Powder forming device for preparing silicon dioxide delustering agent and use method of powder forming device
By designing an integrated powder forming device, the problems of many process steps, high energy consumption, low efficiency and fluctuations in the traditional silica matting agent preparation method are solved, and efficient and stable material forming and product quality improvement are achieved.
Patent Information
- Application Number
- CN202411723803.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-02-14
AI Technical Summary
There are multiple independent process steps for the preparation method of traditional silica matting agents, which requires a lot of manual intervention, high energy consumption and low efficiency, and the lack of effective control systems lead to large fluctuations in product performance, which cannot meet the market's consistency and stability. High standards required.
A powder forming device is designed, including mixing frames, liquid pumps, installation frames, dehumidification mechanisms, rolling and mixing mechanisms and other components. Through integrated design, the material is instantly dehumidified, rolling and mixing and rolling processing is achieved to ensure that the material is molded. Achieve ideal dry state before the process.
It improves production efficiency and product quality, reduces the time and space cost of dehumidification steps in traditional processes, ensures the uniformity and stability of materials, extends the continuous operation time of the equipment, and reduces operating costs.
Smart Images

Figure CN119425507A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of chemical product preparation, and in particular to a powder forming device for preparing a silicon dioxide matting agent and a use method thereof. Background Art
[0002] With the advancement of science and technology and the development of society, the demand for high-quality and high-performance materials is growing, especially in the field of silica matting agents, which are widely used in industries such as coatings and plastic products. The traditional preparation method of silica matting agents usually involves multiple independent process steps, such as mixing, grinding, drying, etc. These processes often require a lot of manual intervention and have problems of high energy consumption and low efficiency. In addition, due to the lack of an effective control system to monitor and adjust key parameters, the performance of the final product fluctuates greatly, which is not enough to meet the market's high standards for consistency and stability.
[0003] Therefore, in view of the above problems, a powder forming device for preparing a silicon dioxide matting agent and a method for using the same are now being developed. Summary of the invention
[0004] In order to overcome the shortcomings that existing devices often involve multiple independent process steps, such as mixing, grinding, drying, etc., these processes often require a lot of manual intervention and have high energy consumption and low efficiency. In addition, due to the lack of an effective control system to monitor and adjust key parameters, the performance of the final product fluctuates greatly and is insufficient to meet the market's high standards for consistency and stability. The present invention provides a powder molding device for preparing a silica matting agent.
[0005] The technical solution of the present invention is: a powder forming device for preparing a silicon dioxide matting agent, comprising a mixing frame, the liquid pump is installed on the right side of the lower part of the mixing frame, the right side of the liquid pump is connected to the installation frame through a pipeline, a pressing block assembly is arranged on the upper part of the installation frame, the pressing block assembly is used to extrude and grind the processed material, an upper top assembly is arranged on the lower part of the installation frame, the upper top assembly is used to push the milled material upward, and also includes: a dehumidification mechanism, the dehumidification mechanism is arranged on the liquid pump, the dehumidification mechanism is used to perform preliminary dehumidification and curing on the material after the mixing treatment is completed; a rolling and mixing mechanism, the rolling and mixing mechanism is arranged in the mixing frame, the rolling and mixing mechanism is used to perform preliminary mixing of the material and the adhesive.
[0006] Furthermore, the dehumidification mechanism includes an energy supply component, which is arranged on the upper left side of the mounting frame, a heating tube is sleeved on the pipe on the right side of the liquid pump, and the heating tube is electrically connected to the energy supply component, an air outlet pipe is arranged on the pipe, a collecting platform is connected to the top of the air outlet pipe, a plurality of baffles for limiting and stabilizing the flow direction of the gas are arranged on the collecting platform, and an air outlet is opened on the collecting platform, and the air outlet is used to guide the gas in the air outlet pipe to be discharged.
