A shell fixing mechanism

Abstract

The present invention discloses a shell fixing mechanism, including a supporting limit assembly, a supporting assembly, and a driving device. The supporting limit assembly is used to clamp the shell; the supporting assembly is used to press against the inner circumference of the shell. The driving device is used to extend and retract the supporting assembly. At the same time, the fixing mechanism is provided with soft materials at the parts in contact with the shell to prevent the fixing mechanism from scratching the shell. The supporting limit assembly includes a limiting pressure block and a supporting block. The limiting pressure block is fixedly connected to a cylinder and can move up and down. When fixing the shell, the limiting pressure block is pressed down, and the supporting block is also pressed down accordingly. After the transmission of the driving device, the supporting assembly can be pushed out and pressed against the inner circumference of the shell. When the limiting pressure block is recovered, the supporting assembly is recovered by the driving device, and the shell can be removed from the fixing device. The present invention can conveniently install the shell on a lathe or other device, so as to facilitate the shell washing and other processes.

Description

Technical Field

[0001] The invention relates to the technical field of processing fixing fixtures, and in particular to a shell fixing mechanism. Background Art

[0002] In the process of producing the inner pot of the rice cooker, it is often necessary to fix the cylindrical inner pot of the rice cooker and perform processes such as washing, curling, chamfering, rolling, and painting. The traditional way to fix the inner pot of the rice cooker is to clamp the inner pot of the rice cooker into a positioning block, and the positioning block is connected to the rotating main shaft, so that the above-mentioned processes of the inner pot of the rice cooker can be performed.

[0003] When washing, curling, chamfering, rolling and painting the inner pot of the rice cooker, the rice cooker needs to rotate at high speed to cooperate with the above steps. During the rotation process, since there is no clamping mechanism, the inner pot of the rice cooker is prone to relative displacement with the positioning block, and the positioning block will directly cause scratches on the inner pot, resulting in the product being scrapped.

[0004] The Chinese invention patent with the authorization announcement number CN209664308U discloses a self-positioning lathe, the clamping part of which mainly includes a clamping seat, a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod of the self-positioning lathe form a positioning clamp, and the three positioning clamps are clamped on the outer peripheral side of the workpiece to be processed, and the workpiece to be processed is clamped between the clamping seat and the positioning clamp.

[0005] When the self-positioning lathe processes the bottom surface of the workpiece, the clamping device of the self-positioning lathe can effectively clamp the workpiece. However, the position where the inner pot of the rice cooker is processed is the outer side, and the inner pot of the rice cooker needs to be washed on the outer side. However, the outer side is the clamping position of the clamping device of the self-positioning lathe. For workpieces such as the inner pot of the rice cooker that need to be processed on the outer side, the clamping device of the self-positioning lathe will interfere with the workpiece, making it inconvenient to process the outer side. Summary of the invention

[0006] In order to solve the problem that the above-mentioned clamping device may interfere with the workpiece and is inconvenient to perform peripheral side processing, the present invention proposes a shell fixing mechanism, which is simple and convenient to operate and can clamp the shell firmly.

[0007] The solution adopted by the present invention is to provide a shell fixing mechanism, including a positioning truncated table for supporting the shell, and also including a top support and limiting assembly, which includes a support block and a limiting pressure block, the support block is fixedly arranged on the positioning truncated table and used to support the shell, and the limiting pressure block is used to press the shell onto the support block; and / or,

[0008] The support assembly comprises at least two telescopic rods with uniform intervals arranged on the limiting pressure block, and a driving device for driving the plurality of telescopic rods to expand or retract, wherein the telescopic rods are pressed tightly against the inner wall of the shell when expanded.

[0009] Preferably, the limiting pressure block is fixedly connected to a driving cylinder, and the driving cylinder enables the limiting pressure block to move up and down to press against or away from the shell.

[0010] Preferably, the support block is located below the limiting pressure block, and the support block is provided with an elastic support member which enables the support block to have a tendency to move toward the limiting pressure block.

[0011] Preferably, it further comprises: a fixed assembly frame fixedly connected to the positioning round table, wherein the fixed assembly frame is provided with:

[0012] A vertical sliding cavity, used to accommodate the support block and the elastic support member, wherein the support block is slidably connected in the vertical sliding cavity, and the support block is pressed against the inner bottom surface of the shell under the action of the elastic support member;

[0013] Preferably, the fixed assembly frame is further provided with: a horizontal sliding cavity for accommodating the driving device and the telescopic rod, and the telescopic rod is slidably connected to the horizontal sliding cavity.

[0014] Preferably, the support block includes a disc-shaped support portion and a cylindrical connecting portion, the support portion is used to fit and support the inner bottom surface of the shell, and the connecting portion is slidably inserted into the vertical sliding cavity and connected to the elastic support member.

