Special automatic paying-off tool for electromagnetic valve

Abstract

The automatic paying-off tool special for the electromagnetic valve comprises a metal frame, a plurality of pulleys, a bobbin, a tension early warning block, a tension early warning induction block, a motor, a first photoelectric sensor and a second photoelectric sensor. The metal frame is fixed on the horizontal platform; the bobbin is horizontally placed on the metal frame; the bobbin is connected with an output shaft of the motor, and the motor can drive the bobbin to rotate; after being led out, an enameled wire wound on the bobbin passes through the pulleys in sequence and then is wound on the valve body framework; the first photoelectric sensor and the second photoelectric sensor are both mounted on the metal frame, and the mounting height of the first photoelectric sensor is higher than that of the second photoelectric sensor; the tension early warning block is fixedly connected with one pulley, and the tension early warning induction block is fixedly connected with the other pulley; according to the arrangement sequence of the pulleys, the pulleys fixedly connected with the tension early warning block and the pulleys fixedly connected with the tension early warning induction block are arranged in the middle.

Description

Technical Field

[0001] The utility model relates to an assembly technology in manufacturing technology, and particularly relates to a special automatic wire laying tooling for solenoid valves. Background Art

[0002] In a solenoid valve product, there is a component for winding an electromagnetic coil - a valve body coil assembly, which is assembled after winding an enameled wire with a specific specification around a valve body skeleton. In the previous production process, for the wire winding process as Figure 1 shown, the valve body skeleton 2 (see Figure 2 ) is horizontally placed on a manual wire winding machine 16, the wire reel 14 is vertically placed on the ground, and an operator manually pays off the wire from the wire reel 14 and winds it around the valve body skeleton 2 through the manual wire winding machine 16, that is, in the wire winding process, the operator needs to drag and wind the enameled wire 17 perpendicular to the ground around the horizontally fixed valve body skeleton. This wire winding method is prone to generating torsional stress due to the change of the front and rear states of the enameled wire, and even phenomena such as knotting and breaking may occur. Moreover, manually dragging the enameled wire for wire laying easily causes slight radial deformation of the enameled wire, affecting the service life of the enameled wire.

[0003] Chinese Patent CN102815579A discloses an enameled wire wire laying tooling, which designs a damping cover for the enameled wire on a vertically placed wire reel to avoid phenomena such as random scattering, tangled wire, twisted wire, and dead knots during wire laying.

[0004] Chinese Patent CN107768028A discloses an automatic enameled wire wire laying device, which uses the cooperation of a dual-axis motor and a speed regulator to replace manual wire laying. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a special automatic wire laying tooling for solenoid valves, which improves manual wire laying to automatic wire laying, avoids stress mutation during the wire laying process of the enameled wire, reduces deformation, and improves the assembly efficiency at the same time.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a special automatic wire-releasing tool for a solenoid valve, comprising a metal frame, a plurality of pulleys, a bobbin, a tension warning block, a tension warning sensing block, a motor, a first photoelectric sensor and a second photoelectric sensor; the metal frame is fixed on a horizontal platform; the bobbin is placed horizontally on the metal frame; the bobbin is connected to the output shaft of the motor, and the motor can drive the bobbin to rotate; after the enameled wire wound on the bobbin is led out, it passes through each pulley in turn and then is wound around the valve body frame; the first photoelectric sensor and the second photoelectric sensor are both installed on the metal frame, and the installation height of the first photoelectric sensor is higher than the installation height of the second photoelectric sensor; the tension warning block is fixedly connected to a pulley, and the tension warning sensing block is fixedly connected to another pulley; according to the arrangement order of the pulleys, the pulley fixedly connected to the tension warning block and the pulley fixedly connected to the tension warning sensing block are both pulleys arranged in the middle position.

[0007] The above-mentioned automatic wire-releasing tooling for solenoid valves, wherein, when the enameled wire begins to wrap around the valve body frame, the tension warning sensing block is pulled up, and the height of the tension warning sensing block successively exceeds the height of the second photoelectric sensor and the first photoelectric sensor until it reaches the top; after reaching the top, the tension warning block will be pulled up; when the tension warning sensing block meets the first photoelectric sensor, the first photoelectric sensor is triggered to generate electrical information, and the electrical information activates the motor to drive the bobbin to rotate clockwise or counterclockwise, starting wire-releasing or wire-winding; during the wire-releasing or wire-winding process, the tension warning block is controlled to be suspended in the air at all times.

