Paper plate indentation die

Abstract

The utility model discloses a paper tray creasing die, which relates to the technical field of paper product production and processing, and comprises a rack, the rack comprises a support plate, a creasing plate and a driving mechanism for driving the creasing plate to move up and down, the support plate is fixed on the rack, the creasing plate is arranged above the support plate, the driving mechanism is arranged above the creasing plate, and the creasing plate is fixed on the rack. The supporting plate is provided with first indentation grooves and second indentation grooves, the length of the first indentation grooves is larger than that of the second indentation grooves, the first indentation grooves and the second indentation grooves are alternately distributed in the circumferential direction of the upper surface of the supporting plate, and the indentation plate is provided with first indentation protrusions and second indentation protrusions corresponding to the first indentation grooves and the second indentation grooves. When the paperboard is indented, the paperboard cannot be broken, demolding is convenient, after forming, the paper container becomes more stiff and is not prone to being softened, and follow-up forming machining of products is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper product production and processing technical field, concretely relates to a paper tray indentation die. BACKGROUND

[0002] Paper tray is a kind of paper container that is pressed out by rolling machine using paperboard made of chemical wood pulp or non-wood plant fiber. Paper tray has the same shape as other porcelain trays, but it is much lighter. It can be used to hold western dishes, bread, cakes and snacks.

[0003] Paper tray needs to be indented before forming to prevent the edge from wrinkling and affecting the appearance of the product after forming. The existing indentation die usually includes a support plate and an indentation plate, and the support plate and the indentation plate are respectively provided with indentation grooves and indentation protrusions. Since the indentation grooves are concentrated towards the center, under the premise of ensuring the indentation spacing of the edge of the paperboard to be relatively constant, the indentation of the paperboard will be too concentrated near the center side, which may cause the paperboard to break and be difficult to demold, affecting the subsequent forming processing of the product. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a paper tray indentation die.

[0005] The technical scheme provided by the utility model is as follows:

[0006] A paper tray indentation die includes a rack, a support plate, an indentation plate and a driving mechanism for driving the indentation plate to move up and down. The support plate is fixed to the rack, the indentation plate is arranged above the support plate, and the driving mechanism is arranged above the indentation plate. The support plate is provided with a first indentation groove and a second indentation groove, the length of the first indentation groove is greater than that of the second indentation groove, the first indentation groove and the second indentation groove are alternately distributed along the circumferential surface of the upper surface of the support plate, and the indentation plate is provided with a first indentation protrusion and a second indentation protrusion corresponding to the first indentation groove and the second indentation groove.

[0007] The distance between adjacent first indentation grooves gradually decreases from the outside to the center of the support plate, and the distance between adjacent second indentation grooves gradually decreases from the outside to the center of the support plate.

[0008] The end of the first indentation groove near the center side of the support plate is in arc shape, and the end of the second indentation groove near the center side of the support plate is in arc shape.

[0009] The end of the first indentation protrusion near the center side of the indentation plate is provided with a retreat slope, and the end of the second indentation protrusion near the center side of the indentation plate is provided with a retreat slope.

[0010] The driving mechanism comprises a driving motor, a double-crank pull rod mechanism, a driving plate, the double-crank pull rod mechanism comprises a first crank, a second crank and a pull rod, the first crank is connected to the output end of the driving motor, the second crank is arranged correspondingly to the first crank, the upper end of the pull rod is hinged between the first crank and the second crank, and the lower end of the pull rod is hinged to the driving plate, and the indentation plate is fixed to the lower end of the driving plate.

[0011] The driving motor is a servo motor comprising two output ends, the double-crank pull rod mechanism is two and the upper ends are respectively connected to the output ends of the servo motor and the lower ends are respectively connected to the two sides of the driving plate.

[0012] The upper end of the driving plate is provided with a fixed plate, the driving motor is fixed to the fixed plate, the driving plate is provided with a guide rod, the upper end of the guide rod is fixed to the fixed plate and the lower end of the guide rod is fixed to the rack.

[0013] The paper container is more stiff and is not easy to become soft, and the subsequent forming processing of the product is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 FIG. 2 is a structural schematic diagram of a support plate of an embodiment of the utility model;

[0016] Figure 3 FIG. 3 is a structural schematic diagram of an indentation plate of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The embodiments of the utility model will be further described below in combination with the drawings.

[0018] As Figure 1As shown, a paper disc indentation mold comprises a rack 1, the rack 1 comprises a support plate 2, an indentation plate 3, a driving mechanism for driving the indentation plate 3 to move up and down, the support plate 2 is fixed on the rack 1, the indentation plate 3 is arranged above the support plate 2, the driving mechanism is arranged above the indentation plate 3, the driving mechanism comprises a driving motor 7, a double-crank pull rod mechanism, and a driving plate 4, the double-crank pull rod mechanism comprises a first crank 9, a second crank 10, and a pull rod 11, the first crank 9 is connected to the output end 8 of the driving motor, the second crank 10 is arranged corresponding to the first crank 9, the upper end of the pull rod 11 is hinged between the first crank 9 and the second crank 10, and the lower end is hinged to the driving plate 4, the indentation plate 3 is fixed to the lower end of the driving plate 4, the driving motor 7 drives the first crank 9 and the second crank 10 to rotate, and then drives the pull rod to reciprocate, and finally drives the driving plate 4 to move up and down, the double-crank mechanism drives stably, can ensure the position accuracy of the indentation, and ensures the precision of the mold closing.

