Surface polishing equipment for automobile part mold

Abstract

The invention provides surface polishing equipment for an automobile part mold, and relates to polishing equipment, the surface polishing equipment comprises a polishing box and a conveying rail set, a jacking cylinder is installed at the bottom of the polishing box, and a horizontal supporting plate used for bearing a material containing tool is installed at the driving end of the jacking cylinder; the conveying rail set comprises a linear rail and a transition plate set installed on the linear rail in a sliding connection mode, a material containing tool containing a to-be-polished mold is pushed to the transition plate set after being fed into the feeding lifting table, and the transition plate set is used for driving the material containing tool to move to the position above the polishing box. And after polishing is completed, the jacking cylinder drives the material containing tool to ascend, the transition plate set stretches into the position below the material containing tool again to bear the material containing tool, then the transition plate set moves to the discharging bearing set along the linear rail, and the discharging bearing set is driven by the jacking cylinder to descend into the polishing box to stand. In the whole production line process of polishing, the clamping jaw does not need to be in direct contact for clamping, and therefore clamping and carrying damage to the mold is avoided.

Description

Technical Field

[0001] The invention relates to a polishing device, in particular to a surface polishing device used for automobile part moulds. Background Art

[0002] Surface polishing of automotive parts molds is one of the key processes to improve mold quality and appearance; the main purpose of polishing is: 1. To improve the finish and smoothness of the mold surface to meet the precision and appearance requirements of automotive parts. 2. To remove defects on the mold surface, such as scratches, burrs, oxide layers, etc., to improve the service life and performance of the mold; and there are various methods for surface polishing of automotive parts molds, including mechanical polishing, chemical polishing, etc. Mechanical polishing generally relies on cutting and plastic deformation of the material surface to remove the polished convex parts to obtain a smooth surface, mostly manual operation, and the pressure during polishing also needs to be moderate to avoid scratching the mold surface. Therefore, for large-scale automotive parts molds with complex surfaces, the operation is time-consuming and laborious. Therefore, chemical polishing is mostly used for this type of polishing. Chemical polishing is to make the microscopic convex parts of the material surface in the chemical medium dissolve preferentially over the concave parts, thereby obtaining a smooth surface. It can handle workpieces with complex shapes and is also highly efficient.

[0003] When performing surface polishing on a mold, it is first necessary to pre-treat the mold before placing it in the polishing liquid, specifically including removing impurities such as oil, dust, etc. on the surface of the mold, and performing necessary cleaning and drying. Then, a container suitable for the size and shape of the mold is selected to ensure that the mold can be completely immersed in the polishing liquid. The container should have good sealing and corrosion resistance to prevent the polishing liquid from leaking or being corroded. The temperature and concentration of the polishing liquid can also be adjusted according to the instructions for use of the polishing liquid and the requirements of the mold material. When the mold is slowly immersed in the polishing liquid, it is necessary to ensure that all parts of the mold can be evenly contacted with the polishing liquid. During the immersion process, it is also necessary to avoid collision between the mold and the container wall or impurities in the polishing liquid to avoid scratching the mold surface. In the prior art, as shown in a patent for a finishing device for the surface of mold steel (Announcement No. CN216940147U), a finishing device for the surface of mold steel is disclosed, which recovers the polishing liquid through a polishing liquid recovery bin and performs a cooling treatment to avoid crystallization of the polishing liquid. However, when the mold body is placed on the workbench, it is still placed statically, so the polishing effect on the side of the bottom is still limited, and for large molds, it is also easy to bump or squeeze during the process of putting in and taking out, and local damage or deformation occurs. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a surface polishing equipment for automobile parts molds, which does not require direct contact and clamping by clamping claws during the overall polishing assembly line process, so as to avoid clamping and handling damage to the mold. At the same time, it can also avoid contact dead corners when placed in the polishing liquid, so as to achieve the purpose of sufficient contact of the surface with the polishing liquid.

