A welding device and a welding method

Abstract

The present invention relates to a welding device and a welding method for automatically welding plastic shrapnel to a curtain fabric, belonging to the technical field of welding devices. The welding device includes: a curtain fabric placement table, a shrapnel placement groove, a feeding mechanism, a material pulling mechanism, a shrapnel cutting mechanism, a clamping mechanism, a welding mechanism, and a control unit. The device provided by the present invention for welding plastic shrapnel to a curtain fabric has a high degree of automation. Except for manual feeding, all other operations are automatically completed by the device, greatly reducing labor costs and improving efficiency; the requirements for operators are relatively low, only feeding is required, and general personnel can complete the operation, reducing the labor threshold and costs; the operation is simple and the control is precise, and all the mechanisms on the device can be controlled and coordinated through the control unit.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding device and a welding method for welding a plastic elastic piece to a curtain fabric. Background Art

[0002] Currently, the structure of the car sunroof winding curtain widely used in the market is that elastic pieces are fixed on both sides of the curtain fabric, and the curtain fabric is unfolded or retracted by sliding the elastic pieces fixed on both sides of the curtain fabric in corresponding elastic piece tracks (as shown in Figure 20 、 21 ). Currently, the elastic pieces are mainly fixed to the curtain fabric by bonding or sewing methods. However, the bonding or sewing methods are complex in operation, high in cost, and the elastic pieces fixed by bonding are prone to falling off after long-term use. Summary of the Invention

[0003] The present invention is completed in view of the above problems, and its purpose is to provide a welding device for automatically welding a plastic elastic piece to a curtain fabric, which has a high degree of automation, greatly reduces labor costs, and improves efficiency; the winding curtain produced by this device has a low cost and the welded elastic pieces are not easily detached.

[0004] The present invention provides a welding device, including: a curtain fabric placement table for placing the curtain fabric; an elastic piece placement groove located on the side of the curtain fabric placement table for placing the elastic pieces; a feeding mechanism located in front of the elastic piece placement groove for supplying the elastic pieces; a pulling mechanism including a pulling component for pulling the head end of the elastic piece to a preset position in the elastic piece placement groove; an elastic piece cutting mechanism located in front of the pulling component, including a cutter for cutting the elastic piece; a clamping mechanism located in front of the elastic piece placement groove for clamping the tail end of the elastic piece, and acting together with the pulling mechanism to keep the elastic piece placed in the elastic piece placement groove in a tensioned state; a welding mechanism located above the elastic piece placement groove for welding the elastic piece to the curtain fabric; and a control unit for controlling the actions of the pulling mechanism, the elastic piece cutting mechanism, the clamping mechanism, and the welding mechanism.

[0005] Further, the clamping mechanism includes a feeding mechanism for feeding the elastic piece downstream from the feeding mechanism; the feeding mechanism includes a feeding driving roller, a feeding pressing roller, and a feeding motor. The elastic piece is clamped between the feeding driving roller and the feeding pressing roller by the feeding pressing roller with a certain pressure. The feeding motor is in transmission connection with the feeding driving roller, and the feeding motor is in signal connection with the control unit.

[0006] Further, the clamping mechanism includes a first clamping roller and a second clamping roller; the elastic piece passes between the first clamping roller and the second clamping roller when being pulled by the pulling mechanism.

[0007] Further, there are two of each of the shrapnel placement grooves, the feeding mechanism, the pulling mechanism, the shrapnel cutting mechanism, the clamping mechanism and the welding mechanism, which are respectively located on both sides of the cord fabric placement table.

[0008] Further, the shrapnel placement grooves, the feeding mechanism, the pulling mechanism, the shrapnel cutting mechanism, the clamping mechanism and the welding mechanism are all installed on the width adjustment mechanism.

[0009] Further, the width adjustment mechanism includes a right movable mechanism and a left movable mechanism installed on the base frame. The right movable mechanism and the left movable mechanism are connected by a telescopic mechanism. The two shrapnel placement grooves, the feeding mechanism, the pulling mechanism, the shrapnel cutting mechanism, the clamping mechanism and the welding mechanism are respectively installed on the right movable mechanism and the left movable mechanism.

[0010] Further, the telescopic mechanism is a screw-nut mechanism driven by a motor.

[0011] Further, the base frame includes a base frame top plate, and there are multiple base frame guide rails extending along the width direction of the base frame on the base frame top plate; the bottom surfaces of the right movable mechanism and the left movable mechanism have a right installation groove and a left installation groove that cooperate with the base frame guide rails; the right movable mechanism and the left movable mechanism are installed on the base frame guide rails through the right installation groove and the left installation groove, and the right movable mechanism and the left movable mechanism can slide left and right along the base frame guide rails.

[0012] Further, the cord fabric placement table includes a fixed table plate in the middle and movable table plates on both sides. The movable table plates on both sides are respectively installed on the right and left movable mechanisms.

[0013] Further, the fixed table plate and the movable table plates on both sides are engaged with each other by rectangular teeth.

[0014] Further, the feeding mechanism includes a runner and a rotating shaft, and the shrapnel is wound around the runner.

[0015] Further, the pulling mechanism further includes a pulling slide rail arranged parallel to the shrapnel placement groove, and a driving mechanism for driving the pulling component to slide along the pulling slide rail.

[0016] Further, the shrapnel cutting mechanism includes a female die, and a cutter adapted to the female die. The cutter is connected to a punching die cylinder for cutting the shrapnel.

