Miniature pressing mechanism

Abstract

The utility model belongs to the technical field of positioning jigs, and relates to a miniature pressing mechanism which comprises a base, an air cylinder, a driving block and a push rod, the base comprises a supporting plate, an air cylinder fixing plate and a pin pivoting part, the air cylinder fixing plate is vertically arranged on one side of the supporting plate in the X direction, and the pin pivoting part is in a U shape and is arranged on the other side of the supporting plate in the X direction; the air cylinder is fixed to the outer side of the air cylinder fixing plate and provided with an air cylinder shaft penetrating through the air cylinder fixing plate, the driving block is fixed to the tail end of the air cylinder shaft, the push rod comprises a pressing part and a driving part, the driving part is provided with an inclined kidney-shaped hole and a vertical kidney-shaped hole which penetrate in the Y direction, and the inclined kidney-shaped hole is closer to the pressing part than the vertical kidney-shaped hole. The end, close to the pressing part, of the inclined kidney-shaped hole is lower than the other end of the inclined kidney-shaped hole, the vertical kidney-shaped hole and the driving block are connected through a first pin in the Y direction, and the inclined kidney-shaped hole and the pin pivoting part are connected through a connecting piece in the Y direction. According to the mechanism, the push rod can be pressed in a small space with a very small movement range by utilizing a simple structure, so that a positioning effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a micro-pressing mechanism. Background Art

[0002] If the inspection speed is slowed down during the IGBT product inspection process and the product is not pressed tightly, the product may deviate, which will affect the product inspection results. In serious cases, the product may even deviate from the inspection range, thus affecting the overall production efficiency of the production line.

[0003] Chinese patent CN212420436U discloses a longitudinal clamping mechanism, which generates clamping force on the clamped object by driving the clamping wall through a driving unit, and the driving unit is generally an axially vertical cylinder. However, the problem here is that the position of the cylinder occupies a large height, and the minimum height of the space in the above test is only 30mm, which is not enough to set the cylinder.

[0004] Therefore, it is necessary to provide a compacting mechanism with a small volume to solve the above problems. Summary of the invention

[0005] The main purpose of the utility model is to provide a miniature pressing mechanism with a compact structure, which can realize pressing in an extremely low space.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a micro-clamping mechanism, including a base, a cylinder and a driving block, and a push rod, the base including an integrally formed support plate, a cylinder fixing plate and a pin pivot portion, the cylinder fixing plate is vertically arranged on one side of the support plate in the X direction, the pin pivot portion is U-shaped and is arranged on the other side of the support plate in the X direction; the cylinder is fixed to the outer side of the cylinder fixing plate and has a cylinder shaft passing through the cylinder fixing plate, the driving block is fixed to the end of the cylinder shaft, the push rod includes a pressing part and a driving part, the driving part is provided with an oblique waist hole and a vertical waist hole passing through along the Y direction, the oblique waist hole is closer to the pressing part than the vertical waist hole, the height of the oblique waist hole close to one end of the pressing part is lower than the other end, the vertical waist hole and the driving block are connected by a first pin passing through along the Y direction, and the oblique waist hole and the pin pivot portion are connected by a connecting member passing through along the Y direction.

[0007] Specifically, a plurality of silicone pressure heads are provided below the pressing portion.

[0008] Specifically, the slope of the oblique waist hole is 1 / n, where n>1.

[0009] Specifically, the connecting members are a second pin and a third pin.

[0010] The beneficial effects of the technical solution of the utility model are:

[0011] The mechanism can utilize a simple structure to allow the push rod to achieve compression in a small space with a very small movement range, thereby playing a positioning role. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional diagram of a micro-pressing mechanism of an embodiment;

[0013] Figure 2 A three-dimensional diagram of a putter.

