Rocket head fusion welding alloy device for injection molding machine

Abstract

The invention discloses a rocket head fusion welding alloy device for an injection molding machine, and particularly relates to the technical field of injection molding machine rocket head fusion welding, the rocket head fusion welding alloy device comprises an induction fusion welding workbench, a mounting hole is formed in the center of the top of the induction fusion welding workbench, and a pneumatic chuck used for fixing a rocket head is fixedly arranged in the center of the bottom of the induction fusion welding workbench; the pneumatic chuck is communicated with the mounting hole, a supporting rack is fixedly arranged at the bottom of the induction fusion welding workbench and arranged on the outer side of the pneumatic chuck in a sleeving mode, and a plurality of induction heating mechanisms are arranged at the top of the induction fusion welding workbench. The rocket head is fixed through the pneumatic chuck, the first synchronous air cylinder is used for driving the polysulfone sliding block to push the multiple alloy blocks to make contact with the tail feather part of the rocket head in sequence, then the two induction coils are used for heating the alloy blocks, and therefore welding of the alloy blocks and the tail feather part of the rocket head is achieved, embedding of the alloy blocks of the rocket head is achieved, and the welding efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of rocket head fusion welding for injection molding machines, in particular to a rocket head fusion welding alloy device for injection molding machines. Background Art

[0002] The rocket head fusion welding alloy device for injection molding machines is mainly used for fusion welding alloy treatment of the rocket head of the injection molding machine. The rocket head is a key component in the injection molding machine and is subjected to high temperature, high pressure and wear during the injection molding process. Through the fusion welding alloy device, a layer of high-performance alloy material can be clad on the surface of the rocket head to improve 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 are subjected to high wear, high corrosion and high impact conditions at the same time, and the life of the rocket head is very short. As a rocket head part material, it needs to meet harsh conditions such as high strength, high impact toughness, high corrosion resistance and high wear resistance. Existing injection molding machine rocket heads usually adopt welding to weld alloys on their surface.

[0003] For example, the prior art publication number is CN115740713A, which is an inlaid alloy rocket head, a welding structure and a manufacturing method thereof. When processing a rocket head, the prior art has a wear-resistant and corrosion-resistant alloy block welded on the outside of the cone of the rocket head body. The wear-resistant and corrosion-resistant alloy block is made of ternary boride or cemented carbide, has high hardness, wear resistance, and corrosion resistance, and is suitable for processing special plastics.

[0004] However, traditional plastic mold steel, stainless steel, nickel-based alloys, etc. have certain corrosion resistance and severe wear, while high-speed steel, powder steel, etc. have higher wear resistance and severe corrosion. It is difficult for existing technologies to simultaneously meet high corrosion resistance and high wear resistance, and alloy blocks may fall into the mounting holes during the feeding process, requiring staff to use tools to remove them, which is very inconvenient to operate. Based on this, the present invention provides a rocket head welding alloy device for an injection molding machine. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rocket head alloy welding device for an injection molding machine, in which a pneumatic chuck and a polysulfone slider are cooperated to fix the alloy block to the tail feather part of the rocket head, and two induction coils are used to heat the alloy block to achieve welding of the alloy block to the tail feather part of the rocket head. The welding efficiency is high, and a pressure plate is used to limit the alloy block, thereby improving the stability of multiple alloy blocks, and can avoid the problem of alloy falling into the mounting hole, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rocket head alloy welding device for an injection molding machine, comprising an induction welding workbench, a mounting hole is provided at the center of the top of the induction welding workbench, and a pneumatic chuck for fixing the rocket head is fixedly provided at the center of the bottom of the induction welding workbench. Specifically, the pneumatic chuck is a clamping device with compressed air as a power source. The specific principle of the pneumatic chuck is that 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 claws toward the center and clamp the rocket head. When the rocket head needs to be released, the control valve switches the flow direction of the compressed air to make the piston in the cylinder move in the opposite direction, driving the transmission mechanism to open the claws outward. The pneumatic chuck is connected to the mounting hole, and a support frame is fixedly provided at the bottom of the induction welding workbench, and the support frame is sleeved on the outside of the pneumatic chuck.

[0007] A plurality of induction heating mechanisms are arranged on the top of the induction welding workbench, each of which includes a synchronous cylinder 1 that is detachably fixed on the top of the induction welding workbench, a polysulfone slider is fixed on one end of the piston rod of each synchronous cylinder 1, an alumina ceramic plate is arranged at the bottom of the polysulfone slider, and two symmetrically distributed induction coils are fixed above each alumina ceramic plate. Specifically, the induction coil is a device that works on 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., 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] A plurality of alloy blocks are arranged on the top of each alumina ceramic plate, and a plurality of limiting mechanisms are fixedly arranged on the top of the induction welding workbench for limiting the plurality of alloy blocks.

