Hardware mold capable of rapidly cooling for hardware production

Abstract

The invention relates to the technical field of hardware molds, in particular to a hardware mold capable of being rapidly cooled for hardware production, which comprises a supporting assembly, a cooling assembly and a cooling assembly, the positioning assembly comprises a moving plate arranged in the mounting frame, a push rod arranged on one side of the moving plate, a clamping plate arranged at one end of the push rod, a rotating rod arranged in the clamping plate, a moving frame arranged outside the rotating rod and a roller arranged at the bottom of the moving frame. Through mutual cooperation of a positioning assembly, a tension spring, a moving frame and a rotating rod, a roller can conduct center positioning on a hardware material, the situation that due to the structure, the placement position of the hardware material is not accurate, material forming is affected is avoided, by means of a reset assembly, when the upper mold conducts material forming, the positioning assembly can move outwards, and the positioning efficiency is improved. Therefore, the function that hardware material machining and material taking after machining are not affected is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to hardware mold technical field, especially a hardware production can quick cooling hardware mold. BACKGROUND

[0002] Hardware mold is a special tool for processing hardware products (such as metal stamping parts, stretching parts, forging parts, etc.), usually composed of core components such as mold frame, male die, female die, guide device, etc. Through the pressure machine to apply pressure to make the metal plate or bar to occur plastic deformation or separation, so as to batch produce hardware parts that meet the accuracy requirements, widely used in home appliances, automobile, electronic, building and other industries, is the core process equipment of hardware manufacturing.

[0003] The existing stamping device is usually placed directly under the hardware mold during processing, and the stamping function is realized by the stamping machine. However, due to the structure, the hardware material cannot be conveniently centered, which leads to positioning deviation during stamping, and further causes the decline of stamping precision, which not only affects the processing quality of hardware material, but also may cause material waste. SUMMARY

[0004] In view of the above or the problems existing in the prior art, the present application is proposed.

[0005] Therefore, the purpose of the present application is to provide a hardware production can quick cooling hardware mold, comprising, The support assembly comprises a base, an installation frame arranged on the top of the base, a positioning assembly, a moving plate arranged in the installation frame, a push rod arranged on one side of the moving plate, a clamping plate arranged on one end of the push rod, a rotating rod arranged in the clamping plate, a moving frame arranged outside the rotating rod, a roller arranged at the bottom of the moving frame, an installation plate arranged at the top of the moving frame, and a tension spring arranged on one side of the installation plate. One end of the tension spring is fixed to the side surface of the installation plate, and the other end of the tension spring is connected to the inside of the clamping plate. The tension spring drives the installation plate and the moving frame through its tension, so as to reset the position of the roller.

[0006] As a preferred scheme of the present application, the positioning assembly further comprises an auxiliary plate, the auxiliary plate is fixed on one end of the push rod, and the auxiliary plate is provided with a spring connected with the clamping plate on one side.

[0007] As a preferred scheme of the present application, the auxiliary plate is provided with a reset assembly arranged in the installation frame above the auxiliary plate, and the reset assembly comprises a rotating rod, and a rotating groove is formed in the outer wall of the rotating rod.

[0008] As a preferred scheme of the hardware production quick cooling hardware mold, the outer wall of the rotating rod is sleeved with a limiting sleeve, and the limiting sleeve is in sliding connection with the rotating groove.

[0009] As a preferred scheme of the hardware production quick cooling hardware mold, a conical gear is arranged on the outer wall of the limiting sleeve, and the teeth of the conical gear are in meshing connection with an auxiliary wheel.

[0010] As a preferred scheme of the hardware production quick cooling hardware mold, a rotating disc arranged in the installation frame is arranged on one side of the auxiliary wheel through a one-way bearing, and a connecting rod is arranged on the adjacent side of the rotating disc.

[0011] As a preferred scheme of the hardware production quick cooling hardware mold, a moving plate is movably connected to one end of the rotating disc, and a sliding plate is arranged at one end of the moving plate.

[0012] As a preferred scheme of the hardware production quick cooling hardware mold, a connecting plate is arranged at one end of the sliding plate, and a telescopic push rod movably connected to the moving plate is arranged at the other end of the sliding plate.

