A mold positioning rod polishing workbench

Abstract

The present invention discloses a mold positioning rod polishing workbench, which relates to the field of polishing processing, including a machine base, a chuck, a workpiece loading mechanism and a polishing mechanism are arranged on the machine base, a carrier is connected to a rotating part for driving its rotation, and two groups of workpiece clamping assemblies are provided and symmetrically installed at both ends of the carrier, which include a clamp and a first driving member. When the two clamps are located on the same side of the carrier, the clamping axes of the two clamps are aligned, and the other end of the workpiece clamped on the clamp can be clamped by the other clamp, so that the workpiece can be switched between the two clamps; by providing the carrier and the workpiece clamping assembly, the clamping position switching of the same workpiece between the two clamps is realized. After polishing of one end of the workpiece is completed, the clamp can clamp the other end of the workpiece by switching the operation, so that the other end of the workpiece can be polished without manual operation, thereby improving processing efficiency. It is also applicable to small-batch workpiece polishing operations, and equipment costs and labor costs are significantly reduced.

Description

Technical Field

[0001] The invention relates to a polishing processing technology, in particular to a polishing workbench for a mold positioning rod. Background Art

[0002] The locating rod is a core component of the mold clamping guide. Its surface finish and dimensional accuracy directly affect the assembly accuracy and service life of the mold. Traditional locating rod polishing operations rely heavily on manual operation. After polishing one end, manual unloading, flipping, and re-clamping are required to complete the polishing of both ends of the locating rod. This processing efficiency is low, and manual operation is also prone to clamping errors, affecting the coaxiality of the locating rod.

[0003] In the prior art, there are also methods of loading and unloading by using automated / semi-automated equipment such as robotic arms. However, it is necessary to remove the workpiece and move it to a temporary transfer area, set up a workpiece turning device to turn the positioning rod, and then re-clamp it, which is not conducive to continuous processing of the workpiece and has limited improvement in processing efficiency.

[0004] Furthermore, some technologies use double-station alternating operations, but they still require an additional flipping mechanism to switch the workpiece clamping position. Although the efficiency has been improved, it is still limited by the moving stroke and flipping operation time, and there is still room for improvement in efficiency. Although some sophisticated multi-axis CNC polishing devices have guaranteed accuracy and efficiency, the equipment cost is relatively high and it is difficult to adapt to small-batch processing needs. Summary of the Invention

[0005] The purpose of the present invention is to provide a mold positioning rod polishing workbench to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a mold positioning rod polishing workbench, comprising a machine base, on which a chuck and a polishing mechanism are provided, and further comprising: a carrier connected to a rotating member for driving the carrier to rotate;

[0007] A workpiece clamping assembly, comprising two groups symmetrically mounted at both ends of the carrier, the workpiece clamping assembly comprising a fixture and a first drive member, the fixture being rotationally connected to the carrier via a rotating shaft, the first drive member being used to drive the fixture to rotate about its rotational connection with the carrier;

[0008] a third driving member, which is used to drive the workpiece clamping assembly to move along the chuck setting direction;

[0009] a workpiece feeding mechanism for delivering the positioning rod to the workpiece clamping assembly;

[0010] When the two fixtures are located on the same side of the carrier, the clamping axes of the two fixtures are aligned, and the other end of the workpiece clamped on the fixture can be clamped by the other fixture, so that the workpiece can be switched between the two fixtures.

[0011] Furthermore, the carrier is placed horizontally, and the clamp can rotate 180° clockwise / counterclockwise.

[0012] Furthermore, the carrier is placed vertically, and the fixture can be rotated 90° clockwise / counterclockwise.

[0013] Furthermore, the carrier is connected to a second driving member for driving the carrier to move in a vertical direction.

[0014] Furthermore, the rotating part includes a support frame, which is fixedly installed on one side of the mobile platform. A rotating column is fixedly connected to the middle of one side of the platform. The rotating column is rotatably connected to one side of the support frame, and the rotating column is connected to a second motor for driving its rotation.

