CN114346929A - Clamp capable of avoiding workpiece deformation - Google Patents

Abstract

The invention discloses a fixture that can avoid deformation of workpieces, comprising a support table, an electric stop bar, a limit aid and a controller. Two sets of the electric stop bars are respectively installed on the support platform, and the electric stop bars include A blocking bar body and a driver, the blocking bar bodies of the two groups of the electric blocking bars are respectively driven by the driver to move closer to or away from each other so as to clamp or release the workpiece located between the adjacent surfaces, and several sets of the limit aids are respectively Installed on the block body, the limit aid includes a positioning bolt, a support piece, a fastening bolt, a fastening block and a fastening plate, the positioning bolt is screwed on the block body, and the supporting piece is Horizontally arranged, one end is rotatably connected to the screw rod of the positioning bolt and the other end is threadedly connected to the screw rod of the fastening bolt, the fastening block is installed on the bottom end of the screw rod of the fastening bolt and presses down the top surface of the fastening plate , the fastening plate is placed on the workpiece, which can effectively prevent the workpiece from being pinched.

Description

A fixture that can avoid workpiece deformation

【Technical field】

The present invention relates to the technical field of clamps, in particular to the technical field of clamps that can avoid deformation of workpieces.

【Background technique】

Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making thermoplastic or thermosetting plastics into various shapes of plastic products using plastic molding molds. It is divided into vertical, horizontal and all-electric types. Injection molding is a plastic processing method in which plastic is plasticized in the heating barrel of an injection molding machine, and then injected into the cavity of a closed mold by a plunger or a reciprocating screw, thereby forming an injection-molded workpiece with complex shapes, precise dimensions or with inserts. .

At present, when using a fixture to clamp a thin-plate-shaped injection-molded workpiece with a thin thickness and high machining accuracy, the problem of workpiece deformation is prone to occur, resulting in uneven thickness of each point of the workpiece and a decrease in quality, which affects the later stage. The sale and use of it needs to be solved urgently.

[Content of the invention]

The purpose of the present invention is to solve the problems in the prior art, and to propose a fixture that can avoid the deformation of the workpiece, which can effectively prevent the workpiece from being pinched while ensuring the clamping effect.

In order to achieve the above purpose, the present invention proposes a fixture that can avoid the deformation of the workpiece, which includes a support table, an electric stop bar, a limit aid and a controller. The electric stop bar includes a stop bar body and a driver. The stop bar bodies of the two groups of the electric stop bars are driven by the driver to approach or move away from each other so as to clamp or release the workpieces located between the adjacent surfaces. The limiting aids are respectively installed on the retaining bar body, the limiting aids include positioning bolts, support sheets, fastening bolts, fastening blocks and fastening plates, and the positioning bolts are threadedly connected on the retaining bar body , the support piece is horizontally arranged and one end is rotatably connected to the screw rod of the positioning bolt and the other end is threadedly connected to the screw rod of the fastening bolt, the fastening block is installed on the bottom end of the screw rod of the fastening bolt and is pressed downwardly The top surface of the fixing plate, the fixing plate is placed on the workpiece, and the controller is respectively electrically connected with the two groups of electric blocking bars.

Preferably, a boss is provided in the center of the top surface of the support table, the drivers of the two sets of electric blocking bars are respectively installed outside the bosses, and the blocking bar bodies of the two sets of electric blocking bars are respectively located on the bosses .

Preferably, the driver includes a motor, a lead screw, an end plate and a nut, the motor and the end plate are oppositely arranged and fixed on the outer edge of the top surface of the support table, and one end of the lead screw is connected to the output shaft of the motor The other end is rotatably connected to the end plate, the nut is threadedly connected to the threaded section of the screw rod, and one end of the retaining bar body is fixed on the nut.

Preferably, the electric stop bar further includes a guide assembly, the guide assembly includes a slider and a slide rail, the slide rail is installed outside the boss, the slider is fixed on the bottom surface of the other end of the stop bar body and slides Attached to the slide rail.

Preferably, a positioning bar is detachably installed on the top surface of the boss and on the side edge of the main body without the blocking bar.

Preferably, the fastening block is in the shape of an inverted cone or an inverted truncated cone.

Preferably, the top end of the fastening plate is provided with a notch, and the bottom end of the fastening block is inserted into the notch.

Preferably, it also includes a dispersible sheet, the dispersible sheet includes a sheet body and a central shaft, the sheet body is located between the fastening plate and the workpiece and is provided with a gap, and the bottom end of the central shaft is fixed on the sheet body top center.

