CN215659788U

CN215659788U - Clamping device

Info

Publication number: CN215659788U
Application number: CN202023103399.6U
Authority: CN
Inventors: 禹青海
Original assignee: Dongguan Xinmeiyang Technology Co ltd
Current assignee: Dongguan Xinmeiyang Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-01-28
Anticipated expiration: 2030-12-21

Abstract

The utility model provides a clamping device, includes the pedestal, arrange in under the pedestal and elastic movement's expansion bracket from top to bottom and through bolt swing joint in a pair of pressure claw subassembly on the expansion bracket, press the claw subassembly to include the balancing weight, certainly the balancing weight extends along horizontal outside and forms depression bar and cover and locate the rubber ring of depression bar free end, the expansion bracket pass through the pin joint portion with balancing weight rotatable coupling, the pin joint portion of expansion bracket is in when the pedestal top, press the claw subassembly to be in the state of lying down, the pin joint portion of expansion bracket is spacing in when the pedestal is internal, press the claw subassembly to be in the state of erectting. This application clamping device is with low costs and easy operation.

Description

Clamping device

Technical Field

The utility model relates to the field of clamps, in particular to a clamping device.

Background

In the processing and detection of metal parts, a clamp is often needed, the clamp firstly fixes a workpiece and then processes or detects the workpiece, and after the operation is finished, the clamp is loosened to take out a product. For example, patent No. 201910434548 to X discloses a clamp, which comprises connecting rods and air cylinders for connecting the connecting rods together, wherein the connecting rods generate an angle difference through the expansion and contraction of the air cylinders, so that clamping jaws press or loosen workpieces. The mechanism of the scheme is complex, a complex connecting rod and a complex cylinder are needed, and the cost is high.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a clamping device with low cost.

For solving above-mentioned technical problem, this application provides a clamping device, include the pedestal, arrange in under the pedestal and elastic movement's expansion bracket from top to bottom and through bolt swing joint in a pair of pressure claw subassembly on the expansion bracket, press the claw subassembly to include the balancing weight, certainly the balancing weight extends along horizontal outside and forms depression bar and cover and locates the rubber ring of depression bar free end, the expansion bracket pass through pin joint portion with balancing weight rotatable coupling, the pin joint portion of expansion bracket is in during the pedestal top, press the claw subassembly to be in the state of lying down, the pin joint portion of expansion bracket is spacing in when the pedestal is internal, press the claw subassembly to be in the state of erectting.

Preferably, the base body comprises a fixed table, a pair of supporting vertical arms formed by downwards extending from two transverse sides of the fixed table and a lifting space arranged below the fixed table and between the pair of supporting vertical arms, and the telescopic frame moves up and down in the lifting space.

Preferably, the telescopic frame comprises a bottom arm formed by extending along the transverse direction and side arms formed by extending upwards from two transverse sides of the bottom arm, the pivoting part is located at free ends of the side arms, and the fixed table penetrates through a through hole formed in the vertical direction and used for the side arms of the telescopic frame to pass through.

Preferably, the horizontal both sides of fixed station are equipped with lets the position portion, let the position portion including sink the portion and be located the holding surface on the fixed station surface of the vertical both sides of portion that sinks, the work piece include along the connecting portion that the horizontal direction extension formed and connect in the horizontal outside of connecting portion and along the vertical arm of the vertical direction extension formation, the downward protrusion in vertical arm bottom is formed with the bulge, vertical arm bottom just is located the vertical outside of bulge is formed with a supporting bench, a supporting bench support in on the holding surface.

Preferably, the fixing table is provided with a positioning pin in the longitudinal direction of the supporting surface to position the longitudinal arm.

Preferably, the through hole on the fixed table is arranged on the transverse inner side of the positioning portion, the upper surface of the fixed table is further provided with an accommodating groove on the transverse inner side of the through hole, a first groove is arranged in the middle of the bottom arm of the telescopic frame, a second groove is formed in the position, corresponding to the first groove, of the bottom surface of the fixed table in an upward concave mode, a spring is clamped between the first groove and the second groove, and the spring provides elastic force for the telescopic frame.

Preferably, the counterweight block comprises a pivot connecting part movably pivoted on the pivoting part of the free end of the side arm through a bolt and a counterweight part formed by extending upwards from the pivot connecting part, at least part of the counterweight part is suspended above the accommodating groove, and under the condition of no resistance, the counterweight part of the counterweight block enables the pressing claw assembly to turn over under the action of gravity and enables part of the counterweight part to turn into the accommodating groove.

Preferably, when the telescopic frame is moved downwards by the elastic force of the spring, the pivoting part and the pivoting connecting part are drawn into the through hole, the pressing claw assembly is turned to the vertical state, and the pressing rod and the rubber ring are pressed and held on the surface of the longitudinal arm of the workpiece.

