CN105436957B - A kind of band buffering can adjust synchronous locating pneumatic fixture - Google Patents

Abstract

The invention relates to a pneumatic clamp with cushioning and adjustable synchronous positioning. The purpose is to provide a device that can meet the needs of automatic centering and positioning of square tooling plates of different sizes, and has the characteristics of not easy to damage the power element, adjustable splint position, and high efficiency. The technical solution is: an adjustable synchronously positioned pneumatic clamp with cushioning, which includes a strip-shaped bottom plate, a left rack and a right rack that are positioned on the left and right sides of the bottom plate in parallel with each other through guide blocks and can move toward each other along the length direction of the bottom plate. The rack and the power device that apply driving force to the left rack and the right rack at the same time; the left end of the left rack and the right end of the right rack are respectively connected with a clamping platform, and the power device includes a cylinder fixed in the center of the bottom plate through a gear seat, The lower gear installed at the inner bottom of the gear seat and carries out power transmission with the cylinder transmission shaft through the circular rack, and the upper gear arranged coaxially with the lower gear through the gear shaft and meshed with the left rack and the right rack at the same time.

Description

A Pneumatic Fixture with Buffer and Adjustable Synchronous Positioning

technical field

The invention relates to a process equipment, in particular to an adjustable synchronous positioning pneumatic clamp with buffer.

Background technique

At present, positioning fixtures are commonly used in the centering and positioning process of square plate processing tools, and the requirements for the speed, positioning accuracy, and versatility of positioning fixtures are getting higher and higher. The existing centering and positioning devices for square plates are mainly divided into the following two types:

Manual fixture: the clamping process requires human participation, time-consuming and inaccurate positioning;

Electric special fixture: the tightening process does not require human participation, and the action is fast; but due to the size deviation of the plate, the plate is too large, and the motor is easy to be damaged; the plate is too small, it cannot be clamped; and it is not suitable for asymmetrical positioning.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned background technology, and provide a pneumatic clamp with adjustable synchronous positioning and cushioning. The position of the splint can be adjusted, the efficiency is high, and the structure is simple.

The technical scheme that the present invention adopts is as follows:

A pneumatic clamp with adjustable synchronous positioning and cushioning, comprising a strip-shaped bottom plate, a left rack and a right rack which are respectively positioned parallel to each other on the left and right sides of the bottom plate through guide blocks and can move toward each other along the length direction of the bottom plate, and simultaneously A power device that applies driving force to the left rack and the right rack; the left end of the left rack and the right end of the right rack are respectively connected to a clamping table, which is characterized in that:

The power device includes a cylinder fixed at the center of the bottom plate through a gear seat, a lower gear installed at the bottom end of the gear seat and having power transmission with the cylinder transmission shaft through a circular rack, and coaxially arranged with the lower gear through a gear shaft and an upper gear that meshes with both the left and right racks;

The clamping table includes a left end plate and a right end plate installed on the left and right ends of the base plate, two guide shafts arranged in parallel between the left end plate and the right end plate and parallel to the left rack, a splint sleeved on the guide shaft and A spring that is sheathed on the guide shaft and exerts force on the left end plate and the splint at both ends; an adjustment screw for adjusting the position of the splint is also arranged on the right end plate.

The adjusting screw is positioned in the threaded hole in the middle of the right end plate, and the top of the adjusting screw presses against the splint.

The axes of the upper gear and the lower gear are perpendicular to the length direction of the fixing plate.

The left rack and the right rack are arranged parallel to each other with a certain distance; the upper gear is located between the left rack and the right rack and meshes with the left rack and the right rack at the same time.

The bottom of the bottom plate is engraved with a scale bar arranged along the moving direction of the moving splint.

The working principle of the present invention is:

When the present invention starts to work, the cylinder drives the circular rack to move forward (rear), the circular rack drives the lower gear to rotate clockwise (reversely), and the lower gear rotates while driving the upper gear to rotate clockwise (reversely), and the upper gear drives the left The rack moves to the right (left), and the right rack moves to the left (right). During the movement, the left and right racks respectively drive the left and right clamping tables to move with the left and right racks, thereby moving the splint left and right Clamp the square plate and adjust the position of the adjusting screw to adjust the position of the center point of the square plate; since the left rack and the right rack move the same distance during the rotation of the gear, the distance that the left clamping table moves to the right is the same as that of the right The distance the clamping table moves to the left is the same; due to the continuous power of the cylinder, the moving process of the left clamping table and the right clamping table is continuous, and the gear axis is always at the midpoint of the left splint and the right splint, so when the left splint and the right splint When the right splint is attached to the left edge and the right edge of the square tooling plate respectively, the gear axis is the center point of the square tooling plate.

The beneficial effects of the present invention are: the present invention can meet the needs of automatic centering and positioning of square tooling plates of different sizes, and the cylinder is flexible and not easy to be damaged, which overcomes the problem that the motor is easily damaged or cannot be clamped, and the clamping adjustment table can adjust the error and the position of the positioning center of the square plate, so the present invention has the characteristics of buffering, adjustable and synchronous positioning.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a schematic diagram of the three-dimensional structure of the clamping table in the present invention.

Fig. 3 is a schematic diagram of the exploded structure of the power device in the present invention.

Fig. 4 is a schematic structural view of the gear seat in the present invention.

Fig. 5 is a schematic cross-sectional structure diagram of the gear seat in the present invention.

Fig. 6 is a structural schematic diagram of the left rack in the present invention.

Fig. 7 is a schematic structural view of the splint in the present invention.

Fig. 8 is a schematic structural view of the right end plate in the present invention.

