Oven lamp cup forming die and forming process thereof

Abstract

The invention relates to the technical field of oven lamp cup forming dies, in particular to an oven lamp cup forming die and a forming process thereof.The oven lamp cup forming die comprises an upper die body, a lower die body and a plurality of reset parts, a material plate is arranged between the upper die body and the lower die body in an intermittent displacement mode, the reset parts contract when the upper die body and the lower die body are closed, and the reset parts jack the material plate to the preset height when the upper die body and the lower die body are opened; the resetting piece comprises two elastic resetting rods which are vertically arranged, an upper roller and a lower roller which are connected with the top ends of the elastic resetting rods and are horizontally arranged up and down, and a side roller which is arranged in a gap between the upper roller and the lower roller; the front side and the rear side of the material plate are inserted into the two gaps correspondingly and abut against the two side rollers correspondingly. According to the invention, the elastic knocking rods can vertically and upwards impact the transverse plate, and the acting force of the elastic knocking rods on the transverse plate is directly transmitted to the material plate, so that the material plate can be gradually separated from the lower die under the action of the impact force, the material plate is prevented from being blocked, and the continuous work of the oven lamp cup forming die is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of oven lamp cup forming moulds, in particular to an oven lamp cup forming mould and a forming process thereof. Background Art

[0002] The forming of the oven lamp cup is generally completed by a continuous stamping die. Continuous stamping is to transfer the metal sheet from the material roll to the inside of the die in sequence, and finally form it into the required parts or products after a series of continuous stamping processes, including cutting, bending, extrusion and other deformations. This process mainly relies on the cutting and bending of the die to form the required shape and size.

[0003] For example, a Chinese patent document with the announcement number CN208960802U discloses a lamp cup forming mold, which relates to the technical field of stamping forming molds and solves the technical problem of excessive waste of material plates. Its technical points include an upper die seat and a lower die seat, and a splitting column assembly, a lamp cup forming column assembly and an upper processing piece are arranged on the lower surface of the upper die seat along the length direction of the upper die seat, and a splitting cavity assembly, a lamp cup forming cavity assembly and a lower processing piece are arranged on the upper surface of the lower die seat along the length direction of the lower die seat; wherein, when the upper die seat and the lower die seat are combined, the part of the material plate between the splitting cavity assembly and the splitting column assembly will be cut out of the forming area, the forming area cut and formed by the splitting cavity assembly and the splitting column assembly and between the lamp cup forming cavity assembly and the lamp cup forming column assembly will be stamped, and the lamp cup that is stamped and formed and between the lower processing piece and the upper processing piece will be stamped out with a lower end opening and separated from the material plate; the utility model has the advantage of reducing the waste of material plates.

[0004] In this technical solution, the material sheet is lifted to a predetermined height after stamping through the cooperation of the "third spring" and the "guide rod". During the lifting process, once the part of the material sheet that is punched into the cavity of the lower die is stuck inside the cavity, the material sheet cannot be lifted up, resulting in the interruption of the entire stamping process and affecting actual production. Summary of the invention

[0005] The object of the present invention is to provide an oven lamp cup forming mold and a forming process thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The oven lamp cup forming mold comprises an upper mold, a lower mold and a plurality of reset parts. The material plate is intermittently displaced and arranged between the upper mold and the lower mold. The reset parts shrink when the upper mold and the lower mold are closed, and the reset parts lift the material plate to a predetermined height when the upper mold and the lower mold are opened. The reset parts comprise two vertically arranged elastic reset rods, an upper roller and a lower roller connected to the top end of the elastic reset rod and arranged horizontally in upper and lower positions, and a side roller arranged in the gap between the upper roller and the lower roller.

