Cross bag opening station

Abstract

The utility model relates to a cross-shaped bag opening station which comprises a discharging hopper, a connecting frame is arranged at the top of the discharging hopper, a bag opening mechanism is arranged in the connecting frame and comprises four bag openers, the axes of the four bag openers intersect with one another, a connecting base is arranged on the inner wall of the connecting frame, and each bag opener comprises a sliding frame. One end of each sliding frame is fixed to the connecting base, at least one linear driving mechanism and at least one sliding connecting mechanism are arranged between the sliding frames, the sliding frames are connected with sliding blocks through the linear driving mechanisms and the sliding connecting mechanisms, and the sliding blocks reciprocate relative to the sliding connecting mechanisms through the linear driving mechanisms; a bag opening blade is vertically fixed to the sliding block, and the axis of a cutting edge of the bag opening blade is obliquely arranged relative to the plane of the connecting frame. A bag hooking groove which is of an arc-shaped structure and is concave inwards relative to the axis of a cutting edge is formed between the tool nose part and the tool root part of the bag opening blade.

Description

Technical Field

[0001] The utility model relates to a cross bag opening station and belongs to the field of packaging equipment. Background Art

[0002] The current bag opening mechanism uses a reciprocating straight knife to open the bag, and the material bags are all woven with polymer materials. When the straight knife breaks the material bag, it is easy for the cutting edge of the straight knife to slide relative to the material bag and cause the blade to fall out, affecting the bag opening efficiency. It is also easy for the straight knives to exert uneven driving force on the material bag, resulting in the deviation of the material bag and the leakage of the material in the material bag to the outside of the receiving hopper. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the technical problems in the prior art and provide a cross bag opening station.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A cross bag opening station comprises: a discharge hopper, a connection frame is arranged on the top of the discharge hopper, a bag opening mechanism is arranged in the connection frame, the bag opening mechanism comprises four groups of bag openers, the axes of the four groups of bag openers intersect each other, a connection seat is arranged on the inner wall of the connection frame, the bag opener comprises a sliding frame, one end of the sliding frame is fixed to the connection seat, at least one group of linear drive mechanism and at least one group of sliding connection mechanism are arranged between the sliding frames, the sliding frame is connected to a slider through the linear drive mechanism and the sliding connection mechanism, and the slider reciprocates relative to the sliding connection mechanism through the linear drive mechanism;

[0006] A bag opening blade is vertically fixed on the slider, and the cutting edge axis of the bag opening blade is arranged inclined relative to the plane of the connecting frame; an arc-shaped hooking groove concave relative to the cutting edge axis is arranged between the tip and the root of the bag opening blade.

[0007] As a further improvement of the present invention, an isolation net with a rigid structure is arranged below the connection frame corresponding to the arrangement position of the bag opening mechanism; the isolation net can prevent the material bag from being rolled into the winding mechanism at the bottom of the discharge hopper, thereby improving safety.

[0008] As a further improvement of the present invention, the isolation net is formed by a plurality of groups of mutually crossed steel sheets. The isolation net with cross-fixed steel sheets has higher strength. Since the material bags are all of tonnage level, the isolation net with a woven structure cannot provide sufficient strength. In addition, the steel sheet structure can form a supporting rib structure in the connecting frame to enhance the strength of the connecting frame.

[0009] As a further improvement of the present utility model, a bag blocking mechanism is provided above the position of the connecting frame corresponding to the bag opening mechanism. The bag blocking mechanism includes four groups of bag blocking frames. The arrangement axis of the bag blocking frames is arranged at an angle of 45° with the arrangement axis of the bag opener. The bag blocking frame includes a bag blocking protrusion extending towards the middle of the connecting frame;

[0010] The bag blocking mechanism can further support the material bag and prevent the material bag from directly contacting the isolation net and thus blocking the isolation net.

[0011] As a further improvement of the present utility model, the bag blocking frame includes at least two groups of bag blocking rods bent in an L shape, and the bag blocking protrusion is arranged at the L-shaped bending position of the bag blocking rods.