[0009] In a preferred embodiment, a plurality of mounting grooves are provided on the top of the induction welding workbench, and a plurality of alumina ceramic plates are detachably fixed in the plurality of mounting grooves, respectively, so that workers can disassemble the alumina ceramic plates for replacement.

[0010] In a preferred embodiment, a limit block is fixedly provided on one side of each induction coil close to the synchronous cylinder. The limit block is detachably fixed to the alumina ceramic plate by bolts, which facilitates the adjustment of the distance between the two induction coils and is suitable for alloy blocks of different widths, with high flexibility.

[0011] In a preferred embodiment, the limiting mechanism includes a top plate, and a pressure plate and a synchronous cylinder 2 are fixedly provided at the bottom of each top plate. The bottom of the pressure plate contacts the tops of multiple alloy blocks, and the bottom end of the synchronous cylinder 2 is fixed to the top of the induction welding workbench. The top plate is driven to rise and fall with the help of the synchronous cylinder 2, 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, threaded rods are passed through the two vertical plates, and the threaded rods are threadedly connected to the vertical plates. A limit plate is provided for rotation of the threaded rod close to one end of the alloy block, and the two limit plates are arranged between the two induction coils. The two limit plates are used to limit the two sides of the multiple alloy blocks, thereby greatly improving the stability of the movement of the alloy blocks, avoiding the deviation of the alloy blocks, and affecting the welding accuracy of the alloy blocks and the tail feathers of the rocket head.

[0013] In a preferred embodiment, two positioning rods are passed through the top of each top plate, and the two positioning rods are distributed on both sides of the synchronous cylinder 2 and the pressure plate. The bottom end of the positioning rod is fixed to the top of the induction welding workbench, and the two positioning rods slide on both sides of the top plate. The positioning rods can be used to improve the stability of the top plate when it is lifted or lowered.

[0014] In a preferred embodiment, a plurality of fixing holes are provided at the bottom end of the support frame, and the plurality of fixing holes are distributed in a circular array on the support frame for fixing the support frame, thereby greatly improving the stability of the induction welding workbench.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention fixes the rocket head through a pneumatic chuck, uses a synchronous cylinder to drive a polysulfone slider to push multiple alloy blocks to contact the tail feather part of the rocket head in turn, and then uses two induction coils to heat the alloy blocks, thereby realizing the welding of the alloy blocks and the tail feather part of the rocket head, realizing the inlay of the rocket head alloy blocks, and the welding efficiency is high.

[0017] 2. The multiple alloy blocks that are not in contact with the rocket head are limited by the pressure plate to improve the stability of the multiple alloy blocks and avoid the problem of the alloy falling into the installation hole;

[0018] 3. The height of the pressing plate is automatically adjusted by the synchronous cylinder 2, and the two limit plates play a limiting role on both sides of the alloy block. The pressing plate can ensure the positioning accuracy of the alloy block and prevent the deviation of the alloy block from affecting the welding with the rocket head. At the same time, the position of the two limit plates can be adjusted to adapt to alloy blocks of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0022] Figure 4 A top view of the induction welding workbench of the present invention;

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

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

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

[0026] Figure 8 for Figure 7 Bottom view of .

[0027] The accompanying drawings are marked as follows: 1. induction welding workbench; 2. mounting hole; 3. pneumatic chuck; 4. support frame; 5. induction heating mechanism; 6. alloy block; 7. limit mechanism; 8. mounting groove; 9. limit block; 10. bolt; 11. positioning rod; 12. fixing hole;

[0028] 501, synchronous cylinder 1; 502, polysulfone slider; 503, alumina ceramic plate; 504, induction coil;

[0029] 701, top plate; 702, pressure plate; 703, synchronous cylinder 2; 704, vertical plate; 705, threaded rod; 706, limit plate. DETAILED DESCRIPTION

[0030] 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.

