An automatic press-fitting device for engine block bearings

Abstract

The present invention relates to the field of combined processing technology, and particularly relates to an automatic press-fitting device for engine block bearings, which includes a frame, an XY-axis servo mechanism, a placement plate, two press-fitting jigs, and a combination assembly. The placement plate has a plurality of positioning holes. The press-fitting jig includes a lower die, a plurality of columns, and an upper die. The lower die includes a plurality of support columns, a lower template, and a plurality of force-receiving blocks. The press-fitting jig is placed on the placement plate. The combination assembly removes the upper die, then places the engine block on the lower die, and installs a plurality of bearings on a plurality of press heads. Then the combination assembly installs the upper die on the plurality of columns. The XY-axis servo mechanism is started, and the press-fitting jig and the engine block are moved to the press-fitting device together. After the press-fitting is completed, they are sent back to the placement plate. The combination assembly removes the upper die, and then the engine block with the bearings installed can be taken away. By using the above method for automatic press-fitting, the efficiency of the press-fitting operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of combined processing, and particularly relates to an automatic press-fitting device for engine block bearings. Background Art

[0002] During the current engine assembly process, the bearing press-fitting process is often encountered. The quality of the bearing press-fitting process is the key to affecting the engine performance. In the current common bearing press-fitting method, multiple bearings need to be press-fitted on each engine block. And the geometric dimensions such as the size, interference amount, and roughness of each bearing are different. Therefore, the press-fitting force and other parameters for each bearing also need to be different. At the same time, multiple press-fittings need to be performed on each block to complete.

[0003] In the current press-fitting process of the general hydraulic press, the operator usually manually moves the press-fitting workpiece, and the press-fitting efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic press-fitting device for engine block bearings to improve the press-fitting operation efficiency.

[0005] To achieve the above purpose, the present invention provides an automatic press-fitting device for engine block bearings, including a frame, an XY-axis servo mechanism, a placement plate, two press-fitting jigs, and a combination component. The XY-axis servo mechanism is arranged on the frame, the placement plate is arranged on the frame, the placement plate has a plurality of positioning holes, the combination component is arranged on the frame, the press-fitting jig includes a lower die, a plurality of columns, and an upper die. The lower die is placed on the placement plate, the plurality of columns are respectively fixedly connected to the lower die and are respectively located on the top of the lower die. The upper die is respectively slidably connected to the plurality of columns and is respectively penetrated by the plurality of columns. The lower die includes a plurality of support columns, a lower template, and a plurality of force-receiving blocks. Each support column is inserted into a positioning hole, the lower template is respectively fixedly connected to the plurality of support columns and is located on the top of the plurality of support columns. The plurality of force-receiving blocks are respectively arranged on the top of the lower template. The upper die includes an upper template and a plurality of press heads. The upper template is respectively slidably connected to the plurality of columns and is respectively penetrated by the plurality of columns. The plurality of press heads are respectively arranged on the upper template.

[0006] Wherein, each clamp of the XY-axis servo mechanism has two first positioning pin holes, and the lower die further includes four first positioning pins, and the four first positioning pins are respectively fixedly connected to the lower template and are respectively located on the sides of the lower template.

[0007] Among them, the combined component includes a carrier plate, a sliding plate, two combined mechanisms and a lifting cylinder. The carrier plate is fixedly connected to the frame and is located at the top of the frame. The sliding plate is slidably arranged on the side of the carrier plate. The two combined mechanisms are respectively arranged on the sliding plate. The lifting cylinder is fixedly connected to the carrier plate and is located on the side of the carrier plate. The piston rod of the lifting cylinder is fixedly connected to the sliding plate.

