A multi-station synchronous grinding screwdriver head edge grinding machine

Abstract

The present invention discloses a screwdriver bit edge grinding machine with multi-station synchronous grinding, which relates to the technical field of screwdriver processing and includes a base. A plurality of conveying mechanisms are arranged on the base; grinding mechanisms are arranged at the tails of the conveying mechanisms; the conveying mechanism includes: a moving frame, which is slidably installed on the top of the base and is used for conveying screwdrivers; two support blocks, which are symmetrically arranged on both sides of the moving frame along the conveying direction of the moving frame and are located on both sides of the moving path of the screwdriver; clamping members for fixing the screwdriver are rotatably connected to the support blocks; two positioning blocks, which are symmetrically arranged with respect to the moving frame, and positioning grooves are formed on the inner sides, and the inner contour of the positioning groove matches the outer contour of the screwdriver bit. The present invention can make the screwdriver blank be at an accurate angle when approaching the edge grinding mechanism, and can effectively improve the grinding accuracy and quality of the screwdriver blank.

Description

Technical Field

[0001] This invention relates to the field of screwdriver processing technology, specifically to a multi-station synchronous grinding screwdriver head edge grinding machine. Background Technology

[0002] The bit (working end) and insert end (the end where the handle is installed) of a flathead screwdriver are usually formed efficiently through a stamping process; after stamping, the bit end face of the screwdriver blank needs to be ground to meet the accuracy requirements.

[0003] When grinding screwdriver blanks, they need to be clamped and fixed. Existing grinding devices typically clamp the cylindrical section of the screwdriver blank. During the processing and transport of the screwdriver, oil stains easily adhere to its surface. During grinding, the screwdriver needs to be close to the grinding disc, and the clamped screwdriver blank is prone to rotation, causing the grinding end face to shift and reducing grinding accuracy. (See the instruction manual attached.) Figure 1 As shown, since the insert end of the screwdriver blank is usually pressed into a flat shape, some existing grinding devices choose the insert end as the clamping end to prevent the screwdriver blank from rotating during the grinding process. However, in the actual production process, due to the influence of machining accuracy, stamping die wear, etc., the plane z of the insert end and the line y of the bit end will be non-parallel. This will cause the bit to be skewed when it contacts the grinding disc when the insert end is selected as the clamping end, which will affect the grinding accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-station synchronous grinding screwdriver head edge grinding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-station synchronous grinding screwdriver tip edge grinding machine, comprising a base, on which multiple conveying mechanisms are arranged; each conveying mechanism is equipped with an edge grinding mechanism at its tail end; the conveying mechanism includes:

[0006] A movable rack, slidably mounted on top of the base, is used to transport screwdrivers;

[0007] Two support blocks are symmetrically arranged on both sides of the moving frame along the conveying direction of the moving frame, and located on both sides of the screwdriver's moving path; each support block is rotatably connected to a clamping device for fixing the screwdriver;

[0008] Two positioning blocks are arranged symmetrically about the movable frame, and each has a positioning groove on its inner side. The inner contour of the positioning groove matches the outer contour of the screwdriver bit.

[0009] Two drive units are used to drive two support blocks to move the clamping parts closer to the screwdriver, so that the clamping parts hold the screwdriver, and drive the support blocks and clamping parts to move synchronously with the moving frame and the screwdriver.

[0010] Two drive units are used to drive the positioning blocks to move away from the screwdriver after the two positioning blocks have completed positioning the screwdriver;

[0011] Two locking units are respectively set on two support blocks and are used to fix the support blocks and clamping parts relative to each other after the screwdriver has finished positioning.

[0012] As a further embodiment of the present invention, the clamping member includes a clamping block one and a clamping block two; the clamping block one and the clamping block two are fixedly connected; the clamping block one is provided with a slot that can match the screwdriver mounting end; the clamping block two is configured as an arc shape that can match the cylindrical section of the screwdriver.

[0013] As a further embodiment of the present invention, the slot is configured as V-shaped.

[0014] As a further embodiment of the present invention, the drive unit includes a guide rail and a linear drive unit; the guide rail is fixedly installed on the top of the base and slidably connected to a slider, the slider is slidably connected to a slide rod, and the slide rod is perpendicular to the sliding direction of the slider; the slide rod is fixedly connected to a support block; the linear drive unit is used to drive the slide rod to move towards the side closer to the screwdriver.

