Television backboard frame positioning connection structure forming device and forming method thereof

Abstract

The invention discloses a television backboard frame positioning connection structure forming device and a forming method thereof. The television backboard frame positioning connection structure forming device comprises a convex point forming mechanism, a clamping hole forming mechanism, an ear forming mechanism and a mounting hole forming mechanism. The convex point forming mechanism comprises a convex point female die and a convex point male die, the convex point female die is arranged in a vertical guide groove of the convex hull forming female die in a lifting mode, and the convex point male die is arranged in a vertical guide groove of the convex hull forming male die in a lifting mode. The convex hull forming female die comprises an inclined face part and a plane part, and the vertical guide groove in the convex hull forming female die is located in the inclined face part. The convex hull forming female die is a lower die, the inclined plane part is arranged at a fixed height, the plane part is vertically arranged in a lifting mode, and the lifting limit position coincides with the plane of the commanding height of the inclined plane part; and the forming direction of the salient point forming mechanism is a vertical direction. The problem that the reject ratio of back plate products is high due to the fact that a frame positioning and connecting structure is complex in forming process and difficult to form is solved.

Description

Technical Field

[0001] The invention relates to the technical field of television back panel molding equipment, in particular to a television back panel frame positioning connection structure molding device and a molding method thereof. Background Art

[0002] The main load-bearing function of the TV back panel is to lock the screen assembly by connecting the front frame with the back panel frame. To ensure the installation stability of the screen assembly, the tightness of the connection structure between the front frame and the back panel plays a major role. A TV back panel sets a special positioning connection structure to ensure that the connection and matching relationship between the front frame and the back panel frame is more accurate and reliable. However, since the positioning connection structure requires forming positioning convex points on the inclined surface and punching a number of studs on the lateral flange part of the frame, the molding process is complicated and molding and debugging are difficult. The convex points are formed by stamping an inclined slider, which has high processing requirements for the inclined slider, resulting in a high defective rate of the back panel products. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a TV back panel frame positioning connection structure molding device and a molding method thereof, so as to solve the problem of high defective rate of back panel products caused by complex molding process and difficult molding of the frame positioning connection structure.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides a device and method for forming a positioning connection structure of a TV back panel frame, including a convex point forming mechanism, a clamping hole forming mechanism, an ear edge forming mechanism and a mounting hole forming mechanism, wherein the convex point forming mechanism is used to form the positioning convex points on the convex bulge of the back panel, the clamping hole forming mechanism is used to form the clamping holes on the back panel frame for the connector to pass through or buckle into, the ear edge forming mechanism is used to form the connecting ear edge on the back panel frame that fits the connector, and the mounting hole forming mechanism is used to form the fixing plugging hole of the stud on the connecting ear edge;

[0005] The convex point forming mechanism comprises a convex point die and a convex point die, wherein the convex point die is lifted and arranged in a vertical guide groove of the convex hull forming die, and the convex point die is lifted and arranged in a vertical guide groove of the convex hull forming die; the convex hull forming die comprises an inclined surface part and a flat surface part, and the vertical guide groove is located on the inclined surface part;

[0006] The convex hump forming die is a lower die, the inclined surface portion is set at a fixed height, the plane portion is set to rise and fall vertically, and the rising limit position coincides with the commanding height plane of the inclined surface portion;

[0007] The forming direction of the convex point forming mechanism is the vertical direction; when the convex point forming mechanism forms the positioning convex point, the convex forming punch and the plane part clamp the middle part of the straight back panel sheet, and the ear forming mechanism clamps the edge of the back panel sheet.

[0008] Furthermore, the ear forming mechanism includes an outer contour cutting part and a bending part, the contour cutting part is used to synchronously punch and form the outer contour of the back panel flange and the outer contour of the connecting ear; the bending part is used to bend with the straight line where the outer edge of the card hole is located as the crease to form the flange structure of the back panel frame and the connecting ear.

