Positioning mechanism

Abstract

The utility model discloses a positioning mechanism which comprises a base, a linkage assembly, a driving assembly and a plurality of positioning assemblies, the base comprises a bottom seat and a top seat which are connected with each other and form a cavity, and a plurality of bearing parts and bearing positions in one-to-one correspondence with the positioning assemblies are distributed on the top seat; the linkage assembly comprises a linkage piece which is contained in the cavity and elastically floats between the base and the top base. The driving assembly comprises an eccentric part which is rotationally arranged on the top seat in a penetrating mode and eccentrically abuts against the linkage part; each positioning assembly comprises a positioning seat which is accommodated in the cavity and is adjacent to the corresponding bearing position, and a first positioning piece and a second positioning piece which are slidably and elastically connected to the positioning seat; and the linkage piece elastically floats so as to drive the first positioning piece and the second positioning piece to be close to the corresponding bearing positions respectively through matching and abutting between the linkage piece and the inclined surfaces of the first positioning piece and the second positioning piece, so that the parts are tightly pressed on the corresponding bearing positions. According to the positioning mechanism, the flexible clamping part is positioned, the collision and scratching conditions of the part are reduced, and the welding yield is increased.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece positioning, and in particular to a positioning mechanism. Background Art

[0002] In actual production and processing, it is necessary to load workpieces, such as multiple precision parts, into the predetermined welding position of the carrier, and then clamp the workpieces to facilitate accurate welding of the workpieces. At present, parts are usually loaded into the predetermined welding position of the carrier manually using tools such as tweezers. However, due to the small size of the parts, the discharge opening of the predetermined welding position on the carrier is small, which makes it difficult for operators to load the parts, and in the process of loading the parts, the parts are easily scratched due to the small discharge opening, resulting in poor welding. Utility Model Content

[0003] In view of the above, it is necessary to propose a positioning mechanism to achieve the effect of positioning and clamping parts, so that operators can easily place parts and reduce the collision and scratching of parts.

[0004] The embodiment of the present application provides a positioning mechanism, including a base, wherein the base includes a base and a top seat connected to each other, a cavity is formed between the base and the top seat, and a plurality of bearing positions are distributed on the top seat, and the bearing positions bear parts;

[0005] The positioning mechanism also includes:

[0006] A linkage assembly, the linkage assembly comprising a linkage member received in the cavity and capable of elastically floating between the base and the top seat;

[0007] A driving assembly, comprising an eccentric member rotatably disposed through the top seat and eccentrically abutting against a side of the linkage member facing the top seat;

[0008] A plurality of positioning components, each of which corresponds to the plurality of bearing positions one by one, each of the positioning components comprising a positioning seat received in the cavity and extending toward the top seat to be adjacent to the corresponding bearing position, a first positioning member and a second positioning member which slide and are elastically connected to the positioning seat, the first positioning member and the second positioning member slide toward or away from the corresponding bearing position respectively and the sliding directions of the first positioning member and the second positioning member intersect, the linkage member is in inclined engagement with the first positioning member and the second positioning member, the linkage member elastically floats to drive the first positioning member and the second positioning member to approach or away from the corresponding bearing position respectively through inclined engagement, the first positioning member and the second positioning member are close to the corresponding bearing position to press the part against the corresponding bearing position.

[0009] In some embodiments, the linkage member has a plurality of extension portions, each of which corresponds one-to-one to each of the plurality of positioning components. The extension portion extends into the positioning seat of the corresponding positioning component, and is connected to a first oblique pin and a second oblique pin which respectively cooperate with and abut against the inclined surfaces of the first positioning component and the second positioning component.

[0010] In some embodiments, the linkage assembly further includes a sliding rod connected between the base and the top seat and passing through the linkage member, and a sliding sleeve embedded in the linkage member and slidably sleeved on the sliding rod.

[0011] In some embodiments, each of the positioning components further includes a buffer member abutting between the positioning seat and the base, so that the positioning seat together with the first positioning member and the second positioning member can float elastically relative to the base.

[0012] In some embodiments, the eccentric member includes an eccentric portion eccentrically abutting against the linkage member, and a perfect circular portion connected to the eccentric portion and rotatably penetrated through the top seat.

