Automatic welding device for sewing machine rack

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to an automatic welding device for a sewing machine rack, the automatic welding device comprises a welding table, first electric sliding rails are fixedly mounted on the two sides of the welding table, the two first electric sliding rails are jointly connected with a supporting frame in a sliding mode, and a second electric sliding rail is fixedly arranged on the supporting frame; and a sliding seat is slidably connected to the second electric sliding rail, an electric cylinder is fixedly arranged on the sliding seat, a welding head is fixedly connected to the output end of the electric cylinder, and a PLC is fixedly arranged on one side of the welding table. According to the automatic welding device, the sewing machine rack to be welded can be automatically welded, the complexity of manual welding is avoided, smoke dust generated in the welding process can be washed with water, meanwhile, clean water for washing can be monitored, a worker can be reminded, the worker can replace the washing liquid in time, and the welding efficiency is improved. And the reduction of the smoke treatment effect caused by poor water quality is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to an automatic welding device for a sewing machine frame. Background Art

[0002] As a key component of a sewing machine, the sewing machine frame has the main function of supporting and stabilizing the entire structure of the sewing machine. Carbon steel has been widely used in the manufacturing of sewing machine frames due to its certain degree of hardness and strength, as well as its relatively low cost. In the production process of carbon steel sewing machine frames, welding operations are often required to ensure the stability of the connections between the various connecting parts.

[0003] Under current circumstances, when welding the sewing machine frame, manual welding is usually used to weld the various joint parts of the frame. This welding method has the problem of low efficiency and high labor consumption. In addition, a certain amount of smoke and dust will be generated during the welding process, and these smoke and dust are often difficult to be effectively disposed of and can only be discharged into the surrounding air at will, which not only pollutes the environment, but also easily brings health risks to the workers after being inhaled by the human body.

[0004] Therefore, we propose an automatic welding device for a sewing machine frame to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an automatic welding device for a sewing machine frame in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic welding device for a sewing machine frame, comprising a welding table, first electric slide rails are fixedly installed on both sides of the welding table, and the two first electric slide rails are slidably connected to a support frame, a second electric slide rail is fixedly arranged on the support frame, and a slide seat is slidably connected to the second electric slide rail, an electric cylinder is fixedly arranged on the slide seat, and a welding head is fixedly connected to the output end of the electric cylinder, a PLC controller is fixedly arranged on one side of the welding table, and the PLC controller is electrically connected to the first electric slide rail, the second electric slide rail, the electric cylinder and the welding head, and the PLC controller is used to control the welding path of the welding head; An air guide chamber and a water washing chamber are provided on the welding table. A plurality of air inlet holes connected with the air guide chamber are provided on the welding table. Clean water is injected into the water washing chamber. A dust removal pump is installed on the welding table. The input end of the dust removal pump is connected with the air guide chamber, and the output end of the dust removal pump extends to the clean water. A water level monitoring mechanism is installed in the water washing chamber, and a trigger reminder mechanism matched with the water level monitoring mechanism is fixedly provided on one side of the welding table. A plurality of stirring shafts are rotatably provided in the water washing chamber, and stirring blades are fixedly provided on the stirring shafts. A control mechanism matched with each stirring shaft is provided on the welding table.

[0007] In the above-mentioned automatic welding device for a sewing machine frame, the water level monitoring mechanism is composed of an ultraviolet spotlight and a photoresistor, the ultraviolet spotlight is fixedly arranged on the inner top wall of the water washing chamber, and the photoresistor is fixedly arranged on the inner bottom surface of the water washing chamber, and the photoresistor is arranged opposite to the ultraviolet spotlight.

[0008] In the above-mentioned automatic welding device for a sewing machine frame, a protective cover is provided on the outer wall cover of the photoresistor, and the protective cover is fixedly arranged in the water washing chamber, and the protective cover is made of a transparent material.

[0009] In the above-mentioned automatic welding device for a sewing machine frame, the trigger reminder mechanism includes a trigger box, an electromagnetic block, a permanent magnet block, a trigger switch and a prompt light. The trigger box and the prompt light are both fixedly arranged on a side wall of the welding table. The electromagnetic block is fixedly arranged in the trigger box, and the electromagnetic block is fixedly connected to the permanent magnet block through a reset spring. The permanent magnet block is slidably connected to the trigger box. The trigger switch is fixedly arranged on the inner bottom surface of the trigger box, and the trigger switch and the permanent magnet block are arranged opposite to each other. A pressure block for pressing the trigger switch is fixedly arranged on the permanent magnet block. The electromagnetic block is electrically connected to the photoresistor, and the trigger switch is electrically connected to the prompt light.