[0009] Furthermore, the ear forming mechanism is provided with a bending punch, a pressing block, a punching block and a buffer block. The pressing block is aligned up and down with the bending punch, the punching block is aligned up and down with the buffer block, and the pressing block presses the flanged part on the bending punch; the punching block and the buffer block clamp the cut-off part, and move downward to punch and cut in accordance with the outer side surface of the bending punch.

[0010] Furthermore, the bending punch block is arranged to rise and fall. When the bending punch block is located at the lower limit position, its upper end face is flush with the commanding height plane of the inclined surface part. The bending punch block rises to push the flange part to bend upward until it fits with the outer side surface of the bending limit block.

[0011] Furthermore, a vertical groove is provided on one side of the bending punch block close to the buffer block, and a slider is provided on one side of the buffer block close to the bending punch block. The slider is slidably matched with the vertical groove, and the slider is connected to the bottom groove surface of the vertical groove through an elastic member. When the slider is in contact with the upper groove surface of the vertical groove, the bending punch is flush with the upper end surface of the buffer block, and the bottom end of the buffer block is connected to the lifting drive cylinder.

[0012] Furthermore, the mounting hole forming mechanism includes a vertical through hole opened on the upper end surface of the bending punch block, a punch rod is arranged corresponding to the vertical through hole, and the punch rod is telescopically arranged on the lower end surface of the pressing block.

[0013] Furthermore, the hole forming mechanism includes a fixed support block, which is integrally arranged with the inclined surface part, and the upper end surface of the fixed support block is flush with the commanding height plane of the inclined surface part. A shearing groove is opened on the upper end surface of the fixed support block, and a shearing punch is arranged corresponding to the shearing groove. The shearing punch is fixedly connected to the lower end surface of the bending limit block, and the bending limit block is set to rise and fall.

[0014] Furthermore, the hole forming mechanism also includes a movable support block, which is located in the shearing groove and is lifted and lowered in contact with the side wall of the bending punch block.

[0015] Further, the following steps are included:

[0016] S1, moving the plane part, the convex point die, and the lower dies of the clamping hole forming mechanism, the ear side forming mechanism, and the mounting hole forming mechanism to be flush with the commanding height plane of the inclined surface part to form a material placement plane;

[0017] S2, placing a straight sheet on the material placement plane, and moving the convex hull forming punch and the upper die of the ear-side forming mechanism downward to press the sheet on the material placement plane;

[0018] S3, the upper mold of the card hole forming mechanism, the mounting hole forming mechanism and the convex point convex mold respectively act to cooperate with the corresponding lower mold to respectively complete the forming of the card hole, the fixed plug hole and the positioning convex point;

[0019] S4, after resetting the plane part, the convex forming punch is pressed down into place to complete the forming of the convex bulge of the back plate, so that the positioning convex point is located on the inclined surface of the convex bulge of the back plate;

[0020] S5. The ear molding mechanism completes the synchronous molding of the flange structure connecting the ear and the back panel frame.

[0021] Beneficial effects: The device and method for forming the positioning connection structure of the frame of the back panel of the present invention first complete the forming of the fixed plug-in holes and the positioning convex points in the straight state of the sheet, and then form the convex hull and the bending flange, thereby avoiding the difficulty of forming the lateral punching and the bevel processing convex points, simplifying the processing difficulty of the mold, reducing the cost, and reducing the influence of the mold precision on the product quality. Through the clamping material partition, the random flow of materials in the complex processing technology is restricted, ensuring that the fixed plug-in holes and the positioning convex points obtained by processing in the straight state will not be offset after the flanging and convex hull forming are completed, thereby reducing the processing difficulty and ensuring the processing precision and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the molding section of a positioning connection structure at a certain location of a back plate according to an embodiment of the present invention;

