Communication equipment antenna based on profile molding and manufacturing method thereof

Abstract

The invention relates to a communication equipment antenna based on profile molding and a manufacturing method thereof. The method comprises the following steps: providing a T-shaped aluminum alloy profile; the T-shaped aluminum alloy section is placed on a first stamping station on a stamping die, a first preset position of the protruding part is stamped, a first punched hole and a first punched groove are formed in the protruding part, and the distance between at least part of the first punched hole and the side wing part and the distance between at least part of the first punched groove and the side wing part are smaller than a first preset height; the aluminum alloy profile is fed into a second stamping station on the stamping die, and the two sides of the side wing part are punched; and the aluminum alloy profile is fed into a bending station, the side wing parts are bent, bent parts are formed, and the communication equipment antenna is obtained. Compared with a traditional CNC milling machining mode, the E-shaped communication equipment antenna is formed by stamping and bending the formed T-shaped aluminum alloy profile, the manufacturing efficiency can be effectively improved, and the formed communication equipment antenna is more stable in structure and higher in yield.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing antennas for communication equipment, and in particular to a communication equipment antenna based on profile molding and a manufacturing method thereof. Background Art

[0002] The tiny, thin-walled frames used in communication base station antennas serve as both structural components and functional components for transmitting electrical signals. To meet the requirements of high-frequency electromagnetic signal environments, they are made from a non-magnetic aluminum-based alloy with a low hardness (58-75HB). These products feature complex structural shapes, thin materials, and compact dimensions. Stringent requirements are imposed on machining tolerances, both in terms of form and position, as well as the degree of post-machining deformation.

[0003] To produce this tiny thin-walled frame, there are currently two main conventional processing technologies:

[0004] 1. CNC milling of a monolithic aluminum block. This process uses a CNC machining center to mill a single aluminum alloy block into the final product structure. The advantages of this process are simpler process design and the ability to quickly respond to product development needs. However, the disadvantages are that CNC milling requires a large amount of material, resulting in long processing times and low production efficiency. Furthermore, the CNC milling process generates significant heat, and the removal of a large amount of material disrupts the inherent stress balance of the material, which can easily lead to localized deformation of the product and make it difficult to guarantee overall product accuracy.

[0005] 2. CNC milling of aluminum profiles. Suitable for high-volume production, this process involves first creating an aluminum profile mold. Using a hot extrusion process, the aluminum alloy bar is heated and drawn into an aluminum profile blank with the product's primary cross-sectional shape. A CNC machining center then partially mills the blank to remove excess structural material, resulting in the final product. The advantage of this process is that the aluminum profile, formed through hot extrusion, already has the product's primary cross-sectional shape, significantly reducing the amount of cutting required during subsequent CNC milling. This process also allows for more effective control of dimensional accuracy and product deformation. However, due to the thin walls of the micro-thin-walled frame, CNC milling is slow, which can easily lead to localized deformation of the cavity wall and lower production efficiency.

[0006] The above two processing technologies both use CNC milling, and have a common hazard: the chemical liquids such as cooling and lubrication used in CNC processing will have a very bad impact on operators and the environment. Summary of the Invention

[0007] Based on this, it is necessary to provide a method for manufacturing a communication device antenna based on profile forming.

[0008] A method for manufacturing a communication equipment antenna based on profile forming, comprising:

[0009] A T-shaped aluminum alloy profile is provided, wherein the T-shaped aluminum alloy profile comprises a side wing portion and a raised portion connected integrally, the raised portion is protrudingly provided in the middle of the side wing portion, and the raised portion has a protruding direction perpendicular to the side wing portion;

[0010] Placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, and using a punch on the first stamping station to stamp a first preset position of the protrusion to form a first punched hole and a first punched groove on the protrusion, wherein the distance between at least part of the first punched hole and the first punched groove and the side wing portion is less than a first preset height;

[0011] The aluminum alloy profile is turned over and sent to the second stamping station on the stamping die, and the two sides of the side wing portion are punched by the punch on the second stamping station to form a second punched hole and a second punched groove on both sides of the side wing portion respectively;

[0012] The aluminum alloy profile is sent to a bending station, and the side wing portions of the aluminum alloy profile are bent to form bent portions on the side wing portions on both sides, so that the bent portions, the side wing portions and the raised portions are arranged in an E shape to obtain a communication device antenna, wherein the bent portions are perpendicular to the side wing portions, and the height of the bent portions protruding from the side wing portions is greater than the first preset height.

