Pressing mechanism

Abstract

The utility model belongs to the technical field of filling machines, and discloses a pressing mechanism. The pressing mechanism is used for pressing and fixing a piston cylinder on a valve body, the pressing mechanism comprises a pressing assembly, the pressing assembly comprises a pressing block and a locking piece, the pressing block can rotate so as to be switched between a first state and a second state, in the first state, in the Z-axis direction, at least part of the pressing block right faces a boss of the piston cylinder, the pressing block can abut against the boss of the piston cylinder, and in the second state, in the Z-axis direction, at least part of the pressing block can abut against the boss of the piston cylinder. In the second state, in the Z-axis direction, the pressing block avoids the boss so that the piston barrel can move in the Z-axis direction; in the first state, the locking piece can fix the pressing block to the valve body so that the pressing block can press and fix the piston barrel to the valve body. By using the pressing mechanism, the piston cylinder can be mounted or dismounted only by rotating the pressing block; an operator can easily complete pressing and releasing operation even in a narrow working environment, and the working efficiency and the installation performance are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filling machine technical field especially relates to a compression mechanism. BACKGROUND

[0002] The plunger filling machine has a piston cylinder and a valve body, and the piston cylinder and the valve body are usually connected by screws. However, due to the small distance between the filling valves and the high height of the piston cylinder, the operation space is limited, making it very inconvenient to disassemble and assemble the screws.

[0003] Therefore, it is necessary to provide a compression mechanism to solve the above problems. SUMMARY

[0004] The utility model discloses a compression mechanism, simplify the dismounting process, reduce the operation difficulty, improve work efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A compression mechanism for fixing the piston cylinder on the valve body, the compression mechanism comprises a compression assembly, the compression assembly comprises:

[0007] The pressing block can rotate to switch between the first state and the second state. In the first state, at least part of the pressing block is opposite to the boss of the piston cylinder along the Z-axis direction, and the pressing block can be pressed against the boss of the piston cylinder. In the second state, the pressing block avoids the boss along the Z-axis direction so that the piston cylinder can move along the Z-axis direction.

[0008] The locking member can fix the pressing block to the valve body in the first state, so that the pressing block tightly fixes the piston cylinder to the valve body.

[0009] Preferably, the locking member passes through the pressing block and the valve body in sequence, the locking member is screwed with the valve body, and the pressing block can rotate around the axis of the locking member.

[0010] Preferably, the locking member is a bolt.

[0011] Preferably, a gasket is arranged between the locking member and the pressing block.

[0012] Preferably, the pressing block is provided with a limiting notch, and part of the boss is accommodated in the limiting notch to limit the rotation of the pressing block in the first state.

[0013] Preferably, the pressing block is provided with a limiting member, and the limiting member can abut against the boss to limit the rotation of the pressing block in the first state.

[0014] As preferred, the pressing block comprises a pressing part and a supporting part distributed along the Z-axis direction, the supporting part is arranged on the valve body, and the pressing part is used for pressing or avoiding the boss.

[0015] As preferred, the outer circumferential wall of the pressing part is provided with an anti-skid layer.

[0016] As preferred, the material of the anti-skid layer is rubber.

[0017] As preferred, the number of the pressing assemblies is multiple, and the multiple pressing assemblies are arranged at intervals around the circumference of the piston cylinder.

[0018] The beneficial effects of the utility model are as follows:

[0019] The pressing mechanism is used for pressing and fixing the piston cylinder on the valve body, and comprises a pressing assembly, the pressing assembly comprises a pressing block and a locking piece, the pressing block can be rotated to switch between a first state and a second state, in the first state, at least part of the pressing block is opposite to the boss of the piston cylinder along the Z-axis direction, the pressing block can be pressed on the boss of the piston cylinder, in the second state, the pressing block avoids the boss along the Z-axis direction to enable the piston cylinder to move along the Z-axis direction; in the first state, the locking piece can fix the pressing block on the valve body, so that the pressing block can press and fix the piston cylinder on the valve body.

