An adjustable welding positioning fixture

Abstract

The utility model belongs to the positioning frock field discloses a kind of adjustable welding positioning frock, this scheme is changed by the setting of detachable cushion block, so that the device can be adapted to the size model change caused by the change of the height of workpiece support base height by changing the height of cushion block, so that the workpiece of different height size can still be clamped and positioned by this positioning frock, and by being fixed on the bottom plate with the second vertical board, and the first vertical board is fixed on the workbench, and then the spacing between the first vertical board and the second vertical board can also be controlled by movable bottom plate to adapt to different width, while the setting of third vertical board and fourth vertical board can adapt to the length of workpiece, and then the device can position and clamp the workpiece of different model size under the same design template, and the use range is wider.

Description

Technical Field

[0001] This utility model belongs to the field of positioning tooling technology, specifically relating to an adjustable welding positioning tooling. Background Technology

[0002] Positioning fixtures, also known as positioning jigs, are used because some workpieces have complex overall structures and are difficult to form in one piece. Therefore, they are usually processed into sections. After each section is processed, it is clamped and positioned by positioning fixtures, and the sections are connected by welding to produce a complete workpiece.

[0003] The existing support frame (workpiece) for automotive battery packs not only involves supporting and protecting the battery pack, but also requires holes for circuit wiring and a limiting structure for the battery pack. As a result, the structure of the support frame is usually quite complex and difficult to form in one piece (but the structure is symmetrical or similar about the middle). It is usually cut into two plates in the middle, processed and manufactured separately, and then connected and assembled by welding.

[0004] Existing support frame tooling fixtures are usually custom-made and only applicable to one type of support frame. However, for support frames with the same design template, the differences in shape and structure between different models are small, only varying in the location or shape of the holes and the height of the support frame's support base (better material selection requires less height, and the support base can provide the corresponding strength). The location or shape of the holes has little impact on the clamping and positioning of the positioning fixture. Different support frame support base heights may make it difficult to clamp the positioning fixture. Designing a separate positioning fixture is costly, and existing positioning fixtures cannot meet the requirements for adapting to changes in size. Utility Model Content

[0005] The present invention aims to provide an adjustable welding positioning fixture, which can be adapted to clamp support frames with different heights of support foundations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable welding positioning fixture, comprising... The workbench has a base plate that slides on top, and a pad can be detachably installed on the top of the base plate. The limiting assembly includes a rocker arm, a drive rod, a drive cylinder, a pin, a first vertical plate and a second vertical plate respectively disposed on the left and right sides of the pad block, and a third vertical plate and a fourth vertical plate respectively disposed on the front and rear sides of the pad block. The rocker arm is rotatably mounted on the worktable, the second vertical plate is fixed on the base plate, and the fourth vertical plate is slidably inserted into the worktable. One end of the drive rod is rotatably connected to the second vertical plate, and the other end of the drive rod is rotatably connected to the rocker arm. The drive cylinder is mounted on the bottom of the worktable, and the movable end of the drive cylinder is connected to the lower end of the fourth vertical plate. A pin hole is provided on the worktable, and the pin is slidably inserted into the base plate, with its end extending into the pin hole. A positioning mechanism is used to position a workpiece.

[0007] The principle and effects of this technical solution: 1. By using detachable pads, the device can adapt to changes in the height of the workpiece support base to accommodate variations in size and dimensions. This allows workpieces of different heights and dimensions to be clamped and positioned using the positioning fixture. Furthermore, by fixing the second vertical plate to the base plate and the first vertical plate to the worktable, the distance between the first and second vertical plates can be controlled by the movable base plate to accommodate different widths. Additionally, the third and fourth vertical plates can adapt to the length of the workpiece. As a result, the device can position and clamp workpieces of different sizes and dimensions under the same design template, thus broadening its application range.

[0008] 2. Since the base plate can only slide horizontally along the worktable, and the second vertical plate is fixed to the base plate, while the rocker arm can only rotate along the rotating end, the rocker arm, the drive rod, and the second vertical plate form a crank-slider structure. By rotating the rocker arm, the drive rod can be driven to slide the second vertical plate horizontally, thereby changing the position of the second vertical plate and the base plate relative to the first vertical plate, thus achieving the effect of width adjustment to adapt to the support base of the workpiece. Furthermore, the base plate is connected and positioned to the worktable through the pin and pin hole, which ensures that the second vertical plate remains stable during use, and the fit between the pin hole and the pin is highly accurate.

