Quick abrasive paper connecting structure of handheld sander

Abstract

The utility model relates to the technical field of auxiliary mounting devices, in particular to a handheld sander abrasive paper quick connecting structure which comprises a mounting seat, a placement hole is formed in one side of the mounting seat, a push-out plate is detachably mounted at the position of the placement hole, a push-out spring is fixedly mounted on the push-out plate, and a transposition hole is formed in the end face of the mounting seat. A transposition push rod is slidably mounted in the transposition hole and connected with a transposition drive, an insertion hole is formed in the side face, perpendicular to the side where the containing hole is located, of the mounting base, and an exit hole is formed in the end, right opposite to the transposition hole, of the mounting base and communicates with the transposition hole, the containing hole and the insertion hole. A dismounting hole is formed in the position, corresponding to a bolt of the handheld polisher, of the insertion hole, a spanner is rotatably installed in the dismounting hole, the spanner is installed in a sliding mode, and the spanner is connected with a dismounting drive. By arranging the quick connecting structure, the time for manual alignment and installation in the abrasive paper installation process is shortened, the abrasive paper replacement speed is increased, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of auxiliary installation devices, and in particular to a quick connection structure for sandpaper of a handheld sander. Background Art

[0002] During component processing, mechanical grinding is not suitable for special-shaped, small, or precision parts. Workers usually use handheld grinders to grind these parts. Ultrasonic handheld grinders are often used for polishing precision parts. The sandpaper in ultrasonic handheld grinders, also known as oilstone strips, has a short lifespan and requires frequent replacement.

[0003] There is a rectangular groove at the end of the grinder. The oilstone strip needs to be aligned and placed into the rectangular groove, and then tightened with bolts. It is time-consuming and laborious to replace it multiple times, which affects work efficiency. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a handheld sander sandpaper quick connection structure that facilitates rapid replacement of sandpaper.

[0005] The above-mentioned application objectives of this application are achieved through the following technical solutions:

[0006] A handheld sander sandpaper quick connection structure, comprising:

[0007] Mounting seat;

[0008] A placement hole, the placement hole being opened on one side of the mounting seat;

[0009] A push-out plate, the push-out plate being detachably mounted on the side of the mounting seat at the placement hole position;

[0010] An ejection spring, the ejection spring being fixedly mounted on the ejection plate and being slidably inserted into the placement hole during installation;

[0011] A transposition hole, the transposition hole being opened on the end surface of the mounting seat, the transposition hole being perpendicular to the placement hole and being located at the end of the placement hole;

[0012] a transposition push rod, the transposition push rod being slidably mounted in the transposition hole;

[0013] Transposition drive, wherein the transposition drive output end is connected to the transposition push rod;

[0014] An insertion hole, the insertion hole being arranged on a side surface of the mounting base perpendicular to the side surface where the placement hole is located, the insertion hole being directly opposite to the end of the side surface of the placement hole, and the insertion hole being adapted to the shape of the working end of the handheld sander;

[0015] An exit hole is provided at one end facing the transposition hole and is connected to the transposition hole, the placement hole and the insertion hole;

[0016] A disassembly hole, in which a wrench is rotatably mounted and slidably mounted, the disassembly hole being located at a position of the insertion hole corresponding to a bolt of the handheld sander;

[0017] Disassembly drive, the disassembly drive output end is fixedly connected to the wrench.

[0018] Optionally, the transposition drive is an electric push rod, the disassembly drive is a drive motor, the disassembly drive is slidably mounted on the mounting seat, the mounting seat is equipped with a control module, and the transposition drive and the disassembly drive are both electrically connected to the control module.

[0019] Optionally, the length of the transposition hole is smaller than the width of the placement hole.

[0020] Optionally, a through hole is opened on the side of the exit hole, a pre-tightening member is slidably installed in the through hole, and a spring is provided between the pre-tightening member and the through hole.

[0021] Optionally, the pre-tightening member is spherical.

[0022] Optionally, a collection box is slidably mounted on one end of the mounting base close to the exit hole.

[0023] Optionally, the transposition push rod is rotatably connected to a solenoid at a side close to the transposition drive, and a screw is fixedly mounted on an output end of the transposition drive, and the screw is threadably connected to the solenoid.

