CN217833409U - Limiting mechanism - Google Patents

Abstract

The utility model discloses a stop gear relates to frock clamp technical field. This stop gear includes: the mounting frame is provided with a first mounting hole, the limiting assembly is provided with a connecting piece and a limiting seat, the connecting piece is arranged at the first end of the limiting seat, at least part of the connecting piece is positioned in the first mounting hole, and the connecting piece is in clearance fit with the first mounting hole; the elastic piece is respectively connected with the limiting assembly and the mounting frame, and the elastic piece can drive the first end of the limiting seat to stop against the mounting frame; the pressing rod is arranged on the limiting seat and is in sliding fit with the limiting seat, the first end of the pressing rod is used for stopping and limiting a processed workpiece, the second end of the pressing rod is connected with the first driving piece, and the first driving piece can drive the pressing rod to slide relative to the limiting seat. The problem that a tool clamp for fixing a workpiece is complex in operation and not beneficial to automatic production in the prior art can be solved by the scheme.

Description

Limiting mechanism

Technical Field

The utility model relates to a frock clamp technical field especially relates to a stop gear.

Background

In the field of automatic processing or assembly, parts related to products often need to be fixed and limited temporarily. Because the product has the condition of nonuniform size, the fixed and limiting positions need to be adapted according to the difference of the product size.

In the prior art, in order to fix a workpiece, the workpiece is generally limited in a form of a manual bolt or a pressure plate. Although the length of screwing the bolt can be controlled to adapt to workpieces of different sizes, the operation is complicated in a bolt or pressure plate mode, the efficiency of fixing the workpieces is low, and the automatic production is not facilitated in a bolt or pressure plate mode.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a stop gear to solve the complicated problem that is unfavorable for automated production of frock clamp operation that is used for the work piece to fix among the prior art.

In order to solve the above problem, the utility model adopts the following technical scheme:

the limiting mechanism of the utility model comprises a mounting rack, a limiting component, an elastic component, a pressure lever and a first driving component,

the mounting frame is provided with a first mounting hole,

the limiting assembly is provided with a connecting piece and a limiting seat, the connecting piece is arranged at the first end of the limiting seat, at least part of the connecting piece is positioned in the first mounting hole, and the connecting piece is in clearance fit with the first mounting hole;

the elastic piece is respectively connected with the limiting assembly and the mounting frame, and the elastic piece can drive the first end of the limiting seat to stop against the mounting frame;

the pressing rod is arranged on the limiting seat and is in sliding fit with the limiting seat, the first end of the pressing rod is used for stopping and supporting a limited machined workpiece, the second end of the pressing rod is connected with the first driving piece, and the first driving piece can drive the pressing rod to slide relative to the limiting seat.

The utility model discloses a technical scheme can reach following beneficial effect:

the embodiment of the utility model discloses among the stop gear, connecting piece and first mounting hole clearance fit, and the first end that the elastic component can drive spacing seat ends in the mounting bracket. Therefore, under the condition that the pressure rod is subjected to acting force along the radial direction of the first mounting hole, the pressure rod can drive the limiting assembly to radially deviate along the first mounting hole, and then the limiting mechanism can conduct floating compression on the machined workpiece. That is to say, in the process that the pressing rod limits the processed workpiece in a stopping manner, the acting force between the pressing rod and the processed workpiece can enable the pressing rod to be aligned with the processed workpiece, so that the automatic calibration of the pressing rod and the processed workpiece is realized, the difficulty in limiting the processed workpiece in a stopping manner is reduced, and the automatic production is facilitated.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a partial cross-sectional view of a spacing mechanism according to some alternative embodiments of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1;

fig. 4 is a schematic view of a spacing mechanism according to some alternative embodiments of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a schematic view of a compression bar according to some alternative embodiments of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6;

fig. 8 is a schematic view of a second limiting member according to some alternative embodiments of the present invention;

fig. 9 is a schematic view of a second position-limiting element according to some alternative embodiments of the present invention;

fig. 10 is a schematic view of a second position of a second limiting element according to some alternative embodiments of the present invention;

fig. 11 is a schematic view of an assembly between a mounting frame and a limiting component according to some alternative embodiments of the present invention.