[0008] Among them, the combined mechanism includes an outer mounting seat, an inner mounting seat, a rotating frame, a rotating cylinder, a clamping cylinder and two clamping blocks. The outer mounting seat is fixedly connected to the sliding plate and is located on the side of the sliding plate. The inner mounting seat is fixedly connected to the sliding plate and is located on the side of the sliding plate. The rotating frame is rotatably connected to the outer mounting seat and is rotatably connected to the inner mounting seat, and is located between the outer mounting seat and the inner mounting seat. The rotating cylinder is fixedly connected to the outer mounting seat and is located on one side of the outer mounting seat. The rotating shaft of the rotating cylinder is fixedly connected to the rotating frame. The clamping cylinder is fixedly connected to the rotating frame and is located on the side of the rotating frame. The two clamping blocks are respectively slidably connected to the rotating frame and are respectively fixedly connected to the clamping cylinder, and are respectively located on both sides of the clamping cylinder. The clamping block has a clamping groove.

[0009] Among them, the upper template has four second positioning pin holes. The combined mechanism further includes four second positioning pins, and two of the second positioning pins are arranged on each clamping block.

[0010] An automatic bearing pressing equipment for an engine housing of the present invention, wherein the upper die is composed of a plurality of the pressing heads and the upper template, and the arrangement of the plurality of the pressing heads is arranged according to the positions of the bearings to be installed. The upper die is slidably arranged above the lower die through a plurality of the columns and can be slid off. The lower die is positioned by the support columns and the positioning holes and is placed on the placing plate. The force receiving blocks cooperate with the pressing heads to press the bearings. A plurality of the columns are provided for guiding to prevent the upper die from tilting during the pressing process. The combination assembly is used to remove the upper die or combine the upper die onto the plurality of the columns. The XY-axis servo mechanism has two clamps, which can clamp the pressing fixture and move it to the position of the pressing equipment. During use, the support columns of the pressing fixture are inserted into the corresponding positioning holes, so as to be positioned and placed on the placing plate. The combination assembly removes the upper die, then positions and places the engine housing on the lower die, and sequentially installs a plurality of bearings onto the plurality of the pressing heads. The combination assembly is started again to install the upper die onto the plurality of the columns. At this time, all the bearings correspond to the positions where the bearings need to be installed on the engine housing. The XY-axis servo mechanism is started to clamp the lower template, and the pressing fixture and the engine housing are moved to the pressing equipment together to perform the pressing of the bearings. After the pressing is completed, it is sent back to the placing plate. The combination assembly removes the upper die, and finally takes away the engine housing with the installed bearings and waits for the pressing of the next engine housing and bearings. By using the above method for automatic pressing, the pressing operation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 FIG. is a schematic structural diagram of the overall automatic bearing pressing equipment for an engine housing provided by the present invention.

[0013] Figure 2 is Figure 1 A partial enlarged view of detail A.

[0014] Figure 3 FIG. is a right view of the overall automatic bearing pressing equipment for an engine housing provided by the present invention.

[0015] Figure 4 FIG. is a schematic structural diagram of the pressing fixture of the automatic bearing pressing equipment for an engine housing provided by the present invention.

[0016] In the figure: 101 - frame, 102 - XY-axis servo mechanism, 103 - placement plate, 104 - press-fitting fixture, 105 - combination assembly, 106 - positioning hole, 107 - lower die, 108 - column, 109 - upper die, 110 - support column, 111 - lower template, 112 - force-bearing block, 113 - upper template, 114 - pressing head, 115 - first positioning pin hole, 116 - first positioning pin, 117 - bearing plate, 118 - slide plate, 119 - combination mechanism, 120 - lifting cylinder, 121 - outer mounting seat, 122 - inner mounting seat, 123 - rotating frame, 124 - rotating cylinder, 125 - clamping cylinder, 126 - clamping block, 127 - clamping groove, 128 - second positioning pin hole, 129 - second positioning pin. Specific embodiments

[0017] The embodiments of the present invention 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 intended to explain the present invention and should not be construed as limiting the present invention.

