Needle protection structure of liquid filling machine

Abstract

The utility model discloses a needle protection structure of a liquid filling machine, and relates to the technical field of liquid filling equipment, the needle protection structure comprises a needle tube, a fixing sleeve is fixed on the outer wall of the needle tube, the needle protection structure also comprises a protection mechanism arranged on the fixing sleeve, and the protection mechanism is used for protecting the needle part of the needle tube and adjusting the position of a filling bottle opening; the protection mechanism comprises a protection unit and a positioning unit; the protection unit is used for protecting the needle head part of the needle tube; the positioning unit is used for adjusting the position of a filling bottle opening. The protection mechanism is arranged, the position of the needle head of the needle tube is protected through the protection sleeve, when a bottle body needing to be injected is staggered, the needle head can be aligned with a bottle opening under the thrust of the guide sleeve and the positioning block, the needle head is prevented from making contact with the filled bottle body in the injection process, the needle head is prevented from being damaged, and the purpose of protecting the needle head is achieved; and the service life of the needle head is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filling equipment, in particular to a needle protection structure of a liquid filling machine. Background Art

[0002] Liquid filling machines are important equipment in modern production. They can quickly and accurately fill liquid products into various containers and are widely used in beverages, medicines, daily chemicals and other fields.

[0003] When existing machines fill liquid materials, they generally move the filling bottle under the needle through an indirect conveyor belt, drive the needle downward, extend the needle into the interior of the filling bottle, and then fill it. After the filling is completed, the filling bottle is capped. However, during the injection filling process, if the filling bottle mouth deviates, not only the needle cannot accurately inject into the filling bottle, but the needle may even contact the filling bottle during the descent process, causing the needle to be damaged due to collision. Therefore, the utility model proposes a needle protection structure for a liquid filling machine. Utility Model Content

[0004] The purpose of the present utility model is to provide a needle protection structure for a liquid filling machine in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a needle protection structure for a liquid filling machine, comprising a needle tube, a fixed sleeve fixed to the outer wall of the needle tube, and a protection mechanism disposed on the fixed sleeve, the protection mechanism being used to protect the needle portion of the needle tube and adjust the position of the filling bottle mouth;

[0006] The protection mechanism includes a protection unit and a positioning unit;

[0007] The protection unit is used to protect the needle part of the needle tube;

[0008] The positioning unit is used to adjust the position of the filling bottle mouth.

[0009] As a further solution of the present invention: the protection unit includes a protection sleeve and a spring;

[0010] The protective sleeve is vertically slidably mounted on the bottom end of the inner wall of the fixed sleeve and extends into the inner cavity of the fixed sleeve. The protective sleeve is used to protect the needle tube;

[0011] The two ends of the spring are respectively clamped on the top of the protective sleeve and the top of the inner cavity of the fixing sleeve. The spring is used to provide a reset elastic force for the vertical movement of the protective sleeve.

[0012] As a further solution of the present invention: the positioning unit includes a guide sleeve, a fixing rod, a positioning block, a guide groove, and a guide rod;

[0013] The guide sleeve is integrally formed at the bottom end of the protective sleeve, and is used to provide guidance for the entry of the filling bottle mouth;

[0014] The fixing rod is fixed to the bottom end of the fixing sleeve and passes through the guide sleeve to the inner cavity of the guide sleeve;

[0015] The positioning block is axially slidably installed in the inner cavity of the guide sleeve, and the positioning block in the moving state is used to provide an extrusion guide for the filling bottle mouth;

[0016] The guide groove is provided on the inner side of the positioning block, and is used to provide guidance for the movement of the guide rod;

[0017] The guide rod is fixed on the outer wall of the fixing rod and extends to the inner cavity of the guide groove. The guide rod is used to provide an extrusion thrust for the axial movement of the positioning block.

[0018] As a further solution of the present invention: the guide groove is arranged on the inner side of the positioning block in an inclined state, and the inner cavity of the guide groove is consistent with the outer wall of the guide rod.

[0019] As a further solution of the present invention: the number of the positioning blocks is three, and the three positioning blocks are circumferentially distributed in the inner cavity of the guide sleeve.

[0020] As a further solution of the present invention: the inner bottom of the guide sleeve is in a bell-mouth shape.

