Equipment and method for welding rocket head of injection molding machine

Abstract

The invention discloses injection molding machine rocket head welding equipment and method, and particularly relates to the technical field of welding equipment.The injection molding machine rocket head welding equipment comprises a workbench, an injection molding machine rocket head is arranged on the workbench, a plurality of fixing assemblies are arranged at the top end of the workbench, and the fixing assemblies are located on the outer side of the injection molding machine rocket head; a base is arranged at the bottom of the workbench, a sleeve is fixedly arranged at the top end of the base, a supporting plate is arranged in the sleeve, the top end of the supporting plate makes contact with the bottom end of an injection molding machine rocket head, a vibration motor and two buffer springs are fixedly arranged at the bottom end of the supporting plate, and the bottom ends of the buffer springs are fixedly connected with the inner wall of the sleeve. The supporting plate is driven by the vibration motor to vibrate, then the injection molding machine rocket head and the alloy block are driven to vibrate, the vibration can promote flowing of the molten parts of the injection molding machine rocket head and the alloy block, the molten parts of the injection molding machine rocket head and the alloy block can be mixed more uniformly, the mixing effect is improved, and connection is firmer after solidification.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a welding device and method for a rocket head of an injection molding machine. Background Art

[0002] The rocket head of the injection molding machine is an accessory for the injection molding machine, also known as the glue head or the glue dispensing head. Its main function is to mix the plastic melt to make the melt mixed evenly, and at the same time it plays the role of limiting the front and rear position movement of the glue ring.

[0003] In order to increase the service life of the rocket head of the injection molding machine, in the prior art, a metal ceramic block is inlaid and welded at the tail feather of the rocket head made of mold steel, so that the corrosion resistance and wear resistance of the rocket head are improved, thereby increasing the service life.

[0004] In the process of welding the metal ceramic block, it is necessary to press and fix the metal ceramic block on the tail feather part of the rocket head, and then use high-frequency heating equipment to melt the contact part between the metal ceramic block and the rocket head. The contact part is thus fused together, and after cooling and solidification, it can be connected into one, thus completing the welding.

[0005] However, during the welding process, the metal ceramic block needs to be pressed against the outer end of the rocket head. When the contact area between the two melts, the melted parts of the two need to be mixed. However, the fluid formed after the metal melts is very viscous and has poor fluidity, so the mixing effect needs to be improved. Summary of the invention

[0006] The purpose of the present invention is to provide an injection molding machine rocket head welding device and method, which drives the injection molding machine rocket head and the alloy block to vibrate, and the vibration can promote the flow of the molten parts of the two, so that the molten parts of the two can be mixed more evenly, thereby improving the mixing effect, and the connection will be more firm after solidification.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an injection molding machine rocket head welding device, used for welding a plurality of alloy blocks to the outer end of the injection molding machine rocket head, comprising a workbench, the injection molding machine rocket head is arranged on the workbench, the top of the workbench is provided with a plurality of fixing components, the fixing components are located outside the injection molding machine rocket head;

[0008] A base is provided at the bottom of the workbench, a sleeve is fixedly provided at the top of the base, a support plate is provided inside the sleeve, the support plate is made of high temperature resistant insulating material, and the top of the support plate contacts the bottom of the rocket head of the injection molding machine;

[0009] A vibration motor and two buffer springs are fixedly arranged at the bottom end of the support plate, and the bottom end of the buffer spring is fixedly connected to the inner wall of the sleeve.

[0010] Furthermore, the fixing assembly corresponds to the alloy block one by one, and the fixing assembly is used to press and fix the corresponding alloy block on the outer end of the rocket head of the injection molding machine;

[0011] The fixing assembly comprises a cylinder arranged on the top of the workbench, a push rod is fixedly arranged at one end of the piston rod of the cylinder, a push plate is fixedly arranged at one end of the push rod, and the push plate is made of high-temperature resistant polysulfone material.

