CN211917834U

CN211917834U - Carton forming device

Info

Publication number: CN211917834U
Application number: CN201922368625.4U
Authority: CN
Inventors: 郑余钱
Original assignee: Individual
Current assignee: Pujiang County Cloud Ring Lock Industry Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-11-13
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a work piece packing field especially relates to a carton forming device. A carton forming device is characterized in that: the device comprises a rack, and a station platform, a pressing head assembly, a first lateral pressing mechanism and a second lateral pressing mechanism which are arranged on the rack; the carton forming device can fold the bottom plate a, the front side plate b, the rear side plate b, the left side plate c, the right side plate c, the first tongue plate d and the second tongue plate e, which are recorded in the background technology, into a box body, so that mechanical and automatic carton forming is realized, and the carton forming efficiency is improved.

Description

Carton forming device

Technical Field

The utility model relates to a work piece packing field especially relates to a carton forming device.

Background

The workpieces need to be packaged after being processed, so that the products can be conveniently moved and transported and sold later. In the traditional scheme, the packaging equipment generally needs a producer to manually place and package the workpiece and the box body, so that the labor intensity of the processing of the producer is increased, the packaging efficiency of the workpiece is also reduced, the defect that the clamping piece is viscous or cannot rapidly package the workpiece is easily caused by the conventional packaging machinery, and the difficulty of packaging and processing the workpiece by the producer is greatly increased. Based on the defects of manual packaging, the invention patent application with the application number of '2019103977779' discloses automatic box packaging equipment, which comprises a rack, a paper box taking device, a box opening device, a box packaging conveying device and a sealing device, wherein the paper box taking device, the box opening device, the box packaging conveying device and the sealing device are arranged on the rack; the carton taking device is used for feeding cartons in a flat state and conveying the cartons to the carton opening device, the carton opening device is used for opening the cartons in the flat state to form a three-dimensional box, the boxing device is used for feeding workpieces into the three-dimensional box, the box conveying device is used for conveying the three-dimensional box body along a specific track, and the sealing device is used for pressing the box cover into the box. This automatic change box-packed equipment can directly adopt the carton under the flat state to carry out box-packed, has the advantage that promotes box-packed efficiency, degree of automation is high.

The proposal completes the box packing of a single workpiece; however, in the case of such packaged products, a plurality of products (e.g., 8 to 12) are packaged in a large carton as a box, and are sold in units of boxes when shipped from a business or distributed in the market, and are sold individually only when purchased by a consumer. The paper box for boxing shown in fig. 1 comprises a box body 71 and a box cover 72 arranged on the box body, wherein a box cavity 73 is formed in the box body, products are stacked in the box cavity during boxing, and then the box cover is covered. The carton shown in fig. 1 is constructed by folding the paperboard as shown in fig. 2 because of the convenience of transportation of the paperboard. As shown in the figure, the paperboard comprises a bottom plate a, a top plate f, a front side plate b, a rear side plate b, a left side plate c and a right side plate c, wherein both sides of the front side plate b and the rear side plate b are provided with first tongue plates d, and the upper ends of the left side plate c and the right side plate c are provided with second tongue plates e; the front side plate b, the rear side plate b, the left side plate c, the right side plate c, the first tongue plate d and the second tongue plate e are folded into the box body, the top plate f is provided with third tongue plates g except the edge connected with the rear side plate b, and the box cover is folded between the top plate f and the third tongue plates g on the three sides of the top plate f. As described above, since the cardboard shown in fig. 2 is convenient for transportation, the cardboard shown in fig. 2 is purchased by enterprises at present. Before the products are packed into the box, the front and rear side plates b, the left and right side plates c, the first tongue plate d and the second tongue plate e need to be folded into the box body, and then the products can be packed into the box cavity of the box body. However, at present, the work is mostly finished manually, the workload is large, and a plurality of folding steps are required to be finished; the work efficiency is low, and the improvement of enterprise output is not facilitated.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a carton forming device, which can fold the bottom plate a, the front and rear side plates b, the left and right side plates c, the first tongue plate d and the second tongue plate e, which are recorded in the above background art, into a box body, thereby realizing mechanical and automatic carton forming, and being beneficial to improving carton forming efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a carton forming device is characterized in that: the device comprises a rack, and a station platform, a pressing head assembly, a first lateral pressing mechanism and a second lateral pressing mechanism which are arranged on the rack;

the station platform is used for placing a bottom plate a of the paper box;