[0024] Optionally, a buzzer is fixedly mounted on the mounting base.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] By providing the quick connection structure, the time for manual alignment and installation during the installation of sandpaper is reduced, the speed of sandpaper replacement is accelerated, and work efficiency is improved;

[0027] The replacement push rod pushes the replaced sandpaper into the sander and then resets it. By setting the length of the replacement hole to be smaller than the width of the placement hole, the length of the replacement hole is smaller than the length of the sandpaper, thereby preventing the next replacement sandpaper from being brought into the replacement hole by the replacement push rod under the thrust of the push spring;

[0028] By setting a pre-tightening part, the replaced sandpaper is stuck in the exit hole near the end of the grinder by the pre-tightening part, forming support for the replaced new sandpaper, reducing the possibility of the new sandpaper falling before it is tightened by the bolts. When the sandpaper is replaced again, the sandpaper is pushed out and takes its place. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0030] Figure 2 This is a structural diagram of the position of the pre-tightening member in an embodiment of the present application;

[0031] Figure 3 It is a structural diagram of the transposition drive position of an embodiment of the present application.

[0032] Reference numerals: 1, mounting seat;

[0033] 21. Placement hole; 22. Push-out plate; 23. Push-out spring;

[0034] 31. Transposition hole; 32. Transposition push rod; 321. Solenoid; 322. Screw; 33. Transposition drive;

[0035] 41. Insert hole;

[0036] 5. Exit hole; 51. Pre-tightening member; 52. Collection box;

[0037] 61. Disassembly hole; 62. Disassembly drive. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to the accompanying drawings.

[0039] See also Figure 1 and Figure 2 , is a quick connection structure for sandpaper of a handheld sander disclosed in an embodiment of the present application, comprising a mounting base 1, a placement hole 21 is provided on one side of the mounting base 1, a push plate 22 is detachably installed at the position of the placement hole 21, a push spring 23 is fixedly installed on the push plate 22, and when installed, the push spring 23 can be slidably inserted into the placement hole 21, a transposition hole 31 is provided on the end surface of the mounting base 1, the transposition hole 31 is perpendicular to the placement hole 21 and is located at the end of the placement hole 21, a transposition push rod 32 is slidably installed in the transposition hole 31, and the transposition push rod 32 is connected to A transposition drive 33 is provided with an insertion hole 41 on the side of the mounting base 1 perpendicular to the side where the placement hole 21 is located. The insertion hole 41 is opposite to the end of the side of the placement hole 21. The insertion hole 41 is adapted to the shape of the working end of the hand-held sander. An exit hole 5 is provided at one end of the mounting base 1 opposite to the transposition hole 31. The exit hole 5 is connected with the transposition hole 31, the placement hole 21 and the insertion hole 41. A disassembly hole 61 is provided in the insertion hole 41 corresponding to the bolt position of the hand-held sander. A wrench is rotatably installed in the disassembly hole 61. The wrench can be slidably installed, and the wrench is connected to the disassembly drive 62.

[0040] Specifically, by setting the push spring 23, the sandpaper is automatically fed. After the sander is inserted into the insertion hole 41, the corresponding sandpaper is pushed into the sander through the shift push rod 32, and the bolts of the sander are disassembled and assembled by cooperating with the wrench and the disassembly drive 62.

[0041] In this way, by providing the quick connection structure, the time for manual alignment and installation during the installation of sandpaper is reduced, the speed of sandpaper replacement is accelerated, and work efficiency is improved.

[0042] In some feasible embodiments, the mounting base 1 is in the shape of a rectangular block, the placement hole 21 is a rectangular hole adapted for sandpaper, i.e., a whetstone strip. The push-out plate 22 is in the shape of a rectangular plate. For ease of installation, the push-out plate 22 is bolted to the mounting base 1. A push-out spring 23 is mounted on the push-out plate 22 and is used to push the sandpaper placed in the placement hole 21 to the installation position. The shift hole 31 is located at the upper end of the mounting base 1. When the shift push rod 32 is pressed downward, the sandpaper away from the push-out spring 23 is pushed into the sander. The insertion hole 41 is located on the side of the placement hole 21. The insertion hole 41 is positioned so that after the sander is inserted, the position where the sander is inserted into the sandpaper is below the sandpaper away from the push-out spring 23, so that the sandpaper is easily pushed into the sander. The exit hole 5 is located directly below the shift hole 31. When the shift push rod 32 pushes the sandpaper into the sander, the replaced sandpaper is pushed out of the sander into the exit hole 5. For ease of manufacture, the mounting base 1 is divided into two parts from the upper side of the placement hole 21, and the two parts are connected by bolts.

