A secondary positioning fixture for a bent part

Abstract

The utility model relates to tool fixture technical field discloses a kind of secondary positioning fixture of bending part, comprising: bending die holder: the bending die holder includes recessed template that workpiece is received and bent into bending part, and the recessed template has and recessed part that bending part is bent adaptation;Push mechanism: including by being close to recessed template to contact bending part, and push rod that bending part is pushed to separate from recessed part;First adjusting mechanism: including adjustment positioning end, the adjustment positioning end is close to the bending part that separates from recessed part by, and with the periphery contact of one bending end of the bending part, to position bending part orientation;Second adjusting mechanism: by being close to bending part, and with the adjustment positioning end opposite clamping the bending end. Secondary positioning fixture is linked and cooperated by push mechanism, first adjusting mechanism and second adjusting mechanism three, and the attitude consistency of multiple workpieces in continuous production is guaranteed before being grabbed by manipulator.

Description

Technical Field

[0001] This utility model relates to the field of workpiece positioning fixture technology, and in particular to a secondary positioning fixture for bent parts. Background Technology

[0002] During the manufacturing process of a certain part, the blank material needs to be bent. To meet the requirements of automated production lines, the bent blank needs to be picked up by a robotic arm and moved to the next process. However, after being bent, the blank material, even when resting on the bending template, cannot maintain a fixed shape or posture for the robotic arm to pick up. Furthermore, when multiple blanks are bent consecutively, their shapes or postures on the bending template are not consistent. The robotic arm cannot quickly identify and pick up bent parts with different postures on the bending template. Even if the robotic arm has its own self-identification technology, it is still very likely to affect the production efficiency of the automated production line. Therefore, currently, the transfer of bent parts to the next process mainly relies on manual picking and transfer, which is inefficient and has a very high risk factor. Utility Model Content

[0003] This utility model provides a secondary positioning fixture for bent parts, which aims to solve the problem of how to ensure the consistency of the shape of the bent parts when they are clamped by a robot to the next process after the workpiece is bent.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A secondary positioning fixture for bent parts, comprising:

[0006] Bending die holder: The bending die holder includes a recessed template for accommodating the workpiece to be bent into a bent part, the recessed template having a recessed portion adapted to the bending of the bent part;

[0007] The pushing mechanism includes a push rod that approaches the recessed template to contact the bent part and pushes the bent part away from the recess;

[0008] First adjustment mechanism: includes an adjustment positioning end, which is located near a bent part that disengages from the recess and contacts the outer periphery of one bent end of the bent part to position the bent part.

[0009] The second adjustment mechanism: by approaching the bent part and clamping the bent end opposite to the adjustment and positioning end, the bending part is positioned twice.

[0010] Furthermore, the central axis of the push rod is parallel to or coaxial with the central axis of the recess.

[0011] Furthermore, the end of the push rod is provided with a push plate, which contacts the middle section and / or both ends of the bent component to push the bent component.

[0012] Furthermore, the push plate has an arc-shaped structure that matches the curvature of the recess.

[0013] Furthermore, the recessed template surface is provided with a support surface adapted to the outer periphery of the workpiece, and the support surface is used to position the workpiece.

[0014] Furthermore, the initial position of the adjustment and positioning end of the first adjustment mechanism is the starting position of the part being pushed by the pushing mechanism to the part being disengaged from the recess.

[0015] Furthermore, the first adjustment mechanism also includes a first telescopic device, and the adjustment positioning end is moved under the control of the telescopic end of the first telescopic device.

[0016] Furthermore, the first telescopic device is a cylinder.

[0017] Furthermore, the second adjustment mechanism includes a second telescopic device, which is a cylinder.

[0018] Furthermore, the pushing mechanism includes a third telescopic device, and the pushing rod is controlled by the third telescopic device to push the bending part. The third telescopic device is a cylinder.

