Sand filling device for power hardware casting sand mold

Abstract

The application relates to the technical field of sand casting, and particularly discloses a sand mold filling device for electric power fitting casting; the sand mold filling device comprises a sand mold conveying unit, a sand filling unit and a sand mold, the sand mold conveying unit comprises a transmission seat and a closed-loop transmission piece arranged in the transmission seat, a plurality of groups of positioning clamping bases for fixing the sand mold are uniformly arranged on the closed-loop transmission piece, side plates are fixed on the transmission seats located on the front and back sides of the closed-loop transmission piece, elastic pieces are arranged between the two side plates and guide clamping plates for clamping the sand mold are connected through the elastic pieces, a vibrating motor is arranged on each guide clamping plate, the sand filling unit comprises a sand storage bin and a sand discharging device, a discharging pipe at the lower end of the sand storage bin is rotationally connected with a material receiving pipe on the sand discharging device, and a sand filling pipe is arranged on the movable end of the sand discharging device and faces the sand mold; the sand mold filling device can realize uniform sand filling and conveying of the sand mold, manual moving of the sand filled sand mold is not needed, and the discharged sand can be effectively and uniformly filled into the whole sand mold.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sand casting, and discloses a sand mold filling device for electric power fitting casting. BACKGROUND

[0002] Sand mold casting is a common process for preparing irregular electric power fittings, and before casting, the stirred sand is filled into the sand mold to prepare a pouring cavity corresponding to the electric power fitting. The existing sand mold filling process is that an operator first moves the sand mold below the sand bin, then uses the sand unloading machine at the lower end of the bin to pour the sand in the sand mold, and then manually smoothes the sand in the sand mold.

[0003] For example, the utility model patent with the application number CN2018221889669 discloses a sand mold casting sand filling device, which comprises a sand box, a sand storage tank and a sand filling mechanism. A feeding port is arranged at the top of the sand storage tank, and a discharging port is arranged at the bottom of the sand storage tank. The sand filling mechanism comprises a pusher connected to the discharging port of the sand storage tank, an adjusting rod provided with a filling port on the pusher, and a discharging hose connected between the discharging end of the pusher and the filling port. The sand mold casting sand filling device not only needs to manually move the sand box when filling the sand mold, which causes the labor intensity of the operator to be too large, but also can only be point-falling into the sand box when the sand is discharged from the filling port, so that the sand in the sand box is piled up into a pile, which cannot uniformly and effectively fill the inner cavity of the sand box. Therefore, the operator needs to use a shovel to flatten the piled sand, which not only increases the labor of the operator, but also reduces the efficiency of sand filling of the sand box. Based on the above-mentioned deficiencies of the existing sand mold casting sand filling device, the present application provides a sand mold sand filling device for electric power fitting casting, which realizes the automatic conveying, uniform sand filling and automatic sand leveling of the sand mold for electric power fitting casting. SUMMARY

[0004] The application aims to provide a sand mold sand filling device for electric power fitting casting, which solves the problem that the existing sand mold casting sand filling device needs to manually move the sand mold during the sand filling process, and the sand is easily piled up due to point discharging, resulting in uneven sand filling of the sand mold.

[0005] The application is achieved by the following technical solutions:

[0006] A sand mold sand filling device for electric power fitting casting, comprising a sand mold conveying unit, a sand filling unit and a sand mold. The sand mold conveying unit comprises a transmission seat and a closed-loop transmission piece arranged in the transmission seat. A plurality of groups of positioning clamping seats for fixing the sand mold are uniformly arranged on the closed-loop transmission piece. Side plates are fixed on the transmission seats on the front and rear sides of the closed-loop transmission piece. Elastic members are connected between the two side plates and guide clamping plates for clamping the sand mold. Vibration motors are arranged on each guide clamping plate.

[0007] The sand filling unit comprises a sand storage bin and a sand discharging device, a discharging pipe at the lower end of the sand storage bin is rotatably connected to a receiving pipe of the sand discharging device, and a sand filling pipe is arranged on the movable end of the sand discharging device.

