A grooving mechanism and a grooving and forming device for beautifying a semi-circular outer cover of an antenna

Abstract

The present invention discloses a grooving mechanism, which includes an arc-shaped stamping part for cutting an arc-shaped groove on the circumferential wall surface of a product with an arc-shaped structure, and the height of the arc-shaped stamping part gradually decreases from one end to the other end; the arc-shaped stamping part includes a front arc surface and a rear arc surface with the same radian around the same axis, the height of the front arc surface is less than the height of the rear arc surface, and the lower edge of the front arc surface is connected to the lower edge of the rear arc surface to form an arc-shaped grooving inclined surface; the present invention also discloses a grooving forming device for beautifying the semi-circular outer cover of an antenna. In the grooving mechanism of the present invention, an arc-shaped stamping part with an arc-shaped grooving inclined surface is adopted to smoothly stamp an arc-shaped groove on the axial wall surface of the product with an arc-shaped structure, and a linear stamping part for stamping a linear groove is provided, ensuring that under the same acting force, the pressure received by the product surface is increased, so as to quickly punch out the required groove position on the axial wall surface of the product and avoid affecting the grooving effect due to uneven force.

Description

Technical Field

[0001] The present invention relates to the field of beautifying antenna production, and particularly relates to a grooving mechanism and a grooving and forming device for a semi-circular outer cover of a beautifying antenna. Background Art

[0002] With the rapid development of industrial technology, the demand for beautifying antennas has increased year by year, and the quality of the semi-circular outer cover of the beautifying antenna has also been paid more and more attention. In order to facilitate the installation of cables and the outlet of cable wires, a grooving process needs to be carried out on the semi-circular outer cover, but the grooving process still poses extremely high technical challenges.

[0003] Most of the currently applied beautifying antennas adopt two slot processing methods: the first is the CNC processing method. However, during the processing, the CNC equipment cannot fix the semi-circular outer cover, and it is extremely easy to affect the grooving effect due to deviation. Moreover, the length of the CNC equipment is limited, and it cannot process a semi-circular outer cover exceeding 2 meters, resulting in high processing costs and low efficiency. The second is the electric drill processing method. Since the electric drill can only process circular holes and cannot process special-shaped slot holes, it is difficult to meet the processing requirements of customers, and it cannot accurately position the grooving position, cannot meet the tolerance index requirements, and the consistency of the processed products is poor.

[0004] Therefore, adopting the stamping processing technology is the development trend. However, punching an arc-shaped groove on the circumferential wall of a product with an arc-shaped structure is still a technical problem that is difficult to solve. Since the current punching heads only have ordinary conical punching heads and flat punching heads, and there is no arc-shaped punching head specifically used for punching an arc-shaped groove on the circumferential wall of the semi-circular outer cover, it is difficult to meet the actual production needs. If a flat punching head is used to punch a groove on the axial wall of the semi-circular outer cover, it is extremely easy to cause product deformation and damage due to excessive extrusion, thereby affecting the grooving effect, and the grooving accuracy and the qualified product rate cannot be guaranteed in mass production. And the existing grooving dies are restricted by the appearance contour of the product and can only process products with a planar structure, and cannot punch a semi-circular outer cover without damaging the product. Moreover, the products after grooving are prone to deformation and burrs, and the flatness is difficult to meet the requirements. Summary of the Invention

[0005] In order to overcome the above technical problems, the present invention discloses a grooving mechanism; and also discloses a grooving and forming device for a semi-circular outer cover of a beautifying antenna.

[0006] The technical solution adopted by the present invention to achieve the above object is:

[0007] A grooving mechanism includes an arc-shaped stamping part for cutting an arc-shaped groove on the circumferential wall of a product with an arc-shaped structure, and the height of the arc-shaped stamping part gradually decreases from one end to the other end;

[0008] The arc-shaped stamping part includes a front arc surface and a rear arc surface with the same radian around the same axis. The height of the front arc surface is less than that of the rear arc surface. The lower edges of the front arc surface and the rear arc surface are connected to form an arc-shaped punching groove inclined surface.