[0007] Furthermore, the rolling and mixing mechanism includes a fixed frame, the fixed frame is arranged on the top of the mixing frame, a funnel-shaped feeding bin is arranged in the middle of the fixed frame, a fixed table is arranged at the bottom of the mixing frame, the cross-section of the fixed table is a T-shaped structure, a rotating grinding disc is rotatably connected to the middle position of the top of the fixed table, a first gear is arranged on the outer side of the rotating grinding disc, a driving motor is installed on the upper right side of the mixing frame, the output shaft of the driving motor is arranged to face downward, a second gear is connected to the output shaft of the driving motor, and the first gear and the second gear are meshed with each other.
[0008] Furthermore, it also includes an ejection mechanism, which includes an electric track. The electric track is arranged on the upper sides of the front and rear parts of the installation frame. Moving plates are slidably arranged on the electric track. A pushing frame for pushing materials for storage is arranged between the moving plates.
[0009] Furthermore, it also includes a toggle mechanism, which includes a guide rod, the guide rod is arranged on the right side of the fixed frame, a movable rack frame is slidably arranged on the guide rod, the movable rack frame is connected to the extension rod on the rear side of the pushing frame, a limiting frame is arranged on the upper right rear part of the fixed frame, the limiting frame is slidably connected to the movable rack frame, a toothed frame is rotatably arranged on the funnel-shaped feeding bin in the middle of the fixed frame, a scraper is arranged inside the toothed frame, and the toothed frame and the movable rack frame are meshed with each other.
[0010] Furthermore, it also includes a stirring mechanism, which includes a stirring frame. A plurality of stirring frames are arranged on the outer side of the rotating grinding disc. A corresponding number of blocking members are installed on the stirring frames, and the blocking members are used to clean the sides of the fixed table. Anti-sticking members are installed on the lower side of the stirring frames, and the anti-sticking members are used to clean the bottom of the mixing frame.
[0011] Furthermore, a heating mechanism is included, which includes a mounting plate. The mounting plate is arranged on the right side of the mounting frame. A heating panel is arranged on the mounting plate. The heating panel is used to evaporate the prepared material again to prevent excessive moisture in the material.
[0012] The method for using the powder forming device for preparing the silicon dioxide matting agent comprises the following specific steps:
[0013] Step 1: Put the corresponding materials into the funnel-shaped feed bin and start the drive motor. At this time, the rotating grinding disc starts to rotate and grinds and mixes the materials preliminarily. The mixed materials will enter the mixing frame;
[0014] Step 2: After the material enters the mixing frame, the stirring frame will move with the rotating grinding disc to stir and mix the material to improve the mixing efficiency. After the mixing is completed, the liquid pump is started to make the material pass through the pipeline to the right and enter the installation frame;
[0015] Step 3: In this process, the energy supply component is started to make the heating cylinder work, evaporate the material, reduce the moisture in the material, and the material after evaporation enters the installation frame, then the briquetting component is started to process the material, and after the processing is completed, the upper push component is started to push the material out;
[0016] Step 4: Start the electric track, so that the push frame pushes the material to the right onto the heating panel for secondary steaming. At the same time, the moving rack frame will drive the toothed frame to clear the feed port.
[0017] By adopting the above technical solution, the advantages of the present invention are:
[0018] 1. Through the synergistic effect of the heating cylinder integrated on the right side of the liquid pump pipeline and the energy supply component, the device can achieve instant and efficient dehumidification during the material transportation process, which not only reduces the time and space costs required for the separate dehumidification step in the traditional process, but also ensures that the material reaches an ideal dry state before entering the subsequent molding process, thereby improving production efficiency and product quality.
[0019] 2. The linkage design of the toothed rack and the movable rack rack in the present invention effectively solves the problem of material condensation and blockage in the feed bin. When the material is pushed to the outlet, this set of mechanisms can work synchronously to continuously stir the material inside the feed port to ensure its fluidity and avoid solidification caused by long-term standing, thereby extending the continuous operation time of the equipment.
[0020] 3. The blocking member arranged on the stirring frame and the anti-sticking member at the bottom of the present invention together constitute a complete self-cleaning system, which can automatically remove the residues on the edge of the fixed table and the bottom of the mixing frame during the processing to prevent material accumulation from affecting normal operation, which not only improves the reliability of the equipment in long-term use, but also reduces the frequency of shutdown maintenance and reduces operating costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0022] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.