[0008] The front and rear sides of the material plate are respectively inserted into the two gaps and abut against the two side rollers;

[0009] A material stripping piece is arranged between the elastic reset rod and the upper roller and the lower roller, and the material stripping piece is used to impact the material plate upwards when the material plate is stuck in the lower die;

[0010] The material stripping member comprises a shell fixedly connected to the upper roller and the lower roller, a horizontal plate fixedly arranged just above the shell, a horizontal shaft coaxially and rotatably penetrating the shell, an elastic knocking rod arranged inside the shell and fixedly connected to the horizontal shaft, and a driving mechanism for driving the horizontal shaft to rotate;

[0011] The two ends of the horizontal axis are rotatably connected to the top of the elastic reset rod and the lower roller respectively;

[0012] A through hole is provided on the top of the shell;

[0013] The elastic knocking rod is arranged along the radial direction of the shell, and the inner circumferential surface of the shell is used to limit the elastic knocking rod so that the elastic knocking rod is kept in a retracted state. When the free end of the elastic knocking rod rotates to the through hole position, the elastic knocking rod changes from a retracted state to an extended state, and its free end vertically hits the cross plate upward.

[0014] Preferably, the driving mechanism includes a gear and a rack, the gear is rotatably sleeved on the horizontal shaft through a one-way bearing, the rack and the gear are meshed, and the top end of the rack is fixedly connected to the upper mold;

[0015] When the sheet is stuck in the lower die, the rack will drive the gear and the horizontal shaft to rotate as the upper die moves upward.

[0016] Preferably, the end surface of the free end of the elastic knocking rod includes a top plane and a second inclined surface;

[0017] The inner surface of the through hole corresponding to the second inclined surface is provided with a first inclined surface;

[0018] When the elastic knocking rod is in an extended state, the height of the low end of the second inclined surface is lower than the height of the high end of the first inclined surface.

[0019] Preferably, the elastic knocking rod comprises a second outer tube, a second guide sleeve and a second bottom plate fixedly arranged at both ends of the second outer tube, a second slider and a second spring arranged inside the second outer tube, and a second guide rod slidingly passing through the second guide sleeve;

[0020] The second bottom plate is fixedly connected to the horizontal axis via a fixing sleeve;

[0021] The top end of the second guide rod is the free end of the elastic knocking rod, and the bottom end of the second guide rod is fixedly connected to the second sliding block;

[0022] The second outer cylinder is provided with a second strip-shaped hole parallel to the axial direction thereof.

[0023] Preferably, a boost block is fixed to the inner circumferential surface of the housing, and a side surface of the boost block close to the horizontal axis is an arc-shaped surface;

[0024] In a direction gradually approaching the through hole, the distance between the arc surface and the horizontal axis gradually decreases.

[0025] Preferably, the housing comprises a cylinder and end plates fixed at both ends of the cylinder;

[0026] The booster block is fixed on the inner circumference of the cylinder.

[0027] Preferably, the material stripping member further comprises a vertical plate, the ends of the upper roller and the lower roller are fixedly connected to the vertical plate, the horizontal plate is fixedly connected to the vertical plate, and the outer shell is fixedly connected to the vertical plate via a connecting rod.

[0028] Preferably, the elastic reset rod comprises a first outer cylinder whose bottom end is fixedly connected to the lower mold, a first guide sleeve and a first bottom plate fixed at the upper and lower ends of the first outer cylinder, a first guide rod slidingly passing through the first guide sleeve, a first slider and a first spring arranged inside the first outer cylinder;

[0029] Both ends of the horizontal axis are rotatably connected to the top end of the first guide rod and the vertical plate through the bearing seat;

[0030] The bottom end of the first guide rod is fixedly connected to the first sliding block;

[0031] A first strip-shaped hole is formed on the side surface of the first outer cylinder.

[0032] The oven lamp cup forming process is based on the oven lamp cup forming mold, and comprises the following steps:

[0033] S1. Assemble the sheet between the upper roller and the lower roller;

[0034] S2. Use the hydraulic cylinder to drive the upper die to perform reciprocating lifting and lowering movements, so that the material plate is continuously punched by the upper die and the lower die, and the oven lamp cup is gradually formed;

[0035] S21, during the closing process of the upper mold and the lower mold, the material plate is clamped between the upper mold and the lower mold; during the opening process of the upper mold and the lower mold, the material plate is lifted to a predetermined height by the reset member;