[0009] The above punching groove mechanism, in which a first linear stamping part for punching a linear groove on the axial wall surface of an arc-shaped structure product extends along the tangent direction of the arc-shaped stamping part. The first linear stamping part includes a front plane and a rear plane respectively extending from the front arc surface and the rear arc surface. The height of the front plane is less than that of the rear plane. The bottom surface between the front plane and the rear plane forms a linear punching groove inclined surface.

[0010] The above punching groove mechanism further includes a second linear stamping part arranged corresponding to the first linear stamping part. The structure of the second linear stamping part is the same as that of the first linear stamping part.

[0011] The above punching groove mechanism, in which a positioning protrusion is formed at one end of the second linear stamping part with a gradually increasing width along the length direction. The positioning protrusion includes two symmetrically arranged limiting inclined surfaces, and the two limiting inclined surfaces are respectively formed by extending outward along the length direction from the front plane and the rear plane of the second linear stamping part.

[0012] The above punching groove mechanism, in which the arc-shaped stamping part further includes a first side plane connected to the front arc surface and the rear arc surface and parallel to the front plane, and a second side plane is vertically connected to the front plane and the rear plane.

[0013] A punching groove forming device for beautifying the semi-circular outer cover of an antenna, which includes at least one group of the above punching groove mechanisms, and further includes an upper die assembly and a lower die assembly with corresponding fastening surfaces. The upper die assembly and the lower die assembly are guided and positioned by a plurality of guide columns;

[0014] The lower die assembly includes a lower template and a lower die base arranged in sequence from top to bottom. The fastening surface of the lower template is an arc-shaped convex surface;

[0015] The upper die assembly includes an upper die base, an upper clamping plate and a stripper plate arranged in sequence from top to bottom. The upper clamping plate and the stripper plate are connected by an elastic connecting piece. The fastening surface of the stripper plate is an arc-shaped concave surface corresponding to the arc-shaped convex surface. The punching groove mechanism is fixedly arranged on the upper clamping plate. A first through groove for the up and down movement of the punching groove mechanism is longitudinally penetrated through the stripper plate, and the shape of the first through groove is adapted to the shape of the punching groove mechanism.

[0016] The above-mentioned grooving and forming device for beautifying the semicircular outer cover of the antenna, wherein the stripper plate includes an integrally formed first guiding and mounting end and a first product fastening end. The lower end surface of the first product fastening end is concave to form the arc-shaped concave surface. The thickness at the lowest point of the concave part of the first product fastening end is less than the thickness of the first guiding and mounting end, and the thickness at the highest point of the concave part of the first product fastening end is greater than the thickness of the first guiding and mounting end, thereby forming a positioning concave platform.

[0017] The above-mentioned grooving and forming device for beautifying the semicircular outer cover of the antenna, wherein the lower template includes an integrally formed second guiding and mounting end and a second product fastening end. The upper end surface of the second product fastening end is convex to form the arc-shaped convex surface. The thickness at the highest point of the convex part of the second product fastening end is greater than the thickness of the second guiding and mounting end, and the thickness at the lowest point of the convex part of the second product fastening end is less than the thickness of the second guiding and mounting end, thereby forming a positioning convex platform that cooperates with the positioning concave platform.

[0018] The above-mentioned grooving and forming device for beautifying the semicircular outer cover of the antenna, wherein the lower die assembly further includes a positioning member for positioning the semicircular outer cover. The positioning member includes a mounting section, a supporting section, and a limiting section extending upward from one end of the supporting section. The mounting section is fixedly arranged on one side of the lower die base. The supporting surface of the supporting section is an arc-shaped supporting surface. The radius of the arc-shaped supporting surface is equal to the inner radius of the semicircular outer cover, and the arc-shaped supporting surface and the arc-shaped convex surface are on the same circumferential line.

[0019] The above-mentioned grooving and forming device for beautifying the semicircular outer cover of the antenna, wherein there are two groups of grooving mechanisms, which are symmetrically arranged in a U shape on the upper clamping plate.