[0021] As a further solution of the present invention: the outer wall of the protective sleeve is in a "T"-shaped structure as a whole, and the inner cavity of the fixed sleeve is formed with a movable groove for the protective sleeve to move vertically.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By setting up a protection mechanism, the position of the needle tip of the syringe is protected by a protective sleeve. When the bottle to be injected is misplaced, the needle tip can be aligned with the bottle mouth under the thrust of the guide sleeve and the positioning block, avoiding the needle tip from contacting the filling bottle during the injection process, causing damage to the needle tip, thereby achieving the purpose of protecting the needle tip and further improving the service life of the needle tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 This is a cross-sectional view of the internal structure of the fixing sleeve and the protective mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the installation structure of the fixing rod, guide rod and positioning block of the utility model.

[0027] In the figure: 1, needle tube; 2, fixing sleeve; 3, protective mechanism; 301, protective sleeve; 302, guide sleeve; 303, spring; 304, fixing rod; 305, positioning block; 306, guide groove; 307, guide rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 3 In an embodiment of the utility model, a needle protection structure for a liquid filling machine includes a needle tube 1, a fixed sleeve 2 is fixed to the outer wall of the needle tube 1, and a protection mechanism 3 is provided on the fixed sleeve 2. The protection mechanism 3 is used to protect the needle part of the needle tube 1 and adjust the position of the filling bottle mouth;

[0030] The protection mechanism 3 includes a protection unit and a positioning unit;

[0031] The protection unit is used to protect the needle part of the needle tube 1;

[0032] The positioning unit is used to adjust the position of the filling bottle mouth;

[0033] The protection unit includes a protection sleeve 301 and a spring 303;

[0034] The protective sleeve 301 is vertically slidably mounted on the bottom end of the inner wall of the fixed sleeve 2 and extends into the inner cavity of the fixed sleeve 2. The protective sleeve 301 is used to protect the needle tube 1;

[0035] The two ends of the spring 303 are respectively clamped on the top of the protective sleeve 301 and the top of the inner cavity of the fixed sleeve 2. The spring 303 is used to provide a restoring elastic force for the vertical movement of the protective sleeve 301.

[0036] The positioning unit includes a guide sleeve 302, a fixing rod 304, a positioning block 305, a guide groove 306, and a guide rod 307;

[0037] The guide sleeve 302 is integrally formed at the bottom end of the protective sleeve 301 and is used to provide guidance for the entry of the filling bottle mouth;

[0038] The fixing rod 304 is fixed to the bottom end of the fixing sleeve 2 and passes through the guide sleeve 302 to the inner cavity of the guide sleeve 302;

[0039] The positioning block 305 is axially slidably installed in the inner cavity of the guide sleeve 302. The positioning block 305 in the moving state is used to provide an extrusion guide for the filling bottle mouth;

[0040] The guide groove 306 is provided on the inner side of the positioning block 305 and is used to provide guidance for the movement of the guide rod 307;

[0041] The guide rod 307 is fixed to the outer wall of the fixing rod 304 and extends to the inner cavity of the guide groove 306 . The guide rod 307 is used to provide an extrusion thrust for the axial movement of the positioning block 305 .

[0042] In this embodiment: through this structure, when filling the filling bottle, when the bottle mouth of the filling bottle is misaligned with the needle of the needle tube 1 moving downward, the inner side of the guide sleeve 302 located below the needle will first partially contact the outer wall of the filling bottle. Due to the partial contact of the bottle mouth, the force on the filling bottle is unbalanced, causing the top bottle mouth of the filling bottle to move along the inner side of the bottom end of the guide sleeve 302, causing the filling bottle as a whole to tilt until the bottle mouth and the needle are in the same vertical line. At the same time, the guide sleeve 302 moving synchronously with the needle tube 1 will be squeezed by the filling bottle and move upward. The upward movement of the guide sleeve 302 will synchronously drive the protective sleeve 301 to move, and the protective sleeve 301 The movement will give the spring 303 an extruding force, causing the needle to gradually enter the bottle mouth of the filling bottle, and the moving guide sleeve 302 will also move along the outer surface of the fixed rod 304. The guide rod 307 on the outer wall of the fixed rod 304 will give an extruding force to the inner cavity of the guide groove 306, so that the positioning block 305 moves axially along the inner cavity of the guide groove 306 under the extrusion of the guide rod 307 and contacts the bottle mouth of the filling bottle. The filling bottle in a tilted state will also be pushed by the positioning block 305, causing it to be straightened and reset to a vertical state from the tilted state, avoiding the situation where the filling bottle and the needle are misaligned and causing damage to the needle, thereby further improving the service life of the needle.