Description of the reference numerals: 100-a mounting frame; 110-a first mounting hole; 111-a first bore section; 112-a second bore section; 120-a first mounting plate; 130-a second mounting plate; 140-a support frame; 200-a stop assembly; 210-a connector; 220-a limiting seat; 221-a first limit stop; 222-a third mounting hole; 230-a second stop; 231-a second limiting surface; 232-a second limiting part; 240-a second drive member; 250-a sliding sleeve; 300-an elastic member; 400-a pressure lever; 410-a first restraint slot; 420-a first limiting part; 421-a first limit surface; 500-a first drive member; 600-a workpiece to be processed; 700-floating joint.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following description will be given with reference to the embodiments of the present invention and the accompanying drawings, in which the technical solution of the present invention is clearly and completely described. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to fig. 1 to 11.

In some embodiments of the present invention, the limiting mechanism includes a mounting frame 100, a limiting assembly 200, an elastic member 300, a pressing rod 400 and a first driving member 500. The mounting bracket 100 is an exemplary basic structure, and may provide a mounting base for other components, such as the first driving member 500, the limiting assembly 200, and the elastic member 300.

Referring to fig. 1 and 2, the mounting block 100 has a first mounting hole 110. The spacing assembly 200 has a connector 210 and a spacing block 220. The connecting element 210 is disposed at a first end of the limiting base 220, at least a portion of the connecting element 210 is disposed in the first mounting hole 110, and the connecting element 210 is in clearance fit with the first mounting hole 110. The elastic member 300 is connected to the position-limiting assembly 200 and the mounting frame 100, and the elastic member 300 can drive the first end of the position-limiting seat 220 to abut against the mounting frame 100. The pressing rod 400 is disposed on the limiting seat 220, and the pressing rod 400 is slidably engaged with the limiting seat 220, a first end of the pressing rod 400 is used for stopping and limiting the processed workpiece 600, a second end of the pressing rod 400 is connected to the first driving member 500, and the first driving member 500 can drive the pressing rod 400 to slide relative to the limiting seat 220.

In the above embodiment, the connecting member 210 is in clearance fit with the first mounting hole 110, that is, a gap is formed between an outer side wall of a portion of the connecting member 210 located in the first mounting hole 110 and an inner side wall of the first mounting hole 110, so that the connecting member 210 can move relative to the mounting frame 100. The position-limiting base 220 is connected to the connecting member 210, so that the position-limiting base 220 and the connecting member 210 both move relative to the mounting frame 100.

The elastic member 300 is connected to the position-limiting assembly 200 and the mounting bracket 100, respectively, and the elastic member 300 can drive the first end of the position-limiting base 220 to abut against the mounting bracket 100, so that the position-limiting assembly 200 is assembled with the mounting bracket 100 in a floating manner, i.e., the position-limiting assembly 200 can move along the radial direction of the first mounting hole 110 relative to the mounting bracket 100. Therefore, when the pressing rod 400 is subjected to a force along the radial direction of the first mounting hole 110, the pressing rod 400 transmits the force to the position-limiting seat 220, so that the position-limiting seat 220 can move in the radial direction of the first mounting hole 110 relative to the mounting frame 100. The scheme not only can adapt to the processed workpieces 600 with different sizes, but also can realize the automatic alignment of the pressure lever 400 and the processed workpieces 600 by utilizing the floating assembly between the limiting assembly 200 and the mounting rack 100.

In some alternative embodiments, the limiting mechanism is used to fix the workpiece 600 to be processed, which has a fixing hole or a fixing groove, for example: fuel injector sleeve, water jacket of engine. Specifically, in the process of limiting the workpiece 600 by the limiting mechanism, at least a portion of the first end of the pressing rod 400 can enter the fixing hole or the fixing groove along the inner sidewall of the fixing hole or the fixing groove of the workpiece 600. Therefore, in the case that the press rod 400 is not aligned with the workpiece 600 to be processed, a force in the radial direction of the press rod 400 is generated between the press rod 400 and the workpiece 600 to be processed, so that the force applied by the press rod 400 on the limiting seat 220 has a force in the radial direction of the first mounting hole 110, thereby achieving the radial deviation of the limiting assembly 200 relative to the mounting frame 100 along the first mounting hole 110 until the first end of the press rod 400 is aligned with the fixing hole or the fixing groove in the workpiece 600 to be processed.

