A liftable claw structure and a lifting clamp

Abstract

The application discloses a liftable claw structure and a lifting clamp claw. A sliding table is arranged on a horizontal base, and an inclined guide part is arranged on the sliding table and inclined relative to the horizontal base. One end of a claw part is provided with a positioning structure for positioning a workpiece, and the other end is provided with a sliding part inclined relative to the horizontal base, so that the sliding part is slidingly connected to the inclined guide part. A resilient reset member is located between a first abutting part of the sliding table and a second abutting part of the sliding part, and the two ends of the resilient reset member respectively abut against the first abutting part of the sliding table and the second abutting part of the sliding part. The number of the liftable claw structures is two, and the two liftable claw structures are symmetrically arranged. The lower planes of the claw parts of the two liftable claw structures are located on the same horizontal plane. The structure arrangement lifts the workpiece clamped by the two claw structures, so that the workpiece is not in contact with the table surface, and the bottom surface of the workpiece is not easily scratched when the workpiece is moved to the next station by the two claw structures.

Description

Technical Field

[0001] This invention relates to the field of tooling technology for the production of battery terminals for new energy vehicles, and in particular to a liftable claw structure and a lifting gripper. Background Technology

[0002] Battery terminals are crucial components in new energy vehicle batteries, thus requiring relatively high surface finish. Currently, the stamping process involves placing a block of metal blank into a progressive stamping machine. After one stamping cycle, the pre-formed blank is held by non-lifting cylinder grippers and transferred to the next stamping station via translation. This process is repeated until the blank is stamped into a battery terminal. Because this transfer method involves translation, the blank rubs against the worktable during translation, resulting in severe scratches on the bottom surface and a low yield rate for the produced battery terminals. Therefore, there is an urgent need for a liftable gripper structure and lifting clamps to address these technical problems. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the aforementioned technologies by designing a liftable claw structure and a liftable gripper.

[0004] The present invention discloses a liftable claw structure comprising: A horizontal base, on which a slide is provided, and on which an inclined guide portion is provided at an inclination relative to the horizontal base; The claw portion has a positioning structure for positioning the workpiece at one end and a sliding portion that is inclined relative to the horizontal base at the other end, so that the sliding portion is slidably connected to the inclined guide portion. An elastic reset member is located between the first abutting part of the slide table and the second abutting part of the sliding part, and its two ends respectively abut against the first abutting part of the slide table and the second abutting part of the sliding part; When the sliding part translates along the oblique axis of the inclined guide in the first direction, the claw part rises, causing the elastic reset member to be in a compressed state; when the sliding part translates along the oblique axis of the inclined guide in the second direction, the claw part descends, causing the elastic reset member to be in an unfolded state.

[0005] According to the above-described liftable claw structure, the inclined guide includes an inclined slide rail that is inclined relative to the horizontal base. The inclined slide rail is arranged in a straight line along the length of the slide table, and the sliding part slides and engages within the inclined slide rail.

[0006] According to the above-described liftable claw structure, the slide includes a base and a cover plate. The base is provided with an inclined surface that is inclined relative to the horizontal base. An inclined guide groove adapted to the sliding part is provided on the inclined surface so that the sliding part slides obliquely and fits in the inclined guide groove. The cover plate is fixed on the inclined surface to at least partially cover the sliding part so that the cover plate and the inclined guide groove combine to form an inclined slide.

[0007] According to the above-described liftable claw structure, an extension is formed at one end of the cover plate away from the claw portion, and the first abutment portion is disposed on the extension of the cover plate.

[0008] According to the above-described liftable claw structure, a limiting protrusion is formed at the end of the sliding part away from the claw; when the claw is lifted, there is a gap between the inner side of the limiting protrusion and the end face of the slide away from the claw, and when the claw is lifted, the inner side of the limiting protrusion abuts against the end face of the slide away from the claw.

[0009] According to the above-described liftable claw structure, a limiting protrusion is provided on the inner side of the first abutting part; when the claw is lifted, the limiting end of the limiting protrusion abuts against the second abutting part of the sliding part, and there is a gap between the limiting end of the limiting protrusion and the second abutting part of the sliding part when the claw is lifted.

[0010] According to the above-described liftable claw structure, the limiting protrusion is a bolt, the middle of the first abutment part is provided with a threaded hole, and the bolt is threaded into the threaded hole.

[0011] According to the above-described liftable claw structure, a connecting part is provided at the end of the sliding part away from the spring, and the other end of the claw part is fixedly connected to the connecting part.

[0012] According to the above-described liftable claw structure, the positioning structure is a positioning groove.