[0005] The present invention provides the following technical solutions: A surface polishing device for automobile parts molds, comprising a polishing box with an opening at the top and a conveying rail group located on one side of the polishing box, a lifting cylinder is installed at the bottom of the polishing box, and a horizontal support plate for positioning and receiving a material holding tooling is installed at the driving end of the lifting cylinder; The conveying rail group includes a linear rail and a transition plate group slidably mounted on the linear rail. The material holding fixture containing the mold to be polished is first sent to the loading lifting platform. The loading lifting platform is provided with a through slot for the transition plate group to pass through. The transition plate group slides to one side of the loading lifting platform to extend under the material holding fixture (5) to receive the material holding fixture, thereby driving the material holding fixture to move to the top of the polishing box. The material holding fixture is held and positioned by the horizontal support plate and driven by the lifting cylinder to descend to the polishing box to stand still, so that the polishing liquid in the polishing box enters the material holding fixture to chemically polish the mold to be polished; After polishing is completed, the lifting cylinder drives the material holding fixture to rise, and the polishing liquid entering the material holding fixture is discharged from the drainage channel. The transition plate group extends to the bottom of the material holding fixture again to receive the material holding fixture, and then moves along the linear track to the material unloading receiving group, which is used to receive the material holding fixture and the polished mold for unloading; The entire process is an integrated assembly line process for mold polishing. During the process, there is no need for direct contact and clamping of the clamping jaws to avoid clamping and handling damage to the mold.

[0006] Preferably, the material holding fixture comprises a material holding box and a bottom plate fixed to the bottom of the material holding box, the material holding box having a double-layer box wall to form a sealed installation cavity between the double-layer side walls and a storage cavity with an open top end located on the inner side of the double-layer side walls, the cavity bottom of the storage cavity is connected to the bottom by a drainage pipe, so that when the material holding fixture enters or leaves the polishing liquid, the polishing liquid can be connected to the inside and outside of the storage cavity from the drainage pipe, at least four groups of side wall rotating motors arranged around the periphery of the mold and four groups of bottom side rotating motors distributed in a rectangular shape and located at the bottom of the cavity are installed in the installation cavity, the driving ends of the side wall rotating motors and the bottom side rotating motors are both extended out of the installation cavity and placed in the storage cavity, and a group of rotating plates are also installed at their ends, and a plurality of groups of balls distributed in an annular shape are rollingly installed on the rotating plates, and the balls are used to roll and press against the peripheral side and bottom side of the mold; At this point, after the mold is placed in the accommodating cavity, the balls on the bottom side can support the bottom of the mold, while the balls on the surrounding side can support the surrounding side of the mold. When the balls rotate, dead angles of contact with the mold can be avoided, thereby achieving the purpose of sufficient surface contact with the polishing liquid.

[0007] Preferably, four groups of positioning grooves in a rectangular distribution are provided on the bottom side of the base plate, and positioning blocks are provided on the horizontal support plate for insertion and positioning in the positioning grooves. Therefore, when the horizontal support plate supports the base plate, the positioning blocks and the positioning grooves can be plugged in to ensure that the position of the material holding tooling in the polishing box is fixed, thereby preventing the tooling from tilting and slipping.

[0008] Preferably, the transition plate group includes a base, a slide plate, a vertical plate, a reciprocating cylinder, and an intermediate plate. The bottom of the base is longitudinally slidably installed on a linear track, and a groove slide is provided on the top. A group of slide plates are slidably installed in the groove slide along the transverse direction. A group of vertical plates are fixed at one end of the slide. The reciprocating cylinder is fixed in the groove slide above the slide, and its driving end is connected to the vertical plate to drive the other end of the slide to horizontally extend into the bottom side of the bottom plate for supporting and positioning the bottom plate, and a group of plug-in grooves are also transversely provided on the upper edge of the horizontal support plate, and the groove depth of the plug-in groove is greater than the thickness of the slide plate, so as to allow the slide plate to pass horizontally.

[0009] Preferably, a plurality of groups of auxiliary steel balls are provided on the top side of the slide plate, and an auxiliary groove for positioning and cooperating with the auxiliary steel balls is provided on the bottom side of the base plate, and the depth of the plug-in groove is greater than the sum of the heights of the slide plate and the auxiliary steel balls. Therefore, when the slide plate drives the material holding tooling to move above the polishing box, the lifting cylinder can continue to move upward after contacting the base plate to lift the material holding tooling and separate it from the auxiliary steel balls, so that the slide plate can be separated from the plug-in groove, so that the lifting cylinder can drive the material holding tooling into the polishing box.

[0010] Preferably, the transition plate group also includes a driving member for driving the base to reciprocate along the linear track, the driving member includes a driving motor installed on the base through a mounting frame, and a rack fixed on the linear track and extending along the linear track. The driving end of the driving motor is connected to a gear that meshes with the rack for transmission, so when the driving motor rotates, it can drive the base to move linearly along the rack, which has better flexibility.

