A powder mixing device for a powder forming machine

Abstract

The present invention discloses a powder mixing device for a powder forming machine, which belongs to the technical field of powder mixing and comprises a bottom plate, on which a mixing component and an auxiliary component are arranged. By arranging the mixing component and the auxiliary component, the powder raw materials before mixing can be screened, thereby ensuring that the particle size of the powder raw materials entering the mixing cylinder meets the requirements, thereby improving the mixing effect of the powder, and can also screen the mixed powder, and remove the powder that does not meet the particle size requirements after mixing, thereby avoiding that this part of the powder affects the quality of the formed product. By arranging a plurality of fan-shaped sieve plates, and making the sieve slit widths of each fan-shaped sieve plate different, it is convenient to call the required fan-shaped sieve plate according to the screening requirements, and by arranging a driving unit, it is possible to control the movement state of the mixing cylinder, thereby facilitating the operation of the mixing rotary frame in different states.

Description

Technical Field

[0001] The invention relates to the technical field of powder mixing, in particular to a powder mixing device for a powder forming machine. Background Art

[0002] In many industries such as powder metallurgy, ceramics, and food, powders need to be mixed before powder molding. The uniform mixing effect of powders is crucial to the quality of the final product. Insufficient mixing can easily lead to inconsistency and instability of materials, thereby affecting the performance of the molded product and further affecting the yield of the powder molding machine. The existing powder mixing device can only simply achieve the mixing of powder raw materials, and cannot screen the powder raw materials before mixing. Screening the powder raw materials in advance can effectively improve the mixing effect of the powder, and it is impossible to screen the mixed powder. The powder raw materials are prone to sticking and agglomerating during the mixing process. Directly molding the mixed powder will easily affect the quality of the molded product due to the sticky and agglomerated powder. Therefore, the present invention provides a powder mixing device for a powder molding machine. Summary of the invention

[0003] The present invention aims at the defects of the prior art and provides a powder mixing device for a powder forming machine, which overcomes the problems that the powder raw materials before mixing cannot be screened and the powder after mixing cannot be screened.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a powder mixing device for a powder forming machine, comprising a bottom plate, a mixing assembly is arranged on the bottom plate, the mixing assembly comprises a mixing cylinder, a mixing rotating frame is rotatably installed inside the mixing cylinder, a driving unit is arranged between the mixing cylinder and the mixing rotating frame, a limiting slide is slidably installed on the mixing cylinder, a fan-shaped sealing slide is fixedly installed on the limiting slide, the fan-shaped sealing slide and the mixing cylinder are slidably matched, and a locking unit is arranged between the limiting slide and the mixing cylinder An auxiliary component is also provided on the bottom plate, and the auxiliary component includes an auxiliary supporting cylinder, on which a fan-shaped frame plate and a plurality of fan-shaped screen plates are slidably mounted, and a rotating ring plate is rotatably mounted on the auxiliary supporting cylinder, on which a fan-shaped auxiliary strip plate is fixedly mounted, and on which a fan-shaped push plate is slidably mounted, and a complete ring plate is formed when the fan-shaped auxiliary strip plate and the fan-shaped push plate are joined, and limiting blocks are fixedly mounted on the fan-shaped screen plate and the fan-shaped frame plate, and the limiting blocks are provided with arc-shaped sliding grooves that cooperate with the fan-shaped auxiliary strip plates.

[0005] Furthermore, the mixing assembly includes a mixing support frame fixedly mounted on the base plate, a mixing cylinder rotatably mounted on the mixing support frame, a mixing rotating frame and the mixing support frame are rotatably connected, a driving unit includes an outer ratchet ring and a transmission ratchet, the transmission ratchet is rotatably mounted on the mixing support frame, the outer ratchet ring is fixedly mounted on the end surface of the mixing cylinder, a transmission group is arranged between the transmission ratchet and the mixing rotating frame, and the outer ratchet ring and the transmission ratchet are engaged to form a ratchet mechanism.

[0006] Furthermore, the locking unit includes two limiting circular plates, which are symmetrically rotatably installed on the end face of the mixing cylinder farthest from the outer ratchet ring. A torsion spring is arranged between the limiting circular plates and the mixing cylinder. Fan-shaped limiting strips are fixedly arranged on the limiting circular plates. Slide grooves cooperating with the fan-shaped limiting strips are arranged on both sides of the limiting slide, and a plurality of teeth are evenly fixedly arranged on the limiting circular plates.

[0007] Furthermore, a fan-shaped long funnel is fixedly installed on the outer surface of the mixing cylinder, and the end surface of the fan-shaped long funnel closest to the axis of the mixing cylinder is engaged with the sliding connection between the mixing cylinder and the fan-shaped sealing slide plate, and a fan-shaped scraper is slidably installed on the fan-shaped long funnel. The surface of the fan-shaped scraper closest to the axis of the mixing cylinder and the circumferential surface of the mixing cylinder farthest from the axis of the mixing cylinder are on the same circumferential surface, and a scraping screw is rotatably installed on the fan-shaped long funnel, and the fan-shaped scraper and the scraping screw constitute a spiral pair.

