Surface grinding device for automobile die-casting grinding tool

Abstract

The invention relates to the field of die machining, and discloses a surface grinding device for an automobile die-casting grinding tool, the surface grinding device comprises an outer shell and a main body frame in the outer shell, the main body frame comprises two side frames, a bending frame, an inner layer frame, a compensation notch and a limiting roller, the two side frames are symmetrically mounted in the outer shell, and the bending frame and the inner layer frame are symmetrically mounted in the outer shell. The side frames are rotationally connected with the outer shell, one end of each side frame is fixedly provided with a bent frame, and an inner layer frame is fixedly installed between the two bent frames. Through sliding of the connecting upper frame, the shape of the inner-layer frame can be changed, the inner-layer frame can achieve acute-angle and obtuse-angle working states according to the use condition, adjustment can be conducted according to the shape of a mold, attached grinding operation and acute-angle state with burrs can be achieved, the inner-layer frame can enter some narrow-angle and narrow-space environments, and the grinding efficiency is improved. And by means of the function of the collecting bottom frame and the suction acting force of the suction shell, the chipping collecting function is achieved.

Description

Technical Field

[0001] The invention relates to the field of mold processing, in particular to a surface grinding device for automobile die-casting molds. Background Art

[0002] Molds are the mother of manufacturing. Molds are needed in many industries. In industrial production, various molds and tools are used to obtain the required products through injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In short, molds are tools used to make molded objects. The production and manufacturing of molds also requires many steps, among which polishing is an important step.

[0003] Mould grinding usually involves grinding the burrs on the mould surface. Currently, an electric drill is used to control the grinding head for rotary grinding. However, this grinding method is relatively limited. For irregularly shaped moulds, the existing electric drill controlled grinding head method is difficult to handle some narrow inner angles, and the burrs generated by grinding are difficult to collect, which affects the use. Summary of the invention

[0004] The present invention provides a surface grinding device for automotive die-casting molds, which has the beneficial effect of facilitating grinding and solves the problem of conventional burr grinding mentioned in the above background technology. An electric drill is used to control a grinding head for rotational grinding. However, this grinding method is relatively limited and difficult to handle some narrow internal angles. In addition, the burr debris produced by grinding is difficult to collect, which affects the use.

[0005] The present invention provides the following technical solution: a surface grinding device for automotive die-casting molds, comprising an outer shell and a main frame inside the outer shell, the main frame comprising a side frame, a bending frame, an inner frame, a compensation notch and a limiting roller, two side frames are symmetrically installed inside the outer shell, the side frames are rotatably connected to the outer shell, a bending frame is fixedly installed at one end of the side frame, and an inner frame is fixedly installed between the two bending frames;

[0006] The side frame is made of hard material, and the inner frame and the bending frame are made of flexible material;

[0007] The main frames are symmetrically arranged, and a grinding belt is slidably installed between the two main frames;

[0008] The grinding belt includes a support belt, a cutting blade, a support horizontal bar and a limit horizontal bar. The support belt is made of rubber. The upper end of the support belt is arranged with a cutting blade. Support horizontal bars are fixedly installed on both sides of the support belt.

[0009] The inner walls of the side frame, the bending frame and the inner frame are symmetrically arranged with limiting rollers, and the limiting rollers are used to support the supporting belt to slide inside the side frame, the bending frame and the inner frame;

[0010] The limiting roller is divided into a front half and a rear half, and the limiting horizontal bar is used to be clamped between the front half and the rear half.

[0011] As an optional solution of the surface grinding device for automobile die-casting molds described in the present invention, wherein: a grinding strip is also installed on the upper surface of the support belt, and the grinding strip includes a strip placement box, a support base and a grinding brush;

[0012] The upper surface of the support belt is arranged with strip-shaped placement boxes, the interior of the strip-shaped placement boxes is rotatably mounted with a support base, and the top of the support base is densely arranged with grinding brushes.

[0013] As an optional solution of the surface grinding device for automobile die-casting molds of the present invention, wherein: the grinding belt further includes a guide groove, an inner groove and a gap groove;

[0014] A guide groove located in the support belt is provided between each of the strip-shaped placement boxes and the cutting blade;

[0015] The lower end of the cutting blade is provided with an inner groove located in the support belt, and a gap groove is provided between each of the cutting blades.