[0011] Preferably, a cleaning chamber and a drying chamber of the same size as the polishing chamber are arranged side by side in the longitudinal direction on one side of the polishing chamber, the cleaning chamber is filled with a cleaning liquid for cleaning the mold, the drying chamber is filled with a hair dryer for blowing air toward the mold, and a jacking cylinder is arranged in the cleaning chamber and the drying chamber, the jacking cylinder has the same structure and installation position as the jacking cylinder in the polishing chamber, and a plate body with the same structure as the horizontal support plate is also installed at its end; Therefore, after polishing is completed, the transition plate group drives the material holding tooling to be located above the cleaning bin and the drying bin respectively, and cooperates with the top cylinder to perform the same operation as the polishing operation. The difference is that when the material holding tooling enters the cleaning bin, it enters the cleaning liquid, and when entering the drying bin, the hair dryer inside it is used to spray hot air on the mold to speed up the drying of the mold surface.

[0012] Preferably, the material unloading receiving group includes a right-angle frame, a side plate mounted on the right-angle frame driven by a material unloading motor, and a reverse drive group mounted on the side plate for driving the holding group to move in reverse; The holding group includes a horizontal base plate connected to one end of the reverse drive group and an auxiliary pressure group connected to the other end of the reverse drive group. A top protrusion is arranged on the horizontal base plate, and a step block is arranged on the bottom plate of the material holding fixture to push and dock with the top protrusion. When one end of the material holding fixture abuts against the side plate, the step block is pressed against the side of the top protrusion. The auxiliary pressure group has the same structure as the material holding fixture and is arranged relative to the opening of the accommodating cavity of the material holding fixture so that the auxiliary pressure group can be held outside the mold under the drive of the reverse drive group and the mold can be smoothly flipped 90 degrees in cooperation with the rotation of the side plate. The horizontal base plate is also provided with a tool for pressing toward the top protrusion. The clamping cylinder of the step block, a material unloading belt conveyor is arranged under the side plate, after the mold is turned over 90 degrees, the reverse drive group drives the auxiliary pressure group and the horizontal base plate to move backwards, and the horizontal base plate also drives the material holding tooling to move backwards to the auxiliary pressure group so that the mold is separated from the auxiliary pressure group and the material holding tooling under the rolling cooperation of the ball and falls onto the flexible belt below, and then the clamping cylinder relaxes and presses the step block, and the material holding tooling also falls onto the flexible belt below closely following the mold, so that the mold and the material holding tooling can be automatically separated from each other during unloading, without manual intervention and clamping of the clamp, which is more time-saving and labor-saving, and will not cause damage to the mold due to the force of the clamp; The top protrusion is also provided with a passage groove for the slide plate and the auxiliary steel ball to pass through. Therefore, after the slide plate drives the material containing tool to be above the top protrusion, the reverse drive group then drives the material containing tool and the auxiliary pressure group to move toward each other by the height of an auxiliary steel ball, so that the auxiliary steel ball is disengaged from the auxiliary groove of the bottom plate, and then the slide plate can be pulled out, and then the material containing tool and the auxiliary pressure group are continued to be driven to move toward each other, until the balls on the bottom sides of the material containing tool and the auxiliary pressure group are pressed against the mold, and then the side plate can be driven to flip 90°.

[0013] Preferably, the reverse drive group includes a bottom connecting block connected to the horizontal base plate, a top connecting block connected to the auxiliary pressure group, and a threaded rod threadedly connected to the bottom connecting rod and the top connecting block, and the bottom connecting block and the top connecting block are slidably mounted on the side plate.

