CN217035300U

CN217035300U - Center positioning mechanism

Info

Publication number: CN217035300U
Application number: CN202123416755.4U
Authority: CN
Inventors: 郝振兴
Original assignee: Suzhou Aibuna Precision Machinery Co ltd
Current assignee: Suzhou Aibuna Precision Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-22
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a center positioning mechanism. The technical scheme is as follows: the utility model provides a center positioning mechanism, the on-line screen storage device comprises a base, a cover plate, the guide rail, the supporting shoe, eccentric link mechanism and cylinder, upper surface at the base is equipped with first line rail connecting block A, second line rail connecting block A, first line rail connecting block B, second line rail connecting block B, third line rail connecting block B and fourth line rail connecting block B, first line rail connecting block A, second line rail connecting block B, third line rail connecting block B all is connected with the cylinder through spacing sheet metal component, eccentric link mechanism sets up the center at the base upper surface, first line rail connecting block A, second line rail connecting block A, first line rail connecting block B, second line rail connecting block B, be linked together through eccentric link mechanism between third line rail connecting block B and the fourth line rail connecting block B. The utility model has the advantages that: the repeated positioning precision is high, the positioning effect is good, and the processing quality of products can be ensured.

Description

Center positioning mechanism

Technical Field

The utility model relates to a positioning device for machining, in particular to a central positioning mechanism.

Background

With the development of science and technology, the development of the times and the requirements of people on various electronic products are continuously improved, and the chip resistor with reliable performance and stable process also shows a diversified development trend according to the characteristic requirements of the electronic products. Dividing the wafer resistance according to different process characteristics, wherein the wafer resistance is divided into: thick film chip resistors and thin film chip resistors, for example, thick film chip resistors are manufactured by masking conductor paste and resistor paste on an insulating board by screen printing, making corresponding patterns and finally heating, and thin film chip resistors are manufactured by using manufacturing technologies such as evaporation and sputtering, which are different in nature. In the actual operation process, due to the requirements of the wafer resistor processing technology, accurate and rapid center positioning of the substrate of the wafer resistor is very important, and the currently used positioning structure has the defects of large volume, complex structure, high cost, low positioning precision and short service life, and can not meet the use requirements more and more. Therefore, a new technical solution should be provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a center positioning mechanism with reasonable structure, good use effect and high positioning precision aiming at the problems in the prior art.

In order to realize the purpose, the utility model adopts the technical scheme that:

a central positioning mechanism comprises a base, a cover plate, a guide rail, a supporting block, an eccentric connecting rod mechanism and an air cylinder, wherein a first line rail connecting block A and a second line rail connecting block A are symmetrically arranged on the left side and the right side of the upper surface of the base, a first line rail connecting block B and a second line rail connecting block B are arranged on the front side of the upper surface of the base in parallel, a third line rail connecting block B and a fourth line rail connecting block B are arranged on the rear side of the upper surface of the base in parallel, the first line rail connecting block A, the second line rail connecting block A, the first line rail connecting block B, the second line rail connecting block B, the third line rail connecting block B and the fourth line rail connecting block B are arranged on the guide rail in a sliding mode, the second line rail connecting block A, the first line rail connecting block B and the fourth line rail connecting block B are connected with the air cylinder through limiting sheet metal parts, the eccentric connecting rod mechanism is arranged in the center of the upper surface of the base, all be equipped with the product mounting on first line rail connecting block A, second line rail connecting block A, first line rail connecting block B, second line rail connecting block B, third line rail connecting block B and the fourth line rail connecting block B, be linked together through eccentric link mechanism between first line rail connecting block A, second line rail connecting block A, first line rail connecting block B, second line rail connecting block B, third line rail connecting block B and the fourth line rail connecting block B, four angles of apron are passed through the connecting piece installation and are fixed on the supporting shoe, the lower terminal surface installation of supporting shoe is fixed on the base.

The further technical scheme is as follows:

eccentric link mechanism is including setting up at the rotatory piece A at base center, four swivelling joint piece A, two swivelling joint piece B and two rotatory piece B, swivelling joint piece B is passed through at rotatory piece A's both ends and is connected with first line rail connecting block A, second line rail connecting block A respectively, swivelling joint piece B still is connected with rotatory piece B respectively, every be equipped with two swivelling joint piece A on the rotatory piece B respectively, four swivelling joint piece A's the other end is connected with first line rail connecting block B, second line rail connecting block B, third line rail connecting block B, fourth line rail connecting block B respectively.

