Tray mold ejection mechanism

Abstract

The utility model provides a tray mold ejection mechanism. The tray mold ejection mechanism comprises a lower mold assembly and a tray ejection assembly, the lower die assembly comprises a bottom supporting plate, a lower die plate, supporting columns, foot pier protrusions and a first driving unit. The tray ejection assembly comprises an ejection pipe and a second driving unit; the foot pier protrusions, the ejection pipes, the inner walls of the supporting columns and the through grooves in the lower mold plate jointly define a mold pressing space for mold pressing of the tray foot piers, and in this way, a tray with foot pier grooves with downward openings and a flat upper supporting face is formed. When the second driving unit drives the ejection pipe to move towards the through groove of the lower mold plate, the ejection pipe can push the tray to move upwards, so that the tray is separated from the lower mold plate, demolding of the tray is achieved, in the demolding process of the tray, the ejection pipe forms an annular force application point on foot piers of the tray, the stress of the tray is evenly distributed, and the demolding quality of the tray is improved. Local deformation of the ejection part of the tray cannot be caused, and the quality of the formed tray is good.

Description

Technical Field

[0001] This application relates to the field of wooden pallet production equipment technology, and in particular to a pallet mold ejection mechanism. Background Technology

[0002] Wooden pallets are typically made from plant fibers such as sawdust, wood chips, shavings, bamboo fiber, rice husks, and wheat straw, along with adhesives, through molding. In existing technology, wooden pallets usually have recessed feet. During molding, the lower mold forms foot grooves, and the upper mold forms foot protrusions. The protrusions and grooves engage to form the pallet feet. However, when carrying materials like wine bottles, the recessed feet cause these items to sink into the recessed feet, affecting stacking and transport. After molding, thin rods are typically used to push the pallet out from below. However, this method results in greater localized stress on the pallet, easily causing deformation at the ejection point and affecting the pallet's quality. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a pallet mold ejection mechanism, including a lower mold assembly and a pallet ejection assembly. The lower mold assembly includes a bottom support plate, a lower template, a support column, a foot support protrusion, and a first drive unit. The lower template has a vertically extending through groove. The support column is disposed between the lower template and the bottom support plate, and its top is fixedly connected to the lower template. The foot support protrusion is sleeved inside the support column, and its bottom is fixedly connected to the bottom support plate. One end of the first drive unit is fixedly connected to the support column, and the other end is fixedly connected to the bottom support plate. The pallet ejection assembly includes an ejection tube and a second drive unit. The ejection tube is sleeved outside the foot support protrusion. The foot support protrusion, the ejection tube, the inner wall of the support column, and the through groove on the lower template together enclose a molding space for molding the pallet foot support. When the second drive unit drives the ejection tube to move through the through groove of the lower template, the ejection tube can push the pallet upward, causing the pallet to separate from the lower template.

[0004] In some embodiments of this application, a groove extending vertically is provided on the outer peripheral surface of the support column; the pallet ejection assembly further includes an ejection plate, which is sleeved on the outside of the support column and passes through the groove on the support column to be fixedly connected to the foot block protrusion; one end of the second drive unit is fixedly connected to the bottom support plate, and the other end is fixedly connected to the ejection plate.

[0005] In some embodiments of this application, the lower mold assembly further includes a side strip disposed around the perimeter of the lower mold plate.

[0006] In some embodiments of this application, the footrest protrusion has a conical top.

[0007] In some embodiments of this application, the support pillars are in multiple groups, and the multiple groups of support pillars are arranged at intervals below the lower template.

[0008] In some embodiments of this application, there are multiple first driving units, and the multiple first driving units are distributed on both sides of the lower template.

[0009] In some embodiments of this application, the first drive unit is a cylinder or a hydraulic cylinder.

[0010] In some embodiments of this application, there are multiple second driving units, and the multiple second driving units are distributed on both sides of the lower template.

[0011] In some embodiments of this application, the second drive unit is a cylinder or a hydraulic cylinder.

