Self-balancing jig and ultrasonic equipment

Abstract

The utility model provides a self-balancing jig and ultrasonic equipment, and belongs to the technical field of ultrasonic equipment, the self-balancing jig comprises a bottom plate, a self-balancing block is arranged on the bottom plate; the template is connected with the self-balancing block and forms a self-balancing structure capable of swinging around the self-balancing block as a fulcrum, and at least two first contact surfaces with arc-shaped cross sections are arranged on the side surface of the template; the locking mechanism comprises a driving element and at least two clamping blocks, the clamping blocks and the first contact surfaces are arranged in a one-to-one correspondence mode, the clamping blocks are provided with second contact surfaces consistent with the first contact surfaces in outline shape, and the clamping blocks are connected with the driving element; the driving element can drive the clamping block to move to a clamping position or a loosening position; the device has the advantages that when the welding head presses a workpiece, the template eliminates the horizontal difference between the end face of the workpiece and the welding head through self-adaptive swing, and the template can be automatically locked after self-adaptive adjustment so as to limit swing of the template.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic equipment, and relates to a self-balancing jig and an ultrasonic equipment. Background Technique

[0002] An ultrasonic equipment refers to an equipment that uses ultrasonic waves to process or treat workpieces. The ultrasonic equipment includes, but is not limited to, an ultrasonic welding equipment or an ultrasonic cutting equipment. The ultrasonic welding equipment can use the high-frequency vibration generated by ultrasonic waves to weld plastics or metals. For example, two plastic parts are pressed together and welded. The ultrasonic cutting equipment can use the high-frequency vibration generated by ultrasonic waves to cut a part of plastics or metals. For example, the sprue (gate) of a plastic part is cut.

[0003] When the ultrasonic equipment processes a workpiece, the workpiece needs to be placed on the template of the workbench jig first, and then the machine head descends and contacts and presses the workpiece on the mold base. The welding head on the machine head processes the workpiece through ultrasonic waves. Currently, there is a Chinese invention patent with an application number of 202110021701.3, named a self-balancing jig and an ultrasonic equipment using the same. When processing each workpiece, the self-balancing jig automatically adjusts the workpiece, so that the welding head and the workpiece are automatically leveled, ensuring that the pressure at each position between the welding head and the workpiece is the same.

[0004] The above self-balancing jig can achieve self-balancing adjustment during the processing of each workpiece. However, it is found in actual use that since the jig realizes tilting and floating through a sphere or a cylinder and cannot be fixed after automatic leveling, there is still room for improvement. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a self-balancing jig and an ultrasonic equipment for the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions: A self-balancing jig includes:

[0007] A bottom plate, on which a self-balancing block is provided;

[0008] A template, which is arranged corresponding to the bottom plate up and down and there is a gap between the two. The template is connected to the self-balancing block and forms a self-balancing structure that can swing around the self-balancing block as a fulcrum. At least two first contact surfaces with a circular arc cross-section are arranged on the side surface of the template;

[0009] A locking mechanism, the locking mechanism includes a driving element and at least two clamping blocks, each of the clamping blocks is arranged corresponding to each of the first contact surfaces, and the clamping block is provided with a second contact surface having the same contour shape as the first contact surface, each of the clamping blocks is connected to the driving element, and the driving element can drive the clamping block to move to a clamping position or a release position;

[0010] When the clamping block moves to the clamping position, each of the clamping blocks clamps the template, the first contact surface and the second contact surface are in surface-to-surface contact and limit the swinging of the template;

[0011] When the clamping block moves to the release position, each of the clamping blocks releases the template, the first contact surface and the second contact surface are separated and the template is allowed to swing.

[0012] Preferably, the self-balancing block is a sphere or a cylinder.

[0013] Preferably, limiting grooves are provided on the upper surface of the bottom plate and the lower surface of the template, the two limiting grooves are arranged corresponding to each other up and down, and the upper and lower parts of the self-balancing block are respectively located in the two limiting grooves.

[0014] Preferably, the circular arc-shaped contour of the first contact surface in the thickness direction of the template takes the swing fulcrum of the template as the center.

[0015] Preferably, the number of the first contact surfaces is two and they are located on opposite sides of the template.

[0016] Preferably, the driving element is a double-headed air cylinder, the double-headed air cylinder is fixedly connected to the bottom plate, the number of the clamping blocks is two and they are respectively close to opposite sides of the template, and the two clamping blocks are respectively connected to the two piston rods of the double-headed air cylinder.

