Burr and flash impact hammer

Abstract

The utility model discloses a burr and flash impact hammer. Comprising a main shell, a removing assembly and a power assembly, wherein the removing assembly is in sliding connection with the main shell, the bottom of the removing assembly extends out of the main shell and is used for impacting and removing burrs and flashes; the power assembly is arranged on one side of the main shell and is used for providing a power source; the transmission assembly is installed in the main shell and is in linkage with the power assembly; and the impact assembly is arranged above the removal assembly and is matched with the transmission assembly to drive the removal assembly to impact downwards. The pounding head can automatically remove burrs and flashes of workpieces by pushing and pressing the piston trigger, operation is easy, the efficiency of removing the burrs and the flashes is high, scratches of the workpieces caused by manual operation of workers can be avoided, and the quality of the workpieces with the burrs and the flashes removed can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of die casting post-processing technology, and particularly relates to a burr and flash impact hammer. Background Technology

[0002] In die casting production, burrs and flash are easily generated at the openings of mold-type workpieces after long-term use and wear. These burrs and flash affect the quality of the finished product after subsequent machining. Therefore, in actual production, finishing personnel are arranged to remove the burrs and flash from the molds. The common method for removing burrs and flash in the existing technology is for workers to remove them manually with needle-nose pliers and files. This method is not only inefficient, but also prone to scratching and bumping the mold. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a burr and flash removal impact hammer that has high efficiency in removing burrs and flash without damaging the mold.

[0004] Technical solution: The present invention discloses a burr and flash impact hammer, comprising a main housing, a removal component slidably connected to the main housing and extending to the outside of the main housing for impacting and removing burrs and flash, a power component disposed on one side of the main housing for providing a power source, a transmission component installed inside the main housing and linked with the power component, and an impact component disposed above the removal component and cooperating with the transmission component to drive the removal component to impact downward.

[0005] Furthermore, the removal assembly includes an impact hammer body, an inner limiting plate fixedly installed on the top of the impact hammer body and slidably connected to the inside of the main housing, and a pounding head detachably connected to the impact hammer body and located below the main housing.

[0006] Furthermore, an outer limiting plate is fixedly connected to the outer periphery of the impact hammer, and the outer limiting plate is located between the main housing and the pounding head.

[0007] Furthermore, the power assembly includes a piston trigger disposed on one side of the main housing, a connecting rod slidably connected to the inside of the main housing and extending one end to the outside of the main housing and fixedly connected to the piston trigger, a guide rod slidably connected to the inside of the main housing and extending one end to the outside of the main housing and fixedly connected to the piston trigger, a first spring sleeved on the outer periphery of the guide rod and fixedly connected between the piston trigger and the main housing, a gear plate slidably connected to the inside of the main housing and extending one end to the outside of the main housing and fixedly connected to the piston trigger, and a power gear rotatably installed inside the main housing and meshing with the gear plate.

[0008] Furthermore, a limiting snap ring is fixedly connected to the connecting rod to prevent the connecting rod from completely detaching from the main housing.

[0009] Furthermore, the transmission assembly includes a concentric gear coaxially connected to the power gear, a ratchet concentrically sleeved on the outer circumference of the concentric gear and rotatably connected to the main housing, a stop block fixedly connected to the inner ring wall of the ratchet, a first ratchet rotatably installed inside the main housing and matched with the concentric gear, and a spring that abuts against the first ratchet and engages in the tooth groove of the concentric gear. After the first ratchet engages in the concentric gear, it drives the ratchet to rotate in one direction by squeezing the stop block. The ratchet consists of a ratchet-toothed part and a ratchetless part.

[0010] Furthermore, there is a gap between the outer teeth of the concentric gear and the stop block.

[0011] Furthermore, the impact component includes an impact post slidably installed inside the main housing and provided with a second ratchet, a hammer head fixedly connected to the bottom end of the impact post and in contact with the inner limiting plate, and a second spring fixedly connected to the top end of the impact post. The other end of the second spring is fixedly connected to the inner wall of the main housing. The impact post is engaged with the ratchet portion of the ratchet wheel through the second ratchet.

[0012] Furthermore, a circular plate is fixedly connected to the top of the impact column, and a second sliding guide groove adapted to the circular plate is provided inside the main housing.

[0013] Furthermore, a main cover plate is installed on one side of the main housing, and a top cover plate is installed on the top of the main housing.

