An injection mold for automatically embedding metal inserts

Abstract

The present invention relates to the technical field of injection molds, and in particular to an injection mold for automatically embedding metal inserts. The mold includes a concave mold, a convex mold, an electric push rod I, etc. The concave mold and the convex mold are arranged in a left-right symmetrical manner, and an injection hole is opened on the side of the convex mold. The convex mold is separated by a vertical channel and a transverse channel, and a through hole is opened on the bottom surface of the vertical channel so that the vertical channel is connected to the transverse channel through the through hole. A receiving groove is opened in the convex mold, and the receiving groove is connected to the transverse channel. The electric push rod I is installed in the receiving groove at intervals. The present invention can arrange the metal inserts in the vertical channel and the transverse channel in the required direction through the design of the vertical channel and the transverse channel, and then the metal inserts can be attracted by the magnetic block, and can be driven to move along the transverse channel to the cavity of the concave mold. In this way, the metal inserts can be automatically embedded in the mold without the help of external equipment, the cost is low, and there is no risk of the inserts falling or not being placed in place.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold for automatically embedding metal inserts. Background Art

[0002] In the injection molding industry, embedding metal inserts such as nuts and bushings is a common requirement to enhance the strength and functionality of plastic parts, especially in applications that require fastener connections. Traditional metal insert embedding methods mainly include hot riveting embedding after injection molding and robot-assisted embedding before injection molding:

[0003] The traditional post-injection hot riveting embedding process first completes the injection molding of the plastic part, waits for the plastic to cool and harden, and then uses a hot riveting machine to heat the metal insert to a high temperature, and then presses it into the preset plastic hole to fix it using the hot melt property of the plastic. Although this process can ensure a firm bond between the metal insert and the plastic part, the additional hot riveting process will not only extend the production cycle and increase costs, but improper temperature control may also cause plastic deformation or failure to completely fix the metal insert;

[0004] The robot-assisted pre-injection embedding method uses a robot to accurately place the metal insert at the specified position of the mold before injection molding, and then performs injection molding. This method can avoid additional post-processing steps and theoretically improve production efficiency. However, in actual operation, the positioning accuracy and stability of the robot are crucial. Any slight deviation may cause the insert to shift or fall off, or even damage the mold at high speed, thereby increasing maintenance costs and downtime. Summary of the invention

[0005] In view of this, the present invention provides an injection mold for automatically embedding metal inserts, which can overcome the shortcomings of traditional metal insert embedding methods that require the assistance of external equipment, are relatively costly, and have the risk of insert displacement or falling off.

[0006] The technical solution of the present invention is: an injection mold for automatically embedding metal inserts, including a concave mold and a punch, the concave mold and the punch are arranged in a left-right symmetrical manner, and an injection hole is opened on the side of the punch, and also includes an electric push rod I, a magnetic block, a connecting rod, a connecting plate, a limit assembly and a feeding mechanism, the vertical channel and the transverse channel are separated in the punch, and a through hole is opened on the bottom surface of the vertical channel so that the vertical channel is connected with the transverse channel through the through hole, a receiving groove is opened in the punch, and the receiving groove is connected with the transverse channel, the electric push rod I is installed in the receiving groove at intervals, the magnetic block is connected to the telescopic rod of the electric push rod I, and the magnetic block is located inside the transverse channel, the connecting plate is connected to the side of the magnetic block through a connecting rod, the limit assembly is used to limit the metal insert in the transverse channel, and the feeding mechanism is used to transport the metal insert into the vertical channel.

[0007] As a preferred technical solution of the present invention, the limit assembly includes a limit block and a connecting spring. The limit block is slidably connected in the punch, and the top surface of the limit block protrudes from the bottom surface of the transverse channel. The connecting spring connects the limit block and the punch.

