Shot blasting machine for casting

Abstract

A shot blasting machine for casting comprises a shot blasting machine body, a shot blasting box used for spraying shot blasting is arranged in the shot blasting machine body, a movable hanging assembly used for hanging a workpiece is arranged above the shot blasting machine body, a guide groove allowing the hanging assembly to go in and out is formed in the upper end face of the shot blasting machine body, and the shot blasting machine further comprises a stabilizing assembly. The tail end of the guide groove is provided with an access hole allowing the stabilizing assembly to go in and out, and after the hanging assembly hangs the workpiece to move to the access hole, the stabilizing assembly enters from the access hole and wraps the bearing rope so as to prevent the bearing rope from shaking during shot blasting operation. The shot blasting machine has the beneficial effects that the bearing rope is wrapped by the stabilizing assembly during shot blasting operation, so that the swing amplitude of the bearing rope caused by shot blasting impact is obviously reduced, and the workpiece positioning precision and the shot blasting uniformity are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a surface treatment equipment especially cast uses the shot blasting machine of cleaning. BACKGROUND

[0002] In the field of casting, mechanical manufacturing and surface treatment, the hook type shot blasting machine as the key equipment is widely used in the surface cleaning and strengthening treatment of small and medium-sized castings, forgings and welded parts. Its working principle is to impact the workpiece surface by high-speed shot, effectively remove the surface defects such as oxide skin, sand residue and rust layer, and realize surface stress strengthening. In the operation process, the operator suspends the workpiece at the end of the load rope of the hook device, and is pulled along the track to the closed space of the shot blasting chamber by the electric hoist. After starting the equipment, the shot in the shot magazine is evenly distributed to the high-speed rotating shot blasting impeller by the shot distributor, and a dense shot flow is formed by centrifugal acceleration, and the workpiece is impacted by multiple angles. The workpiece after completing the shot blasting process is removed from the cleaning chamber by the conveying system, and the matching circulating separation system simultaneously completes the screening and recovery of the shot and the debris, realizing continuous production.

[0003] The hook type shot blasting machine in the prior art generally has the core defect of insufficient dynamic stability. When the high-speed shot flow continuously impacts the workpiece surface, the load rope is only suspended and fixed by the top lifting point, and lacks a horizontal restraint device, resulting in composite vibration of the suspension system: longitudinal swing caused by the reaction force of the shot impact in the vertical direction, and rotational deflection in the horizontal direction due to the asymmetric cleaning condition. This multi-directional shaking not only causes the relative motion trajectory between the workpiece and the shot flow to deviate, resulting in a decrease in surface cleaning uniformity, but also causes the shot rebound trajectory to be disordered, reducing the kinetic energy utilization rate. Continuous vibration also accelerates the wear of the load rope and the guide wheel, and there is a risk of rope breakage, and the vibration energy is transmitted to the track system through the suspension mechanism, affecting the smooth operation of the machine, increasing the equipment failure rate and maintenance cost. TECHNICAL SOLUTION

[0004] In view of the deficiencies of the prior art, the utility model provides a cast shot blasting machine capable of preventing the load rope from shaking during shot blasting operation.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a cast shot blasting machine, comprising a shot blasting machine body, a shot blasting box for spraying shot is arranged in the shot blasting machine body, a mounting assembly for mounting workpieces is arranged above the shot blasting machine body, a guide groove for the mounting assembly to enter and exit is arranged on the upper end surface of the shot blasting machine body, and a stable assembly is further included, an exit hole for the stable assembly to enter and exit is arranged at the end of the guide groove, and after the mounting assembly mounts the workpiece and moves to the exit hole, the stable assembly enters from the exit hole and wraps the load rope to prevent the load rope from shaking during shot blasting operation.

[0006] The utility model discloses a beneficial effect is: through the stable component in the shot blasting operation, the bearing rope is wrapped, the swing amplitude of bearing rope caused by shot blasting impact is reduced significantly, and the workpiece positioning accuracy and shot blasting uniformity are promoted. The wrapping effect of the stable component can reduce the direct contact of the bearing rope and shot blasting, and prolong the service life of the rope. The design of the inlet and outlet hole at the end of the guide groove realizes the cooperative positioning of the stable component and the mounting component, and ensures the accurate butt joint of the wrapping action. As a preferred mode, the stable component can adopt a hydraulic drive push rod to realize linear displacement in cooperation with a guide rail, an optical sensor is arranged at the end of the push rod, and the positioning mark of the side wall of the guide groove is matched, when the mounting component reaches the predetermined position, the push rod is triggered to extend, so that the protective sleeve accurately sleeves the bearing rope along the limiting track in the guide groove. This structure can not only ensure the linear precision of the moving path, but also realize automatic control through the linkage of the sensor.

