Stone carving nicking tool with replaceable tool bit

Abstract

The utility model discloses a stone carving nicking tool with a replaceable tool bit, which belongs to the technical field of stone processing and comprises a handle, a support is mounted above the handle through a fixing bolt, and a replacement mechanism convenient for replacing the tool bit is arranged on one side of the support. By means of the replacement mechanism, the carving knife can meet the requirements of a worker for the knife heads of six different shapes, use is more flexible and convenient, when the knife heads are replaced, the connecting rod is pulled, the knife disc is rotated, after replacement, the connecting rod is loosened to reset the knife head, operation is more convenient, and the working efficiency is improved. The outside of one end of the handle of the graver is not shielded by other structures, so that a worker can hold the graver conveniently and use the graver more smoothly, when a certain graver head is damaged, the worker rotates the graver head and screws the graver head out of the mounting groove to replace the graver head, the damaged graver head can be replaced conveniently, graver heads in different shapes can be replaced conveniently, and use is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of stone processing, and particularly relates to a stone carving knife with replaceable cutter heads. Background Technique

[0002] A stone carving knife is a tool used for stone processing. During the process of stone carving, cutter heads of different shapes are required to engrave lines of different widths and depths. In order not to replace the carving knife so frequently, a stone carving knife with replaceable cutter heads is needed.

[0003] Among them, through retrieval, it is found that there is an application number CN202321202096.0, which discloses a carving tool for a decorative stone processing device, including a main body component and a replacement component, including a set first top plate and a protective cover, and an internal thread hole opened in the protective cover. It has the advantages of dividing the cutter post and the cutter head into two parts, connecting the cutter post and the cutter head into two parts through the connection of the internal thread hole and the external thread, achieving the ability to replace any part separately during use, reducing production and material costs to a certain extent, setting the external hexagon and the internal hexagon to be fixed, strengthening the connection strength between the cutter post and the cutter head to a certain extent, and preventing the internal thread hole and the external thread from loosening during rotation.

[0004] However, through research, it is found that: this carving tool cannot meet the needs of workers for carving knives of different shapes. During the carving work, multiple carving tools need to be prepared to make the carving work proceed smoothly. It is not flexible enough to use, and the replacement of the cutter head of this device is relatively cumbersome and not convenient enough to use. Moreover, this carving knife is not easy for workers to hold. Therefore, a new device is provided to solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a stone carving knife with replaceable cutter heads to solve the above problem of inflexible and inconvenient use.

[0006] The technical scheme adopted by the utility model is as follows: A stone carving knife with replaceable cutter heads includes a handle, and a bracket is installed above the handle through a fixing bolt; a stress rod is slidably arranged inside the handle.

[0007] A replacement mechanism for facilitating the replacement of the cutter head is arranged on one side of the bracket.

[0008] Among them, the replacement mechanism includes a connecting column, a cutter head, an installation groove, a tool bit and a screw. One side of the bracket is fixedly installed with a connecting column. The other end of the connecting column is rotatably connected with a cutter head through a hollow turntable. The other side of the cutter head is equidistantly and circumferentially embedded with installation grooves, and a threaded hole is embedded at the center of the interior of the installation groove. A tool bit is installed inside the installation groove. One side of the tool bit seat is fixedly installed with a screw that fits with the threaded hole inside the installation groove. The number of installation grooves is six, and one end of the handle corresponds to the lowermost installation groove of the cutter head. One side of the bracket is fixedly installed with a protective shell, and the protective shell is nested outside the cutter head. Connecting blocks are fixedly embedded and installed equidistantly and circumferentially on the outer periphery of the cutter head.

[0009] Among them, a cavity is embedded at one end of the connecting column close to the cutter head. A clamping groove is embedded inside the cavity. A clamping block is movably connected inside the clamping groove. One side of the clamping block is fixedly installed with a connecting rod. The connecting rod extends from the hollow part of the hollow turntable to the other side of the cutter head through a through hole, and then extends to the outside of one side of the protective shell through a square through groove on the surface of the protective shell. The part of the connecting rod close to the protective shell is square, and the remaining part is cylindrical. A limiting block is nested outside the connecting rod, and a limiting groove that fits with the limiting block is embedded at the center of the cutter head. A spring ring is nested outside the connecting rod. Both the clamping block and the limiting block are regular hexahedrons, and the clamping groove fits with the clamping block.

[0010] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0011] 1. In the present utility model, through the replacement mechanism, one such engraving tool can meet the needs of workers for six different-shaped tool bits, making it more flexible and convenient to use. When replacing the tool bit, pull the connecting rod and rotate the cutter head, and then release the connecting rod to make it reset after replacement, making the operation more convenient.

[0012] 2. In the present utility model, there is no other structure blocking the outside of one end of the handle of the engraving tool, making it convenient for workers to hold and more comfortable to use.

