A U-shaped clamp forming mold for antenna support and its process

Abstract

The application relates to a U-shaped clamp plate forming die for an antenna support and a process thereof, characterized in that the U-shaped clamp plate forming die comprises a rack, an upper die and a lower die; the upper die and the lower die are arranged on the rack respectively, and a forming channel for accommodating a blank plate is formed between the upper die and the lower die; when the U-shaped clamp plate with a bent flange structure is stamped and formed, stamping and bending of the flange structure are needed, the conventional U-shaped clamp plate blank is straight, the blank forming die is simple, and the production requirement cannot be met; in addition, in the forming process, a progressive die forming mode is adopted, continuous punching and trimming are designed, and a pressing surface station is designed to ensure the flatness of the structure and prevent deformation caused by material extension.

Description

Technical Field

[0001] This invention relates to the field of progressive forming of antenna brackets, and more particularly to a U-shaped clamp forming mold for antenna brackets and its process. Background Technology

[0002] Progressive dies consist of multiple stations, each sequentially linked to complete different processing steps. A series of different stamping processes are completed in one stroke of the punch press. After one stroke is completed, the punch press feeding mechanism moves the material forward at a fixed step distance. In this way, multiple stations can be completed on one die, generally including punching, blanking, bending, trimming, and stretching stations. They are characterized by safe operation, easy automation, the ability to use high-speed punch presses for production, reduced punch press and site area, reduced transportation and warehouse occupation of semi-finished products, and high production efficiency.

[0003] In the production process of conventional U-shaped clamps for antenna brackets using progressive dies, only the blank is punched. However, when dealing with the new U-shaped clamps with bent flanges, the conventional progressive dies for U-shaped clamps that only involve punching cannot meet the requirements for blank forming. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a U-shaped clamp forming mold for antenna bracket and its process, which can solve the problem of bending and forming a new type of flanged antenna bracket blank.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a U-shaped clamp forming mold for antenna bracket, the innovation of which is: including a frame, an upper mold and a lower mold; the upper mold and the lower mold are respectively arranged on the frame, and a forming channel for accommodating the blank plate is formed between the upper mold and the lower mold;

[0006] The frame is arranged in sequence according to the forming process as follows: punching pin hole and outer contour station, side trimming flash and connecting hole punching station, surface pressing station, ear plate hole punching station, flange bending station, empty station and end trimming flash station.

[0007] The punching and hanging pin hole and outer contour station, the side trimming and connecting hole punching station, the surface pressing station, the ear plate hole punching station, the flange bending station and the end trimming and flashing station are all equipped with upper and lower molds that cooperate with the blank plate.

[0008] The upper mold of the punching pin hole and outer contour station is provided with a positioning hole punch and a pair of outer contour punching punches. The positioning hole punch cooperates with the lower mold to form a positioning hole on the blank plate. The outer contour punching punch cooperates with the lower mold to form the outer contour of the U-shaped clamping plate on the blank plate.

[0009] The upper die of the side cutting and connecting hole punching station is equipped with a side cutting punch and a pair of connecting hole punches. The side cutting punch cooperates with the lower die to cut off the flash between two adjacent products of the blank; the connecting hole punch cooperates with the lower die to open a pair of connecting holes on the blank.

[0010] The upper mold of the surface pressing station is equipped with a surface pressing head, which cooperates with the lower mold to flatten the blank plate.

[0011] The upper die of the ear plate hole punching station is equipped with a pair of ear plate hole punches, and the ear plate hole punches are aligned with the positioning holes on the blank and cooperate with the lower die to enlarge the positioning holes to form ear plate holes.

[0012] The upper die of the flange bending station is equipped with a pair of flange bending punches. The flange bending punches cooperate with the lower die to punch and bend the flange edge at the outer contour of the blank plate downward.

[0013] The upper mold of the trimming station is equipped with a pair of ear plate trimming punches, which cooperate with the lower mold to remove the trimming at both ends of the product.