This application clamping device sets up the balancing weight through setting up an elastic expansion bracket and connecting a rotatable pressure claw subassembly on the expansion bracket on pressing the claw subassembly, reaches through the gravity of balancing weight the elastic force of expansion bracket is pressing from both sides tightly and is relieved and compress tightly light switching, preparation low cost, it is easy and simple to handle.

Drawings

FIG. 1 is a perspective view of a workpiece to be clamped in the clamping device of the present application;

FIG. 2 is a perspective view of the clamping device and workpiece of the present application;

FIG. 3 is an exploded perspective view of the clamping device of the present application;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 5 is a perspective view of the clamping device of the present application in a unclamped state.

The attached drawings are as follows:

-10 a workpiece; a connecting part-11; a longitudinal arm-12; a projection-13; a support table-14; a seat body-20; a fixed table-21; a support vertical arm-22; -a lifting space-23; a relief portion-24; sinker-241; a support surface-242; a containing groove-25; a through-hole-26; a second groove-27; a telescopic frame-30; a bottom arm-31; a first recess-311; a sidearm-32; a pivoting part-321; a shaft hole-322; bolt-323; a spring-33; a pressing claw component-40; a counterweight-41; a pivotal connection-411; a weight-412; a pressure bar-42; a rubber sleeve-43; and a positioning pin-50.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In the present application, the Y direction shown in fig. 1 is the front in the front-rear direction or the longitudinal direction, the X direction is the right in the left-right direction or the lateral direction, and the Z direction is the upper direction in the vertical direction.

Referring to fig. 1, a workpiece 10 to be clamped by the clamping device of the present application includes a connecting portion 11 extending in a transverse direction, a pair of longitudinal arms 12 connected to two ends of the connecting portion 11 in the transverse direction and extending in a longitudinal direction, a protruding portion 13 protruding downward from a bottom surface of the longitudinal arm 12, and a supporting base 14 formed below the longitudinal arm 12 and located at a longitudinal outer side of the protruding portion 13.

As shown in fig. 2 to fig. 5, the clamping device of the present application includes a base 20, an expansion bracket 30 disposed below the base 20 and capable of elastically moving up and down, and a pair of pressing claw assemblies 40 movably connected to the expansion bracket 30 through bolts 323.

The base 20 includes a fixed base 21, a pair of supporting vertical arms 22 extending downward from two lateral sides of the fixed base 21, and a lifting space 23 located between the lower side of the fixed base 21 and the pair of supporting vertical arms 22. The horizontal both sides undercut of fixed station 21 is formed with the portion of stepping down 24, the portion of stepping down 24 is towards horizontal outside opening, the portion of stepping down 24 including the portion of stepping down 241 and be formed on fixed station 21 surface and be located the support face 242 of the vertical both ends of portion of stepping down 241, fixed station 21 is being close to be equipped with a locating pin 50 on the support face 242 at least. Through holes 26 are formed in the fixing base 21 in the upper and lower direction near the inner sides of the sinking portions 241, and downwardly recessed receiving grooves 25 are formed in the inner sides of the pair of through holes 26. A second groove 27 is formed at the bottom of the fixing table 21 and extends upward between the pair of receiving grooves 25.

The telescopic frame 30 includes a bottom arm 31 extending along a transverse direction, side arms 32 extending upward from two transverse ends of the bottom arm 31 and passing through the through holes 26, and a pivot portion 321 disposed at top ends of the side arms 32. The upper surface of the bottom arm 31 is recessed downward to form a first groove 311, and the two lateral sides of the pivoting portion 321 are

The pressing claw assembly 40 includes a weight block 41, a pressing rod 42 formed by extending from the weight block 41, and a rubber sleeve 43 sleeved on a free end of the pressing rod 42. The weight block 41 includes a pivot connection portion 411 and a weight portion 412 formed by extending from the lateral inner side of the pivot connection portion 411, the width of the pivot connection portion 411 is smaller than the width of the weight portion 412, so that when the weight block 41 is in a crimping vertical state, at least a part of the weight portion 412 is suspended above the accommodating groove 25, and the suspended part is larger than the width of the pivot connection portion 411.

The pressing rod 42 is formed by extending from the lateral outer side of the counterweight part 412, and the rubber ring 43 is sleeved at the free end of the pressing rod 42 and pressed on the workpiece 10 downwards. The pivotal connection portion 411 is movably connected to the shaft hole 322 of the pivotal connection portion 321 by a bolt 323. A spring 33 is clamped between the first groove 311 of the telescopic frame 30 and the second groove 27 at the bottom of the fixed table 21.