[0009] 3. The fourth vertical plate is driven to slide horizontally by the driving cylinder, so that the position of the fourth vertical plate can be adjusted according to the length of the workpiece to adapt to slight changes in length, thus improving its applicability.

[0010] The present invention is further configured to include a control component, which includes a control cylinder and a connecting rod. The worktable has a movable groove, and a movable plate is movably disposed on the worktable. The movable plate is located on the side of the pad block away from the second vertical plate. The control cylinder is fixed to the bottom surface of the worktable. One end of the connecting rod is connected to the movable end of the control cylinder, and the other end of the connecting rod passes through the movable groove and is connected to the movable plate. The positioning mechanism is disposed on the left and right sides of the pad block, with one side installed on the movable plate and the other side installed on the worktable.

[0011] The principle and effect of this technical solution: By controlling the extension and retraction of the cylinder's movable end, the connecting rod is driven to slide, so that the connecting rod can move in the movable groove and move the movable plate closer to or away from the pad block. That is, it drives the positioning mechanism located on the movable plate closer to or away from the pad block, so as to achieve the effect of making way for the workpiece or clamping it.

[0012] The present invention is further configured such that: the control component also includes a guide rod, a guide frame, and a guide rail; the guide rod is rotatably mounted on the worktable; the guide frame is rotatably mounted on the movable plate; the end of the guide frame is rotatably connected to the guide rod; the guide rail is fixed on the worktable; and the movable plate is slidably mounted on the guide rail.

[0013] The principle and effect of this technical solution: By setting up the guide rod and guide frame, a crank-slider structure is formed between the guide rod, guide frame and movable plate. The sliding of the movable plate can change the included angle between the guide frame and the guide rod, as well as the distance between their lower ends. Through oblique traction and pressure, the movable plate cannot be separated from the guide rail, thus achieving a certain vertical limiting effect and guiding effect on the movable plate. With the guidance of the guide rail, the stability is higher.

[0014] The present invention is further configured such that: the control component also includes a mounting bracket, an auxiliary cylinder and a connector; both the front and rear ends of the movable plate have protrusions; the left and right sides of the protrusions are respectively provided with mounting brackets connected to the worktable; the mounting brackets are equipped with auxiliary cylinders; the movable end of the auxiliary cylinder is fixed with a connector; and the side wall of the protrusions has clearance holes adapted to the connector.

[0015] The principle and effect of this technical solution: By using an auxiliary cylinder to move the connector closer to or away from the protrusion, the protrusion can be made to slide along the slide rail by the pressure of the connector, thereby achieving the effect of auxiliary braking. At the same time, the position of the connector can also limit the movement of the protrusion, thereby limiting the stroke of the movable plate.

[0016] The present invention is further configured such that: the positioning mechanism includes a first clamping plate, a second clamping plate and a horizontal cylinder, the first clamping plate is fixed on the movable plate and has a positioning pin on the side of the first clamping plate near the pad, the horizontal cylinder is fixed on the worktable, the second clamping plate is installed on the movable end of the horizontal cylinder and is located on the side of the pad away from the first clamping plate.

[0017] The principle and effect of this technical solution: By installing the first clamping plate on the movable plate, the movement of the movable plate can drive the first clamping plate to move closer to or away from the workpiece's support base. The positioning pin can position and guide the positioning hole of the workpiece base. The second clamping plate can also move horizontally on the worktable through the setting of the horizontal cylinder. Thus, the first clamping plate and the second clamping plate can clamp or move the workpiece horizontally by moving horizontally.

[0018] The present invention is further configured such that: the positioning mechanism includes a vertical cylinder, a vertical plate, a transmission plate, a first pressure plate and a second pressure plate; the vertical cylinder, the vertical plate and the transmission plate are respectively set on both sides of the pad; the transmission plate is rotatably mounted on the vertical plate, and one end of the transmission plate is connected to the movable end of the vertical cylinder; the first pressure plate and the second pressure plate are respectively mounted on the ends of the two transmission plates away from the vertical cylinder; the vertical cylinder and the vertical plate on one side are fixed on the movable plate; the vertical cylinder on the other side is fixed to the bottom of the worktable; and the transmission plate is fixed to the top of the worktable.

