Square bottom compacting mechanism for paper containers

Abstract

The present invention discloses a compacting mechanism for the square bottom of a paper container, comprising a fixed mold and a transmission device, characterized in that: a cavity is provided in the fixed mold, the cavity can match and accommodate the square bottom of the paper container, a movable mold group is provided in the cavity, the movable mold group comprises four straight edge molds and four arc edge molds matching the inner wall of the corresponding cavity, and the straight edge molds and the arc edge molds can move and press the inner wall of the cavity in time periods, and the corresponding straight edge molds and the arc edge molds are driven by the transmission device. The present invention has a reasonable structure and realizes fast and stable compaction of the square bottom of the paper container.

Description

Technical Field

[0001] The invention relates to an improved invention in the field of paper container molding, and in particular to an improved invention of a square bottom compacting mechanism of a paper container. Background Art

[0002] When the square bottom of the paper container is ultrasonically ironed, it is necessary to compact the bottom against the inner wall of the paper container at the same time, or after the square bottom of the paper container is heated, it is necessary to further compact the bottom against the inner wall of the paper container. The traditional processing method uses an arc-edge compacting mold to compact the arc edge of the square bottom of the paper container first, and then uses a straight-edge compacting mold to compact the straight edge of the square bottom of the paper container. Two sets of molds are used for staggered multi-station compaction, which is carried out in steps. In this way, the paper container needs to be transferred between the two sets of molds, resulting in low efficiency and unstable quality. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a square bottom compacting mechanism for paper containers which is rationally structured, stable and highly efficient.

[0004] In order to solve the above technical problems, the present invention is implemented by adopting the following technical scheme: the square bottom compacting mechanism of the paper container includes a fixed mold and a transmission device, and is characterized in that a cavity is provided in the fixed mold, and the cavity can match and accommodate the square bottom of the paper container. A movable module is provided in the cavity, and the movable module includes four straight-side molds and four arc-side molds matching the corresponding inner walls of the cavity, and the straight-side molds and the arc-side molds can move and press the inner walls of the cavity in time periods, and the corresponding straight-side molds and arc-side molds are driven by the transmission device.

[0005] The side of the arc side mold is provided with a first giving way groove, and the two sides of the straight side mold are respectively placed in the first giving way grooves of two adjacent arc side molds, and the corresponding arc side mold moves before the straight side mold.

[0006] The side of the straight side mold is provided with a second paving groove, and the two sides of the arc side mold are respectively placed in the second paving grooves of two adjacent arc side molds, and the corresponding straight side mold moves before the arc side mold.

[0007] Slide blocks are respectively arranged at the bottom of the four straight-side molds and the four arc-side molds, and corresponding slide grooves are respectively arranged at the bottom of the fixed mold cavity, and the slide blocks can be movably placed in the slide grooves.

[0008] The slide block is transmission-connected with the swing arm, and the swing arm is driven to swing by the transmission device.

[0009] The swing arm can be swung and penetrated on the mounting plate, one end of the swing arm is hinged to the slider, the other end of the swing arm is provided with a driving inclined slot, the driving inclined slot is equipped with a driving roller, and the driving roller is connected to the transmission device.

[0010] The transmission device includes a first driving table and a second driving table that move back and forth, and the driving rollers are provided on the first driving table and the second driving table. The swing arms corresponding to the sliders of the four straight-side molds are driven by the first driving table, and the swing arms corresponding to the sliders of the four arc-side molds are driven by the second driving table.

[0011] The other end of the swing arm is also provided with a driving inclined plane, and the corresponding first driving platform and the second driving platform are provided with driving inclined blocks, and the position of the driving inclined blocks can be adjusted.

[0012] The straight side mold and the arc side mold are both provided with embossing.

[0013] The beneficial effect of the present invention is an improved compacting mechanism for the square bottom of a paper container. Four straight-side molds and four arc-side molds are installed in the mold cavity of the fixed mold. The four straight-side molds and four arc-side molds are arranged to avoid air and act in time periods. This achieves rapid and stable compaction of the square bottom of the paper container, and the pressure of the straight-side molds and the arc-side molds can be adjusted separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 It is a structural stereogram of the present invention.