[0013] In some embodiments, the drive assembly further includes a connecting member connected to the eccentric member and located outside the base, and a handle rotatably connected to an end of the connecting member away from the eccentric member.

[0014] In some embodiments, the positioning mechanism further comprises:

[0015] A pressing assembly, which is used to bear the product to be welded with the part, the pressing assembly is arranged opposite to the base, and the pressing assembly is molded close to the base to make the product abut against the part;

[0016] The clamping assembly comprises a fixing piece connected to the top seat and a clamping module elastically and movably connected to the top seat. The clamping module and the fixing piece are arranged along the contour of the product. The clamping module presses the product onto the fixing piece.

[0017] In some embodiments, the snap-on module includes an oblique pin member elastically and floatingly connected to the top seat, and an abutment member slidably and elastically connected to the oblique pin member. The oblique pin member moves obliquely toward the top seat under the abutment of the pressing assembly, and the abutment member elastically abuts against the product.

[0018] In some embodiments, the positioning mechanism also includes a clamping assembly, one end of which is rotatably connected to the base or the top seat, and the other end of the clamping assembly is pressed onto the base by rotating to the side of the clamping assembly away from the base.

[0019] In some embodiments, the base also includes a positioning rod connected to the top seat and adapted to pass through the pressing assembly, and a limiting member connected to the top seat and abutting against a side of the pressing assembly facing the base, and the positioning rod and the limiting member are spaced apart.

[0020] When the above-mentioned positioning mechanism is in use, the eccentric piece eccentrically abuts the linkage piece to make the linkage piece float toward the top seat, and the linkage piece abuts the first positioning piece and the second positioning piece through the inclined surface cooperation with the first positioning piece and the second positioning piece, so that the first positioning piece and the second positioning piece slide away from the corresponding bearing position respectively, so as to increase the discharge space between the first positioning piece, the second positioning piece and the corresponding bearing position, so as to facilitate the placement of the part at the bearing position. After the part is placed at the bearing position, the eccentric piece reversely eccentrically abuts the linkage piece to make the linkage piece float toward the base, so that the linkage piece removes the inclined surface abutting force on the first positioning piece and the second positioning piece, and the first positioning piece and the second positioning piece slide close to the corresponding bearing position under the action of their respective elastic forces to press the part to the corresponding bearing position, thereby realizing the positioning and clamping of the part.

[0021] The positioning mechanism provided in the embodiment of the present application achieves the effect of positioning and clamping parts through the cooperation of the base, the linkage component, the drive component and the positioning component. The linkage component is abutted with the inclined surfaces of the first positioning component and the second positioning component. When the linkage component floats toward the top seat, the discharge space between the first positioning component, the second positioning component and the bearing position can be increased, so that the operator can place the parts more easily. In addition, due to the increase in the discharge space, the scratches on the parts can be reduced, which is conducive to improving the welding yield of the parts. In addition, since the first positioning component and the second positioning component elastically abut the parts under the action of their own elastic forces, the effect of flexibly clamping the parts is achieved, which is conducive to eliminating the cumulative error caused by the tolerance of the parts themselves, and is conducive to improving the positioning yield; since the positioning and clamping of the parts can be achieved by rotating the eccentric component, the positioning mechanism is simple to operate, which is conducive to reducing the labor intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the positioning mechanism provided in an embodiment of the present application.

[0023] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the positioning mechanism shown.

[0024] Figure 3 yes Figure 2 Schematic diagram of the decomposed structure of the positioning mechanism.

[0025] Figure 4 yes Figure 3 A schematic structural diagram of the driving assembly of the positioning mechanism from another perspective.

[0026] Figure 5 yes Figure 3 Schematic diagram of the exploded structure of the positioning component of the positioning mechanism.

[0027] Figure 6 yes Figure 3 Schematic diagram of the exploded structure of the card connection module of the positioning mechanism.

