Pressing and positioning device

Abstract

The present invention discloses a pressing and positioning device, which relates to the technical field of material processing and positioning. The pressing and positioning device includes a mounting base, an inner support assembly and a pressing assembly. The inner support assembly includes a plurality of support parts provided on the mounting base. The plurality of support parts are arranged along a circumferential direction to jointly define a mounting channel. The plurality of support parts can move in directions away from or close to each other, so as to jointly abut against the inner wall of the shell to be processed or separate from the shell to be processed during the movement process. The pressing assembly includes a plurality of pressing parts provided on the mounting base. The lower ends of the plurality of pressing parts are arranged in the mounting channel, and the upper ends protrude upward from the plurality of support parts and can move in directions away from or close to each other. The upper ends of the plurality of pressing parts can protrude from the support parts in a direction away from the mounting channel and downwardly abut against the abutting surface of the shell to be processed, or separate from the shell to be processed. By continuously applying a downward pressure by the pressing parts and combining with the inner support effect, the stability of material processing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of material processing positioning, and particularly to a pressing and positioning device. Background Art

[0002] When processing the outer surface of shell-like materials, such as cutting, due to high requirements for the appearance of the materials, they are generally clamped and positioned by tightening the inner wall. However, this clamping method depends on the accuracy of manual feeding. During the tightening moment, the material is prone to slight vibration, resulting in position deviation and affecting the processing accuracy. At the same time, during the processing, when the cutting force is large, the material may be slightly lifted by the tool, leading to large fluctuations in the processing size and poor stability. Summary of the Invention

[0003] The main object of the present invention is to propose a pressing and positioning device, aiming to position the shell-like material through a combination of inner support and downward pressure, thereby avoiding the vibration phenomenon of the material during the tightening process and improving the stability of the material during the processing.

[0004] To achieve the above object, the present invention proposes a pressing and positioning device, including:

[0005] A mounting seat;

[0006] An inner support assembly, including a plurality of support portions provided on the mounting seat. The plurality of support portions are arranged along a circumferential direction to jointly define an installation channel. The plurality of support portions can move in directions away from or towards each other, so as to jointly abut against the inner wall of the shell to be processed or separate from the shell to be processed during the movement; and,

[0007] A pressing assembly, including a plurality of pressing portions provided on the mounting seat. The lower ends of the plurality of pressing portions are provided in the installation channel, and the upper ends protrude upward from the plurality of support portions and can move in directions away from or towards each other. During the movement, the upper ends of the plurality of pressing portions can move in a direction away from the installation channel to protrude from the support portions and downwardly abut against the abutting surface of the shell to be processed, or the upper ends of the plurality of pressing portions can also move to separate from the shell to be processed.

[0008] In an embodiment, the pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing portions. The first driving structure includes:

[0009] A first connecting rod, the upper end of the first connecting rod extends into the installation channel and is connected to the pressing portion. The middle part of the first connecting rod is connected to the mounting seat through a first rotating shaft; and,

[0010] The first driving part is fixed to the mounting seat and is drivingly connected to the lower end of the first connecting rod to drive the upper end of the first connecting rod to swing.

[0011] In one embodiment, the first driving part has a driving shaft that moves in the up-and-down direction, and the driving shaft is located outside the inner support assembly;

[0012] An arc-shaped hole is provided in the middle of the first connecting rod, and the arc-shaped hole is inclined upward from bottom to the middle of the installation channel for the first rotating shaft to pass through;

[0013] The first driving structure further includes a second connecting rod extending in the horizontal direction. The middle of the second connecting rod is connected to the mounting seat through a second rotating shaft, one end is hinged to the driving shaft, and the other end is hinged to the lower end of the first connecting rod.

[0014] In one embodiment, the thickness of the part of the first connecting rod corresponding to the arc-shaped hole is greater than the thickness of the end of the first connecting rod.

[0015] In one embodiment, a plurality of accommodating grooves are formed on the upper end surface of the mounting seat, and the plurality of accommodating grooves are used to correspondingly accommodate the plurality of second connecting rods.

[0016] In one embodiment, a positioning hole extending in the radial direction of the installation channel is provided at the upper end of the first connecting rod, and a positioning post protrudes from the pressing part corresponding to the positioning hole, and the positioning post passes through the positioning hole; and / or,

[0017] The first connecting rod and the pressing part are fixed by a screw member.

