Pressing and holding positioning device

Abstract

The invention discloses a hold-down positioning device, and relates to the technical field of material processing and positioning, the hold-down positioning device comprises a mounting seat, an inner support assembly and a hold-down assembly, the inner support assembly comprises a plurality of support parts arranged on the mounting seat, the plurality of support parts are arranged along a circumferential direction to jointly define a mounting channel, the multiple supporting parts can move in the direction away from each other or close to each other so as to jointly abut against the inner wall of the shell to be machined or be separated from the shell to be machined in the moving process. The pressing assembly comprises a plurality of pressing parts arranged on the mounting base, the lower ends of the multiple pressing parts are arranged in the mounting channel, the upper ends of the multiple pressing parts upwards protrude out of the multiple supporting parts, and the multiple pressing parts can move in the directions away from each other or close to each other; the upper ends of the multiple pressing parts can protrude out of the supporting part in the direction opposite to the mounting channel and abut against the abutting face of the shell to be machined downwards or be separated from the shell to be machined. And downward pressure is continuously applied through the pressing part, and the stability of material processing is improved in combination with the inner supporting effect.

Description

Technical Field

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

[0002] When processing the outer surface of shell materials, such as cutting, the appearance of the material is highly required, so it is usually clamped and positioned by tightening the inner wall. However, this clamping method relies on the accuracy of manual feeding, and the material is prone to slight vibration at the moment of tightening, resulting in positional deviation, 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, resulting in large fluctuations in the processing size and poor stability. Summary of the invention

[0003] The main purpose of the present invention is to propose a holding and positioning device, which aims to position shell materials by combining internal support and downward pressure, thereby avoiding vibration 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 provides a pressing and positioning device, comprising: Mounting seat; An inner support assembly, comprising a plurality of support parts provided on the mounting seat, the plurality of support parts being arranged along a circumferential direction to jointly define a mounting channel, the plurality of support parts being able to move in a direction away from or approaching each other, so as to jointly press against an inner wall of a shell to be processed, or separate from the shell to be processed during the movement; and The pressing assembly includes a plurality of pressing parts arranged on the mounting seat, wherein 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 supporting parts, and can move in directions away from or approaching each other. During the movement, the upper ends of the plurality of pressing parts can move in a direction away from the mounting channel to protrude from the supporting parts and downwardly press against the holding surface of the shell to be processed, or the upper ends of the plurality of pressing parts can also move to be separated from the shell to be processed.

[0005] In one embodiment, the pressing assembly further includes a plurality of first driving structures arranged corresponding to the plurality of pressing parts, and the first driving structures include: A first connecting rod, the upper end of which extends into the installation channel and is connected to the holding portion, and the middle portion of the first connecting rod is connected to the installation seat through a first rotating shaft; and 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.

[0006] In one embodiment, the first driving part has a driving shaft movable in the up-down direction, and the driving shaft is located outside the inner support assembly; An arc-shaped hole is provided in the middle of the first connecting rod, and the arc-shaped hole is inclined from bottom to top toward the middle of the installation channel for the first rotating shaft to pass through; The first driving structure also 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 of the second connecting rod is hinged to the driving shaft, and the other end is hinged to the lower end of the first connecting rod.

[0007] In one embodiment, a thickness of a portion of the first connecting rod corresponding to the arc-shaped hole is greater than a thickness of an end portion of the first connecting rod.

[0008] 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 accommodate a plurality of the second connecting rods.

[0009] 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, a positioning column is protruded on the pressing portion corresponding to the positioning hole, and the positioning column is inserted into the positioning hole; and / or, The first connecting rod and the pressing portion are fixed via a screw connection.

[0010] In one embodiment, the pressing portion is arranged in a stepped manner to have a step surface arranged downward, and the step surface is used to press against the matching surface of the shell to be processed.