[0031] Refer to the instruction manual Figure 1-8The present invention provides a rocket head alloy welding device for an injection molding machine, comprising an induction welding workbench 1, a mounting hole 2 is opened at the center of the top of the induction welding workbench 1, and a pneumatic chuck 3 for fixing the rocket head is fixedly provided at the center of the bottom of the induction welding workbench 1. Specifically, the pneumatic chuck 3 is a clamping device with compressed air as a power source. The specific principle of the pneumatic chuck 3 is that 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 claws toward the center and clamp the rocket head. When the rocket head needs to be released, the control valve switches the flow direction of the compressed air to make the piston in the cylinder move in the opposite direction, driving the transmission mechanism to open the claws outward. The pneumatic chuck 3 is connected with the mounting hole 2, and a supporting frame 4 is fixedly provided at the bottom of the induction welding workbench 1, and the supporting frame 4 is sleeved on the outside of the pneumatic chuck 3;

[0032] The top of the induction welding workbench 1 is provided with a plurality of induction heating mechanisms 5, each of which includes a synchronous cylinder 501 detachably fixed to the top of the induction welding workbench 1, and one end of the piston rod of each synchronous cylinder 501 is fixed with a polysulfone slider 502, which is a slider made of polysulfone material and 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 of the injection molding machine and the alloy block 6;

[0033] An alumina ceramic plate 503 is provided at the bottom of the polysulfone slider 502, and a plurality of mounting grooves 8 are provided on the top of the induction welding workbench 1. The plurality of alumina ceramic plates 503 are respectively detachably fixed inside the plurality of mounting grooves 8, so that the staff can replace the alumina ceramic plates 503 conveniently. Two symmetrically distributed induction coils 504 are fixed above each alumina ceramic plate 503. Specifically, the induction coil 504 is a device that works on 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., 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 make the alloy block heat up, thereby achieving the purpose of heating.

[0034] A plurality of alloy blocks 6 are provided on the top of each alumina ceramic plate 503. Driven by a synchronous cylinder 501, the plurality of alloy blocks 6 are welded to a plurality of rocket head and tail feather parts in sequence, with high processing efficiency. A plurality of fixing holes 12 are provided at the bottom end of the support frame 4. The plurality of fixing holes 12 are distributed in a circular array on the support frame 4 for installing an induction welding workbench 1.

[0035] When in use, first pass the rocket head through the mounting hole 2 and insert it into the pneumatic chuck 3, so that the bottom of the rocket head tail feather part is flush with the top of the induction welding workbench 1, and then stack multiple alloy blocks 6 horizontally on the alumina ceramic plate 503, and then use the synchronous cylinder 1 501 to drive the polysulfone slider 502 to move and push the multiple alloy blocks 6 toward the rocket head. The alloy block 6 moves from the alumina ceramic plate 503 to the induction welding workbench 1 and continues to move until an alloy block 6 farthest from the polysulfone slider 502 contacts the rocket head tail feather part, and every two induction coils 504 are arranged on both sides of the alloy block 6 in contact with the rocket head tail feather part, and the two induction coils 504 are used to heat the alloy block 6. Figure 1 , 5 , 6, thereby realizing the welding of the alloy block 6 and the tail feather part of the rocket head, and realizing the inlay of the rocket head alloy block 6;

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

[0037] Refer to the instruction manual Figure 1-3 , 5, 7-8, a plurality of limiting mechanisms 7 are fixedly provided on the top of the induction welding workbench 1 for limiting a plurality of alloy blocks 6, and a limiting block 9 is fixedly provided on the side of each induction coil 504 close to the synchronous cylinder 1 501, and the limiting block 9 is detachably fixed to the alumina ceramic plate 503 by bolts 10, so as to facilitate the removal of the limiting block and the induction coil 504 and the inspection and replacement of the induction coil 504;

[0038] The limiting mechanism 7 includes a top plate 701, and a pressing plate 702 and a second synchronous cylinder 703 are fixedly provided at the bottom of each top plate 701. The bottom of the pressing plate 702 contacts the top of a plurality of alloy blocks 6, and the bottom end of the second synchronous cylinder 703 is fixed to the top of the induction welding workbench 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 pressing plate 702 can be automatically adjusted without manual adjustment, which is very convenient to use;

[0039] Synchronous cylinder 1 501 and synchronous cylinder 2 703 are both cylindrical metal parts that guide the piston to perform linear reciprocating motion in the cylinder. The specific principle is that when compressed air is input from the rodless chamber, the rod chamber is exhausted, and the pressure difference between the two chambers of the cylinder acts on the piston to form a force that overcomes the resistance load and pushes the piston to move, so that the piston rod extends; when the rod chamber is filled with air and the rodless chamber is exhausted, the piston rod is retracted. If the rod chamber and the rodless chamber are alternately filled with air and exhausted, the piston realizes reciprocating linear motion;

[0040] In addition, vertical plates 704 are fixedly provided on both sides of the bottom of the top plate 701, and threaded rods 705 are passed through the two vertical plates 704, and the threaded rods 705 are threadedly connected to the vertical plates 704. A limit plate 706 is rotatably provided at one end of the threaded rod 705 close to the alloy block 6, and the two limit plates 706 are arranged between the two induction coils 504. The two limit plates 706 are used to limit the two sides of the multiple alloy blocks 6, thereby greatly improving the stability of the movement of the alloy block 6, avoiding the deviation of the alloy block 6, and affecting the welding accuracy of the alloy block 6 and the tail feather part of the rocket head;

[0041] Moreover, two positioning rods 11 are passed through the top of each top plate 701. The two positioning rods 11 are distributed on both sides of the synchronous cylinder 2 703 and the pressure plate 702. The bottom ends of the positioning rods 11 are fixed to the top of the induction welding workbench 1. The two positioning rods 11 slide on both sides of the top plate 701. With the help of the positioning rods 11, the stability of the top plate 701 during lifting and lowering can be improved.

