Positioning assembly and stamping equipment with same

Abstract

The utility model relates to the technical field of positioning machining, and provides a positioning assembly and stamping equipment with the positioning assembly, the positioning assembly comprises a suction cup body, a mounting base and a positioning pin, and the suction cup body is provided with a suction cup wall used for being folded and shrunk under the pressure effect; the mounting base is provided with a first air guide channel, and the suction cup body is fixedly mounted on the mounting base and communicated with the first air guide channel; the positioning pin is provided with a second air guide channel used for being connected with a negative pressure generating element. And when the positioning pin is connected with the mounting seat, the first air guide channel is communicated with the second air guide channel. According to the positioning assembly, the part can be accurately positioned through negative pressure, the follow-up machining precision of the part is ensured, and the machining yield of the part can be improved.

Description

Technical Field

[0001] This application belongs to the field of positioning machining, and more specifically, relates to a positioning component and a stamping device having the same. Background Art

[0002] In the process of part machining, taking stamping production and other processes as an example, it is necessary to utilize the positioning hole features on the part and cooperate with the die positioning pin to achieve precise positioning of the part in the die cavity. Figure 1 It is a schematic diagram of positioning pin positioning in the related art, as Figure 1 shown. The main body of the positioning pin 102 in the related art is columnar, and its end is conical. An inclined surface 1021 is formed on the circumferential side of the conical end, and a straight surface 1022 is formed below the conical surface. The inclined surface 1021 is used for pre-guidance during the process of placing the part, and the straight surface 1022 is used for precise positioning. Only when the positioning hole feature on the part 101 is located in the area of the straight surface 1022 can precise positioning of the part 101 in the die cavity be achieved.

[0003] In the actual production process, due to the springback deformation of the stamping part itself, the part 101 does not completely fit the die surface, resulting in the positioning hole not being able to fully enter the area of the straight surface 1022, and further resulting in inaccurate part positioning. In this state, when the die is closed, the die surface will damage the part 101, as Figure 2 shown. Figure 2 It is a schematic diagram of the difference between normal positioning and abnormal positioning of parts in the related art. Among them, the part 101 located on the inclined surface 1021 (above) is a schematic diagram of the abnormal positioning part posture, and the part 101 located on the straight surface 1022 (below) is a schematic diagram of the normal positioning part posture.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] The purpose of the embodiments of this application is to provide a positioning component and a stamping device having the positioning component, so as to solve the technical problem of inaccurate positioning of parts during processing in the related art.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] In a first aspect, a positioning component is provided, including a suction cup main body, a mounting seat, and a positioning pin. The suction cup main body has a suction cup wall and is used for folding and shrinking under pressure. The mounting seat is provided with a first air guide channel. The suction cup main body is fixedly installed on the mounting seat and communicates with the first air guide channel. The positioning pin is provided with a second air guide channel for connecting a negative pressure generating element. When the positioning pin is connected to the mounting seat, the first air guide channel is communicated with the second air guide channel.

[0008] The above positioning component is used in the production and processing of parts with positioning holes. It can achieve precise positioning of parts by using negative pressure, ensuring the accuracy of subsequent processing of parts and helping to improve the processing yield of parts. Taking stamping processing as an example, before the mold is closed, the positioning component can use negative pressure to achieve precise positioning of parts, ensuring that the parts can be normally stamped and helping to avoid the risk of parts being damaged. The suction cup body in the positioning component can be communicated with the second air guide channel in the positioning pin through the first air guide channel provided on the mounting seat, and the positioning pin is used to guide the part for preliminary positioning. After the part is preliminarily positioned, the suction cup body can be attached to the part and form a cavity between the suction cup and the part. When the corresponding negative pressure generating element is activated, the gas in the cavity is sucked through the first air guide channel and the second air guide channel. At this time, negative pressure is formed in the cavity. The suction cup wall shrinks under the action of pressure and pulls the part attached to it to move along the positioning pin, ensuring that the part can be smoothly moved to the set positioning position and achieving precise positioning of the part.

