CN114346928A - Auxiliary limiting stopper for fixture - Google Patents

Abstract

The invention discloses an auxiliary stopper for a clamp, comprising a positioning bolt, a supporting piece, a fastening bolt, a fastening block and a fastening plate. The other end is screwed on the screw rod of the fastening bolt, and the fastening block is installed on the bottom end of the screw rod of the fastening bolt and presses the top surface of the fastening plate downward. The present invention fixes the position of the limiter through the positioning bolt, uses the cooperation between the support sheet and the fastening bolt to drive the fastening block to move up and down, and then disperses the action pressure of the end head under the isolation of the appropriate size fastening plate , so as to effectively prevent the workpiece from being pinched while ensuring the clamping effect.

Description

Auxiliary limiter for fixture

【Technical field】

The invention relates to the technical field of clamps, in particular to the technical field of an auxiliary stopper for clamps.

【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 an auxiliary stopper for a clamp, which can effectively prevent the workpiece from being clamped while ensuring the clamping effect.

In order to achieve the above purpose, the present invention proposes an auxiliary stopper for a clamp, which includes a positioning bolt, a supporting piece, a fastening bolt, a fastening block and a fastening plate. The threaded rod of the bolt is screwed on the other end of the threaded rod of the fastening bolt, and the fastening block is mounted on the bottom end of the threaded rod of the fastening bolt and presses the top surface of the fastening plate downward.

Preferably, the fastening block includes an end head, a plug and a spring, the bottom end of the screw rod of the fastening bolt is provided with a blind hole, the top end of the plug is provided with a protruding strip extending into the blind hole, the plug The bottom end of the spring is rotatably connected to the top end of the end head, the spring is sleeved outside the protruding strip, and the top and bottom ends of the spring are respectively connected with the end surface of the blind hole and the top surface of the main body of the plug.

Preferably, the end head is in the shape of an inverted cone or an inverted truncated frustum.

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

Preferably, the clamping block is polygonal, and the shape of the notch is adapted to the shape of the clamping block.

Preferably, at least one of the outer surface of the block and the inner wall of the notch is provided with rough lines.

Preferably, the gap between the protruding strip and the blind hole is slightly larger than the diameter of the cross section of the spring wire body of the spring.

Preferably, it also includes a screw driver and a controller. The screw driver includes a nut, a gear and a motor. Both the nut and the gear can be rotatably connected to the support sheet. The outer wall of the nut is provided with tooth patterns and is connected with the gear. The motor is installed on the support sheet and drives the gear to rotate, the screw rod of the fastening bolt is threadedly connected with the nut, and the screw driver is electrically connected with the controller.

Preferably, a thickened portion is provided where the support sheet is mounted with the nut.

Preferably, a pressure sensor is installed in the fastening plate, and the pressure sensor is electrically connected to the controller.

Beneficial effects of the present invention: the present invention uses the positioning bolt to fix the position of the stopper, utilizes the cooperation between the support sheet and the fastening bolt to drive the fastening block to move up and down, and then under the isolation of the appropriate size of the fastening plate, Disperse the pressure of the end head, so as to ensure the clamping effect while effectively preventing the workpiece from being pinched; by arranging a plug and a spring between the screw and the end of the fastening bolt, the elastic force can be used to realize the downward pressure of the fastening plate , and form a certain deformation space on the upper and lower range of the fastening plate to further avoid defects on the surface of the workpiece, and the deformation space can be adjusted according to the degree of contraction of the spring; through the mutual cooperation of the clamping block and the notch, the fastening can be effectively avoided. During the installation process, the plate is accidentally forced to be slipped away; by setting the screw driver to form a nut, a gear and a motor, the pressing distance of the fastening bolt can be adjusted by controlling the number of turns of the nut, so as to precisely control the clamping force ; By installing a pressure sensor in the fastening plate, the force of the fastening plate can be fed back in real time, and then the force of the workpiece can be obtained to avoid the occurrence of over-tightening.

