An inner die and grinder

Abstract

The utility model discloses an inner die head and grinder, inner die head includes fixed base and grinding head, and fixed base includes fixedly connected connecting portion and bearing portion, and grinding head is set up in connecting portion and is placed in one end of bearing portion, and grinding head and connecting portion joint together. Such setting makes inner die head when assembling in the shell of grinder, and the grinding head and connecting portion are connected and are fixed together in advance, and then are connected with the pivot, reduce the assembly step of grinding head, and the assembly difficulty is reduced. And the grinding head and fixed base split type design, more convenient grinding head's replacement, including the assembly of the grinder of this grinding head is more simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of grinding technology, and in particular to an internal grinding head and a grinding machine. Background Technology

[0002] In related technologies, when assembling a grinder, internal components such as the base and grinding head need to be connected to the rotating shaft one by one. However, the grinding head, base and other components are small, making assembly or disassembly difficult and time-consuming. Utility Model Content

[0003] This utility model proposes an internal grinding head and grinder, aiming to solve the problem of the difficulty in disassembling and assembling the internal parts of the grinder in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: An internal mold head, comprising: A fixed base includes a connecting part, a supporting part, and an adjusting part that are fixedly connected. The supporting part is arranged around the outer periphery of the connecting part. The connecting part is used to connect with a rotating shaft and can rotate with the rotating shaft. The adjusting part is disposed at the bottom of the supporting part. A grinding head is sleeved on the connecting part and placed at one end of the bearing part, and the grinding head is engaged with the connecting part.

[0005] Optionally, the bearing portion has a positioning protrusion at one end facing the grinding head, the positioning protrusion having a first guide slope; the grinding head has a positioning groove at one end facing the bearing portion that matches the positioning protrusion, the positioning groove having a second guide slope that matches the first guide slope, the positioning protrusion being engaged in the positioning groove, and the first guide slope and the second guide slope abutting against each other.

[0006] Optionally, multiple positioning grooves are provided, and the multiple positioning grooves are spaced apart along the circumference of the grinding head, and multiple positioning protrusions are provided accordingly.

[0007] Optionally, the end of the connecting part opposite to the bearing part has a snap-fit ​​portion protruding, and the end of the snap-fit ​​portion away from the connecting part has a buckle protruding radially along the snap-fit ​​portion. The grinding head passes through the snap-fit ​​portion, and the buckle is fastened to the end of the grinding head opposite to the bearing part, so as to snap the grinding head and the fixing seat together.

[0008] Optionally, the buckle has a third guide ramp, which is inclined downward along the axial direction of the fixing seat.

[0009] Optionally, the adjusting part is snap-fitted to the bottom of the bearing part, the bottom of the rotating shaft is provided with a thread, the adjusting part has a threaded hole, and the bottom of the rotating shaft is threadedly connected to the adjusting part.

[0010] This utility model also proposes a grinder, including a housing, a bracket, a rotating shaft, an elastic element, and a male mold head. The bracket is connected to the housing and has a rotating hole. The rotating shaft passes through the rotating hole. The male mold head is fixedly connected to the housing and is arranged around the outer periphery of the grinding head. The grinder is characterized in that it further includes an inner mold head as described in any of the above. After the rotating shaft passes through the bracket, the grinding head, and the bearing part in sequence, the end of the rotating shaft is connected to the adjusting part.

[0011] Optionally, the peripheral wall of the rotating shaft is provided with a limiting protrusion, the limiting protrusion abuts against the bracket, the elastic element is sleeved on the rotating shaft, and one end of the elastic element abuts against the bracket.

[0012] Optionally, the grinder further includes a gasket, which is installed between the limiting protrusion and the bracket, the limiting protrusion abutting against one side of the gasket 7 and the other side of the gasket abutting against the bracket.

[0013] Optionally, the grinder further includes a rotating cap, which is sleeved on the rotating shaft and abuts against the bracket and the elastic element. A bearing is provided at one end of the rotating cap facing the elastic element, and the bearing abuts against the elastic element.