Referring to fig. 1 and 4, in some alternative embodiments, mount 100 includes a first mount plate 120. Illustratively, the first mounting hole 110 opens into the first mounting plate 120. Alternatively, the first mounting holes 110 penetrate the first mounting plate 120 from the first side surface of the first mounting plate 120 to the second side surface of the first mounting plate 120. Illustratively, the retaining bracket 220 is located on a first side of the first mounting plate 120, and the connecting member 210 extends through the first mounting plate 120 via the first mounting hole 110. Optionally, at least a portion of the connector 210 protrudes from the second side surface of the first mounting plate 120. Further optionally, the first end of the elastic member 300 abuts against the second side surface of the first mounting plate 120; the second end of the elastic member 300 is connected to an end of the connecting member 210 away from the stopper seat 220. Further optionally, the elastic element 300 is in a compressed state, so that the elastic force generated by the elastic element 300 can drive the first end of the stopper 220 to abut against the first side surface of the first mounting plate 120.

In the above embodiment, the position-limiting seat 220 can be stopped against the first side of the first mounting plate 120 by the elastic member 300. Moreover, under the condition that the limiting seat 220 receives the radial acting force along the first mounting hole 110, the limiting seat 220 drives the connecting element 210, so that the connecting element 210 acts on the elastic element 300, and the elastic element 300 is further compressed, so that the limiting seat 220 can deviate relative to the first mounting plate 120, and the floating connection of the limiting assembly 200 relative to the first mounting plate 120 is realized.

In a further alternative embodiment, the mounting bracket 100 has a plurality of first mounting holes 110. The spacing assembly 200 has a plurality of connectors 210. Illustratively, the connectors 210 are disposed in one-to-one correspondence with the first mounting holes 110. Further optionally, the connectors 210 are symmetrically arranged.

In the above embodiment, the plurality of connectors 210 in the position-limiting assembly 200 are in clearance fit with the plurality of first mounting holes 110 in the mounting block 100, which is beneficial to improving the stability of the assembly between the position-limiting assembly 200 and the mounting block 100, and is also beneficial to improving the balance of forces applied to all positions of the position-limiting assembly 200.

In some alternative embodiments, the first driving member 500 is disposed on the mounting frame 100. Illustratively, mount 100 further includes a second mounting plate 130 and a support bracket 140. The second mounting plate 130 may be disposed on a second side of the first mounting plate 120. Referring to fig. 1 and 4, the second mounting plate 130 may be disposed in parallel with the first mounting plate 120. The support frame 140 is disposed between the first mounting plate 120 and the second mounting plate 130, and two ends of the support frame 140 are respectively connected to the first mounting plate 120 and the second mounting plate 130. In an alternative embodiment, the number of the support frames 140 is at least two, and the support frames 140 are symmetrically disposed between the first mounting plate 120 and the second mounting plate 130. Further optionally, the first mounting plate 120 is further provided with an avoiding hole, the avoiding hole is parallel to the first mounting hole 110, and the avoiding hole penetrates through the first mounting plate 120, so that the first driving member 500 and/or the pressing rod 400 can penetrate through the first mounting plate 120 through the avoiding hole and be connected.

In some alternative embodiments, as shown in fig. 1, 2 and 11, the first mounting hole 110 includes a first hole segment 111 and a second hole segment 112. The first hole section 111 is communicated with the second hole section 112, and the second hole section 112 is a section close to the position limiting assembly 200. The aperture of the first hole section 111 is larger than the aperture of the second hole section 112, at least a portion of the elastic member 300 is located in the first hole section 111, the first end of the elastic member 300 is stopped at the connection between the first hole section 111 and the second hole section 112, and the second end of the elastic member 300 is connected to the connecting member 210. Optionally, one end of the connecting element 210, which is away from the first end of the limiting seat 220, has a limiting portion, and the second end of the elastic element 300 abuts against the limiting portion, so as to connect the elastic element 300 and the connecting element 210.

In the above embodiment, at least a portion of the elastic member 300 may be hidden in the first mounting hole 110, which not only improves the stability of the assembly of the elastic member 300 with respect to the mounting bracket 100, but also is beneficial to protecting the elastic member 300. Specifically, in the process that the limiting assembly 200 deviates from the mounting frame 100, the elastic member 300 can be abutted against the inner side wall of the first mounting hole 110, that is, the inner side wall of the first hole section 111, so as to prevent the elastic member 300 from sliding relative to the mounting frame 100, reduce the radial stress of the elastic member 300 on the first mounting hole 110, and further be beneficial to protecting the elastic member 300.