[0013] As a preferred scheme of the hardware production quick cooling hardware mold, the supporting assembly further comprises a top plate, a telescopic cylinder is arranged at the top of the top plate, and a push seat is arranged at the output end of the telescopic cylinder.

[0014] As a preferred scheme of the hardware production quick cooling hardware mold, an upper mold is arranged at the bottom of the push seat, and a lower mold is arranged in the groove at the top of the base.

[0015] The beneficial effects of the present application are as follows: through the cooperation between the positioning assembly tension spring, the moving frame and the rotating rod, the roller can center the hardware material, which avoids the influence of the material forming due to the inaccurate placement position of the hardware material, and the reset assembly is used, so that the positioning assembly can move outward when the upper mold is forming the material, so as to achieve the function of not affecting the hardware material processing and the taking of the processed material. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the hardware mold with rapid cooling for hardware production.

[0018] Figure 2 It is a schematic diagram of the internal structure of the hardware mold with rapid cooling for hardware production.

[0019] Figure 3 It is a schematic diagram of the reset assembly structure of the hardware mold with rapid cooling for hardware production.

[0020] Figure 4 It is a schematic diagram of the positioning assembly structure of the hardware mold with rapid cooling for hardware production.

[0021] Figure 5 It is a schematic diagram of the limit sliding sleeve and rotating rod structure of the hardware mold with rapid cooling for hardware production.

[0022] Figure 6 It is a schematic diagram of the upper mold structure of the hardware mold with rapid cooling for hardware production.

[0023] In the figure: 10, support assembly; 101, base; 102, mounting frame; 103, top plate; 104, telescopic cylinder; 105, lower mold; 106, push seat; 107, upper mold; 20, positioning assembly; 201, moving plate; 202, push rod; 203, clamping plate; 204, rotating rod; 205, moving frame; 206, roller; 207, mounting plate; 208, tension spring; 209, auxiliary plate; 210, spring; 30, reset assembly; 301, rotating disc; 302, connecting rod; 303, moving plate; 304, sliding plate; 305, connecting plate; 306, telescopic push rod; 307, rotating rod; 308, rotating groove; 309, limit sliding sleeve; 310, bevel gear; 311, auxiliary wheel. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the drawings.

[0025] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the scope of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0026] Second, the "one embodiment" or "an embodiment" referred to herein can include a particular feature, structure, or characteristic. The various embodiments appearing at different places in this specification can not all refer to the same embodiment or to the same implementations or alternatives of an embodiment.

[0027] Embodiment 1, with reference to Figure 1 , Figure 2 , Figure 3 and Figure 4 , is the first embodiment of the present application, which provides a hardware mold capable of rapid cooling for hardware production, comprising a supporting assembly 10, including a base 101 and a mounting frame 102 arranged on the top of the base 101, the mounting frame 102 is mounted on the top of the base 101 by bolts; a positioning assembly 20, including a moving plate 201 arranged inside the mounting frame 102, the moving plate 201 is slidingly connected to the inside of the mounting frame 102, and the moving plate 201 can slide left and right at the bottom of the mounting frame 102, a push rod 202 arranged on one side of the moving plate 201, the moving plate 201 and the push rod 202 are fixedly connected by bolts, so that when the moving plate 201 moves, the moving plate 201 can drive the push rod 202 to move, a clamping plate 203 arranged at one end of the push rod 202, and when the push rod 202 moves, the push rod 202 can provide power transmission help for the movement of the clamping plate 203, a rotating rod 204 arranged inside the clamping plate 203, when the rotating rod 204 rotates, the rotating rod 204 can rotate inside the clamping plate 203, and the rotating rod 204 is movably installed in the clamping plate 203 by bearings, a movement frame 205 arranged outside the rotating rod 204, when the rotating rod 204 rotates, the rotating rod 204 can rotate inside the clamping plate 203, the movement frame 205 is fixed on the outer wall of the rotating rod 204 by bolts, a roller 206 arranged at the bottom of the movement frame 205, when the rotating rod 204 rotates, the rotating rod 204 can drive the movement frame 205 and the roller 206 to move, a mounting plate 207 arranged on the top of the movement frame 205 and a tension spring 208 arranged on one side of the mounting plate 207, the mounting plate 207 is fixedly installed on the top outer wall of the movement frame 205 by bolts, and the tension spring 208 is fixed at one end of the mounting plate 207; one end of the tension spring 208 is fixed to the side of the mounting plate 207, and the other end of the tension spring 208 is connected to the inside of the clamping plate 203, the tension spring 208 drives the mounting plate 207 and the movement frame 205 through its tension, so as to reset the position of the roller 206.

