Paper plastic product automatic forming machine
By adopting the support arm body and slider structure in the automatic molding machine of paper plastic products, the balanced lifting and lowering of the mold under hot pressing is solved, and the problem of insufficient supportability of the mold surface in the prior art is improved, and the product quality and equipment stability are improved .
Patent Information
- Application Number
- CN202111608206.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-24
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2041-12-24
AI Technical Summary
In existing automatic molding machines for paper and plastic products, the lifting instability of the mold under hot pressing leads to insufficient support of the mold surface, which is prone to rolling and failures, affecting working hours and product quality.
A structure supporting the arm body and the slider are designed, and the slider is lifted and lowered simultaneously along the guide rail. By supporting the slider jacket guide rail and clamping slide chute on the arm body, combined with an extendable protective cover, ensuring that the mold is lifted and lowered under the heat press. Balance and stability in the process.
Effectively prevent the lower mold from rolling on the hot press, ensuring that it is properly clamped with the upper mold of the hot press, improving product quality and equipment reliability, and reducing failure and maintenance time.
Smart Images
Figure CN114263072B_ABST
Abstract
Description
[Technical field]
[0001] The invention relates to an automatic forming machine for paper plastic products, in particular to an automatic forming machine for paper plastic products which can support the balanced lifting and lowering of a hot pressing lower mold and enable the hot pressing lower mold to be correctly molded with a hot pressing upper mold to improve product quality. [Background technology]
[0002] In view of the harm of plastic products to the environment, there are currently products that use pulp fiber materials and / or plant fiber materials as pulp raw materials, and then use a pulp absorption mold to absorb the pulp and attach the pulp, and then use hot pressing and shaping technology to make products. They are generally called "paper plastic products", or they are also called "molded products" or "paper pulp molded products", which are distinguished from "plastic products" in name. Paper plastic products have the advantage of being easy to recycle, remanufacture and reuse, which is in line with the trend of environmental protection, recycling and energy saving and carbon reduction. Therefore, they are quickly accepted by the industrial and commercial industries and the public and are willing to adopt them. Paper plastic products are often seen in products such as bowls, plates, cup lids, packaging materials, shock-absorbing materials, cushioning materials, etc.
[0003] The manufacturing of paper plastic products basically requires the processes of "slurry suction forming", "hot pressing shaping", "finished product transfer" and "end finishing". Among them, "slurry suction forming" and "hot pressing shaping" are the main manufacturing processes of paper plastic products, which generally must be completed by an "automatic paper plastic product forming machine". As for "finished product transfer" and "end finishing", after the manufacturing and forming of paper plastic products are completed, the finished products are further collected and transferred to the end finishing (for example: trimming, inspection, packaging) process. Therefore, it can be seen that the "automatic paper plastic product forming machine" is an important driving force for the manufacturing of paper plastic products. It is necessary to have a good "automatic paper plastic product forming machine" and match it with the appropriate manufacturing method (process steps) to manufacture and shape high-quality paper plastic products.
[0004] A conventional paper plastic product automatic forming machine 1, such as Figure 1 and Figure 2As shown, it is divided into three zones in terms of function. The one in the middle is a slurry suction forming zone 10. The zones on the left and right sides of the slurry suction forming zone 10 are hot pressing and shaping zones 20. For the convenience of explanation, they are further divided into different names of left hot pressing and shaping zone 20L and right hot pressing and shaping zone 20R. In the actual function process, after the slurry suction forming zone 10 performs the first round of slurry suction to complete the first embryo, it is switched to the left hot pressing and shaping zone 20L (or the right hot pressing and shaping zone 20R) to receive it for the first round of hot pressing and shaping operation. After the switch, the slurry suction forming zone 10 immediately performs the second round of slurry suction to complete the second embryo, and then switches to the right hot pressing and shaping zone 20R (or the left hot pressing and shaping zone 20L) to receive it for the second round of hot pressing and shaping operation. In this way, the hot pressing and shaping zones 20 on the two sides of the slurry suction forming zone 10 perform the embryo conversion and reception in turn, which can speed up the operation process and shorten the overall working time.
