A welding mechanism for continuous feeding

Abstract

The present invention provides a welding mechanism with continuous feeding, which includes a frame module, a feeding tray module, a head runner fixing module, a tail feeding module, a welding head module, a cutting module and a moving and positioning module arranged on the frame module. Among them, the feeding tray module includes more than 2 layers of feeding tray components; the number of the head runner fixing modules is the same as that of the feeding tray modules, and they are respectively arranged at the output ends of each layer of feeding tray components; a substrate capable of vertical movement is provided on the moving and positioning module, and the tail feeding module, the welding head module and the cutting module are respectively arranged on the substrate. The cutting module is arranged at the output end of the head runner fixing module and in front of the tail feeding module. The tail feeding module makes the tail and the head of the feeding tray components of the adjacent layer overlap each other in a staggered manner; the welding head module is used to weld the tail and the head together. The present invention improves work efficiency, reduces labor costs and increases the operation rate of the continuous feeding welding machine.

Description

Technical Field

[0001] The present invention relates to a welding mechanism, and more particularly to a welding mechanism for continuous feeding. Background Art

[0002] In the field of thin material cutting and thin material processing and welding machinery commonly used in the industry, pipeline operation is a common continuous working method. In the existing continuous feeding scheme structure, the main purpose is to connect strip-shaped products in each coil by riveting method to achieve the effect of continuous feeding to the production line. That is, by overlapping the round holes of the strip itself and then riveting, the pressing method is to manually press the rivet with a clamp to achieve the purpose of continuous cyclic feeding to the pipeline.

[0003] The existing structure of the feeding machine is manual riveting. There is a buffer wheel between the feeding machine and the production line to buffer the time of manual riveting without affecting the uniform feeding of the production line.

[0004] The biggest disadvantage is that it is easy to break the strip due to insufficient buffer time. The buffer time is about 30 seconds. A skilled operator can complete one riveting in 15 seconds under smooth conditions, but there are many factors that can easily lead to abnormal riveting, as follows:

[0005] 1. When overlapping and perforating, the rivet skews and falls off;

[0006] 2. The rivet has impurities in its material and is easy to break;

[0007] 3. The head of the strip is deformed, resulting in difficult riveting;

[0008] 4. When using the clamp, excessive force is applied, resulting in severe deformation and breakage of the rivet.

[0009] 4. The time for threading the material is long and the buffer time is insufficient;

[0010] 5. When it is necessary to thread the material after changing the coil, if the operator is not present or there is no time to thread the material, it will lead to abnormal production.

[0011] This feeding mechanism is for feeding an automatic electroplating line, and these abnormal stops will ultimately result in the waste of the terminals of the entire production line due to electroplating timeout. Summary of the Invention

[0012] In order to solve the problems of negligence, low efficiency, one operator per machine, a large number of miscellaneous personnel, and difficult riveting in the prior art, the present invention provides a welding mechanism for continuous feeding.

[0013] The present invention includes a frame module, a feeding disk module, a head flow channel fixing module, a tail feeding module, a welding head module, a cutting module, and a moving and positioning module provided on the frame module, wherein,

[0014] The feeding tray module includes more than 2 layers of feeding tray components, and each layer of feeding tray component can rotate and feed independently;

[0015] The number of the head material flow fixing modules is the same as that of the feeding tray modules, and they are respectively arranged at the output ends of each layer of feeding tray components for rectifying and fixing the materials released by the feeding tray components;

[0016] A substrate capable of vertical movement is provided on the moving and positioning module, and the tail material feeding module, the welding head module and the cutting module are respectively arranged on the substrate,

[0017] The cutting module is arranged at the output end of the head material flow fixing module, in front of the tail material feeding module, and is used for cutting the tail material;

[0018] The tail material feeding module is used for clamping and conveying the tail material for a certain length, so that the tail material and the head materials of the feeding tray components of adjacent layers are overlapped with each other in a staggered manner, and waiting for the welding head module to weld;

[0019] The welding head module is used for welding the tail material and the head material together in the area where the tail material and the head material are overlapped with each other in a staggered manner.