[0019] The principle and effect of this technical solution are as follows: By mounting a vertical cylinder and upright plate on one side of the movable plate, the vertical cylinder and upright plate on that side can move as a whole with the movable plate. This eliminates the need for a large range of motion in the transmission plate mounted on the movable plate. A small rotation of the transmission plate, combined with the horizontal movement of the movable plate, is sufficient to allow the first or second pressure plate mounted on that side to move aside for workpiece installation or removal. Furthermore, the vertical cylinder mounted at the bottom of the worktable has a larger range of motion without occupying worktable space, allowing the transmission plate on that side to drive the first or second pressure plate to rotate at a larger angle to allow for workpiece installation, removal, or placement on the pad or base plate. The rotation also allows the bottom of the first or second pressure plate to press against the surface of the workpiece, thus limiting the vertical movement of the workpiece.

[0020] The present invention is further configured such that: pressure heads are detachably installed at the front and rear ends of the bottom of the first pressure plate.

[0021] The principle and effect of this technical solution: By setting two detachable pressure heads, the first pressure plate and the pressure head as a whole can be adapted to the shape of the workpiece without having to press as a whole. The detachable setting means that if the commonly used pressing parts are damaged, only that part can be replaced, resulting in lower cost. Furthermore, the pressure head can be replaced with the corresponding model according to the shape of the workpiece, which is more flexible. Attached Figure Description

[0022] Figure 1 This is an axonometric structural diagram of the present invention; Figure 2 for Figure 1 A magnified view of a portion of the first pressure plate. Figure 3 for Figure 1 Enlarged view of the second pressure plate in the middle; Figure 4 for Figure 1 Enlarged view of the workpiece in the middle; Figure 5 for Figure 4 Diagram of the back structure; Figure 6 for Figure 1 A diagram of the structure viewed from below; Figure 7 for Figure 1 Top view of the structure; Figure 8 This is a side view of the present invention. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 110. Workpiece; 111. Frame side plate; 112. Frame foundation; 210. Workbench; 211. Movable slot; 220. Base plate; 230. Pad block; 310. Joystick; 320. Drive lever; 330. Pin; 340. Drive cylinder; 350. First vertical plate; 360. Second vertical plate; 370. Third vertical plate; 380. Fourth vertical plate; 410. Control cylinder; 420. Connecting rod; 430. Movable plate; 431. Protrusion; 440. Guide rod; 450. Guide frame; 460. Guide rail; 470. Mounting bracket; 480. Auxiliary cylinder; 490. Connector; 510. First clamping plate; 511. Locating pin; 520. Second clamping plate; 530. Horizontal cylinder; 610. Vertical cylinder; 620. Vertical plate; 630. Transmission plate; 640. First pressure plate; 641. Pressure head; 650. Second pressure plate.

[0024] Example: As attached Figure 1-8 As shown, this utility model discloses an adjustable welding positioning fixture for positioning and clamping the internal support frame of a battery pack (described in this solution as workpiece 110). Workpiece 110 includes two sets of frame side plates 111 and two frame bases 112, with a frame upright plate 620 fixed on the frame base 112. The positioning fixture clamps and positions the two frame side plates 111 and the frame bases 112 so that they abut against each other for welding connection. This solution includes a worktable 210, a limit assembly, a positioning mechanism, and a control assembly. A base plate 220 is slidably mounted on the center of the top of the worktable 210. A pad 230 is detachably mounted on the top of the base plate 220. The height of the pad 230 is adjusted according to the height of the frame base 112 of workpiece 110 so that different types of frame side plates 111 can be clamped and positioned by the positioning mechanism.