[0008] Furthermore, a transposition slide plate is slidably mounted on the bottom plate, three storage boxes are fixedly mounted on the transposition slide plate, a transposition screw rod is rotatably mounted on the bottom plate, and the transposition screw rod and the bottom plate form a spiral pair.

[0009] Furthermore, an auxiliary covering cylinder is slidably mounted on the bottom plate, a feed screw is rotatably mounted on the bottom plate, the feed screw and the auxiliary covering cylinder form a spiral pair, an auxiliary slide is slidably mounted on the auxiliary covering cylinder, an auxiliary screw is rotatably mounted on the auxiliary covering cylinder, the auxiliary slide and the auxiliary screw form a spiral pair, the auxiliary supporting cylinder is rotatably mounted on the auxiliary slide, and the axes of the mixing cylinder, the auxiliary covering cylinder and the auxiliary supporting cylinder are all in the same straight line.

[0010] Furthermore, an annular push plate 2 is slidably installed on the end surface of the mixing cylinder closest to the auxiliary covering cylinder, and a limit rack is symmetrically fixed on the annular push plate 2. The limit rack is engaged with the corresponding limit circular plate to form a gear rack pair, and an annular push plate 1 is fixedly installed on the end surface of the auxiliary covering cylinder closest to the mixing cylinder. The annular push plate 1 is used to push the annular push plate 2 to move.

[0011] Furthermore, the rotating ring plate and the auxiliary covering cylinder are movably connected, the circumferential surface on the end face of the auxiliary covering cylinder farthest from the rotating ring plate and the circumferential surface on the auxiliary supporting cylinder farthest from the axis of the auxiliary supporting cylinder are on the same circumferential surface, and the surface of the fan-shaped frame plate farthest from the axis of the auxiliary supporting cylinder and the circumferential surface on the auxiliary supporting cylinder farthest from the axis of the auxiliary supporting cylinder are on the same circumference.

[0012] Furthermore, one fan-shaped frame plate and a plurality of fan-shaped screen plates are arranged in an orderly circle relative to the axis of the auxiliary supporting cylinder, fan-shaped strips are fixedly provided on the end faces of the fan-shaped screen plate and the fan-shaped frame plate closest to the mixing cylinder, and fan-shaped grooves cooperating with the fan-shaped strips are provided on the end faces of the fan-shaped sealing slide plates farthest from the auxiliary covering cylinder, and the outer dimensions of the fan-shaped sealing slide plates, the fan-shaped screen plates and the fan-shaped frame plates are the same.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) By setting a mixing component and an auxiliary component, the present invention can screen the powder raw materials before mixing, thereby ensuring that the particle size of the powder raw materials entering the mixing cylinder meets the requirements, thereby improving the mixing effect of the powder. (2) By setting a mixing component and an auxiliary component, the present invention can screen the mixed powder and remove the powder that does not meet the particle size requirements after mixing, thereby avoiding that the powder affects the quality of the product after molding. (3) By setting a plurality of fan-shaped sieve plates, and making the sieve slit widths of each fan-shaped sieve plate different, the required fan-shaped sieve plate can be called according to the screening requirements. (4) By setting a driving unit, the present invention can control the movement state of the mixing cylinder under the action of the outer ratchet ring and the transmission ratchet, thereby facilitating the operation of the mixing turret in different states. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the transposition slide plate of the present invention.

[0016] Figure 3 It is a side view of the overall structure of the present invention.

[0017] Figure 4 It is a schematic structural diagram of the mixing component of the present invention.

[0018] Figure 5 for Figure 4 A local enlarged schematic diagram of point A in the middle.

[0019] Figure 6 It is a schematic structural diagram of the second annular push plate of the present invention.

[0020] Figure 7 for Figure 6 A local enlarged schematic diagram of point B in the middle.

[0021] Figure 8 It is a schematic structural diagram of the fan-shaped scraper of the present invention.

[0022] Fig. 9 It is a schematic diagram of the structure inside the mixing cylinder of the present invention.

[0023] Fig.10 It is a cross-sectional view of the mixing assembly of the present invention.

[0024] Fig.11 It is a schematic diagram of the structure of the auxiliary components of the present invention.

[0025] Fig.12 It is a schematic structural diagram of the rotating gear ring of the present invention.

[0026] Fig.13 It is a schematic structural diagram of the fan-shaped auxiliary strips of the present invention.

[0027] Fig.14 for Fig.13 A partial enlarged schematic diagram of point C in the middle.

[0028] Fig.15 It is a front view of the structure of the fan-shaped auxiliary strip plate of the present invention.

[0029] Fig.16 It is a schematic diagram of the structure of the interior of the mixing cylinder and the auxiliary covering cylinder of the present invention.