Beneficial effects of the present invention: In the present invention, two sets of electric stop bars are arranged, and the body of the stop bar is driven by the driver to approach or move away from each other so as to clamp or release the workpiece between the adjacent surfaces, and then the positioning bolt is used to perform a limit aid. The position of the clamp is fixed, and the cooperation between the support piece and the fastening bolt is used to drive the fastening block to move up and down, and then under the isolation of the appropriate size of the fastening plate, the action pressure of the fastening block is dispersed, so as to ensure the clamping effect. At the same time, the workpiece is effectively prevented from being pinched; through the mutual cooperation of the fastening block and the notch, the fastening plate can be effectively prevented from being accidentally slipped away during the installation process; The pressure can be further dispersed without affecting the processing.

The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is a top view of a fixture of the present invention that can avoid deformation of a workpiece;

Fig. 2 is a top view of a fixture of the present invention that can avoid deformation of the workpiece after removing the limiting aid and the dispersing sheet;

FIG. 3 is a schematic diagram of the assembly of a limiting aid of a fixture that can avoid deformation of a workpiece, a retaining bar body, a dispersing sheet and a workpiece according to the present invention.

In the picture: 1-Support table, 11-Boss, 2-Electric stop bar, 21- Motor, 22- Screw rod, 23- End plate, 24- Nut nut, 25- Stop bar body, 26- Slider, 27 -Slide rail, 3-limiting aid, 31-positioning bolt, 32-support piece, 33-fastening bolt, 34-fastening block, 35-fastening plate, 4-positioning strip, 5-dispersing piece, 51 -Chip body, 511-notch, 52-central axis, 6-workpiece.

【Detailed ways】

Referring to Fig. 1, Fig. 2 and Fig. 3, a fixture that can avoid the deformation of the workpiece of the present invention includes a support table 1, an electric stop bar 2, a limit aid 3 and a controller, and the two groups of the electric stop bars 2 are installed respectively. On the support table 1 , the electric barrier 2 includes a barrier body 25 and a driver. The barrier bodies 25 of the two groups of the electric barrier 2 are driven by the driver to move closer to or away from each other, so as to clamp or release the barriers located at For the workpiece 6 between the adjacent surfaces, several sets of the limiting aids 3 are respectively installed on the retaining bar body 25. The fixing block 34 and the fastening plate 35, the positioning bolt 31 is screwed on the retaining bar body 25, the support piece 32 is horizontally arranged and one end is rotatably connected to the screw of the positioning bolt 31 and the other end is screwed on the tightening bolt. On the screw of the fastening bolt 33, the fastening block 34 is installed on the bottom end of the screw of the fastening bolt 33 and presses down the top surface of the fastening plate 35, the fastening plate 35 is placed on the workpiece 6, the The controller is electrically connected with the two groups of electric blocking bars 2 respectively.

The center of the top surface of the support table 1 is provided with a boss 11 , the drivers of the two sets of the electric blocking bars 2 are respectively installed outside the boss 11 , and the blocking bar bodies 25 of the two sets of the electric blocking bars 2 are respectively located in the bosses 11 . on stage 11.

The driver includes a motor 21, a lead screw 22, an end plate 23 and a nut 24. The motor 21 and the end plate 23 are oppositely arranged and fixed on the outer edge of the top surface of the support table 1. One end of the lead screw 22 is connected to the motor. The output shaft of 21 is connected and the other end is rotatably connected to the end plate 23 .

The electric blocking bar 2 further includes a guide assembly, the guide assembly includes a sliding block 26 and a sliding rail 27 , the sliding rail 27 is installed outside the boss 11 , and the sliding block 26 is fixed on the other side of the blocking rod body 25 . The bottom surface of one end is slidably connected on the slide rail 27 .

A positioning bar 4 is detachably mounted on the top surface of the boss 11 and on the side edge of the block body 25 that is not provided.

The fastening block 34 is in the shape of an inverted cone or an inverted truncated cone.

The top end of the fastening plate 35 is provided with a notch, and the bottom end of the fastening block 34 is inserted into the notch.

Also includes a dispersing sheet 5, the dispersing sheet 5 includes a sheet body 51 and a central shaft 52, the sheet body 51 is located between the fastening plate 35 and the workpiece 6 and is provided with a gap 511, and the bottom of the central shaft 52 is provided. The ends are fixed at the center of the top surface of the sheet body 51 .

The working process of the present invention:

First, the workpiece 6 is placed between the two positioning bars 4 . Next, the motor 21 drives the screw rod 22 to rotate, so that the screw nut 24 moves back and forth along the screw rod 22 , thereby driving the retaining bar body 25 to move back and forth and clamp the workpiece 6 . Then, the sheet body 51 is placed on the workpiece 6 , and the notch 511 is positioned on the substitute processing area of the workpiece 6 . Then, screw the positioning bolts 31 into the top surface of the retaining bar body 25, and place a suitable size of the fastening plate 35 on the body 51. Next, rotate the support plate 32 to make the fastening bolts 33 in the tight position. On the fixing plate 35, make the position of the tightening block 34 and the notch correspond up and down, and then rotate the tightening bolt 33, so that the tightening block 34 presses down on the tightening plate 35, so that the body 51 of the chip body 51 is moved downward. Press the workpiece 6 down.