[0009] Optionally, the end face of the mounting seat is a mounting surface, and the suction cup body is connected to the mounting seat through the mounting surface;

[0010] The first air guide channel includes a first air guide cavity, a first communication hole, and a first mounting hole. The first air guide cavity is provided in the mounting seat, and both the first communication hole and the first mounting hole are provided on the mounting surface;

[0011] The suction cup body is communicated with the first air guide cavity through the first communication hole, and the positioning pin is connected to the mounting seat through the first mounting hole.

[0012] Optionally, the first mounting hole is axially penetrated through the mounting seat;

[0013] When the positioning pin is inserted into the mounting seat through the first mounting hole, the second air guide channel communicates with the first air guide cavity.

[0014] Optionally, the mounting seat includes a detachable base and an end cover. The first communication hole is provided in one of the base and the end cover, and the number of the first mounting holes is two and they are respectively provided on the base and the end cover;

[0015] When the base and the end cover are connected, the first air guide cavity is located between the base and the end cover.

[0016] Optionally, the positioning pin includes a guiding section and a positioning section arranged axially, and the second air guide channel is provided in the positioning section;

[0017] The positioning section is inserted into the mounting seat through the first mounting hole.

[0018] Optionally, the second air guiding channel includes a second air guiding cavity, a second communication hole, and a second mounting hole. The second air guiding cavity is disposed within the positioning section, the second communication hole is disposed on the circumferential sidewall of the positioning section, and the second mounting hole is disposed on a side of the positioning section facing away from the guiding section;

[0019] When the positioning pin is connected to the mounting seat, the second communication hole communicates the first air guiding cavity and the second air guiding cavity, and the second mounting hole is located outside the mounting seat.

[0020] Optionally, the second mounting hole is disposed at one end of the positioning pin in the axial direction.

[0021] Optionally, an external thread is provided on the positioning section, an internal thread is provided on the first mounting hole, and the positioning section is threadedly connected to the first mounting hole.

[0022] Optionally, the suction cup wall includes an inner wall and an outer wall arranged in a nested manner, and an annular cavity is provided between the inner wall and the outer wall. The annular cavity communicates with the first air guiding channel;

[0023] The positioning pin passes through the suction cup main body and is connected to the mounting seat.

[0024] In a second aspect, a stamping device is provided, including the positioning component described in any one of the above.

[0025] Compared with the prior art, the present application at least includes the following beneficial effects:

[0026] In the positioning component provided by the embodiment of the present application, the suction cup main body can be communicated with the second air guiding channel through the first air guiding channel, and the second air guiding channel can be connected to a negative pressure generating component. When the foldable suction cup wall is attached to the side wall of the part to be stamped, a negative pressure can be formed inside the suction cup wall by suction using a negative pressure generating element. At this time, the suction cup wall can be folded and contracted under the action of the negative pressure, thereby pulling the part to be stamped to move along the positioning pin to the positioning section of the positioning pin to achieve precise positioning of the part.

[0027] The stamping device provided by the embodiment of the present application includes the above positioning component. Therefore, the beneficial effects of the stamping device including any one or several of the above positioning components will not be elaborated herein. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 Schematic diagram of locating pin positioning in the related art;

[0030] Figure 2 Schematic diagram showing the difference between normal positioning and abnormal positioning of parts in the related art;

[0031] Figure 3 Schematic diagram of the structure of the positioning component provided by the embodiment of the present application;

[0032] Figure 4 Cross-sectional view of the positioning component provided by the embodiment of the present application;

[0033] Figure 5 Schematic diagram of the use of the positioning component provided by the embodiment of the present application;

[0034] Figure 6 Schematic diagram of the cooperation between the positioning component provided by the embodiment of the present application and the part under normal pressure state;

[0035] Figure 7 Schematic diagram of the cooperation between the positioning component provided by the embodiment of the present application and the part under negative pressure state;

[0036] Figure 8 Exploded view of the positioning component provided by the embodiment of the present application;

[0037] Figure 9 Schematic diagram of the structure of the base in the positioning component provided by the embodiment of the present application;

[0038] Figure 10 Schematic diagram of the structure of the locating pin in the positioning component provided by the embodiment of the present application;

[0039] Figure 11 Schematic diagram of the structure of the suction cup body in the positioning component provided by the embodiment of the present application;

[0040] Figure 12 Top view of the suction cup body in the positioning component provided by the embodiment of the present application.