[0018] Please refer to Figures 1 to 4 , the present invention provides an automatic press-fitting device for engine block bearings:

[0019] It includes a frame 101, an XY-axis servo mechanism 102, a placement plate 103, two press-fitting fixtures 104 and a combination assembly 105. The XY-axis servo mechanism 102 is arranged on the frame 101, the placement plate 103 is arranged on the frame 101, the placement plate 103 has a plurality of positioning holes 106, the combination assembly 105 is arranged on the frame 101, the press-fitting fixture 104 includes a lower die 107, a plurality of columns 108 and an upper die 109. The lower die 107 is placed on the placement plate 103, the plurality of columns 108 are respectively fixedly connected to the lower die 107 and are respectively located at the top of the lower die 107. The upper die 109 is respectively slidably connected to the plurality of columns 108 and is respectively penetrated by the plurality of columns 108. The lower die 107 includes a plurality of support columns 110, a lower template 111 and a plurality of force-bearing blocks 112. Each support column 110 is inserted into a positioning hole 106, the lower template 111 is respectively fixedly connected to the plurality of support columns 110 and is located at the top of the plurality of support columns 110. The plurality of force-bearing blocks 112 are respectively arranged on the top of the lower template 111. The upper die 109 includes an upper template 113 and a plurality of pressing heads 114. The upper template 113 is respectively slidably connected to the plurality of columns 108 and is respectively penetrated by the plurality of columns 108. The plurality of pressing heads 114 are respectively arranged on the upper template 113.

[0020] In this embodiment, two of the press-fitting jigs 104 are provided, which are suitable for press-fitting bearings of two engine cases. The upper die 109 is composed of a plurality of the pressing heads 114 and the upper template 113. The arrangement of the plurality of the pressing heads 114 is arranged according to the positions of the bearings to be installed. The upper die 109 is slidably arranged above the lower die 107 through a plurality of the columns 108 and can be slid off. The lower die 107 is positioned by the cooperation of the support columns 110 and the positioning holes 106 and is placed on the placement plate 103. The force-receiving blocks 112 cooperate with the pressing heads 114 to press-fit the bearings. A plurality of the columns 108 are provided for guiding to prevent the upper die 109 from tilting during the press-fitting process. The combination assembly 105 is used to remove the upper die 109 or combine the upper die 109 onto the plurality of the columns 108. The XY-axis servo mechanism 102 has two clamps, which can clamp the press-fitting jig 104 and move it to the position of the press-fitting equipment. During use, the support columns 110 of the press-fitting jig 104 are inserted into the corresponding positioning holes 106, so as to be positioned and placed on the placement plate 103. The combination assembly 105 removes the upper die 109, then positions and places the engine case on the lower die 107, and sequentially installs a plurality of bearings onto the plurality of the pressing heads 114. The combination assembly 105 is started again to install the upper die 109 onto the plurality of the columns 108. At this time, all the bearings correspond to the positions of the bearings to be installed on the engine case. The XY-axis servo mechanism 102 is started to clamp the lower template 111, and the press-fitting jig 104 and the engine case are moved to the press-fitting equipment together to perform the press-fitting of the bearings. After the press-fitting is completed, it is sent back to the placement plate 103. The combination assembly 105 removes the upper die 109, and finally takes away the engine case with the bearings installed, waiting for the press-fitting of the next engine case and bearings. By using the above method for automatic press-fitting, the efficiency of the press-fitting operation is improved.

[0021] Further, each clamp of the XY-axis servo mechanism 102 has two first positioning pin holes 115. The lower die 107 further includes four first positioning pins 116. The four first positioning pins 116 are respectively fixedly connected to the lower template 111 and are respectively located on the sides of the lower template 111.

[0022] In this embodiment, two of the first positioning pins 116 are provided on each of the left and right sides of the lower template 111. When the clamp of the XY-axis servo mechanism 102 clamps the lower template 111, the first positioning pins 116 just pass through the first positioning pin holes 115, making the clamping more stable and firm while positioning.