[0030] Reference numerals: 101-bottom plate; 102-transposition slide plate; 103-storage box; 104-transposition motor; 105-transposition screw rod; 106-mixing support frame; 107-mixing cylinder; 108-fan-shaped shielding plate; 109-fan-shaped push plate; 110-feeding motor; 111-auxiliary covering cylinder; 112-annular push plate 1; 113-annular push plate 2; 114-auxiliary supporting cylinder; 115-auxiliary slide; 116-feeding screw rod; 117-fan-shaped long strip funnel; 118-limiting slide; 119-scraping motor; 120-outer ratchet ring; 121-driving motor; 122-transmission ratchet; 123-transmission group; 124-fan-shaped sealing slide plate; 125-limiting rack; 126-limiting circular plate; 127-fan-shaped limiting strip plate; 128-fan-shaped scraper; 129-scraping screw; 130-mixing turret; 131-auxiliary screw; 132-auxiliary motor; 133-calling motor; 134-rotation motor; 135-rotation gear; 136-rotation gear ring; 137-switching motor; 138-rotation ring plate; 139-fan-shaped screen plate; 140-fan-shaped frame plate; 141-fan-shaped auxiliary strip plate; 142-limiting block; 143-switching screw. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] Example: Reference Figure 1-Figure 16 A powder mixing device for a powder forming machine comprises a bottom plate 101, a mixing assembly is arranged on the bottom plate 101, the mixing assembly comprises a mixing cylinder 107, a mixing support frame 106 is fixedly mounted on the bottom plate 101, the mixing cylinder 107 is rotatably mounted on the mixing support frame 106, a mixing rotating frame 130 is rotatably mounted inside the mixing cylinder 107, the mixing rotating frame 130 is rotatably connected to the mixing support frame 106, a driving unit is arranged between the mixing cylinder 107 and the mixing rotating frame 130, the driving unit comprises an outer ratchet ring 120 and a transmission ratchet 122, the transmission ratchet 122 is rotatably mounted on the mixing support frame 106, the outer ratchet ring 120 is fixedly mounted on the end surface of the mixing cylinder 107, the outer ratchet ring 120 and the transmission ratchet 122 are engaged to form a ratchet mechanism, and a transmission is arranged between the transmission ratchet 122 and the mixing rotating frame 130. The transmission group 123 includes a belt and two pulleys. The two pulleys in the transmission group 123 are fixedly mounted on the transmission ratchet 122 and the mixing rack 130 respectively. The two pulleys in the transmission group 123 are connected through the belt in the transmission group 123. A driving motor 121 is fixedly mounted on the mixing support frame 106. The output shaft of the driving motor 121 is fixedly connected to the mixing rack 130. The surface of the mixing rack 130 farthest from the axis of the mixing cylinder 107 and the circumferential surface inside the mixing cylinder 107 are on the same circumferential surface, that is, the surface of the mixing rack 130 farthest from the axis of the mixing cylinder 107 is in contact with the circumferential surface inside the mixing cylinder 107. There is friction between the mixing cylinder 107 and the mixing support frame 106. When the mixing cylinder 107 is not subjected to external force, it will not rotate relative to the mixing support frame 106.

[0033] The drive motor 121 is started to drive the mixing turret 130 to rotate. Under the action of the transmission group 123, the transmission ratchet 122 and the mixing turret 130 rotate synchronously. Under the action of the transmission ratchet 122 and the outer ratchet ring 120, the outer ratchet ring 120 rotates, so that the mixing cylinder 107 and the mixing turret 130 both rotate, and the rotation directions of the mixing cylinder 107 and the mixing turret 130 are opposite. At this time, the drive motor 121 is started to drive the mixing turret 130 to rotate in the opposite direction. Since the outer ratchet ring 120 and the drive motor 121 constitute a ratchet mechanism, the outer ratchet ring 120 does not rotate at this time, and the transmission ratchet 122 rotates relative to the outer ratchet ring 120, that is, the mixing turret 130 rotates relative to the mixing cylinder 107.

[0034] A limiting slide 118 is slidably mounted on the mixing cylinder 107, a fan-shaped sealing slide 124 is fixedly mounted on the limiting slide 118, the fan-shaped sealing slide 124 and the mixing cylinder 107 are slidably matched, a locking unit is arranged between the limiting slide 118 and the mixing cylinder 107, the locking unit comprises two limiting circular plates 126, the two limiting circular plates 126 are symmetrically rotatably mounted on the end surface of the mixing cylinder 107 farthest from the outer ratchet ring 120, a torsion spring is arranged between the limiting circular plate 126 and the mixing cylinder 107, one end of the torsion spring is fixedly connected to the limiting circular plate 126, the other end of the torsion spring is fixedly connected to the mixing cylinder 107, the limiting circular plate Sector-shaped limit strips 127 are fixedly provided on 126, and the circumferential direction of the sector-shaped limit strips 127 and the corresponding limit circular plates 126 are the same. Both sides of the limit slide 118 are provided with sliding grooves that cooperate with the sector-shaped limit strips 127. A plurality of teeth are evenly and fixedly provided on the limit circular plates 126. An annular push plate 113 is slidably installed on the end surface of the mixing cylinder 107 closest to the auxiliary covering cylinder 111, and a spring is provided between the annular push plate 113 and the mixing cylinder 107. A limit rack 125 is symmetrically fixedly provided on the annular push plate 113, and the limit rack 125 is engaged with the corresponding limit circular plate 126 to form a gear rack pair.