[0041] Among them, the reference numerals in the figure:

[0042] 101, part; 102, locating pin; 1021, inclined surface; 1022, straight surface;

[0043] 1. Suction cup body; 11. Suction cup wall; 111. Inner wall; 112. Outer wall; 12. Bottom wall; 121. Air hole; 2. Mounting seat; 21. First air guide channel; 211. First air guide cavity; 212. First communication hole; 213. First mounting hole; 22. Mounting surface; 201. Base; 202. End cap; 203. Step portion; 204. Sealing ring; 3. Positioning pin; 31. Second air guide channel; 311. Second air guide cavity; 312. Second communication hole; 313. Second mounting hole; 301. Guide section; 302. Positioning section; 303. Limiting ring; 4. Negative pressure generating element. Detailed implementation manner

[0044] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present application.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0048] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0050] In this application, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0051] In order to solve or to some extent improve the problem of inaccurate positioning that may exist during the machining of parts and improve the positioning accuracy of parts, in a first aspect, an embodiment of this application provides a positioning assembly. This positioning assembly can use negative pressure to guide the part to move along the positioning pin to a set position, so as to achieve the effects of improving the positioning accuracy of the part and increasing the machining yield rate of the part.

[0052] Please refer to Figures 3 - 4 , the positioning assembly provided by the embodiment of this application includes a suction cup body 1, a mounting seat 2, and a positioning pin 3. Based on Figure 3In the shown orientation, the positioning pin 3 is connected to the mounting seat 2 and partially located above the mounting seat 2, and is used to provide preliminary guidance for the part to be processed, so as to guide the part to be processed to achieve preliminary positioning; the suction cup body 1 is located above the mounting seat 2 and is used to fit and connect with the part to be processed guided by the positioning pin 3.

[0053] Specifically, the above-mentioned suction cup body 1 has a suction cup wall 11, and the suction cup wall 11 can be folded and contracted under pressure; please refer to Figure 4 , the mounting seat 2 is provided with a first air guide channel 21, the suction cup body 1 is fixedly installed on the mounting seat 2 and communicates with the first air guide channel 21; the positioning pin 3 is provided with a second air guide channel 31 for connecting the negative pressure generating element 4; when the positioning pin 3 is connected to the mounting seat 2, the first air guide channel 21 is communicated with the second air guide channel 31.

[0054] The above-mentioned positioning component is used in the production and processing process of parts with positioning holes, and can use negative pressure to achieve precise positioning of the parts, ensure the accuracy of subsequent processing of the parts, and help improve the processing yield of the parts. Taking stamping processing as an example, before the mold is closed, the positioning component can use negative pressure to achieve precise positioning of the parts, ensure that the parts can be normally stamped, and help avoid the risk of the parts being damaged.

[0055] It should be noted that the folding and contraction direction of the above-mentioned suction cup wall 11 is generally consistent with the axial direction of the positioning pin 3, so as to ensure that the suction cup wall 11 can pull the part to be processed to move along the correct path or direction during folding and contraction and achieve precise positioning relative to the positioning pin 3.

[0056] Specifically, in some embodiments, the folding and contraction direction of the suction cup wall 11 can be set to be consistent with the axial direction of the positioning pin 3.

[0057] When positioning the part, the part can be connected to the positioning pin 3 through the positioning hole on it to achieve preliminary positioning. At this time, the part is located above the suction cup body 1 and can be connected to the suction cup body 1. Subsequently, by controlling the suction cup body 1 to be in a negative pressure state, the suction cup is forced to fold and contract. At this time, the suction cup wall 11 can pull the part to move along the positioning pin 3 when contracting. After the part moves along the positioning pin 3 to the set position, precise positioning of the part is achieved. In the subsequent processing process, the precisely positioned part can have higher processing accuracy, which helps to improve the processing yield of the part in the subsequent processing steps and reduce the risk of damage to the part caused by positioning errors.

[0058] Taking stamping processing as an example, before the mold is closed, the suction cup wall 11 can be forced to fold and contract by making the inside of the suction cup body 1 in a negative pressure state. At this time, the contracted suction cup wall 11 can pull the part to move along the positioning pin 3 to achieve precise positioning, ensuring that the part can be normally stamped in the subsequent stamping process.