[0023] Further, the combination component 105 includes a carrier plate 117, a slide plate 118, two combination mechanisms 119, and a lifting cylinder 120. The carrier plate 117 is fixedly connected to the frame 101 and is located at the top of the frame 101. The slide plate 118 is slidably disposed on the side of the carrier plate 117. The two combination mechanisms 119 are respectively disposed on the slide plate 118. The lifting cylinder 120 is fixedly connected to the carrier plate 117 and is located on the side of the carrier plate 117. The piston rod of the lifting cylinder 120 is fixedly connected to the slide plate 118.

[0024] In this embodiment, the carrier plate 117 is disposed above the placement plate 103 and is provided with a slide rail thereon for slidably mounting the slide plate 118. The slide plate 118 can be driven by the lifting cylinder 120 to slide up and down, thereby driving the two combination mechanisms 119 to move up and down. The two combination mechanisms 119 correspond to the two press-fitting jigs 104. The combination mechanism 119 is used to clamp the upper template 113. When it is necessary to remove the upper die 109, the lifting cylinder 120 drives the slide plate 118 to move downward, and the combination mechanism 119 descends to clamp the upper template 113. Then the lifting cylinder 120 moves upward to remove the entire upper die 109.

[0025] Further, the combination mechanism 119 includes an outer mounting seat 121, an inner mounting seat 122, a rotating frame 123, a rotating cylinder 124, a clamping cylinder 125, and two clamping blocks 126. The outer mounting seat 121 is fixedly connected to the slide plate 118 and is located on the side of the slide plate 118. The inner mounting seat 122 is fixedly connected to the slide plate 118 and is located on the side of the slide plate 118. The rotating frame 123 is rotatably connected to the outer mounting seat 121 and is rotatably connected to the inner mounting seat 122 and is located between the outer mounting seat 121 and the inner mounting seat 122. The rotating cylinder 124 is fixedly connected to the outer mounting seat 121 and is located on one side of the outer mounting seat 121. The rotating shaft of the rotating cylinder 124 is fixedly connected to the rotating frame 123. The clamping cylinder 125 is fixedly connected to the rotating frame 123 and is located on the side of the rotating frame 123. The two clamping blocks 126 are respectively slidably connected to the rotating frame 123, are respectively fixedly connected to the clamping cylinder 125, and are respectively located on both sides of the clamping cylinder 125. The clamping block 126 has a clamping groove 127.

[0026] In this embodiment, the outer mounting base 121 and the inner mounting base 122 cooperate to rotatably mount the rotating frame 123. The rotating frame 123 is driven to rotate by the rotary cylinder 124. The clamping cylinder 125 is provided on the rotating frame 123, and the clamping cylinder 125 is used to drive the two clamping blocks 126 to perform a clamping action. The initial positions of the two clamping blocks 126 are at a 45-degree angle to the horizontal plane. When the upper die 109 needs to be removed, the rotary cylinder 124 drives the rotating frame 123, thereby driving the two clamping blocks 126 to rotate counterclockwise by 135 degrees, so that the two clamping blocks 126 are perpendicular to the upper template 113. Then the lifting cylinder 120 drives the slide plate 118 to slide down, so that the two clamping blocks 126 descend to both sides of the upper template 113. Then the clamping cylinder 125 drives the two clamping blocks 126 to clamp the upper template 113. The upper template 113 is just stuck in the clamping groove 127. Then the lifting cylinder 120 drives the slide plate 118 to slide up, thereby lifting the upper die 109 and disengaging it from the plurality of columns 108. Finally, the rotary cylinder 124 rotates, driving the two clamping blocks 126 to rotate, so that the two clamping blocks 126 rotate clockwise by 135 degrees to a position at a 45-degree angle to the horizontal plane. At this time, the plurality of pressure heads 114 also slope upward, facilitating the positioning and installation of the bearing onto the pressure heads 114. When the upper die 109 needs to be placed back onto the plurality of columns 108, the rotary cylinder 124 drives the rotating frame 123, thereby driving the two clamping blocks 126 to rotate counterclockwise by 135 degrees, so that the two clamping blocks 126 are perpendicular to the horizontal plane. At this time, the upper template 113 is parallel to the lower template 111. Then the lifting cylinder 120 drives the upper die 109 to slowly descend and install it onto the plurality of columns 108. Finally, the two clamping blocks 126 are released.