[0016] As an optional solution of the surface grinding device for automotive die-casting molds described in the present invention, a limiting push rod is installed on one side of the outer shell, and the limiting push rod includes a connecting frame, a limiting slide groove, a touch block and a push rod, the connecting frame is rotatably installed on both sides of the inner frame, and a push rod is fixedly installed on one side of the connecting frame, a limiting slide groove is provided on one side of the outer shell, and a touch block is slidably installed inside the limiting slide groove, and the push rod is used to connect the connecting frame and the touch block.

[0017] As an optional solution of the surface grinding device for automobile die-casting molds described in the present invention, wherein: the grinding strip also includes an outer gear ring, a driving spindle, a driving rack and a transmission wheel;

[0018] The strip-shaped placement box has support bases arranged transversely inside, and the bottom end of the support base is provided with an external gear ring. The bottom surface of the strip-shaped placement box is also rotatably mounted with a driving spindle, and one side of the support base is toothed and meshed with a transmission wheel located on the inner wall of the strip-shaped placement box;

[0019] The transmission wheel comprises an upper gear, a fixed shaft and a second bevel gear, the fixed shaft is used to provide fixing conditions for the upper gear and the second bevel gear, the second bevel gear is used to mesh with the first bevel gear through the tooth groove, and the upper gear is used to mesh with the tooth groove of the outer gear ring;

[0020] A first bevel gear is arranged outside the driving main shaft, and the first bevel gear is used to transmit the power of the driving main shaft to the supporting base through the transmission wheel;

[0021] The bottom surface of the inner wall of the body frame is densely arranged with driving racks, and both ends of the driving main shaft are provided with driving wheels, and the driving wheels are used for meshing connection with the tooth grooves of the driving racks.

[0022] As an optional solution of the surface grinding device for automobile die-casting molds of the present invention, wherein: a limiting frame is arranged inside the strip placement box, and the limiting frame is used to rotatably install the support base in the strip placement box, and spiral cone blocks are arranged inside the limiting frame, and support rollers are arranged outside the support base;

[0023] The support roller is used to support the support base and is rotatably installed in the limiting frame.

[0024] As an optional solution of the surface grinding device for automobile die-casting molds of the present invention, wherein: a collecting chassis is provided at the lower end of the inner frame, the collecting chassis comprises a flexible shell, a collecting shell, a closed paddle and a first suction pipe, a flexible shell is provided on the lower surface of the inner frame, and closed paddles are provided at both ends of the flexible shell on the lower surface of the supporting belt;

[0025] The closing paddle is used to achieve a closing effect inside the flexible shell, a collecting shell is provided on the bottom surface of the flexible shell, and a first suction pipe is provided at the bottom end of the collecting shell;

[0026] A second suction pipe is disposed at the bottom end of the first suction pipe, a third suction pipe is disposed at the bottom end of the second suction pipe, the diameter of the second suction pipe is larger than that of the first suction pipe, and the diameter of the third suction pipe is larger than that of the second suction pipe.

[0027] As an optional solution of the surface grinding device for automobile die-casting molds of the present invention, wherein: a collecting box located in the outer shell is installed on one side of the lower end of the side frame, a collecting cavity is provided inside the collecting box, and an insertion rod is provided at the top of the collecting box, and each of the insertion rods is inserted between two grinding brushes;

[0028] A flow guide tube is provided at the lower end of the collecting box.

[0029] As an optional solution of the surface grinding device for automotive die-casting molds described in the present invention, an elastic column is also fixedly installed inside the outer shell, a fixing frame is fixedly installed on the bottom end of the elastic column, a contact roller is rotatably installed on the bottom end of the fixing frame, a first motor is fixedly installed on one side of the fixing frame, and a driving gear is installed on one end of the contact roller and the first motor, the first motor is used to provide rotational power for the contact roller, and the contact roller is used to provide rotational power for the support belt.