[0016] Figure 2 It is a top view of the structure of the present invention.

[0017] Figure 3 It is a structural front view of the present invention.

[0018] Figure 4 It is a structural diagram of the fixed mold of the present invention. DETAILED DESCRIPTION

[0019] The accompanying drawings show the structure of the present invention, and the following further describes its relevant details in conjunction with the accompanying drawings. Figure 1-4 The square bottom compacting mechanism of the paper container includes a fixed mold 1 and a transmission device 2. The fixed mold 1 is installed on a mold base, and the mold base and the transmission device 2 are installed on a base. A cavity 11 is provided in the fixed mold 1, and the cavity 11 can match and accommodate the square bottom of the paper container. A movable module is provided in the cavity 11, and the movable module includes four straight-side molds 3 and four arc-side molds 4 that match the inner walls of the corresponding cavity 11, and the straight-side molds 3 and the arc-side molds 4 can move and press the inner walls of the cavity 11 in time periods, and the corresponding straight-side molds 3 and the arc-side molds 4 are driven by the transmission device 2.

[0020] As a further improved specific implementation method, see the attached Figure 3, the side of the arc side mold 4 is provided with a first clearance groove 41, and the two sides of the straight side mold 3 are respectively placed in the first clearance grooves 41 of the two adjacent arc side molds 4, and the corresponding arc side mold 4 moves before the straight side mold 3. The above is a space avoidance structure between the straight side mold 3 and the arc side film, which ensures that the straight side mold 3 and the arc side film can be installed in the cavity 11 without interfering with each other before moving to fit the inner wall of the cavity 11, and can move in time periods.

[0021] As a further improved specific implementation method, see the attached Figure 4 , the side of the straight side mold 3 is provided with a second clearance groove 31, and when the straight side mold 3 is shorter, the second clearance grooves 31 on both sides of the straight side mold 3 can be mutually connected, which is convenient for molding, and the two sides of the arc side mold 4 are respectively placed in the second clearance grooves 31 of the two adjacent arc side molds 4, and the corresponding straight side mold 3 moves before the arc side mold 4. The above is a space avoidance structure between the straight side mold 3 and the arc side film, which ensures that the straight side mold 3 and the arc side film can be installed in the cavity 11 without interfering with each other before moving to fit the inner wall of the cavity 11, and can move in time periods.

[0022] As a further improved specific implementation method, sliders 5 are respectively provided at the bottom of the four straight-side molds 3 and the four arc-side molds 4, and corresponding slide grooves 12 are respectively provided at the bottom of the fixed mold 1 cavity 11. The sliders 5 can be moved in the slide grooves 12. When the sliders 5 move in the slide grooves 12, they can drive the four straight-side molds 3 to move toward the planar inner wall 13 of the cavity 11 and drive the four arc-side molds 4 to move toward the arc-shaped inner wall 14 of the cavity 11.

[0023] As a further improved specific implementation, the slider 5 is transmission-connected to the swing arm 6 , and the swing arm 6 is driven to swing by the transmission device 2 , that is, the swing of the swing arm 6 drives the slider 5 to reciprocate in the slide groove 12 .

[0024] As a further improved specific implementation method, the swing arm 6 can be swung through the mounting plate 7, one end of the swing arm 6 is hinged to the slider 5, and the other end of the swing arm 6 is provided with a driving inclined groove 61, and the driving inclined groove 61 is equipped with a driving roller 62, and the driving roller 62 is connected to the transmission device 2.

[0025] As a further improved specific implementation method, see the attached Figure 2The transmission device 2 includes a first driving platen 21 and a second driving platen 22 that reciprocate. Specifically, the first driving platen 21 and the second driving platen 22 are movably sleeved on the sliding shaft 9 and driven by the cam component 8 to move successively. The first driving platen 21 and the second driving platen 22 are both provided with the driving roller 62. The swing arms 6 corresponding to the sliders 5 of the four straight side molds 3 are driven by the first driving platen 21, and the swing arms 6 corresponding to the sliders 5 of the four arc side molds 4 are driven by the second driving platen 22. Specifically, The swing arms 6 corresponding to the sliders 5 of the four arc side molds 4 pass through the first driving table 21, and the driving roller 62 on the first driving table 21 penetrates into the driving inclined groove 61 of the corresponding swing arms 6; the swing arms 6 corresponding to the sliders 5 of the four straight side molds 3 pass through the first driving table 21 and the second driving table 22 in turn, and the driving roller 62 on the second driving table 22 penetrates into the driving inclined groove 61 of the corresponding swing arms 6, so as to realize the synchronous action of the four arc side molds 4, the synchronous action of the four straight side molds 3, and the asynchronous action between the arc side mold 4 and the straight side mold 3.