[0007] Further, the stable component includes a moving frame and a protective sleeve slidingly arranged on the moving frame, and a lock catch that can be opened and closed is arranged on the protective sleeve.

[0008] The sliding cooperation of the moving frame and the protective sleeve realizes linear movement control of the protective sleeve, ensuring that it can accurately sleeve the bearing rope. The openable and closable feature of the lock catch not only ensures the locking requirement during operation, but also facilitates quick release of the constraint after operation. As a preferred mode, the moving frame can be provided with a double guide rail structure, the bottom of the protective sleeve is provided with a sliding seat with a roller, buffer blocks are arranged at both ends of the guide rail to limit the stroke, and an electromagnetic locking device is arranged on the side wall of the moving frame to automatically lock when the protective sleeve reaches the working position. The lock catch can adopt a split hinge structure, including two symmetrical semicircular clamps, which are kept in a normally closed state by a torsional spring, and the end of the clamp is provided with a slope guide surface, which automatically pushes the clamp away when the bearing rope enters, and is reset and closed by the torsional spring after complete entry. This structure keeps the locking state when there is no external intervention, and can be unlocked by pushing the clamp through an external cylinder when it needs to be released.

[0009] Further, a plurality of expansion walls are circumferentially and intermittently arranged on the inner circumferential wall of the protective sleeve, an elastic member is arranged between the expansion wall and the protective sleeve, and when the bearing rope is located in the protective sleeve, the expansion wall is close to the bearing rope through the elastic member.

[0010] The combination design of the expansion wall and the elastic member realizes flexible clamping of the bearing rope, which can effectively suppress the shaking and avoid excessive extrusion damage to the rope. The circumferentially spaced expansion walls form multiple-point contact, which improves the clamping stability. As a preferred mode, the expansion wall can be made of an arc-shaped high polymer wear-resistant material, and the inner surface is provided with anti-skid lines. The elastic member is selected from a disc spring group, and each group of springs works independently corresponding to one expansion wall. When the bearing rope has a diameter deviation, each expansion wall can adaptively adjust the compression amount to ensure uniform contact pressure. The inner wall of the protective sleeve can also be provided with an array of pressure sensors to monitor the contact state of each expansion wall in real time, and trigger an alarm when the pressure is abnormal.

[0011] Further, the lock is rotatably arranged in the protective sleeve, and one end of the lock towards the interior of the shot blasting machine body is provided with an expansion sleeve. The expansion sleeve extends into the protective sleeve and is tightly attached to the bearing rope when the lock rotates.

[0012] The rotating lock structure realizes the radial displacement of the expansion sleeve through mechanical linkage, converts the rotary motion into clamping action, and has compact and reliable structure. The expansion sleeve is designed to extend without increasing the overall size of the protective sleeve to realize effective clamping. As a preferred mode, the lock shaft is eccentrically arranged on the side wall of the protective sleeve, and the shaft is connected with a worm gear transmission mechanism to realize accurate angle control through motor driving. The expansion sleeve is made of a memory alloy material and remains in a contracted state in normal state. When the lock is rotated to the working angle, the expansion sleeve is heated and expanded to produce radial deformation to form an interference fit with the bearing rope. This scheme combines active driving and material properties to ensure controllable clamping force and avoid mechanical wear.

[0013] Further, the expansion sleeve is composed of a plurality of expansion claws arranged in a circumferential direction, and gaps are formed between adjacent expansion claws. The expansion claws are elastic and tapered towards the internal aperture of the shot blasting machine body.

[0014] The split-type expansion claw structure improves the adaptability of the clamping mechanism, and the gap design allows the claw body to deform independently, which can compensate for the irregularity of the surface of the bearing rope. The tapered aperture forms a guiding effect to ensure smooth guiding of the bearing rope into the clamping area. As a preferred mode, the expansion claw adopts a titanium alloy sheet spring structure, a stress release groove is arranged at the root of each claw body, and the tip is processed into a 120° serrated clamping surface. An expansion gap is arranged between adjacent claw bodies, and the claw body can elastically bend outward during clamping to form a three-point positioning clamping mode. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the shot blasting machine body according to an embodiment of the present application;

[0016] Figure 2 is a partial enlarged view of the stabilizing assembly according to an embodiment of the present application;

[0017] Figure 3 A partial expansion schematic view of the protective sleeve of the embodiment of the present application;

[0018] Figure 4 A sectional view of the protective sleeve of the embodiment of the present application;

[0019] Figure 5 A bottom view of the protective sleeve of the embodiment of the present application. DETAILED DESCRIPTION

[0020] The embodiment of the present application is a kind of casting with shot blasting machine as shown in: Figures 1-5 Including shot blasting machine body 1, the body 1 inside is equipped with shot blasting box 11 for spraying shot blasting.The top of body 1 is equipped with the hanging component 2 that can move horizontally, hanging component 2 is hung workpiece through bearing rope 21.The upper end surface of body 1 is provided with guide groove 3 for the movement of hanging component 2, and the end of guide groove 3 is provided with a circular access hole 31.