[0013] 3. In the present utility model, when a certain tool bit is damaged, the worker rotates the tool bit and screws it out of the installation groove for replacement, which is convenient for replacing the damaged tool bit and also for replacing tool bits with different shapes, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0015] Figure 2 In the present utility model Figure 1 is an enlarged schematic structure diagram of part A;

[0016] Figure 3This is a schematic diagram of the overall side sectional structure in the present utility model;

[0017] Figure 4 In the present utility model Figure 3 Schematic enlarged structure diagram at position B;

[0018] Figure 5 Schematic diagram of the partial three - dimensional structure of the clamping block in the present utility model;

[0019] Figure 6 Schematic diagram of the front structure of the cutter head in the present utility model.

[0020] Markings in the figure: 1. Handle; 101. Bracket; 1011. Protective shell; 102. Connecting column; 1021. Cavity; 1022. Card slot; 103. Connecting rod; 1031. Clamping block; 1032. Spring ring; 2. Cutter head; 201. Installation groove; 202. Tool bit; 2021. Screw; 203. Connecting block; 204. Limiting block; 3. Stress rod. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] In the present utility model:

[0023] Referring to Figures 1-6 , a stone carving knife with replaceable tool bits includes a handle 1, and a bracket 101 is installed above the handle 1 through a fixing bolt;

[0024] A replacement mechanism for facilitating the replacement of tool bits is provided on one side of the bracket 101.

[0025] Referring to Figure 1 , 2 , 3, 4, 6, in this embodiment, the replacement mechanism includes a connecting column 102, a cutter head 2, an installation groove 201, a tool bit 202 and a screw 2021. A connecting column 102 is fixedly installed on one side of the bracket 101, the other end of the connecting column 102 is rotatably connected to a cutter head 2 through a hollow turntable, a plurality of installation grooves 201 are equidistantly and circumferentially embedded on the other side of the cutter head 2, and a threaded hole is embedded at the center of the interior of the installation groove 201. A tool bit 202 is installed inside the installation groove 201, and a screw 2021 that fits with the threaded hole inside the installation groove 201 is fixedly installed on one side of the tool bit seat of the tool bit 202. The number of installation grooves 201 is six, and one end of the handle 1 corresponds to the lowermost installation groove 201 of the cutter head 2;

[0026] The staff members screw the screws 2021 on one side of the six cutter heads 202 with different shapes into the threaded holes of the six mounting grooves 201 respectively. When the staff members need to use a certain cutter head 202, they rotate the cutter disc 2 to make the cutter head 202 with the corresponding shape rotate to the bottom of the cutter disc 2. At this time, the cutter head 202 is exactly aligned with the handle 1. The staff member holds the handle 1 and uses the cutter head 202 for engraving. When a certain cutter head 202 is damaged, the staff member rotates the cutter head 202 and unscrews it from the mounting groove 201 for replacement. One such device can meet the staff's needs for six cutter heads with different shapes, making it more convenient to use.

[0027] Refer to Figures 1-3 , in this embodiment, a protective shell 1011 is fixedly installed on one side of the bracket 101, and the protective shell 1011 is nested outside the cutter disc 2. The protective shell 1011 shields the other five cutter heads 202 except the bottom of the cutter disc 2 to prevent the staff from accidentally touching and getting injured.

[0028] Refer to Figure 1 、 3 、4, 5, in this embodiment, connecting blocks 203 are fixedly installed on the outer periphery of the cutter disc 2 at equal intervals. One end of the connecting column 102 close to the cutter disc 2 is embedded with a cavity 1021. A clamping groove 1022 is embedded inside the cavity 1021. A clamping block 1031 is movably connected inside the clamping groove 1022. One side of the clamping block 1031 is fixedly installed with a connecting rod 103, and the connecting rod 103 extends from the hollow part of the hollow turntable to the other side of the cutter disc 2 through a through hole, and then extends to the outside of the protective shell 1011 through a square through groove on the surface of the protective shell 1011. The part of the connecting rod 103 close to the protective shell 1011 is square, and the remaining part is cylindrical. A limiting block 204 is nested outside the connecting rod 103, and a limiting groove that fits the limiting block 204 is embedded at the center of the cutter disc 2. A spring ring 1032 is nested outside the connecting rod 103. Both the clamping block 1031 and the limiting block 204 are regular hexahedrons, and the clamping groove 1022 fits the clamping block 1031.

[0029] When it is necessary to replace the cutter head 202, the staff member pulls the connecting rod 103, and the connecting rod 103 drives the clamping block 1031 to disengage from the clamping groove 1022 and enter the cavity 1021. The limiting block 204 disengages from the limiting groove. Then the staff member rotates the cutter disc 2 from the connecting block 203 on the outer periphery of the cutter disc 2. The connecting block 203 increases the friction between the staff member's hand and the cutter disc 2, making it easier to rotate the cutter disc 2 until the required cutter head 202 rotates to the bottom of the cutter disc 2. The staff member releases the connecting rod 103, and under the action of the elastic force of the spring ring 1032, the connecting rod 103 resets, and then the clamping block 1031 resets inside the clamping groove 1022, and the limiting block 204 resets inside the limiting groove, fixing the cutter disc 2 and the connecting column 102 together.

