Clamping jaw ejection structure

Abstract

The utility model discloses a clamping jaw ejection structure, which relates to the technical field of automatic loading and unloading, and comprises a base, the base is provided with a station for placing a workpiece, a plurality of clamping blocks hinged to the base are arranged in the station, the clamping blocks are pressed on the outer wall, deviating from the base, of the workpiece, and at least one ejection block is arranged between every two adjacent clamping blocks. When the clamping block presses and touches the workpiece, the ejecting block elastically abuts against the wall face, facing the base, of the workpiece, so that in the discharging process, when the clamping block loosens the workpiece, the ejecting block elastically pushes and abuts against the workpiece, the workpiece is attached to the jig, the workpiece is prevented from being taken up when the base is away from the jig, the clamping accuracy is guaranteed, and the positioning precision and the machining stability are improved; therefore, the production efficiency and the safety are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic loading and unloading, and particularly relates to a jaw ejecting structure. Background Art

[0002] In the production process of casting parts, multi-axis robots are generally used to carry parts during the loading and unloading process. The jaws of the robot are provided with clamping cylinders for clamping workpieces, and the jaws are provided with positioning posts for positioning workpieces. Since the holes on the workpiece that cooperate with the positioning posts are rough holes, there are errors in the distances between multiple holes. When multiple holes cooperate with multiple positioning posts, there is pressure contact between the side walls of the positioning posts and the hole walls. During the loading process, after the clamping cylinder of the jaw is loosened and leaves the fixture, the positioning post will lift the workpiece at this time, resulting in the workpiece not being able to fit the fixture, thus causing clamping failure, affecting the positioning accuracy, and even being prone to collision accidents during processing, seriously affecting production efficiency and safety. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides a jaw ejecting structure to make the workpiece fit the fixture during the loading process and ensure the accuracy of clamping.

[0004] A jaw ejecting structure according to an embodiment of the utility model includes:

[0005] A base, provided with a work station for placing a workpiece. The work station has a plurality of clamping blocks hinged to the base. The clamping blocks press against the outer wall of the workpiece facing away from the base. At least one ejecting block is arranged between two adjacent clamping blocks. When the clamping blocks press against the workpiece, the ejecting block elastically abuts against the wall surface of the workpiece facing the base.

[0006] A jaw ejecting structure according to an embodiment of the utility model has at least the following beneficial effects: This embodiment is provided with a base. The base is provided with a work station for placing a workpiece. The work station has a plurality of clamping blocks hinged to the base. The clamping blocks press against the outer wall of the workpiece facing away from the base. At least one ejecting block is arranged between two adjacent clamping blocks. When the clamping blocks press against the workpiece, the ejecting block elastically abuts against the wall surface of the workpiece facing the base, so that during the unloading process, when the clamping blocks release the workpiece, the ejecting block elastically pushes against the workpiece to make the workpiece fit the fixture, avoiding lifting the workpiece when the base moves away from the fixture, ensuring the accuracy of clamping, improving the positioning accuracy and processing stability, and thus ensuring production efficiency and safety.

[0007] According to some embodiments of the utility model, support blocks are arranged on both sides of the clamping block. When the clamping block presses against the workpiece, the support block abuts against the wall surface of the workpiece facing the base.

[0008] According to some embodiments of the present utility model, an elastic member is provided between the top block and the base, and the elastic member enables the top block to elastically press against the workpiece.

[0009] According to some embodiments of the present utility model, a positioning seat is provided on the base, and the top block slides along its axial direction within the positioning seat.

[0010] According to some embodiments of the present utility model, the end of the top block facing away from the base has an abutting block, and the two ends of the elastic member respectively abut against the positioning seat and the abutting block.

[0011] According to some embodiments of the present utility model, the clamping block includes a power end and a pressing end respectively provided at both ends, the pressing end is used to press against the workpiece, and a clamping cylinder is provided on the base, and the clamping cylinder is movably connected to the power end.

[0012] According to some embodiments of the present utility model, a hinge portion is provided between the power end and the pressing end, the hinge portion is hinged to the base, and when the clamping cylinder pushes the power end, the clamping block rotates around the hinge center of the hinge portion.