[0011] In one embodiment, the inner support assembly further includes a second driving structure, and the second driving structure includes: A plurality of movable parts corresponding to the plurality of supporting parts one by one, the upper end of each movable part being connected to the supporting part, the plurality of movable parts having a tightening position in contact with each other, and a spreading position away from each other to drive the plurality of supporting parts to move to contact with the shell to be processed, in the tightening position, the plurality of movable parts are in contact with each other to form an annular structure, the inner hole of the annular structure corresponds to the mounting channel, and the inner hole of the annular structure is gradually expanded from top to bottom to form a guiding inclined surface; and, The second driving part is located below the multiple supporting parts and has a travel range in the up and down directions. The shape of the second driving part is adapted to the guide slope. During the movement of the second driving part, it can contact the guide slope to drive the multiple movable parts to switch from the tightening position to the expanding position.

[0012] In one embodiment, the inner support assembly further comprises a base fixed to the mounting seat, wherein: The material of the plurality of movable parts is an elastically deformable material, and the lower ends of the plurality of movable parts are fixed to the base, so that when the second driving part contacts the guide inclined surface, the supporting part is deformed by an external force and driven to move; and / or, The plurality of movable parts are integrally formed with the base.

[0013] In one embodiment, a relief groove is recessed at the lower end of the base and communicates with the inner hole of the annular structure, wherein: The second driving part is movably arranged in the avoidance groove; and / or, The pressing assembly further includes a plurality of first driving structures arranged corresponding to the plurality of pressing portions, and at least a portion of the plurality of first driving structures is located in the avoidance groove.

[0014] In one embodiment, the pressing assembly further includes a plurality of first driving structures arranged corresponding to the plurality of pressing parts, each of the first driving structures includes a first connecting rod, and a plurality of the first connecting rods in the plurality of the first driving structures are arranged around the periphery of the second driving part.

[0015] In one embodiment, the supporting portion is detachably connected to the movable portion.

[0016] In one embodiment, the second drive structure further comprises a linear drive mechanism having a main shaft movable in the up-down direction; The second driving part is detachably connected to the upper end of the main shaft.

[0017] In one embodiment, the plurality of pressing parts are driven by a first driving structure, and the plurality of supporting parts are driven by a second driving structure, wherein the driving force of the second driving structure is greater than the driving force of the first driving structure. The support plate is used to provide support for the article; In the technical solution of the present invention, the mounting seat serves as a supporting base, and the supporting part and the pressing part are both movable relative to the mounting seat. In the process of positioning the shell to be processed, the activities of the multiple supporting parts realize the internal support and release of the shell to be processed, and the activities of the multiple pressing parts realize the downward pressure and release of the supporting surface of the shell to be processed. Therefore, when the product is positioned, the downward pressure can be continuously applied by the multiple pressing parts, and the internal support effect of the multiple supporting parts is combined to improve the stability of the material, thereby solving the problems of material vibration and manual placement in the existing positioning method, thereby improving the accuracy and consistency of the process processing, and finally achieving the improvement of the process yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of a pressing and positioning device provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure in which the first driving structure and the second driving structure cooperate; Figure 3 for Figure 1 A cross-sectional schematic diagram of the middle pressure holding portion abutting against the shell to be processed; Figure 4 for Figure 1 A schematic cross-sectional view of the middle support portion against which the shell to be processed is abutted.

[0020] Description of Figure Numbers: 100. Pressing and positioning device; 1. Mounting seat; 111. Accommodating groove; 112. Pillar; 2. Internal support assembly; 20. Mounting channel; 21. Support portion; 22. First driving structure; 221. First connecting rod; 2211. Arc hole; 222. First driving portion; 223. First rotating shaft; 224. Second connecting rod; 225. Second rotating shaft; 3. Pressing assembly; 31. Pressing portion; 311. Step surface; 32. Second driving structure; 320. Guide slope; 321. Movable portion; 322. Second driving portion; 323. Base; 3231. Avoidance groove; 324. Linear driving mechanism.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] 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 used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] When the machining center performs external cutting of shell materials, especially when it comes to the last process of shell materials, since the materials are close to forming and have high requirements for appearance, the industry generally adopts the method of clamping and processing by tightening the inner wall. However, this method relies on manual loading, and the material is prone to slight vibration at the moment of tightening. At the same time, the force direction of the material during the processing is single. When the cutting force is large, the material may be slightly lifted, resulting in large fluctuations in the processing size and poor stability. In addition, since the inner cavity of the material is small and the appearance requirements are strict, how to effectively increase the holding force has always been a technical difficulty, and an ideal solution has not yet been found.