[0019] In the embodiment, the driving motor 7 is a servo motor comprising two output ends, the double-crank pull rod mechanisms are two and the upper ends are respectively connected to the output ends of the servo motor, and the lower ends are respectively connected to the two sides of the driving plate, the servo motor outputs stably, and the two double-crank pull rod mechanisms arranged symmetrically make the driving plate 4 rise with uniform force on both sides and not easy to deviate.

[0020] Further, the upper end of the driving plate 4 is provided with a fixed plate 6, the driving motor 7 is fixed to the fixed plate 6, the driving plate 4 is provided with a guide rod 5, the upper end of the guide rod 5 is fixed to the fixed plate 6, and the lower end is fixed to the rack 1, the guide rod 5 provides guidance and limiting for the up and down movement of the driving plate, and ensures the mold closing position accuracy.

[0021] As shown, Figure 2 The support plate 2 is provided with a first indentation groove 21 and a second indentation groove 22, the length of the first indentation groove 21 is greater than that of the second indentation groove 22, the first indentation groove 21 and the second indentation groove 22 are alternately distributed along the circumferential direction of the upper surface of the support plate 2, the interval between adjacent first indentation grooves 21 gradually decreases from the outside to the center of the support plate, the interval between adjacent second indentation grooves 22 gradually decreases from the outside to the center of the support plate, the interval of the indentation close to the center side is ensured on the premise that the interval of the edge of the paperboard is relatively constant, the paperboard indentation will not cause the paperboard to break, the end 23 of the first indentation groove 21 close to the center side of the support plate is in arc shape, the end of the second indentation groove 22 close to the center side of the support plate is in arc shape, the arc-shaped end improves the strength of the indentation end close to the center of the paper disc after indentation, and ensures the reliability of the indentation.

[0022] As shown, Figure 3As shown, the indentation plate 3 is provided with a first indentation protrusion 31 and a second indentation protrusion 32 corresponding to the first indentation groove and the second indentation groove, the first indentation protrusion 31 is provided with a retreat slope 33 near the end of the center side of the indentation plate, and the second indentation protrusion 32 is provided with a retreat slope near the end of the center side of the indentation plate. The retreat slope 33 facilitates demolding after the indentation plate completes indentation, avoiding adhesion.

[0023] The embodiments should not be regarded as limiting the utility model, and any non-creative improvement based on the spirit of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A paper plate indentation mold, comprising a frame, characterized in that: The frame includes a support plate, an indentation plate, and a driving mechanism for driving the indentation plate to move up and down. The support plate is fixed on the frame, the indentation plate is arranged above the support plate, and the driving mechanism is arranged above the indentation plate. The support plate is provided with a first indentation groove and a second indentation groove. The length of the first indentation groove is greater than the length of the second indentation groove. The first indentation groove and the second indentation groove are alternately distributed circumferentially along the upper surface of the support plate. The indentation plate is provided with a first indentation protrusion and a second indentation protrusion corresponding to the first indentation groove and the second indentation groove.

2. A paper plate indentation mold according to claim 1, characterized in that: The spacing between adjacent first indentation grooves gradually decreases from the outer side to the center of the support plate, and the spacing between adjacent second indentation grooves gradually decreases from the outer side to the center of the support plate.

3. The paper plate indentation mold according to claim 1, characterized in that: The end portion of the first indentation groove close to the center side of the support plate is in an arc shape, and the end portion of the second indentation groove close to the center side of the support plate is in an arc shape.

4. The paper plate indentation mold according to claim 1, characterized in that: An end portion of the first indentation protrusion close to the center side of the indentation plate is provided with a retreat slope, and an end portion of the second indentation protrusion close to the center side of the indentation plate is provided with a retreat slope.

5. The paper plate indentation mold according to claim 1, characterized in that: The driving mechanism includes a driving motor, a double crank pull rod mechanism, and a driving plate. The double crank pull rod mechanism includes a first crank, a second crank, and a pull rod. The first crank is connected to the output end of the driving motor, and the second crank is arranged corresponding to the first crank. The upper end of the pull rod is hinged between the first crank and the second crank, and the lower end is hinged to the driving plate. The indentation plate is fixed to the lower end of the driving plate.

6. The paper plate indentation mold according to claim 5, characterized in that: The driving motor is a servo motor with two output ends. The double crank pull rod mechanism has two upper ends connected to the output ends of the servo motor and lower ends connected to both sides of the driving plate.

7. The paper plate indentation mold according to claim 5, characterized in that: A fixing plate is provided on the upper end of the driving plate, the driving motor is fixed to the fixing plate, a guide rod is passed through the driving plate, the upper end of the guide rod is fixed to the fixing plate, and the lower end is fixed to the frame.

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