A rocket head welding alloy device for injection molding machines

Abstract

This invention discloses a rocket head welding alloy device for injection molding machines, specifically relating to the field of rocket head welding technology. It includes an induction welding worktable with a mounting hole at the center of its top. A pneumatic chuck for fixing the rocket head is fixed at the center of its bottom, communicating with the mounting hole. A support frame is fixed at the bottom of the worktable, fitted around the pneumatic chuck. Multiple induction heating mechanisms are located on the top of the worktable. This invention uses a pneumatic chuck to fix the rocket head, and a synchronous cylinder drives a polysulfone slider to push multiple alloy blocks into contact with the tail feathers of the rocket head in sequence. Two induction coils then heat the alloy blocks, thereby achieving welding between the alloy blocks and the tail feathers of the rocket head, resulting in high welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of rocket head welding technology for injection molding machines, and more specifically to a device for welding alloys for rocket heads used in injection molding machines. Background Technology

[0002] The rocket head welding alloy device for injection molding machines is mainly used for welding alloys onto the rocket heads of injection molding machines. The rocket head is a key component in an injection molding machine, enduring high temperature, high pressure, and wear during the injection molding process. By using the welding alloy device, a high-performance alloy material can be fused onto the surface of the rocket head, improving its hardness, wear resistance, corrosion resistance, and other properties, thereby extending the service life of the rocket head and reducing production costs. High-glass fiber halogen-free plastic injection molding machine rocket head parts simultaneously withstand high wear, high corrosion, and high impact conditions, resulting in a short lifespan. The materials used for rocket head parts must meet stringent requirements such as high strength, high impact toughness, high corrosion resistance, and high wear resistance. Currently, injection molding machine rocket heads are typically welded with an alloy onto their surface.

[0003] For example, in the prior art disclosure number CN115740713A, there is an inlaid alloy rocket head, a welded structure and its manufacturing method. In the processing of the rocket head, a wear-resistant and corrosion-resistant alloy block is welded to the outer side of the cone part of the rocket head body. The wear-resistant and corrosion-resistant alloy block is made of ternary boride material or hard alloy, which has high hardness, wear resistance and corrosion resistance, and is suitable for processing special plastics.

[0004] However, traditional plastic mold steels, stainless steels, and nickel-based alloys have certain corrosion resistance but suffer from severe wear. High-speed steel and powder steel have high wear resistance but also suffer from severe corrosion. Existing technologies can hardly meet both high corrosion resistance and high wear resistance at the same time. Furthermore, during the feeding process, alloy blocks may fall into the mounting holes, requiring workers to remove them with tools, which is very inconvenient. Based on this, the present invention provides a rocket head alloy welding device for injection molding machines. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, this invention provides a rocket head welding alloy device for injection molding machines. A pneumatic chuck and a polysulfone slider are used to fix the alloy block to the tail feathers of the rocket head. Two induction coils are used to heat the alloy block, achieving welding between the alloy block and the tail feathers. This method offers high welding efficiency. Furthermore, a pressure plate is used to limit the position of the alloy block, thereby improving the stability of multiple alloy blocks and preventing the alloy from falling into the mounting holes. This solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rocket head welding alloy device for injection molding machines, comprising an induction welding worktable, wherein an installation hole is provided at the center of the top of the induction welding worktable, and a pneumatic chuck for fixing the rocket head is fixed at the center of the bottom of the induction welding worktable. Specifically, the pneumatic chuck is a clamping device powered by compressed air. The specific principle of the pneumatic chuck is as follows: when compressed air enters the cylinder of the chuck through the pneumatic control system, the piston in the cylinder pushes the transmission mechanism to move the jaws toward the center and clamp the rocket head. When it is necessary to release the rocket head, the control valve switches the flow direction of the compressed air, causing the piston in the cylinder to move in the opposite direction, driving the transmission mechanism to open the jaws outward. The pneumatic chuck is connected to the installation hole, and a support frame is fixed at the bottom of the induction welding worktable, the support frame being sleeved on the outside of the pneumatic chuck.