After the processing of this area is completed, each of the limiting aids 3 can be released in sequence, and then the central axis 52 can be rotated, so that the notch 511 is aligned with the next area to be processed for processing.

In the present invention, two sets of electric stop bars are arranged, and the body of the stop bar is driven by the driver to approach or move away from each other so as to clamp or release the workpiece between the adjacent surfaces, and then the position of the limit aid is fixed by the positioning bolt, and the support The cooperation between the plate and the fastening bolt drives the fastening block to move up and down, and then under the isolation of the appropriate size fastening plate, the action pressure of the fastening block is dispersed, so as to ensure the clamping effect and effectively prevent the workpiece from being damaged. Pinch injury; through the mutual cooperation of the fastening block and the notch, the fastening plate can be effectively prevented from being accidentally slipped away during the installation process; by setting the chip body with a notch, it can be At the same time, the pressure is further dispersed.

The above-mentioned embodiments are illustrative of the present invention, not limitations of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (8)

1. A fixture that can avoid the deformation of the workpiece is characterized in that: comprising a support table (1), an electric stop bar (2), a limit aid (3) and a controller, two groups of the electric stop bars (2) are respectively installed on the support table (1), the electric blocking bars (2) comprise a blocking bar body (25) and a driver, and the blocking bar bodies (25) of the two groups of the electric blocking bars (2) are respectively driven by the drivers While approaching or moving away from each other to clamp or release the workpiece (6) located between adjacent surfaces, several sets of the limiting aids (3) are respectively installed on the retaining bar body (25). The auxiliary device (3) includes a positioning bolt (31), a support piece (32), a fastening bolt (33), a fastening block (34) and a fastening plate (35), and the positioning bolt (31) is threadedly connected to the stopper. On the strip body (25), the support piece (32) is arranged horizontally, and one end is rotatably connected to the screw rod of the positioning bolt (31) and the other end is threadedly connected to the screw rod of the fastening bolt (33). The fixing block (34) is installed on the bottom end of the screw of the fastening bolt (33) and presses down the top surface of the fastening plate (35), the fastening plate (35) is placed on the workpiece (6), and the fastening plate (35) is placed on the workpiece (6). The controller is respectively electrically connected with the two groups of electric blocking bars (2). 2. A fixture that can avoid workpiece deformation according to claim 1, characterized in that: a boss (11) is provided in the center of the top surface of the support table (1), and two sets of the electric stop bars (2) ) drivers are respectively installed outside the bosses (11), and the bar bodies (25) of the two groups of the electric barriers (2) are respectively located on the bosses (11). 3. The fixture as claimed in claim 2, characterized in that: the driver comprises a motor (21), a screw (22), an end plate (23) and a screw nut (24), so The motor (21) and the end plate (23) are oppositely arranged and fixed on the outer edge of the top surface of the support table (1), one end of the screw rod (22) is connected with the output shaft of the motor (21) and the other end can be It is rotatably connected at the end plate (23), the nut (24) is threadedly connected to the threaded section of the lead screw (22), and one end of the retaining bar body (25) is fixed on the nut (24). 4. A fixture that can avoid deformation of the workpiece according to claim 3, characterized in that: the electric stop bar (2) further comprises a guide assembly, and the guide assembly comprises a slider (26) and a slide rail (27) ), the sliding rail (27) is installed outside the boss (11), and the sliding block (26) is fixed on the bottom surface of the other end of the block body (25) and is slidably connected on the sliding rail (27). 5. A fixture capable of avoiding workpiece deformation as claimed in claim 4, characterized in that: the top surface of the boss (11) is detachably mounted on the side of the body (25) without the retaining bar. Positioning bar (4). 6 . The fixture capable of avoiding deformation of the workpiece according to claim 1 , wherein the fastening block ( 34 ) is in the shape of an inverted cone or an inverted truncated cone. 7 . 7. The fixture as claimed in claim 6, wherein the top end of the fastening plate (35) is provided with a notch, and the bottom end of the fastening block (34) is inserted into the notch in the mouth. 8. A kind of fixture that can avoid workpiece deformation according to any one of claims 1 to 7, characterized in that: it also comprises a dispersing sheet (5), and the dispersing sheet (5) comprises a sheet body (51) and the central shaft (52), the sheet body (51) is located between the fastening plate (35) and the workpiece (6) and is provided with a gap (511), and the bottom end of the central shaft (52) is fixed on the sheet The center of the top surface of the body body (51).

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