[0036] S22. When the material plate is stuck in the lower die and cannot be lifted to a predetermined height by the reset member, the rack moves upward with the upper die, causing the gear and the horizontal axis to rotate, thereby driving the elastic knocking rod to rotate inside the shell. When the free end of the elastic knocking rod rotates to the through-hole position, the elastic knocking rod changes from a contracted state to an extended state, and its free end vertically strikes the horizontal plate upward. The impact force generated by the elastic knocking rod is transmitted to the material plate through the upper roller and the lower roller, causing the material plate to gradually separate from the lower die.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The present invention utilizes a shell to constrain a plurality of elastic knocking rods arranged inside the shell, so that the elastic knocking rods are always in a contracted state, and then the elastic knocking rods release their own elastic force through the through holes opened on the shell, and because the through holes are arranged at the top of the shell, the elastic knocking rods can release their own elastic force vertically upward, and then cooperate with the cross plate to make the elastic knocking rods hit the cross plate vertically upward, and because the cross plate and the material plate are fixedly connected in the vertical direction, the force of the elastic knocking rod hitting the cross plate will be directly transmitted to the material plate, so that the material plate can gradually separate from the lower mold under the action of the impact force, avoiding the material plate from getting stuck, which is beneficial to the continuous operation of the oven lamp cup forming mold.

[0039] 2. The present invention sets gears and racks, and makes the gears rotatably sleeved on the horizontal axis through a one-way bearing, so that only when the material plate is stuck on the lower mold, the material stripping part will start to work and generate intermittent and vertical upward impact force on the material plate, so that the material plate can gradually separate from the lower mold. The overall structure is simple, and the staff can also judge the state of the material plate according to whether the mold produces an impact sound, so as to deal with it in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0041] Figure 2 It is a front view structural schematic diagram of the present invention;

[0042] Figure 3 It is a three-dimensional structural schematic diagram of the reset part and the material stripping part of the present invention;

[0043] Figure 4 For the present invention Figure 3 Schematic diagram of the left view structure;

[0044] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of the cross-section at the center;

[0045] Figure 6 For the present invention Figure 4 Schematic diagram of the local structure;

[0046] Figure 7 For the present invention Figure 3 Schematic diagram of the local structure;

[0047] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the elastic reset rod of the present invention;

[0048] Fig. 9 It is a schematic diagram of the three-dimensional structure of the material stripping part of the present invention;

[0049] Fig.10 It is a schematic diagram of the structure of the vertical plate and the shell of the present invention;

[0050] Fig.11 It is a schematic diagram of the internal structure of the housing of the present invention;

[0051] Fig.12 It is a schematic diagram of a cross-sectional three-dimensional structure of the elastic knocking rod of the present invention;

[0052] Fig.13 It is a schematic diagram of the cross-sectional three-dimensional structure of the cylinder of the present invention;

[0053] Fig.14 For the present invention Fig.11 A schematic diagram of the front view structure of

[0054] Fig.15 For the present invention Fig.13 A schematic diagram of the front view structure of

[0055] Fig.16 For the present invention Fig.15 Enlarged structural diagram at B in the middle.

[0056] In the figure: 1, upper die; 2, lower die; 3, material plate; 4, reset member; 41, lower roller; 411, strip groove; 42, upper roller; 43, side roller; 44, elastic reset rod; 441, first outer cylinder; 442, first strip hole; 443, first guide sleeve; 444, first bottom plate; 445, first guide rod; 446, first slider; 447, first spring; 45, gap; 5, material removal member; 51, vertical plate; 511, connecting rod; 52, horizontal axis; 521, bearing seat; 522, fixing sleeve; 53, horizontal Plate; 54, gear; 541, one-way bearing; 55, housing; 551, cylinder; 552, end plate; 553, through hole; 554, first inclined surface; 56, rack; 561, reinforcing support plate; 57, elastic knocking rod; 571, second outer cylinder; 572, second strip hole; 573, second guide sleeve; 574, second bottom plate; 575, second guide rod; 5751, top plane; 5752, second inclined surface; 576, second slider; 577, second spring; 58, booster block; 581, arc surface. DETAILED DESCRIPTION

[0057] 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.