[0014] The beneficial effects of the present invention are as follows: the surface polishing equipment for automobile parts molds provided by the present invention does not need direct contact and clamping by the clamping claws in the overall polishing assembly line process, thereby avoiding clamping and handling damage to the mold, and at the same time, it can also avoid contact dead angles when placed in the polishing liquid, thereby achieving the purpose of sufficient contact of the surface with the polishing liquid. The specific operation is: first, a material holding fixture for accommodating the mold to be polished is placed on a feeding lifting platform, and a through groove for a transition plate group to pass through is provided on the feeding lifting platform, and the transition plate group slides to one side of the feeding lifting platform , so as to extend to the bottom of the material holding tooling to receive the material holding tooling, and then drive the material holding tooling to move to the top of the polishing box, the material holding tooling is held and positioned by the horizontal support plate and driven by the lifting cylinder to descend to the polishing box to stand still, waiting for the polishing liquid in the polishing box to enter the material holding tooling to perform chemical polishing on the mold to be polished; and after the polishing is completed, the lifting cylinder drives the material holding tooling to rise, and the polishing liquid entered into the material holding tooling is discharged from the drainage channel, and the transition plate group extends to the bottom of the material holding tooling again to receive the material holding tooling, and then moves along the linear track to the material unloading bearing wherein, after the mold is placed in the accommodating cavity, the ball bearings on the bottom side can support the bottom of the mold, while the ball bearings on the peripheral side can support the peripheral side of the mold, and when the ball bearings rotate, they can also avoid the appearance of a dead angle of contact with the mold, so as to achieve the purpose of sufficient contact of the surface with the polishing liquid, and when the horizontal support plate supports the bottom plate, the positioning block and the positioning groove can be plugged in to ensure that the position of the material holding fixture in the polishing box is fixed to avoid the tilting and slipping of the two fixtures, and when the slide plate drives the material holding fixture to move to the top of the polishing box, the lifting cylinder can After contacting the bottom plate, it can continue to move upward to lift the material holding tooling and separate it from the auxiliary steel balls, so that the slide plate can be disengaged from the plug-in slot, so that the lifting cylinder can drive the material holding tooling into the polishing box. After polishing is completed, the transition plate group drives the material holding tooling to be located above the cleaning bin and the drying bin respectively, and cooperates with the lifting cylinder to perform the same operation as the polishing operation. The difference is that when the material holding tooling enters the cleaning bin, it enters the cleaning liquid, and when entering the drying bin, the hair dryer inside it is used to spray hot air on the mold to speed up the drying of the mold surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front cross-sectional view of the coordination of the polishing box and the conveying rail assembly in the present invention; Figure 2 This is a structural cross-sectional view of the material container entering the polishing box; Figure 3 is a side view of the transition plate assembly; Figure 4 It is a side view of the structure of the skateboard; Figure 5 is a top view of the rotating plate; Figure 6 is a side view of the horizontal brace; Figure 7 It is a schematic diagram of the structure of the distribution of the conveyor rail group, polishing box, cleaning chamber and drying chamber; Figure 8 It is the main cross-sectional view of the blanking receiving group; Markings in the figure: 1. Polishing box; 2. Conveyor rail group; 3. Lifting cylinder; 4. Horizontal support plate; 5. Material holding tooling; 6. Loading lifting platform; 7. Through slot; 8. Unloading receiving group; 9. Cleaning bin; 10. Drying bin; 21. Linear track; 22. Base; 23. Slide plate; 24. Vertical plate; 25. Reciprocating cylinder; 26. Middle plate; 27. Auxiliary steel ball; 29. ​​Driving motor; 210. Rack; 41. Plug slot; 51. Material holding box; 52. Bottom Plate; 53, installation cavity; 54, accommodating cavity; 55, drainage pipe; 56, side wall rotating motor; 57, bottom side rotating motor; 58, rotating plate; 59, ball bearing; 521, positioning groove; 522, positioning block; 81, right-angle frame; 82, side plate; 83, back drive group; 84, auxiliary pressure group; 85, top protrusion; 86, step block; 87, unloading belt conveyor; 88, bottom connecting block; 89, top connecting block; 810, threaded rod. DETAILED DESCRIPTION

[0016] Example 1 like Figure 1-7 As shown, a surface polishing device for automobile parts molds, in this embodiment, includes a polishing box 1 with an open top and a conveying rail group 2 located on one side of the polishing box 1, a lifting cylinder 3 is installed at the bottom of the polishing box 1, and a horizontal support plate 4 for positioning and receiving a material container 5 is installed at the driving end of the lifting cylinder 3; The conveying rail group 2 includes a linear rail 21 and a transition plate group slidably mounted on the linear rail 21. The material holding fixture 5 containing the mold to be polished is first sent to the loading lifting platform 6. The loading lifting platform 6 is provided with a through groove 7 for the transition plate group to pass through. The transition plate group slides to one side of the loading lifting platform 6 to extend under the material holding fixture 5 to receive the material holding fixture 5, and then drives the material holding fixture 5 to move to the top of the polishing box 1. The material holding fixture 5 is held and positioned by the horizontal support plate 4 and driven by the lifting cylinder 3 to descend to the polishing box 1 and stand still, so that the polishing liquid in the polishing box 1 enters the material holding fixture 5 to chemically polish the mold to be polished. After polishing is completed, the lifting cylinder 3 drives the material holding fixture 5 to rise, and the polishing liquid entering the material holding fixture 5 is discharged from the drainage channel. The transition plate group extends to the bottom of the material holding fixture 5 again to receive the material holding fixture 5, and then moves along the linear track 21 to the material unloading receiving group 8. The material unloading receiving group 8 is used to receive the material holding fixture 5 and the polished mold for unloading; The entire process is an integrated assembly line process for mold polishing. During the process, there is no need for direct contact and clamping of the clamping jaws to avoid clamping and handling damage to the mold.