[0020] The beneficial effects of the present invention are as follows: In the grooving mechanism of the present invention, an arc-shaped stamping part with an arc-shaped grooving inclined surface is adopted to smoothly stamp an arc-shaped groove on the axial wall surface of the arc-shaped structure product. And a linear stamping part for stamping a linear groove is provided, ensuring that under the same acting force, the pressure received by the product surface is increased, so as to quickly punch the required groove position on the axial wall surface of the product, and avoid affecting the grooving effect due to uneven force. In addition, in the grooving forming device of the present invention, by setting a stripper plate and a lower template with an arc-shaped fastening surface, the semi-circular outer cover product is fitted and fixed, avoiding damage to the product due to insecure fixation during the grooving forming process. With the cooperation of the grooving assembly and the stripper plate, the semi-circular outer cover product is accurately stamped with the special-shaped groove required for actual production, without being restricted by the length and appearance contour of the product, avoiding product deformation and damage caused by simultaneous extrusion of the product surface, ensuring that the flatness of the product surface meets the standard and there are no burrs, with good grooving effect and high product yield. In addition, the positioning part positions the product to ensure that the product is placed at the same position for grooving, ensuring the consistency of the product, and also avoiding product displacement caused by stamping, with high grooving accuracy, low processing cost, shortened processing cycle, and ensuring the efficiency and accuracy of grooving in mass production. Brief Description of the Drawings

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 It is a front view schematic diagram of the grooving mechanism in the present invention;

[0023] Figure 2 It is a top view schematic diagram of the grooving mechanism in the present invention;

[0024] Figure 3 It is a front view structural schematic diagram of the grooving forming device in the present invention;

[0025] Figure 4 It is a right view structural schematic diagram of the grooving forming device in the present invention;

[0026] Figure 5 It is a three-dimensional schematic diagram of the stripper plate in the present invention;

[0027] Figure 6 It is a right view schematic diagram of the stripper plate in the present invention;

[0028] Figure 7 It is a three-dimensional schematic diagram of the lower template in the present invention;

[0029] Figure 8 It is a right view schematic diagram of the lower template in the present invention;

[0030] Figure 9 It is a three-dimensional schematic diagram of the positioning part in the present invention;

[0031] Figure 10 This is a top view schematic diagram of the lower die base in the present invention. Specific embodiments

[0032] The present invention will be further described below through specific embodiments to make the technical solution of the present invention easier to understand and master, rather than limiting the present invention.

[0033] Embodiment: Refer to Figures 1 to 2 , a grooving mechanism 1 provided in this embodiment includes an arc-shaped stamping member 11 for cutting an arc-shaped groove on the circumferential wall surface of an arc-shaped structure product. The height of the arc-shaped stamping member 11 gradually decreases from one end to the other end. During the grooving process, the arc-shaped stamping member 11 at the highest height first abuts against the surface of the product. As the arc-shaped stamping member 11 further descends, the arc-shaped stamping member 11 slowly stamps an arc-shaped groove on the product, realizing stamping an arc-shaped groove on the axial wall surface of the arc-shaped structure product smoothly, ensuring that the flatness of the product surface meets the standard and there are no burrs, and avoiding product deformation and damage caused by simultaneously squeezing the product surface;

[0034] The arc-shaped stamping member 11 includes a front arc surface 111 and a rear arc surface 112 with the same radian around the same axis. The height of the front arc surface 111 is less than the height of the rear arc surface 112. The lower edge of the front arc surface 111 is connected to the lower edge of the rear arc surface 112 to form an arc-shaped grooving inclined surface 113. Specifically, the radian of the arc-shaped stamping member 11 is 90°, and the included angle between the arc-shaped grooving inclined surface 113 and the rear arc surface 112 is 45°. Under the same acting force, the pressure on the product surface is increased, so as to quickly cut out the arc-shaped groove. When grooving a product with a larger thickness, the front arc surface 111 and the rear arc surface 112 are convenient for smoothly cutting out the grooving waste, ensuring that the edge of the arc-shaped groove of the product is flat and does not deform.

