A protective device for rapid injection molding equipment

Abstract

The present invention discloses a protective device for rapid injection molding equipment, which relates to the field of injection molding technology. The device comprises a machine body and a glue injection device, wherein a feeding device is fixedly installed on the top of the machine body, a water tank is fixedly installed on the top of the machine body, a glue injection machine is fixedly installed on the inner wall of the machine body, an electric push rod is fixedly installed on the inner wall of the machine body, and a mold groove is fixedly installed on the output end of the electric push rod; wherein the glue injection device comprises a mold plate, a heating bin, a glue injection port, a reciprocating screw, a rotating plate, an L-shaped sliding rod, a slider and a sealing block, wherein the raw material is driven into the heating bin by the rotation of the glue injection machine, and the raw material is pushed into the mold groove while the glue injection machine rotates, and the rotation of the glue injection machine drives the reciprocating screw to rotate, the heating bin is fixedly installed on the fixed end of the glue injection machine, and the glue injection port is fixedly installed on the surface of the heating bin, and the rotation of the rotating plate can prevent the glue injection port from solidifying inside, causing the glue injection port to be blocked, thereby affecting the glue injection efficiency.

Description

[0001] This application is a divisional application with application number 2024102671790, application date March 8, 2024, and invention name “A rapid injection molding device for injection molding products”. Technical Field

[0002] The invention relates to the technical field of injection molding, in particular to a protective device for rapid injection molding equipment. Background Art

[0003] Injection molding products rapid injection molding equipment is a high-efficiency, high-precision injection molding machine used for plastic injection molding. These devices have the characteristics of fast production cycle, high automation, precise control, etc., and can produce plastic products on a large scale in a short time.

[0004] Patent announcement number CN218701040U relates to an injection molding device for injection molded products, comprising a molding device body, a pressure plate, a fixed plate, and a first working groove, wherein the pressure plate is movably connected to one side of the molding device body, the fixed plate is fixed to the bottom surface of the molding device body and the pressure plate, the first working groove is formed on the surface of the molding device body and is located on one side of the pressure plate, and a blower is fixedly connected to the side of the molding device body away from the pressure plate. By providing a blower, when the material in the first working groove solidifies and needs to be cooled and demolded, the blower can be started to drive air into the guide rod. At this time, the guide rod can drive air into the connecting plate, and then the outlet hole can disperse and guide the air so that the air can be evenly distributed in the cavity to cool the model product, thereby improving the efficiency of heat dissipation molding and preventing poor efficiency during natural cooling, which leads to poor user experience.

[0005] In the above patent, the blower is started to drive air into the guide rod. At this time, the guide rod can allow air to enter the connecting plate, and then the outlet hole can disperse and discharge the air so that the air can be evenly distributed in the cavity to cool the model product, thereby improving the efficiency of heat dissipation molding and preventing poor efficiency during natural cooling, resulting in poor usability. However, during the glue injection process, the glue injection port may solidify if it is not used for a long time, which will cause the glue injection port to be blocked and affect the glue injection efficiency. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a protective device for rapid injection molding equipment, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a protective device for rapid injection molding equipment, including a body and a glue injection device, a feeding device is fixedly installed on the top of the body, a water tank is fixedly installed on the top of the body, a glue injection machine is fixedly installed on the inner wall of the body, an electric push rod is fixedly installed on the inner wall of the body, and a mold groove is fixedly installed on the output end of the electric push rod; wherein, the glue injection device includes a mold plate, a heating chamber, a glue injection port, a reciprocating screw, a rotating plate, an L-shaped slide bar, a slider and a sealing block, the raw material is driven into the heating chamber by the rotation of the glue injection machine, the raw material is pushed into the mold groove when the glue injection machine rotates, and the rotation of the glue injection machine drives the reciprocating screw to rotate The heating chamber is fixedly mounted on the fixed end of the glue injection machine, the glue injection port is fixedly mounted on the surface of the heating chamber, the mold plate is fixedly mounted on the surface of the glue injection port, the reciprocating screw is fixedly mounted on the output end of the glue injection machine, the rotating plate is fixedly mounted on the surface of the reciprocating screw, the L-shaped slide bar is fixedly mounted on the top of the inner wall of the heating chamber, the slider is threadedly mounted on the surface of the reciprocating screw, and the sealing block is fixedly mounted on the surface of the slider; wherein, the electric push rod is provided with a demoulding device for demoulding the product, the rotation of the reciprocating screw will drive the slider to reciprocate, the reciprocating motion of the slider will drive the sealing block to reciprocate, and when the sealing block moves to the glue injection port, the glue injection machine stops rotating, and the glue injection port is blocked by the sealing block.

