A kind of orthopedic fixture for special-shaped parts

Abstract

The utility model relates to the technical field of orthopedic components, and specifically is an orthopedic fixture for special-shaped parts. The utility model includes an upper base plate and a lower base plate that are distributed in parallel and fixed to each other by fixing buckles. The box plate parts are positioned and clamped between the upper base plate and the lower base plate. The upper base plate and the lower base plate are respectively penetrated by an upper correction slide and a lower correction slide that slide along the vertical direction. When the outer ends of the upper correction slide and the lower correction slide are pressed, the inner ends of the upper correction slide and the lower correction slide slide inward to a set limit position to squeeze the deformed part of the box plate part, thereby correcting it to a standard state. The utility model can cooperate with special-shaped parts so that the special-shaped parts can be corrected efficiently and at low cost in a traditional leveling machine.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic components, in particular to an orthopedic fixture for special-shaped parts. Background Art

[0002] The leveler uses the "Bauschinger effect" of the material to bend the plate repeatedly, gradually reducing the bending deflection, gradually changing multiple original curvatures into a single curvature, and leveling it to achieve the flatness accuracy required by the process. The deformation of the plate-type structure is recorded in the text of a roller leveler with a Chinese patent publication number of CN113027854B and the text of a steel plate leveler with a Chinese patent publication number of CN116637960B.

[0003] Leveling machines have significant effects in the correction of flat plates. However, for special-shaped parts with uneven surfaces, such as battery boxes, some structures in the box plates are welded to the box plates by stir friction welding. During the stir friction welding process, the box plates will deform in local areas due to the presence of heat input. Obviously, such special-shaped parts cannot be corrected by leveling machines. At present, the correction of such special-shaped parts mostly relies on cumbersome manual correction methods, or the costly method of repurchasing new correction equipment. Obviously, the above methods all have shortcomings. Therefore, how to achieve efficient and low-cost correction of special-shaped parts through traditional leveling machines is currently an urgent problem to be solved. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a special-shaped part correction fixture, which can cooperate with the special-shaped part so that the special-shaped part can be corrected efficiently and at low cost in a traditional leveling machine.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A corrective fixture for special-shaped parts includes an upper base plate and a lower base plate which are distributed in parallel and fixed to each other by fixing buckles. The box plate parts are positioned and clamped between the upper base plate and the lower base plate. An upper correction slide and a lower correction slide are respectively slid through the upper base plate and the lower base plate in the vertical direction. When the outer ends of the upper correction slide and the lower correction slide are pressurized, the inner ends of the upper correction slide and the lower correction slide slide inward to a set limit position to squeeze the deformed part of the box plate parts, thereby correcting them to a standard state.

[0007] As a further solution of the utility model: the upper correction slide and the lower correction slide are both axial structures whose axes are distributed in the vertical direction, and the outer ends of the upper correction slide and the lower correction slide are both detachably fixed with pressure heads, and the inner ends of the pressure heads abut against the upper substrate or the lower substrate, thereby positioning the set limit position of the upper correction slide or the lower correction slide.

[0008] As a further solution of the utility model: the upper and lower correction slides are both sleeved on their axial bodies with middle guide sleeves respectively fixed to the lower surface of the upper base plate and the upper surface of the lower base plate, the upper and lower correction slides are both sleeved on their axial bodies with return springs that squeeze them to produce an outward sliding movement, and the upper and lower correction slides are both provided with protrusions on their axial bodies for positioning their outer end positions.

[0009] As a further solution of the utility model: a lengthening guide sleeve fixedly connected to the lower base plate is sleeved on the rod body adjacent to the inner end portion of the lower correction slide.

[0010] As a further solution of the utility model: in a top view, the upper correction slides and the lower correction slides are arranged as a plurality of dot matrix distributions, and along the movement direction of the orthotic fixture in the correction machine, the spacing between the axes of adjacent upper correction slides and the spacing between the axes of adjacent lower correction slides are both 45 mm, and the upper correction slides and the lower correction slides correspond to each other one by one or are horizontally offset by 22.5 mm, and the outer ends of all the upper correction slides are flush, and the outer ends of all the lower correction slides are flush.