[0013] In one embodiment, the step of providing a T-shaped aluminum alloy profile comprises:

[0014] Provide aluminum alloy billets;

[0015] The aluminum alloy billet is heated to a plastic state by adopting an extrusion process, and the aluminum alloy billet in the plastic state is fed into an extruder for extrusion molding to obtain a T-shaped aluminum alloy profile.

[0016] In one embodiment, the step of placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, and using a punch on the first stamping station to stamp a first preset position of the protrusion, to form a first punched hole and a first punched groove on the protrusion includes:

[0017] Placing the T-shaped aluminum alloy profile on the first stamping station of the stamping die, inserting one side of the wing portion into the first positioning groove of the first stamping station, and pressing the protruding portion downward with the first positioning block;

[0018] The first preset position of the protrusion is punched by using the punch on the first punching station to form a first punch hole and a first punch groove on the protrusion.

[0019] In one embodiment, the step of using the punch on the first punching station to punch the first preset position of the protrusion to form a first punched hole and a first punched groove on the protrusion includes:

[0020] When the punch on the first punching station moves downward to contact the protrusion, the first positioning block is controlled to move upward and away from the protrusion;

[0021] The punch on the first punching station punches the first preset position of the protrusion to form a first punching hole and a first punching groove on the protrusion;

[0022] Controlling the first positioning block to move downward to press the raised portion again;

[0023] The punch on the first punching station moves upward and separates from the raised portion.

[0024] In one embodiment, the step of flipping the aluminum alloy profile and feeding it into the second stamping station on the stamping die, punching both sides of the wing portion using the punch on the second stamping station, and forming a second punched hole and a second punched groove on both sides of the wing portion includes:

[0025] Placing the T-shaped aluminum alloy profile on the second stamping station of the stamping die, inserting the protrusion into the second positioning groove of the second stamping station, and pressing the two sides of the side wing portion downwardly with the downward second positioning block;

[0026] The punch on the second punching station is used to punch out the two sides of the side wing portion, thereby forming a second punched hole and a second punched groove on the two sides of the side wing portion respectively.

[0027] In one embodiment, the step of punching both sides of the wing portion using the punch on the second punching station to form a second punched hole and a second punched groove on both sides of the wing portion includes:

[0028] When the punch on the second punching station moves downward to contact both sides of the side wing portion, the second positioning block is controlled to move upward and away from the side wing portion;

[0029] The punch on the second punching station punches both sides of the side wing portion to form a second punch hole and a second punch groove on the side wing portion;

[0030] Control the second positioning block downward to press the two sides of the side wing again;

[0031] The punch on the second punching station moves upward and away from both sides of the wing portion.

[0032] In one embodiment, after the punch on the second punching station forms a punching groove, at least a portion of the second punching groove separates the edge of the side wing portion into a bent sub-portion and a bent main portion, wherein each of the bent sub-portion and each of the bent main portions is connected to the side wing portion, and the width of each of the bent sub-portion is smaller than the width of the bent main portion;

[0033] The step of feeding the aluminum alloy profile into a bending station and bending the side wing portions of the aluminum alloy profile to form bent portions on the side wing portions on both sides includes:

[0034] Feeding the aluminum alloy profile into a bending station, and bending each bending sub-portion of the aluminum alloy profile in a first direction so that the bending sub-portion is perpendicular to the side wing portion;

[0035] The aluminum alloy profile is reversed, and each bent main body portion of the aluminum alloy profile is bent toward a second direction so that the bent main body portion is perpendicular to the side wing portion, wherein the second direction is opposite to the second direction.

[0036] In one embodiment, after placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, stamping the first preset position of the protrusion with a punch on the first stamping station, and forming a first punched hole and a first punched groove on the protrusion, the step further includes:

[0037] flashing the edges of the first punched hole and the first punched groove;

[0038] After the step of flipping the aluminum alloy profile and feeding it into the second stamping station on the stamping die, punching both sides of the wing portion using the punch on the second stamping station to form a second punched hole and a second punched groove on both sides of the wing portion, the step further includes:

[0039] The edges of the second punch hole and the second punch groove are flashed.

[0040] In one embodiment, the material of each punch of the stamping die is one of 45 steel, Cr12, Cr12MoV, D2, and DC53.

[0041] A communication device antenna based on profile forming is manufactured using the communication device antenna manufacturing method based on profile forming described in any of the above embodiments.