[0014] The inner mold head of this utility model includes a fixed base and a grinding head. The fixed base includes a connecting part and a supporting part that are fixedly connected. The grinding head is sleeved on the connecting part and placed at one end of the supporting part, and the grinding head is snap-fitted with the connecting part. This arrangement allows the grinding head and the connecting part to be pre-connected and fixed together when the inner mold head is assembled into the housing of the grinder, and then connected to the rotating shaft, reducing the assembly steps of the grinding head and lowering the assembly difficulty. Furthermore, the separate design of the grinding head and the fixed base facilitates the replacement of the grinding head. The assembly of a grinder including this grinding head is simpler and more convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of one embodiment of the inner mold head of this utility model; Figure 2 for Figure 1 A cross-sectional view along the AA direction; Figure 3 This is a schematic diagram of the structure of one embodiment of the grinder of this utility model; Figure 4 for Figure 3 A cross-sectional view along the BB direction; Figure 5 This is an axial view of the fixing seat in one embodiment of the inner mold head of this utility model; Figure 6 This is an axial view of the grinding head in one embodiment of the inner mold head of this utility model.

[0017] Explanation of icon numbers: 100 Grinder 112 Carrying part 10 Inner mold head 1121 Positioning protrusion 11 Fixing seat 1122 First guide slope 111 Connecting part 113 Adjusting part 1111 Clamping part 12 Grinding head 1112 Buckle 121 Positioning groove 1113 Third axial slope 1211 Second guide slope 20 Housing 50 Rotating shaft 30 Support 51 Limiting protrusion 40 Male mold head 60 Elastic member 80 Rotary cap 70 Gasket The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] This invention provides an inner mold head 10 for connection to the rotating shaft 50 of the grinder 100. Please refer to [link / reference]. Figures 1 to 6As shown, the grinder 100 provided in this embodiment includes a housing 20, a rotating shaft 50, a motor, a gearbox, an inner mold head 10, and a bracket 30. One end of the rotating shaft 50 is connected to the gearbox, and the rotating shaft 50 is connected to the output end of the gearbox. The output end of the gearbox has a transmission hole that matches the cross-sectional shape of one end of the rotating shaft 50, so the gearbox can transmit torque to the rotating shaft 50 through the transmission hole. The gearbox is connected to the housing 20. The motor is connected to the input end of the gearbox, and the motor is used to provide torque and transmit torque to the gearbox, which then transmits the torque to the rotating shaft 50. In other embodiments, the motor can also be directly connected to one end of the rotating shaft 50 to transmit torque without using a gearbox. The motor is connected to the housing 20. The bracket 30 is connected to the housing 20 and has a rotating hole that matches the size and shape of the rotating shaft 50. The rotating shaft 50 passes through the rotating hole. In this embodiment, the cross-section of the rotating shaft 50 is diamond-shaped.

[0022] In one embodiment, the inner mold head 10 includes a fixed base 11 and a grinding head 12. The fixed base 11 includes a connecting portion 111 and a supporting portion 112 that are fixedly connected. The connecting portion 111 and the supporting portion 112 can be integrally formed to increase their connection strength and facilitate processing. The supporting portion 112 is arranged around the outer periphery of the connecting portion 111. The connecting portion 111 is used to be fixedly connected to the rotating shaft 50 and can rotate with the rotating shaft 50. The grinding head 12 is sleeved on the connecting portion 111 and placed at one end of the supporting portion 112. The grinding head 12 and the connecting portion 111 are snap-fitted together. This arrangement allows the grinding head 12 and the connecting portion 111 to be pre-connected and fixed together when the inner mold head 10 is assembled into the housing 20 of the grinder 100, and then connected to the rotating shaft 50, reducing the assembly steps of the grinding head 12 and lowering the assembly difficulty. Furthermore, the separate design of the grinding head 12 and the fixed base 11 makes it easier to replace the grinding head 12.