[0008] According to the above technical solution, the slider slides on the surface of the L-shaped slide rod, and a thread groove is provided at the output end of the glue injection machine.

[0009] According to the above technical solution, the demolding device includes an elastic telescopic rod, an L-shaped rod and a fixed block. The electric push rod will drive the mold groove to shrink, and the shrinkage of the mold groove will drive the free end of the elastic telescopic rod to shrink. The shrinkage of the free end of the elastic telescopic rod will drive the fixed block to move toward the direction close to the machine body. The elastic telescopic rod is fixedly installed at the fixed end of the electric push rod, the L-shaped rod is fixedly installed at the fixed end of the electric push rod, and the fixed block is fixedly installed at the free end of the elastic telescopic rod.

[0010] According to the above technical solution, a fixed rod is fixedly installed on the surface of the L-shaped rod, a rotating plate is rotatably installed on the bottom of the fixed rod, a triangular plate is rotatably installed on the top of the rotating plate, a limiting block is fixedly installed on the top of the rotating plate, a No. 1 torsion spring is arranged between the fixed rod and the rotating plate, and a No. 2 torsion spring is arranged between the rotating plate and the triangular plate. When the fixed block moves toward the direction close to the machine body, it will contact the triangular plate, and the fixed block will push the triangular plate to move away from the mold groove. The movement of the triangular plate away from the mold groove will drive the rotating plate to rotate.

[0011] According to the above technical solution, it also includes a protective device and a cooling device, the protective device includes a connecting rod, a trapezoidal block, a sliding plate, an elastic telescopic connecting rod and a material receiving plate, the fixed block moves in the direction close to the body, and the connecting rod moves in the direction close to the body, which drives the trapezoidal block to move in the direction close to the body, a groove is provided on the surface of the body, the connecting rod is fixedly installed on the top of the fixed block, the trapezoidal block is fixedly installed on the surface of the connecting rod, the sliding plate is slidably installed on the inner wall of the groove, the elastic telescopic connecting rod is fixedly installed on the bottom of the sliding plate, the material receiving plate is rotatably installed on the bottom of the inner wall of the body, the trapezoidal block and the sliding plate are in contact with the surface, and a No. 3 torsion spring is provided between the material receiving plate and the body.

[0012] According to the above technical solution, a long rod is fixedly installed on the surface of the connecting rod, and a push plate is fixedly installed on the surface of the long rod. When the connecting rod moves toward the middle of the body, it will drive the long rod to move toward the middle of the body, and when the long rod moves toward the middle of the body, it will drive the push plate to move toward the middle of the body.

[0013] According to the above technical solution, the cooling device includes a water circulation device, a cooling pipe, a sliding collar, a filter, a rotating shaft, an elastic telescopic plate and a short rod. The water circulation device allows water to enter the cooling pipe, and the water flowing in the cooling pipe cools down the product being processed, which can achieve product processing effect. At the same time, when water enters the water circulation device, the filter will filter the water inlet. The water circulation device is fixedly installed on the bottom of the inner wall of the water tank, the cooling pipe is fixedly installed on the bottom of the water circulation device, the sliding collar is slidably installed on the surface of the water circulation device, the filter is slidably installed on the surface of the water circulation device, the rotating shaft is rotatably installed on the top of the water circulation device, the elastic telescopic plate is fixedly installed on the surface of the rotating shaft, and the short rod is fixedly installed on the top of the water circulation device. The rotating shaft is manually rotated, and the rotation of the rotating shaft will drive the elastic telescopic plate to rotate. The rotation of the elastic telescopic plate will contact the short rod, and the free end of the elastic telescopic plate will shrink inward.

