Engine cylinder transfer gripper

Abstract

The present invention discloses an engine cylinder transfer gripper, which belongs to the field of engine cylinder processing technology. The upper rotating shaft and the lower rotating shaft are parallel and rotatably mounted on a base frame; the two ends of the upper rotating shaft are respectively provided with upper threaded sections in opposite directions; the middle part of the lower rotating shaft is provided with two lower threaded sections in opposite directions; the right clamping jaw assembly is symmetrical with the left clamping jaw assembly; wherein the left clamping jaw assembly includes: an outer slider slidably mounted on the lower rotating shaft, meshingly connected with the upper rotating shaft; an inner slider slidably mounted on the upper rotating shaft, meshingly connected with the lower rotating shaft; the lower ends of the outer slider and the inner slider are respectively connected to the left clamping jaw through an outer support rod and an inner support rod. The present invention uses the threaded sections and optical axis sections on the upper and lower rotating shafts to enable the outer and inner sliders to move synchronously to adjust the spacing between the left and right clamping jaw assemblies, and also enables the inner slider to be adjusted separately to control the opening and closing of the left and right clamping jaw assemblies, so as to adapt to the grabbing and transfer of engine cylinders of different sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of engine cylinder processing, and in particular to an engine cylinder transfer gripper. Background Art

[0002] In the modern automotive manufacturing and machining industries, the handling and transfer of engine blocks is an integral part of the production process. With the continuous advancement of automation technology, automated transfer equipment has gradually become mainstream. Engine block transfer grippers are key components, and their design, performance, and stability directly impact the efficiency and product quality of the entire production line.

[0003] However, existing engine block transfer grippers still have some design deficiencies. For example, due to the fixed and rigid design of the jaws, some grippers often have difficulty adapting to cylinder blocks of different sizes when clamping the engine block, resulting in unstable or even impossible clamping. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the present invention provides an engine cylinder transfer gripper.

[0005] The present invention adopts the following technical solution: an engine cylinder transfer gripper, comprising a base frame;

[0006] An upper rotating shaft is rotatably mounted on the base frame; both ends of the upper rotating shaft are respectively provided with upper threaded sections in opposite directions, and the middle portion of the upper rotating shaft is an optical axis;

[0007] The lower rotating shaft is arranged parallel to and below the upper rotating shaft and is rotatably mounted on the base frame; the middle portion of the lower rotating shaft is provided with two opposite lower threaded sections, and both ends of the lower rotating shaft are optical axes;

[0008] A left clamping jaw assembly is mounted on the left ends of the upper rotating shaft and the lower rotating shaft;

[0009] A right clamping jaw assembly is mounted on the right end of the upper rotating shaft and the lower rotating shaft; the right clamping jaw assembly is symmetrical to the left clamping jaw assembly;

[0010] Wherein, the left clamping jaw assembly includes:

[0011] An outer sliding block is slidably mounted on the optical axis at the left end of the lower rotating shaft and is engaged with the upper threaded section at the left end of the upper rotating shaft;

[0012] An inner slider is slidably mounted on the optical axis on the left side of the middle portion of the upper rotating shaft and is engaged with the lower threaded section on the left side of the middle portion of the lower rotating shaft;

[0013] An outer support rod is fixed to the lower end of the outer slider; the lower end of the outer support rod is biased toward the inner slider;

[0014] An inner support rod is fixed to the lower end of the inner slider; the lower end of the inner support rod is biased toward the outer slider;

[0015] The left clamping jaw has one end hinged to the lower end of the outer support rod and the other end is provided with a long hole; the lower end of the inner support rod is fixed with a sliding pin that slides through the long hole, and the position of the sliding pin is lower than the hinge point between the outer support rod and the left clamping jaw.

[0016] It is further provided with a bayonet at the left end of the left clamping jaw;

[0017] The left pad is fitted in the bayonet and fixedly connected to the left clamp via bolts; the left pad has two symmetrical protrusions at one end away from the left clamp, and the end of the protrusion away from the left clamp is arc-shaped.

[0018] The outer support rods and the inner support rods are both L-shaped, and the lower ends of the outer support rods and the inner support rods are both provided with connecting ear plates.