[0015] Furthermore, the first driving member includes a first motor, which is fixedly installed in the carrier, and one end of the output shaft of the motor is connected to a first transmission wheel, a second transmission wheel is installed on the rotating shaft, and the first transmission wheel and the second transmission wheel are connected by a transmission belt.

[0016] Furthermore, the mold positioning rod polishing workbench also includes a collection box for collecting the processed positioning rods.

[0017] Furthermore, two groups of chucks and polishing mechanisms are provided and are symmetrically distributed, and the workpiece clamping assembly can move between the two chucks.

[0018] Compared with the prior art, the mold positioning rod polishing workbench provided by the present invention has the following beneficial effects:

[0019] By setting up the carrier and workpiece clamping assembly, the clamps are aligned with the axis on the same side of the carrier, realizing the switching of the clamping position of the same workpiece between the two clamps. After polishing one end of the workpiece is completed, the clamp can switch to clamp the other end of the workpiece, so that the other end of the workpiece can be polished without manual operation, significantly reducing the non-processing time during operation. It is also applicable to the polishing of small batches of workpieces, and significantly reduces equipment costs and labor costs.

[0020] At the same time, the coordinated operation of the workpiece clamping assembly and the carrier provides a variety of processing methods for rod-shaped workpieces in horizontal or vertical installation modes, which is suitable for a variety of polishing machines, improves the applicability and practicality of the device, and effectively solves the problems of low efficiency and poor consistency of traditional polishing equipment, providing a reliable solution for efficient and high-precision polishing of mold positioning rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A front view of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A perspective view of a rotating member and a workpiece clamping assembly provided in an embodiment of the present invention;

[0024] Figure 3 The embodiment of the present invention provides Figure 2 Schematic diagram of the local structure;

[0025] Figure 4 A schematic diagram of a positioning rod on a workpiece clamping assembly provided by an embodiment of the present invention switching between two clamps;

[0026] Figure 5 A schematic diagram of a workpiece clamping assembly provided by an embodiment of the present invention clamping different positioning rods;

[0027] Figure 6 A schematic diagram of a workpiece clamping assembly according to an embodiment of the present invention performing alternating processing on a workpiece;

[0028] Figure 7 A schematic diagram of a carrier 5 provided in an embodiment of the present invention when placed vertically;

[0029] Figure 8 Schematic diagram of the carrier 5 provided in an embodiment of the present invention being placed vertically and moving in the vertical direction to switch workpieces;

[0030] Figure 9 A schematic diagram of the position of a workpiece clamping assembly when the chuck provided in an embodiment of the present invention is vertical;

[0031] Figure 10 A schematic diagram of a workpiece clamping assembly corresponding to two sets of chucks and a polishing mechanism provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Machine base;

[0034] 2. Chuck;

[0035] 3. Polishing mechanism;

[0036] 4. Positioning rod;

[0037] 5. Carrier;

[0038] 6. Rotating member; 61. Support frame; 62. Rotating column; 63. Limiting seat; 64. Limiting column;

[0039] 7. Workpiece clamping assembly; 71. Clamp; 72. First driving member; 721. First motor; 722. First transmission wheel; 723. Second transmission wheel; 724. Transmission belt; 73. Rotating shaft;

[0040] 8. Collection box;

[0041] 9. Third driving member; 91. Moving platform; 92. Threaded rod; 93. Third motor. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] See also Figure 1 - Figure 10 A mold positioning rod polishing workbench includes a machine base 1, a chuck 2 and a polishing mechanism 3 are provided on the machine base 1, wherein the chuck 2 is used to fix the positioning rod 4 to be processed, and then the positioning rod 4 is polished by the polishing mechanism 3. The polishing workbench also includes:

[0044] a carrier 5 connected to a rotating member 6 for driving the carrier 5 to rotate;

[0045] The workpiece clamping assembly 7 is provided with two groups and is symmetrically mounted at both ends of the carrier 5. The workpiece clamping assembly 7 includes a clamp 71 and a first driving member 72. The clamp 71 is rotationally connected to the carrier 5 via a rotating shaft 73. The first driving member 72 is used to drive the clamp 71 to rotate around the rotation connection between the clamp 71 and the carrier 5.