[0017] Preferably, the driving element includes two air cylinders, the two air cylinders are fixedly connected to the bottom plate, the number of the clamping blocks is two and they are respectively close to opposite sides of the template, and the two clamping blocks are respectively connected to the piston rods of the two air cylinders.

[0018] Preferably, the driving element is a linear driving motor or an electric cylinder or a linear slide table.

[0019] There is also provided an ultrasonic device, including: the self-balancing jig as described above, and further including a liftable machine head, the machine head is provided with a welding head, and the welding head is arranged corresponding to the template up and down.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] 1. When the welding head presses against the workpiece, the template eliminates the horizontal difference between the end face of the workpiece and the welding head through adaptive swinging. After the adaptive adjustment, the template can be automatically locked to limit its swinging.

[0022] 2. The circular arc contour of the first contact surface in the thickness direction of the template is centered on the swinging fulcrum of the template. Therefore, no matter how the template rotates, the first contact surface is on the arc track, and the second contact surface can closely fit with the first contact surface when the clamping block clamps the template.

[0023] 3. In the initial state, each clamping block is in the released position, and the template can swing freely. When the plastic workpiece is placed on the template, the machine head descends to make each welding head press against the workpiece. After the workpiece is pressed, the template is leveled by the self-balancing block to eliminate the horizontal difference between the workpiece and each welding head, so that the pressure of each welding head pressing on the upper end face of the workpiece is consistent. Then, the driving element drives each clamping block to move to the clamping position and automatically clamp the template to prevent the template from moving randomly during processing and affecting the processing effect. After processing, the workpiece is taken out, the driving element drives each clamping block to move to the released position and release the template, and the next workpiece is processed by repeating the above steps. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the self-balancing jig of the present invention.

[0025] Figure 2 It is a schematic diagram of the use state of the self-balancing jig of the present invention.

[0026] Figure 3 It is a schematic diagram of the connection relationship between the clamping block and the template of the present invention.

[0027] Figure 4 It is an exploded view of the structure of the template and the bottom plate of the present invention.

[0028] In the figure, 100, bottom plate; 200, self-balancing block; 300, template; 310, first contact surface; 400, driving element; 500, clamping block; 510, second contact surface; 600, limiting groove. Detailed Embodiment

[0029] The following are specific embodiments of the present invention in combination with the drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0030] Such as Figures 1-4As shown in the figure, a self-balancing jig includes: a bottom plate 100, a template 300, and a locking mechanism. A self-balancing block 200 is provided on the bottom plate 100. The template 300 is arranged corresponding to the bottom plate 100 up and down with a gap therebetween. The template 300 is connected to the self-balancing block 200 to form a self-balancing structure that can swing around the self-balancing block 200 as a fulcrum.

[0031] Preferably, the self-balancing block 200 is a sphere or a cylinder. Limiting grooves 600 are provided on the upper surface of the bottom plate 100 and the lower surface of the template 300. The two limiting grooves 600 are arranged corresponding to each other up and down. The upper and lower parts of the self-balancing block 200 are respectively located in the two limiting grooves 600.

[0032] The limiting groove 600 is a groove or a through-hole structure, which can accommodate the self-balancing block 200 and limit it to prevent the self-balancing block 200 from moving around.

[0033] It should be added that the self-balancing structure means that the template 300 can swing and level according to the horizontal difference between the upper end surface of the workpiece and each welding head when the workpiece is pressed. Through this structure, the horizontal difference between the upper end surface of the workpiece and each welding head can be eliminated, so that the pressure of each welding head on the workpiece is consistent.

[0034] At least two first contact surfaces 310 with circular arc cross-sections are provided on the side surface of the template 300. The locking mechanism includes a driving element 400 and at least two clamping blocks 500. Each clamping block 500 is arranged corresponding to each first contact surface 310, and the clamping block 500 is provided with a second contact surface 510 having the same contour shape as the first contact surface 310. Each clamping block 500 is connected to the driving element 400, and the driving element 400 can drive the clamping block 500 to move to the clamping position or the release position. When the clamping block 500 moves to the clamping position, each clamping block 500 clamps the template 300, the first contact surface 310 and the second contact surface 510 are in surface contact and limit the swinging of the template 300. When the clamping block 500 moves to the release position, each clamping block 500 releases the template 300, the first contact surface 310 and the second contact surface 510 are separated and the template 300 is allowed to swing.