[0019] The upper end of the base frame is provided with a plurality of threaded holes, and the lower end of the base frame is provided with a U-shaped opening. The ends of the upper rotating shaft and the lower rotating shaft are rotatably mounted on the two side walls of the U-shaped opening through bearings.

[0020] The left end of the upper rotating shaft is connected to the left driving motor, which is fixed on the left side wall of the U-shaped opening; the right end of the lower rotating shaft is connected to the right driving motor, which is fixed on the right side wall of the U-shaped opening.

[0021] A T-shaped center support plate fixed to the base frame is provided in the middle of the U-shaped opening. The middle portions of the upper rotating shaft and the lower rotating shaft pass through the center support plate respectively and are rotatably connected to the center support plate through bearings.

[0022] Sealing plates covering the side surfaces of the U-shaped opening are respectively fixed on both sides of the base frame.

[0023] A pair of wear-resistant plates are respectively provided on both sides of the left clamping jaw assembly and the right clamping jaw assembly, and slots matching the wear-resistant plates are provided on both side edges of the middle support plate and the two side walls of the U-shaped opening, and the two ends and the middle of the wear-resistant plates are respectively embedded in the corresponding slots; the sealing plate is pressed on the outer side of the wear-resistant plate, and the inner side of the wear-resistant plate is pressed on the surface of the outer slider and the inner slider in the left clamping jaw assembly and the right clamping jaw assembly.

[0024] The beneficial effects of the present invention are:

[0025] The present invention achieves horizontal drive and horizontal guidance of the outer and inner sliders through the cooperation of the threaded segments and the optical axis segments on the upper and lower rotating shafts. The design of the staggered threaded segments on the upper and lower rotating shafts allows the outer and inner sliders to move synchronously to adjust the spacing between the left and right clamping jaw assemblies, and also allows the inner slider to be adjusted independently to control the opening and closing of the left and right clamping jaw assemblies, thereby adapting to the grasping and transfer of engine cylinder blocks of different sizes.

[0026] The left and right clamping jaw assemblies can adjust the angle of the clamping jaws through the design of hinges and sliding pins to ensure that the clamping jaws can fit tightly against the inner wall of the cylinder body; friction self-locking is achieved by tilting at a large angle, and the pressure at the end of the clamping jaw is increased by the lever principle, thereby improving the stability of the grasping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 The present invention is a three-dimensional engine cylinder transfer gripper Figure 1 .

[0029] Figure 2 The present invention is a three-dimensional engine cylinder transfer gripper Figure 2 (The front sealing plate and a wear-resistant plate on the front are omitted in the figure).

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0031] Figure 4 The figure is a working schematic diagram of an engine cylinder transfer gripper according to the present invention.

[0032] Figure 5 It is a structural diagram of the left clamping jaw assembly.

[0033] Figure 6 It is a structural diagram of the left clamping jaw and the left pad.

[0034] Description of reference numerals:

[0035] 1. Base frame; 11. U-shaped opening; 12. Closing plate; 13. Middle support plate;

[0036] 2. Upper rotating shaft; 21. Upper threaded section;

[0037] 3. Lower rotating shaft; 31. Lower threaded section;

[0038] 4. Left clamping jaw assembly; 41. Outer slider; 42. Inner slider; 43. Outer support rod; 44. Inner support rod; 441. Sliding pin; 45. Left clamping jaw; 451. Long hole; 452. Bayonet; 46. Left pad; 461. Protrusion;

[0039] 5. Right clamping jaw assembly;

[0040] 6. Left drive motor;

[0041] 7. Right drive motor;

[0042] 8. Wear-resistant plate; 81. Card slot;

[0043] 9. Engine block. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Example 1:

[0046] like Figures 1 to 4 As shown, the present invention provides an engine cylinder transfer gripper. A plurality of threaded holes are provided at the upper end of the base frame 1 for connection to a robotic arm. The lower end of the base frame 1 has a U-shaped opening 11, and the ends of the upper rotating shaft 2 and the lower rotating shaft 3 are rotatably mounted on the two side walls of the U-shaped opening 11 through bearings. The lower rotating shaft 3 is arranged parallel to the lower side of the upper rotating shaft 2. The left end of the upper rotating shaft 2 is connected to the left drive motor 6, and the left drive motor 6 is fixed to the outer side of the left side wall of the U-shaped opening 11 through a flange. The right end of the lower rotating shaft 3 is connected to the right drive motor 7, and the right drive motor 7 is fixed to the outer side of the right side wall of the U-shaped opening 11 through a flange. The left drive motor 6 and the right drive motor 7 are of the same model.