The working principle of the clamping device is as follows:

firstly, the telescopic frame 30 is pushed upwards and the spring 30 is compressed, so that the pivoting portion 321 of the telescopic frame 30 moves upwards out of the upper portion of the through hole 26, and the weight block 41 of the pressing claw assembly 40 turns inwards and falls into the accommodating groove 25 under the action of the suspended weight portion 412, so that the pressing rod 42 and the rubber ring 43 face upwards, that is, the weight block 41 is in a horizontal state; placing the workpiece 10 above the fixed table 21, wherein the longitudinal arm 12 of the workpiece 10 is erected on the positioning portion 24, the support table 14 of the workpiece 10 is supported on the support surfaces 242 at two longitudinal ends of the positioning portion 24, the positioning pins 50 limit the position of the workpiece 10, and the protruding portion 13 of the workpiece 10 is accommodated in the sinking portion 241; then, the upward pushing force applied to the telescopic frame 30 is released, the telescopic frame 30 moves downward under the elastic restoring force of the spring 33, the pivoting portion 321 of the free end of the side arm 32 moves downward into the through hole 26, the counterweight 41 is turned over against the gravity of the counterweight portion 412 under the pulling of the elastic force to make the counterweight 41 in an upright state, and the pressing rod 42 and the rubber ring 43 are pressed against the upper surface of the longitudinal arm 12 of the workpiece 10 at the same time to realize pressing.

When the workpiece needs to be taken down, the telescopic frame 30 is pushed upwards according to the above.

This application clamping device is through setting up an elastic expansion bracket 30 and connecting a rotatable pressure claw subassembly 40 on expansion bracket 30, sets up balancing weight 41 on the pressure claw subassembly 40, through the gravity of balancing weight 41 and the elastic force of expansion bracket 30 is pressing from both sides tightly and is relieved and compress tightly light switching, preparation low cost, it is easy and simple to handle.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The clamping device is characterized by comprising a base body, a telescopic frame which is arranged below the base body and can elastically move up and down, and a pair of pressing claw assemblies which are movably connected to the telescopic frame through bolts, wherein each pressing claw assembly comprises a balancing weight, a pressing rod and a rubber ring, the pressing rod and the rubber ring are sleeved at the free end of the pressing rod, the telescopic frame is rotatably connected with the balancing weight through a pin joint part, the pressing claw assemblies are in a lying state when the pin joint part of the telescopic frame is positioned above the base body, and the pressing claw assemblies are in a vertical state when the pin joint part of the telescopic frame is limited in the base body.

2. The clamping device as claimed in claim 1, wherein the base comprises a fixed platform, a pair of supporting vertical arms extending downward from two lateral sides of the fixed platform, and a lifting space provided below the fixed platform and between the pair of supporting vertical arms, and the telescopic frame moves up and down in the lifting space.

3. The clamping device as claimed in claim 2, wherein the telescopic frame comprises a bottom arm extending along the transverse direction and side arms extending upwards from two transverse sides of the bottom arm, the pivoting part is located at free ends of the side arms, and the fixed platform is vertically provided with through holes for the side arms of the telescopic frame to pass through.

4. The clamping device as claimed in claim 3, wherein the fixing table is provided with a relief portion at both lateral sides thereof, the relief portion includes a sunken portion and a support surface located on the surface of the fixing table at both longitudinal sides thereof, the workpiece includes a connecting portion extending in the lateral direction and a longitudinal arm connected to the lateral outside of the connecting portion and extending in the longitudinal direction, the longitudinal arm has a protrusion protruding downward from a bottom thereof, and a support platform is formed at the bottom thereof and located at the longitudinal outside of the protrusion, and the support platform is supported on the support surface.

5. A clamping arrangement according to claim 4, characterised in that the fixing table is provided with positioning pins in the longitudinal direction of the support surface for positioning the longitudinal arm.

6. The clamping device as claimed in claim 4, wherein the through hole of the fixed platform is disposed laterally inward of the positioning portion, the upper surface of the fixed platform is further provided with a receiving groove laterally inward of the through hole, a first groove is disposed in the middle of the bottom arm of the telescopic frame, a second groove is formed in the bottom surface of the fixed platform and recessed upward at a position corresponding to the first groove, a spring is sandwiched between the first and second grooves, and the spring provides an elastic force to the telescopic frame.

7. The clamping device as claimed in claim 6, wherein the weight member includes a pivot connecting portion pivotally connected to the pivot portion of the free end of the side arm via a bolt, and a weight portion extending upward from the pivot connecting portion, the weight portion is at least partially suspended above the accommodating slot, and under the condition of no resistance, the weight portion of the weight member makes the pressing claw assembly turn over under the action of gravity and makes part of the weight portion turn into the accommodating slot.

8. The clamping device as claimed in claim 7, wherein when the telescopic frame is moved down by the elastic force of the spring, the pivot joint part and the pivot connection part are pulled into the through hole, the pressing claw component is turned to the vertical state, and the pressing rod and the rubber ring are pressed on the surface of the longitudinal arm of the workpiece.