[0005] The automatic forming machine 1 for paper-plastic products, which is assembled by the hot-pressing and shaping zones 20 in the left and right areas and the slurry suction forming zone 10, is generally referred to as a double-head automatic forming machine for paper-plastic products. In fact, the forming and manufacturing of paper-plastic products can be completed by only working with the hot-pressing and shaping zone 20 in a single area and the slurry suction forming zone 10. Therefore, the automatic forming machine 1 for paper-plastic products, which is assembled by the hot-pressing and shaping zone 20 in a single area and the slurry suction forming zone 10, is generally referred to as a single-head automatic forming machine for paper-plastic products.
[0006] As for the hot pressing and shaping area 20 (whether 20L or 20R) on one side, Figure 3 As shown, the hot pressing shaping area 20 forms an action space 21, and the action space 21 includes a hot pressing upper mold 22 and a hot pressing lower mold 23, wherein the mold surface of the hot pressing upper mold 22 faces downward, and the hot pressing upper mold 22 is arranged at an upper position inside the action space 21. The hot pressing upper mold 22 can be hung on a guide rail to be pushed to move horizontally, or the hot pressing upper mold 22 can be installed in a fixed position. The various installation possibilities depend on the necessity of the process. The hot pressing lower mold 23 is also arranged inside the working space 21 and below the hot pressing upper mold 22. The mold surface of the hot pressing lower mold 23 faces upward and is symmetrical with the mold surface of the hot pressing upper mold 22. The bottom of the hot pressing lower mold 23 is pushed by a power cylinder 24 and can move upright upward when needed to close the mold with the hot pressing upper mold 22 for hot pressing and shaping. After completion, the hot pressing lower mold 23 is driven by the power cylinder 24 to drop to a fixed point and return to its original position.
[0007] Because the hot pressing lower mold 23 is made of rigid material and has considerable weight, an auxiliary support structure consisting of a guide column 25 and a guide sleeve 26 is generally installed on both sides of the power cylinder body 24. Its function is that when the cylinder shaft of the power cylinder body 24 extends outward to push the hot pressing lower mold 23 to move upward, the guide column 25 will follow the rise through the guide sleeve 26 to assist in supporting the hot pressing lower mold 23. Then, when the cylinder shaft of the power cylinder body 24 retracts to drive the hot pressing lower mold 23 to move downward, the guide column 25 also follows and descends and returns to its position through the guide sleeve 26 to provide auxiliary support for the hot pressing lower mold 23. The structure of the guide column 25 and the guide sleeve 26 is mainly to prevent the hot pressing lower mold 23 from tilting when moving up and down.
[0008] Because a large number of identical models can be developed on the die surface of the same die body to speed up the operation process, achieve the goal of shortening working hours and reducing costs, the die bodies of the hot pressing upper die and the hot pressing lower die tend to increase the die surface area, which is accompanied by the problem of insufficient support of the guide pin 25 and the guide sleeve 26. Figure 3 As shown, the guide sleeve 26 is fixed, and then the guide post 25 is extended or retracted through the guide sleeve 26 to assist in supporting the lifting of the hot pressing lower mold 23. Under long-term operation, the structure of the guide post 25 and the guide sleeve 26 is prone to poor stability and is relatively prone to failure accidents. Once a failure occurs, the time for disassembly, replacement, and other inspection and maintenance will greatly drag down the overall working hours. The above defects obviously need to be improved. [Summary of the invention]
[0009] The main purpose of the present invention is to provide an automatic forming machine for paper plastic products which can protect the balanced lifting of the hot pressing lower mold and make the hot pressing lower mold and the hot pressing upper mold correctly close to improve the product quality.