[0047] The centers of the upper rotating shaft 2, the lower rotating shaft 3, and the base frame 1 are on the same straight line, and the upper rotating shaft 2, the lower rotating shaft 3, and the base frame 1 are symmetrical about the center. The upper rotating shaft 2 has a reverse upper thread section 21 at each end, and the middle of the upper rotating shaft 2 is the optical axis. The lower rotating shaft 3 has two reverse lower thread sections 31 at the middle, and the two ends of the lower rotating shaft 3 are the optical axes. Figure 3 As shown, the two upper thread segments 21 and the two lower thread segments 31 are staggered up and down, and the pitch and diameter of the upper thread segments 21 and the lower thread segments 31 are consistent.

[0048] Combine Figures 2 to 5As shown, the left clamping jaw assembly 4 is installed on the left side of the upper rotating shaft 2 and the lower rotating shaft 3, and the right clamping jaw assembly 5 is installed on the right side of the upper rotating shaft 2 and the lower rotating shaft 3. The right clamping jaw assembly 5 is symmetrical with the left clamping jaw assembly 4. This embodiment takes the left clamping jaw assembly 4 as an example:

[0049] The left clamping jaw assembly 4 comprises an outer slider 41 and an inner slider 42. The outer slider 41 has a threaded hole at its upper end and a smooth hole at its lower end. The smooth hole at the lower end of the outer slider 41 is slidably mounted on the smooth axis at the left end of the lower shaft 3. The threaded hole at the upper end of the outer slider 41 engages with the upper threaded section 21 at the left end of the upper shaft 2. During use, the outer slider 41 is driven by the upper shaft 2, which provides guidance and anti-rotation functions.

[0050] The inner slider 42 has a light hole at its upper end, and the outer slider 41 has a threaded hole at its lower end. The light hole at the upper end of the inner slider 42 is slidably mounted on the light axis on the left side of the middle portion of the upper shaft 2, and the threaded hole at the lower end of the inner slider 42 engages with the lower threaded section 31 on the left side of the middle portion of the lower shaft 3. During use, the inner slider 42 is driven by the lower shaft 3, while the upper shaft 2 provides guidance and anti-rotation functions.

[0051] The outer support rod 43 is bolted to the lower end of the outer slider 41, and the inner support rod 44 is bolted to the lower end of the inner slider 42. Both the outer support rod 43 and the inner support rod 44 are L-shaped, with the lower end of the outer support rod 43 offset toward the inner slider 42, and the lower end of the inner support rod 44 offset toward the outer slider 41. This creates a distance between the outer slider 41 and the inner slider 42, facilitating the left-right movement of the outer slider 41 and the inner slider 42 along the upper shaft 2 and the lower shaft 3.

[0052] The lower ends of the outer support rod 43 and the inner support rod 44 are both provided with connecting lugs, and the left clamping jaw 45 is arranged in the connecting lugs. One end of the left clamping jaw 45 is hinged to the lower end of the outer support rod 43 via a rotating shaft, and the other end of the left clamping jaw 45 is provided with a long hole 451. A sliding pin 441 is fixed to the lower end of the inner support rod 44, and the sliding pin 441 slides through the long hole 451. The position of the sliding pin 441 is lower than the position of the hinge shaft between the outer support rod 43 and the left clamping jaw 45. When the outer support rod 43 and the inner support rod 44 move relative to each other, the angle of the left clamping jaw 45 can be adjusted so that the left end of the left clamping jaw 45 rests on the inner wall of the engine cylinder block 9. In addition, the position of the sliding pin 441 is also far away from the rotating shaft, and the lever principle is used to increase the pressure on the left end of the left clamping jaw 45.