[0007] The top of the induction welding workbench is equipped with multiple induction heating mechanisms. Each induction heating mechanism includes a synchronous cylinder that is detachably fixed to the top of the induction welding workbench. A polysulfone slider is fixed to one end of the piston rod of each synchronous cylinder. An alumina ceramic plate is provided at the bottom of the polysulfone slider. Two symmetrically distributed induction coils are fixed above each alumina ceramic plate. Specifically, an induction coil is a device that works using the principle of electromagnetic induction. When an alternating current is passed through the induction coil, an alternating magnetic field is generated around it. The alloy block placed in this magnetic field will generate an induced current, i.e., an eddy current, due to electromagnetic induction. The eddy current flows inside the alloy block. Since the alloy block has a certain resistance, the eddy current will cause the alloy block to heat up, thereby achieving the purpose of heating.

[0008] Each alumina ceramic plate has multiple alloy blocks on its top, and the induction welding worktable has multiple limiting mechanisms fixed on its top to restrict the multiple alloy blocks.

[0009] In a preferred embodiment, the top of the induction welding workbench is provided with multiple mounting slots, and multiple alumina ceramic plates are detachably fixed inside the multiple mounting slots, which facilitates the removal and replacement of alumina ceramic plates by the operator.

[0010] In a preferred embodiment, each induction coil is fixedly provided with a limiting block on the side near the synchronizing cylinder. The limiting block is detachably fixed to the alumina ceramic plate by bolts, which facilitates the adjustment of the distance between the two induction coils and thus allows for the use of alloy blocks of different widths, providing high flexibility.

[0011] In a preferred embodiment, the limiting mechanism includes a top plate, and each top plate is fixedly provided with a pressure plate and a second synchronous cylinder at its bottom. The bottom of the pressure plate contacts the top of multiple alloy blocks, and the bottom end of the second synchronous cylinder is fixed to the top of the induction welding worktable. The top plate is driven to rise and fall by means of the second synchronous cylinder, so that the height of the top plate and the pressure plate can be automatically adjusted without manual adjustment, which is very convenient to use.

[0012] In a preferred embodiment, vertical plates are fixedly provided on both sides of the bottom of the top plate, and threaded rods are threaded through the two vertical plates and threadedly connected to the vertical plates. A limiting plate is rotatably provided at the end of the threaded rod near the alloy block. The two limiting plates are both located between the two induction coils. The two limiting plates play a limiting role on both sides of the multiple alloy blocks, which can greatly improve the stability of the movement of the alloy blocks and prevent the alloy blocks from deviating, thus affecting the welding accuracy of the alloy blocks and the rocket head and tail feathers.

[0013] In a preferred embodiment, each top plate has two positioning rods running through its top. The two positioning rods are distributed on both sides of the synchronous cylinder and the pressure plate. The bottom ends of the positioning rods are fixed to the top of the induction welding worktable. The two positioning rods slide on both sides of the top plate, which can improve the stability of the top plate when it is raised or lowered.

[0014] In a preferred embodiment, the bottom end of the support frame is provided with multiple fixing holes, which are arranged in a circular array on the support frame to fix the support frame and greatly improve the stability of the induction welding workbench.

[0015] The technical effects and advantages of this invention are as follows:

[0016] 1. This invention uses a pneumatic chuck to fix the rocket head, and a synchronous cylinder to drive a polysulfone slider to push multiple alloy blocks to contact the tail feathers of the rocket head in sequence. Then, two induction coils are used to heat the alloy blocks, thereby achieving the welding of the alloy blocks to the tail feathers of the rocket head and realizing the embedding of the rocket head alloy blocks. The welding efficiency is high.

[0017] 2. By using pressure plates to limit the movement of multiple alloy blocks that are not in contact with the rocket head, the stability of the multiple alloy blocks is improved, which can prevent the alloy from falling into the mounting holes.