[0014] According to the above technical solution, a water inlet is provided on the surface of the water circulation device, a No. 1 spring is provided between the sliding collar and the water circulation device, and a No. 2 spring is provided between the filter screen and the water circulation device. The sliding collar is reset by the No. 1 spring, and the filter screen is reset by the No. 2 spring.

[0015] The present invention provides a protective device for rapid injection molding equipment. It has the following beneficial effects:

[0016] (1) This invention drives the reciprocating screw to rotate while the glue injection machine rotates. The rotation of the reciprocating screw drives the rotating plate to rotate. The rotating plate can prevent the glue injection port from solidifying inside, causing the glue injection port to be blocked and affecting the glue injection efficiency. At the same time, when the reciprocating screw rotates, it drives the slider to reciprocate. When the slider reciprocates to the glue injection port, the glue injection machine stops rotating and uses a sealing block to block the glue injection port to prevent the raw material from flowing back and affecting the mold forming.

[0017] (2) This invention drives the elastic telescopic rod to retract by contracting the electric push rod. During the movement, the fixed block contacts the L-shaped rod, causing the free end of the elastic telescopic rod to stop contracting. The processed product is ejected through the free end, thereby improving the demoulding efficiency. At the same time, during the contraction of the elastic telescopic rod, the triangular block is pushed to drive the rotating plate to rotate. When the rotating plate is reset, it will knock on the mold groove to prevent the product from fitting too tightly to the mold groove, thereby affecting the demoulding efficiency.

[0018] (3) This invention drives the connecting rod to move away from the injection machine when the fixed block contracts, so that the receiving plate rotates upward, preventing the height from being too high during demoulding, which causes the product to fall and be damaged when demoulding. At the same time, when the electric push drives the fixed block to reset, the connecting rod will drive the trapezoidal block to push the receiving plate to rotate downward, so that the product slides out automatically, thereby improving production efficiency. At the same time, the push plate will be driven to move during the movement, which can prevent the product from sticking to the edge and affecting production efficiency.

[0019] (4) This invention uses a water circulation device to drive water into the cooling pipe, and cools the product by flowing inside the cooling pipe. At the same time, when the filter needs to be replaced, the rotating shaft is manually rotated to drive the elastic telescopic plate to rotate. When the elastic telescopic plate contacts the short rod, the limit on the filter will be released, and the filter can be replaced. At the same time, the sliding ring will move upward to block the water inlet, preventing impurities from entering the cooling pipe and adhering to the inner wall of the cooling pipe, resulting in a decrease in the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the glue injection machine of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of part A in the middle;

[0023] Figure 4 Schematic diagram of the demoulding device structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the machine body of the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure of part B;

[0026] Figure 7 Schematic diagram of the internal cross-sectional structure of the water tank of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of part C in the middle.