[0042] Compared with the traditional CNC milling method, the above-mentioned method for manufacturing communication equipment antennas based on profile forming uses a formed T-shaped aluminum alloy profile to stamp and bend to form an E-shaped communication equipment antenna, which can effectively improve manufacturing efficiency and make the formed communication equipment antenna structure more stable and have a higher yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 This is a flow chart of a method for manufacturing a communication device antenna based on profile forming according to one embodiment;

[0045] Figure 2A This is a schematic structural diagram of a T-shaped aluminum alloy profile according to one embodiment;

[0046] Figure 2B This is a schematic structural diagram of a T-shaped aluminum alloy profile after punching in one embodiment;

[0047] Figure 2C Schematic diagram of the structure of an aluminum alloy profile after the first bending process according to an embodiment;

[0048] Figure 2D Schematic diagram of the structure of an aluminum alloy profile after a second bending process according to an embodiment.

[0049] Description of reference numerals:

[0050] 10. Aluminum alloy profile; 100. Raised portion; 200. Side wing portion; 110. First punched hole; 120. First notch; 210. Second punched hole; 220. Second notch; 310. Bend sub-portion; 320. Bend main portion; DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] like Figure 1 As shown, a method for manufacturing a communication device antenna based on profile forming according to an embodiment of the present invention includes:

[0053] Step 110, providing a T-shaped aluminum alloy profile, wherein the T-shaped aluminum alloy profile includes a side wing portion and a protruding portion that are integrally connected, the protruding portion is protruded in the middle of the side wing portion, and the protruding direction of the protruding portion is perpendicular to the side wing portion.

[0054] like Figure 2A As shown, the T-shaped aluminum alloy profile 10 includes a side wing portion 200 and a protruding portion 100 that are integrally connected. The protruding portion 100 is protruded in the middle of the side wing portion 200 , and the protruding direction of the protruding portion 100 is perpendicular to the side wing portion 200 .

[0055] Step 120: Place the T-shaped aluminum alloy profile on the first stamping station on the stamping die, and use the punch on the first stamping station to punch the first preset position of the protrusion to form a first hole and a first groove on the protrusion, wherein the distance between at least part of the first hole and the first groove and the side wing portion is less than the first preset height.

[0056] Step 130, flip the aluminum alloy profile and send it to the second stamping station on the stamping die, use the punch on the second stamping station to punch the two sides of the side wing part, and form a second punched hole and a second punched groove on both sides of the side wing part respectively.

[0057] like Figure 2B As shown, after punching, a first punch hole 110 and a first punch groove 120 are formed on the protruding portion 100 , and a second punch hole 210 and a second punch groove 220 are formed on the wing portion 200 .

[0058] Step 140: Send the aluminum alloy profile into a bending station and bend the side wing portion of the aluminum alloy profile to form a bending portion on the side wing portion on both sides, so that the bending portion, the side wing portion and the protruding portion are arranged in an E shape to obtain a communication device antenna, wherein the bending portion is perpendicular to the side wing portion, and the height of the bending portion protruding from the side wing portion is greater than the first preset height.

[0059] like Figure 2D As shown, after bending, the communication equipment antenna is in an E shape.

[0060] In this embodiment, the cross-section of the aluminum alloy profile is T-shaped. The aluminum alloy profile is formed by extrusion. Since it is pre-formed before stamping, the subsequent stamping, burring and bending efficiency can be higher, and excessive consumables are avoided from being milled away, so that the material utilization rate is higher. In addition, stamping and bending from T-shape to E-shape can effectively reduce the processing volume and effectively avoid deformation caused by large-scale stress changes caused by large-scale milling, so that the aluminum alloy profile can always maintain a stable structure without deformation during the processing process.

[0061] In this embodiment, the material of the aluminum alloy profile is a non-magnetic aluminum-based alloy. The hardness of the non-magnetic aluminum-based alloy is 58-75HB, which is relatively low. Therefore, if CNC processing is used, it is easy to cause the profile to deform. The wall thickness of the aluminum alloy profile is 0.5mm, and the overall structure is a slender strip with an overall length of about 300 to 1000mm.

[0062] A raised portion is provided in the middle of the T-shaped aluminum alloy profile, and the raised portion is perpendicular to the side wing portion to form a T-shaped structure. It is worth mentioning that if the side wing portion is bent first, and then the raised portion and the side wing portion are stamped, the position (root) of the raised portion close to the side wing portion will be blocked by the bent portion, resulting in the root of the raised portion being unable to be stamped or being inconvenient to stamp. In this embodiment, when the raised portion is stamped, a portion of the first punching holes and the first punching grooves on the raised portion are located close to the side wing portion, that is, the distance between a portion of the first punching holes or a portion of the first punching grooves and the side wing portion is less than a first preset height, and the first preset height is less than the height of the bent portion protruding from the side wing portion. In this way, the root of the raised portion can be stamped first before the two sides of the side wing portion are bent, thereby avoiding the problem of being unable to be stamped due to being blocked by the bent portion.