[0011] As a further solution of the utility model: at least one product guide column is arranged on the top surface of the lower base plate at each side of the box board part, and all the product guide columns enclose a guide cavity for guiding the box board parts to slide along the vertical direction, and product clamping components are fixed on the upper and lower base plates to prevent the box board parts from moving in the vertical direction.

[0012] As a further solution of the utility model: the product clamping assembly includes a lower corner clamping block and a lower internal clamping block fixed on the lower base plate, and the product clamping assembly also includes an upper corner clamping block and an upper internal clamping block fixed on the upper base plate. The lower corner clamping blocks and the upper corner clamping blocks are arranged into four groups distributed at the corners of the box board parts to clamp the four corners of the box board parts; the lower internal clamping blocks and the upper internal clamping blocks are arranged into several groups corresponding to each other and distributed in the middle part of the box board parts to clamp the middle part of the box board parts.

[0013] As a further solution of the utility model: a positioning pin which is plug-fitted with an existing shaped hole on the box plate part is fixed on the top surface of the lower base plate.

[0014] As a further solution of the utility model: at least one substrate positioning column is fixedly connected to each of the four sides of the top of the lower substrate to locate the distance between the lower substrate and the upper substrate.

[0015] As a further solution of the utility model: a substrate guide assembly for positioning and assembling each other is arranged between the upper substrate and the lower substrate, and the substrate guide assembly includes a substrate guide column fixed to the top surface of the lower substrate and a substrate guide sleeve arranged on the upper substrate and plugged into the substrate guide column.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. Clamp the box plate parts in the corrective fixture, send the corrective fixture into the traditional leveling machine, and then use the upper roller and the lower roller in the leveling machine to squeeze the outer ends of the upper and lower corrective slides inward respectively; after the outer ends of the upper and lower corrective slides are pressed, the inner ends of the upper and lower corrective slides slide inward to the set limit position, and the upper and lower corrective slides slide inward to collide with the box plate parts and squeeze the deformed parts of the box plate parts, so that the deformed parts of the box plate parts are corrected to the standard state, thereby realizing efficient and low-cost correction of special-shaped parts in the traditional leveling machine.

[0018] 2. The outer ends of the upper and lower correction slides can be detachably fixed with a pressure head, and the inner end of the pressure head abuts against the upper base plate or the lower base plate, thereby positioning the set limit position of the upper or lower correction slide. In actual implementation, by replacing pressure heads of different shapes, the set limit position of the upper or lower correction slide can be adjusted according to different needs.

[0019] 3. The upper and lower correction slides tend to slide outward under the action of the return spring in the non-working state, so that the upper and lower correction slides are often separated from the box plate parts in the initial non-working state. Therefore, during the correction process, the upper and lower correction slides will be squeezed and pushed to collide with the box plate parts, and then squeeze the box plate parts for correction, so that when the correction fixture moves in the leveling machine, the upper and lower correction slides can achieve correction actions similar to continuous hammering. Compared with direct compression correction throughout the whole process, it is easier to correct the box plate parts to the standard state.

[0020] 4. The axial distance between the upper and lower corrective slides is 45mm. Therefore, no matter the standard diameter of the rollers in the leveling machine is mostly 42mm, 88mm or 120mm, when the corrective fixture is transported to the leveling machine, the rollers located directly above or below the corrective fixture will not have a situation where part of the rollers are in contact with the upper or lower corrective slide, while the other part of the rollers cannot act on the upper or lower corrective slide. This ensures the synchronization of the force applied to the equally spaced upper or lower corrective slides, thereby making the force applied to the box panel parts more uniform, and ultimately improving the corrective effect of the box panel parts.

[0021] 5. The product guide column is used to enclose and form a guide cavity for guiding the sliding of the box plate parts in the vertical direction. The guide cavity can facilitate the rapid positioning of the placement of the box plate parts and limit the box plate parts from sliding horizontally or rotating around the vertical axis. In addition, the upper and lower base plates are fixed with product clamping components that prevent the box plate parts from moving vertically. After the upper and lower base plates are fixed to each other, the box plate parts can be clamped, thereby preventing the box plate parts from shaking during the correction process and causing additional deformation.