[0008] As a preferred technical solution of the present invention, the feeding mechanism includes a material storage tray, a handle, a material guide frame, a fixed sleeve, a ball locking pin, a push plate, a compression spring and a material blocking assembly. The material storage tray is placed at intervals on the top surface of the punch, the handle is connected to the top surface of the material storage tray, the material guide frame is connected to the top surface of the punch at intervals, and the bottom surface of the material guide frame is connected to the upper end of the vertical channel, the fixed sleeve is connected to the top surface of the punch at intervals, the ball locking pin is connected to the handle, and the ball locking pin passes through the middle of the material storage tray, the ball locking pin is plugged into the fixed sleeve, the push plate is slidably connected to the material storage tray, the compression spring connects the push plate and the material storage tray, and the material blocking assembly is used to block the metal inserts in the material storage tray.

[0009] As a preferred technical solution of the present invention, the material baffle assembly includes a connecting block, a rotating baffle and a torsion spring. The connecting block is connected to the side of the material storage tray, the rotating baffle is rotatably connected to the connecting block, and the torsion spring connects the rotating baffle and the connecting block.

[0010] As a preferred technical solution of the present invention, it also includes a prompt component, which includes a fixed magnetic plate, a sliding magnetic plate, a mounting rod, a buzzer and a contact switch. The fixed magnetic plate is connected to the top surface of the push plate, the sliding magnetic plate is slidably connected to the material storage tray, the mounting rod is connected to the material storage tray, the buzzer is installed on the top surface of the material storage tray, the contact switch is installed on the bottom surface of the mounting rod, and the contact switch is located directly above the sliding magnetic plate.

[0011] As a preferred technical solution of the present invention, it also includes a heating plate, and two heating plates are symmetrically installed in the vertical channel, and the two heating plates are respectively located on both sides of the through hole.

[0012] As a preferred technical solution of the present invention, it also includes an airbag and an inflation component. The airbag is connected to the outside of the connecting rod, and an air supply channel is opened inside the magnetic block and the connecting rod. The inflation component injects air into the airbag through the air supply channel to make the airbag expand and fit the inner wall of the metal insert.

[0013] As a preferred technical solution of the present invention, the inflation component includes an electric push rod II, a hollow frame, a connecting pipe and a piston plate. The electric push rod II and the hollow frame are both connected to the accommodating groove, and the hollow frame is located on the side of the electric push rod II. The connecting pipe is connected to the side of the hollow frame, and the end of the connecting pipe is located in the air supply channel. The piston plate is slidably connected in the hollow frame, and the side of the piston plate is connected to the telescopic rod of the electric push rod II.

[0014] Beneficial effects of the present invention: Through the design of the vertical channel and the transverse channel, the present invention can arrange the metal inserts in the vertical channel and the transverse channel according to the required direction, and then the metal inserts can be attracted by the magnetic block and driven to move along the transverse channel to the cavity of the die. In this way, the metal inserts can be automatically embedded in the mold without the aid of external equipment, the cost is low, and there is no risk of the inserts falling off or being placed incorrectly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a cross-sectional view of the punch of the present invention.

[0017] Figure 3 For the present invention Figure 2 A magnified view of part A.

[0018] Figure 4 It is a schematic diagram of the installation of the feeding mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the separation structure of the fixing sleeve and the ball locking pin of the present invention.

[0020] Figure 6 It is a cross-sectional view of the material storage tray of the present invention.

[0021] Figure 7 It is a schematic diagram of the installation of the material blocking component and the prompting component of the present invention.

[0022] Figure 8 It is a schematic diagram of the specific structure of the fixed magnetic plate, the sliding magnetic plate, the mounting rod and the contact switch of the present invention.

[0023] Fig. 9 It is a schematic diagram of the installation of the heating plate of the present invention.

[0024] Fig.10 It is a schematic diagram of the installation of the airbag of the present invention.

[0025] Fig.11 It is a cross-sectional view of the magnetic block, connecting rod, connecting plate and airbag of the present invention.

[0026] Fig.12 It is a schematic diagram of the installation of the inflatable component of the present invention.

