Mould-pressing tray mould

Abstract

The utility model relates to a mould pressing tray mould which comprises a lower mould and an upper mould, the upper mould is located above the lower mould, a foot pier groove is formed in the lower mould, foot pier protrusions are downwards formed on the upper mould, the foot pier protrusions are located above the foot pier groove, a plurality of protrusions and a plurality of grooves are formed in the side face of the inner wall of the foot pier groove, and the protrusions and the grooves are arranged alternately. The waved protrusions and the waved grooves are adopted for slowing down the flowing speed of raw materials, the situation that the raw materials are stacked at the bottoms of the foot pier grooves, the lower portions of the foot piers are too thick, the upper portions of the foot piers are too thin after a tray is formed is avoided, the difference value of the thickness of the upper portions and the thickness of the lower portions of the foot piers after the tray is formed is smaller, and the strength of the foot piers is improved.

Description

Technical Field

[0001] The utility model relates to the field of pallet moulds, in particular to a moulded pallet mould. Background Art

[0002] When producing existing molded pallets, it is necessary to first put the raw materials into the lower mold, and then extrude the upper and lower molds. The raw materials are a mixture of wood fiber and glue, which has a certain fluidity. Therefore, the raw materials will flow downward along the inner wall side (the lower side is inclined inward) in the foot pier groove of the lower mold, so that the raw materials at the lower part of the foot pier groove are more, and the raw materials at the upper part of the foot pier groove are less, which also leads to the problem that the pressed pallet foot pier is thin at the top and thick at the bottom. Therefore, in actual use, it is found that the strength of the lower part of the foot pier is too high, which is actually not needed, and the strength of the upper part of the foot pier is insufficient, and the upper part of the foot pier often breaks.

[0003] The existing solution to the problem is to thicken the wall thickness of the upper part of the foot pier. The specific technical means is to increase the degree of outward inclination of the upper side of the foot pier while keeping the area of ​​the bottom of the foot pier unchanged, so as to slow down the movement speed of the raw materials along the inner wall side, retain more raw materials on the upper part of the foot pier, and thus increase the wall thickness of the upper part of the foot pier. However, this method of increasing the degree of outward inclination of the upper side of the foot pier brings other problems. That is, if the upper side of the foot pier is tilted outward too much, the compressive capacity of the foot pier will be reduced, which will in turn lead to a decrease in the load-bearing capacity of the pallet; if the upper side of the foot pier is tilted outward too much, the stacking capacity of the pallet will also be reduced, because the accumulated weight of multiple pallets has a greater vertical component on the lower foot pier, and the lower side of the foot pier is more likely to be damaged. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a molded tray mold to solve the above problems.

[0005] A molded pallet mold includes: a lower mold and an upper mold, the upper mold is located above the lower mold, the lower mold is formed with a foot pier groove, the upper mold is formed with a foot pier protrusion downward, the foot pier protrusion is located above the foot pier groove, and the inner wall side of the foot pier groove is formed with multiple protrusions and multiple grooves, and the protrusions and grooves are arranged alternately.

[0006] On the basis of the above technical solution, the generatrix of the protrusions and the generatrix of the grooves form a wavy inner wall generatrix, and the inner wall generatrix is ​​inclined inward from top to bottom.

[0007] Based on the above technical solution, the distance between two adjacent protrusions at the bottom is greater than the distance between two adjacent protrusions at the middle.

[0008] Based on the above technical solution, the lower mold and the upper mold are both polygonal, the upper mold is formed with a reinforcing rib protrusion, the lower mold is formed with a reinforcing rib groove, the reinforcing rib protrusion is located above the reinforcing rib groove, and the foot pier groove at the corner of the lower mold is connected with the foot pier groove in the middle of the lower mold through the reinforcing rib groove.

[0009] On the basis of the above technical solution, it also includes a push rod and a driving mechanism. The lower mold is formed with a through hole below the foot pier groove. The push rod is located in the through hole. The driving mechanism drives the push rod to move up and down relative to the lower mold.

