Heat treatment equipment for sand mold casting parts

Abstract

A heating box is arranged on the upper surface of a bottom plate, the end, extending close to the bottom plate, of the heating box is open, L-shaped limiting guide plates are arranged on the two sides of the heating box, and the two sides of a lifting door plate are in sliding fit with the L-shaped limiting guide plates; a gear motor is arranged on the upper surface of the lifting door plate, a rack is arranged on the outer side surface of the lifting door plate to be meshed with a gear of an output shaft of the gear motor, positioning grooves are formed in the two sides of the bottom of the lifting door plate, and the positioning grooves correspond to the guide rails in a one-to-one mode and are matched with the guide rails. The bottom of the lifting door plate is provided with the positioning groove to be matched with the guide rail, so that it is guaranteed that after the lifting door plate is closed, no large gap is formed in the matching position of the positioning groove of the lifting door plate and the guide rail, excessive discharge of heat in the heating box is avoided, the energy-saving purpose is achieved, and meanwhile the heat treatment effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment equipment, in particular to a heat treatment equipment for sand-castings. Background Technique

[0002] Sand casting refers to a casting method in which castings are produced in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Since the molding materials used in sand casting are cheap and easy to obtain, and the mold manufacturing is simple, it can adapt to single-piece production, batch production and mass production of castings. For a long time, it has been the basic process in casting production.

[0003] After the processing of some sand-castings is completed, heat treatment is required. Most of the current heat treatment equipment uses side-opening doors, which are generally opened and closed manually, lacking convenience. And when guide rails are installed at the bottom, the guide rails are generally installed in a sunken manner, and the door cannot block the sunken part of the guide rails, and the hot air inside the heating box is easy to leak out from the sunk grooves of the guide rails. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heat treatment equipment for sand-castings. Two guide rails are arranged on the upper surface of the bottom plate. The heating box uses a reduction motor to realize the lifting of the lifting door panel, eliminating the need for manual closing and greatly improving convenience. And a positioning groove is opened at the bottom of the lifting door panel to cooperate with the guide rails, so as to ensure that there will be no large gap at the cooperation part of the positioning groove of the lifting door panel and the guide rails after the lifting door panel is closed, avoiding excessive discharge of the heat in the heating box, thus achieving the purpose of energy saving and ensuring the heat treatment effect at the same time, so as to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A heat treatment device for sand-castings, comprising a bottom plate, a heating box, L-shaped limiting guide plates, guide rails, side rods, a cross plate, a reduction motor, a gear, a lifting door panel, a rack and a trolley support plate. The upper surface of the bottom plate is provided with a heating box. One end of the bottom plate extends to the outer end of the heating box. The end of the heating box close to the extended end of the bottom plate is open and provided with L-shaped limiting guide plates on both sides. The upper surface of the bottom plate is provided with two guide rails. One end of the guide rails extends into the heating box. The upper surface outside the guide rails is provided with limiting convex plates. The heating box is provided with side rods on both sides at the open end. The side rods are connected to both ends of the cross plate. The upper surface of the cross plate is provided with a reduction motor. The output shaft of the reduction motor is provided with a gear. The two sides of the lifting door panel are slidably matched with the L-shaped limiting guide plates. The outer surface of the lifting door panel is provided with a rack. The gear is meshed with the rack. Positioning grooves are opened on both sides of the bottom of the lifting door panel. The positioning grooves correspond to the guide rails one by one. The shapes and sizes of the cross sections of the positioning grooves and the guide rails are matched. The two sides of the bottom of the trolley support plate are matched with the guide rails through wheels.

[0006] Preferably, in a heat treatment device for sand-castings provided by the present utility model, support rods are provided on both sides at the open end of the heating box through bolts, and the top ends of the support rods support the lower surface of the side rods.

[0007] Preferably, in a heat treatment device for sand-castings provided by the present utility model, the upper surface of the side rod is also connected to the end of a reinforcing cross bar, and the reinforcing cross bar is connected to the top end of the heating box through bolts.

[0008] Preferably, in a heat treatment device for sand-castings provided by the present utility model, electric heating tubes are provided on the inner walls of both sides and the inner end of the heating box.

[0009] Preferably, in a heat treatment device for sand-castings provided by the present utility model, a handle is provided at the outer end of the trolley support plate.