[0014] Furthermore, a buffer cylinder is provided at the empty workstation, and the buffer cylinder is set on the upper mold of the empty workstation to achieve the pressing of the product.

[0015] Furthermore, an ejector cylinder is provided on the lower mold at the flash trimming station, and the ejector cylinder completes the ejection of the product after the flash trimming at the end of the product is removed at the flash trimming station.

[0016] An innovative process for forming a U-shaped clamp for an antenna bracket is as follows:

[0017] S1: Punching pin holes and outer contour: The processed blank plate is inserted into the progressive die from the inlet direction of the progressive die; at the punching pin hole and outer contour station of the progressive die, the positioning hole punch of the upper die and a pair of outer contour punching punches cooperate with the lower die to form a pair of positioning holes and a U-shaped clamping plate blank plate outer contour on the blank plate.

[0018] S2: Cutting side flash and punching connecting holes: At the cutting side flash and punching connecting holes station of the progressive die, the side cutting punch of the upper die and a pair of connecting hole punches cooperate with the lower die to cut off the flash between two adjacent products on the blank plate and to open a pair of connecting holes on the blank plate.

[0019] S3: Blank surface pressing: At the surface pressing station of the progressive die, the surface pressing head of the upper die is used in conjunction with the lower die to press the blank plate and flatten it.

[0020] S4: Ear plate punching: At the ear plate punching station of the progressive die, a pair of ear plate punches of the upper die are used to cooperate with the lower die to align with the positioning hole position and punch the positioning hole to form the ear plate hole of the U-shaped clamping plate.

[0021] S5: Flange bending: At the flange bending station of the progressive die, a pair of flange bending punches of the upper die are used in conjunction with the lower die to punch and bend the outer contour of the product on the blank plate downward to form the flange bending edge of the U-shaped clamp.

[0022] S6: Trimming the flash at the end: At the trimming the flash station of the progressive die, the flash punches of the upper die are used in conjunction with the lower die to cut off the flash at the end of the product on the blank plate, so that the U-shaped clamping plate forms a blank on the progressive die.

[0023] S7: Ear plate bending: The blank formed on the progressive die is put into the ear plate bending machine. The ear plate structure at the end of the blank is bent by the die of the ear plate bending machine to realize the ear plate bending of the U-shaped clamp.

[0024] S8: Pressing the reinforcing rib: After completing step S7, the U-shaped clamp blank is placed into the mold for pressing the reinforcing rib. The circumferential stamping is performed at a pair of connecting holes on the U-shaped clamp blank to form a reinforcing protrusion structure on the back of the U-shaped clamp blank, thus completing the forming of the entire antenna bracket U-shaped clamp.

[0025] The advantages of this invention are:

[0026] 1) In the present invention, the U-shaped clamp with the bent flange structure needs to be stamped and bent during the stamping process. However, the conventional U-shaped clamp blank has straight edges and the blank forming mold is simple, which cannot meet such production requirements. In addition, the product adopts a progressive die forming method during the forming process. After continuous punching and trimming, a pressing station is designed to ensure the flatness of the structure and prevent deformation due to material extension.

[0027] 2) The U-shaped clamping plate in this invention mainly involves three parts in its forming process. The first part involves punching and flange stamping and bending on a progressive die. The second part involves forming the ear plate in an ear plate bending machine. The third part involves pressing the reinforcing ribs in a mold. This forming process firstly uses the flange bending method to form a U-shaped clamping plate from a thin blank to meet the basic strength requirements, ensuring that the flange will not crack at the ear plate bending position. Secondly, reinforcing ribs are pressed out at the connecting holes, and the position of the reinforcing ribs at the bending point enhances the connection strength at the bending point. This forming process realizes the production of high-strength U-shaped clamping plates from thin blanks. Under the same connection strength, the thickness of the blank can be reduced from 6mm to 3mm, which greatly saves materials and reduces costs. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a side view of a U-shaped clamp forming mold for an antenna bracket according to the present invention.