[0030] As an optional solution of the surface grinding device for automotive die-casting molds described in the present invention, a suction shell is provided at the bottom end of the outer shell, a fan blade is rotatably installed inside the suction shell, a second motor is fixedly installed at the bottom end of the fan blade, a discharge pipe is provided on one side of the suction shell, and the third suction pipe and the guide pipe are both connected to the suction shell.

[0031] The present invention has the following beneficial effects:

[0032] 1. This surface grinding device for automobile die-casting molds can change the shape of the inner frame by sliding the connecting upper frame, so that it can achieve acute angle and obtuse angle working states according to the usage conditions, and can be adjusted according to the shape of the mold. It can also achieve a close grinding operation with the burrs. In the acute angle state, it can enter some environments with narrow angles and narrow spaces, and utilize the function of the collecting chassis and the suction force of the suction shell to achieve the debris collection function.

[0033] 2. This surface grinding device for automobile die-casting molds utilizes the rotation function of the support base so that the grinding brush has a rotating effect when grinding as the support belt moves, thereby improving the grinding efficiency and surface roughness. When the support base rotates, it moves along the trajectory of the spiral cone block, and the spiral cone block is a conical structure. When it moves, it will form a drop, and after falling, it will cause a vibration effect. By utilizing this vibration effect, the debris gathered inside the grinding brush after grinding can be shaken out, and the grinding brush itself can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 It is a schematic diagram of the overall side structure of the present invention.

[0036] Figure 3 It is a schematic diagram of the internal structure of the suction shell of the present invention.

[0037] Figure 4 It is a schematic diagram of the internal structure of the strip placement box of the present invention.

[0038] Figure 5 It is a schematic diagram of the cross-sectional structure of the support belt of the present invention.

[0039] Figure 6 For the present invention Figure 5 A is a schematic diagram of the local structure.

[0040] Figure 7 For the present invention Figure 5 The B area is a schematic diagram of the local structure.

[0041] Figure 8 It is a schematic diagram of the internal structure of the collecting box of the present invention.

[0042] Fig. 9 It is a schematic diagram of the supporting base structure of the present invention.

[0043] Fig.10 It is a schematic diagram of the acute angle working state of the inner frame of the present invention.

[0044] Fig.11 It is a schematic diagram of the structure of the inner frame of the present invention in the obtuse-angle working state.

[0045] In the figure: 1. outer shell; 2. main frame; 21. side frame; 22. bending frame; 23. inner frame; 24. compensation notch; 25. limit roller; 3. grinding belt; 31. support belt; 32. guide groove; 33. inner groove; 34. cutting blade; 35. gap groove; 36. support bar; 37. limit bar; 4. grinding bar; 40. support roller; 41. bar storage box; 42. support base; 43. outer gear ring; 44. drive spindle; 45. drive rack; 46. transmission wheel; 47. grinding brush; 48. limit frame ; 49. Spiral cone block; 5. Collecting base frame; 51. Flexible shell; 52. Collecting shell; 53. Closing pick; 54. First suction tube; 55. Second suction tube; 56. Third suction tube; 61. Collecting box; 62. Collecting chamber; 63. Insert rod; 64. Guide tube; 7. Limit push rod; 71. Connecting upper frame; 72. Limit slide groove; 73. Touch block; 74. Push rod; 81. Fixed frame; 82. Elastic column; 83. Contact roller; 84. First motor; 91. Suction shell; 92. Fan blade; 93. Second motor; 94. Discharge pipe. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0047] Example 1, please refer to Figure 1-Figure 11 , one of which is a surface grinding device for automotive die-casting molds, comprising an outer shell 1 and a main frame 2 inside the outer shell 1, the main frame 2 comprising a side frame 21, a bending frame 22, an inner frame 23, a compensation notch 24 and a limiting roller 25, two side frames 21 are symmetrically installed inside the outer shell 1, the side frames 21 are rotatably connected to the outer shell 1, one end of the side frame 21 is fixedly installed with a bending frame 22, and an inner frame 23 is fixedly installed between the two bending frames 22;

[0048] The side frame 21 is made of hard material, while the inner frame 23 and the bending frame 22 are made of flexible material;

[0049] The main frames 2 are symmetrically arranged, and a grinding belt 3 is slidably installed between the two main frames 2;

[0050] The grinding belt 3 includes a support belt 31, a cutting blade 34, a support bar 36 and a limit bar 37. The support belt 31 is made of rubber. The cutting blade 34 is arranged on the upper end of the support belt 31. The support bars 36 are fixedly installed on both sides of the support belt 31.

