Locking and hanging unit for wax mould sand spraying production line

Abstract

The utility model relates to the technical field of wax mould automatic sand spraying, in particular to a locking and hanging unit for a wax mould sand spraying production line, which comprises an arch-shaped frame, a hanging plate is fixed at a chord opening at the upper end of the arch-shaped frame, and the upper end of the hanging plate is connected with a sliding rail through a hanging pulley and fixedly connected with a chain moving along the sliding rail. One side, deviating from the arch-shaped frame, of the bottom end of the lifting plate is connected with a steady-state wheel through a wheel shaft; the lower end chord opening of the arch-shaped frame is rotationally connected with a suspender barrel, the suspender barrel is rotationally connected with a suspender through a bearing, a friction wheel is fixed to the upper end of the suspender, and a sleeve for clamping a wax mold is arranged at the lower end of the suspender. According to the utility model, the steady state wheel is adopted to keep the locking and hanging unit not inclined during slurry dipping and sand spraying of the wax mould, and the friction wheel is far away from the clamping part of the wax mould, so that the guide plate is more convenient to arrange, and more labor is saved when the wax mould is driven to deflect.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic sand pouring on wax models, in particular to a locking unit used in a wax model sand pouring production line. Background Art

[0002] Wax casting is a very important process of shell making. The wax model needs to go through at least three processes of slurry dipping, sand pouring, and drying to wrap a layer of sand shell with appropriate thickness and strength on the outside of the wax model. The three-step process is time-consuming. If it is done manually, the labor intensity is high and the production environment is poor. In addition, human factors often cause the sand shell to be thin, thick, or uneven in thickness, resulting in shell defects and waste.

[0003] Therefore, modern wax mold production usually adopts mechanical automated shell making, such as rotary shell making machine, which sets upper and lower mold positions, slurry dipping position, slurry draining position and sand sprinkling position on the four sides of the column in sequence. The wax mold rotates one circle in the four stations to complete the shell making process. The equipment occupies a small area, but requires workers to continuously load and unload materials, and the labor intensity is also high. It is suitable for small batch production, and the rotation and flipping of the wax mold requires power from a motor.

[0004] In order to improve production efficiency and reduce the frequent clamping of wax models, the automatic production mode of conveyor chain assembly line is increasingly used, such as the patent 201110248755X silica sol shell automatic slurry system, which hangs the wax model on a clamping mechanism that moves with the chain. When passing through the slurry, sanding and drying stations in sequence, these processes can be automatically completed in sequence, and can be circulated with the chain, passing through these stations many times, without loading and unloading in the middle, which greatly saves manpower. However, the clamping unit of the slurry system is prone to tilt due to the shift of the center of gravity after the wax model is deflected, which is not conducive to the stability of the wax model; in addition, the position of the friction wheel also requires a greater force to deflect the wax model, increasing power loss. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the prior art and to provide a locking and hanging unit for a wax model sand pouring production line, which adopts a steady-state wheel to stabilize the posture of the hanger, and the friction wheel and the wax model are arranged at both ends of the deflection axis of the clamping rod, which is more convenient for the spatial arrangement of the guide plate, and the force arm of the friction wheel can be lengthened, thereby saving the deflection torque of the wax model.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a locking and hanging unit for a wax model sand pouring production line comprises a bow-shaped frame, a hanging plate is fixed to the upper end chord of the bow-shaped frame, the upper end of the hanging plate is connected to a slide rail through a hanging pulley, and is fixedly connected to a chain moving along the slide rail, and a side of the bottom end of the hanging plate away from the bow-shaped frame is connected to a stabilizing wheel through a wheel axle; a hanging rod tube is rotatably connected to the lower end chord of the bow-shaped frame, a deflection axis of the hanging rod tube is perpendicular to the wheel axle of the stabilizing wheel, the hanging rod tube is rotatably connected to a hanging rod through a bearing, a friction wheel is fixed to the upper end of the hanging rod, and a sleeve for clamping the wax model is provided at the lower end of the hanging rod.

[0007] Preferably, there are two hanging pulleys, and the axis of the deflection axis of the boom tube is located in the symmetry plane between the two hanging pulleys.