[0008] The above-mentioned automatic wire-releasing tooling for solenoid valves, wherein the automatic wire-releasing tooling for solenoid valves comprises seven pulleys. After the enameled wire on the bobbin is led out, it passes through the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, and the seventh pulley in turn, and then is wound around the valve body frame; the tension warning block is fixedly connected to the second pulley; the tension warning sensor block is fixedly connected to the fourth pulley; the first pulley, the third pulley and the fifth pulley are each installed on the upper end of the metal frame through a conductor rod; the sixth pulley is installed on the lower end of the metal frame through a conductor rod; the seventh pulley is installed on a horizontal platform; the bobbin is located at the lower end of the metal frame.

[0009] The above-mentioned automatic wire-releasing tooling for electromagnetic valves further comprises horizontal clamping blocks; one horizontal clamping block is respectively arranged at both ends of the wire reel, and the wire reel is positioned in the horizontal direction by the two horizontal clamping blocks.

[0010] The above-mentioned automatic wire-releasing tooling specially used for the solenoid valve, wherein, when the manual winding speed is lower than the automatic wire-releasing speed, the height of the tension warning sensing block will decrease, and when the height of the tension warning sensing block drops to the height of the second photoelectric sensor, the second photoelectric sensor will be triggered to generate electrical information, the motor will stop working, and the bobbin will stop rotating.

[0011] Compared with the prior art, the beneficial technical effects of the utility model are:

[0012] The utility model is a special automatic wire-releasing tool for electromagnetic valves, which realizes the functions of wire-releasing and wire-reeling by the forward and reverse rotation of the motor, sends out commands to start and stop working through the cooperation of the photoelectric sensor and the relay, and sets a plurality of pulleys to ensure the stress consistency on the enameled wire. After the winding process of the valve body coil assembly is carried out by using the special automatic wire-releasing tool for electromagnetic valves, it is found that the coil resistance of the finished assembly of 20Ω can be processed into (20.46-20.73)Ω, and the coil resistance of 23Ω can be processed into (23.31-23.73)Ω, and the enameled wire on the coil is arranged evenly, neatly and tightly. The tool has the characteristics of convenient operation, high efficiency and strong processing consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The automatic wire-laying tool for electromagnetic valves of the utility model is provided by the following embodiments and drawings.

[0014] Figure 1 It is a schematic diagram of the winding process of the valve body coil assembly in the prior art.

[0015] Figure 2 Schematic diagram of the valve body skeleton.

[0016] Figure 3 This is a schematic diagram of the use of a special automatic wire-releasing tool for solenoid valves in conjunction with a manual winding machine according to an embodiment of the utility model.

[0017] Figure 4 This is a schematic diagram of an automatic wire-laying tooling for a solenoid valve according to an embodiment of the utility model.

[0018] Figure 5 This is a schematic diagram of the control circuit principle of the automatic wire-laying tooling for solenoid valves according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined Figures 3 to 5 The automatic wire-releasing tooling specially used for the solenoid valve of the utility model is further described in detail.

[0020] Figure 3 The figure shows a schematic diagram of the use of the automatic wire-releasing tooling for solenoid valves in cooperation with the manual wire-winding machine according to the embodiment of the utility model; Figure 4 Shown is a schematic diagram of an automatic wire-laying tooling device specifically designed for a solenoid valve according to an embodiment of the utility model.

[0021] See Figure 3 and Figure 4 For this solenoid valve dedicated automatic wire unwinding tooling of this embodiment, it includes a metal frame 6, several pulleys, several wire rods 11, a bobbin 14, a tension warning block, a tension warning induction block, a horizontal clamp block 15, a motor 12, a first photoelectric sensor 7 and a second photoelectric sensor 5;

[0022] The metal frame 6 is fixed on a horizontal platform;

[0023] The bobbin 14 is horizontally placed on the metal frame 6; the bobbin 14 is connected to the output shaft of the motor 12, and the motor 12 can drive the bobbin 14 to rotate; to prevent the bobbin 14 from moving in the horizontal direction, a horizontal clamp block 15 is provided at each end of the bobbin 14, and the two horizontal clamp blocks 15 position the bobbin 14 in the horizontal direction;

[0024] After the enameled wire wound on the bobbin 14 is led out, it passes through each pulley in sequence and then winds around the valve body skeleton 2;