[0059] For the structure of the above positioning component, please refer to Figure 3 and Figure 4 , where the suction cup body 1 can be communicated with the second air guide channel 31 in the positioning pin 3 through the first air guide channel 21 provided on the mounting base 2, and the positioning pin 3 is used to guide the part for preliminary positioning.

[0060] After the part is preliminarily positioned, please refer to Figure 6 , at this time, the upper edge of the suction cup body 1 can be in contact with the lower surface of the part and form a cavity between the suction cup body 1 and the part, and this cavity is in a closed state. When the negative pressure generating element 4 as shown in Figure 5 is started, the gas in the positioning component can be drawn out through the second air guide channel 31 connected to the negative pressure generating element 4. Under the suction of the negative pressure generating element 4, the gas in the above cavity flows out through the first air guide channel 21 and the second air guide channel 31 in sequence, and the cavity in the suction cup body 1 is in a negative pressure state. At this time, the suction cup wall 11 can fold and contract under the action of the negative pressure, and pull the connected part to move downward synchronously along the positioning pin 3. Please refer to Figure 7 . In Figure 7 , the hollow arrow is used to indicate the flow direction of the air flow, and the solid arrow is used to indicate the moving direction of the part.

[0061] Driven by the suction cup body 1 in the negative pressure state, the part can move along the positioning pin 3 to the set positioning position. At this time, the positioning hole on the part can be sleeved on the positioning pin 3 according to the design requirements, and the part realizes precise positioning.

[0062] In some embodiments, for the structure of the mounting base 2, please refer to Figure 3 , Figure 4 and Figure 8 , one end in its axial direction is the mounting surface 22, and the above suction cup body 1 is mounted on the mounting base 2 through the mounting surface 22. A first air guide channel 21 is provided in the mounting base 2. The first air guide channel 21 includes a first air guide cavity 211, a first communication hole 212 and a first mounting hole 213. Among them, the first air guide cavity 211 is provided in the mounting base 2, and both the first communication hole 212 and the first mounting hole 213 are provided on the mounting surface 22. Among them, the suction cup body 1 is connected to the first air guide cavity 211 through the first communication hole 212, and the positioning pin 3 is connected to the mounting base 2 through the first mounting hole 213.

[0063] Please refer to Figure 4 and Figure 10, at this time, the number of the above-mentioned first mounting holes 213 is two, and they are respectively arranged at the upper and lower ends of the mounting base 2 along the axial direction of the mounting base 2. The first air guide cavity 211 is located between the two first mounting holes 213 arranged up and down. The positioning pin 3 passes through the two first mounting holes 213 and is connected to the mounting base 2. At this time, the above-mentioned first communication hole 212 is used to connect the first air guide cavity 211 and the space inside the suction cup body 1, and the first mounting hole 213 is used to connect the first air guide cavity 211 and the second air guide channel 31 provided on the positioning pin 3.

[0064] After the positioning pin 3 is connected to the mounting base 2 through the first mounting hole 213, in order to ensure that there is no air leakage at the connection between the two, it can be set that the first mounting hole 213 is provided with internal threads, and the corresponding outer side wall of the positioning pin 3 is provided with external threads, and the positioning pin 3 is threadedly connected to the mounting base 2. The above-mentioned thread structure can be engaged with each other during connection, and effectively reduce the gas leakage channel through this close contact method, thereby effectively preventing gas leakage. This thread structure is sufficient to meet the airtightness requirements during the processing.

[0065] In order to further improve the connection airtightness between the positioning pin 3 and the mounting base 2 at the first mounting hole 213, it can be set that at least one of the above-mentioned first mounting holes 213 has a sufficient depth (i.e., axial length) so that the threaded connection can achieve better airtightness.

[0066] Of course, in other embodiments, it can also be set that part of the sealant is filled at the first mounting hole 213. The sealant can be coated on the external threads of the positioning pin 3 and / or the internal threads of the first mounting hole 213 before the positioning pin 3 is connected to the mounting base 2. At this time, the above-mentioned sealant is in an uncured state. When the positioning pin 3 is threadedly connected to the mounting base 2, the above-mentioned sealant can gradually harden and solidify under the action of air. At this time, the positioning pin 3 and the mounting base 2 can obtain better airtightness under the action of the sealant.