[0046] When the two clamps 71 are located on the same side of the carrier 5, the clamping axes of the two clamps 71 are aligned, and the other end of the workpiece clamped on the clamp 71 can be clamped by the other clamp 71, so that the workpiece can be switched between the two clamps 71 (see Figure 4 );

[0047] For example, the carrier 5 can be fixed. When in use, the chuck 2 moves on the machine base 1 and moves closer to or away from the carrier 5; or the carrier 5 can move on the machine base 1 and move closer to or away from the chuck 2. During the processing of the positioning rod 4, the selection can be made according to the processing environment (whether the polishing wheel can move, whether the chuck 2 can move);

[0048] In one embodiment of the present invention, the stage 5 is taken as an example in a moving manner, such as Figure 1As shown, the carrier 5 drives the workpiece clamping assembly 7 to move closer to or away from the chuck 2 to complete the picking and placing operations of the workpiece to be processed and the workpiece after processing, and performs continuous and efficient automated processing on the positioning rod 4, wherein the carrier 5 is installed on the mobile platform 91, and the mobile platform 91 is slidably installed on the machine base 1. The mobile platform 91 is driven by a threaded rod 92, and the threaded rod 92 is connected to a third motor 93 for driving its rotation. This method is an existing technology and will not be described in detail here. When the mobile platform 91 moves, it drives the carrier 5 and the workpiece clamping assembly 7 thereon to move synchronously, thereby driving the clamped workpiece to move.

[0049] In one embodiment of the present invention, the rotating member 6 includes a support frame 61, which is fixedly mounted on one side of the mobile platform 91. A rotating column 62 is fixedly connected to the middle of one side of the carrier 5. The rotating column 62 is rotatably connected to one side of the support frame 61, and the rotating column 62 is connected to a second motor for driving its rotation. The second motor drives the rotating column 62 to rotate, thereby driving the carrier 5 to rotate.

[0050] The rotating member 6 also includes a limit seat 63 arranged on the top of the support frame 61, and a limit column 64 installed on the side of the carrier 5 close to the support frame 61. When the carrier 5 rotates, the limit column 64 is driven to rotate synchronously. By setting the limit seat 63 at the corresponding position, the rotation angle of the carrier 5 is limited to 180°, that is, when the angle of the forward and reverse rotation of the carrier 5 reaches 180°, the limit column 64 is blocked by the limit seat 63. The two clamps 71 exchange positions during the reciprocating rotation of the carrier 5, ensuring that the two clamps 71 can be accurately aligned with the chuck 2 after each rotation of the carrier 5, ensuring that the workpiece always remains stable during the processing;

[0051] Through the cooperation of two sets of symmetrically distributed workpiece clamping components and the rotatable carrier, seamless switching of the workpiece between the fixtures is achieved. The carrier is driven by the rotating part to rotate, and the rigid limit of the limit column and the limit seat is used to ensure that the rotation angle is strictly controlled within ±180°, so that the axes of the two fixtures are completely aligned with the chuck after switching (coaxiality error ≤ 0.005mm).

[0052] In one embodiment of the present invention, Figure 1 As shown, the first driving member 72 includes a first motor 721, which is fixedly installed in the carrier 5, and one end of the output shaft of the motor is connected to the first transmission wheel 722, and the second transmission wheel 723 is installed on the rotating shaft 73. The first transmission wheel 722 and the second transmission wheel 723 are connected by a transmission belt 724, and the rotation of the rotating shaft 73 is driven to drive the clamp 71 to rotate; it should be noted that it can also be driven by other methods in the existing technology, such as directly connecting the first motor 721 to the rotating shaft 73, and directly driving the rotating shaft 73 to rotate by the first motor 721.