[0017] Further, the shrapnel cutting mechanism further includes a punch connected to the punching die cylinder. The punch is also adapted to the female die and is located upstream of the cutter. A hook is provided on the pulling component of the pulling mechanism.

[0018] Furthermore, the welding device further includes a cord fabric cutting mechanism located outside the shrapnel placement groove, and the cord fabric cutting mechanism is connected to the control unit.

[0019] Furthermore, the cord fabric cutting mechanism and the welding mechanism are mounted on a mounting seat so as to be movable up and down, and the mounting seat can move back and forth along a first slide rail parallel to the shrapnel placement groove.

[0020] Furthermore, a cord fabric pressing mechanism that can move up and down is further provided above the cord fabric placement table, and the cord fabric pressing mechanism is connected to the control unit.

[0021] The present invention also provides a welding method, which uses the welding device provided by the present invention to weld the shrapnel to the edge of the cord fabric. The welding method has the following steps:

[0022] S1. Connect the material pulling mechanism to the head end of the shrapnel, and the material pulling mechanism pulls the shrapnel from the material feeding mechanism into the shrapnel placement groove; the clamping mechanism and the material pulling mechanism act together to keep the shrapnel placed in the shrapnel placement groove in a tensioned state;

[0023] S2. Lay the cord fabric flat on the cord fabric placement table so that the edge of the cord fabric covers the shrapnel placement groove;

[0024] S3. Use the welding mechanism to weld the shrapnel in the shrapnel placement groove to the edge of the cord fabric;

[0025] S4. Before or after welding, cut off the shrapnel through the shrapnel cutting mechanism.

[0026] Furthermore, the welding device further includes sensors for detecting whether there is shrapnel in the shrapnel placement groove and the shrapnel cutting mechanism, and a sensor for detecting whether there is cord fabric on the cord fabric placement table. The sensors are all connected to the control unit; before step S3, there is also a step of detecting whether there is shrapnel and cord fabric; before step S4, there is also a step of detecting whether there is shrapnel in the shrapnel cutting mechanism.

[0027] Compared with the prior art, the welding device provided by the present invention has the following advantages:

[0028] 1. It provides a brand-new device for welding plastic shrapnel to cord fabric;

[0029] 2. It has a high degree of automation. Except for manual feeding, all other operations are automatically completed by the device, greatly reducing labor costs and improving efficiency;

[0030] 3. The requirements for operators are relatively low. Only feeding is needed, and ordinary personnel can complete the operation, reducing the labor threshold and cost;

[0031] 4. The operation is simple and the control is precise. All mechanisms on the equipment can achieve control coordination through the control unit;

[0032] 5. The cost of the hoisting curtain produced by this equipment is low, and the welded elastic pieces are not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It shows the overall effect diagram of the welding equipment of the present invention.

[0034] Figure 2 It shows a perspective view of the welding equipment of the present invention excluding the control unit and the curtain pressing mechanism.

[0035] Figure 3 It shows a perspective view of the welding equipment of the present invention with the curtain placed on the control unit and the curtain pressing mechanism removed.

[0036] Figure 4 It shows a perspective view of some components of the base frame and the width adjustment mechanism of the welding equipment of the present invention.

[0037] Figure 5 It shows a perspective view of some components of the base frame and the width adjustment mechanism of the welding equipment of the present invention.

[0038] Figure 6 It shows a bottom view of some components of the base frame and the width adjustment mechanism of the welding equipment of the present invention.

[0039] Figure 7 It shows a partial enlarged view of the cooperation between the installation groove of the width adjustment mechanism and the base frame guide rail of the welding equipment of the present invention.

[0040] Figure 8 It shows a perspective view of the feeding mechanism and the material feeding mechanism of the welding equipment of the present invention.

[0041] Figure 9 It shows a perspective view of the material pulling mechanism of the welding equipment of the present invention.

[0042] Figure 10 It shows a partial enlarged view of the pulling component of the material pulling mechanism of the welding equipment of the present invention.

[0043] Figure 11 It shows a perspective view of the elastic piece cutting mechanism of the welding equipment of the present invention.

[0044] Figure 12 It shows a cross-sectional view of the elastic piece cutting mechanism of the welding equipment of the present invention.

[0045] Figure 13 It is a perspective view showing the clamping mechanism of the welding equipment of the present invention.

[0046] Figure 14 It is a front view showing the feeding mechanism, the material conveying mechanism, the shrapnel cutting mechanism, the pulling mechanism and the clamping mechanism of the welding equipment of the present invention installed on the width adjustment mechanism.

[0047] Figure 15 It is a perspective view showing the cord fabric cutting mechanism and the welding mechanism of the welding equipment of the present invention.

[0048] Figure 16 It is a partial enlarged view showing the cutter of the cord fabric cutting mechanism of the welding equipment of the present invention cutting the cord fabric.

[0049] Figure 17 It is a partial enlarged view showing the welding head of the welding mechanism of the welding equipment of the present invention welding the cord fabric and the shrapnel.

[0050] Figure 18 It is a flow chart showing the welding equipment of the present invention welding the cord fabric and the shrapnel.

[0051] Figure 19 It is a flow chart showing the welding equipment of the present invention welding the cord fabric and the shrapnel including the detection process.

[0052] Figure 20 It is a schematic diagram of the cord fabric fixed with shrapnel.