[0023] Figure 2 The present invention is a schematic structural diagram of a television back panel frame positioning connection structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] As attached Figure 1-2The device and method for forming a positioning connection structure of a television back panel frame include a convex point forming mechanism, a hole forming mechanism, an ear forming mechanism and a mounting hole forming mechanism. The convex point forming mechanism is used to form the positioning convex point 2 on the convex bulge 1 of the back panel, the hole forming mechanism is used to form the hole 3 on the back panel frame for the connector to pass through or buckle into, the ear forming mechanism is used to form the connecting ear 4 on the back panel frame that fits with the connector, and the mounting hole forming mechanism is used to form the fixing plug-in hole 5 of the stud on the connecting ear 4. The forming device is used to simultaneously form the positioning connection structures at multiple locations on the back panel frame during the process of stamping and forming the television back panel structure. It is specifically completed during the process of forming the convex bulge structure in the middle of the back panel and the flange structure of the frame, which can reduce the number of equipment transfers in the overall back panel processing process, simplify the process flow, and improve efficiency. As shown in the attached Figure 2 As shown in the figure, the positioning connection structure formed by the forming device includes a plurality of clamping holes formed on the entire edge plane of the back plate, and the outer edge of the clamping hole is formed with a connecting ear, and the connecting ear is provided with a mounting hole that matches the fastening stud. Corresponding to the position of the clamping hole, a plurality of positioning convex points are formed on the back side of the convex bulge of the back plate. In an embodiment of a high-load-bearing large-size TV back plate, a plurality of such as Figure 2 The positioning connection structure shown, when being connected and installed with the front frame, has a number of connecting parts correspondingly arranged on the left and right edges of the front frame. The connecting parts are passed through the card holes from front to back, or are inserted into the card holes from the back side by bypassing the outer side of the back panel frame, and the positioning holes arranged on the connecting parts are correspondingly engaged with the multiple positioning protrusions on the convex bump of the back panel. The side frames of the front frame structure are completely fitted with the connecting ears through the positioning and limiting snap connections at the two locations, and the mounting holes on the side frames are aligned with the fixed plug-in holes 5, so that the studs are passed through the mounting holes and the fixed plug-in holes 5, and tightened by tightening the nuts, so that the back panel and the two side edges of the front frame are accurately, firmly and reliably connected.

[0026] The convex point forming mechanism includes a convex point die 21 and a convex point punch 22, wherein the convex point die 21 is set in the vertical guide groove of the hull forming die 11 for lifting and lowering, and the convex point punch 22 is set in the vertical guide groove of the hull forming punch 12 for lifting and lowering; the hull forming die 11 includes an inclined surface part 111 and a plane part 112, and the vertical guide groove thereon is located at the inclined surface part 111; wherein, the hull forming die 11 and the hull forming punch 12 can cooperate to directly complete the stamping forming of the hull structure in the middle of the back plate, and since the convex point is formed on the hull structure, the convex point forming mechanism is embedded in the hull forming die, and by opening an adaptive lifting groove in the upper and lower dies of the hull forming, the convex and concave dies of the convex point forming can be moved, so that the convex point and the hull can be formed successively, wherein the convex point die is set corresponding to the hull die, and the convex point punch is set corresponding to the hull punch, so that the formed convex point can be located on the outside of the hull to achieve the expected positioning effect. According to the number and position distribution of the actual positioning connection structures, the positions of multiple convex point forming mechanisms relative to the convex hull forming mold are determined, and then vertical guide grooves are opened at the corresponding positions of the upper and lower molds of the convex point forming. The upper and lower molds of the convex point forming are slidably installed in the grooves and connected to the hydraulic system respectively. The vertical guide grooves are set corresponding to the inclined surface 111 of the convex hull forming die 11, so that the positioning convex points are located on the inclined surface, meeting the molding requirements for specific structures.

[0027] The convex hull forming die 11 is a lower die, the inclined surface part 111 is set at a fixed height, the plane part 112 is set to rise and fall vertically, and the rising limit position coincides with the commanding height plane of the inclined surface part 111; the forming direction of the convex point forming mechanism is the vertical direction; when the convex point forming mechanism forms the positioning convex point 2, the convex hull forming die 12 and the plane part 112 clamp the middle part of the straight back plate sheet, and the ear molding mechanism clamps the edge of the back plate sheet. That is, the molding of the positioning convex point is completed before the convex hull is formed, and there is no need to complete the processing of the convex point on the inclined surface by designing an inclined slider after the convex hull is formed. The design and processing difficulty of the mold are simplified, and the problem of substandard positioning convex point molding caused by the difficulty of the inclined slider to meet the accuracy requirements is avoided. And when the convex point is stamped and formed, other molding areas of the sheet are clamped by other molding mechanisms, so that the convex point molding process has a smaller impact on the sheet stretching area, and the convex point molding quality is higher.