[0028] Specifically, the positioning assembly 20 further comprises an auxiliary plate 209 which can slide into the interior of the mounting frame 102, the auxiliary plate 209 being fixed at one end of the push rod 202, the push rod 202 and the auxiliary plate 209 being fixedly connected by means of bolts when the push rod 202 is in motion, one side of the auxiliary plate 209 being provided with a spring 210 connected with the clamping plate 203, one end of the spring 210 being connected with the auxiliary plate 209, and the other end of the spring 210 being fixedly connected with the clamping plate 203.

[0029] In use, when the moving plate 201 is horizontally displaced, the end thereof is driven by the fixedly connected push rod 202 to move linearly along a trajectory parallel to the moving plate 201, the end of the push rod 202 away from the moving plate 201 being fixedly connected with the auxiliary plate 209, so that the auxiliary plate 209 is horizontally slid in response to the movement of the push rod 202, the end of the spring 210 welded on the side of the auxiliary plate 209 being synchronously pulled during the movement of the auxiliary plate 209, and the other end of the spring 210 being connected with the clamping plate 203, the pushing force driving the clamping plate 203 to move transversely along the moving direction of the moving plate 201, the rotating rod 204 being mounted by means of bearings on the inside of both sides of the clamping plate 203, the rotating rod 204 moving along the moving direction when the clamping plate 203 is displaced, and further driving the movement frame 205 connected at the other end to change position, the roller 206 being mounted by means of a shaft pin at the bottom of the movement frame 205, the roller 206 being close to the surface of the hardware material to be processed during the movement of the movement frame 205, and the two groups of rollers being symmetrically distributed to form bidirectional limiting to prevent the material from being deviated during subsequent processing, the side surface of the hardware material being closely attached to the arc surface of the roller 206 when the clamping plate 203 continues to advance under the continuous action of the spring 210, at which time the center reference of the material itself forces the roller 206 to rotate adaptively, the rotation being transmitted to the movement frame 205 to make it rotate around the shaft of the rotating rod 204 to adjust, and finally the center positioning of the hardware material is realized, at the same time, the mounting plate 207 fixed at the top of the movement frame 205 swings synchronously with the rotation, the tension spring 208 connected with the hook on one side of the mounting plate 207 being gradually stretched to produce elastic deformation and accumulate restoring force, and the power reserve is provided for the subsequent reset action after positioning is completed, and the whole linkage process forms a complete force transmission closed loop.

[0030] To sum up, during the operation of the device, the positioning assembly 20 can play a core regulating role. When the clamping plates 203 on both sides move close to each other under the action of the driving force, they can not only directly form a preliminary clamping state for the material, but also drive the rotating rod 204 to move synchronously through the connecting structure. The movement of the rotating rod 204 is not an isolated action, but it can transmit the force to the moving frame 205 connected thereto, so as to make the moving frame 205 smoothly slide along the preset track. At this time, the roller 206 installed at the bottom of the moving frame 205 starts to contact the surface of the material. By virtue of the rolling characteristics of the roller 206, the material can be accurately positioned through continuous position adjustment. In this series of actions, the roller 206, the moving frame 205, the mounting plate 207, the tension spring 208 and the rotating rod 204 form a close cooperative work, and finally realize the center positioning. The elastic potential energy of the tension spring 208 helps the device for the next center positioning, so as to realize the reset of the roller 206, the moving frame 205, the mounting plate 207, the tension spring 208 and the rotating rod 204. Through such a positioning process, the material is accurately fixed below the upper die 107, eliminating the processing errors caused by position deviation, ensuring the precision of subsequent stamping, and effectively improving the processing quality and the product qualification rate of the material.