[0019] The beneficial effects of this utility model are as follows:

[0020] The secondary positioning fixture works in concert with the pusher mechanism, the first adjustment mechanism and the second adjustment mechanism. After the workpiece is punched and bent on the recessed template, the pusher mechanism pushes the workpiece away from the recessed template. The first adjustment mechanism and the second adjustment mechanism approach and clamp the bent end from both sides of one of the bent ends of the workpiece, ensuring the consistency of multiple workpieces produced continuously. That is, multiple workpieces always maintain the same position and the same posture after the bending process so that the robot can grab them to the next process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the bending secondary positioning fixture described in Example 1. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] A secondary positioning fixture facilitates the gripping of bent parts by a robotic arm, used to position the bent part A in its placement state, such as... Figure 1 As shown, the secondary positioning fixture includes a bending die base 1, a pushing mechanism 2, a first adjustment mechanism 3, and a second adjustment mechanism 4. The bending die base 1 includes a recessed template 11 for accommodating the workpiece being bent into a bent part A. The recessed template 11 has a recessed portion 111 adapted to the bending of the bent part A. The workpiece is fed onto the recessed template 11, and a stamping device performs a stamping and bending operation on the workpiece, causing it to bend within the recessed portion 111. The pushing mechanism 2 includes a mechanism that contacts the bent part A by approaching the recessed template 11, and... The bent piece A is pushed to the push rod 21 that disengages from the recess 111. The first adjustment mechanism 3 includes an adjustment positioning end 31, which makes preliminary positioning of the bent piece A by approaching the bent piece A disengagement from the recess 111 and contacting the outer periphery of one bent end A1 of the bent piece A. The second adjustment mechanism 4 makes secondary positioning of the bent piece A by approaching the bent piece A and cooperating with the adjustment positioning end of the first adjustment mechanism 3 to clamp the aforementioned bent end A1 of the bent piece. Afterwards, both the first adjustment mechanism 3 and the second adjustment mechanism 4 release their clamping of the bent piece A, and the robot arm can then grasp the bent piece A to proceed to the next process.

[0025] The central axis of the push rod 21 is parallel or coaxial with the central axis of the recessed portion 111 on the recessed template; to achieve uniform application of pushing force to the bent part A, a push plate 22 is also provided at the end of the push rod 21, and the push plate 22 contacts the middle section and / or both ends of the bent part A to push the bent part. Figure 1 As shown, the pusher plate 22 has an arc-shaped structure 221 that matches the curvature of the recessed portion on the recessed template 11. Both ends of the pusher plate 22 at the arc-shaped structure 221 have extension portions 222. The extension length of the extension portions 222 is sufficient to ensure that the extension portions overlap with the upper surface of the recessed template 11 when the pusher plate 22 pushes the bent piece A. This design of the pusher plate 22 with its arc-shaped structure and extension portions improves the smoothness of the pusher rod 21 in uniformly pushing the bent piece A, and can accommodate the pushing of bent pieces of different sizes.

[0026] The pushing mechanism 2 also includes a third telescopic device. The pushing rod 21 is a rod that is controlled by the third telescopic device to push and retract. The third telescopic device is generally a cylinder, and the pushing rod can be assumed to be the cylinder rod of the cylinder.

[0027] Preferably, the upper surface of the recessed template 11 is further provided with a support surface (not shown) adapted to the outer periphery of the workpiece. The support surface is used to position the workpiece and avoid the problem that the workpiece may roll when placed on the upper surface of the recessed template 11 if the outer periphery of the workpiece is cylindrical. When the cross-section of the workpiece is circular, the support surface is an arc surface.

[0028] The first adjustment mechanism 3 and the second adjustment mechanism 4 are located on the same side of the bending die base 1, while the pusher mechanism 2 is located on the other side of the bending die base 1. The initial position of the adjustment and positioning end 31 of the first adjustment mechanism 3 is that the bent part A is pushed by the pusher mechanism 2 to the disengagement start end of the disengagement recess 111, as shown below. Figure 1 As shown, the initial position of the adjustment positioning end 31 of the first adjustment mechanism 3 is to fit the end face of the recessed template 11, and the upper surface of the adjustment positioning end 31 is flush with or lower than the bottom surface of the recessed part 111 of the recessed template.

[0029] The first adjustment mechanism 3 also includes a first telescopic device 32, and the adjustment positioning end 31 is moved by the telescopic end of the first telescopic device 32. The second adjustment mechanism 4 includes a second telescopic device and a clamping end that contacts the bending end A1 of the bent part. The telescopic movement directions of the first adjustment mechanism 3 and the second adjustment mechanism 4 are parallel to the central axis direction of the recess 111. Both the first telescopic device and the second telescopic device are cylinders.