[0028] The ear edge forming mechanism includes an outer contour trimming part and a bending part. The contour trimming part is used for synchronous punching to form the outer contour of the back plate flange and the outer contour of the connecting ear edge; the bending part is used for bending the straight line where the outer edge of the card hole is located as a fold to form the flange structure and the connecting ear edge of the back plate frame. That is, the connecting ear edge and the frame flange edge are formed in the same plane, and the outer edge of the card hole is flush with the inner side wall of the flange. When the connecting piece is inserted into the card hole, it can be perfectly fitted with the inner wall or outer wall of the flange, thereby ensuring a high-quality connection relationship. The forming of the connecting ear edge is wider than the frame side wall formed by the entire flange structure, which effectively enhances the bearing strength of the stud connection point. The longitudinal central axis of the connecting ear edge just crosses with the longitudinal central axis of the side frame. The fixed plug hole 5 is just formed at the intersection, which enhances the orifice strength of the fixed plug hole 5 and ensures the stability of the stud connection. The protruding side frame part of the ear edge can also be used as a plug-in seam reserved for the plug-in plate and the front frame to further enhance the connection strength.

[0029] The ear edge forming mechanism is provided with a bending punch 31, a pressing block 32, a punching block 33 and a buffer block 34. The pressing block 32 is aligned with the bending punch 31 in the vertical direction, and the punching block 33 is aligned with the buffer block 34 in the vertical direction. The pressing block 32 presses the flanging part on the bending punch 31; the punching block 33 and the buffer block 34 clamp the cut-off part, and move downward to punch and cut in accordance with the outer side of the bending punch 31. That is, on the basis of the original blank, the bending punch 31 and the pressing block 32 are clamped to cover the expected side frame and ear edge contour area, and then the waste edge part outside the clamping boundary is cut off by the punching block. Since the waste edge part to be punched is in the shape of a long strip or a ring, the buffer block and the punching block clamp the waste edge part to complete the punching, so that the edge quality of the trimming is higher.

[0030] The bending punch 31 is arranged to be lifted and lowered. When the bending punch 31 is at the lower limit position, its upper end surface is flush with the commanding height plane of the inclined surface portion 111. The bending punch 31 rises and pushes the flange portion to bend upward until it fits with the outer side surface of the bending stop block 35. The bending punch plays a role in positioning the trimming contour during trimming, as well as supporting and limiting the edge of the back plate. After the contour is cut out, the bending punch moves upward to push the clamped portion during trimming to bend upward until it fits with the bending stop block, completing the synchronous forming of the side wall of the back plate frame and the connecting ear.

[0031] A vertical groove 311 is provided on one side of the bending punch 31 close to the buffer block 34, and a slider 341 is provided on one side of the buffer block 34 close to the bending punch 31. The slider 341 slides with the vertical groove 311, and the slider 341 is connected to the bottom groove surface of the vertical groove 311 through an elastic member. When the slider 341 is in contact with the upper groove surface of the vertical groove 311, the bending punch 31 is flush with the upper end surface of the buffer block 34, and the bottom end of the buffer block 34 is connected to the lifting drive cylinder. The vertical groove guides the downward movement of the buffer block, and the lifting drive cylinder connected to the buffer block is also used as a buffer cylinder. When trimming is performed by the punching block 33, the cylinder and the elastic member work together to play a buffering role, and the bending punch is indirectly driven by the buffer block. When the buffer block does not rise, the bending punch cannot rise actively. Before the trimming process, the buffer block and the punching block are driven by their respective cylinders to offset each other to keep the sheet in the horizontal plane. The buffer block is restricted by the punching block and cannot continue to move upward, and the bending punch cannot be bent before completing the trimming.

