Injection molding device and injection molding method for mobile phone antenna production

Abstract

The invention relates to the technical field of mobile phone antenna production, in particular to an injection molding device and method for mobile phone antenna production. The device comprises a control table, a base is arranged at the top end of the control table, a fixing assembly is arranged at the upper end of the base, a lower mold assembly is arranged on the inner side of the fixing assembly, an upper mold assembly is arranged at the upper end of the fixing assembly, a supporting table is arranged on the upper mold assembly, and a melt box is arranged on the supporting table. The mobile phone antenna injection mold has the beneficial effects that the mobile phone antenna can be conveniently and safely mounted on the injection mold, and vibration demolding can be carried out after injection molding.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone antenna production, in particular to an injection molding device and an injection molding method for producing mobile phone antennas. Background Art

[0002] In the field of modern electronic device manufacturing, mobile phone antennas are one of the key components. Their production precision and efficiency have a significant impact on product quality and production costs. The production of mobile phone antennas is usually achieved through the injection molding process, and the injection molding equipment plays a vital role in this process.

[0003] Traditional injection molding devices for producing mobile phone antennas have many inconveniences during operation. On the one hand, the installation and removal of mobile phone antennas usually need to be carried out below the upper mold, which not only increases the complexity of the operation, but also poses certain safety hazards, because the upper mold may accidentally loosen or fall during operation, causing harm to the operator. On the other hand, traditional injection molding devices are less efficient in the demoulding process, and usually require manual demoulding operations, which is not only time-consuming and labor-intensive, but also easily causes scratches or damage to the product surface, affecting product quality. Therefore, there is a need for an injection molding device for producing mobile phone antennas that can improve operational safety, enhance demoulding efficiency, and achieve automated production.

[0004] During the conception process, the applicant searched a large number of patent documents on the patent network, and thus proposed an injection molding device and injection molding method for producing mobile phone antennas to solve the above-mentioned problems. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the present invention provides an injection molding device and an injection molding method for producing mobile phone antennas, which solve the problems of unsafe operation and low demoulding efficiency of traditional injection molding devices for producing mobile phone antennas.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: comprising a console, a base is provided at the top of the console, a fixing assembly is provided at the upper end of the base, a lower mold assembly is provided on the inner side of the fixing assembly, an upper mold assembly is provided at the upper end of the fixing assembly, a support platform is provided on the upper mold assembly, and a melt box is provided on the support platform.

[0009] Preferably, the base includes two groups of gear blocks, a first sensing block fixedly arranged on the base, and a stop block arranged on the base.

[0010] Preferably, the fixing assembly includes a fixing frame fixedly arranged on the upper end of the base, a second sensing block fixedly arranged on the inner wall of the fixing frame, sliding rails opened on both sides of the fixing frame, a sliding rod slidably connected to the side of the fixing frame away from the second sensing block, a first spring sleeved on the sliding rod, and a fixing seat fixedly arranged at the other end of the first spring.

[0011] Preferably, the lower mold assembly includes a lower mold slidably connected to the slide rail, a rectangular cavity opened on the lower mold, four groups of support plates fixedly arranged on the inner walls of the four sides of the rectangular cavity, a demolding part arranged in the rectangular cavity, and a handle fixedly arranged on one side of the lower mold.

[0012] Preferably, the demolding part includes a top plate, a striking block fixedly arranged at the lower end of the top plate, a telescopic shaft arranged on the striking block, a striking column slidably connected to the inside of the telescopic shaft, a connecting rod movably connected to the striking column, two sets of cranks movably connected on both sides of the connecting rod, a rotating shaft fixedly arranged on the side of the crank away from the connecting rod, a gear fixedly arranged on the side of the rotating shaft away from the crank, and four sets of second springs arranged on the top plate.

[0013] Preferably, there are two groups of rotating shafts and gears, and they are distributed on both sides of the connecting rod; the two groups of gears and the two groups of tooth blocks are engaged with each other; the two groups of rotating shafts are rotatably connected to the lower mold; the other ends of the four groups of second springs are fixedly connected to the lower mold.

[0014] Preferably, four groups of sliding columns are also provided on the fixed frame; the upper mold assembly includes an upper mold slidably connected to the four groups of sliding columns, an injection port opened on the upper mold, a push rod fixedly provided on the upper mold, and a hydraulic pump provided on the push rod.