[0058] See also Figure 1-Figure 16, the present invention provides a technical solution:

[0059] The oven lamp cup forming mold includes an upper mold 1, a lower mold 2 and a plurality of reset parts 4. The material plate 3 is intermittently displaced and arranged between the upper mold 1 and the lower mold 2. When the upper mold 1 and the lower mold 2 are closed, the reset parts 4 contract, so that the reset parts 4 generate an upward elastic force. When the upper mold 1 and the lower mold 2 are opened, the reset parts 4 use the elastic force generated by their contraction to lift the material plate 3 to a predetermined height. The above are all prior arts and will not be elaborated here.

[0060] The reset member 4 in the present invention comprises two vertically arranged elastic reset rods 44, an upper roller 42 and a lower roller 41 connected to the top of the elastic reset rod 44 and arranged horizontally in upper and lower positions, and a side roller 43 arranged in the gap 45 between the upper roller 42 and the lower roller 41; specifically, the side roller 43, the upper roller 42 and the lower roller 41 can be made of hard plastic or stainless steel and other materials, and their surfaces are smooth to reduce the friction between the material sheet 3 and the side rollers 43, the upper roller 42 and the lower roller 41; the upper and lower sides of the material sheet 3 are respectively connected to the upper roller 42 It is in contact with the lower roller 41, and the front and rear sides of the material sheet 3 are respectively inserted in the two gaps 45 and respectively abut against the two side rollers 43; the bottom end of the elastic reset rod 44 is installed on the mold base of the lower mold 2, and the installation positions of the two elastic reset rods 44 can be selected according to actual conditions, so that the spacing between the two side rollers 43 can be adapted to the width of the material sheet 3; further, a strip groove 411 is opened on the top of the lower roller 41, the top end of the side roller 43 is fixedly connected to the upper roller 42, and the bottom end is inserted into the inside of the strip groove 411.

[0061] Furthermore, the elastic reset rod 44 includes a first outer cylinder 441 whose bottom end is fixedly connected to the lower mold 2, a first guide sleeve 443 and a first bottom plate 444 fixed at the upper and lower ends of the first outer cylinder 441, a first guide rod 445 slidingly passing through the first guide sleeve 443, a first slider 446 and a first spring 447 arranged inside the first outer cylinder 441; wherein the first outer cylinder 441, the first guide rod 445 and other structures can be made of materials such as stainless steel, the bottom end of the first guide rod 445 is fixedly connected to the first slider 446, and the two ends of the first spring 447 are respectively fixedly connected to the first slider 446 and the first bottom plate 444; a first strip hole 442 is opened on the side of the first outer cylinder 441, and the two ends of the horizontal axis 52 hereinafter are rotatably connected to the top end of the first guide rod 445 and the vertical plate 51 hereinafter through a bearing seat 521, so that the bearing seat 521 can rotate around its own axis.

[0062] The basic principle of the elastic reset rod 44 is: Figure 1 and 2The elastic reset rod 44 shown is in a contracted state (the first spring 447 is in a contracted state), and the elastic reset rod 44 generates a vertical upward elastic force. At this time, when the upper mold 1 and the lower mold 2 are opened, the material plate 3 loses the limiting effect of the upper mold 1, and the elastic reset rod 44 gradually extends under the action of the elastic force, pushing the material plate 3 to a predetermined height; thereafter, when the upper mold 1 and the lower mold 2 are closed, the upper mold 1 pushes the material plate 3 to gradually move downward, so that the first guide rod 445 pushes the first slider 446 to gradually move downward, so that the first spring 447 gradually contracts until the material plate 3 contacts the lower mold 2, and the first spring 447 is in the shortest state, and then the first spring 447 returns to its original length when the mold is opened, and the cycle continues.

[0063] In order to prevent the elastic force of the elastic reset rod 44 from being unable to push the material sheet 3 to a predetermined height when the material sheet 3 is stuck on the lower mold 2, the present invention provides a material stripping piece 5 between the elastic reset rod 44 and the upper roller 42 and the lower roller 41. The material stripping piece 5 is used to impact the material sheet 3 upward at intervals when the material sheet 3 is stuck on the lower mold 2, thereby utilizing the impact of the material stripping piece 5 to drive the material sheet 3 to gradually separate from the lower mold 2.