[0035] In the initial position, the fan-shaped sealing slide 124 and the mixing cylinder 107 are in a fully engaged state, the fan-shaped limiting strip 127 on the limiting circular plate 126 and the slide groove on the limiting slide 118 are in an engaged state, the spring between the annular push plate 113 and the mixing cylinder 107 and the torsion spring between the limiting circular plate 126 and the mixing cylinder 107 are not compressed, that is, under the action of the fan-shaped limiting strip 127, the position of the limiting slide 118 is locked, and a sealed chamber is formed between the fan-shaped sealing slide 124 and the mixing cylinder 107, and at this time, the arc surface of the fan-shaped sealing slide 124 closest to the axis of the mixing cylinder 107 and the circumferential surface inside the mixing cylinder 107 are on the same circumferential surface.

[0036] The annular push plate 113 is pushed to move toward the outer ratchet ring 120, and the spring between the annular push plate 113 and the mixing cylinder 107 is compressed, so that the two limit racks 125 are moved toward the outer ratchet ring 120. Under the action of the limit racks 125, the two limit circular plates 126 are rotated, so that the two fan-shaped limit strips 127 are moved, and finally the fan-shaped limit strips 127 on the limit circular plate 126 are disengaged from the slide groove on the limit slide 118, thereby releasing the lock on the position of the limit slide 118.

[0037] A fan-shaped strip funnel 117 is fixedly mounted on the outer surface of the mixing cylinder 107. The end surface of the fan-shaped strip funnel 117 closest to the axis of the mixing cylinder 107 is engaged with the sliding connection between the mixing cylinder 107 and the fan-shaped sealing slide plate 124. A fan-shaped scraper 128 is slidably mounted on the fan-shaped strip funnel 117. The surface of the fan-shaped scraper 128 closest to the axis of the mixing cylinder 107 is on the same circumferential surface as the circumferential surface of the mixing cylinder 107 farthest from the axis of the mixing cylinder 107. A scraping screw 129 is rotatably mounted on the fan-shaped strip funnel 117. The fan-shaped scraper 128 and the scraping screw 129 form a spiral pair, a scraping motor 119 is fixedly installed on the outer surface of the fan-shaped long funnel 117, the output shaft of the scraping motor 119 is fixedly connected to the scraping screw 129, and a fan-shaped baffle 108 is fixedly installed on the mixing support frame 106, the axis of the fan-shaped baffle 108 and the axis of the mixing cylinder 107 are in the same straight line, the surface of the fan-shaped long funnel 117 that is close to the axis of the mixing cylinder 107 and the arc surface of the fan-shaped baffle 108 that is closest to the axis of the mixing cylinder 107 are on the same circumferential surface.

[0038] A transposition slide 102 is slidably mounted on the bottom plate 101, and three storage boxes 103 are fixedly mounted on the transposition slide 102. The three storage boxes 103 are respectively used to store powder materials whose particle size meets the requirements after mixing, powder materials whose particle size does not meet the requirements after mixing, and powder materials whose particle size does not meet the requirements before mixing. A transposition screw rod 105 is rotatably mounted on the bottom plate 101, and the transposition screw rod 105 and the bottom plate 101 form a spiral pair. A transposition motor 104 is fixedly mounted on the bottom plate 101, and the output shaft of the transposition motor 104 is fixedly connected to the transposition screw rod 105.

[0039] An auxiliary component is also provided on the bottom plate 101, and the auxiliary component includes an auxiliary supporting cylinder 114, on which a fan-shaped frame plate 140 and a plurality of fan-shaped screen plates 139 are slidably mounted, the screen slit widths of the plurality of fan-shaped screen plates 139 are all different, the fan-shaped frame plate 140 and the plurality of fan-shaped screen plates 139 are arranged in an orderly manner relative to the circumference of the axis of the auxiliary supporting cylinder 114, the fan-shaped sealing slide plate 124, the fan-shaped screen plate 139 and the fan-shaped frame plate 140 have the same outer dimensions, the fan-shaped screen plate 139 and the fan-shaped frame plate 140 are both fixedly provided with fan-shaped strips on the end surfaces closest to the mixing cylinder 107, and the fan-shaped sealing slide plate 124 is provided with a fan-shaped groove cooperating with the fan-shaped strips on the end surface closest to the auxiliary covering cylinder 111.