[0010] Preferably, in a heat treatment device for sand-castings provided by the present utility model, a temperature sensor is installed at the top end inside the heating box.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Two guide rails are provided on the upper surface of the bottom plate. The heating box uses a reduction motor to realize the lifting of the lifting door panel, which does not require manual closing, greatly improving the convenience. Moreover, positioning grooves are opened at the bottom of the lifting door panel to cooperate with the guide rails, so as to ensure that there will be no large gap at the cooperation position of the positioning grooves of the lifting door panel and the guide rails after the lifting door panel is closed, avoiding excessive discharge of heat in the heating box, thus achieving the purpose of energy saving and ensuring the heat treatment effect at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic side view structure diagram of the present utility model;

[0014] Figure 2 This is a schematic front view structure diagram of the present utility model;

[0015] Figure 3 This is a schematic top view structure diagram of the present utility model.

[0016] In the figure: bottom plate 1, heating box 2, L-shaped limiting guide plate 3, guide rail 4, side rod 5, cross plate 6, reduction motor 7, gear 8, lifting door panel 9, rack 10, trolley support plate 11, limiting convex plate 12, positioning groove 13, support rod 14, strengthening cross bar 15, electric heating tube 16, handle 17, temperature sensor 18. SPECIFIC EMBODIMENTS

[0017] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model;

[0018] It should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "above", "below", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0019] Please refer to Figures 1-3, the present utility model provides a technical solution: a heat treatment device for sand-castings, including a bottom plate 1, a heating box 2, an L-shaped limiting guide plate 3, a guide rail 4, a side rod 5, a cross plate 6, a reduction motor 7, a gear 8, a lifting door panel 9, a rack 10 and a trolley support plate 11. An upper surface of the bottom plate 1 is provided with the heating box 2. Electric heating tubes 16 are arranged on inner walls on both sides and at the inner end of the heating box 2 to realize heating inside the heating box 2. One end of the bottom plate 1 extends to the outer end of the heating box 2. The heating box 2 is open at the end close to the extended end of the bottom plate 1 and is provided with the L-shaped limiting guide plates 3 on both sides. Two guide rails 4 are arranged on the upper surface of the bottom plate 1. One end of each guide rail 4 extends into the heating box 2. A limiting convex plate 12 is arranged on the upper surface outside the guide rail 4. With this structure of the guide rail 4, on the one hand, it prevents the trolley support plate 11 from derailing, and on the other hand, it can cooperate with the positioning grooves 13 opened on the lifting door panel 9. Side rods 5 are arranged on both sides at the open end of the heating box 2. The side rods 5 are connected to both ends of the cross plate 6. A reduction motor 7 is arranged on the upper surface of the cross plate 6. Support rods 14 are arranged on both sides at the open end of the heating box 2 through bolts. Tops of the support rods 14 support the lower surface of the side rods 5. The side rods 5 are supported by the support rods 14 to ensure the stability and connection strength of the side rods 5 and the cross plate 6. The upper surface of the side rods 5 is also connected to the end of a reinforcing cross bar 15. The reinforcing cross bar 15 is connected to the top of the heating box 2 through bolts. Through the arrangement of the reinforcing cross bar 15, the stability and connection strength of the side rods 5 and the cross plate 6 are further improved, thereby ensuring the stability of the reduction motor 7. An output shaft of the reduction motor 7 is provided with the gear 8. Both sides of the lifting door panel 9 are slidably matched with the L-shaped limiting guide plates 3. A rack 10 is arranged on an outer surface of the lifting door panel 9. The gear 8 meshes with the rack 10. Positioning grooves 13 are opened on both sides at the bottom of the lifting door panel 9. The positioning grooves 13 correspond to the guide rails 4 one by one, and the shapes and sizes of cross sections of the positioning grooves 13 and the guide rails 4 match each other. Both sides at the bottom of the trolley support plate 11 are matched with the guide rails 4 through wheels. A handle 17 is arranged at the outer end of the trolley support plate 11 to facilitate pushing and pulling of the trolley support plate 11. A temperature sensor 18 is installed at the top inside the heating box 2 to realize detection of the temperature inside the heating box 2.