[0021] Stable component 4 is configured at the end of guide groove 3, and the component includes moving frame 41.Moving frame 41 is respectively provided with protective sleeve 42 and drive motor 44 on both sides, and drive rope 45 is arranged between protective sleeve 42 and drive motor 44, which is sleeved on pulley 46 at the top end of protective sleeve 42, so that protective sleeve 42 can move up and down when drive motor 44 drives drive rope 45 to rotate.

[0022] The side wall of protective sleeve 42 is provided with opening 421 for the entry of bearing rope 21.A plurality of arc-shaped expansion walls 422 are uniformly distributed in the circumferential direction inside protective sleeve 42, and each expansion wall 422 is connected to the inner wall of protective sleeve 42 by an elastic member, i.e., compression spring 423.Protective sleeve 42 is provided with rotary lock catch 43 at the opening, and lock catch 43 is connected at the end to expansion sleeve 431 composed of a plurality of elastic expansion claws 432 connected in the circumferential direction, and there is a gap between adjacent expansion claws 432.The inner diameter of expansion sleeve 431 is designed with a tapering angle.

[0023] A moving groove 424 is arranged inside protective sleeve 42 for the movement of lock catch 43 therein and is eccentrically arranged, one end of lock catch 43 extends out of protective sleeve 42 and is driven to move by telescopic cylinder 47, and under the driving of telescopic cylinder 47, lock catch 43 can move in the eccentric moving groove 424, thereby locking or opening opening 421.

[0024] When hanging component 2 moves to access hole 31, protective sleeve 42 slides along moving frame 41 to the position of bearing rope 21 and cooperates with it for positioning.At this time, a plurality of expansion walls 422 are tightly attached to the rope body under the action of the spring.Lock catch 43 rotates to lock opening 421 while driving expansion sleeve 431 to extend out of protective sleeve 42 and tighten bearing rope 21.The tapering structure allows a plurality of expansion claws 432 to uniformly clamp bearing rope 21.This structure can effectively suppress the swing of bearing rope 21 during shot blasting operation.

[0025] After the work is completed, the lock catch 43 reversely rotates to make the expansion sleeve 431 retract into the protective sleeve 42 and open the opening 421, and then the moving frame 41 retreats to the initial position, and the mounting assembly 2 can be moved out of the device along the guide groove 3.

[0026] The above embodiment is only one of the preferred specific embodiments of the present application, and the usual changes and replacements made by those skilled in the art within the technical scheme of the present application are all included in the protection scope of the present application.

Claims

1. A shot blasting machine for casting, comprising a shot blasting machine body, a shot blasting box for ejecting shot disposed within the shot blasting machine body, a movable mounting assembly for mounting workpieces disposed above the shot blasting machine body, and a guide groove for the mounting assembly to enter and exit the upper surface of the shot blasting machine body, characterized in that: The device also comprises a stabilizing assembly, the end of the guide groove is provided with an access hole for the stabilizing assembly to enter and exit, and the stabilizing assembly enters the access hole and wraps the carrying rope to prevent the carrying rope from shaking during the shot blasting operation after the workpiece is hung by the hanging assembly and moved to the access hole.

2. A shot-blasting machine for casting according to claim 1, characterized in that: The stabilizing assembly comprises a moving frame and a protective sleeve slidingly arranged on the moving frame, and the protective sleeve is provided with a lock catch which can be opened and closed, and the lock catch is used to prevent the carrying rope from escaping from the protective sleeve after the carrying rope enters the interior of the protective sleeve.

3. A shot-blasting machine for casting according to claim 2, characterized in that: The inner circumferential wall of the protective sleeve is provided with a plurality of expansion walls which are spaced apart in the circumferential direction, and the expansion walls and the protective sleeve are provided with elastic members, and when the carrying rope is located in the protective sleeve, the expansion walls are close to the carrying rope through the elastic members.

4. A shot-blasting machine for casting according to claim 2, characterized in that: The lock catch is rotationally arranged in the protective sleeve, and the end of the lock catch which faces the interior of the shot blasting machine body is provided with an expansion sleeve, and the expansion sleeve extends into the protective sleeve and is close to the carrying rope when the lock catch rotates.

5. A shot-blasting machine for casting according to claim 4, characterized in that: The expansion sleeve is composed of a plurality of expansion claws which are arranged in the circumferential direction and are spaced apart, and gaps are formed between adjacent expansion claws, and the expansion claws are elastic and are arranged in a tapered manner towards the aperture of the shot blasting machine body.

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