Wax injection device

Abstract

The utility model provides a wax injection device and relates to the technical field of lost wax casting. Comprising an equipment base, a conveying belt is arranged in the equipment base, a first positioning frame is fixedly installed on the equipment base, a second positioning frame is fixedly installed on the first positioning frame, a wax injection mechanism is fixedly installed at the upper end of the first positioning frame, the wax injection mechanism comprises a wax injection cylinder fixed to the first positioning frame, and a piston is movably installed in the wax injection cylinder; a wax inlet and a wax outlet are fixedly formed in the bottom of the wax injection barrel, one-way valves are arranged in the wax inlet and the wax outlet, a driving assembly is connected to the second positioning frame and comprises a driving air cylinder fixed to the second positioning frame, a lifting column is fixedly installed at the lower end of the driving air cylinder, and a cross beam frame is fixedly installed at the upper end of the lifting column. The driving assembly can drive a piston on the wax injection mechanism to move up and down, so that automatic wax injection is achieved, the wax injection head can be driven by the cross beam frame to move downwards before wax injection, the wax injection head is inserted into a pouring gate on a mold, and automatic butt joint of the wax injection head and the pouring gate of the mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, and particularly relates to a wax injection device. Background Art

[0002] Investment casting, also known as precision casting or the lost-wax process, is a precision casting process. In investment casting, first, a wax model of the desired casting is made. Subsequently, a refractory material is applied to the outer layer of the wax mold to form a clay shell. After the clay shell dries, the wax mold is melted and drained by heating to form a cavity for the casting. Then, molten metal is poured into the cavity. After cooling and solidifying, the casting is taken out and cleaned to obtain the finished product. When making the wax mold, a cavity is prepared through ordinary upper and lower mold dies, and then wax needs to be injected into the cavity to make the wax mold. The existing wax injection devices inject wax by manually aligning the wax injection heads with the molds one by one, which has low efficiency and cannot accurately control the wax injection volume during the wax injection process, causing the paraffin to flow out of the mold and resulting in waste of paraffin. For this reason, a wax injection device is proposed.

[0003] When making the wax mold, a cavity is prepared through ordinary upper and lower mold dies, and then wax needs to be injected into the cavity to make the wax mold. The existing wax injection devices inject wax by manually aligning the wax injection heads with the molds one by one, which has low efficiency and cannot accurately control the wax injection volume during the wax injection process, causing the paraffin to flow out of the mold and resulting in waste of paraffin. For this reason, a wax injection device is proposed. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The purpose of the utility model is to provide a wax injection device to solve the above problems and to solve the problem of low wax injection efficiency in the prior art.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: a wax injection device, including an equipment base, a conveyor belt is arranged inside the equipment base, a first positioning frame is fixedly installed on the equipment base, a second positioning frame is fixedly installed on the first positioning frame, a wax injection mechanism is fixedly installed at the upper end of the first positioning frame. The wax injection mechanism includes a wax injection cylinder fixed on the first positioning frame, a piston is movably installed inside the wax injection cylinder, a wax inlet and a wax outlet are fixedly installed at the bottom of the wax injection cylinder, one-way valves are arranged inside both the wax inlet and the wax outlet, a driving assembly is connected to the second positioning frame. The driving assembly includes a driving cylinder fixed on the second positioning frame, a lifting column is fixedly installed at the lower end of the driving cylinder, a cross beam frame is fixedly installed at the upper end of the lifting column, a positioning sleeve is arranged on the cross beam frame, a spring is arranged inside the positioning sleeve, a telescopic rod is movably installed on the positioning sleeve, a wax injection head is fixedly installed at the lower end of the cross beam frame, and the wax injection head is sleeved on the wax outlet. The cross beam frame can drive the wax injection head to move up and down.

[0008] Preferably, the wax injection mechanism further includes a driving push rod fixed on the piston. An activity chamber is provided at the upper end of the driving push rod, and the driving push rod can drive the piston to move up and down.