Alternatively, the elastic member 300 may be a coil spring. Illustratively, a coil spring may be sleeved on the connecting member 210. For example, the position-limiting part may be an annular protrusion disposed on an outer sidewall of one end of the connecting member 210 far from the position-limiting seat 220, so that the coil spring is connected to the connecting member 210 by being stopped on the annular protrusion. Alternatively, the connector 210 may be a screw. Specifically, the screw rod is sleeved with a coil spring, one end of the coil spring abuts against a nut in the screw, and the other end of the coil spring abuts against the mounting bracket 100. Further optionally, the connecting member 210 may be in threaded connection with the limiting seat 220, so that the length of the connecting member 210 protruding out of the limiting seat 220 may be adjusted to adjust the magnitude of the acting force of the driving limiting seat 220 against the mounting block 100.

Referring to fig. 1, the stopper seat 220 has a second mounting hole, at least a portion of the pressing rod 400 is located in the second mounting hole, and the pressing rod 400 is slidably engaged with the second mounting hole.

In some alternative embodiments, the first driving member 500 is disposed on the mounting frame 100, the second end of the pressing rod 400 penetrates through the limiting seat 220 and is connected to the first driving member 500, and the first end of the pressing rod 400 is used for stopping and limiting the workpiece 600 to be processed.

In the above embodiment, not only the sliding fit between the pressing rod 400 and the limiting seat 220 can be realized, but also the second mounting hole can be used for providing a guiding function for the pressing rod 400, so as to prevent the direction of the acting force of the pressing rod 400 from being fixed in the process of pressing the processed workpiece 600.

In a further alternative embodiment, the opening direction of the second mounting hole coincides with the opening direction of the first mounting hole 110, so that the axial direction of the strut 400 is parallel to the axial direction of the first mounting hole 110. This embodiment is beneficial to prevent the spacing assembly 200 from being offset relative to the mounting bracket 100 upon actuation of the first driving member 500.

In some alternative embodiments, the sliding sleeves 250 are respectively disposed at two ends of the second mounting hole, and the pressing rod 400 is slidably engaged with the sliding sleeves 250. In this embodiment, the sliding sleeve 250 is beneficial to reduce the frictional resistance of the compression rod 400, and the sliding sleeve 250 is beneficial to reduce the manufacturing cost of the limiting mechanism. In addition, the sliding sleeve 250 is also beneficial to prevent dust from entering the gap between the inner side wall of the second mounting hole and the outer side wall of the pressing rod 400.

In some alternative embodiments, one of the limiting seat 220 and the pressing rod 400 is provided with a first limiting member 221, and the other one has a first limiting groove 410. For example, the first position-limiting member 221 may be disposed on the position-limiting base 220, and the first position-limiting groove 410 may be disposed on the pressing rod 400. Further optionally, the first limiting groove 410 is disposed along the axial direction of the pressing rod 400, at least a portion of the first limiting member 221 is located in the first limiting groove 410, and the first limiting member 221 is slidably engaged with the first limiting groove 410.

In the above embodiment, the first position-limiting member 221 is engaged with the first position-limiting groove 410, which is beneficial to prevent the pressing rod 400 from rotating relative to the position-limiting base 220.

For example, the first position-limiting member 221 may be a protrusion disposed on the position-limiting base 220, so that the protrusion is at least partially disposed in the first position-limiting groove 410 to limit the rotation of the pressing rod 400 relative to the position-limiting base 220.

In other alternative embodiments, the first position-limiting member 221 may be a screw disposed on the position-limiting base 220. Illustratively, a threaded hole is formed in the limiting seat 220, and the threaded hole penetrates through a side wall of the limiting seat 220 corresponding to the second mounting hole, and the threaded hole is communicated with the second mounting hole. Specifically, the screw is installed in the threaded hole, and at least a portion of the screw protrudes out of the inner side wall of the second installation hole, so that at least a portion of the screw can be located in the first limiting groove 410, and the rotation of the compression bar 400 relative to the limiting seat 220 can be limited by the screw.