[0026] The shell material targeted by the present invention is a material with a certain inner cavity, and the inner cavity of the material should also form an upwardly disposed abutting surface. The shell material can be a regular or irregular structure, and the inner abutting surface can be annular or strip-shaped. For example, a shell material has an inner cavity with a T-shaped groove structure, and thus has an annular inner wall and an upwardly disposed abutting surface. The accompanying drawings of this embodiment take a metal watch case as an example to illustrate the cooperation of the pressing and positioning device.

[0027] Please refer to Figure 1 to Figure 2 The pressing and positioning device 100 includes a mounting seat 1, an inner support assembly 2 and a pressing assembly 3. The inner support assembly 2 includes a plurality of support portions 21 provided on the mounting seat 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 approaching each other, so that they can jointly press against the inner wall of the shell to be processed, or separate from the shell to be processed during the movement; the pressing assembly 3 includes a plurality of pressing portions 31 provided on the mounting seat 1. The lower ends of the plurality of pressing portions 31 are provided 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 approaching each other. During the movement, the upper ends of the plurality of pressing portions 31 can protrude from the support portions 21 in a direction away from the mounting channel 20 and press downward against the holding surface of the shell to be processed, or separate from the shell to be processed.

[0028] In the technical solution of the present invention, the mounting seat 1 serves as a supporting base, and the supporting part 21 and the holding part 31 are both movable relative to the mounting seat 1. During the positioning of the shell to be processed, the movement of the multiple supporting parts 21 realizes the internal support and release of the shell to be processed, and the movement of the multiple holding parts 31 realizes the downward pressure and release of the supporting surface of the shell to be processed. Therefore, when the product is positioned, the downward pressure can be continuously applied by the multiple holding parts 31. Combined with the internal support effect of the multiple supporting parts 21, the stability of the material is improved, thereby solving the problems of material vibration and manual placement in the existing positioning method, thereby improving the accuracy and consistency of the process processing, and finally achieving the improvement of the process yield.

[0029] Specifically, the upper ends of the plurality of pressing portions 31 can move in a direction away from the installation channel 20 , that is, the plurality of pressing portions 31 can move in a direction away from the center line of the installation channel 20 .

[0030] The multiple support parts 21 and / or the multiple holding parts 31 can realize active synchronous movement through the electric drive structure, or can realize passive synchronous movement under the action of external force through the mechanical structure. It should be understood that the multiple support parts 21 and / or the multiple holding parts 31 can be synchronously driven by a driving device through a transmission structure, or can be synchronously driven by setting a program of multiple driving devices.

[0031] 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 is an annular inner wall, the wall surface of the support portion 21 in contact with the shell to be processed should be set in an arc shape. The outer contour of the support portion 21 can be adapted to the inner contour of the shell to be processed as a whole, so that the entire outer side surface of the support portion 21 fits with 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 fits with the inner wall of the shell to be processed. Specifically, it can be reasonably designed according to the size of the shell to be processed.

[0032] It should be understood that the supporting portion 21 and the pressing portion 31 have different action positions on the shell to be processed, so the number of the two can be the same or different. When the supporting portion 21 and the pressing portion 31 are in contact with the shell to be processed, the two can be staggered in the circumferential direction, so as to adapt to the working condition where the internal space of the shell to be processed is smaller.

[0033] In this embodiment, the pressing assembly 3 also includes a plurality of first driving structures 22 arranged 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 mounting channel 20 and is connected to the pressing part 31, and the middle part of the first connecting rod 221 is connected to the mounting base 1 through the first rotating shaft 223; the first driving part 222 is fixed to the mounting base 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. This embodiment adopts a connecting rod structure to drive the holding part 31. During the driving process, the middle part of the first connecting rod 221 rotates with the first rotating shaft 223. Due to the fixed connection relationship between the first rotating shaft 223 and the mounting base 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 of the first rotating shaft 223, thereby driving the holding part 31 to swing. By driving the first connecting rod 221 in different swinging directions, the diffusion and gathering activity trends of multiple holding parts 31 can be switched, thereby meeting the design requirements.