[0040] An auxiliary covering cylinder 111 is slidably mounted on the bottom plate 101, and an annular push plate 112 is fixedly mounted on the end surface of the auxiliary covering cylinder 111 closest to the mixing cylinder 107. The annular push plate 112 is used to push the annular push plate 2 113 to move. A feed screw 116 is rotatably mounted on the bottom plate 101, and the feed screw 116 and the auxiliary covering cylinder 111 form a spiral pair. A feed motor 110 is fixedly mounted on the bottom plate 101, and the output shaft of the feed motor 110 is fixedly connected to the auxiliary covering cylinder 111. An auxiliary slide 115 is slidably mounted on the auxiliary covering cylinder 111. An auxiliary screw rod 131 is rotatably mounted on the cover cylinder 111, and the auxiliary slide 115 and the auxiliary screw rod 131 constitute a spiral pair. The auxiliary support cylinder 114 is rotatably mounted on the auxiliary slide 115, and a calling motor 133 is fixedly mounted on the auxiliary slide 115, and the output shaft of the calling motor 133 is fixedly connected to the auxiliary support cylinder 114. An auxiliary motor 132 is fixedly mounted on the auxiliary covering cylinder 111, and the output shaft of the auxiliary motor 132 is fixedly connected to the auxiliary screw rod 131, and the axes of the mixing cylinder 107, the auxiliary covering cylinder 111, and the auxiliary support cylinder 114 are all in the same straight line.

[0041] A rotating ring plate 138 is rotatably mounted on the auxiliary support cylinder 114, a rotating gear ring 136 is fixedly mounted on the rotating ring plate 138, a rotating motor 134 is fixedly mounted on the auxiliary slide 115, a rotating gear 135 is fixedly mounted on the output shaft of the rotating motor 134, the rotating gear 135 and the rotating gear ring 136 form a spiral pair, the rotating ring plate 138 is movably connected to the auxiliary covering cylinder 111, and the end face of the auxiliary covering cylinder 111 farthest from the rotating ring plate 138 is The circumferential surface on the auxiliary support cylinder 114 that is farthest from the axis of the auxiliary support cylinder 114 is on the same circumferential surface, the surface of the fan-shaped frame plate 140 that is farthest from the axis of the auxiliary support cylinder 114 and the circumferential surface on the auxiliary support cylinder 114 that is farthest from the axis of the auxiliary support cylinder 114 are on the same circle, and a storage chamber is formed between the auxiliary covering cylinder 111, the auxiliary support cylinder 114, and the rotating ring plate 138.

[0042] The rotating ring plate 138 is fixedly provided with a fan-shaped auxiliary strip plate 141, the rotating ring plate 138 is slidably mounted with a fan-shaped push plate 109, the rotating ring plate 138 is rotatably mounted with a switching screw rod 143, the rotating ring plate 138 is fixedly mounted with a switching motor 137, the output shaft of the switching motor 137 is fixedly connected to the switching screw rod 143, and the fan-shaped auxiliary strip plate 141 and the fan-shaped push plate 109 are connected to form a complete ring plate, and the fan-shaped screen plate 139 and The sector frame plate 140 is fixedly provided with a limit block 142, and the limit block 142 is provided with an arc-shaped slide groove cooperating with the sector auxiliary strip 141. When the sector auxiliary strip 141 and the limit block 142 are engaged, the limit block 142 cannot move relative to the limit block 142 in the direction close to the mixing cylinder 107. When the sector push plate 109 and the limit block 142 are engaged, the limit block 142 also cannot move in the direction close to the mixing cylinder 107.

[0043] Working principle: Start the driving motor 121, and under the action of the outer ratchet ring 120, the transmission ratchet 122, and the transmission group 123, the mixing cylinder 107 and the mixing rotating frame 130 are rotated, and finally the fan-shaped long strip funnel 117 is rotated to the position farthest from the lower surface of the bottom plate 101. At this time, the opening of the fan-shaped long strip funnel 117 faces upward, and then the feed motor 110 is started to drive the feed screw 116 to rotate, so that the auxiliary covering cylinder 111 moves toward the mixing cylinder 107, and the annular push plate 112 moves synchronously, and finally the annular push plate 112 contacts the annular push plate 2 113 and pushes the annular push plate 2 113 to move toward the outer ratchet ring 120, and then under the action of the limit rack 125 and the limit circular plate 126, the fan-shaped limit strip plate 127 releases the lock on the limit slide 118, and the torsion spring between the limit circular plate 126 and the mixing cylinder 107 is compressed.