the first side pressing mechanisms are positioned on the front side and the rear side of the station platform and comprise first side pressing plates and first tongue depressors arranged on the first side pressing plates; the first side pressing plate can longitudinally lift and bend the front side plate b and the rear side plate b of the paper box from the lower part of the station table; the first tongue plate d of the paper box can be bent in the movement process of the first tongue plate;

the second side pressing mechanisms are positioned on the left side and the right side of the station table and comprise second side pressing plates and second tongue depressors arranged above the second side pressing plates; the second side pressing plate can longitudinally lift and bend the left side plate c and the right side plate c of the paper box from the lower part of the station table, transversely move and press the left side plate c and the right side plate c of the paper box, and the second tongue depressor can move and bend the second tongue depressor e of the paper box;

and the pressing head assembly is positioned above the station table, can longitudinally press the bottom plate a of the fixed paper box on the station table, and can bend the second tongue plate e of the paper box again after the second tongue plate e is bent by the second tongue plate.

The utility model adopts the above technical scheme, this technical scheme relates to a carton forming device, and the main function is through mechanized action with the bottom plate an of recording in the above-mentioned background art, around curb plate b, about curb plate c, first hyoplastron d and second hyoplastron e fold into the box body. The paper box forming device comprises a station table, a pressing head assembly, a first side pressing mechanism and a second side pressing mechanism; the folding steps of the carton forming device are as follows:

1, firstly, aligning a bottom plate a of a fully unfolded paperboard to a station table for placement,

and 2, the pressing head assembly is longitudinally pressed on the station table, and the bottom plate a of the paper box is clamped and fixed, so that the paper board is fixed and cannot be dislocated.

3, a first side pressing plate in the first side pressing mechanism is longitudinally lifted from the lower part of the station table, so that front and rear side plates b of the paperboard are bent upwards;

4, sequentially bending the first tongue plates d forwards and backwards by the first tongue plates in the first side pressing mechanisms at the front side and the rear side;

5, a second side pressing plate in the second side pressing mechanism is longitudinally lifted from the lower part of the station table, so that the left side plate c and the right side plate c of the paperboard are bent upwards; the left side plate c and the right side plate c are positioned at the outer side of the first tongue plate d;

6, the pressing head assembly moves upwards and retreats, and a second tongue depressor in the second side pressing mechanism can move to bend a second tongue depressor e of the paper box inwards;

7, moving the pressing head assembly downwards again, and turning over the second tongue plate e downwards again to enable the left side plate c, the right side plate c and the second tongue plate e on the left side plate c to be turned over and wrap the first tongue plate d;

8, a second side pressing plate in the second side pressing mechanism transversely moves to press the left side plate c and the right side plate c of the paper box, so that creases are formed between the lower ends of the left side plate c and the right side plate c and between the second tongue plate e and the left side plate c and the right side plate c, and the overall shape of the box body is finished;

9, the first tongue depressor in the first side pressing mechanism is withdrawn from the position between the left side plate and the right side plate of the box body

And 10, resetting the pressing head assembly, the first lateral pressing mechanism and the second lateral pressing mechanism.

Based on the specific structure of the scheme, the front and rear side plates b, the left and right side plates c, the first tongue plate d and the second tongue plate e recorded in the background technology can be folded into the box body by combining the execution steps, so that mechanical and automatic carton forming is realized, and the carton forming efficiency is favorably improved.

Preferably, the first tongue depressor is a thin flat plate and can transversely move to bend the first tongue plate d of the carton.

Preferably, the left end and the right end of the first side pressing plate are provided with a first tongue depressor in a sliding manner or in a penetrating manner, and the transverse moving direction of the first tongue depressor is perpendicular to the first side pressing plate. In the technical scheme, after the first tongue depressor moves transversely to bend the first tongue depressor d of the paper box, the first tongue depressor is not directly withdrawn, but the state of the first tongue depressor d is maintained through the first tongue depressor; so that the paper box needs to be withdrawn from the left and right side plates of the box body after the integral forming of the paper box. Therefore, in this scheme, on one hand, the first tongue depressor needs to be a thin flat plate, so that when creases are formed between the lower ends of the left and right side plates c and the second tongue plate e and the left and right side plates c in step 8, the internal first tongue depressor does not affect the crease positions; on the other hand, the transverse moving direction of the first tongue depressor is required to be perpendicular to the first side pressure plate, so that the first tongue depressor can smoothly exit in the step 9.