[0027] Further, the upper template 113 has four second positioning pin holes 128, and the combination mechanism 119 further includes four second positioning pins 129. Two of the second positioning pins 129 are provided on each of the clamping blocks 126.

[0028] In this embodiment, both the left and right sides of the upper template 113 have two of the second positioning pin holes 128. When the clamping blocks 126 clamp the upper template 113, the second positioning pins 129 also just insert into the second positioning pin holes 128, making the clamping more stable and firm while positioning.

[0029] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. An automatic press-fitting device for engine block bearings, characterized in that it includes a frame, an XY-axis servo mechanism, a placement plate, two press-fitting jigs and a combination assembly. The XY-axis servo mechanism is arranged on the frame, the placement plate is arranged on the frame, the placement plate has a plurality of positioning holes, the combination assembly is arranged on the frame, the press-fitting jig includes a lower die, a plurality of columns and an upper die. The lower die is placed on the placement plate, the plurality of columns are respectively fixedly connected to the lower die and are respectively located at the top of the lower die. The upper die is respectively slidably connected to the plurality of columns and is respectively penetrated by the plurality of columns. The lower die includes a plurality of support columns, a lower template and a plurality of force-receiving blocks. Each support column is inserted into one of the positioning holes. The lower template is respectively fixedly connected to the plurality of support columns and is located at the top of the plurality of support columns. The plurality of force-receiving blocks are respectively arranged on the top of the lower template. The upper die includes an upper template and a plurality of press heads. The upper template is respectively slidably connected to the plurality of columns and is respectively penetrated by the plurality of columns. The plurality of press heads are respectively arranged on the upper template; Each clamp of the XY-axis servo mechanism has two first positioning pin holes. The lower die further includes four first positioning pins, and the four first positioning pins are respectively fixedly connected to the lower template and are respectively located on the sides of the lower template; The combination assembly includes a carrier plate, a sliding plate, two combination mechanisms and a lifting cylinder. The carrier plate is fixedly connected to the frame and is located at the top of the frame. The sliding plate is slidably arranged on the side of the carrier plate. The two combination mechanisms are respectively arranged on the sliding plate. The lifting cylinder is fixedly connected to the carrier plate and is located on the side of the carrier plate. The piston rod of the lifting cylinder is fixedly connected to the sliding plate; The combination mechanism includes an outer mounting seat, an inner mounting seat, a rotating frame, a rotating cylinder, a clamping cylinder and two clamping blocks. The outer mounting seat is fixedly connected to the sliding plate and is located on the side of the sliding plate. The inner mounting seat is fixedly connected to the sliding plate and is located on the side of the sliding plate. The rotating frame is rotatably connected to the outer mounting seat and is rotatably connected to the inner mounting seat and is located between the outer mounting seat and the inner mounting seat. The rotating cylinder is fixedly connected to the outer mounting seat and is located on one side of the outer mounting seat. The rotating shaft of the rotating cylinder is fixedly connected to the rotating frame. The clamping cylinder is fixedly connected to the rotating frame and is located on the side of the rotating frame. The two clamping blocks are respectively slidably connected to the rotating frame and are respectively fixedly connected to the clamping cylinder and are respectively located on both sides of the clamping cylinder. The clamping block has a clamping groove.

2. The automatic press-fitting device for engine block bearings according to claim 1, characterized in that the upper template has four second positioning pin holes, and the combination mechanism further includes four second positioning pins, and two of the second positioning pins are arranged on each clamping block.

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