[0053] Recombination Figure 6As shown, the left end of the left clamping jaw 45 is provided with a slot 452 for mounting a left pad 46. The left pad 46 fits within the slot 452 and is fixed to the left clamping jaw 45 via bolts. The end of the left pad 46, facing away from the left clamping jaw 45, has two symmetrical protrusions 461. The protrusions 461 are arc-shaped at the end facing away from the left clamping jaw 45, with the arcs centered at the same point.

[0054] Working principle:

[0055] like Figure 3 and Figure 4 As shown, first, the left drive motor 6 and the right drive motor 7 are started simultaneously, and the upper rotating shaft 2 and the lower rotating shaft 3 begin to rotate. Taking the left clamping jaw assembly 4 as an example, the outer slider 41 and the inner slider 42 move at the same speed and in the same direction, and the distance between the left clamping jaw assembly 4 and the center can be adjusted; and the right clamping jaw assembly 5 is symmetrical with the left clamping jaw assembly 4. Therefore, the distance between the left clamping jaw assembly 4 and the right clamping jaw assembly 5 is adjusted, so that the transfer gripper can adapt to different sizes of engine cylinder blocks 9;

[0056] After adjusting the approximate distance between the left clamping jaw assembly 4 and the right clamping jaw assembly 5, move the left clamping jaw assembly 4 and the right clamping jaw assembly 5 into the two cylinders in the engine block 9 respectively. The position of the engine block 9 should not be stuck, and the engine block 9 should be allowed to move to a certain extent.

[0057] Then the right drive motor 7 is started, the lower shaft 3 begins to rotate, and the inner sliders 42 in the left clamping jaw assembly 4 and the right clamping jaw assembly 5 begin to move inward at the same speed; taking the left clamping jaw assembly 4 as an example, at this time, the sliding pin 441 at the lower end of the inner support rod 44 is opened to push the left clamping jaw 45 to rotate, so that the left pad 46 at the left end of the left clamping jaw 45 rests on the inner wall of the engine cylinder block 9. Similarly, the right pad in the right clamping jaw assembly 5 will also rest on the inner wall of the engine cylinder block 9. At this time, maintaining a certain output torque of the right drive motor 7, the left clamping jaw assembly 4 and the right clamping jaw assembly 5 will clamp the engine cylinder block 9, and finally transfer it to the predetermined position through the robotic arm.

[0058] Example 2:

[0059] Based on the above embodiment 1, combined with Figures 1 to 4 As shown, to enhance the stability of the outer and inner sliders 41 and 42, a T-shaped center support plate 13 is positioned in the center of the U-shaped opening 11. The upper end of the center support plate 13 is bolted to the base frame 1. Two mounting holes are defined at the lower end of the center support plate 13. The middle portions of the upper and lower shafts 2 and 3 pass through the mounting holes in the center support plate 13 and are rotatably connected to the center support plate 13 via bearings. Seal plates 12 are fixed to either side of the base frame 1, covering the sides of the U-shaped opening 11. These seal plates 12 enclose the upper and lower shafts 2 and 3, as well as the left and right clamping jaw assemblies 4 and 5.

[0060] A pair of wear-resistant plates 8 are provided on both sides of the left clamping jaw assembly 4 and the right clamping jaw assembly 5. Slots 81 that cooperate with the wear-resistant plates 8 are provided on both sides of the center support plate 13 and the side walls of the U-shaped opening 11. The ends and the middle of the wear-resistant plate 8 are respectively embedded in the corresponding slots 81, and the sealing plate 12 is pressed against the outside of the wear-resistant plate 8 to fix the wear-resistant plate 8 relative to the base frame 1. The wear-resistant plate 8 is made of copper plate and is pressed against the side surfaces of the upper and lower ends of the outer slider 41 and the inner slider 42, providing stable sliding support for the outer slider 41 and the inner slider 42.