[0020] When the piston cylinder needs to be fixed on the valve body, the pressing block is rotated to switch to the first state, that is, at least part of the pressing block is opposite to the boss of the piston cylinder along the Z-axis direction, and the pressing block is fixedly connected with the valve body through the locking piece, so that the pressing block can exert a continuous and uniform pressing force on the piston to press and fix the piston cylinder on the valve body; when the piston cylinder needs to be disassembled or adjusted, the locking piece is loosened to fix the pressing block, and the pressing block is rotated to switch to the second state, that is, the pressing block avoids the boss along the Z-axis direction to provide sufficient movement space for the piston cylinder, so that the piston cylinder can move along the Z-axis direction without obstruction. The use of the pressing mechanism greatly simplifies the disassembly process, and the pressing block does not need to be frequently disassembled or installed, but only needs to be rotated to realize the installation or disassembly of the piston cylinder, thereby avoiding the problems of long time consumption and difficult alignment of the installation position of the screw during the traditional locking and fixing by using the screw; the operator can easily complete the pressing and releasing operation even in a small working environment, thereby greatly improving the working efficiency and installation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of the pressing mechanism provided by the utility model;

[0022] Figure 2 is a cross-sectional schematic view of the pressing mechanism provided by the utility model;

[0023] Figure 3 is a structural schematic view of the briquet provided by the utility model.

[0024] In the drawings:

[0025] 100, piston cylinder; 1001, boss; 200, valve body;

[0026] 1, briquet; 11, limiting gap; 12, pressing part; 13, supporting part;

[0027] 2, locking piece;

[0028] 3, gasket. DETAILED DESCRIPTION

[0029] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] A plunger filling machine has a piston cylinder and a valve body. The piston cylinder and the valve body are usually connected by screws. However, due to the small distance between the filling valves and the high height of the piston cylinder, the operating space is limited, making it very inconvenient to remove and install the screws.

[0034] To solve the above problems, such as Figures 1-3 As shown, this embodiment provides a clamping mechanism. This clamping mechanism is used to clamp and fix the piston cylinder 100 onto the valve body 200. The clamping mechanism includes a clamping assembly, which includes a clamping block 1 and a locking member 2. The clamping block 1 can rotate to switch between a first state and a second state. In the first state, along the Z-axis direction, at least a portion of the clamping block 1 is directly opposite the boss 1001 of the piston cylinder 100, and the clamping block 1 can press against the boss 1001 of the piston cylinder 100. In the second state, along the Z-axis direction, the clamping block 1 avoids the boss 1001 so that the piston cylinder 100 can move along the Z-axis direction. In the first state, the locking member 2 can fix the clamping block 1 onto the valve body 200 so that the clamping block 1 clamps and fixes the piston cylinder 100 onto the valve body 200.

[0035] When it is necessary to fix the piston cylinder 100 to the valve body 200, rotate the pressure block 1 to switch to the first state, that is, make at least a part of the pressure block 1 face the boss 1001 of the piston cylinder 100 along the Z-axis direction, and fix the pressure block 1 to the valve body 200 by the locking member 2, so that the pressure block 1 can apply a continuous and uniform pressing force to the piston to press and fix the piston cylinder 100 to the valve body 200; when it is necessary to disassemble or adjust the piston cylinder 100, loosen the locking member 2 to fix the pressure block 1, rotate the pressure block 1 to switch to the second state, that is, make the pressure block 1 avoid the boss 1001 along the Z-axis direction, providing sufficient movement space for the piston cylinder 100, so that the piston cylinder 100 can move unimpeded along the Z-axis direction. Using this clamping mechanism greatly simplifies the assembly and disassembly process. There is no need to frequently remove or install the clamping block 1. Simply rotating the clamping block 1 is enough to install or remove the piston cylinder 100. This avoids the problems of the traditional method of using screws for locking, which requires the screws to be completely removed, which takes a long time, and the difficulty in aligning the screws with the installation position during reinstallation. Operators can easily complete the clamping and releasing operations even in confined working environments, which greatly improves work efficiency and ease of installation.