[0015] As a further embodiment of the present invention, the linear drive unit includes a drive rod, which is fixed to the base and is configured in a stepped shape. The slide rod is movable along the end face of the drive rod. A spring for resetting is fitted on the slide rod.

[0016] As a further embodiment of the present invention, the second driving unit includes a guide groove and a telescopic rod; the guide groove is composed of a horizontal groove and an obtuse angle between the horizontal groove and the obtuse groove; a guide rod is slidably fitted inside the guide groove; the guide rod is fixedly connected to a positioning block; one end of the telescopic rod is fixed to the positioning block, and the other end is fixed to a slider two; the slider two is slidably fitted to a guide rail two, and the guide rail two is fixed to the base; a spring two for resetting is installed inside the telescopic rod; a spring three for resetting the slider two is installed on the guide rail two.

[0017] As a further embodiment of the present invention, the locking unit includes a pressure block and an electric telescopic component; the pressure block is slidably connected to the support block; the electric telescopic component is used to drive the pressure block to move closer to the two sides of the clamping block.

[0018] As a further embodiment of the present invention, the end of the pressure block is configured as an arc shape that matches the outer wall of the clamping block.

[0019] As a further embodiment of the present invention, the edge grinding mechanism includes a grinding disc and a motor; the grinding disc is fixedly connected to the output shaft of the motor.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention utilizes a clamping component and a support block. The clamping component pre-fixes the screwdriver during the screwdriver blank feeding process. The clamping component and support block, together with the drive unit, provide a stronger thrust to the screwdriver blank. Through the placement of a positioning block, positioning groove, and locking unit, after the screwdriver blank is inserted into the positioning groove, the screwdriver bit can be aligned to the grinding state. Then, the locking unit fixes the position of the clamping component, ensuring that the support block and clamping component are relatively fixed. This guarantees that the screwdriver blank is completely fixed after being aligned to the grinding state, ensuring that the screwdriver blank is at the correct angle when it subsequently enters the grinding mechanism, effectively improving the grinding accuracy and quality of the screwdriver blank. Attached Figure Description

[0022] Figure 1 This is a diagram illustrating the background technology of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the driving unit of the present invention;

[0025] Figure 4 This is a top view (sectional view) of the structure of a drive unit of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of clamping block one and clamping block two of the present invention;

[0027] Figure 6 This is a cross-sectional schematic diagram of the second driving unit structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the positioning block structure of the present invention;

[0029] Figure 8 This is a cross-sectional schematic diagram of the locking unit structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the pressing block structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the first working state of the present invention;

[0032] Figure 11 This is a schematic diagram of the second working state of the present invention;

[0033] Figure 12 This is a schematic diagram of the third working state of the present invention;

[0034] Figure 13 This is a schematic diagram illustrating the working principle of the clamping component of the present invention.

[0035] The attached figures are labeled as follows:

[0036] 1-Base, 2-Moving frame, 3-Clip block, 4-Clamping component, 5-Clamping block one, 6-Clamping block two, 7-Support block, 8-Slide rod, 9-Slider one, 10-Spring one, 11-Guide rail one, 12-Drive rod, 13-Positioning block, 14-Guide rod, 15-Telescopic rod, 16-Slider two, 17-Spring two, 18-Guide rail two, 19-Spring three, 20-Pressure block, 21-Electric telescopic component, 22-Grinding disc, 23-Motor, 24-Guide slide groove. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-13 In the attached diagram, x represents a screwdriver blank. This invention provides a technical solution: a multi-station synchronous grinding screwdriver tip edge grinding machine, comprising a base 1, on which multiple conveying mechanisms are arranged; each conveying mechanism has an edge grinding mechanism at its tail end; the conveying mechanism includes a movable frame 2, two support blocks 7, two positioning blocks 13, two drive units one, two drive units two, and two locking units; the movable frame 2 is slidably mounted on the top of the base 1 and is used to convey screwdrivers; the two support blocks 7 are symmetrically arranged on both sides of the movable frame 2 along the conveying direction of the movable frame 2, and are located on both sides of the screwdriver's movement path; each support block 7 is rotatably connected to a clamping member 4 for fixing the screwdriver; the two positioning blocks 13 are symmetrically arranged about the movable frame 2, and each has a positioning groove on its inner side, the inner contour of which is aligned with the screwdriver tip. The outer contours match; when the screwdriver bit is inserted into the positioning slot in the unlocked state, the clamping member 4 can rotate relative to the support block 7; the two drive units are used to drive the two support blocks 7 to move the clamping member 4 closer to the screwdriver, so that the clamping member 4 clamps the screwdriver, and drive the support block 7 and the clamping member 4 to move synchronously with the moving frame 2 and the screwdriver; the two drive units are used to drive the positioning block 13 to move away from the screwdriver after the two positioning blocks 13 have completed the positioning of the screwdriver; the two locking units are respectively set on the two support blocks 7, and are used to fix the support block 7 and the clamping member 4 relative to each other after the screwdriver has completed the positioning.