[0043] Please refer to Figure 1-Figure 3 The guide groove 306 is arranged in an inclined state on the inner side of the positioning block 305, and the inner cavity of the guide groove 306 coincides with the outer wall of the guide rod 307. There are three positioning blocks 305, and the three positioning blocks 305 are circumferentially distributed in the inner cavity of the guide sleeve 302. The inner bottom of the guide sleeve 302 is in a trumpet-shaped state.

[0044] In this embodiment, this structure can provide tilting guidance for the filling bottle through the bell mouth on the inner side of the bottom end of the guide sleeve 302, and at the same time provide thrust for the filling bottle to return to its original position during the movement of the guide sleeve 302.

[0045] Please refer to Figure 1-Figure 3 The outer wall of the protective sleeve 301 is in a T-shaped structure as a whole, and the inner cavity of the fixed sleeve 2 is formed with a movable groove for the protective sleeve 301 to move vertically.

[0046] In this embodiment, this structure can provide guidance for the movement of the protective sleeve 301 when the protective sleeve 301 is forced to move upward.

[0047] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A needle protection structure for a liquid filling machine, comprising a needle tube (1), wherein a fixing sleeve (2) is fixed to the outer wall of the needle tube (1), characterized in that: It also includes a protective mechanism (3) disposed on the fixed sleeve (2), the protective mechanism (3) being used to protect the needle portion of the needle tube (1) and to adjust the position of the filling bottle mouth; The protection mechanism (3) comprises a protection unit and a positioning unit; The protection unit is used to protect the needle part of the needle tube (1); The positioning unit is used to adjust the position of the filling bottle mouth; The protection unit comprises a protection sleeve (301) and a spring (303); The protective sleeve (301) is vertically slidably mounted on the bottom end of the inner wall of the fixed sleeve (2) and extends to the inner cavity of the fixed sleeve (2). The protective sleeve (301) is used to protect the needle tube (1); The two ends of the spring (303) are respectively clamped on the top of the protective sleeve (301) and the top of the inner cavity of the fixed sleeve (2), and the spring (303) is used to provide a reset elastic force for the vertical movement of the protective sleeve (301); The positioning unit comprises a guide sleeve (302), a fixing rod (304), a positioning block (305), a guide groove (306), and a guide rod (307); The guide sleeve (302) is integrally formed at the bottom end of the protective sleeve (301), and the guide sleeve (302) is used to provide guidance for the entry of the filling bottle mouth; The fixing rod (304) is fixed to the bottom end of the fixing sleeve (2) and passes through the guide sleeve (302) to the inner cavity of the guide sleeve (302); The positioning block (305) is axially slidably mounted in the inner cavity of the guide sleeve (302), and the positioning block (305) in the moving state is used to provide an extrusion guide for the filling bottle mouth; The guide groove (306) is provided on the inner side of the positioning block (305), and the guide groove (306) is used to provide guidance for the movement of the guide rod (307); The guide rod (307) is fixed to the outer wall of the fixing rod (304), and the guide rod (307) extends to the inner cavity of the guide groove (306). The guide rod (307) is used to provide an extrusion thrust for the axial movement of the positioning block (305).

2. A liquid filling machine needle protection structure according to claim 1, characterized in that: The guide groove (306) is arranged in an inclined state on the inner side of the positioning block (305), and the inner cavity of the guide groove (306) is consistent with the outer wall of the guide rod (307).

3. The needle protection structure of a liquid filling machine according to claim 1, characterized in that: The number of the positioning blocks (305) is three, and the three positioning blocks (305) are circumferentially distributed in the inner cavity of the guide sleeve (302).

4. The needle protection structure of a liquid filling machine according to claim 1, characterized in that: The inner bottom of the guide sleeve (302) is in a bell-mouth shape.

5. The needle protection structure of a liquid filling machine according to claim 1, characterized in that: The outer wall of the protective sleeve (301) is in a T-shaped structure as a whole, and the inner cavity of the fixed sleeve (2) is formed with a movable groove for the protective sleeve (301) to move vertically.

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