[0012] In some embodiments of this application, the through groove on the lower template is conical, and the size of the through groove gradually increases from bottom to top along the vertical direction.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects: The pallet mold ejection mechanism of this application includes a lower mold assembly and a pallet ejection assembly; the lower mold assembly includes a bottom support plate, a lower template, a support column, a foot protrusion, and a first drive unit; the pallet ejection assembly includes an ejection tube and a second drive unit; the foot protrusion, the ejection tube, the inner wall of the support column, and the through groove on the lower template together enclose and form a molding space for molding the pallet foot, thus forming a pallet with a foot groove opening downward and a flat upper support surface; when the second drive unit drives the ejection tube to move downward through the groove of the lower template, the ejection tube can push the pallet upward, causing the pallet to separate from the lower template and realize the demolding of the pallet. During the demolding process of the pallet, the ejection tube forms a ring-shaped force application point on the foot of the pallet, so that the force distribution of the pallet is uniform and will not cause local deformation of the pallet ejection part, resulting in a high-quality pallet.

[0014] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit this document. Attached Figure Description

[0015] The accompanying drawings, which form part of this document, are used to provide a further understanding of the document. The illustrative embodiments and descriptions herein are used to explain the document and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the pallet mold ejection mechanism provided in an exemplary embodiment of this application;

[0017] Figure 2This is a top view of a pallet mold ejection mechanism provided in an exemplary embodiment of this application;

[0018] Figure 3 This is a front view of a pallet mold ejection mechanism provided in an exemplary embodiment of this application;

[0019] Figure 4 yes Figure 3 Sectional view at point AA;

[0020] Figure 5 It is a tray that exists in existing technology;

[0021] Figure 6 The pallet is molded using the pallet mold ejection mechanism of this application.

[0022] In the picture:

[0023] 101. Lower template; 102. Bottom support plate; 103. Column; 104. First drive unit; 105. Foot block protrusion; 106. Through groove; 107. Groove; 108. Edge strip;

[0024] 201. Second drive unit; 202. Ejector plate; 203. Ejector tube. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0026] Wooden pallets are typically made from plant fibers such as sawdust, wood chips, shavings, bamboo fiber, rice husks, and wheat straw, along with adhesives, through molding. In existing technology, wooden pallets usually have recessed feet. During molding, the lower mold forms foot grooves, and the upper mold forms foot protrusions. The protrusions and grooves engage to form the pallet feet. However, when carrying materials like wine bottles, the recessed feet cause these items to sink into the recessed feet, affecting stacking and transport. After molding, thin rods are typically used to push the pallet out from below. However, this method results in greater localized stress on the pallet, easily causing deformation at the ejection point and affecting the pallet's quality.

[0027] Based on this, an exemplary embodiment of this application provides a pallet mold ejection mechanism, which includes a lower mold assembly and a pallet ejection assembly; the lower mold assembly includes a bottom support plate, a lower template, a support column, a foot protrusion, and a first drive unit; the pallet ejection assembly includes an ejection tube and a second drive unit; the foot protrusion, the ejection tube, the inner wall of the support column, and the through groove on the lower template together enclose a molding space for molding the pallet foot, thus forming a pallet with a foot groove opening downwards and a flat upper support surface; when the second drive unit drives the ejection tube to move downwards into the through groove of the lower template, the ejection tube can push the pallet upwards, causing the pallet to separate from the lower template and realize the demolding of the pallet. During the demolding process of the pallet, the ejection tube forms a ring-shaped force application point on the pallet foot, so that the force distribution of the pallet is uniform and no local deformation of the pallet ejection part is caused, resulting in a high-quality pallet.

[0028] An exemplary embodiment of this application provides a pallet mold ejection mechanism, the mechanism including a lower mold assembly and a pallet ejection assembly; as shown below. Figures 1 to 3As shown, the lower mold assembly includes a bottom support plate 102, a lower template 101, a support column 103, a foot block protrusion 105, and a first drive unit 104; the lower template 101 is provided with a through groove 106 extending in the vertical direction; preferably, the through groove 106 on the lower template 101 is conical, and the size of the through groove gradually increases from bottom to top in the vertical direction, so that the wooden material can easily enter the through groove 106, and at the same time, it is convenient to demold the pallet foot block after the molding is completed. The support pillars 103 are in multiple groups. The number of pallet feet varies depending on the area of ​​the molded pallet, and consequently, the number of support pillars 103 also varies. For example, nine support pillars 103 can be provided, arranged at intervals below the lower template 101, such as in three rows and three columns with equal spacing. The support pillars 103 are positioned between the lower template 101 and the bottom support plate 102, with their tops fixed to the lower template 101. A groove 107 extending vertically is provided on the outer circumference of the support pillar 103, and a through hole is provided inside the groove. 107 is interconnected with the through hole, the position and size of which are adapted to the position and size of the through groove 106 on the lower template 101; the foot block protrusion 105 is fitted inside the support column 103, located in the through hole inside the support column 103, and its bottom is fixedly connected to the bottom support plate 102; the foot block protrusion 105 has a conical top, so that the foot block protrusion 105, the ejector tube 203, and the through groove 106 on the lower template 101 together enclose the molding space of the pallet foot block, and the molded foot block protrusion 105 has a downward-facing inner groove 107. Preferably, the first driving unit 104 is a cylinder or a hydraulic cylinder, one end of the first driving unit 104 is fixedly connected to the support column 103, and the other end is fixedly connected to the bottom support plate 102. Under the drive of the first driving unit 104, the lower template 101 and the support column 103 can move downward in the vertical direction to further compress the wood-plastic material and perform compensatory compression on the foot block during the wood-plastic pallet molding process.