[0028] In the figure: 1. machine body; 2. feeding device; 3. water tank; 4. glue injection machine; 5. electric push rod; 6. mold groove; 7. mold plate; 8. heating chamber; 9. glue injection port; 10. reciprocating screw; 11. rotating plate; 12. L-shaped sliding rod; 13. slider; 14. sealing block; 151. elastic telescopic rod; 152. L-shaped rod; 153. fixed block; 154. fixed rod; 155. rotating plate; 156. triangular plate; 157. limit block; 161. connecting rod; 162. trapezoidal block; 163. sliding plate; 164. elastic telescopic connecting rod; 165. receiving plate; 166. long rod; 167. push plate; 171. water circulation device; 172. cooling pipe; 173. sliding collar; 174. filter screen; 175. rotating shaft; 176. elastic telescopic plate; 177. short rod. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-4One embodiment of the present invention is: a protective device for rapid injection molding equipment, including a body 1, and also including a glue injection device, a feeding device 2 is fixedly installed on the top of the body 1, a water tank 3 is fixedly installed on the top of the body 1, a glue injection machine 4 is fixedly installed on the inner wall of the body 1, an electric push rod 5 is fixedly installed on the inner wall of the body 1, and a mold groove 6 is fixedly installed on the output end of the electric push rod 5; wherein, the glue injection device includes a mold plate 7, a heating chamber 8, a glue injection port 9, a reciprocating screw 10, a rotating plate 11, an L-shaped slide bar 12, a slider 13 and a sealing block 14, and the rotation of the rotating plate 11 can prevent the glue injection port 9 from solidifying inside, resulting in the glue being stuck. The glue port 9 is blocked, which affects the glue injection efficiency. The heating chamber 8 is fixedly mounted on the fixed end of the glue injection machine 4, the glue injection port 9 is fixedly mounted on the surface of the heating chamber 8, the mold plate 7 is fixedly mounted on the surface of the glue injection port 9, the reciprocating screw 10 is fixedly mounted on the output end of the glue injection machine 4, the rotating plate 11 is fixedly mounted on the surface of the reciprocating screw 10, the L-shaped slide bar 12 is fixedly mounted on the top of the inner wall of the heating chamber 8, the slider 13 is threadedly mounted on the surface of the reciprocating screw 10, and the sealing block 14 is fixedly mounted on the surface of the slider 13; among them, the electric push rod 5 is provided with a demoulding device for demoulding the product to prevent the raw materials from flowing back into the heating chamber 8 and affecting product processing.

[0031] The slider 13 slides on the surface of the L-shaped slide rod 12, and a thread groove is provided at the output end of the glue injection machine 4.

[0032] The demolding device includes an elastic telescopic rod 151, an L-shaped rod 152 and a fixed block 153. The elastic telescopic rod 151 is fixedly installed on the fixed end of the electric push rod 5, the L-shaped rod 152 is fixedly installed on the fixed end of the electric push rod 5, and the fixed block 153 is fixedly installed on the free end of the elastic telescopic rod 151 to prevent the processed product from being stuck in the mold groove 6 and affecting subsequent processing.

[0033] A fixed rod 154 is fixedly installed on the surface of the L-shaped rod 152, and a rotating plate 155 is rotatably installed at the bottom of the fixed rod 154, and a triangular plate 156 is rotatably installed on the top of the rotating plate 155. A limiting block 157 is fixedly installed on the top of the rotating plate 155. A No. 1 torsion spring is arranged between the fixed rod 154 and the rotating plate 155, and a No. 2 torsion spring is arranged between the rotating plate 155 and the triangular plate 156 to prevent the product from fitting too tightly to the mold groove 6 and affecting the demoulding effect. The rotating plate 155 is reset by the No. 1 torsion spring, and the triangular plate 156 is reset by the No. 2 torsion spring.

[0034] When this embodiment is working, the raw materials are driven into the heating chamber 8 by the rotation of the glue injection machine 4. The glue injection machine 4 will push the raw materials into the mold groove 6 while rotating. The rotation of the glue injection machine 4 will drive the reciprocating screw 10 to rotate. The rotation of the reciprocating screw 10 will drive the rotating plate 11 to rotate. The rotation of the rotating plate 11 can prevent the internal solidification of the glue injection port 9, which will cause the glue injection port 9 to be blocked and affect the glue injection efficiency. At the same time, the rotation of the reciprocating screw 10 will drive the slider 13 to reciprocate. The reciprocating motion of the slider 13 will drive the sealing block 14 to reciprocate. When the sealing block 14 moves to the glue injection port 9, the glue injection machine 4 will stop rotating and use the sealing block 14 to block the glue injection port 9 to prevent the raw materials from flowing back into the heating chamber 8 and affecting product processing.