[0020] For further improvement of the present invention, it further includes a controller. An electric control box is provided below the frame module, and the controller is arranged in the electric control box.

[0021] For further improvement of the present invention, it further includes an operation module arranged on the frame module, and the operation module is connected to the controller.

[0022] For further improvement of the present invention, the operation module includes a touch screen, operation buttons and a keyboard input device.

[0023] For further improvement of the present invention, the feeding tray module further includes a servo motor. The feeding tray component is connected to the servo motor through a rotating shaft, and the servo motor drives the feeding tray component to rotate horizontally.

[0024] For further improvement of the present invention, it further includes a paper bag recycling tray component. The paper bag recycling tray component includes recycling trays with the same number as the feeding tray components and arranged at the same height, and further includes a driving device for driving the recycling trays to rotate horizontally in a direction opposite to the rotation direction of the feeding tray components.

[0025] For further improvement of the present invention, the head material flow fixing module includes double guide wheels, a flow channel and a clamping structure. The double guide wheels and the clamping structure are respectively arranged at both ends of the flow channel, wherein the double guide wheels are arranged close to the output end of the feeding tray component.

[0026] The present invention is further improved. The tail material feeding module includes a clamping device and a conveying device for driving the horizontal movement of the clamping device. Among them, the clamping device is arranged behind the cutting module and on both sides of the material feeding path.

[0027] The present invention is further improved. The welding head module is a laser welding module, and the moving and positioning module is a lead screw sliding table motion module, a linear motor, a linear module or a large-scale KK module. The moving and positioning module is arranged on the frame through a column.

[0028] The present invention is further improved. The cutting module includes a double-axis cylinder, a cutting punch and a cutting blade arranged horizontally. Among them, the cutting punch is arranged at the bottom of the double-axis cylinder, and the cutting blade is arranged in cooperation with the cutting punch.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: By means of multi-disk material feeding switching and the up-and-down movement of a welding head for welding to connect the material tapes together, the purpose of continuous feeding to the production line is ensured. At the same time, the labor cost is greatly reduced, and the operating rate of the continuous feeding welding machine is increased; Bilateral pressure welding increases the welding stability and the accuracy of repeated positioning of this welding mechanism, greatly improves the production efficiency, and reduces the production line stop caused by human abnormalities; The combined method of sharing a power module for welding and cutting ensures the absolute position of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 and Figure 2 is a schematic structural diagram of the present invention;

[0031] Figure 3 is Figure 2 a partially enlarged view;

[0032] Figure 4 is a schematic top view structure;

[0033] Figure 5 is Figure 4 a partially enlarged view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0035] As Figures 1 - 5As shown in the figure, the present invention includes a frame module 9, a loading tray module 2, a material head runner fixing module 3, a material tail feeding module 6, a welding head module 4, a cutting module 13, and a moving and positioning module 5 arranged on the frame module 9. In this example, it also includes a controller. An electric control box is provided below the frame module 9, and the controller is arranged inside the electric control box. For the convenience of operation, this example also includes an operation module arranged on the frame module. In this example, the touch screen and operation buttons are arranged above the frame module through the through hole 901 on the upper surface of the frame module 9 and are connected to the controller.

[0036] The operation module is installed on the front side of the machine table and is composed of a button operation panel and a touch screen, including indicator lights. The button operation panel consists of start, pause, reset, and emergency stop buttons, mainly controlling the start and stop of the machine table. The touch screen can separately edit the actions and parameters of each module of the machine table, which is convenient and reliable. It can also be other input control devices such as a keyboard input device.

[0037] The following is a detailed description of each module.

[0038] The frame module 9 in this example is a frame welded by horizontal and vertical 120mm * 120mm square tubes. The upper part of the frame installs each module component, and the lower part of the frame installs the position of the electric control box. The upper part of the electric control box is made of a large aluminum plate to form a desktop. The combined overall function is to support all the required components.