[0035] Preferably, a first linear stamping member 12 for cutting a linear groove on the axial wall surface of the arc-shaped structure product extends along the tangent direction of the arc-shaped stamping member 11. The first linear stamping member 12 includes a front plane 121 and a rear plane 122 extending from the front arc surface 111 and the rear arc surface 112 respectively. The height of the front plane 121 is less than the height of the rear plane 122. The bottom surface between the front plane 121 and the rear plane 122 forms a linear grooving inclined surface 123. The included angle between the linear grooving inclined surface 123 and the rear plane 122 is 45°. Under the same acting force, the pressure on the product surface is increased, so as to quickly cut a linear groove on the axial wall surface of the product, and avoid affecting the grooving effect due to uneven force.

[0036] Preferably, the grooving mechanism 1 further includes a second linear stamping member 13 corresponding to the first linear stamping member 12. The structure of the second linear stamping member 13 is the same as that of the first linear stamping member 12. The second linear stamping member 13 also punches a linear groove on the axial wall surface of the arc-shaped structure product.

[0037] Further, a positioning projection 131 is formed at one end of the second linear stamping member 13 with a gradually increasing width along the length direction. The positioning projection 131 includes two symmetrically arranged limiting inclined surfaces, and the two limiting inclined surfaces are respectively formed by extending outward along the length direction from the front plane 121 and the rear plane 122 of the second linear stamping member 13. The positioning projection 131 is used to ensure the positioning accuracy of the grooving mechanism 1 during the grooving process and avoid deviation that affects the grooving accuracy.

[0038] Further, the arc-shaped stamping member 11 further includes a first side plane 114 connected to the front arc surface 111 and the rear arc surface 112 and parallel to the front plane 121, and a second side plane 124 is vertically connected to the front plane 121 and the rear plane 122 to ensure that the corners of the slot are right angles and the cutting effect is good.

[0039] Specifically, the radius of the arc-shaped stamping member 11 is 66 mm, the length of the first linear stamping member 12 is 70 mm, and the height of the first linear stamping member 12 is 55.31 mm; the length of the second linear stamping member 13 is 19.5 mm, the width is 6 mm, and the height is 55.31 mm, effectively ensuring the grooving accuracy and improving the yield rate of the product.

[0040] See Figures 3 to 10 , this embodiment further provides a grooving and forming device for beautifying the semi-circular outer cover of the antenna, which includes at least one group of the grooving mechanisms 1, and further includes an upper die assembly and a lower die assembly with corresponding fastening surfaces. The upper die assembly and the lower die assembly are guided and positioned by a plurality of guide columns. The guide columns ensure that the upper die assembly and the lower die assembly will not shake and shift during repeated opening and closing, which affects the grooving effect;

[0041] The lower die assembly includes a lower template 5 and a lower die base 6 arranged in sequence from top to bottom. The fastening surface of the lower template 5 is an arc-shaped convex surface;

[0042] The upper die assembly includes an upper die base 2, an upper clamping plate 3, and a blanking plate 4 arranged in sequence from top to bottom. The upper clamping plate 3 is connected to the blanking plate 4 through an elastic connecting member. The fastening surface of the blanking plate 4 is an arc-shaped concave surface corresponding to the arc-shaped convex surface. The punching groove mechanism 1 is fixedly arranged on the upper clamping plate 3. A first through groove 44 for the punching groove mechanism 1 to move up and down is longitudinally formed through the blanking plate 4. The shape of the first through groove 44 is adapted to the shape of the punching groove mechanism 1. The punching groove member moves smoothly up and down in the first through groove 44 without offsetting and causing damage to the product. Under the cooperation of the blanking plate 4 and the lower template 5, the punching groove mechanism 1 punches the required groove positions on the semi-circular outer cover product, without being restricted by the length and appearance contour of the product, ensuring the punching groove accuracy.

