A small automatic saw chain guide plate welding device

Abstract

The utility model relates to a small -size saw chain guide plate automatic welding device, set up in spot welder's work platform, include: two degrees of freedom fixed point frame for providing accurate positioning in left and right and front and back two directions, the effective work site of two degrees of freedom fixed point frame is rectangular frame body, the top of rectangular frame body is provided with a plurality of positioning clamping blocks, and positioning clamping block and rectangular frame body are detachably connected, and positioning clamping block and rectangular frame body clamping fixed saw chain guide plate positioning frame, the top of the midpoint of saw chain guide plate positioning frame is provided with vertical positioning column, and vertical positioning column is used for inserting the positioning hole on small -size saw chain guide plate to position small -size saw chain guide plate and be convenient for spot welding.

Description

Technical Field

[0001] This utility model relates to the field of saw chain guide plate assembly, specifically to a small automatic welding device for saw chain guide plates. Background Technology

[0002] With the advancement of technology, in addition to traditional chainsaws, lithium battery-powered hand saws are now widely used. These battery-powered chainsaws typically use guide plates only 4-6 inches in size. For this small size, the steel plate composite guide plates have more densely packed fixing points, whether riveted or welded. Manual fixing poses risks of instability or worker hand injury, thus requiring automated welding devices. Automated welding devices can also improve production efficiency. Summary of the Invention

[0003] This invention addresses the existing production method of small saw chain guide plates, which involves hand-feeding the plate into the processing equipment and manually positioning it to determine the processing location. This method may result in injury to the operator from the equipment and may also lead to inaccurate positioning. To solve these two problems, this invention provides an automatic welding device for small saw chain guide plates, which is installed on the working platform of a spot welding machine. The device includes a two-degree-of-freedom positioning frame for providing precise positioning in both left-right and front-back directions. The effective working part of the two-degree-of-freedom fixed-point frame is the rectangular frame; the top surface of the rectangular frame is provided with several positioning clamps, which are detachably connected to the rectangular frame, and the positioning clamps and the rectangular frame clamp and fix the saw chain guide plate positioning frame. A vertical positioning post is provided on the top surface of the saw chain guide plate positioning frame at the midpoint. The vertical positioning post is used to insert into the positioning hole on the small saw chain guide plate to position the small saw chain guide plate for easy spot welding.

[0004] Using the small saw chain guide plate automatic welding device of this utility model, the small saw chain guide plate is matched and placed into the vertical positioning column according to the position of its positioning hole by manual or robotic arm. Then, the welding work can be completed automatically by the two-degree-of-freedom fixed point frame and the spot welding machine.

[0005] Preferably, the height of the vertical positioning post is selected to be 4 times or more the thickness of the small saw chain guide plate to be welded.

[0006] Preferably, the vertical positioning post includes a rectangular hole provided on the main body, a positioning pin provided in the rectangular hole, and one end of the positioning pin is hinged to the vertical positioning post. A piston is installed inside the vertical positioning column. The piston works in conjunction with the positioning pin. Air is vented at the bottom of the vertical positioning column to control the piston.

[0007] When using the height-enhancing vertical positioning post solution, the friction between the vertical positioning post and the positioning hole of the small saw chain guide plate ensures the guide plate remains level during welding. Conversely, using a positioning pin solution limits the upper surface of the small saw chain guide plate to maintain levelness during welding.

[0008] As a preferred option, a two-degree-of-freedom fixed-point frame includes: The frame can be moved left and right and set on the work platform of the spot welding machine; The first slide rail group consists of two slide rails. The slide rail tracks are set on the work platform of the spot welding machine, and the sliders of the slide rails are set on the bottom surface of the left and right moving frame. The first slide rail group is parallel to the long side of the left and right moving frame. The forward / backward movement box is sized to match the left / right movement box and is positioned above the left / right movement box. The second slide rail group consists of two slide rails. The slide rail track is set on the upper surface of the left and right moving frame and is parallel to the short side of the left and right moving frame. The slide rail slider is set on the bottom surface of the front and back moving frame. A second drive device is also provided on the upper surface of the left-right moving frame, and the power output end of the second drive device is fixed to the frame of the front-back moving frame. A first drive device is installed below the work platform of the spot welding machine, and the power output end of the first drive device is fixed to the frame of the left and right moving frame.

[0009] Preferably, the first driving device and the second driving device both use the same driving device; the driving device includes: a pair of hinge seats, a lead screw is provided on the hinge seats, a lead screw block is sleeved on the lead screw, and the lead screw block serves as the power output end of the driving device; a servo motor is provided at one end of the lead screw, and the lead screw drives the servo motor; two limit microswitches are provided between the hinge seats, and the microswitches work in conjunction with the lead screw block.