[0010] In order to achieve the above-mentioned purpose, the present invention proposes an automatic forming machine for paper plastic products, which has a slurry suction forming area and a hot pressing shaping area. The slurry suction forming area is provided with a slurry box and a slurry suction shaping mold in an action space. The slurry box contains slurry inside. The slurry suction shaping mold can be raised and lowered in the action space, and can slurry suction shape a preliminary embryo in the slurry box; the hot pressing shaping area is provided with a hot pressing upper mold and a hot pressing lower mold in an action space. The hot pressing upper mold is arranged at an upper position inside the action space, and the hot pressing lower mold is arranged inside the action space and is located below the hot pressing upper mold. The bottom of the hot pressing lower mold is pushed by a power cylinder to do The up and down moving action is characterized in that: a supporting arm body extends downward from the bottom surface of the hot pressing lower mold, a slider is fixed on the outer vertical surface of the supporting arm body, and a base plate is provided at the lower part of the action space, and a through hole groove is penetrated on the base plate corresponding to the supporting arm body, and a supporting frame is locked on the outer side of the supporting arm body corresponding to the two sides of the position on the base plate, and a supporting plate body is connected to the front and rear column surfaces of the supporting frame, and a guide rail is locked on the inner surface of the supporting plate body, and the slider on the supporting arm body can be inserted into the guide rail, and when the hot pressing lower mold is lifted or lowered, the slider is lifted or lowered synchronously along the guide rail to protect the balanced lifting or lowering of the hot pressing lower mold.
[0011] In the above-mentioned automatic forming machine for paper-plastic products, the slider is divided into a slider located at the top and a slider located at the bottom.
[0012] In the above-mentioned automatic forming machine for paper-plastic products, the front of the slider is an open groove in an upright shape, and after extending inward, the two sides are expanded to form a clamping slide groove in an upright shape; the guide rail extends a rail bar in an upward and downward direction to each side; each supporting arm body corresponds to a guide rail, and the slider on the supporting arm body clamps the corresponding guide rail through its open groove, and its clamping slide groove sequentially penetrates the rail bars on both sides of the guide rail.
[0013] In the above-mentioned automatic forming machine for paper-plastic products, a pushing plate is fixedly connected to the support arm body at a distance from the slider, a connecting plate is fixedly connected to the top surface of the support plate body, and a protective cover in the shape of an accordion that can be extended and contracted in the up and down directions is locked to the bottom surface of the connecting plate, and the lower end of the protective cover is a free end.
[0014] In the above-mentioned automatic forming machine for paper-plastic products, after the slider on the supporting arm body is clamped around the corresponding guide rail, the push piece abuts against the free end of the lower end of the protective cover, and the protective cover is in an extended state.
[0015] In the above-mentioned automatic forming machine for paper-plastic products, when the slider is pushed by the rising action of the hot-pressing lower mold and rises synchronously along the rail, the pushing piece pushes the protective cover to shrink upward, and finally when the hot-pressing lower mold and the hot-pressing upper mold are closed, the protective cover forms a maximum contraction state.
[0016] The advantages and beneficial effects of the present invention are as follows: according to the structural composition of the above-mentioned automatic forming machine for paper-plastic products, when in use, the slider on the supporting arm body can be inserted into the guide rail, and when the hot pressing lower mold rises or falls, the slider rises or falls synchronously along the guide rail to protect the hot pressing lower mold from rising or falling in a balanced manner, so that the hot pressing lower mold and the hot pressing upper mold can be correctly molded to improve product quality.
Brief Description of the Drawings
[0017] Figure 1 Shown is a stereogram of a conventional example.
[0018] Figure 2 Shown is a front view of a conventional example.
[0019] Figure 3 Shown is Figure 2 Enlarged view of the hot press molding area.
[0020] Figure 4 Shown is a perspective view of an embodiment of the present invention.
[0021] Figure 5 Shown is a front view of an embodiment of the present invention.
[0022] Figure 6 Shown is Figure 5 Enlarged view of the hot press molding area.
[0023] Figure 7 The figure shows a three-dimensional decomposition of the slider, the guide rail and the protective cover in the embodiment of the present invention. Figure 1 .