[0027] Markings in the figure are: 1-die, 2-punch, 201-injection hole, 202-vertical channel, 203-lateral channel, 204-through hole, 205-accommodating groove, 3-electric push rod I, 4-magnetic block, 5-connecting rod, 6-connecting plate, 7-limiting block, 8-connecting spring, 9-storage tray, 10-handle, 11-material guide frame, 12-fixing sleeve, 13-ball locking pin, 14-push plate, 15-compression spring, 16-connecting block, 17-rotating baffle, 18-torsion spring, 19-fixed magnetic plate, 20-sliding magnetic plate, 21-mounting rod, 22-buzzer, 23-contact switch, 24-heating plate, 25-air bag, 26-air supply channel, 27-electric push rod II, 28-hollow frame, 29-connecting pipe, 30-piston plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] Embodiment: An injection mold for automatically embedding a metal insert, such as Figure 1-Figure 7As shown, it includes a die 1 and a punch 2, the die 1 and the punch 2 are symmetrically arranged, and an injection hole 201 is opened in the middle of the punch 2. After the die 1 and the punch 2 are molded together, the raw material can be injected into the cavity of the die 1 through the injection hole 201, and the injection molding process can be completed by waiting for the raw material to cool and form; it also includes an electric push rod Ⅰ3, a magnetic block 4, a connecting rod 5, a connecting plate 6, a limit assembly and a feeding mechanism. Three vertical channels 202 and three horizontal channels 203 are evenly spaced from front to back on the upper left side of the inner side of the punch 2. The vertical channels 202 correspond to the horizontal channels 203 one by one, and the horizontal channels 203 are located directly below the corresponding vertical channels 202. The upper end of the vertical channel 202 is exposed to the top surface of the punch 2, and the left end of the horizontal channel 203 is exposed to the left side of the punch 2. The bottom surfaces of the three vertical channels 202 are all provided with through holes 204 so that the lower ends of the vertical channels 202 can pass through The hole 204 is connected to the top surface of the transverse channel 203. Three accommodating grooves 205 are evenly spaced from front to back on the upper right side of the inner side of the punch 2. The accommodating grooves 205 correspond to the transverse channels 203 one by one, and the accommodating grooves 205 are connected to the corresponding transverse channels 203. The top surfaces of the three accommodating grooves 205 are all connected with electric push rods Ⅰ3. The magnetic block 4 is connected to the telescopic rod of the electric push rod Ⅰ3, and the magnetic block 4 is located inside the transverse channel 203. A connecting rod 5 is connected to the left side of the magnetic block 4, and a connecting plate 6 is connected to the left end of the connecting rod 5. The connecting plate 6 is circular in shape, and the diameter of the connecting plate 6 is consistent with the inner diameter of the metal insert, and the diameter of the connecting rod 5 is smaller than the inner diameter of the metal insert, so that the connecting rod 5 and the connecting plate 6 can pass through the inner wall of the metal insert. The limiting assembly is used to limit the metal insert in the transverse channel 203, and the feeding mechanism is used to transport the metal insert into the vertical channel 202.

[0030] like Figure 2 and Figure 3 As shown, the limit assembly includes a limit block 7 and a connecting spring 8. Three limit blocks 7 are slidably connected at even intervals from front to back on the upper left side of the punch 2. The limit blocks 7 correspond to the transverse channels 203 one by one. The top surface of the limit block 7 protrudes from the left side of the bottom surface of the corresponding transverse channel 203, and the top surface of the limit block 7 is an arc surface. The two ends of the connecting spring 8 are respectively connected to the bottom surface of the limit block 7 and the punch 2.

