A saw chain guide plate processing apparatus

Abstract

The application discloses a saw chain guide plate processing equipment, including resistance welding machine, the resistance welding machine is equipped with positioning device for positioning guide plate and clamping device for clamping guide plate, clamping device includes pressing head and support, the pressing head is arranged on the support, and the support is provided with a support head. The application provides a saw chain guide plate processing equipment, which can weld while pressing the guide plate to be welded, thereby reducing the generation of welding deformation, without generating excess welding marks, improving the welding quality, and directly performing annular welding, without needing to perform W-shaped symmetric jumper welding, and improving the welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of chainsaw guide plate processing technology, and in particular to a processing equipment for chainsaw guide plates. Background Technology

[0002] As a core transmission component of a chainsaw, the structural integrity and connection strength of the chain guide plate directly determine the chainsaw's cutting efficiency, service life, and operational safety. In the manufacturing process of the chain guide plate, the left and right side plates and the middle connecting plate are typically produced using a resistance welding machine, such as the one with publication number CN205798678U.

[0003] However, in the resistance welding process of saw chain guides, sufficient clamping force is applied to the welding point to ensure that the contact surface is tightly fitted and the current is concentrated and conducted. However, due to the current conduction characteristics of resistance welding, if clamping force is applied to areas other than the welding point at the same time, the clamping position will become an additional path for current conduction, causing the current to be diverted to the non-welding area. This results in the base material or coating in that area being mistakenly welded, forming excess weld beads, base material burn-out, or component deformation, which seriously damages the structural accuracy and surface quality of the saw chain guide.

[0004] Currently, to alleviate the above problems, the industry mostly adopts an auxiliary method of "step-by-step welding + manual correction": that is, after each weld point is completed, the equipment operation is paused, and the deformed parts of the guide plate are corrected manually with the help of fixtures before welding the next weld point. However, this method not only reduces processing efficiency by more than 30%, making it unable to meet the needs of mass production, but also the accuracy of manual correction depends on the operator's experience, which is prone to correction deviations and makes it difficult to ensure the consistency of product quality; at the same time, repeated manual intervention also increases production costs and operational safety risks. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a processing device for saw chain guide plates. This application achieves this by separating and pressing the guide plate from the welding point during welding, thereby ensuring compression while preventing the creation of a current path that would lead to pressure welding.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a processing equipment for saw chain guide plates, comprising a resistance welding machine, wherein the resistance welding machine is equipped with a positioning device for positioning the guide plate and a clamping device for clamping the guide plate. The clamping device includes a pressing head and a support member. The pressing head is disposed on the support member, and the support member is provided with a support head. The support head can extend into the middle groove of the guide plate, and the support head is an insulating member. The pressing head includes a first pressing member and a second pressing member. The first pressing member is used to press the side plate of the guide plate against the support head when no welding is performed at this position. The second pressing member is used to limit the position after welding at this position to prevent deformation and to prevent vertical clamping of the guide plate.

[0007] Its beneficial effect is that, by separating and clamping the plates of the other welding points while welding one welding point, the circuit of the welding point is disconnected at the same time as clamping, so as to avoid the generation of extra pressure welding marks between the welding point and the other points due to compression, and the welding can be carried out at the same time as compression, thereby reducing the generation of welding deformation.

[0008] In the above scheme, preferably, multiple clamping devices are configured and arranged at the welding point. The clamping device also includes a telescopic component, which is used to drive the support component into or out of the groove of the guide plate. The support component is equipped with a clamping head at both the top and bottom to clamp the guide plate synchronously from top to bottom.

[0009] In the above scheme, preferably, the upper and lower end faces of the support head are provided with lifting plates. When the lifting plates are extended, the relative distance between the upper and lower lifting plates is greater than or equal to the height of the groove in the middle of the guide plate. When the lifting plates are retracted, the relative distance between the upper and lower lifting plates is less than the height of the groove in the middle of the guide plate.

[0010] In the above scheme, preferably, the resistance welding machine includes a welding head arranged at the top and bottom, the welding head's contact end face is provided as an annular welding ring, thereby forming an annular welding ring during welding, and the inner diameter of the annular welding ring is larger than the diameter of the support member.