[0053] In one embodiment of the present invention, the carrier 5 is placed horizontally, and the fixture 71 can rotate 180° clockwise / counterclockwise. The following is a detailed description of the workpiece processing scenario.

[0054] The implementation scenario when processing the workpieces (positioning rods 4) one by one (processing the next workpiece after continuous processing at both ends of the workpiece) is as follows:

[0055] The workpiece to be processed is transported to the chuck 2 for clamping by the workpiece clamping assembly 7, and then one end of the workpiece is polished. After polishing is completed, the workpiece is unloaded by the workpiece clamping assembly 7. When unloading, one of the clamps 71 clamps the polished end of the workpiece. Figure 4 and Figure 5 As shown, the fixture 71 is along Figure 4 The direction indicated by the arrow in a is rotated 180°. Figure 4 As shown in b, the unpolished end of the workpiece is clamped by another clamp 71. The clamp 71 on the left side of the figure is released, and the clamp 71 on the right side is rotated 180 degrees, showing as shown in FIG. Figure 4 c, and then the stage 5 rotates 180 degrees along the rotation direction in the figure, presenting Figure 4 In the state shown in d, the two clamps 71 have switched positions. As the workpiece clamping assembly 7 transports it to the chuck 2 for clamping again, the unpolished end of the workpiece will be suspended in the external area of the chuck 2, and thus polished by the polishing mechanism 3 to complete the polishing operation at both ends of the workpiece. It should be noted that if the entire workpiece needs to be polished, the length of the workpiece clamped by the chuck 2 should be less than half the length of the workpiece.

[0056] In some optional embodiments, when all the processing of a workpiece is completed, a new workpiece to be processed can be loaded onto the workpiece clamping assembly 7 in a timely manner, such as Figure 5 As shown (the hatched area on the workpiece indicates that it has been ground and polished), during the processing of the last end of the workpiece, the new workpiece is clamped by the fixture 71 away from the chuck 2 ( Figure 5 a), then the workpiece clamping assembly 7 moves toward the chuck 2 to clamp and unload the processed workpiece. At this time, both clamps 71 hold the workpiece ( Figure 5 In b, the left clamp 71 holds the processed workpiece, and the right clamp 71 holds the new workpiece). After both clamps 71 are rotated 180° ( Figure 5 c), the stage 5 switches the positions of the two clamps 71 by rotating ( Figure 5 d) Finally, a new workpiece is loaded into the chuck 2 and the processed workpiece is removed. It is worth mentioning that Figure 5 b and Figure 5The movement sequence of c can be exchanged, specifically on the premise that the two workpieces will not interfere with each other, and the specific movement sequence can be adjusted according to the implementation method.

[0057] Through the workpiece clamping assembly, after polishing one end of the workpiece is completed, the fixture drives the rotating shaft to rotate 180° through the first drive member, and the unprocessed end of the workpiece is automatically sent to another fixture for clamping. The next process can be entered without stopping, which effectively improves the processing efficiency. The coordination of the rotating part and the mobile platform provides a structural basis for the integration of automatic loading mechanisms (such as robots), supporting subsequent upgrades to fully automated production lines.

[0058] Implementation scenario for alternating workpiece processing (processing one end of a workpiece before processing the next end of the workpiece):

[0059] like Figure 6 As shown, during the processing of a workpiece (the previous one), a new workpiece (the next one) is loaded onto the workpiece clamping assembly 7 in a timely manner, as shown in FIG. Figure 6 a. After the grinding and polishing of one end of the previous workpiece is completed, the workpiece clamping assembly 7 removes the previous workpiece and loads the next workpiece into the chuck 2 for processing ( Figure 6 b and Figure 6 c), then the workpiece clamping assembly 7 performs the clamping end switching of the previous workpiece ( Figure 6 d) The polished end of the previous workpiece is placed in a state to be clamped. When one end of the next workpiece is polished and removed from the chuck 2, the unpolished end of the previous workpiece is fed into the chuck 2 for further processing. This alternating process is repeated. Figure 5 and Figure 6 In the figure, the workpiece with a solid edge is the previous workpiece, the workpiece with a dotted edge is the next workpiece, and the shaded area represents the end after grinding. It should be noted that Figure 6 After the last workpiece in a is clamped, the downward rotation operation can be performed, so that the two workpieces can directly exchange positions after the carrier 5 rotates, avoiding unnecessary waiting time.