[0023] In one embodiment, such as Figure 5As shown, the bearing portion 112 has a positioning protrusion 1121 protruding from one end facing the grinding head 12. The positioning protrusion 1121 has a first guide slope 1122. The grinding head 12 has a positioning groove 121 that matches the positioning protrusion 1121 at one end facing the fixing seat 11. The positioning groove 121 has a second guide slope 1211 that matches the first guide slope 1122. The positioning protrusion 1121 is engaged in the positioning groove 121, and the first guide slope 1122 and the second guide slope 1211 abut against each other. The grinding head 12 is frustum-shaped and has a clearance hole inside. When the grinding head 12 and the fixing seat 11 are assembled, the grinding head 12 is inserted along the axial direction of the fixing seat 11, and the bottom surface of the grinding head 12 abuts against the upper end surface of the bearing portion 112. This allows the positioning protrusion 1121 of the bearing portion 112 to be inserted into the positioning groove 121 of the grinding head 12, preventing the grinding head 12 and the fixing seat 11 from rotating relative to each other and ensuring grinding accuracy. The arrangement of the first guide slope 1122 and the second guide slope 1211, while ensuring that the volume of the positioning protrusion 1121 is constant, increases the contact area between the bearing part 112 and the grinding head 12, further improving the stability of the installation. In addition, the slopes of the first guide slope 1122 and the second guide slope 1211 abut against each other, which can ensure that the installation is in place and there will be no installation deviation.

[0024] In one embodiment, such as Figure 6 As shown, multiple positioning grooves 121 are provided, and the multiple positioning grooves 121 are arranged at intervals along the circumference of the grinding head 12. Multiple positioning protrusions 1121 are provided accordingly, and the multiple positioning protrusions 1121 are inserted into the corresponding positioning grooves 121, which further ensures the connection stability between the grinding head 12 and the bearing part 112, and makes the grinding head 12 more uniformly stressed.

[0025] In one embodiment, a snap-fit ​​portion 1111 protrudes from the end of the connecting portion 111 opposite to the bearing portion 112. The snap-fit ​​portion 1111 is plate-shaped and has a certain degree of elasticity. A buckle 1112 protrudes radially from the end of the snap-fit ​​portion 1111 away from the connecting portion 1111. The grinding head 12 is frustum-shaped and has a stepped first hole and a second hole inside. The diameter of the second hole is larger than the diameter of the first hole and is close to the bearing portion 112. The outer peripheral wall of the connecting portion 111 contacts the inner wall of the second hole. The snap-fit ​​portion 1111 extends from the first hole, so that the buckle 1112 engages with the end of the grinding head 12 opposite to the bearing portion 112, preventing the snap-fit ​​portion 1111 and the grinding head 12 from separating axially. As a preferred embodiment, two snap-fit ​​portions 1111 are symmetrically arranged, further improving the connection stability between the grinding head 12 and the fixing seat 11.

[0026] In one embodiment, the latch 1112 has a third guide slope, which is inclined downward along the axial direction of the fixing base 11. Thus, when the grinding head 12 is inserted into the fixing base 11 along its axial direction, the grinding head 12 abuts against the third guide slope of the latch 1112, causing the latch 1112 to contract radially, allowing it to pass through the first hole of the grinding head 12. The latch 1112 then returns to its original shape and latches onto the end of the grinding head 12 facing away from the bearing portion 112, further reducing the assembly difficulty between the grinding head 12 and the fixing base 11.

[0027] In one embodiment, the fixed base 11 further includes an adjusting part 113, which is connected to the bottom snap-fit ​​1112 of the bearing part 112. The bottom of the rotating shaft 50 is provided with threads, and the adjusting part 113 has a threaded hole. The bottom of the rotating shaft 50 is threadedly connected to the adjusting part 113. The relative position between the grinding head and the rotating shaft 50 can be adjusted through the adjusting part 113 to adjust the grinding coarseness. In other embodiments, the adjusting part 113 may also be provided with a nut 1131 that engages with the thread of the rotating shaft 50; this is not limited here.