[0030] Figure 2 This is a drawing of the strip material for a U-shaped clamp forming mold for an antenna bracket according to the present invention.

[0031] Figure 3 This is a diagram showing the forming state of a U-shaped clamp for an antenna support according to the present invention.

[0032] Figure 4 This is a flowchart illustrating the forming process of a U-shaped clamp for an antenna bracket according to the present invention.

[0033] Figure 5 This is a forming state diagram (S7) of a U-shaped clamp forming process for an antenna bracket according to the present invention.

[0034] Figure 6 This is a forming state diagram (S8) of a U-shaped clamp forming process for an antenna bracket according to the present invention.

[0035] Figure 7 This is a structural diagram of a U-shaped clamp for an antenna support according to the present invention. Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] like Figures 1 to 7 The U-shaped clamp forming mold for an antenna bracket shown includes a frame 1, an upper mold 2 and a lower mold 3; the upper mold 2 and the lower mold 3 are respectively set on the frame 1, and a forming channel for accommodating the blank plate is formed between the upper mold 2 and the lower mold 3.

[0039] In this embodiment, the frame 1 is provided with punching needle hole and outer contour station 11, side trimming flash and connecting hole punching station 12, surface pressing station 13, ear plate hole punching station 14, flange bending station 15, empty station 16 and end trimming flash station 17 in sequence according to the forming process.

[0040] In this embodiment, the upper mold 2 and lower mold 3 that cooperate with the blank plate are provided at the punching pin hole and outer contour station 11, the side trimming flash and connecting hole punching station 12, the surface pressing station 13, the ear plate hole punching station 14, the flange bending station 15 and the end trimming flash station 17.

[0041] In this embodiment, the upper mold of the punching pin hole and outer contour station 11 is provided with a positioning hole punch 111 and an outer contour punching punch 112. The positioning hole punch 111 cooperates with the lower mold to form a positioning hole on the blank plate, and the outer contour punching punch 112 cooperates with the lower mold to form the outer contour of the U-shaped clamping plate on the blank plate.

[0042] In this embodiment, the upper mold of the side cutting punch and connecting hole punching station 12 is provided with a side cutting punch 121 and a pair of connecting hole punches 122. The side cutting punch 121 cooperates with the lower mold to cut off the flash between two adjacent products of the blank; the connecting hole punches 122 cooperate with the lower mold to open a pair of connecting holes on the blank.

[0043] In this embodiment, the upper mold of the surface pressing station 13 is provided with a surface pressing head 131, which cooperates with the lower mold to flatten the blank plate.

[0044] In this embodiment, the upper mold of the ear plate hole punching station 14 is provided with a pair of ear plate hole punches 141, and the ear plate hole punches 141 are aligned with the positioning holes on the blank and cooperate with the lower mold to enlarge the positioning holes to form ear plate holes.

[0045] In this embodiment, a pair of flange bending punches 151 are provided on the upper mold of the flange bending station 15. The flange bending punches 151 cooperate with the lower mold to punch and bend the flange edge at the outer contour of the blank plate downward.

[0046] In this embodiment, a pair of ear plate flash punches 171 are provided on the upper mold of the flash cutting station 17. The ear plate flash punches 171 cooperate with the lower mold to cut off the flash at both ends of the product.

[0047] In this embodiment, a buffer cylinder 161 is provided at the empty station 16, and the buffer cylinder 161 is set on the upper mold of the empty station 16 to achieve the pressing of the product.

[0048] In this embodiment, an ejector cylinder 172 is provided on the lower mold at the end-cutting flash station 17, and the ejector cylinder 172 ejects the product after the end flash is removed at the end-cutting flash station 17.