[0012] As a further improvement of the present utility model, the bag opening blade is fixed to the slider through an adjusting frame. The adjusting frame includes a connecting plate fixed to the slider. Four long strip-shaped adjusting slots are arranged on the connecting plate. The connecting plate is fixed to the slider through bolts passing through the adjusting slots. An adjusting plate is vertically fixed on the connecting plate. Two groups of concentric arc-shaped slots are symmetrically arranged on the adjusting plate. A long strip-shaped connecting slot is arranged at the root of the bag opening blade. Two groups of bolt groups respectively passing through the two arc-shaped slots are arranged in the connecting slot. The bag opening blade and the adjusting plate are fixed to each other through the bolt groups; the adjusting slots and the arc-shaped slots can adjust the angle of the blade to ensure that when the bag opening blades are combined, the tips of the blades can form a pointed portion, improving the piercing effect on the material bag.

[0013] As a further improvement of the present utility model, the sliding frame includes two support blocks, the sliding connection mechanism includes two groups of sliding rods, the support blocks are fixedly supported by the two groups of sliding rods, the linear driving mechanism includes a lead screw, the two ends of the lead screw are rotatably connected to the support blocks, the lead screw is driven by a reduction motor arranged on one of the support blocks, and a lead screw sleeve matched with the lead screw is arranged in the slider.

[0014] The beneficial effects of the present utility model are:

[0015] The present utility model realizes bag opening through several groups of blades that can move independently of each other, can dynamically control the advancing positions of each blade, ensure that the axis of the material bag is perpendicular to the ground, reduce the possibility of the material bag overturning, and at the same time, the present utility model innovatively sets a bag hooking groove on the blade. The bag hooking groove can not only prevent the cutting position of the material bag from slipping out, but also the sharp part at the intersection between the bag hooking groove and the tip of the blade can improve the cutting efficiency of the material bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0017] Figure 1 is the top view of the present utility model;

[0018] Figure 2 is the perspective view of the present utility model.

[0019] In the figure: 1. connecting frame; 2. connecting seat; 3. slider; 4. supporting block; 5. sliding rod; 6. lead screw; 7. connecting plate; 8. adjusting plate; 9. bag-opening blade; 10. isolation net; 11. discharging hopper; 12. bag-blocking rod; 13. tip of the blade; 14. bag-hooking groove; 15. arc groove; 16. connecting groove. Specific embodiments

[0020] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.

[0021] As Figure 1 described, the present utility model is a cross bag-opening station, including: a discharging hopper, a connecting frame is arranged at the top of the discharging hopper, an isolation net formed by the vertical intersection of several steel sheets is arranged at the bottom of the inner circle of the connecting frame, a bag-opening mechanism is arranged in the connecting frame, the bag-opening mechanism includes four groups of bag-openers, the axes of the four groups of bag-openers intersect with each other, a connecting seat is arranged on the inner wall of the connecting frame, the bag-opener includes a sliding frame, the sliding frame includes two supporting blocks, one of the supporting blocks is fixed to the connecting seat, two groups of sliding rods are arranged on the supporting blocks, the supporting blocks are fixedly supported by the two groups of sliding rods, a slider is slidably connected between the two supporting blocks through the two groups of sliding rods, a lead screw is further arranged between the two supporting blocks, both ends of the lead screw are rotatably connected to the supporting blocks, the lead screw is driven by a reduction motor arranged on one of the supporting blocks, and a thread bush matched with the lead screw is arranged in the slider.

[0022] Wherein, a bag-opening blade is vertically fixed on the slider, and the axis of the cutting edge of the bag-opening blade is inclined relative to the plane of the connecting frame; a bag-hooking groove with an arc structure concave relative to the axis of the cutting edge is arranged between the tip of the bag-opening blade and the root of the blade;

[0023] The bag-opening blade is fixed to the slider through an adjusting frame, the adjusting frame includes a connecting plate fixed to the slider, four groups of long strip-shaped adjusting grooves are arranged on the connecting plate, the connecting plate is fixed to the slider through bolts penetrating the adjusting grooves, an adjusting plate is vertically fixed on the connecting plate, two groups of concentric arc grooves are symmetrically arranged on the adjusting plate in a mirror image manner, a long strip-shaped connecting groove is arranged at the root of the bag-opening blade, two groups of bolt groups respectively penetrating the two arc grooves are arranged in the connecting groove, the bag-opening blade and the adjusting plate are fixed to each other through the bolt groups, the angle and position of the bag-opening blade can be adjusted through the connecting groove and the arc grooves, and when each slider moves to the end, the tips of each bag-opening blade are in contact with each other.