[0011] In the above scheme, preferably, when the second clamping member contacts the surface of the guide plate, its extension stroke reaches its maximum, and under the action of the upper and lower second clamping members, the guide plate is limited to the upper and lower positions.

[0012] In the above scheme, preferably, the resistance welding machine is further equipped with a coordinate device, which includes an X-axis moving plate and a Y-axis moving plate. The Y-axis moving plate is guided and slidably disposed on the X-axis moving plate by a guide rail, and the Y-axis moving plate is guided and slidably disposed on the resistance welding machine by a guide rail. The X-axis moving plate and the Y-axis moving plate are driven to move on the guide rail by a driving device. The positioning device and the clamping device are disposed on the X-axis moving plate. The movement of the coordinate device drives the guide plate to move, so that pressure welding operations are performed at different positions.

[0013] In the above scheme, preferably, the clamping device presses against the welding point of the guide plate. When the coordinate device starts to move, the telescopic part of the clamping device that has started to enter below the welding head retracts, while the telescopic part at the welding point extends out, controlling the extension of the second clamping part to limit the guide plate.

[0014] In the above scheme, preferably, the first clamping member, the second clamping member, and the lifting plate are all pneumatic components. Initially, the first clamping member and the lifting plate are ventilated. After welding is completed at this welding point, the second clamping member is ventilated. The ventilation of all three is carried out after the telescopic member is fully extended.

[0015] In the above scheme, preferably, when the lifting plate extends, the relative distance between the upper and lower lifting plates is 0.1-0.5mm greater than the height of the groove in the middle of the guide plate.

[0016] In the above scheme, preferably, for each welding point moved by the coordinate device, the central control unit controls the first clamping member at the unwelded point to increase the pressure by a set value.

[0017] The beneficial effects of the present invention are as follows: The present invention provides a processing equipment for saw chain guide plates, which can perform welding while pressing the guide plate to be welded, thereby reducing the generation of welding deformation and avoiding the generation of excess welding marks, thus improving the welding quality. In addition, the present invention can directly perform ring welding without the need for W-shaped symmetrical jumper welding, thereby improving welding efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 This is a front view of the present invention.

[0020] Figure 3 This is a schematic diagram of the clamping device and coordinate device of the present invention.

[0021] Figure 4 This is a top view of the clamping device and coordinate device of the present invention.

[0022] Figure 5 This is a cross-sectional view of the clamping device of the present invention.

[0023] Figure 6 This is a partially enlarged view of the clamped state of the unwelded points of the present invention.

[0024] Figure 7 This is a partially enlarged view of the clamped position at the welded point of the present invention.

[0025] Figure 8 This is a schematic diagram of the guide plate of the present invention.

[0026] Figure 9 This is a partially enlarged view of the welding point lifting plate of the present invention. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0028] Example 1:

[0029] See Figures 1-9 A saw chain guide plate processing equipment includes a resistance welding machine 1, wherein the resistance welding machine 1 is equipped with a positioning device 2 for positioning the guide plate, a clamping device 3 for clamping the guide plate, and a coordinate device 4 for adjusting the welding point position.

[0030] The coordinate device 4 includes an X-axis moving plate 41 and a Y-axis moving plate 42. The Y-axis moving plate 42 is guided and slidably mounted on the frame of the resistance welding 1 via a guide rail and a slider, allowing the Y-axis moving plate 42 to move left and right. A drive device is also mounted on the Y-axis moving plate 42, which is connected to a lead screw and a lead sleeve. A servo motor is connected to the lead screw, and the servo motor precisely controls the left and right movement of the Y-axis moving plate 42. Similarly, the X-axis moving plate 41 is also guided and slidably mounted on the Y-axis moving plate 42 via a guide rail and a slider. A drive device is also mounted on the X-axis moving plate 41, and the servo motor precisely controls the forward and backward movement of the X-axis moving plate 41. The positioning device 2 and the clamping device 3 are both mounted on the X-axis moving plate 41. A central control unit is also mounted on the motor welding 1, which controls the precise movement of the coordinate device 4.