[0067] In some embodiments, the above-mentioned mounting base 2 can be an integral structure or a split structure, and can be adaptively adjusted according to actual needs.

[0068] When the mounting base 2 is a split structure, please refer to Figure 8 and Figure 9 , the mounting base 2 includes a detachable base 201 and an end cover 202. When the base 201 and the end cover 202 are connected, the above-mentioned first air guide cavity 211 is formed between the base 201 and the end cover 202.

[0069] In order to ensure that the connection between the base 201 and the end cover 202 has good sealing performance, in some embodiments, the diameter of the end of the end cover 202 facing the base 201 is smaller than the inner diameter of the base 201, so that a step portion 203 is formed between the end cover 202 and the base 201. The step portion 203 is provided with a thread, and the base 201 and the end cover 202 can be threadedly connected through the step portion 203.

[0070] The above-mentioned step portion 203 can not only simplify the installation process of the base 201 and the end cover 202, but also help to increase the contact area between the end cover 202 and the base 201, thereby dispersing the force and improving the stability of the connection between the two; in addition, it also helps to limit the axial displacement between the end cover 202 and the base 201, avoiding connection failure due to accidents; at the same time, the step structure combined with the thread can help improve the sealing of the connection between the base 201 and the end cover 202, which helps to improve the sealing effect.

[0071] Of course, in other embodiments, in order to further improve the air tightness of the connection between the end cover 202 and the base 201, the mounting base 2 further includes a sealing ring 204 sleeved outside the step portion 203, and the sealing ring 204 is made of elastic material. When the base 201 and the end cover 202 are threadedly connected through the step portion 203, the relatively twisted base 201 and the end cover 202 can squeeze the sealing ring 204 and cause it to deform to a certain extent. The sealing ring 204 in a deformed state can further fit with the step portion 203 of the base 201 and the end cover 202, thereby further enhancing the sealing effect of the connection between the base 201 and the end cover 202.

[0072] See also Figure 8 and Figure 9 At this time, the above-mentioned mounting surface 22 and the first connecting hole 212 are both arranged on the base 201 , and the two first mounting holes 213 are distributed on the base 201 and the end cover 202 .

[0073] Of course, in other embodiments, the mounting surface 22 and the first connecting hole 212 may also be arranged on the end cover 202 . In this case, only the first mounting hole 213 structure is arranged on the base 201 , and correspondingly, the suction cup body 1 is also installed on the end cover 202 .

[0074] It should be noted that, since the positioning pin 3 is threadedly connected to the mounting seat 2 through the first mounting hole 213 , the first mounting holes 213 provided on the base 201 and the end cover 202 are both provided with internal thread structures matching with the positioning pin 3 .

[0075] Please refer to the structure of the positioning pin 3 Figure 8 and Figure 10, the positioning pin 3 includes a guiding section 301 and a positioning section 302 arranged axially. The free end of the guiding section 301 is an inclined surface with guiding function, and the positioning section 302 is a columnar structure for precise positioning. The second air guiding channel 31 is arranged in the positioning section 302.

[0076] When the positioning section 302 is inserted through the first mounting hole 213 into the mounting seat 2, the end of the positioning section 302 facing away from the guiding section 301 can extend outwards relative to the end cover 202.

[0077] The above-mentioned mounting seat 2 includes a base 201 and an end cover 202. Therefore, the positioning section 302 can be inserted through the base 201 and the end cover 202 and extend outwards relative to the end cover 202.

[0078] Please refer to Figure 6 , to ensure that the positioning pin 3 can conduct preliminary guiding and positioning on the part, it is necessary to set the free end of the guiding section 301 to always extend outwards relative to the suction cup body 1.

[0079] After the positioning pin 3 realizes the guiding and preliminary positioning of the part through the guiding section 301, in order to further conduct precise positioning on the part, it is necessary to connect the suction cup body 1, the first air guiding channel 21 and the external negative pressure generating element 4 through the second air guiding channel 31.

[0080] Specifically, the second air guiding channel 31 includes a second air guiding cavity 311, a second communication hole 312 and a second mounting hole 313. The second air guiding cavity 311 is arranged in the positioning section 302, the second communication hole 312 is arranged on the circumferential side wall of the positioning section 302, and the second mounting hole 313 is arranged on the side of the positioning section 302 facing away from the guiding section 301. Please refer to Figure 4 and Figure 10 . When the positioning pin 3 is connected to the mounting seat 2, the second communication hole 312 connects the first air guiding cavity 211 and the second air guiding cavity 311, and the second mounting hole 313 extends out with the positioning section 302 and is located outside the mounting seat 2.

