Coal cutting tooth mold structure capable of preventing mold cracking

Abstract

The utility model belongs to the technical field of coal cutting tooth molds, and particularly relates to a coal cutting tooth mold structure capable of preventing mold cracking, which comprises a fixed box, a limiting frame is fixedly arranged on the inner wall of the bottom of the fixed box, a fixed frame is fixedly arranged on the top of the fixed box, and a first motor is fixedly arranged on the top of the fixed frame. A one-way lead screw is fixedly installed at the output end of the first motor, through the arranged protection assembly, after the upper female die and the lower female die are aligned, the second motor can be controlled to drive the control shaft to rotate, the control shaft can drive the rotating block to rotate after rotating, and the rotating block can drive the connecting rod to swing in the rotating process; the connecting rod can drive the sliding block to slide in the opposite direction in the moving process, so that the sliding block can drive the female die protection outer ring to fit the upper female die and the lower female die after sliding, the female die protection outer ring can protect the upper female die and the lower female die, and the device is convenient and rapid to disassemble, assemble and connect.

Description

Technical Field

[0001] The utility model relates to the technical field of coal pick teeth molds, in particular to a coal pick teeth mold structure for preventing mold cracking. Background Art

[0002] Coal pick teeth are important components of coal mining equipment. Traditional processing methods all use integral molds or split molds with small cores for upsetting. During the use of integral molds, due to concentrated stress, the molds are prone to cracking. While split molds with small cores are prone to demolding during upsetting extrusion. After slight demolding, burrs will be generated on the workpiece, and the workpiece will also be over-upset, resulting in insufficient head weight for forming. During the production of coal pick teeth, a coal pick teeth mold structure for preventing mold cracking is needed for manufacturing;

[0003] The publication number CN 214768660 U discloses a coal pick teeth mold structure for preventing mold cracking, including an outer die holder. An upper inner die core and a lower inner die core are sequentially arranged from top to bottom in the outer die holder. The upper inner die core and the lower inner die core are respectively press-fitted into the outer die holder by interference fit. The interference amount between the upper inner die core and the lower inner die core and the outer die holder is 0.7 mm. Interference press-fitting surfaces are respectively arranged on the outer sides of the upper inner die core and the lower inner die core. The pressure angle of the interference press-fitting surface is 1°. The diameter of the upper end of the upper inner die core is smaller than the diameter of the lower end of the lower inner die core;

[0004] When in use, the connection of the upper die and the lower die of this device is relatively inconvenient, and workers need to use greater force to press. Due to its interference fit, it is relatively inconvenient to disassemble the upper die and the lower die after use. Therefore, we propose a coal pick teeth mold structure for preventing mold cracking. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a coal pick teeth mold structure for preventing mold cracking is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coal pick teeth mold structure for preventing mold cracking, including a fixed box. A limiting frame is fixedly installed on the bottom inner wall of the fixed box. A fixed frame is fixedly installed on the top of the fixed box. A first motor is fixedly installed on the top of the fixed frame. The output end of the first motor is fixedly installed with a one-way lead screw. A sliding plate is threadedly installed on the outer side of the one-way lead screw; a protection component, the protection component is installed on the limiting frame; a connection component, the connection component is installed on the fixed box and the sliding plate.

[0008] Preferably, the protection component includes a second motor, a control shaft, a rotating block, a sliding block, a connecting rod, and an outer protection ring for the female die. The second motor is fixedly installed on the inner bottom wall of the limiting frame. The control shaft is fixedly installed at the output end of the second motor. The rotating block is fixedly installed on the top of the control shaft. The sliding block is slidably installed on the left and right sides outside the limiting frame. The connecting rod is rotatably installed on the front and back sides of the top of the rotating block. The other end of the connecting rod is rotatably installed above the sliding block. The outer protection ring for the female die is fixedly installed on one side of the sliding block.

[0009] By adopting the above technical solution, after the sliding block moves, it can drive the outer protection ring for the female die to slide, so that the outer protection ring for the female die can protect the upper female die and the lower female die.

[0010] Preferably, the connecting component includes a third motor, a bidirectional lead screw, a fixed rod, a clamping block, an upper female die, and a lower female die. The third motor is fixedly installed inside the sliding plate and the fixed box. The bidirectional lead screw is fixedly installed at the output end of the third motor. The fixed rod is fixedly installed inside the fixed box and the sliding plate. The clamping blocks are threadedly installed on the left and right sides outside the bidirectional lead screw. The clamping blocks are slidably installed on the left and right sides outside the fixed rod. The upper female die is arranged in the middle of the upper clamping block. The lower female die is arranged in the middle of the lower clamping block.