[0022] 6. At least one substrate positioning column is fixedly connected to each of the four sides of the top of the lower substrate to locate the distance between the lower substrate and the upper substrate, thereby preventing the extrusion force exerted on the upper and lower substrates in the leveling machine from being transmitted to the box plate parts, thereby preventing damage to the uneven parts in the plate structure of the box plate parts under standard conditions.

[0023] 7. A substrate guide assembly is provided between the upper substrate and the lower substrate for positioning and assembling each other, making the assembly between the upper substrate and the lower substrate more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the lower substrate in the utility model.

[0026] Figure 3 It is a schematic diagram of the structure of the upper substrate in the utility model when viewed from above.

[0027] Figure 4 It is a structural schematic diagram of the connection between the upper base plate and the upper orthopedic slide in the utility model.

[0028] Figure 5 It is a structural schematic diagram of the connection between the lower base plate and the lower orthopedic slide in the utility model.

[0029] Figure 6 It is a schematic diagram of the distribution structure of the utility model and the leveling machine roller with a standard diameter of 88mm.

[0030] Figure 7 It is a schematic diagram of the distribution structure of the utility model and the leveling machine roller with a standard diameter of 120 mm.

[0031] Figure 8 It is a schematic diagram of the distribution structure of the utility model and the leveling machine roller with a standard diameter of 42 mm.

[0032] Fig. 9 It is a schematic diagram of the connection structure between the utility model and the box plate parts.

[0033] Fig.10 It is a schematic diagram of the structure of the box panel parts to be corrected.

[0034] In the figure: 10, upper base plate; 20, lower base plate; 30, positioning pin; 40, base plate guide assembly; 41, base plate guide column; 42, base plate guide sleeve; 50, fixing buckle; 60, product guide column; 70, product clamping assembly; 71a, lower corner clamping block; 71b, lower internal clamping block; 72a, upper corner clamping block; 72b, upper internal clamping block; 80, base plate positioning column; 90a, upper correction slide; 90b, lower correction slide; 91, pressure head; 92, middle guide sleeve; 93, gasket; 94, return spring; 95, protrusion; 96, extension guide sleeve; A, box plate parts; A1, mold hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] For ease of understanding, the specific structure and working mode of the utility model are further described below in conjunction with the accompanying drawings:

[0037] The specific structure of the utility model refers to Figure 1-10 As shown, its main structure includes a corrective fixture for positioning and clamping the box panel part A, which is mainly composed of an upper base plate 10 and a lower base plate 20.

[0038] Specifically, Figure 1As shown, the upper base plate 10 and the lower base plate 20 are arranged in parallel and fixed to each other by the fixing buckle 50, so that the box plate part A is positioned and fixed as a whole between the upper base plate 10 and the lower base plate 20, so as to prevent the box plate part A from being deformed as a whole or shaking during the local correction process, which may reduce the correction effect. In addition, the upper base plate 10 and the lower base plate 20 are respectively slidably penetrated by an upper correction slide 90a and a lower correction slide 90b in the vertical direction, and the limit position of the upper correction slide 90a and the lower correction slide 90b sliding inwardly is adapted to the overall shape of the box plate part A. When the upper correction slide 90a and the lower correction slide 90b are in the limit position of sliding inwardly, the inner end portions of the upper correction slide 90a and the lower correction slide 90b can be fitted with the surface of the box plate part A in the standard state. When in use, the corrective clamp is sent into a conventional leveling machine, and the upper roller and the lower roller in the leveling machine respectively squeeze the outer end portions of the upper correction slide 90a and the lower correction slide 90b inward. When the outer end portions of the upper correction slide 90a and the lower correction slide 90b are pressed, the inner end portions of the upper correction slide 90a and the lower correction slide 90b slide inward to the set limit position, and the upper correction slide 90a and the lower correction slide 90b slide inward to collide with the box panel part A, and squeeze the deformed part of the box panel part A, so that the deformed part of the box panel part A is corrected to the standard state.