[0008] The sand filling device for the sand mold for casting electric power fittings disclosed in the present application only needs to place the empty sand molds in each set of positioning clamping seats on the closed-loop conveying member one by one, and then convey the sand molds to the two guide clamping plates through the closed-loop conveying member, so that the guide clamping plates clamp and fix the sand molds under the action of the elastic members.

[0009] Then, when the sand in the sand storage bin is loaded into the sand mold through the sand discharging device, the operator only needs to push the entire sand discharging device back and forth, so that the sand discharging device rotates around the discharging pipe, so that the sand discharged from the sand filling pipe can be uniformly loaded into the sand mold, and the sand will not accumulate in the sand mold due to fixed-point sand filling. At the same time, the vibration motor is started during the sand filling process, and the sand mold can also vibrate at a high frequency under the high-frequency vibration of the vibration motor, so that the sand loaded into the sand mold is automatically leveled, and the sand can uniformly fill the entire sand mold.

[0010] As a specific arrangement of the above scheme, the closed-loop conveying member in the conveying seat is provided with two, and the two closed-loop conveying members are arranged in parallel in front of and behind the conveying seat. Each positioning clamping seat is connected to the closed-loop conveying member through an elastic connecting body.

[0011] As a further arrangement of the above scheme, the two guide clamping plates are arranged in mirror image symmetry in front of and behind each other, and one end of the two guide clamping plates is arranged in an eight-shaped open manner.

[0012] As a further arrangement of the above scheme, each guide clamping plate is connected to a guide sliding rod, and a guide through hole for passing through the guide sliding rod is formed in the side plate.

[0013] As a further arrangement of the above scheme, the end of the conveying seat is provided with a roller conveying seat, a transmission roller is rotatably connected in the roller conveying seat, and a pushing device for pushing the sand mold into the roller conveying seat is further arranged on the conveying seat.

[0014] As a specific arrangement of the above scheme, the sand discharging device comprises a conveying cylinder, a feeding auger blade is arranged in the conveying cylinder, and an unloading motor is connected to the end of the feeding auger blade. The receiving pipe is arranged on the upper surface of one end of the conveying cylinder, and the sand filling pipe is arranged on the lower surface of the other end of the conveying cylinder.

[0015] As a specific arrangement of the above scheme, the lower end of the discharging pipe is connected to a pipe connecting body, and a bearing connected to the receiving pipe is arranged in the pipe connecting body.

[0016] As a further arrangement of the above-mentioned scheme, the lower end of the sand storage bin is fixedly connected with a circular arc strip, an arc-shaped strip opening is formed in the circular arc strip, a positioning rod is connected to the conveying cylinder and passes through the arc-shaped strip opening, and a roller is rotatably connected to the upper end of the positioning rod and rolls along the surface of the circular arc strip.

[0017] As a further arrangement of the above-mentioned scheme, the side surface of the conveying cylinder is further provided with an operating handle.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The sand filling device for the power hardware casting sand mold disclosed in the present application only needs to place the empty sand mold on the sand mold conveying unit, and then uniformly fills and conveys the sand mold under the action of the sand mold conveying unit, without manually moving the sand-filled sand mold, thereby effectively reducing the labor intensity of the operator.

[0020] The sand filling device for the power hardware casting sand mold changes the fixed-point discharging mode of the traditional sand filling device, rotatably connects the discharging device with the lower end of the sand storage bin, and makes the discharging device rotate around the discharging pipe by pushing it during the discharging process, so that the discharging pipe swings back and forth above the sand mold, thereby preventing the discharged sand from accumulating and effectively filling the entire sand mold with the discharged sand.

[0021] The sand filling device for the power hardware casting sand mold further improves the sand mold conveying unit, connects the guide clamping plates to the side plates through elastic members, clamps the sand mold in the two guide clamping plates during the sand mold conveying process, vibrates the sand mold in the positioning clamp by the vibration motor on the clamping plate during the sand filling process, and uniformly fills the sand mold with the discharged sand by the vibration of the sand mold itself, thereby effectively improving the sand filling effect of the sand mold. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a first angle three-dimensional structure schematic view of the present application.