[0030] The pushing force applied by the pushing mechanism 2 to the bent part A allows the bent part to fall between the first adjusting mechanism 3 and the second adjusting mechanism 4. The length of the adjusting positioning end 31 of the first adjusting mechanism (referring to its length in the direction of contact with the recessed template) is sufficiently long to cover the space occupied by the bent part A after it falls. This length design effectively prevents the adjusting positioning end 31 from pushing the bent part A away from the second adjusting mechanism 4, thus avoiding a situation where the bent part is pushed too far away. The second adjusting mechanism 4 is shorter in the direction parallel to the length of the adjusting positioning end 31. Generally, the pushing force of the pushing mechanism 2 on the bent part A is preset, so the distance and landing point of the bent part A can be basically determined each time. The clamping end of the second adjusting mechanism 4 only needs to overlap with the aforementioned bending end A1 of the bent part.

[0031] While the first adjustment mechanism controls the adjustment and positioning end 31 to push the bent part A towards the second adjustment mechanism 4, or during the process, the cylinder of the second adjustment mechanism 4 also extends towards the adjustment and positioning end 31. The two move towards each other, and finally complete the opposing clamping of the aforementioned bent end A1 of the bent part.

[0032] The secondary positioning fixture of this utility model is equipped with an electrical control system. The electrical control system controls the pushing mechanism, the first adjustment mechanism, and the second adjustment mechanism. Through the linkage of these three mechanisms, after the workpiece is punched and bent on the recessed template, the pushing mechanism pushes the workpiece to detach from the recessed template. The first adjustment mechanism and the second adjustment mechanism approach and clamp the bent end from both sides of one of the bent ends of the workpiece, respectively, to ensure the consistency of multiple workpieces produced continuously. This ensures that multiple workpieces always maintain the same position and posture after the bending process so that the robot can grasp them for the next process.

[0033] It should be noted that the first telescopic device, the second telescopic device, and the third telescopic device may also be selected from hydraulic cylinders or other devices that can realize telescopic functions.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A secondary positioning fixture for bent parts, characterized in that, include: Bending die holder (1): The bending die holder (1) includes a recessed template (11) for accommodating the workpiece to be bent into a bent part, the recessed template (11) having a recessed portion (111) adapted to the bending of the bent part; Pushing mechanism (2): includes a push rod (21) that contacts the bent part by approaching the recessed template (11) and pushes the bent part away from the recess (111); First adjustment mechanism (3): includes adjustment positioning end (31), the adjustment positioning end (31) is close to the bending member of the disengagement recess (111) and contacts the outer periphery of one bending end of the bending member to position the bending member; The second adjustment mechanism (4) completes the secondary positioning of the bent part by approaching the bent part and clamping the bent end opposite to the adjustment positioning end (31).

2. The secondary positioning fixture for bent parts according to claim 1, characterized in that, The central axis of the push rod (21) is parallel to or coaxial with the central axis of the recess (111).

3. The secondary positioning fixture for a bent piece according to claim 2, wherein The pusher (21) has a pusher plate (22) at its end, and the pusher plate (22) contacts the middle section and / or both ends of the bent part to push the bent part.

4. The secondary positioning fixture for a bent piece according to claim 3, wherein The push plate (22) has an arc-shaped structure (221) that matches the curvature of the recess (111).

5. The bend secondary positioning fixture of claim 1, wherein, The recessed template (11) has a support surface that is adapted to the outer periphery of the workpiece, and the support surface is used to position the workpiece.

6. The bend secondary positioning fixture of claim 1, wherein, The initial position of the adjustment positioning end (31) of the first adjustment mechanism is the starting position of the part being pushed by the pusher mechanism (2) to the parting recess (111).

7. The secondary positioning fixture for bent parts according to claim 1, characterized in that, The first adjustment mechanism (3) further includes a first telescopic device (32), and the adjustment positioning end (31) is controlled to move by the telescopic end of the first telescopic device (32).

8. The secondary positioning fixture for bent parts according to claim 7, characterized in that, The first telescopic device (32) is a cylinder.

9. The bend secondary positioning fixture of claim 1, wherein, The second adjustment mechanism (4) includes a second telescopic device, which is a cylinder.

10. The bend secondary positioning fixture of claim 1, wherein, The pushing mechanism (2) includes a third telescopic device, and the pushing rod (21) is controlled by the third telescopic device to push the bending part. The third telescopic device is a cylinder.

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