Core groove gluing machine for PVC (polyvinyl chloride)-based wood-plastic pencil production

Abstract

The utility model discloses a core groove gluing machine for PVC (Polyvinyl Chloride)-based wood-plastic pencil production, which relates to the technical field of pencil core groove gluing and comprises a gluing component, and the gluing component comprises a gluing box, an upper V-shaped plate, a lower V-shaped plate and a partition plate; a stirring and conveying assembly is further arranged on the inner side of the gluing box and used for stirring and conveying glue on the feeding bin, the gluing bin and the upper surface of the lower V-shaped plate, and therefore the glue is prevented from precipitating and caking. By arranging the gluing assembly and the stirring and conveying assembly, synchronous gluing operation of the two base plates can be achieved, so that complete bonding and fixing of a pencil lead and the two base plates are achieved, the pencil production quality is further improved, meanwhile, through cooperation of the stirring and conveying assembly, glue in the gluing box is in a low-speed flowing state, and the production efficiency is improved. The glue is effectively prevented from precipitating and caking, and stable gluing operation of the glue is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pencil lead groove gluing, in particular to a lead groove gluing machine for producing PVC-based wood-plastic pencils. Background Art

[0002] Wood-plastic composite materials (WPCs) are made by replacing conventional resin adhesives with polyethylene, polypropylene, and polyvinyl chloride (PVC), mixed with over 50% of waste plant fibers such as wood flour, rice husks, and straw. These materials are then processed through extrusion, compression molding, and injection molding to create new wood materials, either in sheet or profile form. WPC pencils are made by using WPCs instead of traditional wood materials through a specific processing technique. These pencils possess the advantages of both wood and plastic, such as light weight, durability, and resistance to breakage. They also effectively reduce wood consumption, contributing to a positive environmental impact.

[0003] In the production of wood-plastic pencils, the process of combining pencil leads and wood-plastic boards is sometimes similar to that used in traditional pencil manufacturing. This involves extruding and molding a base plate with a lead groove. Glue is then applied to one base plate, and the lead is then installed inside the groove. Finally, another base plate is placed on top of the base plate. After the glue solidifies, the base plate is cut into individual pencils. However, traditional glue application only applies glue to the top surface of one base plate, which can easily result in unbonded areas between the lead groove and the lead on the other base plate, affecting pencil quality. Therefore, a core groove glue coating machine for PVC-based wood-plastic pencil production is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a core groove glue coating machine for producing PVC-based wood-plastic pencils in order to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical solutions: a core groove gluing machine for producing PVC-based wood-plastic pencils, comprising a gluing assembly, wherein the gluing assembly comprises a gluing box, an upper V-shaped plate, a lower V-shaped plate, and a partition plate;

[0006] The upper V-shaped plate and the lower V-shaped plate are fixed to the inner side of the glue coating box in sequence along the vertical direction, the upper V-shaped plate is distributed above the lower V-shaped plate, and the partition plate is fixed to the top of the inner side of the glue coating box and is located in the middle of the top of the upper V-shaped plate. The partition plate cooperates with the upper V-shaped plate to separate the bottom of the inner side of the glue coating box into a feed bin and a glue coating bin;

[0007] The glue coating box and the glue coating bin are provided with a first feeding port for the upper substrate to pass through at the corresponding position, and the glue coating box is provided with a second feeding port for the lower substrate to pass through below the feeding bin, and the second feeding port is provided below the lower V-shaped plate, and a core groove glue coating port is provided at the bottom of the lower V-shaped plate aligned with the second feeding port;

[0008] The glue is transported to the inner side of the feeding bin by the glue supply device, and then flows along the outer wall of the lower V-shaped plate to the inner side of the glue coating bin for gluing the lower surface of the upper substrate passing through the first feeding port. The glue flows through the two side edges of the lower V-shaped plate to the upper surface of the upper V-shaped plate, and then flows downward through the core groove glue coating port to the upper surface of the lower substrate passing through the second feeding port, thereby realizing the gluing operation on the upper surface of the lower substrate.