[0018] In one embodiment, the pressing part is provided with a step, so as to have a step surface facing downward, and the step surface is used to abut against the mating surface of the shell to be processed.

[0019] In one embodiment, the inner support assembly further includes a second driving structure, and the second driving structure includes:

[0020] A plurality of movable parts, corresponding to the plurality of supporting parts one by one. The upper end of each movable part is connected to the supporting part. The plurality of movable parts have a tightened position where they are in contact with each other, and a spreading position where they are away from each other to drive the plurality of supporting parts to move into contact with the shell to be processed. In the tightened position, the plurality of movable parts are in contact with each other to jointly form an annular structure. The inner hole of the annular structure corresponds to the installation channel, and the inner hole of the annular structure is gradually expanded from top to bottom to form a guiding inclined surface; and,

[0021] A second driving part is located below the plurality of supporting parts and has a stroke of moving in the vertical direction. The outer shape of the second driving part is adapted to the guiding inclined surface and can contact the guiding inclined surface during the movement of the second driving part to drive the plurality of movable parts to be converted from the tightened position to the expanded position.

[0022] In one embodiment, the inner support assembly further includes a base fixed to the mounting seat, wherein:

[0023] The plurality of movable parts are made of an elastically deformable material, and the lower ends of the plurality of movable parts are all fixed to the base so as to be deformed by an external force when the second driving part contacts the guiding inclined surface and drive the supporting parts to move; and / or,

[0024] The plurality of movable parts and the base are integrally formed.

[0025] In one embodiment, a relief groove communicating with the inner hole of the annular structure is recessed at the lower end of the base, wherein:

[0026] The second driving part movably penetrates through the relief groove; and / or,

[0027] The pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing parts, and at least a part of the plurality of first driving structures is located in the relief groove.

[0028] In one embodiment, the pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing parts. Each first driving structure includes a first connecting rod, and the plurality of first connecting rods in the plurality of first driving structures are arranged around the periphery of the second driving part.

[0029] In one embodiment, the supporting part and the movable part are detachably connected.

[0030] In one embodiment, the second driving structure further includes a linear driving mechanism having a main shaft that moves in the vertical direction;

[0031] The second driving part is detachably connected to the upper end of the main shaft.

[0032] In one embodiment, the plurality of pressing parts are driven to move by a first driving structure, and the plurality of supporting parts are driven to move by a second driving structure. Among them, the driving force of the second driving structure is greater than the driving force of the first driving structure. A supporting plate for providing support for an article;

[0033] In the technical solution of the present invention, the mounting base serves as a support foundation, and both the supporting portion and the pressing portion are movable relative to the mounting base. During the positioning process of the housing to be processed, the movement of multiple supporting portions realizes the inner support and release of the housing to be processed, and the movement of multiple pressing portions realizes the downward pressing and release of the abutting surface of the housing to be processed. Therefore, when positioning the product, a downward pressure can be continuously applied through multiple pressing portions, and the inner support effect of multiple supporting portions is combined to improve the stability of the material, thereby solving the problems of material vibration and inaccurate manual picking and placing in the existing positioning method, improving the accuracy and consistency of the process processing, and ultimately realizing the improvement of the process yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on the structures shown in these drawings without creative efforts.

[0035] Figure 1 FIG. is a schematic structural diagram of an embodiment of the pressing and positioning device provided by the present invention;

[0036] Figure 2 is Figure 1 a schematic structural diagram of the cooperation between the first driving structure and the second driving structure in;

[0037] Figure 3 is Figure 1 a schematic cross-sectional view of the pressing portion abutting against the housing to be processed in;

[0038] Figure 4 is Figure 1 a schematic cross-sectional view of the supporting portion abutting against the housing to be processed in.

[0039] Explanation of the reference numerals in the drawings:

[0040] 100, pressing and positioning device; 1, mounting base; 111, receiving groove; 112, support pillar; 2, inner support assembly; 20, mounting channel; 21, supporting portion; 22, first driving structure; 221, first connecting rod; 2211, arc-shaped hole; 222, first driving portion; 223, first rotating shaft; 224, second connecting rod; 225, second rotating shaft; 3, pressing assembly; 31, pressing portion; 311, stepped surface; 32, second driving structure; 320, guiding inclined surface; 321, movable portion; 322, second driving portion; 323, base; 3231, avoidance groove; 324, linear driving mechanism.