The further technical scheme is as follows:

the product fixing piece A is arranged on the first line rail connecting block B, the second line rail connecting block B, the third line rail connecting block B and the fourth line rail connecting block B respectively and comprises a bearing, a bearing block A and a bearing positioning pin, and the bearing is fixed on the bearing block A by the bearing positioning pin.

The product fixing piece B is arranged on the first line rail connecting block A and the second line rail connecting block A respectively, the product fixing piece B comprises a bearing, a bearing fixing shaft and a bearing fixing shaft, the bearing fixing shaft is arranged on the first line rail connecting block A and the second line rail connecting block A, the bearing fixing shaft is arranged on the bearing fixing shaft, and the bearing fixing shaft is arranged on the bearing fixing shaft.

The upper surface of the cover plate is uniformly distributed with a plurality of vacuum suction holes at intervals, and the side surface of the cover plate is provided with a vacuum pumping nozzle.

Preferably, the following components:

every one side of spacing sheet metal component is equipped with elasticity respectively and draws the piece, elasticity draws the one end and the spacing sheet metal component of piece to be connected, and elasticity draws the other end and the fixed column of setting on the base of piece to be connected.

Compared with the prior art, the center positioning mechanism provided by the utility model has the following technical effects:

1. the center positioning mechanism is used for positioning the wafer resistor substrate during wafer resistor processing, and has the advantages of compact structure, low failure rate and low use cost.

2. According to the central positioning mechanism, the eccentric connecting rod mechanism is arranged to connect the plurality of line rail connecting blocks, so that the plurality of line rail connecting blocks and the plurality of bearings arranged on the line rail connecting blocks can synchronously act, the plurality of line rail connecting blocks drive the product fixing piece above the line rail connecting blocks to simultaneously move towards the central direction, a product is positioned, the repeated positioning precision is high, the positioning effect is good, and the processing quality of the product can be ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the chip resistor substrate of FIG. 1 with the chip resistor substrate removed;

FIG. 3 is a schematic view of the structure of FIG. 1 with the cover plate removed;

fig. 4 is a rear view structural diagram of fig. 1.

Fig. 5 is a schematic structural view of a product fastener a according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a product fixing member B according to an embodiment of the present invention.

The device comprises a base, a cover plate, a guide rail, a support block, a cylinder, a first line rail connecting block A, a second line rail connecting block A, 8, a first line rail connecting block B, a support block, 5, a cylinder, 6, a first line rail connecting block A, 7, a second line rail connecting block A, 8, a first line rail connecting block B, 9, a second line rail connecting block B, 10, a third line rail connecting block B, 11, a fourth line rail connecting block B, 12, a rotating block A, 13, four rotating connecting blocks A, 14, two rotating connecting blocks B, 15, a rotating block B, 16, bearing, 17, bearing supporting block A, 18, bearing positioning pins, 19, a wafer resistance substrate, 20, bearing B, 21, a fixed shaft, 22, a bearing, 23, a vacuum suction hole, 24, a vacuum suction nozzle, 25, an elastic pulling piece, 26, a fixed column, 27 and a limiting sheet metal piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc., indicate orientations or positional relationships based on those shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The center positioning mechanism provided by the utility model comprises a base 1, a cover plate 2, a guide rail 3, a supporting block 4, an eccentric link mechanism and a cylinder 5, wherein four corners of the cover plate 2 are fixedly arranged on the supporting block 4 through connecting pieces, and the lower end surface of the supporting block 4 is fixedly arranged on the base 1. In this embodiment, the cover plate 2 can be selected to have different sizes according to the model of the wafer resistor substrate to be processed, so as to meet the processing requirements of different model wafer resistor substrates (mainly 50 × 60mm and 60 × 70 mm). In apron 2's below, and be located the left and right side symmetry of base 1 upper surface and be equipped with first line rail connecting block A6 and second line rail connecting block A7, be equipped with first line rail connecting block B8 and second line rail connecting block B9 side by side in the front side of base 1's upper surface, be equipped with third line rail connecting block B10 and fourth line rail connecting block B11 side by side in the rear side of base 1's upper surface, first line rail connecting block A6, second line rail connecting block A7, first line rail connecting block B8, second line rail connecting block B9, third line rail connecting block B10 and fourth line rail connecting block B11 all slide and set up on guide rail 3, wherein second line rail connecting block A7, first line rail connecting block B8, fourth line rail connecting block B11 all are connected with cylinder 5 through spacing sheet metal part 27, eccentric connecting rod mechanism sets up the center at base 1 upper surface, first line rail connecting block A6, second line rail connecting block A7, All be equipped with the product mounting on first line rail connecting block B8, second line rail connecting block B9, third line rail connecting block B10 and the fourth line rail connecting block B11, be linked together through eccentric link mechanism between first line rail connecting block A6, second line rail connecting block A7, first line rail connecting block B8, second line rail connecting block B9, third line rail connecting block B10 and the fourth line rail connecting block B11. In the process of positioning a product, the second line rail connecting block A7, the first line rail connecting block B8 and the fourth line rail connecting block B11 are driven by the cylinder 5 to move on the guide rail 3, and because the six line rail connecting blocks are connected through the eccentric connecting rod mechanism, the six line rail connecting blocks and the bearing on the six line rail connecting blocks can synchronously move on the corresponding guide rail and move towards the center direction to position the product, so that the repeated positioning precision is high, and the positioning effect is good.