[0036] Specifically, such asFigure 1 , Figure 2 As shown, the locking member 2 passes through the pressure block 1 and the valve body 200 in sequence. The locking member 2 is threadedly connected to the valve body 200, and the pressure block 1 can rotate around the axis of the locking member 2. The locking member 2 and the valve body 200 are connected by threads. Tightening the locking member 2 to screw it into the valve body 200 will fix the pressure block 1 onto the valve body 200. Tightening the locking member 2 to partially unscrew it from the valve body 200 will release the locking member 2 from fixing the pressure block 1. Then, rotating the pressure block 1 will switch it to the second state, allowing the piston cylinder 100 to be removed. Compared to the traditional screw connection method, this fixing method does not require unscrewing the locking part 2 out of the valve body 200 to disassemble the piston cylinder 100. Simply tighten or loosen the locking part 2 to press the pressure block 1 against the piston cylinder 100 or to allow the pressure block 1 to rotate to switch between the first and second states. This simplifies the disassembly and assembly process, reduces the difficulty of operation, and improves work efficiency.

[0037] In this embodiment, the locking element 2 is a bolt. Bolts are inexpensive and readily available.

[0038] Specifically, such as Figure 1 , Figure 2 As shown, a gasket 3 is provided between the locking member 2 and the pressure block 1. The gasket 3 increases the contact area between the head of the locking member 2 and the pressure block 1, which helps to disperse the pressure generated when the locking member 2 is pre-tightened, prevents local stress concentration, and thus protects the pressure block 1 and the locking member 2 from damage. The gasket 3 can absorb and disperse vibration and impact forces, which helps to reduce the loosening or damage of the connection caused by vibration and impact. The gasket 3 can play an anti-loosening role. Even if the locking member 2 is slightly loosened under vibration or impact, the gasket 3 can provide a certain resistance to prevent the locking member 2 from completely falling off and causing connection failure.

[0039] In one alternative embodiment, such as Figures 1-3 As shown, the pressure block 1 has a limiting notch 11. In the first state, a portion of the boss 1001 is accommodated in the limiting notch 11 to restrict the rotation of the pressure block 1. The cooperation between the limiting notch 11 and the boss 1001 can effectively restrict the rotation of the pressure block 1. When the locking member 2 is tightened, the pressure block 1 will not rotate with the locking member 2, ensuring that at least a portion of the pressure block 1 can press against the boss 1001, thus ensuring the stability and reliability of this clamping mechanism.

[0040] In another optional embodiment, a limiting member is protruding from the pressure block 1. In the first state, the limiting member can abut against the boss 1001 to restrict the rotation of the pressure block 1. The cooperation between the limiting member and the boss 1001 can effectively restrict the rotation of the pressure block 1. When the locking member 2 is tightened, the pressure block 1 will not rotate with the locking member 2, ensuring that at least part of the pressure block 1 can press against the boss 1001, thus ensuring the stability and reliability of this pressing mechanism.

[0041] Specifically, as shown in Figures 1-3 The support portion 13 is arranged on the valve body 200 to provide stable support for the pressing block 1, so that the pressing block 1 can be kept at a predetermined position when subjected to the pressure of the locking piece 2; the pressing block 1 is rotated to make the abutting portion 12 abut or avoid the boss 1001, so as to fix or disassemble the piston cylinder 100 on the valve body 200.

[0042] Specifically, the outer peripheral wall of the abutting portion 12 is provided with an anti-skid layer. When the operator rotates the pressing block 1 to switch between the first state and the second state, the anti-skid layer can increase the friction between the operator's hand and the abutting portion 12, so that the abutting portion 12 is more stable when rotated and is not easy to slip or slip off, which helps the operator to more accurately control the rotation of the pressing block 1; the anti-skid layer can also protect the outer peripheral wall of the abutting portion 12 from wear to some extent, which helps to prolong the service life of the pressing block 1 and reduce the replacement cost due to wear.