[0063] In this embodiment, the raised portion in the middle is first punched, and the lower position (root) of the raised portion is punched to avoid the problem that the bent portion blocks the root of the raised portion and the root position cannot be punched. Subsequently, the side wing portion is punched to form a second punched hole and a second punched groove on the side wing portion. Subsequently, the two side edges of the side wing portion are bent to form a bent portion, so that the aluminum alloy profile is formed into an E shape, thereby obtaining a communication equipment antenna.

[0064] It is worth mentioning that in this embodiment, the aluminum alloy profile is processed by stamping and punching. Compared with the large number of processing steps of CNC milling, the stamping process has a smaller workload and higher precision. Since a semi-finished T-shaped aluminum alloy profile is used, and the protrusion and the side wing are stamped separately, the stamping process and position are decomposed, so that the stress is dispersed, avoiding the deformation of the aluminum alloy profile caused by stress accumulation, thereby effectively improving the production efficiency and the product yield of the antenna.

[0065] In the above embodiment, compared with the traditional CNC milling method, the E-shaped communication equipment antenna is formed by stamping and bending the formed T-shaped aluminum alloy profile, which can effectively improve the manufacturing efficiency and make the formed communication equipment antenna structure more stable and have a higher yield rate.

[0066] In one embodiment, the step of providing a T-shaped aluminum alloy profile includes: providing an aluminum alloy billet; heating the aluminum alloy billet to a plastic state using an extrusion process, and feeding the plastic aluminum alloy billet into an extruder for extrusion molding to obtain a T-shaped aluminum alloy profile.

[0067] In this embodiment, an extrusion process is used to extrude an aluminum alloy billet into a T-shaped aluminum alloy profile. Specifically, the aluminum alloy billet is first heated to a plastic state, and then the plastic aluminum alloy billet is extruded using an extruder to form a T-shaped aluminum alloy profile. The T-shaped aluminum alloy profile is a semi-finished product before stamping. Extrusion molding makes its structure more stable and less prone to damage compared to CNC milling. It also avoids stress concentration and reduces the workload of subsequent processes.

[0068] In one embodiment, the step of placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, and using a punch on the first stamping station to stamp a first preset position of the protrusion, to form a first punched hole and a first punched groove on the protrusion includes:

[0069] Placing the T-shaped aluminum alloy profile on the first stamping station of the stamping die, inserting one side of the wing portion into the first positioning groove of the first stamping station, and pressing the protruding portion downward with the first positioning block;

[0070] The first preset position of the protrusion is punched by using the punch on the first punching station to form a first punch hole and a first punch groove on the protrusion.

[0071] In this embodiment, the upper die and the lower die of the first stamping station are respectively provided with a first positioning groove. Before stamping, one side of the side wing is first inserted into the first positioning groove of the lower die, and the first positioning groove of the lower die is used to clamp and fix one side of the side wing, so that the T-shaped aluminum alloy profile is fixed. Then, when the upper die drives the punch to punch the aluminum alloy profile, the first positioning groove of the upper die is aligned with the other side of the side wing, so that the other side of the side wing is inserted into the first positioning groove of the upper die. At the same time, the upper die drives the first positioning block downward to press the protrusion. In this way, during the punching process, the two sides of the side wing are respectively inserted into the first positioning groove of the lower die and the first positioning groove of the upper die, so that both sides of the side wing are clamped and fixed, and the first positioning block presses the protrusion, so that the aluminum alloy profile is fully fixed, thereby making the punching of the protrusion more accurate. It is worth mentioning that, during the punching process of the raised portion, the first positioning groove is used to limit the side wing portion to prevent the side wing portion from being displaced in the first direction in the horizontal direction, and the first positioning block presses the raised portion, which can effectively prevent the raised portion from warping in the vertical direction, and can also prevent the raised portion from being displaced in the first and second directions in the horizontal direction, thereby making the punching of the raised portion more precise.

[0072] In one embodiment, the step of punching the first preset position of the protrusion using the punch on the first punching station to form a first punched hole and a first punched groove on the protrusion includes:

[0073] When the punch on the first punching station moves downward to contact the protrusion, the first positioning block is controlled to move upward and away from the protrusion;

[0074] The punch on the first punching station punches the first preset position of the protrusion to form a first punching hole and a first punching groove on the protrusion;

[0075] Controlling the first positioning block to move downward to press the raised portion again;

[0076] The punch on the first punching station moves upward and separates from the raised portion.