[0010] On the basis of the above technical solution, it also includes a base plate and a bracket. The lower part of the lower mold is fixedly connected to the bracket, and the lower part of the bracket is fixedly connected to the base plate. The driving mechanism includes a mounting frame, a rotating shaft, a bearing seat, a gear and a rack. The rack is fixed to the base plate and / or the bracket, the rotating shaft is fixedly connected to the gear, the gear is meshed with the rack, the rotating shaft is rotatably connected to the bearing seat, the bearing seat is fixedly connected to the mounting frame, and the mounting frame is slidably connected to the bracket.

[0011] On the basis of the above technical solution, it also includes a fence, which is located above the lower mold and fixedly connected to the lower mold.

[0012] Based on the above technical solution, the raised side surface of the foot pier is inclined inward from top to bottom.

[0013] Based on the above technical solution, a third curved surface is formed at the lower end of the foot pier protrusion, and a first curved surface and a second curved surface are formed on the side of the foot pier protrusion, and the second curved surface is located between the first curved surface and the third curved surface.

[0014] The utility model has the following advantages:

[0015] 1. Use wavy protrusions and grooves to slow down the flow of raw materials, avoid the accumulation of raw materials at the bottom of the foot pier groove, which will cause the lower part of the foot pier to be too thick and the upper part to be too thin after the tray is formed. This will make the difference in thickness between the upper and lower parts of the foot pier after the tray is formed smaller, thereby improving the strength of the foot pier;

[0016] 2. The distance between two adjacent protrusions is larger at the bottom than in the middle, which makes the thickness of the foot pier more uniform. At the same time, it also allows enough raw materials to flow to the bottom of the foot pier groove, so that the thickness of the foot pier above and below after the tray is formed can meet the requirements.

[0017] 3. The foot pier grooves at the corners are connected to the foot pier grooves in the middle through the reinforcing rib grooves, so that the raw materials between the foot pier grooves can flow through the reinforcing rib grooves, making the thickness difference of each foot pier smaller and improving the overall pallet strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 : A schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 : A schematic diagram of the main structure of the utility model;

[0021] Figure 3 : Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0022] Figure 4 : Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0023] Figure 5 : Schematic diagram of the three-dimensional structure of the lower mold;

[0024] Figure 6 : Figure 5 A schematic diagram of the local enlarged structure at C in the middle;

[0025] Figure 7 : Schematic diagram of the three-dimensional structure of the tray;

[0026] Figure 8 : Figure 7 A schematic diagram of the local enlarged structure at D in the middle;

[0027] Fig. 9 : Figure 2 Schematic diagram of the local enlarged structure at point E in the middle. DETAILED DESCRIPTION

[0028] The utility model is further described below with reference to the accompanying drawings and examples:

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] like Figures 1 to 9 As shown, this embodiment provides a molded pallet mold, including: a lower mold 1 and an upper mold 2, the upper mold 2 is located above the lower mold 1, the lower mold 1 is formed with a foot pier groove 11, the upper mold 2 is downwardly formed with a foot pier protrusion 21, the foot pier protrusion 21 is located above the foot pier groove 11, and the inner wall side of the foot pier groove 11 is formed with a plurality of protrusions 111 and a plurality of grooves 112, and the protrusions 111 and the grooves 112 are alternately arranged.

[0033] Preferably, the protrusion 111 and the groove 112 are respectively in a closed ring shape or a ring shape with groove discontinuities.

[0034] On the basis of the above technical solution, the generatrix of the protrusion 111 and the generatrix of the groove 112 form a wavy inner wall generatrix, and the inner wall generatrix is ​​inclined inward from top to bottom.

[0035] Based on the above technical solution, the distance between two adjacent protrusions 111 at the bottom is greater than the distance between two adjacent protrusions 111 at the middle.