[0012] Furthermore, an alumina ceramic plate is embedded on the top of the workbench. The function of the alumina ceramic plate is electromagnetic insulation. A material distribution groove is provided on the top of the alumina ceramic plate. A mounting hole that penetrates the alumina ceramic plate is provided at the center of the alumina ceramic plate. The top of the mounting hole is located inside the material distribution groove.

[0013] Furthermore, a heating assembly is provided on the top of the injection molding machine rocket head, and the heating assembly includes a top plate located directly above the injection molding machine rocket head, and an electric push rod is fixed on the top of the top plate;

[0014] Induction coils are provided on both sides of each alloy block. A fixing column is fixedly provided at one end of the induction coil away from the alloy block. The top of the fixing column is fixedly connected to the bottom of the top plate. The induction coil is powered by a high-frequency heating power supply. All the induction coils are connected in series in the same circuit.

[0015] Furthermore, a plurality of supporting columns are provided between the workbench and the base, and an annular airbag made of high temperature resistant material is fixedly provided on the inner wall of the sleeve, and the annular airbag is elastic;

[0016] An air duct extending to the outside of the sleeve is fixedly provided at the outer end of the annular airbag, and air can enter and exit the annular airbag through the air duct. A valve is fixedly provided on the air duct. The lower half of the injection molding machine rocket head extends into the inside of the sleeve and is clamped and fixed by the annular airbag.

[0017] The present invention also includes a welding method for the injection molding machine rocket head welding device, and the specific steps are as follows:

[0018] Step 1: Extend the lower half of the injection molding machine rocket head through the mounting hole to the inside of the sleeve, and embed the upper half left on the workbench into the material distribution groove. The contour of the central part of the material distribution groove roughly fits the injection molding machine rocket head, so the injection molding machine rocket head can be embedded in the material distribution groove, and then inflate the annular airbag to expand it and shrink the inner space, and clamp the lower half of the injection molding machine rocket head;

[0019] Step 2: Place the alloy block inside the feeding trough. Multiple branches extend outside the central part of the feeding trough. One end of the branch extends to the workbench. The alloy block can be embedded inside the branch and move along the branch to the central part of the feeding trough under the push of the fixing component. Finally, it is embedded in the corresponding position of the outer end of the injection molding machine rocket head. The cylinder is extended to push the push rod and the push plate to move. The push plate pushes the alloy block to move and presses it to the corresponding position of the outer end of the injection molding machine rocket head.

[0020] Step 3: Then the electric push rod drives the heating component to move downward, and the heating component moves downward as a whole, so that the induction coil moves to the two sides of the corresponding alloy block, and then the induction coil is energized under the action of the high-frequency heating power supply. After the induction coil is energized, an induced eddy current will be generated in the alloy block and the injection molding machine rocket head. The eddy current will cause the alloy block and the injection molding machine rocket head to heat up and melt, so that the induction coil is used to heat the connection between the alloy block and the injection molding machine rocket head, and the metal at the connection part is melted and mixed, so as to perform welding;

[0021] Step 4: During the heating process, under the elastic force of the buffer spring, the support plate is in close contact with the rocket head of the injection molding machine. After the vibration motor is turned on, the vibration motor will make the support plate vibrate and affect the rocket head of the injection molding machine and the alloy block. The vibration of the rocket head of the injection molding machine and the alloy block can help mix the melted parts at the joint of the two. After heating is completed, the vibration motor stops vibrating;

[0022] Step 5: After heating, the high-frequency heating power supply is turned off, and the electric push rod drives the heating component to move up and return to its original position. After cooling and solidification, the fixing component loosens the alloy block and releases the clamping of the injection molding machine rocket head. The injection molding machine rocket head is removed from the workbench to complete the welding.

[0023] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0024] The vibration motor drives the support plate to vibrate, which in turn drives the rocket head of the injection molding machine and the alloy block to vibrate. The vibration can promote the flow of the molten parts of the two, so that the molten parts of the two can be mixed more evenly, thereby improving the mixing effect and making the connection stronger after solidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is the overall structure diagram of the present invention;

[0027] Figure 2 It is a structural diagram of the rocket head of the injection molding machine of the present invention;

[0028] Figure 3 It is a structural diagram of the fixing assembly of the present invention;

[0029] Figure 4 It is a structural diagram of the heating component of the present invention;

[0030] Figure 5 is a circuit diagram of an induction coil of the present invention;

[0031] Figure 6 It is a structural diagram of a workbench of the present invention;

[0032] Figure 7 It is a cross-sectional view of the sleeve of the present invention.