[0009] The inside of the glue coating box is also provided with a stirring and conveying component, which is used to stir and convey the glue in the feed bin, the glue coating bin and the upper surface of the lower V-shaped plate, so as to avoid the glue from settling and clumping.

[0010] As a further solution of the present invention: the stirring conveying assembly includes a driving motor, a driving shaft, and a first spiral conveying piece;

[0011] The driving motor is installed at one end of the outside of the glue coating box, the active shaft is connected to the output end of the driving motor and passes through the inside of the glue coating box, and the active shaft is distributed between the upper V-shaped plate and the lower V-shaped plate;

[0012] The first spiral conveying piece is fixed to the outside of the active rotating shaft, and the first spiral conveying piece is distributed on the inner side of the middle concave part of the lower V-shaped plate;

[0013] The driving motor drives the active rotating shaft and the first spiral conveying piece to rotate, so as to push the glue on the upper surface of the lower V-shaped plate toward the core groove gluing port.

[0014] As a further solution of the present invention: the upper surface of the lower V-shaped plate is symmetrically fixedly connected with a shrinkage guide plate, the shrinkage guide plate is symmetrically distributed with the active rotating shaft as the center, and the shrinkage guide plate is distributed at one end of the lower V-shaped plate close to the core groove glue coating port.

[0015] As a further solution of the present invention: the stirring and conveying assembly further includes a transmission gear, a driven shaft, a second spiral conveying piece, and a driven gear;

[0016] The driven shaft is rotatably connected to the inner side of the glue coating box and is distributed above the upper V-shaped plate. The driven shaft passes through the feed bin and the glue coating bin. The second spiral conveying piece is fixed to the outer side of the driven shaft. The second spiral conveying piece is distributed inside the feed bin and is located inside the inner concave part of the middle part of the upper V-shaped plate. The rotating second spiral conveying piece is used to push the glue inside the feed bin to the inside of the glue coating bin.

[0017] The transmission gear and driven shaft are distributed outside the end of the glue coating box away from the driving motor, and are respectively fixed to one end of the driving shaft and the driven shaft. The transmission gear and driven shaft are engaged with each other to transmit the rotational force of the driving shaft to the driven shaft.

[0018] As a further solution of the present invention: the driven shaft is fixedly connected to an outer side of the portion inside the glue coating chamber with an extrusion wheel, and the number and position of the extrusion wheels correspond to the number and position of the refill slots on the upper substrate;

[0019] The number and position of the core groove glue coating openings correspond one to one with the number and position of the pen core grooves on the lower substrate.

[0020] As a further solution of the present invention: the height and width of the inner wall of the first feed opening are matched with the thickness and width of the upper substrate respectively;

[0021] The bottom horizontal height of the lower V-shaped plate matches the top horizontal height of the inner wall of the second feed opening, and the height and width of the inner wall of the second feed opening respectively match the thickness and width of the lower base plate.

[0022] As a further solution of the present invention: the two sides of the upper V-shaped plate do not contact the inner wall side surfaces of the glue coating bin, and the lower V-shaped plate is completely connected to the two sides of the inner wall of the glue coating bin.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] By setting up a gluing component and a stirring and conveying component, the synchronous gluing operation of the two substrates can be achieved, thereby achieving complete bonding and fixation of the pencil lead to the two substrates, further improving the production quality of pencils. At the same time, through the cooperation of the stirring and conveying component, the glue inside the gluing box is in a low-speed flow state, effectively avoiding the sedimentation and agglomeration of the glue, and ensuring the stable gluing operation of the glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the utility model with the upper and lower substrates removed;

[0027] Figure 3 This is a structural diagram of the utility model from another perspective;

[0028] Figure 4 This is a structural sectional view of the glue coating box of the present utility model;

[0029] Figure 5 This is a schematic diagram of the disassembly of the upper V-shaped plate, the lower V-shaped plate and the stirring and conveying assembly of the present invention.