[0077] In this embodiment, before the first stamping station punches the protrusion, the first positioning block is first used to press the protrusion downward, which can effectively prevent the protrusion from being displaced. When the punch of the first stamping station moves downward and contacts the protrusion, the first positioning block moves upward, and the punch of the first stamping station punches the protrusion. It is worth mentioning that during the punch punching of the protrusion, the first positioning block temporarily separates from the protrusion. The reason is that the moment the punch punches the protrusion will cause local deformation and stress on the protrusion, and after the first positioning block separates from the protrusion, the stress is released. In this way, the stress superposition caused by pressing and punching can be avoided, and stress concentration can be avoided. In addition, the stress concentration can be avoided from reacting to the punch, preventing the punch from being subjected to the lateral reaction force of the aluminum alloy profile, avoiding damage to the punch caused by the reaction force generated by long-term use, avoiding the impact on the accuracy of the punch, and extending the service life of the punch. Moreover, when the first positioning block separates from the protrusion, the punch plays a positioning role on the protrusion, preventing the protrusion from moving laterally. When the punch completes the punching of the raised portion, the punch moves upward and the first positioning block moves downward. Before the punch separates from the raised portion, the first positioning block presses both sides of the raised portion again. It is worth mentioning that before the punch separates from the raised portion, the first positioning block presses both sides of the raised portion again, which can effectively press and fix the raised portion. Since the punching action has been completed, the stress generated by the punching has also been released. At this time, the first positioning block is pressed on the raised portion, and the punch continues to move upward, which can effectively avoid the force generated when the punch separates from causing the raised portion to move laterally, thereby keeping the raised portion stable, thereby accurately forming the first punch hole and the first punch groove on the raised portion.

[0078] In one embodiment, the step of flipping the aluminum alloy profile and feeding it into the second stamping station on the stamping die, punching both sides of the wing portion using the punch on the second stamping station, and forming a second punched hole and a second punched groove on both sides of the wing portion includes:

[0079] Placing the T-shaped aluminum alloy profile on the second stamping station of the stamping die, inserting the protrusion into the second positioning groove of the second stamping station, and pressing the two sides of the side wing portion downwardly with the downward second positioning block;

[0080] The punch on the second punching station is used to punch out the two sides of the side wing portion, thereby forming a second punched hole and a second punched groove on the two sides of the side wing portion respectively.

[0081] In this embodiment, the lower die of the second stamping station is provided with a second positioning groove. Before punching the side of the aluminum alloy profile, the T-shaped aluminum alloy profile is turned upside down, and the protrusion is inserted into the second positioning groove. The protrusion is clamped and fixed by the second positioning groove of the lower die, so that the T-shaped aluminum alloy profile is fixed. Subsequently, when the upper die drives the punch to punch the aluminum alloy profile, the upper die drives the second positioning block downward to press the side wing. In this way, during the punching process, the protrusion is inserted into the second positioning groove of the lower die, so that the protrusion is clamped and fixed, and the second positioning block presses the side wing, so that the aluminum alloy profile is fully fixed, thereby making the punching of the side wing more accurate. It is worth mentioning that, during the punching process of the side wing, the second positioning groove is used to limit the protrusion to prevent the protrusion from being displaced in the first direction in the horizontal direction, and the second positioning block presses the side wing, which can effectively prevent the side wing from warping in the vertical direction, and can also prevent the side wing from being displaced in the first and second directions in the horizontal direction, thereby making the punching of the side wing more precise.

[0082] In one embodiment, the step of punching both sides of the wing portion using the punch on the second punching station to form a second punched hole and a second punched groove on both sides of the wing portion includes:

[0083] When the punch on the second punching station moves downward to contact both sides of the side wing portion, the second positioning block is controlled to move upward and away from the side wing portion;

[0084] The punch on the second punching station punches both sides of the side wing portion to form a second punch hole and a second punch groove on the side wing portion;

[0085] Control the second positioning block downward to press the two sides of the side wing again;

[0086] The punch on the second punching station moves upward and away from both sides of the wing portion.