[0010] The two-degree-of-freedom fixed-point frame primarily provides a mechanism that allows a saw chain guide plate (in this invention, a frame that moves forward and backward in the front and back directions) on the upper frame to slide horizontally, thus enabling welding of the saw chain guide plate without moving the spot welding machine. A servo motor precisely determines the rotation of the lead screw, which is then converted into a movement distance by a lead screw block. The lead screw block drives the frame to move via a connecting block fitted onto it. The only difference between the first and second drive devices is their size. Microswitches can be replaced with other triggers, such as proximity infrared transceivers, to ensure maximum travel and prevent control failure.

[0011] Preferably, the positioning clamp is located on the top surface of the forward and backward moving frame, along the long side of the frame. The saw chain guide positioning frame, viewed from above, is I-shaped, with steps at both ends, allowing the steps to simultaneously abut against the sides and bottom of the positioning clamp. The cooperation between the sides of the steps and the top surface of the middle section with the positioning clamp ensures the saw chain guide positioning frame remains stable during installation, reducing wobbling and achieving precise positioning.

[0012] The beneficial effects of this utility model are as follows: the vertical positioning column designed for the small size of the small saw chain guide plate can be conveniently positioned, and the two-degree-of-freedom fixed-point frame can automate the welding of the small saw chain guide plate, avoiding the unreliability of manual positioning and reducing the damage to workers caused by the equipment. Attached Figure Description

[0013] Figure 1 Assembly diagram of this utility model; In the diagram: a) Small saw chain guide plate; 1) Spot welding machine; 2) Forward and backward moving frame; 3) Left and right moving frame; 4) Positioning clamp; 5) Saw chain guide plate positioning frame; 6) Servo motor; 7) Second drive device; 8) Lead screw; 9) Right side slide rail; 10) Front side slide rail. Detailed Implementation

[0014] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example 1

[0015] like Figure 1 As shown, the small saw chain guide plate automatic welding device is set on the working platform of the spot welding machine 1, and includes: a two-degree-of-freedom fixed-point frame for providing precise positioning in both left and right and front and back directions; The effective working part of the two-degree-of-freedom fixed-point frame is the rectangular frame (in this embodiment, the forward and backward moving frame 2); the top surface of the rectangular frame is provided with several positioning clamps 4, the positioning clamps 4 are detachably connected to the rectangular frame, and the positioning clamps and the rectangular frame clamp and fix the saw chain guide plate positioning frame 5 (in this embodiment, there are only 2 working saw chain guide plate positioning frames 5). A vertical positioning post is provided on the top surface of the saw chain guide plate positioning frame 5 at the midpoint. The vertical positioning post is used to insert into the positioning hole on the small saw chain to position the small saw chain for easy spot welding.

[0016] Using the small saw chain guide plate automatic welding device of this utility model, the small saw chain guide plate is matched and placed into the vertical positioning column according to the position of its positioning hole by manual or robotic arm. Then, the welding work can be completed automatically by the two-degree-of-freedom fixed point frame and the spot welding machine.

[0017] The vertical positioning post includes a rectangular hole on the main body, a positioning pin is provided in the rectangular hole, and one end of the positioning pin is hinged to the vertical positioning post. A piston is installed inside the vertical positioning column. The piston works in conjunction with the positioning pin. Air is vented at the bottom of the vertical positioning column to control the piston.

[0018] When using the height-enhancing vertical positioning post solution, the friction between the vertical positioning post and the positioning hole of the small saw chain guide plate ensures that the small saw chain guide plate (a) remains horizontal during welding. In contrast, the positioning pin solution uses the positioning pin to limit the upper surface of the small saw chain guide plate, thus maintaining horizontality during welding.

[0019] A two-degree-of-freedom fixed-point frame includes: Move frame 3 left and right to set it on the spot welding machine's working platform; The first slide rail group consists of two slide rails. The slide rail tracks are set on the work platform of the spot welding machine, and the sliders of the slide rails are set on the bottom surface of the left and right moving frame. The first slide rail group is parallel to the long side of the left and right moving frame. Figure 1 The front slide rail 10 that appears in the middle belongs to the first slide rail group.

[0020] The front-to-back moving frame 2 is sized to match the left-to-right moving frame and is positioned above the left-to-right moving frame. The second slide rail group consists of two slide rails. The slide rail track is set on the upper surface of the left and right moving frame and is parallel to the short side of the left and right moving frame. The slide rail slider is set on the bottom surface of the front and back moving frame. Figure 1 The right-side slide rail 9 that appears in the middle belongs to the second slide rail group.