[0043] See Figures 5 to 8 Preferably, the blanking plate 4 includes an integrally formed first guiding and mounting end 41 and a first product fastening end 42. The lower end surface of the first product fastening end 42 is recessed to form the arc-shaped concave surface. The thickness of the lowest point of the recess of the first product fastening end 42 is less than the thickness of the first guiding and mounting end 41, and the thickness of the highest point of the recess of the first product fastening end 42 is greater than the thickness of the first guiding and mounting end 41, thus forming a positioning concave platform 43. The lower template 5 includes an integrally formed second guiding and mounting end 51 and a second product fastening end 52. The upper end surface of the second product fastening end 52 protrudes to form the arc-shaped convex surface. The thickness of the highest point of the protrusion of the second product fastening end 52 is greater than the thickness of the second guiding and mounting end 51, and the thickness of the lowest point of the protrusion of the second product fastening end 52 is less than the thickness of the second guiding and mounting end 51, thus forming a positioning convex platform 53 that cooperates with the positioning concave platform 43. A cavity for placing the semi-circular outer cover is formed between the positioning concave platform 43 and the positioning convex platform 53. Specifically, the radius of the arc-shaped concave surface is 200 mm, and the radius of the arc-shaped convex surface is 196.7 mm. When punching a semi-circular outer cover product with an outer radius of 200 mm and an inner radius of 196.7 mm, the product is placed in the cavity for fixation. Under the cooperation of the positioning concave platform 43 and the positioning convex platform 53, it is ensured that the blanking plate 4 and the lower template 5 are in good fit during mold closing, improving the punching groove accuracy and avoiding product displacement caused by punching, thereby affecting the punching groove effect.

[0044] Specifically, a second through groove 45 for the up and down movement of the positioning projection 131 is longitudinally provided through the first guiding and mounting end 41, and the shape of the second through groove 45 is adapted to the shape of the positioning projection 131; a third through groove 54 having the same structure as the second through groove 45 is longitudinally provided through the second guiding and mounting end 51. When the first linear stamping part 12 and the second linear stamping part 13 are pressed against the product, the positioning projection 131 is aligned with the edge of the product, ensuring the positioning accuracy of the grooving mechanism 1 during the grooving process, avoiding deviation during mold closing and affecting the grooving accuracy, and ensuring the grooving efficiency and accuracy of the slots during mass production.

[0045] Specifically, the height of the grooving mechanism 1 is greater than the thickness of the stripper plate 4. The elastic connecting member is a spring or urethane rubber. Preferably, the elastic connecting member is a spring. During the grooving process, the upper die base 2 drives the stripper plate 4 to descend until it abuts against the product. As the upper die base 2 continues to descend, the grooving mechanism 1 moves downward and forms a groove in the product. At this time, the elastic connecting member is in a compressed state. When the grooving is completed, the upper die base 2 drives the grooving mechanism 1 to move upward, that is, the elastic connecting member resets. When the grooving mechanism 1 leaves the product, at this time the stripper plate 4 still abuts against the product. As the upper die base 2 continues to move upward, the stripper plate 4 disengages from the product. The stripper plate 4 prevents the grooving mechanism 1 from shifting during the grooving process and affecting the grooving effect of the product, improves the demoulding efficiency, ensures that the flatness of the product surface meets the standard and there are no burrs. By using the buffering effect of the elastic connecting member, when the grooving mechanism 1 leaves the product, the stripper plate 4 still abuts tightly against the product, and reduces the impact force between the grooving mechanism 1 and the product. The product consistency is high, and the quality and yield rate of the product are improved.

[0046] See Figure 9 , preferably, the lower die assembly further includes a positioning member 7 for positioning the semi-circular outer cover. The positioning member 7 includes a mounting section 71, a supporting section 72, and a limiting section 73 extending upward from one end of the supporting section 72. The mounting section 71 is fixedly arranged on one side of the lower die base 6. The supporting surface of the supporting section 72 is an arc-shaped supporting surface. The radius of the arc-shaped supporting surface is equal to the inner radius of the semi-circular outer cover, and the arc-shaped supporting surface and the arc-shaped convex surface are on the same circumferential line; specifically, the radius of the arc-shaped supporting surface is 196.7 mm. When grooving a semi-circular outer cover product with an outer radius of 200 mm and an inner radius of 196.7 mm, the product is placed on the lower template 5. At this time, one end of the product placed on the supporting section 72 is positioned via the limiting section 73, that is, the product fits on the arc-shaped supporting surface and is limited by the limiting section 73, avoiding product displacement caused by stamping and thus affecting the grooving effect.