[0024] Fig. 7A Shown is Figure 7 A three-dimensional cross-sectional view of the middle guide rail area.
[0025] Figure 8 The figure shows a three-dimensional decomposition of the slider, the guide rail and the protective cover in the embodiment of the present invention. Figure 2 .
[0026] Fig. 8A Shown is Figure 8 A three-dimensional cross-sectional view of the middle slider.
[0027] Fig. 9 Shown is a combined sectional view of a slider and a guide rail in an embodiment of the present invention.
[0028] Fig.10 The figure shows the operation of the slider, the guide rail and the protective cover in the embodiment of the present invention. Figure 1 .
[0029] Fig.11 The figure shows the operation of the slider, the guide rail and the protective cover in the embodiment of the present invention. Figure 2 .
[0030] Paper plastic product automatic forming machine 1 Suction forming area 10
[0031] Hot pressing molding area 20 Left hot pressing molding area 20L
[0032] Right hot pressing and shaping area 20R Action space 21
[0033] Hot pressing upper mold 22 Hot pressing lower mold 23
[0034] Power cylinder 24 Guide column 25
[0035] Guide sleeve 26 Paper plastic product automatic forming machine 3
[0036] Suction forming area 30 Action space 31
[0037] Slurry box 32 Slurry suction molding die 33
[0038] Hot pressing molding area 40 Left hot pressing molding area 40L
[0039] Right hot pressing and shaping area 40R Action space 41
[0040] Hot pressing upper mold 42 Hot pressing lower mold 43
[0041] Support arm 431 Slider 432
[0042] Opening slot 433 Clamping slide slot 434
[0043] Push piece 435
[0044] Base plate 44 through-hole groove 441
[0045] Support frame 45 Support plate 451
[0046] Connecting plate 452 Guide rail 46
[0047] Rail 461 Protective cover 47 [Specific implementation method]
[0048] The embodiment of the present invention is an automatic paper plastic product forming machine 3, such as Figure 4 and Figure 5 As shown, the structure is divided into a slurry suction forming area 30 located in the middle and hot pressing and shaping areas 40 located on the left and right sides of the slurry suction and shaping area 30. For the convenience of explanation, it is further divided into a left hot pressing and shaping area 40L and a right hot pressing and shaping area 40R.
[0049] The slurry suction forming area 30 is provided with a slurry box 32 and a slurry suction forming mold 33 in an action space 31, wherein the slurry box 32 is fixedly arranged inside the action space 31, the interior of the slurry box 32 contains slurry, and the top surface is open; the slurry suction forming mold 33 is immersed in the slurry box 32, and the mold surface of the slurry suction forming mold 33 will be lower than the slurry surface of the slurry box 32 in the initial (zero) state, and the bottom of the slurry suction forming mold 33 is driven by a support member to perform lifting and lowering movements.
[0050] Any hot pressing and shaping area 40 (whether 40L or 40R), such as Figure 6 As shown, the hot pressing shaping area 40 forms an action space 41, and the inside of the action space 41 includes a hot pressing upper mold 42 and a hot pressing lower mold 43. The mold surface of the hot pressing upper mold 42 faces downward, and the hot pressing upper mold 42 is arranged at an upper position inside the action space 41; the hot pressing lower mold 43 is also arranged inside the action space 41 and is located below the hot pressing upper mold 42. The mold surface of the hot pressing lower mold 4 faces upward and is symmetrical in shape with the mold surface of the hot pressing upper mold 22. The bottom of the hot pressing lower mold 43 is pushed by a power cylinder body and moves upright upward when needed to close the mold with the hot pressing upper mold 42 for hot pressing shaping operation. After the hot pressing shaping operation is completed, the hot pressing lower mold 43 is driven by the power cylinder body to drop to a fixed point and return to its original position.