[0039] In the above embodiment, the fixing buckle 50 can be a fixing part in the prior art that can fix the upper base plate 10 and the lower base plate 20 to each other. Specifically, bolts respectively connected to the upper base plate 10 and the lower base plate 20 can be set on a straight plate or a C-shaped plate; or a screw rod perpendicular to the upper base plate 20 and penetrating the upper base plate 20 can be set on the lower base plate 10, and the upper base plate 10 and the lower base plate 20 can be locked and fixed to each other by using a locking nut on the screw rod.

[0040] More specifically, Figure 4 and Figure 5 As shown, the upper correction slide 90a and the lower correction slide 90b are both shaft-shaped structures with their axes distributed in the vertical direction. The outer ends of the upper correction slide 90a and the lower correction slide 90b can be detachably fixed with a pressure head 91, and the inner end of the pressure head 91 abuts against the upper substrate 10 or the lower substrate 20, thereby positioning the set limit position of the upper correction slide 90a or the lower correction slide 90b. In actual implementation, by replacing the pressure head 91 of different shapes, the set limit position of the upper correction slide 90a or the lower correction slide 90b can be adjusted according to different needs. Of course, in actual implementation, a gasket 93 can be detachably fixed to the inner end of the pressure head 91, and the inner end of the gasket 93 can abut against the upper substrate 10 or the lower substrate 20 to locate the set limit position of the upper correction slide 90a or the lower correction slide 90b; in this embodiment, the pressure head 91 can adopt a unified shape, and the set limit position of the upper correction slide 90a or the lower correction slide 90b can be adjusted by replacing gaskets 93 of different thicknesses.

[0041] On the basis of the above, if Figure 2 and Figure 3 As shown, for the working condition where the box plate part A needs to be corrected in many and non-concentrated places, in the top view, the upper correction slide 90a and the lower correction slide 90b are both set to be a plurality of lattice-distributed places, and each axial structure of the upper correction slide 90a and the lower correction slide 90b is used to correct each place of the box plate part A that needs to be corrected separately. Compared with the method of using a single upper correction slide 90a with a larger inner end area in combination with a single lower correction slide 90b, the problem of poor correction effect in some areas caused by stress dispersion during the correction and pressing process is effectively prevented. In addition, since the upper rollers and lower rollers in the leveling machine are often set to be a plurality of groups distributed at intervals along the correction conveying direction, the upper correction slide 90a and the lower correction slide 90b adopt a lattice-distributed structure, which can enable a plurality of groups of upper rollers and lower rollers to achieve multiple extrusions on the upper correction slide 90a and the lower correction slide 90b, further ensuring the correction effect. Of course, in actual implementation, if the box plate part A needs to be corrected in a few concentrated areas, a single upper correction slide 90a with a larger inner end area and a single lower correction slide 90b can also be used.

[0042] In addition, if Figure 4-8As shown, the shaft bodies of the upper correction slide 90a and the lower correction slide 90b are sleeved with a middle guide sleeve 92 respectively fixed to the lower surface of the upper base plate 10 and the upper surface of the lower base plate 20, so as to ensure the stable sliding of the upper correction slide 90a and the lower correction slide 90b along their own axis. In addition, since the lower surface of the box plate part A is far away from the top of the lower base plate 20, the axial length of the part of the lower correction slide 90b is required to be large, so that the rod body near the inner end of the lower correction slide 90b is sleeved with a supplementary guide sleeve 96 fixedly connected to the lower base plate 20, so as to further ensure the sliding stability of this type of lower correction slide 90b. The upper correction slide 90a and the lower correction slide 90b are both sleeved with a return spring 94 on their shafts for squeezing them to produce an outward sliding movement. The upper correction slide 90a and the lower correction slide 90b are both provided with a protrusion 95 on their shafts for positioning their outer end positions. The state in which the upper correction slide 90a and the lower correction slide 90b are not squeezed by the roller is a non-working state. The setting of the protrusion 95 and the return spring 94 enables the outer ends of all the upper correction slides 90a to be located on the same horizontal plane in the non-working state, thereby effectively preventing the upper correction slide 90a and the lower correction slide 90b from being uneven, which causes the movement of the corrective clamp in the leveling machine to be obstructed. In addition, since the upper correction slide 90a and the lower correction slide 90b have a tendency to slide outward in the non-working state, the upper correction slide 90a and the lower correction slide 90b are often separated from the box board part A in the initial non-working state. Therefore, during the correction process, the upper correction slide 90a and the lower correction slide 90b will first be squeezed and pushed to collide with the box board part A, and then the box board part A will be squeezed for correction, so that during the movement of the correction fixture in the leveling machine, the upper correction slide 90a and the lower correction slide 90b can achieve a correction action similar to continuous knocking of a hammer, which is easier to correct the box board part A to the standard state than directly pressing and correcting throughout the whole process.