[0047] Furthermore, there are two sets of the grooving mechanisms 1, which are symmetrically arranged in a U shape on the upper clamping plate 3, facilitating the stamping of U-shaped grooves on the semi-circular outer cover. In mass production, the grooving efficiency and accuracy of the U-shaped grooves can be guaranteed, meeting the processing requirements of customers.

[0048] Furthermore, a relief groove 55 is provided on the lower template 5 corresponding to the grooving mechanism 1, and a blanking groove 61 is provided on the lower die base 6 corresponding to the relief groove 55. After the grooving mechanism 1 punches the product, it is inserted into the relief groove 55, and the grooving waste is discharged through the blanking groove 61.

[0049] Preferably, the stamping method of the grooving and forming device for the beautifying antenna semi-circular outer cover includes the following steps:

[0050] Step 1, fix the upper die base 2 and the lower die base 6 to the stamping machine respectively;

[0051] Step 2, place the semi-circular outer cover to be grooved on the lower template 5, making the lower end face of the semi-circular outer cover abut against the fastening surface of the lower template 5. At this time, the positioning member 7 positions the semi-circular outer cover;

[0052] Step 3, start the stamping machine to drive the upper die base 2 to move downward. When the stripping plate 4 abuts tightly against the upper end face of the semi-circular outer cover, drive the upper die base 2 to continue moving downward until the grooving mechanism 1 punches the semi-circular outer cover. At this time, the elastic connecting member is in a compressed state;

[0053] Step 4, start the stamping machine to drive the upper die base 2 to move upward. The grooving mechanism 1 also moves upward until it separates from the semi-circular outer cover. At this time, the stripping plate 4 still abuts tightly against the semi-circular outer cover. As the upper die base 2 continues to move upward, it drives the stripping plate 4 to disengage from the semi-circular outer cover;

[0054] Step 5, remove the grooved semi-circular outer cover, that is, complete the grooving and forming operation of the semi-circular outer cover.

[0055] In the grooving mechanism of the present invention, an arc-shaped stamping part with an arc-shaped grooving inclined surface is adopted to smoothly stamp an arc-shaped groove on the axial wall surface of a product with an arc-shaped structure. And a linear stamping part for stamping a linear groove is provided to ensure that under the same acting force, the pressure received by the product surface is increased, so as to quickly punch the required groove position on the axial wall surface of the product, avoiding the influence on the grooving effect due to uneven force. In addition, in the grooving forming device of the present invention, by setting a stripper plate and a lower template with an arc-shaped fastening surface, the semi-circular outer cover product is fitted and fixed, avoiding damage to the product due to insecure fixation during the grooving forming process. With the cooperation of the grooving assembly and the stripper plate, a special-shaped groove required for actual production is accurately stamped on the semi-circular outer cover product, without being restricted by the length and appearance contour of the product, avoiding product deformation and damage caused by simultaneously squeezing the product surface, ensuring that the flatness of the product surface meets the standard and there are no burrs, with good grooving effect and high product yield. In addition, the positioning part positions the product to ensure that the product is placed at the same position for grooving, ensuring the consistency of the product, and also avoiding product displacement caused by stamping, with high grooving accuracy, low processing cost, shortened processing cycle, and ensuring the efficiency and accuracy of grooving in mass production.

[0056] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention by using the disclosed technical means and technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the content of the technical solution of the present invention shall be covered by the protection scope of the present invention.