[0087] In this embodiment, before the second stamping station punches the side wing, the second positioning block is first used to press the side wing downward, which can effectively prevent the side wing from being displaced. When the punch of the second stamping station moves downward and contacts the side wing, the second positioning block moves upward, and the punch of the second stamping station punches the side wing. It is worth mentioning that during the punch punching of the side wing, the second positioning block temporarily separates from the side wing. The reason is that the moment the punch punches the side wing will cause local deformation and stress in the side wing, and after the second positioning block separates from the side wing, the stress is released. In this way, the superposition of stresses generated by pressing and punching can be avoided, and stress concentration can be avoided. In addition, stress concentration can be avoided from reacting to the punch, preventing the punch from being subjected to the lateral reaction force of the aluminum alloy profile, preventing the reaction force generated by long-term use from damaging the punch, preventing the accuracy of the punch from being affected, and extending the service life of the punch. Moreover, when the second positioning block separates from the side wing, the punch plays a positioning role on the side wing, preventing the side wing from shifting laterally. When the punch completes the punching of the side wing, the punch moves upward and the second positioning block moves downward. Before the punch detaches from the side wing, the second positioning block presses the two sides of the side wing again. It is worth mentioning that before the punch detaches from the side wing, the second positioning block presses the two sides of the side wing again, which can effectively press and fix the side wing. Since the punching action has been completed, the stress generated by the punching has also been released. At this time, the second positioning block is pressed on the side wing, and the punch continues to move upward, which can effectively avoid the force generated when the punch detaches from causing the side wing to move laterally, thereby keeping the side wing stable, thereby accurately forming the second punched hole and the second punched groove on the side wing.

[0088] In one embodiment, Figure 2C and Figure 2D As shown, the bending portion includes a bending sub-portion 310 and a bending main portion 320. After the punch on the second punching station punches, at least part of the second punch groove is formed to separate the edge of the side wing portion 200 into the bending sub-portion 310 and the bending main portion 320, wherein each of the bending sub-portion 310 and each of the bending main portions 320 is respectively connected to the side wing portion 200, and the width of each of the bending sub-portion 310 is smaller than the width of the bending main portion 320;

[0089] The step of feeding the aluminum alloy profile into a bending station and bending the side wing portion 200 of the aluminum alloy profile to form a bent portion on the side wing portion 200 on both sides includes:

[0090] Send the aluminum alloy profile to a bending station, and bend each bending sub-portion 310 of the aluminum alloy profile in a first direction so that the bending sub-portion 310 is perpendicular to the side wing portion 200;

[0091] The aluminum alloy profile is reversed, and each bent main portion 320 of the aluminum alloy profile is bent toward a second direction, such that the bent main portion 320 is perpendicular to the side wing portion 200 , wherein the second direction is opposite to the second direction.

[0092] like Figure 2C As shown, first, each of the bending sub-portions 310 of the aluminum alloy profile is bent in a first direction so that the bending sub-portion 310 is perpendicular to the side wing portion 200, and then, as shown in FIG. Figure 2D As shown, each of the bent main portions 320 of the aluminum alloy profile is bent toward the second direction so that the bent main portion 320 is perpendicular to the side wing portion 200 , thereby obtaining an E-shaped communication device antenna.

[0093] In this embodiment, the partial second punch groove formed by punching on the edge of the wing portion separates the edge of the wing portion into an unconnected bending sub-portion and a bending main body portion, wherein the width of the bending sub-portion is smaller, the width of the bending main body portion is larger, and the bending sub-portion and the bending main body portion are bent in opposite directions, for example, the bending sub-portion and the bending main body portion are both perpendicular to the wing portion, and the bending sub-portion is bent downward, and the bending main body portion is bent upward. In this embodiment, the bending sub-portion is bent first, and then the bending main body portion is bent. In this way, since the width of the bending sub-portion bent first is smaller, its material volume is small, and the local stress generated is low, which can avoid the instability of the wing portion caused by large stress, and the material flow resistance of the aluminum alloy profile is low when bending first, and the material can be accurately controlled to flow inwardly by compression of the bend, providing pre-deformation guidance for the subsequent bending main body portion.

[0094] , to avoid cracks caused by sudden flow of material when the bending main body is bent. In this way, during the bending process of the bending sub-part, the main body of the side wing part remains stable. Moreover, the bending sub-part and the bending main body are bent in steps, which can avoid the stress superposition problem caused by bending the wide and narrow parts at the same time, making the bending effect better and maintaining the structural stability of the side wing part. In addition, since the bending sub-part and the bending main body are bent in opposite directions, a torque balance is formed, which can effectively offset the elastic rebound.

[0095] In one embodiment, the T-shaped aluminum alloy profile is placed on the first stamping station on the stamping die, and the first preset position of the protrusion is stamped using the punch on the first stamping station. After the step of forming the first punched hole and the first groove on the protrusion, the step also includes: flashing the edges of the first punched hole and the first groove.

[0096] The aluminum alloy profile is flipped over and sent to the second stamping station on the stamping die, and the two sides of the side wing part are punched by the punch on the second stamping station. After the step of forming the second punching hole and the second punching groove on both sides of the side wing part respectively, the step also includes: flashing the edges of the second punching hole and the second punching groove.