[0039] The loading tray module 2 in this example is installed on the left side of the tabletop and includes 5 layers of loading tray components. Each layer of loading tray component includes a loading tray and a motor for controlling the rotation of the loading tray, which can rotate and feed materials separately; all the loading tray components are installed on the vertical square tube 1 through bearings, and bearings are also installed at the roots and are movable, facilitating the rotation and dislocation for feeding.

[0040] The loading tray component in this example is composed of three parts: a servo motor belt cavity; a rotating tray; and a paper tape recycling tray. The paper tape recycling tray in this example is fixed near the rotating tray through the square tube 11, has the same number of layers as the rotating tray, and is arranged at the same height as the rotating tray. The action is that the servo motor belt drives the rotating tray to feed materials. The materials rotated out enter the next module (the material head runner fixing module 3) through the runner, and the paper tape rotated out enters the paper tape recycling tray. The principle of the paper tape recycling tray is that the torsion motor rotates continuously in the reverse direction of the rotation direction of the rotating tray with a certain pulling force to achieve the effect of paper tape recycling. If the material in this example does not require paper tape peeling, the paper tape recycling tray does not need to be set.

[0041] In this example, the number of material heads flowing into the fixed module 3 is the same as the number of feeding tray modules, and they are respectively set at the output ends of each layer of feeding tray components. The material head flow channel fixed module 3 rectifies and fixes the discharged materials. The material head flow channel fixed module includes double guide wheels 301, a flow channel 302, and a clamping cylinder 303. The function of the double guide wheels 301 is to hold the discharged materials vertically without damaging the key products. There is a slight clamping force between the double guide wheels 301, and they rotate passively and enter the flow channel 302. The width of the flow channel groove is 1 / 2 larger than the total thickness of the material strip. Its function is to slightly hold a certain length of the product to ensure it reaches the next station vertically. The clamping cylinder 303 clamps the material head, and the clamping part clamps on the non-functional surface of the material strip to ensure that the products on the material strip are not damaged, waiting for the material tail feeding module to feed. The rectifying function of the material head flow channel fixed module is thus completed.

[0042] In this example, the material tail feeding module 6 is installed at the output end of the material head flow channel fixed module 3 and includes two cylinders (a clamping cylinder 602 and a linear motion cylinder 601). Among them, the clamping cylinder 602 drives the clamping block 603 to clamp the material. The function of the two cylinders is to clamp the material and convey it to a certain length. Its function is to stack the materials alternately with the material head and wait for the welding module 4 to weld. The clamping block 603 is arranged on both sides of the material feeding path behind the cutting module 13. Of course, the cylinders in this example can be replaced by a stepper motor or a servo motor cooperating with a ratchet, but the motion structure of the cylinder is relatively simple and practical, with the lowest cost.

[0043] In this example, the welding head module 4 is installed directly behind and to the side of the material tail feeding module 6 and the material head flow channel fixed module 3. The welding head module 4 is supported by a KK module (a lead screw sliding table motion module) for the laser optical path. The laser welding head is aligned with the position where the material head and the material tail are stacked alternately. Its purpose is to weld and fix the material head and the material tail together to achieve the function of continuous material feeding until the entire tray of materials is discharged and cut by the cutting module. In this example, the fiber laser welding method is adopted, and it can also be replaced by lasers of other brands or ultrasonic welding.

[0044] In this example, the cutting module 13 is set at the output end of the material head flow channel fixed module 3 and in front of the material tail feeding module 6. It consists of a horizontal double-axis cylinder 1301, a cutting punch 1302, and a cutting edge. Among them, the cutting punch 1302 is arranged at the bottom of the double-axis cylinder 1301, and the cutting edge is arranged in cooperation with the cutting punch 1302.

[0045] The function of the cutting module 13 in this example is to trim the material tail neatly and then feed it forward by a fixed step. The purpose is to cut out a neat material tail to be neatly and beautifully butted with the material head part of the next tray. After cutting, it is quickly moved to the adjacent tray by the moving positioning module 5 to continue the welding and discharging.