[0017] The material holding fixture 5 comprises a material holding box 51 and a bottom plate 52 fixed to the bottom of the material holding box 51. The material holding box 51 has a double-layer box wall to form a sealed installation cavity 53 between the double-layer side walls and a receiving cavity 54 with an open top located on the inner side of the double-layer side walls. The bottom of the receiving cavity 54 is connected to the bottom through a drainage pipe 55. Therefore, when the material holding fixture 5 enters or leaves the polishing liquid, the polishing liquid can be connected to the inside and outside of the receiving cavity 54 from the drainage pipe 55. At least four groups of side wall rotating motors 56 arranged around the periphery of the mold and four groups of bottom side rotating motors 57 distributed in a rectangular shape at the bottom of the cavity are installed in the installation cavity 53. The driving ends of the side wall rotating motors 56 and the bottom side rotating motors 57 are both extended out of the installation cavity 53 and placed in the receiving cavity 54. A group of rotating plates 58 are also installed at their ends. A plurality of groups of balls 59 distributed in an annular shape are rollingly installed on the rotating plates 58. The balls 59 are used to roll and press against the peripheral side and bottom side of the mold. At this point, after the mold is placed in the accommodating cavity 54, the balls 59 on the bottom side can support the bottom of the mold, while the balls 59 on the peripheral side can support the peripheral side of the mold. When the balls 59 rotate, dead angles of contact with the mold can be avoided, thereby achieving the purpose of sufficient surface contact with the polishing liquid.

[0018] Four groups of positioning grooves 521 distributed in a rectangular shape are also provided on the bottom side of the bottom plate 52, and positioning blocks 522 inserted in the positioning grooves 521 for insertion and positioning are provided on the horizontal support plate 4. Therefore, when the horizontal support plate 4 supports the bottom plate 52, the positioning blocks 522 and the positioning grooves 521 can be plugged in and matched to ensure that the position of the material holding tooling 5 in the polishing box 1 is fixed to prevent the tooling from tilting and slipping.

[0019] The transition plate group includes a base 22, a slide plate 23, a vertical plate 24, a reciprocating cylinder 25, and an intermediate plate 26. The bottom of the base 22 is slidably installed on the linear rail 21 along the longitudinal direction, and a groove slide is opened on the top thereof. A group of slide plates 23 are slidably installed in the groove slide along the transverse direction. A group of vertical plates 24 are fixed at one end of the slide plate 23. The reciprocating cylinder 25 is fixed in the groove slide above the slide plate 23, and its driving end is connected to the vertical plate 24 to drive the other end of the slide plate 23 to extend horizontally into the bottom side of the bottom plate 52, which is used to support and position the bottom plate 52, and a group of plug-in grooves 41 are also opened in the transverse direction on the upper side of the horizontal support plate 4. The groove depth of the plug-in groove 41 is greater than the thickness of the slide plate 23, so as to allow the slide plate 23 to pass horizontally.

[0020] A plurality of auxiliary steel balls 27 are also provided on the top side of the slide plate 23, and an auxiliary groove for positioning and cooperating with the auxiliary steel balls 27 is also provided on the bottom side of the bottom plate 52, and the groove depth of the plug-in groove 41 is also greater than the sum of the heights of the slide plate 23 and the auxiliary steel balls 27. Therefore, when the slide plate 23 drives the material holding fixture 5 to move to the top of the polishing box 1, the lifting cylinder 3 can continue to move upward after contacting the bottom plate 52 to lift the material holding fixture 5 and separate it from the auxiliary steel balls 27, so that the slide plate 23 can be separated from the plug-in groove 41, so that the lifting cylinder 3 can drive the material holding fixture 5 to enter the polishing box 1.

[0021] The transition plate group also includes a driving member for driving the base 22 to reciprocate along the linear track 21. The driving member includes a driving motor 29 installed on the base 22 through a mounting frame, and a rack 210 fixed on the linear track 21 and extending along the linear track 21. The driving end of the driving motor 29 is connected to a gear that meshes with the rack 210 for transmission. Therefore, when the driving motor 29 rotates, it can drive the base to move linearly along the rack 210, which has better flexibility.