[0049] A U-shaped clamp forming process for an antenna bracket, the specific process is as follows:

[0050] S1: Punching pin holes and outer contour: The processed blank plate is inserted into the progressive die from the inlet direction of the progressive die; at the punching pin hole and outer contour station of the progressive die, the positioning hole punch of the upper die and a pair of outer contour punching punches cooperate with the lower die to form a pair of positioning holes and a U-shaped clamping plate blank plate outer contour on the blank plate.

[0051] S2: Cutting side flash and punching connecting holes: At the cutting side flash and punching connecting holes station of the progressive die, the side cutting punch of the upper die and a pair of connecting hole punches cooperate with the lower die to cut off the flash between two adjacent products on the blank plate and to open a pair of connecting holes on the blank plate.

[0052] S3: Blank surface pressing: At the surface pressing station of the progressive die, the surface pressing head of the upper die is used in conjunction with the lower die to press the blank plate and flatten it.

[0053] S4: Ear plate punching: At the ear plate punching station of the progressive die, a pair of ear plate punches of the upper die are used to cooperate with the lower die to align with the positioning hole position and punch the positioning hole to form the ear plate hole of the U-shaped clamping plate.

[0054] S5: Flange bending: At the flange bending station of the progressive die, a pair of flange bending punches of the upper die are used in conjunction with the lower die to punch and bend the outer contour of the product on the blank plate downward to form the flange bending edge of the U-shaped clamp.

[0055] S6: Trimming the flash at the end: At the trimming the flash station of the progressive die, the flash punches of the upper die are used in conjunction with the lower die to cut off the flash at the end of the product on the blank plate, so that the U-shaped clamping plate forms a blank on the progressive die.

[0056] S7: Ear plate bending: The blank formed on the progressive die is put into the ear plate bending machine. The ear plate structure at the end of the blank is bent by the die of the ear plate bending machine to realize the ear plate bending of the U-shaped clamp.

[0057] S8: Pressing the reinforcing rib: After completing step S7, the U-shaped clamp blank is placed into the mold for pressing the reinforcing rib. The circumferential stamping is performed at a pair of connecting holes on the U-shaped clamp blank to form a reinforcing protrusion structure on the back of the U-shaped clamp blank, thus completing the forming of the entire antenna bracket U-shaped clamp.

[0058] The working principle of this invention is as follows: When stamping a U-shaped clamp with a bent flange structure, the stamping and bending of the flange structure are required. However, conventional U-shaped clamp blanks have straight edges and simple blank forming molds, which cannot meet such production requirements. In addition, the product adopts a progressive die forming method during the forming process. After continuous punching and trimming, a pressing station is designed to ensure the flatness of the structure and prevent deformation due to material elongation.

[0059] The forming of U-shaped clamps mainly involves three parts. The first part involves punching and flange forming and bending on a progressive die. The second part involves forming ear plates from the blank in an ear plate bending machine. The third part involves pressing reinforcing ribs in a mold. This forming process first uses flange bending to form U-shaped clamps from thin blanks that meet basic strength requirements, ensuring that the flanges will not crack at the ear plate bending position. On the other hand, reinforcing ribs are pressed out at the connecting holes to enhance the connection strength at the bending point. This forming process enables the production of high-strength U-shaped clamps from thin blanks. Under the same connection strength, the blank thickness can be reduced from 6mm to 3mm, greatly saving materials and reducing costs.

