Plastic bottle cap taking device

Abstract

The utility model discloses a cap taking device for a plastic bottle cap, which comprises a friction block, a fixed end cap matched with the friction block, a cap screwing body seat, a spring seat, a spring, a clutch sleeve, a shaft sleeve and a central shaft positioned in the middle, and a groove is formed at the orifice of the inner hole of the friction block. According to the cap taking device for the plastic bottle cap, the problems that the cap screwing quality is poor, the utilization rate of the friction block is low, and the plastic cap is prone to falling off during high-speed cap screwing can be solved, so that the production efficiency is improved, the resource utilization rate is increased, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottle cap technical field, especially a kind of cap taking device of plastic bottle cap. BACKGROUND

[0002] The existing filling cap screwing equipment, its cap screwing mechanism is composed of polyurethane friction block, friction block fixed end cover, cap screwing body seat, spring seat, spring, clutch cover and the like, utilizes the shrinkability and friction resistance of polyurethane material, realizes taking cap and cap screwing.Therefore, the cap screwing quality is directly affected by the cap containing depth of polyurethane friction block, the friction between plastic cap and fixed end cover, the inclination of taking cap.The existing cap screwing mechanism mainly has the following defects: 1, in the rotating process of cap screwing mechanism, taking cap is controlled to move downward by cam, and the taking cap process is pre-oriented by the friction block fixed end cover of metal material, and there is collision between metal material and plastic cap in the orientation process, plastic cap is easy to be damaged, and the orientation success rate is not high;2, the cap taking depth of polyurethane friction block is not enough, and cap is easy to fall off when the equipment runs at high speed, and there are many defective products that have not been capped, and it is a waste;3, the friction between polyurethane friction block and plastic cap is insufficient, and it is easy to slide in the cap screwing process, which affects the cap screwing quality.4, polyurethane friction block is used on one side, and the utilization rate is not high.Therefore, how to further improve the existing cap screwing mechanism is a technical problem to be solved by the person skilled in the art. CONTENT OF UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides a kind of cap taking device of plastic bottle cap, which can solve the problems of poor cap screwing quality, low utilization rate of friction block, plastic cap easy to fall off when high-speed cap screwing, thereby improving production efficiency, improving resource utilization rate and reducing production cost.

[0004] The technical scheme provided by the utility model is as follows:

[0005] A kind of cap taking device of plastic bottle cap, including sequentially connected friction block, fixed end cover cooperated with friction block, cap screwing body seat, spring seat, spring, clutch cover, shaft sleeve and center shaft located in middle part, one step is respectively arranged on the outer periphery of the upper and lower bottom surfaces of the friction block, and bevel is arranged at the orifice of the inner hole of the friction block.

[0006] Preferably, the bevel is arranged at the upper and lower ends of the orifice of the inner hole of the friction block.

[0007] Preferably, the inclination angle of the bevel is 45°.

[0008] Preferably, the height of the bevel is 1.5-2.5mm, and the specific height needs to be designed in combination with the size of plastic cap, cap screwing head and the like.

[0009] Preferably, the thickness of the lower base portion of the fixed end cover is 1-1.5mm, and the specific thickness needs to be designed in combination with the size of the cap head, as long as it is slightly lower than the step of the friction block, if the step height of the friction block is designed as 1.5mm, the thickness of the fixed end cover is designed as 1mm, but preferably not less than 1mm, otherwise it will affect the strength of the fixed end cover and thus affect the service life.

[0010] Preferably, the opening diameter of the fixed end cover is consistent with the outer diameter of the step on the friction block.

[0011] Preferably, the outer diameter of the friction block and the cap body seat are connected in an interference fit manner, and the interference amount is 0.03-0.05mm.

[0012] Preferably, the outer diameter of the friction block and the bottle cap are connected in an interference fit manner, and the interference amount is 0.05-0.1mm.

[0013] The plastic bottle cap taking device of the utility model has the following advantages compared with the prior art:

[0014] The plastic bottle cap taking device of the utility model improves the structure of the friction block and the fixed end cover, can guide through the friction block, reduces the damage rate of the plastic cap, clearly defines the interference amount, ensures that the friction between the parts is appropriate, reduces the plastic cap drop rate, improves the cap quality, the step and the bevel can make the friction block be used on both sides, and further improves the utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments in the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0016] Fig. 1 It is a structure schematic view of the plastic bottle cap taking device in the embodiment of the utility model.

[0017] Fig. 2 It is a structure schematic view of the friction block in the embodiment of the utility model.

[0018] Fig. 3 It is a structure schematic view of the fixed end cover in the embodiment of the utility model.