In the above embodiment, the rotation of the pressing rod 400 relative to the limiting seat 220 can be limited by the screw, and the screw can be moved out of the first limiting groove 410 by rotating the screw in the process of not limiting the rotation of the pressing rod 400 relative to the limiting seat 220, so that the pressing rod 400 can rotate relative to the limiting seat 220.

Referring to fig. 1, 3 and 6, the pressing rod 400 has a first position-limiting portion 420, and the first position-limiting portion 420 is located between the first end and the second end of the pressing rod 400. Further optionally, the limiting assembly 200 further includes a second limiting member 230 and a second driving member 240, wherein the second limiting member 230 is slidably engaged with the limiting base 220. The second driving element 240 is connected to the second position-limiting element 230, and the second driving element 240 can drive the second position-limiting element 230 to move between the first position and the second position relative to the position-limiting base 220.

Referring to fig. 9, when the second limiting member 230 is located at the first position relative to the limiting base 220, at least a portion of the second limiting member 230 abuts against a side of the first limiting portion 420 away from the first end of the pressing rod 400. Referring to fig. 10, when the second limiting member 230 is located at a second position relative to the limiting base 220, the second limiting member 230 is separated from the first limiting portion 420.

In the above embodiment, the second position-limiting member 230 can be phase-matched with the first position-limiting portion 420 to limit the movement of the pressing rod 400 toward the first driving member 500. Therefore, after the pressing rod 400 compresses the workpiece 600 to be processed, the second limiting member 230 can be in limiting fit with the first limiting portion 420 in the pressing rod 400, so that the acting force applied to the pressing rod 400 is transmitted to the mounting frame 100, and the load applied to the pressing rod 400 by the first driving member 500 can be cancelled, thereby not only achieving the purpose of protecting the first driving member 500, but also being beneficial to reducing energy consumption. Moreover, after the first driving member 500 drives the pressing rod 400 to press the workpiece 600 to be processed, the second limiting member 230 is in limiting fit with the first limiting portion 420 in the pressing rod 400, so that rigid connection between the pressing rod 400 and the mounting block 100 can be realized, and further improvement of stability of the workpiece 600 to be processed in a processing process and improvement of processing precision are facilitated.

Alternatively, the first driving member 500 may be a hydraulic cylinder, an air cylinder, a lead screw mechanism, and/or the like, and for this reason, the present embodiment does not limit the specific type of the first driving member 500.

In an alternative embodiment, the first position-limiting portion 420 has a first position-limiting surface 421, the first position-limiting surface 421 is located on a side of the first position-limiting portion 420 away from the first end of the pressing rod 400, and the first position-limiting surface 421 is disposed obliquely with respect to the axial direction of the pressing rod 400.

In the above embodiment, not only the limiting fit between the second limiting member 230 and the first limiting portion 420 can be realized, but also the position of the second limiting member 230 abutting against the first limiting surface 421 can be adjusted to adapt to the workpieces 600 to be processed with different sizes.

Referring to fig. 3, 7 to 10, the first position-limiting portion 420 may be a second position-limiting groove disposed on the pressing rod 400. The second limiting groove is inclined with respect to the axial direction of the pressing rod 400. For example, one end of the second limiting member 230 is inserted into the second limiting groove from the end of the second limiting groove close to the first end of the pressing rod 400, so that the second limiting member 230 can be stopped against the inner sidewall of the second limiting groove close to the first end of the pressing rod 400, and further the pressing rod 400 is limited from moving toward the first driving member 500.

Referring to fig. 7 to 10, in an alternative embodiment, the second position-limiting member 230 has a second position-limiting surface 231, the second position-limiting surface 231 is parallel to the first position-limiting surface 421, and under the condition that the second position-limiting member 230 is located at the first position relative to the position-limiting base 220, at least a portion of the second position-limiting surface 231 abuts against the first position-limiting surface 421. The embodiment is beneficial to increase the contact area between the second limiting member 230 and the pressing rod 400, avoid the formation of a high pair between the second limiting member 230 and the pressing rod 400, and improve the service life of the second limiting member 230 and the pressing rod 400.

It should be noted that: the two members may be constrained in movement by point, line or surface contact. The combination of points, lines, faces of contact between two members is called a minor element. If the secondary element is a point or a line, the kinematic pair is a high pair.

In an alternative embodiment, the second limiting member 230 is perpendicular to the pressing rod 400, which is beneficial to provide a rigid support for the pressing rod 400 after the pressing rod 400 presses the workpiece 600 to be processed by the second limiting member 230.