[0053] Figure 21 It is a schematic diagram showing the hoisting cord passing through the shrapnel and installed in the track.

[0054] 100 Cord fabric

[0055] 200 Shrapnel

[0056] 300 Shrapnel track

[0057] 1 Base frame

[0058] 101 Base frame top plate

[0059] 102 Base frame guide rail

[0060] 103 Hole

[0061] 2 Cord fabric placement table

[0062] 201 Fixed table plate

[0063] 202 Movable table plate

[0064] 3 Shrapnel placement groove

[0065] 4 Width adjustment mechanism

[0066] 401 Right movable mechanism

[0067] 4011 Right bottom plate

[0068] 4012 Right vertical plate

[0069] 4013 Right installation groove

[0070] 402 Left movable mechanism

[0071] 4021 Left bottom plate

[0072] 4022 Left vertical plate

[0073] 4023 Left installation groove

[0074] 404 Motor

[0075] 405 Telescopic rod

[0076] 406 First slide rail

[0077] 5 Loading mechanism

[0078] 501 Runner

[0079] 502 Rotating shaft

[0080] 6 Pulling mechanism

[0081] 601 Pulling component

[0082] 602 Pulling part

[0083] 603 Driving wheel

[0084] 604 Driven wheel

[0085] 605 Belt

[0086] 606 Pulling slide rail

[0087] 607 Axle

[0088] 608 Pulling motor

[0089] 7 Elastic sheet cutting mechanism

[0090] 701 Workbench

[0091] 702 Die punching cylinder

[0092] 703 Female die

[0093] 704 Cutting tool

[0094] 705 Punch

[0095] 8 Clamping mechanism

[0096] 801 First clamping roller

[0097] 802 Second clamping roller

[0098] 9 Cord cutting mechanism

[0099] 901 Mounting seat

[0100] 902 First base

[0101] 903 Second slide rail

[0102] 904 Cutting knife

[0103] 905 First ultrasonic generator

[0104] 906 First cylinder

[0105] 10 Welding mechanism

[0106] 1001 Second base

[0107] 1002 Third slide rail

[0108] 1003 Welding head

[0109] 1004 Second ultrasonic generator

[0110] 1005 Pressing block

[0111] 1006 Second cylinder

[0112] 11 Control unit

[0113] 12 Feeding mechanism

[0114] 1201 Feeding drive roller

[0115] 1202 Feeding pressure roller

[0116] 1203 Feeding motor

[0117] 13 Cord pressing mechanism Specific embodiments

[0118] The following further describes in detail the specific embodiments of the invention with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0119] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0120] Figure 1 It shows the overall effect diagram of the welding equipment of the present invention. Figure 2 It shows the three-dimensional view of the welding equipment of the present invention with the control unit and the curtain pressing mechanism removed. Figure 3 It shows the three-dimensional view of the welding equipment of the present invention with the curtain placed on the control unit and the curtain pressing mechanism. Figure 4 It shows the three-dimensional view of some components of the base frame and the width adjustment mechanism of the welding equipment of the present invention. Figure 5 It shows the three-dimensional view of some components of the base frame and the width adjustment mechanism of the welding equipment of the present invention. Figure 6 It shows the bottom view of some components of the base frame and the width adjustment mechanism of the welding equipment of the present invention. Figure 7 It shows the partial enlarged view of the cooperation between the installation groove of the width adjustment mechanism and the base frame guide rail of the welding equipment of the present invention. Figure 8 It shows the three-dimensional view of the feeding mechanism and the material feeding mechanism of the welding equipment of the present invention. Figure 9 It shows the three-dimensional view of the material pulling mechanism of the welding equipment of the present invention. Figure 10 It shows the partial enlarged view of the pulling component of the material pulling mechanism of the welding equipment of the present invention. Figure 11 It shows the three-dimensional view of the shrapnel cutting mechanism of the welding equipment of the present invention. Figure 12 It shows the cross-sectional view of the shrapnel cutting mechanism of the welding equipment of the present invention. Figure 13 It shows the three-dimensional view of the clamping mechanism of the welding equipment of the present invention. Figure 14 It shows the front view of the feeding mechanism, the material feeding mechanism, the shrapnel cutting mechanism, the material pulling mechanism and the clamping mechanism of the welding equipment of the present invention installed on the width adjustment mechanism. Figure 15 It shows the three-dimensional view of the curtain cutting mechanism and the welding mechanism of the welding equipment of the present invention. Figure 16 It shows the partial enlarged view of the cutter of the curtain cutting mechanism of the welding equipment of the present invention cutting the curtain. Figure 17 It shows the partial enlarged view of the welding head of the welding mechanism of the welding equipment of the present invention welding the curtain and the shrapnel. Figure 18 It shows the flow chart of the welding equipment of the present invention welding the curtain and the shrapnel. Figure 20 It shows the schematic diagram of the curtain with shrapnel fixed. Figure 21 It shows the schematic diagram of the hoisting curtain installed in the track through the shrapnel.

[0121] As Figures 1 to 3 shown, the welding device of the present invention includes: a cord fabric placement table 2 for placing the cord fabric 100; a shrapnel placement groove 3 located on the side of the cord fabric placement table 2 for placing the shrapnel 200; a feeding mechanism 5 located in front of the shrapnel placement groove 3 for supplying the shrapnel 200; a pulling mechanism 6, as Figure 9 and 10 shown, including a pulling component 601 for pulling the leading end of the shrapnel 200 to a preset position (the position in the groove where welding is to be performed) in the shrapnel placement groove 3. The pulling component 601 can be a clamping tool, a hook, or any other component that can be fixedly connected to the shrapnel 200. Under the action of the pulling mechanism 6, the shrapnel 200 stored on the feeding mechanism 5 is pulled and conveyed from upstream to downstream, that is, along the conveying direction of the shrapnel 200, the position closer to the feeding mechanism 5 is the upstream position, and the position farther from the feeding mechanism 5 is the downstream position.