[0081] The second communication hole 312 is arranged on the circumferential side wall of the positioning section 302 and communicates with the second air guiding cavity 311 located in the positioning section 302. Since the positioning section 302 can be inserted into the mounting seat 2 composed of the base 201 and the end cover 202 and is threadedly connected to the mounting seat 2, an external thread structure is also arranged on the axial side wall of the positioning section 302. The second communication hole 312 is located between two sections of external thread structures respectively used to connect the base 201 and the end cover 202. When the positioning section 302 is respectively connected to the base 201 and the end cover 202, the second communication hole 312 can be exactly located inside the mounting seat 2 and connected to the first air guiding cavity 211 of the mounting seat 2.

[0082] When negative pressure suction is generated at the second mounting hole 313 outside the mounting base 2, at this time, the gas in the first air guide cavity 211 will flow out of the second mounting hole 313 through the second communication hole 312 under the action of the suction force. The gas in the suction cup body 1 connected to the first air guide cavity 211 through the first communication hole 212 will also flow out of the second mounting hole 313 through the first communication hole 212, the first air guide cavity 211 and the second communication hole 312 in sequence under the action of the suction force. In this process, since the part is in contact with the suction cup body 1, the suction cup wall 11 can fold and contract under the negative pressure and pull the part to move axially along the positioning pin 3, and move to a position opposite to the positioning section 302 through the guiding section 301. At this time, precise positioning of the part can be achieved.

[0083] In order to enable the suction cup body 1 to quickly pull the part to the set position, in some embodiments, the number of the second communication holes 312 is set to be multiple, and the multiple second communication holes 312 can be evenly arranged along the circumferential side wall of the positioning section 302.

[0084] Please refer to Figure 10 , the number of the second communication holes 312 is four. Of course, in other embodiments, at least some of the second communication holes 312 can also be arranged in sequence along the axial direction of the positioning section 302 on the premise of ensuring that the second communication holes 312 are connected to the first air guide cavity 211.

[0085] On the positioning section 302, in order to ensure that the positioning section 302 with the second air guide channel 31 can be connected to the external negative pressure generating element 4, the second air guide channel 31 is arranged at one end of the positioning section 302 facing away from the guiding section 301. At this time, the second mounting hole 313 is arranged at one end of the positioning pin 3 on the axial direction facing away from the guiding section 301, and the second mounting hole 313 can protrude relative to the mounting base 2. The arrangement position of the second mounting hole 313 can be adaptively adjusted according to actual needs. When there is enough space below the positioning pin 3, the second mounting hole 313 can be arranged at one end of the positioning pin 3 on the axial direction pointing to the positioning section 302; when there is enough space on the side of the positioning pin 3, the second mounting hole 313 can be arranged on the circumferential side wall at one end of the positioning section 302 facing away from the guiding section 301. This embodiment does not limit the actual arrangement position of the second mounting hole 313, as long as it can ensure that the second mounting hole 313 can be directly or connected to the negative pressure generating element 4 through an air conveying pipeline.

[0086] In some embodiments, the negative pressure generating element 4 can be a device such as a vacuum pump. The second mounting hole 313 can be threadedly connected to the negative pressure generating element 4.

[0087] In other embodiments, when a part of the second air guide channel 31 is formed within the guiding section 301, the second mounting hole 313 can also be formed at the axial end of the guiding section 301. To facilitate connecting the negative pressure generating element 4 to the second air guide channel 31 through the second mounting hole 313, the negative pressure generating element 4 can be detachably connected to the positioning pin 3 according to processing requirements to facilitate the picking and placing of parts.

[0088] In order to better install the above-mentioned positioning pin 3, in some embodiments, the positioning pin 3 is further provided with a limiting ring 303. The limiting ring 303 is located in the middle of the positioning section 302 and is used to limit the positioning pin 3 when the positioning pin 3 is connected to the base 201.