[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the dehumidification mechanism of the present invention.
[0024] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the dehumidification mechanism of the present invention.
[0025] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the rolling and mixing mechanism of the present invention.
[0026] Figure 6 It is a three-dimensional structural schematic diagram of the ejection mechanism of the present invention.
[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the toggle mechanism of the present invention.
[0028] Figure 8 It is a partial cross-sectional three-dimensional structural schematic diagram of the stirring mechanism of the present invention.
[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the heating mechanism of the present invention.
[0030] The names and serial numbers of the parts in the figure are: 1. mixing frame, 2. liquid pump, 3. mounting frame, 4. pressing block assembly, 5. upper assembly, 6. dehumidification mechanism, 61. energy supply assembly, 62. heating cylinder, 63. air outlet pipe, 64. air outlet, 65. collecting table, 7. rolling mixing mechanism, 71. fixing frame, 72. fixing table, 73. rotating grinding disc, 74. first gear, 75. driving motor, 76. second gear, 8. ejection mechanism, 81. electric track, 82. moving plate, 83. pushing frame, 9. toggle mechanism, 91. guide rod, 92. moving rack frame, 93. limiting frame, 94. toothed frame, 10. stirring mechanism, 101. stirring frame, 102. blocking member, 103. anti-sticking member, 11. heating mechanism, 111. mounting plate, 112. heating panel. 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0032] Example 1
[0033] Powder forming device for preparing silica matting agent, such as Figure 1 and Figure 2As shown, it includes a mixing frame 1, a liquid pump 2 is installed on the right side of the lower part of the mixing frame 1, and the right side of the liquid pump 2 is connected to the installation frame 3 through a pipeline. A block assembly 4 is arranged on the upper part of the installation frame 3, and the block assembly 4 is used to extrude and grind the processed materials. An upper top assembly 5 is arranged on the lower part of the installation frame 3, and the upper top assembly 5 is used to push the ground materials upward. It also includes: a dehumidification mechanism 6, which is arranged on the liquid pump 2, and the dehumidification mechanism 6 is used to perform preliminary dehumidification and curing on the materials after the mixing process is completed; a rolling and mixing mechanism 7, which is arranged in the mixing frame 1 and is used to perform preliminary mixing of the materials and the adhesive.
[0034] It should be noted that this device can be used when preparing the powder of silica matting agent. First, the material to be used is put into the rolling and mixing mechanism 7, and then the adhesive is simultaneously put into the rolling and mixing mechanism 7, and then the rolling and mixing mechanism 7 is started. The material is preliminarily mixed by relying on the rolling and mixing mechanism 7 so that the material can contact with the adhesive first. After the mixing is completed, the material will fall down into the mixing frame 1, and then the liquid pump 2 is started. The liquid pump 2 will pump the material to the right, so that the material passes through the dehumidification mechanism 6. The dehumidification mechanism 6 dehumidifies the material so that the moisture in the material is evaporated, and then the material continues to move to the right into the installation frame 3, and then the briquetting assembly 4 is used to grind the material so that the material is finally powdered. After completion, the material is sent out by relying on the ejection assembly for easy picking.
[0035] like Figure 1 , Figure 3 and Figure 4 As shown, the dehumidification mechanism 6 includes an energy supply component 61, and the energy supply component 61 is arranged on the upper left side of the mounting frame 3. A heating tube 62 is sleeved on the pipeline on the right side of the liquid pump 2, and the heating tube 62 is electrically connected to the energy supply component 61. An air outlet pipe 63 is arranged on the pipeline, and a collecting platform 65 is connected to the top of the air outlet pipe 63. The collecting platform 65 is provided with a plurality of baffles for limiting and stabilizing the flow direction of the gas, and an air outlet 64 is opened on the collecting platform 65, and the air outlet 64 is used to guide the gas in the air outlet pipe 63 to be discharged.