[0035] When the processing is completed, the electric push rod 5 will drive the mold groove 6 to shrink, and the shrinkage of the mold groove 6 will drive the free end of the elastic telescopic rod 151 to shrink. The shrinkage of the free end of the elastic telescopic rod 151 will drive the fixed block 153 to move in the direction close to the machine body 1. The fixed block 153 moves in the direction close to the machine body 1 and contacts the L-shaped rod 152. The L-shaped rod 152 will clamp the fixed block 153. At the same time, the mold groove 6 continues to shrink, and the free end of the elastic telescopic rod 151 will push the processed product out of the mold groove 6 to prevent the processed product from being stuck in the mold groove 6. It affects the subsequent processing. At the same time, when the fixed block 153 moves toward the body 1, it will contact the triangular plate 156. The fixed block 153 will push the triangular plate 156 to move away from the mold groove 6. The movement of the triangular plate 156 away from the mold groove 6 will drive the rotating plate 155 to rotate. When the fixed block 153 is disengaged from the triangular plate 156, the No. 1 spring will drive the rotating plate 155 to reset, and the mold groove 6 will be knocked by the rotating plate 155 to prevent the product from fitting too tightly to the mold groove 6, affecting the demolding effect.

[0036] See also Figure 1-8 On the basis of the above embodiment, another embodiment of the present invention further includes a protective device and a cooling device. The protective device includes a connecting rod 161, a trapezoidal block 162, a sliding plate 163, an elastic telescopic connecting rod 164 and a receiving plate 165. A groove is opened on the surface of the body 1, the connecting rod 161 is fixedly mounted on the top of the fixed block 153, the trapezoidal block 162 is fixedly mounted on the surface of the connecting rod 161, the sliding plate 163 is slidably mounted on the inner wall of the groove, the elastic telescopic connecting rod 164 is fixedly mounted on the bottom of the sliding plate 163, and the receiving plate 165 is rotatably mounted on the bottom of the inner wall of the body 1. The trapezoidal block 162 and the sliding plate 163 are in contact with each other. A No. 3 torsion spring is arranged between the receiving plate 165 and the body 1 to prevent the height from being too high during demolding, which may cause damage to the product when it falls off during demolding.

[0037] A long rod 166 is fixedly mounted on the surface of the connecting rod 161, and a push plate 167 is fixedly mounted on the surface of the long rod 166. The push plate 167 can push the product carried on the edge of the receiving plate 165 toward the middle to prevent affecting production efficiency.

[0038] The cooling device includes a water circulation device 171, a cooling pipe 172, a sliding collar 173, a filter 174, a rotating shaft 175, an elastic telescopic plate 176 and a short rod 177 to prevent impurities from entering the cooling pipe 172 and affecting the cooling effect of the cooling pipe 172. The water circulation device 171 is fixedly installed at the bottom of the inner wall of the water tank 3, the cooling pipe 172 is fixedly installed at the bottom of the water circulation device 171, the sliding collar 173 is slidably installed on the surface of the water circulation device 171, the filter 174 is slidably installed on the surface of the water circulation device 171, the rotating shaft 175 is rotatably installed on the top of the water circulation device 171, the elastic telescopic plate 176 is fixedly installed on the surface of the rotating shaft 175, and the short rod 177 is fixedly installed on the top of the water circulation device 171 to realize quick replacement of the filter 174.

[0039] A water inlet is provided on the surface of the water circulation device 171. A No. 1 spring is provided between the sliding ring 173 and the water circulation device 171, and a No. 2 spring is provided between the filter screen 174 and the water circulation device 171. The sliding ring 173 is reset by the No. 1 spring, and the filter screen 174 is reset by the No. 2 spring.

[0040] When the present embodiment is working, when the fixed block 153 moves toward the direction close to the machine body 1, the connecting rod 161 moves toward the direction close to the machine body 1, and the connecting rod 161 moves toward the direction close to the machine body 1, which drives the trapezoidal block 162 to move toward the direction close to the machine body 1. The trapezoidal block 162 moves toward the direction close to the machine body 1 and breaks away from the contact with the sliding plate 163, so that the sliding plate 163 moves upward under the elastic force of the elastic telescopic connecting rod 164 itself. The upward movement of the sliding plate 163 pushes the receiving plate 165 to rotate upward, and the receiving plate 165 rotates upward to prevent the height from being too high during demoulding, resulting in damage to the product when it falls off the demoulding. At the same time, when the electric push rod 5 drives the fixed block 153 to reset The connecting rod 161 will drive the trapezoidal block 162 to move toward the middle of the machine body 1. The movement of the trapezoidal block 162 toward the middle of the machine body 1 will push the sliding plate 163 downward. The downward movement of the sliding plate 163 will cause the receiving plate 165 to rotate downward. The downward rotation of the receiving plate 165 allows the product to slide out through the slope, thereby improving production efficiency. At the same time, when the connecting rod 161 moves toward the middle of the machine body 1, it will drive the long rod 166 to move toward the middle of the machine body 1. The movement of the long rod 166 toward the middle of the machine body 1 will drive the push plate 167 to move toward the middle of the machine body 1. The product carrying the edge of the receiving plate 165 can be pushed toward the middle through the push plate 167 to prevent affecting production efficiency.