[0064] Specifically, the material stripping member 5 includes a shell 55 fixedly connected to the upper roller 42 and the lower roller 41, a horizontal plate 53 fixedly arranged directly above the shell 55, a horizontal axis 52 coaxially and rotatably passing through the shell 55, an elastic knocking rod 57 arranged inside the shell 55 and fixedly connected to the horizontal axis 52, and a driving mechanism for driving the horizontal axis 52 to rotate; wherein the horizontal axis 52 can adopt a bearing to achieve a rotatable and penetrating connection with the shell 55. The two ends of the transverse axis 52 are rotatably connected to the top of the elastic reset rod 44 and the lower roller 41 respectively; a through hole 553 is opened at the top of the shell 55; the elastic knocking rod 57 is arranged along the radial direction of the shell 55, and the inner circumference of the shell 55 is used to limit the elastic knocking rod 57, so that the elastic knocking rod 57 is kept in a retracted state. When the free end of the elastic knocking rod 57 rotates to the position of the through hole 553, the elastic knocking rod 57 is changed from a retracted state to an extended state, and its free end vertically strikes the transverse plate 53 upward. After striking the transverse plate 53, the elastic knocking rod 57 will re-contract and retract into the interior of the shell 55 as the transverse axis 52 rotates, thus forming a striking cycle.

[0065] The outer shell 55 includes a cylinder 551 and end plates 552 fixed at both ends of the cylinder 551; the booster block 58 is fixed to the inner circumference of the cylinder 551. The stripper 5 also includes a vertical plate 51, the ends of the upper roller 42 and the lower roller 41 are fixedly connected to the vertical plate 51, the horizontal plate 53 is fixedly connected to the vertical plate 51, and the outer shell 55 is fixedly connected to the vertical plate 51 through a connecting rod 511.

[0066] In the above scheme, the shell 55 is used to restrain the multiple elastic knocking rods 57 arranged inside it, so that the elastic knocking rods 57 are always in a retracted state, and then the elastic knocking rods 57 are allowed to release their own elastic force through the through holes 553 opened on the shell 55. Since the through holes 553 are arranged at the top of the shell 55, the elastic knocking rods 57 can release their own elastic force vertically upward, and then cooperate with the cross plate 53 to make the elastic knocking rods 57 hit the cross plate 53 vertically upward. Since the cross plate 53 and the material plate 3 are fixedly connected in the vertical direction, the force of the elastic knocking rods 57 hitting the cross plate 53 will be directly transmitted to the material plate 3, so that the material plate 3 can gradually separate from the lower mold 2 under the action of the impact force, thereby avoiding the material plate 3 from getting stuck.

[0067] Furthermore, the driving mechanism includes a gear 54 and a rack 56. The gear 54 is rotatably mounted on the horizontal shaft 52 through a one-way bearing 541. The rack 56 is meshed with the gear 54, and the top of the rack 56 is fixedly connected to the upper mold 1. A reinforcing support plate 561 is fixed on the side of the rack 56 away from the teeth. The reinforcing support plate 561 can improve the structural strength of the rack 56, prevent it from bending and deformation, and ensure that the rack 56 and the gear 54 can always maintain a meshing state. When the material plate 3 is stuck in the lower mold 2, the rack 56 will drive the gear 54 and the horizontal shaft 52 to rotate as it moves upward with the upper mold 1.