[0011] By adopting the above technical solution, the upper female die and the lower female die are relatively stable when being clamped, and the disassembly is convenient and fast.

[0012] Preferably, a slide bar is fixedly installed between the left and right inner walls of the limiting frame. Sliding grooves are formed on the front and back sides of one side of the sliding block, and the slide bar is fitted with the sliding grooves.

[0013] By adopting the above technical solution, the sliding grooves facilitate the limitation of the sliding block, so that the sliding direction of the sliding block after being stressed is limited.

[0014] Preferably, a limiting groove is formed on the top of the fixed box, and the sliding block is slidably installed inside the limiting groove.

[0015] By adopting the above technical solution, the limiting groove makes it difficult for the sliding block to deviate from its position after being stressed, so that the sliding block can only slide.

[0016] Preferably, installation grooves are formed on the top of the fixed box and the sliding plate. The third motor is fixedly installed on one inner wall of the installation groove. The fixed rod is fixedly installed between the left and right inner walls of the installation groove.

[0017] By adopting the above technical solution, the installation groove facilitates the installation of the third motor, so that the upper female die and the lower female die are convenient for upsetting extrusion after being fixed, and it is not easy to be interfered during the extrusion process.

[0018] Preferably, through grooves are formed at the joints of the connecting rod with the rotating block and the sliding block, and fixing pins are arranged inside the through grooves.

[0019] By adopting the above technical solution, the connection between the connecting rod and the rotating block and the sliding block is relatively tight, and the connecting rod is not easily detached during rotation.

[0020] Preferably, the clamping blocks and the outer protective rings of the female dies are both semi-circular arcs in shape. Threaded holes and through grooves are formed on one side of the clamping blocks. The bidirectional lead screw is engaged with the threaded holes, and the outer diameter of the fixing rod is the same as the inner diameter of the through grooves.

[0021] By adopting the above technical solution, the semi-circular arcs facilitate the clamping blocks and the outer protective rings of the female dies to abut against the upper female die and the lower female die, resulting in a relatively large contact area. The threaded holes facilitate the bidirectional lead screw to drive the clamping blocks to slide in opposite directions after rotation.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] (1) For a coal cutting pick die structure for preventing die cracking of the present utility model, through the provided protective component, after the upper female die and the lower female die are aligned, the second motor can be controlled to drive the control shaft to rotate. After the control shaft rotates, it can drive the rotating block to rotate. During the rotation of the rotating block, it can drive the connecting rod to swing. During the movement of the connecting rod, it can drive the sliding block to slide in the opposite direction. As a result, after the sliding block slides, it can drive the outer protective ring of the female die to fit against the upper female die and the lower female die, so that the outer protective ring of the female die can protect them, and the disassembly and connection of the device are relatively convenient and fast;

[0024] (2) For a coal cutting pick die structure for preventing die cracking of the present utility model, through the provided connection component, the upper female die and the lower female die are respectively placed on the tops of the fixed box and the sliding plate and are located in the middle of the clamping blocks. The third motor is controlled to drive the bidirectional lead screw to rotate. The bidirectional lead screw drives the clamping blocks to slide in opposite directions through thread fitting, so that the clamping blocks can clamp and fix the upper female die and the lower female die. The first motor is controlled to drive the unidirectional lead screw to rotate, so that the unidirectional lead screw can drive the sliding plate to descend, and the upper female die clamped above can be aligned with and fit against the lower female die after descending. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of a coal cutting pick die structure for preventing die cracking proposed by the present utility model;

[0026] Figure 2 is a partial three-dimensional structural schematic diagram of a coal cutting pick die structure for preventing die cracking proposed by the present utility model;

[0027] Figure 3 Partial three-dimensional structural schematic diagram of a coal pick cutter die structure for preventing die cracking proposed by the present utility model;

[0028] Figure 4 is Figure 3 Schematic diagram of the structure of part A in

[0029] Figure 5 Explosion structural schematic diagram of a coal pick cutter die structure for preventing die cracking proposed by the present utility model.