[0044] The calling motor 133 is started again to drive the auxiliary support cylinder 114 to rotate, so that the fan-shaped sieve plate 139 and the fan-shaped frame plate 140 on the auxiliary support cylinder 114 rotate synchronously, and finally the fan-shaped sieve plate 139 of the required sieve gap width moves to the side of the fan-shaped sealing slide plate 124, and then the rotation motor 134 is started to drive the rotation gear 135, so that the rotation gear ring 136 rotates, and the rotation ring plate 138 rotates synchronously, thereby making the fan-shaped push plate 109 and the fan-shaped auxiliary strip plate 141 rotate synchronously, and finally the fan-shaped push plate 109 engages with the limit block 142 on the fan-shaped sieve plate 139. At this time, the limit block 142 disengages from the fan-shaped auxiliary strip plate 141, and then the switching motor 137 is started to drive the switching screw rod 143 to rotate, so that the fan-shaped push plate 109 moves away from the switching motor 137. The fan-shaped sieve plate 139 moves in the same direction under the action of the limit block 142 on the fan-shaped sieve plate 139, and finally the surface of the fan-shaped strip on the fan-shaped sieve plate 139 closest to the mixing cylinder 107 and the surface of the fan-shaped groove on the fan-shaped sealing slide plate 124 farthest from the auxiliary covering cylinder 111 are on the same plane, and then the calling motor 133 and the rotation motor 134 are started to make the auxiliary support cylinder 114 and the rotation ring plate 138 rotate synchronously, that is, the fan-shaped strip on the fan-shaped sieve plate 139 and the fan-shaped groove on the fan-shaped sealing slide plate 124 are engaged, and finally the fan-shaped strip on the fan-shaped sieve plate 139 and the fan-shaped groove on the fan-shaped sealing slide plate 124 are fully engaged, at this time, the projection of the fan-shaped sieve plate 139 and the fan-shaped sealing slide plate 124 relative to the end face of the mixing cylinder 107 coincides.

[0045] Then continue to start the switching motor 137 to drive the fan-shaped screen plate 139 to continue moving towards the direction close to the outer ratchet ring 120, and under the action of the fan-shaped screen plate 139, the limiting slide 118 and the fan-shaped sealing slide 124 move synchronously, and finally the fan-shaped sealing slide 124 is disengaged from the mixing cylinder 107 and the fan-shaped screen plate 139 and the mixing cylinder 107 are in a fully engaged state, and at this time, the limiting slide 118 is still in an engaged state with the mixing cylinder 107.

[0046] At this time, the raw materials to be mixed are added into the fan-shaped long strip funnel 117. Under the action of the fan-shaped screen plate 139, the raw materials are screened. The raw materials whose particle size does not meet the requirements remain on the upper surface of the fan-shaped screen plate 139, and the raw materials whose particle size meets the requirements enter the mixing cylinder 107. The scraping motor 119 is started to drive the scraping screw 129 to rotate, so that the fan-shaped scraper 128 slides on the inside of the fan-shaped long strip funnel 117. Under the action of the fan-shaped scraper 128, the raw materials accumulated on the upper surface of the fan-shaped screen plate 139 are scraped to avoid the accumulation of raw materials on the upper surface of the fan-shaped screen plate 139 and the blockage of the screen seam of the fan-shaped screen plate 139.

[0047] After the addition of the raw materials is completed, the above steps are reversed to make the fan-shaped screen plate 139, the limiting slide 118, and the fan-shaped sealing slide plate 124 return to the initial position. When the fan-shaped screen plate 139 moves away from the mixing cylinder 107, the fan-shaped sealing slide plate 124 moves synchronously under the action of the fan-shaped strips and the fan-shaped slide grooves. At this time, the fan-shaped sealing slide plate 124 and the mixing cylinder 107 form a sealed chamber, and the raw materials that do not meet the particle size requirements after the fan-shaped screen plate 139 is screened are still present in the fan-shaped sealing slide plate 124. The annular push plate 112 is released from the pressing of the annular push plate 2 113, and under the action of the limiting rack 125 and the limiting circular plate 126, the fan-shaped limiting strip plate 127 is re-engaged with the limiting slide 118, that is, the position of the fan-shaped sealing slide plate 124 is locked, and then the transposition motor 104 is started to drive the transposition screw rod 105 to rotate, that is, the transposition slide plate 102 is moved, and finally the storage box 103 for storing the raw materials whose particle size does not meet the requirements before mixing is moved to the right below the mixing cylinder 107, and then the drive motor is started. 121, driving the mixing cylinder 107 to rotate, so that the fan-shaped long strip funnel 117 rotates toward the direction of the fan-shaped baffle plate 108, and finally the surface of the fan-shaped long strip funnel 117 farthest from the axis of the mixing cylinder 107 is engaged with the surface of the fan-shaped baffle plate 108 closest to the axis of the mixing cylinder 107. Under the action of the fan-shaped baffle plate 108, the raw materials between the fan-shaped long strip funnel 117 and the fan-shaped sealing slide plate 124 will not fall around, and the mixing cylinder 107 continues to rotate, so that the opening of the fan-shaped long strip funnel 117 faces downward At this time, the fan-shaped long funnel 117 gradually breaks away from the contact with the fan-shaped baffle plate 108, and the raw materials between the fan-shaped long funnel 117 and the fan-shaped sealing slide plate 124 fall into the storage box 103 below, and finally the fan-shaped long funnel 117 is in a vertical downward state, and then the scraping motor 119 is started to drive the fan-shaped scraper 128 to scrape the fan-shaped long funnel 117 and the fan-shaped sealing slide plate 124, so that the raw materials between the fan-shaped long funnel 117 and the fan-shaped sealing slide plate 124 completely fall into the storage box 103 below.