[0034] The force transmission distance of the connecting rod matching structure is longer. The first connecting rod 221 only occupies a certain space in the height direction and occupies a smaller space in the radial direction of the installation channel 20. Therefore, it can adapt to the working condition where the size of the installation channel 20 is limited.

[0035] It should be understood that the first driving part 222 can drive the first connecting rod 221 to swing, so it can be set to a linear drive form such as a cylinder, or it can be set to a structural form in which a motor and a transmission part cooperate. In this embodiment, the first driving part 222 is set to a cylinder.

[0036] Considering the small size of the case material itself, it is difficult for the first driving part 222 to be accommodated in the installation channel 20. Therefore, considering the position limit 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-down direction, and the first driving part 222 and the driving shaft are located on the outside of the inner support assembly 2; the middle part of the first connecting rod 221 is provided with an arc hole 2211, and the arc hole 2211 is inclined from bottom to top toward the middle part of the installation channel 20 for the first rotating shaft 223 to pass through; the first driving structure 22 also includes a second connecting rod 224 extending in the horizontal direction, the middle part of the second connecting rod 224 is connected to the mounting seat 1 through the 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. The first connecting rod 221 and the second connecting rod 224 cooperate to adjust the direction of the driving force, 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, the middle part thereof is rotationally matched with the second rotating shaft 225, the end part is hingedly matched, and 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 are made to swing up and down around the position where the second rotating shaft 225 is located, forming a lever-like structure. 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 hole 2211, thereby realizing the swinging of the upper end of the first connecting rod 221. The driving form of connecting rod matching can have a long force arm, realize the conversion of the driving force direction, and reduce the occupied space.

[0037] Please refer to Figure 2 In the initial position, the first rotating shaft 223 is located at the lower end of the arc hole 2211. At this time, the plurality of holding portions 31 are close to each other. When the cylinder is lifted, please refer to Figure 3 At this time, the first rotating shaft 223 is at the upper end of the arc hole 2211, and the plurality of pressing parts 31 are in contact with the material.

[0038] Considering that the arc-shaped hole 2211 has a certain size, the thickness of the portion 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 portion of the first connecting rod 221 is ensured.

[0039] Moreover, when setting the thickness of the first connecting rod 221, the connection strength, structural strength and small volume setting should be considered, so in the direction from bottom to top, the middle thickness of the first connecting rod 221 is greater than the thickness of the lower end and greater than the thickness of the upper end.

[0040] Both ends of the first rotating shaft 223 and the second rotating shaft 225 are fixed on the mounting base 1 through the support 112, and the middle part is passed through the hole on the corresponding connecting rod to achieve rotational cooperation. The setting of the support 112 can adapt to different design heights of the rotating shaft.

[0041] It should be noted that the middle part mentioned in this embodiment corresponds to the middle area of ​​the connecting rod, and is not limited to the center line position. For example, for the second connecting rod 224, according to the design requirements of the lever arm, the second rotating shaft 225 can correspond to the middle part of the second connecting rod 224 and be arranged close to the first connecting rod 221, that is, the distance between the second rotating shaft 225 and the two hinged ends of the second connecting rod 224 is different.

[0042] For further information, please refer again Figure 1 The upper end surface of the mounting seat 1 is provided with a plurality of receiving grooves 111, and the plurality of receiving grooves 111 are used to receive a plurality of second connecting rods 224. The receiving grooves 111 may be arranged through the vertical direction. Figure 1 In the embodiment, the accommodating groove 111 is arranged in a "T" shape, and the second connecting rod 224 and the hinge rod of the driving shaft can be accommodated by relying on the inner wall of the accommodating groove 111, so as to facilitate the rational use of space.