[0035] The self-balancing (adaptive) principle of the self-balancing jig is as follows: During each processing, the workpiece is placed on the template 300 or in the mold on the template 300. When the workpiece is pressed (for example, when the welding head presses on the workpiece), the template 300 swings around the self-balancing block 200 for leveling. This enables each workpiece to be leveled automatically without manual adjustment during processing, reducing the leveling difficulty. Moreover, the process of leveling the workpiece is completely automatic, and the pressure of each welding head on the workpiece is consistent, improving the welding accuracy and effect.

[0036] When each welding head is pressed on the workpiece and the template 300 achieves self-balancing by swinging, in order to limit the degree of freedom of the template 300, it is also necessary to lock the template 300 through a locking mechanism to prevent the template 300 from moving around.

[0037] The working principle of the locking mechanism is as follows: the driving element 400 can drive the clamping block 500 to move, so that the driving block clamps or releases the template 300, and the template 300 can swing when it is released; when the template 300 is clamped, the first contact surface 310 contacts the second contact surface 510, and the friction force generated by the surface-to-surface contact locks the template 300 so that the template 300 cannot rotate. Since the first contact surface 310 is an arc surface, and the second contact surface 510 is also an arc surface, the second contact surface 510 can contact the first contact surface 310 surface-to-surface when the template 300 swings to any angle, so that the clamping block 500 can clamp the template 300 that swings to any angle.

[0038] When the welding head presses the workpiece, the template 300 eliminates the horizontal difference between the end face of the workpiece and the welding head through adaptive swinging. The template 300 can be automatically locked after adaptive adjustment to limit the swing of the template 300. The biggest advantage of the self-balancing fixture is that it can automatically level and lock each workpiece or different types of workpieces during processing. The whole process does not require manual participation, which is very convenient, so that each workpiece can be targeted for self-balancing adjustment.

[0039] Preferably, the arc-shaped profile of the first contact surface 310 in the thickness direction of the template 300 takes the swing fulcrum of the template 300 as the center. Therefore, no matter how the template 300 rotates, the first contact surface 310 is on the arc track, and the second contact surface 510 can fit tightly with the first contact surface 310 when the clamping block 500 clamps the template 300.

[0040] It should be noted here that the shape of the template 300 can be rectangular, circular, triangular, polygonal or irregular.

[0041] like Figures 1-4 As shown, when the shape of the template 300 is rectangular or circular, the number of the first contact surfaces 310 is two and they are located on opposite sides of the template 300. In this way, the template 300 can be clamped better, so that the template 300 is evenly stressed and not easily moved.

[0042] It should be added that the number of the first contact surfaces 310 is not limited to two, and the protection range also includes a plurality of first contact surfaces 310. When the number of the first contact surfaces 310 is multiple, the multiple first contact surfaces 310 can be distributed in pairs on opposite sides, and the multiple clamping blocks 500 can better clamp the template 300.

[0043] In one embodiment, the driving element 400 is a double-headed cylinder, which is fixedly connected to the bottom plate 100. The number of clamping blocks 500 is two and they are respectively close to the opposite sides of the template 300. The two clamping blocks 500 are respectively connected to the two piston rods of the double-headed cylinder. A double-headed cylinder is a cylinder with two piston rods. The two piston rods can move in opposite directions to drive the two clamping blocks 500 to move to the clamping position or the releasing position. When the two piston rods of the double-headed cylinder retract, the two clamping blocks 500 move towards the two first contact surfaces 310 (i.e., the opposite sides of the template 300) and finally clamp the template 300. When the two piston rods of the double-headed cylinder extend, the two clamping blocks 500 release the template 300.

[0044] In another embodiment, the driving element 400 includes two cylinders, which are fixedly connected to the bottom plate 100. The number of clamping blocks 500 is two and they are respectively close to the opposite sides of the template 300. The two clamping blocks 500 are respectively connected to the piston rods of the two cylinders. The two cylinders can push the two clamping blocks 500 to move towards the two first contact surfaces 310 respectively to clamp the template 300, or pull the two clamping blocks 500 to release the template 300.

[0045] It should be noted that when the number of clamping blocks 500 is multiple, the driving element 400 includes multiple cylinders. The cylinders are arranged in one-to-one correspondence with the clamping blocks 500, and the clamping blocks 500 are driven to move by the multiple cylinders to clamp or release the template 300. That is, the way that multiple cylinders respectively drive multiple clamping blocks 500 to move is also within the protection scope of this solution.

[0046] In addition to the above two ways, the driving element 400 can preferably be a linear drive motor or an electric cylinder or a linear slide. In short, the driving element 400 only needs to be able to drive the clamping block 500 to move.