[0025] The limiting assembly includes a rocker arm 310, a drive rod 320, a drive cylinder 340, a pin 330, a first vertical plate 350 and a second vertical plate 360 ​​respectively disposed on the left and right sides of the pad 230, and a third vertical plate 370 and a fourth vertical plate 380 respectively disposed on the front and rear sides of the pad 230. Multiple first vertical plates 350 and second vertical plates 360 are spaced apart along the front-rear direction of the worktable 210. The rocker arm 310 is rotatably mounted on the worktable 210, the second vertical plate 360 ​​is fixed to the base plate 220, and the fourth vertical plate 380 is slidably inserted into the worktable 210. One end of the drive rod 320 is rotatably connected to the second vertical plate 360, and the other end is rotatably connected to the rocker arm 310. In this design, the rocker arm 310 and the drive rod 320 are arranged as a set, and two sets are used as an example, as shown in the attached figure. Figure 3 As shown, the drive cylinder 340 is installed at the bottom of the worktable 210, and the movable end of the drive cylinder 340 is connected to the lower end of the fourth vertical plate 380. Multiple pin holes (not marked in the figure) are spaced apart on the worktable 210 along the movable direction of the base plate 220. The position of the pin holes is determined according to the actual workpiece 110 model to ensure positioning accuracy. The pin 330 is slidably inserted into the base plate 220, and its end can extend into the pin hole. Through the connection between the pin 330, the pin hole, and the base plate 220, the sliding of the base plate 220 relative to the worktable 210 can be limited, so that the base plate 220 and the second vertical plate 360 ​​can maintain a stable position during welding. The number of rocker arms 310 is less than the number of second vertical plates 360. The control assembly includes a control cylinder 410 and a connecting rod 420. The worktable 210 has a movable groove 211. A movable plate 430 is movably mounted on the worktable 210. The movable plate 430 is located on the side of the pad 230 away from the second vertical plate 360. The control cylinder 410 is fixed to the bottom surface of the worktable 210. One end of the connecting rod 420 is connected to the movable end of the control cylinder 410. The other end of the connecting rod 420 passes through the movable groove 211 and is connected to the movable plate 430. The positioning mechanism is located on the left and right sides of the pad 230, with one side installed on the movable plate 430 and the other side installed on the worktable 210.

[0026] The control assembly also includes a guide rod 440, a guide frame 450, and a guide rail 460. The guide rod 440 is rotatably mounted on the worktable 210, the guide frame 450 is rotatably mounted on the movable plate 430, the end of the guide frame 450 is rotatably connected to the guide rod 440, the guide rail 460 is fixed on the worktable 210, and the movable plate 430 is slidably mounted on the guide rail 460.

[0027] The control assembly also includes a mounting bracket 470, an auxiliary cylinder 480, and a connector 490. The front and rear ends of the movable plate 430 have protrusions 431. The left and right sides of the protrusions 431 are respectively provided with mounting brackets 470 connected to the worktable 210. The auxiliary cylinder 480 is mounted on the mounting bracket 470. The movable end of the auxiliary cylinder 480 is fixed with a connector 490. The side wall of the protrusion 431 has a clearance hole that matches the connector 490.

[0028] The positioning mechanism includes a first clamping plate 510, a second clamping plate 520, and a horizontal cylinder 530. The first clamping plate 510 is fixed on the movable plate 430, and the side of the first clamping plate 510 near the pad 230 has a positioning pin 511. The horizontal cylinder 530 is fixed on the worktable 210. The second clamping plate 520 is installed on the movable end of the horizontal cylinder 530, and the second clamping plate 520 is located on the side of the pad 230 away from the first clamping plate 510.

[0029] The positioning mechanism also includes a vertical cylinder 610, a vertical plate 620, a transmission plate 630, a first pressure plate 640, and a second pressure plate 650. The vertical cylinder 610, the vertical plate 620, and the transmission plate 630 are respectively set on both sides of the pad block 230. The transmission plate 630 is rotatably mounted on the vertical plate 620, and one end of the transmission plate 630 is connected to the movable end of the vertical cylinder 610. The first pressure plate 640 and the second pressure plate 650 are respectively installed on the two transmission plates 630 away from the vertical cylinder 610. The vertical cylinder 610 and the vertical plate 620 on one side are fixed on the movable plate 430, and the vertical cylinder 610 on the other side is fixed to the bottom of the worktable 210, and the transmission plate 630 is fixed to the top of the worktable 210. The front and rear ends of the bottom of the first pressure plate 640 are respectively detachably mounted with pressure heads 641. In this design, three sets of spaced vertical cylinders 610, upright plates 620, and transmission plates 630 are installed on the movable plate 430, and a first pressure plate 640 is installed at the end of each transmission plate 630 on this side. Three sets of spaced cylinders, upright plates 620, and transmission plates 630 are installed on the worktable 210, and a second pressure plate 650 is installed at the end of the transmission plate 630 on this side.

[0030] Among them, the drive cylinder 340, control cylinder 410, auxiliary cylinder 480, horizontal cylinder 530 and vertical cylinder 610 are all cylinders. Their models are selected according to the usage requirements. Their working principles are common knowledge in this field and will only be briefly described here. The working principles between each component have been fully explained. The details can be adjusted according to the actual size, model and other factors selected during implementation.

[0031] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0032] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.