[0009] Preferably, through holes are provided on the upper surface of the first positioning frame. Both the wax inlet and the wax outlet extend into the inner side of the first positioning frame through the through holes, and paraffin can enter the wax injection cylinder through the wax inlet.

[0010] Preferably, the wax injection cylinder is installed above the conveyor belt through the first positioning frame. The lifting column is movably installed at the upper end of the driving push rod through the activity chamber. The one-way valve in the wax inlet only allows liquid to enter the wax injection cylinder through the wax inlet, and the one-way valve in the wax outlet only allows the liquid in the wax injection cylinder to be discharged through the wax outlet. A wax conveying pipeline is connected to the wax inlet.

[0011] Preferably, a limiting cap is provided at the lower end of the lifting column. The lifting column is restricted to move in the activity chamber through the limiting cap, and the limiting cap can move up and down in the activity chamber.

[0012] Preferably, a through hole is provided on the first positioning frame. The telescopic rod passes through the first positioning frame through the through hole. One end of the telescopic rod is movably installed in the positioning sleeve, and the other end of the telescopic rod is fixed on the cross beam frame.

[0013] Preferably, the driving cylinder is installed above the first positioning frame through the second positioning frame. One end of the spring is connected to the upper end of the positioning sleeve, and the other end of the spring is connected to the upper end of the telescopic rod. The wax injection head is movably installed at the wax outlet through the cross beam frame, and the spring will provide elastic force for the telescopic rod.

[0014] The present utility model provides a wax injection device, and the beneficial effects thereof are as follows:

[0015] 1. The driving cylinder can drive the piston to move up and down, thereby realizing wax injection. Moreover, the driving cylinder can drive the lifting column to move downward. After the lifting column moves downward, it will drive the cross beam frame to move downward. After the cross beam frame moves downward, it will drive the wax injection head to move downward, so that the wax injection head is inserted into the gate on the mold, realizing the automatic docking of the wax injection head and the mold gate.

[0016] 2. The driving push rod can move up and down. After the driving push rod moves upward, it will drive the piston to move upward, thereby sucking paraffin into the wax injection cylinder. After the driving push rod moves downward, it will drive the piston to move downward, thereby replacing manual work to inject the paraffin in the wax injection cylinder into the mold, realizing automatic wax injection. Moreover, the volume of the wax injection cylinder is constant, which can ensure that the volume of paraffin filled each time is the same, realizing quantitative wax injection and reducing the waste of paraffin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is a schematic diagram of the partial structure of the present utility model;

[0019] Figure 3 is a schematic diagram of the wax injection mechanism of the present utility model;

[0020] Figure 4 is a schematic diagram of the drive assembly of the present utility model.

[0021] In the figure: 1, equipment base; 2, conveyor belt; 3, first positioning frame; 4, second positioning frame; 5, wax injection mechanism; 501, wax injection cylinder; 502, piston; 503, drive push rod; 504, movable chamber; 505, wax inlet; 506, wax outlet; 507, check valve; 6, drive assembly; 601, drive cylinder; 602, lifting column; 603, positioning sleeve; 604, telescopic rod; 605, cross beam frame; 606, wax injection head; 607, spring; 608, limit cap. Specific embodiments

[0022] An embodiment of the present utility model provides a wax injection device.

[0023] Please refer to Figure 1 and Figure 2 , a wax injection device, including an equipment base 1, a conveyor belt 2 is arranged in the equipment base 1, a first positioning frame 3 is fixedly installed on the equipment base 1, a second positioning frame 4 is fixedly installed on the first positioning frame 3, a wax injection mechanism 5 is fixedly installed at the upper end of the first positioning frame 3, the wax injection mechanism 5 includes a wax injection cylinder 501 fixed on the first positioning frame 3, a piston 502 is movably installed in the wax injection cylinder 501, a wax inlet 505 and a wax outlet 506 are fixedly installed at the bottom of the wax injection cylinder 501, check valves 507 are arranged in both the wax inlet 505 and the wax outlet 506, a drive assembly 6 is connected to the second positioning frame 4, the conveyor belt 2 can drive the mold to move below the wax injection mechanism 5, the drive assembly 6 can drive the piston 502 on the wax injection mechanism 5 to move up and down, so as to realize automatic wax injection, and before wax injection, the cross beam frame 605 will drive the wax injection head 606 to move downward, so that the wax injection head 606 is inserted into the gate on the mold, realizing the automatic docking of the wax injection head 606 and the mold gate.