Fig. 9 is a schematic structural view of the left end plate in the present invention

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

As shown in Figure 1, a pneumatic clamp with cushioning and adjustable synchronous positioning includes a strip-shaped bottom plate 6, the left rack 3 is positioned on the left side of the bottom plate through several guide blocks 4, and the right rack 7 is also guided by several right guides. The block is positioned on the right side of the base plate; a certain distance is separated between each guide block, the bottom is respectively fixed on the base plate and guide holes are respectively opened on the guide block to facilitate the sliding of the left rack (or right rack).

The left end of the left rack and the right end of the right rack are respectively connected with a clamping table 5, and the power device positioned in the center of the bottom plate applies driving force to the left rack and the right rack at the same time.

As shown in Figure 3, in the power device, the cylinder 1 is fixed in the center of the bottom plate through the gear seat 2, and the lower gear 2-2 is installed at the inner bottom of the gear seat and is fixed with the circular rack 2- on the cylinder transmission shaft. 5 meshing, the lower end of the gear shaft 2-3 is fixed with the lower gear and the lower end is fixed with the upper gear 2-1; the axes of the upper gear and the lower gear are perpendicular to the length direction of the fixed plate. When the circular rack drives the lower gear to mesh, the left rack and the right rack can be driven to move through the gear shaft and the upper gear. Said left and right racks are arranged parallel to each other and at some distance (to provide space for the gears); the upper gear is located between the left and right racks and meshes with both. As shown in Figure 6, since the sliding range of the left rack and the right rack is limited, only a part of the rack is required to make teeth (it is not necessary to make all the teeth on the entire rack); the figure shows the left rack, the left The rack is only made with teeth on the right side, obviously the left and right racks are symmetrical to each other, so the right rack is only made with teeth on the left side.

Described left tooth rack, right tooth rack can be circular cross-section tooth rack or rectangular cross-section tooth rack, and the guide hole on the described guide block also makes suitable cross-section; As preferably, described left tooth rack, right tooth rack The racks are all made of circular racks, and the guide holes on the guide block are then selected with suitable circular guide holes.

As shown in Figures 4 and 5, the left and right ends of the gear seat are provided with connection holes for the sliding of the left and right racks, the front end is provided with a connection hole for the circular rack, and the middle is provided with two gears for the upper gear and the lower gear. groove.

As shown in FIG. 2 , the clamping platform includes a bottom plate 5-1, and a connecting hole 5-1-2 connected with the left and right racks is provided on the bottom plate. After the connection, the clamping platform can move together with the left and right racks. Left and right end plates 5-2 and right end plates 5-6 (as shown in Figures 8 and 9) are respectively installed at the left and right ends of the top of the bottom plate, and two parallel guide shafts 5-6 are arranged between the left end plate and the right end plate. 5. As shown in Figure 7, two through holes 5-4-1 are formed on the splint 5-4, and the splint can move on the guide shaft through the through holes.

The right end plate is also provided with an adjusting screw 5-7 for adjusting the position of the splint (as shown in Figure 8, the middle part of the right end plate is provided with a screw hole 5-6-1, and the adjusting screw is installed in the screw hole ), the adjusting screw is parallel to the guide shaft and one end presses the splint, a set of spring 5-3 on the guide shaft is also provided between the splint and the left end plate, and the adjustment screw splint can be moved on the guide shaft by rotation, Thereby, the distance between the splint and the right end plate is adjusted.

The bottom of the bottom plate is engraved with a scale bar 5-1-1 arranged along the moving direction of the moving splint, and the adjusting screw can limit the position of the splint according to the scale.

The two clamping tables in the present invention have the same structure, and their positions are symmetrical to each other. What is shown in FIG. 2 is the clamping table on the right.

Claims (3)

1. a kind of band buffering can adjust synchronous locating pneumatic fixture, including a bar shaped bottom plate (6), pass through guide pad (4) phase respectively Mutually abreast it is positioned at left and right sides of bottom plate and can make along the length direction of bottom plate the left rack (3) moved towards and right rack (7) power set of driving force and are simultaneously applied to left rack and right rack；The left end of the left rack and the right side of right rack End is connected to a clamping platform (5), it is characterised in that：

The power set include being fixed on the cylinder (1) in bottom plate center, installed in pinion stand inner bottom by pinion stand (2) And with entering the undergear (2-2) of action edge transmission by rack circle (2-5) and cylinder-driven axle and passing through rotary gear shaft (2-3) coaxially arranged with undergear and upper gear (2-1) that engaged simultaneously with left rack and right rack；

The clamping platform includes the first member plate (5-2) and right end plate (5-6), two parallel cloth for being separately mounted to bottom plate left and right ends Put the axis of guide (5-5) between first member plate and right end plate and with left rack parallel arrangement, the clamping plate (5-4) being enclosed on the axis of guide And it is set on the spring (5-3) that on the axis of guide and both ends force in first member plate and clamping plate respectively；Also set up in the right end plate There is an adjusting bolt (5-7) for being used to adjust splint position；

The adjusting bolt is positioned in the screwed hole in the middle part of right end plate, and the top top pressure of adjusting bolt clamping plate；

The axis of the upper gear and undergear is vertical with the length direction of bottom plate.

2. band buffering according to claim 1 can adjust synchronous locating pneumatic fixture, it is characterised in that：The left rack and Right rack is parallel to each other and is spaced some distances and arranges；The upper gear between left rack and right rack and simultaneously with a left side Rack and the engagement of right rack.

3. band buffering according to claim 2 can adjust synchronous locating pneumatic fixture, it is characterised in that：The bottom base plate It is carved with the scale strip (5-1-1) set along the activity direction for moving clamping plate.