[0048] After completing the above steps, start the driving motor 121 to drive the mixing cylinder 107 and the mixing rack 130 to rotate continuously. Under the action of the mixing rack 130, the powder raw materials inside the mixing cylinder 107 are mixed, and the mixing rack 130 contacts the inner surface of the mixing cylinder 107, thereby preventing the powder raw materials from adhering to the inside of the mixing cylinder 107. The mixing cylinder 107 rotates, causing the raw materials to roll inside the mixing cylinder 107, thereby improving the mixing effect of the powder raw materials.

[0049] After the mixing of the powder raw materials is completed, the drive motor 121 is started to drive the mixing cylinder 107 to rotate, so that the fan-shaped long funnel 117 moves to the position closest to the lower surface of the bottom plate 101. At this time, the opening of the fan-shaped long funnel 117 is vertically downward, and then the transposition motor 104 is started to drive the transposition slide plate 102 to move, so that the storage box 103 for storing the powder with the required particle size after mixing is moved to the bottom of the mixing cylinder 107, and then the above steps are repeated to make the fan-shaped sieve plate 139 with the required sieve gap width move to engage with the mixing cylinder 107. At this time, the mixed powder inside the mixing cylinder 107 falls into the storage box 103 below through the sieve gap of the fan-shaped sieve plate 139, and the drive motor 121 is started to drive the mixing rotary frame 130 to rotate relative to the mixing cylinder 107. At this time, the mixing cylinder 107 will not rotate. Under the action of the mixing rotary frame 130, the raw materials are prevented from causing the sieve gap of the fan-shaped sieve plate 139 to be blocked.

[0050] After the mixed raw materials in the mixing cylinder 107 cannot fall, the above steps are repeated so that the fan-shaped sealing slide plate 124 and the mixing cylinder 107 are engaged, the fan-shaped screen plate 139 returns to the initial position, and then the shifting motor 104 is started to move the storage box 103 storing the powder that does not meet the requirements after mixing to the right below the mixing cylinder 107, and then the fan-shaped frame plate 140 is engaged with the mixing cylinder 107. Under the action of the fan-shaped frame plate 140, the raw materials in the mixing cylinder 107 that do not meet the requirements after mixing fall into the storage box 103 below.

[0051] Repeat the above steps to achieve continuous mixing of the powder.

[0052] When the fan-shaped sieve plate 139 needs to be inspected and replaced, the auxiliary motor 132 is started to drive the auxiliary screw 131 to rotate, so that the auxiliary slide 115 moves away from the mixing cylinder 107, that is, the auxiliary support cylinder 114 and the rotating ring plate 138 move away from the mixing cylinder 107, and the fan-shaped sieve plate 139 and the fan-shaped frame plate 140 on the auxiliary support cylinder 114 move synchronously, and finally the fan-shaped sieve plate 139 and the fan-shaped frame plate 140 move to the outside of the auxiliary covering cylinder 111, thereby facilitating the inspection and replacement of the fan-shaped sieve plate 139.

[0053] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A powder mixing device for a powder forming machine, comprising a bottom plate (101), characterized in that: The bottom plate (101) is provided with a mixing assembly, which comprises a mixing cylinder (107), a mixing rotating frame (130) is rotatably mounted inside the mixing cylinder (107), a driving unit is arranged between the mixing cylinder (107) and the mixing rotating frame (130), a limiting slide (118) is slidably mounted on the mixing cylinder (107), a fan-shaped sealing slide (124) is fixedly mounted on the limiting slide (118), the fan-shaped sealing slide (124) and the mixing cylinder (107) are slidably matched, and a locking unit is arranged between the limiting slide (118) and the mixing cylinder (107); The bottom plate (101) is also provided with an auxiliary component, which includes an auxiliary support cylinder (114), on which a fan-shaped frame plate (140) and a plurality of fan-shaped screen plates (139) are slidably mounted, a rotating ring plate (138) is rotatably mounted on the auxiliary support cylinder (114), a fan-shaped auxiliary strip plate (141) is fixedly mounted on the rotating ring plate (138), a fan-shaped push plate (109) is slidably mounted on the rotating ring plate (138), and a complete ring plate is formed when the fan-shaped auxiliary strip plate (141) and the fan-shaped push plate (109) are joined, and a limit block (142) is fixedly mounted on the fan-shaped screen plate (139) and the fan-shaped frame plate (140), and an arc-shaped sliding groove cooperating with the fan-shaped auxiliary strip plate (141) is arranged on the limit block (142); The mixing assembly comprises a mixing support frame (106) fixedly mounted on a bottom plate (101), a mixing cylinder (107) rotatably mounted on the mixing support frame (106), a mixing rotating frame (130) and the mixing support frame (106) being rotatably connected, the driving unit comprising an outer ratchet ring (120) and a transmission ratchet (122), the transmission ratchet (122) being rotatably mounted on the mixing support frame (106), the outer ratchet ring (120) being fixedly mounted on an end surface of the mixing cylinder (107), a transmission group (123) being arranged between the transmission ratchet (122) and the mixing rotating frame (130), and the outer ratchet ring (120) and the transmission ratchet (122) being engaged to form a ratchet mechanism; The locking unit comprises two limiting circular plates (126), the two limiting circular plates (126) being symmetrically rotatably mounted on the end surface of the mixing cylinder (107) which is farthest from the outer ratchet ring (120), a torsion spring being arranged between the limiting circular plates (126) and the mixing cylinder (107), a fan-shaped limiting strip plate (127) being fixedly arranged on the limiting circular plates (126), a slide groove cooperating with the fan-shaped limiting strip plate (127) being arranged on both sides of the limiting slide (118), and a plurality of teeth being evenly fixedly arranged on the limiting circular plates (126).