[0043] The transposition drive 33 and the disassembly drive 62 can be selected to be manual. The disassembly drive 62 can directly disassemble and assemble the bolts by controlling the wrench. The transposition drive 33 can be selected to be a pressing rod. In order to facilitate the next replacement, the pressing rod can be equipped with a reset spring.

[0044] As a specific embodiment of a quick-connect structure for sandpaper of a handheld grinder provided in the application, the transposition drive 33 is an electric push rod, the disassembly drive 62 is a drive motor, the disassembly drive 62 can be slidably installed on the mounting base 1, the mounting base 1 is equipped with a control module, and the transposition drive 33 and the disassembly drive 62 are both electrically connected to the control module.

[0045] In general, by providing an electric push rod, a drive motor and a control module, the quick connection structure is automated, further improving work efficiency.

[0046] In some feasible methods, a mounting plate is fixedly installed on the upper end of the mounting seat 1, the transposition drive 33 is fixedly installed on the mounting plate, a support frame is installed on the side of the mounting seat 1, and the disassembly drive 62 is installed on the support frame. The support frame supports the legs of the mounting seat 1 as a telescopic rod. To facilitate the resetting of the disassembly drive 62, a reset spring is built into the telescopic rod. The output end of the disassembly drive 62 is fixedly connected with a sleeve, and the wrench can be slidably installed in the sleeve. The sleeve can be slidably installed in the disassembly hole 61. For ease of use, a reset spring is installed in the sleeve. When the wrench rotates the bolt, the bolt moves axially, and the axial movement is balanced by the reset spring, reducing the trouble of moving the transposition drive 33.

[0047] Furthermore, a push switch is installed near one end of the mounting base 1 of the replacement drive 33. When the disassembly drive 62 is pressed, the push switch touches the side wall of the mounting base 1 and is pressed, triggering the switch to enable the control module to start executing the replacement program. The control module can be selected as a single-chip microcomputer control module.

[0048] Furthermore, in order to remind the user that the replacement is completed, the mounting base 1 is fixedly installed with a buzzer.

[0049] As another specific embodiment of the quick connection structure of sandpaper for a handheld sander provided in the application, the length of the transposition hole 31 is smaller than the width of the placement hole 21 .

[0050] In combination with the specific usage scenario, the replacement push rod 32 pushes the replaced sandpaper into the sander and then resets it. By setting the length of the replacement hole 31 to be smaller than the width of the placement hole 21, the length of the replacement hole 31 is smaller than the length of the sandpaper, thereby preventing the next replaced sandpaper from being brought into the replacement hole 31 by the replacement push rod 32 under the thrust of the ejection spring 23.

[0051] As a specific embodiment of a quick connection structure for sandpaper of a handheld grinder provided in the application, a through hole is opened on the side of the exit hole 5, a pre-tightening member 51 is slidably installed in the through hole, and a spring is arranged between the pre-tightening member 51 and the through hole.

[0052] It should be understood that by providing the pre-tightening member 51, the replaced sandpaper is stuck in the exit hole 5 near the end of the sander by the pre-tightening member 51, forming support for the replaced new sandpaper, reducing the possibility of the new sandpaper falling before being tightened by the bolts, and when the sandpaper is replaced again, the sandpaper is pushed out and replaced.

[0053] Furthermore, the preload member 51 is spherical

[0054] It should be understood that the spherical shape can reduce the situation where the sandpaper is restricted by the pre-tightening member 51 and cannot be pressed down.

[0055] In some feasible embodiments, one end of the through hole close to the outside of the mounting seat 1 is a threaded hole, the spring is fixedly connected to the preload member 51, and the end of the spring away from the preload member 51 is fixedly connected to the stud, which is threadedly connected to the threaded hole.