[0018] 3. The height of the pressure plate is automatically adjusted by the synchronous cylinder, and the two limit plates on both sides of the alloy block play a limiting role. Together with the pressure plate, the positioning accuracy of the alloy block can be ensured, and the alloy block displacement can be avoided, which will affect the welding with the rocket head. At the same time, the position of the two limit plates can be adjusted to accommodate alloy blocks of different widths. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is a top view of the overall structure of the present invention;

[0022] Figure 4 This is a top view of the induction welding worktable of the present invention;

[0023] Figure 5 This is a schematic diagram of the induction heating mechanism, alloy block, and limiting mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the induction heating mechanism of the present invention;

[0025] Figure 7 This is a schematic diagram of the limiting mechanism structure of the present invention;

[0026] Figure 8 for Figure 7 A bottom view.

[0027] The attached figures are labeled as follows: 1. Induction welding worktable; 2. Mounting hole; 3. Pneumatic chuck; 4. Support frame; 5. Induction heating mechanism; 6. Alloy block; 7. Limiting mechanism; 8. Mounting groove; 9. Limiting block; 10. Bolt; 11. Positioning rod; 12. Fixing hole;

[0028] 501. Synchronous cylinder one; 502. Polysulfone slider; 503. Alumina ceramic plate; 504. Induction coil;

[0029] 701. Top plate; 702. Pressure plate; 703. Synchronous cylinder II; 704. Vertical plate; 705. Threaded rod; 706. Limiting plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Refer to the instruction manual appendix Figure 1-8This invention provides a rocket head welding alloy device for injection molding machines, including an induction welding worktable 1. The induction welding worktable 1 has a mounting hole 2 at the center of its top. A pneumatic chuck 3 for fixing the rocket head is fixed at the center of the bottom of the induction welding worktable 1. Specifically, the pneumatic chuck 3 is a clamping device powered by compressed air. The specific principle of the pneumatic chuck 3 is as follows: when compressed air enters the cylinder of the chuck through the pneumatic control system, the piston in the cylinder pushes the transmission mechanism, causing the jaws to move towards the center and clamp the rocket head. When it is necessary to release the rocket head, the control valve switches the flow direction of the compressed air, causing the piston in the cylinder to move in the opposite direction, driving the transmission mechanism to open the jaws outward. The pneumatic chuck 3 is connected to the mounting hole 2. A support frame 4 is fixed at the bottom of the induction welding worktable 1, and the support frame 4 is sleeved on the outside of the pneumatic chuck 3.

[0032] The top of the induction welding workbench 1 is provided with multiple induction heating mechanisms 5. Each induction heating mechanism 5 includes a synchronous cylinder 501 that is detachably fixed to the top of the induction welding workbench 1. One end of the piston rod of each synchronous cylinder 501 is fixed with a polysulfone slider 502. The polysulfone slider 502 is a slider made of polysulfone material, which has the advantages of high temperature resistance and high mechanical strength. Therefore, the polysulfone slider 502 has a long service life and is suitable for welding the rocket head and alloy block 6 of the injection molding machine.

[0033] The polysulfone slider 502 has an alumina ceramic plate 503 at its bottom. The induction welding workbench 1 has multiple mounting slots 8 at its top. The multiple alumina ceramic plates 503 are detachably fixed inside the multiple mounting slots 8, which facilitates the replacement of the alumina ceramic plates 503 by the staff. Each alumina ceramic plate 503 is fixed with two symmetrically distributed induction coils 504. Specifically, the induction coil 504 is a device that works by the principle of electromagnetic induction. When an alternating current is passed through the induction coil 504, an alternating magnetic field is generated around it. The alloy block placed in this magnetic field will generate an induced current, i.e., an eddy current, due to electromagnetic induction. The eddy current flows inside the alloy block. Since the alloy block has a certain resistance, the eddy current will cause the alloy block to heat up, thereby achieving the purpose of heating.

[0034] Each alumina ceramic plate 503 has multiple alloy blocks 6 on its top. Driven by a synchronous cylinder 501, the multiple alloy blocks 6 are sequentially welded to multiple rocket head and tail feather parts, resulting in high processing efficiency. The bottom end of the support frame 4 has multiple fixing holes 12, which are arranged in a ring array on the support frame 4 for installing the induction welding worktable 1.