[0028] Main component symbols

[0029] Positioning mechanism 100

[0030] Base 10

[0031] Cavity 11

[0032] Base 12

[0033] Through hole 121

[0034] Top seat 13

[0035] Loading position 14

[0036] Positioning rod 15

[0037] Limiting piece 16

[0038] Linkage component 20

[0039] Linkage 21

[0040] Avoidance hole 211

[0041] Extension 212

[0042] Reset 22

[0043] Slide bar 23

[0044] Slide 24

[0045] First oblique pin 25

[0046] Second oblique pin 26

[0047] Drive assembly 30

[0048] Eccentric 31

[0049] Eccentric part 311

[0050] Perfect circle 312

[0051] Connector 32

[0052] Handle 33

[0053] Positioning component 40

[0054] Positioning seat 41

[0055] First chute 411

[0056] Second chute 412

[0057] First positioning member 42

[0058] First side track 421

[0059] First hole 422

[0060] Second positioning member 43

[0061] Second side rail 431

[0062] Second hole 432

[0063] The first elastic member 44

[0064] The second elastic member 45

[0065] Buffer 46

[0066] Press-fit assembly 50

[0067] Positioning hole 51

[0068] Card assembly 60

[0069] Fixing 61

[0070] Card module 62

[0071] Inclined pin 621

[0072] Limiting slot 622

[0073] Strip hole 623

[0074] Abutment 624

[0075] The first elastic member 625

[0076] The second elastic member 626

[0077] Pin 627

[0078] Clamping assembly 70 DETAILED DESCRIPTION

[0079] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0080] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0081] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0082] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0083] See also Figure 1 The embodiment of the present application provides a positioning mechanism 100, which can position and flexibly clamp multiple parts (not shown), and can also position a product (not shown) to facilitate welding of the product with multiple parts. The product can be a flat object such as a panel, and the part can be an L-shaped object.

[0084] Please refer to Figure 2 and Figure 3The positioning mechanism 100 includes a base 10, a linkage assembly 20 received in the base 10, a driving assembly 30 penetrating the base 10 and eccentrically abutting the linkage assembly 20, a plurality of positioning assemblies 40 received in the base 10 and abutting against the inclined surfaces of the linkage assembly 20, a pressing assembly 50 arranged opposite to the base 10 and located above the base 10, a clamping assembly 60 connected to the base 10, and a pressing assembly 70 rotatably connected to the base 10. The base 10 receives a plurality of parts, the linkage assembly 20 , the driving component 30 and multiple positioning components 40 cooperate to position and flexibly clamp multiple parts on the base 10, the pressing component 50 receives the product to be welded with multiple parts and is molded with the base 10, so that the product abuts against the multiple parts, the clamping component 60 clamps the product received by the pressing component 50, and the clamping component 70 presses the pressing component 50 on the base 10, so that the product can be accurately and stably abutted against the multiple parts, so as to facilitate the welding of the product with the multiple parts and improve the welding yield.

[0085] The base 10 includes a base 12 and a top seat 13 which are interconnected and form a cavity 11, that is, the base 10 is a hollow structure, and a plurality of bearing positions 14 for bearing parts are distributed on the top seat 13. It can be understood that the number of bearing positions 14 can be adaptively set according to the number of parts and the positions to be welded, and each bearing position 14 is connected to the cavity 11. In the embodiment of the present application, a plurality of through holes 121 are opened on the base 12, and the plurality of through holes 121 correspond one-to-one to the plurality of bearing positions 14 and are all connected to the cavity 11. In this way, when welding a product and a plurality of parts, the laser can pass through the through holes 121 to irradiate into the cavity 11, and then irradiate onto the parts at the bearing positions 14, so that the parts and the product can be welded.

[0086] The base 10 also includes a positioning rod 15 connected to the top seat 13 and adapted to be inserted into the pressing assembly 50, and a stopper 16 connected to the top seat 13 and abutting against the side of the pressing assembly 50 facing the base 10, and the positioning rod 15 and the stopper 16 are arranged at intervals. In the embodiment of the present application, the number of the positioning rods 15 is two, and the two positioning rods 15 are arranged diagonally, and the number of the stoppers 16 is four. In this way, by setting the above-mentioned positioning rods 15 and positioning holes 51, the positioning rods 15 are adapted to be inserted into the pressing assembly 50, and the mold clamping accuracy of the pressing assembly 50 and the base 10 is guaranteed; by setting the above-mentioned stopper 16, the pressing assembly 50 is limited by the stopper 16, and the pressing assembly 50 is prevented from being over-molded with the base 10, so as to avoid crushing the products and parts, and ensure the yield of the products and parts. It can be understood that the number of positioning rods 15 and stoppers 16 can also be more or less, which can be set according to the actual situation.