[0056] As a specific embodiment of the sandpaper quick connection structure of a handheld sander provided in the application, a collection box 52 is slidably mounted on one end of the mounting base 1 near the exit hole 5 .

[0057] It should be understood that the collection box 52 is provided to facilitate the collection of waste sandpaper.

[0058] In some feasible embodiments, a rectangular groove is provided at a corresponding position of the mounting base 1 , and the collecting box 52 is inserted and installed in the rectangular groove.

[0059] As a specific embodiment of the sandpaper quick connection structure of a handheld sander provided in the application, please refer to Figure 3 The transposition push rod 32 is rotatably connected to the solenoid 321 on one side close to the transposition drive 33 , and a screw 322 is fixedly installed on the output end of the transposition drive 33 , and the screw 322 is threadedly connected to the solenoid 321 .

[0060] It should be understood that by providing a rotatable screw tube 321, the distance between the transposition drive 33 and the transposition push rod 32 can be adjusted by rotating the screw tube 321, so as to more accurately control the transposition push rod 32 to push the sandpaper into place.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A quick connection structure for sandpaper of a handheld sander, characterized in that: include: Mounting seat (1); A placement hole (21), the placement hole (21) being opened on one side of the mounting seat (1); An ejection plate (22), the ejection plate (22) being detachably mounted at a location of a placement hole (21) on a side of the mounting seat (1); An ejection spring (23), the ejection spring (23) being fixedly mounted on the ejection plate (22), and when installed, the ejection spring (23) can be slidably inserted into the placement hole (21); A transposition hole (31), the transposition hole (31) being opened on the end surface of the mounting seat (1), the transposition hole (31) being perpendicular to the placement hole (21) and being located at the end of the placement hole (21); A transposition push rod (32), the transposition push rod (32) being slidably mounted in the transposition hole (31); A transposition drive (33), wherein an output end of the transposition drive (33) is connected to the transposition push rod (32); An insertion hole (41), the insertion hole (41) being arranged on a side of the mounting seat (1) perpendicular to the side where the placement hole (21) is located, the insertion hole (41) being directly opposite to the end of the side of the placement hole (21), and the insertion hole (41) being adapted to the shape of a working end of a handheld sander; An exit hole (5), the exit hole (5) being opened at an end directly facing the transposition hole (31) and being in communication with the transposition hole (31), the placement hole (21) and the insertion hole (41); a disassembly hole (61), a wrench being rotatably mounted in the disassembly hole (61), the wrench being slidably mounted, the disassembly hole (61) being located at a position of the insertion hole (41) corresponding to a bolt of a handheld sander; A disassembly drive (62), wherein an output end of the disassembly drive (62) is fixedly connected to the wrench.

2. The quick connection structure of sandpaper for a handheld sander according to claim 1, characterized in that: The transposition drive (33) is an electric push rod, the disassembly drive (62) is a drive motor, the disassembly drive (62) is slidably mounted on the mounting seat (1), the mounting seat (1) is equipped with a control module, and the transposition drive (33) and the disassembly drive (62) are both electrically connected to the control module.

3. The sandpaper quick connection structure for a handheld sander according to claim 1, characterized in that: The length of the transposition hole (31) is smaller than the width of the placement hole (21).

4. The quick connection structure of sandpaper for a handheld sander according to claim 1, characterized in that: A through hole is provided on the side of the exit hole (5), a pre-tightening member (51) is slidably mounted in the through hole, and a spring is provided between the pre-tightening member (51) and the through hole.

5. The sandpaper quick connection structure for a handheld sander according to claim 4, characterized in that: The pre-tightening member (51) is spherical.

6. The sandpaper quick connection structure for a handheld sander according to claim 1, characterized in that: A collection box (52) is slidably mounted on one end of the mounting seat (1) close to the exit hole (5).

7. The sandpaper quick connection structure for a handheld sander according to claim 1, characterized in that: The transposition push rod (32) is rotatably connected to a solenoid (321) at one side close to the transposition drive (33); a screw rod (322) is fixedly mounted on the output end of the transposition drive (33); and the screw rod (322) is threadably connected to the solenoid (321).

8. The sandpaper quick connection structure for a handheld sander according to claim 2, characterized in that: The mounting base (1) is fixedly mounted with a buzzer.

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