A device for machining a cross slot of a screw

Abstract

This utility model relates to the field of screw processing technology, specifically to a processing device for screw cross slots. It includes a base plate with multiple support legs fixed to it. A hopper is elastically connected to each support leg, and a first vibrator is fixed inside the hopper. A feeding groove is formed on the lower wall of the hopper. A guide rod is positioned below the hopper, and a stepped groove is formed along its length on the guide rod. The left end of the stepped groove extends through the left end of the guide rod. The upper part of the stepped groove is a large groove, and the lower part is a small groove. Only a single row of screws is allowed to be arranged in the stepped groove. The upper end of the guide rod contacts the lower end of the hopper, and the stepped groove communicates with the feeding groove. Sealing plates are fixed to both sides of the guide rod, with the upper end of the sealing plates flush with the upper end of the guide rod. The sealing plates and the guide rod obstruct the feeding groove. A stamping assembly is provided on the base plate on the left side of the hopper. Because the left end of the device is tilted downwards, the screws in the stepped groove can automatically move to the left under the action of the second vibrator, enabling automatic feeding.

Description

Technical Field

[0001] This utility model relates to the field of screw processing technology, specifically to a processing device for screw cross grooves. Background Technology

[0002] After the screw's threads are machined, a groove is usually made at the top of the screw head. Some grooves are slotted, some are Phillips head, and others are other shapes, to facilitate disassembly with a screwdriver. There are various methods for machining the groove. When machining a Phillips head groove on a screw, a slotted groove is usually machined first, then the screw is rotated 90 degrees and another slotted groove is machined. The two intersecting slotted grooves form a Phillips head groove. This machining method is generally suitable for larger screws; smaller screws are usually machined using a stamping method.

[0003] Patent document CN205703619U discloses a processing device for Phillips head grooves on screws. During processing, the screw is first poured into a feeding hopper. A switch is turned on, and a stacking component inserts the sharp end of the screw into a cylinder. A pulley transports the screw until it reaches directly above a grinding wheel, at which point it stops. A drive motor then rotates the grinding wheel to groove the screw head. A stepper motor rotates to change the grinding direction of the wheel. When the screw reaches one side of a baffle, a miniature electric telescopic rod extends, pushing the screw out of the cylinder. Upon hitting the baffle, the screw falls into a container. This processing method is suitable for processing larger screws.

[0004] Patent document CN116352005A discloses an automatic machining device for cross-shaped grooves in screw production. When machining the cross-shaped grooves of screws, a second motor is first started to drive the positive and negative lead screws to rotate. Under the sliding limit of the sliding block by the limiting groove, the upper and lower sliders cooperate with the positive and negative lead screws through transmission holes, adjusting the distance between the first and second mounting plates. With the cross-shaped pressure block aligned with the column, the screw can be accurately pressed into the cross-shaped groove. Then, the second motor is used to reset, and before resetting, a cylinder is used to push the support plate upwards, allowing the machined screw to pop out of the positioning hole. Using a motor and positive and negative lead screws as driving components to press the cross-shaped grooves of screws results in low efficiency. Utility Model Content

[0005] The main purpose of this utility model is to provide a screw cross slot processing device that can improve processing efficiency, has simple equipment and low maintenance cost.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A screw cross-groove processing device, with its left end tilted downwards, includes a base plate, multiple support legs fixed on the base plate, a hopper elastically connected to the support legs, a first vibrator fixed inside the hopper, a feeding groove on the lower wall of the hopper, a guide rod below the hopper, a stepped groove along the length of the guide rod, the left end of the stepped groove penetrating the left end of the guide rod, the length of the threaded portion of the screw being greater than the height of the guide rod, the upper part of the stepped groove being a large groove, the lower part of the stepped groove being a small groove, only a single row of screws is allowed to be arranged in the stepped groove, the upper end of the guide rod contacting the lower end of the hopper, the stepped groove communicating with the feeding groove, sealing plates fixed on both sides of the guide rod, the upper end of the sealing plates being flush with the upper end of the guide rod, the sealing plates and the guide rod obstructing the feeding groove, and a stamping assembly provided on the base plate on the left side of the hopper.