[0014] Beneficial Effects: Compared with the prior art, this utility model has the following advantages: This utility model automatically removes burrs and flash from the workpiece by pressing the piston trigger. This is not only simple to operate and highly efficient at removing burrs and flash, but also avoids scratches and abrasions caused by manual operation, thus ensuring the quality of the workpiece after burr and flash removal. During the burr and flash removal process, the operator does not directly contact the workpiece; they only need to place the main housing against the workpiece. This avoids accidental hand injuries due to improper operation and improves the safety of the operator during burr and flash removal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view of the present invention when the main cover plate is removed;

[0017] Figure 3 For the present utility model Figure 2 Sectional view at point AA;

[0018] Figure 4 This is a structural diagram of the present invention when the main cover plate is removed;

[0019] Figure 5 This is a top view of the present invention;

[0020] Figure 6 For the present utility model Figure 5 Sectional view at point BB;

[0021] Figure 7 For the present utility model Figure 5 Sectional view at CC;

[0022] Figure 8 For the present utility model Figure 7 A magnified view of the ratchet mechanism. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0024] This utility model discloses a burr and flash impact hammer, such as Figure 1 As shown, the device includes a main housing 1, a deburring component, a power component, a transmission component, and an impact component. The deburring component is slidably connected to the main housing 1 and extends its bottom to the outside of the main housing 1 for impacting and removing burrs and flash. The power component is located on one side of the main housing 1 to provide a power source. The transmission component is installed inside the main housing 1 and is linked to the power component. The impact component is located above the deburring component and cooperates with the transmission component to drive the deburring component to impact downwards. In use, the main housing 1 is held and the deburring component is pressed against the burrs and flash of the workpiece. Then, the power component is triggered. The power component transmits power to the impact component through the transmission component, causing the deburring component to impact downwards and remove the burrs and flash.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the removal assembly includes an impact hammer 2, an inner limiting plate 3, an outer limiting plate 4, and a pounding head 5. The inner limiting plate 3 is fixedly installed on the top of the impact hammer 2. The main housing 1 has a first sliding guide groove 22 that matches the inner limiting plate 3. The inner limiting plate 3 and the first sliding guide groove 22 are provided to allow the inner limiting plate 3 to slide along the first sliding guide groove 22, improving the stability of the impact hammer 2 when the inner limiting plate 3 drives it to move. On the other hand, it can prevent the impact hammer 2 from slipping out of the main housing 1. The outer limiting plate 4... Position plate 4 is fixedly installed on the outer periphery of impact hammer body 2, and outer limiting plate 4 is located below main housing 1. Outer limiting plate 4 is used to limit the maximum length of impact hammer body 2 extending into main housing 1. Hammer head 5 is detachably connected to impact hammer body 2, and hammer head 5 is located below outer limiting plate 4. Hammer head 5 is detachably connected to impact hammer body 2, which facilitates the replacement of matching hammer head 5 according to the shape of different workpieces during actual use. The detachable connection method between hammer head 5 and impact hammer body 2 is preferably bolt connection, but not limited to bolt connection.

[0026] like Figures 1 to 6 As shown, the power assembly includes a piston trigger 6, a connecting rod 7, a guide rod 8, a first spring 9, a toothed plate 10, and a power gear 11. The piston trigger 6 is located on one side of the main housing 1. The connecting rod 7 is slidably connected to the inside of the main housing 1 and extends to the outside of the main housing 1 and is fixedly connected to the piston trigger 6. Preferably, there are four connecting rods 7, and the four connecting rods 7 are arranged in a rectangular array, which helps to improve the stability of the piston trigger 6 during movement. At least one connecting rod 7 is fixedly connected to a limit snap ring 12, which can prevent the connecting rod 7 from completely detaching from the main housing 1. A mounting hole communicating with the inside of the main housing 1 is provided on one side. The mounting hole facilitates the installation of the limit snap ring 12 during the formation of the burr and flash impact hammer, and a piston trigger plug 27 is installed at the mounting hole. The guide rod 8 is slidably connected to the inside of the main housing 1, and one end extends to the outside of the main housing 1 and is fixedly connected to the piston trigger 6. The length of the guide rod 8 is longer than or equal to the length of the connecting rod 17 to prevent the guide rod 8 from completely sliding out of the inside of the main housing 1. The first spring 9 is sleeved on the outer periphery of the guide rod 8, and the two ends of the first spring 9 are fixedly connected to the piston trigger 6 and the main housing 1, respectively. Preferably, two guide rods 8 are provided, and the two guide rods 8 are symmetrically arranged. The guide rod 8 can play a guiding role during the extension and retraction of the first spring 9. The toothed plate 10 is slidably connected to the inside of the main housing 1, and one end extends to the outside of the main housing 1 and is fixedly connected to the piston trigger 6. The length of the toothed plate 10 is longer than or equal to the length of the connecting rod 17 to prevent the toothed plate 10 from completely sliding out of the inside of the main housing 1. The power gear 11 is rotatably installed inside the main housing 1 and meshes with the toothed plate 10.