Preferably, as a second embodiment of the present invention, this embodiment is further limited to the above embodiment, and the specific structure of the eccentric link mechanism is as follows: including setting up at base 1 central rotatory piece A12, four swivelling joint blocks A13, two swivelling joint blocks B14 and two rotatory pieces B15, swivelling joint block A12's both ends are connected with first line rail connecting block A6, second line rail connecting block A7 respectively through swivelling joint block B14, swivelling joint block B14 still is connected with rotatory piece B15 respectively, every be equipped with two swivelling joint blocks A13 on the swivelling joint block B15 respectively, four swivelling joint block A13's the other end is connected with first line rail connecting block B8, second line rail connecting block B9, third line rail connecting block B10, fourth line rail connecting block B11 respectively. In the embodiment, the synchronous action of the plurality of line rail connecting blocks can be realized through the eccentric link mechanism with a simple structure, so that the positioning effect is ensured.

Preferably, as a third embodiment of the present invention, this embodiment is a further limitation of the first embodiment, a product fixing piece a is respectively arranged on the first line rail connecting block B8, the second line rail connecting block B9, the third line rail connecting block B10 and the fourth line rail connecting block B11, the product fixing piece a includes a bearing block a17, a bearing pin 18, and the bearing pin 18 fixes the bearing block a17 to the bearing block a 16.

Preferably, as a fourth embodiment of the present invention, this embodiment is a further modification of the above-described embodiment, the first line rail connecting block A6 and the second line rail connecting block A7 are respectively provided with a product fixing piece B, the product fixing piece B comprises a bearing 16, a bearing block B20 and a bearing pin 18, through holes are formed in the two ends of the bearing block B20 of the bearing, a bearing 16 is fixedly arranged in each through hole through a bearing positioning pin 18, in the embodiment, the bearings 22 sleeved on the fixed shaft 21 and the fixed shaft 21 are respectively fixed on the first track connecting block A6 and the second track connecting block a7 at the lower end of the bearing block B20, therefore, the bearing block B20 of the bearing can rotate relative to the first line rail connecting block A6 and the second line rail connecting block A7, and two bearings 16 on the bearing block B20 of the bearing can be fully contacted with the product.

It should be noted that in the third and fourth embodiments, the bearings are the bearings and the bearing fixing blocks are the bearing fixing blocks, which are commonly known by those skilled in the art and are specifically described herein.

Preferably, as a fifth embodiment of the present invention, this embodiment is further limited to the fourth embodiment, a plurality of vacuum holes 23 are uniformly distributed on the upper surface of the cover plate 2 at intervals, a vacuum nozzle 24 is disposed on the side surface of the cover plate 2, when the wafer resistor substrate 28 is placed on the upper surface of the cover plate 2, the cover plate is vacuumized by the vacuum nozzle 24, the wafer resistor substrate 19 is adsorbed and fixed by the vacuum holes 23 on the cover plate, and an optimal positioning effect is achieved by matching with a product fixing bearing.