[0097] In this embodiment, after the raised portion and the side wing portion are punched to form the first punched hole, the first punched groove, the second punched hole and the second punched groove respectively, the edges of the holes and grooves are respectively burred, which can effectively eliminate the burrs generated during the punching process of the holes and grooves, making the edges of the first punched hole, the first punched groove, the second punched hole and the second punched groove smoother, so that the electrical performance of the antenna is better.

[0098] In one embodiment, the material of each punch of the stamping die is one of 45 steel, Cr12, Cr12MoV, D2, and DC53.

[0099] In one embodiment, a communication device antenna based on profile forming is provided, which is manufactured using the communication device antenna manufacturing method based on profile forming described in any of the above embodiments.

[0100] It is worth mentioning that the tiny cavity used in the communication base station antenna has a very complex structural shape. Since it works in a high-frequency electromagnetic signal environment, magnetic materials cannot be used. At the same time, it is restricted by the use site and the weight needs to be strictly controlled. Therefore, non-magnetic aluminum-based alloy materials are selected. The material hardness is relatively low (58-75HB), the cavity wall thickness is 0.5mm, and the overall product is a slender strip structure with an overall length of approximately 300∽1000mm. The tiny frame works in a high-frequency electromagnetic signal environment. The product structure dimensional error, form and position error, and the height of the burr formed by processing all have a very large impact on its working performance. In order to meet the performance requirements, the product design technology requires a linear dimensional error of ≤±0.05mm, an overall linear error of ≤0.5mm in the natural state, and a height of the raised burr on the edge of the processed part of ≤0.05mm. Conventional processing technology is difficult to meet the technical requirements.

[0101] In this application, a profile stamping die is developed to meet these high-precision special requirements.

[0102] Profile stamping production involves extruding a prefabricated, pre-designed shape into a profile. Using a stamping die, the profile undergoes a series of punching, flashing, and shaping operations to meet the desired technical requirements. Die design follows the principle of punching first, flashing second, and flattening before forming the sidewalls. Materials used include 45 steel, Cr12, Cr12MoV, D2, and DC53.

[0103] In order to overcome the influence of linear error and distortion of aluminum profile on product processing accuracy, the mold is designed with a slider push positioning structure. When processing the product, the profile is first pressed tightly, and then the profile is precisely punched by the punch, so that the dimensional error of the product after punching is controlled within ±0.05mm.

[0104] The micro cavity is processed by the mold. To ensure the processing accuracy of the final product, the processing accuracy of the mold itself must be at least one order of magnitude higher than the product processing accuracy. For this reason, when processing the mold, the process of cutting one and repairing two is adopted to control the structural size error that affects the product processing accuracy to ±0.005mm. Through three times of fine grinding, the mold thickness processing error is controlled to ±0.002mm. Then, through the coordination and assembly of precise positioning holes and positioning pins, the processing and manufacturing accuracy of the entire mold is controlled at the micron level.

[0105] After testing, the processed tiny cavity has a linear error of structural dimensions ≤±0.03mm, a bending dimension error ≤±0.05mm, and a height of raised burrs on the edge of the processed part ≤0.03mm; the yield rate of each key dimension inspection is ≥99%, which can fully meet the product design technical requirements.

[0106] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for manufacturing a communication equipment antenna based on profile forming, characterized in that: include: A T-shaped aluminum alloy profile is provided, wherein the T-shaped aluminum alloy profile comprises a side wing portion and a raised portion connected integrally, the raised portion is protrudingly provided in the middle of the side wing portion, and the raised portion has a protruding direction perpendicular to the side wing portion; Placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, and using a punch on the first stamping station to stamp a first preset position of the protrusion to form a first punched hole and a first punched groove on the protrusion, wherein the distance between at least part of the first punched hole and the first punched groove and the side wing portion is less than a first preset height; The aluminum alloy profile is turned over and sent to the second stamping station on the stamping die, and the two sides of the side wing portion are punched by the punch on the second stamping station to form a second punched hole and a second punched groove on both sides of the side wing portion respectively; The aluminum alloy profile is sent to a bending station, and the side wing portions of the aluminum alloy profile are bent to form bent portions on the side wing portions on both sides, so that the bent portions, the side wing portions and the raised portions are arranged in an E shape to obtain a communication device antenna, wherein the bent portions are perpendicular to the side wing portions, and the height of the bent portions protruding from the side wing portions is greater than the first preset height.

2. The method for manufacturing a communication device antenna based on profile forming according to claim 1, characterized in that: The step of providing a T-shaped aluminum alloy profile comprises: Provide aluminum alloy billets; The aluminum alloy billet is heated to a plastic state by adopting an extrusion process, and the aluminum alloy billet in the plastic state is fed into an extruder for extrusion molding to obtain a T-shaped aluminum alloy profile.

