Vibration pendulum type sand screening machine

Abstract

The utility model relates to the technical field of molding sand screening equipment, in particular to a vibration pendulum type sand screening machine. A left-right reciprocating mechanism is installed on the base, a vibration exciter is installed at the transmission end of the left-right reciprocating mechanism, the transmission end of the vibration exciter abuts against a vibration disc, the vibration disc is vibrated up and down by driving the vibration exciter, and the sand screening cylinder is placed and locked on the vibration disc. The left-right reciprocating mechanism comprises a driving motor, a gear, a moving frame, a transmission plate and a guide rod; the driving motor is installed on the top of the base, the double-shaft output end of the driving motor is provided with the gear, and the gear is in meshing transmission with meshing teeth on the inner wall of the movable frame. The utility model aims at providing a vibration swing type sand screening machine to solve the problems that the vibration swing amplitude is too small and the screening effect is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of molding sand screening equipment, in particular to a vibrating sand screening machine for casting molding sand. Background Art

[0002] Molding sand is a material used for molding in casting. Molding sand is generally made of raw sand for casting, molding sand binder, additives and other molding materials mixed in a certain proportion. Molding sand can be divided into clay sand, water glass sand, cement sand, resin sand, etc. according to the different binders used. Clay sand, water glass sand and resin sand are the most used. The role of molding sand in casting production is extremely important. The casting waste caused by the poor quality of molding sand accounts for about 30-50% of the total casting waste. For example, the vibrating sand screening machine for casting molding sand with the publication number of the comparative document CN213134942U, although the technical solution of the above patent can be used to screen the sand screening cylinder, its screening method only vibrates the sand screening cylinder up and down, resulting in a small vibration amplitude, which cannot drive the molding sand in the sand screening cylinder to shake fully, thereby affecting the screening effect.

[0003] Therefore, in view of the above technical defects, it is urgent to develop a vibrating sand screening machine to solve the above screening effect problem. Utility Model Content

[0004] The utility model aims to provide a vibration-swing sand screening machine to solve the above-mentioned problems of too small vibration amplitude and poor screening effect.

[0005] In order to solve the above technical problems, the utility model provides a vibrating sand screening machine, including a base and a sand screening cylinder, a left and right reciprocating mechanism is installed on the base, a vibrator is installed on the transmission end of the left and right reciprocating mechanism, the transmission end of the vibrator is abutted against a vibration plate, and the vibration plate is vibrated up and down by driving the vibrator, and the sand screening cylinder is placed and locked on the vibration plate.

[0006] Preferably, the left-right reciprocating mechanism includes: a driving motor, a gear, a moving frame, a transmission plate and a guide rod; the driving motor is installed on the top of the base, the double-axis output end of the driving motor is provided with the gear, the gear is meshed with the meshing teeth on the inner wall of the moving frame for transmission, the top of the moving frame is provided with the transmission plate, the left and right ends of the transmission plate are symmetrically provided with the guide rods, and the guide rods are slidably plugged into the guide holes on the side plates of the base.

[0007] Preferably, it also includes a spring and a movable shaft. The movable shaft is symmetrically arranged at the four corners of the bottom of the vibration plate. The lower end of the movable shaft is slidably plugged into the positioning hole on the transmission plate, and the movable shaft also includes the spring sleeved thereon. The upper and lower ends of the spring are respectively connected to the vibration plate and the transmission plate.

[0008] Preferably, the circumference of the gear is a gear with incomplete meshing teeth, and the upper and lower inner walls of the moving frame are provided with meshing teeth that mesh with the gear for transmission.

[0009] Preferably, the top of the vibration plate further includes a placement groove, and the front side wall of the placement groove further includes a locking screw.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model drives the sand screening drum to perform left and right reciprocating motion through the left and right reciprocating mechanism, so as to shake and screen the molding sand in the sand screening drum left and right, and drives the sand screening drum to perform up and down reciprocating vibration through the above-mentioned vibrator, so as to shake and screen the molding sand in the sand screening drum up and down, thereby realizing continuous shaking and screening in the left and right and up and down directions, greatly improving the shaking amplitude and improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a front view structural diagram of a vibrating and swinging sand screening machine provided by the utility model.

[0013] Figure 2 The utility model provides a front view structural diagram of a vibrating sand screening machine with the sand screening cylinder removed.

[0014] Figure 3 The utility model provides a kind of vibrating sand screening machine, the bottom view structure diagram of which the sand screening cylinder is removed.

[0015] Figure 4 A partial structural diagram of the left and right reciprocating mechanism of a vibrating-swinging sand screening machine provided by the utility model.

[0016] In the figure: 1-base, 11-fixed ear plate, 2-sand screening cylinder, 3-left and right reciprocating mechanism, 31-drive motor, 32-gear, 33-moving frame, 34-transmission plate, 35-guide rod, 4-vibrator, 41-spring, 42-moving shaft, 5-vibration plate, 51-placement slot, 52-locking screw. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0018] like Figure 1-4As shown, the embodiment of the utility model specifically provides a vibration-swing sand screening machine, including a base 1 and a sand screening cylinder 2, a left-right reciprocating mechanism 3 is installed on the base 1, and a vibrator 4 is installed at the transmission end of the left-right reciprocating mechanism 3, where the vibrator 4 may include a driver and an eccentric vibrating disk, and the motor is used as a driver to drive the eccentric vibrating disk to generate a rotational motion, and the transmission end of the vibrator 4 abuts against a vibrating disk 5, and the vibrating disk 5 is vibrated up and down by driving the vibrator 4, and the sand screening cylinder 2 is placed and locked on the vibrating disk 5. When the above-mentioned sand screening machine is used, the left-right reciprocating mechanism 3 and the vibrator 4 can be synchronously controlled to work, that is, the left-right reciprocating mechanism 3 drives the sand screening cylinder 2 to reciprocate left and right, so as to shake and screen the molding sand in the sand screening cylinder 2 left and right, and the vibrator 4 drives the sand screening cylinder 2 to reciprocate up and down to shake and screen the molding sand in the sand screening cylinder 2 up and down, thereby realizing continuous vibration and screening in the left and right and up and down directions, greatly improving the vibration amplitude and screening effect.