[0035] In use, first, pass the rocket head through the mounting hole 2 and insert it into the pneumatic chuck 3, making the bottom of the rocket head's tail feathers flush with the top of the induction welding worktable 1. Then, stack multiple alloy blocks 6 horizontally on the alumina ceramic plate 503. Next, use the synchronous cylinder 501 to drive the polysulfone slider 502 to move, pushing the alloy blocks 6 towards the rocket head. The alloy blocks 6 move from the alumina ceramic plate 503 onto the induction welding worktable 1 and continue moving until the alloy block 6 furthest from the polysulfone slider 502 contacts the tail feathers of the rocket head. Two induction coils 504 are positioned on either side of the alloy block 6 in contact with the rocket head's tail feathers. The two induction coils 504 are used to heat the alloy block 6. Figure 1 , 5 As shown in Figures 6 and 6, this is used to weld the alloy block 6 to the tail feathers of the rocket nose, thus achieving the embedding of the rocket nose alloy block 6.

[0036] After welding is completed, the rocket head is removed and a new rocket head is placed. Then, the synchronous cylinder 501 drives multiple alloy blocks 6 to continue moving, so that the alloy blocks 6 are welded to the tail feathers of the new rocket head, thereby greatly improving the welding efficiency of the rocket head on the injection molding machine.

[0037] Refer to the instruction manual appendix Figure 1-3 5, 7-8, The top of the induction welding workbench 1 is fixedly provided with multiple limiting mechanisms 7 to limit multiple alloy blocks 6. Each induction coil 504 is fixedly provided with a limiting block 9 on the side near the synchronous cylinder 501. The limiting block 9 is detachably fixed to the alumina ceramic plate 503 by bolts 10, which facilitates the removal of the limiting block and the induction coil 504 for inspection and replacement of the induction coil 504.

[0038] The limiting mechanism 7 includes a top plate 701. Each top plate 701 has a pressure plate 702 and a second synchronous cylinder 703 fixedly installed at its bottom. The bottom of the pressure plate 702 contacts the top of multiple alloy blocks 6. The bottom of the second synchronous cylinder 703 is fixed to the top of the induction welding worktable 1. The top plate 1 is driven to rise and fall by means of the second synchronous cylinder 703, so that the height of the top plate 701 and the pressure plate 702 can be automatically adjusted without manual adjustment, which is very convenient to use.

[0039] Synchronous cylinder 501 and synchronous cylinder 703 are both cylindrical metal components that guide the piston to perform linear reciprocating motion within the cylinder. Specifically, when compressed air is input from the rodless chamber, the rod chamber exhausts air. The pressure difference between the two chambers of the cylinder acts on the piston, and the force generated overcomes the resistance load, pushing the piston to move and causing the piston rod to extend. When air is input into the rod chamber and exhausted from the rodless chamber, the piston rod retracts. If the rod chamber and rodless chamber alternately input and exhaust air, the piston achieves reciprocating linear motion.

[0040] Furthermore, vertical plates 704 are fixedly provided on both sides of the bottom of the top plate 701. Threaded rods 705 pass through both vertical plates 704 and are threadedly connected to the vertical plates 704. A limiting plate 706 is rotatably provided near one end of the threaded rod 705 close to the alloy block 6. Both limiting plates 706 are located between the two induction coils 504. The two limiting plates 706 limit the movement of the multiple alloy blocks 6 on both sides, thereby greatly improving the stability of the movement of the alloy blocks 6 and preventing the alloy blocks 6 from shifting, which would affect the welding accuracy of the alloy blocks 6 to the rocket head and tail feathers.

[0041] Furthermore, two positioning rods 11 are inserted through the top of each top plate 701. The two positioning rods 11 are distributed on both sides of the synchronous cylinder 703 and the pressure plate 702. The bottom end of the positioning rod 11 is fixed to the top of the induction welding worktable 1. The two positioning rods 11 slide on both sides of the top plate 701. The stability of the top plate 701 during lifting and lowering can be improved by means of the positioning rods 11.