[0010] In the above-mentioned automatic welding device for a sewing machine frame, the control mechanism includes a rotating shaft, a servo motor and a plurality of bevel gear groups. A control cavity is provided on the welding table. The rotating shaft is rotatably arranged in the control cavity, and one end of the rotating shaft is transmission-connected to the servo motor. The lower end of each stirring shaft extends into the control cavity and is transmission-connected to the rotating shaft through a bevel gear group.

[0011] In the above-mentioned automatic welding device for a sewing machine frame, the upper side of the water washing chamber is fixedly connected to a pressure relief pipe, and a pressure relief valve is provided on the pressure relief pipe, and the lower side of the water washing chamber is fixedly connected to an inlet and outlet pipe, and an electromagnetic valve is provided on the inlet and outlet pipe.

[0012] In the above-mentioned automatic welding device for a sewing machine frame, the port of the pressure relief pipe is threadedly connected to a filter seat, and a filter layer is embedded on the filter seat.

[0013] In the above-mentioned automatic welding device for a sewing machine frame, an electromagnetic plate is embedded on the upper end surface of the welding table.

[0014] Compared with the prior art, the advantages of an automatic welding device for a sewing machine frame are: The first electric slide rail, the second electric slide rail and the electric cylinder work together under the control of the PLC controller, which can accurately control the movement of the welding head in the front and back, left and right, up and down directions, ensuring that the welding head can perform automatic and precise welding operations according to the preset complex path, greatly improving the accuracy and quality of welding. Compared with manual welding, it avoids problems such as welding inconsistency caused by human factors. At the same time, automated welding greatly reduces dependence on manpower, reduces labor costs and labor intensity.

[0015] The dust removal pump cooperates with the air guide cavity to comprehensively collect the smoke generated during the welding process through multiple air inlet holes to prevent the smoke from escaping into the surrounding environment. The clean water in the water washing chamber can effectively absorb the dust particles in the smoke. The gas after water washing is relatively clean and its discharge into the environment can significantly reduce air pollution and protect the ecological environment. For the workers, it greatly reduces the risk of inhaling harmful smoke, ensures their health, and reduces the incidence of occupational diseases.

[0016] The ultraviolet spotlight and photoresistor in the water level monitoring mechanism can accurately and in real time monitor the changes in the turbidity of the clean water. When the washing usage of the clean water reaches saturation, that is, the turbidity reaches the maximum value, the reminder mechanism can be triggered in time to work, and the coordination of the electromagnetic block, permanent magnet block and trigger switch and other components in the trigger reminder mechanism makes the prompt light automatically light up, sending a clear signal to the staff to remind them to replace the clean water in time. This mechanism ensures that the welding fume treatment process always maintains a good effect and avoids the decline in treatment efficiency due to deterioration of water quality.

[0017] Driven by the control mechanism, multiple stirring shafts and stirring blades rotate synchronously to fully stir the clean water in the water washing chamber. This stirring action can better disperse and dissolve the dust entering the water, accelerate the combination of dust and water, and improve the efficiency and effect of smoke treatment. At the same time, the synchronous operation of multiple stirring shafts can be achieved through a servo motor and transmission mechanism, reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective structural schematic diagram of an automatic welding device for a sewing machine frame provided by the present invention; Figure 2 It is a front perspective structural diagram of a control chamber and a water washing chamber of an automatic welding device for a sewing machine frame provided by the present invention cooperating with each other; Figure 3It is a schematic diagram of the internal structure of a trigger box of an automatic welding device for a sewing machine frame provided by the present invention; Figure 4 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0019] In the figure: 1 welding table, 2 first electric slide rail, 3 support frame, 4 second electric slide rail, 5 slide seat, 6 electric cylinder, 7 welding head, 8 PLC controller, 9 air guide cavity, 10 water washing cavity, 11 air inlet, 12 clean water, 13 dust removal pump, 14 water level monitoring mechanism, 141 ultraviolet spotlight, 142 photoresistor, 15 trigger reminder mechanism, 151 trigger box, 152 electromagnetic block, 153 permanent magnet block, 154 trigger switch, 155 prompt light, 16 stirring shaft, 17 stirring blade, 18 control mechanism, 181 rotating shaft, 182 servo motor, 183 bevel gear set, 19 protective cover, 20 reset spring, 21 pressure block, 22 control cavity, 23 pressure relief pipe, 24 pressure relief valve, 25 inlet and outlet pipes, 26 electromagnetic valve, 27 filter seat, 28 electromagnetic plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] like Figure 1-Figure 4 As shown, an automatic welding device for a sewing machine frame includes a welding table 1, an electromagnetic plate 28 is embedded on the upper end surface of the welding table 1, the electromagnetic plate 28 is arranged to facilitate the suction and fixation of the carbon steel sewing machine frame to be welded, first electric slide rails 2 are fixedly installed on both sides of the welding table 1, and the two first electric slide rails 2 are slidably connected to a support frame 3, a second electric slide rail 4 is fixedly arranged on the support frame 3, and a slide seat 5 is slidably connected to the second electric slide rail 4, an electric cylinder 6 is fixedly arranged on the slide seat 5, and a welding head 7 is fixedly connected to the output end of the electric cylinder 6, a PLC controller 8 is fixedly arranged on one side of the welding table 1, and the PLC controller 8 is electrically connected to the first electric slide rail 2, the second electric slide rail 4, the electric cylinder 6 and the welding head 7, and the PLC controller 8 is used to control the welding path of the welding head 7.