[0033] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An adjustable welding positioning fixture, characterized in that: include The workbench (210) has a base plate (220) slidably mounted on its top, and a pad (230) is detachably mounted on the top of the base plate (220). The limiting assembly includes a rocker arm (310), a drive rod (320), a drive cylinder (340), a pin (330), a first vertical plate (350) and a second vertical plate (360) respectively disposed on the left and right sides of the pad (230), and also includes a third vertical plate (370) and a fourth vertical plate (380) respectively disposed on the front and rear sides of the pad (230). The rocker arm (310) is rotatably mounted on the worktable (210), the second vertical plate (360) is fixed on the base plate (220), and the fourth vertical plate (380) slides. The drive rod (320) is inserted into the worktable (210). One end of the drive rod (320) is rotatably connected to the second vertical plate (360), and the other end of the drive rod is rotatably connected to the rocker arm (310). The drive cylinder (340) is installed at the bottom of the worktable (210), and the movable end of the drive cylinder (340) is connected to the lower end of the fourth vertical plate (380). The worktable (210) has a pin hole, and the pin (330) is slidably inserted into the base plate (220), and its end can extend into the pin hole. A positioning mechanism is used to position the workpiece (110).

2. The adjustable welding positioning fixture as described in claim 1, characterized in that: It also includes a control component, which includes a control cylinder (410) and a connecting rod (420). The worktable (210) has a movable slot (211). A movable plate (430) is movably disposed on the worktable (210). The movable plate (430) is located on the side of the pad (230) away from the second vertical plate (360). The control cylinder (410) is fixed to the bottom surface of the worktable (210). One end of the connecting rod (420) is connected to the movable end of the control cylinder (410). The other end of the connecting rod (420) passes through the movable slot (211) and is connected to the movable plate (430). The positioning mechanism is disposed on the left and right sides of the pad (230), with one side installed on the movable plate (430) and the other side installed on the worktable (210).

3. The adjustable welding positioning fixture as described in claim 2, characterized in that: The control assembly further includes a guide rod (440), a guide frame (450), and a guide rail (460). The guide rod (440) is rotatably mounted on the worktable (210), the guide frame (450) is rotatably mounted on the movable plate (430), the end of the guide frame (450) is rotatably connected to the guide rod (440), the guide rail (460) is fixed on the worktable (210), and the movable plate (430) is slidably mounted on the guide rail (460).

4. The adjustable welding positioning fixture as described in claim 3, characterized in that: The control assembly also includes a mounting bracket (470), an auxiliary cylinder (480), and a connector (490). The movable plate (430) has protrusions (431) at both the front and rear ends. The left and right sides of the protrusions (431) are respectively provided with the mounting bracket (470) connected to the worktable (210). The auxiliary cylinder (480) is mounted on the mounting bracket (470). The connector (490) is fixed to the movable end of the auxiliary cylinder (480). The side wall of the protrusion (431) has a clearance hole that is adapted to the connector (490).

5. An adjustable welding positioning fixture as described in claim 2, characterized in that: The positioning mechanism includes a first clamping plate (510), a second clamping plate (520), and a horizontal cylinder (530). The first clamping plate (510) is fixed on the movable plate (430), and the first clamping plate (510) has a positioning pin (511) on the side of the pad (230) near the pad. The horizontal cylinder (530) is fixed on the worktable (210). The second clamping plate (520) is installed on the movable end of the horizontal cylinder (530), and the second clamping plate (520) is located on the side of the pad (230) away from the first clamping plate (510).

6. The adjustable welding positioning fixture as described in claim 5, characterized in that: The positioning mechanism further includes a vertical cylinder (610), a vertical plate (620), a transmission plate (630), a first pressure plate (640), and a second pressure plate (650). The vertical cylinder (610), the vertical plate (620), and the transmission plate (630) are respectively set on both sides of the pad (230). The transmission plate (630) is rotatably mounted on the vertical plate (620), and one end of the transmission plate (630) is connected to the movable end of the vertical cylinder (610). The first pressure plate (640) and the second pressure plate (650) are respectively installed on the two transmission plates (630) at the ends away from the vertical cylinder (610). The vertical cylinder (610) and the upright plate (620) on one side are fixed on the movable plate (430), the vertical cylinder (610) on the other side is fixed to the bottom of the worktable (210), and the transmission plate (630) is fixed to the top of the worktable (210).

7. The adjustable welding positioning fixture as described in claim 6, characterized in that: The first pressure plate (640) has pressure heads (641) detachably installed at its front and rear ends.

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