Preferably, the first lateral pressing mechanism comprises a first lifting pair arranged on the frame, and the first lateral pressing plate is arranged on the first lifting pair; and a first tongue pressing cylinder is fixed on the first side pressing plate and drives the first tongue pressing plate to move transversely.

Preferably, the second lateral pressing mechanism comprises a second lifting pair and a pressing cylinder arranged on the second lifting pair, and the second lateral pressing plate is connected to the output end of the pressing cylinder; the second lifting pair drives the second side pressing plate to be longitudinally lifted and bent from the lower side of the station table, and the pressing cylinder drives the second side pressing plate to transversely move to press the left side plate c and the right side plate c of the paper box.

Preferably, the second lateral pressing mechanism comprises a second tongue pressing cylinder arranged on the second lifting pair, and the output end of the second tongue pressing cylinder is directly or indirectly connected to the second tongue pressing plate.

Preferably, the output end of the second tongue depressing cylinder is connected to one end of a swing rod, the middle of the swing rod is hinged, and the other end of the swing rod is connected to the second tongue depressing plate. In the technical scheme, the second tongue depressor cylinder drives the swing rod to swing along the hinge point at the middle part of the swing rod when outputting, and the other end of the swing rod drives the second tongue depressor to move, so that the second tongue depressor can bend the second tongue depressor e of the paper box.

Preferably, the upper end surface of the first side pressing plate and the upper end surface of the second tongue pressing plate are provided with inclined surfaces inclined towards the paper box pressing direction. As described above, in step 3, the first side pressing plate in the first side pressing mechanism is longitudinally lifted from the lower part of the station table, so that the front side plate b and the rear side plate b of the paperboard are bent upwards; in the step 5, a second side pressing plate in the second side pressing mechanism is longitudinally lifted from the lower part of the station table, so that the left side plate c and the right side plate c of the paperboard are bent upwards. Therefore, the upper end surface of the first side pressing plate and the upper end surface of the second tongue pressing plate directly act on the front and rear side plates b and the left and right side plates c, creases are formed at the lower ends of the front and rear side plates b and the lower ends of the left and right side plates c when the tongue pressing plates move upwards, the creases are set to be inclined surfaces, the front and rear side plates b and the left and right side plates c are contacted through the inclined surfaces in the bending process, and the paper box abrasion possibly caused by the adoption of end corners is avoided.

Preferably, the rack comprises a rack bottom plate and a bracket arranged on the rack bottom plate; the pressing head assembly comprises a sliding seat longitudinally arranged on the support in a sliding mode, a pressing air cylinder driving the sliding seat to slide relative to the support, and a pressing head arranged on the sliding seat.

Preferably, the pressing head comprises a pressing bottom plate and pressing side plates arranged on the left side and the right side of the pressing bottom plate; the pressing bottom plate and the station platform clamp the bottom plate a of the paper box correspondingly, and the pressing side plate and the second side pressing plate clamp the left side plate c and the right side plate c of the paper box correspondingly. In the technical scheme, the pressing head assembly has two functions; firstly, clamping and fixing the bottom plate a of the paper box to ensure that the paper board is fixed without dislocation; and secondly, the second tongue plate e is matched with the second side pressing plate, and creases are formed at the lower ends of the left side plate c and the right side plate c and between the second tongue plate e and the left side plate c and the right side plate c, so that the box body is formed. Therefore, the pressing head comprises a pressing bottom plate and pressing side plates arranged on the left side and the right side of the pressing bottom plate; the pressing bottom plate is matched with the station table to realize the effect (I), and the pressing side plate is matched with the second side pressing plate to realize the effect (II).

Drawings

Fig. 1 is a schematic structural view of a conventional paper cassette.

Fig. 2 is a schematic view of a conventional folding carton.

Fig. 3 is a schematic view of the carton forming device in the invention.

Fig. 4 is an enlarged view of a portion a of fig. 3.

Fig. 5 is a schematic structural diagram of the second lateral pressing mechanism.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The carton forming device comprises a rack, and a station table 2, a pressing head assembly, a first side pressing mechanism and a second side pressing mechanism which are arranged on the rack. The bottom plate a, the front side plate b, the rear side plate b, the left side plate c, the right side plate c, the first tongue plate d and the second tongue plate e of the paper box are marked in the attached drawings 1-2 of the specification.

The rack comprises a rack bottom plate 11 and a bracket 12 arranged on the rack bottom plate 11.

The station platform 2 is arranged on a bottom plate 11 of the frame and is used for placing a bottom plate a of a paper box.