[0031] Embodiment 2, refer to Figure 2 、 Figure 3 and Figure 5 , which is the second embodiment of the present application, and different from the previous embodiment, solves the problem of intermittent driving or resetting of the positioning assembly.

[0032] Specifically, the upper side of the auxiliary plate 209 is provided with a reset assembly 30 installed in the inside of the mounting frame 102. The reset assembly 30 comprises a rotating rod 307, a rotating groove 308 is formed on the outer wall of the rotating rod 307. When the rotating rod 307 moves downward, the rotating rod 307 can drive the rotating groove 308 to move, and the top end of the rotating rod 307 is fixed on the bottom outer wall of the push seat 106, and the rotating groove 308 is formed on the outer wall of the rotating rod 307.

[0033] Further, a limiting sliding sleeve 309 is sleeved on the outer wall of the rotating rod 307, the limiting sliding sleeve 309 is in sliding connection with the rotating groove 308, the limiting sliding sleeve 309 can slide on the outer wall of the rotating rod 307, and the protruding block in the limiting sliding sleeve 309 is in sliding connection with the inside of the rotating groove 308.

[0034] Further, a bevel gear 310 is arranged on the outer wall of the limiting sliding sleeve 309, and an auxiliary wheel 311 is engagedly connected on the teeth of the bevel gear 310. The bevel gear 310 is fixed in the inside of the mounting frame 102 by the mounting plate, and the bevel gear 310 is fixed on the outer wall of the limiting sliding sleeve 309.

[0035] Further, one side of the auxiliary wheel 311 is mounted with a rotating disc 301 arranged inside the mounting frame 102 through a one-way bearing, the adjacent side of the rotating disc 301 is provided with a connecting rod 302, the inside of the auxiliary wheel 311 is provided with a one-way bearing, and the inside of the one-way bearing is fixed on the shaft rod on one side of the rotating disc 301, when the auxiliary wheel 311 rotates in the forward direction, the auxiliary wheel 311 can drive the rotating disc 301 to rotate by using the one-way bearing, and the rotating disc 301 can drive the other rotating disc 301 to move synchronously by using the action of the connecting rod 302.

[0036] Further, one end of the rotating disc 301 is movably connected with a moving plate 303, one end of the moving plate 303 is provided with a sliding plate 304, the rotating disc 301 is movably installed on one side of the moving plate 303 through a rotating shaft, and when the moving plate 303 moves, the moving plate 303 can drive the sliding plate 304 to move by using the movable connection between the moving plate 303 and the sliding plate 304.

[0037] Further, one end of the sliding plate 304 is provided with a connecting plate 305, the other end of the sliding plate 304 is provided with a telescopic push rod 306 movably connected with the moving plate 201, when the sliding plate 304 moves, the sliding plate 304 can drive the connecting plate 305 to move, the connecting plate 305 can drive the telescopic push rod 306 to move, and the telescopic output rod inside the telescopic push rod 306 is connected with the moving plate 201.

[0038] The remaining structures are the same as those in Embodiment 1.