[0051] The inner walls of the side frame 21, the bending frame 22 and the inner frame 23 are symmetrically arranged with limiting rollers 25, and the limiting rollers 25 are used to support the support belt 31 to slide inside the side frame 21, the bending frame 22 and the inner frame 23;

[0052] The limiting roller 25 is divided into a front half and a rear half, and the limiting horizontal bar 37 is used to be clamped between the front half and the rear half.

[0053] A grinding strip 4 is also installed on the upper surface of the support belt 31, and the grinding strip 4 includes a strip-shaped placement box 41, a support base 42 and a grinding brush 47;

[0054] The upper surface of the support belt 31 is provided with a strip-shaped placement box 41, and a support base 42 is rotatably installed inside the strip-shaped placement box 41, and a grinding brush 47 is densely arranged on the top of the support base 42;

[0055] The grinding belt 3 also includes a guide groove 32, an inner groove 33 and a gap groove 35;

[0056] A guide groove 32 is provided in the support belt 31 between each strip-shaped placement box 41 and the cutting blade 34;

[0057] The lower end of the cutting blade 34 is provided with an inner groove 33 located in the support belt 31, and a gap groove 35 is provided between each cutting blade 34;

[0058] A limiting push rod 7 is installed on one side of the outer shell 1, and the limiting push rod 7 includes a connecting frame 71, a limiting slide groove 72, a touch block 73 and a push rod 74. The connecting frames 71 are rotatably installed on both sides of the inner frame 23, and a push rod 74 is fixedly installed on one side of the connecting frame 71. A limiting slide groove 72 is provided on one side of the outer shell 1, and a touch block 73 is slidably installed inside the limiting slide groove 72. The push rod 74 is used to connect the connecting frame 71 and the touch block 73.

[0059] The operator holds the outer side of the outer shell 1 and moves it to the grinding position, and the grinding operation is performed by moving the support belt 31 inside the main frame 2;

[0060] according to Fig.10 and Fig.11 As shown, during grinding, the inner frame 23 is made of a flexible material and has a high deformation capacity. At this time, when the operator presses the touch block 73 with his finger and slides upward, and drives the connecting frame 71 to move accordingly, the center of the inner frame 23 will be driven to push upward. When the connecting frame 71 and the limiting slide groove 72 are raised to the maximum distance, the inner frame 23 reaches the maximum limit at the same time and presents an acute cone angle, otherwise it is in an obtuse state. The cone angle state achieved by the support belt 31 can grind the burrs of some workpieces with smaller angles, and according to the flexible characteristics of the inner frame 23 and the support belt 31, compared with the conventional drill grinding method, the device can be adjusted according to the shape of the mold, so as to have a flexible operation function, and can grind the surroundings of the grinding part at the same time, so that the grinding area and the area without burrs are more smoothly connected, further reducing the difference in surface roughness between the two.

[0061] During grinding, the cutting blade 34 is driven to move by the support belt 31. While the cutting blade 34 moves, it contacts the burr. The end of the cutting blade 34 is a cutout, which can directly cut the port, and the cut debris will fall into the inside of the flexible shell 51 along the slit groove 35. The height of the cutting blade 34 is lower than the grinding height of the grinding brush 47. The purpose of installing the cutting blade 34 is to avoid the appearance of some special harder burrs. The grinding brush 47 is a brush-like structure. If it cannot be ground off, the cutting blade 34 is made into contact with the burr and the cutting operation is performed by increasing the pressure, thereby grinding and removing some harder burrs, and providing two processing solutions for the device.