[0043] In order to prevent the connecting rod from moving with the holding part 31 during driving and affecting the positioning accuracy, 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 column is protruding from the corresponding positioning hole on the holding part 31, and the positioning column is passed through the positioning hole. The relative position of the holding part 31 and the first connecting rod 221 is limited by the insertion and cooperation of the positioning hole and the positioning column, thereby realizing positioning and facilitating installation guidance.

[0044] In other embodiments, the first connecting rod 221 and the pressing portion 31 are fixed by a screw connection, thereby ensuring the connection strength between the two.

[0045] In this embodiment, the first connecting rod 221 and the holding portion 31 are first positioned and matched through the positioning hole and the positioning column, and then locked by a screw connection. The screw connection and the positioning hole are spaced in the vertical direction, so as to limit the position of the holding portion 31.

[0046] Furthermore, please refer to Figure 2 The pressing part 31 is arranged in a stepped manner, so as to have a stepped surface 311 arranged downward, and the stepped surface 311 is used to abut against the matching surface of the shell to be processed. That is, the pressing part 31 is a block-shaped structure as a whole, and the width dimension of the upper end is greater than the width dimension of the lower end, thereby forming a stepped surface 311 arranged downward, so that it can abut against the abutting surface of the shell to be processed to achieve a downward pressing effect.

[0047] In this embodiment, the holding portion 31 is formed with a first step surface 311 and a second step surface 311 which are spaced apart in the vertical direction and staggered in the horizontal direction. The first step surface 311 cooperates with the shell to be processed, and the second step surface 311 cooperates with the upper end surface of the first connecting rod 221, thereby ensuring a good installation and matching effect.

[0048] In other embodiments, the plurality of holding portions 31 may also achieve the holding and tightening actions through a structure combining up-and-down drive and horizontal drive, which will not be described in detail in the present invention.

[0049] The present invention does not limit the driving cooperation form of the multiple support parts 21 to be realized by the sliding cooperation structure of the slide slot slider. In some embodiments, the inner support assembly 2 also includes a second driving structure 32, and the second driving structure 32 includes a plurality of movable parts 321 and a second driving part 322. The plurality of movable parts 321 correspond to the plurality of support parts 21 one by one, and the upper end of each movable part 321 is connected to the support part 21. The plurality of movable parts 321 have a tightening position that fits each other, and a support position that moves away from each other to drive the plurality of support parts 21 to move to a supporting position that contacts the shell to be processed. In the tightening position, the multiple movable parts 321 fit together to form an annular structure, the inner hole of the annular structure corresponds to the installation channel 20, and the inner hole of the annular structure is gradually expanded from top to bottom to form a guide slope 320; the second driving part 322 is located below the multiple supporting parts 21, and has a stroke that moves in the up and down directions. The shape of the second driving part 322 is adapted to the guide slope 320, and can contact the guide slope 320 during the activity of the second driving part 322 to drive the multiple movable parts 321 from the tightening position to the expanded position. In the initial state, the multiple movable parts 321 are in the tightening position, and the second driving part 322 moves up so that its outer periphery contacts the guide slope 320. Based on the form of the inclined surface matching, as the second driving part 322 moves up, the inner hole of the annular structure is squeezed so that the multiple movable parts 321 expand outward until they reach the expanded position, thereby driving the supporting part 21 to contact the shell to be processed.

[0050] In the above-mentioned embodiment, the movable part 321 is connected to the supporting part 21, which can facilitate the miniaturization and square setting of the supporting part 21. Multiple movable parts 321 can be driven by one driving part to ensure good synchronization. At the same time, the supporting part 21 and the movable part 321 can be detachably connected, and when dealing with different products, adaptation can be achieved by replacing the supporting part 21.

[0051] The multiple movable parts 321 can be reset manually after the second driving part 322 falls back. In some embodiments, the inner support assembly 2 also includes a base 323 fixed to the mounting seat 1, wherein the multiple movable parts 321 are made of elastically deformable material, and the lower ends of the multiple movable parts 321 are fixed to the base 323, so that when the second driving part 322 contacts the guide slope 320, the support part 21 is deformed by external force and moves; at this time, the movable part 321 is set to be an elastically deformable material, and can be deformed when receiving the driving force of the second driving part 322, so as to achieve the effect of driving the position of the support part 21. After the external force is removed, it can be reset by relying on its elastic force. This structural form does not need to set the relevant structure of the linear guide, saves the number of parts, and simplifies the structural form.