[0039] In use, when the rotating rod 307 moves downward along the axial direction, the spiral rotating groove 308 machined on the outer wall of the rotating rod 307 will also move axially, and since the inner wall protrusions of the limiting sleeve 309 are always embedded in the rotating groove 308, the two form a precise sliding connection structure, so that the axial movement of the rotating groove 308 will drive the limiting sleeve 309 to rotate around the axis of the rotating rod 307 through the guiding action of the spiral track. In the rotating process of the limiting sleeve 309, the bevel gear 310 fixedly connected thereto will also rotate synchronously, and since the teeth of the bevel gear 310 are in a continuous meshing state with the end face teeth of the auxiliary wheel 311, this gear transmission structure will transmit the rotating motion to the auxiliary wheel 311, so that the auxiliary wheel 311 obtains corresponding rotating power. In addition, the auxiliary wheel 311 and the rotating disc 301 are connected through a one-way bearing, and when the auxiliary wheel 311 rotates forward, the one-way bearing will be locked and drive the rotating disc 301 to rotate synchronously; when the auxiliary wheel 311 rotates reversely, the one-way bearing is in a free state, and the auxiliary wheel 311 will be idling, so the rotating disc 301 remains stationary. Moreover, with the rotation of the rotating disc 301, the connecting rod 302 movably connected between the two rotating discs 301 drives the rotating disc 301 on the other side to rotate synchronously, and the synchronous rotation of the two rotating discs 301 drives the motion plate 303 movably connected thereto to move, and the motion plate 303 drives the sliding plate 304 to move. The sliding plate 304 can make periodic oscillation around the movable shaft on the connecting plate 305, and the oscillation of the sliding plate 304 will directly act on the sleeve of the telescopic push rod 306, so that the internal telescopic shaft drives the moving plate 201 to reciprocate. When the telescopic push rod 306 oscillates, the output shaft inside the telescopic push rod 306 can also be telescopic through the movable connection between the moving plate 201, so that the output shaft can be telescopic, and the translation of the moving plate 201 is realized, and the power transmission process of the entire mechanical transmission chain is completed.

[0040] In summary, through the meshing transmission of the rotating rod 307 and the rotating groove 308, the limiting sleeve 309 is driven to rotate synchronously, the limiting sleeve 309 drives the rotating disc 301 to rotate intermittently through the bevel gear 310 and the auxiliary wheel 311, and through the cooperation of the connecting rod 302, the rotating disc 301, the motion plate 303 and the sliding plate 304, the telescopic push rod 306 is driven to produce regular reciprocating motion, so as to realize the accurate intermittent pushing and resetting of the positioning assembly 20. This mode not only guarantees the barrier-free taking and placing operation of the hardware after processing, but also ensures the continuity of the stamping process is not affected.

[0041] Embodiment 3, with reference to Figure 1 、 Figure 2 and Figure 6 , which is the third embodiment of the present application, and differs from the previous embodiment in that it solves the problem of stamping hardware materials.

[0042] Specifically, the support assembly 10 further comprises a top plate 103, the top of the top plate 103 is provided with a telescopic cylinder 104, the output end of the telescopic cylinder 104 is provided with a pusher 106, the telescopic cylinder 104 is fixed on the top outer wall of the top plate 103 by bolts, and the output end of the telescopic cylinder 104 is fixed on the top outer wall of the pusher 106 when the telescopic cylinder 104 is started, and the top end of the rotating rod 307 is fixed on the bottom outer wall of the pusher 106.

[0043] Further, the bottom of the pusher 106 is provided with an upper die 107, and the top of the base 101 is provided with a lower die 105 inserted in the groove of the top outer wall of the base 101, and the upper die 107 is fixed on the bottom outer wall of the pusher 106.

[0044] The remaining structure is the same as that of example 2.

[0045] In use, when the telescopic cylinder 104 is started, the piston rod inside will extend outward along the axial direction, thereby driving the pusher 106 fixedly connected thereto to move linearly, in the movement process of the pusher 106, through the fixation with the top end of the rotating rod 307, the linear driving force will be transmitted to the rotating rod 307 at the same time, prompting the rotating rod 307 to move downward along the axial direction, providing power for the subsequent process, at the same time, the upper die 107 fixedly connected to the bottom of the pusher 106 will move downward with the pusher 106, when it reaches the preset stroke, the upper die 107 will be accurately placed on the lower die 105 on the workbench, and the matching relationship between the two cavity shapes will be used to apply pressure to the material placed in the cavity of the die, under the action of the pressure, the material will be plastically deformed according to the shape of the die, thereby completing the stamping process, after the stamping process is completed, the piston rod of the telescopic cylinder 104 will drive the pusher 106, the rotating rod 307 and the upper die 107 to reset synchronously, preparing for the next processing cycle.