The first side pressing mechanisms are also arranged on the bottom plate 11 of the machine frame and positioned at the front side and the rear side of the station platform 2, and comprise first side pressing plates 31 and first tongue pressing plates 32 arranged on the first side pressing plates 31; the first side pressing plate 31 can longitudinally lift and bend the front side plate b and the rear side plate b of the paper box from the lower part of the station table 2, and the first tongue plate d of the paper box can be bent in the moving process of the first tongue pressing plate 32. In the embodiment shown in the figures, the first lateral pressing mechanism further comprises a first lifting pair 33 arranged on the frame, and the first lateral pressing plate 31 is arranged on the first lifting pair 33. The first lifting pair 33 is driven by a first lifting cylinder 34 to lift, and specifically, the first lifting pair 33 comprises a longitudinal slide rail, a sliding seat arranged on the longitudinal slide rail in a sliding manner, and a first lifting cylinder 34 driving the sliding seat to move; the first side pressing plate 31 is fixed on the sliding seat. A first tongue depressing cylinder 35 is fixed on the first side pressing plate 31, and the first tongue depressing cylinder 35 drives the first tongue depressing plate 32 to move transversely. As shown in fig. 3 and 5, the left and right ends of the first side pressing plate 31 are provided with a first tongue depressor 32 in a sliding manner or in a penetrating manner, and the transverse moving direction of the first tongue depressor 32 is perpendicular to the first side pressing plate 31. The first tongue depressor 32 is a thin flat plate, and the first tongue depressor 32 can transversely move the first tongue plate d of the bending carton. In this embodiment, after the first tongue plate d of the folded carton is moved laterally, the first tongue plate 32 is not directly withdrawn, but the state of the first tongue plate d needs to be maintained by the first tongue plate 32. So that the paper box needs to be withdrawn from the left and right side plates of the box body after the integral forming of the paper box. Therefore, in this solution, on one hand, the first tongue depressor 32 needs to be a thin plate, so that when the lower ends of the left and right side plates c and the fold formed between the second tongue plate e and the left and right side plates c, the inner first tongue depressor 32 will not affect the position of the fold. On the other hand, the transverse moving direction of the first tongue depressor 32 is required to be perpendicular to the first side pressure plate 31, so that the first tongue depressor 32 can be smoothly withdrawn.

The second side pressing mechanisms are also arranged on the bottom plate 11 of the frame and positioned at the left side and the right side of the station platform 2, and comprise second side pressing plates 41 and second tongue pressing plates 42 arranged above the second side pressing plates 41. The second side pressing plate 41 can longitudinally lift and bend the left and right side plates c of the paper box from the lower part of the station table 2, and transversely move and press the left and right side plates c of the paper box, and the second tongue pressing plate 42 can move and bend the second tongue plate e of the paper box. In a specific technical scheme, the second lateral pressing mechanism further includes a second lifting pair 43 and a pressing cylinder 44 disposed on the second lifting pair 43, and the second lateral pressing plate 41 is connected to an output end of the pressing cylinder 44. The second lifting pair 43 is driven to lift by a second lifting cylinder 45 fixed on the bottom plate 11 of the rack, the second lifting pair 43 drives the second side pressing plate 41 to longitudinally lift and bend the left side plate c and the right side plate c of the paper box from the lower part of the station table 2, and the pressing cylinder 44 drives the second side pressing plate 41 to transversely move and press the left side plate c and the right side plate c of the paper box, so that the lower ends of the left side plate c and the right side plate c form creases. As shown in the drawings, the second lateral pressing mechanism includes a second tongue pressing cylinder 46 disposed on the second lifting pair 43, and an output end of the second tongue pressing cylinder 46 is directly or indirectly connected to the second tongue pressing plate 42. In one of the solutions, the output end of the second tongue depressing cylinder 46 is directly connected to the second tongue depressing plate 42. In another embodiment, as shown in the drawing, the output end of the second tongue depressing cylinder 46 is connected to one end of a swing link 47, the middle of the swing link 47 is hinged, and the other end of the swing link 47 is connected to the second tongue depressing plate 42. In the technical scheme, when the second tongue pressing cylinder 46 outputs, the swing rod 47 is driven to swing along a hinge point at the middle part of the swing rod 47, and the other end of the swing rod 47 drives the second tongue pressing plate 42 to move, so that the second tongue pressing plate 42 can bend the second tongue plate e of the paper box.