[0089] At least part of the side edge of the above-mentioned limiting ring 303 extends radially outward to protrude relative to the positioning section 302. When the positioning section 302 is tightly connected to the base 201 through the first mounting hole 213, the limiting ring 303 just adheres to the mounting surface 22 of the base 201.

[0090] Specifically, please refer to Figure 10 , at this time, the limiting ring 303 is a ring structure. The second air guide channel 31 provided in the positioning section 302 is located on the side of the limiting ring 303 facing away from the guiding section 301.

[0091] In order to enable the suction cup body 1 to more accurately pull the part from the guiding section 301 of the positioning pin 3 to the positioning section 302, in some embodiments, the suction cup body 1 can be arranged adjacent to the positioning pin 3. At this time, the first communication hole 212 and the first mounting hole 213 respectively used to connect the suction cup body 1 and the positioning pin 3 are arranged adjacent to each other on the mounting surface 22.

[0092] In other embodiments, the positioning pin 3 can also be arranged to pass through the suction cup body 1. At this time, the positioning pin 3 can better guide the part to move under the pulling of the suction cup body 1 in close contact with it, further increasing the tolerance of the positioning error of the positioning component for the part and helping to improve the success rate of accurate positioning of the positioning component.

[0093] Considering that the part needs to be in close contact with the suction cup body 1 to ensure that the space formed between the part and the suction cup body 1 is in a sealed state. And the part needs to be passed through the positioning pin 3 through the positioning hole. To avoid the positioning hole affecting the sealing performance of the space between the suction cup body 1 and the part, in some embodiments, the above-mentioned suction cup body 1 is a double-wall suction cup.

[0094] Please refer to Figure 3 , Figure 11 and Figure 12, the sucker wall 11 includes an inner wall 111 and an outer wall 112 arranged in a nested manner. An annular cavity is provided between the inner wall 111 and the outer wall 112, and the annular cavity communicates with the first air guide channel 21. When the sucker body 1 is connected to the part to be processed, the above-mentioned annular cavity can just avoid the positioning hole formed on the part. At this time, the positioning pin 3 fixed on the mounting seat 2 penetrates through the sucker body 1 and at least a part of the guiding section 301 of the positioning pin 3 extends outward relative to the sucker body 1.

[0095] When the part is connected to the positioning pin 3 through the positioning hole, the above-mentioned sucker wall 11 can just avoid the positioning hole and be attached to the lower surface of the part. At this time, the annular cavity is in a sealed state.

[0096] Specifically, the above-mentioned inner wall 111 and outer wall 112 are arranged in a nested manner, and their structures are both similar to corrugated pipes, and are formed by sequentially connecting a plurality of annular foldable corrugated sheets along the folding and telescoping direction of the sucker wall 11. Among them, the radial dimension of the outer wall 112 is larger than that of the inner wall 111 to form an annular cavity for accommodating gas between the two.

[0097] The above-mentioned inner wall 111 and outer wall 112 are both tubular elastic sensitive elements with a certain height in the radial direction, and can quickly fold and contract in a negative pressure environment, and pull the part adsorbed and connected with them to move downward synchronously.

[0098] In order to facilitate the installation of the sucker body 1 on the mounting seat 2, in some embodiments, it is provided that the sucker body 1 further includes a bottom wall 12 connecting the inner wall 111 and the outer wall 112. An air hole 121 is provided on the bottom wall 12, and the first air guide channel 21 is connected to the air hole 121. Please refer to Figure 12 , the number of the above-mentioned air holes 121 is multiple and is arranged in a ring shape and evenly on the annular bottom wall 12.

[0099] Correspondingly, the number of the first communication holes 212 in the first air guide channel 21 is also multiple and is arranged in one-to-one correspondence with the air holes 121, so as to facilitate the gas in the sucker body 1 to flow to the first air guide channel 21 through the air holes 121 and the first communication holes 212.