[0030] In the figure: 1, fixed box; 2, limit frame; 3, fixed frame; 4, first motor; 5, one-way lead screw; 6, sliding plate; 7, second motor; 8, control shaft; 9, rotating block; 10, sliding block; 11, connecting rod; 12, outer protective ring of the concave die; 13, third motor; 14, bidirectional lead screw; 15, fixed rod; 16, clamping block; 17, upper concave die; 18, lower concave die. Specific implementation manners

[0031] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with specific embodiments. 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 making creative efforts belong to the scope of protection of the present utility model.

[0032] Refer to Figures 1-5 , a coal pick cutter die structure for preventing die cracking, including a fixed box 1, a limit frame 2 fixedly installed on the bottom inner wall of the fixed box 1, a fixed frame 3 fixedly installed on the top of the fixed box 1, a first motor 4 fixedly installed on the top of the fixed frame 3, a one-way lead screw 5 fixedly installed at the output end of the first motor 4, and a sliding plate 6 threadedly installed on the outer side of the one-way lead screw 5; a protection component installed on the limit frame 2; a connection component installed on the fixed box 1 and the sliding plate 6.

[0033] In this embodiment, the protection component includes a second motor 7, a control shaft 8, a rotating block 9, a sliding block 10, a connecting rod 11 and an outer protective ring 12 of the concave die. The second motor 7 is fixedly installed on the bottom inner wall of the limit frame 2, the control shaft 8 is fixedly installed at the output end of the second motor 7, the rotating block 9 is fixedly installed on the top of the control shaft 8, the sliding block 10 is slidably installed on the left and right sides outside the limit frame 2, the connecting rod 11 is rotatably installed on the front and rear sides of the top of the rotating block 9, the other end of the connecting rod 11 is rotatably installed above the sliding block 10, and the outer protective ring 12 of the concave die is fixedly installed on one side of the sliding block 10.

[0034] In this embodiment, the connecting component includes a third motor 13, a bidirectional lead screw 14, a fixed rod 15, a clamping block 16, an upper female mold 17 and a lower female mold 18. The third motor 13 is fixedly installed inside the sliding plate 6 and the fixed box 1. The bidirectional lead screw 14 is fixedly installed at the output end of the third motor 13. The fixed rod 15 is fixedly installed inside the fixed box 1 and the sliding plate 6. The clamping blocks 16 are threadedly installed on the left and right sides of the outer side of the bidirectional lead screw 14. The clamping blocks 16 are slidably installed on the left and right sides of the outer side of the fixed rod 15. The upper female mold 17 is arranged in the middle of the upper clamping block 16, and the lower female mold 18 is arranged in the middle of the lower clamping block 16.

[0035] In this embodiment, a slide bar is fixedly installed between the inner walls on the left and right sides of the limit frame 2. Sliding grooves are formed on the front and rear sides of one side of the sliding block 10, and the slide bar is in fit with the sliding grooves.

[0036] In this embodiment, a limit groove is formed at the top of the fixed box 1, and the sliding block 10 is slidably installed inside the limit groove.

[0037] In this embodiment, installation grooves are formed at the tops of the fixed box 1 and the sliding plate 6. The third motor 13 is fixedly installed on the inner wall of one side of the installation groove, and the fixed rod 15 is fixedly installed between the inner walls on the left and right sides of the installation groove.

[0038] In this embodiment, through grooves are formed at the joints of the connecting rod 11 with the rotating block 9 and the sliding block 10, and fixing pins are arranged inside the through grooves.

[0039] In this embodiment, the clamping blocks 16 and the outer protective ring 12 of the female mold are both in a semicircular arc shape. Threaded holes and through grooves are formed on one side of the clamping block 16. The bidirectional lead screw 14 is meshed with the threaded holes, and the outer diameter of the fixed rod 15 is the same as the inner diameter of the through grooves.

[0040] Specific operations are as follows. After the upper female die 17 and the lower female die 18 are aligned, the second motor 7 can be controlled to drive the control shaft 8 to rotate, so that the control shaft 8 can drive the rotating block 9 to rotate after rotation, and the rotating block 9 can drive the connecting rod 11 to swing during rotation, and the connecting rod 11 can drive the sliding block 10 to slide in the opposite direction during movement, so that the sliding block 10 can drive the outer protective ring 12 of the female die to fit the upper female die 17 and the lower female die 18 after sliding, so that the outer protective ring 12 of the female die can protect them, and the disassembly and connection of the device are more convenient and fast; the upper female die 17 and the lower female die 18 are respectively placed on the tops of the fixed box 1 and the sliding plate 6 and are located in the middle of the clamping blocks 16. The third motor 13 is controlled to drive the bidirectional lead screw 14 to rotate, so that the bidirectional lead screw 14 drives the clamping blocks 16 to slide in the opposite direction through thread fitting, so that the clamping blocks 16 can clamp and fix the upper female die 17 and the lower female die 18. The first motor 4 is controlled to drive the unidirectional lead screw 5 to rotate, so that the unidirectional lead screw 5 can drive the sliding plate 6 to descend, so that the upper female die 17 clamped above can be aligned with and fit the lower female die 18 after descending.