[0031] The guide plate 5 to be welded includes an upper side plate 51, a lower side plate 52, and a middle plate 53. Each of the three plates has a positioning hole 511 and an adjustment groove 512. The positioning device 2 includes a first support plate 21 and a second support plate 22. Both the first support plate 21 and the second support plate 22 are equipped with positioning shafts 211. The operator or robot aligns the positioning holes 511 and adjustment grooves 512 on the lower side plate 52, the middle plate 53, and the upper side plate 51 with the positioning shafts 211 on the first support plate 21 and the second support plate 22 and places them in sequence. All three part plates are positioned by two positioning shafts 211.

[0032] The guide plate 5 is provided with multiple welding points. After the guide plate 5 is positioned on the positioning device 2, the central control unit controls the coordinate device 4 to move so that different positions on the guide plate 5 are aligned with the welding head on the resistance welding 1. The pressure welding head includes an upper pressure welding head 11 and a lower pressure welding head 12. The upper end face of the lower pressure welding head 12 is flush with the first support plate 21 and the second support plate 22. Therefore, after the lower side plate 31 is positioned on the positioning device 2, it contacts the lower pressure welding head 12. The upper pressure welding head 11 moves up and down by a cylinder. When it moves down, it presses against the upper end face of the upper side plate 51, and then cooperates with the lower pressure welding head 12 to press the three-layer plate at this position. After the circuit is connected, the pressure welding is completed at the pressed position. The upper pressure welding head 11 and the lower pressure welding head 12 are provided with annular pressure welding rings, which form annular weld marks on the guide plate 5.

[0033] The X-axis moving plate 41 is equipped with multiple clamping devices 3, and each clamping device 3 clamps at a welding point on the guide plate 5. The number of clamping devices 3 corresponds to the number of welding points on the guide plate 5. Each clamping device 3 includes a clamping head 31, a support member 32, and a telescopic member 33. The telescopic member 33 is mounted on the X-axis moving plate 41. The support member 32 is bolted to the front end of the telescopic rod of the telescopic member 33, and the clamping head 31 is mounted on the support member 32. When the telescopic member 33 extends forward, it moves the clamping head 31 and the support member 32 to the guide plate 5. The intermediate plate 53 has a side-opening slot 531 at each welding point, and the front end of the support member 32 is equipped with a support head 321. When the telescopic member 33 extends forward, the support head 321 extends into the slot 531. The support head 321 is located at the center of the welding point. Lifting plates 322 are provided on both the upper and lower end faces of the support head 321. The lifting plates 322 can be pneumatically, hydraulically, or electromagnetically controlled to move up and down. When the upper and lower lifting plates 322 are fully extended, the distance between the end faces of the upper and lower lifting plates 322 is greater than the thickness of the middle plate 53, and is 0.1-0.3mm greater than the thickness of the middle plate 53. The 0.1-0.3mm gap does not affect the flatness of the entire guide plate 5. Therefore, when the upper and lower lifting plates 322 are extended, the lower side plate 52, the middle plate 53, and the upper side plate 51 at this position are supported by the support head 321 with a gap, and cannot be pressed together.

[0034] The support member 32 is provided with a clamping head 31 on both its upper and lower end faces. The clamping head 31 includes a first clamping member 311 and a second clamping member 312. Both the first clamping member 311 and the second clamping member 312 are pneumatic clamping members. The clamping stroke of the first clamping member 311 is greater than that of the second clamping member 312. When the upper and lower second clamping members 312 extend at the same time, the distance between the end faces of the two second clamping members 312 is consistent with the thickness of the guide plate 5 welded together. At the same time, the end face of the lower second clamping member 312 is flush with the first support plate 21 and the second support plate 22. Therefore, when the upper and lower second clamping members 312 extend, they only limit the upper and lower position of the welding point at this position without clamping. When the first clamping member 311 extends, it clamps the guide plate at this position.

[0035] The second clamping member 312 is an annular clamping member, and the first clamping member 311 is located inside the annular inner ring of the second clamping member 312. At the same time, the diameter of the first clamping member 311 is less than or equal to the diameter of the support head 321, and the first clamping member 311 and the lifting plate 322 on the support head 321 extend or retract synchronously.