[0008] Specifically, a fixing plate is fixed on the hopper, the fixing plate passes through the hopper, a spring is fixed at the lower end of the fixing plate on the outside of the hopper, the support leg is connected to the fixing plate by the spring, and the first vibrator is fixed on the fixing plate inside the hopper.

[0009] Specifically, a second vibrator is fixed to the outside of the slide bar.

[0010] Specifically, the stamping assembly includes a top rod located above the slide bar, the top rod being fixedly connected to the base plate, a punch corresponding to the stepped groove being fixed at the lower end of the top rod, a top plate being provided below the slide bar, the top plate being connected to the base plate via a vertical first cylinder, two clamping assemblies being provided on the top plate, the two clamping assemblies being symmetrically arranged around the axis according to the punch, a photoelectric sensor corresponding to the clamping assembly being fixed at the lower end of the slide bar, the solenoid valve of the first cylinder, the photoelectric sensor, and the controller being electrically connected, and the solenoid valve of the first cylinder being connected to an air source.

[0011] Specifically, the two clamping assemblies are symmetrically arranged at the front and rear of the punch along the axis. Each clamping assembly includes an arc-shaped plate, a second cylinder is fixed on the top plate, the telescopic end of the second cylinder is fixedly connected to the arc-shaped plate, the solenoid valve, photoelectric sensor and controller of the second cylinder are electrically connected, and the solenoid valve of the second cylinder is connected to the air source.

[0012] Specifically, the curved plate has guide slopes processed at both ends.

[0013] Specifically, a third cylinder is fixed to the outside of the slide bar. The axial direction of the third cylinder is parallel to the length direction of the slide bar. A support plate is slidably installed at the lower end of the slide bar on the right side of the stepped groove. The length of the support plate is greater than the length of the feeding trough. The upper end of the support plate contacts the lower end of the slide bar. The telescopic end of the third cylinder is fixedly connected to the support plate through a connecting piece. The solenoid valve of the third cylinder is electrically connected to the controller and to the air source.

[0014] Specifically, the photoelectric sensor is located on the left side of the arc plate's axis. After the photoelectric sensor detects the screw, the axis of the screw detected by the photoelectric sensor is in the same longitudinal plane as the axis of the arc plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. After the first vibrator is started, the screw can automatically enter the stepped groove. The screw head is located in the large groove of the stepped groove, and the screw thread is located in the small groove of the stepped groove. Since the left end of this device is tilted downward, the screw in the stepped groove can automatically move to the left under the action of the second vibrator. This device can realize automatic feeding.

[0017] 2. After the photoelectric sensor detects the screw, the clamping assembly clamps the screw, and then the first cylinder moves the screw upward through the top plate. The punch impacts the screw's nut to achieve the processing of the cross groove. The processing efficiency is high, the screw has good stability when moving upward, and the processing quality of the cross groove is high.

[0018] 3. The screws in the hopper will squeeze the screws in the stepped groove, resulting in low efficiency of the screws in the stepped groove below the hopper moving to the left. Activating the third cylinder will move the pallet, which can push the screws in the stepped groove to the left, thereby increasing the speed of the screws moving to the left in the stepped groove below the hopper and thus improving the processing efficiency.

[0019] 4. The length of the pallet is greater than the length of the feed chute. As the pallet pushes the screws in the stepped chute to the left, it can block the lower end of the stepped chute, preventing the lower end of the threaded part of the screws in the hopper from moving below the slide bar and affecting the return stroke of the pallet. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device.

[0021] Figure 2 This is a top view of the device.

[0022] Figure 3 for Figure 2 Sectional view along the AA direction.

[0023] Figure 4 for Figure 2 Sectional view along the BB direction.

[0024] Figure 5 This is a schematic diagram of the guide ramp on the curved plate.