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 the installation schematic diagram of the first embodiment of the present invention;

2 is a front view of Embodiment 1 of the present invention;

Fig. 3 is the front view of the fastening bolt and the fastening block of the first embodiment of the present invention after assembly;

4 is a front cross-sectional view of the fastening bolt and the fastening block after assembly according to the first embodiment of the present invention;

Fig. 5 is the bottom view of the terminal of the first embodiment of the present invention;

FIG. 6 is a half cross-sectional view of the second embodiment of the present invention.

In the picture: 1-Workpiece, 2-Baffle plate, 3-Auxiliary stopper for workpiece fixture, 31-Locating bolt, 32-Support piece, 33-Tightening bolt, 331-Blind hole, 34-Tightening block, 341 -End, 3411-Clamp, 342-Plug, 3421-Strip, 343-Spring, 35-Tightening plate, 36-Screw driver, 361-Nut, 362-Gear, 363-Motor, 37-Pressure sensor.

【Detailed ways】

Example 1:

Referring to FIGS. 1 to 5 , an auxiliary stopper for a clamp of the present invention includes a positioning bolt 31 , a supporting piece 32 , a fastening bolt 33 , a fastening block 34 and a fastening plate 35 , and the supporting 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 fastening block 34 is installed on the bottom end of the screw rod of the fastening bolt 33 and presses the lower end of the fastening plate 35 downward. top.

The fastening block 34 includes an end 341, a plug 342 and a spring 343. The bottom end of the screw of the fastening bolt 33 is provided with a blind hole 331, and the top end of the plug 342 is provided with a protrusion extending into the blind hole 331. bar 3421, the bottom end of the plug 342 is rotatably connected to the top end of the end head 341, the spring 343 is sleeved outside the protruding bar 3421, the top end and the bottom end of the spring 343 are respectively connected with the end surface and the end face of the blind hole 331. The top surface of the main body of the plug 342 is connected.

The end head 341 is in the shape of an inverted cone or an inverted truncated cone.

The bottom end of the end head 341 is provided with a blocking block 3411 , and the top end of the fastening plate 35 is provided with a notch, and the blocking block 3411 is inserted into the notch.

The clamping block 3411 is polygonal, and the shape of the notch is adapted to the shape of the clamping block.

At least one of the outer surface of the block 3411 and the inner wall of the notch is provided with rough lines.

The gap between the protruding strip 3421 and the blind hole 331 is slightly larger than the diameter of the cross section of the spring wire body of the spring 343 .

The working process of the present invention:

During the installation process, screw the positioning bolts 31 into the top surface of the baffle plate 2 on the side of the workpiece 1 first. Next, place a suitable size of the fastening plate 35 on the workpiece 1, and then rotate the support piece 32 to make the fastening bolt 33 on the fastening plate 35, and make the position of the clamping block 3411 and the notch correspond up and down. Then, the tightening bolt 33 is rotated, so that the protruding strip 3421 further extends into the blind hole 331 , forcing the spring 343 to contract, and pressing the end 341 downward against the tightening plate 35 .

Embodiment 2:

1 to 6, the screw driver 36 and the controller are also included. The screw driver 36 includes a nut 361, a gear 362 and a motor 363. Both the nut 361 and the gear 362 are rotatably connected to the support piece 32, so The outer wall of the nut 361 is provided with tooth patterns and meshes with the gear 362. The motor 363 is mounted on the support sheet 32 and drives the gear 362 to rotate. The screw driver 36 is electrically connected to the controller.

A thickened portion 321 is provided on the support piece 32 where the nut 361 is installed.

A pressure sensor 37 is installed in the fastening plate 35, and the pressure sensor 37 is electrically connected to the controller.

Others are the same as in Embodiment 1.

When the clamping block 341 extends into the notch, the motor 363 can be directly used to drive the gear 362 to rotate a certain number of turns, so that the nut 361 can be used to move the fastening bolt 33 downward for a certain distance. During this period, the pressure sensor 37 can also measure the pressure in real time.