[0122] The shrapnel cutting mechanism 7 includes a cutter 704 for cutting the shrapnel, located in front of the pulling component 601, and the front side refers to the side closer to the upstream position. The shrapnel 200 can be manually passed through the shrapnel cutting mechanism 7 and then fixedly connected to the pulling component 601, so that the pulling component 601 can pull the leading end of the shrapnel 200 to the preset position in the shrapnel placement groove 3, and at the same time, when the shrapnel 200 is pulled out a predetermined length, it is cut by the shrapnel cutting mechanism 7; a clamping mechanism 8 located in front of the shrapnel placement groove 3 for clamping the trailing end of the shrapnel 200, and acting together with the pulling mechanism 6 to keep the shrapnel placed in the shrapnel placement groove 3 in a tensioned state; a welding mechanism 10 located above the shrapnel placement groove 3, as Figure 17 shown, for welding the shrapnel 200 to the cord fabric 100; a control unit 11 for controlling the actions of the pulling mechanism 6, the shrapnel cutting mechanism 7, the clamping mechanism 8, and the welding mechanism 10.

[0123] This welding device can weld plastic shrapnel to the cord fabric. It has a high degree of automation. Except for manual feeding, all other operations are automatically completed by the device, greatly reducing labor costs and improving efficiency. The requirements for operators are relatively low. Only feeding is required, and general personnel can complete the operation, reducing the labor threshold and costs. The operation is simple and the control is precise. All the mechanisms on the device can be controlled and coordinated through the control unit. The winch cord fabric produced by this device has a low cost and the welded shrapnel is not easily detached.

[0124] Furthermore, as Figure 8 and 14As shown in the figure, this embodiment includes a feeding mechanism 12 for conveying the shrapnel 200 from the feeding mechanism 5 downstream. The feeding mechanism 12 includes a feeding driving roller 1201, a feeding pressing roller 1202, and a feeding motor 1203. The shrapnel 200 is clamped between the feeding driving roller 1201 and the feeding pressing roller 1202 by the feeding pressing roller 1202 with a certain pressure. The feeding motor 1203 is in transmission connection with the feeding driving roller 1201, and the feeding motor 1203 is in signal connection with the control unit 11. When the feeding motor 1203 drives the feeding driving roller 1201 to rotate, the shrapnel 200 can be conveyed downstream; when the feeding motor 1203 stops rotating, the feeding driving roller 1201 and the feeding pressing roller 1202 can apply a clamping force to the shrapnel 200, and the feeding mechanism 12 functions as a clamping mechanism.

[0125] The shrapnel 200 in the feeding mechanism 5 can be manually fed into the feeding mechanism 12. The shrapnel passes through the shrapnel cutting mechanism 7 through the feeding mechanism 12. The shrapnel 200 is fixedly connected to the pulling component 601 manually, so that the pulling component 601 can pull the head end of the shrapnel 200 to a preset position in the shrapnel placement groove 3. When the feeding mechanism 12 stops rotating, it cooperates with the pulling mechanism 6 to keep the shrapnel placed in the shrapnel placement groove 3 in a tensioned state, so that the shrapnel 200 can be smoothly welded to the curtain cloth 100. After the shrapnel 200 is welded to the curtain cloth 100, the shrapnel cutting mechanism 7 cuts off the shrapnel 200 welded to the curtain cloth 100.

[0126] In another embodiment of the present invention, a dedicated clamping mechanism 8 can be provided, such as Figure 13 As shown in the figure, the clamping mechanism 8 includes a first clamping roller 801 and a second clamping roller 802; the shrapnel 200 passes between the first clamping roller 801 and the second clamping roller 802 when being pulled by the pulling mechanism 6. It also includes a clamping motor (not shown), and the clamping motor drives the second clamping roller 802 to move up and down. The second clamping roller 802 cooperates with the first clamping roller 801 to clamp or release the shrapnel 200 passing between the first clamping roller 801 and the second clamping roller 802. By clamping the tail end of the shrapnel 200 with the clamping mechanism, the shrapnel placed in the shrapnel placement groove 3 is kept in a tensioned state, so that the shrapnel 200 can be smoothly welded to the curtain cloth 100.

[0127] Therefore, in the present invention, a feeding mechanism 12 can be provided to realize automatic feeding by the feeding mechanism 12; when the feeding stops, the feeding mechanism 12 can also function as a clamping mechanism; in the present invention, the feeding mechanism can also not be provided, and the pulling mechanism 6 is used to realize the conveying of the shrapnel, but a dedicated clamping mechanism 8 needs to be provided; in the present invention, the feeding mechanism 12 and a dedicated clamping mechanism 8 can also be provided simultaneously.

[0128] Furthermore, as shown in Figure 2 and 9As shown, there are two elastic sheet placement grooves 3, feeding mechanisms 5, material pulling mechanisms 6, elastic sheet cutting mechanisms 7, clamping mechanisms 8 and welding mechanisms 10, which are respectively located on both sides of the cord fabric placement table 2.