[0021] A second drive device is also provided on the upper surface of the left-right moving frame, and the power output end of the second drive device is fixed to the frame of the front-back moving frame. A first drive device is installed below the work platform of the spot welding machine, and the power output end of the first drive device is fixed to the frame of the left and right moving frame.

[0022] Both the first and second drive units use the same type of drive unit. by Figure 1 Taking the second drive device 7 as an example, the drive device includes: a pair of hinge seats, a lead screw 8 is provided on the hinge seats, a lead screw block is sleeved on the lead screw, and the lead screw block serves as the power output end of the drive device; a servo motor 6 is provided at one end of the lead screw, and the lead screw drives the servo motor; two limit microswitches are provided between the hinge seats, and the microswitches work in conjunction with the lead screw block.

[0023] The two-degree-of-freedom fixed-point frame primarily provides a mechanism that allows a saw chain guide plate (in this invention, a frame that moves forward and backward in the front and back directions) on the upper frame to slide horizontally, thus enabling welding of the saw chain guide plate without moving the spot welding machine. A servo motor precisely determines the rotation of the lead screw, which is then converted into a movement distance by a lead screw block. The lead screw block drives the frame to move via a connecting block fitted onto it. The only difference between the first and second drive devices is their size. Microswitches can be replaced with other triggers, such as proximity infrared transceivers, to ensure maximum travel and prevent control failure.

[0024] The positioning clamp is located on the top surface of the forward and backward moving frame, along its long side. The saw chain guide positioning frame, viewed from above, is I-shaped, with steps at both ends. These steps abut against both the sides and bottom of the positioning clamp. The sides of the steps and the top surface of the middle section engage with the positioning clamp, ensuring the saw chain guide positioning frame remains stable and reduces wobbling during installation, thus achieving precise positioning.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A small-scale automatic welding device for saw chain guide plates, installed on the working platform of a spot welding machine, characterized in that, include: A two-degree-of-freedom fixed-point frame is used to provide precise positioning in both left and right and front and back directions; The effective working part of the two-degree-of-freedom fixed-point frame is the rectangular frame; the top surface of the rectangular frame is provided with several positioning clamps, which are detachably connected to the rectangular frame, and the positioning clamps and the rectangular frame clamp and fix the saw chain guide plate positioning frame. A vertical positioning post is provided on the top surface of the saw chain guide plate positioning frame at the midpoint. The vertical positioning post is used to insert into the positioning hole on the small saw chain to position the small saw chain for easy spot welding.

2. The automatic welding device for small saw chain guide plates according to claim 1, characterized in that, The vertical positioning post includes a rectangular hole on the main body, a positioning pin is provided in the rectangular hole, and one end of the positioning pin is hinged to the vertical positioning post. A piston is installed inside the vertical positioning column. The piston works in conjunction with the positioning pin. Air is vented at the bottom of the vertical positioning column to control the piston.

3. The automatic welding device for small saw chain guide plates according to claim 1, characterized in that, A two-degree-of-freedom fixed-point frame includes: The frame can be moved left and right and set on the work platform of the spot welding machine; The first slide rail group consists of two slide rails. The slide rail tracks are set on the work platform of the spot welding machine, and the sliders of the slide rails are set on the bottom surface of the left and right moving frame. The first slide rail group is parallel to the long side of the left and right moving frame. The forward / backward movement box is sized to match the left / right movement box and is positioned above the left / right movement box. The second slide rail group consists of two slide rails. The slide rail track is set on the upper surface of the left and right moving frame and is parallel to the short side of the left and right moving frame. The slider of the slide rail is set on the bottom surface of the front and back moving frame. A second drive device is also provided on the upper surface of the left-right moving frame, and the power output end of the second drive device is fixed to the frame of the front-back moving frame. A first drive device is installed below the work platform of the spot welding machine, and the power output end of the first drive device is fixed to the frame of the left and right moving frame.

4. The automatic welding device for small saw chain guide plates according to claim 3, characterized in that, The first and second drive devices both use the same type of drive device; the drive device includes: a pair of hinge seats, a lead screw is provided on the hinge seats, a lead screw block is sleeved on the lead screw, and the lead screw block serves as the power output end of the drive device; a servo motor is provided at one end of the lead screw, and the lead screw drives the servo motor; two limit microswitches are provided between the hinge seats, and the microswitches work in conjunction with the lead screw block.

5. A small-scale automatic welding device for saw chain guides according to claim 3 or 4, characterized in that, The positioning clamp is set on the top surface of the front-to-back moving frame, along the long side of the front-to-back moving frame.

6. The automatic welding device for small saw chain guide plates according to claim 5, characterized in that, The saw chain guide positioning frame is shaped like an I-beam when viewed from above, with steps at both ends, so that the steps of the saw chain guide positioning frame simultaneously abut against the side and bottom of the positioning clamp block.

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