[0062] Example 2: This example is an improvement made on the basis of Example 1. For details, please refer to Figure 1-Figure 11 , the grinding strip 4 also includes an outer gear ring 43, a driving spindle 44, a driving rack 45 and a transmission wheel 46;

[0063] A support base 42 is arranged transversely inside the strip-shaped placement box 41, and an outer gear ring 43 is provided at the bottom end of the support base 42. A driving spindle 44 is rotatably mounted on the bottom surface of the strip-shaped placement box 41, and a transmission wheel 46 located on the inner wall of the strip-shaped placement box 41 is meshed with a tooth groove on one side of the support base 42;

[0064] The transmission wheel 46 includes an upper gear, a fixed shaft and a second bevel gear, the fixed shaft is used to provide a fixing condition for the upper gear and the second bevel gear, the second bevel gear is used to be meshed with the first bevel gear through the tooth groove, and the upper gear is used to be meshed with the tooth groove of the outer gear ring 43;

[0065] A first bevel gear is arranged outside the driving main shaft 44, and the first bevel gear is used to transmit the power of the driving main shaft 44 to the supporting base 42 through the transmission wheel 46;

[0066] The transmission wheel 46 is used for transmission through tooth groove meshing with the first bevel gear;

[0067] The bottom surface of the inner wall of the body frame 2 is densely arranged with driving racks 45, and both ends of the driving main shaft 44 are provided with driving wheels, which are used to mesh with the driving racks 45;

[0068] A limiting frame 48 is arranged inside the strip-shaped placement box 41. The limiting frame 48 is used to rotatably install the support base 42 inside the strip-shaped placement box 41. A spiral cone block 49 is arranged inside the limiting frame 48, and a support roller 40 is arranged outside the support base 42.

[0069] The support roller 40 is used to support the support base 42 to be rotatably installed in the limiting frame 48 .

[0070] according to Figure 4 As shown, when the support belt 31 is located inside the main frame 2 and moves, the support belt 31 and the main frame 2 move relative to each other. When the support belt 31 moves, the driving rack 45 is meshed with the tooth groove of the driving wheel, so that the driving spindle 44 has a rotational power, and drives the first bevel gear on the outer surface of the driving spindle 44 to rotate, and then the first bevel gear and the transmission wheel 46 are meshed with the tooth groove to transmit the power to the support base 42, so that the support base 42 has a rotational power, and drives the grinding brush 47 to grind the burrs;

[0071] What needs to be considered is the meshing smoothness between the driving wheel and the driving rack 45 when the driving rack 45 is bent to the limit state. If necessary, the driving wheel can be improved. Improvement scheme 1 is that small racks are densely arranged on the outside of the driving wheel, and the small racks are meshed with the driving rack 45. The small racks and the driving rack 45 have the same appearance, and both are conical structures with a height of 0.1 mm and a width of 0.06 mm.

[0072] When the main frame 2 is in a convex limit state, according to the flexibility of the main frame 2 itself, the tooth spacing of the driving rack 45 will change accordingly at the bend, so that the meshing state of the small rack and the driving rack 45 changes, from the one-to-one meshing under normal conditions, to the current bending state of the main frame 2, so that the tooth spacing at the bend becomes larger, so that when the driving rack 45 meshes with the small rack, the number becomes more, and it becomes a meshing state of two small racks meshing with one tooth of the driving rack 45 or three to one. When the main frame 2 is in a concave state, it is the opposite; thereby ensuring the smoothness of the meshing between the driving wheel and the driving rack 45;

[0073] The size of the driving rack 45 is smaller than that of the main frame 2. Therefore, when the main frame 2 is bent at an angle, the driving rack 45 densely arranged on the inner wall of the main frame 2 can also form a meshing state with the driving wheel to meet the transmission requirements of both.

[0074] In addition, there is a second improvement plan. If necessary, the teeth of the drive rack 45 can be set to a structure that can be slightly extended and retracted by a spring to achieve a small adjustment of the tooth spacing, thereby adjusting the continuity of the engagement between the drive rack 45 and the drive wheel when the drive rack 45 is bent, thereby ensuring the smooth implementation of the working transmission requirements.