[0013] According to some embodiments of the present utility model, an adapter block is provided between the hinge portion and the base, and the two ends of the adapter block are respectively hinged to the base and the hinge portion.

[0014] According to some embodiments of the present utility model, the workpiece is provided with a plurality of positioning holes, and the base is provided with a plurality of limit posts inserted into the positioning holes, and the radial outer wall of the limit post is a conical surface.

[0015] According to some embodiments of the present utility model, at least two workstations are provided on both sides of the base.

[0016] Some additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0018] Figure 1 is an axonometric view of a jaw ejection structure in an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 an enlarged view of A in

[0020] Figure 3 is Figure 1 an enlarged view of B in

[0021] Figure 4 is a first sectional view of a jaw ejection structure in an embodiment of the present utility model;

[0022] Figure 5 This is the second cross-sectional view of a jaw ejection structure in an embodiment of the present utility model.

[0023] Reference signs:

[0024] Base 100; workpiece 101; positioning hole 102; support block 103; clamping cylinder 104; limit post 105;

[0025] Ejection block 110; abutting block 111; elastic member 112; positioning seat 113; clamping block 114; pressing contact end 115; hinge portion 116; power end 117; connecting block 118;

[0026] Workstation 120. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0029] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0031] Refer to Figure 1 and Figure 2, in a jaw ejection structure according to an embodiment of the present utility model, it includes a base 100. The base 100 is provided with a working station 120 for placing a workpiece 101. Inside the working station 120, there are a plurality of clamping blocks 114 hinged to the base 100. The clamping blocks 114 press against the outer wall of the workpiece 101 facing away from the base 100 to fix the workpiece 101. It can be understood that, referring to Figure 5 , at least two working stations 120 are provided on the base 100. In the embodiment of the present application, at least two working stations 120 are provided on both sides of the base 100, which can clamp a plurality of workpieces 101 simultaneously, improving the efficiency of loading and unloading.

[0032] At least one ejector block 110 is provided between two adjacent clamping blocks 114. When the clamping blocks 114 press against the workpiece 101, the ejector block 110 elastically abuts against the wall surface of the workpiece 101 facing the base 100. So that during the unloading process, when the clamping blocks 114 release the workpiece 101, the ejector block 110 elastically pushes the workpiece 101, making the workpiece 101 fit the fixture, preventing the workpiece 101 from being lifted when the base 100 moves away from the fixture, ensuring the accuracy of clamping, improving the positioning accuracy and processing stability, and thus ensuring the production efficiency and safety.

[0033] It can be understood that an elastic member 112 is provided between the ejector block 110 and the base 100. The elastic member 112 keeps the ejector block 110 elastically pressing against the workpiece 101. In the embodiment of the present application, the elastic member 112 can be selected as a helical spring, making the ejector block 110 maintain a movement trend away from the base 100. Further, a fixed positioning seat 113 is provided on the base 100. The ejector block 110 is inserted into the positioning seat 113, and the ejector block 110 slides along its axial direction inside the positioning seat 113. Further, the end of the ejector block 110 facing away from the base 100 has an abutting block 111. The abutting block 111 has an outer edge extending in the radial direction. One end of the elastic member 112 abuts against the side wall of the outer edge close to the positioning seat 113. Thus, the two ends of the elastic member 112 respectively abut against the positioning seat 113 and the abutting block 111, realizing the driving of the ejector block 110, and keeping the ejector block 110 elastically pressing against the workpiece 101 when clamping the workpiece 101.

[0034] Referring to Figure 2 and Figure 4, It can be understood that the clamping block 114 includes a power end 117, a hinge portion 116 and a pressing end 115 respectively provided at both ends. The pressing end 115 is used to press against the workpiece 101. The hinge portion 116 is rotatably connected to the base 100. A clamping cylinder 104 is provided on the base 100. The end of the piston rod of the clamping cylinder 104 is movably connected to the power end 117. The clamping cylinder 104 can push the power end 117 to make the clamping block 114 rotate around the rotation center of the hinge portion 116, so that the pressing end 115 presses against the workpiece 101 to realize the clamping of the workpiece 101; when loosening, the piston rod of the clamping cylinder 104 pulls the power end 117 to make the clamping block 114 rotate and the pressing end 115 move away from the surface of the workpiece 101 to realize the unclamping process.