[0036] It should be noted that when the material is transported to the right into the installation frame 3 through the liquid pump 2, the energy supply component 61 is started synchronously. After the energy supply component 61 is running, it will supply power to the heating tube 62. After the heating tube 62 enters the power supply state, it will heat up, so that the passing material begins to be heated and dehumidified. The liquefied air flow generated by the heating will move upward along the outlet pipe 63, and then be discharged through the outlet 64. The liquid air flow after discharge will be affected by the baffle and begin to condense when it encounters cold, and the liquid is collected by the collection table 65.
[0037] like Figure 1 and Figure 5As shown, the rolling and mixing mechanism 7 includes a fixed frame 71, a fixed frame 71 is arranged on the top of the mixing frame 1, a funnel-shaped feeding bin is arranged in the middle of the fixed frame 71, a fixed platform 72 is arranged at the bottom of the mixing frame 1, the cross section of the fixed platform 72 is a T-shaped structure, a rotating grinding disc 73 is rotatably connected to the middle position of the top of the fixed platform 72, a first gear 74 is arranged on the outer side of the rotating grinding disc 73, a driving motor 75 is installed on the upper right side of the mixing frame 1, the output shaft of the driving motor 75 is arranged downward, a second gear 76 is connected to the output shaft of the driving motor 75, and the first gear 74 and the second gear 76 are meshed with each other.
[0038] It should be noted that when preparing materials, the materials are first fed in through the funnel-shaped feed bin, and then the drive motor 75 is started. The rotation of the output shaft of the drive motor 75 will drive the second gear 76 to rotate, so that the first gear 74 starts to rotate synchronously. During the rotation of the first gear 74, the rotating grinding disc 73 will be guided to rotate. The rotating grinding disc 73 will begin to cooperate with the fixed table 72 to perform preliminary mixing and grinding of the materials, so that the materials can be preliminarily bonded, thereby improving the subsequent preparation efficiency.
[0039] Example 2
[0040] On the basis of Example 1, Figure 1 and Figure 6 As shown, it also includes an ejection mechanism 8, which includes an electric track 81. The electric track 81 is set on the upper sides of the front and rear parts of the installation frame 3. Moving plates 82 are slidably set on the electric track 81. A pushing frame 83 for pushing the material for storage is set between the moving plates 82.
[0041] It should be noted that after the material is ground, the ejection assembly moves upward to push the material out. At this time, the electric track 81 is started again. After the electric track 81 is running, the moving plate 82 drives the pushing frame 83 to move to the right, thereby pushing the ejected material to the right for discharge.
[0042] like Figure 1 and Figure 7 As shown, it also includes a toggle mechanism 9, which includes a guide rod 91. The guide rod 91 is arranged on the right side of the fixed frame 71, and a movable rack frame 92 is slidably arranged on the guide rod 91. The movable rack frame 92 is connected to the extension rod on the rear side of the pushing frame 83. A limit frame 93 is arranged on the upper right rear side of the fixed frame 71. The limit frame 93 is slidably connected to the movable rack frame 92. A toothed frame 94 is rotatably arranged on the funnel-shaped feeding bin in the middle of the fixed frame 71, and a scraper is arranged inside the toothed frame 94. The toothed frame 94 and the movable rack frame 92 are meshed with each other.
[0043] It should be noted that when the pushing frame 83 moves to the right to push out the prepared material, the pushing frame 83 will simultaneously drive the movable rack frame 92 to move to the right, and the movable rack frame 92 will move smoothly along the limit frame 93 and the guide rod 91, thereby causing the toothed frame 94 to rotate. During the rotation of the toothed frame 94, the material in the funnel-shaped feed bin will be stirred to avoid clogging and condensation of the material.
[0044] like Figure 1 and Figure 8 As shown, a stirring mechanism 10 is also included, and the stirring mechanism 10 includes a stirring frame 101. A plurality of stirring frames 101 are arranged on the outer side of the rotating grinding disc 73. A corresponding number of blocking members 102 are installed on the stirring frames 101. The blocking members 102 are used to clean the sides of the fixed platform 72. Anti-sticking members 103 are installed on the lower sides of the stirring frames 101. The anti-sticking members 103 are used to clean the bottom of the mixing frame 1.