[0015] Preferably, the output end of the melt box is connected to the injection port.

[0016] Preferably, four groups of support columns are fixedly provided on the support platform, and one end of the four groups of support columns away from the support platform is fixedly connected to the base.

[0017] The present invention also provides an injection molding method, comprising the following steps:

[0018] Placement: placing the mobile phone antenna on the top plate of the lower mold assembly;

[0019] Pushing: pushing the lower mold assembly to move along the slide rail toward the fixed assembly until the lower mold contacts the second sensing block in the fixed assembly;

[0020] Positioning: After receiving the signal from the second sensing block, the console controls the gear block to move upward and engage with the gear of the demoulding portion, and at the same time controls the stop block to move upward so that the stop block abuts against the lower mold, thereby completing the positioning of the lower mold assembly;

[0021] Injection molding: starting the hydraulic pump to push the upper mold assembly along the sliding column toward the lower mold assembly, so that the upper mold and the lower mold are closed;

[0022] Demolding: The console controls the block to descend, releasing the limit on the lower mold. Under the action of the first spring, the slide rod pushes the lower mold assembly along the slide rail to the outside of the fixed assembly. The gear engages with the gear block, driving the crank and the connecting rod to move. The striking column moves up and down in the telescopic shaft and strikes the striking block, causing the top plate to vibrate, thereby realizing vibration demolding of the mobile phone antenna.

[0023] (3) Beneficial effects

[0024] Compared with the prior art, the present invention provides an injection molding device and injection molding method for producing mobile phone antennas, which have the following beneficial effects:

[0025] 1. This injection molding device for producing mobile phone antennas features a structural design that integrates a fixed assembly and a lower mold assembly. This allows the installation and removal of the mobile phone antenna to be performed outside the fixing frame, rather than directly beneath the upper mold. This design effectively eliminates the risk of injuries to operators caused by accidental loosening or falling of the upper mold, ensuring that operators remain in a safe area during installation and removal, significantly improving operational safety.

[0026] 2. The injection molding device and method for producing mobile phone antennas can quickly and firmly position the lower mold assembly inside the fixed assembly through the tooth block and gear on the base, and the structural design of the mutual cooperation between the stop block and the first spring, providing a solid foundation for injection molding, reducing injection molding failures or inefficiencies caused by unstable mold fixation, and thus speeding up production progress.

[0027] 3. This mobile phone antenna injection molding device and method utilizes a structural design where the demolding unit and tooth blocks interact to generate vibration in the top plate, thereby achieving vibration demolding of the mobile phone antenna. This demolding method effectively avoids quality issues such as scratches and deformation on the antenna surface caused by manual or incomplete demolding, ensuring the product's appearance and performance, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0030] Figure 3 This is a partial structural diagram of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0031] Figure 4 This is a partial structural diagram of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the partial structure cut of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0033] Figure 6 This is a partial structural diagram of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0034] Figure 7 This is a partial structural diagram of an injection molding device for producing mobile phone antennas proposed by the present invention;

[0035] Figure 8 This is an enlarged structural schematic diagram of an injection molding device for producing mobile phone antennas proposed by the present invention.

[0036] In the figure: 1. Control console; 2. Base; 3. Fixed assembly; 4. Lower mold assembly; 5. Upper mold assembly; 6. Support platform; 7. Melt box; 11. Control system; 21. Gear block; 22. First sensing block; 23. Stop block; 31. Fixed frame; 32. Second sensing block; 33. Slide rail; 34. Slide rod; 35. First spring; 36. Fixed seat; 37. Sliding column; 41. Lower mold; 42. Rectangular cavity; 43. Support plate; 44. Demolding part; 45. Handle; 441. Top plate; 442. Striking block; 443. Telescopic shaft; 444. Striking column; 445. Connecting rod; 446. Crank; 447. Rotating shaft; 448. Gear; 449. Second spring; 51. Upper mold; 52. Injection port; 53. Push rod; 54. Hydraulic pump; 61. Support column. DETAILED DESCRIPTION

[0037] 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.

