Powdery raw material bag opening device

Abstract

The utility model relates to the technical field of bag opening tools, and particularly discloses a powdery raw material bag opening device which comprises a knife rest, a blade is arranged in the knife rest, a knife handle and a pressing plate are arranged at the two ends of the knife rest respectively, a knife hole matched with the blade is formed in the pressing plate, and a knife pushing mechanism is connected to the outer side of the knife handle. The push broach mechanism comprises a push handle located on one side of the broach handle, the push handle is connected with the broach handle through a spring, the two ends of the push handle are in sliding connection with the broach handle through a push plate, the end of the push plate is connected with a limiting plate matched with the broach handle, the limiting plate is connected with a push rod connected with the blade through a connecting rod, and the push rod is located in the broach rest. According to the utility model, the blade can extend out of the knife rest for cutting through the knife pushing mechanism, and after cutting is finished, the blade can be automatically stored in the knife rest for storage under the action of the spring, so that the problem that the blade is forgotten to be stored after use is solved, and the safety of personnel and the blade is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bag opening tools, in particular to a bag opening device for powdered raw materials. Background Art

[0002] Latex paint is a type of water-based paint made by adding pigments, fillers and various additives to synthetic resin emulsion as the base material. It is also called synthetic resin emulsion paint and is a type of organic paint. Latex paint is widely used in environmentally friendly paints for housing construction due to its advantages such as rapid film formation, shortened construction period, saved construction costs, excellent air permeability, environmental protection, no odor, and washability.

[0003] Since most latex paints are white or light colors based on white, titanium dioxide or lead powder (zinc barium white) are harmless to the human body, and most color pigments are also harmless to the human body. For opening bags of powdered raw materials such as titanium dioxide or lead powder, the current bag opening tool mainly uses a utility knife, which cuts the bag mouth or the middle of the bag with a utility knife. During the use of the utility knife, the blade needs to be pushed out and retracted manually. In actual operation, it is easy to forget to retract the blade after use, which not only easily causes damage to the blade head, but also has certain dangers. Utility Model Content

[0004] The utility model aims at the above-mentioned deficiencies in the prior art and provides a powdered raw material bag opening device. The blade can be extended from the blade holder for cutting through a blade pushing mechanism. After cutting, the blade can be automatically retracted into the blade holder for storage under the action of a spring, thereby solving the problem of forgetting to retract the blade after use and ensuring the safety of personnel and the blade.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A powdered raw material bag opening device comprises a knife holder, a blade is arranged in the knife holder, a knife handle and a pressure plate are respectively arranged at two ends of the knife holder, a knife hole matching with the blade is arranged on the pressure plate, a knife pushing mechanism is connected to the outer side of the knife handle, the knife pushing mechanism comprises a push handle located on one side of the knife handle, the push handle is connected to the knife handle by a spring, the two ends of the push handle are slidably connected to the knife handle by push plates, the end of the push plate is connected to a limit plate matching with the knife handle, the limit plate is connected to a push rod connected with the blade by a connecting rod, and the push rod is located in the knife holder.

[0007] Preferably, a slide groove is provided on the side wall of the handle, and a guide strip cooperating with the slide groove is provided on the inner wall of the push plate.

[0008] Preferably, a guide hole cooperating with the connecting rod is provided on the side wall of the tool holder.

[0009] Preferably, a detachable knife cover is provided on one side of the knife holder, a knife groove cooperating with the blade is provided in the knife holder, and a clearance groove cooperating with the push rod is provided on the side wall of the knife groove and the knife cover.

[0010] Preferably, a V-shaped cutting opening is provided on the side wall of the tool holder.

[0011] Preferably, one end of the pressure plate on the same side as the blade is an upturned structure, and an indicator line corresponding to the position of the blade is provided at the upturned portion.

[0012] Preferably, a hook hole is provided at one end of the blade, and a draw hook matching with the hook hole is provided at one end of the push rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can extend the blade from the blade holder for cutting through the blade pushing mechanism. After cutting, the blade can be automatically retracted into the blade holder for storage under the action of the spring, which solves the problem of forgetting to retract the blade after use and ensures the safety of personnel and blades.

[0015] 2. The utility model is provided with a pressure plate, which can prevent the knife holder from extending into the raw material bag during the cutting process to ensure the reliability of the cutting process, and can press the cutting part of the raw material bag to reduce the amount of powdered raw materials floating up at the moment of cutting.

[0016] 3. The blade of the utility model is detachable and replaceable, which is simple and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after the knife cover is removed;

[0019] Figure 3 It is a structural schematic diagram of the push knife mechanism;

[0020] Figure 4 is a schematic diagram of the structure of the tool holder;

[0021] Figure 5 It is the front view of the utility model;