[0051] Please refer to Figure 7 and Figure 8 As shown, a support arm 431 extends downward from the bottom of each of the four sides of the hot pressing lower mold 43. A group of sliders 432 arranged in an upper and lower manner are fixedly arranged on the vertical surface of the support arm 431 facing the outside. The sliders 432 can be divided into the upper sliders 432 and the lower sliders 432. Please refer to Fig. 8A As shown, the front of the slider 432 is an open groove 433 in an upright shape, and then extends inwardly and the two sides are expanded to form a clamping slide groove 434 that is also upright. A pushing piece 435 is fixedly connected to the support arm 431 at a distance from the upper slider 432; there is a platform-shaped base plate 44 at the lower part of the working space 41, and a through hole 441 is penetrated at the position of the support arm 431 on the base plate 44, and a support frame 45 is locked on the outer side of the support arm 431 corresponding to the two sides of the split position, and a support plate 451 in an upward and downward direction is respectively connected to the front and rear column surfaces of the support frame 45, and then the guide rails 46 in an upward and downward direction are respectively locked on the inner surface of the support plate 451. Please refer to Fig. 7AAs shown, the guide rail 46 mainly extends a rail 461 extending upward and downward to each side, and is supported by the support frame 45. The support plate 451 and the lower section of the guide rail 46 are loosely inserted into the corresponding penetration hole 441 and fixed therein. At the same time, during the downward movement of the hot pressing lower mold 43, the lower section of the support arm 431 and the group of sliders 432 will also be loosely inserted downward into the corresponding penetration hole 441 and stay there (its action will be described later). A connecting plate 452 is fixedly connected to the top surface of the support plate 451, for locking a protective cover 47 in the shape of an accordion that can be extended and contracted in the upward direction. The lower end of the protective cover 47 is a free end. The protective cover 47 is in an extended state when not pushed by external force. If the free end of the lower end is subjected to an upward pushing force, the protective cover 47 will be in an upward upright contracted state.
[0052] During assembly, each support arm 431 corresponds to a guide rail 46, and the sliders 432 on the support arm 431 are grouped, and the opening grooves 433 thereof clamp the corresponding guide rail 46, and the clamping slide grooves 434 thereof sequentially penetrate the rails 461 on both sides of the guide rail 46. The assembly state is as follows: Fig. 9 As shown, the support arms 431 extending around the bottom surface of the hot pressing lower mold 43 are clamped by the slider 432 to produce a supporting effect on the guide rail 46, so that the four corners of the hot pressing lower mold 43 are supported very stably. Therefore, when the hot pressing lower mold 43 is pushed by the power cylinder to rise or fall, the slider 432 will rise or fall synchronously along the rail 461, and protect the four corners of the hot pressing lower mold 43 at any time to rise and fall in a very balanced manner without any tilting, so that the hot pressing lower mold 43 and the hot pressing upper mold 42 are correctly molded, thereby producing a good quality product.
[0053] like Fig.10 As shown in FIG. 1 , after the slider 432 on the support arm 431 is assembled with the corresponding guide rail 46, the push piece 435 on the upper side thereof will abut against the free end of the lower end of the protective cover 47. At this time, the protective cover 47 is in an extended state, so that the guide rail 46 can be protected from dust. Then, when the slider 432 is pushed by the rising action of the hot pressing lower mold 43 and rises synchronously along the rail 461, as shown in FIG. Fig.11 As shown, the push piece 435 will push the protective cover 47 to shrink upward. Finally, when the hot pressing lower mold 43 and the hot pressing upper mold 42 are properly molded, the upward movement of the hot pressing lower mold 43 stops, so the protective cover 47 will form a maximum shrinkage state (as shown in FIG. Fig.11 As shown), when the hot pressing upper mold 42 is pushed down by the power cylinder, the slider 432 is synchronously lowered along the rail 461, so the protective cover 47 is slowly stretched out and restored. Fig.10During the downward movement of the hot pressing mold 43, the lower section of the support arm 431 and the group of sliders 432 are of course inserted downward into the corresponding through-hole grooves 441 and stay.