[0038] Example 1

[0039] See also Figure 1 , which is the first embodiment of the present invention, provides an injection molding device for producing mobile phone antennas, which can conveniently and safely install the mobile phone antenna on the injection mold, and can also perform vibration demolding after injection molding.

[0040] Specifically, the device includes: a base 2 is provided at the top of the console 1, a fixing component 3 is provided at the upper end of the base 2, a lower mold component 4 is provided on the inner side of the fixing component 3, an upper mold component 5 is provided at the upper end of the fixing component 3, a support platform 6 is provided on the upper mold component 5, and a melt box 7 is provided on the support platform 6.

[0041] Preferably, a control system 11 is provided inside the console 1, which is used to control the operation of the entire device, such as injection molding, melt spraying, signal transmission, start and stop of the hydraulic pump, etc.; the lower mold assembly 4 is used to install the mobile phone antenna, and the mobile phone antenna can be injection molded when the lower mold assembly 4 and the upper mold assembly 5 are closed; the melt box 7 can provide the upper mold assembly 5 with the melt required for injection molding.

[0042] During use, the mobile phone antenna is first placed on the lower mold assembly 4, which is then pushed toward the fixed assembly 3. When the lower mold assembly 4 moves into contact with the fixed assembly 3, the fixed assembly 3 transmits a signal to the control console 1. Upon receiving the signal, the control console 1 controls the base 2 to contact the lower mold assembly 4, firmly positioning the lower mold assembly 4 within the fixed assembly 3. Finally, the control console 1 controls the upper mold assembly 5 to move toward the lower mold assembly 4. When the two molds are closed, the mobile phone antenna can be injection molded. Simultaneously, the melt tank 7 continuously supplies the upper mold assembly 5 with the melt required for the injection molding process.

[0043] After injection molding, the mobile phone antenna needs to be demolded. Therefore, as lower mold assembly 4 is moved outside of fixed assembly 3, it comes into contact with base 2 and vibrates, allowing the mobile phone antenna to be demolded within lower mold assembly 4. Finally, the demolded mobile phone antenna can be removed. At this point, lower mold assembly 4 is located outside fixed assembly 3, making it easier to work on the next step.

[0044] Example 2

[0045] See also Figure 1 - Figure 8 , which is the second embodiment of the present invention, is different from the first embodiment in that the device further includes: a base 2 and a console 1 are interconnected; the base 2 includes two groups of gear blocks 21, a first sensing block 22 fixedly arranged on the base 2, and a stop block 23 arranged on the base 2.

[0046] Preferably, the first sensing block 22 is used to receive a contact signal from the gear 448 and transmit the contact signal to the console 1, and the second sensing block 32 is used to receive a contact signal from the lower mold 41 and transmit the contact signal to the console 1. When the console 1 receives a signal from the first sensing block 22, it can move the gear block 21 downward from the base 2. When the console 1 receives a signal from the second sensing block 32, it can move the gear block 21 and the stopper 23 upward from the base 2. At the same time, the console 1 can also automatically control the descent of the stopper 23.

[0047] Furthermore, the fixing assembly 3 includes a fixing frame 31 fixedly arranged on the upper end of the base 2, a second sensing block 32 fixedly arranged on the inner wall of the fixing frame 31, a slide rail 33 opened on both sides of the fixing frame 31, a slide rod 34 slidably connected to the side of the fixing frame 31 away from the second sensing block 32, a first spring 35 sleeved on the slide rod 34, and a fixing seat 36 fixedly arranged on the other end of the first spring 35.

[0048] Furthermore, the lower mold assembly 4 includes a lower mold 41 slidably connected to the slide rail 33, a rectangular cavity 42 opened on the lower mold 41, four sets of support plates 43 fixedly arranged on the inner walls of the four sides of the rectangular cavity 42, a demolding part 44 arranged in the rectangular cavity 42, and a handle 45 fixedly arranged on one side of the lower mold 41.

[0049] Furthermore, the demolding portion 44 includes a top plate 441, a striking block 442 fixedly arranged at the lower end of the top plate 441, a telescopic shaft 443 arranged on the striking block 442, a striking column 444 slidably connected to the inside of the telescopic shaft 443, a connecting rod 445 movably connected to the striking column 444, two sets of cranks 446 movably connected on both sides of the connecting rod 445, a rotating shaft 447 fixedly arranged on the side of the crank 446 away from the connecting rod 445, a gear 448 fixedly arranged on the side of the rotating shaft 447 away from the crank 446, and four sets of second springs 449 arranged on the top plate 441.