[0026] As a further improved specific implementation method, the other end of the swing arm 6 is also provided with a driving inclined surface 63, and the corresponding first driving platen 21 and the second driving platen 22 are provided with a driving inclined block 64, and the position of the driving inclined block 64 can be adjusted, wherein the driving inclined block 64 acts on the driving inclined surface 63 of the swing arm 6, and is used to drive the swing arm 6 to swing and pressurize the arc edge film 4 and the straight edge mold 3. At the same time, the driving inclined block 64 is position-adjusted by adjusting the screw, so that the pressure of the arc edge film 4 and the straight edge mold 3 on the inner wall of the cavity can be adjusted separately.

[0027] As a further improved specific implementation method, both the straight edge mold 3 and the arc edge mold 4 are provided with embossing to enhance the compaction effect.

[0028] The working principle of the present invention, taking the arc-edge mold 4 moving before the straight-edge mold 3 as an example, first, the square bottom of the paper container is placed in the cavity 11 of the fixed mold 1, and then the first driving platen 21 drives the four arc-edge molds 4 through the swing arm 6 and the slider 5 to move toward the arc-shaped inner wall 14 of the cavity 11 respectively and cooperate with it to compact the four arc edges of the square bottom of the paper container, and then the second driving platen 22 drives the four straight-edge molds 3 through the swing arm 6 and the slider 5 to move toward the plane inner wall 13 of the cavity 11 respectively and cooperate with it to compact the four straight edges of the square bottom of the paper container, and finally the straight-edge mold 3 and the arc-edge mold 4 are reset in sequence.

[0029] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A square bottom compacting mechanism for paper containers, comprising a fixed die and a transmission device, characterized in that: The fixed mold is provided with a mold cavity, which can match and accommodate the square bottom of a paper container. The mold cavity is provided with a movable mold group, which includes four straight-side molds and four arc-side molds that match the inner walls of the corresponding mold cavities, and the straight-side molds and the arc-side molds can be moved in time periods to press the inner walls of the mold cavities, and the corresponding straight-side molds and the arc-side molds are driven by a transmission device; sliders are respectively provided at the bottoms of the four straight-side molds and the four arc-side molds, and corresponding slide grooves are respectively provided at the bottoms of the fixed mold cavities, and the sliders can be movably placed in the slide grooves; the sliders are connected to the swing arm transmission, and the swing arm is driven to swing by the transmission device; the swing arm can be swung through the mounting plate, and one end of the swing arm is hinged to the slider, A driving bevel is provided at the other end of the swing arm, and a driving roller is provided on the driving bevel, which is connected to a transmission device; the transmission device includes a first driving table and a second driving table that move back and forth, and the driving roller is provided on the first driving table and the second driving table, and the swing arms corresponding to the sliders of the four straight side molds are driven by the first driving table, and the swing arms corresponding to the sliders of the four arc side molds are driven by the second driving table; a driving inclined plane is also provided at the other end of the swing arm, and a driving bevel block is provided on the corresponding first driving table and the second driving table, and the position of the driving bevel block can be adjusted; embossing is provided on both the straight side mold and the arc side mold.

2. The square bottom compacting mechanism for paper containers according to claim 1, characterized in that: The side of the arc side mold is provided with a first giving way groove, and the two sides of the straight side mold are respectively placed in the first giving way grooves of two adjacent arc side molds, and the corresponding arc side mold moves before the straight side mold.

3. The square bottom compacting mechanism for paper containers according to claim 1, characterized in that: The side of the straight side mold is provided with a second paving groove, and the two sides of the arc side mold are respectively placed in the second paving grooves of two adjacent arc side molds, and the corresponding straight side mold moves before the arc side mold.

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