[0031] like Figure 4-Figure 7 As shown, the feeding mechanism includes a material storage tray 9, a handle 10, a material guide frame 11, a fixing sleeve 12, a ball locking pin 13, a push plate 14, a compression spring 15 and a material blocking assembly. Three material storage trays 9 are evenly spaced from front to back on the top surface of the punch 2. Guide channels are opened inside the three material storage trays 9. The shape of the guide channels is a mosquito coil disc shape (such as Figure 6As shown), a round hole is opened in the middle of the material storage tray 9, a handle 10 is connected to the top surface of the material storage tray 9, and the shape of the handle 10 is an inverted U shape. Three material guide frames 11 are evenly spaced from front to back on the top surface of the punch 2. The material guide frames 11 correspond to the vertical channels 202 one by one, and the bottom surfaces of the material guide frames 11 are connected to the upper ends of the corresponding vertical channels 202. Three fixed sleeves 12 are evenly spaced from front to back on the top surface of the punch 2. The fixed sleeves 12 correspond to the material storage tray 9 one by one, and the fixed sleeves 12 all slide through the round holes in the middle of the corresponding material storage tray 9, which are used to limit the material storage tray 9 and fix it. A card slot is opened on the inner wall of the sleeve 12 (not shown in the figure), and a ball locking pin 13 is connected to the handle 10. The ball locking pin 13 passes through the circular hole in the middle of the corresponding material storage tray 9, and the ball locking pin 13 corresponds to the fixed sleeve 12 one by one. The ball locking pin 13 can be inserted into the corresponding fixed sleeve 12, and then the card ball in the ball locking pin 13 can be ejected and stuck in the card slot in the fixed sleeve 12 due to the action of the spring (existing technology) to lock the material storage tray 9. Push plates 14 are slidably connected in the guide channels of the three material storage trays 9. The initial position of the push plate 14 is located at the discharge end of the guide channel (such as Figure 6 As shown), and the bottom surface of the push plate 14 contacts the inner wall of the guide channel, and compression springs 15 are provided in the guide channels of the three material storage trays 9. The compression springs 15 are distributed in the shape of mosquito coils along the guide channels. The two ends of the compression spring 15 are respectively connected to the side of the push plate 14 and the inner wall of the material storage tray 9. The material blocking assembly is used to block the metal inserts in the material storage tray 9; the material blocking assembly includes a connecting block 16, a rotating baffle 17 and a torsion spring 18. The connecting block 16 is connected to the front left side of the material storage tray 9, and the rotating baffle 17 is rotatably connected to the front side of the connecting block 16. Since the overall shape of the rotating baffle 17 is semicircular, the right side surface of the rotating baffle 17 is an arc surface. A lever is also connected to the rotating baffle 17 to facilitate manual control of the rotation of the rotating baffle 17, and the rotating baffle 17 is in contact with the guide frame 11. The torsion spring 18 is wound around the rotating axis of the rotating baffle 17, and the two ends of the torsion spring 18 are respectively connected to the rotating baffle 17 and the connecting block 16.