[0013] According to the above-described liftable claw structure, there are corresponding positioning recesses on the inner side of the first abutment and on the second abutment, and the two ends of the elastic reset member are respectively positioned in the two positioning recesses.

[0014] As another aspect, a lifting gripper assembly is characterized by comprising a lifting gripper structure as described above, wherein the number of the lifting gripper structures is set to two and they are arranged symmetrically, and the lower planes of the gripper portions of the two lifting gripper structures are located on the same horizontal plane.

[0015] The lifting claw structure and lifting gripper described in this invention have the following advantages: 1. It utilizes two opposing, liftable claw structures to clamp a workpiece located between them. When the two liftable claw structures move synchronously closer to each other, the inner walls of the positioning grooves of the two claw structures abut against the outer wall of the workpiece. While the claw structures continuously move to provide clamping force to the workpiece, the claw and sliding parts are subjected to a reverse force, causing the sliding part to move in the first direction along the oblique axis of the inclined guide part, so that the elastic reset member is compressed, and the claws are lifted to lift the workpiece clamped by the two claw structures, so that the workpiece does not contact the table surface. When the workpiece is transferred to the next station using the two claw structures, the bottom surface of the workpiece is not easily scratched.

[0016] 2. When the claw structure moves backward and away from the workpiece, the claw descends under the reset and unfolding action of the elastic reset component, so that the elastic reset component plays the role of resetting the claw. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the claw structure (I).

[0018] Figure 2 This is a schematic diagram of the claw structure (II).

[0019] Figure 3 This is a schematic diagram of the claw structure (III).

[0020] Figure 4 This is a schematic diagram of the claw structure (IV).

[0021] Figure 5 It is a structure formed by assembling two claw structures.

[0022] Figure 6 This is a schematic diagram of the lifting gripper assembly (I).

[0023] Figure 7 This is a schematic diagram of the lifting gripper assembly (II).

[0024] Reference numerals: 1. Horizontal base; 11. Slide table; 111. Base; 112. Cover plate; 113. First abutment part; 114. Inclined slide; 115. Threaded hole; 116. Inclined surface; 117. Inclined guide groove; 118. Extension part; 2. Claw part; 21. Positioning structure; 211. Positioning groove; 3. Sliding part; 31. Limiting protrusion; 32. Connecting part; 33. Second abutment part; 4. Elastic reset part; 5. Positioning recess; 6. Limiting protrusion; 61. Bolt; 100. Claw structure; 200. Table surface; 300. Workpiece; 400. Transverse linear servo slide table; 500. Longitudinal linear drive mechanism. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0026] Example 1: like Figures 1-5 As shown, the liftable claw structure described in this embodiment includes a horizontal base 1, a claw 2, and an elastic reset member 4. The horizontal base 1 and the claw 2 are both made of metal, generally a steel block structure. The elastic reset member 4 is generally a spring, and the number of springs can be set according to the actual situation. In order to make the reset stable, two springs are preferred.

[0027] A slide table 11 is provided on the horizontal base 1, and an inclined guide portion is provided on the slide table 11 at an angle relative to the horizontal base 1. One end of the claw portion 2 is provided with a positioning structure 21 for positioning the workpiece 300, and the other end is provided with a sliding portion 3 at an angle relative to the horizontal base 1, so that the sliding portion 3 is slidably connected to the inclined guide portion. The elastic reset member 4 is located between the first abutting portion 113 of the slide table 11 and the second abutting portion 33 of the sliding portion 3, and its two ends respectively abut against the first abutting portion 113 of the slide table 11 and the second abutting portion 33 of the sliding portion 3. When the sliding portion 3 moves in a first direction along the inclined axis of the inclined guide portion, the claw portion 2 rises, so that the elastic reset member 4 is in a compressed state. When the sliding portion 3 moves in a second direction along the inclined axis of the inclined guide portion, the claw portion 2 descends, so that the elastic reset member 4 is in an unfolded state. The angle between the inclined guide and the sliding part 3 and the horizontal base 1 is α, and the angle α ranges from 30° to 45°, preferably 35°.

