Testing tool for tennis machine injection molding part production

Abstract

The utility model relates to a testing tool for tennis machine injection molding part production, which comprises a base station and a testing device arranged on the base station, the testing device comprises two ball extruding wheels and a plurality of fixing rods, the two ball extruding wheels are arranged up and down and are both rotatably arranged above the base station, and the fixing rods are arranged on the base station. A plurality of fixing rods are fixedly installed on the outer wall of one end of the base table, a guide pipe is fixedly installed above the table top of the base table, and the guide pipe is installed on the side, away from the fixing rods, of the ball squeezing wheel. The outer wall of the fixing rod is frosted, and the end of the fixing rod is in threaded connection with the outer wall of the end of the base. Two supporting blocks are fixedly installed above the end, where the fixing rod is installed, of the base table, the supporting blocks are kept perpendicular to the table top of the base table, a ball squeezing wheel is used for simulating the working condition that a tennis ball flies out of a ball outlet, whether the trafficability of the ball outlet is normal or not is directly observed, and an operator can judge whether a shell injection molding part meets the standard or not according to the passing condition of the tennis ball.

Description

Technical Field

[0001] The utility model relates to the technical field of tennis machine production, in particular to a testing tool for producing injection-molded parts of tennis machines. Background Art

[0002] Most of the parts in a tennis machine are injection molded parts. Among them, the injection molded part of the tennis machine's ball outlet housing is a critical part that directly affects the quality of the ball output of the tennis machine. Therefore, the ball outlet housing needs to be tested. Existing injection molded part housing testing mainly tests the housing's strength and shape. However, for a functional part like the ball outlet housing, the ball outlet passability test is very important. If the ball outlet cannot pass the tennis ball smoothly, it will directly affect the normal operation of the tennis machine. Utility Model Content

[0003] The purpose of this application is to provide a test tool for the production of tennis machine injection molded parts to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] A test fixture for producing injection-molded parts for tennis machines comprises a base and a test device mounted on the base. The test device comprises two ball-extruding wheels and multiple fixed rods. The two ball-extruding wheels are arranged one above the other and are both rotatably mounted above the base. Multiple fixed rods are fixedly mounted on the outer wall of one end of the base. A guide tube is fixedly mounted above the tabletop of the base, and the guide tube is mounted on the side of the ball-extruding wheels away from the fixed rods. The outer wall of the fixed rod is frosted, and the end of the fixed rod is connected to the outer wall of the end of the base by a thread. Two support blocks are fixedly mounted above the end of the fixed rod mounted on the base, and the support blocks remain perpendicular to the tabletop of the base.

[0006] Preferably, the guide tube is in the form of an L-shaped bend, with a gap between the two ball-extruding wheels. The bottom outlet of the guide tube is aligned with the gap between the two ball-extruding wheels, and the linear distance between the outer walls of the two ball-extruding wheels is less than the diameter of the guide tube. A circle of arcuate grooves is defined on the outer wall of each ball-extruding wheel. A guide ring is provided on the outer side of each ball-extruding wheel away from the guide tube. The outer wall of the guide ring is fixedly mounted on the base, and the installation direction of the guide ring opening corresponds to the bottom outlet of the guide tube.

[0007] Preferably, both side outer walls of the ball squeezing wheel are equipped with fixed plates through bearings, a motor is fixedly installed on the outer wall of one of the fixed plates, the fixed plate is fixedly installed on the table top of the base, the fixed plate is arranged perpendicular to the table top of the base, the two ball squeezing wheels are respectively installed on the upper and lower ends of the fixed plate, and the ball squeezing wheels are driven by a motor.

[0008] The beneficial effects of the present invention are as follows: by providing a testing device and using a ball squeezing wheel to simulate the working condition of a tennis ball flying out of the ball outlet, it is possible to directly observe whether the passability of the ball outlet is normal, and the operator can judge whether the shell injection molded part is compliant based on the passing condition of the tennis ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the overall structure of the utility model (from another perspective);

[0011] Figure 3 This is a schematic diagram of the installation structure of the base platform and the ball outlet shell of the tennis machine in the present utility model.

[0012] In the figure: 1. base; 2. guide tube; 3. fixing rod; 4. support block; 5. fixing plate; 6. guide ring; 7. motor; 8. ball squeezing wheel. DETAILED DESCRIPTION

[0013] The following detailed description of preferred embodiments of the present invention, combined with the accompanying drawings, will facilitate understanding of the advantages and features of the present invention by those skilled in the art, thereby more clearly defining the scope of protection of the present invention. Directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are intended solely to refer to the directions in the accompanying drawings. Therefore, these directional terms are intended to illustrate and facilitate understanding of the present invention and are not intended to limit the present invention.

[0014] like Figure 1-3 The test fixture shown is for producing injection-molded parts for tennis machines, comprising a base 1 and a test device mounted on the base 1. The test device comprises two ball-extruding wheels 8 and a plurality of fixed rods 3. The two ball-extruding wheels 8 are arranged one above the other and are both rotatably mounted above the base 1. A plurality of fixed rods 3 are fixedly mounted on the outer wall of one end of the base 1. A guide tube 2 is fixedly mounted above the tabletop of the base 1, and the guide tube 2 is mounted on the side of the ball-extruding wheel 8 away from the fixed rod 3. The outer wall of the fixed rod 3 is frosted, and the end of the fixed rod 3 is connected to the outer wall of the end of the base 1 by a thread. Two support blocks 4 are fixedly mounted above the end of the base 1 where the fixed rod 3 is mounted, and the support blocks 4 remain perpendicular to the tabletop of the base 1.