[0025] The components in the attached diagram are named as follows: 1. Hopper, 2. Support leg, 3. Fixing plate, 4. Spring, 5. First vibrator, 6. Slide rod, 7. Stepped groove, 8. Second vibrator, 9. Base plate, 10. Top rod, 11. Punch, 12. First cylinder, 13. Top plate, 14. Second cylinder, 15. Arc plate, 151. Guide slope, 16. Photoelectric sensor, 17. Support plate, 18. Connecting piece, 19. Third cylinder, 20. Sealing plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1: Refer to Figures 1-5 As shown, a screw cross groove processing device has its left end tilted downward.

[0028] It includes a base plate 9, on which multiple support legs 2 are fixed, and a hopper 1 is elastically connected to the support legs 2. A first vibrator 5 is fixed inside the hopper 1.

[0029] Specifically, a fixing plate 3 is fixed on the hopper 1, the fixing plate 3 penetrates the hopper 1, a spring 4 is fixed at the lower end of the fixing plate 3 on the outer side of the hopper 1, the support leg 2 is connected to the fixing plate 3 through the spring 4, and the first vibrator 5 is fixed on the fixing plate 3 inside the hopper 1.

[0030] A feeding trough is provided on the lower wall of the hopper 1, and a guide rod 6 is provided below the hopper 1. A second vibrator 8 is fixed to the outside of the guide rod 6. A stepped groove 7 is provided along the length of the guide rod 6, and the left end of the stepped groove 7 passes through the left end of the guide rod 6. The length of the threaded part of the screw is greater than the height of the guide rod 6. The upper part of the stepped groove 7 is a large groove, and the lower part of the stepped groove 7 is a small groove. Only a single row of screws is allowed to be arranged in the stepped groove 7.

[0031] The upper end of the chute 6 contacts the lower end of the hopper 1, the stepped groove 7 is connected to the discharge chute, and sealing plates 20 are fixed on both sides of the chute 6. The upper end of the sealing plate 20 is flush with the upper end of the chute 6, and the sealing plate 20 and the chute 6 cover the discharge chute.

[0032] By setting the sealing plate 20, the area of ​​the feed chute connected to the stepped groove 7 can be guaranteed, improving the efficiency of screws correctly entering the stepped groove 7. At the same time, when the hopper 1 vibrates, the sealing plate 20 can prevent screws in the hopper 1 from leaking from the feed chute to the outside of the chute 6.

[0033] The screw is placed into hopper 1, and then the first vibrator 5 is activated, causing hopper 1 and the screw inside to vibrate. Since only a single row of screws is allowed in the stepped groove 7, the screw head is located in the large groove of the stepped groove 7, and the screw thread is located in the small groove of the stepped groove 7. Because the length of the screw thread is greater than the height of the slide bar 6, after the screw is correctly placed into the stepped groove 7, the lower end of the screw thread protrudes below the slide bar 6.

[0034] Because the left end of the device is tilted downwards, after the second vibrator 8 is started, the screw in the stepped groove 7 can move continuously to the left.

[0035] When a nut with a screw is located in the large groove of the stepped groove 7, but the screw thread is pointing upwards, the screw is in an inverted state. Since the upper end of the chute 6 is in contact with the lower end of the hopper 1, the inverted screw will not be discharged from the hopper 1.

[0036] A stamping assembly is installed on the bottom plate 9 on the left side of the hopper 1.

[0037] The stamping assembly includes a top rod 10 located above the slide bar 6. The top rod 10 is fixedly connected to the base plate 9, and a punch 11 corresponding to the stepped groove 7 is fixed at the lower end of the top rod 10.

[0038] A top plate 13 is provided below the slide bar 6, and the top plate 13 is connected to the bottom plate 9 through a vertical first cylinder 12.

[0039] Two clamping assemblies are provided on the top plate 13, and the two clamping assemblies are symmetrically arranged around the axis according to the punch 11.

[0040] A photoelectric sensor 16 corresponding to the clamping assembly is fixed at the lower end of the slide bar 6. The photoelectric sensor 16 is located on the left side of the axis of the arc plate 15.