[0032] The mounting hole forming mechanism includes a vertical through hole 41 opened on the upper end surface of the bending punch block 31, and a punch rod 42 is provided corresponding to the vertical through hole 41. The punch rod 42 is telescopically arranged on the lower end surface of the pressing block 32. The pressing block presses the side frame part on the bending punch block, and the punch rod punches downward into the vertical through hole to complete the forming of the fixed plug hole 5, ensuring the quality of the hole mouth contour. The large aperture is set at the lower end of the vertical through hole to allow blanking.

[0033] A distance measuring sensing module or a pressure sensing module is provided at the bottom of the vertical groove 311 to detect the proximity of the slider 341. When it approaches a certain threshold, the punching block 33 is controlled to move up, and the pressing block 32 is controlled to move up and reset. After the pressing block 32 is reset, the buffer block 34 is driven to move up and drive the bending punch block 31 to move up, thereby completing the bending and forming of the flanging and the connecting ear.

[0034] The hole forming mechanism includes a fixed support block 51, which is integrally arranged with the inclined surface portion 111. The upper end surface of the fixed support block 51 is flush with the commanding height plane of the inclined surface portion 111. A shearing groove 52 is opened on the upper end surface of the fixed support block 51, and a shearing punch 53 is arranged corresponding to the shearing groove 52. The shearing punch 53 is fixedly connected to the lower end surface of the bending limit block 35, and the bending limit block 35 is set to rise and fall.

[0035] The bending limit block is used as a driving block of the shear punch. When multiple clamping holes need to be formed on the same side edge, multiple corresponding shear punches can be fixed on the same bending limit block, thereby realizing the synchronous forming of multiple clamping holes. After the punching is completed, the shear punches are correspondingly inserted into the formed clamping holes. The bending limit block cooperates with the fixed support block 51 to clamp the back plate part where the clamping hole is located, thereby ensuring that the clamping hole structure is not affected when other parts are processed.

[0036] The clamping hole forming mechanism also includes a movable support block 54, which is located in the shearing groove 52 and is arranged to be lifted and lowered in accordance with the side wall of the bending punch block 31. If both ends of the connecting ear in the length direction need to extend beyond the side wall of the back panel frame, the inner end contour of the ear is formed synchronously when forming the clamping hole, and the cross-sectional contour of the side of the movable support block away from the bending punch block 31 is set to the inner end contour of the ear by setting the movable support block 54, so that the movable support block and the shearing groove 52 jointly surround and form the clamping hole shape contour before bending, and when bending, the movable support block is moved downward to provide an avoidance space for the inner end of the ear, so that the outer end of the ear is bent upward to fit the bending limit block, and the inner end of the ear is turned downward to fit the bending punch block 31, thereby completing the synchronous forming of the double-end protruding ear and the frame side wall folding structure.

[0037] The positioning and connecting structure forming process method of the positioning and connecting structure forming device of the TV back panel frame specifically comprises the following steps:

[0038] S1, move the plane part 112, the convex point die 21, and the lower dies of the clamping hole forming mechanism, the ear side forming mechanism, and the mounting hole forming mechanism to be flush with the commanding height plane of the inclined surface part 111 to form a material placement plane;

[0039] S2, placing a straight sheet on the material placement plane, and pressing the sheet on the material placement plane by the convex hull forming punch 12 and the upper die of the ear-side forming mechanism downward; the straight sheet is a rectangular sheet of appropriate size that has been cut in advance, and is placed relative to the material placement plane by common positioning means, so that the sheet can completely cover all the bending punches, and the part outside the bending punch is the waste edge part. By controlling the size of the sheet, the waste of materials can be saved as much as possible.

[0040] S3, the upper mold of the card hole forming mechanism, the installation hole forming mechanism and the convex punch 22 respectively move and cooperate with the corresponding lower mold to complete the forming of the card hole 3, the fixed plug hole 5 and the positioning convex point 2 respectively; among them, the forming of the card hole 3 is completed first, and then the card hole forming position is clamped and fixed by the bending limit block to separate the convex hull forming area and the frame forming area, and then the positioning convex point 2 and the fixed plug hole 5 are formed simultaneously.