[0035] Furthermore, an adapter block 118 is provided between the hinge portion 116 and the base 100. The two ends of the adapter block 118 are respectively hinged to the base 100 and the hinge portion 116. It can be understood that during the unclamping process, the clamping cylinder 104 drives the power end 117 to move towards the base 100. Since the adapter block 118 is rotatably connected to both the base 100 and the hinge portion 116, the hinge portion 116 can rotate along the part where the adapter block 118 is hinged to the base 100, so that the hinge portion 116 moves away from the top block 110, thereby realizing that the pressing end 115 quickly moves away from the workpiece 101 during unclamping, effectively avoiding lifting the workpiece 101 when loading the fixture and improving stability.

[0036] It can be understood that the pressing ends 115 of the two clamping blocks 114 are arranged opposite to each other, and the top block 110 is located between the two pressing ends 115, which helps to ensure the balanced force of the workpiece 101 and avoid displacement due to force deviation caused by the thrust of the top block 110 when the clamping block 114 releases the workpiece 101.

[0037] Furthermore, support blocks 103 are provided on both sides of the clamping block 114. When the clamping block 114 presses against the workpiece 101, the support blocks 103 abut against the wall surface of the workpiece 101 facing the base 100, so that when the clamping block 114 presses against the workpiece 101, the workpiece 101 is clamped through the support blocks 103.

[0038] Furthermore, referring to Figure 3 , the workpiece 101 is provided with a plurality of positioning holes 102. The plurality of positioning holes 102 are arranged on the outer periphery of the work station 120. The base 100 is provided with a plurality of limit posts 105 inserted into the positioning holes 102, and the outer wall of the radial direction of the limit posts 105 is a conical surface. It can be understood that since the positioning holes 102 are rough holes and there is a large distance error between adjacent two holes, the cooperation of the limit posts 105 with conical surfaces and the positioning holes 102 can realize rapid positioning, and when loading the fixture, the workpiece 101 can be quickly released to avoid driving the workpiece 101 and causing clamping errors.

[0039] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant art.

Claims

1. A jaw ejection structure, characterized in that: include: The base is provided with a work station for placing the workpiece, wherein the work station is provided with a plurality of clamping blocks hinged to the base, wherein the clamping blocks press against the outer wall of the workpiece facing away from the base, and at least one top block is provided between two adjacent clamping blocks, wherein when the clamping blocks press against the workpiece, the top block elastically contacts the wall of the workpiece facing the base.

2. A clamping jaw ejection structure according to claim 1, characterized in that: Support blocks are arranged on both sides of the clamping block. When the clamping block presses the workpiece, the support blocks abut against the wall surface of the workpiece facing the base.

3. A jaw ejection structure according to claim 1, characterized in that: An elastic member is provided between the top block and the base, and the elastic member enables the top block to maintain elastic pressure contact with the workpiece.

4. A jaw ejection structure according to claim 3, characterized in that: A positioning seat is provided on the base, and the top block slides in the positioning seat along the axial direction thereof.

5. A jaw ejection structure according to claim 4, characterized in that: The end of the top block away from the base is provided with an abutment block, and the two ends of the elastic member respectively abut against the positioning seat and the abutment block.

6. The clamping jaw ejection structure according to claim 1, characterized in that: The clamping block comprises a power end and a pressure contact end respectively arranged at two ends, the pressure contact end is used for pressing the workpiece, and a clamping cylinder is arranged on the base, and the clamping cylinder is movably connected to the power end.

7. A jaw ejection structure according to claim 6, characterized in that: A hinged portion is provided between the power end and the pressure contact end, and the hinged portion is hinged to the base. When the clamping cylinder pushes the power end, the clamping block rotates around the hinge center of the hinged portion.

8. The jaw ejection structure according to claim 7, characterized in that: A connection block is provided between the hinged portion and the base, and two ends of the connection block are hinged to the base and the hinged portion respectively.

9. The clamping jaw ejection structure according to claim 1, characterized in that: The workpiece is provided with a plurality of positioning holes, and the base is provided with a plurality of limiting columns plugged into the positioning holes, and the radial outer wall of the limiting column is a conical surface.

10. The clamping jaw ejection structure according to claim 1, characterized in that: At least two workstations are arranged on both sides of the base.

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