When the tension sensor detects the tension of the wire passing through the tension roller 205, it will send the detected signal to the microprocessor B in time. The microprocessor B, as the core of control, will analyze and process the signal received from the tension sensor according to the pre-set program and algorithm. The microprocessor B will compare the current detected tension value with the pre-set ideal tension value, calculate the adjustment required for the motor B 2074 according to the difference between the two and the trend of the tension change, and then send a signal to the actuator B to drive the motor B 2074 to run. The signal contains very specific information, including the running time, speed and direction of the motor B 2074. For example, if the detected tension is greater than the pre-set tension, the microprocessor B will send a signal to the actuator B to require the motor B 2074 to run at a certain speed and direction for a certain time to adjust the position of the tension roller 205, thereby reducing the tension of the wire. Conversely, if the tension is less than the pre-set tension, the microprocessor B will send a different signal to drive the motor B 2074 to rotate in the opposite direction with the corresponding speed and running time, so that the tension reaches the ideal state. The actuator B is the key component to realize the action of the motor B 2074. After receiving the signal from the microprocessor B, it will convert the control signal into actual action to accurately control the start, stop, speed, rotation direction and running time of the motor B 2074.

[0070] Moreover, the spring switch 8 for driving the buzzer 9 to run is installed on both sides of the inside of the frame-shaped plate 2073. The buzzer 9 is installed on the surface of the frame-shaped plate 2073, that is, when the tension adjustment exceeds the adjustment range of the displacement assembly 207, the rod sleeve 2076 will contact and press the spring switch 8, thereby turning on the buzzer 9 and alarming to enable the staff to find and manually adjust in time to maintain the stable conveying of the wire.

[0071] It should be noted that the wire paying-out control device 6 and the tension control device 7 in the present application are both connected to independent external power supplies for power supply.

[0072] It should be noted that the wire paying-out control device 6 and the tension control device 7 in the present application are both connected to independent external power supplies for power supply. The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any person skilled in the art can easily implement the present application according to the drawings and the above description; however, any equivalent changes, modifications and evolutions made by those skilled in the art within the scope of the technical solutions of the present application, using the above disclosed technical content, are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolutions made according to the essence of the present application to the above embodiments are still within the protection scope of the technical solutions of the present application.

Claims

1. A terminal internal wire stranding machine, comprising a machine table (1), and a plurality of wire feeding mechanisms (2) and a stranding mechanism (3) arranged on the top of the machine table (1), a plurality of wire sources are provided by the wire feeding mechanisms (2), and the plurality of wires are stranded by the stranding mechanism (3) after being gathered, characterized in that: The terminal internal circuit stranding machine further comprises: A collecting pipe (4) is arranged at the top of the machine table (1) between the wire feeding mechanism (2) and the stranding mechanism (3), and a plurality of wires are collected into one wire in the collecting pipe (4); An elastic clamping assembly (5) is arranged at the outlet of the collecting pipe (4), and the wires are clamped and fixed in sections by elastic extension to meet the needs of stranding in sections; The elastic clamping assembly (5) comprises a shell (501) fixed on the upper and lower edges of the opening of the collecting pipe (4), and the opposite surfaces of the two are open, an electromagnet (502) is arranged on the inner surface opposite to the opening of the shell (501), a ferrous alloy (503) is arranged at the opening of the shell (501), an annular plate (504) is fixedly connected to the outer side wall of the ferrous alloy (503) and the electromagnet (502), a plurality of rubber springs (510) arranged in a circumferential array are arranged between the annular plates (504), the bottom of the ferrous alloy (503) is fixed to a clamping plate (505) through a vertical rod (509), the shell (501) is fixed to the top of the machine table (1) through a support frame (506), guide rails A (507) are fixedly connected to the inner sides of the shell (501), and the two sides of the annular plate (504) are slidably connected to the guide rails A (507) through sliding blocks A (508). The wire feeding control device (6) controls the elastic clamping assembly (5) to release the fixation of the wires when the stranding mechanism (3) pulls the wires collected into one wire to move away from the collecting pipe (4).