The present invention fixes the position of the stopper through the positioning bolts, utilizes the cooperation between the support sheet and the tightening bolts to drive the tightening block to move up and down, and then disperses the action pressure of the end head under the isolation of the tightening plate of suitable size , so as to ensure the clamping effect while effectively preventing the workpiece from being pinched; by arranging a plug and a spring between the screw and the end of the fastening bolt, the elastic force is used to realize the pressing down of the fastening plate, and the fastening plate is A certain deformation space is formed in the upper and lower ranges to further avoid defects on the surface of the workpiece, and the deformation space can be adjusted according to the degree of contraction of the spring; through the mutual cooperation of the clamping block and the notch, the fastening plate can be effectively avoided during the installation process. Accidental force is slipped away; by setting the nut, gear and motor to form a screw driver, the pressing distance of the fastening bolt can be adjusted by controlling the number of turns of the nut, so as to precisely control the clamping force; A pressure sensor is installed in the middle, which can feedback the force of the fastening plate in real time, and then obtain the force of the workpiece to avoid the occurrence of over-tightening.

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 (10)

1. The utility model provides an anchor clamps are with supplementary stopper which characterized in that: including positioning bolt (31), backing sheet (32), fastening bolt (33), fastening block (34) and mounting plate (35), backing sheet (32) level sets up and one end rotatable coupling on positioning bolt's (31) screw rod and other end threaded connection is on fastening bolt's (33) screw rod, the top surface at the screw rod bottom of fastening bolt (33) and oppression fastening plate (35) down is installed in fastening block (34).

2. An auxiliary stopper for a jig as claimed in claim 1, wherein: the fastening block (34) comprises an end head (341), a plug (342) and a spring (343), a blind hole (331) is formed in the bottom end of a screw rod of the fastening bolt (33), a protruding strip (3421) extending into the blind hole (331) is formed in the top end of the plug (342), the bottom end of the plug (342) is rotatably connected to the top end of the end head (341), the spring (343) is sleeved outside the protruding strip (3421), and the top end and the bottom end of the spring (343) are connected with the end face of the blind hole (331) and the top face of a main body of the plug (342) respectively.

3. An auxiliary stopper for a jig as claimed in claim 2, wherein: the end head (341) is in the shape of an inverted cone or an inverted truncated cone.

4. An auxiliary stopper for a jig as claimed in claim 3, wherein: the bottom end of the end head (341) is provided with a clamping block (3411), the top end of the fastening plate (35) is provided with a notch, and the clamping block (3411) is inserted into the notch.

5. An auxiliary stopper for a jig as set forth in claim 4, wherein: the fixture block (3411) is polygonal, and the shape of the notch is matched with that of the fixture block.

6. An auxiliary stopper for a jig as set forth in claim 5, wherein: at least one of the outer surface of the fixture block (3411) and the inner wall of the notch is provided with a rough texture.

7. An auxiliary stopper for a jig as claimed in claim 2, wherein: the clearance between the convex strip (3421) and the blind hole (331) is slightly larger than the diameter of the cross section of the spring wire body of the spring (343).

8. An auxiliary stopper for a jig as defined in any one of claims 1 to 7, wherein: the screw driver (36) comprises a nut (361), a gear (362) and a motor (363), the nut (361) and the gear (362) can be rotatably connected into the supporting piece (32), the outer wall of the nut (361) is provided with insections and meshed with the gear (362), the motor (363) is installed on the supporting piece (32) and drives the gear (362) to rotate, a screw of the fastening bolt (33) is in threaded connection with the nut (361), and the screw driver (36) is electrically connected with the controller.

9. An auxiliary stopper for a jig as claimed in claim 8, wherein: the supporting sheet (32) is provided with a thickening part (321) at the position where the nut (361) is installed.

10. An auxiliary stopper for a jig as claimed in claim 8, wherein: and a pressure sensor (37) is installed in the fastening plate (35), and the pressure sensor (37) is electrically connected with the controller.

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