Elastic positioning structure

Abstract

The utility model belongs to the technical field of positioning mechanisms, and relates to an elastic positioning structure which comprises a mounting block, the upper portion of the mounting block is connected with a pressing block, a piston rod is slidably arranged in a first through hole formed after the mounting block and the pressing block are connected, and the sliding lower limit of the piston rod in the first through hole is limited through a limiting ring. The upper end of the piston rod is connected with the connecting rod, the connecting rod extends to the outer side of the pressing block, and the upper end of the piston rod is limited through a counter bore step at the upper end of the first through hole; a guiding and positioning assembly is arranged between the mounting block and the pressing block, the piston rod penetrates through the guiding and positioning assembly, an inner hole of the guiding and positioning assembly is larger than the outer diameter of the piston rod, and the piston rod can drive the guiding and positioning assembly to horizontally move in the lifting process. According to the positioning structure, a more convenient and accurate positioning structure can be provided in a workpiece blank state, so that the machining precision and the machining qualification rate of workpieces are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of positioning mechanisms and relates to an elastic positioning structure. Background Art

[0002] With the development of intelligent manufacturing industry, the requirements for precision and cost control of parts processing are getting higher and higher, and the requirements for intelligent and convenient clamping of parts are getting higher and higher. Among them, the positioning mechanism is an important part of clamping. With the continuous development of automated production and the continuous upgrading and transformation of non-standard parts, the intelligent design of the positioning mechanism is becoming more and more important and the requirements are getting higher and higher. Summary of the invention

[0003] In view of the above problems, the utility model provides an elastic positioning structure, which can provide a more convenient and accurate positioning structure when the workpiece is in a blank state, thereby improving the machining accuracy and machining qualification rate of the workpiece.

[0004] According to the technical solution of the utility model: an elastic positioning structure, characterized in that it includes a mounting block, the upper part of the mounting block is connected to a pressure block, a piston rod is slidably arranged in a first through hole formed after the mounting block and the pressure block are connected, the lower limit of the sliding of the piston rod in the first through hole is limited by a limit ring, the upper end of the piston rod is connected to a connecting rod, the connecting rod extends to the outside of the pressure block, and the upper end of the piston rod is limited by a countersunk step at the upper end of the first through hole;

[0005] A guide positioning assembly is arranged between the mounting block and the pressing block, the piston rod passes through the guide positioning assembly, and the inner hole of the guide positioning assembly is larger than the outer diameter of the piston rod. The piston rod can drive the guide positioning assembly to move horizontally during the lifting process.

[0006] As a further improvement of the utility model, a coaxially arranged spring is fixed on the limit ring, and a groove is arranged on the bottom surface of the piston rod to achieve cooperation with the spring when the piston rod moves downward.

[0007] As a further improvement of the utility model, an inclined guide groove is provided on the piston rod, a pin is arranged in the guide groove, and the axial outer end of the pin is connected to the guide positioning assembly.

[0008] As a further improvement of the utility model, a dustproof ring is installed at the upper end of the countersunk step of the pressing block, and the connecting rod passes through the dustproof ring.

[0009] As a further improvement of the present invention, the axial outer end of the connecting rod is fastened to the handle.

[0010] As a further improvement of the present invention, the guide and positioning assembly includes a guide block and a positioning block fastened to the outer end of the guide block.

[0011] As a further improvement of the present invention, the inner hole of the guide block forms the inner hole of the guide positioning assembly.

[0012] The technical effects of the utility model are: the use of a handle increases the portability of manual operation; the combination of the oblique groove and the square groove increases the accuracy of positioning, conforms to the ergonomics of up and down operations, and meets the requirements of lateral positioning; the lubrication port and lubrication groove are designed to increase the service life; the positioning structure is easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 for Figure 1 AA section view. DETAILED DESCRIPTION

[0015] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0016] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0017] Figure 1 , 2 The utility model comprises a mounting block 1, a pressure block 2, a piston rod 3, a positioning block 4, a guide block 5, a connecting rod 6, a limiting ring 7, a pin 8, a dust ring 9, a spring 10, a handle 11 and the like.

[0018] like Figure 1 , 2 As shown, the utility model is an elastic positioning structure, including a mounting block 1, the upper part of the mounting block 1 is connected to a pressing block 2, a piston rod 3 is slidably arranged in a first through hole formed after the mounting block 1 and the pressing block 2 are connected, the lower limit of the sliding of the piston rod 3 in the first through hole is limited by a limit ring 7, the upper end of the piston rod 3 is connected to a connecting rod 6, the connecting rod 6 extends to the outside of the pressing block 2, and a handle 11 is fastened to the axial outer end of the connecting rod 6 for easy operation; the upper end of the piston rod 3 is limited by a countersunk step at the upper end of the first through hole. A missing corner portion is provided on the upper part of the pressing block 2 to reduce the weight of the pressing block 2.