[0045] It should be noted that during the movement of the rotating grinding disc 73, the stirring frame 101 will be driven to move synchronously, so that the materials can be mixed and stirred quickly. In this process, the stirring frame 101 will drive the blocking member 102 to move, thereby scraping the edge of the fixed table 72 to prevent the material from condensing on the edge of the fixed table 72 and affecting the rotation of the rotating grinding disc 73. At the same time, the anti-sticking member 103 at the bottom will also scrape and clean the bottom of the mixing frame 1 to further prevent the problem of material condensation.
[0046] like Figure 1 and Fig. 9 As shown, a heating mechanism 11 is also included, and the heating mechanism 11 includes a mounting plate 111. The mounting plate 111 is arranged on the right side of the mounting frame 3, and a heating panel 112 is arranged on the mounting plate 111. The heating panel 112 is used to evaporate the prepared material again to prevent excessive moisture in the material.
[0047] The method for using the powder forming device for preparing the silicon dioxide matting agent comprises the following specific steps:
[0048] Step 1: Put the corresponding material into the funnel-shaped feed bin and start the drive motor 75. At this time, the rotating grinding disc 73 starts to rotate and grinds and mixes the material preliminarily. The mixed material will enter the mixing frame 1;
[0049] Step 2: After the material enters the mixing frame 1, the stirring frame 101 will move with the rotating grinding disc 73 to stir and mix the material to improve the mixing efficiency. After the mixing is completed, the liquid pump 2 is started to allow the material to pass through the pipeline to the right and enter the installation frame 3;
[0050] Step 3: In this process, the energy supply component 61 is started to make the heating cylinder 62 work, evaporate the material, reduce the moisture in the material, and the material after evaporation enters the installation frame 3, then the briquetting component 4 is started to process the material, and after the processing is completed, the upper push component 5 is started to push the material out;
[0051] Step 4: Start the electric track 81, so that the push frame 83 pushes the material to the right onto the heating panel 112 for secondary drying, and at the same time, the moving rack frame 92 drives the toothed frame 94 to clear the feed port.
[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A powder forming device for preparing a silicon dioxide matting agent, comprising a mixing frame (1), wherein the liquid pump (2) is installed on the right side of the lower part of the mixing frame (1), and the right side of the liquid pump (2) is connected to a mounting frame (3) through a pipeline, and a pressing block assembly (4) is arranged in the upper part of the mounting frame (3), and the pressing block assembly (4) is used to extrude and grind the processed material, and an upper push assembly (5) is arranged in the lower part of the mounting frame (3), and the upper push assembly (5) is used to push the milled material upward, characterized in that: Also included are: A dehumidification mechanism (6), wherein the dehumidification mechanism (6) is arranged on the liquid pump (2), and the dehumidification mechanism (6) is used to perform preliminary dehumidification and solidification on the material after the mixing process is completed; A rolling and mixing mechanism (7), wherein the rolling and mixing mechanism (7) is arranged in the mixing frame (1), and the rolling and mixing mechanism (7) is used for preliminarily mixing the material and the adhesive.
2. The powder forming device for preparing a silicon dioxide matting agent according to claim 1, characterized in that: The dehumidification mechanism (6) comprises an energy supply component (61), the energy supply component (61) is arranged on the upper left side of the installation frame (3), a heating tube (62) is sleeved on the pipeline on the right side of the liquid pump (2), the heating tube (62) is electrically connected to the energy supply component (61), an air outlet pipe (63) is arranged on the pipeline, the top of the air outlet pipe (63) is connected to a collecting platform (65), a plurality of baffles for limiting and stabilizing the flow direction of gas are arranged on the collecting platform (65), and an air outlet (64) is opened on the collecting platform (65), and the air outlet (64) is used to guide the gas in the air outlet pipe (63) to be discharged.