[0024] Figure 2 It is a second angle three-dimensional structure schematic view of the present application.

[0025] Figure 3 Fig. 1 is a schematic view of the three-dimensional structure of the sand mold conveying unit in the present application;

[0026] Figure 4 Fig. 2 is a schematic view of the three-dimensional structure of the transmission chain, sand mold positioning clamping seat, etc. in the present application;

[0027] Figure 5 Fig. 3 is a schematic view of the three-dimensional structure of the sand filling unit in the present application;

[0028] Figure 6 Fig. 4 is a schematic view of the internal planar structure of the sand filling unit in the present application;

[0029] Figure 7 Fig. 5 is a schematic view of the enlarged structure at A in the present application. Figure 3 Fig. 6 is a schematic view of the enlarged structure at B in the present application. DETAILED DESCRIPTION

[0030] In order to make the personnel in the technical field better understand the present application, the technical solutions in the present application will be described clearly and completely below by combining the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the field without creative labor should belong to the scope of protection of the present application.

[0031] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Figures 1-7

[0032] Embodiment 1

[0033] Embodiment 1 discloses a sand mold sand filling device for power hardware casting, referring to Figs. 1-6 and Figs. 7-8, the main body of the sand mold sand filling device is composed of a sand mold conveying unit 100, a sand filling unit 200 and a sand mold 300, the sand mold 300 is placed on the sand mold conveying unit 100 to be automatically conveyed, and then conveyed to the work station of the sand filling unit 200 to perform sand filling operation. Figure 1 Figure 2 The sand mold conveying unit 100 includes a transversely arranged transmission seat 1, the upper end of the transmission seat 1 is provided with a transmission groove, two transmission chains 2 parallel to each other are arranged in the transmission groove, the transmission chains 2 can also be replaced by a transmission belt, and a power device 3 for driving the two transmission chains 2 to rotate synchronously is arranged at one end of the transmission seat 1.

[0034] The sand filling unit 200 includes a sand filling seat 2, the sand filling seat 2 is provided with a sand filling groove 3, and a sand filling mechanism 4 is arranged in the sand filling groove 3. Figure 3 Figure 4 The sand filling mechanism 4 includes a sand filling mechanism 4, the sand filling mechanism 4 is provided with a sand filling mechanism 4, and a sand filling mechanism 4 is arranged in the sand filling groove 3.

[0035] ​​​A plurality of groups of sand mold positioning clamps 4 are connected at equal intervals on the outer surfaces of the two conveying chains 2, and through each group of sand mold positioning clamps 4, a sand mold 300 can be fixed therein and then conveyed along with the conveying chains 2. In addition, a roller conveying seat 5 is connected at one end of the conveying seat 1, the roller conveying seat 5 is arranged perpendicularly to the conveying seat 1, and a row of conveying rollers 6 is rotatably connected in the roller conveying seat 5. A pushing cylinder 7 is also fixedly arranged on the conveying seat 1 opposite the roller conveying seat 5, and the pushing cylinder 7 can also be replaced by other telescopic pushing members such as a hydraulic cylinder or an electric push rod, and a pushing plate 8 aligned with the front and back of the roller conveying seat 5 is connected at the end of the piston rod of the pushing cylinder 7.

[0036] After sand filling is completed, the sand mold 300 is moved by the conveying chains 2 to between the roller conveying seat 5 and the pushing cylinder 7, and then the pushing cylinder 7 is started to extend the piston rod, so that the sand mold 300 in the group of sand mold positioning clamps 4 can be pushed to the conveying rollers 6 of the roller conveying seat 5 under the action of the pushing plate 8, and then the sand mold 300 can be sent to the next station under the action of the conveying rollers 6.