[0036] In the initial state, the operator or robot places the guide plate 5 to be welded on the positioning device 2. At this time, the central control unit controls the extension of the telescopic parts 33 of all clamping devices 3 to extend, so that the support head 321 is inserted into the slot 531 of the intermediate plate 53. When the telescopic parts 33 are fully extended, the front end of the support head 321 is just on the inner wall of the slot 531. After the telescopic parts 33 are fully extended, the central control unit controls the first pressing part 311 and the lifting plate 322 to extend. The upper lifting plate 322 cooperates with the upper first pressing part 311 to press the upper side plate 51, and the lower lifting plate 322 cooperates with the lower first pressing part 311 to press the lower side plate 52. Thus, the intermediate plate 53 of the welding point is not pressed against the lower side plate 52 and the upper side plate 51.

[0037] At this time, the central control unit controls the coordinate device 4 to move, so that a welding point of the guide plate 5 is aligned with the pressure welding head. While the coordinate device 4 moves, the central control unit controls the clamping device 3 of the welding point that is about to enter the welding position to unlock. That is, first control the first clamping member 311 and the lifting plate 322 to retract synchronously. After retraction, the telescopic member 33 starts to retract. At the same time, the telescopic member 33 has completed retraction before entering the welding position at this welding point, to prevent the clamping device 3 from contacting the pressure welding head.

[0038] Once in position, the upper pressure welding head 11 descends and cooperates with the lower pressure welding head 12 to press the three-layer board at this location. After the circuit is connected, pressure welding is completed at the pressed position. After pressure welding is completed, the upper pressure welding head 11 resets, and the coordinate device 4 starts to move again, causing the second welding point on the guide plate 5 to enter the welding position. The clamping device 3 at the welding point unlocks and retracts, while the clamping device 3 at the welding completion point extends. After the telescopic member 33 is fully extended, the lifting plate 322 no longer extends, and at the same time, the second clamping member 312 extends to limit the position of the welding completion point. In this way, pressure welding is completed at the welding points on the guide plate 5.

[0039] Its working principle or usage method is as follows:

[0040] In the initial state, the operator or robot places the guide plate 5 to be welded on the positioning device 2. At this time, the central control unit controls the extension of the telescopic parts 33 of all clamping devices 3 to extend, so that the support head 321 is inserted into the slot 531 of the intermediate plate 53. After the telescopic parts 33 are fully extended, the central control unit controls the first pressing part 311 and the lifting plate 322 to extend. The upper lifting plate 322 cooperates with the upper first pressing part 311 to press the upper side plate 51, and the lower lifting plate 322 cooperates with the lower first pressing part 311 to press the lower side plate 52. Thus, the intermediate plate 53 of the welding point is not pressed against the lower side plate 52 and the upper side plate 51.

[0041] The central control unit controls the coordinate device 4 to move, so that the welding point of the guide plate 5 enters the welding position. At the same time, the central control unit controls the clamping device 3 of the welding point that is about to enter the welding position to unlock. The upper pressure welding head 11 descends and cooperates with the lower pressure welding head 12 to press the three-layer board at this position. After the circuit is connected, the pressure welding is completed at the pressed position.

[0042] After the pressure welding is completed, the upper pressure welding head 11 is reset, and the coordinate device 4 starts to move again, so that the second welding point on the guide plate 5 enters the welding position. The clamping device 3 at the welding point is unlocked and retracted, while the clamping device 3 at the welding completion point extends. At this time, the lifting plate 322 no longer extends, and the second clamping member 312 extends to limit the position of the welding completion point. In this way, the pressure welding of the welding points on the guide plate 5 is completed.

[0043] Example 2:

[0044] See Figures 1-9This embodiment makes the following further improvements based on embodiment 1: The movement of the welding points in this application is a U-shaped sequential ring welding, that is, the welding of one side is completed before the welding of the other side is carried out. At the point where they are welded together, welding deformation will occur due to welding, and it is limited by the upper and lower limits. Therefore, the deformation force will be transmitted to the unwelded point, which will cause the unwelded part to shift or tilt upward or downward. Therefore, after the resistance welding machine 1 completes welding of each welding point, the clamping device 3 of the unwelded point increases the clamping force on the upper side plate 51 and the lower side plate 52 by a set value to prevent deformation or positional shift.