[0033] Description of reference numerals:

[0034] 1. Rocket head of injection molding machine; 101. Alloy block; 2. Workbench; 3. Alumina ceramic plate; 4. Base; 5. Fixed assembly; 501. Cylinder; 502. Push rod; 503. Push plate; 6. Heating assembly; 601. Top plate; 602. Fixed column; 603. Induction coil; 7. Buffer spring; 8. Electric push rod; 9. Mounting hole; 10. Material trough; 11. Column; 12. Sleeve; 13. Annular airbag; 14. Support plate; 15. Vibration motor. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] The present invention provides Figure 1-7 The device for welding a rocket head of an injection molding machine is used to weld a plurality of alloy blocks 101 to the outer end of a rocket head 1 of an injection molding machine, and comprises a workbench 2, on which the rocket head 1 of the injection molding machine is arranged, and a plurality of fixing components 5 are arranged on the top of the workbench 2, and the fixing components 5 are located on the outer side of the rocket head 1 of the injection molding machine;

[0037] An alumina ceramic flat plate 3 is inlaid on the top of the workbench 2. The function of the alumina ceramic flat plate 3 is electromagnetic insulation and will not heat the workbench 2. A distribution groove 10 is opened on the top of the alumina ceramic flat plate 3. A mounting hole 9 that penetrates the alumina ceramic flat plate 3 is opened at the center of the alumina ceramic flat plate 3, and the top of the mounting hole 9 is located inside the distribution groove 10.

[0038] The lower half of the injection molding machine rocket head 1 is extended through the mounting hole 9 to the bottom of the workbench 2 and clamped, and the upper half remaining above the workbench 2 is embedded in the material distribution groove 10. The contour of the central part of the material distribution groove 10 roughly fits the injection molding machine rocket head 1, so the injection molding machine rocket head 1 can be embedded in the material distribution groove 10, and the alloy block 101 is placed inside the material distribution groove 10. Multiple branches extend from the outside of the central part of the material distribution groove 10. The alloy block 101 can be embedded in the branch and move along the branch to the central part of the material distribution groove 10 under the push of the fixing component 5, and finally embedded in the corresponding position of the outer end of the injection molding machine rocket head 1.

[0039] Before welding, the alloy block 101 needs to be pressed and fixed on the outer end of the injection molding machine rocket head 1, such as Figure 1 , 3 As shown, the fixing assembly 5 corresponds to the alloy block 101 one by one, and the fixing assembly 5 is used to press and fix the corresponding alloy block 101 on the outer end of the injection molding machine rocket head 1. The fixing assembly 5 includes a cylinder 501 arranged on the top of the workbench 2, and a push rod 502 is fixed at one end of the piston rod of the cylinder 501;

[0040] A push plate 503 is fixedly disposed at one end of the push rod 502 . The push plate 503 contacts the corresponding alloy block 101 . The push plate 503 is made of high-temperature resistant polysulfone material.

[0041] The cylinder 501 is extended to push the push rod 502 and the push plate 503 to move, and the push plate 503 pushes the alloy block 101 to move and presses and fixes it at the corresponding position of the outer end of the rocket head 1 of the injection molding machine.

[0042] Welding is done using the principle of high frequency heating, such as Figure 1 , 4 As shown in , 5, a heating assembly 6 is provided on the top of the injection molding machine rocket head 1, and the heating assembly 6 includes a top plate 601 located directly above the injection molding machine rocket head 1, and an electric push rod 8 is fixedly provided on the top of the top plate 601, and the top of the electric push rod 8 is mounted and fixed on other objects outside the welding equipment;

[0043] An induction coil 603 is provided on both sides of each alloy block 101. The induction coil 603 can generate an induced current at the contact point between the injection molding machine rocket head 1 and the alloy block 101 and thereby heat the contact point between the two. A fixed column 602 is fixedly provided at one end of the induction coil 604 away from the alloy block 101. The top end of the fixed column 602 is fixedly connected to the bottom end of the top plate 601, and the overall height of the heating component 6 is controlled by the extension and retraction of the electric push rod 8.