[0024] Please refer to again Figure 2 and Figure 3 , a wax injection mechanism 5 is fixedly installed at the upper end of the first positioning frame 3, the wax injection mechanism 5 includes a wax injection cylinder 501 fixed on the first positioning frame 3, a piston 502 is movably installed in the wax injection cylinder 501, a wax inlet 505 and a wax outlet 506 are fixedly installed at the bottom of the wax injection cylinder 501, check valves 507 are arranged in both the wax inlet 505 and the wax outlet 506, the wax injection mechanism 5 further includes a drive push rod 503 fixed on the piston 502, and a movable chamber 504 is opened at the upper end of the drive push rod 503.

[0025] Specifically, the one-way valve 507 can restrict the flow direction of the paraffin wax, and the driving push rod 503 can move up and down. After the driving push rod 503 moves upward, it will drive the piston 502 to move upward, thereby sucking the paraffin wax into the wax injection cylinder 501. After the driving push rod 503 moves downward, it will drive the piston 502 to move downward, thereby injecting the paraffin wax in the wax injection cylinder 501 into the mold instead of manual operation, realizing automatic wax injection. Moreover, the volume of the wax injection cylinder 501 is constant, which can ensure that the volume of the paraffin wax injected each time is the same, realizing quantitative wax injection.

[0026] Please refer to again Figure 2 and Figure 4 As shown in, a driving assembly 6 is connected to the second positioning frame 4. The driving assembly 6 includes a driving cylinder 601 fixed to the second positioning frame 4. A lifting column 602 is fixedly installed at the lower end of the driving cylinder 601. A cross beam frame 605 is fixedly installed at the upper end of the lifting column 602. A positioning sleeve 603 is provided on the cross beam frame 605. A spring 607 is provided inside the positioning sleeve 603. A telescopic rod 604 is movably installed on the positioning sleeve 603. A wax injection head 606 is fixedly installed at the lower end of the cross beam frame 605, and the wax injection head 606 is sleeved on the wax outlet 506. A limit cap 608 is provided at the lower end of the lifting column 602, and the lifting column 602 is restricted to move inside the movable chamber 504 through the limit cap 608.

[0027] Specifically, during the downward movement of the positioning sleeve 603, the spring 607 will be compressed. The driving cylinder 601 can drive the piston 502 to move up and down, thereby realizing wax injection. Moreover, the driving cylinder 601 can drive the lifting column 602 to move downward. After the lifting column 602 moves downward, it will drive the cross beam frame 605 to move downward. After the cross beam frame 605 moves downward, it will drive the wax injection head 606 to move downward, so that the wax injection head 606 is inserted into the gate on the mold, realizing the automatic docking of the wax injection head 606 and the mold gate.