[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 synchronous cylinder 2 703 drives the top plate 701 to move downward, so that the pressure plate 702 is pressed on the remaining multiple alloy blocks 6, so as to improve the stability of the multiple alloy blocks 6 and avoid the problem of alloy falling into the mounting hole 2. After re-placing the rocket head, the synchronous cylinder 2 703 is first used to drive the pressure plate 702 to move upward, and then the synchronous cylinder 1 501 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 to ensure the positioning accuracy of the alloy block 6, and the staff can turn the threaded rod 705 to adjust the position of the limiting plate 706, and then the distance between the two limiting plates 706 can be adjusted, which can be suitable for alloy blocks 6 of different widths.

[0043] Finally: 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 in the protection scope of the present invention.

Claims

1. A rocket head alloy welding device for an injection molding machine, comprising an induction welding workbench (1), characterized in that: A mounting hole (12) (2) is provided at the center of the top of the induction welding workbench (1); a pneumatic chuck (3) for fixing the rocket head is fixedly provided at the center of the bottom of the induction welding workbench (1); the pneumatic chuck (3) is connected to the mounting hole (12) (2); a supporting frame (4) is fixedly provided at the bottom of the induction welding workbench (1); the supporting frame (4) is sleeved on the outside of the pneumatic chuck (3); The top of the induction welding workbench (1) is provided with a plurality of induction heating mechanisms (5), each of the induction heating mechanisms (5) comprises a synchronous cylinder (501) detachably fixed to the top of the induction welding workbench (1), a polysulfone slider (502) is fixedly provided at one end of the piston rod of each synchronous cylinder (501), an alumina ceramic plate (503) is provided at the bottom of the polysulfone slider (502), and two symmetrically distributed induction coils (504) are fixedly provided 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 fixedly arranged on the top of the induction welding workbench (1) for limiting the plurality of alloy blocks (6).

2. The device for welding alloys with a rocket head for an injection molding machine according to claim 1, characterized in that: The top of the induction welding workbench (1) is provided with a plurality of mounting grooves (8), and a plurality of alumina ceramic plates (503) are respectively detachably fixed inside the plurality of mounting grooves (8).

3. The device for welding alloys of a rocket head for an injection molding machine according to claim 1, characterized in that: A limiting block (9) is fixedly provided on one side of each induction coil (504) close to the synchronous cylinder (501), and the limiting block (9) is detachably fixed to the alumina ceramic plate (503) by bolts (10).

4. The device for welding alloys of a rocket head for an injection molding machine according to claim 1, characterized in that: The limiting mechanism (7) comprises a top plate (701), and a pressure plate (702) and a second synchronous cylinder (703) are fixedly provided at the bottom of each top plate (701), the bottom of the pressure plate (702) contacts the tops of a plurality of alloy blocks (6), and the bottom end of the second synchronous cylinder (703) is fixed to the top of the induction welding workbench (1).

5. The device for welding alloys of a rocket head for an injection molding machine according to claim 4, characterized in that: Vertical plates (704) are fixedly provided on both sides of the bottom of the top plate (701), and threaded rods (705) are passed through the two vertical plates (704). The threaded rods (705) are threadedly connected to the vertical plates (704), and a limit plate (706) is rotatably provided at one end of the threaded rod (705) close to the alloy block (6), and the two limit plates (706) are arranged between the two induction coils (504).

6. The device for welding alloys with a rocket head for an injection molding machine according to claim 4, characterized in that: Two positioning rods (11) are passed through the top of each top plate (701), and the two positioning rods (11) are distributed on both sides of the synchronous cylinder 2 (703) and the pressure plate (702), and the bottom ends of the positioning rods (11) are fixed to the top of the induction welding workbench (1).

7. The device for welding alloys with a rocket head for an injection molding machine according to claim 1, characterized in that: A plurality of fixing holes (12) are provided at the bottom end of the support frame (4), and the plurality of fixing holes (12) are distributed in a ring array on the support frame (4).

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