[0024] Above the position where the connecting frame corresponds to the bag opening mechanism, there is a bag blocking mechanism. The bag blocking mechanism includes four groups of bag blocking frames. The arrangement axis of the bag blocking frames is arranged at an angle of 45° with the arrangement axis of the bag opener. Each bag blocking frame includes two groups of bag blocking rods bent in an L shape. The bag blocking rods extend towards the middle of the connecting frame, and the bag blocking protrusions are arranged at the L-shaped bending positions of the bag blocking rods.

[0025] During use, the material bag is moved above the connecting frame, and then through the pulley mechanism, the material bag is moved downward so that the tip of the blade contacts the material bag, and the tip is inserted into the material bag due to the self-weight of the material bag. Synchronously, in order to ensure the relative sliding between the surface of the material bag and the bag opening blade to ensure the cutting efficiency, by rotating the lead screw, the slider is driven to move the bag opening blade slowly outward. When the bottom of the material bag contacts the bag blocking rod, the bag opening blade is quickly driven so that the bottom of the material bag contacts the hook bag groove of the bag opening blade. The concave-shaped blade at the hook bag groove can prevent the material bag from slipping out relative to the bag opening blade. Even if a certain amount of slipping occurs, the sharp part at the transition position between the hook bag groove and the tip of the bag opening blade can quickly break open the material bag to ensure the bag opening effect and efficiency.

[0026] Taking the above ideal embodiments of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cross bag opening station, comprising: A discharge hopper, a connection frame is arranged on the top of the discharge hopper, and a bag opening mechanism is arranged in the connection frame, wherein the bag opening mechanism comprises four groups of bag openers, the axes of the four groups of bag openers intersect with each other, a connection seat is arranged on the inner wall of the connection frame, the bag opener comprises a sliding frame, one end of the sliding frame is fixed to the connection seat, at least one group of linear drive mechanisms and at least one group of sliding connection mechanisms are arranged between the sliding frames, the sliding frame is connected to a slider through the linear drive mechanism and the sliding connection mechanism, and the slider reciprocates relative to the sliding connection mechanism through the linear drive mechanism; A bag opening blade is vertically fixed on the slider, and the cutting edge axis of the bag opening blade is arranged inclined relative to the plane of the connecting frame; an arc-shaped hooking groove concave relative to the cutting edge axis is arranged between the tip and the root of the bag opening blade.

2. A cross bag opening station as claimed in claim 1, characterized in that: An isolation net with a rigid structure is arranged below the connection frame corresponding to the arrangement position of the bag opening mechanism.

3. A cross bag opening station as claimed in claim 2, characterized in that: The isolation net is formed by fixing a plurality of groups of mutually intersecting steel sheets.

4. A cross bag opening station as claimed in claim 1, characterized in that: A bag blocking mechanism is arranged above the connection frame corresponding to the bag opening mechanism arrangement position. The bag blocking mechanism includes four groups of bag blocking frames. The arrangement axis of the bag blocking frame is arranged at 45 degrees to the arrangement axis of the bag opener. The bag blocking frame includes a bag blocking protrusion extending toward the middle of the connection frame.

5. A cross bag opening station as claimed in claim 4, characterized in that: The bag blocking frame comprises at least two groups of bag blocking rods bent in an L shape, and the bag blocking protrusions are arranged at the L-shaped bending positions of the bag blocking rods.

6. A cross bag opening station as claimed in claim 1, characterized in that: The bag opening blade is fixed to the slider through an adjustment frame, and the adjustment frame includes a connecting plate fixed to the slider, and four groups of long strip adjustment grooves are arranged on the connecting plate. The connecting plate is fixed to the slider through bolts penetrating the adjustment grooves. An adjustment plate is vertically fixed on the connecting plate, and two groups of concentric arc grooves are arranged in mirror symmetry on the adjustment plate. A long strip connecting groove is arranged at the root of the bag opening blade, and two groups of bolt groups respectively penetrating the two arc grooves are arranged in the connecting groove. The bag opening blade and the adjustment plate are fixed to each other through the bolt group.

7. A cross bag opening station as claimed in claim 1, characterized in that: The sliding frame includes two support blocks, and the sliding connection mechanism includes two groups of sliding rods. The support blocks are fixedly supported by the two groups of sliding rods. The linear drive mechanism includes a lead screw, and both ends of the lead screw are rotatably connected to the support blocks. The lead screw is driven by a reduction motor arranged in one group of support blocks, and a thread sleeve cooperating with the lead screw is arranged in the slider.

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