[0028] This utility model also proposes a grinder 100, including a housing 20, a support 30, a rotating shaft 50, an elastic element 60, and a male mold head 40. The support 30 is connected to the housing 20 and has a rotating hole. The rotating shaft 50 passes through the rotating hole. The male mold head 40 is fixedly connected to the housing 20 and is arranged around the outer periphery of the grinding head 12. The grinder 100 also includes an inner mold head 10 of any of the above embodiments. After the rotating shaft 50 passes through the support 30, the grinding head 12, and the bearing part 112 in sequence, the end of the rotating shaft 50 is connected to the adjusting part 113.

[0029] Optionally, the elastic element 60 can be a spring or a torsion spring, etc. The outer side of the grinding head 12 and the inner side of the male mold head 40 are both used for grinding materials. The grinding head 12 is connected to the rotating shaft 50 through a mounting base. Specifically, the mounting base has a through hole that matches the cross-section of the rotating shaft 50, so the rotating shaft 50 can drive the mounting base to rotate, and the mounting base drives the grinding head 12 to rotate. The male mold head 40 is mounted on the housing 20, and the grinding head 12 is located inside the male grinding head. The grinding head 12 can rotate coaxially with respect to the male mold head 40. The material passing between the outer side of the grinding head 12 and the inner side of the male grinding head is ground. After the material is ground and becomes smaller, it will fall out of the gap between the outer side of the grinding head 12 and the inner side of the male grinding head due to gravity, thus realizing the grinding function. Since the inner mold head 10 is an integral part, it is simpler and more convenient to assemble into the housing 20, improving assembly efficiency.

[0030] In one embodiment, a limiting protrusion 51 is provided on the peripheral wall of the rotating shaft 50, the limiting protrusion 51 abuts against the bracket 30, and an elastic member 60 is sleeved on the rotating shaft 50, with one end of the elastic member 60 abutting against the bracket 30.

[0031] like Figure 3 As shown, the rotating shaft 502 has a flat, locating protrusion 51 in the middle. The flat surface of the locating protrusion 51 is parallel to the central axis of the rotating shaft 50. This structure, compared to a design where the flat surface is perpendicular to the central axis of the rotating shaft 50, allows the first locating protrusion to withstand more axial force on the rotating shaft 50 with less material. In a preferred embodiment, the rotating shaft 50 and the locating protrusion 51 are integrally formed using stamping technology. In other embodiments, multiple locating protrusions 1121 can be provided, for example, two. The two locating protrusions are symmetrically arranged on both sides of the rotating shaft 502, and can both abut against the bracket 30, restricting the axial movement of the rotating shaft 50. This method reduces the need for slotting on the rotating shaft 50 and the use of locating plates, while maintaining the strength of the rotating shaft 50 in transmitting torque, reducing material usage, simplifying the assembly process, and lowering manufacturing costs.

[0032] In one embodiment, the grinder 100 further includes a gasket 70, which is installed between the limiting protrusion 51 and the bracket 30. The limiting protrusion 51 abuts against one side of the gasket 70, and the other side of the gasket 70 abuts against the bracket 30. The gasket 70 is installed between the limiting protrusion 51 and the bracket 30. To prevent the limiting protrusion 51 from passing through the rotation hole, the inner diameter of the through hole of the gasket 70 can be set smaller than the diameter of the rotating shaft 50 plus the diameter of the limiting protrusion 51. The limiting protrusion 51 abuts against the gasket 70, and the gasket 70 restricts the axial movement of the rotating shaft 50. The gasket 70 also restricts the direct friction between the limiting protrusion 51 and the bracket 30, reducing wear. To further reduce the friction between the gasket 70 and the limiting protrusion 51, the portion of the gasket 70 in contact with the limiting protrusion 51 can be made of a flexible material, or the gasket 70 can be composed of a flexible pad and a rigid pad stacked together; no limitation is made here.