[0050] During use, the mobile phone antenna is placed on the top plate 441, and the handle 45 is pushed to move the lower mold 41 along the slide rail 33 toward the first sensing block 22. At this time, the side wall of the lower mold 41 pushes the slide bar 34 to move, and the movement of the slide bar 34 compresses the first spring 35. When the lower mold 41 contacts the first sensing block 22, the first sensing block 22 sends a signal to the console 1. After receiving the signal, the console 1 controls the gear block 21 on the base 2 to move upward and contact the gear 448. At this time, the console 1 also controls the stop block 23 to move upward, and one side of the stop block 23 abuts against one side of the lower mold 41. This completes the positioning of the lower mold 41 and provides a solid foundation for the injection molding of the mobile phone antenna.

[0051] It should be noted that the interaction between the stopper 23 and the first spring 35 securely holds the lower mold 41 within the mounting frame 31, effectively preventing the lower mold 41 from being loosely secured and affecting injection efficiency. The rising gear block 21 and its contact with the gear 448 also provide stability for the lower mold 41 under certain circumstances and prepare for demolding by vibration.

[0052] Furthermore, there are two groups of rotating shafts 447 and gears 448, and they are distributed on both sides of the connecting rod 445; the two groups of gears 448 are engaged with the two groups of gear blocks 21; the two groups of rotating shafts 447 are rotatably connected to the lower mold 41; the other ends of the four groups of second springs 449 are fixedly connected to the lower mold 41.

[0053] After the injection molding is completed, the control console 1 first controls the stopper 23 to descend and release the limit on the lower mold 41. Under the action of the first spring 35, the slide bar 34 can automatically push the lower mold 41 to move to the outside of the fixed frame 31. During the movement, the gear 448 rotates because it is engaged with the tooth block 21. The rotation of the gear 448 drives the crank 446 to rotate, and the rotation of the crank 446 drives the connecting rod 445 to move. The connecting rod 445 drives the striking post 444 to move up and down in the telescopic shaft 443 and knock the striking block 442. The striking block 442 is constantly knocked by the striking post 444 and the influence of the retractable second spring 449, which will cause the top plate 441 to vibrate, and the mobile phone antenna located on the top plate 441 will vibrate and demould. The entire demoulding process does not require manual operation, which reduces the workload of the operator.

[0054] It should also be noted that when gear 448 moves along tooth block 21 to the first sensing block 22 and contacts it, the first sensing block 22 receives a signal and sends it to the console 1. The console 1 then controls the tooth block 21 to move downward from the base 2 and no longer contacts the gear 448. The vibration demolding process also stops, and the mobile phone antenna can be removed after vibration demolding. During the next push of the lower mold 41 toward the fixed frame 31, gear 448 will not contact the tooth block 21, and the mobile phone antenna located on the top plate 441 can also be placed stably on the top plate 441.

[0055] Furthermore, four groups of sliding columns 37 are provided on the fixed frame 31; the upper mold assembly 5 includes an upper mold 51 slidably connected to the four groups of sliding columns 37, an injection port 52 opened on the upper mold 51, a push rod 53 fixedly provided on the upper mold 51, and a hydraulic pump 54 provided on the push rod 53.

[0056] During use, after the positioning of the lower mold 41 on the fixed frame 31 is completed, the console 1 controls the hydraulic pump 54 to start, and the hydraulic pump 54 drives the push rod 53 to move toward the lower mold 41. Therefore, the upper mold 51 will also move toward the lower mold 41, and the two will be closed to complete the injection molding of the mobile phone antenna.

[0057] Furthermore, the output end of the melt tank 7 is connected to the injection port 52 .

[0058] Furthermore, four groups of support columns 61 are fixedly provided on the support platform 6 , and one end of the four groups of support columns 61 away from the support platform 6 is fixedly connected to the base 2 .