[0087] The linkage assembly 20 includes a linkage member 21 housed in the cavity 11 and capable of elastically floating between the base 12 and the top seat 13. Specifically, the linkage assembly 20 also includes a plurality of reset members 22. The reset members 22 may be springs. The plurality of reset members 22 are all connected between the linkage member 21 and the base 12. The elastic expansion and contraction of the reset members 22 enables the linkage member 21 to elastically float between the base 12 and the top seat 13, thereby enabling the linkage member 21 to approach or move away from the top seat 13.

[0088] In order to ensure the movement accuracy of the linkage member 21 when it floats between the base 12 and the top seat 13, the linkage assembly 20 also includes a slide bar 23 connected between the base 12 and the top seat 13 and inserted into the linkage member 21, and a slide sleeve 24 embedded in the linkage member 21 and slidably sleeved on the slide bar 23, wherein the number of slide bars 23 and the slide sleeve 24 are both multiple and arranged in a one-to-one correspondence. In this way, by arranging the above-mentioned slide bars 23 and slide sleeves 24, the linkage member 21 can move along the extension direction of the slide bar 23, so that the movement direction of the linkage member 21 is limited by the slide bar 23, and the movement accuracy of the linkage member 21 when it floats between the base 12 and the top seat 13 is ensured.

[0089] The linkage member 21 is provided with a avoidance hole 211 for avoiding the driving assembly 30. By providing the avoidance hole 211, the driving assembly 30 is avoided so that the driving assembly 30 can abut against the linkage member 21. In addition, by providing the avoidance hole 211, the weight of the linkage member 21 can be reduced, thereby reducing the weight of the positioning mechanism 100.

[0090] The linkage member 21 has a plurality of extensions 212 corresponding to the plurality of positioning components 40, each extension 212 extends into the corresponding positioning component 40, and each extension 212 is connected with a first oblique pin 25 and a second oblique pin 26 that are in abutment with the corresponding positioning component 40. In the embodiment of the present application, the ends of the first oblique pin 25 and the second oblique pin 26 are both roughly conical. In this way, by providing the first oblique pin 25 and the second oblique pin 26, the linkage component 20 and the plurality of positioning components 40 are in abutment with the oblique surface.

[0091] The driving assembly 30 includes an eccentric member 31 that is rotatably disposed in the top seat 13 and eccentrically abuts against the side of the linkage member 21 facing the top seat 13. The eccentric member 31 is an eccentric structure around the rotation center of the eccentric member 31. The eccentric member 31 eccentrically abuts against the linkage member 21, so that the linkage member 21 can move between the base 12 and the top seat 13, thereby making the linkage member 21 close to or away from the top seat 13. For details, please refer to Figure 4The eccentric member 31 includes an eccentric portion 311 eccentrically abutted against the linkage member 21 and a perfect circular portion 312 connected to the eccentric portion 311 and rotatably penetrated through the top seat 13, wherein the cross-sectional profile of the eccentric portion 311 is roughly formed by connecting a major arc and a straight line, and the eccentric portion 311 is defined as consisting of a major arc portion and a straight line portion. In this way, the eccentric part 31 is rotatably connected to the top seat 13 through the perfect circular portion 312, and the linkage part 21 is moved between the base 12 and the top seat 13 by abutting the major arc portion and the straight line portion of the eccentric part 311 with the linkage part 21. Specifically, when the major arc portion of the eccentric part 311 abuts against the linkage part 21, the eccentric part 311 presses the linkage part 21 downward, so that the linkage part 21 is away from the top seat 13 and compresses the reset part 22; when the straight line portion of the eccentric part 311 abuts against the linkage part 21, the major arc portion removes the abutting force on the linkage part 21, so that the linkage part 21 moves upward under the elastic force of the reset part 22, thereby making the linkage part 21 close to the top seat 13.

[0092] It can be understood that in order to ensure the balance of the eccentric member 31 during rotation, the number of the perfect circular portions 312 can be two and they are respectively connected to the two ends of the eccentric portion 311. The avoidance hole 211 on the linkage member 21 is used to avoid one of the perfect circular portions 312, and the avoidance hole 211 on the linkage member 21 avoids one of the perfect circular portions 312, so that the eccentric portion 311 can abut against the linkage member 21.