[0028] In this embodiment, the inclined guide portion includes an inclined slide 114 inclined relative to the horizontal base 1. The inclined slide 114 is linearly arranged along the length of the slide table 11. The sliding portion 3 slides and engages within the inclined slide 114, allowing the sliding portion 3 to slide linearly within the inclined slide 114 to achieve the lifting and lowering of the claw portion 2. Alternatively, the inclined guide portion includes an inclined protrusion inclined relative to the horizontal base 1. The sliding portion 3 has an elongated recess inclined relative to the horizontal base 1 on one side facing the slide table 11. The elongated recess extends along the length of the sliding portion 3. The direction is set in a straight line, and the oblique protrusion is inserted into the elongated recess; or the oblique guide part includes an elongated recess that is inclined relative to the horizontal base 1. The elongated recess is set in a straight line along the length of the slide table 11. An elongated protrusion that is inclined relative to the horizontal base 1 is provided on one side of the sliding part 3 facing the slide table 11. The oblique protrusion is inserted into the oblique recess. The arrangement of the oblique protrusion and the oblique recess in cooperation makes the sliding part 3 obtain positioning and guiding sliding when sliding, so as to achieve the purpose of linear sliding. The oblique protrusion and the oblique recess can be a protrusion and a recess with a dovetail-shaped cross section, respectively.

[0029] Preferably, the slide table 11 includes a base 111 and a cover plate 112. The base 111 is provided with an inclined surface 116 that is inclined relative to the horizontal base 1. The inclined surface 116 is provided with an inclined guide groove 117 adapted to the sliding part 3, so that the sliding part 3 slides obliquely and fits into the inclined guide groove 117. The cover plate 112 is fixed to the inclined surface 116 by bolts 61 to at least partially cover the sliding part 3, so that the cover plate 112 and the inclined guide groove 117 combine to form an inclined slide 114. This structural arrangement makes it convenient to install the sliding part 3 in the inclined slide 114, and the structural design is also more reasonable.

[0030] Preferably, an extension 118 is formed on one end of the cover plate 112 away from the claw portion 2, and the first abutting portion 113 is disposed on the extension 118 on the cover plate 112. The cover plate 112 and the extension 118 are integral structures, and the first abutting portion 113 is protruding and extends toward the horizontal base 1, thereby facilitating the abutting of the spring end.

[0031] In this embodiment, a limiting protrusion 31 is formed on the end of the sliding part 3 away from the claw part 2. When the claw part 2 is raised, there is a gap between the inner side of the limiting protrusion 31 and the end face of the slide table 11 away from the claw part 2. When the claw part 2 is raised, the inner side of the limiting protrusion 31 abuts against the end face of the slide table 11 away from the claw part 2. The structure is designed to limit the position of the sliding part 3 after it is lowered, and prevent the sliding part 3 from coming out of the inclined slide 114.

[0032] Furthermore, a limiting protrusion 6 is provided on the inner side of the first abutting part 113. The limiting protrusion 6 is a bolt 61. A threaded hole 115 is provided in the middle of the first abutting part 113, and the bolt 61 is threaded into the threaded hole 115 so that the limiting position can be adjusted after rotating the bolt 61. When the claw part 2 is raised, the limiting end of the limiting protrusion 6 abuts against the second abutting part 33 of the sliding part 3. When the claw part 2 is raised, there is a gap between the limiting end of the limiting protrusion 6 and the second abutting part 33 of the sliding part 3.

[0033] In this embodiment, a connecting part 32 is provided at one end of the sliding part 3 away from the spring, and the other end of the claw part 2 is fixedly connected to the connecting part 32. The other end of the claw part 2 and the connecting part 32 are fixedly connected by a bolt 61, and the included angle between the claw part 2 and the sliding part 3 is an obtuse angle.

[0034] In this embodiment, the positioning structure 21 is a positioning groove 211. The shape of the positioning groove 211 is adapted to part of the shape of the pole post structure so that part of the pole post structure can be positioned in the positioning groove 211.

[0035] In this embodiment, corresponding positioning recesses 5 are provided on the inner side of the first abutment portion 113 and on the second abutment portion 33, and the two ends of the elastic reset member 4 are respectively positioned in the two positioning recesses 5. This structural arrangement ensures reliable spring positioning, and the number of positioning recesses 5 corresponds to the number of springs.

[0036] Example 2: like Figure 6 and Figure 7 As shown, the lifting gripper assembly described in this embodiment includes a lifting gripper structure 100 as described in Embodiment 1. The number of lifting gripper structures 100 is set to two, and they are arranged symmetrically. The lower planes of the gripper portions 2 of the two lifting gripper structures 100 are located on the same horizontal plane.