[0061] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An engine cylinder transfer gripper, comprising a base frame (1); It is characterized in that Also includes: An upper rotating shaft (2) is rotatably mounted on the base frame (1); opposite upper threaded sections (21) are respectively provided at both ends of the upper rotating shaft (2), and the middle portion of the upper rotating shaft (2) is an optical axis; The lower rotating shaft (3) is arranged parallel to the lower side of the upper rotating shaft (2) and is rotatably mounted on the base frame (1); the middle of the lower rotating shaft (3) is provided with two opposite lower thread sections (31), and both ends of the lower rotating shaft (3) are optical axes; A left clamping jaw assembly (4) is mounted on the left ends of the upper rotating shaft (2) and the lower rotating shaft (3); A right clamping jaw assembly (5) is mounted on the right end of the upper rotating shaft (2) and the lower rotating shaft (3); the right clamping jaw assembly (5) is symmetrical to the left clamping jaw assembly (4); Wherein, the left clamping jaw assembly (4) comprises: An outer slider (41) is slidably mounted on the optical axis at the left end of the lower rotating shaft (3) and is engaged with the upper threaded section (21) at the left end of the upper rotating shaft (2); An inner slider (42) is slidably mounted on the optical axis on the left side of the middle portion of the upper rotating shaft (2) and is meshedly connected with the lower threaded section (31) on the left side of the middle portion of the lower rotating shaft (3); An outer support rod (43) is fixed to the lower end of the outer slider (41); the lower end of the outer support rod (43) is biased toward the inner slider (42); An inner support rod (44) is fixed to the lower end of the inner slider (42); the lower end of the inner support rod (44) is biased toward the outer slider (41); The left clamping jaw (45) has one end hinged to the lower end of the outer support rod (43) and the other end is provided with a long hole (451); the lower end of the inner support rod (44) is fixed with a sliding pin (441) which slides through the long hole (451), and the position of the sliding pin (441) is lower than the hinge point between the outer support rod (43) and the left clamping jaw (45).

2. The engine cylinder transfer gripper according to claim 1, characterized in that: A bayonet (452) is provided at the left end of the left clamping jaw (45); The left pad (46) is fitted in the bayonet (452) and fixedly connected to the left clamp (45) via bolts; the left pad (46) has two symmetrical protrusions (461) at one end away from the left clamp (45), and the protrusions (461) are arc-shaped at one end away from the left clamp (45).

3. The engine cylinder transfer gripper according to claim 1, characterized in that: The outer support rod (43) and the inner support rod (44) are both L-shaped, and the lower ends of the outer support rod (43) and the lower ends of the inner support rod (44) are both provided with connecting ear plates.

4. The engine cylinder transfer gripper according to claim 1, characterized in that: The upper end of the base frame (1) is provided with a plurality of threaded holes, and the lower end of the base frame (1) has a U-shaped opening (11). Both ends of the upper rotating shaft (2) and the lower rotating shaft (3) are rotatably mounted on two side walls of the U-shaped opening (11) through bearings.

5. The engine cylinder transfer gripper according to claim 4, characterized in that: The left end of the upper rotating shaft (2) is connected to a left drive motor (6), which is fixed to the left side wall of the U-shaped opening (11); the right end of the lower rotating shaft (3) is connected to a right drive motor (7), which is fixed to the right side wall of the U-shaped opening (11).

6. The engine cylinder transfer gripper according to claim 4, characterized in that: A T-shaped center support plate (13) fixed to the base frame (1) is provided in the middle of the U-shaped opening (11); the middle portions of the upper rotating shaft (2) and the lower rotating shaft (3) respectively pass through the center support plate (13) and are rotatably connected to the center support plate (13) via bearings.

7. The engine cylinder transfer gripper according to claim 6, characterized in that: Sealing plates (12) covering the sides of the U-shaped opening (11) are respectively fixed on both sides of the base frame (1).

8. The engine cylinder transfer gripper according to claim 7, characterized in that: A pair of wear-resistant plates (8) are respectively provided on both sides of the left clamping jaw assembly (4) and the right clamping jaw assembly (5); slots (81) cooperating with the wear-resistant plates (8) are provided on both side edges of the middle support plate (13) and the two side walls of the U-shaped opening (11); the two ends and the middle of the wear-resistant plates (8) are respectively embedded in the corresponding slots (81); the sealing plate (12) is pressed on the outer side of the wear-resistant plate (8), and the inner side of the wear-resistant plate (8) is pressed on the surface of the outer slider (41) and the inner slider (42) in the left clamping jaw assembly (4) and the right clamping jaw assembly (5).

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