The pressing head assembly is positioned above the station platform 2, can longitudinally press the bottom plate a of the fixed paper box on the station platform 2, and can bend the second tongue plate e again after the second tongue plate e of the paper box is bent by the second tongue plate 42. Specifically, the pressing head assembly comprises a sliding seat 51 longitudinally slidably arranged on the support 12, a pressing air cylinder 52 driving the sliding seat 51 to slide relative to the support 12, and a pressing head arranged on the sliding seat 51. The pressing air cylinder 52 drives the sliding seat 51 and the pressing head thereon to move longitudinally, so as to realize pressing and withdrawing. As shown in the drawing, the press head includes a press bottom plate 53, and press side plates 54 provided on both left and right sides of the press bottom plate 53. The pressing bottom plate 53 clamps the bottom plate a of the paper box corresponding to the station table 2, and the pressing side plate 54 clamps the left and right side plates c of the paper box corresponding to the second side pressing plate 41 in the second side pressing mechanism. In the above technical scheme, the pressing head assembly has two functions. First, the bottom plate a of the paper box is clamped and fixed, so that the paper board is fixed without dislocation. Secondly, the second side pressing plate 41 is matched, and creases are formed at the lower ends of the left and right side plates c and between the second tongue plate e and the left and right side plates c, so that the box body is formed. Therefore, the above-mentioned press head includes a press bottom plate 53, and press side plates 54 provided on both left and right sides of the press bottom plate 53. The first function is realized by the cooperation of the pressing bottom plate 53 and the station table 2, and the second function is realized by the cooperation of the pressing side plate 54 and the second side pressing plate 41.

The technical scheme relates to a carton forming device which mainly has the function of folding a bottom plate a, front and rear side plates b, left and right side plates c, a first tongue plate d and a second tongue plate e, which are recorded in the background art, into a box body through mechanical actions. The carton forming device comprises a station table 2, a pressing head assembly, a first side pressing mechanism and a second side pressing mechanism. The folding steps of the carton forming device are as follows:

1, firstly, a bottom plate a of a fully unfolded paper board is aligned with a station table 2 to be placed,

and 2, the pressing head assembly is longitudinally pressed on the station table 2, and the bottom plate a of the paper box is clamped and fixed, so that the paper board is fixed and cannot be dislocated.

3, a first side pressing plate 31 in the first side pressing mechanism is longitudinally lifted from the lower part of the station table 2, so that the front side plate b and the rear side plate b of the paperboard are bent upwards.

4, the first tongue plates d are sequentially bent forwards and backwards by the first tongue plates 32 in the first side pressing mechanisms at the front side and the rear side.

And 5, a second side pressing plate 41 in the second side pressing mechanism is longitudinally lifted from the lower part of the station table 2, so that the left side plate c and the right side plate c of the paperboard are bent upwards. The left side plate c and the right side plate c are positioned outside the first tongue plate d.

6, the pressing head assembly moves upwards and retreats, and the second tongue depressor plate 42 in the second side pressing mechanism can move to bend the second tongue plate e of the carton inwards.

And 7, descending the pressing head assembly again, and turning the second tongue plate e downwards again to enable the left side plate c, the right side plate c and the second tongue plate e on the left side plate c to be turned over to wrap the first tongue plate d.

8, a second side pressing plate 41 in the second side pressing mechanism moves transversely to press the left side plate c and the right side plate c of the paper box, so that the lower ends of the left side plate c and the right side plate c and creases are formed between the second tongue plate e and the left side plate c, and the overall shape of the box body is finished.

9, the first tongue depressor 32 in the first side-depressing mechanism withdraws from between the left and right side plates of the box body

In addition, the upper end surface of the first side pressing plate 31 in the first side pressing mechanism and the upper end surface of the second tongue pressing plate 42 in the second side pressing mechanism are provided with inclined surfaces inclined towards the paper box pressing direction. As described above, in step 3, the first side pressing plate 31 of the first side pressing mechanism is lifted up in the longitudinal direction from below the station 2, so that the front and rear side plates b of the cardboard are bent upward. In step 5, the second side pressing plate 41 of the second side pressing mechanism is longitudinally lifted from the lower part of the station table 2, so that the left and right side plates c of the paperboard are bent upwards. Therefore, the upper end surface of the first side pressing plate 31 and the upper end surface of the second tongue pressing plate 42 both directly act on the front and rear side plates b and the left and right side plates c, and when moving upwards, creases are formed at the lower ends of the front and rear side plates b and the lower ends of the left and right side plates c, so that the creases are set as inclined surfaces, and the front and rear side plates b and the left and right side plates c are contacted through the inclined surfaces in the bending process, thereby avoiding the possibility of carton abrasion caused by the adoption of end corners.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. A carton forming device is characterized in that: the device comprises a rack, and a station table (2), a pressing head assembly, a first lateral pressing mechanism and a second lateral pressing mechanism which are arranged on the rack;