[0030] In the figure: 1. Gluing assembly; 101. Gluing box; 102. Upper V-shaped plate; 103. Lower V-shaped plate; 104. Partition plate; 105. Feed bin; 106. Gluing bin; 107. First feeding port; 108. Second feeding port; 109. Core groove gluing port; 110. Contraction guide plate; 2. Stirring and conveying assembly; 201. Driving motor; 202. Driving shaft; 203. First spiral conveying piece; 204. Transmission gear; 205. Driven shaft; 206. Second spiral conveying piece; 207. Extrusion wheel; 208. Driven gear; 3. Upper base plate; 4. Lower base plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1 to 5 In an embodiment of the present invention, a core groove gluing machine for producing PVC-based wood-plastic pencils includes a gluing assembly 1, which includes a gluing box 101, an upper V-shaped plate 102, a lower V-shaped plate 103, and a partition plate 104. The upper V-shaped plate 102 and the lower V-shaped plate 103 are vertically fixed to the inside of the gluing box 101 in sequence, with the upper V-shaped plate 102 positioned above the lower V-shaped plate 103. The partition plate 104 is fixed to the top of the inside of the gluing box 101 and is located in the middle of the top of the upper V-shaped plate 102. The partition plate 104 cooperates with the upper V-shaped plate 102 to separate the bottom of the inside of the gluing box 101 into a feed bin 105 and a gluing bin 106.

[0033] At the corresponding position of the glue coating box 101 and the glue coating bin 106, there is a first feeding port 107 for the upper substrate 3 to pass through. The glue coating box 101 is located below the feed bin 105 and is provided with a second feeding port 108 for the lower substrate 4 to pass through. The second feeding port 108 is located below the lower V-shaped plate 103, and a core groove glue coating port 109 is provided at the bottom of the lower V-shaped plate 103 at a position aligned with the second feeding port 108.

[0034] The glue is transported to the inner side of the feed bin 105 through the glue supply equipment, and then flows along the outer wall of the lower V-shaped plate 103 to the inner side of the glue coating bin 106 for gluing the lower surface of the upper substrate 3 passing through the first feeding port 107. The glue flows through the two side edges of the lower V-shaped plate 103 to the upper surface of the upper V-shaped plate 102, and then flows downward through the core groove glue coating port 109 to the upper surface of the lower substrate 4 passing through the second feeding port 108, thereby realizing the gluing operation on the upper surface of the lower substrate 4.

[0035] A stirring and conveying assembly 2 is also provided inside the glue coating box 101, and the stirring and conveying assembly 2 is used to stir and convey the glue in the feed bin 105, the glue coating bin 106 and the upper surface of the lower V-shaped plate 103, so as to prevent the glue from settling and clumping.

[0036] The stirring and conveying assembly 2 includes a drive motor 201, a driving shaft 202, and a first spiral conveying piece 203. The drive motor 201 is installed at one end of the outside of the glue coating box 101. The driving shaft 202 is connected to the output end of the drive motor 201 and extends to the inside of the glue coating box 101. The driving shaft 202 is distributed between the upper V-shaped plate 102 and the lower V-shaped plate 103; the first spiral conveying piece 203 is fixed to the outside of the driving shaft 202 and is distributed inside the inner concave part of the middle part of the lower V-shaped plate 103; the operation of the drive motor 201 drives the driving shaft 202 and the first spiral conveying piece 203 to rotate, which is used to push the glue on the upper surface of the lower V-shaped plate 103 toward the core groove glue coating port 109; the stirring and conveying assembly 2 also includes a transmission gear 204, a driven shaft 205, a second spiral conveying piece 206, and a driven gear 208.

[0037] The driven shaft 205 is rotatably connected to the inner side of the glue coating box 101 and is distributed above the upper V-shaped plate 102. The driven shaft 205 passes through the feed bin 105 and the glue coating bin 106. The second spiral conveying piece 206 is fixed to the outer side of the driven shaft 205. The second spiral conveying piece 206 is distributed on the inner side of the feed bin 105 and is located on the inner side of the concave part in the middle of the upper V-shaped plate 102. The rotating second spiral conveying piece 206 is used to push the glue inside the feed bin 105 to the inside of the glue coating bin 106.