[0129] Furthermore, as Figure 4 shown, the elastic sheet placement grooves 3, feeding mechanisms 5, material pulling mechanisms 6, elastic sheet cutting mechanisms 7, clamping mechanisms 8 and welding mechanisms 10 are all installed on the width adjustment mechanism 4.

[0130] Furthermore, as Figure 2 、 4 to 6 shown, the width adjustment mechanism 4 includes a right movable mechanism 401 and a left movable mechanism 402 installed on the base frame 1. The right movable mechanism 401 and the left movable mechanism 402 are connected by a telescopic mechanism. The two elastic sheet placement grooves 3, feeding mechanisms 5, material pulling mechanisms 6, elastic sheet cutting mechanisms 7, clamping mechanisms 8 and welding mechanisms 10 are respectively installed on the right movable mechanism 401 and the left movable mechanism 402. For example, the telescopic mechanism can include a motor 404 and a telescopic rod 405; one motor 404 is installed on the left side of the base frame 1 and is fixedly connected to the right movable mechanism 401 of the width adjustment mechanism 4 through a telescopic rod 405; the other motor 404 is installed on the right side of the base frame 1 and is fixedly connected to the left movable mechanism 402 of the width adjustment mechanism 4 through another telescopic rod 405; by simultaneously operating the left and right two motors 405 fixed to the base frame 1, the telescopic rods 406 simultaneously expand and contract, and the right movable mechanism 401 and the left movable mechanism 402 of the width adjustment mechanism 4 can slide on the base frame 1 simultaneously approaching or moving away from each other. The bottom surfaces of the right movable mechanism 401 and the left movable mechanism 402 can be structures such as rollers and slide rails that can enable the right movable mechanism 401 and the left movable mechanism 402 to slide on the base frame 1.

[0131] Furthermore, the telescopic mechanism can also be a screw-nut mechanism driven by a motor. For example, the motor connected to the screw is fixed on the right movable mechanism 401, and the nut cooperating with the screw is fixed on the left movable mechanism 402. When the screw rotates, the right movable mechanism 401 and the left movable mechanism 402 can move relative to each other.

[0132] Furthermore, as Figure 4 and 7As shown in the figure, the right movable mechanism 401 and the left movable mechanism 402 can be installed on the base frame 1 in the following manner: The base frame 1 includes a base frame top plate 101, and there are multiple base frame guide rails 102 extending along the width direction of the base frame 1 on the base frame top plate 101; the bottom surfaces of the right movable mechanism 401 and the left movable mechanism 402 have a right mounting groove 4013 and a left mounting groove 4023 that cooperate with the base frame guide rails 102; the right movable mechanism 401 and the left movable mechanism 402 are installed on the base frame guide rails 102 through the right mounting groove 4013 and the left mounting groove 4023, and the right movable mechanism 401 and the left movable mechanism 402 can slide left and right along the base frame guide rails 102.

[0133] Furthermore, as Figures 4 to 6 shown, the right movable mechanism 401 and the left movable mechanism 402 can also be constituted in the following manner: The right movable mechanism 401 includes a right bottom plate 4011, and the right mounting groove 4013 is fixed to the bottom surface of the right bottom plate 4011; the left movable mechanism 402 includes a left bottom plate 4021, and the left mounting groove 4023 is fixed to the bottom surface of the left bottom plate 4021; the motor 404 is installed on the left side of the back surface of the base frame top plate 101 and is fixedly connected to the right vertical plate 4012 of the right bottom plate 4011 through the telescopic rod 405, and the right vertical plate 4012 is located on the back surface of the right bottom plate 4011 and passes downward through the hole 103 on the right side of the base frame top plate 101; another motor 404 is installed on the right side of the back surface of the base frame top plate 101 and is fixedly connected to the left vertical plate 4022 of the left bottom plate 4021 through another telescopic rod 405, and the left vertical plate 4022 is located on the back surface of the left bottom plate 4021 and passes downward through the hole 103 on the left side of the base frame top plate 101.

[0134] Furthermore, as Figure 4 shown, the curtain cloth placing table 2 includes a fixed table plate 201 in the middle and movable table plates 202 on both sides, and the movable table plates 202 on both sides are respectively installed on the left and right movable mechanisms 401, 402. When the movable table plates 202 move with the left and right movable mechanisms 401, 402, the width of the curtain cloth placing table 2 can be adjusted.

[0135] Furthermore, as Figure 4 shown, the fixed table plate 201 and the movable table plates 202 on both sides are engaged with each other through rectangular teeth. Through this structure, when adjusting the width of the curtain cloth placing table 2, a continuous straight gap will not be formed between the fixed table plate 201 and the movable table plates 202 on both sides, so that the entire curtain cloth can be supported, and the curtain cloth can be prevented from wrinkling due to the continuous straight gap.

[0136] Furthermore, as Figure 8 shown, the feeding mechanism 5 includes a runner 501 and a rotating shaft 502, and a shrapnel 200 is wound around the runner 501.