[0027] like Figure 4 , Figure 7 and Figure 8As shown, the transmission assembly includes a concentric gear 13, a ratchet 14, a stop block 15, a first ratchet 16, and a spring 17. The concentric gear 13 is rotatably mounted inside the main housing 1, and the main housing 1 is coaxially connected to the power gear 11. The ratchet 14 is rotatably mounted inside the main housing 1, and the ratchet 14 is concentrically sleeved on the outer circumference of the concentric gear 13. The ratchet 14 consists of a ratchet-toothed part and a non-ratchet-toothed part. The stop block 15 is fixedly connected to the inner ring wall of the ratchet 14, and there is a gap between the outer teeth of the concentric gear 13 and the stop block 15. The first ratchet 16 is rotatably mounted inside the main housing 1 and matches the concentric gear 13. The spring 17 is mounted inside the main housing 1, and the first ratchet 16 can be engaged into the tooth groove of the concentric gear 13 under the action of the spring 17. The first ratchet 16, the spring 17, and the stop block 15 cooperate to realize the unidirectional rotation of the ratchet 14. When the drive gear 11 synchronously drives the concentric gear 13 to rotate clockwise, the spring 17 presses on the first ratchet 16. The force of the spring 17 causes the first ratchet 16 to be pressed into the tooth groove of the concentric gear 13. When the concentric gear 13 rotates, it drives the first ratchet 16 to rotate. The stop block 15 abuts against one side of the first ratchet 16, so that when the first ratchet 16 rotates, it squeezes the stop block 15, which in turn drives the ratchet 14 to rotate clockwise. When the drive gear 11 drives the concentric gear 13 to rotate counterclockwise, the concentric gear 13 drives the first ratchet 16 to rotate in the opposite direction. At this time, the stop block 15 will not block the first ratchet 16, and the ratchet 14 will no longer rotate.

[0028] like Figure 2 and Figure 4 As shown, the impact assembly includes an impact post 19, a hammer head 20, and a second spring 21. The impact post 19 has a second ratchet tooth 18 that meshes with the ratchet 14 on the side near the ratchet 14. The impact post 19 is slidably installed inside the main housing 1. A circular plate 24 is fixedly connected to the top of the impact post 19. The main housing 1 has a second sliding guide groove 23 that communicates with the first sliding guide groove 22. The circular plate 24 is slidably connected to the second sliding guide groove 23. The arrangement of the circular plate 24 and the second sliding guide groove 23 helps to improve the stability of the impact post 19 during movement. The hammer head 20 is fixedly connected to the bottom of the impact post 19 and contacts the inner limiting plate 3. The second spring 21 is fixedly connected to the top of the impact post 19, and the other end of the second spring 21 is fixedly connected to the inner wall of the main housing 1.

[0029] A main cover plate 25 is installed on one side of the main housing 1, and a top cover plate 26 is installed on the top of the main housing 1. Preferably, both the main cover plate 25 and the top cover plate 26 are detachably connected to the main housing 1, which facilitates the subsequent disassembly of the main cover plate 25 and the top cover plate 26 to inspect the internal components of the main housing 1.

[0030] In use, first select the appropriate pounding head 5 according to the workpiece to be processed and install it on the impact hammer body 2; then the operator holds the main housing 1, puts the pounding head 5 into the hole of the workpiece with burrs and flash, and presses the pounding head 5 against the flash. The operator applies pressure so that the top of the impact hammer body 2 extends into the main housing 1 until the outer limit plate 4 touches the bottom of the main housing 1. At this time, it is in the ready state. Then, the piston trigger 6 is pushed towards the main housing 1. The piston trigger 6 drives the connecting rod 7, guide rod 8, and gear plate 10 to move synchronously. The first spring 9 is compressed, and gear 10 drives the power gear 11 to rotate clockwise. The power gear 11 synchronously drives the concentric gear 13 to rotate clockwise. At this time, the spring 17 presses on the first ratchet 16. The force of the spring 17 causes the first ratchet 16 to be pressed into the tooth groove of the concentric gear 13. When the concentric gear 13 rotates, it drives the first ratchet 16 to rotate. The stop block 15 abuts against one side of the first ratchet 16, so that when the first ratchet 16 rotates, it squeezes the stop block 15, thereby causing the stop block 16 to rotate. 5 drives the ratchet 14 to rotate clockwise, and the ratchet 14 engages with the second ratchet 18, causing the impact column 19 to move upward with the hammer head 20 and squeeze the second spring 21. The hammer head 20 moves upward, creating an impact distance between the hammer head 20 and the impact hammer body 2. When the non-ratted part of the ratchet 14 rotates to one side of the impact column 19, the second ratchet 18 disengages from the ratchet 14, and the impact column 19 moves downward under the action of the second spring 21, causing the hammer head 20 to quickly impact the inner limiting plate 3. This, in turn, causes the inner limiting plate 3 to move downward quickly with the impact hammer body 2 and the pounding head 5, smashing off the burrs and flash in the workpiece hole. Then release the piston trigger 6, thus removing the pressure applied to it. Under the action of the first spring 9, the piston trigger 6 moves away from the main housing 1. The toothed plate 10 moves synchronously with the piston trigger 6, causing the toothed plate 10 to drive the power gear 11 to rotate counterclockwise. The power gear 11 then drives the concentric gear 13 to rotate counterclockwise synchronously. The concentric gear 13 drives the first ratchet 16 to rotate in the opposite direction. At this time, the stop block 15 will not obstruct the first ratchet 16, and the ratchet 14 will no longer rotate. When the impact column 19, under the action of the second spring 21, causes the hammer head 20 to abut against the inner limit plate 3, the impact column 19 stops moving. The second ratchet 18 on one side of the impact column 19 abuts against the ratchet 14, and the piston trigger 6 returns to its initial position. If one impact is insufficient to remove the burrs and flash from the workpiece, multiple impacts can be repeated.