[0093] In order to facilitate the operation of the eccentric member 31, the driving assembly 30 further includes a connecting member 32 which is vertically connected to the circular portion 312 of the eccentric member 31 and is located outside the base 10, and a handle 33 which is rotatably connected to one end of the connecting member 32 away from the eccentric member 31. The handle 33 is vertically connected to the connecting member 32, and the handle 33 and the eccentric member 31 are respectively located on opposite sides of the connecting member 32. In this way, by setting the above-mentioned connecting member 32 and handle 33, the operator can drive the eccentric member 31 to rotate by operating the handle 33; in addition, by setting the connecting member 32, the rotation angle and state of the eccentric member 31 can also be determined by the rotation position of the connecting member 32, which is conducive to enabling the operator to accurately rotate the eccentric member 31. By setting the handle 33 and the connecting member 32 as a rotation connection, the labor intensity of the operator is reduced and physical strength is saved.

[0094] The plurality of positioning components 40 correspond to the plurality of bearing positions 14 and the plurality of extensions 212 one by one, that is, the number of positioning components 40 is equal to the number of bearing positions 14 and the number of extensions 212, and each positioning component 40 is used to position and flexibly clamp the part at the corresponding bearing position 14, and the structures of the plurality of positioning components 40 are substantially similar. Figure 5Each positioning assembly 40 includes a positioning seat 41 received in the cavity 11 and extending toward the top seat 13 to be adjacent to the corresponding bearing position 14, a first positioning member 42 and a second positioning member 43 that are slidable and elastically connected to the positioning seat 41, the first positioning member 42 and the second positioning member 43 slide toward or away from the corresponding bearing position 14 respectively, and the sliding directions of the first positioning member 42 and the second positioning member 43 intersect. In the embodiment of the present application, the sliding directions of the first positioning member 42 and the second positioning member 43 are perpendicular to each other, and the positioning seat 41 is roughly a hollow structure so that the laser can pass through the positioning seat 41 and irradiate the parts at the bearing position 14. The positioning seat 41 is provided with a first slide groove 411 and a second slide groove 412 which are perpendicular and located on two adjacent sides of the bearing position 14, wherein both sides of the first positioning member 42 are provided with a protruding first side rail 421, and both sides of the second positioning member 43 are provided with a protruding second side rail 431, the first positioning member 42 is slidably arranged in the first slide groove 411 through the first side rail 421, and the second positioning member 43 is slidably arranged in the second slide groove 412 through the second side rail 431, so that the sliding accuracy of the first positioning member 42 and the second positioning member 43 is ensured by setting the first side rail 421 and the second side rail 431. The first positioning member 42, the second positioning member 43 and the corresponding bearing position 14 enclose a material discharge space for placing parts, and the first positioning member 42, the second positioning member 43 and the corresponding bearing position 14 can be adapted to clamp parts.

[0095] The positioning assembly 40 also includes a first elastic member 44 abutting between the first positioning member 42 and the positioning seat 41 and located in the first slide groove 411, and a second elastic member 45 abutting between the second positioning member 43 and the positioning seat 41 and located in the second slide groove 412, wherein both the first elastic member 44 and the second elastic member 45 can be springs. In this way, by providing the above-mentioned first elastic member 44 and second elastic member 45, the first positioning member 42 and the second positioning member 43 are elastically and slidably connected to the positioning seat 41. In the embodiment of the present application, the first elastic member 44 and the second elastic member 45 are respectively embedded in the corresponding first positioning member 42 and the second positioning member 43.

[0096] The multiple extensions 212 of the linkage member 21 extend into the hollow structure of the corresponding positioning seat 41 of the positioning assembly 40, and the first oblique pin 25 and the second oblique pin 26 on each extension 212 respectively cooperate with the corresponding first positioning member 42 and the second positioning member 43. In the embodiment of the present application, the ends of the first oblique pin 25 and the second oblique pin 26 are both roughly conical, the first positioning member 42 is provided with a first hole 422, and the second positioning member 43 is provided with a second hole 432. The first oblique pin 25 and the second oblique pin 26 are used to insert into the corresponding first hole 422 and the second hole 432, and the tapered inclined surfaces of the first oblique pin 25 and the second oblique pin 26 abut against the corresponding first hole 422 and the second hole 432 to convert the up and down movement force into the horizontal movement force, so that the first positioning member 42 and the second positioning member 43 are close to or away from the bearing position 14. In addition, by inserting the first oblique pin 25 and the second oblique pin 26 into the corresponding first hole 422 and second hole 432 , the function of guiding and positioning the first positioning member 42 and the second positioning member 43 can also be achieved.