[0022] A cleaning chamber 9 and a drying chamber 10 of the same size as the polishing chamber 1 are arranged side by side in the longitudinal direction on one side of the polishing chamber 1. The cleaning chamber 9 is equipped with a cleaning liquid for cleaning the mold, and the drying chamber 10 is equipped with a hair dryer for blowing air toward the mold. A top cylinder is also arranged in the cleaning chamber 9 and the drying chamber 10. The top cylinder has the same structure and installation position as the top cylinder 3 in the polishing chamber 1, and a plate body with the same structure as the horizontal support plate 4 is also installed at its end; Therefore, after polishing is completed, the transition plate group drives the material holding fixture 5 to be located above the cleaning bin 9 and the drying bin 10 respectively, and cooperates with the top cylinder to perform the same operation as the polishing operation. The difference is that when the material holding fixture 5 enters the cleaning bin 9, it enters the cleaning liquid, and when entering the drying bin 10, the hair dryer therein is used to spray hot air on the mold to speed up the drying of the mold surface.

[0023] Example 2 like Figure 8 As shown, a surface polishing device for automobile part molds, in this embodiment, is further limited based on Example 1, wherein the unloading receiving group 8 includes a right-angle frame 81, a side plate 82 installed on the right-angle frame 81 driven by a unloading motor, and a back-drive group 83 installed on the side plate 82 for driving the holding group to move in the reverse direction; the back-drive group 83 includes a bottom connecting block 88 connected to a horizontal base plate, a top connecting block 89 connected to an auxiliary pressure group 84, and a threaded rod 810 threadedly connected to the bottom connecting rod and the top connecting block 89, and the bottom connecting block 88 and the top connecting block 89 are slidably installed on the side plate 82.

[0024] The holding group includes a horizontal substrate connected to one end of the reverse drive group 83, and an auxiliary pressure group 84 connected to the other end of the reverse drive group 83. A top protrusion 85 is arranged on the horizontal substrate, and a step block 86 that pushes and docks with the top protrusion 85 is arranged on the bottom plate 52 of the material holding fixture 5. When one end of the material holding fixture 5 abuts against the side plate 82, the step block 86 presses against the side of the top protrusion 85. The auxiliary pressure group 84 has the same structure as the material holding fixture 5, and is arranged relative to the opening of the accommodating cavity 54 of the material holding fixture 5, so that it is held outside the mold under the drive of the reverse drive group 83, and the mold is smoothly turned 90 degrees in cooperation with the rotation of the side plate 82. The horizontal substrate is also provided with a pressure plate for pressing toward the top protrusion 85. The clamping cylinder of the step block 86 is tightened, and a material unloading belt conveyor 87 is arranged below the side plate 82. After the mold is turned over 90 degrees, the reverse drive group 83 drives the auxiliary pressure group 84 and the horizontal base plate to move backwards, and the horizontal base plate also drives the material holding fixture 5 to move backwards to the auxiliary pressure group 84 so that the mold is separated from the auxiliary pressure group 84 and the material holding fixture 5 under the rolling cooperation of the ball 59 and falls onto the flexible belt below, and then the clamping cylinder relaxes the top pressure step block 86, and the material holding fixture 5 also falls onto the flexible belt below with the mold, so that the mold and the material holding fixture can be automatically separated during unloading without manual intervention and clamping, which is more time-saving and labor-saving, and will not cause damage to the mold due to the force of the clamp; A passage groove for the slide plate 23 and the auxiliary steel ball 27 to pass through is also provided on the top protrusion 85. Therefore, after the slide plate 23 drives the material containing tool 5 to be placed above the top protrusion 85, the reverse drive group 83 then drives the material containing tool 5 and the auxiliary pressure group 84 to move toward each other by the height of the auxiliary steel ball 27, so that the auxiliary steel ball 27 is disengaged from the auxiliary groove of the bottom plate 52, and then the slide plate 23 can be pulled out, and then the material containing tool 5 and the auxiliary pressure group 84 are continued to be driven to move toward each other, until the balls 59 on the bottom sides of the material containing tool 5 and the auxiliary pressure group 84 are pressed against the mold, and then the side plate 82 can be driven to flip 90°.