Claims

1. A burr and flash impact hammer, characterized in that: It includes a main housing (1), a removal component that is slidably connected to the main housing (1) and extends to the outside of the main housing (1) for impact removal of burrs and flash, a power component that is disposed on one side of the main housing (1) for providing a power source, a transmission component that is installed inside the main housing (1) and linked with the power component, and an impact component that is disposed above the removal component and cooperates with the transmission component to drive the removal component to impact downward.

2. The burr and flash impact hammer according to claim 1, characterized in that: The removal assembly includes an impact hammer (2), an inner limiting plate (3) fixedly installed on the top of the impact hammer (2) and slidably connected to the inside of the main housing (1), and a pounding head (5) detachably connected to the impact hammer (2) and located below the main housing (1).

3. The burr and flash impact hammer according to claim 2, characterized in that: The outer periphery of the impact hammer (2) is fixedly connected to the outer limiting plate (4), and the outer limiting plate (4) is located between the main housing (1) and the pounding head (5).

4. The burr and flash impact hammer according to claim 1, characterized in that: The power assembly includes a piston trigger (6) disposed on one side of the main housing (1), a connecting rod (7) slidably connected to the inside of the main housing (1) and extending one end to the outside of the main housing (1) and fixedly connected to the piston trigger (6), a guide rod (8) slidably connected to the inside of the main housing (1) and extending one end to the outside of the main housing (1) and fixedly connected to the piston trigger (6), a first spring (9) sleeved on the outer periphery of the guide rod (8) and fixedly connected between the piston trigger (6) and the main housing (1), a toothed plate (10) slidably connected to the inside of the main housing (1) and extending one end to the outside of the main housing (1) and fixedly connected to the piston trigger (6), and a power gear (11) rotatably installed inside the main housing (1) and meshing with the toothed plate (10).

5. The burr and flash impact hammer according to claim 4, characterized in that: A limiting snap ring (12) is fixedly connected to the connecting rod (7) to prevent the connecting rod (7) from completely separating from the main housing (1).

6. The burr and flash impact hammer according to claim 4, characterized in that: The transmission assembly includes a concentric gear (13) coaxially connected to the power gear (11), a ratchet (14) concentrically sleeved on the outer circumference of the concentric gear (13) and rotatably connected to the main housing (1), a stop block (15) fixedly connected to the inner ring wall of the ratchet (14), a first ratchet (16) rotatably installed inside the main housing (1) and matched with the concentric gear (13), and a spring (17) abutting against the first ratchet (16) and engaging it in the tooth groove of the concentric gear (13). After the first ratchet (16) engages with the concentric gear (13), it drives the ratchet (14) to rotate unidirectionally by squeezing the stop block (15). The ratchet (14) is composed of a ratchet part and a non-ratchet part.

7. The burr and flash impact hammer according to claim 6, characterized in that: There is a gap between the outer teeth of the concentric gear (13) and the stop block (15).

8. The burr and flash impact hammer according to claim 6, characterized in that: The impact assembly includes an impact column (19) slidably mounted inside the main housing (1) and provided with a second ratchet (18), a hammer (20) fixedly connected to the bottom end of the impact column (19) and in contact with the inner limiting plate (3), and a second spring (21) fixedly connected to the top end of the impact column (19). The other end of the second spring (21) is fixedly connected to the inner wall of the main housing (1). The impact column (19) is engaged with the ratchet portion of the ratchet wheel (14) through the second ratchet (18).

9. The burr and flash impact hammer according to claim 8, characterized in that: The top of the impact column (19) is fixedly connected to a circular plate (24), and a second sliding guide groove (23) adapted to the circular plate (24) is provided inside the main housing (1).

10. The burr and flash impact hammer according to claim 1, characterized in that: A main cover plate (25) is installed on one side of the main housing (1), and a top cover plate (26) is installed on the top of the main housing (1).

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