[0032] Initially, the push plate 14 is located at the discharge end of the guide channel of the material storage tray 9, and the rotating baffle 17 blocks the front side of the push plate 14; when the mold needs to be used, first turn the rotating baffle 17 to the left, and the torsion spring 18 will deform, so that the rotating baffle 17 no longer blocks the front side of the push plate 14, and then insert a proper amount of metal inserts into the guide channel of the material storage tray 9 in sequence, and the metal inserts will squeeze the push plate 14 and gradually enter the guide channel of the material storage tray 9, the compression spring 15 will be compressed, and then the rotating baffle 17 will be released, and the torsion spring 18 will return to its original state, driving the rotating baffle 17 to rotate right and reset, so that the rotating baffle 17 can block the front side of the frontmost metal insert; then hold the handle 10 to adjust the position of the material storage tray 9 and place it on the top surface of the punch 2 to lock the ball The pin 13 is inserted into the fixed sleeve 12, and the ball locking pin 13 cooperates with the fixed sleeve 12 to lock the material storage tray 9. At the same time, the rotating baffle 17 will contact the material guide frame 11, and the material guide frame 11 will squeeze the rotating baffle 17 to rotate to the left, and the torsion spring 18 will deform, so that the rotating baffle 17 no longer blocks the front side of the frontmost metal insert, and the rear side of the material guide frame 11 can be aligned with the discharge end of the guide channel of the material storage tray 9. At this time, the compression spring 15 will gradually return to its original state, driving the push plate 14 to pop out along the guide channel of the material storage tray 9, and the push plate 14 can push the metal insert in the guide channel of the material storage tray 9 out, so that the metal insert in the guide channel of the material storage tray 9 can fall into the vertical channel 202 through the material guide frame 11 in turn. The metal insert on the lower side can fall down into the transverse channel 203 through the through hole 204, and then the telescopic rod of the electric push rod Ⅰ3 is controlled to extend, which can drive the magnetic block 4, the connecting rod 5 and the connecting plate 6 to move to the left, so that the connecting plate 6 and the connecting rod 5 can pass through the inner side of the metal insert in the transverse channel 203 in sequence. Since the limit block 7 blocks the left side of the metal insert in the transverse channel 203, the metal insert in the transverse channel 203 can be limited to prevent the metal insert in the transverse channel 203 from moving until the magnetic block 4 contacts the right side of the metal insert in the transverse channel 203. The magnetic block 4 can absorb the metal insert in the transverse channel 203 through magnetic force. At this time, the connecting plate 6 is just located on the left side of the metal insert in the transverse channel 203. Then the magnetic block 4 Block 4 continues to move to the left, which can drive the metal insert in the transverse channel 203 to move to the left. Since the top surface of the limit block 7 is an arc surface, the metal insert will squeeze the limit block 7 to move downward, and the connecting spring 8 will be compressed so that the limit block 7 will not affect the movement of the metal insert in the transverse channel 203. Then the metal insert will separate from the limit block 7, and the connecting spring 8 will return to its original state, driving the limit block 7 to move upward and reset. The magnetic block 4 drives the metal insert to continue to move to the left, which can make the metal insert pass through the left end of the transverse channel 203, until the magnetic block 4 moves to the left end of the transverse channel 203, and the electric push rod Ⅰ3 is controlled to stop working. At this time, the telescopic rod of the electric push rod Ⅰ3 is located in the transverse channel 203, which can block the remaining metal inserts in the vertical channel 202.Then, the die 1 and the punch 2 are controlled to close the mold. The punch 2 can drive the metal insert to the specified position in the cavity of the die 1. At this time, an appropriate amount of raw material can be injected between the die 1 and the punch 2 through the injection hole 201. Since the connecting plate 6 blocks the left side of the metal insert in the transverse channel 203, the raw material will not enter the inner side of the metal insert, and the magnetic block 4 blocks the left end of the transverse channel 203, so the raw material will not enter the transverse channel 203. Then, wait for the raw material to cool and form in the cavity of the die 1, and then control the telescopic rod of the electric push rod Ⅰ3 to shorten and reset, which can drive the magnetic block 4, the connecting rod 5 and the connecting plate 6 to Right movement reset, because the metal insert is already connected to the molded plastic product, the magnetic block 4, the connecting rod 5 and the connecting plate 6 can be separated from the metal insert, and then the next metal insert in the vertical channel 202 can fall down into the horizontal channel 203, and then the concave mold 1 and the convex mold 2 are controlled to separate, and the molded plastic product can be taken out manually, and the above operation can be repeated to automatically embed the metal insert in the cavity of the concave mold 1 again. In this way, the metal insert can be automatically embedded in the mold without the help of external equipment, with low cost and no risk of the insert falling or being placed in place. ;

[0033] like Figure 7 and Figure 8 As shown, a prompt component is also included, which includes a fixed magnetic plate 19, a sliding magnetic plate 20, a mounting rod 21, a buzzer 22 and a contact switch 23. The fixed magnetic plate 19 is connected to the top surface of the push plate 14, and the top surface of the fixed magnetic plate 19 contacts the inner wall of the guide channel of the storage tray 9. The sliding magnetic plate 20 is slidably connected to the storage tray 9. The sliding magnetic plate 20 is located directly above the fixed magnetic plate 19. The ends of the sliding magnetic plate 20 and the fixed magnetic plate 19 that are close to each other have the same magnetic pole, and the rear side of the lower end of the sliding magnetic plate 20 is an inclined surface. The mounting rod 21 and the buzzer 22 are connected to the left side of the top surface of the storage tray 9. The contact switch 23 is installed on the bottom surface of the mounting rod 21, and the contact switch 23 is located directly above the sliding magnetic plate 20.