[0060] It should be understood that for a scenario where only one end of the workpiece needs to be processed, the workpiece clamping assembly 7 provided in this embodiment can also perform an automated loading and unloading process. Specifically, reference can be made to Figure 6 , after the previous workpiece is processed ( Figure 6 a), remove it from the chuck 2, and rotate the next workpiece to the docking position of the chuck 2 by rotating the carrier 5 ( Figure 6 c) The previous workpiece can be directly unloaded, and the workpiece that only needs to be processed at one end can be processed continuously in this reciprocating manner, thereby improving production efficiency, simplifying the operation process, improving processing accuracy and consistency, reducing labor costs, and optimizing the overall operation efficiency of the production line.

[0061] In one embodiment of the present invention, another arrangement of the carrier 5 is provided, as shown in 7, the carrier 5 can also be placed vertically, and the clamp 71 can rotate 90 degrees clockwise / counterclockwise. The specific implementation scenario is basically the same as the above implementation scenario, except that the rotation angle of the clamp 71 on the carrier 5 is smaller, and the time required for switching the workpiece clamping position is less. After one end of the workpiece is polished, the workpiece clamping assembly 7 takes the workpiece out of the chuck 2 ( Figure 7 a), then switch the clamping position ( Figure 7 b and Figure 7 c), finally, the stage 5 rotates 180° to place the workpiece in the axial position of the chuck 2 ( Figure 7 d) After the chuck 2 is clamped, the other end of the workpiece is processed. It should be noted that Figure 7 The position shown in the figure is where the lower clamp 71 and the chuck 2 are docked. In some other embodiments, the upper clamp 71 and the chuck 2 may also be in the docking position. The specific position can be selected according to the processing environment of the workbench (space size or workpiece posture in previous and subsequent processes, etc.);

[0062] It is worth mentioning that Figure 9 As shown, some chucks 2 may be vertical, and the workpiece clamping method provided in this application is also applicable. The specific implementation scenario is basically the same as the above, and will not be described in detail here;

[0063] In this embodiment (variation), the carrier 5 can also be connected to a second driving member for driving it to move in the vertical direction, thereby eliminating the setting of the rotating member 6. Figure 8 As shown, after the workpiece is clamped on the workpiece clamping assembly 7, the second driving member can be used to drive the carrier 5 to move ( Figure 8 b), so that the two clamps 71 can move to a position opposite to the clamping axis of the chuck 2 ( Figure 8 c) This method can simplify the moving steps and avoid the centrifugal force affecting the stability of the clamping when the workpiece rotates, but its disadvantage is that it requires a certain amount of longitudinal moving space. It is generally suitable for work polishing tables with a certain height difference between the chuck 2 and the machine base 1. The second driving member is a general linear driving mechanism, which is installed on the mobile platform 91 and is used to drive the carrier 5 to move in the vertical direction.

[0064] In one embodiment of the present invention, Figure 10As shown, one workpiece clamping assembly 7 can correspond to two groups of chucks 2 and polishing mechanisms 3. In the case of some workpieces that require a long grinding and polishing time, one workpiece clamping assembly 7 can be moved between the two chucks 2 during the machining gap to improve machining efficiency. Specifically, two groups of chucks 2 and polishing mechanisms 3 are provided and are symmetrically distributed. The workpiece clamping assembly 7 can be moved between the two chucks 2. The workpiece clamping assembly 7 is connected to a third driving member 9 for driving it to move along the arrangement direction of the chucks 2. In this embodiment, the third driving member 9 can be in the form of the aforementioned moving platform 91, the third motor 93, and the threaded rod 92, which will not be described in detail here.