[0068] The basic working principle of the cooperation between the driving mechanism and the material stripping piece 5 is as follows: when the material plate 3 is not stuck on the lower mold 2, the material plate 3 at this time will be directly lifted to a predetermined height by the elastic reset rod 44. Since the material stripping piece 5 is arranged between the elastic reset rod 44 and the lower roller 41, when the material plate 3 is lifted to a predetermined height, the material stripping piece 5 will also be lifted to the predetermined height along with the material plate 3. During this process, no transmission is performed between the gear 54 and the rack 56, that is, the gear 54 and the rack 56 are relatively stationary, and the gear 54 will not rotate. Therefore, the driving mechanism and the material stripping piece 5 do not work during this process; and once the material plate 3 is stuck on the lower mold 2, as the upper mold 1 and the lower mold 2 are separated (opened), the rack 56 will rise along with the upper mold 1, and the height of the gear 54 will not change. Therefore, the rise of the rack 56 will drive the gear 54 to rotate. Under the action of the one-way bearing 541, the gear The wheel 54 drives the horizontal axis 52 to rotate together, so that the horizontal axis 52 will drive the elastic knocking rod 57 to rotate inside the shell 55, that is, only when the material plate 3 is stuck, the driving mechanism and the material return part 5 will start to work and generate intermittent and vertical upward impact force on the material plate 3, so that the material plate 3 can gradually separate from the lower mold 2; and in the process of closing the upper mold 1 and the lower mold 2, due to the presence of the one-way bearing 541, the rotation of the gear 54 will not drive the horizontal axis 52 to rotate, so the elastic knocking rod 57 will not hit the material plate 3 during the closing process; therefore, the regular sound generated when the elastic knocking rod 57 hits the horizontal plate 53 can also be used to judge the state of the material plate 3, and the staff can decide whether to deal with the problem of the material plate 3 being stuck based on the sound (as long as the impact sound is generated, it means that the material plate 3 is stuck, and the staff needs to rush to the scene to check the situation). The side rollers 43 , the upper roller 42 and the lower roller 41 are used to limit the position of the material sheet 3 in the up-down, left-right and front-back directions, so as to prevent the material sheet 3 from being displaced under the impact force of the elastic knocking rod 57 .

[0069] In the above scheme, by setting the gear 54 and the rack 56, and making the gear 54 rotatably sleeved on the horizontal shaft 52 through the one-way bearing 541, the material stripping part 5 will start to work and generate intermittent and vertical upward impact force on the material sheet 3 only when the material sheet 3 is stuck on the lower mold 2, so that the material sheet 3 can gradually separate from the lower mold 2. The overall structure is simple, and the staff can also judge the state of the material sheet 3 according to whether the mold produces an impact sound, so as to deal with it in time.

[0070] The basic principle of the elastic knocking rod 57 being able to transform from the extended state to the retracted state and retract into the housing 55 is as follows: the end surface of the free end of the elastic knocking rod 57 includes a top plane 5751 and a second inclined surface 5752; the top plane 5751 is used to contact the bottom surface of the horizontal plate 53 when hitting the horizontal plate 53; the through hole 553 is provided with a first inclined surface 554 on the inner surface corresponding to the second inclined surface 5752; when the elastic knocking rod 57 is in the extended state, the height of the lower end of the second inclined surface 5752 is lower than the height of the higher end of the first inclined surface 554. Fig.15 and Fig.16 As shown, the elastic knocking rod 57 is in the extended state, and the height of the lower end of the second inclined surface 5752 is lower than the height of the higher end of the first inclined surface 554. Therefore, when the elastic knocking rod 57 moves counterclockwise (with the horizontal axis 52) together with the horizontal axis 52, the elastic knocking rod 57 is rotated counterclockwise (with the horizontal axis 52). Fig.15 The elastic knocking rod 57 is a kind of elastic knocking rod having two or more members, and the elastic knocking rod 57 is a kind of elastic knocking rod having two or more members. For example, when the elastic knocking rod 57 is rotated in the direction shown in the figure, the free end of the elastic knocking rod 57 will gradually shrink back into the interior of the shell 55 with the cooperation of the first inclined surface 554 and the second inclined surface 5752, thereby realizing the cyclic impact of the elastic knocking rod 57; further, the elastic knocking rod 57 in the present embodiment can be set as two groups or more. Taking each group of elastic knocking rods 57 as six members, the two elastic knocking rods 57 in different groups are staggered in the axial direction of the horizontal axis 52, so as to increase the frequency of the elastic knocking rod 57 impacting the horizontal plate 53. For example, when there is only one group of elastic knocking rods 57, one elastic knocking rod 57 will impact the horizontal plate 53 for every 60° rotation of the horizontal axis 52, and when there are two groups of elastic knocking rods 57, one elastic knocking rod 57 will impact the horizontal plate 53 for every 30° rotation of the horizontal axis 52.