[0036] The spacing between two adjacent protrusions above and below can increase gradually from the middle to the top and to the bottom; it can also be divided into three upper, middle and lower areas, the spacing between the two annular protrusions in each area is equal, and the spacing in the middle is the smallest; there can also be multiple areas, in some areas the spacing between two adjacent protrusions is equal, and in the remaining areas the spacing between two adjacent protrusions changes gradually.

[0037] Based on the above technical solution, the lower mold 1 and the upper mold 2 are both polygonal, the upper mold 2 is formed with a reinforcing rib protrusion 22, the lower mold 1 is formed with a reinforcing rib groove 12, the reinforcing rib protrusion 22 is located above the reinforcing rib groove 12, and the foot pier groove 11 at the corner of the lower mold 1 is connected with the foot pier groove 11 in the middle of the lower mold 1 through the reinforcing rib groove 12. Preferably, the lower mold 1 and the upper mold 2 are quadrilaterals.

[0038] On the basis of the above technical solution, it further includes a push rod 6 and a driving mechanism. The lower mold 1 is formed with a through hole 10 below the foot pier groove 11. The push rod 6 is located in the through hole 10. The driving mechanism drives the push rod 6 to move up and down relative to the lower mold 1.

[0039] On the basis of the above technical scheme, it also includes a base plate 3 and a bracket 31, the lower part of the lower mold 1 is fixedly connected to the bracket 31, and the lower part of the bracket 31 is fixedly connected to the base plate 3, the driving mechanism includes a mounting frame 5, a rotating shaft 51, a bearing seat 52, a gear 53 and a rack 54, the rack 54 is fixed to the base plate 3 and / or the bracket 31, the rotating shaft 51 is fixedly connected to the gear 53, the gear 53 is meshed with the rack 54, the rotating shaft 51 is rotatably connected to the bearing seat 52, the bearing seat 52 is fixedly connected to the mounting frame 5, and the mounting frame 5 is slidably connected to the bracket 31.

[0040] On the basis of the above technical solution, it also includes a fence 7, which is located above the lower mold 1 and fixedly connected to the lower mold 1.

[0041] Based on the above technical solution, the side surface of the foot pier protrusion 21 is inclined inward from top to bottom.

[0042] On the basis of the above technical solution, the lower end of the foot pier protrusion 21 is formed with a third curved surface 213, and the side of the foot pier protrusion 21 is formed with a first curved surface 211 and a second curved surface 212, and the second curved surface 212 is located between the first curved surface 211 and the third curved surface 213. The curvatures of the first curved surface 211, the second curved surface 212 and the third curved surface 213 that are inclined inwardly gradually increase. Since the wavy inner wall generatrix composed of the generatrix of the protrusion 111 and the generatrix of the groove 112 is basically inclined in a straight line direction, the overall distance between the first curved surface 211, the second curved surface 212 and the third curved surface 213 and the inner wall of the foot pier groove 11 gradually increases, even if the thickness of the bottom of the processed foot pier 91 is greater than the thickness of the top, the density and stress at the bottom caused by the small space at the bottom during compression molding are avoided.

[0043] When in use, first add the raw material into the lower mold 1, and use a scraper to flatten the raw material; at this time, the viscous raw material will move downward, and the wavy inner wall of the foot pier groove 11 will slow down the speed of the raw material moving downward, preventing the material from accumulating at the bottom of the foot pier groove 11. The spacing between the two lower protrusions 111 is greater than the spacing between the two upper adjacent protrusions 111, so that the higher the foot pier groove 11 is, the slower the raw material moves, so that the difference between the thickness of the raw material above the foot pier groove 11 and the thickness of the raw material below is reduced, which is conducive to enhancing the strength of the processed foot pier.

[0044] Then the upper mold 2 moves downward, and the foot pier protrusion 21 is inserted into the foot pier groove 11 to squeeze the raw material into a tray; at this time, the groove 112 plays a role in retaining the raw material, reducing the amount of raw material in the upper part of the foot pier groove 11 squeezed to the lower part by the foot pier protrusion 21, thereby improving the foot pier strength of the tray 9.