[0065] For the vertical placement of the carrier 5, multiple sets of chucks 2 can also be provided for implementation. The method is similar to the above. The multiple sets of chucks 2 can be arranged in a linear array or a circular array. The workpiece clamping assembly 7 provided in the present application can be adaptively arranged according to the number and method of the existing chucks 2. The number of workpiece clamping assemblies 7 can also be selected and is not limited in the invention.

[0066] In one embodiment of the present invention, taking the carrier 5 as an example, a collection box 8 can be provided to collect the processed positioning rods 4. Figure 1 As shown, the collection box 8 can be moved on the machine base 1 , and when the processed workpiece is transferred to one side of the collection box 8 , it can directly fall into the collection box 8 .

[0067] In one embodiment of the present invention, the polishing workbench of the mold positioning rod 4 also includes a workpiece loading mechanism, which is used to place the positioning rod 4 to be processed on the fixture 71 for clamping and loading. The workpiece loading mechanism is a general manipulator, and can also be directly loaded manually. When loading manually, it is only necessary to place the new workpiece to be processed on the fixture 71 for clamping.

[0068] In one embodiment of the present invention, the two clamps 71 can also be set to be movable. Specifically, the two clamps can be slidably installed on the carrier 5 and can move closer to or farther away from each other (driven by a bidirectional lead screw or a bidirectional threaded rod), so that positioning rods 4 of different lengths can be clamped. By adjusting the clamping position of the workpiece, single-end or double-end polishing operations are also supported to meet diverse processing needs.

[0069] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present invention.

Claims

1. A mold positioning rod polishing workbench, comprising a machine base (1), a chuck (2) and a polishing mechanism (3) being provided on the machine base (1), characterized in that: A carrier (5), the carrier (5) being connected to a rotating member (6) for driving the carrier (5) to rotate; A workpiece clamping assembly (7) is provided with two groups and is symmetrically mounted at both ends of the carrier (5). The workpiece clamping assembly (7) includes a clamp (71) and a first driving member (72). The clamp (71) is rotationally connected to the carrier (5) via a rotating shaft (73). The first driving member (72) is used to drive the clamp (71) to rotate around the rotation connection between the clamp and the carrier (5). A third driving member (9) for driving the workpiece clamping assembly (7) to move along a setting direction of the chuck (2); a workpiece feeding mechanism for feeding the positioning rod (4) to the workpiece clamping assembly (7); When the two clamps (71) are located on the same side of the carrier (5), the clamping axes of the two clamps (71) are aligned, and the other end of the workpiece clamped on the clamp (71) can be clamped by the other clamp (71), so that the workpiece can be switched between the two clamps (71); The carrier (5) is placed horizontally, and the clamp (71) can rotate 180° clockwise / counterclockwise. When unloading, one of the clamps (71) clamps one end of the workpiece after polishing, and then the clamp (71) rotates 180°. After the rotation, the other end of the workpiece is clamped by another clamp (71), and then the clamp (71) rotates 180°. Then the carrier (5) rotates 180°, and the workpiece clamping component (7) transports it to the same chuck (2) for clamping again.

2. A mold positioning rod polishing workbench according to claim 1, characterized in that: The rotating member (6) includes a support frame (61), the support frame (61) is fixedly mounted on one side of the mobile platform (91), a rotating column (62) is fixedly connected to the middle of one side of the carrier (5), the rotating column (62) is rotatably connected to one side of the support frame (61), and the rotating column (62) is connected to a second motor for driving the rotating column (62) to rotate.

3. A mold positioning rod polishing workbench according to claim 1, characterized in that: The first driving member (72) includes a first motor (721), the first motor (721) is fixedly mounted in the carrier (5), and one end of the output shaft of the motor is connected to a first transmission wheel (722), a second transmission wheel (723) is mounted on the rotating shaft (73), and the first transmission wheel (722) and the second transmission wheel (723) are connected in transmission via a transmission belt (724).

4. A mold positioning rod polishing workbench according to claim 1, characterized in that: It also includes a collection box (8) for collecting the processed positioning rods (4).

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