[0041] The realization of the object, functional characteristics and advantages of the present invention will be further described with reference to the embodiments and the drawings. Detailed implementation mode

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] It should be noted that if there are directional indications involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] When a machining center performs external cutting on shell-like materials, especially when it comes to the last process of shell-like materials, since the materials are almost formed and have high requirements for appearance, the industry generally uses the method of tightening the inner wall for clamping and machining. However, this method relies on manual feeding. The material is prone to slight tremors during the tightening moment. At the same time, the force direction of the material during the machining process is single. When the cutting force is large, the material may be slightly lifted, resulting in large fluctuations in machining dimensions and poor stability. In addition, due to the small inner cavity of the material and strict appearance requirements, how to effectively increase the pressing force has always been a technical difficulty, and no ideal solution has been found yet.

[0046] The shell-like material targeted by the present invention is a material with a certain inner cavity, and the inner cavity of the material should also form a supporting surface arranged upward. The shell-like material can be a regular or irregular structure, and the inner supporting surface can be annular or strip-shaped. For example, a kind of shell material has a T-shaped groove structure in its inner cavity, so it has an annular inner wall and a supporting surface arranged upward. In the accompanying drawings of this embodiment, a metal watch case is used as an example to show the cooperation of the pressing and positioning device.

[0047] Please refer to Figures 1 to 2, the clamping and positioning device 100 includes a mounting base 1, an inner support assembly 2 and a clamping assembly 3. The inner support assembly 2 includes a plurality of support portions 21 provided on the mounting base 1. The plurality of support portions 21 are arranged along a circumferential direction to jointly define a mounting channel 20. The plurality of support portions 21 can move in a direction away from or towards each other, so as to jointly abut against the inner wall of the shell to be processed or separate from the shell to be processed during the movement process; the clamping assembly 3 includes a plurality of clamping portions 31 provided on the mounting base 1. The lower ends of the plurality of clamping portions 31 are arranged in the mounting channel 20, and the upper ends protrude upward from the plurality of support portions 21 and can move in a direction away from or towards each other. During the movement process, the upper ends of the plurality of clamping portions 31 can protrude from the support portions 21 in a direction away from the mounting channel 20 and press downward against the abutting surface of the shell to be processed or separate from the shell to be processed.

[0048] In the technical solution of the present invention, the mounting base 1 serves as a support foundation. Both the support portions 21 and the clamping portions 31 are movable relative to the mounting base 1. During the positioning process of the shell to be processed, the movement of the plurality of support portions 21 realizes the inner support and release of the shell to be processed, and the movement of the plurality of clamping portions 31 realizes the downward pressing and release of the abutting surface of the shell to be processed. Therefore, when positioning the product, the plurality of clamping portions 31 can continuously apply a downward pressure, and the inner support effect of the plurality of support portions 21 is combined to improve the stability of the material, thereby solving the problems of material vibration and inaccurate manual picking and placing in the existing positioning method, thereby improving the accuracy and consistency of the process processing, and finally realizing the improvement of the process yield.

[0049] Specifically, the upper ends of the plurality of clamping portions 31 can move in a direction away from the mounting channel 20, that is, the plurality of clamping portions 31 move in a direction away from the center line of the mounting channel 20.

[0050] The plurality of support portions 21 and / or the plurality of clamping portions 31 can achieve active synchronous movement through an electric drive structure, or can achieve passive synchronous movement through a mechanical structure under the action of an external force. It should be understood that the plurality of support portions 21 and / or the plurality of clamping portions 31 can be synchronously driven by one driving device through a transmission structure, or can be synchronously driven by a plurality of driving devices by setting a program.

[0051] The outer shape of the support portion 21 should be able to adapt to the cavity wall of the shell to be processed. For example, if the shell to be processed has an annular inner wall, the wall surface of the support portion 21 in contact with the shell to be processed should be correspondingly arc-shaped. The overall outer contour of the support portion 21 can be adapted to the inner contour of the shell to be processed, so that the entire outer side surface of the support portion 21 is attached to the inner wall of the shell to be processed. The support portion 21 can also be set as a partially protruding structure, and only the protruding part is attached to the inner wall of the shell to be processed, which can be reasonably designed according to the size of the shell to be processed.

[0052] It should be understood that the supporting part 21 and the pressing part 31 act on the housing to be processed at different positions. Therefore, the numbers of the two can be the same or different. When the supporting part 21 and the pressing part 31 are in contact with the housing to be processed, they can be arranged in a circumferentially staggered manner, so as to adapt to the working condition with a relatively small internal space of the housing to be processed.