3. The powder forming device for preparing a silicon dioxide matting agent according to claim 2, characterized in that: The rolling and mixing mechanism (7) comprises a fixed frame (71), the fixed frame (71) is arranged on the top of the mixing frame (1), a funnel-shaped feeding bin is arranged in the middle of the fixed frame (71), a fixed platform (72) is arranged at the bottom of the mixing frame (1), the cross section of the fixed platform (72) is a T-shaped structure, a rotating grinding disc (73) is rotatably connected to the middle position of the top of the fixed platform (72), a first gear (74) is arranged on the outer side of the rotating grinding disc (73), a driving motor (75) is installed on the upper right side of the mixing frame (1), the output shaft of the driving motor (75) is arranged downward, a second gear (76) is connected to the output shaft of the driving motor (75), and the first gear (74) and the second gear (76) are meshed with each other.
4. The powder forming device for preparing a silicon dioxide matting agent according to claim 3, characterized in that: The device also comprises an ejection mechanism (8), the ejection mechanism (8) comprising an electric track (81), the electric track (81) being arranged on the upper sides of the front and rear parts of the mounting frame (3), the electric track (81) being slidably provided with a moving plate (82), and a pushing frame (83) for pushing the material for storage being arranged between the moving plates (82).
5. The powder forming device for preparing a silicon dioxide matting agent according to claim 4, characterized in that: The invention also comprises a toggle mechanism (9), wherein the toggle mechanism (9) comprises a guide rod (91), the guide rod (91) is arranged on the right side of the fixed frame (71), a movable rack frame (92) is slidably arranged on the guide rod (91), the movable rack frame (92) is connected to an extension rod on the rear side of the pushing frame (83), a limiting frame (93) is arranged on the upper right rear side of the fixed frame (71), the limiting frame (93) is slidably connected to the movable rack frame (92), a toothed frame (94) is rotatably arranged on the funnel-shaped feeding bin in the middle of the fixed frame (71), a scraper is arranged inside the toothed frame (94), and the toothed frame (94) and the movable rack frame (92) are meshed with each other.
6. The powder forming device for preparing a silicon dioxide matting agent according to claim 5, characterized in that: The invention also comprises a stirring mechanism (10), wherein the stirring mechanism (10) comprises a stirring frame (101), a plurality of stirring frames (101) are arranged outside the rotating grinding disc (73), a corresponding number of blocking members (102) are installed on each stirring frame (101), and the blocking members (102) are used to clean the side of the fixed platform (72), and an anti-sticking member (103) is installed on the lower side of each stirring frame (101), and the anti-sticking member (103) is used to clean the bottom of the mixing frame (1).
7. The powder forming device for preparing a silicon dioxide matting agent according to claim 6, characterized in that: The invention also comprises a heating mechanism (11), wherein the heating mechanism (11) comprises a mounting plate (111), the mounting plate (111) is arranged on the right side of the mounting frame (3), a heating panel (112) is arranged on the mounting plate (111), and the heating panel (112) is used to evaporate the prepared material again to prevent excessive moisture in the material.
8. A method for using a powder forming device for preparing a silicon dioxide matting agent, based on the powder forming device for preparing a silicon dioxide matting agent according to any one of claims 1 to 7, characterized in that: The specific steps are as follows: Step 1: Put the corresponding material into the funnel-shaped feed bin and start the drive motor (75), then the rotating grinding disc (73) starts to rotate and preliminarily grinds and mixes the material, and the mixed material enters the mixing frame (1); Step 2: After the material enters the mixing frame (1), the stirring frame (101) will move along with the rotating grinding disc (73) to stir and mix the material to improve the mixing efficiency. After the mixing is completed, the liquid pump (2) is started. The material passes through the pipe to the right and enters the installation frame (3); Step 3: In this process, the energy supply component (61) is started to make the heating cylinder (62) work, evaporate the material, reduce the moisture in the material, and the material after evaporation enters the installation frame (3). Then, the briquetting component (4) is started to process the material. After the processing is completed, the upper push component (5) is started to push the material out; Step 4: Start the electric track (81), so that the push frame (83) pushes the material to the right onto the heating panel (112) for secondary steam drying, and at the same time, the moving rack frame (92) drives the toothed frame (94) to clear the feed port.