[0052] Furthermore, the plurality of movable parts 321 are integrally formed with the base 323. 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 the plurality of 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 movable travel of the plurality of movable parts 321 is affected by the cutting length of the spring steel and the effective matching height of the guide slope 320 and the second drive part 322.

[0053] Based on the above embodiment, the connection position between the movable portion 321 and the base 323 is located below the first rotating shaft 223, so as to ensure the outward expansion stroke after deformation.

[0054] Please refer to Figure 3 The lower end of the base 323 is recessed with an avoidance groove 3231 that communicates with the inner hole of the annular structure. The avoidance groove 3231 forms a sink structure and can be used as a space for accommodating corresponding structures. In one embodiment, the second driving part 322 is movably arranged in the avoidance groove 3231. It should be understood that when the movable part 321 and the base 323 are configured as an integral deformation component, the upper end of the deformation component should be correspondingly provided with an avoidance hole for the first connecting rod 221 to pass through. In another embodiment, the holding assembly 3 further includes a plurality of first driving structures 22 correspondingly arranged with the plurality of holding parts 31, and at least part of the plurality of first driving structures 22 is located in the avoidance groove 3231.

[0055] Specifically, part of the first connecting rod 221, the second driving part 322, and part of the support 112 are all accommodated in the avoidance groove 3231, which can not only ensure a compact structure and rational use of space, but also hide components to ensure a neat appearance and facilitate observation of the product.

[0056] In terms of spatial layout, the pressing assembly 3 further includes a plurality of first driving structures 22 arranged corresponding to the plurality of pressing parts 31, each of the first driving structures 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 the related components will not interfere with each other and can realize space utilization.

[0057] It should be understood that, considering the wear of parts, the second drive structure 32 also includes a linear drive mechanism 324, which has a main shaft that moves in the up and down directions. The linear drive mechanism 324 can be set as a cylinder, in which case the cylinder rod can be used as the main shaft. The second drive part 322 is detachably connected to the upper end of the main shaft, so that the second drive part 322 can be replaced. It should be understood that the second drive part 322 is a block structure with a columnar side surface. The entire side surface of the second drive part 322 can be set to be inclined to match the guide slope 320, or the upper end of the second drive 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.

[0058] It should be noted that the multiple holding parts 31 are driven to move by the first driving structure 22, and the multiple supporting parts 21 are driven to move by the second driving structure 32, wherein the driving force of the second driving structure 32 is greater than the driving force of the first driving structure 22. That is, in the process of positioning the product, the inner support effect of the multiple supporting parts 21 plays the main role in positioning the product and can fix the product, and the downward pressure of the multiple holding parts 31 is auxiliary, mainly to prevent the material from moving. If the driving force of the holding part 31 is too large, it is easy to cause damage to the internal structure of the shell.

[0059] by Figure 3 to Figure 4 The structure of the device is described by taking the embodiment of FIG. 1 as an example.

[0060] An inner support seat made of spring steel is provided, which is partially divided to form a base 323 and multiple movable parts 321, and uses elastic deformation to achieve material placement and clamping. A contoured insert is provided as a support part 21 fixed on the movable part 321, and three cylinders are provided. The movable part 321 is deformed by force through the movement of the middle cylinder and the push rod. A step-shaped holding part 31 is provided, and the swing drive is achieved 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. Through the first rotating shaft 223 and the second rotating shaft 225, each connecting rod only retains one degree of rotational freedom. The specific working steps are as follows: 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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, characterized in that: include: Mounting seat; An inner support assembly, comprising a plurality of support parts provided on the mounting seat, the plurality of support parts being arranged along a circumferential direction to jointly define a mounting channel, the plurality of support parts being able to move in a direction away from or approaching each other, so as to jointly press against an inner wall of a shell to be processed, or separate from the shell to be processed during the movement; and The pressing assembly includes a plurality of pressing parts arranged on the mounting seat, wherein 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 supporting parts, and can move in directions away from or approaching each other. During the movement, the upper ends of the plurality of pressing parts can move in a direction away from the mounting channel to protrude from the supporting parts and downwardly press against the holding surface of the shell to be processed, or the upper ends of the plurality of pressing parts can also move to be separated from the shell to be processed.