[0075] The support belt 31 drives the support base 42 to move, and then the support base 42 drives the grinding brush 47 to move, forming a grinding state, and on top of that, the support base 42 is provided with a rotation function, and while grinding by movement, it also has a rotation grinding effect, so that the grinding efficiency of the grinding brush 47 is further improved;

[0076] When the support base 42 rotates, the support roller 40 located inside the limit frame 48 rotates at the same time, and when rotating, it moves along the trajectory of the spiral cone block 49. When it passes one end of the spiral cone block 49, it falls down to form a drop, and causes a vibration effect after falling. By utilizing this vibration effect, the debris gathered inside the grinding brush 47 after grinding can be shaken out, thereby achieving a cleaning effect on the grinding brush 47 itself.

[0077] Example 3: This example is an improvement made on the basis of Example 2. For details, please refer to Figure 1-Figure 11 A collecting chassis 5 is provided at the lower end of the inner frame 23, and the collecting chassis 5 includes a flexible shell 51, a collecting shell 52, a closing paddle 53 and a first suction pipe 54, and a flexible shell 51 is provided on the lower surface of the inner frame 23, and closing paddles 53 are provided at both ends of the flexible shell 51 and located on the lower surface of the supporting belt 31;

[0078] The closing paddle 53 is used to achieve a sealing effect inside the flexible shell 51. The bottom surface of the flexible shell 51 is provided with a collecting shell 52, and the bottom end of the collecting shell 52 is provided with a first suction pipe 54;

[0079] A second suction pipe 55 is provided at the bottom end of the first suction pipe 54, and a third suction pipe 56 is provided at the bottom end of the second suction pipe 55. The diameter of the second suction pipe 55 is larger than that of the first suction pipe 54, and the diameter of the third suction pipe 56 is larger than that of the second suction pipe 55.

[0080] A collecting box 61 located in the outer shell 1 is installed on one side of the lower end of the side frame 21, and a collecting chamber 62 is provided inside the collecting box 61. An insertion rod 63 is provided at the top of the collecting box 61, and each insertion rod 63 is inserted between two grinding brushes 47;

[0081] A flow guide tube 64 is provided at the lower end of the collecting box 61 .

[0082] By providing suction inside the flexible shell 51, and the collecting chassis 5 is made of a flexible material as a whole, it can be changed along with the shape of the inner frame 23. When the debris polished by the polishing brush 47 falls on the upper surface of the support belt 31, the suction provided inside the flexible shell 51 sucks the debris on the upper surface of the support belt 31 through the guide groove 32, and attracts it to the inside, and then sucks it into the first suction pipe 54, and transports it to a designated position for collection, so that the device has a debris collection function during polishing, and avoids debris remaining on the upper surface of the support belt 31 to affect use;

[0083] When the grinding brush 47 moves to the inside of the collection box 61, the insertion rod 63 is inserted between the two grinding brushes 47, and the debris remaining between the grinding brushes 47 is shaken off, and the shape of the grinding brush 47 can be combed to keep it in the working shape;

[0084] By collecting through the collection box 61, the vibration effect of the support base 42 itself and the interlacing and combing function of the insertion rod 63 can maximize the removal and collection of debris remaining inside the grinding brush 47, so that the device has a series of operating modes such as grinding, debris collection, and cleaning functions of the grinding brush 47.

[0085] Example 4: This example is an improvement made on the basis of Example 3. For details, please refer to Figure 1-Figure 11 An elastic column 82 is also fixedly installed inside the outer shell 1, a fixing frame 81 is fixedly installed at the bottom end of the elastic column 82, a contact roller 83 is rotatably installed at the bottom end of the fixing frame 81, a first motor 84 is fixedly installed on one side of the fixing frame 81, and a driving gear is installed at one end of the contact roller 83 and the first motor 84. The first motor 84 is used to provide rotational power for the contact roller 83, and the contact roller 83 is used to provide rotational power for the support belt 31;

[0086] A suction shell 91 is provided at the bottom end of the outer shell 1, and a fan blade 92 is rotatably installed inside the suction shell 91. A second motor 93 is fixedly installed at the bottom end of the fan blade 92. A discharge pipe 94 is provided on one side of the suction shell 91, and the third suction pipe 56 and the guide pipe 64 are both connected to the suction shell 91.