[0097] In a specific implementation process, the eccentric member 31 is rotated by the handle 33 so that the straight portion of the eccentric portion 311 abuts against the linkage member 21, and the linkage member 21 moves upward under the elastic force of the reset member 22, so that the first oblique pin 25 and the second oblique pin 26 are respectively inserted into the corresponding first hole 422 and the second hole 432, and the first positioning member 42 and the second positioning member 43 are moved away from the corresponding bearing position 14 by the inclined surface cooperation force of the first oblique pin 25 and the second oblique pin 26 and compress the corresponding first elastic member 44 and the second elastic member 45, thereby increasing the first positioning member 42, the second positioning member 43 and the corresponding bearing The discharge space between the load positions 14 is for placing parts in the load position 14. After the parts are placed in the load position 14, the eccentric member 31 is driven to rotate in the opposite direction by the handle 33, so that the superior arc part of the eccentric part 311 abuts against the linkage member 21, and the linkage member 21 moves downward and compresses the reset member 22, so that the first oblique pin 25 and the second oblique pin 26 are disengaged from the corresponding first hole 422 and the second hole 432, and the first positioning member 42 and the second positioning member 43 respectively move close to the corresponding load position 14 under the elastic force of the first elastic member 44 and the second elastic member 45, thereby flexibly clamping the parts at the corresponding load position 14.

[0098] It can be understood that in other embodiments, the first oblique pin 25 and the second oblique pin 26 can be provided with inclined surfaces, and corresponding inclined surfaces can be provided on the first positioning member 42 and the second positioning member 43, so as to achieve the effect that the first oblique pin 25 and the second oblique pin 26 respectively cooperate and abut with the inclined surfaces of the first positioning member 42 and the second positioning member 43. The specific setting can be made according to the actual situation, and the embodiments of the present application will not be repeated here.

[0099] Each positioning assembly 40 also includes a buffer 46 abutting between the positioning seat 41 and the base 12, so that the positioning seat 41 together with the first positioning member 42 and the second positioning member 43 can float elastically relative to the base 12, wherein the buffer 46 can be a spring. In this way, by setting the above-mentioned buffer 46, when the pressing assembly 50 receives the product and closes the mold with the base 10, the product will abut the part and the positioning seat 41, and the positioning seat 41 has a tendency to move upward under the elastic force of the buffer 46, so that the part and the product can be flexibly abutted, eliminating the cumulative error between the product and the part, improving the abutment accuracy between the part and the product, and facilitating the improvement of the welding yield.

[0100] In order to ensure the mold-fitting accuracy between the pressing assembly 50 and the base 10, a positioning hole 51 is provided on the pressing assembly 50 (see Figure 2 ) In this way, by setting the above-mentioned positioning hole 51 and by the plug-in fit between the positioning rod 15 and the positioning hole 51, the mold closing accuracy of the pressing assembly 50 and the base 10 is ensured.

[0101] The clamping assembly 60 includes a fixing part 61 connected to the top seat 13 and a clamping module 62 elastically and movably connected to the top seat 13. There are four clamping modules 62 and three fixing parts 61, two of which are connected to the short sides of the top seat 13, and the other two are connected to the long sides of the top seat 13. One of the fixing parts 61 is connected to the other short side of the clamping module 62, and the other two are connected to the other long side of the top seat 13, that is, the clamping module 62 and the fixing part 61 are arranged along the contour of the product. When the pressing assembly 50 receives the product and closes the mold with the base 10, the pressing assembly 50 squeezes the clamping module 62 so that the clamping module 62 moves downward and toward the relative fixing part 61, that is, the clamping module 62 moves obliquely toward the top seat 13, so that the clamping module 62 presses the product against the fixing part 61 to achieve abutment between the product and the part. In this way, by providing the above-mentioned clamping module 62 and the fixing member 61, flexible clamping of the product is achieved.