[0041] The solenoid valve, photoelectric sensor 16, and controller of the first cylinder 12 are electrically connected, and the solenoid valve of the first cylinder 12 is connected to the air source.

[0042] The two clamping assemblies are symmetrically arranged at the front and rear of the axis according to the punch 11. The clamping assembly includes an arc-shaped plate 15, and guide slopes 151 are machined at both ends of the arc-shaped plate 15. A second cylinder 14 is fixed on the top plate 13. The telescopic end of the second cylinder 14 is fixedly connected to the arc-shaped plate 15. The solenoid valve, photoelectric sensor 16 and controller of the second cylinder 14 are electrically connected. The solenoid valve of the second cylinder 14 is connected to the air source.

[0043] As the screw moves to the left within the stepped groove 7, the photoelectric sensor 16 detects the screw and sends a signal to the controller. The controller then controls the solenoid valve of the second cylinder 14, causing both second cylinders 14 to operate simultaneously and clamp the threaded rod of the screw with two arc-shaped plates 15. The controller then activates the first cylinder 12, which drives the top plate 13, the two clamping components, and the screw to move upward. After the screw moves upward, the punch 11 impacts the screw's nut, thereby achieving the processing of the cross groove.

[0044] After the cross groove is processed, the first cylinder 12 drives the top plate 13, the two clamping components and the screw to move downward. Then the second cylinder 14 returns and releases the screw. The screw that has been processed in the cross groove continues to move to the left in the stepped groove 7 until the screw is discharged from the left end of the stepped groove 7.

[0045] In this embodiment, since the photoelectric sensor 16 corresponds to the clamping assembly and is located on the left side of the axis of the arc plate 15, when the photoelectric sensor 16 senses the screw, the axis of the screw sensed by the photoelectric sensor 16 and the axis of the arc plate 15 are in the same longitudinal plane. After the two second cylinders 14 are started, it can ensure that the two arc plates 15 can effectively clamp the screw.

[0046] In this embodiment, since both ends of the arc plate 15 are machined with guide slopes 151, when the two arc plates 15 clamp the screw in the middle, the guide slopes 151 can push the screw on the left and the screw on the right, so that the arc plates 15 can effectively clamp the screw in the middle.

[0047] Because the distance between the middle screw and the left and right screws is increased, the middle screw can avoid dragging the left or right screws upward when it moves upward, ensuring that the left and right screws can move smoothly from right to left within the stepped groove 7.

[0048] Example 2: Based on Example 1, referring to... Figure 1 and Figure 4 As shown, a third cylinder 19 is fixed on the outside of the slide bar 6. The axial direction of the third cylinder 19 is parallel to the length direction of the slide bar 6. A support plate 17 is slidably installed at the lower end of the slide bar 6 on the right side of the stepped groove 7. The length of the support plate 17 is greater than the length of the feeding trough. The upper end of the support plate 17 contacts the lower end of the slide bar 6. The telescopic end of the third cylinder 19 is fixedly connected to the support plate 17 through a connecting piece 18. The solenoid valve of the third cylinder 19 is electrically connected to the controller and to the air source.

[0049] The screws in the hopper 1 will squeeze the screws in the stepped groove 7, resulting in low efficiency of the screws in the stepped groove 7 below the hopper 1 moving to the left. Activating the third cylinder 19 causes the pallet 17 to move, which can push the screws in the stepped groove 7 to the left, thereby increasing the speed at which the screws in the stepped groove 7 below the hopper 1 move to the left and thus improving the processing efficiency.