[0015] Preferably, the driving device comprises:

[0016] A push-out structure, wherein the push-out structure pushes the telescopic rod out until it is tightly against the inner wall of the shell;

[0017] The recovery structure recovers the telescopic rod in the pressed state and separates it from the shell.

[0018] Preferably, the vertical sliding cavity is communicated with the horizontal sliding cavity, the pushing structure is arranged in the vertical sliding cavity and is dynamically connected to the bottom of the connecting part, and the end of the telescopic rod connected to the pushing structure is one of a matching arc surface or inclined surface, and when the support block is pressed down and slides along the vertical sliding cavity, the pushing structure is driven to move synchronously and press against the telescopic rod, thereby driving the telescopic rod to extend outward along the horizontal sliding cavity.

[0019] Preferably, the ejection structure is a ball movably placed in the vertical sliding cavity, one end of the elastic support member is fixed to the bottom of the vertical sliding cavity, and the other end abuts against the bottom of the ejection structure, and presses the ball tightly against the bottom of the connecting part.

[0020] Preferably, the ejection structure is integrally arranged at the bottom of the connecting part, the ejection structure is arranged as an inclined surface or an arc surface, and one end of the elastic support member is fixed to the bottom of the vertical sliding cavity, and the other end abuts against the bottom of the ejection structure.

[0021] Preferably, the recovery structure is an elastic ring; grooves are provided at one end of the plurality of telescopic rods abutting against the shell, and the elastic ring is fixedly sleeved in the plurality of the grooves.

[0022] Preferably, the end surface of the limiting pressure block abutting against the shell is fixedly provided with a soft material to prevent the shell from being scratched; the end surface of the support block abutting against the shell is fixedly provided with a soft material to prevent the shell from being scratched; the end surface of the telescopic rod abutting against the shell is fixedly provided with a soft material to prevent the shell from being scratched; the abutment between the positioning frustum and the shell is provided with a soft material to prevent the shell from being scratched.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The shell fixing mechanism described in the present application is clamped by two upper and lower clamping devices, and a plurality of supporting components are arranged on the inner circumference of the shell. The shell fixing mechanism has a simpler structure than the clamping seat of a plurality of clamps, and the clamping is more stable;

[0025] 2. The clamping component at the lower end includes a ball that can move up and down. When the limit pressure block is pressed down, the support block drives the ball to move downward, so that the multiple telescopic rods on both sides move outward and abut against the inner circumference of the shell; when the limit pressure block is retracted, the spring under the ball gives the ball an upward elastic force, and the elastic force of the annular rubber ring causes the telescopic rod to retract inward, and the shell can be removed from the fixing mechanism at this time; the above-mentioned operation of installing and removing the shell is simple and convenient, which improves production efficiency;

[0026] 3. The end faces of the telescopic rods where the multiple support rods contact the inner pot are provided with soft materials, which can increase the contact area, improve the friction, enhance the stability of the tight fit, and effectively prevent the inner pot of the rice cooker from being scratched by the telescopic rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is described in detail below with reference to the embodiments and accompanying drawings, wherein:

[0028] Figure 1 is a schematic diagram of a first embodiment with a housing;

[0029] Figure 2 is a schematic diagram of the first embodiment when the housing is removed;

[0030] Figure 3 is a cross-sectional view of the first embodiment;

[0031] Figure 4 is a cross-sectional view of the second embodiment.

[0032] 1. Limiting pressure block; 11. Driving cylinder; 101. Shell; 2. Positioning round table; 21. Support flange; 31. First support plate; 32. Second support plate; 4. Telescopic rod; 5. Support block; 6. Support spring; 7. Ball; 8. Annular rubber ring; 9. Soft material. DETAILED DESCRIPTION

[0033] First embodiment: See Figure 1 , Figure 2 A shell fixing mechanism includes a limiting pressure block 1 and a positioning truncated table 2. A shell 101 to be processed is clamped between the limiting pressure block 1 and the positioning truncated table 2. The limiting pressure block 1 is used to press down and fix the shell 101, and the positioning truncated table 2 is used to support the shell 101.

[0034] The limiting pressure block 1 is in a truncated cone shape. The upper end surface of the limiting pressure block 1 is bolted with a driving cylinder 11 that can move the limiting pressure block 1 up and down. The lower end surface of the limiting pressure block 1 is fixedly provided with a soft material 9.

[0035] The positioning truncated table 2 is in the shape of a truncated table that matches the shape and size of the housing 101. A circle of steps is formed at the upper edge of the positioning truncated table 2, and the steps are fixedly covered with a soft material 9. When the housing 101 is processed, the housing 101 is sleeved on the positioning truncated table 2 for positioning, and the edge of the housing 101 is buckled on the steps. The bottom of the positioning truncated table 2 is fixedly connected to a structure with a rotating power through a support flange 21. Driven by the power structure, the positioning truncated table 2 and the housing 101 sleeved thereon rotate synchronously at high speed.