[0102] See also Figure 6Each of the card-connecting modules 62 includes an oblique pin 621 elastically floatingly connected to the top seat 13, and an abutment 624 slidably and elastically connected to the oblique pin 621. Specifically, a side of the oblique pin 621 away from the abutment 624 is set as an inclined surface. Correspondingly, an inclined surface adapted to the oblique pin 621 is provided on the base 10. A limiting groove 622 is provided at the upper end of the oblique pin 621. The abutment 624 is slidably arranged in the limiting groove 622. The two groove walls of the limiting groove 622 are respectively provided with strips. The strip hole 623 extends in a direction parallel to the sliding direction of the abutment 624. The snap-in module 62 further includes a first elastic member 625 abutting between the top seat 13 and the oblique pin member 621, a second elastic member 626 abutting between the oblique pin member 621 and the abutment 624 and located in the limiting groove 622, and a pin shaft 627 passing through the abutment 624 and with both ends located in the two strip holes 623, wherein the first elastic member 625 and the second elastic member 626 are both springs. Thus, by setting the specific structure of the above-mentioned clamping module 62, when the pressing assembly 50 receives the product and closes the mold with the base 10, the pressing assembly 50 presses the inclined pin 621 downward, and the inclined pin 621 moves obliquely toward the top seat 13 by cooperating with the inclined surface of the top seat 13 under the abutment of the pressing assembly 50, and at the same time, the abutting member 624 elastically abuts the product under the elastic action of the second elastic member 626, so that the product is elastically pressed on the corresponding fixing member 61, thereby achieving flexible clamping of the product and achieving precise abutment between the product and the parts. In addition, by setting the pin 627 and the strip hole 623, on the one hand, the strip hole 623 ensures that the abutting member 624 can move in the limiting groove 622, and on the other hand, the pin 627 prevents the abutting member 624 from being separated from the limiting groove 622, thereby ensuring the stable use of the clamping module 62.

[0103] There are two clamping assemblies 70, which are respectively arranged on both sides of the base 10. One end of each clamping assembly 70 is rotatably connected to the top seat 13, and the other end of the clamping assembly 70 is rotated to the side of the pressing assembly 50 away from the base 10 to press the pressing assembly 50 on the base 10. The other end of the clamping assembly 70 protrudes from the pressing assembly 50. In this way, by setting the above-mentioned clamping assembly 70, on the first hand, the pressing assembly 50 is pressed on the base 10 by the clamping assembly 70 to ensure the stability of the positioning mechanism 100 after the mold is closed. On the second hand, after the pressing assembly 50 is closed with the base 10, the positioning mechanism 100 can be turned over, and the entire positioning mechanism 100 can be supported by the clamping assembly 70, so that the laser can pass through the through hole 121 of the base 12 and the cavity 11 to weld the parts and products at the bearing position 14.

[0104] The positioning mechanism 100 provided in the embodiment of the present application achieves the effect of positioning and clamping parts through the cooperation of the base 10, the linkage assembly 20, the drive assembly 30 and the positioning assembly 40. The linkage member 21 is abutted with the inclined surfaces of the first positioning member 42 and the second positioning member 43. When the linkage member 21 floats toward the top seat 13, the discharge space between the first positioning member 42, the second positioning member 43 and the corresponding bearing position 14 can be increased, so that the operator can place the parts more easily. In addition, due to the increase in the discharge space, the scratching of the parts can be reduced, which is conducive to improving the welding yield of the parts. In addition, since the first positioning member 42 and the second positioning member 43 elastically abut the parts under the action of their own elastic forces, the effect of flexibly clamping the parts is achieved, which is conducive to eliminating the cumulative error caused by the tolerance of the parts themselves, and is conducive to improving the positioning yield; since the positioning and clamping of the parts can be achieved by rotating the eccentric member 31, the positioning mechanism 100 is easy to operate, which is conducive to reducing the labor intensity of the operators.

[0105] The positioning mechanism 100 provided in the embodiment of the present application further achieves the effect of positioning parts and products at the same time through the cooperation of the pressing assembly 50 and the snap-fit ​​assembly 60, thereby improving the versatility of the positioning mechanism 100.

