Sand blasting clamp structure and metal casting part sand blasting treatment equipment

Abstract

The utility model discloses a sand blasting clamp structure and metal casting part sand blasting treatment equipment, and belongs to the field of metal casting part sand blasting. The sand blasting clamp structure comprises a base, a bottom plate capable of sliding in the axial direction of a metal bar is arranged on the base, a supporting plate is fixed to the bottom plate, a rotating shaft capable of rotating is arranged on the supporting plate, a circular ring capable of sliding in the axial direction of the rotating shaft is coaxially arranged on the rotating shaft, and at least three positioning rods evenly distributed in the circumferential direction are arranged on the circular ring. The outer circles of the multiple positioning rods can be tangent to the outer circle of the metal bar at the same time. A sliding plate capable of sliding in the axial direction of the metal bar is arranged on the bottom plate, an ejector rod coaxial with the rotating shaft is rotationally connected to the sliding plate, and the ejector rod and the rotating shaft can make contact with the two ends of the metal bar correspondingly and clamp the metal bar, so that the metal bar can be driven to rotate, and the metal bar can be fixed under the condition that a sand blasting gun does not move. And the sand blasting treatment on the outer circular surface of the whole metal bar can also be realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal casting sand blasting field, concretely relates to sand blasting fixture structure and metal casting piece sand blasting treatment equipment. BACKGROUND

[0002] The principle of sand blasting is that under the action of compressed fluid (air, liquid), a high-speed jet beam is formed by a sand blasting gun to spray the material (copper ore sand, etc.) at a high speed to the surface of the object to be treated, so that the surface of the object obtains certain cleanliness, flatness and different roughness, improves the mechanical properties of the object surface and improves the fatigue resistance of the object.

[0003] After the metal bar stock casting is formed, in order to improve the smoothness of the outer surface, the outer surface needs to be sand blasted, which is different from the plane, and in the case that the angle of the sand blasting gun is fixed, the outer surface of the bar stock needs to be turned over and adjusted during sand blasting operation, and therefore a sand blasting fixture structure is proposed. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model aims at sand blasting fixture structure and metal casting piece sand blasting treatment equipment, and solves the problems in the prior art.

[0005] The utility model can achieve the purpose by the following technical scheme:

[0006] The sand blasting fixture structure comprises a base, a bottom plate capable of sliding along the metal bar stock in the axial direction is arranged on the base, a supporting plate is fixed on the bottom plate, a rotating shaft capable of rotating is arranged on the supporting plate, a circular ring capable of sliding along the rotating shaft in the axial direction is coaxially arranged on the rotating shaft, at least three positioning rods uniformly distributed in the circumferential direction are arranged on the circular ring, and the outer circles of the plurality of positioning rods can be tangent to the outer circle of the metal bar stock at the same time;

[0007] A sliding plate capable of sliding along the metal bar stock in the axial direction is arranged on the bottom plate, a top rod coaxial with the rotating shaft is rotatably connected to the sliding plate, and the top rod and the rotating shaft can respectively contact and clamp the two ends of the metal bar stock.

[0008] Further, one dust collection assembly is arranged on each side of the metal bar stock, the dust collection assembly comprises a mounting plate, a plurality of air suction pipes are arranged on the mounting plate and connected with an air suction pump.

[0009] Further, the two mounting plates can synchronously and reversely slide.

[0010] Further, the two mounting plates are slidably connected with the bottom plate, a third screw rod capable of rotating is arranged on the bottom plate, a first external thread and a second external thread with opposite rotation directions and equal pitches are arranged on the third screw rod, and the first external thread and the second external thread respectively penetrate through the two mounting plates and are threadedly connected with the two mounting plates.

[0011] Furthermore, the thread helix angle of both the first and second external threads is less than the equivalent friction angle.

[0012] Furthermore, a connecting block is provided at the lower end of the base plate, and the connecting block is slidably connected to the base along the axial direction of the metal bar. A first lead screw that can rotate is provided at the lower end of the base, and the first lead screw passes through the connecting block and is threadedly connected to it.

[0013] Furthermore, the thread helix angle of the first lead screw is less than the equivalent friction angle.