[0043] It is worth mentioning that, since the upper roller and the lower roller in the conventional leveling machine roller are offset from each other, and the standard roller diameters are mostly 42mm, 88mm and 120mm, and when the roller diameter is 42mm, the distance between adjacent rollers is 45mm; when the roller diameter is 88mm, the distance between adjacent rollers is 90mm; when the roller diameter is 120mm, the distance between adjacent rollers is 135mm. Therefore, in actual implementation, on the basis of the upper correction slide 90a and the lower correction slide 90b being arranged as a plurality of dot matrix distributions, such as Figure 6-8 As shown, the spacing between the axes of adjacent upper correcting slides 90a and the spacing between the axes of adjacent lower correcting slides 90b are both 45mm, and the upper correcting slides 90a and the lower correcting slides 90b correspond to each other one by one or are offset by 22.5mm in the horizontal direction, and the outer ends of all upper correcting slides 90a and all lower correcting slides 90b are flush. Under this distribution mode, Figure 8 As shown, when the diameter of the leveling machine roller is 42mm, since the spacing between adjacent rollers under this diameter is 45mm, which is equal to the spacing between the axes of adjacent upper correction slides 90a and the spacing between the axes of adjacent lower correction slides 90b, when the orthopedic fixture is transported to the leveling machine, the adjacent upper rollers can be squeezed to the adjacent upper correction slides 90a, and the adjacent lower rollers can be squeezed to the adjacent lower correction slides 90b. Therefore, under this distribution, the upper correction slides 90a and the lower correction slides 90b can correspond to each other one by one or be offset by 22.5mm in the horizontal direction. Figure 6 As shown, when the diameter of the leveling machine roller is 88 mm, the distance between adjacent rollers is 90 mm, and the upper correction slide 90a and the lower correction slide 90b can be set to correspond to each other one by one, and the adjacent upper rollers can squeeze two upper correction slides 90a with one upper correction slide 90a in between, and the same is true for the lower correction slide 90b. Figure 7 As shown, when the diameter of the leveling machine roller is 120 mm, the spacing between adjacent rollers is 135 mm, the upper correction slide 90a and the lower correction slide 90b can be set to be horizontally offset by 22.5 mm, and the adjacent upper rollers can be squeezed to the two upper correction slides 90a with two upper correction slides 90a in between, and the same is true for the lower correction slide 90b. Obviously, in the above-mentioned layout of the upper correction slide 90a and the lower correction slide 90b, no matter the standard diameter of the rollers in the leveling machine rollers is mostly 42mm, 88mm or 120mm, when the orthopedic fixture is transported to the leveling machine, the rollers located directly above or below the orthopedic fixture will not have a situation where part of the rollers are in contact with the upper correction slide 90a or the lower correction slide 90b, while the other part of the rollers cannot act on the upper correction slide 90a or the lower correction slide 90b, thereby ensuring the synchronization of the force applied to the equally spaced upper correction slides 90a or the lower correction slides 90b, thereby making the force applied to the box board part A more uniform, and ultimately improving the orthopedic effect of the box board part A.