[0022] An air guide chamber 9 and a water washing chamber 10 are provided on the welding table 1. A plurality of air inlet holes 11 connected to the air guide chamber 9 are provided on the welding table 1. Clean water 12 is injected into the water washing chamber 10. A dust removal pump 13 is installed on the welding table 1. The input end of the dust removal pump 13 is connected to the air guide chamber 9, and the output end of the dust removal pump 13 extends to the clean water 12. A water level monitoring mechanism 14 is installed in the water washing chamber 10, and a trigger reminder mechanism 15 cooperating with the water level monitoring mechanism 14 is fixedly provided on one side of the welding table 1.

[0023] The water level monitoring mechanism 14 is composed of an ultraviolet spotlight 141 and a photoresistor 142. The ultraviolet spotlight 141 is fixedly arranged on the inner top wall of the water washing chamber 10, and the photoresistor 142 is fixedly arranged on the inner bottom surface of the water washing chamber 10. The photoresistor 142 is arranged opposite to the ultraviolet spotlight 141. The ultraviolet spotlight 141 can sterilize the clean water 12, and at the same time can cooperate with the photoresistor 142 to monitor the turbidity of the clean water 12 and feedback the corresponding electrical signal.

[0024] The outer wall of the photoresistor 142 is provided with a protective cover 19, and the protective cover 19 is fixedly set in the water washing chamber 10. The protective cover 19 is made of transparent material. The setting of the protective cover 19 can protect the photoresistor 142, and the protective cover 19 is light-transmissive and will not affect the photoresistor 142's perception of light intensity.

[0025] The trigger reminder mechanism 15 includes a trigger box 151, an electromagnetic block 152, a permanent magnet block 153, a trigger switch 154 and a prompt light 155. The trigger box 151 and the prompt light 155 are fixedly arranged on a side wall of the welding table 1. The electromagnetic block 152 is fixedly arranged in the trigger box 151, and the electromagnetic block 152 is fixedly connected to the permanent magnet block 153 through a reset spring 20. The permanent magnet block 153 is slidably connected to the trigger box 151. The trigger switch 154 is fixedly arranged on the inner bottom surface of the trigger box 151, and the trigger switch 154 is connected to the trigger box 151. The permanent magnet blocks 153 are arranged relatively to each other, and a pressure block 21 for pressing the trigger switch 154 is fixedly arranged on the permanent magnet block 153. The electromagnetic block 152 is electrically connected to the photoresistor 142, and the trigger switch 154 is electrically connected to the prompt light 155. Through the set electromagnetic block 152, the corresponding magnetic change can be generated based on the electrical signal fed back by the water level monitoring mechanism 14, and then in conjunction with the permanent magnet block 153, the automatic opening and closing of the trigger switch 154 can be controlled, so that the prompt light 155 can automatically light up and turn off to remind the staff.