[0060] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A U-shaped clip plate forming die for an antenna support, characterized by: The utility model relates to a kind of progressive die for forming U-shaped clamp plate, including rack, upper die and lower die;The upper die and lower die are respectively arranged on rack, and the upper die and lower die form a forming channel accommodating blank plate between them; The rack is sequentially provided with punch needle hole and outer contour station, cut side flash and connecting hole punching station, face pressing station, ear plate hole punching station, flange bending station, empty station and cut end flash station according to forming process; The punch needle hole and outer contour station, cut side flash and connecting hole punching station, face pressing station, ear plate hole punching station, flange bending station and cut end flash station are provided with upper die and lower die matched with blank plate; The upper die of punch needle hole and outer contour station is provided with positioning hole punch and a pair of outer contour punching and cutting punch, the positioning hole punch is matched with lower die to form positioning hole on blank plate, and the outer contour punching and cutting punch is matched with lower die to form the outer contour of U-shaped clamp plate on blank plate; The upper die of cut side flash and connecting hole punching station is provided with a side cutting punch and a pair of connecting hole punches, the side cutting punch is matched with lower die to cut off the flash between adjacent two products of blank, and the connecting hole punch is matched with lower die to open a pair of connecting holes on blank; The upper die of face pressing station is provided with face pressing punch, and the face pressing punch is matched with lower die to press blank plate flat; The upper die of ear plate hole punching station is provided with a pair of ear plate hole punches, and the ear plate hole punches are matched with lower die at positioning hole on blank to form ear plate hole by reaming positioning hole; The upper die of flange bending station is provided with a pair of flange bending punches, and the flange bending punches are matched with lower die to realize downward stamping and bending of flange edge at outer contour of blank plate; The upper die of cut end flash station is provided with a pair of ear plate flash punches, and the ear plate flash punches are matched with lower die to realize cutting of flash at both ends of product.

2. The U-shaped clip plate forming die for an antenna support according to claim 1, characterized by: The empty station is provided with buffer cylinder, and the buffer cylinder is arranged on the upper die of empty station to realize pressing of product.

3. The U-shaped clip plate forming die for an antenna support according to claim 1, characterized by: The lower die of cut end flash station is provided with ejector cylinder, and the ejector cylinder is ejected after cutting of flash at both ends of product is completed.

4. A U-clip forming process for an antenna support characterized by: Specific process is as follows: S1: punch needle hole and outer contour: after processing, blank plate is inserted into progressive die from the direction of inlet of progressive die;In punch needle hole and outer contour station of progressive die, positioning hole punch and a pair of outer contour punching and cutting punches of upper die are matched with lower die to form a pair of positioning holes on blank plate and U-shaped clamp plate blank-shaped outer contour; S2: cut side flash punch connecting hole: in cut side flash and connecting hole punching station of progressive die, side cutting punch and a pair of connecting hole punches of upper die are matched with lower die to cut off the flash between adjacent two products of blank on blank plate and open a pair of connecting holes on blank plate; S3: blank face pressing: in face pressing station of progressive die, face pressing punch of upper die is matched with lower die to extrude blank plate and flatten blank plate; S4: ear plate punching: at the ear plate hole punching station of the progressive die, a pair of ear plate hole punches of the upper die cooperate with the lower die to align and position the hole, expand and punch the positioning hole, and form the ear plate hole of the U-shaped clamp plate; S5: flange bending: at the flange bending station of the progressive die, a pair of flange bending punches of the upper die cooperate with the lower die to punch and bend the outer contour of the blank plate downward to form the flange bending edge of the U-shaped clamp plate; S6: cutting end flash: at the cutting end flash station of the progressive die, a pair of ear plate flash punches of the upper die cooperate with the lower die to cut off the flash at the end of the product on the blank plate, and realize the forming of the U-shaped clamp plate on the progressive die; S7: ear plate bending: the blank formed on the progressive die is put into the ear plate bending machine, the ear plate structure at the end of the blank is bent by the die of the ear plate bending machine, and the ear plate bending of the U-shaped clamp plate is realized; S8: pressing reinforcing rib: after completing the step S7, the U-shaped clamp plate blank formed is put into the die for pressing reinforcing rib, and the U-shaped clamp plate blank is punched circumferentially at a pair of connecting holes to form a reinforcing convex structure on the back surface of the U-shaped clamp plate blank, and the forming of the entire U-shaped clamp plate for the antenna support is completed.

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