In an alternative embodiment, the pressing rod 400 has two first position-limiting portions 420, and the two first position-limiting portions 420 are symmetrically disposed on two sides of the pressing rod 400. For example, the limiting mechanism may include two second limiting members 230.

In some optional embodiments, the two second position-limiting members 230 correspond to the two first position-limiting portions 420 one by one, and the two second position-limiting members 230 can be respectively matched with the corresponding first position-limiting portions 420 in a position-limiting manner. This embodiment is beneficial for improving the balance of forces on both sides of the plunger 400.

Referring to fig. 8, in some alternative embodiments, the second limiting member 230 has two second limiting portions 232, the two second limiting portions 232 are disposed in parallel, when the second limiting member 230 is located at the first position relative to the limiting base 220, the pressing rod 400 is located between the two second limiting portions 232, and the two second limiting portions 232 respectively abut against the two first limiting portions 420 for limiting. In this embodiment, only odd two second limiting portions 232 of the second limiting member 230 can be in limiting fit with the first limiting portions 420 through one second driving member 240, which not only simplifies the structure of the limiting mechanism, but also is beneficial to ensuring the synchronous limiting fit between the second limiting member 230 and the two first limiting portions 420.

Referring to fig. 4, in an alternative embodiment, the limiting base 220 is provided with a third mounting hole 222, and the third mounting hole 222 is communicated with the second mounting hole. Optionally, the third mounting hole 222 is perpendicular to the second mounting hole. For example, the second limiting member 230 is slidably engaged with the third installation hole 222, so that the second limiting member 230 can slide along the third installation hole 222 and at least partially engage with the first limiting portion 420.

The second position-limiting part 232 is located between the first end and the second end of the second position-limiting part 230, and the first end of the second position-limiting part 230 is connected to the second driving part 240. Under the condition that the second position-limiting portion 232 is in position-limiting fit with the first position-limiting portion 420, two ends of the second position-limiting member 230 are in position-limiting fit with the side walls of the position-limiting base 220 located at two sides of the second mounting hole, respectively.

Referring to fig. 1, 3 and 4, in some alternative embodiments, the third mounting hole 222 penetrates through the limiting seat 220, and the third mounting hole 222 penetrates through the second mounting hole. Illustratively, the third mounting hole 222 includes a first section for mounting the second limiting member 230 and a second section for limiting and matching with the second limiting member 230. Optionally, in a case where the limiting mechanism compresses and fixes the workpiece 600 to be processed, the second end of the second limiting member 230 is at least partially located in the second segment and is in limiting fit with the inner sidewall of the second segment in the axial direction of the pressing rod 400. This embodiment is beneficial to the balance of the two ends of the second limiting member 230, and further beneficial to prevent the second limiting member 230 from bending after being stressed.

In an alternative embodiment, the limiting mechanism further comprises a floating joint 700, a first end of the floating joint 700 is connected to the first driving member 500, and a second end of the floating joint 700 is connected to the pressing rod 400. Illustratively, the floating joint 700 may be capable of floating in a radial direction and/or an axial direction of the plunger 400, and thus the stopper assembly 200 may be capable of being shifted in a radial direction of the first mounting hole 110 by deformation of the floating joint 700 in a radial direction of the plunger 400. In addition, the floating joint 700 can float in the axial direction of the pressure rod 400, so that the workpiece is prevented from being damaged due to excessive acting force applied to the workpiece 600 by the pressure rod 400.

The limiting mechanism described in the above embodiment can realize floating connection between the limiting component 200 and the first driving member 500 in the fixing process of the processed workpiece 600, so as to avoid damage of the processed workpiece 600 due to excessive stress, and can also realize rigid limiting of the processed workpiece 600 in the fixing process of the limiting mechanism, so as to avoid looseness of the processed workpiece 600 in the processing process.