[0026] A plurality of stirring shafts 16 are rotatably arranged in the washing chamber 10, and stirring blades 17 are fixedly arranged on the stirring shafts 16. A control mechanism 18 matched with each stirring shaft 16 is arranged on the welding table 1, and the control mechanism 18 includes a rotating shaft 181, a servo motor 182 and a plurality of bevel gear sets 183. A control chamber 22 is opened on the welding table 1, and the rotating shaft 181 is rotatably arranged in the control chamber 22, and one end of the rotating shaft 181 is transmission-connected to the servo motor 182. The lower end of each stirring shaft 16 extends into the control chamber 22 and is transmission-connected to the rotating shaft 181 through the bevel gear set 183. Through the transmission cooperation of the rotating shaft 181 and the plurality of bevel gear sets 183, the servo motor 182 can synchronously control the synchronous rotation of each stirring shaft 16, thereby avoiding the cost of additional driving equipment.

[0027] The upper side of the water washing chamber 10 is fixedly connected to a pressure relief pipe 23, and a pressure relief valve 24 is provided on the pressure relief pipe 23. The lower side of the water washing chamber 10 is fixedly connected to a liquid inlet and outlet pipe 25, and a solenoid valve 26 is provided on the liquid inlet and outlet pipe 25. The cooperation of the pressure relief pipe 23 and the pressure relief valve 24 can automatically relieve pressure and exhaust when the pressure in the water washing chamber 10 is too high. The setting of the liquid inlet and outlet pipe 25 and the solenoid valve 26 is convenient for liquid inlet and outlet. The port of the pressure relief pipe 23 is threadedly connected to a filter seat 27, and a filter layer is embedded on the filter seat 27. The filter layer on the filter seat 27 can further filter the gas discharged from the pressure relief pipe 23.

[0028] The operating principle of the present invention is now described as follows: When the device is in use, the upper surface of the welding table 1 is pre-defined with a welding positioning and placement area. During welding, the frame to be welded is placed flat on the defined area of ​​the welding table 1, and then the electromagnetic plate 28 is energized to generate magnetism to attract the frame to ensure the stability of the frame placement. Then, the first electric slide rail 2, the second electric slide rail 4, the electric cylinder 6 and the welding head 7 are controlled by the PLC controller 8 to work according to a preset program, so that the welding head 7 can automatically move in the front, back, left, right, up and down positions according to the preset program, so that the welding head 7 automatically welds the frame according to the preset path; During the welding process, the dust removal pump 13 and the servo motor 182 are started. The dust removal pump 13 will suck the air in the air guide chamber 9, so that the air guide chamber 9 generates negative pressure, and then the air guide chamber 9 will suck the smoke generated during the welding process through the air inlet 11. After the smoke enters the air guide chamber 9, it will be transported to the clean water 12 by the dust removal pump 13 for washing to remove the dust in the smoke. At the same time, the servo motor 182 will control the rotation of the shaft 181. Under the transmission cooperation of each bevel gear set 183, each stirring blade 17 will rotate synchronously to stir the clean water 12, so that the dust in the smoke can be better dissolved in the clean water 12 and filtered out. After the air pressure in the washing chamber 10 reaches a certain level, the pressure relief valve 24 will automatically open, so that the pressure relief pipe 23 is exhausted and depressurized, and the filter seat 27 on the pressure relief pipe 23 can further filter the exhausted gas, thereby ensuring the cleanliness of the exhausted gas. When the washing usage of the clean water 12 reaches saturation, the turbidity of the clean water 12 will reach a maximum, and the light intensity of the ultraviolet spotlight 141 irradiating the photoresistor 142 will be weakest. At this time, the resistance of the photoresistor 142 will reach a maximum, and the current passed through the electromagnetic block 152 will become smaller, making the magnetism of the electromagnetic block 152 weaker. At this time, the reset spring 20 will release energy, so that the permanent magnet block 153 drives the pressure block 21 to move down to trigger the switch 154, so that the contacts of the trigger switch 154 are closed, and then the prompt light 155 lights up to remind the staff. The staff can connect the drainage pipe 25 through the drainage pump to transport the waste liquid to the designated location for treatment. After the discharge is completed, the drainage pipe 25 is connected to the infusion pump to re-inject clean water 12.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic welding device for a sewing machine frame, comprising a welding table (1), characterized in that: A first electric slide rail (2) is fixedly mounted on both sides of the welding table (1), and the two first electric slide rails (2) are slidably connected to a support frame (3); a second electric slide rail (4) is fixedly mounted on the support frame (3), and a slide seat (5) is slidably connected to the second electric slide rail (4); an electric cylinder (6) is fixedly mounted on the slide seat (5), and a welding head (7) is fixedly connected to the output end of the electric cylinder (6); a PLC controller (8) is fixedly mounted on one side of the welding table (1), and the PLC controller (8) is electrically connected to the first electric slide rail (2), the second electric slide rail (4), the electric cylinder (6) and the welding head (7); and the PLC controller (8) is used to control the welding path of the welding head (7); The welding table (1) is provided with an air guide cavity (9) and a water washing cavity (10), the welding table (1) is provided with a plurality of air inlet holes (11) connected to the air guide cavity (9), clean water (12) is injected into the water washing cavity (10), a dust removal pump (13) is installed on the welding table (1), the input end of the dust removal pump (13) is connected to the air guide cavity (9), and the output end of the dust removal pump (13) extends to the clean water (12), a water level monitoring mechanism (14) is installed in the water washing cavity (10), and a trigger reminder mechanism (15) matched with the water level monitoring mechanism (14) is fixedly arranged on one side of the welding table (1), a plurality of stirring shafts (16) are rotatably arranged in the water washing cavity (10), and stirring blades (17) are fixedly arranged on the stirring shafts (16), and a control mechanism (18) matched with each stirring shaft (16) is arranged on the welding table (1); The water level monitoring mechanism (14) is composed of an ultraviolet lamp (141) and a photoresistor (142); the ultraviolet lamp (141) is fixedly arranged on the inner top wall of the water washing chamber (10), and the photoresistor (142) is fixedly arranged on the inner bottom surface of the water washing chamber (10); the photoresistor (142) and the ultraviolet lamp (141) are arranged opposite to each other; The ultraviolet light (141) can sterilize the clean water (12), and can cooperate with the photoresistor (142) to monitor the turbidity of the clean water (12) and feed back a corresponding electrical signal.