[0053] In this embodiment, the pressing assembly 3 further includes a plurality of first driving structures 22 corresponding to the plurality of pressing parts 31. The first driving structure 22 includes a first connecting rod 221 and a first driving part 222. The upper end of the first connecting rod 221 extends into the installation channel 20 and is connected to the pressing part 31. The middle part of the first connecting rod 221 is connected to the installation seat 1 through a first rotating shaft 223; the first driving part 222 is fixed to the installation seat 1 and is drivingly connected to the lower end of the first connecting rod 221 to drive the upper end of the first connecting rod 221 to swing. In this embodiment, a connecting rod structure is adopted to drive the pressing part 31. During the driving process, the middle part of the first connecting rod 221 is rotationally matched with the first rotating shaft 223. Due to the fixed connection relationship between the first rotating shaft 223 and the installation seat 1, when the lower end of the first connecting rod 221 is driven to rotate, the upper end can swing in an arc around the position where the first rotating shaft 223 is located, thereby driving the pressing part 31 to swing. By driving the first connecting rod 221 in different swinging directions, the switching of the spreading and gathering movement trends of the plurality of pressing parts 31 can be realized, so as to meet the design requirements.

[0054] The structural form of the connecting rod cooperation has a relatively long transmission distance of force. The first connecting rod 221 only occupies a certain space in the height direction and occupies a relatively small space in the radial direction of the installation channel 20. Therefore, it can adapt to the working condition with limited dimensions of the installation channel 20.

[0055] It should be understood that the first driving part 222 can drive the first connecting rod 221 to swing. Therefore, it can be set as a linear driving form such as a cylinder, or can be set as a structural form of a motor cooperating with a transmission part. In this embodiment, the first driving part 222 is set as a cylinder.

[0056] Considering that the size of the watch case material itself is relatively small, it is difficult for the first driving part 222 to be accommodated in the installation channel 20. Therefore, considering the position limitation of the deviation between the first driving part 222 and the first connecting rod 221, in some embodiments, the first driving part 222 has a driving shaft that moves in the up and down direction, and the first driving part 222 and the driving shaft are located outside the inner support assembly 2; an arc-shaped hole 2211 is provided in the middle of the first connecting rod 221, and the arc-shaped hole 2211 is inclined upward from bottom to top towards the middle of the installation channel 20 for the first rotating shaft 223 to pass through; the first driving structure 22 further includes a second connecting rod 224 extending in the horizontal direction. The middle of the second connecting rod 224 is connected to the mounting seat 1 through a second rotating shaft 225, one end is hinged to the driving shaft, and the other end is hinged to the lower end of the first connecting rod 221. Through the cooperation of the first connecting rod 221 and the second connecting rod 224, the direction of the driving force is adjusted, and the second connecting rod 224 can realize the transmission connection between the first connecting rod 221 and the driving shaft. Specifically, the second connecting rod 224 extends in the horizontal direction, its middle part is rotationally matched with the second rotating shaft 225, and the ends are hinged. The second rotating shaft 225 is relatively fixed to the mounting seat 1. Therefore, when the driving shaft moves up and down, the two ends of the second connecting rod 224 swing up and down around the position where the second rotating shaft 225 is located, forming a structure similar to a lever. During the swinging process of the second connecting rod 224, the lower end of the first connecting rod 221 is driven to move, so that the first connecting rod 221 and the first rotating shaft 223 move relative to each other, and the first rotating shaft 223 can slide in the arc-shaped hole 2211, thereby realizing the swinging of the upper end of the first connecting rod 221. The driving form of the connecting rod cooperation can not only have a longer force arm, but also realize the conversion of the driving force direction, and at the same time can reduce the occupied space.

[0057] Please refer to Figure 2 , in the initial position, the first rotating shaft 223 is located at the lower end of the arc-shaped hole 2211. At this time, the plurality of pressing parts 31 are in positions close to each other. When the air cylinder is lifted, please refer to Figure 3 , at this time, the first rotating shaft 223 is at the upper end of the arc-shaped hole 2211, and at this time, the plurality of pressing parts 31 abut against the material.

[0058] Considering that the arc-shaped hole 2211 has a certain size, the thickness of the part of the first connecting rod 221 corresponding to the arc-shaped hole 2211 is greater than the thickness of the end of the first connecting rod 221. Thus, the structural strength of the middle position of the first connecting rod 221 is ensured.