[0043] In this embodiment, the material of the anti-skid layer is rubber. Rubber material can provide better anti-skid effect, so that the operator can keep stable when rotating the abutting portion 12 and is not easy to slip; rubber material has good wear resistance, so that the rubber anti-skid layer is not easy to wear during long-term use; rubber material has good corrosion resistance and can remain stable in humid, greasy or corrosive environment. It should be noted that the material of the anti-skid layer can also be silica gel, thermoplastic elastomer (TPU) or anti-skid paint, which is not limited in this embodiment.

[0044] Specifically, the number of pressing assemblies is multiple, and the multiple pressing assemblies are arranged at intervals around the circumference of the piston cylinder 100. The arrangement of multiple pressing assemblies can ensure that the piston cylinder 100 is subjected to uniform pressing force in the circumferential direction, so that the piston cylinder 100 can be stably pressed on the valve body 200.

[0045] In this embodiment, as shown in Figure 1 The number of pressing assemblies is four. It should be noted that the number of pressing assemblies is determined according to actual needs, which is not limited in this embodiment.

[0046] The use of the pressing mechanism will be described in detail as follows:

[0047] The locking piece 2 is screwed with the valve body 200, the pressing block 1 is rotated to make at least part of the pressing block 1 face the boss 1001, and the boss 1001 is accommodated in the limiting gap 11 or the limiting piece abuts against the boss 1001, the locking piece 2 is screwed to fix the pressing block 1 to the valve body 200, and then the pressing block 1 is fixed to the valve body 200 to press and fix the piston cylinder 100 to the valve body 200; when the piston cylinder 100 needs to be disassembled from the valve body 200, the locking piece 2 is unscrewed, and the pressing block 1 is lifted along the Z-axis direction to make the boss 1001 disengage from the limiting gap or the limiting piece, and then the pressing block 1 is rotated to avoid the boss 1001, so that the piston cylinder 100 can be disassembled.

[0048] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clamping mechanism for clamping and fixing a piston cylinder (100) onto a valve body (200), characterized in that, The clamping mechanism includes a clamping assembly, which includes: A pressure block (1) is rotatable to switch between a first state and a second state. In the first state, at least part of the pressure block (1) is directly opposite the boss (1001) of the piston cylinder (100) along the Z-axis direction, and the pressure block (1) is able to press against the boss (1001) of the piston cylinder (100). In the second state, the pressure block (1) avoids the boss (1001) along the Z-axis direction so that the piston cylinder (100) can move along the Z-axis direction. In the first state, the locking member (2) can fix the pressure block (1) to the valve body (200) so that the pressure block (1) presses and fixes the piston cylinder (100) to the valve body (200).

2. The clamping mechanism according to claim 1, characterized in that, The locking member (2) passes through the pressure block (1) and the valve body (200) in sequence. The locking member (2) is threadedly connected to the valve body (200). The pressure block (1) can rotate around the axis of the locking member (2).

3. The clamping mechanism according to claim 2, characterized in that, The locking element (2) is a bolt.

4. The clamping mechanism according to claim 3, characterized in that, A gasket (3) is provided between the locking member (2) and the pressure block (1).

5. The clamping mechanism according to claim 2, characterized in that, The pressure block (1) has a limiting notch (11). In the first state, part of the boss (1001) is accommodated in the limiting notch (11) to restrict the rotation of the pressure block (1).

6. The clamping mechanism according to claim 2, characterized in that, The pressure block (1) is provided with a limiting member. In the first state, the limiting member can abut against the boss (1001) to restrict the rotation of the pressure block (1).

7. The clamping mechanism according to claim 1, characterized in that, The pressure block (1) includes a pressing part (12) and a supporting part (13) distributed along the Z-axis direction. The supporting part (13) is disposed on the valve body (200), and the pressing part (12) is used to press against or avoid the boss (1001).

8. The clamping mechanism according to claim 7, characterized in that, The outer peripheral wall of the pressing part (12) is provided with an anti-slip layer.

9. The clamping mechanism according to claim 8, characterized in that, The anti-slip layer is made of rubber.

10. The clamping mechanism according to any one of claims 1-9, characterized in that, The number of clamping components is multiple, and the multiple clamping components are arranged circumferentially around the piston cylinder (100).

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