2. A powder mixing device for a powder forming machine according to claim 1, characterized in that: A fan-shaped long strip funnel (117) is fixedly mounted on the outer surface of the mixing cylinder (107); the end surface of the fan-shaped long strip funnel (117) closest to the axis of the mixing cylinder (107) is engaged with the sliding connection between the mixing cylinder (107) and the fan-shaped sealing slide plate (124); a fan-shaped scraper (128) is slidably mounted on the fan-shaped long strip funnel (117); the surface of the fan-shaped scraper (128) closest to the axis of the mixing cylinder (107) and the circumferential surface of the mixing cylinder (107) farthest from the axis of the mixing cylinder (107) are on the same circumferential surface; a scraping screw (129) is rotatably mounted on the fan-shaped long strip funnel (117); the fan-shaped scraper (128) and the scraping screw (129) form a spiral pair.

3. A powder mixing device for a powder forming machine according to claim 2, characterized in that: A transposition slide plate (102) is slidably mounted on the bottom plate (101), three storage boxes (103) are fixedly mounted on the transposition slide plate (102), a transposition screw rod (105) is rotatably mounted on the bottom plate (101), and the transposition screw rod (105) and the bottom plate (101) form a spiral pair.

4. A powder mixing device for a powder forming machine according to claim 3, characterized in that: An auxiliary covering cylinder (111) is slidably mounted on the bottom plate (101), a feed screw (116) is rotatably mounted on the bottom plate (101), the feed screw (116) and the auxiliary covering cylinder (111) form a spiral pair, an auxiliary slide (115) is slidably mounted on the auxiliary covering cylinder (111), an auxiliary screw (131) is rotatably mounted on the auxiliary covering cylinder (111), the auxiliary slide (115) and the auxiliary screw (131) form a spiral pair, the auxiliary supporting cylinder (114) is rotatably mounted on the auxiliary slide (115), and the axes of the mixing cylinder (107), the auxiliary covering cylinder (111), and the auxiliary supporting cylinder (114) are all on the same straight line.

5. A powder mixing device for a powder forming machine according to claim 4, characterized in that: An annular push plate 2 (113) is slidably mounted on the end surface of the mixing cylinder (107) closest to the auxiliary covering cylinder (111); a limit rack (125) is symmetrically fixedly arranged on the annular push plate 2 (113); the limit rack (125) is engaged with the corresponding limit circular plate (126) to form a gear rack pair; an annular push plate 1 (112) is fixedly mounted on the end surface of the auxiliary covering cylinder (111) closest to the mixing cylinder (107); the annular push plate 1 (112) is used to push the annular push plate 2 (113) to move.

6. A powder mixing device for a powder forming machine according to claim 5, characterized in that: The rotating ring plate (138) and the auxiliary covering cylinder (111) are movably connected; the circumferential surface on the end surface of the auxiliary covering cylinder (111) farthest from the rotating ring plate (138) and the circumferential surface on the auxiliary supporting cylinder (114) farthest from the axis of the auxiliary supporting cylinder (114) are on the same circumferential surface; the surface of the fan-shaped frame plate (140) farthest from the axis of the auxiliary supporting cylinder (114) and the circumferential surface on the auxiliary supporting cylinder (114) farthest from the axis of the auxiliary supporting cylinder (114) are on the same circumference.

7. A powder mixing device for a powder forming machine according to claim 6, characterized in that: The one fan-shaped frame plate (140) and the plurality of fan-shaped screen plates (139) are arranged in a circle with respect to the axis of the auxiliary support cylinder (114); the fan-shaped screen plate (139) and the fan-shaped frame plate (140) are fixedly provided with fan-shaped strips on their end surfaces closest to the mixing cylinder (107); the fan-shaped sealing slide plate (124) is provided with fan-shaped grooves cooperating with the fan-shaped strips on its end surface farthest from the auxiliary covering cylinder (111); and the fan-shaped sealing slide plate (124), the fan-shaped screen plate (139) and the fan-shaped frame plate (140) are all of the same external dimensions.

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