[0046] In summary, when the push seat 106 moves downward under the action of the driving force, on the one hand, the driving force is directly transmitted to the upper die 107 through the bottom bolt connection structure, driving the upper die 107 to descend synchronously, and on the other hand, the linear motion is converted into the axial thrust of the rotating rod 307 through the connection with the rotating rod 307, driving the rotating rod 307 to move downward along its own axis, providing stable power for the subsequent linkage mechanism. When the push seat 106 is reset upward, it will also drive the upper die 107 to rise synchronously through the above-mentioned connection structure, and pull the rotating rod 307 to return to the initial position. During the stamping operation stage, the upper die 107 descending with the push seat 106 will be precisely docked with the lower die 105 fixed on the workbench, and a uniform and powerful pressure will be exerted on the hardware material placed in the cavity by using the precise fit of the cavities of the two dies. Under the action of this pressure, the hardware material will complete plastic deformation according to the shape set by the die, thereby efficiently completing the bending and forming stamping processes, and ensuring that the size accuracy and structural strength of the processed hardware meet the preset standards.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A metal mold capable of rapid cooling for metal production, characterized by: include, A support assembly (10) comprising a base (101), a mounting frame (102) disposed on top of the base (101); and, A positioning assembly (20) includes a movable plate (201) disposed inside the mounting frame (102), a push rod (202) disposed on one side of the movable plate (201), a clamping plate (203) disposed at one end of the push rod (202), a rotating rod (204) disposed inside the clamping plate (203), a motion frame (205) disposed outside the rotating rod (204), a roller (206) disposed at the bottom of the motion frame (205), a mounting plate (207) disposed on the top of the motion frame (205), and a tension spring (208) disposed on one side of the mounting plate (207); wherein, One end of the tension spring (208) is fixed to the side of the mounting plate (207), and the other end of the tension spring (208) is connected to the inside of the clamping plate (203). The tension spring (208) drives the mounting plate (207) and the moving frame (205) through its tension, thereby resetting the position of the roller (206).

2. A metal mold capable of rapid cooling for metal production according to claim 1, characterized in that: The positioning assembly (20) further comprises an auxiliary plate (209), wherein the auxiliary plate (209) is fixed to one end of the push rod (202), and a spring (210) connected to the clamping plate (203) is provided on one side of the auxiliary plate (209).

3. A metal mold capable of rapid cooling for metal production according to claim 2, characterized in that: A reset assembly (30) installed inside the mounting frame (102) is provided directly above the auxiliary plate (209). The reset assembly (30) includes a rotating rod (307). A rotating groove (308) is provided on the outer wall of the rotating rod (307).

4. A metal mold capable of rapid cooling for metal production as claimed in claim 3, characterized in that: A limiting sliding sleeve (309) is sleeved on the outer wall of the rotating rod (307), and the limiting sliding sleeve (309) is slidably connected to the rotating groove (308).

5. A metal mold capable of rapid cooling for metal production as claimed in claim 4, characterized in that: A bevel gear (310) is provided on the outer wall of the limiting sliding sleeve (309), and an auxiliary wheel (311) is meshedly connected to the teeth of the bevel gear (310).

6. A metal mold capable of rapid cooling for metal production according to claim 5, characterized in that: A turntable (301) disposed inside the mounting frame (102) is mounted on one side of the auxiliary wheel (311) via a one-way bearing, and a connecting rod (302) is disposed on an adjacent side of the turntable (301).

7. A metal mold capable of rapid cooling for metal production according to claim 6, characterized in that: One end of the rotating disk (301) is movably connected to a moving plate (303), and one end of the moving plate (303) is provided with a sliding plate (304).

8. A metal mold capable of rapid cooling for metal production as claimed in claim 7, characterized in that: One end of the slide plate (304) is provided with a connecting plate (305), and the other end of the slide plate (304) is provided with a telescopic push rod (306) movably connected to the moving plate (201).

9. The metal mold capable of rapid cooling for metal production according to claim 1, characterized in that: The support assembly (10) further comprises a top plate (103), a telescopic cylinder (104) is provided on the top of the top plate (103), and a push seat (106) is provided at the output end of the telescopic cylinder (104).

10. A metal mold capable of rapid cooling for metal production according to claim 9, characterized in that: An upper mold (107) is provided at the bottom of the push seat (106), and a lower mold (105) is provided in the top groove of the base (101).

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