[0030] Furthermore, a force-receiving rod 3 is slidably arranged inside the handle 1, and the end of the force-receiving rod 3 is magnetically arranged. By extending the force-receiving rod 3 to fit into the groove on the back of the cutter head 2, the connection strength between the handle 1 and the cutter head 2 can be enhanced, indirectly enhancing the connection between the handle 1 and the tool bit 202, making the tool bit 202 more obedient and having stronger followability.

[0031] Working principle: First, the staff screws the screws 2021 on one side of the six different-shaped tool bits 202 into the threaded holes of the six mounting grooves 201 respectively. Then, the staff pulls the connecting rod 103, and the connecting rod 103 drives the block 1031 to disengage from the card slot 1022 and enter the cavity 1021, and the limiting block 204 disengages from the limiting slot. After that, the staff rotates the cutter head 2 from the connecting block 203 on the outer periphery of the cutter head 2. The connecting block 203 increases the friction force between the staff's hand and the cutter head 2, making it easier to rotate the cutter head 2 until the required tool bit 202 rotates to the bottom of the cutter head 2. Then, the staff releases the connecting rod 103, and under the action of the elastic force of the spring coil 1032, the connecting rod 103 resets, and then the block 1031 resets inside the card slot 1022, and the limiting block 204 resets inside the limiting slot, fixing the cutter head 2 and the connecting column 102 together. The protective shell 1011 shields the other five tool bits 202 except the bottom one of the cutter head 2 to prevent the staff from accidentally touching and causing damage. After that, the staff holds the handle 1 and uses the tool bit 202 for carving. Finally, when a certain tool bit 202 is damaged, the staff rotates the tool bit 202 and unscrews it from the mounting groove 201 for replacement. One such device can meet the staff's needs for six different-shaped tool bits, making it more convenient to use.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stone carving knife with a replaceable cutter head, comprising a handle (1), characterized in that: Above the handle (1), a bracket (101) is installed through a fixing bolt; On one side of the bracket (101), a replacement mechanism for facilitating the replacement of the cutter head is provided; The replacement mechanism includes a connecting column (102), a cutter disc (2), an installation groove (201), a cutter head (202), and a screw (2021); On one side of the bracket (101), a connecting column (102) is fixedly installed. The other end of the connecting column (102) is rotatably connected to a cutter disc (2) through a hollow turntable. On the other side of the cutter disc (2), installation grooves (201) are equidistantly and circularly embedded. At the center of the interior of the installation groove (201), a threaded hole is embedded. A cutter head (202) is installed inside the installation groove (201). On one side of the cutter base of the cutter head (202), a screw (2021) that fits with the threaded hole inside the installation groove (201) is fixedly installed; Inside the handle (1), a force-bearing rod (3) is slidably arranged.

2. The stone carving knife with replaceable cutter head according to claim 1, wherein: The number of the installation grooves (201) is six, and one end of the handle (1) corresponds to the lowermost installation groove (201) of the cutter disc (2).

3. The stone carving knife with replaceable cutter head according to claim 1, characterized in that: On one side of the bracket (101), a protective shell (1011) is fixedly installed, and the protective shell (1011) is nested outside the cutter disc (2).

4. The stone carving knife with replaceable cutter head according to claim 1, characterized in that: On the outer periphery of the cutter disc (2), connecting blocks (203) are equidistantly and circularly embedded and fixedly installed.

5. The stone carving knife with replaceable cutter head according to claim 1, characterized in that: At one end of the connecting column (102) close to the cutter disc (2), a cavity (1021) is embedded. Inside the cavity (1021), a clamping groove (1022) is embedded. Inside the clamping groove (1022), a clamping block (1031) is movably connected. On one side of the clamping block (1031), a connecting rod (103) is fixedly installed. The connecting rod (103) extends from the hollow part of the hollow turntable to the other side of the cutter disc (2) through a through hole, and then extends to the outside of one side of the protective shell (1011) through a square through groove on the surface of the protective shell (1011). The part of the connecting rod (103) close to the protective shell (1011) is square, and the remaining part is cylindrical. A limiting block (204) is nested outside the connecting rod (103), and a limiting groove that fits with the limiting block (204) is embedded at the center of the cutter disc (2). A spring ring (1032) is nested outside the connecting rod (103).

6. The stone carving knife with replaceable cutter head according to claim 5, characterized in that: Both the clamping block (1031) and the limiting block (204) are in the shape of a regular hexahedron, and the clamping groove (1022) fits with the clamping block (1031).

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