[0137] Further, as Figure 9 and 10 shown, the blanking mechanism 6 further includes a blanking slide rail 606 arranged in parallel with the shrapnel placement groove 3, and a driving mechanism for driving the blanking component 601 to slide along the blanking slide rail 606. The driving mechanism includes a driving wheel 603, a driven wheel 604, a belt 605 sleeved on the driving wheel 603 and the driven wheel 604, and a blanking motor 608; a blanking component 601 is fixed on the belt 604, and the blanking part 602 of the blanking component 601 is located in the shrapnel placement groove 3; the blanking motor 608 drives the left and right driving wheels 603 to rotate synchronously, so that the belt 605 moves to drive the blanking component 601 to move, and pulls the head end of the shrapnel 200 to a preset position in the shrapnel placement groove 3. The blanking motor 608 can be set to two, so that they respectively drive the left and right driving wheels 603 to rotate; it can also be set to 1, and the driving wheel 603 is synchronously driven to rotate through the axle 607.

[0138] Further, as Figure 11 and 12 shown, the shrapnel cutting mechanism 7 includes a concave die 703 and a cutting knife 704 adapted to the concave die 703. The cutting knife 704 is connected to the punching die cylinder 702 and is used for cutting the shrapnel 200. The concave die 703 and the punching die cylinder 702 are fixed on the workbench 701.

[0139] Further, as Figure 11 and 12 shown, the shrapnel cutting mechanism 7 further includes a punch 705 connected to the punching die cylinder 702. The punch 705 is also adapted to the concave die 703 and is located at the upstream position of the cutting knife 704. A hook 602 is provided on the blanking component 601 of the blanking mechanism 6. The punch 705 punches the head end of the shrapnel, and the head end of the shrapnel can be hung on the hook 602 through the punched hole (as Figure 14 shown), so that the blanking component 601 can pull the head end of the shrapnel 200 to a preset position in the shrapnel placement groove 3. That is, every time the punching die cylinder 702 moves, two actions can be completed simultaneously: driving the cutting knife 704 to cut the tail end of the previous section of shrapnel 200, and driving the punch 705 to punch the head end of the next section of shrapnel 200.

[0140] Further, as Figure 2 、 15As shown in FIGS. 15 and 16, the welding device further includes a curtain cloth cutting mechanism 9 located outside the shrapnel placement groove 3, and the curtain cloth cutting mechanism 9 is connected to the control unit 11. The curtain cloth cutting mechanism 9 includes: a mounting base 901 that can move back and forth along a first slide rail 406 parallel to the shrapnel placement groove 3. A second slide rail 903 and a third slide rail 1002 extending in the height direction thereof are provided on the mounting base 901; a first base 902 mounted on the second slide rail 903 and capable of moving up and down along the second slide rail 903; a cutter 904 fixed to the first base 902 and capable of moving with the first base 902 to a cutting position to cut the curtain cloth 100; a first ultrasonic generator 905 fixed to the first base 902 to provide ultrasonic waves for the cutter 904 to cut the curtain cloth 100; a first cylinder 906 fixed to the mounting base 901 and connected to the first base 902 to drive the first base 902 to move up and down along the second slide rail 903. By cutting along the length direction of the welding device with the curtain cloth cutting mechanism 9, the redundant curtain cloth on both sides of the curtain cloth can be cut off.

[0141] Further, as Figure 2 , 15 and FIGS. 15 and 16 show, the curtain cloth cutting mechanism 9 and the welding mechanism 10 are mounted on a mounting base 901 so as to be movable up and down, and the mounting base 901 can move back and forth along a first slide rail 406 parallel to the shrapnel placement groove 3. The curtain cloth cutting mechanism 9 and the welding mechanism 10 can also be respectively mounted on two mounting bases that can move back and forth along a first slide rail 406 parallel to the shrapnel placement groove 3.

[0142] As Figure 2 , 15 and FIGS. 15 and 17 show, the welding mechanism 10 includes: a second base 1001 mounted on the third slide rail 1002 and capable of moving up and down along the third slide rail 1002; a welding head 1003 fixed to the second base 1001 and capable of moving with the second base 1001 to a welding position to weld the shrapnel 200 and the curtain cloth 100; a second ultrasonic generator 1004 fixed to the second base 1001 to provide ultrasonic waves for the welding head 1003 to perform welding; a pressing block 1005 fixed to the second base 1001 and located on both sides of the welding head 1003, capable of moving with the second base 1001 to a position where the curtain cloth 100 is pressed. By pressing the curtain cloth 100 and the shrapnel 200 located below the curtain cloth, the shrapnel 200 can be smoothly welded to the curtain cloth 100; a second cylinder 1006 fixed to the mounting base 901 and connected to the second base 1001 to drive the second base 1001 to move up and down along the third slide rail 1002. By welding with the welding mechanism 10, the strip-shaped shrapnel located below the two side edges of the curtain cloth can be welded to the two side edges of the curtain cloth.

[0143] Further, as Figure 1As shown in the figure, above the fabric placing table 2, there is also a fabric pressing mechanism 13 that can move up and down. The fabric pressing mechanism 13 is connected to the control unit 11. By controlling the fabric pressing mechanism 13 to move downward to contact the fabric 100 on the fabric placing table 2 through the control unit 11, the fabric 100 can be fixed to the fabric placing table 2. By pressing the fabric with the fabric pressing mechanism 13, the fabric can be prevented from being displaced incorrectly.

[0144] Hereinafter, a welding method for welding the shrapnel to the fabric using the welding equipment provided by the present invention will be described.