3. The method for manufacturing a communication device antenna based on profile forming according to claim 1, characterized in that: The step of placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, and using a punch on the first stamping station to stamp a first preset position of the protrusion to form a first punched hole and a first punched groove on the protrusion comprises: Placing the T-shaped aluminum alloy profile on the first stamping station of the stamping die, inserting one side of the wing portion into the first positioning groove of the first stamping station, and pressing the protruding portion downward with the first positioning block; The punch on the first punching station is used to punch the first preset position of the protrusion to form a first punch hole and a first punch groove on the protrusion.

4. The method for manufacturing a communication device antenna based on profile forming according to claim 3, characterized in that: The step of punching the first preset position of the protrusion with the punch on the first punching station to form a first punched hole and a first punched groove on the protrusion includes: When the punch on the first punching station moves downward to contact the protrusion, the first positioning block is controlled to move upward and away from the protrusion; The punch on the first punching station punches the first preset position of the protrusion to form a first punching hole and a first punching groove on the protrusion; Controlling the first positioning block to move downward to press the raised portion again; The punch on the first punching station moves upward and separates from the raised portion.

5. The method for manufacturing a communication device antenna based on profile forming according to claim 1, characterized in that: The step of flipping the aluminum alloy profile and feeding it into the second stamping station on the stamping die, punching both sides of the wing portion with the punch on the second stamping station, and forming a second punched hole and a second punched groove on both sides of the wing portion comprises: Placing the T-shaped aluminum alloy profile on the second stamping station of the stamping die, inserting the protrusion into the second positioning groove of the second stamping station, and pressing the two sides of the side wing portion downwardly with the downward second positioning block; The punch on the second punching station is used to punch out the two sides of the side wing portion, thereby forming a second punched hole and a second punched groove on the two sides of the side wing portion respectively.

6. The method for manufacturing a communication device antenna based on profile forming according to claim 5, characterized in that: The step of punching both sides of the wing portion by using the punch on the second punching station to form a second punched hole and a second punched groove on both sides of the wing portion comprises: When the punch on the second punching station moves downward to contact both sides of the side wing portion, the second positioning block is controlled to move upward and away from the side wing portion; The punch on the second punching station punches both sides of the side wing portion to form a second punch hole and a second punch groove on the side wing portion; Control the second positioning block downward to press the two sides of the side wing again; The punch on the second punching station moves upward and away from both sides of the wing portion.

7. The method for manufacturing a communication device antenna based on profile forming according to any one of claims 1 to 6, characterized in that: After punching by the punch on the second punching station, at least part of the second punched groove is formed to separate the edge of the side wing portion into a bent sub-portion and a bent main portion, wherein each of the bent sub-portion and each of the bent main portions is connected to the side wing portion, and the width of each of the bent sub-portions is smaller than the width of the bent main portion; The step of feeding the aluminum alloy profile into a bending station and bending the side wing portions of the aluminum alloy profile to form bent portions on the side wing portions on both sides includes: Feeding the aluminum alloy profile into a bending station, and bending each bending sub-portion of the aluminum alloy profile in a first direction so that the bending sub-portion is perpendicular to the side wing portion; The aluminum alloy profile is reversed, and each bent main body portion of the aluminum alloy profile is bent toward a second direction so that the bent main body portion is perpendicular to the side wing portion, wherein the second direction is opposite to the second direction.

8. The method for manufacturing a communication device antenna based on profile forming according to any one of claims 1 to 6, characterized in that: After placing the T-shaped aluminum alloy profile on a first stamping station on a stamping die, and using a punch on the first stamping station to stamp a first preset position of the protrusion, and forming a first punched hole and a first punched groove on the protrusion, the method further includes: flashing the edges of the first punched hole and the first punched groove; After the step of flipping the aluminum alloy profile and feeding it into the second stamping station on the stamping die, punching both sides of the wing portion using the punch on the second stamping station to form a second punched hole and a second punched groove on both sides of the wing portion, the step further includes: The edges of the second punch hole and the second punch groove are flashed.

9. The method for manufacturing a communication device antenna based on profile forming according to any one of claims 1 to 6, characterized in that: The material of each punch of the stamping die is one of 45 steel, Cr12, Cr12MoV, D2, and DC53.

10. A communication equipment antenna based on profile forming, characterized in that: The antenna is manufactured by the method for manufacturing a communication device antenna based on profile forming as described in any one of claims 1 to 9.

Images