[0087] The driving gears at one end of the contact roller 83 and one end of the first motor 84 mesh with each other to provide a power transmission function, so that the rotation force of the first motor 84 is transmitted to the contact roller 83, and the support belt 31 is driven to slide;

[0088] The fan blades 92 rotate to form centrifugal wind force, and provide suction force to the third suction pipe 56 and the guide pipe 64, and finally discharged from the discharge pipe 94;

[0089] The power of the support belt 31 is provided by the contact roller 83, and the height of the contact roller 83 directly affects the tightness of the support belt 31. At this time, the support of the elastic column 82 is used to provide expansion and contraction compensation for the support belt 31. The elastic column includes a telescopic seat, an inner core rod and a spring. The top of the telescopic seat is fixed to the top of the inside of the outer shell 1. The inner core rod is slidingly arranged inside the telescopic seat. The bottom end of the inner core rod is fixed to the top of the fixed frame 81. The spring is located between the top of the inside of the outer shell 1 and the top of the fixed frame 81, providing a downward supporting thrust for the fixed frame 81, so that the support belt 31 is always kept in a working state.

[0090] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0091] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A surface grinding device for automobile die-casting molds, comprising an outer shell (1) and a main frame (2) inside the outer shell (1), characterized in that: The main frame (2) comprises a side frame (21), a bending frame (22), an inner frame (23), a compensation notch (24) and a limiting roller (25); two side frames (21) are symmetrically installed inside the outer shell (1); the side frames (21) are rotatably connected to the outer shell (1); a bending frame (22) is fixedly installed at one end of the side frame (21); and an inner frame (23) is fixedly installed between the two bending frames (22); The main frames (2) are symmetrically arranged, and a grinding belt (3) is slidably installed between the two main frames (2); The grinding belt (3) comprises a supporting belt (31), a cutting blade (34), a supporting cross bar (36) and a limiting cross bar (37); the cutting blade (34) is arranged at the upper end of the supporting belt (31), and supporting cross bars (36) are fixedly installed on both sides of the supporting belt (31); The inner walls of the side frame (21), the bending frame (22) and the inner frame (23) are symmetrically arranged with limiting rollers (25), and the limiting rollers (25) are used to support the supporting belt (31) to slide inside the side frame (21), the bending frame (22) and the inner frame (23); The limiting roller (25) is divided into a front half and a rear half, and the limiting horizontal bar (37) is used to be clamped between the front half and the rear half.

2. The surface grinding device for automobile die-casting mold according to claim 1, characterized in that: A grinding strip (4) is also installed on the upper surface of the support belt (31), and the grinding strip (4) comprises a strip-shaped placement box (41), a support base (42) and a grinding brush (47); The upper surface of the support belt (31) is arranged with a strip-shaped placement box (41), the interior of the strip-shaped placement box (41) is rotatably mounted with a support base (42), and the top of the support base (42) is densely arranged with grinding brushes (47).

3. The surface grinding device for automobile die-casting mold according to claim 2, characterized in that: The grinding belt (3) further comprises a guide groove (32), an inner groove (33) and a slit groove (35); A guide groove (32) located in the support belt (31) is provided between each of the strip-shaped placement boxes (41) and the cutting blade (34); The lower end of the cutting blade (34) is provided with an inner groove (33) located in the supporting belt (31), and a slit groove (35) is provided between each of the cutting blades (34).

4. The surface grinding device for automobile die-casting mold according to claim 3 is characterized in that: A limiting push rod (7) is installed on one side of the outer shell (1), and the limiting push rod (7) includes a connecting frame (71), a limiting slide groove (72), a touch block (73) and a push rod (74). The connecting frame (71) is rotatably installed on both sides of the inner frame (23), and a push rod (74) is fixedly installed on one side of the connecting frame (71). A limiting slide groove (72) is provided on one side of the outer shell (1), and a touch block (73) is slidably installed inside the limiting slide groove (72). The push rod (74) is used to connect the connecting frame (71) and the touch block (73).