[0045] The unwelded points are prevented from being pressed together by the lifting plate 322 on the support head 321. The circuit at these welding points is disconnected, and there is no relative clamping force, so pressure welding will not occur, i.e. no excess weld beads will be formed. At the same time, this application can directly perform ring welding without the need for W-shaped symmetrical jumper welding, which improves welding efficiency.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A processing device for saw chain guide plates, characterized in that: The device includes a resistance welding machine (1), which is equipped with a positioning device (2) for positioning a guide plate and a clamping device (3) for clamping the guide plate. The clamping device (3) includes a clamping head (31) and a support member (32). The clamping head (31) is disposed on the support member (32). The support member (32) is provided with a support head (321). The support head (321) can extend into the middle groove of the guide plate. The support head (321) is an insulating member. The clamping head (31) includes a first clamping member (311) and a second clamping member (312). The first clamping member (311) is used to press the side plate of the guide plate onto the support head (321) when no welding is performed at this position. The second clamping member (312) is used to limit this position after welding at this position to prevent deformation and not to press the guide plate up and down. The clamping device (3) is configured in multiple ways and is configured on the welding point. The clamping device (3) also includes a telescopic member (33). The telescopic member (33) is used to drive the support member (32) into or out of the groove of the guide plate. The support member (32) is equipped with a pressing head (31) on both the top and bottom to clamp the guide plate synchronously from top to bottom. The support head (321) is provided with lifting plates (322) on its upper and lower end faces. When the lifting plates (322) are extended, the relative distance between the upper and lower lifting plates (322) is greater than or equal to the height of the groove in the middle of the guide plate. When the lifting plates (322) are retracted, the relative distance between the upper and lower lifting plates (322) is less than the height of the groove in the middle of the guide plate.

2. The processing equipment for a saw chain guide plate according to claim 1, characterized in that: The resistance welding machine (1) includes a welding head arranged at the top and bottom. The welding head has a ring-shaped welding ring on its contact end face, which forms a ring-shaped welding ring during welding. The inner diameter of the ring-shaped welding ring is larger than the diameter of the support member (32).

3. The processing equipment for a saw chain guide plate according to claim 2, characterized in that: When the second clamping member (312) contacts the surface of the guide plate, its extension stroke reaches its maximum, and under the action of the upper and lower second clamping members (312), the guide plate is limited to the upper and lower positions.

4. The processing equipment for a saw chain guide plate according to claim 2, characterized in that: The resistance welding machine (1) is also equipped with a coordinate device (4), which includes an X-axis moving plate (41) and a Y-axis moving plate (42). The Y-axis moving plate (42) is guided and slidably disposed on the X-axis moving plate (41) by a guide rail. The Y-axis moving plate (42) is guided and slidably disposed on the resistance welding machine (1) by a guide rail. The X-axis moving plate (41) and the Y-axis moving plate (42) are driven to move on the guide rail by a driving device. The positioning device (2) and the clamping device (3) are disposed on the X-axis moving plate (41). The movement of the coordinate device (4) drives the guide plate to move, so that pressure welding operations are performed at different positions.

5. The processing equipment for a saw chain guide plate according to claim 4, characterized in that: The clamping device (3) presses against the welding point of the guide plate. When the coordinate device (4) starts to move, the telescopic part (33) of the clamping device (3) below the welding head retracts, while the telescopic part (33) at the welding point extends out, controlling the second clamping part (312) to extend out and limit the guide plate.

6. The processing equipment for a saw chain guide plate according to claim 1, characterized in that: The first clamping member (311), the second clamping member (312) and the lifting plate (322) are all pneumatic components. Initially, the first clamping member (311) and the lifting plate (322) are ventilated. After welding at this welding point is completed, the second clamping member (312) is ventilated. The ventilation of all three is carried out after the telescopic member (33) is fully extended.

7. The processing equipment for a saw chain guide plate according to claim 1, characterized in that: When the lifting plate (322) extends, the relative distance between the upper and lower lifting plates (322) is 0.1-0.5mm greater than the height of the groove in the middle of the guide plate.

8. The processing equipment for a saw chain guide plate according to claim 4, characterized in that: For each welding point moved by the coordinate device (4), the central control unit controls the first clamping member (311) at the unwelded point to increase by a set pressure value.

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