[0044] The electric push rod 8 drives the heating component 6 to move downward, and the heating component 6 moves downward as a whole, so that the induction coil 603 moves to the corresponding two sides of the alloy block 101, and then the induction coil 603 is energized under the action of the high-frequency heating power supply. After the induction coil 603 is energized, an induced eddy current will be generated in the alloy block 101 and the injection molding machine rocket head 1. The eddy current will cause the alloy block 101 and the injection molding machine rocket head 1 to heat up and melt, so that the induction coil 603 is used to heat the connection between the alloy block 101 and the injection molding machine rocket head 1, and the metal at the connection part is melted and mixed. After the part is cooled and solidified, the alloy block 101 can be welded to the injection molding machine rocket head 1.

[0045] During the welding process, the lower part of the injection molding machine rocket head 1 needs to be fixed, such as Figure 7 As shown, a base 4 is provided at the bottom of the workbench 2, a plurality of supporting columns 11 are provided between the workbench 2 and the base 4, and a sleeve 12 is fixedly provided at the top of the base 4;

[0046] An annular airbag 13 made of high temperature resistant material is fixedly provided on the inner wall of the sleeve 12. The annular airbag 13 is insulated and can expand and contract its inner space after inflation. An air duct extending to the outside of the sleeve 12 is fixedly provided at the outer end of the annular airbag 13. A valve is fixedly provided on the air duct. The lower half of the injection molding machine rocket head 1 extends into the interior of the sleeve 12 and is clamped and fixed by the annular airbag 13.

[0047] The lower half of the rocket head 1 of the injection molding machine is extended through the mounting hole 9 to the inside of the sleeve 12, and then the annular airbag 13 is inflated to expand it and shrink the inner space, and the lower half of the rocket head 1 of the injection molding machine is clamped and fixed inside the sleeve 12 by the annular airbag 13.

[0048] In order to make the connection between the alloy block 101 and the injection molding machine rocket head 1 more secure, Figure 7 As shown, a support plate 14 is provided inside the sleeve 12, and the support plate 14 is made of insulating material. The top of the support plate 14 contacts the bottom end of the injection molding machine rocket head 1, and a vibration motor 15 and two buffer springs 7 are fixedly provided at the bottom end of the support plate 14, and the bottom end of the buffer spring 7 is fixedly connected to the inner wall of the sleeve 12.

[0049] During the heating process, under the elastic force of the buffer spring 7, the support plate 14 is in close contact with the injection molding machine rocket head 1. After turning on the vibration motor 15, the vibration motor 15 will cause the support plate 14 to vibrate and affect the injection molding machine rocket head 1 and the alloy block 101. The connecting parts of the two have been melted into fluid after heating. Under the action of vibration, the fluids can mix with each other. Therefore, the vibration makes the melted parts of the two mix more evenly, and the connection will be stronger after solidification.

[0050] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An injection molding machine rocket head welding device, used for welding a plurality of alloy blocks (101) to the outer end of an injection molding machine rocket head (1), comprising a workbench (2), wherein the injection molding machine rocket head (1) is arranged on the workbench (2), and characterized in that: A plurality of fixing components (5) are provided on the top of the workbench (2), and the fixing components (5) are located outside the rocket head (1) of the injection molding machine; The bottom of the workbench (2) is provided with a base (4), the top of the base (4) is fixedly provided with a sleeve (12), the interior of the sleeve (12) is provided with a support plate (14), and the top of the support plate (14) contacts the bottom of the rocket head (1) of the injection molding machine; A vibration motor (15) and two buffer springs (7) are fixedly provided at the bottom end of the support plate (14), and the bottom end of the buffer spring (7) is fixedly connected to the inner wall of the sleeve (12).