[0008] Preferably, the sleeve wall is quadrant-symmetrically provided with two inverted J-shaped slots, the lower end of the slots extending to the bottom end of the sleeve and forming a notch at the bottom end for the wax model core rod to pass through. Quadrant symmetry means that one of the two slots can be rotated 180° around a certain point to overlap with the other slot.

[0009] Preferably, the sleeve is provided with a locking hole penetrating the sleeve above the slot, and a locking rod for limiting the upward movement of the wax model core rod is inserted into the locking hole.

[0010] Preferably, one end hole of the locking hole is a threaded hole, and the tail end of the locking rod is connected to the sleeve through a rope.

[0011] The beneficial effects of the utility model are as follows: a locking and hanging unit for a wax model sand pouring production line comprises a bow-shaped frame, a hanging plate is fixed to the upper end chord of the bow-shaped frame, the upper end of the hanging plate is connected to a slide rail via a hanging pulley, and is fixedly connected to a chain moving along the slide rail, and a side of the bottom end of the hanging plate facing away from the bow-shaped frame is connected to a stabilizing wheel via a wheel axle; a hanging rod tube is rotatably connected to the lower end chord of the bow-shaped frame, a deflection axis of the hanging rod tube is perpendicular to the wheel axle of the stabilizing wheel, the hanging rod tube is rotatably connected to a hanging rod via a bearing, a friction wheel is fixed to the upper end of the hanging rod, and a sleeve for clamping the wax model is provided at the lower end of the hanging rod. The utility model is used for an automated production line for wax mold shell making, in which a locking and hanging unit is hung on the wax mold and moves and circulates with a chain, automatically completing shell making processes such as slurry dipping, sand pouring and drying, saving manpower and being able to efficiently complete mass production; in addition, the stabilizing wheel is used to keep the locking and hanging unit from tilting when the wax mold is dipped in slurry and sand poured, and the friction wheel is away from a clamping position of the wax mold, making it easier to arrange a guide plate and saving more effort when driving the wax mold to deflect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of the locking unit used in the wax model sand pouring production line of the utility model;

[0013] Figure 2 yes Figure 1 Left view of

[0014] Figure 3 yes Figure 2 A partial enlarged view of .

[0015] Description of reference numerals:

[0016] 1 - bow frame, 2 - hanging plate, 3 - hanging pulley, 4 - slide rail, 5 - steady wheel, 6 - hanging rod tube, 7 - hanging rod, 8 - friction wheel, 9 - sleeve, 91 - slot, 92 - lock hole, 93 - lock rod. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0018] like Figures 1 to 3 As shown, the locking and hanging unit for the wax model sand pouring production line of this embodiment includes a bow frame 1, a hanging plate 2 is fixed to the upper end chord of the bow frame 1, the upper end of the hanging plate 2 is connected to the slide rail 4 through a hanging pulley 3, and is fixedly connected to a chain moving along the slide rail 4, and the side of the bottom end of the hanging plate 2 away from the bow frame 1 is connected to a stabilizing wheel 5 through a wheel axle; the lower end chord of the bow frame 1 is rotatably connected to a hanging rod tube 6, the plane where the hanging rod tube 6 is deflected is parallel to the wheel axle of the stabilizing wheel 5, the hanging rod tube 6 is rotatably connected to a hanging rod 7 through a bearing, the upper end of the hanging rod 7 is fixed with a friction wheel 8, and the lower end of the hanging rod 7 is provided with a sleeve 9 for clamping the wax model.

[0019] This embodiment is mainly used for large-scale wax mold shell production lines. As an important unit of the production line, it clamps the wax mold and cooperates with other auxiliary facilities of the production line to drive the wax mold to deflect and rotate, thereby automatically completing the wax mold dipping, draining, sanding and drying. The whole process requires almost no manpower, and workers only need to monitor the supply of materials.

[0020] During production, workers insert the upper end of the wax model core rod into the sleeve 9, and use the hanging nail on the core rod to cooperate with the slot 91 on the sleeve 9 to achieve the effect of hanging the wax model. In order to prevent the wax model from falling off the sleeve 9 when it is deflected, the sleeve 9 is provided with a locking hole 92 passing through the sleeve 9 above the slot 91, and a locking rod 93 is inserted into the locking hole 92 to limit the wax model core rod from moving upward.