5. The surface grinding device for automobile die-casting mold according to claim 4, characterized in that: The grinding bar (4) further comprises an outer gear ring (43), a driving spindle (44), a driving rack (45) and a transmission wheel (46); A support base (42) is arranged transversely inside the strip-shaped placement box (41), an outer toothed ring (43) is provided at the bottom end of the support base (42), a driving spindle (44) is rotatably mounted on the bottom surface of the strip-shaped placement box (41), and a transmission wheel (46) located on the inner wall of the strip-shaped placement box (41) is meshed with a tooth groove on one side of the support base (42); The transmission wheel (46) comprises an upper gear, a fixed shaft and a second bevel gear, the fixed shaft is used to provide a fixing condition for the upper gear and the second bevel gear, the second bevel gear is used to be meshed with the first bevel gear through a tooth groove for transmission, and the upper gear is used to be meshed with the tooth groove of the outer gear ring (43); A first bevel gear is arranged outside the driving main shaft (44), and the first bevel gear is used to transmit the power of the driving main shaft (44) to the supporting base (42) through the transmission wheel (46); The bottom surface of the inner wall of the main frame (2) is densely arranged with driving racks (45), and both ends of the driving main shaft (44) are provided with driving wheels, and the driving wheels are used to mesh with the tooth grooves of the driving racks (45).

6. The surface grinding device for automobile die-casting mold according to claim 5, characterized in that: A limiting frame (48) is also arranged inside the strip-shaped placement box (41), and the limiting frame (48) is used to rotatably install the support base (42) inside the strip-shaped placement box (41). A spiral cone block (49) is arranged inside the limiting frame (48), and a support roller (40) is arranged outside the support base (42); The support roller (40) is used to support the support base (42) and is rotatably mounted in the limiting frame (48).

7. The surface grinding device for automobile die-casting mold according to claim 6, characterized in that: A collecting base frame (5) is provided at the lower end of the inner frame (23), and the collecting base frame (5) comprises a flexible shell (51), a collecting shell (52), a closing paddle (53) and a first suction pipe (54); a flexible shell (51) is provided on the lower surface of the inner frame (23), and closing paddles (53) are provided at both ends of the flexible shell (51) and are located on the lower surface of the supporting belt (31); The closing paddle (53) is used to achieve a closing effect inside the flexible shell (51); a collecting shell (52) is provided on the bottom surface of the flexible shell (51); and a first suction pipe (54) is provided at the bottom end of the collecting shell (52); A second suction pipe (55) is provided at the bottom end of the first suction pipe (54), and a third suction pipe (56) is provided at the bottom end of the second suction pipe (55); the diameter of the second suction pipe (55) is greater than the diameter of the first suction pipe (54), and the diameter of the third suction pipe (56) is greater than the diameter of the second suction pipe (55).

8. The surface grinding device for automobile die-casting mold according to claim 7, characterized in that: A collecting box (61) located inside the outer shell (1) is installed on one side of the lower end of the side frame (21), a collecting chamber (62) is provided inside the collecting box (61), and an insertion rod (63) is provided at the top end of the collecting box (61), and each of the insertion rods (63) is inserted between two grinding brushes (47); A flow guide tube (64) is provided at the lower end of the collecting box (61).

9. The surface grinding device for automobile die-casting mold according to claim 8, characterized in that: An elastic column (82) is also fixedly installed inside the outer shell (1); a fixing frame (81) is fixedly installed at the bottom end of the elastic column (82); a contact roller (83) is rotatably installed at the bottom end of the fixing frame (81); a first motor (84) is fixedly installed on one side of the fixing frame (81); one end of the contact roller (83) and the first motor (84) are both equipped with driving gears; the first motor (84) is used to provide rotational power for the contact roller (83); and the contact roller (83) is used to provide rotational power for the support belt (31).

10. The surface grinding device for automobile die-casting mold according to claim 9, characterized in that: A suction shell (91) is provided at the bottom end of the outer shell (1), a fan blade (92) is rotatably mounted inside the suction shell (91), a second motor (93) is fixedly mounted at the bottom end of the fan blade (92), a discharge pipe (94) is provided on one side of the suction shell (91), and the third suction pipe (56) and the guide pipe (64) are both connected to the suction shell (91).

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