Claims

1. An indentation mechanism, characterized in that, it includes an arc-shaped stamping part for cutting an arc-shaped groove on the circumferential wall surface of a product with an arc-shaped structure, and the height of the arc-shaped stamping part gradually decreases from one end to the other end; the arc-shaped stamping part includes a front arc surface and a rear arc surface with the same radian around the same axis, the height of the front arc surface is less than the height of the rear arc surface, and the lower edges of the front arc surface and the rear arc surface are connected to form an arc-shaped indentation inclined surface; wherein, the included angle between the arc-shaped indentation inclined surface and the rear arc surface is 45°; extending along the tangent direction of the arc-shaped stamping part is a first linear stamping part for punching a linear groove on the axial wall surface of the arc-shaped structure product. The first linear stamping part includes a front plane and a rear plane respectively extending from the front arc surface and the rear arc surface. The height of the front plane is less than the height of the rear plane, and the bottom surface between the front plane and the rear plane forms a linear indentation inclined surface; the indentation mechanism further includes a second linear stamping part corresponding to the first linear stamping part, and the structure of the second linear stamping part is the same as that of the first linear stamping part; at one end of the second linear stamping part, a positioning protrusion is formed with a gradually increasing width along the length direction. The positioning protrusion includes two symmetrically arranged limiting inclined surfaces, and the two limiting inclined surfaces are respectively formed by extending outward along the length direction from the front plane and the rear plane of the second linear stamping part.

2. The indentation mechanism according to claim 1, characterized in that, the arc-shaped stamping part further includes a first side plane connected to the front arc surface and the rear arc surface and parallel to the front plane, and a second side plane is vertically connected to the front plane and the rear plane.

3. A punching and forming device for beautifying the semi-circular outer cover of an antenna, characterized in that, it includes at least one set of indentation mechanism as described in any one of claims 1-2, and it further includes an upper die assembly and a lower die assembly with corresponding fastening surfaces. The upper die assembly and the lower die assembly are guided and positioned by a plurality of guide posts; the lower die assembly includes a lower template and a lower die base arranged in sequence from top to bottom, and the fastening surface of the lower template is an arc-shaped convex surface; the upper die assembly includes an upper die base, an upper clamping plate and a stripper plate arranged in sequence from top to bottom. The upper clamping plate and the stripper plate are connected by an elastic connecting piece. The fastening surface of the stripper plate is an arc-shaped concave surface corresponding to the arc-shaped convex surface. The indentation mechanism is fixedly arranged on the upper clamping plate, and a first through groove for the up and down movement of the indentation mechanism is longitudinally penetrated through the stripper plate, and the shape of the first through groove is adapted to the shape of the indentation mechanism.

4. The punching and forming device for beautifying the semi-circular outer cover of an antenna according to claim 3, characterized in that, the stripper plate includes an integrally formed first guiding and installing end and a first product fastening end. The lower end surface of the first product fastening end is concave to form the arc-shaped concave surface. The thickness of the lowest concave part of the first product fastening end is less than the thickness of the first guiding and installing end, and the thickness of the highest concave part of the first product fastening end is greater than the thickness of the first guiding and installing end, so as to form a positioning concave platform.

5. The punching and forming device for beautifying the semi-circular outer cover of an antenna according to claim 4, It is characterized in that the lower template includes an integrally formed second guiding and mounting end and a second product fastening end. The upper end surface of the second product fastening end protrudes outward to form the arc convex surface. The thickness at the highest protruding part of the second product fastening end is greater than the thickness of the second guiding and mounting end, and the thickness at the lowest protruding part of the second product fastening end is less than the thickness of the second guiding and mounting end, so as to form a positioning boss that matches the positioning concave platform.

6. The grooving and forming device for beautifying the semi-circular outer cover of the antenna according to claim 3 It is characterized in that the lower die assembly further includes a positioning member for positioning the semi-circular outer cover. The positioning member includes a mounting section, a supporting section, and a limiting section extending upward from one end of the supporting section. The mounting section is fixedly arranged on one side of the lower die base. The supporting surface of the supporting section is an arc supporting surface. The radius of the arc supporting surface is equal to the inner radius of the semi-circular outer cover, and the arc supporting surface and the arc convex surface are on the same circumferential line.

7. The grooving and forming device for beautifying the semi-circular outer cover of the antenna according to claim 3 It is characterized in that there are two groups of grooving mechanisms, which are symmetrically arranged in a U shape on the upper clamping plate.

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