[0025] The first photoelectric sensor 7 and the second photoelectric sensor 5 are both installed on the metal frame 6, and the installation height of the first photoelectric sensor 7 is higher than that of the second photoelectric sensor 5; the connection line between the first photoelectric sensor 7 and the second photoelectric sensor 5 is in the vertical direction;

[0026] The tension warning block is fixedly connected to a pulley, and the tension warning induction block is fixedly connected to another pulley; according to the arrangement order of each pulley, the pulley fixedly connected to the tension warning block and the pulley fixedly connected to the tension warning induction block are both pulleys arranged in the middle position, that is, pulleys not at the two ends;

[0027] Some pulleys are installed on the metal frame 6 through the wire rods 11.

[0028] Such as Figure 4 In this embodiment, there are seven pulleys. After the enameled wire on the bobbin 14 is led out, it passes through the first pulley 10, the second pulley, the third pulley 9, the fourth pulley, the fifth pulley 8, the sixth pulley 3, the seventh pulley 1 in sequence and then winds around the valve body skeleton 2; the tension warning block is fixedly connected to the second pulley, see Figure 4 Icon 13 in Figure 4The middle pulley 4; the first pulley 10, the third pulley 9, and the fifth pulley 8 are each installed at the upper end of the metal frame 6 through a wire rod 11, that is, the first pulley 10, the third pulley 9, and the fifth pulley 8 are each suspended and fixed on the metal frame 6 through a wire rod 11; the sixth pulley 3 is installed at the lower end of the metal frame 6 through a wire rod 11; the seventh pulley 1 is installed on a horizontal platform. The bobbin 14 is horizontally placed at the lower end of the metal frame 6.

[0029] To achieve automatic wire feeding and automatic wire rewinding, the solenoid valve special automatic wire feeding tooling of this embodiment also needs to design a control circuit. The control circuit includes a middle relay KM1, a middle relay KM2, a self-locking relay KM3, a 24V regulated DC power supply, a speed control switch, a changeover switch, an emergency stop switch, and an integrated circuit control module. Its circuit principle is as Figure 5 shown.

[0030] Combined with Figures 3 to 5 , the working principle of the solenoid valve special automatic wire feeding tooling of this embodiment is as follows:

[0031] Wire feeding: After the enameled wire on the bobbin 14 is led out, it passes through the first pulley 10, the second pulley, the third pulley 9, the fourth pulley, the fifth pulley 8, the sixth pulley 3, and the seventh pulley 1 in sequence, and then winds around the valve body skeleton 2; the solenoid valve special automatic wire feeding tooling is powered on, and the changeover switch is controlled to be in the "forward" rotation state; manually rotate the manual winding machine clockwise; during the winding process of the manual winding machine, as the enameled wire is wound around the valve body skeleton 2, the tension warning induction block and the fourth pulley 4 are also pulled up by the enameled wire, and the height of the tension warning induction block successively exceeds the heights of the second photoelectric sensor 5 and the first photoelectric sensor 7 (that is, the tension warning induction block successively meets the second photoelectric sensor 5 and the first photoelectric sensor 7) until it reaches the apex; after reaching the apex, the tension warning block and the second pulley 13 will be pulled up; when the tension warning induction block meets the first photoelectric sensor 7, the first photoelectric sensor 7 is triggered to generate an electrical signal, and three relays (i.e., the middle relay KM1, the middle relay KM2, and the self-locking relay KM3) are closed, and the motor 12 is activated to start driving the bobbin 14 to rotate clockwise, starting automatic wire feeding; during the winding process, the manual winding machine needs to be continuously rotated. When the manual winding speed is less than the automatic wire feeding speed, the height of the tension warning induction block will decrease. When the height of the tension warning induction block drops to the height of the second photoelectric sensor 5, the second photoelectric sensor 5 is triggered to generate an electrical signal, the self-locking relay KM3 is disconnected, the middle relay KM2 is disconnected, the motor 12 stops working, the bobbin 14 stops rotating, and the automatic wire feeding stops;

[0032] During the wire pay-off process, the automatic wire pay-off speed can be adjusted by controlling the speed regulation switch to match the manual winding speed, and the tension warning block is controlled to float in the air at all times, thus ensuring consistent stress on the enameled wire.