2. The injection molding machine rocket head welding equipment according to claim 1, characterized in that: The fixing assembly (5) corresponds to the alloy block (101) one by one, and the fixing assembly (5) is used to press and fix the corresponding alloy block (101) on the outer end of the rocket head (1) of the injection molding machine; The fixing assembly (5) comprises a cylinder (501) arranged at the top of the workbench (2), a push rod (502) being fixedly arranged at one end of the piston rod of the cylinder (501), and a push plate (503) being fixedly arranged at one end of the push rod (502).

3. The injection molding machine rocket head welding equipment according to claim 1, characterized in that: An alumina ceramic plate (3) is inlaid on the top of the workbench (2), a material distribution groove (10) is provided on the top of the alumina ceramic plate (3), a mounting hole (9) penetrating the alumina ceramic plate (3) is provided at the center of the alumina ceramic plate (3), and the top of the mounting hole (9) is located inside the material distribution groove (10).

4. The injection molding machine rocket head welding device according to claim 1, characterized in that: A heating assembly (6) is provided on the top of the injection molding machine rocket head (1), and the heating assembly (6) comprises a top plate (601) located directly above the injection molding machine rocket head (1), and an electric push rod (8) is fixedly provided on the top of the top plate (601); An induction coil (603) is provided on both sides of each alloy block (101), and a fixing column (602) is fixedly provided at one end of the induction coil (603) away from the alloy block (101), and the top end of the fixing column (602) is fixedly connected to the bottom end of the top plate (601).

5. The injection molding machine rocket head welding device according to claim 1, characterized in that: A plurality of supporting columns (11) are provided between the workbench (2) and the base (4), and an annular air bag (13) made of a high temperature resistant material is fixedly provided on the inner wall of the sleeve (12); An air guide tube extending to the outside of the sleeve (12) is fixedly provided at the outer end of the annular airbag (13), and a valve is fixedly provided on the air guide tube. The lower half of the injection molding machine rocket head (1) extends into the inside of the sleeve (12) and is clamped and fixed by the annular airbag (13).

6. A welding method for a rocket head welding device for an injection molding machine according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: Step 1: The lower half of the injection molding machine rocket head (1) is extended through the mounting hole (9) to the inside of the sleeve (12), and the upper half remaining above the workbench (2) is embedded in the material distribution groove (10), and then the annular airbag (13) is inflated to expand and shrink the inner space, and the lower half of the injection molding machine rocket head (1) is clamped and fixed; Step 2: placing the alloy block (101) inside the material distribution trough (10), and extending the cylinder (501) to push the push rod (502) and the push plate (503) to move, and the push plate (503) pushes the alloy block (101) to move and presses and fixes it at the corresponding position of the outer end of the injection molding machine rocket head (1); Step 3: Then the electric push rod (8) drives the heating assembly (6) to move downward, and the heating assembly (6) moves downward as a whole, so that the induction coil (603) moves to the two sides of the corresponding alloy block (101), and then the induction coil (603) is energized, and the connection between the alloy block (101) and the injection molding machine rocket head (1) is heated by the induction coil (603), and the metals at the connection part are melted and mixed, so as to perform welding; Step 4: During the heating process, under the elastic force of the buffer spring (7), the support plate (14) is in close contact with the injection molding machine rocket head (1). After the vibration motor (15) is turned on, the vibration motor (15) causes the support plate (14) to vibrate and affect the injection molding machine rocket head (1) and the alloy block (101). The vibration of the injection molding machine rocket head (1) and the alloy block (101) can help mix the melted parts at the joint between the two. After the heating is completed, the vibration motor (15) stops vibrating. Step 5: After heating, the induction coil (603) is powered off, and the electric push rod (8) drives the heating component (6) to move upward and return to its original position. After cooling and solidification, the fixing component (5) releases the alloy block (101) and releases the clamping of the injection molding machine rocket head (1). The injection molding machine rocket head (1) is removed from the workbench (2), and the welding is completed.

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