[0050] The length of the pallet 17 is greater than the length of the feed chute. As the pallet 17 pushes the screw in the stepped groove 7 to the left, it can block the lower end of the stepped groove 7, thus preventing the lower end of the threaded part of the screw in the hopper 1 from moving below the slide bar 6 and affecting the return stroke of the pallet 17.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A processing device for a screw cross groove, the left end of which is inclined downward, comprising a base plate (9), a plurality of support legs (2) fixed on the base plate (9), a hopper (1) elastically connected to the support legs (2), and a first vibrator (5) fixed inside the hopper (1), characterized in that, A feeding trough is provided on the lower wall of the hopper (1). A guide rod (6) is provided below the hopper (1). A stepped groove (7) is provided along the length of the guide rod (6). The left end of the stepped groove (7) passes through the left end of the guide rod (6). The length of the threaded rod of the screw is greater than the height of the guide rod (6). The upper part of the stepped groove (7) is a large groove, and the lower part of the stepped groove (7) is a small groove. Only a single row of screws is allowed in the stepped groove (7). The upper end of the guide rod (6) contacts the lower end of the hopper (1). The stepped groove (7) is connected to the feeding trough. Both sides of the guide rod (6) are fixed with sealing plates (20). The upper end of the sealing plates (20) is flush with the upper end of the guide rod (6). The sealing plates (20) and the guide rod (6) cover the feeding trough. A stamping assembly is provided on the bottom plate (9) on the left side of the hopper (1).

2. The screw cross-groove processing device according to claim 1, characterized in that, A fixing plate (3) is fixed on the hopper (1), the fixing plate (3) penetrates the hopper (1), a spring (4) is fixed at the lower end of the fixing plate (3) on the outside of the hopper (1), the support leg (2) is connected to the fixing plate (3) through the spring (4), and the first vibrator (5) is fixed on the fixing plate (3) inside the hopper (1).

3. The screw cross-groove processing device according to claim 1, characterized in that, A second vibrator (8) is fixed to the outside of the slide bar (6).

4. The screw cross-groove processing device according to claim 1, characterized in that, The stamping assembly includes a top rod (10) located above the slide rod (6), the top rod (10) is fixedly connected to the bottom plate (9), the lower end of the top rod (10) is fixed with a punch (11) corresponding to the stepped groove (7), a top plate (13) is provided below the slide rod (6), the top plate (13) and the bottom plate (9) are connected by a vertical first cylinder (12), two clamping assemblies are provided on the top plate (13), the two clamping assemblies are symmetrically arranged on the axis according to the punch (11), the lower end of the slide rod (6) is fixed with a photoelectric sensor (16) corresponding to the clamping assembly, the solenoid valve of the first cylinder (12), the photoelectric sensor (16) and the controller are electrically connected, and the solenoid valve of the first cylinder (12) is connected to the air source.

5. The screw cross-groove processing device according to claim 4, characterized in that, The two clamping assemblies are symmetrically arranged at the front and rear of the axis according to the punch (11). The clamping assembly includes an arc plate (15) and a second cylinder (14) is fixed on the top plate (13). The telescopic end of the second cylinder (14) is fixedly connected to the arc plate (15). The solenoid valve, photoelectric sensor (16) and controller of the second cylinder (14) are electrically connected. The solenoid valve of the second cylinder (14) is connected to the air source.

6. The screw cross-groove processing device according to claim 5, characterized in that, The arc-shaped plate (15) has guide slopes (151) processed at both its left and right ends.

7. The screw cross-groove processing device according to claim 1, characterized in that, A third cylinder (19) is fixed on the outside of the slide bar (6). The axial direction of the third cylinder (19) is parallel to the length direction of the slide bar (6). A support plate (17) is slidably installed at the lower end of the slide bar (6) on the right side of the stepped groove (7). The length of the support plate (17) is greater than the length of the feeding groove. The upper end of the support plate (17) contacts the lower end of the slide bar (6). The telescopic end of the third cylinder (19) is fixedly connected to the support plate (17) through a connecting piece (18). The solenoid valve of the third cylinder (19) is electrically connected to the controller. The solenoid valve of the third cylinder (19) is connected to the air source.

8. The screw cross-groove processing device according to claim 5, characterized in that, The photoelectric sensor (16) is located on the left side of the axis of the arc plate (15). After the photoelectric sensor (16) senses the screw, the axis of the screw sensed by the photoelectric sensor (16) is in the same longitudinal plane as the axis of the arc plate (15).

Images