[0033] In one embodiment, the grinder 100 further includes a rotating cap 80, which is sleeved on the rotating shaft 50 and abuts against the support 30 and the elastic member 60. A bearing is provided at one end of the rotating cap 80 facing the elastic member 60, and the bearing abuts against the elastic member 60. Thus, one end of the support 30 cooperates with the limiting protrusion 51 on the rotating shaft 50 to limit the position of the rotating shaft 50; the other end cooperates with the rotating cap 80 to limit the position of the adjusting spring. The cooperation between the rotating shaft 50 and the rotating cap 80 can improve the rotational stability of the rotating shaft 50. Furthermore, a bearing can be provided at the position of the rotating cap 80 to reduce friction between the spring and the rotating cap 80, extending its service life.

[0034] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An inner mold head, characterized in that, include: A fixed base includes a connecting part, a supporting part, and an adjusting part that are fixedly connected. The supporting part is arranged around the outer periphery of the connecting part. The connecting part is used to connect with a rotating shaft and can rotate with the rotating shaft. The adjusting part is disposed at the bottom of the supporting part. A grinding head is sleeved on the connecting part and positioned at one end of the bearing part, and the grinding head is engaged with the connecting part.

2. The inner mold head as described in claim 1, characterized in that, The bearing portion has a positioning protrusion at one end facing the grinding head, and the positioning protrusion has a first guide slope; the grinding head has a positioning groove at one end facing the bearing portion, and the positioning groove has a second guide slope that matches the first guide slope; the positioning protrusion is engaged in the positioning groove, and the first guide slope and the second guide slope abut against each other.

3. The inner mold head as described in claim 2, characterized in that, The positioning grooves are configured in multiple ways, and the multiple positioning grooves are arranged at intervals along the circumference of the grinding head, and the positioning protrusions are configured in multiple ways accordingly.

4. The inner mold head as described in claim 1, characterized in that, The connecting part has a snap-fit ​​portion protruding at one end away from the bearing part, and a buckle protruding radially along the other end of the snap-fit ​​portion away from the connecting part. The grinding head passes through the snap-fit ​​portion, and the buckle is fastened to the end of the grinding head away from the bearing part to snap the grinding head and the fixing seat together.

5. The inner mold head as described in claim 4, characterized in that, The buckle has a third guide slope, which is inclined downward along the axial direction of the fixing seat.

6. The inner mold head as described in claim 1, characterized in that, The adjusting part is snapped together with the bearing part, the bottom of the rotating shaft is provided with a thread, the adjusting part has a threaded hole, and the bottom of the rotating shaft is threadedly connected to the adjusting part.

7. A grinding tool, comprising a housing, a support, a rotating shaft, an elastic element, and a male mold head, wherein the support is connected to the housing, the support has a rotating hole, the rotating shaft passes through the rotating hole, and the male mold head is fixedly connected to the housing and circumferentially disposed around the outer periphery of the grinding head, characterized in that... The grinder further includes an inner mold head as described in any one of claims 1-6, wherein the rotating shaft passes sequentially through the bracket, the grinding head, and the bearing portion, and the end of the rotating shaft is connected to the adjusting portion.

8. The grinder as claimed in claim 7, characterized in that, The circumferential wall of the rotating shaft has a limiting protrusion that abuts against the bracket. The elastic element is sleeved on the rotating shaft, and one end of the elastic element abuts against the bracket.

9. The grinder as described in claim 8, characterized in that, The grinder also includes a gasket, which is installed between the limiting protrusion and the bracket. The limiting protrusion abuts against one side of the gasket, and the other side of the gasket abuts against the bracket.

10. The grinder as claimed in claim 7, characterized in that, The grinder also includes a rotating cap, which is sleeved on the rotating shaft and abuts against the bracket and the elastic element. A bearing is provided at one end of the rotating cap facing the elastic element, and the bearing abuts against the elastic element.

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