[0071] The elastic knocking rod 57 includes a second outer tube 571, a second guide sleeve 573 and a second base plate 574 fixedly arranged at both ends of the second outer tube 571, a second slider 576 and a second spring 577 arranged inside the second outer tube 571, and a second guide rod 575 sliding through the second guide sleeve 573; the second base plate 574 is fixedly connected to the transverse axis 52 through a fixed sleeve 522; the top end of the second guide rod 575 is the free end of the elastic knocking rod 57, and the bottom end of the second guide rod 575 is fixedly connected to the second slider 576; the second outer tube 571 is provided with a second strip hole 572 parallel to its axial direction, and the second strip hole 572 is used to ensure the air pressure balance in the upper and lower spaces of the second slider 576.

[0072] Furthermore, in order to increase the impact force of the elastic knocking rod 57 hitting the horizontal plate 53, a booster block 58 is fixed to the inner circumferential surface of the housing 55, and the side of the booster block 58 close to the horizontal axis 52 is an arc surface 581; along the direction gradually approaching the through hole 553, the distance between the arc surface 581 and the horizontal axis 52 gradually decreases, such as Fig.15As shown, under the action of the boost block 58 and the arc surface 581, when the elastic knocking rod 57 rotates counterclockwise, as the top end of the second guide rod 575 gradually approaches the through hole 553, the second spring 577 inside the elastic knocking rod 57 contracts to a greater extent, that is, the elastic force generated by the second spring 577 is greater, so when the second spring 577 is extended, the initial velocity it provides to the second guide rod 575 is also greater, so that the impact force of the second guide rod 575 hitting the cross plate 53 is greater.

[0073] The oven lamp cup forming process is based on the oven lamp cup forming mold mentioned above, and includes the following steps:

[0074] S1, assembling the material sheet 3 between the upper roller 42 and the lower roller 41;

[0075] S2, using a hydraulic cylinder to drive the upper die 1 to perform reciprocating lifting and lowering motion, so that the material plate 3 is continuously stamped by the upper die 1 and the lower die 2, and the oven lamp cup is gradually formed;

[0076] S21, during the closing process of the upper mold 1 and the lower mold 2, the material plate 3 is clamped between the upper mold 1 and the lower mold 2; during the opening process of the upper mold 1 and the lower mold 2, the material plate 3 is lifted to a predetermined height by the reset member 4;

[0077] S22. When the material sheet 3 is stuck in the lower mold 2 and cannot be lifted to a predetermined height by the reset member 4, the rack 56 moves upward with the upper mold 1, causing the gear 54 and the horizontal shaft 52 to rotate, thereby driving the elastic knocking rod 57 to rotate inside the shell 55. When the free end of the elastic knocking rod 57 rotates to the position of the through hole 553, the elastic knocking rod 57 changes from a contracted state to an extended state, and its free end vertically strikes the horizontal plate 53 upward. The impact force generated by the elastic knocking rod 57 is transmitted to the material sheet 3 through the upper roller 42 and the lower roller 41, so that the material sheet 3 is gradually separated from the lower mold 2.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oven lamp cup forming mold, comprising an upper mold, a lower mold and a plurality of reset parts, wherein a material plate can be discontinuously displaced between the upper mold and the lower mold, the reset parts shrink when the upper mold and the lower mold are closed, and the reset parts lift the material plate to a predetermined height when the upper mold and the lower mold are opened, characterized in that: The reset member includes two vertically arranged elastic reset rods, an upper roller and a lower roller connected to the top ends of the elastic reset rods and arranged horizontally in upper and lower positions, and a side roller arranged in the gap between the upper roller and the lower roller; The front and rear sides of the material plate are respectively inserted into the two gaps and abut against the two side rollers; A material stripping piece is arranged between the elastic reset rod and the upper roller and the lower roller, and the material stripping piece is used to impact the material plate upwards when the material plate is stuck in the lower die; The material stripping member comprises a shell fixedly connected to the upper roller and the lower roller, a horizontal plate fixedly arranged just above the shell, a horizontal shaft coaxially and rotatably penetrating the shell, an elastic knocking rod arranged inside the shell and fixedly connected to the horizontal shaft, and a driving mechanism for driving the horizontal shaft to rotate; The two ends of the horizontal axis are rotatably connected to the top of the elastic reset rod and the lower roller respectively; A through hole is provided on the top of the shell; The elastic knocking rod is arranged along the radial direction of the shell, and the inner circumferential surface of the shell is used to limit the elastic knocking rod so that the elastic knocking rod is kept in a retracted state. When the free end of the elastic knocking rod rotates to the through hole position, the elastic knocking rod changes from a retracted state to an extended state, and its free end vertically hits the cross plate upward.