[0014] Furthermore, the sliding plate and the base plate are slidably connected along the axial direction of the metal bar, and a rotatable second lead screw is provided on the base plate, which passes through the sliding plate and is threadedly connected to it.

[0015] Furthermore, the thread helix angle of the second lead screw is less than the equivalent friction angle.

[0016] A sandblasting treatment device for metal castings includes a sandblasting gun and the aforementioned sandblasting fixture structure.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting a base plate on the base that can slide along the axis of the metal bar, setting a rotary positioning component on the support plate and setting a rotating shaft therein, setting a sliding plate on the base plate that can slide along the axis of the metal bar, and rotatably connecting a top rod on the sliding plate, the top rod is coaxial with the rotating shaft and can coaxially clamp the metal bar, thereby driving the metal bar to rotate, so that the entire outer surface of the metal bar can be sandblasted even when the sandblasting gun is stationary.

[0019] 2. By setting a ring in the rotary positioning assembly that can slide along the axial direction of the metal bar, and fixing four circumferentially evenly distributed positioning rods on the ring, the centering of the metal bar can be achieved by the four positioning rods being tangent to the outer circle of the metal bar, thereby enabling the metal bar to be coaxially assembled with the rotating shaft.

[0020] 3. By installing dust collection components on both sides of the metal bar, the dust generated by sandblasting can be adsorbed; and by setting the two dust collection components to slide synchronously in opposite directions, sufficient operating space can be provided during loading and unloading. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is the overall structure schematic view of the clamp structure of the utility model;

[0023] Figure 2 is the rotating positioning assembly structure schematic view of the utility model;

[0024] Figure 3 is the sliding plate structure schematic view of the utility model;

[0025] Figure 4 is the bottom plate structure schematic view of the utility model;

[0026] Figure 5 is the dust suction assembly structure schematic view of the utility model;

[0027] Figure 6 is the third screw structure schematic view of the utility model. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] As shown in Figures 1 to 3 , the sand blasting clamp structure comprises a base 1, the upper end of the base 1 is provided with a bottom plate 2 capable of sliding along the axial direction of the metal bar, the upper end of the bottom plate 2 is fixedly provided with a support plate 4, the upper end of the support plate 4 is provided with a rotating positioning assembly 5, the rotating positioning assembly 5 is provided with a rotating shaft 51 rotatably connected with the support plate 4, the end of the rotating shaft 51 can be in contact and abut against the end face of the metal bar, and can be coaxial with the metal bar; the upper end of the bottom plate 2 is provided with a sliding plate 6 capable of sliding along the axial direction of the metal bar, the sliding plate 6 is rotatably connected with a top rod 61, and the top rod 61 is coaxial with the rotating shaft 51;

[0030] In use, the top rod 61 is controlled to move close to the rotating shaft 51, so that the two ends of the metal bar can be fixedly abutted and fixed respectively, and in the case of ensuring that the metal bar is coaxial with the top rod 61 and the rotating shaft 51, a motor is arranged on the support plate 4 to drive the rotating shaft 51 to rotate, so that the metal bar can be driven to rotate; then the bottom plate 2 is slid along the axial direction of the metal bar, so that the entire outer cylindrical surface of the metal bar can be subjected to sand blasting treatment without moving the sand blasting gun.

[0031] In the embodiment, the shaft 51 is fixed with a baffle 52, the baffle 52 is provided with a cylinder 55, the driving shaft of the cylinder 55 is fixed with a ring 53, the ring 53 is sleeved on the shaft 51 and coaxial with the shaft 51, the ring 53 is fixed with four positioning rods 54 which are uniformly distributed in the circumference, the four positioning rods 54 penetrate through the baffle 52 and can exceed the end surface of the shaft 51, and can be tangent to the outer circle of the metal bar, so as to realize the centering of the metal bar, so that the metal bar is coaxial with the shaft 51.

[0032] When the metal bar is centered and calibrated, the metal bar is clamped by the shaft 51 and the top rod 61, then the ring 53 is controlled to move away from the baffle 52, so that the positioning rod 54 can retract into the baffle 52, thereby ensuring that the sand blasting gun can sand blast the outer surface of the metal bar close to the end, preventing obstruction.