[0054] As can be seen from the above description, the present invention improves the stability of the lifting of the hot pressing lower mold in the hot pressing and shaping area of the automatic forming machine for paper and plastic products. The biggest feature is that a supporting arm body extends downward from the bottom surface of the four sides of the hot pressing lower mold, and a slider is fixed on the vertical surface of the supporting arm body facing the outside; there is a base plate at the lower part of the working space of the hot pressing and shaping area, and a through hole groove is penetrated at the position corresponding to the supporting arm body on the base plate, and a supporting frame is locked adjacent to the outside of the supporting arm body divided into two sides on the base plate, and a supporting plate body is connected to the front and rear column surfaces of the supporting frame, and a guide rail is locked on the inner surface of the supporting plate body, and the slider on the supporting arm body can be inserted into the guide rail. When the hot pressing lower mold rises or falls, the slider rises or falls synchronously along the guide rail to protect the balanced lifting and lowering of the hot pressing lower mold, so that the hot pressing lower mold and the hot pressing upper mold can be correctly molded to improve product quality.
Claims
1. An automatic forming machine for paper plastic products, comprising a slurry suction forming area and a hot pressing shaping area, wherein a slurry box and a slurry suction forming mold are arranged in an action space in the slurry suction forming area, the slurry box contains slurry inside, the slurry suction forming mold is lifted and lowered in the action space, and the slurry suction forming mold is formed into a primary embryo in the slurry box; the hot pressing shaping area is provided with a hot pressing upper mold and a hot pressing lower mold in an action space, the hot pressing upper mold is arranged at an upper position inside the action space, the hot pressing lower mold is arranged inside the action space and is located below the hot pressing upper mold, and the bottom of the hot pressing lower mold is driven by a power cylinder to move up and down, characterized in that: A supporting arm extends downward from the bottom surface of the hot pressing lower mold, a slider is fixedly arranged on the outer vertical surface of the supporting arm, a base plate is arranged at the lower part of the action space, a through hole groove is penetrated on the base plate corresponding to the supporting arm, a supporting frame is locked on the outer side of the supporting arm corresponding to the two sides of the sub-position on the base plate, a supporting plate is connected to the front and rear column surfaces of the supporting frame, a guide rail is locked on the inner surface of the supporting plate, the slider on the supporting arm is sleeved on the guide rail, when the hot pressing lower mold is lifted or lowered, the slider is lifted or lowered synchronously along the guide rail to protect the balanced lifting or lowering of the hot pressing lower mold.
2. The automatic paper-plastic product forming machine according to claim 1, characterized in that: The slider is divided into an upper slider and a lower slider.
3. The automatic paper plastic product forming machine according to claim 1 or 2, characterized in that: The front of the slider is an open groove in an upright shape, and after extending inward, the two sides are expanded to form a clamping slide groove in an upright shape; the guide rail extends a rail bar in an upward and downward direction to each side; each supporting arm body corresponds to a guide rail, and the slider on the supporting arm body clamps the corresponding guide rail through its open groove, and its clamping slide groove sequentially penetrates the rail bars on both sides of the guide rail.
4. The automatic paper plastic product forming machine according to claim 1 or 2, characterized in that: A pushing plate is fixedly connected to the support arm body at a distance from the slider, a connecting plate is fixedly connected to the top surface of the support plate body, and a protective cover that stretches and contracts in an accordion-like manner in the up and down directions is locked to the bottom surface of the connecting plate, and the lower end of the protective cover is a free end.
5. The automatic paper-plastic product forming machine according to claim 4, characterized in that: After the sliding block on the supporting arm body is clamped on the corresponding guide rail, the pushing piece abuts against the free end of the lower end of the protective cover, and the protective cover is in an extended state.
6. The automatic paper-plastic product forming machine according to claim 4, characterized in that: When the slider is pushed by the rising action of the hot pressing lower mold and rises synchronously along the guide rail, the pushing piece pushes the protective cover to shrink upward, and finally when the hot pressing lower mold and the hot pressing upper mold are closed, the protective cover forms a maximum shrinkage state.