[0059] Working Principle: First, the mobile phone antenna is placed on the lower mold assembly 4, then the lower mold assembly 4 is pushed toward the fixed assembly 3. When the lower mold assembly 4 moves into contact with the fixed assembly 3, the fixed assembly 3 transmits a signal to the control console 1. After receiving the signal, the control console 1 controls the base 2 to contact the lower mold assembly 4, so that the lower mold assembly 4 is firmly positioned inside the fixed assembly 3. Finally, the upper mold assembly 5 is controlled by the control console 1 to move toward the lower mold assembly 4. When the two molds are closed, the mobile phone antenna can be injection molded. At the same time, the melt tank 7 continuously provides the upper mold assembly 5 with the melt required for injection molding during this process. After the injection molding is completed, the mobile phone antenna needs to be demolded. Therefore, when the lower mold assembly 4 is moved to the outside of the fixed assembly 3, the lower mold assembly 4 and the base 2 come into contact and vibrate, allowing the mobile phone antenna to be vibrated and demolded inside the lower mold assembly 4. Finally, the demolded mobile phone antenna can be removed. At this point, the lower mold assembly 4 is located outside the fixed assembly 3, making it convenient for the next step.

[0060] In summary, the injection molding device for producing mobile phone antennas, through the structural design of the mutual cooperation between the fixing component and the lower mold component, ensures that the installation and removal operations of the mobile phone antenna are not carried out directly below the upper mold, but are located outside the fixing frame. This design effectively avoids the risk of safety accidents such as injuries to operators caused by accidental loosening or falling of the upper mold, greatly improving the safety of the operation process. The structural design of the mutual cooperation between the demoulding part and the tooth block causes the top plate to vibrate, thereby achieving vibration demoulding of the mobile phone antenna. This demoulding method can effectively avoid quality problems such as scratches and deformation on the antenna surface caused by manual demoulding or incomplete demoulding, ensure the appearance and performance of the product, and improve product quality.

[0061] Example 3

[0062] This embodiment provides an injection molding method, which includes:

[0063] Placement: Place the mobile phone antenna on the top plate 441 of the lower mold assembly 4;

[0064] Pushing: Pushing the lower mold assembly 4 to move along the slide rail 33 toward the fixed assembly 3 until the lower mold 41 contacts the second sensing block 32 in the fixed assembly 3;

[0065] Positioning: After receiving the signal from the second sensing block 32, the control console 1 controls the gear block 21 to move upward and engage with the gear 448 of the demoulding portion 44. At the same time, the control console 1 controls the stop block 23 to move upward so that the stop block 23 abuts against the lower mold 41, thereby completing the positioning of the lower mold assembly 4.

[0066] Injection molding: Start the hydraulic pump 54 to push the upper mold assembly 5 along the sliding column 37 toward the lower mold assembly 4, so that the upper mold 51 and the lower mold 41 are closed;

[0067] Demolding: The console 1 controls the stop block 23 to descend, releasing the limit on the lower mold 41. Under the action of the first spring 35, the slide rod 34 pushes the lower mold assembly 4 to move along the slide rail 33 toward the outside of the fixed assembly 3. The gear 448 engages with the gear block 21, driving the crank 446 and the connecting rod 445 to move. The striking column 444 moves up and down in the telescopic shaft 443 and strikes the striking block 442, causing the top plate 441 to vibrate, thereby realizing vibration demolding of the mobile phone antenna.

[0068] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. An injection molding device for producing mobile phone antennas, comprising a control console (1), characterized in that: The top of the console (1) is provided with a base (2), the upper end of the base (2) is provided with a fixing assembly (3), the inner side of the fixing assembly (3) is provided with a lower mold assembly (4), the upper end of the fixing assembly (3) is provided with an upper mold assembly (5), a support platform (6) is provided on the upper mold assembly (5), and a melt box (7) is provided on the support platform (6).

2. The injection molding device for producing mobile phone antennas according to claim 1, characterized in that: The base (2) and the console (1) are connected to each other; the base (2) comprises two groups of tooth blocks (21), a first sensing block (22) fixedly arranged on the base (2), and a stop block (23) arranged on the base (2).