2. The oven lamp cup forming mold according to claim 1, characterized in that: The driving mechanism includes a gear and a rack. The gear is rotatably sleeved on the horizontal shaft through a one-way bearing. The rack is meshed with the gear, and the top of the rack is fixedly connected to the upper mold. When the sheet is stuck in the lower die, the rack will drive the gear and the horizontal shaft to rotate as the upper die moves upward.

3. The oven lamp cup forming mold according to claim 1, characterized in that: The end surface of the free end of the elastic knocking rod includes a top plane and a second inclined surface; The inner surface of the through hole corresponding to the second inclined surface is provided with a first inclined surface; When the elastic knocking rod is in an extended state, the height of the low end of the second inclined surface is lower than the height of the high end of the first inclined surface.

4. The oven lamp cup forming mold according to claim 3, characterized in that: The elastic knocking rod comprises a second outer tube, a second guide sleeve and a second bottom plate fixedly arranged at both ends of the second outer tube, a second slider and a second spring arranged inside the second outer tube, and a second guide rod slidingly passing through the second guide sleeve; The second bottom plate is fixedly connected to the horizontal axis via a fixing sleeve; The top end of the second guide rod is the free end of the elastic knocking rod, and the bottom end of the second guide rod is fixedly connected to the second sliding block; The second outer cylinder is provided with a second strip-shaped hole parallel to the axial direction thereof.

5. The oven lamp cup forming mold according to claim 1, characterized in that: A boost block is fixed on the inner circumference of the shell, and a side surface of the boost block close to the horizontal axis is an arc surface; In a direction gradually approaching the through hole, the distance between the arc surface and the horizontal axis gradually decreases.

6. The oven lamp cup forming mold according to claim 5, characterized in that: The housing includes a cylinder and end plates fixed at both ends of the cylinder; The booster block is fixed on the inner circumference of the cylinder.

7. The oven lamp cup forming mold according to claim 1, characterized in that: The material stripping member also includes a vertical plate, the ends of the upper roller and the lower roller are fixedly connected to the vertical plate, the horizontal plate is fixedly connected to the vertical plate, and the outer shell is fixedly connected to the vertical plate through a connecting rod.

8. The oven lamp cup forming mold according to claim 7, characterized in that: The elastic reset rod comprises a first outer cylinder whose bottom end is fixedly connected to the lower mold, a first guide sleeve and a first bottom plate fixed to the upper and lower ends of the first outer cylinder, a first guide rod slidingly passing through the first guide sleeve, a first slider and a first spring arranged inside the first outer cylinder; Both ends of the horizontal axis are rotatably connected to the top end of the first guide rod and the vertical plate through the bearing seat; The bottom end of the first guide rod is fixedly connected to the first sliding block; A first strip-shaped hole is formed on the side surface of the first outer cylinder.

9. Oven lamp cup forming process, characterized in that: The molding process is based on the oven lamp cup molding mold according to any one of claims 1 to 8, and comprises the following steps: S1. Assemble the sheet between the upper roller and the lower roller; S2. Use the hydraulic cylinder to drive the upper die to perform reciprocating lifting and lowering movements, so that the material plate is continuously punched by the upper die and the lower die, and the oven lamp cup is gradually formed; S21, during the closing process of the upper mold and the lower mold, the material plate is clamped between the upper mold and the lower mold; during the opening process of the upper mold and the lower mold, the material plate is lifted to a predetermined height by the reset member; S22. When the material plate is stuck in the lower die and cannot be lifted to a predetermined height by the reset member, the rack moves upward with the upper die, causing the gear and the horizontal axis to rotate, thereby driving the elastic knocking rod to rotate inside the shell. When the free end of the elastic knocking rod rotates to the through-hole position, the elastic knocking rod changes from a contracted state to an extended state, and its free end vertically strikes the horizontal plate upward. The impact force generated by the elastic knocking rod is transmitted to the material plate through the upper roller and the lower roller, causing the material plate to gradually separate from the lower die.

Images