[0038] The transmission gear 204 and the driven shaft 205 are distributed outside the end of the glue coating box 101 away from the driving motor 201, and are respectively fixed to one end of the driving shaft 202 and the driven shaft 205. The transmission gear 204 and the driven shaft 205 are engaged with each other to transmit the rotational force of the driving shaft 202 to the driven shaft 205.

[0039] In this embodiment: It needs to be additionally explained that: a conveying assembly corresponding to the first feeding port 107 and the second feeding port 108 is provided on the outside of the glue coating box 101, which is used to convey the upper substrate 3 and the lower substrate 4 and pass through the glue coating box 101, and a glue supply device is provided above the glue coating box 101, and the unloading port of the glue supply device is aligned with the feed bin 105, which is used to provide glue to the feed bin 105. This structure is an existing structure in the prior art, so it is not elaborated on.

[0040] When the gluing device is in use, the glue supply device delivers glue to the inside of the feed bin 105, and the drive motor 201 is started synchronously at this time. The drive motor 201 drives the active shaft 202 and the first spiral conveying piece 203 to rotate. At the same time, the active shaft 202 drives the driven shaft 205 to rotate through the transmission gear 204 and the driven gear 208, and the driven shaft 205 drives the second spiral conveying piece 206 and the extrusion wheel 207 to rotate synchronously.

[0041] At this time, the rotating second spiral conveying piece 206 can push the glue inside the feed bin 105 to the inside of the glue coating bin 106. As the glue inside the glue coating bin 106 becomes more and more, the glue exceeds the upper edges on both sides of the upper V-shaped plate 102, and then flows out from the edges on both sides of the upper V-shaped plate 102 and drips onto the upper surface of the lower V-shaped plate 103, and then converges to the middle along the inclined surface of the V-shaped plate 103. At the same time, the rotating first spiral conveying piece 203 can push the glue of the V-shaped plate 103 toward the core groove glue coating port 109, and then flow out from the core groove glue coating port 109 (it should be noted that the spiral direction of the first spiral conveying piece 203 and the second spiral conveying piece 206 are the same, and the rotation directions of the active shaft 202 and the driven shaft 205 are opposite. Therefore, the first spiral conveying piece 203 and the second spiral conveying piece 206 have opposite conveying directions for glue).

[0042] The external conveying component pushes the upper substrate 3 and the lower substrate 4 to the first feeding port 107 and the second feeding port 108 respectively, and makes them pass through the first feeding port 107 and the second feeding port 108. During this process, the lower surface of the upper substrate 3 contacts the glue that spreads beyond the upper edge of the upper V-shaped plate 102, thereby realizing the gluing operation on the lower surface of the upper substrate 3 and the pen core groove on the upper substrate 3 (it should be noted that: the pen core groove of the upper substrate 3 faces downward), and the lower substrate 4 passes under the core groove gluing port 109, and the glue flowing out of the core groove gluing port 109 is used to gluing the pen core groove on the lower substrate 4.

[0043] By cooperating with the above-mentioned multiple parts, the simultaneous gluing operation of the two substrates can be achieved, thereby achieving complete bonding and fixation of the pencil lead to the two substrates, further improving the production quality of pencils. At the same time, by cooperating with the stirring and conveying component 2, the glue inside the gluing box 101 is made to flow, effectively avoiding the sedimentation and agglomeration of the glue, and ensuring the stable gluing operation of the glue.

[0044] Please refer to Figures 1 to 5 The upper surface of the lower V-shaped plate 103 is symmetrically fixedly connected with a shrinkage guide plate 110, and the shrinkage guide plate 110 is symmetrically distributed with the active rotating shaft 202 as the center, and the shrinkage guide plate 110 is distributed at one end of the lower V-shaped plate 103 close to the core groove glue coating port 109.

[0045] Both sides of the upper V-shaped plate 102 do not contact the inner wall side surfaces of the glue coating bin 106 , and the lower V-shaped plate 103 is completely connected to both sides of the inner wall of the glue coating bin 106 .