[0020] Installation method and operating principle: Weld side rods 5 to both ends of the cross plate 6 respectively, then install the side rods 5 on both sides of the heating box 2 through bolts. Subsequently, install the reinforcing cross bar 15 on the upper surface of the heating box 2, and connect both ends to the top of the side rods 5 to ensure the connection strength of the side rods 5. Slide the lifting door panel 9 into the L-shaped limiting guide plate 3 on both sides by means of hoisting. Then install the reduction motor 7 at the corresponding position on the upper surface of the cross plate 6, and make the gear 8 installed on the output shaft of the reduction motor 7 mesh with the rack 10 on the surface of the lifting door panel 9. A positioning groove 13 is opened at the bottom of the lifting door panel 9 to cooperate with the guide rail 4. During use, the trolley support plate 11 is matched with the guide rail 4 through wheels. The workpiece formed after sand casting is hoisted onto the trolley support plate 11 by a crane. Subsequently, the trolley is pushed into the heating box 2 along the guide rail 4. Then start the reduction motor 7, and the reduction motor 7 drives the gear 8 to rotate. The gear 8 cooperates with the rack 10, thereby driving the lifting door panel 9 to descend. When the lifting door panel 9 is completely closed, the guide rail 4 cooperates with the positioning groove 13 of the lifting door panel 9. Subsequently, the inside of the heating box 2 is heated by the electric heating tube 16, thereby realizing the heat treatment of the sand casting. After the heat treatment is completed, the reduction motor 7 rotates in reverse, the lifting door panel 9 rises, the trolley support plate 11 is pulled out of the heating box 2, the sand casting is lifted off by a crane, and natural cooling is carried out. The structure of the utility model is reasonable. Two guide rails 4 are arranged on the upper surface of the bottom plate 1. The heating box 2 uses a reduction motor 7 to realize the lifting of the lifting door panel 9, without manual closing, greatly improving the convenience. And a positioning groove 13 is opened at the bottom of the lifting door panel 9 to cooperate with the guide rail 4, so as to ensure that there will be no large gap at the cooperation position of the positioning groove 13 of the lifting door panel 9 and the guide rail 4 after the lifting door panel 9 is closed, avoiding excessive discharge of heat in the heating box 2, thereby achieving the purpose of energy saving and ensuring the heat treatment effect.

[0021] For those parts not detailed in the present utility model, they are all well-known technologies to those skilled in the art.

[0022] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A heat treatment device for sand-castings, characterized in that: It includes a bottom plate (1), a heating box (2), an L-shaped limiting guide plate (3), guide rails (4), side rods (5), a cross plate (6), a reduction motor (7), a gear (8), a lifting door panel (9), a rack (10) and a trolley support plate (11). On the upper surface of the bottom plate (1), there is a heating box (2). One end of the bottom plate (1) extends to the outer end of the heating box (2). The end of the heating box (2) close to the extended end of the bottom plate (1) is open and there are L-shaped limiting guide plates (3) arranged on both sides. On the upper surface of the bottom plate (1), there are two guide rails (4). One end of the guide rails (4) extends into the heating box (2). On the upper surface outside the guide rails (4), there is a limiting convex plate (12). On both sides of the open end of the heating box (2), there are side rods (5). The side rods (5) are connected to both ends of the cross plate (6). On the upper surface of the cross plate (6), there is a reduction motor (7). The output shaft of the reduction motor (7) is provided with a gear (8). The two sides of the lifting door panel (9) are slidably matched with the L-shaped limiting guide plates (3). On the outer surface of the lifting door panel (9), there is a rack (10). The gear (8) meshes with the rack (10). On both sides of the bottom of the lifting door panel (9), there are positioning grooves (13). The positioning grooves (13) correspond to the guide rails (4) one by one. The shape and size of the cross section of the positioning grooves (13) match those of the guide rails (4). The two sides of the bottom of the trolley support plate (11) are matched with the guide rails (4) through wheels.

2. The heat treatment equipment for a sand casting part according to claim 1, characterized in that: On both sides of the open end of the heating box (2), there are support rods (14) arranged through bolts. The top ends of the support rods (14) support the lower surface of the side rods (5).

3. The heat treatment equipment for a sand casting part according to claim 1, characterized in that: The upper surface of the side rods (5) is also connected to the end of a strengthening cross bar (15). The strengthening cross bar (15) is connected to the top end of the heating box (2) through bolts.

4. The heat treatment equipment for a sand casting part according to claim 1, characterized in that: On the inner walls of both sides and the inner end of the heating box (2), there are electric heating tubes (16) arranged.

5. The heat treatment equipment for sand casting parts according to claim 1, characterized in that: On the outer end of the trolley support plate (11), there is a handle (17).

6. The heat treatment equipment for a sand casting according to claim 1, characterized in that: Inside the top end of the heating box (2), there is a temperature sensor (18) installed.

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