[0034] Initially, the fixed magnetic plate 19 is located directly below the sliding magnetic plate 2, the top surface of the sliding magnetic plate 20 is in contact with the contact switch 23, and the buzzer 22 is in a power-off state; when the metal insert is manually loaded into the guide channel of the storage tray 9, the metal insert will squeeze the push plate 14 and gradually enter the guide channel of the storage tray 9, and the push plate 14 will drive the fixed magnetic plate 19 to enter the guide channel of the storage tray 9, so that the fixed magnetic plate 19 is no longer located directly below the sliding magnetic plate 2. Under the action of gravity, the sliding magnetic plate 20 will slide downward, so that the top surface of the sliding magnetic plate 20 is separated from the contact switch 23; when the storage tray 9 is manually installed to the position where the punch 2 is placed After the top surface is touched, the buzzer 22 can be controlled to be in a powered state. As the push plate 14 pushes out the metal inserts in the guide channel of the storage tray 9 one by one, when all the metal inserts in the guide channel of the storage tray 9 are used up, the push plate 14 can drive the fixed magnetic plate 19 to return to the bottom of the sliding magnetic plate 2. Utilizing the principle of like poles repelling each other between the fixed magnetic plate 19 and the sliding magnetic plate 20, the fixed magnetic plate 19 can drive the sliding magnetic plate 20 to move upward through magnetic force. When the top surface of the sliding magnetic plate 20 contacts the contact switch 23, the contact switch 23 can control the buzzer 22 to emit a warning sound, thereby reminding the operator to replenish the metal inserts in the storage tray 9 in time.

[0035] like Fig. 9 As shown, a heating plate 24 is also included. A heating plate 24 is installed on both sides of the left and right sides of the vertical channel 202. The number of the heating plates 24 is two, and the two heating plates 24 are respectively located on the left and right sides of the through hole 204. The sides of the upper ends of the heating plates 24 that are close to each other are arc surfaces, which is convenient for the metal inserts to enter the vertical channel 202. The heating plates 24 can be preheated in advance for the metal inserts in the vertical channel 202, thereby reducing the temperature difference between the metal inserts and the plastic melt, reducing the risk of stress cracking in the plastic products, and ensuring a better bonding effect between the plastic products and the metal inserts.

[0036] like Figure 10-12 As shown, it also includes an airbag 25 and an inflation component. The airbag 25 is wrapped around the outside of the connecting rod 5. An air supply channel 26 is opened inside the magnetic block 4 and the connecting rod 5. The air supply channel 26 is L-shaped, and the right end of the air supply channel 26 is exposed from the right side of the magnetic block 4. The upper end of the air supply channel 26 is connected to the inside of the airbag 25. The inflation component injects air into the airbag 25 through the air supply channel 26 to make the airbag 25 expand and fit the inner wall of the metal insert; the inflation component includes an electric push rod II 27, a hollow frame 28, a connecting pipe 29 and a piston plate 30. The electric push rod II 27 and the hollow frame 28 are both connected to the bottom surface of the accommodating groove 205, and the hollow frame 28 is located on the left side of the electric push rod II 27. The connecting pipe 29 is connected to the left side of the hollow frame 28, and the left end of the connecting pipe 29 is located in the air supply channel 26. The piston plate 30 is slidably connected in the hollow frame 28, and the right side of the piston plate 30 is connected to the telescopic rod of the electric push rod II 27.