[0045] Afterwards, the upper mold 2 moves upward to reset; the driving mechanism drives the ejector rod 6 to move upward to eject the tray out of the lower mold 1; and the driving mechanism drives the ejector rod 6 to move up and down to reset.

[0046] After the tray is formed, the tray includes a load-bearing portion 91 and a foot pier 91, and the lower portion of the load-bearing portion 91 is integrally formed with a plurality of foot piers 91. The load-bearing portion 91 is formed with a reinforcing rib 911 having the same shape as the reinforcing rib groove 12. The foot pier 92 is formed with an outer side surface having the same shape as the protrusion 111 and the groove 112, and the wavy outer side surface of the foot pier 92 serves to enhance the strength. The wavy shape of the foot pier 92 with unequal spacing is stronger than the wavy shape with equal spacing.

[0047] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A molded tray mold, characterized in that: include: A lower mold (1) and an upper mold (2), wherein the upper mold (2) is located above the lower mold (1), the lower mold (1) is formed with a foot pier groove (11), the upper mold (2) is formed with a foot pier protrusion (21) downwardly, the foot pier protrusion (21) is located above the foot pier groove (11), and a plurality of protrusions (111) and a plurality of grooves (112) are formed on the inner wall side of the foot pier groove (11), and the protrusions (111) and the grooves (112) are arranged alternately.

2. The mold for a molded pallet according to claim 1, characterized in that: The generatrix of the protrusion (111) and the generatrix of the groove (112) form a wavy inner wall generatrix, and the inner wall generatrix is ​​inclined inward from top to bottom.

3. The mold for a molded pallet according to claim 1, characterized in that: The distance between two adjacent protrusions (111) at the bottom is greater than the distance between two adjacent protrusions (111) at the middle.

4. The mold for a molded pallet according to claim 1, characterized in that: The lower die (1) and the upper die (2) are both polygonal, the upper die (2) is formed with a reinforcing rib protrusion (22), the lower die (1) is formed with a reinforcing rib groove (12), the reinforcing rib protrusion (22) is located above the reinforcing rib groove (12), and the foot pier groove (11) at the corner of the lower die (1) is connected to the foot pier groove (11) in the middle of the lower die (1) through the reinforcing rib groove (12).

5. The mold for a molded pallet according to claim 1, characterized in that: It also includes a push rod (6) and a driving mechanism, wherein the lower mold (1) is formed with a through hole (10) below the foot pier groove (11), the push rod (6) is located in the through hole (10), and the driving mechanism drives the push rod (6) to move up and down relative to the lower mold (1).

6. The mold for a molded tray according to claim 5, characterized in that: The invention also comprises a bottom plate (3) and a bracket (31), wherein the bottom of the lower mold (1) is fixedly connected to the bracket (31), and the bottom of the bracket (31) is fixedly connected to the bottom plate (3). The driving mechanism comprises a mounting frame (5), a rotating shaft (51), a bearing seat (52), a gear (53) and a rack (54), wherein the rack (54) is fixed to the bottom plate (3) and / or the bracket (31), the rotating shaft (51) is fixedly connected to the gear (53), the gear (53) is meshed with the rack (54), the rotating shaft (51) is rotatably connected to the bearing seat (52), the bearing seat (52) is fixedly connected to the mounting frame (5), and the mounting frame (5) is slidably connected to the bracket (31).

7. The mold for a molded pallet according to claim 1, characterized in that: It also includes a fence (7), which is located above the lower mold (1) and is fixedly connected to the lower mold (1).

8. The mold for a molded pallet according to claim 1, characterized in that: The side surface of the foot pier protrusion (21) is inclined inward from top to bottom.

9. The mold for a molded tray according to claim 8, characterized in that: A third curved surface (213) is formed at the lower end of the foot pier protrusion (21), and a first curved surface (211) and a second curved surface (212) are formed on the side surface of the foot pier protrusion (21), wherein the second curved surface (212) is located between the first curved surface (211) and the third curved surface (213).

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