[0019] A guide positioning assembly is arranged between the mounting block 1 and the pressing block 2, and the piston rod 3 passes through the guide positioning assembly. The inner hole of the guide positioning assembly is larger than the outer diameter of the piston rod 3, and the piston rod 3 can drive the guide positioning assembly to move horizontally during the lifting process.

[0020] A coaxially arranged spring 10 is fixed on the limiting ring 7, and a groove is arranged on the bottom surface of the piston rod 3 to cooperate with the spring 10 when the piston rod 3 moves downward. During operation, when the piston rod 3 moves downward, the upper end of the spring 10 extends into the groove on the bottom surface of the piston rod 3 to ensure that when the piston rod 3 moves downward to compress the spring 10, the spring 10 can be compressed in the vertical direction without twisting or dislocation.

[0021] An inclined guide groove is provided on the piston rod 3 , in which a pin 8 is arranged, and an axial outer end of the pin 8 is connected to a guide positioning assembly.

[0022] A dust ring 9 is installed at the upper end of the countersunk step of the pressing block 2, and the connecting rod 6 passes through the dust ring 9. It can be understood that the dust ring 9 is limited by the annular limiting portion formed on the inner wall of the upper end of the first through hole of the pressing block 2, and the annular limiting portion is pressed tightly on the step surface of the outer ring of the dust ring 9.

[0023] The guide and positioning assembly comprises a guide block 5 and a positioning block 4 which is fastened to the outer end of the guide block 5 .

[0024] The inner hole of the guide block 5 forms the inner hole of the guide positioning assembly. Since the inner hole diameter of the guide block 5 is larger than the outer diameter of the piston rod 3 , this provides movement space for the horizontal movement of the guide block 5 .

[0025] like Figure 1 As shown, the working process of the utility model is as follows: the operator manually presses down the handle 11, driving the piston rod 3 to press down the spring 10, driving the guide positioning assembly to slide to the left, and after the operator manually puts in the workpiece, releases the handle 11, and under the upward elastic force of the spring 10, the guide positioning assembly slides to the right, so that the positioning block 4 is stuck in the workpiece positioning groove to achieve the positioning effect. It can be understood that the positioning block 4 is constructed in a V shape.

[0026] Under the upward elastic force of the spring 10, the guide positioning assembly is subjected to an upward force, and the positioning block 4 is subjected to a downward reaction force from the workpiece slot, thereby limiting the position of the guide positioning assembly and achieving a positioning effect.

[0027] After completing the processing, the operator manually presses down the handle 11, and the piston rod 3 presses down the spring 10, driving the guide positioning assembly to slide to the left; the operator manually takes out the workpiece, and the operator releases the pressure.

[0028] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An elastic positioning structure, characterized in that: It comprises a mounting block (1), the upper part of the mounting block (1) is connected to a pressing block (2), a piston rod (3) is slidably arranged in a first through hole formed after the mounting block (1) and the pressing block (2) are connected, the lower limit of the sliding of the piston rod (3) in the first through hole is limited by a limit ring (7), the upper end of the piston rod (3) is connected to a connecting rod (6), the connecting rod (6) extends to the outside of the pressing block (2), and the upper end of the piston rod (3) is limited by a countersunk step at the upper end of the first through hole; A guide positioning assembly is arranged between the mounting block (1) and the pressing block (2), the piston rod (3) passes through the guide positioning assembly, and the inner hole of the guide positioning assembly is larger than the outer diameter of the piston rod (3). The piston rod (3) can drive the guide positioning assembly to move horizontally during the lifting process.

2. The elastic positioning structure according to claim 1, characterized in that: A coaxially arranged spring (10) is fixed on the limiting ring (7), and a groove is arranged on the bottom surface of the piston rod (3) so that the piston rod (3) can cooperate with the spring (10) when the piston rod (3) moves downward.

3. The elastic positioning structure according to claim 1, characterized in that: The piston rod (3) is provided with an inclined guide groove, in which a pin (8) is arranged, and the axial outer end of the pin (8) is connected to the guide positioning assembly.

4. The elastic positioning structure according to claim 1, characterized in that: A dust ring (9) is installed at the upper end of the countersunk step of the pressing block (2), and the connecting rod (6) passes through the dust ring (9).

5. The elastic positioning structure according to claim 1, characterized in that: The axial outer end of the connecting rod (6) is fastened to the handle (11).

6. The elastic positioning structure according to claim 1, characterized in that: The guide and positioning assembly comprises a guide block (5) and a positioning block (4) which is fastened to the outer end of the guide block (5).

7. The elastic positioning structure according to claim 6, characterized in that: The inner hole of the guide block (5) forms the inner hole of the guide positioning component.

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