[0019] The left-right reciprocating mechanism 3 includes: a driving motor 31, a gear 32, a moving frame 33, a transmission plate 34 and a guide rod 35; the driving motor 31 is installed on the top of the base 1, and the double-axis output end of the driving motor 31 is provided with a gear 32, and the gear 32 is meshed with the meshing teeth on the inner wall of the moving frame 33 for transmission, and the top of the moving frame 33 is provided with a transmission plate 34, and the left and right ends of the transmission plate 34 are symmetrically provided with guide rods 35, and the guide rods 35 are slidably plugged with the guide holes on the side plates of the base 1. When the above-mentioned left-right reciprocating mechanism 3 is working, the driving motor 31 can be controlled to drive the gear 32 to rotate, so as to drive the moving frame 33 to reciprocate left and right under the guidance of the guide rod 35, that is, to drive the transmission plate 34 to reciprocate left and right.

[0020] It also includes springs 41 and moving shafts 42. The moving shafts 42 are symmetrically arranged at the four corners of the bottom of the vibration plate 5. The lower ends of the moving shafts 42 are slidably plugged into the positioning holes on the transmission plate 34. The moving shafts 42 also include sleeved springs 41. The upper and lower ends of the springs 41 are respectively connected to the vibration plate 5 and the transmission plate 34. The arrangement of the springs 41 and the moving shafts 42 can provide a guide and elastic return force for the up and down movement when the exciter 4 vibrates the vibration plate 5 up and down, so that the vibration plate 5 can quickly return to the top.

[0021] The circumference of the gear 32 is a gear with incomplete meshing teeth, and the upper and lower inner walls of the moving frame 33 are provided with meshing teeth that mesh with the gear 32 for transmission.

[0022] The top of the vibration plate 5 also includes a placement groove 51, and the front side wall of the placement groove 51 also includes a locking screw 52 to strengthen the stability of the sand screening tube 2 when it is placed for screening. At the same time, the sand screening tube 2 can be composed of multiple layers of screening plates, and the screening holes opened on the screening surfaces of the multiple screening plates have different apertures, and the aperture size can be reduced layer by layer from top to bottom. Furthermore, the multiple screening plates are connected in a detachable structure, which can be locked and fastened by means of a locking groove and a locking buckle. The specific method of the detachable connection structure will not be described in detail here, as long as the above functions are achieved.

[0023] In order to further improve the stability of the vibrating sand screening machine during screening, fixed ear plates 11 can be symmetrically provided at the front and rear ends of the base 1, and the device can be installed and fixed on a mounting platform, such as on the ground, through the fixed ear plates 11.

[0024] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation to the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A vibrating sand screening machine, comprising a base (1) and a sand screening cylinder (2), characterized in that: A left-right reciprocating mechanism (3) is installed on the base (1), a vibration exciter (4) is installed on the transmission end of the left-right reciprocating mechanism (3), the transmission end of the vibration exciter (4) is in contact with a vibration plate (5), and the vibration plate (5) is vibrated up and down by driving the vibration exciter (4), and the sand screening cylinder (2) is placed and locked on the vibration plate (5).

2. A vibrating sand screening machine as claimed in claim 1, characterized in that: The left-right reciprocating mechanism (3) comprises: a driving motor (31), a gear (32), a moving frame (33), a transmission plate (34) and a guide rod (35); the driving motor (31) is mounted on the top of the base (1); the double-axis output end of the driving motor (31) is provided with the gear (32); the gear (32) is meshed with meshing teeth on the inner wall of the moving frame (33) for transmission; the top of the moving frame (33) is provided with the transmission plate (34); the left and right ends of the transmission plate (34) are symmetrically provided with the guide rods (35); the guide rods (35) are slidably plugged into the guide holes on the side plates of the base (1).

3. A vibrating sand screening machine as claimed in claim 2, characterized in that: The invention also comprises a spring (41) and a movable shaft (42). The movable shaft (42) is symmetrically arranged at the four corners of the bottom of the vibration plate (5). The lower end of the movable shaft (42) is slidably plugged into the positioning hole on the transmission plate (34). The movable shaft (42) also comprises a spring (41) sleeved thereon. The upper and lower ends of the spring (41) are respectively connected to the vibration plate (5) and the transmission plate (34).

4. A vibrating sand screening machine as claimed in claim 2, characterized in that: The circumference of the gear (32) is a gear with incomplete meshing teeth, and the upper and lower inner walls of the moving frame (33) are provided with meshing teeth that mesh with the gear (32) for transmission.

5. A vibrating sand screening machine as claimed in claim 1, characterized in that: The top of the vibration plate (5) further comprises a placement groove (51) opened thereon, and the front side wall of the placement groove (51) further comprises a locking screw (52) for locking.

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