[0021] The wax model of the hanging lock unit is moved along the slide rail 4 as dragged by the chain. In order to prevent the bow frame 1 from derailing or tilting, there are two hanging pulleys 3, and the axis of the deflection axis of the hanging rod tube 6 is located in the symmetry plane between the two hanging pulleys 3, that is, when the hanging rod 7 is in a vertical position, the hanging rod 7 is aligned with the hanging plate 2, that is, the two hanging pulleys 3 are symmetrical about the hanging plate 2.

[0022] The production line is provided with a side rail engaging the steady wheel 5 (limiting wheel for stabilizing the bow frame posture) and a guide plate that contacts the friction wheel 8 to drive the suspension rod 7 to deflect and rotate from the slurry dipping station to the sand pouring station; the side rail is a square tube with an opening on the side, and the steady wheel 5 is connected with the side rail after entering the side rail and is restricted by the side rail, thereby limiting the inclination of the bow frame 1; the guide plate is a long strip plate with a rectangular cross section, and the height and the plate surface inclination angle gradually change three-dimensionally in space along with the advancing direction of the production line. The plate surface of the guide plate is initially vertical, and the plate surface inclination angle changes in the range of 0° to 90°, and the transition is smooth. The guide plate contacts the friction wheel 8 and presses downward to lift the wax model. The lower the guide plate, the greater the deflection angle of the suspension rod 7, that is, the higher the height of the wax model is lifted; and because the locking unit moves with the chain, the friction wheel 8 rolls along the guide plate, thereby driving the suspension rod 7 fixedly connected to the friction wheel 8 to rotate, that is, driving the wax model to rotate, so as to better dip, drain and hang sand. In this embodiment, there is only one driving force, the chain. The friction wheel 8 and the wax mold are arranged at both ends of the suspension rod 7, and the distance from the friction wheel 8 to the deflection axis of the suspension rod 7 is greater than the distance from the wax mold to the deflection axis of the suspension rod 7, thereby making the guiding of the guide plate easier.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, and for the convenience of describing the technical solution, the front, rear, left, right, top, middle, and bottom directions adopted are based on the settings in the accompanying drawings, rather than limiting the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. The locking unit used in the wax model sand pouring production line is characterized by: It includes a bow-shaped frame, a hanging plate is fixed to the upper end string mouth of the bow-shaped frame, the upper end of the hanging plate is connected to the slide rail through a hanging pulley, and is fixedly connected to a chain moving along the slide rail, and the side of the bottom end of the hanging plate away from the bow-shaped frame is connected to a stabilizing wheel through an axle; the lower end string mouth of the bow-shaped frame is rotatably connected to a hanging rod tube, the deflection axis of the hanging rod tube is perpendicular to the axle of the stabilizing wheel, the hanging rod tube is rotatably connected to a hanging rod through a bearing, a friction wheel is fixed to the upper end of the hanging rod, and a sleeve for clamping a wax model is provided at the lower end of the hanging rod.

2. The locking unit for the wax model sand pouring production line according to claim 1 is characterized in that: There are two hanging pulleys, and the axis of the deflection axis of the hanging rod tube is located in the symmetry plane between the two hanging pulleys.

3. The locking unit for the wax model sand pouring production line according to claim 1 is characterized in that: The sleeve wall quadrant is symmetrically provided with two inverted J-shaped clamping grooves, the lower ends of the clamping grooves extend to the bottom end of the sleeve and form a notch at the bottom end for the wax model core rod hanging nail to pass through.

4. The locking unit for the wax model sand pouring production line according to claim 3 is characterized in that: The sleeve is provided with a locking hole which penetrates the sleeve above the clamping slot, and a locking rod which limits the upward movement of the wax model core rod is inserted into the locking hole.

5. The locking unit for the wax model sand pouring production line according to claim 4 is characterized in that: One end hole of the locking hole is a threaded hole, and the tail end of the locking rod is connected to the sleeve through a rope.

Images