[0100] It can be understood that the positioning components provided by the embodiments of the present application can enable the parts to be precisely positioned to move to the set position along the positioning pin 3 under the pulling of the suction cup body 1 by utilizing the characteristics that the suction cup wall 11 in the suction cup body 1 can be folded and contracted through the mutually conductive suction cup body 1, mounting seat 2 and positioning pin 3. Among them, the suction cup body 1 can be connected to the second air guide channel 31 located in the positioning pin 3 through the first air guide channel 21, and the second air guide channel 31 can be connected to a negative pressure generating component. When the foldable suction cup wall 11 fits with the parts to be precisely positioned, the negative pressure generating element 4 causes a negative pressure to be formed inside the suction cup wall 11. At this time, the suction cup wall 11 can be folded and contracted under the action of the negative pressure and then pull the parts to move along the positioning pin 3 to the positioning section 302 of the positioning pin 3 to achieve precise positioning of the parts.

[0101] In a second aspect, an embodiment of the present application provides a stamping device, including the positioning component described in any one of the above.

[0102] The stamping device provided by the embodiment of the present application includes the above positioning component. Therefore, the beneficial effects of the stamping device including any one or several of the above positioning components will not be elaborated herein.

[0103] Before the stamping device stamps the parts, the suction cup body 1 in the positioning component can pull the parts to move along the positioning pin 3 under the action of negative pressure and fit with the corresponding die surface to achieve precise positioning of the parts in the die cavity. In the subsequent stamping process, the die closes, and the die surface stamps the parts to obtain stamped parts that meet the design requirements.

[0104] Of course, it can be understood that in other embodiments, the above positioning component can also be applied to processing technologies other than stamping that require precise positioning of parts, such as welding, assembly, and cutting.

[0105] The descriptions of the above embodiments tend to emphasize the differences between the embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they will not be elaborated herein.

[0106] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning component, characterized in that, Comprising: A suction cup body having a suction cup wall for folding and contracting under pressure; A mounting base provided with a first air guide channel, and the suction cup body is fixedly mounted on the mounting base and communicated with the first air guide channel; A positioning pin provided with a second air guide channel for connecting a negative pressure generating element; When the positioning pin is connected to the mounting base, the first air guide channel is communicated with the second air guide channel.

2. The positioning component according to claim 1, wherein The end face of the mounting base is a mounting surface, and the suction cup body is connected to the mounting base through the mounting surface; The first air guide channel includes a first air guide cavity, a first communication hole and a first mounting hole. The first air guide cavity is arranged in the mounting base, and both the first communication hole and the first mounting hole are arranged on the mounting surface; The suction cup body is communicated with the first air guide cavity through the first communication hole, and the positioning pin is connected to the mounting base through the first mounting hole.

3. The positioning component according to claim 2, wherein The first mounting hole is axially penetrated through the mounting base; When the positioning pin is inserted through the mounting base through the first mounting hole, the second air guide channel communicates with the first air guide cavity.

4. The positioning component according to claim 3, wherein The mounting base includes a detachable base and an end cover. The first communication hole is arranged in one of the base and the end cover, and the number of the first mounting holes is two and are respectively arranged on the base and the end cover; When the base and the end cover are connected, the first air guide cavity is located between the base and the end cover.

5. The positioning component according to claim 3, wherein The positioning pin includes a guiding section and a positioning section arranged axially, and the second air guide channel is arranged in the positioning section; The positioning section is inserted through the mounting base through the first mounting hole.

6. The positioning component according to claim 5, characterized in that, The second air guide channel includes a second air guide cavity, a second communication hole and a second mounting hole. The second air guide cavity is arranged in the positioning section, the second communication hole is arranged on the circumferential side wall of the positioning section, and the second mounting hole is arranged on the side of the positioning section facing away from the guiding section; When the positioning pin is connected to the mounting base, the second communication hole communicates the first air guide cavity and the second air guide cavity, and the second mounting hole is located outside the mounting base.

7. The positioning component according to claim 6, characterized in that, The second mounting hole is arranged at one end of the positioning pin in the axial direction.

8. The positioning component according to claim 5, characterized in that External threads are provided on the positioning section, and internal threads are provided on the first mounting hole, and the positioning section is threadedly connected to the first mounting hole.

9. The positioning component according to any one of claims 1-8, characterized in that, The suction cup wall includes an inner wall and an outer wall arranged in a nested manner, and an annular cavity is arranged between the inner wall and the outer wall, and the annular cavity is communicated with the first air guide channel; The positioning pin passes through the suction cup body and is connected to the mounting base.

10. A stamping device, characterized in that, Comprising the positioning assembly according to any one of claims 1-9.

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