[0028] Working principle: In actual use, first use the conveyor belt 2 to transport the mold into the first positioning frame 3, and align the wax outlet 506 with the gate on the mold. After the wax outlet 506 is aligned with the gate on the mold, the driving cylinder 601 can be started. After starting the driving cylinder 601, it will drive the lifting column 602 to move downward. After the lifting column 602 moves downward, it will drive the cross beam frame 605 to move downward. After the cross beam frame 605 moves downward, it will drive the wax injection head 606 to move downward, so that the wax injection head 606 is inserted into the gate on the mold. After the wax injection head 606 is inserted into the gate on the mold, the lifting column 602 can be controlled to continue moving downward. After the lifting column 602 continues to move downward, it will abut against the bottom of the movable chamber 504, thereby pushing the driving push rod 503 to move downward. After the driving push rod 503 moves downward, it will drive the piston 502 to move downward, so as to inject the paraffin in the wax injection cylinder 501 into the mold. After that, the driving cylinder 601 can be retracted. After retracting the driving cylinder 601, it will drive the driving push rod 503 and the cross beam frame 605 to move upward in sequence. After the driving push rod 503 moves upward, it will drive the piston 502 to move upward, so as to suck the paraffin into the wax injection cylinder 501. After the cross beam frame 605 moves upward, the wax injection head 606 will leave the gate on the mold. After the wax injection head 606 leaves the gate on the mold, the cast wax mold can be transported out by the conveyor belt 2 to realize the automatic casting of the wax mold.

[0029] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wax injection device, comprising an equipment base (1), wherein a conveyor belt (2) is arranged in the equipment base (1), a first positioning frame (3) is fixedly mounted on the equipment base (1), and a second positioning frame (4) is fixedly mounted on the first positioning frame (3), characterized in that: A wax injection mechanism (5) is fixedly mounted on the upper end of the first positioning frame (3), the wax injection mechanism (5) comprising a wax injection cylinder (501) fixed on the first positioning frame (3), a piston (502) being movably mounted in the wax injection cylinder (501), a wax inlet (505) and a wax outlet (506) being fixedly mounted on the bottom of the wax injection cylinder (501), both the wax inlet (505) and the wax outlet (506) being provided with a one-way valve (507), the second positioning frame (4) being connected to a driving assembly (6), the driving assembly (6) comprising a valve (507) fixed on the second positioning frame (4), and a valve (508) being mounted on the second positioning frame (4). A driving cylinder (601) on a positioning frame (4) is provided, a lifting column (602) is fixedly installed at the lower end of the driving cylinder (601), a beam frame (605) is fixedly installed at the upper end of the lifting column (602), a positioning sleeve (603) is provided on the beam frame (605), a spring (607) is provided in the positioning sleeve (603), a telescopic rod (604) is movably installed on the positioning sleeve (603), a wax injection head (606) is fixedly installed at the lower end of the beam frame (605), and the wax injection head (606) is sleeved on the wax outlet (506).

2. A wax injection device according to claim 1, characterized in that: The wax injection mechanism (5) further comprises a driving push rod (503) fixed on the piston (502), and an active chamber (504) is provided at the upper end of the driving push rod (503).

3. A wax injection device according to claim 2, characterized in that: A through hole is provided on the upper surface of the first positioning frame (3), and the wax inlet (505) and the wax outlet (506) both extend into the inner side of the first positioning frame (3) through the through hole.

4. A wax injection device according to claim 3, characterized in that: The wax injection cylinder (501) is installed above the conveyor belt (2) through a first positioning frame (3), and the lifting column (602) is movably installed at the upper end of the driving push rod (503) through a movable chamber (504). The one-way valve (507) in the wax inlet (505) only allows liquid to enter the wax injection cylinder (501) through the wax inlet (505), and the one-way valve (507) in the wax outlet (506) only allows liquid in the wax injection cylinder (501) to be discharged through the wax outlet (506).

5. A wax injection device according to claim 4, characterized in that: A limiting cap (608) is provided at the lower end of the lifting column (602), and the lifting column (602) is limited in movement within the movable chamber (504) by the limiting cap (608).

6. A wax injection device according to claim 5, characterized in that: The first positioning frame (3) is provided with a through hole.

7. A wax injection device according to claim 1, characterized in that: The driving cylinder (601) is installed above the first positioning frame (3) through the second positioning frame (4), one end of the spring (607) is connected to the upper end of the positioning sleeve (603), and the other end of the spring (607) is connected to the upper end of the telescopic rod (604), and the wax injection head (606) is movably installed at the wax outlet (506) through the crossbeam frame (605).

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