[0044] In order to ensure that the box plate part A can be stably positioned and clamped between the upper base plate 10 and the lower base plate 20, at least one product guide column 60 is arranged on the top surface of the lower base plate 20 at each side of the box plate part A. All product guide columns 60 enclose a guide cavity for guiding the box plate part A to slide in the vertical direction. The guide cavity can facilitate the rapid positioning of the placement position of the box plate part A and limit the box plate part A from sliding in the horizontal direction or rotating around the vertical axis. In addition, a product clamping assembly 70 is fixed on the upper base plate 10 and the lower base plate 20 to prevent the box plate part A from moving in the vertical direction. After the upper base plate 10 and the lower base plate 20 are fixed to each other, the box plate part A can be clamped, thereby preventing the box plate part A from shaking and causing additional deformation during the correction process.

[0045] Furthermore, the product clamping assembly 70 includes a lower corner clamping block 71a and a lower inner clamping block 71b fixed on the lower base plate 20, and the product clamping assembly 70 also includes an upper corner clamping block 72a and an upper inner clamping block 72b fixed on the upper base plate 10. The lower corner clamping block 71a and the upper corner clamping block 72a are both arranged in four groups distributed at the corners of the box plate part A, so as to clamp the four corners of the box plate part A; the lower inner clamping block 71b and the upper inner clamping block 72b are arranged in a one-to-one correspondence and distributed in a plurality of groups in the middle of the box plate part A, so as to clamp the middle of the box plate part A. A dispersed multi-point clamping method is adopted. During the process of locking and fixing the upper base plate 10 and the lower base plate 20 by the fixing buckle 50, the upper base plate 20 and the lower base plate 10 move toward each other, so that the corners and the middle of the box plate part A are clamped through the lower corner clamping block 71a and the lower internal clamping block 71b on the lower base plate 20, and the upper corner clamping block 72a and the upper internal clamping block 72b on the upper base plate 10, so as to disperse the clamping stress of the box plate part A, realize uniform clamping of the box plate part A as a whole, and further ensure the stability of the clamping of the box plate part A.

[0046] In addition, to further prevent the box plate part A from displacement during the correction process, such as Figure 2 and Fig.10 As shown, a positioning pin 30 which is plugged into and fits with the existing molded hole A1 on the box plate part A is fixed on the top surface of the lower base plate 20. Specifically, the position of the positioning pin 30 is determined according to the position of the existing molded hole A1 on the box plate part A of different structures.

[0047] And, if Figure 2 As shown, at least one substrate positioning column 80 is fixedly connected to each of the four sides of the top of the lower substrate 20, which is used to locate the distance between the lower substrate 20 and the upper substrate 10, thereby preventing the extrusion force exerted on the upper substrate 10 and the lower substrate 20 in the leveling machine from being transmitted to the box plate part A, thereby preventing damage to the existing unevenness in the plate structure of the box plate part A under the standard state.

[0048] In addition, in order to facilitate the rapid assembly between the upper substrate 10 and the lower substrate 20, as shown in FIG. Figure 1 , Figure 2 and Figure 3 As shown, a substrate guide assembly 40 for positioning and assembling each other is arranged between the upper substrate 10 and the lower substrate 20. The substrate guide assembly 40 includes a substrate guide column 41 fixed to the top surface of the lower substrate 20 and a substrate guide sleeve 42 arranged on the upper substrate 10 and plugged into the substrate guide column 41.

[0049] Of course, for those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0051] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A special-shaped parts correction fixture, characterized in that: It comprises an upper base plate (10) and a lower base plate (20) which are arranged in parallel and fixed to each other by a fixing buckle (50); a box plate part (A) is positioned and clamped between the upper base plate (10) and the lower base plate (20); an upper correction slide (90a) and a lower correction slide (90b) are respectively slidably penetrated in the vertical direction on the upper base plate (10) and the lower base plate (20); when the outer ends of the upper correction slide (90a) and the lower correction slide (90b) are pressed, the inner ends of the upper correction slide (90a) and the lower correction slide (90b) slide inward to a set limit position to squeeze the deformed part of the box plate part (A) so as to correct it to a standard state.