[0037] Common metal inserts include nuts and bushings. Since the inner wall of the nut is provided with a thread groove and the end of the screw hole of the nut is usually chamfered to facilitate the installation of the nut and the screw, when the device is embedding the nut, even if the connecting plate 6 can block the left side of the nut, the connecting plate 6 cannot fit with the left side of the nut, resulting in the plastic material in the cavity of the die 1 possibly entering the thread groove through the end of the screw hole of the nut; therefore, when the device is embedding the nut, the airbag 25 will move to the inside of the nut with the connecting rod 5, and then the telescopic rod of the electric push rod II 27 can be controlled to extend, driving the piston plate 30 to move inward. The piston plate 30 moves to the left in the hollow frame 28, and the connecting tube 29 can inject air into the airbag 25, so that the airbag 25 expands and fits the thread groove on the inner wall of the nut, thereby blocking the thread groove on the inner wall of the nut, preventing the plastic material in the cavity of the die 1 from entering the thread groove on the inner wall of the nut. When the plastic product is formed, the telescopic rod of the electric push rod II 27 can be controlled to shorten, driving the piston plate 30 to move rightward in the hollow frame 28 to reset, so that the air in the airbag 25 can be pumped back into the hollow frame 28 through the connecting tube 29, so that the airbag 25 shrinks and recovers.