[0059] Moreover, when setting the thickness of the first connecting rod 221, the connection strength, structural strength and small volume setting should be considered. Therefore, in the direction from bottom to top, the middle thickness of the first connecting rod 221 is greater than the lower thickness and greater than the upper thickness.

[0060] Both ends of the first rotating shaft 223 and the second rotating shaft 225 are fixed on the mounting base 1 through the support columns 112, and the middle parts are passed through the holes on the corresponding connecting rods to achieve rotational cooperation. The setting of the support columns 112 can adapt to different designed heights of the rotating shafts.

[0061] It should be noted that the middle part mentioned in this embodiment corresponds to the middle area of the connecting rod, rather than being limited to the middle line position. For example, for the second connecting rod 224, according to the design requirements of the force arm, the second rotating shaft 225 can correspond to the middle of the second connecting rod 224 and be arranged close to the first connecting rod 221, that is, the distances between the second rotating shaft 225 and the two hinge ends of the second connecting rod 224 are different.

[0062] Further, please refer to again Figure 1 , a plurality of receiving grooves 111 are formed on the upper end surface of the mounting base 1, and the plurality of receiving grooves 111 are used for receiving the plurality of second connecting rods 224. The receiving grooves 111 can be arranged to penetrate in the up and down direction. Figure 1 In the embodiment of

[0063] In order to prevent the connecting rod from moving during the driving process and affecting the positioning accuracy with the pressing part 31, in some embodiments, a positioning hole extending in the radial direction of the installation channel 20 is provided at the upper end of the first connecting rod 221, and a positioning post protrudes from the pressing part 31 corresponding to the positioning hole. The positioning post passes through the positioning hole, and the relative position between the pressing part 31 and the first connecting rod 221 is limited by the form of inserting and matching the positioning hole and the positioning post to achieve limiting, and at the same time, it is convenient for installation guidance.

[0064] In other embodiments, the first connecting rod 221 and the pressing part 31 are fixed by screw connectors. Thus, the connection strength between the two is ensured.

[0065] In this embodiment, the first connecting rod 221 and the pressing part 31 are first positioned and matched through the positioning hole and the positioning post, and then locked by screw connectors. The screw connectors and the positioning hole are spaced in the up and down direction, so as to be able to limit the position of the pressing part 31.

[0066] Not only that, please refer to again Figure 2 , the pressing part 31 is provided with a step, so as to have a step surface 311 arranged downward, and the step surface 311 is used to abut against the mating surface of the shell to be processed. That is, the pressing part 31 is integrally in a block structure, and the width dimension of the upper end is larger than that of the lower end, so as to form a downward step surface 311, so as to be able to abut against the abutting surface of the shell to be processed and achieve the pressing effect.

[0067] In this embodiment, the pressing portion 31 is formed with a first step surface 311 and a second step surface 311 that are spaced apart in the vertical direction and staggered in the horizontal direction. The first step surface 311 cooperates with the housing to be processed, and the second step surface 311 cooperates with the upper end surface of the first connecting rod 221, thereby ensuring good installation and cooperation effects.

[0068] In other embodiments, the plurality of pressing portions 31 can also achieve the actions of abutting and tightening through a structure combining vertical driving and horizontal driving. The present invention does not elaborate on this.

[0069] The present invention does not limit that the driving and cooperation form of the plurality of supporting portions 21 can be achieved through a sliding cooperation structure of a sliding groove and a slider. In some embodiments, the inner support assembly 2 further includes a second driving structure 32. The second driving structure 32 includes a plurality of movable portions 321 and a second driving portion 322. The plurality of movable portions 321 correspond to the plurality of supporting portions 21 one by one. The upper ends of the respective movable portions 321 are connected to the supporting portions 21. The plurality of movable portions 321 have a tightened position where they are in contact with each other, and a spread position where they are away from each other to drive the plurality of supporting portions 21 to move to contact the housing to be processed. In the tightened position, the plurality of movable portions 321 are in contact with each other to jointly form an annular structure. The inner hole of the annular structure corresponds to the installation channel 20. The inner hole of the annular structure is gradually expanded from top to bottom to form a guiding inclined surface 320. The second driving portion 322 is located below the plurality of supporting portions 21 and has a stroke of moving in the vertical direction. The outer shape of the second driving portion 322 is adapted to the guiding inclined surface 320, and during the movement of the second driving portion 322, it can contact the guiding inclined surface 320 to drive the plurality of movable portions 321 to switch from the tightened position to the spread position. In the initial state, the plurality of movable portions 321 are in the tightened position. When the second driving portion 322 moves upward, its outer periphery contacts the guiding inclined surface 320. Based on the form of inclined surface cooperation, as the second driving portion 322 moves upward, the inner hole of the annular structure is squeezed, so that the plurality of movable portions 321 expand outward until they reach the spread position, thereby driving the supporting portions 21 to contact the housing to be processed.