[0036] The upper end surface of the positioning truncated table 2 is bolted with a fixed assembly frame, which is used to accommodate and limit the displacement of the support block 5, the support assembly, and the drive device. The fixed assembly frame includes: a first support plate 31 and a second support plate 32. The second support plate 32 is fixedly connected to the upper end surface of the first support plate 31; the first support plate 31 is fixedly connected to the upper end surface of the positioning truncated table 2. It should be noted that the first support plate 31 and the second support plate 32 can also be integrally cast into a fixed block.

[0037] Three horizontal sliding cavities are also horizontally opened in the first support plate 31. The three horizontal sliding cavities are arranged circumferentially around the center of the first support plate and are evenly spaced. The horizontal sliding cavity is used to accommodate the telescopic rod 4, and the telescopic rod 4 can slide horizontally in the horizontal sliding cavity to extend or retract.

[0038] A cylindrical portion is integrally extended upward from the axis of the second support disk, and a vertical sliding cavity is vertically opened in the cylindrical portion and passes through from top to bottom. The support block is slidably inserted in the vertical sliding cavity, and the vertical sliding cavity is connected to the three horizontal sliding cavities, that is, the vertical sliding cavity is opened at the intersection of the three horizontal sliding cavities.

[0039] See also Figure 3 The support block 5 is in the shape of a disk, and a cylindrical plug-in column is extended downward from the center of the bottom surface of the support block 5, and the connecting part is slidably plugged into the vertical sliding cavity. A soft material 9 is fixedly arranged on the upper end surface of the support block 5.

[0040] The telescopic rod 4 is cylindrical, and the end face of the telescopic rod 4 contacting the driving device is an inclined surface, and the end face of the telescopic rod 4 contacting the housing 101 is provided with a long groove, which is used to fix the elastic member and also for plugging the soft material 9.

[0041] The driving device includes a pushing structure and a recovery structure. In this embodiment, the pushing structure is a ball 7, and the recovery structure is an annular rubber ring 8. Specifically, the ball 7 is spherical and located in the vertical sliding cavity. The ball 7 abuts against the lower end surface of the support block 5 and the upper end surface of the support spring 6, that is, the bottom of the support spring is fixed on the first support plate, and the end abuts against the ball, so that the ball is always abutted against the bottom of the support block under the action of the support spring. The ball 7 serves as a force reversing device, which is used to convert the vertical pressure when the support block 5 is pressed down into a thrust for horizontally pushing out the telescopic rod 4. When the support block 5 is pressed down, the lower end surface of the support block 5 pushes the ball 7 downward, and the ball 7 moving downward simultaneously pushes the inclined surfaces of the three telescopic rods 4, pushing a section of the multiple telescopic rods 4 out of the horizontal sliding cavity and making the end surface of the telescopic rod 4 abut against the inner peripheral side of the shell 101.

[0042] The annular rubber ring 8 is used to recover the pushed out telescopic rod 4. The annular rubber ring 8 is sleeved on the groove of each telescopic rod 4. When the telescopic rod 4 is pushed out, the annular rubber ring 8 is tightened and accumulates elastic force; when the support block 5 moves upward, the ball 7 also moves upward under the elastic force of the support spring 6, and the inward tightening elastic force of the annular rubber ring 8 causes each telescopic rod 4 to retract into the horizontal sliding cavity.

[0043] The working mode of the fixing mechanism of the housing 101 is described in detail below.

[0044] When the housing 101 needs to be fixed to the fixing mechanism: Figure 1That is the schematic diagram of the housing 101 being fixed to the fixing mechanism. First, the housing 101 is turned upside down on the positioning truncated table 2. Specifically, the edge of the housing 101 abuts against the step of the positioning truncated table 2, and the inner bottom end surface of the housing 101 abuts against the upper end surface of the support block 5. The housing 101 is clamped between the limiting pressure block 1 and the support block 5; at this time, the telescopic rod 4 is located deep in the horizontal sliding cavity. Then the limiting pressure block 1 starts to be pressed down by the cylinder to which it is connected, and the support block 5 is also driven to move downward, and the support block 5 drives the ball 7, and at this time, the ball 7 starts to move down from the upper slope of the end of the telescopic rod 4; the telescopic rod 4 is pushed out of the horizontal sliding cavity by the ball 7, and the soft material 9 at the front end of the telescopic rod 4 abuts against the inner circumference of the housing 101; at this time, the housing 101 is clamped by the limiting pressure block 1 and the support block 5, and the inner circumference abuts against multiple telescopic rods 4, and the housing 101 is firmly fixed in this fixing mechanism, and the car washing process can be started at this time.