[0019] Reference signs:

[0020] 1, friction block; 11, step; 12, bevel; 2, fixed end cover; 21, base portion; 3, cap body seat; 4, spring seat; 5, spring; 6, clutch cover; 7, shaft sleeve; 8, central shaft. DETAILED DESCRIPTION

[0021] In order to make the technical personnel in the art better understand the technical solutions in the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary technical personnel in the art without creative labor belong to the scope of protection of the utility model.

[0022] As shown in Figs. 1-3 The utility model embodiment provides a kind of cap taking device of plastic bottle cap, including the friction block 1 of connection in turn, with the fixed end cover 2 of cooperation of friction block 1, cap body seat 3, spring seat 4, spring 5, clutch cover 6, shaft sleeve 7 and central shaft 8 in middle portion, the structure and connection mode of cap body seat 3, spring seat 4, spring 5, clutch cover 6, shaft sleeve 7 and central shaft 8 in middle portion are same with the cap mechanism in prior art, each be equipped with a step 11 on the outer periphery of the upper and lower bottom surface of friction block 1, be equipped with bevel 12 at the orifice of the inner hole of friction block 1, slightly protrude fixed end port with friction block 1, can increase the effective depth of cover of 1.

[0023] In the embodiment, bevel 12 is arranged at the upper and lower ends of the orifice of the inner hole of friction block 1, the inclination angle of bevel 12 is 45 °, the height of bevel 12 is 2mm, and the height of bevel 12 is designed according to the size of friction block 1 and plastic cap. Friction block 1 is used on both sides, prolongs service life, improves the success rate of cap taking of cap head and prevents the falling of plastic during the process of rotating cap.

[0024] In the embodiment, the thickness of the lower base portion 21 of the fixed end cover 2 is 1.5mm (used with the step 11 of 1.5mm on the outer periphery of friction block 1), the thickness of the base portion 21 is determined according to the height of the step 11 of friction block 1, and the thickness of the base portion 21 is slightly lower than or level with the height of the step 12. The fixed end cover 2 is made of stainless steel. The opening diameter of the fixed end cover 2 is 40mm, which is consistent with the outer diameter of the step 11 on the friction block 1. In actual operation process, the opening diameter of the fixed end cover 2 can be adjusted according to the size of plastic cap and the size of cap main body. The opening diameter of the fixed end cover 2 is only slightly larger than the size of the protruding step 11 of the friction block 1, and the chamfer of the edge of the fixed end cover in the prior art (as shown in Fig. 3 ) is cancelled, so that it can be used with the friction block 1.

[0025] The cap taking device of the plastic bottle cap of the embodiment mainly improves the structure of the friction block 1 and the fixed end cap 2 in the existing cap screwing mechanism, so as to solve the problems of poor cap screwing quality, low utilization rate of the friction block, and easy falling of the plastic cap during high-speed cap screwing.

[0026] In the embodiment, the outer diameter of the friction block 1 is connected with the cap screwing body seat 3 in the interference fit mode, the interference amount is 0.03-0.05 mm, the outer diameter of the friction block 1 is connected with the bottle cap in the interference fit mode, and the interference amount is 0.05-0.1 mm, so as to increase the friction force between the polyurethane material friction block 1 and the plastic cap.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will accord with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic bottle cap taking device, comprising a friction block (1), a fixed end cap (2) matched with the friction block (1), a cap body seat (3), a spring seat (4), a spring (5), a clutch cover (6), a shaft cover (7) and a center shaft (8) in the middle, which are connected in sequence, characterized in that, The friction block (1) is provided with a step (11) on the outer periphery of the upper and lower bottom surfaces, and a bevel (12) is arranged at the orifice of the inner hole of the friction block (1).

2. The cap unscrambling apparatus of claim 1 wherein, The bevel (12) is arranged at the upper and lower ends of the orifice of the inner hole of the friction block (1).

3. The cap removing device for plastic bottle caps according to claim 1, wherein The inclination angle of the bevel (12) is 45°.

4. The cap removing device for plastic bottle caps according to claim 3, wherein The height of the bevel (12) is 1.5-2.5 mm.

5. The cap-pulling device of a plastic bottle cap according to any one of claims 1 to 4, characterized in that, The thickness of the lower base portion (21) of the fixed end cover (2) is 1-1.5 mm.

6. The cap-pulling device of a plastic bottle cap according to any one of claims 1 to 4, characterized in that, The diameter of the opening of the fixed end cover (2) is consistent with the outer diameter of the step (11) on the friction block (1).

7. The cap-pulling device of a plastic bottle cap according to any one of claims 1 to 4, characterized in that, The outer diameter of the friction block (1) and the screw cap body seat (3) are connected in an interference fit manner, and the interference amount is 0.03-0.05 mm.

8. The cap-pulling device of a plastic bottle cap according to any one of claims 1 to 4, characterized in that, The outer diameter of the friction block (1) and the bottle cap are connected in an interference fit manner, and the interference amount is 0.05-0.1 mm.

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