[0015] The guide tube 2 is an L-shaped bend, with a gap between the two ball-extruding wheels 8. The bottom outlet of the guide tube 2 is aligned with the gap between the two ball-extruding wheels 8, and the linear distance between the outer walls of the two ball-extruding wheels 8 is less than the diameter of the guide tube 2. The outer walls of the ball-extruding wheels 8 are provided with a circle of arc-shaped grooves. A guide ring 6 is provided on the side of the ball-extruding wheels 8 facing away from the guide tube 2. The outer wall of the guide ring 6 is fixedly mounted on the base 1, with the installation direction of the guide ring 6's opening corresponding to the bottom outlet of the guide tube 2.

[0016] The outer walls of both sides of the ball squeezing wheel 8 are equipped with fixed plates 5 through bearings, and a motor 7 is fixedly installed on the outer wall of one of the fixed plates 5. The fixed plate 5 is fixedly installed on the table top of the base 1. The fixed plate 5 is arranged perpendicular to the table top of the base 1. The two ball squeezing wheels 8 are respectively installed at the upper and lower ends of the fixed plate 5, and the ball squeezing wheels 8 are driven by the motor 7.

[0017] Embodiment: Place the injection-molded plastic parts at the end of the base 1. A plurality of mounting holes are provided at the bottom of the ball outlet shell of the tennis machine. Under normal circumstances, the number and position of the mounting holes correspond to the fixing rod 3. The ball outlet of the ball outlet shell corresponds to the opening of the guide ring 6. The ball outlet shell is sleeved onto the fixing rod 3 through the bottom mounting hole. The frosted layer on the outer wall of the fixing rod 3 can play the role of polishing the inner wall of the mounting hole. The support block 4 is engaged in the upper space of the ball outlet shell to play the role of fixing and supporting. In this way, the ball outlet shell is initially fixed. Then the operator starts the two motors 7 on the outer wall of the fixing plate 5. The two motors 7 respectively drive their corresponding ball squeezing wheels 8 to rotate. The two ball squeezing wheels 8 rotate in opposite directions. The operator puts the experimental tennis ball into the top of the guide tube 2 so that the tennis ball is inside the guide tube 2. After sliding for a distance, the tennis ball flies out from the bottom outlet of the guide tube 2 due to inertia, and reaches the area between the two squeezing wheels 8. Both squeezing wheels 8 are made of plastic. The surface friction plus the driving force of the two squeezing wheels 8 clamp the tennis ball between the two squeezing wheels 8. The space between the two squeezing wheels 8 is smaller than the initial volume of the tennis ball, so the tennis ball will be squeezed. At the same time, the two squeezing wheels 8 transmit the tennis ball toward the guide ring 6. The originally squeezed tennis ball is released and flies out instantly. After passing through the guide rings 6, it reaches the ball outlet of the ball outlet shell. If the size and position of the ball outlet are correct, the tennis ball can fly out normally. If there is a problem with the size and position of the ball outlet during injection molding, the tennis ball cannot fly out normally. The operator can judge whether the shell injection molding part is compliant based on the passage of the tennis ball.

[0018] It should be noted that the parts not covered in the present invention are the same as the existing technology or can be implemented by using the existing technology; the various drives in the present invention can be implemented by using corresponding power structures such as cylinders, oil cylinders, electric cylinders, motors, etc. in combination with connecting rods, guide rods, etc., and are not limited to the description in the specification and the structure in the drawings.

[0019] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A test fixture for producing injection molded parts for tennis machines, comprising a base (1) and a test device mounted on the base (1), characterized in that: The testing device comprises two ball-extruding wheels (8) and a plurality of fixed rods (3). The two ball-extruding wheels (8) are arranged up and down and are both rotatably mounted above a base (1). A plurality of fixed rods (3) are fixedly mounted on the outer wall of one end of the base (1). A guide tube (2) is fixedly mounted above the table top of the base (1). The guide tube (2) is mounted on a side of the ball-extruding wheel (8) away from the fixed rods (3). The guide tube (2) is in the shape of an L-shaped curved tube. There is a gap between the two ball-extruding wheels (8). The bottom outlet end of the guide tube (2) is aligned with the gap between the two ball-extruding wheels (8). The straight-line distance between the outer walls of the two ball-extruding wheels (8) is smaller than the diameter of the guide tube (2).

2. The test tool for producing injection molded tennis ball machines according to claim 1, characterized in that: The outer walls of both sides of the ball squeezing wheel (8) are both mounted with fixed plates (5) via bearings, a motor (7) is fixedly mounted on the outer wall of one of the fixed plates (5), the fixed plate (5) is fixedly mounted on the table top of the base (1), the fixed plate (5) is arranged perpendicular to the table top of the base (1), the two ball squeezing wheels (8) are respectively mounted on the upper and lower ends of the fixed plate (5), and the ball squeezing wheels (8) are driven by the motor (7).

3. The test tool for producing injection molded tennis ball machines according to claim 1, characterized in that: A circle of arc-shaped grooves is provided on the outer wall of the ball-extruding wheel (8), and a guide ring (6) is provided on the outside of the ball-extruding wheel (8) away from the guide tube (2). The outer wall of the guide ring (6) is fixedly mounted on the base (1), and the mounting direction of the opening of the guide ring (6) corresponds to the bottom outlet of the guide tube (2).

4. The test tool for producing injection molded tennis ball machine parts according to claim 1, characterized in that: The outer wall of the fixing rod (3) is frosted, and the end of the fixing rod (3) is connected to the outer wall of the end of the base (1) via a thread.

5. The test tool for producing injection molded tennis ball machine parts according to claim 1, characterized in that: Two support blocks (4) are fixedly mounted above the end of the fixing rod (3) mounted on the base (1), and the support blocks (4) are kept perpendicular to the table surface of the base (1).

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