[0029] In one embodiment, the pallet mold ejection mechanism cooperates with the upper mold assembly to complete the molding of the pallet, and the upper mold assembly is movably positioned above the lower mold assembly. As mentioned in the background art, since wooden pallets are usually made by molding sawdust, wood chips, shavings, bamboo fiber, rice husks, wheat straw and other plant fibers and adhesives, the compression amount of wooden pallets is usually much greater than that of plastic pallets during the molding process. This is necessary to obtain pallets with high density and high strength. Therefore, in order to ensure that the pallet feet are compacted during the molding process, foot protrusions 105 must be provided to compensate for the compression of the feet during the molding process. In the pallet mold ejection mechanism of this application, the foot protrusions 105 are located below the lower mold plate 101, so that a pallet with a flat surface can be molded between the upper mold plate and the lower mold plate 101. Figure 6 The image shows a pallet with a flat surface, molded using the pallet mold ejection mechanism of this application. Compared to... Figure 5 The pallets shown in the prior art, the pallets molded by the pallet mold ejection mechanism of this application, do not have recessed feet on the upper support surface, which can be used to support any material. At the same time, the flat upper support surface of the pallet has greater structural strength, and the overall structural strength of the pallet is high and not easily deformed.

[0030] like Figure 3 and 4 As shown, the pallet ejection assembly includes a second drive unit 201, an ejection plate 202, and an ejection tube 203; the ejection tube 203 is sleeved on the outside of the foot block protrusion 105; the ejection plate 202 is sleeved on the outside of the support column 103 and has a connecting part that extends into the groove 107 on the support column 103, the connecting part passing through the groove 107 on the support column 103 and being fixedly connected to the foot block protrusion 105; the second drive unit 201 can be a cylinder or a hydraulic cylinder, and the extended end of the second drive unit 201 is connected to the bottom support plate 10. 2. One end is fixedly connected to the other end, and the other end is fixedly connected to the ejector plate 202. Thus, under the drive of the second drive unit 201, when the ejector tube 203 moves towards the through groove 106 of the lower template 101 driven by the ejector plate 202, the top surface of the ejector tube 203 applies force to the pallet foot block so as to eject the pallet. When the top surface of the ejector tube 203 is flush with the upper surface of the lower template 101, the pallet is completely separated from the lower template 101, making the pallet demolding convenient and quick, and the pallet is not easily deformed during the demolding process.

[0031] The length of the groove 107 on the support column 103 limits the movement distance of the ejector plate 202 and the ejector tube 203. For example, when the second drive unit 201 drives the ejector plate 202 and the ejector tube 203 to move upward in the vertical direction, when the top surface of the ejector tube 203 is flush with the upper surface of the lower template 101, the connecting part of the ejector plate 202 moves to the top of the groove 107 on the support column 103, so as to limit the second drive unit 201 from driving the ejector tube 203 to continue to move upward.

[0032] In one embodiment, the lower mold assembly further includes a side strip 108, which is disposed around the perimeter of the lower mold plate 101. Thus, a space for accommodating the wood material is formed between the side strip 108 and the lower mold plate 101. To achieve uniform molding, multiple first drive units 104 are provided, distributed on both sides of the lower mold plate 101; to provide uniform lifting force during demolding, multiple second drive units 201 are provided, distributed on both sides of the lower mold plate 101. For example, a first drive unit 104 and a second drive unit 201 are provided at each of the four corners of the lower mold plate 101.