[0037] Reference is made to the accompanying drawings Figure 5 and the accompanying drawings Figure 6 The sand filling unit 200 includes a sand storage bin 9 and a sand discharging device 10, the sand storage bin 9 is fixed above the sand mold conveying unit 100 by a support frame (not shown in the figure), a feeding pipe 11 is arranged at the upper end of the sand storage bin 9, and a discharging pipe 12 is connected at the lower end. The sand discharging device 10 includes a horizontally arranged conveying cylinder 101, a feeding auger blade 102 is rotatably arranged in the conveying cylinder 101, a sand discharging motor 103 connected with the feeding auger blade 102 is arranged at the end of the conveying cylinder 101, the feeding auger blade 102 can be rotated in the conveying cylinder 101 by the action of the sand discharging motor 103, and then the sand is directionally and quantitatively conveyed during the rotation of the feeding auger 102. A receiving pipe 104 is arranged on the upper surface of one end of the conveying cylinder 101, and a sand filling pipe 105 is arranged on the lower surface of the other end of the conveying cylinder 101. At the same time, a pipe connecting body 121 is arranged at the lower end of the discharging pipe 12, and a bearing 122 connected with the receiving pipe 104 is arranged in the pipe connecting body 121, so that the entire sand discharging device 10 can rotate around the bearing 122 during sand discharging, and the sand discharged from the sand filling pipe 105 can be uniformly filled into the sand mold 300, and the sand will not accumulate in the sand mold due to fixed-point discharging.

[0038] In addition, a driving motor 13 is arranged at the center of the upper surface of the sand storage bin 9, the output shaft of the driving motor 13 is connected with a rotating rod 14 extending into the sand storage bin 9, and a discharging auger blade 15 extending into the discharging pipe 12 is connected to the lower end of the rotating rod 14, and then a plurality of material scraping plates 16 are connected to the rotating rod 14, so that the speed of the sand discharge is controlled by the discharging auger blade 15 under the action of the driving motor 13, and the sand adhered to the inner wall of the sand storage bin 9 is scraped by the material scraping plates 16 to prevent the occurrence of material sticking.

[0039] Finally, a connecting strip 17 is welded to the lower end of the sand storage bin 9, and a circular arc strip 18 is connected to the end of the connecting strip 17, an arc-shaped strip opening with the discharging pipe 12 as the center is formed on the circular arc strip 18, a positioning rod 19 vertically penetrating the arc-shaped strip opening is connected to the conveying cylinder 101, a roller 20 is rotatably connected to the upper end of the positioning rod 19, and the roller 20 abuts against the upper surface of the circular arc strip 18, and then an operation handle 21 is welded to the side surface of the conveying cylinder 101.

[0040] During the sand discharging process of the sand discharging device 10, the operator holds the operation handle 21 to rotate and push the sand filling pipe 105 to the directly above the sand mold 300, and then simultaneously starts the sand discharging motor 103 and the driving motor 13 to convey and discharge the sand in the sand storage bin 9, and the operator pushes the entire sand discharging device 10 back and forth by holding the operation handle 21 during the discharging process, so that the sand discharged from the sand filling pipe 105 can be uniformly filled in the sand mold 300 without accumulation.

[0041] Embodiment 2

[0042] Embodiment 2 discloses a sand filling device for a sand mold for electric power fittings casting, which is improved based on embodiment 1, and the same parts as those of embodiment 1 will not be described again, and the different parts are described with reference to the accompanying drawings of Figure 3 , the accompanying drawings of Figure 4 , and the accompanying drawings of Figure 7 .

[0043] In this embodiment 2, side plates 22 are fixed to the front and rear ends of the transmission seat 1 at the sand filling station, guide clamping plates 23 are connected to the opposite side surfaces of the two side plates 22 through springs 24, the two guide clamping plates 23 are arranged in front and rear mirror image symmetry, and one end of each guide clamping plate 23 is arranged in an eight-character shape, so that the sand mold 300 transported with the transmission chain 2 can enter between the two guide clamping plates 23. At the same time, a guide through hole is formed in each side plate 22, a guide sliding rod 25 is connected to each guide clamping plate 23 and penetrates through the corresponding guide through hole, and a vibration motor 26 is fixedly installed on the outer side surface of each guide clamping plate 23, and the vibration motor 26 can be one or more according to the size of the guide clamping plate 23.