[0038] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold for automatically embedding a metal insert, comprising a die (1) and a punch (2), wherein the die (1) and the punch (2) are arranged symmetrically, and an injection hole (201) is opened on the side of the punch (2), characterized in that: The invention also comprises an electric push rod I (3), a magnetic block (4), a connecting rod (5), a connecting plate (6), a limit assembly and a feeding mechanism. A vertical channel (202) and a transverse channel (203) are separated in the punch (2), and a through hole (204) is formed on the bottom surface of the vertical channel (202), so that the vertical channel (202) is connected to the transverse channel (203) through the through hole (204). A receiving groove (205) is formed in the punch (2), and the receiving groove (205) is connected to the transverse channel (203). The electric push rod I (3) is installed in the receiving groove (205) at intervals. The magnetic block (4) is connected to the telescopic rod of the electric push rod I (3), and the magnetic block (4) is located inside the transverse channel (203). The connecting plate (6) is connected to the telescopic rod of the electric push rod I (3). The connecting rod (5) is connected to the side of the magnetic block (4); the limit assembly is used to limit the metal insert in the transverse channel (203); the feeding mechanism is used to transport the metal insert into the vertical channel (202); the limit assembly includes a limit block (7) and a connecting spring (8); the limit block (7) is slidably connected in the punch (2), and the top surface of the limit block (7) protrudes from the bottom surface of the transverse channel (203); the connecting spring (8) connects the limit block (7) and the punch (2); the feeding mechanism includes a material storage tray (9), a handle (10), a material guide frame (11), a fixing sleeve (12), a ball locking pin (13), a push plate (14), a compression spring (15) and a material stop assembly; the material storage tray (9) is placed at intervals on the punch (2) The material guide frame (11) is connected to the top surface of the material storage tray (9), the material guide frame (11) is connected to the top surface of the punch (2) at intervals, and the bottom surface of the material guide frame (11) is communicated with the upper end of the vertical channel (202), the fixing sleeve (12) is connected to the top surface of the punch (2) at intervals, the ball locking pin (13) is connected to the handle (10), and the ball locking pin (13) passes through the middle of the material storage tray (9), the ball locking pin (13) and the fixing sleeve (12) are plugged and matched, the push plate (14) is slidably connected to the material storage tray (9), the compression spring (15) connects the push plate (14) and the material storage tray (9), and the material blocking assembly is used to block the metal insert in the material storage tray (9); the material blocking assembly includes a connecting block (16), a rotating baffle (17) and a torsion spring (18). The invention also comprises a torsion spring (18), a connecting block (16) connected to the side of the material storage tray (9), a rotating baffle (17) rotatably connected to the connecting block (16), and a torsion spring (18) connecting the rotating baffle (17) and the connecting block (16); a heating plate (24) is also included, and the two heating plates (24) are symmetrically installed in the vertical channel (202), and the two heating plates (24) are respectively located on both sides of the through hole (204); and an air bag (25) and an inflation component are also included, the air bag (25) is connected to the outside of the connecting rod (5), and an air supply channel (26) is opened inside the magnetic block (4) and the connecting rod (5), and the inflation component injects air into the air bag (25) through the air supply channel (26), so that the air bag (25) expands and fits the inner wall of the metal insert;The ball locking pin (13) cooperates with the fixing sleeve (12) to lock the material storage tray (9). At the same time, the rotating baffle (17) contacts the material guide frame (11). The material guide frame (11) squeezes the rotating baffle (17) to rotate to the left. The torsion spring (18) deforms so that the rotating baffle (17) no longer blocks the front side of the frontmost metal insert. Moreover, the rear side of the material guide frame (11) can be aligned with the discharge end of the guide channel of the material storage tray (9). At this time, the compression spring (15) gradually returns to its original state, driving the push plate (14) to move along the material storage tray. The guide channel of the storage tray (9) pops outward, and the push plate (14) can push out the metal insert in the guide channel of the storage tray (9), so that the metal insert in the guide channel of the storage tray (9) can sequentially pass through the guide frame (11) and fall into the vertical channel (202); the telescopic rod of the electric push rod I (3) is controlled to extend, which can drive the magnetic block (4), the connecting rod (5) and the connecting plate (6) to move leftward, so that the connecting plate (6) and the connecting rod (5) can sequentially pass through the inner side of the metal insert in the horizontal channel (203). The magnetic block (4) holds the left side of the metal insert in the transverse channel (203), thereby limiting the position of the metal insert in the transverse channel (203), until the magnetic block (4) contacts the right side of the metal insert in the transverse channel (203). The magnetic block (4) can attract the metal insert in the transverse channel (203) through magnetic force. At this time, the connecting plate (6) is just located on the left side of the metal insert in the transverse channel (203). Then, the magnetic block (4) continues to move to the left, which can drive the metal insert in the transverse channel (203) to move to the left. Due to the limit block ( 7) The top surface is an arc surface, so the metal insert will squeeze the limit block (7) to move downward, and the connecting spring (8) will be compressed so that the limit block (7) will not affect the movement of the metal insert in the transverse channel (203). Then the metal insert will separate from the limit block (7), and the connecting spring (8) will return to its original state, driving the limit block (7) to move upward and reset. The magnetic block (4) drives the metal insert to continue to move to the left, so that the metal insert can pass through the left end of the transverse channel (203) until the magnetic block (4) moves to the left end of the transverse channel (203). ; 2. An injection mold for automatically embedding metal inserts as claimed in claim 1, characterized in that: The device also includes a prompting assembly, which includes a fixed magnetic plate (19), a sliding magnetic plate (20), a mounting rod (21), a buzzer (22) and a contact switch (23). The fixed magnetic plate (19) is connected to the top surface of the push plate (14), the sliding magnetic plate (20) is slidably connected to the material storage tray (9), the mounting rod (21) is connected to the material storage tray (9), the buzzer (22) is installed on the top surface of the material storage tray (9), and the contact switch (23) is installed on the bottom surface of the mounting rod (21), and the contact switch (23) is located directly above the sliding magnetic plate (20).

3. An injection mold for automatically embedding metal inserts as claimed in claim 2, characterized in that: The inflatable assembly comprises an electric push rod II (27), a hollow frame (28), a connecting pipe (29) and a piston plate (30). The electric push rod II (27) and the hollow frame (28) are both connected to the accommodating groove (205), and the hollow frame (28) is located on the side of the electric push rod II (27). The connecting pipe (29) is connected to the side of the hollow frame (28), and the end of the connecting pipe (29) is located in the air supply channel (26). The piston plate (30) is slidably connected to the hollow frame (28), and the side of the piston plate (30) is connected to the telescopic rod of the electric push rod II (27).

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