the station platform (2) is used for placing a bottom plate a of the paper box;

the first side pressing mechanisms are positioned on the front side and the rear side of the station table (2) and comprise first side pressing plates (31) and first tongue depressors (32) arranged on the first side pressing plates (31); the first side pressing plate (31) can longitudinally lift and bend the front side plate b and the rear side plate b of the paper box from the lower part of the station table (2); the first tongue plate d of the paper box can be bent in the movement process of the first tongue pressing plate (32);

the second side pressing mechanisms are positioned on the left side and the right side of the station table (2) and comprise second side pressing plates (41) and second tongue pressing plates (42) arranged above the second side pressing plates (41); the second side pressing plate (41) can longitudinally lift and bend the left side plate c and the right side plate c of the paper box from the lower part of the station table (2), and the left side plate c and the right side plate c of the paper box are pressed by moving, and the second tongue pressing plate (42) can transversely move and bend the second tongue plate e of the paper box;

the pressing head assembly is positioned above the station platform (2), can longitudinally and downwards press the bottom plate a of the fixed paper box on the station platform (2), and can bend the second tongue plate e of the paper box again after the second tongue plate e is bent by the second tongue plate (42).

2. A carton forming apparatus as defined in claim 1, wherein: the first tongue depressor (32) is a thin flat plate, and the first tongue depressor (32) can transversely move to bend the first tongue plate d of the paper box.

3. A carton forming apparatus as defined in claim 2, wherein: the left end and the right end of the first side pressing plate (31) are provided with a first tongue pressing plate (32) in a sliding mode or in a penetrating mode, and the transverse moving direction of the first tongue pressing plate (32) is perpendicular to the first side pressing plate (31).

4. A carton forming apparatus as defined in claim 3, wherein: the first lateral pressing mechanism comprises a first lifting pair (33) arranged on the rack, and the first lateral pressing plate (31) is arranged on the first lifting pair (33); a first tongue pressing cylinder (35) is fixed on the first side pressing plate (31), and the first tongue pressing cylinder (35) drives the first tongue pressing plate (32) to move transversely.

5. A carton forming apparatus as defined in claim 1, wherein: the second lateral pressing mechanism comprises a second lifting pair (43) and a pressing cylinder (44) arranged on the second lifting pair, and the second lateral pressing plate (41) is connected to the output end of the pressing cylinder (44); the second lifting pair (43) drives the second side pressing plate (41) to longitudinally lift and bend the left side plate c and the right side plate c of the paper box from the lower part of the station table (2), and the pressing cylinder (44) drives the second side pressing plate (41) to transversely move and press the left side plate c and the right side plate c of the paper box.

6. A carton forming apparatus as claimed in claim 5, wherein: the second side pressing mechanism comprises a second tongue pressing cylinder (46) arranged on the second lifting pair (43), and the output end of the second tongue pressing cylinder (46) is directly or indirectly connected to the second tongue pressing plate (42).

7. A carton forming apparatus as claimed in any one of claims 1 to 6, wherein: the upper end face of the first side pressing plate (31) and the upper end face of the second tongue pressing plate (42) are provided with inclined planes inclined towards the paper box pressing direction.

8. A carton forming apparatus as defined in claim 1, wherein: the rack comprises a rack bottom plate (11) and a bracket (12) arranged on the rack bottom plate (11); the pressing head assembly comprises a sliding seat (51) which is longitudinally arranged on the support (12) in a sliding mode, a pressing air cylinder (52) which drives the sliding seat (51) to slide relative to the support (12), and a pressing head arranged on the sliding seat (51).

9. A carton forming apparatus as defined in claim 8, wherein: the pressing head comprises a pressing bottom plate (53) and pressing side plates (54) arranged on the left side and the right side of the pressing bottom plate (53); the pressing bottom plate (53) and the station table (2) correspond to each other and clamp the bottom plate a of the paper box, and the pressing side plates (54) and the second side pressing plates (41) correspond to each other and clamp the left side plate c and the right side plate c of the paper box.