[0041] S4. After resetting the plane part 112, the convex forming punch 12 is pressed down into place to complete the forming of the back plate convex 1, so that the positioning convex point 2 is located on the inclined surface of the back plate convex 1; when forming the convex point, the convex point die is reset to the lowest end, and the convex point die is moved and reset to the highest end, so that the convex point die and the convex point die are both groove forms without direct contact corresponding to the convex point forming position, and then when the convex point is stretched to form the convex point, the material in the convex point forming area is almost not subjected to the stretching force, so that the relative position of the convex point and the card hole in the extension direction of the material surface remains unchanged, thereby ensuring that processing the convex point first and then processing the convex point will not cause the displacement of the convex point position, and there is no need to use an inclined slider to process the convex point on the inclined surface.

[0042] S5, the ear edge forming mechanism completes the synchronous forming of the connecting ear edge 4 and the back panel frame flange structure. After all the structures on the back panel are formed, the edge contour is cut out, including the frame and the outer contour of the connecting ear edge, and finally bent to form a flanged frame with ear edges.

[0043] After the above forming process, the position of the card hole is first determined, and then the convex hull forming area and the frame forming area are divided according to the area where the card hole is formed, and then the position of the fixed plug hole 5 and the positioning convex point is determined, and then the convex hull and the flanged frame with ears are formed in sequence, so that the card hole, the positioning convex point, the connecting ear and the fixed plug hole form the final relative position relationship. By first completing the forming of the fixed plug hole and the positioning convex point in the flat state of the sheet, and then forming the convex hull and the bending flange, the difficulty of forming the lateral punching and the bevel processing convex point is avoided, the processing difficulty of the mold is simplified, the cost is reduced, and the influence of the mold precision on the product quality is reduced. Through the clamping material partition, the random flow of materials in the complex processing technology is restricted, and it is ensured that the fixed plug hole and the positioning convex point obtained by processing in the flat state will not be offset after the flange and convex hull forming are completed, thereby reducing the processing difficulty and ensuring the processing precision and quality.

[0044] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the above principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A TV back panel frame positioning connection structure forming device, characterized in that: It comprises a convex point forming mechanism, a clamping hole forming mechanism, an ear edge forming mechanism and a mounting hole forming mechanism, wherein the convex point forming mechanism is used to form a positioning convex point (2) on a convex bump (1) of a back panel, the clamping hole forming mechanism is used to form a clamping hole (3) on a back panel frame for a connecting piece to pass through or buckle into, the ear edge forming mechanism is used to form a connecting ear edge (4) on the back panel frame that fits with the connecting piece, and the mounting hole forming mechanism is used to form a fixing plugging hole (5) for a stud on the connecting ear edge (4); The convex point forming mechanism comprises a convex point die (21) and a convex point die (22); the convex point die (21) is arranged in a vertical guide groove of a convex point forming die (11) for lifting and lowering, and the convex point die (22) is arranged in a vertical guide groove of a convex point forming die (12) for lifting and lowering; The convex hull forming die (11) comprises an inclined surface portion (111) and a flat surface portion (112), wherein the vertical guide groove is located on the inclined surface portion (111); The convex hump forming die (11) is a lower die, the inclined surface portion (111) is set at a fixed height, the plane portion (112) is set to rise and fall vertically, and the rising limit position coincides with the commanding height plane of the inclined surface portion (111); The forming direction of the convex point forming mechanism is the vertical direction; When the convex point forming mechanism forms the positioning convex point (2), the convex hull forming punch (12) and the plane part (112) clamp the middle part of the straight back plate sheet, and the ear forming mechanism clamps the edge of the back plate sheet.

2. A TV back panel frame positioning connection structure forming device according to claim 1, characterized in that: The ear forming mechanism includes an outer contour cutting part and a bending part. The contour cutting part is used for synchronously punching and forming the outer contour of the back panel flange and the outer contour of the connecting ear; the bending part is used for bending with the straight line where the outer edge of the card hole is located as the crease to form the flange structure and the connecting ear of the back panel frame.