[0047] An ultrasonic device is also proposed, including: a self-balancing jig, and further including a liftable machine head (not shown in the figure). The machine head is provided with a welding head (not shown in the figure), and the welding head is arranged corresponding to the template 300 up and down.

[0048] The ultrasonic device can be an ultrasonic welding device or an ultrasonic cutting device. The bottom plate 100 is the workbench of the ultrasonic device or is fixedly connected to the workbench. In the initial state, each clamping block 500 is in the released position, and the template 300 can swing freely. When a plastic workpiece is placed on the template 300, the machine head descends and presses each welding head against the workpiece. After the workpiece is pressed, the template 300 is leveled through the self-balancing block 200 to eliminate the horizontal difference between the workpiece and each welding head, so that the pressure of each welding head pressing on the upper end face of the workpiece is consistent. Then, the driving element 400 drives each clamping block 500 to move to the clamping position and automatically clamp the template 300 to prevent the template 300 from moving randomly during processing and affecting the processing effect. After the processing is completed, the workpiece is taken out, the driving element 400 drives each clamping block 500 to move to the released position and release the template 300, and the next workpiece is processed by repeating the above steps.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, in the present invention, descriptions such as "first", "second", and "one" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0053] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A self-balancing fixture, characterized in that: include: A bottom plate (100), wherein a self-balancing block (200) is arranged on the bottom plate (100); A template (300), the template (300) and the bottom plate (100) are arranged correspondingly up and down with a gap therebetween, the template (300) is connected to the self-balancing block (200) to form a self-balancing structure that can swing around the self-balancing block (200) as a fulcrum, and the side surface of the template (300) is provided with at least two first contact surfaces (310) with arc-shaped cross sections; A locking mechanism, the locking mechanism comprising a driving element (400) and at least two clamping blocks (500), each of the clamping blocks (500) being arranged in one-to-one correspondence with each of the first contact surfaces (310), and each of the clamping blocks (500) being provided with a second contact surface (510) having a contour shape consistent with that of the first contact surface (310), each of the clamping blocks (500) being connected to the driving element (400), and the driving element (400) being capable of driving the clamping blocks (500) to move to a clamping position or a releasing position; When the clamping blocks (500) move to the clamping position, each of the clamping blocks (500) clamps the template (300), the first contact surface (310) and the second contact surface (510) are in surface contact and restrict the template (300) from swinging; When the clamping blocks (500) move to the release position, each of the clamping blocks (500) releases the template (300), the first contact surface (310) is separated from the second contact surface (510), and the template (300) is allowed to swing.

2. A self-balancing fixture as claimed in claim 1, characterized in that: The self-balancing block (200) is a sphere or a cylinder.

3. A self-balancing fixture as claimed in claim 2, characterized in that: The upper surface of the base plate (100) and the lower surface of the template (300) are both provided with limiting grooves (600), the two limiting grooves (600) are arranged correspondingly up and down, and the upper part and the lower part of the self-balancing block (200) are respectively located in the two limiting grooves (600).

4. A self-balancing fixture as claimed in claim 1, characterized in that: The arc-shaped contour of the first contact surface (310) in the thickness direction of the template (300) takes the swing fulcrum of the template (300) as the center of the circle.

5. A self-balancing fixture as claimed in claim 1 or 4, characterized in that: The number of the first contact surfaces (310) is two and they are located on two opposite sides of the template (300).

6. A self-balancing fixture as claimed in claim 5, characterized in that: The driving element (400) is a double-headed cylinder, which is fixedly connected to the base plate (100). There are two clamping blocks (500) which are respectively close to the opposite sides of the template (300). The two clamping blocks (500) are respectively connected to the two piston rods of the double-headed cylinder.

7. A self-balancing fixture as claimed in claim 5, characterized in that: The driving element (400) comprises two cylinders, the two cylinders are fixedly connected to the base plate (100), the number of the clamping blocks (500) is two and they are respectively close to the opposite sides of the template (300), and the two clamping blocks (500) are respectively connected to the piston rods of the two cylinders.

8. A self-balancing fixture as claimed in claim 1 or 4, characterized in that: The driving element (400) is a linear driving motor or an electric cylinder or a linear slide.

9. An ultrasonic device, characterized in that: include: The self-balancing jig according to any one of claims 1 to 8 further comprises a liftable machine head, wherein the machine head is provided with a welding head, and the welding head is arranged correspondingly to the template (300) up and down.

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