Limiting mechanism

Abstract

The utility model discloses a limiting mechanism, which relates to the field of workpiece processing, and comprises a first movable plate and a second movable plate, two ends of the first movable plate and the second movable plate are respectively movably connected through a linkage mechanism, one end face of the first movable plate close to the second movable plate is detachably provided with a first clamping plate, and the other end face of the first movable plate close to the second movable plate is detachably provided with a second clamping plate. An elastic structure is installed on the end face, close to the first movable plate, of the second movable plate, a second clamping plate is installed at the end, close to the first movable plate, of the elastic structure, the first movable plate movably drives the first clamping plate to move, and the second movable plate movably drives the second clamping plate connected with one end face of the elastic structure to move. And the first clamping plate and the second clamping plate move relatively to get close to clamp and limit the workpiece. The limiting mechanism is provided with a structure capable of achieving flexible clamping when the workpiece is clamped, and during machining, the situation that due to improper control, the workpiece is clamped and deformed, and the machining quality is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of workpiece processing, in particular to a limiting mechanism. Background Art

[0002] In the existing workpiece processing, most of them use mechanical arms for limit clamping, which is not only convenient but also efficient. However, in some small equipment processing plants, when processing small workpieces, the use of mechanical arms is not only costly, but also causes the mechanical arms to not work at "full load", resulting in a waste of resources. Therefore, in order to meet the needs of some small factories for processing and producing small workpieces, a new type of limit mechanism is designed and improved. Utility Model Content

[0003] The purpose of this utility model is achieved through the following technical solutions:

[0004] A limiting mechanism comprises a first movable plate and a second movable plate, wherein the two ends of the first movable plate and the second movable plate are movably connected via a linkage mechanism, a first clamping plate is detachably mounted on an end face of the first movable plate close to the second movable plate, an elastic structure is mounted on an end face of the second movable plate close to the first movable plate, and a second clamping plate is mounted on an end of the elastic structure close to the first movable plate, the first movable plate moves to drive the first clamping plate to move, the second movable plate moves to drive the second clamping plate connected to an end face of the elastic structure to move, and the first clamping plate and the second clamping plate move relative to each other and close together to clamp the workpiece to a limited position.

[0005] Preferably, the elastic structure comprises a sliding plate, springs are respectively arranged on both sides of one end of the sliding plate close to the second movable plate, movable shafts are respectively passed through the springs, one end of the springs is respectively connected to the sliding plate, and the other end of the springs is respectively connected to the second movable plate;

[0006] One end of the movable shaft movably passes through the sliding plate and the first movable plate, and the end is connected to the first fixed plate, and the other end of the movable shaft movably passes through the second movable plate, and the end is connected to the second fixed plate.

[0007] Preferably, a guide rod is provided between the second movable plate and the sliding plate, one end of the guide rod is connected to the second movable plate, and the other end of the guide rod movably passes through the second movable plate and is connected to an end cap.

[0008] Preferably, a first cylinder is installed between the first movable plate and the first fixed plate, one end of the first cylinder is connected to the first fixed plate, and the other end of the first cylinder is connected to the first movable plate. The first cylinder is used to drive the first movable plate to move, and the second movable plate is driven to move through a linkage mechanism arranged at both ends of the first movable plate and the second movable plate, so that the first clamping plate and the second clamping plate are moved to clamp the limited workpiece.

[0009] Preferably, the linkage mechanism comprises a first connecting rod, a rotating block and a second connecting rod respectively;

[0010] The rotating block is rotatably connected to the limiting plate via a rotating shaft, one end of the limiting plate is connected to the first fixed plate, and the other end of the limiting plate is connected to the second fixed plate, and the first fixed plate and the second fixed plate are fixed on the support frame;

[0011] One end of the first connecting rod is connected to an end of the rotating block away from the end surface of the limiting plate through a rotating shaft, and the other end of the first connecting rod is connected to the first movable plate through a rotating shaft;

[0012] One end of the second connecting rod is rotatably connected to an end surface of the rotating block away from the limiting plate and away from an end of the first connecting rod through a rotating shaft, and the other end of the second connecting rod is rotatably connected to the second movable plate through the rotating shaft.

[0013] The beneficial effects of the utility model are as follows: the purpose of the utility model is to provide a limiting mechanism, which mainly meets the needs of some small processing plants and limits the processing of some small workpieces, thereby saving the cost of processing and production; at the same time, the limiting mechanism is provided with a structure that can be used to clamp the workpiece and play a "flexible" clamping role, so as to avoid deformation of the workpiece due to improper control during processing, thereby affecting the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the connection structure of a limiting mechanism of the utility model;