[0022] In the figure: 1- knife holder; 101- cutting opening; 102- guide hole; 103- knife groove; 104- clearance groove; 2- knife handle; 3- push handle; 301- push plate; 302- limit plate; 303- guide strip; 304- connecting rod; 305- push rod; 306- pull hook; 4- spring; 5- knife cover; 6- pressure plate; 601- knife hole; 602- indicator line; 7- blade; 701- hook hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-2 As shown, a powdered raw material bag opening device comprises a knife holder 1, a blade 7 is arranged inside the knife holder 1, a knife handle 2 and a pressing plate 6 are respectively arranged at both ends of the knife holder 1, a knife hole 601 matching with the blade 7 is arranged on the pressing plate 6, and a knife pushing mechanism is connected to the outer side of the knife handle 2, such as Figure 3 As shown, the knife pushing mechanism includes a push handle 3 located on one side of the knife handle 2, the push handle 3 is connected to the knife handle 2 by a spring 4, both ends of the push handle 3 are slidably connected to the knife handle 2 by a push plate 301, the end of the push plate 301 is connected with a limit plate 302 cooperating with the knife handle 2, which can limit the position of the push handle 3 after it is reset, the limit plate 302 is connected with a push rod 305 connected to the blade 7 through a connecting rod 304, the push rod 305 is located in the knife holder 1, the push handle 3 drives the blade 7 to slide in the knife holder 1 through the push rod 305, and pushing the push handle 3 can push the head of the blade 7 out of the knife hole 601, and after releasing the push handle 3, under the action of the spring 4, the blade 7 is retracted into the knife holder 1 to ensure safety.

[0025] In addition, during the bag opening process, especially when cutting directly from the middle of the raw material bag, due to poor force control, the front end of the knife holder 1 can easily extend completely into the raw material bag, causing the powdered raw material to pour into the knife holder 1. For this reason, the utility model is provided with a pressure plate 6, which can, on the one hand, prevent the knife holder 1 from extending into the raw material bag during the cutting process, and on the other hand, press the cutting part of the raw material bag to reduce the amount of powdered raw material floating up at the moment of cutting.

[0026] One end of the pressure plate 6 on the same side as the blade is an upturned structure, and an indicator line 602 corresponding to the position of the blade 7 is provided at the upturned portion, and the cutting position can be controlled by the indicator line 602.

[0027] The side wall of the knife handle 2 is provided with a slide groove, and the inner wall of the push plate 301 is provided with a guide strip 303 that cooperates with the slide groove to ensure that the push plate 301 can only slide up and down with the knife handle 2. The side wall of the knife holder 1 is provided with a guide hole 102 that cooperates with the connecting rod 304.

[0028] In order to realize the replacement of the blade 7, a detachable blade cover 5 is provided on one side of the blade holder 1, and the blade cover 5 is connected to the blade holder 1 by screws. Figure 4As shown, a knife groove 103 cooperating with the blade 7 is provided in the knife holder 1, and a clearance groove 104 cooperating with the push rod 305 is provided on the side wall of the knife groove 103 and the knife cover 5.

[0029] A hook hole 701 is provided at one end of the blade 7 , and a draw hook 306 matching with the hook hole 701 is provided at one end of the push rod 305 .

[0030] A V-shaped cutting opening 101 is provided on the side wall of the knife holder 1. When opening the end of the raw material bag, the end of the raw material can be directly placed in the cutting opening 101, and the knife holder 1 can be pushed to cut the raw material bag with the help of the internal blade 7.

[0031] When opening from the end of the raw material bag, the raw material bag stands up, pulls the upper end of the raw material bag, places one side of the upper end of the raw material bag in the cutting opening 101, pushes the knife holder 1, and cuts the end of the raw material bag horizontally;

[0032] like Figure 5 As shown, when the middle of the raw material bag needs to be cut, the raw material bag is squared, the knife handle 2 and the push handle 3 are held by hand, the blade 7 is extended from the knife hole 601, the pressing plate 6 is pressed on the raw material bag, and the knife holder 1 is moved for cutting.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A powdered raw material bag opening device, comprising a knife holder, wherein a blade is provided in the knife holder, characterized in that: A knife handle and a pressure plate are respectively provided at both ends of the knife holder, a knife hole cooperating with the blade is provided on the pressure plate, a knife pushing mechanism is connected to the outer side of the knife handle, the knife pushing mechanism includes a push handle located on one side of the knife handle, the push handle is connected to the knife handle by a spring, the two ends of the push handle are slidably connected to the knife handle by a push plate, the end of the push plate is connected to a limit plate cooperating with the knife handle, the limit plate is connected to a push rod connected to the blade through a connecting rod, and the push rod is located in the knife holder.

2. A powdery raw material bag opening device as claimed in claim 1, characterized in that: A sliding groove is arranged on the side wall of the knife handle, and a guide strip matched with the sliding groove is arranged on the inner wall of the push plate.

3. A powdery raw material bag opening device as claimed in claim 1, characterized in that: A guide hole matched with the connecting rod is provided on the side wall of the tool holder.

4. A powdery raw material bag opening device as claimed in claim 1, characterized in that: A detachable knife cover is arranged on one side of the knife holder, a knife groove matched with the blade is arranged in the knife holder, and a clearance groove matched with the push rod is arranged on the side wall of the knife groove and the knife cover.

5. A powdery raw material bag opening device as claimed in claim 1, characterized in that: A V-shaped cutting opening is arranged on the side wall of the knife holder.

6. A powdery raw material bag opening device as claimed in claim 1, characterized in that: One end of the pressure plate on the same side as the blade is an upturned structure, and an indication line corresponding to the position of the blade is provided at the upturned portion.

7. A powdery raw material bag opening device as claimed in claim 4, characterized in that: One end of the blade is provided with a hook hole, and one end of the push rod is provided with a draw hook matched with the hook hole.

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