2. The special-shaped parts correction fixture according to claim 1, characterized in that: The upper correction slide (90a) and the lower correction slide (90b) are both axial structures with their axes distributed in the vertical direction. The outer ends of the upper correction slide (90a) and the lower correction slide (90b) are both detachably fixed with a pressure head (91), and the inner end of the pressure head (91) abuts against the upper substrate (10) or the lower substrate (20), thereby positioning the upper correction slide (90a) or the lower correction slide (90b) at the set limit position.

3. The special-shaped parts correction fixture according to claim 2, characterized in that: The shaft bodies of the upper correction slide (90a) and the lower correction slide (90b) are sleeved with a middle guide sleeve (92) respectively fixed to the lower plate surface of the upper base plate (10) and the upper plate surface of the lower base plate (20); the shaft bodies of the upper correction slide (90a) and the lower correction slide (90b) are sleeved with a return spring (94) for squeezing them to slide outward; the shaft bodies of the upper correction slide (90a) and the lower correction slide (90b) are provided with a protrusion (95) for locating the outer end position.

4. The special-shaped parts correction fixture according to claim 3, characterized in that: A lengthening guide sleeve (96) fixedly connected to the lower base plate (20) is sleeved on the shaft body adjacent to the inner end of the lower correction slide (90b).

5. The special-shaped parts correction fixture according to claim 3, characterized in that: In a top view, the upper correction slide (90a) and the lower correction slide (90b) are arranged as a plurality of lattice-distributed ones, and along the movement direction of the orthopedic fixture in the correction machine, the spacing between the axes of adjacent upper correction slides (90a) and the spacing between the axes of adjacent lower correction slides (90b) are both 45 mm, and the upper correction slide (90a) and the lower correction slide (90b) correspond to each other one by one or are horizontally offset by 22.5 mm.

6. A special-shaped parts correction fixture according to any one of claims 1 to 5, characterized in that: At least one product guide column (60) is arranged on the top surface of the lower base plate (20) at each side of the box plate part (A), and all the product guide columns (60) enclose a guide cavity for guiding the box plate part (A) to slide in a vertical direction. A product clamping assembly (70) is fixed on the upper base plate (10) and the lower base plate (20) to prevent the box plate part (A) from moving in a vertical direction.

7. The special-shaped parts correction fixture according to claim 6, characterized in that: The product clamping assembly (70) includes a lower corner clamping block (71a) and a lower internal clamping block (71b) fixed on the lower base plate (20), and the product clamping assembly (70) also includes an upper corner clamping block (72a) and an upper internal clamping block (72b) fixed on the upper base plate (10). The lower corner clamping blocks (71a) and the upper corner clamping blocks (72a) are both arranged in four groups distributed at the corners of the box board part (A) for clamping the four corners of the box board part (A); the lower internal clamping blocks (71b) and the upper internal clamping blocks (72b) are arranged in a one-to-one corresponding manner and distributed in a plurality of groups in the middle of the box board part (A) for clamping the middle of the box board part (A).

8. A special-shaped parts correction fixture according to any one of claims 1 to 5, characterized in that: A positioning pin (30) is fixed on the top surface of the lower base plate (20) and is plugged into and matched with the existing mold hole (A1) on the box plate part (A).

9. A special-shaped parts correction fixture according to any one of claims 1 to 5, characterized in that: At least one substrate positioning column (80) is fixedly connected to each of the four sides of the top of the lower substrate (20) to locate the distance between the lower substrate (20) and the upper substrate (10).

10. The special-shaped parts correction fixture according to any one of claims 1 to 5, characterized in that: A substrate guide assembly (40) for positioning and assembling the upper substrate (10) and the lower substrate (20) is provided between the upper substrate (10) and the lower substrate (20), and the substrate guide assembly (40) comprises a substrate guide column (41) fixed to the top surface of the lower substrate (20) and a substrate guide sleeve (42) provided on the upper substrate (10) and plugged into and matched with the substrate guide column (41).

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