3. The injection molding device for producing mobile phone antennas according to claim 2, characterized in that: The fixing assembly (3) includes a fixing frame (31) fixedly arranged on the upper end of the base (2), a second sensing block (32) fixedly arranged on the inner wall of the fixing frame (31), slide rails (33) opened on both sides of the fixing frame (31), a slide rod (34) slidably connected to the side of the fixing frame (31) away from the second sensing block (32), a first spring (35) sleeved on the slide rod (34), and a fixing seat (36) fixedly arranged on the other end of the first spring (35).

4. The injection molding device for producing mobile phone antennas according to claim 3, characterized in that: The lower mold assembly (4) includes a lower mold (41) slidably connected to the slide rail (33), a rectangular cavity (42) opened on the lower mold (41), four sets of supporting plates (43) fixedly arranged on the inner walls of four sides of the rectangular cavity (42), a demoulding portion (44) arranged in the rectangular cavity (42), and a handle (45) fixedly arranged on one side of the lower mold (41).

5. The injection molding device for producing mobile phone antennas according to claim 4, characterized in that: The demoulding portion (44) includes a top plate (441), a striking block (442) fixedly arranged at the lower end of the top plate (441), a telescopic shaft (443) arranged on the striking block (442), a striking column (444) slidably connected and arranged inside the telescopic shaft (443), a connecting rod (445) movably connected and arranged on the striking column (444), two groups of cranks (446) movably connected and arranged on both sides of the connecting rod (445), a rotating shaft (447) fixedly arranged on a side of the crank (446) away from the connecting rod (445), a gear (448) fixedly arranged on a side of the rotating shaft (447) away from the crank (446), and four groups of second springs (449) arranged on the top plate (441).

6. The injection molding device for producing mobile phone antennas according to claim 5, characterized in that: The rotating shaft (447) and the gear (448) are provided in two groups and are distributed on both sides of the connecting rod (445); the two groups of gears (448) and the two groups of gear blocks (21) are meshed with each other; the two groups of rotating shafts (447) are rotatably connected to the lower mold (41); and the other ends of the four groups of the second springs (449) are fixedly connected to the lower mold (41).

7. The injection molding device for producing mobile phone antennas according to claim 6, characterized in that: Four groups of sliding columns (37) are also provided on the fixed frame (31); the upper mold assembly (5) includes an upper mold (51) slidably connected to the four groups of sliding columns (37), an injection port (52) opened on the upper mold (51), a push rod (53) fixedly provided on the upper mold (51), and a hydraulic pump (54) provided on the push rod (53).

8. The injection molding device for producing mobile phone antennas according to claim 7, characterized in that: The output end of the melt box (7) is connected to the injection port (52).

9. The injection molding device for producing mobile phone antennas according to claim 8, characterized in that: Four groups of support columns (61) are fixedly arranged on the support platform (6), and one end of the four groups of support columns (61) away from the support platform (6) is fixedly connected to the base (2).

10. An injection molding method, comprising the injection molding device for producing a mobile phone antenna according to claims 1-9, characterized in that: The following steps are involved: Placing: placing the mobile phone antenna on the top plate (441) of the lower mold assembly (4); Pushing: pushing the lower mold assembly (4) to move along the slide rail (33) toward the fixed assembly (3) until the lower mold (41) contacts the second sensing block (32) in the fixed assembly (3); Positioning: After receiving the signal from the second sensing block (32), the control console (1) controls the gear block (21) to move upward and engage with the gear (448) of the demoulding portion (44), and simultaneously controls the stop block (23) to move upward so that the stop block (23) abuts against the lower mold (41), thereby completing the positioning of the lower mold assembly (4); Injection molding: starting the hydraulic pump (54) to push the upper mold assembly (5) along the sliding column (37) toward the lower mold assembly (4), so that the upper mold (51) and the lower mold (41) are closed; Demolding: The control console (1) controls the stop block (23) to descend, releasing the limit on the lower mold (41). Under the action of the first spring (35), the slide bar (34) pushes the lower mold assembly (4) to move along the slide rail (33) toward the outside of the fixed assembly (3). The gear (448) engages with the tooth block (21), driving the crank (446) and the connecting rod (445) to move. The striking column (444) moves up and down in the telescopic shaft (443) and strikes the striking block (442), causing the top plate (441) to vibrate, thereby realizing vibration demolding of the mobile phone antenna.

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