[0044] In addition, the lower end of each sand mold positioning holder 4 is connected with an elastic connecting body 401, which can be made of polyurethane damping material. The sand mold positioning holder 4 is connected with the conveying chain 2 through the elastic connecting body 401, so that each group of sand mold positioning holder 4 has a certain vibration swing space after fixing the sand mold 300.

[0045] When the sand mold filling device disclosed in the embodiment 2 is in operation, the sand mold 300 fixed in the sand mold positioning holder 4 enters between the two guide clamps 23 under the conveying action of the conveying chain 2, and the two guide clamps 23 can effectively clamp the whole sand mold 300 due to the action force of the spring 24. Then, during the uniform sand filling process of the sand unloading device 10, the vibration motor 26 is started synchronously, so that the sand mold 300 in the sand filling process can vibrate at a high frequency between the sand mold positioning holders 4 under the action of the vibration motor 26, thereby making the molding sand filled in the sand mold can be uniformly filled in every corner in the sand mold 300, and the self-uniform effect of the molding sand filling is further improved.

[0046] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sand filling device for a sand mold for casting a power fitting, comprising a sand mold conveying unit, a sand filling unit, and a sand mold, characterized in that, The sand mold conveying unit comprises a transmission seat and a closed-loop transmission piece arranged in the transmission seat, a plurality of groups of positioning clamping bases for fixing the sand mold are uniformly arranged on the closed-loop transmission piece, side plates are fixed on the transmission seat at the front and rear sides of the closed-loop transmission piece, a guide clamping plate for clamping the sand mold is connected between the two side plates through an elastic piece, and a vibration motor is arranged on each guide clamping plate; The closed-loop transmission pieces in the transmission seat are arranged in two, the two closed-loop transmission pieces are arranged in parallel in the transmission seat, each positioning clamping base is connected with the closed-loop transmission piece through an elastic connecting body, the end of the transmission seat is provided with a roller conveying seat, a transmission roller is rotatably connected in the roller conveying seat, and a pushing device for pushing the sand mold into the roller conveying seat is further arranged on the transmission seat; The sand filling unit comprises a sand storage bin and a sand discharging device, a discharging pipe at the lower end of the sand storage bin is rotatably connected with a receiving pipe on the sand discharging device, and a sand filling pipe is arranged on the movable end of the sand discharging device and faces the sand mold; The sand discharging device comprises a conveying cylinder, a feeding auger blade is arranged in the conveying cylinder, an end of the feeding auger blade is connected with a sand discharging motor, the receiving pipe is arranged on the upper surface of one end of the conveying cylinder, and the sand filling pipe is arranged on the lower surface of the other end of the conveying cylinder; A pipe connecting body is connected to the lower end of the discharging pipe, and a bearing connected with the receiving pipe is arranged in the pipe connecting body; The lower end of the sand storage bin is fixedly connected with a circular arc strip, an arc-shaped strip opening is formed in the circular arc strip, a positioning rod is arranged on the conveying cylinder and passes through the arc-shaped strip opening, and a roller rotatably connected to the upper end of the positioning rod rolls along the surface of the circular arc strip.

2. The sand filling device for power fitting casting sand mold according to claim 1, characterized by, The two guide clamping plates are arranged in mirror image symmetry and are arranged in an eight-shaped open manner at one end.

3. The electric power fitting casting sand mold sand filling device according to claim 2, characterized by, Each guide clamping plate is connected with a guide sliding rod, and a guide through hole for the guide sliding rod is formed in the side plate.

4. The sand filling device for power fitting casting sand mold according to claim 1, characterized by, An operation handle is further arranged on the side surface of the conveying cylinder.

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