[0042] By setting a limiting mechanism on the outside of each alumina ceramic plate 503, specifically, whenever an alloy block 6 contacts the tail feather part of the rocket head, the second synchronous cylinder 703 drives the top plate 701 to move down, so that the pressure plate 702 presses on the remaining alloy blocks 6, thereby improving the stability of the multiple alloy blocks 6 and preventing the alloy from falling into the mounting hole 2. After the rocket head is repositioned, the second synchronous cylinder 703 is used to drive the pressure plate 702 to move up first, and then the first synchronous cylinder 501 is used to push the alloy block 6 to feed. The two limiting plates 706 play a limiting role on both sides of the alloy block 6, thereby ensuring the positioning accuracy of the alloy block 6. In addition, the operator can turn the threaded rod 705 to adjust the position of the limiting plates 706, thereby adjusting the distance between the two limiting plates 706, which can be used for alloy blocks 6 of different widths.

[0043] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rocket head fusion welding alloy device for injection molding machines, comprising an induction fusion welding worktable (1), characterized in that: The induction melting welding workbench (1) is provided with a mounting hole (2) in the center of the top, a pneumatic chuck (3) for fixing a rocket head is fixed at the center of the bottom of the induction melting welding workbench (1), the pneumatic chuck (3) is communicated with the mounting hole (2), a support frame (4) is fixed at the bottom of the induction melting welding workbench (1), and the support frame (4) is sleeved outside the pneumatic chuck (3). A plurality of induction heating mechanisms (5) are arranged on the top of the induction melting welding workbench (1), each induction heating mechanism (5) comprises a synchronous cylinder I (501) which is detachably fixed on the top of the induction melting welding workbench (1), a polysulfone sliding block (502) is fixed at one end of the piston rod of each synchronous cylinder I (501), an alumina ceramic plate (503) is arranged at the bottom of the polysulfone sliding block (502), and two symmetrical induction coils (504) are fixed above each alumina ceramic plate (503). A plurality of alloy blocks (6) are arranged on the top of each alumina ceramic plate (503), and a plurality of limiting mechanisms (7) are fixed on the top of the induction melting welding workbench (1) and used for limiting the plurality of alloy blocks (6). A limiting block (9) is fixed at the side, close to the synchronous cylinder I (501), of each induction coil (504), and the limiting block (9) is detachably fixed with the alumina ceramic plate (503) through bolts (10). The limiting mechanism (7) comprises a top plate (701), a pressing plate (702) and a synchronous cylinder II (703) are fixed at the bottom of each top plate (701), the pressing plate (702) is in contact with the top of the plurality of alloy blocks (6), and the bottom end of the synchronous cylinder II (703) is fixed to the top of the induction melting welding workbench (1). Vertical plates (704) are fixed at the two sides of the bottom of the top plate (701), threaded rods (705) penetrate through the two vertical plates (704) and are in threaded connection with the vertical plates (704), and limiting plates (706) are rotatably arranged at the ends, close to the alloy blocks (6), of the threaded rods (705).

2. A rocket head welding alloy apparatus for an injection molding machine according to claim 1, characterized by: A plurality of mounting grooves (8) are formed in the top of the induction melting welding workbench (1), and the plurality of alumina ceramic plates (503) are detachably fixed in the mounting grooves (8).

3. A rocket head welding alloy apparatus for an injection molding machine as defined in claim 1, wherein: Two positioning rods (11) penetrate through the top of each top plate (701) and are arranged on the two sides of the synchronous cylinder II (703) and the pressing plate (702), and the bottom ends of the positioning rods (11) are fixed to the top of the induction melting welding workbench (1).

4. A rocket head welding alloy apparatus for an injection molding machine as defined in claim 1, wherein: A plurality of fixing holes (12) are formed in the bottom end of the support frame (4) and are arranged in a ring array on the support frame (4).

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