[0033] It should be noted that the number of positioning rods 54 includes but is not limited to four, in some embodiments, the number of positioning rods 54 can be three or more than four, but the plurality of positioning rods 54 must be uniformly distributed in the circumference.

[0034] In the embodiment, as shown in Figure 4 The lower end of the bottom plate 2 is provided with a connecting block 21, the connecting block 21 is slidably connected with the base 1 along the axial direction of the metal bar, the lower end of the base 1 is provided with two first fixed plates 11, the first fixed plates 11 are rotatably connected with a first lead screw 3, the first lead screw 3 penetrates through the connecting block 21 and is threadedly connected with the connecting block 21, a motor is arranged on one of the first fixed plates 11 to drive the rotation of the first fixed plate 11, so as to drive the sliding of the bottom plate 2 along the metal bar; and the first lead screw 3 needs to have self-locking property (the thread angle of the first lead screw 3 is smaller than the equivalent friction angle), so as to ensure that the sliding position of the bottom plate 2 remains stable after adjustment.

[0035] In the embodiment, the sliding plate 6 is slidably connected with the bottom plate 2 along the axial direction of the metal bar, the upper end of the bottom plate 2 is fixed with two second fixed plates 22, the second fixed plates 22 are rotatably connected with a second lead screw 7, the second lead screw 7 penetrates through the sliding plate 6 and is threadedly connected with the sliding plate 6, a motor is arranged on one of the second fixed plates 22 to drive the rotation of the second lead screw 7, so as to realize the sliding of the sliding plate 6; similarly, in order to ensure the stability of the clamping force of the top rod 61 and the shaft 51 on the metal bar, the second lead screw 7 also needs to have self-locking property, that is, the thread angle of the second lead screw 7 is smaller than the equivalent friction angle.

[0036] Of course, the way to drive the sliding of the sliding plate 6 includes but is not limited to the structure of the second lead screw 7 in the embodiment, in some embodiments, a hydraulic cylinder, an extension rod or other linear driving components can also be arranged on the bottom plate 2 to directly drive the sliding of the sliding plate 6.

[0037] It is worth mentioning that sand blasting in the process stage, due to the impact of sand on the workpiece surface, part of the sand is rapidly decomposed, floating in the air, forming dust, dust if not timely absorption processing, once a large number of inhalation of human body will cause human body damage; therefore, in this embodiment, the two sides of the metal bar are provided with a dust suction assembly 8 respectively, to absorb the dust generated by sand blasting;

[0038] As Figure 5 shown, the dust suction assembly 8 includes a mounting plate 81 located on the side of the metal bar, the mounting plate 81 is provided with a plurality of suction pipes 82, the suction pipe 82 is connected with the suction pump, under the action of the suction pump, the dust generated by sand blasting is absorbed;

[0039] In addition, the two mounting plates 81 can be synchronous reverse sliding to facilitate the adjustment of the distance between the suction pipe 82 and the metal bar, when the dust needs to be absorbed, the suction pipe 82 can be controlled to be close to the metal bar, and when the material is fed (the metal bar is disassembled), the two mounting plates 81 can be controlled to be away from each other to provide the operation space for feeding and discharging;

[0040] In this embodiment, the mounting plate 81 is slidably connected with the bottom plate 2, the upper end of the bottom plate 2 is provided with two third fixed plates 23, the third screw rod 9 is rotatably connected between the two third fixed plates 23, as Figure 6 shown, the third screw rod 9 is provided with first external thread 91 and second external thread 92 with opposite rotation direction and equal pitch, the first external thread 91 and the second external thread 92 respectively penetrate the two mounting plates 81 and are threadedly connected with them, the third screw rod 9 is driven to rotate by setting the motor on one of the third fixed plates 23, so that the synchronous reverse sliding of the two mounting plates 81 can be realized;

[0041] Moreover, the third screw rod 9 needs to have self locking ability, that is, the thread angle of the first external thread 91 and the second external thread 92 is less than the equivalent friction angle, to ensure that the position of the two mounting plates 81 remains stable after adjustment.

[0042] Of course, in some embodiments, two hydraulic cylinders or air cylinders can also be arranged on the bottom plate 2 to drive the two mounting plates 81 to approach or move away from each other synchronously.