[0037] When the workpiece 300 located between the two opposing lifting claw structures 100 is clamped, the two lifting claw structures 100 move synchronously closer to each other so that the inner wall of the positioning groove 211 of the two claw structures 100 abuts against the outer wall of the workpiece 300. When the claw structure 100 continuously moves to provide clamping force to the workpiece 300, the claw part 2 and the sliding part 3 are subjected to the reverse force, causing the sliding part 3 to move in the first direction along the oblique axis of the oblique guide part, so that the elastic reset member 4 is compressed, and the claw part 2 is lifted to lift the workpiece 300 clamped by the two claw structures 100 so that the workpiece 300 does not contact the table surface 200. When the workpiece 300 is transferred to the next station using the two claw structures 100, the bottom surface of the workpiece 300 is not easily scratched. Each claw structure 100 is fixed on the slider of a transverse linear servo slide 400 in the direction of moving the workpiece 300 to the next station. Each transverse linear servo slide 400 is mounted on the sliding structure of a longitudinal linear drive mechanism 500 that drives the claw structure 100 to make longitudinal displacement along the table surface 200. The longitudinal linear drive mechanism 500 is a rodless cylinder or a linear servo slide.

Claims

1. A liftable claw structure, characterized in that, include: A horizontal base (1) is provided with a slide (11) and an inclined guide portion is provided on the slide (11) at an inclination relative to the horizontal base (1); The claw (2) has a positioning structure (21) for positioning the workpiece (300) at one end and a sliding part (3) that is inclined relative to the horizontal base (1) at the other end, so that the sliding part (3) is slidably connected to the inclined guide part. The elastic reset member (4) is located between the first abutting part (113) of the slide (11) and the second abutting part (33) of the sliding part (3), and its two ends respectively abut against the first abutting part (113) of the slide (11) and the second abutting part (33) of the sliding part (3); When the sliding part (3) moves in the first direction along the oblique axis of the oblique guide, the claw part (2) rises, so that the elastic reset member (4) is in a compressed state; when the sliding part (3) moves in the second direction along the oblique axis of the oblique guide, the claw part (2) falls, so that the elastic reset member (4) is in an unfolded state.

2. The liftable claw structure according to claim 1, characterized in that, The inclined guide section includes an inclined slide (114) that is inclined relative to the horizontal base (1). The inclined slide (114) is arranged in a straight line along the length direction of the slide table (11). The sliding part (3) slides and fits into the inclined slide (114).

3. The liftable claw structure according to claim 2, characterized in that, The slide (11) includes a base (111) and a cover plate (112). The base (111) is provided with an inclined surface (116) that is inclined relative to the horizontal base (1). The inclined surface (116) is provided with an inclined guide groove (117) that is adapted to the sliding part (3) so that the sliding part (3) slides obliquely and fits in the inclined guide groove (117). The cover plate (112) is fixed on the inclined surface (116) to at least partially cover the sliding part (3) so that the cover plate (112) and the inclined guide groove (117) combine to form an inclined slide (114).

4. The liftable claw structure according to claim 3, characterized in that, An extension (118) is formed on one end of the cover plate (112) away from the claw (2), and the first abutting part (113) is disposed on the extension (118) on the cover plate (112).

5. A liftable claw structure according to any one of claims 1-4, characterized in that, A limiting protrusion (31) is formed on the sliding part (3) away from the claw part (2); when the claw part (2) is raised, there is a gap between the inner side of the limiting protrusion (31) and the end face of the slide table (11) away from the claw part (2); when the claw part (2) is raised, the inner side of the limiting protrusion (31) abuts against the end face of the slide table (11) away from the claw part (2).

6. A liftable claw structure according to claim 1 or 4, characterized in that, A limiting protrusion (6) is provided on the inner side of the first abutting part (113); when the claw part (2) is raised, the limiting end of the limiting protrusion (6) abuts against the second abutting part (33) of the sliding part (3), and when the claw part (2) is raised, there is a gap between the limiting end of the limiting protrusion (6) and the second abutting part (33) of the sliding part (3).

7. The liftable claw structure according to claim 6, characterized in that, The limiting protrusion (6) is a bolt (61), and a threaded hole (115) is provided in the middle of the first abutment part (113), and the bolt (61) is threaded into the threaded hole (115).

8. The liftable claw structure according to claim 1, characterized in that, The sliding part (3) is provided with a connecting part (32) at one end away from the spring, and the other end of the claw part (2) is fixedly connected to the connecting part (32); the positioning structure (21) is a positioning groove (211).

9. The liftable claw structure according to claim 1, characterized in that, The inner side of the first abutting part (113) and the second abutting part (33) are respectively provided with corresponding positioning recesses (5), and the two ends of the elastic reset member (4) are respectively positioned in the two positioning recesses (5).

10. A lifting gripper assembly, characterized in that, The invention includes a liftable claw structure as described in any one of claims 1-8, wherein the number of liftable claw structures is set to two and they are arranged symmetrically, and the lower planes of the claw portions (2) of the two liftable claw structures are located on the same horizontal plane.

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