[0041] The above has introduced in detail a coal cutting tooth die structure for preventing die cracking provided by the present utility model. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A coal pick mold structure for preventing mold cracking, characterized in that: include: A fixed box (1), a limiting frame (2) is fixedly mounted on the inner wall of the bottom of the fixed box (1), a fixed frame (3) is fixedly mounted on the top of the fixed box (1), a first motor (4) is fixedly mounted on the top of the fixed frame (3), a one-way screw rod (5) is fixedly mounted on the output end of the first motor (4), and a sliding plate (6) is threadedly mounted on the outer side of the one-way screw rod (5); A protection component, wherein the protection component is mounted on the limiting frame (2); A connecting component is installed on the fixed box (1) and the sliding plate (6).

2. A coal pick mold structure for preventing mold cracking according to claim 1, characterized in that: The protection component comprises a second motor (7), a control shaft (8), a rotating block (9), a sliding block (10), a connecting rod (11) and a die protection outer ring (12); the second motor (7) is fixedly mounted on the bottom inner wall of the limiting frame (2); the control shaft (8) is fixedly mounted on the output end of the second motor (7); the rotating block (9) is fixedly mounted on the top of the control shaft (8); the sliding block (10) is slidably mounted on the left and right sides of the outer side of the limiting frame (2); the connecting rod (11) is rotatably mounted on the front and rear sides of the top of the rotating block (9); the other end of the connecting rod (11) is rotatably mounted above the sliding block (10); and the die protection outer ring (12) is fixedly mounted on one side of the sliding block (10).

3. A coal pick mold structure for preventing mold cracking according to claim 1, characterized in that: The connecting assembly comprises a third motor (13), a bidirectional screw rod (14), a fixed rod (15), a clamping block (16), an upper die (17) and a lower die (18); the third motor (13) is fixedly mounted on the inner side of the sliding plate (6) and the fixed box (1); the bidirectional screw rod (14) is fixedly mounted on the output end of the third motor (13); the fixed rod (15) is fixedly mounted on the inner side of the fixed box (1) and the sliding plate (6); the clamping block (16) is threadedly mounted on the left and right sides of the outer side of the bidirectional screw rod (14); the clamping block (16) is slidably mounted on the left and right sides of the outer side of the fixed rod (15); the upper die (17) is arranged in the middle of the upper clamping block (16); and the lower die (18) is arranged in the middle of the lower clamping block (16).

4. A coal pick mold structure for preventing mold cracking according to claim 2, characterized in that: A sliding rod is fixedly installed between the left and right inner walls of the limiting frame (2), and sliding grooves are provided on the front and rear sides of one side of the sliding block (10), and the sliding rod and the sliding groove are in close contact with each other.

5. A coal pick mold structure for preventing mold cracking according to claim 2, characterized in that: The top of the fixed box (1) is provided with a limiting groove, and the sliding block (10) is slidably mounted on the inner side of the limiting groove.

6. A coal pick mold structure for preventing mold cracking according to claim 3, characterized in that: The tops of the fixed box (1) and the sliding plate (6) are provided with mounting grooves, the third motor (13) is fixedly mounted on one inner wall of the mounting groove, and the fixing rod (15) is fixedly mounted between the left and right inner walls of the mounting groove.

7. A coal pick mold structure for preventing mold cracking according to claim 2, characterized in that: A through slot is provided at the connection between the connecting rod (11) and the rotating block (9) and the sliding block (10), and a fixing pin is provided inside the through slot.

8. The coal pick mold structure for preventing mold cracking according to claim 3, characterized in that: The clamping block (16) and the die protection outer ring (12) are both semicircular in shape, a threaded hole and a through slot are provided on one side of the clamping block (16), the bidirectional screw rod (14) is meshed with the threaded hole, and the outer diameter of the fixing rod (15) is the same as the inner diameter of the through slot.

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