[0039] refer to Figure 2A robotic arm or similar gripping mechanism places the screwdriver blank onto a U-shaped locking block 3 on the moving frame 2. The moving frame 2, driven by a stepper motor, then moves the screwdriver blank towards the edge-grinding mechanism. (Reference) Figure 10 When the insert end of the screwdriver blank moves between the two clamping parts 4, the drive unit drives the support block 7 and the clamping parts 4 to move synchronously towards the side closer to the blank, and the two clamping parts 4 cooperate to clamp the insert end of the blank; then the drive unit drives the support block 7, the clamping parts 4, and the blank to move synchronously towards the side closer to the grinding mechanism; as Figure 11 As shown, the screwdriver bit is aligned to the grinding state (i.e., the grinding surface of the bit is parallel or perpendicular to the grinding mechanism) until it is inserted into the positioning grooves of the two closed positioning blocks 13; Reference Figure 13 When the insert end face z of the screwdriver blank aligns with the line y of the bit end... Figure 1 In the indicated state, after the bit is inserted into the positioning slot, the insert end rotates synchronously with the bit, causing the clamping part 4 to rotate around the screwdriver axis on the support block 7. This continues until the bit alignment is complete. Then, the locking unit fixes the position of the clamping part 4, ensuring the support block 7 and the clamping part 4 are relatively fixed. With the cooperation of the support block 7, the clamping part 4, and the locking unit, the screwdriver blank is completely fixed, and the support block 7 remains horizontal throughout its movement. This ensures the screwdriver blank is at the correct angle when it subsequently contacts the grinding mechanism, effectively improving the grinding accuracy and quality of the screwdriver blank. Then, the drive unit 2 drives the positioning block 13 to move outwards away from the screwdriver blank, preventing the positioning block 13 from obstructing the screwdriver blank from moving closer to the grinding mechanism. After one end face of the screwdriver bit contacts the grinding mechanism, the grinding mechanism grinds that end face. After grinding is complete, the drive unit 1, in conjunction with the moving frame 2, then transports the screwdriver blank to... Figure 2 As shown in the initial state, the subsequent gripping mechanism, such as the robotic arm, can then transport the screwdriver blank to the next processing station for grinding the next end face; for example... Figure 2 As shown, since the screwdriver blank has three end faces that need to be ground, three sets of conveying mechanisms and edge grinding mechanisms are set in this embodiment. The three conveying mechanisms are arranged side by side along the length of the base, and the distance between adjacent conveying mechanisms is 35cm-55cm. Each conveying mechanism has an edge grinding mechanism at its tail end. After the screwdriver blank is ground at one station, it is conveyed to the next station through the moving frame to achieve continuous grinding. The three stations can work at the same time, which improves the efficiency of screwdriver grinding.

[0040] Specifically, such as Figure 3 and Figure 4As shown, the clamping component 4 includes a first clamping block 5 and a second clamping block 6; the first clamping block 5 and the second clamping block 6 are fixedly connected by a fixing rod; the first clamping block 5 has a slot that can match the screwdriver insert end; the second clamping block 6 is set in an arc shape that can match the cylindrical section of the screwdriver; after the slot of the first clamping block 5 is inserted into the insert end of the screwdriver blank, it can limit and fix the insert end; the second clamping block 6 is used to clamp the cylindrical section of the screwdriver blank, which can make the clamping component 4 clamp the screwdriver blank more stably; the second clamping block 6 is set in a semi-circular shape, and its inner diameter is equal to the outer diameter of the cylindrical section of the screwdriver blank; the support block 7 is installed on the outer circumferential wall of the second clamping block 6, and after the second clamping block 6 wraps around the cylindrical section of the screwdriver blank, it can rotate around the screwdriver axis.

[0041] Specifically, such as Figure 5 As shown, the slot is set to V-shape; considering that after the gripping mechanism such as the robotic arm places the screwdriver on the moving frame 2, the screwdriver blank is prone to rotate, and the insertion end is difficult to be in a state directly facing the slot. The front end of the V-shaped slot has a guiding function, so that the clamping block 5 can be connected to the insertion end of the screwdriver blank more smoothly.