Preferably, as a sixth embodiment of the present invention, this embodiment is a further improvement of the fourth embodiment, an elastic pulling member 25 is respectively disposed on one side of each of the limiting sheet metal parts 27, one end of each of the elastic pulling members 25 is connected to the limiting sheet metal part 27, and the other end of each of the elastic pulling members is connected to a fixing column 26 disposed on the base 1. In the present embodiment, the elastic pulling member 25 is preferably a spring, which serves as an auxiliary pulling member for the cylinder 5, and can improve the sensitivity of the reaction of the line rail connecting block, thereby ensuring the positioning effect thereof.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A centering mechanism, its characterized in that: including base (1), apron (2), guide rail (3), supporting shoe (4), eccentric link mechanism and cylinder (5), left side at the upper surface of base (1), the right side symmetry is equipped with first line rail connecting block A (6) and second line rail connecting block A (7), front side at the upper surface of base (1) is equipped with first line rail connecting block B (8) and second line rail connecting block B (9) side by side, rear side at the upper surface of base (1) is equipped with third line rail connecting block B (10) and fourth line rail connecting block B (11) side by side, first line rail connecting block A (6), second line rail connecting block A (7), first line rail connecting block B (8), second line rail connecting block B (9), third line rail connecting block B (10) and fourth line rail connecting block B (11) all slide to be set up on guide rail (3), wherein second line rail connecting block A (7), The first line rail connecting block B (8) and the fourth line rail connecting block B (11) are connected with the cylinder (5) through limiting sheet metal parts (27), the eccentric connecting rod mechanism is arranged at the center of the upper surface of the base (1), the first line rail connecting block A (6), the second line rail connecting block A (7), the first line rail connecting block B (8), the second line rail connecting block B (9), the third line rail connecting block B (10) and the fourth line rail connecting block B (11) are respectively provided with a product fixing part, the first line rail connecting block A (6), the second line rail connecting block A (7), the first line rail connecting block B (8), the second line rail connecting block B (9), the third line rail connecting block B (10) and the fourth line rail connecting block B (11) are communicated through the eccentric connecting rod mechanism, four corners of the cover plate (2) are fixedly installed on the supporting block (4) through connecting parts, the lower end face of the supporting block (4) is fixedly arranged on the base (1).

2. A centering mechanism according to claim 1, wherein: eccentric link mechanism is including setting up at rotatory piece A (12), four swivelling joint piece A (13), two swivelling joint pieces B (14) and two rotatory piece B (15) at base (1) center, the both ends of rotatory piece A (12) are connected with first line rail connecting block A (6), second line rail connecting block A (7) respectively through swivelling joint piece B (14), swivelling joint piece B (14) still are connected with rotatory piece B (15) respectively, every be equipped with two swivelling joint piece A (13), four on the rotatory piece B (15) respectively the other end of swivelling joint piece A (13) is connected with first line rail connecting block B (8), second line rail connecting block B (9), third line rail connecting block B (10), fourth line rail connecting block B (11) respectively.

3. A centering mechanism according to claim 1, wherein: be equipped with a product mounting A on first line rail connecting block B (8), second line rail connecting block B (9), third line rail connecting block B (10), fourth line rail connecting block B (11) respectively, product mounting A includes bearing (16), bearing supporting shoe A (17) and bearing locating pin (18), bearing locating pin (18) will bear (16) fix on bearing supporting shoe A (17) bearing.

4. A centering mechanism according to claim 1, 2 or 3, wherein: be equipped with a product mounting B on first line rail connecting block A (6) and the second line rail connecting block A (7) respectively, product mounting B is including bearing pin (18) of bearing pin (20), bearing pin (21) are established through fixed axle (21) and the bearing (22) of cover on fixed axle (21) are passed through in every through-hole all opened the through-hole of bearing pin (20) of bearing pin (16), every all install respectively on first line rail connecting block A (6), second line rail connecting block A (7) through fixed axle (21) in the center of bearing pin (20).

5. A centering mechanism according to claim 4, characterized in that: a plurality of vacuum suction holes (23) are uniformly distributed on the upper surface of the cover plate (2) at intervals, and a vacuum pumping nozzle (24) is arranged on the side surface of the cover plate (2).

6. A centering mechanism according to claim 5, characterized in that: every one side of spacing sheet metal component (27) is equipped with elasticity respectively and draws piece (25), elasticity draws the one end and the spacing sheet metal component (27) of piece (25) to be connected, and elasticity draws the other end of piece and is connected with fixed column (26) of setting on base (1).