[0046] In this embodiment, by shrinking the guide plate 110 , the glue on the lower V-shaped plate 103 can be pushed to the core groove glue coating port 109 by the first spiral conveying piece 203 , and the glue can converge to the middle to avoid dead corners in the flow of glue.

[0047] Because the two sides of the upper V-shaped plate 102 are not in contact with the inner wall side surfaces of the glue coating bin 106, a channel is provided for the glue to flow downward to the lower V-shaped plate 103, and the lower V-shaped plate 103 can fully receive the glue.

[0048] Please refer to Figures 1 to 5 The driven shaft 205 is located inside the glue coating chamber 106 and is fixedly connected to an extrusion wheel 207 on the outside. The number and position of the extrusion wheels 207 correspond to the number and position of the refill slots on the upper substrate 3.

[0049] The number and position of the core groove glue coating openings 109 correspond to the number and position of the pen core grooves on the lower substrate 4 .

[0050] The inner wall height and width of the first penetration opening 107 match the thickness and width of the upper substrate 3 respectively.

[0051] The bottom level of the lower V-shaped plate 103 matches the top level of the inner wall of the second feed opening 108 , and the height and width of the inner wall of the second feed opening 108 match the thickness and width of the lower base plate 4 , respectively.

[0052] In this embodiment: in the process of the upper substrate 3 passing through the glue coating chamber 106, the refill groove on the upper substrate 3 will contact the extrusion wheel 207, and the extrusion wheel 207 can squeeze the glue adhered to the surface of the upper substrate 3 into the inside of the refill groove. At the same time, the glue on the surface of the extrusion wheel 207 can also fill the inside of the refill groove (it should be noted that: the bottom of the extrusion wheel 207 is in contact with the glue, and the extrusion wheel 207 will rotate under the movement and friction of the upper substrate 3, so that the surface of the extrusion wheel 207 is replenished with glue, and then the refill groove is filled with glue). In this way, the glue can completely enter the inside of the refill groove, ensuring that the refill groove of the upper substrate 3 is fully coated with glue.

[0053] It is also necessary to explain that the top horizontal height of the upper V-shaped plate 102 is slightly lower than the bottom horizontal height of the inner wall of the first feeding port 107, and the glue spreads over the top of the upper V-shaped plate 102. Therefore, when the upper substrate 3 moves along the bottom inner wall of the first feeding port 107, the bottom of the upper substrate 3 can contact the glue.

[0054] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A core groove gluing machine for producing PVC-based wood-plastic pencils, comprising a gluing assembly (1), characterized in that: The glue coating assembly (1) comprises a glue coating box (101), an upper V-shaped plate (102), a lower V-shaped plate (103), and a partition plate (104); The upper V-shaped plate (102) and the lower V-shaped plate (103) are fixed to the inner side of the glue coating box (101) in sequence along the vertical direction, the upper V-shaped plate (102) is distributed above the lower V-shaped plate (103), the partition plate (104) is fixed to the top of the inner side of the glue coating box (101) and is located in the middle of the top of the upper V-shaped plate (102), and the partition plate (104) cooperates with the upper V-shaped plate (102) to separate the inner bottom of the glue coating box (101) into a feed bin (105) and a glue coating bin (106); The glue coating box (101) has a first feeding port (107) for the upper substrate (3) to pass through at a position corresponding to the glue coating bin (106), and the glue coating box (101) is provided with a second feeding port (108) for the lower substrate (4) to pass through below the feeding bin (105). The second feeding port (108) is located below the lower V-shaped plate (103), and a core groove glue coating port (109) is provided at a position aligned with the second feeding port (108) at the bottom of the lower V-shaped plate (103); The glue is transported to the inner side of the feed bin (105) through the glue supply device, and then flows along the outer wall of the lower V-shaped plate (103) to the inner side of the glue coating bin (106) for gluing the lower surface of the upper substrate (3) passing through the first feeding port (107). The glue flows through the two side edges of the lower V-shaped plate (103) to the upper surface of the upper V-shaped plate (102), and then flows downward through the core groove glue coating port (109) to the upper surface of the lower substrate (4) passing through the second feeding port (108), thereby achieving the gluing operation on the upper surface of the lower substrate (4); A stirring and conveying assembly (2) is also provided inside the glue coating box (101), and the stirring and conveying assembly (2) is used to stir and convey the glue at the feed bin (105), the glue coating bin (106) and the upper surface of the lower V-shaped plate (103), so as to prevent the glue from settling and clumping.