[0033] The pallet mold ejection mechanism of this application performs pallet molding as follows:

[0034] When the equipment is stationary, filler is applied to the lower template 101. At this time, the first drive unit 104 extends to drive the support column 103 and the lower template 101 away from the bottom support plate 102. The lower template 101 and the edge strip 108 enclose a first space to accommodate the wooden material. The wooden material filled in the first space forms a flat upper support surface of the pallet after molding. The inner wall of the support column 103, the ejector pipe 203, the through groove 106 of the lower template 101, and the foot protrusion 105 enclose a second space to accommodate the wooden material. The wooden material in the second space forms the foot of the pallet after molding. After the filling process is complete, the upper mold assembly moves downwards above the lower mold assembly and further downwards to compress the wooden material, forming a flat upper support surface for the pallet. After completing the preset compression, the upper and lower mold assemblies move downwards synchronously to compensate for the compression of the pallet feet, compacting them to form concave pallet feet with downward openings. At this point, the bottom surface of the support column 103 abuts against the bottom support plate 102, completing the pallet molding process. The pallet formed by the equipment of this application has a flat upper support surface and high-strength feet.

[0035] After the pallet molding is completed, the pallet is demolded. The upper mold assembly moves upward to the initial position. The second drive unit 201 drives the ejector plate 202 and ejector tube 203 to move upward. The top surface of the ejector tube 203 lifts the edge of the pallet foot block, causing the pallet to move upward. When the top surface of the ejector tube 203 is flush with the upper surface of the lower mold plate 101, the pallet is completely separated from the lower mold plate 101. In this way, the pallet demolding is completed efficiently and quickly. During the demolding process, a ring-shaped force point is formed on the pallet foot block, which will not cause local deformation of the pallet ejection part, resulting in good pallet quality.

[0036] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0037] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0038] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, the intent of this application also includes these modifications and variations.

Claims

1. A pallet mold ejection mechanism, characterized in that, The system includes a lower mold assembly and a pallet ejection assembly. The lower mold assembly includes a bottom support plate, a lower template, a support column, a foot support protrusion, and a first drive unit. The lower template has a vertically extending through groove. The support column is disposed between the lower template and the bottom support plate, and its top is fixedly connected to the lower template. The foot support protrusion is fitted inside the support column, and its bottom is fixedly connected to the bottom support plate. One end of the first drive unit is fixedly connected to the support column, and the other end is fixedly connected to the bottom support plate. The pallet ejection assembly includes an ejection tube and a second drive unit. The ejection tube is fitted outside the foot support protrusion. The foot support protrusion, the ejection tube, the inner wall of the support column, and the through groove on the lower template together enclose a molding space for molding the pallet foot support. When the second drive unit drives the ejector tube to move through the slot of the lower template, the ejector tube can push the tray upward, causing the tray to separate from the lower template.

2. The pallet mold ejection mechanism according to claim 1, characterized in that, The outer circumferential surface of the support column is provided with a groove extending in the vertical direction; the pallet ejection assembly also includes an ejection plate, which is sleeved on the outside of the support column and passes through the groove on the support column to be fixedly connected to the foot block protrusion; one end of the second drive unit is fixedly connected to the bottom support plate, and the other end is fixedly connected to the ejection plate.

3. The pallet mold ejection mechanism according to claim 1, characterized in that, The lower mold assembly also includes edge strips, which are disposed around the perimeter of the lower mold plate.

4. The pallet mold ejection mechanism according to claim 1, characterized in that, The footrest protrusion has a conical top.

5. The pallet mold ejection mechanism according to claim 1, characterized in that, The support pillars are in multiple groups, and the multiple groups of support pillars are arranged at intervals below the lower template.

6. The pallet mold ejection mechanism according to claim 1, characterized in that, There are multiple first driving units, which are distributed on both sides of the lower template.

7. The pallet mold ejection mechanism according to claim 6, characterized in that, The first drive unit is a pneumatic cylinder or a hydraulic cylinder.

8. The pallet mold ejection mechanism according to claim 1, characterized in that, There are multiple second driving units, which are distributed on both sides of the lower template.

9. The pallet mold ejection mechanism according to claim 8, characterized in that, The second drive unit is a pneumatic cylinder or a hydraulic cylinder.

10. The pallet mold ejection mechanism according to claim 1, characterized in that, The through groove on the lower template is conical, and its size gradually increases from bottom to top along the vertical direction.

Images