[0041] When the filter 174 is ejected, the sliding collar 173 moves upward to close the water inlet, preventing water from continuously entering the water circulation device 171 when the filter 174 is replaced, and impurities are attached to the inside of the cooling pipe 172, resulting in a decrease in the cooling effect.

[0042] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for rapid injection molding equipment, comprising a body (1), a feeding device (2) fixedly mounted on the top of the body (1), a water tank (3) fixedly mounted on the top of the body (1), a glue injection machine (4) fixedly mounted on the inner wall of the body (1), an electric push rod (5) fixedly mounted on the inner wall of the body (1), and a mold groove (6) fixedly mounted on the output end of the electric push rod (5); a demoulding device for demoulding a product is provided on the electric push rod (5), and the demoulding device comprises an elastic telescopic rod (151), an L-shaped rod (152) and a fixed block (153); characterized in that: It also includes a connecting rod (161), a trapezoidal block (162), a sliding plate (163), an elastic telescopic connecting rod (164) and a material receiving plate (165), wherein a groove is provided on the surface of the body (1), the connecting rod (161) is fixedly mounted on the top of the fixed block (153), the trapezoidal block (162) is fixedly mounted on the surface of the connecting rod (161), the sliding plate (163) is slidably mounted on the inner wall of the groove, the elastic telescopic connecting rod (164) is fixedly mounted on the bottom of the sliding plate (163), the material receiving plate (165) is rotatably mounted on the bottom of the inner wall of the body (1), the trapezoidal block (162) and the sliding plate (163) are in surface contact, and a No. 3 torsion spring is provided between the material receiving plate (165) and the body (1); The elastic telescopic rod (151) is fixedly mounted on the fixed end of the electric push rod (5), the L-shaped rod (152) is fixedly mounted on the fixed end of the electric push rod (5), and the fixing block (153) is fixedly mounted on the free end of the elastic telescopic rod (151); When the processing is completed, the electric push rod (5) drives the mold groove (6) to shrink, and the shrinkage of the mold groove (6) drives the free end of the elastic telescopic rod (151) to shrink, and the shrinkage of the free end of the elastic telescopic rod (151) drives the fixed block (153) to move in the direction close to the machine body (1), and the fixed block (153) moves in the direction close to the machine body (1) and contacts the L-shaped rod (152), and the L-shaped rod (152) clamps the fixed block (153), and at the same time, the mold groove (6) continues to shrink, and the free end of the elastic telescopic rod (151) pushes the processed product out of the mold groove (6); When the fixed block (153) moves toward the direction close to the machine body (1), the connecting rod (161) moves toward the direction close to the machine body (1), and the connecting rod (161) moves toward the direction close to the machine body (1), driving the trapezoidal block (162) to move toward the direction close to the machine body (1). The trapezoidal block (162) moves toward the direction close to the machine body (1) and is separated from the contact with the sliding plate (163), so that the sliding plate (163) moves upward under the elastic force of the elastic telescopic connecting rod (164). The upward movement of the sliding plate (163) pushes the material receiving plate (165) to rotate upward.

2. The protective device for rapid injection molding equipment according to claim 1, characterized in that: A long rod (166) is fixedly mounted on the surface of the connecting rod (161), and a push plate (167) is fixedly mounted on the surface of the long rod (166).

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