2. The automatic welding device for a sewing machine frame according to claim 1, characterized in that: The outer wall cover of the photoresistor (142) is provided with a protective cover (19), and the protective cover (19) is fixedly arranged in the water washing chamber (10), and the protective cover (19) is made of a transparent material.

3. The automatic welding device for a sewing machine frame according to claim 1, characterized in that: The trigger reminder mechanism (15) comprises a trigger box (151), an electromagnetic block (152), a permanent magnet block (153), a trigger switch (154) and a reminder light (155); the trigger box (151) and the reminder light (155) are both fixedly arranged on a side wall of the welding table (1); the electromagnetic block (152) is fixedly arranged in the trigger box (151); the electromagnetic block (152) is fixedly connected to the permanent magnet block (153) via a return spring (20); The block (153) is slidably connected to the trigger box (151), the trigger switch (154) is fixedly arranged on the inner bottom surface of the trigger box (151), and the trigger switch (154) and the permanent magnet block (153) are arranged opposite to each other, a pressing block (21) for pressing the trigger switch (154) is fixedly arranged on the permanent magnet block (153), the electromagnetic block (152) is electrically connected to the photoresistor (142), and the trigger switch (154) is electrically connected to the prompt light (155).

4. The automatic welding device for a sewing machine frame according to claim 1, characterized in that: The control mechanism (18) comprises a rotating shaft (181), a servo motor (182) and a plurality of bevel gear sets (183); a control chamber (22) is provided on the welding table (1); the rotating shaft (181) is rotatably disposed in the control chamber (22); one end of the rotating shaft (181) is transmission-connected to the servo motor (182); and the lower end of each stirring shaft (16) extends into the control chamber (22) and is transmission-connected to the rotating shaft (181) via the bevel gear set (183).

5. The automatic welding device for a sewing machine frame according to claim 1, characterized in that: The upper side of the water washing chamber (10) is fixedly connected to a pressure relief pipe (23), and a pressure relief valve (24) is provided on the pressure relief pipe (23); the lower side of the water washing chamber (10) is fixedly connected to a liquid inlet and outlet pipe (25), and a solenoid valve (26) is provided on the liquid inlet and outlet pipe (25).

6. The automatic welding device for a sewing machine frame according to claim 5, characterized in that: The port of the pressure relief pipe (23) is threadedly connected to a filter seat (27), and a filter layer is embedded on the filter seat (27).

7. The automatic welding device for a sewing machine frame according to claim 1, characterized in that: An electromagnetic plate (28) is embedded on the upper end surface of the welding platform (1).

Images