[0046] The mobile positioning module 5 of this example is installed on the rightmost column 10 of the machine, and is driven by a servo motor to drive the screw. High-precision linear slides are attached to both sides of the screw to ensure that the positioning at each layer is very accurate. And the base plate of this mobile positioning module 5 is also equipped with the tail feeding module 6, welding head module 4, and cutting module 13, and these modules are necessary conditions for the welding positioning of each layer. The reason why they are carried together and move at the same time is to minimize the cumulative error of the movement coordination of each module. The power part of this example is composed of a screw slide motion module (also called a KK module), which can also be replaced by a linear motor, a linear module, a large KK module, etc.

[0047] This example works like this:

[0048] Working principle: The disc-loaded incoming material 14 is pulled out through the feed tray (the feed tray assembly is completed), the material head is fixed on the flow channel welding module 3, and the material is waiting for welding discharge (the material head flow channel fixing module 3 is completed). The packaging paper tape pulled out is directly recycled to the storage tray through the paper tape guide wheel (the paper tape storage tray module is completed), and the current layer is automatically cut after the discharge is completed (the cutting module 13 is completed), and the tail of the material is left on the mobile positioning module 5, and switched to another layer (the mobile positioning module 5), and the current layer focal length is automatically adjusted, and the feeding, clamping, and welding actions are performed (the tail feeding module 6 and the welding head module 4 are completed). After welding is completed, all the clamps are in a loose state, and the material is smoothly passed to the production line through each flow channel and the rear double guide wheel 15 and the buffer wheel 8. The counter will count the passed materials and match the discharge and production speed. This cycle can achieve the effect of continuous discharge and welding.

[0049] In summary, the technical innovations of this example are as follows:

[0050] The transmission power source in this technical solution adopts a screw slide motion module, the essence of which is decomposed into the following three parts:

[0051] 1. Precision screw drive - precise; 2. Servo motor control - fast and accurate; 3. Precision guide rail slider driven - high precision and low wear; By combining the above three points, the purpose of mobile positioning can be achieved more accurately and quickly;

[0052] The cutting power source in this example is a double-rod cylinder, and its essence can be broken down into the following two parts: 1. The cutting structure is simple and practical, easy to install, and only requires a double-rod cylinder, a punch, and a cutting knife. 2. The air circuit of the cylinder is in a normally closed state, and it only takes 0.5 seconds to complete the cutting action - the cutting speed is fast.

[0053] The frame of this example adopts a closed square tube welding as an integrated structure, which greatly reduces the vibration and deflection generated during mechanical movement and improves the stability of mobile positioning welding.

[0054] In this example, a bilateral pressure welding structure is mainly adopted, which increases the welding stability and the accuracy of repeated positioning of this welding device, ensuring a low abnormal rate.

[0055] This example adopts a five-layer material feeding tray structure. After one-time material loading is completed, no personnel are required to be present within 40 minutes. The on-site personnel arrangement is reduced from one person per machine to one person for three machines, greatly reducing the labor cost and increasing the operating rate of the continuous material feeding welding machine. Of course, the number of layers of this example can also be adjusted according to requirements.

[0056] The present invention has the following beneficial effects:

[0057] (1) By means of multi-tray material feeding switching and the up-and-down movement of a welding head for welding to connect the material tapes together, the present invention ensures the purpose of continuous material feeding to the production line;

[0058] (2) This material feeding tray assembly ensures continuous material feeding in a way of 5-layer switchable, and a torque motor recovery disc device for paper tape recovery is provided on each layer. Besides ensuring smooth material feeding, the paper tape can also be recovered and reused;

[0059] (3) The combination mode of sharing a power module for welding and cutting in the present invention ensures the absolute position of welding. It is debugged in one go during machine adjustment. The switching of the positions of each layer is executed by a servo motor for precise positioning;

[0060] (4) There is stable pressure on both the front and the back of the welding range of the present invention to ensure the firmness of welding conditions, thereby achieving a continuous and stable effect to ensure continuous production of the production line, greatly improving the production efficiency, and reducing the production line stoppage caused by human abnormalities;

[0061] (5) The way of connecting the material tapes together in the present invention is by fiber laser welding, which far exceeds the efficiency and firmness of the manual riveting method, and also reduces the production line stoppage caused by human abnormalities.