[0070] In the above embodiments, the movable portion 321 is connected to the supporting portion 21, which can facilitate the miniaturization and square setting of the supporting portion 21. The plurality of movable portions 321 can be driven by one driving portion, ensuring good synchronism. At the same time, the supporting portion 21 and the movable portion 321 can be detachably connected. When dealing with different products, the supporting portion 21 can be replaced for adaptation.

[0071] For the reset of the multiple movable parts 321, it can be manually reset after the second driving part 322 falls. In some embodiments, the inner support assembly 2 further includes a base 323 fixed to the mounting seat 1. The materials of the multiple movable parts 321 are elastically deformable materials. The lower ends of the multiple movable parts 321 are all fixed to the base 323 to drive the support part 21 to move under the action of external force deformation when the second driving part 322 contacts the guiding inclined surface 320. At this time, the movable part 321 is made of an elastically deformable material and can deform when subjected to the driving force of the second driving part 322 so as to drive the support part 21 to move. After the external force is removed, it can be reset by relying on its elastic force. This structural form can eliminate the need to set up relevant structures for linear guidance, save the number of parts, and simplify the structural form.

[0072] Furthermore, the multiple movable parts 321 and the base 323 are integrally formed. In this embodiment, the base 323 and the movable part 321 are integrally formed and made of spring steel. The upper part of the spring steel is cut to form multiple movable parts 321, and the lower part serves as the base 323. That is, the spring steel is not completely cut through. It should be understood that the movement stroke of the multiple movable parts 321 is affected by the cutting length of the spring steel and the effective matching height between the guiding inclined surface 320 and the second driving part 322.

[0073] Based on the above embodiment, the connection position between the movable part 321 and the base 323 is below the first rotating shaft 223, so as to ensure the outward expansion stroke after deformation.

[0074] Please refer to Figure 3 , a relief groove 3231 communicating with the inner hole of the annular structure is recessed at the lower end of the base 323. The relief groove 3231 forms a sunken structure and can serve as a receiving space for arranging corresponding structures. In one embodiment, the second driving part 322 movably passes through the relief groove 3231. It should be understood that when the movable part 321 and the base 323 are set as an integral deformation part, a relief hole should be correspondingly provided at the upper end of the deformation part for the first connecting rod 221 to pass through. In another embodiment, the pressing assembly 3 further includes a plurality of first driving structures 22 corresponding to the plurality of pressing parts 31, and at least part of the plurality of first driving structures 22 is located in the relief groove 3231.

[0075] Specifically, a part of the first connecting rod 221, the second driving part 322, and a part of the support column 112 are all accommodated in the relief groove 3231, which can not only ensure the structural compactness, rationally utilize the space, but also hide the parts, ensure the appearance is neat, and facilitate the observation of the product.

[0076] In terms of spatial layout, the pressing assembly 3 further includes a plurality of first driving structures 22 corresponding to the plurality of pressing parts 31. Each first driving structure 22 includes a first connecting rod 221, and the plurality of first connecting rods 221 in the plurality of first driving structures 22 are arranged around the periphery of the second driving part 322. Such an arrangement can ensure that the driving activities of related components do not interfere with each other and can also achieve space utilization.

[0077] It should be understood that considering the wear of parts, the second driving structure 32 further includes a linear driving mechanism 324. The linear driving mechanism 324 has a main shaft that moves up and down. The linear driving mechanism 324 can be set as a cylinder. At this time, the cylinder rod can correspondingly serve as the main shaft. The second driving part 322 is detachably connected to the upper end of the main shaft, so that the second driving part 322 can be replaced. It should be understood that the second driving part 322 is a block structure with a columnar side surface. The entire side surface of the second driving part 322 can be set to be inclined to match the guiding inclined surface 320, or the upper end of the second driving part 322 can be set to be inclined. The present invention does not limit this, and it can be reasonably matched according to the actual working conditions.