[0145] As Figure 18 shown, a welding method uses the welding equipment provided by the present invention to weld the shrapnel 200 to the edge of the fabric 100. This welding method has the following steps:

[0146] S1. Connect the material pulling mechanism 6 to the head end of the shrapnel 200. The material pulling mechanism 6 pulls the shrapnel 200 from the material feeding mechanism 5 into the shrapnel placing groove 3. The clamping mechanism 8 and the material pulling mechanism 6 act together to keep the shrapnel 200 placed in the shrapnel placing groove 3 in a tensioned state.

[0147] S2. Lay the fabric 100 flat on the fabric placing table 2 so that the edge of the fabric 100 covers the shrapnel placing groove 3.

[0148] S3. Use the welding mechanism 10 to weld the shrapnel 200 in the shrapnel placing groove 3 to the edge of the fabric 100.

[0149] S4. Before or after welding, cut off the shrapnel 200 through the shrapnel cutting mechanism 7. In the case where the feeding mechanism 12 also serves as the clamping mechanism, the shrapnel cutting mechanism 7 is arranged downstream of the feeding mechanism 12, and the shrapnel 200 should be cut off after welding; in the case where a dedicated clamping mechanism 8 is provided, the shrapnel cutting mechanism 7 is arranged upstream of the clamping mechanism 8, and the shrapnel 200 can be cut off before welding, and the clamping mechanism 8 clamps the tail end of the cut-off shrapnel 200.

[0150] Furthermore, the welding equipment further includes sensors for detecting whether there is shrapnel 200 in the shrapnel placing groove 3 and the shrapnel cutting mechanism 7, and sensors for detecting whether there is fabric 100 on the fabric placing table 2. The sensors are all connected to the control unit 11; as Figure 19 shown, before step S3 of this welding method, it also includes the step of detecting whether there is shrapnel 200 and fabric 100. If not detected, the system will alarm; before step S4, it also includes the step of detecting whether there is shrapnel 200 in the shrapnel cutting mechanism 7. If not detected, the system will alarm.

[0151] Further, the welding device may further include sensors for detecting whether there is a shrapnel 200 in the feeding mechanism 5 and for detecting whether the shrapnel 200 exists during the process of the pulling member 601 pulling the leading end of the shrapnel 200 to a preset position in the shrapnel placement groove 3. The sensors are all connected to the control unit 11; as Figure 19 shown, the welding method may further include the step of detecting whether there is a shrapnel 200 in the feeding mechanism 5. If not detected, the system will alarm; the step of detecting whether the shrapnel 200 continuously exists during the process of the pulling member 601 pulling the leading end of the shrapnel 200 to a preset position in the shrapnel placement groove 3. If not detected, the system will alarm.

[0152] Further, the welding method further has a process of detecting whether the cutting parameters are qualified. If the cutting parameters are unqualified, the system will alarm; it also has a process of detecting whether the distance between two shrapnel placement grooves 3 meets the set distance. If it does not meet the set distance, automatic compensation adjustment will be made according to the difference. If the automatic compensation adjustment exceeds three times, the system will alarm; it also has a process of detecting whether the welding parameters are qualified. If the welding parameters are unqualified, re-welding will be performed.

[0153] In summary, the present invention provides a brand-new device for welding plastic shrapnel to a curtain fabric. It has a high degree of automation. Except for manual feeding, all other operations are automatically completed by the device, greatly reducing labor costs and improving efficiency; it has low requirements for operators. Only feeding is required and general personnel can complete the operation, reducing the labor threshold and cost; the operation is simple and the control is precise. All mechanisms on the device can be controlled and coordinated through the control unit; the cost of the winch curtain produced by this device is low and the welded shrapnel is not easily detached.

[0154] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A welding device, characterized in that the welding device comprises: a cord fabric placing table (2) for placing cord fabric (100); a shrapnel placing groove (3) located on the side of the cord fabric placing table (2) for placing shrapnel (200); a feeding mechanism (5) located in front of the shrapnel placing groove (3) for supplying the shrapnel (200); a pulling mechanism (6) comprising a pulling component (601) for pulling the leading end of the shrapnel (200) to a preset position in the shrapnel placing groove (3); a shrapnel cutting mechanism (7) located in front of the pulling component (601) and comprising a cutter (704) for cutting the shrapnel; a clamping mechanism (8) located in front of the shrapnel placing groove (3) for clamping the trailing end of the shrapnel (200), and acting together with the pulling mechanism (6) to keep the shrapnel placed in the shrapnel placing groove (3) in a tensioned state; a welding mechanism (10) located above the shrapnel placing groove (3) for welding the shrapnel (200) to the cord fabric (100); a control unit (11) for controlling the actions of the pulling mechanism (6), the shrapnel cutting mechanism (7), the clamping mechanism (8) and the welding mechanism (10).

2. The welding device according to claim 1, characterized in that: the clamping mechanism comprises a feeding mechanism (12) for conveying the shrapnel (200) downstream from the feeding mechanism (5); the feeding mechanism (12) comprises a feeding driving roller (1201), a feeding pressing roller (1202) and a feeding motor (1203), the shrapnel (200) is clamped between the feeding driving roller (1201) and the feeding pressing roller (1202) by the feeding pressing roller (1202) with a certain pressure, the feeding motor (1203) is in transmission connection with the feeding driving roller (1201), and the feeding motor (1203) is in signal connection with the control unit (11).

3. The welding device according to claim 1 or 2, characterized in that: the clamping mechanism (8) comprises a first clamping roller (801) and a second clamping roller (802); when the shrapnel (200) is pulled by the pulling mechanism (6), it passes between the first clamping roller (801) and the second clamping roller (802).