[0025] The working principle of the present invention is as follows: the surface polishing equipment for automobile parts molds provided by the present invention does not need direct contact and clamping by the clamping claws in the overall assembly line process of polishing, so as to avoid clamping and handling damage to the mold, and at the same time, it can also avoid contact dead angles when placed in the polishing liquid, so as to achieve the purpose of sufficient contact of the surface with the polishing liquid. The specific operation is as follows: first, the material holding fixture 5 for holding the mold to be polished is first sent to the loading lifting platform 6, and the loading lifting platform 6 is provided with a through groove 7 for the transition plate group to pass through. The transition plate group slides to one side of the loading lifting platform 6 to extend under the material holding fixture 5. The material holding fixture 5 is received by the horizontal support plate 4, and then the material holding fixture 5 is driven to move to the top of the polishing box 1. The material holding fixture 5 is received and positioned by the horizontal support plate 4 and driven by the lifting cylinder 3 to descend to the polishing box 1 to stand still, so that the polishing liquid in the polishing box 1 enters the material holding fixture 5 to perform chemical polishing on the mold to be polished; and after the polishing is completed, the lifting cylinder 3 drives the material holding fixture 5 to rise, and the polishing liquid entered into the material holding fixture 5 is discharged from the drainage channel, and the transition plate group is extended to the bottom of the material holding fixture 5 again to receive the material holding fixture 5, and then moves along the linear track 21 to the material receiving group 8; wherein, after the mold is placed in the receiving cavity, After the mold is in the polishing box 1, the ball bearings 59 on the bottom side can support the bottom of the mold, while the ball bearings 59 on the circumferential side can support the circumferential side of the mold. When the ball bearings 59 rotate, the contact dead angle with the mold can be avoided, so as to achieve the purpose of fully contacting the surface with the polishing liquid. When the horizontal support plate 4 supports the bottom plate 52, the positioning block 522 and the positioning groove 521 can be plugged in and matched to ensure that the position of the material holding fixture 5 in the polishing box 1 is fixed to avoid the tilting and slipping of the two fixtures. When the slide plate 23 drives the material holding fixture 5 to move above the polishing box 1, the lifting cylinder 3 can contact the bottom plate 5 2, it can continue to move upward to lift the material container 5 and separate it from the auxiliary steel ball 27, so that the slide plate 23 is separated from the plug-in groove (41), so that the lifting cylinder 3 drives the material container 5 to enter the polishing box 1, and after the polishing is completed, the transition plate group drives the material container 5 to be located above the cleaning chamber 9 and the drying chamber 10 respectively, and cooperates with the lifting cylinder to perform the same operation as the polishing operation, the difference is that when the material container 5 enters the cleaning chamber 9, it enters the cleaning liquid, and when it enters the drying chamber 10, the blower therein is used to spray hot air on the mold to accelerate the drying of the mold surface.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A surface polishing device for automobile parts molds, characterized in that: It includes a polishing box with an opening at the top and a conveying rail group located on one side of the polishing box, a lifting cylinder is installed at the bottom of the polishing box, and a horizontal support plate for positioning and receiving a material holding tooling is installed at the driving end of the lifting cylinder; The conveying rail group includes a linear rail and a transition plate group slidably mounted on the linear rail. The material holding fixture containing the mold to be polished is first sent to the loading lifting platform. The loading lifting platform is provided with a through groove for the transition plate group to pass through. The transition plate group slides to one side of the loading lifting platform to extend under the material holding fixture to receive the material holding fixture, and then drives the material holding fixture to move to the top of the polishing box. The material holding fixture is held and positioned by the horizontal support plate and driven by the lifting cylinder to descend to the polishing box and stand still, so that the polishing liquid in the polishing box enters the material holding fixture to perform chemical polishing on the mold to be polished. After polishing is completed, the lifting cylinder drives the material holding fixture to rise, and the polishing liquid entering the material holding fixture is discharged from the drainage channel. The transition plate group extends to the bottom of the material holding fixture again to receive the material holding fixture, and then moves along the linear track to the material unloading receiving group, which is used to receive the material holding fixture and the polished mold for unloading.

2. The surface polishing equipment for automobile parts mold according to claim 1, characterized in that: The material holding tooling includes a material holding box and a bottom plate fixed to the bottom of the material holding box, the material holding box having a double-layer box wall to form a sealed installation cavity between the double-layer side walls and a receiving cavity with an open top end located on the inner side of the double-layer side wall, the bottom of the receiving cavity is connected to the bottom by a drainage pipe, at least four groups of side wall rotating motors arranged around the periphery of the mold and four groups of bottom side rotating motors distributed in a rectangular shape at the bottom of the cavity are installed in the installation cavity, the driving ends of the side wall rotating motors and the bottom side rotating motors both extend out of the installation cavity and are placed in the receiving cavity, and a group of rotating plates are also installed at their ends, and a plurality of groups of balls distributed in a ring shape are rollingly installed on the rotating plates, and the balls are used to roll and press against the peripheral side and bottom side of the mold.