[0043] Working principle:

[0044] By setting the bottom plate 2 capable of sliding along the metal bar axial direction on the base 1, setting the rotary positioning assembly 5 on the support plate 4 and setting the rotating shaft 51 capable of rotating in the rotary positioning assembly 5, setting the sliding plate 6 capable of sliding along the metal bar axial direction on the bottom plate 2, and rotatingly connecting the top rod 61 with the sliding plate 6, the top rod 61 is coaxial with the rotating shaft 51 and can coaxially clamp the metal bar, thereby driving the metal bar to rotate, so that the sand blasting treatment of the outer surface of the entire metal bar can be realized without moving the sand blasting gun. By setting the annular ring 53 capable of sliding along the metal bar axial direction in the rotary positioning assembly 5, the four positioning rods 54 uniformly distributed in the circumferential direction are fixed on the annular ring 53, the four positioning rods 54 can be tangent to the outer circle of the metal bar, so as to realize the centering of the metal bar, thereby coaxially assembling the metal bar with the rotating shaft 51. By setting the dust suction assembly 8 on both sides of the metal bar, the dust generated by sand blasting is adsorbed; and by setting the two dust assemblies 8 to synchronously and reversely slide, sufficient operation space is provided when feeding and discharging.

[0045] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A sandblasting jig structure comprising a base (1), characterized in that, The base (1) is provided with a bottom plate (2) capable of sliding along the metal bar in the axial direction, the bottom plate (2) is fixed with a support plate (4), the support plate (4) is provided with a rotating shaft (51) capable of rotating, the rotating shaft (51) is coaxially provided with a circular ring (53) capable of sliding along the rotating shaft (51) in the axial direction, the circular ring (53) is provided with at least three positioning rods (54) uniformly distributed in the circumferential direction, and the outer circles of the plurality of positioning rods (54) can be tangent to the outer circle of the metal bar at the same time. The bottom plate (2) is provided with a sliding plate (6) capable of sliding along the metal bar in the axial direction, the sliding plate (6) is rotatably connected with a top rod (61) coaxial with the rotating shaft (51), and the top rod (61) and the rotating shaft (51) can respectively contact and clamp the two ends of the metal bar.

2. The sandblasting fixture structure according to claim 1, wherein The metal bar is provided with a dust suction assembly (8) on each side, and the dust suction assembly (8) comprises a mounting plate (81) provided with a plurality of suction pipes (82) and connected with a suction pump.

3. The sandblasting fixture structure according to claim 2, wherein The two mounting plates (81) can synchronously slide in opposite directions.

4. The sandblasting fixture structure according to claim 3, wherein The two mounting plates (81) are slidably connected with the bottom plate (2), and the bottom plate (2) is provided with a third screw rod (9) capable of rotating, the third screw rod (9) is provided with a first external thread (91) and a second external thread (92) with opposite rotation directions and equal pitches, and the first external thread (91) and the second external thread (92) respectively penetrate the two mounting plates (81) and are threadedly connected therewith.

5. The sandblasting fixture structure according to claim 4, wherein The thread angles of the first external thread (91) and the second external thread (92) are smaller than the equivalent friction angle.

6. The sandblasting fixture structure of claim 1, wherein, The lower end of the bottom plate (2) is provided with a connecting block (21) slidably connected with the base (1) along the axial direction of the metal bar, and the lower end of the base (1) is provided with a first screw rod (3) capable of rotating, the first screw rod (3) penetrates the connecting block (21) and is threadedly connected therewith.

7. The sandblasting fixture structure according to claim 6, wherein The thread angle of the first screw rod (3) is smaller than the equivalent friction angle.

8. The sandblasting fixture structure of claim 1, wherein, The sliding plate (6) is slidably connected with the bottom plate (2) along the axial direction of the metal bar, and the bottom plate (2) is provided with a second screw rod (7) capable of rotating, the second screw rod (7) penetrates the sliding plate (6) and is threadedly connected therewith.

9. The sandblasting fixture structure according to claim 8, characterized in that The thread angle of the second screw rod (7) is smaller than the equivalent friction angle.

10. A metal cast member sandblasting apparatus comprising a sandblasting gun, characterized by, Also comprising the sand blasting clamp structure of any one of claims 1-9.

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