[0033] Wire take-up: Control the change-over switch to be in the "reverse" rotation state (i.e., control the solenoid valve dedicated automatic wire pay-off tooling to be in the wire take-up mode through the change-over switch); first rotate the manual winding machine clockwise so that the enameled wire pulls up the tension warning induction block and exceeds the height of the first photoelectric sensor 7, then the three relays close, and the motor 12 is activated to start driving the bobbin 14 to rotate counterclockwise, and then rotate the manual winding machine counterclockwise to carry out wire take-up.

[0034] The utility model designs a set of automatic wire pay-off tooling with a horizontally placed bobbin, which is used in cooperation with a manual winding machine (a general device equipped at the fitter production site). The solenoid valve dedicated automatic wire pay-off tooling of the utility model realizes the functions of wire pay-off and wire take-up through the forward and reverse rotation of the motor, issues commands to start working and pause working through the cooperation of the photoelectric sensor and the relay, and sets multiple pulleys to ensure the consistency of the stress on the enameled wire.

[0035] Compared with Chinese Patent CN102815579A, the solenoid valve dedicated automatic wire pay-off tooling of the utility model changes the bobbin to be horizontally placed, avoiding sudden stress changes on the enameled wire. Compared with Chinese Patent CN107768028A, the solenoid valve dedicated automatic wire pay-off tooling of the utility model adds the functions of wire take-up and start-and-stop at any time, and adjusts the stress on the enameled wire through the cooperation of multiple groups of pulleys, avoiding problems of deformation and damage generated during the winding process of the coil assembly.

Claims

1. Automatic wire-laying tooling for solenoid valve, characterized by: It includes a metal frame, a plurality of pulleys, a bobbin, a tension warning block, a tension warning sensing block, a motor, a first photoelectric sensor and a second photoelectric sensor; The metal frame is fixed on a horizontal platform; The bobbin is horizontally placed on the metal frame; the bobbin is connected to the output shaft of the motor, and the motor can drive the bobbin to rotate; After the enameled wire wound on the wire drum is led out, it passes through each pulley in turn and then winds around the valve body frame; The first photoelectric sensor and the second photoelectric sensor are both installed on the metal frame, and the installation height of the first photoelectric sensor is higher than the installation height of the second photoelectric sensor; The tension warning block is fixedly connected to a pulley, and the tension warning sensing block is fixedly connected to another pulley; according to the arrangement sequence of the pulleys, the pulley fixedly connected to the tension warning block and the pulley fixedly connected to the tension warning sensing block are both pulleys arranged in the middle position.

2. The automatic wire-laying tool for solenoid valves according to claim 1, characterized in that: When the enameled wire begins to wrap around the valve body frame, the tension warning sensing block is pulled up, and the height of the tension warning sensing block successively exceeds the height of the second photoelectric sensor and the first photoelectric sensor until it reaches the top; after reaching the top, the tension warning block will be pulled up; when the tension warning sensing block meets the first photoelectric sensor, the first photoelectric sensor is triggered to generate electrical information, and the electrical information activates the motor to drive the bobbin to rotate clockwise or counterclockwise, starting to pay out or reel in; during the process of paying out or reeling in, the tension warning block is controlled to be suspended in the air at all times.

3. The automatic wire-laying tool for solenoid valves according to claim 2, characterized in that: The automatic wire-releasing tooling for the solenoid valve comprises seven pulleys. After the enameled wire on the bobbin is led out, it passes through the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley and the seventh pulley in sequence, and then is wound around the valve body frame; the tension warning block is fixedly connected to the second pulley; the tension warning sensing block is fixedly connected to the fourth pulley; the first pulley, the third pulley and the fifth pulley are each installed on the upper end of the metal frame through a conductor rod; the sixth pulley is installed on the lower end of the metal frame through a conductor rod; the seventh pulley is installed on a horizontal platform; the bobbin is located at the lower end of the metal frame.

4. The automatic wire-laying tool for solenoid valves according to claim 2, characterized in that: The automatic wire-releasing tooling for electromagnetic valves also includes a horizontal clamping block; one horizontal clamping block is arranged at each end of the wire barrel, and the wire barrel is positioned in the horizontal direction by the two horizontal clamping blocks.

5. The automatic wire-laying tool for solenoid valves according to claim 2, characterized in that: When the manual winding speed is lower than the automatic unwinding speed, the height of the tension warning sensing block will decrease. When the height of the tension warning sensing block drops to the height of the second photoelectric sensor, the second photoelectric sensor is triggered to generate electrical information, the motor stops working, and the bobbin stops rotating.

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