3. The surface polishing equipment for automobile parts mold according to claim 2, characterized in that: The bottom side of the bottom plate is also provided with four groups of positioning grooves distributed in a rectangular shape, and the horizontal support plate is provided with positioning blocks inserted in the positioning grooves for plugging and positioning.

4. The surface polishing equipment for automobile parts mold according to claim 3 is characterized in that: The transition plate group includes a base, a slide plate, a vertical plate, a reciprocating cylinder, and an intermediate plate. The bottom of the base is longitudinally slidably installed on a linear track, and a groove slide is provided on the top. A group of slide plates are slidably installed in the groove slide along the transverse direction. A group of vertical plates are fixed at one end of the slide plate. The reciprocating cylinder is fixed in the groove slide above the slide plate, and its driving end is connected to the vertical plate to drive the other end of the slide plate to horizontally extend into the bottom side of the bottom plate for supporting and positioning the bottom plate. A group of plug-in grooves are also transversely provided on the upper edge of the horizontal support plate, and the groove depth of the plug-in groove is greater than the thickness of the slide plate so as to allow the slide plate to pass horizontally.

5. The surface polishing equipment for automobile parts mold according to claim 4, characterized in that: The top side of the slide plate is also provided with a plurality of groups of auxiliary steel balls, the bottom side of the base plate is also provided with auxiliary grooves for positioning and matching with the auxiliary steel balls, and the depth of the insertion groove is also greater than the sum of the heights of the slide plate and the auxiliary steel balls.

6. The surface polishing equipment for automobile parts mold according to claim 4, characterized in that: The transition plate group also includes a driving member for driving the base to reciprocate along the linear track. The driving member includes a driving motor installed on the base through a mounting frame, a rack fixed on the linear track and extending along the linear track, and a driving end of the driving motor is connected to a gear that meshes with the rack for transmission.

7. The surface polishing equipment for automobile parts mold according to claim 4, characterized in that: A cleaning chamber and a drying chamber of the same size as the polishing box are arranged side by side in the longitudinal direction on one side of the polishing box. The cleaning chamber contains a cleaning liquid for cleaning the mold, and the drying chamber contains a hair dryer for blowing air toward the mold to dry it. A jacking cylinder is also arranged in the cleaning chamber and the drying chamber. The jacking cylinder has the same structure and installation position as the jacking cylinder in the polishing box, and a plate body with the same structure as the horizontal support plate is also installed at its end.

8. The surface polishing equipment for automobile parts mold according to claim 4, characterized in that: The material unloading receiving group includes a right-angle frame, a side plate installed on the right-angle frame driven by a material unloading motor, and a reverse drive group installed on the side plate for driving the holding group to move in reverse; The holding group includes a horizontal base plate connected to one end of the reverse driving group and an auxiliary pressure group connected to the other end of the reverse driving group. A top protrusion is arranged on the horizontal base plate, and a step block is arranged on the bottom plate of the material holding fixture to push and dock with the top protrusion. When one end of the material holding fixture abuts against the side plate, the step block presses against the side of the top protrusion. The auxiliary pressure group has the same structure as the material holding fixture and is arranged relative to the opening of the accommodating cavity of the material holding fixture so that the auxiliary pressure group can be held outside the mold under the drive of the reverse driving group and the mold can be smoothly flipped at ° in cooperation with the rotation of the side plate. The horizontal base plate is also provided with a clamping cylinder for pressing the step block toward the top protrusion block, and a material unloading belt conveyor is provided under the side plate. After the mold is flipped over, the reverse drive group drives the auxiliary pressure group and the horizontal base plate to move backwards, and the horizontal base plate also drives the material holding tooling to move backwards toward the auxiliary pressure group so that the mold can be separated from the auxiliary pressure group and the material holding tooling under the rolling cooperation of the ball and fall onto the flexible belt below, and then the clamping cylinder releases the top pressure step block, and the material holding tooling also follows the mold and falls onto the flexible belt below; the top protrusion is also provided with a passing groove for the slide plate and the auxiliary steel ball to pass through.

9. The surface polishing equipment for automobile parts mold according to claim 8, characterized in that: The reverse drive group includes a bottom connecting block connected to the horizontal base plate, a top connecting block connected to the auxiliary pressure group, and a threaded rod threadedly connected to the bottom connecting rod and the top connecting block. The bottom connecting block and the top connecting block are slidably mounted on the side plate.

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