[0078] It should be noted that the plurality of pressing parts 31 are driven to move by the first driving structure 22, and the plurality of supporting parts 21 are driven to move by the second driving structure 32. Among them, the driving force of the second driving structure 32 is greater than that of the first driving structure 22. That is, during the product positioning process, the inner support effect of the plurality of supporting parts 21 plays a major role in positioning the product and can fix the product. The downward pressing action of the plurality of pressing parts 31 is auxiliary, mainly to prevent the material from moving. If the driving force of the pressing part 31 is too large, it is easy to damage the internal structure of the housing.

[0079] Take Figures 3 to 4 the embodiment of

[0080] An inner support seat made of spring steel is provided. The inner support seat is formed into a base 323 and a plurality of movable parts 321 through local segmentation, and the elastic deformation is used to realize the clamping of the material during picking and placing. A profiling insert is provided as the supporting part 21 and fixed on the movable part 321. Three cylinders are provided. The movable part 321 is deformed by the force through the middle cylinder and the push rod. A stepped pressing part 31 is provided, and the swing drive is realized through the cooperation of the outer cylinder and the corresponding connecting rod, which can change the direction of the driving force and transmit the driving force through the lever structure. Each connecting rod only retains one degree of rotational freedom through the first rotating shaft 223 and the second rotating shaft 225. The specific working steps are as follows:

[0081] Material placement: The middle cylinder is in the initial state, at which point the second drive portion 322 is at the bottom of the avoidance groove 3231, and the plurality of support portions 21 are not subjected to the tightening force, thus maintaining a tightened state. The outer cylinder is also in the initial state, the first rotating shaft 223 is at the lower end of the arc groove, and the outer ends of the plurality of holding portions 31 are retracted, and the shell to be processed can be placed at this time.

[0082] Press down and clamp: After the material is placed, the outer cylinder pushes up, and provides a downward pulling force for the bottom of the first connecting rod 221 through the second rotating shaft 225 and the second connecting rod 224 during the swinging process. After the bottom is pulled down, it cooperates with the upper arc groove and the first rotating shaft 223, so that the first rotating shaft 223 is converted to the upper end position of the arc groove. The first connecting rod 221 can drive the pressing part 31 to press down into the T-shaped groove in the inner cavity of the shell and abut against the abutting surface of the shell to ensure that the material is clamped in place and continuously provide downward pressure.

[0083] Material support: After the downward clamping action is completed, the middle cylinder is ventilated, and the cylinder piston rod is pushed out, driving the second drive part 322 to push up, acting on the guide slope 320 of the inner support seat, and the multiple movable parts 321 are stretched open. At this time, the multiple support parts 21 can be supported internally while keeping the material compressed, thereby avoiding the vibration of the material during the support process. Since the internal support force of the multiple support parts 21 is greater than the downward lateral component of the holding part 31, the material is finally supported and fixed.

[0084] The technical solution of the present invention can be applied to the internal support processing of most shell materials and has a wide range of applicability. The downward pressing action solves the problem of manual placement and ensures that the material can be placed accurately. The holding portion 31 continuously applies downward pressure during the processing, which improves the stability of the material and prevents the material from moving or deforming during the processing. Through the coordination of the above-mentioned structures, the processing accuracy and consistency of the process are improved, and the processing error is reduced. The process yield is improved, and the production efficiency and product quality are improved.