[0042] Specifically, such as Figure 3 and Figure 4 As shown, the drive unit includes a guide rail 11 and a linear drive unit. The guide rail 11 is fixedly installed on the top of the base 1 and is slidably connected to a slider 9. The slider 9 is slidably connected to a slide rod 8, and the sliding direction of the slide rod 8 is perpendicular to that of the slider 9. The slide rod 8 is fixedly connected to the support block 7. The linear drive unit is used to drive the slide rod 8 to move closer to the screwdriver. The slider 9 can slide inside the guide rail 11, and the movement path of the slider 9 is parallel to the movement path of the moving frame 2. The slider 9 can be driven by a cylinder, a linear motor, a stepper motor, etc. The linear drive unit can drive the slide rod 8 to move the support block 7 and the clamping member 4 closer to the screwdriver blank, so that the clamping member 4 clamps the screwdriver blank.

[0043] Specifically, such as Figure 3 and Figure 4 As shown, the linear drive unit includes a drive rod 12, which is fixed to the base and is stepped. A slide rod 8 can move along the end face of the drive rod 12. A spring 10 for resetting is fitted onto the slide rod 8. (Reference) Figure 4 The drive rod 12 consists of two parallel horizontal bars and an inclined bar. The two horizontal bars are located on both sides of the inclined bar and are used to limit the movement trajectory of the slide bar 8. When the slider 19 drives the slide bar 8 from the left horizontal bar to the inclined bar area, the inclined bar generates a lateral thrust on the slide bar 8, causing the slide bar 8 to move towards the side closer to the screwdriver. The slide bar 8 can drive the support block 7 and the clamping part 4 to move towards the side closer to the screwdriver blank at the same time.

[0044] Specifically, such as Figure 6 and Figure 10As shown, the second drive unit includes a guide groove 24 and a telescopic rod 15. The guide groove 24 consists of a horizontal groove and an obtuse groove. A guide rod 14 is slidably fitted inside the guide groove 24. The guide rod 14 is fixedly connected to the positioning block 13. One end of the telescopic rod 15 is fixed to the positioning block 13, and the other end is fixed to a slider 16. The slider 16 is slidably fitted with a guide rail 18, which is fixed to the base 1. A spring 17 for resetting is installed inside the telescopic rod 15. A spring 19 for resetting the slider 16 is installed on the guide rail 18. After the screwdriver bit is inserted into the positioning groove, the screwdriver continues to move towards the grinding mechanism, which can drive the positioning block 13 to move synchronously. The positioning block 13 can drive the guide rod 14 to move within the guide groove 24. The telescopic rod 15 and the slider 16 move in a slidable manner. The guide rail 18 serves as a guide to prevent the positioning block 13 from rotating during movement, ensuring stable operation of the positioning block 13. When the guide rod 14 moves within the transverse groove of the guide slide 24, the two positioning blocks 13 are in a closed state, providing time for the locking unit to operate. After the locking unit completes the locking operation, the guide rod 14 can move outward along the inclined groove of the guide slide 24 without affecting the movement of the screwdriver blank towards the edge grinding mechanism. Although the second drive unit can be replaced by a cylinder, linear motor, etc., the second drive unit in this embodiment can utilize the thrust of the drive unit 1 driving the support block 7 to move the screwdriver blank towards the edge grinding mechanism, thereby driving the positioning block 13 to move outward. Furthermore, the outward movement of the positioning block 13 occurs during the movement of the screwdriver blank, resulting in better continuity of the grinding process.

[0045] Specifically, such as Figure 8 As shown, the locking unit includes a pressure block 20 and an electric telescopic component 21; the pressure block 20 is slidably connected to the support block 7; after the screwdriver bit is inserted into the positioning groove and the alignment is completed, the electric telescopic component 21 is used to drive the pressure block 20 to move closer to the clamping block 6; the pressure block 20 provides a stable pressing force to the clamping block 6, and the clamping block 6 and the support block 7 are kept relatively fixed by the pressing force and friction.

[0046] Specifically, such as Figure 9 As shown, the end of the pressure block 20 is set to be an arc shape that matches the outer wall of the clamping block 26; the end face of the pressure block 20 can be completely fitted with the outer wall of the clamping block 26, which can effectively improve the contact area and friction.