2. The pressing and positioning device according to claim 1, characterized in that: The pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing parts, wherein the first driving structures include: A first connecting rod, the upper end of which extends into the installation channel and is connected to the holding portion, and the middle portion of the first connecting rod is connected to the installation seat through a first rotating shaft; and 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.

3. The pressing and positioning device according to claim 2, characterized in that: The first driving part has a driving shaft movable in the up-down direction, and the driving shaft is located outside the inner support assembly; An arc-shaped hole is provided in the middle of the first connecting rod, and the arc-shaped hole is inclined from bottom to top toward the middle of the installation channel for the first rotating shaft to pass through; The first driving structure also 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 of the second connecting rod is hinged to the driving shaft, and the other end is hinged to the lower end of the first connecting rod.

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

5. The pressing and positioning device according to claim 3, characterized in that: The upper end surface of the mounting seat is provided with a plurality of accommodating grooves, and the plurality of accommodating grooves are used for correspondingly accommodating a plurality of the second connecting rods.

6. The pressing and positioning device according to claim 2, characterized in that: The upper end of the first connecting rod is provided with a positioning hole extending in the radial direction of the installation channel, and the holding portion is provided with a positioning column corresponding to the positioning hole, and the positioning column is inserted into the positioning hole; and / or, The first connecting rod and the pressing portion are fixed via a screw connection.

7. The pressing and positioning device according to claim 1, characterized in that: The pressing portion is arranged in a stepped manner to have a step surface arranged downward, and the step surface is used to press against the matching surface of the shell to be processed.

8. The pressing and positioning device according to claim 1, characterized in that: The inner support assembly further includes a second driving structure, and the second driving structure includes: A plurality of movable parts corresponding to the plurality of supporting parts one by one, the upper end of each movable part being connected to the supporting part, the plurality of movable parts having a tightening position in contact with each other, and a spreading position away from each other to drive the plurality of supporting parts to move to contact with the shell to be processed, in the tightening position, the plurality of movable parts are in contact with each other to form an annular structure, the inner hole of the annular structure corresponds to the mounting channel, and the inner hole of the annular structure is gradually expanded from top to bottom to form a guiding inclined surface; and, The second driving part is located below the multiple supporting parts and has a travel range in the up and down directions. The shape of the second driving part is adapted to the guide slope. During the movement of the second driving part, it can contact the guide slope to drive the multiple movable parts to switch from the tightening position to the expanding position.

9. The pressing and positioning device according to claim 8, characterized in that: The inner support assembly also includes a base fixed to the mounting seat, wherein: The material of the plurality of movable parts is an elastically deformable material, and the lower ends of the plurality of movable parts are fixed to the base, so that when the second driving part contacts the guide inclined surface, the supporting part is deformed by an external force and driven to move; and / or, The plurality of movable parts are integrally formed with the base.

10. The pressing and positioning device according to claim 9, characterized in that: The lower end of the base is recessed with an avoidance groove communicating with the inner hole of the annular structure, wherein: The second driving part is movably arranged in the avoidance groove; and / or, The pressing assembly further includes a plurality of first driving structures arranged corresponding to the plurality of pressing portions, and at least a portion of the plurality of first driving structures is located in the avoidance groove.

11. The pressing and positioning device according to claim 8, characterized in that: The pressing assembly further includes a plurality of first driving structures corresponding to the plurality of pressing parts, each of the first driving structures includes a first connecting rod, and a plurality of the first connecting rods in the plurality of the first driving structures are arranged around the periphery of the second driving part.

12. The pressing and positioning device according to claim 1, characterized in that: 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, wherein the driving force of the second driving structure is greater than the driving force of the first driving structure.

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