[0106] The positioning mechanism 100 provided in the embodiment of the present application further enables the pressing assembly 50 to be stably molded with the base 10 through the cooperation of the clamping assembly 70, thereby ensuring the abutment accuracy between the parts and the product, which is beneficial to improving the welding yield.

[0107] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A positioning mechanism, comprising a base, characterized in that: The base comprises a base and a top seat connected to each other, a cavity is formed between the base and the top seat, and a plurality of bearing positions are distributed on the top seat, and the bearing positions bear parts; The positioning mechanism also includes: A linkage assembly, the linkage assembly comprising a linkage member received in the cavity and capable of elastically floating between the base and the top seat; A driving assembly, comprising an eccentric member rotatably disposed through the top seat and eccentrically abutting against a side of the linkage member facing the top seat; A plurality of positioning components, each of which corresponds to the plurality of bearing positions one by one, each of the positioning components comprising a positioning seat received in the cavity and extending toward the top seat to be adjacent to the corresponding bearing position, a first positioning member and a second positioning member which slide and are elastically connected to the positioning seat, the first positioning member and the second positioning member slide toward or away from the corresponding bearing position respectively and the sliding directions of the first positioning member and the second positioning member intersect, the linkage member is in inclined surface fitting abutment with the first positioning member and the second positioning member, the linkage member elastically floats to drive the first positioning member and the second positioning member to approach or away from the corresponding bearing position respectively through inclined surface fitting abutment, the first positioning member and the second positioning member are close to the corresponding bearing position to press the part against the corresponding bearing position.

2. The positioning mechanism according to claim 1, characterized in that: The linkage member has a plurality of extension portions, each of which corresponds to each of the plurality of positioning components. The extension portion extends into the positioning seat of the corresponding positioning component, and is connected with a first oblique pin and a second oblique pin which respectively cooperate and abut with the inclined surfaces of the first positioning component and the second positioning component.

3. The positioning mechanism according to claim 1, characterized in that: The linkage assembly also includes a slide rod connected between the base and the top seat and passing through the linkage member, and a slide sleeve embedded in the linkage member and slidably sleeved on the slide rod.

4. The positioning mechanism according to claim 1, characterized in that: Each of the positioning components further includes a buffer member abutting between the positioning seat and the base, so that the positioning seat together with the first positioning member and the second positioning member can float elastically relative to the base.

5. The positioning mechanism according to claim 1, characterized in that: The eccentric member includes an eccentric portion eccentrically abutting against the linkage member, and a perfect circular portion connected to the eccentric portion and rotatably penetrated through the top seat.

6. The positioning mechanism according to claim 1, characterized in that: The driving assembly further comprises a connecting member connected to the eccentric member and located outside the base, and a handle rotatably connected to an end of the connecting member away from the eccentric member.

7. The positioning mechanism according to claim 1, characterized in that: The positioning mechanism also includes: A pressing assembly, which is used to bear the product to be welded with the part, the pressing assembly is arranged opposite to the base, and the pressing assembly is molded close to the base to make the product abut against the part; The clamping assembly comprises a fixing piece connected to the top seat and a clamping module elastically and movably connected to the top seat. The clamping module and the fixing piece are arranged along the contour of the product. The clamping module presses the product onto the fixing piece.

8. The positioning mechanism according to claim 7, characterized in that: The clamping module includes an oblique pin member elastically and floatingly connected to the top seat, and an abutment member slidably and elastically connected to the oblique pin member. The oblique pin member moves obliquely toward the top seat under the abutment of the pressing assembly, and the abutment member elastically abuts against the product.

9. The positioning mechanism according to claim 7, characterized in that: The positioning mechanism also includes a clamping assembly, one end of which is rotatably connected to the base or the top seat, and the other end of the clamping assembly is rotated to the side of the pressing assembly away from the base to press the pressing assembly onto the base.

10. The positioning mechanism according to claim 7, characterized in that: The base also includes a positioning rod connected to the top seat and adapted to pass through the pressing assembly, and a limiting member connected to the top seat and abutting against a side of the pressing assembly facing the base, and the positioning rod and the limiting member are spaced apart.

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