2. A terminal inner wire stranding machine according to claim 1, characterized in that: The wire feeding control device (6) comprises: A light barrier photoelectric sensor is arranged on the collecting pipe (4) and is used for detecting the running state of the wires in the collecting pipe (4) in real time, and sends a signal to a microprocessor A when the stranding mechanism (3) pulls the wires collected into one wire to move away from the collecting pipe (4) or stops moving in this direction; The microprocessor A sends a signal to an actuator A to close or open the electromagnet (502) according to the light barrier photoelectric sensor; The actuator A opens or closes the electromagnet (502) according to the signal of the microprocessor A.

3. A terminal inner wire stranding machine according to claim 1, characterized in that: The wire feeding mechanism (2) comprises a connecting plate (201) fixed to the top of the machine table (1), a motor A (202) is arranged at the top of the connecting plate (201), a mounting frame (203) detachably connected to a wire reel (208) is arranged at the transmission part of the motor A (202), a positioning roller (204) and a tensioning roller (205) are further arranged at the top of the machine table (1), the bottom of the positioning roller (204) is rotatably connected to a support rod (206) through a bearing, the bottom of the support rod (206) is fixed to the top of the connecting plate (201), and a displacement assembly (207) is arranged at the bottom of the tensioning roller (205).

4. A terminal inner wire stranding machine according to claim 3, characterized in that: The shifting assembly (207) comprises a bottom plate (2071) connected with the top end of the connecting plate (201) through a support plate (2079), the front and back sides of the bottom plate (2071) are connected with a frame-shaped plate (2073) through side plates (2072), the inside of the frame-shaped plate (2073) is provided with a lead screw (2075) driven by a motor B (2074), the outer side wall of the lead screw (2075) is threadedly connected with a rod sleeve (2076), the bottom of the tensioning roller (205) is rotationally connected with the top end of the rod sleeve (2076) through a bearing, and the top end of the bottom plate (2071) is fixedly connected with a guide rail B (2077), and the bottom end of the rod sleeve (2076) is slidingly connected in the guide rail B (2077) through a sliding block B (2078).

5. A terminal inner wire stranding machine according to claim 4, characterized in that: The shifting assembly (207) is provided with a tension control device (7), which automatically adjusts the position of the tensioning roller (205) according to the actual tension required by the tensioning roller (205), so as to maintain the stable pay-off of the pay-off mechanism (2).

6. A terminal inner wire stranding machine according to claim 5, characterized in that: The tension control device (7) comprises: a tension sensor arranged on the tensioning roller (205) and used for detecting the wire tension passing through the tensioning roller (205) in real time and sending a signal to a microprocessor B; the microprocessor B sends a signal for driving the motor B (2074) to run to an actuator B according to the signal of the tension sensor, wherein the signal includes the running time, rotating speed and rotating direction of the motor B (2074); the actuator B drives the motor B (2074) to run according to the signal of the microprocessor B.

7. A terminal inner wire stranding machine according to claim 6, characterized in that: Both sides of the inside of the frame-shaped plate (2073) are provided with spring switches (8) for driving the running of a buzzer (9), and the buzzer (9) is arranged on the surface of the frame-shaped plate (2073).

8. A terminal inner wire stranding machine according to claim 3, characterized in that: The mounting frame (203) comprises a rotating disc (2031) fixed on the transmission shaft of the motor A (202), and the top end of the rotating disc (2031) is fixedly connected with a positioning rod (2032) for inserting a center rod (2081) of a wire reel (208), the head of the positioning rod (2032) is fixedly connected with a screw rod (2033), the top of the center rod (2081) is provided with a through hole (2082) for the screw rod (2033) to pass through, and the outer side wall of the screw rod (2033) is threadedly connected with a nut.

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