The utility model discloses what the key description was in above embodiment is the difference between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, and it is succinct to consider the capable text, then no longer gives details here.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A limiting mechanism is characterized by comprising a mounting rack (100), a limiting component (200), an elastic piece (300), a pressure rod (400) and a first driving piece (500),

the mounting bracket (100) has a first mounting hole (110),

the limiting assembly (200) is provided with a connecting piece (210) and a limiting seat (220), the connecting piece (210) is arranged at the first end of the limiting seat (220), at least part of the connecting piece (210) is positioned in the first mounting hole (110), and the connecting piece (210) is in clearance fit with the first mounting hole (110);

the elastic piece (300) is respectively connected with the limiting component (200) and the mounting frame (100), and the elastic piece (300) can drive the first end of the limiting seat (220) to be abutted against the mounting frame (100);

the pressing rod (400) is arranged on the limiting seat (220), the pressing rod (400) is in sliding fit with the limiting seat (220), the first end of the pressing rod (400) is used for stopping a limiting processed workpiece (600), the second end of the pressing rod (400) is connected with the first driving piece (500), and the first driving piece (500) can drive the pressing rod (400) to slide relative to the limiting seat (220).

2. The spacing mechanism of claim 1, wherein said first mounting aperture (110) comprises a first aperture section (111) and a second aperture section (112), said first aperture section (111) being in communication with said second aperture section (112), and said second aperture section (112) being a section proximate to said spacing assembly (200); the pore diameter of the first pore section (111) is larger than the pore diameter of the second pore section (112),

at least part of the elastic piece (300) is positioned in the first hole section (111), the first end of the elastic piece (300) is stopped against the joint of the first hole section (111) and the second hole section (112), and the second end of the elastic piece (300) is connected with the connecting piece (210).

3. The spacing mechanism of claim 1, wherein said spacing block (220) has a second mounting hole, at least a portion of said strut (400) being located in said second mounting hole, said strut (400) being in sliding engagement with said second mounting hole.

4. The limiting mechanism according to claim 1, wherein one of the limiting base (220) and the pressing rod (400) is provided with a first limiting member (221), the other one of the limiting base and the pressing rod has a first limiting groove (410), the first limiting groove (410) is arranged along the axial direction of the pressing rod (400), at least a part of the first limiting member (221) is located in the first limiting groove (410), and the first limiting member (221) is slidably engaged with the first limiting groove (410).

5. The spacing mechanism according to claim 1, wherein said first driving member (500) is disposed on said mounting frame (100), and a second end of said pressing rod (400) penetrates said spacing seat (220) and is connected to said first driving member (500).

6. The spacing mechanism of claim 1, wherein said plunger (400) has a first spacing portion (420), said first spacing portion (420) being located between a first end and a second end of said plunger (400);

the limiting assembly (200) further comprises a second limiting member (230) and a second driving member (240), the second limiting member (230) is slidably engaged with the limiting seat (220), the second driving member (240) is connected with the second limiting member (230), and the second driving member (240) can drive the second limiting member (230) to move between a first position and a second position relative to the limiting seat (220);

under the condition that the second limiting piece (230) is located at the first position relative to the limiting seat (220), at least part of the second limiting piece (230) abuts against one side, away from the first end of the compression rod (400), of the first limiting part (420);

when the second limiting member (230) is located at the second position relative to the limiting base (220), the second limiting member (230) is separated from the first limiting portion (420).

7. The limiting mechanism according to claim 6, wherein the first limiting portion (420) has a first limiting surface (421), the first limiting surface (421) is located on a side of the first limiting portion (420) away from the first end of the pressing rod (400), and the first limiting surface (421) is arranged obliquely relative to the axial direction of the pressing rod (400).

8. The limiting mechanism according to claim 7, wherein the second limiting member (230) has a second limiting surface (231), the second limiting surface (231) is parallel to the first limiting surface (421), and at least a portion of the second limiting surface (231) abuts against the first limiting surface (421) when the second limiting member (230) is located at the first position relative to the limiting seat (220).

9. The limiting mechanism according to claim 6, wherein the pressing rod (400) has two first limiting portions (420), the two first limiting portions (420) are symmetrically disposed on two sides of the pressing rod (400), the second limiting member (230) has two second limiting portions (232), the two second limiting portions (232) are disposed in parallel,

under the condition that the second limiting piece (230) is located at the first position relative to the limiting seat (220), the pressing rod (400) is located between the two second limiting parts (232), and the two second limiting parts (232) are respectively abutted and limited with the two first limiting parts (420).

10. The spacing mechanism according to any of claims 1-9, characterized in that said spacing mechanism further comprises a floating joint (700), a first end of said floating joint (700) being connected to said first driver (500) and a second end of said floating joint (700) being connected to said strut (400).

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