[0085] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A pressing and positioning device, the housing to be processed has an inner cavity, and the inner cavity of the housing to be processed forms a supporting surface arranged upward, characterized in that, The holding and positioning device includes: A mounting base; An inner support assembly, including a plurality of support portions provided on the mounting base. The plurality of support portions are arranged along a circumferential direction to jointly define a mounting channel. The plurality of support portions can move in a direction away from or close to each other, so as to jointly abut against the inner wall of the shell to be processed or separate from the shell to be processed during the movement; and, A pressing assembly, including a plurality of pressing portions provided on the mounting base. The lower ends of the plurality of pressing portions are provided in the mounting channel, and the upper ends protrude upward from the plurality of support portions and can move in a direction away from or close to each other. During the movement, the upper ends of the plurality of pressing portions can move in a direction away from the mounting channel to protrude from the support portions and press downward against the abutting surface of the shell to be processed. Or, the upper ends of the plurality of pressing portions can also move to separate from the shell to be processed. The pressing assembly further includes a plurality of first driving structures. The first driving structure includes a first connecting rod. The upper end of the first connecting rod extends into the mounting channel and is connected to the pressing portion. The middle part of the first connecting rod is connected to the mounting base through a first rotating shaft; Wherein, the plurality of support portions and the plurality of pressing portions both extend into the inner cavity of the shell to be processed. After the plurality of pressing portions press the abutting surface of the shell to be processed, the plurality of support portions tighten the inner wall of the shell to be processed, and the inner support force of the plurality of support portions is greater than the downward lateral component force of the pressing portion; The inner support assembly further includes a second driving structure. The second driving structure includes a plurality of movable portions and a second driving portion. The plurality of movable portions correspond to the plurality of support portions one by one. The upper end of each movable portion is connected to the support portion. The plurality of movable portions have a tightened position where they are in contact with each other and a spread position where they move away from each other to drive the plurality of support portions to move into contact with the shell to be processed. In the tightened position, the plurality of movable portions are in contact with each other to jointly form an annular structure. The inner hole of the annular structure corresponds to the mounting channel. The inner hole of the annular structure is gradually enlarged from top to bottom to form a guiding inclined surface. The second driving portion is located below the plurality of support portions and has a stroke of moving in the vertical direction. The outer shape of the second driving portion is adapted to the guiding inclined surface and can contact the guiding inclined surface during the movement of the second driving portion to drive the plurality of movable portions to switch from the tightened position to the spread position; The plurality of movable portions and the base are provided as an integral deformable component. An avoidance hole should be correspondingly provided at the upper end of the deformable component for the first connecting rod to pass through, and the connection position between the movable portion and the base is below the first rotating shaft.

2. The holding and positioning device according to claim 1, wherein The first driving structure further includes a first driving portion. The first driving portion is fixed to the mounting base and is drivingly connected to the lower end of the first connecting rod to drive the upper end of the first connecting rod to swing.

3. The pressing and positioning device according to claim 2, characterized in that, The first driving portion has a driving shaft that moves in the vertical direction. The driving shaft is located outside the inner support assembly; An arc-shaped hole is provided in the middle part of the first connecting rod. The arc-shaped hole is inclined upward from bottom to top toward the middle part of the mounting channel for the first rotating shaft to pass through; The first driving structure further includes a second connecting rod extending in the horizontal direction. The middle part of the second connecting rod is connected to the mounting seat through a second rotating shaft, one end is hinged to the driving shaft, and the other end is hinged to the lower end of the first connecting rod.

4. The holding and positioning device according to claim 3, characterized in that, The thickness of the part of the first connecting rod corresponding to the arc-shaped hole is greater than the thickness of the end part of the first connecting rod.

5. The holding and positioning device according to claim 3, wherein A plurality of accommodating grooves are formed on the upper end surface of the mounting seat, and the plurality of accommodating grooves are correspondingly used for accommodating the plurality of second connecting rods.

6. The holding and positioning device according to claim 2, wherein A positioning hole extending in the radial direction of the mounting channel is provided at the upper end of the first connecting rod, and a positioning post is protruded on the pressing part corresponding to the positioning hole, and the positioning post is inserted into the positioning hole; and / or, The first connecting rod and the pressing part are fixed by a screwing member.

7. The holding and positioning device according to claim 1, wherein, The pressing part is provided with a step so as to have a step surface arranged downward, and the step surface is used for abutting against the mating surface of the shell to be processed.

8. The holding and positioning device according to claim 1, wherein, The inner support assembly further includes a base fixed to the mounting seat, wherein: The plurality of movable parts are made of an elastically deformable material, and the lower ends of the plurality of movable parts are all fixed to the base so as to drive the support part to move when being deformed by an external force when the second driving part contacts the guiding inclined surface.

9. The holding and positioning device according to claim 8, wherein A relief groove communicating with the inner hole of the annular structure is recessed at the lower end of the base, wherein: The second driving part movably penetrates through the relief groove; and / or, The pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing parts, and at least a part of the plurality of first driving structures is located in the relief groove.

10. The holding and positioning device according to claim 1, wherein The pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing parts, and each first driving structure includes a first connecting rod, and the plurality of first connecting rods in the plurality of first driving structures are arranged around the periphery of the second driving part.

11. The holding and positioning device according to claim 1, characterized in that, The plurality of pressing parts are driven to move by the first driving structure, and the plurality of support parts are driven to move by the second driving structure, wherein the driving force of the second driving structure is greater than the driving force of the first driving structure.

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