[0015] In the figure, 1-first movable plate, 2-second movable plate, 11-first clamping plate, 12-first connecting rod, 13-rotating block, 14-second connecting rod, 15-limiting plate, 21-second clamping plate, 111-first fixed plate, 112-first cylinder, 113-movable shaft, 114-sliding plate, 115-spring, 116-guide rod, 211-second fixed plate DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, a limiting mechanism is used to limit and clamp the workpiece being processed, and can have a "flexible" clamping effect on the clamped workpiece, so as to avoid deformation of the workpiece due to improper control during processing, which affects the processing quality. The limiting mechanism is designed to include a clamping mechanism for clamping the limited workpiece, and the clamping mechanism includes a first movable plate 1 and a second movable plate 2. The two ends of the first movable plate 1 and the second movable plate 2 are movably connected by a linkage mechanism. The linkage mechanism set by the control is used to drive the first movable plate 1 and the second movable plate 2 to move relative to each other, so that the first movable plate 1 drives the first clamping plate 11 detachably connected to one end face of the first movable plate 1 and installed close to one end of the second movable plate 2 to move, and at the same time, the second movable plate 2 drives the first clamping plate 11 detachably connected to one end face of the second movable plate 2 to move relative to each other. The elastic structure detachably connected and installed near one end of the first movable plate 1 translates, that is, the second clamping plate 21 installed near one end of the elastic structure 1 moves along with the second movable plate 2. When the first movable plate 1 moves to drive the first clamping plate 11 and the second movable plate 2 moves to drive the second clamping plate 21 connected to one end face of the elastic structure, and the first clamping plate 11 and the second clamping plate 21 move relatively close to each other, the workpiece placed between the first clamping plate 11 and the second clamping plate 21 is clamped and limited, so as to facilitate further processing of the clamped workpiece. In practice, since the shapes of the workpieces are different, the first clamping plate 11 and the second clamping plate 21 are detachably arranged, so that the first clamping plate 11 and the second clamping plate 21 adapted to the workpiece can be replaced at any time according to the shape structure of different batches of workpieces, so that the workpiece can be clamped and limited better.

[0018] Further, in the embodiment, the two linkage mechanisms of the same design for controlling the linkage provided by the limiting mechanism are designed to include a first connecting rod 12, a rotating block 13 and a second connecting rod 14; wherein the rotating block 13 is connected to the limiting plate 15 by rotating through a rotating shaft, one end of the limiting plate 15 is connected to the first fixed plate 111, and the other end of the limiting plate 15 is connected to the second fixed plate 211, and the first fixed plate 111 and the second fixed plate 121 are fixed on the support frame; at the same time, one end of the first connecting rod 12 is connected to an end of the rotating block 13 away from an end face of the limiting plate 15 by rotating through a rotating shaft, and the other end of the first connecting rod 12 is connected to the first movable plate 1 by rotating through a rotating shaft; and, one end of the second connecting rod 14 is connected to an end face of the rotating block 13 away from the limiting plate 15 and away from an end of the first connecting rod 12 by rotating through a rotating shaft, and the other end of the second connecting rod 14 is connected to the second movable plate 2 by rotating through a rotating shaft. In the process of implementing control to clamp and limit the workpiece, the first cylinder 112 installed between the first movable plate 1 and the first fixed plate 111 is controlled, one end of the first cylinder 112 is connected to the first fixed plate 111, and the other end of the first cylinder 112 is connected to the first movable plate 1, and the first cylinder 112 is started to drive the first movable plate 1 to move; in order to enable the first movable plate 1 and the second movable plate 2 to drive the elastic structure connected to the second movable plate 2 to move horizontally relative to each other, a movable shaft 113 is provided for guiding and facilitating translation, and the two symmetrically arranged movable shafts 113 respectively pass through the first movable plate 1 and the second movable plate 2, one end of the two movable shafts 113 is respectively connected to the first fixed plate 111, and the other end of the two movable shafts 113 is respectively connected to the second fixed plate 211. When the first cylinder 112 is controlled to start and drive the first movable plate 1 to translate along the guiding direction of the movable shaft 113, the translation of the first movable plate 1 drives the first connecting rod 12 symmetrically arranged at both ends of the first movable plate 1 to rotate and translate, so that the first connecting rod 12 pushes the rotating block 13 connected to the other end of the first connecting rod 12 to rotate around the limit plate 15 rotatably connected through the rotating shaft. The rotating block 13 is driven by the first connecting rod 12 to rotate, driving the second connecting rod 14 connected to the other end of the rotating block 13 to pull the first movable plate 1 connected to the other end of the second connecting rod 14 to move toward one side of the first movable plate 1 through the movable shaft 113, and then driving the elastic structure connected to the first movable plate 1 to move along the movable shaft 113 toward one side of the first movable plate 1, and the workpiece placed between the first clamping plate 11 and the second clamping plate 21 is clamped and limited by the relatively close first clamping plate 11 and the second clamping plate 21.