2. A core groove gluing machine for producing PVC-based wood-plastic pencils according to claim 1, characterized in that: The stirring conveying assembly (2) comprises a driving motor (201), a driving rotating shaft (202), and a first spiral conveying piece (203); The driving motor (201) is installed at one end outside the glue coating box (101), the active rotating shaft (202) is connected to the output end of the driving motor (201) and passes through the inside of the glue coating box (101), and the active rotating shaft (202) is distributed between the upper V-shaped plate (102) and the lower V-shaped plate (103); The first spiral conveying piece (203) is fixed to the outside of the active rotating shaft (202), and the first spiral conveying piece (203) is distributed inside the middle concave part of the lower V-shaped plate (103); The driving motor (201) drives the active rotating shaft (202) and the first spiral conveying piece (203) to rotate, so as to push the glue on the upper surface of the lower V-shaped plate (103) toward the core groove glue coating port (109).

3. A core groove gluing machine for producing PVC-based wood-plastic pencils according to claim 2, characterized in that: A shrinkage guide plate (110) is symmetrically fixedly connected to the upper surface of the lower V-shaped plate (103), and the shrinkage guide plate (110) is symmetrically distributed around the active rotating shaft (202), and the shrinkage guide plate (110) is distributed at one end of the lower V-shaped plate (103) close to the core groove glue coating port (109).

4. A core groove gluing machine for producing PVC-based wood-plastic pencils according to claim 2, characterized in that: The stirring conveying assembly (2) further includes a transmission gear (204), a driven shaft (205), a second spiral conveying piece (206), and a driven gear (208); The driven shaft (205) is rotatably connected to the inner side of the glue coating box (101) and is distributed above the upper V-shaped plate (102). The driven shaft (205) passes through the feed bin (105) and the glue coating bin (106). The second spiral conveying piece (206) is fixed to the outer side of the driven shaft (205). The second spiral conveying piece (206) is distributed on the inner side of the feed bin (105) and is located inside the inner concave part of the middle part of the upper V-shaped plate (102). The rotating second spiral conveying piece (206) is used to push the glue inside the feed bin (105) to the inside of the glue coating bin (106); The transmission gear (204) and the driven shaft (205) are distributed outside the end of the glue coating box (101) away from the driving motor (201), and are respectively fixed to one end of the driving shaft (202) and the driven shaft (205). The transmission gear (204) and the driven shaft (205) are meshed with each other and are used to transmit the rotational force of the driving shaft (202) to the driven shaft (205).

5. A core groove gluing machine for producing PVC-based wood-plastic pencils according to claim 4, characterized in that: The driven shaft (205) is fixedly connected to an extrusion wheel (207) on the outside of the portion located inside the glue coating chamber (106), and the number and position of the extrusion wheels (207) correspond one-to-one to the number and position of the lead slots on the upper substrate (3); The number and position of the core groove glue coating openings (109) correspond one-to-one to the number and position of the pen core grooves on the lower substrate (4).

6. A core groove gluing machine for producing PVC-based wood-plastic pencils according to claim 1, characterized in that: The inner wall height and width of the first penetration opening (107) respectively match the thickness and width of the upper substrate (3); The bottom horizontal height of the lower V-shaped plate (103) matches the top horizontal height of the inner wall of the second material penetration opening (108), and the height and width of the inner wall of the second material penetration opening (108) respectively match the thickness and width of the lower base plate (4).

7. The core groove gluing machine for producing PVC-based wood-plastic pencils according to claim 1, characterized in that: Both sides of the upper V-shaped plate (102) do not contact the inner wall side surfaces of the glue coating bin (106), and the lower V-shaped plate (103) is completely connected to both sides of the inner wall of the glue coating bin (106).

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