3. A TV back panel frame positioning connection structure forming device according to claim 2, characterized in that: The ear-side forming mechanism is provided with a bending punch (31), a pressing block (32), a punching block (33) and a buffer block (34); the pressing block (32) is aligned with the bending punch (31) in upper and lower directions; the punching block (33) is aligned with the buffer block (34) in upper and lower directions; the pressing block (32) presses the flanged portion on the bending punch (31); the punching block (33) and the buffer block (34) clamp the cut-off portion and move downward to punch in contact with the outer side surface of the bending punch (31).

4. A TV back panel frame positioning connection structure forming device according to claim 3, characterized in that: The bending punch (31) is arranged to be lifted and lowered. When the bending punch (31) is located at the lower limit position, its upper end surface is flush with the commanding height plane of the inclined surface portion (111). The bending punch (31) rises and pushes the flange portion to bend upward until it is in contact with the outer side surface of the bending limit block (35).

5. A TV back panel frame positioning connection structure forming device according to claim 4, characterized in that: A vertical groove (311) is arranged on one side of the bending punch (31) close to the buffer block (34); a slider (341) is arranged on one side of the buffer block (34) close to the bending punch (31); the slider (341) is slidably matched with the vertical groove (311); the slider (341) is connected to the bottom groove surface of the vertical groove (311) through an elastic member; when the slider (341) is in contact with the upper groove surface of the vertical groove (311), the bending punch (31) is flush with the upper end surface of the buffer block (34); and the bottom end of the buffer block (34) is connected to a lifting drive cylinder.

6. A TV back panel frame positioning connection structure forming device according to claim 5, characterized in that: The mounting hole forming mechanism comprises a vertical through hole (41) formed on the upper end surface of the bending punch (31), a punch rod (42) is arranged corresponding to the vertical through hole (41), and the punch rod (42) is telescopically arranged on the lower end surface of the pressing block (32).

7. A TV back panel frame positioning connection structure forming device according to claim 6, characterized in that: The hole forming mechanism comprises a fixed support block (51), the fixed support block (51) and the inclined surface portion (111) are integrally arranged, the upper end surface of the fixed support block (51) is flush with the commanding height plane of the inclined surface portion (111), the upper end surface of the fixed support block (51) is provided with a shearing groove (52), a shearing punch (53) is arranged corresponding to the shearing groove (52), the shearing punch (53) is fixedly connected to the lower end surface of the bending limit block (35), and the bending limit block (35) is arranged to be raised and lowered.

8. A TV back panel frame positioning connection structure forming device according to claim 7, characterized in that: The hole forming mechanism further comprises a movable support block (54), wherein the movable support block (54) is located in the shearing groove (52), and the movable support block (54) is arranged to be lifted and lowered in contact with the side wall of the bending punch (31).

9. A molding method for a TV back panel frame positioning connection structure molding device according to any one of claims 1 to 8, characterized in that: The steps include: S1, moving the plane part (112), the convex point die (21), and the lower dies of the clamping hole forming mechanism, the ear side forming mechanism, and the mounting hole forming mechanism to be flush with the commanding height plane of the inclined surface part (111) to form a material placement plane; S2, placing a straight sheet on the material placement plane, and moving the convex hull forming punch (12) and the upper die of the ear-side forming mechanism downward to press the sheet on the material placement plane; S3, the upper mold of the clamping hole forming mechanism, the mounting hole forming mechanism and the convex point punch (22) respectively move and cooperate with the corresponding lower mold to respectively complete the forming of the clamping hole (3), the fixed plug hole (5) and the positioning convex point (2); S4, after resetting the plane part (112), the convex molding punch (12) is pressed down into place to complete the molding of the back plate convex bump (1), so that the positioning convex point (2) is located on the inclined surface of the back plate convex bump (1); S5, the ear edge forming mechanism completes the synchronous forming of the connecting ear edge (4) and the back panel frame flange structure.

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