[0062] The above-described specific embodiments are the preferred embodiments of the present invention, and do not limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific embodiment. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A welding mechanism with continuous feeding, characterized in that: It includes a frame module, a material feeding tray module, a material head runner fixing module, a material tail feeding module, a welding head module, a cutting module, and a moving and positioning module. Among them, the material feeding tray module includes more than 2 layers of material feeding tray components, and each layer of material feeding tray component can rotate and feed materials independently; the number of the material head runner fixing modules is the same as that of the material feeding tray modules, and they are respectively arranged at the output ends of each layer of material feeding tray components for rectifying and fixing the materials released by the material feeding tray components; a substrate capable of vertical movement is provided on the moving and positioning module, and the material tail feeding module, the welding head module, and the cutting module are respectively arranged on the substrate, the cutting module is arranged at the output end of the material head runner fixing module and in front of the material tail feeding module for cutting the material tail; the material tail feeding module is used for clamping and conveying the material tail by a certain length, so that the material tail and the material head of the material feeding tray component of the adjacent layer are overlapped with each other in a staggered manner, waiting for the welding head module to weld; the welding head module is used for welding the material tail and the material head together in the area where the material tail and the material head are overlapped with each other in a staggered manner.

2. The welding mechanism with continuous feeding according to claim 1, characterized in that: It also includes a controller. An electric control box is provided below the frame module, and the controller is arranged in the electric control box.

3. The welding mechanism with continuous feeding according to claim 2, characterized in that: It also includes an operation module arranged on the frame module, and the operation module is connected to the controller.

4. The welding mechanism for continuous feeding according to claim 3, characterized in that: The operation module includes a touch screen, operation buttons, and a keyboard input device.

5. The welding mechanism with continuous feeding according to any one of claims 1-4, characterized in that: The material feeding tray module also includes a servo motor. The material feeding tray component is connected to the servo motor through a rotating shaft, and the servo motor drives the material feeding tray component to rotate horizontally.

6. The welding mechanism with continuous feeding according to claim 4, characterized in that: It also includes a paper bag recycling tray component. The paper bag recycling tray component includes recycling trays with the same number as the material feeding tray components and arranged at the same height, and also includes a driving device for driving the recycling trays to rotate horizontally in a direction opposite to the rotating direction of the material feeding tray components.

7. The welding mechanism for continuous feeding according to any one of claims 1-4, characterized in that: The material head runner fixing module includes double guide wheels, a runner, and a clamping structure. The double guide wheels and the clamping structure are respectively arranged at both ends of the runner. Among them, the double guide wheels are arranged close to the output end of the material feeding tray component.

8. The welding mechanism with continuous feeding according to any one of claims 1-4, characterized in that: The material tail feeding module includes a clamping device and a conveying device for driving the clamping device to move horizontally. Among them, the clamping device is arranged behind the cutting module and on both sides of the material feeding path.

9. The welding mechanism with continuous feeding according to any one of claims 1-4, characterized in that: The welding head module is a laser welding module, and the moving and positioning module is a lead screw slide table motion module, a linear motor, a linear module, or a large KK module. The moving and positioning module is arranged on the frame through a column.

10. The welding mechanism with continuous feeding according to any one of claims 1-4, characterized in that: The cutting module includes a horizontally arranged double-axis cylinder, a cutting punch, and a cutting edge. Among them, the cutting punch is arranged at the bottom of the double-axis cylinder, and the cutting edge is arranged in cooperation with the cutting punch.

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