[0014] The numbers in the figure represent:

[0015] 1-base, 11-support plate, 12-cylinder fixing plate, 13-pin pivot joint;

[0016] 2- Cylinder,

[0017] 3- Driver block,

[0018] 4-push rod, 41-pressing part, 42-driving part, 421-oblique waist hole, 422-vertical waist hole;

[0019] 5a-first pin, 5b-second pin, 5c-third pin;

[0020] 6-Silicone indenter. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with specific embodiments.

[0022] Example:

[0023] like Figure 1 As shown, a micro-pressing mechanism of the utility model comprises a base 1, a cylinder 2, a driving block 3, a push rod 4 and three pins (a first pin 5a, a second pin 5b, and a third pin 5c).

[0024] like Figure 1 As shown, the base 1 includes an integrally formed support plate 11, a cylinder fixing plate 12 and a pin pivoting portion 13, wherein the cylinder fixing plate 12 is vertically arranged on one side of the support plate 11 in the X direction, and the pin pivoting portion 13 is U-shaped and arranged on the other side of the support plate 11 in the X direction. The cylinder 2 is fixed to the outer side of the cylinder fixing plate 12 and has a cylinder shaft passing through the cylinder fixing plate 12, and the driving block 3 is fixed to the end of the cylinder shaft.

[0025] The cylinder 2 is relatively fixed to the cylinder fixing plate 12, and the cylinder shaft can only drive the driving block 3 to move along the X direction. The pin pivoting portion 13 is used as a connecting portion of the push rod 4, so that the push rod 4 is hung on the pin pivoting portion 13 by the second pin 5b and the third pin 5c.

[0026] like Figure 1 and Figure 2 As shown, the push rod 4 includes a pressing portion 41 and a driving portion 42. A plurality of silicone pressure heads 6 are provided below the pressing portion 41. The driving portion 42 is provided with an oblique waist hole 421 and a vertical waist hole 422 that penetrate along the Y direction. The oblique waist hole 421 is closer to the pressing portion 41 than the vertical waist hole 422. The height of the oblique waist hole 421 near one end of the pressing portion 41 is lower than the other end. The vertical waist hole 422 is connected to the driving block 3 by the first pin 5a passing through it along the Y direction. The oblique waist hole 421 is connected to the pin pivot portion 13 by a connecting member passing through it along the Y direction. The connecting members are the second pin 5a and the third pin 5c.

[0027] When the cylinder 2 drives the driving block 3 to extend along the X direction, the push rod 4 will move forward, but because it is restricted by the second pin 5a and the third pin 5c, the push rod 4 will gradually move downward, thereby using the silicone pressure head 6 on the lower surface of the pressing part 41 to press the clamped object. If the slope of the oblique waist hole 421 is 1 / n, n>1, then the cylinder 2 pushes out a distance of m, and the descending height of the push rod 4 is m / n, so this setting method has the effect of reducing the pressing stroke, which is conducive to reducing the clamping force. The silicone pressure head 6 is elastic, so it can further reduce the clamping force by increasing the force-bearing area to protect the surface of the clamped object. The second pin 5a and the third pin 5c are connecting parts with circular cross-sections. If only one is used, the push rod 4 will have a larger rotation range, so two pins are used here to limit the oblique waist hole 421, so that the clamping is not easy to loosen. The pin can also be replaced by a square or rectangular cross-section connecting block whose width matches the width of the oblique waist hole 421.

[0028] The mechanism can utilize a simple structure to allow the push rod to achieve compression in a small space with a very small movement range, thereby playing a positioning role.

[0029] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A micro-pressing mechanism, characterized in that: The cam is fixed on the upper side of the support frame, and the cam is fixed on the lower side of the support frame, and the cam is fixed on the upper side of the support frame.

2. The micro-pressing mechanism according to claim 1, characterized in that: A plurality of silicone pressure heads are provided below the pressing portion.

3. The micro-pressing mechanism according to claim 1, characterized in that: The slope of the oblique waist hole is 1 / n, where n>1.

4. The micro-pressing mechanism according to claim 1, characterized in that: The connecting members are a second pin and a third pin.

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