4. The welding device according to claim 1, characterized in that: there are two each of the shrapnel placing groove (3), the feeding mechanism (5), the pulling mechanism (6), the shrapnel cutting mechanism (7), the clamping mechanism (8) and the welding mechanism (10), which are respectively located on both sides of the cord fabric placing table (2).

5. The welding device according to claim 4, characterized in that: the shrapnel placing groove (3), the feeding mechanism (5), the pulling mechanism (6), the shrapnel cutting mechanism (7), the clamping mechanism (8) and the welding mechanism (10) are all installed on a width adjusting mechanism (4).

6. The welding device according to claim 5, characterized in that: The width adjustment mechanism (4) includes a right movable mechanism (401) and a left movable mechanism (402) installed on the base frame (1). The right movable mechanism (401) and the left movable mechanism (402) are connected by a telescopic mechanism. The two elastic sheet placement grooves (3), the sheet feeding mechanism (5), the sheet pulling mechanism (6), the elastic sheet cutting mechanism (7), the clamping mechanism (8), and the welding mechanism (10) are respectively installed on the right movable mechanism (401) and the left movable mechanism (402).

7. The welding device according to claim 6, wherein: The telescopic mechanism is a screw-nut mechanism driven by a motor (404).

8. The welding device according to claim 6, wherein: The base frame (1) includes a base frame top plate (101), and the base frame top plate (101) is provided with a plurality of base frame guide rails (102) extending along the width direction of the base frame (1); The bottom surfaces of the right movable mechanism (401) and the left movable mechanism (402) are provided with a right installation groove (4013) and a left installation groove (4023) that cooperate with the base frame guide rail (102); The right movable mechanism (401) and the left movable mechanism (402) are installed on the base frame guide rail (102) through the right installation groove (4013) and the left installation groove (4023), and the right movable mechanism (401) and the left movable mechanism (402) can slide left and right along the base frame guide rail (102).

9. The welding device according to claim 6, wherein: The curtain cloth placement table (2) includes a fixed table board (201) in the middle and movable table boards (202) on both sides. The movable table boards (202) on both sides are respectively installed on the left and right movable mechanisms.

10. The welding device according to claim 9, wherein: The fixed table board (201) and the movable table boards (202) on both sides are engaged with each other by rectangular teeth.

11. The welding device according to claim 1, wherein: The sheet feeding mechanism (5) includes a runner (501) and a rotating shaft (502), and the elastic sheet (200) is wound around the runner (501).

12. The welding device according to claim 1, wherein, The sheet pulling mechanism (6) further includes a sheet pulling slide rail (606) arranged parallel to the elastic sheet placement groove (3), and a driving mechanism for driving the pulling component (601) to slide along the sheet pulling slide rail (606).

13. The welding device according to claim 1, wherein: The elastic sheet cutting mechanism (7) includes a concave die (703) and a cutter (704) adapted to the concave die (703). The cutter (704) is connected to a punching die cylinder (702) for cutting the elastic sheet (200).

14. The welding device according to claim 13, wherein: The shrapnel cutting mechanism (7) further includes a punch (705) connected to the die cylinder (702). The punch (705) is also adapted to the die (703) and is located upstream of the cutter (704). A hook (602) is provided on the pulling member (601) of the pulling mechanism (6).

15. The welding equipment according to claim 1, characterized in that: it further includes a cord fabric cutting mechanism (9) located outside the shrapnel placement groove (3). The cord fabric cutting mechanism (9) is connected to the control unit (11).

16. The welding equipment according to claim 15, characterized in that: the cord fabric cutting mechanism (9) and the welding mechanism (10) are movably mounted up and down on a mounting base (901). The mounting base (901) can move back and forth along a first slide rail (406) parallel to the shrapnel placement groove (3).

17. The welding equipment according to claim 1, characterized in that: above the cord fabric placement table (2), there is also a cord fabric pressing mechanism (13) that can move up and down. The cord fabric pressing mechanism (13) is connected to the control unit (11).

18. A welding method that uses the welding equipment according to claim 1 to weld the shrapnel (200) to the edge of the cord fabric (100), characterized in that, the welding method has the following steps: S1. Connect the pulling mechanism (6) to the head end of the shrapnel (200). The pulling mechanism (6) pulls the shrapnel (200) from the feeding mechanism (5) into the shrapnel placement groove (3). The clamping mechanism (8) and the pulling mechanism (6) act together to keep the shrapnel (200) placed in the shrapnel placement groove (3) in a tensioned state; S2. Lay the cord fabric (100) flat on the cord fabric placement table (2) so that the edge of the cord fabric (100) covers the shrapnel placement groove (3); S3. Use the welding mechanism (10) to weld the shrapnel (200) in the shrapnel placement groove (3) to the edge of the cord fabric (100); S4. Before or after welding, cut the shrapnel (200) through the shrapnel cutting mechanism (7).

19. The welding method according to claim 18, characterized in that: the welding equipment further includes sensors for detecting whether there is the shrapnel (200) in the shrapnel placement groove (3) and the shrapnel cutting mechanism (7), and sensors for detecting whether there is cord fabric (100) on the cord fabric placement table (2). The sensors are all connected to the control unit (11). Before step S3, there is also a step of detecting whether there is the shrapnel (200) and cord fabric (100). Before step S4, there is also a step of detecting whether there is the shrapnel (200) in the shrapnel cutting mechanism (7).

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