[0047] Specifically, such as Figure 2 As shown, the edge grinding mechanism includes a grinding disc 22 and a motor 23; the grinding disc 22 is fixedly connected to the output shaft of the motor 23; the motor 23 is used to drive the grinding disc 22 to rotate and grind the end face of the screwdriver blank bit.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station synchronous grinding screwdriver bit edge grinding machine, comprising a base (1), wherein multiple conveying mechanisms are provided on the base (1); each conveying mechanism is provided with an edge grinding mechanism at its tail end; characterized in that: The conveying mechanism includes: The movable frame (2) is slidably mounted on top of the base (1) and is used to transport screwdrivers; Two support blocks (7) are symmetrically arranged on both sides of the moving frame (2) along the conveying direction of the moving frame (2) and located on both sides of the screwdriver moving path; each support block (7) is rotatably connected to a clamping member (4) for fixing the screwdriver; after the clamping member (4) clamps the screwdriver, it can rotate around the screwdriver axis on the support block (7); Two positioning blocks (13) are arranged symmetrically about the moving frame (2), and positioning grooves are provided on the inner side of each block. The inner contour of the positioning groove matches the outer contour of the screwdriver bit. Two drive units are used to drive two support blocks (7) to move the clamping parts (4) closer to the screwdriver, so that the clamping parts (4) clamp the screwdriver, and drive the support blocks (7) and the clamping parts (4) to move synchronously with the moving frame (2) and the screwdriver. Two drive units are used to drive the positioning blocks (13) to move away from the screwdriver after the two positioning blocks (13) have completed positioning the screwdriver; Two locking units are respectively set on two support blocks (7) and are used to fix the support blocks (7) and the clamping parts (4) relative to each other after the screwdriver has completed positioning.

2. The screwdriver bit grinding machine with multi-station synchronous grinding according to claim 1, characterized in that: The clamping member (4) includes clamping block one (5) and clamping block two (6); clamping block one (5) and clamping block two (6) are fixedly connected; clamping block one (5) has a slot that can match the screwdriver mounting end; clamping block two (6) is set to be an arc shape that can match the cylindrical section of the screwdriver.

3. The screwdriver head grinding machine for multi-station synchronous grinding according to claim 2, characterized in that: The slot is configured in a V-shape.

4. The screwdriver bit grinding machine with multi-station synchronous grinding according to claim 1, characterized in that: The drive unit includes a guide rail (11) and a linear drive unit; the guide rail (11) is fixedly installed on the top of the base (1) and is slidably connected to a slider (9), the slider (9) is slidably connected to a slide rod (8), the slide rod (8) is perpendicular to the sliding direction of the slider (9); the slide rod (8) is fixedly connected to a support block (7); the linear drive unit is used to drive the slide rod (8) to move closer to the screwdriver.

5. A screwdriver bit grinding machine for multi-station synchronous grinding according to claim 4, characterized in that: The linear drive unit includes a drive rod (12), which is fixed to the base and is set in a stepped shape. The slide rod (8) can move along the end face of the drive rod (12). A spring (10) for resetting is fitted on the slide rod (8).

6. A screwdriver bit grinding machine for multi-station synchronous grinding according to claim 1, characterized in that: The second drive unit includes a guide groove (24) and a telescopic rod (15); the guide groove (24) is composed of a horizontal groove and an obtuse angle between the horizontal groove and the obtuse groove; a guide rod (14) is slidably fitted inside the guide groove (24); the guide rod (14) is fixedly connected to the positioning block (13); one end of the telescopic rod (15) is fixed to the positioning block (13), and the other end is fixed to a slider (16); the slider (16) is slidably fitted to a guide rail (18), and the guide rail (18) is fixed to the base (1); a spring (17) for resetting is installed inside the telescopic rod (15); a spring (19) for resetting the slider (16) is installed on the guide rail (18).

7. A screwdriver tip grinding machine for multi-station synchronous grinding according to claim 2, characterized in that: The locking unit includes a pressure block (20) and an electric telescopic component (21); the pressure block (20) is slidably connected to the support block (7); the electric telescopic component (21) is used to drive the pressure block (20) to move closer to the clamping block (6).

8. A screwdriver bit grinding machine for multi-station synchronous grinding according to claim 7, characterized in that: The end of the pressure block (20) is set to be an arc shape that matches the outer wall of the clamping block (6).

9. A screwdriver tip grinding machine for multi-station synchronous grinding according to claim 7, characterized in that: The edge grinding mechanism includes a grinding disc (22) and a motor (23); the grinding disc (22) is fixedly connected to the output shaft of the motor (23).

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