[0019] Furthermore, in the clamping and limiting of the workpiece, in order to avoid deformation of the workpiece, especially the "non-rigid" workpiece, due to improper control during the processing or clamping process, thereby affecting the processing quality, an elastic structure is installed on the second movable plate 2 of the limiting mechanism close to the end of the first movable plate 1, that is, the first movable plate 1 is connected along the end close to the second movable plate 2; the elastic structure includes a sliding plate 114 in terms of design structure, and springs 115 are respectively arranged on both sides of the end of the sliding plate 114 close to the second movable plate 2, and the springs 115 are respectively penetrated by movable shafts 113, one end of the spring 115 is respectively connected to the sliding plate 114, and the other end of the spring 115 is respectively connected to the second movable plate 2. When the second movable plate 2 is linked by the two linkage mechanisms, it drives the sliding plate 114 and the second clamping plate 21 detachably connected to one end of the sliding plate 114 to move toward one end of the first clamping plate 11, and the first clamping plate 11 also moves toward one side of the second clamping plate 21 under the action of the two linkage mechanisms, so that the first clamping plate 11 and the second clamping plate 21 are opposite to each other and translate along the two movable axes 113, and are placed on the first clamping plate 11 and the second clamping plate 21 for clamping and limiting. When the first clamping plate 11 and the second clamping plate 21 clamp the workpiece to a limited position, the sliding plate 114 connected to one end of the second clamping plate 21 is subjected to pressure to compress the springs 115 on both sides. At the same time, in order to ensure that the sliding plate 114 slides smoothly, a guide rod 116 is also provided between the second movable plate 2 and the sliding plate 114. One end of the guide rod 116 is connected to the second movable plate 2, and the other end of the guide rod 116 movably passes through the second movable plate 2 and is connected to an end cap that prevents the guide rod 116 from sliding out of the second movable plate 2. When clamping the workpiece in this way, the second clamping plate 21 has a certain "flexible" clamping effect, thereby providing a certain protection for the clamped and limited workpiece, especially some "non-rigid" workpieces, to avoid deformation of the workpiece and affect the quality of processing. From the overall design of the limit mechanism, the limit mechanism mainly meets the needs of some small processing plants and limits the processing of some small workpieces, thereby saving the cost of processing and production; at the same time, the limit mechanism is equipped with a structure that can be used to clamp the workpiece and play a "flexible" clamping role. During processing, it can avoid deformation of the workpiece due to improper control, thereby affecting the processing quality.

[0020] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the embodiments in the above description. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

Claims

1. A limiting mechanism, characterized in that: The invention comprises a first movable plate and a second movable plate, wherein the two ends of the first movable plate and the second movable plate are movably connected via a linkage mechanism, a first clamping plate is detachably mounted on an end face of the first movable plate close to the second movable plate, an elastic structure is mounted on an end face of the second movable plate close to the first movable plate, and a second clamping plate is mounted on an end of the elastic structure close to the first movable plate, the movement of the first movable plate drives the first clamping plate to move, the movement of the second movable plate drives the second clamping plate connected to an end face of the elastic structure to move, and the first clamping plate and the second clamping plate move relative to each other and close to clamp the workpiece to a limited position.

2. A limiting mechanism according to claim 1, characterized in that: The elastic structure comprises a sliding plate, springs are respectively arranged on both sides of one end of the sliding plate close to the second movable plate, movable shafts are respectively passed through the springs, one end of the springs is respectively connected to the sliding plate, and the other end of the springs is respectively connected to the second movable plate; One end of the movable shaft movably passes through the sliding plate and the first movable plate, and the end is connected to the first fixed plate, and the other end of the movable shaft movably passes through the second movable plate, and the end is connected to the second fixed plate.

3. A limiting mechanism according to claim 1, characterized in that: A guide rod is arranged between the second movable plate and the sliding plate, one end of the guide rod is connected to the second movable plate, and the other end of the guide rod movably passes through the second movable plate and the end is connected to an end cap.

4. A limiting mechanism according to claim 2, characterized in that: A first cylinder is installed between the first movable plate and the first fixed plate, one end of the first cylinder is connected to the first fixed plate, and the other end of the first cylinder is connected to the first movable plate. The first cylinder is used to drive the first movable plate to move, and the second movable plate is driven to move through a linkage mechanism arranged at both ends of the first movable plate and the second movable plate, so that the first clamping plate and the second clamping plate are moved to clamp the limited workpiece.

5. A limiting mechanism according to claim 1, characterized in that: The linkage mechanism comprises a first connecting rod, a rotating block and a second connecting rod respectively; The rotating block is rotatably connected to the limiting plate via a rotating shaft, one end of the limiting plate is connected to the first fixed plate, and the other end of the limiting plate is connected to the second fixed plate, and the first fixed plate and the second fixed plate are fixed on the support frame; One end of the first connecting rod is connected to an end of the rotating block away from the end surface of the limiting plate through a rotating shaft, and the other end of the first connecting rod is connected to the first movable plate through a rotating shaft; One end of the second connecting rod is rotatably connected to an end surface of the rotating block away from the limiting plate and away from an end of the first connecting rod through a rotating shaft, and the other end of the second connecting rod is rotatably connected to the second movable plate through the rotating shaft.

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