[0045] When the housing 101 needs to be removed, the limit pressure block 1 is retracted under the drive of the cylinder to which it is connected, and the support block 5 is relieved of the downward pressure, and the support spring 6 pushes up the ball 7, and the ball 7 pushes the support block 5 upward, and the ball 7 returns to the upper side of the inclined surface of the telescopic rod 4. At this time, the annular rubber ring 8 fixed at the front end of the telescopic rod 4 tightens the multiple telescopic rods 4 under the action of elasticity, so that the telescopic rods 4 are retracted to the deep side of the horizontal sliding cavity.

[0046] See also Figure 4 , Second embodiment: The ball 7 is combined with the support block 5 to form a new support block 5. The lower end of the new support block 5 is a truncated cone with an arc surface, which can also be replaced by a prism with an inclined surface; the end surface of the telescopic rod 4 that contacts the lower end of the new support block 5 can also be replaced by an arc surface. The arc surface or inclined surface of the lower end surface of the support block 5 abuts against the arc surface or inclined surface of the telescopic rod 4, which can also realize the function of pushing the telescopic rod 4 out of the horizontal sliding cavity and making the telescopic rod 4 abut against the inner circumference of the housing 101.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A housing fixing mechanism, comprising a positioning truncated table for supporting the housing, characterized in that: Also includes: A supporting and limiting assembly, comprising a supporting block and a limiting pressure block, wherein the supporting block is fixedly arranged on the positioning truncated table and used to support the shell, the limiting pressure block is used to press the shell onto the supporting block, the limiting pressure block is fixedly connected to a driving cylinder, the driving cylinder enables the limiting pressure block to move up and down to press against or away from the shell, the supporting block is located below the limiting pressure block, and the supporting block is provided with an elastic supporting member that enables the supporting block to have a tendency to move toward the limiting pressure block; A support assembly, comprising at least two evenly spaced telescopic rods disposed on the limiting pressure block, and a driving device for driving the plurality of telescopic rods to expand or retract, wherein the telescopic rods are pressed against the inner wall of the housing when expanded; It also includes: a fixed assembly frame fixedly connected to the positioning round table, and the fixed assembly frame is provided with: A vertical sliding cavity, used to accommodate the support block and the elastic support member, wherein the support block is slidably connected in the vertical sliding cavity, and the support block is pressed against the inner bottom surface of the shell under the action of the elastic support member; A horizontal sliding cavity, which is in communication with the vertical sliding cavity and is used to accommodate the driving device and the telescopic rod, and the telescopic rod is slidably connected in the horizontal sliding cavity; The driving device comprises: A push-out structure, wherein the push-out structure pushes out the telescopic rod until it is pressed against the inner wall of the shell, the push-out structure is arranged in the vertical sliding cavity and is dynamically connected to the bottom of the connecting portion in the support block, and the ends of the telescopic rod connected to the push-out structure are both matched arc surfaces or inclined surfaces, and when the support block is pressed down and slides along the vertical sliding cavity, the push-out structure is driven to move synchronously and press against the telescopic rod, thereby driving the telescopic rod to extend outward along the horizontal sliding cavity; A recovery structure is provided, wherein the recovery structure recovers the telescopic rod in a pressed state and separates it from the shell. The recovery structure is an elastic ring. A groove is provided at one end of the plurality of telescopic rods that abut against the shell. The elastic ring is fixedly sleeved in the plurality of the grooves.

2. The housing fixing mechanism according to claim 1, characterized in that: The support block includes a disc-shaped support portion and a cylindrical connection portion, the support portion is used to fit and support the inner bottom surface of the shell, and the connection portion is slidably inserted in the vertical sliding cavity and connected to the elastic support member.

3. The housing fixing mechanism according to claim 2, characterized in that: The ejection structure is a ball movably placed in the vertical sliding cavity. One end of the elastic support is fixed to the bottom of the vertical sliding cavity, and the other end abuts against the bottom of the ejection structure, pressing the ball tightly against the bottom of the connecting part.

4. The housing fixing mechanism according to claim 2, characterized in that: The push-out structure is integrally arranged at the bottom of the connecting part, and is arranged as an inclined surface or an arc surface. One end of the elastic support member is fixed to the bottom of the vertical sliding cavity, and the other end abuts against the bottom of the push-out structure.

5. The housing fixing mechanism according to claim 1, characterized in that: The end surface of the limiting pressure block abutting against the shell is fixedly provided with a soft material to prevent the shell from being scratched; the end surface of the support block abutting against the shell is fixedly provided with a soft material to prevent the shell from being scratched; the end surface of the telescopic rod abutting against the shell is fixedly provided with a soft material to prevent the shell from being scratched; the abutment between the positioning frustum and the shell is provided with a soft material to prevent the shell from being scratched.

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